Bridge-free hydraulic driving device of large-power land leveler
A driving device and grader technology, which is applied to mechanically driven excavators/dredgers, earth movers/shovels, construction, etc., can solve the problem of poor load adaptability, easy impact, and grader body Long-term problems, to achieve the effect of improving self-adaptive ability, improving utilization rate, and convenient operation
Inactive Publication Date: 2014-06-18
CHANGAN UNIV
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Problems solved by technology
Among them, the mechanical transmission method has high transmission efficiency, and the operating speed is less affected by load changes. However, the mechanical transmission has step-by-step speed regulation, and shocks are likely to occur when shifting gears, which affects the operation quality and operating comfort, and the load self-adaptive ability is poor. When the load changes, the operator needs to manually change the gear to meet the power and economy of the grader. The load of the grader changes frequently, which greatly increases the labor intensity of the operator.
The transmission method of the hydraulic mechanical type requires a hydraulic torque converter, and the hydraulic torque converter itself has a problem that is not easy to overcome in terms of structure, that is, low efficiency, and at the same time, the motor grader has a long body
Therefore, the obvious disadvantage of the motor grader with this structure is that the effective utilization rate of the engine 1 is low
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[0023] The present invention is described in further detail below in conjunction with accompanying drawing:
[0024] refer to figure 1 and figure 2 , the high-power motor grader bridgeless hydraulic drive device of the present invention includes an engine 1, a transfer case 2, a first hydraulic variable pump 3, a second hydraulic variable pump 4, and a third hydraulic variable pump 5, which are used to drive the motor grader The first front drive wheel 23 and the second front drive wheel 24 rotate the first transmission system, the first rear drive wheel 25 for driving the motor grader and the second rear drive wheel 27 rotate the second transmission system, and are used for The third transmission system that drives the third rear drive wheel 26 and the fourth rear drive wheel 28 of the motor grader to rotate; the output shaft of the engine 1 is connected with the input shaft of the transfer case 2, and the transfer case 2 is provided with three Output shafts, the three outpu...
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The invention discloses a bridge-free hydraulic driving device of a large-power land leveler. The bridge-free hydraulic driving device comprises an engine, a transfer case, a first hydraulic variable pump, a second hydraulic variable pump, a third hydraulic variable pump, a first transmission system for driving a first front driving wheel and a second front driving wheel on the land leveler to rotate, a second transmission system for driving a first rear driving wheel and a second rear driving wheel of the land leveler to rotate, and a third transmission system for driving a third rear driving wheel and a fourth rear driving wheel of the land leveler to rotate. The bridge-free hydraulic driving device of the large-power land leveler is convenient to operate, small in size and light in weight; energy sources are saved.
Description
technical field [0001] The invention relates to a drive device, in particular to a bridgeless hydraulic drive device for a high-power grader. Background technique [0002] A grader is a construction machine that mainly uses a blade and is equipped with various other replaceable operating devices to perform land leveling and shaping operations. It is mainly used for large-scale leveling operations and slope scraping in roads, airports, mining areas, and farmland water conservancy. It is one of the important equipment in the construction of national defense projects, transportation, mines, and water conservancy infrastructure. [0003] In currently known high-power motor graders, the transmission modes of the travel drive system are mechanical transmission, hydraulic mechanical transmission, and electric transmission. Among them, the mechanical transmission method has high transmission efficiency, and the operating speed is less affected by load changes. However, the mechanic...
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IPC IPC(8): E02F3/84E02F3/85
Inventor 王欣焦生杰车阳
Owner CHANGAN UNIV