US 3148794 A
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Description (OCR text may contain errors)
Sept. 15, 1964 1.. SAUER v 3,148,794
VEHICLE WITH CONTAINER-LIFTING DEVICE Filed Jan. 10, 1961 s Sheets-Sheet 1 025:, ggVENTO/Q BY TTWQS.
Sept. 15, 1964 SAUER VEHICLE WITH CONTAINER-LIFTING DEVICE 3 Sheets-Sheet 2 Filed Jan. 10, 1961 INVENTOR $2M. BY WW Sept. 15, 1964 L. SAUER- 3,148,794
VEHICLE WITH CONTAINER-LIFTING DEVICE Filed Jan. 10, 1961 s Sheets-Sheet 5 VENTOP United States Patent O 3,148,794 VEHICLE WITH CONTAINER-LHTING DEVICE Leo Sauer, Hardthoferweg 1, Schevenhutte uher Eschweiier, Kreis Aachen, Germany Filed Jan. 10, 1961, Ser. No. 81,838 Claims priority, application Germany Jan. 15, 1%!) 1 Claim. (Cl. 214-394) Vehicles for taking up and tilting a container are known in which a lifting arm is hinged to the vehicle frame and at the outer end of which a carrying arm is pivoted, rockable in the same plane, which enables a container to be picked up.
These prior proposals have dealt with comparatively small containers for example dustbins which are to be emptied into a large container carried on the vehicle.
The purpose of the invention is to provide a vehicle which enables large containers in particular for the reception of garbage such as can be used in settlements or factories to be directly set on the vehicle frame and carried over long distances, the size of the container being such as to correspond with the usual containers fixed on vehicle frames. Such a container may have a capacity of four cubic meters or more. At the same time it is made possible for the vehicle with such a container to be driven through the streets as a dustcart and for dustbins to be emptied into the container, the lifting devices for the container being so constructed that it is possible during the passage of the vehicle to tilt the container and thus shift the contents towards one end (suitably the front) so that space is cleared at the other end for the reception of further material. Known devices are provided on the container which enable individual dustbins to be emptied without throwing up dust but which at the same time also make it possible to load bulky goods. In addition the container is to be suitable to receive material which'is shovelled and material which is stacked.
To these ends lifting arms are pivoted on the vehicle frame on either side of the container and carrying arms which can be rocked independently of the lifting arms are pivoted to the free ends of the lifting arms to swing in the same plane as the lifting arms, the carrying arms being provided with holding devices for receiving and holding the container which is preferably of substantially rectangular block form, and controlling its attitude in the plane of swing of the lifting and carrying arms.
Both the lifting arms and the carrying arms can have a length approximately equal to the load length of the vehicle and thus approximately equal to the length of the container.
While the container can be lifted into the vehicle in a substantially horizontal attitude with the above described arrangement of lifting arms and carrying arms, the possibility of operating either pair of arms independently of the other enables the container to be tipped on an axis towards one end to effect the purpose outlined above and compact the contents together.
This is important in the collection of garbage and material which can be shovelled. On the other hand the other pair of arms can be operated alone so that the container can be tipped the other way and thus be emptied through the door opening through which it was filled.
In general the arms will be disposed longitudinally and oppositely directed so that the tipping actions will be about transverse axes, the former to compact the material towards the front end and the latter to empty the container rearwardly.
In order to keep the length of the lifting and carrying arms as short as possible and to save height it is advisable either to terminate the vehicle frame short of the container with the lifting arms extending rearwardly and the carrying arms forwardly or more simply to construct it as a frame open at the rear with the lifting arms extending forwardly and the carrying arms rearwardly. Then the resulting forked frame can be run backwards to embrace the container while it is standing on the ground and the latter then be lifted, it being a pre-requisite that the vehicle has no rear axle extending right across but has the wheels independently mounted. The vehicle can be driven either by means of a separate Cardan shaft for each rear wheel, the differential gear being arranged under or just behind the drivers cab, or entirely through the front wheels.
Further features of the invention will be pointed out in the following description of an example of embodiment diagrammatically illustrated in the accompanying drawings.
FIGURE 1 is a side view of a vehicle according to the invention with the container standing on the ground.
FIGURE 1a is a fragmentary perspective view of a receptacle receiving flap mounted on the rear of the container.
FIGURE 2 is a side view of the rear part of the vehicle with the container lifted.
FIGURE 3 is a perspective view of the container.
FIGURE 4 is a detail of the container on an enlarged soa e.
FIGURE 5 is a view partly in vertical section and partly in elevation through the cross member, further cylinder, the channel bars, and the angle bars on the container, in which the channel bars engage the angle bars.
FIGURE 6 is a view similar to FIGURE 5 in which the channel bars are disengaged from the angle bars, and
FIGURE 7 is a view partly in elevation and partly in cross section taken at to the components illustrated in FIGURE 5. i
The vehicle framework It as FIGURE 3 shows is of forked form and open towards the rear. On the rear ends of the limbs 11 and 12 of the frame are steps 13 for attendants travelling on the vehicle. The rear ends of the limbs 11 and 12 are carried upwardly and have bearings 14- each for a forwardly extending swinging, lifting arm 15 which can be rocked by the aid of a pressure fluid cylinder 16, conveniently a hydraulic cylinder, and the length of which corresponds approximately to the load length of the vehicle. To the free ends 17 of these lifting arms are pivoted rearwardly extending carrying amns 18, both the lifting arms and the carrying arms being so angled that the former lie more or less midway between the carrying arms which are above, and the limbs of the vehicle frame. The carrying arms can be rocked in relation to the lifting arms by the aid of cylinders 19 which engage between the lifting arms and the carrying arms. The length of the carrying arms correspond to that of the lifting arms and is thus approximately equal to the load length. At the center of the carrying arms a cross member 20 located above the container, unites the arms and provides stiffness in torsion. On the cross member 20 is arranged a further cylinder 21 (FIGURE 3) which operates by means not shown, a spreading device consisting in this example of two channel bars 23 arranged on either side of the vertical transverse midplane with their webs vertical and with their flanges directed outwardly, their upper flanges being pivoted at 22 to the cross member 20. The lower flanges engage under the inwardly directed horizontal flanges of angle bars 24 on the container 25, which are particularly clearly shown in FIG- URE 4. This arrangement not only supports the container from the carrying arms but also, prevents the container from tipping in the longitudinal plane in relation to the carrying arms so that the movements ofthe arms control not only the level of the container but also its attitude and enable it to be tipped forward or backward by appropriate operation of the lifting and carrying arms.
At the free end of one of the carrying arms 18 a cylinder 26 is provided which can rock a flap 27 which closes an opening 29 provided in the upper part of the rear wall 28 of the container 25 (FIGURE 4), this opening also being closable by a door 30 but which when the container is lifted for carrying away can be swung downwardly. The opening 29 is closed by the door 30 when the container is not on the vehicle but has been set down say in a position for use on the ground. Bulky goods for which the dust free charging opening described below would be too small can be put in through this opening 29. Also with the flap 27 open, material which can be shovelled such as leaves, saw-dust or the like can be put into the container. The container 25 is of rectangular block form so that a number of containers can be conveniently stacked one on another which can be effected for example by the aid of the vehicle itself, the containers of an upper row being staggered in relation to those below and all the containers being spaced so that the angle bars 24 do not hinder satisfactory stacking.
The flap 27 has known devices shown in FIGURE 1a for receiving and dust-free emptying of dustbins. The opening 29 is in the upper part of the rear wall and at such a height that children cannot be burdened with the task of carrying garbage for emptying. The door 30 has small for example circular openings which are sufiiciently large to enable garbage to be emptied in through them and which can be closed by covers which can be held closed or open at will by means of spring or rubber catches, not shown.
The whole rear wall 28 can be pivoted at will about its upper edge 31 or its lower edge 32 and on both edges is provided with bolts 33 which are shown on a larger scale in FIGURE and which at will can function as bolts or as hinges, in order to enable the whole wall to be moved out of the way, for example for sack trolleys to be run into the container and the container to be loaded with stacked material or toenab-leathe container to be emptied and cleansed. On the flap 27 two hooks 33 are pivoted which as FlGURE 2 shows can be engaged in corresponding eyes on the rear wall 28 so that the latter can be lifted, in order by operating only the cylinder 16 and thus operating only the lifting arms 15, to empty the container rearwardly.
It will be seen from FIGURE 5, the manner in which the channel bars 23 which constitute part of the spreading devices, engage the angle bars 24 on the container 23 when the container is in a position to be transported from one place to another. FIGURE 6 illustrates the position which the channel bars 23 occupy when such bars are withdrawn from engagement with the angle bars to release the container 25.
More particularly, FIGURES 5-7 illustrate the further cylinder 21 provided with piston rod 34 and the spreading devices. The spreading devices are defined by two levers 35 and 35' which are pivoted to the respective channel bars 23 at one of their ends and a bell crank lever 36 is pivoted as shown at 37 to the cross member 29 and cooperates with the piston rod 34 and the levers 35 and 35'. A recuper-ator spring 33 is provided between the levers 35 and 35', as clearly illustrated in FIGURES S and 6.
A vehicle adapted to pick up, transport, tilt and deposit containers compnising a generally U-shaped frame including a pair of spaced rearwardly extending frame members, a pair of lifting arms each pivotally connected at one end to the free end of each of said frame members, a pair of carrying arms each pivotally connected at one end to the free end of each of said lifting arms, means mounted on said carrying arms adapted to removably hold a container positioned between said rearwardly extending frame members, first fluid motor means to pivot said lifting arms relative to said vehicle frame, and second fluid motor means to pivot said carrying arms relative to said lifting arms and said vehicle frame, said container being receivable between said pair of spaced rearwardly extending frame members, angle bar members secured to said container, said holding means operable to removably engage said angle bar members whereby said container is lifted when said lifting arms are pivoted relative to said frame and when said carrying arms are pivoted relative to said lifting arms.
References Cited in the file of this patent UNITED STATES PATENTS 2,547,269 Kinsey Apr. 3, 1951 2,606,674 Edwards Aug. 12, 1952 2,672,247 Iewett Mar. 16, 1954 2,693,288 Black Nov. 2, 1954 2,934,228 Hillberg Apr. 26, 1960 2,963,185 Jones -n Dec. 6, 1960 3,024,931 Grover Mar. 13, 1962