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A two-dimensional hydraulic cylinder, and a variable damping control type two-dimensional hydraulic cylinder

A hydraulic cylinder, two-dimensional technology, applied in the direction of fluid pressure actuators, servo motor components, mechanical equipment, etc., can solve the problems of increasing the complexity of the hydraulic system, and achieve the effect of increasing the structure of the cylinder liner

Active Publication Date: 2020-10-16
ZHEJIANG UNIV CITY COLLEGE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional hydraulic cylinder consists of a cylinder body, a piston and a piston rod. There are oil inlet and outlet ports on the cylinder body. The movement of the piston and piston rod is realized through the entry and exit of hydraulic oil, and various control functions are realized through various control valves. Increased the complexity of the hydraulic system to a certain extent

Method used

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  • A two-dimensional hydraulic cylinder, and a variable damping control type two-dimensional hydraulic cylinder
  • A two-dimensional hydraulic cylinder, and a variable damping control type two-dimensional hydraulic cylinder
  • A two-dimensional hydraulic cylinder, and a variable damping control type two-dimensional hydraulic cylinder

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Embodiment Construction

[0053] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0054] In the present invention, unless stated to the contrary, the used orientation words such as "up, down, left, and right" generally refer to up, down, left, and right as shown with reference to the accompanying drawings.

[0055] Specifically, in Figure 1 to Figure 7 In the shown first embodiment, a two-dimensional (2D) hydraulic cylinder includes a cylinder body 1, a cylinder liner 14, a front end cover 11, a rear end cover 6, a piston rod 30 and a piston; also includes a limit rod 8,34 , a lever 38, a top block 3, a guide mechanism and a guide mechanism fixing frame 12; the cylinder 1 is provided with an oil inlet 10 and an oil outlet 9.

[0056] Speci...

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Abstract

The invention discloses a unilateral variable damping control type 2D hydraulic cylinder based on the hydraulic half bridge. The hydraulic cylinder comprises a cylinder body, a cylinder sleeve, a front end cover, a rear end cover, a piston rod and a piston and further comprises a stepping motor, an ejecting block, a displacement sensor (LVDT), a guide mechanism and a guide mechanism fixed frame; the novel hydraulic cylinder structure is designed, the cylinder sleeve structure is added, a high pressure hole and a low pressure hole are designed in the piston and can be matched with the cylindersleeve to form the hydraulic damping half bridge, the stepping motor drives the cylinder sleeve to directly control the hydraulic cylinder piston rod to stretch out and draw back, the displacement sensor (LVDT) is used for detecting the piston rod displacement, digital control over the hydraulic cylinder is achieved, a hydraulic control valve is omitted, and the hydraulic system is simplified.

Description

【Technical field】 [0001] The present invention relates to a hydraulic actuator, in particular to a two-dimensional (2D) hydraulic cylinder. In some embodiments of the present invention, it also relates to a digitally controlled two-dimensional hydraulic cylinder with unilateral variable damping based on a hydraulic half bridge. 【Background technique】 [0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating or oscillating motion. It is simple in structure and reliable in operation. When it is used to realize reciprocating motion, the deceleration device can be eliminated, and there is no transmission gap, and the motion is stable. Therefore, it is widely used in various mechanical hydraulic systems. [0003] The traditional hydraulic cylinder consists of a cylinder body, a piston and a piston rod. There are oil inlet and outlet ports on the cylinder body. The movement of the piston and piston...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B15/14F15B15/20F15B15/28F15B13/044
CPCF15B13/0444F15B15/14F15B15/1428F15B15/1433F15B15/1447F15B15/149F15B15/202F15B15/2815
Inventor 左强纪乾邵威刘丽
Owner ZHEJIANG UNIV CITY COLLEGE
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