Dismounting device for bearing pin shaft of hydraulic support

Abstract

The utility model relates to a hydraulic support bearing pin shaft dismounting device, and belongs to the technical field of hydraulic support maintenance. Comprising a supporting base, a vertical supporting base plate is fixedly arranged on the front edge of the upper end face of the supporting base, a pin shaft through hole is formed in the center of the supporting base plate, three connecting circular shafts are fixedly arranged on the rear end face of the supporting base plate, and an annular tensioning seat is arranged on the rear side of the supporting base plate and comprises a vertical annular plate; three fixing cylinders are fixedly arranged on the front end face of the annular plate and correspond to the three connecting circular shafts in a one-to-one front-back mode, and a telescopic jack is arranged between the corresponding fixing cylinder and the corresponding connecting circular shaft. Two lug plates which are symmetrical up and down are fixedly arranged at the center of the front end face of the annular plate, a pull rod is inserted between the two lug plates, and the pull rod comprises a threaded shaft on the front side and a linear rod on the rear side; the problems that when an existing hydraulic support is maintained and remanufactured, the bearing pin shaft disassembling efficiency is low, and the labor intensity is large are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic support maintenance, and particularly relates to a disassembly device for a bearing pin shaft of a hydraulic support. Background Art

[0002] At present, the technology of the domestic coal industry is developing rapidly with the replacement of the old by the new. In the general environment of improving quality and efficiency and reducing costs, coal equipment enterprises repair and remanufacture waste hydraulic supports through professional technologies, processes and equipment, so that their performance is not inferior to that of new equipment, further improving the resource utilization rate, extending the service life of hydraulic supports, and reducing the procurement costs of enterprises. As a bearing pin shaft of a hydraulic support, the four-link pin shaft has a large diameter, and the difficulty in disassembling a hydraulic support is to disassemble the four-link pin shaft. Under complex mine conditions, the bearing pin shaft of a hydraulic support is prone to rust, wear and deformation. Nowadays, the repair of hydraulic supports is basically carried out locally, and the general equipment at repair sites is simple and the professional tools are not comprehensive. When disassembling the four-link pin shaft, it is time-consuming and laborious, increasing certain difficulties for the disassembly of hydraulic supports. The disassembly of the existing old hydraulic support pin shafts is mainly carried out manually, which not only has a large labor intensity but also has low work efficiency. Content of the Utility Model

[0003] The utility model overcomes the deficiencies of the prior art and provides a disassembly device for a bearing pin shaft of a hydraulic support, solving the problems of low disassembly efficiency and large labor intensity of the bearing pin shaft during the repair and remanufacture of hydraulic supports at present.

[0004] In order to achieve the above object, the utility model is realized by the following technical solutions.

[0005] A disassembly device for a bearing pin shaft of a hydraulic support includes a support base. At the front edge of the upper end surface of the support base, a vertical support pad is fixedly arranged. At the center of the support pad, a pin shaft through hole penetrating through the front and back is arranged. On the rear end surface of the support pad, three connecting round shafts are fixedly arranged. Behind the support pad, an annular tensioning seat is arranged. The annular tensioning seat includes a vertical annular plate. At the outer edge of the front end surface of the annular plate, three fixed cylinders are fixedly arranged. The three fixed cylinders correspond to the three connecting round shafts one by one in the front and back. Between the corresponding fixed cylinder and the connecting round shaft, a telescopic jack is arranged. At the center of the front end surface of the annular plate, two symmetrically arranged upper and lower ear plates are fixedly arranged. Between the two ear plates, a pull rod is inserted. The pull rod includes a threaded shaft at the front side and a straight rod at the rear side.

[0006] Further, the support base includes a top frame, a bottom frame, support rods, and telescopic rods. The top frame and the bottom frame are both horizontally arranged square frame structures, and the top frame and the bottom frame are arranged corresponding to each other up and down. At the four corners of the lower end face of the top frame, a vertical support rod is respectively fixedly arranged, and the lower outer sides of the four support rods are respectively fixedly connected to the four corners of the bottom frame.

[0007] Further, the support rod is a square tubular structure with an open lower end. A row of vertically arranged outer adjustment holes is provided on the side wall of the support rod; the telescopic rod is inserted inside the support rod. A row of vertically arranged inner adjustment holes is provided on the telescopic rod. A lockable universal wheel is fixedly arranged at the lower end of the telescopic rod; the inner adjustment holes on the telescopic rod correspond to the outer adjustment holes on the support rod. A fixing bolt is inserted into the corresponding inner adjustment hole and outer adjustment hole, and a fixing nut is screwed on the fixing bolt.

[0008] Further, three connecting circular shafts are arranged in a circular array around the axis of the pin shaft through hole. The axis of the connecting circular shaft is perpendicular to the rear end face of the support pad. A front fixing hole is arranged along the radial direction of the connecting circular shaft.

[0009] Further, a groove hole is arranged at one end of the piston rod of the telescopic jack. The connecting circular shaft is inserted into the groove hole at the end of the piston rod of the telescopic jack, and the piston rod of the telescopic jack is fixedly connected to the connecting circular shaft by passing a connecting pin through the front fixing hole on the connecting circular shaft and one end of the piston rod of the telescopic jack.

[0010] Further, handrails are fixedly arranged in the middle of the left and right side edges of the support pad.

[0011] Further, the ear plates are horizontally arranged. Two front and rear outer insertion holes are arranged on the two ear plates, and the outer insertion holes on the upper and lower ear plates correspond one by one; a row of inner insertion holes is arranged along the length direction on the straight rod of the pull rod. The two inner insertion holes on the straight rod of the pull rod correspond to the two outer insertion holes on the ear plates. A fixing bolt is inserted into the corresponding outer insertion hole and inner insertion hole, and a fixing nut is screwed on the fixing bolt.

[0012] Further, three fixing cylinders are arranged in a circular array along the axis of the annular plate; the fixing cylinder is a cylindrical structure with an open front end. A rear fixing hole is arranged on the side wall of the fixing cylinder.

[0013] Further, one end of the cylinder bottom of the telescopic jack is inserted into the fixing cylinder, and the cylinder bottom end of the telescopic jack is fixedly connected to the fixing cylinder by passing a connecting pin through the rear fixing hole on the fixing cylinder and one end of the cylinder bottom of the telescopic jack.

[0014] Furthermore, the pull rod is horizontally arranged along the front-back direction.

[0015] The beneficial effects of the present utility model relative to the prior art are as follows:

[0016] A dismounting device for the bearing pin of a hydraulic support provided by the present utility model solves the problems of low disassembly efficiency and high labor intensity of the bearing pin during the maintenance and remanufacture of the current hydraulic support, reduces the labor intensity, and improves the work efficiency; it is made of common square tubes welded together, has good tensile properties, is easy to operate, and has a long service life; the structure is simple, can be adjusted up and down in height, can be applied to different working environments, and saves the equipment procurement cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following further describes the present utility model in detail with reference to the drawings:

[0018] Figure 1 is a side view between the present utility model and the support base;

[0019] Figure 2 is a rear view between the present utility model and the support base;

[0020] Figure 3 is an axonometric view between the present utility model and the support base;

[0021] Figure 4 is a three-dimensional schematic diagram of the present utility model;

[0022] Figure 5 is a connection schematic diagram between the support base and the support pad;

[0023] Figure 6 is a three-dimensional schematic diagram of the annular tension seat;

[0024] Figure 7 is a three-dimensional schematic diagram of the telescopic rod;

[0025] Among them, 1 is the support base, 2 is the annular tension seat, 3 is the telescopic jack, 4 is the pull rod, 5 is the telescopic rod, 6 is the connecting pin, 7 is the support base of the support, 8 is the bearing pin, 9 is the universal wheel, 11 is the support pad, 12 is the support rod, 13 is the connecting round shaft, 14 is the handrail, 15 is the snap ring, 21 is the annular plate, 22 is the ear plate, and 23 is the fixed cylinder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail in conjunction with the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. The technical solutions of the present utility model will be described in detail below in conjunction with the embodiments and the accompanying drawings, but the protection scope is not limited by this.

[0027] As Figure 1 —7 shows, the present utility model provides a hydraulic support bearing pin removal device, including a support base 1. The support base 1 includes a top frame, a bottom frame, a support rod 12, and a telescopic rod 5. Both the top frame and the bottom frame are horizontally arranged square frame structures, and the top frame and the bottom frame are arranged corresponding to each other up and down. At the four corners of the lower end face of the top frame, a vertical support rod 12 is respectively fixedly arranged. The outer sides of the four support rods 12 are respectively fixedly connected to the four corners of the bottom frame.

[0028] An X-shaped reinforcing rod is fixedly arranged between the two support rods 12 on the front side and between the two support rods 12 on the rear side. The X-shaped reinforcing rod is fixedly connected to both the top frame and the bottom frame at the same time. A vertical linear reinforcing rod is fixedly arranged between the middle parts of the left and right side edges of the top frame and between the middle parts of the left and right side edges of the top frame. A snap ring 15 is fixedly arranged in the middle of the rear end face of the top frame, and the support base 1 is carried by the snap ring 15.

[0029] The support rod 12 is a square tubular structure with an open lower end. A row of vertically arranged outer adjustment holes is provided on the side wall of the support rod 12. The telescopic rod 5 is inserted into the support rod 12. The telescopic rod 5 is a vertically arranged square rod structure. The upper end of the telescopic rod 5 is inserted into the open lower end of the support rod 12. A row of vertically arranged inner adjustment holes is provided on the telescopic rod 5. A lockable universal wheel 9 is fixedly arranged at the lower end of the telescopic rod 5. The inner adjustment holes on the telescopic rod 5 correspond to the outer adjustment holes on the support rod 12. A fixing bolt is inserted into the corresponding inner adjustment hole and outer adjustment hole, and a fixing nut is screwed onto the fixing bolt. The support rod 12 and the telescopic rod 5 are fixed by the fixing bolt and the fixing nut. By corresponding different outer adjustment holes to the inner adjustment holes, the insertion length of the telescopic rod 5 inside the support rod 12 can be adjusted, so as to adjust the overall height of the support base 1.

[0030] At the front edge of the upper end surface of the top frame of the support base 1, a vertical support backing plate 11 is fixedly arranged. At the center of the support backing plate 11, a pin through-hole penetrating from front to back is arranged, and the inner diameter of the pin through-hole is larger than the outer diameter of the load-bearing pin 8. On the rear end surface of the support backing plate 11, three connecting round shafts 13 are fixedly arranged. The three connecting round shafts 13 are circularly arranged around the axis of the pin through-hole. The axis of the connecting round shaft 13 is perpendicular to the rear end surface of the support backing plate 11. On the connecting round shaft 13, a front-side fixing hole is arranged along its radial direction. At the middle parts of the left and right side edges of the support backing plate 11, handrails 14 are fixedly arranged.

[0031] At the rear side of the support backing plate 11, an annular tensioning seat 2 is arranged. The annular tensioning seat 2 includes a vertical annular plate 21, and the annular plate 21 is in the shape of a circular ring plate 21. At the center of the front end surface of the annular plate 21, two vertically symmetrical ear plates 22 are fixedly arranged. The ear plates 22 are horizontally arranged. On the two ear plates 22, two front and rear outer insertion holes are arranged, and the outer insertion holes on the upper and lower two ear plates 22 correspond one by one. At the outer edge of the front end surface of the annular plate 21, three fixing cylinders 23 are fixedly arranged. The three fixing cylinders 23 are circularly arranged along the axis of the annular plate 21. The fixing cylinder 23 is in the shape of a cylindrical structure with an open front end. On the side wall of the fixing cylinder 23, a rear-side fixing hole is arranged.

[0032] A pull rod 4 is inserted between the two ear plates 22. The pull rod 4 is horizontally arranged along the front and rear direction. The pull rod 4 includes a front-side threaded shaft and a rear-side straight rod. An external thread is arranged on the outer side surface of the front-side threaded shaft. Along the length direction of the straight rod, a row of inner insertion holes is arranged. The two inner insertion holes on the straight rod of the pull rod 4 correspond to the two outer insertion holes on the ear plates 22. A fixing bolt is inserted into the corresponding outer insertion hole and inner insertion hole, and a fixing nut is screwed on the fixing bolt to fix the pull rod 4 and the annular plate 21 through the fixing bolt and the fixing nut.

[0033] The three fixing cylinders 23 and the three connecting round shafts 13 correspond to each other one by one in the front and rear direction. An expansion jack 3 is arranged between the corresponding fixing cylinder 23 and the connecting round shaft 13. The bottom end of the cylinder of the expansion jack 3 is inserted into the fixing cylinder 23, and the bottom end of the cylinder of the expansion jack 3 is fixedly connected with the fixing cylinder 23 by a connecting pin 6 passing through the rear-side fixing hole on the fixing cylinder 23 and the bottom end of the cylinder of the expansion jack 3. A groove hole is arranged at the piston rod end of the expansion jack 3. The connecting round shaft 13 is inserted into the groove hole at the piston rod end of the expansion jack 3, and the piston rod of the expansion jack 3 is fixedly connected with the connecting round shaft 13 by a connecting pin 6 passing through the front-side fixing hole on the connecting round shaft 13 and the piston rod end of the expansion jack 3.

[0034] The working principle of the present utility model is as follows:

[0035] Move the support base 1 to the load-bearing pin shaft 8 on the bracket base 7 so that the support backing plate 11 closely abuts against the outer main reinforcement of the bracket base 7. By corresponding the outer adjustment holes with different inner adjustment holes, the insertion length of the telescopic rod 5 inside the support rod 12 can be adjusted, thereby adjusting the overall height of the support base 1 so that the pin hole on the support backing plate 11 corresponds to the load-bearing pin shaft 8.

[0036] Then insert the pull rod 4 between the two ear plates 22, and screw the threaded shaft at the front end of the pull rod 4 into the load-bearing pin shaft 8. Then fix the straight rod of the pull rod 4 to the two ear plates 22 through the fixing nut and the fixing nut.

[0037] Then control the piston rods of the three telescopic jacks 3 to extend synchronously, so that the distance between the annular plate 21 and the support backing plate 11 becomes larger. The annular plate 21 drives the pull rod 4 to move away from the support backing plate 11 through the ear plates 22, and the pull rod 4 drives the load-bearing pin shaft 8 to move outward until the load-bearing pin shaft 8 is completely pulled out, thus realizing the disassembly of the load-bearing pin shaft 8.

[0038] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A hydraulic support bearing pin disassembly device, characterized in that: The invention comprises a support base (1), a vertical support pad (11) is fixedly arranged at the front edge of the upper end face of the support base (1), a pin shaft through hole is arranged at the center of the support pad (11) and passes through the support pad (11) from front to back, three connecting circular shafts (13) are fixedly arranged on the rear end face of the support pad (11), and an annular tensioning seat (2) is arranged on the rear side of the support pad (11), wherein the annular tensioning seat (2) comprises a vertical annular plate (21) and a pin shaft through hole is arranged on the front end face of the annular plate (21). Three fixed cylinders (23) are fixedly arranged at the side edge, and the three fixed cylinders (23) correspond to the three connecting circular shafts (13) one by one in front and back, and a telescopic jack (3) is arranged between the corresponding fixed cylinders (23) and the connecting circular shafts (13); two upper and lower symmetrical ear plates (22) are fixedly arranged at the center of the front end surface of the annular plate (21), and a pull rod (4) is inserted between the two ear plates (22), and the pull rod (4) includes a threaded shaft on the front side and a linear rod on the rear side.

2. A hydraulic support bearing pin disassembly device according to claim 1, characterized in that: The support base (1) comprises a top frame, a bottom frame, a support rod (12), and a telescopic rod (5); the top frame and the bottom frame are both horizontally arranged square frame structures; the top frame and the bottom frame are arranged correspondingly up and down; a vertical support rod (12) is fixedly arranged at each of the four corners of the lower end surface of the top frame; and the lower ends of the outer side surfaces of the four support rods (12) are fixedly connected to the four corners of the bottom frame.

3. A hydraulic support bearing pin disassembly device according to claim 2, characterized in that: The support rod (12) is a square tubular structure with an opening at the lower end, and a row of vertically arranged outer adjustment holes is provided on the side wall of the support rod (12); the telescopic rod (5) is inserted into the support rod (12), and a row of vertically arranged inner adjustment holes is provided on the telescopic rod (5); a lockable universal wheel (9) is fixedly provided at the lower end of the telescopic rod (5); the inner adjustment hole of the telescopic rod (5) corresponds to the outer adjustment hole on the support rod (12), and fixing bolts are inserted into the corresponding inner adjustment holes and outer adjustment holes, and fixing nuts are screwed onto the fixing bolts.

4. The hydraulic support bearing pin disassembly device according to claim 1, characterized in that: Three connecting circular shafts (13) are arranged in a circular array around the axis of the pin shaft through hole, the axis of the connecting circular shaft (13) is perpendicular to the rear end surface of the support pad (11), and a front fixing hole is arranged on the connecting circular shaft (13) along its radial direction.

5. A hydraulic support bearing pin disassembly device according to claim 4, characterized in that: A groove hole is provided at one end of the piston rod of the telescopic jack (3), the connecting shaft (13) is inserted into the groove hole at the end of the piston rod of the telescopic jack (3), and the piston rod of the telescopic jack (3) is fixedly connected to the connecting shaft (13) by passing a connecting pin shaft (6) through a front fixing hole on the connecting shaft (13) and one end of the piston rod of the telescopic jack (3).

6. The hydraulic support bearing pin disassembly device according to claim 1, characterized in that: An armrest (14) is fixedly arranged at the middle of the left and right edges of the support pad (11).

7. The hydraulic support bearing pin disassembly device according to claim 1, characterized in that: The ear plates (22) are arranged horizontally, and two front and rear outer plug holes are arranged on the two ear plates (22), and the outer plug holes on the upper and lower ear plates (22) correspond to each other one by one; a row of inner plug holes is arranged on the straight rod of the pull rod (4) along its length direction, and the two inner plug holes on the straight rod of the pull rod (4) correspond to the two outer plug holes on the ear plates (22), and fixing bolts are inserted into the corresponding outer plug holes and inner plug holes, and fixing nuts are screwed on the fixing bolts.

8. The hydraulic support bearing pin disassembly device according to claim 1, characterized in that: The three fixing cylinders (23) are arranged in a circular array along the axis of the annular plate (21); the fixing cylinders (23) are cylindrical structures with an open front end, and rear fixing holes are arranged on the side walls of the fixing cylinders (23).

9. A hydraulic support bearing pin disassembly device according to claim 8, characterized in that: One end of the cylinder bottom of the telescopic jack (3) is inserted into the interior of the fixed cylinder (23), and a connecting pin (6) passes through a rear fixing hole on the fixed cylinder (23) and one end of the cylinder bottom of the telescopic jack (3), so that the one end of the cylinder bottom of the telescopic jack (3) is fixedly connected to the fixed cylinder (23).

10. The hydraulic support bearing pin disassembly device according to claim 1, characterized in that: The pull rod (4) is arranged horizontally along the front-rear direction.

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