CN2127368Y

CN2127368Y - Load stairs-climbing cart

Info

Publication number: CN2127368Y
Application number: CN 92225018
Authority: CN
Inventors: 孙学俭; 俞建荣
Original assignee: BEIJING PETRO-CHEMICAL INDUSTRY PROFESSIONAL SCHOOL
Current assignee: BEIJING PETRO-CHEMICAL INDUSTRY PROFESSIONAL SCHOOL
Priority date: 1992-06-20
Filing date: 1992-06-20
Publication date: 1993-02-24
Anticipated expiration: 2002-06-20

Abstract

The utility model relates to a load stairs-climbing cart, comprising a cart frame and cart wheels, wherein, the cart wheels are composed of a cart frame holder and roundlet wheels, the cart frame holder is provided with 4-6 pieces of involute salient one end of each of the salient is provided with a roundlet wheels. The utility model is characterized in that the stairs-climbing cart parallel rise with stairs when go up stairs. Compared with the prior art, the utility model has the advantages that size is small, weight is light, vibratory is small, noise is low, cart is steady, labor is saved, the cart can climb stairs as well as walk in flat ground, various dimensional stairs is suitable.

Description

Load stairs-climbing cart

The utility model loading cart for travelling up or down stairs, it relates to the dolly that a kind of hand-propelled vehicle, particularly loading are climbed the building.

That has invented at present climbs the building dolly, its essential structure is to have star gear, although its structure is different with shape, but its total shortcoming except that structure than the complexity, because dolly all is non-linear along stairs climbing, vibrate greatly so jolt when climbing the building, require great effort, have noise,, do not reach damping effect yet though the dolly that has adds spring.

For overcoming the shortcoming that prior art exists, the utility model provides a kind of building hour wheel subcenter is done motion of translation along stair parallax parallel direction loading cart for travelling up or down stairs of climbing.

The purpose of this utility model reaches by following measure: the loading cart for travelling up or down stairs that is made of vehicle frame and wheel, its wheel is made up of wheel retainer and roundlet wheel, the profile of wheel retainer is made up of 4～6 salient angles that involute forms, at the end of each salient angle installing roundlet wheel, the center of circle of roundlet wheel is positioned on the symmetrical center line of salient angle, and the distance at the center of circle to the wheel retainer center of roundlet wheel equals the radius value that the salient angle maximum radius deducts the roundlet wheel.Two wheel retainers are installed in the vehicle frame both sides respectively, and both climbing stairs also can be walked on the level land.

Description of drawings is as follows:

Fig. 1 is blue gas or gaholder cart for travelling up or down stairs block diagram

Fig. 2 is blue gas or gaholder cart for travelling up or down stairs lateral plan

Fig. 3 is blue gas or gaholder cart for travelling up or down stairs birds-eye view

1-vehicle frame 2-roundlet wheel 3-wheel retainer among the above figure

Below in conjunction with drawings and Examples the utility model is further described:

Embodiment 1: referring to Fig. 1, Fig. 2 and Fig. 3, the loading cart for travelling up or down stairs comprises vehicle frame and wheel, the wheel of vehicle frame (1) both sides is made up of roundlet wheel (2) and wheel retainer (3), wheel retainer (3) has 4～6 salient angles, its profile is to be that two involutes of Rb constitute by radius, and two involute directions are opposite and be symmetrical in a line of centers.Each salient angle end installing roundlet wheel (2), its center of circle is positioned on the symmetrical center line of salient angle, the distance at the center of circle to wheel retainer (3) center of roundlet wheel (2) equals the radius value that salient angle maximum radius Rb deducts roundlet wheel (2), with guarantee when cart for travelling up or down stairs during along level walking its wheel retainer (3) do not wipe ground and be as the criterion.Wheel retainer (3) can be made hollow, and available metal material or rigid plastic are manufactured.

Annotate: involute is a kind of like this curve: if promptly a lines tension that is around on certain circumference, launch then, it launches the terminal geometric locus of describing and is involute.

Embodiment 2: vehicle frame (1) can be made needed structure of other article of carrying and shape.

The utility model compared with prior art has the following advantages:

(1) volume is little, in light weight, vibration is little, noise is low, it is steady, laborsaving to climb the building;

(2) be that climbing stairs also can directly be walked on the level land, needn't use transfer device;

(3) be applicable to the stair of different size.

Claims

1, a kind of loading cart for travelling up or down stairs, it comprises vehicle frame and wheel, it is characterized in that wheel is taken turns (2) by roundlet and wheel retainer (3) is formed, wheel retainer (3) has 4～6 salient angles, each salient angle end installing roundlet wheel (2), two wheel retainers (3) are contained in the both sides of vehicle frame (1) respectively.

2, loading cart for travelling up or down stairs according to claim 1, each the salient angle profile that it is characterized in that wheel retainer (3) are to be that two involutes of Rb constitute by radius, and two involute directions are opposite and be symmetrical in a line of centers.

3, loading cart for travelling up or down stairs according to claim 1, the center of circle that it is characterized in that roundlet wheel (2) is positioned on the symmetrical center line of salient angle, and the distance at the center of circle to wheel retainer (3) center of roundlet wheel (2) equals the radius value that salient angle maximum radius Rb deducts roundlet wheel (2).