JP2886051B2 - Combine grain stalk transporter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a culm length detecting means for detecting a culm length of a cut cereal culm in a culm conveying path for conveying a cut cereal culm toward a threshing device, and based on information of the culm length detecting means. A handling depth adjusting means for adjusting the handling depth in the handling room of the threshing device is provided, and holds the harvested grain culm at the side of the handling room and conveys it toward the rear side of the handling room. A holding and conveying state, a cereal culm conveying means capable of freely switching to a state where all culms of the harvested cereal culm are released by releasing the holding of the harvested cereal culm into the handling room, and a cereal culm of the cereal culm conveying means The present invention relates to a combine grain stalk transport device provided with control means for switching and controlling a holding state.

[0002]

2. Description of the Related Art Conventionally, the above-mentioned combine grain conveying apparatus has been disclosed in Japanese Utility Model Laid-Open No. 2-123837 and Japanese Utility Model Laid-Open No. 4-124.
For example, as shown in Japanese Patent No. 035, etc., for example, a cereal stalk conveying means is provided by a feed chain that locks and conveys threshing cereals and a rail portion or the like elastically urged toward the feed chain in a state facing the feed chain. For example, based on short culm detection information and the like of the culm length detecting means provided with a pair of cereal culm presence detection sensors provided for adjusting the handling depth in the threshing device, based on the start end or end of the cereal culm transport means The gripping state of the cereal culm in the section is released, and the cereal culm conveying means is controlled to be switched from the holding and conveying state to the whole culm input state.

[0003]

According to the above prior art, in order to avoid collision of the pre-cutting unit with the ridge, for example, when approaching a ridge while performing a cutting operation, the prior-cutting unit is provided with a pre-cutting unit. When the cutting work is performed while being raised, the cutting height for the planted grain culm becomes extremely high, but when such an extremely short cut grain culm is conveyed, a pair of the above-mentioned handling depth adjustment is adjusted. Among the cereal stalk presence / absence detection sensors, the cereal culm is not detected even by the sensor located on the side of the stock, so that the cereal culm conveying means is operated as the entire culm input state using the information of non-cereal culm detection as short culm detection information. In this way, it is possible to avoid that sufficient threshing cannot be performed when the tip side slightly touches the handling cylinder in the handling room, and all culms are thrown into the handling room to perform threshing and reduce unhandled residue. Things.

However, in the above-mentioned prior art, based on only the short culm detection information of the culm length detecting means, the grain culm holding force is uniformly released from the harvested grain culm under the same conditions, and the culm is operated in a state where all culms are thrown. For this reason, there is a risk that an appropriate total culm input operation may not be performed on a cut cereal culm having a difference in the amount of transported cereal culm even with the same short culm. That is, when the cereal stalk holding force is largely released when the transported cereal stalk amount is large, a large amount of cereal stalks are thrown into the handling room at once, causing an excessive threshing load on the threshing device. If the degree of release of the cereal stalk holding power is small when the transported cereal stalk amount is small, a small amount of cereal stalk is gradually introduced into the handling room and the amount of cereal stalks in the handling room becomes too small. There is a disadvantage in that the handling process becomes insufficient and unhandled portions are generated.

[0005] The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to allow all culms to be introduced in a finely detailed manner in response to a cut cereal culm having a difference in the amount of cereal culm even if it is a short culm. An object of the present invention is to eliminate the disadvantages of the related art.

[0006]

A first characteristic configuration of the combine grain culm conveying device of the present invention is as follows.
In the state in which the harvested grain culm is held and transported by the grain culm transporting means, it is configured to detect that the handling processing in the handling room is too short to be a short culm, and to detect the transport amount of the harvested grain culm. A culm transport amount detecting means is provided, and the control means, based on information of the culm length detecting means and the cereal culm transport amount detecting means, when the cut culm is the short culm, the cereal culm transport amount. The smaller the value is, the lower the culm holding force of the cereal culm conveying means is to be operated in the state where the whole culm is loaded.

A second characteristic configuration is that the grain culm transport amount detecting means is constituted by a culm thickness sensor for detecting the culm thickness of the transported grain culm.

[0008]

According to the first characteristic configuration of the present invention, when the harvested culm has a culm length in which the handling processing in the handling room is not insufficient when the culm culm is held and conveyed by the cereal culm conveying means, the culling depth adjusting means is used. The handling depth adjustment is activated, and the cereal culm conveying means is operated in a holding and conveying state in which the culm conveying means holds the harvested cereal culm at the side of the handling room and conveys it toward the rear side of the handling room. When the culm is a short culm short enough to be insufficiently handled in the handling room in the holding and conveying state by the cereal culm conveying means, when the cereal culm conveyance amount is large, the cereal culm holding power of the cereal culm conveying means is large. When the grain culm carrying amount is small, the grain culm carrying means is operated with the grain culm holding means being weak and the grain culm carrying means is operated with the grain culm carrying state being weak.

Further, according to the second characteristic configuration, the magnitude of the grain culm transport amount is detected as the magnitude of the culm thickness of the transported grain culm. Then, based on the culm length information and the culm thickness information of the transported cereal culm, when the cut culm is the short culm, the cereal culm holding force of the cereal culm conveying means is strong when the culm thickness is large. In the state, the whole culm is put into the whole culm input state. On the other hand, when the cereal culm carrying amount is small, the whole culm is put into operation with the cereal culm conveying means having a weak cereal culm holding force.

[0010]

Therefore, according to the first characteristic configuration of the present invention, when the harvested grain culm is a short culm short enough to be insufficiently handled in the handling room in the holding and transporting state, the transported grain culm amount is reduced. Is large, the degree of release of the cereal stalk holding power is small, so the culms are handled in the holding and transported state and then all culms are thrown into the handling room.As a result, a large amount of cereals are thrown into the handling room at once and threshing It is possible to avoid generating an excessive threshing load on the device,
When the harvested culm is the short culm, when the transported culm amount is small, the cereal culm holding power is largely released, and all the culm is thrown into the handling room at once and the culm in the handling room is thrown at once. It is alleviated that the amount becomes too small, and the shedding action by rubbing the grain stalks in the handling room works to avoid the occurrence of unhandled, and thus,
All culms can be put into operation in an appropriate state in response to the amount of grain transported for short culms.

Further, according to the second characteristic configuration, the grain culm transport amount of the short culm is detected by the culm thickness sensor having a simple configuration,
Suitable means for realizing the effect of the first characteristic configuration is obtained.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the combine is configured by connecting a reaping unit 4 to a front portion of a body including a pair of right and left crawler traveling devices 1, a threshing device 2, a control unit 3, and the like so as to be able to move up and down around a horizontal axis P. It is composed.

The cutting unit 4 includes a raising device 5 for raising the planted grain culm, a cutting blade 6 for cutting the root of the planted grain culm, and an auxiliary transport for collecting the harvested grain culm and transporting the harvested culm backward. The apparatus 7 includes a vertical conveying device 9 and the like that transfers the harvested culm to the feed chain 8a of the threshing device 2 while gradually turning over the harvested grain culm,
It is configured to swing up and down by driving the up and down cylinder 10. In the normal harvesting operation, the mowing unit 4 is controlled to move up and down so as to maintain the set height with respect to the ground. However, the mowing unit 4 can also be moved up and down by manual operation of the elevating lever 11 provided on the control unit 3. When the mowing unit 4 is raised to a set height or more, an automatic cutting mechanism for automatically cutting off the power to the mowing unit 4 by a mechanical linking mechanism and stopping the driving of the mowing unit 4 is provided. .

The vertical conveying device 9 comprises a stock conveying device 9a for nipping and conveying the stem side of the grain culm, a head conveying device 9b for locking and conveying the spike side of the grain culm, and a spike guide plate 9c. 4 is supported so as to be swingable around the same axis as the swing axis P. Then, the rocking position of the grain culm from the auxiliary transport device 7 is changed in the culm length direction by oscillating the electric motor M1 with a gear-type reduction mechanism (hereinafter, referred to as a handling depth motor). The handling depth can be adjusted.

That is, the grain stalk is brought into contact with the grain stalk transport path for transporting the harvested grain stalk toward the threshing device 2 at a position below the grain stalk transport direction with respect to the handling depth adjustment point by the handling depth motor M1. Then, the culm length is configured as a switch type that swings on and operates, and includes a pair of handling depth adjustment sensors S1 and S2 that are juxtaposed at intervals in the culm length direction and detects the culm length of the harvested grain culm. Detecting means S is provided, and based on information from the culm length detecting means S (a pair of handling depth adjusting sensors S1 and S2), a control device 12 described later controls the operation of a handling depth motor M1 so that planting is performed. Regardless of the length of the culm, the handling depth of the threshing apparatus 2 can always be adjusted to an appropriate state. Specifically, the sensor S1 (hereinafter, referred to as a tip sensor) located on the tip side is turned off so that the tip of the harvested grain culm is located between the pair of handling depth adjustment sensors S1 and S2. In this state, the sensor S2 (hereinafter referred to as “stock side sensor”) located on the stock side is adjusted to be turned on. As described above, the handling depth motor M1 constitutes a handling depth adjusting means for adjusting the handling depth of the threshing apparatus 2 in the handling room A. In addition, at the swing fulcrum of the vertical transfer device 9,
A potentiometer-type supply position sensor 13 is provided for detecting which position the current handling depth adjustment position of the vertical transport device 9 is at.

The stock transfer device 9a of the vertical transfer device 9
Although not shown, a feed chain for locking and transporting the harvested grain culm, and a rod body elastically biased by a spring or the like are provided on the feed chain side, and the harvested grain is provided between the feed chain and the rod body. It is designed to be transported while holding the culm. A culm thickness sensor S3 comprising a potentiometer for detecting the amount of movement of the rod in the grain culm holding direction.
And a transport rotation sensor 19 for detecting the transport speed of the feed chain is provided on a drive shaft portion of the feed chain. Here, the feed speed of the feed chain is set to a predetermined speed,
Since the grain culm conveyance amount is detected from the product information of the feed chain conveyance speed information and the culm thickness information of the culm thickness sensor S3, the culm thickness sensor S3 detects the conveyance amount of the harvested grain culm. Conveyance amount detecting means is configured. In addition, a stock sensor 14 for detecting whether or not the grain culm is being conveyed is provided at the start end of the vertical conveying device 9.

The threshing apparatus 2 has a handling room A for handling and processing the harvested grain culms received from the vertical transport device 9, and holds the harvested grain culm at the side of the handling room A and is behind the handling room A. And a operable grain culm conveying means H that can be switched between a holding / conveying state where the culm is conveyed toward the side and an all culm input state where the holding of the harvested grain culm is released and all the culms of the harvested grain culm are introduced into the handling room A. Have. FIG.
As shown in the figure, the grain culm conveying means H includes a feed chain 8a for conveying the harvested grain culm in a locked state, a clamping rail 8b facing the feed chain 8a, and pressing the clamping rail 8b toward the feed chain 8a. And a plurality of coil springs 18 in a compressed state. That is, the holding rail 8b is configured by pivotally connecting the plurality of divided bodies by the pivot pins 23, and the rod 24 connected to each pivot pin 23 is vertically slidable by the elongated frame body 25. , And each of the coil springs 18 presses and biases each of the pivot pins 23 toward the feed chain 8a in a state of being fitted to the rod 24. In this way, the spike side is handled in the handling room A while the grain stem side is pinched and conveyed, and is processed.

The culm length detecting means S is configured to detect that the harvested cereal culm is a short culm that is short enough to be insufficiently handled in the handling room A when the culm conveying means H holds and conveys. Have been. Specifically, in a state where the handling depth motor M1 is adjusted to the deepest handling side, the tip of the harvested grain culm is higher than the stock side sensor S2 of the pair of handling depth adjustment sensors S1 and S2. When located on the stock side, that is,
The short culm state is detected when both the handling depth adjustment sensors S1 and S2 are in the off state.

As shown in FIG. 4, the frame 25
An electric motor M2 (hereinafter, referred to as a release motor) is provided above, and a telescopic arm 30 is provided, which is telescopically operated in the front-rear direction by gearing with the release motor M2,
The upper end side of the first arm 31 pivotally supported by the frame body 25 is pivotally connected to the distal end of the telescopic arm 30. On the other hand, among the plurality of coil springs 18, the washer-shaped second arm 33 pivotally supported by the frame body 25 is attached to the washer 18 a at the upper end of the second to third and fifth coil springs 18 from the front. While one end side is pivotally connected,
The other end of each second arm 33 is connected to the first
The arm 31 is pivotally connected to the lower end. The washer 18a at the upper end of the fourth coil spring 18 from the front has the first
The arm 31a of the arm 31 is pivotally connected.
Note that among the plurality of coil springs 18, the second arm 3
The upper ends of the coil springs 18 that are not connected to the third arm 31 and the arm portion 31 a of the first arm 31 are received by the frame body 25.

When the release motor M2 is contracted, the telescopic arm 30, the first arm 31, the link 32, and the second arm 33 are operated in conjunction with each other, as shown in FIG. 2nd to 5th) The base end side of the coil spring 18 is pulled up. Therefore, the coil spring 18
Is released, the pressing force on the lower holding rail 8b is weakened, the holding force of the grain culm held between the feed chain 8a and the holding rail 8b is weakened, and all culms are loaded from the holding and transporting state. The state will be switched and actuated. When the release motor M2 is extended, the state returns to the holding and conveying state from the state in which all culms are put in.

The combine is configured to automatically carry out the cutting operation at the ridge, and to prevent the remaining culm having a short culm length caused by the cutting operation from being left untreated. That is, when an instruction switch 15 for starting a mowing operation provided on the control unit 3 is operated, a control device 1 described later is operated.
2 automatically raises the mowing unit 4 and operates the handling depth motor M1 to the deepest handling side, and further, as described later,
The culm conveying means H is switched from the cereal culm holding state to the all culm input state, and all the culms of the cut cereal culm are introduced into the handling room A.

Next, the control structure 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 pair of handling depth adjustment sensors S1 and S2, the culm thickness sensor S3, the supply position sensor 13, the stock sensor 14 , Transport rotation sensor 19,
Also, each piece of detection information of the instruction switch 15 is input. On the other hand, from the control device 12, the lifting cylinder 1
0, each drive signal for the handling depth motor M1 and the release motor M2 is output.

A control means 1 for controlling switching of the cereal culm holding state of the cereal culm conveying means H using the control device 12.
The control means 100 is configured to control the culm length detection means S (handling depth adjusting sensors S1 and S2) and the culm thickness sensor S3 based on information from the culm length detection means S when the harvested grain culm is the short culm. Is configured to be operated in the whole culm input state in a state where the cereal culm holding force of the cereal culm conveying means H decreases as the culm conveying amount decreases. Specifically, as the grain culm conveyance amount decreases, the contraction operation amount of the release motor M2 increases, and the pressing force on the holding rail 8b below each coil spring 18 decreases. At this time, the cereal stalk holding power is proportionally (linearly) to the decrease in the amount of cereal stalk transport.
The amount of cereal culm transported, such as weakening or not weakening the cereal culm retention force so much in the range of large to medium cereal culm transport amount, and increasing the degree of weakening the cereal culm retention force in the medium or less range And the relationship between the cereal culm retention power can be set as appropriate.

Based on the information on the conveying speed of the cereal culm from the conveying rotation sensor 19, the cereal culm is conveyed by a certain distance from the installation position of the handling depth adjusting sensors S1 and S2 to the conveying start end of the feed chain 8a of the threshing apparatus 2. Is determined.
In addition, since the moving speed of the feed chain 8a is a predetermined constant speed, the transport time from the transport start end of the feed chain 8a to the entire culm input position of the harvested grain culm (the position of the second coil spring 18 from the front). Can also be determined as a fixed time. Therefore, when the grain culm conveying means H is operated to throw all culms, the control device 12 conveys the harvested grain culm from the installation position of the handling depth adjustment sensors S1 and S2 to the conveying start end of the feed chain 8a. And
After a certain period of time required to carry the feed chain 8a from the carrying start end to the entire culm input position, the release motor M2 is contracted to switch to the all culm input state.

Hereinafter, the control procedure of the control device 12 will be described. As shown in FIG. 6, it is detected that the stock sensor 14 is in the on state and the grain culm is in the transport state, and when the instruction switch 15 is operated, the operation of the automatic cutting stop mechanism is suppressed and the cutting unit is controlled. 4 and raise the handling depth motor M1 to the deepest handling side to maintain that state [steps 1-5]. Incidentally, when the instruction switch 15 is not operated, normal handling depth control is executed [step 6].

Then, in a state where the transport state is detected from the detection information of the transport rotation sensor 19 and the vertical transport device 9 is confirmed to be at the deepest handling side supply position from the detection information of the supply position sensor 13, When both the side sensor S1 and the stock side sensor S2 are off, the transport rotation sensor 19
Based on the detection information, the grain culm is transported for a certain distance from the location of each of the sensors S1 and S2 to the start end of the feed chain 8a, and a certain time required for the transfer from the start end of the feed chain 8a to all culm input positions. After elapse, the release motor M2 is operated to operate the whole culm input state.
Here, all culms are put into operation in a state where the culm holding force is weakened as the culm thickness value obtained by the culm thickness sensor S3 becomes smaller [Step 7].
To 11].

When the feeding of the cereal culm with a short culm is completed during the whole culm loading operation and one of the tip side sensor S1 and the stock side sensor S2 is turned on, each sensor S
When a certain period of time required for the conveyance from the disposition of S1, S2 to the start end of the feed chain 8a and the conveyance from the start end of the feed chain 8a to the entire culm input position has elapsed, the release motor M2 is extended to operate. To return to the normal holding and conveying state (steps 12 to 14).

[Alternative Embodiment] In the above-described embodiment, the culm length detecting means S is provided in the vertical transport device 9 on the lower side of the handling depth adjusting portion M1 of the mowing portion 4 by the handling depth adjusting means M1. However, besides this, it may be provided, for example, at the start end position of the feed chain 8a for receiving the harvested grain culm from the vertical conveying device 9, at the position immediately before the entrance of the handling room A, or at the handling depth adjusting means M1. For example, the grain stalk raising device 5 of the mowing part 4 may be provided not on the lower side but on the better side than the adjustment point.

In the above embodiment, the culm length detecting means S includes a pair of handling depth adjusting sensors S1 and S2.
When both of the sensors S1 and S2 are in the non-detection state of the grain culm, the harvested grain culm is a short culm so short that the handling process in the handling room A becomes insufficient in the holding and transporting state by the grain culm transporting means H. Although the detection is shown, the specific configuration of the culm length detection means S is not limited to this. For example, an extremely short culm detection sensor S3 is arranged at a position closer to the base of the stock than the pair of handling depth adjustment sensors S1 and S2, and when the extremely short culm detection sensor S3 is in a grain culm non-detection state, You may make it detect that it is a short culm. Further, each of the sensors S1,
S2 and S3 also do not swing in contact with the cereal stalk as in the embodiment, but may use a non-contact type sensor such as a photoelectric sensor to detect the presence or absence of the cereal stalk.

In the above embodiment, the handling depth adjusting means M1
Has been described in which the vertical conveying device 9 of the mowing unit 4 is rotated to move the receiving point of the grain culm in the culm length direction. However, the present invention is not limited to this. For example, the grain culm of the threshing device is conveyed in a holding state. The grain culm conveying means H may be moved in the culm length direction.

In the above embodiment, the cereal culm conveying means H is
The feed chain 8a for locking and transporting the culm, the rail portion 8b pivotally connected to the split rail opposed thereto, and the coil spring 18 for pressing the rail portion 8b toward the feed chain 8a are shown. However, the present invention is not limited to this. For example, a feed belt with a projection may be used instead of the feed chain 8a, and the rail portion 8b is not limited to the one in which the divided rails of the embodiment are pivotally connected. It is possible to adopt a structure such as a spring body (a leaf spring or the like) or an elastic material such as rubber. Also, instead of clamping the grain culm between the rail portion 8b that does not move in the grain culm transport direction and the feed chain 8a moving in the grain culm transport direction as in the above embodiment, for example, the grain culm is clamped from both sides. The specific configuration of the cereal culm conveying means H can be variously changed, such as a pair of upper and lower pinching and conveying devices both moving in the cereal culm conveying direction to convey cereal culm.

The specific configuration of the cereal culm conveying means H operable to be switched between the holding and conveying state and the whole culm input state is not limited to the embodiment. For example, each coil spring 1
The support that commonly receives the upper end of 8 may be pulled upward to release the holding of the grain stalk. Further, the power generation means for release may be constituted by a hydraulic cylinder or the like instead of the electric motor M2.

In the above embodiment, the grain culm transport amount detecting means S3 is constituted by a culm thickness sensor for detecting the culm thickness of the conveyed grain culm. At a position near the stock below the sensors S1 and S2 for adjusting
Provide a sensor that makes the detection bar swing back in the transport direction when it comes into contact with the grain culm, and detect the grain culm transport amount by the swing amount of the bar, or the amount of harvested grain culm is proportional to the vehicle speed It is possible to detect the transported amount of grain stem from the information of the vehicle speed sensor. In addition, the grain culm conveyance amount detecting means S3
The installation location of the (culm thickness sensor, etc.) is also the same as the vertical conveyance device 9 of the embodiment.
The feed chain 8a of the threshing device 2 is not limited to this.
In this case, the grain culm conveyance amount may be detected by a potentiometer or the like that detects the amount of upward movement of the clamping rail 8b.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

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

FIG. 2 is a side view of a grain culm conveying means.

FIG. 3 is a side view showing a state in which all culms are put into operation by the cereal culm conveying means.

FIG. 4 is a front sectional view showing an entire culm loading operation mechanism of the grain culm conveying means.

FIG. 5 is a block diagram of a control configuration.

FIG. 6 is a flowchart of a control operation.

[Explanation of symbols]

 2 Threshing device S Cull length detecting means A Handling room M1 Handling depth adjusting means H Grain culm conveying means 100 Control means S3 Grain culm conveying amount detecting means

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Tokumune Ozaki 64 Ishizukita-cho, Sakai City, Osaka Prefecture Inside Kubota Sakai Factory (72) Inventor Toshikatsu Otani 64 Ishizukita-machi Sakai City, Osaka Prefecture Kubota Sakai Manufacturing Co., Ltd. In-house (72) Inventor Tamotsu Seiya 64 Ishizukita-cho, Sakai City, Osaka Prefecture Inside Kubota Sakai Plant Co., Ltd. (72) Inventor Shigeki Hayashi 64-64 Ishizukita-machi Sakai City, Osaka Prefecture Kubota Sakai Plant Co., Ltd. (58) Field (Int.Cl. ⁶ , DB name) A01F 12/10 A01D 61/00 302

Claims (2)

(57) [Claims] 1. A culm length detecting means (S) for detecting a culm length of a cut cereal culm, and information on the culm length detecting means (S) in a culm conveying path for conveying a cut culm to a threshing device (2). And a handling depth adjusting means (M1) for adjusting the handling depth of the threshing device (2) in the handling room (A) based on the crushing grain culm on the side of the handling room (A). Holding and transporting toward the rear side of the handling room (A), and releasing the holding of the harvested grain culm to release all the culms of the harvested grain culm to the handling room (A).
Combine provided with a grain culm conveying means (H) operable to be switched to a state in which all culms are put into the culm, and a control means (100) for switching and controlling the grain culm holding state of the grain culm conveying means (H). Wherein the culm length detecting means (S) is configured such that, when the harvested culm is held and conveyed by the cereal culm conveying means (H), the handling processing in the handling chamber (A) becomes insufficient. A grain culm transport amount detecting means (S) configured to detect a short short culm and to detect a transport amount of a cut cereal culm.
3) is provided, and the control means (100) is based on information of the culm length detecting means (S) and the grain culm transport amount detecting means (S3).
In the case where the harvested culm is the short culm, the whole culm is operated in a state where the cereal culm holding force of the cereal culm conveying means (H) is weakened as the culm conveyance amount decreases. Combined grain culm conveying device. 2. The combine culm conveying device according to claim 1, wherein said cereal culm conveying amount detecting means (S3) comprises a culm thickness sensor for detecting a culm thickness of the conveyed cereal culm.