Hybrid power transmission device for construction machinery
A hybrid power and transmission technology, which is applied in the field of vehicle transmission, can solve the problems of reducing the power demand of the outer drive motor, and achieve the effects of improving fuel economy, convenient selection and reliability.
Active Publication Date: 2019-03-22
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology
Northeastern University applied electromechanical compound transmission technology to tracked vehicles, and proposed a differential steering scheme (patent number CN201120556816), which reduces the required power of the outer drive motor during the steering process, but the motor needs to provide both direct driving and steering. Power is required, so higher requirements are placed on the design and selection of the motor
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Embodiment Construction
[0022] The hybrid power transmission device for construction machinery of the present invention is composed of three planetary rows and three motors. The input power is transmitted to the planetary row through the front transmission box, and after being transmitted by the coupling mechanism, it is output to the motor A through the sun gear to generate electricity. The power of the planetary carrier of the coupling mechanism and the power output by the motor B are jointly transmitted to the ring gear of the converging planetary row, and the power is output by the planetary carrier of the converging planetary row, thereby realizing stepless speed change. The steering motor inputs power to the sun gears of the converging planetary rows on both sides through the zero shaft to realize zero differential steering.
[0023] The power of the engine is transmitted to the ring gear of the coupling mechanism through the clutch and the front transmission case. The planet carrier of the cou...
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The invention discloses a hybrid power transmission device which mainly consists of three planetary gear trains and three motors / generators, wherein an engine 2 is connected to a ring gear 5 of the first planetary gear train through a main clutch 3 and a front transmission box 4; a rotor 7 of the first motor / generator 6 is connected to a sun gear 9 of the first planetary gear train through a transmission gear 8; a rotor 11 of the second motor / generator 10 is connected to a ring gear 13 of the second planetary gear train through a transmission gear 12; the ring gear 13 of the second planetary gear train is rigidly connected with a planet carrier 14 of the first planetary gear train and a ring gear 15 of the third planetary gear train; a rotor 17 of the third motor / generator 16 is connected to a sun gear 19 of the second planetary gear train through a zero axis 18; the rotor 17 of the third motor / generator 16 is connected to a sun gear 21 of the third planetary gear train through the zero axis 18 and a transmission gear 20; and a planetary carrier 22 of the second planetary gear train and a planet carrier 23 of the third planetary gear train are output elements of the hybrid power transmission device 1.
Description
technical field [0001] The invention relates to a transmission device of a vehicle, in particular to a hybrid power vehicle, especially a hybrid power transmission device of a hybrid power vehicle for engineering machinery. Background technique [0002] Today's petroleum resources are in short supply, and pure electric drive technology is not yet mature, so electromechanical hybrid technology has become the most promising vehicle energy-saving technology. Traditional construction machinery is usually driven by a diesel engine. Due to its complex and changeable working conditions, it needs to switch working conditions frequently and perform start-up and braking operations, and its power and fuel economy are not ideal. [0003] The use of hybrid powertrain for construction machinery is currently recognized as the most effective and feasible technical route for energy saving and emission reduction. The hybrid electric transmission system has the advantages of fewer parts, high...
Claims
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IPC IPC(8): B60K6/365B60K6/543B62D11/02
CPCB60K6/365B60K6/543B62D11/02
Inventor 韩立金项昌乐刘辉马越伯琳
Owner BEIJING INSTITUTE OF TECHNOLOGYGY