JP2014028560A - Horizontal screw silo, and cargo transport ship provided with same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a horizontal screw silo and a cargo transport ship provided with same in which a horizontal conveyance device is stably turned for a stable cargo handling.SOLUTION: A horizontal screw silo 10 comprises: a horizontal conveyance device 40 which horizontally conveys a cargo C between a center column 14 and a cylindrical wall surface 20d of a cargo hold 20; a turning device 39 which turns the horizontal conveyance device 40. The turning device 39 includes: a running wheel 31 which is disposed at an end part of a turning frame 30 in the cylindrical wall surface 20d side, and which rolls on a rail part 20e arranged along the cylindrical wall surface 20d while supporting a part of weight of the turning frame 30; a pinion which is engaged with a pin gear disposed along the cylindrical wall surface 20d in the vicinity of the rail part 20e; and a driving device 32a which rotationally drives the pinion, thereby turn-driving the turning frame 30.

Description

  TECHNICAL FIELD The present invention relates to a horizontal screw silo for loading cargo such as powder, fine particles, lumps or pellets, and high moisture content, and in particular, a horizontal screw that can be mounted on a cargo carrier ship or integrated as a part of a hull. The present invention relates to a type silo and a cargo carrier equipped with the same.

  In recent years, silos have been proposed in which cargoes such as powders, fine particles, lumps, and high moisture content are efficiently loaded and loaded with high cargo handling efficiency (Patent Documents 1 and 2). Such a silo is installed on land, for example, and can load cargo in a cylindrical cargo hold in a bulked state. For example, application of this to a cargo carrier is also under consideration.

  Usually, a silo having such a cargo hold is provided with a horizontal conveyor or the like as a horizontal transfer device for transferring the cargo in the horizontal direction and putting it into the cargo hold. The vehicle is supported by a traveling device that drives traveling wheels that travel on rails provided on the inner wall surface, and is configured so that cargo can be loaded while turning in the turning direction in the cargo hold. However, in the case of a system in which the traveling wheels are directly driven, there is a possibility that the vehicle cannot stably turn when slipping or the like occurs.

Japanese Patent Laid-Open No. 7-172586 Japanese Utility Model Publication No.57-52059

  It is an object of the present invention to provide a horizontal screw silo capable of stably turning a horizontal transfer device and performing stable cargo handling, and a cargo carrier equipped with the same.

  A horizontal screw silo according to the present invention includes a cargo hold having a cargo supply port at an upper portion thereof and having a cylindrical wall surface inside to accommodate a powdery, granular, lump or pellet-like cargo, and the interior of the cargo hold. And a swivel device having a swivel frame that is pivotally driven with the central axis of the cargo hold as a swivel axis and whose tip extends toward the wall surface side, and is suspended from the swivel frame with the central axis as a swivel axis It is suspended via a suspending wire, followed by a swiveling motion of the swivel frame and swiveling, and moved up and down by a winding or unwinding operation of the hanging wire, and the cargo is moved to the center of the cargo hold. A screw-type horizontal transport device that transports and collects and collects in the horizontal direction between the wall surfaces, and the cargo collected by the horizontal transport device is placed outside the cargo hold. In the horizontal screw silo that discharges, the swivel device is provided at an end portion on the wall surface side of the swivel frame, and is provided in an annular shape provided on the wall surface side so as to substantially coincide with the swivel center axis of the swivel frame. A traveling wheel that rolls on the rail portion while supporting a part of the load of the swivel frame, and a gear portion that meshes with a meshed portion provided along the rail portion, and the gear portion is driven to rotate. And a drive device for turning the turning frame.

  In one embodiment of the present invention, it has a center column fixedly arranged so as to extend in the vertical direction at the center of the cargo hold, and the cargo from the horizontal transport device is passed through the center column of the cargo hold. Discharge to the outside.

  In another embodiment of the present invention, the meshed portion and the gear portion are composed of a pin gear and pinion or a rack and pinion.

  A cargo carrier according to the present invention is one in which the horizontal screw silo described above is mounted in a hold.

  According to the present invention, it is possible to stably rotate the horizontal conveyance device and perform stable cargo handling.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side sectional view showing an overall configuration of a cargo carrier ship equipped with a horizontal screw silo according to a first embodiment of the present invention. It is an upper top view of the cargo carrier. It is A-A 'expanded sectional drawing of FIG. FIG. 4 is an enlarged sectional view taken along line B-B ′ of FIG. 3. FIG. 4 is an enlarged cross-sectional view of FIG. 3 taken along C-C ′. It is a partial expansion schematic diagram of the horizontal conveyance apparatus of the horizontal screw type silo. It is a partially expanded sectional view of FIG. It is D-D 'sectional drawing of FIG. It is sectional drawing which shows a partial structure of the horizontal screw type silo which concerns on the 2nd Embodiment of this invention.

  Hereinafter, a horizontal screw silo and a cargo carrier equipped with the same according to embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[First Embodiment]
FIG. 1 is a side sectional view showing an overall configuration of a cargo carrier ship equipped with a horizontal screw silo according to a first embodiment of the present invention. 2 is an upper plan view of the cargo carrier, FIG. 3 is an AA ′ enlarged sectional view of FIG. 2, FIG. 4 is a BB ′ enlarged sectional view of FIG. 3, and FIG. 5 is CC ′ of FIG. It is an expanded sectional view. 6 is a partially enlarged schematic view of a horizontal conveying device of a horizontal screw silo, FIG. 7 is a partially enlarged sectional view of FIG. 3, and FIG. 8 is a DD ′ sectional view of FIG. As shown in FIG.1 and FIG.2, the cargo carrier 1 is a ship which conveys cargoes, such as powder, a fine grain, a lump shape, a pellet form, and a high moisture content.

  The cargo carrier 1 has a double bottom plate 3 on a bottom bottom plate 2 and an outer skin 4 on a side surface. In addition, the cargo carrier 1 is provided with an upper deck 5 at the top. A bridge 7a is provided on the engine room of the stern portion 7 opposite to the bow portion 6 and the hull front-rear direction. Between the bow portion 6 and the stern portion 7, for example, a plurality of cylindrical horizontal screw silos 10 for accommodating the cargo C are provided. The cargo carrier 1 includes, for example, a mega float or a dredger that does not have a propulsion device.

  As shown in FIG. 3, the horizontal screw silo 10 includes a cylindrical cargo hold 20 having a cylindrical shape, for example. A center column 14 that extends in the vertical direction is fixed to the center of the cargo hold 20, and a swivel cylinder 11 that extends to the upper center of the cargo hold 20 is provided on the center column 14. A swivel device 39 is provided at an upper position inside the cargo hold 20, and the swivel device 39 includes a swivel frame 30 that swivels together with the swivel cylinder 11 and whose tip extends to the inner wall surface of the cargo hold 20. A horizontal transfer device 40 is suspended from the revolving frame 30. The horizontal conveyance device 40 is controlled in the vertical position and swiveled together with the swivel frame 30 by controlling the amount of suspension of the swivel device 39 from the swivel frame 30 according to the height of the upper surface of the cargo C.

  A supply chute 11c for loading cargo C from above is provided at the upper end of the swivel cylinder 11. A horizontal screw conveyor 12 is disposed below the supply chute 11c, and a telescopic chute 13 that expands and contracts in the vertical direction is disposed at the discharge portion of the horizontal screw conveyor 12. The discharge port of the telescopic chute 13 is located on the turning center side end of the horizontal transfer device 40. The horizontal conveyance device 40 conveys the cargo C received through the supply chute 11c, the horizontal screw conveyor 12, and the telescopic chute 13 toward the outside in the radial direction, and in the process, the cargo C is dispersed in the radial direction on average. . Further, the horizontal transfer device 40 turns in accordance with the turning operation of the turning frame 30 of the turning device 39 and spreads the cargo C uniformly in the circumferential direction. Further, the horizontal conveying device 40 scrapes the cargo C and conveys it inward in the radial direction, and pays it out to the lower center of the cargo hold 20 via the center column 14. The cargo C paid out from the cargo hold 20 is discharged to the outside via the discharge conveyor 18. In addition, when handling the cargo C with low adhesiveness, it is also possible to replace the supply chute 11c and the horizontal screw conveyor 12 with an inclined chute (not shown).

Next, the detail of each part is demonstrated.
The cargo hold 20 includes a cylindrical side wall portion 20a, a bottom surface portion 20b that closes the lower end of the cylindrical side wall portion 20a, and an upper surface portion 20c that closes the upper end of the cylindrical side wall portion 20a. The inner surface of the cylindrical side wall portion 20a forms a cylindrical wall surface 20d. The bottom surface portion 20b and the top surface portion 20c are made of a planar disk-shaped member. The bottom surface portion 20b can be formed horizontally as shown in the figure, but when considering drainage from the cargo hold 20, it is formed so as to have a structure that descends from the outer peripheral side toward the central side. You may do it.

  A hole for receiving cargo is formed in the upper surface portion 20c of the horizontal screw silo 10, and the upper end of the swivel cylinder 11 is rotatably attached to the hole portion via the swivel bearing 11a. In the center of the swivel cylinder 11, a supply chute 11c that turns together with the swivel cylinder 11 continuing from the fixed cargo supply port 11b is arranged. The center column 14 is connected to the lower end of the swivel cylinder 11 via a bearing 11d. The center column 14 extends from the lower end portion of the swivel cylinder 11 to the bottom surface portion 20b through the center of the cargo hold 20, and is fixed to the bottom surface portion 20b. Although not shown in the drawings, the center column 14 has a receiving portion (receiving port) that is open over substantially the entire circumference and is arranged in multiple stages in the vertical direction, and is disposed on the side of the center column 14 by a horizontal transfer device 40 described later. It is configured so that the cargo C being conveyed can be carried into the interior thereof.

  A rail receiving portion 20f protruding intermittently or continuously from the cylindrical wall surface 20d is formed on the upper portion of the cylindrical wall surface 20d of the cylindrical side wall portion 20a. On the upper surface of the rail receiving portion 20f, a rail pedestal portion 20g along the cylindrical wall surface 20d and a rail portion 20e disposed on the upper surface thereof are provided. As shown in FIGS. 4 and 6, the turning frame 30 of the turning device 39 is supported at the center by the turning cylinder 11, and the end on the cylindrical wall surface 20d side is a traveling wheel on the rail portion 20e of the cylindrical wall surface 20d. 31 is supported. The swivel frame 30 is swiveled together with the swivel cylinder 11. The traveling wheel 31 is provided on the turning frame 30 so as to freely roll while supporting a part of the load of the turning frame 30.

  Further, the turning device 39 includes a pin gear 33b of a meshed portion provided on an inner peripheral surface side of the rail base portion 20g via an attachment bracket portion 33c provided at an end portion of the turning frame 30 on the cylindrical wall surface 20d side. An intermeshing pinion (gear part) 33a, and a drive device 32a and a reduction gear 32b that rotationally drive the pinion 33a are provided. As shown in FIG. 3, a winch 35 and a wire sheave 36 for winding the hanging wire 34 are provided on the upper part of the turning frame 30 of the turning device 39.

  Note that the pinion 33a of the turning device 39 may be connected to and driven by an extension shaft, a universal joint, or the like between the rotation shaft and the output shaft of the speed reducer 32b. As shown in FIG. 8, the pinion 33 a is arranged so that the rotation shaft 33 aa is parallel to the turning central axis P of the turning frame 30. The pin gear 33b is provided so that the center of the arrangement pitch circle coincides with the central axis P. The pinion 33a and the pin gear 33b are arranged so that their pitch circles are almost in contact with each other. Furthermore, the output shaft of the drive device 32a and the input shaft of the speed reducer 32b are coupled. In addition, you may make it arrange | position the pin gear 33b via the attachment bracket part 33c directly provided in the rail receiving part 20f and the cylindrical wall surface 20d, without providing in the rail base part 20g.

  The horizontal transfer device 40 is connected to the suspension wire 34 at a plurality of connection points 34 a and 34 b (see FIG. 5) while maintaining a horizontal state on the revolving frame 30, and is suspended by the suspension wire 34. The swiveling device 39 supports the entire horizontal conveying device 40 so that it can move up and down by winding or unwinding the suspension wire 34 via the wire sheave 36 on the swivel frame 30 by the winch 35.

  As shown in FIG. 5, the horizontal transport device 40 is attached so as to be capable of turning and moving up and down in the cargo hold 20 via, for example, a turning roller unit 45 disposed around the center column 14 and the suspension wire 34. It has been. The horizontal conveyance device 40 conveys and collects the cargo C in the cargo hold 20 by transferring it horizontally between the central portion of the cargo hold 20 (here, the center column 14) and the cylindrical wall surface 20d. is there. In this example, the turning roller unit 45 is configured to support only the force applied in the horizontal direction with respect to the center column 14, and is thus configured to move freely in the vertical direction.

  The horizontal conveyance device 40 includes a screw frame portion 48 that extends in the radial direction from the central axis of the cargo hold 20 toward the cylindrical wall surface 20d. The screw frame part 48 is integrally joined to the turning roller unit 45, for example. The screw frame portion 48 supports a pair of horizontal screws 41 and 42 that extend in the longitudinal direction of the horizontal conveying device 40 and are juxtaposed in the short direction for conveying the cargo C in the cargo hold 20 in the horizontal direction. To do. Moreover, the screw frame part 48 equips the edge part by the side of the cylindrical wall surface 20d with the drive machines 43 and 44 for driving the horizontal screws 41 and 42. FIG. The driving machines 43 and 44 are further attached to the screw shafts of the horizontal screws 41 and 42, respectively, whereby the screw frame portion 48 receives and drives the overturn reaction force generated when the driving machines 43 and 44 are operated. The machines 43 and 44 are configured not to fall.

  As shown in FIG. 5, the connection points 34 a and 34 b are provided at two locations in the short direction at two locations on both ends in the longitudinal direction of the horizontal conveyance device 40. Specifically, the connection point 34 a is provided at the end of the screw frame portion 48 on the cylindrical wall surface 20 d side, and the connection point 34 b is provided at the end of the screw frame portion 48 on the center column 14 side.

  As shown in FIGS. 5 and 6, the horizontal screw 41 is disposed on the leading side (front side) of the turning direction T during the unloading of the horizontal conveying device 40 indicated by the arrows in the drawing, and the horizontal screw 42 is positioned on the trailing side (front side). It is arranged on the rear side. Each horizontal screw 41, 42 is configured to have a different screw outer diameter so that the screw outer diameter of the horizontal screw 41 is smaller than the screw outer diameter of the horizontal screw 42 in this example. The cargo C is disposed so as to be scraped by a predetermined amount of depth D1 from the upper surface CS of C (see FIG. 6). By forming the screw outer diameters differently as described above, for example, after the horizontal screw 41 scrapes the cargo C shallower than the depth D1, the horizontal screw 42 scrapes the remaining cargo C, The cargo C having a thickness corresponding to the fixed depth D1 can be scraped off.

  The horizontal screws 41 and 42 of the horizontal conveying device 40 convey the cargo C in the horizontal direction between the center of the cargo hold 20 and the cylindrical wall surface 20d, and perform dispersion, dispersion, collection and collection. These are driven by the driving machines 43 and 44 so as to rotate in opposite directions. The horizontal screws 41 and 42 are configured such that, for example, the cargo C moves to the cylindrical wall surface 20d side in the forward rotation, and the cargo C moves to the center column 14 side in the reverse rotation.

  The telescopic chute 13 supplies the cargo C from the horizontal screw conveyor 12 to the horizontal conveying device 40 by free fall (lowering) of the cargo C, and expands and contracts as the horizontal conveying device 40 moves up and down. It is configured as follows. The horizontal screw conveyor 12 turns with the turning of the turning frame 30, and one end side of the horizontal screw conveyor 12 is arranged below the supply chute 11 c and the other end side is arranged above the telescopic chute 13.

  The lower end of the telescopic chute 13 is disposed in the vicinity of the center column 14 between the horizontal screws 41 and 42. Therefore, the telescopic chute 13 plays the role of a feeder for reliably dropping the cargo C onto the horizontal transport device 40 that turns the cargo C during loading.

  As shown in FIG. 3, as an unloading facility outside the horizontal screw silo 10, a discharge conveyor 18 that performs horizontal conveyance with one end side disposed below the discharge port 29 of the center column 14, and the discharge conveyor 18 is provided with an upward conveying device 8 (see FIG. 1) for conveying the cargo C upward from the other end side of 18. The unloading facility is configured to include an upper horizontal transport device provided on the upper deck 5, a connection transport device 8a (see FIG. 1) connected to the land-side cargo handling facility, etc. Is done.

  The discharge conveyor 18 is configured by, for example, a screw conveyor or a belt conveyor. The upward conveying device 8 is a device that conveys the cargo C conveyed by the discharge conveyor 18 onto, for example, the upper deck 5, and is a screw conveyor, a belt conveyor, a bucket conveyor or the like arranged in the vertical direction or the diagonally up and down direction. It is comprised and is arrange | positioned at the bow part 6 side, the stern part 7 side, or these center parts.

  The connection transport device 8a is a device that transports the cargo C transported by the upward transport device 8 to the land-side cargo handling facility via the connecting portion, and can transport the cargo C to the land-side cargo handling facility.

  On the other hand, as the cargo handling equipment outside the horizontal screw silo 10, as shown in FIG. 2, one end is connected to the distribution device 8c connected to the connection conveying device 8b and the other end is the horizontal screw silo 10. The supply device 9 is connected to the cargo supply port 11b. The cargo C conveyed from the land-side cargo handling facility is distributed by the distribution device 8c via the connection conveyance device 8b, and is appropriately distributed and supplied to the horizontal screw silo 10 through each supply device 9.

  The supply device 9 is a device that transports the cargo C supplied from the distribution device 8 c in the horizontal direction and supplies it to the cargo supply port 11 b of each horizontal screw silo 10. The supply device 9 is composed of, for example, a horizontal screw conveyor, a belt conveyor, a bucket conveyor, or the like.

  Here, cargo handling using the horizontal screw silo 10 will be described. The cargo handling includes cargo C, land-side cargo handling equipment, connection transport device 8b, distribution device 8c, supply device 9, cargo supply port 11b at the top of the horizontal screw silo 10, supply chute 11c, horizontal screw conveyor 12, telescopic The cargo handling is accommodated in the cargo hold 20 via the chute 13 and the horizontal conveyance device 40.

  That is, first, when the cargo carrier 1 arrives at the quay of the loading area, the land-side cargo handling facility and the distribution device 8c are connected via the connection transport device 8b by a connection portion (not shown). Then, the cargo C transported from the land-side cargo handling facility is supplied to the distribution device 8c via the connection transport device 8b, and provided on the cargo hold 20 of each horizontal screw silo 10 via the supply device 9. Supplied to the cargo supply port 11b.

  The cargo C supplied to the cargo supply port 11 b falls from the supply chute 11 c to the horizontal screw conveyor 12, is transported in the horizontal direction, and is supplied to the telescopic chute 13. The cargo C supplied to the telescopic chute 13 is conveyed to the center column 14 side of the horizontal conveying device 40 by free-falling or the like in the telescopic chute 13.

  The horizontal conveying device 40 moves the cargo C conveyed to the horizontal conveying device 40 from the center column 14 side of the horizontal conveying device 40 to the cylindrical wall surface 20d side by, for example, rotating the horizontal screws 41 and 42 respectively. It is configured to be transported horizontally. In addition, before the start of cargo handling, the horizontal conveyance device 40 is moved to a position that maintains a predetermined height from the lower limit position level in the cargo hold 20 of the preset horizontal conveyance device 40.

  The cargo C transported to the horizontal transport device 40 in such a state is transported horizontally and horizontally transported from the center column 14 side to the cylindrical wall surface 20d side in the vicinity of the horizontal screws 41 and 42 and below the space. It is accommodated sequentially along the device 40. Thus, the cargo C is scattered in the centrifugal direction (radial direction) of the cargo hold 20.

  Then, when the cargo C is leveled and accommodated in the whole area in the centrifugal direction, the drive device 32a of the turning device 39 is driven to rotate the pinion 33a via the speed reducer 32b, and the pinion 33a meshes with the pin gear 33b. By rotating, the revolving frame 30 is revolved by a predetermined angle to move the horizontal conveying device 40 in the circumferential direction (the revolving direction T ′ during loading, see arrows in FIGS. 4 and 5), and the centrifugal direction thereof The cargo C is stored in the same area. When this process is repeated or continuously performed and the horizontal transport device 40 is rotated 360 ° around the central axis P to make one round, the leveling and loading of the cargo C at that height is completed. In the loading / unloading operation, the cargo C is evenly dispersed and accommodated in the circumferential direction of the cargo hold 20 by the turning of the horizontal transfer device 40 accompanying the turning of the turning frame 30 of the turning device 39.

  Then, after the leveling and accommodation of the cargo C for one round in the cylindrical cargo hold 20 is completed, the suspension wire 34 that suspends the horizontal transfer device 40 is wound up by the winch 35 provided on the revolving frame 30. The height of the horizontal transfer device 40 is increased by a predetermined amount. Thereafter, when the leveling and accommodation of the cargo C for one round at this height is completed, the height of the horizontal conveying device 40 is further increased by a predetermined amount.

  By repeating such processing, the cargo C is leveled and accommodated from directly above the bottom surface portion 20b to a fully loaded state, whereby the cargo C is fully loaded in the cargo hold 20 and the loading operation is completed. The loading of cargo C into the cargo hold 20 is performed simultaneously or sequentially by the horizontal screw silos 10 so that all horizontal screw silos 10 are full of cargo C. Thereby, the loading of the cargo C onto the horizontal screw silo 10 is completed.

  Next, unloading using the horizontal screw silo 10 will be described. The unloader handles the cargo C loaded in the cargo hold 20 of the horizontal screw silo 10 with the horizontal transport device 40, the center column 14, the discharge conveyor 18, the upward transport device 8, the horizontal transport device on the upper deck 5, and It is a cargo handling that unloads to the land-side cargo handling facility via the connecting transport device 8a and the like.

  That is, first, when the cargo carrier 1 arrives at the quay of the landing site, the land-side cargo handling facility and the connection transport device 8a are connected by the connecting portion. Next, the horizontal screws 41 and 42 of the horizontal conveying device 40 are rotated in the reverse direction to the cargo handling, and then the hanging wire 34 that suspends the horizontal conveying device 40 from the revolving frame 30 of the revolving device 39 is connected to the winch 35. The horizontal conveying device 40 is moved so as to have a predetermined relative height with respect to the upper surface CS of the cargo C on which it is mounted.

  Next, the drive unit 32a of the turning device 39 is driven to rotate the pinion 33a through the speed reducer 32b in the reverse direction to the cargo handling, and the pinion 33a meshes with the pin gear 33b to rotate the turning frame 30 to a predetermined level. By turning at the turning speed and turning the horizontal transfer device 40 in the turning direction T opposite to that at the time of loading, the cargo C is horizontally scraped from the cylindrical wall surface 20d side of the horizontal transfer device 40 to the center column 14 side. Transport. By this horizontal conveyance, the cargo C is carried into the center column 14 from the discharge end of the horizontal conveyance device 40 through the receiving portion of the center column 14, falls inside, and is conveyed to the lower part of the center column 14.

  When the turning frame 30 is continuously turned and the horizontal transfer device 40 is turned 360 ° around the central axis P, the transfer of the cargo C to the center column 14 at that height is completed. In the unloading work, the cargo C is collected from the cargo hold 20 to the center column 14 by the turning of the horizontal transfer device 40 accompanying the turning of the turning device 39. In addition, the amount of unloading per hour can be controlled by controlling the turning speed of the turning frame 30.

  When the collection of the cargo C for one round in the cylindrical cargo hold 20 is completed, the suspension wire 34 that suspends the horizontal conveyance device 40 is drawn out from the revolving frame 30 of the revolving device 39, and the horizontal conveying device 40 Decrease the height by a predetermined amount. Thereafter, when the collection of the cargo C for one round at this height is completed, the height of the horizontal conveying device 40 is further lowered by a predetermined amount.

  By repeating such processing, the cargo C is collected in the cargo hold 20 from the top surface CS of the fully loaded cargo C to directly above the bottom surface portion 20b, so that the cargo C in the cargo hold 20 is placed in the center column 14. Collect and leave empty. The cargo C transported to the lower part of the center column 14 and discharged from the discharge port 29 is transported in the horizontal direction by the discharge conveyor 18 disposed below the horizontal screw silo 10.

  And the cargo C conveyed by this discharge conveyor 18 is conveyed on the upper deck 5 by the upper direction conveying apparatus 8, and the land side via the horizontal conveying apparatus on the upper deck 5, the conveying apparatus 8a for connection, and a connection part. Transport to cargo handling equipment. This is performed for all of the cargo C in the cargo hold 20 of each horizontal screw silo 10. Thereby, the unloading of the horizontal screw silo 10 is completed.

  For example, in the horizontal screw silo 10 having a structure that does not have the center column 14 that is configured to handle a cargo that can be discharged by natural fall (descent) by forming a free rest surface, the screw frame portion 48 includes a screw A roller that contacts and rotates with the cylindrical wall surface 20d at the end on the cylindrical wall surface 20d side of the screw frame portion 48 of the horizontal conveying device 40 is configured to reach the vicinity of the cylindrical wall surface 20d on the opposite side of the turning center of the frame portion 48. (Not shown), a vibration dispensing device (not shown) is provided immediately below the discharge port 29, and the surface of the bottom surface portion 20b is inclined from the outer peripheral side of the cargo hold 20 toward the center. Similarly, it is possible to realize a structure in which the horizontal conveyance device 40 can be stably swung to receive and discharge the cargo C.

  As described above, in the cargo ship 1 including the horizontal screw silo 10 according to the first embodiment of the present invention, the swivel device 39 meshes with the pin gear 33b by rotating the pinion 33a so that the swivel frame 30 is moved. Since the turning operation is performed, it is possible to stably turn the horizontal conveyance device 40 that turns together with the turning frame 30 without causing trouble due to slip or the like, compared with the case where the traveling wheels 31 are directly driven, and to perform stable cargo handling. Is possible.

  According to this configuration, for example, even if the cargo carrier 1 is tilted or shaken and the upper surface of the rail portion 20e is tilted, the pinion 33a and the pin gear 33b are meshed, so the traveling wheel 31 is The turning frame 30 and the horizontal transfer device 40 can be turned at a stable turning speed without slipping.

[Second Embodiment]
FIG. 9 is a cross-sectional view showing a partial configuration of a horizontal screw silo according to the second embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the location which overlaps with the already demonstrated part, and description is omitted.

  As shown in FIG. 9, the horizontal screw silo according to the second embodiment meshes with a pinion 33a instead of the pin gear 33b employed in the turning device 39 of the horizontal screw silo 10 according to the first embodiment. The difference is that the rack 33d is provided in the rail receiving portion 20g. Even if it is such a structure, there can exist an effect similar to 1st Embodiment as mentioned above.

  In the above-described embodiment, a case where the cargo hold 20 is cylindrical has been described as a preferable example. However, the cylinder in the present invention includes a cylinder, an elliptic cylinder, a polygonal cylinder, and the like.

  Moreover, the center part (position of a central axis) of the cargo hold 20 in the present invention indicates a virtual circle inside the cargo hold 20 and indicates the center of the virtual circle. The preferred center position is the center of a circle when the cargo hold 20 is cylindrical, and is as follows when the cargo hold 20 is other than a cylindrical shape (in the case of a polygon or an ellipse). That is, when the shape of the cargo hold 20 is other than the cylindrical shape (a) the shape of the cargo hold 20 is a rectangular shape or a polygonal cylindrical shape whose opposite sides are parallel to each other, the intersection of the lines connecting each side and the midpoint of the opposite side The center. In addition, when the shape of the cargo hold 20 is other than the cylindrical shape and other than the above (a), a circle having the maximum diameter that is inscribed in at least two places on the cylindrical wall surface and does not intersect with the wall surface is assumed. The center is the center of the cargo hold 20. Note that when a plurality of circles are hypothesized depending on conditions, any one of them may be selected, and the center of the selected virtual circle may be the center of the cargo hold 20.

DESCRIPTION OF SYMBOLS 1 Cargo ship 10 Horizontal screw type silo 11 Turning cylinder 12 Horizontal screw conveyor 13 Telescopic chute 14 Center column 20 Cargo hold 30 Turning frame 31 Traveling wheel 33a Pinion 33b Pin gear 39 Turning device 34 Suspension wire 40 Horizontal conveyance device 41, 42 Horizontal screw 43, 44 Drive unit 45 Revolving roller unit 48 Screw frame

Claims (4)

A cargo hold having a cargo supply port at the top and a cylindrical wall surface inside to accommodate a powdery, granular, lump or pellet shaped cargo,
A turning device having a turning frame disposed at an upper position inside the cargo hold and driven to turn about a central axis of the cargo hold and having a tip extending toward the wall surface;
The central axis is the pivot axis and is suspended from the pivot frame via a suspension wire, and is pivoted by following the pivoting motion of the pivot frame, and is moved up and down by the winding wire winding or feeding operation. A screw-type horizontal conveying device that conveys and collects the cargo in a horizontal direction between the center of the cargo hold and the wall surface,
In a horizontal screw silo that discharges the cargo collected by the horizontal conveying device to the outside of the cargo hold,
The swivel device
A partial load of the swivel frame is provided on an annular rail portion provided at an end of the swivel frame on the wall surface side so as to substantially coincide with the swivel center axis of the swivel frame on the wall surface side. Running wheels that roll while supporting,
A horizontal screw silo comprising: a gear unit that meshes with a meshed unit provided along the rail unit, and a driving device that rotates the gear frame by rotating the gear unit. . It has a center column fixedly arranged so as to extend in the vertical direction at the center of the cargo hold, and the cargo from the horizontal conveying device is discharged to the outside of the cargo hold through the center column. The horizontal screw silo according to claim 1. The horizontal screw silo according to claim 1 or 2, wherein the meshed portion and the gear portion are formed of a pin gear and pinion or a rack and pinion.   A cargo ship in which the horizontal screw silo according to any one of claims 1 to 3 is mounted in a hold.

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