Forklift tilt valve structure, multi-way valve and forklift
A technology for tilting valves and forklifts, which is applied in the direction of servo motor components, lifting devices, mechanical equipment, etc. It can solve the problems of high processing and assembly accuracy, achieve low assembly accuracy requirements, ensure safety performance, and ensure processing accuracy.
Active Publication Date: 2020-03-31
BYD CO LTD
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is to provide a forklift tilting valve structure, a multi-way valve and a
Method used
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[0042] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0043] Such as Figure 1 to Figure 3As shown, the forklift tilting valve structure 1 provided by an embodiment of the present invention includes a tilting valve body 11, a tilting valve stem 12, a tilting valve stem bushing 13, a main valve core spring 14 and a bushing spring 15. The tilting valve body 11 There are spool installation holes 111, forward-inclined oil inlet passages 112, forward-inclined oil return passages 113, oil return passages 114 and main oil passages 115, and the inclined valve rod 12 is slidably arranged in the valve core installation holes 111. , ...
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The invention belongs to the technical field of forklifts, and relates to a forklift inclined valve structure, a multiway valve and a forklift. The forklift inclined valve structure comprises an inclined valve body, an inclined valve rod, an inclined valve rod shaft sleeve, a main valve element spring and a shaft sleeve spring; a valve element mounting hole, a front tilting inlet oil way, a fronttilting back oil way, an oil return way and a main oil way are arranged in the inclined valve body; the inclined valve rod is slidingly arranged in the valve element mounting hole; an inner ring of the inclined valve rod shaft sleeve is slidingly contacted with an outer ring of the inclined valve rod; an outer ring of the inclined valve rod shaft sleeve is slidingly contacted with the inner wall of the valve element mounting hole; a through oil way is formed in the inclined valve rod; and the inclined valve rod shaft sleeve is provided with a first high-pressure oil inlet hole, a second high-pressure oil inlet hole and an oil return hole communicating with the through oil way. The forklift inclined valve structure is lower in assembly precision requirement.
Description
technical field [0001] The invention belongs to the technical field of forklifts, and in particular relates to a forklift tilt valve structure, a multi-way valve and a forklift. Background technique [0002] For the forward tilt of the mast on the forklift, it is required to have the forward tilt self-locking function, that is, after the forklift is powered off, when the forward tilt joystick is operated, the mast is required not to tilt forward, otherwise accidents may occur. At present, this function is mainly realized by installing a self-locking spool in the inclined valve stem of the hydraulic reversing multi-way valve. [0003] The main working principle of the conventional multi-way valve is as follows: When the forklift is powered off, the oil pump does not work, and there is no high-pressure oil in the main oil passage. At this time, the inclined valve stem is pushed to move to the left, and the main oil passage communicates with the small oil inlet hole. When ther...
Claims
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IPC IPC(8): F15B13/04B66F9/22
CPCB66F9/22F15B13/022F15B13/0402
Inventor 牟军伟
Owner BYD CO LTD