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Hydraulic drive limited-rotating-angle straight rotating actuator

A technology with limited rotation angle and actuator, applied in transmission, fluid transmission, belt/chain/gear, etc., can solve the problems of limited output torque, low reliability, and inapplicability to large torque loads, and achieve simplified transmission. The effect of simple chain and transmission mechanism and short action time

Active Publication Date: 2015-06-10
SICHUAN LINGFENG AVIATION HYDRAULIC MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The linear actuator requires a special locking mechanism and linkage mechanism to realize the mechanism swing, which not only occupies a large amount of weight and installation space of the aircraft, but also affects the overall layout of the equipment; the all-electric mechanism actuator has a complex structure and limited output torque , not suitable for driving large torque loads. At the same time, the reliability of all-electric mechanism actuators is lower than that of mechanical actuators, which often needs to be compensated in the form of redundancy, which undoubtedly increases the weight and overall layout.

Method used

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but the present invention is not limited to the scope of the described embodiments. All these ideas should be regarded as the content disclosed in this technology and the protection scope of this patent.

[0014] refer to Figure 1-Figure 3 . The direct rotary actuator with hydraulic drive and limited rotation angle includes an output cylinder 3 with oil port A and oil port B at both ends, a piston rod 4 that moves linearly in the output cylinder 3, a distribution rod 5, and a hollow piston head 6 , fixed rod 7, bearing A1 and bearing B8. The output cylinder 3 is directly used as the rotating shaft of the rotating load, the first lug 9 and the second lug 10 on the output cylinder 3 are used as the load mounting support, and the direct rotation actuator is installed on the fixed bracket through the support A1 and the support B8 superior. Oil port A and...

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Abstract

The invention discloses a hydraulic drive limited-rotating-angle straight rotating actuator. An oil port A penetrates through a piston rod (4) to be communicated with the left end of a hollow piston head (6), an oil port B penetrates through a fixing rod (7) to be communicated with the right end of the hollow piston head, the piston rod and the fixing rod are respectively connected at the two ends of a distributing rod (5) through the hollow piston head, the distributing rod connected with the piston rod at the two ends is assembled in a cavity of the hollow piston head assembled in an output barrel body (3), the piston rod movably assembled at the two ends of the distributing rod is connected with the hollow piston head through an external thread on a rod head, the screwing directions of internal threads at the two ends of the cavity of the hollow piston head are opposite, the internal threads are respectively screwed with the piston rod by a helix lead angle of more than 80 degrees to form a screw motion pair, the screwing directions of the two ends of the piston rod and helix lead angles of the two ends of the piston rod are the same, wherein one end of the hollow piston head and the piston rod form a screw motion pair, the other end of the hollow piston head and the fixing rod form a screw motion pair, the piston rod is fixed to the output barrel body, and the output barrel body outputs a torque. According to the hydraulic drive limited-rotating-angle straight rotating actuator, a transmission mechanism is simple, and the actuation time is short.

Description

technical field [0001] The invention is a rotary actuator which adopts a hydraulically driven helical pair to rotate a limited angle to realize the conversion of hydraulic energy into mechanical energy. Background technique [0002] Actuators are divided into electrohydraulic actuators, electromechanical actuators (EMA), electrohydrostatic actuators (EHA) and integrated actuator devices (IAP). Most of the swing mechanisms such as aircraft doors, rudder surfaces, and steering systems are driven by linear actuators or all-electric actuators. The linear actuator requires a special locking mechanism and linkage mechanism to realize the mechanism swing, which not only occupies a large amount of weight and installation space of the aircraft, but also affects the overall layout of the equipment; the all-electric mechanism actuator has a complex structure and limited output torque , is not suitable for driving large torque loads. At the same time, the reliability of all-electric me...

Claims

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Application Information

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IPC IPC(8): F16H47/02
CPCF16H47/02
Inventor 袁洪回
Owner SICHUAN LINGFENG AVIATION HYDRAULIC MACHINERY
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