Asymmetrical bidirectional hydraulic balance locking system
A two-way hydraulic, asymmetric technology, applied in the direction of fluid pressure actuation device, multi-way valve, engine components, etc., can solve the problems of difficult to ensure the accuracy and stability of system control, large throttling loss, etc., to achieve high energy utilization Efficiency, small pressure loss, smooth operation and locking effect
Pending Publication Date: 2019-01-25
杭州诺祥科技有限公司
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Problems solved by technology
When it is necessary to precisely control the position or speed of the hydraulic system under the condition of exceeding the load, the performance requirements of the balance valve are very high, and it is difficult to ensure the accuracy and stability of the system control in many cases
And once the back pressure is increased in the system, even when there is no excess load, there will still be throttling, and the resulting throttling loss will be relatively large
Method used
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[0022] The above and other technical features and advantages of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them.
[0023] Such as figure 1 Shown is a schematic diagram of the structure of the slide valve spool type balanced locking valve, which is mainly composed of a valve body 1, a valve sleeve 2, a spool 3, a ball spool 12 and a compression spring 14; the valve body 1 is provided with a valve hole 13 , the ball valve core 12 is pressed on the valve seat by the compression spring 14, and together with the valve hole 13 forms a one-way valve at the upper end of the valve body 1, and the opening diameter of the one-way valve seat is the same as that of the bottom piston 5; the valve body 1 The top is provided with the top oil port 19, and the bottom is provided with the bottom oil port 8; the valve ...
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The invention discloses an asymmetric bidirectional hydraulic balance locking system comprising a slide valve element type balance locking valve and an oil cylinder. The slide valve type balance locking valve is composed of a valve body, a valve sleeve, a valve element and oil ducts. The slide valve element type balance locking valve is used in pairs and divided into a left slide valve balance valve and a right slide valve balance valve with the same structure and different internal dimensions but symmetrical to each other. A top port of the left balance valve is communicated with a rodless cavity of the oil cylinder, and a top port of the right balance valve is communicated with a rod cavity of the oil cylinder. Bottom ports of the left and right balance valves are connected to a system pressure port. An upper oil duct of the left balance valve is communicated to a lower oil duct of the right balance valve, and a lower oil duct of the left balance valve is communicated with an upper oil duct of the right balance valve. Middle oil ducts of the left and right balance valves are communicated with an oil tank. The balance valves and the balance system have the advantages of simple structure, low cost and good reliability, are not sensitive to oil temperature and cleanliness, and can effectively ensure the balance and the system safety of an asymmetric double-acting hydraulic system.
Description
technical field [0001] The invention belongs to the technical field of hydraulic control components and systems, and in particular relates to an asymmetric two-way hydraulic balance locking system. Background technique [0002] Hydraulic technology is a transmission and control technology that is widely used in modern industrial technology. It has many advantages such as high power density and fast system response. In practical applications, the system often has a so-called "overrunning load", that is, the force of the load drives the movement of the hydraulic cylinder (or motor). For example, in the process of lifting the heavy object upwards by the oil cylinder, the oil cylinder moves upward against the load gravity under the action of oil pressure, and the direction of the load is opposite to the movement direction of the oil cylinder. This is a normal load, and the general system can run smoothly. But when the oil cylinder falls from a high place under the action of loa...
Claims
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IPC IPC(8): F15B13/01F15B13/04F16K11/065
CPCF15B13/01F15B13/0402F16K11/065
Inventor 王林翔魏双丰
Owner 杭州诺祥科技有限公司