Safety wheel chock capable of preventing vehicles or airplanes from climbing over

Abstract

The invention belongs to the field of safety devices capable of preventing vehicles or airplanes from climbing over and discloses a safety wheel chock capable of preventing vehicles or airplanes from climbing over. The safety wheel chock comprises a support body, the included angle between the bottom surface of the support body and a wheel underlying surface is smaller than 90 degrees, a plurality of cylindrical rubber rolling bodies in arc-shaped arrangement are mounted in the support body, the wheel underlying surface of the support body is provided with a plurality of parallel elongated slots capable of exposing the outer arc-shaped surfaces of the cylindrical rolling bodies, and the exposed outer arc-shaped surfaces form an arc-shaped concave surface fitting the radian of a vehicle wheel or an airplane wheel. The safety wheel chock is capable of effectively turning the mechanical stopping, purely depending on body arc-shaped-surface friction, of an existing wheel chock into rolling stopping of the rolling bodies so as to truly achieve the safety stopping and warning effects on the vehicles or airplanes.

Description

technical field [0001] The invention relates to a safety device for preventing vehicles and aircraft from climbing over, in particular to a safety wheel chock for preventing vehicles and aircraft from climbing over. Background technique [0002] When the aircraft parks on the apron of the airport, the braking force of the aircraft on the ground mainly depends on the wheel hydraulic system and the braking force provided by the brake pressure accumulator. However, when the aircraft is powered off, the parking pressure provided by the hydraulic system can only maintain 8 hours, after that it will be against the wheel chocks. Existing vehicles are equipped with a parking brake function, but when parking on a steep road, the parking brake force of the vehicle may be insufficient, and the vehicle is prone to slipping, causing safety accidents. , the wheels still require safety chocks. [0003] The safety wheel chocks of existing aircraft or vehicles rely solely on the friction o...

AI Technical Summary

Problems solved by technology

However, once there is a strong wind or the slope of the ground is too large, vehicles and aircraft will slide forward or backward by themselves due to their own weight and external force. Due to the limited height of the safety wheel chock, the surface is fixed as a whole. During the sliding process of the vehicle or aircraft, the instantaneous acceleration is very large, and the wheel chock itself cannot effectively change the movement trend of the vehicle or aircraft, and the resulting forward or backward movement trend cannot be intuitively and instantly perceived by the ground duty personnel The movement of the tires, and then miss the best time for on-site disposal, will cause vehicles or aircraft to climb over the wheel chocks, resulting in safety accidents

There have been accidents in China where an aircraft slipped forward or backward under the blowing of strong winds, crossed the wheel block and hit the parking bridge. Similar accidents occurred in foreign countries. If it is a carrier-based aircraft, it will Under such circumstances, relying solely on the wheel chocks, if the ship encounters severe sea conditions and the hull swings and tilts, accidents of aircraft slipping over the wheel chocks will also occur.

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