A butt welding fixture for welding an expansion joint

Abstract

The utility model discloses a kind of butt welding clamps for expansion joint welding, including bottom plate, the top of bottom plate is provided with clamping assembly, power assembly is arranged between clamping assembly, clamping assembly includes rotating block, the inside of rotating block is provided with sliding slot, the outside of screw rod is screwed with moving block, hinged link is hinged between moving block and corresponding slider, the outside of screw rod is fixedly installed with knob, the utility model relates to butt welding clamps for expansion joint welding technical field;The butt welding clamp for expansion joint welding is rotated by rotating knob to drive screw rod, to realize the synchronous inward movement of clamping rod, can guarantee that expansion joint is clamped in central position, and when two sides expansion joint are aligned, start electric slide rail to drive track sliding block and right side bottom block to move, can conveniently align the expansion joint clamped on two sides, effectively solve the problem that clamp is difficult to accurately clamp and align expansion joint, improve the efficiency and accuracy of preparation work before welding.

Description

Technical Field

[0001] This utility model relates to the technical field of butt welding fixtures for expansion joint welding, specifically a butt welding fixture for expansion joint welding. Background Technology

[0002] Expansion joint welding fixtures are tools used to clamp and fix multiple expansion joints during welding, thereby maintaining their stable alignment and facilitating the auxiliary welding work of connecting expansion joints.

[0003] Patent publication number "CN219818564U" discloses an expansion joint welding fixture, including a support platform. A first support box is bolted to the right side of the upper part of the support platform. A first mounting shaft is movably embedded in the upper side of the first support box. A stepper motor is bolted to the upper right side of the first support box. A support plate is bolted to one end of the first mounting shaft, and the output shaft of the stepper motor is embedded inside the other end. A movable drive support structure supports the left side above the support platform, and a second support box is supported above the movable drive support structure. A second mounting shaft is movably embedded in the upper side of the second support box. A stepper motor is bolted to the upper left side of the second support box. The output shaft of the stepper motor is embedded at one end of the second mounting shaft, and a support plate is bolted to the other end. The movable drive support structure allows the second support box to move and adjust the distance between it and the first support box, thus accommodating the welding of different types of expansion joints.

[0004] In the aforementioned patent, the expansion joint is clamped and fixed by clamping discs on both sides. However, the position of the clamping discs on both sides is adjusted by screws on both sides. Adjusting each side separately will result in inconsistent adjustment distances on both sides, which means that the expansion joints on both sides may not be aligned after being fixed, thus making normal welding impossible.

[0005] To address these issues, this invention provides a butt welding fixture for welding expansion joints. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a butt welding fixture for welding expansion joints, thus solving the aforementioned problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a butt welding fixture for expansion joint welding, comprising a base plate, a clamping assembly on the top of the base plate, a power assembly between the clamping assemblies, the clamping assembly including a rotating block, a sliding groove inside the rotating block, a limit rod fixedly installed inside the sliding groove, a slider slidably connected to the outside of the limit rod and inside the sliding groove, a clamping rod fixedly installed on the inner end of the slider, a screw rotatably connected to the outside of the rotating block, a moving block screwed to the outside of the screw, a connecting rod hinged between the moving block and the corresponding slider, and a knob fixedly installed on the outside of the screw.

[0008] Preferably, a rotating ring is fixedly installed on the outer side of the rotating block, the clamping assembly further includes a bottom block, a support plate is fixedly installed on the top of the bottom block, and the rotating ring is rotatably connected inside the support plate.

[0009] Preferably, the left bottom block is fixedly installed on the top of the base plate, the right bottom block is slidably connected to the top of the base plate, an electric slide rail is fixedly installed inside the base plate, a track slider is slidably connected inside the electric slide rail, and the track slider is fixedly installed inside the right bottom block.

[0010] Preferably, the power assembly includes a first side plate and a second side plate. The first side plate is fixedly installed on the top of the left bottom block, and the second side plate is fixedly installed on the top of the right bottom block. A first gear is rotatably connected to the inner side of the first side plate, and a second gear is rotatably connected to the inner side of the second side plate. A gear ring is fixedly installed on the outer side of the rotating ring. The left gear ring meshes with the first gear, and the right gear ring meshes with the second gear.

[0011] Preferably, a motor is fixedly installed on the outer end of the first side plate, and the output end of the motor movably passes through the interior of the first side plate and is fixedly connected to the first gear.

[0012] Preferably, a rotating cylinder is fixedly installed on the inner side of the first gear, a movable rod is fixedly installed on the inner side of the second gear, the movable rod is inserted into the rotating cylinder, a support rod is fixedly installed on the top of the base plate, and the rotating cylinder is rotatably connected to the support rod.

[0013] Preferably, the outer cross-section of the movable rod and the inner cross-section of the rotating cylinder are both square.

[0014] Beneficial effects

[0015] This utility model provides a butt welding fixture for welding expansion joints. Compared with the prior art, it has the following advantages:

[0016] 1. This expansion joint welding fixture uses a knob to rotate a screw, which in turn moves the clamping rod inward synchronously, ensuring that the expansion joint is clamped in the center position. When the expansion joints on both sides are aligned, the electric slide rail is activated to move the track slider and the bottom block on the right side, which can easily align the expansion joints clamped on both sides. This effectively solves the problem of the fixture being difficult to accurately clamp and align the expansion joints, and improves the efficiency and accuracy of the preparation work before welding.

[0017] 2. The expansion joint welding fixture is used to weld the expansion joint. After the expansion joint is fixed, the motor is started. The motor drives the first gear to rotate, which drives the second gear to rotate synchronously through the rotating cylinder and the movable rod. This causes the gear rings on both sides to rotate, which in turn drives the rotating ring and the rotating block to rotate, so that the expansion joints on both sides can rotate synchronously. During welding, the position of the expansion joints on both sides can be changed synchronously, so that welding can be carried out in each position. This greatly improves the convenience of welding operation and the uniformity of welding quality. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a perspective view of the external structure of this utility model;

[0020] Figure 2 This is a three-dimensional view of the back structure of this utility model;

[0021] Figure 3 This is a three-dimensional view of the overall side structure of this utility model;

[0022] Figure 4 This is a perspective view of the outer structure of the clamping component of this utility model;

[0023] Figure 5 This is a perspective view of the inner structure of the clamping component of this utility model.

[0024] In the diagram: 1. Base plate; 2. Clamping assembly; 21. Bottom block; 22. Support plate; 23. Electric slide rail; 24. Track slider; 25. Rotating ring; 26. Rotating block; 27. Slide groove; 28. Limiting rod; 29. ​​Slider; 210. Connecting rod; 211. Moving block; 212. Screw; 213. Knob; 214. Clamping rod; 3. Power assembly; 31. First side plate; 32. First gear; 33. Motor; 34. Rotating cylinder; 35. Support rod; 36. Movable rod; 37. Second gear; 38. Gear ring; 39. Second side plate. Detailed Implementation

[0025] It should be noted that in the description of the embodiments of this application, the terms "front," "rear," "left," "right," "up," "down," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this application. The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0026] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0027] Reference Figures 1 to 5 This application provides a butt welding fixture for welding expansion joints, including a base plate 1. A clamping assembly 2 is disposed on the top of the base plate 1, and a power assembly 3 is disposed between the clamping assemblies 2. The clamping assembly 2 includes a rotating block 26, with a sliding groove 27 inside the rotating block 26. A limit rod 28 is fixedly installed inside the sliding groove 27. A slider 29 is slidably connected to the outside of the limit rod 28 and inside the sliding groove 27. A clamping rod 214 is fixedly installed on the inner end of the slider 29. A screw 212 is rotatably connected to the outside of the rotating block 26. A moving block 211 is screwed to the outside of the screw 212. A connecting rod 210 is hinged between the moving block 211 and the corresponding slider 29. A knob 213 is fixedly installed on the outside of the screw 212. A rotating ring 25 is fixedly installed on the outside of the rotating block 26. The clamping assembly 2 also includes a bottom block 21, with a support plate 22 fixedly installed on the top of the bottom block 21. The rotating ring 25 is rotatably connected inside the support plate 22. The left bottom block 21 is fixedly installed on the top of the base plate 1, and the right bottom block 21 is slidably connected to the top of the base plate 1. An electric slide rail 23 is fixedly installed inside the base plate 1, and a track slider 24 is slidably connected inside the electric slide rail 23. The track slider 24 is fixedly installed inside the right bottom block 21.

[0028] In this embodiment, when clamping the expansion joint, the expansion joint is placed inside the clamping rod 214. By rotating the knob 213, the screw 212 is rotated. The rotation of the screw 212 causes the moving block 211 to move along the screw 212. Simultaneously, the corresponding slider 29 is pushed along the slide groove 27 and the limiting rod 28 by the connecting rod 210 on the outside. The moving block 211 is in the center position, thereby realizing that the slider 29 and the clamping rod 214 move inward synchronously. The expansion joint is clamped by the synchronous inward movement of the clamping rod 214, ensuring that the expansion joint can be clamped in the center position. When the two expansion joints are aligned, the electric slide rail 23 is activated to drive the track slider 24 and the bottom block 21 on the right side to move, thereby aligning the two clamped expansion joints together. This solves the problem that the two expansion joints are not easy to align after being fixed.

[0029] Reference Figures 1 to 5 In one aspect of this embodiment, the power assembly 3 includes a first side plate 31 and a second side plate 39. The first side plate 31 is fixedly installed on the top of the left bottom block 21, and the second side plate 39 is fixedly installed on the top of the right bottom block 21. A first gear 32 is rotatably connected to the inner side of the first side plate 31, and a second gear 37 is rotatably connected to the inner side of the second side plate 39. A gear ring 38 is fixedly installed on the outer side of the rotating ring 25. The left gear ring 38 meshes with the first gear 32, and the right gear ring 38 meshes with the second gear 37. A motor 33 is fixedly installed on the outer end of the first side plate 31, and the output end of the motor 33 movably passes through the interior of the first side plate 31 and is fixedly connected to the first gear 32. A rotating cylinder 34 is fixedly installed on the inner side of the first gear 32, and a movable rod 36 is fixedly installed on the inner side of the second gear 37. The movable rod 36 is inserted into the interior of the rotating cylinder 34. A support rod 35 is fixedly installed on the top of the bottom plate 1, and the rotating cylinder 34 is rotatably connected to the interior of the support rod 35. The external cross-section of the movable rod 36 and the internal cross-section of the rotating cylinder 34 are both square.

[0030] In this embodiment, after the expansion joint is fixed, during welding, the motor 33 can be started to drive the first gear 32 to rotate, and the rotating cylinder 34 and the movable rod 36 can drive the second gear 37 to rotate synchronously. The two gears drive the gear rings 38 on both sides to rotate, and the rotation of the gear rings 38 drives the rotating ring 25 and the rotating block 26 to rotate, thereby driving the expansion joints on both sides to rotate synchronously. By rotating the expansion joints on both sides synchronously, the positions of the expansion joints on both sides can be changed synchronously during welding, ensuring that welding can be easily performed at each position. Furthermore, when the bottom block 21 on the right side moves, the movable rod 36 moves inside the rotating cylinder 34, ensuring that the bottom block 21 on the right side can move freely without affecting the mutual transmission of the gears on both sides.

[0031] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0032] Working principle: When clamping the expansion joint, the expansion joint is placed inside the clamping rod 214. Rotating the knob 213 causes the screw 212 to rotate, which in turn moves the moving block 211 along the screw 212. The moving block 211, through the outer connecting rod 210, pushes the corresponding slider 29 to slide along the slide groove 27 and the limiting rod 28. Since the moving block 211 is in the center position, the slider 29 and the clamping rod 214 move inward synchronously, thus clamping the expansion joint. When it is necessary to align the expansion joints on both sides, the electric slide rail 23 is activated. The electric slide rail 23 drives the track slider 24 and the right bottom block 21 fixed on the track slider 24 to move, thereby aligning the expansion joints clamped on both sides. During welding, the electric slide rail 23 is activated. The output of the motor 33 drives the first gear 32 to rotate, and the rotating cylinder 34 fixed inside the first gear 32 rotates accordingly. The rotating cylinder 34 drives the movable rod 36 inserted inside it to rotate, and the movable rod 36 drives the second gear 37 to rotate. The first gear 32 meshes with the left toothed ring 38, and the second gear 37 meshes with the right toothed ring 38. The rotation of the two gears drives the toothed rings 38 on both sides to rotate, and the rotation of the toothed rings 38 drives the rotating ring 25 and the rotating block 26 on the rotating ring 25 to rotate. Finally, the expansion joints on both sides rotate synchronously to facilitate welding at various positions of the expansion joints. During the movement of the bottom block 21 on the right side, the movable rod 36 moves inside the rotating cylinder 34 to ensure that the movement of the bottom block 21 on the right side does not affect the transmission of the gears on both sides.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A butt welding fixture for welding expansion joints, comprising a base plate (1), characterized in that: A clamping assembly (2) is provided on the top of the base plate (1), and a power assembly (3) is provided between the clamping assemblies (2). The clamping assembly (2) includes a rotating block (26). A sliding groove (27) is provided inside the rotating block (26). A limit rod (28) is fixedly installed inside the sliding groove (27). A slider (29) is slidably connected to the outside of the limit rod (28) and inside the sliding groove (27). A clamping rod (214) is fixedly installed on the inner end of the slider (29). A screw (212) is rotatably connected to the outside of the rotating block (26). A moving block (211) is screwed to the outside of the screw (212). A connecting rod (210) is hinged between the moving block (211) and the corresponding slider (29). A knob (213) is fixedly installed on the outside of the screw (212).

2. The butt welding fixture for welding expansion joints according to claim 1, characterized in that: A rotating ring (25) is fixedly installed on the outside of the rotating block (26). The clamping assembly (2) also includes a bottom block (21). A support plate (22) is fixedly installed on the top of the bottom block (21). The rotating ring (25) is rotatably connected inside the support plate (22).

3. The butt welding fixture for welding expansion joints according to claim 2, characterized in that: The left bottom block (21) is fixedly installed on the top of the base plate (1), and the right bottom block (21) is slidably connected to the top of the base plate (1). An electric slide rail (23) is fixedly installed inside the base plate (1), and a track slider (24) is slidably connected inside the electric slide rail (23). The track slider (24) is fixedly installed inside the right bottom block (21).

4. The butt welding fixture for welding expansion joints according to claim 3, characterized in that: The power assembly (3) includes a first side plate (31) and a second side plate (39). The first side plate (31) is fixedly installed on the top of the left bottom block (21), and the second side plate (39) is fixedly installed on the top of the right bottom block (21). The inner side of the first side plate (31) is rotatably connected to a first gear (32), and the inner side of the second side plate (39) is rotatably connected to a second gear (37). The outer side of the rotating ring (25) is fixedly installed with a toothed ring (38). The left toothed ring (38) meshes with the first gear (32), and the right toothed ring (38) meshes with the second gear (37).

5. A butt welding fixture for welding expansion joints according to claim 4, characterized in that: A motor (33) is fixedly installed on the outer end of the first side plate (31). The output end of the motor (33) moves through the inside of the first side plate (31) and is fixedly connected to the first gear (32).

6. A butt welding fixture for welding expansion joints according to claim 5, characterized in that: A rotating cylinder (34) is fixedly installed on the inner side of the first gear (32), and a movable rod (36) is fixedly installed on the inner side of the second gear (37). The movable rod (36) is inserted into the rotating cylinder (34). A support rod (35) is fixedly installed on the top of the base plate (1), and the rotating cylinder (34) is rotatably connected to the support rod (35).

7. A butt welding fixture for welding expansion joints according to claim 6, characterized in that: The outer cross-section of the movable rod (36) and the inner cross-section of the rotating cylinder (34) are both square.

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