Tracked vehicle equipped with electronically controlled integrated pump motor driving system and driving control method
A drive system, pump motor technology, applied in tracked vehicles, transmission control, motor vehicles, etc., can solve problems such as easy safety accidents
Active Publication Date: 2020-02-21
CHANGSHA SUNLIGHT AGRI MACHINERY FACILITIES
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Problems solved by technology
[0004] The main purpose of the present invention is to provide a tracked vehicle equipped with an electronically controlled integrated pump-motor drive system and a drive control method to solve the problem that a tracked vehicle based on an integrated pump-motor drive system is prone to safety accidents in the prior art
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[0051] In order to facilitate the understanding of the present invention, the present invention will be described more fully and in detail below in conjunction with the accompanying drawings and preferred embodiments, but the protection scope of the present invention is not limited to the following specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0052] Unless otherwise defined, all technical terms used hereinafter have the same meanings as commonly understood by those skilled in the art. "First", "second" and similar words used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only for the convenience of distinguishing corresponding components. Likewise, words like "a" or "one" do not indicate a limitation of quantity, but indicate that there is at least on...
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The invention discloses a tracked vehicle equipped with an electronically controlled integrated pump motor driving system and a driving control method. The tracked vehicle includes a vehicle body, anintegrated pump motor and an electronic control system. The integrated pump motor includes a variable pump, a movable swash plate of the variable pump is connected to a piston rod of a hydraulic cylinder, the movable swash plate is further connected to a displacement sensor, the displacement sensor is used to collect the deflection displacement of the movable swash plate, the hydraulic cylinder isconnected with a three-position four-way solenoid valve through a left oil way and a right oil way, and a push rod safety valve is connected between the left oil way and the right oil way. The displacement sensor, the three-position four-way solenoid valve and the push rod safety valve are all connected with the electronic control system, and the electronic control system controls opening and closing of the three-position four-way solenoid valve and the push rod safety valve according to remote terminal control signals and the deflection displacement of the movable swash plate to adjust the output flow of the variable pump. According to the tracked vehicle, safety accidents caused by accuracy control problems, wireless signal delay problems and failure of the electronic control system ofexisting vehicles equipped with integrated pump motors can be avoided.
Description
technical field [0001] The invention relates to the technical field of hydraulic components, in particular to a crawler vehicle equipped with an electronically controlled integrated pump-motor drive system and a drive control method. Background technique [0002] At present, the drive systems of tracked vehicles used in the field of agricultural machinery mainly include mechanical direct drive and integrated pump motor drive. Compared with mechanical direct drive, the integrated pump motor drive system has the advantage of intelligent control. The integrated pump motor is a hydraulic pump that can steplessly adjust the output motor speed by combining a variable hydraulic pump and a fixed displacement motor. The integrated pump motor realizes variable output hydraulic oil by controlling the position of the hydraulic pump swash plate, and then realizes stepless speed change. [0003] At present, the integrated pump motor used in agricultural machinery mainly uses the driver ...
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IPC IPC(8): B62D55/00F16H61/4035F16H61/431F16H61/66G08C17/02
CPCB62D55/00F16H61/4035F16H61/431F16H61/66G08C17/02
Inventor 肖名涛陈文凯周志
Owner CHANGSHA SUNLIGHT AGRI MACHINERY FACILITIES