JP3246982B2 - Stirrer for grain storage tank - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stirrer having a stirrer capable of equally stirring grains stored in a square grain storage tank called a square bottle in a vertical direction. The present invention relates to an apparatus for stirring a stored grain while simultaneously or selectively reciprocating a stirrer in two directions orthogonal to each other in a storage tank.

[0002]

2. Description of the Related Art Grains, especially rice and wheat, are required to be dried to a predetermined moisture level after harvesting, and then stored and stored in order to maintain the quality of taste and the like and to suppress deterioration thereof. Facilities have been proposed and used, and various grain storage tanks have been used. Among them, relatively small-capacity rectangular storage tanks for grain have been conventionally used merely as pre-drying or primary storage tanks.
Recently, in order to be able to also perform main drying and the like in such a relatively small-capacity rectangular grain storage tank, a stirrer capable of uniformly stirring the stored grain in the storage tank has been installed. Has been strongly desired.

In order to meet such a demand, the applicant of the present application has previously proposed a stirrer suitable for the rectangular grain storage tank as described in Japanese Patent Application No. 4-315155. Proposed. This stirrer is configured to reciprocate simultaneously or selectively in two orthogonal directions in a rectangular grain storage tank in a rectangular grain storage tank with a stirrer called an auger (auger screw) capable of equally stirring the stored grain in the vertical direction. Basically, the first bogie is mounted on the first bogie so as to be able to run on the side walls so as to bridge between the left and right side walls of the rectangular storage tank. A second truck mounted in a horizontally movable state, a stirrer vertically inserted into the grain storage tank and rotated while attached to the second truck, and the first truck A first traveling drive mechanism for reciprocating the second bogie in a direction crossing between the front and rear side walls in the grain storage tank, and a second traveling reciprocating the second bogie in a direction crossing between the left and right side walls in the grain storage tank And a driving mechanism, Is automatic operation in humans.

[0004]

In the above-described stirring device, the first traveling drive mechanism for reciprocating the first carriage in the front-rear direction of the storage tank includes, for example, a power source as a power source. Motors, chains for power transmission (bogie towing),
It is provided with a connecting tool (arm, chain, etc.) for connecting the chain and the bogie, etc., which have resistance of stored grains acting on a stirring tool inserted into the storage tank and rotated. The components constituting the first traveling drive mechanism may be damaged due to being added via the second truck and the first truck, for example, cutting of a power transmission belt, a chain, or a connector, or a motor. It cannot be said that burning does not occur.

[0005] When the above-mentioned failure occurs, for example, the truck will fall into the tank, broken parts and oil will fall into the stored grain, and the truck will stop and the stirrer will not move. Therefore, only the grains in the specific location of the grains in the storage tank are stirred, and most other grains are left unstirred for a long time, as a result, the drying of the stored grains does not progress, There is a problem that the quality is significantly reduced.

Further, as in the stirrer described in Japanese Patent Application No. 4-315155, for example, the stirrer is connected to the second bogie and the wheel support portion of the first bogie. Along with the main body of the first truck on which it is mounted, it can swing along the traveling direction of the first truck, and the stirrer is inclined at a predetermined angle or more with respect to the vertical plane. And a tilt detecting means comprising a mercury switch or the like for detecting both that the tilted state has been restored to the posture along the vertical plane, and the stirrer is positioned on the vertical plane based on a signal obtained from the detecting means. When it is detected that the inclination is equal to or more than a predetermined angle, the traveling of the first truck and the second truck is stopped, and then, when it is detected that the stirrer has been restored to the posture along the vertical plane, The first cart and In such as those configured to resume the running of the second carriage, which may cause the following problem.

That is, in the case where malfunction occurs in the tilt detecting means including the mercury switch or the like, particularly, the stirrer is tilted at a predetermined angle or more with respect to the vertical plane, and the tilt detecting means changes from the "ON" state to the "OFF" state. The operation state was switched to the state, and the movement of the bogie was smooth until it was stopped. After that, although the stirrer was restored to the posture along the vertical plane, the inclination detection means was "OFF". If an operation failure occurs that does not return to the "ON" state in the state, the bogie continues to be stopped and the stirrer does not move, as in the case of the failure of the traveling drive mechanism. However, most of the stored grains in the storage tank are left unstirred for a long time, and the quality thereof is significantly reduced.

Here, the above-mentioned trouble of the traveling drive system can be relatively easily dealt with by directly detecting, for example, whether or not the motor is rotating, or whether or not the power transmission chain is broken. Although it can be taken, it is difficult to detect that the first bogie has been stopped for a long time due to the malfunction of the tilt detecting means,
Conventionally, no effective countermeasures have been taken.

In view of the above, the present invention relates to a method in which a first truck and a second truck equipped with a stirrer are orthogonally arranged in a storage tank.
Under the condition that the stored grains are agitated while simultaneously or selectively reciprocating in the direction, even when a failure or malfunction occurs in the inclination detection means in addition to the traveling drive mechanism of the bogie,
It is possible to automatically and reasonably and surely detect it and take alarm measures, such as issuing an alarm, to prevent situations where the stored grains are left unattended for a long time without being stirred. It is an object of the present invention to provide a grain storage tank stirring device which can improve the reliability of the device.

[0010]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, a stirrer for a grain storage tank according to the present invention basically comprises a bridge between left and right side walls of a rectangular grain storage tank. A first carriage mounted on the both side walls so as to be entangled, and a second carriage mounted on the first carriage so as to be laterally movable; A stirrer which is inserted into the grain storage tank and rotated while being attached to the cart, and a first reciprocating means for reciprocating the first cart in a direction crossing between front and rear side walls of the grain storage tank. And a second traveling drive mechanism for reciprocating the second carriage in a direction crossing between the left and right side wall portions, wherein the second carriage is reciprocated by the first traveling drive mechanism. The first truck is set in the first grain storage tank.
If the vehicle does not reach the first detection point or the second detection point set in the grain storage tank separately from the first detection point even if the set time has elapsed after passing through the detection point, a warning such as an alarm is issued. It is characterized by taking measures.

[0011] As a more specific configuration example, at a first detection point of the grain storage tank, there is provided a detection means whose operation state is switched by an operation means attached to the first bogie. An example is provided in which a point at which the first bogie has passed the first detection point is detected based on a signal obtained from the detecting means. It is needless to say that the detection means may be provided on the truck and the operation means may be provided on the storage tank side.

Further, as the operating means and the detecting means, existing ones, for example, those which are installed so as to allow the cart to stand by at a position outside the grain input portion when the grain is input, can be used.

[0013]

In the present invention having the above-described structure, the apparatus for stirring a grain storage tank according to the present invention, when no failure or malfunction occurs in the first traveling drive mechanism or the inclination detecting means, etc.
The time required for the first carriage to pass through the first detection point and return to the first detection point, or
Although the time required to reach the second detection point from the detection point is somewhat different, it should be within a certain time.

Therefore, paying attention to this point, in the stirring device of the present invention, a time longer than the longest one of the required times, for example, a time two to three times the time is stored in the control unit as a set time. Let it be. For example, if the normal required time for the first bogie to return after passing through the first detection point is about 10 to 20 minutes, the set time is set to about 40 to 50 minutes. If the stored grain containing water is left unstirred for about half a day to about one day, its quality starts to be affected, but if it is about 1 to 2 hours, there is no problem.

[0015] For example, when the first cart reaches each detection point set in the grain storage tank, operation means (operating rod, light emitting device, etc.) provided on the first cart causes the storage tank side to be operated. The operation state of the detection means (switches, light receivers, etc.) provided in the device is changed from, for example, “OFF” to “ON”
The state is switched to a state, and a timer provided in the control unit is set based on a signal obtained from the detection means to measure an elapsed time thereafter.

Similarly, when the first bogie reaches the next detection point (including the case where it returns to the same detection point), the operation state of the detection means provided there is switched, and Based on the signal obtained from the detecting means, for example, the previous elapsed time measured by the timer is reset, and the timer is newly set to measure the subsequent elapsed time.

In this case, when the first carriage is traveling normally, in other words, when the first traveling drive mechanism, the inclination detecting mechanism, and the like have not failed or malfunctioned, the first carriage has not been driven.
The time required for the truck to travel between the detection points is shorter than the set time stored in the control unit, so that the normal stirring operation is automatically performed as it is, whereas the first traveling drive mechanism or When a failure or malfunction occurs in the tilt detection mechanism or the like, the first bogie remains stopped for a long time, so after passing one detection point, the elapsed time measured by the timer is longer than the set time. become longer.
Therefore, in the agitating device of the present invention, when the elapsed time exceeds the set time, a trouble countermeasure such as issuing an alarm is taken.
Thereby, the repair work of the faulty part is immediately performed, and the stirring operation of moving the carriage while rotating the stirring tool is started again.

In this way, even if a failure or malfunction occurs in the inclination detecting means as well as in the traveling drive mechanism of the bogie, it is reasonably and surely detected, and the stored grain is not stirred, and is kept long. A situation where the apparatus is left for a long time is prevented, and the reliability of the apparatus is improved.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following, first, the basic structure and operation (substantially the same as in the above-mentioned Japanese Patent Application No. 4-315155) of an embodiment of a grain storage tank stirring device according to the present invention will be described. Next, a description will be given of a countermeasure against a failure or malfunction which is a characteristic part of the present invention.

[Basic Configuration] FIGS. 1 to 12 FIGS. 1 and 2 schematically show a stirrer 1 according to this embodiment.
Reference numeral 00 denotes a rectangular grain storage tank 1 having a square cross section (here, each having a length and width of about 4 m) as shown in FIG.
Installed on top. The grain storage tank 1 has front and rear side walls 2,
3 (partition walls), left and right side walls 4, 5 and a bottom wall 6. The bottom wall portion 6 is provided with a grain outlet 8 and is not shown, for example, by using a fine mesh member. Is formed so that the outlet is directed to the grain outlet 8, and when the grain is discharged, the grain is collected and discharged to the grain outlet 8 by a directional wind current. .

The stirring device 100 includes a pair of wheels 10a.
Has a narrow frame-shaped first carriage 10 attached to both ends. The first cart 10 is a pair of left and right frames 12 in a frame-shaped rail-mounted frame 12 installed on the side walls 4 and 5 so as to bridge between the left and right side walls 4 and 5 of the grain storage tank 1. It is mounted on the rails 14 and 15 so as to be able to run. As can be clearly understood by referring to the front view of FIG. 8, the first carriage 10 has a pair of left and right L-shaped wheel support portions 10f provided with a pair of wheels 10a and 10a at both left and right ends. Rotation shafts 53a, 54a of sprocket wheels 53, 54 to be described later are inserted through bearings 75, 76 so as to penetrate through support walls 10d provided at both ends of the main body 10A. The entire body 10A of the carriage 10 is the rotation shaft 53a,
It is configured to be able to swing along the running direction with the 54a as a pivot.

The first bogie 10 has a pair of front and rear rails 18 and 19 provided on the first bogie 10 so that a second bogie 20 can be run.
A pair of wheels 20a, 20a are provided at both ends as viewed in the running direction of the vehicle, and two augers 23, 2 for stirring the grain in the tank 1 in the vertical direction are provided near both ends thereof.
4 are arranged. The augers 23 and 24 are vertically suspended in the grain storage tank 1 in a natural state, and are mounted on the second bogie 20 while being supported by the bearing 17a of the bearing bracket 17 (FIG. 4). Motors 21 and 22
, And is rotationally driven via belt-pulley type power transmission mechanisms 28 and 29.

In this embodiment, a first traveling drive mechanism 30 for reciprocating the first carriage 10 in a direction crossing between the front and rear side walls 2 and 3 in the grain storage tank 1,
And a second traveling drive mechanism 40 for reciprocating the second carriage 20 in a direction crossing the left and right side walls 4 and 5. The first traveling drive mechanism 30 is a pair of sprocket wheels 31A and 32A arranged on the upper corners of both ends of the left side wall portion 4 of the grain storage tank 1 in the frame 12, and is wound around the sprocket wheels 31A and 32A and rotates in the front-rear direction ( A left-hand winding transmission device 30A comprising an endless annular traveling chain 33 adapted to circulate; a geared motor 36 for driving the winding transmission device 30A via a chain-type power transmission mechanism 49; 12, a pair of sprocket wheels 31B, 32B disposed on the upper corners of both ends of the right side wall portion 4 of the grain storage tank 1 and an endless loop wound around the sprocket wheels 31 to rotate (circulate) in the front-rear direction. Right winding transmission device 30 comprising a traveling chain 34
B, a drive shaft 48 connecting the left and right sprocket wheels 32A-32B, a traveling chain 33,
And first turn arms 45 and 46 connecting the both sides of the first carriage 10 with the first turn arm 45.

The first turn arms 45 and 46 have the same structure, and show the left side (viewed from arrow A in FIG. 1) and the right side (viewed from arrow B in FIG. 1). 5 to 7, an elongate hole 42 is formed near one end, and a pin 44 fixed to the first carriage 10 is loosely inserted into the elongate hole 42, and the other end is Pins 47 are connected to specific positions of the traveling chains 33 and 34 so as to be rotatable relative to each other, and are rotatable around the pins 44, so that they can be guided along the pins 44 and slid along the longitudinal direction. Have been.

The running chains 33, 34 are
The upper half (outward path portion) is supported and guided by a chain guide 73, and idlers 38, 3 rotatably disposed on the wheel support portion 10f of the first bogie 10 described above.
9, a power take-out sprocket wheel 53 and an idler sprocket wheel 54 (both of which will be described later) so that a constant tension can be obtained.

On the other hand, the second traveling drive mechanism 40 includes a first carriage 1 as shown in FIG.
The power take-out arranged so as to penetrate the wheel support portion 10f and the support wall portion 10d on the left end side of the wheel 0, meshes with the left running chain 33, and is rotated according to a relative speed difference therefrom. Sprocket wheel 53 (the rotating shaft 53a (see FIGS. 9 and 10) serves as a support shaft of the main body 10A as described above), and the input shaft 55 and the input shaft 55 to which the sprocket wheel 53 is connected via a joint. A pedestal 10 provided at the left end of the first carriage 10 and having an output shaft 56 to which the torque of the input shaft 55 is transmitted.
c, a sprocket wheel 51 fixed to the output shaft 56, and a sprocket wheel 52, 59 rotatably mounted on a bracket 10e mounted on the first carriage 10. And the sprocket wheels 51, 52, 59 are wound around and rotated in the horizontal direction of the grain storage tank 1 (circulating movement).
And a second winding transmission device 40A comprising an endless annular lateral movement chain 58 adapted to be connected to the second carriage 20 (partition guide plate 67 of the second carriage 20). A second turn arm 65 is connected to a specific portion of the lateral movement chain 58 so as to be relatively rotatable.

The output shaft 56 of the gear box 57
, That is, the position of the sprocket wheel 51 is near the left end of the second bogie 20, while the other sprocket wheel 52 is located at the center of the first bogie 20,
In other words, the grain storage tank 1 is positioned on a vertical section that divides the grain storage tank 1 into two right and left parts. Further, a partition guide plate 67 is provided between the second turn arm 65 and the lateral movement chain 58 in the second carriage 20, and the partition guide plate 67 has a second turn arm 65. An arc-shaped long hole 69 into which a pin 68 protruding is inserted is formed in the vicinity of the center portion of the second turn arm 65, and the long hole 69 supports a connecting portion of the second turn arm 65 on the second bogie 20 side. And serves to regulate vertical swing.

[Structure of tilt detecting means and control system] FIGS.
FIG. 12 In addition to the configuration as described above, the stirring device 100 of this embodiment
In, the tilt detection mechanism 60 is provided on the second carriage 20 mounted on the main body 10A of the first carriage 10. 9 and 10, the tilt detecting mechanism 60 includes a pair of mercury switches 61 fixed by bolts 63a and 63b to a mounting plate 63 bridged in the width direction of the second carriage 20. , 62. Each of the mercury switches 61 and 62 has a low mountain shape whose bottom is concave inward, and has two reservoirs 61A, 61B and 62, respectively.
A, 62B (shown representatively of the mercury switch 62 in FIG. 11).
A and 66B are symmetrically opposed to each other across a vertical plane g passing through the centers of the rotating shafts 53a and 54a of the sprocket wheels 53 and 54 which are the pivots of the main body 10A of the first carriage 10 described above. Are arranged in a state of being slightly inclined with respect to the horizontal plane such that the side of
Reservoir 61A, 62A located on the lower side in A, 66B
Contains 64 mercury. The first electrodes 61a and 62a are provided so as to be in contact with the side portions of the filled mercury 64, and the second electrodes are separated from the first electrodes 61a and 62a so as to be in contact with the bottom surface of the mercury 64. 6
1b and 62b are provided.

When the augers 23 and 24 are in the vertical state, the mercury switches 61 and 62 are mounted so that the reservoir 62A (61A) is slightly lower than the reservoir 62B as shown in FIG. 11A. , So 64 mercury
Is located on the side of the reservoir 62A, and this state corresponds to the entire main body 10A of the first bogie 10 including the containers 66A, 66B, ie, the augers 23, 24 and the second bogie 20 to which the augers 23, 24 are attached. This continues until the tilt (swing) angle θ reaches a predetermined value (for example, 15 °) (FIG. 11B, FIG. 1).
1C). When the inclination angle θ is less than the predetermined value, the mercury 64 contacts both the first electrodes 61a and 62a and the second electrodes 61b and 62b, and the first electrode 61
a, 62a and the second electrodes 61b, 62b are electrically connected (ON) via mercury 64, respectively. On the other hand, as shown in FIG. 11D, when the inclination angle θ is equal to or larger than the predetermined value, the mercury 64 is stored in the reservoir 62A (61).
A) to the reservoir 62B (61B), and the electrode 62a-
62b (61a-61b) is electrically disconnected (OFF)
Is done. FIG. 11 shows the state in which the gap between the electrodes is cut off.
E, as shown in FIGS. 11F and 11A, the operation continues until the main body 10A of the first carriage 10 including the augers 23 and 24 is restored to the vertical state again.

Then, as schematically shown in FIG.
The first electrode 6 of the mercury switches 61 and 62 is supplied to the control unit 50 that supplies power to the truck driving motor 36 and the auger 23 and 24 driving motors 21 and 22.
1a and 62a are connected by wires 69a and 69b, respectively, and the second electrodes 61b and 62b are connected by wires 69c. In this connection mode, in other words, the mercury switches 61 and 62 are arranged in series with the control unit 50 including the power supply.

Therefore, those mercury switches 61,
When both of them are in the ON state, the signal (current) from the control unit 50 is sequentially transmitted to the wiring 69a and the mercury switch 61.
The first electrode 61a, the mercury 64 in the container 66A, the second electrode 61b of the mercury switch 61, the wiring 69c, the second electrode 62b of the mercury switch 62, and the mercury 6 in the container 66B.
4. First electrode 62a of mercury switch 62, wiring 69
b, when at least one of the mercury switches 61 and 62 is in the OFF state, the signal current is cut off.

Here, the mercury switches 61, 62 are mounted on the mounting plate 63 with a slight inclination with respect to the horizontal plane.
The mercury switches 61 and 62 can be appropriately changed by loosening 3b and rotating the containers 66A and 66B, thereby returning the mercury switches 61 and 62 from the ON state to the OFF state and returning from the OFF state to the ON state. The angle can be set arbitrarily. The mercury switch 61 as described above,
(O of the signal obtained from the tilt detection mechanism 60 provided with
Based on N-OFF), the control unit 50 selectively connects and disconnects the power supply to the motor 36 for traveling the truck.

FIG. 13 to FIG. 15 In the stirring apparatus 100 of the present embodiment having the above-described configuration, when the stirring apparatus 100 is set, for example, the first carriage 1
0 to the position closest to the front wall 2 and the second
Trolley 20 is moved to the leftmost end of the first trolley 10,
The shaft attachment portions of the first turn arm 45 and the second turn arm 65 on the side of the chains 33 and 58 are located, for example, near the side ends of the sprocket wheels 32A, 32B and 51, respectively. In this way, the second carriage 2
The initial positions of the augers 23 and 24 arranged at 0 are shown in FIG.
As shown by reference numerals S and S ′ in FIG. 2, it is located in the vicinity of the left corner of the front wall portion 2 and on the longitudinal section that divides the storage tank 1 into two right and left parts.

When the preparation is completed, the motor 36 for running and the motors 21 and 22 for stirring are started. Then, as shown in FIGS. 1 and 4 (A view in FIG. 1), the first winding transmission devices 30A and 30B operate, and the first bogie 10 moves the first turn arms 45 and 46. The chain 3 is pulled by the traveling chains 33 and 34 through the
While traveling (advancing) in the direction crossing between the front and rear side walls 2 and 3 at the same speed as 3, 34, the first bogie 10 is rotated while the augers 23, 24 rotate to perform the work of stirring the stored grains.
And the second carriage 20.

At this time, the first turn arm 45,
Since the connecting portion between the chain 46 and the running chains 33 and 34 is located at the upper half (outward path) of the chains 33 and 34, the sprocket wheel 53 for power take-out is
Since the forward path and the lower half (return path) of the first and second carts 3 and 34 move in opposite directions, the rotation speed obtained by adding the moving speed of the chains 33 and 34 to the forward speed of the first truck 10, that is, the chain 33. , 34 are rotated at twice the moving speed.

When the power take-off sprocket wheel 53 rotates, the torque is transmitted to the second winding transmission device 40 via the gear box 57, and as shown in FIG. The chain is pushed by the upper half (outward path portion) of the lateral movement chain 58 via the second turn arm 65 and travels (transversely moves) at the same speed as the chain 58 so as to cross between the left and right side walls 4 and 5. In this case, the lateral movement speed of the second carriage 20 is considerably slower than the traveling speed of the first carriage 10 because the rotation of the power take-out sprocket wheel 53 is greatly reduced by the gear box 57.

As described above, when the first bogie 10 is pulled by the forward portions of the traveling chains 33 and 34, the trajectories of the augers 23 and 24 disposed on the second bogie 20 are viewed from above. The right and left side walls 4 and 5 have an inclination angle corresponding to the speed ratio between the first truck 10 and the second truck 20 (see FIG. 13). When the first bogie 10 is traveling as described above (both the forward path and the later-described return path), the resistance of the stored grains acts on the augers 23 and 24 in a direction opposite to the traveling direction. According to this resistance, the main body 10A of the first carriage 10 is moved to the position shown in FIG.
As shown in FIG. 10, the traveling direction around the rotating shafts 53 a, 54 a of the sprocket wheel 53 for power take-out and the sprocket wheel 54 which is an idler in a state where the second carriage 20 and the augers 23, 24 are included. In the state where the lower ends of the augers 23 and 24 are swung so as to be delayed and tilted with respect to the vertical plane, and the main body 10A is tilted, the first bogie 10 and the second bogie 2 mounted thereon are tilted.
0 will run.

The main body 10A of the first carriage 10 has a weight (the second body 10A) of the entire body 10A of the first carriage 10.
In addition to the weight of the truck 20 and the augers 23 and 24), since the augers 23 and 24 stir so as to transfer the stored grain from the lower layer to the upper layer, the reaction of the stirring action is caused by the second bogie. 20 through the main body 10
Since a relatively large load is applied vertically downward to A, if the resistance of the stored grain is small, the first bogie 10
Does not tilt so much. Further, since the speed of the lateral movement of the second carriage 20 is reduced as described above, the resistance of the stored grains acting on the augers 23 and 24 is opposite to the lateral movement direction of the second carriage 20. The components that act on are very small and can be ignored.

In addition to the above, in the present embodiment, the inclination angle θ of the augers 23 and 24 (the main body 10A of the second carriage 20 and the first carriage 10) with respect to the vertical plane g is, for example, 1
When the angle is equal to or more than 5 °, one of the mercury switches 61 and 62 is turned off as described above, which is detected by the control unit 50, and the power supply from the control unit 50 to the bogie traveling motor 36 is stopped. The first bogie 10 and the second bogie 20 are stopped for a predetermined period to stop at that position (this point will be described in detail later).

The traveling chains 33, 34 and the first
Turn arms 45, 46 connecting the truck 10
5 and FIG. 6 (FIG. 1).
As seen representatively in the right side view of FIG. 2B), when the sprocket wheels 31A, 31B reach the vicinity of the side end, the pulling force of the chains 33, 34 does not act on the first bogie 10, so the first Is stopped. In this case, even if the first carriage 10 stops, the chains 33, 3
4 are moving, the first turn arms 45, 46
As shown by the dashed line in FIG. 6, the elongated hole 42 is guided by the pin 44 and slides downward while pivoting about the pin 44 as a fulcrum, and then slides upward as shown by a chain line in FIG. Turning, the first carriage 10 is again pulled by the chains 33, 34 via the first turn arms 45, 46 as shown by the solid line in FIG.

As described above, the first turn arms 45 and 46
Only the first carriage 1 is pulled by the chains 33 and 34
During the period when 0 is stopped, the augers 23 and 24 do not leave the position closest to the rear wall 3. Therefore, during the stop period of the first carriage 10, the auger 2
The grains located in the vicinity of the rear side wall 3 of the storage tank 1 are sufficiently agitated in the vertical direction according to the stationary time by the use of 3, 24.

Subsequently, the first turn arms 45 and 46 are turned to the positions shown by solid lines in FIG.
When the bottom of 2 hits the pin 44, the first carriage 10
Chains 33, 34 via turn arms 45, 46 of
Is pulled by the lower half (return section), the traveling direction is reversed, and the vehicle travels toward the front wall 2. At this time, since the moving speed of the chains 33 and 34 and the moving speed of the first bogie 10 are the same, the relative speed difference between the sprocket wheel 53 for power take-out and the chains 33 and 34 becomes zero, and Since the sprocket wheel 53 does not rotate, the second carriage 20 does not move laterally and remains stopped. Thereby, the trajectories of the augers 23 and 24 arranged on the second carriage 20 draw straight lines parallel to the left and right side walls 4 and 5 when viewed from above (see FIG. 13).

When the first carriage 10 reaches the vicinity of the sprocket wheels 32A, 32B on the opposite side, the first turn arms 45, 46 are attached to the first carriage 10, as shown in FIG. Since the pulling force of the intervening chains 33 and 34 does not act, the first carriage 10 stops as in the case described above. Also in this case, the chains 33 and 34 are moving even if the first carriage 10 is stopped, so that the first turn arms 45 and 46
As shown by a dashed line in FIG. 7, the elongated hole 42 is guided by the pin 44 and pivots with the pin 44 as a fulcrum while sliding downward, and then pivots while sliding upward as shown by a dashed line in FIG. 7, the first carriage 10 is again pulled by the chains 33, 34 via the first turn arms 45, 46 as shown by a solid line.

As described above, the first turn arms 45, 46
Only the first carriage 1 is pulled by the chains 33 and 34
During the period during which the vehicle 0 is stopped, the sprocket wheel 53 for power take-off is rotated, so that the second carriage 20 slightly moves laterally, but the augers 23, 24
Never leave the closest location to. Therefore, even in such a case, the augers 23, 2
Due to 4, the grains located in the vicinity of the front wall portion 2 are sufficiently stirred in the vertical direction.

Then, the first carriage 10 and the second carriage 2
0 continuously travels in the same manner as described above, so that the augers 23 and 24 draw a zigzag trajectory in the left-right direction as shown in FIG. In this case, when the connecting portion between the second turn arm 65 and the lateral movement chain 58 reaches the side end of the sprocket wheel 52 arranged in the center of the first bogie 10, the connecting portion becomes the lateral movement chain. Because it will be located in the lower half of 58 (return section)
The state in which the second carriage 20 is pushed via the second turn arm 65 changes to a state in which the second carriage 20 is pulled, and the second carriage 2
The movement direction of 0 is reversed. During this reversal, Auger 2
The reference numerals 3 and 24 are located at positions close to the center of the storage tank 1 and the center of the right side wall portion 5 as indicated by reference numerals e and e 'in FIG. 13, for example, and thereafter as indicated by a dashed line in FIG. In this case, the trajectory moves symmetrically with respect to the trajectory (solid line).

In this embodiment, the auger 2
As shown in FIG. 13, the distances 3 and 24 are brought closer to the distances La and Lb (about 20 cm) with respect to the left and right side walls 4 and 5 and the distance L is also measured with respect to the front and rear side walls 2 and 3.
c, Ld (approximately 20 cm) and stopped there as described above, and the distance during which the first carriage 10 travels in a direction crossing between the front wall portion 2 and the rear wall portion 3. It can be moved left and right by Le and Lf (about 30 cm). Note that such a locus is an example, and the movement pattern of the augers 23 and 24 can be appropriately changed according to the dry state of the stored grain or the like.

In the stirrer 100 of this embodiment having such a configuration, the first carriage 10 is caused to travel.
A part of the power of the motor 36 provided in the traveling drive mechanism 30 of the second traveling drive mechanism 40 for laterally moving the second carriage 20 via a sprocket wheel 53 for taking out power.
Therefore, the first truck 10 and the second truck 20 can be run in directions orthogonal to each other, and the power source can be shared. Therefore, the augers 23 and 24 provided on the second carriage 20 can be moved in the left-right direction while moving the augers 23 and 24 provided in the second cart 20 by the single power source 36, and the grains in the storage tank 1 can be moved. It is possible to stir up and down equally over the entire area.

Since the first traveling drive mechanism 30 stops the first carriage 10 near the front and rear side walls 2 and 3 for a predetermined period, it is difficult to bring the augers 23 and 24 close to each other. The grains located near the inner wall surface of the storage tank 1 can also be sufficiently agitated (for this,
This will be described in more detail later. ) Further, the first traveling drive mechanism 3
0 is composed of the winding transmission devices 30A, 30B and the specific forms of the turn arms 45, 46, so that the first carriage 10 can be used without using control parts such as limit switches.
Can be stopped in the vicinity of the side wall portions 2 and 3 for a predetermined period, and the traveling directions of the two carriages 10 and 20 can be reversed. The configuration is rational, and the cost of the apparatus can be reduced. A similar effect can be obtained by using a connecting tool such as a chain instead of the turn arms 45 and 46 (see Japanese Patent Application No. 5-186207).

As described above, in the stirring device 100 according to the present embodiment, the main body 10 of the first truck 10 moves in the traveling direction with the second truck 20 and the augers 23 and 24. The bearings 17a of the augers 23 and 24 (FIGS. 4 and 8)
Before the excessive load is applied to the first carriage 10 and the like, the first carriage 10 swings in the direction opposite to the traveling direction and is inclined with respect to the vertical plane, so that the bearings 17a and the like and the augers 23 and 24 are provided.
External forces acting on itself are reduced, so that they are less likely to break and the reliability of the device is improved.

The first carriage 10 is stopped at the position closest to the front and rear side walls 2 and 3 as described above. At the time of the stop, the main body 10 of the first carriage 10 is stopped.
A, the second carriage 20 and the auger 23 (24) are shown in FIG.
As shown by the solid line in FIG. However, the first carriage 10 is automatically stopped in a state of being closest to the side wall portion 2 for a predetermined period, and during this stop period, the augers 23 and 24 rotate while their own weight and the reaction of the stirring action cause the augers 23 and 24 to rotate. The stored grain K is swept in the direction indicated by the white arrow P to restore along the vertical line as shown by the dashed line in the figure.

Therefore, as in the above embodiment, the first carriage 1
0 is automatically stopped near the side wall portions 2 and 3 for a predetermined period, the separation distance G between the lower ends of the augers 23 and 24 and the side wall portions 2 and 3 is extremely small. . On the other hand, when the first bogie 10 is caused to immediately run in reverse without stopping, the lower ends of the augers 23 and 24 do not move much, as shown by the two-dot chain line in FIG. Only the arrow moves in the direction indicated by the white arrow Q, and the distance H between the lower ends of the augers 23 and 24 and the side walls 2 and 3 is extremely large.

From this, when the vehicle is stopped near the side wall portions 2 and 3 for a predetermined period as in the above embodiment, the augers 23 and 24 are made shorter than in the case where the vehicle is caused to immediately run in reverse. The whole (particularly the lower end) can be brought closer to the side walls 2 and 3, and the grain K located in the vicinity of the side walls 2 and 3 where drying delay is likely to occur can be surely and sufficiently stirred in the vertical direction. .

In addition, in this embodiment, the auger 2
When the inclination angle θ of the first and second mercury switches 3 and 24 with respect to the vertical plane g exceeds a predetermined value, one of the mercury switches 61 and 62 is turned off.
In the F state, the state is detected by the control unit 50, and the power supply to the motor 36 is stopped until the mercury switch buttons 61 and 62 are both turned ON again, so that the first carriage 10 and the second The carriage 20 is stopped. At this time, as shown by the solid line in FIG.
Even if there is a large gap h between the lower ends of the augers 23 and 24 and the bottom wall portion 6 of the storage tank 1 even if the gaps 3 and 24 are rocked and inclined by the resistance of the storage grain K, the bogie 10
During the stop, the augers 23 and 24 are rotated while the augers 23 and 24 are closest to the side walls 2 and 3, and the reaction is caused by the reaction of the stirring action when the stored grains are re-stacked in the vertical direction. The mercury switches 61 and 62 are automatically returned to the ON state in accordance with the swinging motion of the stored grains so that the stored grains are displaced along the vertical plane. Therefore, the grains near the bottom wall 6 (the lowermost layer), which cannot be reached when the augers 23 and 24 are inclined, can be transferred to the upper layer, and the stored grains can be uniformly stirred.

Here, it is automatically detected by the mercury switches 61 and 62 that the augers 23 and 24 have tilted by a predetermined angle or more with respect to the vertical plane g and have been restored to the vertical state. Stopping and resuming the running of the bogie 10 and the second bogie 20 are automatically performed. In this case, the time required for the augers 23 and 24 to return to the vertical state from the inclined state depends on the properties of the stored grains and the like. It depends on the deposition height and the like. Therefore, the optimal bogie stop period is automatically determined without the need for timer measurement or the like. This means that auger 23,
The time required for the vehicle 24 to be restored to the vertical state from the state where the vehicle 24 is inclined at a predetermined angle or more, that is, the period during which the carts 10 and 20 are to be stopped is separately set in consideration of the properties of the stored grains, the pile height, and the like. This means that it is not necessary, and that setting a separate dolly stop period means that it is extremely difficult at present to accurately grasp the properties and accumulation height of stored grains, etc. In view of this, automatically obtaining the optimum dwell period as described above not only improves the agitation of the stored grains, but also significantly enhances the reliability of the apparatus.

In addition, the mercury switch 6 detects that the augers 23 and 24 are inclined at a predetermined angle or more with respect to the vertical plane.
1, 62 is detected by the tilt detection mechanism 60 having
Since the running stop and the running restart of the carts 10 and 20 are automatically performed, the unstirred amount of the lower grain can be reduced as described above, and irregular running or derailing caused by excessive swinging of the carts 10 and 20 can be achieved. And the like, and the tilt detection mechanism 60 including the mercury switches 61 and 62 and the control unit 50 also function as a safety device.

Note that the inclination angles θ and O at which one of the mercury switches 61 and 62 changes from the ON state to the OFF state.
The value of the angle from the FF state to the ON state, that is, the allowable maximum swing angle of the augers 23 and 24, the dwell time of the carts 10 and 20, and the like are arbitrarily set by adjusting the mounting angles of the mercury switches 61 and 62. Accordingly, the augers 23 and 24 can be moved between the side walls 2 and 3 at a speed according to the properties of the stored grain and the pile height without changing the speed of the bogie traveling motor 36. And the same effect as in the case where the traveling speed of the carriage 10 is made variable can be obtained.

[Countermeasures for Failures and Malfunctions of Traveling Drive System, etc.] FIGS. 2, 8, 12, 16 to 18 The stirring apparatus of the present embodiment is provided under the condition that the stirring operation is automatically performed as described above. In order to prevent a situation in which the first traveling drive mechanism 30 and the inclination detecting mechanism 60 fail or operate improperly and the first bogie 10 remains stopped for a long time, the first bogie 10 is used at the time of feeding the grain. Using the detection means provided to make the first carriage 10 stand by at a position off the grain input site, it is determined whether the first bogie 10 is in a normal running state or has been stopped for a long time to take a countermeasure for failure. This will be described in detail below.

That is, in the above-mentioned storage tank 1, as shown by a dashed line in FIG. 2, the center of the tank is a grain input site T, and the grain input site T is shown from above the tank 1. The grain is fed by a feeding means such as a packet conveyor. And
The upper part of the one side wall part 4 of the storage tank 1 is detected at a part located between the front and rear ends of the grain input part T and the front and rear side wall parts 2 and 3 when viewed in the front and rear direction of the storage tank 1. Fixed position stop switch (limit switch) 81 as a means,
An operation rod 83 as operation means is suspended from the wheel supporting portion 10f on the side wall portion 4 side of the first carriage 10 (see also FIG. 8). , 82 are adapted to be swung by the operating rod 83 when the operating rod 83 passes therethrough together with the first carriage 10. That is, as shown in FIG. 16, the operation rod 83 is moved together with the first bogie 10 to the fixed position stop switch 8.
When the operating ends 81a and 82a hit the operating ends 81a and 82a, the operating ends 81a and 82a are switched from a solid line position (neutral position = OFF state) to a position (ON state) indicated by a one-dot chain line or a two-dot chain line in the figure. Thereafter, when the operating rod 83 is separated, the operating ends 81a and 82a return to the neutral position.

Accordingly, as shown by the solid and dashed lines in FIG. 2, the operation rod 83 hits the operation ends 81a, 82a of the fixed position stop switches 81, 82 to swing the first carriage 10 as shown in FIG. , Grain input site T
When the vehicle has traveled to a position near the front and rear ends of the vehicle, a detection signal is issued from the fixed position stop switches 81 and 82 and supplied to the control unit 50 shown in FIG.

The control unit 50 has an input mode switch 90 which is pressed when additional grains are to be input.
And a timer is built-in, and the control unit 50 controls the motors 21 and 22 for stirring based on the operation state of the input mode switch 90 and the detection signals from the fixed position stop switches 81 and 82. The output control to the truck running motor 36 and the output control of the alarm device such as the buzzer 94 are performed according to a program as shown in the flowchart of FIG.

In other words, when grains are already introduced into the storage tank 1 and grains are additionally introduced when the augers 23 and 24 are performing the stirring operation, the control unit 5
The input mode switch 90 attached to 0 is pressed. At this time, the grain has not been added yet, and the first truck 10 and the second truck 20 are continuously moved and moved, and the augers 23 and 24 are also rotated.

When the operating rod 83 provided on the first carriage 10 hits one of the fixed position stop switches 81, 82, the operating rod 81a or 82a, and comes to a position where the operating rod 81 swings, the fixed position is stopped. Stop switch 81
Or, 82 switches its operation state from the OFF state to the ON state, and then a detection signal is issued to the control unit 50. Upon receiving this detection signal, the control unit 50
Motors 21 and 22 for driving augers 23 and 24, first
The power supply to the motor 36 for running the truck 10 and the second truck is stopped to stop the rotation of the augers 23 and 24 and the traveling of the first truck 10 and the second truck 20 (FIG. Step 2 of the flowchart of 18
01-206).

After the augers 23, 24, the first carriage 10 and the second carriage 20 have been stopped in this way, the transfer charging means such as a packet conveyor is operated, and the grain charging section of the storage tank 1 is operated. Additional grain is added to T in the required amount. At the time of this additional loading, the first bogie 10 is stopped near the front and rear ends of the grain loading site T as viewed in the front and rear direction of the storage tank 1 as shown by a solid line or a dashed line in FIG. It is avoided that the grain hits the stirring device 100 at the time of feeding.

On the other hand, except when the above-mentioned grain is thrown, the first bogie 10 is controlled by using a detection signal from one of the fixed position stop switches 81 and 82 (here, the fixed position stop switch 81). It is determined whether the vehicle is in a normal running state or has been stopped for a long time to take measures against the failure (steps 207 to 21 in the flowchart of FIG. 18).
1). That is, when no failure or malfunction occurs in the first traveling drive mechanism 30, the inclination detection mechanism 60, or the like, after the first bogie 10 passes the fixed position stop switch 81 that is the detection point, The time required to return there should vary within a certain amount of time, though it may vary slightly.

Therefore, paying attention to this point, in this example, a time longer than the longest one of the required times, for example, a time two to three times as long as that time (here, 40 to 50 minutes) is set as the set time. It is stored in the built-in memory of the control unit 50 as Tx. Under these circumstances, when the operating rod 83 of the first truck 10 reaches the detection point (the position of the fixed position stop switch 81), the operating rod 83 provided on the first cart 10 as described above fixes the home position. Stop switch 8
The operation state of No. 1 is switched from the OFF state to the ON state (step 207), and a detection signal from the operation state is supplied to the control unit 50. Thereby, the control unit 50
Sets the timer provided for it (step 2
08), and measure the elapsed time T thereafter (step 20).
9).

When the first bogie 10 returns to the detection position where the fixed position stop switch 81 is located, the previous elapsed time T measured by the timer is reset (T ← 0). At the same time, the timer is newly set (step 208), and the elapsed time T thereafter is measured (step 209). In this case, the first carriage 1
When the vehicle 1 is traveling normally, in other words, when no failure or malfunction occurs in the first traveling drive mechanism 30 or the inclination detection mechanism 60 or the like, the first carriage 10 is moved to the position of the fixed position stop switch 81. Since the time (elapsed time T) required from leaving the part to be returned to returning is shorter than the set time Tx stored in the control unit 50 (T ≦ Tx), the normal stirring operation is automatically performed as it is. (Step 2
10, 202, 203, 207, 209). On the other hand, when a failure or malfunction occurs in the first traveling drive mechanism 30, the inclination detection mechanism 60, or the like, the first bogie 10 remains stopped for a long time, and the elapsed time T measured by the timer is used. Is longer than the set time Tx (T> T
x)

As described above, when the elapsed time T exceeds the set time Tx, in this example, the process proceeds from step 210 to steps 211 and 206 to sound the alarm buzzer 94 installed in the control room or the like, and to turn on the warning lamp 92. Alarms, etc., and all motors 2
Stop 1,22,36. As a result, the repair work of the faulty part is immediately performed, and the stirring work for moving the carriages 10, 20 while rotating the augers 23, 24 again is started.

By doing so, even if a failure or malfunction occurs not only in the traveling drive mechanism 30 of the first bogie 10 but also in the inclination detection mechanism 60, it is reasonably and reliably detected and the storage is performed. It is possible to prevent a situation where the grain is left unattended for a long time without stirring, and the reliability of the apparatus is improved. In the above-described embodiment, the fixed position stop switches 81 and 82 are disposed between the front and rear ends of the grain input site T and the side walls 4 and 5, respectively, when viewed in the front and rear direction of the storage tank 1. It is not necessary to arrange it in two places,
It may be arranged at only one location, for example, near the side wall 4. Also, fixed position stop switches 81 and 82 are provided for troubleshooting.
Is used, but both may be used. In this case, the elapsed time T is measured each time the operation state of each of the switches 81 and 82 switches, and the elapsed time T is measured. In the same manner as described above, it may be determined whether the first carriage 10 is traveling normally or has been stopped for a long time.

Further, in the above embodiment, the operating rod 83 and the limit switches 81 and 8 serve as operating means and detecting means.
In addition, as shown in FIG. 17, for example, as shown in FIG. 17, a light emitting device 85 is attached to the first carriage 10 via a bracket 84 and a light receiving device 87 is attached to the side wall portion 4 as operating means and detecting means. And may be used by attaching to them.

In the above-described embodiment, the chain drive type is exemplified. However, the stirring device is not limited to this. For example, a cylindrical frame type stirrer proposed by the present applicant has been proposed. (Japanese Patent Application No. 5-22806)
And the first truck and the second truck are individually driven by motors (for example, Japanese Patent Application No. 4-2280).
No. 5) can be used. In the above-described embodiment, the auger is provided with two augers. However, one auger may be used depending on the size of the storage tank, and can be arbitrarily selected.

[0071]

As will be understood from the above description, the grain storage stirrer according to the present invention has a first bogie and a second bogie equipped with a stirrer which are orthogonal to each other in the storage tank. When the stored grain is agitated while reciprocating simultaneously or selectively in two directions, if a failure or malfunction occurs in the traveling drive mechanism or the inclination detection means of the bogie, it is rational and reliable. Can automatically take countermeasures such as detecting a warning and issuing an alarm, which can lead to a situation where the stored grains are left unattended for a long time without being agitated, in other words, the quality of the stored grains may deteriorate. An excellent effect that the situation can be reduced as much as possible and the reliability of the device can be improved can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment of an apparatus for stirring a grain storage tank according to the present invention.

FIG. 2 is a plan view of a stirring device for a grain storage tank according to an embodiment.

FIG. 3 is a perspective view showing a grain storage tank in which the stirring device of the embodiment is installed.

FIG. 4 is a left side view of the stirrer according to the embodiment (as viewed from the direction indicated by the arrow A in FIG. 1).

FIG. 5 is a partial right side view (viewed in the direction of arrow B in FIG. 1) used for explaining the operation of the embodiment.

FIG. 6 is a partial right side view (viewed in the direction of arrow B in FIG. 1) used for explaining the operation of the embodiment.

FIG. 7 is a partial right side view (an arrow B in FIG. 1) used for explaining the operation of the embodiment.

FIG. 8 is a front view for explaining the configuration and operation of the stirring device of the embodiment.

FIG. 9 is a diagram which is used for describing a configuration of a tilt detection unit according to the embodiment.

FIG. 10 is a diagram which is used for describing the operation of the inclination detecting means of the embodiment.

FIG. 11 is a diagram which is used for describing the operation of the mercury switch of the inclination detecting means shown in FIG.

FIG. 12 is a diagram schematically showing a control system according to the embodiment.

FIG. 13 is a diagram illustrating an example of an auger movement pattern according to the embodiment.

FIG. 14 is a diagram which is used for describing the operation of the auger when the bogie is near the side wall in the embodiment.

FIG. 15 is a diagram which is used for describing the operation of the auger when the bogie is stopped between the side wall portions in the embodiment.

FIG. 16 is a diagram provided for explanation of operation means (operation rod) and detection means (fixed position stop switch) of the embodiment.

FIG. 17 is a diagram provided for explaining another example (a light emitting device and a light receiving device) of the operation means and the detection means.

FIG. 18 is a flowchart showing a control program for charging a grain and taking measures against breakdown and malfunction in the embodiment.

[Explanation of symbols]

 1- Grain storage tank 2, 3- Front and rear side wall parts 4, 5- Left and right side wall parts 10- First bogie 20- Second bogie 23, 24-Auger 30- First traveling drive mechanism 36- Geared Motor 40-second traveling drive mechanism 50-control unit 60-inclination detection mechanism 81, 82-fixed position stop switch 83-operation rod 90-closing mode switch 92-warning lamp 94-warning buzzer 100-stirring device

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-64-84888 (JP, A) JP-A-60-13939 (JP, U) JP-B-59-9127 (JP, B2) JP-B-60- 28203 (JP, Y2) (58) Fields investigated (Int. Cl. ⁷ , DB name) A01F 25/00-25/14 B01F 13/00 F26B 9/06 F26B 25/04

Claims (2)

(57) [Claims] 1. A first truck mounted on a rectangular grain storage tank so as to run on both side walls so as to bridge between left and right side walls, and the first truck. A second carriage mounted so as to be able to move laterally, a stirrer inserted into the grain storage tank and rotated while attached to the second carriage, and the first carriage. A first traveling drive mechanism for reciprocating in a direction crossing between front and rear side walls in the grain storage tank, and a second traveling drive for reciprocating the second bogie in a direction crossing between the left and right side walls. And a mechanism is provided. After the first bogie reciprocated by the first traveling drive mechanism has passed a first detection point set in the grain storage tank, a predetermined time or more has passed. Is also set in the first detection point or separately in the grain storage tank. When not reaching the second detection point, formed by the failure take measures, such as issuing an alarm, stirrer of cereal reservoir. 2. A first detection point of the grain storage tank,
Detecting means whose operating state is switched by operating means attached to the first bogie is provided, and the first bogie is driven by the first bogie based on a signal obtained from the detecting means.
The agitation device for a grain storage tank according to claim 1, wherein the time point when the vehicle passes the detection point is detected.