Note: Descriptions are shown in the official language in which they were submitted.
CA 03008669 2018-06-15
HOUSE FORMED BY CONNECTING HIGH-STRENGTH
CONCAVE-CONVEX TROUGH-TYPE STEELS
FIELD OF TECHNOLOGY
The present disclosure relates to the technical field of cold rolled section
steel
structural profiles, and specifically to a house formed by connecting high-
strength
concave-convex trough-type steels.
BACKGROUND
Square steel and round steel pipes are hollow strip steels that are used most
frequently
in the present engineering field. Square steel and round steel pipes not only
have
anti-bending and anti-twisting strength, but also have a lighter weight and
are widely
used in the manufacture of mechanical parts and engineering structures. The
small-sized square steel and cylindrical pipes currently are generally divided
into
hot-rolled seamless round pipes, cold-drawn seamless round pipes, extruded
seamless
round pipes, and welded round pipes. The cross-sectional shape of round pipe
is
generally a conventional cylindrical. In recent years, there have also been
some round
pipes with other cross-sectional shapes, but the moment of inertia thereof has
not been
greatly improved. The usage amount of some steels for the manufacture of
mechanical
parts and engineering structures cannot be greatly reduced. There has not been
much
improvement in reducing the self-weight and improving the strength of
mechanical
parts and engineering projects.
In addition, the connection and fixing between the existing square steel and
round
pipe are still formed be welding. It is very difficult to operate for ordinary
people
since the speed of welding to form the the connecting speed is slow, and thus
the
welding quality is not stable and is greatly influenced by the welding
operator.
SUMMARY
In order to solve the problems and avoid disadvantages in the prior art that
the
rounded steel pipes have low moment of inertia and are difficult to be weld,
the
present disclosure provides a house formed by connecting high-strength
concave-convex trough-type steels, for solving the problems above.
One of the technical solutions according to the disclosure is: a house formed
by
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connecting high-strength concave-convex trough-type steels, comprises a
formwork,
walls, a roof, a door, and windows, and the formwork comprises stand columns,
cross
beams, bottom connecting seats, angular connecting members, and shearing
connectors.
The stand columns or the cross beams are squared rectangle pipes or rounded
rectangle pipes: a cylinder pipe structure which is enclosed by bending and
welding of
steel plate, the cylinder pipe is composed of n arc side surfaces, one
recessed notch
formed by bending is provided between adjacent side edges of the arc side
surface, an
inner slideway, which has a same direction with the notch and a width greater
than the
notch and is formed by means of bending, is provided in the notch, wherein
n>l, is a
integer; the notch comprises two side surfaces connected with adjacent arc
side
surfaces, the inner slideway comprises two side surfaces, one bottom surface
connected with each other and two upper surfaces connected respectively with
the two
side surfaces of the notch, the bottom surface of the inner slideway is a cold-
bending
corrugated plate shape.
A corner connecter at an intersection of high-strength concave-convex trough
squared
rectangle pipes or rounded rectangle pipes: comprises an angular connecting
member
provided between two intersected squared rectangle pipes or rounded rectangle
pipes;
characterized in that: the angular connecting member comprises a vertical
plate and a
lateral plate, both of which are integrally fixed and provided with connecting
ribs,
adjustment holes are provided on the vertical plate and the lateral plate
respectively,
and flipping clamps are arranged in the adjustment holes; the flipping clamp
comprises a rectangular flipping block, rotatory bolts are fixedly connected
on one
side of the rectangular flipping block, an opposite angle of the rectangular
flipping
block is set to be an arc chamfer, the rotatory bolts fit into the adjustment
holes, and
fixing nuts are provided on the rotatory bolts; inner-wide-outer-narrow
caulking
grooves are provided on side walls of the squared rectangle pipes or rounded
rectangle
pipes, the rectangular flipping blocks are in the caulking grooves, width of
the
rectangular flipping block is smaller than that of a caulking groove notch,
the length
of the rectangular flipping block is greater than width of the caulking groove
notch
but smaller than width of a caulking groove bottom.
High-strength concave-convex trough shearing connecting structure: comprises
the
squared rectangle pipe or rounded rectangle pipe and a shearing connecting
plate,
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characterized in that: the shearing connecting plate is a T-shaped structure,
embedded
in the caulking groove of one side of the squared rectangle pipe or rounded
rectangle
pipe; the caulking groove is parallel with an axis and an inner width of the
caulking
groove is greater than the width of the notch; an exposed connecting plate of
embedded T-shaped shearing connecting plate is on an outer side of the
caulking
groove notch of the squared rectangle pipe or rounded rectangle pipe, and
provided
with connecting holes; an inner cleading of the embedded T-shaped shearing
connecting plate fits into the bottom of the caulking groove; upper and lower
ends of
the inner cleading are arranged with screw holes respectively and provided
with
adjusting bolts, a hinge is fixedly connected near the adjusting bolts, an end
of the
adjusting bolt presses against a side surface of the flipping hinge.
A wave direction of the corrugation is the same with a length direction of the
squared
rectangle pipe, or the wave direction of the corrugation is perpendicular to
the length
direction of the squared rectangle pipe.
The two upper surfaces of the inner slideway are connected vertically with the
two
side surfaces of the notch respectively, the inner slideway is square.
A cross-section of the corrugation is a square corrugation, or a jagged
corrugation or a
curved corrugation.
Among each arc side surface constituting the cylinder pipe, side edges of at
least one
pair of adjacent arc side surfaces are welded together.
Among each arc side surface constituting the cylinder pipe, side edges of at
least two
pairs of adjacent arc side surfaces are welded together.
Among each arc side surface constituting the cylinder pipe, a reinforcing
plate is
connected between at least one pair of adjacent arc side surfaces.
A support is provided on a side surface of the connecting rib, the support is
arranged
with a through hole in which mounted with a hook rod, an hook end of the hook
rod is
hitched in the caulking groove of the squared rectangle pipe or rounded
rectangle pipe,
the other end of the rod is fixed on the support by nut.
The bottom surface of the caulking groove is an antinode bottom surface, an
outer
side edge of the flipping hinge supports in the antinode groove.
The T-shaped shearing connecting plate is formed by bending a whole steel
plate.
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A squared rectangle hollow universal beam with bent corners, a section
enclosed to be
rectangle by bending of steel plate thereof is a hollow H-shaped section, the
hollow
universal beam comprises an outer upper wing plate and an outer lower wing
plate;
also comprises two symmetrically arranged open-to-left inner trough body and
open-to-right inner trough body, the inner trough body comprises an inner
upper wing
plate, an inner lower wing plate and an inner web; an outer edge of the inner
upper
wing plate is connected with an edge of the outer upper wing plate; an outer
edge of
the inner lower wing plate is connected with an edge of the outer lower wing
plate, an
inwardly convex bent comer is provided at a connection between the inner upper
wing
plate and the outer upper wing plate; and an inwardly convex bent corner is
provided
at a connection between the inner lower wing plate and the outer lower wing
plate.
At least one of the inner upper wing plate, inner lower wing plate and inner
web is
corrugated plate, and the wave direction of the corrugation thereof is the
same with or
perpendicular to the length direction of the hollow universal beam.
At least one surface of the upper wing plate or lower wing plate is provided
with a
connection weld joint of steel plate.
An outer-shoe connector comprising stand columns or cross beams, the outer-
shoe
connector comprises a length of tubular body and an end socket, the tubular
body
comprises four connector side surfaces enclosed to be rectangle by bending of
steel
plate, at least one T-shaped recession formed by bending is provided on the
tubular
side surface of each connector; an end of a tubular component on an outer shoe
is
fixedly connected with the end socket which comprises a square plate portion
matching with a section of the tubular component, and a T-shaped convex
portion in
the middle; a section shape of the T-shaped recession is the same with that of
the
T-shaped convex portion.
An inner-shoe connector comprising stand columns or cross beams, the inner-
shoe
connector comprises a length of tubular body and an end socket, the tubular
body
comprises four connector side surfaces enclosed to be rectangle by bending of
steel
plate, characterized in that: at least one T-shaped recession formed by
bending is
provided on the tubular side surface of each connector; an end of a tubular
component
on an outer shoe is fixedly connected with the end socket which comprises a
square
plate portion matching with a section of the tubular component, and a T-shaped
convex portion in the middle; a section shape of the T-shaped recession is the
same
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with that of the T-shaped convex portion.
The technical effects of the present disclosure:
1. The present disclosure adopts improved squared rectangular pipe or rounded
rectangular pipe as the connecting main body, and provides a convenient and
stable
connection by means of the angular connecting members, and the constructing
speed
is high. Wherein the side surface of the high-strength concave-convex trough
squared
rectangle pipe or rounded rectangle pipe connecting structure is provided with
a
recessed notch formed by means of bending, an inner slideway, which has a same
direction with the notch and a width greater than the notch and is formed by
means of
bending, is provided in the notch, this structure design can greatly improve
the
moment of inertia, thereby improving the anti-bending and anti-twisting
strength of
the squared rectangle pipe.
2. In addition, the connections between the squared rectangle pipes of the
structure
design may be connected by bolts with special connectors, so that the
stability of the
connection is improved, the connection structure is various in form, and the
flexibility
is strong, which greatly reduces the operational difficulty of the connection
process.
3. The bottom of the inner slideway of the rounded rectangular pipe is a
corrugated
plate shape, which can further enhance the strength of the rounded rectangular
pipe,
and the corrugated plate can also enhance the frictional force when connecting
the
rounded rectangular pipes.
4. The present disclosure can be applied to the steel formwork for building
houses,
and can also be used as an auxiliary formwork, a scaffold etc., as well as in
the
machinery manufacturing industry to replace the existing square pipe or round
pipe.
5. The back sides of the vertical plate and lateral plate of the angular
connecting
member can be matched with the squared rectangular pipe or rounded rectangular
pipe or can be clamped into the caulking groove of the squared rectangular
pipe or
rounded rectangular pipe. Before flipping, the flipping block can be flexibly
inserted
into the caulking groove notch. By rotating the flipping block, the longer two
ends of
the flipping block can support in a wider area on both sides of the caulking
groove, so
as to achieve an anti-falling effect. The fixing nut mounted on the rotary
screw can
pull the flipping block, which further improves the connection stability.
6. The angular connecting member of the present disclosure is applicable not
only to
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two squared rectangular pipes or rounded rectangular pipes that are
perpendicular to
each other or the combination thereof, but also to the connections of any
pipes
intersected with each other (non-right angle).
7. Adjustments to the hinge by means of adjusting bolts do not affect the free
sliding
of the T-shaped shearing connecting plate in the squared rectangular pipe or
rounded
rectangular pipe to any suitable position in the relaxed state, after rotating
the
adjusting bolt, the hinge can be pressed gradually, and the hinge is finally
pressed into
the antinode groove on the bottom of the caulking groove, so as to provide
fixed
connection.
8. Squared rectangle hollow universal beam with bent corners is formed by the
bending of steel plate which can greatly improve the moment of inertia,
thereby
improving the anti-bending and anti-twisting strength of the universal beam,
which
can release the capabilities of the material as much as possible. The design
of the bent
corners thereof can further improve the moment of inertia thereof and improve
the
strength. The antinode plate structure design of the inner wing plate or inner
web
thereof can further enhance the structural strength of the hollow universal
beam and
increase the carrying capacity thereof.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG 1 is a structural diagram of the formwork of the house formed by
connecting
high-strength concave-convex trough-type steels of the present disclosure;
FIG 2 is one of the cross-section structural diagrams of the high-strength
concave-convex trough squared rectangle pipe;
FIG. 3 is a 3-D structural diagram of FIG 2;
FIG 4 is one of the cross-section structural diagrams of the high-strength
concave-convex trough squared rectangle pipe;
FIG. 5 is a reference diagram of calculating and analyzing the rounded
rectangle pipe;
FIG 6 is one of the cross-section structural diagrams of the high-strength
concave-convex trough rounded rectangle pipe;
FIG. 7 is a 3-D structural diagram of FIG 6;
FIG 8 is one of the cross-section structural diagrams of the high-strength
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concave-convex trough rounded rectangle pipe;
FIG. 9 is a reference diagram of calculating and analyzing the rounded
rectangle pipe;
FIG. 10 is a 3-D structural diagram of the squared rectangle hollow universal
beam
with bent corners;
FIG. 11 is a cross-section structural diagram of the squared rectangle hollow
universal
beam with bent corners;
FIG. 12 is a cross-section structural diagram of the high-strength concave-
convex
trough antinode squared rectangle pipe;
FIG 13 is an A-A section structural diagram of FIG. 12;
FIG. 14 is a 3-D structural diagram of FIG 12;
FIG. 15 is a cross-section structural diagram of the high-strength concave-
convex
trough antinode rounded rectangle pipe;
FIG. 16 is a 3-D structural diagram of FIG. 15;
FIG. 17 is one of the B-B section structural diagrams of FIG. 15;
FIG 18 is one of the B-B section structural diagrams of FIG 15;
FIG 19 is one of the B-B section structural diagrams of FIG 15;
FIG 20 is a structural diagram of the usage state of the flipping clamp of the
present
disclosure;
FIG 21 is the top view of FIG. 1;
FIG. 22 is the C-C section structural diagram of FIG. 21;
FIG. 23 is one of the structural diagrams of the angular connecting member of
the
present disclosure;
FIG 24 is the rear 3-D diagram of FIG. 23;
FIG 25 is the structural diagram of the flipping block of FIG 23;
FIG. 26 is one of the structural diagrams of the usage state of the present
disclosure;
FIG 27 is one of the structural diagrams of the angular connecting member of
the
present disclosure;
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FIG. 28 is the usage state diagram of FIG 27;
FIG 29 is one of the structural diagrams of the angular connecting member of
the
present disclosure;
FIG 30 is the usage state diagram of FIG. 29;
FIG. 31 is a 3-D structural diagram of the high-strength concave-convex trough
squared rectangle pipe outer-shoe connector;
FIG 32 is the rear 3-D diagram of FIG 31;
FIG. 33 is a front view of the high-strength concave-convex trough squared
rectangle
pipe outer-shoe connector;
FIG. 34 is the D-D section structural diagram of FIG. 33;
FIG 35 is a front view structural diagram of the high-strength concave-convex
trough
squared rectangle pipe inner-shoe connecting structure;
FIG 36 is the E-E section structural diagram of FIG 35;
FIG. 37 is a top view structural diagram of the high-strength concave-convex
trough
squared rectangle pipe outer-shoe connecting structure;
FIG. 38 is a usage state structural diagram of the present disclosure;
FIG 39 is a partial sectional structural diagram of the connecting plate in
FIG 38;
FIG 40 is the F-F section structural diagram of FIG. 39.
In the figures: la is squared rectangle pipe, lb is rounded rectangle pipe, 3
is inner
slideway, 2-1 is side surface of the notch, 3-1 is upper surface of the inner
slideway,
3-2 is side surface of the inner slideway, 3-3 is bottom surface of the inner
slideway,
3-4 is antinode bottom surface of the inner slideway, 4 is weld joint, 5 is
angular
connecting member, 51 is vertical plate, 52 is lateral plate, 53 is connecting
rib, 54 is
fixing hole, 55 is adjustment hole, 56 is vertical plate concave arc surface,
57 is lateral
plate concave arc surface, 6 is fixing nut, 7 is flipping block, 71 is
flipping block main
body, 72 is rotatory bolt, 73 is arc chamfer, 74 is edge hole, 8 is support, 9
is hook rod,
is shearing connecting plate, 101 is exposed connecting plate, 102 is inner
cleading,
103 is connecting hole, 104 is hinge, 105 is adjusting bolt, 106 is welding
spot, 107 is
tubular body of the connecting member, 108 is square plate of the end socket
of the
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connecting member, 109 is T-shaped projection of the end socket of the
connecting
member. 11. outer upper wing plate, 12. inner upper wing plate, 13. inner web,
14.
inner lower wing plate, 15. outer lower wing plate, 16. bent corner, 17. inner
cavity.
01. side surface of the outer-shoe connector, 02. notch of the outer-shoe
connector, 03.
inner slideway of the outer-shoe connector, 02-1. side surface of the notch of
the
outer-shoe connector, 03-1. upper surface of the inner slideway of the outer-
shoe
connector, 03-2. side surface of the inner slideway of the outer-shoe
connector, 04.
weld joint of the outer-shoe connector. 201. connecting member, 202. outer
squared
rectangle pipe I, 203. outer squared rectangle pipe II, 204. tapping screw.
DETAILED DESCRIPTION
A house formed by connecting high-strength concave-convex trough-type steels,
referring to FIG. 1, comprises a formwork, walls, a roof, a door, and windows.
The
formwork comprises stand columns, cross beams, bottom connecting seats,
angular
connecting members, shearing connecting members, and stairs.
High-strength concave-convex trough squared rectangle pipe: referring to FIG
2-FIG 4, comprises four (or six) squared rectangle pipe 1 a side surfaces
enclosed to
be rectangle by the bending of steel plate, a recessed notch formed by means
of
bending is provided in each squared rectangle pipe la side surface, an inner
slideway,
which has a same direction with the notch and a width greater than the notch
and is
formed by means of bending, is provided in the notch.
The notch comprises two side surfaces connected with the squared rectangle
pipe la
side surface, the inner slideway comprises connected two side surfaces, one
bottom
surface and two upper surfaces connected respectively with the two side
surfaces of
the notch.
The two side surfaces of the notch are connected vertically with the side
surface of the
squared rectangle pipe 1 a, the two upper surfaces of the inner slideway are
connected
vertically with the two side surfaces of the notch respectively, the inner
slideway is
square.
The transitional joint between at least two adjacent side surfaces of the four
side
surfaces of the squared pipe is connecting weld.
In order to verify that the moment of inertia of the squared rectangle pipe la
in the
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,
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present disclosure is significantly improved, the inventor conducts
calculations and
analysis to the squared rectangle pipe la of the present disclosure as
follows: several
squared rectangle pipes that have the same shape and size as shown in the
table below
are selected,
Moment of
Thickness D
H(mm) B(mm) H1(mm) H2(mm) B1(mm) B2(mm)
inertia I
(mm)
(mm4)
180 180 80 20 10 20 1
5181523
180 180 80 20 10 20 2
10256554
180 180 80 20 10 20 3
15229723
180 180 80 20 10 20 4
20105568
180 180 85 20 10 20 1
5207036
180 180 90 20 10 20 1
5235998
180 180 80 25 10 20 1
5536984
180 180 80 30 10 20 1
5920646
180 180 80 35 10 20 1
6334508
180 180 80 20 15 20 1
5213221
180 180 80 20 20 20 1
5257869
180 180 80 20 10 25 1
5083796
180 180 80 20 10 30 1
4991269
180 180 80 20 10 35 1
4904943
the moment of inertia of the above squared rectangle pipes are calculated
according to
the size relation in FIG 5.
It can be known by comparing the data of the above table that, the moment of
inertia
of the squared rectangle pipe is increased by 50%-100% compared to the moment
of
inertia of the square pipe with the same size. Among all the parameters of the
squared
rectangle pipe, H2 has a greater influence on the change of the moment of
inertia, and
the larger the H2, the larger the moment of inertia; the larger the B2, the
smaller the
overall moment of inertias, the value of B2 should be reduced as much as
possible in
the overall design.
In addition, the inventor conducts a finite element analysis through software
and finds
that the squared rectangle pipe has a significantly increased anti-yield
capacity
compared to C-shaped steel with the same size, the anti-yield capacity is
related to the
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wall thickness D, when the wall thickness is lmm, the anti-yield capacity
increases by
1.5 times, when the wall thickness is 2mm it increases by 11 times, and when
the wall
thickness is 3mm it increases by 26 times. Therefore, it can be estimated that
if build a
house with 3mm construction steel, at least 7 floors would be built with the
squared
rectangle pipe, therefore it is suitable for high-rise residential use.
High-strength concave-convex trough rounded rectangle pipe: referring to FIG
5-FIG 8, rounded rectangle pipe lb is enclosed by the bending of a whole steel
plate,
it is composed of four arc side surfaces. A recessed notch 2 formed by means
of
bending is provided between every two adjacent arc side surfaces. There are
four (or
six) recessed notches 2 in total.
Referring to FIG. 5, an inner slideway 3, which has a same direction with the
notch 2
and a width greater than the notch 2 and is formed by means of bending, is
provided
in each notch 2.
The notch 2 comprises two notch side surfaces 2-1 connected with the rounded
rectangle pipe lb side surface, the inner slideway 3 comprises connected two
inner
slideway side surfaces 3-2, one inner slideway bottom surface 3-3 and two
inner
slideway upper surfaces 3-1 connected respectively with the two side surfaces
of the
notch 2.
The two side surfaces of the notch 2 are connected vertically with the side
surface of
the rounded rectangle pipe lb, the two upper surfaces of the inner slideway 3
are
connected vertically with the two side surfaces of the notch 2 respectively.
The inner
slideway 3 is square.
It can be seen that the four arc side surfaces of the rounded rectangle pipe
lb are
formed by bending or folding, and a connection weld joint 4 is formed by
welding the
two side edges at the end after butt joint.
The production process of the rounded rectangle pipe lb:
Rounded rectangle pipe lb is enclosed by the bending of a whole steel plate
which is
composed of four arc side surfaces. And a recessed notch 2 formed by means of
bending is provided between every two adjacent arc side surface, there are
four
recessed notches 2 in total.
It can be seen from the figure that, an inner slideway 3, which has a same
direction
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with the notch 2 and a width greater than the notch 2 and is formed by means
of
bending, is provided in each notch 2.
The notch 2 comprises two notch side surfaces 2-1 connected with the rounded
rectangle pipe lb side surface, the inner slideway 3 comprises connected two
inner
slideway side surfaces 3-2, one inner slideway bottom surface 3-3 and two
inner
slideway upper surfaces 3-1 connected respectively with the two side surfaces
of the
notch 2.
The two side surfaces of the notch 2 are connected vertically with the side
surface of
the rounded rectangle pipe lb, the two upper surfaces of the inner slideway 3
are
connected vertically with the two side surfaces of the notch 2 respectively.
The inner
slideway 3 is square.
It can be seen that the four arc side surfaces of the rounded rectangle pipe
lb are
formed by bending or folding, and a connection weld joint 4 is formed by
welding the
two side edges at the end after butt joint.
The production process thereof comprises the following steps:
a. after a steel plate is flattened, bending the plate material with the
bottom surface
width of the inner slideway to form a square vertical projection, the rest of
the steel
plate keeps perpendicular to the side surfaces of the vertical projection, the
height of
the square vertical projection is equal to the sum of the width of one side
surface of
the inner slide, the width of one upper side surface of the inner slide, and
the width of
one side surface of the notch;
b. performing step a four times in total, so as to form four vertical
projections; or form
four vertical projections simultaneously in step a;
c. bending recessed grooves that recess inwardly at the bottoms of the two
side
surfaces of the square projection in step a, the height of the groove is the
same as the
height of the notch of the rounded rectangle pipe lb, form lateral projections
toward
the two sides on the upper portions of the recessed grooves, the step depth
between a
lateral projection and a recessed groove is the same as the upper surface of
the inner
slideway of the rounded rectangle pipe lb; the vertical projection becomes T-
shaped
projection after step c is completed;
d. performing step c once on both sides of each vertical projection in step b,
or
12
,
,
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perform step c on the four vertical projections simultaneously;
e. forming four T-shaped projections after step d is completed, bend the
interval steel
plate between adjacent T-shaped projections into arc, and enclose the steel
plate into
rounded rectangle pipe lb, and connect at the butt seam of the steel plates by
welding.
In order to verify that the moment of inertia of the rounded rectangle pipe lb
in the
present disclosure is significantly improved, the inventor conducts
calculations and
analysis to the rounded rectangle pipe lb of the present disclosure as
follows:
several rounded rectangle pipes lb that have the same shape and size are
selected,
Rounded rectangle pipe lb property list
Perimeter Moment of inertia
D(mm) hl(mm) h2(mm) bl(mm) b2(mm) D(MM)
L(mm) I(mm4)
229 80 20 15 5 1 2465 6402010
229 80 20 15 5 2 2465 12805221
229 80 20 10 20 3 2465 19210389
229 80 20 10 20 4 2465 25618625
229 85 20 15 5 1 2462 6338796
229 90 20 15 5 1 2458 6272155
229 80 25 15 5 1 2545 6993149
229 60 30 15 5 1 2713 7661075
229 80 20 25 5 1 2465 6402099
229 80 20 30 5 1 2545 6302148
229 80 20 15 10 1 2465 6513928
229 80 20 15 15 1 2545 6521806
229 80 20 15 20 1 2625 6526226
referring to the mesh generation result of the rounded rectangle pipe lb shown
in FIG
9 and the equivalent stress result of the rounded rectangle pipe lb shown in
FIG 6.
Conclusion: it can be known according to comparison that the moment of inertia
of
the rounded rectangle pipe lb and the squared rectangle pipe (basically equal
perimeter, hl, h2, b 1, b2 are equal) is increased by 10%-20%; the larger the
hl, the
smaller the overall moment of inertia, the value of hl should be as small as
possible;
h2 has a greater influence on the change of the moment of inertia, and the
larger the
h2, the larger the moment of inertia; other parameters do not have obvious
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contribution to the moment of inertia.
According to the finite element analysis, the anti-yield capacity of the
rounded
rectangle pipe can be improved by 10%-25% compared to the anti-bending
capacity
of the squared rectangle pipe with the same size, the anti-shearing capacity
and the
anti-pressure capacity are basically the same, the rounded rectangle pipe is
suitable to
be anti-bending members.
High-strength concave-convex trough antinode squared rectangle pipe: referring
to FIG 12-FIG 14, comprises four squared rectangle pipe la side surfaces
enclosed
to be rectangle by the bending of steel plate, at least one recessed notch
formed by
means of bending is provided in each squared rectangle pipe 1 a side surface,
an inner
slideway, which has a same direction with the notch and a width greater than
the
notch and is formed by means of bending, is provided in the notch, the notch
comprises two side surfaces connected with the squared rectangle pipe la side
surface,
the inner slideway comprises connected two side surfaces, one bottom surface
and
two upper surfaces connected respectively with the two side surfaces of the
notch, the
bottom surface of the inner slideway is a cold-bending corrugated plate shape.
The wave direction of the corrugation is the same with the length direction of
the
squared rectangle pipe la, the two side surfaces of the notch are connected
vertically
with the side surface of the squared rectangle pipe I a, the two upper
surfaces of the
inner slideway are connected vertically with the two side surfaces of the
notch
respectively, the inner slideway is square. The cross-section of the
corrugation is a
square corrugation.
At least one side surface of the four side surfaces of the squared pipe is
provided with
a steel plate connecting weld.
High-strength concave-convex trough antinode rounded rectangle pipe: referring
to FIG 15-FIG 19, rounded rectangle pipe lb is enclosed by the bending of a
whole
steel plate, it is composed of four arc side surfaces. A recessed notch 2
formed by
means of bending is provided between every two adjacent arc side surface.
There are
four recessed notches 2 in total.
It can be seen from the figures that an inner slideway 3, which has a same
direction
with the notch 2 and a width greater than the notch 2 and is formed by means
of
bending, is provided in each notch 2.
14
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The notch 2 comprises two notch side surfaces 2-1 connected with the rounded
rectangle pipe lb side surface, the inner slideway 3 comprises connected two
inner
slideway side surfaces 3-2, one inner slideway antinode bottom surface 3-3 and
two
inner slideway upper surfaces 3-1 connected respectively with the two side
surfaces of
the notch 2.
The two side surfaces of the notch 2 are connected vertically with the side
surface of
the rounded rectangle pipe 1 b, the two upper surfaces of the inner slideway 3
are
connected vertically with the two side surfaces of the notch 2 respectively.
The inner
slideway 3 is square.
It can be seen that the four arc side surfaces of the rounded rectangle pipe
lb are
formed by bending or folding, and a connection weld joint 4 is formed by
welding the
two side edges at the end after butt joint.
It can be seen that, the antinode bottom surface 3-3 of the inner slideway is
a
cold-bending rectangle corrugated plate shape. The wave direction of the
rectangle
corrugation is the same with the length direction of the rounded rectangle
pipe lb.
The production process of the high-strength concave-convex trough antinode
rounded
rectangle pipe lb: high-strength concave-convex trough antinode rounded
rectangle
pipe lb is enclosed by the bending of a whole steel plate, which is composed
of four
arc side surfaces. A recessed notch 2 formed by means of bending is provided
between
every two adjacent arc side surfaces, there are four recessed notches 2 in
total.
An inner slideway 3, which has a same direction with the notch 2 and a width
greater
than the notch 2 and is formed by means of bending, is provided in each notch
2.
The notch 2 comprises two notch side surfaces 2-1 connected with the rounded
rectangle pipe lb side surface, the inner slideway 3 comprises connected two
inner
slideway side surfaces 3-2, one inner slideway antinode bottom surface 3-3 and
two
inner slideway upper surfaces 3-1 connected respectively with the two side
surfaces of
the notch 2.
The two side surfaces of the notch 2 are connected vertically with the side
surface of
the rounded rectangle pipe lb, the two upper surfaces of the inner slideway 3
are
connected vertically with the two side surfaces of the notch 2 respectively,
the inner
slideway 3 is square.
CA 03008669 2018-06-15
It can be seen that the four arc side surfaces of the rounded rectangle pipe
lb are
formed by bending or folding, and a connection weld joint 4 is formed by
welding the
two side edges at the end after butt joint.
The antinode bottom surface 3-3 of the inner slideway is a cold-bending
rectangle
corrugated plate shape. The wave direction of the rectangle corrugation is the
same
with the length direction of the rounded rectangle pipe lb.
The production process thereof comprises the following steps:
a. after a steel plate is flattened, four banded corrugated areas are rolled
on the steel
plate. As shown in FIG 8, FIG 9 or FIG 10, the cross-section of the
corrugation is a
square corrugation, or a jagged corrugation or a curved corrugation.
b. the plate material with the bottom surface width of the inner slideway is
bent to
form a square vertical projection, and the banded corrugated areas are ensured
to be in
the upper surface of the vertical projection, the rest of the steel plate
keeps
perpendicular to the side surfaces of the vertical projection, the height of
the square
vertical projection is equal to the sum of the width of one side surface of
the inner
slide, the width of one upper side surface of the inner slide, and the width
of one side
surface of the notch.
c. step b is performed four times to form four vertical projections; the four
banded
corrugated areas in step a are in the upper surfaces of the four vertical
projections
respectively.
d. recessed grooves are bent that recess inwardly at the bottoms of the two
side
surfaces of the square projection in step b, the height of the groove is the
same as the
height of the notch of the rounded rectangle pipe lb, form lateral projections
toward
the two sides on the upper portions of the recessed grooves, the step depth
between a
lateral projection and a recessed groove is the same as the upper surface of
the inner
slideway of the rounded rectangle pipe 1 b; the vertical projection becomes T-
shaped
projection after step d is completed;
e. step d is performed once on both sides of each vertical projection in step
c.
f. n T-shaped projections are formed after step d is completed, bend the
interval steel
plate between adjacent T-shaped projections into arc, and enclose the steel
plate into
rounded rectangle pipe lb, and connect at the butt seam of the steel plates by
welding.
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High-strength concave-convex trough squared rectangle pipe (or rounded
rectangle pipe) connection structure Dl: referring to FIG 20-FIG 30, an
angular
connecting member 5 is provided between two intersected squared rectangle
pipes la.
As shown in the figures, the angular connecting member 5 comprises a vertical
plate
and a lateral plate, both of which are integrally fixed and provided with
connecting
ribs. Adjustment holes are provided on the vertical plate and the lateral
plate
respectively, and flipping clamps are arranged in the adjustment holes. The
flipping
clamp comprises a rectangular flipping block 7. An opposite angle of the
rectangular
flipping block 7 is set to be an arc chamfer, rotatory bolts are fixedly
connected on
one side of the rectangular flipping block 7, the rotatory bolts fit into the
adjustment
holes and fixing nuts 6 are provided on the rotatory bolts.
As shown in the figures, inner-wide-outer-narrow caulking grooves are provided
on
the side walls of the squared rectangle pipes la, the rectangular flipping
blocks 7 are
in the caulking grooves, the width of the rectangular flipping block 7 is
smaller than
the width of the caulking groove notch 2, the length of the rectangular
flipping block
7 is greater than the width of the caulking groove notch 2 but smaller than
the width
of the caulking groove bottom.
The squared rectangle pipe 1 a comprises four squared rectangle pipe la side
surfaces
enclosed to be rectangle by the bending of steel plate, a recessed notch 2
formed by
means of bending is provided in each squared rectangle pipe la side surface,
an inner
slideway, which has a same direction with the notch and a width greater than
the
notch and is formed by means of bending, is provided in each notch 2.
The notch 2 comprises two side surfaces connected with the squared rectangle
pipe la
side surface, the inner slideway comprises connected two side surfaces, one
bottom
surface and two upper surfaces connected respectively with the two side
surfaces of
the notch 2. The two upper surfaces of the inner slideway are connected
vertically
with the two side surfaces of the notch 2 respectively, the inner slideway is
square.
The transitional joint between at least two adjacent side surfaces of the four
side
surfaces of the squared pipe is connecting weld.
At least one side surface of the four side surfaces of the squared pipe 1 a is
provided
with a steel plate connecting weld 4.
High-strength concave-convex trough squared rectangle pipe outer-shoe
17
,
,
CA 03008669 2018-06-15
connector D3: referring to FIG 31-FIG 34, the outer-shoe connector comprises a
length of tubular body and an end socket, the tubular body comprises four
connector
side surfaces enclosed to be rectangle by the bending of steel plate, the
characteristics
thereof are: at least one T-shaped recession formed by bending is provided on
the
tubular side surface of each connector; the end of the tubular component on
the outer
shoe is fixedly connected with the end socket which comprises a square plate
portion
matching with the section of the tubular component, and a T-shaped convex
portion in
the middle; the section shape of the T-shaped recession is the same with that
of the
T-shaped convex portion.
The T-shaped recession comprises a notch and inner slideway, the connecting
notch
comprises two side surfaces connected with the side surface of the connector,
the
inner slideway of the connector comprises connected two side surfaces, one
bottom
surface and two upper surfaces connected respectively with the two side
surfaces of
the notch of the connector; the two side surfaces of the notch of the
connector are
connected vertically with the side surface of the connector, the two upper
surfaces of
the inner slideway of the connector are connected vertically with the two side
surfaces
of the notch of the connector respectively, the inner slideway is square.
The T-shaped convex portion comprises a chuck head extended laterally from the
outer end, and a neck portion connected to the square plate.
The transitional joint between at least two adjacent side surfaces of the four
side
surfaces of the tubular body of the connector is connecting weld.
High-strength concave-convex trough squared rectangle pipe inner-shoe
connector D4: as shown in FIG 35-FIG 37, the inner-shoe connector comprises a
length of tubular body and an end socket, the tubular body comprises four
connector
side surfaces enclosed to be rectangle by the bending of steel plate, the
characteristics
thereof are: at least one T-shaped recession formed by bending is provided on
the
tubular side surface of each connector; the end of the tubular component on
the inner
shoe is fixedly connected with the end socket which comprises a square plate
portion
matching with the section of the tubular component, and a T-shaped convex
portion in
the middle; the section shape of the T-shaped recession is the same with that
of the
T-shaped convex portion.
The T-shaped recession comprises a notch and inner slideway, the connecting
notch
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CA 03008669 2018-06-15
comprises two side surfaces connected with the side surface of the connector,
the
inner slideway of the connector comprises connected two side surfaces, one
bottom
surface and two upper surfaces connected respectively with the two side
surfaces of
the notch of the connector; the two side surfaces of the notch of the
connector are
connected vertically with the side surface of the connector, the two upper
surfaces of
the inner slideway of the connector are connected vertically with the two side
surfaces
of the notch of the connector respectively, the inner slideway is square.
The T-shaped convex portion comprises a chuck head extended laterally from the
outer end, and a neck portion connected to the square plate.
The transitional joint between at least two adjacent side surfaces of the four
side
surfaces of the tubular body of the connector is connecting weld.
High-strength concave-convex trough shearing connecting structure D2: as
shown in FIG 38-FIG 40, one side of the squared rectangle pipe 1 a is
connected
with a shearing connecting plate 10.
The squared rectangle pipe la comprises four squared rectangle pipe la side
surfaces
enclosed to be rectangle by the bending of steel plate, at least one recessed
notch
formed by means of bending is provided in each squared rectangle pipe 1 a side
surface, an inner slideway, which has a same direction with the notch and a
width
greater than the notch and is formed by means of bending, is provided in each
notch.
The rounded rectangle pipe lb comprises a cylinder pipe structure which is
enclosed
by the bending and welding of steel plate, the rounded rectangle pipe is
composed of
n arc side surfaces, one recessed notch formed by bending is provided between
adjacent side edges of the arc side surface, an inner slideway, which has a
same
direction with the notch and a width greater than the notch and is formed by
means of
bending, is provided in the notch, wherein n>1.
The notch comprises two notch side surfaces connected with the squared
rectangle
pipe la side surface, the inner slideway comprises connected two side
surfaces, one
bottom surface and two upper surfaces connected respectively with the two side
surfaces of the notch. The two side surfaces of the notch are connected
vertically with
the side surface of the squared rectangle pipe 1 a, the two upper surfaces of
the inner
slideway are connected vertically with the two side surfaces of the notch
respectively,
the inner slideway is square. At least one side surface of the four side
surfaces of the
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CA 03008669 2018-06-15
squared rectangle pipe la is provided with a steel plate connecting weld.
The transitional joint between at least two adjacent side surfaces of the four
side
surfaces of the squared rectangle pipe la is connecting weld. The bottom
surface of
the caulking groove is an antinode bottom surface, the outer side edge of the
flipping
hinge 104 supports in the antinode groove. The antinode is a jagged shape, or
a square
wave, or an arc wave.
The shearing connecting plate 10 is a T-shaped structure, embedded in the
caulking
groove of one side of the squared rectangle pipe la or rounded rectangle pipe
lb.
The exposed connecting plate 101 of the embedded T-shaped shearing connecting
plate 10 is on the outer side of the caulking groove notch of the squared
rectangle pipe
la or rounded rectangle pipe lb, and provided with connecting holes 103; the
inner
cleading 102 of the embedded T-shaped shearing connecting plate 10 fits into
the
bottom of the caulking groove; the upper and lower ends of the inner cleading
102 are
arranged with screw holes respectively and provided with adjusting bolts 105,
a hinge
104 is fixedly connected near the adjusting bolts 105, the end of the
adjusting bolt 105
presses against the side surface of the flipping hinge 104.
The T-shaped shearing connecting plate 10 may be a T-shaped structure plate
welded
by steel plate, or formed by folding of a whole steel plate.
Squared rectangle hollow universal beam with bent corners: as shown in FIG 10
and FIG 11, the section enclosed to be rectangle by the bending of steel plate
thereof
is a hollow H-shaped section, the hollow universal beam comprises an outer
upper
wing plate and an outer lower wing plate; also comprises two symmetrically
arranged
open-to-left inner trough body and open-to-right inner trough body, the inner
trough
body comprises an inner upper wing plate, an inner lower wing plate and an
inner web;
the outer edge of the inner upper wing plate is connected with the edge of the
outer
upper wing plate; the outer edge of the inner lower wing plate is connected
with the
edge of the outer lower wing plate, an inwardly convex bent corner is provided
at the
connection between the inner upper wing plate and the outer upper wing plate;
and an
inwardly convex bent corner is provided at the connection between the inner
lower
wing plate and the outer lower wing plate.
At least one of the four bent corners of the squared rectangle hollow
universal beam is
provided with a connection weld joint.
. CA 03008669 2018-06-15
According to the present disclosure, after all the connection points above are
positioned, the strength basically meets the use requirements. For the purpose
of reuse,
it can be achieved by mounting and dismounting. In addition, without
considering
reuse, the fixing and connection may be enhanced by spot welding. Under the
guidance of the concept of the present disclosure, changes of the notch shape
and
changes of the sliding shape are within the protection scope of the present
disclosure
as long as the purpose thereof is consistent with the purpose of the present
disclosure,
and such changes will not be described one-by-one herein.
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