JPH0510577Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention is a handling depth adjustment conveyor in a combine harvester that transports the stalk culms harvested in the pre-processing section while adjusting the handling depth and supplies them to the threshing section. This relates to the mounting structure.

[Problems to be solved by the prior art and the invention] In general, this type of seed handling depth adjusting conveyor is disposed between a pretreatment section and a threshing section to convey cut stem culms to a threshing section, It is pivotally supported on the front part of the machine so as to be able to swing up and down, and the handling depth can be adjusted by adjusting the conveying attitude of the stem culm. In this way, the handling depth adjustment conveyor is controlled to swing up and down by driving the handling depth adjustment drive mechanism provided between it and the machine body.

By the way, this handling depth adjustment carrier may be removed from the aircraft for inspection and maintenance, etc., but in order to do so, conventionally, in addition to removing the power transmission connection from the engine side, the handling depth adjustment The linkage with the depth adjustment drive mechanism must also be removed, and therefore, the work of attaching and detaching the handling depth adjustment conveyor is extremely troublesome and complicated, and the workability is extremely poor.

In response to this, there are attempts to simplify the attachment and detachment of the handling depth adjustment carrier from the aircraft body.
The handling depth adjustment conveyor is used when harvesting operations require vertical swing control independent of the pre-processing section, but when the pre-processing section is raised significantly when crossing ridges, etc. It is also necessary to raise the handling depth adjustment conveyance body by a large amount, and there is no known proposal for attachment and detachment of the handling depth adjustment conveyance body that takes this into account.

[Means for Solving the Problems] In view of the above-mentioned circumstances, the present invention was devised for the purpose of providing a mounting structure for a handling depth adjusting conveyor in a combine harvester that can eliminate these drawbacks. It is equipped with a pre-processing section for reaping stem culms, and a handling depth adjusting conveyor for conveying and supplying the cut stem culms to a threshing section while adjusting the handling depth, and the pre-processing section A transmission case that covers a counter shaft that is arranged in the front part of the machine so as to face left and right in order to transmit power to the machine, and that is pivotally supported on the machine body so as to be rotatable around the axis of the counter shaft, is attached to the transmission case. In a combine that is integrated with the pre-processing section and configured to be able to independently swing up and down around the counter shaft of the pre-processing section, the combine is removably fixed to the machine body and is attached to the end of the transmission case. an auxiliary case that can be freely inserted into and removed from one end of the counter shaft in the axial direction and rotatably fitted around the shaft; A counter auxiliary shaft that can be freely inserted and removed from one side in the core direction and is connected to rotate integrally with the counter shaft, an input shaft that is interlocked and connected to the counter auxiliary shaft to transmit power to the handling depth adjustment conveyor side, and the input shaft is The input shaft case is internally installed, is fitted externally to the auxiliary case so that it can rotate freely around the axis of the counter shaft, and is further integrated with the handling depth adjustment transport body, and lowers under its own weight along with the handling depth adjustment transport body. and a stopper member for causing the pretreatment section to receive and support the handling depth adjusting conveyance body when the pretreatment section moves upward beyond the cutting height adjustment range, and the stopper member receives and supports the handling depth adjustment conveyance body. The handling depth adjustment conveyor, which can independently swing up and down within a range up to 100 degrees, can be removed together with the counter auxiliary shaft and the auxiliary case removed from the machine by pulling it out in one direction in the axial direction of the counter shaft. At the same time, an actuation bracket connected to the tip of an actuation shaft that moves forward and backward based on the drive of the drive motor is supported rotatably about the axis of the counter shaft with respect to the transmission case, and the actuation bracket and the above-mentioned When connecting the input shaft case to the input shaft case side in order to adjust the handling depth adjustment conveyor vertically by following the swinging motion of the operating bracket around the axis based on the forward and backward movement of the operating shaft, a The provided elongated hole or operating pin can be inserted into and removed from the operating pin or elongated hole provided on the actuating bracket side from one side in the axial direction, and the handling depth adjustment conveyor is received and supported by the pre-processing section. This feature is characterized in that the actuating pin is flexibly engaged and connected to allow relative rocking displacement with respect to the elongated hole as the actuating pin moves up integrally.

With this configuration, the present invention makes it possible to extremely easily attach and detach the handling depth adjusting conveyor.

[Example] Next, an example of the present invention will be described based on the drawings. In the drawings, reference numeral 1 denotes the main body of the combine harvester, and the front part of the main body 1 includes a pre-processing section 2 for reaping the stem culms, and a pre-processing section 2 for reaping the cut stem culms while adjusting the handling depth as described later. A member device such as a handling depth adjusting conveyor 4 is provided for lifting and conveying the stem culm to the feed chain 3 provided in the threshing section (not shown), and the stem culm is conveyed by the feed chain 3. The process of threshing is still the same as before.

Reference numeral 5 denotes a counter case integrally provided above the front part of the fuselage frame 1a, and the counter case 5 includes a transmission case that covers a counter shaft 6 facing in the left-right direction to which power from the engine is transmitted. The proximal end side of the counter shaft 7 is rotatably supported around the axis of the counter shaft 6. Power is transmitted to the counter shaft 6 via a bevel gear mechanism 8 to a power transmission shaft 2a on the pretreatment section 2 side. Further, 2b is a transmission shaft case (tube) for the transmission shaft 2a, and the transmission shaft case 2b is integrally fixed to the transmission case 7. Further, at the distal end of the transmission case 7, the distal end of an auxiliary case 9 whose base end is removably fixed to the fuselage frame 1a side by a fixing bolt 9a is rotatable around the axis and is attached to the distal end of the auxiliary case 9. The transmission case 7 is fitted in such a way that it can be attached and detached by inserting and removing it from one direction.
is allowed to freely rotate around the axis. The pre-processing section 2 operates the counter shaft 6 together with the transmission case 7 by the operation of the telescopic cylinder 2c interposed between the fuselage frame 1a and the transmission shaft case 2b.
By vertically moving up and down around the axis of the machine, small lifts can be made to adjust the cutting height, and large lifts can be made to non-operating positions for crossing ridges, driving on roads, turning the machine, etc. ing.

On the other hand, a counter auxiliary shaft 10 is rotatably installed inside the auxiliary case 9 by a bearing 10a, and the counter auxiliary shaft 10 and the counter shaft 6 are connected to each other by a coupler 10b fixed to the counter auxiliary shaft 10. By fitting into the counter shaft 6, the counter shaft 6 is integrally spline-fitted so that it can be inserted and removed from one side in the axial direction of the counter shaft 6. Further, on the outer periphery of the auxiliary case 9, an input shaft case 4b for the input shaft 4a on the side of the handling depth adjustment conveyor 4 is rotatably supported around the axis of the counter shaft 6, and also connected to the counter auxiliary shaft 10. Input shaft 4
Power is transmitted to a by a worm gear mechanism 13, and the handling depth adjustment conveying body 4 is
is rotatably supported around the axis of the counter shaft 6 in a state where it is independent from the pre-processing section 2 and falls under its own weight, but as described above, the fixing bolt 9a
When the counter shaft 6 is removed, by pulling it out toward one side in the axial direction of the counter shaft 6, that is, in the direction of the arrow in FIG. Its structure allows it to be removed together with the auxiliary case 9 from the side of the fuselage.

Furthermore, the transmission case 7 is provided with an actuation bracket 7a which is rotatably supported around an axis, and the tip of the actuation shaft 14 is pivotably pinned 14a to the actuation bracket 7a. There is. On the other hand, a pin 15a is swingably attached to the fuselage frame 1a.
A drive motor 16 constituting the handling depth adjustment drive mechanism of the present invention is attached to the bracket 15, and the operating shaft 14 is connected to a helical shaft 16a interlockingly connected to the motor shaft of the drive motor 16. The proximal end of is fitted in such a way that it can be moved in and out. Then, by forward and reverse driving of the drive motor 16, the operating shaft 14 is moved to the third position.
The actuating bracket 7a is configured to move forward and backward in the direction of the arrow in the figure, thereby swinging around the axis of the counter shaft 6 independently of the transmission case 7. Furthermore, an actuation pin 17, which corresponds to the actuation member of the present invention, is integrally provided on the actuation bracket 7a and projects in the left-right direction, and this actuation pin 17 is provided integrally with the input shaft case 4b. The counter shaft 6 is fitted into and engaged with a long hole 18a formed in a support plate 18, which corresponds to the support member of the present invention, so as to be able to move in and out from one side in the axial direction of the counter shaft 6. Then, the handling depth adjustment conveyor 4 descends under its own weight until one end of the elongated hole 18a (the right end in FIG. 1) is inscribed in the operating pin 17, which is set at an arbitrary position by the aforementioned motor drive. As a result, further drop of its own weight is regulated, and thereby the handling depth adjustment conveyor 4 is positioned in the handling depth adjustment posture corresponding to the set position of the operating pin 17.

Further, a stopper 19 is provided on the back side of the handling depth adjustment conveyor 4, and the stopper 19 is
In the handling depth adjustment state in which the operating pin 17 is inscribed in one end of the elongated hole 18a, the pre-processing section 2
When the pre-processing section 2 is moved upward significantly, it is abutted and supported by the transmission shaft case 2b on the side of the pre-processing section 2, and if the pre-processing section 2 is raised further, the handling depth adjustment conveyor 4 is moved up from the pre-processing section. It is configured to move upward integrally with section 2. In this case, the drive motor 16
If there is no operation, the operating pin 17 will not swing together with the operating bracket 7a, and the support plate 18 will undergo a relative swinging displacement. This is accommodated by the relative movement of the support plate 18a toward the other end, thereby allowing the relative movement of the support plate 18.

In the embodiment of the present invention constructed as described above, the handling depth adjustment conveyor 4 can independently adjust the handling depth by swinging the operating bracket 7a as the drive motor 16 is driven forward and backward. In addition, the pre-processing section 2 can independently adjust the cutting height by operating the telescopic cylinder 2c, and in this case, the pre-processing section 2 can perform a swinging motion about the axis of the counter shaft 6. This will be accomplished through action.

In this way, in the present invention, the handling depth adjustment conveyor 4 and the pretreatment section 2 are designed to be able to swing independently, and can be handled in conjunction with the cutting height adjustment. This can reliably avoid problems such as displacement of the depth adjustment carrier, but when removing the depth adjustment carrier 4 from the machine for inspection and maintenance etc., first tighten the fixing bolts 9a. After removing it, the handling depth adjustment carrier 4 can be pulled out to the side of the machine (in the direction of the arrow in Fig. 2), thereby removing the auxiliary case 9 from the transmission case 7 and the counter shaft 6. As each counter auxiliary shaft 10 comes out, the handling depth adjustment conveyor 4
can be removed sideways from the fuselage main body 1 extremely easily, and there is no need for the troublesome and complicated work of releasing these connections one by one, but rather it is possible to lift them upward to release the connections. Furthermore, there is no need to secure a lifting space in advance on the outer circumferential side of the transmission case 7, and the components and devices can be arranged close to each other.

Moreover, when removing the handling depth adjustment conveyor 4, the connection between the handling depth adjustment conveyor 4 and the handling depth adjustment drive mechanism also requires that the handling depth adjustment conveyor 4 be pulled out to the side of the machine. Therefore, the support plate 18 on the handling depth adjustment conveying body 4 side comes off the operating pin 17 on the handling depth adjustment drive mechanism side, and the connection between the two is released. Therefore, although the handling depth adjustment conveyance body 4 is connected to the handling depth adjustment drive mechanism so that the handling depth can be adjusted independently of the pretreatment section 2, the handling depth adjustment conveyance body There is no need for any special removal work from the handling depth adjustment drive mechanism of No. 4. Moreover, when installing the removed handling depth adjustment conveyor 4, the operating pin 17 may be fitted into the elongated hole 18a and assembled.
Therefore, the handling depth adjusting conveyor 4 can be easily assembled, and workability can be significantly improved.

In addition, in this case, when the pretreatment section is moved up significantly when the machine is rotating or traveling on the road, the stopper 19 comes into contact with the transmission shaft case 2b midway, and the handling depth adjustment conveyor 4 is It is supported by the pre-processing section 2, and when the pre-processing section 2 is further raised, the handling depth adjustment conveyor 4 also moves upward together.
There is no need to swing the actuating bracket 7a with 7. In other words, the handling depth adjustment conveyor 4 is
When the actuating bracket 7a moves up integrally with the
If the support plate 18 does not follow this, the support plate 18 will move relative to the operating pin 17, but this relative movement can be accommodated by moving the operating pin 17 toward the other end within the elongated hole 18a. be done. Therefore, there is no problem even if the handling depth adjustment conveyance body 4 is moved up together with the pretreatment section 2 without operating the handling depth adjustment drive mechanism, and the lifting movement can always be performed smoothly. . Further, when the pre-processing section 2 that has been moved upward is returned to the working height, the handling depth adjustment conveyor 4, which descends under its own weight, returns to the handling depth adjustment position before rising together with the pre-processing section 2. When reaping work is resumed after the pre-processing section has been temporarily lifted for inspection and maintenance, readjustment of the handling depth adjustment conveyor 4 is no longer necessary, resulting in a significant increase in work efficiency. Improvement will be measurable.

Furthermore, in this case, the operating pin 17 is in the elongated hole 18a.
Since this structure supports the handling depth adjustment conveyor 4 which attempts to lower its own weight by contacting the end of the handling depth, the load on the members of the drive motor 16 on the adjustment drive mechanism side for adjusting the handling depth is also reduced. With only a small amount, the handling depth can be adjusted smoothly.

Incidentally, the present invention is not limited to the above-mentioned embodiment, and the operating bracket 7 on the handling depth adjustment drive mechanism side
As a means for accommodating the input shaft case 4b on the handling depth adjustment conveying body side, the support member on the input shaft case side can be a pin type, and the operation bracket can also be configured as a plate member with a long hole. It goes without saying that there is.

[Operations and Effects] In summary, since the present invention is constructed as described above, the handling depth adjusting conveyance body and the pre-processing section each independently vertically swing around the axis of the counter shaft. In particular, there is no problem in which the handling depth adjustment conveyor is displaced and the handling depth changes in conjunction with the cutting height adjustment.

Moreover, in this case, when removing the handling depth adjustment carrier from the aircraft for inspection and maintenance, etc., after removing the fixation of the auxiliary case from the aircraft side, move the handling depth adjustment carrier to one side in the axial direction of the counter shaft. By simply pulling it out, the handling depth adjustment carrier can be removed to the side of the machine along with the auxiliary case and counter auxiliary shaft. Therefore, all that is needed is enough space to pull it out to the side of the machine. Unlike the case where the engagement is released by lifting the transmission case upward, there is no need to secure a lifting space in advance on the outer circumferential side of the transmission case, and it is possible to arrange the parts and devices close to each other.

Moreover, when the handling depth adjustment conveyance body is removed, the connection with the actuation bracket, which is interlocked and connected to the drive motor side in order to transmit the motor driving force to the handling depth adjustment conveyance body, is also required. The elongated hole or operating pin provided in the input shaft case can be inserted into and removed from the operating pin or elongated hole on the operating bracket side from one side in the axial direction, and when the handling depth adjustment conveyor is removed. Therefore, although the handling depth adjustment conveyor is connected to the drive of the drive motor and the handling depth can be adjusted independently of the pre-processing section, the handling depth is No special attachment/detachment work is required from the drive motor side of the adjustment conveyance body, and the workability of the detachment work is not impaired.

In addition, when the pre-processing section is raised beyond the cutting height for on-road driving, etc., the handling depth adjustment conveyor is received and supported by the pre-processing section and moves up integrally. In this case, the engagement and connection between the operating pin and the elongated hole for transmitting the driving force for adjusting the handling depth to the handling depth adjustment conveying body allows a rocking displacement relative to the elongated hole of the operating pin. As a result, the handling depth adjustment conveyor can move up together with the pre-processing section without driving the drive motor, allowing for reliable and quick upward movement of the handling depth adjustment conveyor. will be done. Then, when the pretreatment section is returned to the working height, the handling depth adjustment conveyor, which descends under its own weight, returns to the handling depth adjustment position before raising the pretreatment section above the working height. This eliminates the need to readjust the handling depth adjustment conveyor when reaping work is resumed after the pretreatment section has been temporarily lifted for inspection and maintenance, resulting in a significant improvement in work efficiency. It will be possible to measure it.

[Brief explanation of the drawing]

The drawings show an embodiment of the mounting structure of the handling depth adjustment conveyor in a combine harvester according to the present invention, in which Fig. 1 is a front side view of the combine, and Fig. 2 is a sectional view of the counter shaft part. , FIG. 3 is a sectional view of the main part of the adjustment mechanism, and FIG. 4 is an explanatory diagram of its operation. In the figure, 2 is a pre-processing section, 4 is a handling depth adjustment conveyor,
4b is an input shaft case, 6 is a counter shaft, 7 is a transmission case, 7a is an operating bracket, 9 is an auxiliary case, 10 is a counter auxiliary shaft, 16 is a drive motor, 17 is an operating pin, 18a is a long hole, 19 is a stopper It is.

Claims (1)

[Scope of utility model registration request] The present invention includes a pre-processing section for reaping stem culms, and a handling depth adjusting conveyor for conveying the cut stem culms to a threshing section while adjusting the handling depth, and transmits power to the pre-processing section. A transmission case is integrated with the preprocessing section, which covers a counter shaft that is preferably arranged at the front of the machine so as to face in the left-right direction, and which is pivotally supported on the machine body so as to be rotatable around the axis of the counter shaft. In a combine harvester that is configured to be able to swing up and down independently around the counter shaft of the pre-processing section, the counter shaft is detachably fixed to the machine body, and the counter shaft is attached to the end of the transmission case. An auxiliary case that can be freely inserted and removed from the shaft from one side in the axial direction and fitted so as to be rotatable around the shaft; a counter auxiliary shaft that is freely connected to rotate integrally with the counter shaft; an input shaft that is interlocked and connected to the counter auxiliary shaft to transmit power to the handling depth adjustment conveyance body; The input shaft case is fitted onto the auxiliary case so as to be rotatable around the axis of the shaft, is integrated with the handling depth adjustment conveyor, and is lowered under its own weight along with the handling depth adjustment conveyor, and the preprocessing section. A stopper member is provided for causing the handling depth adjustment conveyance body to be received and supported by the pre-processing section when it is upwardly moved beyond the mowing height adjustment range, and within the range until it is received and supported by the stopper member. The handling depth adjustment conveyor, which can independently swing up and down, can be removed integrally with the counter auxiliary shaft and the auxiliary case removed from the machine by pulling it out in one direction in the axial direction of the counter shaft. An operating bracket to which the tip of an operating shaft that moves forward and backward based on the drive of In order to connect the handling depth adjustment conveyor for vertical swing adjustment following the swing movement of the operating bracket around the axis based on the forward and backward movement of the operating shaft, an elongated hole or The operating pin can be freely inserted into and removed from the operating pin or the long hole provided on the operating bracket side from one side in the axial direction, and the handling depth adjustment conveyor is received and supported by the pre-processing section and is integrally raised. A mounting structure for a handling depth adjusting conveyor in a combine harvester, characterized in that the working pin is engaged and connected in a flexible manner to allow relative rocking displacement of the operating pin with respect to the elongated hole as the operating pin moves.