JP6919858B2 - Trolley and trolley transportation method - Google Patents

Description

The present invention relates to a method for transporting a trolley and a trolley traversing along a horizontal member of a crane, and more particularly to a method for transporting a trolley and a trolley that can suppress the transportation cost.

Various portal cranes having a trolley traversing along a horizontal member such as a girder have been proposed (see, for example, Patent Document 1).

This trolley is used when handling a 40ft container, a 20ft container, or the like. Since the trolley is relatively large, for example, when trying to transport the trolley by land, it is necessary to block the road and transport it by a special vehicle or the like. When trying to transport a trolley by sea, it was necessary to transport it on a dedicated pontoon.

Therefore, it has been difficult to adopt a manufacturing process in which the leg structure of the gantry crane and the trolley are manufactured in separate manufacturing plants, transported to the assembly plant, and then assembled. Conventionally, when manufacturing a trolley, it was manufactured together with the leg structure of a portal crane at one manufacturing plant.

Japanese Patent Application Laid-Open No. 2013-209213

The present invention has been made in view of the above problems, and an object of the present invention is to provide a trolley and a method for transporting the trolley, which can suppress the transportation cost.

The trolley of the present invention for achieving the above object is a trolley configured to be traversable along a horizontal member extending in the transverse direction, in which the trolley is composed of a trolley that handles a 40 ft container and is composed of a trolley. A plurality of trolley bodies formed by dividing the trolley, a connecting portion for connecting the adjacent trolley bodies, a drum wound with a wire rope for suspending a hanger, and a motor for powering the drum. The hoisting mechanism is provided, and the trolley main body is connected to the first trolley main body in which the hoisting mechanism is installed and the second trolley main body via the connecting portion. The trolley main body is configured to have a size that can be stored in a 40ft container.

Method of transporting trolley in order to achieve the above object, in the method for transporting the transverse configured to allow the trolley along the horizontal members constituting the crane, the trolley plurality of composed trolley for handling a 40ft container A hoisting mechanism including a drum on which a wire rope for suspending a hanging tool is wound by dividing into a trolley main body and a motor for powering the drum is installed in one of the trolley main bodies, and the hoisting mechanism is provided. The first trolley main body to which is installed and the second trolley main body connected to the first trolley main body via a connecting portion constitute a plurality of the trolley main bodies, and the first trolley main body and the second trolley main body are formed. Each of the above is stored in a 40ft container and transported to the destination, and then the plurality of the trolley main bodies are connected to each other at the destination.

According to the present invention, since the trolley can be stored in a 40ft container and transported, it is advantageous to suppress the transportation cost of the trolley.

It is explanatory drawing which illustrates the trolley of this invention from the side view. It is explanatory drawing which illustrates the trolley of FIG. 1 in a plan view. It is explanatory drawing which illustrates the state which disassembled the connecting part. It is explanatory drawing which illustrates the state which disassembled the trolley of FIG. It is explanatory drawing which illustrates the state in which the disassembled trolley of FIG. 4 is stored in a container. It is explanatory drawing which illustrates the trolley of another embodiment from the side view. It is explanatory drawing which illustrates the trolley of FIG. 6 in a plan view.

Hereinafter, the trolley of the present invention and the method of transporting the trolley will be described based on the embodiment shown in the figure. In the figure, the traversing direction, which is the moving direction of the trolley, is indicated by an arrow x, the traveling direction crossing the traversing direction x at a right angle is indicated by an arrow y, and the vertical direction is indicated by an arrow z.

As illustrated in FIGS. 1 and 2, the trolley 1 of the present invention includes a hanger 2 suspended by a wire rope R, and traverses over a horizontal member 3 extending along the traversing direction x. It is configured to be possible. The trolley 1 traverses and carries out cargo handling work using the hanger 2. When the trolley 1 is installed on, for example, a gantry crane, the trolley 1 performs cargo handling work of a container by a hanger 2 composed of a spreader. In this embodiment, the trolley 1 is a trolley that handles a 40 ft container.

The trolley 1 of the present invention is not limited to the one installed on a portal crane, and can be applied to other cranes as long as it is configured to be able to travel on the horizontal member 3. For example, it can be used as a trolley 1 for a quay crane or an overhead crane. The hanger 2 may be configured by a spreader that handles a 40ft container, a 20ft container, or the like, a bucket that handles bulk cargo such as coal, or a hook that hangs a wire around an iron pipe or the like.

The trolley 1 is divided into a plurality of trolley main bodies 4 on a plane orthogonal to the transverse direction x. In this embodiment, the trolley 1 is divided into three trolley bodies 4a, 4b, and 4c. The first trolley main body 4a arranged at the center in the transverse direction x includes a hoisting mechanism 5 for hoisting and lowering the hanger 2.

As illustrated in FIG. 2, the hoisting mechanism 5 includes a drum 6 on which a wire rope R is wound to wind and unwind the wire rope R, a speed reducer 7 connected to the drum 6, and the speed reducer 7. It includes a motor 8 connected to the speed reducer 7. In this embodiment, two drums 6 are connected to the speed reducer 7. The motor 8 powers the drum 6 via the speed reducer 7.

The number of drums 6 constituting the hoisting mechanism 5 is not limited to two, and may be one or three or more. Further, the motor 8 may be directly connected to the drum 6 without going through the speed reducer 7.

The drum 6 and the motor 8 of the embodiment illustrated in FIG. 2 are arranged on the first trolley main body 4a in a state where the extending direction of the rotating shaft is parallel to the traveling direction y. It is advantageous to reduce the size of the hoisting mechanism 5 in the transverse direction x. With this configuration, all the devices constituting the hoisting mechanism 5 can be installed in the first trolley main body 4a. The trolley main body 4 on which the hoisting mechanism 5 is installed is not limited to the first trolley main body 4a. The hoisting mechanism 5 may be installed on another trolley main body 4b or 4c.

The first trolley main body 4a includes four wheels 9 which are arranged at four corners in a plan view and are configured to be able to touch the horizontal member 3 so as to be grounded. Since each of the four wheels 9 includes a drive motor 10, it functions as a drive wheel 9.

The second trolley main body 4b is arranged on one side of the first trolley main body 4a in the transverse direction x. The second trolley main body 4b is provided with two wheels 9 on a side portion opposite to the side adjacent to the first trolley main body 4a in the transverse direction x. The wheels 9 installed on the second trolley main body 4b are not provided with a drive motor.

A third trolley main body 4c is arranged on the other side of the first trolley main body 4a in the transverse direction x. Like the second trolley body 4b, the third trolley body 4c also has two wheels 9. In FIG. 1, for the sake of explanation, a part of the wheels 9 installed on the second trolley main body 4b and the third trolley main body 4c is shown by broken lines.

A driver's cab 11 is installed on the bottom surface of the third trolley main body 4c. The cab 11 is for, for example, a driver of a gantry crane to board and operate the gantry crane. In the present specification, the trolley 1 is a concept including a plurality of trolley main bodies 4 and a hoisting mechanism 5, and does not include an cab 11.

Although not particularly shown, the first trolley main body 4a, the second trolley main body 4b, and the third trolley main body 4c each include a plurality of sheaves for hanging the wire rope R.

For example, adjacent trolley main bodies 4a such as the first trolley main body 4a and the second trolley main body 4b are connected to each other via a connecting portion 12. As illustrated in FIG. 2, in this embodiment, adjacent trolley main bodies 4 are connected to each other by two connecting portions 12 installed side by side in the traveling direction y.

As illustrated in FIG. 3, the connecting portion 12 includes a pin member 13 whose axial direction is the traveling direction y, and a plate-shaped member 14 installed on the adjacent trolley main body 4, respectively. The plate-shaped member 14 is formed with through holes 15 through which the pin member 13 penetrates.

In this embodiment, plate-shaped members 14 having planes parallel to the transverse direction x and the vertical direction z are installed on the upper surface of the trolley main body 4, respectively. A pair of plate-shaped members 14 are arranged in the first trolley main body 4a in a state where the axial directions of the through holes 15 are the same. A plate-shaped member 14 having a protruding portion protruding toward the first trolley main body 4a is arranged in the second trolley main body 4b. After matching the axial directions of the through holes 15 of the three plate-shaped members 14, the pin member 13 is passed through the through holes 15 to bring the connecting portion 12 into a connected state. Adjacent trolley bodies 4 are connected to each other in a state where they can be tilted around an axis parallel to the traveling direction y with respect to the connecting portion 12.

As illustrated in FIGS. 1 and 2, the second trolley main body 4b and the third trolley main body 4c are in a state in which their own weights are supported by the connecting portion 12 and the wheels 9. The number of connecting portions 12 installed side by side in the traveling direction y between the trolley main bodies 4 is not limited to two, and may be one or three or more.

As illustrated in FIG. 4, the trolley 1 can be separated into a plurality of trolley main bodies 4 by releasing the connection by the connecting portion 12. Specifically, the connection between the trolley bodies 4 can be released by pulling out the pin member 13 constituting the connecting portion 12 from the plate-shaped member 14. Since the trolley 1 can be transported in a state of being separated into a plurality of trolley main bodies 4, the trolley 1 can be easily transported. At this time, the driver's cab 11 can be separated from the third trolley main body 4c.

As illustrated in FIG. 5, it is desirable that the size of each trolley main body 4 is large enough to be stored in a 40ft container C. Specifically, the trolley main body 4 is configured to have a size within a range of 12033 mm in the traveling direction y, 2352 mm in the transverse direction x, and 2386 mm in the vertical direction z. The above length is a numerical value corresponding to the internal dimension of the 40ft container C. It is desirable that the first trolley main body 4a is configured to have a size that can be stored in the 40ft container C with the hoisting mechanism 5 installed. In FIG. 5, the outer shape of the 40ft container C is shown by a broken line for explanation.

Since each trolley main body 4 can be transported in a state of being stored in the 40ft container C, the trolley 1 can be transported by a truck or a container ship in the same manner as the transportation of a normal 40ft container. The trolley 1 can be easily completed by transporting the plurality of trolley main bodies 4 and the cab 11 and assembling them at the destination. After the trolley 1 is assembled, a wire rope is hung around the sheave installed in the trolley 1 to install the hanger 2. The first trolley main body 4a can be transported with the hoisting mechanism 5 installed. Therefore, it is not necessary to adjust the installation position of the equipment constituting the hoisting mechanism 5 or the equipment constituting the hoisting mechanism 5 at the destination. It is advantageous for simplifying the assembly work at the destination.

Since the trolley 1 can be divided into a plurality of trolley main bodies 4 and transported, it is possible to manufacture the trolley 1 while moving a plurality of factories. Compared with the conventional method in which machining, assembly of the trolley 1, and installation and adjustment of the hoisting mechanism 5 had to be performed at one factory, the trolley 1 can be manufactured more efficiently.

Further, it is possible to adopt a manufacturing process in which a leg structure such as a gantry crane and a trolley 1 are manufactured in separate manufacturing factories, transported to an assembly factory, and then assembled. Since each of the leg structure and the trolley 1 can be manufactured in a factory suitable for manufacturing, it is advantageous for efficiently manufacturing a crane or the like equipped with the trolley 1.

Since the container can be used when transporting the trolley 1 to the destination, it is advantageous to suppress the transportation cost of the trolley 1. Conventionally, the trolley 1 has been transported by a pontoon or the like. The cost of transporting in a container is extremely low compared to transporting in a pontoon. The same effect as described above can be obtained even when the size of each trolley main body 4 can be stored in a container larger than the 40 ft container such as a 45 ft container, a 50 ft container, or a high cube container.

Furthermore, the leg structure and traveling device of the gantry crane are also divided into sizes that can be stored in the 40ft container, and if they have a configuration in which they are connected by a connecting part, all of the gantry cranes are in the 40ft container. Can be stored and transported in. It is advantageous to reduce the transportation cost of the gantry crane.

The number of the trolley main body 4 constituting the trolley 1 is not limited to three, and may be four or more. Further, the direction in which the trolley 1 is divided into the plurality of trolley main bodies 4 is not limited to the direction in which the trolley 1 is divided by a plane orthogonal to the transverse direction x. For example, it may be divided in another direction as long as the trolley main body 4 has a size that can be stored in the 40ft container, such as dividing by a plane orthogonal to the traveling direction y.

As illustrated in FIGS. 6 and 7, the trolley 1 may be composed of only one trolley main body 4a. For example, when the trolley 1 is installed in a gantry crane that performs cargo handling work by remote control or automatic operation, it is not necessary to install the cab 11 in the trolley 1. Further, when the trolley 1 is installed on the overhead crane, the cab 11 is not required. In such a case, the trolley 1 does not have the third trolley main body 4c to which the driver's cab 11 is connected.

The second trolley main body 4b is not provided with equipment necessary for cargo handling such as a hoisting mechanism 5. Therefore, the trolley 1 may not be provided with the second trolley main body 4b.

The trolley 1 of this embodiment is configured to have a size that can be stored in a 40ft container C. Desirably, the trolley 1 is configured to have a size that can be stored in the 40ft container C with the hoisting mechanism 5 installed.

The connecting portion 12 of the present invention is not limited to the combination of the pin member 13 and the plate-shaped member 14. The connecting portion 12 may have a configuration in which a plurality of trolley main bodies 4 can be integrally moved when the trolley main bodies 4 are connected to each other and the trolley 1 moves in the transverse direction x. For example, the connecting portion 12 may be composed of a chain or a wire that connects the facing surfaces of the trolley main body 4. When the connecting portion 12 is composed of a chain or the like and cannot support the load of the trolley main body 4, a wheel 9 for supporting the load of the trolley main body 4 is appropriately added to the lower surface of the trolley main body 4.

The present invention is not limited to the trolley 1 including the drive motor 10. As illustrated in FIGS. 6 and 7, the present invention can also be applied to a trolley 1 that moves along a horizontal member 3 by a traversing rope R1 that is hung around the trolley 1. The present invention may be applied to a crane including a traversing rope R1 of a trolley 1 and a drum around which the traversing rope R1 is wound, such as a quay crane.

The present invention is not limited to the trolley 1 provided with the wheels 9. The present invention may be applied to a trolley 1 in which a lubricating material such as nylon is arranged on the lower surface and slidable along the horizontal member 3.

1 Trolley 2 Hanger 3 Horizontal member 4 Trolley body 4a 1st trolley body 4b 2nd trolley body 4c 3rd trolley body 5 Hoisting mechanism 6 Drum 7 Reducer 8 Motor 9 Wheel 10 Drive motor 11 Driver's cab 12 Connection part 13 Pin member 14 Plate-shaped member 15 Through hole x Traverse direction y Travel direction z Vertical direction R Wire rope R1 Horizontal rope C Container

Claims (6)

In a trolley configured to be traversable along a horizontal member extending in the traverse direction
The trolley is composed of a trolley that handles a 40ft container, and a plurality of trolley main bodies that are formed by dividing the trolley, a connecting portion that connects adjacent trolley main bodies, and a wire that suspends a hanger. It has a hoisting mechanism consisting of a drum around which a rope is wound and a motor that powers this drum .
The trolley main body is arranged at four corners in a plan view, and the first trolley main body on which four wheels and the hoisting mechanism are installed so as to be installable on the horizontal member, and the connection to the first trolley main body. It has a second trolley body that is connected via a part,
A trolley characterized in that a plurality of the trolley main bodies are each configured to have a size that can be stored in a 40 ft container. Before SL drum and the rotation axis direction of the motor, trolley according to claim 1, wherein the winding mechanism in a state of parallel to the traveling direction transverse at a right angle to the transverse direction is configured. The first trolley main body has a configuration in which a drive motor for driving the wheels is installed.
The trolley according to claim 1 or 2, wherein the second trolley main body has a wheel configured to be grounded on the horizontal member and has a configuration in which a driving motor for driving the wheel is not installed. Any of claims 1 to 3 in which the trolley body has a size of 2352 mm or less in the transverse direction, 12033 mm or less in the traveling direction perpendicular to the transverse direction, and 2389 mm or less in the vertical direction. trolley according to any. In the method of transporting a trolley that can traverse along the horizontal members that make up the crane,
A hoisting mechanism consisting of a drum on which a wire rope for suspending a hanger is wound and a motor for powering the drum by dividing the trolley composed of a trolley for handling a 40ft container into a plurality of trolley bodies. Is installed in one of the trolley bodies,
A first trolley main body in which four wheels arranged at four corners in a plan view and capable of being installed on the horizontal member and the hoisting mechanism are installed, and the first trolley main body is connected via a connecting portion. The second trolley main body constitutes a plurality of the trolley main bodies, and
A method for transporting a trolley, characterized in that the first trolley main body and the second trolley main body are each stored in a 40ft container and transported to a destination, and then a plurality of the trolley main bodies are connected to each other at the destination. .. The first trolley main body has a configuration in which a drive motor for driving the wheels is installed in advance.
The method for transporting a trolley according to claim 5, wherein the second trolley main body has a configuration in which wheels that can be grounded are installed in advance on the horizontal member and a driving motor that drives the wheels is not installed.

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