CN2113924U

CN2113924U - Upstairs crawler handcart

Info

Publication number: CN2113924U
Application number: CN 91216996
Authority: CN
Inventors: 何志刚; 张胜萓
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-06-24
Filing date: 1991-06-24
Publication date: 1992-08-26

Abstract

Disclosed is an upstairs crawler handcart. The utility model is characterized in that utilizing a frame (7), guide wheels (2), (6), a supporting wheel (4) and a caterpillar (5) is arranged nearby wheels of a two wheels traveling cart selling in the market, or a two wheels (or four-wheel) pushing wagon using in shop, factory, storehouse, or a baby carriage, or a gas cylinder cart, which is known as the lower part of a car body.

Description

Upstairs crawler handcart

The utility model belongs to daily living article, be convenient to the resident of building, the goods personnel are removed in shop, factory, warehouse, carry moderate duty article (grain, gaholder, one-tenth case commodity, parts etc.) stair activity easily, also can make things convenient for by train, the passenger of automobile, steamer, aircraft, take thing and pass unimpeded in overline bridge, step path, stair activity (following general designation stair).

Two-wheeled travelling dolly of selling on the market at present or two-wheeled (and four-wheel) push away lorry on slippery traffic surface, walk then can, but when stair activity, fall jumping during through step because of wheel, use is inconvenient.This just forces people when more needing to lighten the load the ground stair activity, can only bear load with the raw mode that hand is carried pickaback on the contrary.

The utility model purpose only near having the travelling dolly now or pushing away the wheel of lorry, is along inclined direction installed guide wheel, support wheel and transmission crawler belt, and crawler belt tiltedly holds in the palm on the flange of step when stair activity, and transmission is continuously served car reposefully continuously or is sent and go downstairs.This structure also can be contained near the wheel that draws coal gas tank car, perambulator, reaches people are lightened the load, and steadily takes the thing stair activity.

Application number is that to propose a kind of structure be that the crawler type that is contained on the axletree is climbed the building device for 87202716 patent utility model " crawler type is climbed the building and pulled baggage car ", usefulness is consistent with the utility model, because of its guide wheel and roller coaxial, diameter is close, cause the huger heaviness of integral structure, in this structure, guide wheel discord roller is coaxial, can do forr a short time.Support wheel and crawler belt are also corresponding to be done forr a short time, and simple in structure light and handy, cost reduces, and uses more convenient.

Accompanying drawing 1 is a side-looking structural representation of the present utility model, and accompanying drawing 2 is the forward view.

In vehicle body (8) bottom, near the roller (1), utilize framework (7) that guide wheel (2), (6) are installed, be used for to crawler belt (5) guiding, the effect of support wheel (4) is to make crawler belt (5) lean to flange (A) some place in step (3), still can keep straight.Steady and smooth during with power of reducing friction and maintenance dolly stair activity.If stairway step is not high, roller (1) is bigger, also can not adorn support wheel.

When dolly is gone upstairs, human pulling force (F) is upwards carried from car handle (K) point, crawler belt (5) rests on (A) point of step (3), be inclination alpha with ground, dolly is a fulcrum with (A), rotates with crawler belt (5), rises slowly along the α angle, roll across (A) point up to roller (1), then the dolly crawler belt rest on again step (3) (B) point continue to climb.Reversed in order when going downstairs, roller (1) can relax reposefully dolly is landed, till roller (1) kiss the earth by (A) point.Stable and continuous lifting when this has just guaranteed the dolly stair activity.

This vehicle structure is simple, can be arbitrarily the steady stair of the various gradients up and down, performance is better than the travelling dolly of selling present market and pushes away goods dolly, perambulator.

A concrete structure of the present utility model is 120 millimeters of roller (1) diameters, and framework (7) is trapezoidal, is welded in vehicle body (8).The vertical pole bottom, guide wheel (2), (6) diameter are the sheave of 30 meters of 40 mm wides, 20 millimeters of groove widths, 5 millimeters of groove depths, support wheel (4) is that diameter is 30 millimeters a garden cylindricality wheel, crawler belt is wide 20 millimeters, and thick 8 millimeters, long 300 millimeters.The extended line and the roller of crawler belt outer rim are tangent, and the angle of this extended line and vehicle body (8) is 10 °.

Claims

1, this crawler type stair climbing dolly is near the roller (1) of common two-wheeled or four-wheel waggon, increase some parts, it is characterized in that: the bottom in vehicle body (8), utilize framework (7), guide wheel (2), (6) are installed, support wheel (4) and crawler belt (5).

2, crawler type stair climbing dolly according to claim 1, it is characterized in that: crawler belt (5) both can be made by metallic material, also can make by plastics, rubber or other non-metallic material, its shape is both level and smooth banded, also triangle band shape, or the level and smooth outer rim convex-concave variation of inner edge is banded, or the hinged band of block.

3, crawler type stair climbing dolly according to claim 1, it is characterized in that: guide wheel (2), (6) and support wheel (4) both can be made halo, also can make sheave, ratchet, but also embedded bearing or can reduce the material of friction of rolling of its axial region position by it.