JP2016011177A - Rail support carriage of bridge crane and rail exchange method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rail support carriage and a rail exchange method of a bridge crane by which a long rail on a boom extended above the sea from a dock can be easily exchanged without use of a large-sized heavy machine.SOLUTION: A rail support carriage 20 is equipped with a pair of carriage bodies 22 and a connection frame 24. The carriage body 22 has a horizontal support base 22a which horizontally supports an exchange rail 36 just above an existing rail 16. Plural rail support carriages 20 are positioned on the existing rail 16 on a girder 12 with spaces in a travel direction, the exchange rail 36 is horizontally fixed just above the horizontal support base 22a of the plural carriage bodies 22, and the exchange rail 36 is moved onto a boom by a trolley 18.

Description

  The present invention relates to a rail support cart and a rail exchanging method for exchanging a long rail of a bridge crane.

A bridge crane, for example, a container crane, is a device that is provided on a quay and is used for loading a load (for example, a container) on a berthed ship and landing a load from a ship.
The bridge crane includes a girder that is fixed to a leg portion having a traveling device so as to be movable along a quay and extends in a horizontal direction, and a boom that is connected to the girder so as to be raised and lowered.
The bridge crane further has a trolley that travels along the girder and the boom for carrying the cargo. The trolley is provided with a hanging tool for hanging the luggage. Luggage loaded or unloaded on a ship is suspended by a lifting tool and conveyed along with the movement of the trolley.

The bridge type crane mentioned above is disclosed by patent documents 1-3, for example.
Patent Document 4 discloses a rail exchanging device related to the present invention.

JP 2014-15327 A JP 2010-235309 A JP 2010-235308 A JP 2004-183386 A

  Rails for running the trolley are attached to the girder and boom of the bridge crane. The rail is easily worn because a trolley with a load (for example, a container) suspended frequently travels, and needs to be replaced periodically or as necessary.

  However, in the case of a large bridge crane, the height of the girder and the boom reaches 40 to 50 m, and this height corresponds to the height of a building of 10 stories or more. Moreover, the length of the boom also reaches, for example, 50 to 100 m, and the boom projects from the quay to the sea.

Therefore, conventionally, the rail replacement for the trolley of the bridge crane has been difficult because it is a work at a high place.
In particular, the rail on the boom is a long rail exceeding 20 m (for example, 24 m) for traveling stability of the trolley, and its weight reaches 1 ton or more (for example, about 1.2 ton).

Conventionally, in order to replace the long rail on the boom projecting from the quay to the sea, a large heavy machine (for example, a jib crane) reaching from the quay to the vicinity of the tip of the boom has been required.
In addition, when it is difficult to use a large heavy machine, it is necessary to transport a short rail divided from a long rail and weld it on a boom, which increases the number of weldings and may cause a deterioration in quality.

  The present invention has been developed to solve the above-described problems. That is, an object of the present invention is to provide a rail-supporting carriage and a rail exchanging method for a bridge crane that can easily exchange a long rail on a boom protruding from a quay to the sea without using a large heavy machine. It is in.

According to the present invention, a leg portion movable along the quay, a girder fixed to the leg portion and extending horizontally from the land side to the sea side, and connected to the sea side end portion of the girder so as to be swingable up and down. A boom that extends to the sea, a pair of existing rails that are provided on the girder and the boom and that extend horizontally from the girder to the boom when the boom is positioned horizontally, and are spaced on the rails in the width direction, and can run on the existing rails A rail support carriage for a bridge crane with a trolley,
A pair of bogie bodies which are located at a distance in the width direction and have a pair of wheels at a distance in the running direction and which can run on existing rails;
A connecting frame extending horizontally in the width direction and having both ends connected to the pair of carriage bodies,
A rail support cart for a bridge-type crane is provided, wherein the cart body has a horizontal support table that supports the replacement rail horizontally above the existing rail.

  The bogie body or the connecting frame has a derailment prevention plate that extends downward along the inner side of the existing rail and prevents the wheel from being detached from the existing rail.

  The total length in the traveling direction of the cart body or the connecting frame is set shorter than the gap in the width direction of the girder to which the existing rail is fixed.

Further, according to the present invention, a leg part movable along the quay, a girder fixed to the leg part and extending horizontally from the land side to the sea side, and connected to the sea side end part of the girder so as to be swingable up and down. It can run on the existing rail, a pair of existing rails that extend horizontally from the girder to the boom when the boom is positioned horizontally on the girder and the boom, and the rails are spaced apart in the width direction. A rail exchange method for a bridge-type crane equipped with a trolley,
(A) preparing a plurality of rail support carriages having a horizontal support base that supports the replacement rail horizontally above the existing rail;
(B) On the existing rail on the girder, a plurality of rail support carriages are positioned at intervals in the traveling direction,
(C) The replacement rail is horizontally supported and fixed directly above the horizontal support base of the plurality of bogie bodies,
(D) The rail support carriage or the exchange rail and the trolley are connected, and the exchange rail is moved onto the boom by the trolley,
(E) A rail exchanging method for a bridge crane is provided, in which an existing rail is exchanged for an exchange rail on a boom.

Install a temporary stand to temporarily place the existing rail and replacement rail on the boom,
In (E) above,
(E1) Temporarily place the replacement rail on the rail support carriage on the temporary table,
(E2) Temporarily place the existing rail on the temporary table, and then fix the replacement rail on the temporary table to the position where the existing rail was located,
(E3) The existing rail on the temporary mounting table is horizontally supported and fixed directly above the horizontal support table of the plurality of cart bodies,
(F) Move the trolley to the top of the girder, and remove the existing rail and rail support carriage on the girder.

In the rail support cart of the present invention, since the cart body has a horizontal support platform that supports the replacement rail horizontally above the existing rail, even if the weight of the replacement rail reaches 1 ton or more, the weight of the replacement rail The generation of the rotational moment due to can be suppressed to zero or to the minimum.
Therefore, the cart body only needs to be rigid enough to directly transmit the weight of the replacement rail (for example, the long rail) to the existing rail located directly below the replacement rail, and the cart body can be made smaller and lighter.

  Further, since the bending moment due to the rotational moment does not act on the connecting frame that connects the pair of cart bodies, the connecting frame can be made smaller and lighter.

  Therefore, since the whole rail support cart can be made small and light, the rail support cart can be raised and lowered with the ground (quay) using a small crane or chain block on the girder.

  Further, according to the rail exchanging method of the present invention, a plurality of rail support carts are positioned on the existing rails on the girder at intervals in the traveling direction, and the exchange rails are horizontally placed directly above the existing rails of the plurality of cart bodies. The replacement rail is moved onto the boom by the trolley. Accordingly, since the replacement rail can be transported to the boom without using a large heavy machine, the existing rail can be easily replaced with the replacement rail on the boom.

  Therefore, according to the present invention, it is possible to easily replace the long rail on the boom protruding from the quay to the sea without using a large heavy machine.

1 is an overall configuration diagram of a bridge crane to which the present invention is applied. It is an AA arrow line view of FIG. It is a block diagram of the rail support trolley | bogie by this invention. It is a whole flowchart of the rail replacement | exchange method by this invention. It is explanatory drawing of the preparation process on a girder. It is explanatory drawing of the rail replacement | exchange process on a boom.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the common part in each figure, and the overlapping description is abbreviate | omitted.

FIG. 1 is an overall configuration diagram of a bridge crane 10 to which the present invention is applied.
In this figure, 1 is a quay and 2 is a ship (for example, a container ship). The bridge crane 10 includes a leg 11, a girder 12, a boom 14, an existing rail 16, and a trolley 18.

The leg portion 11 is configured to be movable along the quay 1.
The girder 12 is fixed to the leg 11 and extends horizontally from the land side to the sea side.
The boom 14 is connected to the sea side end of the girder 12 so as to be swingable up and down, and extends to the sea side.
The existing rail 16 is provided on the girder 12 and the boom 14, and extends horizontally from the girder 12 to the boom 14 when the boom 14 is positioned horizontally.

FIG. 2 is an AA arrow view of FIG.
In this figure, a pair of existing rails 16 are provided, and are positioned with a rail interval L therebetween in the width direction. The rail interval L is, for example, 6 m or more (for example, 6550 mm).
The trolley 18 is configured to be able to travel on an existing rail by a traversing rope (not shown), for example. The trolley 18 is provided with a hanger 19 for suspending the luggage 3 (for example, a container).
The boom 14 to which the pair of existing rails 16 is fixed has a gap inside the pair of existing rails 16 over the entire travel range of the trolley 18. This gap is inside the rail interval L of the existing rail 16 and has an interval of, for example, 6 m or more. The same applies to the girder 12 to which the pair of existing rails 16 are fixed.
With this configuration, the trolley 18 travels horizontally between the girder 12 and the boom 14 in a state where the luggage 3 (for example, a container) is suspended by a lifting tool 19, and loads the luggage 3 (for example, a container) on the ship 2 that has berthed. And the cargo 3 can be unloaded from the ship 2.

  FIG. 3 is a block diagram of the rail support carriage 20 according to the present invention. In this figure, (A) is a BB arrow view of FIG. 1, (B) is an enlarged view of (A), and (C) is a plan view seen from above (B).

  In FIG. 3, the rail support cart 20 of the present invention includes a pair of cart bodies 22 and a connecting frame 24.

The pair of bogie bodies 22 has a pair of wheels 23 that are positioned with a rail interval L in the width direction and with a wheel interval e in the traveling direction, and are configured to be able to travel on the existing rails. The rail interval L is the rail interval L of the existing rail 16.
The wheel 23 is a driven wheel, and the carriage main body 22 is not provided with a driving device or a driving rope for traveling. Accordingly, the carriage main body 22 is configured to be able to travel on the existing rail only when pulled or pushed by another device (the trolley 18) as will be described later.

  The carriage main body 22 further includes a horizontal support base 22 a that supports the replacement rail 36 horizontally just above the existing rail 16. In this example, the horizontal support base 22a is a single horizontal plate, but may be other steel (for example, an angle material) as long as the upper surface is horizontal.

In this example, the carriage main body 22 further includes a derailment prevention plate 25 that extends downward along the inside of the existing rail 16 and prevents the wheels 23 from being detached from the existing rail 16. In this example, the derailment prevention plate 25 is a single vertical plate welded to the horizontal support base 22a, but may be a steel plate (for example, an angle member) integrated with the horizontal support base 22a.
The derailment prevention plate 25 preferably has a gap (for example, 5 to 15 mm) so as not to interfere with the inner surface of the existing rail 16. Further, in order to increase the rigidity of the anti-wheel removal plate 25, a reinforcing material may be provided.
Note that the anti-wheel removal plate 25 may be provided on the connecting frame 24 without being provided on the cart body 22.

  The connecting frame 24 is two angle members in this example, extends horizontally in the width direction, and both ends are connected to a pair of carriage main bodies 22. This connection may be rigidly joined by welding or bolts and nuts so that the carriage body 22 does not rotate or swing around the axis of the existing rail 16.

  Further, in this example, the total length in the traveling direction of the rail support carriage 20 (the vertical length in FIG. 3C) is, for example, 600 to 1000 mm, and the gap in the width direction of the girder 12 to which the existing rail 16 is fixed (described above). In the example, it is set shorter than 6 m).

With the above-described configuration, the rail support carriage 20 of the present invention has the carriage main body 22 having the horizontal support base 22a that horizontally supports the replacement rail 36 directly above the existing rail 16, so that the weight of the replacement rail 36 is 1 ton. Even when the above is reached, the generation of the rotational moment due to the weight of the exchange rail 36 can be suppressed to zero or to the minimum. This rotational moment is a moment for rotating the cart body 22 about the axis of the existing rail 16.
Therefore, the cart body 22 only needs to be rigid enough to directly transmit the weight of the replacement rail 36 (for example, the long rail) to the existing rail 16 located directly below the replacement rail 36, and the cart body 22 can be made smaller and lighter.

  Further, since the bending moment caused by the rotational moment does not act on the connecting frame 24 that connects the pair of cart bodies 22, the connecting frame 24 can be made small and light.

  Therefore, the rail support cart 20 as a whole can be made small and light, and the rail support cart 20 can be raised and lowered with the ground (the quay 1) using a small crane or chain block on the girder.

FIG. 4 is an overall flowchart of the rail replacement method according to the present invention. In this figure, the rail exchanging method of the present invention comprises steps (steps) S1 to S8.
FIG. 5 is an explanatory diagram of a preparation process on a girder, (A) is a view taken along arrow BB in FIG. 1, and (B) is a side view.
FIG. 6 is an explanatory view of the rail replacement process on the boom, (A) is a view taken along the line AA of FIG. 1, and (B) is a side view.
Hereinafter, the rail replacement method of the present invention will be described with reference to FIGS.

  The rail replacement method of the present invention includes a preparation process on a girder and a rail replacement process on a boom.

A preparation process consists of each step (process) of S1-S5.
In step S1, a plurality of rail support carts 20 described above are prepared. It is preferable to prepare two or more rail support carts 20 according to the length and weight of the replacement rail 36.
In step S2, as shown in FIG. 6A, a temporary placement table 32 for temporarily placing the existing rail 16 and the replacement rail 36 is installed on the boom. If there is a space for temporary placement on the existing boom, the provision of the temporary placement table 32 may be omitted.
In step S3, as shown in FIG. 5B, a plurality (three in this figure) of rail support carriages 20 are positioned on the existing rails on the girder at intervals in the traveling direction (left and right in the figure). . This interval is preferably constant.
In step S4, as shown in FIGS. 5A and 5B, the replacement rail 36 is horizontally supported and fixed on the horizontal support bases of the plurality of carriage main bodies 22. For this fixing, it is preferable to use a known clamping device for fixing the rail.
In step S5, the rail support carriage 20 or the exchange rail 36 and the trolley 18 are connected by the connecting member 34.

When the existing rail 16 to be replaced is located near the rear end of the boom 14, as shown in FIG. 5B, the trolley 18 is disposed on the sea side of the girder 12 and a plurality of bogie bodies 22 are disposed on the land side thereof. It is good to arrange.
Conversely, when the existing rail 16 to be replaced is located near the tip of the boom 14, the trolley 18 is preferably disposed on the land side of the girder 12 and a plurality of bogie bodies 22 are disposed on the sea side thereof.
Note that the end of the rail support carriage 20 or the exchange rail 36 closest to the trolley 18 and the trolley 18 are preferably connected by a connecting member 34 (for example, a bar) that is not easily buckled and has high tensile strength.

The rail replacement process includes steps (processes) S6 and S7.
In step S6, the trolley 18 is moved onto the boom as shown in FIG. The trolley 18 is pulled or pushed by the movement of the trolley 18, and the plurality of carriage bodies 22 and the replacement rails 36 thereon also move to the boom.
In step S7, the existing rail 16 is replaced with the replacement rail 36 on the boom.

In FIG. 4, step S7 includes steps (steps) S7-1 to S7-3.
In step S7-1, as shown in FIG. 6A, the replacement rail 36 on the rail support carriage is temporarily placed on the temporary placement base 32 using a small crane or chain block 38.
In step S7-2, the rail support carriage 20 is moved to temporarily place the existing rail 16 on the temporary table 32, and then the replacement rail 36 on the temporary table is fixed at the position where the existing rail 16 was located.
In step S7-3, the rail support carriage 20 is moved again, and the existing rails 16 on the temporary placement stands are horizontally supported and fixed directly above the horizontal support stands 22a of the plurality of carriage main bodies 22.
In the steps S7-1 to S7-3, the existing rail 16 is replaced with the replacement rail 36, and the replaced existing rail 16 is horizontally supported directly above the horizontal support bases 22a of the plurality of carriage bodies 22. Can be fixed.

In FIG. 4, the rail exchanging method of the present invention further includes step S8.
In step S8, the trolley 18 is moved onto the girder, and the existing rail 16 and the rail support carriage 20 are removed on the girder. This removal can be carried out on the girder using a small crane or chain block.

  According to the rail exchanging method of the present invention described above, the plurality of rail support carriages 20 are positioned on the existing rails on the girder at intervals in the traveling direction, and the exchange rails 36 are arranged on the existing rails 16 of the plurality of carriage main bodies 22. The replacement rail 36 is moved onto the boom by the trolley 18 while being supported horizontally and fixed directly above. Therefore, the replacement rail 36 can be transported up to the boom without using a large heavy machine, so that the existing rail 16 can be easily replaced with the replacement rail 36 on the boom.

  Therefore, according to the present invention, the long rail on the boom protruding from the quay 1 to the sea can be easily replaced without using a large heavy machine.

  Note that the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made without departing from the gist of the present invention.

L rail interval, e wheel interval, 1 quay, 2 ship (container ship),
3 Luggage (container), 10 bridge crane, 11 legs,
12 girders, 14 booms, 16 existing rails, 18 trolleys,
19 Suspension tool, 20 Rail support cart, 22 Cart body,
22a horizontal support stand, 23 wheels (driven wheel), 24 connecting frame,
25 Derailment prevention plate, 32 Temporary table, 34 Connecting member, 36 Replacement rail,
38 chain block

Claims (5)

A leg that is movable along the quay, a girder that is fixed to the leg and extends horizontally from the land side to the sea side, and a boom that is connected to the sea side end of the girder so as to swing up and down and extends to the sea side A bridge comprising a pair of existing rails that are provided on the girder and the boom and that extend horizontally from the girder to the boom when the boom is positioned horizontally and that are spaced apart from each other in the width direction, and a trolley that can travel on the existing rails Type crane rail support carriage,
A pair of bogie bodies which are located at a distance in the width direction and have a pair of wheels at a distance in the running direction and which can run on existing rails;
A connecting frame extending horizontally in the width direction and having both ends connected to the pair of carriage bodies,
The bridge main body has a horizontal support base for horizontally supporting the replacement rail directly above the existing rail, and is a rail support truck for a bridge crane.   2. The bridge type according to claim 1, wherein the carriage main body or the connection frame has a derailment prevention plate that extends downward along the inside of the existing rail and prevents the wheel from being detached from the existing rail. Crane rail support cart.   The bridge support rail for a bridge-type crane according to claim 1, wherein a total length of the carriage main body or the connecting frame in a traveling direction is set shorter than a gap in a width direction of a girder to which the existing rail is fixed. . A leg that is movable along the quay, a girder that is fixed to the leg and extends horizontally from the land side to the sea side, and a boom that is connected to the sea side end of the girder so as to swing up and down and extends to the sea side A bridge comprising a pair of existing rails that are provided on the girder and the boom and that extend horizontally from the girder to the boom when the boom is positioned horizontally and that are spaced apart from each other in the width direction, and a trolley that can travel on the existing rails A rail exchange method for a type crane,
(A) preparing a plurality of rail support carriages having a horizontal support base that supports the replacement rail horizontally above the existing rail;
(B) On the existing rail on the girder, a plurality of rail support carriages are positioned at intervals in the traveling direction,
(C) The replacement rail is horizontally supported and fixed directly above the horizontal support base of the plurality of bogie bodies,
(D) The rail support carriage or the exchange rail and the trolley are connected, and the exchange rail is moved onto the boom by the trolley,
(E) A rail exchanging method for a bridge crane, wherein an existing rail is exchanged for an exchange rail on a boom. Install a temporary stand to temporarily place the existing rail and replacement rail on the boom,
In (E) above,
(E1) Temporarily place the replacement rail on the rail support carriage on the temporary table,
(E2) Temporarily place the existing rail on the temporary table, and then fix the replacement rail on the temporary table to the position where the existing rail was located,
(E3) The existing rail on the temporary mounting table is horizontally supported and fixed directly above the horizontal support table of the plurality of cart bodies,
(F) The rail exchanging method for a bridge crane according to claim 4, wherein the trolley is moved onto the girder and the existing rail and the rail support carriage are removed on the girder.

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