Shaft sleeve pressing system and sleeve pressing machine

Abstract

The embodiment of the invention provides a shaft sleeve pressing system and a sleeve pressing machine, relates to the technical field of shaft sleeve installation, and aims at solving the problem thatin the existing operation that a shaft sleeve is pressed into a shaft sleeve hole, shaft sleeve playing or shaft sleeve interference is likely to happen. The shaft sleeve pressing system comprises athree-position four-way valve, a sleeve pressing oil cylinder and a first branch. A pressure sensor is arranged on the first branch, a controller is used for receiving pressure signals which representthe oil pressure value and are sent by the pressure sensor, and the three-position four-way valve is in any state of the right position and the middle position. When the three-position four-way valveis located at the right position and oil enters a rod cavity of the sleeve pressing oil cylinder, the shaft sleeve is pressed in the shaft sleeve hole, the pressure sensor detects the oil inlet oil pressure of the rod cavity of the sleeve pressing oil cylinder, and when the oil pressure value is in the reasonable range, the controller controls the three-position four-way valve to be continuouslylocated at the right position, the shaft sleeve is continuously pressed in the shaft sleeve hole. When the oil pressure value exceeds the reasonable range, it is shown that the shaft sleeve and the shaft sleeve hole are not matched, the controller controls the three-position four-way valve to be located at the middle position, continuous pressing of the shaft sleeve into the shaft sleeve hole is stopped, and the fool-proof function is achieved.

Description

technical field [0001] The invention relates to the technical field of shaft sleeve installation, in particular to a shaft sleeve pressing system and a sleeve pressing machine. Background technique [0002] At present, the bushing of the working device (boom / stick) of construction machinery excavator is pressed into the bushing hole by a special pressing machine. As long as there is output pressure when the pressing machine is working, the bushing cylinder will start to work to press the bushing Press into the bushing hole. The existing pressing machine cannot judge the pressure, and the pressing process depends entirely on experience. When the size of the bushing hole is out of tolerance, it will cause the problem of bushing shifting or bushing interference after the bushing is pressed. Contents of the invention [0003] The purpose of the present invention includes, for example, to provide a bushing pressing system, which can improve the problem that the existing bushin...

AI Technical Summary

Problems solved by technology

The existing pressing machine cannot judge the pressure. The pressing process depends entirely on experience. When the size of the bushing hole is out of tolerance, it will cause the problem of sleeve shifting or bushing interference after pressing the bushing.

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