JPH09191759A - Structure for driving threshing cylinder of thresher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the practice of both the assembling of a driving device for a threshing cylinder in a thresher with a simple structure and sure and smooth transmission of a power to a threshing cylinder in the structure for driving the threshing cylinder of the thresher composed by installing the threshing cylinder on a shaft over side plates in front and rear and interlocking and connecting a transmission case to one end of the supporting shaft of the threshing cylinder so as to transmit the rotating power. SOLUTION: This structure for driving a threshing cylinder of a thresher is obtained by connecting a holding member 28 for bearings 27 capable of freely rotatably supporting a supporting shaft 25 for a threshing cylinder 10 to a side plate 22 so as to enable the vertical positional regulation, fitting and connecting an output shaft 34 of a transmission case 24 attached to the outside of the side plate 22 to the end of the supporting shaft 25 for the threshing cylinder 10 so as to enable the torque transmission and engaging and connecting the supporting shaft 25 for the threshing cylinder 10 to the output shaft 34 at a site for holding the supporting shaft 25 for the threshing cylinder 10 with the bearings 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a barrel driving structure for a thresher mounted on a combine.

[0002]

2. Description of the Related Art As a handling cylinder driving structure of a threshing device, for example, Japanese Utility Model Laid-Open No. 63-177137 (an example of an axial flow type threshing device) or Japanese Patent Laid-Open No. 6-38618 (an example of a self-thrusting type threshing device) As disclosed in (1), an input pulley is often attached to one end of a handling cylinder support shaft protruding from the rear side plate or the front side plate, and the handling cylinder is rotationally driven by a belt transmission means. In addition, JP-A-57-20
As disclosed in Japanese Patent No. 6308, there is also known a configuration in which one end of a handling cylinder support shaft is interlocked with a gear transmission case attached to a front side plate to drive the handling cylinder in rotation.

[0003]

The means for driving the handling cylinder by belt has the advantage that the transmission has a simple structure, is inexpensive, and can be easily assembled, and is most often used. Since the supporting shaft acts as a shaft load with a large handling cylinder weight, threshing load, and belt tension, it is necessary to make the bearing that supports the handling cylinder support shaft durable and expensive. In particular, in an all-cullet throwing-in type normal threshing device equipped with an axial flow type handling drum having a large handling barrel weight, the above tendency is further strengthened.

On the other hand, in the means for driving the handling cylinder by means of gear transmission, the bearing load is reduced as much as the belt tension does not act on the handling cylinder support shaft, and the load on the bearings supporting the handling cylinder support shaft is reduced. There is an advantage. However, on the other hand, in this means, the projecting end of the handling barrel support shaft is directly linked to the gear transmission case,
The handle cylinder is supported on the front and rear side plates via bearings, and at the same time, a gear transmission case is attached, and at the same time, the handle cylinder axis for adjusting the clearance between the handle teeth and the mesh provided on the peripheral portion of the handle cylinder. It was necessary to make adjustments and it was troublesome to assemble.

The present invention has been made paying attention to such a point, and the invention according to claim 1 can easily and easily assemble the handling cylinder by belt drive by gear transmission. The purpose is to be able to.

It is an object of the invention according to claim 2 to make the assembling easy and easy and to surely and smoothly transmit the power to the handling cylinder.

[0007]

[Means for Solving the Problems]

[Structure] The invention according to claim 1 is a threshing device driving structure for a threshing device, wherein the threshing device is mounted over the front and rear side plates, and rotational power is transmitted to one end of the handling cylinder support shaft. The bearing holding member that rotatably supports the handling cylinder support shaft is connected to the side plate so that the vertical position can be adjusted, and the output shaft of the transmission case attached to the outside of the side plate is fitted to the end of the support shaft so that torque can be transmitted. It is characterized by being connected.

[Operation] According to this configuration, first, only the handling cylinder is supported via the bearings over the front and rear side plates, and at this time, the holding member of the bearing is adjusted in the vertical position to provide a gap between the handling cylinder and the receiving net. Make adjustments. After the assembly of the handling cylinder between the front and rear side plates is completed, the transmission case that has been preassembled is provided on the outer surface of the side plate on the drive side of the front side plate or the rear side plate, and the output shaft of the transmission case is arranged. Is fitted and connected to one end of the handling barrel support shaft that is positioned and supported via a spline or key, and the transmission case is fixed to the side plate with the handling barrel support shaft and output shaft properly fitted. Assembly of the drive device is completed.

[Effect] According to the invention as claimed in claim 1, since the assembling of the handling cylinder between the front and rear side plates and the connection of the transmission case to the side plate can be separately performed at the front and rear, the handling cylinder for the receiving net can be provided. The position can be adjusted easily regardless of the transmission case, and the transmission case itself can be pre-assembled, and as a whole, the assembling of the handling cylinder drive device to the threshing device can be easily performed in a short time. It was

[Structure] The invention according to claim 2 is the same as claim 1.
In the invention according to, it is characterized in that the fitting portion between the handling barrel support shaft and the output shaft is held by the bearing.

[Operation] According to this configuration, the same operation as the invention according to claim 1 is achieved, and the fitting portion with the output shaft is provided at the holding portion of the handling barrel support shaft by the bearing, that is, the portion where the misalignment does not occur. By setting it, the occurrence of rattling at the fitting portion during the transmission of rotational power is suppressed.

[Effect] According to the invention of claim 2, in addition to the effect of the invention of claim 1, the handling cylinder can be driven reliably and smoothly without backlash at the fitting portion.

[Structure] The invention according to claim 3 is the same as claim 1
The invention according to the second aspect is characterized in that the handling cylinder is an axial flow type handling cylinder having spiral handling teeth on its peripheral surface.

[Effect] According to the invention according to claim 3, the invention is applied to an axial flow type handling cylinder having a large diameter and a long length, a considerably large weight, and a large threshing load. The above effects of the invention can be exhibited particularly effectively.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a conventional combine equipped with an axial flow threshing apparatus to which the present invention is applied, and FIG. 2 shows the internal configuration of the threshing apparatus. The combine is connected to a front portion of a vehicle body equipped with a pair of right and left crawler traveling devices 1 so that a cutting pre-processing unit 2 is swingably movable up and down. An axial flow threshing device 3 into which culms are introduced, an operating cabin 4, a grain tank 5, a driving unit (not shown), and the like are mounted on a vehicle body. A rotary reel 6 for scraping a large number of planted grain stems backward, a cutting blade 7 for cutting the scraped grain stems from the stock root, an auger 8 for feeding the harvested grain stems to an intermediate portion of the cutting width, and joining. A feed conveyor 9 and the like are provided, in which the combined grain stalks are lifted and conveyed rearward and upward and supplied to the threshing apparatus 3.

As shown in FIG. 2, in the upper part of the threshing device 3, there is a handling chamber 11 in which an axial-flow type handling cylinder 10 is axially supported horizontally in the front and rear direction.
A sieve case 13 for receiving the processed material leaked from the receiving net 12 (concave) and sifting it while oscillating and transferring it rearward, a Karamin 14 for wind separation, and a first recovery unit A sorting unit 17 including a second collection unit 15 and a second collection unit 16 is provided. The grains collected by the first collection unit 15 are transported to the kernel tank 5 and collected by the second collection unit 16. The product is a screw conveyor type reduction unit 18
The straw waste returned to the front of the sheave case 13 and carried out from the end of the handling chamber 11
9 and is released outside the machine.

The handle cylinder 10 has a spiral handle tooth 20 on its peripheral surface.
And a number of independent teeth 21 are attached to the spiral teeth 20 at a constant pitch in the circumferential direction.
It is horizontally supported by the front and rear side plates 22 and 23, and is rotationally driven by a transmission case 24 attached to the outer surface of the front side plate 20. The detailed structure of the handling cylinder drive section will be described below.

As shown in FIGS. 3 and 4, a shaft end 25a having a spline hole 26 is provided at the front end of the handle barrel support shaft 25 fixed through the center of the handle barrel 10, and this shaft end portion is provided. 25 a is rotatably held by the front side plate 22 via a bearing 27. The bearing 27 is internally fitted and attached to a central boss portion 28a of a holding member 28 made of a metal plate formed in a shallow circular dish shape, and the holding member 28 is vertically adjustable through a plurality of bolts 29 and vertical slots 30. Front side plate 22
It is connected and fixed to the inner surface of the.

As shown in FIGS. 5 and 6, the transmission case 24 includes an input shaft 3 which is belt-operated with an engine (not shown).
1 is installed horizontally, and the power input to the input shaft 31 is transmitted to the first intermediate shaft 32 moving forward and backward via the bevel gears G1 and G2, and then to the second intermediate gear via the reduction gears G3 and G4. It is transmitted to the shaft 33 and is transmitted from the second intermediate shaft 33 to the output shaft 34 via any one of the speed change gears G5, G6 and G7. That is, the output shaft 34 is spline-mounted with a gear shift lever 35 that is oscillated, and two large and small shift gears G8 and G9 that are shifted by a shift fork 36 that is linked to the gear shift lever 35. Idling gear G10
Is mounted, the output shaft 34 is shifted at a low speed by directly engaging the large-diameter shift gear G8 with the transmission gear G5, and the engaging claws 3 provided on the side end surfaces of the shift gears G8, G9.
The output shaft 33 is shifted at a medium speed by engaging 7 with the engaging claw 38 provided on the end face of the idle gear G10, and the output shaft 33 is directly engaged with the shift gear G9 having a small diameter. You can shift at high speed. As described above, the handling cylinder rotational speed can be changed to three steps so that suitable threshing can be performed according to the type of the harvested crop.

The output shaft 34 capable of shifting in three stages
One end of the shaft is projected rearward, and its tip end spline shaft portion 34a is internally fitted and connected to the spline hole 26 of the shaft end portion 25a of the handling barrel support shaft 25. At this time, the handling barrel support shaft 25 and the output shaft 34 are fitted and connected at a portion held by the bearing 27, that is, a portion having no runout, and the shaft load applied to the handling barrel 10 acts on the spline fitting portion. There is no.

As shown in FIGS. 7 and 8, mounting portions 40 and 41 are provided on the left and right portions of the transmission case 24, respectively, and these mounting portions 40 and 41 are provided on the outer surface of the front side plate 22 so as to project. The seats 42 and 43 are connected and fixed to the seats 42 and 43 with bolts 44 so that the positions can be adjusted vertically and horizontally.

Although not shown, the rear end of the handling barrel support shaft 25 is structured so that it can be vertically adjusted and supported by the rear side plate 23 via a bearing held by a holding member similar to the above. ing.

The handling cylinder drive structure according to the present invention is constructed as described above. When assembling the handling cylinder, first, the gap between the handling cylinder 10 and the receiving net 12 is adjusted by adjusting the vertical position of the holding member 28. Then, the handling cylinder 10 is positioned and the holding member 28 is fixed to the front side plate 22. Then, the transmission case 24, which has been assembled in advance, is arranged outside the front side plate 22, and its output shaft 34 is fitted and connected to the shaft end portion 25a of the handling barrel support shaft 25, and the proper fitting state is confirmed. Then, the transmission case 26 is connected and fixed to the front side plate 22.

It should be noted that, as shown in FIG. 3, the front end surface of the handling body 10 is a winding prevention plate 45 in the shape of a shallow circular dish having a diameter smaller than that of the holding member 28 in the shape of a shallow circular plate fixed to the inner surface of the front side plate 22. The peripheral wall portion 45a of the anti-wrapping plate 45 is inserted inside the peripheral wall portion 28b of the holding member 28 so as to be overlapped with each other, so that straws or the like enter the gap between the front end face of the handle body and the front side plate 22 and the handle body support shaft is supported. It is configured to prevent wrapping around 25.

Further, as shown in FIG. 6, the end portion 32a of the first intermediate shaft 32 of the transmission case 24 is formed in the shape of an angular shaft and protrudes outside the case. By inserting the rotation operation handle into the angular axis end 32a and rotating the first intermediate shaft 32, the handling cylinder 10 can be manually rotated.

[Another Embodiment] In the invention of claim 1, the handling barrel support shaft 25 is attached to the side plate 2.
2 and the transmission case 24.
The output shaft 34 may be interlockingly connected by spline fitting. At this time, it is optional whether the handling barrel support shaft 25 side is a spline shaft or a spline hole. The handling cylinder 10 can also be driven from the rear side plate 23 side.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is an overall side view of an ordinary combine harvester.

FIG. 2 is a side view showing the internal configuration of the threshing apparatus.

FIG. 3 is a vertical sectional side view showing a shaft support structure of a front portion of a handling cylinder.

FIG. 4 is a front view showing a shaft support structure of a front portion of a handling cylinder.

FIG. 5 is a schematic plan view of a handling cylinder drive system.

FIG. 6 is a cross-sectional plan view of the transmission case.

FIG. 7 is a front view showing a transmission case mounting structure.

FIG. 8 is a plan view showing a transmission case mounting structure.

[Explanation of symbols]

 10 Handle cylinder 20 Spiral handle teeth 22,23 Side plate 24 Transmission case 25 Handle cylinder support shaft 27 Bearing 28 Holding member 34 Output shaft

Claims (3)

[Claims] 1. The front and rear side plates (22) of the handling cylinder (10),
A threshing device driving structure of a threshing device configured to span over (23) and to transmit rotational power to one end of the handling barrel support shaft (25), wherein the handling barrel support shaft (25) is rotated. The holding member (28) of the bearing (27) that is freely supported is connected to the side plate (22) so that the vertical position can be adjusted, and the output shaft (34) of the transmission case (24) attached to the outside of the side plate (22) is Handling body support shaft (2
5) A handling cylinder drive structure for a threshing device, which is fitted and connected to the end portion of 5) so as to transmit torque. 2. The handling barrel support shaft (25) and the output shaft (3)
4. The threshing device driving structure for the threshing device according to claim 1, wherein the fitting portion with 4) is held by the bearing (27). 3. The threshing device drive structure of the threshing device according to claim 1, wherein the handling drum (10) is an axial flow type handling drum having spiral handling teeth (20) on its peripheral surface.