JP2007037507A - Unloading auger in combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the following problems that when heavies such as header or the like are hung to be mounted or dismounted for maintenance in low ceiling areas such as a shed or a storage, its restriction control is invalidated to permit an unloading auger to advance into a restricted area, however, a conventional machine informs the invalid restriction control only by a small lamp such as an automatic switch and the operator manually operating the auger forgets the restriction control is in the invalid mode. <P>SOLUTION: A restriction-releasing means for invalidating the restriction control is provided, and when the control unit judges that the unloading auger is positioned in the restriction area, while the restriction control is invalidated, the control unit outputs the signal to an alarm. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a discharge auger that is capable of swiveling and raising / lowering freely with respect to the airframe, an auger operation tool that swivels and lifts the discharge auger, and a control unit that turns and lifts the discharge auger according to the operation of the auger operation tool, It is related with the combine provided with.

2. Description of the Related Art Conventionally, there has been known one provided with a regulation control means in which a regulation area for prohibiting the discharge auger from entering is within a predetermined turning range of the discharge auger and within a set height or less. (For example, refer to Patent Document 1.)
In addition, when a potentiometer that detects the turning position of the discharge auger breaks down, there is known one that disables the restriction control and allows the discharge auger to enter the restricted area. (For example, see Patent Document 2.)
Japanese Patent No. 2669966 JP 2003-333919 A

However, when a heavy object such as pretreatment is hung and removed by a crane for maintenance in a position where the ceiling is low such as in a barn or warehouse, when the discharge auger is entered into the restricted area with the restriction control disabled, Since the conventional system notifies that the regulation control is invalid by only blinking a small lamp such as an automatic switch, there is a problem that a manually operated operator forgets that the regulation control is invalid.
Further, there is a problem that surrounding workers cannot easily determine that the regulation control is invalid.
An object of the present invention is to improve the above conventional problems.

A discharge auger capable of swiveling and raising / lowering with respect to the airframe, an auger operating tool for turning and raising / lowering the discharge auger, and a control unit for turning and raising / lowering the discharge auger according to the operation of the auger operating tool. An auger regulation control in a combined discharge auger having an auger regulation control means for setting a regulation area within a predetermined turning range of the auger and within a set height and prohibiting the discharge auger from entering the regulation area. A control canceling means for disabling the means, and when the control section determines that the discharge auger is located in the control area when the auger control control means is disabled, the control section outputs to the alarm device And
Further, the control unit includes a regulation releasing unit that invalidates the auger regulation control unit, and when the control unit determines that the discharge auger attempts to enter the regulation region from outside the regulation region when the auger regulation control unit is invalid, Is characterized by stopping the discharge auger.
In addition, it comprises a regulation releasing means for invalidating the auger regulation control means, and when the control section determines that the discharge auger is located in the regulation area when the auger regulation control means is invalid, the control section The operation speed is set to be lower than that outside the restricted area.

With the above-described configuration, when the control unit determines that the discharge auger is located in the restriction region when the restriction control is invalid, the control unit outputs the alarm to the alarm so that the discharge auger is manually placed in the restriction region. Not only the operating operator but also the surrounding workers can be notified that the regulation control is invalid, and the maintenance work can be performed safely.
In addition, when the control unit determines that the discharge auger tries to enter the restriction region from outside the restriction region when the restriction control is invalid, the control unit stops the discharge auger so that the restriction control is invalid. Even if the operator who manually operates is forgotten, the discharge auger always stops at the boundary position of the restriction area even if it continues to operate in the direction of the restriction area from outside the restriction area where the alarm is not issued, so that the operation can be performed with peace of mind. Then, once the auger operating tool is brought into a non-operating state and then operated again, the discharge auger can enter the restricted area, so that maintenance work can be performed safely.
In addition, when the control unit determines that the discharge auger is located in the restriction region when the restriction control is invalid, the control unit lowers the turning and lifting operation speed of the discharge auger from outside the restriction region, Even if you feel the danger of coming into contact with people or objects, it is easy to avoid it, and even if it comes in contact, the impact is small, so you can perform maintenance work with peace of mind.

Next, one embodiment of the present invention will be described with reference to the drawings.
1 is a right side view of the combine, FIG. 2 is a plan view of the combine, FIG. 3 is a plan view of the control unit, FIG. 4 is a step perspective view of the control unit, FIG. 5 is a step right side view of the control unit, and FIG. FIG. 7 is a partial cross-sectional view of the control unit perspective view, FIG. 8 is a partial cross-sectional view of the rear side of the lower part of the grain tank, and FIG. 9 is a second embodiment of the vertical spiral of FIG. 10 is a third embodiment of the vertical spiral of FIG. 8, FIG. 11 is a control block diagram of the present invention, FIG. 12 is a plan view showing a turning range of the discharge auger of the present invention, and FIG. 13 is a discharge auger control flowchart of the present invention. FIG. 14 is a first embodiment of an auger restriction release control flowchart of the present invention, FIG. 15 is a second embodiment of an auger restriction release control flowchart of the present invention, and FIG. 16 is an auger restriction release control flowchart of the present invention. This is a third embodiment.

  1 is a combine, and the combine 1 includes a pre-processing unit 2 that cuts the stems in front of the machine body, and threshs the grains from the cut stems and cuts the grains at the upper part of the machine frame 3. A threshing unit 5, a grain tank 6 for storing the selected grain, a discharge auger 8 for freely turning and moving up and down with respect to the machine body and discharging the grain stored in the grain tank 6 to the outside of the machine A post-processing unit 9 that discharges threshed waste and a cabin 11 that covers a control unit 10 on which an operator rides are provided, and left and right crawler traveling units 12 are provided at the lower part of the body frame 3.

  The crawler traveling unit 12 rolls the drive sprocket 15 that drives the crawler 13 in the forward / backward direction, the wheel 16 that rolls on the lower inner periphery of the crawler 13 to support the airframe, and the upper inner periphery of the crawler 13. And an idler 19 that slides in the front-rear direction and stretches the crawler 13. Of the rollers 16, the rollers 16 positioned at the front and rear ends are provided such that the lower ends are positioned above the other rollers 16. Conventionally, the rollers 16 having the same diameter are changed in height. Since it was mounted, the front and rear end rolling wheels 16 having a small load were matched with other rolling wheels 16 having a large load, and both the rolling wheels 16 and the bearings were excessive in quality, heavy, and expensive. Therefore, in this embodiment, both the front and rear wheel 16 and the bearing have a small diameter, thereby reducing the weight and reducing the cost.

The grain tank 6 supports the vertical spiral cylinder 20 of the discharge auger 8 so as to be pivotable outward (two-dot chain line) around the machine body, and maintains a space between the threshing portion 5 and the grain tank 6. At this time, the grain tank 6 is configured to be able to enter the retreated space. An engine cover 22 for storing the engine 21 (see FIG. 6) is provided at the lower rear portion of the cabin 11, and an air cleaner cover 23 for storing an air cleaner is provided above the engine cover 22 (see FIGS. 1 and 3). An air inlet 25 that guides air to the air cleaner is provided on the back side of the air cleaner cover 23. However, dust may block the air inlet 25 due to a long harvesting operation.
Therefore, in this embodiment, the brush 26 is provided on the front surface of the grain tank 6 and the grain tank 6 is rotated outwardly for maintenance to automatically remove dust from the air intake 25. (See FIG. 2).
In another embodiment, the cabin boarding opening 28 is configured to be switched between a fully closed state and a fully open state (two-dot chain line) by a slide door 29 that slides in the front-rear direction. In conjunction with this, the brush 26 provided behind the air cleaner cover 23 is slid through the slide rail 31 so that the operator automatically opens and closes the intake port 25 by opening and closing the slide door 29 when getting on and off the combine 1. Can be removed (see FIG. 3).

  As shown in FIG. 3, the operation unit 10 includes an operation seat 32 in which an operator sits at the center, and an operation step 33 at a lower front portion of the operation seat 32. The left side of the driving seat 32 has a main transmission lever 35 for shifting the traveling speed steplessly forward and backward, and the left side of the main transmission lever 35 has a stepped transmission speed in three steps depending on the work purpose and cutting conditions. The auxiliary transmission lever 36 to be operated, the engine control lever 38 for adjusting the rotational speed of the engine 21 behind the auxiliary transmission lever 36, and the power of the threshing unit 5 and the preprocessing unit 2 are turned on and off behind the engine control lever 38 A working machine / reaching clutch lever 39 is provided. Further, an auger manual lever (auger operating tool) 41 for turning and raising / lowering the discharge auger 8 is provided behind the operation seat 32, and the discharge auger 8 is automatically moved to the storage position or the discharge position beside the auger manual lever 41. An auger automatic switch 42 for instructing to do so is provided.

  As shown in FIGS. 4 and 5, a footrest 43 for placing a foot is provided in front of the maneuvering step 33, and the footrest 43 can be switched between a use state and a non-use state (two-dot chain line) using a pin 45 as a rotation fulcrum. Each state is maintained when the footrest 43 hits the stopper pin 46. Conventionally, since the footrest 43 has not been provided with an anti-vibration structure, the vibration when the foot is placed is uncomfortable or the sound is annoying when the foot is not placed. By adopting an anti-vibration structure through an elastic body in the support part, rubber 48 is fitted into the stopper pin 46, and rubber 49 is attached to the upper surface of the footrest 43, thereby suppressing unpleasant vibrations and harsh sounds. Yes.

  As shown in FIGS. 6 and 7, the engine 21 covered with the engine cover 22 is mounted below the operation seat 32 of the control unit 10, and the cooling air sucked by the cooling fan 51 is applied to the radiator to cool the engine 21. However, since the driving seat 32 is conventionally installed on the engine cover 22, even if a heat shield is used, the temperature around the driving seat 32 becomes high, and the lever 52 on the left side of the driving seat 32 Hot air was blown from the hole 55 of the penetrating lever panel 53, but in this embodiment, the engine cover 22 on which the operation seat 32 is installed has a double structure, so that the suction force of the cooling fan 51 causes the hole of the lever panel 53. The cooling air is sucked from 55 and passes through the engine cover 22 having a double structure, so that the engine cover 22 is prevented from becoming high temperature. Both are prevented from blowing up the hot air from the hole 55 of the lever panel 53.

As shown in FIG. 8, a vertical spiral 59 for transporting the grain in the grain tank 6 to the discharge auger 8 is connected to the lower rear part of the grain tank 6, and the grain in the grain tank 6 is transported to the spiral 61. Therefore, the grain is relayed to the vertical spiral 59 in the vertical spiral cylinder 20 by the jump plate 62 at the end of the transport spiral 61. Conventionally, when the discharge clutch is disconnected while the grain is being discharged, the vertical spiral cylinder 20 is filled with the grain. When the discharge auger 8 is driven to turn and move up and down in this state, the vertical spiral 59 is reversed. Therefore, the starting end of the vertical spiral 59 is overfilled, and the starting torque when the discharge clutch is connected again increases, resulting in a problem that the grains are clogged. Therefore, in this embodiment, the space behind the vertical spiral 59 starting end portion is closed by the shielding plate 63, and the helical lower space that does not act at the time of grain conveyance is also closed by the shielding plate 64, thereby preventing overfilling and increasing the starting torque. It was possible to prevent the problem of clogging the grain.
Further, even if the shielding plate 63 of the vertical spiral 59 is the same as that of FIG. 9, the same effect as that of FIG. 8 can be obtained.
Further, since the center portion of the vertical spiral 59 has a low filling rate at the time of conveyance (almost no action), even if the vertical spiral shaft 65 has a large diameter as shown in FIG. 10, the same effect as that of FIG. Is obtained.

  As shown in FIG. 11, the combiner according to the present invention is equipped with a microcomputer 66 as a control unit, and on the input unit side, an ascending switch 68, a descending switch 69, and a left-turning switch 71 of an auger manual lever 41 as an auger operating tool. A right turning switch 72, an auger automatic switch 42 for instructing to automatically turn the discharge auger 8 to a discharge position or a storage position, and an auger for detecting that the discharge auger 8 has been raised to the highest control position. Input is made from an upper limit switch 73 and an auger potentiometer 75 that detects a turning position of the discharge auger 8 with respect to the machine body. Further, on the output side, an auger raising / lowering valve 77 for driving the raising / lowering cylinder 76 of the discharge auger 8 and a lowering solenoid 78, a left turning output 79 of an auger turning motor for turning the discharge auger 8 to the left with respect to the airframe, right A right turn output 81 of the auger turning motor to be turned and an electronic buzzer (alarm) 82 are output.

As shown in FIG. 12, the discharge auger of the present invention is configured such that the movable area M of the discharge auger 8 is set by the restriction area R and the discharge area D, and the left turn limit position of the movable range M is set as the storage position S. Yes.
When the auger upper limit switch 73 is OFF in the range of the restriction region R, the microcomputer 66 determines that the current position of the discharge auger 8 is within the restriction region R.

As shown in FIG. 13, in the discharge auger control of the present invention, the state of a restriction release flag, which will be described later, is determined in S1, and if ON, the process proceeds to S2, and if OFF, the process proceeds to S3.
In S2, it is determined whether or not the auger manual lever 41 is operated. If it is not operated (no), the output set is cleared in S5 and the next step is performed. If operated, the auger in S6 is selected. After manual control, the process proceeds to S8.
If the auger automatic switch 42 is OFF in S3, the process proceeds to S2, and if it is ON, the process proceeds to S8 via the auger automatic control in S9.
The state of the restriction release flag is determined in S8. If it is OFF, the process proceeds through the auger restriction control (auger restriction control means) in S11, and if it is ON, the process proceeds through the auger restriction release control in S12.

  That is, a preset operation before entering the discharge auger control routine, for example, a preset operation such as turning on the ignition switch while turning on the auger automatic switch 42, or pressing the emergency stop switch during normal control. By operating the auger manual lever 41 with the restriction release flag turned on, maintenance work can be performed safely by executing the auger restriction release control described later.

In the first embodiment of the auger restriction release control according to the present invention, as shown in FIG. 14, it is determined in S15 whether or not the current position of the discharge auger 8 is in the auger restriction area R. If the temporary stop flag is OFF, the process proceeds to the next step.
In S18, the state of the pause flag is determined. If OK, the process proceeds to the next. If it is STOP, the process proceeds to S19. If OFF, the pause flag is stopped in S21 and the electronic buzzer 82 is set to sound a single tone. In step S22, the turning and lifting output set of the discharge auger 8 is cleared and the process proceeds to the next.
In S19, it is determined whether or not the auger manual lever 41 has been operated from the non-operating state. If YES, the temporary stop flag is set OK in S23 and the electronic buzzer 82 is set to emit an intermittent sound. If so, the process proceeds to S22.

That is, when the discharge auger 8 enters the restriction region R from outside the restriction region R (S15 → YES), the movement of the discharge auger 8 is temporarily stopped (S22) and the electronic buzzer 82 is sounded with a single sound (S21). Thus, the operator understands that the discharge auger 8 is about to enter the regulation region R, and the regulation that does not sound an alarm when the operator who manually operates the regulation control is forgotten. Even if the auger manual lever 41 is continuously operated from the outside of the region R in the restricting region R direction (S19 → NO), the discharge auger 8 always stops at the boundary position of the restricting region R (S22).
Then, once the auger manual lever 41 is brought into a non-operating state and then operated again (S19 → YES), the discharge auger 8 can enter the restriction region R while the electronic buzzer 82 is sounded intermittently (S23). It is possible to perform maintenance work safely.

Further, in the second embodiment of the auger restriction release control of the present invention, as shown in FIG. 15, it is determined whether or not the current position of the discharge auger 8 is in the auger restriction area R in S26. Next, if it is within the regulation region R, the electronic buzzer 82 is set to sound an intermittent sound in S28, and the process proceeds to S29.
The state of the inching timer is determined in S29. If 0, the temporary stop flag is turned OFF in S31 and the process proceeds to S32. If not 0, the process proceeds to S32.
The state of the inching timer is determined in S32, and if it is less than the predetermined value, the turning and lifting output set of the discharge auger 8 is cleared and proceeds to the next in S33.

That is, when the discharge auger 8 enters the restriction region R from outside the restriction region R (S26 → YES), the operation speed of the discharge auger 8 is set to the restriction region R while the electronic buzzer 82 is sounded intermittently (S28). By making the auger lift valve and the auger turning motor inching operation (S29 to S33) slower than the outside, it is easy to avoid even if you feel danger, and even if it comes in contact, the impact is small, so maintenance work should be done with peace of mind Can do.
In addition, the present embodiment is performed at any time of turning and raising / lowering, but either one of turning and raising / lowering may be performed.

  Further, in the third embodiment of the auger restriction release control of the present invention, as shown in FIG. 16, it is determined in S36 whether the current position of the discharge auger 8 is within the auger restriction area R. Next, if it is within the regulation region R, the distance from the center of the regulation region R to the current position of the discharge auger 8 is calculated at S38, thereby setting the period of the intermittent sound generated from the electronic buzzer 82, and at S39 the electronic buzzer. 82 is set so that an intermittent sound is sounded at the set cycle, and then proceeds.

  That is, when the discharge auger 8 enters the restriction region R from outside the restriction region R (S36 → YES), specifically, the shorter the distance from the center of the restriction region R to the current position of the discharge auger 8, the more electrons Since the intermittent sound of the buzzer 82 becomes faster, maintenance work can be performed safely by making the operator more careful.

Further, in this embodiment, each restriction release control is performed based on the entry into the restriction region R, but the restriction region R outer end adjacent to the restriction region R, or the restriction region R and the outside of the restriction region R are You may control based on an adjacent boundary position (boundary range).
Further, in this embodiment, the restriction release control is also performed based on the restriction region R in which the normal restriction control is performed. However, the restriction region R at the time of the restriction release may be changed to that before the restriction release.
Moreover, although the present embodiment uses the electronic buzzer 82 as an alarm device, it can be used as an alarm device as long as it can be confirmed from the surroundings of the control unit 10 and the combine 1 such as a direction indicator and a work light.
In addition, this embodiment can further improve safety by combining and executing the three embodiments at the same time.

It is a right view of a combine. It is a top view of a combine. It is a top view of a control part. It is a step perspective view of a control part. It is a step right side view of a control part. It is a fragmentary sectional view of the control unit in front view. It is a fragmentary sectional view of a control part perspective view. It is a fragmentary sectional view of the side view of the grain tank lower back. FIG. 9 is a second embodiment of the vertical spiral of FIG. 8. FIG. FIG. 9 is a third embodiment of the vertical spiral of FIG. 8. FIG. It is a control block diagram of the present invention. It is a top view which shows the turning range of the discharge auger of this invention. It is a discharge auger control flowchart figure of this invention. It is 1st Example of the auger regulation cancellation | release control flowchart figure of this invention. It is 2nd Example of the auger regulation cancellation | release control flowchart figure of this invention. It is 3rd Example of the auger regulation cancellation | release control flowchart figure of this invention.

Explanation of symbols

8 discharge auger 41 auger manual lever (auger operating tool)
66 Microcomputer (control unit)
82 Electronic buzzer (alarm)
R regulatory domain

Claims (3)

A discharge auger (8) that can be swung and lifted up and down with respect to the machine body, an auger operating tool (41) that swivels and lifts the discharging auger (8), and a discharge auger ( 8) and a control unit (66) for turning and raising / lowering,
An auger regulation control in which a regulation area (R) is set within a predetermined turning range of the discharge auger (8) and within a set height, and the discharge auger (8) is prohibited from entering the regulation area (R). In a combine discharge auger with means,
When the control unit (66) determines that the discharge auger (8) is located in the restriction region (R) when the auger restriction control means is invalid, the restriction releasing means for invalidating the auger restriction control means is provided. The combined discharge auger is characterized in that the controller (66) outputs to the alarm device (82). A discharge auger (8) that can be swung and lifted up and down with respect to the machine body, an auger operating tool (41) that swivels and lifts the discharging auger (8), and a discharge auger ( 8) and a control unit (66) for turning and raising / lowering,
An auger regulation control in which a regulation area (R) is set within a predetermined turning range of the discharge auger (8) and within a set height, and the discharge auger (8) is prohibited from entering the regulation area (R). In a combine discharge auger with means,
It comprises a regulation releasing means for invalidating the auger regulation control means, and controls that the discharge auger (8) tries to enter the regulation area (R) from outside the regulation area (R) when the auger regulation control means is invalid. When the unit (66) determines, the control unit (66) stops the discharge auger (8), and the combine discharge auger. A discharge auger (8) that can be swung and lifted up and down with respect to the machine body, an auger operating tool (41) that swivels and lifts the discharging auger (8), and a discharge auger ( 8) and a control unit (66) for turning and raising / lowering,
An auger regulation control in which a regulation area (R) is set within a predetermined turning range of the discharge auger (8) and within a set height, and the discharge auger (8) is prohibited from entering the regulation area (R). In a combine discharge auger with means,
When the control unit (66) determines that the discharge auger (8) is located in the restriction region (R) when the auger restriction control means is invalid, the restriction releasing means for invalidating the auger restriction control means is provided. The control unit (66) makes the operating speed of the discharge auger (8) slower than outside the restricted area.

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