Rotary-type self-latching safety braking device and working method thereof

Abstract

The invention relates to a rotary-type self-latching safety braking device and a working method thereof. The rotary-type self-latching safety braking device comprises a rotating wheel, an axle, an axle base, a movable pin key and a pin key resetting device. An inner cylindrical surface of the rotating wheel, which is matched with the axle, is provided with a plurality of key slots. The axle is provided with a radial sliding chute which is internally provided with the movable pin key and the pin key resetting device. During the slow rotating process of the rotating wheel, the movable pin key makes slow radial reciprocating motion in the radial sliding chute of the axle correspondingly, and the axle can normally rotate; and when the rotation speed of the rotating wheel suddenly increases, the reciprocating motion of the movable pin key is damaged, one end of the movable pin key is propped into the key slot of the rotating wheel, and the rotating wheel is self-latching braked immediately. The invention has compact structure, simple construction, small volume, good sealing property, sensitive action, high reliability, short braking distance and safe use, and is applicable to the engineering fields such as building, machinery, metallurgy, mining, vehicles, vessels and the like. When in normal work, the rotary-type self-latching safety braking device slowly runs; and when in dangerous situations, the device fast runs, and the self-latching safety braking device in running is stopped immediately.

Description

technical field [0001] The invention relates to a wheel-type self-locking safety braking device and its working method, which is suitable for engineering fields such as construction, machinery, metallurgy, mines, vehicles, ships, etc., which operate at a slow speed during normal operation and dangerous conditions during fast operation. Self-locking safety braking device that must stop running immediately. Background technique [0002] The building-attached lifting scaffold is the equipment used in the construction of high-rise and super high-rise buildings. During use or operation, its lifting or lowering process is carried out slowly. If it falls quickly, it is an abnormal situation, which will cause high-altitude falling or equipment damage. Accidents, so the equipment must be equipped with a self-locking safety brake device to ensure safe use. [0003] Building construction elevators are also equipment used in high-rise and super high-rise building construction. During u...

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Problems solved by technology

[0002] The building-attached lifting scaffold is the equipment used in the construction of high-rise and super high-rise buildings. During use or operation, its lifting or lowering process is carried out slowly. If it falls quickly, it is an abnormal situation, which will cause high-altitude falling or equipment damage. Accidents, so the equipment must be equipped with a self-locking safety brake device to ensure safe use

[0003] Building construction elevators are also equipment used in high-rise and super high-rise building construction. During use or operation, their rise and fall are also slow. If they fall quickly, it will cause high-altitude fall or equipment damage accidents. Therefore, equipment must also be installed Self-locking safety brake device

[0004] Many of the material conveying equipment or conveyor belts used in the machinery industry and metallurgical industry, and the vehicles in mine tunnels, ships and oceans, etc., require slow uniform speed or slow intermittent operation. Casualties or equipment damage accidents, so equipment self-locking safety braking devices must be installed

[0005] The seat belt used on the vehicle can be pulled slowly during the normal movement of the occupant, but when the vehicle brakes suddenly, the upper body of the occupant leans forward sharply, and the seat belt is pulled out quickly, which will cause personal injury, so a self-locking safety brake must be installed The device clips the seat belt to ensure the safety of the occupants

[0006] At present, many engineering fields such as construction, machinery, metallurgy, mines, vehicles, ships, etc. operate at a slow uniform speed or in slow intervals. Fast operation is an abnormal condition, and most of the equipment that will cause casualties or equipment damage accidents are equipped with self-locking safety systems. However, some of these self-locking safety brake devices have complex structures and high failure rates, which affect the normal working process. Needle and follow-up device, at the same time, it is easy to cause jamming during the lowering process of the frame. Some operators artificially invalidate the swing needle, which brings major safety hazards; some self-locking safety brake devices are large in size and use for a period of time Afterwards, it is easy to fail. Once an accident occurs, it is easy to cause a high-altitude fall or equipment damage accident, which will bring safety hazards. For example, the self-locking safety brake device of a construction elevator is equipped with a hammer device that uses the centrifugal force generated by rapid rotation to brake. , which are bulky and require regular maintenance; some self-locking safety brake devices have complex structures and require high manufacturing precision, such as the automatic trigger brake devices on seat belts used in many cars; some self-locking safety brake devices The device is controlled by electromechanical integration, which is not only complicated, but also high in cost and has many failure points, such as many conveyor belts and material carriers in the machinery industry and metallurgical industry.

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