CN2142090Y

CN2142090Y - Hand-pulling cart capable of travelling up or down stairs

Info

Publication number: CN2142090Y
Application number: CN 92217638
Authority: CN
Inventors: 陈玉侯
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-08-20
Filing date: 1992-08-20
Publication date: 1993-09-15
Anticipated expiration: 2002-08-20

Abstract

The utility model relates to a hand-pulling cart capable of travelling up or down stairs, comprising a vehicle frame, a main shaft and bull wheels of both sides of the main shaft. The utility model is characterized in that main shafts of the outer of two bull wheels are provided with wheel spokes, three spokes are evenly distributed on the wheel spokes, and each spoke is provided with a small wheel. The sum of the length of the wheel spoke and the radius of the small wheel equals the hight of a step generally, the diameter of the small wheel is less than the hight of a step, the radius of the bull wheel equals the difference of the hight of a step and the diameter of the small wheel. The hand-pulling cart capable of travelling up or down stairs has the advantages of simple structure and easy production. The utility model can lightly go upstairs and downstairs steadily carrying heavy, and can also walk on the flat, in particular to pothole rough roads, which is suitable for the use of inhabitants which live buildings.

Description

Hand-pulling cart capable of travelling up or down stairs

The utility model relates to the trailer that a kind of resident of being used for carries daily necessities, particularly a kind of trailer that is used for the building resident toward the energy stair climbing of family carrying daily necessities.

Along with the progress in epoch, resident's house is built higher and higher, yet stays in the resident that building particularly stays in high-rise building, carrying grain, coal briquette, coal gas and heavy furniture etc. feels gruelling, wishes to have a kind of towing dolly, can weight be transported to family easily through stair as walking the level land.

The purpose of this utility model is the trailer that a kind of energy stair climbing will be provided, and when coming carrying heavy goods with it by stair, can weight be towed back in the family as walking the level land pulsation-free, and can go downstairs easily and roll on the level land.

The purpose of this utility model is achieved in that design has the vehicle frame that can put weight on main shaft, design has handle on the vehicle frame, a bull wheel and a spoke are being fixed by the opening latch in the two ends of main shaft, spoke is contained in the bull wheel outside, be uniform-distribution with three width of cloth bars on spoke, a steamboat is being fixed by little axle and opening latch in the top of amplitude.Because the step of stair is generally 150～200mm, so the radius of bull wheel adds the long 150～200mm that also should be of diameter of steamboat, just do not have the phenomenon of beating like this when wheel rolls on stair.

The utility model has the advantages that rational in infrastructurely, easy to manufacture, do not have jump phenomena during stair activity, can compare the upper and lower stair of pulsation-free comparison labour-saving carrying heavy goods or walk the level land and even potholed road.Spoke and steamboat can also be dismantled easily, are convenient to collection.

Accompanying drawing 1 is an integral structure scheme drawing of the present utility model.

Side schematic view when accompanying drawing 2 is the upper and lower stair of the utility model.

Accompanying drawing 3 is the utility model side schematic views when walking on the level land.

Introduce an embodiment of the present utility model below in conjunction with accompanying drawing:

In advance making one with steel pipe or aluminium-alloy pipe has handle and can put the vehicle frame of weight (1), again a metal main shaft (2) is fixed on the vehicle frame (1), respectively be fixed with a bull wheel (3) at the two ends of main shaft (2), be fixed with a spoke (5) that is uniform-distribution with three width of cloth bars (4) in the outside of bull wheel (3), the outermost end design of main shaft (2) has opening latch (6), skids off from main shaft (2) to prevent bull wheel (3) and spoke (5); Top at every width of cloth bar (4), opening latch by a little axle and little axle outer end is fixed with a steamboat (7), because the height on shelves halfpace rank is generally 150mm～200, therefore width of cloth bar on the spoke and steamboat radius sum are greater than or equal 200mm, and the diameter of steamboat (7) must be less than 150mm.Optimum dimension is designed to: the radius of bull wheel is 70～80mm, and the radius of steamboat (7) is about 50～60mm, and width of cloth bar (4) length is 130～140mm.

Claims

1, a kind of trailer of energy stair climbing is made up of the bull wheel at vehicle frame, main shaft and main shaft two ends.It is characterized in that removing on the main shaft and fixing vehicle frame, outside the bull wheel at two ends, also be fixed with the spoke of many width of cloth bars by the opening latch, the top of every width of cloth bar is equipped with steamboat by little axle and spring cotter, pulls out spring cotter and can make steamboat, spoke separate, dismantle with main shaft.

2, trailer according to claim 1, the radius sum that it is characterized in that the length of every width of cloth bar and steamboat is more than or equal to 200mm, and the radius of steamboat is preferably 50～60mm less than 75mm, the radius of bull wheel equals 200 length that deduct little wheel diameter, is preferably 70～80mm.