JPH1056856A - Handling cylinder drive structure of threshing equipment - Google Patents

Abstract

(57) [Problem] To provide a handle cylinder rotatably mounted on a side plate in front and behind a handling room, and to enable an output shaft of a transmission case attached to the outside of the side plate to transmit torque to an end portion of the handle support shaft. In the handling cylinder drive structure of the threshing device which is fitted and connected, the handling cylinder support shaft can be easily replaced. SOLUTION: A handle cylinder support shaft 25 is composed of an end shaft portion 25B that can be fitted and connected to an output shaft 34 of a transmission case 24 and a shaft body portion 25A spanned across front and rear side plates of the handle cylinder 10. I have.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handle drum drive structure of a threshing device mounted on a combine, and more particularly, to a handle drum mounted rotatably on front and rear side plates of a handle room and attached to the outside of the side plate. The present invention relates to a handle drum drive structure of a threshing device in which an output shaft of a transmission case is fitted and connected to an end of the handle cylinder support shaft so as to be capable of transmitting torque.

[0002]

2. Description of the Related Art The handling drum drive structure of the above-mentioned threshing apparatus is disclosed, for example, in Japanese Utility Model Laid-Open No. 63-177137 (an example of an axial flow threshing apparatus) or Japanese Patent Laid-Open Publication No. Hei 6-38618 (a self-threshing type threshing apparatus). Example), an input pulley is attached to one end of a handling cylinder support shaft protruding from a rear side plate or a front side plate of a handling chamber, and the handling cylinder is rotationally driven by belt transmission means. Because the belt tension does not act on the handle shaft, the bearing load on the handle shaft is reduced, the load on the bearing that rotatably supports the handle shaft is reduced, and the bearing is inexpensive with low durability. There is an advantage that can be constituted from. In particular, the above-mentioned advantage is even greater in an all-culm throw-in type ordinary threshing apparatus equipped with an axial-flow type handling cylinder having a large handling cylinder weight. As shown in FIG. 13 (Japanese Patent Application No. 8-5703), the handling cylinder drive structure of the threshing apparatus having the above-mentioned advantage is provided with a transmission case 2 attached to the outside of the side plate 22 of the handling chamber.
No. 4, the output shaft 34 and the end of the handle barrel support shaft 25 are spline-fitted so that torque can be transmitted.

[0003]

Since the handle shaft 25 and the output shaft 34 of the transmission case 24 are fitted and connected via a spline, the spline portion is caused by threshing load and vibration of the handle in the axial direction of the handle. Wear cannot be avoided. According to the invention described in the prior application, the handle cylinder support shaft 25 is detachably attached to the handle cylinder 10, and if the spline portion is worn, the handle cylinder support shaft 2 is attached to the handle cylinder 10.
5 can be replaced with a new one. However, since one long handle cylinder support shaft 25 is installed on the handle cylinder 10, the handle cylinder support shaft 25 is replaced with a new one. In such a case, it is necessary to pull out the handle cylinder support shaft 25 from the handle cylinder 10 and replace it. For this reason, the entire handle cylinder is lowered from the handling room and the handle cylinder support shaft is replaced. Clearance adjustment, balance adjustment, etc. had to be performed, and there was still room for improvement in the handling cylinder support shaft replacement surface. An object of the present invention is to eliminate the above disadvantages by a simple structural improvement.

[0004]

[Means for Solving the Problems]

[Structure] The invention according to claim 1 is that the handle cylinder support shaft is formed by an end shaft portion that can be fitted and connected to the output shaft of the transmission case and a shaft body portion that is bridged between the front and rear side plates of the handle cylinder. It is characterized by having been constituted.

[Operation] As shown in FIGS. 4 and 5, when the spline fitting portion between the output shaft 34 of the transmission case 24 and the handle support shaft 25 is worn and the handle support shaft 25 is replaced, When the transmission case 24 attached to the outside of the handling room side plate 22 is removed, the handling cylinder 10 is suspended by a crane or the like, and the handling cylinder 10 is slightly displaced rearward, the fitting of the handling cylinder support shaft 25 and the bearing 27 is completed. When separated, a slight gap is formed between the handling chamber front side plate 22 and the front end of the handling cylinder 10, and the entire handling cylinder 10 is handled in the handling chamber 11.
, The end shaft portion 25B, which is the torque transmission shaft portion, can be removed from the shaft body portion 25A spanned across the front and rear side plates of the handling drum 10.

According to the first aspect of the present invention, only the end shaft portion of the torque transmission shaft portion of the handle barrel support shaft can be replaced, so that there is no need to replace the entire handle barrel support shaft, and the handle barrel handle can be replaced. Work such as removal of the handling cylinder from the chamber and balance adjustment can be made unnecessary, and the cost for replacing the handling spindle can be reduced.

[Structure] The invention according to claim 2 is based on claim 1.
In the invention according to the above, the end shaft portion and the shaft main body portion are spline-fitted, and flange portions are provided on the outer peripheral portion of each shaft portion, and these flange portions are handled and bolts are attached to the front side plate of the cylinder. It is characterized by being fixed via

[0008] According to this structure, the same operation as in the first aspect of the invention is performed, and the transmission torque from the output shaft of the transmission case is shared by the spline in the shaft fitting portion and the bolt in the flange portion. The Rukoto.

According to the second aspect of the present invention, the above-described effects of the first aspect of the invention are provided, and the transmission torque from the output shaft is shared between the spline in the shaft fitting portion and the bolt of the flange portion. Therefore, acceleration of spline wear in the shaft fitting portion is suppressed, and the number of times of replacement of the torque transmission shaft portion can be reduced.

[0010]

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, on the upper part of the threshing device 3, a handling chamber 11 in which an axial-flow type handling cylinder 10 is supported horizontally in the front-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 handling cylinder 10 has a spiral handling 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 across the front and rear side plates 22 and 23, and is rotationally driven by the output shaft 34 of the transmission case 24 attached to the outer surface of the front side plate 20. The detailed structure of the handle driving unit will be described below. explain.

As shown in FIG. 4, the transmission case 2 is provided at the front end of a handlebar support shaft 25 fixed through the center of the handlebar 10.
4 is provided with an end shaft portion 25B having a square spline hole 26 that can be fitted and connected to the output shaft 34. The end shaft portion 25B capable of transmitting torque is rotated to the front side plate 22 via a bearing 27. It is freely held. The bearing 27 is a sheet metal holding member 2 formed in a shallow circular dish shape.
8 and the holding member 2
8 is connected and fixed to the inner surface of the front side plate 22 via a plurality of bolts 29 and upper and lower slots 30 so as to be vertically adjustable.

The handle cylinder support shaft 25 includes a shaft body portion 25A spanning the front and rear side plates of the handle cylinder 10, and the torque transmitting end shaft portion 25B fitted inside the shaft body portion 25A. And both shaft portions 25A, 25A.
B is fitted and connected via an involute spline 25C, and the shaft main body portion 25A and the end shaft portion 25B capable of transmitting torque are respectively connected to the shaft via flange portions 25a and 25b provided on the outer peripheral surface. It is fixedly connected to the front side plate of the handling cylinder 10 via six bolts 46 at equal intervals in the circumferential direction.

As shown in FIG. 3, the transmission case 24 is provided with an input shaft 31 which is linked to an engine (not shown) in a horizontal and horizontal direction, and the power input to the input shaft 31 is transmitted through bevel gears G1 and G2. 1st intermediate shaft 3 heading back and forth
After transmission to the second intermediate shaft 33, it is transmitted to the second intermediate shaft 33 via the reduction gears G3, G4, and transmitted from the second intermediate shaft 33 to the output shaft 34 via any one of the transmission gears G5, G6, G7. It has become. That is, the output shaft 34 is spline-mounted with large and small two-stage shift gears G8 and G9 that are shifted by a swing lever 35 and a shift fork 36 associated therewith, and always meshes with the shift gear G6. Is mounted, and the large-diameter shift gear G8 is directly connected to the transmission gear G8.
5, the output shaft 34 is shifted at a low speed, and the engaging pawl 37 provided on the side end face of the shift gears G8, G9 is engaged with the engaging pawl 38 provided on the end face of the idler gear G10. The output shaft 33 can be shifted at a high speed by shifting the speed of the output shaft 33 to a medium speed and directly engaging the small-diameter shift gear G9 with the shift gear G7. 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.

As shown in FIG. 4, one end of the output shaft 34, which can be shifted to three speeds, protrudes rearward, and its tip spline shaft portion 34a is connected to an end shaft portion of the handle barrel support shaft 25. It is adapted to be fitted and connected to the spline hole 26 of 25B. At this time, in the portion held by the bearing 27, that is, the portion where there is no center runout,
5 and the output shaft 34 are fitted and connected, and the shaft load applied to the handling cylinder 10 does not act on the spline fitting portion.

As shown in FIGS. 8 to 10, mounting portions 40, 41 are provided on the left and right portions of the transmission case 24, respectively, and these mounting portions 40, 41 project from the outer surface of the front side plate 22. 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 slightly up, down, left and right.

Although not shown, the rear end of the handling cylinder support shaft 25 is configured to be supported on the rear side plate 23 via a bearing held by a holding member similar to the above so as to be vertically adjustable. ing. The rear end of the handle barrel support shaft 25 is slidably supported in the axial direction with respect to the bearing of the holding member, and is prevented from moving in the axial direction via the positioning tool. Therefore, when the handling cylinder 10 is shifted backward, the positioning by the positioning tool is released.

The cylinder driving structure according to the present invention is configured as described above. When assembling the cylinder, first, the gap between the 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. Thereafter, the pre-assembled transmission case 24 is disposed outside the front side plate 22, and its output shaft 34 is fitted and connected to the end shaft portion 25 B of the trunk support shaft 25, and the fitting is properly performed. Check the transmission case 26
Is fixedly connected to the front side plate 22. When the inner spline 26 of the end shaft portion 25B is worn and the end shaft portion 25B is to be replaced, after removing the transmission case 24, the top plate of the handling chamber 11 is opened, and the handle cylinder is opened by a crane or the like. 10
When the handle cylinder 10 is slightly displaced rearward by suspending, the fitting between the end shaft portion 25B and the bearing 27 is separated,
Thereafter, the bolt 46 is removed to separate the end shaft portion 25B from the shaft main body portion 25A. When assembling,
Assembling is performed based on the procedure opposite to the above.

As shown in FIG. 3, the end portion 32a of the first intermediate shaft 32 of the transmission case 24 is formed in a rectangular shape and protrudes out of the case. By rotating the first intermediate shaft 32 by inserting the rotation operation handle into the square shaft-shaped end 32a, the rotation of the handling cylinder 10 can be performed by hand.

As shown in FIG. 4, a shallow circular dish-shaped anti-winding plate 45 smaller in diameter than the shallow circular dish-shaped holding member 28 fixed to the inner surface of the front side plate 22 is provided on the front end face of the handling drum 10. Then, the peripheral wall portion 45a of the anti-winding plate 45 enters and overlaps the inside of the peripheral wall portion 28b of the holding member 28, so that a straw or the like enters the gap between the front end face of the handling cylinder and the front side plate 22 and enters the handling barrel support shaft 25. It is configured to prevent winding.

As shown in FIGS. 6 and 7, the flange 25b of the end shaft portion 25B is provided with the end shaft portion 25B.
A disposal screw hole 47 used when separating B from the shaft main body portion 25A is provided. That is, the end shaft portion 2
5B and the shaft body portion 25A are tightly fitted via the involute spline 25C.
7, a bolt can be screwed in, and the end shaft portion 25B can be extracted with the front end surface of the handling cylinder 10 as a reaction force. In addition, in order to facilitate positioning of the end shaft portion 25B with respect to the shaft main body portion 25A, the number of involute splines is set to an integral multiple of 54 for six fixing bolts 46.

As shown in FIGS. 11 and 12, the holding member 28 made of sheet metal for holding the bearing 27 has an inner surface through a gate-shaped reinforcing rib 49 provided with a phase difference of 90 degrees in the circumferential direction. A pair of reinforcing ribs 49, 49 are provided with holes 50, 50 at radially outer portions of the pair of reinforcing ribs 49 for inserting a gear puller 51 used for pulling out a gear from a shaft. The gear puller 51 is inserted into the insertion holes 50, 50, the tip of the gear puller 51 is hooked on the reinforcing ribs 49, 49, and the bearing holding member 28 is pulled out from the end shaft portion 25B. . That is, the handling cylinder 10 can be removed from the handling chamber due to rusting of the bearing 27 or seizure due to poor lubrication, and the bearing 27 can be pulled out from the end shaft portion 25B.

[Brief description of the drawings]

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

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

FIG. 3 is a schematic plan view of a drum drive system.

FIG. 4 is a longitudinal sectional side view showing a shaft support structure at a front portion of a handling cylinder.

FIG. 5 is a longitudinal sectional side view showing a disassembled state of the handling cylinder support shaft.

FIG. 6 is a longitudinal sectional side view showing a state where an end shaft portion is extracted.

FIG. 7 is a front view showing a flange portion of an end shaft portion.

FIG. 8 is a front view showing a shaft support structure at a front part of the handling cylinder.

FIG. 9 is a front view showing a transmission case mounting structure.

FIG. 10 is a plan view of the same.

FIG. 11 is a longitudinal sectional side view showing a state in which a holding member is extracted.

FIG. 12 is a perspective view of a holding member.

FIG. 13 is a longitudinal sectional side view showing a shaft support structure at a front portion of a handle cylinder according to the invention of the prior application.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Handling cylinder 11 Handling chamber 22, 23 Side plate 24 Transmission case 25 Handling cylinder support shaft 25A Shaft main body part 25B End shaft part 25a, 25b Flange part 34 Output shaft 46 Bolt

Claims (2)

[Claims] 1. A handle cylinder is rotatably mounted on front and rear side plates of a handling chamber, and an output shaft of a transmission case mounted on the outside of the side plate is fitted and connected to an end of the handle cylinder support shaft so as to be capable of transmitting torque. A handle cylinder driving structure for a threshing device, wherein the handle cylinder support shaft is provided between an end shaft portion that can be fitted and connected to an output shaft of the transmission case and a front and rear side plate of the handle cylinder. Driving cylinder drive structure of threshing device composed of main body. 2. The end shaft portion and the shaft main body portion are spline-fitted, and flanges are provided on the outer peripheral portions of the respective shaft portions, and these flanges are connected to the front side plate of the cylinder by bolts. 2. The handling cylinder drive structure for a threshing device according to claim 1, wherein the handling cylinder drive structure is fixedly connected.