CN2229394Y

CN2229394Y - Up-down stairs and land two-purpose hand cart

Info

Publication number: CN2229394Y
Application number: CN 95222680
Authority: CN
Inventors: 高永斌
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-10-10
Filing date: 1995-10-10
Publication date: 1996-06-19
Anticipated expiration: 2005-10-10

Abstract

The utility model belongs to the transport vehicle of handcarts, especially suitable for an up-down stairs and land two-purpose handcart, mainly composed of a horizontal goods frame 2, a vertical goods frame 19, a frame 8, two front wheels 15, two back wheels 4, a sliding plate 1, a single-direction ratchet wheel 5, etc. When the utility model is used for going upstairs, the single-direction ratchet wheel 5 is clamped on the tongue 6 of the ratchet wheel, only the back wheels can move forward, and the wheels can not roll toward the downstairs. When the utility model is used for going downstairs, the sliding plate 1 is opened, the front wheels and the back wheels are parted from the ground and the utility model can slide downward by the sliding plate 1. The utility model overcomes the disadvantage that the existing up-down stairs handcart is unsafe. When the up-down stairs and land two-purpose handcart is used on the flat land, the single-direction ratchet wheel 5 is separated from the tongue 6 of the ratchet wheel, and the utility model can work well depending on the four wheels just like common small-size traveling handcarts. The utility model has the advantages that the up-down stairs and land two-purpose handcart is suitable for transporting the goods going up-down stairs and on the land with saving labor and safety.

Description

Go up the dual-purpose barrow pacifically of going downstairs

The utility model belongs to hand push vehicle transport vehicle, is particularly useful for the hand barrow that stair activity transports goods pacifically.

The hand barrow that travels away from home and use, both collapsible, do not take big quantity space again, very convenient to use, but be only applicable to the plane operation, do not copy goods mechanically and be suitable for stair activity.Going up of selling on the market at present used hand barrow downstairs, is the remodeling of general small-sized transportation with hand barrow, just adjusts the wheelspan of front and back wheel.This car is when going upstairs, because gravity, rear wheel has the possibility of downward rolling, lacks the sense of security.In the time of downstairs, operation downwards fast is not only dangerous but also inconvenient under effect of inertia.

The purpose of this utility model is to develop a kind of trailing wheel not only can be two-way but also but single roll, wheel does not land and relies on stair activity that the bigger cliding friction mode of friction force goes downstairs dual-purpose barrow pacifically when going downstairs.

The purpose of this utility model be achieved in that it by horizontal shelf, vertically shelf, framework, four wheels, handlebars are formed, it is characterized in that each hinged connecting rod of framework inboard on vertical shelf both sides, each hinged slide plate of the other end of each connecting rod.Two trailing wheels are installed a single direction ratchet respectively.

Advantage of the present utility model is that owing on the rear wheel single direction ratchet is installed, in the process of going upstairs, rear wheel is unlikely and retreats, and reaches laborsaving, safe effect.When going downstairs, rely on connecting rod to put down slide plate, make front and back wheel leave stair ground, slide downstairs by slide plate.The friction force that produces because of cliding friction is greater than the wheel rolling friction force, so speed is slower when going downstairs according to the hand barrow of the utility model development, and safety, convenient relatively.When level walking, open ratchet, walk freely the same with general minibus.

Fig. 1, Fig. 2, Fig. 3 have provided specific embodiment of the utility model.

Fig. 1 is a lateral plan of the present utility model.

Fig. 2 is a back view of the present utility model.

Constitution diagram when Fig. 3 goes downstairs for the utility model.

The utility model mainly is made up of the framework 8 of horizontal shelf 2, hard straight shelf 19, fixing vertical shelf 19, two 15, two trailing wheels 4 of front-wheel, single direction ratchet 5, slide plate 1 and connecting rods 3 thereof.Two trailing wheels 4 that are installed on the hind axle 9 are controlled the scroll forward and backward directions with single direction ratchet 5 respectively.When the ratchet tongue 6 on being fixed on crossbeam 14 blocked single direction ratchet 5, trailing wheel 4 can only roll forward, and when ratchet tongue 6 and single direction ratchet 5 were separated, 4 of trailing wheels can the front and back free-flowing.Ratchet tongue 6 relies on line 7 and is fixed on ratchet switch 10 controls at vertical shelf 19 back sides.When going upstairs, move ratchet switch 10 ratchet tongue 6 is stuck on the single direction ratchet 5, then trailing wheel 4 can only roll forward, and is unlikely by gravity to direction rolling downstairs, increases and removes cargo-carrying safety.The two ends of the connecting rod 3 that rigid material is made are connected with framework 8 with slide plate 1 with

axle

16,17 respectively.Downstairs the time, open slide plate by master cock 11, as shown in Figure 3, slide plate 1 is contacted with stair 18, four wheels are all unsettled, rely on the cliding friction between slide plate 1 and the stair 18 to go downstairs.Slide plate 1 can be made with materials such as iron plate, plank, engineering plastics or balata belts.This operation scheme than wheel on stair rolling and big many of the friction force that produces, thereby avoided the operation downwards fast of loading dolly, the person, cargo security when having guaranteed downstairs.

When moving on the level land, ratchet 5 is separated with ratchet tongue 6, and slide plate 1 relies on master cock 11 to be fixed on the framework 8, and front and back wheel then can the front and back walking freely.

A universal hook 12 can be installed on handlebar 13, and hook 12 hangs on the bicycle, by the dilatory dual-purpose barrow pacifically of going up downstairs according to the utility model development of bicycle.

As seen from the above embodiment, under the effect of single direction ratchet 5, can realize the dolly unidirectional operation, open slide plate 1 and can realize the purpose that relies on the cliding friction mode to go downstairs, finish the invention task.

Claims

1, a kind of by horizontal shelf 2, vertically shelf 19, framework 8, two front-wheels 15, two trailing wheels 4, handlebars 13 forms go up the dual-purpose barrow pacifically of going downstairs, it is characterized in that framework 8 inboard each hinged connecting rod 3 on vertical shelf 19 both sides, 1, two trailing wheel 4 of each hinged slide plate of the other end of each connecting rod 3 is installed a single direction ratchet 5 respectively.

2, the dual-purpose barrow pacifically of going up downstairs according to claim 1 is characterized in that installing on the handlebar 13 a universal hook 12.