Vehicle frame fatigue test machine for hand moving vehicle

Abstract

The invention discloses a vehicle frame fatigue test machine for a hand moving vehicle. The vehicle frame fatigue test machine for the hand moving vehicle comprises a pedestal, a supporting platform plate and a hydraulic oil cylinder, wherein the supporting platform plate is arranged on the pedestal and is adjustable in height; the hydraulic oil cylinder is rotatably connected with the pedestal; arocker arm fixing base is arranged on the hydraulic oil cylinder; an upper position sensor and a lower position sensor which are fixedly connected with the hydraulic oil cylinder are arranged above the rocker arm fixing base; the upper position sensor and the lower position sensor are in signal connection with a control assembly; the hydraulic oil cylinder is connected with an oil supply system;the oil supply system is controlled by the control assembly; the vehicle frame fatigue test machine for the hand moving vehicle also comprises a balancing weight positioned above the pedestal; and side frames which are in rolling connection with the pedestal are arranged on the two sides of the balancing weight. The fatigue test machine adopts automatic control, has high test efficiency, has a memory function after power failure, is safe and convenient to operate, and has perfect integrated function and high practicability.

Description

technical field [0001] The invention relates to the field of mechanical technology, more specifically, it relates to a frame fatigue testing machine for hand trucks. Background technique [0002] The frame of the hand truck is the main load-bearing part of the car body, and the guarantee of its strength is particularly important. However, the materials used must also be reasonable, otherwise it will cause serious waste and affect the manufacturing cost and market competitiveness of the whole vehicle. The tensile strength and yield strength of mechanical parts can be obtained through theoretical calculations, but another important parameter is fatigue strength, which directly affects the service life of the product. Since fatigue strength is related to factors such as material, process, and product shape, there is currently no calculation method for this parameter that can be applied to various parts, and the results can only be obtained through testing. [0003] Therefore,...

AI Technical Summary

Problems solved by technology

[0004] The previous fatigue test was a manual test. The tester drove the manual oil pump to raise the hand truck by shaking the handle of the hand truck. However, the manual oil pump needs to be shaken more than 20 times to lift the handle to the top. Such a tester can only feed the oil pump in a day. Up and down more than 200 times

A frame needs to be lifted and lowered 5,000 times with full load to be considered qualified, so manual testing takes more than half a month to get the results, the efficiency is very low, and the overall effect is not good

Images