JP3044152B2 - Combine threshing 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 grain culm which is provided on a side of a handling room and conveys a threshing grain culm handled and processed in the handling room toward a rear side of the handling room in a holding state. Conveying means, a release state for releasing the cereal stalk holding force of the cereal culm conveying means, a holding force release means that can be switched between a non-released state and a released state, and The present invention relates to a combine threshing grain stalk transport device provided with a driving means that can be switched between a state and a state.

[0002]

2. Description of the Related Art Conventionally, in a combine threshing grain culm conveying apparatus, as shown in, for example, Japanese Utility Model Application Laid-Open No. 2-123837 or Japanese Utility Model Application Laid-Open No. 4-124035, a culm conveying means is used for engaging a threshing cereal culm. It is composed of a grain stalk locking and conveying action part (feed chain etc.) for stopping and conveying, and a rail part etc. elastically biased toward the grain stalk locking and conveying action part in a state facing the grain stalk locking and conveying action part. The pinching state of the cereal culm at the beginning or end of the cereal culm transport path is released by retracting the cereal culm engaging and transporting action portion or the rail portion, and all culms of threshing cereal culm are put into the handling room. I was

[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, for example, for detecting the presence or absence of the cut grain culm Among the pair of upper and lower sensors provided in the above, since the cereal culm is not detected by the sensor located on the side of the stock, the cereal culm holding is released based on the information of non-detection of the cereal culm and the whole culm input operation is activated. By avoiding that it is not possible to perform sufficient threshing with just a slight contact of the tip side with the handling cylinder in the handling room, all culms are thrown into the handling room and threshing is performed to reduce unhandled residue. It was made.

[0004] However, in the above prior art, since the whole culm is introduced at the beginning or end of the threshing cereal culm transport path, a large amount of cereal culm is concentrated and introduced into a part of the handling room. Will be. As a result, the threshing load in the handling room becomes uneven, and there is a possibility that the grain culm introduced into all the culms may not be sufficiently handled and processed. There was a disadvantage that it sometimes increased too much.

The present invention has been made in view of the above-mentioned circumstances, and has as its object to solve the above-mentioned disadvantages of the prior art by introducing all culms into a state in which cereals are dispersed throughout the handling room. It is in.

[0006]

According to a first feature of the present invention, the holding force releasing means extends from the front side to the rear side of the handling chamber in the released state. The present invention is characterized in that the cereal stalk retaining force is released in a state and in a state where the rear side of the handling room becomes weaker.

A second characteristic configuration is that the cereal culm conveying means includes a cereal culm locking and conveying action portion, a rail portion facing the cereal culm locking and conveying action portion, and the rail portion being connected to the cereal culm. And a pressing portion that presses against the locking conveyance action portion side, wherein the holding force releasing means, in the released state, presses the pressing portion against the rail portion from the front side to the rear side of the handling chamber. In this case, it is configured to be weaker in a state of extending over the rear side of the handling room.

[0008]

According to the first characteristic configuration of the present invention, when the holding force release means is switched to the non-release state, the grain-throwing grain culm is transported in the retained state by the grain culm transport means, and the handling of the tip portion is performed. Is performed in the handling room. Then, when the holding force releasing means is switched to the released state by the switching operation of the driving means, the grain for the threshing grain culm conveyed from the front side to the rear side of the handling room while being held by the cereal culm conveying means. The grain culm holding force of the culm conveying means is released in a state where the culm holding force extends from the front side to the rear side of the handling room and becomes weaker toward the rear side of the handling room.

Further, according to the second characteristic configuration, in the released state, the rail portion facing the grain stalk locking and transporting action portion for locking and transporting the threshed grain stalks is pressed toward the grain stalk locking and transporting action side. The pressing force of the pressing portion is weaker toward the rear side of the handling room in a state extending from the front side to the rear side of the handling room, and the threshing grain culm held between the grain culm engaging and conveying action portion and the rail portion. The holding power of
The state is released from the front side to the rear side of the handling room and the state becomes weaker toward the rear side of the handling room.

[0010]

Therefore, according to the first characteristic configuration of the present invention, when the harvested culm has a proper culm length, the holding force releasing means is switched to the non-releasing state, and the grain culm transport is performed. While the threshing grain culm is transported in the holding state by the means and the handling process of the tip portion is properly performed, for example, when an extremely short cut grain culm is transported, the holding force release means is released. By switching to the state, all the culms can be thrown into the handling room to avoid problems such as unhandled cereals. Moreover, at this time, for example, as shown in FIG. 5, the holding power of the threshing cereal culm is not so much released on the front side of the handling room, and most of the threshing cereal culm is not put into the handling room and all the culms are held in the holding state. On the other hand, as the threshing culm is transported to the rear side of the handling room, the holding power of the threshing cereal weakens, and all the threshing culms that have been pinched and transported are thrown into the handling room. It is possible to suppress an increase in the power required for the handling process while avoiding the occurrence of problems such as unhandled grain culms by throwing all the grain culms in a state of being dispersed throughout the room.

Further, according to the second characteristic configuration, suitable means for realizing the effects 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 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 caused, and collecting and transporting the harvested grain culm backward. The auxiliary transport device 7 includes a vertical transport device 9 and the like that transfers the harvested culm to the feed chain 8a of the threshing device 2 while gradually laying down the harvested culm, and is configured to swing up and down by driving a lifting 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, and is provided so as to be swing-adjustable by an electric motor M1 with a gear-type reduction mechanism (hereinafter referred to as a handling depth motor). The receiving and holding 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 stalk presence / absence sensors S1 and S2 for detecting the culm length are provided in the conveying path of the harvested culm for detecting the culm length.
The grain culm tip is located between the two sensors S1 and S2, that is, the grain culm presence / absence sensor S1 (hereinafter referred to as a long culm sensor) located on the tip side is off, and The control device 12 described below is set so that the grain stalk presence / absence sensor S2 (hereinafter referred to as a short stalk sensor) is turned on.
By automatically controlling the handling depth motor M1, the handling depth is always set to an appropriate state regardless of the culm length of the planted grain culm. At the swinging fulcrum of the vertical transfer device 9, a potentiometer type supply position sensor 1 for detecting which position the current handling depth adjustment position of the vertical transfer device 9 is located at.
3 is provided. Further, a stock sensor 14 for detecting whether or not the culm is being conveyed is provided at the start end of the vertical conveyance device 9, and a drive shaft portion of the vertical conveyance device 9 is provided with a stock conveyance sensor 9 a. A transport rotation sensor 19 for detecting the state of transporting the grain culm is provided.

The threshing device 2 is provided with a handling room A for handling and processing the harvested grain culm received from the vertical transport device 9 as a threshing grain culm, and is provided beside the handling room A to remove the threshing grain culm. A cereal stalk conveying means H that conveys in a holding state toward the rear side of the handling room A is provided. As shown in FIG. 2, the cereal culm conveying means H includes a feed chain 8 a as a cereal stalk locking and conveying action section for locking and conveying threshing cereals, and a feed chain 8.
and a plurality of compressed coil springs 18 as pressing portions for pressing the holding rail 8b toward the feed chain 8a. That is, the holding rail 8b is configured by pivotally connecting a plurality of divided bodies by pivot pins 23, and vertically slides a rod 24 connected to each pivot pin 23 to an elongated frame body 25. Freely supported, and
Each pivot pin 23 is pressed and urged toward the feed chain 8a by the coil spring 18 externally 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.

As shown in FIG. 4, the frame 25
A telescopic arm 30 is provided above and a telescopic arm 30 that operates to extend and contract in the front-rear direction by being gear-linked to an electric motor M2 (hereinafter referred to as a release motor), and the distal end of the telescopic arm 30 is pivotally supported by the frame body 25. It is pivotally connected to the upper end of one arm 31. On the other hand, one end of a U-shaped second arm 33 pivotally supported by the frame body 25 is attached to a washer 18a attached to the upper end of each of the second to fifth coil springs 18 from the front of the plurality of coil springs 18. Connected, its second
The arm length t from the pivot point of the arm 33 to the connection point of the washer 18a is configured to be longer toward the rear side. The other end of the second arm 33 is connected to a link 32 extending in the front-rear direction, and the lower end of the first arm 31 is connected to the link 32. The first arm 3
The washer 18 a of the coil spring 18 located on the right side of the first arm 31 is connected to an arm portion 31 a provided on the first arm 31. The upper end of the coil spring 18 that is not connected to the second arm 33 is received by the frame body 25.

In the above configuration, when the release motor M2 as a driving means is contracted, as shown in FIG. 3, each of the second arms 33 through the telescopic arm 30, the first arm 31, and the link 32, as shown in FIG. Are pivoted rearward in conjunction with each other, and each coil spring 18 is pulled down in a state where the base end side thereof is located higher toward the rear side. For this reason, in a state extending from the front side to the rear side of the handling room A and in a state where the rear side of the handling room A becomes weaker, the urging force of each coil spring 18 toward the lower side is reduced, and the pressing force against the holding rail 8 b is reduced. And the holding power of the grain stalk held between the feed chain 8a and the sandwiching rail 8b is weakened. Therefore, by the switching operation of the release motor M2 as the driving means, the state is switched between the release state in which the cereal stalk holding force of the cereal stalk transporting means H with respect to the threshing cereals is released, and the non-release state in which the cereal stalk holding force is not released. Flexible holding force releasing means K is provided with the telescopic arm 3.
0, the first arm 31, the link 32, and each second arm 33, etc., and the holding force releasing means K applies the grain stalk holding force from the front side to the rear side of the handling room A. The holding rail 8 of the coil spring 18 is released in such a state that it becomes weaker toward the rear side of the handling room A.
It is configured such that the pressing force against b becomes weaker toward the rear side of the handling chamber A.

The combine is configured to automatically carry out the cutting operation at the ridge, and to prevent the extremely short culm harvested culm generated by the cutting operation from being left untreated. That is, when the instruction switch 15 for starting the mowing work provided on the control unit 3 is operated, the control device 12 described later
The mowing 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 holding force releasing means K is switched to the holding force releasing state, and all the culms of the harvested grain culms are put into the handling room A.

Next, the control configuration will be described.
As shown in FIG. 1, a control device 12 using a microcomputer is provided, and the control device 12 includes the grain stalk presence / absence sensors S1 and S2, the supply position sensor 13, and the stock sensor 1
4. Each detection information of the conveyance rotation sensor 19 and the instruction switch 15 is input. On the other hand, from the control device 12, the handling depth motor M1, the lifting cylinder 10, and
Each drive signal for the release motor M2 is output.

From the detected value of the conveying rotation sensor 19, the cereal culm conveying speed by the stock feeder 9a is detected, and from this information, the conveying start end of the feed chain 8a from the location where the cereal stalk presence / absence sensors S1, S2 are disposed. It is determined whether or not the cereal stem has been transported for a certain distance to
a is a predetermined constant speed, the transfer time from the transfer start end of the feed chain 8a to the start end position of the holding force releasing means K (the position of the second coil spring 18 from the front) is also constant. It can be obtained as time. Therefore, the control device 12 controls the handling depth motor M1.
When both the long culm sensor S1 and the short culm sensor S2 detect the absence of grain culm in a state where the culm is adjusted to the deepest handling side, the conveyance start end of the feed chain 8a from the location where the sensors S1 and S2 are disposed. The mowing grain culm is conveyed to the portion, and after a certain time required to convey from the conveyance start end of the feed chain 8a to the start end position of the holding force release means K, the release motor M2 is contracted to operate. The holding force releasing means K is configured to switch from the holding force non-release state to the holding force releasing state.

The control procedure of the control device 12 will be described below. As shown in FIG. 7, it is detected that the stock sensor 14 is turned on and the grain stalk is being conveyed, and when the instruction switch 15 is operated, the operation of the automatic cutting stop mechanism is suppressed to control the cutting unit. 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, the conveyance state is detected from the detection information of the conveyance rotation sensor 19, and the detection information of the supply position sensor 13 confirms that the vertical conveyance device 9 is at the supply position on the deepest handling side. When it is detected that the very short culm has been conveyed while the short culm sensor S2 and each of the short culm sensors S2 are in the off state, the grain culm is moved from the position where the sensors S1 and S2 are provided to the feed chain 8a from the detection information of the conveyance rotation sensor 19. When it is determined that the feed has been conveyed to the start end by a certain distance, and after a certain period of time required for the conveyance from the start end of the feed chain 8a to the holding force release means K has elapsed from that point, the release motor M2 is operated to activate the grain culm. The holding power is released and the state is switched to the state in which all culms are put in (steps 7 to 12).

Then, during the whole culm loading operation, the conveyance of the grain culm of the very short culm is finished, and the long culm sensor S1 or the short culm sensor S2
When any one of the sensors is turned on, it is conveyed from the location where each of the sensors S1 and S2 is provided to the start end of the feed chain 8a, and after a lapse of time required for conveyance in the feed chain 8a, the release motor M2 is turned off. The operation is stopped to return to the normal holding and conveying state (steps 13 to 16).

[Another Embodiment] The grain stalk engaging and transporting portion 8a constituting the grain stalk transporting means H may be constituted by a transport belt with projections or the like other than the feed chain of the embodiment. The portion 8b is not limited to the split rail of the embodiment pivotally connected. Further, the pressing portion 18 may be formed of a spring body (a plate spring or the like) other than the coil spring of the embodiment, an elastic material such as rubber, or the like. Instead of the connection point at the time of pivotal connection, for example, it may be the center position of the split rail.

The cereal culm conveying means H is held between the rail portion 8b which does not move in the cereal culm conveying direction and the cereal culm engaging and conveying portion 8a which moves in the cereal culm conveying direction as in the above embodiment. Rather than holding, for example, a configuration in which a pair of upper and lower pinching and conveying devices that pinch the cereal stem from both sides move in the culm conveying direction to convey the cereal stem, and the like, The specific configuration can be variously changed.

As in the embodiment, the holding force canceling means K also transmits the operating force of the electric motor M2 as the driving means via the arm and the link mechanism to bias the plurality of coil blades 18 constituting the pressing portion. May be implemented in various forms, for example, by transmitting the operating force of the electric motor M2 via a wire or the like, without weakening. Further, the specific configuration can be changed in various ways, such as a configuration in which a hydraulic cylinder or an electromagnetic solenoid is used instead of the electric motor as the driving means.

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 showing a grain culm conveying means and a holding force releasing means.

FIG. 3 is a side view showing an operation state of a holding force release unit.

FIG. 4 is a front sectional view of a holding force releasing unit.

FIG. 5 is a side view showing a state in which all hulls of threshing cereals are charged.

FIG. 6 is a block diagram of a control configuration.

FIG. 7 is a flowchart of a control operation.

[Explanation of symbols]

 A Handling room H Grain culm conveying means K Holding force releasing means M2 Driving means 8a Grain culm locking conveying action section 8b Rail section 18 Pressing section

──────────────────────────────────────────────────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 Ishizu-Kitacho, Sakai City, Osaka Prefecture Inside Kubota Sakai Works, Inc. (72) Inventor Shigeki Hayashi 64, Ishizu-Kitamachi, Sakai City, Osaka Prefecture Inside Kubota Sakai Works, Ltd. (56) References Japanese Utility Model Showa 52-168860 (JP, U) Japanese Utility Model Showa 52-168859 (JP, U) Japanese Utility Model Showa 2-13837 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A01F 12/10

Claims (2)

(57) [Claims] 1. A threshing grain culm which is provided on a side of a handling room (A) and is handled and processed in the handling room (A).
Cereal conveying means (H) for conveying in a holding state toward the rear side of the stalk, a release state for releasing the cereal stalk holding force of the cereal culm conveying means (H), and a non-release state for not releasing.
Existing holding force releasing means (K) and said holding force releasing means
(K) is switched between the release state and the non-release state.
A combine threshing grain stalk transport device provided with operable drive means (M2) , wherein the holding force release means (K) is in the release state,
In a state extending from the front side to the rear side of the handling room (A), and
First , a combine threshing cereal culm conveying device configured to release the cereal culm holding force in a state in which the culm retaining force is released in a state where the rear side of the handling room (A) becomes weaker. 2. The grain stalk transporting means (H) includes a grain stalk locking and transporting action section (8a) and the grain stalk locking and transporting action section (8a).
A rail part (8b) facing the rail, and the rail part (8b)
And a pressing portion (18) for pressing the holding force release means (8a) toward the grain culm locking / transporting action portion (8a) .
A state in which the pressing force of the pressing portion (18) against the rail portion (8b) extends from the front side to the rear side of the handling chamber (A).
In and combine threshing culms conveying apparatus according to claim 1, wherein is configured to weaker rear side of the threshing chamber (A).