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A compact double-rod hydraulic cylinder

A compact, hydraulic cylinder technology, applied in the field of hydraulic cylinders, can solve the problems of use in places with limited space, long cylinder length, inconvenient use and installation, etc., to reduce volume, reduce cylinder length, and facilitate installation and use. Effect

Active Publication Date: 2020-01-07
SICHUAN CHANGJIANG HYDRAULIC TIANCHENG MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems that the existing double-head hydraulic cylinder with double hydraulic rods is too long, inconvenient to use and install, and not conducive to use in places with limited space. The present invention provides a compact double-rod hydraulic cylinder

Method used

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  • A compact double-rod hydraulic cylinder
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  • A compact double-rod hydraulic cylinder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A compact double-rod hydraulic cylinder, comprising an outer cylinder 7, an inner cylinder 2 is arranged inside the outer cylinder 7, a hollow hydraulic rod 8 is sleeved on the outer wall of the inner cylinder 2, the left end of the hollow hydraulic rod 8 protrudes from the outer cylinder 7, and the hollow hydraulic rod 8. The right end is connected with an annular piston 10 that is in contact with the outer wall of the inner cylinder 2 and the inner wall of the outer cylinder 7. The left and right sides of the annular piston 10 are respectively the outer oil return chamber 9 and the outer oil inlet chamber 11. The inner cylinder 2 is provided with a piston 4 The hydraulic rod 6, the left and right sides of the piston 4 are respectively the inner oil inlet chamber 3 and the inner oil return chamber 16, the right end of the hydraulic rod 6 extends out of the outer cylinder 7, and the inner cylinder 2 is provided with an oil inlet connected to the inner oil inlet chamber 3 ...

Embodiment 2

[0029] This embodiment improves on the basis of Embodiment 1:

[0030] The oil inlet hole 17 and the oil return hole 19 are respectively provided with a pipeline switching mechanism a18 and a pipeline switching mechanism b20.

[0031] The advantages of the above improvements are: the pipeline switching mechanism a and the pipeline switching mechanism b can realize the switching of the oil inlet and oil return of the oil inlet pipe and the oil return pipe, and realize that the hollow hydraulic rod and the hydraulic rod can perform telescopic work independently, while still being able to Simultaneous expansion and contraction, so that the device can meet different usage requirements.

Embodiment 3

[0033] This embodiment improves on the basis of Embodiment 2:

[0034] The pipeline switching mechanism a18 includes a cylinder a18.2 whose rod body traverses through the oil inlet pipe 12 and corresponds to the oil inlet hole 17. The diameter of the rod body of the cylinder a18.2 is the same as the inner diameter of the oil inlet pipe 12. 12 The pipeline is connected to the matched oil inlet 18.1, and the end of the rod body of the cylinder a18.2 is provided with a semi-cylindrical notch a18.3 on the outer side of the outer cylinder 7.

[0035] Working principle: Working principle: When the hollow hydraulic rod 8 needs to be extended, the rod body of the cylinder a18.2 extends to the gap a corresponding to the pipeline of the oil inlet pipe 12. At this time, the rod body of the cylinder a18.2 on the back of the gap a18.3 is blocked The oil inlet pipe 12 pipeline before the oil inlet channel 5 opens the oil inlet hole 17 at the same time, and the hydraulic medium oil enters th...

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Abstract

The invention discloses a compact type double-pole hydraulic cylinder, and relates to the technical field of hydraulic cylinders. The compact type double-pole hydraulic cylinder solves the problem that existing double-head hydraulic cylinder blocks of double hydraulic rods are too large in length, use and installation are inconvenient, and meanwhile, the hydraulic cylinder blocks cannot be conveniently used at the place with limited space; and the hydraulic cylinder comprises an outer cylinder, an inner cylinder is arranged inside the outer cylinder, the outer wall of the inner cylinder is sleeved with a hollow hydraulic rod, the right end of the hollow hydraulic rod is connected with an annular piston in contact fit with the outer wall of the inner cylinder and the inner wall of the outercylinder, the left and right sides of the annular piston are provided with outer oil return cavity and an outer oil inlet cavity, the inner cylinder is internally provided with a hydraulic rod with apiston, the left and right sides of piston are provided with an inner oil inlet cavity and an inner oil return cavity, an oil inlet channel communicating with the inner oil inlet cavity is arranged in an inner cylinder block, an oil return channel communicating with the outer oil return cavity is arranged in an outer cylinder block, the outer cylinder is provided with an oil inlet pipe communicating with the oil inlet channel and an oil return pipe communicating with the inner oil return cavity, the pipe wall of the oil inlet pipe is provided with an oil inlet hole communicating with the outer oil inlet cavity, and the pipe wall of the oil return pipe is provided with an oil return hole communicating with the oil return channel.

Description

technical field [0001] The invention relates to the technical field of hydraulic cylinders, in particular to a compact double-rod hydraulic cylinder. Background technique [0002] The hydraulic cylinder is the actuator in the hydraulic transmission system. It is an energy conversion device that converts hydraulic energy into mechanical energy, and realizes the reciprocating motion of the hydraulic rod. There are three types of hydraulic cylinders: piston cylinder, plunger cylinder, and swing cylinder. The piston cylinder and plunger cylinder realize reciprocating linear motion, output speed and thrust, and the swing cylinder realizes reciprocating swing, outputting angular velocity (speed) and torque. In addition to being used individually, hydraulic cylinders can also be used in combination of two or more or with other mechanisms to complete special functions. The hydraulic cylinder is simple in structure and reliable in operation, and has been widely used in the hydraulic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B15/14
CPCF15B15/1404F15B15/1428F15B15/149
Inventor 郑建赵泽兵
Owner SICHUAN CHANGJIANG HYDRAULIC TIANCHENG MACHINERY
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