JP2014028675A - Horizontal screw silo - Google Patents

Abstract

There is provided a horizontal transfer device having a small horizontal resistance for a horizontal conveyance resistance of a cargo in a cargo hold and a turning operation, and performs a stable payment and shipping combination.
A horizontal screw silo is provided with a horizontal transfer device. The bearing portions 61a and 62a and the bearing portions 61b and 62b are provided at positions where the horizontal screws 41 and 42 form a range that does not overlap with the circumference in the turning direction T at the time of paying and shipping. The lower end position 72 a on the outer periphery of the screw blade 42 b of the horizontal screw 42 is positioned below the lower end position 71 a on the outer periphery of the screw blade 41 b of the horizontal screw 41. In the horizontal screw 41, the screw blade 41b provided in a range overlapping with the bearing portions 62a and 62b of the horizontal screw 42 has a lower end position 71b of the outer periphery substantially the same as a lower end position 72a of the outer periphery of the screw blade 42b of the horizontal screw 42. The blade diameter is increased to be positioned on the horizontal plane F.
[Selection] Figure 5

Description

  The present invention relates to a horizontal screw silo for loading cargo such as powder, fine particles, lumps or pellets, and high moisture content.

  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 a cylindrical cargo hold, and it is possible to load cargo 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.

  That is, when the cargo is quasi-solidified, it is expected that the horizontal screw will not scrape the cargo well and the turning resistance of the horizontal transport device will increase. In addition, when the length of the cargo hold in the radial direction is long, a structure in which the screw shaft of the horizontal screw is divided by the bearing portion in the middle is adopted, but in this case, the cargo cannot be scraped off at the bearing portion. Therefore, it is expected that the horizontal conveyance resistance of the cargo by the horizontal screw will increase.

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

  It is an object of the present invention to provide a horizontal screw silo that has a horizontal conveyance device that has a low horizontal resistance and a horizontal resistance that accompanies a rotational movement of cargo in a cargo hold, and that can perform a stable payment and shipping.

  The horizontal screw 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 vertical center at the center of the cargo hold. A center column that is fixedly arranged so as to extend in a direction, and is configured to be movable below the cargo hold when the cargo falls, and a central axis of the cylindrical wall surface that is arranged at an upper position inside the cargo hold And a swivel frame that is pivotally driven with the tip extending in the radial direction to the cylindrical wall surface and supported so as to be movable along the cylindrical wall surface, and a suspension wire is disposed on the swivel frame with the central axis as the swivel axis. The swivel frame is swung to follow the swivel motion of the swivel frame, and is moved up and down by the hoisting or unwinding motion of the hanging wire to move the cargo forward. A screw-type horizontal conveying device that horizontally conveys and collects and collects the cargo between the center of the cargo hold and the cylindrical wall surface, and the cargo collected by the horizontal conveying device passes through the center column. In the horizontal screw silo that discharges to the outside of the cargo hold, the horizontal conveying device includes a screw frame portion that extends in a radial direction from the central axis toward the cylindrical wall surface, and an interval in the swiveling direction between the screw frame portion. A plurality of horizontal screws that are supported so as to be parallel to each other and transport the cargo in the horizontal direction, and are arranged on the leading side in the turning direction in the vicinity of the cylindrical wall surface of the screw frame portion, A scraping member for scraping the stored cargo, and each of the plurality of horizontal screws includes the screw frame portion. A radially extending screw shaft, screw blades provided on the screw shaft, and a plurality of bearing portions disposed on the screw frame portion and supporting at least both ends of the screw shaft, A bearing portion arranged at least in the vicinity of the cylindrical wall surface of the plurality of bearing portions is provided at a position where the one horizontal screw and the other horizontal screw are different in the radial direction, and the subsequent side in the turning direction at the time of the pickup The lower end position of the outer periphery of the screw blade of the horizontal screw disposed on the lower side of the outer periphery of the outer periphery of the screw blade of the horizontal screw disposed on the preceding side is located below the cargo hold, and The horizontal screw arranged on the leading side is a screw blade provided in a range overlapping the bearing portion of the horizontal screw arranged on the trailing side. The root is formed so that the lower end position of the outer periphery thereof is located on substantially the same horizontal plane as the lower end position of the outer periphery of the screw blade of the horizontal screw disposed on the subsequent side.

  In one embodiment of the present invention, a protrusion is provided at the tip of a screw blade provided in a range where the horizontal screw arranged on the leading side overlaps with a bearing portion of the horizontal screw arranged on the trailing side. The screw blades are formed so that the lower end position of the outer periphery including the protrusion is substantially on the same horizontal plane as the lower end position of the outer periphery of the screw blade of the horizontal screw disposed on the subsequent side.

  In another embodiment of the present invention, the screw blade provided in a range where the horizontal screw arranged on the subsequent side overlaps the bearing portion of the horizontal screw arranged on the preceding side has a lower end position on the outer periphery thereof. The lower end position of the outer periphery of the screw blade of the horizontal screw disposed on the subsequent side by a distance substantially equal to the difference distance between the lower end position of the outer periphery of the screw blade of the horizontal screw disposed on the preceding side and the surface position of the cargo. It is formed so as to be located on the lower side.

  In still another embodiment of the present invention, a projection is provided at the tip of a screw blade provided in a range where the horizontal screw disposed on the subsequent side overlaps with a bearing portion of the horizontal screw disposed on the preceding side. The screw blade is provided at a distance approximately equal to the difference distance between the lower end position of the outer periphery of the screw blade of the horizontal screw and the surface position of the cargo. The horizontal screw disposed on the subsequent side is formed so as to be positioned below the lower end position of the outer periphery of the screw blade of the horizontal screw.

  In still another embodiment of the present invention, the scraping member is a scraper.

  Another horizontal screw silo according to the present invention includes a cargo hold having a cargo supply port at an upper portion thereof and a cylindrical wall surface inside which accommodates a powdery, granular, lump or pellet-like cargo, and a center of the cargo hold. A center column which is fixedly arranged so as to extend in the vertical direction, and is configured to be movable below the cargo hold when the cargo falls, and is disposed at an upper position inside the cargo hold to A pivot frame that is pivotally driven with a central axis as a pivot axis, a tip end extending radially to the cylindrical wall surface and supported so as to be movable along the cylindrical wall surface, and a suspension frame that is suspended from the pivot axis with the central axis as a pivot axis The cargo is suspended through a wire and moved in accordance with the turning operation of the turning frame, and moved up and down by the lifting or unwinding operation of the hanging wire. A screw-type horizontal conveying device that horizontally conveys and collects and collects the cargo between the central part of the cargo hold and the cylindrical wall surface, and the center column removes the cargo collected by the horizontal conveying device. In the horizontal screw silo that discharges to the outside of the cargo hold through, the horizontal conveying device includes a screw frame portion that extends in a radial direction from the central axis toward the cylindrical wall surface, and a spacing in the swivel direction to the screw frame portion. A plurality of horizontal screws that are supported in parallel with each other and transport the cargo in the horizontal direction, and are arranged on the preceding side in the swiveling direction in the vicinity of the cylindrical wall surface of the screw frame portion, and the cargo hold And an auxiliary horizontal screw that scrapes off the cargo stored in the container.

  In one embodiment of the present invention, each of the plurality of horizontal screws is disposed in the screw frame portion, the screw shaft extending in the radial direction, the screw blade provided in the screw shaft, and the screw frame portion. A plurality of bearing portions that support at least both ends of the screw shaft, and the bearing portion disposed at least in the vicinity of the cylindrical wall surface of the plurality of bearing portions includes one horizontal screw and the other. The lower end position of the outer periphery of the screw blade of the horizontal screw that is provided at a position that is different in the radial direction from the horizontal screw and that is disposed on the subsequent side in the swiveling direction at the time of collection is It is formed so as to be located below the cargo hold with respect to the lower end position of the outer periphery.

  ADVANTAGE OF THE INVENTION According to this invention, it has a horizontal conveyance apparatus with a small turning resistance accompanying the horizontal conveyance resistance and turning operation | movement of the cargo in a cargo hold, and can perform a stable payment and shipping combination.

It is sectional drawing which shows the horizontal screw type silo which concerns on the 1st Embodiment of this invention. FIG. 2 is an enlarged top view of B-B ′ of FIG. 1. It is a B-B 'simplified top view of FIG. FIG. 4 is an enlarged cross-sectional view of FIG. 3 taken along C-C ′. FIG. 4 is an enlarged sectional view taken along the line D-D ′ in FIG. 3. It is a figure which shows the other aspect of FIG. It is a simple top view which shows a partial structure of the horizontal conveying apparatus of the horizontal screw type silo which concerns on the 2nd Embodiment of this invention. It is F-F 'expanded sectional drawing of FIG. It is G-G 'expanded sectional drawing of FIG. It is J-J 'expanded sectional drawing of FIG. It is sectional drawing which shows the horizontal screw type silo which concerns on the 3rd Embodiment of this invention. It is H-H 'expanded top view of FIG. It is H-H 'simplified top view of FIG. It is I-I 'expanded sectional drawing of FIG.

  Hereinafter, a horizontal screw silo according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[First Embodiment]
FIG. 1 is a cross-sectional view showing a horizontal screw silo according to a first embodiment of the present invention. 2 is an enlarged top view of BB ′ of FIG. 1, and FIG. 3 is a simplified top view of BB ′ of FIG. 4 is an enlarged sectional view taken along line CC ′ of FIG. 3, FIG. 5 is an enlarged sectional view taken along line DD ′ of FIG. 3, and FIG. 6 is a diagram showing another embodiment of FIG. As shown in FIGS. 1 and 2, the horizontal screw silo 10 is a silo capable of loading cargo C having a property of quasi-solidifying such as powder, fine particles, lumps, pellets, and high moisture content, It is formed in a cylindrical shape.

  As shown in FIG. 1, the horizontal screw silo 10 includes a cylindrical cargo hold 20. 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. At the upper position inside the cargo hold 20, there is provided a turning frame 30 that turns together with the turning 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 by controlling the amount of suspension from the revolving frame 30 according to the height of the upper surface of the cargo C, and revolves with the revolving frame 30.

  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 conveyance device 40 spreads the cargo C uniformly in the 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 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). The horizontal screw silo 10 can be mounted on a cargo carrier (not shown) or incorporated as a part of the hull.

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. A rail portion 20e is provided along the cylindrical wall surface 20d on the upper surface of the rail receiving portion 20f. The revolving frame 30 is supported at the center by the revolving cylinder 11, and the end on the cylindrical wall surface 20d side is supported by the rail portion 20e of the cylindrical wall surface 20d. The swivel frame 30 is swiveled together with the swivel cylinder 11. In the configuration shown in FIG. 1, the rail portion 20e is provided on the rail receiving portion 20f of the cylindrical wall surface 20d, but may be provided on the rail receiving portion 20f provided on the upper surface portion 20c, for example.

  Further, at the end of the turning frame 30 on the cylindrical wall surface 20d side, there is a traveling wheel 31 for moving on the rail portion 20e, for example, a driving device 32 having a reduction gear and a driving device directly connected to the traveling wheel 31. Is provided. The driving device 32 is supported by a wheel shaft, and the driving device 32 and the turning frame 30 are directly connected (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. In addition, a winch 35 and a wire sheave 36 for winding the suspension wire 34 are provided on the upper part of the revolving frame 30.

  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. 2) while maintaining a horizontal state on the revolving frame 30, and is suspended 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.

  However, in this case as well, since the crushing layer left behind has already been crushed, the horizontal conveying device 40 makes one round as in the case shown in FIG. This cargo C can also be easily horizontally transported by the horizontal transport device 40.

  As shown in FIG. 2, the horizontal transport device 40 is attached so as to be able to turn and move 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 screw shafts 41a and 42a, which will be described later, of the horizontal screws 41 and 42, respectively. 48 is received, and it is comprised so that the drive machines 43 and 44 may not fall. Further, the screw frame portion 48 includes a scraper 46 that scrapes off the cargo C in the cargo hold 20 and is disposed on the leading side (front side) in the turning direction T in the vicinity of the cylindrical wall surface 20d in the paying and shipping combination (collecting). . The scraper 46 has a lower end in contact with the cargo C and a front surface on the turning direction T side formed in a sawtooth shape or a flea tooth shape.

  As shown in FIG. 3, the horizontal screws 41 and 42 are provided on, for example, screw shafts 41 a and 42 a and screw shafts 41 a and 42 a that are arranged on the screw frame portion 48 so as to be parallel to each other along the radial direction. The screw blades 41b, 42b, the bearings 61a, 61b, 61c, 62a, 62b, 62c disposed on both ends of the screw shafts 41a, 42a and the middle thereof, and the bearings 61a, 62a are provided adjacent to each other. It has drive machines 43 and 44, respectively. In addition, the bearing part in this invention points out the part only of a bearing, and the part containing a bearing and a drive machine, and after that, the bearing parts 61a and 62a include the drive machines 43 and 44. To do.

  Of the bearing portions of the horizontal screws 41 and 42, the bearing portions 61 a, 61 b, 62 a and 62 b except for the bearing portions 61 c and 62 c disposed in the vicinity of the center column 14 are screw frames in the horizontal screws 41 and 42. The portions 48 are provided at different positions in the radial direction so as to form a range that does not overlap on the circumference in the turning direction T when the part 48 is paid and shipped.

  As shown in FIG. 4, among the horizontal screws 41, 42, screw blades 42 b of a horizontal screw (hereinafter referred to as “following 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. It is formed so as to be positioned below 20.

  In this case, the rotation shaft centers of the screw shafts 41a and 42a of the screws 41 and 42 do not have to be arranged at the same level in the horizontal direction. For example, the screw shafts 41b and 42b having the same dimensions are provided. The lower end positions 71a and 72a may be configured to have the relationship as described above.

  As a result, when the horizontal transfer device 40 turns in the turning direction T and performs crushing or excavation (hereinafter referred to as “excavation”) for the cargo C in the cargo hold 20 during the payment and shipping operation, the preceding screw The 41 side excavates a cargo layer having a thickness corresponding to the depth Ad from the upper surface CS of the cargo C, and the subsequent screw 42 side excavates a cargo layer having a thickness corresponding to the depth Bd from the lower end of the depth Ad. be able to. Accordingly, the horizontal transport device 40 is configured to be able to transport a cargo layer having a thickness corresponding to the depth Ad + Bd from the upper surface CS of the cargo C in the horizontal direction by excavation at one time.

  As shown in FIG. 5, the leading screw 41 includes, for example, a screw blade 41 b provided in a range overlapping with the bearing portions 62 a and 62 b of the subsequent screw 42, and a lower end position 71 b of the outer periphery thereof is a screw blade 42 b of the subsequent screw 42. For example, the blade diameter is increased so as to be positioned on the same horizontal plane F as the lower end position 72a of the outer periphery of the outer periphery. That is, the lower end position 71b is located on the lower side of the cargo hold 20 with respect to the lower end position 71a on the outer periphery of the screw blade 41b in a range not overlapping with the bearing portions 62a and 62b.

  As a result, the cargo C in a range where it cannot be crushed or excavated by the subsequent screw 42 in which the bearing portions 62a and 62b are arranged can be excavated in advance by the preceding screw 41. It is possible to prevent the quasi-solidified cargo C that is not crushed or excavated from existing in any of 41 and 42.

  For example, on the bearing portion 62a side, the cargo C cannot be excavated by the subsequent screw 42, but since the preceding screw 41 performs the excavation, a part of the excavated cargo C is horizontally conveyed by the screws 41 and 42, The rest will remain on the upper surface CS as a crushed layer corresponding to the thickness Cr. However, when the horizontal conveying device 40 goes around the cargo hold 20, the crushed layer has already been crushed, so it is easily scraped by the scraper 46 from the cylindrical wall surface 20 d side and is easily horizontally conveyed by the preceding screw 41. It becomes possible.

  On the bearing portion 62b side, the cargo C that is not excavated by the subsequent screw 42 remains in a convex shape, but since that portion has already been excavated by the preceding screw 41, the cargo C is horizontally conveyed by the subsequent screw 42. In this case, the horizontal conveyance resistance is smaller than that in the case where there is a cargo C that has been quasi-solidified without being excavated.

  Further, since there is no screw blade 42b in the range of the bearing portion 62a, a part of the cargo C is left behind, but when the horizontal conveying device 40 goes around the cargo hold 20, a layer to be newly excavated (new layer) ) And the front screw 41 are horizontally conveyed to the center side of the cargo hold 20, so that the height from the upper surface CS of the convex portion does not increase sequentially.

  Therefore, in the horizontal conveyance device 40 of this example, when collecting the quasi-solidified cargo C in the cargo hold 20, the horizontal conveyance resistance of the cargo C is reduced, and the turning resistance associated with the turning operation of the screw frame portion 48 is reduced. Since it can be made small, stable cargo handling can be performed.

  Instead of increasing the blade diameter of the screw blade 41b of the preceding screw 41 as described above, a protrusion 41c is provided at the tip of the screw blade 41b as shown in FIG. You may form so that the lower end position 71b may be located on the horizontal surface F substantially the same as the lower end position 72a of the outer periphery of the screw blade 42b of the subsequent screw 42.

  By configuring in this way, most of the quasi-solidified cargo C that comes into contact with the protrusion 41c remains as a crushed layer corresponding to the depth Br without being horizontally transported, and the screw blade 41b of the preceding screw 41 Together with the remaining portion of the excavated cargo C corresponding to the depth Ar, the crushed layer having a thickness corresponding to Ar + Br is left behind.

  As shown in FIG. 2, each of the connection points 34 a and 34 b is provided at two locations in the lateral 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.

  The screws 41 and 42 of the horizontal conveyance 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 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 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.

  Further, as shown in FIG. 1, as a payment / shipping facility outside the horizontal screw silo 10, a discharge conveyor 18 that performs horizontal conveyance is provided with one end side disposed below the discharge port 29 of the center column 14. Although not shown in the drawings, the paying / shipping facility includes an upward conveying device connected to the discharge conveyor 18 and a connecting conveying device connected to other cargo handling facilities.

  The discharge conveyor 18 is configured by, for example, a screw conveyor or a belt conveyor. The connection transport device is a device that transports the cargo C transported by, for example, the discharge conveyor 18 and the upward transport device to another cargo handling facility via the connection portion. On the other hand, although the loading and unloading equipment outside the horizontal screw silo 10 is not shown or described in detail, the cargo C transported from other loading equipment is appropriately supplied to the horizontal screw silo 10.

  Here, cargo handling using the horizontal screw silo 10 will be described. The cargo handling is performed by loading the cargo C into other cargo handling equipment, a transport device for connection, a transport device to the horizontal screw silo 10, a cargo supply port 11b, a supply chute 11c, a horizontal screw conveyor 12, a telescopic chute 13, and a horizontal transport device 40. It is a cargo handling to be accommodated in the cargo hold 20 via.

  That is, first, cargo C transported from another cargo handling facility is supplied to the upper part of the cargo hold 20 of the horizontal screw silo 10 via a connecting transport device or a transport device to the horizontal screw silo 10. Supply to the mouth 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 conveyance device 40 is configured such that the cargo C conveyed to the horizontal conveyance device 40 rotates, for example, the preceding and subsequent screws 41 and 42 in respective positive rotations, so that the cylindrical wall surface from the center column 14 side of the horizontal conveyance device 40 is obtained. It is configured to be horizontally conveyed to the 20d side. 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, in the vicinity of the preceding and succeeding screws 41 and 42, in the lower space, from the center column 14 side toward the cylindrical wall surface 20d side. The sheets are sequentially accommodated along the horizontal transfer 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 swivel frame 30 is swung by a predetermined angle to move the horizontal transport device 40 in the circumferential direction (the swiveling direction T ′ during loading), FIG. And 3) (see arrow in Fig. 3), and further, cargo C is uniformly stored in one area 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, the cargo C is evenly dispersed and accommodated in the circumferential direction 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 cylindrical cargo hold 20 is completed, the suspension wire 34 that suspends the horizontal conveyance device 40 is wound up by the winch 35 of the swivel frame 30, and the horizontal conveyance is performed. The height of the 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 the position directly above the bottom surface portion 20b to a desired position or fully loaded, so that the cargo C is loaded into the cargo hold 20 and the loading operation is completed.

  Next, a payment / shipping combination using the horizontal screw silo 10 will be described. The payer / shipper receives the cargo C loaded in the cargo hold 20 of the horizontal screw silo 10 via the horizontal conveying device 40, the center column 14, the discharge conveyor 18, the upward conveying device, the connecting conveying device, etc. It is a cargo handling to be paid out to other cargo handling equipment.

  That is, first, another cargo handling facility and a connection transport device are connected by a connection portion (not shown). Next, the preceding and succeeding 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 is fed out by the winch 35. Then, the horizontal transfer device 40 is moved so as to have a predetermined relative height with respect to the upper surface CS of the raw material C on which the horizontal transfer device 40 is mounted.

  Next, the swivel frame 30 is swung at a predetermined swirl speed, and the horizontal transport device 40 is swung in a swiveling direction opposite to that for loading, thereby allowing the cargo C to be centered from the cylindrical wall surface 20d side of the horizontal transport device 40. It is horizontally transported to the column 14 side while being crushed, excavated and scraped as described above. 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. The payer / shipper collects the cargo C from the cargo hold 20 to the center column 14 by such turning of the horizontal transfer device 40. In addition, the amount of unloading per hour can be controlled by controlling the turning speed of the turning frame 30.

  Then, when the collection of the cargo C for one round in the 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 determined. Lower quantitative. 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 from the upper surface CS of the cargo C loaded in the cargo hold 20 to a desired position or directly above the bottom surface portion 20b, so that the cargo C in the cargo hold 20 is center column. Collect in 14. The cargo C discharged from the discharge port 29 below the center column 14 is conveyed in the horizontal direction by the discharge conveyor 18 disposed below the horizontal screw silo 10.

  Then, the cargo C transported by the discharge conveyor 18 is transported to another cargo handling facility via an upward transport device, a connection transport device, a connection portion, and the like. This completes the payment / shipment of the horizontal screw silo 10.

  As described above, in the horizontal screw silo 10 according to the first embodiment of the present invention, the screw 41 b provided in the range where the leading screw 41 of the horizontal conveying device 40 overlaps the bearing portions 62 a and 62 b of the trailing screw 42. However, the lower end position 71b of the outer periphery is configured to be located on the substantially same horizontal plane F as the lower end position 72a of the outer periphery of the screw blade 42b of the subsequent screw 42.

  As a result, even if the preceding screw 41 covers the range in which the cargo C cannot be excavated at locations corresponding to the bearing portions 62a and 62b of the subsequent screw 42, and is loaded in the cargo hold 20 and is quasi-solidified. Since the cargo C which has been excavated, crushed and pseudo-solidified can be prevented from hindering the horizontal conveyance of the subsequent screw 42, the horizontal conveyance device 40 having a small horizontal conveyance resistance and a small turning resistance can realize stable payment and shipping. Can be performed.

[Second Embodiment]
FIG. 7 is a simplified top view showing a partial configuration of a horizontal conveying device of a horizontal screw silo according to the second embodiment of the present invention. 8 is an enlarged sectional view taken along the line FF ′ of FIG. 7, FIG. 9 is an enlarged sectional view of the line GG ′ of FIG. 7, and FIG. 10 is an enlarged sectional view of the line JJ ′ 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.

  Specifically, as shown in FIGS. 7 to 9, the leading screw 41 has a screw blade 41 b provided in a range overlapping with the bearing portions 62 a and 62 b of the trailing screw 42, and a lower end position 71 b on the outer periphery thereof is a trailing screw. It is formed so as to be positioned on the same horizontal plane F as the lower end position 72a of the outer periphery of the 42 screw blades 42b.

  Further, the subsequent screw 42 has a screw blade 42b provided in a range overlapping the bearing portions 61a and 61b of the preceding screw 41, and a lower end position 72b of the outer periphery thereof is equal to a lower end position 71a of the outer periphery of the screw blade 41b of the preceding screw 41 and the cargo. It is formed so as to be positioned below the cargo hold 20 from the lower end position 72a of the outer periphery of the screw blade 42b of the subsequent screw 42 by a distance substantially equal to the above-described difference distance h1 with the upper surface (surface) CS of C. As a result, the horizontal conveyance resistance of the preceding and subsequent screws 41 and 42 and the turning resistance of the horizontal conveyance device 40 are small, and a stable paying and shipping combination is possible.

  In addition, as shown in FIG. 10, instead of increasing the blade diameter of the screw blades 41b and 42b of the preceding and succeeding screws 41 and 42, the protrusions 41c and 42c are provided at the tip portions of the screw blades 41b and 42b, respectively. However, the same effects as described above can be achieved.

[Third Embodiment]
FIG. 11 is a cross-sectional view showing a horizontal screw silo according to a third embodiment of the present invention. 12 is an enlarged top view of HH ′ of FIG. 11, FIG. 13 is a simplified top view of HH ′ of FIG. 11, and FIG. 14 is an enlarged sectional view of II ′ of FIG. The horizontal screw silo according to the third embodiment employs a horizontal conveying device 40A to which an auxiliary horizontal screw 47 is attached instead of the scraper 46 attached to the screw frame portion 48 of the horizontal conveying device 40. The first point is that the subsequent screws 41 and 42 are configured only with a structure having different screw outer diameters so that the screw outer diameter of the preceding screw 41 is smaller than the screw outer diameter of the subsequent screw 42, for example. And it is different from the horizontal screw type silo according to the second embodiment. In FIGS. 11 to 14, it goes without saying that the configuration according to the present invention described in the first and second embodiments may be applied to the preceding and succeeding screws 41 and 42. By configuring the screw outer diameters to be different diameters, the effects described with reference to FIG. 4 in the first embodiment can be achieved, but the preceding and succeeding screws 41 and 42 having the same screw outer diameter can be obtained. Even if the mounting height of the shaft center is adjusted, it is possible to obtain the same effect.

  The horizontal conveying device 40A includes an auxiliary horizontal screw 47 that is disposed on the preceding side in the turning direction T in the vicinity of the cylindrical wall surface 20d of the screw frame portion 48 and excavates and disintegrates the cargo C in the cargo hold 20. The auxiliary horizontal screw 47 has at least two screw shafts 47a, a screw shaft 47a provided so that the extension line of the shaft center substantially coincides with the center of the center column 14, a screw blade 47b provided on the screw shaft 47a, and the screw shaft 47a. And a drive unit 47d that rotationally drives the auxiliary horizontal screw 47. In addition, the bearing part has illustrated the bearing part 47c and the bearing part 47e of the drive machine 47d vicinity. The drive unit 47d is attached and fixed to the screw frame portion 48 via a stay (not shown) so that the drive unit 47d does not fall down due to a driving reaction force, like the drive units 43 and 44.

  The auxiliary horizontal screw 47 is installed such that the range covered by the screw blades 47b in the turning direction T is a range including at least the end portion of the preceding screw 41 on the cylindrical wall surface 20d side and the bearing portion 61a closest to the drive unit 43. ing. The rotation direction of the auxiliary horizontal screw 47 is configured so as to be opposite to the rotation direction of the preceding screw 41. For example, at the time of paying and shipping, the auxiliary horizontal screw 47 rotates so that the cargo C can be horizontally conveyed from the cylindrical wall surface 20d to the center side of the cargo hold 20. To do.

  In the horizontal screw silo according to the third embodiment configured as described above, the auxiliary horizontal screw 47 provided in the horizontal transfer device 40A is rotated by the screws 41 and 42 when the horizontal transfer device 40 is driven to rotate. A cargo layer having a thickness corresponding to Ar ′ + Bd remaining on the upper surface CS of the cargo C on the cylindrical wall surface 20d side is excavated and transported in the horizontal direction.

  Therefore, the cargo C can be reliably transported horizontally without remaining on the upper surface CS of the cargo C on the cylindrical wall surface 20d side. By providing the auxiliary horizontal screw 47, the horizontal conveying device 40A can reduce the scraping resistance of the cargo C compared to the case where the scraper 46 is employed. Thereby, it is possible to smoothly turn the horizontal transfer device 40 </ b> A according to the turning of the turning frame 30.

  That is, the rotation direction of the auxiliary horizontal screw 47 is the same as that of the subsequent screw 42, and the layer thickness of the cargo C excavated by the auxiliary horizontal screw 47 is almost the same as the layer thickness that the subsequent screw 42 should be in charge of (Ar ′ + Bd Therefore, it can be made substantially the same as the turning resistance when it is assumed that the subsequent screw 42 excavates.

  Further, also in the operation of extending the suspension wire 34 from the winch 35 and lowering the screw frame portion 48 below the cargo hold 20, excavation of the cargo C in the vertical direction (vertical direction) is performed by the auxiliary horizontal screw 47. Therefore, since excessive digging resistance in the vertical direction does not occur and the suspending wire 34 does not loosen, it can be performed as well as in the vertical digging by the screws 41 and 42.

  Further, since the auxiliary horizontal screw 47 is disposed so that the axis of the screw shaft 47a passes through the approximate center of the cargo hold 20 on the extension line, the end portions of the screw shaft 47a and the screw blade 47b are placed close to the cylindrical wall surface 20d. It is possible to minimize the presence of cargo C remaining on the cylindrical wall surface 20d side.

DESCRIPTION OF SYMBOLS 10 Horizontal screw type silo 11 Swivel cylinder 12 Horizontal screw conveyor 13 Telescopic chute 14 Center column 20 Cargo hold 30 Swivel frame 34 Suspension wire 40 Horizontal conveyance device 41, 42 Horizontal screw 43, 44 Driver 45 Swivel roller unit 46 Scraper 47 Auxiliary Horizontal screw 48 Screw frame

Claims (7)

A cargo hold having a cargo supply port in the upper part and having a cylindrical wall surface inside to accommodate powdery, granular, lump or pellet-like 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 that is disposed at an upper position inside the cargo hold and is swiveled around a center axis of the cylindrical wall surface as a swivel axis, and whose tip extends radially to the cylindrical wall surface and is movably supported along the cylindrical wall surface Frame,
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 cylindrical 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 radially from the central axis toward the cylindrical 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;
A scraping member disposed on the leading side in the turning direction in the vicinity of the cylindrical wall surface of the screw frame portion, and scraping off the cargo stored in the cargo hold;
Each of the plurality of horizontal screws includes a screw shaft extending in a radial direction and 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 bearing portion disposed at least in the vicinity of the cylindrical wall surface of the plurality of bearing portions is provided at a position different in the radial direction between one horizontal screw and the other horizontal screw,
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 lower 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 that is formed to be positioned and arranged on the leading side is a screw blade provided in a range that overlaps the bearing portion of the horizontal screw that is arranged on the trailing side, and the lower end position of the outer periphery thereof is located on the trailing side. A horizontal screw silo characterized in that the horizontal screw silo is formed so as to be positioned on substantially the same horizontal plane as the lower end position of the outer periphery of a screw blade of a horizontal screw arranged on the side. The horizontal screw disposed on the leading side is provided with a protrusion at a tip end of a screw blade provided in a range overlapping the bearing portion of the horizontal screw disposed on the subsequent side, and the screw blade includes the protrusion 2. The horizontal screw according to claim 1, wherein the lower end position of the outer periphery including the outer peripheral screw is formed so as to be positioned on substantially the same horizontal plane as the lower end position of the outer periphery of the screw blade of the horizontal screw disposed on the subsequent side. Expression silo. The horizontal screw arranged on the rear side is a screw blade provided in a range overlapping with the bearing portion of the horizontal screw arranged on the preceding side, and the lower end position of the outer periphery of the horizontal screw is arranged on the preceding side. It is formed so as to be located below the lower end position of the outer periphery of the screw blade of the horizontal screw arranged on the subsequent side by a distance substantially equal to the difference distance between the lower end position of the outer periphery of the screw blade and the surface position of the cargo. The horizontal screw silo according to claim 1 or 2, wherein The horizontal screw disposed on the subsequent side is provided with a protrusion at a tip end of a screw blade provided in a range overlapping with a bearing portion of the horizontal screw disposed on the preceding side, and the screw blade includes the protrusion Of the horizontal screw disposed on the subsequent side by a distance substantially equal to the differential distance between the lower end position of the outer periphery of the screw blade of the horizontal screw disposed on the preceding side and the surface position of the cargo. The horizontal screw silo according to claim 1 or 2, wherein the horizontal screw silo is formed so as to be located below a lower end position of an outer periphery of the screw blade. The horizontal screw silo according to any one of claims 1 to 4, wherein the scraping member is a scraper. A cargo hold having a cargo supply port in the upper part and having a cylindrical wall surface inside to accommodate powdery, granular, lump or pellet-like 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 that is disposed at an upper position inside the cargo hold and is swiveled around a center axis of the cylindrical wall surface as a swivel axis, and whose tip extends radially to the cylindrical wall surface and is movably supported along the cylindrical wall surface Frame,
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 cylindrical 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 radially from the central axis toward the cylindrical 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;
A horizontal screw silo, comprising: an auxiliary horizontal screw that is disposed on the leading side in the turning direction in the vicinity of the cylindrical wall surface of the screw frame portion and scrapes the cargo stored in the cargo hold. Each of the plurality of horizontal screws includes a screw shaft extending in a radial direction and 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 bearing portion disposed at least in the vicinity of the cylindrical wall surface of the plurality of bearing portions is provided at a position different in the radial direction between one horizontal screw and the other horizontal screw,
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 lower than the lower end position of the outer periphery of the screw blade of the horizontal screw disposed on the preceding side. It is formed so that it may be located. The horizontal screw type silo of Claim 6 characterized by the above-mentioned.

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