Central hydraulic pump and its pressure regulating valve
A technology of pressure regulating reversing valve and valve core, applied in the field of hydraulic pump, can solve the problem of inability to adjust the flow direction of hydraulic oil in the hydraulic oil circuit, etc.
Inactive Publication Date: 2016-09-14
东莞光洋信息科技有限公司
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Problems solved by technology
[0003] In traditional hydraulic pumps, the amount of hydraulic oil on the hydraulic oil circuit and the flow direction of hydraulic oil cannot be adjusted according to the actual situation
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[0043] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific implementations disclosed below.
[0044] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected ...
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Each pressure-regulating reversing valve comprises a motor, a valve element and a valve sleeve shell. When pressurization is needed, the motors drive the valve elements to rotate, first passages are in butt joint with high-pressure input pipe openings, second passages are in butt joint with high-pressure output pipe openings, and accordingly hydraulic oil enters hydraulic parts from a high-pressure oil tank. Pressure reduction feedback pipe openings are closed through positioning ejection cores and are in a shutdown state. When pressure reduction is needed, the motors drive the valve elements to rotate, the second passages are in butt joint with the high-pressure output pipe openings, the first passages are in butt joint with the pressure reduction feedback pipe openings, and the hydraulic oil is sucked into a low-pressure oil tank from the hydraulic parts and then pressurized into the high-pressure oil tank again to be redistributed under the action of the low-pressure oil tank. The positioning ejection cores are located in travel clamping grooves, and the high-pressure input pipe openings are closed through outer sidewalls of the valve elements. When berthing and stopping are needed, the motors can rotate the valve elements so that the high-pressure input pipe openings, the high-pressure output pipe openings and the pressure reduction feedback pipe openings are all in the closed state. The quantity and the flow direction of the hydraulic oil on a hydraulic oil path can be adjusted according to practical situations. Meanwhile, a central hydraulic pump is provided.
Description
technical field [0001] The invention relates to the technical field of hydraulic pumps, in particular to a central hydraulic pump and a pressure regulating reversing valve thereof. Background technique [0002] The hydraulic pump is the power component of the hydraulic system. It is driven by the driving mechanism, sucks the oil from the hydraulic oil tank, forms the pressure oil and discharges it, and sends it to the actuator (such as a hydraulic device). [0003] In traditional hydraulic pumps, it is impossible to adjust the amount of hydraulic oil on the hydraulic oil circuit and the flow direction of hydraulic oil according to the actual situation. Contents of the invention [0004] Based on this, it is necessary to address the above problems and provide a central hydraulic pump and its pressure regulating reversing valve that can adjust the amount of hydraulic oil and the flow direction of the hydraulic oil according to actual conditions. [0005] A pressure regulati...
Claims
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IPC IPC(8): F15B13/02F16K31/04
CPCF15B13/02
Inventor 刘伟民陈海忠
Owner 东莞光洋信息科技有限公司