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[CN 201710299594.4] Hydraulic-mechanical compound stepless transmission device for loader
[CN 201710299594.4] A hydraulic-mechanical composite stepless transmission device for loaders Title: A hydraulic-mechanical composite stepless transmission device for loaders Application number: CN 201710299594.4 Applicant: Beijing University of Technology Application date: 2017-5-2 Patent type: Invention application The present invention provides a hydraulic-mechanical composite stepless transmission device for loaders, which includes: hydraulic speed control circuit, forward and reverse mechanism, dividing and merging mechanism, hydraulic section fixed axis gear transmission mechanism, hydraulic machinery section I fixed axis gear transmission mechanism, hydraulic machinery section II fixed axis gear transmission mechanism and output part. The forward gear of the transmission device includes a hydraulic starting section and two hydraulic mechanical sections for low-speed operation and high-speed walking respectively. The three working sections are continuously changed, the speed of hydraulic components is continuously changed, the clutch is switched without speed difference, and the operation is simple. The transmission efficiency is high, and the power of the required hydraulic components is small; the reverse gear includes a hydraulic section and a hydraulic mechanical section; no clutch is required for forward and reverse switching, smooth switching is possible, which on the one hand increases the working efficiency and on the other hand reduces the wear of the clutch actuating elements.
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