A U-shaped plate welding shaping clamping device for an upper mounting bracket assembly

Abstract

The application discloses a U-shaped plate welding shaping clamping device with a mounting bracket assembly, which comprises a base, an inner shaping structure, an outer shaping structure, a torsion shaping structure and a driving mechanism, the inner shaping structure is located inside the U-shaped plate and is matched with the inner wall of the U-shaped plate with a gap, and is used for limiting the inward shrinkage deformation of the U-shaped plate during welding; the outer shaping structure is located above the U-shaped plate and is in contact with the top of the U-shaped plate, and is used for limiting the outward opening deformation of the U-shaped plate during welding; the torsion shaping structure comprises waist-shaped blocks symmetrically arranged on the two sides of the inner shaping structure, in a non-working state, the waist-shaped blocks are located in the inner shaping structure, in a working state, the driving mechanism drives the waist-shaped blocks to move into the waist-shaped grooves in the side walls of the U-shaped plate, and is used for limiting the torsion deformation of the U-shaped plate during welding; the inner shaping structure, the outer shaping structure and the torsion shaping structure are arranged, the U-shaped plate is shaped in multiple directions, the consistency and stability of the product quality after the U-shaped plate is welded are improved, and the U-shaped plate correction and shaping process is reduced.

Description

Technical Field

[0001] This invention relates to the field of automotive steering component technology, and in particular to a U-shaped plate welding and shaping clamping device for mounting bracket assemblies. Background Technology

[0002] The upper mounting bracket assembly is a component of the automotive steering column assembly. It secures the steering column to the instrument panel crossbeam in the driver's cab, enabling steering wheel control and vehicle direction. The upper mounting bracket assembly is welded together from an upper mounting plate, a shaped clamping safety block, an upper cable clamp, and a U-shaped plate.

[0003] During the welding process between the U-shaped plate and the upper mounting plate, a shaping and clamping device is required to hold the U-shaped plate in place. Existing shaping and clamping devices, when welding the U-shaped plate, first assemble the upper mounting plate (already welded with the upper clamping plate and injection-molded safety block) onto the base using locating pins and other fasteners. Then, the U-shaped plate is mounted on the upper mounting plate through two locating holes and two locating pins. During welding, a locating block is installed at the upper end of the U-shaped plate, and its limiting groove at the bottom engages with the U-shaped plate to prevent it from opening outwards and deforming. However, this shaping and clamping device has a simple structure, poor shaping effect, and the U-shaped plate dimensions do not meet design requirements, necessitating an additional shaping process for the U-shaped plate. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a U-shaped plate welding and shaping clamping device for mounting bracket assemblies, which can solve the deficiencies of the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a U-shaped plate welding and shaping clamping device with an upper mounting bracket assembly, comprising a base, an inner shaping structure, an outer shaping structure, a torsion shaping structure, and a driving mechanism. The inner shaping structure is located inside the U-shaped plate and has a clearance fit with the inner wall of the U-shaped plate, used to restrict the inward shrinkage deformation of the U-shaped plate during welding. The inner shaping structure is mounted on the base via a connecting plate. The outer shaping structure is located above the U-shaped plate and contacts the top of the U-shaped plate, used to restrict the outward expansion deformation of the U-shaped plate during welding. The torsion shaping structure includes waist-shaped blocks symmetrically arranged on both sides of the inner shaping structure. The waist-shaped blocks are matched with the size of the waist-shaped grooves. The output end of the driving mechanism is connected to the waist-shaped blocks. In the non-working state, the waist-shaped blocks are located inside the inner shaping structure. In the working state, the driving mechanism drives the waist-shaped blocks to move into the waist-shaped grooves on the side wall of the U-shaped plate, used to restrict the torsion deformation of the U-shaped plate during welding.

[0006] As a further improvement to the above technical solution:

[0007] The internal fixed structure is a square base.

[0008] The square base has symmetrical grooves on both sides, and the waist-shaped block is located in the groove. The square base has a through groove on its upper side. The driving mechanism includes a power unit located above the outer shaping structure and motion units symmetrically arranged on both sides inside the through groove. The output end of the motion unit extends into the groove and connects to the waist-shaped block. In the working state, the output end of the power unit moves down through the through hole on the outer shaping structure and contacts the input end of the motion unit, driving the two motion units on both sides to move away from each other so that the waist-shaped block moves into the waist-shaped groove, which is used to limit the torsional deformation of the U-shaped plate during welding.

[0009] The power unit includes a cylinder, a bracket, and a drive bar. The cylinder is mounted on the top of the outer shaping structure via the bracket. The output end of the cylinder is connected to the drive bar, and the drive bar has drive ramps on both sides at its bottom.

[0010] The motion unit includes a wedge block, a connecting shaft, and a spring. One end of the connecting shaft is connected to the wedge block, and the other end extends through the square seat to the groove and connects to the waist block. The spring is sleeved on the connecting shaft, with one end connected to the wedge block and the other end connected to the inner wall of the through groove.

[0011] The external shaping structure includes an upper pressure block and two positioning blocks. The positioning blocks are installed on both sides of the bottom of the upper pressure block. The bottom of the positioning blocks has a V-shaped opening that matches the U-shaped plate. The V-shaped openings on both sides are used to restrict the U-shaped plate from opening outward and deforming during welding.

[0012] The upper pressure block has sliding grooves on both sides, and the distance between the two positioning blocks is adjusted by the sliding grooves.

[0013] The U-shaped plate welding and shaping clamping device for the upper mounting bracket assembly also includes a stop block, which is fixedly mounted on the upper surface of the base and used to position the U-shaped plate and the upper mounting plate in the front and rear positions.

[0014] The U-shaped plate welding and shaping clamping device for the upper mounting bracket assembly also includes a clamping mechanism, which is installed on both sides of the base and is used to clamp and fix the two sides of the upper mounting plate.

[0015] The clamping mechanism includes a mounting base fixedly mounted on the upper surface of the base. A handle is hinged to the lower part of the mounting base near the upper mounting plate. A first connecting rod is hinged to the upper part of the mounting base away from the upper mounting plate. A second connecting rod is hinged to the middle of the handle. The bottom end of the second connecting rod is hinged to the first connecting rod. A pressure plate is fixedly connected to the end of the first connecting rod away from the mounting base. A locking block is installed on the side of the second connecting rod near the pressure plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. This invention has the advantages of compact structure and excellent shaping effect. By setting up an internal shaping structure, an external shaping structure and a torsion shaping structure, it prevents the U-shaped plate from shrinking and deforming inward, opening and deforming outward, and torsion deforming under high temperature environment. The U-shaped plate is shaped from multiple directions, which improves the consistency and stability of the product quality after welding the U-shaped plate, reduces the U-shaped plate correction and shaping process, and improves the production efficiency of the product.

[0018] 2. The present invention has the advantages of accurate positioning, convenient clamping, and simple operation. During welding, the upper mounting plate is fixed on the base by the clamping mechanism, and then the U-shaped plate is placed on the upper mounting plate so that the inner shaping structure is placed inside the U-shaped plate. Then, by setting a stop block, the front end of the stop block is pressed against the U-shaped plate to complete the rapid and accurate positioning of the U-shaped plate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 for Figure 1 A diagram showing the result after removing the square base;

[0021] Figure 3 This is a schematic diagram of the drive mechanism;

[0022] Figure 4 This is a schematic diagram of the U-shaped plate of the present invention;

[0023] Figure 5 This is a schematic diagram of the square base of the present invention;

[0024] Figure 6 This is a schematic diagram of the external shaping structure of the present invention;

[0025] Figure 7 This is a schematic diagram of the clamping mechanism of the present invention;

[0026] In the diagram: 1. Base; 2. Inner shaping structure; 3. U-shaped plate; 31. Waist-shaped groove; 4. Connecting plate; 5. Outer shaping structure; 51. Upper pressure block; 511. Slide groove; 52. Positioning block; 53. V-shaped opening; 6. Torsional shaping structure; 61. Waist-shaped block; 62. Drive mechanism; 621. Power unit; 6211. Cylinder; 6212. Bracket; 6213. Drive bar; 622. Motion unit; 6221. Wedge block; 6222. Connecting shaft; 6223. Spring; 7. Groove; 8. Through groove; 9. Stop block; 10. Clamping mechanism; 101. Mounting base; 102. Handle; 103. First connecting rod; 104. Second connecting rod; 105. Pressure plate; 106. Locking block; 11. Upper mounting plate. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0029] When welding the U-shaped plate of the mounting bracket assembly, the U-shaped plate 3 is in a high-temperature environment, and the entire plate may deform in various directions. The existing shaping and clamping device only limits and shapes the U-shaped plate when it opens outward, so the size of the welded U-shaped plate still does not meet the design requirements, and a shaping process for the U-shaped plate needs to be added.

[0030] like Figures 1 to 7As shown, the U-shaped plate welding and shaping clamping device with upper mounting bracket assembly in this embodiment includes a base 1; an inner shaping structure 2, an outer shaping structure 5, a torsion shaping structure 6, and a drive mechanism 62. The inner shaping structure 2 is installed on the upper surface of one end of the connecting plate 4 by bolts or screws, and the other end of the connecting plate 4 is connected to the base 1. The inner shaping structure 2 is located inside the U-shaped plate 3 and has a clearance fit with the inner wall of the U-shaped plate 3. The gap between the inner shaping structure 2 and the inner wall of the U-shaped plate 3 is approximately 0.1-0.2 mm, with an optimal value of 0.15 cm. During welding, the U-shaped plate 3 is in a high-temperature environment and undergoes steel deformation. The inner shaping structure 2, which is close to the inner wall of the U-shaped plate 3, can be used to limit the inward shrinkage and deformation of the U-shaped plate 3, and this gap facilitates the loading of the U-shaped plate 3. The outer shaping structure 5 is located above the U-shaped plate 3 and contacts the top of the U-shaped plate 3. During welding, the U-shaped plate 3 is in a high-temperature environment, causing steel deformation. The upper end of the U-shaped plate 3 is prone to open outward. The outer shaping structure 5 holds the upper end of the U-shaped plate 3 in place, restricting the outward deformation of the U-shaped plate 3. The torsion shaping structure 6 includes waist-shaped blocks 61 symmetrically arranged on both sides of the inner shaping structure 2. The waist-shaped blocks 61 are matched with the waist-shaped groove 31 in size. The output end of the drive mechanism 62 is connected to the waist-shaped blocks 61. In the non-working state, the waist-shaped blocks 61 are located inside the inner shaping structure 2. In the working state, the drive mechanism 62 drives the waist-shaped blocks 61 to move horizontally away from the inner shaping structure 2 and into the waist-shaped groove 31 on the side wall of the U-shaped plate 3. Since the gap between the waist-shaped blocks 61 and the waist-shaped groove 31 is extremely small, about 0.05-0.1mm, when the U-shaped plate 3 undergoes torsion deformation, the waist-shaped blocks 61 restrict the torsion deformation of the U-shaped plate 3.

[0031] Furthermore, the inner shaping structure 2 is a square seat with a width of 51.3mm (0, -0.1). The square seat is in close contact with the U-shaped plate 3 on both sides, but there is also a gap. The gap between them is 0.1-0.2mm, and the optimal gap is 0.15cm. If the gap is too large, it will affect the shaping effect; if the gap is too small, it will be inconvenient to feed the U-shaped plate 3.

[0032] Furthermore, the square base has symmetrical grooves 7 on both sides, with the openings of the grooves 7 facing outwards. The waist-shaped block 61 is located inside the groove 7 and must not extend beyond the outer surface of the square base. A through groove 8 is provided on the upper side of the square base. The drive mechanism 62 includes a power unit 621 located above the outer shaping structure 5 and motion units 622 symmetrically arranged on both sides inside the through groove 8. The output end of the motion unit 622 extends into the groove 7 and connects to the waist-shaped block 61. In the working state, the output end of the power unit 621 moves down through the through hole on the outer shaping structure 5 and contacts the motion unit 622, causing the two motion units 622 on both sides to move away from each other so that the waist-shaped block 61 moves into the waist groove 31, which is used to limit the torsional deformation of the U-shaped plate 3 during welding.

[0033] Furthermore, the power unit 621 includes a cylinder 6211, a bracket 6212, and a drive bar 6213. The cylinder 6211 is mounted on the outer shaping structure 5 via the bracket 6212. The output end of the cylinder 6211 is connected to the drive bar 6213. The bottom end of the drive bar 6213 is triangular, and the two sides of the drive bar 6213 have driving slopes with an angle of 20°.

[0034] Furthermore, the motion unit 622 includes a wedge block 6221, a connecting shaft 6222, and a spring 6223. One end of the connecting shaft 6222 is connected to the wedge block 6221 by bolts or screws, and the other end extends through the square seat into the groove 7 and is connected to the waist block 61 by bolts or screws. The spring 6223 is sleeved on the connecting shaft 6222. One end of the spring 6223 is connected to the wedge block 6221, and the other end is connected to the inner wall of the through groove 8. In the non-working state, the upper ends of the wedge blocks 6221 on both sides have openings for the lower end of the drive bar 6213 to enter. The drive slope of the drive bar 6213 matches the wedge blocks 6221 on both sides, and the bottoms of the wedge blocks 6221 on both sides are in close contact. The waist blocks 61 on both sides do not exceed the surface of the square seat. In the working state, the drive bar 6213 moves down and contacts the surface of the wedge blocks 6221 on both sides. The drive bar 6213 continues to move down and applies force to the surface of the wedge blocks 6221 on both sides, causing the wedge blocks 6221 to compress the spring 6223. The connecting shaft 6222 moves horizontally away from each other, pushing the waist blocks 61 into the waist groove 31.

[0035] Furthermore, the outer shaping structure 5 includes an upper pressure block 51 and two positioning blocks 52. The upper pressure block 51 has a through hole in the middle to facilitate the downward movement and passage of the drive bar 6213. The positioning blocks 52 are installed on both sides of the bottom of the upper pressure block 51. The bottom of the positioning blocks 52 has a V-shaped opening 53 that matches the U-shaped plate 3. The V-shaped openings 53 on both sides are used to restrict the U-shaped plate 3 from opening and deforming outward during welding. In the working state, the assembly of the upper pressure block 51 and the positioning blocks 52 is placed on top of the U-shaped plate 3, and the V-shaped openings 53 are engaged with the U-shaped plate 3, restricting the U-shaped plate 3 from opening and deforming outward during welding.

[0036] Furthermore, the upper pressure block 51 has sliding grooves 511 on both sides, and the distance between the two positioning blocks 52 is adjusted through the sliding grooves 511. A screw is screwed to the top of the positioning block 52, and the screw passes through the sliding groove 511 and is then tightened by a nut. When it is necessary to adjust the distance between the two positioning blocks 52, the nut can be loosened for adjustment.

[0037] Furthermore, it also includes a stop block 9, which is fixed to the upper surface of the base 1 and used to position the U-shaped plate 3 and the upper mounting plate 11 in the front and rear positions. During welding, the U-shaped plate 3 is placed on the upper mounting plate 11, so that the inner shaping structure 2 is placed inside the U-shaped plate 3. Then, by setting the stop block 9, the front end of the stop block 9 is pressed against the U-shaped plate 3, which can quickly and accurately position the U-shaped plate 3, facilitating the loading work before welding.

[0038] Furthermore, it also includes a clamping mechanism 10, which is installed on both sides of the base 1 and is used to clamp and fix both sides of the upper mounting plate 11.

[0039] Furthermore, the clamping mechanism 10 includes a mounting base 101, which is fixedly mounted on the upper surface of the base 1. A handle 102 is hinged to the lower part of the mounting base 101 near the upper mounting plate 11. A first connecting rod 103 is hinged to the upper part of the mounting base 101 away from the upper mounting plate 11. A second connecting rod 104 is hinged to the middle of the handle 102. The bottom end of the second connecting rod 104 is hinged to the first connecting rod 103. A pressure plate 105 is fixedly connected to the end of the first connecting rod 103 away from the mounting base 101. A locking block 106 is installed on the side of the second connecting rod 104 near the pressure plate 105. During welding, the upper mounting plate, which has been welded with the upper clamp and the safety block, is mounted on the base 1 using positioning pins. The handle 102 is rotated towards the upper mounting plate 11. The handle 102 drives the second connecting rod 104 to rotate, which in turn drives the first connecting rod 103 to rotate. The first connecting rod 103 then drives the pressure plate 105 to press down on the upper mounting plate 11. When both the handle 102 and the second connecting rod 104 are vertical, the handle 102 is in a stable state. At this time, the bottom of the locking block 106 abuts against the first connecting rod 103, and the pressure plate 105 fixes the upper mounting plate 11 to the base 1. To release the fixation of the upper mounting plate 11, the handle 102 is pushed outwards. The rotation of the handle 102 drives the second connecting rod 104 to rotate, which in turn drives the first connecting rod 103 to rotate. The first connecting rod 103 then causes the pressure plate 105 to disengage from the upper mounting plate 11.

[0040] Specific working principle: When not in operation, the waist-shaped block 61 is installed in the groove 7 of the square seat. The connecting shaft 6222 passes through the hole in the side wall of the square seat and is connected to the waist-shaped block 61 by screws. The other end of the connecting shaft 6222 is connected to the wedge-shaped block 6221 by screws. The spring 6223 is sleeved between the wedge-shaped block 6221 and the side wall of the through groove 8. The waist-shaped block 61 (thickness 4.5) should be able to slide freely horizontally back and forth under the action of the compressed spring 6223. When the spring 6223 is not compressed, the surface of the waist-shaped block 61 should not exceed the surface of the square seat. Then, the square seat is fixed to one end of the connecting plate 4 by screws, and the other end of the connecting plate 4 is fixed to the base 1 by screws. When in operation, the upper mounting plate 11, which has been welded with the upper wire clamp and the injection-molded safety block, is placed in a specific position on the base 1 and fixed by the clamping mechanism 10. The U-shaped plate 3 is placed on the upper mounting plate 11, so that the square seat is located inside the U-shaped plate 3. The front end of the stop block 9 is close to the U-shaped plate 3, and the outer fixing structure is... The mechanism 5 is placed on top of the U-shaped plate 3. When the manual valve on the fixture is activated, the piston rod of the cylinder 6211 drives the drive bar 6213 (triangular at the bottom with a 20° driving slope) downward. Through the square through hole of the upper pressure block 51, the triangular driving slope at the bottom of the drive bar 6213 will touch the two wedge blocks 6221 in the through groove 8. The wedge blocks 6221 squeeze the spring 6223 on both sides, and at the same time drive the waist block 61 to move outward. The waist block 61 is inserted into the waist groove 31 of the U-shaped plate 3. The combination of the square seat, the upper pressure block 51 and the positioning block 52, and the waist block 61 together shape the U-shaped plate 3, preventing the U-shaped plate 3 from shrinking inward, opening outward, or twisting under high temperature. The U-shaped plate 3 is shaped from multiple directions, which improves the consistency and stability of the product quality after welding, reduces the U-shaped plate 3 correction and shaping process, and improves the production efficiency of the product.

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A U-shaped plate welding and shaping clamping device for mounting bracket assemblies, characterized in that, include: Base (1); The inner shaping structure (2) is located inside the U-shaped plate (3) and is in clearance fit with the inner wall of the U-shaped plate (3). It is used to restrict the U-shaped plate (3) from shrinking and deforming inward during welding. The inner shaping structure (2) is installed on the base (1) through the connecting plate (4). An external shaping structure (5), located above the U-shaped plate (3) and in contact with the top of the U-shaped plate (3), is used to restrict the outward expansion and deformation of the U-shaped plate (3) during welding; and The torsion shaping structure (6) includes waist-shaped blocks (61) and a driving mechanism (62) symmetrically arranged on both sides of the inner shaping structure (2). The waist-shaped blocks (61) are matched with the waist-shaped groove (31) in size. In the non-working state, the waist-shaped blocks (61) are located in the inner shaping structure (2). In the working state, the waist-shaped blocks (61) move to the waist-shaped groove (31) on the side wall of the U-shaped plate (3) to limit the torsional deformation of the U-shaped plate (3) during welding. The output end of the driving mechanism (62) is connected to the waist-shaped blocks (61). In the working state, the driving mechanism (62) drives the waist-shaped blocks (61) to move into the waist-shaped groove (31). The internal shaping structure (2) is a square base; The square seat has symmetrical grooves (7) on both sides, the waist-shaped block (61) is located in the groove (7), the square seat has a through groove (8) on the upper side, the driving mechanism (62) includes a power unit (621) located above the outer shaping structure (5) and a motion unit (622) symmetrically arranged on both sides inside the through groove (8). The output end of the motion unit (622) extends into the groove (7) and connects to the waist-shaped block (61). In the working state, the output end of the power unit (621) moves down through the through hole on the outer shaping structure (5) and contacts the input end of the motion unit (622), driving the two motion units (622) to move away from each other so that the waist-shaped block (61) moves into the waist groove (31) to limit the torsional deformation of the U-shaped plate (3) during welding. The power unit (621) includes a cylinder (6211), a bracket (6212), and a drive bar (6213). The cylinder (6211) is mounted on the outer shaping structure (5) via the bracket (6212). The output end of the cylinder (6211) is connected to the drive bar (6213). The drive bar (6213) has drive ramps on both sides of its bottom. The motion unit (622) includes a wedge block (6221), a connecting shaft (6222), and a spring (6223). One end of the connecting shaft (6222) is connected to the wedge block (6221), and the other end extends through the square seat to the groove (7) and connects to the waist block (61). The spring (6223) is sleeved on the connecting shaft (6222). One end of the spring (6223) is connected to the wedge block (6221), and the other end is connected to the inner wall of the through groove (8).

2. The U-shaped plate welding and shaping clamping device for the upper mounting bracket assembly according to claim 1, characterized in that, The external shaping structure (5) includes an upper pressure block (51) and two positioning blocks (52). The positioning blocks (52) are installed on both sides of the bottom of the upper pressure block (51). The bottom of the positioning blocks (52) is provided with V-shaped openings (53) that match the U-shaped plate (3). The V-shaped openings (53) on both sides are used to restrict the U-shaped plate (3) from opening outward and deforming during welding.

3. The U-shaped plate welding and shaping clamping device for the upper mounting bracket assembly according to claim 2, characterized in that, The upper pressure block (51) has sliding grooves (511) on both sides, and the distance between the two positioning blocks (52) is adjusted by the sliding grooves (511).

4. The U-shaped plate welding and shaping clamping device for the upper mounting bracket assembly according to any one of claims 1-3, characterized in that, It also includes a stop block (9), which is fixedly mounted on the upper surface of the base (1). The upper mounting bracket assembly is composed of an upper mounting plate (11), a shaping clamping safety block, an upper wire clamping plate, and the U-shaped plate (3) welded together. The stop block (9) is used to position the U-shaped plate (3) and the upper mounting plate (11) in the front and rear positions.

5. The U-shaped plate welding and shaping clamping device for the upper mounting bracket assembly according to any one of claims 1-3, characterized in that, It also includes a clamping mechanism (10), which is installed on both sides of the base (1). The upper mounting bracket assembly is welded together from an upper mounting plate (11), a shaped clamping safety block, an upper wire clamping plate, and the U-shaped plate (3). The clamping mechanism (10) is used to clamp and fix both sides of the upper mounting plate (11).

6. The U-shaped plate welding and shaping clamping device for the upper mounting bracket assembly according to claim 5, characterized in that, The clamping mechanism (10) includes a mounting base (101), which is fixedly mounted on the upper surface of the base (1). A handle (102) is hinged to the lower part of the mounting base (101) near the upper mounting plate (11). A first connecting rod (103) is hinged to the upper part of the mounting base (101) away from the upper mounting plate (11). A second connecting rod (104) is hinged to the middle of the handle (102). The bottom end of the second connecting rod (104) is hinged to the first connecting rod (103). A pressure plate (105) is fixedly connected to the end of the first connecting rod (103) away from the mounting base (101). A locking block (106) is installed on the side of the second connecting rod (104) near the pressure plate (105).

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