CN2187129Y

CN2187129Y - Labour-saving cart for travelling up or down a flight of stairs

Info

Publication number: CN2187129Y
Application number: CN 93240033
Authority: CN
Inventors: 高绍纪
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-09-17
Filing date: 1993-09-17
Publication date: 1995-01-11
Anticipated expiration: 2003-09-17

Abstract

The utility model discloses a labour-saving cart for going up or down stairs, belonging to the technical field of machinery. The utility model has the advantages of simple structure, labour-saving and safe use. When the utility model climbs the stairs, a wheel set with five arms naturally climbs the stairs step by step, and thus the stairs can not be damaged. A ratchet wheel is integrated with the wheel set with five arms by a screw bolt. A labour-saving pull handle connected with the pull handle head, a pull rod, and a ratchet wheel set is pulled, and thus the wheel set with five arms climbed upwards. Labour of climbing upwards is saved when the labour-saving pull handle is pulled compared with pulling the cart handle. The ratchet wheel set has the functions of locking and stopping. The wheel set with five arms is prevented from reversing to roll downwards, and safe use is ensured.

Description

Labour-saving cart for travelling up or down a flight of stairs

The utility model relate to article upstairs, carrying problem downstairs, be a kind of resident article upstairs, the labor-saving stair car of going downstairs.

Current, stairs clambing handcart has advanced, also has more original.The extrapolated a kind of remote control ladder creeper-traveler of state is advanced motor-driven remote control ladder creeper-traveler recently, and domestic a long time ago three arms (or the four arms) wheel of also once producing turns over stair climbing vehicle.Motor-driven remote control ladder creeper-traveler is when turning over the cat ladder road, the container of lade can slide into the optimum position on the mill train of arc, make itself to keep horizontality, but this escalator creeper-traveler, the structure more complicated, the price height, general resident does not have purchasing power, and in addition, this car is when creeping ladder access, the corner angle of stair bear the pressure of crawling wheel, can damage stair.Three arms of domestic production (or four arms) wheel turns over stair climbing vehicle, and maximum defective is not laborsaving, and the stair corner angle bear arm and take turns the friction force that turns over when climbing, fragile stair simultaneously.Therefore, no matter be that motor-driven remote control ladder creeper-traveler or three arms (or four arms) wheel turns over stair climbing vehicle and all can not extensively promote the use of in residential building.

The purpose of this utility model is to provide a kind of simple in structure, the stairs clambing handcart that uses article laborsaving, safe and that can not cause stair to damage to go upstairs, go downstairs.

The utility model is supporting vehicle frame (1) by two five arm set of wheels as shown in drawings.Five arm set of wheels mainly are made up of wheel carrier (8), rubber tire fork (10), rubber tire (11), ratchet (5) etc.Rubber tire fork (10) and rubber tire (11) are assembled into the rubber tire group with bearing pin, and the rubber tire group installs on the wheel carrier (8) threadably, after setting needs the length of wheel arm, with jam nut (9) locking.Handlebar two arms of vehicle frame (1) are solid drawn pipe, two arm inboards near handlebar mill out wide 8mm, the groove of long 150mm, two are drawn in the two arm grooves that labour contractor (2) inserts vehicle frame (1), with laborsavingly drawing (3), drawing (pushing away) bar (4), arm of ratchet (7) and ratchet (6) to couple together the laborsaving system of drawing of composition.

Architectural feature of the present utility model is five arm set of wheels and the laborsaving system of drawing that is made up of members such as ratchets.Simple in structure, material is easy to get, and is easily manufactured.The effect of five arm set of wheels is to turn over the stair climbing nature, does not produce restrained force between rubber tire, and stability is good, rolls the component minimum down; The laborsaving system of drawing that members such as ratchet are formed, essence is extending of the laborsaving effect of lever principle, this system plays laborsaving, safe effect.

The new concrete structure of this practicality comprises vehicle frame (1), draws labour contractor (2), laborsavingly draws (3), draws (pushing away) bar (4), ratchet (5), arm of ratchet (7), wheel carrier (8), jam nut (9), rubber tire fork (10), rubber tire (11), axle (12) and nut (13) as shown in drawings.The axle of this device (12) is assemblied on the vehicle frame (1), and two five arm set of wheels are fixed on the axle (12) with nut (13), and the upright support arm of five arm set of wheels can be adjusted according to the size of stair and to be in and the cascaded surface plumbness; When turning over stair climbing, two five arm set of wheels are turned over synchronously and are climbed, if rotation direction is then carried out freely by rubber tire (11) rotation effect.Ratchet (5) is fixed as one with wheel carrier (8), arm of ratchet (7) kink is on the convex shoulder of ratchet (5), ratchet (6) connects with bearing pin and arm of ratchet (7), two by handlebar two arm endoporus are drawn (pushing away) bar (4), one end and arm of ratchet (7) connect, the other end is connected with drawing labour contractor (2), and laborsaving drawing draws (3) labour contractor (2) to be fixed as one with two; Labour-saving car can move forward and backward (3) at the 8mm * 150mm groove between vehicle frame (1) two arm, draw (pushing away) bar (4) that certain rigidity is arranged, draw (3) when pushing away forward when laborsaving, ratchet (6) is in release position, arm of ratchet (7) is swung unfetteredly forward, arm of ratchet (7) has the locking effect that prevents that five arm set of wheels from down rolling when being swung forwards to end position; Draw when the post-tensioning when laborsaving, the diagonal ligament arm gluing wheel (11) of five arm set of wheels upwards turns over five arm set of wheels and climbs as the strong point.

Claims

The labor-saving stair car comprises five arm set of wheels, vehicle frame (8) and a laborsaving system of drawing, it is characterized in that wheel is five arm shapes, the rubber tire (11) that on five arms, has the energy rotation separately, laborsaving drawing is configured in (3) laborsaving the drawing of system on the vehicle frame (1) parallel with handlebar, with two that insert handlebar two arms 8mm * 150mm groove draw labour contractor (2), two arm of ratchet (7) that draw the ratchet group on (pushing away) bar (4) and two the five arm set of wheels by handlebar arm endoporus connect.