A welding tool for mining equipment

Abstract

This invention provides a welding fixture for mining equipment, belonging to the field of welding fixture technology. It includes a docking base with a clamping structure mounted on it. The clamping structure includes a support seat and a workpiece clamping component. A support rod is mounted on the support seat, and several first and second movable support bars are screwed onto the support rod. Each of the first and second movable support bars has an arched piece fixedly connected to it, and the workpiece body is assembled on the arched piece. The workpiece clamping component is connected to the support seat, the first and second movable support bars, and is detachably connected to the workpiece body. The workpiece clamping component includes a variable support part and a reinforcing part. This invention solves the problem that in existing mining equipment, during welding, the workpiece is mostly placed directly on the workbench for welding. However, during operation of the welding equipment or other external factors, the workpiece may move, potentially causing welding deviations and making it impossible to guarantee accurate welding.

Description

Technical Field

[0001] This invention belongs to the field of welding tooling technology, and specifically relates to a welding tooling for mining equipment. Background Technology

[0002] Laser welding is a welding method that uses a focused laser beam to bombard the workpiece, generating heat to weld components. Due to the optical properties of lasers, such as refraction and focusing, laser welding is ideal for welding miniature parts and areas with poor accessibility. Laser welding also features low heat input, minimal weld deformation, and is unaffected by electromagnetic fields.

[0003] In existing mining equipment, the workpiece is usually placed directly on the workbench during welding. However, the workpiece may move during operation or due to other external factors, which may cause deviations in the welding process and make it impossible to guarantee accurate welding. Summary of the Invention

[0004] This invention provides a welding fixture for mining equipment, which aims to solve the problem that in existing mining equipment, the workpiece is mostly placed directly on the workbench for welding. However, during the operation of the welding equipment or other external factors, the workpiece may move, which may cause welding deviations and make it impossible to guarantee accurate welding of the workpiece.

[0005] This invention provides a welding fixture for mining equipment, including a docking base on which a clamping structure is mounted;

[0006] The clamping structure includes a bearing seat and a workpiece clamping component. A bearing rod is installed on the bearing seat, and several first movable bearing bars and second movable bearing bars are screwed onto the bearing bars. An arched piece is fixedly connected to each of the first movable bearing bars and second movable bearing bars, and the workpiece body is assembled on the arched piece.

[0007] Each workpiece clamping component is connected to the bearing seat, the first movable bearing bar and the second movable bearing bar, and is detachably connected to the workpiece body. The workpiece clamping component includes a variable bearing part and a reinforcing part.

[0008] Each of the variable bearing parts is connected to the bearing seat, the first movable bearing bar and the second movable bearing bar, and the reinforcing part is connected to the variable bearing part and is detachably connected to the workpiece body;

[0009] The variable bearing part includes a pair of movable parts, both of which are fixedly connected to the bearing seat and are located on both sides of the bearing seat;

[0010] One of the movable parts is movably connected to the strip groove on the first movable support bar, and the other movable part is movably connected to the strip groove on the second movable support bar; the movable part and the reinforcing part are connected.

[0011] Furthermore, both the first movable support bar and the second movable support bar are provided in pairs, with the pair of first movable support bars located between the pair of second movable support bars, and both are screwed to the support bar;

[0012] There are two pairs of arched plates, and each pair of arched plates is fixed to the upper end of the first movable bearing bar and the second movable bearing bar;

[0013] Among them, the lower sidewalls of the first movable bearing strip and the second movable bearing strip are fixedly connected to a through strip groove, which is connected to the variable bearing part.

[0014] Furthermore, a hydraulic cylinder is fixedly connected to the bearing seat, and the hydraulic cylinder is located on the side of the bearing seat that is farther away from the bearing bar.

[0015] Furthermore, the movable part includes a movable column fixed to the support base, a hoop cylinder is clamped to the movable column and is movably connected to the movable column, and adjacent pairs of hoop cylinders are connected via the support column, a spiral beryllium copper wire is clamped to the movable column, and both ends of the spiral beryllium copper wire are fixed to the support base and the hoop cylinder respectively, a movable rod is fixed to the side of the hoop cylinder farther from the support column, and the end of the movable rod farther from the hoop cylinder is embedded in the strip groove and is movably connected to the strip groove.

[0016] Furthermore, the reinforcing part includes a clamping block and a clamping stop. The clamping block is detachably connected to the workpiece body. A suction plate is installed on the clamping block, and the suction plate is detachably connected to the workpiece body. Several equally spaced arched reinforcing plates are also installed on the clamping block and are detachably connected to the workpiece body. The clamping stop is connected to the clamping block and to the bearing column.

[0017] Furthermore, the clamping stop includes a first constraint block fixed to one of the supporting columns, a second constraint block fixed to another supporting column, and a fastening part. The first constraint block has a second U-shaped opening, and the second constraint block has a pair of first U-shaped openings. The fastening part is connected to the clamping block, and each of them is detachably connected to the first constraint block and the second constraint block.

[0018] Furthermore, the fastening part includes a first traction bar, a pair of second traction bars, and a pair of stop bars. The first traction bar and the second traction bar are both rubber strips. The first traction bar is fixedly connected to one end of the clamping block, and the pair of second traction bars are fixedly connected to the other end of the clamping block. The first traction bar passes through the pair of second traction bars. The pair of stop bars are each fixedly connected to the first traction bar and the second traction bar. The pair of stop bars are also detachably connected to the first constraint block and the second constraint block.

[0019] Furthermore, a through opening is reserved on the bearing rod, and a movable column is movably installed in the through opening. The movable column passes through the bearing seat and is also movably connected to the bearing seat. A constraint strip is fixed to the wall of the movable column, and each constraint strip is movably connected to the bearing seat and the through opening. An interlocking constraint part is installed at the end of the movable column, and the interlocking constraint part is detachably connected to the arched piece.

[0020] Furthermore, the interlocking constraint part includes a movable tube fixed to the movable column, the movable end of the movable tube is fixed to a triangular block, the triangular block is also movably connected to an arched piece, wherein the triangular block is located in the middle of a pair of opposite arched pieces, and an arched opening is reserved on the upper wall of the triangular block, the arched opening being tightly connected to the workpiece body.

[0021] Furthermore, the docking base includes a base plate, one side of which is fixedly connected to a motor. A slide is reserved at the upper end of the base plate, and a lead screw is screwed into the slide. The threads at both ends of the lead screw turn in opposite directions. The rotating part of the motor is connected to one end of the lead screw, and the two ends of the lead screw are connected to sliders. The sliders can slide in the slide and are fixedly connected to the hydraulic cylinder.

[0022] The beneficial effects of this invention are as follows:

[0023] During workpiece clamping, this invention places the workpiece body in a workpiece clamping component. Based on the workpiece body's specifications, the angle between the first and second movable support bars is changed, allowing them to rotate together and in opposite directions on the support bar. A cooperatively installed variable support part ensures the workpiece body is securely mounted on two pairs of arched plates. The user then manipulates the reinforcing part to clamp the outer circumference of the workpiece body, thereby clamping it onto several arched plates. This invention can clamp and support workpiece bodies of different specifications, providing convenient operation and ensuring that the workpiece body does not move during welding, thus guaranteeing welding accuracy.

[0024] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0026] Figure 1 This is an overall schematic diagram of an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the clamping structure according to an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the clamping block according to an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the arched sheet arrangement according to an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the suction plate according to an embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of the support base according to an embodiment of the present invention;

[0032] Figure 7 This is a schematic diagram of a triangular block according to an embodiment of the present invention;

[0033] Figure 8 This is a schematic cross-sectional view of the bearing rod according to an embodiment of the present invention;

[0034] Figure 9 This is a schematic diagram of the through-hole in an embodiment of the present invention;

[0035] Figure 10 This is a schematic diagram of the first and second movable support bars according to an embodiment of the present invention;

[0036] Figure 11 This is a schematic diagram of the second constraint block according to an embodiment of the present invention;

[0037] Figure 12 This is a schematic diagram of the first constraint block according to an embodiment of the present invention;

[0038] Reference numerals: 1. Docking base; 2. Clamping structure; 11. Base plate; 12. Motor; 13. Slide rail; 14. Lead screw; 15. Slider; 21. Bearing seat; 22. Workpiece body; 23. Clamping block; 24. First movable bearing bar; 25. Second movable bearing bar; 26. Arched plate; 27. Strip groove; 28. Suction plate; 29. ​​Arched reinforcing plate; 210. Hydraulic cylinder; 211. Movable column; 212. Movable tube; 21 3. First traction bar; 214. Second traction bar; 215. Stop bar; 216. Bearing column; 217. Variable bar; 218. Constraint bar; 219. Triangular block; 220. Arched opening; 221. Bearing bar; 222. Through opening; 223. First constraint block; 224. Variable column; 225. Spiral beryllium copper wire; 226. Hoop; 227. Second constraint block; 228. First U-shaped opening; 229. Second U-shaped opening. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0040] Reference Figure 1 This invention provides a welding fixture for mining equipment, comprising a docking base 1, on which a clamping structure 2 is mounted.

[0041] The clamping structure 2 securely clamps the workpiece, preventing the workpiece from moving during welding and affecting the welding accuracy. At the same time, the installation of the docking base 1 allows the welding joints of the clamped workpieces to be in contact, thus facilitating the welding work of the welding equipment.

[0042] Reference Figures 2-12 The clamping structure 2 includes a bearing seat 21 and a workpiece clamping component. A bearing rod 221 is mounted on the bearing seat 21. Several first movable bearing bars 24 and second movable bearing bars 25 are screwed onto the bearing rod 221. An arched piece 26 is fixedly connected to each of the first movable bearing bars 24 and second movable bearing bars 25. The workpiece body 22 is assembled on the arched piece 26.

[0043] Each workpiece clamping member is connected to the bearing seat 21, the first movable bearing bar 24 and the second movable bearing bar 25, and is detachably connected to the workpiece body 22. The workpiece clamping member includes a variable bearing part and a reinforcing part.

[0044] Each of the variable bearing parts is connected to the bearing seat 21, the first movable bearing bar 24 and the second movable bearing bar 25. The reinforcing part is connected to the variable bearing part and is detachably connected to the workpiece body 22.

[0045] Both the first movable support bar 24 and the second movable support bar 25 are provided in pairs, with the pair of first movable support bars 24 located between the pair of second movable support bars 25, and both are screwed to the support bar 221;

[0046] Two pairs of arched plates 26 are provided, and each pair of arched plates 26 is fixedly connected to the upper end of the first movable support bar 24 and the second movable support bar 25;

[0047] Among them, the lower sidewalls of the first movable support bar 24 and the second movable support bar 25 are fixedly connected to the through strip groove 27, which is connected to the variable support part.

[0048] A hydraulic cylinder 210 is fixedly connected to the support 21. The hydraulic cylinder 210 is located on the side of the support 21 that is farthest from the support bar 221. The hydraulic cylinder 210 can adjust the vertical height of the clamped workpiece body 22 to ensure the alignment of the welding positions of the two workpiece bodies 22.

[0049] During the clamping of the workpiece body 22, the workpiece body 22 is installed in the workpiece clamping member. According to the specifications of the workpiece body 22, the angle between the first movable support bar 24 and the second movable support bar 25 is changed, so that the first movable support bar 24 and the second movable support bar 25 rotate together and in opposite directions on the support bar 221. The variable support part installed in cooperation allows the workpiece body 22 to be stably mounted on the two pairs of arched plates 26. Then, the user operates the reinforcement part to clamp the outer peripheral surface of the workpiece body 22, and then clamp the workpiece body 22 on several arched plates 26. It can clamp and support workpiece bodies 22 of different specifications, and the operation is convenient.

[0050] Reference Figures 2-12 The variable bearing part includes a pair of movable parts, both of which are fixedly connected to the bearing seat 21 and are located on both sides of the bearing seat 21.

[0051] One of the movable parts is movably connected to the strip groove 27 on the first movable support bar 24, and the other movable part is movably connected to the strip groove 27 on the second movable support bar 25; the movable part and the reinforcing part are connected.

[0052] The movable part includes a movable column 224 fixed to the support 21. A hoop 226 is clamped to the movable column 224 and is movably connected to the movable column 224. A pair of adjacent hoops 226 are connected via the support column 216. A spiral beryllium copper wire 225 is clamped to the movable column 224. Both ends of the spiral beryllium copper wire 225 are fixed to the support 21 and the hoop 226. A movable rod 217 is fixed to the side of the hoop 226 that is farthest from the support column 216. The end of the movable rod 217 that is farthest from the hoop 226 is embedded in the strip groove 27 and is movably connected to the strip groove 27.

[0053] Reference Figures 2-12 The reinforcing part includes a clamping block 23 and a clamping stop. The clamping block 23 is detachably connected to the workpiece body 22. A suction plate 28 is installed on the clamping block 23. The suction plate 28 is detachably connected to the workpiece body 22. Several equally spaced arched reinforcing plates 29 are also installed on the clamping block 23 and are detachably connected to the workpiece body 22. The clamping stop is connected to the clamping block 23 and to the bearing column 216.

[0054] The clamping stop includes a first constraint block 223 fixed to one of the supporting columns 216, a second constraint block 227 fixed to the other supporting column 216, and a fastening part. The first constraint block 223 has a second U-shaped opening 229 reserved, and the second constraint block 227 has a pair of first U-shaped openings 228 reserved. The fastening part is connected to the clamping block 23, and each of them is detachably connected to the first constraint block 223 and the second constraint block 227.

[0055] The fastening part includes a first traction bar 213, a pair of second traction bars 214 and a pair of stop bars 215. The first traction bar 213 and the second traction bar 214 are both rubber strips. The first traction bar 213 is fixedly connected to one end of the clamping block 23, and the pair of second traction bars 214 are fixedly connected to the other end of the clamping block 23. The first traction bar 213 passes through the pair of second traction bars 214. The pair of stop bars 215 are each fixedly connected to the first traction bar 213 and the second traction bar 214. The pair of stop bars 215 are also detachably connected to the first constraint block 223 and the second constraint block 227.

[0056] When clamping the workpiece body 22, the angle between the first movable support bar 24 and the second movable support bar 25 is changed according to the specifications of the workpiece body 22. During the rotation of the first movable support bar 24 and the second movable support bar 25, and with the cooperation of the user, the movable bar 217 can move in the strip groove 27, and the traction sleeve 226 moves on the movable column 224, thereby changing the distance between the support column 216 and the support seat 21. When clamping a thicker workpiece body 22, the distance between the support column 216 and the support seat 21 is larger, and the distance between the support column 216 and the arched piece 26 is smaller. When clamping a thinner workpiece body 22, the distance between the bearing column 216 and the bearing seat 21 is small, while the distance between the bearing column 216 and the arched piece 26 is large. Therefore, during subsequent use, the first constraint block 223 and the second constraint block 227 have similar effects on the clamping block 23 via the fastening part, thereby ensuring that the workpiece body 22 is always clamped on several arched pieces 26. This is suitable for clamping workpiece bodies 22 of various specifications, reducing the limitations of the device. After the orientation adjustment of a pair of bearing columns 216 is completed, the orientation of the first constraint block 223 and the second constraint block 227 changes with the bearing column 216 to the required position. At this moment, the user pulls a pair of stop bars 215, causing the first traction bar 213 to pass through a pair of second traction bars 214 and extend. Finally, the pair of stop bars 215 are respectively engaged with the first constraint block 223 and the second constraint block 227. The first constraint block 223 and the second constraint block 227 are hook-shaped, which can constrain the stop bars 215. The second traction bar 214 is engaged in the first U-shaped opening 228, and the first traction bar 213 is engaged in the second U-shaped opening 229. With the deformation cooperation of the first traction bar 213 and the second traction bar 214, the clamping block 23 can be tightly fastened to the workpiece body 22. Under the support of several arched plates 26, the workpiece body 22 can be firmly clamped on the clamping block 23 and the arched plates 26. At this time, the resistance between the clamping block 23 and the workpiece body 22 can be increased by the installed arched reinforcing plates 29 to prevent the workpiece body 22 from moving. The clamping block 23 is a sheet made of TPE material and can be bent. It can be tightly attached to the outer wall of the workpiece body 22 according to various specifications of workpiece body 22. When the clamping block 23 is tightly attached to the workpiece body 22, the suction plate 28 is suctioned to the workpiece body 22 and reinforces it.

[0057] Reference Figures 2-12The support rod 221 has a through opening 222, in which a movable column 211 is movably installed. The movable column 211 passes through the support seat 21 and is also movably connected to the support seat 21. A constraint strip 218 is fixed to the wall of the movable column 211. Each constraint strip 218 is movably connected to the support seat 21 and the through opening 222. An interlocking constraint part is installed at the end of the movable column 211. The interlocking constraint part and the arched piece 26 are detachably connected.

[0058] The interlocking constraint part includes a movable tube 212 fixed to the movable column 211. The movable end of the movable tube 212 is fixed to a triangular block 219. The triangular block 219 is also movably connected to an arched piece 26. The triangular block 219 is located in the center of a pair of opposite arched pieces 26. An arched opening 220 is reserved on the upper wall of the triangular block 219. The arched opening 220 is tightly connected to the workpiece body 22.

[0059] After the workpiece body 22 is clamped between the clamping block 23 and the arched piece 26, a gap is left between the pair of arched pieces 26 facing each other to prevent the workpiece body 22 from moving during clamping. During the clamping of the workpiece body 22, the user pulls the movable column 211, causing the movable column 211 to move outward in the through-hole 222. The movable column 211 is a structure in which the movable rod and the spiral beryllium copper wire 2 cooperate with each other. When the user pulls the movable column 211, the spiral beryllium copper wire 2 in the through-hole 222 extends. In addition, the installed constraint bar 218 ensures that the movable column 211 can only perform translation and cannot rotate. During the clamping of the workpiece body 22, when the workpiece body 22 presses against the arched opening 220, the three Triangular block 219 moves downwards, shortening the spiral beryllium copper wire 3 installed in movable tube 212. After the workpiece body 22 is clamped between clamping block 23 and arched plate 26, movable column 211 is released. With the cooperation of spiral beryllium copper wire 2 in through port 222, arched port 220 can be pulled to move on the surface of workpiece body 22, and triangular block 219 moves towards the center of a pair of arched plates 26. With the cooperation of the structure of triangular block 219 itself, a pair of sidewalls of triangular block 219 are pressed against the lower end of a pair of arched plates 26, thereby preventing external forces from causing the arched plates 26 to rotate in the opposite direction. In addition, triangular block 219 is a magnet that can attract the surface of arched plate 26, thereby ensuring the stability of arched plate 26 again.

[0060] Reference Figure 1 The docking base 1 includes a base plate 11, one side of which is fixedly connected to a motor 12. A slide rail 13 is reserved at the upper end of the base plate 11. A lead screw 14 is screwed into the slide rail 13. The threads at both ends of the lead screw 14 turn in opposite directions. The rotating part of the motor 12 is connected to one end of the lead screw 14. The two ends of the lead screw 14 are connected to sliders 15. The sliders 15 can slide in the slide rail 13. The sliders 15 are fixedly connected to the hydraulic cylinder 210.

[0061] After the workpiece is clamped, the motor 12 pulls the lead screw 14 to rotate, and a pair of sliders 15 move in the slide rail 13 and approach each other, so that the welding points of the workpieces approach each other until the welding points of the workpieces are in contact, which facilitates the welding equipment to weld the workpieces.

[0062] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A welding fixture for mining equipment, characterized in that, Includes a docking base, on which a clamping structure is mounted; The clamping structure includes a bearing seat and a workpiece clamping component. A bearing rod is installed on the bearing seat, and several first movable bearing bars and second movable bearing bars are screwed onto the bearing bars. An arched piece is fixedly connected to each of the first movable bearing bars and second movable bearing bars, and the workpiece body is assembled on the arched piece. Each workpiece clamping component is connected to the bearing seat, the first movable bearing bar and the second movable bearing bar, and is detachably connected to the workpiece body. The workpiece clamping component includes a variable bearing part and a reinforcing part. Each of the variable bearing parts is connected to the bearing seat, the first movable bearing bar and the second movable bearing bar, and the reinforcing part is connected to the variable bearing part and is detachably connected to the workpiece body; The variable bearing part includes a pair of movable parts, both of which are fixedly connected to the bearing seat and are located on both sides of the bearing seat; One movable part is movably connected to the strip groove on the first movable support bar, and the other movable part is movably connected to the strip groove on the second movable support bar; the movable part and the reinforcing part are connected. Both the first movable support bar and the second movable support bar are provided in pairs, with the pair of first movable support bars located between the pair of second movable support bars, and both are screwed to the support bar; There are two pairs of arched plates, and each pair of arched plates is fixed to the upper end of the first movable bearing bar and the second movable bearing bar; Among them, the lower sidewalls of the first movable bearing strip and the second movable bearing strip are fixedly connected to a through strip groove, which is connected to the variable bearing part; A hydraulic cylinder is fixedly connected to the bearing seat, and the hydraulic cylinder is located on the side of the bearing seat that is farthest from the bearing bar; The movable part includes a movable column fixed to the bearing seat, a hoop cylinder is clamped on the movable column and is movably connected to the movable column, and a pair of adjacent hoop cylinders are connected through the bearing column. A spiral beryllium copper wire is clamped on the movable column, and both ends of the spiral beryllium copper wire are fixed to the bearing seat and the hoop cylinder respectively. A movable rod is fixed to the side of the hoop cylinder that is farthest from the bearing column, and the end of the movable rod that is farthest from the hoop cylinder is embedded in the strip groove and is movably connected to the strip groove. The reinforcing part includes a clamping block and a clamping stop. The clamping block is detachably connected to the workpiece body. A suction plate is installed on the clamping block, and the suction plate is detachably connected to the workpiece body. Several equally spaced arched reinforcing plates are also installed on the clamping block and are detachably connected to the workpiece body. The clamping stop is connected to the clamping block and to the bearing column.

2. The welding fixture for mining equipment according to claim 1, characterized in that: The clamping stop includes a first constraint block fixed to one of the supporting columns, a second constraint block fixed to another supporting column, and a fastening part. The first constraint block has a second U-shaped opening, and the second constraint block has a pair of first U-shaped openings. The fastening part is connected to the clamping block, and each of them is detachably connected to the first constraint block and the second constraint block.

3. The welding fixture for mining equipment according to claim 2, characterized in that: The fastening part includes a first traction bar, a pair of second traction bars and a pair of stop bars. The first traction bar and the second traction bar are both rubber strips. The first traction bar is fixedly connected to one end of the clamping block, and the pair of second traction bars are fixedly connected to the other end of the clamping block. The first traction bar passes through the pair of second traction bars. The pair of stop bars are each fixedly connected to the first traction bar and the second traction bar. The pair of stop bars are also detachably connected to the first constraint block and the second constraint block.

4. The welding fixture for mining equipment according to claim 1, characterized in that: The support bar has a through opening, in which a movable column is movably installed. The movable column passes through the support seat and is also movably connected to the support seat. Constraint strips are fixed to the wall of the movable column, and each constraint strip is movably connected to the support seat and the through opening. An interlocking constraint part is installed at the end of the movable column, and the interlocking constraint part is detachably connected to the arched plate.

5. The welding fixture for mining equipment according to claim 4, characterized in that: The interlocking constraint part includes a movable tube fixed to the movable column, a triangular block fixed to the movable end of the movable tube, and an arched piece movably connected to the triangular block. The triangular block is located in the middle of a pair of opposite arched pieces. An arched opening is reserved on the upper wall of the triangular block, and the arched opening is tightly connected to the workpiece body.

6. The welding fixture for mining equipment according to claim 1, characterized in that: The docking base includes a base plate, one side of which is fixed to a motor. A slide is reserved at the upper end of the base plate, and a lead screw is screwed into the slide. The threads at both ends of the lead screw turn in opposite directions. The rotating part of the motor is connected to one end of the lead screw, and the two ends of the lead screw are connected to sliders. The sliders can slide in the slide and are fixed to a hydraulic cylinder.

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