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Hydraulic oil cylinder, hydraulic system and engineering machinery

A hydraulic cylinder and oil port technology, applied in the hydraulic field, can solve the problems of inconvenient adjustment of buffer pressure and limited buffer performance of the oil cylinder, etc.

Active Publication Date: 2017-04-26
LOUDI ZHONGXING HYDRAULIC COMPONENTS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the cushioning performance of the above-mentioned hydraulic cylinder is completely determined by the structure, and its cushioning pressure is inconvenient to adjust, and the cushioning performance of the oil cylinder is limited.

Method used

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  • Hydraulic oil cylinder, hydraulic system and engineering machinery
  • Hydraulic oil cylinder, hydraulic system and engineering machinery
  • Hydraulic oil cylinder, hydraulic system and engineering machinery

Examples

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Embodiment Construction

[0030] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0031] It should be noted that the first, second, third, and fourth mentioned in this article are only used to distinguish different parts with the same or similar features, and are not used as limitations on the parts themselves, and there is no difference between the parts. Sequence or dependency.

[0032] On the one hand, please refer to Figure 1-5 , a hydraulic cylinder proposed by the present invention, including a cylinder 10, a piston 20 arranged in the cylinder 10, a piston rod 30 connected to the piston 20, the piston 20 divides the cylinder 10 into a rod chamber 40 and a rodless chamber 50 , the rod chamber 40 communicates with the rod chamber oil port 11, and the rodless chamber 50 ...

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Abstract

The invention proposes a hydraulic oil cylinder, a hydraulic system and engineering machinery. The hydraulic oil cylinder comprises a cylinder barrel, a piston and a piston; the piston divides the cylinder barrel into a rod cavity and a rodless cavity; the rod cavity is communicated with an oil port of the rod cavity; the rodless cavity is communicated with an oil port of the rodless cavity; meanwhile, the piston or the piston rod is axially and movably provided with a first movable buffer sleeve; a first overflow valve is connected between the rodless cavity and the oil port of the rodless cavity, and is used for opening after the pressure of the rodless cavity reaches preset pressure; and / or, the piston or the piston rod is axially and movably provided with a second movable buffer sleeve; and a second overflow valve is connected between the rod cavity and the oil port of the rod cavity, and is used for opening after the pressure of the rod cavity reaches preset pressure. The hydraulic oil cylinder is stable in buffer pressure at the final travel thereof, can adjust the buffer pressure through adjusting the opening pressure of the first overflow valve and / or the second overflow valve, and is convenient to adjust and excellent in buffer effect.

Description

technical field [0001] The invention relates to the field of hydraulic technology, and more specifically, to a hydraulic oil cylinder, a hydraulic system and engineering machinery. Background technique [0002] Hydraulic cylinders, also known as oil cylinders and hydraulic cylinders, are the executive components of the hydraulic system and are used to drive various working mechanisms. During the working process, the piston needs to reciprocate continuously. When the piston rod) extends to the limit position, the end face of the piston will A large impact on the end cover of the oil cylinder may cause damage to the hydraulic cylinder. Therefore, it is necessary to install a buffer device at this part to avoid damage to the hydraulic cylinder by the above-mentioned impact. For fast-moving hydraulic cylinders, their cushioning performance greatly affects the shock, vibration and life of related components of the hydraulic system. [0003] At present, the common principle of hy...

Claims

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Application Information

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IPC IPC(8): F15B15/14F15B15/22
CPCF15B15/1423F15B15/226F15B2215/30
Inventor 邹波邵威杨司空
Owner LOUDI ZHONGXING HYDRAULIC COMPONENTS CO LTD
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