JPH10276542A - Reaping part transmission structure for combine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the vibrations of pull-up device with acceleration. SOLUTION: A 2nd transmission shaft is provided downward while being interlocked with a 1st transmission shaft toward one of a pair of left and right pull-up devices, a 3rd transmission shaft 31 toward the other one is provided at the lower end of this 2nd transmission shaft while being interlocked at the right end, a 4th transmission shaft 33 toward the other one of left and right pull-up devices is provided at the left end of this 3rd transmission shaft 31 while being interlocked through a bevel gear mechanism 32, on the outer surface of bevel case 32K flange-bonding to a 3rd transmission case 31K internally mounting the 3rd transmission shaft 31 and a 4th transmission case 33K internally mounting the 4th transmission shaft 33, a longitudinal rib 45 for reinforce is formed at the section crossing a 1st plane including the 3rd transmission shaft 31 and the 4th transmission shaft 33 and a lateral rib 46 for reinforce crossing the longitudinal rib 45 is formed at the section crossing a 2nd plane orthogonal with the 1st plane.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a second lower transmission shaft which is interlocked with a first transmission shaft to one of a pair of right and left elevating devices, and which is interlocked at one of left and right ends with a lower end of the second transmission shaft. A harvesting portion transmission structure of a combine in which a third transmission shaft is provided to the other of the left and right, and a fourth transmission shaft is provided at the other end of the third transmission shaft to the other of the left and right elevating devices interlocked via a bevel gear mechanism. About.

[0002]

2. Description of the Related Art In this type of combine harvester transmission structure, a bevel case housing a bevel gear mechanism is flanged to a third transmission case housing a third transmission shaft, and a fourth transmission shaft is connected to the bevel case. By connecting the fourth transmission case, which houses therein, with a flange, a frame supporting the other right and left raising device is formed.

[0003]

In recent years, combine harvesters have attempted to increase the mowing speed to improve the working efficiency. One of the obstacles to this is that, due to insufficient strength of the frame, the mowing speed increases as the mowing speed increases. The device may easily vibrate greatly.

[0004] It is an object of the present invention to suppress the vibration of the raising device accompanying the high speed operation.

[0005]

The features, functions and effects of the first aspect of the present invention are as follows.

[Characteristics] A second transmission shaft is provided downward to be linked to the first transmission shaft to one of the pair of left and right elevating devices. A harvesting unit transmission structure for a combine, wherein a third transmission shaft is provided, and the other end of the third transmission shaft is provided with a fourth transmission shaft to the other of the left and right raising devices interlocked via a bevel gear mechanism,
A fourth transmission case including the bevel gear mechanism, a third transmission case including the third transmission shaft, and a fourth transmission shaft including the fourth transmission shaft.
Of the outer surface of the bevel case that is flange-joined to the transmission case, a longitudinal rib for reinforcement is provided at a portion intersecting with the first plane including the third transmission shaft and the fourth transmission shaft, and a fourth rib orthogonal to the first plane. The point is that horizontal ribs for reinforcement crossing the vertical ribs are formed at portions crossing the two planes.

According to the first aspect of the present invention, vertical ribs are formed on the outer surface of the bevel case to suppress deformation of the bevel case in the first plane, and lateral ribs are formed on the outer surface of the bevel case. Is formed to increase the rigidity of the bevel case in a state in which the deformation of the bevel case in the direction in the plane of the second plane is suppressed, thereby connecting the third transmission case and the fourth transmission case via the bevel case. Deformation of the frame for supporting the raising device, that is, deformation of changing the angle between the third transmission case and the fourth transmission case, and deformation of changing the front-rear position of the third transmission case and the fourth transmission case. Therefore, the rigidity and strength of the frame can be increased.

[Effect] Therefore, according to the first aspect of the present invention, the frame composed of the third transmission case, the bevel case, and the fourth transmission case can be obtained by a simple structural improvement such as forming a vertical rib and a horizontal rib on the bevel case. Strongly supports the other of the right and left raising devices, thereby suppressing the vibration of the raising device due to the increase in speed.

According to the second aspect of the present invention, the features, actions,
The effects are as follows.

[Features] In the features of the first invention,
A second vertical rib for reinforcement is formed in a portion above the horizontal rib on the outer surface of the bevel case at a position appropriately spaced around the axis of the fourth transmission shaft from the vertical rib, and the second vertical rib is formed. The point is that a diagonal rib for reinforcement is formed at the intersection of the rib and the lateral rib and the joint flange portion to the third transmission case.

According to the second aspect of the present invention, a second vertical rib is formed on the outer surface of the bevel case, and an oblique rib is formed to deform the bevel case in a direction other than the in-plane direction of the first plane. By further increasing the rigidity of the bevel case in a state in which the third transmission case and the fourth transmission case are connected via the bevel case, the deformation of the frame for supporting the raising device, which is formed by connecting the third transmission case and the fourth transmission case via the bevel case, is suppressed. Since it is suppressed, the rigidity and strength of the frame can be further increased.

[Effects] Therefore, according to the second aspect of the present invention, the frame including the third transmission case, the bevel case, and the fourth transmission case supports the other right and left pulling devices more strongly, thereby achieving high speed. It has become possible to further suppress the vibration of the raising device caused by the development.

According to the third aspect of the present invention, the features, functions,
The effects are as follows.

[Features] In the features of the first and second aspects of the present invention, a bolt joint is formed at a place where the bevel case is joined to the end of the lateral rib in the joint flange portion to the third transmission case. It is in the point that has been.

[Operation] According to the third aspect of the present invention, since the ends of the lateral ribs are joined to the bolt joints which are functionally thick and have high rigidity, the rigidity of the lateral ribs can be improved.

[Effects] Therefore, according to the third aspect of the present invention, the rigidity and strength of the bevel case can be simplified simply by effectively utilizing the bolt joints necessarily formed for connecting the bolts to the third transmission case. Can be further improved.

According to the fourth aspect of the present invention, the features, functions,
The effects are as follows.

[Features] In the features of the first invention, the second invention, and the third invention, a portion of the bevel case that is connected to an end of the vertical rib in a connection flange portion of the bevel case to the third transmission case. The point is that a bolt joint is formed.

[Operation] According to the fourth aspect of the present invention, since the ends of the vertical ribs are joined to the bolt joints which are functionally thick and have high rigidity, the rigidity of the vertical ribs can be improved.

[Effects] Therefore, according to the fourth aspect of the present invention, the rigidity and strength of the bevel case can be simplified simply by effectively utilizing the bolt joints which are inevitably formed for connecting the bolts to the fourth transmission case. Can be further improved.

According to the fifth aspect of the present invention, the features, functions,
The effects are as follows.

[Features] In the features of the first invention, the second invention, the third invention, and the fourth invention, a portion of the vertical rib located above the horizontal rib is formed in a forked shape. ,
A bolt joint portion is formed at a joint portion of the bevel case with the end of the bifurcated vertical rib portion in the joint flange portion with respect to the fourth transmission case.

[Operation] According to the fifth aspect of the present invention, the ends of the bifurcated vertical ribs of the vertical ribs are joined to the bolt joints which are functionally thick and have high rigidity. Rigidity can be improved.

[Effects] Therefore, according to the fifth aspect of the present invention, the rigidity and strength of the bevel case can be simplified simply by effectively utilizing the bolt joints necessarily formed for connecting the bolts to the fourth transmission case. Can be further improved.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a combine has a cutting unit 2 connected to a front part of a body provided with a pair of right and left crawler type traveling devices 1, and a threshing device 3 and a control part. 4 is mounted.

The reaping unit 2 is configured so as to be able to swing up and down around a left-right axis P1, and to be capable of changing its position to the left and right as shown in FIG. And
As shown also in FIG. 2, a plurality of weeding rods 5 arranged at intervals in the left-right direction, a pair of left and right elevating devices 6L and 6R for causing weeded planted grain culm, and Hair clipper-type reaper 7 for cutting the stem of each culm
And a pair of left and right rotary packers 8L and 8R for gathering the stem side of the harvested grain culm and locking and transporting it rearward, and gathering a portion close to the stem of the harvested grain culm and latching and transporting it rearward. A pair of left and right auxiliary transport devices 9L, 9R and their packers 8L,
There is provided a supply device 11 for conveying and feeding the cereal stem from the 8R and the auxiliary conveying devices 9L and 9R to the feed chain 10 of the threshing device 3. The supply device 11 includes a stock-holding / conveying chain 11A and a tip-locking / conveying chain 11B.

As shown in FIG. 5, in the transmission structure of the mowing unit 2, power from the engine 12 is input via a continuously variable transmission 13 (hydrostatic continuously variable transmission, belt continuously variable transmission, etc.). The output shaft 15 for driving the mowing unit is provided on the traveling transmission case 14 as shown in FIGS. 2, 4, and 7,
A distributing shaft 17 supported by a pair of left and right brackets 16 connected to the body is provided in a state where the distributing shaft 17 is disposed on the left-right-oriented shaft center P1. A first one-way clutch 19 for transmitting power to the distribution shaft 17, a first transmission shaft 22 to the right-side raising device 6 </ b> R interlocked with the distribution shaft 17 via a first bevel gear mechanism 20, and the first transmission shaft 22. Second bevel gear mechanism 2
3, a lower drive shaft 28 which is interlocked via a third bevel gear mechanism 26 at the upper end of the second transmission shaft 25,
5 is connected to the lower end of the third transmission shaft 31 at the right end via a fourth bevel gear mechanism 29 at the lower end of the third transmission shaft 31, and the left elevating device 6L is linked to the left end of the third transmission shaft 31 at the lower end via a bevel gear mechanism 32. Transmission shaft 33, a left elevating device drive shaft 35 interlocked with an upper end of the fourth transmission shaft 33 via a fifth bevel gear mechanism 34, and a sixth bevel gear near the lower end of the second transmission shaft 25. A reaper drive crankshaft 37 interlocked via a mechanism 36 is provided to
The engine power is transmitted to the L, 6R and the reaper 7.

As shown in detail in FIG. 3, the second transmission shaft 25 is divided into an upper transmission shaft 25U and a lower transmission shaft 25D, and the upper transmission shaft 25U and the lower transmission shaft 25D are divided.
Are linked via a seventh bevel gear mechanism 38.

As shown in FIGS. 2 and 3, a cylindrical drive shaft 39 for driving the right packer 8R and the right auxiliary transfer device 9R is rotatably fitted to the lower transmission shaft 25D. The upper end of the cylindrical transmission shaft 39 is connected to the eighth bevel gear mechanism 4.
0, the engine power is transmitted to the right packer 8R and the auxiliary conveyance device 9R by interlocking with the upper transmission shaft 25U via the first transmission shaft 25U. The engine power is transmitted to the left packer 8L and the auxiliary transport device 9L by linking the left auxiliary transport device 9L to the left packer 8L.

Further, as shown in FIG. 4, a supply device drive shaft 41 for driving the stock-holding / conveying chain 11A and the tip-locking / conveying chain 11B is connected to a ninth bevel gear mechanism 42.
The power of the engine is transmitted to the supply device 11 by interlocking with the distribution shaft 17 through the control shaft.

As shown in FIG. 4 and FIG. 6, the portion of the cutting section 2 other than the supply device is provided on the distribution shaft 17 so as to be rotatable around a left-right axis P1 and a left-right axis. A mowing frame 43 slidably mounted in a direction along P1 is attached, and is moved up and down by rotation of the mowing frame 43, and the position is changed left and right by sliding.

As shown in FIGS. 4 and 6, the supply device 11 mounts a ninth bevel case 42K containing a ninth bevel gear mechanism 42 to the distribution shaft 17 so as to be rotatable only around the left-right axis P1. The 9th bevel case 42K
The position of the supply device drive shaft 41 is changed left and right by rotating around the axis of the supply device drive shaft 41.

The structure for attaching the upper end of the right raising device 6R to the cutting frame 43 is, as shown in FIGS. 3 and 4, a mounting boss 43 for attaching the cutting frame 43 to the distribution shaft 17.
A, a first bevel case 20K containing the first bevel gear mechanism 20 is integrally formed, and a second bevel case 23K containing the second bevel gear mechanism 23 and the third bevel gear mechanism 26 is raised to the right by the upper end of the raising device 6R. The first bevel case 20 </ b> K and the second bevel case 23 </ b> K are connected via a first transmission case 22 </ b> K having the first transmission shaft 22 therein. That is, the first bevel case 20
K, the second bevel case 23K, and the first transmission case 22K constitute a mounting frame.

The upper end of the left raising device 6L is attached to the cutting frame 43, as shown in FIGS. 3, 4 and 7, by attaching the third transmission shaft 31 to the front of the cutting frame 43. The third transmission case 31K containing the fourth transmission shaft 33 is fixedly connected to the third transmission case 31K via the bevel case 32K containing the bevel gear mechanism 32. The upper end of the gear 6L is connected to the fourth transmission case 33K via a fifth bevel case 34K in which a fifth bevel gear mechanism 34 is provided. That is, the attachment frame is constituted by the third transmission case 31K, the bevel case 32K, the fourth transmission case 33K, and the fifth bevel case 34K.

As shown in FIG. 7, the bevel case 32K includes a third transmission case 31K and a fourth transmission case 33K.
And is fixed to the third transmission case 31K with three bolts 44, and is fixed to the fourth transmission case 33K with four bolts 44.

As shown in FIGS. 7 and 8 (a) to (d), the outer surface of the bevel case 32 intersects with the first plane including the third transmission shaft 31 and the fourth transmission shaft 33. A vertical rib 45 for reinforcement is provided on the third transmission case 31
First joint flange portion F1 with K and fourth transmission case 33K
And a portion intersecting with the second plane parallel to the third transmission shaft 31 and intersecting with the vertical rib 45 at a portion orthogonal to the first plane and crossing the second plane. Of the first joining flange portion F1
And two portions of the portion above the horizontal ribs 46 and spaced apart from the vertical rib 45 around the axis of the fourth transmission shaft 33 at portions above the horizontal ribs 46 respectively. In addition, a second vertical rib 47 for reinforcement in a posture parallel to the vertical rib 45 is formed so as to extend over the horizontal rib 46 and the second joint flange portion F2, and a portion below the horizontal rib 46 includes: An oblique rib 48 extending between an intersection X between the second vertical rib 47 and the horizontal rib 46 and the first joint flange portion F1.
Are formed.

Screw holes 49A and 49B for the bolt 44 are formed in the first joint flange portion F1 at the portions joined to both ends of the horizontal ribs 46 and at the portions joined to the ends of the vertical ribs 45, respectively. Bolt joints 50A, 50
B is formed.

At four corners of the second joint flange F2, bolt joints 52 in which screw holes 51 for the bolts 44 are formed are formed.

[Another Embodiment] In the above embodiment,
As shown in FIGS. 9A and 9B, a portion of the vertical rib 45 located above the horizontal rib 46 is formed in a forked shape,
Each of the ends of the bifurcated vertical rib portions 45a is
The joint flange portion F2 is joined to the bolt joint portion 52.

In the above embodiment, as shown in FIG. 10, the second vertical ribs 47 and the oblique ribs 48 are removed.

[Brief description of the drawings]

FIG. 1 is a side view of a combine.

FIG. 2 is a cutaway plan view of a cutting section.

FIG. 3 is a cutaway side view of the transmission support structure of the cutting unit.

FIG. 4 is a cutaway plan view of the transmission support structure of the cutting unit.

FIG. 5 is a schematic diagram of a transmission structure of the combine.

FIG. 6 is a plan view of a cutting section.

FIG. 7 is a longitudinal rear view of the bevel gear mechanism.

FIG. 8 is a rear view, a side view, and a perspective view of a bevel case.

FIG. 9 is a perspective view of a bevel case showing another embodiment.

FIG. 10 is a perspective view of a bevel case showing another embodiment.

[Description of Signs] 6L Raising device 6R Raising device 22 First transmission shaft 25 Second transmission shaft 31 Third transmission shaft 31K Third transmission case 32 Bevel gear mechanism 32K Bevel case 33 Fourth transmission shaft 33K Fourth transmission case 45 Vertical rib 45a Bifurcated vertical rib 46 Horizontal rib 47 Second vertical rib 48 Diagonal rib 50A Bolt joint 50B Bolt joint 52 Bolt joint F1 Joint flange F2 Joint flange

Claims (5)

[Claims] 1. A lower second transmission shaft interlocked with a first transmission shaft to one of a pair of left and right raising devices, and a second lower transmission shaft is connected to the lower end of the second transmission shaft at one of left and right ends. A harvester transmission structure for a combine harvester, wherein a third transmission shaft is provided, and a fourth transmission shaft is provided to the other of the left and right raising devices interlocked via a bevel gear mechanism at the other end of the third transmission shaft. A third transmission shaft and a fourth transmission shaft of an outer surface of a bevel case that is flange-bonded to a third transmission case that houses a third transmission shaft and a fourth transmission case that houses a fourth transmission shaft, while incorporating a mechanism; A vertical rib for reinforcement is formed at a portion intersecting with the first plane, and a horizontal rib for reinforcement intersecting with the vertical rib is formed at a portion intersecting with a second plane orthogonal to the first plane. Mowing part transmission structure of a certain combine. 2. A second vertical rib for reinforcement is formed in a portion of the outer surface of the bevel case above the horizontal rib, which is appropriately spaced around the axis of a fourth transmission shaft from the vertical rib. The combine harvester transmission structure according to claim 1, wherein an oblique rib for reinforcement is formed at an intersection of the second vertical rib and the horizontal rib and a joining flange portion to the third transmission case. 3. The harvesting part transmission of a combine harvester according to claim 1, wherein a bolt joint part is formed in a joint part of the bevel case and the third transmission case at an end part of the lateral rib. Construction. 4. The bolt connection portion according to claim 1, wherein a bolt connection portion is formed in a connection flange portion of the bevel case to the third transmission case at a position where the connection portion is connected to an end of the vertical rib. Combine harvester transmission structure. 5. A portion of the vertical rib positioned above a horizontal rib is formed in a forked shape, and a fourth portion of the bevel case is formed.
The harvesting part transmission structure for a combine harvester according to any one of claims 1 to 4, wherein a bolt joint part is formed at a part of the joining flange part to the transmission case that is joined to the end of the bifurcated vertical rib part.