JPH06141657A - Thresher for head-feeding type combine harvester - Google Patents

Abstract

PURPOSE:To realize the prevention of residual threshing or recovery of free unhulled rice over a rack and simultaneously sufficiently prevent grain culms from tearing off and pulling out without regard to the thickness of a grain culm layer in a nipping conveyor in a head-feeding type combine harvester provided with the nipping conveyor for feeding reaped grain culms to a threshing chamber while conveying the reaped grain culms. CONSTITUTION:A nipping conveyor 9 for feeding reaped grain culms to a threshing chamber is formed from a pair of upper and lower driving type conveying chains (9a) and (9b) and a speed changer 13 for regulating the difference in speed of both the conveying chains (9a) and (9b) is installed. A sensor 14 for sensing the thickness of a grain culm layer conveyed with the conveying chains (9a) and (9b) is provided and a controller 15 for automatically operating the speed changer 13 so as to increase the speed difference between both the conveying chains (9a) and (9b) with increasing thickness of the grain culm layer based on the information from the sensor 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a threshing device for a self-removing combine, which is provided with a holding and transporting device for feeding a harvested culm to a handling room while transporting it.

[0002]

2. Description of the Related Art Conventionally, in order to form a holding and conveying device, a drive type conveying chain (so-called feed chain) is arranged below and a holding rail is arranged above, and a conveyance resistance projection formed on the holding rail is conveyed. There is one configured to act on the culm and move the grain culm layer up and down to disturb the leftovers and increase the recovery efficiency of the clams.

[0003]

However, the thickness of the grain culm layer in the squeezing and conveying device changes due to changes in the type of culm and growing conditions in the field, and in the protrusions for conveying resistance of the squeezing rail, the stalks of the culm layer are changed. Since the effect of disturbing the movement is almost constant, if the thickness of the grain culm layer increases, the effect of disturbing it becomes insufficient and it is impossible to realize unremoved prevention and clam recovery as desired, conversely,
When the thickness of the grain culm layer is reduced, the disturbing effect becomes excessive and tearing and pulling out of the grain culm are likely to occur, and it is difficult to achieve good threshing regardless of the thickness of the grain culm layer. There was room for improvement in terms of improving threshing performance. The object of the present invention is to realize good threshing, regardless of the thickness of the grain culm layer, which can sufficiently realize unremoved residue prevention and collection of clams and can sufficiently prevent tearing and pulling out of the grain culm. The point is to be able to.

[0004]

A feature of the present invention is that in a self-removing combine provided with a holding and conveying device for feeding a harvested culm to a handling room while conveying it, the holding and conveying device is provided as a pair of upper and lower drive-type conveyers. Formed with a chain, equipped with a transmission that adjusts the speed difference between both transport chains, equipped with a sensor that detects the thickness of the grain stalk layer transported by the transport chain, and based on the information from the sensor, the thickness of the grain stalk layer It is because a controller for automatically operating the transmission is provided so that the speed difference between the two conveyor chains becomes larger as the ratio becomes larger.

[0005]

In other words, the pair of upper and lower drive-type transport chains convey the culms, and the speed change mechanism adjusts the speed difference between the two transport chains, thereby increasing the speed difference between the two transport chains. The turbulent state of the grain culm layer can be adjusted so that the deviation between the upper layer portion and the lower layer portion of the grain culm layer becomes large and the disorder becomes large. Then, the thickness of the grain culm layer is detected by the sensor, and the turbulent state of the grain culm layer is automatically controlled by the automatic operation of the transmission by the controller so that the disordered state becomes larger as the grain culm layer becomes thicker. The thickness of the grain culm layer can be reduced by increasing the thickness of the grain culm layer and increasing the disturbing effect to prevent unhandled rice and recovery of clams as desired. If it is small, the disturbing effect will be small and tearing and pulling out of the grain can be reliably prevented.

[0006]

As a result, regardless of the thickness of the grain culm layer, it is possible to sufficiently prevent the unhandled and the grain rips from being torn off or pulled out, and it is possible to surely realize the sufficient recovery of the clam rice.
It has become possible to provide a self-removing combine that is far superior in threshing performance.

[0007]

【Example】

(Embodiment 1) As shown in FIG. 1, a crawler type traveling device 1
At the front of the vehicle body equipped with the
It is provided so that it can be moved up and down by swinging around the support shaft 4, and the planting grain culm raising device 5, the cutting blade 6, and the cut grain culm are supported by the stock harvesting transport mechanism 8A and the tip transport mechanism 8B in the mowing section 2. A transporting device 8 for sending to the starting end of the threshing device 7 in a sideways posture, and a sandwiching and transporting device 9 for feeding the grain culm in a sideways posture received from the transporting device 8 into the threshing device 7 while being transported backward, Lifting device 1 for the first product (grain) selected by threshing device 7
A bag-filling hopper 11 to be transported and collected at 0 is arranged on the side of the threshing device 7, and the boarding operation unit 1 is provided in front of the hopper 11.
2 are arranged to constitute a self-removing combine. Figure 2
As shown in FIG. 3, in order to form the holding and conveying device 9, a pair of upper and lower conveying chains 9a and 9b with conveying protrusions are rotatably driven, and the rotation speed of the upper conveying chain 9a is changed to change both conveying chains 9a. , 1b for adjusting the speed difference
3 is provided. Further, the sensor 14 for detecting the thickness of the grain culm layer conveyed by the conveying chains 9a, 9b by detecting that the holding rail 8a of the stock source conveying mechanism 8A in the conveying device 8 is displaced according to the amount of grain culm. With the sensor 1
A controller 15 is provided for automatically operating the transmission 13 such that the speed difference between the two transport chains 9a and 9b becomes larger as the grain culm layer becomes thicker on the basis of the information from 4. That is, the pair of upper and lower drive type transport chains 9a, 9b are used to transport the grain culms, and the transmission 13 is used to transport the both grain chains 9a, 9b.
By adjusting the speed difference of b, both transport chains 9
The turbulent state of the grain culm layer is adjusted so that the deviation between the upper and lower layers of the transported grain culm layer increases and the turbulence increases as the speed difference between a and 9b increases, and the thickness of the grain culm layer is adjusted. The sensor 14 to detect the transmission, and the controller 15 controls the transmission 13
By automatically adjusting the turbulence state of the grain culm layer as the thickness of the grain culm layer increases, the turbulence effect increases as the thickness of the grain culm layer increases. Is designed to prevent unhandled grain and to collect clams, and when the thickness of the grain culm layer is reduced, the disturbing effect is reduced to prevent tearing and pulling out of the grain culm. Although not shown, the lower transport chain 9b is fixed in position and
The upper conveying chain 9a is elastically urged downward so that it can be vertically displaced according to the thickness of the grain culm layer.

[Other Embodiment] The transmission 13 for adjusting the speed difference between the two carrier chains 9a and 9b may be a continuously variable type or a stepped type, and the lower carrier chain 9b or both carrier chains 9a. , 9b may be used. The thickness of the grain culm layer transported by the transport chains 9a and 9b is directly detected as the thickness of the grain culm layer in the transport device 8 as described above, and the traveling speed or the swing sorting of the sorting unit 10 is performed. It is also possible to indirectly detect the amount of processed material on the case. The grain culm set in the controller 15 for automatically operating the transmission 13 is such that the speed difference between the two transport chains 9a, 9b is increased as the thickness of the grain culm layer transported by the transport chains 9a, 9b is increased. The correlation between the layer thickness and the speed difference can be set appropriately.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 Side view of combine

FIG. 2 is an explanatory view of main parts

[Explanation of symbols]

 9 Holding carrier 9a, 9b Conveying chain 13 Transmission 14 Sensor 15 Controller

Claims (1)

[Claims] 1. A threshing device for a self-removing combine, which is provided with a holding and conveying device (9) for feeding a cut culm to a handling room while conveying the culm, and the holding and conveying device (9) is a pair of upper and lower drive type conveying chains. (9a), (9b), a transmission (13) for adjusting the speed difference between the two carrier chains (9a), (9b) is provided, and the carrier chains (9a), (9) are provided.
According to the information from the sensor (14), the sensor (14) for detecting the amount of grain culm transported per unit time by b) is provided, and the larger the amount of grain culm is, the more the both transport chains (9a), (9b). ) A threshing device for a self-removing combine, which is provided with a controller (15) for automatically operating the transmission (13) so as to increase the speed difference.