Oil injection and air exhaust system of electro-hydraulic actuating mechanism

An electro-hydraulic actuator and exhaust system technology, which is used in fluid pressure actuation system components, mechanical equipment, servo meter circuits, etc. To achieve the effect of resisting oil pollution, strong anti-pollution ability and high work efficiency

Pending Publication Date: 2018-02-16
SHENYANG NORTHEAST ELECTRIC POWER CONTROL
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AI Technical Summary

Problems solved by technology

The current method used is to fill the system with an oil gun, but this method has the following problems: first, the work efficiency is low, and the oil injection speed is only a few milliliters of oil per second; secondly, when the oil gun is f

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  • Oil injection and air exhaust system of electro-hydraulic actuating mechanism
  • Oil injection and air exhaust system of electro-hydraulic actuating mechanism

Examples

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Embodiment Construction

[0012] see figure 1 , which includes an electro-hydraulic actuator consisting of a drive cylinder 12 and an integrated electro-hydraulic actuator 11. The drive cylinder 12 has two left and right oil chambers, the left oil chamber is provided with a left oil discharge port B1, and the right oil chamber is provided with a right row Oil exhaust port B2; oil port P0 of oil tank 18, gear pump 20, hydraulic oil filter 9, oil injection port P1 of integrated electro-hydraulic actuator, oil exhaust port B1, B2 of the driving cylinder and oil return of the oil tank Ports T1 and T2 form a closed-loop oil circuit; the oil circuit between the oil port of the oil tank and the gear pump is inserted into the oil tank by the oil suction pipe 19 of the gear pump; the oil circuit between the gear pump and the hydraulic oil filter is the main oil circuit block The first section of the main oil passage 8.1 formed in 6, the hydraulic oil filter and the gear pump are respectively installed on the to...

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Abstract

The invention provides an oil injection and exhaust system of an electro-hydraulic actuator. The problem to be solved is how to improve the oil injection efficiency. , the filter, the oil filling port of the electro-hydraulic actuator, the oil discharge port of the oil cylinder and the oil return port of the fuel tank form a closed-loop oil circuit; the oil circuit between the gear pump and the filter is the oil channel formed in the main oil circuit block; The first half of the oil circuit between the filter and the electro-hydraulic actuator is the oil passage formed in the main oil circuit block to the oil outlet of the main oil circuit block, and the second half of the oil supply hose; each oil discharge row of the oil cylinder The oil passage between the air port and the oil return port of the oil tank is a transparent oil pipe, and a cut-off valve is arranged on each transparent oil pipe; the gear pump and the hydraulic oil filter are installed on the main oil passage block.

Description

technical field [0001] The invention relates to an electro-hydraulic actuator, in particular to an oil injection and exhaust system for the electro-hydraulic actuator. Background technique [0002] The electro-hydraulic actuator (see CN 204226323U) composed of the driving cylinder 3 and the integrated electro-hydraulic actuator 4 is a closed oil system. In the process of manufacture and maintenance, to fill such an oil system with oil, you cannot use a dispenser or directly pour the oil into the oil tank like filling an open system. Since there is pressure at the suction port of the pump in the closed system, it is necessary to discharge the air in the system to inject oil into the system, and it needs multiple reciprocations to complete. The current method used is to fill the system with an oil gun, but this method has the following problems: first, the work efficiency is low, and the oil injection speed is only a few milliliters of oil per second; secondly, when the oil g...

Claims

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Application Information

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IPC IPC(8): F15B21/00F15B21/04
CPCF15B21/005F15B21/041F15B21/044F15B2211/615
Inventor 刘宝军郑学明董连杰刘观华王永佳雷利
Owner SHENYANG NORTHEAST ELECTRIC POWER CONTROL
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