CN2207318Y

CN2207318Y - Man-power cart for going upstairs or downstairs

Info

Publication number: CN2207318Y
Application number: CN 94224484
Authority: CN
Inventors: 曾传壁
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-07-20
Filing date: 1994-07-20
Publication date: 1995-09-13
Anticipated expiration: 2004-07-20

Abstract

The utility model relates to a man-power push-pull cart, particularly a man-power push-pull cart which can be used for going upstairs and downstairs and on the flat ground and ramps. The front and the back lower sides of the bottom surface of a bottom frame are respectively provided with a front wheel frame and a back wheel frame, wherein, the front wheel frame is provided with a bearing base of which the top surface is provided with longitudinal slot holes, a front wheel shaft and two front wheels pivoted at both ends of the front wheel shaft. Simultaneously, the back wheel frame is provided with a bearing base of which the top surface is provided with longitudinal slot holes, a back wheel shaft and two back wheels pivoted at both ends of the back wheel shaft. Therefore, the utility model can simultaneously travel on the flat ground, the ramp and go upstairs and downstairs, and the operation of going upstairs and downstairs is labor-saving, stable and convenient.

Description

Man-power cart for going upstairs or downstairs

The utility model relates to a kind of manpower push-and-pull vehicle, especially refers to the manpower push-and-pull vehicle that all can use on upper and lower step and platform, the slope.

At present, common to draw coal gas tank car, travelling (fortune thing) car, wheelchair (seats such as invalid, old man, children) etc. to run into step (stair, crossover-passing, pedestrian underpass and turnover station, shop, recreation ground etc.) quite hard, causes many inconveniences.

In view of this, the purpose of this utility model provides a kind of up/down steps manpower push-and-pull vehicle, with the forward and backward wheel carrier of a determining deviation, adapt with step, constitutes forward and backward two groups four-wheel-type push-and-pull vehicle, and simultaneous adaptation level land, slope and up/down steps travel.

The purpose of this utility model is achieved in that a kind of up/down steps manpower push-and-pull vehicle comprises underframe, handlebar, it is characterized in that: be respectively equipped with front wheel carrier and rear wheel frame below forward and backward in the bottom surface of underframe, wherein front wheel carrier has supporting base, the front wheel spindle of the vertical slotted eye of its end face band and is articulated in two front-wheels at front wheel spindle two ends, simultaneously, rear wheel frame has supporting base, the hind axle of the vertical slotted eye of its end face band and is articulated in two trailing wheels at hind axle two ends.The supporting base end face of above-mentioned rear wheel frame to trailing wheel bottom height greater than the one-level shoulder height.The back wheel diameter sum of the front-wheel of above-mentioned front wheel carrier and rear wheel frame is less than the one-level step width.Above-mentioned front wheel carrier is that detouchable connects with rear wheel frame and being connected of underframe, and the front and back wheel width between centers is in 45～55 centimeters.The preceding wheel diameter of above-mentioned front wheel carrier is greater than the back wheel diameter.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the structural representation of the utility model exemplary embodiments;

Fig. 2 is that the utility model exemplary embodiments is transported the thing view on step;

Fig. 3 is the utility model exemplary embodiments manned view on step.

Among the figure: 1 underframe, 11 hooks, 12 horizontal fulcrums, 2 front wheel carriers, 21 supporting bases, 211 vertical slotted eyes, 22 fronts wheel spindle, 23 front-wheels, 3 rear wheel frames, 31 supporting bases, 311 vertical slotted eyes, 32 hind axles, 33 trailing wheels, 4 handlebars, 5 chair framves, 51 back legs, 52 forelegs.

Present embodiment comprises underframe 1, handlebar 4, front wheel carrier 2 and rear wheel frame 3.

Underframe 1 is by curved group frame under the plane framework of metal pipe frame connection (welding) one-tenth or the leading portion.At this front and back ends coupling hook 11 above underframe 1, be used to hook things such as gaholder, in the middle of underframe 1 above two inboards go back the relative horizontal fulcrum 12 of captive joint.

Front wheel carrier 2 has supporting base 21, front wheel spindle 22 and two front-wheels 23.Supporting base 21 end faces of this front wheel carrier 2 have vertical slotted eye 211, be connected to bolt connection part in the bolt hole of underframe 1 bottom surface, front wheel carrier 2 can be adjusted with vertical connection location of underframe 1, front wheel spindle 22 is fixed in the two side holes of supporting base 21, and its two ends articulates two front-wheel 23(respectively to roll or plain bearing).

Equally, rear wheel frame 3 has supporting base 31, hind axle 32 and two trailing wheels 33.Supporting base 31 end faces of this rear wheel frame 3 have vertical slotted eye 311, be connected to bolt connection part in the bolt hole of underframe 1 bottom surface, rear wheel frame 3 can be adjusted with vertical connection location of underframe 1, hind axle 32 is fixed in the two side holes of supporting base 31, and its two ends articulates two trailing wheel 33(respectively to roll or plain bearing).

If underframe 1 is a plane framework, all (shop, common facilities one-level shoulder height are less than 20 centimeters usually greater than the one-level shoulder height to front-wheel 23 bottom height and supporting base 31 end faces to trailing wheel 33 bottom height for supporting base 21 end faces, residenter house one-level shoulder height is about 16 centimeters, the gradient of general step is 30 °), can not collide step with the underframe 1 that guarantees this car.

If underframe 1 is the curved down group frame of leading portion, as long as supporting base 31 end faces to trailing wheel 33 bottom surface height greater than the one-level shoulder height, the underframe 1 that just can guarantee this car can not bump step, and front-wheel 23 places, cooperates the underframe 1 that guarantees this car can not bump step by the following curved degree of underframe 1 yet.

When the spacing of front-wheel 23 and trailing wheel 33 can be adjusted front-wheel 23 and is in first order step forebody, it is latter half of that trailing wheel 33 is in second stage step, or front-wheel 23 is in the first order step when latter half of, and trailing wheel 23 is in rank forebody behind the third stage.Also must make front and

rear wheel

23,33 diameter sums less than the one-level step width simultaneously, and, the front and back wheel width between centers is limited to (general step is wide 25～30 centimeters) in 45～55 centimeters, and again for the convenience of taking into account on the level land, travel in the slope, front-wheel 23 diameters are greater than trailing wheel 33 diameters.

Handlebar 4 is connected the rear end of underframe 1 with detachable connector, use as pulling dynamic load thing automobile-used (drawing coal gas tank car, este wagon etc.), when placing the wheelchair etc. that excellent frame 5(sits the people on the car) during upper and lower step, for the purpose of the safety of taking the people, handlebar 4 is (go-cart is topped bar, is pulled a cart to get out of a predicament or an embarrassing situation) below step, when on the plane or slope when travelling, also can directly promote backrest, at this moment, handlebar 4 unloads, is inserted into the backrest rear.

Chair frame 5 is articulated in respectively on the two horizontal fulcrums 12 of underframe 1 with two back legs, 51 terminations of its below, seat, and the foreleg 52 of below, seat is supported on underframe 1 end face; Onboard, when getting out of a predicament or an embarrassing situation (seat has the people) because the change foreleg of center of gravity might be unsettled, but the crossing end of seat and backrest is supported on underframe 1 end face.

The operation of present embodiment and principle thereof:

When topping bar, front-wheel 23 is positioned at first order step forebody, trailing wheel 33 is positioned at the second stage step when latter half of, lift handlebar 4, make trailing wheel 33 lift lower edge and the same height of the 3rd utmost point step, spur car simultaneously, it is latter half of to make front-wheel 23 move on to first order step, and this moment, trailing wheel 33 was positioned at third stage step forebody; Delaying unloading lifts front-wheel 23, and lower edge and second stage step be with high, and spurring car simultaneously, to make trailing wheel 33 move on to third stage step latter half of, and this moment, front-wheel 23 was positioned at second stage step forebody.When getting out of a predicament or an embarrassing situation, opposite with said process, so do not give unnecessary details.

In sum, make front and

rear wheel

23,33 for relying on, replace upper and lower step, lift and depress handlebar 4 and all utilize the lever force-saving principle, if for the general-duty este wagon, handlebar 4 length are 140 centimeters, lift, delay unloading 4 o'clock more laborsaving more than 75% than directly lifting car, positive hour hands, inhour upset inclination angle are all less than 15 °, so safety and steady, operation simultaneously is also convenient.

Claims

1, a kind of up/down steps manpower push-and-pull vehicle comprises underframe, handlebar, it is characterized in that: be respectively equipped with front wheel carrier and rear wheel frame below forward and backward in the bottom surface of underframe, wherein front wheel carrier has supporting base, the front wheel spindle of the vertical slotted eye of its end face band and is articulated in two front-wheels at front wheel spindle two ends, simultaneously, rear wheel frame has supporting base, the hind axle of the vertical slotted eye of its end face band and is articulated in two trailing wheels at hind axle two ends.

2,, it is characterized in that by the described up/down steps manpower of claim 1 push-and-pull vehicle: the supporting base end face of above-mentioned rear wheel frame to trailing wheel bottom height greater than the one-level shoulder height.

3, by the described up/down steps manpower of claim 1 push-and-pull vehicle, it is characterized in that: the back wheel diameter sum of the front-wheel of above-mentioned front wheel carrier and rear wheel frame is less than the one-level step width.

4, by the described up/down steps manpower of claim 1 push-and-pull vehicle, it is characterized in that: above-mentioned front wheel carrier is that detouchable connects with rear wheel frame and being connected of underframe, and the front and back wheel width between centers is in 45～55 centimeters.

5, by the described up/down steps manpower of claim 1 push-and-pull vehicle, it is characterized in that: the preceding wheel diameter of above-mentioned front wheel carrier is greater than the back wheel diameter.