External quick positioning clamps for small pipe welding

Abstract

This utility model relates to the technical field of welding auxiliary tools, and in particular to a small external quick positioning clamp for pipe welding. It includes a fixed clamp base and a movable clamp. A fixed handle is located at the center of one side of the fixed clamp base. One end of the top surface of the fixed handle has a translation groove, and the other end has a hinge groove. One end of the movable clamp corresponds to one end of the fixed clamp base, and a hinge base is located at the center of the other end of the movable clamp. Electronic pressure gauges are symmetrically located on both sides of one end of the fixed handle. A connecting wire is attached to the other end of the electronic pressure gauge, and a tension spring is attached to the other end of the connecting wire. Grooves are located on the side of the fixed handle and the top surface of the fixed clamp base. The shape and depth of the grooves are the same as the shape and thickness of the connecting wire and the tension spring. This utility model, by setting a fine-tuning screw and electronic pressure gauges, ensures stable clamping force, effectively preventing displacement of the steel pipe during welding, thereby improving welding accuracy and quality, and reducing welding defects.

Description

Technical Field

[0001] This utility model relates to the technical field of welding auxiliary tools, and in particular to a small pipe welding external quick positioning clamp. Background Technology

[0002] In pipe welding operations, for circular steel pipes with a diameter of approximately 30-50mm, precise and rapid positioning is a key step in ensuring welding quality.

[0003] Currently, traditional positioning methods rely heavily on manual measurement and simple supports, which are not only inefficient and make it difficult to ensure a uniform welding gap between the two steel pipes, but also prone to pipe displacement during operation, resulting in poor welding accuracy and unstable quality. Furthermore, some existing positioning tools have complex structures and poor versatility, making them unsuitable for the rapid clamping and positioning needs of small pipes.

[0004] Therefore, developing a small pipe welding positioning clamp that can quickly and accurately position, is easy to operate, and has strong versatility is of great practical significance. Utility Model Content

[0005] Technical objective: In order to overcome the shortcomings of the existing technology, this utility model provides a small external quick positioning clamp for pipe welding.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: It includes a fixed clamp and a movable clamp. A fixed handle is provided at the center of one side of the fixed clamp. A translation groove is opened at one end of the center of the top surface of the fixed handle, and the translation groove passes through one end of the fixed handle. A hinge groove is opened at the other end of the center of the top surface of the fixed handle. One end of the movable clamp corresponds to one end of the fixed clamp. A hinge seat is provided at the center of the other end of the movable clamp. The hinge seat is hinged inside the hinge groove. Electronic pressure gauges are symmetrically arranged on both sides of one end of the fixed handle. A connecting wire is provided at the other end of the electronic pressure gauge. A tension spring is provided at the other end of the connecting wire. A wire groove is provided on the side of the fixed handle and the top surface of the fixed clamp. The shape and depth of the wire groove are the same as the shape and thickness of the connecting wire and the tension spring.

[0007] Preferably, the corresponding ends of the fixed clamp and the movable clamp are U-shaped, and the two grooves are located above the U-shaped end face of the fixed clamp.

[0008] Preferably, the bottom end of the hinge seat is hinged inside the hinge groove, and a movable clamp handle is connected to the top of the hinge seat.

[0009] Preferably, a lever is hinged to the lower part of the other end of the movable clamp handle, and the movable clamp handle and the fixed handle are on the same horizontal line.

[0010] Preferably, a connecting rod is provided between the fixed handle and the movable clamp handle, one end of the connecting rod is hinged to the movable clamp handle, and the other end of the connecting rod is provided with a sliding pin, which is located inside the translation groove; a fine-tuning screw is provided at one end of the outer side of the translation groove.

[0011] Preferably, an installation hook is provided inside the hinge slot, and the installation hook is located between the connecting rod and the hinge seat; a tension spring is provided between the movable clamp handle and the fixed handle, one end of the tension spring is connected to the hinge seat, and the other end of the tension spring is connected to the installation hook.

[0012] The beneficial effects of this utility model are:

[0013] 1. This utility model provides a small external quick positioning clamp for pipe welding. By setting a fixed clamp seat and a movable clamp, it can be opened and closed quickly and is easy to operate. It allows operators to complete the positioning and clamping of two steel pipes in a short time. Compared with the traditional manual positioning method, it greatly shortens the positioning time and improves the overall efficiency of welding work.

[0014] 2. This utility model provides a small external quick positioning clamp for pipe welding. By setting a fine-tuning screw and an electronic pressure gauge, the precise fine-tuning and pressure monitoring functions can ensure that a uniform and appropriate welding gap is reserved between two steel pipes, while ensuring stable clamping force. This effectively prevents the steel pipes from shifting during the welding process, thereby improving welding accuracy and welding quality and reducing the occurrence of welding defects.

[0015] 3. This utility model provides a small external quick positioning clamp for pipe welding. The ergonomic design of the operating components makes the clamp operation labor-saving and convenient, reducing the labor intensity of the operator. At the same time, the quick positioning and simple fine-tuning operation process is easy to master, and even novices can quickly become proficient in using it, improving the convenience of operation.

[0016] 4. This utility model provides a small external quick positioning clamp for pipe welding, which can be adapted to various pipe diameters, expanding the scope of tool application and improving the cost-effectiveness and practicality of the tool. Attached Figure Description

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

[0018] Figure 2 This is a rear view of the present invention;

[0019] Figure 3 This is an exploded view of the present invention;

[0020] Figure 4 This is a cross-sectional view of the present invention;

[0021] Figure 5 This is a cross-sectional view of the present invention in its working state.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Fixed clamp; 11. Fixed handle; 12. Fine-tuning screw; 13. Electronic pressure gauge; 14. Connecting wire; 15. Wire groove; 16. Translation groove; 17. Hinge groove; 18. Mounting hook; 2. Movable clamp; 21. Movable clamp handle; 22. Lever; 23. Hinge seat; 3. Connecting rod; 31. Sliding pin; 4. Tension spring; 5. Electronic pressure element. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1 To be continued Figure 5 The principles and features of this utility model are described, and the examples given are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0025] Please see Figures 1-5 A small external quick-positioning clamp for pipe welding includes a fixed clamp 1 and a movable clamp 2. A fixed handle 11 is located at the center of one side of the fixed clamp 1. A translation groove 16 is formed at one end of the center of the top surface of the fixed handle 11, penetrating one end of the fixed handle 11. A hinge groove 17 is formed at the other end of the center of the top surface of the fixed handle 11. One end of the movable clamp 2 corresponds to one end of the fixed clamp 1. A hinge seat 23 is located at the center of the other end of the movable clamp 2, hinged inside the hinge groove 17. Electronic pressure gauges 13 are symmetrically arranged on both sides of one end of the fixed handle 11. A connecting wire 14 is provided at the other end of the electronic pressure gauge 13, and a tension spring 4 is provided at the other end of the connecting wire 14. A wire groove 15 is provided on the side of the fixed handle 11 and the top surface of the fixed clamp 1. The shape and depth of the wire groove 15 correspond to those of the connecting wire 14. The shape and thickness of spring 4 are the same as those of clamp 1 and spring 2. The clamp body is formed by clamp 1 and movable clamp 2. Movable clamp 2 is hinged to clamp 1 by hinge seat 23, so that clamp 1 and movable clamp 2 can clamp the pipe to be welded. One end of clamp 1 is extended by fixed handle 11. Translation groove 16 and hinge groove 17 are opened on fixed handle 11. Translation groove 16 and hinge groove 17 are connected to each other. Connection wire 14 and spring 4 are attached to clamp 1 and fixed handle 11 by wire groove 15. This makes it easy to attach connection wire 14 and electronic pressure element 5 inside clamp 1 and fixed handle 11, avoiding the influence of connection wire 14 and electronic pressure element 5 on clamping of clamp 1 and movable clamp 2. The pressure value of clamping force between clamp 1 and movable clamp 2 is transmitted to electronic pressure gauge 13 by electronic pressure element 5, so as to detect the clamping force between clamp 1 and movable clamp 2.

[0026] Please see Figures 1-5The fixed clamp 1 and the movable clamp 2 are U-shaped at one end, and the two wire grooves 15 are located above the U-shaped end face of the fixed clamp 1. The U-shaped fixed clamp 1 and the movable clamp 2 make it easy to clamp the two sections of pipe to be welded on both sides of the fixed clamp 1 and the movable clamp 2. The fixed clamp 1 and the movable clamp 2 are made of HT200 material, which has high strength and stability.

[0027] Please see Figures 1-5 The bottom end of the hinge seat 23 is hinged inside the hinge groove 17, and a movable clamp handle 21 is connected above the hinge seat 23. By hinged the hinge seat 23 inside the hinge groove 17, the rotation angle of the hinge seat 23 is increased, thereby increasing the range of the angle between the movable clamp 2 and the fixed clamp seat 1. The movable clamp handle 21 drives the hinge seat 23 to rotate, thereby driving the movable clamp 2 to rotate and clamp the pipe.

[0028] Please see Figures 1-5 A lever 22 is hinged to the lower end of the other end of the movable clamp handle 21. The movable clamp handle 21 and the fixed handle 11 are located on the same horizontal line. By setting the movable clamp handle 21 and the fixed handle 11 on the same horizontal line, it is convenient to hold the fixed handle 11 and the movable clamp handle 21 at the same time. By operating the fixed handle 11 and the movable clamp handle 21, the opening and closing action of the movable clamp 2 relative to the fixed clamp seat 1 can be realized. The design of the movable handle conforms to the ergonomic principle, making operation effortless and convenient.

[0029] Please see Figures 1-5 A connecting rod 3 is provided between the fixed handle 11 and the movable clamp handle 21. One end of the connecting rod 3 is hinged to the movable clamp handle 21, and the other end of the connecting rod 3 is provided with a sliding pin 31, which is located inside the translation groove 16. A fine-tuning screw 12 is provided at one end of the outer side of the translation groove 16. By rotating the fine-tuning screw 12, the fine-tuning screw 12 moves within the translation groove 16. During the movement, the fine-tuning screw 12 pushes the connecting rod 3. Under the action of the sliding pin 31, the bottom end of the connecting rod 3 slides within the translation groove 16. During the process, the other end of the connecting rod 3 is rotated on the movable clamp handle 21, which in turn drives the movable clamp handle 21 to move. As the movable clamp handle 21 moves, it drives the hinge seat 23 to rotate in the hinge groove 17, thus realizing the mutual movement between the movable clamp 2 and the fixed clamp seat 1. When the connecting rod 3 moves inside the translation groove 16, the side of the connecting rod 3 drives the lever 22 to rotate inside the movable clamp handle 21. When the fine-tuning screw 12 moves to the outside of the translation groove 16, the lever 22 drives the connecting rod 3 to move to the outside of the translation groove 16 through the movable lever 22.

[0030] Please see Figures 1-5The hinge groove 17 is equipped with an installation hook 18, which is located between the connecting rod 3 and the hinge seat 23. A tension spring 4 is provided between the movable clamp handle 21 and the fixed handle 11. One end of the tension spring 4 is connected to the hinge seat 23, and the other end of the tension spring 4 is connected to the installation hook 18. The installation hook 18 fixes one end of the tension spring 4, and the tension spring 4 applies a continuous tension to the hinge seat 23, thereby causing the movable clamp 2 to apply a certain downward pressure to the pipe. The connecting rod 3 drives the movement of the hinge seat 23, reducing the deformation of the tension spring 4, and thus adjusting the pressure of the movable clamp 2 on the pipe. The tension spring 4 is made of 65Mn material, which has good elasticity and fatigue resistance.

[0031] During use, the movable clamp handle 21 is operated to move the movable clamp 2, causing the movable clamp 2 to open relative to the fixed clamp seat 1 and fit over the two circular steel pipes with a diameter of approximately 30-50mm to be welded. Under the action of the tension spring 4, the fixed clamp seat 1 and the movable clamp 2 initially clamp the steel pipes. The electronic pressure element 5 detects the downward pressure of the movable clamp 2 on the circular steel pipes. At this time, the pressure value displayed on the electronic pressure gauge 13 is observed to determine whether the clamping degree of the steel pipes is appropriate. If the gap between the two steel pipes does not meet the welding requirements, the fine-tuning screw 12 is rotated to fine-tune the position of the fixed clamp seat 1 and the movable clamp 2, precisely adjusting the gap between the two steel pipes and the clamping pressure until the ideal welding positioning state is achieved. During the welding process, the value of the electronic pressure gauge 13 is continuously monitored, and the clamping pressure is finely adjusted in a timely manner according to the actual situation to prevent the steel pipes from shifting and ensure the smooth progress of the welding work. After welding is completed, the movable clamp handle 21 is operated again to open the clamps and remove them from the steel pipes. This achieves efficient and precise pipe welding positioning, improving welding quality and ease of operation.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A small external quick positioning clamp for pipe welding, comprising a fixed clamp (1) and a movable clamp (2), characterized in that: A fixed handle (11) is provided at the center of one side of the fixed clamp (1). A translation groove (16) is provided at one end of the center of the top surface of the fixed handle (11). The translation groove (16) passes through one end of the fixed handle (11). A hinge groove (17) is provided at the other end of the center of the top surface of the fixed handle (11). One end of the movable clamp (2) corresponds to one end of the fixed clamp (1). A hinge seat (23) is provided at the center of the other end of the movable clamp (2). The hinge seat (23) is hinged inside the hinge groove (17). Electronic pressure gauges (13) are symmetrically arranged on both sides of one end of the fixed handle (11). A connecting line (14) is provided at the other end of the electronic pressure gauge (13). A tension spring (4) is provided at the other end of the connecting line (14). A wire groove (15) is provided on the side of the fixed handle (11) and the top surface of the fixed clamp (1). The shape and depth of the wire groove (15) are the same as the shape and thickness of the connecting line (14) and the tension spring (4).

2. The small pipe welding external quick positioning clamp according to claim 1, characterized in that: The corresponding ends of the fixed clamp (1) and the movable clamp (2) are U-shaped, and the two wire grooves (15) are located above the U-shaped end face of the fixed clamp (1).

3. The small pipe welding external quick positioning clamp according to claim 2, characterized in that: The bottom end of the hinge seat (23) is hinged to the inside of the hinge groove (17), and a movable clamp handle (21) is connected to the top of the hinge seat (23).

4. The small pipe welding external quick positioning clamp according to claim 3, characterized in that: A lever (22) is hinged to the lower end of the other end of the movable clamp handle (21), and the movable clamp handle (21) and the fixed handle (11) are located on the same horizontal line.

5. The small pipe welding external quick positioning clamp according to claim 4, characterized in that: A connecting rod (3) is provided between the fixed handle (11) and the movable clamp handle (21). One end of the connecting rod (3) is hinged to the movable clamp handle (21), and the other end of the connecting rod (3) is provided with a sliding pin (31). The sliding pin (31) is located inside the translation groove (16). A fine-tuning screw (12) is provided at one end of the outer side of the translation groove (16).

6. The small pipe welding external quick positioning clamp according to claim 5, characterized in that: The hinge groove (17) is provided with an installation hook (18) located between the connecting rod (3) and the hinge seat (23); a tension spring (4) is provided between the movable clamp handle (21) and the fixed handle (11), one end of the tension spring (4) is connected to the hinge seat (23), and the other end of the tension spring (4) is connected to the installation hook (18).

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