Energy-saving and reliable scraper hydraulic system

Abstract

The invention discloses an energy-saving and reliable hydraulic system of a carry-scraper. The energy-saving and reliable hydraulic system comprises a power module, a brake hydraulic module, a turninghydraulic module and a lifting tipping bucket working hydraulic module and also comprises a turning sequence valve and a working sequence valve. The power module comprises a fuel tank and a hydraulicpump. An output end of the hydraulic pump is connected to an input end of the turning sequence valve, and an output end of the turning sequence valve is connected to an input end of the working sequence valve; the output end of the hydraulic pump is also connected to the brake hydraulic module, the output end of the turning sequence valve is also connected to the turning hydraulic module, and anoutput end of the working sequence valve is connected to the lifting tipping bucket working hydraulic module. The energy-saving and reliable hydraulic system achieves graded utilization and full utilization of hydraulic energy creatively through the two sequence valves and three energy accumulators, cancels a turning pump, a brake pump and the like which are independently arranged, and not only guarantees the reliability of the module systems, but also improves the utilization ratio the hydraulic energy of the hydraulic pump to a great extent.

Description

technical field [0001] The invention relates to a hydraulic system of a scraper. Background technique [0002] The traditional hydraulic system of a scraper is often composed of a working system, a steering system, and a braking system. Each of the three systems uses one or two hydraulic pumps. The disadvantages are: (1) As long as one hydraulic pump has a problem, the scraper hydraulic The system will be shut down due to failure, and the reliability is poor; (2) Since the three systems operate in isolation, the energy efficiency of the hydraulic pump is low; The impact of the system, and the external impact caused by the uneven road surface and the rock's recoil on the bucket, etc., the failure rate of the oil cylinder is high and the service life is short. Contents of the invention [0003] The invention proposes an energy-saving and reliable scraper hydraulic system, the purpose of which is to: (1) improve the reliability of the hydraulic system; (2) improve the utiliz...

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Problems solved by technology

[0002] The traditional hydraulic system of a scraper is often composed of a working system, a steering system, and a braking system. Each of the three systems uses one or two hydraulic pumps. The disadvantages are: (1) As long as one hydraulic pump has a problem, the scraper hydraulic The system will be shut down due to failure, and the reliability is poor; (2) Since the three systems operate in isolation, the energy efficiency of the hydraulic pump is low; The impact of the system, and the external impact caused by the uneven road surface and the rock's recoil on the bucket, etc., the failure rate of the oil cylinder is high and the service life is short

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