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【 CN 201710299574.7 】 Loader hydraulic mechanical stepless transmission device
[CN 201710299574.7] Title of Stepless Transmission Device for Loader Hydraulic Machinery: Application Number of Stepless Transmission Device for Loader Hydraulic Machinery: CN 201710299574.7 Applicant: Beijing University of Technology Application Date: 2017-5-2 Patent Type: Application for Invention The present invention discloses a stepless transmission device for loader hydraulic machinery, including: hydraulic speed regulation circuit, planetary dividing and merging mechanism, hydraulic mechanical fixed-axis gear transmission mechanism and forward-backward mechanism. The transmission device uses a planetary dividing and merging mechanism to realize two or three hydraulic mechanical sections, which are respectively used for starting, low-speed operation (and high-speed walking); the reverse gear includes two hydraulic mechanical sections. There is no circulating power in each hydraulic mechanical section, and compared with the hydromechanical power shift gearbox, the transmission device can obtain higher transmission efficiency. In addition, only one clutch needs to be operated to switch between sections, which can realize smooth switching.
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