Spot welding equipment for joints at two ends of steel pipe

Abstract

The utility model discloses spot welding equipment for joints at two ends of a steel pipe, which comprises an equipment body, a fixed bottom frame, a lifting adjusting box, a balance rod, a movable bottom frame, a clamping frame, a conveying frame, a screw rod motor and a spot welding end head, the fixed bottom frame is arranged on the outer side of the equipment body, and the fixed bottom frame is fixedly connected with the equipment body; and a lifting adjusting box is arranged below the fixed bottom frame. According to the spot welding equipment for the joints at the two ends of the steel pipe, after the position of the steel pipe is fixed, an external annular plate is rotated to drive a movable rotating frame to rotate, through threaded connection between the movable rotating frame and a lifting threaded rod, the lifting threaded rod is driven to ascend, the lifting threaded rod pushes a movable bottom frame to move upwards, and the movable bottom frame stably moves upwards under the limitation of a balance rod; the movable bottom frame and the steel pipes are integrally lifted till the two steel pipes are in butt joint, and finally spot welding operation is conducted through the spot welding end.

Description

Technical Field

[0001] The utility model relates to the technical field of welding, in particular to a spot welding device for joints at both ends of a steel pipe. Background Art

[0002] In the process of using steel pipes, sometimes because the length of the steel pipe is not enough, it is necessary to weld two steel pipes to extend the length of the steel pipe for use. However, in the process of butt welding two steel pipes, some problems are found:

[0003] When two steel pipes are welded without manual assistance, the steel pipes are prone to displacement during the welding process, which not only increases the difficulty of the welding process, but also causes the two steel pipes to be unable to be perfectly butted after welding. Utility Model Content

[0004] The utility model aims to provide a spot welding device for joints at both ends of a steel pipe, so as to solve the problem in the background technology that the steel pipe is easily offset during welding and the steel pipe cannot be perfectly butted.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a spot welding device for joints at both ends of a steel pipe, comprising a device body, a fixed bottom frame, a lifting adjustment box, a balance bar, a movable bottom frame, a clamping frame, a conveying frame, a screw motor and a spot welding end. A fixed bottom frame is arranged on the outside of the device body, and the fixed bottom frame is fixedly connected to the device body. A lifting adjustment box is arranged below the fixed bottom frame, a balance bar is arranged on the outside of the lifting adjustment box, a movable bottom frame is arranged above the fixed bottom frame, a clamping frame is arranged on the movable bottom frame, a spot welding end is arranged above the clamping frame, a conveying frame is arranged above the spot welding end, and a screw motor is arranged above the conveying frame;

[0006] The clamping frame comprises a bottom half frame, a top half frame, a locking screw and an adjusting bracket. The top half frame is arranged above the bottom half frame, a locking screw is arranged at one end of the top half frame, and an adjusting bracket is arranged on the locking screw.

[0007] Preferably, the lifting and adjusting box includes a fixed base, a movable rotating frame, a limit ring plate, an external ring plate and a lifting threaded rod. A movable rotating frame is provided above the fixed base, a limit ring plate is fixedly installed on the top of the fixed base, an external ring plate is provided on the outside of the movable rotating frame, and a lifting threaded rod is provided inside the movable rotating frame.

[0008] Preferably, the adjustment bracket includes a bracket top plate, a bracket adjustment rod, a bracket bottom plate, a bracket connecting rod and a gasket, a bracket adjustment rod is provided inside the bracket top plate, the bottom end of the bracket adjustment rod is movably mounted on the bracket bottom plate, bracket connecting rods are provided on both sides of the bracket adjustment rod, and a gasket is provided at the bottom end of the bracket bottom plate.

[0009] Preferably, the top end of the bracket connecting rod is fixedly connected to the bracket top plate, the bottom end of the bracket connecting rod is fixedly connected to the bracket bottom plate, and the two bracket connecting rods on both sides of the bracket adjusting rod are parallel to each other.

[0010] Preferably, the movable rotating frame is nested on the limiting ring plate, and the limiting ring plate and the movable rotating frame are movably connected. At the same time, an internal thread is provided on the inner wall of the movable rotating frame, and the movable rotating frame is threadedly connected to the lifting threaded rod.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] The utility model discloses a spot welding device for joints at both ends of a steel pipe. The device places two steel pipes into a bottom half frame respectively, and makes one end of the two steel pipes contact with each other. After closing the top half frame, a locking screw is used to lock and fix the two steel pipes. Then, a bracket adjusting rod is rotated to push a bracket bottom plate and a gasket close to the steel pipe, so that the steel pipe is clamped and fixed. Then, an external ring plate is rotated to drive a movable rotating frame to rotate synchronously. The lifting threaded rod rises in the movable rotating frame. The lifting threaded rod pushes the movable bottom frame to rise during the rising process, and adjusts the butt joint height between the two steel pipes during the rising process, so that the two steel pipes are stably butted. When the steel pipes are clamped and fixed, spot welding is performed on the butt joint of the two steel pipes through a spot welding end, so that the two steel pipes can be perfectly butted and then welded. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view of the utility model as a whole;

[0014] Figure 2 It is a cross-sectional view of the lifting and adjusting box of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the clamping frame of the utility model;

[0016] Figure 4 It is a cross-sectional view of the adjusting bracket of the utility model.

[0017] In the figure: 1. Equipment body; 2. Fixed bottom frame; 3. Lifting adjustment box; 31. Fixed base; 32. Movable rotating frame; 33. Limiting ring plate; 34. External ring plate; 35. Lifting threaded rod; 4. Balance rod; 5. Movable bottom frame; 6. Clamping frame; 61. Bottom half frame; 62. Top half frame; 63. Locking screw; 64. Adjustment bracket; 641. Bracket top plate; 642. Bracket adjustment rod; 643. Bracket bottom plate; 644. Bracket connecting rod; 645. Gasket; 7. Conveying frame; 8. Screw motor; 9. Spot welding end. Implementation

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the implementation regulations described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-4 A spot welding device for joints at both ends of a steel pipe comprises a device body 1, a fixed bottom frame 2, a lifting adjustment box 3, a balancing rod 4, a movable bottom frame 5, a clamping frame 6, a conveying frame 7, a screw motor 8 and a spot welding end 9. A fixed bottom frame 2 is arranged on the outside of the device body 1, and the fixed bottom frame 2 is fixedly connected to the device body 1. A lifting adjustment box 3 is arranged below the fixed bottom frame 2, a balancing rod 4 is arranged on the outside of the lifting adjustment box 3, a movable bottom frame 5 is arranged above the fixed bottom frame 2, the balancing rod 4 is movably inserted in the movable bottom frame 5, a clamping frame 6 is arranged on the movable bottom frame 5, a spot welding end 9 is arranged above the clamping frame 6, a conveying frame 7 is arranged above the spot welding end 9, and a conveying frame 7 is arranged above the conveying frame 7. There is a screw motor 8, which can drive the spot welding end 9 and its conveying frame 7 to descend through the screw, and in the process of the spot welding end 9 descending, the limit frames on both sides of the conveying frame 7 limit the conveying frame 7. The clamping frame 6 includes a bottom half frame 61, a top half frame 62, a locking screw 63 and an adjusting bracket 64. A top half frame 62 is provided above the bottom half frame 61, a locking screw 63 is provided at one end of the top half frame 62, and the other end of the top half frame 62 is movably connected to the bottom half frame 61. The locking screw 63 can lock the bottom half frame 61 and the top half frame 62. An adjusting bracket 64 is provided on the locking screw 63, and the adjusting bracket 64 limits the steel pipe.

[0020] Furthermore, the lifting and adjusting box 3 includes a fixed base 31, a movable rotating frame 32, a limiting ring plate 33, an external ring plate 34 and a lifting threaded rod 35. A movable rotating frame 32 is provided above the fixed base 31, and a limiting ring plate 33 is fixedly installed on the top of the fixed base 31. An external ring plate 34 is provided on the outer side of the movable rotating frame 32. The external ring plate 34 is controlled to realize the rotation of the movable rotating frame 32. A lifting threaded rod 35 is provided inside the movable rotating frame 32. The top end of the lifting threaded rod 35 is movably inserted in the movable bottom frame 5. When the lifting threaded rod 35 is lifted or lowered, it drives the movable bottom frame 5 to realize the lifting effect.

[0021] Furthermore, the adjustment bracket 64 includes a bracket top plate 641, a bracket adjustment rod 642, a bracket bottom plate 643, a bracket connecting rod 644 and a gasket 645. A bracket adjustment rod 642 is provided inside the bracket top plate 641. The bottom end of the bracket adjustment rod 642 is movably mounted on the bracket bottom plate 643. The bottom end of the bracket adjustment rod 642 can rotate freely in the bracket bottom plate 643. The bracket adjustment rod 642 can rotate freely inside the bracket top plate 641 by rotating the limit plate. Bracket connecting rods 644 are provided on both sides of the bracket adjustment rod 642. A gasket 645 is provided at the bottom end of the bracket bottom plate 643. The gasket 645 is made of rubber material and is arranged in an arc shape to protect the steel pipe.

[0022] Furthermore, the top end of the bracket connecting rod 644 is fixedly connected to the bracket top plate 641, the bottom end of the bracket connecting rod 644 is fixedly connected to the bracket bottom plate 643, and the two bracket connecting rods 644 on both sides of the bracket adjustment rod 642 are parallel to each other, and the bracket adjustment rod 642 is threadedly connected to the top half frame 62. Rotating the bracket adjustment rod 642 can move the bracket adjustment rod 642 and the bracket connecting rod 644 on the top half frame 62.

[0023] Furthermore, the movable rotating frame 32 is nested on the limiting ring plate 33, the movable rotating frame 32 is movably connected to the fixed base 31, and the limiting ring plate 33 is movably connected to the movable rotating frame 32, the movable rotating frame 32 rotates around the limiting ring plate 33, and at the same time, an internal thread is provided on the inner wall of the movable rotating frame 32, and the movable rotating frame 32 is threadedly connected to the lifting threaded rod 35. When the movable rotating frame 32 rotates, the lifting threaded rod 35 can be raised and lowered.

[0024] Working principle: The utility model is a spot welding device for the joints at both ends of a steel pipe. When in use, two steel pipes are placed in the bottom half frames 61 on the two movable bottom frames 5, and the two steel pipes on the two movable bottom frames 5 are butted together, and then the top half frame 62 is rotated to close the top half frame 62 and the bottom half frame 61. After the locking screw 63 is rotated, the locking screw 63 is locked with the bottom half frame 61. When the bracket adjustment rod 642 is rotated, the bracket adjustment rod 642 is connected to the top half frame 62 through a threaded connection, driving the bracket The bottom plate 643 and the gasket 645 are moved toward the steel pipe and clamped to position it. After the position of the steel pipe is fixed, the external ring plate 34 is rotated to drive the movable rotating frame 32 to rotate. The threaded connection between the movable rotating frame 32 and the lifting threaded rod 35 drives the lifting threaded rod 35 to rise. The lifting threaded rod 35 pushes the movable bottom frame 5 to move upward. The movable bottom frame 5 moves upward smoothly under the restriction of the balance rod 4, realizing the lifting and lowering of the movable bottom frame 5 and the steel pipe as a whole, until the two steel pipes are butt-jointed with each other, and finally the spot welding operation is performed by the spot welding end 9.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spot welding device for joints at both ends of a steel pipe, comprising a device body (1), a fixed bottom frame (2), a lifting and adjusting box (3), a balancing rod (4), a movable bottom frame (5), a clamping frame (6), a conveying frame (7), a screw motor (8) and a spot welding end (9), characterized in that: A fixed bottom frame (2) is provided on the outside of the equipment body (1), and the fixed bottom frame (2) is fixedly connected to the equipment body (1); a lifting and lowering adjustment box (3) is provided below the fixed bottom frame (2); a balancing rod (4) is provided on the outside of the lifting and lowering adjustment box (3); a movable bottom frame (5) is provided above the fixed bottom frame (2); a clamping frame (6) is provided on the movable bottom frame (5); a spot welding end (9) is provided above the clamping frame (6); a conveying frame (7) is provided above the spot welding end (9); and a screw motor (8) is provided above the conveying frame (7); The clamping frame (6) comprises a bottom half frame (61), a top half frame (62), a locking screw (63) and an adjustment bracket (64); the top half frame (62) is provided above the bottom half frame (61); one end of the top half frame (62) is provided with a locking screw (63); and the adjustment bracket (64) is provided on the locking screw (63).

2. A spot welding device for joints at both ends of a steel pipe according to claim 1, characterized in that: The lifting and adjusting box (3) comprises a fixed base (31), a movable rotating frame (32), a limiting ring plate (33), an external ring plate (34) and a lifting threaded rod (35); the movable rotating frame (32) is provided above the fixed base (31); the limiting ring plate (33) is fixedly mounted on the top of the fixed base (31); the external ring plate (34) is provided on the outside of the movable rotating frame (32); and the lifting threaded rod (35) is provided inside the movable rotating frame (32).

3. A spot welding device for joints at both ends of a steel pipe according to claim 1, characterized in that: The adjustment bracket (64) comprises a bracket top plate (641), a bracket adjustment rod (642), a bracket bottom plate (643), a bracket connecting rod (644) and a gasket (645); a bracket adjustment rod (642) is provided inside the bracket top plate (641); the bottom end of the bracket adjustment rod (642) is movably mounted on the bracket bottom plate (643); bracket connecting rods (644) are provided on both sides of the bracket adjustment rod (642); and a gasket (645) is provided at the bottom end of the bracket bottom plate (643).

4. A spot welding device for joints at both ends of a steel pipe according to claim 3, characterized in that: The top end of the support connecting rod (644) is fixedly connected to the support top plate (641), the bottom end of the support connecting rod (644) is fixedly connected to the support bottom plate (643), and the two support connecting rods (644) on both sides of the support adjustment rod (642) are parallel to each other.

5. The spot welding equipment for two end joints of a steel pipe according to claim 2, characterized in that: The movable rotating frame (32) is nested on the limiting ring plate (33), and the limiting ring plate (33) and the movable rotating frame (32) are movably connected. At the same time, an internal thread is provided on the inner wall of the movable rotating frame (32), and the movable rotating frame (32) and the lifting threaded rod (35) are threadedly connected.

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