JPH0974855A - Reaping part sliding mechanism in combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To drive a reaping part avoiding a twist, etc., preventing cutting of levee line or pushing mud to an unreaped grain culm side by making the reaping part be capable of sliding to the right and left. SOLUTION: A reaping input shaft 18 is provided at a fulcrum of vertical revolution of a reaping frame, an auxiliary carrier driving shaft 8a is placed in crossing the reaping input shaft 18 at a right angle and driven by connecting to the reaping input shaft, a driving power is transmitted to a joint 23 from a midway of the auxiliary carrier driving shaft 8a, a carrier driving shaft 245 is freely expandably connected to the joint 23 and in transmitting a driving power, a work wheel 25 is fixed on a shifter at a midway part of the carrier driving shaft, a vertical carrier and a lower carrier are made to drivable through a worm 4a and an expandable joint 33 capable of transmitting a driving force is placed at the other end of the carrier driving shaft 24, and a reaping blade-driving shaft 35 is driven from the joint 33.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive structure for a combine harvester that allows the harvester to slide left and right.

[0002]

2. Description of the Related Art Conventionally, in a small combine harvester, as in Japanese Utility Model Publication No. 7-24993, a harvesting frame for arranging a harvesting section and a combine harvester are screwed together with a screw member, and this harvesting frame is attached. The technique of sliding to the left and right is known.

[0003]

However, it has been customary in the past that, especially in a large combine, the weight of the reaping part was heavy and there was no left / right sliding mechanism. Further, in the case of a soft field, the harmful effect of raising the mud by the crawler, for example, when the adjacent uncut grain culm is laid down or the mud adheres to the grain culm, the threshing and selection work becomes inefficient. There was a problem. In order to eliminate such a harmful effect, it is required for a large combine to dispose the crawler away from the adjacent uncut grain culm, that is, to provide a slide mechanism so that the cutting portion approaches the uncut grain culm side. It was

[0004]

The problem to be solved by the present invention is as described above, and the means for solving this problem will be described below. That is, in a combine in which the mowing unit is slidable from side to side, a mowing input shaft is provided at the vertical rotation fulcrum of the mowing frame, an auxiliary transport drive shaft is arranged orthogonally to this mowing input shaft, and a drive connection is made from the mowing input shaft. Then, power is transmitted to the joint from the midway part of this auxiliary transport drive shaft, the power is transmitted to this joint and the transport drive shaft is extensible, and the worm wheel is fixed to the midway part of this transport drive shaft. The vertical transport device and the lower transport device can be driven via the above-mentioned, and a power transmission and expandable joint is provided at the other end of the transport drive shaft, and the cutting blade drive shaft is driven from this joint. is there.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described. 1 is an overall side view of the combine, FIG. 2 is a side view of the mowing unit, FIG. 3 is a plan view of the same, FIG. 4 is a schematic plan view showing a mechanism for rotating the auxiliary transport drive shaft, and FIG. A skeleton diagram showing the slide mechanism of the reaper of the present invention, FIG.
FIG. 5 is a view taken along the line H--H, FIG. 7 is a schematic plan view showing the sliding mechanism of the cutting unit of the present invention, and FIG. 8 is a side view showing a sliding guide connecting the auxiliary transporting device and the vertical transporting device. Figure, Figure 9
FIG. 10 is a side view showing a slide state of the vertical conveyance device when the reaper is slid, FIG. 10 is a side view showing a positional relationship between a sliding guide and a vertical conveyance rotation shaft, and FIG. 11 is a vertical conveyance device. FIG. 12 is a plan view showing the positional relationship between the auxiliary transporting device and the vertical transporting device when the angle is adjusted from the short culm to the long culm and when the reaper is slid to the left and right, and FIG. 12 is a schematic plan view showing the swinging mechanism of the reaping frame. Is.

First, an outline of the overall structure of the combine will be described with reference to FIG. The frame F is mounted on the crawler type traveling device G, and the threshing section B and the sorting section C are placed on one side of the left and right sides of the machine body, and the driver's seat D and the Glen tank E are placed on the other side on the frame F. The reaping unit A is located at the front of the threshing unit B and at the frontmost part of the machine body, and the grain culm conveying device is arranged at the reaping unit A toward the feed chain 9 of the threshing unit B. It is a thing. In addition, 10 of the threshing part B is a handling cylinder.

The transport structure in the reaper A will be described with reference to FIGS. 2 and 3. The combine in the present embodiment is 6-row cutting, the weeding board 19 is attached to the foremost part of the mowing frame 20 of the mowing section A, and the raising device 1 for taking in the grain culm as a standing state is formed in a standing state at the rear part thereof. It is arranged. The raising device 1 raises the grain culm, the rake belt 2 scrapes the grain culm, and the cutting blade 3 cuts the grain culm root. Then, the grain culm cut by the cutting blade 3 holds the roots of the stock on the left and right lower transfer devices 4L and 4R, and pinches the tips with the upper transfer devices 5L and 5R. It is configured to collect in one place at the rear from the transportation device configured in a letter shape.

Further, a reaping input pulley 17 is fixed to an end of a reaping input shaft 18 provided at a vertical fulcrum of the reaping portion A shown in FIG.
Further, power is transmitted from a transmission case (not shown), and the mowing unit A and each transport device are driven via a slide drive shaft 11, which will be described later.

Next, as shown in FIG. 4, a bevel gear 18b is axially fixed to the end of the reaping input shaft 18, and the bevel gear 18b meshes with the bevel gear 8b which is axially fixed on the auxiliary transport drive shaft 8a. , The auxiliary transport drive shaft 8a is driven,
The auxiliary transport device 8 is driven. In addition, the auxiliary transport drive shaft 8
a is a sprocket 5 further extended and fixed to the end portion
The right upper transport device 5R is configured to be driven via Ra.

Further, the lower carrying device 4C and the upper carrying device 5C in the central part are constructed so as to meet at the rear parts of the left lower carrying device 4L and the upper carrying device 5L.
Then, the stocker side is held by the vertical transfer device 7 and the tips are held horizontally by the upper transfer device 5R while the standing grain culms are tilted horizontally, and the threshing part is passed through the auxiliary transfer device 8. It is inherited to the feed chain 9 of B. The vertical transfer device 7
As shown in FIG. 2, the conveying angle can be adjusted, and the handle depth is adjusted by determining the grain culm gripping position on the feed chain 9 by this angle adjustment. In order to detect this handling depth, a handling depth detection sensor S is arranged above the auxiliary transport device 8.

Next, the combine harvester slide mechanism of the present invention will be described. First, as shown in FIG. 2 and FIG. 4, the slide drive shaft 11 is configured such that a bevel gear 18a axially fixed to the cutting input shaft 18 is meshed with a bevel gear 11a axially fixed to the upper end of the slide drive shaft 11. There is.

As shown in FIG. 12, a slide guide 62 is laterally provided between the left and right mowing frames 20L and 20R, and is disposed below the slide drive case 39 which covers the slide drive shaft 11. The inside of the opening 39a is guided and slidable. Further, a receiving cylinder 50 is penetrated through the slide drive case 39, and a horizontal feed shaft 51 is fitted in the receiving cylinder 50, and the horizontal feed shaft 51 is connected to the right mowing frame 20R via a connecting stay 52. Has been done. Further, the power from the slide drive shaft 11 is transmitted to the receiving cylinder 50 via a clutch, and the lateral feed shaft 51 is driven so that it can slide left and right. However, the electric motor M is disposed in the receiving cylinder 50, and the electric motor M
It is also possible to expand and contract the transverse feed shaft 51 by sliding the cutting section A in the left and right directions by rotating the cutting section A forward and backward.

Further, as shown in FIG. 4, a bevel gear case 47 for covering the bevel gear 18b and the bevel gear 8b via a bearing 48 is provided on the outer peripheral portion of the end of the reaping input case 36 for covering the reaping input shaft 18. Is externally fitted and rotatably supports the bevel gear case 47, and the auxiliary transport drive shaft 8a is rotatable about the reaping input shaft 18 as a fulcrum in a state where the bevel gear 18b and the bevel gear 8b are meshed with each other. I am configuring.

Further, as shown in FIG. 5, a bevel gear 8c is fixed in the middle of the auxiliary transport drive shaft 8a, and a bevel gear 23a is meshed with the bevel gear 8c, and the bevel gear 23a is a joint. It is fixed to the end of 23. A transport drive shaft 24 is inserted into this joint 23, which enables expansion and contraction by spline coupling,
At the same time, the power is also transmitted. Further, as shown in FIGS. 5 and 6, a worm wheel 25 is fixedly provided in the middle of the transport drive shaft 24, and the worm wheel 25 meshes with the worm 4b and is housed in the gear case 6. .

A lower transfer drive shaft 4a is provided in the gear case 6.
Is supported, a worm 4b is formed on the lower transport drive shaft 4a, and a lower transport sprocket 4Ra for driving the lower transport device 4R on the right side is fixed to one end of the lower transport drive shaft 4a. Therefore, when the transport driving shaft 24 rotates, the worm wheel 25 and the worm 4b
The lower conveyance drive shaft 4a rotates, and the lower conveyance sprocket 4
The lower transfer device 4R on the right side is driven via Ra.
A bevel gear 26 is fixedly provided on the other end of the lower transport drive shaft 4a, and the bevel gear 27 is attached to the bevel gear 26.
Are engaged with each other, and the vertical transport drive shaft 7a is rotated via the vertical transport rotary shaft 28, the bevel gear 29, and the bevel gear 30, and the vertical transport sprocket 31 is fixedly mounted on the upper end of the vertical transport drive shaft 7a to perform vertical transport. The chain in the vertical transport case 32 that constitutes the device 7 is driven.

Further, the lower end portion of the transport drive shaft 24 is inserted into the joint 33 in the same manner as described above, and is configured to be extendable and contractible by spline connection or the like and capable of transmitting power. The bevel gear 3 is attached to the lower end of the joint 33.
3a is fixedly mounted, and the bevel gear 34a axially fixed to the upper end of the cutting blade transmission shaft 34 is meshed with the bevel gear 33a. A bevel gear 34b is fixed to the lower end of the cutting blade transmission shaft 34, and the bevel gear 35 is fixed to the middle portion of the cutting blade drive shaft 35 covered by the cutting blade drive case 53.
The a and the bevel gear 34b mesh with each other, and the cutting blade drive shaft 35 is driven to drive the cutting blade 3.

When the cutting section A is slid in the left-right direction, the shaft of the bevel gear 8c serves as a fulcrum, and the joints 23 and 33 rotate while expanding and contracting, as shown in FIG.

In this embodiment, as shown in FIGS. 2, 3 and 8, a slide guide 36 is vertically provided from above the auxiliary carrier 8 to the upper part of the vertical carrier 7. The opening 7b is provided in the opening 7b, and the sliding guide 3 is inserted into the opening 7b.
6 is slidably pierced, and the auxiliary transfer device 8 and the vertical transfer device 7 are engaged with each other. As shown in FIG. 10, the rotation fulcrum shaft 36a at the upper end of the sliding guide 36 is configured to be parallel to the vertical conveyance rotation shaft 28. With this configuration, as shown in FIGS. 9 and 11, when the reaper A is slid in the left-right direction as shown by an arrow α, the auxiliary transport device 8 and the vertical transport device 7 are relatively moved to each other. The distance is kept constant, and as shown in FIGS. 8 and 11, according to the length of the cut culm, the vertical conveying device 7 is angled from short culm to long culm as indicated by an arrow β. Even when it is adjusted, it can be supported by the auxiliary transporting device 8 through the sliding guide 36 to prevent contact between the two.

Further, in this embodiment, as shown in FIG. 12, a drive pulley 54 is pivotally connected to the upper part of the cutting blade drive case 53 that covers the cutting blade drive shaft 35, and the drive pulley 54 is connected.
Bevel gears are provided below the
A cutting blade pulley 5 drives a cutting blade 3 by interlocking a driving pulley 54 via a bevel gear, and a belt 57 is wound around the driving pulley 54. Then, when a scraping detection sensor (not shown) detects scraping of the grain stalk, the tension pulley 58 connected to the cutting blade drive case 53 via the control means and the actuator causes the belt 5 to move.
7, the power is transmitted to the cutting blade pulley 60 to drive the cutting blade 3, and conversely, if the grain stem is not scratched, the biasing force of the tension pulley 58 is reduced. The power transmission to the cutting blade pulley 60 is cut off, and the driving of the cutting blade 3 is stopped. With such a configuration, a flywheel is conventionally used as the cutting blade pulley 39, but since it is a pulley, weight and cost can be reduced, and vibration and noise can be reduced. .

[0020]

Since the present invention is constructed as described above,
It has the following effects. That is, the mowing frames 20L and 20R connected to the mowing section A can be swung to the left and right through the swinging means, and the supporting portion can be rotated through the rotating means. From the midway portion, the power transmission means 8c and 23a are used to drive the transport drive shaft 24 fixed to the upper end of the expandable joint 23, and the worm wheel 2 is provided at the midway portion of the transport drive shaft 24.
5, the worm 4b is fixed to the lower conveyance drive shaft 4a which is interlocked with the vertical conveyance device 7 arranged in the gear case 6 fixed to the slide drive case 39, and the worm 4b and the worm 4b are connected to each other. The joint 23 is expanded and contracted so that the worm wheel 25 is always meshed, and the expandable joint 33 is fixedly mounted on the lower end of the transport drive shaft 24, and the cutting blade drive shaft 35 is inserted through the cutting blade transmission shaft 34. Since it is configured to drive the auxiliary transport drive shaft 8a and the vertical transport drive shaft 7a
The reaper A can be slid in the left-right direction while maintaining a constant distance from the carriage drive shaft 2 in the present embodiment.
The worm 4b and the worm wheel 25 are used as the power transmission means from the No. 4 to the lower transport drive shaft 4a. However, since both the shafts 24 and 4a are orthogonal to each other, the shafts are made to be more uniform than a bevel gear or the like. The number can be reduced, and the driving can be simplified.

[Brief description of drawings]

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

FIG. 2 is a side view of the reaper.

FIG. 3 is a plan view of the same.

FIG. 4 is a schematic plan view showing a mechanism for rotating an auxiliary transport drive shaft.

FIG. 5 is a skeleton diagram showing the sliding mechanism of the reaper according to the present invention.

FIG. 6 is a view taken in the direction of arrows HH shown in FIG.

FIG. 7 is a schematic plan view showing the sliding mechanism of the reaper according to the present invention.

FIG. 8 is a side view showing a sliding guide connecting the auxiliary transport device and the vertical transport device.

FIG. 9 is a side view showing a slid state of the vertical transport device when the reaper is slid.

FIG. 10 is a side view showing a positional relationship between a sliding guide and a vertical conveyance rotating shaft.

FIG. 11 is a plan view showing a positional relationship between the auxiliary transporting device and the vertical transporting device when the vertical transporting device is angle-adjusted from the short culm to the long culm and when the reaper is slid left and right.

FIG. 12 is a schematic plan view showing the swing mechanism of the mowing frame.

[Explanation of symbols]

 A Mowing unit 3 Mowing blade 4R Right lower transport device 4a Lower transport drive shaft 4b Worm 6 Gear case 7 Vertical transport device 8 Auxiliary transport device 11 Sliding drive shaft 18 Cutting input shaft 20 Mowing frame 23 Joint 24 Transport drive shaft 25 Worm wheel 33 Joint 34 Cutting blade transmission shaft 35 Cutting blade drive shaft 36 Sliding guide 47 Bevel gear case 48 Bearing

Claims (1)

[Claims] 1. A combine harvester capable of sliding a reaping unit to the left and right, wherein a reaping input shaft is provided at a vertical rotation fulcrum of a reaping frame, and an auxiliary conveyance drive shaft is arranged orthogonal to the reaping input shaft. More drive connection, power is transmitted to the joint from the midway part of this auxiliary transport drive shaft, power is transmitted to this joint, and the transport drive shaft is connected in a telescopic manner,
Stop the worm wheel in the middle of this transport drive shaft,
The vertical transfer device and the lower transfer device can be driven through a worm, and a power transmission and expandable joint is provided at the other end of the transfer drive shaft, and the cutting blade drive shaft is driven from this joint. The combine harvester slide mechanism.