A speed-adjustable stair transportation device and method

Abstract

The invention discloses a speed-adjustable stair conveying device and method. When a person goes downstairs, the person controls a brake handle to drive a loading basket to continuously slide along a stair railing along with a sliding block and clenches a handle knob, the handle knob is rotated to tension a steel wire rope so that the two ends of the upper portion of a caliper brake can be tightened to the middle, and a brake pad clamps the stair railing, so that the sliding speed of the sliding block is decreased; meanwhile, by means of the gravity of cargoes and the gravity of the loading basket, a vertical sliding block is downward pressed via a pothook, a lever rotates around a pin shaft to drive a lower gasket to upwards jack an upper gasket, a unilateral brake rotates around a rotary handle screw to make an arc-shaped brake pad press the stair railing, and friction braking force is generated. When the person goes upstairs, the rotary handle screw is rotated to make the universal brake move backwards, and the upper gasket and the lower gasket are staggered front and back; and when the vertical sliding block is downwards pressed through the gravity of the cargoes and the gravity of the loading basket via the pothook, the arc-shaped brake pad does not press the stair railing, no friction braking force is generated, braking force during going-down can be automatically adjusted according to the weight of the cargoes, and braking is relieved during going-up, the cargoes are maintained in the horizontal state all the time for conveying, and stable and safe conveying is ensured.

Description

technical field [0001] The invention relates to the field of transportation equipment, in particular to a transportation device that can be used in stairwells, and the transportation speed can be automatically adjusted according to the weight of goods. Background technique [0002] At present, many low-rise buildings are not equipped with elevators or other facilities for carrying people and goods, which makes the handling of heavy objects very troublesome, which is not only labor-intensive but also inefficient, such as the transportation of building materials between corridors, furniture handling and garbage bin recycling. Work is hindered and people's living needs cannot be met. [0003] For the cargo transportation device in the stairwell, most of the existing devices use three-star wheels, chains, crawlers and other structures, which cannot meet the needs of flexibility and load-bearing at the same time, and the structure is complex and the operation is cumbersome. The ...

AI Technical Summary

Problems solved by technology

[0002] At present, many low-rise buildings are not equipped with elevators or other facilities for carrying people and goods, which makes the handling of heavy objects very troublesome, which is not only labor-intensive but also inefficient, such as the transportation of building materials between corridors, furniture handling and garbage bin recycling. Work is hindered and cannot meet people's living needs

[0003] For the cargo transportation device in the stairwell, most of the existing devices use three-star wheels, chains, crawlers and other structures, which cannot meet the needs of flexibility and load-bearing at the same time, and the structure is complex and the operation is cumbersome.

The document with the Chinese patent application number CN201420768154.0 proposes a dual-purpose transport vehicle for flat ground and upstairs and downstairs, using two kinds of carrying mechanisms, sled boards and wheels, to realize the transportation of loads on the stairs and on the flat ground respectively, but the carrying mechanism When the goods are transported on the stairs, the inclination angle of the stairs may cause the goods on the load-bearing plate to overturn and the impact of pressure concentration on the transportation, making it difficult for the cargo truck to maintain stability when transporting on the stairs

Another example is that a kind of stair transportation device is proposed in the literature with the Chinese patent application number CN201410735447.3. The basket has no degree of freedom to swing, and the bottom of the basket cannot be kept level at all times on the inclined section and the horizontal section of the handrail, and the stability of cargo transportation cannot be guaranteed; The sliding speed of the loading basket cannot be well controlled, and it takes a lot of manpower to apply the pulling force all the time, otherwise it will easily lead to safety accidents

Chinese patent application number CN200910193773.5 proposes a hanging-mounted stair transportation device, by installing upper and lower guide rails on the stair railings to hang the hanging basket on the guide rails to transport goods, and the goods are transported through the motor and rack and pinion structure , can effectively control the conveying speed, but the transportation device has too many changes to the stairwell, and rack guide rails or pulley ropes need to be installed, which not only affects the original function of the stair handrails but also increases the application cost, and also uses motors and controllers and other components to control, increasing the complexity and weight of the device

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