Dismounting device for inner sleeve of single hydraulic prop

Abstract

The utility model discloses a single hydraulic prop inner sleeve dismounting device which comprises a machine frame, a driving mechanism, a sleeve dismounting cutter and an oil cylinder clamping mechanism, the machine frame is arranged on the ground, the driving mechanism is arranged on the machine frame, the driving mechanism is used for driving the sleeve dismounting cutter to break and dismount a single hydraulic prop inner sleeve, and the oil cylinder clamping mechanism is arranged on the machine frame. A sharp portion is arranged at the front end of the sleeve detaching cutter and used for breaking an inner sleeve when the sleeve detaching cutter feeds, a plurality of barb portions are arranged on the two sides of the front end of the sleeve detaching cutter and used for pulling out the inner sleeve when the sleeve detaching cutter retracts, and the oil cylinder clamping mechanism is arranged on the rack. And the oil cylinder clamping mechanism is used for fixing the hydraulic prop oil cylinder.

Description

Technical Field

[0001] The utility model relates to the field of pipe fitting production, in particular to a single hydraulic support inner sleeve disassembly device. Background Art

[0002] Single hydraulic prop is a kind of support tool widely used in high-grade general mining working face in coal mine. During use, the service life of single hydraulic prop is shortened due to corrosion, wear, bump and other reasons, and the repair rate is high. Now the industry generally adopts stainless steel sleeve technology to repair hydraulic single prop. Before the hydraulic single prop is sleeved, the old sleeve must be removed first, and then the new stainless steel sleeve is inserted. Now it is disassembled manually, which is labor-consuming and time-consuming. Utility Model Content

[0003] In order to overcome the above-mentioned deficiencies in the prior art, the utility model provides a single-body hydraulic support inner sleeve disassembly device.

[0004] The technical scheme adopted by the utility model is: a single hydraulic support inner sleeve disassembly device, including a frame, a driving mechanism, a sleeve disassembly knife, and a cylinder clamping mechanism, the frame is arranged on the ground, the driving mechanism is arranged on the frame, the driving mechanism is used to drive the sleeve disassembly knife to break and disassemble the single hydraulic support inner sleeve, the front end of the sleeve disassembly knife is provided with a sharp portion, the sharp portion is used to break the inner sleeve when the sleeve disassembly knife advances, a plurality of barbs are arranged on both sides of the front end of the sleeve disassembly knife, the barbs are used to pull out the inner sleeve when the sleeve disassembly knife retreats, the cylinder clamping mechanism is arranged on the frame, and the cylinder clamping mechanism is used to fix the hydraulic support cylinder.

[0005] Furthermore, the driving mechanism includes a large pulley, a small pulley, a motor, and a screw. The motor drives the small pulley, and the small pulley drives the large pulley through a belt transmission. The large pulley is provided with an internal thread that cooperates with the screw. The screw passes through the large pulley and is connected to the sleeve removal tool. The large pulley is rotatably arranged on the frame through a connecting frame. A sliding bar is arranged at the lower part of the screw, and a first guide groove that cooperates with the sliding bar is arranged on the frame below the screw.

[0006] Furthermore, the screw is a trapezoidal thread screw.

[0007] Furthermore, the belt used for transmission between the large pulley and the small pulley is a V-belt.

[0008] Furthermore, the cylinder clamping mechanism includes a cylinder placement groove, a mounting frame, a clamping block, and a clamping screw. The cylinder placement groove is fixed on the frame, and the cylinder placement groove is set to be an arc-shaped groove that matches the outer periphery of the cylinder. A limiting block is fixed to the tail of the cylinder placement groove. The mounting frame is set above the cylinder placement groove, and a screw hole that matches the clamping screw is set on the mounting frame. The clamping screw passes through the screw hole. The end of the clamping screw close to the cylinder placement groove is rotatably connected to the clamping block, and the contact surface between the clamping block and the cylinder is set to be an arc surface. The other end of the clamping screw is connected to a crank handle.

[0009] Furthermore, two mounting frames are provided.

[0010] Furthermore, the mounting frame is symmetrically provided with second guide grooves, and sliding blocks cooperating with the second guide grooves are provided on both sides of the pressing block.

[0011] The utility model provides a driving mechanism and a sleeve removing knife, which cooperate to enable the sleeve removing knife to break and remove the stainless steel inner sleeve that needs to be replaced. When the knife is advanced, the sleeve removing knife presses against the wall of the stainless steel inner sleeve, and the wall of the stainless steel inner sleeve is broken under the drive of the driving mechanism, and the knife moves forward to the end of the inner sleeve. Then, the knife is retracted and the damaged inner sleeve is pulled out by using the barb portion provided on the sleeve removing knife.

[0012] The utility model has the advantages of simple structure, convenient use, reduced labor intensity of workers and improved disassembly efficiency of the inner sleeve of the hydraulic support. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model.

[0014] Figure 2 for Figure 1 Enlarged schematic diagram of circle A.

[0015] Figure 3 This is a schematic diagram of the structure of the oil cylinder clamping mechanism of the utility model.

[0016] Figure 4 This is a schematic diagram of the utility model for removing the knife sleeve structure.

[0017] Figure 5 It is a partial structural schematic diagram of the driving mechanism of the utility model.

[0018] In the figure: 1. frame, 21. large pulley, 22. small pulley, 23. motor, 24. screw, 25. slide bar, 26. first guide groove, 27. connecting frame, 3. removal knife, 31. sharp part, 32. barb part, 41. oil cylinder placement groove, 42. mounting frame, 43. clamping block, 44. clamping screw, 45. limit block, 46. slide block, 47. second guide groove. DETAILED DESCRIPTION

[0019] In order to more clearly understand the technical solution of the present invention, the present invention is further described below in conjunction with the accompanying drawings.

[0020] like Figure 1-Figure 5 As shown, a single hydraulic support inner sleeve disassembly device includes a frame 1, a driving mechanism, a sleeve disassembly knife 3, and a cylinder clamping mechanism. The frame 1 is set on the ground, and the driving mechanism is set on the frame 1. The driving mechanism is used to drive the sleeve disassembly knife 3 to disassemble the single hydraulic support inner sleeve. The front end of the sleeve disassembly knife 3 is provided with a sharp portion 31. The sharp portion 31 is used to break the inner sleeve when the sleeve disassembly knife 3 is inserted. When the knife is inserted, the tip of the sharp portion 31 is aligned with the connection between the stainless steel inner sleeve and the single hydraulic support cylinder, so that it is easier to break, because it is necessary to Replace the new stainless steel inner sleeve, so there is no need to worry about the inner wall of the oil cylinder being scratched by the sleeve removal knife 3. Multiple barbs 32 are arranged on both sides of the front end of the sleeve removal knife 3. The barbs 32 are used to pull out the inner sleeve when the sleeve removal knife 3 is retracted. When retracting the knife, since the sleeve removal knife 3 has completed the breaking of the stainless steel inner sleeve, the stainless steel inner sleeve will no longer be as tight as before the sleeve removal. When retracting the knife, the stainless steel inner sleeve can be easily pulled out due to the action of the barbs 32. The cylinder clamping mechanism is arranged on the frame 1, and the cylinder clamping mechanism is used to fix the hydraulic support cylinder.

[0021] refer to Figure 1 , Figure 2 and Figure 5 Specifically, the driving mechanism includes a large pulley 21, a small pulley 22, a motor 23, and a screw 24. The motor 23 drives the small pulley 22, and the small pulley 22 drives the large pulley 21 through belt transmission. The belt used for transmission between the large pulley 21 and the small pulley 22 is a V-belt. Compared with a flat belt, the V-belt has a larger transmission friction and can transmit a larger power. The large pulley 21 is provided with an internal thread that cooperates with the screw 24. The screw 24 passes through the large pulley 21 and is connected to the disassembly tool 3. The large pulley 21 is rotatably arranged on the frame 1 through a connecting frame 27. The screw 24 adopts a trapezoidal thread screw. Since the trapezoidal thread has a small spiral angle, the pitch is large, so that its bearing capacity is higher than other threads. A sliding bar 25 is provided at the lower part of the screw 24, and a first guide groove 26 that cooperates with the sliding bar 25 is provided on the frame 1 below the screw 24.

[0022] refer to Figure 1 and Figure 3Specifically, the cylinder clamping mechanism includes a cylinder placement groove 41, a mounting frame 42, a clamping block 43, and a clamping screw 44. The cylinder placement groove 41 is fixed on the frame 1, and the cylinder placement groove 41 is set to an arc groove that matches the outer periphery of the cylinder. A limiting block 45 is fixed to the tail of the cylinder placement groove 41. The mounting frame 42 is set above the cylinder placement groove 41. There are two mounting frames 42. A screw hole that matches the clamping screw 44 is set on the mounting frame 42. The clamping screw 44 passes through the screw hole. One end of the clamping screw 44 close to the cylinder placement groove 41 is rotatably connected with a clamping block 43. The contact surface of the clamping block 43 and the cylinder is set to an arc surface. The other end of the clamping screw 44 is connected to a crank handle. Two mounting frames 42 are set, and two corresponding clamping screws 44 are also set to ensure the clamping effect on the single hydraulic support cylinder.

[0023] Preferably, a second guide groove 47 is symmetrically provided on the mounting frame 42, and sliders 46 cooperating with the second guide groove 47 are provided on both sides of the clamping block 43. Since the clamping block 43 is provided with an arc-shaped surface and is rotatably connected to the clamping screw 44, it is sometimes necessary to manually adjust its rotation during use in order to better clamp the single hydraulic support cylinder. The guide groove and the slider 46 cooperating with the guide groove can limit the clamping block 43 from rotating, thereby avoiding manual adjustment.

[0024] Working principle: When removing the sleeve, first place the single hydraulic support cylinder that needs to be removed in the cylinder placement groove 41, the tail end of the cylinder is against the limit block 45, rotate the crank handle, the clamping screw 44 moves downward, driving the clamping block 43 to move downward, and tighten the cylinder, then start the motor 23, the small pulley 22 drives the large pulley 21 to rotate, because the middle part of the large pulley 21 is screwed with the wheel stem, and the sliding bar 25 and the first guide groove 26 are set, the rotation of the large pulley 21 will drive the screw 24 to move forward, the sleeve removal knife 3 moves forward to contact the stainless steel sleeve and continue to move forward to break the stainless steel sleeve, the sleeve removal knife 3 moves to the tail end of the stainless steel sleeve to complete the breaking of the stainless steel sleeve, and then the motor 23 is reversed, and the sleeve removal knife 3 is retracted. Since the sleeve removal knife 3 is provided with a barb portion 32, the sleeve removal knife 3 will bring the stainless steel sleeve out when it is retracted, and the sleeve removal is completed.

[0025] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A single hydraulic prop inner sleeve disassembly device, characterized in that: It includes a frame, a driving mechanism, a sleeve removing knife, and a cylinder clamping mechanism. The frame is set on the ground. The driving mechanism is used to drive the sleeve removing knife to remove the inner sleeve of the single hydraulic support. The front end of the sleeve removing knife is provided with a sharp portion, and the sharp portion is used to break the inner sleeve when the sleeve removing knife advances. Both sides of the front end of the sleeve removing knife are provided with a plurality of barbs, and the barbs are used to pull out the inner sleeve when the sleeve removing knife retracts. The cylinder clamping mechanism is set on the frame, and the cylinder clamping mechanism is used to fix the hydraulic support cylinder.

2. A single hydraulic prop inner sleeve disassembly device according to claim 1, characterized in that: The driving mechanism includes a large pulley, a small pulley, a motor, and a screw. The motor drives the small pulley, and the small pulley drives the large pulley through a belt transmission. The large pulley is provided with an internal thread that cooperates with the screw. The screw passes through the large pulley and is connected to the sleeve removal tool. The large pulley is rotatably arranged on the frame through a connecting frame. A sliding bar is arranged at the lower part of the screw, and a first guide groove that cooperates with the sliding bar is arranged on the frame below the screw.

3. A single hydraulic prop inner sleeve disassembly device according to claim 2, characterized in that: The screw rod adopts a trapezoidal thread screw rod.

4. A single hydraulic prop inner sleeve disassembly device according to claim 2, characterized in that: The belt used for transmission between the large pulley and the small pulley is a V-belt.

5. The device for removing the inner sleeve of a single hydraulic prop according to claim 1, characterized in that: The oil cylinder clamping mechanism includes an oil cylinder placement groove, a mounting frame, a clamping block, and a clamping screw. The oil cylinder placement groove is fixed on the frame, and the oil cylinder placement groove is set to be an arc groove that matches the outer periphery of the oil cylinder. A limiting block is fixed to the tail of the oil cylinder placement groove. The mounting frame is set above the oil cylinder placement groove, and a screw hole that matches the clamping screw is set on the mounting frame. The clamping screw passes through the screw hole. The end of the clamping screw close to the oil cylinder placement groove is rotatably connected to the clamping block, and the contact surface between the clamping block and the oil cylinder is set to be an arc surface. The other end of the clamping screw is connected to a crank handle.

6. A device for removing the inner sleeve of a single hydraulic prop according to claim 5, characterized in that: There are two mounting frames.

7. A device for removing the inner sleeve of a single hydraulic prop according to claim 5, characterized in that: The mounting frame is symmetrically provided with second guide grooves, and sliding blocks cooperating with the second guide grooves are provided on both sides of the pressing block.

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