CN2168780Y

CN2168780Y - Folding barrow capacity of moving on ground and stairs

Info

Publication number: CN2168780Y
Application number: CN 92225051
Authority: CN
Inventors: 叶永汉
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-06-16
Filing date: 1992-06-16
Publication date: 1994-06-15
Anticipated expiration: 2002-06-16

Abstract

The utility model relates to a barrow, particularly a folding multipurpose barrow capable of moving on flat ground and going stairs. The back frame of the utility model is provided with a rod connecting mechanism whose lifting can be adjusted, a tension spring, and a shaft seat of a rocking rod. A rocking arm is driven to rotate by the lifting of the rod connecting mechanism and then the lifting of the small wheel of an extending arm is adjusted, and the big wheel and the small wheel at the same direction are alternatively contacted with the stair surface when the utility model goes up stairs; the tension spring is connected with the rocking arm to substitute the rod connecting mechanism, and thus the small wheel of the extending arm is operated to perform the fixed falling state when the utility model goes down stairs. The utility model can be used as a four-wheel barrow when the small wheels of the utility model are dismounted to be arranged on the front part of the barrow. The utility model can be used as a sleep barrow for babies when a seat frame and a back frame are arranged on the utility model.

Description

Folding barrow capacity of moving on ground and stairs

The utility model relates to a kind of collapsible Deng Lou level land and uses hand barrow more.

The home-use hand barrow of disclosed climbing stairs, great majority are only as loading, act on single, even after changing use into more, as CN2065168U disclosed band stair climbing folding children's and luggage motor moped, still exist when drawing Weight upstairs climbing and require great effort, wheel is to weak points such as the tread clash of stair are big.

The purpose of this utility model is to provide a kind of improved home-use multifunctional trolley, and light laborsaving when this hand barrow draws weight to step on downstairs the building, sound is little, also can work as pony truck on the level land, also can sit for the baby, the use of sleeping.

Solution of the present utility model is: the connecting rod mechanism of scalable lifting is installed in the back of the body frame both sides at the two-wheeled baggage cart, connecting rod mechanism can include rocking bar frame, spring, articulated connecting rod, rocking bar, connecting rod etc., and extension spring and rocker shaft bed are installed in back of the body lower end, frame both sides.The rocking arm that one end and connecting rod are connected, the other end is equipped with chain along the axis hole both sides is fixed on the rocker shaft bed by the spiral shell axle,, drives rocking arm and rotate along with the lifting of connecting rod mechanism.Be connected on extension arm axis hole both sides after the rocking arm chain is cross-shaped.The extension arm shaft hole sleeve is on dolly bull wheel axletree, and along with the intersection pulling of two chains, the extension arm that small wheels is housed is done dipping and heaving.The length of prolonging between the sharp arm size two-wheeled axis hole equals big steamboat radius sum separately.

Another solution is: rocking arm and connecting rod connection place are detouchables, when replacing the link rob upper rocker arm with extension spring, and under the effect of extension spring, the decline shape that fixes of the steamboat on the extension arm.

In order to enlarge the purposes of the utility model dolly, extension arm can be made up of two parts, and can separate.

The hand barrow that the utility model provides is slept the time spent when sitting as the baby, be on vehicle body supporting plate and back of the body frame, respectively to pacify lastblock detouchable bed course, with do to sit, backrest usefulness, and the activity of installing encloses frame, when the backrest bed course is set level cushion, can be for infant sleep usefulness; When steamboat is pulled down be installed in car before, can make lorry and use.

The hand barrow that the utility model provides makes dolly when last going downstairs owing to adopted the little wheel lifter of may command, and big small wheels alternately advances along the not coplanar rolling of stair, so steadily laborsaving, the collisionless sound, and Halfway Stopping is advanced at any time.Simultaneously, steamboat and bed course are detouchables, make this car have the two-wheeled of work, four-wheel parcel car, and seat, baby are sat multiple use such as sleep.

Below with reference to accompanying drawing the utility model is described in further detail.

Fig. 1 is the lateral plan of a kind of concrete structure of the utility model.

Fig. 2 is the assembling scheme drawing of Fig. 1 connecting rod terminal and wheel.

See figures.1.and.2, include articulated connecting rod 3, the rocking bar 4 of rocking bar frame 1, spring 2 regulation and control, the connecting rod mechanism of connecting rod 5 is mounted on the back of the body frame 8, connecting rod 5 ends are porose, and to be inserted in rocking arm 9A axle, 8 liang of side lower parts of back of the body frame also are equipped with extension spring 6 and rocker shaft bed 7.Being installed in rocking arm 9 on the rocker shaft bed 7 by spiral shell axle 10 is connected to two chain 12, two chains and terminates at the extension arm 13 axis hole both sides of being made up of B, C two parts in addition after cross-shaped along the axis hole both sides.Extension arm 13 is inserted on the axletree 11 with bull wheel 16, and extension arm 13 ends are equipped with steamboat 14 by spiral shell axle 15.Length equals bull wheel 16 and steamboat 14 radius sum separately between 13 liang of axis holes of extension arm.

The support 18, movable railing 19, fore-set 20, spring cushion 21 and the spring back pad 22 that are installed on the supporting plate 17 shown in Figure 1 all are movable, and the time spent can not pull down.

When stepping on the building, on the two-stage step tread, mentioned rocking bar frame 1 this moment, drives whole connecting rod mechanism movement about little big two-wheeled 14,16 rested on respectively, connecting rod 5 rises, drive rocking arm 9 rotational angles, rocking arm 9 is changing angle simultaneously, spurs extension arms 13 to pressing down by chain 12, this moment, the bull wheel 16 edge ladder apprentice faces that rotate on one side rose till rising to tread, rocking bar frame 1 is resetted, and steamboat 14 is gone up the upper class tread again automatically, and circulation is finished and stepped on the building and so forth.

In the time of downstairs, connecting rod 5 is broken away from rocking arm 9A axle, connect extension spring 6 and replace connecting rod 5.Under the effect of extension spring, make steamboat 14 be in the decline state all the time near the stair face, when loaded vehicle is advanced to the stair next stage by extension arm 13, when bull wheel 16 soon leaves tread, steamboat 14 begins to take over bull wheel 16, and under the effect of extension spring 6, makes bull wheel 16 slowly fall to the next stage tread.

When hand barrow movable spring back pad 22 shown in Figure 1 was set level spring cushion 21, this car can be made berch of baby and use; Before being contained in supporting plate 17 after extension arm 13C separated, can making the four-wheel waggon and use; When pulling down parts such as spring cushion 21, spring back pad 22 and movable railing 19, can alleviate complete vehicle weight, make simple baggage car and use.

Claims

1, hand barrow, particularly collapsible Deng Lou uses hand barrow in the level land more, it is characterized in that: the connecting rod mechanism that includes rocking bar frame (1), spring (2), articulated connecting rod (3), rocking bar (4), connecting rod (5) of loading onto the scalable lifting at the back of the body frame (8) of hand barrow, back of the body frame (8) lower end is equipped with extension spring (6) and rocker shaft bed (7), by spiral shell axle (10) rocking arm (9) is fixed on rocker shaft bed (7), extension arm (13) is equipped with in axletree (11) inboard, the outside puts bull wheel (16), and extension arm (13) end in addition is equipped with by the fixing steamboat (14) of spiral shell axle (15).

2, according to the described hand barrow of claim 1, it is characterized in that: extension arm (13) is also detachable in succession by B, C two parts, and the length between its two axle center equals bull wheel (16) and steamboat (14) radius sum separately.

3, according to the described hand barrow of claim 1, it is characterized in that: rocking arm (9) is equipped with chain (12) along the axis hole bilateral symmetry, and chain (12) is done after the cross-like extension arm (13) B axis hole both sides in succession, and rocking arm (9) end in addition is fixed with A axle with holes.

4, according to claim 1,3 described hand barrows, it is characterized in that: connecting rod (5) have can and rocking arm (9) A axle bonded assembly hole.