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[CN 201910096162.2] Construction machinery and its hydraulic machinery composite gearbox
[CN 201910096162.2] Title of a composite gearbox for construction machinery and its hydraulic machinery: Application number of a composite gearbox for construction machinery and its hydraulic machinery: CN 201910096162.2 Applicant: Beijing Yuanhai Chuanzhi Technology Co., Ltd. Application date: 2019-1-31 Patent type: Application for the invention The present invention discloses a composite gearbox for construction machinery and its hydraulic machinery, including a box body and an input shaft, a hydraulic pump shaft, a first intermediate shaft, a second intermediate shaft and an output shaft, the input shaft is connected with the hydraulic pump shaft, one end of the hydraulic pump shaft is connected with a hydraulic pump, and one end of the second intermediate shaft is connected with a hydraulic motor. The hydraulic pump can drive the hydraulic motor to rotate forward or reverse; the input shaft can pass through the first forward clutch, The second forward clutch or reverse clutch is connected with the first intermediate shaft, and the movement of the first intermediate shaft and the second intermediate shaft can be combined through the first planetary gear and output, the second planetary gear is provided with a brake. The invention can improve the transmission efficiency of the transmission device, make the engine often work in the economic speed range, and reduce the fuel consumption and noise of the construction machinery.
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