JPH0221904Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention has the drive rotation shaft of the swinging sorting device and the drive rotation shaft of the sorting dust discharge fan horizontally mounted on the rear end side of the threshing sorting device, and the threshing feed chain drive This invention relates to a power transmission structure of a combine harvester equipped with a sprocket.

Conventionally, in the combine harvester mentioned above, the transmission system to the fan drive shaft and chain drive sprocket can be shortened, but since the sorting device drive shaft is located relatively close to these, the threshing feed chain of the threshing sorting device is Power is transmitted from the sorting device drive shaft on the lateral outside of the threshing device, and both the fan drive shaft transmission structure and the sprocket transmission structure are located on the lateral outside of the threshing sorting device. The drive speed of the fan needs to be faster than the sorting device drive shaft, and the drive speed of the threshing feed chain needs to be slower than the sorting device drive shaft, so both speed change mechanisms for speed increase and deceleration are required. This has the disadvantage that the transmission structure becomes large. For example, when installing a processing device such as a cylinder type cutter for threshing straw behind the threshing feed chain, it is necessary to combine the threshing feed chain and the threshing feed chain due to the transmission structure. This creates a large front-to-back gap between the machine and the threshing sorting device, which tends to cause poor delivery of waste straw, and creates a large lateral gap between the threshing and sorting device, which increases the width of the machine.

The purpose of this invention is to shorten the transmission system for the fan drive shaft and feed chain sprocket, while also making the transmission configuration compact, which is located laterally outside on the feed chain side of the threshing sorting device. The purpose is to remodel it so that it looks like this.

In order to achieve the object, in the transmission structure of the combine harvester described above, the present invention provides a speed increasing transmission mechanism from the sorting device drive rotating shaft to the fan drive rotating shaft on the side of the threshing feed chain of the threshing sorting device. A reduction transmission mechanism from the fan drive rotating shaft to the chain drive sprocket is configured in a gear type, and is arranged on the lateral outside of the threshing feed chain side of the threshing sorting device. It is characterized by being set up.

In other words, increased speed is transmitted from the sorting device drive shaft to the fan drive shaft on the lateral outside of the threshing and sorting device opposite to the threshing feed chain side, and from the fan drive shaft to the chain on the lateral outside of the threshing and sorting device on the threshing feed chain side. Since gear reduction is transmitted to the sprocket, the dust removal fan can be driven at a predetermined high speed even if the fan drive shaft is linked to the sorting device drive shaft located near it. The feed chain can be driven at a predetermined low speed even if it is linked to the fan drive shaft located at the In addition, it can be constructed compactly by using gears. Therefore, the transmission system for each of the dust exhaust fan and the threshing feed chain can be shortened, and the structure can be easily configured. It can be made compact with only a gear type reduction structure, and it can be advantageous, for example, when installing a waste straw processing device, it can be placed as close as possible to the side wall of the threshing feed chain and the threshing sorting device.

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

As shown in FIG. 1, a reaping section 4 consisting of a lifting device 1 for the planted grain culm, a reaping device 2, a device 3 for conveying the reaped grain culm rearward, etc. A combine harvester is constructed by connecting to the front part of a crawler-type traveling machine body having a threshing sorting device 5 and a cylinder type cutter 6 for shredding the threshed waste straw and discharging it rearward.

As shown in FIG. 2, the threshing and sorting device 5 includes a handling cylinder 9 that rotates and supplies grain culms from the reaping section 4 to a handling chamber 8 through a threshing feed chain 7.
The threshing section is configured so that the threshed waste straw is carried out from the handling room 8 by the feed chain 7 and is supplied to the cylinder-type cutter 6, and the processed material from the handling room 8 is A sorting section is provided below the threshing section, which has a swinging sorting device 10 for the grain removal, a winnowing machine 11 that supplies sorting air, and a rotating fan 12 that discharges sorted dust to the outside of the machine together with the sorting air. A first screw conveyor 13 for transporting the first processed material out of the machine and a second screw conveyor 14 for returning the second processed material from the sorting section to the handling chamber 8 are provided at the bottom of the sorting section. .

The transmission structure for the threshing sorting device 5 is constructed as shown in FIG.

In other words, the engine 1
5 is transmitted to the drive rotation shaft 17 of the handling drum 9 via the transmission belt 16, and a transmission belt 19 is wound around the handling drum drive shaft 17 and the drive rotation shaft 18 of the winch 11. There is. and,
At the lateral outer side of the threshing sorting device 5 on the side of the threshing feed chain 7, the winnowing drive shaft 18 and the first
The drive rotation shaft 20 of the screw conveyor 13, the second
A power transmission belt 23 is wound around each of the drive shaft 21 of the screw conveyor 14 and the drive shaft 22 of the swing sorting device 10, which is installed horizontally through the rear end of the threshing sorting device. The drive rotation shaft 24 of the dust exhaust fan 12 is mounted horizontally on the rear end side of the threshing sorting device body, and the drive sprocket 25 of the threshing feed chain 7 is attached via the transmission case 26, and the threshing sorting device is On the lateral outer side of the device 5 opposite to the threshing feed chain 7 side, the rotational force of the sorting device drive shaft 22 is transmitted to the dust removal fan drive shaft 24 via a belt-type speed-up transmission mechanism 27,
At the lateral outer side of the threshing feed chain 7 side of the threshing sorting device 5, the rotational force of the dust removal fan drive shaft 24 is transferred to the chain via a gear type reduction transmission mechanism 28 which includes the transmission case 26 as shown in FIG. The signal is transmitted to the drive sprocket 25.

[Brief explanation of the drawing]

The drawings show an embodiment of the transmission structure of the combine harvester according to the present invention, and FIG. 1 is an overall side view of the combine harvester;
FIG. 2 is a longitudinal side view of the threshing sorting device, FIG. 3 is a transmission system diagram, and FIG. 4 is a sectional view of the speed reduction mechanism. 5... Threshing sorting device, 7... Threshing feed chain, 10... Rocking sorting device, 12... Dust discharge fan, 22... Sorting device drive rotating shaft, 24...
Fan drive rotation shaft, 25... Chain drive sprocket, 27... Speed-up transmission mechanism, 28... Deceleration transmission mechanism.

Claims (1)

[Scope of utility model registration request] A swinging sorting device 10 is provided on the rear end side of the threshing sorting device 5.
drive rotating shaft 22 and sorting dust discharge fan 1
This is a transmission structure of a combine in which two drive rotation shafts 24 are horizontally mounted and a threshing feed chain drive sprocket 25 is arranged. 27 is arranged on the lateral outer side of the threshing sorting device 5 opposite to the threshing feed chain 7 side, and a reduction transmission mechanism 28 from the fan drive rotation shaft 24 to the chain drive sprocket 25 is arranged.
The threshing sorting device 5 is configured in a gear type, and the threshing sorting device 5
A transmission structure of a combine harvester disposed on the lateral outer side of the threshing feed chain 7 side.