JP3540983B2 - Combine harvester mounting device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention further includes a cutting section on the front of the traveling machine equipped with a threshing section and a boarding operation section projecting forward, a cutting section for cutting and cultivating planted grain culms and supplying the harvested section to the threshing section. It is connected to one side so as to be able to move up and down freely, and the mowing work posture is located at the front part of the traveling machine by swinging around a vertical axis located on the opposite side of the right and left of the riding operation unit. The present invention also relates to a combine harvester mounting device, wherein the harvester is configured to be freely switchable between an open position in which the front of the traveling machine is opened.
[0002]
[Prior art]
Conventionally, in order to support the reaping portion on the upper end of the support shaft of the traveling machine constituting the vertical shaft center, the mowing portion mounting portion on the support shaft side has been disposed in front of the vertical shaft center.
[0003]
[Problems to be solved by the invention]
However, according to the above-described conventional technique, in order to perform maintenance such as release of clogged culm in a field, the cutting section is floated to the ground, and when the swinging operation is performed from the cutting work posture to the open posture, the mounting of the spindle to the cutting section is performed. As the part protrudes forward from the vertical axis, the forward tilting moment due to the weight of the cutting part applied to the support shaft increases, and to support the cutting part firmly without backlash, The shaft and its supporting structure need to be large-scale, resulting in an increase in the size and cost of the structure.
[0004]
An object of the present invention is to reduce the size and cost of the structure.
[0005]
[Means for Solving the Problems]
The features, operations, and effects of the combine harvester mounting device of the present invention according to claim 1 are as follows.
[0006]
〔Characteristic〕
At the front of the traveling machine equipped with a threshing unit and a boarding operation unit protruding forward, a cutting unit that cuts planted grain culms and feeds it to the threshing unit is located on one of the left and right sides of the boarding operation unit. And a mowing work posture and a traveling machine, which are located at a front portion of the traveling machine by swinging around a vertical axis located on a side opposite to the boarding operation unit on the left and right sides. In the combine, wherein the cutting unit is configured to be freely switchable to an open position in which the front of the cutting unit is opened, a horizontal tubular frame of the cutting unit is provided at an upper end of a traveling shaft of the traveling machine that constitutes the vertical axis. A cutting section mounting portion for supporting the ground portion in a floating state, and mounting the cutting section so that a horizontal axis of the horizontal tubular frame placed on the cutting section mounting section is located rearward of the vertical axis. The point is that the parts are arranged.
[0007]
[Action]
When the mowing portion mounting portion is disposed behind the vertical axis, and the mowing portion is levitated to the ground and the mowing portion is supported by the support shaft, the mowing portion mounting portion is located behind the vertical axis. Therefore, it is possible to reduce the forward tilting moment acting on the support shaft due to the weight of the mowing part.
[0008]
〔effect〕
Therefore, while the mowing part is firmly supported on the support shaft without rattling in the state of floating above the ground, the support shaft and its support structure can be made small and compact, and the cost can be reduced.
[0009]
The features, operations and effects of the combine harvester mounting apparatus according to the second aspect of the present invention are as follows.
[0010]
〔Characteristic〕
The reaper mounting device for a combine according to claim 1, wherein the reaper mounting portion receives and supports a mounting target portion of the reaper in accordance with the relative rearward movement of the reaper. The present invention is characterized in that it comprises a holder and a fastener for pressing and fixing an attachment target portion received and supported by the mowing portion holder to the mowing portion holder.
[0011]
[Action]
A mowing portion mounting portion on the spindle supporting the mowing portion to be mounted is composed of a mowing portion holder and a fastener, and the mowing portion is detachable with respect to the traveling machine. Focusing on the fact that the mowing part mounting part is located behind the vertical axis, which means that a strong support shaft part is located in front of the mowing part mounting part. Focusing attention, the mowing unit holder is received and supported by the relative rearward movement of the mowing unit, so that a strong spindle part located in front of the mowing unit mounting unit is attached to the mounting object with the rearward movement. The portion functions as a guide to the mowing portion mounting portion, and no special reinforcement or the like is required to guide the mounting target portion.
[0012]
〔effect〕
Therefore, the mowing unit can be attached to and detached from the traveling machine with a simple structure and compact.
[0013]
The features, operations and effects of the combine harvester mounting device according to the third aspect of the present invention are as follows.
[0014]
〔Characteristic〕
In the harvester mounting device for a combine according to the second aspect of the present invention, the fastening tool is detachable from the harvester holder.
[0015]
[Action]
The fastening tool for fixing the mounting target part to the mowing part holder is detachable from the mowing part holder. Therefore, when the mowing part holder is supported by the mowing part holder and when the mowing part holder is removed, tightening is required. By removing the tool from the reaper holder, the fastener does not hinder the attachment / detachment of the mounting target portion to / from the reaper holder.
[0016]
〔effect〕
Therefore, the mowing part can be attached to and detached from the traveling machine with good workability.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
As shown in FIGS. 1 and 2, the combine is equipped with a threshing unit 1 and a boarding operation unit 2 protruding forward, and a cutting unit is provided at the front of a traveling machine 4 having a crawler traveling device 3. 5 is connected to the boarding drive unit 2 so as to be able to move up and down while being located on one side of the left and right sides of the boarding operation unit 2, and an up / down drive mechanism for operating the mowing unit 5 is provided.
[0018]
The cutting unit 5 raises the planted grain culm, raises the stem by the device 6, cuts the root of the plant by the cutting device 7, and conveys and feeds the feed chain 1a of the threshing unit 1 by the conveying device 8, A part of the structural member 9 also serves as a transmission case.
[0019]
The cutting unit 5 is moved up and down by swinging up and down around the horizontal axis X. The means for attaching the cutting unit 5 to the traveling machine 4 so as to be able to move up and down is shown in FIGS. As described above, the horizontal tubular frame 9A which also serves as the transmission case among the structural members 9 extends around the horizontal axis X in the state of extending over the upper ends of the left and right structures 10L and 10R erected on the main frame 4F of the traveling main machine 4. Means for rotatably attaching to That is, the horizontal tubular frame 9A is a shaft supported by the structures 10L and 10R so as to be vertically swingable.
[0020]
The lifting drive mechanism supplies pressure oil to a hydraulic cylinder 11 interposed between the main unit frame 4F and a front-rearward cylindrical frame 9B which also serves as a forward transmission case among the structural members 9. Accordingly, the mowing unit 5 is raised against its weight, and the mowing unit 5 is lowered by its weight in accordance with drainage of oil from the hydraulic cylinder 11.
[0021]
Then, as shown in FIG. 3, the cutting unit 5 is released from the transmission case in a state where the connection via the pin 12 to the structural member 9 of the hydraulic cylinder 11 (the front-rear facing cylindrical frame 9B) is released. With the power transmission belt removed from the input pulley IP that receives the power of the vehicle through the power transmission belt, the traveling main body is swung around a vertical axis P located on the opposite side of the left and right of the boarding operation unit 2. It is configured to be able to freely switch between a mowing work posture located in front of the machine 4 and an open posture in which the front of the traveling machine 4 is opened.
[0022]
As shown in FIGS. 5 and 6, the pins 12 are connected to each other by being inserted in series over a mounting portion 11A of the hydraulic cylinder 11 formed by the pins 12 and a bracket 13 fixed to the front-rear-facing tubular frame 9B. A stopper 12a fixed to the pin 12 is elastically sandwiched between the bracket 13 and a catcher 14 made of a leaf spring screwed to the bracket 13 to prevent the stopper 12a from coming off. Thus, the stopper 12a is detached from between the catcher 14 and the bracket 13 in a state where the catcher 14 is elastically deformed, so that the stopper is released. A handle 12A for insertion / removal and swinging is fixed to the pin 12.
[0023]
As shown in FIGS. 4 and 7 to 11, the means for supporting the mowing part 5 on the traveling machine 4 so as to be able to swing around the vertical axis P is the boarding operation of the structures 10L and 10R. The structure 10L on the far side from the part 2 is rotatably supported by the tower-shaped structure 15 constructed on the machine frame 4F and the vertical axis P around the tower-shaped structure 15 and the machine frame 4F. And a support shaft 16 for forming a vertical shaft center. A mounting target portion 9b formed from left and right ends of the horizontal tubular frame 9A is detachably mounted on the upper end of the support shaft 16. This is a means for mounting the reaper mounting portion 17 in a state positioned behind the longitudinal axis P.
The means for rotatably supporting the support shaft 16 around the vertical axis is provided by mounting and supporting the lower end surface of the support shaft 16 on the machine frame 4F, and supporting the lower end of the support shaft 16 in this machine. A means for rotatably penetrating through the frame 4F and rotatingly penetrating a top plate 15A of the tower-like structure 15 near the upper end of the support shaft 16 to prevent the support shaft 16 from falling down. As shown in FIG. 12, a pair of front and rear stoppers 16a slidably contacting the lower surface of the top plate 15A to prevent the support shaft 16 from falling back and forth when the cutting unit 5 is in the cutting posture. Is bolted.
Also, as shown in FIG. 16, the mowing portion mounting portion 17 is formed integrally with the support shaft 16, and moves the mounting target portion 9b with the relative rearward movement of the mowing portion 5. There is provided a mowing portion holder 18 for receiving and supporting, and a fastening tool 20 for pressing and fixing the mounting target portion 9b received and supported by the mowing portion holder 18 to the mowing portion holder 18 as the bolt 19 is tightened. The upper surface portion of the support shaft 16 that is continuous with the front portion of the mowing portion holder 18 serves as a guide surface G that guides the mounting target portion 9b that moves rearward to the mowing portion holder 18. The fastener 20 can be detached from the reaper holder 18 by loosening and removing the bolt 19. In addition, when the fastening tool 20 is attached to the mowing portion holder 18, both end faces in the direction along the axis (lateral axis X) are brought into contact with the left and right step portions 40 formed in the attachment target portion 9 b. This regulates the position of the mounting target portion 9b in the direction along the lateral axis X with respect to the reaper mounting portion 17. Of course, the mowing portion mounting portion 17 swings around the horizontal axis X of the mounting target portion 9b, that is, the horizontal cylindrical frame 9A in a state where the mounting target portion 9b is pressed and fixed to the mowing portion holder 18 by the fastener 20. Movement is allowed.
A flexible member W such as an oiling hose or an electric signal line (harness) extending from the traveling machine 4 to the cutting unit 5 is disposed so as to pass near the vertical axis P, and the vertical shaft of the cutting unit 5 is arranged. Pulling and loosening caused by swinging around the center P are minimized.
[0024]
The means for fixing the mowing part 5 in the mowing work posture is, as shown in (a) and (b) of FIGS. 4, 8 to 10 and 14, the boarding operation part 2 of the structures 10 </ b> L and 10 </ b> R. On the upper part of the structure 10R on the near side, the fixing target portion 9a of the horizontal tubular frame 9A separated from the vertical axis P by a set distance is rocked to the open posture of the reaping unit 5 and moved forward relative to the upper part of the structure 10R. The holder 21 for mounting and supporting the holder 21 is formed as an integral body in a state in which the target object 9a is allowed to move, and an opening posture for allowing the mounting and detachment of the fixing target portion 9a with respect to the holder 21 and a fixing target portion at a set position of the holder 21 are provided. 9a is mounted on the holder 21 so as to swing open and close to a closed position in which the fixing device 9a is pressed and fixed. In a state where the fastener 22 is in the closed position, the fastener 22 is fixed to the fastener 22. Forming fixation in hole 23 and holder 21 And it is configured to provide a fixing pin 25 for fixing the fastener 22 to the closed position by a series the insertion over hole 24 Doo. The structure 10R on the boarding operation unit 2 side is a pillar-shaped structure, and the upper part thereof and the upper part of the tower-like structure 15 are connected by a reinforcing frame F. Of course, in a state where the fixing target portion 9a is pressed and fixed to the holder 21 with the fastener 22, the swing around the fixing target portion 9a, that is, around the horizontal axis X of the horizontal tubular frame 9A is allowed. As shown in FIG. 15, the tightening tool 22 contacts the holder 21 in the closing pin insertion / removal direction in the closed posture and a pair of restricting portions 22 a whose position is regulated relative to the holder 21 in the fixing pin insertion / removal direction. And an operating unit 22b for opening and closing is integrally provided.
As shown in FIGS. 15A and 15B, the fixing pin 25 includes a tapered taper portion 25a that swings the fastener 22 with the insertion and aligns the fixing holes 23 and 24 with each other. A position restricting portion 25b that fits tightly into both fixing holes 23, 24 in an inserted state, and a male screw that is screwed into a female screw portion 26 formed in the fixing hole 23 of one of the restricting portions 22a to be locked. A portion 25c is formed. The fixing pin 25 is provided with a handle 27 for insertion and removal and screwing. In other words, the entire fixing pin 25 is inserted and moved by screwing the male screw portion 25c into the female screw portion 26, and the centering is performed by inserting the tapered tapered portion 25a. The operation force for rotating the fixing pin 25 is small.
[0025]
In addition, the combine includes an elevating drive mechanism, that is, elevating and lowering locking means for supporting the weight of the mowing unit 5 in place of the hydraulic cylinder 11 in a state where the mowing unit 5 is positioned above the elevating range.
As shown in FIGS. 13 (a) and (b), the lifting / lowering lock means raises / lowers (oscillates) the mounting portion 9b of the mowing portion 5 and the mowing portion holder 18 which is a fixing member of the traveling machine 4. ) Between the parts a and b facing each other in the direction, the cutting part 5 can be inserted and withdrawn in a state where it is higher than the lock position, and in the inserted state, on the side of the mounting target part 9b that has descended (swinged) to the lock position. A lock member 28 is provided, which is sandwiched between the part a and the part b on the side of the reaping unit holder 18 so as to prevent the lowering of the reaping unit 5 by supporting the weight of the reaping unit 5 by the reaping unit holder 18. The lock member 28 is swingably mounted on the cutting unit holder 18 between the insertion position and the extraction position, and is stably mounted and supported on the cutting unit holder 18 at the insertion position. Further, as shown in FIG. 11, the elevating and lowering lock means includes an operation shaft 30 for remote operation with an operation lever 29 also serving as a shaft for attaching the lock member 28 to the reaper holder 18.
[0026]
In this combine, as shown in (b) of FIG. 13, the reaper 5 is raised above the lock position in a state where the reaper 5 is in the reaping work posture. As shown, in this state, after the rocking member 28 of the elevating lock means is swung from the extraction position to the insertion position, the cutting unit 5 is lowered to support the cutting unit 5 with the hydraulic cylinder 11 supporting the load in a floating state above the ground. The operation is shifted to the elevating lock means, and the pin 12 is pulled out in the state of floating above the ground to release the connection between the mowing part 5 and the hydraulic cylinder 11, while the fixing pin 25 is pulled out and the fastener 22 is swung to the open position. Then, in this state, the reaper 5 is swung to the open position around the vertical axis P. As a result, the side of the driving unit below the boarding operation unit 2 and the front of the traveling machine 4 can be opened, and the rear of the reaping unit 5 can be opened to perform various maintenance such as release of clogging of grain culm transport. is there.
[0027]
Then, as shown in FIGS. 10 and 11, the fixing pin 31 attached to the mowing portion holder 18 is dropped by its own weight into a lock hole 32 formed in the top plate 15A, and is inserted into the vertical axis P of the mowing portion 5. The swinging around is regulated to fix the reaper 5 in the open position.
[0028]
Further, in this combine, both the fasteners 20 and 22 are opened while the cutting unit 5 is supported on the ground, and the connection of the hydraulic cylinder 11 to the cutting unit 5 is released. By moving it relatively rearward, the mowing unit 5 can be detached from the traveling machine 4. In other words, in this combine, the mowing part 5 is connected to the traveling machine 4 at two points, the mounting target part 9b and the fixing target part 9a, in the mowing work posture, and in the open posture, the cutting is performed at one point of the mounting target part 9b. The section 5 is connected to the traveling machine 4.
[0029]
[Another embodiment]
[1] The lifting lock means is configured as follows. That is, as shown in (a), (b), (c), and (d) of FIGS. 17 to 19, a lock hole 50 having an axis parallel to the lateral axis X is formed in the mounting target portion 9b. When the mowing portion 5 is moved up and down to the locking position in the mowing portion holder 18 and faces the locking hole 50 in the axial direction, the locking hole 50 is moved in the state where the mowing portion 5 is moved up and down to the locking position. A rocking pin 51 that regulates the swing of the mounting target portion 9b around the horizontal axis X, that is, the lifting and lowering of the reaping portion 5, is attached to the mounting target portion 9b, and the same as the locking pin 51. A push / pull operating tool 52 that is moved in the direction between the lock position R1 and the unlock position R2 and that is frictionally held between the lock position R1 and the unlock position R2. When located in R1 The cutting pin 5 is moved up and down to the locking position by urging the locking pin 51 in the insertion direction so that when the locking pin 51 is positioned corresponding to the locking hole 50, the locking pin 51 is locked. 50, an automatic locking spring 53 is provided for releasing the urging of the locking pin 51 when the push / pull operation tool 52 is located at the lock release position R2, and the push / pull operation tool 52 is positioned at the lock release position R2. When the lock pin 51 located at the lock position is moved and urged in the pull-out direction and the mowing unit 5 is moved up and down, the friction force between the lock pin 51 and the lock hole 50 is set to the set value. When the lock pin 51 is pulled out of the lock hole 50 and the push / pull operation tool 52 is in the lock position when the lock pin 51 is at Providing a Unlock spring 54.
When the lifting and lowering lock means is used, as shown in (b) of FIG. 19, the mowing unit 5 is raised and lowered to the lock position while the push / pull operation tool 52 is operated to the lock position R1, thereby obtaining (c) in FIG. As shown in ()), when the mowing part 5 is moved up and down to the lock position, the locking pin 51 is automatically inserted into the locking hole 50 by the biasing force of the automatic locking spring 53, and the elevation of the mowing part 5 is regulated. You. On the other hand, as shown in FIG. 19D, the mowing unit 5 is moved up and down while the push / pull operation tool 52 is operated to the unlock position in the vertical movement restricting state, as shown in FIG. When the frictional force between the locking pin 51 and the locking hole 50 becomes equal to or less than the set value, the locking pin 51 is automatically extracted from the locking hole 50 by the urging force of the automatic unlocking spring 54, and the cutting section 5 lifts are allowed. Of course, at normal times, as shown in FIG. 19A, the push-pull operation tool 52 is operated at the lock release position R2 so that the automatic lock spring 53 can be inserted into the lock pin 51 in the insertion direction. Since the moving force is not applied, the lock pin 51 is held at the lock release position, and the raising and lowering of the cutting unit 5 is freely permitted.
[0030]
[2] The lifting lock means is configured as follows. That is, as shown in (a), (b), (c), and (d) of FIG. 20, a locking hole 50 having an axis parallel to the lateral axis X is formed in the mounting target portion 9b, When the mowing portion 5 is moved up and down to the lock position in the holder 18 and faces the locking hole 50 in the axial direction when the mowing portion 5 is moved up and down to the locking position, the locking portion 50 is moved up and down to the locking position. A rocking pin 51 for restricting swinging of the mounting target portion 9b around the horizontal axis X, that is, lifting and lowering of the reaping portion 5, is mounted by being inserted and removed freely, and locked in the same direction as the locking pin 51. A push / pull operating tool 52 is provided which is operated to move between a position R1 and an unlock position R2. The push / pull operating tool 52 is elastically engaged with a first groove 55 formed in the push / pull operating tool 52. In the state where the operation movement to the lock release position R2 is permitted. The pulling operation tool 52 is held at the lock position R1, and is elastically engaged with the second groove 56 formed in the push / pull operation tool 52 to allow the push / pull operation tool 52 to move to the lock position R1. A ball detent mechanism 57 for holding the push / pull operation tool 52 at the lock release position R2 in the state is provided, and when the push / pull operation tool 52 is located at the lock position R1, the locking pin 51 is urged to move in the insertion direction. When the cutting pin 5 is moved up and down to the lock position, the lock pin 51 is inserted into the lock hole 50 when the lock pin 51 is positioned corresponding to the lock hole 50, and the push / pull operation tool 52 is moved to the lock release position. When the lock pin 51 located in the lock position is moved and urged in the pull-out direction when the lock pin 51 is located at the position R2, the mowing unit 5 is moved up and down to lock the lock hole 50 of the lock pin 51 with the lock hole 50. Frictional force between the provided actuation spring 58 to withdrawn the locking pin 51 from the locking hole 50 when it is below the set value.
When the lifting / lowering lock means is used, as shown in (b) of FIG. 20, the mowing unit 5 is raised and lowered to the lock position while the push / pull operation tool 52 is operated to the lock position R1, thereby obtaining (c) in FIG. As shown in ()), when the mowing unit 5 is moved up and down to the lock position, the locking pin 51 is automatically inserted into the locking hole 50 by the urging force of the operating spring 58, and the vertical movement of the mowing unit 5 is regulated. On the other hand, as shown in FIG. 20 (D), by raising and lowering the reaping unit 5 in a state where the push / pull operation tool 52 is operated to the unlock position in the vertically controlled state, as shown in FIG. 20 (A). When the frictional force between the locking pin 51 and the locking hole 50 becomes equal to or less than the set value, the locking pin 51 is automatically pulled out of the locking hole 50 by the urging force of the operating spring 58, and the mowing unit 5 is moved up and down. Is acceptable. Of course, in a normal state, as shown in FIG. 20A, the push-pull operation tool 52 is operated at the lock release position R2 so that the moving force of the operation spring 58 in the insertion direction with respect to the lock pin 51 can be obtained. Is not provided, the lock pin 51 is held at the unlocked position, and the mowing unit 5 can be freely moved up and down.
[Brief description of the drawings]
FIG. 1 is a side view of a combine. FIG. 2 is a plan view of a combine. FIG. 3 is a plan view of a combine in a state where a cutting unit is swung to an open position. FIG. 4 is a front view of a main part. Side view of main part [FIG. 6] Cross-sectional view of main part [FIG. 7] Side view of main part [FIG. 8] Top view of main part in mowing work posture [FIG. 9] Top view of main part in open posture FIG. 10 is a cross-sectional plan view of a main part in a mowing work posture. FIG. 11 is a cross-sectional plan view of a main part in an open posture. FIG. 12 is a cross-sectional plan view of a main part. FIG. 14 is a longitudinal side view of the main part showing the operation of the means for fixing the mowing work posture. FIG. 15 is a vertical front view of the main part showing the opening and closing operation of the fastener. FIG. 17 is a front view of a main part showing another embodiment. FIG. 18 is a vertical side view of a main part showing operation of another embodiment. Longitudinal sectional front view of a main part illustrating the operation of a vertical sectional front view [Figure 20] Another embodiment of a main part showing a work [Description of symbols]
REFERENCE SIGNS LIST 1 threshing section 2 boarding operation section 4 traveling machine 5 cutting section P vertical axis 16 support shaft 17 cutting section mounting section 9b mounting target section 18 cutting section holder 20 fastening tool

Claims (3)

At the front of the traveling machine equipped with a threshing unit and a boarding operation unit protruding forward, a cutting unit that cuts planted grain culms and feeds it to the threshing unit is located on one of the left and right sides of the boarding operation unit. And a mowing work posture and a traveling machine, which are located at a front portion of the traveling machine by swinging around a vertical axis located on a side opposite to the boarding operation unit on the left and right sides. In the combine, wherein the cutting unit is configured to be freely switchable to an open position in which the front of the cutting unit is opened, a horizontal tubular frame of the cutting unit is provided at an upper end of a traveling shaft of the traveling machine that constitutes the vertical axis. A cutting section mounting portion for supporting the ground portion in a floating state, and mounting the cutting section so that a horizontal axis of the horizontal tubular frame placed on the cutting section mounting section is located rearward of the vertical axis. reaper mounted instrumentation combine that is arranged parts . A cutting section holder configured to receive and support a mounting target portion of the cutting section as the cutting section mounting section moves relatively rearward; 2. The harvester mounting device for a combine according to claim 1, further comprising: a fastener for pressing and fixing to a holder. The harvester mounting device for a combine according to claim 2, wherein the fastening tool is detachable from the harvester holder.

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