An adjustable coal mine hydraulic support column disassembly and assembly device

Abstract

The present invention relates to the field of column disassembly and assembly, and specifically to an adjustable coal mine hydraulic support column disassembly and assembly device. It includes a disassembly and assembly machine body, which includes a screwing assembly and a positioning assembly, and also includes: an elastic clamping mechanism, which is fixedly connected to the output end of the positioning assembly, including two positioning jaws, a plurality of clamping rollers and two cams, the two positioning jaws are respectively arranged at the upper end of the positioning assembly, and the two output ends of the positioning assembly will make the two positioning jaws elastically press against the outside of the column body when moving toward the column body, and a plurality of clamping rollers are arranged in an array at equal intervals above each positioning jaw, and the two cams are respectively arranged above the plurality of clamping rollers on both sides; a disassembly and assembly mechanism, which is fixedly connected to the output end of the screwing assembly, includes a disassembly head, a three-jaw chuck and a disc rack, the disassembly head is fixedly connected to the output end of the screwing assembly, the disc rack is arranged below the disassembly head and against the disassembly head, the three-jaw chuck is fixedly connected to the lower end of the disc rack and can clamp the guide sleeve.

Description

Technical Field

[0001] The invention relates to the field of column disassembly and assembly, and in particular to an adjustable coal mine hydraulic support column disassembly and assembly device. Background Art

[0002] In the actual application of hydraulic supports, the columns, as the key bearing mechanism, play a vital role. When the columns are damaged, the operators must remove them from the hydraulic supports, then disassemble them carefully to repair the damaged parts, and finally reinstall them back to the hydraulic supports.

[0003] There are many thorny problems in the conventional horizontal disassembly method. First, the weight of the column itself will bring great difficulties to the disassembly and assembly of the guide sleeve. Because the column is heavy, it is difficult to operate accurately during the disassembly and installation process, which makes the disassembly and assembly of the guide sleeve extremely difficult. Secondly, different columns use different specifications of guide sleeves, so the traditional disassembly and assembly process requires operators to prepare different clamps. This not only increases the difficulty of maintenance, but may also lead to extended maintenance time and increased maintenance costs.

[0004] In addition, when disassembling and assembling the guide sleeve, the operator is also faced with the tedious process of installing the fixture. In order to successfully install the fixture, the operator needs to constantly stack the fixture and the guide sleeve back and forth. This operation method not only consumes a lot of time and energy, but also has a low degree of automation. The entire process of disassembling and assembling the column is tedious and laborious, and there are also safety hazards. Maintenance personnel may be injured due to improper operation, or become fatigued after long-term high-intensity work, which in turn affects the quality and efficiency of maintenance. In summary, how to solve these problems in the process of disassembly and assembly of the column, improve disassembly and assembly efficiency and safety, and reduce maintenance costs has become an important issue that needs to be urgently solved in the current field of hydraulic support maintenance. Summary of the invention

[0005] Based on this, it is necessary to provide an adjustable coal mine hydraulic support column disassembly and assembly device to address the existing technical problems.

[0006] In order to solve the problems of the prior art, the technical solution adopted by the present invention is:

[0007] An adjustable coal mine hydraulic support column disassembly and assembly device comprises a disassembly and assembly machine body, wherein the disassembly and assembly machine body comprises a screwing assembly and a positioning assembly, and further comprises:

[0008] The elastic clamping mechanism is fixedly connected to the output end of the positioning assembly, and includes two positioning jaws, a plurality of clamping rollers and two cams. The two positioning jaws are respectively arranged at the upper end of the positioning assembly. When the two output ends of the positioning assembly move toward the column body, the two positioning jaws will elastically press against the outside of the column body. A plurality of clamping rollers are arranged in an evenly spaced array above each positioning jaw, and the two cams are respectively arranged above the plurality of clamping rollers on both sides.

[0009] The disassembly and assembly mechanism is fixedly connected to the output end of the screwing assembly, and includes a disassembly and assembly head, a three-jaw chuck and a disc frame. The disassembly and assembly head is fixedly connected to the output end of the screwing assembly, the disc frame is arranged below the disassembly and assembly head and abuts against the disassembly and assembly head, and the three-jaw chuck is fixedly connected to the lower end of the disc frame and can clamp the guide sleeve.

[0010] Furthermore, the elastic clamping mechanism also includes two clamping cylinders and a number of positioning springs. The two clamping cylinders are respectively fixedly connected to the output ends of the positioning components. The two positioning jaws are respectively slidably connected to the output ends of the two clamping cylinders. Each clamping cylinder is provided with a number of positioning springs near the positioning jaws. One end of the positioning spring is fixedly connected to the output end of the clamping cylinder, and the other end is fixedly connected to the positioning jaws.

[0011] Furthermore, the elastic clamping mechanism also includes a clamping slide, a clamping wheel frame, a plurality of positioning sleeves and a plurality of clamping sleeves. The clamping slide is fixedly connected to the output end of the positioning assembly, the clamping wheel frame is arranged on the side of the clamping slide, the clamping wheel frame is rotatably connected to a plurality of clamping rollers, and a plurality of positioning sleeves are respectively arranged in an array at equal intervals along the clamping slide, one end of the positioning sleeve is fixedly connected to the clamping slide, the clamping sleeve is slidably connected to the other end of the positioning sleeve, and the clamping sleeve is fixedly connected to the clamping wheel frame.

[0012] Furthermore, the elastic clamping mechanism also includes a plurality of clamping wheels, a plurality of clamping screws, a plurality of clamping screw seats and a plurality of buffer springs. The plurality of clamping screw seats are keyed to a plurality of positioning sleeves, the plurality of clamping screws are respectively threadedly connected to the plurality of clamping screw seats, one end of the plurality of buffer springs is fixedly connected to the plurality of clamping screw seats, and the other end is fixedly connected to the corresponding clamping sleeves, the plurality of clamping wheels are respectively rotatably connected to the clamping slide seats, two adjacent clamping wheels are connected by belt drive, and the plurality of clamping wheels are coaxially fixedly connected to the plurality of clamping screws.

[0013] Furthermore, the elastic clamping mechanism also includes a clamping motor, a first bevel tooth and a second bevel tooth. The clamping motor is fixedly connected to the clamping slide seat, the first bevel tooth is coaxially fixedly connected to the output end of the clamping motor, the second bevel tooth is meshed with the first bevel tooth, and the second bevel tooth is coaxially fixedly connected to the clamping pulley close to the clamping motor.

[0014] Furthermore, the elastic clamping mechanism also includes a lifting pulley and a lifting seat, the lifting seat is fixedly connected to the upper end of the clamping slide, the lifting cam is coaxially rotatably connected to the lifting seat, the lifting pulley is connected to the uppermost clamping pulley through a belt drive, and the lifting pulley is coaxially fixed to the cam.

[0015] Furthermore, the disassembly and assembly mechanism also includes a positioning frame, a clamping spring and a clamping top plate. The positioning frame is fixedly connected to the fixed end of the screwing assembly, the clamping spring is arranged at the lower end of the disassembly and assembly head output end and is fixedly connected to the disassembly and assembly head, the clamping top plate is fixedly connected to the lower end of the clamping spring, and the disk frame is rotatably connected to the lower end of the clamping top plate.

[0016] Furthermore, the disassembly and assembly mechanism also includes two tightening rods and two tightening sleeve rods, the two tightening sleeve rods are symmetrically arranged on one side of the disassembly head close to the tightening top plate, the two tightening sleeve rods are respectively fixedly connected to the disassembly head, and the two tightening rods are respectively key-connected with the two tightening sleeve rods and fixedly connected to the tightening top plate.

[0017] Furthermore, the disassembly and assembly mechanism also includes a center gear, a connecting gear, a reduction gear, a first gear ring and a second gear ring. The center gear is arranged at the upper end of the top plate and is fixedly connected to the plate frame coaxially. The reduction gear is rotatably connected to the positioning frame. The connecting gear is arranged on the side of the reduction gear close to the disassembly and assembly head and is fixedly connected to the reduction gear coaxially. The connecting gear is meshed with the center gear. The first gear ring is rotatably connected to the positioning frame and is rotatably connected to the center gear coaxially. The first gear ring is meshed with the reduction gear. The second gear ring is coaxially fixed to the lower end of the first gear ring.

[0018] Furthermore, the disassembly and assembly mechanism also includes a reduction rack, a return spring and a limit baffle. The reduction rack is slidably connected to the positioning frame, the limit baffle is fixedly connected to the end of the reduction rack, one end of the return spring is fixedly connected to the positioning frame, and the other end is fixedly connected to the limit baffle, and the reduction rack is meshed with the second gear ring.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] First, the device uses the positioning claws and the clamping rollers to perform secondary positioning on the column body that needs to be disassembled and assembled. Both positionings are adjustable positioning clamping from non-rigid to rigid, ensuring that when facing column bodies of different specifications, compared with traditional positioning fixtures, this device can apply more comprehensive positioning clamping force to the column body to prevent the column body from moving during the disassembly and assembly process;

[0021] Second, this device uses a three-jaw chuck to replace the traditional mold plate. When facing guide sleeves of different specifications, the operator only needs to preset the three-jaw chuck. When the three-jaw chuck contacts the guide sleeve, it can drive the guide sleeve to rotate. Compared with the traditional disassembly and assembly equipment, when installing the mold plate, the operator needs to knock the mold plate to make the mold plate and the guide sleeve fit completely. This device uses a cam to realize the reciprocating movement of the three-jaw chuck to avoid the three-jaw chuck being unable to contact the guide sleeve.

[0022] Third: This device uses a gear and a rack to ensure that after the three-jaw chuck is tightened or loosened on the guide sleeve, the three-jaw chuck can be separated from the guide sleeve and restored to its initial state, avoiding the need for the operator to manually restore the three-jaw chuck before each disassembly and assembly after the guide sleeve is pre-placed on the column body. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the three-dimensional structure of an embodiment;

[0024] Figure 2 is a front view of an embodiment;

[0025] Figure 3 is a three-dimensional structural schematic diagram of the embodiment from another angle;

[0026] Figure 4 yes Figure 3 A magnified view of the structure at center;

[0027] Figure 5 yes Figure 3 A magnified view of the structure at B in the middle;

[0028] Figure 6 is a schematic diagram of the three-dimensional structure of the elastic clamping mechanism in the embodiment;

[0029] Figure 7 yes Figure 6 A magnified view of the structure at C in the middle;

[0030] Figure 8 yes Figure 6 A magnified view of the structure at D in the middle;

[0031] Fig. 9 3. It is a schematic diagram of the three-dimensional structure of the disassembly and assembly mechanism in the embodiment;

[0032] Fig.10 It is a schematic diagram of the three-dimensional structure decomposition of the disassembly and assembly mechanism in the embodiment.

[0033] The numbers in the figure are:

[0034] 1. Disassembler body; 2. Screw assembly; 3. Positioning assembly; 4. Column body; 5. Guide sleeve; 6. Elastic clamping mechanism; 7. Clamping cylinder; 8. Positioning spring; 9. Positioning jaws; 10. Clamping motor; 11. First bevel gear; 12. Second bevel gear; 13. Clamping slide; 14. Clamping roller; 15. Clamping wheel frame; 16. Positioning sleeve; 17. Clamping sleeve; 18. Clamping belt wheel; 19. Clamping screw; 20. Clamping screw seat; 21. Buffer Spring; 22. Lifting pulley; 23. Lifting seat; 24. Cam; 25. Disassembly and assembly mechanism; 26. Disassembly and assembly head; 27. Positioning frame; 28. Three-jaw chuck; 29. ​​Disc rack; 30. Tightening spring; 32. Tightening plug rod; 33. Tightening sleeve rod; 34. Tightening top disc; 35. Center gear; 36. Connecting gear; 37. Reduction gear; 38. First gear ring; 39. Second gear ring; 40. Reduction rack; 41. Reset spring; 42. Limit baffle. DETAILED DESCRIPTION

[0035] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0036] refer to Figures 1 to 10 , an adjustable coal mine hydraulic support column disassembly and assembly device, including a disassembly and assembly machine body 1, the disassembly and assembly machine body 1 includes a screwing assembly 2 and a positioning assembly 3, and also includes;

[0037] The elastic clamping mechanism 6 is fixedly connected to the output end of the positioning assembly 3, and includes two positioning jaws 9, a plurality of clamping rollers 14 and two cams 24. The two positioning jaws 9 are respectively arranged at the upper end of the positioning assembly 3. When the two output ends of the positioning assembly 3 move toward the column body 4, the two positioning jaws 9 will elastically press against the outside of the column body 4. A plurality of clamping rollers 14 (combined with the cams 24) are arranged in an evenly spaced array above each positioning jaw 9. Figure 6 and Figure 7 ), two cams 24 are respectively arranged above a plurality of pairs of clamping rollers 14 on both sides;

[0038] The disassembly and assembly mechanism 25 is fixedly connected to the output end of the screw assembly 2, and includes a disassembly head 26, a three-jaw chuck 28 and a disc rack 29. The disassembly head 26 is fixedly connected to the output end of the screw assembly 2, the disc rack 29 is arranged below the disassembly head 26 and abuts against the disassembly head 26, and the three-jaw chuck 28 is fixedly connected to the lower end of the disc rack 29 and can clamp the guide sleeve 5.

[0039] When the device is in operation, after the column body 4 is placed on the positioning assembly 3 by the operator, the two positioning jaws 9 will first non-rigidly clamp the outer cylinder of the column body 4, at which time the column body 4 will be initially positioned, and when the two positioning jaws 9 move toward the direction of the column body 4, the positioning jaws 9 will rigidly position the outer cylinder of the column body 4 to prevent the column body 4 from moving during the subsequent disassembly and assembly process.

[0040] When installing or disassembling the guide sleeve 5 of the column body 4, as the screwing assembly 2 drives the disassembly head 26 to approach the guide sleeve 5, when the disassembly head 26 operates on the guide sleeve 5, several pairs of clamping rollers 14 need to perform secondary positioning on the column body 4 to prevent the upper and lower parts of the column body 4 from being subjected to uneven force due to local positioning during the disassembly and assembly of the guide sleeve 5. However, when several pairs of clamping rollers 14 press against the column body 4, the two cams 24 are started to push the three-jaw chuck 28 to reciprocate in the vertical direction through the disc frame 29, ensuring that the three-jaw chuck 28 can better fit with the guide sleeve 5 during the reciprocating movement, thereby avoiding problems such as deviation and shaking of the guide sleeve 5 during the disassembly and assembly process due to inaccurate positioning.

[0041] In order to realize the driving of the positioning clamp 9, the following features are also specifically provided:

[0042] The elastic clamping mechanism 6 also includes two clamping cylinders 7 and a plurality of positioning springs 8. The two clamping cylinders 7 are respectively fixedly connected to the output ends of the positioning assembly 3, and the two positioning clamping claws 9 are respectively slidably connected to the output ends of the two clamping cylinders 7 (refer to Figure 6 ), each clamping cylinder 7 is provided with a plurality of positioning springs 8 in the direction close to the positioning jaws 9, one end of the positioning spring 8 is fixedly connected to the output end of the clamping cylinder 7, and the other end is fixedly connected to the positioning jaws 9. When the column body 4 is positioned for the first time, the clamping cylinder 7 is started and pushes the positioning jaws 9 close to the column body 4. During this process, when the positioning jaws 9 are against the column body 4, the positioning springs 8 will be compressed first until they are compressed to the limit. This process is a change from non-rigid contact to rigid contact, which avoids the outer side of the column body 4 being damaged due to the rigid contact between the column body 4 and the positioning jaws 9.

[0043] In order to supplement the specific structure of the elastic clamping mechanism 6, the following features are also specifically provided:

[0044] The elastic clamping mechanism 6 also includes a clamping slide 13, a clamping wheel frame 15, a plurality of positioning sleeves 16 and a plurality of clamping sleeves 17. The clamping slide 13 is fixedly connected to the output end of the positioning assembly 3, and the clamping wheel frame 15 is arranged on the side of the clamping slide 13 (refer to Figure 7), the clamping wheel frame 15 is rotatably connected to the plurality of clamping rollers 14, and the plurality of positioning sleeves 16 are arranged in an array at equal intervals along the clamping slide 13, one end of the positioning sleeve 16 is fixedly connected to the clamping slide 13, and the clamping sleeve 17 is slidably connected to the other end of the positioning sleeve 16, and the clamping sleeve 17 is fixedly connected to the clamping wheel frame 15. When the clamping roller 14 contacts the column body 4, the clamping roller 14 will drive the plurality of clamping sleeves 17 to move through the clamping wheel frame 15, and the plurality of clamping sleeves 17 will move along the plurality of positioning sleeves 16, thereby realizing adaptive adjustment of the clamping process.

[0045] In order to realize the elastic adjustment function between the clamping sleeve 17 and the positioning sleeve 16, the following features are also specifically provided:

[0046] The elastic clamping mechanism 6 also includes a plurality of clamping wheels 18, a plurality of clamping screws 19, a plurality of clamping screw seats 20 and a plurality of buffer springs 21. The plurality of clamping screw seats 20 are key-connected with the plurality of positioning sleeves 16, the plurality of clamping screws 19 are respectively threadedly connected with the plurality of clamping screw seats 20, one end of the plurality of buffer springs 21 is fixedly connected with the plurality of clamping screw seats 20, and the other end is fixedly connected with the corresponding clamping sleeves 17, the plurality of clamping wheels 18 are respectively rotatably connected with the clamping slide 13, two adjacent clamping wheels 18 are connected by belt drive, and the plurality of clamping wheels 18 are coaxially fixedly connected with the plurality of clamping screws 19. When several pairs of clamping wheels 18 rotate (the specific rotation process is explained later), the clamping wheels 18 will drive the clamping screw seat 20 to move through the clamping screw 19. When the clamping screw seat 20 moves, it will push the corresponding buffer spring 21 to be compressed, thereby ensuring that when the clamping roller 14 contacts with the column body 4 of different specifications, the buffer spring 21 with greater elasticity after compression can initially position the column body 4 with a larger dead weight (it should be noted that the buffer spring 21 cannot be compressed to the extreme position to prevent the buffer spring 21 from losing its non-rigid buffering ability), preventing the column body 4 from moving when the clamping roller 14 contacts with the column body 4.

[0047] In order to drive the pairs of entrainment wheels 18 to rotate, the following features are also specifically provided:

[0048] The elastic clamping mechanism 6 also includes a clamping motor 10, a first bevel gear 11 and a second bevel gear 12. The clamping motor 10 is fixedly connected to the clamping slide 13, and the first bevel gear 11 is coaxially fixedly connected to the output end of the clamping motor 10 (refer to Figure 5 ), the second bevel teeth 12 mesh with the first bevel teeth 11, and the second bevel teeth 12 are coaxially fixedly connected to the clamping belt wheel 18 close to the clamping motor 10. After the clamping motor 10 is started, the clamping motor 10 will drive the second bevel teeth 12 to rotate through the first bevel teeth 11, and the second bevel teeth 12 will drive the clamping belt wheel 18 fixed thereto to rotate, and the plurality of pairs of clamping belt wheels 18 are synchronously driven by belts.

[0049] In order to further supplement the specific structure of the elastic clamping mechanism 6, the following features are also specifically provided:

[0050] The elastic clamping mechanism 6 also includes a lifting pulley 22 and a lifting seat 23, the lifting seat 23 is fixedly connected to the upper end of the clamping slide 13, the lifting cam 24 is coaxially connected to the lifting seat 23, and the lifting pulley 22 is connected to the uppermost clamping pulley 18 through a belt drive (refer to Figure 7 ), the lifting pulley 22 is coaxially fixedly connected with the cam 24. After the entraining wheel 18 rotates, the entraining wheel 18 will drive the cam 24 to rotate through the lifting pulley 22, and the rotation of the cam 24 will drive the disc frame 29 against it to move in the vertical direction, ensuring that the three-jaw chuck 28 and the guide sleeve 5 can be completely fitted.

[0051] In order to realize the automatic adjustment function of the rack 29, the following features are also specifically provided:

[0052] The disassembly mechanism 25 further includes a positioning frame 27, a holding spring 30 and a holding top plate 34. The positioning frame 27 is fixedly connected to the fixed end of the screw assembly 2. The holding spring 30 is arranged at the lower end of the output end of the disassembly head 26 and is fixedly connected to the disassembly head 26. The holding top plate 34 is fixedly connected to the lower end of the holding spring 30. The disc frame 29 is rotatably connected to the lower end of the holding top plate 34. When the disassembly head 26 rotates, the disassembly head 26 drives the disc frame 29 to rotate. When the three-jaw chuck 28 abuts against the guide sleeve 5, the holding spring 30 is compressed to ensure that the three-jaw chuck 28 and the guide sleeve 5 are first elastically contacted, and then the disc frame 29 reciprocates in the vertical direction under the action of the cam 24.

[0053] In order to achieve relative sliding between the top plate 34 and the disassembly head 26, the following features are also specifically provided:

[0054] The disassembly mechanism 25 also includes two abutting rods 32 and two abutting sleeve rods 33. The two abutting sleeve rods 33 are symmetrically arranged on one side of the disassembly head 26 close to the abutting top plate 34. The two abutting sleeve rods 33 are respectively fixedly connected to the disassembly head 26, and the two abutting rods 32 are respectively key-connected with the two abutting sleeve rods 33 and are fixedly connected to the abutting top plate 34. When the disassembly head 26 drives the disc frame 29 to rotate, in order to prevent the abutting top plate 34 from rotating and causing the abutting spring 30 to twist, thereby causing the abutting spring 30 to fail to act normally on the abutting top plate 34, when the disassembly head 26 rotates, the disassembly head 26 drives the disc frame 29 to rotate through the abutting sleeve rods 33 and the abutting rods 32, and when the abutting spring 30 is compressed, the abutting sleeve rods 33 and the abutting rods 32 slide relative to each other.

[0055] In order to supplement the specific structure of the disassembly and assembly mechanism 25, the following features are also specifically provided:

[0056] The disassembly and assembly mechanism 25 further includes a central gear 35, a connecting gear 36, a reduction gear 37, a first gear ring 38 and a second gear ring 39. The central gear 35 is arranged on the upper end of the top plate 34 and is coaxially fixedly connected to the plate frame 29. The reduction gear 37 is rotatably connected to the positioning frame 27 (refer to Fig.10 ), the connecting gear 36 is arranged on the side of the reduction gear 37 close to the disassembling head 26 and is coaxially fixedly connected with the reduction gear 37, the connecting gear 36 is meshed with the central gear 35, the first gear ring 38 is rotatably connected with the positioning frame 27 and is coaxially rotatably connected with the central gear 35, the first gear ring 38 is meshed with the reduction gear 37, and the second gear ring 39 is coaxially fixedly connected with the lower end of the first gear ring 38. When the disassembling head 26 rotates, the disassembling head 26 will rotate the connecting gear 36 through the central gear 35, the connecting gear 36 drives the reduction gear 37 fixedly connected thereto to rotate, and the reduction gear 37 drives the second gear ring 39 to rotate through the first gear ring 38.

[0057] In order to realize that the disk rack 29 can reset itself after rotation, the following features are also specifically provided:

[0058] The disassembly and assembly mechanism 25 further includes a reduction rack 40, a return spring 41 and a limit baffle 42. The reduction rack 40 is slidably connected to the positioning frame 27, the limit baffle 42 is fixedly connected to the end of the reduction rack 40, one end of the return spring 41 is fixedly connected to the positioning frame 27, and the other end is fixedly connected to the limit baffle 42. The reduction rack 40 is meshed with the second gear ring 39. When the second gear ring 39 rotates (refer to Fig.10 ), the second gear ring 39 will drive the reduction rack 40 to move, and when the reduction rack 40 moves, it will drive the return spring 41 to be compressed, so that the subsequent return spring 41 can drive the disk rack 29 to return to the initial state.

[0059] The working principle of this device is that when the device is in operation, after the column body 4 is placed on the positioning assembly 3 by the operator, the two clamping cylinders 7 are started to drive the two positioning claws 9 to move, and the two positioning claws 9 will first non-rigidly clamp the outer cylinder of the column body 4 under the action of the positioning spring 8. At this time, the column body 4 will be initially positioned. When the two positioning claws 9 move toward the direction of the column body 4 again, the positioning claws 9 will rigidly position the outer cylinder of the column body 4 to prevent the column body 4 from moving during the subsequent disassembly and assembly process.

[0060] When installing or disassembling the guide sleeve 5 of the column body 4, as the screwing assembly 2 drives the disassembly head 26 to approach the guide sleeve 5, the disassembly head 26 needs to perform secondary positioning on the column body 4 when operating on the guide sleeve 5 to prevent the column body 4 from being subjected to uneven force on the upper and lower parts of the column body 4 due to local positioning during the disassembly and assembly of the guide sleeve 5. However, since the clamping slide 13 has been fixed in position when the clamping cylinder 7 is started, in order to ensure that the several clamping rollers 14 are pressed against the column body 4, the clamping motor 10 will drive the several clamping wheels 18 to rotate after starting, ensuring that the several buffer springs 21 are compressed to the limit position. During the compression of the several buffer springs 21, the two cams 24 will push the three-jaw chuck 28 to reciprocate in the vertical direction, ensuring that the three-jaw chuck 28 can better fit with the guide sleeve 5 during the reciprocating movement, avoiding the problems of deviation and shaking of the guide sleeve 5 during the disassembly and assembly process due to inaccurate position.

[0061] When the disc frame 29 drives the three-jaw chuck 28 to rotate, the three-jaw chuck 28 will drive the guide sleeve 5 to rotate, ensuring the disassembly and assembly of the guide sleeve 5 and the column body 4. When the disassembly and assembly is completed, the three-jaw chuck 28 will return to its original position under the action of the reset spring, thereby ensuring that the three-jaw chuck 28 contacts the guide sleeve 5 at the same angle during the next disassembly and assembly.

[0062] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. An adjustable coal mine hydraulic support column disassembly and assembly device, comprising a disassembly and assembly machine body (1), the disassembly and assembly machine body (1) comprising a screwing assembly (2) and a positioning assembly (3), characterized in that: Also includes; An elastic clamping mechanism (6) is fixedly connected to the output end of the positioning component (3), comprising two positioning jaws (9), a plurality of clamping rollers (14) and two cams (24). The two positioning jaws (9) are respectively arranged at the upper end of the positioning component (3). When the two output ends of the positioning component (3) move toward the column body (4), the two positioning jaws (9) elastically press against the outside of the column body (4). A plurality of clamping rollers (14) are arranged in an evenly spaced array above each positioning jaw (9). The two cams (24) are respectively arranged above the plurality of clamping rollers (14) on both sides. The disassembly mechanism (25) is fixedly connected to the output end of the screw assembly (2), and comprises a disassembly head (26), a three-jaw chuck (28) and a disc rack (29). The disassembly head (26) is fixedly connected to the output end of the screw assembly (2). The disc rack (29) is arranged below the disassembly head (26) and abuts against the disassembly head (26). The three-jaw chuck (28) is fixedly connected to the lower end of the disc rack (29) and can clamp the guide sleeve (5). The elastic clamping mechanism (6) further comprises a clamping slide (13), a clamping wheel frame (15), a plurality of positioning sleeves (16) and a plurality of clamping sleeves (17); the clamping slide (13) is fixedly connected to the output end of the positioning assembly (3); the clamping wheel frame (15) is arranged beside the clamping slide (13); the clamping wheel frame (15) is rotatably connected to the plurality of clamping rollers (14); the plurality of positioning sleeves (16) are respectively arranged in an array at equal intervals along the clamping slide (13); one end of the positioning sleeve (16) is fixedly connected to the clamping slide (13); the clamping sleeve (17) is slidably connected to the other end of the positioning sleeve (16); and the clamping sleeve (17) is fixedly connected to the clamping wheel frame (15); The elastic clamping mechanism (6) further comprises a plurality of clamping wheels (18), a plurality of clamping screws (19), a plurality of clamping screw seats (20) and a plurality of buffer springs (21); the plurality of clamping screw seats (20) are key-connected to the plurality of positioning sleeves (16); the plurality of clamping screws (19) are respectively threadedly connected to the plurality of clamping screw seats (20); one end of the plurality of buffer springs (21) is fixedly connected to the plurality of clamping screw seats (20) and the other end is fixedly connected to the corresponding clamping sleeves (17); the plurality of clamping wheels (18) are respectively rotatably connected to the clamping slide seats (13); two adjacent clamping wheels (18) are connected via a belt drive; and the plurality of clamping wheels (18) are coaxially fixedly connected to the plurality of clamping screws (19); The elastic clamping mechanism (6) further comprises a clamping motor (10), a first bevel tooth (11) and a second bevel tooth (12); the clamping motor (10) is fixedly connected to the clamping slide seat (13); the first bevel tooth (11) is fixedly connected to the output end of the clamping motor (10) coaxially; the second bevel tooth (12) is meshed with the first bevel tooth (11); and the second bevel tooth (12) is fixedly connected coaxially to a clamping pulley (18) close to the clamping motor (10); The elastic clamping mechanism (6) further comprises a lifting pulley (22) and a lifting seat (23); the lifting seat (23) is fixedly connected to the upper end of the clamping slide seat (13); the lifting cam (24) is coaxially rotatably connected to the lifting seat (23); the lifting pulley (22) is connected to the uppermost clamping pulley (18) via a belt drive; and the lifting pulley (22) is coaxially fixedly connected to the cam (24).

2. The adjustable coal mine hydraulic support column disassembly and assembly device according to claim 1 is characterized in that: The elastic clamping mechanism (6) further comprises two clamping cylinders (7) and a plurality of positioning springs (8), wherein the two clamping cylinders (7) are respectively fixedly connected to the output ends of the positioning assembly (3), and the two positioning clamping claws (9) are respectively slidably connected to the output ends of the two clamping cylinders (7), and each clamping cylinder (7) is provided with a plurality of positioning springs (8) in a direction close to the positioning clamping claw (9), and one end of the positioning spring (8) is fixedly connected to the output end of the clamping cylinder (7), and the other end is fixedly connected to the positioning clamping claw (9).

3. The adjustable coal mine hydraulic support column disassembly and assembly device according to claim 1 is characterized in that: The disassembly and assembly mechanism (25) further comprises a positioning frame (27), a holding spring (30) and a holding top plate (34); the positioning frame (27) is fixedly connected to the fixed end of the screwing assembly (2); the holding spring (30) is arranged at the lower end of the output end of the disassembly and assembly head (26) and is fixedly connected to the disassembly and assembly head (26); the holding top plate (34) is fixedly connected to the lower end of the holding spring (30); and the plate frame (29) is rotatably connected to the lower end of the holding top plate (34).

4. The adjustable coal mine hydraulic support column disassembly and assembly device according to claim 3 is characterized in that: The disassembly mechanism (25) further comprises two abutting insertion rods (32) and two abutting sleeve rods (33), the two abutting sleeve rods (33) being symmetrically arranged on one side of the disassembly head (26) close to the abutting top plate (34), the two abutting sleeve rods (33) being respectively fixedly connected to the disassembly head (26), and the two abutting insertion rods (32) being respectively key-connected to the two abutting sleeve rods (33) and being fixedly connected to the abutting top plate (34).

5. The adjustable coal mine hydraulic support column disassembly and assembly device according to claim 3 is characterized in that: The disassembly and assembly mechanism (25) further comprises a central gear (35), a connecting gear (36), a reduction gear (37), a first gear ring (38) and a second gear ring (39). The central gear (35) is arranged at the upper end of the top plate (34) and is coaxially fixedly connected to the plate frame (29). The reduction gear (37) is rotatably connected to the positioning frame (27). The connecting gear (36) is arranged on a side of the reduction gear (37) close to the disassembly and assembly head (26) and is coaxially fixedly connected to the reduction gear (37). The connecting gear (36) is meshed with the central gear (35). The first gear ring (38) is rotatably connected to the positioning frame (27) and is coaxially rotatably connected to the central gear (35). The first gear ring (38) is meshed with the reduction gear (37). The second gear ring (39) is coaxially fixedly connected to the lower end of the first gear ring (38).

6. The adjustable coal mine hydraulic support column disassembly and assembly device according to claim 5 is characterized in that: The disassembly and assembly mechanism (25) further comprises a reduction rack (40), a return spring (41) and a limit baffle (42); the reduction rack (40) is slidably connected to the positioning frame (27); the limit baffle (42) is fixedly connected to the end of the reduction rack (40); one end of the return spring (41) is fixedly connected to the positioning frame (27) and the other end is fixedly connected to the limit baffle (42); and the reduction rack (40) is meshed with the second gear ring (39).

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