Note: Descriptions are shown in the official language in which they were submitted.
CA 03061169 2019-10-23
DESCRIPTION
Drilling Rig and Guide Rail Structure for Power Head Thereof
Technical field
The invention relates to the technical field of drilling machines, in
particular to a drilling machine and a power head guide rail structure of the
drilling machine. The present invention is based on a Chinese invention
patent application No. CN201710294450. X, filed on April 28, 2017.
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Background technology
Most guide rails used by the traditional drilling machines are of a
quadrilateral structure in cross section, wherein a power head bracket is
sleeved on the guide rail through a square hole arranged on the rail, a
wear-resistant sheet is arranged between the guide rail and the square hole of
the power head bracket, and the power head bracket can slide up and down
along the guide rail.
Due to the fact that the square hole of the power head bracket is closed,
the power head bracket can only be pushed into the guide rail from two ends
zo of the guide rail through special equipment and tools in assembly.
Date Recue/Date Received 2021-04-14
CA 03061169 2019-10-23
Requirements on assembly sites and equipment are high, assembly is
difficult, efficiency is low, and wear-resistant sheets are difficult to
replace
in the later period.
The square hole of the power head bracket and four matching surfaces
of the guide rail are influenced by the machining precision, and a certain
dimension error exists in the gap between the square hole and the guide rail
surface. If the friction force of the power head bracket on the guide rail
meets the design requirement, the wear-resistant sheet must be matched
according to different gaps each time, and therefore the time period is long
and the mode is not conducive to batch production.
Due to the fact that the square hole of the power head bracket is closed,
when the wear-resistant sheet is worn, the gap cannot be adjusted, which
leads to the result that the power head continuously shakes during working,
the guiding property and the directionality of the power head of the drilling
Is machine are poor, the drilling effect is finally influenced, and the
abrasion of
the drill rod and the righting mechanism of the drilling machine is
accelerated.
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Technical problem
In order to overcome the defects of the prior art, the invention provides
a power head guide rail structure of a drilling machine, wherein a guide rail
can be sleeved on a power head bracket from one side, and the friction force
between the power head bracket and the guide rail can be conveniently
adjusted.
In addition, the invention also provides a drilling machine using the rail
structure above-mentioned.
to Technical solution
The technical solution adopted by the invention for solving the technical
problems is a power head guide rail structure of a drilling machine,
comprising a guide rail mounted on a drilling machine bracket and a power
head bracket mounted on the guide rail and capable of moving along the
guide rail, wherein the power head bracket is provided with a guide groove
which penetrates up and down and is opened at a first side, an adjusting
block being detachably mounted in the guide groove at a first side, a position
of the adjusting block relative to the guide groove being adjustable, the
adjusting block being matched with the guide groove to clamp the guide rail,
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wear-resistant sheets being arranged between a second side of the guide
groove and the guide rail and between the first side of the adjusting block
and the guide rail, and the first side of the adjusting block being far away
from the second side of the guide groove.
In a preferred solution, a cross section of the guide rail is polygonal,
V-shaped grooves being arranged on the second side of the guide groove and
the first side of the adjusting block, the V-shaped grooves on the second side
of the guide groove and the first side of the adjusting block being
respectively matched with a pair of symmetrical V-shaped surfaces on the
to guide rail, and wear-resistant sheets being arranged on both side walls of
each V-shaped groove.
Preferably, a number of sides of a polygon of the cross section of the
guide rail is even.
In a further solution, the guide rail is of a hollow structure, the cross
is .. section of the guide rail is of a regular hexagon, and neither a front
side
surface nor a rear side surface of the guide rail is contacted with a front
side
wall or a rear side wall of the guide groove.
Optionally, the guide rail is of a hollow structure, the cross section of the
guide rail is of a rhombus, and neither a front side edge nor a rear side edge
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of the guide rail is contacted with a front side wall or a rear side wall of
the
guide groove.
Furthermore, a reinforcing rib is arranged in the guide rail, and two
sides of the reinforcing rib are respectively connected with a left side edge
and a right side edge of the guide rail.
In an optional solution, the cross section of the rail is circular, and
furthermore the rail is of a solid construction.
In a further solution, threaded holes are formed in a front side and a rear
side of the adjusting block, and strip-shaped holes are formed in the front
side wall and the rear side wall of the guide groove, a length direction of
the
strip-shaped hole being perpendicular to an axial direction of the guide rail,
and the adjusting block penetrating through the strip-shaped hole through a
locking screw and being locked in the threaded hole.
In a further solution, at least one fixing block is detachably mounted on
the power head bracket at the second side of the adjusting block, and the
fixing block is provided with an adjusting bolt which is able to be screwed to
tightly press the adjusting block in a direction of the first side.
To achieve another object mentioned above, the present invention
provides a drilling machine comprising a base, a drilling machine bracket
being arranged on the base, a guide rail being mounted on the drilling
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machine bracket, a power head bracket being mounted on the guide rail and
being able to move along the guide rail, wherein the power head bracket is
provided with a guide groove which penetrates up and down and is opened
at a first side, an adjusting block being detachably mounted in the guide
groove at a first side, a position of the adjusting block relative to the
guide
groove being adjustable, the adjusting block being matched with the guide
groove to clamp the guide rail, wear-resistant sheets being arranged between
a second side of the guide groove and the guide rail and between the first
side of the adjusting block and the guide rail, the first side of the
adjusting
to block being far away from the second side of the guide groove.
Beneficial effects
The invention has the beneficial effects that: the guide rail structure
provided by the invention adopts a guide groove with an opening on one side
to be installed in a matched mode, which is different from the traditional
closed guide rail structure and does not need to specially disassemble and
assemble parts at two ends of the guide rail during assembly. The guide rail
structure provided by the invention is simple to assemble and also reduces
requirements on assembly sites and equipment. An adjusting block is
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detachably arranged in the guide groove at the right side, so that the
wear-resistant sheet can be conveniently adjusted, and the friction force
between the power head bracket and the guide rail can be adjusted after the
wear-resistant sheet is worn. In this way, the drilling precision of the
drilling
machine is kept for a long time, the abrasion of related parts is reduced, the
coaxiality between the motion track of the power head bracket and the guide
rail is high, and the power head is prevented from shaking.
Brief Description of the Drawings
to The present invention will now be further described with reference to
the accompanying drawings and specific embodiments, in which:
FIG 1 is a schematic view showing the structure of a first embodiment
of the present invention;
FIG 2 is a cross-sectional view of a first embodiment of the present
invention;
FIG 3 is an exploded schematic view of a first embodiment of the
present invention;
FIG 4 is a cross-sectional view of a second embodiment of the present
invention;
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FIG. 5 is an exploded schematic view of a second embodiment of the
present invention.
Detailed embodiments of the present invention
The drilling machine provided by the invention comprises a base,
wherein a drilling machine bracket is arranged on the base, a guide rail is
mounted on the drilling machine bracket, a power head of the drilling
machine can be mounted on the power head bracket, and the power head
bracket can slide back and forth along the rail. The power head guide rail
structure of the drilling machine of the present invention will now be
described by way of the following two embodiments.
The first embodiment:
Referring to figures 1 and 2, the power head guide rail structure of the
drilling machine provided by the first embodiment of the invention
comprises a guide rail 1 mounted on a drilling machine bracket and a power
head bracket 2 mounted on the guide rail 1 and capable of moving along the
guide rail 1, wherein the power head bracket 2 is provided with a guide
groove 3 which penetrates up and down and is opened at the right side, and
an adjusting block 4 is detachably installed in the guide groove 3 at the
right
side. The position of the adjusting block 4 relative to the guide slot 3 is
adjustable.
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Specifically, as shown in FIG 3, threaded holes 7 are formed in the front
and rear sides of the adjusting block 4, strip-shaped holes 8 are formed in
the
front and rear side walls of the guide groove 3. The length direction of the
strip-shaped hole 8 is perpendicular to the axial direction of the guide rail
1,
and the length direction of the strip-shaped hole 8 is also perpendicular to
the direction of the surface of the right side wall of the adjusting block 4.
The adjusting block 4 is mounted in the guide groove 3 in a manner that a
locking screw 9 penetrates through the strip-shaped hole 8 and is locked in
the threaded hole 7. At least one fixing block 10 is detachably installed on
.. the power head bracket 2 at the right side of the adjusting block 4, a nut
is
arranged on the fixing block 10, an adjusting bolt 11 is installed on the nut,
and the adjusting bolt 11 can penetrate through the nut to move leftwards to
tightly press the adjusting block 4. The adjusting block 4 is made to
cooperate with the guide groove 3 to clamp the guide rail 1. In addition,
wear-resistant sheets 5 are arranged between the left side of the guide groove
3 and the guide rail 1 and between the left side of the adjusting block 4 and
the guide rail 1.
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The shape of the guide rail 1 is special, and the cross section of the
guide rail 1 can be a polygon with an even number of sides, a rhombus, a
circle, a hollow structure or a solid structure.
Referring to FIG. 2 and FIG 3, in the present embodiment, the cross
section of the guide rail 1 is a hollow regular hexagon, the included angle
between two adjacent sides of the guide rail 1 is 120 , two adjacent sides
form a V-shaped surface, the left side of the guide groove 3 and the left side
of the adjusting block 4 are both provided with V-shaped grooves 6, and the
included angle of the V-shaped grooves 6 is 120 . V-shaped grooves 6 on
the left side of the guide groove 3 and the left side of the adjusting block 4
are respectively matched with a pair of symmetrical V-shaped surfaces on
the guide rail 1, namely the pair of V-shaped surfaces form four sliding
guide positioning surfaces of the guide rail 1. The front side surface and the
rear side surface of the guide rail 1 are not in contact with the front side
wall
and the rear side wall of the guide groove 3, and wear-resistant sheets 5 are
arranged on both side walls of each V-shaped groove 6.
The second embodiment:
Referring to FIG 4 and FIG. 5, the present embodiment differs from the
first embodiment in that the guide rail 101 is rhombus in cross section, and
four sides form four sliding guide positioning surfaces of the guide rail 101.
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However, neither the front side edge nor the rear side edge of the guide rail
101 is in contact with the front side wall or the rear side wall of the guide
groove 103. The V-shaped grooves 106 on the left side of the guide groove
103 and the left side of the adjusting block 104 are adapted to a pair of
symmetrical V-shaped surfaces on the guide rail 101. In the embodiment, the
guide rail 101 is of a hollow structure, and in order to reinforce the bearing
capacity of the guide rail 101, a reinforcing rib 121 is arranged in the guide
rail 101, and two sides of each reinforcing rib 121 are respectively connected
with the left side edge and the right side edge of the guide rail 101.
In addition, threaded holes 107 are formed in the front and rear sides of
the adjusting block 104, strip-shaped holes 108 are formed in the front and
rear side walls of the guide groove 103, and the length direction of the
strip-shaped hole 108 is perpendicular to the axial direction of the guide
rail
101.
In the assembling process of the power head bracket 102 and the guide
rail 101, the guide rail 101 is laid flat, the guide groove 103 provided with
two wear-resistant sheets 105 is sleeved on the guide rail 101 from the left
side, and the other two wear-resistant sheets 105 and the adjusting block 104
are placed on the right side of the guide groove 103. The fixing block 110 is
mounted on the power head bracket 102, and adjusting bolt 111 abuts against
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the adjusting block 104. The friction force between the power head bracket
102 and the guide rail 101 is adjusted, and after appropriate parameters are
achieved, the adjusting block 104 and the power head bracket 102 are locked
by a locking screw 109, so that the assembly work is completed.
As can be seen, the guide rail structure of the embodiment is simple to
assemble, special equipment and tools are not needed, parts at the two ends
of the guide rail of the drilling machine bracket do not need to be
disassembled, and batch production and assembly are facilitated. When the
wear-resistant sheet 105 is worn after working for a period of time, the
Jo locking screw 109 can be loosened, the friction force between the power
head bracket 102 and the guide rail 101 is adjusted again, and similarly, the
wear-resistant sheet 105 can be conveniently replaced. Therefore, the
drilling precision of the drilling machine can be kept for a long time, the
abrasion of related parts is reduced, the coaxiality between the motion track
of the power head bracket 102 and the guide rail 101 is high, and the
condition that the power head shakes is prevented.
Although the present invention has been described in detail with
reference to the preferred embodiments, it is to be understood that the
present invention is not limited to the above-described embodiments. It is
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intended to be within the scope of the present invention as long as the
technical effects of the present invention are achieved by any one of the
same or similar means
Industrial applicability
The guide rail structure provided by the invention adopts a guide
groove with an opening on one side to be installed in a matched mode.
Compared with the traditional closed guide rail structure, the guide rail
structure provided by the invention does not need to specially disassemble
and assemble parts at two ends of the guide rail during assembly. The guide
to rail structure provided by the invention is simple to assemble and also
reduces requirements on assembly sites and equipment. An adjusting block
is detachably arranged so that the wear-resistant sheet can be conveniently
adjusted, and the friction force between the power head bracket and the
guide rail can be adjusted after the wear-resistant sheet is worn. In this
way,
the drilling precision of the drilling machine is kept for a long time, and
the
power head is prevented from shaking.
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