JP2010051217A - Combined harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combined harvester having a simplified structure and reduced cost by reducing various sensors, for controlling the reap height of an auxiliary cutting device separately from or associating with control of the reap height of a main cutting device. <P>SOLUTION: In the combined harvester, the main cutting device 32 is configured to be freely lifted up and down relative to a traveling machine body, and the auxiliary cutting device 41 is configured to be lifted up and down by being supported by a lifting up and down frame 40 swingably mounted on the traveling machine body side. The combined harvester includes engaging means 5 switchably operating the engagement of the lifting up and down of the auxiliary cutting device 41 relative to the main cutting device 32 between the engaging state in which the auxiliary cutting device 41 is lifted up and down in association with lifting up and down of the main cutting device 32, and a disengaging state in which the auxiliary cutting device 41 is freely lifted up and down separately and independently from the lifting up and down of the main cutting device 32. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a combine provided with a main cutting device that cuts an upper portion of a planted stem and a sub-cutting device that acts on the planted stem at a position lower than the main cutting device.

As described above, it is provided with two types of cutting devices, a main cutting device that reaps the upper part of the planted stalk and a secondary cutting device that acts on the planted stalk at a position lower than the main cutting device. In order to feed only the granulation part of the stalks into the threshing device, the granulation part is cut by the main cutting device, and the stalk portion below the granulation part is sub-cut so that it is released into the field without being put into the threshing device. This is for cutting the stock portion with the apparatus.
As this type of combine, those having the structures described in the following [1] and [2] are conventionally known.
[1] A state in which a secondary cutting device is attached to a cutting frame equipped with a primary cutting device, and the cutting height of the secondary cutting device is controlled to move up and down in synchronization with the cutting height adjustment operation of the primary cutting device; When the height of the secondary cutting device is adjusted separately from the cutting height adjustment operation of the cutting device, and when the ground level of the entire cutting unit is higher than the predetermined height, the secondary cutting device is automatically placed in the storage position. (For example, refer to Patent Document 1).
[2] A sub-cutting device is attached to a cutting frame having a main cutting device, and the cutting height of the sub-cutting device is controlled to move up and down in synchronization with the cutting height adjustment operation of the main cutting device. In addition, the sub-cutting device is provided with a grounding housing, and the operation of the grounding housing is detected by a potentiometer so that the sub-cutting device is controlled up and down independently (for example, see Patent Document 2).

JP-A-7-147828 (paragraph number [0012], FIG. 1 and FIG. 2) Japanese Patent Laid-Open No. 7-155044 (paragraph numbers [0017], [0019], FIG. 1 and FIG. 5)

In the conventional structure described in [1] and [2] above, when the cutting height is adjusted in order to keep the cutting height at the main cutting device properly, the cutting operation position of the auxiliary cutting device is interlocked with the adjustment. The height of will also change.
For this reason, in order to keep the cutting height by the auxiliary cutting device appropriate, in the structure described in Patent Document 1, the potentiometer for detecting the swinging operation of the entire cutting frame and the relative cutting device relative to the cutting frame. A potentiometer that detects the height and a control device that calculates the appropriate adjustment allowance from the detected values of both potentiometers, and obtains the appropriate height of the sub-cutting device using a hydraulic cylinder that is activated by the output from the control device. Was controlled to be.
This structure is useful in that the cutting height of the auxiliary cutting device can be automatically adjusted regardless of the cutting height change by the main cutting device. However, since a plurality of potentiometers, various control devices, and control actuators are required in this way, the structure for controlling the adjustment operation of the sub-cutting device is complicated, and the number of expensive parts is low. Costing was difficult.
Also, 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., it is difficult to cut the pedicles near the ground sufficiently There is also.

  In the structure described in Patent Document 2, a ground sensor on the side of the secondary cutting device is provided by providing a ground sensor on the side of the secondary cutting device, and detecting a change in posture of the sensor in the shape of the warp with a potentiometer. Although it is also shown that the structure can be controlled independently, also in this case, it is the same as the structure described in Patent Document 1 that various detection means and control devices are required, It was still difficult to reduce the structural complexity and the number of parts.

  An object of the present invention is to enable cutting height control of the auxiliary cutting device to be performed separately from the main cutting device in a combine that is configured to cut the upper and lower sides of the planted stem using the main cutting device and the auxiliary cutting device. In addition, in order to be able to change the posture in conjunction with the change of the height position of the main cutting device, it is possible to reduce various sensors and simplify the structure and reduce the cost.

[Solution 1]
The technical means of the present invention devised to solve the above-described problems includes a main cutting device that reaps the planted stalk and the planted stalk at a position lower than the main cutting device. In a combine with a secondary cutting device acting on
The main cutting device is configured to be movable up and down with respect to the traveling machine body, and the sub-cutting device is supported by a lifting frame that is swingably mounted on the traveling machine body side, and is configured to be movable up and down.
The linkage state in which the sub-cutting device is raised and lowered in conjunction with the lifting operation of the main cutting device, and the linkage release state in which the sub-cutting device can be raised and lowered independently of the lifting operation of the main cutting device, The present invention is characterized by comprising linkage means capable of switching the linkage state of the lifting operation of the sub-cutting device with respect to the main cutting device.

[Action and effect]
As described above, in the combine according to the present invention according to the solution 1, the main cutting device that is swingably supported with respect to the traveling machine body is selected as a target to be equipped with the sub-cutting device. Instead, the sub-cutting device is supported so as to be swingable directly with respect to the traveling machine body using an elevating frame that is swingably mounted on the traveling machine body side.
Therefore, the sub-cutting device can independently set the ground height regardless of the swing operation of the main cutting device. In this state, even if an operation for changing the cutting height of the main cutting device is performed, the cutting height of the sub cutting device is maintained in a predetermined state regardless of this, so that the sub cutting device is compared with the main cutting device. The detection means and the control means for correcting the height change on the side of the sub cutting device accompanying the change in cutting height of the main cutting device, such as the conventional structure supporting the main cutting device, are not required.
Nevertheless, since the linkage means that can freely switch the linkage state of the lifting / lowering operation of the auxiliary cutting device with respect to the main cutting device is provided, it is necessary to link the lifting / lowering operation of the auxiliary cutting device to the lifting / lowering operation of the main cutting device. In this case, the linkage means can be operated to switch from the linkage release state to the linkage state. As a result, the auxiliary cutting device can also follow the operation in conjunction with the operation of the main cutting device that is inevitably lifted when traveling over the heel, etc. This can be done without requiring special control means.

  Therefore, regarding the height position control of the auxiliary cutting device, a control operation that is not affected by the cutting height adjustment on the main cutting device side and a control operation that is linked to the height position change on the main cutting device side are arbitrarily selected. As a result, it is possible to simplify the structure and reduce the number of parts without requiring various sensors for detecting the attitude of the sub-cutting device relative to the machine body or the height of the ground, and control means for correction. There is an advantage that can be reduced.

[Solution 2]
According to a second solving means of the combine of the present invention, as described in claim 2, the auxiliary cutting device is provided with a housing and is configured to follow the ground, and the range in which the housing contacts the ground. Thus, there is a feature in that an urging means for oscillating and urging the sub-cutting device to the upward side is provided so as to reduce the surface pressure between the housing and the grounding surface.

[Action and effect]
As described above, the combine according to the present invention according to the solving means 2 has the following effects in addition to the same effects as the invention according to the solving means 1.
In other words, since the secondary cutting device is equipped with a housing to follow the ground, the ground height of the secondary cutting device is the height that automatically follows the changes in the ground as the housing slides along the ground. Therefore, no special height detection means or height control means is required.
And since the said housing | casing is equipped with the urging means which oscillates and biases a sub-cutting device to the raising side so that the surface pressure between the housing and a grounding surface may be reduced, a farm scene is compared. There is an advantage in that it is easy to maintain the cutting height with respect to the ground contact plane even in a soft and soft state, and it is easy to ensure the required cutting height in a state that is not easily affected by the hardness and softness of the field.

[Solution 3]
According to a third solving means of the combine of the present invention, as described in claim 3, the operation portion of the linkage means for switching the linkage state of the lifting / lowering operation of the auxiliary cutting device with respect to the main cutting device is mounted on the driver's seat. It is characterized by being provided near the driver's seat within the reach of the pilot.

[Action and effect]
As described above, the combine of the present invention according to the solving means 3 has the following effects in addition to the same effects as the invention according to the solving means 1 and 2.
That is, the operation part of the linkage means for switching the linkage state of the lifting / lowering operation of the sub cutting device with respect to the main cutting device is provided within the reach of the operator's hand sitting on the driver's seat so Since it is easy to perform, switching to the linked state at the time when linked operation between the main cutting device and the sub cutting device is required, such as at the start of work, at the end of work, or when moving the machine to another field There is an advantage that can be done quickly.

[Solution 4]
According to a fourth solving means of the combine of the present invention, as described in claim 4, the linkage means for switching the linkage state of the lifting / lowering operation of the auxiliary cutting device with respect to the main cutting device is provided on the lower end side with respect to the auxiliary cutting device. A connecting portion, and a connecting portion capable of connecting and disconnecting the main cutting device and the sub-cutting device at an intermediate position closer to the upper end side than the connecting portion; It is characterized in that it is configured to include an operation unit that can be operated manually.

[Action and effect]
As described above, the combine according to the present invention according to the solving means 4 has the following effects in addition to the same effects as the invention according to the above-described solving means 1 to 3.
That is, since the linking means is supported by the sub-cutting device, whether the connecting portion of the linking means is in the connected state or in the disconnected state is checked visually. It can be easily identified. In other words, when working in a disconnected state, the operating unit frequently moves up and down due to changes in the unevenness of the field scene, and in the connected state, the operating unit does not move up and down relatively. The presence or absence of linkage status can be confirmed. In addition, when the main cutting device is lifted and operated in the linkage state, such as when over the heel, there is no change in the relative position of the operation unit, but if the linkage is released, the operation unit is not moved when the main cutting device is lifted. Since it does not follow, it can be recognized early that the linkage is in a released state.
In this way, since the presence or absence of the linked state can be identified without requiring a special display means, there is an advantage that it can be used in a state where there is little forgetting operation or erroneous operation while using a simple structure.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
〔overall structure〕
FIG. 1 shows the entire side of the combine. This combine is provided with a cutting conveyance system processing unit A that cuts a cutting target stem and conveys it to the rear of the traveling machine body 1 having a pair of left and right crawler type traveling devices 2. On the traveling machine body 1, a threshing device 12 that performs threshing and selection processing by feeding the whole cutting stalk pod supplied from the cutting and conveying system processing unit A, and grains from the threshing device 12 are stored. A boarding unit 14 equipped with a driver seat 15 is provided at a location in front of the grain bagging apparatus 13 in the traveling machine 1. An ordinary combine that threshs the whole is constructed.

[Cutting and conveying system processing section]
As shown in FIGS. 1 and 2, the cutting and conveying system processing unit A includes a cutting and conveying frame 30 that is connected to the traveling machine body 1 so as to be swingable up and down around a first axial center X1 facing left and right. The upper processing device 3 and the lower processing device 4 provided with a lifting frame 40 mounted so as to be swingable up and down around a first axial center X2 facing left and right with respect to the front portion of the traveling machine body 1.

The upper processing device 3 provided in the cutting and conveying frame 30 is equipped with a divider 31 that separates a cutting target stem and a non-cutting target stem along with traveling at both front and left and right ends. A clipper-type main cutting device 32 that cuts the planted stems to be cut guided between them, a rotary reel 33 that scrapes the target stems to the rear, and the cut target stems to be cut left and right The auger 34 gathered at a predetermined location and sent backward, and a feeder 35 fed backward toward the entrance of the rear threshing device 12 are further provided.
The upper processing device 3 swings up and down around the first axial center X1 in the left-right direction by the operation of the hydraulic cylinder 11 installed near the lower portion of the feeder 35 and the fixed portion on the traveling machine body 1 side. The cutting height can be adjusted by changing the height position of the main cutting device 32 with respect to the cutting stem to be cut by vertical swinging.

The lower processing apparatus 4 is configured as follows.
The clipper-type auxiliary cutting device 41 will be described. As shown in FIG. 2 to FIG. 4, a lifting frame 40 that can swing up and down around a second axis X <b> 2 facing left and right is located in front of the left and right sides of the front end side of the traveling machine body 1 and a position near the center in the left and right direction. It extends toward the side. Each of the elevating frames 40 is formed in a bifurcated shape with the front end branched vertically, the upper branch tip is connected by a horizontally long connecting frame 42, and the lower branch tip is clippers. It is connected to the receiving blade support base 43 of the sub cutting device 41 of the mold, and is configured to be swingable around the second axis X2 in a state where each lifting frame 40 and the sub cutting device 41 are integrally connected. It is.

  As shown in FIGS. 2 to 5, the connection frame 42 and the receiving blade support base 43 of the lower sub-cutting device 41 are provided at the left end of the horizontally long connection frame 42 that connects the upper branching tip. A bracket 44 to be connected is provided, and a transmission case 21 housing the driving device 20 for driving the auxiliary cutting device 41 is attached and fixed to the bracket 44.

On the upper part of the receiving blade body 41A fixed to the receiving blade support base 43, a movable blade 41B that slides left and right is placed. From the drive device 20, a known cutting tool such as a drive arm or a knife head is mounted. The movable blade 41B is configured to be slid and driven through a blade driving mechanism.
A transmission belt 25 is wound around a transmission pulley 21 provided on the inner side of the transmission case 21 and a relay pulley 24 provided on a relay case 23 on the body frame 10 with respect to the transmission case 21 in which the drive device 20 is housed. The engine power is transmitted by winding the transmission chain 28 over the relay sprocket 26 of the relay case 23 and the output sprocket 27 branched and transmitted from the transmission system to the upper processing device 3. is there.

  As shown in FIGS. 3 and 4, the lower processing device 4 includes a grounding housing 45 below the right end side (the already cut side) of the receiving blade support base 43. Then, as shown in FIGS. 7 to 9, the elevating frame 40 is swung to the ascending side between the elevating frame 40 at the center and the traveling machine body 1 so as to reduce the ground pressure of the housing 45. The urging means 6 for urging is provided, and the surface pressure between the housing 45 and the ground contact surface is reduced.

The urging means 6 includes an upper support 60 pivotally connected to the lifting frame 40 side, a lower support 61 swingably supported on the traveling machine 1 side, and a lower support 61 side. And a coil spring 62 mounted on the.
The upper support 60 is configured such that a short cylindrical portion 64 is integrally formed at a predetermined interval around a peripheral portion of a shaft body portion 63 having a predetermined length, and the lower support 61 is configured by the upper support 60. A cylindrical shaft portion 65 that is externally fitted to the shaft body portion 63 and is internally fitted to the cylindrical portion 64, and a flange-like member 66 that is externally fitted to the cylindrical shaft portion 65 and is mounted so as to be relatively slidable. It is configured.
The coil spring 62 is externally fitted to the outer peripheral portion of the lower support 61, and as shown in FIGS. 6 (a) and 9 (a), the sub-cutting device 41 with the lifting frame 40 lowered approaches the ground. When the working posture is reached, the coil spring 62 is compressed, and conversely, as shown in FIGS. 6 (b) and 9 (b), the elevating frame 40 is raised to a predetermined height or more, and the auxiliary cutting device 41 is moved. When it is far away from the ground, the biasing force of the coil spring 62 does not act. The state shown in FIG. 9B is a free extension state of the coil spring 62.

The urging force of the urging means 6 to the upward side by the coil spring 62 can surely reduce the ground pressure acting on the housing 45 when the grounding housing 45 is in contact with the ground. In addition, the weight of the lower processing device 4 and the biasing force of the coil spring 62 toward the ascending side are substantially balanced so that the ground pressure acts slightly on the ground surface of the housing 45.
Therefore, when the surface pressure acting on the housing 45 is slightly changed due to the unevenness of the farm scene or the like, the lower processing device 4 can be moved up and down so that the cutting operation can be performed in a so-called floating operation state. It is configured.

  As shown in FIGS. 4, 6, and 7, the lower processing apparatus 4 is connected to the upper processing apparatus 3 by a pair of left and right gas dampers 46, and is configured so that it is difficult to perform a very rapid lifting operation. is there. The maximum extension amount of the gas damper 46 is set so that the lower limit position can be set when the lower processing apparatus 4 is in the fully lowered state.

[Linkage means]
The sub-cutting device 41 provided in the lower processing device 4 is switched between a state in which the lifting / lowering operation is linked and a state in which the linkage is released with respect to the main cutting device 32 provided in the upper processing device 3. The linking means 5 is configured as follows.

As shown in FIGS. 6 to 8, the linking means 5 is a state in which a plate-like connecting member 50 that is long in the vertical direction and an intermediate portion of the connecting member 50 are connected to and disconnected from the upper processing device 3. And an engaging operation body 51 for switching the operation.
The connecting member 50 includes a connecting hole as a connecting portion 52 for the other branch end side of the elevating frame 40 on the lower end side, and the connecting member 50 is located at an intermediate position closer to the upper end side than the connecting portion 52. A long sliding hole 53 formed along the longitudinal direction of the connecting member 50 and within the longitudinal direction of the sliding hole 53 and near the lower end of the sliding hole 53 is positioned on the lateral side portion of the connecting member 50. And an engaging hole 54 as a connecting portion 54 to be connected. Further, the upper end portion opposite to the lower end side where the connection portion 52 is provided is formed in an operation portion 55 which is located near the driver seat 15 and can be gripped by the operator.
The connecting member 50 is made of a steel material having a certain degree of toughness, and is slightly swung in the left-right direction of the fuselage, that is, in the direction orthogonal to the plate surface of the connecting member 50 by grasping the operation portion 55 on the upper end side. When operated, it is bent and deformed by its own toughness, and the engaging / disengaging operation can be performed by changing the relative position between the engaging hole as the connecting portion 54 and the engaging operating body 51.

  As shown in FIGS. 10 and 11, the engagement operation body 51 has one leg portion 56 a that is movably mounted in the insertion / removal direction with respect to the cutting and conveying frame 30, and a slide hole of the connecting member 50. 53, and the other short leg portion 56b can be freely engaged with and disengaged from the engagement hole portion 54. A spring 57 for urging the short leg portion 56b out of the engagement hole portion 54 and moving it to the side.

  Therefore, in the non-engaged state of the connecting member 50 and the engaging operation body 51, the short leg portion 56b of the engaging operation body 51 is used as the connecting portion 54 as shown in FIGS. 10 (a) and 11 (a). However, when the connecting member 50 is operated slightly to the right by grasping the operating portion 55 of the connecting member 50, as shown in FIGS. 10 (b) and 11 (b), the engaging portion is engaged. The engaging hole fits into the short leg 56 b of the operating body 51. When the upper processing device 3 is raised in this state, the lower processing device 4 is lifted. In this state, the weight of the lower processing device 4 is applied to the contact surface between the engagement hole 54 and the engagement operating body 51. Even if the operation is performed and the hand is released from the operation portion 55, the engagement state between the engagement hole and the engagement operation body 51 is maintained. Of course, when the lower processing device 4 is grounded by lowering the upper processing device 3, the weight of the lower processing device 4 does not act on the contact surface, so that the connecting member 50 returns to its original toughness. The engagement state is released.

In the combine configured as described above, as shown in FIGS. 6B and 8, the lower processing device 4 is moved up and down by operating the linking means 5 when traveling over the heel. By switching to an interlocking state and raising the upper processing device 3, the lower processing device 4 is also lifted up following it.
10 and 11 is a washer for preventing one leg portion 56a inserted into the slide hole 53 from slipping out of the slide hole 53. It is a stop pin.

[Other Embodiment 1]
The linking means 5 is not limited to the one that is urged toward the disengagement side by utilizing the toughness of the connecting member 50 as shown in the best embodiment. For example, the connecting member 50 is separately formed using a spring material. It may be configured to be biased toward the engagement release side.

[Second embodiment]
The linking means 5 is not limited to that which is urged toward the disengagement side by utilizing the toughness of the connecting member 50 as shown in the best embodiment. For example, the linking means 5 is not used at all. The position may be changed between the combined position and the disengaged position, or may be separately engaged / disengaged using engaging means such as a locking pin and a pin hole.

[3 of another embodiment]
The linking means 5 is not limited to the connection part 52, the connection part 54, and the operation part 55 configured by using a series of connection members 50 as shown in the best embodiment. The apparatus 3 and the lower processing apparatus 4 are connected by a chain or the like, the chain is wound up by an electric motor by operating a command switch provided in the boarding operation unit 14, and the lower processing apparatus 4 is suspended by the upper processing apparatus 3 Then, an appropriate means can be adopted such as sufficiently loosening the chain and allowing the lower processing device 4 to freely move up and down.

Combine side view Plan view showing the entire combine Front view showing the lower processing unit Plan view showing the lower processing unit Side view showing support structure of lower processing unit Side view showing combine usage Side view showing support structure and linking means of lower processing apparatus Side view showing support structure and linking means of lower processing apparatus Notched side view showing biasing means Front view showing the operating state of the linking means The perspective view which shows the action state of a linkage means

Explanation of symbols

DESCRIPTION OF SYMBOLS 3 Upper processing apparatus 4 Lower processing apparatus 5 Linking means 6 Energizing means 30 Mowing conveyance frame 32 Main cutting apparatus 40 Lifting frame 41 Sub cutting apparatus 45 Housing 50 Connection member 51 Engagement operation body 52 Connection part 53 Slide hole 54 Engagement Joint hole 55 Operation part

Claims (4)

A combine provided with a main cutting device that cuts the planted stalk and a secondary cutting device that acts on the planted stalk at a position lower than the main cutting device,
The main cutting device is configured to be movable up and down with respect to the traveling machine body, and the sub-cutting device is supported by a lifting frame that is swingably mounted on the traveling machine body side, and is configured to be movable up and down.
The linkage state in which the sub-cutting device is raised and lowered in conjunction with the lifting operation of the main cutting device, and the linkage release state in which the sub-cutting device can be raised and lowered independently of the lifting operation of the main cutting device, A combine characterized by comprising linkage means capable of switching the linkage state of the lifting operation of the sub-cutting device with respect to the main cutting device.   The secondary cutting device is equipped with a housing and configured to follow the ground, and in the range where the housing is in contact with the ground, the secondary cutting device is configured to reduce the surface pressure between the housing and the grounding surface. The combine according to claim 1, further comprising biasing means for swinging and biasing the cutting device upward.   3. The operation part of the linkage means for switching the linkage state of the lifting / lowering operation of the sub cutting device with respect to the main cutting device is provided near the driver's seat in a range that can be reached by a driver who sits on the driver's seat. Combine as described.   The linking means for switching the linkage state of the lifting / lowering operation of the sub cutting device with respect to the main cutting device includes a connecting portion for the sub cutting device on the lower end side, and the main cutting device and an intermediate portion closer to the upper end side than the connecting portion. A connection part that can connect and disconnect from the sub-cutting device is provided, and an operation part capable of artificially operating the connection part is provided on the upper end side of the connection part. 3. Combine according to 3.

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