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Equal-proportional four-stage hydraulic-mechanical compound stepless transmission

A technology of hydraulic machinery and stepless transmission, applied in the field of vehicle transmission, can solve the problems of unfavorable transmission system power density and reliability improvement, large volume and weight, complicated control of the starting clutch, etc., and achieves good starting characteristics, high transmission efficiency, compact effect

Active Publication Date: 2016-03-02
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0003] Equal differential hydraulic mechanical stepless transmission can use the pure hydraulic section to start, and the starting characteristics are good; because proportional hydraulic mechanical stepless transmission has no zero-speed output, it is necessary to add a starting clutch for slippery start, and the control of the starting clutch is complicated, and the volume and weight Larger, not conducive to the improvement of power density and reliability of the transmission system

Method used

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  • Equal-proportional four-stage hydraulic-mechanical compound stepless transmission

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Embodiment Construction

[0017] See attached figure 1 , one An equal-ratio four-stage hydraulic-mechanical compound stepless transmission device, composed of planetary row k3, planetary row k4, planetary row k5 and the ring gear 37 of the hydraulic section planetary row to form a positive and negative confluence planetary mechanism, and planetary row k1, planetary row 3-speed transmission mechanism composed of row k2 planetary row;

[0018] Engine input shaft 17 is connected to input gear 18; gear B16 meshes with input gear 18 on the one hand, and meshes with transition gear 12 on the other hand; transition gear 12 meshes with hydraulic pump gear 13, and hydraulic pump gear 13 is connected with hydraulic pump 14; Clutch C0 is connected with gear B16 and the ring gear 31 of the positive and negative confluence planetary mechanism; the hydraulic motor 10 is connected with the hydraulic motor gear 11, and the hydraulic motor gear 11 meshes with the gear A15, and the gear A15 is connected with the large...

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Abstract

The invention belongs to the technical field of vehicle transmission, and particularly relates to an equal-proportion four-section-type hydraulic mechanical composite stepless transmission device. According to the technical scheme, the equal-proportion four-section-type hydraulic mechanical composite stepless transmission device is composed of a frontward and backward convergence planet mechanism formed by a planet bar k3, a planet bar k4, a planet bar k5 and a gear ring (37) of a hydraulic-section planet bar, a three-gear speed changing mechanism composed of a planet bar k1 and a planet bar k2, a transmission device body, an engine input transmission shaft and a hydraulic pump / motor. According to the principle of continuous section changing, one hydraulic section and three hydraulic mechanical sections are formed, and two mechanical gears can be formed. The equal-proportion four-section-type hydraulic mechanical composite stepless transmission device has the advantages of realizing continuous stepless speed changing, being good in starting characteristic and being high in transmission efficiency.

Description

technical field [0001] The invention belongs to the technical field of vehicle transmission, and in particular relates to a proportional hydraulic-mechanical compound stepless transmission device. Background technique [0002] The hydraulic-mechanical compound stepless transmission can realize stepless speed regulation, optimize the working state of the engine, and enable the vehicle to obtain the best power performance and fuel economy performance. The output characteristic of the differential hydraulic-mechanical compound stepless transmission is a constant torque characteristic, which does not meet the output characteristics of the vehicle transmission system; while the proportional hydraulic-mechanical compound stepless output has a segmental constant torque characteristic, which meets the requirements of the vehicle transmission system. Constant power characteristic output, more widely used in vehicle transmission system. [0003] Equal differential hydraulic mechanica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H47/04F16H57/023
CPCF16H47/04F16H57/023F16H2200/2015F16H2200/2043
Inventor 胡纪滨
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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