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Cabin door transient actuating device with low power demand

An actuating device and low-power technology, applied in the field of cabin door transient actuating devices, can solve the problems of low reliability of flow control and complex implementation of reducing main engine power, and achieve the effect of reducing power demand

Active Publication Date: 2019-10-01
QINGAN GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention solves the problems in the prior art that the power reduction of the main engine is complicated and the reliability of the flow control is not high

Method used

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  • Cabin door transient actuating device with low power demand

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Embodiment Construction

[0014] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0015] see figure 1 , a low power demand hatch door transient actuation device of the present invention includes a flow regulating valve 3, a servo valve 2, a high and low pressure selection valve 1, and a balance valve 4 sequentially connected along the oil circuit, wherein the valve connected from the servo valve 3 The load pipelines A and B are respectively connected to the two load chambers of the variable motor 6, and the high-pressure oil in the load pipelines A and B is introduced into the cavity without springs in the balance valve 4 through the high and low pressure selection valve 1, and the low-pressure oil is introduced into The chamber in which the spring is installed in the balance valve 4. The load line A is connected to the two input ends of the high and low pressure selection valve 1, and the cavity on one side of the high and low pressure s...

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Abstract

The invention belongs to an onboard cabin door driving technology, and particularly relates to a cabin door transient actuating device with low power demand. An aircraft oil supply sequentially passesthrough a flow regulating valve and a servo valve and then is connected with two load cavities of a variable motor through load pipelines A and B; high-pressure oil in the load pipelines A and B is guided into a cavity, without a spring, of the flow regulating valve, a cavity, without a spring, of a balance valve and an input end of the balance valve through a high-pressure and low-pressure selection valve; low-pressure oil is guided into a cavity, with a spring, of the flow regulating valve, a cavity, with a spring, of the balance valve and a cavity, with a spring, of a variable piston; an output end of the balance valve communicates with a cavity, with an output rod, of the variable piston; and the output rod of the variable piston is connected with a swash plate of the variable motor.By adjusting the displacement of a hydraulic motor, the load pressure difference reaches the maximum power output point, the load is changed but the flow consumed by the system is unchanged, when no load exists or the pressure difference is smaller than the pressure difference of the maximum power point, the flow limitation is achieved through main oil supply throttling, and the power demand of the system is reduced.

Description

technical field [0001] The invention belongs to an airborne cabin door drive technology, in particular to a cabin door transient actuation device with low power requirements. Background technique [0002] At present, the drive system of the aircraft mission door generally adopts the form of hydraulic drive. Due to the large aerodynamic load and fast movement speed of the door, the system requires a lot of power, which accounts for a large proportion of the entire hydraulic system of the aircraft. When the fuel supply pressure of the aircraft is constant, the flow demand is very large, which directly affects the design of the aircraft hydraulic system and the matching of engine power. Therefore, under the premise of meeting the system requirements, reducing the power demand of the mission door drive system is of great significance to the aircraft. Aircraft supply pressure is constant pressure, general valve-controlled fixed-displacement motor system, the maximum power extrac...

Claims

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Application Information

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IPC IPC(8): F15B13/04E05F15/50
CPCE05F15/50F15B13/04F15B2211/40576F15B2211/7058
Inventor 封彦锋
Owner QINGAN GRP
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