JP2003137494A - Feeder system of tire type crane - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a feeder system of a tire type crane capable of preventing generation of exhaust gas and noise, and preventing damage on a feeding cable. SOLUTION: The tire type crane travels along travel lanes a1-a5 provided on a container terminal B, and loads and unloads a container by a trolley 2. Guide rails 15a, 15b and trolley wires 16a-16d for feeding are extended in a periphery of the travel lanes a1-a5. A current collector 8 is mounted on a crane main body 1, and the current collector 8 is in contact with the trolley wires 16a-16d for feeding to feed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply device for a tire crane used for storing containers at a container terminal.

[0002]

2. Description of the Related Art Conventionally, as one of the cargo handling devices for storing containers at a container terminal, a trolley is arranged on a gate-shaped crane body, and tire-type running wheels are provided on legs constituting the crane body. Tire-type cranes are known.

As shown in FIG. 6, in a tire type crane A, a trolley 2 is arranged on an upper portion of a gate-shaped crane main body 1, and a tire type running wheel 4 is provided on a lower portion of a leg body 3 constituting the crane main body 1. I have it.

The tire-type crane A supplies electric power to various driving devices by driving a generator engine (not shown) in the engine room 5, and, for example, as shown in FIG. The vehicle travels along the traveling lanes a1 to a5 provided in the above, and the containers are loaded and unloaded by the trolley 2 and the spreader 6 at predetermined positions.

On the other hand, as a means for supplying power to the tire-type crane A, as described in Japanese Patent Laid-Open No. 2000-272868, a power supply device is provided on the ground or underground, and a power supply cable is arranged on the crane body, It is also known that a connector attached to the power supply cable connects the power supply cable and the power supply device to supply power.

[0006]

However, in the conventional power feeding device for a tire type crane, when a generator engine (not shown) mounted on the crane body 1 is driven to supply power, the generator engine is used. In addition to the need for regular maintenance and overhaul, the running cost increases because the fuel cost increases. In addition, there is a problem that the production cost is increased because the environment is deteriorated due to the generation of exhaust gas and noise and the crane body has to have a rigid structure.

On the other hand, in the case of connecting the power supply device and the power supply cable to supply power, the crane main body needs a device for accommodating the power supply cable such as a cable reel, which not only complicates the device. There was a problem that the power supply cable might be damaged.

The present invention has been made to solve such a conventional problem, and an object thereof is not only generation of exhaust gas and noise when power is supplied to a tire crane. Another object of the present invention is to provide a power supply device for a tire-type crane, which can reduce the maintenance cost and which does not damage the power supply cable.

[0009]

In order to solve the above problems, the present invention is constructed as follows.

That is, (1) In a tire type crane which is configured to travel along a traveling lane provided in a container terminal and to load and unload containers by a trolley and a spreader, guides are provided near the traveling lane. A tire-type crane characterized by extending a rail and a power feeding trolley wire, attaching a current collector to the crane body, and bringing the current collector into contact with the power feeding trolley wire for power feeding. It is a power feeding device.

(2) The guide rail and the power supply trolley wire are arranged in the passage of a current collector extending along the traveling lane, and the power supply for the tire crane is described in (1). It is a device.

(3) The power supply device for a tire crane according to (1) or (2), characterized in that the current collector is attached to the crane body so as to be vertically and horizontally swingable.

(4) A power supply device for a tire crane according to (1), (2) or (3), characterized in that a guide roller is attached to the current collector.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

Devices having the same functions as those of the conventional tire-type crane are designated by the same reference numerals and detailed description thereof will be omitted.

FIG. 1 is a plan view of the container terminal. The container terminal B has five traveling lanes a1.
To a5 are provided. A selected number of tire type cranes A are arranged in each of the traveling lanes a1 to a5. In addition, on the side or just beside each of the traveling lanes a1 to a5, there is a passage 9 with which a current collector 8 described later comes into contact.
a to 9e are extended.

Since the passages 9a-9e have the same structure,
Here, the structure of only the passage 9c will be described. As shown in FIG. 4, the passage 9c is composed of an outer wall 11, an upper wall 12, and an inner wall 14 having an opening 13,
Both ends thereof are open. Guide rails 15a and 15b and a plurality of power feeding trolley wires 16a to 16d are attached above and below the inner surface of the outer wall 11. Further, guide portions 17 and 17b (see FIG. 2) are provided at the end portions of the guide rails 15a and 15b.

As shown in FIG. 5, the current collector 8 applies a predetermined pressing force P to each of the feeding trolley wires 16a to 16d.
And a plurality of terminals 18a to 18d that are in contact with each other
It is composed of a pantograph mechanism 19 to which a to 18d are attached, and an attachment member 21 for attaching the pantograph mechanism 19 to the horizontal shaft 20.

As shown in FIG. 5, the horizontal shaft 20 is composed of a parallel link mechanism in which two of them are arranged in parallel, and the other end of the outer shaft 24 constitutes a vertical shaft 23 via a link 22.
Is attached to. 25 is a hydraulic cylinder,
While rotating the horizontal axis 20, the pantograph mechanism 1
As a result, the terminals 18a to 18d are brought into contact with the feeding trolley wires 16a to 16d with a predetermined pressing force P, and the positions thereof are held.

As shown in FIG. 4, the vertical shaft 23 is vertically moved by an inner shaft 27 attached to the lower part of the crane body 1 via supporting members 26a and 26b, and a hydraulic cylinder 28 along the inner shaft 27. It is composed of an outer cylinder 24. A fixing member 29 fixes the passage 9a and the passage 9b.

In the above description, in each of the traveling lanes a1 to a5, the passages 9a to 9e are provided over the entire length thereof.
Although the case of extending the passage has been described, this passage 9a-9
If desired, e may be arranged so as to have a predetermined interval in the longitudinal direction of the traveling lanes a1 to a5. That is, in order to improve the efficiency of the tire type crane A,
The vehicle may be moved laterally from the traveling lane a1 to the traveling lane a2. In order to enable this lateral movement, the passage 9a ...
It is also possible to provide an interval through which the tire-type crane A can pass in each of 9e. In this case, it is preferable that the crane main body 1 be equipped with an engine for an auxiliary power generator to supply electric power during lateral movement.

In this example, the case has been described in which the passages 9a to 9e are composed of the upper wall 12, the outer wall 11, and the inner wall 14, respectively. However, the passages 9a to 9e are not limited to the walls, but to the frame. There is no problem even if composed by the body.

Next, the operation of the power feeding device for the tire crane will be described.

Now, the tire type crane A is used in the traveling lane a3.
In the case of supplying power by means of, the current collector 8 is transferred from the open end portion of the passage 9c to the inside thereof, and the hydraulic cylinder 28 is used for vertical alignment. Then, the hydraulic cylinder 25 is operated to bring the terminals 18a to 18d into contact with the power feeding trolley wires 16a to 16d with a predetermined pressing force P, whereby power is supplied.

The tire-type crane A travels in the traveling lane a3 to carry out cargo handling. During this traveling process, the current collector 8 and the feeding trolley wire 16a ... When a change occurs in the distance from 16d, if the change is in the horizontal direction,
The hydraulic cylinder 25 and the pantograph mechanism 19 act,
Further, in the case of the vertical direction, the hydraulic cylinder 28 acts and the current collector 8 swings in the horizontal direction and the vertical direction, so that the pressing force P of the terminals 18a to 18d can be held.

[0026]

As described above, according to the present invention, exhaust gas and noise are not generated when power is supplied to a tire crane, so that not only environmental deterioration can be prevented but also maintenance cost can be reduced. be able to. Further, since it is not necessary to wind the power feeding cable or manipulate the unwinding, there are many effects such as damage to the power feeding cable.

[Brief description of drawings]

FIG. 1 is a plan view of a container terminal to which a power supply device for a tire crane according to the present invention is applied.

FIG. 2 is a side view of a passage.

FIG. 3 is a side view of a power supply device for a tire crane according to the present invention.

FIG. 4 is a sectional view taken along line CC ′ of FIG.

5 is a cross-sectional view taken along the line DD ′ of FIG.

FIG. 6 is a side view of a conventional tire crane.

FIG. 7 is a plan view of a conventional container terminal.

[Explanation of symbols]

A tire type crane B container terminal a1-a5 driving lane 1 crane body 2 trolley 6 spreaders 8 current collectors 15a, 15b Guide rail 16a to 16d Power supply trolley wire

Claims (4)

[Claims] 1. A tire-type crane adapted to travel along a traveling lane provided in a container terminal and to load and unload containers by a trolley and a spreader, wherein a guide rail and a power supply are provided near the traveling lane. A power supply device for a tire-type crane, wherein a power supply device is attached to the crane body, and the power supply device is brought into contact with the power supply trolley wire to supply power. 2. The power feeding device for a tire crane according to claim 1, wherein the guide rail and the power feeding trolley wire are arranged in a passage of a current collector extending along a traveling lane. . 3. The power supply device for a tire crane according to claim 1, wherein the current collector is attached to the crane body so as to be vertically and horizontally swingable. 4. A power supply device for a tire-type crane according to claim 1, 2 or 3, wherein a guide roller is attached to the current collector.