JP2009011291A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combine harvester capable of automatically obtaining most suitable holding force according to reaping amount and carrying out threshing operation efficiency. <P>SOLUTION: Reaped grain culms fed from a reaping apparatus 3 installed in front of a machine body is received from the reaping apparatus 3 to a feed chain apparatus 6 and pressed to a feed chain 6a by a feed guide body 41 of a feed guide apparatus 410 and then, passed through a space between the feed chain 6a of the feed chain apparatus 6 and a holding pestle 36 of a holding apparatus 360 and fed to a threshing apparatus 5. Biasing force of a holding spring 58 biasing the feed guide body 41 toward the feed chain 6a is constituted to be changeable by a biasing force-variable mechanism 580 according to a flow rate of reaped grain culms reaped by the reaping apparatus 3 and conveyed to the rear. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention provides a feed chain device that inherits a harvested cereal that is harvested by a reaping device disposed in front of the machine body and conveyed backward, and a chopped cereal that is fed from the reaping device is fed to the feed chain device. The present invention relates to a combine that includes a supply guide device having a supply guide body that presses toward a chain.

  A threshing process for a harvesting device disposed in front of the machine body, a feed chain device that inherits a harvested cereal that is harvested by the harvesting device and conveyed backward, and a cereal that is conveyed backward by the feed chain device A threshing device that performs cutting, a pinching device that has a pinch for pinching a harvested wheat bran between the feed chain in the feed chain device, and a harvester that is sent from the harvesting device in front of the pinch A combine provided with a supply guide device having a supply guide body that presses cereals toward the feed chain is conventionally known (see, for example, Patent Document 1).

Here, in the conventional supply guide apparatus, the force (clamping force) that the supply guide body presses toward the feed chain is substantially constant. However, since the amount of harvested cereal in the reaping device changes, the drag against the supply guide body also changes according to the amount of cereal that is conveyed, and the supply guide body cannot effectively hold down the cereal. May become unstable, and defects such as clogging of cereals may occur.
JP 2007-14287 A

  The present invention has been made in view of the above-described prior art, and can provide a combine that can automatically obtain an optimum pinching force according to the amount of cutting and can improve the threshing efficiency. Objective.

  The combine according to the present invention is a reaping device disposed in front of the fuselage, a feed chain device that inherits the harvested cereal that is reaped by the reaping device and conveyed rearward, and is conveyed rearward by the feed chain device. A threshing device that performs a threshing process on the cereals, a squeezing device that has a squeezing nip between the feed chain in the feed chain device, and the reaping in front of the squeezer And a supply guide device having a supply guide body for pressing the harvested cereals fed from the device toward the feed chain, wherein the supply guide device is a pivot shaft along the body width direction. The supply guide body supported so as to be able to rotate in a direction in which the feed chain rotates toward and away from the feed chain; And Kyo扼 spring for biasing the En, is characterized in that it has a biasing force variable mechanism capable of changing the biasing force of the Kyo扼 spring.

According to the combine of the above configuration, the harvested cereal straw sent from the harvesting device disposed in front of the machine body is inherited from the harvesting device to the feed chain device and is pressed against the feed chain by the supply guide body of the supply guide device. After that, it passes between the feed chain of the feed chain device and the pinch of the pinch device and is sent to the threshing device.
Here, the biasing force of the pinching spring that biases the supply guide body toward the feed chain is changed by the biasing force variable mechanism in accordance with the flow rate of the harvested cereal that is cut by the cutting device and conveyed backward. Can do.

  In this way, since the biasing force of the pinching spring that biases toward the feed chain according to the flow rate of the harvested grain can be changed by the biasing force variable mechanism, the optimum pinching force can be set according to the amount of cutting. It can be set, and the threshing work efficiency can be improved.

  Preferably, the apparatus includes a flow rate detection sensor that detects a flow rate of the harvested cereal that is cut by the reaping device and conveyed backward, and a controller that receives a detection signal from the flow rate detection sensor. The urging force variable mechanism is automatically controlled based on a detection signal from the flow rate detection sensor so that the urging force of the heel spring increases in proportion to the flow rate of the harvested grain culm.

In this case, the flow rate of the harvested cereal that is cut by the cutting device and conveyed backward is detected by the flow rate detection sensor, and the detection signal is input to the controller. And, by the controller, the biasing force of the pinching spring that biases the supply guide body toward the feed chain based on the detection signal detected by the flow rate detection sensor is increased in proportion to the flow rate of the harvested cereal. The urging force variable mechanism that changes the urging force of the pinch spring is automatically controlled.
Therefore, by automatically controlling the urging force of the pinching spring to be urged toward the feed chain in proportion to the flow rate of the harvested cereal grains detected by the flow rate detection sensor, an optimum is obtained according to the amount of reaping. The pinching force can be obtained automatically, and the threshing work efficiency can be improved.

  Preferably, when the controller determines that the flow rate of the harvested cereal is less than or equal to a standard flow rate based on a detection signal from the flow rate detection sensor, the urging force of the pinching spring is minimized. Activates the variable biasing mechanism.

In this case, when the flow rate of the corn flour detected by the flow rate detection sensor becomes equal to or less than the standard flow rate, the biasing force variable mechanism is controlled by the controller, and the biasing force of the pinching spring is minimized.
Therefore, when the supply guide body is configured to be able to switch between the cutting work position and the non-cutting work position, the biasing force of the pinching spring is minimized in the final state of automatic control. Thus, it is possible to reduce the operating force when the supply guide body is moved between the cutting work position and the non-cutting work position.
Further, when the supply guide body is moved from the non-cutting work position to the cutting work position (even when the fulcrum is exceeded), even when the operating force is released, The impact force when the supply guide body abuts on the feed chain can be reduced, and the safety of the operator and the durability of the supply guide body can be improved.

  Preferably, the controller includes an ON / OFF switch for turning on / off automatic control of the biasing force variable mechanism, and a manual switch for manually controlling the biasing force variable mechanism, and when the ON / OFF switch is turned off, the controller The operation control of the biasing force variable mechanism is performed so that the biasing force of the pinching spring becomes a biasing force corresponding to the operation amount of the manual switch.

  Alternatively, when the controller determines that the flow rate of the harvested culm is equal to or less than the standard flow rate based on the detection signal from the flow rate detection sensor, the biasing force is such that the biasing force of the pinching spring is minimized. In the configuration for operating the variable mechanism, preferably, an ON / OFF switch for turning ON / OFF automatic control of the biasing force variable mechanism and a manual switch for manually controlling the biasing force variable mechanism are provided, and the ON / OFF switch In the OFF operation, the controller controls the urging force variable mechanism so that the urging force of the pinching spring becomes an urging force corresponding to the operation amount of the manual switch, and the ON / OFF switch is turned on. When the manual switch is operated during operation, the controller determines that the urging force of the pinching spring when the flow rate of the harvested cereal is less than the standard flow rate is So that the urging force corresponding to the operation amount of the dynamic switch makes an initial setting of the biasing force adjuster mechanism.

In this case, the urging force variable mechanism is automatically controlled by operating the ON / OFF switch, while the urging force is controlled via the controller based on the operation amount by operating the manual switch during the OFF operation. The variable mechanism is activated and the urging force of the pinching spring is manually changed.
In addition, when the controller determines that the flow rate of the harvested cereal meal is equal to or less than the standard flow rate based on the detection signal from the flow rate detection sensor, the attachment force is set so that the biasing force of the pinching spring is minimized. In the configuration for operating the variable force mechanism, if the manual switch is operated when the ON / OFF switch is turned on, the initial setting of the variable force mechanism during automatic control is the initial setting of the pinching spring when the flow rate is below the standard flow rate. The biasing force (minimum biasing force) is manually changed.
Thus, by operating the ON / OFF switch and the manual switch, it is possible to easily switch from automatic control to manual control. Further, when the controller determines that the flow rate of the harvested cereal meal is below the standard flow rate based on the detection signal from the flow rate detection sensor, the biasing force is set so that the biasing force of the pinching spring is minimized. In the configuration in which the variable mechanism is operated, the initial setting in the automatic control can be changed (offset control), and more accurate automatic control can be performed.

  According to the combine according to the present invention, the urging force of the pinching spring that urges toward the feed chain in accordance with the flow rate of the harvested cereal can be changed by the urging force variable mechanism, which is optimal according to the amount of cutting. It is possible to set the pinching force so that the threshing work efficiency can be improved.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
1 and 2 are a left side view and a plan view of a combine according to an embodiment of the present invention. The overall structure of the combine will be described with reference to FIGS. 1 and 2. In the following description, the left side in the traveling direction of the traveling machine body 1 is simply referred to as the left side, and the right side in the traveling direction is also simply referred to as the right side.

  The combine of this embodiment includes a traveling machine body 1 on which a pair of left and right traveling crawlers 2 are supported. At the front of the traveling machine body 1, a harvesting device 3 that takes in while harvesting grains is provided on a cutting frame 21 that is supported on the traveling machine body 1 by a single-acting lifting hydraulic cylinder 4 so as to be adjustable up and down. The traveling machine body 1 stores a feed chain device 6 that conveys cereals harvested by the reaping device 3 backward, a threshing device 5 that threshs the cereals conveyed by the feed chain device 6, and stores grains after threshing. And a grain tank 7 to be used. In the present embodiment, the threshing device 5 is disposed on the left side in the traveling direction of the traveling machine body 1, and the grain tank 7 is disposed on the right side in the traveling direction of the traveling machine body 1. A swivelable discharge auger 8 is provided at the rear of the traveling machine body 1 so that the grains inside the grain tank 7 are discharged from the throat throw 9 of the discharge auger 8 to a truck bed or a container. Has been. An operation unit 10 is provided on the right side of the reaping device 3 and on the front side of the grain tank 7.

  The driver 10 includes a step 11 on which the operator gets on, a round handle type steering handle 13 provided on the handle column 12 on the step 11, a driver seat 14 provided behind the steering handle 13, and a driver seat 14. The lever column 15 is provided with a main transmission lever 16, an auxiliary transmission lever 17, a threshing clutch lever 18, and a harvesting clutch lever 19. An engine 20 as a power source is disposed below the driver's seat 14.

The cutting device 3 is provided with a clipper-type cutting blade device 22 that cuts the stock of uncut cereals in the field below the traveling machine body 1 and the cutting frame 21. Further, in front of the cutting frame 21, a grain culling pulling device 23 that raises an uncut grain culm in the field is arranged. Between the culm pulling device 23 and the front end (feed start end side) of the feed chain device 6, a culm transporting device 24 for transporting the chopped culm harvested by the cutting blade device 22 is arranged. The grain feeder 24 includes a vertical conveyor 24 a that passes the harvested grain that has been cut by the cutting blade device 22 to the feed chain device 6 while gradually lying down. The said vertical conveying apparatus 24a is provided in the downstream (rear) side from the confluence | merging point of the grain straw conveyed from the multiple cutting blade apparatus 22. FIG.
In addition, a weeding body 25 for weeding uncut cereal grains in the field is provided in front of the lower part of the cereal habit raising apparatus 13. Therefore, while driving the traveling crawler 2 by the engine 20 and moving in the field, the reaping device 3 is driven and the uncut cereals in the field are continuously harvested.

  The threshing device 5 includes a handling cylinder 26 for threshing threshing, a rocking sorter 27 and a tang fan 28 for selecting threshing falling below the handling cylinder 26, and a threshing discharge discharged from the rear part of the handling cylinder 26. A processing cylinder 29 for reprocessing an object and a dust exhaust fan 30 for discharging dust at the rear of the swing sorter 27 are provided. In addition, the rotating shaft of the handling cylinder 16 is extended along the conveyance direction (in other words, the advancing direction of the traveling machine body 1) of the grain by the feed chain device 6. The stocker side of the cereals conveyed from the reaping device 3 by the cereal conveying device 24 is inherited by the feed chain device 6 and is nipped and conveyed. Then, the tip side of this cereal is carried into the handling chamber 16 and threshed by the handling cylinder 17.

  Below the rocking sorter 27, a first conveyor 31 for picking up the grain (first thing) sorted by the rocking sorter 27, and a second pick-up such as a grain with branches A number conveyor 32 is provided. Both the conveyors 31 and 32 of this embodiment are laterally arranged on the back upper surface side of the traveling machine body 1 in a side view in order of the first conveyor 31 and the second conveyor 32 from the front side in the traveling direction of the traveling machine body 1.

  The swing sorter 27 is configured such that the cereals that have leaked from the receiving net stretched below the handling cylinder 26 are subjected to peristaltic sorting (specific gravity sorting) by a feed pan and a chaff sheave (not shown). In addition, as for the grain which fell from the grain sieve (illustration omitted) of the rocking | pulverization sorter | selection board 27, the dust in the grain will be removed by the sorting wind from the Kara fan 27, and will fall to the conveyor 31 most.

  A whipping cylinder 33 extending in the vertical direction is connected to a terminal portion of the first conveyor 31 that protrudes outward from one side wall (in the embodiment, the right side wall) of the threshing device 5 on the side of the grain tank 7. . The grain taken out from the first conveyor 31 is carried into the grain tank 7 through the whipped cylinder 33 and collected in the grain tank 7. In addition, the termination | terminus part which protruded outward from the one side wall of the grain tank 7 side in the threshing apparatus 5 among the 2nd conveyors 32 cross | intersects the whipping cylinder 33, and passes through the reduction | restoration cylinder (illustration omitted) extended in the front-back direction. In this way, the upper side of the feed pan of the swing sorter 27 is connected in communication, and the second product is returned to the upper side of the feed pan of the swing sorter 27 and re-sorted.

  On the other hand, a waste chain 34 is arranged on the rear end side (feed end side) of the feed chain device 6. The waste (the grain from which the grain has been shattered) inherited from the rear end side of the feed chain device 6 to the waste chain 34 is discharged to the rear of the traveling machine body 1 in the long state, or the rear of the thresher 5 After being cut to a suitable length by a waste cutter 35 provided on the side, the waste cutter 35 is discharged to the lower rear of the traveling machine body 1.

Next, the culm pinching structure of the feed chain device 6 as an embodiment of the present invention will be described.
3 and 4 are a side view and a front view of the feed chain device of FIG. 5 and 6 are partially enlarged views of FIGS. 4 and 3. FIG.

As shown in FIGS. 3 and 4, the combine according to the present embodiment includes a pinch 36 that holds a harvested corn bran with the feed chain 6 a in the feed chain device 6, and a pinch bracket 38. A chopping frame 39 fixed to one side (left side) of the threshing upper surface cover 37 of the threshing device 5 and a nip 36 are connected to the nip frame 39 so as to be movable up and down, and the nip 36 is fed. A pinching device 360 having a pinching spring 40 biased toward the chain device 6 is provided.
With this configuration, the cereal stock supplied from the reaping device 3 is transported while being sandwiched between the cereal conveyance unit on the upper surface side of the feed chain device 6 and the lower surface side of the nip 36, and the cereal In a state where the tip side of the head enters the handling chamber inside the threshing device 5, the cereal basket is conveyed from the front side to the rear side in the axial direction of the handling cylinder 5.

  On the front end side (feed start end side) of the feed chain device 6, as shown in FIG. 6, the harvested cereal mash fed from the reaping device 3 on the front side of the pinch 36 is fed to the feed chain 6 a. A supply guide device 410 having a supply guide body 41 that presses toward is provided. The supply guide body 41 is formed by bending a steel pipe into a bowl shape. The rear end side of the supply guide body 41 is sandwiched so that the supply guide body 41 can turn around the pivot shaft 42 along the width direction of the machine body in a direction in which the supply guide body 41 contacts and separates from the feed chain 6a. The front end side of 39 is connected and supported. Thereby, the stock side of the harvested cereal rice cake supplied from the reaping device 3 is transported between the front end side of the feed chain device 6 and the supply guide body 41, and the harvested cereal rice cake is transferred to the front end side of the clamping device 360. Is inherited.

  As shown in FIGS. 4 and 5, the pivot shaft 42 is inserted through a receiving cylinder 43 fixed to the pinching frame 39 by welding. The rear end side of the supply guide body 41 is fixed to one end side (outward in the width direction) of the pivot shaft 42 protruding from one end side of the receiving cylinder body 43 by welding.

Further, the supply guide body 41 has a spring seat 67 formed above the straight portion at the center (a portion extending substantially parallel to the extending direction of the feed chain 6a), and a plate-like spring is formed on the spring seat 67. One end of the material 68 is fixed. The other end of the spring material 68 is substantially parallel to the straight portion of the supply guide body 41 and extends in the grain feeding direction of the feed chain 6a. The upper surface of the feed chain 6a can be pressed in the gap.
As a result, the harvested cereals are nipped and conveyed from the supply guide body 41 via the spring material 68 to the culm 36 while being transferred, so that the gap between the rear side of the supply guide body 41 and the front side of the nip 36. Thus, it is possible to effectively prevent the harvested cereals from falling off.

In the present embodiment, the supply guide body 41 is rotatable around the pivot shaft 42 by an artificial operation. More specifically, first, the operation arm 44 is fixed to the other end side (inward in the width direction) of the pivot shaft 42 protruding from the other end side of the receiving cylinder 43 by welding. A handle lever 47 is pivotally supported on the front frame 45 on the front end side of the threshing upper surface cover 37 via a lever support shaft 46 so as to be rotatable in the left-right direction (direction intersecting the traveling direction). A first link 48 is integrally fixed to the handling lever 47, a second link 50 is connected to the first link 48 via a connecting link 49, and a third link 51 is integrated with the second link 50. It is connected to. The second link 50 and the third link 51 are pivotally supported by the front frame 45 via a link shaft 52 so as to be rotatable. An operation arm 44 is connected to the third link 51 via a connecting rod 53.
As a result, the operator of the driver's seat 14 manually rotates the handle lever 47 in the left-right direction with the left hand to rotate the supply guide body 41 around the pivot shaft 42, so that the supply guide body 41 is A cutting operation position (solid line position in FIG. 6) that presses the harvested cereal rice bran so that it can be pinched against the front end side of the feed chain device 6 or a non-cutting cutter held at a position away from the front end side of the feed chain device 6. It is switched to one of the work positions (virtual line positions in FIG. 6).

  Note that both ends of the connecting link 49 are connected to the first link 48 and the second link 50 via shafts 49a and 49b. A connecting rod 53 is connected to the third link 51 via a universal joint 53a, and an operation arm 44 is further connected via a shaft 53b. Thereby, the supply guide body 41 can be rotated around the pivot shaft 42 by an artificial operation of rotating the handle lever 47 about the axis in the front-rear direction (traveling direction).

  As shown in FIGS. 5 and 6, an operating arm 55 is fixed to the lever support shaft 46 of the handling lever 47, while a spring seat arm 54 is fixed to the front frame 45. A pressing spring 56 is connected between the operating arm 55 and the spring seat arm 54.

  The pressing spring 56 acts to exceed the fulcrum for the switching operation of the hand lever 47. That is, the pressing spring 56 is positioned below the lever support shaft 46 when the supply guide body 41 is in the cutting operation position, and the supply guide body 41 is located around the pivot shaft 42 with respect to the feed chain 6a. While the hand lever 47 is biased to the side operated in the approaching direction, when the supply guide body 41 is in the non-cutting working position, the supply guide body 41 is pivoted around the pivot shaft 42 with respect to the feed chain 6a. The handle lever 47 is urged to the side operated in the separating direction. Therefore, if the handling lever 47 is operated to a position beyond the lever support shaft 46, the supply guide body 41 is automatically moved until it is located at the cutting work position or the non-cutting work position. Thereby, it is possible to perform the switching operation to both positions with a lighter operation.

  Here, as shown in FIGS. 5 and 6, the supply guide device 410 according to the present embodiment includes a pinching spring that urges the supply guide 41 toward the feed chain 6 a in addition to the supply guide body 41. 58 and an urging force variable mechanism 580 that can change the urging force of the pinching spring 58.

  When the supply guide body 41 is in the cutting operation position, the urging force of the pinching spring 58 acts as an urging force toward one side around the pivot shaft 42 close to the feed chain 6a. Is in the non-cutting position, the biasing force of the pinching spring 58 acts as a biasing force toward the other side around the pivot shaft 42 that is separated from the feed chain 6a.

Here, the urging force (the urging force of the pinching spring 58 that urges the supply guide body 41 toward the feed chain 6a) corresponds to the flow rate of the harvested cereal that is cut by the reaping device 3 and conveyed backward. The biasing force variable mechanism 580 is changed.
Therefore, the optimum pinching force can be set according to the amount of cutting, and the threshing work efficiency can be improved. Moreover, it can set to the optimal pinching force also according to the wet condition, hardness, etc. of the harvested cereals to be conveyed, and can maintain the flow of cereals well.

This will be described in more detail.
FIG. 7 shows a partially enlarged view in the vicinity of the biasing force variable mechanism of FIG.
In the present embodiment, as shown in FIGS. 6 and 7, a first end 58a on one end side of the pinch spring 58 is connected to a connecting portion 41a of the supply guide body 41, and the biasing force is variable. The mechanism 580 is connected to the second end 58b on the other end side of the pinch spring 58, and the relative position of the second end 58b with respect to the first end 58a (that is, the spring length of the pinch spring 58). ) And a spring length variable member 582 configured to be changeable.

In the present embodiment, the spring length variable member 582 is rotatable about a rotation shaft 581 substantially parallel to the pivot shaft 42, and the spring length variable member 582 rotates about the rotation shaft 581. Thus, the spring length of the pinching spring 58 can be changed.
More specifically, the biasing force variable mechanism 580 includes a motor (electric motor) 583 that is operatively driven to rotate about the rotation shaft 581, and a drive gear 584 that is rotationally driven by the motor 583. The spring length variable member 582 is provided with a driven gear 585 that meshes with the drive gear 584. The second end portion 58 b of the pinching spring 58 is attached at a position eccentric from the rotation shaft of the driven gear 585.

According to the above configuration, when the supply guide body 41 is positioned at the cutting work position, the first end 58a of the pinching spring 58 is connected to the second end 58b of the pinching spring 58 and the pivot. It is located closer to the feed chain 6a than a virtual line B connecting the support shafts 42.
When the supply guide body 41 is rotated from the cutting operation position to the other side around the pivot shaft 42 and positioned at the non-cutting operation position, the first end portion 58a of the pinching spring 58 is in the virtual position. The line B is located on the side away from the feed chain 6a beyond the line B.
That is, when the supply guide body 41 is moved between the cutting work position and the cutting non-working position, the pinching spring 58 passes through the fulcrum defined by the virtual line B.
Therefore, if the supply guide body 41 is moved to a position where the first end portion 58a of the pinching spring 58 exceeds the virtual line B (the pivot shaft 42), the supply guide body 41 is in the cutting operation position or the cutting non-operation position. It is automatically moved until it is located at. Thereby, the supply guide body 41 can be reliably moved at either of the positions and can be held more reliably at the position.

In the present embodiment, a handling cover 61 is pivotally supported on the cover support shaft 60 on the front end side of the feed chain device 6 so as to be rotatable around the cover support shaft 60.
In conjunction with the movement of the supply guide body 41, the handling cover 61 is positioned at the retracted position and the handling work position.

More specifically, as shown in FIGS. 3, 4, and 6, the supply guide body 41 and the handle cover 61 are connected by a cover operation wire 62. When the supply guide body 41 is at the cutting work position, the handling cover 61 is positioned at the retracted position so that the front end of the feed chain 6a is exposed, while the supply guide body 41 is not cut. When in the work position, the hand handling cover 61 is located at the hand handling work position where the hand handling cover 61 has advanced upward so as to cover the front end of the feed chain 6a.
The handling cover 61 is positioned at the retracted position to expose the front end portion of the feed chain 6a, so that the cereals can be conveyed effectively, while the supply guide body 41 is moved around the pivot shaft 42 from the cutting position. When the handling handle 61 is rotated and moved to the non-cutting operation position to perform the handling operation, the handling handle 61 is interlocked and positioned at the handling operation position, so that the front end of the feed chain 6a is Since it is covered by the handling cover 61, it is possible to protect the handling operator from an accident that contacts the feed chain 6a.

In the present embodiment, one end portion of the operation wire 62 is fixed to the connecting portion 41 a of the supply guide body 41.
On the other hand, the handle cover 61 is operatively connected to a connection link 65 to which the other end of the cover operation wire 62 is fixed via a first link and a second link. More specifically, one end of the first link 63a is pivotally supported at the lower end of the front end of the handling cover 61, and the other end of the first link 63a is one end of the second link 63b. Is supported. A pin 64 is fixed to the other end of the second link 63b, and is fitted into a long hole 66 provided in the connection link 65 so that the cover operating wire 62 can move in the pulling direction.
When the pin 64 of the second link 63b is fitted in the long hole 66 of the connecting link 65, when the supply guide body 41 is located at the cutting work position, the cedar on the feed chain 6a Even if the supply guide body 41 is swung, the movement of the pin 64 in the long hole 66 is allowed, so that only the connection link 65 moves, and the handling cover 61 includes the first and second links 63a, The front weight side of the feed chain 6 is held at the retracted position where the front end side of the feed chain 6 is exposed by the weight of the 63b and the handling cover 61.
Therefore, even if the supply guide body 41 is moved by the grain on the feed chain 6a, the handling cover 61 is prevented from inadvertently moving upward so as to cover the front end side of the feed chain 6a. Clogging at the front end side of 6a can be prevented.

  Here, the combine in this embodiment receives the flow rate detection sensor 300 that detects the flow rate of the harvested cereal that is cut by the reaping device 3 and conveyed backward, and the detection signal from the flow rate detection sensor 300 is input. A controller 400 is provided. The controller 400 automatically controls the biasing force variable mechanism 580 based on the detection signal from the flow rate detection sensor 300 so that the biasing force of the pinching spring 58 increases in proportion to the flow rate of the harvested cereal. I do.

  The controller 400 receives the detection signal from the flow rate detection sensor 300 and controls the rotation of the motor 583 to thereby control the operation of the biasing force variable mechanism 580. The controller 400 may be the same as the control computer installed in the combine or may be provided with a dedicated control computer.

In this case, the flow rate of the harvested cereal that is cut by the cutting device 3 and conveyed backward is detected by the flow rate detection sensor 300, and the detection signal is input to the controller 400. Then, the urging force of the pinching spring 58 that urges the supply guide body 41 toward the feed chain 6a based on the detection signal detected by the flow rate detection sensor 300 by the controller 400 is proportional to the flow rate of the harvested grain culm. The biasing force variable mechanism 580 that changes the biasing force of the pinching spring 58 is automatically controlled so as to increase.
Therefore, by automatically controlling the urging force of the pinching spring 58 that urges toward the feed chain 6a in proportion to the flow rate of the harvested cereals detected by the flow rate detection sensor 300, the amount of harvesting can be increased. Therefore, the optimum pinching force can be automatically obtained, and the threshing work efficiency can be improved.
In addition, since the operation of the biasing force variable mechanism 580 is electrically operated, the operator can be easily operated without placing a burden on the operator.

This will be described in more detail.
As shown in FIG. 1, the flow rate detection sensor 300 is positioned below the vertical conveyance device 24 a, and has a fixed portion 310 fixed to the cutting frame 21 and a base end portion fixed to the fixed portion 310. 24 has a swinging portion 320 that is pivotally supported in the transporting direction of 24 and whose tip is positioned in the harvested corn straw transporting path of the vertical transporting device 24a. The swing part 320 is configured to be swingable from a position substantially orthogonal to the transport direction of the vertical transport device 24a toward the downstream side (rear) in the transport direction, and is a coil spring wound around a swing shaft. (Not shown) or the like is biased toward the upstream side (forward) in the transport direction.
The flow rate detection sensor 300 is configured to detect the swing angle of the swing unit 320 (the angle from the orthogonal position). The controller 400 receives a detection signal from the flow rate detection sensor 300, and calculates the flow rate of the harvested cereal mash that is transported through the vertical transport device 24a from the swing angle. Here, it is determined that the flow rate of the harvested cereal meal is larger as the swing angle, which is an angle from the orthogonal position, is larger.
In addition, the installation position of the flow rate detection sensor 300 is not particularly limited, but when the cutting device 3 corresponding to a plurality of strips is provided, the flow detection sensor 300 is installed downstream (backward) from the point where the transport paths for each strip join together. By doing so, it is possible to detect the total flow rate of the cereals conveyed to the feed chain 6a by one flow rate detection sensor 300.

In the present embodiment, the controller 400 controls the rotation of the motor 583 based on the detection signal detected by the flow rate detection sensor 300.
Specifically, when the flow rate detection sensor 300 detects an increase in the flow rate of the harvested cereal rice cake, the drive gear 584 is rotated by the rotation of the motor 583 so that the second end 58b of the pinch spring 58 is the first. The driven gear 585 (spring length variable member 582) is rotated in a direction away from the end portion 58a (counterclockwise in FIG. 7). On the other hand, when the flow rate detection sensor 300 detects a decrease in the flow rate of the harvested cereal meal, the drive gear 584 is reversely rotated by the rotation of the motor 583, and the second end 58b of the pinch spring 58 is the first end. The driven gear 585 (spring length variable member 582) is rotated in a direction approaching 58a (clockwise in FIG. 7).
In this way, the biasing force of the supply guide body 41 can be easily and automatically controlled by easily changing the spring length of the pinching spring 58 attached eccentrically to the axis of the driven gear 585.

The combine in this embodiment includes an ON / OFF switch 510 that turns on / off automatic control of the biasing force variable mechanism 580 and a manual switch 520 that manually controls the biasing force variable mechanism 580. These switches 510 and 520 are configured to be able to transmit control signals to the controller 400.
These switches 510 and 520 are preferably provided in the vicinity of the driver's seat 14. The ON / OFF switch 510 is a changeover switch such as a push button switch or a toggle switch, for example, and the manual switch 520 is a volume switch such as a rotary switch, for example.

  When the ON / OFF switch 510 is turned off, the controller 400 causes the biasing force variable mechanism 580 to adjust the biasing force of the pinching spring 58 to a biasing force corresponding to the operation amount of the manual switch 520. Perform operation control.

In this case, when the ON / OFF switch 510 is turned on, the biasing force variable mechanism 580 (the motor 585 thereof) is automatically controlled, while the manual switch 520 is operated during the OFF operation, so Based on this, the biasing force variable mechanism 580 is controlled to operate via the controller 400, and the biasing force of the pinching spring 58 is manually changed.
For example, when the manual switch 520, which is a rotary switch, is rotated clockwise while the ON / OFF switch 510 is in the OFF state, the motor 583 is driven via the controller 400, and the second end 58b of the pinch spring 58 is driven. The spring length variable member 582 to which is attached rotates in the counterclockwise direction, and the urging force directed toward the feed chain 6a of the supply guide body 41 increases. Conversely, when the manual switch 520 is rotated counterclockwise, the motor 583 is driven via the controller 400, and the spring length variable member 582 to which the second end 58b of the pinch spring 58 is attached rotates clockwise. The urging force of the supply guide body 41 directed to the feed chain 6a is reduced.
The manual switch 520 can be operated even during the cutting operation. That is, it is possible to manually change the urging force of the pinching spring 58 while performing the cutting operation.
Thus, by operating the ON / OFF switch 510 and the manual switch 520, it is possible to easily switch from automatic control to manual control. In addition, manual control of the urging force can be easily performed by an operator of the driver's seat 14.
By enabling such manual control, it is possible to flexibly cope with conditions that cannot be handled by automatic control (for example, soft wrinkles) and operator preferences.

  In this embodiment, the controller 400 determines that the urging force of the pinching spring 58 is the minimum when the flow rate of the harvested cereal is less than the standard flow rate based on the detection signal from the flow rate detection sensor 300. The biasing force variable mechanism 580 is operated so that

In this case, when the flow rate of cereals detected by the flow rate detection sensor 300 becomes equal to or less than the standard flow rate, the biasing force variable mechanism 580 (the motor 583 thereof) is controlled by the controller 400, and the biasing force of the pinching spring 58 is minimized. . That is, when the cutting operation is completed, the motor 583 is arranged so that the second end 58b of the pinch spring 58 is closest to the first end 58a (so that the spring length of the pinch spring 58 is the shortest). Is driven to rotate the spring length varying member 582.
Therefore, in the configuration in which the supply guide body 41 can be switched between the cutting work position and the non-cutting work position, the biasing force of the pinching spring 58 is minimized in the final state of the automatic control, so that the biasing force of the pinching spring 58 is resisted. Thus, it is possible to reduce an operation force when the supply guide body 41 is moved between the cutting work position and the non-cutting work position.
Further, when the supply guide body 41 is moved from the non-cutting work position to the cutting work position, even when the operating force is released (at the time when the pivot shaft 42 that is the fulcrum of the supply guide body 41 is exceeded), The impact force when moving to any position (for example, when the supply guide body 41 abuts on the feed chain 6a) can be reduced, and the safety of the worker and the durability of the supply guide body 41 are improved. Can do.
In addition, since the load on the pinching spring 58 is reduced when not in use, the life of the pinching spring 58 can be extended.

  Further, in the above configuration, when the manual switch 520 is operated when the ON / OFF switch 510 is turned on, the controller 400 attaches the pinching spring 58 when the flow rate of the harvested cereal is less than the standard flow rate. The urging force variable mechanism 580 is initially set so that the urging force becomes an urging force corresponding to the operation amount of the manual switch 520.

In this case, when the manual switch 520 is operated when the ON / OFF switch 51 is turned on, the biasing force of the pinching spring 58 at the standard flow rate or less is set as an initial setting of the biasing force variable mechanism 580 at the time of automatic control. The minimum biasing force is changed manually. That is, the biasing force of the pinching spring 58 can be increased or decreased in advance.
Accordingly, the initial setting in the automatic control can be changed (offset control), and more accurate automatic control can be performed.

The embodiment according to the present invention has been described above, but the present invention is not limited to the above embodiment, and various improvements, changes, and modifications can be made without departing from the spirit of the present invention.
For example, the urging force variable mechanism 580 in the present embodiment is configured to vary the urging force of the pinching spring 58 by an electric operation using the motor 583, but is not limited to this, for example, a manual direct operation or a manual operation It may be by hand (driver's seat) operation. Further, both electric and manual operations may be possible.

8 to 11 show other examples of the operation system of the biasing force variable mechanism in the combine according to the present invention. 8 and 9 are examples of manual direct operation, and FIGS. 10 and 11 are examples of manual hand operation. 9 and 11 are partially enlarged views in the directions of arrows IX and XI in FIGS. 8 and 10, respectively.
As shown in FIG. 8, in the biasing force varying mechanism 590 by direct manual operation, the second end 58b on the other end side of the pinching spring 58 is connected, and the second end 58b with respect to the first end 58a is connected. The spring length variable member 592 is configured to be able to change the relative position (that is, the spring length of the pinching spring 58), and is rotatable about a rotation shaft 591 substantially parallel to the pivot shaft 42. A spring length variable member 592, an urging force change lever 593 extending from the spring length variable member 592 in the radial direction of the rotating shaft 591, and the urging force change lever fixed to the pinching frame 39. And a lever fixing member 594 for restricting the 593 to be held at any one of the predetermined positions.

  As shown in FIGS. 8 and 9, the lever fixing member 594 has a plate portion 594a extending from the sandwiching frame 39 substantially perpendicular to the rotating shaft 591 and substantially perpendicular to the plate portion 594a. And a plurality of claw-shaped regulating portions 594b for regulating an intermediate portion of the urging force changing lever 593. The biasing force changing lever 593 is configured to be tiltable in a direction away from the plate portion 594a and is biased toward the plate portion 594a.

In this case, the biasing force changing lever 593 is tilted in the direction away from the plate portion 594a to release the restriction by the lever fixing member 594, and then rotated around the rotating shaft 591 to thereby change the spring length variable member. 592 rotates around the rotation shaft 591, and the distance of the second end portion 58 b with respect to the first end portion 58 a of the pinching spring 58 is brought into contact with and separated from the first end portion 58 a to vary the urging force of the pinching spring 58.
Then, by positioning the urging force change lever 593 at the desired position toward the plate portion 594a, the claw-like restriction portion 594a restricts the urging force change lever 593. At this time, since the urging force change lever 593 is urged toward the plate portion 594a, the restriction state is maintained.

  On the other hand, in the biasing force variable mechanism 595 by manual hand operation, the operation link 596 extends from the spring length variable member 592 in the radial direction of the rotating shaft 591 instead of the biasing force changing lever 593 as shown in FIG. Furthermore, a hand operating lever 598 provided near the driver's seat 14 and capable of rotating around a rotating shaft 597 substantially parallel to the rotating shaft 591, and in conjunction with the hand operating lever 598. A connection link 599 that rotates about the rotation shaft 597, an operation rod 600 that connects the operation link 596 and the connection link 599, and the traveling body 1 are fixed directly or indirectly to the hand operation lever 598. A hand operation cover 601 that covers the vicinity of the rotation shaft 599 so that the lever can be operated, and the hand operation lever is provided with a plurality of biasing force change levers 593. And a hand operation cover 601 which regulates to hold in any position.

  As shown in FIG. 11, the hand operation cover 601 has a notch 602 in which the hand operation lever 598 is rotatable in a direction substantially perpendicular to the rotation shaft 591 and movable in a direction substantially along the rotation shaft 591. Is provided. The hand operating lever 598 is configured to be tiltable in a direction along the rotation shaft 591.

In this case, the hand operation lever 598 is tilted in a direction substantially along the rotation shaft 591 to release the restriction by the notch 602 of the hand operation cover 601 and then rotated around the rotation shaft 591. The spring length variable member 592 rotates around the rotation shaft 591 via the connection link 599, the operation rod 600, and the operation link 596 interlocked with the hand operation lever 598, so that the first end portion 58a of the pinching spring 58 is moved. The urging | biasing force of the said pinching spring 58 is varied by making the distance of the 2nd end part 58b contact / separate.
Then, the notch 602 of the hand operation cover 601 regulates the hand operation lever 598 by tilting the hand operation lever 598 along the notch 602 in a direction substantially along the rotation shaft 591 at a desired position. Hold.

Thus, even when the biasing force of the pinch spring 58 is changed by manual operation, the biasing force variable mechanism is used to bias the pinch spring that biases toward the feed chain in accordance with the flow rate of the harvested cereal straw. Therefore, the optimum pinching force can be set according to the amount of cutting, and the threshing work efficiency can be improved.
Further, even when manual operation is performed, the biasing force of the pinching spring 58 can be easily and stably changed by a lever operation with a mechanical and simple configuration without performing an adjustment operation using a separate tool.
In addition, when the urging force variable mechanism 595 by hand operation is used, it is possible to adjust the urging force while performing the cutting operation.

FIG. 1 is a left side view of a combine according to an embodiment of the present invention. FIG. 2 is a plan view of the combine in one embodiment of the present invention. FIG. 3 is a side view of the feed chain device of FIG. FIG. 4 is a front view of the feed chain device of FIG. FIG. 5 is a partially enlarged view of FIG. FIG. 6 is a partially enlarged view of FIG. FIG. 7 is a partially enlarged view in the vicinity of the biasing force variable mechanism of FIG. FIG. 8 is a diagram showing an example of manual direct operation of the operation system of the biasing force variable mechanism in the combine according to the present invention. FIG. 9 is a partially enlarged view in the arrow IX direction of FIG. FIG. 10 is a diagram showing an example of manual hand operation of the operation system of the biasing force variable mechanism in the combine according to the present invention. FIG. 11 is a partially enlarged view in the direction of arrow XI in FIG.

Explanation of symbols

3 reaping device 5 threshing device 6 feed chain device 6a feed chain 36 pinching device 360 pinching device 41 supply guide body 410 supply guide device 42 pivot shaft 58 pinching springs 580, 590, 595 biasing force variable mechanism 300 flow rate detection sensor 400 Controller 510 ON / OFF switch 520 Manual switch

Claims (5)

A threshing process for a harvesting device disposed in front of the machine body, a feed chain device that inherits a harvested cereal that is harvested by the harvesting device and conveyed backward, and a cereal that is conveyed backward by the feed chain device A threshing device that performs cutting, a pinching device that has a pinch for pinching a harvested wheat bran between the feed chain in the feed chain device, and a harvester that is sent from the harvesting device in front of the pinch A combine comprising a supply guide device having a supply guide body for pressing cereals toward the feed chain,
The supply guide device includes: a supply guide body that is supported so as to be rotatable about a pivot shaft along a width direction of the machine body so as to be in contact with and away from the feed chain; and the supply guide body to the feed chain. A combiner comprising: a pinch spring that biases toward the head and a biasing force variable mechanism that can change the biasing force of the pinch spring. A flow rate detection sensor that detects the flow rate of the harvested cereal that is cut by the reaping device and conveyed backward; and a controller that receives a detection signal from the flow rate detection sensor.
The controller performs automatic control of the biasing force variable mechanism based on a detection signal from the flow rate detection sensor so that the biasing force of the pinching spring increases in proportion to the flow rate of the harvested grain straw. The combine according to claim 1.   When the controller determines that the flow rate of the harvested cereal is less than or equal to the standard flow rate based on the detection signal from the flow rate detection sensor, the biasing force variable so that the biasing force of the pinching spring is minimized. The combine according to claim 2, wherein the mechanism is operated. An ON / OFF switch for turning ON / OFF the automatic control of the biasing force variable mechanism;
A manual switch for manually controlling the biasing force variable mechanism,
In the OFF operation of the ON / OFF switch, the controller controls the operation of the biasing force variable mechanism so that the biasing force of the pinching spring becomes a biasing force corresponding to the operation amount of the manual switch. The combine according to claim 2 or 3. An ON / OFF switch for turning ON / OFF the automatic control of the biasing force variable mechanism;
A manual switch for manually controlling the biasing force variable mechanism,
During the OFF operation of the ON / OFF switch, the controller controls the operation of the biasing force variable mechanism so that the biasing force of the pinching spring becomes a biasing force according to the operation amount of the manual switch,
When the manual switch is operated during the ON operation of the ON / OFF switch, the controller determines that the biasing force of the pinching spring when the flow rate of the harvested cereal mash is equal to or less than the standard flow rate corresponds to the operation amount of the manual switch. The combine according to claim 3, wherein initial setting of the biasing force variable mechanism is performed so as to obtain a biasing force.

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