Traction bar ball assembly, and assembling tool and assembling method for traction bar ball assembly

Abstract

The invention discloses a traction bar ball assembly, an assembling tool and an assembling method for the traction bar ball assembly. The traction bar ball assembly comprises a traction bar ball joint and a traction bar ball, wherein the traction bar ball comprises a traction bar ball body and turnup structures arranged at the two ends of the traction bar ball body, the turnup structures and the traction bar ball body are integrally formed, and the turnup structures at the two ends of the traction bar ball body are matched with the traction bar ball joint to limit the traction bar ball joint in the traction bar ball. The turnup structures arranged at the two ends of the traction bar ball and integrated with the traction bar ball are buckled on the traction bar ball joint, and the traction bar ball joint is limited in the traction bar ball, so that the traction bar ball assembly is simple in structure and free from maintenance, the manufacturing cost of the traction bar ball assembly is lowered, the weight is relatively light, and the requirements of light weight is completely met. When the assembling tool and the assembling method are used to assemble, the operation is simple, the assembling time is shortened, and the assembling efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of vehicle balance suspension, and in particular relates to a thrust rod ball joint assembly, an assembly tool and an assembly method thereof. Background technique [0002] The thrust rod is widely used in single-axle or double-rear-axle heavy-duty vehicles with non-independent suspension of trucks or passenger cars. It connects the frame and the axle. The various forces and moments transmitted from the bridge or the frame ensure the movement trajectory of the axle and other functions. Therefore, the thrust rod directly affects the handling stability, ride comfort and ride comfort of the car. [0003] At present, there are mainly the following assembly methods for the cooperation between the thrust rod ball joint and the thrust rod ball head: [0004] 1. The interference fit between the ball joint and the ball head meets the function of the thrust rod; [0005] 2. The ball hinge is limited in the ...

AI Technical Summary

Problems solved by technology

[0007] In the first assembly method, there are two different fit methods: for the interference fit of the metal jacket, it is necessary to design a reasonable amount of interference, otherwise it is easy to cause the ball joint jacket or the inner cavity of the ball head to be strained and damaged; in addition, it is necessary to Enough coat thickness to ensure sufficient interference force, otherwise it is easy to appear the phenomenon of axial escape, which will increase the cost and violate the concept of lightweight

The interference fit of the elastomer requires not only a suitable profile and interference, but also a good wear resistance and resilience performance of the elastomer and sufficient bonding strength with the metal mandrel or inner sleeve to be able to Satisfy the function of the thrust rod, otherwise it is easy to cause the phenomenon of disengagement between the rubber and the metal, the asymmetry of the pressing, and the low efficiency of the pressing; moreover, during the long-term use, as the rubber bears different dynamic and static loads, the rubber will be damaged Creep causes the bearing capacity to become smaller, and axially breaks out to cause failure

[0008] In the second assembly method, the requirements for the size, material, surface roughness and surface treatment of the retaining ring are very high, and it is necessary to reasonably design the matching dimensions between the ball joint, the ball head and the retaining ring to prevent the retaining ring from falling off. The thrust rod fails; while the retaining ring self-locking mechanism generally has a more complex structure, and more auxiliary tooling is required for assembly, which is easy to confuse and lead to improper press-fitting, resulting in failure

[0009] It can be seen that the thrust rod ball head assembly in the above two traditional assembly methods has disadvantages such as complex structure, low assembly efficiency, high manufacturing cost, heavy weight, difficult maintenance, and difficulty in testing qualifications.

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