Clamping device for welding machine

Abstract

The clamping device for the welding machine comprises a clamping piece and a driving mechanism, and the clamping piece is used for clamping a pipe; the driving mechanism is used for driving the clamping piece to rotate and comprises a rotating shaft and a double-curved-surface speed reducer, and the double-curved-surface speed reducer is connected with the clamping piece through the rotating shaft; a transition piece is arranged between the double-curved-surface speed reducer and the clamping piece, the rotating shaft is sleeved with the transition piece, and the transition piece is used for providing axial supporting force for the double-curved-surface speed reducer. According to the double-curved-surface speed reducer, the structure is simple, and the manufacturing cost is low; the transition piece is arranged between the double-curved-surface speed reducer and the clamping piece, so that axial supporting force is provided for the double-curved-surface speed reducer, the double-curved-surface speed reducer can stably transmit driving force, and the transmission precision is improved; when maintenance is needed, the hyperboloid speed reducer can be disconnected from the clamping piece and the filtering piece only by dismounting the rotating shaft, so that the dismounting and mounting structure of the hyperboloid speed reducer and the clamping piece is simple, and the maintenance cost is reduced.

Description

Technical Field

[0001] This application relates to the field of welding equipment technology, and specifically to a clamping device for a welding machine. Background Technology

[0002] In welding machines, when welding metal pipes, a clamping device is required to hold the pipes to ensure their stability and facilitate welding with the welding torch. The clamping device is usually equipped with a rotating mechanism to rotate the clamped pipes, allowing the welding torch to weld different positions on the pipes.

[0003] However, in the existing clamping devices, most of the rotating mechanisms use planetary reducers. The structure of planetary reducers is too complex, the manufacturing cost is high, and the maintenance cost is too high. During installation, the output shaft is directly connected to the rotating gear of the clamping device. When disassembly is required, the rotating gear must be removed together, which makes disassembly difficult, the maintenance process is relatively complicated, and the maintenance cost is high.

[0004] Therefore, there is room for further improvement in the existing pipe clamping devices used during welding. Utility Model Content

[0005] In view of this, and in response to the technical problems of complex disassembly and assembly and high maintenance costs of the transmission mechanism in the clamping device of the prior art, this application provides a clamping device for welding machines, which adopts a hyperboloid reducer in its transmission mechanism, which is simple to disassemble and assemble, convenient to maintain and has low maintenance costs.

[0006] This application provides a clamping device for a welding machine, comprising:

[0007] Clamping components, used to clamp pipes;

[0008] A drive mechanism for driving the clamping member to rotate includes a rotating shaft and a hyperboloid reducer, wherein the hyperboloid reducer is connected to the clamping member via the rotating shaft;

[0009] A transition piece is provided between the hyperboloid reducer and the clamping member. The transition piece is sleeved on the rotating shaft and is used to provide axial support force for the hyperboloid reducer.

[0010] Compared with the prior art, the welding machine clamping device of this application is equipped with a clamping component to hold the pipe and a drive mechanism to drive the clamping component to rotate, thereby rotating the pipe so that the pipe can be rotated to a suitable angle for welding. The drive mechanism includes a hyperboloid reducer and a rotating shaft. The hyperboloid reducer has a simple structure, low manufacturing cost, and is easy to maintain. A transition component is provided between the hyperboloid reducer and the clamping component. By providing the transition component between the hyperboloid reducer and the clamping component, the transition component provides axial support force to the hyperboloid reducer, so that the hyperboloid reducer can stably transmit the driving force, and the clamping component can rotate stably, thereby improving the transmission accuracy. When maintenance is required, it is only necessary to disconnect the connection between the transition component and the clamping component, so that the hyperboloid reducer, rotating shaft, and transition component can be removed from the clamping component together. The disassembly and assembly structure is simple, thereby reducing maintenance costs.

[0011] Preferably, the clamping member includes a clamping cylinder, a clamping plate, and a transmission assembly, wherein the transmission assembly is disposed between the clamping cylinder and the clamping plate;

[0012] The clamping plate is fixedly connected to the transition piece, and the rotating shaft passes through the clamping plate and is connected to the transmission assembly.

[0013] The transmission component is connected to the clamping cylinder to drive the clamping cylinder to rotate.

[0014] In this embodiment, the transmission component is connected to the clamping cylinder and the transmission component is connected to the rotating shaft. The hyperboloid reducer transmits rotational power to the clamping cylinder through the rotating shaft, thereby driving the clamping cylinder to rotate. The transition piece is fixedly connected to the clamping plate, thereby providing axial support force to the hyperboloid reducer to ensure the stability during transmission.

[0015] Preferably, the transition member includes a fixed sleeve and a bearing, wherein the fixed sleeve is fixedly sleeved on the bearing, and the bearing is fixedly sleeved on the rotating shaft;

[0016] Along the axial direction, one end of the fixed sleeve is fixedly connected to the clamping plate, and the other end is fixedly connected to the hyperboloid reducer.

[0017] In this embodiment, the fixing sleeve is fixed to the bearing. The fixing sleeve can be fixed to the clamping part and the reducer, thereby ensuring the fixation of the reducer relative to the clamping part. The bearing can rotate relative to the fixing sleeve and the rotating shaft, so as to ensure that the hyperboloid reducer and the clamping plate can be relatively stable, while ensuring the rotation of the rotating shaft, thereby ensuring the rotation transmission of the rotating shaft to the transmission component.

[0018] Preferably, the fixed sleeve includes a fixed plate and a support cylinder, the support cylinder is axially connected to the fixed plate, the fixed plate is connected to the clamping member, and the support cylinder is connected to the hyperboloid reducer;

[0019] The fixing plate is provided with mounting holes for mounting bearings, and the support cylinder is coaxially arranged with the mounting holes.

[0020] In this embodiment, the support cylinder has an increased axial length to support the hyperboloid reducer and the clamping plate, thereby improving the stability of the hyperboloid reducer.

[0021] Preferably, the support cylinder is provided with a first fixing hole that penetrates through the axis, and the hyperboloid reducer is provided with a first mating hole. The first fixing hole and the first mating hole are coaxially arranged to allow the same connecting piece to be inserted.

[0022] The fixing plate is provided with a second fixing hole, and the clamping plate is provided with a second mating hole. The first fixing hole and the second mating hole are coaxially arranged to allow the same connector to be inserted.

[0023] In this embodiment, the support cylinder and the hyperboloid reducer can be fixedly connected by a connector, and the fixed plate and the clamping plate can be fixedly connected by a connector, thereby enabling the hyperboloid reducer to be fixedly connected to the clamping plate to ensure the rotational stability of the shaft.

[0024] Preferably, the rotating shaft is provided with a first mounting part, a second mounting part and a third mounting part, which are arranged sequentially along the axial direction;

[0025] The first mounting part is used to install the hyperboloid reducer, the second mounting part is used to install the bearing, and the third mounting part is used to install the transmission assembly.

[0026] In this embodiment, three mounting parts are provided to install the hyperboloid reducer, bearings, and transmission components respectively, so as to ensure the independent installation of each component.

[0027] Preferably, the rotating shaft is further provided with a limiting part, which is located between the first mounting part and the second mounting part;

[0028] Wherein, the outer diameter of the first mounting part is R1, the outer diameter of the second mounting part is R2, the outer diameter of the third mounting part is R3, the outer diameter of the limiting part is R, and R>R2, R>R1, R2>R3.

[0029] In this embodiment, a limiting part is provided, the outer diameter of which is larger than that of the first mounting part and the second mounting part, thereby limiting the hyperboloid reducer mounted on the first mounting part and the bearing mounted on the second mounting part to avoid misalignment and ensure stability.

[0030] Preferably, the transmission assembly includes a drive wheel and a geared disc, the geared disc being fixedly connected to the clamp, and the drive wheel meshing with the geared disc;

[0031] The rotating shaft is connected to the drive wheel, and the rotating shaft rotates to drive the clamping cylinder to rotate.

[0032] In this embodiment, a toothed disc and a drive wheel are provided. The drive wheel meshes with the toothed disc, the drive wheel is fixedly connected to the rotating shaft, and the toothed disc is fixedly connected to the clamping cylinder. The rotation of the drive wheel drives the clamping cylinder to rotate, thereby causing the clamping component to rotate.

[0033] Preferably, the clamping member further includes a clamping block, which is disposed on the side of the clamping cylinder away from the gear plate;

[0034] There are at least two clamping blocks, which are arranged along the diameter of the clamping cylinder;

[0035] The clamping block is capable of moving radially.

[0036] In this embodiment, by setting clamping blocks, the clamping blocks can be displaced radially, thereby adjusting the size of the clamping grooves formed between the clamping blocks, so that the clamping member can clamp pipes of different diameters and increase the clamping range of the clamping member.

[0037] Preferably, it further includes an adjustment mechanism connected to the clamping member, the adjustment mechanism being capable of adjusting the tilt angle of the clamping member.

[0038] In this embodiment, the tilt angle of the clamping member can be adjusted by the adjustment mechanism, so that the clamping member can be tilted to facilitate the installation of pipes or the welding of pipes, thereby improving the flexibility of the clamping device. Attached Figure Description

[0039] Figure 1 This is a three-dimensional structural schematic diagram of a clamping device for a welding machine provided in an embodiment of this application;

[0040] Figure 2 This is a front view structural schematic diagram of a clamping device for a welding machine provided in an embodiment of this application;

[0041] Figure 3 This is a cross-sectional structural schematic diagram of a clamping device for a welding machine provided in an embodiment of this application;

[0042] Figure 4 yes Figure 1 A magnified view of part A;

[0043] Figure 5 yes Figure 3 A magnified view of part B;

[0044] Figure 6 This is a three-dimensional structural schematic diagram of a support cylinder provided in an embodiment of this application;

[0045] Figure 7This is a three-dimensional structural diagram of a rotating shaft provided in an embodiment of this application.

[0046] Reference numerals: 1. Clamping device for welding machine;

[0047] 11. Clamping component; 12. Drive mechanism; 13. Transition component; 14. Adjustment mechanism; 15. Support leg;

[0048] 111. Clamping sleeve; 112. Clamping plate; 113. Transmission assembly; 114. Clamping block; 115. Front panel;

[0049] 1131. Drive wheel; 1132. Gear disc;

[0050] 131. Fixed sleeve; 132. Bearing;

[0051] 1311. Fixing plate; 1312. Support cylinder; 1313. First fixing hole; 1314. Second fixing hole;

[0052] 121. Shaft; 122. Hypoid reducer;

[0053] 1211. First mounting section; 1212. Second mounting section; 1213. Third mounting section; 1214. Limiting section. Detailed Implementation

[0054] To enable those skilled in the art to better understand the technical solutions of this disclosure, the following detailed, clear, and complete description of this disclosure is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this disclosure and are not intended to limit it.

[0055] In the description of this application, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0056] Those skilled in the art should understand that in the disclosure of this application, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this application.

[0057] The present application will now be described in further detail with reference to the accompanying drawings, see below. Figures 1 to 7 illustrate.

[0058] This application provides a clamping device for a welding machine (hereinafter referred to as clamping device 1) for clamping pipes to assist the welding machine in welding the pipes; wherein, the clamping device 1 can drive the pipes to rotate so as to rotate the pipes to a suitable angle for welding by the welding machine.

[0059] Specifically, such as Figures 1 to 5 As shown, the clamping device 1 includes a clamping member 11 and a driving mechanism 12. The clamping member 11 is provided with a clamping hole for clamping the pipe. The driving mechanism 12 is connected to the clamping member 11 and is used to drive the clamping member 11 to rotate. The driving mechanism 12 includes a rotating shaft 121 and a hyperboloid reducer 122. The hyperboloid reducer 122 is connected to the clamping member 11 through the rotating shaft 121 and is connected to a drive motor. The hyperboloid reducer 122 transmits power to the clamping member 11 through the rotating shaft 121 to drive the clamping member 11 to rotate.

[0060] In this application, such as Figure 3 As shown, a transition piece 13 is provided between the hyperboloid reducer 122 and the clamping member 11. The transition piece 13 is sleeved on the rotating shaft 121. One end of the transition piece 13 is connected to the hyperboloid reducer 122, and the other end is connected to the clamping member 11, thereby providing support between the hyperboloid reducer 122 and the clamping member 11, providing axial support force for the hyperboloid reducer 122, thus ensuring the stability of the hyperboloid reducer 122 and the stable transmission of the rotating shaft 121.

[0061] In this embodiment, the hyperboloid reducer 122 has a simple structure, low manufacturing cost, and is easy to maintain. A transition member 13 is provided between the hyperboloid reducer 122 and the clamping member 11. By providing the transition member 13, the transition member 13 acts between the hyperboloid reducer 122 and the clamping member 11, thereby providing axial support force to the hyperboloid reducer 122, so that the hyperboloid reducer 122 can stably transmit driving force, so that the clamping member 11 can rotate stably, thereby improving transmission accuracy. When maintenance is required, only the rotating shaft 121 needs to be removed, which can disconnect the hyperboloid reducer 122 from the clamping member 11 and the filter element, making the disassembly and assembly of the hyperboloid reducer 122 and the clamping member 11 simple, thereby reducing maintenance costs.

[0062] Furthermore, such as Figures 1 to 3As shown, the clamping component 11 includes a clamping cylinder 111, a clamping plate 112, and a transmission assembly 113. The clamping cylinder 111 has an overall cylindrical structure, with one side of the clamping cylinder 111 being the pipe mounting side and the other side of the clamping cylinder 111 being connected to the drive mechanism 12. The clamping cylinder 111 is connected to the transmission assembly 113, and the transmission assembly 113 is connected to the clamping cylinder 111. The drive mechanism 12 is connected to the clamping cylinder 111 through the transmission assembly 113, thereby driving the clamping cylinder 111 to rotate. The clamping plate 112 is located on the side of the clamping cylinder 111 closest to the drive mechanism 12. The clamping plate 112 is used to shield the transmission assembly 113 to prevent external dust and impurities from entering the transmission assembly 113. The clamping plate 112 has a through hole for the rotating shaft 121 to pass through, and the rotating shaft 121 passes through the through hole and connects to the transmission assembly 113.

[0063] Specifically, the transmission assembly 113 will be further described; such as Figure 3 , Figure 5 As shown, the transmission assembly 113 includes a drive wheel 1131 and a gear disc 1132. The gear disc 1132 has a ring structure and a rack is provided on the outer side of the gear disc 1132. The gear disc 1132 is coaxially arranged with the clamping cylinder 111. The inner diameter of the gear disc 1132 is the same as the inner and outer diameter of the clamping hole of the clamping cylinder 111, so as to allow the same tube to be inserted.

[0064] The gear plate 1132 and the clamping cylinder 111 are fixedly connected by bolts or other means. The drive wheel 1131 is located at the lower left corner of the gear plate 1132 and meshes with the gear plate 1132. The rotating shaft 121 passes through the through hole of the clamping plate 112 and is fixedly connected to the drive wheel 1131. The rotating shaft 121 can drive the drive wheel 1131 to rotate, and the drive wheel 1131 drives the gear plate 1132 to rotate, thereby realizing the rotation of the clamping cylinder 111.

[0065] Furthermore, such as Figure 1 , Figure 2As shown, the clamping member 11 also includes a front panel 115, which is axially spaced from the clamping plate 112. A space for mounting the transmission assembly 113 is formed between the clamping plate 112 and the front panel 115. A clamping cylinder 111 is disposed on the front side of the front panel 115 and is rotatably connected to the front panel 115, meaning the clamping cylinder 111 can rotate relative to the front panel 115. Correspondingly, the front panel 115 also has a through hole of the same size as the clamping hole and coaxially arranged for the pipe to pass through. The drive wheel 1131 and the gear disc 1132 are also included. The gear plate 1132 is rotatably connected to the front panel 115 on the side opposite to the clamping cylinder 111, the drive wheel 1131 is rotatably connected to the front panel 115, and the clamping plate 112 is fixedly connected to the front panel 115. That is, the transmission component 113 and the clamping cylinder 111 can rotate relative to the clamping plate 112 and the front panel 115. The clamping plate 112 and the front panel 115 are used to provide installation space and support for the clamping cylinder 111 and the transmission component 113, ensuring that the clamping device 1 can clamp the pipe and drive the pipe to rotate.

[0066] Furthermore, such as Figure 1 , Figure 2 As shown, the clamping device 1 also includes support legs 15, which are disposed on both sides of the clamping member 11 for raising and supporting the clamping member 11.

[0067] Furthermore, such as Figure 2 As shown, the clamping member 11 also includes a clamping block 114. The clamping block 114 is disposed on the side of the clamping cylinder 111 away from the toothed disc 1132. The clamping block 114 is a block structure, and there are at least two clamping blocks 114. The clamping blocks 114 are arranged along the diameter of the clamping cylinder and are arranged around the circumference of the clamping hole. The clamping blocks 114 face the center of the clamping hole. The ends of the multiple clamping blocks 114 near the center of the clamping hole form a circular clamping ring. When the pipe is inserted into the clamping hole, it is clamped by the clamping block 114, which can improve the clamping stability of the pipe.

[0068] The clamping block 114 can move radially to change the size of the clamping ring. Then, according to the pipe diameter, the displacement of the clamping block 114 can be adjusted to clamp pipes of different diameters.

[0069] In this embodiment, as Figure 2 As shown, there are three clamping blocks 114, which are axially equidistant.

[0070] Furthermore, the transition piece 13 is described in more detail; such as... Figure 3 , Figures 5 to 7As shown, the transition piece 13 includes a fixed sleeve 131 and a bearing 132. The fixed sleeve 131 is fitted onto the bearing 132, and the bearing 132 is fitted onto the rotating shaft 121. In the axial direction, the length of the bearing 132 is less than the length of the fixed sleeve 131. The inner ring of the bearing 132 is fixedly connected to the rotating shaft 121, and the outer ring of the bearing 132 is fixedly connected to the fixed sleeve 131. When the rotating shaft 121 drives the inner ring of the bearing 132 to rotate, the fixed sleeve 131 will not rotate. By setting the bearing 132, the rotating shaft 121 can be supported perpendicular to the axial direction in the transition section, so that the rotating shaft 121 is not easy to wobble when rotating, and can ensure good transmission accuracy.

[0071] like Figures 3 to 6 As shown, the fixed sleeve 131 includes a fixed plate 1311 and a support sleeve 1312. The support sleeve 1312 has a cylindrical structure, and the fixed plate 1311 has a plate structure. The support sleeve 1312 and the fixed plate 1311 are axially fixedly connected. The fixed plate 1311 is provided with a mounting hole for mounting the bearing 132. The outer diameter of the mounting hole is smaller than the outer diameter of the bearing 132, so that the bearing 132 and the fixed plate 1311 are interference-fitted to realize the connection between the bearing 132 and the sleeve. It should be noted that the support sleeve 1312 is coaxially arranged with the mounting hole, and the inner diameter of the support sleeve 1312 is larger than the inner diameter of the mounting hole, so that there is a gap between the outer wall of the rotating shaft 121 and the inner wall of the support sleeve 1312. This reduces the material used in the support sleeve 1312, saves manufacturing costs, and also allows for heat dissipation, preventing the rotating shaft 121 from overheating.

[0072] Among them, such as Figure 6 As shown, the support cylinder 1312 is provided with an axially penetrating first fixing hole 1313, and the hyperboloid reducer 122 is provided with a first mating hole. The first fixing hole 1313 and the first mating hole are coaxially arranged. The inner diameter of the first fixing hole 1313 is larger than the inner diameter of the first mating hole. The first fixing hole 1313 and the first mating hole are mated to allow the same connecting piece to be inserted, thereby realizing the connection between the hyperboloid reducer 122 and the support cylinder 1312.

[0073] like Figure 6 As shown, the fixing plate 1311 is provided with a second fixing hole 1314, which is arranged around the support sleeve and is elongated; the clamping member 11 is provided with a second mating hole, and the first fixing hole 1313 and the second mating hole are coaxially arranged to allow the same connecting member to be inserted, so as to realize the connection between the fixing plate 1311 and the clamping member 11.

[0074] In practical use, such as Figure 3 , Figure 5As shown, first, the support cylinder 1312 is fixed to the hyperboloid reducer 122, and then the fixing plate 1311 is fixed to the clamping plate 112. The installation of the two is in the opposite direction. When disassembling, first remove the lock between the fixing plate 1311 and the clamping plate 112, and then pull out the hyperboloid reducer, the rotating shaft 121, and the transition piece 13 together to disassemble the drive mechanism 12 and the clamping piece 11. This disassembly and assembly method is simple and quick, and the subsequent maintenance cost is greatly reduced.

[0075] Furthermore, the rotating shaft 121 is described in more detail; such as Figure 5 , Figure 7 As shown, the rotating shaft 121 includes a first mounting portion 1211, a second mounting portion 1212, and a third mounting portion 1213. The first mounting portion 1211, the second mounting portion 1212, and the third mounting portion 1213 are arranged sequentially along the axial direction. The first mounting portion 1211 is used to mount the hyperboloid reducer 122, the second mounting portion 1212 is used to mount the bearing 132, and the third mounting portion 1213 is used to mount the drive wheel 1131. As shown... Figure 5 As shown, the first mounting part 1211 extends outward from the hyperboloid reducer 122 in a direction away from the second mounting part 1212. Its outer end is connected to a limiting member, which is sleeved on the first mounting part 1211. The limiting member has a large outer diameter, thereby limiting the first mounting part 1211 and the hyperboloid reducer 122 so that the first mounting part 1211 will not come off the hyperboloid reducer 122.

[0076] like Figure 7 As shown, the rotating shaft 121 is also provided with a limiting part 1214, which is located between the first mounting part 1211 and the second mounting part 1212. The outer diameter of the first mounting part 1211 is R1, the outer diameter of the second mounting part 1212 is R2, the outer diameter of the third mounting part 1213 is R3, and the outer diameter of the limiting part 1214 is R. R>R2, R>R1, R2>R3, that is, the outer diameter of the limiting part 1214 is larger. It forms a limiting step at the connection between the limiting part 1214 and the first mounting part 1211 and the second mounting part 1212 to prevent the hyperboloid reducer 122 or the bearing 132 from sliding axially on the rotating shaft 121.

[0077] The outer diameter of the second mounting part 1212 is larger than the outer diameter of the third mounting part 1213, so that a limiting step is formed at the connection between the second mounting part 1212 and the third mounting part 1213, so that the drive wheel 1131 mounted on the third mounting part 1213 will not move toward the second mounting part 1212.

[0078] Furthermore, such as Figure 7As shown, the first mounting part 1211 is provided with a first keyway, and the third mounting part 1213 is provided with a second keyway. Both the first keyway and the second keyway are elongated and recessed towards the center of the rotating shaft 121. The length extension directions of the first keyway and the second keyway are parallel. The first keyway and the second keyway are used to place connecting keys to increase the connection between the first mounting part 1211 and the hyperboloid reducer 122, and the connection between the third mounting part 1213 and the drive wheel 1131.

[0079] Specifically, in actual installation, such as Figure 5 , Figure 7 As shown, firstly, the first mounting part 1211 is inserted into the hyperboloid reducer 122. Then, a limiting member is installed on the part of the first mounting part 1211 that protrudes out to the outside of the hyperboloid reducer 122 to lock the rotating shaft 121 and the hyperboloid reducer 122. A limiting step is formed between the first mounting part 1211 and the limiting part 1214 to limit the hyperboloid reducer 122. Under the action of the limiting member and the limiting step, the bidirectional locking between the rotating shaft 121 and the hyperboloid reducer 122 is achieved.

[0080] Then, the bearing 132 is moved toward the first mounting part 1211 so that the transition piece 13 is fitted onto the second mounting part 1212 to achieve the connection between the transition piece 13 and the rotating shaft 121; then, the first fixing hole 1313 and the first mating hole are inserted by bolts or screws to achieve the fixed connection between the transition piece 13 and the hyperboloid reducer 122.

[0081] Next, the drive wheel 1131 is fitted onto the third mounting part 1213, and the drive wheel 1131 and the rotating shaft 121 are passed through the clamping plate 112 together, so that the drive wheel 1131 meshes with the gear plate 1132; the limiting step formed at the connection between the second mounting part 1212 and the third mounting part 1213 forms a one-way limiting lock for the drive wheel 1131; similarly, the end of the rotating shaft 121 and the drive wheel 1131 are provided with limiting members to perform a two-way limiting lock for the drive wheel 1131 and the rotating shaft 121.

[0082] Finally, bolts or screws and other connecting parts are inserted into the second fixing hole 1314 and the second mating hole to achieve a fixed connection between the transition part 13 and the clamping part 11.

[0083] When disassembly is required, only the connecting parts in the second fixing hole 1314 and the second mating hole need to be removed. The entire rotating shaft 121, transition piece 13, hyperboloid reducer 122, and drive wheel 1131 can be removed from the clamping piece 11. The disassembly and assembly are simple and the maintenance cost is low.

[0084] It should be noted that the diameter of the through hole on the clamping plate 112 for the drive wheel 1131 to pass through is larger than the outer diameter of the drive wheel 1131, so that the drive wheel 1131 can pass through the through hole smoothly and achieve engagement or disengagement with the gear plate 1132.

[0085] Based on any of the above embodiments, the clamping device 1 will be further described; such as Figures 1 to 2 As shown, the clamping device 1 also includes an adjustment mechanism 14, which is mounted on the support leg 15. The support leg 15 is connected to the clamping member 11 through the adjustment mechanism 14. The adjustment mechanism 14 can drive the clamping member 11 to rotate, changing the angle between the clamping member 11 and the vertical direction, thereby adjusting the tilt angle of the clamping member 11. This allows the clamping member 11 to tilt to facilitate the installation of pipes or the welding of pipes, improving the flexibility of the clamping device 1.

[0086] In this embodiment, the adjustment mechanism 14 is preferably a two-stage turbine screw structure, which has relatively stable transmission properties, making the rotation of the clamping member 11 more stable.

[0087] It should be noted that the various embodiments of this application can be arbitrarily combined into new embodiments, provided that the solutions do not conflict and the technical solutions can coexist.

[0088] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The descriptions of the embodiments above are only for the purpose of helping to understand the present application and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A clamping device for a welding machine, characterized in that, include: Clamping element (11) is used to clamp the pipe; The drive mechanism (12) is used to drive the clamping member (11) to rotate. It includes a rotating shaft (121) and a hyperboloid reducer (122), which is connected to the clamping member (11) through the rotating shaft (121). A transition piece (13) is provided between the hyperboloid reducer (122) and the clamping member (11). The transition piece (13) is sleeved on the rotating shaft (121) and is used to provide axial support force for the hyperboloid reducer (122).

2. The clamping device for a welding machine according to claim 1, characterized in that, The clamping member (11) includes a clamping cylinder (111), a clamping plate (112), and a transmission assembly (113), wherein the transmission assembly (113) is disposed between the clamping cylinder (111) and the clamping plate (112); The clamping plate (112) is fixedly connected to the transition piece (13), and the rotating shaft (121) passes through the clamping plate (112) and is connected to the transmission assembly (113); The transmission assembly (113) is connected to the clamp (111) to drive the clamp (111) to rotate.

3. The clamping device for a welding machine according to claim 2, characterized in that, The transition piece (13) includes a fixed sleeve (131) and a bearing (132), wherein the fixed sleeve (131) is fixedly sleeved on the bearing (132), and the bearing (132) is fixedly sleeved on the rotating shaft (121); Along the axial direction, one end of the fixed sleeve (131) is fixedly connected to the clamping plate (112), and the other end is fixedly connected to the hyperboloid reducer (122).

4. The clamping device for a welding machine according to claim 3, characterized in that, The fixed sleeve (131) includes a fixed plate (1311) and a support cylinder (1312). The support cylinder (1312) is axially connected to the fixed plate (1311). The fixed plate (1311) is connected to the clamping member (11). The support cylinder (1312) is connected to the hyperboloid reducer (122). The fixing plate (1311) is provided with mounting holes for mounting bearings (132), and the support cylinder (1312) is coaxially arranged with the mounting holes.

5. The clamping device for a welding machine according to claim 4, characterized in that, The support cylinder (1312) is provided with a first fixing hole (1313) that penetrates through the axis, and the hyperboloid reducer (122) is provided with a first mating hole. The first fixing hole (1313) and the first mating hole are coaxially arranged to allow the same connecting piece to be inserted. The fixing plate (1311) is provided with a second fixing hole (1314), and the clamping plate (112) is provided with a second mating hole. The first fixing hole (1313) and the second mating hole are coaxially arranged to allow the same connector to be inserted.

6. The clamping device for a welding machine according to claim 3, characterized in that, The rotating shaft (121) is provided with a first mounting part (1211), a second mounting part (1212) and a third mounting part (1213), which are arranged sequentially along the axial direction; The first mounting part (1211) is used to mount the hyperboloid reducer (122), the second mounting part (1212) is used to mount the bearing (132), and the third mounting part (1213) is used to mount the transmission assembly (113).

7. The clamping device for a welding machine according to claim 6, characterized in that, The rotating shaft (121) is also provided with a limiting part (1214), which is located between the first mounting part (1211) and the second mounting part (1212); Wherein, the outer diameter of the first mounting part (1211) is R1, the outer diameter of the second mounting part (1212) is R2, the outer diameter of the third mounting part (1213) is R3, the outer diameter of the limiting part (1214) is R, and R>R2, R>R1, R2>R3.

8. The clamping device for a welding machine according to claim 2, characterized in that, The transmission assembly (113) includes a drive wheel (1131) and a gear disc (1132), the gear disc (1132) being fixedly connected to the clamp (111), and the drive wheel (1131) meshing with the gear disc (1132); The rotating shaft (121) is connected to the drive wheel (1131), and the rotating shaft (121) rotates to drive the clamp (111) to rotate.

9. The clamping device for a welding machine according to claim 8, characterized in that, The clamping member (11) further includes a clamping block (114), which is disposed on the side of the clamping cylinder (111) away from the gear plate (1132); There are at least two clamping blocks (114), and the clamping blocks (114) are arranged along the radial line of the clamping cylinder (111); The clamping block (114) is capable of moving radially.

10. The clamping device for a welding machine according to claim 1, characterized in that, It also includes an adjustment mechanism (14), which is connected to the clamping member (11) and is capable of adjusting the tilt angle of the clamping member (11).

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