Multiway valve tail connector, multiway valve and hydraulic system
A multi-way valve and tail-coupling technology, which is applied to fluid pressure actuating devices, servo motor components, mechanical equipment, etc., can solve the problem of low utilization of load-sensitive multi-way valve tail-couplings
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no. 1 example
[0056] figure 1 It is a working principle diagram of the multi-way valve tail coupling in the first embodiment of the present invention.
[0057] like figure 1 As shown, the multi-way valve tail coupling in this embodiment includes a first oil return port 1 and a second oil return port 2 , a built-in load feedback oil port 42 , a pilot oil return inlet 52 and a working oil return port 12 . The first oil return port 1, the second oil return port 2 and the working oil return port 12 communicate with each other through the oil return passage A arranged inside the multi-way valve tail coupling. The built-in load feedback oil port 42 communicates with the return oil passage A through the built-in load feedback oil passage B. The pilot oil return inlet 52 communicates with the oil return passage A through the pilot oil return passage C.
[0058] The working process of the multi-way valve tail is described as follows: the oil in the oil return port 12 of the working oil circuit pa...
no. 2 example
[0064] figure 2 It is a working principle diagram of the multi-way valve tail coupling according to the second embodiment of the present invention.
[0065] like figure 2 As shown, the multi-way valve tail of the second embodiment is combined with figure 1 Compared with the multi-way valve tail coupling of the first embodiment shown, one more working oil inlet 31, one built-in oil inlet 32 and an external oil source inlet D are provided, and the working oil inlet 31 and the built-in oil inlet port 32 are communicated through an external oil source oil inlet oil passage D arranged inside the tail coupling of the multi-way valve.
[0066] Due to the additional arrangement of an oil inlet 31 of the working oil circuit, an oil inlet oil passage D of an external oil source, and a built-in oil inlet 32, the multi-way valve tail coupling can be communicated with the pressure oil of the multi-way valve with it, so that it can be Realize the function of supplying external oil to...
no. 3 example
[0069] image 3 It is a working principle diagram of the tail coupling of the multi-way valve according to the third embodiment of the present invention.
[0070] like image 3 As shown, the multi-way valve tail of the third embodiment is combined with figure 1 Compared with the multi-way valve tail coupling of the first embodiment shown, an external load feedback oil port 41 is provided, and a load feedback communication oil passage E is set to connect the built-in load feedback oil port 42 and the external load feedback oil port 41. They are connected, and the connection between the built-in load feedback oil port 42 and the oil return oil passage A and the first oil return port 1 and the second oil return port 2 is cut off. The built-in load feedback oil port 42 can sense external pressure through the external load feedback oil port 41 . For example, the external load feedback oil port 41 can be used to connect an accessory valve block, so that the built-in load feedback...
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