Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
  • B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
  • B62B3/08—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor involving tiltably-mounted containers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
  • B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
  • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
  • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
  • B66F9/075—Constructional features or details
  • B66F9/12—Platforms; Forks; Other load supporting or gripping members
  • B66F9/19—Additional means for facilitating unloading

Definitions

• the present invention relates to an improved cart, and particularly to an arrangement in a cart of the kind having a chassis and a storage space and being arranged to be moved with the aid of a transportation means, such as a truck, a crane, or the like, for the purpose of dumping the contents of the cart storage space into for instance a skip-type container.
• a transportation means such as a truck, a crane, or the like
• Carts of this kind are used e.g. within the building industry on building sites where they may be used particularly as carts for waste material.
• the waste- material carts are filled with waste at the building site and when filled they may be transported in any suitable manner to and their contents be dumped in a collection receptacle, such as a waste-material skip-type container known as a skip.
• a prior-art cart for this application is a cart known as a feed cart comprising a storage part which is secured to a chassis.
• the chassis wheel-axle supports two large rubber wheels positioned in a manner ensuring that most of the weight of the fully loaded cart is on the two wheels.
• the cart is also equipped with a smaller wheel of swivel type placed at the rear part of the cart, making the cart easy to maneouvre in narrow spaces, such as corridors, door entrances, and the like.
• a severe dis- advantage inherent in this type of carts is that they are difficult to empty. This is true particularly when their contents are to be dumped into a collection receptacle, such as a skip-type container.
• the dumping operation is effected with the aid of a transportation device, such as a crane, a wheel-mounted fork-lift loader, or with the aid of a truck.
• Dumping with the aid of a crane involves the use of a four-end wire device the wire ends of which are secured in four loops disposed at the upper edge of the cart in the vicinity of the cart corners.
• the cart is then lifted and thereafter lowered into the collection receptacle.
• an operator When the cart reaches the collection receptacle bottom an operator must enter the collection receptacle in order to disconnect the wire ends. All four wire ends must be disconnected, whereupon one of the wire ends must be secured in a lifting hook provided at the smaller wheel of the cart.
• the operator thereafter leaves the collec- tion receptacle, and the cart is lifted with the aid of the crane, causing the cart to automatically dump its contents.
• it is not sufficient to disconnect merely two of the four wire ends that are attached to the upper cart edges, since this will not cause the cart to tilt sufficiently to be completely emptied as it is being lifted while supported from the other two wire ends.
• Dumping with the aid of a wheel-mounted loader of fork-lift type or with the aid of a truck is effected by attaching the four wire ends to the forks of the wheel- mounted loader or truck, an operation which, however, causes the same problem as when a crane is used for the dumping operation.
• the lifting range of wheel-mounted loaders and trucks often is rest ⁇ ced vertically, for which reason it is not unusual that the wire ends must be made to such a short length that the cart cannot be lowered sufficiently far to rest on the bottom face of a collection receptacle, such as a skip- type container, because the fork members abut against the upper edges of the collection receptacle.
• the object of the subject invention thus is to provide a cart that is easy to empty, that is operation ⁇ ally reliable and reduces the amount of manual work required while at the same time it exposes the operator to less risks for personal injuries during the dumping operation.
• Fig. 1 shows one embodiment of a cart according to the invention
• Fig. 2 illustrates the cart of Fig. 1 in a lifted position, with a lever of the cart engaging a collection receptacle, such as a skip-type container,
• Fig. 3 illustrates the manner of unlocking a locking device of the cart of Figs 1-2
• FIG. 4 illustrates the dumping position of the cart of Figs 1-3
• Figs 5-8 are enlarged views of a part of the cart assuming the various positions illustrated in Figs 1-4, and
• Figs 9-12 illustrate the dumping of the cart of Figs 1-8 by means of a transportation device, such as a crane or the like.
• the cart illustrated in Fig. 1 comprises a storage part 1 and a chassis, generally designated by reference 2.
• the chassis 2 comprises a wheel-axle 50 supporting two large rubber wheels 51 the position of which is such as to ensure that most of the weight of a fully loaded cart is on the two wheels.
• the cart also comprises a smaller, swivel-type wheel 52 disposed at the rear part of the cart.
• the chassis 2 is also equipped with means 3 for engagement with a transportation device 4.
• the transportation device 4 comprises fork members and could for instance be a truck or a wheel-mounted fork-lift loader.
• the engagement means 3 consists of two profile members configured to allow reception therein of said fork members.
• the wheels 51, 52 and the engagement means 3 are shown in dashed lines in Figs 1-8. (See also the right- hand part of Fig. 9 wherein the wheels 51, 52 and the engement means 3 are shown in continuous lines) .
• the cart is equipped with a lever 6 which in accordance with the shown embodiment is pivotally connected to the storage part 1 by means of a pivot 7 (see Fig. 5) .
• the pivot 7 is positioned in the area of the front bottom edge of the storage part 1 and preferably essentially midway between the longitudinal edges of the cart, preferably intermediate the profile members forming part of the above-mentioned engagement means 3.
• the lever 6 is pivotally connected to a pusher rod 9 by means of a pivot 8 (see Fig. 5) .
• the pusher rod 9 is formed with a stop mechanism, generally designated 10, comprising a spring means 11 and an end abutment means 12.
• the storage part 1 comprises a stationary member 13, which in accordance with the shown embodiment is formed with an aperture for passage-through of the pusher rod 9.
• the spring means 11 is attached to the end abutment means 12, surrounds the pusher rod 9, and is held between the abutment means 12 and the stationary member 13.
• the cart is formed with a locking mechanism, generally designated by reference 15, which in accordance with the shown embodiment comprises a catch 16 which by means of a hinge mechanism 17 is attached to the storage part 1.
• the catch 16 engages a lug 18 which is rigidly secured to the chassis 2.
• the locking mechanism 15 likewise com ⁇ prises a spring means 19 which is secured to the catch 16 and to the storage part 1, biasing the catch 16 to the latching position thereof.
• the catch 16 is formed with an aperture for passage-through of the pusher rod 9.
• the pusher rod 9 is formed with an outwardly flanged portion 14, for instance in the shape of a bead arranged intermediate the catch 16 and the stationary member 13.
• the catch 16 is formed with a tongue 20 which m the position of Fig. 5 engages a pedal-operated mechanism, generally desig ⁇ nated by 21.
• the pedal-operated mechanism 21 comprises a pedal 22 which is mounted for pivotal movement about a pivot member formed on the chassis 2 and which is connected to a projecting member 24 via a link 23, said member 24, in the position of Fig. 5, engaging the above- mentioned tongue 20.
• the pedal-operated mechanism 21 comprises a spring 25 one end of which is attached to the link 23 and the opposite end of which is attached to the chassis 2, thus biasing the pedal-operated mechanism 21 to a position, illustrated in Fig. 5, wherein said mechanism does not actuate the catch 16 for movement thereof in the unlocking direction.
• the lever 6 comprises a locking device, generally designated by reference 26, which is arranged to secure the lever 6 in a transportation position, illustrated in Fig. 5, wherein the lever 6 is folded inwards, towards the storage part 1.
• the lever 6 likewise is formed with a gripping jaw mechanism 27 positioned in the area of the lever end remote from the pivot 7.
• the cart is primarily arranged to be emptied by dumping of its contents into a collection receptacle, such as a skip-type container 28.
• the dumping function of the cart will be described m the following with reference to Figs 1-8.
• the lever 6 In the starting position, the lever 6 preferably is folded so as to assume its position of transportation and the locking mechanism 15 is in its locking position, as illustrated in Figs 1 and 5. Once the locking device 26 has been released manually or mechanically, the outer end of the lever 6 is pulled downwards, to the position appearing from Figs 2 and 6.
• a transportation device 4 such as a truck, engages the engagement means 3, whereupon the transportation device 4 moves the cart to the position shown in Figs. 2 and 6, wherein the gripping jaw mechanism 27 engages a stationary abutment means 29, in this case formed by the upper frame of the skip-type container 28. Further movement of the cart by means of the transportation device 4 towards the stationary abutment means 29 causes the lever 6 to pivot to the position illustrated m Figs 3 and 7, and consequently the catch 16, when actuated by the outwardly flanged portion 14 of the pusher rod 9, will move to an unlocking or release position, in which the catch 16 may be moved past the lug 18.
• the large front rubber wheels 51 provide a cushioning effect in contact with the bottom of the storage space 1 in said essentially vertical dumping position (see Figs 4 and 8) .
• the contact between the spring means 11 and the stationary member 13 also causes the lever 6 to be urged against the stationary abutment means 29, ensuring safe and continuous engagement of the lever with the stationary abutment means 29 during the dumping movement.
• the cart is moved downwards and/or backwards, the storage part 1 being pivoted back about the hinge 5 to its essentially horizontal position, and the pivotal movement of the storage part 1 to the essentially horizontal position causes the catch 16 to snap into position behind the lug 18, where it is held fast, thus again assuming its locking position.
• the lever 6 may thereafter be shifted to the upwards-folded transportation position shown m Figs 1 and 5.
• the transportation device 4 retains the chassis 2 in an essentially horizontal position during the entire dumping motion of the storage part 1.
• Figs 1-8 also show the pedal-operated mechanism 21 the function of which will be described in the following with reference to these drawing figures.
• the pedal-operated mechanism 21 is arranged to release the locking mechanism 15 independently of the lever 6.
• the operator by depressing the lower part of the pedal 22 of Fig. 5 e.g. by means of his foot, may cause the catch 16 to move to the unlatched or release position illustrated in Fig. 7. This movement may be achieved without the lever 6 contacting a stationary abutment.
• the lever could instead assume its inwards-folded position of transportation, illustrated in the right-hand part of Fig. 5.
• the storage part 1 may be tilted about the hinge 5, e.g. manually with the aid of a handle 30 (see Fig. 1) in order to produce the dumping movement.
• the pedal-operated mechanism 21 Since the pedal-operated mechanism 21 is spring- biased to a position in which it does not affect the locking mechanism for movement thereof in the release direction (see Fig. 5), it is sufficient to release the pressure on the pedal 22 in order for the pedal-operated mechanism 21 to resume its original position.
• the catch 16 When a dumping operation has been effected in the latter manner or with the aid of the lever 6 the catch 16 therefore may lockmgly snap to the position wherein it is held by the lug 18, since the projecting member 24 does not urge the catch 16 to move to its locking position, when the pedal- operated mechanism 21 assumes the original position shown
• the pedal-operated mechanism 21 may be used e.g. when the contents of the storage space 1 are to be emptied from building scaffolding down into a skip-type container.
• the feature allowing the storage part 1 to be locked to the chassis 2 prevents the dumping movement when the lever 6 and/or the pedal-operated mechanism 21 is/are not operated.
• the storage part 1 of the cart is formed with two attachment points 31 and 32, in the form of loops in accordance with the shown embodiment, said attachment points being arranged in spaced apart-positions at a level somewhat below the rear wall of the storage part 1.
• the storage part 1 likewise is formed with a device 33 of a hook- or finger-like configuration disposed at the storage part front wall.
• the hook device 33 preferably is centred laterally on the cart. Preferably, the hook device 33 is slightly angled in the downwards direction.
• the loops 31 and 32 and the hook device 33 preferably are arranged on the external face of the storage part 1.
• a triple-branch lifting device 34 e.g. in the form of a length of wire, is connected to a transportation device of hoisting type, such as a crane or the like (not shown), by means of a wire 35.
• the loops 31 and 32 are e.g. via hook-shaped means (not shown) removably con ⁇ nected to two of the wire-length branches whereas the third wire-length branch is connected to the hook-shaped device 33 via an interconnection member 36, such as a loop.
• the interconnection member 36 preferably is manu- factured from a material having a comparatively heavy dead weight, such as iron. When the cart is lifted, the dead weight of the cart urges the interconnecting member 36 to automatically assume its locked position around the hook-shaped device 33.
• Fig. 10 illustrates the cart in a lifted position. In this position, the locking mechanism 15 assumes its locked position, latching the chassis 2 to the storage part 1.
• Fig. 11 illustrates the manner in which the cart is deposited inside a collection receptacle, such as a skip-type container 28.
• a collection receptacle such as a skip-type container 28.
• the lifting device 34 slackens, the dead weight of the inter ⁇ connection member 36 causes the latter to disengage from the hook-shaped device 33.
• the cart may thereafter be lifted to the position illustrated in Fig. 12 to be emptied, without staff having to enter into the collection receptacle.
• the cart is suspended from the loops 31 and 32.
• the invention provides a cart which is easy to empty, by using either the lever, or the pedal-operated mechanism, or the lifting device.
• the construction of the cart is such that much less manual labour is required for emptying purposes than is the case in the prior art. Owing to the sturdy construction of the cart the latter is also very reliable. Since the manual work to effect dumping is reduced and since dangerous lifts and manual work are eliminated e.g. in the handling of collection receptacles filled with waste, the inventive cart likewise reduces the risks that personal injuries may be incurred in connection with the dumping procedure. It is easily understood that some deviations may be made from the described embodiment. For instance, while being emptied with the aid of the lever 6, the cart need not be lifted. Instead, the cart may be positioned e.g.
• the cart being moved manually or by mechanical means at ground level until the lever comes into contact with a stationary abutment means.
• the stationary abutment means may be formed by any suitable stationary means that is immobile relative to the cart movement.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Transportation (AREA)
• Structural Engineering (AREA)
• Civil Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• Geology (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Handcart (AREA)
• Forklifts And Lifting Vehicles (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=20402808

Family Applications (1)

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• 1996
  • 1996-05-31 SE SE9602137A patent/SE508920C2/sv not_active IP Right Cessation
• 1997
  • 1997-05-29 AU AU31119/97A patent/AU3111997A/en not_active Abandoned
  • 1997-05-29 WO PCT/SE1997/000924 patent/WO1997045361A1/en not_active Application Discontinuation
  • 1997-05-29 EP EP97926330A patent/EP0906242A1/en not_active Withdrawn
• 1998
  • 1998-11-27 NO NO985586A patent/NO985586L/no unknown

Non-Patent Citations (1)

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