JP3044154B2 - 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. Conveying means, opposed to the grain stalk locking and transporting action portion, disposing a rail portion urged toward the grain stalk locking and transporting action portion side with a plurality of elastic bodies juxtaposed in the grain stalk transport direction. A releasing state in which the cereal stalk gripping force of the cereal stalk transporting means is released, and a releasing force switchable between a non-releasing state in which the releasing is not performed, and the releasing state and the non-releasing state in which the clamping force releasing means is released. The present invention relates to a combine threshing grain stalk transport device provided with a drive means that can be freely switched.

[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 kernel. A cereal stem engaging and transporting portion (feed chain or the like) for stopping and conveying, and a plurality of elastic bodies (springs or the like) arranged opposite to the cereal stem engaging and transporting portion and juxtaposed in the grain limb conveying direction. And a rail section biased to the grain culm transporting operation section side. Was retracted and released, and all hulls of threshing cereals were introduced into the handling room.

[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.

However, in the above-mentioned prior art, since the whole culm is thrown in at the beginning or end of the threshing grain culm transport path, a large amount of grain culm is thrown into a part of the handling room and handled. There is a possibility that the threshing load in the room becomes uneven, so that the grain culms charged in all the culms are not sufficiently handled and processed.

[0005] The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a simple structure in which all culms are introduced as uniformly as possible in the entire handling room.
An object of the present invention is to eliminate the above-mentioned disadvantages of the related art.

[0006]

According to a first feature of the combine threshing grain stalk transport device of the present invention, the clamping force releasing means is configured to attach the plurality of elastic bodies to the rail portion in the released state. In the point that the power is configured to move the support that supports the plurality of elastic bodies so that the power is in a state ranging from the front side to the rear side of the handling room and becomes weaker toward the front side of the handling room. is there.

[0007] A second characteristic configuration is that the support is rotatable about a rear end thereof, and the holding force releasing means moves the support in the released state to the rear end. Is configured to rotate around the fulcrum of the plurality of elastic members so that the urging force of the plurality of elastic bodies against the rail portion is weaker from the front side to the rear side of the handling room and toward the front side of the handling room. In that it is.

[0008]

According to the first feature of the present invention, when the pinching force releasing means is switched to the non-releasing state, the grain culm conveying means conveys the threshed cereal culm in the pinched state and handles the spike portion. 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 urging force of the plurality of elastic bodies against the rail part for urging the rail part toward the grain culm locking and transporting action part is applied to the handling chamber. By moving the support provided to support the plurality of elastic bodies so as to be weaker toward the front side of the handling room from the front side to the rear side of the stalk, the grain stalk locking and conveying action is performed. The grain squeezing force when nipping and transporting by the section side and the rail portion is released from the front side to the rear side of the handling room and in a state where the force becomes weaker toward the front side of the handling room.

Further, according to the second characteristic configuration, in the release state, the support body is rotated around the fulcrum on the rear end side, so that the urging force of the plurality of elastic bodies against the rail portion is handled. In the state extending from the front side to the rear side of the room and becoming weaker toward the front side of the handling room, the grain stalk pinching force when the grain stalk is transported by the above-mentioned grain stalk locking / transporting action side and the rail portion is set in front of the handling room. The state is released from the side to the rear side and the state becomes weaker toward the front side of the handling room.

[0010]

Therefore, according to the first characteristic configuration of the present invention, when the harvested grain culm is in the harvesting work state having an appropriate culm length, the pinching force releasing means is switched to the non-releasing state to transport the grain culm. While the threshing grain culm is transported in a sandwiched state by the means to properly handle the tip portion, for example, when an extremely short cut grain culm is transported,
By switching the pinching force release means to the release state, it is possible to avoid the occurrence of problems such as leaving all the culms in the handling room and leaving the cereal culms unhandled. In the release state, the pinching force of the threshing cereal culm conveyed in the pinching state is released from the front side of the handling room to the rear side, and is released in a state in which it becomes weaker toward the front side of the handling room. As the culm is transported from the front to the rear of the handling room and the culm is uniformly introduced into the handling room in small quantities, the threshing load becomes uniform,
The handling process is sufficiently performed on each input grain culm, and problems such as unhandled portions are eliminated. In addition, since the desired purpose is achieved by moving the support, the structure can be simplified as compared with a structure in which each elastic body is individually adjusted.

[0011] According to the second characteristic configuration, threshing is performed by a simple means simply rotating a support for supporting a plurality of elastic bodies juxtaposed in the grain stalk transport direction around a fulcrum on the rear end side. It is possible to release the cereal stalk clamping force of the cereal stalk in a state in which the force is weaker toward the front side of the handling room, and thus 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 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.

As shown in FIG. 2, the threshing device 2 is provided on a side of the handling room A for handling and processing the harvested grain culm received from the vertical transport device 9 as threshing grain culm. And a grain stalk transport means H for transporting the threshed grain stalks in a sandwiched state toward the rear side of the handling room A. The grain culm transporting means H is configured by arranging a clamping rail 8b as a rail portion opposite to a feed chain 8a as a grain culm locking / transporting portion. Are urged toward the feed chain 8a by a plurality of compressed coil springs 18 as elastic bodies, and the base end of each coil spring 18 is supported by a long frame 25 as a support. It is received. That is, the holding rail 8b is formed by pivotally connecting the plurality of divided bodies by the pivot pins 23, and the coil spring 18
Pushes each pivot pin 23 toward the feed chain 8a. However, each of the coil springs 18 on the front end side and the rear end side
Is received and supported by the fuselage. Thus, the spike side is handled and handled in the handling room A while the stem side of the grain stem is locked and transported. Further, the frame body 25 is configured to be rotatable in the vertical direction with the rear end side as a fulcrum, and so that the pin 25a provided on the front end side moves in the vertical direction along the elongated hole-shaped guide hole 26. Guided.

Above the frame body 25, a telescopic arm 30 is provided which is operated to extend and contract in the front-rear direction by gearing with an electric motor M2 (hereinafter referred to as a "release motor"). The lower arm of the first arm 31 is connected via a link 32 to the frame body 2 while being pivotally connected to the upper end of a first arm 31 that is pivotally supported.
5 is pivotally connected.

In the above, when the release motor M2 as the driving means is contracted, the frame body 2 is moved via the telescopic arm 30, the first arm 31, and the link 32.
5 rotates upward around the fulcrum on the rear end side, and each coil spring 1
The base end side of 8 is raised upward as it approaches the front side. For this reason, the handling room A extends from the front side to the rear side of the handling room A.
The compression state of the coil spring 18 is released so that it becomes weaker toward the front side of the
3) the urging force for the feed chain 8a is reduced.
And the holding force of the grain stalk held between the holding rail 8b and the holding rail 8b becomes weaker toward the front side. Therefore, by the switching operation of the release motor M2 as the driving means, the holding force that can be switched between a release state in which the grain stalk transporting means H releases the grain stalk clamping force on the threshing grain stalk and a non-release state in which the release is not released. Release means K
Is constituted by the telescopic arm 30, the first arm 31, and the link 32, and the urging force of the plurality of coil springs 18 against the clamping rail 8b is changed from the front side of the handling chamber A to the rear side. The frame 25
Is configured to be moved. Specifically, as described above, the frame body 25 is rotated around the fulcrum on the rear end side.

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 moved 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 culm are thrown 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, the control device 12 outputs drive signals for the handling depth motor M1, the lifting cylinder 10, and the release motor M2.

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
Since the moving speed of “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 end position of the holding rail 8b) is also determined as the fixed time. be able to. Therefore, when the long culm sensor S1 and the short culm sensor S2 both detect the absence of the grain culm in a state where the handling depth motor M1 is adjusted to the deepest handling side, the control device 12 detects the sensor S1, The feed chain 8 from the location of S2
a from the transport start end of the feed chain 8a, and the clamping force releasing means K
After a lapse of a predetermined time required to convey to the starting end position, the release motor M2 is contracted to switch the holding force release means K from the holding force non-release state to the holding force release state. .

The control procedure of the control device 12 will be described below. As shown in FIG. 4, it is detected that the stock stem sensor 14 is on and the grain culm is in the transporting state, and when the instruction switch 15 is operated, the operation of the automatic harvesting stop mechanism is suppressed and the harvesting unit is stopped. 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. If it is determined that the feed chain 8a has been conveyed to the start end, and if a certain period of time required for conveyance from the start end of the feed chain 8a to the clamping force release means K has elapsed from that point, the release motor M2 is operated to activate the grain culm. The clamping force 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 elastic body 18 is also provided with the coil spring 1 of the embodiment.
8, other springs such as a leaf spring and a rubber material may be used. Further, in the case of a divided rail in which the rail portion 8b is pivotally connected, the urging point for the rail portion 8b Also, instead of the pivot pin 23 for pivot connection, for example, the center position of each rail may be used.

Further, as shown in the above embodiment, the cereal stalk transporting means 8a is moved in the cereal stalk transport direction.
Instead of arranging and configuring the rail portion 8b that does not move in the grain stem transport direction, facing the (feed chain),
For example, the specific configuration of the cereal culm conveying means H can be variously changed, such as a configuration in which a pair of upper and lower nip conveying devices that nip the cereal stem from both sides move in the cereal culm conveying direction to pinch and convey the cereal culm.

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

The holding force releasing means K is a means for weakening the holding force of the grain stalk toward the front side of the handling chamber A. A supporting body 25 for receiving a plurality of elastic bodies (coil springs 18) is supported by a fulcrum on the rear end side. In addition to the configuration in which the support 25 is rotated around (in this case, the rear end does not move), for example, both the front and rear ends of the support 25 are moved together, and the amount of upward movement of the front end is larger than that of the rear end. It is also possible to adopt a configuration such as the above.

The holding force releasing means K transmits the operating force of the electric motor M2 as a driving means via an arm or the like to weaken the urging force of the elastic body 18 as in the above embodiment (specifically). Other than moving the support 5), the present invention may be embodied in various forms such as a configuration in which the operating force of the electric motor M2 is transmitted via a wire or the like. Also, the specific configuration of the driving means may be variously changed, such as a hydraulic cylinder or an electromagnetic solenoid instead of the electric motor.

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 main part of the threshing apparatus.

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

FIG. 4 is a flowchart of a control operation.

FIG. 5 is a side view showing a holding force releasing unit according to another embodiment.

FIG. 6 is a front view showing a holding force releasing unit according to another embodiment.

[Explanation of symbols]

 A Handling room H Grain culm conveying means K Nipping force releasing means M2 Driving means 8a Grain culm locking and conveying action section 8b Rail section 18 Elastic body 25 Support

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tokumune Ozaki 64 Ishizukita-cho, Sakai City, Osaka Prefecture Inside Kubota Sakai Works Co., Ltd. In-house (72) Inventor Tamotsu Seiya 64 Ishizu-Kitamachi, Sakai City, Osaka Prefecture Inside Kubota Sakai Works, Ltd. (72) Inventor Shigeki Hayashi 64, Ishizu-Kitamachi Sakai City, Osaka Prefecture Inside Kubota Sakai Works, Ltd. (56) References 5-2636 (JP, U) 1987-203745 (JP, U) 2-123837 (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).
A plurality of elastic bodies (18) arranged in the grain stalk transport direction, wherein the grain stalk transport means (H) for transporting in a sandwiched state toward the rear side of the grain stalk is opposed to the grain stalk locking and transporting action portion (8a). the grain稈係stop conveying action portion at which by arranging the rail portion which is biased in (8a) side (8b), release form to release the cereal稈挟lifting force of the grain稈搬feeding means (H)
And a holding force releasing means (K) that can be switched between a non-released state and a non-released state.
A drive hand that can be freely operated to switch between the released state and the non-released state.
A threshing grain stalk conveying device for a combine provided with a step (M2) , wherein the pinching force releasing means (K) is in the released state,
The urging force of the plurality of elastic bodies (18) on the rail portion (8b) extends from the front side to the rear side of the handling chamber (A).
So that weaker front side of the state and the threshing chamber (A) that, support for supporting the plurality of elastic bodies (18) (2
5) A combine threshing grain stalk transport device configured to move 5). 2. The support member (25) is configured to be rotatable around a rear end side thereof, and wherein the holding force releasing means (K) is configured to rotate in the released state.
The support (25) is rotated around the fulcrum on the rear end side to rotate the rails (8) of the plurality of elastic bodies (18).
b) from the front side of the handling room (A) to the rear side.
The threshing cereal culm conveying device of a combine according to claim 1, wherein the device is configured to be weaker toward the front side of the handling room (A) in a state extending to one side .