CN219561927U

CN219561927U - Welding tool for shock absorber

Info

Publication number: CN219561927U
Application number: CN202222610686.9U
Authority: CN
Inventors: 常达伟
Original assignee: Burcomb Auto Parts Systems Suzhou Co ltd
Current assignee: Burcomb Auto Parts Systems Suzhou Co ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2023-08-22
Anticipated expiration: 2032-09-30

Abstract

The utility model discloses a welding tool for a shock absorber, a shock absorber and a hanging ring connecting structure, wherein auxiliary positioning is performed through a tool with an arc surface and a fixing groove, and fixing connection among a connecting surface of a lifting lug, the top of a cylinder body of the shock absorber and a dust cover is achieved through construction of a projection welding bead. The main positioning is performed through the bearing blocks of the tool, the auxiliary positioning is performed through the fixing grooves, projection welding is performed among the shock absorber, the lifting lugs and the dust cover, the connecting structure among parts is changed, and the shock absorber is improved to be durable to 11000 times under the tensile force of 4.5x104N.

Description

Welding tool for shock absorber

Technical Field

The utility model relates to the field of manufacturing of automobile vibration dampers, in particular to a vibration damper welding tool.

Background

The 50-cylinder-diameter shock absorbers are adopted by 90% of trailer shock absorbers on the market, and 45-cylinder-diameter shock absorbers originally used for medium and large buses are gradually popularized and applied to the trailers in recent years due to the improvement of the main engine factories on the cost reduction requirement. Because the requirement of the trailer on the maximum bearing capacity of the shock absorber is far greater than the line of 45kN of the passenger car, the welding and fixing structure among the piston rod, the hanging ring and the dust cover in the original shock absorber can not meet the technical requirement of the trailer.

The assembly between the existing 45 bore shock absorber and the eye shown with reference to fig. 1 is typically divided into three steps. 1. The shock absorber 50 and the suspension ring 40 are projection welded; 2. the dust cover 60 is welded with the hanging ring 40; 3. the dust cap 60 and the damper 50 are welded. Even in the whole welding state, the single projection welding can only marginally reach 100kN, and the overall connection strength is relatively weak, especially at the position 1 a. When the stress at the lifting lug 40 is transmitted through the dust cover 60, the lifting lug is broken frequently, so that the passing rate of a 4.5 x 10 x 4N pull force 2000-3000 times of circulating experiments is low and is far lower than the performance of 8900-11000 times of market mainstream brands, and the cross-platform application and popularization of products are affected.

Disclosure of Invention

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

a shock absorber welding fixture, comprising:

the bearing block is arranged at one end of the rack and is used for being attached to the side part of the shock absorber and limiting;

the fixing groove is arranged at the other end of the rack, and the fixing groove is in line contact with the outer convex edges at two sides of the lower end face of the lifting lug so as to limit the position degree of the lifting lug on the rack.

In a preferred embodiment of the utility model, the left end of the bearing block is a cambered surface which is "U" shaped and has a profile similar to the side of the damper.

In a preferred embodiment of the utility model, the support block is fixedly connected to the stand by a pin set comprising at least one locating pin and a bolt.

In a preferred embodiment of the present utility model, the stand is in an "L" shape, and is formed by fixing a positioning mounting plate and a connecting block through the pin shaft set.

In a preferred embodiment of the utility model, the positioning mounting plate is provided with at least one positioning pin hole and a threaded hole, the lower end of the connecting block is provided with at least one positioning pin hole and a counter bore, the positioning pin sequentially passes through the positioning pin hole and the positioning pin hole, and the bolt passes through the counter bore and the threaded hole to be fixed.

In a preferred embodiment of the utility model, the bearing block is provided with at least one positioning pin hole and a threaded hole, the upper end of the connecting block is also provided with at least one pin through hole and one counter bore, the positioning pin sequentially penetrates through the positioning pin through hole and the positioning pin hole to be fixed, and the bolt is locked through the counter bore and the threaded hole.

The utility model has the beneficial effects that:

according to the welding tool for the shock absorber and the connecting structure of the shock absorber and the lifting ring, provided by the utility model, the bearing block of the tool is used for main positioning, the fixing groove is used for auxiliary positioning, projection welding is carried out among the shock absorber, the lifting lug and the dust cover, and two reinforced protection welding steps are added between the original 1-order and 2-order steps, so that the welding area between the shock absorber and the lifting ring is further increased, and the durability of the shock absorber under the tensile force of 4.5x10 x 4N is improved to 11000 times. Meanwhile, the arrangement space of the chassis can be reduced by adopting the small-caliber shock absorber, and the number of limiting ropes at the vehicle body end is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

Fig. 1 is a schematic diagram of a welding structure of a conventional damper and a lifting lug.

Fig. 2 is a schematic diagram of the product structure of the present utility model.

Fig. 3 is a schematic representation of a modified product of the present utility model.

Detailed Description

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, and the above description is for convenience of description of the present utility model to simplify the description, rather than to indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

As used in this specification, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. The use of the terms "comprising," "including," and "containing" in the specification mean that the recited features are present, but that one or more other features are not excluded.

Exemplary embodiments of the present utility model will be described below with reference to the accompanying drawings. It should be understood, however, that the utility model may be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide yet additional embodiments. Throughout the drawings, like reference numbers indicate identical or functionally identical elements.

The welding fixture for the shock absorber shown with reference to fig. 2 mainly comprises: the positioning mounting plate 10, the connecting block 20 and the supporting block 30. The positioning mounting plate 10 and the connecting block 20 form a rack of the tool, and the bearing block 30 is used as a functional block on the rack.

The left end face of the supporting block 30 is U-shaped, is provided with a U-shaped cambered surface 31, and is matched with the outer surface of the lower section 52 of the shock absorber cylinder body through the cambered surface 31, so that the lower section 52 of the shock absorber cylinder body can be flatly placed on the supporting block 30, and the lateral direction of the shock absorber cylinder body is limited through the supporting block 30. The support block 30 is secured to the connection block upper end 26 by a pin securing structure. The pin fixing structure consists of a locating pin hole 33, a threaded hole 32, a locating pin through hole 22 and a counter bore 21 and is fixed through a locating pin 23 and a bolt 24. The right side of the supporting block 30 is provided with a positioning pin hole 33 and a threaded hole 32, the upper end 26 of the connecting block is also provided with a positioning pin perforation 22 and a counter bore 21, the relative positions of the supporting block 30 and the connecting block 20 are fixed through the positioning pin 23 passing through the positioning pin perforation 22 and the positioning pin hole 33, and the locking of the positions between the supporting block 30 and the connecting block 20 is realized through the bolts 24 passing through the counter bore 21 and fastening in the threaded hole 32.

The upper surface of the positioning mounting plate 10 is provided with a fixing groove 11, and outer convex edges 41 on two sides of the lower end surface of the lifting lug 40 are in line contact with the fixing groove 11, so that the lifting lug 40 can be fixed on the positioning mounting plate 10. The right side of the positioning mounting plate 10 and the lower end 25 of the connecting block are provided with a positioning pin hole 33, a threaded hole 32, a positioning pin through hole 22 and a counter bore 21 in the same structural form as the supporting block 30 and the upper end 26 of the connecting block, and are fixed by the positioning pin 23 and the bolt 24. The pin shaft fixing structure has the advantages that the positioning pin 23 can be used for completing quick assembly among all parts, and then the pin shaft fixing structure is locked by only one bolt 24, so that the structure is simple, the processing is convenient, and the cost is low.

In combination with a shock absorber and suspension link connection structure as shown with reference to fig. 3, the aperture of the cover hole 61 in the center of the dust cover 60 is enlarged. Through reversing the lifting lug 40 on the positioning mounting plate 10, after the shock absorber 50 is positioned through the supporting block 30, a projection welding bead 1 is applied among the top 53 of the cylinder, the dust cover 60 and the connecting surface 42, so that the lifting lug 40 and the shock absorber 50 are directly and rigidly connected, the connecting strength among all parts is improved, and the dust cover 60 with the thickness of only 2mm is avoided.

Claims

1. The utility model provides a shock absorber welding frock which characterized in that includes:

2. The welding fixture for a shock absorber as set forth in claim 1 wherein said left end of said support block is a curved surface, said curved surface being "U" shaped and having a profile similar to said side of said shock absorber.

3. The welding fixture of a vibration damper of claim 2, wherein the support block is fixedly connected to the stand by a set of pins, the set of pins including at least one locating pin and a bolt.

4. A shock absorber welding fixture as in claim 3 wherein said stand is "L" shaped and is formed by a positioning mounting plate and a connecting block secured by said pin set.

5. The welding fixture for the shock absorber as set forth in claim 4 wherein said positioning mounting plate has at least one positioning pin hole and a threaded hole, said connecting block has at least one pin hole and a counter bore arranged at a lower end thereof, said positioning pin passing through said positioning pin hole and said positioning pin hole in sequence, said bolt passing through said counter bore and said threaded hole for fixing.

6. The welding fixture for the shock absorber of claim 5, wherein the bearing block is provided with at least one positioning pin hole and a threaded hole, at least one pin through hole and at least one counter bore are formed in the upper end of the connecting block, the positioning pin sequentially penetrates through the positioning pin through hole and the positioning pin hole to be fixed, and the bolt penetrates through the counter bore and the threaded hole to be locked.