JPH0775436A - Threshed stems conveyer in combine harvester - Google Patents

Abstract

PURPOSE:To make the threshing load in the chamber uniform by feeding short- cut neck stems uniformly into the whole chamber to thresh the stems completely without stems remaining not threshed, when the all bodies of short-cut stems are fed into the threshing chamber. CONSTITUTION:The cereal stem conveyer H, which conveys the stems to be threshed backward to the threshing chamber A, as it holes them, is composed of the rail 8b which is arranged opposing to the conveyer 8a and energized with a plurality of elastomers 18 arranged in the conveying direction toward the conveyer 8a, while the holding-force releaser K for releasing the holding force of the conveyer H allows the supporter 25 for the elastomers 18 to rotate around a fulcrum on the front end side so as to make the energizing force of the elastomers to the rail 8b weaker as it goes backward from the chamber A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grain culvert which is provided on the side of a handling room and conveys threshed grain culms to be processed in the handling room in a sandwiched state toward the rear side of the handling room. Conveying means, facing the grain stalk locking and transporting action part, the rail part urged to the grain stalk locking and transporting action part side by a plurality of elastic bodies juxtaposed in the grain stalk transporting direction is arranged. The present invention relates to a combined grain threshing grain culm conveying device provided with a clamping force releasing means for releasing the grain culm clamping force of the grain culm conveying means.

[0002]

2. Description of the Related Art In the above-mentioned combine threshing culm conveying device, conventionally, as shown in, for example, Japanese Utility Model Laid-Open No. 2-123837 and No. 4-124035, a grain culm conveying means handles the threshing culms. The grain culm locking and transporting action part (feed chain, etc.) for stopping and transporting, and a plurality of elastic bodies (springs, etc.) arranged facing the grain culm locking and transporting action part and juxtaposed in the grain culm transporting direction. It is composed of a rail portion or the like biased toward the grain culm locking and transporting action part side, and the state of sandwiching the grain culm at the starting end or the end part of the grain culm transporting route is changed to the grain cullet locking and transporting action part or rail part. Was evacuated and released, and all the culms of threshed culms were put into the handling room.

[0003]

SUMMARY OF THE INVENTION In the above-mentioned prior art, in order to prevent the pre-cutting processing unit from colliding with the ridges, for example, when approaching a ridge while performing a cutting operation, a pre-cutting processing unit is provided. When the cutting work is performed while raising the cutting height, the cutting height for the planted grain culm becomes extremely high. However, when such an extremely short harvested grain culm is conveyed, for example, for detecting the presence or absence of the harvested grain culm. Since the grain culm is not detected by the sensor located on the stocker side among the pair of upper and lower sensors provided in the above, the grain culm holding is released based on this grain culm non-detection information, and the whole culm feeding operation is activated. By doing so, it is possible to avoid the problem that sufficient threshing can not be performed by only a slight contact of the tip side with the handling barrel in the handling room, and put all the culm into the handling room to perform threshing processing and reduce the residual residue. It is the one.

However, in the above-mentioned prior art, since all the grain culms are thrown in at the starting end or the end of the threshing grain culm transporting route, a large amount of grain culms are intensively put in a part of the handling room. Will be. As a result, the threshing load in the handling room becomes uneven, and there is a risk that the grain culms that have been thrown in all the culms may not be treated sufficiently, and the power required for handling treatment, such as for rotating the barrel, is input to all the culms. Sometimes it had the drawback of growing too much.

The present invention has been made in view of the above circumstances, and an object thereof is to put all the culms into a state in which they are distributed over the whole of the handling room with a simple structure and the above-mentioned conventional technique is used. To solve the problem of.

[0006]

According to a first characteristic configuration of a threshing culm-carrying device for a combine of the present invention, the clamping force releasing means applies a biasing force to the rail portion of the plurality of elastic bodies to the handling chamber. It is configured such that the support body that supports the plurality of elastic bodies is moved such that the support body becomes weaker toward the rear side.

According to a second characteristic construction, the support body is configured to be rotatable about its front end side as a fulcrum, and the clamping force releasing means rotates the support body around the front end side fulcrum. It is configured so that the biasing force of the plurality of elastic bodies with respect to the rail portion is weakened toward the rear side of the handling chamber by moving the elastic bodies.

[0008]

According to the first characteristic construction of the present invention, the support for supporting the plurality of elastic bodies for urging the rail portion arranged to face the grain stalk locking and transporting action portion toward the grain stalk locking and transporting action portion side. The body is moved such that the urging force of the plurality of elastic bodies with respect to the rail portion becomes weaker toward the rear side of the handling chamber, and the gripping force of the grain culvert that is sandwiched and transported by the grain stalk locking transport action portion and the rail portion. But,
It is released when it becomes weaker toward the rear of the handling room.

Further, according to the second characteristic construction, the supporting member is rotated around the fulcrum on the front end side thereof, and the biasing force of the plurality of elastic members with respect to the rail portion becomes weaker toward the rear side of the handling chamber. Therefore, the gripping force of the grain culm sandwiched and conveyed by the grain culm locking / conveying action portion and the rail portion is released in a state in which it becomes weaker toward the rear side of the handling chamber.

[0010]

According to the first characteristic configuration of the present invention, therefore, the threshing culm clamping force is not released so much at the front side of the slaughterhouse, and most of the threshing culms are all thrown into the stalk. While the threshing culms are handled in a sandwiched state, the threshing culms become weaker as the threshed culms are transported to the rear side of the handling room. Since all culms are thrown in, all the culms are thrown in a state of being dispersed over the whole of the handling room to avoid the occurrence of problems such as unhandled input of grain culms and increase the power required for handling processing. Can be suppressed. Moreover, since the support is moved to achieve the desired purpose, the structure can be simplified as compared with the structure in which the biasing force of each elastic body is adjusted separately.

Further, according to the second characteristic constitution, the threshing is performed by a simple means of rotating the support body supporting the plurality of elastic bodies juxtaposed in the grain culm conveying direction around the fulcrum on the front end side thereof. The grain culm clamping force of the grain culm can be released in a state in which the grain culm clamping force becomes weaker toward the rear side of the handling room, and thus a suitable means for achieving the effect of the first characteristic configuration can be obtained.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the combine has a cutting unit 4 connected to a front portion of a machine body including a pair of left and right crawler traveling devices 1, a threshing device 2, a control unit 3 and the like so as to be vertically movable around a horizontal axis P. Configured.

The reaping section 4 raises the planted grain culverts 5, the cutting blade 6 for cutting the roots of the planted grain culms that have been raised, and collects the harvested grain culms and conveys them backward. The auxiliary transporting device 7, the vertical transporting device 9 and the like for handing over the harvested culm to the feed chain 8a of the threshing device 2 while gradually laying it down sideways are configured to swing up and down by the drive of the lifting cylinder 10. In normal mowing work, the mowing unit 4 is controlled to move up and down so as to maintain the set height with respect to the ground, but it can also be lifted and lowered by manually operating the lifting lever 11 provided on the control unit 3. When the reaping unit 4 is raised more than a set height, a mechanical linkage mechanism is provided to automatically cut off the power to the reaping unit 4 to stop the driving of the reaping unit 4 and a reaping automatic stop mechanism is provided. .

The vertical transfer device 9 comprises a stock transfer device 9a for sandwiching and transferring the stock side of the grain culm, a tip transfer device 9b for locking and transporting the tip side of the culm, and a tip guide plate 9c. No. 4, which is swingably supported about the same axis as the swing axis P, and which is swingably adjustable by an electric motor M1 with a gear type reduction mechanism [hereinafter referred to as a handling depth motor]. The receiving and pinching portion from the transport device 7 is changed in the culm length direction, and the handling depth in the threshing device 2 can be changed and adjusted.

A pair of grain culm presence / absence sensors S1 and S2 for detecting culm length are provided in the conveyance route of the harvested grain culm, which is of a switch type and is oscillated to be turned on when the grain culm contacts.
Then, so that the tip of the grain culm is located between these two sensors S1 and S2, that is, the grain culm presence sensor S1 [hereinafter referred to as a long culm sensor] located on the tip side is in the off state, and The control device 12 to be described later so that the grain culm presence sensor S2 (hereinafter referred to as a short culm sensor) located in the ON state is turned on.
Is configured to automatically control the handling depth motor M1 so that the handling depth is always appropriate regardless of the culm length of the planted grain culm. At the swinging fulcrum portion of the vertical transfer device 9, a potentiometer-type supply position sensor 1 for detecting the current position of the vertical transfer device 9 for adjusting the handling depth.
3 is provided. In addition, the starting end of the vertical transport device 9 is provided with a stock sensor 14 for detecting whether or not the grain culm is being transported, and the drive shaft portion of the vertical transport device 9 includes the stock transport device 9a. A transport rotation sensor 19 for detecting the grain culm transport state is provided.

As shown in FIG. 2, the threshing device 2 is provided on the side of the handling room A for handling the harvested culm received from the vertical conveying device 9 as a threshing culm. And a grain culm transporting means H for transporting the threshed grain culm toward the rear side of the handling room A in a sandwiched state. The grain culm transporting means H is configured by arranging a sandwiching rail 8b as a rail portion facing the feed chain 8a as a grain stalk locking and transporting action portion. Are urged toward the feed chain 8a by the coil springs 18 in a compressed state as a plurality of elastic bodies juxtaposed with each other, and the base end portions of the coil springs 18 are supported by a long frame body 25 as a support body. It has been taken. That is, the holding rail 8b is configured by pivotally connecting a plurality of divided bodies by the pivot pin 23, and the coil spring 18
Urges each pivot pin 23 toward the feed chain 8a. However, the front and rear coil springs 18
The base end portion of is received and supported by the machine body. Thus, the tip side of the grain culm is handled in the handling room A while being transported while being locked at the root side of the culm. Further, the frame body 25 is configured to be vertically rotatable around the front end side as a fulcrum, and the pin 25a provided on the rear end side is moved vertically along the elongated hole-like guide hole 26. Is being guided by.

An extendable arm 30 is provided above the frame body 25 so as to extend and retract in the front-rear direction in conjunction with an electric motor M2 (hereinafter referred to as a release motor), and the tip end of the extendable arm 30 rotates to the body. While being pivotally connected to the upper end of the pivoted dogleg-shaped first arm 31, the lower end of the first arm 31 is connected to the frame body 2 via a link 32.
It is pivotally connected to 5.

In the above, when the releasing motor M2 is contracted, the frame body 25 pivots upward around the fulcrum on the front end side through the telescopic arm 30, the first arm 31, and the link 32, and The base end side of the coil spring 18 is pulled upward toward the rear side. Therefore, the coil spring 18 on the rear side is released from the compressed state, and the holding rail 8b is released.
The urging force against (actually each pivot pin 23) becomes weaker,
The gripping force of the grain culms clamped between the feed chain 8a and the clamping rail 8b becomes weaker toward the rear side. Therefore, the holding force releasing means K for releasing the holding force of the grain culm to the threshing grain culm of the grain culm conveying means H is constituted by the releasing motor M2 and the arms 30 to 32.
However, the frame body 25 is moved so that the biasing force of the plurality of coil springs 18 with respect to the holding rail 8b becomes weaker toward the rear side of the handling chamber A. Specifically, as described above, the frame body 25 is rotated around the fulcrum on the front end side.

The combine is constructed so that the cutting work at the edge of the ridge is automatically performed and the cut grain culm of the extremely short culm produced by the cutting work is not left unhandled. That is, when the instruction switch 15 for starting the cutting operation provided on the control unit 3 is operated, the control device 12 described later
The reaping unit 4 is automatically raised and the handling depth motor M
1 is operated to the deepest handling side, and further, as described later, the clamping force releasing means K is switched to the clamping force releasing state, and all the culms of the harvested grain culms are thrown into the handling room A.

Next, the control configuration will be described with reference to FIG.
As shown in FIG. 1, a control device 12 using a microcomputer is provided, and the control device 12 includes the grain culm presence / absence sensors S1 and S2, the supply position sensor 13, and the stock origin sensor 1.
4, detection information of the conveyance rotation sensor 19 and the instruction switch 15 are input. On the other hand, the control device 12 outputs drive signals for the handling depth motor M1, the lifting cylinder 10, and the releasing motor M2.

The transport speed of the grain culm by the stock carrier transporting device 9a is detected from the value detected by the transport rotation sensor 19, and from this information, the transport start end of the feed chain 8a is determined from the location of the grain stalk presence / absence sensors S1 and S2. It is determined whether or not the cereal culms have been transported to the feed chain 8
Since the moving speed of "a" is a predetermined constant speed, the carrying time from the carrying start end of the feed chain 8a to the starting end position of the clamping force releasing means K (the position of the second coil spring 18 from the front) is also constant. Can be sought as time. Therefore, the control device 12 controls the handling depth motor M1.
When the long culm sensor S1 and the short culm sensor S2 both detect the absence of grain culm in a state in which the sensor is adjusted to the deepest handling side, the feed start end of the feed chain 8a from the location where the sensors S1 and S2 are arranged. After the cut grain culm has been conveyed to the section, and the fixed time required to convey from the conveyance start end of the feed chain 8a to the start end position of the clamping force releasing means K has elapsed, the releasing motor M2 is caused to contract. The holding force releasing means K is configured to switch from the holding force non-released state to the holding force released state.

The control procedure of the controller 12 will be described below. As shown in FIG. 4, when the stock origin sensor 14 is in the ON state and it is detected that the grain culm is in the transporting state, and the instruction switch 15 is operated, the operation of the automatic reaping stop mechanism is restrained to suppress the reaper. 4 is raised, and the handling depth motor M1 is operated to the deepest handling side to maintain that state [steps 1 to 5]. When the instruction switch 15 is not operated, normal handling depth control is executed [step 6].

Then, the conveyance state is detected from the detection information of the conveyance rotation sensor 19, and it is confirmed from the detection information of the supply position sensor 13 that the vertical conveyance device 9 is at the deepest handling side supply position, and the long culm sensor S1. When it is detected that the short culm is conveyed while the short culm sensor S2 is off, the grain culm is detected from the conveyance rotation sensor 19 from the location where the sensors S1 and S2 are installed to the feed chain 8a. When it is determined that the fixed distance to the starting end portion has been conveyed, and further, from that time point, a fixed time required for conveyance from the starting end portion of the feed chain 8a to the gripping force releasing means K has elapsed, the releasing motor M2 is operated to operate the grain kernel. The gripping force is released and the state is switched to the all culm insertion state [steps 7 to 12].

Then, the transportation of the extremely short culm culms is completed during the whole culm feeding operation, and the long culm sensor S1 or the short culm sensor S2
When any one of the sensors is turned on, the sensor is conveyed from the position where the sensors S1 and S2 are arranged to the starting end of the feed chain 8a, and after the conveyance required time in the feed chain 8a elapses, the release motor M2 is driven. The operation is stopped to return to the normal holding and conveying state [steps 13 to 16].

[Other Embodiments] The grain culm locking / conveying action portion 8a constituting the grain culm conveying means H may be constituted of a conveyor belt with a protrusion or the like in addition to the feed chain of the embodiment, or a rail. The portion 8b is not limited to the split rail of the embodiment pivotally connected. The elastic body 18 is also the coil spring 1 of the embodiment.
Other than 8, for example, other springs such as a leaf spring and rubber material may be used. Further, in the case of a split rail in which the rail portion 8b is pivotally connected, a biasing portion for the rail portion 8b is provided. Also, instead of the pivot pin 23 for connecting the pivots, for example, the center position of each rail may be used.

Further, as in the above-mentioned embodiment, the grain culm transporting means H is moved in the grain culm transporting direction, and the grain culm locking and transporting action portion 8a.
Instead of arranging the rail portion 8b facing the (feed chain) and not moving in the grain culm conveying direction,
For example, the concrete configuration of the grain culm transporting means H can be variously changed, such that a pair of upper and lower sandwiching and conveying devices that sandwich the grain culm from both sides move in the grain culm conveying direction to sandwich and convey the grain culm.

In order to construct the clamping force releasing means K so that the grain culm clamping force becomes weaker toward the rear side of the handling room A, a support body 25 for receiving a plurality of elastic bodies (coil springs 18) is provided around the fulcrum on the front end side. The configuration for rotating is as in the above embodiment,
The invention is not limited to the configuration in which the distal end portion of the telescopic arm 30 driven by the releasing motor M2 is pivotally connected to the support body 25 via the arm 31 and the link 32. For example, as shown in FIGS. 5 and 6, a pushing body 27 having a U-shaped cross section is brought into contact with a rear side portion of the support body 25 from above in a fitted state, and the pushing body 27 is pressed.
It is also possible to rotate the rotating shaft screwed with the screw provided in the upper part of the above with an electric motor or the like to move the pressing body 27 in the front-back direction. In this case, when the pushing body 27 moves forward and the contact surface with the support body 25 rises upward, the support body 25 receiving the upward biasing force from the elastic body 18 moves around the fulcrum on the front end side. It will rotate to. In addition, in order to return to the original state, the pushing body 27 is moved to the rear side and the supporting body 2
Push down the contact surface with 5.

Further, as means for making the clamping force releasing means K weaken the grain culm clamping force toward the rear side of the handling room A, a support body 25 for receiving a plurality of elastic bodies (coil springs 18) is provided around a fulcrum on the front end side. In addition to the configuration of rotating the support body 25 in this case (the front end side does not move in this case), for example, both the front and rear ends of the support body 25 are moved together, and the amount of upward movement of the rear end side is made larger than that of the front end side. The configuration of is also possible.

Further, the clamping force releasing means K transmits the operating force of the electric motor M2 via the arm or the like to weaken the urging force of the elastic body 18 (specifically, the supporting force), as in the above embodiment. Other than moving the body 25), for example, the operating force of the electric motor M2 is transmitted via a wire or the like, or a hydraulic cylinder or an electromagnetic solenoid is used instead of the electric motor to release the clamping force. The concrete structure of the operating force generating means of the means K and the transmitting mechanism of the operating force can be variously changed.

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

[Brief description of drawings]

FIG. 1 is a front side view of the combine.

FIG. 2 is a side view of a main part of the threshing device.

FIG. 3 is a block diagram of a control configuration.

FIG. 4 is a flowchart of control operation.

FIG. 5 is a side view showing a clamping force releasing means of another embodiment.

FIG. 6 is a front view showing a clamping force releasing means of another embodiment.

[Explanation of symbols]

 A handling room H grain culm transporting means K clamping force releasing means 8a grain culm locking transporting action part 8b rail part 18 elastic body 25 support

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tokunune Ozaki 64 Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Factory Co., Ltd. (72) Tokatsu Otani 64, Ishizukita-machi, Sakai City, Osaka Prefecture (72) Inventor Seiya Ho 64 Ishizukitacho, Sakai City, Osaka Prefecture Kubota Sakai Factory Co., Ltd. (72) Inventor Shigeki Hayashi 64, Ishizukitacho, Sakai City, Osaka Prefecture (72) Inventor Akira Miyake 64, Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Factory

Claims (2)

[Claims] 1. A thresher culm provided on a side of the handling room (A) and treated by the handling room (A), the handling room (A).
A plurality of elastic bodies (18) arranged side by side in the grain culm conveying direction, facing the rear side of the And a rail portion (8b) urged to the grain culm locking and transporting action portion (8a) side is arranged to release the clamping force for releasing the grain culm clamping force of the grain culm transporting means (H). A threshing grain culm conveying device of a combine provided with means (K), wherein the clamping force releasing means (K) is provided with the plurality of elastic bodies (1).
The support (25) for supporting the plurality of elastic bodies (18) is moved so that the biasing force of the rail portion (8b) of 8) becomes weaker toward the rear side of the handling chamber (A). Combined threshing culm transporting equipment. 2. The support body (25) is configured to be rotatable around its front end side as a fulcrum, and the clamping force releasing means (K) moves the support body (25) around the front end side fulcrum. The combine harvester according to claim 1, wherein the elastic body (18) is rotated to weaken the biasing force of the plurality of elastic bodies (18) toward the rail portion (8b) toward the rear side of the handling chamber (A). Thresher culm carrier device.