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Compound digital servo actuator

A digital servo and actuator technology, applied in the direction of servo meter circuit, servo motor assembly, fluid pressure actuator, etc., to achieve the effect of digital control, low cost, and reduced volume

Inactive Publication Date: 2016-06-29
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the development trend of actuators used for servo control is that they have high power density, high torque output, high reliability, high protection, small size, and easy installation and maintenance. Traditional motor-based actuators and actuators based on It is difficult for hydraulic actuators to meet the above requirements at the same time

Method used

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] Such as figure 1 As shown, the actuator is composed of rotary oil distribution valve 1, overflow valve 2, oil pump 3, check valve 4, accumulator 5, oil tank 6, two-position two-way solenoid valve 7, hydraulic cylinder 8, internal meshing gear 9. It is composed of an external meshing pinion 12, a power amplifier 10 and a controller 11.

[0030] figure 1 The middle hydraulic cylinder 8 adopts the form of three hydraulic cylinders distributed on the circumference, and this mechanism can also choose to use the mode of five or seven hydraulic cylinders evenly distributed on the circumference, and its principle remains the same, but the step angle changes. The following takes three hydraulic cylinders as an example to illustrate its working process. After increasing the number of hydraulic cylinders, its working process and principle are the same.

[0031] When the...

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Abstract

The invention discloses a compound digital servo actuator using a rotary oil distributing valve. A gear stepper device comprises at least three hydraulic cylinders, an outer engagement gear fixed in a center shaft position, and an inner engagement gear capable of performing a plane motion; a small gear center shaft is an output shaft of the gear stepper device; the hydraulic cylinders are uniformly distributed on the outer side of the inner engagement gear, are bonded with the outer side of the inner engagement gear, and push the inner engagement gear to perform the plane motion; and a controllable oil distributing device distributes oil to the hydraulic cylinders according to action demands of the hydraulic cylinders. The compound digital servo actuator adopts hydraulic oil as a power source, adopts the rotary oil distributing valve to realize distribution of the hydraulic oil, and uses plungers of the hydraulic cylinders for driving the engagement gears to finally realize the stepper output. Compared with servo motor output, the compound digital servo actuator obviously increases the torque, and reduces the size; and compared with common hydraulic output, the compound digital servo actuator can realize accurate stepper output.

Description

technical field [0001] The present invention relates to a mechanical, hydraulic and motor composite digital servo actuator (hereinafter referred to as actuator). More precisely, the present invention relates to an integrated, high-torque digital servo actuator consisting of a micro speed-regulating motor, a rotary oil distribution valve, a hydraulic accumulator, an oil circuit system, an internal meshing gear pair, and a controller. . Background technique [0002] Servo actuators generally refer to output devices that can convert existing mechanical energy, electrical energy, or other energy forms into target motion forms in certain specific ways. At present, the traditional and relatively mature actuators include actuators based on motor drive, actuators based on hydraulic servo control and actuators based on pneumatic control technology. Various actuators based on servo motors (or stepping motors) can be conveniently combined with corresponding reducers through motors to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/02
CPCF15B13/022F15B2211/405
Inventor 王林翔栾宇李昕
Owner ZHEJIANG UNIV
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