JP2014033671A - Combine - Google Patents

Abstract

The present invention provides a combine that can reduce the risk of damage to a cutting drive unit provided to drive a cutting device.
A mowing device 21 for mowing a planted stem stalk in a mowing work area defined by side walls on both the left and right sides of the mowing part, and a laterally outer side of either one of the side wall parts 14R, from a driving part A cutting drive unit K that drives the cutting device 21 with the transmitted power, and a frame body 105 that is located on the laterally outer side of the one side wall portion 14R and covers the laterally outer side portion and the lower side portion of the cutting drive unit K. Is provided.
[Selection] Figure 11

Description

  The present invention relates to a combine provided with a cutting device for cutting planted stems at a cutting portion at the front of the machine body.

  In this type of combine, a cutting drive unit for driving the cutting device is provided on the lateral outer side of one of the left and right side wall portions of the cutting unit. Conventionally, the lateral outer side of the place where such a reaping drive unit is provided is configured to be covered with, for example, a resin decorative cover (see, for example, Patent Document 1).

JP 2007-159466 A

  In the above conventional configuration, the cutting drive unit is provided on the side wall of the cutting unit, and this side wall constitutes a part of the support frame that supports the entire cutting unit and has a high support strength. It is. And, for example, when a ridge or a projection on a farm field approaches from the front of the machine during the cutting operation, the side wall part accepts external objects such as a ridge or a projection on the farm field. It is possible to avoid damage to the cutting drive unit.

  However, for example, when a reed or a projecting part of a farm field approaches from a side of the machine body to a portion where a retrieval drive unit is present along with a retrieval operation, the above-described decorative cover is sufficient. There is a risk that it will not be provided with sufficient strength and may be easily damaged, and the cutting drive unit may be damaged by directly contacting the cutting drive unit with a ridge or a protruding portion of the field.

  An object of the present invention is to provide a combine that can reduce the risk of damage to a cutting drive unit provided to drive the cutting device.

The first characteristic configuration of the combine according to the present invention is a reaping device for reaping the planted stalks in the reaping work area defined by the left and right side walls of the reaping part,
A reaping drive unit that is located on the laterally outer side of one of the left and right side wall parts, and that drives the reaping device with power transmitted from the driving unit;
A frame body is provided on the laterally outer side of the one side wall portion and covers a laterally outer side portion and a lower side portion of the cutting drive unit.

  According to the first characteristic configuration, the laterally outer side portion and the lower side portion of the cutting drive unit are covered with the laterally outer side portion of the side wall portion on the side where the cutting drive unit is provided, on the left and right side wall portions of the cutting unit. A frame body is provided.

  By providing such a frame body, it seems that when cutting or the like, a ridge or a protruding part of a farm field approaches the cutting drive unit from the lateral outer side or from the lower side. In any case, by receiving by the frame body, it is possible to prevent the cutting drive unit from being damaged by directly contacting the cutting drive unit with the ridge or the protruding portion of the field. .

  Therefore, according to the 1st characteristic structure, it came to be able to provide the combine which can reduce the possibility that the cutting drive part provided in order to drive a cutting device may be damaged.

  According to a second characteristic configuration of the present invention, the frame body has an outermost protruding portion that protrudes laterally outward, and is formed on the front side of the body of the outermost protruding portion, and on the front side of the body in plan view. And a front-side inclination guide portion having an inclination posture located in the position.

  According to the second characteristic configuration, the frame body includes the outermost protruding portion that protrudes most laterally outward. Therefore, when the basket or the protruding portion of the farm field approaches from the lateral outer side, the outermost portion of the frame body is provided. It can be received by the protrusion. And, since the front-side tilt guide part is provided in a tilted posture that is located closer to the front side of the body in plan view in a state of being located on the front side of the body side of the most protruding part, for example, the body travels forward in a farm field. Even when the ridges and the protruding parts of the farm field approach the frame body from the front side on the lateral side of the machine body, It can be avoided that the projecting portion or the like of the field directly contacts the cutting drive unit and damages the cutting drive unit. As a result, the reaping drive unit can be more effectively protected.

  According to a third feature of the present invention, the frame body is formed on the frame body with the outermost projecting portion projecting laterally outward and on the rear side of the body of the outermost projecting portion, and on the rear side of the body in plan view. It is in the point provided with the rear side inclination guide part in the inclination attitude | position which is located.

  According to the third characteristic configuration, the frame body includes the outermost protruding portion that protrudes most laterally outward. Therefore, when the basket or the protruding portion of the farm field approaches from the lateral outer side, It can be received by the protrusion. And, since the rear side tilt guide part is provided on the rear side of the machine body in a state of being projected to the rear side of the machine body in the state of the most protruding part, the rear side inclination guide part is provided on the vehicle body side. Even when the ridge or the protruding part of the field approaches the frame body from the rear side on the lateral lateral side of the machine body, It is possible to avoid damage to the cutting drive unit by directly contacting the cutting drive unit with the protruding portion of the farm or the like. As a result, the reaping drive unit can be more effectively protected.

  According to a fourth characteristic configuration of the present invention, the frame body includes a bottom surface portion that covers a lower side portion of the cutting drive unit, and a lower side as viewed from the front of the body so as to continue from the lower end portion of the most protruding portion to the bottom surface portion. The lower inclination guide part of the inclination attitude | position located in the body inner side is in the point provided.

  According to the fourth feature configuration, even when the hull or the projecting portion of the farm field approaches the cutting drive unit from the lower side of the cutting drive unit while the vehicle is traveling in the field, the lower side Since it is received by the bottom face part which covers a location, a cutting drive part can be protected. In addition, when a straw or a protruding portion of a farm field approaches obliquely upward from a lower position on the lower lateral side of the machine body, it is received by the lower inclined guide portion. As a result, the reaping drive unit can be more effectively protected.

According to a fifth feature of the present invention, a divider for dividing a planted stem into a cutting target stem and a non-cutting target stem at each of the front end portions of the left and right side walls, and the front side of the frame body And a guide rod that guides the non-harvesting target stem to the laterally outer side of the harvesting work area,
An inclination guide portion extending in an inclined state from the divider to a laterally outward rear side from the divider, and extending from a rear end portion of the inclination guide portion toward an inward side of the vehicle body, provided on the one side wall portion. In addition, the vehicle body side end portion is provided with a lateral connection portion fixed to the one side wall portion.

  According to the fifth characteristic configuration, the guide rod provided on the one side wall portion is provided with the inclined guide portion and the laterally connecting portion, so that the support strength is increased, and the guide rod other than the stem rod such as the ridge or the protruding portion of the farm field is provided. Even if an external object may come into contact with the inclined guide portion, the load can be received by the laterally connected portion and the one side wall portion to which the externally connected portion is fixed, and is difficult to break.

  In this way, since one side wall portion that supports the cutting drive unit is provided with a strong guide rod, the guide rod has a function of protecting the cutting drive unit, and the protection of the cutting drive unit is more accurately performed. It will be easy to do.

  A sixth characteristic configuration of the present invention is that the guide rod and the frame body are provided in a state in which their distal end portions on the laterally outer side are at the same position in the front view of the body.

  According to the sixth characteristic configuration, the laterally outer tip of the guide rod and the laterally distal tip of the frame body are at the same position in the front view of the aircraft. When an external object other than a stem culm such as a protruding part of a farm field comes close, the guide rods arranged in front and rear and the frame body come into contact with the external object at substantially the same timing. It is possible to exhibit the function of protecting the cutting, and it is easy to protect the cutting drive unit more accurately.

  A seventh characteristic configuration of the present invention resides in that the guide rod and the frame body are provided in a partially overlapping state along the front-rear direction.

  According to the seventh feature configuration, since the guide basket and the frame body partially overlap along the front-rear direction, in the place where they overlap, when an external object such as a basket or a protrusion on the field comes into contact, The guide rod and the frame body can simultaneously exert a protection function, and both can easily exhibit the function of protecting the cutting drive unit in cooperation.

  The eighth characteristic configuration of the present invention is that the guide rod partially overlaps with the frame positioned above the frame body.

  According to the eighth characteristic configuration, the frame body has higher support strength than the guide rod, but the frame body is positioned below the guide rod at the overlapping portion thereof, so that the frame body and the projection on the field etc. When the external object approaches, the frame body having a high support strength is contacted first, so that the function of protecting the cutting drive unit can be more effectively exhibited.

The ninth characteristic configuration of the present invention is provided with a decorative cover that covers a laterally outer side of the cutting drive unit and a transmission mechanism that transmits power to the cutting drive unit at an outer side portion of the one side wall portion.
The frame body is provided in a state in which the frame body covers a laterally outer side portion of the front portion of the decorative cover.

  According to the ninth characteristic configuration, since the frame body covers the laterally outer side portion of the front part of the decorative cover for covering the laterally outer side of the cutting drive unit and the transmission mechanism, Even when an external object such as a protrusion of the frame approaches, it is possible to prevent the decorative cover from being damaged by the frame body, and it is easy to maintain the state in which the decorative cover covers the lateral outer sides of the cutting drive unit and the transmission mechanism. It will be a thing.

It is a whole side view of an ordinary combine. It is a whole top view of a normal combine. It is a partially cutaway side view of a cutting and conveying part. It is a side view of a cutting part. It is a top view of a rotating reel. It is a rear view of a cutting part. It is a rear view which shows the transmission structure with respect to a cutting part. It is a vertical rear view of a torque limiter arrangement part. It is a vertical rear view which shows the transmission mechanism on an input shaft. It is a front view of a cutting drive part arrangement | positioning part. It is a top view of a cutting drive part arrangement | positioning part. It is a perspective view of a balance weight arrangement | positioning part.

Hereinafter, an ordinary combine which is an example of a combine according to the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the combine harvests crops at the front of a traveling vehicle body 3 having a pair of left and right front wheels 1 and a pair of left and right rear wheels 2 that can be steered. A cutting and conveying unit 4 serving as a cutting and conveying device that conveys rearward is supported by a cutting and lifting cylinder 5 including a hydraulic cylinder as a lifting actuator so as to be driven up and down around a lateral fulcrum. The traveling vehicle body 3 is threshed by the boarding operation unit 7 covered by the cabin 6 on the front side, the threshing device 8 for performing the threshing process of the crops harvested by the cutting and conveying unit 4, and the threshing device 8. The grain tank 9 which stores the grain obtained by this, the engine 10 for a drive as a drive part, etc. are provided.

Next, the configuration of the cutting and conveying unit 4 will be described.
The harvesting and transporting unit 4 harvests crops to be planted with a predetermined trimming width, and harvests the harvested crops to the middle in the trimming width direction, and the harvested and gathered crops to the center at the rear of the aircraft The feeder 12 is configured to be conveyed toward the threshing device 8.

  As shown in FIGS. 2 and 3, the harvesting unit 11 is connected to the transport deck 13 that receives and transports the harvested crop, the pair of left and right side wall portions 14 </ b> R and 14 </ b> L located on the left and right sides of the transport deck 13, and the feeder 12. The cutting part frame 17 has a frame structure in which a rear side part 16 on the rear side in which an opening 15 is formed is fixed. Further, a divider 18 for weeding the planted stems into the cutting target stems and the non-cutting target stems in front of the left and right side wall portions 14R and 14L, and the non-cutting target stems in the laterally outer side of the cutting work area. A guide rod 19 for guiding is provided.

  In the cutting part 11, a lateral feed auger 20 that feeds and gathers the harvested crops to the middle part in the cutting width direction while being brought close to the upper side of the transport deck 13 extends over the left and right side wall parts 14R, 14L. A reaping device 21 is provided that is installed in a state of being erected and that cuts the stock of the crop along the front end of the transport deck 13. In addition, a rotary reel 22 is provided at an upper portion of the front part of the lateral feed auger 20 so that the tip side of a crop to be cut is scraped back.

  The lateral feed auger 20 is provided with a pair of left and right screw blades 24 that feed laterally toward the front end portion of the feeder 12 as it rotates to gather toward the center in the lateral width direction. At the same time, rod-shaped scrambling bodies 25 that are withdrawn from and retracted from the auger drum 23 are provided at a plurality of locations in the circumferential direction at locations facing the front end entrance of the feeder 12.

  As shown in FIG. 3, the scraping body 25 is accompanied by the rotation of the auger drum 23 with respect to the support shaft 25 </ b> A supported in a fixed position at a position eccentric with respect to the rotation axis of the auger drum 23. The auger drum 23 is supported so as to be rotatable, and the amount of protrusion from the outer periphery of the auger drum 23 changes as the auger drum 23 rotates.

  As shown in FIGS. 10 and 11, the cutting device 21 is configured in a clipper shape, and is provided with the fixed blade 21 </ b> A and the movable blade 21 </ b> B overlapping vertically, and the movable blade 21 </ b> B reciprocally slides laterally at a constant pitch. By being driven, the planted crop can be cut.

The rotary reel 22 is provided in a state of being supported by a pair of left and right support arms 26 extending forward from an upper portion on the base end side of the reaper part frame 17.
That is, as shown in FIGS. 4 and 5, a pair of left and right pentagonal reel frames 28 in a side view so as to be integrally rotatable with the left and right ends of the drive shaft 27 rotatably supported at the distal ends of the pair of support arms 26. The tine support members 29 are provided in a state of being laid over the pair of left and right reel frames 28 and being positioned one by one at the five tops. A plurality of tines 30 (scratching nails) are attached in a state of being arranged along the direction.

A well-structured posture holding mechanism 31 is provided to hold the posture so that the tine 30 extends downward from the tine support member 29 regardless of the rotation of the rotary reel 22.
Next, the posture holding mechanism 31 will be briefly described. As shown in FIGS. 4 and 5, a pentagonal auxiliary rotating body 32 is provided on one lateral outer side of the rotary reel 22 in a side view of the body. As the rotating reel 22 rotates, the auxiliary rotating body 32 is rotated around an axis P2 different from the rotating axis P1 of the rotating reel 22 by the driving force transmitted from the rotating reel 22 via the link 33. It is configured. Each tine support member 29 is supported so as to be rotatable relative to the reel frame 28 while being integrally rotated with the link 33. Then, a parallel quadruple link mechanism that connects the rotation axis P1, the rotation axis P2, and the rotation fulcrums on both sides of the link 33 to each other is formed, and the tine 30 of each tine support member 29 is used to rotate the rotation reel 22. Regardless, it is configured to hold a posture extending downward from the tine support member 29.

  A hydraulic cylinder 34 is connected to each of the pair of support arms 26 and the cutting part frame 17, and the pair of hydraulic cylinders 34 causes the pair of supporting arms 26 to move around the axis P <b> 3 on the rear base end side. The rotary reel 22 is supported to be movable up and down by swinging up and down.

  As shown in FIG. 5, the tine support member 29 is made of a metal pipe material, and the tine 30 is fastened and fixed to the tine support member 29 with bolts 35. A pair of adjacent tines 30 is made of metal. The structure is formed integrally with a spring material. That is, the heads of the pair of tines 30 are integrally connected by the connecting part 36, and the attached part 37 is formed in the connecting part 36, and the attached part 37 is applied to the tine support member 29 in the bolted state. It is configured to stop.

  Although not described in detail, the pair of tines 30 are integrally formed so as to be connected in series and hang downward through a helical coil spring portion 38. The coil spring portion 38 causes the bending displacement of the drooping rod-like portion 39 due to the reaction force of the planted cereal and the ground accompanying rotation of the rotary reel 22 by elastic deformation in the reduced diameter direction (or increased diameter direction). It is configured to absorb.

  In addition, the arrangement configuration of the plurality of tines 30 in each of the five tine support members 29 is the same, and the assembly unit in which the plurality of tines 30 are attached to the tine support member 29 has the same configuration in all five groups. To share. In this way, cost reduction is achieved by sharing the members. Incidentally, the plurality of tines 30 are arranged in a state where they are arranged at predetermined intervals in the cutting width direction on the basis of the left and right end portions of the rotary reel 22 so that the gap between the tine 30 is not increased near the end portions on both the left and right sides. Is provided. By configuring in this way, the mistake of scraping the planted stalks is prevented from occurring in the vicinity of the left and right ends of the rotary reel 22.

  As shown in FIG. 3, the feeder 12 is configured such that an engagement conveyance-type conveyance conveyor 41 is provided inside a conveyance case 40 formed in a rectangular tube shape. The conveyor 41 is provided with a pair of left and right endless rotating chains 43 that are wound around a drive sprocket (not shown) supported rotatably around a horizontal axis and a driven wheel body 42. . The conveying bar 44 is horizontally connected at a predetermined pitch across the pair of left and right endless rotating chains 43. When the endless rotating chain 43 is driven and rotated, it is laterally fed by the cutting unit 11. The cultivated crop is scraped and transported by the transport bar 44 in the transport case 40 and transported to be put into the threshing device 8.

  As shown in FIG. 3, a rectangular connection peripheral frame portion 46 that constitutes an opening 45 for connection with the cutting portion 11 is formed at the front end portion of the transport case 40 in the feeder 12. A lower frame portion 47 constituting a lower side frame portion of the peripheral frame portion 46 is provided, and the cutting lift cylinder 5 is connected via a square cylindrical support member 48 connected to the lower frame portion 47.

  As shown in FIG. 6, the back part 16 of the cutting part 11 to which the feeder 12 is connected is provided with square pipe-like frame members 49, 50 extending on the upper and lower side parts over the entire width in the lateral direction. In addition, an opening 15 for connection with the feeder 12 is formed in the back surface portion 16, and a region excluding the connection opening 15 is covered with a wall portion. On both the left and right sides of the connection opening 15, there are provided vertical reinforcing members 51 that are substantially U-shaped in plan view and extend in the vertical direction across the upper and lower frame members 49 and 50.

  As shown in FIGS. 3 and 6, a reinforcing plate 52 made of a plate material having a substantially L-shaped cross section is provided at a corner corresponding to the upper side of the opening 15 in the frame member 49 on the upper side. It is provided in a state where it is fixed to the part by welding. The reinforcing plate 52 is extended to a position slightly laterally outward from the vertical reinforcing members 51 on the left and right sides.

Next, a transmission structure for the cutting unit 11 will be described.
As shown in FIG. 6, the power of the engine 10 from the traveling vehicle body 3 side is stretched along the horizontal side of the feeder 12, and the feeder 12 of the cutting unit 11 Power is supplied to the input shaft 53 laid horizontally along the back surface portion 16 located on the right side.

  As shown in FIGS. 6 and 7, the power supplied to the input shaft 53 is transmitted through the auger transmission mechanism 54, the cutting blade transmission mechanism 55, and the reel transmission mechanism 56. The transmission system is configured to be supplied to the reaping device 21 and the rotary reel 22. The input shaft 53 extends along the lateral width direction of the vehicle body along the back surface portion 16, and is rotatably supported by the bearing member 57 so as to protrude laterally outward from the right side wall portion 14R.

  As shown in FIGS. 4, 7, and 8, the auger transmission mechanism 54 includes a drive sprocket 58 provided on the outer side of the bearing member 57 of the input shaft 53, and the auger drum 23 in the lateral feed auger 20. An endless rotating chain 61 for driving an auger is wound around a driven sprocket 60 provided on a driving shaft 59 that rotates integrally. The auger transmission mechanism 54 is provided with a torque limiter 62 that allows relative rotation when a torque greater than a set value is applied.

  As shown in FIG. 8, the torque limiter 62 is externally fitted so that the driven sprocket 60 is rotatable relative to the drive shaft 59 of the lateral feed auger 20, and is interlocked to rotate integrally with the driven sprocket 60 and the drive shaft 59. An occlusal portion 64 that engages with the member 63 along the axial direction is formed, and includes a spring 65 that presses and urges the driven sprocket 60 in the direction in which they engage.

  The torque limiter 62 engages against the biasing force of the spring 65 when the rotation of the lateral feed auger 20 is blocked by crops being jammed in the lateral feed auger 20 and a torque greater than the set value is applied to the drive shaft 59. The portion 64 is idle so as to allow relative rotation.

  In the torque limiter 62, when the idle rotation of the engagement portion 64 as described above occurs, the spring receiving member 66 that also serves as a set pressure adjusting member rotates due to the idle rotation, and the set pressure changes. It is configured not to do.

  That is, a screw portion 67 is formed at the shaft end portion of the drive shaft 59, and two nuts 68 for receiving and holding the spring receiving member 66 are attached to the screw portion 67. The screw portion 67 formed on the drive shaft 59 is formed with a screw so that the nut 68 does not loosen even when the idling as described above occurs.

  If the explanation is added, during the idling as described above, the rotation of the drive shaft 59 is stopped due to the clogging of the crops, etc., but the biting portion 64 is idling and the driven sprocket 60 continues to rotate. . At that time, as the driven sprocket 60 rotates, the spring 65 and the spring receiving member 66 may rotate. The nut 68 also tries to rotate by such continuous rotation, but the screw portion 67 is provided in such a shape that the nut 68 is screwed to the shaft end side (right side in FIG. 8) during the continuous rotation. Yes.

  Since the two nuts are arranged in a line, even if an idle rotation occurs and the nut 68 positioned on the spring receiving member 66 side tries to rotate so as to screw into the shaft end side (the right side in FIG. 8), The nut 68 does not rotate, and the position of the spring receiving member 66 does not change in the axial direction.

  Further, a plurality of gap adjusting plates (shim) 70 are provided between the spring receiving member 66 and the shaft step portion 69 formed on the drive shaft 59. When changing and adjusting the torque setting pressure, first, After removing the two nuts 68, the number of interval adjusting plates (shims) 70 is changed, and the two nuts 68 are mounted again and screwed to the spring side so that the spring receiving member 66 is moved to the spring side. The torque set pressure of the torque limiter 62 can be changed by moving to and tightening.

  As shown in FIG. 4, the cutting blade transmission mechanism 55 converts the rotation motion of the input shaft 53 around the horizontal axis into a reciprocating rotation around the longitudinal axis, and the rotation conversion mechanism 71. The relay transmission shaft 72 extending in the front-rear direction from the front to the rear, and the swing arm 73 as an interlocking operation member for interlockingly connecting the relay transmission shaft 72 and the reaping device 21.

  As shown in FIG. 9, the rotation conversion mechanism 71 includes an inclined head 74 connected to the end of the input shaft 53, and an inclined head portion 74 that can rotate around the inclined axis d of the inclined head 74. An externally fitted inclined boss 75 and a yoke 76 that is formed in a substantially U shape in a side view of the body and is pivotally connected to the outer peripheral portion of the inclined boss 75 in a state of straddling the inclined boss 75 are provided.

  That is, the inclined head 74 is externally fitted and attached to the right end portion of the input shaft 53 so as to be spline-engaged, and the screw portion 77 formed at the shaft end portion of the input shaft 53 is attached to the inclined head 74. The inclined head 74 is fixed by tightening two nuts 78 to the screw portion 77 from the outer side of the inclined head 74. With this configuration, the inclined head 74 is maintained in a favorable connection state with the input shaft 53.

  In other words, the power transmitted to the input shaft 53 is also transmitted to the lateral feed auger 20, which needs to be rotated in the direction opposite to the normal rotational direction in order to eliminate clogging of crops. Yes, the input shaft 53 may be driven in a reverse rotation state. Even if it is rotated in the reverse direction in this way, the inclined head 74 is spline-engaged, and the two nuts 78 are tightened so that no loosening occurs and the connected state is maintained well. It is done.

  Further, an inclined boss 75 is rotatably fitted around the inclined head 74 so as to be rotatable around the inclined axis d, and a pair of fulcrum pins 79 provided at the outer peripheral diagonal position of the inclined boss 75 A yoke 76 is attached so as to be relatively rotatable around the axis of the fulcrum pin 79. A relay transmission shaft 72 facing in the front-rear direction is integrally connected to the back portion of the yoke 76.

  As the input shaft 53 rotates about the lateral axis, the tilt axis d of the tilt boss 75 is swung forward and backward, and the tilt boss 75 is linked to the yoke 76 via a fulcrum pin 79 and a yoke 76. The relay transmission shaft 72 is reciprocally rotated at a predetermined angle.

  As shown in FIG. 4, the relay transmission shaft 72 extends forward and downward from the rotation converting mechanism 71 along the outer surface of the right side wall 14 </ b> R as one side wall. The end portion is rotatably supported by a bearing device 80 provided on the right side wall portion 14R. A swing arm 73 is connected to a tip end portion of the relay transmission shaft 72 that protrudes from the bearing device 80 toward the front side of the machine body in a spline-fit state so as to be integrally rotatable and radially extending.

  As shown in FIGS. 10 and 11, one end side of the relay link 81 is pivotally connected to the swing end of the swing arm 73 connected to the front end of the relay transmission shaft 72, and the other end side of the relay link 81 is the cutting device 21. Is pivotally connected to the movable blade 21B. That is, the swing arm 73 and the movable blade 21B are interlocked and connected via the relay link 81, and the movable blade 21B is reciprocated to the left and right with a fixed stroke by the reciprocating rotation of the relay transmission shaft 72. . Such a configuration in which the relay transmission shaft 72 such as the swing arm 73 and the relay link 81 and the reaping device 21 are linked together corresponds to the reaping drive unit K.

  As shown in FIGS. 4 and 12, a balance weight 82 is provided on the outer peripheral portion of the relay transmission shaft 72 so as to extend along the axial direction. The balance weight 82 is provided in a state extending over the end portion on the rotation conversion mechanism 71 side and the end portion on the cutting device 21 side of the relay transmission shaft 72.

  The balance weight 82 includes a plurality of leg portions 83 extending along the radial direction of the relay transmission shaft 72 at locations spaced in the axial direction of the relay transmission shaft 72, and radially outward ends of the plurality of leg portions 83. It is the structure provided with the laterally extending part 84 which connects parts. Moreover, as the leg part 83, the intermediate part located in the intermediate part of the leg part 83A of a pair of edge part side located in the axial center direction both ends of the balance weight 82, and these leg part 83A of a pair of edge part side Leg portions 83B, and a plurality (two in the example shown in FIG. 12) of intermediate leg portions 83B at intervals along the axial direction.

  A specific configuration will be described. As shown in FIG. 12, the balance weight 82 includes two weight unit bodies 85 and a weight coupling body 86 that couples the two weight unit bodies 85 to each other. Yes.

  The weight unit body 85 includes a pair of leg portions 83 extending in the radial direction of the relay transmission shaft 72 and a connecting portion 87 that connects the radially outer side ends of the pair of leg portions 83. Two weight units 85 are provided in a state of being arranged at intervals along the axial direction of the relay transmission shaft 72. Specifically, the weight unit body 85 has a shape obtained by bending a band plate material into a substantially U-shape (square U-shape).

  A weight coupling body 86 made of a flat strip-shaped metal material that couples the coupling portions 87 of the two weight unit bodies 85 together by welding and fixing is provided. The laterally extending portion 84 is formed by the connecting portion 87 and the weight connecting body 86 of each of the two weight unit bodies 85.

  Accordingly, the balance weight 82 includes four legs 83, of which the rearmost leg 83 and the foremost leg 83 correspond to the end leg 83A, and an intermediate portion thereof. The two leg portions 83 located at the position correspond to the intermediate leg portion 83B.

  As shown in FIG. 12, the leg 83 on the rear side of the machine body of the balance weight 82 is connected to the outer periphery of the relay transmission shaft 72 and is in surface contact with the outer surface of the bottom of the yoke 76 in the rotation conversion mechanism 71. It is connected and fixed by welding in the applied state. Further, as shown in FIG. 9, the radially outer end of the relay transmission shaft 72 in the balance weight 82 (the radially outer end face of the laterally extending portion 84) is the radially outer end of the yoke 76. It is provided in a state of being positioned radially outward from the portion.

  As shown in FIG. 12, the swing arm 73 is provided in a state of being fixedly extended downward from the relay transmission shaft 72, and the balance weight 82 is fixedly extended toward the upper side of the relay transmission shaft 72. It is prepared in the state to do. With this configuration, the inertia force based on the driving of the movable blade 21B applied to the relay transmission shaft 72 can be canceled by the weight of the balance weight 82, and the vibration of the relay transmission shaft 72 accompanying the driving of the reaping device 21 can be canceled. Can be suppressed.

Next, the reel transmission mechanism 56 will be described.
As shown in FIGS. 4 and 7, a first relay shaft 88 is provided along the lateral width direction of the vehicle body in a state positioned above the input shaft 53, and further positioned above the first relay shaft 88. In this state, a second relay shaft 89 is provided along the vehicle body width direction.

  The first relay shaft 88 is supported by a bearing member 91 fixedly supported by a support member 90 fixed to the rear side portion of the right side wall portion 14 </ b> R so as to be rotatable around a laterally rotating shaft core. A first reel endless rotating chain 94 is wound around a drive sprocket 92 provided on the input shaft 53 and a driven sprocket 93 provided on the first relay shaft 84.

  The second relay shaft 89 is rotatably provided on the same axis as the fulcrum shaft 95 that rotatably supports the support arm 26, the drive sprocket 96 provided on the first relay shaft 88, and the second relay. A second reel endless rotating chain 98 is wound around the driven sprocket 97 provided on the shaft 89.

  A belt continuously variable transmission 99 is provided across the second relay shaft 89 and the drive shaft 27 of the rotary reel 22. A transmission belt 102 for speed change is wound around a driving pulley 100 provided on the second relay shaft 89 and a driven pulley 101 provided on the driving shaft 27. Although not described in detail, the driving pulley 100 is configured as a split pulley type, and the driven pulley 101 is configured as a fixed pulley having a constant belt winding diameter to change the transmission ratio (transmission ratio). A belt continuously variable transmission 99 capable of supporting the above is configured.

  The transmission mechanism provided at one side of the cutting unit 11 as described above, that is, the lateral outer side of the lower portion of the transmission mechanism 55 for the cutting blade, the transmission mechanism 54 for the auger, and the transmission mechanism 56 for the reel. The portion is covered with a lower cover body 103 as a decorative cover, and the laterally outer portion of the belt continuously variable transmission 94 located on the upper side in the reel transmission mechanism 56 is covered with an upper cover body 104 as a decorative cover. It is covered (see FIG. 1).

As shown in FIGS. 4 and 10 to 12, the frame is located on the outer side portion of the right side wall portion 14 </ b> R in the cutting portion 11 and covers the lateral outer side portion and the lower side portion of the cutting drive unit K. A body 105 is provided.
The frame body 105 is composed of a plate material bent in a middle dent shape, and is formed in a state in which respective portions as will be described later are continuously connected by the bent plate material. The frame body 105 is formed of a thick metal plate material having high rigidity.

  The frame body 105 is formed with an outermost projecting portion 106 which is a vertically narrow surface in the front-rear direction in a state of projecting most laterally outward at a position located on the outer side of the cutting drive unit K. Has been. Then, in a state of being connected to the front side of the airframe of the most projecting portion 106, a front side inclination guide portion 107 which is a vertical surface extending in the vertical direction is formed in an inclined posture located on the front side of the airframe in plan view. Has been. Further, in a state of being connected to the rear side of the airframe of the most projecting portion 106, a rear side inclination guide portion 108 which is a vertical posture extending in the vertical direction is formed in an inclined posture that is located closer to the rear side of the airframe in plan view. ing.

  And as shown in FIG. 4, the bottom face part 109 is formed in the lowermost part of the frame body 105 in the state which covers the lower part of the cutting drive part K. As shown in FIG. The bottom surface portion 109 is formed by a rear side bottom surface portion 109a located on the rear side of the body and a front side bottom surface portion 109b connected to the front portion of the rear side bottom surface portion 109a. The front side bottom surface portion 109b is provided so as to be bent in a substantially L shape in a side view so as to be in a front rising inclination posture with respect to the rear side bottom surface portion 109a.

  Further, as shown in FIG. 10, a lower inclined guide portion 110 in an inclined posture is formed so that the lower side in the front view of the machine body is located on the inward side of the machine body so as to continue from the lower end part of the most protruding part 106 to the bottom surface part 109. Has been. As shown in FIG. 4, the lower side inclination guide part 110 is formed in a state of being connected to the lower end parts of the front side inclination guide part 107 and the rear side inclination guide part 108, and is formed as a substantially triangular inclined surface. ing.

  As described above, the frame body 105 is composed of a plate material bent in a middle recess shape, and includes the most protruding portion 106, the front side inclined guide portion 107, the rear side inclined guide portion 108, the rear side bottom surface portion 109a, The front side bottom surface portion 109b and the like are each formed in a flat plate shape, and are shaped so as to be bent in a substantially L shape.

  In this frame body 105, the front side mounting portion 111 formed at the front side end portion of the bottom surface portion 109 and the rear side mounting portion 112 formed at the rear side end portion are bolted to the right side wall portion 14R. It is fixed by.

  As shown in FIG. 11, a guide rod 19 provided on the laterally outer side of the right side wall portion 14R includes an inclined guide portion 19A extending from the divider toward the laterally outward rear side, and the inclined guide portion 19A. A laterally connecting portion 19B extending from the rear end portion toward the inboard side and having the inboard end portion fixed to the right side wall portion 14 is configured.

Specifically, the guide rod 19 is formed as an integral shape in which a circular pipe member is bent into a substantially L shape, and the inclined guide portion 19A and the laterally connecting portion 19B are connected in series, and one end portion and the other end portion thereof are formed. Each is attached and fixed to the side wall portion 14R. By configuring the guide rod 19 in this way, for example, the strength of the guide rod 19 is higher than that formed in a cantilever shape, and the guide rod 19 may come into contact with an external object other than the stem rod such as a rod. Will be difficult to break.
An inner guide rod 113 that guides the cutting target stem to the inside of the cutting work area is provided on the inner side in the lateral width direction of the side wall portion 14R.

  As shown in FIG. 11, the right guide rod 19 and the frame body 105 are provided in a state in which the positions of the lateral outer side end portions thereof are the same in a front view of the body. As described above, the strength of the guide rod 19 is increased, and the guide rod 19 can be used as a member for protecting the cutting drive unit K similarly to the frame body 105, and the cutting drive unit K is protected. The function to perform can be improved.

  The right guide rod 19 and the frame body 105 are provided so as to partially overlap in the front-rear direction. That is, as shown in FIG. 4, both are arranged in a state where the rear end side portion of the guide rod 19 and the front end side portion of the frame body 105 partially overlap in the front-rear direction. Specifically, the guide rod 19 is positioned on the upper side and the frame body 105 is positioned on the lower side so that they overlap in a side view. By configuring in this way, it can be arranged compactly in the front-rear direction, and both have the function of protecting against contact with external objects at the overlapping portion, so the function of protecting the cutting drive unit K is enhanced. be able to.

  As shown in FIGS. 1 and 2, the frame body 105 is provided in a state of projecting laterally outward from the laterally outward end position of the lower cover body 103. The body 103 has a function of protecting the body 103 from being damaged by contact with an external object.

[Another embodiment]
Hereinafter, other embodiments are listed.

(1) In the above-described embodiment, the guide rod 19 and the frame body 105 are provided in a state where their laterally outer end portions are at the same position in front of the body, and the guide rod 19 and the frame body 105 are provided. However, the guide rod 19 and the frame body 105 may have different front end portions in the front-rear direction. It may be implemented with different arrangement configurations, such as disposing them apart.

(2) In the above embodiment, the guide rod 19 provided on the right side wall portion 14R is provided with the inclined guide portion 19A and the laterally connecting portion 19B. However, instead of such a configuration, the guide rod 19 is provided. It is good also as a structure which is extended in the cantilever shape toward diagonally back linearly.

(3) In the above embodiment, the frame body 105 is provided on the right side wall part 14R as one side wall part, but the left side wall part 14L may be provided with the frame body 105.

(4) In the above-described embodiment, the frame body 105 is configured by a plate material bent into an indented shape, specifically, as described above, the frame body 105 is formed by bending the plate material into a substantially L shape, Although what forms each part, such as the most protruding part 106, the front side inclination guide part 107, and the rear side inclination guide part 108, was shown, as a frame body, not only such a structure but the following structure may be comprised. Good.
Instead of the plate material bent into a substantially L shape, the plate may be bent in a smooth arc shape.
In addition, instead of the plate material bent into a concave shape, for example, a member formed by bending a rod-like member or a member formed in a lattice shape may be used. In short, what is necessary is just to have a function of covering at least the laterally outer side portion and the lower side portion of the cutting drive unit K and protecting the cutting drive unit K.

(5) In the above embodiment, the ordinary combine is exemplified as the combine. However, the present invention can also be applied to the self-decomposing combine.

  INDUSTRIAL APPLICABILITY The present invention can be applied to a combine provided with a cutting device for cutting a planted stalk on a cutting unit at the front of the machine body such as a normal combine or a self-removing combine.

DESCRIPTION OF SYMBOLS 10 Driving part 11 Cutting part 14R, 14L Side wall part 18 Divider 19 Guide rod 19A Inclination guide part 19B Lateral connection part 21 Cutting device 55 Transmission mechanism 103 Cosmetic cover 105 Frame body 106 Most projecting part 107 Front side inclination guide part 108 Back side inclination guide Part 109 Bottom face part 110 Lower inclination guide part K Cutting drive part

Claims (9)

A reaping device for reaping the planted stems in the reaping work area defined by the side walls on the left and right sides of the reaping part;
A reaping drive unit that is located on the laterally outer side of one of the left and right side wall parts, and that drives the reaping device with power transmitted from the driving unit;
The combine provided with the frame body which is located in the lateral outer side in said one side wall part, and covers the lateral outward side location and the downward side location of the said cutting drive part.   The frame body has an outermost protruding portion that protrudes laterally outwardly, and a front-side inclination guide that is formed on the front side of the body of the outermost protrusion and is inclined toward the front side of the body in plan view. The combine of Claim 1 with which the part is provided.   The frame body has an outermost protruding portion that protrudes laterally outward, and a rearward inclined guide that is formed on the rear side of the outermost portion of the outermost protruding portion and is positioned closer to the inner side of the aircraft in plan view. The combine of Claim 1 or 2 with which the part is provided.   The frame body has a bottom surface portion that covers a lower side portion of the cutting drive unit, and an inclined posture that is located closer to the body side toward the lower side in a front view of the body so as to continue from the lower end portion of the most protruding portion to the bottom surface portion. The combine of Claim 2 or 3 provided with the lower side inclination guide part. A divider for weeding a planted stem into a cutting target stem and a non-cutting target stem, respectively, on each of the front end portions of the left and right side walls, and a non-cutting target stem located on the front side of the frame body A guide rod that guides the rod toward the laterally outer side of the cutting work area,
An inclination guide portion extending in an inclined state from the divider to a laterally outward rear side from the divider, and extending from a rear end portion of the inclination guide portion toward an inward side of the vehicle body, provided on the one side wall portion. The combine according to any one of claims 1 to 4, further comprising a laterally connecting portion in which an inward side end portion is fixed to the one side wall portion.   The combine according to claim 5, wherein the guide rod and the frame body are provided in a state in which their laterally outer end portions are in the same position when viewed from the front of the machine body.   The combine of Claim 5 or 6 with which the said guide rod and the said frame body are provided in the state which overlaps partially along the front-back direction.   The combine of Claim 7 with which the said guide rod is provided in the state which overlaps along the front-back direction in the state located in the upper side rather than the said frame body. A decorative cover that covers the laterally outer side of the transmission mechanism that transmits power to the cutting drive unit and the cutting drive unit is provided at the outer side portion of the one side wall portion,
The combine according to any one of claims 1 to 8, wherein the frame body is provided in a state of covering a laterally outer side portion of a front portion of the decorative cover.

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