Multi-stage central sleeve hydraulic cylinder structure capable of extending and retracting stage by stage

A hydraulic cylinder and bushing technology, which is applied in the field of hydraulic cylinders, can solve problems such as out-of-order pistons, achieve load balance and avoid damage

Pending Publication Date: 2021-05-07
韶关液压件厂有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a multi-stage central sleeve hydraulic cylinder structure that can be extended and retracted step by step, and the intermediate cylinders and piston rods of each stage can be extended or retracted step by step , which solves the problem of out-of-order pistons at all levels in the process of extending or retracting the multi-stage piston hydraulic pressure in the prior art

Method used

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  • Multi-stage central sleeve hydraulic cylinder structure capable of extending and retracting stage by stage
  • Multi-stage central sleeve hydraulic cylinder structure capable of extending and retracting stage by stage
  • Multi-stage central sleeve hydraulic cylinder structure capable of extending and retracting stage by stage

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Embodiment Construction

[0027] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0028] It is worth noting that the orientation words such as "up" and "down" involved in this article are all determined relative to the perspective of the drawings, and are only for the convenience of description, and cannot be understood as limitations on the technical solution.

[0029] A multi-stage central sleeve hydraulic cylinder structure that can be extended and retracted step by step, including a cylinder body 1, a multi-stage intermediate cylinder and a piston rod 5, wherein the previous intermediate cylinder in the multi-stage intermediate cylinder Set outside the last intermediate cylinder of the multi-stage intermediate cylinders, the cylinder 1 is set outside the first intermediate cylinder of the multi-stage intermediate cylinders, and the last intermediate cylinder of the multi-stage intermediate cylinders is sleeved located outside t...

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Abstract

The invention relates to a multi-stage central sleeve hydraulic cylinder structure capable of extending and retracting stage by stage. The structure comprises a cylinder block, multi-stage middle cylinder barrels and a piston rod, wherein the front middle cylinder barrel of the multi-stage middle cylinder barrels sleeves the rear middle cylinder barrel of the multi-stage middle cylinder barrels, the cylinder block sleeves the first-stage middle cylinder barrel in the multi-stage middle cylinder barrels, and the last-stage middle cylinder barrel in the multi-stage middle cylinder barrels sleeves the piston rod; and a cylinder block sleeve penetrating through the first-stage middle cylinder barrel is arranged in the cylinder block, each stage of middle cylinder barrel is provided with a cylinder barrel sleeve, the cylinder block sleeve is provided with a first oil guide hole, the cylinder barrel sleeve is provided with a second oil guide hole, and the bottom of each stage of middle cylinder barrel is provided with a communicating oil way matched with the first oil guide hole and the second oil guide hole. According to the structure, all stages of middle cylinder barrels and the piston rod can extend or retract stage by stage, and the problem that all stages of pistons are disordered in the extending or retracting process of multi-stage piston hydraulic pressure in the prior art is solved.

Description

technical field [0001] The invention relates to the technical field of hydraulic cylinders, and more specifically relates to a multi-stage center sleeve hydraulic cylinder structure that can be extended and retracted step by step. Background technique [0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swing motion). Hydraulic cylinders are actuators in some machinery, mainly providing push and pull force. In some machinery, long-stroke hydraulic cylinders are required, but the installation space is limited, which requires the use of multi-stage hydraulic cylinders. At present, the order in which the stages of multi-stage hydraulic cylinders extend depends on the force applied to the pistons of each stage. The stage with the largest resultant force moves first. Since the flow rate of the oil source is constant, the volume of each stage is different, which will lead to the mov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/16F15B15/20
CPCF15B15/1423F15B15/1428F15B15/149F15B15/16F15B15/20
Inventor 彭晓翔张小勇潘豪杨力张济民
Owner 韶关液压件厂有限公司
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