JP2014217330A - Combine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inexpensively obtain a combine which makes a threshing feed chain automatically stop by elevating a reaping part to a prescribe height or higher.SOLUTION: A combine comprises a feed chain clutch 70 which can be switched to a power-on state that power is transmitted to a threshing feed chain FC, and a power-off state that the transmission of the power to the threshing feed chain FC is cut. The combine also comprises a link mechanism K1 which makes a reaping part B interlock with the feed chain clutch 70. When the reaping part B is elevated to a prescribed height or higher, the link mechanism K1 switches the feed chain clutch 70 to the power-off state.

Description

  The present invention relates to a combine equipped with a harvester connected to a front part of a traveling machine body so as to be movable up and down, and a threshing apparatus having a threshing feed chain for conveying a harvested cereal from the harvester.

  Conventionally, there has been a combine described in Patent Document 1, for example. The combine includes a limit switch that detects that the cutting unit has been lifted above the set position, and an electric cylinder that performs transmission cut-off operation on the feed chain clutch, and when the lifting operation of the cutting unit is detected by the limit switch. The electric cylinder is actuated by an operation signal from the control device, the feed chain clutch is operated to cut off the transmission, and the feed chain is stopped.

JP 7-46930 A

  The above-described conventional technique not only requires a special actuator for switching the feed chain clutch, but also requires a special power source for operating the actuator, resulting in high costs.

  An object of the present invention is to provide a combine that can be obtained at low cost while the threshing feed chain is automatically stopped only by raising the mowing unit.

The combine according to the present invention is:
A cutting part connected to the front part of the traveling machine body so as to be movable up and down;
A threshing device having a threshing feed chain for conveying the harvested cereal meal from the harvesting unit;
A feed chain clutch that is switchable between an entering state that is transmitted to the threshing feed chain and a state in which transmission to the threshing feed chain is cut off;
A link mechanism that links the mowing unit and the feed chain clutch,
The link mechanism switches the feed chain clutch to the disengaged state when the cutting unit is raised above a predetermined height.

  According to this configuration, when the mowing part is raised above a predetermined height, the link mechanism switches the feed chain clutch to the disengaged state.

  In other words, with this configuration, the feed chain clutch can be switched directly by the lifting operation of the cutting part, and a special actuator for operating the feed chain clutch and a special power source for operating the actuator. Is not necessary.

  Therefore, according to the present invention, by appropriately setting the predetermined height of the cutting unit, when the cutting operation is finished, the combiner that automatically stops the threshing feed chain only by raising the cutting unit is provided with a special actuator. And can be obtained inexpensively without the need for a power source.

  In the present invention, it is preferable that the feed chain clutch is switched to the engaged state when the cutting portion is lowered to the predetermined height or less.

  According to this configuration, the feed chain clutch is switched to the engaged state only by lowering the cutting portion below a predetermined height.

  Therefore, according to the present invention, by appropriately setting the predetermined height of the cutting part, when the turning travel is finished, the threshing feed chain is automatically driven and operated simply by lowering the cutting part. Can start.

  In the present invention, the reaping portion includes a reaping portion frame extending from the traveling machine body so as to be swingable up and down, and an oscillating body swinging integrally with the reaping portion frame, and the reaping portion is raised above the predetermined height. In this case, it is preferable that the link mechanism and the rocking body are connected, and the link mechanism is operated by the ascending operation of the rocking body to switch the feed chain clutch to the disengaged state.

  According to this configuration, since the feed chain clutch is in a disengaged state only after the link mechanism and the swinging body are connected, the link mechanism is immediately connected when the cutting unit frame and the link mechanism are simply connected and the cutting unit is raised. Unlike the case where is operated, the timing at which the feed chain clutch is operated in the disengaged state can be adjusted. Further, the oscillating body can be used as a mediating member between the reaping portion frame and the link mechanism, and the reaping portion frame and the link mechanism can be interlocked.

  Therefore, according to the present invention, the structure of the link mechanism can be easily obtained, and the cost can be reduced from this aspect.

  In the present invention, when the cutting part is lowered below the predetermined height, the link mechanism and the swinging body are disconnected, and the link mechanism switches the feed chain clutch to the engaged state by a restoring force. It is preferable to be configured to operate.

  According to this configuration, when the cutting part is lowered below a predetermined height, the feed chain clutch is switched to the engaged state by the restoring force of the link mechanism, so the special actuator for switching the feed chain clutch to the engaged state Further, without providing a special control means for controlling the actuator, the threshing feed chain can be automatically driven only by lowering the cutting part.

  Therefore, according to this invention, the combine which can drive a threshing feed chain automatically and can start an operation | work can be obtained cheaply by the simple operation structure which lowers a cutting part.

  In the present invention, the link mechanism includes a movable portion that is swingably supported by a support portion provided in the traveling machine body, and an operation cable that interlocks the movable portion and the feed chain clutch. It is preferable that the movable portion is configured to engage with the rocking body and operate the operation cable in response to the ascending force of the rocking body when the cutting unit is raised above the predetermined height.

  According to this configuration, the link mechanism and the rocking body can be connected with a simple structure in which the movable portion and the rocking body are engaged. In addition, the operation cable connects the movable part and the feed chain clutch, so it is easy to wire, and even when the transmission path for transmitting the operating force from the movable part to the feed chain clutch is long or a complicated transmission path is required. The operating force can be transmitted to the feed chain clutch by a simple structure.

  Therefore, according to the present invention, the lifting force of the cutting part can be transmitted to the feed chain clutch as an operating force, but can be transmitted with a simple structure, and this aspect can also be inexpensive.

  In the present invention, it is preferable that the movable portion is configured to operate the operation cable by releasing the engagement with the swinging body by a restoring force when the reaping portion is lowered below the predetermined height. .

  According to this configuration, the operation in which the cutting part is lowered below the predetermined height is converted into an operation in which the movable part is disengaged from the oscillating body, and this operation is transmitted to the feed chain clutch by the operation cable. Since the clutch is switched to the engaged state, even if the transmission path for transmitting the operation of the movable portion to the feed chain clutch is long or the transmission path has a complicated shape, the operation cable is easy to wire.

  Therefore, it is possible to obtain a combine in which the threshing feed chain is driven simply by lowering the cutting part without requiring a special actuator or the like, and at a low cost regardless of the length or shape of the transmission path. it can.

  In the present invention, the oscillating body is provided with a connecting portion for engaging the movable portion with the oscillating body, and a guide portion for guiding the movable portion to the connecting portion, and the cutting portion is lowered to the predetermined height or less. In this case, it is preferable that the movable portion is positioned on the guide portion, and the movable portion is engaged with the connecting portion when the mowing portion is raised above the predetermined height.

  According to this configuration, when the cutting part is raised above a predetermined height, the movable part is guided by the guide part and moved to the connecting part to engage with it. Switching to the state can be performed with high accuracy.

  Therefore, according to the present invention, the threshing feed chain can be stopped only by raising the mowing part without using a special actuator, and the threshing feed chain can be stopped accurately with the raising of the mowing part. Can be done.

  In the present invention, there is provided a reaping link mechanism that includes a reaping clutch that can be switched between an on-state transmitting to the reaping portion and a cut-off state that interrupts transmission to the reaping portion, and that links the reaping portion and the reaping clutch. The reaping link mechanism is configured to switch the reaping clutch to the disengaged state when the reaping portion is raised above a predetermined height for reaping, and the reaping portion is less than or equal to the predetermined height for reaping. When lowered, the reaping clutch is preferably switched to the engaged state.

  According to this configuration, when the mowing unit is raised above a predetermined height, the mowing link mechanism switches the mowing clutch to the disengaged state, and when the mowing unit is lowered below the predetermined height, the mowing link mechanism is moved to the mowing clutch. Switch to the on state.

  In other words, with this configuration, the cutting clutch can be switched by the lifting and lowering operations of the cutting unit, and a special actuator for operating the cutting clutch and a special power source for operating the actuator. Is not necessary.

  Therefore, according to the present invention, by appropriately setting the predetermined height of the cutting part, when the cutting and traveling are finished, it is easy to operate by simply raising the cutting part and turning while stopping the cutting part. When the traveling is finished, the cutting unit can be driven and the operation can be started simply by lowering the cutting unit. It can be obtained at low cost without requiring a special actuator or power source for switching the mowing clutch.

  In the present invention, it is preferable that the link mechanism and the cutting link mechanism are configured to include a common link mechanism structure.

  According to this configuration, the link mechanism and the cutting link mechanism can be obtained in a state where the number of parts is reduced by sharing the link mechanism structure.

  Therefore, according to the present invention, it is possible to inexpensively obtain a combine that drives and stops the threshing feed chain and the reaping part simply by raising and lowering the reaping part.

  In the present invention, it is preferable that the predetermined height at which the feed chain clutch is switched to the disengaged state is set higher than the predetermined height for cutting at which the harvesting clutch is switched to the disengaged state.

  According to this configuration, when the mowing part is raised and exceeds the predetermined height for mowing, the mowing clutch is switched to the disengaged state to stop the mowing part, and then the mowing part is further raised to reach the predetermined height. Is exceeded, the feed chain clutch is switched to the disengaged state and the threshing feed chain is stopped. Therefore, even if the raised reaping part exceeds the predetermined height for reaping and the reaping part stops, the threshing feed chain continues to be driven until the reaping part exceeds the predetermined height.

  Therefore, according to the present invention, for example, it is advantageous in that the threshing feed chain can be stopped after the threshing of the harvested cereal rice cake remaining in the threshing apparatus is completed even if the cutting unit is stopped.

It is a side view which shows the whole combine. It is a top view which shows the whole combine. It is a side view which shows a cutting part. It is a top view which shows the site | part of the cutting part in which a case cover is located. It is a vertical side view which shows a case cover. It is a perspective view which shows a case cover. It is a top view which shows a supply conveyance apparatus. It is a top view which shows the auxiliary conveyance apparatus of the conveyance state corresponding to a normal grain candy. It is a top view which shows the auxiliary conveyance apparatus of the conveyance state corresponding to a special grain candy. It is a longitudinal cross-sectional view which shows the support structure of a clamping rail. It is a side view which shows a guide rod. It is a diagram which shows a transmission structure. It is sectional drawing which shows a transmission gear case. It is sectional drawing which shows a transmission gear case. It is a side view showing a link mechanism and a cutting link mechanism in a state where a cutting clutch lever is operated to a cutting position and a cutting part is lowered below a predetermined height. It is a side view which shows a link mechanism and a cutting link mechanism in the state by which the cutting clutch lever was operated to the entering position, and the cutting part was lowered below a predetermined height. It is a side view showing a link mechanism and a cutting link mechanism in a state where the cutting clutch lever is operated to the entering position and the cutting unit is raised above a predetermined height. It is a side view which shows a link mechanism.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a side view showing an entire combine according to an embodiment of the present invention. FIG. 2 is a plan view showing the entire combine according to the embodiment of the present invention. As shown in FIGS. 1 and 2, the combine according to the embodiment of the present invention is configured to travel by a pair of left and right crawler traveling devices 1, 1, and has a driving unit C provided at the front of the fuselage. The machine body A, the cutting part B connected to the front part of the traveling machine body A by the lifting cylinder 2 so as to be lifted and lowered by the lifting and lowering operation state, and the driving part C of the traveling machine body A are provided. A threshing device D and a grain tank E.

This combine performs the harvesting work of rice, wheat, etc. by moving the traveling machine body A forward while driving the cutting part B in the descending work state and driving the threshing device D.
That is, the cutting part B cuts the roots of the planted cereals such as rice and wheat, cuts the cereals, and supplies the cereals to the threshing feed chain FC provided in the threshing device D. The threshing device D feeds the tip side of the harvested cereal cocoon to the handling chamber 9a by holding the stocker side of the chopped cereal meal by the threshing feed chain FC and transporting it backward in the traveling machine body. The threshing process is performed by 9, and the threshing processed material is sorted into threshing grains and dust in the sorting unit S. The grain tank E collects and stores the thresh grains that are unloaded from the threshing apparatus D and supplied by the threshing apparatus 15. The threshed grains stored in the grain tank E are a vertical screw conveyor 16 provided at the rear of the grain tank E in the vertical direction of the traveling machine body, and a horizontal screw connected to the upper end of the vertical screw conveyor 16 so as to be swingable up and down. It is configured to be carried out from the grain tank E by the screw conveyor 17. The threshing waste straw from the threshing device D is shredded by the shredding device 12 provided at the rear of the threshing device D and released to the field.

The reaping part B will be described.
The cutting part B includes a cutting part frame 81 that extends forward from the front part of the traveling machine body A and that can swing up and down around the swing axis X. By being swung up and down, it is moved up and down between a lowered working state and a raised non-working state.

  As shown in FIGS. 1, 3, and 4, the reaping portion frame 81 extends from the reaping support portion 96 provided at the front portion of the body frame AF so as to swing up and down around the swing axis X toward the front of the traveling body. A main frame 82 composed of the extended transmission case, a cutting blade drive case 83 (see FIG. 1) that is connected to the extending end of the main frame 82, and a horizontal direction of the traveling machine in front of the cutting blade drive case 83. Are arranged side by side and are provided with six weeding shears 5a (see FIG. 7) supported by the cutting blade drive case 83. A weeding tool 5 is supported at the front end of each weed tub 5a.

  As shown in FIGS. 3 and 4, the case cover 20 is provided above the central portion of the cutting blade drive case 83 in the lateral direction of the traveling machine body. The case cover 20 is disposed below the conveyance path of a main conveyance device 23A (see FIG. 7) described later. More specifically, the case cover 20 is disposed below a portion where the conveyance path of the main conveyance device 23A and the conveyance paths of the inner merging and conveying device 26 (see FIG. 7) and the outer merging and conveying device 27 (see FIG. 7) merge. It is. The case cover 20 is supported on the cutting blade drive case 83 in a forward and downward inclined posture that becomes lower toward the front side of the traveling machine body. Therefore, the case cover 20 removes straws and grass that have fallen from a portion where the harvested cereals conveyed by the main conveyance device 23A and the harvested cereals conveyed by the inner merging and conveying device 26 and the outer merging and conveying device 27 merge. The cutting blade drive case 83 is dropped onto the ground from the front side of the cutting blade drive case 83, that is, between the support frame 86 and the cutting blade drive case 83 that support the rear end portion of the weed ridge 5a. That is, the case cover 20 prevents straw scraps and the like from falling and accumulating on the cutting blade drive case 83 and the main frame 82.

  The case cover 20 is supported by the mounting blade 21 on the cutting blade drive case 83 at two locations in the lateral direction of the machine body. As shown in FIGS. 5 and 6, each mounting bracket 21 includes a fixed band portion 21 a fixed at one end side to the back side of the case cover 20, a detachable band portion 21 b detachable at one end side from the case cover 20, and a fixed band. A fastening bolt 21c that connects the part 21a and the detachable band part 21b and fastens and fixes them to the cutting blade drive case 83 is formed. Therefore, the mounting bracket 21 enables the case cover 20 to be retrofitted with respect to the cutting blade drive case 83 that does not include the case cover 20.

  As shown in FIGS. 2 and 3, the cutting part B is configured to be able to cut five lines. In the cutting part B, there are six weeding tools 5 provided at the front end of the cutting part B with a predetermined interval in the lateral direction of the traveling machine, and planted cereals from each of a pair of adjacent weeding tools 5 and 5. , A clipper type reaping device 7 for cutting the stock of the planted cereal that is caused and processed by the five motive devices 6, and a threshing feed for the reaping cereal from the reaping device 7. And a supply conveyance device 23 for supplying the chain FC.

The supply conveyance device 23 will be described.
As shown in FIGS. 3 and 7, an endless rotating belt 24 is provided at the rear of each of the five pulling devices 6 to feed and feed the stock of the cereal mash into the reaping device 7 with a picking claw. A scraping rotary body 25 that feeds the stock of the harvested cereal grains backward from the harvesting device 7 is provided below the rotation end of each of the rotation belts 24 so as to be integrally rotatable with the endless rotation belt 24.

  As shown in FIG. 7, the supply / conveyance device 23 extends over the upper part of the two feeding rotary bodies 25 on the right end side of the traveling machine body among the five feeding rotary bodies 25 and the vicinity of the conveyance start end portion of the threshing feed chain FC. A main conveyance device 23A provided, an inner merging conveyance device 26 provided over one of the five conveyance rotators 25 inside the one conveyance rotator 25 and halfway along the conveyance path of the main conveyance device 23A, Outer merging and conveying device 27 provided over two of the five agitating rotators 25 on the left end side of the traveling machine body and on the middle of the conveying path of the main conveying device 23A. It is.

  The main conveying device 23A conveys the stocked side of the harvested cereal grains from the two scraping rotary bodies 25 on the right end side of the traveling machine body by the endless rotating chain so as to be nipped and conveyed to the rear side of the traveling machine body and to the left side of the traveling machine body. Stock end clamping and conveying device 28 on the starting end side, and conveyance end for holding and conveying the stock side of the harvested cereal rice bran by the endless rotating chain from the stock end holding and conveying device 28 toward the rear side of the traveling machine body and to the left side of the traveling machine body Side stockholder clamping transport device 29, auxiliary transport device 31 provided across the transport end portion of stockstock pinching transport device 29 and the transport start end portion of threshing feed chain FC, and two scraping rotations on the right end side of the traveling machine body A tip end side locking and conveying device 30 that locks and conveys the tip side of the harvested cereal meal from the body 25 to the vicinity of the conveyance start end of the threshing feed chain FC by an endless rotation chain.

  The inner merging / conveying device 26 conveys the harvested cereals from one inner rotating rotator 25 to the middle of the conveying path of the main conveying device 23A by nipping and conveying on the stock side by an endless rotating chain. It merges with the harvested cereal meal carried by the device 23A.

  The outer merging / conveying device 27 holds the harvested cereal from the two scraping rotators 25 on the left end side of the traveling machine body on the stock side by the endless rotating chain 27a and the tip side engagement by the endless rotating chain 27b. By stopping and transporting, it is transported in the middle of the transport path of the main transport device 23A, and is merged with the harvested cereal straw transported by the main transport device 23A.

  The stock holding and conveying device 29 on the conveyance end side is supported so as to be swingable up and down around a horizontal axis Y (refer to FIG. 1) that faces the traveling machine body provided on the conveyance start end side, and is an actuator such as an electric motor or a hydraulic cylinder. Is adjusted to swing up and down to adjust the handling depth in the threshing device D.

  In other words, the stock holding and conveying device 29 on the conveyance end side is adjusted by swinging up and down around the horizontal axis Y, so that the auxiliary stock device 31 of the harvested cereal handed over to the auxiliary transport device 31 Change the clamping position in the slimming direction. Thereby, the holding position of the stock source side by the threshing feed chain FC of the harvested cereal rice cake that the auxiliary conveying device 31 delivers to the threshing feed chain FC changes in the slimming direction, and the tip of the harvested cereal rice cake inserted into the handling chamber 9a Side length changes.

  The actuator for swinging up and down the stock holding and conveying device 29 at the conveyance end side is automatically operated by a handling depth control means that operates based on the detection result of the culm length sensor that detects the slimming length of the harvested cereal culm. It is configured to be. Therefore, the stock holding and conveying device 29 on the conveyance end side is automatically swung and adjusted so that the handling depth in the threshing device D becomes the set depth regardless of the change in the slimming length of the harvested cereal meal. The

  As shown in FIG. 7, the auxiliary transport device 31 receives the stock side of the harvested cereal mash from the stock source clamping transport device 29 on the transport end side, and passes the stock side of the passed cereal cereal to the endless rotating chain. It is configured to be nipped and conveyed by 32 and delivered to the conveyance start end of the threshing feed chain FC. The auxiliary conveying device 31 is a special corn that is different from a normal cereal such that the harvested cereal has a significantly short slimming length or a wide granulation range. In the case where insufficient adjustment occurs in the handling depth adjustment by the swing adjustment, it is possible to compensate for the insufficient adjustment. In detail, the auxiliary conveyance device 31 is configured as follows.

  As shown in FIGS. 8 and 9, the auxiliary conveyance device 31 includes a drive sprocket 35 that is supported by a drive case 34 connected to a base portion 82 a (see FIG. 15) of the main frame 82, and the drive sprocket 35. A driven sprocket 36 on the conveyance start end side positioned further forward, a driven sprocket 37 on the conveyance end side located on the left side of the drive sprocket 35, and the drive sprocket 35, the driven sprocket 36, and the driven sprocket 37 are stretched. An endless rotating chain 32 and a chain guide that supports the endless rotating chain 32 and sets a nipping and conveying path of the endless rotating chain 32 at a portion from the driven sprocket 36 to the driven sprocket 37 in the endless rotating chain 32. 38 and the endless rotating chain 32 in the nipping and conveying path Provided, it is constituted comprising a clamping rail 39 to allow the holding of a strain base side of the culms reaper by endless rotating chain 32, the. The driven sprocket 36 on the conveyance start end side is a tension sprocket that is urged by a tension spring 36 a to apply tension to the endless rotating chain 32.

  The sandwiching rail 39 is pivotally supported at each of the ends of the pair of support rods 42 and 43 supported by the support case 41. The support case 41 is supported by a curved support frame 40 that bypasses the nipping conveyance path. As shown in FIGS. 8 and 10, the pair of support rods 42 and 43 are supported by the support case 41 so as to be retractable. The support bars 42 and 43 are slid and biased by the elastic restoring force of springs 42 b and 43 b provided inside the support case 41, and the clamping rail 39 is moved and biased toward the endless rotating chain 32. At portions located inside the support case 41 of the support rods 42 and 43, flange portions 42a and 43a for preventing the support rods 42 and 43 from being detached are provided. One end side of each spring 42b, 43b is received and supported by the flanges 42a, 43a.

  As shown in FIG. 10, the mounting hole position a of the stop pin for restricting the position of the flanges 42a and 43a with respect to the support bar 42 and the support bar 43 can be changed in the axial direction. In other words, by changing the attachment hole position a of the stop pin, the relative position between the holding rail 39 and the holding conveyance path of the endless rotating chain 32 regardless of the left and right position change on the conveying end side of the endless rotating chain 32. Can be made almost the same.

  As shown in FIGS. 8 and 11, a guide rod 44 is extended from the lower surface side of the chain guide 38 toward the threshing feed chain FC. The guide basket 44 lifts and guides the stocker side of the harvested grain basket delivered from the auxiliary transport device 31 to the threshing feed chain FC toward the threshing feed chain FC. A plurality of bolt holes 45 a and 45 a for connecting bolts 45 that fasten and fix the guide rod 44 to the chain guide 38 are provided side by side in the chain guide 38 in the left-right direction. The guide rod 44 is adjusted to swing with respect to the chain guide 38 with the connecting bolt 46 connecting the base end portion of the guide rod 44 and the chain guide 38 as a swing fulcrum, and is selected from a plurality of bolt holes 45a. By attaching the connecting bolt 45 to the bolt hole 45a, the relative position of the rear end side of the guide rod 44 with respect to the threshing feed chain FC is the same or substantially the same regardless of the left-right position change on the conveyance end side of the endless rotating chain 32. It can be done. The connecting bolt 46 is mounted over the chain guide 38, the mounting plate 44a provided in the guide rod 44, and the fixed plate 47 fixed to the drive case 34 by the connecting bolt 47a. A bolt hole for the connecting bolt 46 provided in the chain guide 38 is formed in a long hole shape that enables the chain guide 38 to swing with respect to the fixing plate 47. A bolt hole for the connecting bolt 46 provided in the mounting plate 44 a has a considerably larger diameter than the outer diameter of the connecting bolt 46, and enables the chain guide 38 to swing with respect to the fixing plate 47.

  The chain guide 38 is swingably supported at the front end portion of the fixed plate 47 via a support shaft 48, and is configured to swing left and right around the axial center Z of the support shaft 48 in the vertical direction. A driven sprocket 37 on the conveyance end side is pivotally supported at the rear end of the chain guide 38. A rear end portion of the chain guide 38 is provided with a cereal guide plate 49 for guiding the slime of the cereal that is transported by nipping and transporting by the endless rotating chain 32 and by the latching and transporting by the tip side locking and transporting device 30. Is supported.

  The chain guide 38 is configured to be fastened and fixed to the fixing plate 47 by positioning bolts 50. Two bolt holes 50a, 50b for the positioning bolt 50 are provided in the chain guide 38 at a predetermined interval in the left-right direction.

  The auxiliary conveyance device 31 selects one bolt hole 50a or bolt hole 50b from the two bolt holes 50a and 50b, and attaches the positioning bolt 50 to the selected bolt hole 50a or bolt hole 50b and the fixing plate 47. , It is configured to switch between a transport state corresponding to a special corn straw and a transport state corresponding to a normal corn straw.

  FIG. 8 is a plan view showing the auxiliary transport device 31 in a transport state corresponding to an ordinary grain candy. As shown in FIG. 8, the auxiliary transport device 31 swings and adjusts the chain guide 38 around the axis Z, and one of the two bolt holes 50 a and 50 b is connected to the bolt hole of the fixing plate 47. And the positioning bolt 50 is attached to one of the bolt holes 50a and the bolt hole of the fixing plate 47, so that a conveying state corresponding to an ordinary grain candy is obtained. When the auxiliary conveying device 31 is in a conveying state corresponding to an ordinary grain straw, the driven sprocket 37 on the conveying end side is located close to the threshing feed chain FC, and the conveying end of the pinching conveyance path by the endless rotating chain 32 The space | interval in the left-right direction of a traveling machine body of a threshing feed chain FC becomes narrow. Therefore, the auxiliary conveying device 31 narrows the interval between the holding part on the stocker side by the endless rotating chain 32 of the harvested cereal rice cake passed from the stocker holding and conveying device 29 on the conveying end side and the threshing feed chain FC. In the state, the harvested cereal rice cake is delivered to the threshing feed chain FC.

  FIG. 9 is a plan view showing the auxiliary transport device 31 in a transport state corresponding to a special cereal. As shown in FIG. 9, the auxiliary transport device 31 swings and adjusts the chain guide 38 around the axis Z, and the other bolt hole 50 b of the two bolt holes 50 a and 50 b is used as the bolt hole of the fixing plate 47. And the positioning bolt 50 is attached to the other bolt hole 50b and the bolt hole of the fixing plate 47, so that a conveying state corresponding to a special cereal is achieved. When the auxiliary conveyance device 31 is in a conveyance state corresponding to a special corn straw, the driven sprocket 37 on the conveyance end side is on the right side of the traveling machine body with respect to the threshing feed chain FC as compared with a conveyance state corresponding to a normal corn straw. Positioned away from each other, the distance in the lateral direction of the traveling machine body between the conveyance terminal portion of the nipping conveyance path by the endless rotation chain 32 and the threshing feed chain FC is widened. Therefore, the auxiliary conveyance device 31 sets the interval between the holding portion on the stock base side by the endless rotating chain 32 of the harvested cereal rice cake passed from the stock holding device 29 on the conveyance end side and the normal threshing feed chain FC. In a state where the interval is wider than that in the conveying state corresponding to the cereal, the chopped cereal is delivered to the threshing feed chain FC. That is, the auxiliary conveyance device 31 in the conveyance state corresponding to the special cereals conveys the stock side of the harvested cereals passed from the stock holding and conveying device 29 on the conveyance end side, corresponding to the normal cereals. The threshing feed chain FC is delivered to the threshing feed chain FC in a state of being moved to the handling room side with respect to the threshing feed chain FC than in the state.

  A transmission structure that enables driving of the harvesting part B and the threshing device D is configured as shown in FIG. That is, the driving force of the output shaft 3a of the engine 3 is transmitted to the input shaft 4a of the traveling mission case 4 via the transmission belt 3b. The driving force of the output shaft 4b for the cutting portion provided in the traveling mission case 4 is transmitted via the transmission belt 89 to the input shaft 81A of the cutting portion B provided in the base portion 82a of the main frame 82. is there.

  The driving force of the output shaft 3 a of the engine 3 is transmitted to a counter shaft 55 a provided on the counter case 55 via a transmission belt 56. The driving force of the counter shaft 55 a is configured to be transmitted to the handling cylinder 9 via the handling cylinder output shaft 55 b and the transmission belt 57. The driving force of the counter shaft 55a is configured to be transmitted to the Kara 11 of the sorting unit S via the transmission belt 58. The driving force of the counter shaft 55a is transmitted to the screw shaft of the No. 1 screw conveyor 13a of the sorting section S through the transmission belt 59, and the screw shaft of the No. 2 screw conveyor 13b and the vibration are transferred from this screw shaft through the transmission belt 60. It is configured to transmit to the input shaft 14 a of the movement sorting device 14 and the input shaft 65 a of the transmission gear case 65. The transmission gear case 65 is configured to transmit the input driving force to the dust exhaust fan 18 of the sorting unit S and the threshing feed chain FC. The driving force of the input shaft 65 a of the transmission gear case 65 is configured to be transmitted to the shredding device 12 via the transmission belt 61.

  The transmission gear case 65 is provided with a feed chain clutch 70 for switching the threshing feed chain FC between a driven state and a stopped state. The transmission gear case 65 is supported on the side wall of the machine body of the threshing apparatus D. Specifically, the feed chain clutch 70 is configured as shown in FIGS.

  The feed chain clutch 70 is rotatably supported by a transmission gear case 65, and a clutch ring body 72 and a transmission gear provided on an output shaft 65b that rotatably supports a drive sprocket 71 (see FIG. 12) of a threshing feed chain FC. 73, and a meshing clutch portion 74 provided across the clutch ring body 72 and the transmission gear 73. The clutch ring body 72 is engaged with a spline portion provided on the output shaft 65b so as to be integrally rotatable and slidable. The transmission gear 73 is supported on the output shaft 65b so as to be relatively rotatable. The transmission gear 73 is linked to an input gear 75 provided to be rotatable integrally with the input shaft 65a through a small-diameter relay gear 76, a large-diameter relay gear 77, and a dust fan drive gear 78.

  As shown in FIGS. 14 and 18, the feed chain clutch 70 is slidably supported by a support portion of the transmission gear case 65 and slidably supported outside the transmission gear case 65 via a support shaft 80 a. The operation unit 80 is provided, and is switched between the on state and the off state by the swinging operation of the operation unit 80.

  That is, when the operation unit 80 is swung around the support shaft 80a and operated to the cutting position [OFF] (see FIG. 18), the switching pin 79 is transmitted by the arm unit 80b of the operation unit 80 via the connecting pin 79a. A sliding operation is performed toward the inside of the gear case 65. Then, the tip of the switching pin 79 presses against the circular cam portion 72a of the clutch ring body 72, and the clutch ring body 72 is slid to the side away from the transmission gear 73 against the clutch spring 70a. The clutch pawls constituting the portion 74 are disengaged. Thereby, the feed chain clutch 70 will be in a cut | disconnected state, will stop transmission to the threshing feed chain FC, and will stop the threshing feed chain FC.

  When the operation unit 80 is swung around the support shaft 80a and operated to the entry position [on] (see FIG. 18), the switching pin 79 is moved by the arm portion 80b of the operation unit 80 via the connecting pin 79a to the transmission gear case 65. It is slid toward the outside of the. Then, the tip of the switching pin 79 releases the pressure on the cam portion 72a of the clutch ring body 72, the clutch ring body 72 is slid toward the transmission gear 73 by the clutch spring 70a, and the clutch of the meshing clutch portion 74 is engaged. The nail is engaged. As a result, the feed chain clutch 70 enters the engaged state, and is transmitted to the threshing feed chain FC to drive the threshing feed chain FC.

  The feed chain clutch 70 and the cutting part B can be linked by a link mechanism K1 shown in FIGS. The link mechanism K1 links the feed chain clutch 70 and the cutting part B by a mechanical mechanism, and when the cutting part B is raised above a predetermined height, the feed chain clutch 70 is switched to a disconnected state, and the cutting part B When it is lowered below a predetermined height, the feed chain clutch 70 is switched to the engaged state. When turning after finishing the mowing operation, a height that is slightly lower than the height set as the mowing portion B is raised is set as the predetermined height.

The link mechanism K1 will be described.
As shown in FIGS. 15 and 18, the link mechanism K <b> 1 includes a movable part M having an operating body T, and an operation cable W <b> 1 that links the movable part M and the feed chain clutch 70.

  The operation cable W1 is located on the left lateral outer side of the threshing device D from the position where the movable part M in front of the threshing device D is located, and reaches the feed chain clutch 70 through the inside of the side cover 10 (see FIG. 1). Is deployed. The side cover 10 covers the transmission system and the threshing feed chain FC located on the left lateral outer side of the threshing device D. The front end side of the inner cable 130 constituting the operation cable W1 is connected to the third intermediate arm 105C provided in the movable part M, and the rear end side is connected to the operation part 80 of the feed chain clutch 70 via the spring 132. It is. A return spring 70b is connected to the operation unit 80 to return the operation unit 80 to the input position [ON]. The front end side of the outer cable 131 that constitutes the operation cable W1 is supported on the outer stay 133 that is disposed on the laterally outer side of the side plate 103A in the operation unit C and is connected to the side frame 103 provided in the body frame AF, The rear end side is supported by a support portion 107 provided on the side wall of the threshing device D. As shown in FIGS. 2 and 15, the side frame 103 extends forward from a vertical frame 103 </ b> B that is erected on the aircraft frame AF and that is vertically oriented. The side plate 103A is supported by the side frame 103 and the vertical frame 103B.

  The movable portion M is rotatably supported by a support shaft 104 that is rotatably supported by a support portion 134 provided on the side frame 103 of the body frame AF, and is rotatably supported integrally with the support shaft 104. The first intermediate arm 105A, the second intermediate arm 105B, the third intermediate arm 105C, and the operating body T, one end of which is connected to the second intermediate arm 105B, are configured to swing. Therefore, the movable part M is supported by the support part 134 as a support part provided in the traveling machine body, and swings around the support shaft 104 with respect to the traveling machine body.

  The actuating body T includes a rod member 111 having a base connected to the second intermediate arm 105B by a connecting plate 116, a bearing block 112 that is screwed into a threaded portion at the tip of the rod member 111, and a lateral orientation with respect to the bearing block 112. And a roller 115 rotatably supported by the support shaft 114. The bearing block 112 is positioned on the rod member 111 by a fixing nut 113.

  The cutting unit frame 81 includes a connecting frame 85 that extends forward and upward from the base portion 82a of the main frame 82 of the cutting unit frame 81 and has an extended end connected to the upper end side of the pulling device 6 to support the pulling device 6. It is. The connecting frame 85 constitutes a swinging body that swings up and down integrally with the cutting unit frame 81. A guide part 110 is provided on the rear surface side of the rear part of the connecting frame 85 as a rocking body, and an operating body T is interposed between the guide part 110 and the second intermediate arm 105B.

  The guide portion 110 is disposed on both sides of the guide portion main body 110A that is flat in a posture along the rear surface of the connecting frame 85 (an inclined posture that is directed upward toward the front side) and a posture that rises from both sides of the guide portion main body 110A. And a pair of left and right lateral guide walls 110B. The connecting frame 85 is provided with a connecting portion 110C that protrudes from the guide portion main body 110A at the upper end of the guide portion main body 110A. The guide part 110 is attached to the upper surface of the connection frame 85 by a technique such as welding.

  The connecting plate 116 of the rod member 111 is swingably connected to the second intermediate arm 105B by a connecting pin 118 in a lateral orientation, and the roller 115 comes into contact with the guide portion main body 110A of the guide portion 110 by its own weight. Thus, the actuating body T is configured so that the rod member 111 is in the ON posture.

  A grip 119 that can be grasped and operated by an operator is formed at a position on the upper surface side of the bearing block 112 and on the tip side of the rod member 111. The side plate 103A is provided with a spring plate holder 120 capable of holding the rod material 111 therebetween. The holder 120 is composed of a spring plate material formed in a bifurcated shape so as to embrace the rod material 111, and is brought into a clamping state when an operator holds the grip 119 and sends the rod material 111 to the clamping position.

  As indicated by a two-dot chain line in FIG. 16, the rod material 111 is held in an off posture in which the roller 115 is separated from the guide portion 110 by being fitted into the holder 120. As shown in FIGS. 16 and 17, the rod member 111 is turned on by separating the rod member 111 from the holder 120 and bringing the roller 115 into contact with the upper surface of the guide portion main body 110 </ b> A in the guide portion 110.

  Even when the rod member 111 is in the ON posture, when the cutting part B is lowered to a predetermined height or less, the connecting frame 85 is lowered so that the roller 115 of the operating body T is engaged with the connecting part 110C. It is located in the guide part 110.

  When the rod member 111 is in the on posture, when the cutting part B is lifted at a predetermined height or less, the roller 115 is rotated to the guide part main body 110A in a state where the roller 115 of the operating body T rotates with the rising. Along the guide, the guide unit 110 moves and moves toward the connecting unit 110C. As shown in FIG. 17, the roller 115 of the operating body T is engaged with the connecting portion 110 </ b> C immediately before the cutting portion B reaches a predetermined height, and the movable portion M is connected to the connecting frame 85. Thereafter, when the cutting part B is raised above a predetermined height, the lifting force of the connecting frame 85 acts on the operating body T, so that the first intermediate arm 105A, the second intermediate arm 105B, and the third intermediate arm 105C The return spring 106 connected to the first intermediate arm 105A and the return spring 70b connected to the operation unit 80 are swung counterclockwise. As a result, the third intermediate arm 105C pulls the inner cable 130 of the operation cable W1, and the operation cable W1 operates the operation portion 80 of the feed chain clutch 70 to the cut position [cut].

  When the cutting part B is lowered below a predetermined height, the rod member 111 is displaced in the opposite direction to the above along the longitudinal direction thereof. In this case, while the roller 115 of the operating body T rotates, it moves in the direction away from the connecting portion 110C along the guide portion main body 110A of the guide portion 110, and the engagement between the roller 115 and the connecting portion 110C is released. The engagement between the body T and the connecting frame 85 is released, and the first intermediate arm 105A, the second intermediate arm 105B, and the third intermediate arm 105C are swung clockwise by the restoring force of the return spring 106 and the return spring 70b. As a result, the inner cable 130 is operated to the loose side, and the operation cable W1 operates the operation part 80 of the feed chain clutch 70 to the in position [on] by the restoring force of the return spring 106 and the return spring 70b.

  When the rod member 111 is in the off-position, even if the cutting part B is raised above a predetermined height, the operation cable W1 is not operated by the connecting frame 85 in which the operating body T rises, and the operation cable W1 is connected to the return spring 106 and the return spring. The operating portion 80 of the feed chain clutch 70 is maintained at the on position [on] while being operated to the loose side by the restoring force of 70b.

  Therefore, the link mechanism K1 is in an on state in which the cutting part B and the feed chain clutch 70 can be linked by keeping the rod material 111 in the on posture, and the rod material 111 is in the off posture. Accordingly, the linkage between the cutting part B and the feed chain clutch 70 is turned off.

  As shown in FIGS. 16 and 18, if the link mechanism K <b> 1 is turned on, the roller 115 of the operating body T is positioned at the guide portion 110 and the movable portion M when the mowing portion B is lowered below a predetermined height. By releasing the engagement with the connection frame 85 as the swinging body, the connection between the link mechanism K1 and the connection frame 85 is released, and the movable part M is operated by the restoring force of the return spring 106 and the return spring 70b to operate the operation cable W1. Is operated to the loose side, the link mechanism K1 switches the operation unit 80 to the on position [on] by the restoring force of the return spring 106 and the return spring 70b to switch the feed chain clutch 70 to the on state. . Therefore, if the rod member 111 is in the on posture, the threshing feed chain FC can be driven and the cutting operation can be started simply by lowering the cutting portion B to the lowering operation state.

  As shown in FIGS. 17 and 18, if the link mechanism K1 is in the ON state, the roller 115 of the operating body T engages with the connecting portion 100C when the reaping portion B is raised above a predetermined height, and the movable portion M is moved. When the link mechanism K1 is connected to the connection frame 85, the link mechanism K1 and the connection frame 85 are connected, and the movable portion M receives the ascending force of the connection frame 85 and pulls the operation cable W1, whereby the link mechanism K1 is Operated by the ascending operation of the connecting frame 85, the operation unit 80 is switched to the cut position [OFF], and the feed chain clutch 70 is switched to the cut state. Therefore, if the rod member 111 is in the on posture, the threshing feed chain FC can be stopped and traveled only by raising the mowing part B to the non-working state.

  If the link mechanism K1 is turned off, the operating body T does not engage with the connecting portion 110C and the movable portion M does not receive the rising force of the connecting frame 85 even if the cutting portion B is raised above a predetermined height. Accordingly, the link mechanism K1 does not operate to switch the feed chain clutch 70 to the disengaged state, and the threshing feed chain FC can be brought into the drive state while the feed chain clutch 70 is in the engaged state.

  As shown in FIG. 15, an input pulley 87 provided on the input shaft 81A of the cutting part B, an output pulley 88 provided on the output shaft 4b for the cutting part of the traveling mission case 4, a transmission belt 89, and a tension pulley A belt tension type cutting clutch G is constituted by a tension arm 91 provided with 90.

  The tension arm 91 is supported by an arm support shaft 92 provided on the body frame AF. The reaping clutch G is turned on when the tension arm 91 is swung around the arm support shaft 92, the tension pulley 90 is pressed against the transmission belt 89, and the transmission belt 89 is tensioned and operated. When the tension operation of the transmission belt 89 by the tension pulley 90 is released, the transmission belt 89 is turned off. When the cutting clutch G is operated in the engaged state, the driving force from the output shaft 4b is transmitted to the input shaft 81A to drive the cutting portion B, and when operated in the disconnected state, the transmission to the input shaft 81A is cut off. The mowing unit B is stopped.

  The reaping clutch G and the reaping part B can be linked by the reaping link mechanism K2 shown in FIG. The reaping link mechanism K2 links the reaping clutch G and the reaping part B by a mechanical mechanism, and when the reaping part B is raised above a predetermined height for reaping, the reaping clutch G is switched to the disengaged state, When the part B is lowered below a predetermined height for cutting, the cutting clutch G is switched to the engaged state. When turning after finishing the mowing operation, a height that is slightly lower than the height set as the mowing portion B is raised is set as the predetermined height for mowing.

The mowing link mechanism K2 will be described.
As shown in FIG. 15, the cutting link mechanism K2 includes a movable part M as a link mechanism constituent body shared with the link mechanism K1, and an operation cable W2 that links the movable part M and the cutting clutch G. It is.

  One end side of the inner cable 97 constituting the operation cable W2 is connected to the side frame 103, and the other end side is connected to the operation portion 91A of the tension arm 91 as the operation portion of the cutting clutch G, the first intermittent arm 94A, The second intermittent arm 94B and the lower rod 95 are connected. The first intermittent arm 94 </ b> A and the second intermittent arm 94 </ b> B are supported by a lower support shaft 93 supported by the body frame AF, and swing integrally with the lower support shaft 93 as a center.

  One end side of the outer cable 98 constituting the operation cable W2 is supported by the lower end side of the operation link 102, and the other end side is supported by the first intermediate arm 105A. The upper end side of the operation link 102 is rotatably supported by the operation arm 101. The operating arm 101 is supported on the lever support shaft 100 of the reaping clutch lever 33 so as to be integrally rotatable on the side opposite to the side to which the operating link 102 is connected, and swings integrally with the reaping clutch lever 33. The operation cable W2 is provided in a state where a portion between a portion connected to the operation link 102 and a portion connected to the first intermediate arm 105A is curved upward. A return spring 106 for pulling up the first intermediate arm 105A is connected to the first intermediate arm 105A. The mowing clutch lever 33 is held at the on position “on” and the off position “off” by a holding mechanism (not shown). As shown in FIG. 15, when the cutting clutch lever 33 is positioned at the cutting position “cut”, the upper end side of the operating link 102 is substantially at the same height as the lever support shaft 100, and the operating link 102 supported by this is It is at a low level. Accordingly, as shown in FIG. 16, when the cutting clutch lever 33 is positioned at the on position “on”, the upper end side of the operating link 102 reaches a position higher than the lever support shaft 100, and the operating link 102 is pulled up to a high position. It is done.

  When the cutting part B is lowered below a predetermined height for cutting, the connection between the actuating body T and the connection frame 85 is released, and the movable part M does not receive the operation force by the connection frame 85. Thereby, when the cutting clutch lever 33 is set to the cutting position [cutting], the inner cable 97 is loosened, and the tension arm 91 is operated to the cutting side as shown in FIG.

  In this state, as shown in FIG. 16, when the harvesting clutch lever 33 is operated to the entering position [on], the operation link 102 is lifted to lift one end of the outer cable 98. On the other hand, since one end portion of the inner cable 97 is fixed to the side frame 103, one end portion of the inner cable 97 is moved from one end portion of the outer cable 98 as the outer cable 98 rises. Relatively move in the direction of withdrawal. Since the other end of the outer cable 98 is supported by the first intermediate arm 105A, the intermediate portion (curved portion) of the outer cable 98 rises, and the inner cable 97 also rises together with the outer cable 98. As a result, tension is generated in the inner cable 97.

  When tension is applied to the inner cable 97 as described above, the inner cable 97 having a length corresponding to the drawn length of the inner cable 97 drawn from one end of the outer cable 98, as described above, It is pulled into the other end. Accordingly, the tension of the inner cable 97 is applied to the first intermittent arm 94A, the tension arm 91 is swung to the clutch engagement side, and the cutting clutch G is operated to the engagement state.

  When the cutting part B is lifted with the rod member 111 in the on position and the cutting clutch G in the engaged state, the roller 115 of the operating body T receives the guidance of the guide part 110 along with the rising. The roller 115 of the operating body T engages with the connecting portion 110C and the movable portion M is connected to the connecting frame 85 immediately before the cutting portion B reaches the predetermined height for cutting. . When the cutting part B is raised above the predetermined height for cutting, as shown in FIG. 17, the movable part M receives the rising force of the connecting frame 85, and the first intermediate arm 105A and the second intermediate arm 105B return. The first intermediate arm 105A is operated to move the end of the outer cable 98 downward and the inner cable 97 is loosened, and the operation cable W2 is a tension arm. The cutting clutch G is switched to the disengaged state by swinging 91 to the disengagement side.

  After the reaping link mechanism K2 switches the reaping clutch G to the disengaged state, when the reaping portion B is lowered below the predetermined height for reaping, the rod material 111 is moved along the longitudinal direction thereof, The roller 115 of the operating body T is moved in the reverse direction to be positioned at the guide portion 110 so that the connection between the movable portion M and the connection frame 85 is released, and the first intermediate arm 105A and the second intermediate arm 105B are moved by the return spring 106. It swings clockwise by the restoring force. As a result, the inner cable 97 is tensioned by the return spring 106, the tension arm 91 is swung to the entering side, and the cutting clutch G is switched to the engaged state.

  In a state where the cutting part B is lowered below a predetermined height for cutting, when the operator holds the grip 119 and pulls up the rod member 111 of the operating body T to be in the off position, thereafter, the cutting part B Is raised above the predetermined height for cutting, the roller 115 of the rod member 111 is disengaged from the connecting portion 110C, and the connection between the movable portion M and the connecting frame 85 is released, so that the tension arm 91 returns. The cutting clutch G is maintained in the engaged state by being operated to the entering side by the spring 106.

  Thereafter, in a state where the cutting part B is lowered from the predetermined height for cutting, the operator grasps the grip 119 and operates downward to return the rod member 111 to the on position. When the rod member 111 is returned to the on position, the roller 115 of the rod member 111 is introduced between the pair of lateral guide walls 110B of the guide portion 110. Thus, when the cutting part B is raised above the predetermined height for cutting after the rod member 111 is returned to the ON position, the roller 115 of the rod member 111 engages with the connecting part 110C, and the movable part M is connected. By engaging with the frame 85 and receiving the upward force of the connecting frame 85, the cutting clutch G is switched to the disengaged state.

  Accordingly, the cutting link mechanism K2 is in an ON state in which the cutting part B and the cutting clutch G can be linked by keeping the rod member 111 in the ON posture, and the rod member 111 is in the OFF posture. As a result, the linkage between the cutting part B and the cutting clutch G is turned off.

  When the reaping clutch lever 33 is operated to the on position [on], if the reaping link mechanism K2 is turned on, when the reaping part B is lowered below the predetermined height for reaping, the movable part M By acting in the same manner as when the link mechanism K1 is operated, the cutting link mechanism K2 is switched to the cutting clutch G engaged state by the restoring force of the return spring 106. Therefore, if the rod member 111 is in the ON posture, the cutting unit B is driven and the cutting operation can be started only by lowering the cutting unit B to the lowering operation state.

  If the reaping link mechanism K2 is in the ON state, when the reaping part B is raised above the predetermined height for reaping, the movable part M acts in the same manner as when the linking mechanism K1 is operated, thereby the reaping link. The mechanism K2 is operated by the ascending operation of the connecting frame 85 to switch the reaping clutch G to the disengaged state. Therefore, if the rod member 111 is in the ON posture, the cutting unit B can be stopped and traveled only by raising the cutting unit B to the non-working state.

  If the reaping link mechanism K2 is turned off, the movable portion M is the same as the case where the severing operation of the feed chain clutch 70 by the link mechanism K1 is not performed even if the reaping portion B is raised above the predetermined height for reaping. As a result, the reaping link mechanism K2 does not operate to switch the reaping clutch G to the disengaged state, and the reaping portion B can be brought into the driving state while the reaping clutch G is in the engaged state.

  The timing at which the link mechanism K1 switches the feed chain clutch 70 to the disengaged state when the mowing part B is raised differs from the timing at which the link mechanism K2 switches the mowing clutch G to the disengaged state when the mowing part B rises. In this way, the link mechanism K1 and the cutting link mechanism K2 are configured so that the feed chain clutch 70 has a predetermined height of the cutting unit B that is switched to the cutting state by the link mechanism K1, and the cutting clutch G is the cutting link mechanism. The height is set to be higher than a predetermined height for cutting of the cutting unit B which is switched to the cutting state by K2.

  Therefore, when the reaping part B is raised from the lowered working state toward the ascending non-working state and the reaping part B exceeds a predetermined height for reaping, the reaping part B is stopped. Even if the harvesting part B is stopped, the threshing feed chain FC continues to be driven until the harvesting part B exceeds a predetermined height, and the harvested cereal residue remaining in the threshing device D is removed by the threshing feed chain FC. Be transported. When the cutting part B further rises and exceeds a predetermined height, the driving of the threshing feed chain FC is stopped.

  In the link mechanism K1 and the cutting link mechanism K2, the protrusion amount of the roller 115 with respect to the rod material 111 can be adjusted by rotating the bearing block 112 that is screwed into the thread portion of the rod material 111. Therefore, by adjusting the protruding amount of the roller 115 and operating the fixing nut 113 to fix the roller 115 at the adjusted position, the predetermined height for cutting of the cutting part B where the cutting clutch G is switched to the cut-off state is operated. In addition, the predetermined height of the cutting portion B where the feed chain clutch 70 is switched to the disengaged state can be changed and set.

[Another Example]
(1) In the above-described embodiment, the example in which the feed chain clutch 70 is switched to the on state by the restoring force of the link mechanism K1 when the cutting part B is lowered to a predetermined height or less is shown. The feed chain clutch 70 may be configured to be switched to the on state by an actuator such as a cylinder or a motor when the cutting part B is lowered below a predetermined height.

(2) In the above-described embodiment, the example in which the reaping part B and the reaping clutch G are linked by the reaping link mechanism K2 has been described. Electricity is detected by an electric linkage mechanism comprising a detection switch for detecting the length, an actuator such as an electric motor or a hydraulic cylinder for switching the cutting clutch G, and an electric circuit or control means for linking the detection switch and the actuator. You may carry out by linking with a device.

(3) In the above-described embodiment, an example in which a meshing clutch is employed as the feed chain clutch 70 has been described. However, a belt tension clutch or a friction clutch may be employed.

(4) In the above-described embodiment, an example in which a belt tension type clutch is employed as the cutting clutch G has been described. However, an engagement type or friction type clutch may be employed.

(5) In the above-described embodiment, the movable part M is shared by the movable part for constituting the link mechanism K1 and the movable part for constituting the cutting link mechanism K2, and the link mechanism K1 and the cutting part are used. Although the example which comprised link mechanism K2 was shown, you may implement by providing separately the movable part for constituting link mechanism K1, and the movable part for constituting link mechanism K2 for cutting.

(6) In the above-described embodiment, the example in which the movable portion M is a link mechanism constituent body shared by the link mechanism K1 and the cutting link mechanism K2 has been shown. Alternatively, only the first intermediate arm 105A and the second intermediate arm 105B may be implemented as a link mechanism structure shared by the link mechanism K1 and the cutting link mechanism K2.

(7) In the above-described embodiment, the operation cable W1 configured such that the inner cable 130 is coupled across the movable portion M and the operation portion 80 of the feed chain clutch 70 and the inner cable 130 is operated by the movable portion M is employed. However, the operation is performed by adopting the operation cable W1 configured such that the inner cable 130 is connected to the fixed portion and the operation portion 80 of the feed chain clutch 70 and the outer cable 131 is operated by the movable portion M. May be.

(8) In the above-described embodiment, the other end of the inner cable 97 whose one end is connected to the side frame 103 is interlocked with the operation portion 91A of the cutting clutch G, and the outer cable 98 is connected by the cutting clutch lever 33 and the movable portion M. Although the example which employ | adopted the operation cable W2 comprised so that it might be operated was shown, the cutting clutch lever 33 and the operation part 91A of the cutting clutch G are interlocked by the inner cable 97, and the inner cable 97 is operated by the cutting clutch lever 33. The operation cable W <b> 2 configured so that the outer cable 98 is operated by the movable portion M may be adopted.

(9) In the above-described embodiment, the predetermined height of the cutting part B where the feed chain clutch 70 is switched to the cut state by the link mechanism K1, and the cutting clutch G is switched to the cut state by the cutting link mechanism K2. The example in which the cutting height of the cutting part B is set to be higher than the predetermined height for cutting is shown, but the predetermined height of the cutting part B where the feed chain clutch 70 is switched to the cut state and the cutting clutch G is switched to the cutting state. The predetermined height for cutting of the cutting part B to be performed may be set to be the same. Further, the predetermined height for cutting of the cutting part B where the cutting clutch G is switched to the cut state is set to be higher than the predetermined height of the cutting part B where the feed chain clutch 70 is switched to the cutting state. May be.

(10) In the above-described embodiment, an example in which the cutting part B is configured to cut five lines has been described. However, the cutting part B may be configured to perform cutting of four lines or less or six lines or more.

  The present invention can be used for a combine that includes the crawler travel device 1 and also includes wheels as travel devices.

70 Feed chain clutch 81 Mowing unit frame 85 Oscillator (connection frame)
DESCRIPTION OF SYMBOLS 110 Guide part 110C Connection part 134 Support part A Traveling machine body B Cutting part D Threshing apparatus FC Threshing feed chain G Cutting clutch K1 Link mechanism K2 Cutting link mechanism M Movable part W1 Operation cable

Claims (10)

A cutting part connected to the front part of the traveling machine body so as to be movable up and down;
A threshing device having a threshing feed chain for conveying the harvested cereal meal from the harvesting unit;
A feed chain clutch that is switchable between an entering state that is transmitted to the threshing feed chain and a state in which transmission to the threshing feed chain is cut off;
A link mechanism that links the mowing unit and the feed chain clutch,
The link mechanism is a combine that switches the feed chain clutch to the disengaged state when the cutting unit is raised above a predetermined height.   The combine according to claim 1, wherein the combiner is configured to switch the feed chain clutch to the engaged state when the mowing part is lowered below the predetermined height. The cutting part includes a cutting part frame that extends vertically swingable from the traveling machine body, and a swinging body that swings integrally with the cutting part frame,
When the cutting unit is raised above the predetermined height, the link mechanism and the swinging body are connected, and the link mechanism is operated by the lifting operation of the swinging body to switch the feed chain clutch to the disengaged state. A combine according to claim 1 or 2 configured to operate.   When the cutting part is lowered below the predetermined height, the connection between the link mechanism and the rocking body is released, and the link mechanism switches the feed chain clutch to the engaged state by a restoring force. The combine according to claim 3 configured. The link mechanism includes a movable part that is swingably supported by a support part provided in the traveling machine body, and an operation cable that links the movable part and the feed chain clutch.
5. The movable unit according to claim 3, wherein the movable unit engages with the swinging body when the cutting unit is lifted from the predetermined height, and operates the operation cable in response to a lifting force of the swinging body. Combine.   The combine according to claim 5, wherein the movable part releases the engagement with the swinging body by a restoring force and operates the operation cable when the cutting part is lowered to the predetermined height or less. The swing body is provided with a connecting portion for engaging the movable portion with the swing body, and a guide portion for guiding the movable portion to the connecting portion,
When the mowing part is lowered below the predetermined height, the movable part is positioned at the guide part, and when the mowing part is raised above the predetermined height, the movable part is engaged with the connecting part. The combine according to claim 5 or 6, wherein the combine is configured. A cutting clutch that can be switched between an on-state transmitting to the cutting unit and a cutting-off state where transmission to the cutting unit is cut off,
A link mechanism for cutting that links the cutting unit and the cutting clutch;
The reaping link mechanism switches the reaping clutch to the disengaged state when the reaping portion is raised above a predetermined height for reaping, and the reaping portion is lowered below the predetermined height for reaping. Then, the combine according to any one of claims 1 to 7, wherein the harvesting clutch is switched to the engaged state.   The combine according to claim 8, wherein the link mechanism and the cutting link mechanism include a common link mechanism structure.   10. The predetermined height at which the feed chain clutch is switched to the disengaged state is set higher than the predetermined height for cutting at which the harvesting clutch is switched to the disengaged state. Combine as described.

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