JP3359835B2 - 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 conveys it to supply it to the threshing feed chain is rotatably connected to the traveling machine around a first axis centered on the machine body side and a second axis centered on the machine body up and down. An operating arm, which is vertically swingably supported by a pre-processing unit frame supporting the raising device and the mowing device, moves the transfer start end side of the grain culm transfer device around the first shaft center via an interlocking link. The present invention relates to a pre-processing unit structure of a combine configured to perform a swinging operation up and down to adjust a handling depth in a threshing device.

[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, the grain culm transport device swings around a second vertical axis of the machine body on the transport end side, and the operation arm moves the transport start end of the grain culm transport device. Since the side is moved up and down via the interlocking link, the transport starting end of the grain culm conveying device is supported by the operation arm via the interlocking link. For this reason,
When the traveling machine swings, for example, when crossing a ridge, the transport start end side of the grain culm transport device is likely to swing. In addition, when the grain culm transport device swings and the vibration is transmitted to the interlocking link or the operation arm, a load is applied to the interlocking link or the operation arm, and the link or the operation arm is easily deformed. Also,
A load is also applied to the ball joint that connects the interlocking link and the operation arm so as to be swingable relative to each other, so that the joint is easily broken, which causes a problem of durability.
SUMMARY OF THE INVENTION An object of the present invention is to provide a combine capable of adjusting the handling depth of both the harvesting operation and the splitting operation in a state in which the lifting and lowering operation mechanism of the grain culm transport device is durable and has a simple structure. Is to be able to

[0005]

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

[0006] [Structure] A raising device and a cutting device acting on the planted grain culm are provided so as to be freely slidable in the transverse direction of the traveling machine body between a re-cutting work position and a middle splitting work position, and inherit the cut culm and hold the culm. The culm conveying device that conveys and feeds to the threshing feed chain is connected to the traveling machine so as to be rotatable around a first axis centered on the machine body side and a second axis centered on the machine body up and down, and an elevating device; Pre-processing unit supporting the reaper
An operating arm, which is vertically swingably supported by the frame , swings the transport start end side of the grain culm transport device up and down around the first shaft center through an interlocking link, and handles the depth in the threshing device. In the pretreatment unit structure of the combine, which is configured to perform the adjustment, the grain culm transport device includes a connecting arm extending from the frame of the grain culm transport device and having a bent portion on the extending end side, with some said distal arm portion located on the extending end side of the bent portion of the connecting arm coupled to the coupling link, the connecting arm
A proximal arm located proximal to the bent portion
A method for conveying cereal stems of the cereal culm conveying device from the frame
Extending in a direction intersecting the
The side arm portion transfers the grain stem from the base side arm portion
It extends in the direction along the grain conveying direction of the device .

[Operation] Even if the grain culm transport device vibrates, the connecting arm is easily elastically deformed at the bent portion so as to buffer so as not to be easily transmitted to the interlocking link or the operating arm. The load is less likely to be applied to a ball joint or the like connecting the operation arm, so that deformation and the like are less likely to occur. In other words, grain
The culm conveying device moves in the direction that swings up and down around the first shaft center.
It is easy to vibrate, but this vibration is
To effectively control the interlocking link and operation arm.
This effectively reduces vibration transmission .

[Effect] Even if the raising device and the reaping device are slid to the re-cutting operation position or the intermediate split operation position, the cereal culm conveying device is swung so as to carry out predetermined cereal culm conveyance and adjustment of the handling depth. Although it can be operated, it can perform both harvesting and splitting work with appropriate handling depth, even if traveling vibration etc. is transmitted to the grain culm transport device, vibration that is likely to occur in the grain culm transport device is linked And manipulation
Effectively reduce the transmission to the work arm, so that it is difficult to transmit to the interlocking link, the operation arm, and the ball joint that connects the two, so that failure such as deformation does not occur easily
It was made highly durable . In addition, a simple structure having only a bent portion in the connecting arm is sufficient, which is advantageous in terms of economy and the like.

[0009]

[0010]

[0011]

[0012]

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

[0014] In the configuration according to the first aspect of the present invention, the pre-processing unit 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 a lateral direction of the body. Lateral sliding of the raising device and the mowing device with respect to the traveling vehicle is enabled.

[ Operation ] Pre-processing unit frame supporting the raising device and the mowing device
The upper part is divided into a distal part supporting the device and the mowing device, and a proximal part connected to the support of the traveling body, so that the distal part can be slid with respect to the proximal part. by also, it can be caused by device and mowing transverse slide device into the rotary mowing position and the middle split working position, in this case, the slide portion preprocessing unit frame
And the front end of the pre-processing unit frame is heavy due to the slide structure, and troubles such as muddy water jumping from the field and entering the slide unit are likely to occur. On the other hand, since the pre-processing unit frame slides between the support unit of the traveling body and the sliding part, which becomes a heavy object, is positioned on the traveling body side, and
The raising device and the mowing device can be horizontally slid while the slide portion is positioned at a high level so that muddy water does not easily enter.

[Effect] The front and rear weights of the entire combine can be well balanced by positioning the slide portion on the traveling body side, and
Muddy water or the like enters the slide portion, and failures and slide defects are unlikely to occur, so that the slide portion can be used satisfactorily for a long time.

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

[Structure] In the structure of the invention according to claim 1 or 2, the second shaft center is set to an inclined shaft center 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 feeds the culm to the threshing feed chain. And the intermediate work position, it also swings in the lateral direction of the body around the second axis of the inclined posture, thereby maintaining the inclined posture in which grain culms can be easily supplied to the threshing feed chain. To supply stalks.

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

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

[Configuration] In the configuration 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 connected from the traveling machine body side of the preprocessing unit frame. It is configured to be supported by a transmission frame portion that extends and is connected to the upper end side of the raising device, and that the operating arm suspends and supports the grain culm transport device via the interlocking link.

[Operation] Since the operation arm and the electric motor are supported by the transmission frame portion, the operation arm and the motor are positioned at a high level so as to be hardly adhered even if mud jumps up from a field scene. The culm conveying device can be moved up and down.

[Effect] Even in the case of a wetland, it is possible to easily avoid the occurrence of failure or malfunction due to mud adhering to the operation arm or the electric motor and to accurately and surely handle the harvested grain culm while adjusting the handling depth. Can work.

[0025]

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 standing on a body frame 7 of the traveling body, and a bearing holder 9 supported by the other column 8. A transmission shaft 10 having the first shaft center X is rotatably mounted . A transmission shaft portion located between the two bearing holders 9, 9 of the transmission shaft 10 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. Cutting main frame 21 and a plurality of weeding rods 22 extending forward from the tip of the cutting main frame 21 and arranged in parallel in the lateral direction of the body.
A first raised transmission case 23 as a transmission frame portion extending forward from the transmission case portion at one end of the base end portion 21a of the mowing main frame 21;
A vertical transmission case 24 whose upper end is connected to the distal end of the first raised transmission case 23; and a vehicle body which is connected across the lower end of the transmission case 24 and the distal end of the cutting main frame 21. A pre-processing unit frame 27 of the pre-processing unit 20 is formed by a vertical cutting blade transmission case 25 and a second raising transmission case 26 erected on one side of the front end of the cutting main frame 21. It is formed. A plurality of side weeding tools 28a for weeding the planted grain culm into a culm to be cut and a non-cutting culm and introducing the culm to be cut into the raising path between the weeding rods 22 are provided. A center that is fixed to the distal end of the weeding rod 22 located on both lateral outer sides of the book weeding rod 22 and that weeds and introduces the culm to be cut into one and the other of a pair of left and right elevating paths. The weeding tool 28b is fixed to the distal end side of the weeding rod 22 located at the center of the plurality of weeding rods 22, and the culm to be cut from these weeding tools 28a and 28b is raised and moved. One of a pair of right and left raising devices 29, 29 raised and processed by a claw 29a is attached to the weeding rod 22 and the upper end side of the second raising transmission case 26, and the two raising devices 29, 29 are mounted. The other raising device 29 is connected to the weeding rod 22. Serial attached over the front side of the first caused by the transmission case 26, both Pick device 2
A clipper-type cutting device 30 for cutting and processing the root side of the planted grain culm on which the plants 9 and 29 act, and the harvested grain culm is gathered to the substantially central portion of the cutting device 30 in the lateral direction of the machine and the rear of the machine. A pair of left and right locking conveyance devices 3 to be sent to the side
1, 31 and a pair of left and right rotating bodies 3 for feeding the root side of the harvested grain culm from both locking and conveying devices 31, 31 to the rear side of the machine body.
2 and 32 are attached to the front end of the mowing main frame 21, and the locking and conveying device portion 33 a that acts on the tip side of the harvested grain culm from the locking and conveying device 31 and the rotating body 32, and the clamping that acts on the stock base side. The threshing feed chain of the threshing device 3 by changing the posture of the threshing device 3 by changing the posture of the threshing device 3 to a lying posture in which the hand is taken over by the transfer device portion 33b in a standing position, is held along the transfer guide plate 34, and is conveyed to the rear side of the device, and the tip end falls down to the inside of the device. The grain culm transport device 33 to be supplied to the transport start end of 3a is disposed between the rotating body 32 and the threshing hood chain 3a,
The pre-processing unit 20 is configured.

As shown in FIGS. 3 and 6, an elevating operation frame 36, which is positioned such that an operation portion 36a is in contact with a lower portion of a base end side of the cutting main frame 21, is attached to the pair of columns 8 by a mounting shaft portion 36b. , 8 are attached to each other, and the operation unit 36a and the body frame 7 are attached.
When the lift cylinder 37 attached is extended and retracted, the lifting operation frame 36 swings up and down with respect to the column 8 around the axis of the mounting shaft portion 36b due to the driving force of the lift cylinder 37, and is operated by the operating portion 36a. The cutting main frame 21 is configured to swing up and down with respect to the first support portion 10a. The slide feeder 38, which is positioned so that the base end side of the cutting main frame 21 is sandwiched between a pair of left and right pressing action portions 38a, 38a, is engaged with the feeder 38 so that a spiral ridge 39a feeds. An electric traverse motor 40, which is supported by the elevating operation frame 36 via a shaft 39 and an output unit 40 a is connected to the traverse shaft 39, is attached to the elevating operation frame 36. When the traverse motor 40 is driven, the traverse shaft 3
9 is configured to be driven in the forward rotation direction or the reverse rotation direction by the driving force of the transverse feed motor 40 to lock the slide operation tool 38 to the rotation preventing arm portion 38b of the operation tool 38, and to move the lifting / lowering operation frame The sliding operation tool 38 is moved in the lateral direction of the machine along the detent rod 41 attached to the 36, and the slide operation tool 38 slides the cutting main frame 21 along the first support portion 10a by the pressing action portion 38a. It is composed. Cutting main frame 21 is horizontal feed shaft 3
9, the operating portion 36 a of the elevating operation frame 36 can be brought into contact with the mowing main frame 21 to perform the elevating operation regardless of the stroke end on either the left side or the right side determined by the lateral feed stroke of the slide operation tool 38. The operation unit 36a is provided with a possible machine body lateral length.

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 outward of the fuselage from one of the bearing holders 9 of the transmission shaft 10, and as shown in FIGS. The connecting arm 43 is connected to a lower end side of an interlocking link 45 hanging down from an operation arm 44 supported by the first raising transmission case 23. The input case 42
Is connected to a transport device drive shaft 33e for driving the transporting endless rotation chains 33c and 33d of the locking transport device portion 33a and the nipping transport device portion 33b so as to be relatively rotatable. Reference numeral 33e includes a second shaft center Y that is inclined with respect to the shaft center X of the transmission shaft 10 as shown in FIG. As shown in FIG. 2, FIG. 3 and FIG. 5, a fixed side member 47a fixed to a support arm 46 located at the transfer start end side of the grain culm transfer device 33, and the fixed side member 47a is slidably supported. Movable side member 47b
Thus, a pre-processing unit frame that constitutes a telescopic connecting member 47 on the grain culm conveying device 33 side and that is formed of an arc-shaped guide rail that is long in the vertical direction of the machine body and passes through the connecting arm portion 47c of the movable side member 47b. 27 connecting member 48
The transmission case 24 of the pre-processing unit frame 27 is connected to the transfer device cover of one of the pair of locking transfer devices 31, 31, and the movable member 4
7b is configured to be able to slide along the connecting member 48. Thereby, the transport end side of the grain culm transport device 33 is moved by the input case 42 to the second support portion 10b which is the shaft end portion of the traveling machine body, and the first lateral center of the machine body which is the same axis as the axis X It can rotate around X, and
The transport device driving shaft 33e is rotatably connected around a second vertical axis Y, which is an inclined position that is located closer to the inner side of the fuselage at a higher level with respect to the fuselage at a higher level. The transfer start end side of the culm transfer device 33 is connected to the pre-processing unit frame 27 by connecting members 47 and 48 so as to be relatively slidable in the vertical direction of the machine body and integrally movable in the horizontal direction of the machine body. 44 is an interlocking link 45
Is supported by the suspension. Therefore, when the operation arm 44 is swung up and down, the whole grain culm transfer device 33 is swung with respect to the traveling machine body around the first axis X, and the transfer start end side moves up and down along the connecting member 48. Then, when the pre-processing unit frame 27 slides along the first support unit 10a, the entire grain culm conveying device 33 swings around the second axis Y with respect to the traveling machine body, and the conveyance start end side is in the machine body lateral direction. Go to 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 pre-processing unit 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. And weeding tools 28a, 2
8b, the raising device 29, the mowing device 30, the locking and conveying device 31, and the rotating body 32 can be slid in the lateral direction with respect to the traveling machine body. The grain conveying device 33 can be swung with respect to the traveling machine body around the second axis Y so as to be located at a predetermined cutting grain stem receiving point behind the stationary conveying device 31 and the rotating body 32. Then, as shown in FIG. 7, when the preprocessing unit 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 unit 10a, the weeding tools 28a and 28b, the raising device 2
9 and the reaping device 30 are brought to a re-cutting work position shifted to the side opposite to the driving unit side of the traveling body, and as shown in FIG. 8, the pre-processing unit frame 27 is slid to the stroke end on the right side of the body. When mounted on the right side of the first support portion 10a, the weeding tools 28a, 28b, the raising device 29, and the cutting device 30 move the operating unit 2 from the re-cutting work position.
It is configured so that it becomes the middle split work position closer to. When the weeding tools 28a, 28b, the raising device 29, and the cutting device 30 are set at any of the re-cutting position and the middle splitting position, the lift cylinder 37 is operated to allow the pre-processing portion frame 27 and the The culm conveying device 33 can be pivoted up and down around the axis X with respect to the traveling machine body, and the pre-processing unit 20 is lowered so that the weeding tools 28a and 28b, the raising device 29 and the mowing device 30 are located near the ground. Working position, weeding tools 28a, 28b, raising device 2
9 and the reaper 30 are switched to a raised, non-working position, which is 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 attached to the first elevating transmission case 23. It is supported. A fan-shaped operation gear 50 is rotatably provided integrally with a mounting cylinder portion 44a of the operation arm 44 which is fitted on the support shaft 49, and an output gear 51 is attached to the operation gear 50.
A first depth adjusting motor 51, which is an electric motor configured to be driven at a constant rotation speed so that the gears a mesh with each other and there is no change in output, is attached to the transmission case 23 by first raising via a motor support member 52. , 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. This handling depth adjustment can be performed by operating the handling depth adjustment motor 51.

As shown in FIG. 2 and FIG. 3, FIG. 5 shows the locking and conveying device portion 33a and the nipping and conveying device portion 33b.
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 that contact the grain culm at the tip side 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 the intermediate work is performed, the pre-processing unit
The frame 27 is slid laterally to the driving unit side by the lateral feed motor 40 and attached to the right end side of the first support unit 10a,
Weeding tools 28a, 28b, raising device 29, mowing device 3
Set 0 to the above-mentioned intermediate work position. Then, as shown in FIG. 8, the crawler traveling device 1 is positioned at a position as far 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 culm a, and the non-cutting Work can be performed while easily avoiding stepping down the target grain culm b by the traveling device 1. And when performing the re-cutting work, the pre-processing
The section frame 27 is laterally slid to the side opposite to the operation section side by the lateral feed motor 40 and attached to the left side of the first support section 10b, and the weeding tools 28a, 28b, the raising device 29, and the cutting device 30 are re-cut. Move to working position. Then, as shown in FIG. 7, the crawler traveling device 1 is positioned at a position as far away as possible from the non-cutting target grain culm b toward the mowing target grain culm a, and the crawler traveling of the non-cutting non-cutting target grain culm b is performed. Work can be performed while easily avoiding stepping down by the device 1 or muddying of the uncut kernels b by the crawler traveling device 1. 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. In addition, W shown in FIG. 7 is a stroke for sliding the cutting main frame 21 to switch the grain stem raising device 29 and the cutting device 30 between the re-cutting work position and the middle splitting work position, and LE is the aforementioned stroke. This is a linear distance from the connection point between the lift connection arm 43 and the interlocking link 45 to the second axis Y.

The grain culm conveying device 33 is constructed as shown in FIGS. 2, 5 and 9. That is, as shown in FIG. 9, a main frame 33f made of a round pipe having a support shaft 33k and the support arm 46 at one end side, a sheet metal chain guide frame 33m connected to the main frame 33f, This chain guide frame 33m
The frame F of the grain culm transport device 33 is formed by a transport guide support frame 33j made of a round pipe connected to one end of the frame and a locked transport support frame 33n erected at an intermediate portion of the main frame 33f. I have. The chain sprocket supported by the support shaft 33k and the chain guide frame 33m support the endless rotating chain 33d of the nipping and transporting device portion 33b, and the locking and transporting device portion is mounted on the transport guide supporting frame 33j. 3
3a and the transport guide rails 33g and 33h of the sandwiching transport device portion 33b are supported, and the main body of the locked transport device portion 33a is supported by the locked transport support frame 33n.

As clearly shown in FIGS. 5 and 9, the link connecting arm 43 is used to transfer the cereal culm of the cereal culm conveying device 33 from a portion of the main frame 33f located near the locking and conveying support frame 33n. Base arm portion 43a extending in a direction intersecting the direction, and a transfer start end of the cereal culm transfer device 33 in a direction along the cereal culm transfer direction of the cereal culm transfer device 33 from the distal end side of the base arm portion 43a. A bent arm extending from the frame F and having a bent portion 43c on the extended end side is formed by forming the distal end arm portion 43b extending toward the side. Then, by connecting the interlocking link 45 to a connecting portion provided with a connecting hole 43d of the distal end side arm portion 43b located closer to the extension end side than the bent portion 43c, the operation arm 44 is connected.
It is made to be linked to. As a result, even if vibrations occur in the grain culm transport device 33, the link connecting arm 43 is easily elastically deformed at the bent portion 43c, and the vibration is generated by the interlocking link 45.
Buffer so as not to be easily transmitted to the operation arm 44. In particular, when vibration occurs in which the transport start end side swings up and down around the first axis X in the cereal culm transport device 33, particularly from the direction in which the distal end arm portion 43b is bent relative to the proximal end arm portion 43a. Effectively elastically deforms to reduce vibration transmission.

[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 pre-processing unit frame mounting unit.

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

FIG. 6 is a plan view of a pre-processing unit elevating 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 diagram of a frame structure of the grain culm conveying device.

[Explanation of symbols]

Reference Signs List 3 threshing device 3a threshing feed chain 10a support portion 23 transmission frame portion 27 pretreatment portion frame 29 elevating device 30 mowing device 33 grain culm transport device 43 connecting arm 43a base end arm portion 43b distal end arm portion 43c bending portion 44 Operation arm 45 Interlocking link 51 Electric motor F frame X 1st axis Y 2nd axis

────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-5-153384 (JP, A) JP-A-7-213142 (JP, A) JP-A-5-37030 (JP, U) (58) Field (Int. Cl. ⁷ , DB name) A01D 34/00-67/00

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 the feeder to the threshing feed chain is connected to the traveling machine body so as to be rotatable around a first axis centered on the machine body side and a second axis centered on the machine body up and down. Pretreatment frame supporting device
An operating arm , which is vertically swingably driven by the system, swings the transport start end side of the grain culm transport device up and down around the first shaft center through an interlocking link to handle the depth in the threshing device. The pretreatment unit structure of the combine that is configured to perform the adjustment, the connecting arm extending from the frame of the grain culm transport device and having a bent portion on the extension end side to the grain culm transport device. provided, the distal arm portion located on the extending end side of the bent portion of the connecting arm with some coupled to the interlocking links, the bent base end side than the portion of said connecting arm position
The proximal arm portion that moves from the frame transfers the cereal stem
Extend in the direction that intersects the grain conveying direction of the device, and
The distal arm portion of the arm is the proximal arm portion
Extends in the direction along the grain stem transport direction of the grain stem transport device from
Pre-processing unit structure of the combine you are. 2. The apparatus according to claim 1, wherein said pre-processing unit frame supporting said raising device and said mowing device is slidably connected to a supporting portion of said traveling vehicle body in a lateral direction of the vehicle body. The pre-processing unit structure of a combine according to claim 1 , wherein a horizontal slide is enabled. The method according to claim 3, wherein the second axial center, is set to tilting axis located inboard airframe front side the higher level side according
Item 3. The pre-processing unit structure of the combine according to item 1 or 2 . And wherein said operating arm, and an electric motor for driving the operating arm, the transmission frame portion connecting extending the upper end side of the Pick apparatus from traveling machine body side of the pretreatment unit frame The pre-processing unit structure of a combine according to any one of claims 1 to 3 , wherein the operating arm is configured to suspend and support the grain culm conveying device via the interlocking link. .