JPH11248352A - Inspection control equipment for grain dryers, etc. - Google Patents

Abstract

(57) [Problem] To facilitate inspection by connecting a check means of a controller and determining whether or not there is an abnormality in an output signal by eliminating a switch of a periodic operation means. SOLUTION: In a grain dryer having a control unit for receiving a setting input of various switch groups and a detection information input from each unit detector and outputting a driving command signal or the like to each unit of operation, a driving command from the control unit is provided. Periodic operation means that is driven at a predetermined period in response to the signal, for example, has a delivery valve that is provided at the bottom of the grain downflow path and repeats normal rotation and reverse rotation operation, and this control unit outputs an output signal from the control unit. A checker means for receiving and setting a pseudo operation mode state is provided so as to be connectable, and a drive command signal to the periodic operation means and a periodic operation abnormality detection signal are not output when the checker means is connected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inspection control device for an agricultural machine or the like provided with periodic operation means in addition to a grain dryer.

[0002]

2. Description of the Related Art In a grain dryer, for example, a control program necessary for a drying operation is generally stored, and a setting input of various switch groups and a detection information input from each detector are received. On the other hand, the control unit is configured to output a drive command signal or the like to each operation unit. In order to check whether or not this control unit is normal, a checker is connected with a connector, and this checker has a confirmation determination unit such as a lamp that receives an output command signal of each unit driving motor and displays the state thereof. Then, it is configured such that it is possible to confirm whether or not the command signal is actually output normally to each driving unit.

[0003] By the way, the operation signal output from the control unit is:
For example, it is not always possible to output just by turning on the drying switch. Each unit has an abnormality detection sensor, or a detection unit signal or the like for performing normal operation, which is output to a motor or the like in an organically cooperative manner. Therefore, for example, when a padless signal is output from a sensor that detects a paddy flow abnormality, the motor drive signal is not output, and the above-described determination cannot be made. For this reason, the checker is provided with a changeover switch for inputting a pseudo signal indicating the presence of paddy.

[0004] However, there are cases where this pseudo signal should be frequently switched. For example, when a feed valve for feeding a predetermined amount of grain is formed as a rotating drum that is interlocked with forward and reverse rotation, it must be interlocked with forward and reverse rotation while maintaining a predetermined cycle. Is equipped with a valve sensor to repeat normal rotation and reversal at a predetermined position.However, when checking and checking the above, this repetition signal cannot be separated from the checker position in order to cover the repetition signal by switching on and off. Improvement is required for that reason.

[0005]

SUMMARY OF THE INVENTION The present invention aims at facilitating a prior operation check and inspection of a grain dryer having periodic operation means such as the above-mentioned delivery valve.
The following technical measures were taken: That is, in a grain dryer that constitutes a control unit to output a drive command signal or the like to each operation unit while receiving setting input of various switch groups and detection information input from each unit detector, a drive command signal from the control unit is output. The control unit has a periodic operation means for receiving the output signal from the control unit, and a checker means for setting a pseudo operation mode state is provided so as to be connectable. The inspection control device in the grain dryer or the like is configured not to output the drive command signal and the periodic operation abnormality detection signal to the periodic operation means.

According to a second aspect of the present invention, there is provided a grain control unit which receives a setting input of various switch groups and a detection information input from each unit detector and outputs a drive command signal or the like to each operation unit. The dryer has periodic operation means which is driven at a predetermined cycle in response to a drive command signal from a control unit, and the control unit receives an output signal from the control unit and sets a checker means for setting a pseudo operation mode state. Are provided so as to be connectable, and when the checker means is connected, an inspection control device in a grain dryer or the like is configured to forcibly output a drive command signal to the periodic operation means.

[0007]

Therefore, according to the first aspect of the present invention, the control unit 41 does not output the drive command signal to the periodic operation means and the periodic operation abnormality detection signal by connecting the checker means. This can be ignored, and the checker (operator) can eliminate the trouble such as frequently repeating the switch switching to output a pseudo output signal such as a forward / reverse command, and can perform an inspection check of the control unit 41 and the like.

In the case of claim 2, since the pseudo output signal is forcibly outputted to the periodic operation means by connecting the checker means, the transmission and reception of the signal is displayed on a display lamp or the like. It is convenient to check the driving state.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. 1 is a machine frame of a grain drying machine, in which a storage tank 2, a drying room 3, and a grain collecting room 4 are installed vertically from above,
In the drying chamber 3, grain flow-down passages 9, 9 are formed in a V-shape between a hot air chamber 6 communicating with a burner body 5 having a burner and an exhaust air chamber 8 communicating with an exhaust device 7. In this configuration, the grains flowing down by a predetermined amount are immersed in hot air and dried by the forward / reverse rotation of a delivery valve 10 provided below each of the downflow passages 9, 9.

A grain raising machine 11 is provided outside the machine frame 1 for lifting and returning the grains collected on one side of the grain collecting chamber 4 to a storage tank 2. The grain raising machine 11 has a configuration in which a belt 14 with a bucket 13 is wound between pulleys 12 and 12 inside and below, and a dried grain transferred to one side by a lower transfer spiral 15 provided horizontally below the grain collecting chamber 4. The structure is such that the grains can be scooped and transferred to the upper part. Grains scooped up by the grain raising machine 11 and thrown at the upper portion are guided to the start end side of a transfer gutter 18 provided with an upper transfer spiral 17 through a throw opening 16. In addition, transfer spiral 1
The grains horizontally transferred at 7 are guided by a rotary diffusion plate 19 provided at the upper center of the storage tank 2 and are diffused and dropped into the storage tank 2.

[0011] The grain raising machine 11, upper and lower transfer spiral 1
The grain circulation system composed of 5, 17 and the like is rotated and linked by the machine motor 20 at the lower corner of the machine frame. The lower transfer spiral 15 rotates and interlocks with the drive shaft of the motor 20 via a counter pulley 21. The rotation of the lower transfer spiral 15 rotates the bucket belt 14 of the grain raising machine 11 in conjunction with the rotation of the lower transport spiral 15.
The upper transfer spiral 17 can be linked by an interlock belt (not shown) between the upper pulley 12 and the upper transfer spiral 17.

A supply port (not shown) is provided on the side wall 22 at an appropriate height of the grain raising machine 11 so as to correspond to a position within the left-right space between the forward stroke and the return stroke of the bucket belt 14. A moisture meter 24 is detachably provided at the supply port. The moisture meter 24 has a configuration in which, for example, a sample grain from a supply port is crushed one by one between a pair of electrode rolls, and its resistance value is electrically processed to be converted into a grain moisture value.

On the back side of the machine frame 1, the exhaust device 7 is provided. The exhaust device 7 includes a centrifugal fan 30 that rotates at a high speed, a fan body 31 containing the fan, an exhaust duct 32, and the like, and forms a circular opening 33 on the back of the machine frame 1 so as to be viewed in the exhaust chamber 8. It is. The centrifugal fan 30
A plurality of blades 36, 36,... Are arranged at a predetermined angle around the center of the rotation shaft 35 to constitute a one-sided suction, and the fan body 31 generates a wind with the rotation of the centrifugal fan 30 to remove air from the circular opening 33. It is configured to discharge upward.

The air discharge duct 32 connected to the fan body 31 has an opening which is changed to a horizontal direction, and the two are circularly fitted. In this configuration, the direction can be adjusted in any direction. A pulley 37 is provided at an outer end of the rotating shaft 35, and a second counter pulley 2 provided integrally with the counter pulley 21.
A belt 38 is wound between the pulley 1a and the pulley 37,
It is configured to interlock with the motor 20 of this machine.

FIG. 5 is a control block diagram. The controller 41 of the controller 40 includes
Operation mode switches 43, 44 for drying, discharging and stopping
45, 46, input signals such as setting switches 47, 48, 49 for setting the kind of grain, finishing moisture, and filling amount, and increasing / decreasing switches 50, 51 for setting a drying time.
2. Moisture meter 24, load current detector 5 for motor 20 of this machine
3. Various detection signals from the hot air temperature sensor 54, the outside air temperature sensor 55, the air volume sensor 56, and the like are input. On the other hand, as the output signal, the motor 20 such as the elevator, the valve motor 57
And the like, a circulating system drive and exhaust device 7 drive motor drive signal, a burner drive signal, and the like.

The valve motor 57 is controlled and output so as to intermittently drive forward and reverse. That is, the delivery valve 10 which is notched and opened at a predetermined width in the shape of a cylindrical drum rotates forward to reach a position where the opening is directed downward (this position is detected by the valve detector 52), and immediately reverses 360 degrees. Then, the opening is turned downward again. The control is output to the valve motor 57 in order to execute this movement every predetermined time T. More specifically, when the drying switch 44 is turned on, the motor 20 starts and the valve motor 57 starts normal rotation. When the valve motor 57 reaches the forward rotation limit position, the valve sensor 52 set corresponding to this position is turned on. Valve motor 57
Even while occurs a slight deviation due to the delay T ₁ of the motor stopping time, the valve motor 57 is temporarily stopped. When a predetermined time T has elapsed from the time of the forward rotation command to the valve motor 57, a reverse rotation command signal to the valve motor 57 is output. When the valve sensor 52 is turned on again after the rotation by 360 degrees, a motor stop signal is output, and a slight delay T ₁
(See FIG. 6). Thus, the forward / reverse rotation command of the valve motor 57 is
This is accompanied by the presence / absence of detection. Note that this motor 57
If the forward / reverse interlocking is not performed within a predetermined time, it is determined that there is an abnormality, and the motor and burner related to the grain circulation including the machine motor 20 are stopped and controlled.

A controller 4 incorporating the control unit 41
0 and each part are connected by a connector. That is, the connector 5 for the circulating system motor 20 is used as the connector.
8. In addition to the connector 59 for the valve motor 57 and the connector 60 for the burner, the connector has a connector for inputting a signal from each detector. For example, a connector 61 for a moisture meter, a connector 62 for a valve sensor 52, a connector 64 for a paddy flow detection sensor 63, and the like.

These connectors are used in place of a connector group of a checker 70 prepared separately.
That is, the checkers 70 include the connectors 58 and 5.
9, 60, 61, 62, 64, etc., connected parts 58 ', 59', 60 ', 61', 62 ', 6 on the controller 40 side.
The connectors 58 ″, 59 ″, 6
It has 0 ", 61", 62 ", 64" and can be replaced.

The checker 70 comprises a group of display lamps that are turned on in response to a drive signal, a group of changeover switches for simulating output corresponding to various sensors, and the like. Further, the name of the target sensor and the on / off switching position are displayed on the switch group for outputting the pseudo sensor. When the checker 70 side connector group is connected to the controller 40 and the drying switch 44 of the operation panel 42 is turned on, a motor drive signal is output, and drive signals to the motor 20 and the valve motor 57 are output via the connector group. However, in response to these outputs, the main unit motor display lamp 71 and the burner drive system display lamps 72, 73, 74 such as the burner motor can be turned on. At this time, even if the paddy has not been stuck yet, by outputting the pseudo output signal of the paddy flow sensor 63 by turning on the switch 75, the output of the abnormal signal can be avoided and the normal operation state can be maintained.

A short connector 76 is incorporated in any of the connector groups on the checker 70 side (in the illustrated example, it is integrally formed with a connector 58 ″ corresponding to the motor 20 of the machine). When mounted, the control section 41 executes the inspection execution program based on the following judgment: That is, the control section 41 ignores the presence or absence of the input of the valve sensor 52 and continuously executes the inspection. The motor signal is output.

Reference numeral 77 denotes a valve motor display lamp.
A side hopper 80 opens and closes the side of the machine frame 1, and a side hopper 81 opens and closes the side entrance 80 and serves as a base for putting paddy bags. The grains fed from the side hopper 81 are inserted into the storage tank 2 via the lower transfer spiral 15, the elevator 11 and the upper transfer spiral 17.

The operation of the above example will be described. A predetermined amount of grains is put into the storage tank 2 from the side hopper 81 using the grain raising machine 11. Next, the kind of grain, finish moisture, etc. are set and the drying operation is started. When the drying switch 44 is turned on, a drive signal is output to the burner, the motors 20 and 57. When the motor 20 is driven, the lower transfer spiral 15, the elevator 11, the upper transfer spiral 17, the diffusion board 19, and the exhaust device rotate in conjunction with each other. Therefore, the burner hot air is supplied to the centrifugal fan 3
It circulates through the inside of the machine casing 1 due to the wind generated by zero rotation. The drive valve 57 rotates the delivery valve 10 in the forward and reverse directions, and discharges the grains stored in the valve 10 to the lower transfer spiral 15 and causes the grains in the flow-down passages 9 to flow down. . Therefore, the grains in the storage tank 2 are heated by the hot air while flowing down the drying chamber 3 at predetermined intervals, and reach the grain collecting chamber 4. The grains that have received the hot wind are transferred to one side by the lower transfer spiral 15 and are fried by the grain raising machine 11, taken over by the upper transfer spiral 17, again reach the storage tank 2, and have a refining action for a while. receive. When such a process is repeated and the finish moisture value reaches a preset value, the drying is completed.

Before starting the drying operation as described above, the checker 70 checks the control unit 41. Regular connector groups 58, 59, 60, 61, 62,
64 and the like to be connected 58 ', 59', 60 ', 61', 6
Pull out from the 2 ', 64' side, and replace connectors 58 ", 5
9 ", 60", 61 ", 62", and 64 "are connected. When the expansion switch 43 is turned on after such preparation, the motor 20 of the machine is started, and the display lamp 71 for the motor of the machine is turned on. Here, when the display lamp 71 does not light due to some trouble, it is determined that the control signal to the checker 70 has not been output, and the cause of the control unit 41 is searched.

Next, when the drying switch 44 is turned on, the display lamp 71 for the main unit motor and the display lamps 72, 73 and 74 for the burner are turned on, so that transmission and reception of necessary signals can be confirmed. Here, since the short connector 77 is incorporated by connecting the connector group of the checker 70, the control unit 41 inputs this short signal, stops the drive output to the valve motor 52, and accompanies this rotation drive. No abnormal output is output.

Therefore, since the function of the valve sensor 52 for performing the forward / reverse control while detecting the rotation of the valve motor 57 within a predetermined time can be ignored, the checker (operator) switches to output a forward / reverse command. It is possible to eliminate troublesomeness such as frequent switching, and perform an inspection check of the control unit 41 and the like. In the above-described embodiment, the control unit 41 ignores the drive output and the abnormal input of the valve motor 57 even if the signal of the short connector 76 is received. However, it is more convenient to improve as follows. That is, when the signal of the short connector 76 is received, a forward / reverse rotation signal of a predetermined cycle is forcibly output to the valve motor 57. That is, a predetermined time T ₂ is applied to the valve motor 57.
Out drive output between, and outputs a reverse rotation signal reaching this valve motor 5 starts after the predetermined period T ₂ (FIG. 7). By performing the forced output in this manner, the signal is flashed on the valve motor display lamp 77, and the driving state can be confirmed, which is convenient.

The load current detector 78 of the motor 20
In the configuration in which the overload detection and the phase loss detection are performed, during the check, since the load is always in the no-load state, it is difficult to perform the appropriate overload detection, and the control unit 41 is configured to invalidate these inputs. In order to execute the invalidation processing program by receiving the input signal of the short connector 76, it is not necessary to provide each separate short connector.
Only changing the drying control program will not cause a cost increase.

In the above embodiment, the delivery valve has been described as the periodic operation means. However, the same applies to the burner means which operates intermittently. Further, the present invention can be applied to a checker provided with a periodic operation means in addition to a grain dryer.

[Brief description of the drawings]

FIG. 1 is a front view of an operation panel.

FIG. 2 is a front view of a dryer main body.

FIG. 3 is a front sectional view of a dryer main body.

FIG. 4 is a rear view of the dryer.

FIG. 5 is a control block diagram.

FIG. 6 is a time chart.

FIG. 7 is a time chart.

[Explanation of symbols]

1 ... machine frame, 2 ... storage tank, 3 ... drying room, 4 ... grain collection room,
5: Burner cylinder, 6: Hot air chamber, 7: Exhaust air system, 8: Exhaust air chamber, 9, 9 ... Grain downflow passage, 10 ... Discharge valve, 11 ...
Grain raising machine, 12, 12 ... pulley, 13 ... bucket, 14 ...
Bucket belt, 15: lower transfer spiral, 16: throw opening, 17: upper transfer spiral, 18: transfer gutter, 19: rotating diffuser, 20: motor of the machine, 21: counter pulley, 2
2 ... side wall, 23 ... supply port, 24 ... moisture meter, 25 ... feeding roll, 26, 26 ... electrode roll, 30 ... centrifugal fan, 3
DESCRIPTION OF SYMBOLS 1 ... Fan trunk, 32 ... Exhaust air duct, 33 ... Circular opening, 3
5 ... rotating shaft, 36, 36 ... blade, 37 ... pulley, 38 ...
Belt, 40 ... Controller, 41 ... Control unit, 42 ... Operation panel, 43 ... Stitching switch, 44 ... Drying switch, 45
... Discharge switch, 46 ... Stop switch, 47 ... Grain type setting switch, 48 ... Finish moisture setting switch, 49 ... Polling amount setting switch, 50, 51 ... Increase / decrease switch, 52
... Valve sensor, 53 ... Load current detector, 54 ... Hot air temperature sensor, 55 ... Outside air temperature sensor, 56 ... Air volume sensor,
57 ... valve motor, 58, 58 "... connector, 59,
59 "... connector, 60, 60" ... connector, 62, 6
2 "... connector, 63 ... paddy flow detection sensor, 64, 6
4 ″ connector, 70 checker, 71 indicator lamp,
72, 73, 74 ... indicator lamp, 75 ... switch, 76
... short connector, 77 ... indicator lamp, 80 ... spigot, 81 ... side hopper

Claims (4)

[Claims] 1. A grain dryer in which a control unit is configured to receive a setting input of various switch groups and a detection information input from a detector of each unit while outputting a drive command signal or the like to each unit of operation. The control unit includes a periodic operation unit that is driven at a predetermined period in response to a command signal, and the control unit includes a checker unit that receives an output signal from the control unit and sets a pseudo operation mode state. An inspection control device for a grain dryer or the like, which is configured not to output a drive command signal to the periodic operation means and a periodic operation abnormality detection signal at the time of connection. 2. A grain dryer in which a control section is configured to receive a setting input of various switch groups and a detection information input from each section detector and output a drive command signal or the like to each section of the operation. The control unit includes a periodic operation unit that is driven at a predetermined period in response to a command signal, and the control unit includes a checker unit that receives an output signal from the control unit and sets a pseudo operation mode state. An inspection control device for a grain dryer or the like, which is configured to forcibly output a drive command signal to the periodic operation means at the time of connection. 3. The inspection control device for a grain dryer or the like according to claim 1, wherein the periodic operation means is a delivery valve provided at a lower portion of the grain downflow passage to repeat forward rotation and reverse rotation. 4. The inspection control device in a grain dryer or the like according to claim 1, wherein the periodic operation means is a burner means that repeats on / off at a predetermined cycle.