Cargo transportation device and method in stairwell

Abstract

The invention discloses a device and method for transporting cargos in a staircase. According to the method, a pedal is pedaled by feet to drive a four-way pipe, a transverse guide rod, a transverse slide block and a vertical limiting rod to vertically move downwards, an ejector rob rotates by taking a fixed pulley as a lever fulcrum, the rear end of the ejector rob jacks up a T-shaped slide block to drive a turnover inner plate to rotate upwards around a rotating shaft so as to be level, and the ejector rob pulls the T-shaped slide block to move forwards in a T-shaped sliding chute; meanwhile, a rotating arm drives a cylinder to rotate to avoid the contact between suspended casters and the ground, and half-cylindrical guide rails on the left and right sides slide on stairs; and a spring lock pin is pulled, the pedal moves up under the action of a vertical spring to return to an initial state, and the casters are in contact with the ground again and are switched into a flat ground transportation mode. According to the device and the method, a connecting rod mechanism is manually driven, the guide rails and the casters are mutually switched so as to be fit with two transportation situations of the stairs and the flat ground, and the cargos can be always kept level and can be smoothly transported on the stairs with different angles.

Description

technical field [0001] The invention belongs to the field of transportation equipment, and relates to a device capable of being transported on stairs and flat ground, specifically, a transport device capable of maintaining the level and reliable transportation of goods and meeting the needs of goods transported on flat ground and stairs respectively. Background technique [0002] There are many middle and low-rise buildings in modern building complexes, which are not equipped with elevators or other manned and cargo-carrying facilities, which makes the handling of heavy objects very troublesome, which is not only labor-intensive and inefficient, such as the transportation of building materials between the upper and lower corridors, furniture handling and Trash bin recycling and cleaning, etc., these daily work places are hindered and cannot meet people's living needs. [0003] Most of the existing solutions for the transportation of goods in stairwells use mechanical structu...

AI Technical Summary

Problems solved by technology

[0002] There are many middle and low-rise buildings in modern building complexes, which are not equipped with elevators or other manned and cargo-carrying facilities, which makes the handling of heavy objects very troublesome, which is not only labor-intensive and inefficient, such as the transportation of building materials between the upper and lower corridors, furniture handling and Trash can recycling and cleaning, etc. These daily work places are hindered and cannot meet people's living needs

[0003] For the transportation of goods in stairwells, most of the existing solutions use mechanical structures such as three-star wheels, chains, and crawlers, which cannot meet the needs of flexibility and load-bearing at the same time, and the structure is complex and the operation is cumbersome.

For example, the Chinese patent application number is CN201420768154.0, which proposes a dual-purpose transport vehicle for flat ground and upstairs and downstairs, which uses two kinds of carrying mechanisms, sled board and wheel, to realize its cargo transportation on the stairs and between the flat ground respectively, but this Neither of the two carrying mechanisms took into account that the inclination angle of the stairs when the goods are transported on 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 truck to maintain stability when transporting on the stairs

Another example is that the Chinese patent application number is CN201510737986.5, which proposes a device for transporting goods in the stairwell. The device uses a hydraulic lifting mechanism to adjust the height of the load-bearing plate bracket according to the inclination angle of different stairs, so that the goods can be transported Maintain a level state at all times, although the influence of the cargo on the load-bearing plate that may be caused by the inclination angle of the stairs is eliminated, the power mechanism adopted by the hydraulic lifting mechanism is too complicated, and it is necessary to install a hydraulic actuator and a hydraulic actuator on the transport device. Mechanisms such as fuel tanks themselves increase the complexity and weight of the transportation device, and at the same time, it is necessary to modify the stairwell and the wall, which is costly

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