JPH0543326B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hopper shutter control device for a combine harvester, a harvester, etc., and particularly for automatically filling a paddy bag with paddy from the hopper and removing auxiliary paddy from the space below the hopper. The present invention relates to a hopper shutter control device suitable for application to a combine harvester equipped with an automatic paddy filling device for sending out paddy to a receiving floor.

Generally, the larger the capacity of the hopper device in a combine harvester or the like, the longer the working time can be continuously performed at one time, which is desirable in terms of work efficiency. However, the capacity of the hopper is usually limited by the number of paddy bags that can be attached to the outlet, and it is difficult to increase the paddy storage capacity at one time, including the amount of paddy packed into the paddy bags attached to the outlet. , it was necessary to increase the number of discharge ports. On the other hand, since the space in the hopper part of a combine harvester is limited, it is not possible to increase the number of discharge ports unnecessarily, and if multiple rows are installed inside and outside the machine, it is difficult to attach empty bags to the discharge ports inside the machine. Also, the task of removing a full bag has become very troublesome. In addition, it is possible to increase the hopper capacity regardless of the number of installed bags.According to the hopper device, the shutter at the first discharge port can be closed by the paddy sensor, but the subsequent shutter can be closed by the paddy sensor. The closing operation could not be performed with a simple paddy sensor and required a large number of very expensive sensors.

In particular, when equipped with an automatic paddy filling device, it is not possible to increase the number of hopper discharge ports, and the paddy bagging work and the sending out of full bags are performed extremely efficiently, so the automatic paddy filling device functions effectively. In order to do this, it is necessary to increase the capacity of the hopper and be able to pack a large amount of paddy at one time.

The present invention was made in view of the above circumstances, and although it has an extremely simple structure, it enables a predetermined amount of paddy to be placed into a paddy bag many times from a large-capacity hopper, thereby significantly improving work efficiency. It is an object of the present invention to provide an improved hopper shutter control device.

The features of the present invention include a paddy sensor wrapped around a paddy bag and placed at the large-capacity hopper discharge port, and a timer that starts counting a predetermined time from detection of the open position of the shutter. In relation to the driving means, the shutter opening/closing driving means is driven in the direction in which the shutter is opened based on a signal from the open signal transmitting means while the paddy sensor is detecting the presence of paddy, and the shutter opening/closing driving means is driven in the direction in which the shutter is opened and the shutter is in the closed position. A timer starts counting based on the operation of the detection means, and based on a signal that the timer has elapsed for a predetermined time while the paddy sensor is detecting the presence of paddy, or a signal that the paddy sensor has detected the absence of paddy, A shutter control device for a hopper is configured to close a shutter by driving a shutter opening/closing drive means.

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, the combine 1 has a paddy filling section 3 behind the driver's seat 2.
The paddy filling part 3 is provided with a hopper 5 and a space A below the hopper 5. In the space A, paddy bags 7 are hung in two rows by four hanger bars 6, and the paddy bags 7 are hung in the center so that the central end of the paddy bags 7 can be hung. A bag feeding device 9 is provided.

On the other hand, the hopper 5 has two discharge ports 10, 10, and an auto shutter 11 is slidably inserted into the discharge ports 10, as shown in FIGS. 3 and 4. At the same time, a shutter cover 12 is fixedly installed above it. The auto shutter 11 is made of a hollow member with a square cross section, and opens when slid downward as shown by the solid line in Figure 3.
The upper end of the shutter cover 1 slides upward.
It is closed when it is fitted with 2. Further, a plate 13 is fixed to the autoshutter 11 so as to protrude from the hopper 5, and an arm 16 is connected to the plate 13 via a pin 15 and a long hole 16a (see FIGS. 1 and 2). figure). The arm 16 is connected to an auto shutter opening/closing motor 20 via a shaft 17 or a link 19, and therefore, the two left and right auto shutters 11 are synchronized by forward and reverse rotation of the motor. It opens and closes.
In FIG. 3, S1 is a paddy sensor, S2 and S3 are open/close position detection switches of the auto shutter 11, and m is paddy.

On the other hand, the paddy bag feeding device 9 is shown in FIGS.
As shown in the figure, it has a chain case 21 that serves as a guide surface, and the case 21 is rotatably supported at the back side of the space A and is connected to a transport motor 22. A drive sprocket 23 is supported. Further, a chain 26 is wound between the drive sprocket 23 and the floating sprocket 25 on the tip side.
A support 27 having a roller is connected to a predetermined location of 6. The support 27 has brackets 29 extending to the left and right hanger bars 6.
(Fig. 1) is fixed, and the bracket 29
A magnet 29a that attracts the metal fittings of the rice bag 7 is fixed to the. Further, a clamping arm 30 is rotatably supported on the support 27 so as to face the magnet 29a, and the arm 30 is guided by a cam surface 21a on the lower surface of the case 21 and is switched between a clamping position and a release position. . Further, the tip of the case 21 is connected to the auto shutter 11 via a link 31, and in conjunction with the vertical movement of the shutter 11, the paddy bag feeding device 9 swings to the position shown by the solid line and the position shown by the chain line. move. In FIG. 5, reference numeral 32 denotes a stopper plate for stopping the bag, which is configured to be retractable by a spring 33 and a rod 35. Further, S5 and S6 are reverse switches provided on the plate 32, and S7 is a potentiometer for detecting the position of the magnet 29a and the arm 30. Further, in FIGS. 5 and 6, reference numerals 36 and 36 indicate bag stoppers, which are driven by a rotary solenoid 61 in a direction parallel to the plane of FIG. 6.

An automatic rice bag opening device 37 is disposed at the discharge port 10 of the hopper 5, and the bag opening device 37 has a gear case 39 as shown in FIGS. 8 and 9. However, a large number of gears 40a to 40e are built into the case. The drive gear 40a is connected to a bag opening device drive motor 41 (FIG. 1) via a transmission shaft 38, and gears 40d and 40 mesh with each other and have the same number of teeth.
Arms 42 and 43 are connected to e, respectively. The arms 42 and 43 are arranged so as to intersect with each other, that is, the arm 42 extending toward the front of the hopper 5 is connected to the gear 40d on the rear side via a shaft 40d' projecting outward from the case 39. An arm 43 extending toward the back of the hopper 5 is connected to a gear 40e on the front side via a shaft 40e' projecting inward of the case 39. Furthermore,
At the tips of these arms 42 and 43, paddy bag adsorption devices 45 and 45 are rotatably supported, respectively, and the devices 45 are connected to a cover 46 and a bag opening magnet 47.
have. In addition, in the figure, S9 and S10 are upper and lower limit position switches of the suction device 45, and the drive gear 40
It is controlled by an arm 49 provided at a.

Then, as shown in FIGS. 10 and 11,
The suction device 45 is pivotally supported by arms 43 and 42 at its upper part, and together with a balance spring 53 (FIG. 12) to be described later, the magnet 47 is always oriented vertically, and the magnet 47 is centered. The magnets 47 of the pair of adsorption devices 45 have opposing surfaces having the same polarity. Furthermore, a bush 49 having a female thread is fitted and fixed in the hole 47a of the magnet, and a sleeve 50a welded to the center of the bracket 50 is attached to the bush 49.
is screwed on with a male thread formed on its outer periphery. A rod-shaped actuator 51 is slidably guided in the sleeve 50a.
A return spring 52 is compressed between the cylindrical bulging inner end of the actuator 51 and the cover 46 which is fitted and fixed to the bracket 50. Therefore, the actuator 51 is always urged to be in the protruding position as shown by the chain line in FIG. An open bag detection switch S11 is arranged so as to be in contact with the bag opening detection switch S11. The switch S11 is a normally closed switch, and therefore, in the position where the actuator 51 protrudes and contacts the cam portion 51a (the chain line position), the switch S11 is a normally closed switch.
It is OFF, and the actuator 51 comes into contact with the paddy bag 7 and retracts, and is turned ON at a position away from the cam portion 51a (solid line position). In addition, 48 in the figure is a magnet 47
This is an interference material made of rubber, plastic, etc. provided at the center of the attraction surface of the magnet 47, and prevents the magnets 47 from attracting each other. In addition, as shown in FIGS. 12 and 13, the arms 43, 42 and the suction device 45
A balance spring 53 consisting of a torsion spring is disposed between the spring 53 and
acts on the back surface of the magnet 47, and when the adsorption device 45 is in the raised position, that is, when the arms 43, 42 are close to horizontal and there is a large angle between the arms and the adsorption device 45, the biasing force is weakly, and when the suction device 45 is in the lowered position, that is, the arm 4
3 and 42 are nearly vertical, and the arm and suction device 45
When the angle between the two is small, the biasing force acts strongly. Therefore, the surfaces of the magnets 47 of the pair of adsorption devices 45 face each other substantially parallel to each other, and move up and down while maintaining this surface state.

Further, in the space A, as shown in FIG. 17, a movable paddy receiving floor 62 is supported movably on a guide rail 63, and the movable paddy receiving floor 62 is moved in the directions of arrows C and D by a drive cylinder 65. That is, it can be moved and driven within the space A and over the auxiliary paddy receiving floor 64. Guide rail 63
There are micro switches 6 near both ends in the C and D directions.
6 and 67 are provided so as to be able to freely abut and engage with brackets 62b and 62a provided on the movable paddy receiving floor 62, and the movable paddy receiving floor 62 is further provided with a paddy bag detection sensor consisting of a light emitting part 69a and a light receiving part 69b. 6
9 is provided. In addition, a mobile paddy receiving floor 6
2, a back support arm 70 is provided so as to be movable in the directions of arrows E and F in synchronization with the movement of the movable paddy receiving floor 62 in the directions C and D based on a cam.

In addition, FIG. 18 shows each sensor adopted in the combine harvester 1, a motor, a solenoid, etc. that is a driving means, and a device installed in the combine harvester 1, which shows how to open the paddy bag of the combine 1 and transfer paddy to the opened paddy bag. The state of connection with a microprocessor 71 that comprehensively controls operations such as turning on the microprocessor is shown.

On the other hand, as shown in FIGS. 14 to 16, the paddy bag 7 has metal fittings 55 made of iron plates at both ends of its upper part.
is sandwiched therein, and an aluminum eyelet 56 having a hole 56a for the hanger bar 6 is caulked into the metal fitting 55 with an eyelet. Also,
Suction devices 45 are installed on both sides of the upper center of the paddy bag 7.
A metal fitting 57 is provided to serve as a target. Metal fittings 57
consists of four iron bars 57a on discs such as washers, with a cloth 59 such as vinyl interposed between them and the bag 7, and sewn into the bag 7 by the same cloth 59. In addition, as shown in FIG. 9, the discharge port 10 of the hopper 5 is connected to the flow of paddy inside the hopper, etc.
Although it is slightly offset from the center of the hanger bar 6,
The metal fitting 57 is located at the center of the rice bag 7, that is, at the center (L/2) of the hanger bar 6.

Next, the operation of this embodiment having the above-described configuration will be explained.

The magnet bracket 29 and arm 30 of the paddy bag dispensing device 9 are on standby at position A in FIG. From this state, press the start button S of the paddy filling device.
12 (see Figure 1), a start command pulse SP is output from the start button S12 to the microprocessor 71, as shown in Figure 19a.
As a result, the microprocessor 71 enters the automatic control state (ie, the level "1" in the figure indicates the automatic control state) as shown in FIG. The microprocessor 71 immediately connects the support 2 to the transport motor 22.
7, the conveyance motor 22 rotates normally as shown in FIG. 7J, and the support tool is moved from A to B in FIG. At this time, the arm 30 is in an open state as shown by the chain line by the case cam surface 21a. Note that the position of the support 27 is determined by the output X1 (first
(see FIG. 9c) can be determined by the microprocessor 71 periodically detecting.

In this way, when the support 27 reaches position RO, which is the paddy bag storing position, the magnet 2 of the bracket 29
9a comes into contact with the metal fitting 55 of the paddy bag 7 and attracts only one paddy, and the reversing switches S5 and S6 are activated by further pressure from the bracket 29. When the reversing switches S5 and S6 operate together, the switches S5 and S
6, the pulse signal X2 as shown in FIG.
is output, which causes the microprocessor 71
As shown in FIG. J, the conveyance motor 22 is reversely moved to move the support 27 in the direction from RO to RO. As a result, only one paddy bag 7 is conveyed forward based on the attraction of the magnet 29a, and in the middle of the conveyance, the arm 3
0 is switched to the clamping position by the cam surface 21a,
The paddy bag 7 is reliably conveyed to position C by being attracted by the magnet 29a and pushed by the arm 30. At this time, the other end of the paddy bag 7 is temporarily fixed by a bag stopper 36 made of a flexible body, as shown in FIG. 5, so that the paddy bag 7 is tensioned diagonally.

When it is determined that the support 27 has reached position C based on the signal X1 from the potentiometer S7,
The microprocessor 71 rotates the bag opening device driving motor 41 in the downward direction as shown in FIG. , the surfaces of the magnets 47 of the pair of suction devices 45 are brought into contact with the metal fittings 57 on both sides of the rice bag 7 which is in the stretched state.
Arms 42 and 43 descend, lower limit switch S10
The signal X3 turns ON as shown in Fig. 19f,
and signal X5 from bag opening switch S11, which will be described later.
When the bag stopper solenoid 61 is turned on, the bag stopper solenoid 61 is turned on as shown in FIG.
The engagement with is released. Also, lower limit switch S10
Based on the ON state of the bag open detection switch S11, the microprocessor 71 causes the motor 22 to rotate forward as shown in FIG. to retreat to. When it becomes clear from the output X1 of potentiometer S7 that the support 27 has reached position N,
The microprocessor 71 reverses the bag opening device driving motor 41 and rotates the arms 42, 43 upward until the signal X4 of the upper limit switch S9 changes from the OFF state to the ON state as shown in FIG. 19e. make it move. As a result, the metal fittings 57 sewn on both sides of the paddy bag are attracted to the magnets 47 of the suction device 45, and the empty bag 7 is opened.At the same time, the suction device 45 is moved upward to loosen the hem of the paddy bag 7. removed. When the signal X4 of this upper limit switch S9 turns ON,
As shown in FIG. 19l, the bag stopper solenoid 61 is turned OFF, the bag stopper 36 returns to a state where it can engage with the paddy bag 7 again, and the support 27
In preparation for carrying out the next paddy bag 7.

By the attraction of the metal fitting 57 of the magnet 47, the actuator 51 is moved in and out against the return spring 52, and the four open bag detection switches S11 connected in series shown in FIG. 18 are activated as shown in FIG. 19g. As shown, it turns ON, but if there is a problem in the series of operations up to now, for example, if there is a paddy bag in one row but there are no paddy bags in the other rows, there is a mistake in separating the paddy bags. , a transport error, a paddy bag opening error, etc., the metal fitting 57 of the paddy bag 7 is not suctioned by any of the suction devices 45, so the switch S1
Either one of 1 remains OFF,
From switch S11 to microprocessor 71
Signal X5 in ON state is not input. Then, the microprocessor 71 detects an abnormality in the open state of the rice bag 7, and drives the alarm lamp 72 and alarm buzzer 73 shown in FIG. 18 to notify the operator of the abnormality. Furthermore, if there is no empty bag 7 between both magnets 47 when opening a bag using the suction device 45, the opposing magnets 47 have the same polarity and therefore repel each other.
7 will not attract each other and place an excessive load on the bag opening device driving motor 41, and the arm 4 will be easily moved.
2, 43 can be rotated upward.

Then, the shutter 11 is closed and the closed position detection switch S3 is in the ON state (Fig. 19h), and all the open bag detection switches S11 are in the ON state,
In other words, the two rows of paddy bags have been opened without any trouble (21st row).
In Fig. 21 a), when a small amount of paddy m accumulates in the hopper 5 and the output signal from the paddy sensor S1 turns ON (Fig. 21 b, c), the shutter opening/closing motor 20
However, as shown in Fig. 19m, the automatic shutter 11 is driven until the signal X6 of the open/close position detection switch S2 is turned ON, the auto shutter 11 is lowered, the hopper discharge port 10 is opened, and the paddy m is dumped into the paddy bag 7. (Second
Figure 1 d).

At this time, a predetermined amount of paddy m is thrown into the open paddy bag 7 at once, so that the lower end 7a of the paddy bag 7 is placed on the movable paddy receiving floor 6 as shown in FIG.
Even if the back support arm 70 is located on the left side in the figure, the weight of the paddy m that has been dropped and thrown in will force it to correct itself to the correct paddy input position on the right side of the back support arm 70, and the subsequent input of paddy m will be corrected. , and the full bag can be smoothly transported from the space A by the movable paddy receiving floor 62 (FIG. 21d).

Also, at the same time as paddy supply, auto shutter 11
The paddy bag dispensing device 9 that is interlocked with the paddy bag dispensing device 9 moves upward as shown by the chain line in FIG.
9 and the arm 30 do not interfere with the paddy bag 7,
As shown in FIG. 19j, the conveyance motor 22
The bracket 29 and the arm 30 are rotated in the normal rotation direction, and thereby the bracket 29 and the arm 30 are moved backward to the standby position A. On the other hand, when the paddy bag 7 is opened by the suction device 45, it is in a slightly lifted state, and when the paddy bag 7 becomes heavy due to the supply of paddy to the paddy bag 7, the paddy bag 7 is adsorption device 4
5 (FIG. 21e, and at this time, the switch S11 is in the OFF state as shown in FIG. 19g). Furthermore, even if the paddy bag 7 is removed from the opened state by the suction device 45, since the auto shutter 11 has descended and is located inside the paddy bag 7, filling of paddy can be continued without any problem, and the paddy bag 7 can be opened. It becomes full with the input paddy and overflows to the discharge port 10, turning on the paddy sensor S1 again (FIG. 21f). Then, since the shutter 11 is opened and the open position detection switch S2 is in the ON state as shown in FIG. (Figure 21g).

Simultaneously with the raising of the shutter 11, the feeding device 9 is lowered, and the magnet bracket 29 and arm 30 are returned to the initial standby position.

FIG. 22 shows the transportation of the paddy bag 7 from the storage position B,
The output and driving status of each sensor and motor during the process of opening the bag and adding paddy are shown. In the diagram, “1” indicates the ON state of a switch or motor, etc., and “0”
indicates the OFF state. Furthermore, sample times 1 and 2
...19 is the sample time in Figure 19,
It corresponds to...

In this way, even when the first paddy bag 7 is full of paddy and the shutter 11 is closed, paddy will continue to be put into the hopper 5 and stored. When the filled sensor 75 detects paddy m, the microprocessor 71 drives the alarm lamp 72, alarm buzzer 73, etc. to notify the operator that the hopper 5 is full. Therefore, the operator stops the combine harvester 1 and stops further reaping and threshing. Next, the worker gets off the driver's seat 2 and
Operate the hydraulic operating lever 76 shown in the figure. Then, as shown in FIG. 23e, the floor feeding solenoid valve 77 shown in FIG. 18 is turned on and driven, the hydraulic circuit is switched by the valve 77, and the drive cylinder is activated as shown in FIG. 17. 65 is driven, and the movable paddy receiving floor 62 is moved in the direction of arrow D together with the full paddy bag 7 (FIG. 21i). When the movable paddy receiving floor 62 protrudes in the D direction and moves to the auxiliary paddy receiving floor 64, the bracket 62a comes into contact with the switch 67, and its output signal X7 becomes ON state as shown in FIG. 23b, and the valve 77 The drive of the drive cylinder 6 is stopped as shown in FIG.
5 is also stopped in the B direction, and the floor 62 is also stopped.

In this state, the worker lowers the full paddy bag 7 on the movable paddy receiving floor 62 onto the field, but as the movable paddy receiving floor 62 moves in the D direction, the back support arm 70 rises in the E direction. The paddy bag 7 is reliably moved in the direction D together with the movable paddy receiving floor 62, so that the operator can smoothly take out the paddy bag to the auxiliary paddy receiving floor 64 and release it to the field. In this way, the movable paddy receiving floor 62
When the upper full paddy bag 7 is released to the field, it is placed on the movable paddy receiving floor 62 until then.
The bag detection sensor 6 was detecting the presence of the upper paddy bag 7.
9, the state in which the light 79 from the light emitting part 69a was blocked by the paddy bag 7 changes to the state in which the light 79 reaches the light receiving part 69b, and the output signal X8 of the sensor 69 changes to As shown in figure c,
Changes from OFF state to ON state. In response to this, the microprocessor 71 turns the floor storage solenoid valve 80 from the OFF state to the ON state as shown in FIG. The receiving floor 62 is moved in the direction A from its previously protruding state until the bracket 62b abuts the switch 66. When the bracket 62b comes into contact with the switch 66, the output signal from the switch 62
As shown in FIG.
2 indicates that the paddy has been positioned at a predetermined position suitable for putting the next paddy into a new paddy bag. signal
When X9 turns ON, microprocessor 7
1 stops the driving of the valve 80 and therefore the driving cylinder 65, and stops the movable paddy receiving floor 62 (FIG. 21k).

Note that the movement of the movable paddy receiving floor 62 in the C direction may be performed manually by the operator operating the hydraulic operating lever 76 instead of using the bag detection sensor 69 as in this embodiment. Of course it is possible.

Therefore, the worker presses the start button S12 again, and the microprocessor 71 inputs a new paddy bag 7.
The operator commands the loading of paddy from the hopper 5 into the hopper. Then, the support 27 moves according to the time chart in FIG. 19, and the paddy bag 7 is
The paddy is pulled out from the storage position B on the left side of FIG. Figure 19)
As shown in Fig. 9m, the motor 20 was driven, but from the second time onwards, the paddy sensor S1
As shown in Figure 1, since the paddy in the hopper is constantly detected, the moment when the open bag detection switch S11 is turned on and the paddy bag 7 is set below the discharge port 10. will be opened immediately,
Filling of paddy from the hopper 5 is started. Then, as shown in FIG. 24, the motor 20 is driven, the shutter 11 is opened, and the open position detection switch S is activated.
2 turns on, the microprocessor 71 immediately instructs the timer 82 to start timing for T seconds,
When T seconds have passed and an appropriate amount of rice has been put into the rice bag 7, the motor 20 is driven in the opposite direction to close the shutter 11. (Fig. 21 m, n) When a predetermined amount of paddy has been put into the paddy bag 7 in this way, the worker operates the hydraulic operating lever 76 to move the paddy in the direction of the movable paddy receiving floor 62B, as in the case described above. The paddy bag 7 is taken out together with the bag 7, the full paddy bag 7 is released into the field, and the start button S12 is pressed again to enter the next feeding cycle. After repeating this cycle several times, the paddy in the hopper 5 runs out,
When the paddy sensor S1 changes from the ON state to the OFF state in which no paddy is detected as shown in Fig. 21 p and Fig. 24, regardless of the elapse of time T seconds, as shown in Fig. 21 q , the shutter 11 is immediately closed to complete the closing operation. Therefore,
The operator presses the start button S12 again, returns to the driver's seat 2 after setting a new paddy bag, and resumes operation of the combine harvester 1.

As explained above, according to the present invention, in a state where the paddy sensor S1 detects the presence of paddy m, the shutter 11 is activated when the predetermined time of the timer 82, which is started by the operation of the shutter open position detection means S2, elapses. Since it closes automatically, it is possible to charge a predetermined amount of paddy into the paddy bag 7 many times from the discharge port 10 of the hopper 5, even though it has an extremely simple configuration consisting of a single paddy sensor S1. A large capacity hopper 5 can be used with a small number of discharge ports 10, and work efficiency can be greatly improved. In particular, combine harvester 1 with automatic filling device
When applied to this field, it is possible to significantly improve efficiency by combining the automatic filling device with efficient bagging operations. Furthermore, even if the timer 82 is in the timing state, when the paddy sensor S1 detects the absence of paddy, the shutter 11 is immediately closed, so the operator can easily recognize that the hopper 5 is empty. You can efficiently move on to the next task, such as reaping.

[Brief explanation of the drawing]

Fig. 1 is a side view showing a combine harvester to which the present invention is applied, Fig. 2 is a rear view of its paddy filling section, Fig. 3 is a side sectional view showing the autoshutter of the hopper, and Fig. 4 is its U-U 5 is a plan view of the paddy bag dispensing device, and FIG. 6 is a side view thereof.
Fig. 7 is a side view showing the operation of the paddy bag dispensing device, Fig. 8 is a side view showing the automatic paddy bag opening device, Fig. 9 is a front view thereof, and Fig. 10 is a sectional view showing the suction device. Fig. 11 is a front view of the suction device, Fig. 12 is a side view of the suction device with a balance spring installed, Fig. 13 is a front view thereof, Fig. 14 is a front view of the paddy bag, and Fig. 15 is its side view. A cross-sectional view taken along line X-X, FIG. 16a is a cross-sectional view showing the metal part, b
Figure 17 is a perspective view showing the movable paddy receiving floor part, Figure 18 is a circuit diagram showing the connection state of each sensor, motor, etc. and microprocessor, and Figure 19 is the output of each sensor. A time chart showing the state and driving status of the motor etc., Figure 20 is a sectional view showing the state when paddy is being put into an empty paddy bag,
Fig. 21 is a process diagram showing the procedure for charging paddy from the hopper to the paddy bag, Fig. 22 is a diagram showing the output status of signals from each sensor and motor etc. at each sample time in Fig. 19, and Fig. 23 is FIG. 24 is a time chart showing the control mode of the movable paddy receiving floor, and FIG. 24 is a time chart showing the shutter control device according to the present invention. DESCRIPTION OF SYMBOLS 1... Combine harvester, 3... Rice filling part, 5... Hopper, 7... Rice bag, 9... Rice bag conveyance means (rice bag feeding device), 10... Discharge port, 11... Shutter (auto shutter) 20...Shutter opening/closing drive means (motor), 37...Bag opening means (automatic bag opening device), 82...Timer, S1...Paddy sensor, S12...Open signal transmitting means (start button), S11...Open signal transmitting means (switch for detecting open bag), m...Paddy.

Claims (1)

[Claims] 1. A hopper with a shutter provided at the discharge port of a hopper with a large capacity for rice bags, and by opening the shutter, paddy can be thrown into a rice bag suspended in a space below the hopper. In the shutter control device, a paddy sensor is arranged at the hopper discharge port and detects the presence of paddy; a shutter open position detecting means detects the open position of the shutter; and a predetermined period of time from the operation of the open position detecting means. a timer for starting time measurement; a shutter opening/closing drive means for moving the shutter to an open position or a closed position; and an open signal transmitting means for transmitting an opening signal to the shutter opening/closing drive means, Based on the signal from the open signal transmitting means while detecting the presence of the shutter, the shutter opening/closing drive means is driven in the direction in which the shutter opens, and the timer is activated based on the operation of the shutter closed position detecting means. The shutter opening/closing drive means starts timing, and the shutter opening/closing driving means is based on a signal that the timer has elapsed for a predetermined time while the paddy sensor is detecting the presence of paddy, or a signal that the paddy sensor detects the absence of paddy. Hopper's shutter control device that drives the shutter in the closing direction.