Braking system of mechanical drive road roller

Abstract

The invention discloses a braking system of a mechanical drive road roller. The braking system of the mechanical drive road roller comprises an engine, an air compression pump, an air storage cylinder, a foot brake valve, a wheel edge brake caliper and a gearbox, and the engine, the air compression pump and the gas storage cylinder are connected in sequence. The air storage cylinder is connected with the foot brake valve. The braking system of the mechanical drive road roller further comprises a pressure reducing valve, a two-position four-way solenoid valve, a stress application cylinder, a delay relay, a handle controller and a speed sensor. The air storage cylinder, the pressure reducing valve and the two-position four-way solenoid valve are connected in sequence, the foot brake valve and the speed sensor are separately connected with the two-position four-way solenoid valve, and the two-position four-way solenoid valve, the stress application cylinder and the wheel edge brake caliper are connected in sequence. The handle controller is connected with the two-position four-way solenoid valve through the delay relay, and the handle controller is further connected with the gearbox.The resetting signal of the control handle is collected, after the signal is received, a driving wheel stops rolling under the action of the wheel edge caliper disc brake, the road roller stops moving rapidly under the action of sliding friction force, and a driver does not need to step on a brake pedal, so that the labor intensity is reduced.

Description

technical field [0001] The invention relates to a braking system of a mechanically driven road roller, which belongs to the field of road roller braking. Background technique [0002] At present, there are two parking methods for mechanically driven road rollers in the industry: [0003] One is to center the joystick. When the control handle returns to the center, a return signal is sent to control the electro-hydraulic valve on the gearbox, and the gearbox switches back to the neutral gear under the action of the internal wet clutch. At this time, the gearbox no longer transmits power, and the driving wheels are on Under the action of the inertia of the roller, the roller still performs rolling motion, and the roller gradually decelerates under the action of rolling friction until it stops. This process lasts for a long time; [0004] Another way to stop is to step on the brake pedal. When the roller is running, the driver steps on the brake pedal, and the parking action...

AI Technical Summary

Problems solved by technology

Taking the compacted roadbed of 30m as an example, the driver needs to step on the brake pedal every 40 seconds, working 8 hours a day, and the driver needs to step on the brake pedal 720 times a day, which greatly increases the speed of the driver. labor intensity

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