Micro-motion function and hydraulic brake control system of wheeled dozer

A hydraulic braking and control system technology, applied in the direction of brakes, brake transmissions, transportation and packaging, etc., can solve the problems of inability to effectively control the driving force of the tires of the whole machine, heavy parking brake operation, and increased tire wear. Achieve the effect of increasing driving safety, increasing reliability and reducing tire wear

Active Publication Date: 2015-04-22
ZHENGZHOU YUTONG HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The driver with the above functions cannot effectively control the driving force of the tires of the whole machine, resulting in tire slippage and increased tire wear, so engine power loss is inevitable.
In addition, there are disadvantages such as relatively heavy parking brake operation and poor parking effect.

Method used

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  • Micro-motion function and hydraulic brake control system of wheeled dozer

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with embodiment (accompanying drawing):

[0025] Such as figure 1As shown, a tire-type bulldozer inching function and hydraulic brake control system of the present invention includes a fuel tank 1, an oil suction filter 2, a gear pump 3, a high pressure filter 4, a liquid filling valve 5, an inching cylinder 6, and a left pedal Valve (micro function pedal valve) 7, pressure switch 8, brake valve group 11, right pedal valve (pilot brake pedal valve) 13, shuttle valve valve group 14, rear axle brake 15, front axle brake 16, parking Vehicle brake 17; the brake valve group 11 is an integrated valve block, including a front axle accumulator 9, a rear axle accumulator 10, an emergency brake solenoid valve 12, a low parking pressure alarm 18, an automatic emergency brake dynamic switch 19, low brake pressure alarm 20, parking solenoid valve 21, first accumulator discharge valve 22, second accumulator dischar...

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Abstract

The invention discloses a micro-motion function and hydraulic brake control system of a wheeled dozer, and belongs to the field of wheeled dozers. The micro-motion function and hydraulic brake control system comprises an oil tank, an oil suction filter, a gear pump, a high-pressure filter, a prefilling valve, a micro-motion oil cylinder, a left pedal valve, a pressure switch, a brake valve set, a right pedal valve, a shuttle valve set, a rear axle brake, a front axle brake and a parking brake. Through the left pedal valve (micro-motion function pedal valve), a driver can effectively control tire drive force by combining the condition that the tire drive force ranges from 0 percent to 100 percent, wheel slipping is avoided, tire abrasion is reduced, and therefore engine power can be effectively utilized, oil consumption can be reduced, and circulating speed can be improved. According to the micro-motion function, the tire drive force is effectively controlled, meanwhile, emergency braking can be achieved through a service brake, and the reliability and running safety of a brake system are obviously increased. Main elements of the control system are integrated on the brake valve set, pipe connection is simplified greatly, and pipe arrangement is more reasonable.

Description

technical field [0001] The invention relates to a tire-type bulldozer micro-motion function and a hydraulic braking control system, which belongs to the field of tire-type bulldozers. Background technique [0002] At present, tire-type bulldozers have no inching function, and the service brakes cannot be used as emergency brakes. In addition, the brake system usually adopts an air-top oil brake system or a full-hydraulic wet brake system. The parking brake uses the joystick to pull the flexible shaft to expand the brake shoe to realize the parking brake. The driver with the above functions cannot effectively control the driving force of the tires of the whole machine, resulting in tire slippage and increased tire wear, so engine power loss is inevitable. In addition, there are shortcomings such as relatively heavy parking brake manipulation and poor parking effect. Contents of the invention [0003] The object of the present invention is to provide a tire-type bulldozer ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T13/68B60T8/17
CPCB60T8/1701B60T13/686
Inventor 段飞何建伟李玲琴孙大亮李文定轩飞
Owner ZHENGZHOU YUTONG HEAVY IND
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