CN216069515U

CN216069515U - High-strength lower cross arm

Info

Publication number: CN216069515U
Application number: CN202121477436.1U
Authority: CN
Inventors: 雷中文
Original assignee: Chongqing Kesri Mechanical And Electrical Equipment Co ltd
Current assignee: Chongqing Kesri Mechanical And Electrical Equipment Co ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-03-18
Anticipated expiration: 2031-06-30

Abstract

The utility model relates to the technical field of vehicle accessories and discloses a high-strength lower cross arm which comprises an arm body and a connecting lug boss, wherein the connecting lug boss is integrally formed on the arm body, and a mold drawing section is arranged on the side wall of the arm body, which is positioned on the connecting lug boss. According to the technical scheme, the lug bosses are arranged on the arm body and are higher than the arm body, the die drawing section exists, the grooves have a certain inward angle, and blanks are more easily gathered in the grooves of the lug bosses of the fixed die, so that the grooves can be filled, and the problem of over-low strength of the lug bosses of the connecting lugs is solved.

Description

High-strength lower cross arm

Technical Field

The utility model relates to the technical field of vehicle accessories, in particular to a high-strength lower cross arm.

Background

The lower cross arm is mainly a connecting fitting for connecting a tire frame, a damping mechanism and a suspension beam, the manufacturing process of the lower cross arm in the prior art is generally formed by casting, the casting technical principle is that liquid metal is cast into a casting cavity adaptive to the shape of a part, and the part or a blank is obtained after the liquid metal is cooled and solidified.

Along with the development of a plurality of forged lower cross arms on the market, a plurality of problems still exist in the process of casting, modifying and forging the lower cross arms, the forging process needs to be adjusted continuously, the material of the lower cross arms is improved, and the structure of the lower cross arms needs to be adjusted.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-strength lower cross arm to solve the problem that the boss part of a connecting lug of a forging piece of the lower cross arm cannot be filled to cause too low strength of the boss part of the connecting lug in the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme:

cross arm under high strength, including arm body and engaging lug boss, engaging lug boss integrated into one piece is on the arm body, and the arm body is located engaging lug boss lateral wall and is provided with the drawing of patterns section.

The technical principle and the beneficial effects of the utility model are as follows:

according to the technical scheme, due to the existence of the die drawing section, the groove is inward at a certain angle, the blank is more easily gathered into the connecting lug boss groove formed by the die, so that the groove can be filled tightly, and the problem of low strength of the connecting lug boss part is solved.

Further, the drawing angle of the drawing section is 2-8 degrees.

Has the advantages that: the arrangement of the angle is easier to lead the lug boss part to be filled.

Furthermore, one end of the arm body is integrally formed with a protrusion.

Has the advantages that: the arrangement of the bulges facilitates the fixed connection of the arm body and the wheel frame.

Further, the projection is provided obliquely on the arm body.

Has the advantages that: the setting of protruding relative arm body carries out further angle optimization for it is more convenient to be connected with the wheel frame.

Furthermore, the two end parts of the arm body far away from one side of the bulge are connected with connecting blocks.

Has the advantages that: the setting of connecting block makes things convenient for the arm body to be connected with the suspension.

Furthermore, the engaging lug boss comprises two symmetrical first engaging lug boss bodies connected with the shock absorber.

Has the advantages that: two first engaging lug boss bodies can carry out stable fixed with the bumper shock absorber, and the bumper shock absorber bottom atress is stable, and the shock attenuation effect is better.

Furthermore, a first lightening hole is formed between the two first connecting lug boss bodies.

Has the advantages that: the first lightening holes are arranged between the two lug bosses of the first connecting lug, so that the first lightening holes can be used as stress relief ports for the stress of the shock absorber, the stress of the arm body is reduced, and the service life of the lower cross arm is prolonged; in addition, the first lightening holes can save materials, lighten the weight of the whole lower cross arm and facilitate carrying.

Further: the lug boss also comprises a second lug boss body connected with the frame.

Has the advantages that: the arrangement of the boss body of the second connecting lug makes the arm body connected with the frame conveniently, so that the arm body is more stable.

Further: the second connecting lug boss body and the two first connecting lug boss bodies are distributed on two sides of the arm body.

Has the advantages that: by the distribution mode, the stress of the arm body is more uniform, the stress condition is better, and the service life is prolonged.

Further: and a second lightening hole is formed between the first connecting lug and the second connecting lug on the arm body.

Has the advantages that: the first lightening holes are mainly used for saving materials, the weight of the whole lower cross arm is reduced, the carrying is further facilitated, and the interference with other parts is avoided.

Drawings

FIG. 1 is a perspective view of a high strength lower cross arm of the present invention;

FIG. 2 is a side view of FIG. 1;

figure 3 is a drawing of a forging of a high strength lower cross arm of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the connecting device comprises an arm body 1, a protrusion 2, a first lightening hole 3, a second lightening hole 4, a first connecting lug boss body 5, a connecting rod 6, a connecting block 7 and a second connecting lug boss body 8.

Example one

See in particular fig. 1 to 3:

the high-strength lower cross arm comprises an arm body 1 and connecting lug bosses, wherein the connecting lug bosses are integrally formed on the arm body 1, each connecting lug boss comprises a first connecting lug boss body 5 connected with a shock absorber, first mounting holes are formed in the first connecting lug boss bodies 5, the first connecting lug boss bodies 5 are symmetrical, first lightening holes 3 are formed between the two first connecting lug boss bodies 5, each connecting lug boss further comprises a second connecting lug boss body 8 connected with a frame, a second mounting hole is formed in the second connecting lug boss body 8, the second connecting lug boss body 8 and the two first connecting lug boss bodies 5 are distributed on two sides of the arm body 1, second lightening holes 4 are formed in the arm body 1 and between the first connecting lugs and the second connecting lugs, an inclined bulge 2 is integrally formed at the left end of the arm body 1, through holes are formed in the bulge 2, and connecting rods 6 are integrally formed on two end parts on the right side of the arm body 1, a connecting block 7 is integrally formed at the end part of the connecting rod 6, and a connecting hole is formed in the connecting block 7; the side walls of the first connecting lug boss body 5 and the second connecting lug boss body 8 are first drawing section side walls, the side wall of the connecting block 7 is a second drawing section side wall, the outer wall of the arm body 1 is a drawing section outer wall, drawing angles of the first drawing section side wall, the second drawing section side wall and the drawing section outer wall are all A, A is 2-8 degrees, A is preferably 5 degrees in the embodiment, and further preferably A is 7 degrees.

The specific implementation is as follows:

when the whole high-strength lower cross arm is produced, the side walls of the first connecting lug boss body 5 and the second connecting lug boss body 8 are forged into the side wall of a first drawing section through a pre-forging die and a forming die, the side wall of the connecting block 7 is forged into the side wall of a second drawing section, and the outer wall of the arm body 1 is forged into the outer wall of the drawing section; the arm body 1 is fixedly connected with a wheel frame through a through hole on the bulge 2, then two connecting blocks 7 are fixedly connected with a torsion mechanism through connecting holes, are fixedly connected with a shock absorber through first connecting holes on two first connecting lug boss bodies 5, and are fixedly connected with the frame through second mounting holes on a second connecting lug boss body 8, so that the whole high-strength lower cross arm is mounted; when the shock absorber is used, when the shock absorber moves up and down, partial stress can be relieved through the first lightening holes 3, and the second lightening holes 4 can also prevent interference with other parts.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. Cross arm under high strength, including arm body and engaging lug boss, engaging lug boss integrated into one piece is on the arm body, its characterized in that, the arm body is located engaging lug boss lateral wall and is provided with the drawing of patterns section.

2. The high strength lower cross arm of claim 1 wherein the draft angle of the draft segments is 2-8 degrees.

3. The high strength lower cross arm of claim 1 wherein the arm body has a projection integrally formed at one end.

4. The high strength lower cross arm of claim 3 wherein the projections are obliquely disposed on the arm body.

5. The high strength lower cross arm of claim 3 wherein connecting blocks are attached to both ends of the arm body on the side away from the projections.

6. The high strength lower cross arm of claim 5 wherein the connecting lug bosses comprise symmetrical first connecting lug boss bodies connected to the shock absorbers.

7. The high strength lower cross arm of claim 6 wherein a first lightening hole is formed between the two first connecting lug boss bodies.

8. The high strength lower cross arm of claim 7 wherein the lug boss further comprises a second lug boss body attached to the frame.

9. The high strength lower cross arm of claim 8 wherein the second connecting lug boss and the two first connecting lug bosses are distributed on both sides of the arm body.

10. The high strength lower cross arm of claim 9 wherein the arm body further defines a second lightening hole between the first and second connecting lugs.