Clamping device for butt welding of heat supply pipelines

Abstract

The invention discloses a butt welding clamp holder for heat supply pipelines. The butt welding clamp holder comprises a first arc-shaped frame, a second arc-shaped frame and a locking frame. One end of the second arc-shaped frame is hinged to one end of the first arc-shaped frame to form a circular clamping device to clamp a heat supply pipeline, and one end of the locking frame is hinged to the other end of the first arc-shaped frame and can be arranged at the other end of the second arc-shaped frame in a sleeving mode to lock the first arc-shaped frame and the second arc-shaped frame. The pipeline is clamped through the two semicircular arc-shaped frames, the clamping force is provided through the locking frame to ensure the stability of the pipeline in the welding operation process, by means of the auxiliary tool, the pipeline alignment speed can be increased, the welding gap and the pipeline alignment tolerance can be ensured, and a foundation is laid for argon arc welding, bottoming, single-face welding and double-face shape welding.

Description

Technical Field

[0001] The invention relates to the technical field of heating pipeline welding auxiliary equipment, and more particularly to a heating pipeline butt welding clamp. Background Art

[0002] During the construction of heating infrastructure, the maximum pipe diameter in the welding construction of heating pipelines is 1.2 meters. Because the Q235 pipes used in pipeline transportation and hoisting are soft, pipeline deformation is inevitable. Pipe deformation may cause some safety and quality accidents during the butt welding process, such as: large amount of misalignment, slow construction speed, poor pipeline welding quality, weakened rigidity, low pass rate of film inspection, manual labor in the pipeline during butt welding, great safety hazards, and unguaranteed quality.

[0003] Therefore, how to provide an auxiliary welding device that can correct deformed pipes, improve the quality of pipe docking, ensure that the misalignment of the pipe mouth meets the design requirements, and improve the pipe welding speed and welding quality is a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0004] In view of this, the present invention provides a heating pipe butt welding clamp, aiming to solve the above technical problems.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] A heating pipe butt welding clamp comprises a first arc frame, a second arc frame and a locking frame;

[0007] One end of the second arc frame is hinged to one end of the first arc frame to form a circular clamp to clamp the heating pipe, and one end of the locking frame is hinged to the other end of the first arc frame and can be sleeved on the other end of the second arc frame to lock the first arc frame and the second arc frame.

[0008] The beneficial effect of the above technical solution is that the first arc frame and the second arc frame are both semicircular frames, and the circular clamp formed by hinged connection can clamp the pipe. After the clamp clamps the pipe, the first arc frame and the second arc frame are locked by the locking frame to provide sufficient clamping force. After the pipe is clamped, the pipe can be butt-welded.

[0009] Preferably, the first arc frame and the second arc frame each include two symmetrically arranged semicircular steel plates, and multiple stiffening plates are welded between the two opposite side plate surfaces of the two semicircular steel plates. The two semicircular steel plates and the stiffening plates constitute an arc frame, which has a simple structure and is easy to process.

[0010] Preferably, the width of the two semicircular steel plates is smaller than the width of the stiffening plate, and the panel of the stiffening plate extends along the center of the clamp to place the positioning block. The width of the stiffening plate is greater than the width of the semicircular steel plate, and the stiffening plate protrudes toward the center of the clamp to place the positioning block, which can correct the deformation point of the pipeline and ensure the welding gap and the misalignment of the pipeline during the butt welding process.

[0011] Preferably, it further comprises a first pin shaft, and the ends of the two semicircular steel plates are provided with corresponding first pin holes, and the two semicircular steel plates corresponding to the first arc frame are sleeved on the ends of the two semicircular steel plates corresponding to the second arc frame, and the first pin shaft is arranged perpendicular to the panel of the semicircular steel plate and sequentially penetrates the first pin holes corresponding to the first arc frame and the second arc frame to fasten the first arc frame and the second arc frame. The first arc frame and the second arc frame are hinged by the pin shaft, and the first arc frame and the second arc frame can be folded relative to each other, which is convenient for clamping the pipeline, and the operation is simple, the disassembly is convenient, and the transportation is convenient, which effectively ensures the safety of the construction workers.

[0012] Preferably, the locking frame comprises two symmetrically arranged steel plates, one end of the two opposite panels of the two steel plates is fixed with an end plate, and the other end is provided with a second pin hole; the two semicircular plates corresponding to the first arc frame have a through hole at one end away from the first pin hole, and the panels of the two steel plates corresponding to the second pin hole abut against the panels of the two semicircular steel plates on the first arc frame corresponding to the through hole, and the second pin hole is connected to the through hole; the second pin is arranged perpendicular to the steel plate and passes through the second pin hole and the through hole in sequence to fasten the locking frame to the first arc frame. The locking frame is hinged to the first arc frame through the second pin, which does not affect the clamping of the pipe by the clamp.

[0013] Preferably, it also includes a baffle and a hydraulic jack, wherein the two ends of the baffle are respectively fixed to the two opposite panels of the second arc frame away from the first pin shaft hole; the locking frame can be rotatably mounted on the baffle; the hydraulic jack is placed between the two steel plates, and its fixed end abuts against the side panel of the baffle close to the first pin shaft hole, and the telescopic end can abut against the side panel of the end plate away from the second pin shaft. When the first arc frame and the second arc frame are in contact with the outer wall of the pipeline, the locking frame is rotated to engage the baffle, at which time the end of the locking frame is on the second arc frame, and the baffle is located at the end of the second arc frame. The first arc frame and the second arc frame can be locked by applying force between the baffle and the end through the two ends of the hydraulic jack, so as to ensure that the clamp has sufficient clamping force and the pipeline will not slide during the welding operation.

[0014] Preferably, the thickness of the semicircular steel plate and the steel plate is not less than 1.2 cm, so as to ensure that the clamp has a certain strength and improve the service life.

[0015] Preferably, a plurality of lifting ears are fixed on the top surface of the clamp, so as to facilitate transportation and use.

[0016] Preferably, the height of the clamp is not less than 20 cm to ensure sufficient working space.

[0017] It can be seen from the above technical scheme that compared with the prior art, the present invention discloses a heating pipe butt welding clamp, which clamps the pipe by two semicircular arc frames, and provides clamping force through a locking frame to ensure the stability of the pipe during the welding operation. The use of this auxiliary tooling can increase the butt welding speed of the pipe, ensure the welding gap and the amount of misalignment of the pipe, and also lay the foundation for single-sided and double-sided welding of argon arc welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the auxiliary tooling structure provided by the present invention;

[0020] Figure 2 This is a top view of the auxiliary tooling provided by the present invention.

[0021] in,

[0022] 1-first arc frame; 2-second arc frame; 3-first pin shaft; 4-stiffening plate; 5-locking frame; 51-baffle plate; 52-end plate; 53-steel plate; 6-second pin shaft; 7-semicircular steel plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See attached Figure 1 and 2 , the embodiment of the present invention discloses a heating pipe butt welding clamp, comprising a first arc frame 1, a second arc frame 2 and a locking frame 5;

[0025] One end of the second arc frame 2 is hinged to one end of the first arc frame 1 to form a circular clamp to clamp the heating pipe, and one end of the locking frame 5 is hinged to the other end of the first arc frame 1 and can be sleeved on the other end of the second arc frame 2 to lock the first arc frame 1 and the second arc frame 2.

[0026] In this embodiment, the first arc frame 1 and the second arc frame 2 each include two symmetrically arranged semicircular steel plates 7 , and a plurality of stiffening plates 4 are welded between the two opposite side plate surfaces of the two semicircular steel plates 7 .

[0027] like Figure 1 As shown, the first arc frame and the second arc frame are both semicircular frames, which are welded by two semicircular steel plates and a stiffening plate, and are easy to obtain and manufacture.

[0028] In order to further optimize the above technical solution, the width of the two semicircular steel plates 7 is smaller than the width of the stiffening plate 4, and the panel of the stiffening plate 4 extends along the center of the clamp to place the positioning block.

[0029] In this embodiment, the width of the two semicircular steel plates 7 is 10 cm, and the width of the stiffening plate 4 is 12 cm. The two ends of the stiffening plate are respectively fixed to the panels opposite to the two semicircular steel plates, and the panels of the stiffening plate and the panels of the semicircular steel plates are arranged perpendicular to each other; the width of the stiffening plate is greater than the width of the semicircular steel plate and protrudes toward the center of the clamp, and the protruding part of the stiffening plate can be placed on the positioning block, and a slot is provided on one side of the positioning block to be clamped on the stiffening plate. The deformation point of the pipeline can be corrected by the positioning block, which is convenient and flexible to use and can effectively ensure the quality and misalignment of the pipeline butt welding.

[0030] When in use, the two arc frames are respectively in contact with the outer wall of the pipe, and the first arc frame and the second arc frame are locked by the locking frame so that the clamp can clamp the pipe. The locking frame can prevent the pipe from deflecting and ensure the stability of the pipe during welding. The ends of the two pipes can be clamped directly by the two clamps, so as to perform butt welding on the two pipes, ensuring the qualified rate of flaw detection filming.

[0031] In order to further optimize the above technical solution, it also includes a first pin shaft 3, and corresponding first pin holes are opened at the ends of the two semicircular steel plates 7. The two semicircular steel plates 7 corresponding to the first arc frame 1 are sleeved on the ends of the two semicircular steel plates 7 corresponding to the second arc frame 2. The first pin shaft 3 is arranged perpendicular to the panel of the semicircular steel plate 7 and passes through the corresponding first pin holes on the first arc frame 1 and the second arc frame 2 in sequence to fasten the first arc frame 1 and the second arc frame 2.

[0032] The first arc frame and the second arc frame are hinged by a pin shaft and can rotate relatively, which can facilitate the clamping of the pipeline. They can be easily folded, simple to dismantle, flexible to operate, and easy to transport, thereby ensuring the safety of construction workers.

[0033] In order to further optimize the above technical solution, the locking frame 5 includes two symmetrically arranged steel plates 53, and the two opposite panels of the two steel plates 53 are fixed with an end plate 52 at one end, and a second pin shaft hole is opened at the other end; the two semicircular plates 7 corresponding to the first arc frame 1 are opened with a through hole at one end away from the first pin shaft hole, and the panels of the two steel plates 53 corresponding to the second pin shaft hole are abutted with the panels of the two semicircular steel plates 7 on the first arc frame 1 corresponding to the through holes, and the second pin shaft hole is connected to the through hole accordingly; the second pin shaft 6 is arranged perpendicular to the steel plate 53 and passes through the second pin shaft hole and the through hole in sequence to fasten the locking frame 5 to the first arc frame 1.

[0034] The locking frame is hinged to the first arc frame through the second pin shaft, which does not affect the clamping of the pipeline. The clamping force provided by the locking of the locking frame prevents the pipeline from deflecting, solves the welding gap of the pipeline, and improves the weld quality and construction progress.

[0035] In order to further optimize the above technical solution and ensure that the locking frame can provide sufficient clamping force for the pipeline, it also includes a baffle 51 and a hydraulic jack. The two ends of the baffle 51 are respectively fixed to the two opposite panels of the second arc frame 2 away from the first pin shaft hole; the locking frame 5 can rotatably sleeve the baffle 51; the hydraulic jack is placed between two steel plates 53, and its fixed end abuts against the side panel of the baffle 51 close to the first pin shaft hole, and the telescopic end can abut against the side panel of the end plate 52 away from the second pin shaft 6.

[0036] After the clamp clamps the pipe, the locking frame is rotated to make it cover the baffle of the second arc frame, and the hydraulic jack (not shown in the figure) is started. The fixed end of the hydraulic jack abuts against the baffle of the second arc frame, and the telescopic end abuts against the end of the locking frame. Since the locking frame is hinged to the first arc frame, as the hydraulic pressure increases, the hydraulic jack supports the end of the first arc frame and the baffle of the second arc frame, so that the first arc frame and the second arc frame can clamp the pipe.

[0037] In order to further optimize the above technical solution, ensure that the auxiliary tooling has a certain strength and ensure its service life, the thickness of the semicircular steel plate 7 and the steel plate 53 is not less than 1.2 cm. The height of the clamp is not less than 20 cm.

[0038] In order to further optimize the above technical solution and facilitate the transportation and use of the auxiliary tooling, a plurality of lifting ears are fixed to the top surface of the clamp.

[0039] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0040] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A heating pipe butt welding clamp, characterized in that: It comprises a first arc-shaped frame (1), a second arc-shaped frame (2) and a locking frame (5); One end of the second arc frame (2) is hinged to one end of the first arc frame (1) to form a circular clamp for clamping the heating pipe, and one end of the locking frame (5) is hinged to the other end of the first arc frame (1) and can be sleeved on the other end of the second arc frame (2) to lock the first arc frame (1) and the second arc frame (2).

2. A heating pipe butt welding clamp according to claim 1, characterized in that: The first arc-shaped frame (1) and the second arc-shaped frame (2) each comprise two symmetrically arranged semicircular steel plates (7), and a plurality of stiffening plates (4) are welded between the two opposite side plate surfaces of the two semicircular steel plates (7).

3. A heating pipe butt welding clamp according to claim 2, characterized in that: The width of the two semicircular steel plates (7) is smaller than the width of the stiffening plate (4), and the face plate of the stiffening plate (4) extends along the center of the clamp to place the positioning block.

4. A heating pipe butt welding clamp according to claim 2, characterized in that: It also includes a first pin shaft (3), and corresponding first pin holes are opened at the ends of the two semicircular steel plates (7). The two semicircular steel plates (7) corresponding to the first arc frame (1) are sleeved on the ends of the two semicircular steel plates (7) corresponding to the second arc frame (2). The first pin shaft (3) is arranged perpendicular to the panel of the semicircular steel plate (7) and passes through the corresponding first pin holes on the first arc frame (1) and the second arc frame (2) in sequence to fasten the first arc frame (1) and the second arc frame (2).

5. A heating pipe butt welding clamp according to claim 4, characterized in that: The locking frame (5) comprises two symmetrically arranged steel plates (53), one end of two opposite panels of the two steel plates (53) being fixed with an end plate (52) and the other end being provided with a second pin hole; the two semicircular plates (7) corresponding to the first arc frame (1) are provided with a through hole at one end away from the first pin hole, the panels of the two steel plates (53) corresponding to the second pin hole are in contact with the panels of the two semicircular steel plates (7) on the first arc frame (1) corresponding to the through hole, and the second pin hole is connected to the through hole; the second pin (6) is arranged perpendicular to the steel plate (53) and passes through the second pin hole and the through hole in sequence to fasten the locking frame (5) to the first arc frame (1).

6. A heating pipe butt welding clamp according to claim 5, characterized in that: It also includes a baffle (51) and a hydraulic jack, wherein the two ends of the baffle (51) are respectively fixed to two opposite panels of the second arc frame (2) away from the first pin shaft hole; the locking frame (5) is rotatably mounted on the baffle (51); the hydraulic jack is placed between the two steel plates (53), and its fixed end is in contact with a side panel of the baffle (51) close to the first pin shaft hole, and its telescopic end can be in contact with a side panel of the end plate (52) away from the second pin shaft (6).

7. A heating pipe butt welding clamp according to claim 5, characterized in that: The thickness of the semicircular steel plate (7) and the steel plate (53) is not less than 1.2 cm.

8. A heating pipe butt welding clamp according to claim 1, characterized in that: A plurality of lifting ears are fixed on the top surface of the clamp.

9. A heating pipe butt welding clamp according to claim 1, characterized in that: The height of the holder is not less than 20 cm.

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