JP2020158237A - Bulk cargo unloading device - Google Patents

Abstract

To provide a bulk cargo unloading device capable of generating less damage to and dust on a bulk cargo.SOLUTION: A bulk cargo unloading device 1 has a conveying conveyor 3 for conveying a bulk cargo in a conveying direction D1, and a distribution device 5 for selectively distributing the bulk cargo 100 to ground conveyors 102 and 103 aligned in the conveying direction D1. The distribution device 5 allows a position of the downstream side end 3a of the conveying conveyor 3 is displaced between the plurality of the ground conveyors 102 and 103.SELECTED DRAWING: Figure 1

Description

The present invention relates to a loose material unloading device.

A loose unloading device that accepts loose objects such as limestone, iron ore, and coal from a carrier is known (see, for example, Patent Document 1).

The loose goods unloading device described in Patent Document 1 includes a receiving chute, a front conveyor, and a rear conveyor. The receiving chute is installed on the sea side of the quay and accepts loose objects discharged from self-unloading vessels. The loose objects that have passed through the receiving chute are transported to the land side by the front conveyor and the rear conveyor. Below the land side end of the rear conveyor, a hinterland conveyor is laid as a device separate from the loose goods unloading device. The loose objects conveyed by the rear conveyor fall to the hinterland conveyor. The front and rear conveyors extend from the sea side to the land side. On the other hand, the hinterland conveyor extends in a direction different from the direction in which the conveyor extends.

Japanese Unexamined Patent Publication No. 11-32208

The hinterland conveyor described in Patent Document 1 is Article 1. On the other hand, depending on the factory, two or more ground conveyors as hinterland conveyors may be provided. In this case, the ground conveyors are arranged parallel to each other. Then, the loose goods unloading device alternately delivers the loose goods to a plurality of ground conveyors. Specifically, a conveyor for distribution is arranged above the ground conveyor. One end of the distribution conveyor is placed on one of the ground conveyors. The other end of the distribution conveyor is located on the other ground conveyor. Then, the loose objects carried by the transfer conveyor from the receiving chute fall from the transfer conveyor to the distribution conveyor. Then, when the distribution conveyor rotates in one direction, the loose objects fall to one of the ground conveyors. On the other hand, when the distribution conveyor rotates in the other direction, loose objects fall to the other ground conveyor.

However, with the above configuration, a head is generated between the transport conveyor and the distribution conveyor, and a head is also generated between the distribution conveyor and the ground conveyor. For this reason, the distance that the loose object falls becomes long, and the loose object is easily damaged. In addition, the amount of dust generated when loose objects fall increases.

In view of the above circumstances, an object of the present invention is to provide a loose object unloading device capable of reducing damage to loose objects and generation of dust.

(1) In order to solve the above problems, the loose material unloading device according to a certain aspect of the present invention is
A conveyor that transports loose objects received at a predetermined receiving position along a predetermined transport direction,
A distribution device that selectively distributes the loose objects conveyed by the transfer conveyor to a plurality of counterparty conveyors arranged side by side in the transfer direction.
With
The distribution device is configured to displace the position of the downstream end of the conveyor in the transport direction among the plurality of other conveyors.

(2) The loose goods unloading device according to (1).
The distribution device changes the route of the conveyor so that the tension member that applies tension to the conveyor and the position of the downstream end portion are changed along the conveyor by displace the tension member. Includes a displacement mechanism and.

(3) The loose goods unloading device according to (2).
The tension member includes a roller that rolls into contact with the conveyor.
The displacement mechanism changes the path of the conveyor by changing the position of the downstream end portion via the roller.

(4) The loose goods unloading device according to (2) or (3).
The conveyor is formed in an endless shape and has an endless shape.
An upper region for moving the conveyor along the transport direction to transport the loose objects, and a conveyor for returning the conveyor to the receiving position along the direction opposite to the transport direction. The lower area to move is defined,
The displacement mechanism changes the vertical length of the intermediate portion of the conveyor in the lower region.

According to the present invention, it is possible to reduce the damage of loose objects and the generation of dust.

It is a schematic side view of the loose goods unloading apparatus which concerns on one Embodiment of this invention. It is a schematic plan view of a loose object unloading device. FIG. 3A is a schematic view of a main part showing a state in which the downstream end of the conveyor is located on one of the payout ports, and FIG. 3B is a schematic view of the downstream end of the conveyor. It is a schematic diagram of the main part which shows the state which is located on the other payout port. It is a flowchart for demonstrating an example of the installation method of the loose goods unloading apparatus. FIG. 5A is a diagram for explaining step S1, and FIG. 5B is a diagram for explaining step S2. FIG. 6A is a diagram for explaining step S3, and FIG. 6B is a diagram for explaining step S4.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

FIG. 1 is a schematic side view of a loose object unloading device 1 according to an embodiment of the present invention. FIG. 2 is a schematic plan view of the loose object unloading device 1. FIG. 3A is a schematic view of a main part showing a state in which the downstream end 3a of the conveyor 3 of the loose goods unloading device 1 is located on one of the payout ports 22. FIG. 3B is a schematic view. Is a schematic view of a main part showing a state in which the downstream end 3a of the conveyor 3 is located on the other payout port 23. With reference to FIGS. 1 to 3 (B), the loose material unloading device 1 receives the loose material 100 from the carrier 101 or the like, and receives the loose material 100 from the ground conveyor 102 having a plurality of rows (2 rows in the present embodiment). , 103. Examples of the loose material 100 include massive limestone, iron ore, and coal. The loose object unloading device 1 is installed on the quay 104. The quay 104 is, for example, the quay of a factory that handles the loose object 100. The loose object unloading device 1 is installed adjacent to the end surface 104a (the surface in contact with seawater) of the quay 104.

The loose object unloading device 1 is elongated with the direction orthogonal to the end surface 104a in the side view as the transport direction D1. The loose object unloading device 1 receives the loose object 100 at the receiving position P1 near the end surface 104a of the quay 104. The receiving position P1 is installed near the ground 105. Then, the loose object unloading device 1 lifts the loose object 100 to a position higher than the receiving position P1 while conveying the loose object 100 along the conveying direction D1. Then, the loose object unloading device 1 selectively discharges the loose object 100 to the ground conveyors 102 and 103 at a position far from the end surface 104a of the quay 104 in the loose object unloading device 1. In the following, the side closer to the end face 104a of the quay 104 is referred to as the "sea side", and the side far from the end face 104a of the quay 104 is referred to as the "land side".

The ground conveyors 102 and 103 are arranged side by side along the transport direction D1 and extend in a direction different from the transport direction D1 in a plan view. In the present embodiment, the ground conveyors 102 and 103 are arranged in a direction orthogonal to the transport direction D1 (quay). It extends in a direction parallel to the end face 104a of 104). The ground conveyors 102 and 103 are installed on the gantry 106 below the land side end of the loose object unloading device 1. The ground conveyors 102 and 103 are arranged at intervals along the transport direction D1. The ground conveyors 102 and 103 each convey the loose objects 100 discharged from the loose object unloading device 1 in the transport directions of the ground conveyors 102 and 103.

The loose object unloading device 1 includes a frame 2, a conveyor 3, a conveyor drive device 4, a distribution device 5, a main pillar 6, a first wheel 7, and a second wheel 8.

The frame 2 is a skeleton portion of the loose object unloading device 1, and is formed of a steel material. The frame 2 supports a transfer conveyor 3, a transfer conveyor drive device 4, a distribution device 5, and the like. The frame 2 is elongated in the transport direction D1 in the plan view shown in FIG.

The frame 2 has a first flat portion 10 arranged adjacent to the end surface 104a of the quay 104, an inclined portion 11 extending from the first flat portion 10 to the land side, and a second flat portion extending from the inclined portion 11 to the land side. It has 12 and.

The first flat portion 10 and the inclined portion 11 each have a floor portion 13 formed of a steel material, a steel plate, or the like, and a truss portion 14 in which steel materials are combined in a triangular shape on the floor portion 13. The first flat portion 10 is a portion extending substantially horizontally and is close to the ground 105. The operation room 15 is installed on the first flat portion 10. The operation room 15 is provided for the operator to operate the loose object unloading device 1. An operation panel (not shown) for operating the loose object unloading device 1 and the like is arranged in the operation room 15. The control cable connected to the operation room 15 may be connected to the pendant operation panel installed on the carrier 101. In this case, the sailor can operate the loose object unloading device 1 by operating the pendant operation panel on the deck of the carrier 101. The inclined portion 11 extends from the first flat portion 10 toward the land side.

The inclined portion 11 is a portion in which the height from the ground 105 increases toward the land side. The inclined portion 11 is provided to lift the loose object 100 to a higher position. In the present embodiment, in the frame 2, of the first flat portion 10, the inclined portion 11, and the second flat portion 12, the length of the inclined portion 11 is the longest in the transport direction D1, followed by the second flat portion 12. Is long. A reception port 16 is arranged at the sea side end of the inclined portion 11. The receiving port 16 is formed on the upper portion of the inclined portion 11, for example, the truss portion 14. The receiving port 16 is configured to be able to receive the lower end (payout hopper) of the unloader 107 provided on the carrier 101. The position where the receiving port 16 is provided is the receiving position P1 for receiving the loose object 100. The second flat portion 12 extends from the land side end portion of the inclined portion 11 toward the land side.

In the present embodiment, the second flat portion 12 has a floor portion 13 formed by using a steel plate or the like. The second flat portion 12 extends substantially horizontally and constitutes a land-side end portion of the frame 2. At least a part of the second flat portion 12 is located above the ground conveyors 102 and 103. A plurality of payout ports 22 and 23 are formed on the floor portion 13 of the second flat portion 12.

The payout ports 22 and 23 are provided to pay out the loose objects 100 conveyed by the transfer conveyor 3 to a plurality of ground conveyors 102 and 103 arranged side by side in the transfer direction D1. The payout ports 22 and 23 are arranged apart from each other in the transport direction D1. Each of the payout ports 22 and 23 is formed directly above the corresponding ground conveyors 102 and 103, and forms an opening that penetrates the floor portion 13 up and down. The height positions of the payout ports 22 and 23 are higher than the height position of the receiving position P1. The loose object 100 discharged from one payout port 22 is placed on the conveyor belt of one ground conveyor 102. Similarly, the loose material 100 discharged from the other payout port 23 is placed on the conveyor belt of the other ground conveyor 103.

The conveyor 3 is installed on the frame 2 having the above configuration.

The conveyor 3 is an endless rubber belt on which the loose object 100 is placed. The conveyor 3 extends in the transport direction D1. The conveyor 3 receives the loose object 100 at the receiving position P1 and conveys the loose object 100 in the conveying direction D1. Then, the conveyor 3 selectively dispenses the loose objects 100 to the plurality of payout ports 22 and 23 at the land side end of the loose object unloading device 1.

The conveyor 3 extends from the sea-side end of the inclined portion 11 of the frame 2 to the second flat portion 12. The conveyor 3 is rotatably supported by a plurality of rollers including a drive roller 24, a first movable roller 25, a second movable roller 26, and a pair of U-shaped forming rollers 27 and 28. The conveyors 3 are arranged in a T shape as a whole in a side view. Then, the conveyor 3 circulates between the receiving position P1 and the payout ports 22 and 23 (payout positions).

The conveyor 3 is defined with an upper region 31 and a lower region 32 located below the upper region 31.

The upper region 31 is an region in which the conveyor 3 is moved along the transport direction D1 in order to transport the loose object 100. In the side view, the upper region 31 is inclined along the inclination of the floor portion 13 of the inclined portion 11, and extends horizontally along the floor portion 13 of the second flat portion 12. The lower region 32 is an region in which the conveyor 3 is moved along the direction opposite to the transport direction D1 in order to return the conveyor 3 toward the receiving position P1. In the lower region 32, the conveyor 3 extends substantially horizontally along the floor 13 above the floor 13 in the second flat portion 12.

Further, the conveyor 3 forms a U-shaped path in a side view below the floor portion 13 at the land side end portion of the inclined portion 11, and the floor portion 13 is formed in the remaining portion of the inclined portion 11. It extends upward along the slope of the floor portion 13. In other words, a U-shaped region 33 is formed in the middle portion of the conveyor 3 in the lower region 32. The U-shaped region 33 extends vertically and elongatedly. In the present embodiment, the lower end of the U-shaped region 33 is close to the ground 105, but does not touch the ground 105. Similarly, the weight 37, which will be described later, does not touch the ground 105.

The conveyor conveyor drive device 4 is provided for rotationally driving the conveyor belt 3. The conveyor conveyor drive device 4 includes a drive motor 34 as a drive source for rotationally driving the conveyor belt 3. The drive motor 34 is an electric motor in this embodiment. The drive motor 34 may be an internal combustion engine such as a diesel engine or another drive source such as a hydraulic motor. The drive motor 34 is required to have a large output in order to rotationally drive the conveyor 3 on which the loose object 100 is placed. Therefore, the weight of the drive motor 34 reaches, for example, several tons. The drive motor 34, which is a heavy object, is installed at a portion of the loose object unloading device 1 near the sea side, specifically, at the sea side end portion of the inclined portion 11.

The drive motor 34 is arranged at a position advanced from the position of the weight 37 as the heaviest component described later in the distribution device 5 to the receiving position P1 side. The height of the drive motor 34 from the ground 105 is set to about 1 meter, and the drive motor 34 is installed at a low position. The drive motor 34 is connected to a drive roller 24 as a roller that supports a portion of the conveyor 3 located at the sea side end (upstream end in the transport direction D1) so as to be able to transmit power. The rotation of the output shaft of the drive motor 34 causes the drive roller 24 to rotate, which causes the conveyor 3 to rotate.

The distribution device 5 is provided to selectively distribute the loose objects 100 on the transfer conveyor 3 to the plurality of payout ports 22 and 23 (ground conveyors 102 and 103). In the present embodiment, the distribution device 5 is configured to displace the position of the downstream end 3a of the conveyor 3 in the transport direction D1 between the plurality of payout ports 22 and 23 in the transport direction D1. .. The position of the downstream end portion 3a is a position where the loose object 100 is discharged from the conveyor 3, and is set to a position higher than the receiving position P1. In the present embodiment, the distribution device 5 selectively dispenses the loose objects 100 to the plurality of payout ports 22 and 23 by changing the route of the conveyor 3 itself.

The distribution device 5 selectively distributes the loose objects 100 to the payout ports 22 and 23 by deforming the transfer conveyor 3 (changing the path of the transfer conveyor 3). Most of the distribution device 5 is arranged in an area surrounded by the conveyor 3 in a side view. As a result, the dedicated space for the distribution device 5 can be reduced.

The distribution device 5 includes a first movable roller 25, a roller tensioner 35 attached to the first movable roller 25, a second movable roller 26, a guide 36 that defines the displacement direction of the second movable roller 26, and a second. It has a weight 37 connected to a movable roller 26.

The first movable roller 25 is an example of a “tension member that applies tension to a conveyor”. The first movable roller 25 is arranged at the downstream end 3a of the conveyor 3, and is in rolling contact with the inner peripheral surface of the conveyor 3. The first movable roller 25 is supported by the second flat portion 12 via the roller tensioner 35 so as to be movable in a direction parallel to the transport direction D1 (horizontal direction and a direction toward the sea side and a direction toward the land side). ing. As long as the first movable roller 25 can move in the direction parallel to the transport direction D1, the structure for supporting the first movable roller 25 on the second flat portion 12 is not limited. The distance that the first movable roller 25 can move in the direction parallel to the transport direction D1 corresponds to the distance A1 between the center position of one payout port 22 and the center position of the other payout port 23 in the transport direction D1. The first movable roller 25 is subjected to a tensile load on the land side in a state where it can be moved in a direction parallel to the transport direction D1 by the roller tensioner 35.

The roller tensioner 35 is a displacement mechanism that changes the path of the conveyor 3 so as to change the position of the downstream end portion 3a along the transport direction D1 by displacing the first movable roller 25. The roller tensioner 35 includes a mechanism for moving the first movable roller 25 in a direction parallel to the transport direction D1. This mechanism has, for example, a wire attached to the first movable roller 25, a pulley that guides the movement of the wire, and a winch around which the wire is wound. Then, the first movable roller 25 is moved in a direction parallel to the transport direction D1 by changing the amount of wire drawn out from the winch by the output of an electric motor or the like provided on the winch. The roller tensioner 35 changes the path of the conveyor 3 by changing the position of the downstream end portion 3a via the first movable roller 25. As a result, the vertical length L1 of the U-shaped region 33 in the middle portion of the lower region 32 is changed. The winch in the roller tensioner 35 is installed in the second flat portion 12 at a position adjacent to the payout port 23. The roller tensioner 35 may be configured as long as it can move the first movable roller 25 in a direction parallel to the transport direction D1, and the specific configuration is not limited. For example, an actuator for moving the second movable roller 26 in the vertical direction is provided in the distribution device 5, and the second movable roller 26 is moved in the vertical direction to move the first movable roller 25 and the downstream end portion 3a in the transport direction D1. It may be moved in a direction parallel to.

The second movable roller 26 is in rolling contact with the inner peripheral surface of the U-shaped region 33 of the lower region 32 of the conveyor 3. A weight 37 for maintaining the shape of the U-shaped region 33 is attached to the second movable roller 26. A pair of U-shaped forming rollers 27 and 28 are arranged above the second movable roller 26. A U-shaped region 33 is formed on the conveyor 3 by the second movable roller 26 and the pair of U-shaped forming rollers 27 and 28. The lower end of the U-shaped region 33 is located below the second movable roller 26. The second movable roller 26 is guided by the guide 36.

The guide 36 changes the path of the conveyor 3 so as to change the position of the downstream end 3a of the conveyor 3 along the conveyor D1 by guiding the displacement of the second movable roller 26 in the vertical direction. To do. The guide 36 is arranged below the inclined portion 11 of the frame 2. The guide 36 includes a columnar member extending in the vertical direction. This columnar member is configured to be able to receive, for example, a bearing attached to the second movable roller 26. The weight 37 is fixed to the second movable roller 26 whose vertical movement is guided by the guide 36.

The weight 37 is the heaviest component as the heaviest component in the distribution device 5. The weight 37 has a weight of, for example, 10 tons, and maintains the shape of the U-shaped region 33 by applying tension to the conveyor 3 via the second movable roller 26. The weight 37 is arranged at a position advanced to the receiving position P1 side with respect to the position where the loose object 100 is discharged from the transport conveyor 3 (downstream side end portion 3a).

With the above configuration, when the first movable roller 25 moves along the transport direction D1 by the drive of the roller tensioner 35, the second movable roller 26 is displaced in the vertical direction together with the weight 37. Then, the lower end portion of the U-shaped region 33 hung on the second movable roller 26 also moves in the vertical direction together with the second movable roller 26. As a result, the vertical length L1 of the U-shaped region 33 changes. As a result, the downstream end portion 3a of the transport conveyor 3 hung on the first movable roller 25 is displaced to the upstream side or the downstream side of the transport direction D1. For example, the downstream end 3a is located above one of the payout ports 22 and the ground conveyor 102 as shown in FIG. 3 (A), and the other end 3a as shown in FIG. 3 (B). The state of being located above the payout port 23 and the ground conveyor 103 is switched.

In the loose object unloading device 1 having the above-described configuration, the frame 2 is installed on the ground 105 by using the main pillar 6, the first wheel 7, and the second wheel 8.

The main pillar 6 is provided as a portion that supports the frame 2. The main pillar 6 is a pillar extending in the vertical direction. A pair of main pillars 6 are provided in the moving direction D2 in a plan view. The pair of main columns 6 and 6 are fixed to each other by a plurality of connecting beams 38 (one connecting beam 38 is shown in the figure) arranged in the vertical direction. The plurality of connecting beams 38 are arranged vertically separated from each other. The main pillar 6 is fixed to the inclined portion 11 of the frame 2, and is arranged closer to the land side in the substantially center of the loose object unloading device 1 in the transport direction D1. A weight 37 is adjacent to the land side of the main pillar 6.

The main pillar 6 is arranged near the land side end portion of the inclined portion 11. The pair of main pillars 6 and 6 each have a main pillar upper portion 6a extending above the inclined portion 11 of the frame 2 and a main pillar lower portion 6b extending below the inclined portion 11.

The upper portion 6a of the main pillar is located above the floor portion 13 of the inclined portion 11, and extends substantially straight in the vertical direction in the side view. A first tension bar 41 and a second tension bar 42 formed by shaping a strip of steel are attached to the upper end of the upper portion 6a of the main column. The first tension bar 41 is hung on the truss portion 14 of the inclined portion 11 of the frame 2 near the sea side and the upper portion 6a of the main pillar. The second tension bar 42 is hung on the portion between the payout ports 22 and 23 of the floor portion 13 of the second flat portion 12 of the frame 2 and the upper portion 6a of the main pillar. With the above configuration, the main pillar 6 suspends and supports the inclined portion 11 and the second flat portion 12.

The lower portion 6b of the main pillar is located below the floor portion 13 of the inclined portion 11, and extends substantially straight in the vertical direction in the side view. The lower portion 6b of the main pillar is arranged adjacent to the weight 37. The second wheel 8 is attached to the lower end of the lower portion 6b of the main pillar, and the first wheel 7 is attached to the sea side end of the first flat portion 10 of the frame 2.

The first wheel 7 and the second wheel 8 are mounted on the rails 108 and 109 which are installed on the ground 105 and extend on the rails 108 and 109 extending along the predetermined movement direction D2, and receive the load of the frame 2. ing. The moving direction D2 is along the direction in which the ground conveyors 102 and 103 extend. A plurality of the first wheels 7 are arranged along the moving direction D2. The first wheel 7 is attached to the first flat portion 10 of the first flat portion 10, for example, below the operation chamber 15. The first wheel 7 is arranged adjacent to the end surface 104a of the quay 104, and is arranged adjacent to a position advanced from the receiving position P1 to the sea side.

A plurality of the second wheels 8 are arranged along the moving direction D2. The second wheel 8 is attached to the lower end of the lower portion 6b of the main pillar. The second wheel 8 is arranged adjacent to the weight 37 in the transport direction D1. Further, the second wheel 8 is arranged between the downstream end portion 3a and the first wheel 7 in the transport direction D1. With the above configuration, the loose object unloading device 1 can move in the moving direction D2 by rolling the first wheel 7 and the second wheel 8 on the rails 108 and 109.

The above is the schematic configuration of the loose material unloading device 1. Next, a method of installing the loose object unloading device 1 on the quay 104 will be described. According to the installation method described below, the period for occupying the quay 104 for installing the loose object unloading device 1 on the quay 104 can be shortened.

FIG. 4 is a flowchart for explaining an example of the installation method of the loose object unloading device 1. In the following, when the explanation is made with reference to the flowchart, the drawings other than the flowchart will be described as appropriate.

When installing the loose goods unloading device 1 on the quay 104 with reference to FIG. 4, first, the parts of the loose goods unloading device 1 are conveyed to the opposite shore 110 of the quay 104 (step S1). Specifically, as shown in FIG. 5A, the parts (steel materials and the like constituting the frame 2) are transported by sea using a carrier or by truck from a factory that manufactures the parts of the loose goods unloading device 1. It will be transported to the opposite bank 110 by land transportation using. FIG. 5A illustrates a part of the parts of the loose object unloading device 1. The opposite shore 110 is a shore adjacent to the quay 104 to be installed on which the loose object unloading device 1 is installed, and is located at a position substantially straight away from the quay 104 across the sea. The opposite shore 110 is an example of "a shore different from the quay to be installed".

Next, the loose object unloading device 1 is assembled using the opposite bank 110 as a temporary assembly place (step S2). That is, the opposite bank 110 is temporarily used as an assembly place for the loose object unloading device 1. As a result, as shown in FIG. 5B, the loose object unloading device 1 is assembled on the quay 104.

Next, the assembled loose object unloading device 1 is lifted from the opposite bank 110 by a marine crane 111 and transported over the sea (step S3). At this time, as shown in FIG. 6A, the loose object unloading device 1 is directly suspended by the marine crane 111 without being mounted on the pontoon. Specifically, the marine crane 111 has a hook 112. Then, the transport wires 113 and 114 are hung (tensioned) on the hook 112. One of the transport wires 113 supports the connecting portion 43 between the frame 2 and the main pillar 6. The other transport wire 114 supports an intermediate portion of the inclined portion 11 of the frame 2. In this state, the marine crane 111 lifts the loose object unloading device 1. As a result, the marine crane 111 lifts the loose object unloading device 1 so that the longitudinal direction D3 and the transport direction D1 of the claim arm 115 of the marine crane 111 are parallel to each other in a plan view. Then, the marine crane 111 carries the loose object unloading device 1 to the quay 104.

Next, the marine crane 111 lowers the loose object unloading device 1 onto the rails 108 and 109 installed on the quay 104 as shown in FIG. 6 (B) (step S4). As a result, the loose goods unloading device 1 is installed on the quay 104. After that, the transport wires 113 and 114 are removed from the loose object unloading device 1, and then the marine crane 111 is withdrawn (step S5). This completes the installation work of the loose object unloading device 1. After that, the loose material unloading device 1 is subjected to commercial operation after undergoing inspection, trial operation, and the like.

As described above, according to the loose object unloading device 1, the distribution device 5 displaces the position of the downstream end 3a of the conveyor 3 on which the loose object 100 is conveyed among the plurality of ground conveyors 102 and 103. By doing so, the loose object 100 is distributed. With such a configuration, the ground conveyors 102 and 103 can be installed directly below the conveyor 3. Therefore, when the loose object 100 is discharged to the ground conveyors 102 and 103, the amount of the loose object 100 falling can be small. As a result, damage to the loose object 100 and generation of dust can be reduced.

Further, according to the loose material unloading device 1, the roller tensioner 35 of the distribution device 5 changes the position of the downstream end portion 3a of the conveyor 3 via the first movable roller 25, so that the path of the conveyor 3 is changed. change. With such a configuration, the position of the downstream end 3a of the conveyor 3 can be changed by a simple configuration in which the position of the first movable roller 25 is changed.

More specifically, the first movable roller 25 is moved by the drive of the roller tensioner 35, and as a result, the second movable roller 26 is moved in the vertical direction, so that the U-shaped region 33 of the conveyor 3 is moved in the vertical direction. The length L1 is changed. As described above, if the U-shaped region 33 in the lower region 32 of the conveyor 3 is configured to change the vertical length L1, the second movable roller 26 and the weight 37 do not have to be moved in the horizontal direction. Therefore, it is easy to secure a space for passing a truck vehicle around the loose object unloading device 1.

Further, according to the loose object unloading device 1, the weight 37 as the heaviest component of the distribution device 5 is arranged at a position advanced from the position of the downstream end portion 3a to the receiving position P1 side. According to this configuration, the weight 37 of the distribution device 5 is arranged on the sea side (tail side of the low floor) with respect to the position of the downstream end portion 3a as the position where the loose object 100 is discharged from the distribution device 5. As a result, the weight 37, which is a heavy object, can be brought closer to the sea side (tail side) of the low floor of the loose object unloading device 1. Therefore, the weight balance of the loose object unloading device 1 in the transport direction D1 can be improved. As a result, it is possible to suppress the action of a large load such as a seesaw on the ground conveyors 102 and 103.

Further, according to the loose object unloading device 1, the weight 37 is arranged adjacent to the second wheel 8 in the transport direction D1. According to this configuration, a weight 37, which is a heavy object, is arranged adjacent to the second wheel 8 which is a contact point between the loose object unloading device 1 and the ground 105. As a result, the distance between the second wheel 8 and the U-shaped forming rollers 27, 28 and the weight 37 can be shortened in the transport direction D1, so that the loose object unloading device 1 tilts like a seesaw with the second wheel 8 as a fulcrum. The moment to move can be made smaller. Therefore, it is possible to more reliably suppress the action of a large load such as a seesaw on the ground conveyor 102, 103 side of the loose object unloading device 1.

Further, according to the loose object unloading device 1, the drive motor 34 that rotationally drives the transport conveyor 3 is arranged at a position advanced from the position of the weight 37 to the receiving position P1 side. According to this configuration, the drive motor 34 is required to be powerful in order to rotate the heavy conveyor 3 on which the heavy loose object 100 is placed. Therefore, the drive motor 34 is a heavy object like the weight 37. The drive motor 34, which is a heavy object, is arranged at a position advanced from the position of the weight 37 to the receiving position P1 side. As a result, the heavy drive motor 34 can be arranged at a position lower than the ground 105 on the sea side. As a result, it is possible to more reliably suppress the loose object unloading device 1 from tilting toward the land side like a seesaw.

Further, in the present embodiment, the loose object unloading device 1 is assembled at the opposite bank 110. Then, the assembled loose object unloading device 1 is lifted from the opposite shore 110 by the marine crane 111 and transported over the sea. Then, the loose object unloading device 1 lifted by the marine crane 111 is unloaded on the rails 108 and 109 installed on the quay 104. According to this configuration, the loose object unloading device 1 installed on the quay 104 is transported by the marine crane 111 in the completed state without using a pontoon, and then mounted on the rails 108 and 109. According to this construction method, the loose object unloading device 1 can be installed on the quay 104 in a short period of time and commercial operation can be started.

Further, in the present embodiment, the loose object unloading device 1 is assembled by using the opposite bank 110 of the quay 104 as a temporary assembly place. According to this configuration, the large-sized bulk unloading device 1 is transported by sea or land to the opposite shore 110 in the state of parts. After that, the loose object unloading device 1 is assembled at the temporary assembly site on the opposite bank 110. According to this configuration, it is not necessary to collectively transport the entire loose object unloading device 1 over a long distance, and the labor required for transporting the loose object unloading device 1 can be significantly reduced.

Further, in the present embodiment, the loose object unloading device 1 is formed in an elongated shape in the transport direction D1. Then, when the loose object unloading device 1 is transported by sea, the marine crane 111 lifts the loose object unloading device 1 so that the longitudinal direction D3 and the transport direction D1 of the crane arm 115 of the marine crane 111 are parallel to each other in a plan view. According to this configuration, when the loose object unloading device 1 is installed on the quay 104, the marine crane 111 can mount the loose object unloading device 1 on the rails 108 and 109 without being disturbed by the quay 104. As a result, the work of transporting the loose object unloading device 1 by the marine crane 111 and the work of installing the loose object unloading device 1 on the rails 108 and 109 can be performed collectively.

Further, in the present embodiment, the transport wire 113 stretched on the marine crane 111 supports the connecting portion 43 between the frame 2 and the main pillar 6. According to this configuration, the marine crane 111 can suspend the loose object unloading device 1 in a stable posture.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments. The present invention can be modified in various ways as long as it is described in the claims.

In the above-described embodiment, the embodiment in which the distribution device 5 has the first movable roller 25 and the roller tensioner 35 has been described as an example. However, this does not have to be the case. For example, instead of the distribution device 5, a distribution device may be provided between the downstream end 3a of the conveyor 3 and the payout ports 22 and 23. In this case, the position of the downstream end portion 3a in the transport direction D1 is fixed. The distribution device includes a pair of rollers and a conveyor (conveyor belt) wound around these rollers, and an actuator such as an electric motor for driving the pair of rollers is provided as the "heaviest component". Be done. This electric motor is arranged at a position advanced from the position of the downstream end portion 3a to the receiving position P1 side. This electric motor transmits power to one roller via a power transmission device (not shown). Then, when one roller is rotated in one direction by the electric motor, the loose object 100 is distributed to one payout port 22 by the rotation of the conveyor, and when one roller is rotated in the other direction by the electric motor, it is separated by the rotation of the conveyor. The thing 100 is distributed to the other payout port 23.

The present invention can be widely applied as a loose object unloading device.

1 Loose unloading device 3 Conveyor conveyor 3a Downstream end 5 Distributor 25 1st movable roller (tension member, roller)
31 Upper area 32 Lower area 35 Roller tensioner (displacement mechanism)
100 loose objects 102,103 Ground conveyor (conveyor on the other side)
D1 Transport direction L1 Vertical length P1 Acceptance position

Claims (4)

A conveyor that transports loose objects received at a predetermined receiving position along a predetermined transport direction,
A distribution device that selectively distributes the loose objects conveyed by the transfer conveyor to a plurality of counterparty conveyors arranged side by side in the transfer direction.
With
The distribution device is a loose object unloading device configured to displace the position of a downstream end portion of the conveyor in the transport direction among a plurality of other conveyors. The loose material unloading device according to claim 1.
The distribution device changes the path of the conveyor so that the tension member that applies tension to the conveyor and the position of the downstream end portion are changed along the conveyor by displace the tension member. Displacement mechanism, including a bulk unloading device. The loose material unloading device according to claim 2.
The tension member includes a roller that rolls into contact with the conveyor.
The displacement mechanism is a loose object unloading device that changes the path of the conveyor by changing the position of the downstream end portion via the roller. The loose goods unloading device according to claim 2 or 3.
The conveyor is formed in an endless shape and has an endless shape.
An upper region for moving the conveyor along the transport direction to transport the loose objects, and a conveyor for returning the conveyor to the receiving position along the direction opposite to the transport direction. The lower area to move is defined,
The displacement mechanism is a loose object unloading device that changes the vertical length of an intermediate portion of a conveyor in the lower region.

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