JP2008161124A - Harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a harvester equipped with a member that, when necessary, holds down waste straws, or the like, after reaping, laid ahead of dividing bodies during the reaping operation of grain culms, and when unnecessary, will not hold down waste straws, or the like. <P>SOLUTION: The harvester has a constitution that a plurality of dividing bodies 10 are disposed in parallel at the front part of a reaping apparatus 6 and a guide body 20 changeable from an action state to be brought into contact with a field surface to a non-action state that will not come into contact with the field surface is arranged ahead of each dividing body 10. Since in the guide body 20, a tip part 20b side having a shape passing from a base part laid at the back side of the dividing body 10 through the long hole 10a of the dividing body 10 and wrapping upward to the surface side is projected and straw wastes, mud, weeds, cut straws, and the like, previously laid on a field surface, before reaping standing grain culms by the reaping apparatus 6 can be compacted or separated right and left, even if they exist, the reaping operation of the standing grain culms is efficiently carried out. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a harvester such as an agricultural combine harvester that performs a grain harvesting operation or the like.

An explanation will be given below using a combine as an example of an agricultural harvester.
When the self-developing combine begins the mowing and threshing operation, the cereal culm in the field is subject to weeding by the weeds at the lower front end of the reaping device, and then the culm is raised by the pulling action of the groin raising device. It is caused from the lying state to the upright state, and when the stock of the culm reaches the cutting blade, it is cut, and the chopped culm is inherited by the feeding and conveying device and sequentially conveyed upward at the rear. The grain depth of the cereals conveyed to the rear part of the feeding and conveying device is adjusted, then supplied from the feed chain of the threshing device, and threshed by the teeth of the barrel that rotates in the threshing device. The processed threshing product is subjected to a sorting process in the sorting room, and the sorted grain is temporarily stored in the Glen tank. When the amount of stored grain increases, the auger carries the grain out of the combine.

In addition, the following patent document 1 discloses a configuration related to a harvesting device for a whole grain straws type combine harvester.
Japanese Patent Publication No.8-17626

  In the above-described conventional self-removing combine, when cutting one step of the field, the waste after threshing is shredded by a waste cutter at the rear of the machine body and released onto the field scene. Then, when the cereal row adjacent to this one step is cut, the weeds accumulated in the field scene are picked up by the weeds, and this swarf is scraped together with the napped cereal and harvested. As a result, there is a drawback that the sawdust is supplied to the threshing device together with the harvested cereal, and the threshing device is overloaded and clogged, or a sorting failure occurs, resulting in a loss of grain harvest.

  The harvesting device described in Patent Document 1 is a combine harvesting device suitable for harvesting buckwheat and soybeans, especially buckwheat. When harvesting buckwheat with the harvesting device, the harvesting device is used from the lower side of the harvesting device. In addition, by providing a segregating guide for stems extending over the upper front, the stems of intertwined napkin cereals are pushed by this guide, and the intertwined stalks of the harvested crops are forcibly lifted up by the weeds and torn off. It can be prevented from being pulled out or pulled out.

  However, the reaping device of Patent Document 1 is provided in a full-pile throwing type combine, and normally sews only the tip side of the cereal by lifting a predetermined amount of the reaping device with respect to the field scene. The push-by guide only pushes the stems apart, and there is no idea to hold down the waste accumulated in the field scene. In addition, when the stem-and-grain push-and-separate guide body is provided in the self-removable combine, the stem-and-pull push-and-separate guide body protrudes forward. The disadvantage of not being able to mow the planted cereals.

  The problem of the present invention is that, if necessary, it is possible to reduce the amount of scooping by the weed body by suppressing the waste accumulated in front of the weed body during the harvesting operation of the cereal, and when it is not necessary, it is possible to eliminate it It is providing the harvesting machine provided with the member which does not hold down.

The above-described problems of the present invention are solved by the following configuration.
According to the first aspect of the present invention, in a harvesting machine provided with a harvesting device (6) for harvesting a planted crop in a farm field in front of the body frame (2), a herbaceous body is provided in front of the harvesting device (6). (10) are arranged in parallel, and in front of each weed body (10), a guide body (20 that can be switched between an action state that contacts or approaches the field scene and a non-action state that is separated from the field scene. ).

  In the invention according to claim 2, the guide body (20) passes through a long hole (10a) provided in the weed body (10) from a base portion disposed on the back surface side of the weed body (10). The harvesting machine according to claim 1, wherein the tip end side protrudes from the surface side of the grass body (10) and the tip end portion (20b) of the guide body (20) is warped forward.

  According to a third aspect of the present invention, the guide body (20) is pivotable in the vertical direction about the pivot shaft (20a), and one end of the guide body (20) is positioned between the operating state and the non-operating state. The harvesting machine according to claim 1, further comprising an operation lever (26) connected to a link mechanism (22-25) that can be switched between the control seat and an operation lever (26) that operates the link mechanism (22-25) in the vicinity of the cockpit (32). is there.

  According to a fourth aspect of the present invention, the guide body (20) is pivotable in the vertical direction about the pivot shaft (20a), and the link mechanism (22-25) is always placed in the operating state. The harvesting machine according to claim 1, wherein the harvesting device is biased by the elastic body (27).

  According to the first aspect of the present invention, even if there is swarf, mud, weeds, chopped rice balls, etc. on the field scene before cutting the planted cereals with the reaping device 6, the guide body 20 in the active state. Therefore, it is less likely that the sawdust 10 is scooped up by the weeding body 10 arranged behind the guide body 20, and this sawdust is threshed together with the harvested cereal rice cake. The problem of causing poor sorting by supplying to the apparatus is reduced, and the harvesting and threshing work of the planted cereal can be efficiently performed. Further, by separating the guide body 20 from the field scene in a non-actuated state, the reaping device 6 can be brought closer to the cocoon, and the planted cereal cocoon can be reaped and the efficiency of the reaping operation can be improved. .

  According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, the tip 20b of the guide body 20 can smoothly suppress or reduce swarf, mud, weeds, cuttings, etc. on the field scene. Therefore, the scooping of these can be prevented, and the mowing and threshing operation can be performed efficiently.

  According to the third aspect of the invention, in addition to the effect of the first aspect of the invention, the operation state of the guide body 20 can be switched remotely from the cockpit 32 because the operation state and non-operation state of the guide body 20 can be switched remotely. It becomes easy and mowing and threshing work can be performed efficiently.

  According to the invention described in claim 4, in addition to the effect of the invention described in claim 1, the tip 27b of the guide body 20 attaches the spring 27 to swarf, mud, weeds, cuttings, etc. on the field scene. It is possible to reduce the scooping of these by the weeding body 10 by pressing with the force, and the guide body 20 resists the urging force of the spring 27 when the guide body 20 is pushed up from the field scene. Therefore, the guide body 20 and its support part can be less damaged.

An embodiment of the present invention will be described below with reference to a drawing, using a combine as an example of a harvester as an example.
FIG. 1 shows a right side view of a combine that performs a grain harvesting operation according to an embodiment of the present invention, and FIG. 2 shows a front view of the combine. FIG. 3 shows an enlarged right side view near the weed body of the combine, and FIG. 4 shows an enlarged front view of the weed body portion of the combine. In this embodiment, the left and right directions are referred to as left and right, respectively, and the front and rear directions are referred to as front and rear, respectively, in the forward direction of the combine.

  The lower part of the fuselage frame 2 of the combine 1 shown in FIG. 1 is configured to be able to run without sinking not only in dry fields but also in wet fields by a crawler 4 molded into an endless belt made of a flexible material such as rubber. A traveling device 3 is provided, a cutting device 6 is mounted on the front portion of the body frame 2, and a threshing device 7 is mounted on the upper portion of the body frame 2.

  After the engine (not shown) is started, when the combine 1 is moved forward by the main transmission lever 8 and the mowing / threshing clutch (not shown) is turned “ON”, the mowing work and the threshing work are started. The grain culm planted in the field is subject to weeding action by a plurality of herbaceous bodies 10 at the lower front end of the reaping device 6, and then raised to an upright state if it is in a lying state by the raising action of the culm pulling device 11. Then, the cedar stock reaches the cutting blade 12 and is cut.

  On the rear side of the reaping device 6 of the present embodiment, a cereal supply and transfer device 13 (FIG. 5) that takes over the harvested cereal to the feed chain 14 is provided. The cereals harvested by the reaping device 6 are conveyed to the threshing device 7 while adjusting the handling depth, and are sandwiched between the feed chain 14 and the scissors 15 on the side of the machine body and handled in the threshing device 7 (not shown). After threshing the cereal with an indoor handling cylinder or the like, the grain selected from the culling or the like is conveyed to the glen tank 16 through the first cereal cylinder (not shown). The grain stored in the Glen tank 16 is conveyed to the outside of the combine 1 via the auger 18.

The combine weed body 10 of this embodiment has the following characteristics.
During the harvesting operation of the planted cereal, the combine moves forward along the field scene by dividing the cereal where the weeding tool has fallen, but the combine 1 of this embodiment has a guide body 20 in front of the weed body 10. Provided. Since the rod 24 that supports the guide body 20 via the link mechanism is provided with a spring 27 that biases the guide body 20 toward the field scene, the guide body 20 is in contact with or close to the field scene. By moving forward, the cutting blade 12 of the reaping device 6 has a function of preliminarily compressing or separating left and right swarf, mud, weeds, cuttings and the like in the field before cutting the planted cereal.

  As shown in FIG. 3, the weeding body 10 is fixed to the tip of the weed ridge 21. As shown in FIG. 4, the guide body 20 provided with its longitudinal direction facing forward and backward and its rotating shaft 20a are combined. 1 is disposed within the width of the weed body 10 in a front view, the rotation shaft 20a is disposed at the base of the back side of the weed body 10 inclined backward, and the guide body 20 is provided on the weed body 10 in the vertical direction. The distal end portion protrudes from the back surface side of the weeding body 10 to the front surface side through the elongated hole 10a (FIG. 4). Therefore, the guide body 20 is configured to be rotatable in the vertical direction about the rotation shaft 20a.

  Further, the front end portion 20b of the guide body 20 on the front side of the rotating shaft 20a has a warped shape, and the front end portion 20c of the guide body 20 on the rear side of the rotating shaft 20a is L-shaped through the link 22. The arm 23 is connected. The L-shaped arm 23 is rotatable about the rotation fulcrum of the projection 21 a attached to the weed ridge 21. One end of the end of the L-shaped arm 23 opposite to the connecting portion with the link 22 is supported by the upper portion of the reaping device 6 and is connected to the tip of the rod 24 provided downward. And the end of the L-shaped arm 23 are always urged downward by a spring 27 attached to the rod 24 side.

  As described above, the guide body 20 is cut into the field scene after the threshed waste has been cut by the cutter, or accumulated to a dropper without being cut by the cutter, and then released into the field scene. There is a function of preventing the scissors 10 from being scooped up by the weeding body 10 by pressing the eaves or the like with the urging force of the spring 27 at the warped shape of the tip 20b. In particular, when a cocoon has fallen to the uncut cocoon (ground) side during the cutting operation of a long cocoon, and the weeding body 10 scoops up the cocoon, it may not be possible to perform continuous chopping work associated with the forward movement of the combine 1. Also, in the wet field work, the crawler 4 that ran during the harvesting of the planted cereals in the previous process of the mowing sunk and raised near the stock of the cereals on the uncut (ground) side. By suppressing the mud with the guide body 20, there is also a function of preventing the raised mud from being scooped up by the weed body 10.

  Furthermore, since the rotating shaft 20a of the guide body 20 is disposed in the main body cover of the weeding body 10 when the combine 1 is viewed from the front, there is no possibility that sawdust is caught on the rotating shaft 20a. Further, since the guide body 20 is disposed within the lateral width of the weed body 10, it is possible to prevent swarf and the like from being entangled with the guide body 20.

  The guide body 20 is rotatable up and down, and the vertical rotation fulcrum 20a of the guide body 20 is a portion that receives a reaction force (F) behind the ground contact surface of the guide body 20 (a tip portion 20b that warps upward). Since the spring 27 is always urged to the farm scene side, the ground contact surface of the guide body 20 can easily follow the unevenness of the farm field. When thrust (F) is applied from the forward direction, a component force (T) acts in a direction to push the guide body 20 toward the grounding side, and the guide body 20 is moved downward with a rotational torque (T) of T = F × L. To prevent the weeds 10 from scooping up the sawdust and the like, and even if the sawdust is clogged between the ground and the guide body 20, the guide body 20 resists the biasing force of the spring 27. By rotating the tip 20b side of the Such as can be removed Warakuzu to ease.

  In addition, as shown in FIG. 3, when the guide body 20 is grounded to the farm scene, the guide body 20 is configured to be grounded at the same height as the ground contact surface of the weed body 10. After weeds, cuttings, etc. are crushed or separated to the left and right, the rear weed culm 21 is also helped by the function that can be crushed continuously or separated to the left and right.

  Further, as shown in FIG. 3, the guide body 20 is provided with an abutting portion 20d that contacts the front surface of the weed body 10 when the guide body 20 is grounded. Since it can be supported, the support is reliable and the strength can be improved.

  The rotating shaft 20a of the guide body 20 is disposed on the weed body 10 so that the guide body 20 and the weed body 10 are integrated, so that the unit can be replaced with the guide body 20 only by replacing the weed body 10. Can be assembled. Further, if necessary, the guide body 20 can be easily removed from the weeding body 10 and changed to a specification in which the guide body 20 is not disposed.

Further, as shown in FIG. 4, even when the weed body 10 is inclined at a predetermined angle in the left-right direction with respect to the vertical direction when viewed from the front, the guide body 20 is rotated along the inclined surface of the weed body 10. Is attached to the weeding body 10 so as to rotate around the fulcrum.
Therefore, the guide body 20 when weeding the planted cereal is also inclined at a predetermined angle in the left-right direction with respect to the vertical plane, compared to a configuration in which the guide body 20 rotates in the vertical direction in front view. Improved herbicidal properties.

Further, as shown in the plan view of the combine 1 in FIG. 5 which is a modification of the combine harvesting device in FIG. 1, the weed ridge 21 supported by the harvesting device 6 is provided with a rotation fulcrum 28a and is rotated in the left-right direction. A movable wire attachment member 28 is provided, a spring 29 is connected to one end of the wire attachment member 28 in the left-right direction, the other end of the spring 29 is connected to the base of the reaping device 6, and the wire attachment member 28. One end of the wire 31 is connected to the other end in the left-right direction, and the other end of the wire 31 can be pushed and pulled at the cockpit 32.
By pushing and pulling the wire 31 at the cockpit 32 in this way, the weeding tool 10 and the guide body 20 in the straight traveling state can be tilted to the right side via the wire attachment member 28 to increase the cutting width of the cereal.

  When the guide body 20 is rotated upward with the rotation shaft 20a as a fulcrum, the guide body 20 is switched from the operating state to the non-operating state. As shown in FIG. 1, the switching to the inactive state is performed by manually operating the arm 25 that rotatably supports the upper end of the rod 24 from the cockpit 32 with the operation lever 26. Thus, without removing the guide body 20, the guide body 20 can be used by switching between the operating state and the non-operating state according to the field conditions. Further, when the guide body 20 is in a non-operating state, if the tip 20b of the guide body 20 is held in contact with the upper front surface of the weed body 10, the guide body 20 causes a failure of the pulling device 11 of the reaping device 6 when the combine 1 is stored. There is no such thing.

  When the guide body 20 is rotated to the non-operating state, the guide body 20 can be held in the non-operating state by fixing the operation position of the operating lever 26 with a lock device provided on the operation lever 26 portion. it can.

  Further, as shown in the enlarged right side view of the weeding tool portion in FIG. 6, the guide body 20 is in an upright posture, and the intermediate state between the action state during pressure reduction such as evacuation and the non-action state when stored in a warehouse or the like. You may employ | adopt the structure which can be hold | maintained at the guide position (standing rice weed guide position) ((i) position of FIG. 6) which weeds while pushing the planted cereal rice cake which is a part.

  As shown in FIG. 7 (a), when cutting the outermost periphery of the field first when cutting the planted cereals in the field, or the middle rate of cutting while moving straight through the group of planted cereals in the field Sometimes, the cutting body 10 can be pushed forward by the guide body 20 at the standing rice weed guide position to ensure visibility of the tip of the weed body 10. If there is no guide body 20 at the standing rice weed guide position, the planted cereal bunches fall on the tip of the weed body 10 as shown in FIG. May not be confirmed visually.

  In order to hold the guide body 20 at the standing rice weed guide position, the operation lever 26 is locked at a predetermined position. That is, as shown in FIG. 8 (FIG. 8 (a) is a side view near the operation lever, and FIG. 8 (b) is a view of the operation guide viewed from the direction of arrow A in FIG. 8 (a)), the cutting device 6 side. Three locking grooves 44a1, 44a2, and 44a3 are formed in the edge portion of the operating guide 44 fixed to each other at predetermined intervals along the rotation direction of the operating lever 26, and each of the locking grooves is operated. By engaging the lever 26, it is configured to be able to be switched and held between an action position (action state), a standing rice weed guide position, and a non-action position (non-action state).

  Further, as shown in FIG. 9A, the guide body 20 is supported in the upper part of the reaping device 6 so as to be stored in a non-operating state when the combine 1 moves backward. 35 may be configured to be driven and controlled by the controller 36 shown in the control block diagram of FIG. In the drive control by the controller 36, for example, when the backward movement detection sensor 38 that detects the wheel rotation direction provided on the crawler 4 detects the backward movement of the machine body, the guide body 20 is raised and rotated to a set height. Done.

  In this way, the vertical distance between the farm scene and the guide body 20 is increased by raising and rotating the guide body 20 when the combine moves backward, and drags the dust and the like sandwiched between the guide body 20 and the farm scene. You can go back without going.

  When the overall height of the cutting device 6 or the height of the machine body is detected by the cutting height sensor 39 composed of an ultrasonic sensor or a potentiometer, and the detection result reaches a predetermined height by the lifting operation of the cutting device 6. Alternatively, the guide body 20 can be raised and rotated to a set height.

  Furthermore, it is set as the structure which accommodates the guide body 20 in a non-operation state at the time of driving | running | working on a road. This is because if the combine 1 is traveling at a predetermined traveling speed or higher based on the detection value of the traveling speed detection sensor 42, it is determined that the combine 1 is traveling on the road and no cutting operation is performed. To shorten the overall length of the aircraft and enable safe driving.

  Similarly, by cutting a cutting clutch (not shown) that cuts power to the cutting device 6, the guide body 20 is automatically stored in a non-operating state, and the overall length of the machine body can be shortened except during cutting operations. it can. The cutting clutch is detected by a cutting clutch detection sensor 41.

  Moreover, the guide body 20 is raised to a set height during turning so as not to drag the sawdust sandwiched between the guide body 20 and the field scene. Further, the guide body 20 is automatically stored in a non-actuated state when it is detected that the turning detection sensor 43 is turning by detecting the difference between the rotation speeds of the left and right wheels or by detecting the left / right tilt angle of the steering lever 40. good. In this way, it is possible to turn without dragging the sawdust and the like sandwiched between the guide body 20 and the farm scene. Also, the overall length of the aircraft can be shortened.

  Since the cutting width of the planted crop can be increased according to the present invention, the cutting work can be easily performed according to the size of the field and the like, and the possibility of use as a combine is high.

It is a right view of the combine which performs the harvesting operation | work of the grain of one Example of this invention. It is a front view of the combine of FIG. FIG. 2 is an enlarged right side view of a weed body portion of the combine of FIG. 1. It is an enlarged front view of the weed body part of the combine of FIG. It is a top view of the modification of the combine of FIG. FIG. 2 is an enlarged right side view of a weed body portion of the combine of FIG. 1. FIG. 7 is a plan view (FIG. 7A) of a weed body portion of the combine of FIG. 1 and a plan view (FIG. 7B) of a conventional weed body portion. FIG. 8A is a right side view of the vicinity of the operation lever, and FIG. 8B is a direction of an arrow A in FIG. 8A. Figure seen from). It is the right view (FIG. 9 (a)) of the combine which performs the harvesting operation | work of the grain of one Example of this invention, and its control block diagram (FIG.9 (b)).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Combine 2 Airframe frame 3 Traveling device 4 Crawler 6 Mowing device 7 Threshing device 8 Main shift lever 10 Divided body 10a Elongation 11 Grain raising device 12 Cutting blade 13 Grain supply / conveying device 14 Feed chain 15 Clamp 16 Glen tank 18 auger 20 guide body 20a rotating shaft 20b tip portion 20c tip portion 20d abutting portion 21 weed ridge 21a projection portion 22 link 23 L-shaped arm 24 rod 25 arm 26 operation lever 27 spring 28 wire attachment member 28a rotation fulcrum 29 Spring 31 Wire 32 Driver's seat 35 Driving motor 36 Controller 38 Reverse detection sensor 39 Cutting height sensor 41 Cutting clutch detection sensor 42 Traveling speed detection sensor 40 Steering lever 43 Turning detection sensor 44 Operation guide 44a Locking groove

Claims (4)

In a harvesting machine in which a harvesting device (6) for harvesting a planted crop in the field is provided in front of the body frame (2),
A plurality of weed bodies (10) are arranged in parallel at the front part of the cutting device (6), and in front of each weed body (10), the state of contact or approach to the farm scene and the non-separated from the farm scene. A harvesting machine provided with a guide body (20) that can be switched to an operating state.   The guide body (20) penetrates a long hole (10a) provided in the weed body (10) from a base portion arranged on the back surface side of the weed body (10) to the surface side of the weed body (10). The harvesting machine according to claim 1, characterized in that the tip end side protrudes and the tip end portion (20b) of the guide body (20) warps forward.   The guide body (20) can be pivoted up and down about a pivot shaft (20a), and a link mechanism (22) in which one end of the guide body (20) can be switched between the operating state and the non-operating state. The harvesting machine according to claim 1, characterized in that an operation lever (26) connected to (25) to operate the link mechanism (22-25) is provided in the vicinity of the cockpit (32).   The guide body (20) can be rotated in the vertical direction about the rotation axis (20a), and is always moved by the elastic body (27) via the link mechanism (22-25) so as to be positioned in the operation state. 2. The harvester according to claim 1, wherein the harvester is biased.

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