JP4231971B2 - Grain discharger - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a grain discharging apparatus such as a combine or a grain-only transport vehicle.
[0002]
[Prior art]
As disclosed in the applicant's previous invention shown in FIG. 16 (Japanese Patent Laid-Open No. 9-54), the conventional combine grain discharging apparatus is arranged horizontally at the bottom of the Glen tank 9 for temporarily storing the grains. There is provided a bottom spiral 9a for conveying the grain, a vertical auger 11 which is connected to the bottom spiral 9a to convey the grain in the vertical direction and is rotatable about the vertical axis, and a horizontal auger 11 which is connected to the vertical auger 11 A grain auger 10 is provided which includes a horizontal auger 12 that conveys the grain in the direction, is vertically movable up and down, and is zoomable and extensible in the length direction. And in order to arrange the auger outlet 19 at the position to be threshed during the threshing operation, the vertical auger 11 is turned, the horizontal auger 12 is moved up and down, and the horizontal auger 12 is zoomed out or zoomed out. When the harvesting operation is not performed, such as during cutting, traveling on the road, or parking in the garage, the horizontal auger 12 is zoomed out and seated and stored in the auger receiver 26 on the combine 1.
[0003]
[Problems to be solved by the invention]
In the combine 1, in the case of cutting, threshing work, or running on the road other than the threshing operation, as shown by the reference line in FIG. The auger receiver 26 is seated and stored to prevent the cereal auger 10 from being swung, vibrated, dropped off or the like during the cutting operation, and the tip of the threshing auger 10 protrudes beyond the combine 1. I try to prevent dangers from happening. When the grain is stored in the grain tank 9 and cerealed, the combine 1 is moved to the vicinity of the grain transporter, and then the lateral auger 12 of the cereal auger 10 is detached from the auger receiver 26, raised, By turning or extending, the auger discharge port 19 is made to face the opening of the grain transporting vehicle, and the cerealing operation is performed.
[0004]
The horizontal auger 12 of the combine 1 shown in FIG. 16 has the upper tube 16 fitted in a narrow gap outside the middle tube 15 containing the spiral 17 that performs the grain conveying action. Is configured so as to be freely slidable in the axial direction. Hereinafter, the middle tube 15 and the upper tube 16 may be collectively referred to as a zoom tube. The horizontal auger 12 can be expanded and contracted by a zoom cylinder so as to perform a so-called zoom action.
[0005]
The traveling operation and the threshing operation of the combine 1 in which the horizontal auger 12 can be expanded and contracted by the zooming operation are significantly easier than the fixed-length horizontal auger without the zooming operation. That is, in the case of a fixed-length horizontal auger, in order to align the auger outlet 19 at the tip of the horizontal auger 12 with the opening of a grain container or the like, the stop position of the combine 1 and the turning angle adjustment of the vertical auger 11 are adjusted. And it was necessary to do it. Therefore, it is necessary to determine the stop position of the combine 1 fairly precisely, and it requires considerable skill in driving operation, and the operation time for adjustment often becomes long. However, according to the threshing auger 10 having the horizontal auger 12 having a zoom action, the length of the horizontal auger 12 is adjusted by a zoom operation, and the turning of the vertical auger 11 is adjusted, so that the auger at the tip of the horizontal auger 12 is discharged. Since the position of the exit 19 can be changed and adjusted significantly, it is not necessary to strictly determine the stop position of the combine 1, and the stop operation for positioning becomes easy.
[0006]
The combine 1 shortens the horizontal auger 12 of the threshing auger 10, turns to the upper part of the vehicle body 6, sits on the auger receiver 26, and stores it, as shown by the reference line in FIG. At the time of grain removal, the horizontal auger 12 of the grain auger 10 is detached from the auger receiver 26, lifted, turned or extended, and the auger discharge port 19 faces the opening of the grain transporter to perform the grain harvesting operation.
[0007]
The height of the vertical auger 11 of the combine 1, and hence the height of the horizontal auger 12 in the storage position, in order to reduce the size and weight of the combine 1, and not to increase the height of the eaves such as a garage for parking and storing, It is configured to be as low as possible. For this reason, the height of the horizontal auger 12 is not sufficiently high for the operator boarding the cockpit 2 as shown in FIG. There is a risk of interference. Therefore, before performing the turning operation for starting the threshing operation, the height that safely crosses the lateral auger 12 without colliding with the operator of the cockpit 2 and the Glen tank 9 (hereinafter, this height is referred to as “safety lower limit”). The height rises below the height that is mechanically possible and the upper limit limit switch is activated (hereinafter this height is called the “maximum height”). In the upper part of the tank 9, it is necessary to turn while maintaining the safety lower limit height or more.
[0008]
Therefore, the horizontal auger 12 has a height equal to or higher than the safety lower limit height in a certain turning angle range including the upper portion of the cockpit 2 from the storage position (hereinafter, this turning angle range is referred to as a “regulation region”). The horizontal auger 12 cannot be lowered below the safety lower limit height within the restricted area to avoid a collision with the operator or the Glen tank 9. Further, when the horizontal auger 12 turns to enter the restricted area from outside the restricted area, the turning is stopped when reaching the restricted area unless the height is equal to or higher than the safety lower limit height. . In this case, after the turning is stopped in the restricted area, the horizontal auger cannot be turned or lowered, and when the height of the horizontal auger 12 exceeds the safety lower limit by performing the raising operation. In this configuration, the turning operation can be performed for the first time.
[0009]
If the lateral auger 12 can move up and down and turn left and right freely outside the above-mentioned restriction region, there is no special problem when a skilled operator operates the lateral auger 12. However, when the unskilled operator operates the horizontal auger 12 or when the turning operation is automatically performed, the height of the horizontal auger 12 is set to be equal to or lower than the safety lower limit height in order to perform the turning operation outside the restricted area. In some cases, the vehicle may turn into the restricted area.
[0010]
  As described above, if the horizontal auger 12 enters the restricted area with the height of the horizontal auger 12 being below the safety lower limit and stops turning, all operations except for the lifting operation cannot be performed. Inability to operate could result in confusion. Further, even if a skilled operator accidentally reaches the regulation area and stops turning, the horizontal auger 12 is raised, and after raising to the safety lower limit height or higher, the necessary turning or lowering operation is performed. There is a problem that it is necessary to carry out the operation and complicates the operation.
  In addition, the auger position sensor that detects the turning angle of the auger may not only detect a true disconnection but also detect a disconnection due to improper mounting adjustment. The operability is reduced.
[0011]
  Therefore, the problem of the present invention is that in a threshing auger provided with a restriction area for avoiding a collision with an operator or a Glen tank during turning, threshing when reaching the restriction area while ensuring the safe operation of the restriction area. Kernel that makes auger swivel operation easy and easyDischargeIs to provide a device.Furthermore, an object of the present invention is to prevent automatic control from being stopped due to erroneous detection of disconnection of an auger position sensor that detects the turning angle of an auger, and to prevent deterioration in operability in manual control.
[0012]
[Means for Solving the Problems]
  The above-described problems of the present invention are solved by the following configuration. That is, in a grain discharging apparatus provided with an auger that can freely move up and down, a rotary potentiometer in which a coil in which an electric resistance wire is wound around an insulator and a slider that moves along with the turning of the auger are brought into sliding contact with the coil And a disconnection portion that is a non-contact portion that is provided at both ends of the coil of the rotary potentiometer and is not in sliding contact with the slider. A position sensor that outputs the minimum voltage at the rotation angle and the maximum voltage at the other maximum turning rotation angle, and the inner side of each end of the restriction area that can move up and down only within the safety lower limit height of the auger In the narrow area, the auger is operated to allow the auger to move up and down and turn in the outward direction of the restriction area, and the front area is separated from the narrow area provided in the restriction area. Narrow region provided inside the pivotable region in contact with the maximum pivoting angle of rotation of the left and right (C, D) and disconnection detection area for detecting disconnection of the position sensor,If the maximum voltage or the minimum voltage is detected when the auger is located in the disconnection detection region inside the left and right maximum rotation rotation angle without including the left and right maximum rotation rotation angles, the disconnection detection region (C, D ) And the inside of the disconnection detection region in the vicinity of the disconnection detection region for a certain period of time, the auger is swung left and right, and the maximum voltage or the minimum voltage is between the minimum voltage and the maximum voltage from the position sensor. A voltage other than voltage was detectedIn this case, the position sensor is not truly disconnected, and the position sensor is not installed at the start or end point of the coil that matches the left or right maximum turning rotation angle. Determine that the turning angle is located,Even after the auger's left / right turning operation has been continued for a certain period of time, the auger is not positioned at the left or right maximum turning rotation angle.It is a grain discharging device provided with a control device that performs processing for determining that the position sensor is truly disconnected when the maximum voltage or the minimum voltage continues.
[0013]
【The invention's effect】
  According to the present invention, in a threshing auger provided with a restriction area that cannot be swiveled below the safety lower limit height in order to avoid a collision with an operator or a Glen tank, while maintaining a safe operation in the restriction area, at both ends of the restriction area Kernels for easy and easy lifting and turning operationsDischargeAn apparatus can be provided.
  Furthermore, it is possible to distinguish between a case where the auger position sensor detects a disconnection due to improper mounting adjustment and a case where the auger position sensor is truly disconnected, preventing automatic control from being stopped due to a disconnection erroneous detection, and It is possible to obtain an excellent effect of preventing a decrease in operability in manual control.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. The same parts as those of the conventional example in the drawings are denoted by the same reference numerals.
1 is a left side view of the combine of the present invention, FIG. 2 is a partially cutaway elevation view of the front of the combine, and FIG. 3 is a partially cutaway elevation view of the rear surface of the combine. FIG. 5 is a partially cut-away right side view of the combine, FIG. 5 is a partially cut-away sectional view of the horizontal auger in a shortened zoom state, and FIG. 7 is a bird's-eye view of the operation panel around the cockpit, FIG. 8 is a block diagram of the control circuit of the threshing auger according to the embodiment of the present invention, and FIG. 9 is the evacuation of the embodiment of the present invention. 2 is a schematic plan view illustrating a turning operation of the grain auger 10.
[0015]
With reference to FIG. 1 thru | or FIG. 4, the outline of the function of the combine 1 is demonstrated.
The combine 1 is provided with a cockpit 2 on a chassis 6 having a crawler 5, and a reaper 7 that harvests cereals that are operated and operated by the operator and planted in a field in the pilot seat 2, , The threshing device 8 for threshing the grain, the grain tank 9 for housing the threshed grain, and the bottom spiral 9a (FIG. 4) provided at the bottom of the grain tank 9 are discharged backward. It is comprised from the grain reduction auger 10 (FIG. 16) etc. which convey a grain to the exterior of the combine 1. FIG. The grain auger 10 includes a vertical auger 11 connected to the rear end of the bottom spiral 9a and transported upward, and a horizontal auger 12 connected to the upper end of the vertical auger 11 and transported in the horizontal direction. .
[0016]
As shown in FIG. 4, the vertical auger 11 is capable of turning with respect to the Glen tank 9 by driving a turning gear 11 c that meshes with a turning pinion 11 b that is pivotally attached to the output shaft of the turning motor 11 a. By turning, the auger discharge port 19 at the tip of the horizontal auger 12 can be moved in the horizontal direction.
[0017]
Although not shown in detail, an auger position sensor 151 is provided so as to be driven coaxially with the output shaft of the turning motor 11a or meshed with the turning pinion 11b to detect the turning angle of the horizontal auger 12, and the horizontal auger 12 A plurality of limit switches such as a right turn limit switch 122, a left turn limit switch 123, and an overhang limit switch 124 are provided.
[0018]
As shown in FIG. 4, the horizontal auger 12 connected to the upper end of the vertical auger 11 can swing in the vertical direction around the connecting part with the vertical auger 11 as a center of rotation. 19 can be moved up and down. For this reason, one end of a telescopic linear actuator 14 incorporating a motor-driven hydraulic unit (not shown) is pivotally attached to the vertical auger 11, and the other end of the linear actuator 14 on the extending and retracting spindle side is pivotally attached to the horizontal auger 12. Then, the horizontal auger 12 is swung up and down by the expansion and contraction of the linear actuator 14 to change the angle from the horizontal position, and the auger outlet 19 is moved up and down.
[0019]
Although not shown in detail, the linear actuator 14 is provided with a length sensor to detect the raising / lowering angle of the horizontal auger 12 as the raising / lowering angle sensor 150, and the upper limit (maximum height) limit switch 120 of the horizontal auger 12 and the safety lower limit. A plurality of limit switches such as a height limit switch 128 and a lower limit lower limit switch 121 are provided.
[0020]
The vertical auger 11 and the horizontal auger 12 have a spiral which conveys the grain by a screw conveyor action together with the bottom spiral 9a shown in FIG. By operating the discharge operation lever 3, the bottom spiral 9a, the vertical aura 11e and the horizontal aura 17 are rotated simultaneously by the power from the engine (not shown), and the grains inside the glen tank 9 are discharged from the discharge port 19 at the tip of the auger. Discharge outside the combine 1.
[0021]
The horizontal auger 12 includes a middle tube 15 that is connected to the upper end portion of the vertical auger 11 (FIG. 4) and extends in the horizontal direction, and an upper tube 16 that can be fitted to the outer periphery of the distal end side to expand and contract. In the middle tube 15, a helical shaft 18 and a horizontal augerane 17 are fitted on the outer peripheral side of the helical shaft 18 (see FIG. 4), and the rotational force of the helical shaft 18 is transmitted in the upper tube 16 to the horizontal. A plurality of auger slide units 21 (FIG. 5) that rotate with the augerase 17 and expand and contract with the upper tube 16 are provided. The horizontal augerase 17 and the auger slide unit 21 are rotated to perform the grain conveying action of the horizontal auger 12 regardless of whether the upper tube 16 is zoomed or retracted. FIG. 5 shows a zoom shortened state before zooming of the upper tube 16, and FIG. 6 shows a zoom extended state after zooming of the upper tube 16 is completed.
[0022]
As shown in FIGS. 2 and 3, zoom expansion / contraction of the zoom cylinder is performed by rotating a feed screw 24 inside an auger expansion / contraction mechanism 23 provided in parallel with the horizontal auger 12 on the upper side of the horizontal auger 12 by a zoom expansion / contraction motor 22. The feed piece 25 fixed to the tube 16 and in sliding contact with the feed screw 24 is moved in the auger expansion / contraction direction. The zoom expansion / contraction motor 22 is provided with a forward / reverse rotation detection potentiometer to serve as a zoom length sensor 152 to detect the auger expansion / contraction amount from the rotation of the zoom expansion / contraction motor 22. Two limit switches, a shortened limit switch 127, are provided.
[0023]
FIG. 7 is a bird's-eye view of the operation panel 30 provided in front and side of the cockpit 2 of the combine 1. On the operation panel 30, the combine 1 is swung left and right, and the power steering lever 31 that raises and lowers the harvesting device 7, the HST lever 32 that continuously changes the traveling speed of the combine 1, and the traveling speed is stepped according to the work. Sub-shift lever 33 that shifts automatically, turning mode switching lever 34 that switches the left and right turn of the combine 1 to normal turning, slow turning, and sudden turning, cutting and threshing lever 35 that operates and stops the reaping device 7 and the threshing device 8, and engine rotation Along with a throttle lever 36 for adjusting the number, a combination meter 37 for displaying and alarming the operation status of each part of the combine 1, a sub-operation panel 30a is provided, and operation levers, switches, etc. of the grain auger 10 are arranged in a lump. Yes. That is, the sub-operation panel 30a includes a threshing clutch operating lever 3, an auger manual operating lever 4, a threshing operation switch 110, a threshing stop switch 111, an automatic extension switch 112, an automatic storage switch 113, a manual extension switch 118, and a manual operation. A shortening switch 119, an overhang setting dial 140, a zoom setting dial 141, and the like are arranged.
[0024]
When the auger manual operation lever 4 tilts the lever 4 left and right, the manual right turn switch 116 or the manual left turn switch 117 shown in FIG. 8 is turned on to turn the horizontal auger 12 left and right, and the lever 4 tilts back and forth. Then, the manual ascending switch 114 or the manual descending switch 115 is turned on to move the horizontal auger 12 up and down.
[0025]
  FIG.These show the block diagram of the circuit of the control apparatus 100 in connection with control of the grain reduction auger 10 of embodiment of this invention. The control device 100 is centered on the CPU 101, and through an input interface 102, a threshing operation switch 110, a threshing stop switch 111, an automatic overhang switch 112, an automatic storage switch 113, a manual up switch 114, a manual down switch 115, manually Right turn switch 116, manual left turn switch 117, manual extension switch 118, manual shortening switch 119, ascent upper limit switch 120, descent lower limit switch 121, right turn limit switch 122, left turn limit switch 123, overhang limit Switch 124, auger seating limit switch 125, extension limit switch 126, shortening limit switch 127, safety lower limit height limit switch 128, overhang setting dial 140, zoom setting dial 141, lift angle sensor 1 0, the auger position sensor 151, zoom length sensor 152, and inputting a HaiKoku clutch lever sensor 153.
[0026]
Further, the CPU 101 calculates the input signal calculation result via the output interface 103, and ascends solenoid 160, descend solenoid 161, right turn relay 162, left turn relay 163, zoom expansion relay 166, zoom shortening relay 167, It is the structure which operates the grain clutch relay 170 grade | etc.,.
[0027]
Next, the operation of the threshing auger 10 and the operation by the control device 100 will be described. First, manual operation performed by tilting the auger manual operation lever 4 back and forth and right and left will be described. When the auger manual operation lever 4 shown in FIGS. 7 and 8 is tilted forward and the manual lift switch 114 is turned on, the lift solenoid 160 is turned on. In operation, the lateral auger 12 is lifted by the extension of the linear actuator 14 (FIG. 4), and the lift is continued until the lift upper limit switch 120 is actuated while the manual lift switch 114 is ON. When the auger manual operation lever 4 is tilted rearward and the manual lowering switch 115 is turned on, the lowering solenoid 161 is activated, the lateral auger 12 is lowered due to the shortening of the linear actuator 14, and the lowering lower limit is maintained while the manual lowering switch 115 is ON. The lowering continues until the limit switch 121 is activated, until the safety lower limit height limit switch 128 is activated in the restricted area, or until the auger seating limit switch 125 is turned on in the auger storage position.
[0028]
Here, the restriction region is determined on the condition that the horizontal auger 12 is above the safety lower limit height so that the horizontal auger 12 does not collide with the operator of the cockpit 2 or the Glen tank 9 when the horizontal auger 12 is turned. This is a region that enables the swiveling and raising. The left and right turning described below relates to an operation when the lateral auger 12 is outside the restriction area or is within the restriction area but is above the safety lower limit height.
[0029]
When the auger manual operation lever 4 is tilted to the right and the manual right turn switch 116 is turned on, the right turn relay 162 is activated, and the vertical auger 11 is rotated right by the rotation of the vertical auger turn motor 11a (FIG. 4). Accordingly, while the manual right turn switch 116 is ON, the lateral auger 12 continues to turn right until the right turn limit switch 122 is activated. When the auger manual operation lever 4 is tilted to the left and the manual left turn switch 117 is turned on, the left turn relay 163 is actuated, and the rotation of the turn motor 11a causes the vertical auger 11 to turn left. During the ON state, the horizontal auger 12 continues to turn left until the left turn limit switch 123 is activated. The turning angle of the horizontal auger 12 is detected by the auger position sensor 151, displayed on the combination meter, and used for turning control in a regulation region and a storage position to be described in detail later.
[0030]
By operating the manual extension switch 118 and the manual shortening switch 119, the horizontal auger 12 can be zoomed in and out.
[0031]
According to the control device 100 of the present invention, the threshing auger 10 can be moved up and down and turned by automatic operation.
[0032]
As shown in FIGS. 7 and 8, first, the extension angle (turning angle) of the horizontal auger 12 is set by the extension setting dial 140, and the extension length of the horizontal auger 12 is set by the zoom setting dial 141. When the automatic overhang switch 112 is turned on after the setting is completed, the threshing auger 10 is automatically moved to the set position according to the command stored in the CPU 101 and the set values of the overhang setting dial 140 and the zoom setting dial 141.
[0033]
That is, first, the raising solenoid 160 is operated to disengage the horizontal auger 12 from the auger receiver 26, and ascend from the reference line position in FIG. 4 to the solid line position. Next, the right turning relay 162 or the left turning relay 163 is actuated to the turning angle set on the overhang setting dial 140 to drive the turning motor 11a to turn the lateral auger 12. Based on the output signal of the auger position sensor 151, it is detected that the horizontal auger 12 has reached the set turning angle, and the turning is finished. During this time, the zoom extension relay 166 is operated to drive the zoom extender motor 22 to the extension length set on the zoom setting dial 141, and the horizontal auger 12 is zoomed and extended. Based on the output signal of the zoom length sensor 152, it is detected that the horizontal auger 12 has reached the set length, and the zoom expansion ends.
[0034]
When the automatic storage switch 113 is turned on, the CPU 101 automatically moves and stores the threshing auger 10 to the storage position according to the storage position and procedure command stored in advance. That is, first, the raising solenoid 160 is operated to drive the linear actuator 14 to raise the lateral auger 12 to the safety lower limit height (solid line in FIG. 4). Next, the right turning relay 162 or the left turning relay 163 is operated up to the upper side of the auger receiver 26 to drive the turning motor 11a, and the lateral auger 12 is turned. Based on the output signal of the auger position sensor 151, it is detected that the horizontal auger 12 has reached the upper side of the auger receiver 26, and the turning is finished. During this time, the zoom shortening relay 167 is operated to drive the zoom telescopic motor 22 to shorten the lateral auger 12, and the zoom shortening of the lateral auger 12 is terminated by the output signal of the shortening limit switch 127. Finally, the lowering solenoid 161 is actuated to shorten the linear actuator 14, the lateral auger 12 is stored in the auger receiver 26 (FIGS. 2 and 3), and the automatic operation of the auger receiving seating limit switch 125 is detected. finish.
[0035]
After the setting of the position of the auger discharge port 19 of the horizontal auger 12 is completed by manual turning and extension or automatic extension, the threshing operation is performed when the threshing clutch lever 3 (see FIG. 7) is manually operated and the threshing clutch is connected. The conveyance of the grain in the Glen tank 9 is started.
[0036]
In the embodiment of the present invention, as shown in the schematic plan view for explaining the turning operation of the grain auger 10 in FIG. 9, the range of the angle θ sandwiched between the solid lines aob is set as the restriction region, and each of the both ends of the restriction region is set. A narrow area A sandwiched between the inner solid line ao and the reference line a′o and a narrow area B sandwiched between the solid line bo and the reference line b′o are provided.
[0037]
In the restricted region of the angle θ, the horizontal auger 12 can be swung if its height is equal to or higher than the safety lower limit height, and can be raised and lowered within the range of the safety lower limit height and higher and the upper limit limit switch operation. In this configuration, the safety lower limit cannot be lowered. Further, when the lateral auger 12 is swung from outside the restriction region while being kept below the safety lower limit height, it is configured to operate so as to stop turning when the restriction region is reached.
[0038]
Explaining this in detail, if the horizontal auger 12 that was in the vicinity of (a) outside the restriction area is turned to the right, the height of the horizontal auger 12 on the solid line ao reaching the restriction area should be equal to or higher than the safety lower limit height. If it is below the safety lower limit height, the switch of the turning motor 11a is turned off, and the turning of the horizontal auger 12 stops. Actually, the stop position stops in a narrow region within the restriction region indicated by the oblique lines due to the inertia of the lateral auger 12.
[0039]
In the conventional example, if the stop position of the horizontal auger 12 is within the restriction region, not only the horizontal auger 12 can be lowered and turned right but also turned leftward until the horizontal auger 12 is raised above the safety lower limit height. Can not. Similarly, when the horizontal auger 12 that was in the vicinity of (A) outside the restriction area is turned leftward, the horizontal auger 12 can turn freely if the height of the horizontal auger 12 is equal to or greater than the safety lower limit height. However, if it is below the safety lower limit height, the switch of the turning motor 11a is turned off, and the turning of the horizontal auger 12 is stopped. Actually, the stop position stops in a narrow region within the restriction region indicated by the oblique lines due to the inertia of the lateral auger 12. In the conventional example, if the stop position of the horizontal auger 12 is within the regulation region, the horizontal auger 12 cannot be swung down or turned to the right, of course, until it is raised above the safety lower limit height. It was.
[0040]
In the embodiment of the present invention, the narrow areas A and B are provided inside the both ends of the restriction area, and the horizontal auger 12 is moved up and down and escaped from the restriction area only in the narrow areas A and B. It features a configuration that can freely turn in the direction. In other words, within the restricted region of the angle θ, except for the narrow regions A and B inside the respective ends, the lateral auger 12 can be swung as long as its height is equal to or higher than the safety lower limit height. It can be raised and lowered within the range above the height and up to the upper limit limit switch operation, but it cannot be lowered below the safety lower limit height, and the lateral auger 12 is kept below the safety lower limit height. When turning from outside the restriction area, the turning operation is stopped when the restriction area is reached.
[0041]
Therefore, in the embodiment of the present invention, when the horizontal auger 12 that was in the vicinity of (a) outside the restriction area is turned to the right, if the height of the horizontal auger 12 is equal to or less than the safety lower limit height, the restriction area. At the solid line ao, the switch of the turning motor 11a is turned off, and it stops in the narrow area A indicated by the oblique line in the restriction area due to the inertia of the lateral auger 12. In the narrow area A, the lateral auger 12 acts so as to be able to freely move down and turn left as well as rise, except for turning right. In addition, when the horizontal auger 12 that was in the vicinity of (a) outside the restriction area is turned leftward, if the height of the horizontal auger 12 is equal to or less than the safety lower limit height, the turning motor 11a of the turning motor 11a reaches the restriction area. The switch is turned OFF and stops in the narrow area B indicated by the oblique lines in the restricted area due to the inertia of the lateral auger 12. Within the narrow area B, the horizontal auger 12 acts to be able to freely move down and turn right as well as up, except for turning left.
[0042]
  According to the embodiment of the present invention, the narrow regions A and B are provided on the inner sides of the both ends of the restriction region where the lateral auger 12 can be freely swung only within the safety lower limit height or more. Is configured to be able to move up and down and turn outward in the restricted area, so that turning operations outside the restricted area, such as when the unskilled operator operates the horizontal auger 12, or when turning operation is performed automatically, etc. Even if the vehicle is turned to the restricted area with the intention of performing the operation, an unexpected inoperability that prevents all operations except the ascending operation from being performed as in the conventional example is brought about, and the work is not confused. It also reaches the regulatory domainTabaIn this case, since the horizontal auger 12 is in the narrow areas A and B, a complicated operation such as turning or lowering the horizontal auger 12 after raising the horizontal auger 12 to the safety lower limit height is not required. In addition, within the restricted area as in the past, the lateral auger can turn only within the safety lower limit height, and can exhibit an excellent effect of ensuring safety.
[0043]
  Next, modifications of the embodiment of the present invention shown in FIGS. 1 to 9 are shown in FIGS.FIG.Is a schematic plan view of the combine showing the turning range of the horizontal auger, and FIG. 11 is a diagram showing the relationship between the turning angle of the auger position sensor 151 and the output voltage,FIG.FIG. 6 is an electric circuit diagram of an auger position sensor 151. According to this example, it is possible to easily find out an attachment adjustment failure or disconnection failure of the auger position sensor 151 that detects the turning angle of the lateral auger 12.
[0044]
  FIG.As shown in FIG. 11, the horizontal auger 12 can turn between the angle φ formed by the solid line co and the solid line do. As shown in FIG. 11, the auger position sensor 151 has a minimum rotation angle 0 (solid line co). The minimum voltage (for example, 0V) is output, and the maximum voltage (for example, 5V) is output at the maximum rotation angle φ (solid line do). The auger position sensor 151 is a rotary potentiometer and is a developed electric circuit diagram.FIG.The voltage (for example, 5V) is applied to both ends (c) and (d) of the winding type electric resistance as shown in Fig. 5 and the voltage proportional to the turning angle is taken out by the slider (e) that moves with the turning of the horizontal auger 12. The sensor detection value is used.
[0045]
The auger position sensor 151 uses a coil in which an electric resistance wire is wound around an insulator and a potentiometer in which a slider is brought into sliding contact with the coil. In order to increase the resolution of the potentiometer detection value, the coil has a small diameter. Electrical resistance wires are wound at a high density at an equal pitch, and lead wires are attached to both ends of the coil, and the lead wire portions are non-contact portions where the slider does not slide (hereinafter referred to as “disconnection portions”). Call it.)
[0046]
As the auger position sensor 151, a potentiometer having as high a resolution as possible is used, and the entire range from the start point to the end point of the potentiometer coil is used in order to prevent the resolution from being lowered even when the auger position sensor 151 is attached to the grain auger 10. It is desirable to make it.
[0047]
  That is, when mounting the auger position sensor 151FIG.The start point (c) of the potentiometer coil is adjusted to coincide with the point c of the maximum left turning angle of the horizontal auger 12, and the end point (d) of the coil is adjusted to match the point d of the maximum right turning angle. If the adjustment is made in this way, the relationship between the rotation angle of the auger position sensor 151 and the detected output voltage is as shown in FIG. 11, the minimum voltage (for example, 0V) at the point c of the maximum left turn angle, and the maximum right turn angle. The maximum voltage (for example, 5V) is obtained at point d.
[0048]
However, it is attached and adjusted so that the starting point (c) of the coil of the potentiometer matches the point c of the left maximum turning angle of the horizontal auger 12 and the end point (d) of the coil matches the point d of the maximum turning right angle. Is not always easy, and may be attached to the broken portion of the coil as if it were attached to the start point or end point of the coil. In addition, even if it is correctly mounted in the initial mounting state, the mounting adjustment may change due to vibration during use or the like, and the maximum turning angle may be located at the broken portion of the coil.
[0049]
In this example, in the auger turning control of the control device 100, a narrow range C (a hatched portion between the solid line co and the reference line c′o) is defined in contact with the maximum left turning angle (solid line co), and A narrow range D (a hatched portion between the solid line do and the reference line do ') is defined in contact with the maximum right turning angle (solid line do), and each is defined as a disconnection detection area. If the detection signal indicating that the horizontal auger 12 has escaped the disconnection detection area is not obtained even if the turning operation of the horizontal auger 12 is continued for a certain time, the disconnection of the auger position sensor 151 is detected. And
[0050]
According to this example, the disconnection detection areas C and D are defined in the vicinity of the left and right maximum turning angles of the horizontal auger 12, so that the mounting adjustment of the auger position sensor 151 for detecting the turning angle of the horizontal auger 12 is incomplete. Alternatively, it is possible to determine which is the cause when the breakage of the auger position sensor 151 enters due to a change in adjustment after the attachment or when the auger position sensor 151 is truly broken.
[0051]
  That is, when the horizontal auger 12 is turned around the maximum turning angle, the normal output voltage is detected by exiting from the disconnection detection area C or D by turning at a small angle for a fixed time to escape from the disconnection detection area. If it is done, it is a break-in part rush due to poor adjustment of the auger position sensor 151, and it can be determined that the auger position sensor 151 is broken if the maximum voltage (for example, 5V) or the minimum voltage (for example, 0V) continues even after a lapse of a certain time. In this case, if the disconnection point of the auger position sensor 151 is the maximum voltage continuation,FIG.If the minimum voltage continuation is near the point (c) below the point (e)FIG.It is near the point (d) that is greater than or equal to the point (e).
[0052]
Since this example works as described above, it is possible to detect the case where the auger position sensor detects a disconnection by entering the disconnection area due to improper installation adjustment, etc. It is possible to obtain an excellent effect of preventing the automatic control from being stopped due to the above and preventing the operability from being lowered in the manual control. Note that the configuration of control for preventing erroneous detection of disconnection can be applied not only to turning control of the horizontal auger but also to an adjustment chain position sensor.
[0053]
  Next, another modification of the embodiment of the present invention shown in FIGS. 1 to 9 is shown in FIGS.FIG.Is a schematic plan view of the combine showing the turning of the horizontal auger 12 of this example,FIG.These are the diagrams which show the relationship between the turning angle of the auger position sensor 151 of this example, and an output voltage. According to this example, it is possible to easily adjust the device in the control for turning the horizontal auger 12 from the overhanging position to the storage position.
[0054]
When a high-resolution rotary potentiometer is used as the auger position sensor 151 for detecting the turning angle of the horizontal auger 12, all the turning control of the horizontal auger 12 is adjusted by the detection value of the auger position sensor 151. Reliability can be improved and the control method can be simplified. However, regardless of whether the auger position sensor 151 is directly connected to the turning motor 11a or the turning gear 11c, gear backlash, backlash, etc. exist, and the vertical auger 11 and thus the horizontal auger 12 It is inevitable that the turning angle and the detected value of the auger position sensor 151 slightly differ depending on the left and right of the turning direction. This difference is small and does not cause a problem in normal turning control. However, when turning the horizontal auger 12 to the storage position, it is necessary to turn the horizontal auger 12 to the position just above the auger receiver 26. It was dealt with like.
[0055]
  Ie actuallyFIG.The horizontal auger 12 is turned to the right in the direction of the arrow G shown in FIG. 6 and manually adjusted so that the horizontal auger 12 is directly above the storage position (center line Fo), and the output voltage value g ′ (the auger position sensor 151).FIG.). AlsoFIG.The horizontal auger 12 is turned counterclockwise in the direction of the arrow H shown in FIG. 5 and is manually adjusted so that the horizontal auger 12 is directly above the storage position (center line Fo), and the output voltage value h ′ of the auger position sensor 151 is read. . The values of g ′ and h ′ obtained by manual adjustment in this way are stored in advance in the nonvolatile memory 104 (FIG. 8) of the control device. In the storage control by the automatic control of the horizontal auger 12, the auger position sensor 151 is turned until the detected value of the auger position sensor 151 becomes g ′ or h ′ in response to the right turn or the left turn. The swivel angle indicates g or h.FIG.Is reached immediately above the storage position indicated by reference line Fo.
[0056]
As described above, the values of g ′ and h ′ of the auger position sensor 151 necessary for controlling the horizontal auger 12 to reach the storage position are manually adjusted to actually turn the horizontal auger 12 right and left, respectively. The troublesome operation of reading the detected value of the auger position sensor 151 when the horizontal auger 12 comes directly above the storage position and storing the obtained value in the nonvolatile memory 104 (FIG. 8) has been performed. As a result, even if the adjustment to the right turn is good, the adjustment to the left turn is poor, or the adjustment to the left turn is forgotten or neglected. There was a problem that results could not be obtained.
[0057]
  In this example, the control device 100 determines the deviation of the output voltage of the auger position sensor 151 of the right turn and the left turn at the storage position of the horizontal auger 12, that is,FIG.(G′−h ′) is stored in advance in the non-volatile memory 104 (FIG. 8), and the horizontal auger 12 is swung only to the right or left to manually adjust the horizontal auger 12 to the storage position. The detected value g ′ or h ′ of the auger position sensor 151 when it comes directly above is read, and the obtained value of g ′ or h ′ is stored in the non-volatile memory, and at the CPU 101 (g′−h ′) The value of g ′ to h ′ or the value of h ′ to g ′ is calculated and stored in the nonvolatile memory 104. Here, the value of the deviation (g'-h ') is twice the value of backlash, backlash, etc., and is a value that can be used repeatedly if it is obtained by performing manual adjustment only once.
[0058]
According to this example, if the adjustment for positioning the horizontal auger 12 to the storage position is performed only for one of the right turn and the left turn, the other is adjusted by calculation with a deviation stored in advance. Therefore, it is possible to prevent the other adjustment from being forgotten or poorly adjusted, to reduce adjustment errors, and to shorten the time required for adjustment.
[0059]
Next, still another modification of the embodiment of the present invention shown in FIGS. 1 to 9 is shown in FIG. FIG. 15 is a block diagram showing a part of the control circuit of this example.
[0060]
In the adjustment of positioning the horizontal auger 12 in the above-described another modified example in order to obtain the adjustment value stored in the nonvolatile memory 104, it is necessary to manually rotate the horizontal auger 12 to be positioned at a predetermined position. Further, after performing the adjustment for positioning the lateral auger 12, it may be necessary to make troublesome adjustments such as fine adjustment of the mounting of the auger position sensor 151. This is indicated by the checker 106 shown in FIG. Can be used to solve this problem.
[0061]
  That is, the checker 106 shown in FIG. 15 includes an input key 106a, a liquid crystal display panel 106b, a connection cable 106c, and the like, and can be connected to the microcomputer 101 via the communication interface 105.FIG.), By inputting + Δg ′ from the input key 106a and changing it to (g ′ + Δg ′), it is possible to perform an operation for finely adjusting the rotation angle of the auger position sensor from g to (g + Δg). As a result, the stored value obtained by actually turning and finely adjusting the horizontal auger 12 in the past manually is input from the checker 106 to the stored value obtained by manually turning the horizontal auger 12 roughly. Therefore, it is possible to replace the fine adjustment with the adjustment of the position of the auger position sensor 151.
[Brief description of the drawings]
FIG. 1 is a left side view of a combine according to an embodiment of the present invention.
FIG. 2 is a partially cutaway elevation view of the front of the combine of FIG.
FIG. 3 is a partially cutaway elevation view of the back side of the combine of FIG. 1;
FIG. 4 is a right side view of the combine of FIG.
5 is a partially cutaway cross-sectional view of the combine horizontal auger in FIG. 1 in a zoom shortened state. FIG.
6 is a partially cutaway sectional view of the horizontal auger of the combine of FIG. 1 in a zoom extended state.
7 is a bird's-eye view of an operation panel around the cockpit of the combine in FIG.
FIG. 8 is a block diagram of a control circuit of the threshing auger according to the embodiment of the present invention.
FIG. 9 is a schematic plan view for explaining the turning operation of the grain auger according to the embodiment of the present invention.
FIG. 10It is an electric circuit diagram of the auger position sensor of the grain auger of the modification of embodiment of this invention.
FIG. 11 is a diagram showing a relationship between a turning angle of an auger position sensor of a grain auger and an output voltage according to a modification of the embodiment of the present invention.
FIG.It is a plane schematic diagram explaining the turning range of the grain reduction auger of the modification of embodiment of this invention.
FIG. 13It is a diagram which shows the relationship between the turning angle and output voltage of the auger position sensor of the grain auger of another modification of embodiment of this invention.
FIG. 14It is a plane schematic diagram explaining the storing position and turning direction of the grain auger of another modification of the embodiment of the present invention.
FIG. 15 is a block diagram showing a part of a control circuit for a threshing auger according to still another modification of the embodiment of the present invention.
FIG. 16 is a side view of a conventional combine.
[Explanation of symbols]
        1 Combine 2 Cockpit
        3 Discharge operation lever 4 Auger operation lever
        5 Crawlers 6 Chassis (body)
        7 Mowing device 8 Threshing device
        9 Glen tank 9a Bottom spiral
        10 Threshing auger 11 Vertical auger
        11a slewing motor 11b slewing pinion
        11c Swivel gear 11e Vertical auracene
        12 Horizontal auger 14 Linear actuator
        15 Middle tube 16 Upper tube
        17 helix 18 helix axis
        19 auger outlet 21 auger slide unit
        22 Zoom telescopic motor 23 Auger telescopic mechanism
        24 Feed screw 25 Feed piece
        26 Ogre receiver 30 Operation panel
        30a Sub-operation panel 31 Power steering lever
        32 HST lever 33 Sub-shift lever
        34 Swivel mode switching lever 35 Cutting threshing lever
        36 Throttle lever 37 Combination meter
        100 control device 101 CPU
        103 Output interface 104 Non-volatile memory
        105 Communication interface 106 Checker
        106a Input key 106b LCD panel
        106c connection cable 110 threshing operation switch
        111 Threshing stop switch 112 Automatic overhang switch
        113 Automatic storage switch 114 Manual lift switch
        115 Manual lowering switch 116 Manual right turn switch
        117 Manual left turn switch 118 Manual extension switch
        119 Manual shortening switch 120 Rise upper limit switch
        121 Lower limit lower limit switch
        122 Right turn limit switch
        123 Left turn limit switch
        124 Overhang limit switch
        125 auger seating limit switch
        126 Extension limit switch 127 Shortening limit switch
        128 Safety lower limit height limit switch
        140 Overhang setting dial 141 Zoom setting dial
        150 Lifting angle sensor 151 Auger position sensor
        152 Zoom length sensor 153 Threshing clutch lever sensor
        160 Lifting solenoid 161 Lowering solenoid
        162 Right turn relay 163 Left turn relay
        166 Zoom expansion relay 167 Zoom shortening relay
        170 Threshing clutch relay

Claims (1)

In a grain discharging device equipped with an auger that can freely move up and down,
A coil in which an electric resistance wire is wound around an insulator, a rotary potentiometer in which a slider that moves as the auger turns is slidably contacted with the coil, and a slider provided at both ends of the coil of the rotary potentiometer. It consists of a disconnected part that is not in sliding contact, detects the turning angle of the auger, and outputs the minimum voltage at the left and right maximum turning rotation angle where the auger can turn and the maximum voltage at the other left and right maximum turning rotation angle A position sensor to
Operation of the auger that allows the auger to move up and down and swivel out of the restricted area in a narrow area provided inside each end of the restricted area that can be raised and lowered only above the safety lower limit height of the auger In addition to the narrow area provided in the restriction area, the narrow area (C, D) provided inside the area capable of turning in contact with the left and right maximum turning rotation angles is disconnected from the position sensor. The maximum voltage or the minimum voltage is detected when the auger is positioned in the disconnection detection area inside the left and right maximum turning rotation angles without including the left and right maximum turning rotation angles. And by turning the auger left and right continuously for a certain period of time in the vicinity of the disconnection detection area (C, D) and the disconnection detection area inside the disconnection detection area. Maximum start point or end point of the coil is left or right in a case where a voltage other than said maximum voltage or minimum voltage be between large voltage is detected attachment of the position sensor instead of the position sensor is disconnected true It is determined that the maximum turning rotation angle is located at the disconnection portion of the coil of the position sensor that does not coincide with the turning rotation angle, and the left and right maximum turning rotation is continued even after the auger left / right turning operation is continued for a certain period of time. A grain discharging apparatus comprising: a control device that performs a process of determining that the position sensor is truly disconnected when the maximum voltage or the minimum voltage continues despite the absence of an auger at a corner .

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