Emergency unloading device for construction machinery hydraulic actuators

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 inability to unload, damage to solenoid valves, and damage to accumulators

Active Publication Date: 2021-05-14
LIUZHOU LIUGONG EXCAVATORS +2
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  • Summary
  • 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 for construction machinery hydraulic actuators

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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 for hydraulic actuators of engineering machinery, which belongs to the technical field of engineering machinery. Governor; a detachable connecting pipe is connected between the unloading interface and the unloading governor; the unloading governor includes a speed regulating throttle valve connected in series and a first pressure measuring joint The unloading interface includes a second pressure measuring joint and a pressure sensor connected in series; the connecting pipe is arranged between the first pressure measuring joint and the second pressure measuring joint. The invention can solve the problem that the hydraulic actuators of the existing engineering machinery cannot be unloaded due to failure of the complete machine to be powered on or damage to the pilot unlocking electromagnetic valve or damage to the accumulator.

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 Patents(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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