JPH0525398Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a feeder house drive shaft structure in a combine harvester.

(b) Conventional technology Conventionally, for example, in a general-purpose combine harvester, a feeder house and a wide cage installed inside the feeder house were installed between a reaping device installed at the front of the machine and a threshing device installed at the top of the machine. A conveyance device is provided that includes a conveyor and a conveyor drive mechanism for rotating the conveyor. and,
With such a conveying device, the grain culm harvested by the reaping device can be sent to the threshing device via the reaping drum and the conveyor, and can be threshed by the handling cylinder in the threshing device.

In addition, in such a configuration, the conveyor drive mechanism has a feeder house driven shaft and a feeder house drive shaft pivotally supported at the lower grain inlet and the upper grain outlet of the feeder house, respectively, and a sprocket wheel is fixed to each shaft. , by winding a conveyor between both sprocket wheels.

(c) Problems to be solved by the invention However, conventionally, the feeder house drive shaft in such a conveyance device is exposed between the sprocket wheels fixed to both ends, and therefore the conveyance operation is carried out in this area. A large amount of rice culms, buckwheat culms, etc. were wrapped around the inside, which caused clogging at the threshing entrance and the feeder house joint.

An object of the present invention is to provide a feeder house drive shaft structure for a combine harvester that can solve the above problems.

(d) Means for solving the problem The present invention provides a combine harvester in which the front end of the feeder house is connected to the rear of the reaping device and the threshing device is connected to the rear end of the feeder house. A plurality of wrap prevention plates such as culms extending radially from the axis of the supported feeder house drive shaft are fastened to the supported feeder house drive shaft using a pair of half-split fastening fittings surrounding the feeder house drive shaft. This relates to a feeder house drive shaft structure in a combine harvester.

(E) Effect In the present invention, the harvested grain culm cut by the cutting blade of the reaping device is transported and supplied to the handling barrel of the threshing device by the feeder house forming the conveying device, and then threshed by the threshing device. . The threshed material then reaches the shaking sorting device,
The sorted grains are sorted and stored in a grain tank, and straw waste and the like are discharged to the outside.

Therefore, in the present invention, the feeder house drive shaft, which is pivotally supported at the rear upper end of the feeder house, is equipped with a plate to prevent the grain culm from wrapping around the grain culm, etc., so that the grain culm, etc., transferred from the reaping device to the threshing device is not attached to the drive shaft. Wrapping can be effectively prevented.

(F) Effects With the configuration and operation described above, the present invention has the following effects.

In this invention, the feeder house drive shaft is provided with a plate to prevent grain culms from wrapping on its circumferential surface.
Wrapping of grain culms around the drive shaft can be prevented as much as possible.

It has an extremely simple structure in which the grain culm wrapping prevention plate is connected to the feeder house drive shaft via a pair of half-shaped fasteners, so it can be manufactured at low cost.
Furthermore, it is easy to attach and remove the grain culm etc. wrapping prevention plate.

Since the grain culm wrapping prevention plate also rotates integrally with the feeder house drive shaft, the grain culm can be more smoothly fed from the feeder house to the handling cylinder.

That is, the grain culm, etc. wrapping prevention plate that rotates integrally with the feeder house drive shaft can forcibly feed the grain culm into the handling barrel through its rotation, and also,
The wind generated by the rotation of the grain culm wrapping prevention plate,
The air inside the handling barrel is connected, and dust is sucked in from the feeder house, preventing dust from leaking outside.
Dust resistance can be improved.

(G) Examples The present invention will be explained in detail below based on examples shown in the attached drawings.

Figures 1 and 2 show a general-purpose combine harvester, in which a machine body 1 that runs on crawlers 2 has a screw-shaped handling cylinder 3, and a net-like structure such as a clamp net is attached below the handling cylinder 3. Threshing device 5 with 4
A reaping device 7 is supported in front of the machine body 1 so as to be movable up and down via a hydraulic cylinder 8, while a threshing device 5 is provided on the side of the threshing device 5. A grain tank 9 is provided to store the grains threshed in the tank 9. A cabin-type driver's seat 10 having a driving operation section inside is provided in front of the tank 9, and an engine is installed in the rear of the tank 9. It is equipped with.

The reaping device 7 includes a platform 14 having a header 13 for taking in uncut crops, a reciprocating cutting blade 15 attached to the front of the platform 14, and a crop rake disposed behind the cutting blade 15. drum 16 and the platform 14
It consists of a crop raking reel 18 supported above via a hydraulic cylinder 17 so as to be able to rise and fall,
Between this reaping device 7 and the threshing device 5,
A conveying device 21 with a conveyor 20 for conveying to the reaping device 7 is provided.

As shown in FIGS. 2 and 3, this conveying device 21 is located inside a feeder house 22, which has one end connected to the rear part of the platform 14 and the other end connected to the supply port to the handling cylinder 3 of the threshing device 5. A pair of drive sprocket wheels 23, 23 for driving the conveyor 20 are disposed at the rear, and a feeder house driven drum 25 having driven sprocket wheels 24, 24 on both sides is disposed at the front. Drive sprocket wheel 23, 2
3 and the feeder house driven drum 25, a pair of drive chains 26, 26 facing each other with a wide interval are mainly wound around the drive sprocket wheels 23, 23 and the driven drum 25.
5, a tension body 28 is provided above the middle part between the conveyor 20 and the conveyor 20, and includes a tension roller 28b having a tension roller support shaft 28a for applying tension to the drive chains 26, 26 of the conveyor 20.

Note that 29 is an inspection window provided on the upper wall of the feeder house 22, and a transparent glass 30 is provided in the inspection window 29 so as to be detachable or openable.

In this way, the harvested grain culms are harvested by the cutting blade 15 of the reaping device 7, raked by the crop raking drum 16, and conveyed and supplied into the threshing device 5 by the conveyor 20 of the conveying device 21. The grain is threshed by the handling cylinder 3.

The material threshed on the threshing drum 3 passes through the reticulate body 4 onto the oscillating sorting device 6 where it is sorted. The sorted grains are supplied to and stored in a grain tank 9, while straw chips and the like are discharged to the outside.

Therefore, in the combine harvester conveying device configured as described above, the present invention has the advantage that the feeder house 22
On the feeder house drive shaft 32 pivotally supported at the upper end of the
This drive shaft 32 is characterized by a structure that includes a means for preventing grain culms and the like from being wrapped around the drive shaft 32.

The same configuration will be specifically explained below with reference to FIGS. 2 to 4.

As shown in FIGS. 2 and 3, the feeder house drive shaft 32 has both ends connected to the feeder house 2.
Bearings 33, 3 provided on both side walls 22a, 22b of 2
3, and furthermore, a power transmission pulley 34 is fixed to an extending portion on one side thereof.
Therefore, by rotating the pulley 34,
The feeder house drive shaft 32 can be rotated integrally.

Further, the feeder house drive shaft 32 has a pair of drive sprocket wheels 23, 23 attached to positions on both sides within the feeder house 22, and the conveyor 20 is attached to the sprocket wheels 23, 23 as described above. It is wrapped.

Further, the feeder house drive shaft 32 has a plurality of grain culm wrapping prevention plates 35 removably attached between the drive sprocket wheels 23 and 23 using a pair of half-split fastening fittings 36 and 37. ing.

This will be explained in detail with reference to FIG. 4 which is an exploded explanatory diagram. The grain culm etc. wrapping prevention plate 35 extends in the axial direction of the feeder house drive shaft 32 and faces 180° in the circumferential direction. It is formed from two long rectangular plates arranged at different positions.

Each grain culm wrapping prevention plate 35 has its inner edge directed toward the axis of the feeder house drive shaft 32, and its outer edge extends radially outward from the coaxial line.

Further, a pair of half-split fastening fittings 36 and 37 provided for fastening the grain culm etc. wrapping prevention plate 35 to the feeder house drive shaft 32 both have a semicircular cross section with an inner diameter approximately equal to that of the feeder house drive shaft 32. When combined, the feeder house drive shaft 32 can be surrounded.

Further, the half-shaped fastening fittings 36, 37 have fastening flange portions 36a, 37 on both side edges thereof, respectively.
A is provided protrudingly.

The one-side half-shaped fastening fitting 36 is constructed by fixing the fastening flange portions 36a provided on both edges to the outer surfaces of the pair of grain culm wrapping prevention plates 35, 35 by welding or the like. Both grain culms, etc. wrapping prevention plate 3
5 and 35 are integrally connected.

Moreover, the one-side half-split fastening fitting 36 has a screw hole 38 for a fastening bolt.

On the other hand, the other side half-shaped fastening fitting 37 is configured as a single member, but the fastening flange portion 3
7a has a fastening bolt insertion hole 39 provided in the fastening flange portion 36a of the one-side half-split fastening fitting 36 at a position aligned with the fastening bolt screw hole 38.

With this configuration, the wrapping prevention plate 3 for both grain culms, etc.
5 and 35 to the feeder house drive shaft 32, first, the half-shaped cross section of the one side half-shaped fastening fitting 36 has both grain culm wrapping prevention plates 35, 35 fixed to the both side fastening flange parts 36a. is brought into contact with the outer circumferential surface of the feeder house drive shaft 32, and the half-shaped cross section of the other half-shaped fastening fitting 37 is brought into contact with the feeder house drive shaft 32 in a facing state, and then
The fastening flange portions 36a and 37a are overlapped, and then the fastening bolt 40 is passed through the fastening bolt insertion hole 39 and then screwed into the fastening bolt screw hole 38.
As a result, both grain culm wrapping prevention plates 35, 35 are tightly fastened to the feeder house drive shaft 32.

As described above, in this embodiment, the feeder house drive shaft 32 has grain culm etc. wrapping prevention plate 3 on its circumferential surface.
5 and 35, the same drive shaft 32 of the grain culm
It is possible to prevent it from being wrapped around as much as possible.

In addition, since the grain culm etc. wrapping prevention plates 35, 35 can be attached to the feeder house drive shaft 32 only by using the pair of half-split fasteners 36, 37, they can be manufactured at low cost, and , easy to install and remove.

Furthermore, since the grain culm wrapping prevention plates 35, 35 also rotate together with the feeder house drive shaft 32, the grain culm can be supplied from the feeder house 22 to the handling cylinder 3 more smoothly. That is, the grain culm wrapping prevention plates 35, 35, which rotate integrally with the feeder house drive shaft 32, can forcibly feed grain culms into the handling cylinder 3 through their rotation, and can also The wind generated by the rotation of the culm wrapping prevention plates 35, 35 communicates with the wind inside the handling cylinder 3, and dust is sucked in from the feeder house 22, preventing dust from leaking outside. can improve sexual performance.

In the above embodiment, the gap between both ends of the grain culm etc. wrapping prevention plates 35, 35 and the drive sprocket wheels 23, 23 is preferably 0.5.
Should be less than mm.

Furthermore, other structural features of the illustrated embodiment are as follows.

As shown in FIG. 2, the feeder house 22 is
The feeder house drive shaft 32 is the rotation center, and the reaping device 7 is rotated in the vertical direction by the drive of the hydraulic cylinder 8.

Therefore, when the feeder house 22 is rotated vertically about the feeder house drive shaft 32 (particularly when rotated upward), there is a gap between the lower edge of the upper opening of the feeder house 22 and the supply port of the handling cylinder 3. A gap will be created. Therefore, conventionally, the upper end opening of the feeder house 22 is
In order to improve the airtightness between the feeder house 22 and the supply port of the handling cylinder 3, a feeder house sheet metal rubber 45 is provided.

However, conventionally, such feeder house sheet metal rubber 45 has its base end attached to the feeder house 22.
While connected to the upper end opening, its tip is in contact with the supply port wall of the handling cylinder 3, and its leading edge 45a is further away from the tip action starting point 47 of the handling cylinder impeller 46. It extends inside the trunk 3.

Therefore, the feeder house sheet metal rubber 45 is deformed by the insertion force of the grain culms and grains flowing into the handling cylinder 3 from the feeder house 22, and the feeder house sheet metal rubber 45 is deformed by the deformation.
There was a problem that the tip of No. 5 rose up and the paddy etc. leaked out.

Therefore, in this embodiment, as shown in FIG.
The feeder house sheet metal rubber 45 is set so that when the feeder house 22 is at the lowest position, its tip is approximately on the same line as the tip action starting point 47 of the handling cylinder impeller 46, or is located outside by x from the same starting point 47. At the same time, the feeder house 22 is set in the uppermost position so that its tip does not come off the inlet supply plate 48 of the handling cylinder 3.

With this setting, the insertion force of grain culms and grains due to the acting force of the handling cylinder impeller 46 is transferred to the inlet supply plate 4.
8 and can prevent the action on the feeder house sheet metal rubber 45, preventing grain culms and grains from penetrating into the underside of the feeder house sheet metal rubber 45, thereby preventing grain leakage. can be prevented.

Note that the virtual line indicates the position of the feeder house metal rubber 45 when the feeder house 22 is rotated upward.

Furthermore, in this embodiment, feeder house 2
As shown in FIG.
And a feeder house upper seal 51 is provided, which cooperates with the feeder house sheet metal rubber 45 described above to seal the upper end opening of the feeder house 22 and the threshing, regardless of whether the feeder house 22 moves up or down. The communication portion of the device 5 with the supply port can be completely sealed to completely prevent paddy leakage.

In addition, the drive chain 26 of the feeder house 22
If an oil-free chain such as a plastic chain is used as the engine, the noise during driving will be reduced.
It is also convenient because the oil of the drive chain 26 does not adhere to the harvested product.

Furthermore, it is preferable that the bottom plate 22c of the feeder house 22 and the bottom plate 14a of the platform 14 be made of stainless steel or other non-rusting steel plates.This makes it possible to improve the durability of the feeder house 22 and the platform 14. It is possible to improve the conveyance performance of grain culms within the container.

Furthermore, the bottom plates of the No. 1, No. 2, horizontal screw conveyors, etc. in the threshing device 5, the bottom plate of the lower horizontal conveyor of the grain tine (sliding type and can be cleaned), swing fins, etc. are also made of non-rust steel plates such as stainless steel plates. This is preferable, and this makes it possible to improve the durability of the bottom plate, etc., improve the conveying performance by improving the slippage, and also prevent the grains from getting dirty during soybean harvesting.

In addition, to explain other components in the illustrated embodiment, in FIG. 2, 55 is:
In order to drive the cutting blade 15, crop raking drum 16, crop raking reel 17, etc. attached to the platform 14 disposed in front of the feeder house 22, a power transmission shaft attached to the front end of the side wall 22a of the feeder house 22 is used. be.

The power is transmitted to the same power transmission shaft 55 as follows.
This is accomplished by winding an endless chain 58 between a sprocket wheel 56 fixed to one end of the feeder house drive shaft 32 and a sprocket wheel 57 fixed to the power transmission shaft 55.
Note that 59 is a tension sprocket wheel for tensioning the endless chain 58.

Further, 60 is a plate for preventing wrapping of grain culms, etc., which is disposed on the opposite side of the grain culm intake side of the feeder house driven drum 25.
This is provided to effectively prevent the grain culm from wrapping around the grain 5.

[Brief explanation of the drawing]

Fig. 1 is an overall front view of a combine harvester having a feeder house drive shaft structure according to the present invention, Fig. 2 is a sectional side view of a conveying device equipped with the same feeder house drive shaft, and Fig. 3 is a view taken from the arrow shown in Fig. 2 - line. A sectional view, FIG. 4 is an exploded perspective view of the feeder house drive shaft structure, and FIG. 5 is an enlarged explanatory view of the connecting portion between the feeder house and the threshing device. In the figure, 5... threshing device, 7... reaping device, 22
... Feeder house, 32 ... Feeder house drive shaft, 35 ... Grain culm etc. wrapping prevention plate, 36, 37 ...
…Half-split fastening fittings.

Claims (1)

[Claim for Utility Model Registration] In a combine harvester in which the front end of a feeder house 22 is connected to the rear of the reaping device 7, and the threshing device 5 is connected to the rear end of the feeder house 22, the combine harvester is pivoted to the rear end of the feeder house 22. A plurality of grain culm wrapping prevention plates 35 are provided on the feeder house drive shaft 32 and extend radially from the axis of the drive shaft 32.
A feeder house drive shaft structure in a combine harvester, characterized in that the feeder house drive shaft 32 is fastened using a pair of half-split fastening fittings 36 and 37 surrounding the feeder house drive shaft 32.