Hydraulic flow control valves, hydraulic control system, and engineering machinery
A flow control valve and hydraulic technology, which is applied in mechanical equipment, fluid pressure actuators, servo motors, etc., can solve problems such as single function and complex structure, and achieve the effect of saving energy and realizing flow reuse
Pending Publication Date: 2020-10-02
SUOTE TRANSMISSION EQUIP
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Problems solved by technology
This kind of structure is complicated and the function is relatively simple, and it can only realize one-to-one oil supply mode of oil cylinder; it has certain limitations for machinery with limited installation space
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[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.
[0026] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art wi...
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The embodiment of the invention provides a hydraulic flow control valve, a hydraulic control system and engineering machinery, and relates to the field of engineering machinery. The hydraulic flow control valve comprises a valve body, a main valve core, a poppet valve core, a return spring and a plug. The valve body is provided with a first connection end and a second connection end, wherein the first connection end is used for connection with a first oil channel, and the second connection end is used for connection with a second oil channel. The main valve core is arranged in the valve body and is provided with an inner oil channel. The inner oil channel comprises a first channel and a second channel which communicate with each other. The poppet valve core is slidably arranged in the second channel. The reset spring abuts between the poppet valve core and the plug and is used for enabling the poppet valve core to abut against the end surface, close to the first channel, of the secondchannel. The poppet valve core is used for enabling hydraulic oil to flow into the first oil channel from the second oil channel without flowing in reverse directions. According to the embodiment of the hydraulic flow control valve, the hydraulic control system and the engineering machinery, mutual oil supply between oil cylinders can be achieved, and energy is saved; and space is saved.
Description
technical field [0001] The invention relates to the field of construction machinery, in particular to a hydraulic flow control valve, a hydraulic control system and construction machinery. Background technique [0002] Existing construction machinery including a hydraulic control system, when multiple oil cylinders operate at the same time, that is, when compound operations are performed, it can only realize the oil supply of the oil cylinder to itself, and cannot realize the oil supply of multiple oil cylinders at the same time; or, The connection of the two oil cylinders is realized by connecting an external connecting pipe or an external valve block on the main valve, so as to realize the one-to-one oil supply of the two oil cylinders. This kind of structure is complicated and the function is relatively simple, and only one-to-one oil cylinder oil supply can be realized; it has certain limitations for machines with limited installation space. Contents of the invention ...
Claims
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IPC IPC(8): F15B13/02F15B15/14F15B11/08
CPCF15B11/08F15B13/02F15B15/1423F15B15/1428
Inventor 松本哲于晓晨朱彪杨密密郑诗强
Owner SUOTE TRANSMISSION EQUIP