JP6562306B2 - Mobile tank grain discharger - Google Patents

Description

  The present invention relates to a mobile tank for grain, and more particularly, to a mobile tank grain supply device for beans that are easily damaged in the transportation process.

Conventionally, in rice mills, etc., it is put into a substantially sealed mobile tank (also referred to as “container”) that can store about 1 ton of rice grains, and this mobile tank is stored at a predetermined address of the mobile rack with a stacker crane. It is known, for example, in Patent Documents 1 and 2, etc., to transfer to a rice milling process or a sorting process in units of mobile tanks. This makes it possible to perform grain processing that reduces damage to grains and is excellent in dealing with contamination.
This type of cereal mobile tank stores and transports various cereals, especially for beans that are prone to mechanically damaged or cracked grains due to impact during transport by bucket elevators, etc. Then, there is a merit that the above-mentioned damaged particles are hardly generated.

By the way, when the grain is discharged from the mobile tank and supplied to another device or the like, the grain is accelerated from the discharge port at the bottom of the mobile tank through the discharge channel (chute) to the other device. If it falls into other equipment as it is, it causes damage particles. Therefore, it is known to reduce the impact when reaching the other equipment by suppressing the falling speed of the grain by providing a buffer means in the discharge path,
On the other hand, as described above, this type of mobile tank scoops and conveys the leg of the mobile tank with a stacker crane and places it on a discharge station or the like, so that the discharge chute does not hinder the movement of the stacker crane. In general, it is provided so as to be movable up and down as known in Patent Documents 3 and 4.

    The one described in Patent Document 3 is a bellows duct having a built-in buffer body formed so as to be extendable / contractable by an expansion / contraction control mechanism, and the one described in Patent Document 4 is a plurality of cylinders having a buffer body built in continuously. These are telescopic chutes formed by fitting and attaching the body in a plurality of stages, but all of them are complicated in construction and inevitably costly.

JP 2004-249185 A JP-A-4-341426 Japanese Utility Model Publication No. 53-13551 JP 2013-166625 A

  In view of the above-described problems, an object of the present invention is to provide a grain discharging device for a mobile tank in which damaged grains or the like hardly occur when the grain is discharged from the mobile tank to another device.

In order to achieve the above object, a grain discharging apparatus for a mobile tank according to the present invention comprises:
A discharge chute provided at a discharge station for placing a mobile tank, and formed so that its upper end can be moved up and down to join and separate from the discharge portion of the mobile tank,
The discharge chute comprises a fixed chute provided vertically below the discharge portion of the mobile tank, and a sliding chute provided in the fixed chute so as to be movable up and down. A plurality of buffer plates that receive grains discharged from the mobile tank discharge part and sequentially flow downward are provided in a staggered manner, while the sliding chute rises and its upper end is joined to the mobile tank discharge part. An external bent path formed with an inlet for receiving the grain flowing down from the lowermost buffer plate of the plurality of buffer plates and an outlet for returning the received grain toward the discharge portion of the fixed chute, respectively. Is provided to bulge from the fixed chute.

  A sensor for detecting the completion of grain discharge may be provided at the lower end of the discharge chute.

  According to the grain discharging apparatus for a mobile tank of the present invention, the grains discharged from the mobile tank sequentially flow down the multistage buffer plates provided alternately in the sliding chutes of the discharging chute, and further, the bottom buffering By adopting a configuration that extends from the plate to the lower end of the discharge chute via the external curved path of the fixed chute, even if the discharge chute can be moved up and down, the buffer means is provided over substantially the entire length of the discharge chute without adopting a complicated configuration. The provided grain discharging apparatus can be realized at a lower cost than the conventional one.

  In addition, by providing a sensor that detects the completion of grain discharge at the lower end of the discharge chute, it is possible to accurately grasp the timing of lowering the sliding chute and moving the mobile tank. Clogging accidents can be grasped.

The partially broken front view which shows the state which the discharge chute in embodiment of this invention rose and was joined to the mobile tank. The front view which shows the state which the said discharge chute fell.

Embodiments of the present invention will be described.
FIG. 1 shows a state in which the body of the mobile tank 1 for grain, which shows a state in which the discharge chute is raised and joined to the mobile tank, is substantially square in plan view and has a shape with four corners, and its lower part Is the hopper 2, while the upper opening surface is covered with a lid 3. A grain supply port 4 is opened at the center of the lid 3, and the lower end of the hopper 2 is formed at the grain discharge port 5. A shutter 6 that opens and closes the discharge port 5 is attached to a lower end portion of the hopper portion 2 by being urged in a closing direction by a ridge 7. Further, the mobile tank 1 can be self-supported by providing leg portions 8 made of four support members or the like corresponding to the chamfered portions at the four corners of the mobile tank 1.
If necessary, a plurality of engaging members for fixing the lid 3 may be provided on the upper end edge of the trunk portion of the mobile tank 1, and the supply port 4 is pressed by a pressing force from above. An openable opening / closing door may be provided.

  In the mobile tank 1, four column members 9 are erected in a space connecting the supply port 4 and the discharge port 5, and upper end portions of the four column members 9. The beam member 10 is hung on the inner wall surface of the mobile tank 1 in a cross-beam shape so as to support the above. Further, between the four column members 9, reinforcing members 11 are horizontally stretched at equal intervals.

Buffer spaces 12A to 12D are provided alternately in the space formed by the four columnar members 9 assembled in a bowl shape so as to face each other. The lower end of each of the buffer plates 12A to 12D is positioned approximately in the middle of the column member 9, and the grains sequentially flow down from the uppermost buffer plate 12A to the lowermost buffer plate 12D to the bottom of the mobile tank 1. Shaped to fall.
By providing the buffer plates 12A to 12D in the mobile tank 1, when the grains are put into the mobile tank 1, damage to the grains is suppressed by the grains flowing down the buffer plates 12A to 12D sequentially. .

  The grain discharge station 13 on which the mobile tank 1 is placed by a stacker crane (not shown) is provided with a positioning member 14 for accurately placing the leg 8 of the mobile tank 1 on the discharge station 13. Two tank sensors 15 for detecting the presence or absence of the mobile tank 1 are provided at the four corners of the station 13.

  A grain discharge chute 16 is erected below the mobile tank 1 placed on the discharge station 13. The discharge chute 16 is incorporated in the central portion of the internal space of the discharge station 13, and the discharge portion 17 at the lower end of the discharge chute 16 is a sorter, a weighing machine, a blend hopper, etc. that accepts the grains discharged from the mobile tank 1. (Both not shown).

  The discharge chute 16 includes a fixed chute 18 and a sliding chute 19, and the fixed chute 18 is formed in a substantially rectangular tube shape except for the discharge portion 17. The discharge unit 17 is equipped with a grain sensor 20 configured to detect the start / end of discharge, which is a photoelectric sensor. The fixed chute 18 is provided with an inclined external bending path 21 for guiding the flowing grain from the vertical fixed chute 18 to the outside and returning it to the discharge portion 17 of the fixed chute 18 again. It is provided by bulging from the fixed chute 18.

  The sliding chute 19 also has a substantially rectangular tube shape, and is slidably provided in the fixed chute 18. That is, an air cylinder 22 and a guide pipe 23 for raising and lowering the sliding chute 18 are provided on the sliding chute 19 and the fixed chute 18. In the sliding chute 19, a plurality of inclined buffer plates 24A to 24F that receive grains discharged from the mobile tank 1 and sequentially flow downward are provided in a staggered manner. An inclined lower end of the lowermost buffer plate 24F among the plurality of buffer plates 24A to 24F is formed close to the inner wall surface of the fixed chute 18 and is directed downward from the lower end edge of the sliding chute 19. Grains that are inclined and flow down in the sliding chute 19 flow out along the lowermost buffer plate 24F. On the other hand, the other buffer plates 24 </ b> A to 24 </ b> E have inclined lower ends that are approximately half the inner diameter of the sliding chute 19. The buffer plates 24A to 24F are fixed to a pair of opposing wall surfaces of the sliding chute 19, respectively.

The lowermost shock-absorbing plate 24F is formed so that the lower end portion of the inclined cylinder 24F is aligned with the position of the entrance 21a of the external bending path 21 provided by bulging from the fixed chute 18 when the rod of the air cylinder 22 extends. It is. The inclined surface that continues from the entrance 21a of the external bending path 21 has substantially the same inclination as that of the lowermost buffer plate 24F.
Further, a limit switch 26 that operates when the air cylinder 22 extends and the upper end flange 19a of the sliding chute 19 abuts against a collar portion 25 provided around the discharge port 5 of the mobile tank 1. Is provided on the flange 25. The upper end flange 19a has a round hole 19b into which the discharge port 5 of the mobile tank 1 is fitted.

A specific operation in the configuration of the present embodiment will be described below.
When the mobile tank 1 is placed on the discharge station 13 by the stacker crane, the sliding chute 19 of the discharge chute 16 in the discharge station 13 is accommodated in the fixed chute 19 (see FIG. 2), thereby the stacker. The movement of the crane holding the leg 8 of the mobile tank 1 and placing it on the discharge station 13 is not hindered.
When the mobile tank 1 is accurately placed on the discharge station 13 by the positioning member 14, the tank sensor 15 provided on the positioning member detects the presence of the mobile tank 1, and the air cylinder 22 is thereby detected. The sliding chute 19 is raised by extending.

When the discharge port 5 of the mobile tank 1 is inserted into the round hole 19b at the upper end of the sliding chute 19 and the upper end flange 19a comes into contact with the flange 25 provided on the periphery of the discharge port 5 (docking), The limit switch 26 provided in the section 25 is activated, the air cylinder 22 is stopped, and the raising of the sliding chute 19 is also finished. At this time, the inclined lower end of the lowermost buffer plate 24F provided at the bottom of the sliding chute 18 faces the vicinity of the lower end edge of the entrance 21a of the external bending path 21 of the fixed chute 18.

By the operation of the limit switch 26, the shutter 6 of the mobile tank 1 is opened by shutter opening means (not shown), and the grains in the mobile tank 1 are discharged into the sliding chute 19 from the discharge port 5. . The grain flows down in a staggered manner while being sequentially received by the plurality of buffer plates 24A to 24E in order to suppress the generation of damaged grains. Then, the grain that has reached the lowermost buffer plate 24F flows down along the buffer plate 24F, flows into the entrance 21a of the external curved path 21 that bulges from the fixed chute 18, and After flowing down along the inclined surface and returning again into the fixed chute 18 from the outlet 21 b of the external bending path 21, it falls from the discharge portion 17 of the fixed chute 18.
As described above, by providing the external bending path 21 bulging from the fixed chute 18, both the sliding chute 19 and the fixed chute 18 are provided with buffer means, and even if the discharge chute can be moved up and down. The buffering action can be applied over the substantially entire length of the discharge chute 16 with a simple configuration.
In the present embodiment, the external bending path 21 is configured to be folded only once. However, it may have a zigzag shape in which a plurality of bending is performed, and a plurality of buffer plates may be provided in the external bending path. .

When the grain sensor 20 provided in the discharge part 17 of the fixed chute 18 detects the absence of grain, it is determined that grain has been completely discharged from the mobile tank 1, and the shutter 6 and shutter opening of the mobile tank 1 are opened. The engagement with the means is released, and the shutter 6 is closed by the urging force of the ridge 7.
In addition, after the grain sensor 24 detects the grain input, for example, when the absence of the grain is detected in a short time, a grain clogging accident in the discharge chute 16 can be determined.

  As the shutter 6 is closed, the rod of the air cylinder 22 contracts, and the sliding chute 19 is lowered. As a result, the sliding chute 19 is positioned below the discharge station 13 and does not hinder the movement of the stacker crane in and out of the mobile tank 1.

According to the grain discharging apparatus for a mobile tank of the present invention, it is practical because even damaged grains such as beans can be prevented from generating damaged grains as much as possible.

1 Mobile tank
2 Hopper section
3 lid
4 Supply port
5 outlet
6 Shutter 7
8 legs
9 Column members
10 Beam members
11 Reinforcing member
12A Buffer plate 12B Buffer plate 12C Buffer plate 12D Buffer plate 13 Discharge station
14 Positioning member
15 Tank sensor 16 Discharge chute 17 Discharge portion 18 Fixed chute 19 Sliding chute 19a Upper end flange 19b Round hole 20 Grain sensor 21 External bending path 22 Air cylinder 23 Guide pipe 24A Buffer plate 24B Buffer plate 24C Buffer plate 24D Buffer plate
24E Buffer plate 24F Buffer plate
25 Buttocks
26 Limit switch

Claims (2)

A discharge chute provided at a discharge station for placing a mobile tank, and formed so that its upper end can be moved up and down to join and separate from the discharge portion of the mobile tank,
The discharge chute comprises a fixed chute provided vertically below the discharge portion of the mobile tank and a sliding chute provided in the fixed chute so as to be movable up and down. When a plurality of buffer plates that receive grains discharged from the section and flow downward sequentially are provided in a staggered manner, the sliding chute rises and the upper end thereof is joined to the discharge section of the mobile tank. The fixed chute has an external curved path formed with an inlet for receiving grain flowing down from the lowermost buffer plate of the plurality of buffer plates and an outlet for returning the received grain back to the discharge portion of the fixed chute. Grain discharging device for mobile tanks, characterized by bulging from 2. The grain discharging apparatus for a mobile tank according to claim 1, wherein a sensor for detecting completion of grain discharging is provided at the lower end of the fixed chute.

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