Variable-load tool

Abstract

The invention discloses a variable-load tool, and belongs to the field of test devices. The variable-load tool comprises a pressure bearing block, a pressure shaft and a hydraulic loading system, wherein a cylindrical pressure cavity is arranged in the pressure bearing block; an axle hole, an oil inlet hole and an oil outlet hole are further formed in the pressure bearing block; the axle hole is positioned in one end of the pressure cavity; the pressure shaft is inserted into the axle hole; the first end of the pressure shaft is equipped with a shaft coupler; the second end of the pressure shaft is equipped with an outer flange; the oil inlet and the axle hole are separately formed in reverse two sides of the outer flange; the oil inlet and the oil outlet are positioned at the same side ofthe outer flange; and after the pressure cavity is pressurized, the outer flange can press onto the inner wall of the pressure cavity. During running-in, the pressure shaft can be connected with theoutput shaft of to-be-run equipment through the shaft coupler, and friction force between the outer flange and the inner wall of the pressure cavity is equal to load which acts on the output shaft ofthe to-be-run equipment, so that a working condition during running-in is the same with the working condition in practical use, and therefore, the running-in effect is improved, and running-in time isshortened.

Description

technical field [0001] The invention relates to the field of testing devices, in particular to a variable load tooling. Background technique [0002] In industrial production, a lot of equipment needs to be run-in after the production is completed and before the official use, so that the equipment will be more stable when it is officially used. [0003] Take the gearbox as an example. After the production is completed, the input shaft of the gearbox is usually driven by a motor or other power to make the gears in the gearbox rotate and run in. [0004] Since the gearbox is actually working, in addition to the input shaft having power input, the output shaft also has a load, and during the running-in, the output shaft is in an unloaded state, which makes the working conditions of the gearbox during the running-in and the actual use of the gearbox The working conditions are different, resulting in poor running-in effect and long running-in time. Contents of the invention ...

AI Technical Summary

Problems solved by technology

[0004] Since the gearbox is actually working, in addition to the input shaft having power input, the output shaft also has a load, and during the running-in, the output shaft is in an unloaded state, which makes the working conditions of the gearbox during the running-in and the actual use of the gearbox The working conditions are different, resulting in poor running-in effect and long running-in time

Images