A gas-hydraulic hybrid braking structure and mining machinery vehicle

Abstract

The invention discloses a gas-liquid composite braking structure and a mining mechanical vehicle, and belongs to the field of machine manufacturing. The gas-liquid composite braking structure comprises a work brake (1), a brake oil cylinder (2), a gas storage device, a parking brake valve (9), a hydraulic pump (8) and a parking brake (7). The gas storage device is respectively connected with the brake oil cylinder (2) and the parking brake valve (9). The brake oil cylinder (2) is connected with the work brake (1), and the gas storage device drives the brake oil cylinder (2) to convey hydraulic oil to the work brake (1). The gas storage device controls the opening and closing of the parking brake valve (9), the hydraulic pump (8) is connected with the parking brake (7) through the parking brake valve (9), and the parking brake valve (9) controls the on-off states of the hydraulic oil pipeline between the hydraulic pump (8) and the parking brake (7). According to the technical scheme, the production and using cost of a braking system is lowered through gas-liquid composite braking, the whole system can provide strong braking force, and the gas-liquid composite braking structure can be applied to mining vehicles of large tonnage.

Description

technical field [0001] The invention belongs to the field of mechanical equipment manufacturing, and relates to a braking system, in particular to a gas-hydraulic hybrid braking structure and a mining mechanical vehicle. Background technique [0002] With the continuous development of the national economy and the increasingly large-scale and intelligent vehicles, mining dump trucks are developing towards large-scale and high-efficiency. But no matter what kind of car the braking system is all indispensable, the hydraulic braking system is generally used on the large mining vehicles in use now, and the pneumatic hydraulic system is generally used on small vehicles. High hydraulic brake pressure and fast response have greater braking force. However, most of the hydraulic brake components of mining vehicles are imported and the overall price is relatively high, which requires regular maintenance. The components of the pneumatic brake system are currently mature and localized, b...

AI Technical Summary

Problems solved by technology

[0003] 1) The overall complexity of the hydraulic braking system, the high cost requires regular maintenance and replacement of the hydraulic oil filter;

[0004] 2) Pneumatic braking system provides less braking force due to the lower limiting pressure of the components

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