CN216761893U

CN216761893U - Steering knuckle

Info

Publication number: CN216761893U
Application number: CN202123442629.6U
Authority: CN
Inventors: 李泽光; 李来平; 裴洁; 张春云; 魏刚; 常亮; 王江
Original assignee: Inner Mongolia North Hauler JSCL
Current assignee: Inner Mongolia North Hauler JSCL
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-06-17
Anticipated expiration: 2031-12-31

Abstract

The utility model discloses a steering knuckle, comprising: the annular topological structure and the front shaft are respectively connected to two sides of the disc body, and two pin holes are formed in the annular topological structure and located on the same axis; the curved surface that the annular topological structure outside tip encloses is shape of the hyperboloid of shape of a saddle, and two pinhole settings are in the protruding position of the hyperboloid of shape of a saddle. The steering knuckle obtained by the utility model has a reasonable structure, and can avoid the problems of crack expansion and integral failure of components caused by the fracture of the root of the stud on the steering knuckle in the prior art.

Description

Steering knuckle

Technical Field

The utility model belongs to the field of mining dump trucks, and particularly relates to a steering knuckle.

Background

The mining dump truck belongs to an off-highway dump truck and is mainly used for transporting ores and mineral aggregates in large-scale open mines. At present, the specification of the mining dump truck is larger and larger, the bearing capacity is increased gradually, and the mining dump truck is developed into a giant mine car with the load of 400 tons. The requirements of the mining dump truck on the bearing capacity of the vehicle chassis travelling mechanism are higher and higher. Steering knuckles (or front axles) are also of increasing interest for their load-bearing properties as an important component of the chassis running gear of a vehicle.

At present, because mine roads are poor, the road surface vibrates violently, the service life is short, and the situation that the stud root on the back of the steering knuckle is broken results in the damage of the steering knuckle, and the damage of the steering knuckle can cause the problems of safe and huge vehicle maintenance.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a steering knuckle which is reasonable in structure and can solve the problems that cracks are enlarged and parts are integrally failed after the root of a stud on the steering knuckle is broken in the prior art.

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

a knuckle, comprising: the annular topological structure and the front shaft are respectively connected to two sides of the disc body, and two pin holes are formed in the annular topological structure and located on the same axis; the curved surface that the annular topological structure outside tip encloses is shape of the hyperboloid of shape of a saddle, and two pinhole settings are in the protruding position of the hyperboloid of shape of a saddle.

Further, a shaft sleeve is arranged in the pin hole.

Furthermore, a pin shaft is arranged in the pin hole and connected with a connecting plate, and the connecting plate is connected with a steering mechanism.

Further, the disk body is connected with the flange plate.

The utility model has the technical effects that:

in the steering knuckle, the disc body and the annular topological structure are connected into a whole, components such as connecting lugs and studs in the prior art are eliminated, the overall strength and rigidity are improved, and the overall service life of the components is doubled.

The steering knuckle provided by the utility model is reasonable in structure, and can avoid the problems of crack expansion and integral failure of components caused by the fracture of the root of a stud on the steering knuckle in the prior art.

Drawings

FIG. 1 is a structural view of a knuckle according to the present invention;

FIG. 2 is a rear end structural view of the knuckle of the present invention;

FIG. 3 is a schematic view of the knuckle of the present invention mounted on a front axle;

FIG. 4 is a diagram showing the results of finite element analysis of the knuckle according to the present invention.

Detailed Description

The following description sufficiently illustrates specific embodiments of the utility model to enable those skilled in the art to practice and reproduce it.

Fig. 1 is a view showing a construction of a knuckle according to the present invention. Fig. 2 is a rear end structural view of the knuckle according to the present invention.

The knuckle includes: annular topological structure 1, disk body 2, front axle 3, annular topological structure 1, front axle 3 connect respectively in disk body 2 both sides, are provided with pinhole 11 on the annular topological structure 1, and two pinholes 11 are located same axis.

One end of the ring-shaped topological structure 1 is connected to the disc body 2, the curved surface enclosed by the other end is saddle-shaped hyperboloid, and the two pin holes 11 are arranged at the convex positions of the saddle-shaped hyperboloid. Bushings may be provided in the pin holes 11 to reduce friction.

Fig. 3 is a schematic view showing the knuckle according to the present invention mounted on a front axle.

And pin shafts 4 are arranged in pin holes 11 of the annular topological structure 1, and the annular topological structure 1 is connected to two sides of the front axle 5 by the pin shafts 4. The pin 4 is connected with a connecting plate 51, and the connecting plate 51 is connected with a steering mechanism. The disc body 2 is used for connecting a flange plate.

The design method of the steering knuckle comprises the following steps:

step 1: the vertical ribs and the connecting lugs are eliminated, and the back of the disk body 2 is additionally provided with an annular topological structure 1; designing a saddle-shaped hyperboloid shape of a curved surface surrounded by the outer side end of the ring-shaped topological structure 1;

the utility model redesigns the knuckle, designs the required supporting structure (the annular topological structure 1) on the back of the front axle 3 under the service life according to the topology, the finite element theory, the structural mechanics and the fatigue life theory, and can avoid the problem of fracture in the service life in the past on the premise of not influencing the assembly of other parts, not interfering with parts such as a front axle and the like in the motion process and slightly increasing the weight.

In the prior art, because the stud on the back of the steering knuckle deforms when the steering knuckle is pressed, the position and the structure of the stud cannot support the deformation, and cracking can be caused. According to the theory of topology and structural mechanics, the rigidity of the whole support is increased, the flexibility of the local support is increased, the local cracking of the part can be effectively inhibited, and the integral strength of the part cannot be reduced.

Because the stress of the stud at the back of the steering knuckle is concentrated, the stud at the back of the steering knuckle is easy to crack, the stud at the back of the steering knuckle is deleted by applying a structural mechanics theory, and the annular topological structure 1 replaces the stud and the connecting lug, so that the rigidity of a high stress area can be reduced, and the stress concentration is avoided. In the specific design process, the topological and structural mechanics theory is adopted, the existing stud is removed, the local rigidity is reduced, and the annular topological structure 1 is added on the back surface of the disc body 2 instead.

And then, the overall structure is strengthened by applying the theory of topology and structural mechanics, the load reduction after the stud deletion is avoided, and the curved surface enclosed by the end part of the ring-shaped topological structure 1 is designed to be saddle-shaped hyperboloid, so that the rigidity is further improved compared with the original level, the bearing capacity of the part is stronger, and the problem of local stress concentration is avoided.

The load under the working condition is applied to the part, the stress of the structure is analyzed by applying a finite element theory, the region with the standard exceeding stress of the root part of the original rib disappears, so that the problem of stress concentration at the position is avoided by locally reducing the rigidity (increasing the flexibility), and meanwhile, the whole rigidity is improved without reducing the bearing capacity of the part due to the addition of the annular topological structure 1. According to finite element calculation, the ultimate load of a single part can reach 150 tons, the integral stress value of the part meets the design requirement, the maximum stress value disappears from the root of the original stud and appears in a region at the top and a region at the front end of the annular topological structure 1, and the maximum stress value is still far smaller than the allowable stress value of the material after the safety factor is considered. The service life is improved by 2 times according to the fatigue theory.

Step 2: the thickness and the height of the annular topological structure 1 are determined through finite element iterative calculation, and pin holes 11 are respectively formed in two protrusions on the annular topological structure 1.

The ring topology structure 1 not only meets the requirements of processing, manufacturing and cost, but also meets the requirements of installation and bearing, and the performance is greatly improved under the requirement that the cost and the weight are not increased greatly.

The terminology used herein is for the purpose of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. A steering knuckle, comprising: the annular topological structure and the front shaft are respectively connected to two sides of the disc body, and two pin holes are formed in the annular topological structure and located on the same axis; the curved surface that the annular topological structure outside tip encloses is shape of the hyperboloid of shape of a saddle, and two pinhole settings are in the protruding position of the hyperboloid of shape of a saddle.

2. The knuckle of claim 1, wherein a bushing is disposed within the pin bore.

3. The knuckle of claim 1, wherein the pin holes have pins mounted therein, the pins being connected to a connection plate, the connection plate being connected to the steering mechanism.

4. The knuckle of claim 1, wherein the disc is connected to the flange plate.