Dual-redundancy hydraulic machinery clutch mechanism for mechanical backup actuator

A technology of hydraulic machinery and clutch mechanism, which is applied in the field of hydraulic pressure, can solve the problems of actuator working mode disorder, insufficient locking force, impact response, etc., and achieve the effect of avoiding mode conversion failure and improving reliability

Active Publication Date: 2017-12-15
XIAN FLIGHT SELF CONTROL INST OF AVIC
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AI Technical Summary

Problems solved by technology

Since the transition to the manual control state is generally accompanied by a serious degradation of the working state of the fly-by-wire flight control system, the failure of the lock and the lack of locking force that may be caused by the non-redundant designed hydraulic clutch mechanism will cause the actuator to work in a modal state. Disturbance or shock response, affecting the normal handling quality of the aircraft, and threatening flight safety in extreme cases

Method used

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  • Dual-redundancy hydraulic machinery clutch mechanism for mechanical backup actuator

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Embodiment Construction

[0011] The present invention will be described in further detail below.

[0012] A double-redundancy hydraulic-mechanical clutch mechanism for a mechanical backup actuator is mainly used for the conversion between the manual operation state and other operation states of the actuator with the mechanical backup operation function. Actuators with mechanical backup control function generally have manual mechanical control function and other control functions, such as fly-by-wire control function, fault return function, etc. When it is necessary to switch to manual operation, the mechanical control lever system is connected with the mechanical control valve through the double-redundant hydraulic mechanical clutch mechanism, and combined with the switching valve to drive the actuator to follow the command movement in different working modes.

[0013] In the manual control mode, the hydraulic lock is used to realize the connection between the mechanical control lever system and the m...

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Abstract

The invention discloses a dual-redundancy hydraulic machinery clutch mechanism for a mechanical backup actuator. The mechanism is characterized by comprising a hydraulic lock (1) and two sets of hydraulic machinery conversion control mechanisms; each set of hydraulic machinery conversion control mechanisms is matched with the hydraulic lock (1); and when a telex working mode of the actuator is failed, the intervention of a mechanical backup operation function is realized. Through design of the dual-redundancy hydraulic machinery clutch mechanism, the conversion of manual operation and other operation functions is realized, the clutch conversion reliability and safety are improved, and the mode conversion failure, the dysfunction or the hydraulic impact possibly caused by a traditional clutch mechanism is prevented.

Description

technical field [0001] The invention belongs to the technical field of hydraulic pressure, and relates to a double-redundancy hydraulic-mechanical clutch mechanism for a mechanical backup actuator for an actuator. Background technique [0002] Actuators with mechanical backup are widely used in high-reliability and high-safety fly-by-wire flight control systems, and hydraulic locks are usually used as hydraulic-mechanical clutch mechanisms to realize the conversion between manual control and other control functions. The hydraulic-mechanical clutch mechanism of traditional mechanical backup actuators is directly controlled by a hydraulic source, or controlled by a special function valve, and generally does not adopt a redundant design. Since the transition to the manual control state is generally accompanied by a serious degradation of the working state of the fly-by-wire flight control system, the failure of the lock and the lack of locking force that may be caused by the no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B11/16F15B15/26
Inventor 王乾花韬薛剑樊战旗张伟段西林
Owner XIAN FLIGHT SELF CONTROL INST OF AVIC
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