JP2006273205A - Small granule conveying vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a small granule conveying vehicle capable of conveying pellets of gas hydrate or the like, charging pellets or the like irrespective of the height position of a charging port of a storage tank, and efficiently discharging pellets or the like from an accommodation tank. <P>SOLUTION: Pellets 21 of gas hydrate are stored in an accommodation tank 1 on a chassis, and conveyed in a cooling mode. When a charging port 20 of a storage tank 19 is low in position, the accommodation tank 1 is inclined backwardly by an inclination device 13, pellets are charged into the storage tank 19 from a first discharge port 3 in a rear face of the storage tank 1. When the charging port 20 is high in position, pellets are charged into the storage tank 19 from a second discharge port 9 by a vertical conveyor 16 adjacent to the width direction of the first discharge port 3 and a discharge conveyor 17. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a small particle transport vehicle for transporting small particles obtained by molding gas hydrate into pellets and other small particles.

  2. Description of the Related Art Conventionally, as a transport vehicle for transporting powder particles and small particles such as grain and livestock feed, as shown in FIG. 8, a vehicle in which a storage tank 1 is arranged on a truck chassis 11 is known. A floor screw conveyor (hereinafter referred to as a floor conveyor) 15 is disposed on the inner bottom surface of the storage tank 1, and a vertical screw conveyor (hereinafter referred to as a vertical conveyor) 16 is attached to the rear end of the storage tank 1. A discharge screw conveyor (hereinafter referred to as “discharge conveyor”) 17 is rotatably connected to the tip of the conveyor 16.

  The method of using this transport vehicle is as follows. First, the small particles 21 and the like are loaded into the storage tank 1 on the chassis 11 and transported to a destination where the storage tank 19 is located, and then the conveyor discharge port 18 of the discharge conveyor 17 is aligned with the input port 20 of the storage tank 19. Then, the floor conveyor 15 is operated, the small particles 21 in the storage tank 1 are transferred to the vertical conveyor 16 on the rear surface of the storage tank 1, and then the vertical conveyor 16 is operated, so that the small particles 21 are placed at one end of the discharge conveyor 17. Transport. Further, the discharge conveyor 17 is operated, and the small particles 21 are discharged from the conveyor discharge port 18 and put into the storage tank 19.

  In general, the storage tanks 19 such as the small particles 21 are erected on the ground like a silo and have a loading port 20 at a high position, so that the transport vehicle has such a structure. However, in this structure, the discharge conveyor 17 cannot be used effectively when the inlet 20 of the storage tank 19 is at a low position. Even if the storage tank 19 has an inlet 20 at a high position, it is necessary to operate the floor conveyor 15, the vertical conveyor 16, and the discharge conveyor 17 in order to transfer the small particles 21 in the storage tank 1. Consumption was high and the transfer speed could not be increased so much that the small particles could not be efficiently transferred and discharged.

  Further, as another granular material transport vehicle, one having a simple structure, light weight, and excellent cost is proposed (see Patent Document 1). This granular material transport vehicle has a storage tank on the chassis, and this storage tank has a discharge port at the lower end of the rear end, and is rotatably supported by a dump hinge at the rear of the chassis. A bellows-like airbag that can be expanded and contracted by air is provided between the upper surface of the chassis and the lower surface of the storage tank, and when the air is injected into the airbag and extends, the storage tank is inclined obliquely, and the air is discharged from the airbag. When it is pulled out and contracted, the storage tank returns to its original level.

  Therefore, when the storage tank input port is at a low position, the storage tank outlet is aligned with the storage tank input port, and the storage tank is simply tilted. Can be put into storage tank. In addition, since air is used to tilt the storage tank, a mechanical or hydraulic tilting device is not required, and the compressor can be shared with other air mechanisms such as brakes, making the structure simple and lightweight. It is what.

However, this proposal has a problem that when the storage tank has a high inlet, the granular material in the transported storage tank cannot be directly input to the storage tank.
JP-A-8-244521

  The present invention has been made to solve the above-mentioned problems of the prior art. That is, small particles formed from pellets of gas hydrate and other small particles can be transported to the destination where the storage tank is located, and the transported small particles can be charged regardless of the height position of the inlet of the storage tank. An object of the present invention is to provide a small particle transport vehicle capable of efficiently discharging small particles from a storage tank.

  The small particle transport vehicle according to claim 1 is a small particle transport vehicle that stores and transports the small particles in a storage tank provided on a chassis, and is a dump hinge that rotatably supports the rear lower side of the storage tank. A first discharge port provided on the rear surface of the storage tank, an opening / closing lid that opens and closes the first discharge port, and is connected to the first discharge port in the width direction. A vertical screw conveyor for transferring the accommodated small particles to an end portion, one end portion of the vertical screw conveyor being rotatably connected to the other end portion of the vertical screw conveyor, and a second discharge port at the other end portion; A discharge screw conveyor for transferring the accommodated small particles transferred by the conveyor from the one end to the other end and discharging from the second discharge port; and It is characterized in that a tilting device for tilting the.

  Here, the small particles include fine particles, that is, powder particles.

  The small particle transport vehicle according to claim 2 is the small particle transport vehicle according to claim 1, wherein the small particles are gas hydrate pellets, and a refrigerator for cooling the inside of the storage tank is provided. The gas hydrate pellet is obtained by granulating a gas hydrate using methane gas or the like as a guest gas, and is, for example, a spherical or non-spherical body having an outer diameter of about 1 mm to 100 mm.

  A small particle transport vehicle according to a third aspect of the present invention is the small particle transport vehicle according to the first or second aspect, wherein a partition for isolating the inside of the storage tank into a plurality of storage portions is provided.

  A small particle transport vehicle according to a fourth aspect of the present invention is the small particle transport vehicle according to any one of the first to third aspects, wherein an anti-adhesion device for eliminating the fixation of the small particles in the storage tank is provided. .

  The small particle transport vehicle according to claim 1 is configured such that the lower rear portion of the storage tank is rotatably supported by a dump hinge, the storage tank is tilted rearward by a tilting device with the dump hinge as a rotation shaft, Since the rear opening has an outlet and an opening / closing lid that opens and closes the outlet, if the storage tank inlet is in a low position, the storage tank is tilted and the opening / closing lid is opened to accommodate from the rear outlet. Small particles in the tank can be put into the storage tank by gravity.

  Since the vertical conveyor is connected to the discharge port in the width direction, the vertical conveyor does not interfere with the discharge of the small particles from the discharge port, and smooth discharge is possible.

  In addition, since the discharge conveyor is rotatably connected to the vertical conveyor, the small particles in the storage tank can be put into the storage tank with these conveyors when the storage tank has a high inlet. And even if the number of small particles in the storage tank decreases, the storage tank can be tilted later and the rear opening / closing lid is closed to collect the small particles at the rear end of the storage tank. Can be discharged without leaving small particles.

  That is, small particles or other small particles formed from gas hydrate into pellets can be transported to the destination where the storage tank is located, and can be charged regardless of the height of the storage tank inlet, and more efficiently from the storage tank. Small particles can be discharged.

  The small particle transport vehicle according to claim 2 is provided with a refrigerator for cooling the inside of the storage tank, and the small particles are made into pellets of gas hydrate. Therefore, the pellet of the gas hydrate in the storage tank can be set to minus 20 ° C. or less with the refrigerator. As a further effect, the self-preserving effect of gas hydrate can prevent the stored gas from being released even under normal pressure, thereby improving the handling of the pellets.

  In addition, gas hydrate storage tanks may be either standing on the ground or buried underground so as to be advantageous in terms of cost, etc. in order to maintain the inside at a predetermined pressure and temperature. Regardless of the height position of the tank inlet, the small particle transport vehicle of the present invention that can input the contained gas hydrate pellets is suitable.

  The small particle transport vehicle according to claim 3 is provided with a partition that separates the inside of the storage tank into a plurality of storage units. As a further effect, even when a small amount of small particles are stored in the storage tank, the small particles do not shake greatly in the storage tank during transportation, and the center of gravity of the transport vehicle is reduced and safety is increased. . In addition, small particles of different types and sizes can be accommodated for each isolated accommodating portion.

  According to a fourth aspect of the present invention, there is provided a small particle transport vehicle provided with a sticking prevention device that eliminates the sticking of the small particles in the storage tank. Thereby, when the small particle accommodated in the accommodation tank adheres as a further effect, adhesion can be eliminated. In particular, when the small particles are gas hydrate pellets, the pellets may stick to each other, and even if they stick to form a large lump, smooth discharge from the storage tank can be ensured by eliminating the sticking. .

Hereinafter, a first embodiment of a small particle transport vehicle according to the present invention will be described. As shown in FIGS. 1 and 2, a storage tank 1 for storing small particles 21 is installed on a chassis 11 of this transport vehicle. Dump hinges 12 are provided on both sides of the rear side of the rear portion of the storage tank 1. A tilting device 13 is provided between the chassis 11 and the bottom surface of the storage tank 1 to tilt the storage tank 1 backward with the dump hinge 12 as a rotation axis, as shown by a two-dot chain line in FIG.
A loading port 2 for loading small particles 21 into the storage tank 1 is provided on the upper surface of the storage tank 1, and a first discharge for discharging the small particles 21 in the storage tank 1 at the center in the width direction at the bottom of the rear surface. An opening / closing lid 3 a for opening and closing the outlet 3 and the first discharge port 3 is provided. A vertical conveyor 16 is attached to the first discharge port 3 in the width direction, and a discharge conveyor 17 is attached to the vertical conveyor 16 in a connected manner.

  The first discharge port 3 and one end of the vertical conveyor 16 pass through the inside through the connecting path 8 as shown in FIGS. 6 and 7, and the first small particles 21 stored in the storage tank 1 are selected. It has a structure that can be sent out to either the discharge port 3 or the vertical conveyor 16. One end of a discharge conveyor 17 is connected to the other end of the vertical conveyor 16 so as to be rotatable in the vertical direction. A second discharge port 9 for discharging the small particles 21 in the storage tank 1 is provided at the other end of the discharge conveyor 17.

  In this embodiment, since the small particles 21 are pellets using methane gas (natural gas) as a guest gas, the inside of the storage tank 1 is cooled, and the outer wall of the storage tank 1 is insulated to form a gas hydrate in the storage tank 1. The pellet is kept at about minus 20 ° C.

  In the case of methane gas hydrate, gas molecules in water molecules are hardly released even under normal pressure at temperatures below -20 ° C. Therefore, when transported and stored under these conditions, the storage tank 1 is expensive and heavy pressure vessel In addition, it is possible to handle the pellets under normal pressure to improve workability. Therefore, the storage tank 1 is made of a heat insulating structure in which a heat insulating material 7 is sandwiched between steel plate walls, and a refrigerator 14 is provided under the chassis 11 to cool the inside of the storage tank 1, and the pellet is maintained at minus 20 ° C. or lower. Control to do.

  As the heat insulating material 7, general hard foamed polyurethane or the like can be used. Of course, if the small particles 21 do not need to be cooled, the storage tank 1 does not have to be provided with the refrigerator 14 as a normal wall structure made of a steel plate or other alloys.

  Next, a method of using the first embodiment will be described with reference to FIGS. When loading the small particles 21 into the storage tank 1, the loading port 2 on the upper surface of the storage tank 1 is opened to load the small particles 21. After the loading is completed, the transport vehicle goes to the destination and the storage tank 19 at the destination stores the storage tank 19. The small particle body 21 in 1 is thrown in.

  First, the case where the storage tank 19 is erected on the ground based on FIG. 3 and the input port 20 of the storage tank 19 is higher than the first discharge port 3 of the storage tank 1 as in a silo, for example, will be described.

  First, the tilting device 13 is operated with the open / close lid 3a of the first discharge port 3 of the storage tank 1 closed to tilt the storage tank 1 later. Then, the direction of the discharge conveyor 17 is changed, the 2nd discharge port 9 is match | combined with the insertion port 20 of the storage tank 19, and the vertical conveyor 16 and the discharge conveyor 17 are operated. The small particles 21 in the storage tank 1 are transferred from the rear end of the storage tank 1 to the discharge conveyor 17 by the vertical conveyor 16 through the connection path 8, and further transferred by the discharge conveyor 17 and discharged from the second discharge port 9. The storage tank 19 is supplied from the inlet 20 of the storage tank 19.

  In this embodiment, the discharge conveyor 17 is connected to the other end of the vertical conveyor 16 so as to be capable of vertical rotation, but can also be connected so as to be capable of horizontal rotation.

  Even if the small particles 21 are put into the storage tank 19 and the small particles 21 in the storage tank 1 are reduced, the storage tank 1 is inclined later. Since they gather at the rear end, that is, are always supplied to the vertical conveyor 16, the small particles 21 in the storage tank 1 can be discharged from the second discharge port 9 without remaining. Further, it is not necessary to use the floor conveyor 15 as in the prior art, which is efficient in terms of transfer speed and fuel consumption.

  When the small particles 2 are gas hydrate pellets, an opening / closing lid 3 a having excellent sealing properties is used for the first discharge port 3 in order to maintain the airtightness inside the storage tank 1.

  Next, a case where the storage tank 19 is buried in the ground and the inlet 20 of the storage tank 19 is lower than the first outlet 3 of the storage tank 1 will be described with reference to FIG. In this case, the transport vehicle is moved so that the first discharge port 3 of the storage tank 1 is brought close to the input port 20 of the storage tank 19, the opening / closing lid 3 a of the first discharge port 3 is opened, and the storage tank 1 is moved backward. Tilt. Due to this inclination, the small particles 21 in the storage tank 1 are thrown into the storage tank 19 from the first discharge port 3 by gravity. In this case, since gravity is used, there is no need to operate the vertical conveyor 16 and the discharge conveyor 17. Therefore, the small granules 21 can be discharged quickly, the fuel consumption can be reduced, and efficient discharge can be achieved.

  Further, as shown in FIG. 2, the first discharge port 3 is provided at the center in the width direction at the lower rear surface of the storage tank 1, and the vertical conveyor 16 is attached to the first discharge port 3 in the width direction. Thus, the first discharge port 3 is not obstructed by the vertical conveyor 16 and can smoothly discharge the small particles 21 in the storage tank 1. Of course, if the first discharge port 3 and the vertical conveyor 16 are connected in the width direction, the first discharge port 3 is not obstructed by the vertical conveyor 16, so the first discharge port 3 is located at the center in the width direction of the lower rear surface of the storage tank 1. The first discharge port 3 is preferably provided at the central portion in the width direction of the storage tank 1 for balance purposes.

  Thus, in the first embodiment, the transported small particles 21 can be charged into the storage tank 19 regardless of the height position of the charging port 20 of the destination storage tank 19. Further, the small particles 21 in the storage tank 1 can be efficiently discharged from the first discharge port 3 or the second discharge port 9.

  In particular, the storage tank 19 for storing the gas hydrate needs to maintain predetermined pressure and temperature conditions. Depending on the location conditions, construction costs, etc., both the case where the storage tank 19 is erected on the ground and the case where it is embedded in the ground may be used. For this reason, when the small particles 21 are gas hydrate pellets, the transport vehicle of this embodiment is suitable.

  Next, a second embodiment will be described with reference to FIG. In the first embodiment, the inside of the storage tank 1 is a single storage portion, but in the second embodiment, the partition wall 4 that separates the storage tank 1 into a plurality of storage portions 5a to 5c is provided. The number and position of the partition walls 4 can be determined as appropriate. The partition walls 4 are provided with opening / closing doors 6 that allow the adjacent accommodating portions 5a to 5c to communicate with each other, and can be opened and closed manually or automatically. The direction and method of opening and closing are not special, and a general one may be adopted. In addition, loading ports 2a to 2c are provided on the upper surfaces of the accommodating portions 5a to 5c, respectively.

Since the usage method of the second embodiment is basically the same as that of the first embodiment, different points will be described below with reference to FIG. For convenience of explanation, the vertical conveyor 16 and the discharge conveyor 17 are not shown.
First, when loading the small particles 21 into the storage tank 1, the small particles 21 are loaded from the loading ports 2 a to 2 c with the open / close door 6 of each partition wall 4 being closed. Thereby, the small particle body 21 of a different kind and magnitude | size can be accommodated for every accommodating part 5a-5c. Of course, the same small particle body 21 can also be accommodated in all the accommodating parts 5a-5c.

  Further, in this structure, even when a small amount of small particles 21 are accommodated in the storage tank 1, the small particles 21 are not greatly shaken in the storage tank 1 during transportation, and the center of gravity movement of the transport vehicle is reduced and safety is improved. Will increase.

  When arriving at the destination and putting the granules 21 in the storage tank 1 into the storage tank 19 at the destination, the storage tank 1 is tilted with the open / close door 6 of each partition wall 4 closed, and the first The small particles 21 are put into the storage tank 19 from the discharge port 3 or the second discharge port 9 (not shown) of the discharge conveyor 17.

  That is, the small particles 21 in the last storage portion 5a are discharged first, and then the opening / closing door 6 of the partition wall 4 that separates the last storage portion 5a and the adjacent storage portion 5b is opened, and the inside of the storage portion 5b is opened. The small particles 21 are discharged. In this manner, the small particles 21 in the storage units 5b and 5c are sequentially discharged from the storage unit 5a at the rearmost part. When the small particles 21 stored in each storage unit 5 are the same, the storage tank 1 can be inclined after the opening / closing door 6 of each partition 4 is opened, and the small particles 21 can be discharged.

  Moreover, as shown in FIG. 5, when the small particle body 21 accommodated in the storage tank 1 adheres, the sticking prevention apparatus 41 which eliminates this sticking can also be provided. In particular, when the small particles 21 are gas hydrate pellets, the pellets may stick to each other, and if they are fixed to form a large lump, smooth discharge from the storage tank 1 cannot be performed. It is an effective device. The sticking prevention device 10 can be operated not only after the small particles 21 are stuck, but also can be actuated in advance to prevent sticking.

  The sticking prevention device 10 is not particularly limited as long as the sticking of the small particles 21 can be prevented, and a general crusher or knocker can be used. Further, the installation position, number, size, etc. of the anti-adhesion device 10 can be determined as appropriate. It is preferable to do this.

It is a partially cutaway explanatory view showing the side of the transport vehicle of the first embodiment. It is a rear view which shows the rear part of the transport vehicle of 1st embodiment. It is a partial cross-section explanatory drawing which shows the state which the transport vehicle of 1st embodiment throws a small particle into the charging port of the storage tank in a high position. It is a partial cross section explanatory view which shows the state which the transport vehicle of 1st embodiment throws a small particle into the charging port of the storage tank in a low position. It is a partial cross-section explanatory drawing which shows the inside of the accommodation tank of the transport vehicle of 2nd embodiment. It is a partially expanded explanatory view which shows the internal structure of the rear surface of the transport vehicle of 1st embodiment. It is a partially expanded perspective explanatory view which shows the internal structure of the rear surface of the transport vehicle of 1st embodiment. It is a partial cross section explanatory drawing explaining the structure of the conventional small particle transport vehicle.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Storage tank 2, 2a-2c Loading port 3 1st discharge port 3a Opening / closing lid | cover 4 Bulkheads 5a-5c Storage part 6 Opening / closing door 7 Heat insulating material 8 Connection path 9 2nd discharge port 10 Sticking prevention apparatus 11 Chassis 12 Dump hinge 13 Inclination apparatus 14 Refrigerator 15 Floor screw conveyor (floor conveyor)
16 Vertical screw conveyor (vertical conveyor)
17 Discharge screw conveyor (Discharge conveyor)
18 Conveyor discharge port 19 Storage tank 20 Input port 21 Small particles

Claims (4)

  A small particle transport vehicle that stores and transports small particles in a storage tank provided on a chassis, and includes a dump hinge that rotatably supports a lower rear side of the storage tank, and a first hinge provided on a rear surface of the storage tank. 1 discharge port, an open / close lid that opens and closes the first discharge port, and is connected to the first discharge port in the width direction, and transfers the contained small particles from one end to the other end The vertical screw conveyor and one end of the vertical screw conveyor are rotatably connected, the other end has a second discharge port, and the contained small particles transferred by the vertical screw conveyor are A discharge screw conveyor that transfers from one end to the other end and discharges from the second discharge port, and a tilting device that tilts the storage tank backward with the dump hinge as a rotation axis. Granules truck.   2. The small particle transport vehicle according to claim 1, wherein the small particles are gas hydrate pellets, and a refrigerator for cooling the inside of the storage tank is provided.   The small particle transport vehicle according to claim 1 or 2, further comprising a partition wall that separates the inside of the storage tank into a plurality of storage portions.   The small particle transport vehicle according to any one of claims 1 to 3, further comprising a sticking prevention device that eliminates sticking of the small particles in the storage tank.

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