JPS58224610A - Reamer of combine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a combine harvester, and more particularly to a harvester whose hoisting speed is automatically changed in conjunction with a handling depth adjustment operation.

In the harvesting operation of a combine harvester, the husks supplied to the threshing machine after the harvesting area are conveyed while being held at the base by a feed chain, and the tips are handled and threshed by bringing them into contact with the circumferential surface of the barrel. In this case, if the position of the tip of the ear relative to the handling barrel is not appropriate, unhandled items may be left unhandled, or the top of the ear may break due to handling. A so-called handling depth adjustment, which is a directional movement adjustment, takes place.

However, in conventional combine harvesters, even if the handling adjustment lever is operated to the shallow handling side or deep handling side, the position of the tip relative to the handling barrel may not follow the position of the operating part.The cause of this has been investigated for a long time, but As a result, we discovered that the relationship between grain culm length and lifting speed was the cause. In other words, in the case of a short culm, the tip of the stalk is light and does not hang down, but when pulled up, it tends to bounce up and tilt backwards, so if it is pulled up at the same speed as a long culm, the tip will be in front. The grain is then fed to the threshing machine, resulting in the same result as shallow handling, resulting in unhandled grain. In addition, in the case of long culms, the tips of the culms are heavy and tend to sag and tilt forward when being hoisted. Therefore, if the hoisting speed is slow, the tips of the culms tend to lag behind, causing disturbances in the conveying culms and the feeding of the culms. As a result, when the grains are fed to the threshing machine, the result is the same as deep handling, resulting in ear breakage.

The present invention has been made in view of the above points, and is configured so that the lifting speed is changed in conjunction with the handling depth adjustment operation, so that the handling depth in the threshing machine can be made to follow the adjustment operation, and the unhandled grain can be removed. The present invention provides a combine harvester reaper that prevents υ, ear breakage, etc., and improves the function of supplying husk to a threshing machine.

Embodiments of the present invention will be described in detail below with reference to the drawings.

1 to 4 show an embodiment of a combine harvester reaper according to the present invention. The figure, its A front view, and FIG. 4 are plan views of the vicinity of the gearbox. In these figures, the combine harvester is equipped with a reaper 2 that reaps and transports the shell culm 1 in the field, and a threshing machine (not shown) that threshes and sorts the transported shell culm 1.
A gearbox 4 on which a reaping drive shaft 3 for driving each device is supported is connected to a bolt 6 by a bearing 5 that rotatably supports the reaping drive shaft 3.
It is fixed to the threshing machine by screwing it onto the top of the front end of the threshing machine. A driven pulley 7 formed by a fixed disk 7a and a movable disk 7b that is movable on the shaft 3 is provided at one end of the reaping drive shaft 3. The driven pulley 7 is provided at one end of the reaping drive shaft 3. A belt 9 is stretched between the pulley 8 and the pulley 8. By doing this, the rotation of the prime mover is transmitted to the reaping drive shaft 3, and the movable disk 7 is moved by the interlocking mechanism described later and the elastic force of the compression coil spring 10.
By moving b forward and backward, the working diameter of the belt 90 relative to the driven pulley 7 changes, and the rotational speed of the reaping drive shaft 3 is changed. A base end portion of a reaping frame 11 extending diagonally downward from the gearbox 4 is integrally fixed to the gearbox 4.
Inside the pipe-shaped reaping frame 11, a transmission shaft 12, which is drivingly connected to the reaping drive shaft 3 by a bevel gear in the gear box 4, is supported. Reference numeral 13 denotes a reaping gear box that is joined to the lower end of the reaping frame 11 with seven flange and is perpendicular to the reaping frame 11 in a T-shape. Drive connected by bevel gear. At the tips of the plurality of weeding rods 15 extending forward along the ground from the reaping gear box 13, a weeding body 16 for scraping the grain frame 1 in the field is attached, respectively. A cutting blade 17, which is formed perpendicularly to the central part and shaped like a clipper and cuts off the base of the culm 1, is supported close to the ground. What is designated as a whole by the reference numeral 18 is a pair of left and right lifting devices for transporting the tips of the fallen culms 1 upward and erecting them. It is equipped with a running pulling chain 18c, and this pulling chain 18c is connected to the chain case 18b.
The transmission shaft 20 is driven by a transmission shaft 20 which is supported through a lifting pipe 19 supporting the lifting shaft 14 and is drivingly connected to the lifting drive shaft 14 by a bevel gear. Furthermore, a pair of right and left raking bearings 21 are provided at the rear of the cutting blade 1T, supported by the weeding rod 15. A raking belt 23, which is equipped with a lug 22 integrally formed at the time of molding and conveys the root of the culm 1 toward the cutting blade 1T, is attached to the raking shaft connected to drive the culm. It is arranged in a shape. Further, below the raking belt 23, there is a raking case 24, and a plurality of raking rods 25 which are supported by eccentric shafts inside the raking case 24 and rotate while appearing and retracting from the raking belt 23. A pair of scraping devices 26 for scraping the shell culm 1 into the conveyance path are arranged with scraping rods 25 rotating in opposite directions facing each other in the scraping path. Further, between the sprocket 27 on one of the scraping shafts and the sprocket 28 supported by the lifting pipe 19, there is a conveyor chain 29 for conveying the root part of the culm 1 scraped by the scraping device 26. is strung up.

The conveyance bearing 30 rotatably supported by the bearing 5 includes:
A chain case 32 of a tip conveying device 31 that conveys the tip of the culm, and a root conveying device 33 that conveys the root of the culm.
The chain cases 34 are parallel to each other and are rotatably supported at their base ends. Inside the chain case 32 on the tip side, there is a conveyance drive shaft 36 supported by a conveyance bearing 30.
A tip chain 4 is stretched between an upper sprocket 37 and a sprocket 38 at the tip of a chain case 32, runs in the direction shown by arrow B in the figure, and is provided with lugs 39 at regular intervals.
0 is stored, and outside the chain case 32,
The tip guide 41 supported by the lifting pipe 19 is
It is constructed along the running trajectory of the tip of the lug 39. Also, inside the chain case 34 on the base side, a conveyance drive shaft 36 is provided.
The upper sprocket 42, the sprocket 43 at the tip of the chain case 34, and the feed chain 4 on the thresher side
There is an arrow C in the figure between sprocket 45 and sprocket 45 adjacent to sprocket 4.
A root chain 46 running in the direction indicated by is stretched, and the root part of the culm 1 is held between this root chain 46 and a lever 4T supported along its running end and conveyed. It is configured as follows.

Both conveying devices 31 and 33 configured in this manner have a handling depth that adjusts the handling depth in the threshing machine by swinging them together and moving the conveying culm 1 toward the grain storage. A height adjustment device and an interlocking mechanism for interlocking the adjustment operation with the speed change operation of the rotational speed of the reaping drive shaft 3 are attached. That is, a swing arm 48 is swingably supported on the bearing 5, and both chain cases 32
．． 34 are integrally connected by a stay 49. The other end of the lever 50, which is pivotally attached to the tip of the swinging arm 4B, is pivotally attached to the other end of a lever 51, which has one end fixed to the stay 49 side, and is also pivoted to the stay 49 side. The rollers 52 are pressed against the swing arm 48 by the weight of both conveying devices 31 and 33. By doing this, the operating lever 53 fixed to the swinging arm 48 can be moved to the operating guide 54.
The swinging arm 48 swings by moving along the lever 50.51, and both conveying devices 31.33 swing while bringing the rollers 52 into sliding contact with the swinging arm 48. The handling depth is adjusted by swinging between the two.

Also, a connecting arm 5 of a connecting mechanism whose base end is fixed to a conveying bearing 30 that rotates with the swinging of both conveying devices 31 and 33.
5 extends toward the driven pulley 7 side in parallel with the gear box 4, and the distal end of this connecting arm 55 is connected to the reaping drive via a thrust bearing 56 between the bearing 5 and the driven pulley 7. Projection 58 of cam 57 mounted loosely on shaft 3
has been involved. On the facing surface of the cam 57 and the bearing 5,
A saw blade-shaped clutch surface is formed, and the connecting arm 55
When the cam 57 rotates during the 0th revolution, the cam 5T moves in the axial direction by the action of the cam surface, and the moving disk 7b moves, so that the rotational speed of the reaping drive shaft 3 is changed as described above. It is configured.

The operation of the reaper configured as above will be explained. As the machine moves forward, the culm 1 that has been raked by the cutting body 16 is
The tips of the ears are lifted up and conveyed by the lug 18a of the device 1B to stand up, and the root portions are conveyed to the reaping position by the rake belt 33. As the machine advances further, the root part of the culm 1 is cut off by the cutting blade 17, and at the same time, the tip part is lifted up and released from the device 1B, and after being scraped into the conveying path by the scraping device 26, it is transferred to the conveying chain 29. captured and transported. The conveyed culm 1 is captured and conveyed by both conveyance devices [31, 33, respectively, at its tip and root portions. In this conveyance, the root part is connected to the root chain 46.
The tip portion is held and conveyed within a space surrounded by an adjacent lug 39 and a tip guide 41 along the tip thereof. The conveyed culm is conveyed with the root portion taken over by the feed chain 44, and the tip portion is supplied to the handling chamber where it is threshed by the handling barrel in the handling chamber.

As described above, the handling depth is adjusted according to the length of the culm 1 to be planted in the field.

For example, when the shell culm 1 changes from a short culm to a long culm, when the operating lever 53 is rotated counterclockwise in FIG.
8. Via the lever 50.51, the two transport devices 31.33 are swung counterclockwise in FIG. 3 about the bearing 5. Therefore, when the husk 1 transferred from the conveyor chain 29 to the root conveyor 33 is supplied to the threshing machine by moving toward the root, the position of the ear tip relative to the handling barrel becomes shallower, and the tip portion is not correctly handled than the handle barrel. Appropriate threshing is performed against the grain.

However, as mentioned above, when the culm 1 is a long culm, the tip of the culm 1 pulled up by the pulling device t18 hangs down.
If the raising speed is slow, the tips of the ears will be delayed and when fed to the threshing machine, they will be in the same condition as deep handling, and the effect of shallow handling by adjusting the handling depth will be lost. However, in this device, when the operating lever 53 is rotated toward the long culm handling side, the swing arm 48 is rotated and the connecting arm 55 integrated therewith is engaged with the protrusion 58. Since the integrated cam 57fil is rotated in the counterclockwise direction in FIG. The movable disk 7b is moved toward the fixed disk Ia against the elastic force of the compression coil spring 10. Therefore, the working diameter of the belt 9 with respect to the driven pulley 7 is reduced, and the speed of the reaping drive shaft 3 is increased, so that the pulling speed of the pulling device 18 is increased, eliminating the delay in the tip of the culm 1, and the threshing machine This eliminates the tendency for the grain to be handled too deeply, and proper threshing is performed as per the adjustment of the handling depth.

Furthermore, when the culm 1 changes from a long culm to a short culm, by rotating the operating lever 53 clockwise in FIGS. 2 and 3, both conveying devices 31 and 33 are also rotated clockwise. As the handling depth becomes deeper, the cam 5 by the connecting arm 55
Due to the action of the cam surface of T, the movable disk 7b returns to the position shown in FIG. 4 by the elastic force of the compression coil spring 10, the diameter of the belt 9 acting on the driven pulley T increases, and the reaping drive shaft 3 is decelerated. . Therefore, as mentioned above, culm 1
This eliminates the tendency for the tip of the ear to jump up during hoisting due to its short culm, resulting in a shallow handling depth during threshing.
The handling depth according to the handling depth adjustment is maintained and proper threshing is performed.

As is clear from the above description, according to the present invention, in a combine harvester, by configuring the reaping machine to change the hoisting speed in conjunction with the handling depth adjustment operation, the hoisting speed corresponding to the grain culm length can be adjusted. This eliminates fluctuations in the handling depth caused by improper grain handling and ensures the handling depth is as per the adjustment operation, reducing the occurrence of uncut areas due to shallow handling and ear breakage due to deep handling, reducing grain loss. Not only can this be significantly reduced, but the interlocking makes operation extremely easy and eliminates malfunctions.

[Brief explanation of the drawing]

1 to 4 show an embodiment of a combine harvester reaper according to the present invention. The figure, its human front view, and FIG. 4 are plan views of the vicinity of the gearbox. 1... Culm, 2... Reaping machine, 3... Reaping drive shaft, 7... 7 driven pulley, 8... Belt, 1
B...Lifting device, 53...Control lever for handling depth, 55...Connection arm, 57...Cam, 5
8... Protrusion. License applicant: Iseki Agricultural Machinery Co., Ltd. Agent: Kazu Yamakawa 4111 (and 1 other person)

Claims (1)

[Claims] The operating member for adjusting the handling depth is engaged with the speed change operation part of the drive shaft for the pulling device, so that the lifting speed is changed in conjunction with the operation for adjusting the handling depth. Combine reaper.