A shearer drum pick holder welding positioning device

Abstract

The present application relates to a coal cutter pick seat welding equipment technical field, specifically to a kind of coal cutter drum pick seat welding positioning device, including support frame, which is equipped with centering assembly and adjusting assembly;Adjusting assembly includes adjusting ring, multistage adjusting module and clamping assembly, clamping assembly includes limiting piece, axial positioning assembly and circumferential positioning assembly.Limiting piece is carried out inner centering clamping to pick seat cylinder portion by limiting column;Axial positioning assembly utilizes positioning plate to limit pick seat axial position;Circumferential positioning assembly is limited to the circumferential angle of pick seat connecting portion by double clamping plate structure.The device also integrates induction assembly and cooling assembly, induction assembly is used to detect the slope of drum surface and feedback to adjust pick seat posture, and cooling assembly is used for cooling protection when welding.

Description

Technical Field

[0001] This invention relates to the technical field of welding equipment for coal mining machine cutting tooth seats, and specifically to a welding positioning device for coal mining machine drum cutting tooth seats. Background Technology

[0002] The coal mining machine is the core equipment in a fully mechanized coal mining face, and the drum is a key component for coal cutting and loading. The cutting tooth holder, as the base for mounting the cutting teeth, is typically welded to the drum body in a specific helical arrangement and at a specific angle. The accuracy of the welding position and angle of the cutting tooth holder directly affects the stress state of the cutting teeth, cutting efficiency, and the service life of the drum. If the angle deviation of the cutting tooth holder is too large, it will lead to uneven stress on the cutting teeth, accelerated wear, and even breakage, seriously affecting the performance of the coal mining machine.

[0003] In existing technologies, when welding the cutting tooth holder of a coal mining machine, a welding positioning device is used to clamp the cutting tooth holder and move it to the welding position before welding. However, the cutting tooth holder often needs to be manually installed onto the positioning device, meaning that the position of the cutting tooth holder on the positioning device cannot be guaranteed. In this case, the position of the cutting tooth holder when the positioning device moves the cutting tooth holder onto the drum will also be inaccurate. This leads to errors in the welding position of the cutting tooth holder.

[0004] Furthermore, existing simple welding fixtures can only achieve basic fixation and are difficult to adapt to the complex curved surface structure of the roller and the variable installation angle of the cutting tooth holder. In particular, for situations where precise angle adjustment is required on the inclined or curved surface of the roller, existing devices often lack a flexible adjustment mechanism, resulting in the post-welded cutting tooth holder posture failing to meet design requirements. Summary of the Invention

[0005] The main objective of this invention is to provide a welding and positioning device for the cutting tooth seat of a coal mining machine drum, which aims to solve the technical problems in related technologies where the position of the cutting tooth seat on the positioning device cannot be guaranteed when it is manually installed on the positioning device, as well as the poor adjustment flexibility and difficulty in adapting to the welding of complex curved surfaces of the drum.

[0006] To achieve the above objectives, the technical solution provided by this invention is as follows:

[0007] A welding and positioning device for a coal mining machine drum cutting tooth seat includes a support frame, on which an adjustment component and a centering component for centering and clamping the drum are provided.

[0008] The adjustment assembly includes a rotating adjustment ring and a multi-stage adjustment module mounted on the adjustment ring. The adjustment ring is coaxially arranged with the centered roller. A clamping assembly for clamping the cutting tooth holder is mounted at the end of the multi-stage adjustment module. The angle and position of the cutting tooth holder mounted on the roller are adjusted by the multi-stage adjustment module.

[0009] The clamping assembly includes a connecting block 1 connected to the end of the multi-stage adjustment module, a connecting plate disposed on the connecting block 1, and a limiting member for centering and clamping the cutting tooth holder;

[0010] An axial positioning component and a circumferential positioning component are coaxially rotatably provided on the connecting plate. The axial positioning component is used to abut against the cutting tooth holder when it is installed, so as to limit the axial position of the cutting tooth holder on the limiting post.

[0011] The circumferential positioning assembly includes a connecting ring 1 coaxially mounted on a connecting plate, a connecting block 2 on the connecting ring 1, two clamping plates slidably mounted on the connecting block 2, and a driving member 1 for driving the two clamping plates closer or further apart; the two clamping plates are respectively located on both sides of the cutting tooth seat connecting part, so as to adjust and limit the position of the cutting tooth seat connecting part on the clamping assembly when the two clamping plates approach each other and abut against the cutting tooth seat connecting part.

[0012] Specifically, the limiting component includes at least three limiting posts that slide radially along the connecting plate. The limiting posts are used to extend into the cylindrical part of the cutting tooth holder for centering and clamping.

[0013] Specifically, the centering component includes at least three sliding columns that slide on the support frame, and a drive component 2 that drives the multiple sliding columns to slide radially on the support frame; the multiple sliding columns center and clamp the roller by abutting against the inner wall of the roller.

[0014] Specifically, multiple limiting grooves are provided radially on the connecting plate, and multiple limiting posts are slidably disposed in the multiple limiting grooves, with the axial direction of the limiting posts parallel to the axial direction of the connecting plate.

[0015] The limiting component also includes a drive plate that rotates on the connecting block and a drive source that drives the drive plate to rotate. The drive plate has multiple guide grooves that are adapted to the limiting posts. One end of each limiting post slides in the multiple guide grooves. When the drive plate rotates, the positions of the multiple limiting posts in the radial direction of the connecting plate are adjusted simultaneously by the setting of the guide grooves and limiting grooves, so as to clamp and center the cutting tooth holder cylinder.

[0016] Specifically, the axial positioning assembly includes a second connecting ring that rotates coaxially on the connecting plate. The second connecting ring is provided with a positioning plate that can be adjusted radially along the second connecting ring. When clamping the cutting tooth holder, the positioning plate abuts against the cutting tooth holder to limit the position of the cutting tooth holder in the axial direction of the limiting column.

[0017] Specifically, the side of the positioning plate that abuts against the cutting tooth holder is equipped with a magnet, so that the cutting tooth holder can be attracted by the magnet during installation to prevent the cutting tooth holder from moving away from the positioning plate when adjusting its position.

[0018] Specifically, the driving component one includes a lead screw one that rotates on the connecting block two and a driving source two that drives the lead screw one to rotate. The axial direction of the lead screw one is parallel to the radial direction of the connecting plate. The lead screw one is threadedly engaged with two clamping plates. The extension direction of the clamping plates is the same as the axial direction of the limiting post, so that when the lead screw one rotates, it drives the two clamping plates to move closer or further away at the same time, so that when the two clamping plates abut against the connecting part of the cutting tooth seat, the position of the connecting part of the cutting tooth seat in the circumferential direction of the connecting plate is restricted.

[0019] Specifically, a driving component three is provided on the connecting plate and connected to the connecting ring one. The driving component three controls the rotation of the connecting ring one, thereby adjusting the circumferential position of the connecting part of the cutting tooth seat according to the welding condition of the cutting tooth seat.

[0020] Specifically, a sensing component is provided on the clamping plate. The sensing component includes multiple contact rods and multiple contacts adapted to the contact rods. The multiple contacts are slidably disposed within the multiple contact rods. By abutting the multiple contacts against the surface of the roller, the inclined surface of the roller is detected. Based on the feedback signal from the contacts, the control system controls the connecting ring to rotate through the drive component three, thereby adjusting the angle of the cutting tooth seat connecting part according to the inclined surface of the roller.

[0021] Specifically, a cooling component is provided on the clamping plate to cool and reduce the temperature of the welded joint of the cutting tooth holder when it is placed on the roller for welding.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. By using clamping components, axial positioning components, and circumferential positioning components, the precise position of the cutting tooth holder on the limiting post is ensured, thereby ensuring the precise position of the cutting tooth holder placed on the roller by the clamping components, and thus ensuring the accuracy of the welding position of the stop seat.

[0024] 2. The sensor component is set up to detect the actual slope of the roller surface and feed it back to the control system to drive the connecting ring for rotation compensation, which solves the positioning deviation caused by uneven roller surface or design slope.

[0025] 3. By combining the circumferential rotation of the adjusting ring, the spatial displacement of the multi-stage adjusting module, and the angular fine adjustment of the circumferential positioning component, the precise positioning of the cutting tooth seat at any spatial position on the roller surface is achieved, adapting to different spiral arrangement requirements. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a welding and positioning device for a coal mining machine drum cutting tooth seat according to the present invention.

[0027] Figure 2 This is a schematic diagram of the centering component in this invention.

[0028] Figure 3This is a schematic diagram of the structure of the second driving component in this invention.

[0029] Figure 4 yes Figure 3 A schematic diagram of the structure of the adjustment component.

[0030] Figure 5 This is a schematic diagram of the clamping component in this invention.

[0031] Figure 6 This is a schematic diagram of the circumferential positioning component in this invention.

[0032] Figure 7 This is a schematic diagram of the connecting plate in this invention.

[0033] Figure 8 This is a schematic diagram of the axial positioning component in this invention.

[0034] Figure 9 This is a partial cross-sectional schematic diagram of the limiting member in this invention.

[0035] Figure 10 This is a partial exploded view of the limiting component in this invention.

[0036] Figure 11 This is a schematic diagram of the structure of the sensing component and the cooling component in this invention.

[0037] The names of the components in the attached diagram are:

[0038] 1. Support frame; 11. Through slot;

[0039] 2. Adjustment component; 21. Adjustment ring; 22. Multi-stage adjustment module;

[0040] 3. Centering assembly; 31. Sliding column; 32. Drive component two; 33. Lead screw two; 34. Drive source three; 35. Gear set;

[0041] 4. Clamping assembly; 41. Connecting block one; 42. Connecting plate; 421. Limiting groove; 422. Annular groove one; 423. Annular groove two; 43. Limiting component; 44. Limiting post; 45. Drive plate; 451. Guide groove; 46. Sliding sleeve;

[0042] 5. Axial positioning assembly; 51. Connecting ring II; 52. Positioning plate; 521. Sliding plate; 522. Extension plate; 523. Abutment plate; 53. Limiting block; 54. Fastening bolt;

[0043] 6. Circumferential positioning assembly; 61. Connecting ring one; 611. Tooth block; 62. Connecting block two; 63. Clamping plate; 64. Drive component one; 65. Lead screw one; 66. Drive source two; 67. Drive component three; 671. Gear one;

[0044] 7. Sensing component; 71. Contact rod; 72. Contact head;

[0045] 8. Cooling components; 81. Nozzle. Detailed Implementation

[0046] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0047] Reference Figures 1 to 11 A welding and positioning device for a coal mining machine drum cutting tooth holder comprises a support frame 1, an adjustment component 2, a centering component 3, a clamping component 4, an axial positioning component 5, a circumferential positioning component 6, a sensing component 7, and a cooling component 8. The support frame 1 supports the drum, the centering component 3 centers the drum's axis, and the adjustment component 2 moves the clamping component 4 in space to transport the cutting tooth holder on the clamping component 4 to a predetermined welding position on the drum surface. The axial positioning component 5 and the circumferential positioning component 6 fine-tune the posture of the cutting tooth holder.

[0048] Reference Figures 1 to 4 The adjusting assembly 2 and the centering assembly 3 are mounted on the support frame 1. The centering assembly 3 is used to center and clamp the roller to be welded, ensuring that the roller's axis coincides with the reference axis of the device. The adjusting assembly 2 includes a rotatable adjusting ring 21 and a multi-stage adjusting module 22 mounted on the adjusting ring 21. The adjusting ring 21 is coaxially arranged with the centered roller, meaning that the adjusting ring 21 can rotate around the roller's axis. The clamping assembly 4 is mounted at the end of the multi-stage adjusting module 22. The clamping assembly 4 is used to clamp the cutting tooth holder to be welded. By operating the multi-stage adjusting module 22, the spatial position and orientation of the cutting tooth holder can be adjusted, thereby precisely controlling the angle and position at which the cutting tooth holder is mounted on the roller.

[0049] Reference Figure 2 and Figure 3 The centering component 3 includes at least three sliding columns 31 that slide on the support frame 1, and a driving component 32 that drives the multiple sliding columns 31 to slide radially on the support frame 1. Multiple through slots 11 adapted to the sliding columns 31 are provided on the support frame 1, and the multiple sliding columns 31 are respectively slidably disposed within the multiple through slots 11. In this embodiment, both the through slots 11 and the sliding columns 31 are three in number.

[0050] The sliding column 31 extends through the through slot 11 to the lower end of the support frame 1. The second driving component 32 includes a second lead screw 33 and a third driving source 34. The second lead screw 33 is rotatably mounted on the lower part of the support frame 1. The extension direction of the second lead screw 33 is the same as the sliding direction of the sliding column 31. The second lead screw 33 and the sliding column 31 are threadedly engaged. That is, when the second lead screw 33 rotates, the sliding column 31 slides along the axial direction of the second lead screw 33.

[0051] In this embodiment, three lead screws 33 are provided, each corresponding to one of the three sliding columns 31. A gear set 35 is provided between the three lead screws 33 to enable them to rotate synchronously. One of the lead screws 33 is connected to a drive source 34 to drive it to rotate. In this embodiment, the drive source 34 is a motor.

[0052] Three sliding posts 31 are evenly distributed along the circumference. When the drive source 34 operates, it drives the three sliding posts 31 to slide synchronously along the through groove 11. The multiple sliding posts 31 abut against the inner wall of the roller, supporting and centering the roller from the inside, thereby achieving centering and clamping of the roller. This design is adaptable to rollers of different diameters and has strong versatility.

[0053] Reference Figures 5 to 10 The clamping assembly 4 includes a connecting block 41 connected to the end of the multi-stage adjustment module 22, a connecting plate 42 disposed on the connecting block 41, and a limiting member 43 for centering and clamping the cutting tooth holder.

[0054] The limiting member 43 includes at least three limiting posts 44 that slide radially along the connecting plate 42. These limiting posts 44 are used to extend into the cylindrical portion of the cutting tooth holder and achieve centering and clamping of the cutting tooth holder by tightening from the inside out. This internal support centering method can effectively ensure that the axis of the cutting tooth holder is aligned with the axis of the clamping assembly 4.

[0055] Reference Figure 9 and Figure 10 As shown, a plurality of limiting grooves 421 are formed radially on the connecting plate 42. A plurality of limiting posts 44 are slidably disposed within the plurality of limiting grooves 421, and the axial direction of the limiting posts 44 is parallel to the axial direction of the connecting plate 42. In this embodiment, there are three limiting grooves 421 and three limiting posts 44, which are evenly distributed along the axial direction of the connecting plate 42.

[0056] The limiting member 43 also includes a drive plate 45 that rotates on the connecting block 41 and a drive source 1 that drives the drive plate 45 to rotate. The drive source 1 is disposed inside the connecting block 41 (not shown in the figure). The drive plate 45 is disposed between the connecting plate 42 and the connecting block 41, and the drive plate 45 is connected to the output end of the drive source 1. The drive plate 45 has a plurality of guide grooves 451 adapted to the limiting posts 44, and one end of the plurality of limiting posts 44 slides in the plurality of guide grooves 451 respectively. The guide grooves 451 are eccentrically positioned.

[0057] When the drive source drives the drive plate 45 to rotate, the rotational motion of the drive plate 45 is converted into linear movement of the limit pins 44 along the radial direction of the limit pins 44 due to the cooperation between the guide groove 451 and the limiting post 44, and the radial guiding effect of the limiting groove 421 on the limit pins 44. Simultaneously, the positions of multiple limit pins 44 in the radial direction of the connecting plate 42 are adjusted, causing them to expand outward or contract inward simultaneously, thereby quickly and stably clamping, centering, or releasing the cylindrical portion of the cutting tooth holder. This ensures that the cylindrical portion of the cutting tooth holder is coaxially fixed with the connecting plate 42.

[0058] Reference Figure 10 A sliding sleeve 46 is coaxially rotatable outside the limiting post to reduce the friction between the sliding sleeve 46 and the inner wall of the cutting tooth holder sleeve when adjusting the position of the cutting tooth holder on the limiting post 44.

[0059] Reference Figures 5 to 8 An axial positioning component 5 is disposed on a connecting plate 42 to limit the axial position of the cutting tooth holder relative to the limiting post 44. An annular groove 422 is formed on the connecting plate 42, and the annular groove 422 is coaxially disposed with the connecting plate 42. The axial positioning component 5 includes a connecting ring 51 and a positioning plate 52 disposed on the connecting ring 51. The connecting ring 51 is rotatably disposed within the annular groove 422. A limiting block 53 extending radially is disposed on the connecting ring 51, and the limiting block 53 is hollow. The positioning plate 52 includes a sliding plate 521 sliding within the limiting block 53, an extension plate 522 fixedly connected to the sliding plate 521, and an abutment plate 523 fixedly connected to the extension plate 522. The sliding plate 521 slides radially within the limiting block 53 along the connecting ring 51. The extension plate 522 is perpendicular to the sliding plate 521, and the extending direction of the extension plate 522 is the same as the axial direction of the limiting post 44. The abutment plate 523 is disposed on the side of the extension plate 522 away from the sliding plate 521 and is perpendicular to the extension plate 522. A fastening bolt 54 is provided on the limiting block 53 to limit the position of the sliding plate 521 on the limiting block 53.

[0060] By adjusting the radial position of the positioning plate 52 on the connecting ring 51, the positioning plate 52 is made to abut against the end face or a specific part of the cutting tooth seat when clamping the cutting tooth seat, thereby limiting the position of the cutting tooth seat in the axial direction of the limiting post 44.

[0061] In this embodiment, the side of the positioning plate 52 that abuts against the cutting tooth holder is configured as a magnet, that is, the abutment plate 523 is configured as a magnet. The magnetic force can be used to prevent the cutting tooth holder from moving away from the positioning plate 52 due to gravity or vibration when adjusting its position, thereby playing an auxiliary role in fixing it.

[0062] Reference Figures 5 to 8 A circumferential positioning component 6 is disposed on the connecting plate 42. The circumferential positioning component 6 is used to restrict the rotational freedom of the cutting tooth holder around the axis of the connecting plate 42. An annular groove 2 423 is provided on the connecting plate 42. The annular groove 2 423 is coaxially disposed with the annular groove 1 422, and the annular groove 2 423 is disposed outside the annular groove 1 422.

[0063] The circumferential positioning assembly 6 includes a connecting ring 61 coaxially mounted on the connecting plate 42 and a connecting block 62 mounted on the connecting ring 61. The connecting ring 61 is rotatably mounted within the annular groove 423. The connecting block 62 is located on the side of the connecting ring opposite to the connecting plate 42. Two clamping plates 63 are slidably mounted on the connecting block 62, and a driving member 64 drives the two clamping plates 63 to move closer or further apart. The two clamping plates 63 are respectively located on both sides of the cutting tooth holder connecting portion. The cutting tooth holder connecting portion typically has a non-circular cross-section or a specific flange structure. When the driving member 64 drives the two clamping plates 63 to move closer to each other, the clamping plates 63 clamp the cutting tooth holder connecting portion from both sides, thereby adjusting and limiting the circumferential position of the cutting tooth holder connecting portion on the clamping assembly 4, preventing the cutting tooth holder from rotating.

[0064] The driving component 64 includes a lead screw 65 rotating on the connecting block 62 and a driving source 66 for driving the lead screw 65 to rotate. The driving source 66 is fixedly mounted on the connecting block 62. The axial direction of the lead screw 65 is parallel to the radial direction of the connecting plate 42, and the lead screw 65 is threadedly engaged with the two clamping plates 63. The lead screw 65 has two sections of threads with opposite directions, which engage with the two clamping plates 63 respectively. The extension direction of the clamping plates 63 is the same as the axial direction of the limiting post 44. When the driving source 66 drives the lead screw 65 to rotate, it causes the two clamping plates 63 to move closer or further away simultaneously. When the two clamping plates 63 abut against the connecting part of the cutting tooth seat, the position of the connecting part of the cutting tooth seat in the circumferential direction of the connecting plate 42 is restricted, achieving stable circumferential positioning. In this embodiment, the driving source 66 is a motor.

[0065] To accommodate potential variations in slope or helix on the roller surface, a drive component 3 67 connected to the connecting ring 61 is provided on the connecting plate 42. By controlling the rotation of the connecting ring 61 via the drive component 3 67, the circumferential position of the cutting tooth holder connection can be finely adjusted according to the welding condition of the cutting tooth holder. This rotation adjustment function, combined with the movement of the multi-stage adjustment module 22, enables comprehensive adjustment of the cutting tooth holder's posture.

[0066] A plurality of toothed blocks 611 are evenly arranged circumferentially on the outer circumferential side of the connecting ring 61. The driving component 67 includes a gear 671 and a driving source 4 for driving the gear 671 to rotate. The gear 671 is rotatably mounted on the connecting plate 42 and meshes with the toothed blocks 611 of the connecting ring 61. The driving source 4 is disposed inside the connecting plate 42 and connected to the gear 671 to drive the gear 671 to rotate (not shown in the figure).

[0067] Reference Figure 11 The sensing component 7 is used to achieve intelligent and automated angle adjustment. It is located on the side of the clamping plate 63 away from the axis of the connecting plate 42. The sensing component 7 includes multiple contact rods 71 ​​mounted on the clamping plate 63 and multiple contacts 72 adapted to each contact rod 71. The contacts 72 are slidably disposed within the contact rods 71. A spring or sensor can be installed between the contact rods 71 ​​and the contacts 72, allowing the contacts 72 to retract and generate an electrical signal when subjected to external force. During operation, the slope of the roller can be detected by contacting the multiple contacts 72 against the roller surface. If the roller surface has a slope, the compression of different contacts 72 will differ, or the triggered signals will vary. The sensing component 7 feeds back the detected slope information to the drive component 67. The control system, based on the feedback signal, controls the rotation of the connecting ring 61 via the drive component 67, thereby automatically adjusting the angle of the cutting tooth seat connection according to the actual slope of the roller, ensuring a perfect match between the welding angle of the cutting tooth seat and the tangential direction of the roller's curved surface.

[0068] Reference Figure 11 The cooling component 8 is also located on the side of the clamping plate 63 away from the axis of the connecting plate 42. This is to prevent the high temperatures generated during welding from affecting the accuracy of the clamping component 4 or damaging the components. The cooling component 8 includes a nozzle 81 mounted on the clamping plate 63. The clamping plate 63 also has an internal circulating air cooling channel (not shown in the figure) connected to the nozzle 81. When the cutting tooth holder is placed on the roller for welding, the nozzle 81 cools the welded joint of the cutting tooth holder, reducing heat transfer to the clamping mechanism, ensuring the stability of positioning accuracy, and extending the service life of the device.

[0069] Since the circumferential positioning component 6, namely the clamping plate 63, is used to limit the position of the connecting part, the orientation of the contact 72 and the nozzle 81 is the welding position of the connecting part. That is, there is no need to frequently adjust the position of the contact 72 and the nozzle 81, saving work steps.

[0070] The specific working method is as follows:

[0071] First, move the roller to be welded onto the support frame 1, start the drive component 32 of the centering assembly 3, drive the sliding column 31 to move radially until it is in close contact with the inner wall of the roller, and center and fix the roller.

[0072] Next, the clamping assembly 4 is used to grip the cutting tooth holder. The first drive source of the limiting component 43 is activated, driving the drive plate 45 to rotate, causing the limiting post 44 to radially retract, fitting the cylindrical part of the cutting tooth holder into the limiting post 44. Then, the drive plate 45 is driven in the reverse direction, causing the limiting post 44 to outwardly tighten the cylindrical part of the cutting tooth holder. Simultaneously, the positioning plate 52 of the axial positioning assembly 5 is adjusted so that it adheres to the end face of the cutting tooth holder via magnets, limiting axial displacement. The second drive component 32 of the circumferential positioning assembly 6 is activated, driving the lead screw 65 to rotate, causing the two clamping plates 63 to clamp the connecting part of the cutting tooth holder, limiting circumferential rotation.

[0073] Subsequently, the adjustment component 2 is operated. By rotating the adjustment ring 21 and adjusting the multi-stage adjustment module 22, the clamping component 4 holding the cutting tooth seat is moved to the vicinity of the predetermined welding position on the roller.

[0074] During the precise positioning stage, the contact 72 of the sensing component 7 contacts the roller surface, detects the inclination deviation, and feeds back the signal to the drive component 67. The drive component 67 drives the connecting ring 61 to rotate, finely adjusting the angle of the cutting tooth seat to perfectly match the design requirements.

[0075] Finally, after confirming the position is correct, welding is carried out. During welding, cooling component 8 continues to operate to cool the welding area. After welding is completed, all components are reset, the cutting tooth holder and roller are released, completing the welding positioning process for one cutting tooth holder.

[0076] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A welding and positioning device for a coal mining machine drum cutting tooth seat, comprising a support frame, characterized in that, The support frame is equipped with an adjustment component and a centering component for centering and clamping the rollers; The adjustment assembly includes a rotating adjustment ring and a multi-stage adjustment module mounted on the adjustment ring. The adjustment ring is coaxially arranged with the centered roller. A clamping assembly for clamping the cutting tooth holder is mounted at the end of the multi-stage adjustment module. The angle and position of the cutting tooth holder mounted on the roller are adjusted by the multi-stage adjustment module. The clamping assembly includes a connecting block 1 connected to the end of the multi-stage adjustment module, a connecting plate disposed on the connecting block 1, and a limiting member for centering and clamping the cutting tooth holder; An axial positioning component and a circumferential positioning component are coaxially rotatably provided on the connecting plate. The axial positioning component is used to abut against the cutting tooth holder when it is installed, so as to limit the axial position of the cutting tooth holder on the limiting post. The circumferential positioning assembly includes a connecting ring 1 coaxially mounted on a connecting plate, a connecting block 2 on the connecting ring 1, two clamping plates slidably mounted on the connecting block 2, and a driving member 1 for driving the two clamping plates closer or further away; the two clamping plates are respectively located on both sides of the cutting tooth seat connecting part, so as to adjust and limit the position of the cutting tooth seat connecting part on the clamping assembly when the two clamping plates approach each other and abut against the cutting tooth seat connecting part. A sensing component is provided on the clamping plate. The sensing component includes multiple contact rods and multiple contacts adapted to the contact rods. The multiple contacts are slidably disposed in the multiple contact rods. By abutting the multiple contacts against the surface of the roller, the inclined surface of the roller is detected. The control system controls the connecting ring to rotate through the drive component three according to the feedback signal of the contacts, so as to adjust the angle of the cutting tooth seat connecting part according to the inclined surface of the roller. A cooling assembly is provided on the clamping plate to cool and reduce the temperature of the welded joint of the cutting tooth holder when it is placed on the roller for welding.

2. The welding and positioning device for the cutting tooth seat of a coal mining machine drum according to claim 1, characterized in that, The limiting component includes at least three limiting posts that slide radially along the connecting plate. The limiting posts are used to extend into the cylindrical part of the cutting tooth holder for centering and clamping.

3. The welding and positioning device for the cutting tooth seat of a coal mining machine drum according to claim 1, characterized in that, The centering assembly includes at least three sliding columns that slide on the support frame, and a drive component 2 that drives the multiple sliding columns to slide radially on the support frame; the multiple sliding columns center and clamp the roller by abutting against the inner wall of the roller.

4. The welding and positioning device for the cutting tooth seat of a coal mining machine drum according to claim 2, characterized in that, Multiple limiting grooves are provided radially on the connecting plate, and multiple limiting posts are slidably disposed in the multiple limiting grooves, with the axial direction of the limiting posts being parallel to the axial direction of the connecting plate. The limiting component also includes a drive plate that rotates on the connecting block and a drive source that drives the drive plate to rotate. The drive plate has multiple guide grooves that are adapted to the limiting posts. One end of each limiting post slides in the multiple guide grooves. When the drive plate rotates, the positions of the multiple limiting posts in the radial direction of the connecting plate are adjusted simultaneously by the setting of the guide grooves and limiting grooves, so as to clamp and center the cutting tooth holder cylinder.

5. The welding and positioning device for the cutting tooth seat of a coal mining machine drum according to claim 2, characterized in that, The axial positioning assembly includes a second connecting ring that rotates coaxially on the connecting plate. The second connecting ring is provided with a positioning plate that can be adjusted radially along the second connecting ring. When clamping the cutting tooth holder, the positioning plate abuts against the cutting tooth holder to limit the position of the cutting tooth holder in the axial direction of the limiting column.

6. The welding and positioning device for the cutting tooth seat of a coal mining machine drum according to claim 5, characterized in that, The side of the positioning plate that abuts against the cutting tooth holder is equipped with a magnet so that the cutting tooth holder can be attracted by the magnet during installation to prevent the cutting tooth holder from moving away from the positioning plate when adjusting its position.

7. The welding and positioning device for the cutting tooth seat of a coal mining machine drum according to claim 2, characterized in that, The driving component includes a lead screw that rotates on the connecting block and a driving source that drives the lead screw to rotate. The axial direction of the lead screw is parallel to the radial direction of the connecting plate. The lead screw is threaded into two clamping plates. The extension direction of the clamping plates is the same as the axial direction of the limiting post, so that when the lead screw rotates, it drives the two clamping plates to move closer or further away at the same time, so that when the two clamping plates abut against the connecting part of the cutting tooth seat, the position of the connecting part of the cutting tooth seat in the circumferential direction of the connecting plate is restricted.

8. The welding and positioning device for the cutting tooth seat of a coal mining machine drum according to claim 7, characterized in that, A driving component three is provided on the connecting plate, which is connected to the connecting ring one. The driving component three controls the rotation of the connecting ring one, thereby adjusting the circumferential position of the connecting part of the cutting tooth seat according to the welding condition of the cutting tooth seat.

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