Large-tonnage hydraulic mining vehicle braking system and method

Abstract

The invention discloses a large-tonnage hydraulic mining vehicle braking system which comprises a hydraulic braking unit, a hydraulic cooling unit and a cooling control system. The hydraulic braking unit comprises a hydraulic oil tank, a double-way prefill valve, a double-way braking valve, a parking brake handle valve, a first hydraulic pump, a first filter, a first overflow valve, a front axle braking energy accumulator, a rear axle braking energy accumulator, a front axle brake, a rear axle brake and a parking brake. The hydraulic cooling unit comprises a cooling fluid tank, a second hydraulic pump, a second filter and a second overflow valve, and the cooling control system comprises a controller, a first temperature sensor, a second temperature sensor, a third temperature sensor, a fourth temperature sensor and a relay. The invention further discloses a large-tonnage hydraulic mining vehicle braking method. The large-tonnage hydraulic mining vehicle braking system is novel and reasonable in design, convenient to achieve and safe and reliable in braking, ensures the vehicle safety, is good in practicability, good in usage effect and suitable for popularization and usage, and the brake is good in cooling effect.

Description

technical field [0001] The invention belongs to the technical field of engineering machinery, and in particular relates to a large-tonnage mining vehicle hydraulic braking system and method. Background technique [0002] At present, in the field of mine engineering, large-tonnage (maximum total weight over 14 tons) mining vehicles are widely used, and the braking performance requirements of large-tonnage mining vehicles are also relatively high. Ordinary dry brakes are frequently braked under heavy load and harsh environment conditions, the friction disc wears and the thermal degradation of heat generation is relatively serious, and the braking performance cannot be guaranteed. The wet brake is a fully enclosed multi-disc brake, which has the advantages of large braking torque, smooth braking, good waterproof performance, high thermal stability, reliable braking, and long service life. Therefore, wet multi-disc brakes with better braking performance are often used in constr...

AI Technical Summary

Problems solved by technology

[0004] At present, the supporting hydraulic system for a multi-functional wet multi-disc brake with adjustable preload in China cannot completely separate and control each braking process without affecting each other , there is also the disadvantage that the forced cooling system starts to work once the engine is ignited, and the internal and external coolant of the wet multi-disc brake is continuously exchanged, which wastes energy and increases the probability of damage to the entire braking system.

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