JPH0525397Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a chain tension structure in a feeder house of 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 conveyor and a tensioning body having a tension shaft that applies tension to the drive system of the conveyor are provided, and the grain culm harvested by the front reaping device is transferred to the reaping drum and the conveyor constituting the reaping device. The grain is sent to the threshing device through the threshing device, and is threshed by a handling cylinder in the threshing device.

(c) Problems to be solved by the invention By the way, in the conventional conveying device described above, the harvested grain culm is transferred to the handling cylinder by the conveyor and taken into the handling chamber by the handling cylinder. The grain culms transferred by the conveyor cannot be completely taken into the handling chamber, and some of the grain culms are carried along with the conveyor to the non-transfer side of the conveyor.

During the rotational transfer, the grain culms get caught in the shape of a bridge on the tension shaft installed horizontally in the feeder house. Grain culms that are stuck to the tension shaft may fall down at once, blocking the transportation path and making it difficult to transfer the grain culms, or the grain culms that are caught on the tension shaft may fall all at once, causing a large number of grain culms to fall onto the handling barrel side. This has caused problems such as clogging in transport passages and handling rooms.

The object of the present invention is to provide a chain tension structure in a feeder house of a combine harvester that can solve the above problems.

(d) Means for solving the problem The present invention is a combine harvester in which a conveyor is disposed in a feeder house interposed between a reaping device and a threshing device, and the drive chain of the conveyor is tensioned with a tension body. a tension roller support shaft with both ends of the tension body pivoted to both side walls of the feeder house;
Tension rollers are rotatably attached to both ends of the support shaft, anti-wrapping rings are placed on both sides of each tension roller and fixed to the tension roller support shaft, and the wrapper is located inside the tension roller. The present invention relates to a chain tension structure in a feeder house of a combine harvester, which is characterized by comprising a cylindrical wrap prevention cover installed between prevention rings.

(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, when the grain culms harvested by the harvesting device are transferred to the handling barrel via the conveyor,
Grain culms that are not transferred to the handling cylinder side but are carried along with the conveyor to the non-transfer side of the conveyor and fall on the non-transfer side are removed by a tension roller support shaft, which is rotatably attached to the support shaft. A cylindrical anti-wrapping cover installed between the rollers, an anti-wrapping ring arranged on both sides of each tension roller and fixed to the tension roller support shaft, and an anti-wrapping ring on the inside of the tension roller. Since it is covered, it does not get caught on the tension roller support shaft, and it is possible to reliably prevent grain culms from clogging the conveyance path or inside the handling cylinder.

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

In this invention, tension bodies are arranged on a tension roller support shaft whose both ends are pivoted to both side walls of the feeder house, a tension roller rotatably attached to both ends of the support shaft, and on both sides of each tension roller. At the same time, the structure consists of an anti-wrapping ring fixed to the tension roller support shaft and a cylindrical anti-wrap cover installed between the anti-wrapping rings on the inside of the tension roller, so the tension support shaft can be used with a small diameter. Grain culms are less likely to get caught on the tension body compared to the case of 2. Therefore, it is possible to reliably prevent grain culms from clogging the conveyance path or inside the handling barrel due to the grain culms getting caught on the tension body. I can do it.

With the exception of the tension roller, both the anti-wrapping ring and the anti-wrap cover are fixed to the tension roller support shaft, so it is possible to effectively prevent grain culms from wrapping from this side as well.

Since the tension roller is rotatably attached to the tension roller support shaft, the effect of preventing the grain culm from wrapping can be achieved without interfering with the smooth movement of the drive chain.

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

Figure 1 shows a general-purpose combine harvester, which has a machine body 1 that is driven by crawlers 2, a screw-shaped handling cylinder 3, and a net-like body 4 such as a clamp net below the handling cylinder 3. A threshing device 5 and a swinging sorting device 6 are provided, and a reaping device 7 is supported in front of the machine body 1 so as to be vertically movable via a hydraulic cylinder 8. A grain tank 9 for storing grains threshed by the threshing device 5 is provided, and in front of this grain tank 9,
A cabin-type driver's seat 10 equipped with a driving operation section is provided, and an engine is mounted behind the tank 9.

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 has a feeder house 22 connected at one end to the rear part of the platform 14 and at the other end connected to the supply port to the handling cylinder 3 of the threshing device 5. Inside and behind,
A pair of driving sprocket wheels 23, 23 for driving the conveyor 20 are disposed in front, and a driven drum 25 having driven sprocket wheels 24, 24 on both sides is disposed, respectively. 23, 23 and the driven drum 25, a pair of driving chains 26, 26 facing each other with a wide interval are wound around them, and these driving sprocket wheels 23, 2
A tensioning body 28 for applying tension to the drive chains 26, 26 of the conveyor 20 is provided above the intermediate portion between the drive chain 3 and the driven drum 25.

Reference numeral 29 denotes 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 processed material that has been threshed in the handling barrel 3 passes from the net-like body 4 onto the swinging sorting device 6, and is sorted in the swinging sorting device 6, and the sorted grains are transferred to the grain tank 9. The straw is supplied and stored, and straw waste etc. are discharged to the outside.

Therefore, in the combine conveyor device configured as described above, the present invention provides a tension body 28 that applies tension to the drive chain 26 of the conveyor 20.
It is characterized by its structure.

That is, as shown in FIGS. 4 and 5, in this embodiment, the tension body 28 has a tension roller support shaft 28a whose both ends are non-rotatably supported on both side walls 22a and 22b of the feeder house 22. , tension rollers 28b, 28b rotatably attached to both ends of the support shaft 28a, and each tension roller 2.
Anti-wrapping rings 28c are arranged on both sides of the tension roller support shaft 28a and fixed to the tension roller support shaft 28a.
28d, and a cylindrical anti-wrap cover 28e installed between anti-wrap rings 28d, 28d on the inside of the tension rollers 28b, 28b.

In the above configuration, the tension roller 28b,
28b, anti-wrapping rings 28c, 28c, anti-wrap rings 28d, 28d, and anti-wrap cover 28
Both of them have a diameter significantly larger than that of the tension roller support shaft 28a, and have approximately the same diameter.

In this way, the tension rollers 28b, 28b
etc. have a large diameter, and since the tension rollers 28b, 28b rotate, it is possible to effectively prevent the grain culm from wrapping around the tension body 28.

Further, since the tension rollers 28b and 28b rotate, the drive chain 2 moving on the circumferential surface thereof
6 can be moved smoothly.

In addition, in the structure of the tension body 28, each tension roller 28b is provided with a diameter-reducing stepped portion on both sides, as shown in FIG.
Corresponding ends of the wrapping prevention rings 28c, 28c and the wrapping prevention rings 28d, 28d are fitted in an overlapping state and slidably.

With this configuration, it is possible to prevent grain culms from entering the tension body 28 and damaging the bearing portion 28f interposed between the tension rollers 28b, 28b and the tension roller support shaft 28a. can.

Furthermore, seal plates 28g are provided on both sides of the bearing portion 28f.
It is possible to further reliably prevent grain culms from entering the bearing portion 28f in cooperation with the above-mentioned overlapping structure.

In addition, in this embodiment, the anti-wrapping ring 28
c, 28d are both fixed sleeves 28h, 2
8i to the tension roller support shaft 28a.

On the other hand, as shown in FIG.
is connected to the winding prevention ring 28d by a connecting bolt 28e-3. Therefore, the wrapping prevention cover 28e can be easily attached to the wrapping prevention rings 28d, 28.
It can be attached to d.

In addition, in FIG.
This is a fastening bolt for fixing to 8a.

Further, in this embodiment, the feeder house drive shaft 32 pivotally supported at the upper end of the feeder house 22 is provided with means for preventing grain culms or the like from being wrapped around the drive shaft 32.

That is, as shown in FIGS. 2 and 3, the feeder house drive shaft 32 has both ends mounted on bearings 3 provided on both side walls 22a and 22b of the feeder house 22.
It is rotatably supported on 3 and 33, and furthermore,
A rotary pulley 34 is fixed to one side of the extending portion. Therefore, by rotating the pulley 34, the feeder house drive shaft 32 can be rotated integrally.

Furthermore, the feeder house drive shaft 32 has a pair of driving 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.

Furthermore, 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.

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
The structure of the tension body 28 described above and the wrapping prevention plates 25i, 25i attached to the house driven drum 25 work together to ensure that the conveyor 20 is secured as much as possible. can be driven,
The transportation work of grain culms etc. can be made more reliable.

In addition, to explain other configurations in the illustrated embodiment, in FIG.
6. A power transmission shaft attached to the front end of the side wall 22a of the feeder house 22 to drive the crop raking reel 17 and the like.

The power is transmitted to the power transmission shaft 55 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. It is done by doing. 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 grain culms from wrapping around the grain.

[Brief explanation of the drawing]

Fig. 1 is an overall front view of a combine harvester having a chain tension structure of a feeder house according to the present invention, Fig. 2 is a sectional side view of a feeder house equipped with the same chain tension structure, and Fig. 3 is a view taken along the line shown in Fig. 2. A cross-sectional view, FIG. 4 is an enlarged explanatory view of the main part of the tension body, and FIG. 5 is a cross-sectional view taken along the line of FIG. 4. In the figure, 5... threshing device, 7... reaping device, 20
...Conveyor, 22 ...Feeder house, 22
a, 22b...Side wall, 26...Drive chain, 2
8...Tension body, 28a...Tension roller support shaft, 28b, 28b...Tension roller, 28
c, 28d... wrapping prevention ring, 28e... wrapping prevention cover.

Claims (1)

[Claim for Utility Model Registration] A combine harvester in which a conveyor 20 is disposed in a feeder house 22 interposed between a reaping device 7 and a threshing device 5, and a drive chain 26 of the conveyor 20 is tensioned by a tensioning body 28, The tension body 28 is attached to a tension roller support shaft 28a whose both ends are attached to both side walls 22a and 22b of the feeder house 22, and tension rollers 28b and 28b which are rotatably attached to both ends of the support shaft 28a.
and anti-wrapping rings 28c and 28d arranged on both sides of each tension roller 28b and fixed to the tension roller support shaft 28a, and anti-wrapping rings 28d and 28d that are inside the tension rollers 28b and 28b. A chain tension structure in a feeder house of a combine harvester, characterized in that it is constructed of a cylindrical anti-wrapping cover 28e installed in the feeder house of a combine harvester.