IL46767A - Method and device for moving an exchangeable platform or a container on to the tipping frame of a lorry trailer or the like and off from it - Google Patents

Abstract

1474322 Container traffic vehicle loading mechanism AUTOLAVA OY 6 March 1975 [19 March 1974] 9410/75 Heading B8Q [Also in Division E] A container transporting vehicle has a tilting platform 2 up which a container or platform 3 can be loaded by a tail 9 preferably in the form of a chain or cable having an engaging element in the form of hook 10 to engage a fastening 14 on the container. The tail 9 is attached to an endless chain 8 driven by an hydraulic motor 5. When drawn fully on to the platform 2 a locking element 19 engages the fastening 14. To unload a container the platform is tilted and by a counter element 11 engaging the element 10 to prevent its movement towards the point of attachment 12 of the tail 9 the chain 8 can push the container 3 off the platform. This pushing action can be used, Fig. 12, to transfer a container 3 on to a trailer of similar height while the platform 2 remains horizontal. The element 10 has supporting rolls which run on the platform 2. [GB1474322A]

Description

»7/ - nana ικ -naa ·¾&· Γ ΚΙΡΡ 7α ίΌη T?m Method and device for moving an exchangeable platform or a container on to the tipping frame of a lorry, trailer, or the like, and off from it Method and device for moving an exchangeable platform or a cont on to the tipping frame of a lorry, trailer, or the like, and off from it.

This invention relates to moving an exchangeable platform or a container to and from the tipping frame, of a lorry, trailer or the . like, the tipping frame being provided with one or several endless chains or cables running around one or several chain or cable wheels arranged at one end of the tipping frame and around one or several wheels arranged at the other end of the tipping frame.

It is previously known to move an exchangeable platform on to a tipping frame by means of two wire drums arranged on the shaft of a hydraulic motor mounted at the front end of the tipping frame, for instance, and by means of two wires running from the drums.

It is also known to use different kinds of travelling claw structures. However, this requires that the tipping frame can be, besides being tilted, also moved down rearwards so far that its rear end contacts the ground oi other' base where the platform or the container lays.

The object of this invention is to provide a simpler and more advantageous method of moving an exchangeable platform or a container, and the method according to the invention is mainly characterized in that the exchangeable platform or the container is pulled on to the tipping frame by means of one or several tails attached from one end to the said endless chain or chains or cable or cables, and provided with an engaging element, such as a hook or the like, at the other, free end, for engaging the platform or the container, and that .the platform oi the container is pushed off from the tipping frame by. means of the engaging element or elements so that the engaging element is prevented from moving towards the fastening point of the tail by means of one or several counter elements mounted preferably \; to the said endless chain or chains or cable or cables* The invention also relates to a device for carrying out the method, and the characteristic features of the device are set forth in claim 2.

When the endless chain of a tipping frame is according to this invention provided with an engaging tail, only a simple fastening element is required in platforms.

As the fastening element or elements are low at the end of a platform, the platform structure is as simple and light as possible.

The device according to the invention makes it possible to engage an disengage a platform without outside help and without the drive leaving the cab. By means of the device according to the invention, * a platform can be pushed' from the tipping frame to a trailer or to a loading bridge. In this case, the platform can be pushed by means of a special pushing bar, arranged at the rear end of the tipping platform, further than by means of the tail only. The engaging element , such as a hook, at the end of the tail is shaped so that it is self-positioning at a certain sideways deviation, and prevents a partial, one-sided engagement if the sideways deviation is too great.

The invention is further illustrated in the following with reference to the accoompanying drawings in which: Figures 1-6 show schematical sides views of a device according to the invention, in different stages of loading when. pulling an exchangeable platform on to. a tipping frame, Figures 7-10 show shematical side views of an engaging element in different stages of engagement to a pulling element at the front section of an exchangeable platform, Figure 11 shows a perspective view of the engaging element and the pulling element at the front section of the exchangeable platform, and Figures 12 and 13 show the moving of an exchangeable platform to a trailer and off from it by means of a device according to the invention.

As shown in Figures 1-6, a tipping frame 2 is arranged on the chassis 1 of a lorry and it can be tilted into a position inclined rearwards by means of cylinder-piston devices 4. A transverse shaft is mounted at the rear ends of the chassis beams 1. Rolls 17 with guiding flanges on their outer edges ara mounted at the ends of the transverse shaft. In the case illustrated, the tipping frame 2 is made fairly narrow. A chain or cable wheel 6 is arranged at the front end of the tipping frame on a transverse shaft driven b a hydraulic motor 5» and a wheel 7 is arranged at the rear end of the tipping frame, and an endless chain or cable 8 is arranged to run around the wheels 6 and 7. A tightening section is arranged at a suitable point on the endless chain or cable 8 for tightening the chain or cable to a suitable tightness. A tail 9 is attached from one end to the chain or cable 8 at point 2 and the other, free end of the ohain or cable is provided with an engaging element 1 0 for engaging an exchangeable platform 3 or a container. A counter element 1 1 , such as a nib or -\ the like, is also mounted on the chain or cable 8 behind the fastening point 1 2 of the tail 9 at a distance substantially corresponding to the length of the tail 9 . When the tail 9 is pulled on to the chain or cable 8, the said counter element 1 1 takes a position against a .corresponding counter surface or element in the engaging element 1 0 so that the movement of the engaging element 1 0 towards the fastening point 1 2 of the tail 9 is prevented.

The tail 9 is formed for instance by two chains or cables side by side with a spacing between them and connected to each other. The cross section of the tail is substantially U-shaped so that the tail stays on the chain or cable 8. Yhen the tail 9 is shaped as described above, the endless chain 8 and the tail 9 are positioned along the same pulling line and the chain 8 and the tail 9 also run on the front chain wheel 6 and on the rear wheel 7 so that the chain and the tail have the same radius.

A preferable engaging element is a hook 1 0 shown' in Figure 1 1 .

The front edge of the hook is provided with a directioning upright wedgelike surface 1 3 · Figure 1 1 also shows the construction of a fastening element 1 4 for the hook 1 0 , located at the lower section of the front edge of the platform '3 . The fastening element 1 4 is formed by two horizontal, preferably round rods 1 5 , parallel to the front edge of the platform 3 and mounted to the ■ front edge of the platform 3 . Between the opposite ends of the rods 'there is a spacing for the directioning section 1 3 of the hook. Preferably the opposite ends of the rods 1 5 are slanted in order to facilitate the positioning of the self-positioning hook into the fastening element H.

It is also possible to arrange two or even more endless parallel chains or cables on the tipping frame 2 , instead of one endless chain 8. A chain or cable can possibly be replaced by some other corresponding endless element. It is also possible to have one or several tails 9 . It should be noted that the number of tails 9 need not be the same as the number of endless chains or cables 8 or the like. For instance, one tail can be connected to two chains. .

Following is a description of the functioning of a device according to the invention.

In Figure 1 , the tipping frame 2 is tilted to an inclined position, and the tail 9 is lowered rearwards down to the ground surface oj* near to it, by means of the endless chain 8. Then the lorry is W' reversed rearwards to that the engaging element 1 0 takes a position in the fastening element 14 in the lower section of the front edge of the platform 3. The positioning of the engaging element 1 0 to the fastening element 14 can best be seen in Figures.7 , 8 and 1 „ In Figure 2 , the engaging element 10 is already engaged, and the hydraulic motor 5 has been started and the platform is being pulled on to the tipping frame by means of the endless chain 8 and the tail 9 .

The front edge of the platform 3 is raised on to the tipping frame 2 supported all the time by the engaging element 1 0 , also when the engaging element 1 0 is turned around the wheel 7 . The platform 3 is resting upon the supporting rolls 1 7 only when the platform is pulled further on to the tipping frame 2 . Due to this, it is not necessary to make the front ends of the bottom beams of the platform curved or shaped otherwise in a certain way. The beams can be cut vertically, for instance, at the front edge of the platform.

The rear end of the platform is provided with rolls 18 for facilitating the pulling of the platform 3 on to the tipping frame 2 .

Figures 9 and 1 0 show the engaging element being turned around the wheel 7 . The engaging element 1 0 is provided with two supporting rolls 16, one on eac side, so that when the exchangeable platform 3 is pulled on to the tipping frame 2 b means of the engaging element 1 0 , the engaging element 10 runs on the tipping frame resting on the supporting rolls 16.

In Figure 4 , the platform 3 is pulled further upwards, and the bottom beams of the platform 3 are now on the supporting rolls 1 7 . In Figure 5 , the platform 3 has been pulled right to the front section of the tipping frame 2 so that the rods 1 5 of the pulling element 1 4 are positioned in a locking element 1 9 . The pulling element of the platform 3 thus acts as a locking element when the platform 3 is on the tipping frame.

The platform 3 is removed from the tipping frame in the order opposite to the above. The tipping frame 2 is first tilted to an inclined position, after which the exchangeable platform 3 is pushed rearwards by means of the hydraulic motor 5 and the endless chain 8.

Claims (8)

The counter element 1 1 , such as a nib or the like, has taken a position in front of the engaging element 1 0 when the platform 3 was pulled on to the tipping f ame. When the platform.3 is being ' removed, the counter element 1 1 pushed the engaging element 1 0 in front of it, and by means of the engaging element, also the platform 3 . It is to be noted that when the platform 3 is being removed < from the tipping frame, the tipping frame has to be sufficiently tilted so that the front edge of the platform is not raised as in Figure 4 but the counter element 1 1 is all the time in a steady contact with the engaging element 1 0. Figures 1*2 and 3 show the exchangeable platform being moved from the tipping frame on to a trailer. The moving is performed in the same way as described above. In the same way, the platform can be moved also on to a loading bridge or other basement. If the platform 3 should be pushed further on the trailer or a loading bridge, this is not possible by means of the tail 9 only. The platform 3 has to be pushed further from the position shown in Figure 1 3 by means of a pushing bar in the rear section of the chassis, for instance. According to the invention, the engaging element is shaped so that when it is turned an angle of 45 - 90°, it is locked in the pulling element in the platform 3 , due to its shape and also the force applied by the weight of the tail against the engaging element. So the engagement element cannot get disengaged from the pulling element H for instance in the situation shown in Figure 4 even if for some reason a pulling force would not be applied to the tail 9. The invention is not restricted to the above embodiment and it may considerably vary in details within the scope of the claims. Claims . WHAT |S CLAIMED IS:

1. . A method for moving an exchangeable platform ( 3 ) or a container to and from the tipping frame ( 2 ) of a lorry, trailer or the like, the said tipping frame ( 2 ) being provided with one or several endless chains or cables (8) running around one or several chain or cable wheels ( 6 ) arranged at one end of the tipping frame and around one or several wheels ( 7 ) arranged at the other end of the tipping frame c h a r a c t e r i z e d in that the exchangeable platform ( 3 ) or the container is pulled on to the tipping. frame ( 2 ) by means of one or several tails (9) attached from one end to the said endless, chain or chains or cable or cables ( 8) , and provided with an engaging 6 46767/2 element (10), such as a hook or the like, at the other, free end, for engaging the platform (3) or the container, and that the platform (3) or the container is pushed off from the tipping frame (2) by means of the engaging element or elements (10) so that the engaging element (10) 1s prevented from moving towards the fastening point (12) of the tall by means of one or several counter elements (11) mounted preferably to the said endless chain or chains or cable or cables (8). 46767 2

2. Apparatus for loading and undloading an exchangeable platform or container (3) on to and off of a tipping frame (2) of a vehicle having an endless element (8), wheels (6, 7) located at each end of the dippin frame (2), the endless element moveably mounted on the said wheels, a flexible elongated element (')) attachable between the endless element (8) and the front end of the platform (3) for pulling the platform, on to the tipping frame (2), a counter element (11) on the endless elem for pushing the. platform off of the tipping frame, c h a r a c t e r i z e d in that the flexible elongated element (9) is fixedly-attached at one end thereof to the endless element (8), the other* end of the elongated element (9) being free and having a hook-like engaging member (10) thereon with self-positioning means for steering the engaging member automatically just under to fastening means ( l4) at the front end of the platform (3) when the vehicle is reversed for fastening the platform and Tor engaging the free end of the elongated element (9) releasably to the platform.

3. Apparatus according to claim 2, c h a r a c t e r i z e d in that the fastening means (1¾) ha.: a hook receiving portion and limiting means, said limiting means being laterally spaced apart to form a space the engaging member (10) comprising at least one laterally spaced a ar hook means and a positioning means (13), the hook means adapted to engage the hook receiving portion, the positioning means (13) adapted to at least partly enter said space whereby lateral movement of tl^e engaging means (10) is restricted.

4. . Apparatus according to claim 3, c h a r a c t e r i z e d in that the fastening means (l^) comprises a pair of horizontal rods (15) which are spaced apart horizontally to form said space, said hook means comprising a pair of hooks spaced apart horizontally and adapted to engaging said pair of rods (15) > said positioning means (13) being formed as a wedge and located between said hooks.

5. Apparatus according to claim 2 comprising a counter element ( 1.1 ) on said endless element (8) and adapted to bear against said plat o m (3) when said platform is on said frame, whereby said counter eletnien'b (11) prevents movement of said engaging element (10) towards said attachment point (12) during removal of said platform (3) from said fj*am 46767 ' 2

6. A device according to claim 4, c h a r a c t e r i z e d in that the engaging member (10) is locked in the fastening means (1; ) in the platform (3) when the engaging member (10) is turned 45 - ¾0° in the vertical plane around the rods (15) of the fastening means (l^),1^

7. A device according to any of claims - 6, c h a r a c t e r i z e in that the engaging member (10) is provided with two supporting foils ( L6 ) , one on each side of the ngaging member (10) so that when the platform (3) or the container is pulled on to the tipping frame (2)- by means of the engaging member (10), the engaging member (10) runs resting on its supporting rolls (16) on the tipping frame (2).

8. A device according to any of claims 2 - 73 c h a r a c t e r t' z e in that the fastening element (14) of the platform (3) acts as a locking element when the platform is on the tipping frame (2). ttorneys for Applicant