Movable clamp for guaranteeing coaxial welding of pipelines

Abstract

The utility model discloses a movable fixture for guaranteeing coaxial welding of pipelines, which relates to the technical field of pipeline welding fixtures and comprises a support frame, a lifting slide bar, a mounting beam and a pipeline coaxial fixture. The pipeline coaxial clamp comprises a clamp mounting seat, a hook-shaped clamping frame, a clamping sliding block, a pipeline clamping rod and a clamping screw rod; the welding fixture can be used for welding connection operation of pipelines of various specifications, especially for pipelines with large pipe diameters, due to the fact that the weight of the welding fixture is large, welding accuracy is difficult to guarantee due to the fact that welding depends on experience of workers traditionally, and the welding fixture can be used for clamping and fixing two sections of pipelines and guaranteeing coaxiality through the fixture. A welding worker only needs to perform welding, so that the requirement on the welding worker can be reduced, and the labor cost can be effectively reduced; in addition, the clamp can be transported more conveniently due to the quick disassembly and assembly structure.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline welding clamps, in particular to a movable clamp used for ensuring coaxial welding of pipelines. Background Art

[0002] Pipe welding connection is a very common pipe connection method in current production and life. However, in actual applications, pipe welding connections are mostly based on the experience of welding workers, and welding fixtures are rarely used for welding operations. However, welding based on the experience of workers cannot guarantee welding accuracy, and the welding quality will also be uneven. Therefore, the welded pipe will affect the fluid transportation in the pipe. If the length of the welded pipe is too long, the energy consumption of fluid transportation will be seriously consumed, thereby greatly increasing the cost of fluid transportation and making it difficult to meet the low-energy transportation needs of the fluid. In addition, the experience of some welding workers on site who have high requirements for welding accuracy cannot meet the needs. Utility Model Content

[0003] The purpose of the utility model is to provide a movable clamp for ensuring coaxial welding of pipelines, so as to solve the problems in the prior art proposed in the above background technology that pipeline welding connections mostly rely on the experience of workers, cannot guarantee welding accuracy, and the welding quality is also uneven, and it is difficult to meet the low-energy consumption transportation requirements of fluids.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a movable clamp for ensuring the coaxial welding of pipelines, comprising two gate-shaped support frames, a lift slide bar that can be lifted and lowered is arranged in the middle of the top cross beams of the two support frames, a mounting cross beam is arranged between the two lifting slide bars, and a pipeline coaxial clamp is arranged in the middle of the mounting cross beam; the pipeline coaxial clamp comprises a clamp mounting seat fixedly arranged on the bottom surface of the mounting cross beam, a hook-shaped clamping frame is hinged on the front and rear sides of the clamp mounting seat, and the hook-shaped clamping frame A strip-shaped through hole is axially arranged at the middle position, and a clamping slider that can slide along the axial direction is commonly arranged in the two strip-shaped through holes. A pipe clamping rod is arranged at the center of the bottom surface of the clamping slider, and a pipe clamping rod is arranged at the lower hook head of the two hook-shaped clamping frames; a threaded through hole and a clamping screw are arranged at the center of the clamp mounting seat, a through hole is transversely penetrated at the top of the clamping screw and a rotating lever is arranged, and a concave groove is arranged at the center of the top surface of the clamping slider, which can clamp the bottom end of the clamping screw and rotate without hindrance.

[0005] Preferably, the support frame is of a quick-disassembly and quick-assembly type, comprising two frame columns arranged opposite to each other, a base beam is transversely arranged at the bottom of the two frame columns, and a frame beam is commonly arranged on the top of the two frame columns, and vertical beam sleeves that can be directly mounted on the top of the frame column are arranged on the bottom surfaces of both ends of the frame beam, a vertical rectangular through hole is arranged at the center of the frame beam, and a liftable lifting slide rod is inserted into the rectangular through hole.

[0006] Preferably, the lifting slide bar is longitudinally provided with a plurality of rectangular slide bar through holes which penetrate horizontally, and a limit slider can be clamped in the slide bar through holes, and a mounting crossbeam is commonly provided between the two lifting slide bars.

[0007] Preferably, a rectangular beam sleeve which can be sleeved on the outside of the lifting slide rod is provided at both ends of the mounting beam, and a pipeline coaxial clamp is provided at the center of the mounting beam.

[0008] Preferably, the three pipe clamping rods are always located on the same circumference, and a clamping plane is provided on one side close to the center of the circle, and a radial screw hole is provided at the center of the clamping plane, and a clamping bolt is provided in the screw hole.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The utility model can be used for welding connection operations of pipelines of various specifications, especially for pipelines with larger diameters. Because of their own heavy weight, traditional welding relying on workers' experience is difficult to ensure welding accuracy. However, the utility model can clamp and fix two sections of pipelines through a clamp and ensure coaxiality. Welding workers only need to perform welding, thereby reducing the requirements for welding workers and effectively reducing labor costs. In addition, the quick disassembly and assembly structure of the utility model can make the clamp more convenient to transport. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is the front view of the utility model;

[0012] Figure 2 for Figure 1 Structural diagram;

[0013] Figure 3 It is the left view;

[0014] Figure 4 for Figure 3 A magnified view of middle;

[0015] Figure 5 A top view of the installed beam;

[0016] In the figure: supporting frame-1, frame column-11, base beam-12, frame beam-13, beam sleeve-14, lifting slide rod-2, slide rod through hole-21, limit slider-22, mounting beam-3, beam sleeve-31, pipe coaxial clamp-4, clamp mounting seat-41, hook-shaped clamping frame-42, strip through hole-43, clamping slider-44, pipe clamping rod-45, clamping plane-451, clamping bolt-452, clamping screw-46, rotating lever-47. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the technical solution in the embodiments of the present utility model is clearly and completely described below in conjunction with the accompanying drawings and specific embodiments.

[0018] Please refer to Figure 1-5 , Figure 1 This is the front view of the utility model; Figure 2 for Figure 1 Structural diagram; Figure 3 It is the left view; Figure 4 for Figure 3 A magnified view of middle; Figure 5 Top view of the installed beam.

[0019] The utility model provides a movable clamp for ensuring the coaxial welding of pipelines, which is used for ensuring the coaxiality of two welded pipeline sections when two pipeline sections with the same diameter are connected and welded, so as to ensure the accuracy of the pipeline connection after welding and avoid affecting the transported fluid; it comprises two gate-shaped support frames 1, and liftable lifting slide bars 2 are arranged in the middle of the top cross beams of the two support frames 1, and an installation cross beam 3 is arranged between the two lifting slide bars 2, and a pipeline coaxial clamp 4 is arranged in the middle of the installation cross beam 3 for clamping and fixing the pipeline to be welded.

[0020] The support frame 1 is quick-disassembled and quick-assembled, and includes two frame columns 11 arranged opposite to each other. A base beam 12 is horizontally arranged at the bottom of the two frame columns 11, and a frame beam 13 is commonly arranged on the top of the two frame columns 11. Vertical beam sleeves 14 are arranged on the bottom surfaces of both ends of the frame beam 13, and the beam sleeves 14 can be directly sleeved on the top of the frame column 11; a vertical rectangular through hole 15 is arranged at the center of the frame beam 13, and a liftable lifting slide rod 2 is inserted into the rectangular through hole 15.

[0021] The lifting slide bar 2 is longitudinally provided with a plurality of rectangular slide bar through holes 21 penetrating transversely, and a limit slider 22 can be clamped in the slide bar through hole 21. Therefore, a limit slider 22 is arranged in the slide bar through hole 21 located above the frame beam 13 to limit the lifting height of the lifting slide bar 2; an installation beam 3 is commonly arranged between the two lifting slide bars 2.

[0022] A rectangular beam sleeve 31 is provided at both ends of the mounting beam 3. The beam sleeve 31 is sleeved on the outside of the lifting slide bar 2 and its height is limited by a limit slider 22 at the bottom; a pipe coaxial clamp 4 is provided at the center of the mounting beam 3.

[0023] The pipe coaxial clamp 4 includes a clamp mounting seat 41 fixedly arranged on the bottom surface of the mounting crossbeam 3, a hook-shaped clamping frame 42 is hinged on the front and rear sides of the clamp mounting seat 41 respectively, and a strip through hole 43 is axially arranged at the middle position of the hook-shaped clamping frame 42, and a clamping slide block 44 that can slide along its axial direction is commonly arranged in the two strip through holes 43, a pipe clamping rod 45 is arranged at the center of the bottom surface of the clamping slide block 44, and a pipe clamping rod 45 is arranged at the lower hook head of the two hook-shaped clamping frames 42; a threaded through hole is arranged at the center of the clamp mounting seat 41 and a clamping screw 46 is arranged, and a concave groove is arranged at the center of the top surface of the clamping slide block 44, and the bottom end of the clamping screw 46 is clamped in the groove and can rotate without hindrance; a through hole is horizontally penetrated at the top of the clamping screw 46 and a rotating lever 47 is arranged.

[0024] The three pipe clamping rods 45 are always located on the same circumference, and a clamping plane 451 is provided on one side close to the center of the circle. A radial screw hole is provided at the center of the clamping plane 451, and a clamping bolt 452 is provided in the screw hole.

[0025] When in use, the two sections of pipes to be welded are brought close together, and then the two supporting frames 1 and the lifting slide rods 2 are quickly assembled and set across the two sections of pipes respectively, and then the mounting beam 3 and the pipe coaxial clamp 4 connected thereto are quickly connected to the two lifting slide rods 2. After the connection is completed, the height of the lifting slide rod 2 and the mounting beam 3 is adjusted to place the pipe coaxial clamp 4 at the welding connection, and then the width between the bottoms of the two hook-shaped clamping frames is adjusted by rotating the clamping screw 46 to make it larger than the diameters of the two pipes, and then the mounting beam 3 is adjusted to move downward so that the three pipe clamping rods 45 are close to the outer wall of one of the sections of the pipe, and then the three clamping bolts 452 are adjusted to ensure that the two sections of the pipe are coaxial, and then the welding connection operation can be carried out.

[0026] The utility model can be used for welding connection operations of pipelines of various specifications, especially for pipelines with larger diameters. Because of their own heavy weight, traditional welding relying on workers' experience is difficult to ensure welding accuracy. However, the utility model can clamp and fix two sections of pipelines through a clamp and ensure coaxiality. Welding workers only need to perform welding, thereby reducing the requirements for welding workers and effectively reducing labor costs. In addition, the quick disassembly and assembly structure of the utility model can make the clamp more convenient to transport.

[0027] Although the embodiments of the utility model have been shown and described, it is obvious that the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, it can be understood by ordinary technicians in this field that all other embodiments obtained by making various changes, modifications, substitutions and variations to these embodiments without departing from the principle and spirit of the utility model and without making creative work, all belong to the scope of protection of the utility model.

Claims

1. A movable fixture for ensuring coaxial welding of pipelines, characterized in that: The invention comprises two gate-shaped support frames (1), wherein a lifting slide bar (2) which can be lifted and lowered is arranged in the middle of the top cross beams of the two support frames (1), a mounting cross beam (3) is arranged between the two lifting slide bars (2), and a pipeline coaxial clamp (4) is arranged in the middle of the mounting cross beam (3); the pipeline coaxial clamp (4) comprises a clamp mounting seat (41) fixedly arranged on the bottom surface of the mounting cross beam (3), a hook-shaped clamping frame (42) is hingedly connected to the front and rear sides of the clamp mounting seat (41), and a strip-shaped through hole (43) is axially arranged in the middle position of the hook-shaped clamping frame (42), and the two strip-shaped through holes are arranged in the middle of the hook-shaped clamping frame (42). (43) are provided with a clamping slider (44) which can slide along its axial direction, and a pipe clamping rod (45) is provided at the center of the bottom surface of the clamping slider (44), and a pipe clamping rod (45) is provided at the lower hook head of each of the two hook-shaped clamping frames (42); a threaded through hole is provided at the center of the clamp mounting seat (41) and a clamping screw (46) is provided, and a through hole is provided transversely through the top of the clamping screw (46) and a rotating lever (47) is provided, and a concave groove is provided at the center of the top surface of the clamping slider (44) so ​​that the bottom end of the clamping screw (46) can be clamped and rotated without hindrance.

2. The movable fixture for ensuring coaxial welding of pipelines according to claim 1 is characterized in that: The support frame (1) is of a quick-disassembly and quick-assembly type, comprising two frame columns (11) arranged opposite to each other, the bottom of each of the two frame columns (11) is provided with a base crossbeam (12) arranged transversely, the tops of the two frame columns (11) are jointly provided with a frame crossbeam (13), the bottom surfaces of both ends of the frame crossbeam (13) are provided with vertical crossbeam sleeves (14) which can be directly sleeved on the top of the frame column (11), a vertical rectangular through hole (15) is provided at the center of the frame crossbeam (13), and a liftable lift slide rod (2) is inserted into the rectangular through hole (15).

3. The movable fixture for ensuring coaxial welding of pipelines according to claim 2 is characterized in that: The lifting slide bar (2) is longitudinally provided with a plurality of rectangular slide bar through holes (21) penetrating transversely, and a limit slider (22) can be clamped in the slide bar through hole (21), and a mounting crossbeam (3) is commonly provided between the two lifting slide bars (2).

4. The movable fixture for ensuring coaxial welding of pipelines according to claim 3 is characterized in that: A rectangular beam sleeve (31) which can be sleeved on the outside of the lifting slide bar (2) is provided at both ends of the installation beam (3), and a pipeline coaxial clamp (4) is provided at the center of the installation beam (3).

5. The movable fixture for ensuring coaxial welding of pipelines according to claim 4 is characterized in that: The three pipe clamping rods (45) are always located on the same circumference, and a clamping plane (451) is arranged on one side close to the center of the circle. A radial screw hole is arranged at the center of the clamping plane (451), and a clamping bolt (452) is arranged in the screw hole.

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