JP2014087318A - Combine-harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine-harvester in which an operation clutch lever interlocks with a throttle lever only when the operation clutch lever is switched from a dwell position to a work position and otherwise, the operation clutch lever and the throttle lever operate independently, and which has an operation part to realize this operation less expensively, in order to solve the problem that when the operation clutch lever and the throttle lever are connected with mechanical elements, they are always interlocked, or when the interlock is established under electronic control, it costs too much.SOLUTION: A combine-harvester established interlocked operation between an operation clutch lever (13) and a throttle lever (11) by means of a connection rod (14) and causes an engine (E) to shift from an idling state to a rated rotation state only when a user switches the operation clutch lever (13) from a cutoff position to a connection position.

Description

  The present invention relates to a combine.

  A conventional combine employs a mechanism that links and interlocks a working clutch lever for threshing and the like and a throttle lever for controlling the engine speed using a mechanical element such as a wire (Patent Document 1). Further, a controller that detects the operating position of the work clutch lever using an electronic control means and controls the engine speed based on the detected value is employed (Patent Document 2). With these configurations, when the combine user moves the operation clutch lever to the operation position, that is, the connection position in order to perform the cutting or threshing operation, the engine speed of the combine automatically increases and the necessary power is supplied. It becomes like this.

Japanese Utility Model Publication No. 61-83834 Japanese Utility Model Publication No. 61-40837

  When the working clutch lever and the throttle lever are connected using mechanical elements, the working clutch lever and the throttle lever are always linked, and fine adjustment of the throttle lever is possible with the working clutch lever in the connected position. It becomes difficult to do. In addition, in the case of electronic control, it is necessary to provide a detector for detecting the state of the work clutch lever, which raises the problem of high costs. Therefore, when operating the work clutch lever from the disconnected position to the connected position, the work clutch lever and the throttle lever are interlocked, and in the case of other work clutch lever operations, the work clutch lever and the throttle lever operate independently. An object of the present invention is to provide a combine having an operation unit capable of realizing this operation at low cost.

The present invention has taken the following technical means to solve the above problems.
That is, the invention described in claim 1 is provided with a cutting part (4) on the front side of the machine body frame (2) supported by the traveling part (3), and a threshing part (1) on the left and right sides of the machine body frame (2). 5), a storage part (6) provided with a Glen tank (6a) is provided on the left and right sides, and an operation part (7) is provided on the front side of the storage part (6). In the combine provided with the engine (E) below, the operating unit (7) is connected to a working clutch provided in a driving force transmission path to the working unit such as the cutting unit (4) and the threshing unit (5). A process comprising a work clutch lever (13) for performing a shut-off operation and a throttle lever (11) for manually adjusting the rotational speed of the engine (E), wherein the work clutch lever (13) is operated from the shut-off position to the connected position. Then, interlocked with the operation of the working clutch lever (13) When the throttle lever (11) is moved to the side for increasing the rotational speed of the engine (E) and the work clutch lever (13) is in the shut-off position and the connection position, the operation of the work clutch lever (13) is performed. The combine is characterized in that it is configured to be able to manually operate the throttle lever (11) arbitrarily after the interlocking by is released.

  According to a second aspect of the present invention, the connecting rod (14) that operates in conjunction with the operation of the work clutch lever (13) in the process of operating the work clutch lever (13) from the disconnected position to the connected position. The engagement pin (22) is actuated via the valve, and the engagement pin (22) engages with the throttle lever (11) to move the throttle lever (11), so that the engine (E) When the rotation speed is increased to a predetermined operation rotation speed and the operation clutch lever (13) is in the disconnected position and the connection position, the engagement of the engagement pin (22) and the throttle lever (11) is released. The combine according to claim 1, which is configured.

  According to a third aspect of the present invention, in the process of operating the work clutch lever (13) from the shut-off position to the connection position, the rotation speed of the engine (E) is predetermined before the connection of the work clutch is completed. The combine according to claim 1 or 2, wherein the combine is configured to reach a work rotation speed of.

  According to a fourth aspect of the invention, the throttle lever (11) and the traveling speed of the fuselage are shifted from the front to the left and right sides of the driver seat (9) provided in the driver (7). The HST lever (18) and the work clutch lever (13) are arranged in this order, and the connecting rod (14) is arranged around the rotation fulcrum of the HST lever (18) downward. It is the described combine.

  According to a fifth aspect of the present invention, the working clutch lever (13) is moved by changing a mounting position of a throttle wire (20) connecting the throttle on the engine (E) side and the throttle lever (11). The combine according to any one of claims 1 to 4, wherein the speed increase rotational speed of the engine (E) after being operated from the cutoff position to the connection position can be changed.

  According to a sixth aspect of the present invention, the throttle lever (11) in a process in which the working clutch lever (13) is changed from the disconnected position to the connected position by adjusting the length of the connecting rod (14). The combine according to claim 2 or 4, wherein the amount of movement of (2) can be adjusted.

  According to the first aspect of the present invention, in the process in which the user operates the work clutch lever (13) from the disconnection position to the connection position, the throttle lever (11) is operated in conjunction with the operation of the work clutch lever (13). Since it moves to the side where the rotation speed of (E) is made compatible, the output of (E) is insufficient at the start of work, and it is possible to prevent problems such as engine stall or clogging in the work section. Efficiency can be increased. Further, in the state where the work clutch lever (13) is in the disconnected position and the connected position, the interlock by the operation of the work clutch lever (13) is released and the throttle lever (11) can be arbitrarily operated manually. Accordingly, the rotational speed of the engine (E) can be finely adjusted.

  According to the second aspect of the invention, in order to achieve the effect of the first aspect of the invention, the engagement pin (14) is operated via the connecting rod (14) that operates in conjunction with the operation of the work clutch lever (13). 22) is activated, and the engaging pin engages with the throttle lever (11) to move the throttle lever (11), thereby increasing the rotational speed of the engine (E) to a predetermined working rotational speed, When the work clutch lever (13) is in the disconnected position and the connected position, the engagement pin (22) and the throttle lever (11) are disengaged, so the work clutch lever (13) and the throttle lever (11) This interlocking structure can be simplified, and can be realized at a lower cost compared to the case of electronic control.

  According to the invention of claim 3, in addition to the effect of the invention of claim 1 or claim 2, in the process of operating the work clutch lever (13) from the shut-off position to the connection position, the connection of the work clutch When the rotation speed of the engine (E) reaches a predetermined work rotation speed before the operation is completed, the engine (E) is operated at a work rotation speed before the work clutch is connected and a load is applied to the engine (E). Therefore, engine drop can be prevented and work efficiency is increased.

According to the invention described in claim 4, in addition to the effect of the invention described in claim 2, the connecting rod (14) is pivoted on the HST lever (18) so as to avoid interference with the HST lever (18). By detouring downwardly, the throttle lever (11) and the work clutch lever (13) can be placed back and forth across the HST lever (18) that is frequently used during work. The amount of movement of the hand can be reduced and the operation can be streamlined. By placing the throttle lever (11) in the foremost position of the three levers, the rotational speed of the engine (E) can be confirmed and the workload can be increased. It can be easily fine-tuned to the corresponding rotation speed.

  According to the invention described in claim 5, in addition to the effect of the invention described in any one of claims 1 to 4, the throttle wire that connects the throttle on the engine (E) side and the throttle lever (11). By changing the mounting position of (20), it is possible to change the acceleration rotational speed of the engine (E) after the work clutch lever (13) is operated from the shut-off position to the connection position, so that the work clutch lever can be changed. The user can select the state of the engine (E) when the switching of (13) is completed, and work efficiency can be improved.

  For example, when performing a handling operation, setting the engine (E) at a lower rotational speed than a normal cutting operation makes it easier to supply the handling cereal and ensures safety, so that the throttle wire (20 ) Is changed so that the engine (E) is in a rotational state lower than the rated rotational state of the cutting operation when the work clutch (13) is operated to the connected position. Then, the engine can be brought into the engine rotation state according to the above setting only by operating the work clutch (13).

  According to the invention described in claim 6, in addition to the effect of the invention described in claim 2 or claim 4, the working clutch lever (13) is moved to the cutoff position by adjusting the length of the connecting rod (14). Since the amount of movement of the throttle lever (11) in the process of changing from the connection quality to the connection quality can be adjusted, the rotation speed of the engine (E) when the switching of the work clutch lever (13) is completed can be appropriately selected. , Can increase the work efficiency.

It is the whole combine front view. It is a whole side view of the combine of FIG. FIG. 2 is an overall plan view of the combine of FIG. It is a side view for operation | movement description of the combine operation part concerning 1st embodiment of this invention. It is an enlarged view of the operation part of FIG. It is a top view of the operation part of FIG. 4 which described the HST lever. It is a side view of the operation part of Drawing 4 showing an HST lever. It is a side view which shows detailed operation | movement of the work clutch lever of the operation part of FIG. It is a side view of the combine operation part concerning 2nd embodiment of this invention. It is a side view of the combine operation part concerning 3rd embodiment of this invention. It is a side view of the combine operation part concerning 4th embodiment of this invention. It is a side view of the combine operation part concerning 5th embodiment of this invention.

  Embodiments specifically configured based on the above technical idea will be described below with reference to the drawings. In this case, unless otherwise specified, it is referred to as left and right from the aircraft toward its forward direction.

  A conventional combine is shown in FIGS. 1 is an overall front view of a conventional combine, FIG. 2 is an overall side view of the combine, and FIG. 3 is an overall plan view. The combine of the conventional example is provided with a cutting part 4 that cuts cereal grains on the front side of the machine frame 2 supported by the traveling unit 3 constituted by a crawler, and the harvested grain supplied from the cutting unit 4 on the left side of the machine frame 2 The threshing unit 5 for processing the straw is provided with the operation unit 7 and the storage unit 6 on the right side from the front. And this storage part 6 is equipped with the Glen tank 6a which stores the grain threshed in the threshing part 5. FIG.

  The said cutting part 4 is comprised by the expansion-contraction cylinder by hydraulic drive so that raising / lowering is possible with respect to a soil surface. The threshing unit 5 separates the cereal grains from the cereal grains by a handling process, and the separated cereal grains pass through the handling net and are subjected to wind sorting by blowing air from the tang. A diesel engine E is disposed in front of the storage unit 6. The user of the combine usually sits on the driver's seat 9 of the driving unit 7 disposed above the engine E, operates the combine, and performs a series of operations such as running and cutting.

  The engine E generates power for driving driving units such as the traveling unit 3, the cutting unit 4, and the threshing unit 5. The engine E is provided with a cooling fan and a radiator on the right side thereof.

  FIG. 4 is a right side view for explaining the operation of the combine operation unit according to the first embodiment of the present invention. However, members other than those necessary for the description are omitted. FIG. 4A shows a state in which the work clutch lever 13 is in the shut-off position and the throttle lever 11 is in the idling position. At this time, the engine E is in a normal idling state. FIG. 4B shows a state in which the work clutch lever 13 is in the connected position and the throttle lever 11 is in the maximum rotation position. At this time, the engine E is in the maximum rotation state.

FIG. 5 shows an enlarged view around the throttle lever 11 of the operation unit shown in FIG. FIG. 5 shows two states such as the arm throttle 12 and the connecting rod 14. The solid line shows the case where the engine E is in the rated rotation state, and the dotted line shows the case where the engine E is in the idling position. Note that the throttle lever 11 in FIG. 5 shows a state in which the combine user operates the rated rotational position to the maximum rotational position. The engine E is in the rated rotational state. The rotation state suitable for performing in the field.

  In FIG. 4, the right side is the rear of the combine body and the left side is the front of the body. In the first embodiment, the work clutch lever 13 is a cutting and releasing lever that turns on and off the power of the reaping part 4 and the threshing part 5 by the working clutch. The work clutch lever 13 is provided so as to be rotatable about a work clutch rotating shaft 26, and the upper part of the work clutch lever 13 is gripped and operated by a combine user. A connecting portion with a threshing clutch pulley 27 for turning on and off the power of the threshing portion 4 is provided on the side where the grip portion of the user is provided across the work clutch rotation shaft 26, and the connecting rod 14 is provided on the side opposite to the gripping portion. Fix it so that it can rotate freely.

The other end of the connecting rod 14 is rotatably fixed to one end portion of the arm throttle 12, and a connecting portion with the cutting clutch pulley 28 is provided at this portion. The arm throttle 12 is fixed to a frame so as to be rotatable about an arm throttle rotation shaft 21, and a pin supporter 23 having an engagement pin 22 is provided at the other end of the arm throttle 12. The pin supporter 23 is provided so as to be rotatable with respect to the arm throttle 23 by a pin supporter rotating shaft 24 and has an engagement pin 22 for engaging with a V-shaped recess 11 a at the lower end of the throttle lever 11. ing. The engaging pin 22 is pressed against the arm throttle 12 by a pin torsion spring 25 fitted to the pin supporter rotating shaft 24.

  FIG. 6 is a plan view showing a state in which the HST lever 18 for shifting the traveling speed of the combine body is described in the operation unit of FIG. 4, and FIG. 7 is a side view showing the state in which the HST lever 18 is described. FIG. 8 is a side view showing the detailed operation of the work clutch lever 13 of the operation unit in FIG.

  The driver 7 is provided with a driver's seat 9 for a combine user to sit, and the throttle lever 11, the HST lever 18, and the work clutch lever 13 are arranged in this order from the front side on the left side of the driver's seat 9. In this case, the connecting rod 14 that interlocks the operations of the throttle lever 11 and the work clutch 13 lever is disposed below the rotation fulcrum of the HST lever 18 so as to avoid interference with the HST lever 18. In order to facilitate the avoidance of interference, the connecting rod 14 is formed in a curved shape so that two bent portions are provided and the central portion is positioned below.

  By disposing the connecting rod 14 below the rotation fulcrum of the HST lever 18 so as to avoid interference with the HST lever 18, it is not necessary to change the arrangement of the conventional levers, and the operation so far It is possible to prevent a user who has become accustomed to the operation error.

  The operation of the combine operation unit according to the first embodiment of the present invention will be described with reference to FIGS. Before the cereal harvesting operation, the work clutch lever 13 is in a rest position (blocking position), that is, in a state 13a in FIG. In this case, since the throttle lever 11 is also in the idling position, the engine E is in the idling state except when the accelerator is opened with the accelerator pedal. The combine user grips the upper portion of the work clutch lever 13 when entering the cutting operation, rotates the work clutch lever 13 about the work clutch rotation shaft 26, and moves to the work position 13b in FIG. Connection position). As shown in FIG. 8, the transmission of power to the mowing unit 4 and the threshing unit 5 is such that the power starts to be transmitted when the lower portion of the gripping portion of the work clutch lever 13 is vertical, that is, when the posture is 13c. Adjust to. The power transmission is completed when the portion has a left 30 ° posture, that is, a 13d posture. By adjusting in this way, it becomes easy to apply a load to the work clutch lever 13, and operation becomes easy. Here, “power transmission is completed” means a working state in which power necessary for operating the mowing unit 4 and the threshing unit 5 is supplied and the work can be started.

When operating the work clutch lever 13 from 13a to 13b, the threshing clutch pulley 27 operates in conjunction with the work clutch lever 13, power is supplied to the threshing portion 5, and the connection coupled to the lower end of the work clutch lever 13 The rod 14 moves to the rear of the aircraft as a whole. When the connecting rod 14 moves, the arm throttle 12 that is rotatably coupled to the connecting rod 14 is tilted to the right in FIG. It rotates counterclockwise about the shaft 21 and becomes a vertical state (the state of the solid line in FIG. 5) as shown in FIG. At this time, the cutting clutch pulley 28 operates in conjunction with the operation of the arm throttle 12, and power is supplied to the cutting unit 4. At the same time, the engagement pin 22 at the upper end of the arm throttle 12 abuts on the front side of the body inside the V-shaped recess 11a at the lower end of the throttle lever 11, and the throttle pin 11 is moved to the rated rotational position by the engagement pin 22. It becomes like this. At this time, the length of the front portion of the throttle lever 11 is determined so that the engaging pin 22 is disengaged from the V-shaped recess 11a of the throttle lever 11 when the throttle lever 11 is at the rated rotational position.

  In addition, after the throttle lever 11 reaches the rated rotation position, that is, after the engine E enters the rated rotation state, the work clutch lever 13 completes switching to the work state, that is, power transmission to the cutting unit 4 is completed. Adjust to

  When the user operates the throttle lever 11 in the state shown in FIG. 4B, that is, from the rated rotation position to the maximum rotation position in the clockwise direction, the inner side of the rear side portion of the throttle lever 11 is the engagement pin 22. Although it comes into contact, when it comes into contact with the engagement pin 22, the engagement pin 22 rotates together with the pin supporter 23 that fixes the engagement pin 22 around the pin supporter rotation shaft 24 to escape. become. Since the engagement pin 22 escapes, the arm throttle 12 and the connecting rod 14 are not affected even if the throttle lever 11 is rotated clockwise. Since the pin torsion spring 25 fitted to the pin supporter rotating shaft 24 normally biases the engagement pin 22 toward the pin supporter 23, when the engagement pin 22 is separated from the throttle lever 11, the engagement pin 22 is biased toward the pin supporter 23. 22 and the pin supporter 23 return to the normal position.

The combine user can also turn the throttle lever 11 from the rated rotational position to the idling position, that is, to turn the throttle lever 11 counterclockwise. In this case, since the front side portion of the V-shaped recess of the throttle lever 11 is separated from the engagement pin 22, the arm throttle 12 and the connecting rod 14 are not affected.

  With the above configuration, only when the user operates the work clutch lever 13 from the rest position to the work position, the operation of the work clutch lever 13 and the throttle lever 11 is interlocked by the connecting rod 14 and the engine E is idled. When the working clutch lever 13 is operated to the working position by shifting from the state to the rated rotational state, the engine E is always in the rated rotational state, so that the cutting operation is performed while the engine E is in the idling state. Can be avoided. Even in this case, the throttle lever 11 can be finely adjusted regardless of the state of the work clutch lever 13.

  Further, by mechanically connecting using the connecting rod 14, the operation can be realized at a lower cost than in the case of electronic control.

  When the user operates the work clutch lever 13 from the rest position to the work position, the cutting part 4 is brought into the rated rotation state by setting the engine E to the rated rotation state before the switching of the work clutch lever 13 to the work state is completed. Etc. start to operate, and before the engine E is loaded, the engine E enters the rated rotation state, and the engine speed is not reduced. This can prevent the engine E from being inadvertently stopped during work.

  In the first embodiment, the work clutch lever 13 is a mowing lever, but it can also be a mowing lever that performs only turning on / off of the power of the mowing unit 4 or a threshing lever that performs only turning on / off of the power of the threshing unit 5.

  Further, after the throttle lever 11 reaches the rated rotational position, the working clutch lever 13 is adjusted so as to complete the switching to the working state. Conversely, after the working clutch lever 13 completes the switching to the working state, the throttle is It is also possible to adjust the lever 11 so that it is at the rated rotational position. In this case, the belt load can be reduced because the operation state is switched to a state where the rotational speed is low.

  FIG. 9 is a side view of the combine operation unit according to the second embodiment of the present invention, FIG. 10 is a side view of the combine operation unit according to the third embodiment of the present invention, and FIG. The side view of the combine operation part concerning four embodiment is shown. The difference between the first embodiment and these second, third, and fourth embodiments is that the fixed position of the throttle wire 20 that operates the engine speed can be changed.

The throttle wire 20 is fixed to the throttle wire fixing plate 15, and the fixing position of the throttle wire 20 can be changed by changing the mounting angle of the throttle wire fixing plate 15 to the frame. The attachment angle of the throttle wire fixing plate 15 is set to two stages in the second embodiment by making the bolt hole an elongated hole, and to three stages in the third embodiment.

  The two stages of the second embodiment are a case where the engine E is in a rated rotation state and a case where the engine E is in a handling operation rotation state having a lower rotational speed than the rated rotation state. In the three stages of the third embodiment, a case where the engine E reaches the maximum rotation state is added to these two stages. In the fourth embodiment, the adjustment lever 16 of the throttle wire fixing plate 15 can be provided to perform adjustment steplessly.

By changing the fixed position of the throttle wire 20 that adjusts the rotational speed of the engine E, the operating state of the engine E can be changed when the user operates the work clutch lever 13 from the rest position to the work position. Thus, the user can select the state of the engine E when the switching of the work clutch lever 13 is completed, and work efficiency can be improved.

For example, when performing a handling operation, it is easier to ensure safety when the engine E is in a lower state than the rated rotation state. Therefore, by adjusting the throttle wire fixing plate forward, the throttle wire 20 When the fixed position is changed and the user operates the work clutch lever 13 to the work position, the engine E is set to a rotational state lower than the rated rotational state. The engine can be rotated according to the above setting simply by operating the work clutch lever 13 by the user.

  FIG. 12 shows a side view of the combine operation unit according to the fifth embodiment of the present invention. The difference from the first embodiment is that the length of the connecting rod 14 can be adjusted. By making the length of the connecting rod 14 adjustable, the operation amount of the throttle lever 11 can be adjusted. The connecting rod 14 has two bent portions, and in the fifth embodiment, the length of the connecting rod 14 can be adjusted by a screw mechanism of a bolt and a nut at the center thereof. In another embodiment, it is possible to provide an adjustment mechanism on the side close to the throttle lever 11 or on the side close to the work clutch lever 13 instead of the central portion of the connecting rod 14.

Since the length of the connecting rod 14 can be adjusted and the operation amount of the throttle lever 11 can be adjusted by the combine user, the user can select the state of the engine E when the switching of the work clutch lever 13 is completed. , Can increase the work efficiency.

DESCRIPTION OF SYMBOLS 1 Combine 2 Airframe frame 3 Traveling part 4 Cutting part 5 Threshing part 6 Storage part 7 Driving part 7a Driver's seat 11 Throttle lever 13 Work clutch lever 14 Connecting rod 18 HST lever 22 Engaging pin E Engine

Claims (6)

A cutting part (4) is provided on the front side of the body frame (2) supported by the traveling part (3),
A threshing part (5) is provided on one side of the machine frame (2) on the left and right sides, and a storage part (6) provided with a glen tank (6a) is provided on the other side of the left and right sides. A driving part (7) is provided,
In the combine provided with the engine (E) below the operation part (7),
A working clutch lever (13) for connecting and disconnecting a working clutch provided in a driving force transmission path to the working part such as the reaping part (4) and the threshing part (5) in the operating part (7);
A throttle lever (11) for manually adjusting the rotational speed of the engine (E),
In the process where the working clutch lever (13) is operated from the disconnected position to the connected position, the throttle lever (11) increases the rotational speed of the engine (E) in conjunction with the operation of the working clutch lever (13). Move to the side,
When the working clutch lever (13) is in the disconnected position and the connected position, the interlock by the operation of the working clutch lever (13) is released and the throttle lever (11) can be manually operated arbitrarily. Combine with. In the process where the working clutch lever (13) is operated from the disconnected position to the connected position,
The engagement pin (22) is actuated via the connecting rod (14) that operates in conjunction with the operation of the working clutch lever (13),
The engagement pin (22) engages with the throttle lever (11) to move the throttle lever (11),
Increasing the rotational speed of the engine (E) to a predetermined work rotational speed,
In the state where the working clutch lever (13) is in the disconnected position and the connected position,
The combine according to claim 1, wherein the engagement pin (22) and the throttle lever (11) are disengaged. In the process where the working clutch lever (13) is operated from the disconnected position to the connected position,
The combine according to claim 1 or 2, wherein the rotation speed of the engine (E) reaches a predetermined work rotation speed before the connection of the work clutch is completed. On the left and right sides of the driver seat (9) provided in the driver (7),
From the front side, the throttle lever (11), the HST lever (18) for shifting the traveling speed of the aircraft, and the working clutch lever (13) are arranged in this order,
The combine according to claim 2, wherein the connecting rod (14) is arranged by detouring downward about the pivot point of the HST lever (18). By changing the mounting position of the throttle wire (20) connecting the throttle on the engine (E) side and the throttle lever (11),
5. The structure according to claim 1, wherein the engine speed (E) after the operation clutch lever (13) is operated from the shut-off position to the connection position can be changed. 6. Combine. By adjusting the length of the connecting rod (14),
The combine according to claim 2 or 4, wherein the amount of movement of the throttle lever (11) in the process of changing the working clutch lever (13) from the shut-off position to the connected position can be adjusted.