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Hydraulic system

A hydraulic system and hydraulic cylinder technology, which is applied in the field of segment assembly machines, can solve problems such as low stability and reliability, and complex hydraulic system control

Pending Publication Date: 2020-09-01
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Application Information

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Problems solved by technology

[0004] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a hydraulic system, which solves the technical problems of complex control, low stability and reliability of the hydraulic system controlling multiple degrees of freedom

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] A hydraulic system such as figure 1 As shown, it includes a connected pump source 7 and an execution unit, the execution unit includes a first hydraulic motor 1, a second hydraulic motor 2, a first hydraulic cylinder 3, a second hydraulic cylinder 4, a third hydraulic cylinder 5, a fourth hydraulic cylinder The hydraulic cylinder 6, under the control of the controller, the pump source 7 supplies the first hydraulic motor 1, the second hydraulic motor 2,...

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Abstract

The invention discloses a hydraulic system, and solves the technical problems of complicated control, low stability and low reliability of the hydraulic system of a multi-degree-of-freedom segment erector. The hydraulic system comprises a connected pump source and an execution unit. The execution unit comprises a first hydraulic motor or / and a second hydraulic motor or / and a first hydraulic cylinder or / and a second hydraulic cylinder or / and a third hydraulic cylinder or / and a fourth hydraulic cylinder. Balance valves are arranged between the first hydraulic motor and the pump source, between the second hydraulic motor and the pump source, between the first hydraulic cylinder and the pump source, between the third hydraulic cylinder and the pump source, and between the fourth hydraulic cylinder and the pump source. A hydraulic control one-way valve is arranged between the second hydraulic cylinder and the pump source. The hydraulic system can conveniently realize the control of six degrees of freedom, make the operation of each degree of freedom more stable, realize the smooth start and stop of the first hydraulic motor, avoid sudden stop and suction, and realize the interlocking function between the action of grasping the hydraulic cylinder and other executive parts.

Description

technical field [0001] The invention belongs to the technical field of segment assembly machines, in particular to a hydraulic system. Background technique [0002] With the continuous development of economy and technology and the acceleration of urbanization, the demand for the construction of small-diameter tunnels such as water pipes, sewage pipes, gas pipes, heat pipes, power cable pipes, and communication cable pipes in cities is increasing. However, due to the small diameter of this type of tunnel, small turning radius, small internal space, and high requirements for segment assembly accuracy, a rocker-arm segment assembly machine is required to be suitable for segment assembly of small-diameter shield machines. However, the rocker arm segment assembly machine has compact space, many degrees of freedom, complex control, and requires simple control and high reliability. The existing hydraulic system cannot meet the control requirements. [0003] Therefore, the art need...

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Application Information

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IPC IPC(8): F15B11/08F15B13/02F15B19/00F16D65/14F16D121/04F16D127/06
CPCF15B11/08F15B13/02F15B13/027F15B19/00F16D65/14F16D2121/04F16D2127/06
Inventor 朱雷李光李东辉胡燕伟周小磊杜旭峰庞文卓罗恒星李太运许顺海詹晨菲于刘帅李孝瑾
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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