US2106123A - Threshing machine frame - Google Patents

Description

J Jan. 18, 1938. H. RAUSSENDORF I THRESHING MACHINE FRAME Filed July 26, 1935 5 Sheets-Sheet l Jan. 18, 1938. H. RAUSSENDORF THRESHING MACHINE FRAME Filed July 26, 19:55: 5 Shets-Sheet 2 Jan. '18, 1938. H. RAUSSENDORF' THRESHING MACHINE FRAME v Filed July 26, 1955 I 5 et 5 Jan. 18, 1938.

H. RAUSSENDORF 'IIHRESHING MACHINE FRAME .5 Sheets-Sheet 4 Filed July 26, 1935 Jan. 18, 1938. H. I QAUSSENDORF THRESHING MACHINE FRAME Filed July 26, 1935 5 Sheets-Sheet 5 Fig. 13

www.- flMM/W 6 4 1 Patented Jan. 18, 1938 means THRESHING MACHINE FRAME Hermann Raussendorf, Saxony, Germany Application July 26, 1935, Serial No. 33,382 In Germany August 25, 1934 1'7 Claims.

This invention relates to frames forthreshing machines in which the frame and supporting beams are constructed of steel.

In the ordinary threshing machines as now made a wood frame is provided resting upon lon- Such press subt the and beams are greatly strained and fail prematurely or become loosened by friction, etc.

Attempts have heretofore been made to overcome these defects by providing the frame housing exteriorly with triangular metal plates in projecting or transverse beams as reinforcements, since it is impossible to provide transverse reinforcements at the interior of the housing with the exception of a few points. It is an object of the present invention to eliminate all the drawbacks inh in constructions of the type mentioned.

Another defect in threshing machine fr as at present made lies in the fact that a erent ames wood frame is subject to a swelling and shrinking in accordance with humidity and other factors and this defect renders such a frame entirely for use in tropical climates and also a frame in such climates would be soon destroyed by termites, etc.

Attempts have been made in View of these conditions to construct a threshing machine frame of metal, particularly sheet metal, but such a construction has been no better than the ordinary wood frames. It is the purpose of the present invention to overcome all of the above named disadvantages of threshing machine constructions.

With respect to the threshing machine fr ames heretofore made of metal, it has been demonstrated in practice that such steel plate fr which are made of relatively weak plate ames and struts, beams or the like in order to reduce the weight, are not sufficient to withstand the great strains which are placed upon them. As the result of the strains to which this sheet metal struction is subjected, the rivet connections and nut and bolt connections, etc. are excessively overloaded and particularly the inner par the threshing machine which are connected ts of with the wood frame are prone to become quickly incapacitated due to the twists and turns to which they are subjected. It is a further object o f the present invention to eliminate all such drawbacks.

In contrast to the constructions heretofore used the present invention proposes a completely new method of constructing a threshing machine frame in that two substantially U-shaped supporting yokes made of section beams, one located near the front and the other near the rear end of the threshing machine, are rigidly connected with a metallic under-frame which is strong enough to withstand the twisting and tortion actions set up. The arms of said U-shaped section beams are extended upwardly and carry the vertical lateral walls of the housing which in turn consist of steel plates passing entirely through and rigidly connected with the section beams.

It is an object of the invention to form a frame having three simple constructional parts, namely the underframe, the U-shaped supporting yokes and the side walls which, being supported by the usual and necessary transverse connections or beams, is completely rigid between the side walls and the construction is such that the underframe completely takes up all the strains which may be exerted upon the frame.

It is an object of the present invention to secure a construction which will permit the relative position of the frame to become changed when the threshing machine is traveling over rough ground or there has been an improper adjustment or alignment of the set up threshing machine. As the result of the construction those parts of the threshing machine located partly in the housing between the side walls and partly upon the side walls are not subject to any strain due to the turning or twisting of the threshing machine.

It is an object of the invention to form the underframe of a seamless drawn steel tube of suitable diameter while the U-shaped supporting yokes are made of section beams assembled from individual suitably bent fiat steel strips.

It is a further object of the invention to provide means connected with the underframe by welding or the like forming a continuation extending along the longitudinal center of the threshing machine frame and in the form of a vertical section beam of sheet steel to which the transverse support on which the straw press frame is mounted may be attached.

A still further object of the invention is to mount the underframe by means of springs on the steel axles and to support it relative to the axle by a centrally mounted buffer spring.

A feature of the invention is to provide a construction whereby all parts of the frame may be interconnected rigidly as for instance by electric welding.

With the above and other objects in view which will become apparent as the description proceeds, a detailed explanation of an exemplary embodiment of the invention is described below and illustrated in the accompanying drawings.

Figure 1 is a lateral elevation of a threshing machine frame,

Figure 2 shows two relatively displaced vertical cross sections,

Figure 3 is a horizontal cross section upon the section line III-III of Figure 2 on an enlarged scale,

Figure 4 is a horizontal cross section on section line IV-IV of Figure 2 upon an enlarged scale,

Figure 5 shows the rear portion of Figure 1 upon an enlarged scale,

Figure 6 is a partial plan view of the parts shown in Figure 5,

Figure '7 is a cross section taken on the section line VIIVII of Figure 6,

Figure 8 is a cross sectional view of a detail taken on the section line XII-XII of Figure 5,

Figure 9 shows another portion of Figure 1 upon an enlarged scale illustrating the connection between the front axle and the metallic underframe upon enlarged scale,

Figure 10 is a side elevation of the View shown in Figure 9 on a somewhat reduced scale and looking in the direction of the arrow shown in Figure 9,

Figure 11 is a side elevation of a portion of Figure 1 on an enlarged scale looking from the rear to the front and with the straw press together with its frame being omitted,

Figure 12 is a plan view of the construction shown in Figure 11 with portions omitted,

Figure 13- is a side view of a portion of the structure shown in Figure 12, and

Figure 14 is a vertical cross section taken on the section line XIV-XIV of Figure 11.

Referring to the drawings, the underframe consists of a seamless drawn steel tube I which is located centrally between the wheels 2 and 3 and extends obliquely to the rear, being inclined at the end of the threshing machine at which the sheet steel frame of a straw press S may be connected with the threshing machine.

The front end of the tube I is mounted oscillatably upon the axle 4 upon which the wheels 2 are journalled. A buffer spring 5 is interposed. The rear end of the tube is supported upon the axle 6 upon which the wheels 3 are mounted and such rear end is resiliently mounted by means of the two sets of leaf springs I.

Rigidly connected with the underframe or tube I are two substantially I-shaped or U-shaped supporting yokes Band 9. The yoke 8 is located near the rear end in the vicinity of the axle 6 and the yoke 9 is provided near the front end in the vicinity of the axle 4. Referring to Figure 3 the supporting yoke 8 isof I-shape cross section. Such cross section is formed by bending the three sheet metal strips, III, II and I 2 to the required yoke form and then welding them together electrically or securing them together by any other desired means. The plates I0 and I2 going from one side of the threshing machine to the other are closely applied to the periphery of the tubular underframe I and are connected therewith by electric welding or otherwise. The web of the I-frame is cut away in the manner shown particularly in Figure 2 so as to abut closely the periphery of the tube I and the Web II is then also secured by any desired means, preferably by electrical welding, to the tube I.

As illustrated in the cross section of the yoke shown in Figure 4 the yoke 9 has a U-shaped cross section which is formed or assembled from three sheet metal strips I3, I l and I5 which are electrically welded together. This cross section then changes into the same I-shaped beam as used in supporting yoke 8 at the lower portion thereof and such construction is made by electrical welding three suitably bent sheet metal strips such as ill, II and I2. In this case also the connection with the underframe or tube I is the same as previously described with reference to the supporting yoke 8.

The two vertical side walls is and ll of the threshing machine frame are rigidly connected by electrical welding or any other desired means with the upwardly extending arms of the yokes 8 and 9. A transverse connection I8 between the two lateral walls having the welded, bent-down edges or flanges I6 and I1 is provided at the only place possible at the front end where the material to be threshed is fed. A transverse connection I9 is also. provided in the vicinity of the concave.

As above described, it is obvious that all the parts of the threshing machine frame consist of sheet steel and are interconnected preferably by electric welding. Any twisting or tortionturn which may arisecan be completely taken up by the underframe I which is sufficiently strong to Withstand the same. Moreover, any tortion strains or twisting strains are substantially lowered or weakened due to the spring 5 and the leaf springs I. It is obvious that therefore due to the construction described the parts of the threshing machine located between the walls I6 and I! of the frame are not effected by the twisting or turning moments since the parallel spacings of the walls I7 and I8 is constantly maintained and ensured.

The walls IB and H are provided with suitably shaped notches, depressions or cut-away portions for suspending the well known spring pins, the springs 2i and 22 of which carry the shaker and the back travel floor. These springs are attached at their upper ends to the projectiohs 23 of an angle bar 24 by bolts or screws and the like. The angle bar 24 is attached by the upper edge exteriorly on the side wall plate I6 and/or H. The shaft 25 of the cylinder 2t cooperating with the concave 28 is mounted in a bearing located in a vertical longitudinal slot of the sup porting yoke 9. It is for this reason that the upper ends of the yoke 9 are made U-shaped.

The wood platform 21' shown in dotted lines upon Figure 2 forms the upper closure of the threshing machine frame. This wood platform may be retained since a metal platform does not provide a sure foothold for the workers and also because this frame is not subject to the strains previously mentioned.

Combined with the threshing machine frame is the metallic straw press frame, themain portion of which forms the passage 29. The assemblage is constructed in the following manner, particular reference being made to Figures 5 to 8 inclusive.

A sheet metal member 39 is provided extending at its end 3| into the tubular underframe I to the inner wall of which it is electrically welded (see particularly Figure 7). The member 30 thus forms a projection or continuation extending along the central longitudinal line of the threshing machine frame. The member 39 is reinforced at its lower edge by an arcuate flange 32 welded to the metal member 39 as shown in Figure 8. At the free end of the member 36 the angle members 33 are attached at both sides by means of welding. These angle members form supporting means for a transverse support 34 which is of U-shape and is secured as by bolts and nuts or by screws to the angle members. Other supports also in the form of welded angle members 35 are provided at about the center of the member 36 at the upper edge thereof. A transversely extending beam 36 in the form of an angle bar or rail is screwed to these supports. The floor 31 of the straw press passage 29 is mounted upon the transverse supports 34 and 36.

A transverse beam or support 38 having a U- shaped cross section is welded to the under side of the steel tube I near the end at which the member 36 is secured. For increased reinforcement the sheet metal members or plates 39 are welded to the tube I and to a flange 40 of these members the transverse support 38 is attached by the screws 4|. Secured to the ends of the transverse support 38 as by welding, are the vertical plates 42 having a flange construction 43. To each one of these plates 42 there is screwed or bolted a buttress-like or strut-like plate 44. The plates 44 extend upwardly and are welded to the corresponding lateral cheeks of the straw press passage 29. As will be noted, the metallic straw press frame is in this manner connected by a simple supporting rib structure with the frame of the threshing machine so that any tortion is precluded. In this construction also all the parts as well as the section beams may if desired be made of steel plates which are welded together. On the underside of the sheet metal extension 30 there is welded an arm 45 having a perforation 46 whereby traction hooks, swingletree hooks or the like may be attached in case the threshing machine-straw press unit is to travel backwards. The spring suspension of the threshing machine frame is constructed in the following manner.

The front axle 4 consists of a box-like housing which is formed by a metal plate 48 with a channel-shaped member 4I. On both sides of this housing the axle spindles 49 for the front wheels 2 are attached by welding. The front axle 4 constructed as a box-like housing above described is engaged at about its central portion by a U-shaped saddle or yoke 56 which is rotatably mounted with respect to the axle 4 by means of the pivot pin I. A tube or bearing 52 is welded in the center of the axle housing 4 and two plates 53 are welded upon the interior faces of the legs of the U-shaped yoke 56 in order to reinforce the bearing points.

Secured by welding to the U-shaped yoke 56 is the pivot pin 54 whose upper end enters a tube 55 which is welded in the steel tube or underframe I which is somewhat flattened at the front end. Surrounding the pivot pin 54 is the conical buffer spring 5 resting upon the disk or plate 56. Interposed between the disk 56 and the U-shaped yoke 56 is the housing member 51 which is shouldered in the manner shown in Figure 9 and secured to the pivot pin 54 by means of the transverse pin 58.

A substantially U-shaped supporting yoke 59 is attached to the underframe I near the location of the pivot pin 5-4. The yoke 59 has a horizontal portion 59 which is reinforced by a plate 66 through which the housing member 51 extends.

The pivot pin 54 therefore serves as the pivot pin for the front axle. A reinforcement plate BI is also provided being welded upon one hand to the underframe I and on the other to the yoke 59.

Bars 62 are welded to the front axle 4 and carry at their free ends a collar-like yoke 63 for inserting a thill, pole, beam or the like. Two V-shaped abutting bars 64 being welded on one hand to the axle 4 and on the other to the yoke 63 serve to reinforce the same.

The rear axle 6 also consists of a box-like housing in the ends of which the axle spindles 65 for the rear wheels 63 are secured as by welding. The supporting yoke 8 disposed above the rear axle 6 is supported by the two sets of leaf springs I which are secured to the yoke 8 by means of the shackle bolts 65. The ends of the leaf springs lie on the box-like housing of the rear axle 6 and are retained in place by the bolts or pins 61 which are inserted through apertures provided in plates 68 which are in turn secured at both sides of the axle housing as shown particularly in Figure 14.

Upon the underframe I in the vicinity of axle 6 to spaced bars 69 are provided which receive the axle housing between them. The bars 69 are preferably secured by welding to the underframe I and are in turn supported. by the two reinforcing plates I6 welded between the bars and the yoke 8. Welded at both sides of the axle housing 6 are two guide members II which are bent convexly relative to the guide bars 69. In this manner there is formed an upwardly and downwardly expanding guide passage for the bars 59 so that the bars 69 in addition to the vertical movement permitted can also have simultaneously a slight oscil lation in a plane perpendicular to and parallel with the axle 6.

In addition, two struts I2 are attached by any desired means such as the screws I3 to the rear axle 6. Welded to the tube I are two spaced bearing plates I4 and I5 between which the connecting member I6 is rotatably mounted by means of a pivot pin 11. The ends of the strut I2 are secured to the connecting member I6 by welding. The bearing plates I4 and I5 are supported by the supporting plates I8 shown particularly in Figure 13 which are welded on one hand to the bearing plates I4 and I5 and on the other hand to the underframe I.

In order that the threshing machine may rest firmly upon the chassis or frame during the threshing Wood edges I9 are driven in between the wheels 3 and the arms of the supporting yoke 8. The wedges are shown in dotted lines in Figure 11. In order to accomplish this purpose bracket members 86 are welded tothe yoke 8. In order when driving in wedges I9 not to exert unnecessary strain on the leaf spring I, the tension screws BI indicated by dotted lines in Figure 11 are first placed between the axle 6 and the yoke 8. For this purpose the yoke is provided with eyelets 82 and flaps 83 are provided upon the plates 68 therebelow, said plates 83 being provided with a perforation for an attaching screw.

I claim:

1. A threshing machine frame comprising a central torque member, substantially integral U- shaped supporting means fixedly secured to said torque member and side walls secured to said U- shapedsupporting means.

2. A threshing machine frame comprising a tubular metallic member, substantially integral U-shaped supporting means fixedly secured to said torque member and side walls secured to said U-shaped supporting means.

3. A threshing 'machine frame comprising a tubular metallic torque member located substantially centrally of the frame, two substantially integral U-shaped supporting metallic yokes mounted upon said torque member, one of said yokes being located near the front of said torque member and the other located near the rear end of said torque member and side walls secured to said supporting yokes.

4. A threshing machine frame comprising a seamless drawn tubular central torque member of sufficient strength to withstand turning moments, substantially integral U-shaped supporting means fixedly secured to said torque member and side walls secured to said supporting means.

5. A threshing machine frame comprising a seamless drawn tubular central torque member of sufficient strength to withstand turning moments, substantially integral U-shaped sup porting means fixedly secured to said torque member and side walls secured to said supporting means, said U-shaped supporting means being formed from flat metallic strips.

6. A threshing machine frame comprising a central torque member, substantially integral U- shaped supporting means fixedly secured to said torque member, side walls secured to said U- shaped supporting means and resilient means supporting said torque member from the axles of the threshing machine.

'7. A threshing machine frame comprising a central torque member, substantially integral U- shaped supporting means fixedly secured to said torque member, side walls secured to said U- shaped supporting means, a plate fixed to the rear end of said torque member and transverse supports mounted upon said plate upon which the straw press frame may be mounted.

8. A threshing machine frame comprising a central torque member, substantially integral U- shaped supporting means fixedly secured to said torque member, side walls secured to said U- shaped supporting means, a transverse support connected to said torque member at the vicinity of the rear end thereof and supporting plates fixed to said transverse support to which the side walls of the straw press conduit may be attached.

9. A threshing machine frame comprising a central torque member, substantially integral U- shaped supporting means fixedly secured to said torque member and a buffer spring substantially centrally located supporting the forward portion of said torque member from the front rotatable axle of the threshing machine.

10. A threshing machine frame comprising a central torque member, substantially integral U- shaped supporting means fixedly secured to said torque member, side walls secured to said U- shaped supporting means and leaf springs located so as to support the rearward port-ion of said torque member from the rear axle of the threshing machine.

11. A threshing machine frame comprising a central torque member, a guide sleeve positioned on said torque member and extending vertically therefrom, a pivot pin disposed in said guide sleeve, means for rotatably mounting said pivot pin upon the front axle, a conical spring interposed about said pivot pin for supporting the forward portion of said torque member and substantially integral U-shaped supporting means fixedly secured to said torque member to which the side walls may be secured.

12. A threshing machine frame comprising a metallic central torque member, a pivot pin located at the said portion of said torque member, a conical spring cooperating with said pivot pin to resiliently support the said portion of said torque member, a U-shaped member fixed to the said portion of said torque member also cooperating with said pivot pin and substantially integral U-shaped supporting means fixedly secured to said torque member to which the side walls may be secured.

13. A threshing machine frame comprising a central torque member, substantially integral U- shaped supporting means fixedly secured to said torque member, side walls secured to said U- shaped supporting means, a leaf spring fixed to said torque member at each side thereof at substantially the rearward portion thereof and shackle bolts securing the free ends of said springs to the rear axle.

14. A threshing machine frame comprising a central torque member, substantially integral U- shaped supporting means fixedly secured to said torque member, side walls secured to said U- shaped supporting means, guide bars fixed to said torque member and guiding means for said guide bars located upon an axle of the threshing machine.

15. A threshing machine frame comprising a central torque member, substantially integral U- shaped supporting means fixedly secured to said torque member and walls for the housing of the threshing machine fixed to said supporting means.

16. A threshing machine frame comprising a central torque member, substantially integral U- shaped supporting means fixedly secured to said torque member, and means whereby wedges may be driven between the wheels of the threshing machine and said supporting means.

17. A non-twisting threshing machine frame comprising a tubular metallic underframe disposed substantially centrally of said frame, substantially U-shaped supporting means fixed to said underframe, a steel plate fixed to the rear end of said underframe disposed substantially vertical, an arcuate web plate fixed to the lower edge of said steel plate, said plate and said web plate constituting an extension of said underframe.

HERMANN RAUSSENDORF.

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