Welding butt-joint fixing clamp compatible with multiple pipe diameters

Abstract

The utility model relates to the technical field of pipeline butt welding, and discloses a multi-pipe-diameter compatible welding butt fixing clamp which comprises a device body, the device body comprises a left fixing clamp and a right fixing clamp, and a movable rod is arranged between the left fixing clamp and the right fixing clamp. According to the device, a pipeline on the left side can be clamped and fixed through the left fixing clamp, a pipeline on the right side can be clamped and fixed through the right fixing clamp, a variable-diameter clamping plate can be detached and replaced in the right fixing clamp, the variable-diameter clamping plate can be clamped to the inner wall of the right fixing clamp through a clamping base, and then the pipe diameter between the right fixing clamp is changed; the device body can meet the clamping and butt joint requirements of pipe diameters with different sizes, the left fixing clamp and the right fixing clamp can be driven to oppositely move and approach by rotating the movable rod, the two pipes are driven to approach and butt joint with each other, the distance between the two pipes meets the welding condition, and the welding quality of butt joints of the two pipes is improved.

Description

Technical Field

[0001] This utility model relates to the field of pipe butt welding technology, and in particular to a welding butt fixing clamp compatible with multiple pipe diameters. Background Technology

[0002] A pipe welding butt joint device is a piece of equipment used to connect pipes. It creates a butt joint at the ends of the pipes, allowing two pipes to be accurately joined and welded. The device typically consists of two main parts: a butt joint clamp and a butt joint support. The butt joint clamp is used to hold and position the pipe ends, ensuring their correct alignment and spacing. Pipe welding butt joint devices play a crucial role in the pipe welding process, improving connection quality, reducing defects, and ensuring the safety and reliability of the weld.

[0003] Regarding the above and existing related technologies, the inventors believe that the following defects often exist: When boiler pipes need to be replaced on a large scale, the welding conditions are often not met due to inaccurate alignment of the two pipes, which delays the progress. In addition, when welding pipes of different thicknesses, ordinary clamps cannot be accurately positioned, which can easily lead to misalignment and thus affect the welding quality between two pipes of different thicknesses. Utility Model Content

[0004] The technical problem to be solved by this utility model is that the existing technology has the disadvantage that ordinary clamps cannot be accurately positioned when welding pipes of different diameters, which easily leads to misalignment and thus affects the welding quality between two pipes of different diameters. To this end, we propose a welding joint fixing clamp that is compatible with multiple pipe diameters.

[0005] To achieve the above objectives, this application adopts the following technical solution: a multi-diameter compatible welding joint fixing clamp, comprising a device body, the device body including a left fixing clamp and a right fixing clamp, and a movable rod provided between the left fixing clamp and the right fixing clamp;

[0006] The left fixed clamp includes a left fixed clamping plate, and a left movable clamping plate is provided above the left fixed clamping plate;

[0007] The right fixed clamp includes a right fixed clamp plate, a right movable clamp plate is provided above the right fixed clamp plate, and variable diameter clamp plates are symmetrically provided on the inner walls of the right fixed clamp plate and the right movable clamp plate. A clamp seat is provided at the bottom end of the variable diameter clamp plate and extends through the interior of the right fixed clamp.

[0008] A connecting shaft assembly is provided at the connection between the left fixed plate and the back of the left movable plate, and at the connection between the right fixed plate and the back of the right movable plate.

[0009] Preferably, the connecting shaft assembly includes a fixed shaft, a movable shaft, and a rotating pin. The fixed shaft is welded and fixed to the left fixed plate and the right fixed plate, respectively. The movable shaft is welded and fixed to the left movable plate and the right movable plate, respectively. The rotating pin passes through the interior of the fixed shaft and the movable shaft.

[0010] Preferably, the movable rod is located at the bottom front end of the left and right fixed plates and between the left and right fixed plates. A connecting ring is welded and fixed to the bottom front end of the left and right fixed plates. Threaded rods are provided on both sides of the movable rod and penetrate into the interior of the connecting ring. A sleeve ring is welded and fixed to the bottom back end of the left and right fixed plates. A fixed rod is provided between the back sides of the left and right fixed plates, and sliding rods are provided on both sides of the fixed rod. The sliding rods slide through into the interior of the sleeve ring.

[0011] Preferably, the inner walls of the right fixed plate and the right movable plate are provided with slots that match the card seat, and the outer wall of the card seat has arc-shaped surfaces protruding around its perimeter, which fit against the inner wall of the slot. The left fixed plate and the left movable plate, and the right fixed plate and the right movable plate are fixed together by fastening bolts.

[0012] Preferably, the outer wall of the threaded rod is provided with an external thread, and the inner wall of the connecting ring is provided with a threaded groove that matches the external thread of the threaded rod, and the threads on the outer walls of the two threaded rods are symmetrically distributed.

[0013] Preferably, the inner wall of the sleeve ring is provided with a telescopic groove that matches the sliding rod, the outer wall of the fixed rod is provided with a scale, and sufficient welding space is left between the left fixed clamp, the right fixed clamp and the movable rod and the fixed rod.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] In this invention, the left fixed clamp can clamp and fix the pipe on the left side, and the right fixed clamp can clamp and fix the pipe on the right side. By replacing the reducing plate inside the right fixed clamp, the reducing plate can be engaged with the inner wall of the right fixed plate and the right movable plate through the clamp seat, thereby changing the pipe diameter between the right fixed clamps. This allows the main body of the device to clamp and connect pipes of different diameters. By rotating the movable rod, the left and right fixed clamps can be moved towards each other and brought closer together, causing the two pipes to approach and connect, so that the distance between the two pipes meets the welding conditions and improves the welding quality between the two pipe joints. Attached Figure Description

[0016] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts:

[0017] Figure 1 This is a schematic diagram of the overall structure of the main body of the device of this utility model. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the overall structure of the main body of the device of this utility model. Figure 2 ;

[0019] Figure 3 This is an exploded structural diagram of the right fixed clamping plate and the variable diameter clamping plate of this utility model;

[0020] Figure 4 This is a schematic diagram of the connection structure between the movable rod and the connecting ring of this utility model;

[0021] Figure 5 This is a cross-sectional structural diagram of the left fixing plate of this utility model.

[0022] Legend: 1. Main body of the device; 2. Left fixed clamp; 201. Left fixed clamping plate; 202. Left movable clamping plate; 3. Right fixed clamp; 301. Right fixed clamping plate; 302. Right movable clamping plate; 303. Variable diameter clamping plate; 304. Clamping seat; 4. Connecting shaft assembly; 5. Movable rod; 501. Threaded rod; 502. Connecting ring; 503. Fixed rod; 504. Sliding rod; 505. Sleeve ring. Detailed Implementation

[0023] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0024] Reference Figures 1-5 As shown, this utility model provides a technical solution: a welding joint fixing clamp compatible with multiple pipe diameters, including a device body 1, the device body 1 including a left fixing clamp 2 and a right fixing clamp 3, and a movable rod 5 is provided between the left fixing clamp 2 and the right fixing clamp 3;

[0025] The left fixed clamp 2 includes a left fixed clamp plate 201, and a left movable clamp plate 202 is provided above the left fixed clamp plate 201;

[0026] The right fixed clamp 3 includes a right fixed clamp plate 301, a right movable clamp plate 302 is provided above the right fixed clamp plate 301, and variable diameter clamp plates 303 are symmetrically provided on the inner walls of the right fixed clamp plate 301 and the right movable clamp plate 302. A clamp seat 304 is provided at the bottom end of the variable diameter clamp plate 303 and extends through the interior of the right fixed clamp 3.

[0027] A connecting shaft assembly 4 is provided at the connection point between the left fixed plate 201 and the back of the left movable plate 202, and at the connection point between the right fixed plate 301 and the back of the right movable plate 302.

[0028] The left fixed clamp 2 can clamp and fix the pipe on the left side, and the right fixed clamp 3 can clamp and fix the pipe on the right side. By replacing the reducing clamp 303 inside the right fixed clamp 3, the reducing clamp 303 can be engaged with the inner wall of the right fixed clamp 301 and the right movable clamp 302 through the clamp seat 304, thereby changing the pipe diameter between the right fixed clamps 3. This allows the main body 1 of the device to clamp and connect pipes of different diameters. By rotating the movable rod 5, the left fixed clamp 2 and the right fixed clamp 3 can be moved towards each other and brought closer together, so that the distance between the two pipes meets the welding conditions and improves the welding quality between the two pipe joints.

[0029] Reference Figures 1-4 As shown in this embodiment: the connecting shaft assembly 4 includes a fixed shaft, a movable shaft, and a rotating pin. The fixed shaft is welded and fixed to the left fixed clamping plate 201 and the right fixed clamping plate 301 respectively, and the movable shaft is welded and fixed to the left movable clamping plate 202 and the right movable clamping plate 302 respectively. The rotating pin passes through the interior of the fixed shaft and the movable shaft. The connecting shaft assembly 4, including the fixed shaft, the movable shaft, and the rotating pin, facilitates the left movable clamping plate 202 and the right movable clamping plate 302 to rotate open or close on the left fixed clamping plate 201 and the right fixed clamping plate 301 via the rotating pin. The left fixed clamping fixture 2 and the right fixed clamping fixture 3 can be rotated open, which facilitates the clamping and fixing of straight pipes by the left fixed clamping fixture 2 and the right fixed clamping fixture 3, and can also clamp and fix the pipe opening of bent pipes, so that the main body of the device 1 can meet the clamping and alignment of various pipes.

[0030] Reference Figures 2-5As shown in this embodiment: the movable rod 5 is located at the bottom front end of the left fixed plate 201 and the right fixed plate 301, and is located between the left fixed plate 201 and the right fixed plate 301. A connecting ring 502 is welded and fixed to the bottom front end of the left fixed plate 201 and the right fixed plate 301. Threaded rods 501 are provided on both sides of the movable rod 5, and extend into the interior of the connecting ring 502. A sleeve ring 505 is welded and fixed to the bottom back end of the left fixed plate 201 and the right fixed plate 301. The left fixed plate 201 and the right fixed plate 301... A fixed rod 503 is provided between the back sides, and sliding rods 504 are provided on both sides of the fixed rod 503. The sliding rods 504 slide through into the inside of the sleeve ring 505. By rotating the movable rod 5, the movable rod 5 rotates and drives the threaded rod 501 to rotate. The rotation of the threaded rod 501 drives the two connecting rings 502 to move closer to each other through the thread, thereby driving the left fixed clamp 2 and the right fixed clamp 3 to move towards each other and move closer to each other, so that the gap between the left fixed clamp 2 and the right fixed clamp 3 clamping the pipe meets the welding specifications, thereby improving the welding accuracy at the joint of the two pipes.

[0031] Reference Figures 1-3 As shown in this embodiment: the inner walls of the right fixed plate 301 and the right movable plate 302 are provided with slots that match the card holder 304. The outer wall of the card holder 304 has arc-shaped protrusions around its perimeter, which fit against the inner wall of the slots. The left fixed plate 201 and the left movable plate 202, and the right fixed plate 301 and the right movable plate 302 are fixed together on the front by fastening bolts. The inner walls of the right fixed plate 301 and the right movable plate 302 are provided with slots that match the card holder 304. The card slot is equipped with a card holder 304. The outer wall of the card holder 304 has a curved surface protruding around it and fits against the inner wall of the card slot. This facilitates the contact and compression between the outer wall of the card holder 304 and the card slot, allowing the card holder 304 to engage with the inner wall of the right fixed card plate 301 and the right movable card plate 302. This also drives the variable diameter card plate 303 to be fixed inside the right fixed clamp 3, thus changing the pipe diameter of the right fixed clamp 3. This enables the right fixed clamp 3 and the left fixed clamp 2 to perform welding clamping between pipes of different diameters.

[0032] Reference Figure 4 and Figure 5 As shown in this embodiment: the outer wall of the threaded rod 501 is provided with an external thread, and the inner wall of the connecting ring 502 is provided with a threaded groove that matches the external thread of the threaded rod 501. The threads on the outer walls of the two threaded rods 501 are symmetrically distributed. The symmetrical distribution of the threads on the outer walls of the two threaded rods 501 facilitates the rotation of the movable rod 5, thereby causing the two threaded rods 501 to rotate and thus causing the connecting ring 502 to move towards each other.

[0033] Reference Figure 4 and Figure 5As shown in this embodiment: the inner wall of the sleeve ring 505 is provided with a telescopic groove that matches the sliding rod 504, and the outer wall of the fixed rod 503 is provided with a scale. Sufficient welding space is left between the left fixed clamp 2, the right fixed clamp 3 and the movable rod 5 and the fixed rod 503. The scale on the outer wall of the fixed rod 503 allows the operator to accurately adjust the pipe diameter gap clamped and fixed by the left fixed clamp 2 and the right fixed clamp 3. The sufficient welding space left between the left fixed clamp 2, the right fixed clamp 3 and the movable rod 5 and the fixed rod 503 facilitates the welding operation between the left fixed clamp 2 and the right fixed clamp 3 at the joint of the two pipes.

[0034] Working principle: The user rotates the left movable clamping plate 202 and the right movable clamping plate 302, which open via the connecting shaft assembly 4. This allows the left fixed clamping clamp 2 and the right fixed clamping clamp 3 to open and clamp against the outer wall of the pipe. The left fixed clamping clamp 2 and the right fixed clamping clamp 3 can clamp and fix not only straight pipes but also bent pipe openings, enabling the main body 1 to accommodate clamping and matching between various pipes. After clamping the outer wall of the pipe by rotating the left movable clamping plate 202 and the right movable clamping plate 302 to fit against the left fixed clamping plate 201 and the right fixed clamping plate 301, the left movable clamping plate 202 and the left fixed clamping plate 201, and the right movable clamping plate 302 and the right fixed clamping plate 301 are clamped and fixed together by tightening bolts, thus completing the clamping and fixing of the pipe.

[0035] The inner walls of the right fixed clamping plate 301 and the right movable clamping plate 302 are provided with grooves that match the clamping seat 304. The outer wall of the clamping seat 304 has arc-shaped protrusions around its perimeter, which fits against the inner wall of the groove. This facilitates the contact and compression between the outer wall of the clamping seat 304 and the groove, allowing the clamping seat 304 to engage with the inner walls of the right fixed clamping plate 301 and the right movable clamping plate 302. This also drives the variable diameter clamping plate 303 to be fixed inside the right fixed clamping fixture 3, thus changing the pipe diameter of the right fixed clamping fixture 3. This enables the right fixed clamping fixture 3 and the left fixed clamping fixture 2 to perform welding clamping between pipes of different diameters.

[0036] By rotating the movable rod 5, the rotation of the movable rod 5 drives the threaded rods 501 on both sides to rotate. The symmetrical distribution of threads on the outer walls of the two threaded rods 501 facilitates the rotation of the two threaded rods 501 to drive the connecting ring 502 to move towards each other, so that the right fixed clamp 3 and the left fixed clamp 2 are brought closer to each other. The inner wall of the sleeve ring 505 is provided with a telescopic groove that matches the sliding rod 504. The outer wall of the fixed rod 503 is provided with a scale, which facilitates the movement of the right fixed clamp 3 and the left fixed clamp 2 to drive the sleeve ring 505 to slide and extend on the outer wall of the sliding rod 504. The scale on the outer wall of the fixed rod 503 also allows the operator to make precise adjustments to the pipe diameter gap clamped and fixed by the left fixed clamp 2 and the right fixed clamp 3, thereby improving the welding quality of the pipe joint. Sufficient welding space is left between the left fixed clamp 2, the right fixed clamp 3 and the movable rod 5, and the fixed rod 503, which facilitates the welding operation between the left fixed clamp 2 and the right fixed clamp 3 at the joint of the two pipes.

[0037] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A multi-pipe diameter compatible welding butt joint fixing fixture, characterized by, The utility model provides a kind of left and right fixed clamping device, including device body (1), the device body (1) includes left fixed clamping (2) and right fixed clamping (3), and movable rod (5) is arranged between the left fixed clamping (2) and right fixed clamping (3); The left fixed clamping (2) includes a left fixed clamping plate (201), and a left movable clamping plate (202) is arranged above the left fixed clamping plate (201); The right fixed clamping (3) includes a right fixed clamping plate (301), and a right movable clamping plate (302) is arranged above the right fixed clamping plate (301); the inner walls of the right fixed clamping plate (301) and the right movable clamping plate (302) are symmetrically provided with a variable-diameter clamping plate (303); the bottom end of the variable-diameter clamping plate (303) is provided with a clamping seat (304) that penetrates into the interior of the right fixed clamping (3); The connection between the left fixed clamping plate (201) and the back of the left movable clamping plate (202), and the connection between the right fixed clamping plate (301) and the back of the right movable clamping plate (302) are provided with a connecting shaft assembly (4).

2. The multi-pipe diameter compatible welding bell and spigot fixing fixture as claimed in claim 1, wherein: The connecting shaft assembly (4) includes a fixed shaft, a movable shaft, and a rotating pin; the fixed shaft is respectively welded and fixed with the left fixed clamping plate (201) and the right fixed clamping plate (301); the movable shaft is respectively welded and fixed with the left movable clamping plate (202) and the right movable clamping plate (302); and the rotating pin penetrates into the interior of the fixed shaft and the movable shaft.

3. The multi-pipe diameter compatible welding bell and spigot fixing fixture as claimed in claim 1, wherein: The movable rod (5) is located at the front bottom end of the left fixed clamping plate (201) and the right fixed clamping plate (301), and between the left fixed clamping plate (201) and the right fixed clamping plate (301); the front bottom end of the left fixed clamping plate (201) and the right fixed clamping plate (301) is welded and fixed with a connecting ring (502); the two sides of the movable rod (5) are provided with threaded rods (501) that penetrate into the interior of the connecting ring (502); the back bottom end of the left fixed clamping plate (201) and the right fixed clamping plate (301) is welded and fixed with a sleeve ring (505); a fixed rod (503) is arranged between the back of the left fixed clamping plate (201) and the right fixed clamping plate (301); the two sides of the fixed rod (503) are provided with sliding rods (504) that slide and penetrate into the interior of the sleeve ring (505).

4. The multi-pipe diameter compatible welding bell and spigot fixing fixture as claimed in claim 1, wherein: The inner walls of the right fixed clamping plate (301) and the right movable clamping plate (302) are provided with clamping grooves that match the clamping seat (304); the outer wall of the clamping seat (304) is protruded with an arc surface that is attached to the inner wall of the clamping groove; and the front of the left fixed clamping plate (201), the left movable clamping plate (202), the right fixed clamping plate (301), and the right movable clamping plate (302) are fixed by fastening bolts.

5. The multi-pipe diameter compatible welding bell and spigot fixing fixture as claimed in claim 3, wherein: The outer wall of the threaded rod (501) is provided with external threads; the inner wall of the connecting ring (502) is provided with thread grooves that match the external threads of the threaded rod (501); and the external threads of the two threaded rods (501) are symmetrically distributed.

6. The multi-pipe diameter compatible welding bell and spigot fixing fixture as claimed in claim 3, wherein: The inner wall of the sleeve ring (505) is provided with a telescopic sliding groove matched with the sliding rod (504), and the outer wall of the fixed rod (503) is provided with a scale.

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