JP2011200188A - Combine harvester - Google Patents

Abstract

Provided is a combine that can improve the cutting performance by eliminating unevenness of uncut residue due to a sub-cutting device and suppressing the sub-cutting device from coming into contact with the ridge.
A sub-cutting device 14 acting on a planted culm at a position lower than a main cutting device for cutting the planted cereal is supported by a plurality of lifting frames so as to be movable up and down. Base side frame 13d extending from one side lifting frame 13B located on the boarding driving part side in the direction toward the front of the body on the lateral outer side of one side traveling device 1 located on the boarding driving part side And a distal end side frame portion 13e extending from the distal end of the proximal end side frame portion 13d to the front side of the traveling device 1 on one side so as to be positioned on the center side in the lateral direction of the vehicle body from the proximal end side frame portion 13d. The auxiliary cutting device 14 is supported on the traveling machine body 2 in a state where the end portion position on the boarding operation unit side is the same position as the lateral outer side end portion of the traveling device 1 on one side.
[Selection] Figure 3

Description

  The present invention includes a main cutting device that cuts a planted culm on a traveling machine body that includes a pair of left and right traveling devices and a boarding operation unit, and a sub that operates on the planted culm at a position lower than the main cutting device. The present invention relates to a combine equipped with a cutting device that can be moved up and down.

The reason why the main cutting device and the auxiliary cutting device are provided is that the main cutting device cuts the granulation portion in order to put only the granulation portion on the tip side of the planted cereal into the threshing device, and the granulation This is because the stem part is cut by the auxiliary cutting device and released onto the field scene in order not to put the stem portion below the head into the threshing device.
And conventionally, the main cutting device and the sub cutting device were attached to the cutting part supported by the traveling machine body so that it can be moved up and down (see, for example, Patent Document 1).

JP 2004-97079 A (paragraph number [0021], FIG. 2-3)

  In the above conventional configuration, the main cutting device and the sub cutting device are attached to the cutting unit, respectively, and when the cutting unit is moved up and down with respect to the traveling machine body in order to adjust the cutting height by the main cutting device, The sub-cutting device moves up and down as the mowing unit moves up and down. As a result, although the grain cutting part can be cut only by the main cutting device regardless of the difference in the length of the planted culm, the auxiliary cutting device maintains a constant vertical distance from the main cutting device. Because it moves up and down, regardless of the culm length of the planted cereal, the secondary cutting device cuts a part lower than the cutting height of the main cutting device by a certain interval. If it is long, it may be cut short if it is short.

  By the way, in order to eliminate the disadvantages as described above, an actuator for changing and adjusting the relative height of the secondary cutting device with respect to the cutting portion is provided, and a detection sensor for detecting the ground height of the cutting portion and a secondary cutting device for the cutting portion. Although it is conceivable to have a control means for controlling the actuator so that the cutting height by the sub-cutting device is constant based on detection information of a sensor or the like that detects the relative height of this, such a configuration Then, because the height control of the secondary cutting device is performed by controlling the relative position with the main cutting device, depending on the unevenness situation of the actual farm scene etc. There is also. That is, even in this case, there is a possibility that unevenness may be generated in the uncut portion.

  In other words, conventionally, there is a possibility that uneven cutting may occur in the management of the field, so that it may be judged that the cutting operation is insufficient, and there is room for improvement in the form of the cutting operation.

  The object of the present invention is to eliminate unevenness of uncut residue by adding a device to the support structure for the auxiliary cutting device, and by adding a device to the shape of the lifting frame introduced therefor, the auxiliary cutting device It is in the point which provides the combine which can aim at the improvement of the cutting performance by suppressing that it contacts a cocoon.

  The combine according to the present invention includes a main cutting device for cutting a planted culm on a traveling machine body provided with a pair of left and right traveling devices and a boarding operation unit, and the planted culm at a position lower than the main cutting device. The auxiliary cutting device is provided so as to be movable up and down, and the first characteristic configuration is that the auxiliary cutting device is arranged in front of the traveling vehicle body with a space in the transverse direction of the traveling vehicle body. A plurality of lifting frames that are supported so as to be movable up and down with respect to the traveling machine body, and one of the plurality of lifting frames that is located on the boarding operation portion side in the lateral direction of the traveling machine body is a traveling machine body A base end side frame portion extending toward the front of the airframe on the lateral outer side of the one side traveling device located on the boarding operation portion side in the lateral width direction, and the one end side from the tip end of the base end side frame portion On the front side of the traveling device And a distal end side frame portion extending so as to be positioned at the center side in the lateral direction of the vehicle body from the base end side frame portion. The auxiliary cutting device is supported with respect to the traveling machine body in the same position as the laterally outer end of the one traveling device.

According to the first characteristic configuration, in order to support the auxiliary cutting device on the traveling machine body separately from the main cutting device so as to be movable up and down, the auxiliary cutting device is arranged in a state spaced apart from the traveling machine body in the lateral direction of the traveling machine body. Since the lift frame is supported by a plurality of lifting frames extending forward, it can be moved up and down, so that even if the main cutting device changes the cutting height, the auxiliary cutting device has a certain height from the field surface. Can be maintained.
As a result, even if the main cutting device changes the cutting height according to the height of the head portion of the cereal, the height of the stubble can be maintained at a constant height from the field surface, and unevenness of the uncut portion can be reduced. It can be lost.

  By the way, at the start of work where the entire field is an uncut grain culm, for example, as shown in FIG. 24, the cutting of the outer peripheral part of the field is performed with the end on the boarding operation unit 6 side of the traveling body 2 close to the culm. In this case, only the grained portion on the tip side of the planted cereal is cut with the main cutting device 9 and the stock portion is cut with the auxiliary cutting device 14 and released onto the field scene. When the cutting operation is performed in the work mode, the sub-cutting device 14 is positioned below the cutting unit, so that an operator operating the boarding operation unit 6 visually confirms the work state of the sub-cutting device 14. If the auxiliary cutting device 14 protrudes laterally outward from the lateral outer side end of the traveling device on the boarding operation unit 6 side, the auxiliary cutting device 14 comes into contact with the field and breaks. There is a risk that.

  Therefore, in the first characteristic configuration, the one-side lifting frame has a base-side frame portion extending toward the front of the body on the lateral outer side of the one-side traveling device, and the base-side frame portion The front side of the traveling device on the boarding operation unit side from the front end of the vehicle is extended so that the front end side frame portion is positioned on the center side in the lateral direction of the vehicle body from the base end side frame unit, and the boarding operation unit in the auxiliary cutting device The sub-cutting device is supported by the traveling machine body in a state in which the end position on the side is the same position as the laterally outer side edge part of the traveling device on the boarding operation unit side in the longitudinal direction of the traveling machine body.

  In this way, by devising the shape of the one-side lifting frame, the one-side lifting frame can avoid the secondary cutting device from coming into contact with the eaves while avoiding interference with the traveling device on the boarding operation unit side. It becomes.

  As a result, at the start of work where all of the field is uncut grain culm, when performing cutting work on the outer periphery of the field, the work is performed with the traveling machine body close to the culm. It is possible to prevent the cutting device from coming into contact with the ridge and being damaged.

  By the way, in order to avoid the auxiliary cutting device from coming into contact with the rod, the end position on the boarding operation unit side of the auxiliary cutting device is larger than the lateral outer side end of the traveling device on the boarding operation unit side. Although it is conceivable to approach the central side in the width direction, in this configuration, after the cutting operation, cereal grains that have not been cut by the auxiliary cutting device remain, resulting in uneven cutting.

  In order to avoid interference with the traveling device on one side, the one side lifting frame is extended linearly toward the front of the body at a position closer to the center side in the lateral direction of the body than the traveling device. Although it can be considered to be configured, in such a configuration, the end portion on the boarding operation portion side of the sub-cutting device is supported in a cantilever shape, and sufficient support strength cannot be obtained. According to the first characteristic configuration, it is possible to support the end portion of the sub-cutting device on the boarding operation unit side with the lifting frame so that the sub-cutting device has sufficient support strength. This makes it easier to avoid damage due to contact with the bag.

  Therefore, according to the first characteristic configuration, by adding a device to the support structure for the sub-cutting device so as to eliminate unevenness of uncut residue, and by adding a device to the shape of the lifting frame introduced for that purpose Thus, it has become possible to provide a combine that can prevent the auxiliary cutting device from coming into contact with the ridge and improve the cutting performance.

  According to a second characteristic configuration of the present invention, in addition to the first characteristic configuration, the distal end side frame portion faces the front side of the one side traveling device from the distal end of the proximal end side frame portion toward the center side in the body lateral width direction. And a lateral frame portion extending in the lateral direction and a longitudinal frame portion extending from the front end of the lateral frame portion toward the front of the body.

  According to the second characteristic configuration, the front end side frame portion extends from the front end of the base end side frame portion toward the front side of the fuselage from the front end of the horizontal frame portion extending in the horizontal direction toward the center side in the horizontal direction of the fuselage. Since the auxiliary cutting device is supported by the front-rear frame portion, the front-rear frame portion that supports the sub-cutting device is the end portion on the boarding operation part side of the auxiliary cutting device in the longitudinal direction of the traveling machine body It becomes a position substantially the same as the position, and it can be avoided that this front-rear frame portion contacts the heel.

  Therefore, according to the second characteristic configuration, it is possible to avoid not only the auxiliary cutting device but also the one-side lifting frame coming into contact with the heel and being damaged.

  The third characteristic configuration of the present invention is that, in addition to the second characteristic configuration, the front-rear frame portion is configured to extend downward in the front of the fuselage.

  According to the third characteristic configuration, the front-rear frame portion extends toward the lower front of the aircraft, so even if the auxiliary cutting device moves up and down with respect to the traveling aircraft because the cutting height changes, The base end side frame portion and the sideways frame portion can be provided at a higher position that does not interfere with the traveling device on one side.

  Therefore, according to the third characteristic configuration, it is possible to support the sub-cutting device so as to be movable up and down while avoiding the one-side lifting frame from interfering with the traveling device.

  In addition to any one of the first to third feature configurations, the fourth feature configuration of the present invention is the other side of the plurality of lifting frames that is located on the opposite side to the boarding operation part side in the traveling body lateral width direction. The elevating frame is composed of a single frame portion extending linearly obliquely downward, and a transmission mechanism for transmitting a driving force to the auxiliary cutting device is provided in the other elevating frame.

According to the fourth characteristic configuration, on the opposite side of the boarding operation unit, there is no possibility that the auxiliary cutting device contacts the ridge as in the boarding operation unit side, and it is necessary to match the end of the auxiliary cutting device with the end of the traveling device. Therefore, the other lifting frame need not be bent like the one lifting frame.
Therefore, according to the fourth feature configuration, the other side lifting frame is configured with a single frame portion that extends obliquely downward in a straight line, so that the manufacturing process of the other side lifting frame is not complicated and cost is also low. It can be produced in an advantageous state.

  And since one side raising / lowering frame is comprised by the single flame | frame part extended straightly diagonally downward, when the transmission mechanism which transmits the driving force with respect to a sub cutting device is provided in such one side raising / lowering frame Compared with the structure provided in the bent frame, the support structure of the transmission mechanism can be simplified.

  Therefore, according to the fourth characteristic configuration, the structure of the other side lifting frame and the support structure of the transmission mechanism can be simplified, and the cost can be reduced.

It is a whole side view of a combine. It is a whole top view of a combine. It is a front view which shows a sub cutting device, an interlocking mechanism, a boarding operation part, and a conveyance mechanism. It is a top view which shows a sub cutting device, an interlocking mechanism, and a conveyance mechanism. It is a left view which shows the drive structure of a left raising / lowering flame | frame and a sub cutting device. It is a left view which shows the biasing means provided between the center side raising / lowering frame and its center side raising / lowering frame, and a traveling body. It is a right view which shows a right raising / lowering flame | frame. It is a top view which shows three raising / lowering frames and a sub cutting device. It is a top view which shows a part of sub cutting device. It is the left view which longitudinally cut the sub cutting device. It is a perspective view which shows a bag. It is a cross-sectional top view of the cover body for raising / lowering frames. It is a vertical front view which shows the eccentric drive unit with respect to a sub cutting device. It is a partially notched side view which shows the eccentric drive unit with respect to a sub cutting device. It is a left view which shows a linkage mechanism. It is a front view which shows a linkage mechanism. It is sectional drawing which shows the engagement state of a guide member and a guide shaft. It is operation | movement explanatory drawing of a linkage mechanism. It is a whole side view of a combine when a linkage mechanism is a linkage state. It is a side view of a boarding operation part. It is a front view which shows the support structure of a sunshade cover. It is a top view which shows the support structure of a sunshade cover. It is a principal part side view which shows the support structure of a sunshade cover. It is a top view of the field in a cutting work state.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows an overall side view of a combine. This combine harvests a harvesting culm at the front of a traveling machine body 2 that is driven by a pair of left and right crawler traveling devices 1 as traveling devices. The cutting and conveying device 3 that conveys backward is connected to the left and right first axis X1 so as to be swingable up and down, and the threshing process is performed on the harvested cereal meal from the cutting and conveying device 3, and the threshing is performed. The threshing device 4 that performs a sorting process on the processed product obtained by the processing, the grain tank 5 that stores the grain from the threshing device 4, and the like are mounted on the traveling machine body 2, and the grain tank in the traveling machine body 2 The boarding operation part 6 is formed in the front part of 5, and it is comprised by the whole straw throwing type | mold which used rice, wheat, etc. as a harvesting target grain straw. A sunshade cover 72 covering the upper part of the boarding operation part 6 is provided so as to be switchable between an operation state located above the boarding operation part 6 and a retracted state retracted downward.

Next, a support structure for the awning cover 72 will be described.
As shown in FIGS. 20 to 22, a sunshade cover 72 is provided on a machine body side frame 70 provided on the machine body front side of the grain tank 5 provided on the rear side of the boarding operation unit 6 via a pair of left and right support arms 71. The pair of left and right support arms 71 can be switched between an action posture corresponding to the action state and a storage attitude corresponding to the retracted state, and the action posture and the storage attitude are Each of them is provided with a position holding mechanism D capable of holding the position. Incidentally, the machine body side frame 70 is configured by connecting a plate-like upper frame 73 and a plate-like lower frame 74 with a pair of left and right rectangular tube frames 75 that are long in the vertical direction.

  22 and FIG. 23, a long hole 76 extending in the longitudinal direction is formed at the base end portion of each of the left and right support arms 71, and the long hole 76 and the upper frame 73 are fixed. A tightening bolt with an operating handle (hereinafter referred to as a jack bolt) 79 is inserted through the insertion hole 78 formed in the substantially U-shaped bracket 77 in plan view, and the jack bolt 79 is loosened. In this state, the support arm 71 can be moved relative to the machine body side frame 70 over the longitudinal direction of the long hole 76.

  Then, as shown in FIG. 23A, the support arm 71 is lowered relative to the machine body side frame 70, and the jack bolt 79 is tightened with the jack bolt 79 positioned on the upper end side of the long hole 76. Thus, the support arm 71 can be held in the working posture, and the support arm 71 is raised relative to the machine body side frame 70 as shown in FIG. The support arm 71 can be held in the retracted position by tightening the jack bolt 79 in a state where the support arm 71 is positioned on the lower end side of 76.

When the locking member 80 is fixed to the lowermost position of the side surface of the support arm 71 on the side of the machine body, and the locking member 80 is received by the receiving portion 84 fixed to the bracket 77, and is in the working posture. The support arm 71 is configured to be restricted from swinging downward.
In the action posture, the receiving pin 81 inserted and attached so as to be inserted through the rectangular tube frame 75 and the bracket 77 is brought into contact engagement with the locking member 80 to restrict the support arm 71 from moving upward. It is comprised so that it may do. Further, the bracket 77 is provided with a receiving restricting portion 82 for restricting swinging of the support arm 71 toward the rear side of the machine body when in the action posture.

  That is, in addition to tightening the jack bolt 79, the locking member 80 comes into contact with the receiving portion 84 and the support arm 71 swings forward, in other words, the awning cover 72 moves downward. In addition, the support arm 71 swings to the rear side of the airframe at the upper part of the receiving restricting portion 82 and the receiving portion 84, in other words, restricting the awning cover 72 from moving upward. Thus, the sunshade cover 72 can be reliably held in the operating state.

  The receiving pin 81 includes a receiving action portion 81a and a grip operation portion 81b by bending a bar material into a substantially L shape. In the free state, the grip operation portion 81b faces downward. The contact is restricted by the contact restricting tool 83 provided on the frame 70, and can be removed by rotating to a position where the contact restricting tool 83 does not act by manual operation.

  From the state in which the support arm 71 is in the action posture indicated by the solid line in FIG. 20, the receiving pin 81 is removed, the jack bolt 79 is loosened, and the support arm 71 is switched to the storage posture indicated by the phantom line in FIG. As shown in FIG. 23 (b), the locking member 80 is received at the upper part of the receiving portion 84, and the support arm 71 is further restrained from swinging further forward. Then, by tightening the jack bolt 79 in this retracted posture, the awning cover 72 can be held in the retracted state.

  With the configuration as described above, the position holding mechanism D that can hold the pair of left and right support arms 71 in the acting posture and the retracting posture is configured. Incidentally, the reason why the awning cover 72 is switched to the retracted state is to prevent the awning cover 72 from being damaged by a strong wind when the combine is transported by a transport vehicle such as a truck.

  As shown in FIGS. 1 and 2, the cutting and conveying apparatus 3 is configured such that the dividers 7 provided at the left and right ends of the front part separate the reaping target culm from the non reaping target culm as the traveling machine body travels. The rotary reel 8 disposed above the front part of the cutting and conveying device 3 rakes the cropping target culm separated by the left and right dividers 7 backward, and is mounted on the bottom of the cutting and conveying device 3. The main cutting device 9 having a shape cuts a predetermined portion of the cropping target culm, and the auger 10 provided behind the main cutting device 9 converts the chopping target culm after cutting by the main cutting device 9 to a predetermined portion in the left-right direction. The transport mechanism 11 serving as a transport device extending from the predetermined position to the front upper part of the threshing device 4 directs the harvested culm from the auger 10 toward the threshing device 4. Configure to transport Then, the hydraulic cylinder 12 installed over the transport mechanism 11 and the traveling machine body 2 is swung up and down about the first axial center X1 in the left-right direction, and the main cutting device for the harvested culm by the up-and-down swing. The cutting height adjustment for changing the height position of 9 can be performed.

  Further, on the lower side of the cutting and conveying apparatus 3, a sub-cutting device 14 composed of a clipper type cutting device that acts on the planted cereal at a position lower than the main cutting device 9 is swingably mounted on the traveling machine body 2. The three elevating frames 13A, 13B, and 13C are provided so as to be supported.

Next, the support structure of the auxiliary cutting device 14 will be described.
As shown in FIG. 2 to FIG. 4, a horizontal frame 16 made of a square pipe facing left and right is installed on the upper surface of the front end of the traveling machine body 2. The horizontal frame 16 is provided separately by a left frame portion 16A located on the left side with the mission case 24 in between and a right frame portion 16B located on the right side of the mission case 24, and two frames in the vicinity of both ends of the left frame portion 16A. The bearing portions 17 are provided at three locations of the location and the right end of the right frame portion 16B.
As shown in FIGS. 6 and 7, the bearing portion 17 includes a leg portion 17A attached to the left and right frame portions 16A and 16B, and a boss portion 17B integrally formed with the leg portion 17A. A cylindrical shaft 18 is mounted so as to be able to swing through this.

  A plate-shaped receiving bracket 16a is attached to a mounting portion of the sideways frame 16 with respect to the bearing portion 17, and the leg portion 17A of the bearing portion 17 is fastened and fixed to the receiving bracket 16a with a bolt 15 so that the bearing portion 17 is turned sideways. The frame 16 is configured to be detachable.

  The cylindrical shaft 18 in each of the three bearing portions 17 protrudes laterally along the second axis X2 from the boss portion 17B of the bearing portion 17, and the lifting frames 13A, 13B, and 13C are connected and fixed to the protruding portions, respectively. It is. The center lifting frame 13A, the right lifting frame 13B, and the left lifting frame 13C supported by the bearing portion 17 at three locations in the left and right direction extend toward the front of the machine, and the center lifting frame 13A, the right lifting frame 13B, and the left lifting The frame 13C is configured to be swingable.

The structure of the center side lifting frame 13A located at the approximate center of the traveling body width direction among the three lifting frames 13A, 13B, 13C will be described.
The central elevating frame 13A is integrally connected to the boss portion 17B, is located between the cutting and conveying device 3 and the axle case 25 positioned below the linear frame and extends linearly downward from the boss portion 17B. A portion 13 a and a curved frame portion 13 b that extends downward from the front end portion of the axle case 25 from the front end portion of the linear frame portion 13 a are configured.

  That is, as shown in FIG. 6, the central elevating frame 13 </ b> A is positioned between the transport mechanism 11 and the axle case 25 positioned below the transport mechanism 11, and extends linearly. A curved frame portion 13b that extends downward from the front end portion of the linear frame portion 13a in a curved manner on the front side of the axle case 25 is configured in a state in which a single frame material is formed by bending. is there. Further, the central lifting frame 13A includes a forward frame portion 13c that extends forward from the lower end of the curved frame portion 13b.

  In other words, the straight frame portion 13a and the curved frame portion 13b are formed by bending a single frame material, and the straight frame portion 13a and the curved frame portion 13b are formed. Are connected in a smoothly curved state rather than bent. For example, even if the auxiliary cutting device 14 contacts the heel and a force toward the rear side of the body acts, the internal stress is locally It is difficult to damage because it does not concentrate.

  A receiving frame 49 is provided on the upper surface of the linear frame portion 13a, and the receiving frame 49 abuts on the lower surface of the transport case 11A of the transport mechanism 11, so that the auxiliary cutting device 14 and the bottom plate of the auger 10 are connected. Preventing contact.

  Of the three lifting frames 13A, 13B, and 13C, the right lifting frame 13B as the one lifting frame located on the right side in the traveling machine lateral width direction, the one side running located on the boarding operation part side in the traveling machine lateral width direction. Device, that is, on the lateral outer side of the right traveling device 1, a base end side frame portion 13 d extending toward the front of the body, and a front end of the right traveling device 1 from the distal end of the base end side frame portion 13 d. A distal end side frame portion 13e extending from the proximal end side frame portion 13d so as to be positioned on the center side in the lateral direction of the vehicle body is provided.

  The distal side frame portion 13e includes a lateral frame portion 13e1 extending laterally from the distal end of the proximal end side frame portion 13d toward the front side of the right traveling device 1 toward the center in the lateral direction of the vehicle body, and the lateral frame. A front-rear frame portion 13e2 extending from the tip of the portion 13e1 toward the lower front of the body is provided.

  In addition, as shown in FIGS. 3, 7 and 8, the right elevating frame 13 </ b> B includes a base end side frame portion 13 d extending from the right outer side portion of the right traveling device 1 toward the front of the body, A lateral frame portion 13e1 extending from the distal end of the base end side frame portion 13d to the front outer side portion of the right traveling device 1 toward the center side in the lateral direction of the vehicle body, and from the distal end of the lateral frame portion 13e1 toward the front of the vehicle body. It is comprised with the front-back direction flame | frame part 13e2 extended.

  That is, the right elevating frame 13B is bent in a crank shape in a plan view, and by bending in this way, the right end portion of the auxiliary cutting device 14 in the lateral direction of the traveling machine body is on the right side in the longitudinal direction of the traveling machine body 2. The sub-cutting device 14 is supported with respect to the traveling machine body 2 in the same position as the right end portion of the traveling device 1. By configuring in this way, for example, as shown in FIG. 24, when performing a cutting operation on the outer peripheral portion of the farm field in a state where the end portion on the boarding operation unit side of the traveling machine body 2 is close to the ridge, the auxiliary cutting device It is made easy to avoid that 14 contacts the heel side ground.

  Specifically, as shown in FIGS. 2 and 3, the right end of the auxiliary cutting device 14 in the lateral direction of the traveling machine body is the position of the right end of the traveling apparatus 1 on the right side when the traveling machine body 2 is viewed in the front-rear direction. It is substantially the same, and is a position slightly closer to the center side in the lateral direction of the traveling machine body than the position of the right end portion of the right traveling device 1. The right divider 7 is slightly closer to the outer side in the lateral width direction than the position of the right end of the right traveling device 1. By comprising in this way, it can avoid that the auxiliary cutting device 14 contacts the ground of the heel side.

  The left end portion of the auxiliary cutting device 14 in the lateral width direction of the traveling machine body is configured to be larger than the position of the left end portion of the traveling apparatus 1 on the left side and closer to the outer side in the lateral direction of the aircraft body. By configuring in this way, it is possible to avoid the cedar that has not been cut by the auxiliary cutting device 14 being stepped on by the left traveling device 1.

  Of the three lifting frames 13A, 13B, and 13C, the left lifting frame 13C as one lifting frame located on the left side in the lateral direction of the traveling machine body is a single frame portion extending linearly obliquely downward. It consists of

  And the urging means A which urges | biases the sub cutting device 14 upward is provided in the state which acts on the linear frame part 13a in 13 A of center side raising / lowering frames.

As shown in FIG. 6, the urging means A includes a compression coil spring 19, a support bolt shaft 20 positioned at the axial position of the compression coil spring 19, a holder 21 screwed into the lower end of the support bolt shaft 20, and the compression coil spring 19. The upper and lower receiving disks 22A and 22B for receiving the upper and lower ends of the upper and lower ends.
An angle-shaped receiving frame 23 that supports the lower receiving disk 22B extends forward from the front end frame 2A of the traveling machine body 2 in the vertical orientation, and the front end portion of the receiving frame 23 extends from the mission case 24 to the left and right crawler type. It is supported by an axle case 25 that extends toward the drive sprocket 1 </ b> A of the traveling device 1.

  The receiving disk 22B is placed on the receiving frame 23, and a holder 21 that is externally fitted to the lower end of the support bolt shaft 20 is held in the axial position of the receiving disk 22B. The support bolt shaft 20 supported by the lower receiving disk 22B via the holder 21 extends upward toward the central lifting frame 13A, and the upper receiving disk 22A is mounted at the extended upper end position.

A dish-shaped receiving device 26 is attached to the lower surface of the central lifting frame 13A, and an adjusting bolt 27 is attached to the receiving device 26. The lower end bolt head 27 </ b> A of the adjustment bolt 27 is brought into contact with the upper end bolt head 20 </ b> A of the support bolt shaft 20, and the center side lifting frame 13 </ b> A is pushed up and biased by the compression coil spring 19 described above. By adjusting the adjusting bolt 27 to move up and down in the vertical direction with respect to the receiving member 26, the position of contact with the upper receiving disk 22A can be adjusted, and the pushing-up biasing force of the compression coil spring 19 can be adjusted.
When the three bearing portions 17 are removed from the lateral frame 16, the entire assembly including the three lifting frames 13A, 13B, 13C and the auxiliary cutting device 14 can be removed together with the bearing portion 17, and can be attached again. It is.

  The eccentric drive unit C for driving the auxiliary cutting device 14 is supported by the bearing portion 17 located on the left side, and the drive rod shaft 44, the bearing block 46, and the swing drive arm 47 are attached to the left lifting frame 13C.

  Next, the structure of the auxiliary cutting device 14 will be described. As shown in FIGS. 5 to 10, the sub-cutting device 14 includes an angle-shaped base 29 that is attached and fixed back to back on a connecting frame 15 that extends across the body width direction, and a receiving blade 30 that is attached to the base 29. And a movable blade 31 supported by the receiving blade 30, a knife bar 32 for driving the movable blade 31, and a knife clip 33 for holding the movable blade 31.

  A hook 48 is attached to the downward surface of the connecting frame 15 so as to project later, and the sub-cutting device 14 can easily follow the unevenness of the cutting surface. The hooks 48 are provided at three positions in the lateral direction of the connecting frame 15 and are provided below the elevating frames 13A, 13B, and 13C.

  As shown in FIGS. 9 and 10, the movable blade 31 of the sub-cutting device 14 has a cereal cross feed member for feeding the cut stalk to one side in the width direction of the machine body in a state of reciprocating integrally with the movable blade 31. 34 is attached. This grain straw transverse feed member 34 is connected to the movable blade 31 with a bolt in an oblique posture in which the long plate-like body in the lateral width direction of the machine body is positioned upward toward the rear side, and reciprocally moves integrally with the movable blade 31. It is provided in the state to do. The corn straw horizontal feed member 34 is formed with a sawtooth-shaped feed action portion on the upper side, and is configured so as to be able to feed the stem stalk harvested by reciprocating movement to one side in the lateral width direction of the machine body. .

Further, the auxiliary cutting device 14 is provided with various weed cover bodies 28 for preventing the cut stems from being caught and accumulated.
That is, the connecting frame cover body 28A provided for the stems to stay in the space above the connection frame 15 and the cut stems are caught at the bent portions of the forward frame portion 13c and the curved frame portion 13b. An elevating frame cover body 28 </ b> B for preventing accumulation is provided.

  As shown in FIGS. 9 and 10, the connecting frame cover body 28A is supported on the base 29, and as shown in FIGS. 6, 8, 9 and 12, the lifting frame cover body 28B is Provided in a state of being inclined to the upper front end portion of the forward frame portion 13c and the upper portion of the curved frame portion 13b and being fixed to the frame portions 13b and 13c in a form in which the cross-sectional shape is a mountain shape. It has been.

The transmission mechanism E for the movable blade 31 of the auxiliary cutting device 14 will be described.
As shown in FIG. 13, a pair of left and right rolling bearings 35 are housed in the internal space of the cylindrical shaft 18 supported by the bearing portion 17 located at the left end of the three bearing portions 17, and the left and right rolling bearings are provided. A drive shaft 36 is supported over 35. A rotating boss 38 to which an input sprocket 37 to which power is transmitted is attached is attached to a cantilever end portion 36 A of the drive shaft 36 that protrudes from the cylindrical shaft 18. The eccentric drive unit C is attached to the head.

  The eccentric drive unit C includes a rotary core portion 39 that is attached and fixed to the drive shaft 36 in an inclined state, a swing holder portion 41 that is externally fitted to the rotary core portion 39 via a large bearing 40, and a swing holder portion 41. It comprises a driving fork 43 mounted on the upper and lower end shafts 41 </ b> A of the moving holder 41 via a small bearing 42.

  Since the rotary core portion 39 attached to the drive shaft 36 rotates integrally with the drive shaft 36 but is in an inclined state, the swing holder portion 41 that is externally fitted to the rotary core portion 39 via the large bearing 40 is As indicated by arrows (ab), the drive shaft 36 is driven to swing left and right around an axis perpendicular to the rotation axis X2. The drive fork portion 43 that is externally fitted to the upper and lower end shafts of the swing holder portion 41 also swings so as to swing left and right in conjunction with the drive fork portion 43. In this way, the eccentric drive unit C constitutes a rotation conversion mechanism that converts the rotational motion of the drive shaft 36 into the left-right reciprocating motion of the drive rod shaft 44.

As shown in FIGS. 2 to 5, the drive fork portion 43 is fixedly attached with a drive rod shaft 44 in a forward and downward posture, and the drive rod shaft 44 extends to the vicinity of the auxiliary cutting device 14. A mounting base 45 extends from the lower end of the left elevating frame 13C toward the drive rod shaft 44, and a bearing block 46 fixed to the front end side of the mounting base 45 rotatably supports the front end of the drive rod shaft 44. is doing.
With such a configuration, the drive rod shaft 44 is configured to be swingable around the axis Z of the drive rod shaft 44 itself in conjunction with the left-right swing of the drive fork portion 43.

  A swing drive arm 47 is attached and fixed to a lower end portion of the drive rod shaft 44 that projects downward from the bearing block 46, and an arm linkage portion 47 </ b> A extending from the swing drive arm 47 is connected to the movable blade 31.

With the configuration as described above, the movable blade 31 has the input sprocket 37, the drive shaft 36, the rotary core portion 39, the swing holder portion 41, the drive fork portion 43, the drive rod shaft 44, the swing drive of the eccentric drive unit C. It is reciprocated to the left and right by the driving force transmitted through the arm 47 and the arm linkage portion 47A.
Therefore, the transmission mechanism E with respect to the sub cutting device 14 is comprised by these members, and this transmission mechanism E is provided in the left raising / lowering flame | frame 13C.

  Switching between a linked state in which the auxiliary cutting device 14 moves up and down in conjunction with the lifting and lowering operation of the cutting and conveying device 3 and a linkage release state in which the auxiliary cutting device 14 can move up and down independently of the lifting and lowering operation of the cutting and conveying device 3 A linkage mechanism B is provided as an operable linkage means.

  As shown in FIGS. 1, 3, 15, and 16, this linkage mechanism B is provided with a guide member 51 in which a guide long hole 50 is formed on the side of the auxiliary cutting device 14, and along the long hole 50. An operation state for linkage that is configured to include a guide shaft 52 as a guided body that is movably engaged and guided on the cutting and conveying device 3 side and that restrains the movement of the guide shaft 52 along the elongated hole; The guide member 51 includes a switching operation body 53 that can be switched to an operation state for releasing the linkage that allows the guide shaft 52 to move along the long hole 50.

  Specifically, as shown in FIGS. 2 to 4, the linkage mechanism B is attached across the central lifting frame 13 </ b> A of the three lifting frames 13 </ b> A, 13 </ b> B, and 13 </ b> C and the transport case 11 </ b> A of the transport mechanism 11. The linkage mechanism B includes a guide member 51 that is long in the vertical direction. As shown in FIG. 6, the lower end portion of the guide member 51 is attached to a lever support shaft 54 fixed to the central lifting frame 13A.

  As shown in FIG. 3, the guide member 51 integrally connects a guide action portion 51 </ b> A having a substantially U-shaped cross section located on the upper side and a rectangular tube-like connection support portion 51 </ b> B located on the lower side. Yes, as shown in FIGS. 15 and 16, the guide action part 51A is configured by a substantially U-shaped channel member having side plate parts 51b, 51b on both sides of the central wall part 51a. A long hole 50 is formed in the central wall portion 51a along the vertical direction.

  A guide shaft 52, which is a laterally guided body of the traveling machine body with the tip portion slidably engaged with the elongated hole 50 of the guide member 51, is fixed to the lateral side portion of the transport case 11A. A resin-made bush guide 56 as a sliding contact guide provided with an annular groove-shaped recess 55 is externally fitted to the guide shaft 52, and the elongated hole 50 of the guide member 51 is inserted into the recess 55 of the bush guide 56. The guide shaft 52 is configured to be engaged and guided in a state in which the inner edge portion enters and engages.

  The guide member 51 is a switching operation body 53 that can be switched between a linkage operation state that restricts movement of the guide shaft 52 along the long hole 50 and a link release operation state that allows movement of the guide shaft 52 along the long hole 50. It has. When the switching operation body 53 is switched to the linkage operation state, the switching operation body 53 restricts the movement of the guide shaft 52 associated with the lifting operation of the cutting and conveying device 3 at the linkage setting position P in the long hole 50, In a state where the switching operation body 53 is switched to the linkage operation state, the guide shaft 52 moves from the linkage setting position P to the ascending operation side of the cutting and conveying device 3 toward the linkage setting position P. Therefore, the switching operation body 53 is provided in a state in which it can be moved backward and is urged to return to the linkage operation state.

In other words, the switching operation body 53 is supported by the guide member 51 so as to be freely swingable between the linkage operation state and the linkage release operation state, and the toggle operation state of the linkage operation state and the linkage release operation state by the toggle spring 57. Each is configured to be held in position by an elastic biasing force.
That is, as shown in FIG. 15, the switching operation body 53 includes a manual operation portion 53 a on the upper side and a regulation operation portion 53 b that acts on the guide shaft 52 on the lower side by bending a bar in a substantially Z shape. The manual operation portion 53a and the regulating action portion 53b are connected by a relay portion 53c, and a bracket 58 provided in a fixed state between the manual operation portion 53a and the relay portion 53c is fixed on the guide member side. The unit 59 is pivotally supported so as to be swingable around an axis X3 along the width direction of the fuselage. The bracket 58 is bent in a substantially L shape, and a toggle spring 57 is stretched between a swing side end portion of the bracket 58 and a spring receiving portion 60 formed on the guide member 51.

  When the switching operation body 53 is swung in the clockwise direction in FIG. 15 beyond the dead point by a manual operation, the switching operation body 53 is switched to the linkage operation state (the state shown by the solid line in FIG. 15), and the elastic biasing force of the toggle spring 57 The position is held in the linkage operation state (this state corresponds to the linkage state of the linkage mechanism B). Further, when the manual operation is performed to swing the counterclockwise direction in FIG. 15 beyond the dead point, the operation is switched to the linkage release operation state (indicated by the phantom line in FIG. 15), and the elastic biasing force of the toggle spring 57 is changed. The position is held in the linkage release operation state (this state corresponds to the linkage release state of the linkage mechanism B).

  The switching operation body 53 is located in a state of penetrating through the through holes 61 and 61 formed in the side plate portions 51b and 51b on both sides of the guide member 51 in the linkage operation state, and the upper end of the through hole 61 The position is held in contact with the edge, and in this state, the upward movement of the guide shaft 52 positioned on the lower side along the long hole 50 is restricted. In this state, the auxiliary cutting device 14 and the cutting and conveying device 3 are connected so that the auxiliary cutting device 14 moves up and down in conjunction with the conveying case 11A.

  When the switching operation body 53 is switched to the linkage release operation state, the guide shaft 52 is movably guided along the elongated hole 50 of the guide member 51 as the transfer case 11A is moved up and down, and the auxiliary cutting is performed. The sub-cutting device 14 and the transport case 11A are disconnected so that the device 14 can be lifted and lowered independently of the lifting operation of the transport case 11A.

  In such a configuration, for example, as shown in FIG. 18, in the state where the guide shaft 52 is located above the linkage setting position P (the state shown in FIG. 18B), the switching is erroneously performed. Even when the operating body 53 is switched to the linkage operating state (the state shown in FIG. 18C), the cutting and conveying device 3 is lowered, the sub-cutting device 14 is grounded, and the guide shaft 52 is linked. When the relative movement is made with respect to the guide member 51 so as to return to the set position P, the switching operation body 53 is pushed by the guide shaft 52 and elastically moved backward as shown in FIG. The shaft 52 returns to the linkage setting position P. After the guide shaft 52 returns to the linkage setting position P, the switching operation body 53 automatically returns to the linkage operation state (the state shown in FIG. 18E) by the elastic biasing force of the toggle spring 57.

The guide member 51 is provided with a restricting tool 62 that regulates an operation limit of movement of the guide shaft 52 that accompanies the lifting operation of the cutting and conveying device 3, and the attachment position of the restricting tool 62 with respect to the guide member 51 is the length of the long hole 50. It can be changed and adjusted along the direction.
That is, as shown in FIG. 15, a restricting tool 62 composed of a headed pin is provided in a state of penetrating through the through holes 63 and 63 formed in the side plate portions 51 b and 51 b on both sides of the guide member 51. As shown in FIG. 16, the through holes 63 are formed at a plurality of locations (four locations in the example shown in the figure) at intervals along the longitudinal direction of the long holes 50. By attaching the restricting tool 62 to any one of the plurality of through holes 63, the attachment position of the restricting tool 62 to the guide member 51 can be changed and adjusted along the longitudinal direction of the long hole 50.

  By providing the restricting tool 62 as described above, when the cutting and conveying device 3 is raised to a set height or higher even if the switching operation body 53 is switched to the linkage release operation state, the elongated hole of the guide shaft 52 is provided. When the movement within 50 is restricted and the guide shaft 52 is moved in conjunction with the guide member 51, the auxiliary cutting device 14 is lifted in conjunction with the lifting operation of the cutting and conveying device 3.

  As a result, the switching operation body 53 is switched to the linkage release operation state, and the main cutting device 9 is lifted so as to cut only the tip of the planted culm, and the auxiliary cutting device 14 is moved to the planted culm. When cutting operation is performed in a work mode set at a low position so as to cut the stock, when the turning operation is performed approaching the heel, even if the switching operation body 53 is not switched to the linked state, When the cutting and conveying apparatus 3 is greatly raised, the auxiliary cutting apparatus 14 can also be raised in conjunction with it, and contact with the field scene can be avoided.

  Then, by changing and adjusting the attachment position of the restricting tool 62 with respect to the guide member 51 along the longitudinal direction of the long hole 50, the position where the restricting tool 52 starts to act is determined as the machine lift position of the cutting and conveying apparatus 3 according to the work situation. It can be changed and set in advance at an appropriate position.

At the lower end portion of the guide member 51, there are provided two pivot boss portions 64 which are attached in a state where the lever support shafts 54 are fitted to each other at different positions in the vertical direction. The relative position of the guide member 51 with respect to the auxiliary cutting device 14 can be changed and adjusted.
Thus, by changing the position of the lower end portion of the guide member 51, it is also possible to change and set the ascending position of the cutting and conveying apparatus 3 at which the restricting tool 52 starts to act.

  In addition, a large-diameter portion 36a for fitting for mounting the bush guide 56 at the time of assembly is formed at the lower end portion of the long hole 50 formed in the guide member 51. The cutting and conveying device 3 is lowered most. Even if it makes it, the guide shaft 52 does not move below the linkage setting position P, and does not move to the large diameter portion 50a.

  Then, at the time of cutting, as shown in FIG. 1, the linkage mechanism B is switched to the linkage release state by switching the switching operation body 53 to the linkage release operation state. Further, when traveling over the heel, as shown in FIG. 19, the linkage mechanism B is switched to the linkage state by switching the switching operation body 53 to the linkage operation state.

Since the linkage mechanism B is switched to the linkage-released state at the time of the cutting operation, the sub-cutting device 14 moves up and down while following the ground to the ground. However, the arrangement height of the main cutting device 9 is approximately the rear of the main cutting device 9. It is located at the same arrangement height and does not perform the cutting action.
Then, when traveling over the heel, as shown in FIG. 19, in order to avoid contact with the heel, the cutting and conveying device 3 is greatly raised to the raised non-working position, but the linkage mechanism B is in the linked state. If the cutting and conveying device 3 is lifted to the non-working position, the secondary cutting device 14 is lifted by the cutting and conveying device 3 due to the linkage by the linkage mechanism B. Can be prevented from touching.

[Another embodiment]
(1) In the above-described embodiment, the base end side frame portion 13d and the distal end side frame portion 13e of the elevating frame 13B have been shown as an example of being bent upwardly in a side view. Instead, the base end side frame portion 13d is provided in a state of extending downward to the height position where the auxiliary cutting device 14 exists, the lateral frame portion 13e1 is extended from the distal end portion, and the front and rear direction frame portion 13e2 is further horizontally oriented. The base end side frame portion 13d and the tip end side frame portion 13e of the elevating frame 13B may be bent and formed in a downward convex shape in a side view.

(2) In the above-described embodiment, the front end side frame portion 13e is configured to include the sideways frame portion 13e1 and the front and rear direction frame portion 13e2. However, instead of such a configuration, the front end side frame portion 13e is provided. May be constituted by a single frame portion formed in a straight line extending in an oblique direction so as to be located at the center side in the lateral direction of the airframe from the front end of the base end side frame portion 13d toward the front side of the airframe.

(3) In the above-described embodiment, the other side elevating frame 13C is exemplified by a single frame portion that extends obliquely downward in a straight line, but the other side elevating frame 13C is bent. It is good also as a structure provided.

(4) In the above embodiment, the square pipe material is used as the frame material constituting the elevating frames 13A, 13B, 13C. However, the present invention is not limited to the square pipe material, but a round pipe material, a round bar material, an angle material, and a channel. A frame material having a different shape such as a material may be used.

  The present invention can be used for a combine for harvesting various crops such as rice, wheat and soybeans.

DESCRIPTION OF SYMBOLS 1 Traveling apparatus 2 Traveling machine body 3 Cutting and conveying apparatus 6 Boarding operation part 9 Main cutting apparatus 13A, 13B, 13C Elevating frame 13B One side elevating frame 13d Base end side frame part 13e Front end side frame part 13e1 Lateral frame part 13e2 Front and rear facing frame part 13C Lifting frame 14 on the other side Sub-cutting device E Transmission mechanism

Claims (4)

A main cutting device that cuts the planted culm on a traveling machine body that is provided with a pair of left and right traveling devices and a boarding operation unit, and a sub-cutting device that acts on the planted culm at a position lower than the main cutting device. A combine that can be moved up and down,
The sub-cutting device is supported so as to be movable up and down with respect to the traveling machine body by a plurality of lifting frames extending forward from the traveling machine body in a state of being spaced apart from each other in the lateral direction of the traveling machine body,
Of the plurality of lifting frames, one side lifting frame located on the side of the boarding operation part in the traveling machine body width direction is on the lateral outer side of the one side traveling device located on the boarding operation part side in the running machine body width direction. A base end side frame portion extending toward the front side, and extending from the tip end of the base end side frame portion so as to be positioned on the front side of the one side traveling device from the base end side frame portion to the center side in the body width direction. It is configured to be provided with a leading end side frame portion,
In the state where the end portion position on the boarding operation unit side in the auxiliary cutting device is the same position as the lateral outer side end portion of the one side traveling device in the longitudinal direction of the traveling vehicle body, the auxiliary cutting device is attached to the traveling aircraft body. Combine that is supported against.   From the front end of the base end side frame portion, the front end side frame portion extends laterally from the front end of the one side traveling device toward the center side in the lateral direction of the vehicle body, and from the front end of the horizontal frame portion The combine of Claim 1 comprised with the front-back direction flame | frame part extended toward the body front.   The combine according to claim 2, wherein the front-rear frame portion is configured to extend downward toward the front of the fuselage. Of the plurality of lifting frames, the other lifting frame located on the side opposite to the boarding operation unit side in the lateral direction of the traveling machine body is configured by a single frame portion extending linearly obliquely downward,
The combine according to any one of claims 1 to 3, wherein a transmission mechanism that transmits a driving force to the auxiliary cutting device is provided in the other-side lifting frame.

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