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Fluid driving device

A fluid-driven, cylinder technology, applied in the direction of fluid pressure actuation devices, etc., can solve the problems of piston device lag and inability to start the piston device, and achieve the effects of reducing friction, solving hysteresis, and increasing thrust

Pending Publication Date: 2021-08-24
BEIJING SOFT ROBOT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to balance various friction losses and internal energy losses in the piston device, a certain amount of starting energy is required when starting, that is, a ΔP 启动 , if ΔP 启动 If the value is too small, the piston device cannot be activated, that is to say, the existing piston device still has a certain hysteresis

Method used

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Embodiment Construction

[0030] In the following detailed description, many of the specific details of the present application are illustrated in order to provide a thorough understanding of the relevant disclosure. However, the present application can be implemented without these details in terms of one of ordinary skill in the art. It should be understood that "systems", "devices", "unit", and / or "module" are used in this application are one of different components, elements, part or components of different levels in order arrangements. method. However, if other expressions can be achieved, these terms can be replaced by other expressions.

[0031] It should be understood that when the device, unit or module is called "on ...", "connected" or "coupled to" another device, unit or module, it can be directly in another device, unit or module Upon connectivity or coupled to or communicate with other devices, units or modules, or may exist in intermediate devices, units, or modules, unless the context expl...

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Abstract

The invention provides a fluid driving device which comprises a cylinder body, a flexible body and a flexible body sealing end cap, wherein the cylinder body is provided with a cavity; the flexible body is arranged in the cavity; the flexible body sealing end cap is arranged in the cavity and is fixedly connected with one end of the flexible body; and a gap exists between the flexible body sealing end cap and the cylinder body. By using the flexible body and matching with other parts as ways of fluid driving position devices, surface tension of the flexible body and a thrust force generated by inner and outer pressure difference of the flexible body are overlapped, so that a thrust of a push rod is increased greatly. In addition, as the gap exists between the flexible body sealing end cap and the cylinder body, friction generated by movement of the push rod is reduced, so that the loss of the thrust of the push rod is further avoided. Therefore, the driving device is free of starting energy when being started, so that the hysteretic nature in the background art is solved.

Description

Technical field [0001] The present application relates to the field of piston technology, and more particularly to a fluid drive. Background [0002] Piston is a device that converts fluid pressure conversion and displacement, which can well meet the application needs of a variety of scenes. However, in the conventional piston system, in order to ensure its good sealing performance, the piston will slide in the case of close contact with the inner wall of the cylinder, thereby generates a more severe friction loss, and the risk of sealing failure will also be brought . [0003] In addition, the piston device, such as a cylinder, which is in an ideal state. 推力 = ΔP × S 缸径 , Where f 推力 It is the ideal thrust of the cylinder; ΔP is the relative pressure difference between the cylinder inside and the outside environment; 缸径 For the inner diameter of the cylinder, approximately equal to the diameter of the piston. It can be seen that the thrust of the cylinder is ΔP and s 缸径 The impac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/14F15B15/10F15B15/20
CPCF15B15/10F15B15/14F15B15/1423F15B15/1447F15B15/20
Inventor 张凌峰鲍磊邵逸凡李秋实牟行浩赵元瑞
Owner BEIJING SOFT ROBOT TECH CO LTD