Pin dismounting device for hydraulic jack

Abstract

The utility model relates to the technical field of pin dismounting devices, in particular to a hydraulic jack pin dismounting device which comprises a fixing face, a pin shaft is installed in the fixing face, one end of the pin shaft is fixedly connected to one end of a guide stroke screw rod, and the end, away from the pin shaft, of the guide stroke screw rod is connected with a first fastening nut. A circular-truncated-cone-shaped abutting block is arranged on one side of the first fastening nut, a hydraulic jack body is arranged below the circular-truncated-cone-shaped abutting block, a hydraulic shaft is slidably connected to the top of the hydraulic jack body, an upper bracket is arranged outside the hydraulic shaft, a sliding hole is formed in the upper bracket, and a first bolt is slidably connected to the interior of the sliding hole. Four groups of first bolts are provided, the four groups of first bolts are linearly distributed on the upper bracket, and a support frame is arranged below the hydraulic jack body; by operating the hydraulic jack body, the guide stroke screw rod can pull out the pin shaft, so that manual pulling is not needed, the manpower burden is reduced, and meanwhile, the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pin device technical field especially relates to hydraulic jack pin device. BACKGROUND

[0002] Pin shaft is a kind of standard fastener, both static fixed connection, also can be relative motion with the connected piece, mainly used for the hinge joint of two parts, constitutes hinge connection. Pin shaft is usually locked with split pin, reliable in operation, easy to disassemble.

[0003] The pin shaft of the machine body of the fully mechanized continuous mining equipment is installed, and the pin shaft is corroded and worn due to the nature of the underground working environment or the failure to maintain in time, etc. The pin shaft is time-consuming and labor-consuming to disassemble, which brings difficulties and inconvenience to the maintenance work. The previous method is to disassemble the pin shaft by impact method, and two to four fitters are needed to cooperate with the operation of the hammer, and the number depends on the tightness of the pin shaft and its position height. This operation mode has limitations and low efficiency.

[0004] Therefore, in view of the problem that the prior art is not convenient for disassembling the pin shaft, a hydraulic jack pin device can be designed, the guide stroke screw rod can pull out the pin shaft by operating the hydraulic jack body, so that manual pulling is not needed, the labor burden is reduced, and the working efficiency is improved. UTILITY MODEL CONTENTS

[0005] In order to overcome the problem that the prior art is not convenient for disassembling the pin shaft.

[0006] The technical scheme of the utility model is as follows: a hydraulic jack pin device, comprising a fixed surface, the fixed surface is a device body, a pin shaft is installed in the inside of the fixed surface, one end of the pin shaft is fixedly connected to one end of a guide stroke screw rod, a first fastening nut is connected to the end of the guide stroke screw rod away from the pin shaft, a circular truncated cone abutting block is arranged on one side of the first fastening nut, a hydraulic jack body is arranged below the circular truncated cone abutting block, a hydraulic shaft is slidably connected to the top of the hydraulic jack body, an upper bracket is arranged on the outside of the hydraulic shaft, a sliding hole is formed in the inside of the upper bracket, a first bolt is slidably connected to the inside of the sliding hole, there are four groups of first bolts, the four groups of first bolts are linearly distributed on the upper bracket, a support frame is arranged below the hydraulic jack body, the extension part of the support frame is two steel plates, the two steel plates form a group, four groups of steel plates are linearly distributed on the outside of the support frame, a second bolt is arranged between the two steel plates, a third fastening nut is slidably connected to the outer wall of the second bolt, a second fixed nut is welded to the bottom end of the first bolt, and the second fixed nut is welded to the side surface of the steel plate.

[0007] Preferably, by operating the hydraulic jack body, the hydraulic shaft of the hydraulic jack body pushes the circular truncated cone abutting block, the circular truncated cone abutting block pushes the first fastening nut to move outward under force, and since the first fastening nut is connected with the guide stroke screw rod end, the first fastening nut drives the guide stroke screw rod to move outward, the guide stroke screw rod can drive the pin shaft to move outward, so that the pin shaft can be pulled out from the fixed surface, thereby reducing the labor burden and improving the production efficiency.

[0008] Preferably, the hydraulic jack body is externally provided with a connecting port.

[0009] Preferably, the first bolt is externally provided with a gasket, and the gasket is provided with a second fastening nut above.

[0010] Preferably, the upper bracket is internally provided with a first inner hole, and the hydraulic shaft slides in the first inner hole.

[0011] Preferably, the support frame is internally provided with a second inner hole.

[0012] Preferably, the second bolt is welded with a first fixed nut at the bottom end.

[0013] Preferably, the third bolt is welded between the two groups of steel plates.

[0014] The hydraulic jack pin removal device has the advantages that:

[0015] The hydraulic jack pin removal device has the advantages that: BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The hydraulic jack pin removal device has the advantages that:

[0017] Figure 2 The hydraulic jack pin removal device has the advantages that:

[0018] Figure 3The diagram shown is an exploded view of the disassembly structure of the hydraulic jack disassembly device of this utility model.

[0019] Figure 4 The image shown is a three-dimensional bottom view of the hydraulic jack pin removal device of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Fixed surface; 2. Guide stroke screw; 3. First fastening nut; 4. Frustum-shaped contact block; 5. Hydraulic jack body; 6. Hydraulic shaft; 7. Connection port; 8. Upper bracket; 9. Sliding hole; 10. First bolt; 11. Washer; 12. Second fastening nut; 13. First inner hole; 14. Support frame; 15. Second inner hole; 16. Steel plate; 17. Second bolt; 18. Third fastening nut; 19. First fixing nut; 20. Second fixing nut; 21. Third bolt. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please see Figures 1-4This utility model provides an embodiment of a hydraulic jack pin removal device, including a fixed surface 1, a pin installed inside the fixed surface 1, one end of the pin being fixedly connected to one end of a guide stroke screw 2, and a first fastening nut 3 connected to the end of the guide stroke screw 2 away from the pin. A frustum-shaped abutment block 4 is provided on one side of the first fastening nut 3, a hydraulic jack body 5 is provided below the frustum-shaped abutment block 4, a hydraulic shaft 6 is slidably connected to the top of the hydraulic jack body 5, and a... The upper bracket 8 has a sliding hole 9 inside, and a first bolt 10 is slidably connected inside the sliding hole 9. There are four sets of first bolts 10, which are linearly distributed on the upper bracket 8. A support frame 14 is provided below the hydraulic jack body 5. The extension of the support frame 14 consists of two steel plates 16, which are arranged in groups of two. The four groups of steel plates 16 are linearly distributed on the outside of the support frame 14. A second bolt 17 is provided between the two steel plates 16. The outer wall of the second bolt 17 slides... The moving connection is provided with a third fastening nut 18. A second fixing nut 20 is welded to the bottom end of the first bolt 10 and is welded to the side of the steel plate 16. The guide stroke screw 2 is an M36X850MM high-strength bolt. The guide stroke screw 2 is used to install the pin, so that the guide stroke screw 2 can pull the pin. The hydraulic jack body 5 drives the hydraulic shaft 6 to push the frustum-shaped abutment block 4 to move. The frustum-shaped abutment block 4 is used to push the guide stroke screw connected to the first bolt 10. The rod 2 moves, the first bolt 10 is an M24X300MM bolt, the sliding hole 9 allows the hydraulic shaft 6 to move inside it, the upper bracket 8 is a 280X10MM round plate, the steel plate 16 is a 160MMX90MMX16MM plate, the support frame 14 cooperates with the upper bracket 8 to fix the hydraulic jack body 5, the second bolt 17 is fixedly connected to the first fixing nut 19 so that it can abut against the surface of the fixing surface 1, which provides the necessary conditions for the hydraulic jack body 5 to push out the pin.

[0023] Please see Figures 1-2 In this embodiment, the hydraulic jack body 5 has a connection port 7 on its exterior, which is used to inject hydraulic oil.

[0024] Please see Figure 3In this embodiment, a washer 11 is provided on the outside of the first bolt 10, and a second fastening nut 12 is provided above the washer 11; a first inner hole 13 is opened inside the upper bracket 8, and the hydraulic shaft 6 slides in the first inner hole 13; a second inner hole 15 is opened inside the support frame 14; a first fixing nut 19 is welded to the bottom end of the second bolt 17; a third bolt 21 is welded between the two sets of steel plates 16, the washer 11 plays a fastening role to prevent the second fastening nut 12 from slipping when connected to the first bolt 10, the first fixing nut 19 is used to abut against the fixing surface 1, the third bolt 21 is an M30X55MM bolt, the third bolt 21 plays a role in fixing and connecting the two steel plates 16, thereby improving the compressive strength of the support frame 14.

[0025] During operation, the hydraulic jack body 5 is fixedly installed between the upper bracket 8 and the support frame 14. By rotating the first fastening nut 3 and two sets of third fastening nuts 18, the hydraulic jack body 5 is fixed on the tooling. At the same time, the four sets of first fixing nuts 19 connected by the four sets of second bolts 17 are pressed against the fixed surface 1. Then, the hydraulic jack body 5 is operated so that the hydraulic shaft 6 of the hydraulic jack body 5 pushes the frustum-shaped contact block 4. After being subjected to force, the frustum-shaped contact block 4 pushes the first fastening nut 3 to move outward. Since the first fastening nut 3 is connected to the end of the guide stroke screw 2, the first fastening nut 3 drives the guide stroke screw 2 to move outward. When the guide stroke screw 2 moves outward, it can drive the pin shaft to move outward, thereby pulling the pin shaft out of the fixed surface 1, thus reducing the manual burden and improving production efficiency.

[0026] Through the above steps, by operating the hydraulic jack body 5, the guide stroke screw 2 can be pulled out of the pin, thus eliminating the need for manual pulling, reducing the burden of manpower, and improving work efficiency, thereby solving the problem that the existing technology is not convenient for disassembling the pin.

Claims

1. Hydraulic jack pin removing device, comprising a fixed surface (1), characterized in that: The inside of the fixed surface (1) is provided with a pin shaft, one end of the pin shaft is fixedly connected to one end of the guide stroke screw rod (2), the end of the guide stroke screw rod (2) away from the pin shaft is connected with a first fastening nut (3), one side of the first fastening nut (3) is provided with a circular truncated cone abutting block (4), the lower part of the circular truncated cone abutting block (4) is provided with a hydraulic jack body (5), the top of the hydraulic jack body (5) is slidably connected with a hydraulic shaft (6), the outside of the hydraulic shaft (6) is provided with an upper bracket (8), the inside of the upper bracket (8) is provided with a sliding hole (9), the inside of the sliding hole (9) is slidably connected with a first bolt (10), there are four groups of the first bolt (10), the four groups of the first bolt (10) are linearly distributed on the upper bracket (8), the lower part of the hydraulic jack body (5) is provided with a support frame (14), the extension part of the support frame (14) is two steel plates (16), the two steel plates (16) form a group, four groups of the steel plates (16) are linearly distributed on the outside of the support frame (14), the second bolt (17) is arranged between the two steel plates (16), the outer wall of the second bolt (17) is slidably connected with a third fastening nut (18), the bottom end of the first bolt (10) is welded with a second fixed nut (20), the second fixed nut (20) is welded to the side face of the steel plate (16).

2. The hydraulic jack unpinning device of claim 1, wherein: The outside of the hydraulic jack body (5) is provided with a connecting port (7).

3. The hydraulic jack unpinning device of claim 1, wherein: The outside of the first bolt (10) is provided with a gasket (11), the upper part of the gasket (11) is provided with a second fastening nut (12).

4. The hydraulic jack unpinning device of claim 1, wherein: The inside of the upper bracket (8) is provided with a first inner hole (13), the hydraulic shaft (6) slides in the first inner hole (13).

5. The hydraulic jack unpinning device of claim 1, wherein: The inside of the support frame (14) is provided with a second inner hole (15).

6. The hydraulic jack unpinning device of claim 1, wherein: The bottom end of the second bolt (17) is welded with a first fixed nut (19).

7. The hydraulic jack unpinning device of claim 1, wherein: The third bolt (21) is welded between the two groups of the steel plates (16).

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