Specific track rotating arm type hydraulic tensioning device for vehicle body assembly

Abstract

The invention provides a specific track rotating arm type hydraulic tensioning device for vehicle body assembly. The specific track rotating arm type hydraulic tensioning device is installed on a high-precision T-shaped groove plate arranged in the full-length direction. Flexible adjustment in the longitudinal direction and the width direction of a vehicle body is adjusted through a longitudinal adjusting mechanism and a transverse adjusting mechanism. A pressing mechanism comprises a pressing arm, one end of the pressing arm is rotationally connected with a connecting block, and the other end of the pressing arm is used for pressing the assembled vehicle body. The pressing arm is provided with a sliding groove. A pin penetrates the sliding groove to slide in the sliding groove. The two ends of the pin are fixed to a supporting plate which is fixed to a supporting base. One end of a connecting block is connected with a piston rod of a hydraulic driving mechanism which is installed at the lower end of a supporting base, a sliding groove capable of moving along a specific track and a rotating arm capable of moving along a specific track are designed and move along the specific track, it is guaranteed that the rotating arm is tensioned to reach a tensioned position, a tensioning arm is driven by a hydraulic system to achieve automatic and accurate tensioning, it is guaranteed that a bottom frame is automatically assembled in place, deflection accuracy of the vehicle body is guaranteed, and the vehicle body assembly efficiency is improved.

Description

technical field [0001] The invention belongs to the field of rail vehicle assembly, and in particular relates to a tensioning device for rail vehicle body assembly. Background technique [0002] The traditional rail vehicle stainless steel car body assembly chassis is tightened and fixed by manual chain hoists to complete the pulling and fixing. The manual tensioning method of the manual chain hoists has the following disadvantages: 1) The operation efficiency is low; 2) The tensioning force is unstable and the pulling If the tightening force is too small, it is easy to cause the vehicle body to be assembled without being effectively pulled, causing the deflection of the vehicle body to fail to meet the requirements; 3) If the tensioning force is too large, it will cause local damage to the vehicle body. Contents of the invention [0003] The invention provides a hydraulic tensioning device with a specific track pivoting arm for car body assembly. By designing a pivoting a...

AI Technical Summary

Problems solved by technology

[0002] The traditional rail vehicle stainless steel car body assembly chassis is tightened and fixed by manual chain hoists to complete the pull and fixation. The manual chain hoist manual tensioning method has the following disadvantages: 1) low operating efficiency; 2) the tension force is unstable, and the pull If the tightening force is too small, it will easily lead to the failure of the car body to be assembled effectively, causing the deflection of the car body to fail to meet the requirements; 3) Excessive tension will cause local damage to the car body

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