JPH0994024A - Front treating section of combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a front treating section of a combine harvester, capable of surely catching grain straws and preventing the grain straws from falling, even when the amount of the grain straws to be caught with the catching tines of an auxiliary raking and carrying device is small or even when the grain straws are placed near to the nearest position of the device. SOLUTION: Raking rotators 9A, 9B for rearward raking the root sides of raised and raked grain straws and carrying the root sides to the starting edge of a longitudinal carrier are disposed above a cutting device, and auxiliary raking and carrying devices 12A, 12B are extended from places above the raking rotators 9A, 9B to the front part of the cutting device in obliquely forward directions. The auxiliary raking and carrying devices 12A, 12B comprise endless rotation belts 14 equipped with catching tines 13, and the catching tines 13 are moved in postures inclined on the side of a travel direction with respect to the endless rotation belts 14 in a raking and carrying action region.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides, above the reaping device, a scraping rotary member that scrapes the root side of a culm that has been raised and mowed backward, and sends it to the starting end of a vertical conveying device. The present invention relates to a combine pretreatment unit in which an auxiliary scraping conveying device extends obliquely forward from above the scraping rotary member to the front of the harvesting device.

[0002]

2. Description of the Related Art Conventionally, in the above-mentioned pre-treatment section of the combine, the auxiliary scraping conveying device is constituted by an endless rotation band with a locking claw, and the locking claw is arranged in the sweeping conveying working area. It is configured to move in an attitude inclined to the side opposite to the traveling direction with respect to the endless rotation band [for example, JP-A-7-23646].

[0003]

According to the above-mentioned conventional structure, the locking claw is moved in the posture of inclining and conveying with respect to the endless rotation band in the scraping conveyance operation area. Because of the above structure, when the amount of grain culm was small or when the grain culm was near the end of the group, the grain culm easily escaped from the locking claws and spilled out.

An object of the present invention is to ensure a reliable engagement even if the amount of grain culms to be locked by the locking claws of the auxiliary scraping and conveying device is small or the grain culm is near the end of the group. The purpose is to make it possible to stop the culm from spilling.

[0005]

[Means for Solving the Problems]

[Structure] In a characteristic structure of the invention according to claim 1, in the pretreatment unit of the combine described at the beginning, the auxiliary scraping conveying device is constituted by an endless rotation band with a locking claw, and a scraping conveying action is performed. In the region, the locking claw is configured to move in a posture inclined to the traveling direction side with respect to the endless rotation band.

According to a second aspect of the present invention, the locking claw is configured to be movable up and down in the moving direction with respect to the endless rotation band, and the locking claw is moved in the moving direction in the scraping conveyance operation area. The auxiliary scraping / conveying device is configured by providing a posture switching means for tilting or laying down on the lower side in the traveling direction when the setting is maintained in the posture inclined to the upper hand side and enters the non-conveyance conveyance non-operation area. .

[Operation] According to the structure of claim 1, the locking claw is moved in a posture inclined with respect to the endless rotation band in the advancing direction in the advancing operation area of the auxiliary advancing transfer device. With such a configuration, even if the amount of grain culm is small or the grain culm is near the end of the group, the grain culm can be reliably locked without letting it escape.

According to the second aspect of the present invention, the amount of the grain culm is small because in the scraping and conveying action area, the locking claw is set and maintained by the posture switching means in the posture inclined to the upper side in the traveling direction. Even if the grain culm is near the rear end of the group, the grain culm can be securely locked without being released, as in the above case.

Then, when entering the non-conveyance non-operating area, the locking claws are inclined or laid down to the lower side in the traveling direction by the posture switching means, so that the interlocked non-operating area of the locked grain culm is moved. You can eliminate carry-on. [Effect] Therefore, according to the configuration of claim 1, even if the amount of grain culms to be locked by the locking claws of the auxiliary scraping and conveying device is small or the grain culm is near the tail end. , It was possible to securely lock and prevent the culm from spilling.

According to the structure of claim 2, in addition to the same effect as that of the structure of claim 1, it is possible to prevent the locked grain stems from being brought into the scraping conveyance non-operation area. As a result, the grain culm can be made more difficult to spill.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. The combine is shown in FIG.
This combine is equipped with a threshing device 3, a control section 4 and the like mounted on a machine body frame 2 supported by a pair of left and right crawler traveling devices 1, and at the front end of the machine body frame 2 is swingable up and down around a horizontal axis. The cutting pretreatment unit 6 is mounted and configured.

As shown in FIGS. 1 and 3, the mowing pretreatment unit 6 includes four fixed weeding tools 7a, 7b, 7c and 7d and three first, second and third grain culms. Raising devices 8A, 8B, 8C
And the reaping device 5 and a pair of left and right gear-shaped scraping rotary members 9
A, 9B and a pair of left and right auxiliary scraping and conveying devices 12A, 1
2B and the vertical conveyance device 10 are supported by the reaping frame 11.

The vertical transfer device 10 is composed of a tip-end locking transfer mechanism 10A and a stock pinching transfer mechanism 10B, and is configured to be swingable around a left and right fulcrum X at the rear portion so that the handling depth can be adjusted. There is.

The three first, second and third grain culm raising devices 8A, 8B and 8C are arranged side by side, and a pair of grain culm introduction paths Ra and Rb are opposed to each other in order from the left. The first and second raising devices 8A and 8B arranged in a state, and the third
The raising device 8C is arranged.

The pair of scraping rotors 9A and 9B are provided with a first raising device 8A and a second raising device, respectively, above the cutting device.
It is arranged in a state of being located behind the raising device 8B, and the left and right sides thereof are interlocked to drive them to scrape the stock side of the harvested culm backward, and the vertical transfer device 10
It is configured to be fed to the beginning of the.

The pair of auxiliary scraping and conveying devices 12A, 1
2B is a cutting device 5 in which a chain 14 (an example of an endless rotation band) in which a large number of resin locking claws 13 are provided at a constant pitch is directed obliquely forward from above the scraping rotors 9A and 9B.
Of the scraping rotary members 9A, 9
B and its drive rotation shaft are shared.

The locking claw 13 has its base end pivotally connected to a chain 14 so that it can be raised and lowered in the traveling direction. Further, there is provided a posture switching means 15 for setting and maintaining the locking claw 13 in a posture inclined to the upper side in the advancing direction in the swept-conveying action area, and laying it down to the lower side in the advancing-direction in the swept-conveying non-acting area. There is. This attitude switching means 1
5, a cam surface 17 is formed on the base end portion of the locking claw 13, and a guide rail 18 that comes into contact with the cam surface 17 is provided along the chain 14.

The guide rod 16 is supported by the raising case of the second raising device 8B in a cantilevered rearward direction, and the guide rod 16 is almost connected to the line connecting the tips of the engaging claws 13 of the right auxiliary scraping and conveying device 12B. Along this, the guide rod 16 is attached to the chain 14
The auxiliary scraping and conveying device 12B is elastically biased to the side.
The guide rod 16 and the guide rod 16 allow the grain culms to be sandwiched and conveyed.

With the above structure, the grain culms that are caused and cut are joined to the front side of both the scraping rotary members 9A and 9B, and the stock holding operation is carried out by the scraping action of both the scraping rotary members 9A and 9B. It is fed to the starting end of the mechanism 10B. According to this configuration, the locking claws 13 are configured to move in a posture inclined with respect to the chain 14 in the advancing direction in the advancing transfer device 12 with respect to the chain 14, and thus the grain culm Even if the amount of culm is small or the culm is near the end of the group, the culm can be reliably locked without letting it escape. Then, when the locking claw 13 enters the scraping conveyance non-operating area, the posture switching means 15 causes the posture switching means 15 to lay down on the lower side in the traveling direction, so that the locked grain stems are not brought into the scraping conveyance non-operating area. You can

As shown in FIGS. 2 and 3, the first, second and third grain culm raising devices 8A, 8B and 8C are provided with a bevel gear mechanism 20 by a transmission shaft 19 rising from the tip side of the cutting frame 11. Driven through. A gear case 21 of the bevel gear mechanism 20 is of a half-split type that is divided into left and right, and a lower end portion of the gear case 21 and an upper end portion of a pipe-shaped shaft case 22 that covers the transmission shaft 19 are divided into respective divided case 21.
Projections 2 formed on the inner circumferences of the end portions a and 21b along the circumferential direction
3 is engaged with and connected to an annular groove 24 formed in the shaft case 22. The divided flanges 21a and 21b are bolted to each other at the first flanges 25 having bolt insertion holes at both ends thereof. In addition to the first flange 25, a second flange 26 with a bolt insertion hole is formed at the upper ends of the divided cases 21a, 21b so as to face the case axis direction, and the grain stem raising devices 8A, 8B are formed. , 8C case 27 is fixed with bolts.

According to this configuration, for example, the shaft case 22
Each divided case 21 is attached to the flange welded to the upper end of the
Compared with the structure in which a and 21b are connected by bolts, a flange welding process is unnecessary, and each of the split cases 21a and 21b
The shaft case 22 and the shaft case 22 can be easily assembled.

[Other Embodiments] As shown in FIG. 4, five fixed weeding tools 7a, 7b, 7c, 7 are provided in the pre-mowing processing section 6.
d, 7e and four grain culm raising devices 8A, 8B, 8
Even when C and 8D are provided, the pair of left and right gear-shaped scraping rotary members 9A and 9B and the pair of left and right auxiliary scraping conveying devices 12A and 12B are used to cut at the starting end of the vertical conveying device 10. It can be configured to scrape and transport the grain culms.

As shown in FIG. 5, the endless rotary body 14 is replaced with a chain and formed of a belt, and the locking claws 13 are integrally formed on the belt in a posture inclined with respect to the chain 14 toward the traveling direction. Good. In this case, the scraping rotary members 9A, 9
If the rotating shafts of B and the endless rotary body 14 are provided separately, and the rotation speed of the scraping rotary bodies 9A and 9B is configured to be higher than the rotation speed of the endless rotary body 14, the locked rice bran It is possible to eliminate the carry-in to the non-conveyance non-operation area.

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

[Brief description of drawings]

FIG. 1 is a plan view showing an auxiliary scraping conveyance device and the like.

FIG. 2 is a partially cutaway vertical side view showing a connection structure between a grain culm raising device and a transmission shaft thereof.

FIG. 3 is a side view of the front part of the combine.

FIG. 4 is a plan view of another embodiment.

FIG. 5 is a plan view of another embodiment.

[Explanation of symbols]

 5 Mowing device 9A, 9B Scraping rotator 10 Vertical transport device 12A, 12B Transport device 13 Locking claw 14 Endless rotating body 15 Posture switching means

Claims (2)

[Claims] 1. A scraping rotator (9A), (9B) for scraping back the root side of a culm that has been cut and raised and sent to the starting end of a vertical conveying device (10), and a scraping device (5). Is installed above the rotary body (9A) and (9A).
In the pre-treatment section of the combine extending from the upper part of (B) to the front of the reaping device (5), the auxiliary scraping conveying devices (12A) and (12B) are directed obliquely forward. 12A) and (12B) are constituted by endless rotation bands (14) with locking claws (13), and the locking claws (13) are moved in the endless rotation band (14) in the scraping conveyance action area. A combiner pre-processing unit configured to move in a posture inclined with respect to the traveling direction. 2. The locking claw (13) is configured to be movable up and down with respect to the endless rotation band (14) in the moving direction, and the locking claw (13) is moved in the moving direction in the scraping conveyance action area. The auxiliary scraping / conveying device (12A), (12A), ( 12B), the combine pretreatment unit according to claim 1.