JPH1070937A - Cut cereal stem conveyer for combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To control the threshing depth of the cereal stems in a threshing mechanism by changing the position relaying to the feed chain of the threshing mechanism, as the cereal stems cut by the cutter are conveyed and carry out the movement for controlling the threshing depth in the cereal stem conveyer with a simple mechanical constitution. SOLUTION: The cereal stem conveyer 4 which conveys the cereal stems cut by the cutter and feeds them the feed chain 3 is equipped with a stem foot conveyer 6 which swings the starting side of conveying so as to adjust the threshing depth around the swinging shaft 5 and the ear tip conveyer 8 which swings the end side around the swing shaft 7. The swings of both conveyers 6, 8 are interlocked with a single motor M based on the detection of the threshing sensor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a harvesting grain culm transport device for a combine, and more particularly to a grain harvesting device for a threshing device in which a culm harvested by the harvesting device is carried while the inherited supply position to a feed chain is changed. The purpose of the present invention is to adjust the handling depth of the culm, and to perform the handling depth adjustment movement of the grain culm transport device with a simple configuration.

[0002]

As a configuration for adjusting the threshing handling depth of the combine, the stock transfer device and the tip transfer device for transferring the harvested grain culm are rocked by separate motors, and the rocking of each transfer device is performed. This is a mode in which the moving amount is reduced and the handling depth is quickly adjusted, but the configuration and control are complicated.

[0003]

According to the present invention, a reaper 1 is provided.
The culm conveying device 4 which conveys the culm to be cut and feeds the feed chain 3 of the threshing device 2 to the feed chain 3 so that the starting end side of the cereal swaying shaft 5 swings so as to adjust the threshing handling depth. It comprises a device 6 and a tip conveying device 8 which oscillates with the end side as a oscillating shaft 7. The swing of these two conveying devices 6, 8 is interlocked by a single motor M based on the detection of the depth sensor S 1. Of the harvesting grain culm conveying device of the combine.

[0004]

The cereal stalks harvested by the reaping device 1 are conveyed by the cereal stalk conveying device 4 and supplied to the feed chain 3, and the spikes are sent to the threshing room of the threshing device 2 for threshing.
In this grain culm conveying device 4, the handling depth of the grain stalk to the threshing device 2 is detected by the handling depth sensor S1, and when the handling depth is detected to be too deep, the control drive of the motor M causes The stock carrier 6 is swung around the swinging shaft 5 at the starting end side to the stocking side of the grain and the spike carrier 8 is swung around the swinging shaft 7 at the end side toward the spike. Then, the root portion of the transported cereal stem is moved to the side close to the root of the culm and the feed chain 3 is passed to the feed chain 3 in a state where the holding interval of the cereal stem is extended.

On the other hand, when it is detected that the handling depth is too shallow, on the other hand, the control of the motor M causes the stock transfer device 6 and the tip transfer device 8 to swing in the opposite direction. Then, with the clamping interval between the root portion and the tip portion being narrowed, the root portion of the transported grain culm is moved to the tip side and passed to the feed chain 3.

[0006]

As described above, since the stock transfer device 6 and the head transfer device 8 are linked with the swing of the depth control by the driving of the single motor M, the configuration is simple. The control is also simplified by using the common handling depth sensor S1.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A combine harvester 1 is supported on a chassis 10 having a crawler traveling device 9 by a lift cylinder 11 which is expanded and contracted by hydraulic pressure at a front portion, and a mowing device 1 at a rear portion. A threshing device 2 for threshing grain culms conveyed and supplied by the cereal culm transport device 4 of the device 1 is mounted, and a control table 12 and a cockpit 13 are arranged on the front side and threshing and sorting is performed on the rear side. Glen tank 1 for storing crushed grains
4 and a dumping auger 15 for taking out the grains stored in the Glen tank 14.

In the cutting device 12, a cutting frame 16 is rotatable up and down around an elevating shaft 35 above the chassis 10 in front of the threshing device 2, and the cutting frame 16 is provided with a weeding body 17 and a grain stem raising device. 18, a grain stalk scraping device 19, a cutting blade device 20, and a grain stalk transport device 4 for transporting the harvested grain stalk to an upper rear portion. Also, the threshing device 2
It has a threshing chamber 21 equipped with a handling cylinder that rotates around the handling cylinder axis along the front-rear direction, and a feed chain 3 and a clamping rod 22 are provided at a grain culm transfer port along the outside of the threshing chamber 21 to provide a grain. The spikes are supplied to the threshing room 21 from the supply port 34 and threshed by the rotation of the handling cylinder, while inheriting and transporting the grain culm supplied from the culm transporting device 4 backward. On the lower side of the threshing room 21, a threshing net, an oscillating sorting shelf, and a sorting device 23 made of Karamin are constituted.

The grain culm transport device 4 includes a cutting frame 16.
It is arranged on the upper side, and at the lower part, a root carrier 6 is composed of a chain and a clamping rod, and can clamp and transport the root side of the grain stem. The stock transporting device 6 is configured such that the front end portion is a swing shaft 5 and the rear end portion is vertically swingable and swingable, and the chain is driven from the swing shaft 5 portion. This stock transfer device 6
A spike conveying device 8 is provided in a substantially parallel configuration above the front end so as to be rotatable up and down on the front end side around a swing shaft 7 on the rear end side, and is disposed at appropriate intervals along the chain. The transport of the grain culm from the cutting state to the threshing supply state by changing the posture of the grain culm from the cutting state to the threshing supply state by the two conveying devices 6 and 8 by rotating the lag to guide the conveyance between the engaged culm and the spike side guide rod. Convey and supply.

The swing for adjusting the handling depth of the grain culm conveying device 4 is linked by an electric motor M via a link mechanism and a slide mechanism. Both ends of an arm 25 that rotates integrally with the shaft 24 of the motor M, and a pair of upper and lower swing arms 26 and 27 are connected by links 28 and 29, and the swing arms 26 and 27 are connected.
27 can be turned up and down around the arm shafts 30 and 31. A roller 32 integral with the transfer frame of the tip transfer device 8 is slidably supported above these swing arms 26, and integrated with the transfer frame of the stock transfer device 6 above the swing arm 27. The rollers 33 are slidably supported, and the conveying devices 8, 6 are vertically swung about the central axes 7, 5 by the up and down rotation of the swing arms 26, 27.

The starting end of the feed chain 3 is opposed to the end of the spike transfer device 8 of the stock transfer device 6, and inherits the grain stalks conveyed to the end portions of the grain stalk transfer device 4. Thus, it can be conveyed while being pinched between the pinching rod 22. The configuration of the swing shafts 5 and 7 of the stock transfer device 6 and the tip transfer device 8 is such that a bevel gear 36 interlocked with a cutting power transmission mechanism in the cutting frame 16 is provided at a lateral end of each of the swing shafts 5 and 7. An elbow-shaped boss 37 is provided on the transfer frame of each of the transfer devices 6 and 8, and is rotatably fitted to the swing shafts 5 and 7. One end of the bevel gear 3 meshed with the bevel gear 36
9 and a sprocket 40 for driving the chain, which is each of the transfer devices 6 and 8, at the other end. Each of these transporting devices 6 and 8 is configured to swing around swinging shafts 5 and 7 and to be constantly transmitted from a cutting transmission mechanism in the cutting frame 16.

A depth sensor S1 for performing depth control
Is provided on the supply port 34, which is the entrance of the threshing chamber 21, and is constituted by a contact sensor that is turned by contacting the tip of the spike to turn the switch ON and OFF. This handling depth sensor S1 is composed of left and right sensors SL and SR arranged at a certain interval in the culm direction, and when the right sensor SR on the tip side is turned on, the supply depth of the grain culm is increased. When the left sensor SL is OFF, the supply depth is too shallow, the left sensor SL is ON, and the right sensor SR is OFF.
In the case of F, it is set so that the supply depth is appropriate.

The root sensor S2 is provided as a contact sensor at the start end of the cereal culm conveying device 4 and protrudes from the conveying frame of the ear tip conveying device 8 toward the cereal culm conveying passage, so that the contact sensor for conveying the cereal culm is conveyed. It is turned on and off. Controllers for handling depth control include these stock sensors S
2, and the input of the left sensor SL, the right sensor SR, and the like, the motor M is rotated forward and reverse to swing the cereal culm transport device 4 and control to maintain an appropriate handling depth.

The handling depth of the grain culm K in the threshing room 21, that is, the distance F from the tip to the clamping position by the feed chain 3
Is controlled to be substantially constant regardless of the length of the culm. or,
Distance E from the holding position by the stock feeder 6 to the stock end
Is also substantially constant. Therefore, the motor M
The distance D between the stock transfer device 6 and the spike transfer device 8 is controlled to DA and DB at short culm A and at long culm B, respectively.

When the harvested grain culm K collected from the mowing side has the standard culm length (C), if the distance between the tip conveying device 8 and the root conveying device 6 is D, the short culm feeding (A) is performed. Then, the left sensor SL of the handling depth sensor S1 is turned off, and the pair of upper and lower swing arms 26 and 27 is drawn by the forward rotation of the motor M, so that the leading end of the spike transport device 8 is moved downward. At the same time, the end of the stock transfer device 6 moves upward,
When the distance D between the two conveying devices 8 and 6 becomes narrower and becomes DA, and conversely, when the standard culm length (C) becomes longer culm supply (B), the right sensor S
When R is turned on, the pair of upper and lower swing arms 26 and 27 is pushed open by the reverse rotation drive of the motor M, so that the start end of the tip transfer device 8 moves upward and the stock transfer device 6
Is moved downward, and the distance D between the two transporting devices 8 and 6 becomes wider and DB. In both cases of the short culm A and the long culm B of these handling depth controls, both the upper and lower transporting devices 8, 6 are maintained in a substantially parallel state.

In FIG. 4, the point different from the above example is that, together with the sensors S1, S2, etc., the length of the grain stalk is provided in the guide passage of the scraping device 19 for scraping and collecting the harvested grain stalk of the cutting device 1. When both culm length sensors S3 and S4 detect grain culm and turn on, the motor M moves the grain culm conveying device 4 to the set height (long culm side). When the culm length sensor S4 on the lower side is ON only, it is moved to the set height (standard height). When both culm length sensors S3 and S4 are OFF, there are three stages of the set height (short culm side). Temporary adjustment is performed, and control is performed by giving priority to the handling depth sensor S1.

[0017] This makes it possible to improve the alignment of the seeds of the transported grain culm, widen the range of adaptation to the culm length, and perform high-accuracy depth control. In FIG. 5, the difference from the above example is that when the feed chain 3 is not rotating for some reason, the safety control device prevents the transmission of the reaper 1 even if the reaper clutch 41 is turned on. 4
2 is provided. Reference numeral 43 denotes a cutting clutch lever for operating the cutting clutch 41. A potentiometer S5 comprising a potentiometer is provided on the lever shaft 44 to detect engagement and disengagement of the cutting clutch and input the detected signal to the safety control device 42.

The cutting clutch 41 is in the form of a belt tension clutch, and a transmission pulley 47 bridged between a driving pulley 45 on the engine side and a cutting input pulley 46 on the cutting frame 16 is pressed by a tension pulley 48 by a spring 49. As a result, the reaping clutch 41 is entered,
The mowing clutch 41 can be disengaged by pulling the tension pulley 48 against the spring 49 by the motor M1. R is a relay of the electric circuit of M1;
The output from the safety control device 42 is received.

The rotation of the feed chain 3 is transmitted by a pulse signal while detecting the passage of the chain link roller 50 by the ultrasonic sensor S6.
2, the rotation speed of the feed chain 3 can be detected. When the threshing clutch is engaged, the mowing clutch lever 43 is engaged, and the mowing relay R is turned on, the mowing tension pulley 48 is engaged by the motor M1 to the mowing clutch 41, and the mowing device 1 is driven. If the rotation of the feed chain 3 is not detected even when the cutting clutch lever 43 is engaged, an alarm is issued without the cutting clutch 41 being engaged.

[Brief description of the drawings]

FIG. 1 is a side view showing an operation of a grain culm conveying device.

FIG. 2 is an exploded perspective view thereof.

FIG. 3 is a side view of the combine.

FIG. 4 is a side view showing a partly different embodiment.

FIG. 5 is a control block diagram showing a partially different embodiment, and its flowchart.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Harvesting device 2 Threshing device 3 Feed chain 4 Grain culm conveying device 5 Oscillating shaft 6 Stock conveying device 7 Oscillating shaft 8 Head conveying device S1 Handling depth sensor M Motor

Claims (1)

[Claims] 1. A grain stalk transport device 4 for transporting grain stalks cut by a cutting device 1 and supplying it to a feed chain 3 of a threshing device 2.
The starting end of the transfer is adjusted to a pivot shaft 5 so as to adjust the threshing depth.
And the tip end transfer device 8 that swings with the end side as the swing shaft 7. The swing of both transfer devices 6 and 8 is handled based on the detection of the depth sensor S <b> 1. Combine harvesting grain culm conveying device linked by a single motor M.