JP5966183B2 - Horizontal screw silo and cargo carrier equipped with the same - Google Patents

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 more particularly to a horizontal screw silo mounted on a cargo carrier 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 has a structure having, for example, a cylindrical cargo hold, and cargo can be loaded in the cargo hold in a bulk state.

  However, in the case of cargo that has the property of pseudo-solidification, there is a strong tendency to easily pseudo-solidify due to changes over time and its own pressure, and in such cases, it is expected that it will be difficult to pay and ship cargo in the cargo hold. . Such a problem is particularly noticeable in a horizontal screw type silo having a horizontal screw that horizontally transports cargo in a cargo hold and having a horizontal transfer device that swivels in the cargo hold. It becomes a problem.

  In addition, when a horizontal screw silo having a cylindrical cargo hold as described above is mounted on a hull or the like of a cargo carrier, etc., usually a plurality of silos are used to improve the transportation efficiency. Etc. will be mounted. In this case, in order to increase the effective area as a cargo hold as much as possible by viewing the mounting location in plan, increase the effective area by using a polygonal cylinder or an elliptical cylinder instead of a perfect cylinder. Can be considered. However, when the cargo hold is made into a polygonal cylinder shape, an elliptical cylinder shape or the like, a portion where the cargo cannot be scraped by the horizontal transfer device occurs.

Japanese Patent Laid-Open No. 7-277521 JP-A-7-267374

  This invention has a horizontal transfer device that does not leave any cargo left in the cargo hold, such as a polygonal cylinder or an elliptical cylinder, and performs stable unloading and minimizes cargo remaining in the cargo hold after completion of unloading. An object of the present invention is to provide a horizontal screw silo that can be used.

  A horizontal screw type silo according to the present invention includes a cargo hold having a cargo supply port at an upper portion thereof, a cargo hold having a cylindrical wall surface for accommodating powdery, granular, lump or pellet-like cargo, and a center of the cargo hold. A center column which is fixedly arranged to extend in the vertical direction and is configured to be movable below the cargo hold when the cargo falls, and the cargo hold placed at an upper position inside the cargo hold. A pivot frame that is pivotally driven with a central axis of a virtual reference circle virtually formed in the internal space of the rotary axis and having a tip extending toward the wall surface, and a suspension wire that is attached to the pivot frame with the central axis as the pivot axis. The cargo is swung by following the swivel motion of the swivel frame and moved vertically by the hoisting or unwinding motion of the hanging wire, and the cargo is A screw-type horizontal transport device that transports and collects and collects in the horizontal direction between the central portion of the cargo and the wall surface, and the cargo collected by the horizontal transport device passes through the center column to the cargo. In the horizontal screw type silo that discharges to the outside of the warehouse, the horizontal conveying device is parallel to each other with a screw frame portion extending from the central axis toward the wall surface side and spaced apart in the swivel direction from the screw frame portion. And a plurality of horizontal screws that transport the cargo in the horizontal direction, and an auxiliary horizontal screw portion that is disposed in the vicinity of the wall surface of the screw frame portion and scrapes the cargo stored in the cargo hold. The auxiliary horizontal screw part is arranged so as to be movable with respect to the screw frame part, and the movement A moving screw attached to the frame via a plurality of bearings supporting at least two locations, and is movably arranged within a predetermined moving range along the axial direction of the moving screw. And

  In one embodiment of the present invention, each of the plurality of horizontal screws includes a screw shaft disposed on the screw frame portion, a screw blade provided on the screw shaft, and a screw blade disposed on the screw frame portion. A horizontal screw having a plurality of bearings that support at least both ends of the shaft, and a lower end position of an outer periphery of a screw blade of a horizontal screw arranged on the subsequent side in the swiveling direction at the time of the collection. It is formed so that it may be located in the lower part of the up-and-down direction of the above-mentioned cargo hold rather than the lower end position of the perimeter of this screw blade.

  In another embodiment of the present invention, the auxiliary horizontal screw part is disposed on the front side in the turning direction of the screw frame part during the pickup, and the screw blade of the moving screw has a lower end position on the outer periphery thereof. The substantially lower end position of the outer periphery of the screw blade of the horizontal screw arranged on the subsequent side in the swiveling direction at the time of the collection in the vertical direction of the cargo hold, and the substantially lower end position of the outer periphery of the screw blade of the horizontal screw arranged on the preceding side And the end on the central axis side is located within the movement range than the end on the wall surface of the screw blade of the horizontal screw disposed on the subsequent side. It is formed so as to be located on the shaft side, and the rotation direction of the moving screw of the auxiliary horizontal screw part is the rotation of the horizontal screw arranged on the subsequent side. It is set to be directed in the same direction.

  In still another embodiment of the present invention, the auxiliary horizontal screw portions are arranged on the front side and the rear side, respectively, of the screw frame portion in the swiveling direction at the time of loading, and are arranged on the front side. The lower end position in the vertical direction of the cargo hold of the outer periphery of the screw blade of the moving screw substantially coincides with the lower end position of the outer periphery of the screw blade of the horizontal screw arranged on the preceding side in the turning direction during the collection. And the end on the central axis side is closer to the central axis in the movement range than the end on the wall surface of the screw blade of the horizontal screw disposed on the preceding side. And the rotational direction of the moving screw is set to be opposite to the rotational direction of the horizontal screw disposed on the leading side, and the rear The auxiliary horizontal screw portion disposed on the side of the horizontal screw screw blade of the horizontal screw disposed on the rear side in the swiveling direction at the time of cargo collection is located at the lower end position of the cargo hold on the outer periphery of the screw blade of the moving screw. The end on the central axis side is formed so as to be substantially coincident with the lower end position of the outer periphery, and the movement is made more than the end on the wall surface side of the screw blade of the horizontal screw disposed on the subsequent side. The rotation direction of the moving screw is set to be opposite to the rotation direction of the horizontal screw disposed on the subsequent side, and is formed so as to be located on the central axis side within the range.

  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 carry out a stable unloading of cargo in a cargo hold such as a polygonal cylinder or an elliptical cylinder, and to minimize the cargo remaining in the cargo hold after the end of unloading.

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 a simplified top view taken along B-B ′ of FIG. 3. It is a simple top view of the horizontal screw type silo. FIG. 6 is an enlarged cross-sectional view taken along C-C ′ of FIG. 5. It is D-D 'expanded sectional drawing of FIG. It is an expansion partial sectional view of the auxiliary horizontal screw of the horizontal screw type silo. FIG. 10 is an enlarged sectional view taken along line E-E ′ of FIG. 9. It is a partial enlarged top view of the horizontal screw type silo which concerns on the 2nd Embodiment of this invention. It is a partial top view of the horizontal screw silo. It is F-F 'expanded sectional drawing of FIG.

  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 BB ′ of FIG. A simplified top view and FIG. 6 are simplified top views of a horizontal screw silo.

  7 is an enlarged sectional view taken along the line CC ′ of FIG. 5, FIG. 8 is an enlarged sectional view of the line DD ′ of FIG. 5, FIG. 9 is an enlarged partial sectional view of the auxiliary horizontal screw of the horizontal screw silo, FIG. FIG. 10 is an enlarged cross-sectional view taken along line EE ′ of FIG. 9. As shown in FIGS. 1 and 2, the cargo carrier 1 is a ship that carries a cargo C having a property of quasi-solidifying such as powder, granule, lump, pellet, and 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 part 7 on the opposite side of the bow part 6 of the cargo carrier 1 and the hull front-rear direction. Between the bow part 6 and the stern part 7, for example, a plurality of, for example, polygonal cylindrical horizontal screw silos 10 for accommodating the cargo C are mounted. The cargo carrier 1 includes, for example, a mega float or a dredger that does not have a propulsion device.

  As shown in FIG. 2, the horizontal screw silo 10 includes an octagonal cargo hold 20 as viewed in a plan view, for example. As shown in FIG. 3, a center column 14 extending in the vertical direction is fixed to the center of the cargo hold 20. A swivel cylinder 11 that extends to the center of the upper part of the cargo hold 20 is provided at the upper part of the center column 14. A swivel frame 30 is provided at an upper position inside the cargo hold 20 so as to turn together with the swivel cylinder 11 and the tip extends toward the wall surface 20d side of the cargo hold 20.

  The swivel frame 30 is swiveled with a shaft (center axis of the cargo hold 20) passing through the center of a virtual reference circle VRC (see FIG. 2 etc.) inscribed in a plurality of flat wall surfaces 20d of the cargo hold 20 as a swivel axis. The The virtual reference circle VRC is represented as shown in FIG. 6, for example.

  That is, as shown in FIG. 6, for example, L is the smaller one of the maximum inner dimensions L1 and L2 (here, L1> L2) between the opposing wall surfaces 20d of the horizontal screw silo 10. Then, a virtual reference circle VRC inscribed in the wall surface 20d is set with the dimension L as a diameter and the center axis P of the cargo hold 20 as the center. FIG. 6 shows an example in which the virtual reference circle VRC is inscribed in the wall surface 20d at four locations. Therefore, the radius Ro of the virtual reference circle VRC is set to L / 2.

  A horizontal transfer device 40 is suspended from the revolving frame 30. The horizontal transfer device 40 is controlled in the vertical position by controlling the amount of suspension from the revolving frame 30 according to the height of the upper surface CS of the cargo C, and along with the revolving frame 30 along the virtual reference circle VRC. Turn inside the cargo hold 20.

  At the upper end of the swivel cylinder 11, a supply chute 11 c for introducing the cargo C into the cargo hold 20 from above is provided. A horizontal screw conveyor 12 is disposed below the supply chute 11c. 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 directs the cargo C received via the supply chute 11c, the horizontal screw conveyor 12, and the telescopic chute 13 to the outside of the radial direction of the virtual reference circle VRC (hereinafter simply referred to as “radial direction”). Transport. Further, the horizontal transfer device 40 spreads the cargo C in the radial direction on the average in the course of transfer.

  Further, the horizontal transport device 40 uniformly distributes the cargo C in the circumferential direction of the virtual reference circle VRC (hereinafter simply referred to as “circumferential direction”) by the turning operation by the turning frame 30. 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 the cargo C with low adhesiveness is handled by the horizontal screw silo 10, the supply chute 11c and the horizontal screw conveyor 12 can be replaced with an inclined chute (not shown).

  Moreover, the horizontal screw type silo 10 is comprised by the octagonal cylindrical side wall part 20a as mentioned above. For this reason, as shown in FIG. 2, when a plurality of horizontal screw silos 10 are mounted on the cargo carrier 1, the effective area in the horizontal plane of the cargo hold 20 is increased as compared with a completely cylindrical one. Is possible.

Next, the detail of each part is demonstrated.
The cargo hold 20 includes a plurality of flat plate-like side wall portions 20a forming a polygonal cylinder, a bottom surface portion 20b that closes the lower ends of the side wall portions 20a, and an upper surface portion 20c that closes the upper ends of the side wall portions 20a. ing. Here, eight side wall portions 20a are combined to form an octagonal cylindrical cargo hold 20.

  The inner surface of the side wall portion 20a forms a planar wall surface 20d. The bottom surface portion 20b and the top surface portion 20c are made of a polygonal member having a planar shape that matches the polygonal cylindrical shape formed by the side wall portion 20a. In addition, although the bottom face part 20b can also be formed horizontally as shown in the drawing, in consideration of drainage from the cargo hold 20, the bottom part 20b has a structure that descends from the outer periphery side of the virtual reference circle VRC toward the center side. You may make it form so that it may become.

  A hole for receiving the cargo C 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, the center column 14 has a slit-shaped receiving portion (receiving port) that is open over substantially the entire circumference and is arranged in multiple stages in the vertical direction. The cargo C transported to the 14 side can be carried into the interior thereof.

  A rail receiving portion 20f protruding intermittently or continuously from the wall surface 20d is formed on the upper surface of the wall surface 20d of the side wall portion 20a, for example, so as to make a round around the wall surface 20d along the virtual reference circle VRC. An annular rail portion 20e is provided on the upper surface of the rail receiving portion 20f along the virtual reference circle VRC.

  The center part of the turning frame 30 is supported by the turning cylinder 11, and the end part on the wall surface 20d side is supported by the rail part 20e. The swivel frame 30 is swiveled together with the swivel cylinder 11. In the configuration shown in FIG. 3, the rail portion 20e is provided on the rail receiving portion 20f of the wall surface 20d, but may be provided on the rail receiving portion 20f provided on the upper surface portion 20c, for example.

  In addition, a traveling wheel 31 for moving on the rail portion 20e and a driving device 32 having a reduction gear and a driving device directly connected to the traveling wheel 31, for example, are provided at the end of the turning frame 30 on the wall surface 20d side. It has been. The driving device 32 is supported by a wheel shaft, and the driving device 32 and the turning frame 30 are coupled (not shown) so that the driving device 32 does not fall down due to a driving reaction force.

  The traveling wheel 31 is provided on the turning frame 30 so as to be able to roll by a driving device 32 while supporting a part of the load of the turning frame 30. Further, a winch 35 and a wire sheave 36 for winding the suspension wire 34 are provided on the upper part of the turning frame 30.

  The horizontal transfer device 40 is connected to a suspension wire 34 at a plurality of connection points 34 a and 34 b (see FIG. 4) while maintaining a horizontal state, and is suspended from the revolving frame 30 by the suspension wire 34. The swivel frame 30 supports the entire horizontal conveyance 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. 4, each of the connection points 34 a and 34 b described above is provided in two places in the lateral direction at two places 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 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 FIG. 4, the horizontal transport device 40, for example, passes along the virtual reference circle VRC in the cargo hold 20 via a turning roller unit 45 disposed around the center column 14 and the suspension wire 34. It is attached so that it can turn and move up and down. The horizontal conveyance device 40 is configured to convey and collect the cargo C in the cargo hold 20 by transporting the cargo C in the horizontal direction between the central portion (here, the center column 14) of the cargo hold 20 and the wall surface 20d. . 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 within the range of the virtual reference circle VRC from the central axis of the cargo hold 20 toward the wall surface 20d. The screw frame portion 48 is integrally joined to, for example, the turning roller unit 45 at a central axis side portion.

  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 horizontally conveying the cargo C in the cargo hold 20. Moreover, the screw frame part 48 equips the edge part by the side of the wall surface 20d with the drive machines 43 and 44 for driving the horizontal screws 41 and 42, for example.

  The driving machines 43 and 44 are further attached to screw shafts 41a and 42a, which will be described later, of the horizontal screws 41 and 42, respectively. By attaching the drive units 43 and 44 in this way, the screw frame portion 48 receives the overturn reaction force generated by the operation of the drive units 43 and 44 so that the drive units 43 and 44 do not fall over. ing.

  The screw frame portion 48 further excavates, crushes and scrapes the cargo C in the cargo hold 20 disposed on the leading side (front side) of the turning direction T in the vicinity of the wall surface 20d during unloading (collecting). A leading auxiliary horizontal screw portion 46 is provided. The leading auxiliary horizontal screw portion 46 excavates the cargo C existing between the inner surface of the virtual reference circle VRC and the wall surface 20d, which cannot be scraped off by the horizontal screw 42, particularly at the end of the horizontal screw 42 on the wall surface 20d side. It is provided so that it can be crushed.

  As shown in FIG. 5, each horizontal screw 41, 42 has, for example, screw shafts 41 a, 42 a arranged on the screw frame portion 48 so as to be parallel to each other along the radial direction. Each horizontal screw 41, 42 has screw blades 41b, 42b provided on the screw shafts 41a, 42a.

  Further, the horizontal screws 41 and 42 are provided adjacent to the bearing portions 61a, 61b, 61c, 62a, 62b, and 62c, and the bearing portions 61a and 62a, which are disposed on both ends of the screw shafts 41a and 42a and in the middle thereof. Drive units 43 and 44 respectively.

  Of the bearing portions of the horizontal screws 41 and 42, for example, the intermediate bearing portions 61 b and 62 b are overlapped on the circumference in the turning direction T of the horizontal screw 41 and 42 when the screw frame portion 48 is paid and shipped. They are provided at different positions in the radial direction so as to form a range that does not become necessary.

  Further, as shown in FIG. 7, among the horizontal screws 41 and 42, screw blades 42 b of a horizontal screw (hereinafter referred to as “subsequent screw”) 42 arranged on the subsequent side (rear side) in the turning direction T. The lower end position 72a of the outer periphery of the cargo hold is more than the lower end position 71a of the outer periphery of the screw blade 41b of the horizontal screw (hereinafter referred to as "preceding screw") 41 arranged on the preceding side (front side) of the turning direction T. 20 is formed so as to be positioned on the lower side in the vertical direction.

  In this case, the rotational axes of the screw shafts 41a and 42a of the preceding and succeeding screws (hereinafter collectively referred to as "each screw") 41 and 42 need not be arranged at the same level in the horizontal direction, For example, screw blades 41b and 42b having the same dimensions may be provided, and the lower end positions 71a and 72a may be configured as described above by shifting the level of the rotational axis.

  As a result, when the cargo C in the cargo hold 20 is unloaded and the horizontal transport device 40 turns in the turning direction T and is crushed or excavated (hereinafter referred to as “excavation”), the preceding screw For example, a cargo layer having a thickness corresponding to the depth Ha is excavated from the upper surface CS, which is a new excavation surface of the cargo C on the 41 side. Further, the trailing screw 42 side excavates a cargo layer having a thickness corresponding to the depth Hb from the lower end of the depth Ha.

  Accordingly, the horizontal transport device 40 is configured such that a cargo layer having a thickness corresponding to the physical total excavation depth Hd (Ha + Hb) can be transported in the horizontal direction by excavating from the upper surface CS of the cargo C by one excavation or the like. It has become. Each screw 41, 42 rotates in the opposite direction to each other as indicated by the arrow curve in the figure.

  As shown in FIGS. 4 and 5, the leading auxiliary horizontal screw portion 46 is attached to the moving frame 47 c movably arranged with respect to the screw frame portion 48 and the shaft center is extended. And a moving screw 47 provided so that the line substantially passes the center axis P of the center column 14.

  As shown in FIGS. 9 and 10, the moving screw 47 has a screw shaft 47a extending over the preceding auxiliary horizontal screw portion 46, and a predetermined length (in this example) from the end of the screw shaft 47a on the wall surface 20d side. Screw blade 47b provided in a range of about half the length). Further, as shown in FIG. 5, the leading auxiliary horizontal screw portion 46 includes bearing portions 47e and 47e 'that support at least two ends of the portion of the screw shaft 47a where the screw blades 47b are not formed.

  Further, as shown in FIG. 9, the leading auxiliary horizontal screw portion 46 includes a drive unit 47d that rotationally drives the moving screw 47 and a moving frame 47c along with the bearing portions 47e and 47e ′ along the axial direction of the moving screw 47. And a moving frame driving device 47f that is movably moved within a predetermined moving range NZ. The drive unit 47d is coupled to the moving frame 47c via a stay 47d 'so that the drive unit 47d does not fall due to a drive reaction force.

  The rail portion 47 g of the leading auxiliary horizontal screw portion 46 is configured in parallel with the axis of the moving screw 47 and is attached to the screw frame portion 48. A plurality of traveling wheels 47h and guide rollers 47i are attached to the moving frame 47c. The plurality of traveling wheels 47h are respectively disposed inside the rail portion 47g. The plurality of guide rollers 47i are respectively disposed at positions between the opposing rail portions 47g with a slight gap from the rail portion 47g.

  Two racks 47k are attached in parallel with the moving screw 47 on the upper surface side of the moving frame 47c.

  Two pinions 47l corresponding to these two racks 47k and a shaft 47m for driving them are provided via a bearing 47j fixed to the rail portion 47g. A moving frame driver 47f for driving the pinion 47l is attached to the shaft 47m. The moving frame driver 47f is coupled to the rail portion 47g by a connecting member 47n for receiving a driving reaction force.

  Since the leading auxiliary horizontal screw portion 46 is configured in this way, the moving screw 47 of the leading auxiliary horizontal screw portion 46 is moved in the axial direction of the moving screw 47 by operating the moving frame drive 47f. It can be moved within the range NZ.

  As shown in FIG. 4, the base point (zero point) in the position control of the moving screw 47 of the leading auxiliary horizontal screw portion 46 on the horizontal plane in the cargo hold 20 is on the virtual reference circle VRC and the wall surface 20d side of the moving screw 47. It is a position where an appropriate distance can be maintained between the ends. That is, this base point position means the position where the moving screw 47 is closest to the central axis P side. The moving screw 47 is controlled so that a base point position of the moving frame 47c is detected by a position sensor (not shown) provided on the screw frame portion 48 side and does not move to the central axis P side from the detected base point position.

  Further, a rotation sensor such as an encoder (not shown) is installed on the shaft 47m attached to the pinion 47l, and is configured to be able to detect the movement position of the moving screw 47 from the base point position toward the wall surface 20d. As shown in FIG. 5, the leading auxiliary horizontal screw portion 46 has an end portion on the central axis P side of the screw blade 47 b of the moving screw 47 on the wall surface of the screw blade 42 b of the subsequent screw 42 as shown in FIG. 5. It is comprised so that it may be located in the center axis P side rather than the edge part by the side of 20d.

  That is, the end portion on the central axis P side of the screw blade 47b of the moving screw 47 of the preceding auxiliary horizontal screw portion 46 is formed by turning the end portion on the wall surface 20d side of the screw blade 42b of the subsequent screw 42. From the circle VRC ′ (concentric with the virtual reference circle VRC), the base point position is located, for example, by the distance Lro on the central axis P side.

  This distance Lro is determined from the distance from the center axis P of the end portion of the screw blade 42b on the wall surface 20d side of the subsequent screw 42 to the end on the center axis P side of the screw blade 47b of the moving screw 47 of the preceding auxiliary horizontal screw portion 46. This represents a length obtained by subtracting the distance from the central axis P of the part, and is set to be at least equal to the required moving distance of the moving screw 47.

  Thus, at the base point position, the virtual reference circle VRC and the end portion that cannot be excavated by the subsequent screw 42 due to the bearing portion 62a or the drive unit 44 provided at the end portion on the wall surface 20d side of the screw blade 42b of the subsequent screw 42. The cargo C with the circle VRC ′ can be reliably excavated by the moving screw 47 of the preceding auxiliary horizontal screw portion 46.

  In addition, the horizontal conveyance apparatus 40 is provided with the distance sensor (not shown) which measures the distance from the fixed surface to the wall surface 20d at least three places on the turning surface of the screw frame part 48 continuously or simultaneously, for example. . The position of the screw frame 48 on the horizontal plane in the cargo hold 20 can be detected by monitoring the change of the detection signal accompanying the turning operation of the screw frame 48 from the distance sensor.

  Based on the detection result and the shape of the wall surface 20d at the vertical position of the cargo hold 20 at a previously determined measurement point, the horizontal transfer device 40 moves the leading auxiliary horizontal screw portion 46 from the base point position. The moving amount of the screw 47 can be predicted, and the moving amount of the moving screw 47 of the preceding auxiliary horizontal screw portion 46 can be controlled based on the prediction result.

  In addition, the preceding auxiliary horizontal screw portion 46 is provided with a safety device (not shown). For example, the distance between the end of the moving screw 47 on the wall surface 20d side and the wall surface 20d is predetermined by a distance sensor (not shown) that is mounted on the moving frame 47 and measures the distance from the wall surface 20d. When the distance is equal to or less than the distance and it is determined that the vehicle is abnormally approached, the moving frame 47c is moved to the base position and the turning operation of the turning frame 30 is stopped.

  FIG. 8 shows the physical positional relationship in the vertical direction of the cargo hold 20 between the screws 41 and 42 and the moving screw 47 when the moving screw 47 of the preceding auxiliary horizontal screw portion 46 is at the base point position described above. Yes. As shown in FIG. 8, the lower end position 73 a of the outer periphery of the screw blade 47 b of the moving screw 47 of the preceding auxiliary horizontal screw portion 46 is the lower end position 72 a of the outer periphery of the screw blade 42 b of the subsequent screw 42 and the screw of the preceding screw 41. It arrange | positions so that it may be located between the lower end positions 71a of the outer periphery of the blade | wing 41b.

  The moving screw 47 of the preceding auxiliary horizontal screw portion 46 rotates in the opposite direction to the preceding screw 41 and in the same direction as the succeeding screw 42 as indicated by the arrow curve in the figure. Since the screw blade 42b of the subsequent screw 42 does not exist between the end circle VRC ′ shown in FIG. 5 and the wall surface 20d, the moving screw 47 of the preceding auxiliary horizontal screw portion 46 is an upper surface CS that is a new excavation surface. The excavation of the cargo C, etc. is performed at the excavation depth Ha ′.

  However, if the cargo C corresponding to the depth Har ′, which the subsequent screw 42 is supposed to carry, is not excavated or the like, and the horizontal conveying device 40 goes around the cargo hold 20 once, it is placed on the upper surface CS which is a new excavation surface. A new layer corresponding to Har ′ remains. As a result, the leading auxiliary horizontal screw portion 46 excavates a new layer corresponding to the thickness Ha ′ + Har ′.

  The cargo C excavated by the moving screw 47 of the preceding auxiliary horizontal screw portion 46 is horizontally conveyed by the moving screw 47 toward the central axis P side of the cargo hold 20, and the preceding screw 41 and the succeeding screw 42 from the middle. , Horizontally conveyed to the center column 14.

  The moving screw 47 of the preceding auxiliary horizontal screw portion 46 configured in this way moves in the axial direction of the moving screw 47 within the moving range NZ in accordance with the shape of the wall surface 20d during lifting (loading) handling. In FIG. 5, the end on the central axis P side of the screw blade 47 b of the moving screw 47 extends from the base point position (position of distance Lro) to the position indicated by the distance Lrm from the end circle VRC ′, that is, the distance (Lro− Lrm) is moved to the wall surface 20d side.

  By controlling the amount of movement of the moving screw 47 as described above, the cargo C existing between the wall surface 20d and the virtual reference circle VRC is moved to the leading side in the cargo hold 20 having the wall surface 20d forming a polygonal cylinder. For example, excavation can be performed forcibly by the moving screw 47 of the auxiliary horizontal screw portion 46. This makes it possible to minimize the amount of cargo C remaining in the cargo hold 20 during unloading.

  In addition, by providing the leading auxiliary horizontal screw portion 46, even when the cargo C has a characteristic of being quasi-solidified in the cargo hold 20, a large amount of cargo C does not remain on the wall surface 20d side. It is possible to prevent the horizontal conveyance device 40 from being buried due to the collapse of the cargo C and the failure of the horizontal conveyance device 40 due to the dropped cargo C. Furthermore, since the cargo C can be forcibly excavated and transported horizontally toward the center of the cargo hold 20, the amount of payout per unit time can be controlled to be constant.

  In the present embodiment, the leading auxiliary horizontal screw portion 46 is installed in a state where the axis of the moving screw 47 overlaps the line passing through the center (central axis P) of the virtual reference circle VRC. Even if the leading auxiliary horizontal screw portion 46 is provided so that the screw shafts 41a, 42a of the pins 41, 42 and the shaft center are parallel to each other, for example, the same effects can be obtained.

  As described above, the horizontal screw silo 10 according to the present embodiment is made to minimize the cargo C remaining in the cargo hold 20 at the time of unloading. On the other hand, during loading, the moving frame 47c of the preceding auxiliary horizontal screw portion 46 is fixed at the base position (that is, the moving screw 47 is fixed at the base position), and the cargo into the cargo hold 20 is loaded. C is loaded.

  At this time, a slope with an angle of breath is formed around the upper surface CS of the loaded cargo C, and a space that is not filled with the cargo C remains in the cargo hold 20, but this space is very small, and is a virtual reference circle. These spaces are divided by the wall surface 20d in contact with the VRC. For this reason, even if the slope collapses, it does not cause damage to each device in the cargo hold 20 or serious movement of the center of mass of the horizontal screw silo.

  The screws 41 and 42 of the horizontal conveyance device 40 convey the cargo C in the horizontal direction between the central portion of the cargo hold 20 and the wall surface 20d, and perform spreading, dispersion, collection and collection. These are driven by the driving machines 43 and 44 so as to rotate in opposite directions. The screws 41 and 42 are configured such that, for example, the cargo C moves to the 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 conveyance device 40 by free fall of the cargo C, and is configured to expand and contract as the horizontal conveyance device 40 moves up and down. Has been. 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 preceding and succeeding 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. Although not shown, the unloading facility is configured to include a horizontal transfer device provided on the upper deck 5, a connection transfer device 8a (see FIG. 1) connected to the land-side load handling facility, and the like. The

  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 a distribution device 8c connected to a connection conveying device 8b and the other end is a horizontal screw silo. A supply device 9 connected to ten cargo supply ports 11b is provided. The cargo C conveyed from the cargo handling facility to the land side 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 a conveying device such as a horizontal screw conveyor, a belt conveyor, or a bucket conveyor.

  Here, cargo handling using the horizontal screw silo 10 will be described. The cargo handling unit loads cargo C into the cargo hold 20 via the land-side cargo handling facility, the connection transport device 8b, the distribution device 8c, the supply device 9, the horizontal screw conveyor 12, the telescopic chute 13, and the horizontal transport device 40. It is a cargo handling to accommodate.

  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.

  In the horizontal transport device 40, the cargo C transported to the horizontal transport device 40 is transported horizontally from the center column 14 side to the wall surface 20d side of the horizontal transport device 40, for example, by forwardly rotating the preceding and succeeding screws 41 and 42. It is comprised so that. 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. Further, the moving screw 47 of the leading auxiliary horizontal screw portion 46 provided in the horizontal conveying device 40 is fixed at the base position as described above.

  The cargo C transported to the horizontal transport device 40 in such a state is transported horizontally, in the vicinity of the screws 41, 42, in the space below, from the center column 14 side toward the wall surface 20d side. 40 are sequentially accommodated. 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 turning frame 30 is turned by a predetermined angle, and the horizontal transport device 40 is moved in the circumferential direction along the virtual reference circle VRC (at the time of loading / unloading). It is moved in the turning direction T ′, see the arrow in FIG. 4, and the cargo C is evenly accommodated in a zone in the centrifugal direction.

  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 along the virtual reference circle VRC of the cargo hold 20 by such turning of the horizontal conveyance device 40.

  Then, after the leveling and accommodation of the cargo C for one round in the polygonal cylindrical cargo hold 20 is completed, the suspension wire 34 that suspends the horizontal conveying device 40 is wound up by the winch 35 of the swivel frame 30, and the horizontal The height of the conveying 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 the cargo handling which unloads to the land side cargo handling equipment via the connection conveyance apparatus 8a.

  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 turning frame 30 is drawn out by the winch 35, The horizontal conveyance 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 the height is mounted.

  Next, the revolving frame 30 is revolved at a predetermined revolving speed, and the moving frame 47c of the preceding auxiliary horizontal screw portion 46 is appropriately moved while revolving the horizontal transfer device 40 in the revolving direction T opposite to that when loading. By rotating the screws 41 and 42 while changing the position of the moving screw 47 as described above, the cargo C is horizontally conveyed while being scraped from the wall surface 20d side of the horizontal conveying device 40 to the center column 14 side. . 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 below 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 such turning of the horizontal conveying device 40. Note that the amount of unloading per hour can be controlled by controlling the turning speed of the turning frame 30 or the like.

  Then, when the collection of the cargo C for one round in the polygonal cylindrical cargo hold 20 is completed, the hanging wire 34 that suspends the horizontal conveyance device 40 from the revolving frame 30 is fed out, and the height of the horizontal conveyance device 40 is increased. Decrease 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.

  Cargo C in cargo hold 20 including the vicinity of wall surface 20d is obtained by repeating such processing and collecting cargo C from the top surface CS of cargo C in the cargo hold 20 to the position directly above the bottom surface portion 10b. Are collected in the center column 14 to be in an empty state. 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.

  As described above, in the horizontal screw silo 10 according to the first embodiment of the present invention, the moving screw 47 of the leading auxiliary horizontal screw portion 46 provided in the horizontal conveying device 40 is horizontally conveyed around the central axis P. It moves corresponding to the change in the distance between the wall surface 20d and the virtual reference circle VRC as the device 40 turns, and the cargo C on the wall surface 20d side that is not excavated by the subsequent screw 42 is excavated and conveyed horizontally. To do.

  As a result, the preceding auxiliary horizontal screw portion 46 covers the range in which the cargo C cannot be excavated by the subsequent screw 42, and is loaded in the polygonal cylindrical cargo hold 20 and is quasi-solidified especially on the wall surface 20d side. Even if it exists, it can be reliably excavated and crushed and horizontally transported by the horizontal transport device 40. For this reason, there is no scraping and it becomes possible to perform the stable unloading work by the horizontal conveyance apparatus 40.

[Second Embodiment]
FIG. 11 is an enlarged top view of a part of a horizontal screw silo according to the second embodiment of the present invention. FIG. 12 is a simplified top view of a part of the horizontal screw silo. Furthermore, FIG. 13 is an FF ′ enlarged cross-sectional view of FIG. In addition, the same code | symbol is attached | subjected to the location which overlaps with the already demonstrated part, and description is omitted. The horizontal screw silo according to the second embodiment is a combination of the horizontal conveying device 40 of the horizontal screw silo according to the first embodiment and another configuration.

  That is, as shown in FIGS. 11 to 13, the horizontal conveyance device 40 </ b> A is arranged along with the preceding auxiliary auxiliary horizontal screw portion 46 on the rear side auxiliary horizontal disposed on the rear side in the turning direction T when the screw frame portion 48 is unloaded. The point provided with the screw part 50 is different from the horizontal conveyance apparatus 40 which concerns on 1st Embodiment.

  In the present embodiment, the leading auxiliary horizontal screw portion 46 has a wall surface of the screw blade 41b of the preceding screw 41 at the end on the central axis P side of the screw blade 47b of the moving screw 47 within the moving range NZ. It is comprised so that it may be located in the center axis P side rather than the edge part by the side of 20d. Further, in the leading auxiliary horizontal screw portion 46, the lower end position 73a of the outer periphery of the screw blade 47b of the moving screw 47 is substantially the same as the lower end position 71a of the outer periphery of the screw blade 41b of the preceding screw 41 in the vertical direction of the cargo hold 20. It arrange | positions so that it may become a position.

  The subsequent auxiliary horizontal screw portion 50 has the same configuration as the preceding auxiliary horizontal screw portion 46. The rear side auxiliary horizontal screw part 50 is attached to the moving frame 51c, which is arranged so as to be movable with respect to the screw frame part 48, and the extension line of the shaft center extends the central axis P of the center column 14. And a moving screw 51 provided so as to pass substantially through.

  Further, the rear side auxiliary horizontal screw part 50 includes bearing parts 51e and 51e ', a driving machine 51d, and a moving frame driving machine 51f. About the attachment structure etc. with the other screw frame part 48, it is the same as that of the front side auxiliary | assistant horizontal screw part 46.

  The rear side auxiliary horizontal screw part 50 is configured as described above, and the moving frame driver 51f is operated, thereby moving the moving screw 51 of the rear side auxiliary horizontal screw part 50 in the axial direction of the moving screw 51. It is possible to move within a movement range NZ ′ (not shown) equivalent to the movement range NZ.

  In the movement range NZ ′, the subsequent auxiliary horizontal screw portion 50 has an end portion on the central axis P side of the screw blade 51b of the moving screw 51 that is closer to the wall surface 20d side end portion of the screw blade 42b of the subsequent screw 42. , And is configured to be located on the central axis P side. In the subsequent auxiliary horizontal screw portion 50, the lower end position 74a of the outer periphery of the screw blade 51b of the moving screw 51 is substantially the same position in the vertical direction of the cargo hold 20 as the lower end position 72a of the outer periphery of the screw blade 42b of the subsequent screw 42. Are arranged as follows.

  In FIG. 12, the end circle VRC ″ formed by turning the end of the screw blade 41b of the preceding screw 41 on the wall surface 20d side is the end of the screw blade 42b of the subsequent screw 42 on the wall 20d side. An example in which a circle having a slightly smaller diameter than the end circle VRC ′ formed by turning the portion is shown is shown. The diameter of the end circle VRC ″ and the diameter of the end circle VRC ′ are The diameter of the end circle VRC ″ and the diameter of the end circle VRC ′ are equal to each other, depending on the dimensions of the drive units 43 and 44 and the bearing portions 61a and 62a, the maintenance space, and the like. In some cases, the diameter of the end circle VRC ″ may be larger than the diameter of the end circle VRC ′.

  The moving screw 51 of the succeeding side auxiliary horizontal screw part 50 rotates in the same direction as the preceding screw 41 in the direction opposite to the succeeding screw 42 as shown by the arrow curve in FIG. Since the screw blades 41b and 42b of the screws 41 and 42 do not exist in the vicinity of the virtual reference circle VRC, the moving screw 47 of the leading auxiliary horizontal screw portion 46 is excavated with reference to the upper surface CS which is a new excavation surface. Excavation is performed on the cargo C corresponding to the depth Ha and the crushed thickness Br corresponding to the crushed thickness Br that has been excavated and left behind by the moving screw 51 of the auxiliary auxiliary horizontal screw portion 50. Then, the excavated cargo C is horizontally transported to the central portion side of the cargo hold 20, taken over by the preceding screw 41 on the way, and horizontally transported to the center column 14 side.

  On the other hand, the moving screw 51 of the subsequent auxiliary horizontal screw portion 50 excavates the cargo C corresponding to the excavation depth Hb from the excavation surface CS ′ after excavation by the moving screw 47 of the preceding auxiliary horizontal screw portion 46. Then, while leaving a part of the excavated cargo C in the vicinity of the wall surface 20d, it is left behind after being horizontally transported to the end on the central axis P side of the moving screw blade 51b.

  The left-over cargo C is moved together with the newly excavated cargo C and the like by the moving screw 47 and the preceding screw 41 of the preceding auxiliary horizontal screw portion 46 when the horizontal conveying device 40A makes one round in the cargo hold 20. Excavated and transported horizontally to the center of the cargo hold 20. As shown in FIG. 12, the leading and trailing auxiliary horizontal screw portions 46 and 50 are individually controlled.

  Therefore, also in the horizontal screw silo according to the present embodiment, the cargo C in the polygonal cylindrical cargo hold 20 can be forcibly excavated, and in particular, the characteristic that the cargo C is pseudo-solidified in the cargo hold 20 is provided. Even in the case of having the cargo C, the cargo C remaining in the cargo hold 20 can be stopped to a minimum, and a stable unloading operation becomes possible. Advantages compared to the horizontal conveyance device 40 according to the first embodiment are as follows.

  That is, (1) when comparing the excavation depth of the moving screw 47 of the leading auxiliary horizontal screw portion 46, it is about half that of the first embodiment, so the load of the moving screw 47 is shared by the moving screw 51. Can be reduced. Further, (2) a plurality of auxiliary horizontal screw portions are arranged at the front and rear positions in the turning direction T of the screw frame portion 48, and the rotation direction of each moving screw is opposite, so that the screw frame portion 48 is turned. The power is offset. Accordingly, the horizontal transfer device 40A can be stably turned.

  In the above-described embodiment, the case where the cargo hold 20 has an octagonal cylindrical shape has been described as a preferable example. However, the cylindrical shape in the present invention includes a polygonal cylindrical shape, an elliptical cylindrical shape, a long cylindrical shape, and a cargo hold. It includes a cylindrical shape in which these cylindrical shapes are smoothly connected in the vertical direction. Moreover, the center part (position of a central axis) of the cargo hold 20 in the present invention indicates a circle inside the cargo hold 20 and indicates the center of this virtual circle. And a preferable center position is as follows, for example.

  That is, (a) in the case of a polygonal cylinder having opposite sides parallel to each other, the intersection of lines connecting each side and the midpoint of the opposite side is set as the center of the cargo hold 20. When the shape of the cargo hold 20 is other than the above (a), a circle having the maximum diameter that is inscribed in at least two locations on the cylindrical wall surface and does not intersect with the wall surface is virtually assumed, and the center of this virtual circle is defined as the cargo hold. The center of 20 is assumed. 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 carrier 10 Horizontal screw type silo 11 Rotating cylinder 12 Horizontal screw conveyor 13 Telescopic chute 14 Center column 20 Cargo hold 30 Rotating frame 34 Hanging wire 40 Horizontal conveyance device 41, 42 Horizontal screw 43, 44 Drive machine 45 Rotating roller unit 46 Leading auxiliary horizontal screw part 48 Screw frame part

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 center column that is fixedly arranged to extend in the vertical direction at the center of the cargo hold, and is configured to be movable below the cargo hold when the cargo falls,
A swivel frame that is disposed at an upper position inside the cargo hold and is pivotally driven with a center axis of a virtual reference circle that is virtually formed in the internal space of the cargo hold as a turning axis, and a tip frame that extends 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 through the center column,
The horizontal transfer device is:
A screw frame portion extending from the central axis toward the wall surface;
A plurality of horizontal screws that are supported by the screw frame portion so as to be parallel to each other at intervals in a turning direction, and transport the cargo in a horizontal direction;
An auxiliary horizontal screw portion that is disposed in the vicinity of the wall surface of the screw frame portion and scrapes cargo stored in the cargo hold;
The auxiliary horizontal screw part is
A moving frame arranged movably with respect to the screw frame part;
A moving screw attached to the moving frame via a plurality of bearings supporting at least two locations;
It is arranged movably within a predetermined movement range along the axial direction of the moving screw, and is arranged on the front side in the turning direction at the time of the loading of the screw frame part,
The screw blade of the moving screw has a lower end position on the outer periphery thereof, a substantially lower end position on the outer periphery of the screw blade of the horizontal screw disposed on the subsequent side in the turning direction at the time of the collection in the vertical direction of the cargo hold, and the leading side. The center screw side end portion of the horizontal screw screw blade of the horizontal screw disposed on the subsequent side is formed so as to be positioned between the lower end of the outer periphery of the screw blade of the horizontal screw disposed on It is formed so as to be located on the central axis side within the movement range from the end on the wall surface side,
The horizontal screw silo characterized in that the rotational direction of the moving screw of the auxiliary horizontal screw portion is set in the same direction as the rotational direction of the horizontal screw disposed on the subsequent side . 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 center column that is fixedly arranged to extend in the vertical direction at the center of the cargo hold, and is configured to be movable below the cargo hold when the cargo falls,
A swivel frame that is disposed at an upper position inside the cargo hold and is pivotally driven with a center axis of a virtual reference circle that is virtually formed in the internal space of the cargo hold as a turning axis, and a tip frame that extends 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 through the center column,
The horizontal transfer device is:
A screw frame portion extending from the central axis toward the wall surface;
A plurality of horizontal screws that are supported by the screw frame portion so as to be parallel to each other at intervals in a turning direction, and transport the cargo in a horizontal direction;
An auxiliary horizontal screw portion that is disposed in the vicinity of the wall surface of the screw frame portion and scrapes cargo stored in the cargo hold;
The auxiliary horizontal screw part is
A moving frame arranged movably with respect to the screw frame part;
A moving screw attached to the moving frame via a plurality of bearings supporting at least two locations;
It is arranged movably within a predetermined movement range along the axial direction of the moving screw, and is respectively arranged on the front side and the rear side in the turning direction of the screw frame portion during the collection,
The auxiliary horizontal screw part arranged on the front side,
The lower end position in the vertical direction of the cargo hold on the outer periphery of the screw blade of the moving screw is a position that substantially coincides with the lower end position on the outer periphery of the screw blade of the horizontal screw arranged on the preceding side in the turning direction at the time of the pickup. And the end portion on the central axis side is positioned closer to the central axis side in the movement range than the end portion on the wall surface side of the screw blade of the horizontal screw disposed on the preceding side. And the rotational direction of the moving screw is set in the opposite direction to the rotational direction of the horizontal screw disposed on the preceding side,
The auxiliary horizontal screw part arranged on the rear side is,
The lower end position in the vertical direction of the cargo hold at the outer periphery of the screw blade of the moving screw is a position that substantially coincides with the lower end position of the outer periphery of the screw blade of the horizontal screw arranged on the subsequent side in the turning direction at the time of the pickup. And the end portion on the central axis side is positioned closer to the central axis side in the movement range than the end portion on the wall surface side of the screw blade of the horizontal screw disposed on the subsequent side. The horizontal screw silo is characterized in that the rotational direction of the moving screw is set to be opposite to the rotational direction of the horizontal screw disposed on the subsequent side . Each of the plurality of horizontal screws includes a screw shaft disposed in the screw frame portion,
A screw blade provided on the screw shaft;
A plurality of bearing portions disposed on the screw frame portion and supporting at least both ends of the screw shaft;
The lower end position of the outer periphery of the screw blade of the horizontal screw disposed on the subsequent side in the swiveling direction at the time of the collection is higher in the vertical direction of the cargo hold than the lower end position of the outer periphery of the screw blade of the horizontal screw disposed on the preceding side. The horizontal screw silo according to claim 1 or 2 , wherein the horizontal screw silo is formed so as to be positioned on a lower side. 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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