CN219075522U

CN219075522U - Hydraulic tool for dismantling mining support pin shaft

Info

Publication number: CN219075522U
Application number: CN202222544451.4U
Authority: CN
Inventors: 司军; 康晓泽; 肖杨; 许丁丁; 高世锟; 赵俊杰; 李生泽; 张勇
Original assignee: Jinneng Holding Coal Group Co Ltd
Current assignee: Jinneng Holding Coal Group Co Ltd
Priority date: 2022-09-26
Filing date: 2022-09-26
Publication date: 2023-05-26
Anticipated expiration: 2032-09-26

Abstract

The utility model belongs to the technical field of auxiliary tools for dismantling pin shafts, in particular to a hydraulic tool for dismantling a mining support pin shaft, which solves the technical problems in the background art and comprises a supporting bottom plate, a travel plate and a connecting plate, wherein two hydraulic jacks are fixedly connected to the supporting bottom plate; the end part of the travel plate is provided with a U-shaped notch, a stop block is welded on the U-shaped notch, a mounting through hole is formed in the middle of the stop block, a bolt is arranged in the mounting through hole in a penetrating mode, and the head of the bolt is clamped with the stop block; the two hydraulic jacks are connected to the hydraulic system respectively. The pin shaft can be easily detached through the hydraulic tool, labor force can be greatly reduced by using the tool, working time is shortened, and universality is achieved.

Description

Hydraulic tool for dismantling mining support pin shaft

Technical Field

The utility model belongs to the technical field of auxiliary tools for removing pin shafts, and particularly relates to a hydraulic tool for removing a mining support pin shaft.

Background

In the coal mine, sometimes the mine height is insufficient, the hydraulic support is difficult to integrally transport to the working face, and the hydraulic support structure part needs to be disassembled on the well, and then assembled after entering the working face. Or when the working face of the coal mining machine or other machines in use is withdrawn, the coal mining machine or other machines need to be transported in a split mode, but because the underground environment is wet, the machines are easy to rust and corrode, the pin shafts are difficult to remove in the manual pin shaft removing process, the labor intensity of workers is high, the working efficiency is extremely low, the working time is too long, and the safety is not guaranteed.

Disclosure of Invention

The utility model aims to solve the technical problems that when a pin shaft is manually dismounted at present, the labor intensity of workers is high, the working efficiency is extremely low, the working time is too long, and the safety is not guaranteed, and provides a hydraulic tool for dismounting a mining support pin shaft.

The technical means adopted for solving the technical problems are as follows: the hydraulic tool for dismantling the mining support pin shaft comprises a supporting bottom plate, a travel plate and at least one connecting plate, wherein two hydraulic jacks are fixedly connected to the supporting bottom plate, the moving direction of each hydraulic jack is perpendicular to the plate surface of the supporting bottom plate, an avoidance through hole for penetrating the pin shaft is formed in the supporting bottom plate between the two hydraulic jacks, two ends of the connecting plate are fixedly connected with the moving ends of the two hydraulic jacks respectively, the travel plate is positioned between the two hydraulic jacks, a plurality of first pin holes are formed in the travel plate and are arranged along the extending and retracting directions of the hydraulic jacks, at least one second pin hole is formed in the middle of the connecting plate, and fastening bolts are penetrated into the corresponding first pin holes and the second pin holes after the connecting plate and the travel plate are stacked; the end part of the travel plate, which is close to the supporting bottom plate, is provided with a U-shaped notch, a stop block is welded at the end part of the U-shaped notch, which is close to the supporting bottom plate, a mounting through hole with an axis perpendicular to the plane of the supporting bottom plate is arranged in the middle of the stop block, a bolt for connecting a pin shaft is arranged in the mounting through hole in a penetrating manner, and the head part of the bolt is clamped with the stop block; the two hydraulic jacks are connected to the hydraulic system respectively.

Preferably, the whole rectangular form that is of connecting plate, the middle part extension of connecting plate has perpendicular to connecting plate length direction's linking arm, and the quantity of second pinhole is two, and the arrangement direction of two second pinholes is unanimous with the arrangement direction of first pinhole, and one of them second pinhole is located the connecting plate, and another second pinhole is located the linking arm, and the interval of two second pinholes equals with the interval of two adjacent first pinholes.

Preferably, the number of the connecting plates is two, the travel plate is clamped between the two connecting plates, and the two ends of the two connecting plates are respectively provided with a connecting lug seat for connecting the telescopic ends of the hydraulic jack.

Preferably, the hydraulic system comprises a hydraulic operation valve, a liquid tank and a hydraulic pump which are connected, wherein liquid inlets of the two hydraulic jacks are connected in parallel through liquid inlet pipes and then connected to liquid outlets of the hydraulic operation valve, liquid outlets of the two hydraulic jacks are connected in parallel through liquid outlet pipes and then connected to liquid inlets of the hydraulic operation valve, and check valves are arranged on the liquid inlet pipes and the liquid outlet pipes.

Preferably, the mounting through hole aperture in the stop is 38mm.

Preferably, the bolt can be replaced by a stud, and the end part of the stud, which is positioned in the U-shaped notch, is in threaded fit with a clamping nut after the stud passes through the mounting through hole of the stop block.

The beneficial effects of the utility model are as follows: the hydraulic lifting tool is simple in structure, low in manufacturing cost and easy to operate, the pin shafts can be easily detached by being matched with the hydraulic lifting tool, when the large support needs to be moved on the fully mechanized mining face, labor force can be greatly reduced, working time is shortened, time is striven for moving the large support, safety factors of workers are guaranteed, pin shafts of various thread specifications can be pulled out, and the hydraulic lifting tool is universal.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of the overall structure of a hydraulic tool for removing a pin shaft of a mining bracket according to the utility model.

In the figure: 1. a support base plate; 2. a travel plate; 3. a connecting plate; 4. a hydraulic jack; 5. a pin shaft; 6. avoiding the through hole; 7. a first pin hole; 8. a second pin hole; 9. fastening a bolt; 10. a U-shaped notch; 11. a stop block; 12. mounting through holes; 13. a bolt; 14. a connecting arm; 15. a hydraulically operated valve; 16. a liquid tank; 17. a hydraulic pump.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In a specific embodiment, as shown in fig. 1, a hydraulic tool for removing a pin roll of a mining bracket comprises a supporting bottom plate 1, a travel plate 2 and at least one connecting plate 3, wherein two hydraulic jacks 4 are fixedly connected to the supporting bottom plate 1, the moving direction of each hydraulic jack 4 is perpendicular to the plate surface of the supporting bottom plate 1, an avoidance through hole 6 for penetrating the pin roll 5 is formed in the supporting bottom plate 1 between the two hydraulic jacks 4, two ends of the connecting plate 3 are respectively fixedly connected with the moving ends of the two hydraulic jacks 4, the travel plate 2 is positioned between the two hydraulic jacks 4, a plurality of first pin holes 7 arranged along the extending direction of the hydraulic jacks 4 are formed in the travel plate 2, at least one second pin hole 8 is formed in the middle of the connecting plate 3, and a fastening bolt 9 is arranged in the corresponding first pin hole 7 and the second pin hole 8 after the connecting plate 3 and the travel plate 2 are stacked; the end part of the travel plate 2, which is close to the supporting bottom plate 1, is provided with a U-shaped notch 10, a stop block 11 is welded at the end part of the U-shaped notch 10, which is close to the supporting bottom plate 1, a mounting through hole 12 with the axis vertical to the plane of the supporting bottom plate 1 is arranged in the middle of the stop block 11, a bolt 13 for connecting the pin shaft 5 is arranged in the mounting through hole 12 in a penetrating manner, and the head part of the bolt 13 is clamped with the stop block 11; the two hydraulic jacks 4 are connected to the hydraulic system respectively.

Specifically, the supporting base plate 1 is supported against the support at the periphery of the pin 5, the avoidance through hole 6 on the supporting base plate 1 is aligned with the end of the pin 5, the hydraulic jack 4 is fixed on the supporting floor, that is, the hydraulic jack 4 is lifted, one end of the hydraulic jack 4 is fixed on the supporting base plate 1, the other end is connected with the end of the connecting plate 3, and as will be understood by those skilled in the art, the end of the hydraulic jack 4 can be fixedly connected with the supporting base plate 1 or the connecting plate 3 through a fastening bolt 13 and nut assembly or other fixing pieces. In specific implementation, the stroke plate 2 is in a strip structure, the first pin holes 7 on the stroke plate 2 are arranged along the length direction of the stroke plate 2, specifically, the number of the first pin holes 7 is seven, the stroke plate 2 is positioned between two hydraulic jacks 4 and connected to the middle of the connecting plate 3, and the connecting plate 3 and the stroke plate 2 are connected through the first pin holes 7 and the second pin holes 8 in a butt joint mode and then are inserted into the fastening bolts 9 to realize connection.

Specifically, the number of the second pin holes 8 is smaller than that of the first pin holes 7, and the connecting plate 3 can be fixed at different positions of the stroke plate 2 so as to meet the stroke requirement of pulling out pins. It will be appreciated by those skilled in the art that when the connecting plate 3 is required to be moved to a different position of the travel plate 2, the travel plate 2 and the connecting plate 3 may be secured by simply pulling the securing latch off and then reinserting it in the aligned first and

second pin holes

7 and 8.

Specifically, a U-shaped notch 10 is arranged on the travel plate 2, the U-shaped notch 10 faces the pin shaft 5 to be disassembled, a stop block 11 is welded in the U-shaped notch 10, the stop block 11 is used for installing a bolt 13, the length of the bottom of the U-shaped notch 10, which is far from the stop block 11, needs to meet the requirement that the bolt 13 can be inserted into an installation through hole 12 from the position, the bolt 13 is a fastener consisting of a head part and a screw rod, after the bolt 13 passes through the installation through hole 12 on the stop block 11, the head part of the bolt 13 is clamped onto the stop block 11, and the screw rod end part of the bolt 13 is fixedly connected into a hole at the end part of the pin shaft 5 to be disassembled. It will be appreciated by those skilled in the art that depending on the size of the pin 5 to be removed, different sizes and types of bolts 13 may be selected, and the mounting through holes 12 in the block 11 may be engaged with different sizes and types of bolts 13.

Specifically, the hydraulic jacks 4 can be controlled by the hydraulic system at the same time, and when the hydraulic jack works specifically, the two hydraulic jacks 4 can stretch out and draw back at the same time, so as to drive the connecting plate 3, the travel plate 2, the bolts 13 and the pin shaft 5 with disassembly to move at the same time.

The hydraulic tool for dismantling the mining support pin shaft disclosed by the utility model is characterized in that when in specific work: the travel plate 2 and the connecting plate 3 are fixedly connected through a fixed bolt, and then a bolt 13 is arranged on a stop block 11 at the end part of the travel plate 2 in a penetrating way; the support base plate 1 is fixed on a support, the avoidance through holes 6 on the support base plate 1 are aligned with the pin shafts 5 to be dismounted, the bolts 13 are connected with the pin shafts 5 to be dismounted, the two hydraulic jacks 4 are controlled by a hydraulic system to move in the direction away from the support base plate 1 at the same time, the pin shafts 5 are driven to be pulled out of the support, when the hydraulic jacks 4 do not have strokes and the pin shafts 5 are not pulled out of the support, the fixed bolts on the connecting plate 3 and the stroke plate 2 are pulled out, the stroke plate 2 and the connecting plate 3 are separated, the two hydraulic jacks 4 are controlled by the hydraulic system to move in the direction close to the support base plate 1 at the same time, the connecting plate 3 is driven to retract in the moving process of the hydraulic jacks 4, after the connecting plate 3 is aligned with the first pin holes 7 on the stroke plate 2, the fixed bolts are inserted, the two hydraulic jacks 4 are controlled by the hydraulic system to move in the direction away from the support base plate 1 at the same time again, and the bolts 13 are driven until the pin shafts 5 are pulled out of the support.

Further, as a specific implementation manner of the above embodiment, the connecting plate 3 is in a strip shape as a whole, the middle part of the connecting plate 3 extends with connecting arms 14 perpendicular to the length direction of the connecting plate 3, the number of the second pin holes 8 is two, the arrangement direction of the two second pin holes 8 is consistent with the arrangement direction of the first pin holes 7, one second pin hole 8 is located on the connecting plate 3, the other second pin hole 8 is located on the connecting arms 14, and the distance between the two second pin holes 8 is equal to the distance between the two adjacent first pin holes 7.

Specifically, after the middle part of the connecting plate 3 extends the connecting arm 14, the connecting arm 14 is shaped like a T, but the length of the connecting arm 14 is very short, and only one second pin hole 8 needs to be accommodated. Two second pin holes 8 are movable along a plurality of first pin holes 7 on the stroke plate 2; the distance between the two second pin holes 8 is equal to the distance between the two adjacent first pin holes 7, so that the arrangement structure is reasonable.

Further, as a specific implementation manner of the above embodiment, the number of the connecting plates 3 is two, the stroke plate 2 is clamped between the two connecting plates 3, and two ends of the two connecting plates 3 respectively form a connecting lug seat for connecting the telescopic ends of the hydraulic jack 4.

Specifically, the travel plate 2 is clamped between the two connecting plates 3, so that the connecting structure of the connecting plates 3 and the travel plate 2 connected through the fixed bolt is firmer, and the structure of the two connecting plates 3 connected with the hydraulic jack 4 is more reasonable and firmer.

Further, the hydraulic system comprises a hydraulic operation valve 15, a liquid tank 16 and a hydraulic pump 17 which are connected, liquid inlets of the two hydraulic jacks 4 are connected in parallel through liquid inlet pipes and then connected to liquid outlets of the hydraulic operation valve 15, liquid outlets of the two hydraulic jacks 4 are connected in parallel through liquid outlet pipes and then connected to liquid inlets of the hydraulic operation valve 15, and check valves are arranged on the liquid inlet pipes and the liquid outlet pipes.

Specifically, the one-way valve on the liquid inlet pipe can ensure that the liquid coming out of the liquid outlet of the hydraulic operation valve 15 can enter the two hydraulic jacks 4 along the pipeline from the liquid inlet; the one-way valve on the liquid outlet pipe can ensure that liquid can enter the liquid inlet of the hydraulic operation valve 15 from the liquid outlets of the two hydraulic jacks 4 along the pipeline; the hydraulic jack 4 can be simultaneously operated to extend and retract by the hydraulic operation valve 15. The connections between the hydraulic jack 4, the hydraulic operating valve 15, the hydraulic pump 17 and the tank 16 are the same as in the prior art and will be readily apparent to those skilled in the art.

Further, the aperture of the mounting through hole 12 in the stopper 11 is 38mm.

Specifically, the aperture of the mounting through hole 12 is 38mm, which is basically suitable for the largest screw hole of the existing pin shaft 5 on the mine, and the M36 bolt 13 can be directly mounted.

Preferably, the bolt 13 can be replaced by a stud, and the end of the stud, which is positioned in the U-shaped notch 10 after passing through the mounting through hole 12 of the stop block 11, is in threaded fit with a clamping nut.

Specifically, when the length of the bolt 13 is insufficient to meet the requirement, the bolt 13 is replaced by a stud, and after the stud passes through the mounting through hole 12, the stud is clamped with the stop block 11 by matching with a clamping nut. Nor does the length of the stud need to take into account the length of the U-shaped gap 10.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims

1. The hydraulic tool for dismantling the mining support pin shaft is characterized by comprising a supporting bottom plate (1), a travel plate (2) and at least one connecting plate (3), wherein two hydraulic jacks (4) are fixedly connected to the supporting bottom plate (1), the moving direction of each hydraulic jack (4) is perpendicular to the plate surface of the supporting bottom plate (1), an avoidance through hole (6) for penetrating the pin shaft (5) is formed in the supporting bottom plate (1) between the two hydraulic jacks (4), two ends of the connecting plate (3) are fixedly connected with the moving ends of the two hydraulic jacks (4) respectively, the travel plate (2) is positioned between the two hydraulic jacks (4), a plurality of first pin holes (7) which are arranged along the extending and retracting directions of the hydraulic jacks (4) are formed in the travel plate (2), at least one second pin hole (8) is formed in the middle of the connecting plate (3), and fastening (9) are arranged in the corresponding first pin holes (7) and second pin holes (8) after the connecting plate (3) and the travel plate (2) are stacked; the end part of the travel plate (2) close to the supporting bottom plate (1) is provided with a U-shaped notch (10), a stop block (11) is welded at the port of the U-shaped notch (10) close to the supporting bottom plate (1), an installation through hole (12) with the axis perpendicular to the plane of the supporting bottom plate (1) is arranged in the middle of the stop block (11), a bolt (13) for connecting the pin shaft (5) is arranged in the installation through hole (12) in a penetrating way, and the head part of the bolt (13) is clamped with the stop block (11); two hydraulic jacks (4) are respectively connected to the hydraulic system.

2. The hydraulic tool for removing the mining support pin shaft according to claim 1, wherein the connecting plate (3) is integrally in a strip shape, connecting arms (14) perpendicular to the length direction of the connecting plate (3) extend from the middle of the connecting plate (3), the number of the second pin holes (8) is two, the arrangement direction of the two second pin holes (8) is consistent with the arrangement direction of the first pin holes (7), one second pin hole (8) is located on the connecting plate (3), the other second pin hole (8) is located on the connecting arms (14), and the distance between the two second pin holes (8) is equal to the distance between the two adjacent first pin holes (7).

3. The hydraulic tool for removing the mining support pin shaft according to claim 2, wherein the number of the connecting plates (3) is two, the stroke plate (2) is clamped between the two connecting plates (3), and two ends of the two connecting plates (3) are respectively provided with a connecting lug seat for connecting the telescopic ends of the hydraulic jack (4).

4. A hydraulic tool for removing a mining support pin according to any one of claims 1 to 3, characterized in that the hydraulic system comprises a hydraulic operation valve (15), a liquid tank (16) and a hydraulic pump (17) which are connected, wherein liquid inlets of the two hydraulic jacks (4) are connected in parallel through liquid inlet pipes and then connected to liquid outlets of the hydraulic operation valve (15), liquid outlets of the two hydraulic jacks (4) are connected in parallel through liquid outlet pipes and then connected to liquid inlets of the hydraulic operation valve (15), and the liquid inlet pipes and the liquid outlet pipes are provided with one-way valves.

5. A hydraulic tool for removing a pin for a mine support according to claim 4, wherein the aperture of the mounting through hole (12) in the stopper (11) is 38mm.

6. The hydraulic tool for removing the pin shaft of the mining support according to claim 5, wherein the bolt (13) can be replaced by a stud, and the end of the stud, which is positioned in the U-shaped notch (10) after passing through the mounting through hole (12) of the stop block (11), is in threaded fit with a clamping nut.