Press-mounting tool and press-mounting method for axle-box pull rod

Abstract

The invention discloses a press-mounting tool for an axle-box pull rod. The press-mounting tool comprises a base, two supporting cylinder assemblies which are arranged on the base and arranged in the vertical direction, guiding cylinder assemblies and pressing heads. The press-mounting tool is characterized in that the two supporting cylinder assemblies are arranged in an aligned mode, a rod body of the axle-box pull rod is horizontally arranged on the supporting cylinder assemblies, the guiding cylinder assemblies are positioned on the rod body, and the guiding cylinder assemblies, press-mounting holes of the rod body and the supporting cylinder assemblies are coaxially aligned from top to bottom; pull rod spherical hinges which are arranged in the vertical direction penetrate through the guiding cylinder assemblies, the lower ends of the pull rod spherical hinges stretch into the press-mounting holes of the rod body, and the upper ends of the pull rod spherical hinges are covered with pressing blocks. According to the press-mounting tool for the axle-box pull rod, the press-mounting precision is high, and the center distance tolerance of the axle-box pull rod can be effectively decreased. The invention further relates to a press-mounting method for the axle-box pull rod.

Description

technical field [0001] The invention relates to a tool for press-fitting a box tie rod, which is used for press-fitting the ball hinge and the rod body of the box tie rod, and also relates to a press-fitting method for the box tie rod. Background technique [0002] The axle box tie rod is an important connecting piece connecting the bogie and the car body, such as figure 1 As shown, it is mainly composed of a ball joint and a rod body with interference fit, and the distance between the central axes of the two ball joints is called the center distance. It plays the role of transmitting traction and braking force. Therefore, the quality of its assembly is directly related to the mechanical performance of the vehicle. [0003] Most of the press-fitting tools for the axial phase tie rods in the prior art include a supporting part for supporting the rod body and a pressure head for pushing the ball joint down, and some also include a positioning device for positioning the downw...

AI Technical Summary

Problems solved by technology

In this scheme, a guide cylinder is designed in the inner cylinder of the support cylinder to guide the downward pressure of the metal ball joint, but it cannot be guaranteed whether the metal ball joint is pressed into the thrust rod along the axial direction, and the precision of its press-fitting needs to be improved

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