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Load control balance valve and load control hydraulic system

A technology of load control and balance valve, which is applied in the field of balance valve, can solve the problems of unstable operation of equipment, instability and instability of balance valve 2, and achieve good self-adaptive adjustment performance, good start-up performance and strong stability

Active Publication Date: 2013-11-20
CHANGDE ZHONGLIAN ZHONGKE HYDRAULIC +1
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

The instability of this flow will lead to an unstable state of the balance valve 2, which will eventually lead to unstable operation of the equipment

Method used

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  • Load control balance valve and load control hydraulic system
  • Load control balance valve and load control hydraulic system
  • Load control balance valve and load control hydraulic system

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Embodiment Construction

[0058] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, but not to limit the present invention.

[0059] In the present invention, unless otherwise stated, the directional words used such as "upper, lower, top, bottom" are usually for the direction shown in the drawings or for the vertical, vertical or gravity direction The words used to describe the mutual positional relationship of the components mentioned above.

[0060] like figure 2 and Figure 4 As shown, the present invention provides a load control balance valve, the load control balance valve 13 includes a hydraulic control chamber Pil and a control port Px, a pilot control oil circuit X1 is connected between the control port Px and the hydraulic control chamber Pil, the pilot A temperature compensating ...

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Abstract

The invention discloses a load control balance valve and a load control hydraulic system. The load control balance valve (13) comprises a hydraulic control cavity (Pil) and a control port (Px). A pilot control oil circuit (X1) is connected between the control port and the hydraulic control cavity. A temperature compensation speed control valve (17) is arranged on the pilot control oil way so as to enable pilot control oil liquid flowing into the hydraulic control cavity to keep the flow stable in the working condition that the temperature of the oil liquid changes. The load control balance valve is good in process micro control performance, high in stability and capable of still keeping the flow stable under the working condition that the temperature of the oil liquid changes, and has the good self-adaptation adjusting performance of the temperature of the oil liquid. Due to the additional arrangement of the speed control valve, the balance valve can have better starting performance and be rapid in starting response and short in starting time. According to the load hydraulic control system with the load control balance valve, the load hydraulic control system is arranged on the working oil circuit of the load hydraulic control system, and the system is stable in operation, safe and reliable.

Description

technical field [0001] The present invention relates to a balance valve, in particular, to a load control balance valve and a load control hydraulic system having the load control balance valve. Background technique [0002] In the boom extension and retraction system of the concrete pump truck, the balance valve is usually used for hydraulic locking to ensure that the boom can reliably stay at any position. Among them, the balance valve is the key hydraulic component of the load control system and the hydraulic bearing system, and the performance of the balance valve directly affects the operation quality of the main engine. With the increasing difficulty of concrete pump truck operation, the requirements for sealing, self-locking, stability and multi-functionality of the balance valve are getting higher and higher, and the power density of the balance valve itself is also increasing. With the continuous refresh of the working height, the working pressure of the boom syste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/02
Inventor 苏洪昌徐尧
Owner CHANGDE ZHONGLIAN ZHONGKE HYDRAULIC
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