A bellows outer diameter welding fixture base

Abstract

The utility model relates to the technical field of fixture, disclose a corrugated pipe outer diameter welding fixture base, including the bottom plate, the upper surface of bottom plate is fixedly connected with the base, the top of base is equipped with the pipe assembly, the inside of base is equipped with the positioning assembly, this corrugated pipe outer diameter welding fixture base, relative to traditional technology, has the following advantages: through the cooperation between bottom plate, base and pipe assembly, the top of base is equipped with the pipe assembly, the top of the multiple even distribution's vertical pole is fixedly connected with the block, and the upper surface of center block is provided with the right angle groove, places the corrugated pipe in the right angle groove, when the external pressure block exerts pressure, multiple blocks can be according to the actual size and shape of corrugated pipe adaptive adjustment, form'' cambered surface'' and corrugated pipe contact tightly, the two sides below the outer wall of corrugated pipe are evenly forced to clamp, greatly strengthen the stability of clamping, improved the adaptability to different size corrugated pipe, the practicality has improved obviously.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, specifically to a base for a corrugated pipe outer diameter welding fixture. Background Technology

[0002] Corrugated pipes mainly include metal corrugated pipes, corrugated expansion joints, corrugated heat exchange tubes, diaphragm boxes, and metal flexible hoses. Metal corrugated pipes are mainly used to compensate for pipeline thermal deformation, damping, and absorbing pipeline settlement deformation. They are widely used in industries such as petrochemicals, instrumentation, aerospace, chemicals, power, cement, and metallurgy. When welding the outer diameter of metal corrugated pipes, a corrugated pipe outer diameter welding fixture is required to facilitate fixing and welding.

[0003] Among the currently disclosed technologies, the utility model patent with the authorized public account CN217045256U discloses a corrugated pipe outer diameter welding fixture, which relates to the field of corrugated pipe technology. It includes a concave limiting block and a bottom mounting plate. Although it can clamp the corrugated pipe relatively stably, the base (concave limiting block) structure in the fixture has a limited area at the corrugated pipe and the base ring when clamping corrugated pipes with mismatched outer diameters. It is only a line at the bottom end, which cannot effectively apply force to clamp the two sides of the bottom end of the outer wall of the corrugated pipe. It is not convenient to keep the corrugated pipe in a highly stable clamping state. Its practical performance needs to be improved. Utility Model Content

[0004] The purpose of this utility model is to provide a corrugated pipe outer diameter welding fixture base, which can effectively apply force to clamp the bottom two sides of the outer wall of the corrugated pipe, making it easy to clamp the corrugated pipe with high stability in different external environments, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a corrugated pipe outer diameter welding fixture base, including a base plate, a base fixed to the upper surface of the base plate, a pipe-supporting assembly above the base, and a positioning assembly inside the base.

[0006] Preferably, the abutment assembly includes: a plurality of vertical rods, which are evenly distributed above the base. The vertical rods are connected to the base by insertion through vertical holes. A compression spring is fixedly connected to the bottom end of each vertical rod, and the bottom end of the compression spring is fixedly connected to the base. An abutment block is fixedly connected to the top end of each vertical rod.

[0007] Preferably, the upper surface of the central abutment block is provided with a right-angle groove.

[0008] Preferably, the positioning component includes: a cavity located inside the base, the cavity having multiple square rods inside, the two ends of the multiple square rods being connected by connecting rods, a block being fixedly connected to the center of the front surface of the front square rod, a lead screw being rotatably connected to the inner wall of the block, the lead screw being threaded to the base, a knob being fixedly connected to the front end of the lead screw, and multiple abutments being fixedly connected to the square rods towards the vertical rods, with anti-slip blocks fixedly connected to the ends of the abutments away from the square rods.

[0009] Preferably, the surface of the anti-slip block that faces the vertical rod has an arc-shaped structure, and the curvature of the arc-shaped structure is the same as the curvature of the outer wall of the vertical rod.

[0010] Preferably, the base has a double-layer structure, and the two layers of the base are connected by bolts.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This corrugated pipe outer diameter welding fixture base has the following advantages over traditional technology: Through the cooperation between the base plate, the base, and the abutment assembly, the abutment assembly is provided on the top of the base. Multiple evenly distributed vertical rods are fixed with abutment blocks at their top ends, and a right-angle groove is opened on the upper surface of the central abutment block. When the corrugated pipe is placed in the right-angle groove, when the external pressure block applies pressure, the multiple abutment blocks can adaptively adjust according to the actual size and shape of the corrugated pipe to form an "arc surface" that fully contacts and abuts the corrugated pipe, and evenly applies force to clamp the lower two sides of the outer wall of the corrugated pipe, which greatly enhances the stability of clamping, improves the adaptability to corrugated pipes of different sizes, and significantly improves the practical performance.

[0012] Through the cooperation of the base plate, base, anti-pipe assembly, and positioning assembly, rotating the knob drives the lead screw to rotate, thereby moving the square blocks, square rods, and other components within the cavity. The anti-slip block abuts against the outer wall of the vertical rod, positioning multiple anti-slip blocks and ensuring the clamping force between the anti-slip blocks and the corrugated pipe. This precise positioning method ensures that the corrugated pipe is accurately positioned during welding and will not shift, effectively improving welding accuracy, resulting in uniform welds with consistent width, reducing the defect rate caused by welding quality problems, and guaranteeing the welding quality of the corrugated pipe. Attached Figure Description

[0013] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. Throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the originals and elements are not necessarily drawn to scale.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 A partial sectional view of the front view; Figure 3 for Figure 1 A three-dimensional structural diagram of the base plate and the foundation; Figure 4 for Figure 1 Top sectional view of the base; Figure 5 for Figure 4 Enlarged view of point A in the image.

[0015] In the diagram: 1. Base plate, 2. Base, 3. Vertical rod, 4. Vertical hole, 5. Compression spring, 6. Abutment block, 7. Right angle groove, 8. Cavity, 9. Square rod, 10. Connecting rod, 11. Square block, 12. Lead screw, 13. Knob, 14. Abutment rod, 15. Anti-slip block. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-5 This utility model provides a technical solution: a corrugated pipe outer diameter welding fixture base, including a base plate 1. The base plate 1 is made of high-strength, wear-resistant metal material, such as high-quality carbon structural steel. Its surface is finely ground to ensure that it is flat and smooth, without obvious burrs and defects, so as to provide a stable support foundation. Fixing bolts are inserted into the four corners of the upper surface of the base plate 1, which can be used to install it in a suitable position with the outside. The base 2 is also made of high-strength metal material. A pipe-supporting assembly is provided on the top of the base 2, and a positioning assembly is provided inside the base 2.

[0018] Furthermore, the anti-corrosion assembly includes: multiple vertical rods 3, which are evenly distributed above the base 2. The vertical rods 3 are made of high-strength, corrosion-resistant stainless steel, and their surfaces are polished, which not only makes them aesthetically pleasing but also reduces friction with the inner wall of the vertical hole 4. The vertical rods 3 are connected to the base 2 through the vertical hole 4. The inner wall of the vertical hole 4 is precision machined to fit tightly with the outer diameter of the vertical rod 3, ensuring that the vertical rod 3 can move stably up and down within the vertical hole 4 while preventing swaying. A compression spring 5 is fixed to the bottom end of the vertical rod 3. The compression spring 5 is made of high-quality spring steel and has good elasticity and fatigue resistance. Its bottom end is fixed to the base 2 by welding. The weld is subjected to strict flaw detection to ensure that the connection is firm and reliable. An anti-corrosion block 6 is fixed to the top end of the vertical rod 3. The anti-corrosion block 6 is made of wear-resistant rubber material and has a certain degree of elasticity. It can play a buffering role when the corrugated pipe is resisted, avoiding damage to the corrugated pipe.

[0019] Furthermore, a right-angle groove 7 is provided on the upper surface of the central abutment block 6. The right-angle groove 7 can facilitate the placement of the corrugated pipe to be clamped at the upper center position of the base 2, so that the multiple abutments 6 on both sides of the lower outer wall of the corrugated pipe can apply force to clamp the corrugated pipe evenly.

[0020] Furthermore, the positioning component includes: a cavity 8, located inside the base 2, the cavity 8 being a regular cuboid with a smooth, polished inner wall to facilitate the movement of the square rods 9 and connecting rods 10. Multiple square rods 9 are housed inside the cavity 8, made of high-strength aluminum alloy, which is lightweight and strong, reducing the overall weight of the fixture base while ensuring sufficient strength. The multiple square rods 9 are connected at both ends by connecting rods 10, made of stainless steel, which are welded to the square rods 9 to form a stable frame structure, ensuring synchronous movement of the multiple square rods 9. A block 11 is fixed to the center of the front surface of the front square rod 9, made of the same aluminum alloy as the square rod 9, and welded to it. Its surface is anodized to improve corrosion resistance and wear resistance. A lead screw 12 is rotatably connected to the inner wall of the block 11, which is connected by a roller. The ball bearing is rotatably connected to the block 11. The lead screw 12 is a high-precision trapezoidal lead screw with a self-locking function, which can ensure the stability after positioning. The lead screw 12 is threaded to the base 2. By rotating the lead screw 12, the block 11, the square rod 9 and other components can be moved back and forth in the cavity 8. A knob 13 is fixed to the front end of the lead screw 12. The knob 13 is made of plastic and has anti-slip texture on the surface, which makes it easy for the operator to manually rotate the lead screw 12. Multiple abutments 14 are fixed to the square rod 9 towards the vertical rod 3. The abutments 14 are made of stainless steel and are fixed to the square rod 9 by welding. Their length and angle are precisely designed so that they can accurately abut against the outer wall of the vertical rod 3. Anti-slip blocks 15 are fixed to the ends of the abutments 14 away from the square rod 9. The anti-slip blocks 15 are made of rubber, which can increase the friction between them and the vertical rod 3, so that the "arc surface" formed by the multiple abutments 6 pressing against the corrugated pipe can remain stable, which is convenient for use with corrugated pipes of the same batch.

[0021] Furthermore, the surface of the anti-slip block 15 that faces the vertical rod 3 has an arc-shaped structure, and the curvature of the arc-shaped structure is the same as the curvature of the outer wall of the vertical rod 3. This design allows the anti-slip block 15 to better fit the outer wall of the vertical rod 3, improves the stability of positioning, and ensures that the vertical rod 3 will not wobble up and down during the welding process of the corrugated pipe.

[0022] Furthermore, the base 2 has a double-layer structure, and the two layers of base 2 are connected by multiple high-strength bolts. The bolts are made of stainless steel, and their specifications and quantity have been precisely calculated to ensure that the connection between the two layers of base 2 is firm, and it is convenient to install structural components inside the base 2.

[0023] Working principle: First, the base plate 1 is installed and fixed in a suitable position using fixing bolts. The bellows with clamping is placed inside the right-angle groove 7. At this time, the external pressure block can be driven to apply pressure to the upper part of the outer wall of the bellows to clamp it. During this process, the multiple horizontally distributed abutments 6 are subjected to different pressures, which allows the multiple horizontally distributed vertical rods 3 to slide downwards into the vertical hole 4 at different distances. The multiple horizontally distributed abutments 6 form an "arc" shape, which can fully contact and clamp the threaded pipe. During this process, it is necessary to rotate the abutments. When button 13 is turned clockwise, lead screw 12 rotates within base 2. Since lead screw 12 is threadedly connected to base 2, and block 11 is rotatably connected to lead screw 12 via ball bearing, the rotation of lead screw 12 will cause block 11, square rod 9, and other components to move within cavity 8. Anti-slip block 15 abuts against the outer wall of vertical rod 3, positioning multiple abutments 6 to ensure the clamping force between abutments 6 and bellows. At this point, base 2 completes the clamping operation of bellows, and welding of bellows can begin.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A base for a corrugated pipe outer diameter welding fixture, comprising a base plate (1), characterized in that: The base plate (1) is fixed to the upper surface of the base (2), and a support tube assembly is provided above the base (2). A positioning assembly is provided inside the base (2).

2. The corrugated pipe outer diameter welding fixture base according to claim 1, characterized in that: The abutment assembly includes: multiple vertical rods (3), which are evenly distributed above the base (2). The vertical rods (3) are connected to the base (2) through vertical holes (4). A compression spring (5) is fixedly connected to the bottom end of the vertical rod (3). The bottom end of the compression spring (5) is fixedly connected to the base (2). A stop block (6) is fixedly connected to the top end of the vertical rod (3).

3. The corrugated pipe outer diameter welding fixture base according to claim 2, characterized in that: The upper surface of the central abutment block (6) is provided with a right-angle groove (7).

4. The corrugated pipe outer diameter welding fixture base according to claim 1, characterized in that: The positioning component includes: a cavity (8) located inside the base (2), a plurality of square rods (9) are provided inside the cavity (8), the two ends of the plurality of square rods (9) are connected by a connecting rod (10), a block (11) is fixedly connected to the center of the front surface of the front square rod (9), a lead screw (12) is rotatably connected to the inner wall of the block (11), the lead screw (12) is threadedly connected to the base (2), a knob (13) is fixedly connected to the front end of the lead screw (12), a plurality of abutment rods (14) are fixedly connected to the square rod (9) in the direction of the vertical rod (3), and an anti-slip block (15) is fixedly connected to the end of the abutment rod (14) away from the square rod (9).

5. The corrugated pipe outer diameter welding fixture base according to claim 4, characterized in that: The surface of the anti-blocking block (15) that faces the vertical rod (3) is an arc-shaped structure, and the curvature of the arc-shaped structure is the same as the curvature of the outer wall of the vertical rod (3).

6. The corrugated pipe outer diameter welding fixture base according to claim 1, characterized in that: The base (2) has a double-layer structure, and the two layers of the base (2) are connected by bolts.

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