JP3332778B2 - Pre-processing unit structure of combine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a raising device and a cutting device acting on a planted grain stalk, which are slidably operable in a lateral direction of a traveling machine body between a re-cutting position and a middle splitting position. The transport end side of the grain culm transport device that inherits the culm and pinches and transports it to supply it to the threshing feed chain is connected to the traveling machine rotatably around the first horizontal axis and the second vertical axis of the machine. An operation arm, which is vertically supported and swingably driven by a cutting frame supporting the raising device and the cutting device, moves the transfer start end side of the grain culm transfer device through the interlocking link around the first shaft center. The present invention relates to a pre-processing unit structure of a combine configured to perform a handling depth adjustment by swinging up and down.

[0002]

2. Description of the Related Art The above-mentioned combine is such that even if the raising device and the cutting device are slid in the lateral direction of the machine body to switch between the re-cutting work position and the middle splitting work position, the grain culm conveying device can be rotated around the second shaft center. By swinging in the lateral direction of the machine, the transport end side of this grain culm transport device is maintained at a position where grain culm can be easily supplied to the threshing feed chain, and the transport start end side is located at the rear of the reaper. By moving the culm conveying device, the culm conveying device can supply the cut culm to the threshing device without any trouble. This makes it possible to set the raising device and the mowing device to the middle splitting work position, and to perform the middle splitting operation while easily avoiding stepping down the non-cutting target grain culm located on both sides of the cutting target culm by the traveling device. The cutting device and the cutting device are set to the re-cutting operation position, and the non-cutting target culm located on one lateral side of the cutting target culm is stepped down by the traveling device, or the traveling device is used to mud the uncut culm. It is also possible to perform the cutting operation while easily avoiding the problem.

[0003] Further, in both of the cutting operation and the splitting operation, the handling depth can be adjusted by oscillating the grain culm conveying device around the first axis with the operation arm, so that the harvested grain culm can be adjusted. Even if the height of the culm changes, it is possible to work while adjusting the handling depth to an appropriate one for threshing.

[0004]

In this type of combine, when the raising device and the mowing device slide laterally, the operating arm moves in the lateral direction of the machine together with the raising device, while the interlocking link and the grain stalk transport device are moved. Is pivoted around the second shaft center on the transfer end side of the grain culm transfer device and moves in the lateral direction of the machine body. Thereby, the connection posture of the interlocking link to the operation arm changes as the raising device and the mowing device slide horizontally. When the connection posture of the interlocking link to the operation arm changes, the operating force acting to press the grain stalk transport device against the lifting guide changes when the grain stalk transport device is raised and lowered, and the grain stalk transport device and the lifting guide Changes the frictional force, and the lifting speed of the grain culm conveying device changes. In addition, since the operation arm is operated to swing up and down, even if the angular velocity at which the operation arm swings up and down is constant, grain culm transport is performed as the operation arm swings up and down the unit angle. The stroke at which the device moves up and down differs depending on the swing position of the operation arm. Therefore, when the handling depth is adjusted, the vertical movement speed of the transport start end side of the grain culm transport device is
This differs depending on the connection posture of the interlocking link and the swing position of the operation arm.

[0005] If the speed of raising and lowering the conveying start end of the cereal culm conveying device when the handling depth is adjusted differs depending on the swing position of the cereal culm conveying device, for example, the shallow handling side responds quickly to changes in culm height. Even if the handling depth can be adjusted, the handling depth adjustment can be performed with good responsiveness, such as when the handling depth adjustment is delayed on the deep handling side, and the handling depth accuracy deteriorates. SUMMARY OF THE INVENTION An object of the present invention is to provide a combine which can perform both the re-harvesting operation and the middle-slitting operation, but can adjust the handling depth with high accuracy as a whole operation.

[0006]

The constitution, operation and effect of the invention according to claim 1 are as follows.

[Structure] A raising device and a cutting device acting on a planted grain culm are provided so as to be freely slidable in a lateral direction of a traveling machine body between a re-cutting work position and a middle splitting work position, and inherit the harvested grain culm and hold it. The transport end side of the grain culm transport device that transports and supplies it to the threshing feed chain is connected to the traveling machine so as to be rotatable around a first axis centering on the machine body side and a second axis centering on the machine body up and down direction. An operating arm vertically swingably supported by a mowing frame supporting the device and the mowing device swings the conveying start end side of the grain culm conveying device up and down around the first axis through an interlocking link. In the pre-processing unit structure of the combine, which is configured to adjust the handling depth, the operating arm is driven at a unit angular velocity in a state where the raising device and the mowing device are located at the recycle work position. The difference between the highest lifting speed and the lowest lifting speed that the grain culm conveying device appears when moving and raising and lowering the grain culm conveying device over the entire stroke for adjusting the depth is the raising device and the mowing device. When the operating arm is driven at a unit angular speed in a state where is positioned at the middle splitting work position, and the culm conveying device is moved up and down over the entire stroke for adjusting the depth of the cereal culm, the maximum moving speed of the culm conveying device appears. The operation arm and the interlocking link are attached so as to be smaller than the difference between the operation arm and the minimum elevating speed.

[Operation] In this type of combine, as described at the beginning, as the raising device and the mowing device slide laterally, the connection posture of the interlocking link to the operation arm changes. In addition, the elevating speed of the grain culm transport device changes depending on the operation position of the operation arm. Further, in the combine harvesting, the re-harvesting work is generally performed more frequently and more frequently than the middle split work. In view of the above, the degree of attachment of the interlocking link and the operation arm is appropriately set, and the difference between the maximum lifting speed and the minimum lifting speed of the grain stalk transport device when the handling depth is adjusted during the harvesting operation is medium. The speed difference is smaller than the speed difference during the split operation. That is, when the difference between the maximum lifting speed and the minimum lifting speed of the grain culm conveying device when the handling depth is adjusted is large, the difference in responsiveness between when the handling depth can be adjusted quickly and when the handling depth cannot be adjusted quickly And large amounts of cereal stalks that are delayed in regulation are produced.
For this reason, if the difference between the maximum lifting speed and the minimum lifting speed of the grain stalk transport device when the handling depth is adjusted during the re-harvesting operation is larger than the speed difference during the middle split operation, the re-harvesting operation The difference in responsiveness between the case where the handling depth can be adjusted quickly and the case where the handling depth cannot be adjusted quickly becomes large. The time and the number of times may increase. On the other hand, since the speed difference at the time of the cutting operation is smaller than the speed difference at the time of the intermediate cutting operation, the responsiveness between the case where the handling depth can be quickly adjusted during the cutting operation and the case where the handling depth cannot be adjusted quickly can be improved. The difference is small, and when performing both the middle splitting work and the re-harvesting work, even if there is a grain culm that is delayed in adjustment, it is possible to work while controlling the amount to a small percentage of the time and number of times to perform the entire work .

[Effect] In the division which can be performed while adjusting the handling depth for both the re-harvesting and the middle-slicing operations, the amount of time required for performing the entire operation even if a grain stalk that has been delayed in the adjustment of the handling depth appears. The work can be performed while adjusting the handling depth with high accuracy as a whole.

The construction, operation and effect of the invention according to claim 2 are as follows.

In the construction according to the first aspect of the present invention, the mowing frame supporting the raising device and the mowing device is slidably connected to a support portion of a traveling body so as to be slidable in the lateral direction of the machine body. The sliding operation of the device and the mowing device with respect to the traveling body is enabled.

[Operation] The cutting frame supporting the raising device and the mowing device is divided into a distal portion supporting the raising device and the mowing device, and a proximal portion connected to the supporting portion of the traveling body. By configuring the side portion to be slidable with respect to the proximal portion, the raising device and the reaping device can be slid laterally between the cutting operation position and the intermediate operation position. However, in this case, the slide portion is located on the distal end side of the cutting frame, and the distal end side of the cutting frame becomes heavy due to the slide structure, and trouble such as muddy water jumping from the field enters the slide portion is likely to occur. On the other hand, since the mowing frame slides between the support portion of the traveling body, the heavy sliding part is located on the traveling body side, and the sliding part is hardly muddy. At a high level, it can slide the raising device and the mowing device sideways.

[Effect] The slide portion is positioned on the side of the traveling machine body so that the front and rear weight of the entire combine can be well balanced, and the slide portion is less liable to enter into muddy water and the like, and is unlikely to cause a failure or a slide defect. Can be used well.

The structure, operation and effect of the invention according to claim 3 are as follows.

[Configuration] In the configuration according to the first or second aspect of the present invention, the second axis is set to an inclined axis which is located closer to the inside of the fuselage at a higher level toward the front of the fuselage.

[Operation] The grain culm conveying device generally changes the posture of the conveyed grain culm to a sideways posture at the end of conveyance and supplies the culm to the threshing feed chain. Even if it is slid to the middle dividing work position, it swings in the lateral direction around the second axis of the inclined posture, and maintains the inclined posture in which the grain culm can be easily supplied to the threshing feed chain to smoothly supply the grain culm. I will do it.

[Effect] In both of the re-harvesting operation and the middle splitting operation, the thresh culm can be supplied to the threshing hood chain smoothly and threshing can be performed efficiently.

The structure, operation and effect of the invention according to claim 4 are as follows.

[Structure] In the structure of the invention according to any one of claims 1 to 3, the operating arm and an electric motor for driving the operating arm are raised from a side of the mowing frame that is running on the traveling machine. While extending to the upper end of the transmission device and supporting it on the transmission frame part to be connected,
The operating arm is configured to suspend and support the grain culm transport device via the interlocking link.

[Operation] Since the operation arm and the electric motor are supported by the transmission frame, the operation arm and the motor are arranged at a high level so that the mud does not easily adhere even if the mud jumps up from the field scene. The transfer device can be moved up and down.

[Effect] Even in the case of a wet field, it is possible to work while adjusting the depth of the harvested culm accurately and reliably by avoiding the occurrence of failure or malfunction due to mud adhering to the operation arm or the electric motor. .

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a pre-processing unit 20 for causing planted grain culms such as rice and wheat and performing processing such as cutting is provided with a pair of left and right crawler-type traveling devices 1 and 2.
1 and connected to the front of a traveling body having a driving unit 2 so as to be able to swing up and down around an axis X in the lateral direction of the body, and handle the cut culm from the pre-processing unit 20. The traveling machine is provided with a threshing device 3 for performing threshing, a grain tank 4 for storing threshing grains, and a waste straw processing device 6 for shredding and bundling threshing waste straws, to constitute a combine.

As shown in FIGS. 2 to 7, a bearing holder 9 supported by one of a pair of right and left columns 8, 8 erected on a body frame 7 of the traveling body, and a bearing holder 9 supported by the other column 8. The transmission shaft 10 having the first shaft center X is rotatably mounted over the
A transmission shaft portion located between the two bearing holders 9, 9 serves as a first support portion 10a of the traveling body, and a base end portion 21a is connected to the first support portion 10a so as to be relatively rotatable and slidable. A cutting main frame 21; a plurality of weeding rods 22 extending forward from the distal end portion of the cutting main frame 21 and being arranged side by side in the fuselage; and one end of a base end 21a of the cutting main frame 21 A first motive transmission case 23 as a transmission frame portion extending forward from the transmission case portion of the fuselage;
A vertical transmission case 24 having an upper end connected to the distal end of the raised transmission case 23;
Cutting blade transmission case 2 in the vertical direction of the machine body, which is connected to the lower end of the blade and the tip of the cutting main frame 21.
5 and a second raising transmission case 26 erected on one lateral side of the tip of the mowing main frame 21,
A cutting frame 27 of the preprocessing unit 20 is formed. Then, the planted grain culm is weeded into a culm to be cut and a non-cutting culm, and the culm to be cut is divided into weeding rods 22.
Side weeding tools 28a to be introduced into the raising path between the two
Is fixed to the distal end side of the weeding rods 22 located on both lateral outer sides of the plurality of weeding rods 22 and weeds the culm to be cut into one and the other of a pair of right and left pulling paths. The center weeding tool 28b to be introduced is fixed to the distal end side of the weeding rod 22 located at the center of the plurality of weeding rods 22.
One of a pair of left and right raising devices 29, 29 for raising and processing the culm to be cut from 8a, 28b by a raising claw 29a for ascending movement, is used for the weeding rod 22 and the second raising transmission case 26. And the other of the two raising devices 29, 29.
Are mounted over the weeding rod 22 and the front end side of the first raising transmission case 23, and both raising devices 29, 29
Clipper-type cutting device 30 for cutting and processing the root side of the planted cereal stem on which the corn is acting, and cutting device 30 for cutting the harvested cereal stem
A pair of left and right locking and conveying devices 31, 31 which are gathered at a substantially central portion in the lateral direction of the body and sent to the rear side of the body.
And a pair of left and right rotating bodies 32, 32 for feeding the root side of the harvested culm from the both locking and conveying devices 31, 31 to the rear side of the machine.
Is attached to the front end of the cutting main frame 21, and the mowing grain culm from the cutting device 30 is actuated in a standing posture by a locking conveying device portion 33a acting on the tip side and a pinching conveying device portion 33b acting on the stock side. The grain is supplied to the transporting end of the threshing feed chain 3a of the threshing apparatus 3 by inheriting and transporting the paper to the rear of the machine along the transport guide plate 34, changing the posture to a falling posture in which the tip side falls down inside the machine at the transport end side. The culm transporting device 33 is disposed between the rotating body 32 and the threshing hood chain 3a to constitute the pretreatment unit 20.

As shown in FIGS. 3 and 6, an elevating operation frame 36, which is positioned below the base end of the cutting main frame 21 so that the operation part 36a is in contact with the cutting main frame 21, is attached to the pair of columns 8 by a mounting shaft part 36b. When the lift cylinder 37 attached to the operation section 36a and the body frame 7 is extended and contracted while being attached to the upper end sides of the mounting section 36, the elevating operation frame 36 is driven by the lift cylinder 37 by the shaft of the attachment shaft 36b. It is configured to swing up and down with respect to the column 8 around the core, and to swing the cutting main frame 21 up and down with respect to the first support portion 10a by the operation portion 36a. Cutting main frame 21
The slide operation tool 38 which is located so as to sandwich the base end side between the pair of left and right pressing action portions 38a, 38a
An electric traverse motor 40 is supported by the elevation operation frame 36 via a traverse shaft 39 meshed with a helical ridge 39a so as to perform a feed action, and an output portion 40a is connected to the traverse shaft 39. Is attached to the lifting operation frame 36. When the traverse motor 40 is driven, the traverse shaft 39 is driven in the normal rotation direction or the reverse rotation direction by the driving force of the traverse motor 40, and the slide operation tool 38 is rotated by the detent arm 38b of the operation tool 38. Detent rod 41 attached to the elevating operation frame 36 so as to be locked to
And move it in the lateral direction along the
Is cut by the pressing action portion 38a.
Is configured to slide along the first support portion 10a. Even if the cutting main frame 21 reaches either the left or right stroke end of the machine body which is determined by the horizontal feed stroke of the slide operation tool 38 by the horizontal feed shaft 39, the operating portion 36a of the lifting operation frame 36 is brought into contact with the cutting main frame 21. The operation unit 36a has a length in the machine body lateral direction that can be moved up and down by being in contact with the operation unit 36a.

As shown in FIG.
Input case 4 which is also used as a mounting member provided on the transport end side
2 is rotatably connected to a shaft end portion 10b protruding laterally outside the body from one bearing holder 9 of the transmission shaft 10, and as shown in FIGS. A link connecting arm 43 extending from the transfer device frame 33f at the start end is connected to a lower end of an interlocking link 45 hanging down from an operation arm 44 supported by the first raised transmission case 23. The input case 42 includes:
The above-mentioned locking and conveying device portion 33a and the holding and conveying device portion 3
3b is rotatably connected to a transfer device drive shaft 33e that drives the transfer endless rotation chains 33c and 33d, and the transfer device drive shaft 33e is connected to the transmission shaft 1e.
A second axis Y is inclined with respect to the axis X of 0 as shown in FIGS. 2, 3 and 5
As shown in the figure, a fixed side member 47a fixed to a support arm 46 extending from the carrier frame 33f at the transport start end side of the grain culm transporter 33, and a movable member slidably supported by the fixed side member 47a. The side member 47b constitutes a telescopic connecting member 47 on the grain culm conveying device 33 side, and the mowing is formed by an arc-shaped guide rail which is long in the vertical direction of the machine body and penetrates the connecting arm portion 47c of the movable side member 47b. The coupling member 48 on the frame 27 side is connected to the transmission case 24 of the mowing frame 27 and the pair of locking and conveying devices 31,
31, and the movable side member 47b is connected to the connecting member 48.
It is configured to be able to slide along. As a result, the transfer end side of the grain culm transfer device 33 is
As a result, the second support portion 10 comprising the shaft end portion of the traveling body
b, the transfer device drive shaft 33 is rotatable around a first shaft center X which is the same shaft center as the shaft center X and is lateral to the body.
e, which is rotatably connected around a second axis Y in the vertical direction of the fuselage, which is in an inclined position located on the inner side of the fuselage on the front side of the fuselage toward the higher level as the level is higher. The transport start end side is connected to the cutting frame 27 by a connecting member 47 and 48 so as to be relatively slidable in the vertical direction of the machine body and to be movable integrally in the horizontal direction of the machine body. It is suspended and supported. Therefore, when the operation arm 44 is swung up and down, the whole grain culm conveying device 33 is swung with respect to the traveling body around the first axis X, and the conveying start end side is connected to the connecting member 48.
Up and down along And the cutting frame 27 is the first
When the stalk moving device 33 slides along the support portion 10a, the whole grain culm conveying device 33 swings about the second axis Y with respect to the traveling machine body, and the conveying start end moves in the machine body lateral direction. At this time,
The connecting member 47 expands and contracts, and absorbs a change in the interval between the connecting point of the grain culm conveying device 33 to the second support portion 10b and the connecting point to the connecting member 48.

As a result, when the lateral feed motor 40 is operated, the cutting frame 27 is slid in the lateral direction of the body with respect to the first support portion 10a by the driving force of the lateral feed motor 40 as shown in FIGS. Weeding tools 28a, 28
b, raising device 29, mowing device 30, locking and conveying device 3
1 and the rotating body 32 can be slid in the lateral direction with respect to the traveling machine body, and regardless of the sliding movement, the transport starting end side of the grain culm transporting device 33 is a predetermined cutting grain behind the locking transporting device 31 and the rotating body 32. The grain culm transport device 33 can be swung with respect to the traveling machine body around the second axis Y so as to be located at the culm receiving point. Then, as shown in FIG. 7, when the cutting frame 27 is slid to the stroke end on the left side of the machine body and attached to the left side of the first support portion 10a, the weeding tools 28a and 28b, the raising device 29, and the cutting device 30 are mounted. The re-cutting work position is shifted to the side opposite to the driving unit side of the traveling body, and as shown in FIG.
When the mowing frame 27 is slid to the stroke end on the right side of the machine body and attached to the right side of the first support portion 10a, the weeding tools 28a and 28b, the raising device 29 and the mowing device 30 are moved from the re-cutting work position to the operating unit. It is configured so that it is located at the middle split work position closer to 2. When the weeding tools 28a and 28b, the raising device 29, and the cutting device 30 are set to any of the re-cutting position and the middle splitting position, the cutting frame 27 and the grain culm are operated by operating the lift cylinder 37. The transport device 33 can be vertically swung about the traveling body around the axis X,
The pre-processing unit 20 includes the weeding tools 28a and 28b,
And the lowering position where the cutting device 30 is located near the ground, and the ascending non-operation position where the weeding tools 28a and 28b, the raising device 29 and the cutting device 30 are far away from the ground.

As shown in FIGS. 3 and 5, the operation arm 44 is rotatable about a third axis Z of the support shaft 49 on a support shaft 49 supported by the first raising transmission case 23. It is supported. A fan-shaped operation gear 50 is rotatably provided on a mounting cylinder portion 44a of the operation arm 44 which is fitted on the support shaft 49, and the operation gear 50 is provided with an output gear 51a.
The first depth raises a motor-depth adjusting motor 51, which is an electric motor configured to be driven at a constant rotational speed so that there is no change in output while meshing with the motor supporting member 52 supported by the transmission case 23. , A spring pin 53 connected to the operation arm 44 and the operation gear 50, and a base end 21 a of the cutting main frame 21.
A pulling spring 55 attached to a spring hook arm 54 provided in the device 3 moves the operation arm 44 to the grain conveying device 3.
3 is configured to be urged to swing in the pulling direction.
Accordingly, when the operating depth adjusting motor 51 is operated, the operating arm 44 is moved around the third axis Z in the machine lateral direction due to the driving force of the operating depth adjusting motor 51 and the operating force of the lifting spring 55. Swing up and down, linked link 4
5, the transport start end side of the grain culm transport device 33 is moved up and down around the first axis X. When this lifting operation is performed, the transport start end of the pinching transport device portion 33b of the cereal culm transport device 33 moves in the culm body direction with respect to the harvested grain culm supplied from the locking transport device 31 and the rotating body 32. Then, the holding and transporting device 31 and the rotating body 32
The grain stalk pinching position at the time of receiving and pinching the harvested grain stalk changes. Then, when the grain culm transport device 33 supplies the transported grain culm to the threshing feed chain 3a, the position where the threshing feed chain 3a receives and clamps changes in the direction of the culm body, and the mowing inserted into the handling room by the threshing feed chain 3a. The length of the cereal stem changes. Therefore, the grain stalk transport device 33
Is operated to swing around the first axis X to adjust the handling depth in the threshing device 3. The handling depth can be adjusted by operating the handling depth adjusting motor 51.

As shown in FIG. 2 and FIG. 3, the locking and conveying device portion 33a and the nipping and conveying device portion 33b are shown in FIG.
The two culm length sensors 56a, 5 arranged in the direction of the culm of the transported grain culm are provided on a frame 33j provided in the grain culm transport device 33 so as to support the transport guide rails 33g, 33h as shown in FIG.
6b, a culm length detection mechanism 56 for detecting the culm length of the cut grain culm by both culm length sensors 56a and 56b, and a handling depth control mechanism 57 linked to the culm length detection mechanism 56. It is linked to an adjusting motor 51.

The two culm length sensors 56a and 56b are contact type sensors which contact the grain culm at the tip of the conveying path where the culm conveying device 33 conveys the cut culm along the conveying guide plate 34. I have. When both of the culm length sensors 56a and 56b come into contact with the grain culm, the culm length detection mechanism 56 detects that the culm length of the cut grain culm is longer than the standard length, and pinches and transports the culm length sensor 56a and 56b. When the culm length sensor 56a closer to the clamping and conveying device portion 33b contacts the cereal culm without the culm length sensor 56a having a greater distance from the device portion 33b coming into contact with the cereal culm, the culm height of the harvested cereal culm decreases. If both the culm length sensors 56a and 56b do not come into contact with the cereal culm, it is detected that the culm height of the cut culm is shorter than the standard length, and each detection result is converted into an electric signal. Output to the handling depth control mechanism 57. The handling depth control mechanism 57 inputs the detection result longer than the standard length from the culm length detection mechanism 56 to the ascending side of the grain culm transport device 33, and inputs the detection result shorter than the standard length from the culm length detection mechanism 56 to the cereal culm. Transfer device 3
3, the handle depth adjusting motor 51 is automatically rotated and operated, and when the culm length detecting mechanism 56 is in a standard length detection state, the handle depth adjusting motor 51 is stopped. It is. That is, the handling depth control mechanism 57
Controls the depth so that the tip of the transported grain culm passes between the culm length sensors 56a and 56b, the culm length sensor 56a is in a non-contact state, and the culm length sensor 56b is in a contact state.

As shown in FIG. 4, an input belt pulley 11 is provided at one end of the transmission shaft 10 so as to be rotatable integrally therewith.
0, the transmission shaft portion 10a of the transmission shaft 10 is integrally rotatably and slidably provided with a first output gear 60 and a transmission gear 61 meshing with the first output gear 60. A transmission shaft 62, which is provided inside the transmission case portion and to which the transmission gear 61 is integrally rotatably connected to one end side, is provided inside the first raising transmission case 23, and the first raising transmission is provided. The case 23 is configured to transmit the rotational power of the transmission shaft 10 to the right side raising device 29 by the transmission shaft 62. The rotating power of the transmission shaft 62 is first raised, and is transmitted from the transmission case 23 to the right rotating body 32, the right locking and conveying device 31, and the cutting device 30 via the transmission case 24 and the cutting blade transmission case 25. The rotational power of the right rotating body 32 is transmitted to the left rotating body 32 by the engagement of the left and right rotating bodies 32, 32, and the rotating power of the left rotating body 32 is transmitted to the left locking conveyance device 31. It is configured as follows. The output from the cutting blade transmission case 25 is secondly raised and transmitted to the left raising device 29 via the transmission case 26. A second output gear 63 provided on the shaft end portion 10b of the transmission shaft 10 so as to be integrally rotatable;
A transmission gear 64 meshed with the input case 4 and rotatably mounted integrally with the transfer device drive shaft 33e.
2 and is configured to transmit the rotational power of the transmission shaft 10 to the locking and conveying device portion 33a and the sandwiching and conveying device portion 33b, so that each device of the preprocessing unit 20 and the rotating body 3
2 is enabled.

That is, when performing the middle splitting operation, the cutting frame 27 is slid laterally to the operation unit side by the lateral feed motor 40 and attached to the right end side of the first support unit 10a, and the weeding tools 28a, 28b, the raising device 29, reaper 30
To the working position. Then, as shown in FIG. 8, the crawler traveling device 1 travels at a position as far away as possible from the non-cutting target culm b located on both lateral sides of the cutting target cereal stem a toward the cutting target cereal stem a, Work can be performed while easily avoiding stepping down the non-rearing target grain stem b by the traveling device 1. And when performing the re-harvesting work,
The cutting frame 27 is laterally slid to the side opposite to the driving unit side by the lateral feed motor 40 and attached to the left side of the first support unit 10b, and the weeding tools 28a, 28b, the raising device 2
9. Move the cutting device 30 to the re-cutting work position. Then, as shown in FIG. 7, the crawler traveling device 1 travels at a position away from the non-cutting target culm b toward the cutting target cereal culm a, and is located on one lateral side of the cutting target cereal culm a. The non-cutting grain culm b is depressed by the crawler traveling device 1 or the uncut grain culm b is
It is possible to work while making it easy to avoid muddyness. In any of the operations, the handling depth control mechanism 57 automatically controls the raising and lowering of the grain culm transport device 33 based on the information from the culm length detecting mechanism 56, and the culm height of the harvested grain culm changes. However, it can work while threshing at an appropriate handling depth.

When the raising device 29 and the reaping device 30 are slid and switched between the re-cutting operation position and the middle splitting operation position, the operating arm 44 slides along with the reaping frame 27 with respect to the traveling machine body, and the grain culm transporting device 33 operates. By swinging around the second axis Y, the lateral movement stroke of the operation arm 44 and the lateral movement stroke of the connection point 43a of the interlocking link 45 with respect to the link connection arm 43 are different. Further, the connection point 43a changes its position both in the lateral direction of the body and in the longitudinal direction of the body. For this reason, the case where the raising device 29 and the cutting device 30 are set to the re-cutting work position (hereinafter, referred to as the time of re-cutting work), and the case where the raising device 29 and the cutting device 30 are set to the middle splitting operation position (hereinafter, referred to as a cutting work position). ,
It is referred to as the middle split operation. ), The connection posture of the interlocking link 45 to the operation arm 44 when the operation arm 44 is operated to a specific operation position such as the lowest operation position PD is different. Further, since the operation arm 44 is operated to swing up and down, even if the angular velocity at which the operation arm 44 swings up and down is constant, the operation arm 44 swings up and down the unit angle. The stroke in which the grain culm transport device 33 moves up and down differs depending on the swing position of the operation arm 44. Further, in both the re-harvesting operation and the middle splitting operation, the interlocking link 45 operated by the operation arm 44 raises and lowers the grain culm transport device 33 while swinging the operation arm 44 in the lateral direction of the machine body. Manipulate. In view of this, the mounting posture of the operating arm 44 with respect to the first raising transmission case 23 so that the connecting posture of the interlocking link 45 with the operating arm 44 at the time of the harvesting operation and the middle splitting operation is as shown in FIG. And the mounting posture of the interlocking link 44 with respect to the link connecting arm 43 are set.

That is, the interlocking link 45 shown by a solid line in FIG. 9 is an interlocking link at the time of harvesting work, and the interlocking link 45 shown by a broken line is an interlocking link at the time of middle splitting work. The operation position PD of the operation arm 44 is the lowest operation position, and the operation position PU is the highest operation position. Operation arm 44 and cutting main frame 2 shown in FIG.
The first lateral movement stroke W is a stroke which is moved when the raising device 29 and the cutting device 30 are switched between the re-cutting work position and the middle split work position. At the time of the harvesting work, the connecting point 43a of the interlocking link 45 with the link connecting arm 43 is in a connecting position located closer to the driving unit than the connecting point 44b with the operating arm 44 in the longitudinal direction of the machine, and the operating arm 44 is When operated to the lowermost operation position PD,
In the side view of the fuselage, the interlocking link 45 and the operation arm 44 are connected to each other at an angle B1, and in the longitudinal direction of the fuselage, the interlocking link 45 is connected to the horizontal line S2 passing through the connection point 44b.
With respect to the inclination angle B2. At the time of the mid-split work, the connecting point 43a of the interlocking link 45 with the link connecting arm 43 is in a connecting position located on the side opposite to the driving unit side from the connecting point 44b with the operating arm 44 when viewed in the longitudinal direction of the machine, When the operation arm 44 is operated to the lowermost operation position PD, the interlocking link 45 and the operation arm 44 are connected to each other at an angle B3 that is smaller than the angle B1 when viewed from the side of the body, and when viewed from the front and rear of the body. Then, the interlocking link 45 is inclined with respect to the horizontal line S2 at an inclination angle B4 smaller than the inclination angle B2. In addition, Q shown in FIG.
3b shows a transport start end. W shown in FIG. 7 indicates the position of the cutting main frame 2 when the raising device 29 and the cutting device 30 are switched between the re-cutting work position and the intermediate work position.
1 indicates a sliding stroke, and LE indicates the connection point 4
The distance from 3a to the second axis Y is shown.

Thus, the handling depth adjusting motor 51 is driven at a constant rotational speed to swing the operating arm 44 up and down at a constant angular speed. The grain culm conveying device 33 has a speed characteristic M shown in FIG.
When the handling depth is adjusted during the middle splitting operation, the grain culm transport device 33 moves up and down with the speed characteristic N shown in FIG.

That is, the horizontal axis in FIG.
4 shows the operation position P, and the operation position PD is the operation arm 44.
, The operation position PU is the highest operation position of the operation arm 44. Operation position P0.5 to P9.5
Is an operation position in which the operation arm 44 has risen by 5 degrees from the lowest operation position PD. For example, the operation position P3.5
Is an operation position in which the operation arm 44 is raised 35 degrees from the lowest operation position PD, and the operation position P4 is the operation arm 44
Is an operation position that is raised 40 degrees from the lowest operation position PD. The vertical axis indicates the stroke H in which the transport start end Q in the nipping and transporting device portion 33b of the grain culm transporting device 33 moves up and down as the operation arm 44 moves up and down. For example, during the cutting operation, when the operation arm 44 rises 5 degrees from the lowermost operation position PD to the operation position P0.5, the transport start end Q increases the stroke H3 during that time, and the operation arm 44 moves to the operation position P3. .5 degrees to 5 degrees to the operating position P4
During this time, the transport starting end Q rises the stroke H4, and the operating arm 44 rises 5 degrees from the operating position P9.5 to reach the highest operating position PU, during which the transport starting end Q rises the stroke H2. In the middle split operation, when the operation arm 44 rises 5 degrees from the lowermost operation position PD to the operation position P0.5, the transport start end Q during that time.
Rises the stroke H5, and the operation arm 44 rises 5 degrees from the operation position P3 to the operation position P3.5. During this time, the transport start end Q rises the stroke H6, and the operation arm 44 moves from the operation position P9.5. When the transport start end Q rises by 5 degrees and reaches the highest operation position PU, the transport start end Q is moved to the stroke H1.
To rise.

During the cutting operation, the operation arm 44 is used.
The stroke H (elevation efficiency) at which the transport starting end Q moves upward while the operation arm 44 rises from the lowest operation position PD to the operation position P4 while the operation arm 44 rises by 5 degrees, and the operation arm 44 It decreases as it rises from the operation position P4 to the highest operation position PU. In the middle split operation, a stroke H (elevation efficiency) in which the transport start end Q moves upward while the operation arm 44 rises five degrees.
Increases as the operation arm 44 rises from the lowest operation position PD to the operation position P3.5, and decreases as the operation arm 44 rises from the operation position P3.5 to the highest operation position PU. I will do it. That is, during the cutting operation, the transport starting end Q is moved while the operating arm 44 is raised by 5 degrees.
Is a maximum stroke H4 when the operating arm 44 is at the operating position P4, and is a minimum stroke H2 when the operating arm 44 is at the highest operating position PU. The stroke H at which the transport start end Q moves upward while the operation arm 44 is raised by 5 degrees during the middle split operation becomes the maximum stroke H6 when the operation arm 44 is at the operation position P3.5, and the operation arm 44 is The minimum stroke H1 is reached when reaching the highest operation position PU. Then, the maximum lifting stroke H4 during the cutting operation
Is smaller than the difference between the maximum lifting stroke H6 and the minimum lifting stroke H1 during the middle split operation.

That is, the operating arm 44 is vertically driven to swing at a unit angular velocity determined by the rotation speed of the handling depth adjusting motor 51 to move the cereal culm transport device 33 up and down over the entire stroke for adjusting the handling depth. The transport start end Q of the cereal culm transport device 33 moves up and down at different elevation speeds depending on the operation position of the operation arm 44 and the connection posture of the interlocking link 45, and during the harvesting operation, the operation arm 44 moves to the operation position P4. When the operation arm 44 is operated at the highest operation position PU, the operation arm 44 moves up and down at the lowest speed. At the time of the middle split operation, when the operation arm 44 is moved to the operation position P3.5, it moves up and down at the highest speed, and when the operation arm 44 is moved to the highest operation position PU, it moves up and down at the lowest speed. I do. Then, the difference between the maximum lifting speed and the minimum lifting speed that the grain culm transport device 33 appears during the re-harvesting operation is the difference between the maximum lifting speed and the minimum lifting speed that the grain culm transport device 33 appears during the middle splitting operation. Smaller than. Therefore, when performing the re-harvesting work, the grain stalk transport device 3
The operator can work while adjusting the handling depth in a state where the change width of the ascending / descending speed is small.

[Brief description of the drawings]

FIG. 1 is a side view of the entire combine.

FIG. 2 is a side view of a preprocessing unit.

FIG. 3 is a side view of a grain culm conveying device elevating control unit.

FIG. 4 is a cross-sectional view of a mowing frame mounting portion.

FIG. 5 is a cross-sectional view of a grain culm conveying device.

FIG. 6 is a plan view of a cutting frame slide operation unit.

FIG. 7 is a plan view of the pre-processing unit in a cutting operation state.

FIG. 8 is a plan view of the pre-processing unit in a middle split operation state.

FIG. 9 is an explanatory view showing the mounting posture and operation of the interlocking link.

FIG. 10 is an explanatory diagram showing the elevating characteristics of the grain culm conveying device.

[Explanation of symbols]

 3a Threshing feed chain 10a Supporting portion 23 Transmission frame portion 27 Cutting frame 29 Raising device 30 Cutting device 33 Grain culm transfer device 44 Operation arm 45 Interlocking link 51 Electric motor X 1st axis Y 2nd axis

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-153384 (JP, A) JP-A-2-107119 (JP, A) JP-A-7-213142 (JP, A) 37030 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) A01D 61/00 302

Claims (4)

(57) [Claims] 1. A raising device and a cutting device acting on a planted grain culm are provided so as to be freely slidable in a lateral direction of a traveling machine body between a re-cutting work position and a middle splitting work position, and inherit the harvested grain culm and hold and transport. The transport end side of the grain culm transport device for supplying to the threshing feed chain is connected to a traveling machine body so as to be rotatable around a first axis centering on the machine body side and a second axis centering on the machine body up and down. And an operating arm vertically swingably supported by a cutting frame supporting the cutting device, swings the transfer start end side of the grain culm transfer device up and down around the first axis through an interlocking link. A pre-processing unit structure of a combine configured to adjust a handling depth by operating the operating arm at a unit angular velocity in a state where the raising device and the reaping device are located at a recycle work position. When the lifting and lowering operation of the cereal stalk transport device appears when the lifting and lowering operation is performed over the entire stroke for handling and adjusting the cereal stalk transport device, the difference between the maximum lifting and lowering speed, the raising device and the mowing device are different. When the operating arm is driven at the unit angular speed in the state of being positioned at the middle split work position and the vertical movement of the grain culm transport device appears when the grain culm transport device appears and moves up and down over the entire stroke for adjusting the handling depth of the grain culm transport device, And a pre-processing unit structure of the combine in which the operation arm and the interlocking link are attached so as to be smaller than a difference from a minimum elevating speed. 2. The sliding operation of the raising device and the mowing device with respect to the traveling machine body by connecting the mowing frame supporting the raising device and the mowing device to the support portion of the traveling machine so as to be slidable in the lateral direction of the machine body. 2. The pre-processing unit structure of a combine according to claim 1, wherein: 3. The pre-processing unit structure of a combine according to claim 1, wherein the second axis is set to an inclined axis located at a higher level on the inner side of the fuselage on the forward side of the fuselage. 4. The operation arm and an electric motor for driving the operation arm are supported by a transmission frame portion extending from the traveling body side of the mowing frame to an upper end side of the raising device and connected thereto. The combine pretreatment unit structure according to any one of claims 1 to 3, wherein the operation arm is configured to suspend and support the grain culm transport device via the interlocking link.