Note: Descriptions are shown in the official language in which they were submitted.
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Description
Title of the Invention: Glass Plate for a Concrete Conveying Pump
[1] Field of the Invention
[2] The present invention relates to a glass plate for a concrete conveying
pump.
[3] Description of the Prior Art
[43 Existing glass plates for concrete conveying pumps comprise a steel base
with
two feeding through holes thereon, the end face of the steel base is embedded
and
welded with a wear-resistant material slide joint surface, and shear rings are
assembled in the two feeding through holes of the steel base. In the Chinese
Patent
Authorized Publication No. CN201582092 U, shear rings are assembled in two
feeding through holes of the steel base, one end of each shear ring is
provided with a
flange ring that is accommodated in a countersunk hole of the steel base.
During use,
the flange ring is pressed tightly in the countersunk hole by the assembly
pressure
between the steel base and the external conveying pump such that the shear
ring will
not become loose or turn and fall off in operations. On some steel bases,
however,
interference could take place between the countersunk holes for accommodating
the
shear rings and sealing grooves on the end face thereof. Moreover, the
assembly and
disassembly thereof are relatively inconvenient. In addition, such a sear ring
only has
one face thereof utilized, which is a waste.
[5] Summary of the Invention
According to an aspect of the invention, there is provided a glass plate for a
concrete
conveying pump, comprising a steel base with two feeding through holes
thereon, the
end face of the steel base is embedded and welded with a wear-resistant
material slide
joint surface, shear rings are assembled in the two feeding through holes of
the steel
base, which are provided with openings, characterized in that grooves are
formed on
inner circular faces of the feeding through holes, and outer circular faces of
the shear
rings are provided with flanges matched with the grooves; and characterized in
that
along the axial direction, a centrally dividing plane of the shear ring is
taken as a
symmetry plane, and the grooves and the flanges are symmetrically arranged
with
respect to the symmetry plane.
[6] One aspect of the present invention is to provide a glass plate for a
concrete
conveying pump, eliminate countersunk holes for accommodating the shear rings
and
a flange ring at one end of each shear ring, avoid the interference of sealing
grooves
on the end face of the steel base and the countersunk holes for accommodating
the
shear rings thereon, and achieve convenient assembly and disassembly.
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[7] To attain the above, the glass plate for a concrete conveying pump
according to
the present invention comprises a steel base with two feeding through holes
thereon,
the end face of the steel base is embedded and welded with a wear-resistant
material
slide joint surface, shear rings are assembled in the two feeding through
holes of the
steel base, which are provided with openings, grooves are formed on inner
circular
faces of the feeding through holes, and outer circular faces of the shear
rings are
provided with flanges matched with the grooves.
[8] With the structure according to the present invention, the flange ring on
the shear
ring is eliminated and the interference of sealing grooves on the end face of
the steel
base and the countersunk holes for accommodating the shear rings thereon is
avoided,
leading to convenient assembly and disassembly. At the same time, the
engagement of
the grooves and the flange can effectively prevent displacement of the shear
ring
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along the axial direction of the feeding through hole.
[9] Along the axial direction, a centrally dividing plane of the shear ring is
taken as a
symmetry plane, and the grooves and the flanges are symmetrically arranged
with
respect to the symmetry plane.
[10] With such a structure, the front of shear ring can be reversed to become
the back,
which is re-assembled in the feeding through hole for use, i.e. two end faces
of the
shear ring can be utilized, which doubles the service life of the shear ring
relative to
the past.
[11] In such a structure, the structure of grooves and flange is simple, which
facilitates
design, processing and production.
[12] The groove comprises at least one groove arc segment in the
circumferential
direction, the flange matches the groove and comprises the same number of
flange arc
segments as that of the groove arc segments.
[13] Such a structure replaces continuous grooves and flanges with
discontinuous
grooves and flanges, which can prevent the shearing ring from turning
circumferentially.
[14] The cross-sectional shape of the grooves and flanges is rectangular,
which can
improve the precision of axial positioning of the shearing ring.
[15] An expansion device is provided at the opening of the shearing ring.
[16] When the shearing ring is placed in the feeding through hole, the
expansion of
the expansion device increases the diameter of the shearing ring such that the
shearing
ring is more reliably pressed tight onto the inner wall of the feeding through
hole,
which ensures that the shearing ring will not become loose during operations.
[17] The expansion device is composed of two mutually matching expansion wedge
blocks, and two side surfaces of the two expansion wedge blocks that match
with the
shearing ring are both parallel to the axis of the shearing ring.
[18] With such a structure, when the shearing ring is reversed and installed
on the
feeding through hole, the two expansion wedge blocks can still match with the
opening of the shearing ring such that the shearing ring with the expansion
device can
also be used twice with its front and back.
[19] The steel base is provided with radial holes that are open to the feeding
through
holes, a screw is provided within the radial hole, and a screw hole is formed
on one of
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the expansion wedge blocks for threaded connection with the screw.
[20] The above structure can ensure that the shearing ring will not turn
during
operations and at the same time, is favorable for assembly and disassembly of
the
expansion wedge blocks.
[21] The steel base is provided with a guide lifting groove that is open to
the feeding
through hole, and a guide ear that matches with the guide lifting groove is
provided on
one of the expansion wedge blocks.
[22] During operations, the guide lifting groove can limit the circumferential
position
of the expansion wedge block by means of the guide ear therein, thereby
ensuring that
the shearing ring will not turn during operations.
[23] The steel base is provided with radial holes that are open to the feeding
through
holes, a screw is provided within the radial hole for fixing the shearing
ring, thereby
ensuring that the shearing ring will not turn during operations.
[24] Brief Description o f the Drawings
[25] Fig. 1 illustrates the 3-13 structure of Example I of the present
invention;
[26] Fig. 2 illustrates the 3-D structure of the combination of a shearing
ring, an
expansion wedge block and a screw in Example I;
[27] Fig. 3 is an exploded local cross-sectional view of the 3-D structure
of
Example I;
[28] Fig. 4 illustrates the 3-D structure of Example II;
[29] Fig. 5 is an exploded local cross-sectional view of the 3-D structure
of
Example II;
[30] Fig. 6 illustrates the 3-D structure of Example III;
[31] Fig. 7 illustrates the 3-D structure of the combination of a shearing
ring, and
big and small expansion wedge blocks in Example III;
[32] Fig. 8 is an exploded local cross-sectional view of the 3-D structure
of
Example III;
[33] Fig. 9 illustrates the 3-D structure of Example IV;
[34] Fig. 10 is an exploded local cross-sectional view of the 3-D structure
of
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Example IV;
[35] Fig. 11 is an enlarged view of the shearing ring part in Fig. 3;
[36] Fig. 12 is an enlarged view of the steel base part in Fig. 3;
[37] Fig. 13 is an enlarged view of the steel base part in Fig. 8;
[38] Fig. 14 is an enlarged view of the base part in Fig. 10.
[39] Detailed Description of Specific Embodiments
[40] Example I
[41] As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 11 and Fig. 12, the glass plate
for a
concrete conveying pump according to the present invention comprises a steel
base 2
with two feeding through holes 1 thereon, the end face of the steel base 2 is
embedded
and welded with a wear-resistant material slide joint surface 3, shear rings 4
are
assembled in the two feeding through holes 1 of the steel base 2, the shear
rings 4 are
provided with openings, and an expansion device is provided at the opening of
the
shearing ring 4. Grooves 5 are formed on inner circular faces of the feeding
through
holes 1, and outer circular faces of the shear rings 4 are provided with
flanges 6
matched with the grooves 5.
[42] Along the axial direction, a centrally dividing plane of the shear ring 4
is taken as
a symmetry plane (the symmetry plane evenly divides the shear ring 4 into two
parts
with the thickness of each part being one half of the thickness of the entire
shear ring
4), and the grooves 5 and the flanges 6 are symmetrically arranged with
respect to the
symmetry plane.
[43]The cross-sectional shape of each of the grooves 5 and each of the flanges
6 is
preferably mutually matching rectangle, or mutually matching triangle,
trapezoid,
semicircle, or other shapes.
[44]The number of the grooves 5 and the flanges 6 each may be one, two, three
or
more.
[45]A11 of the grooves 5 and the flanges 6 are continuous circumferentially.
[46]The expansion device is composed of an expansion wedge block 7, and two
inclined side surfaces 7C of the expansion wedge block 7 are provided with a
V-shaped guide groove 8. The steel base 2 is provided with a radial hole 9
that is open
to the feeding through hole 1, a screw 15 is provided within the radial hole
9, and one
end of the shear ring 4 is formed with a screw hole 16 for threaded connection
with
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the screw 15. Tightening holes 11 are formed at the openings of the two end
faces of
the shear ring 4 for using an internal caliper to assemble and disassemble.
[47]Wherein, the inner holes and end faces of the shear ring 4 are coated with
a
wear-resistant material to improve the service life of the shear ring 4.
[48] Example ll
[49] As shown in Fig. 4 and Fig. 5, this example is different from Example I
in that the
cross-sectional shape of the groove 5 and the flange 6 is rectangular and
there are one
groove 5 and one flange 6. The groove 5 comprises at least one groove arc
segment in
the circumferential direction, the flange 6 matches the groove 5 and comprises
the
same number of flange arc segments as that of the groove arc segments. The
expansion device is composed of two mutually matching expansion wedge blocks
7A
and 7B, one big and one small, and two side surfaces 7C of the two expansion
wedge
blocks 7A and 7B that match with the shearing ring 4 are both parallel to the
axis of
the shearing ring 4. A V-shaped guide groove 8 is formed on the side surfaces
7C of
the two expansion wedge blocks 7A and 7B and the side surfaces 4C of the
openings
of the shearing ring 4 for mutual match. The big expansion wedge block 7A is
provided with a flange 7D for matching with the groove 5. The small expansion
wedge block 7B thereof is relatively long before the assembly, and the extra
part is
removed with a polishing machine after assembly, as shown in Fig. 5.
[50] Example III
[51]As shown in Fig. 6 to Fig. 8 and Fig. 13, this example is different from
Example
II in that there are two grooves 5 and two flanges 6, which are the first
groove 5A, the
second groove 5B, the first flange 6A and the second flange 6B, respectively.
All of
the grooves 5A, 5B and the flanges 6A, 6B are continuous circumferentially.
The
expansion device is composed of two expansion wedge blocks 7A and 7B, one big
and one small, and two side surfaces 7C of the two expansion wedge blocks 7A
and
7B that match with the shearing ring 4 are both parallel to the axis of the
shearing ring
4. The steel base 2 is provided with a guide lifting groove 12 that is open to
the
feeding through hole 1, and the big expansion wedge block 7A thereof is
provided
with a guide ear 13 that matches with the guide lifting groove 12. A V-shaped
positioning groove 14 is formed on the side surface 7C of the big expansion
wedge
block 7A that matches with the shearing ring 4, the V-shaped positioning
groove 14
may be formed only locally on the side surface 7C of the expansion wedge block
7A,
or may be formed on the entire side surface 7C of the expansion wedge block 7A
as
shown in Fig. 8 to achieve the axial positioning of the expansion wedge block
7. The
side surface 7C of the small expansion wedge block 7B that engages with the
shearing
ring 4 is a plane with no groove.
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[52]During assembly, an internal caliper is inserted into the tightening hole
11 to
clutch the shearing ring 4 and place it into the feeding through hole 1 of'
the steel base
2. The expansion wedge block 7 that has the guide ear 13 is inserted into the
guide
lifting groove 12 of the steel base 2. The longer and small expansion wedge
block 7B
is pushed in and the extra part is removed with a polishing machine after
assembly, as
shown in Fig. 6 to Fig. 8.
[53] Example TV
[54]As shown in Fig. 9, Fig. 10 and Fig. 14, this example is different from
Example
iii in that the cross-sectional shape of the groove 5 and the flange 6 is
rectangular and
there are one groove 5 and one flange 6. The side surfaces 7C of the two
expansion
wedge blocks 7A and 7B that match with the shearing ring 4 are all planes with
no
groove and parallel to the axis of the shearing ring 4. The side surfaces 4C
of the
openings of the shearing ring 4 are all planes as well. The steel base 2 is
provided
with a radial hole 9 that is open to the feeding through hole 1, a screw 15 is
provided
within the radial hole 9, and the big expansion wedge block 7A is formed with
a screw
hole 16 for threaded connection with the screw 15. The big expansion wedge
block
7A is provided with a flange 7D for matching with the groove 5.
[55]During assembly, an internal caliper is inserted into the tightening hole
11 to
clutch the shearing ring 4 and place it into the feeding through hole 1 of the
steel base
2. The screw 15 is installed in the radial hole 9 that is open to the feeding
through hole
1 on the steel base 2 to fix the big expansion wedge block 7A. The longer and
small
expansion wedge block 7B is pushed in and the extra part is removed with a
polishing
machine after assembly, as shown in Fig. 9 and Fig. 10.
