Parking brake hydraulic device for explosion-proof trackless rubber-tyred vehicles

Abstract

The invention relates to a parking brake hydraulic device for an explosion-proof trackless rubber-tyred vehicle, comprising: a box body sealed with a manual parking valve and a parking brake pipeline controlled by the manual parking valve; It is arranged on the outer wall of the box body; the second slider is slidably arranged on the inner wall of the box body, the second slider is magnetically connected to the first slider, and the second slider can drive the manual parking valve. The operating rod is rotatably arranged on the outer wall of the box body; the two ends of the connecting rod are respectively rotatably connected with the operating rod and the first slider. The screw rod is rotatably arranged on the inner wall of the box body, and the screw rod is threadedly connected with the second slider; the third slider is slidably arranged on the inner wall of the box body, and threadedly connected with the screw rod; the sleeve column is rotatably arranged on the third slider On, the handle of the manual parking valve is slidably inserted in the sleeve. It can effectively prevent the parts inside the box from contacting the flammable and explosive gas outside the box, and can prevent the accidental swing of the operating rod, which is safer, more reliable, and more labor-saving.

Description

technical field [0001] The invention relates to the technical field of hydraulic brakes, in particular to a parking brake hydraulic device for explosion-proof trackless rubber-tyred vehicles. Background technique [0002] The National Coal Mine Safety Supervision Bureau mine auxiliary transportation management stipulates that underground explosion-proof trackless rubber-tyred vehicles must be wet-braked. At present, the domestic wet-type control system is composed of scattered installations of various components. The defect of this installation method lies in: the whole vehicle tube There are many roads and scattered layout; the installation is complicated, the reliability is poor, and there are many safety hazards; maintenance is inconvenient, the workload is heavy, the vehicle structure is complex, and fault monitoring is inconvenient. [0003] Chinese patent CN209274575U discloses "a parking brake hydraulic device for an explosion-proof trackless rubber-tyred vehicle". T...

AI Technical Summary

Problems solved by technology

[0004] The handle of the manual valve is movable, and penetrates the box to protrude to the outside of the box. The box and the handle cannot be completely sealed, and the components in the box are connected with the outside world. After the outside gas enters the box, the box If the parts in the body generate sparks, it is easy to cause an explosion

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