Steel pipe welding clamp tool

Abstract

The utility model relates to a steel pipe welding clamp tool, and relates to the technical field of steel pipe machining, the steel pipe welding clamp tool comprises a plurality of U-shaped steel pipes used for placing steel pipes for welding, the plurality of U-shaped steel pipes are fixedly connected end to end in sequence to form a base, a connecting block is fixedly connected to the base, and a guide groove is formed in the connecting block; the guide groove is formed in the length direction perpendicular to the U-shaped steel pipe where the guide groove is located, the two ends of the guide groove penetrate through the connecting block, a first mounting block is arranged on the base, and the first mounting block is embedded and slides in the guide groove. The side, away from the base, of the first mounting block is fixedly connected with two positioning columns used for abutting against the two sides of the steel pipe so as to limit displacement of the steel pipe in the direction perpendicular to the length direction of the steel pipe. According to the fixture tool, the first mounting block drives the positioning column to slide, so that the fixture tool adapts to the size change of the base, and the universality effect of the fixture tool is improved.

Description

Technical Field

[0001] This application relates to the field of steel pipe processing technology, and in particular to a steel pipe welding fixture. Background Technology

[0002] Steel pipes are steel materials whose length is much greater than their diameter or circumference. Due to their high structural strength, steel pipes are widely used in furniture support frames. In practical applications, multiple steel pipes are often welded together.

[0003] In related technologies, refer to Figure 1 A steel pipe welding fixture includes four U-shaped steel pipes 11. The four U-shaped steel pipes 11 cooperate to form a frame-shaped base 1. Each of the four U-shaped steel pipes 11 is fixedly connected with a positioning post 23 for positioning the steel pipe to be welded. The welding process of the steel pipe is usually as follows: the steel pipe to be welded is placed on the U-shaped steel pipe 11 and fixed around it by the positioning post 23. The cross-section of the steel pipe to be welded is a bevel, so as to form a right angle with the end face of another steel pipe to be welded, so that the steel pipes to be welded cooperate to form a frame-shaped structure similar to the base 1.

[0004] Regarding the aforementioned technologies, the inventors believe that, as can be seen from the above structure and process, the dimensions of the fixture determine the dimensions of the frame structure formed by the steel pipe to be welded. Under normal circumstances, the dimensions of the steel pipe to be welded are already determined before welding. However, during the welding process of the fixture, the fixture expands after being heated, causing the actual dimensions of the fixture to differ from the originally expected dimensions. This results in the steel pipe with the determined dimensions being unable to be placed into the fixture, which is not conducive to the subsequent welding work of the steel pipe. There is still room for improvement. Utility Model Content

[0005] In order to improve the problem that the actual size of the fixture is different from the original expected size when the fixture expands after being heated during the welding process, thus making it impossible to put the steel pipe of a certain size into the fixture, this application provides a steel pipe welding fixture.

[0006] The steel pipe welding fixture provided in this application adopts the following technical solution:

[0007] A steel pipe welding fixture includes several U-shaped steel pipes for placing steel pipes for welding. The U-shaped steel pipes are sequentially and fixedly connected end to end to form a base. A connecting block is fixedly connected to the base. The connecting block is provided with a guide groove. The guide groove is arranged along the length direction perpendicular to the U-shaped steel pipe. The two ends of the guide groove pass through the connecting block. A first mounting block is provided on the base. The first mounting block is embedded and slides in the guide groove. Two positioning posts are fixedly connected to the side of the first mounting block away from the base to abut against the two sides of the steel pipe to limit the displacement of the steel pipe along the length direction perpendicular to itself.

[0008] By adopting the above technical solution, if the U-shaped steel pipe expands due to heat during the welding process of the base, the first mounting block can drive the positioning column to make a certain displacement along the guide groove, thereby adapting to the size change of the base. This allows the steel pipe with a fixed size to still be placed on the fixture, and then the first mounting block and the connecting block are welded and fixed, ensuring that the subsequent welding work of the steel pipe can be carried out smoothly and improving the versatility of the fixture.

[0009] Optionally, the first mounting block is provided with a first elongated hole, which is set along the length direction of the guide groove. A bolt is threaded onto the connecting block, the bolt passes through the first elongated hole, and the bolt head abuts against the first mounting block.

[0010] By adopting the above technical solution, when the first mounting block slides in the guide groove to the required size of the steel pipe to be welded, the bolt is tightened so that the bolt head abuts against the first mounting block to pre-fix the first mounting block. This makes it less likely for the position of the first mounting block to shift during the welding process of the first mounting block and the connecting block, thus improving the stability of welding the first mounting block.

[0011] Optionally, the system also includes a positioning assembly for positioning the steel pipe during installation. The positioning assembly includes a second mounting block, a spring, and a positioning plate for abutting against one end of the steel pipe. The second mounting block is fixedly connected to the base. A limiting groove is provided on the side of the second mounting block away from the base. The positioning plate is embedded in the limiting groove and extends beyond it. One end of the spring abuts against the bottom of the limiting groove, and the other end of the spring abuts against the end of the positioning plate near the base.

[0012] By adopting the above technical solution, when the steel pipe is placed on the first mounting block, one end of the steel pipe abuts against the positioning plate, so that the position of the steel pipe is exactly what is needed for welding. There is no need for the operator to place the second steel pipe on the first mounting block and then adjust the position of the steel pipe along its own length, which improves the convenience of the operator in positioning the steel pipe.

[0013] Optionally, the second mounting block is provided with a second elongated hole, which is arranged along the sliding direction of the positioning plate. The second mounting block is also provided with a positioning hole, which is connected to the end of the second elongated hole near the base. The positioning plate is provided with a third elongated hole, which is arranged along the length direction perpendicular to the second elongated hole. The second mounting block is provided with a limiting post, which includes a through-hole. The through-hole passes through the second elongated hole and the third elongated hole in sequence. When the through-hole passes through the positioning hole, the end of the positioning plate away from the base is flush with the side of the second mounting block away from the base.

[0014] By adopting the above technical solution, after the positioning plate completes the positioning of the steel pipe, the positioning plate is moved to the side closer to the base, so that the limiting post moves to the end of the second long slot near the base. Then the limiting post is moved into the positioning hole to restrict the positioning plate from moving away from the base. At this time, the positioning plate is located in the limiting groove and does not interfere with the welding of the steel pipe, which improves the convenience of locking the position of the positioning plate when it is not being positioned.

[0015] Optionally, both ends of the through-hole are fixedly connected to limit blocks, and the two limit blocks correspond one-to-one and abut against the two sides of the second mounting block respectively.

[0016] By adopting the above technical solution, when the through part tends to detach from the second mounting block, the limiting block abuts against the side wall of the second mounting block, restricting the movement of the through part and preventing it from detaching from the second mounting block, thereby improving the stability of the through part on the second mounting block.

[0017] Optionally, the limiting post further includes a gripping part, which is fixedly connected to one end of the through part.

[0018] By adopting the above technical solution, the gripping part is designed to increase the area of ​​the gripping part when the operator adjusts the limit post, thereby improving the convenience for the operator to adjust the position of the limit post.

[0019] Optionally, the base is provided with an oblong hole, which is arranged along the thickness direction of the positioning plate. A through-post is fixedly connected to the side of the second mounting block near the base. The through-post passes through and slides in the oblong hole. An abutment block is fixedly connected to the end of the through-post away from the second mounting block. The abutment block abuts against the base, and the second mounting block abuts against the end of the base away from the abutment block.

[0020] By adopting the above technical solution, when the first steel pipe placed by the operator is located on the first mounting block at different positions on the base, the positioning plate can be slid to the end of the steel pipe that the operator needs to install away from the waist-shaped hole. At this time, the steel pipe is placed on the first mounting block and one end of the steel pipe is abutted against the positioning plate. The steel pipe is located in the position that needs to be placed when welding, which improves the versatility of the fixture for installing the first steel pipe.

[0021] Optionally, magnetic sheets are fixedly connected to the side walls at both ends of the waist-shaped hole. When the through-post slides to one end of the waist-shaped hole, the through-post is magnetically attracted to the magnetic sheet.

[0022] By adopting the above technical solution, when the through-post slides to one end near the waist-shaped hole, the through-post is magnetically attracted to the magnetic sheet fixedly connected to the inner wall of the end of the waist-shaped hole, which improves the stability of fixing the through-post to the inner wall of one end of the waist-shaped hole.

[0023] Optionally, the positioning plate has rubber surfaces on both sides that abut against the steel pipe.

[0024] By adopting the above technical solution, the rubber surface provides a buffer for the steel pipe when the moving steel pipe abuts its end face against the positioning plate, reducing the impact force of the steel pipe on the positioning plate and improving the service life of the positioning plate.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. The first mounting block drives the positioning column to slide, thereby adapting to the size changes of the base, so that the steel pipe can still be put into the fixture, improving the versatility of the fixture;

[0027] 2. The first mounting block is pre-fixed with bolts, which makes it less likely for the first mounting block and the connecting block to shift during welding, thus improving the stability of welding the first mounting block;

[0028] 3. The positioning plate positions the first steel pipe placed on the first mounting block, which improves the convenience for operators to accurately place the steel pipe to be welded at the welding position. Attached Figure Description

[0029] Figure 1 This is a structural schematic diagram of a steel pipe welding fixture in the related technology of this application.

[0030] Figure 2 This is a structural schematic diagram of a steel pipe welding fixture in an embodiment of this application.

[0031] Figure 3This is an exploded view of the adjustment component in the embodiments of this application.

[0032] Figure 4 This is an exploded view of the second mounting block, positioning plate, and spring in an embodiment of this application.

[0033] Figure 5 This is an exploded view of the second mounting block, positioning plate, and limiting post in the embodiments of this application.

[0034] Explanation of reference numerals in the attached drawings: 1. Base; 11. U-shaped steel pipe; 111. Waist-shaped hole; 1111. Magnetic sheet; 2. Adjustment component; 21. Connecting block; 211. Guide groove; 22. First mounting block; 221. First long waist hole; 23. Positioning post; 24. Bolt; 3. Positioning component; 31. Second mounting block; 311. Through post; 3111. Abutment block; 312. Limiting groove; 313. Second long waist hole; 314. Positioning hole; 32. Positioning plate; 321. Rubber surface; 322. Third long waist hole; 33. Spring; 34. Limiting post; 341. Through part; 3411. Limiting block; 342. Grip part. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 2-5 This application will be described in further detail.

[0036] This application discloses a steel pipe welding fixture.

[0037] Reference Figure 2 The steel pipe welding fixture includes a base 1, an adjusting component 2, and a positioning component 3. The base 1 is used to place the steel pipe to be welded. The adjusting component 2 is mounted on the base 1 to adjust the size of the space available for placing the steel pipe in the fixture. The positioning component 3 is mounted on the base 1 to position the placed steel pipe to be welded.

[0038] Reference Figure 2 and Figure 3The base 1 includes several U-shaped steel pipes 11. In this embodiment, four U-shaped steel pipes 11 are used as an example. The four U-shaped steel pipes 11 are connected end to end in sequence, and adjacent U-shaped steel pipes 11 are welded together. The adjustment assembly 2 includes connecting blocks 21, first mounting blocks 22, positioning posts 23, and bolts 24. The number of connecting blocks 21 corresponds to the number of U-shaped steel pipes 11. In this embodiment, the number of connecting blocks 21 is twice the number of U-shaped steel pipes 11. Each U-shaped steel pipe 11 has a connecting block 21 fixedly connected to both ends. The side of the connecting block 21 away from the base 1 has a guide groove 211. The guide groove 211 is set along the length direction perpendicular to the U-shaped steel pipe 11 where the connecting block 21 is located. The two ends of the guide groove 211 pass through the connecting block 21 for the first mounting blocks 22 to be installed. The number of first mounting blocks 22 is the same as the number of connecting blocks 21. The first connecting blocks 21 are slidably connected in the guide groove 211. Positioning pins 23 are fixedly connected to the side of the first mounting block 22 away from the connecting block 21 to fix the steel pipe to be welded. Each first mounting block 22 has two positioning pins 23. When the steel pipe to be welded is placed on the fixture, the two positioning pins 23 abut against the two sides of the steel pipe respectively to prevent displacement of the steel pipe in a direction perpendicular to its length. The first mounting block 22 has a first elongated hole 221, which is set along the sliding direction of the first mounting block 22. Bolts 24 pass through the first elongated hole 221 and are threaded onto the connecting block 21. The bolt head of the bolt 24 abuts against the side of the first mounting block 22 away from the connecting block 21, so that after the operator adjusts the first mounting block 22 to the position required for welding the steel pipe, the bolt 24 is rotated to pre-fix the first mounting block 22.

[0039] Reference Figure 4 and Figure 5 The positioning component 3 includes a second mounting block 31, a positioning plate 32, a spring 33, and a limiting post 34. The welded joints of two adjacent U-shaped steel pipes 11 have oblong holes 111. A through post 311 is fixedly connected to the side of the second mounting block 31 closest to the base 1. The through post 311 passes through and slides within the oblong hole 111, allowing the second mounting block 31 to slide and connect to the base 1. An abutment block 3111 is fixedly connected to the end of the through post 311 away from the second mounting block 31. The abutment block 3111 abuts against the side of the base 1 away from the second mounting block 31, and the second mounting block 31 abuts against the side of the base 1 away from the abutment block 3111. The two cooperate to prevent the through post 311 from detaching from the oblong hole 111. Magnets 1111 are fixedly connected to the inner walls of both ends of the waist-shaped hole 111 along its own length direction. When the second mounting block 31 slides to one end close to the waist-shaped hole 111, the through post 311 is magnetically attracted to the magnet 1111 to fix the second mounting block 31.

[0040] Reference Figure 4 and Figure 5 The second mounting block 31 has a limiting groove 312 on the side away from the base 1. A positioning plate 32 is embedded in the limiting groove 312 and extends out of the limiting groove 312 to abut against one end of the steel pipe to be welded, thereby positioning the steel pipe to be welded. Both sides of the positioning plate 32 that abut against the steel pipe to be welded have rubber surfaces 321 to reduce the impact force of the steel pipe on the positioning plate 32 when the steel pipe abuts against the positioning plate. The portion of the positioning plate 32 located in the limiting groove 312 abuts against the groove wall of the limiting groove 312, so that the positioning plate 32 does not wobble when it abuts against the steel pipe to be welded. A spring 33 is embedded in the limiting groove 312, with one end of the spring abutting against the bottom of the limiting groove 312 and the other end abutting against the positioning plate 32. When the side of the positioning plate 32 away from the base 1 is aligned with the side of the second mounting block 31 away from the base 1, the spring 33 is in a compressed state. The second mounting block 31 has a second elongated hole 313 and a positioning hole 314. The second elongated hole 313 is arranged along the sliding direction of the positioning plate 32, and the positioning hole 314 is located at the end of the second elongated hole 313 near the base 1 and communicates with the second elongated hole 313. The positioning plate 32 has a third elongated hole 322, which is arranged along a length direction perpendicular to the second elongated hole 313. The limiting post 34 includes a through-hole 341 and a gripping part 342. The through-hole 341 passes through the second elongated hole 313 and the third elongated hole 322 in sequence. Both ends of the through-hole 341 are fixedly connected to limiting blocks 3411. The two limiting blocks 3411 are respectively abutted against the two sides of the second mounting block 31 to prevent the through-hole 341 from disengaging from the second elongated hole 313 and the third elongated hole 322. The gripping part 342 is fixedly connected to one end of the through-hole 341 for easy gripping by the operator. When the operator holds the gripping part 342 and moves the through part 341 toward the side closer to the base 1, the positioning plate 32 moves synchronously toward the side closer to the base 1. When the through part 341 moves into the positioning hole 314, the side of the positioning plate 32 away from the base 1 and the side of the second mounting block 31 away from the base 1 are flush, and the sliding of the positioning plate 32 in the limiting groove 312 is locked.

[0041] The implementation principle of a steel pipe welding fixture according to an embodiment of this application is as follows: The steel pipe to be welded is placed on the first mounting block 22. At this time, two positioning posts 23 on the same first mounting block 22 abut against both sides of the steel pipe to be welded. The steel pipe to be welded is pushed to either end, so that the steel pipe abuts against the positioning plate 32 to complete the positioning of the steel pipe to be welded. At this time, the second mounting block 31 is located at the end of the oblong hole 111 away from the steel pipe, and the through post 311 is magnetically attracted to the magnetic piece 1111 at the end of the oblong hole 111 away from the steel pipe. Then, the gripping part 342 drives the positioning plate 32 to move towards the bottom of the limiting groove 312. When the positioning plate 32 moves away from the base 1... When one side of the second mounting block 31 is aligned with the side away from the base 1, move the through part 341 into the positioning hole 314 to lock the positioning plate 32; place the remaining steel pipes to be welded onto the corresponding first mounting block 22 in sequence; if there is a deviation between the size of the fixture and the size of the steel pipe to be welded, loosen the bolt 24 so that the first mounting block 22 drives the positioning column 23 to slide along the guide groove 211 to the appropriate position, and then tighten the bolt 24 to fix it; finally, weld the steel pipe; when the operator believes that the size of the fixture is completely suitable for the size of the steel pipe to be welded after multiple weldings, weld the first mounting block 22 and the connecting block 21 to fix them.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A steel pipe welding fixture, characterized in that: The system includes several U-shaped steel pipes (11) for placing steel pipes for welding. The U-shaped steel pipes (11) are connected end to end in sequence to form a base (1). A connecting block (21) is fixedly connected to the base (1). The connecting block (21) is provided with a guide groove (211). The guide groove (211) is set along the length direction perpendicular to the U-shaped steel pipe (11) it is located in. The two ends of the guide groove (211) pass through the connecting block (21). A first mounting block (22) is provided on the base (1). The first mounting block (22) is embedded and slides in the guide groove (211). Two positioning columns (23) are fixedly connected to the side of the first mounting block (22) away from the base (1) to abut against the two sides of the steel pipe to limit the displacement of the steel pipe along the length direction perpendicular to itself.

2. The steel pipe welding fixture according to claim 1, characterized in that: The first mounting block (22) is provided with a first elongated hole (221), which is arranged along the length direction of the guide groove (211). The connecting block (21) is threaded with a bolt (24), which passes through the first elongated hole (221) and the head of the bolt (24) abuts against the first mounting block (22).

3. The steel pipe welding fixture according to claim 1, characterized in that: It also includes a positioning component (3) for positioning the installation of the steel pipe. The positioning component (3) includes a second mounting block (31), a spring (33) and a positioning plate (32) for abutting against one end of the steel pipe. The second mounting block (31) is fixedly connected to the base (1). The second mounting block (31) has a limiting groove (312) on the side away from the base (1). The positioning plate (32) is embedded in the limiting groove (312) and extends to the outside of the limiting groove (312). One end of the spring (33) abuts against the bottom of the limiting groove (312), and the other end of the spring (33) abuts against the end of the positioning plate (32) near the base (1).

4. The steel pipe welding fixture according to claim 3, characterized in that: The second mounting block (31) is provided with a second elongated slot (313), which is arranged along the sliding direction of the positioning plate (32). The second mounting block (31) is also provided with a positioning hole (314), which is connected to the second elongated slot (313) at one end near the base (1). The positioning plate (32) is provided with a third elongated slot (322), which is perpendicular to the second elongated slot (313). 13) The length direction is set, and the second mounting block (31) is provided with a limiting post (34). The limiting post (34) includes a through part (341). The through part (341) passes through the second long waist hole (313) and the third long waist hole (322) in sequence. When the through part (341) passes through the positioning hole (314), the end of the positioning plate (32) away from the base (1) and the side of the second mounting block (31) away from the base (1) are flush.

5. The steel pipe welding fixture according to claim 4, characterized in that: Both ends of the through part (341) are fixedly connected to limit blocks (3411), and the two limit blocks (3411) are respectively abutted against the two sides of the second mounting block (31).

6. The steel pipe welding fixture according to claim 5, characterized in that: The limiting post (34) also includes a gripping part (342), which is fixedly connected to one end of the through part (341).

7. The steel pipe welding fixture according to claim 3, characterized in that: The base (1) is provided with a waist-shaped hole (111), which is arranged along the thickness direction of the positioning plate (32). The second mounting block (31) is fixedly connected to a through post (311) on the side near the base (1). The through post (311) passes through and slides in the waist-shaped hole (111). The end of the through post (311) away from the second mounting block (31) is fixedly connected to an abutment block (3111). The abutment block (3111) abuts against the base (1). The second mounting block (31) abuts against the end of the base (1) away from the abutment block (3111).

8. A steel pipe welding fixture according to claim 7, characterized in that: Magnetic sheets (1111) are fixedly connected to the side walls at both ends of the waist-shaped hole (111). When the through-post (311) slides to one end of the waist-shaped hole (111), the through-post (311) is magnetically attracted to the magnetic sheet (1111).

9. A steel pipe welding fixture according to claim 3, characterized in that: The positioning plate (32) is used to abut against the steel pipe and both sides are provided with rubber surfaces (321).

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