JP3044153B2 - 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 Was retracted and released, and all hulls of threshing cereals were introduced into the handling room.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.

[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.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has as its object to introduce all the culms into a stalk with a simple structure and dispersed throughout the handling room. The problem is to solve the problem.

[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 force is configured to move the support that supports the plurality of elastic bodies so that the force is weaker from the front side to the rear side of the handling room and toward the rear side of the handling room. is there.

A second characteristic configuration is that the support is rotatable around its front end, and the holding force releasing means moves the support to the front end in the release state. By rotating around a fulcrum, the biasing force of the plurality of elastic bodies against the rail portion is configured to be weaker from the front side to the rear side of the handling room and toward the rear side of the handling room. It is in the point.

[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 operation 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 rear side of the handling room in a state extending from the front side to the rear side, the grain culm locking and transporting portion is moved. The cereal stalk clamping force when nipping and transporting by the side and the rail portion is released in a state where it 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 support is rotated around the fulcrum on the front 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 rear side of the handling room, the grain stalk pinching force when the grain stalk is transported by the above-mentioned grain stalk locking and 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 rear 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 the sandwiched state by the means and the handling of the tip portion is properly performed, for example, in the case where an extremely short cut grain culm is transported, the clamping force release means is released. By switching to the above, it is possible to avoid the occurrence of defects such as unhandled grain culms by putting all the grain culms into the handling room. Also, at this time, the pinching force of the threshing grain culm is not released so much on the front side of the handling room, and most of the threshing grain culm is handled without being thrown into the handling room in a pinched state, while the threshing grain culm is processed. As the hulls are transported to the rear of the handling room, the clamping force of the threshing cereals becomes weaker, and all the threshing cereals that have been nipped and transported are thrown into the handling room, so that they are dispersed throughout the handling room. Thus, it is possible to suppress the increase in the power required for the handling process while avoiding the occurrence of troubles such as leaving the handling of the input grain culm by introducing all the grain culms. In addition, since the desired purpose is achieved by moving the support, the structure can be simplified as compared with a structure in which the biasing force of each elastic body is individually adjusted.

Further, 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 front end side. It is possible to release the cereal stalk clamping force of the cereal stalk in a state where it becomes weaker toward the rear 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. The frame body 25 is configured to be rotatable in the vertical direction with its front end side as a fulcrum, and the pins 25a provided on the rear end side are vertically moved along the elongated guide holes 26. Is guided by

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 about the fulcrum on the front end side, and each coil spring 1
8 is pulled upward toward the rear 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 rear side of the holding rail 8b (actually, each of the pivot pins 2).
3) the urging force for the feed chain 8a is reduced.
And the holding force of the grain stalks held between the holding rails 8b becomes weaker toward the rear side. Accordingly, a pinching force releasing unit K for releasing the pinching force of the grain culm transporting unit H on the threshing kernels is constituted by the release motor M2 and the arms 30 to 32. The biasing force of the plurality of coil springs 18 on the holding rail 8b moves from the front side to the rear side of the handling room A, and moves the frame body 25 so as to be weaker toward the rear side of the handling room A. Is done. Specifically, as described above, the frame body 25 is rotated around the fulcrum on the front 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
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 feeding section 8a, and after a certain period of time required to convey from the conveyance start end of the feed chain 8a to the start end position of the clamping 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. 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 such that the holding force of the grain culm becomes weaker toward the rear 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 front end side. The configuration to rotate is, 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 member 27 having a U-shaped cross section is brought into contact with a rear 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, the support 25 receiving the upward urging force from the elastic body 18 moves around the fulcrum on the front end side. Will rotate. 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 designed to reduce the holding force of the grain culm toward the rear side of the handling chamber A. A supporting member 25 for receiving a plurality of elastic bodies (coil springs 18) is provided around a fulcrum on the front end side. (In this case, the front end does not move), for example, the front and rear ends of the support 25 are moved together, and the amount of upward movement of the rear end is made larger than that of the front end. Is also possible.

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 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, Ltd. (72) Inventor Shigeki Hayashi 64, Ishizu-Kitamachi, Sakai City, Osaka Prefecture Inside Kubota Sakai Plant, Inc. (72) Inventor Akira Miyake 64 Ishizukita-cho, Sakai-shi, Osaka Kubota Sakai Works Co., Ltd. (56) References Japanese Utility Model Sho 52-168860 (JP, U) Japanese Utility Model Sho 52-168859 (JP, U) Japanese Utility Model No. Hei 1-213837 (JP, U) (58) Field surveyed (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).
As more rear side becomes weaker in that state and the threshing chamber (A), a support member for supporting the plurality of elastic bodies (18) (2
5) A combine threshing grain stalk transport device configured to move 5). 2. The support body (25) is rotatable about its front end side as a fulcrum .
The support (25) is rotated around the fulcrum on the front end side, and the rails (8) of the plurality of elastic bodies (18) are rotated.
b) from the front side of the handling room (A) to the rear side.
The threshing cereal culm conveying apparatus of a combine according to claim 1, wherein the apparatus is configured so as to be weaker toward the rear side of the handling room (A) in a state extending to one side .