US2314531A - Tipping mechanism - Google Patents

Description

March 23, 1943.r l.. w..wAcH'r`ER TIEQPING MECHANISM 2 Sheets-Sheet l Filed April 9. 14942 ttor-72635 Mar'ch 23, 1943.

L. w. wAcHjrER TIPPING MEGHANISM .2 sheds-sheet 2 Filed April 9,. 1942 Patented Mar. 23, 1943 rrPPING MEcHANlslvf-` Lester W. Wachter, Streator, Ill., assignor to Anthony Company, Streator, Ill., a corporation ofl Illinois Application April 9, 1942, serial No. 438,227

9 claims. (c1. 298-22) This invention relates to a mechanism for vtipping containers and other articles, and particularly to a mechanism for tipping the material containing part of a dumping body. In the particular form here shown it is adapted for use with a vehicle, automotive or otherwise, but it is not limited to that association and may be used on a foundation of any type, stationary or movable.

, This invention has for one object to provide a dumping, raising, or tipping mechanism of the type indicated, and so arranged as to permit low hydraulic pressures in the moving mechanism.

Another object is to provide a mechanism of the type indicated in which the over-al1 height of the tipping means, and particularly the lever system-embodied therein, is reduced toa minimum.

Another object is to provide such a mechanism so designed and arranged that even for large size bodies adapted to carry heavy loads, there is a minimum of interference with the vehicle structure itself.

Other objects will appear from time to time throughout the specification and claims.

This invention is illustrated more or less diagrammatically in the accompanying drawings,

wherein: l

Figure 1 is a side View of one form of the device.

Figure 2 is a plan view of the lever system of' Figure 1.

Figure 3 is a transverse Vertical cross-section of the hoisting means, taken on an enlarged `scale at line 3 3 of Figure 2, and illustrating -Y such as a motor truck, and the assembly normallyincludes a sub-frame, a pressure cylinder, a pump, a dumping body ypivotally supported in the sub-frame, and a system of levers and links by means of which the lifting or tilting effect of the operation of the piston is communicated to and is made effectiveupon the body to cause it to tip or to move otherwise with relation to the sub-frame.

As shown, the sub-frame comprises side frame v members I, I, which areI joined at their forward l end by across member 2, and which are joined intermediate their ends by cross members 3, and

- are joined at their rear en d by a cross member 4. The particular details of the frame assembly form no essential part of the invention, which may include a variety of different frame con-- structions. It is suflicient furthe purposesof tl1e-invent9nwhat a Sub-treme loe-. Prvidqd which carries the hoisting means and upon which the body or receptacle is itself mounted.

Mounted on the sub-frame is a tilting frame which includes side or longitudinal members 5, 5. which are themselves provided with cross members 6. These latter may be of any desired shape, and may extend laterally beyond the outsides of the members 5. The tilting frame is pivoted in suitable bearings 6a which are supported on the sub-frame and which receive pins or trunnions 'I by means of which the tilting frame is mounted for movement. j

While many diiferent systems may be arranged for moving the linkage to cause tipping, the hydraulic mechanism shown comprises one suitable means. It includes a hydraulic cylinder 8 supported at one end upon a frame 9, which is itself pivoted upon the sub-frame by f trunnions Ill received in suitable bearings supson will not be described in detail. An operating lever I3 is connected with a plunger I4, and by movement of the lever and plunger the control assembly is operated as desired. The pump is provided with a shaft IIa which is arranged to be driven from any suitable source of power. It will ordinarily be drivenby the engine of the automotive vehicle upon which the body is mounted, and it may be driven through a conventional -power vtaker-off with orv without a clutch, as desired. A piston not shown is mounted within the cylinder 8 and is secured to av piston rod I5 which extends outwardly from the cyiinder, and at its outer or free end is secured to a yoke I6. Within this yoke may be mounted ashaft `I'I which extends transversely vof the assembly and is supported in the yoke the members I6 and I'I, together, constituting a cross head. Sub-frame members I8, I8 are secured tothe sub-frame and mayvform part of it. Positioned at eachside of the frame members I8 and supported upon the shaft Il are two links I9, I9. At their upper ends they are supported on the shaft i1, and at ktheir lower ends they rotatably engage pins or trunnions 20, 2|), Awhich are supported at the sides ofthe assembly and at their outer ends are supported in bearings 2|, 2|.v

Positioned upon the shaft I'I and outwardly beyond the members IS are links 22, 22. At their upper ends these links engage the shaft ll and 'at `their lower ends they engage the levers 23, 23.

.The point of connection of the links 22 upon the 1res 23 .is merendine the. elle? ef. the leiter and these levers 23 are pivoted at one end, for example, upon a transverse shaft 24 which is supported upon the side frame members -I of .the sub-frame. The levers 23 extend beyond their point of connection with the links 22 and are rotatably connected at 25 to links 26. Each of these links adjacent its upper end is pivoted as at 2,1

to the tipping frame or to some part xed 'with carrying it out, nevertheless many changes may be made in the size, shape, number and disposition of parts and in the details and steps of "such method without departing from the spirit of my invention. I therefore wish my description and drawings to be taken as in a broad sense illustrative or diagrammatic, rather than as limiting me to my precise showing.

In particular, the structure of the frames may -be largely varied. Generally, of course, the frame construction will be shaped for strength and economy, and to receive the movable part-s which must be carried to complete the linkage and to accomplish its movement. In general, in devices of this ltype a container is mounted on the tipping frame, and it is indicated herewith diagrammatically by the fragmentary side walls 28. The invention may, of course, be embodied in a device which includes merely a tipping platform Without a container, or it may be embodied in a device in which the container is also present.

The invention may be 'embodied in a device in which the ldrivingV means whichfare largely varied, and is not limited to the association with a hydraulic cylinder and associated parts. Any -means which will carry the member I5 in the tipping direction, no matter what its motive power, can

be used to carry out the invention and to make vthe linkage shown satisfactorily operative.

The use and operation of the invention are as follows:

y suining now that the device is mounted on an automotive vehicle which is built about a Aframe and possesses an engine, the device as shown will be assembled upon that fram-e, and

the pump will be yconnected through any desired power take-off means.

With parts as shown in Figure l and in full lines in Figure 3, the pump is operated and :pressure fluid under pressure is forced into the cylinder and carries the piston,

and the piston rod l5, to the right from the position of Figure l toward the dotted line posi- 'tion of Figure 3. As that movement occurs and continues, the levers 23 swing about their l,pivots '24 upwardly and to the right, as shown in Figure 3. l At the same time, the .levers I9 swing upwardly and to the right about their pivots 2D, moving with the levers 23, since the two are linked together by the links 22, and the upper ends of lthese links, as well as the upper ends of to the engine'I f It might, of course, be driven by an `auxiliary engine, but it might be driven by the driving mof- 'tor of the vehicle.

the levers I3, move together, because each of K them is pivoted upon the shaft upon which it moves with the yoke I 5, as the latter moves to the right under the inuence of the piston and the piston rod I5. The lever 23 which is moved 4as just described is connected .to `the tipping frame "or tipping receptacle Iby the links 25, and thus the movement of the links A23 raises the tipping frame. As the movement of the piston rod continues, the member 23 is tilted further,

` and lth'e .body is tilted further until the assembly has been moved from the full line position of Figure 3 to the dotted line position of that gure, and the maximum degree of tip has been obtained.

An important feature of this mechanism lies in the fact that the tilting body or frame is connected to the main tilting levers 23 at a point adjacent their free end, while those levers are -connected to the `cross head assembly, including the .yoke I6 and the member I1 at a point intermediate the ends 'of the levers 23. This arrangement ymakes possible a construction in which ra minimum rof the tilting linkage extends below the sub-frame. This is a vital advantage, because, such devices are generally made up at factories, and the sub-frames with the tilting .frame or container are shipped to a point of use Where they are mounted on a vehicle chassis, and

any .part of the tilting linkage which extends below the bottom line of the sub-frame presents diiculties when this assembly i's to be made. ,It is therefore one of the important objects of this invention to provide a hoisting and tipping linkage which is eiicient, which operates effectively to handle a heavy load with relatively low hydraulic pressures, and which at the same time provides a construction .in which there is substantially no p-art of the tipping linkage eX- tending below the bottom line of the sub-frame. In this connection attention is called to the wood sill 29 which is generally arranged between the upper surface of the vehicle chassis and the lower surface of the sub-frame, and this wood sill, which is customarily used, although it might be omitted, adds to the effective height of the subframe and .removes the portion of the total assembly which extends Abelow the effective bottom surface of the sub-frame. As shown, this includes only a part of the bearings which supports the members I9.

I claim:

A1.. In combination in a tipping mechanism, a base and a receptacle mounted thereon 'for tipping movement with respect thereto, a mechanism including a relatively short link and a relatively long link, the two being separately pivoted on -said base, and a link joining said rst mentioned links pivoted to one of them intermediate itsends, and a fourth link pivoted to the 4free end of said relatively long link, and pivoted to said receptacle, and a power means supported in said `assembly and pivoted to said shorter link, adapted to rotate the saine about its p-ivot point, the remaining links being carried with said rst mentioned iink when rotated by said power means and causing the body to tip.

2. In combination in a tipping assembly, a base, -a receptacle supported therefrom for tipping movement with respect thereto and means 'for 4causing said tipping, said means comprising a yrelatively vlong link pivoted on said base, a second relatively shorter link movably secured vto said base, and a third link joining said links and pivoted, at one of its ends, to the longer link Iat a 4point intermediate the ends of said longer link, and power means supported in said assembly and pivotally connected to said shorter link and effective when operated to rotate the same a-bout its pivot on the base to effect tipping of the receptacle.

3. In combination in a tipping assembly, a base and receptacle mounted thereon for tipping movement with respect thereto, and means for causing said receptacle to tip, said means comprising a pair of relatively short links pivoted upon said base, one adjacent each side thereof, a second pair of relatively longer links, one on each side of said base, a third pair of links, one on each side of said base, each securing one of said longer links to one of said shorter links each of the links of said third pair being movably attached to one of said longer links at a point intermediate the ends of said longer link, a fourth pair of links, one on each side of said base, secured to the free end of said longer link and pivotally mounted on said receptacle, and a power means supported in said assembly and connected to said relatively short links and adapted to cause them to rotate. y

4. In combination, in a tipping assembly, a base, a receptacle supported therefrom for tipping movement with respect thereto and means for causing said tipping, said means comprising a link pivotally mounted upon said base, a second link movably secured to said base and a third link movably joining said rst and second links, said third link, at one end, being movably attached to said second link at a point positioned away from the end of said second link, a fourth link pivotally secured to said second link and to said receptacle, and a power source supported in said assembly and pivotally connected to said iirst link and effective when operated to rotate the same to eiect tipping of the receptacle.

5. In combination in a tipping assembly, a support and a load carrying member mounted upon said support for tipping movement with respect thereto, hydraulic means for tipping said load carrying member, and a linkage adapted to be moved by said hydraulic means to accomplish tipping of the load carrying member, said linkage including a main link pivoted at one end upon said support, and a secondary link shorter than said iirst link, and pivoted upon said support, and a cross head mounted to be moved by said hydraulic means, said secondary link pivoted at one end upon said cross head, and a connecting link pivoted at one end upon said cross head and at the other upon said main link intermediate the ends of said main links, and a fourth link pivoted at one end upon said load carrying member, and at the other upon the free end of said rst link at a position farther from the pivot point of said rst link than the point at which said connecting link is connected to said rst link.

6. In combination 'in a tipping assembly, a support and a load carrying member mounted uponY said support for tipping movement with respect,A

thereto, means for tipping said load carrying member, and a linkage adapted to be moved by said means to accomplish tipping of the load carrying member, said linkage including a pair of main links, each pivoted at one end upon said support, and a pair of secondary links shorter than said rst links, and each pivoted upon said support, and a cross head mounted to be moved by said means, said secondary links pivoted at one end upon said cross head, and a pair of connecting links, each pivoted at one end upon said cross head and at the other upon said main links intermediate the ends of said main'links, and a fourth pair of links, each pivoted at one end upon said load carrying member, and at the other upon the free end oi said first links at a position farther from the pivot point of said first links than the point at which said connecting links are connected to said first links.

7. In combination in a tipping mechanism, a base and a receptacle mounted thereon for tipping movement with respect thereto, a mechanism including a relatively short link and a relatively long link, the two being separately pivoted on said base, and a link joining said first mentioned links :said joining link being movably attached, at one of its ends, to said relatively long link, at a point intermediate the ends of said relatively long link, and a fourth link pivoted to the free end of said relatively long link, and pivoted to said receptacle, and a power means supported in said assembly and pivoted to said shorter link, adapted to rotate the same about its pivot point, the remaining links being carried with said rst mentioned link when rotated by said power means and causing the body t0 tip, said relatively long link having its pivot point positioned away from said power means and having its free end extending toward said power means.

8. In combination in a tipping mechanism, a4

` and secured to the free end of said shorter link,

adapted to rotate the same about its pivot point, the other links being carried with said rst mentioned link when rotated by said power means and causing the body to tip, said relatively long link having its pivot point positioned away from said power means and having its free end extending toward said power means.

9. In combination in a tipping assembly, a support and a load carrying member mounted upon said support for tipping movement with respect thereto, means for tipping said load carrying member, and a linkage adapted to be moved by said means to accomplish tipping of the load carrying member, said linkage including a main link pivoted at one end upon said support, and a secondary link shorter than said first link', and pivoted upcn said support, and a cross head mounted to be moved by said means, said secondary link pivoted at one end upon said cross head, and a connecting link pivoted at one end upon said cross head and at the other upon said main link intermediate the ends or said main link, and

' a fourth link pivoted at one end upon said load carrying member, and at the other upon the free end of said rst link at a position farther from the pivot point of said rst link than the point at which said connecting link is connected to said rst link, said main link having its pivot point positioned away from said tipping means and having its free end extending toward said tipping means.

LESTER W. WACH'IER.

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