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[CN 201810379637.4] Four-stage hydro-mechanical stepless transmission device for tracked vehicles
[CN 201810379637.4] A four-stage hydraulic-mechanical stepless transmission device for tracked vehicles Title: A four-stage hydraulic-mechanical stepless transmission device for tracked vehicles Application number: CN 201810379637.4 Applicant: China North Vehicle Research Institute Application date: 2018-4-25 Patent type: Invention application The present invention discloses a four-stage hydraulic-mechanical stepless transmission device for tracked vehicles, including: planetary coupling mechanism, hydraulic speed regulation components, changing control parts, hydraulic stepless steering parts, hydraulic deceleration parts; planetary coupling mechanism includes four planetary rows; hydraulic speed regulating parts include a hydraulic speed regulating circuit composed of a variable pump and a quantitative motor; changing control parts include four clutches And a brake; the hydraulic stepless steering part includes a hydraulic speed regulating circuit composed of a variable pump and a quantitative motor; the hydraulic deceleration part includes a hydraulic coupling. The invention adopts the form of hydraulic-mechanical compound stepless transmission, and realizes 4 front and 1 reverse, center steering and emergency mechanical gear through a planetary coupling mechanism. The high-speed vehicle can also use a hydraulic coupler to achieve hydraulic deceleration, which can meet the high-speed off-road of the vehicle. And the demand for flexible steering greatly improves the power and economy of the vehicle.
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