A hydraulic parking and emergency trailer control device and wheeled engineering vehicle
A control device and engineering vehicle technology, applied in the direction of brake transmission, vehicle components, brakes, etc., can solve problems such as the inability to release the vehicle when parking, improve parking control performance, improve intelligence, and avoid abnormal wear and tear. Effect
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[0020] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0021] A hydraulic parking and emergency trailer control device, comprising a DC motor pump 14, a first two-two three-way reversing valve 3, a second two-two three-way reversing valve 13, a shuttle valve 9 and a first two-two two-way reversing valve The hydraulic oil can pass through the DC motor pump 14, the second two-position three-way reversing valve 13, the shuttle valve 9 and the first two-two-way reversing valve 4 in sequence, and then from the first two-two-way reversing valve 4 port 2 output, such as figure 1 and figure 2 shown.
[0022] In this embodiment, the oil port 1 of the first two-two three-way reversing valve 3 communicates with the oil port 1 of the shuttle valve 9, and t...
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