Multistage variable-pressure oil cylinder and control method thereof

A control method and variable pressure oil technology, applied in the field of hydraulic cylinders, can solve problems such as the inability to meet the requirements of multi-stage pressure control, and achieve the effects of stable modulation and simple control methods

Active Publication Date: 2017-08-01
FOSHAN HENGLITAI MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are: step-down pressure and boost pressure, each with only one level of pressure level, which cannot meet the control requirements of multi-level pressure

Method used

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  • Multistage variable-pressure oil cylinder and control method thereof
  • Multistage variable-pressure oil cylinder and control method thereof

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Embodiment Construction

[0027] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0028] Such as figure 1 As shown, a multi-stage variable pressure oil cylinder includes a first-stage cylinder body 1, a first-stage piston rod 2 and a protective cover tube 3;

[0029] The first-stage cylinder 1 is installed with the first-stage piston rod 2 that can be pushed out or recovered, the protective cover tube 3 is arranged at one end of the first-stage cylinder 1, and the first-stage piston rod 2 The rod end protrudes from the primary cylinder 1 and is located in the protective cavity 31 of the protective cover tube 3. The inner oil chamber of the primary cylinder 1 is divided into the first oil chamber by the primary piston rod 2. A cavity 11 and a second oil cavity 12, the cross-sectional area of ​​the first oil cavity 11 is larger than that of the second oil cavity 12;

[0030] The...

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Abstract

The invention discloses a multistage variable-pressure oil cylinder and a control method thereof. The variable-pressure cylinder comprises a first-stage cylinder block, a first-stage piston rod and a protective barrel. The first-stage piston rod capable of being pushed out or recovered is mounted in the first-stage cylinder block. An inner oil cavity of the first-stage cylinder block is partitioned into a first oil cavity body and a second oil cavity body through the first-stage piston rod. A first oil channel communicating with the first oil cavity body and a second oil channel communicating with the second oil cavity body are formed in the first-stage cylinder block. An oil cavity is formed in the first-stage piston rod and provided with a second-stage piston rod capable of moving relatively. The oil cavity is partitioned into a third oil cavity body and a fourth oil cavity body through the second-stage piston rod. According to the multistage variable-pressure oil cylinder provided by the invention, multistage boosted pressure and multistage reduced pressure can be output through modification for the first-stage piston rod; and in addition, the control method of the multistage variable-pressure oil cylinder is further provided, control is easy, and the stability and controllability are high.

Description

technical field [0001] The invention relates to the technical field of hydraulic cylinders, in particular to a multi-stage variable pressure oil cylinder and a control method thereof. Background technique [0002] Currently known variable pressure cylinder structure see figure 2 , mainly composed of cylinder 1 and piston rod 2. The piston rod 2 separates the oil cylinder into a first oil chamber 11 and a second oil chamber 12, and the cross-sectional area of ​​the first oil chamber is larger than that of the first oil chamber. The first oil passage and the second oil passage communicate with the first oil chamber or the second oil chamber respectively. According to Newton's first law P 第一油腔 *S 第一油腔 =P 第二油腔 *S 第二油腔 , get: when the first oil chamber enters pressure oil, the second oil chamber outputs pressurized pressure oil through the second oil passage; when the second oil chamber enters pressure oil, the first oil chamber passes through the first oil passage Output ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/14F15B15/20
CPCF15B15/14F15B15/1423F15B2215/30
Inventor 温怡彰邓耀顺周性聪苏龙保霍志恒
Owner FOSHAN HENGLITAI MACHINERY
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