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Emergency unloading device of hydraulic actuating element of engineering machine

A technology of hydraulic actuators and construction machinery, which is applied in the direction of fluid pressure actuators, mechanical equipment, accumulator devices, etc., and can solve problems such as failure to power on the whole machine, damage to solenoid valves, and damage to accumulators, etc., to achieve Avoid potential safety hazards, achieve safety, and ensure the effect of daily maintenance

Active Publication Date: 2019-12-24
LIUZHOU LIUGONG EXCAVATORS +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides an emergency unloading device for hydraulic actuators of construction machinery, which can solve the problem that the existing hydraulic actuators of construction machinery cannot be unloaded due to failure to power on the whole machine or damage to the pilot unlocking solenoid valve or damage to the accumulator.

Method used

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  • Emergency unloading device of hydraulic actuating element of engineering machine

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Embodiment Construction

[0015] The present invention will be described in further detail below in conjunction with accompanying drawing embodiment:

[0016] figure 1 The emergency unloading device for hydraulic actuators of engineering machinery shown includes an unloading interface 5 connected to hydraulic actuators of engineering machinery and an unloading governor 3 connected to an oil tank 10; the unloading interface 5 and the unloading regulator A detachable connecting pipe 4 is connected between the governors 3; the connecting pipe 4 is a measuring hose; the unloading governor 3 includes a speed regulating throttle valve 31 and a first pressure measuring joint 32, and the speed regulating throttle valve 31 and The first pressure measuring joint 32 is connected in series; the unloading interface 5 includes a second pressure measuring joint 51 and a pressure sensor 52, and the second pressure measuring joint 51 is connected in series with the pressure sensor 52; the connecting pipe 4 is connected...

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Abstract

The invention discloses an emergency unloading device of a hydraulic actuating element of an engineering machine and belongs to the technical field of engineering machines. The emergency unloading device comprises an unloading connector connected with the hydraulic actuating element of the engineering machine and an unloading speed controller connected with an oil tank. A detachable connection pipe is connected between the unloading connector and the unloading speed controller. The unloading speed controller comprises a speed control throttle valve and a first pressure measuring connector which are connected in series. The unloading connector comprises a second pressure measuring connector and a pressure sensor which are connected in series. The connection pipe is arranged between the first pressure measuring connector and the second pressure measuring connector. The emergency unloading device of the hydraulic actuating element of the engineering machine can solve the problem that since the whole machine cannot be electrified or a pilot unlocking electromagnetic valve is damaged or an energy accumulator is damaged, an existing hydraulic actuating element of the engineering machinecannot achieve unloading.

Description

technical field [0001] The invention relates to the technical field of construction machinery, in particular to an emergency unloading device for hydraulic actuators of construction machinery. Background technique [0002] Construction machinery hydraulic actuators are devices in the hydraulic system of construction machinery that use fluid energy to do mechanical work to achieve various actions of the whole machine. Usually, in order to ensure the normal operation and maintenance of construction machinery and avoid safety accidents caused by disassembling and assembling the hydraulic components of the complete machine under high oil pressure, it is necessary to unload the high-pressure oil in the actuator chamber back to the oil tank after the construction machinery is shut down. routine maintenance, maintenance or repairs. A construction machinery hydraulic system includes a hydraulic actuator that provides a pressure oil source through a hydraulic pump, a multi-way rever...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B1/02F15B11/17F15B13/06F15B20/00F15B21/041
CPCF15B1/022F15B11/17F15B13/06F15B20/00F15B20/002F15B21/041F15B2211/20538F15B2211/20546F15B2211/20576F15B2211/615F15B2211/71F15B2211/86F15B2211/862
Inventor 周良峰罗成发胡勇高皓玉有恩陈宗宜
Owner LIUZHOU LIUGONG EXCAVATORS
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