A Pneumatic Endurance Test System for Checking Weighing Apparatus

Abstract

The invention belongs to the field of technical detection, and in particular relates to a pneumatic durability test system for weighing instruments, including a fixed bracket, a cylinder, a fixed plate, a support frame, a weight plate, weights, a carrier, an air circuit and a reversing valve , the control program and its printing equipment, the cylinder is fixed on the fixed bracket, the fixed plate is connected to the piston rod of the cylinder through the hole in the center, the upper end of the support frame is connected to the lower end of the fixed plate, and the support plate at the lower end of the support frame is provided with a tapered The hole in the cone, the cone and the guide rod extending along the axis of the cone are connected to the weight plate through the cone hole on the support plate at the lower end of the support frame, and the carrier of the weighing instrument is located under the weight plate. The automatic repetitive loading system of the present invention is small in volume, stable in operation and low in noise, can be used in combination, and can apply load to the target area of ​​the weigher to be inspected, and at the same time, will not cause impact on the weigher to be inspected during the inspection.

Description

technical field [0001] The invention belongs to the field of technical detection, and in particular relates to a pneumatic durability test system for weighing apparatus tests. Background technique [0002] At present, most of the durability test systems in China use mechanical eccentric wheel or cam structure during the test to lift up the weight each time and then put it down. Although its function can meet the test requirements, but the mechanical loading noise is very large, and the occupied area is relatively large. Since the durability testing machine is used in the durability test of weighing instruments, the following basic conditions must be met when loading: ① It must be ensured that each loading is in the same fixed area; ② The load added each time must be a fixed value , that is, the system must be cleanly disengaged after loading; ③Ensure that the weight can be automatically centered (returned) when the weight is lifted, so as to prepare for reloading; ④When the...

AI Technical Summary

Problems solved by technology

[0003] In view of the large loading noise of the durability test system in the prior art, it is impossible to ensure that the load can be completely loaded on the target area on the test object and avoid the impact of the load on the checked weighing instrument. type durability test system, its technical scheme is as follows:

Images