CN2043202U - Multipurpose dual-purpose handcart for stairs and level ground - Google Patents

Abstract

The utility model discloses a multipurpose handcart for stairs and flat ground dual use. The multipurpose handcart goes upstairs with labor saving by utilizing the unidirectional overturn of two tribrachia-shaped wheels with casters and on both sides of the cart frame, and goes downstairs by relieving the unidirectional brake state of the tribrachia-shaped wheels and the automatic unidirectional braking of the casters by a unidirectional brake block of the casters arranged on a wheel arm to prevent the casters from slippage. The position of the casters on the wheel arm is adjustable to fit for the steps of different dimensions. By making the movable frame vertically stand and adapted with the cloth matched with the cart, the utility model becomes a sleeper coach for baby or a loading cart. By making the foldable handle bar in horizontal position and arranging a flat plate on the handle bar, the utility model becomes a movable type tea table or a television cabinet.

Description

Multipurpose dual-purpose handcart for stairs and level ground

The utility model is a kind of hand barrow, particularly high-mobility, multipurpose, wheeled vehicle stair level land dual-purpose barrow.

Existing hand push load-carrying vehicle, hand push stroller, function singleness, Occupation coefficient is not high in daily life, can only folding storage after using up, become burden.Not only also there is above-mentioned shortcoming in existing stairs and flat land dual purpose hand barrow, also because be or adopt M/C to make dolly upstairs, under the many situations of the high numbers of steps in building, is still very effort, and simultaneously upstairs the time, car is last, and the people is down, inadequately safety; Or adopt cross wheel upstairs (as Chinese patent 85201799), the wheeled cart for travelling up or down stairs of this cross differs for width, the various steps that height does not wait lack random adaptation, can not adjust to changed conditions, particularly wide on the plane, during highly low stair up/down steps, because the certain inadequately squareness of cross wheel arm, castor is easy to roll forward and skids and the cross wheel carrier is not overturn, and dolly is great-jump-forward ground downstairs, thereby steady inadequately.

Task of the present utility model is: 1. improve the value of service of hand barrow, make hand barrow whenever all can be in the state of being used in daily life.2. the random adaptation ability of the step that when the raising hand barrow is climbed the building various width is just differed.3. more steady safer when making the hand barrow stair activity.

Task of the present utility model is finished like this: 1. see among Fig. 1 shown in the dotted portion, handlebar 1 folding back is parallel to the ground, dull and stereotyped 3 are installed on the flat handlebar 1 that crouches, dull and stereotyped 4 are installed on the movable frame 5, hand barrow has just become double-deck tea table of a packaged type or cabinet for television set like this, (see Fig. 2, Fig. 3), unload dull and stereotyped 3,4, with handlebar 1 vertically and fix its position, movable frame 5 is vertically dug and is fixed its position, mixes the cloth that stretches tight accordingly, just can form baby's sleeper coach respectively, if with stretching tight cloth all around movable frame 5, load-carrying vehicle.The combination of cloth and handlebar 1, vehicle frame 2 of stretching tight can also become seat.Movable frame 5 being turned up to vehicle frame 2 set level, promptly is a load-carrying vehicle that can carry larger object.Meanwhile, it is again a stairs and flat land dual purpose hand barrow that dependence three arms abnormity wheel 6 rolls and upward goes downstairs.Hand barrow is served many purposes, whenever all can be in the state of being used in daily life, improved value of service.2. the utility model adopts three arms abnormity wheel, 6 stair activities of arm end foot wheel 6a, as the manpower cart for travelling up or down stairs, the effect of three arms abnormity wheel is identical with the cross wheel, but having saved an arm one takes turns, decision is the length of three wheel arm 6b to the adaptive capacity of various different size steps, so the distance that castor 6a and three arms abnormity are taken turns between 6 axle center is adjustable.A kind of scheme is: but take turns all fore-and-aft adjustments of the position of the terminal caster wheel 6a of arm 6b on wheel arm 6b separately, according to test, as the long 250mm of wheel arm 6b, castor 6a on wheel arm 6b before and after adjusting range when being 75mm, can make three arms abnormity wheel 6 adapt to greatly wide low or high narrow type to 350mmX100mm to the wide and high step that all reaches 300mm, little step to 180mmX150mm, general common step is all included.Because the outer end of wheel arm 6b can not be stretched out outside the wheel edge of castor 6a, so setting range can only be in the radius length of castor 6a, maximum setting range is subjected to the restriction in the wheel footpath of castor 6a.But this scenario-frame is simple, is very suitable under the situation of having determined certain setting range.Second kind of scheme is: wheel arm 6b is divided into the mutual intussusception (see figure 8) of two-section, takes turns arm 6b like this with regard to scalable adjusting length.The setting range of this scheme is not subjected to the restriction in the wheel footpath of castor 6a, and setting range is greater than above-mentioned a kind of scheme, and is easy to adjust.Improved when hand barrow is climbed the building the ability of adjusting to changed conditions like this to various step.3. the utility model adopt to be held handlebar 1 and pushing away on the mode that handlebar 1 goes downstairs (see figure 2) downstairs upstairs, and the people is last, and car is down, compared with adopting the stairs and flat land dual purpose car of going downstairs on the mode in contrast to this to want safety.In the time of upstairs, three arms abnormity wheel 6 adopts the method for one-way brakes, make hand barrow only on not (shown in the direction of arrow among Fig. 2 a) down, therefore can pause so not only laborsaving but also safety in the way; In the time of downstairs, remove the one-way brake state of three arms abnormity wheel 6, and castor 6a is by unidirectional braking (see among Fig. 2 b shown in----X symbol), force three arms abnormity wheel 6 step by step to next step direction upset, thereby more steady when hand barrow is gone downstairs, this plays an important role for vehicle-mounted baby and shock-sensitive article.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is the lateral plan of high-mobility, multipurpose, wheeled vehicle stair level land dual-purpose barrow.

When being high-mobility, multipurpose, wheeled vehicle stair level land dual-purpose barrow stair activity, Fig. 2 dwindles scheme drawing.

Fig. 3 is the front elevational schematic of movable frame 5 when being in diverse location.

Fig. 4 is that assembly drowing is analysed and observe in track adjusting wheel 9 amplifications.

Fig. 5 is the one-way brake enlarged diagram of three arms abnormity wheel 6.

Fig. 6 is the amplification view of castor unilateral system motion block 11.

Fig. 7 is the action of castor unilateral system motion block 11 and the castor 6a enlarged diagram during diverse location on wheel arm 6b.

Caster wheel 6a when Fig. 8 is second kind of scheme, castor unilateral system motion block 11, wheel arm 6b, the amplification scheme of installation of 6b '.

See Fig. 1, handlebar 1 can be vertically on vehicle frame 2, flatly crouch foldingly, fixes its position by strut bar 7 in the time of vertically; Parallel to the ground during flat crouching, be shelved on the detouchable back-up block 8, dull and stereotyped 3 are installed on the flat handlebar 1 that crouches.

See Fig. 3, movable frame 5 can overturn by inside and outside 180 degree on vehicle frame 2, when movable frame 5 when turning up, on even keel rests on the vehicle frame 2, when movable frame 5 is vertical, it is connect mutually with handlebar 1 and be fixed on its position with having contact with, when the inside down tilt of movable frame 5, dull and stereotyped 4(can be installed on it see Fig. 1).When movable frame 5 is vertical, use the cloth that stretches tight that matches with the utility model can form sitting-lying double-purpose stroller and load-carrying vehicle.

See Fig. 4, the lower end of the both sides front leg strut 2a of vehicle frame 2 is equipped with and can be horizontally rotated, the adjustable track adjusting wheel 9 of height, there is an annular groove 9e on the top of screw rod 9a on the track adjusting wheel 9, be rotary with nut 9b on the screw rod 9a, one location screw 9d is arranged on the nut 9b, screw rod 9a injects in the front leg strut 2a of vehicle frame 2, another fixing screw 9c screws in after front leg strut 2a goes up among several tapped bore 2f any one, its sponson imbeds in the groove 9e than loose ground, make track adjusting wheel 9 unlikely dropping out, screw 9c regulates with the height of adjusting the nut 9b that has been located by screw 9d the back and finishes the high and low position adjustment process of track adjusting wheel 9 on the front leg strut 2a of both sides, the variation when making high and low position and adjust to adapt to castor 6a.

See Fig. 1, the three arms abnormity wheel 6 that can have castor 6a with the arm end that angle is rotated synchronously that is connected by axle 10 is housed on the both sides rear support leg 2b of vehicle frame 2, both sides three arms abnormity wheel 6 is connected with axle 10, the connection of passing the axis hole on the both sides rear support leg 2b of vehicle frame 2 by axle 10 can be rotated both sides three arms abnormity wheel 6 synchronously with angle, and the horizontal surface that makes vehicle frame 2 is on the wheel footpath of three arms abnormity wheel 6, three arms abnormity wheel 6 can be contained in the inboard of rear support leg 2b, also can be contained in the outside (Fig. 1 is contained in the outside).

See Fig. 7, there is several holes 6c outer end on the wheel arm 6b in the radius length that is equivalent to castor 6a, castor 6a mutually connects (see in Fig. 7 abc three kind connection states) by any hole 6c wherein with wheel arm 6b with bolt, and it is parallel that the hand of rotation that connects rear truckle 6a and three arms abnormity are taken turns 6 hand of rotation.There are quantity and the spacing hole 6d identical with hole 6c in inner end by the nearest hole 6c in three arms abnormity wheel, 6 axle center on wheel arm 6b, and castor unilateral system motion block 11 passes wherein any one hole 6d and takes turns arm 6b and connect mutually by bolt.

See Fig. 8, interconnecting between castor 6a and castor unilateral system motion block 11 and wheel arm 6b can also be: wheel arm 6b is divided into two-section, 6b and 6b ', mutual between the two intussusception, wherein a hole 6f is arranged on one section, several holes 6f is arranged on another section, and bolt links the two by these holes 6f, and castor 6a connects with wheel arm 6b mutually with a hole 6c and a hole 6d that castor unilateral system motion block 11 usefulness bolts pass on the wheel arm 6b outer end.

See Fig. 5, there is a Die Scheibenbremse 6e at the place, axle center of three arms abnormity wheel 6, has a upright amesiality inside to have the chute 2c of slide block 2d on the rear support leg 2b of vehicle frame 2.The bottom of slide block 2d is an inclined-plane, the top has hauling rope 2e, slide block 2d glides in chute 2c because of action of gravity, its bottom sticks in the angle of chute 2c and Die Scheibenbremse 6e, the inclined-plane of slide block 2d bottom contacts with Die Scheibenbremse 6e, when Die Scheibenbremse 6e when chute 2c place one side direction rotates, blocked by slide block 2d between chute 2c and the Die Scheibenbremse 6e, three arms abnormity wheel 6 is braked; When Die Scheibenbremse 6e backward rotation, slide block 2d is braked disk 6e jack-up, does not play brake action, three arms abnormity wheel 6 can rotate, and when not needing one-way brake, only needs pull-up hauling rope 2e, slide block 2d is mentioned and fixing getting final product, and this one-way brake mechanism structure is very simple, and braking is reliable.

See Fig. 6, castor unilateral system motion block 11 is made of jointly the equalizing pipe 11b and the balance ball 11c of slipper 11a and closed at both ends, make piece 11a and equalizing pipe 11b makes with the high-strength light material, balance ball 11c makes spheroid with heavy material, balance ball 11c can freely roll in equalizing pipe 11b, castor unilateral system motion block 11 connects into an obtuse angle towards the one side of castor 6a by slipper 11a and equalizing pipe 11b, when castor unilateral system motion block 11 is installed on the wheel arm 6b, the both sides at this obtuse angle unsettled and with castor 6a be in a plane earth across the wheel of castor 6a along last, castor unilateral system motion block 11 usefulness bolts connect with wheel arm 6b greater than bolt hole 11d mutually by diameter, therefore it can do a low-angle swing on wheel arm 6b, and amplitude of fluctuation is just run into the wheel of castor 6a respectively along (shown in Fig. 7 a) in this scope in the end of slipper 11a and the afterbody of equalizing pipe 11b.Rationally cooperate between this three of spacing of the diameter slipper 11a of castor 6a and the length of equalizing pipe 11b and hole 6c and hole 6d, should be able to make castor unilateral system motion block 11 be in position shown in Figure 1, the two castor 6a that land are not braked, see for details shown in Fig. 7 b, when wheel arm 6b is tilted to the right and ground is 30 when spending, balance ball 11c rolls the afterbody to equalizing pipe 11b, the cooperation of the counterweight effect of balance ball 11c and equalizing pipe 11b length, the center of gravity of castor unilateral system motion block 11 is overturn (can install clump weight additional at equalizing pipe 11b afterbody in case of necessity), equalizing pipe 11b afterbody descends, slipper 11a upwarps, and leaves the wheel edge of castor 6a; Shown in goodbye Fig. 7 c, when wheel arm 6b is tilted to the left and ground is 30 when spending, balance ball 11c is in the end by slipper 11a of equalizing pipe 11b, slipper 11a descend and since action of gravity perpendicular to ground and slightly from the wheel edge of castor 6a, make castor 6a be in the critical retardation state and be not braked, therefore when the level land, two land castor 6a all not by unidirectional braking, when hand barrow is got out of a predicament or an embarrassing situation, wheel arm 6b progressively tends to vertical, because slipper 11a is perpendicular to ground, so slipper 11a also progressively runs into the wheel edge of castor 6a, castor 6a is by unidirectional braking (shown in dotted portion among Fig. 7 c), shown in Fig. 7 a, the wheel that vertical and slipper 11a meets castor 6a as wheel arm 6b along the time, equalizing pipe 11b should be in the balance critical conditions.So process is gone round and begun again, castor 6a when getting out of a predicament or an embarrassing situation by unidirectional braking.Because slipper 11a contacts at a certain angle on the wheel edge of castor 6a, so castor 6a is to last rolling, brake action just produces naturally, thereby can reliably brake, this one-way brake mechanism of utilizing the operation of nature power of center of gravity and balance, make the utlity model has castor 6a is not braked on the level land, and when getting out of a predicament or an embarrassing situation the performance of one-way brake automatically.When hand barrow uses on the level land always or goes upstairs, the nut on the bolt of fifth wheel arm 6b and castor unilateral system motion block 11 can be tightened, make castor unilateral system motion block 11 the wheel of not meeting castor 6a along the time the position on be fixed.

Claims (7)

1, by handlebar 1, vehicle frame 2, the arm end has the high-mobility, multipurpose, wheeled vehicle stair level land dual-purpose barrow that the three arms abnormity wheel 6 of castor 6a and track adjusting wheel 9 etc. are formed, it is characterized in that: being equipped with on the vehicle frame 2 can be vertical, the flat folding handlebar 1 that crouches, handlebar 1 vertically can be fixed its position, back, handlebar 1 is flat parallel to the ground when for sleeping in, also be equipped with on the vehicle frame 2 can inside and outside 180 degree upsets movable frame 5, its position can be fixed when movable frame 5 is vertical, the lower end of the both sides front leg strut 2a of vehicle frame 2 is equipped with and can be horizontally rotated, the adjustable track adjusting wheel 9 of height, be equipped with on the both sides rear support leg 2b of vehicle frame 2 by what axle 10 was connected and can have castor 6a and three arms abnormity wheel 6 with the arm end that angle is rotated synchronously, it takes turns the footpath under the horizontal surface of vehicle frame 2, distance between the axle center of castor 6a and three arms abnormity wheel 6 is adjustable, the top towards three arms abnormity wheel, 6 axle center of castor 6a has a castor unilateral system motion block 11 to be installed on the wheel arm 6b, the rotation direction of castor 6a is parallel with three arms abnormity wheel, 6 rotation directions, in addition, there is a Die Scheibenbremse 6e at place, axle center at three arms abnormity wheel 6, have one upright on the rear support leg 2b of vehicle frame 2, amesiality, inside has the chute 2c of slide block 2d.

2, according to claim 1 described high-mobility, multipurpose, wheeled vehicle stair level land dual-purpose barrow, it is characterized in that: on the handlebar 1 during flat crouching detouchable flat board 3 is housed, on the movable frame 5 in vehicle frame 2 during down tilt detouchable flat board 4 is housed.

3, according to claim 1 described high-mobility, multipurpose, wheeled vehicle stair level land dual-purpose barrow, it is characterized in that: track adjusting wheel 9 is inserted in the front leg strut 2a of vehicle frame 2, be rotary with nut 9b on the screw rod 9a of track adjusting wheel 9, have the location spiral shell on the nut 9b and decide 9d, screw rod 9a upper end also has an annular groove 9e, after fixing screw 9c precession front leg strut 2a went up among several tapped bore 2f any one, its sponson is imbedding in the annular groove 9e of pine.

4, according to claim 1 described high-mobility, multipurpose, wheeled vehicle stair level land dual-purpose barrow, it is characterized in that: in the length of suitable castor 6a radius, several holes 6c is arranged on the outer end of the wheel arm 6b of three arms abnormity wheel 6, castor 6a connects with wheel arm 6b by any one hole 6c wherein mutually with bolt, in addition, there is all identical with the hole 6c hole 6d of quantity and spacing inner end at a nearest hole 6c who takes turns the axle center of leaning on three arms abnormity wheel 6 on the arm 6b, castor unilateral system motion block 11 passes wherein by bolt, and any one hole 6d connects mutually with wheel arm 6b, or wheel arm 6b is divided into two-section, 6b and 6b ', mutual between the two intussusception, wherein a hole 6f is arranged on one section, on another joint several holes 6f is arranged, bolt is taken turns arm 6b by these holes 6f with two-section, 6b ' links, and castor 6a connects with wheel arm 6b mutually with a hole 6c and a hole 6d that castor unilateral system motion block 11 usefulness bolts pass on the wheel arm 6b outer end.

5, according to claim 1 described high-mobility, multipurpose, wheeled vehicle stair level land dual-purpose barrow, it is characterized in that: castor unilateral system motion block 11 is made of jointly the equalizing pipe 11b and the balance ball 11c of slipper 11a and closed at both ends, balance ball 11c can freely roll in equalizing pipe 11b, slipper 11a and equalizing pipe 11b connect into an obtuse angle, when castor unilateral system motion block 11 is installed on the wheel arm 6b, the both sides at this obtuse angle be vacantly with castor 6a be in same plane earth across the wheel of castor 6a along last, and can do a low-angle swing.

6, according to claim 1 described high-mobility, multipurpose, wheeled vehicle stair level land dual-purpose barrow, it is characterized in that: the bottom of slide block 2d is an inclined-plane, and when the bottom of slide block 2d at chute 2c, this inclined-plane contacts with Die Scheibenbremse 6e, slide block 2d upper end has a hauling rope 2e, and hauling rope 2e is pulled up its position, back and can fixes.

7, according to claim 1 described high-mobility, multipurpose, wheeled vehicle stair level land dual-purpose barrow, it is characterized in that: the cloth that stretches tight that matches with the utility model can be installed.

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