JP4420220B2 - Grain discharger - Google Patents

Description

  The present invention relates to a combine grain discharging apparatus for harvesting grains in a field.

  A combine harvester with a traveling crawler and a front side of the traveling frame weeds the planted culm, then causes the planted culm to harvest and harvests the planted culm, and holds the harvested culm Supply and transport device that transports backward, threshing device for threshing and sorting cereals, a Glen tank that temporarily stores the grains threshed and sorted by the threshing device, and the grains in the Glen tank outside the combine Equipped with a grain discharging device for discharging.

In arranging the operation switch of the conventional combine grain discharging apparatus in the vicinity of the rear of the operation lever, the invention is arranged such that the operation switch of the grain discharging apparatus is located at a position higher than the upper end of the highest operation lever No. 18912).
JP 2003-18912 A

  If the operation switch of the conventional combine grain discharging device is turned on and the engine is started from a state where the engine is stopped, the straw is inadvertently discharged from the grain auger.

  An object of the present invention is to turn on a switch for operating a grain discharging device, and to remove a grain discharging device that does not inadvertently discharge straw from a grain auger even if the engine is started from a state where the engine is stopped. Is to provide.

The above-described problems of the present invention are solved by the following configuration.
That is, the grain discharge means for exiting exhaust kernels of grain tank (3) in which to temporarily store the harvested grain in the external Ri by the engine power (10), an endless belt for power transmission (43 ), An input pulley ( 45 ) for the grain discharging means (10) driven by the endless belt (43), and a tension roller ( 44 b ) for pressing the endless belt (43). It has a movable tension arm ( 44a ) and a tension motor ( 44 ) for operating the tension arm ( 44a ) , and the tension arm ( 44a ) starts to operate from the operation start position (A), and the belt (43 ) To reach the position (B) where the tension arm (44a) drives the pulley (45) to activate the grain discharging means (10), and the tension arm (44a) And the operation starting position discharge switch to "OFF" to stop the grain discharge means (10) back to (A) a clutch device (12), the illumination switch for turning on and off operation of the tensioning motor (44) and (46) When the illumination switch ( 46 ) is turned on, the tension arm ( 44 a ) lights up at the same time as the operation start from the operation start position (A) to turn the discharge clutch device (12) from “OFF” to “ON”, and the discharge clutch during device (12) is operating maintaining the lighting state, the tension arm (44a) is discharged clutch device again (12) to stop I return to the operation starting position to the "oFF" (a), discharge clutch apparatus (12) when the Ru is completely cut operation for the first time off for illuminating the switch lamp (47), after entering the discharge clutch device (12), that the set time elapses discharge And the discharge mode selection switch for selecting the discharge mode off clutch device (12) (53), prohibits the operation of the lighting sometimes engine illuminated switch lamp (47), discharging a clutch device according to the tension motor (44) (12) together to enable the first engine operation after a full cut operation, the setting time in accordance with the engine rotational speed detected by the engine speed sensor (57) when the discharge mode selection switch (53) is pressed It is a grain discharging apparatus provided with the control apparatus ( 50 ) which sets up .

According to the present invention, the position of the tension roller 44b can be grasped by key-on (in a state where the power is turned on and the engine is not started). In addition, after the start of the engagement operation of the discharge clutch device 12 by the tension motor 44, the operation of the engine is prohibited, and the engine can be operated only after the discharge clutch device 12 by the tension motor 44 is completely disconnected. The safety of the grain discharging device can be ensured. Furthermore, the on / off state of the discharge clutch device 12 can be confirmed by turning on / off the illumination switch lamp 47, which makes it easy for the operator to understand.
Further, by setting the time from the start to the stop of grain discharge according to the engine speed detected by the engine speed sensor 57 when the discharge mode selection switch 53 is pressed, Since the rotational speed of the grain discharging means 10 for discharging the grain is proportional to the engine rotational speed, it becomes possible to make the discharged amount of the grain constant.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a left side view of the combine of the present invention, FIG. 2 is a front view of the combine, FIG. 3 is a rear view of the combine, and FIG. FIG.

The outline of the function of a combine is demonstrated with reference to FIGS.
The combine is provided with a cockpit 40 on the chassis 2 having the crawler 1, and in the cockpit 40, the operator steers and operates the harvesting device 34 that harvests the grain to be planted in the field, and the harvested grain straw. , The threshing device 37 for threshing the grain, the grain tank 3 for housing the threshed grain, and the bottom spiral 10 (FIG. 4) provided at the bottom of the grain tank 3. Cereals auger 5 that conveys the cereal grains to the outside of the combine.

  The cereal auger 5 is connected to the rear end of the bottom spiral 10 and connected to the cereal cylinder 4 and the cereal cylinder 4 that conveys the grain upward, and the fixed conveying cylinder 6 that conveys the grain in the lateral direction, and It consists of a moving conveyance cylinder 7 and the like. At the front end of the movable transfer cylinder 7, a grain auger discharge port 9 is provided.

  The combine shown in FIG. 1 has a pair of left and right crawlers 1 molded into an endless belt made of a flexible material such as rubber at the bottom of the chassis 2, and the crawler 1 slightly sinks in wet fields as well as dry fields. A cutting device 34 is mounted on the front portion of the chassis 2, and an engine (not shown), a grain tank 3, a threshing device 37, and a cockpit 40 are provided on the chassis 2. ing.

  The grain stored in the grain tank 3 of the combine is discharged from the bottom spiral 10 provided at the bottom of the grain tank 3. As shown in FIG. 3, the bottom spiral 10 is mounted on the bottom of the Glen tank 3 and has a start end connected to a transmission shaft 11 outside the machine via a clutch device 12 and a terminal end lifted. It extends to the lower part of the grain cylinder 4 and is configured to be connected to the lower end part of the whipping spiral 13 that is internally provided.

  And the cerealing auger 5 (FIG. 4) is comprised from the fixed conveyance cylinder 6 connected to the upper part of the said whipping cylinder 4 to an up-down direction freely, and the movement conveyance cylinder 7 connected to this, The configuration will be specifically described below.

  First, as shown in FIG. 4, the fixed conveying cylinder 6 is provided with a base portion connected to an upper portion of the cerealing cylinder 4 and a distal end portion extending outward, and a start end portion is provided in the cylinder. It is the structure which conveys the grain inherited from the whipping cylinder 4 by decorating the conveyance spiral 14 connected to the grain helix 13.

  As shown in FIG. 4, the moving conveyance cylinder 7 is provided with a cereal auger discharge port 9 opened at the tip, and the base side is slidably connected to the fixed conveyance cylinder 6. Further, as shown in FIG. 4, the telescopic spiral 15 has a front end bearing at a position above the cerealing auger outlet 9 and a rear portion extending toward the fixed transport cylinder 6 in the moving transport cylinder 7, and the transport spiral 14. A transmission shaft 16 that is freely slidably inserted into the shaft is provided so as to be slidably mounted, and a plurality of spiral single members are slidably fitted to the transmission shaft 16 so that the mutual distance can be adjusted. .

  Moreover, as shown in FIG. 4, the expansion / contraction drive device 23 has connected the base end part of the helical shaft 25 to the expansion / contraction drive motor 24 equipped in the upper position of the cereal cylinder 4 via the reduction gear, In this configuration, the helical shaft 25 is forcibly driven by the drive motor 24. The moving device 26 is provided so as to be forcibly moved in the axial direction via a transmission pin engaged with the spiral groove of the spiral shaft 25, and is integrally connected to the base side of the fixed conveying cylinder 6. Configured.

  In addition, as shown in FIG. 4, the expansion / contraction drive device 23 is provided with limit sensors S1 and S2 on the most contracted side and the most expanded side of the grain auger 5, respectively, and the moving device 26 is connected to the limit sensor S1 or the limit sensor S2. When it reaches, the expansion / contraction drive motor 24 is automatically stopped.

  Further, although the position of the front end portion of the movable transfer cylinder 7 can be variously changed, the position of the front end portion of the cerealing auger 5 is stored in the threshing auger receiver 35 at an intermediate position of the length of the zoom type cerealing auger 5. There are many cases.

  The expansion / contraction drive motor 24 is driven in the forward or reverse direction to rotate the spiral shaft 25 based on an ON operation of a switch (expansion switch) provided on an operation panel (not shown) of the cockpit 40. If the spiral shaft 25 rotates in the forward direction, the movable transfer cylinder 7 is extended via the engaged moving device 26, and if it rotates in the reverse direction, it is forcibly moved in the reduction direction.

  In this way, the moving transport cylinder 7 is stretched and contracted along the fixed transport cylinder 6 in a state of being fitted to the fixed transport cylinder 6, and the position of the cereal auger discharge port 9 at the tip thereof is changed to the threshing auger 5. It is set as the structure which can select the fall position of a grain by moving away from, or approaching, and adjusting with respect to the whipping cylinder 4 of the base.

  In FIG. 4, the lifting hydraulic cylinder 27 raises and lowers the grain auger 5, and the grain auger turning motor 28 is a drive provided on the outer periphery of the milling cylinder 4 that meshes with a turning gear 29 provided on the rotating shaft thereof. The milling cylinder 4 is turned through the gear 30.

  As shown in FIG. 4, the support roller 31 is pivotally provided at the lower part of the base position of the moving conveyance cylinder 7 and supports the fixed conveyance cylinder 6 while rolling on the peripheral surface of the fixed conveyance cylinder 6. is there. A guide wheel 32 is provided above the base position of the movable transfer cylinder 7, and a guide rail (not shown) for guiding the guide wheel 32 is provided along the longitudinal direction of the fixed transfer cylinder 6.

  When the combine configured as described above is moved forward while the harvesting operation is being performed on the planted culm, the planted culm is harvested by the harvesting device 34 (FIG. 1), and then conveyed to the start end of the threshing device 37. Threshing and sorting while being conveyed in the feed chain. The grain that has been threshed and sorted by the threshing device 37 is temporarily stored in the grain tank 3, and when the grain in the grain tank 3 is full, the grain auger 5 is detached from the grain harvesting auger receiver 35 (FIG. 4). Then, the grain is discharged from the grain auger 5 to a loading platform such as a truck.

  At this time, when the position of the grain auger discharge port 9 is a length that does not reach the loading platform such as a truck, the movable transfer cylinder 7 is extended so that the grain can be discharged further. Moreover, the moving conveyance cylinder 7 is expanded and contracted so that the grains are uniformly discharged to the truck bed. In this manner, when the grain in the Glen tank 3 is completely discharged, the cereal auger 5 is stored again in the cereal auger receiver 35.

  The telescopic helix 15 of the movable transfer cylinder 7 shown in FIG. 4 is composed of a plurality of single helixes made of synthetic resin.

  FIG. 5 is a simple block diagram of the control device 50 related to the control of the grain auger 5 according to the embodiment of the present invention. The illumination switch 46 for turning on and off the discharge clutch device 12 and the position detection sensor for the discharge clutch device. 48, a discharge mode selection switch 53, an accelerator position sensor 49 for the engine, and an engine speed sensor 57 are connected to the input side of the control device 50. On the output side of the control device 50, a discharge clutch tension motor 44, an illumination lamp switch 47, etc. Is provided.

In the present embodiment, on / off control of the discharge clutch device 12 (see FIG. 4) that transmits the engine driving force to the bottom spiral 10 in the Glen tank 3 is performed by turning on / off the tension motor 44 that controls the operation of the tension roller 44b with power Moreover, the on / off control of the discharge clutch device 12 can be confirmed by turning on / off the illumination switch lamp 47.

  In this embodiment, as shown in FIG. 5, a momentary illumination switch 46 is provided as an on / off switch for the discharge clutch device 12, and when the operator turns on the illumination switch 46, the discharge clutch device 12 is turned on. The tension motor 44 starts operating and the tension arm 44a starts operating.

As shown in FIG. 6, the discharge clutch device position detection sensor 48 detects the position (A) at which the tension arm 44a starts to operate, and this position (A) is stored in the memory in the control device 50. . At the same time, since the illumination switch lamp 47 is turned on, the operator can confirm that the tension arm 44a has started to operate. However, at this time, the tension arm 44a is not operated until the tension roller 44b operates the discharge clutch device 12.

  Thereafter, when the tension arm 44a moves by a predetermined amount, the tension roller 44b stretches the belt 43, the pulley 45 operates, and the discharge clutch device 12 starts operating. At this time, the tension motor 44 is turned off, and at the same time, the position (B) at which the discharge clutch device 12 starts to operate is detected by the discharge clutch device position detection sensor 48, and this position (B) is stored in the memory in the control device 50. Let me.

When the engine starter key (not shown) is turned to turn on the power, the illumination switch lamp 47 is turned on. If the illumination switch lamp 47 is in the on state, the engine can be operated even if the operator turns the engine starter to the engine start side. Does not start. This is because, since the discharge clutch device 12 is included, the bottom spiral 10 of the Glen tank 3 rotates when the engine is started, and soot is discharged carelessly.

  Next, when the illumination switch 46 is turned off, the tension motor 44 starts to operate and the tension arm 44a enters the discharge clutch device 12, that is, the tension roller 44b stretches the belt 43 and the discharge clutch device 12 operates ( When returning to the stop position (A) from B), the tension motor 44 is stopped, and at the same time, the illumination switch lamp 47 is also turned off.

  Since the discharge clutch device 12 is completely turned off when the illumination switch lamp 47 is turned off, that is, it can be seen that the tension roller 44b is completely separated from the belt 43, at this time, the control device is controlled by a signal from the discharge clutch device position detection sensor 48. 50 makes the engine startable.

In this way, the illumination switch lamp 47 is turned on / off according to the detection value of the discharge clutch device position detection sensor 48, and the on / off state of the discharge clutch device 12 can be confirmed by turning on / off the illumination switch lamp 47. At the same time, the engine can be started only when the exhaust clutch device 12 is completely turned off to ensure safety.

  As described above, when the engine starter key is turned to turn on the power, if the discharge clutch tension motor 44 is turned on, the discharge clutch device 12 is in the on state. When the operation is started, the operation of discharging the grain from the discharge auger 5 in a state where it is not ready to receive the grain starts. In order to prevent such a situation, the control device 50 according to the present embodiment performs control so that the engine does not operate even when the engine key is further turned when the discharge clutch tension motor 44 is turned on.

  The discharge clutch device position detection sensor 48 that detects the on / off position of the discharge clutch device 12 includes a potentiometer (not shown) that detects the position of the tension arm 44a at the operation position and the stop position of the belt 43 by the tension roller 44b. Used. In place of the potentiometer, a limit switch (not shown) arranged in the vicinity of the swinging region of the tension arm 44a at the operation position and the stop position of the belt 43 by the tension roller 44b may be used.

  Further, as another example of the discharge clutch device position detection sensor 48 for detecting the on / off position of the discharge clutch device 12, a limit switch (not shown) provided in the discharge clutch tension motor 44 can be used. At this time, if the limit switch is configured to detect the operating position of the tension arm 44a when the discharge clutch device 12 is turned off, the position of the discharge clutch device can be detected with an inexpensive limit switch.

  Further, when the limit switch detects that the discharge clutch device 12 is completely disconnected at the operating position of the tension arm 44a, the engine can be started.

  Compared to the conventional configuration in which two limit switches are arranged in the vicinity of the swinging regions on both sides of the tension arm 44a to detect the presence or absence of the tension of the discharge clutch device 12, the discharge clutch tension motor 44 is built in. Since the discharge clutch device position detection sensor 48 is formed using only one limit switch, it can be configured at low cost. Further, since the limit switch on the cut-off side of the discharge clutch device 12 is used, the illumination switch lamp 47 is turned off only when the discharge clutch device 12 is completely cut off, and the engine can be started. Become.

  A combine 53 having a mechanism for operating the discharge clutch device 12 of the present embodiment by a tension motor 44 and capable of controlling the operation is provided with a switch 53 capable of selecting a discharge mode of the grain from the grain tank 3. Yes.

  And when the said grain discharge mode selection switch 53 is not operated, normal grain continuous discharge | emission can be performed using the illumination switch 46 as a grain discharge switch. Further, when the grain discharge mode selection switch 53 is operated, the discharge of the grain from the grain auger 5 is automatically stopped after a lapse of a predetermined time from the start of the grain discharge.

  The reason for providing such a grain discharge mode selection switch 53 is to eliminate the following problems during the grain discharging operation, which is so-called bag removal. That is, in the so-called bag removing operation, an operator in the cockpit 40 starts the grain discharging operation, while an assistant outside the combine holds a bag near the discharge port 9 at the tip of the grain auger 5. Although the kernel is received, the operator performs the kernel discharging operation or stops at the assistant's signal during this work, but when the timing of both does not match, there is a problem that the kernel overflows from the bag There is.

  In order to solve the above-mentioned problems, by turning on the grain discharge mode selection switch 53, it is possible to perform the grain discharging operation while discharging the grain by an appropriate amount or a small amount, and the discharging operation at the time of bag removal is performed. It will be very easy. In addition, even if the operator forgets that the so-called bag removal operation is in progress, the grain discharge from the grain auger 5 is automatically stopped after a predetermined time has elapsed since the start of grain discharge. The grain never overflows.

  In addition, the discharge mode selection switch 53 may be pressed while the grain is being discharged from the grain auger 5 in a state where the discharge mode selection switch 53 is not pressed.

  In such a case, control to immediately stop the grain discharge is performed. This is because there is a possibility that there was an erroneous operation at the time of grain discharge, so that the grain discharge is first stopped urgently so that the grain is not discharged unnecessarily.

  In addition, forgetting to press the discharge mode selection switch 53, the illumination switch 46 may be pressed to perform normal grain discharge, and so-called bagging may be started. During the bagging, the operator may forget to press the discharge mode selection switch 53, and may suddenly press the discharge mode selection switch 53. In such a case, the grain discharge stop control is executed. Then, once the grain discharge is stopped, it is possible to give a margin for thinking about the operation to be performed next.

  Moreover, you may discharge | release a grain slowly by lowering | hanging a grain discharge speed instead of the said grain discharge stop control. At this time, the grain discharge speed can be lowered by lowering the engine speed, for example, from the rated speed.

  On the other hand, even if the discharge mode selection switch 53 is turned on and the discharge mode selection switch 53 is turned off during execution of the grain discharge operation, the grain discharge operation is continued until the predetermined time set at the start, and the bagging is started once. The grain discharge control is completed.

  Further, when the discharge mode selection switch 53 is turned on and the discharge mode selection switch 53 is turned off during execution of the grain discharge operation, if the illumination switch 46 for discharging the grain is turned on, the normal mode is continuously changed. You may employ | adopt the mode which stops a grain discharge | emission operation | movement and stops a grain discharge | emission when the illumination switch 46 turns off.

  Further, when the discharge mode selection switch 53 is pressed, the engine speed of the combine is detected by the engine speed sensor 57, and the time from the start to the stop of the grain discharge according to the detected engine speed. May be set. This is because the rotational speed of the Glen tank bottom spiral 10 for discharging the grain from the Glen tank 3 is proportional to the engine rotational speed, and this control makes it possible to make the amount of grain discharged constant. Become.

  Further, when the combine has an engine speed control mechanism and the discharge mode selection switch 53 is pressed, the engine speed is set at the time of normal grain discharge (usually at the rated engine speed) at the start of grain discharge. The engine rotational speed may be lowered to a lower predetermined rotational speed).

  This is because the assistant may not be ready for bagging at the beginning of the so-called bagging operation, so when so-called bagging, adjust the grain discharge rate slowly and make this operation safe and easy. It is to do.

  The present invention can be applied to a grain tank such as a combine.

It is a left view of the combine of embodiment of this invention. It is a front view of the combine of FIG. It is a rear view of the combine of FIG. It is a figure explaining the structure of the threshing auger part for the mashing of the combine of FIG. It is a block diagram of discharge | emission control of the combine grain reduction auger of FIG. Figure 1 Combine tension arm operating the Re tension roller and its for HaiKoku clutch is a diagram showing the relationship between the belt and motor.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Crawler 2 Chassis 3 Glen tank 4 Flouring cylinder 5 Graining auger 6 Fixed conveyance cylinder 7 Moving conveyance cylinder 9 Graining auger discharge port 10 Bottom spiral 11 Transmission shaft
DESCRIPTION OF SYMBOLS 12 Clutch apparatus 13 Grain raising helix 14 Conveying helix 15 Telescopic helix 16 Power transmission shaft 23 Telescopic drive device 24 Telescopic drive motor 25 Spiral shaft 26 Moving device 27 Lifting hydraulic cylinder 28 Graining auger turning motor 29 Turning gear 30 Drive gear 31 Support roller 31 32 guide wheel 34 cutting device 35 HaiKoku auger receiving 37 threshing apparatus 40 cockpit 43 belt 44 tensioning motor 44a tension arm 44b tension roller 45-pulleys

Claims (1)

Grain discharge means for exiting exhaust kernels of grain tank (3) in which to temporarily store the harvested grain in the external Ri by the engine power (10),
Endless belt (43) for transmission, input pulley ( 45 ) of grain discharging means (10) driven by the endless belt (43), and tension roller ( 44b ) for pressing the endless belt (43) ) and swingable tension arm with a tip (44a) actuating, and a said tension arm (44a) tension motor for actuating (44), the tension arm (44a) from the operation start position (a) "On" to activate the grain discharging means (10) by pressing the belt (43) and reaching the position (B) where the tension arm (44a) drives the pulley (45) by pressing the belt (43), A discharge clutch device (12) that switches the tension arm (44a) to "off" to return the operation start position (A) to stop the grain discharge means (10);
Illuminated switch for turning on and off operation of the tension motor (44) and (46),
When the illumination switch ( 46 ) is turned on, the tension arm ( 44 a ) lights up at the same time as the operation starts from the operation start position (A) so as to change the discharge clutch device (12) from “OFF” to “ON”. (12) maintaining a lighting state while is operating, the tension arm (44a) is discharged clutch device again (12) to stop I return to the operation starting position to the "oFF" (a), discharge clutch device (12) When Ru is completely cut operation for the first time off the illuminated switch lamp (47),
A discharge mode selection switch (53) for selecting a discharge mode to turn off the discharge clutch device (12) when a set time elapses after the discharge clutch device (12) is turned on;
Prohibits the operation of the lighting sometimes engine illuminated switch lamp (47), while allowing the first engine operation after a full cut operation of the discharge clutch device according to the tension motor (44) (12), the discharge mode selection switch A control device ( 50 ) for setting the set time according to the engine speed detected by the engine speed sensor (57) when (53) is pressed.
A grain discharging apparatus comprising:

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