JP5060140B2 - Combine - Google Patents

Description

  The present invention relates to an improvement of a combine in which a screw conveyor is used as a grain carry-out device for sending grains stored in a grain tank to a discharge port side and the screw conveyor can be folded.

  In the combine comprised as mentioned above, the screw conveyor as a grain carrying-out apparatus can carry out a grain in the attitude | position extended, and can be compactly accommodated on a body with a two-fold folding attitude | position. Therefore, for example, the overall structure of the grain unloading device is simplified compared to the case of adopting a structure that can be expanded and contracted as a screw conveyor, and adopting a structure that can change the transport distance to the discharge port by expansion and contraction of the screw conveyor itself This is advantageous in that it can be configured (see Patent Document 1).

JP-A-11-206235 (paragraph number [0011], FIG. 2)

As described above, when a configuration that can be folded in a bi-folding posture is adopted as the screw conveyor, there are the following problems.
In other words, if the screw conveyor is accidentally driven in the folded position, the grains remaining in the screw conveyor and the grains in the grain tank spill out from the two folding points and scatter on the aircraft. There is a fear. In the folded state, the screw conveyor is not supported by a support structure that is planned to drive the screw conveyor, so that the drive load of the screw conveyor acts as an uneven load due to the uneven distribution of grains being transported, etc. There is a risk of causing inconvenience such as damage or deformation of the portion.

  The object of the present invention is to avoid the scattering of the grain from the two-folded position and the damage or deformation of the screw conveyor in the two-folded position when the screw conveyor that can be folded in the two-folded position is adopted as the grain conveying device. Is to make it.

The technical means of the present invention taken in order to achieve the above object has the following structural features and operational effects.
[Solution 1]
The combine according to the present invention is a combine equipped with a screw conveyor that conveys the grain taken out from the grain storage unit toward the outlet side, as described in claim 1, wherein the screw conveyor And a detecting means for detecting that the screw conveyor is in the folded position. When the detecting means detects the folding posture, the carrying-out driving stopping means for stopping the driving of the screw conveyor is provided, and when the engine is driven, the carrying-out driving stopping means is used when the screw conveyor is in the folding posture. If the clutch for intermittently driving the screw conveyor is in a disengaged state, the engine drive is not stopped, When the clutch is entered operated in a folded position of the screw conveyor, characterized in that is arranged to automatically stop the engine.

[Function and effect]
By adopting the above technical means and making the screw conveyor foldable, the distance to the discharge port can be reduced with a simple configuration compared to the case of adopting a structure that changes the distance to the discharge port by expansion and contraction. Can be changed.
By taking the above technical means, it is possible to detect that the screw conveyor is in the folded position by the detecting means and to stop the screw conveyor, so that the scattering of the grains from the two folding points of the screw conveyor It is easy to avoid damage and deformation of the support part of the screw conveyor.
Also, the unloading drive stop means for stopping the drive of the screw conveyor is configured so that the engine automatically stops when the screw conveyor drive is commanded in the folding position of the screw conveyor. There is no need to separately provide a dedicated clutch device or the like for cutting off the drive in the path. Therefore, the structure for driving restraint in the folding posture of the screw conveyor can be simplified.

[Solution 2]
According to a second aspect of the present invention, in the combine according to the first aspect, when the engine is stopped, the carry-out drive stop means intermittently drives the screw conveyor when the screw conveyor is in the folded position. When the clutch to be engaged is in a disengaged state, the engine is allowed to start, and when the clutch is in an engaged state when the screw conveyor is in a folded posture, the engine is not started .

[Function and effect]
In addition to the same effects as in the first aspect, the unloading drive stopping means for stopping the drive of the screw conveyor stops the start of the engine in a state in which the screw conveyor drive command is issued in the folding position of the screw conveyor. Since it is configured as described above, it is not necessary to separately provide a dedicated clutch device or the like for cutting off the drive in the grain carry-out path by the screw conveyor. Therefore, there is an advantage that the structure for driving restraint at the start in the folding posture of the screw conveyor can be simplified.

[Solution 3]
According to the invention concerning Claim 3, it is a combine equipped with the screw conveyor which conveys the grain taken out from the grain storage part toward the discharge port side, Comprising: The operation | work which carries out the grain conveyance of the said screw conveyor And a detecting means for detecting that the screw conveyor is in the folding position, and a detection means for detecting that the screw conveyor is in the folding position. When the means detects the folding posture, a carrying-out driving stopping means for stopping the driving of the screw conveyor is provided, and when the engine is stopped, the carrying-out driving stopping means is configured so that the screw conveyor stops when the screw conveyor is in the folding posture. When the clutch for intermittently driving the conveyor is disengaged, the engine is allowed to start and the screw conveyor is Wherein the clutch is in engaged condition when a folded posture Ri, characterized in that are configured not to start the engine.

[Function and effect]
By adopting the above technical means and making the screw conveyor foldable, the distance to the discharge port can be reduced with a simple configuration compared to the case of adopting a structure that changes the distance to the discharge port by expansion and contraction. Can be changed.
By taking the above technical means, it is possible to detect that the screw conveyor is in the folded position by the detecting means and to stop the screw conveyor, so that the scattering of the grains from the two folding points of the screw conveyor It is easy to avoid damage and deformation of the support part of the screw conveyor.
The unloading drive stopping means for stopping the drive of the screw conveyor is configured to stop the engine start when the screw conveyor drive command is issued in the folding position of the screw conveyor. It is not necessary to separately provide a dedicated clutch device or the like for cutting off the drive in the grain carry-out path. Therefore, it is possible to simplify the structure for driving restraint at the start in the folding posture of the screw conveyor.
[Solution 4]
According to a fourth aspect of the present invention, the screw conveyor includes a first horizontal conveyor and a second horizontal conveyor that are connected to each other before and after the grain carrying-out direction, and the first horizontal conveyor and the second horizontal conveyor are provided. , It is configured to be able to change the posture between the extended posture where the flanges provided at each connection point are joined together and the folded posture where the joined state of the flanges is released, and it is detected that the screw conveyor is in the folded posture The detection means to perform is provided in the location which remove | deviated from the said flange in the outer peripheral part of a said 1st horizontal conveyor and a 2nd horizontal conveyor.
[Solution 5]
In the invention according to claim 5, the detecting means for detecting that the screw conveyor is in the folded posture is disposed so as to be positioned between the outer peripheral portions of the first horizontal conveyor and the second horizontal conveyor in the folded posture. It is characterized by being.

[Overall structure of the combine]
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1 and FIG. 2, a pre-cutting processing unit 3 that raises cereals and cuts a stock and conveys it to a front part of a vehicle body 2 that is configured to be able to travel by a crawler traveling device 1 is provided to be movable up and down. At the same time, a boarding operation unit having a driver's seat 4 is arranged at a position parallel to the pre-cutting processing unit 3. Further, a threshing device 5 for threshing the harvested cereal meal from the pre-harvest processing unit 3 and a grain tank 6 for storing the grain from the threshing device 5 are mounted on the vehicle body 2 in a state of being parallel to the left and right. The combine is comprised including the screw conveyor A as a grain conveyance apparatus which sends out the grain stored in the grain tank 6.

[Configuration of transmission system to screw conveyor]
As shown in FIGS. 1-5, the said grain tank 6 is comprised so that the grain from the threshing apparatus 5 may be sent through the cerealing apparatus 7, and a bottom part will sag in the front-back direction view. The bottom screw 8 for feeding the grain toward the tank rear end side is provided at the bottom position, and the screw conveyor A is provided on the machine body rear end side of the bottom screw 8.

As shown in FIGS. 6, 7 </ b> A, 7 </ b> B, an input shaft 23 that transmits power via a bevel gear type transmission mechanism 22 is laterally disposed at the front end (upper conveyance side) of the screw shaft 8 </ b> S of the bottom screw 8. Arranged in posture. The input shaft 23 and the output shaft 25 of the engine 24 disposed below the driver seat 4 are provided with pulleys 26 and 27. Endless belts 28 are wound around the pulleys 26 and 27, respectively. A clutch mechanism C is configured including a tension pulley 30 supported on the swing end of the tension arm 29 so as to apply tension to the tension arm 29.
Reference numeral 50 shown in FIG. 6 is an engine stop device serving as an unloading drive stopping means for stopping the drive of the screw conveyor A and preventing the unloading of the grain, and is accompanied by a command from the control device 44 described later. The engine 24 is configured to be stopped.

FIG. 7 shows a linkage structure between the clutch mechanism C and an electrically driven clutch motor 31 for operating the clutch mechanism C that can be rotated forward and backward.
That is, the rod 32 includes an operating arm 31A of the clutch motor 31 that operates in response to an operation of the clutch switch 38 or a command of the control device 44 described later, and a tension arm 29 that holds the tension pulley 30 of the clutch mechanism C in a swingable manner. The tension arm 29 can be switched between a clutch engagement position and a clutch disengagement position by the driving force of the clutch motor 31. Further, discrimination switches 34 and 34 for discriminating that the operating arm 31A has reached the clutch engagement position and the clutch disengagement position are provided.

[Screw conveyor related]
The screw conveyor A is a vertical conveyor 9 composed of a vertical screw 9A and a vertical transfer cylinder 9B in which the kernel from the bottom screw 8 is sent, and a grain from the lower conveyance side (upper end) of the vertical conveyor 9 Is provided with a horizontal conveyor 10 composed of a horizontal screw 10A and a horizontal conveying cylinder 10B.
The horizontal conveyor 10 is composed of a combination of a first horizontal conveyor 11 on the conveyance start end side, a second horizontal conveyor 12 on the conveyance end side, and a discharge port 13 at the conveyance end position, and substantially corresponds to an intermediate position. The first horizontal conveyor 11 and the second horizontal conveyor 12 can be divided and folded so that they can be folded as shown by phantom lines in FIG. 2 to reduce the amount of protrusion outside the vehicle body. ing.
The horizontal conveyance cylinder 10B of the horizontal conveyor 10 includes a first flange 11a integrally provided on the lower conveyance side of the first horizontal conveyor 11, and a second flange 12c integrally provided on the conveyance start end side of the second horizontal conveyor 12. It has. And the sensor 37 mentioned later is mounted | worn in the side position of the 1st horizontal conveyor 11 which is a position away from the said 1st flange 11a and the 2nd flange 12c.

As shown in FIGS. 4 and 6, the vertical transfer cylinder 9B is mounted on the gear case 14 having a gear that interlocks the lower end of the screw shaft 8S of the bottom screw 8 and the screw shaft 9S of the vertical screw 9A. The vertical screw 9A is supported so as to be pivotable around the axis Y, and a wheel gear 9C is fixed to the lower end of the vertical transfer cylinder 9B, and the worm gear 15A meshing with the wheel gear 9C is driven by an electric type that rotates forward and backward. A free turning motor 15 is provided.
A gear case having gears that interlock the screw shafts 9S and 10S of the vertical screw 9A and the horizontal screw 10A is constituted by a vertical conveying cylinder 9B portion at the upper end of the vertical conveyor and a horizontal conveying cylinder 10B portion on the conveying start end side of the horizontal conveyor 10. At the same time, the vertical conveying cylinder 9B and the horizontal conveying cylinder 10B are connected to each other so as to be rotatable relative to each other around the axis X in the horizontal orientation, so that the conveyance end side of the horizontal conveyor 10 can be raised and lowered.

Between the brackets 16 and 16 fixed to the vertical transfer cylinder 9B and the horizontal transfer cylinder 10B, a screw shaft 18 that expands and contracts by the driving force of an elevating motor 17 that is electrically driven and can be rotated forward and backward, and a force in the extending direction. A gas spring 19 to be actuated is provided in parallel.
The gas spring 19 has a function of obtaining an urging force in the extending direction by applying the pressure of the gas sealed in the cylinder to the piston. The gas spring 19 assists the raising operation of the horizontal conveyor 10. It is supposed to be.
With this configuration, the entire screw conveyor A can be swung in any direction around the axis Y with the driving force of the turning motor 15, and the horizontal conveyor 10 can be pivoted with the driving force of the lifting motor 17. It is possible to freely raise and lower the height of the discharge port 13 by swinging up and down around the core X.

As shown in FIGS. 2 and 5, the foldable horizontal conveyor 10 is configured such that the first horizontal conveyor 11 on the conveyance start side and the second horizontal conveyor 12 on the conveyance end side are rotatable around the vertical axis P. It is connected and grips the grip portion of the L-shaped operation lever 12b provided on the lateral side portion of the second lateral conveyor 12 on the conveyance end side, and rotates the second lateral conveyor 12 around the vertical axis P. It is configured so that it can be operated dynamically.
Of the operation lever 12b, a portion bent in an L shape with respect to a grip portion along the longitudinal direction of the second horizontal conveyor 12 is provided so as to act as a contact piece 12a for a sensor 37 described later. That is, as shown in FIG. 5, among the foldable horizontal conveyors 10, the second horizontal conveyor 12 on the conveyance end side is in a folded posture at the position of the horizontal side portion of the first horizontal conveyor 11 on the conveyance start end side. Sometimes, a sensor 37 that contacts the contact piece 12a on the second lateral conveyor 12 side is provided. Therefore, it is configured that the contact of the sensing sensor 37 pushed by the contact piece 12a is detected in a folded state, and a detection signal is output to the control device 44.

As shown in FIGS. 1, 2, and 8, the control stick 36 that controls the posture of the screw conveyor A at the rear position of the driver seat 4 and the grain unloading operation by the screw conveyor A are turned on and off. A clutch switch 38 for turning on and off the clutch mechanism C and a pilot lamp 39 for determining the state of the clutch mechanism C are provided.
The control stick 36 is spring-biased so as to return to the neutral position, and is configured to be freely operated in the cross direction. By operating the cross in the cross direction, the screw conveyor A can be turned in either the left or right direction. The horizontal conveyor 10 can be swung up and down, and the clutch switch 38 has a structure in which the clutch switch 38 is turned on only when it is pushed.
The screw conveyor A has a retracted posture in which the horizontal conveyor 10 is received and supported by the support portion 41 at the upper end of the support column 40 standing on the vehicle body, and a retracted posture in which the support portion 41 is received and supported by the support portion 41 as shown in FIG. The storage position switch 43 is configured such that the posture can be switched to the disengaged posture, and in the retracted posture, as shown in FIG. 4, the concave portion 42A of the cam body 42 provided in the vertical conveyance cylinder 9B is turned on. It has been.

[Control devices]
The combine is provided with a control device 44 that performs turning control of the screw conveyor A, elevation control, and control of the clutch mechanism C.
The control device 44 includes a microprocessor. As shown in FIG. 8, the left switch 36L, the right switch 36R, the upper switch 36U, and the control device 44 correspond to the four operation positions of the control stick 36. A system for inputting signals from the lower switches 36D is formed, and a system for inputting signals from the detection sensor 37 for detecting folding, the clutch switch 38, and the storage position switch 43 is formed.
In addition, a system for outputting a control signal for driving the swing motor 15, the lifting motor 17, and the clutch motor 31 in the forward and reverse directions and a control signal for driving the pilot lamp 39 is formed. A system for inputting signals from the switches 34 and 34 is formed.

[Description of operation]
In the control device 44, the control operation is set as follows.
First, the main routine shown in the flowchart of FIG. 9 will be described.
[1] By operating the key switch before starting the engine, it is determined whether or not the screw conveyor A is in the folded state based on the detection signal of the sensing switch 37. If not, the engine is started and the screw conveyor A is in the folded state. If there is, the process proceeds to the next step (# 101, # 103).
[2] When it is determined that the clutch is in the folded state, it is determined based on a signal from the determination switch 34 whether the clutch mechanism C in the transmission system of the screw conveyor A is in the disconnected state. If the engine is not turned off, the clutched lamp is lit for a predetermined time and the control is terminated (# 102, # 103).
[3] When the control stick 36 is manually operated after the engine is started, stick control is performed. In this control, when the left switch 36L is turned ON, the screw conveyor A is turned left by driving the turning motor 15, and when the right switch 36R is turned ON, the screw conveyor A is turned right by driving the turning motor 15. If the upper switch 36U is turned on, the horizontal conveyor 19 is raised by driving the lifting motor 17, and if the lower switch 36D is turned on, the control stick 36 is operated to lower the horizontal conveyor 19 by driving the lifting motor 17. Control according to the direction is performed (# 104).
[4] After stick control, a clutch control routine to be described later for controlling the operation of the clutch mechanism C is executed (# 105).
[5] Next, it is determined whether the key switch is turned on or off. If it is not turned off, the stick control and the clutch control are repeated. If it is turned off, the engine 24 is stopped and the process ends (# 106, # 107).

FIG. 10 shows the clutch control routine, which is controlled as follows.
[6] First, in step 201, it is determined whether or not the storage switch 43 is in an OFF state (not stored), and if it is not OFF, it is determined whether or not the screw conveyor A is in a folded state. The process proceeds to 202, and if it is OFF, the process proceeds to step 203 for determining whether or not the manually operated clutch switch 38 is operated (# 201, # 202, # 203).
[7] In step 202 for determining the folding state of the screw conveyor A, the process proceeds to step 203 if it is detected that the screw conveyor A is not folded, and proceeds to step 209 if it is detected that it is folded (# 202, # 203). , # 209).
[8] In step 203 for determining whether or not the manually operated clutch switch 38 has been operated, if it is determined that the clutch switch 38 has not been operated, the process returns to the main routine to detect that it has been operated. Then, the process proceeds to step 204 for determining the operation state of the clutch mechanism C (# 203, # 204).
[9] In step 204 for determining the operation state of the clutch mechanism C, if it is determined that the clutch mechanism C is not engaged based on the detection state of the determination switch 34, the clutch motor 31 is operated to bring the clutch mechanism C into the engaged state. When it is determined that the pilot lamp 39 is lit and it is determined that the clutch is engaged, the clutch motor 31 is operated to switch the clutch mechanism C to the disengaged state, the pilot lamp 39 is turned off, and the process returns (# 205, # 206, # 207, # 208).
[10] In step 209 for determining whether or not the clutch mechanism C is in the disengaged state, a signal is sent to the engine stop device 50 to stop the operation of the engine 24 unless the clutch is disengaged. Then, the process returns and returns to the main routine (# 209, # 210).

[Another embodiment]
In the above-described embodiment, the engine stop device 50 is exemplified as the carry-out drive stopping unit. A separate clutch for cutting off power transmission may be provided in the drive system of the screw conveyor.

Combine side view Overall plan view of combine Side view of the connection point between the upper end of the vertical conveyor and the horizontal conveyor Transverse plan view of the lower part of the vertical conveyor Plan view of folding point of horizontal conveyor Plan view showing the outline of the arrangement of the transmission system leading to the screw conveyor Side view showing outline of clutch mechanism in cut-off state and on-state Block diagram of control system Flow chart showing main routine of control operation Flow chart showing clutch control routine

6 Grain tank 9 Vertical conveyor 10 Horizontal conveyor 31 Clutch actuator 37 Folding detection means (sensing switch)
38 Clutch switch 44 Control device 50 Unloading drive stop means (engine stop device)
A Screw conveyor C Clutch mechanism

Claims (5)

A combine equipped with a screw conveyor that conveys the grain taken out from the grain storage part toward the outlet,
The screw conveyor is configured such that the posture can be changed to an extended posture during work for carrying out the grain and a folding posture during non-work without carrying out the grain,
Provided is a detecting means for detecting that the screw conveyor is in the folded posture, and when the detecting means detects the folded posture, provided is an unloading drive stopping means for stopping the drive of the screw conveyor ,
When the engine is driven, the carry-out drive stop means does not stop driving the engine when the clutch that interrupts the drive of the screw conveyor is in a disengaged state when the screw conveyor is in the folded posture. The combine is configured to automatically stop the engine when the clutch is engaged and operated in the folded position of the screw conveyor . When the engine is stopped, the unloading drive stop means allows the engine to start when the clutch for intermittently driving the screw conveyor is in a disengaged state when the screw conveyor is in the folded position, and the screw conveyor The combine according to claim 1 , wherein the engine is not started when the clutch is in an engaged state when is in a folded position. A combine equipped with a screw conveyor that conveys the grain taken out from the grain storage part toward the outlet,
The screw conveyor is configured such that the posture can be changed to an extended posture during work for carrying out the grain and a folding posture during non-work without carrying out the grain,
Provided is a detecting means for detecting that the screw conveyor is in the folded posture, and when the detecting means detects the folded posture, provided is an unloading drive stopping means for stopping the drive of the screw conveyor,
When the engine is stopped, the unloading drive stop means allows the engine to start when the clutch for intermittently driving the screw conveyor is in a disengaged state when the screw conveyor is in the folded position, and the screw conveyor If it is the state clutch enters when it is folded posture, Combine, characterized in that are configured not to start the engine. The screw conveyor includes a first horizontal conveyor and a second horizontal conveyor that are connected to each other before and after the grain carrying-out direction, and the first horizontal conveyor and the second horizontal conveyor are provided at respective connection locations. It is configured such that the posture can be changed to an extended posture in which the flanges are joined together and a folded posture in which the joined state between the flanges is released,
The detection means which detects that the said screw conveyor is a folding attitude | position is provided in the location which remove | deviated from the said flange in the outer peripheral part of a said 1st horizontal conveyor and a 2nd horizontal conveyor. Combine as described in the section.   The detection means for detecting that the screw conveyor is in the folded posture is disposed so as to be positioned between the outer peripheral portions of the first and second horizontal conveyors in the folded posture. Combine.

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