JPH0516915Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is a device that swings up and down around an axis that is located on the opposite side of the handling torso from the handling port and is approximately parallel to the axis of the handling torso. Attaching the handling cylinder so that it can move,
A waste straw conveying device configured to transmit the handling cylinder driving force to a portion of the handling cylinder rotation support shaft protruding forward from the handling cylinder and conveying the threshed waste straw to the rear of the machine body is provided at the rear of the handling room, and The present invention relates to a threshing device for a combine harvester, in which a drive shaft of the waste straw conveying device is provided on the conveyance start end side of the waste straw conveying device.

[Conventional technology]

The above-mentioned threshing device is designed so that when cleaning the inside of the handling chamber, the handling cylinder can be easily taken out of the handling chamber and put back into the handling chamber by a swinging operation.

Conventionally, in this type of threshing equipment, for example,
As shown in Publication No. 58-194646, the intermediate rotation shaft for transmitting power to the handling cylinder rotation support shaft is a support shaft that pivots the handling cylinder so that it can swing vertically, and the rear end is behind the handling cylinder. By using means for winding a winding transmission across a portion of the intermediate rotating shaft located rearward from the handling cylinder and a drive shaft of the straw removal device. , which transmits power from the transmission system for the handling cylinder to the waste straw conveying device, and allows the vertical swinging operation of the handling cylinder to be performed with the wrapping transmission device for transmitting the power of the waste straw conveying device attached. It was hot.

[Problem that the invention attempts to solve]

In the case of the above-mentioned conventional means, the long intermediate rotating shaft, one end of which is located in front of the handling cylinder and the other end of which is located behind the handling cylinder, is required as a transmission shaft, which is economically disadvantageous.

The purpose of the present invention is to provide a system that allows the handling cylinder to be raised and lowered without requiring the removal of the transmission device for the straw removal device, and to achieve this at a low cost while maximizing the lifting stroke of the handling cylinder.

[Means for solving problems]

The characteristic configuration of the present invention is that in the above-described threshing device for a combine harvester, at the rear of the handling chamber, the drive shaft, the handling barrel rotation support shaft, and the idle shaft,
The handling cylinder is arranged in a triangular arrangement in which the handling cylinder is in the lowered use position and the handling cylinder rotation support is located at the lowest level when viewed in the direction of the handling cylinder axis, and the driving shaft and the handling cylinder rotation support are The winding transmission device is wound around the shaft and the idle shaft, and the tensioning device for applying tension to the winding transmission device is driven by the driving of the winding transmission device while the handling cylinder is in the lowered use position. The lower transmission part of the upper transmission part and the lower transmission part located between the shaft and the idle shaft is bent inward of the wrapped transmission loop. Its action and effects are as follows.

[Effect]

The rotational force transmitted to the front of the handling cylinder to drive it is transmitted to the rear of the handling chamber by the handling cylinder rotation support shaft.
Furthermore, the winding transmission is transmitted to the drive shaft to drive the waste straw conveying device.

Due to the above-mentioned triangular arrangement of the handling cylinder rotation support shaft, a sufficient length is provided to enable the wrapping transmission device to be pulled upward from the drive shaft and idle shaft, and furthermore, the tensioning device is designed to allow the handling cylinder to be lowered. In this position, the lower gear portion is bent inside the gear loop, making the extra length longer than it would be without it. When the handling cylinder is raised with the wrap-around transmission device attached, the handling cylinder rotation support shaft rises together with the handling cylinder, so it comes into contact with the upper transmission portion and lifts up the wrap-around transmission device. . Therefore, even if the handling cylinder is raised with the wrapping power transmission attached, the handling cylinder will rise through a relatively long stroke from the lowered use position. This is allowed by pulling up the winding transmission using the support shaft.

[Effect of idea]

Due to the aforementioned triangular arrangement and the action of the tensioning device, the handling cylinder can be raised without the need to remove the wrapping transmission device, and work such as cleaning the handling room can be done efficiently. Since it can also be used as a shaft, there is no need for a special transmission shaft such as the conventional long intermediate transmission shaft, which is economically advantageous.

In addition, by increasing the extra length of the transmission device using the tensioning device, the lifting stroke of the handling cylinder can be increased, and the degree of opening of the handling chamber can be increased to make work easier. Cleaning work can now be done more efficiently.

〔Example〕

As shown in FIG. 5, the threshing section is configured so that the harvested grain culm is supplied to a handling chamber 2 by a threshing feed chain 1 and threshed by a rotating handling drum 3, and is handled by the threshing feed chain 1. An endless chain-type waste straw conveying device 4 is provided at the rear of the handling room 2 to convey the threshed waste straw carried out from the chamber 2 to the rear of the machine and discharge it to the outside of the machine. Then, while the threshed material falling and being supplied from the handling room 2 through the receiving net 5 and the dust exhaust port 6 is transferred to the rear of the machine by the swinging sorting device 7, and while the sorting air supplied by the winnower 8 is applied. The sorting section is configured to separate grains and dust, and the dust is sucked together with the sorting wind by a rotating fan 9 and discharged to the outside of the machine, and a screw is configured to transport the first processed material from the sorting section to the outside of the machine. A conveyor 10 and a screw conveyor 11 for returning the second processed material from the sorting wind to the handling room 2 to be reprocessed are provided at the bottom of the sorting section, thereby forming a threshing device for a combine harvester. be.

As shown in FIGS. 3 to 5, the front wall portion 1
2. The upper part of the handling chamber 2 is formed by providing a rear wall part 13, a side wall part 14, and a swinging opening/closing type top wall part 15, and the handling barrel 3 is mounted on a rotation support shaft 16.
Furthermore, a guide rail 17 that enables the threshing feed chain 1 to clamp and transport the grain culm, and a straw cutting blade 1 on the handling port 18 side.
9, and a straw cutting blade 20 on the opposite side from the handling opening 18
The movable side structure to which each of the handles 2 and 2 are attached is moved up and down around an axis P that is located on the side opposite to the handling port 18 with respect to the handling cylinder 3 and is approximately parallel to the handling cylinder axis.
1, and configured to be able to be oscillated by
The structure is such that the handling cylinder 3 can be fixed in the raised position where it has come out of the handling chamber 2 by tension support by the telescopic support rod 22, and the lowered position where the handling cylinder 3 has entered the handling chamber 2. It is constructed so that it can be fixed with a hook 23. That is, in order to easily take the handling cylinder 3 in and out when cleaning the handling room, etc., the handling cylinder 3 is placed on the fixed side so as to be able to swing up and down around the axis P between the lowered use position and the raised removal position. It is attached to the structure 24.

2 and 4 to enable the handling cylinder 3 to be driven.
As shown in the figure, the engine 25 includes a belt type threshing clutch 26, a rotating shaft 27, and a bevel gear mechanism 28.
The traveling aircraft is linked via the (not shown)
a driving belt pulley 29 attached to the fixed side structure 24; and an intermediate belt pulley 30 attached to the fixed side structure 24.
Also, by winding two transmission belts 34, 34 across the idle belt pulleys 31 and 32 and the handling drum driving belt pulley 33 attached to the front end of the rotating support shaft 16 for the handling drum. The rotational force of the engine for driving the handling barrel is transmitted to the portion of the rotating support shaft 16 that projects forward from the handling barrel 3.

In order to enable the operation of the waste straw conveying device 4,
As shown in Figs. 1 and 2, at the rear of the handling chamber 2, a belt pulley 38 of a conveying device drive shaft 37 provided on the waste straw conveying device 4 is connected to a chain procket 35 at the conveying start end side of the waste straw conveying device 4 via a bevel gear mechanism 36 and is substantially parallel to the rotating support shaft 16 for the handling drum.
A power transmission belt 42 is wound around a power take-off belt pulley 39 attached to the rotating support shaft 16 and an idle belt pulley 41 attached to an idle shaft 40 that also serves as a rotating support shaft attached to the fixed structure 24 so as to pivotally support the structure for forming the upper part of the handling chamber.
A tension wheel 45 as an example of a tensioning device is attached to the driving shaft 37 of the transmission belt 42 via a swing support arm 43 so as to be swingable, and is biased to swing by a tension spring 44. A tension wheel 45 is applied to a location located between the rotation support shaft 16 for the handling drum and the idle shaft 40 on the lower belt portion 42a of the upper belt portion and the lower belt portion of the transmission belt 42 located between the drive shaft 37 and the idle shaft 40, so as to apply a tension that enables transmission to the transmission belt 42. In other words, the rotation force for driving the handling drum is transmitted to the rear of the handling chamber 2 by the rotation support shaft 16 for the handling drum, and is transmitted to the conveyor drive shaft 37 by the transmission belt 42.

As shown in FIG. 1, the conveyor drive shaft 37, the rotating support shaft 16 for the handling cylinder, and the idle shaft 40 are arranged in the direction of the handling cylinder axis when the handling cylinder 3 is in the lowered use position. When viewed, the rotation support shaft 16 for the handling cylinder is arranged in a triangular arrangement with the rotation support shaft 16 located at the lowest level. The tension wheel body 45 is
It is configured to bend the lower belt portion 42a inward of the transmission belt loop when the handling cylinder 3 is in the lowered use position, thereby raising the handling cylinder 3 from the lowered use position. It is possible to do this to a relatively high level while the transmission belt 42 is attached.

That is, by the triangular arrangement and the belt bending operation by the tension wheel 45, an allowance length is created that allows the transmission belt 42 to be pulled upward from the conveyor drive wheel 37 and the idle shaft 40 while being wrapped around them. It is attached to the transmission belt 42. Then, as shown by the imaginary line in Figure 1,
When the handling cylinder 3 is lifted, the rotating support shaft 16 for the handling cylinder comes into contact with the upper belt portion via the power take-off belt pulley 39, and the transmission belt 42 is pulled up; Transmission belt 4
2 has the above-mentioned extra length, the rotation support shaft 16 pulls the transmission belt 42 upwardly from the idle shaft 40 and the conveyance device drive shaft 37 while coming out of the handling chamber 2.

Incidentally, reference numerals 46 and 47 shown in FIG. 1 are belt detachment prevention devices for preventing the transmission belt 42 from coming off from the belt pulley 38 for driving the conveying device or the idle belt pulley 41 when the handling cylinder is raised.

[Another example]

In addition to using the above-mentioned pivot shaft for the structure as the idle shaft 40, a special shaft for exclusive use may be provided on a different axis from the axis P for swinging the handling barrel.

A transmission chain may be used instead of the transmission belt 42, and these are collectively referred to as a wrap-around transmission device 42.

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

The drawings show an embodiment of the threshing device for a combine harvester according to the present invention, FIG. 1 is a front view of the transmission section for the straw removal conveying device, FIG. 2 is a transmission system diagram, and FIG. 3 is a partial cutaway of the threshing section. FIG. 4 is a front view of the upper part of the threshing device, and FIG. 5 is a partially cutaway side view of the entire threshing device. 2... Handling room, 3... Handling cylinder, 4... Straw removal conveyance device, 16... Handling cylinder rotation support shaft, 18... Handling port, 37
... Drive shaft, 40 ... Idle shaft, 42 ... Wrap transmission device, 45 ... Tension device, P ... Axis core.

Claims (1)

[Scope of claims for utility model registration] 1. Located on the side opposite to the handling port 18 with respect to the handling cylinder 3,
The handling cylinder 3 is mounted so as to swing up and down around an axis P that is substantially parallel to the handling cylinder axis, and the handling cylinder is attached to a portion of the handling cylinder rotation support shaft 16 that projects forward from the handling cylinder 3. A waste straw conveying device 4 configured to transmit driving force and conveying threshed waste straw to the rear of the machine body is provided at the rear of the handling room 2, and a drive shaft 37 of the waste straw conveying device 4 is connected to the waste straw conveying device. 4 is a threshing device for a combine provided on the conveyance starting end side, and at the rear of the handling chamber 2, the drive shaft 37 and the handling barrel rotation support shaft 16 are connected to each other.
and the idle shaft 40 are arranged in a triangular arrangement in which the handling cylinder rotation support shaft 16 is located at the lowest level when viewed in the direction of the handling cylinder axis when the handling cylinder 3 is in the lowered use position, A winding transmission device 42 is wound around the drive shaft 37, the handling barrel rotation support shaft 16, and the idle shaft 40, and
Tensioning device 4 that applies tension to the winding transmission device 42
5, of the upper transmission part and the lower transmission part 42a located between the drive shaft 37 and the idle shaft 40 of the wrapping transmission 42 when the handling cylinder 3 is in the lowered use position. A threshing device for a combine harvester in which a lower transmission part 42a is bent inward of a winding transmission loop. 2. The threshing device according to claim 1, wherein the idle shaft 40 is arranged concentrically with an axis P for vertically swinging the handling cylinder 3.