JPH0556542A - Feeder cable laying method and apparatus for climbing tower crane - Google Patents

Abstract

PURPOSE:To obviate the necessity of manpower for rearranging the feeder cable at the time of climbing. CONSTITUTION:A cable winder 9 provided with a motor cable reel 10 is mounted on the receiving base 14 of tower crane and the motor cable reel 10 is driven at the time of climbing the tower crane so that the feeder cable 5 is fed out by an amount corresponding to the climbing amount on tower crane thus laying the feeder cable 5 on the tower crane without substantially requiring any manpower.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for laying a power cable for a climbing tower crane and an apparatus for implementing the apparatus.

[0002]

2. Description of the Related Art In a high-rise building construction work, when floor climbing of a tower crane is performed, the power cable is refilled. As a conventional method, the following method is known.

A conventional case 1 is shown in FIG. 3, and when the tower crane is climbed, the power supply cable can be rearranged by connecting a power supply 4 for connecting a cable drum 2 installed on the ground floor and a dedicated distribution board 3 to each other. And pull out the rising wire 5 from the cable drum 2 for the next climbing. Since the rising wire 5 is fixed to the base 1a of the tower crane 1, it climbs together with the crane 1.
As shown in the figure, the rising electric wire 5 is raised to the position of the tower crane (suspended from the tower crane base), the connecting electric wire 4 is connected to the dedicated distribution board 3, and the power cable reshuffling is completed.

FIGS. 4 to 6 show a conventional case 2, and in FIG. 4, an electric wire 4 for connecting to a dedicated distribution board and an electric wire 6 on the crane base side, which is a horizontal cable, at A on the ground floor.
And are connected. In FIG. 5, when climbing the tower crane, a rising wire 5A is prepared, and the connecting wire 4 and the wire 6 are cut off at A on the ground floor.
And the rising electric wire 5A are connected. In the intermediate floor B, the rising electric wire 5A and the electric wire 6 are connected. At that time, the electric wire 6 is horizontally pulled to the same position as the rising electric wire 5A to the rising crane base 1a. In FIG. 6, a rising wire 5B is further prepared when climbing the tower crane.

[0005]

By the way, at present, the method of case 1 is more often used than the case 2 in the field for the following reason.

Case 1 is less labor intensive than Case 2, does not require a horizontal pulling cable, has a short power outage time for refilling, does not require a cable lifting machine, and does not have to work in high places. ..

However, the case 1 method also has the following problems.

Although less labor is required than in case 2, labor is required for refilling the power cable during climbing, and space for installing the cable drum and pulling out the cable is required on the ground floor. In case 1, the entire cable will be pulled up during climbing, so if the cable is supported (fixed) on the middle floor, it must be temporarily removed each time climbing occurs, and at this time the cable is suspended at one point. , Also, the cable may be damaged by the deck plate. further,
There is a power outage time for refilling, and when dismantling the tower crane, handling the cables requires a lot of effort.

The present invention has been made to solve the above-mentioned problems of the conventional method, and substantially eliminates the labor for replenishing the power cable during climbing, and also installs the cable drum and pulls the cable on the ground floor. Space is not required and cable support (fixed) on the middle floor
Can be used as is until the end if set at the beginning, therefore it does not require removal work of the cable support (fixed) on the intermediate floor for each climbing, there is no power outage for refilling, and when the tower crane is dismantled The purpose of the present invention is to provide a method for laying a power cable for a climbing tower crane that does not require labor for processing, and an apparatus for carrying out the method.

[0010]

According to the method of the present invention,
A cable winding device equipped with an electric cable reel is placed on a base cradle of a tower crane, one end of a power cable wound on the electric cable reel of the cable winding device is used as a power source, and the other end is used as a tower crane. Each is connected to a control panel, and when climbing to the tower crane, the electric cable reel is driven, and the power cable is pulled out for the climbing of the tower crane.

According to the apparatus of the present invention, a cable winding device having an electric cable reel is mounted on a base cradle of a tower crane, and a power cable is wound around the electric cable reel of the cable winding device. One end of the power cable is connected to the power source and the other end is connected to the control panel of the tower crane.

In carrying out the present invention, the electric cable is provided with an extendable arm so that both arms can rotate with respect to the base cradle of the tower crane, and guide rollers for guiding the power cable are provided at the front and rear ends of the arm. Provided,
It is advisable to bridge the guide roller on the connection side to the power source, which is the pull-out side of the power cable. Thus, the cable reel and the arm are rotated together in the horizontal direction, and the arm is further expanded and contracted, whereby the position where the power cable is lowered can be appropriately determined.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, on the base cradle 1a of the tower crane 1, there is mounted a cable winding device, generally designated by 9, having an electric cable reel, the details of which will be described later. The power supply cable 5 is wound around the cable reel of the cable winding device 9, one end of which is connected to the dedicated distribution board 3 on the ground floor and the other end is connected to the control panel of the tower crane 1. ing. The power cable 5 is supported by the supports 7 and 8 on the intermediate floor, and these supports 7 and 8 can be used as they are until the end if they are first set. The power supply is, for example, 3φ3W200V, and when the crane is dismantled, the cable can be wound with a general power supply even if the power supply of the crane is lost.

FIG. 2 shows the details of the cable winding device 9,
The electric cable reel 10 is pivotally supported by a U-shaped support tool 11 and is rotationally driven by a motor (not shown). As described above, the power supply cable 5 is wound around the cable reel 10, and one end side 5a of the power supply cable 5 is connected to the power supply and the other end side 5b thereof is connected to the control panel of the tower crane. The cable reel 10 is of a slip ring type. An arm 13 is coupled to a support 11 of the cable reel 10 by a shaft 12, and the cable reel 10 and the arm 13 are mounted by a shaft 14 on a mount 14.
It is supported so that it can rotate together in the horizontal direction indicated by arrow A. The arm 13 is a fixed arm 13a.
And a movable arm 13b, which can be expanded and contracted in the horizontal direction indicated by arrow B, and the members 13a and 13b are integrated by inserting a pin into the pin hole 13c. Guide rollers 15, 15 are attached to the ends of the fixed arm 13a and the movable arm 13b, and a cable portion 5a on the side of the cable that reaches the power source is stretched over the guide rollers 15, 15. The pedestal 14 that rotatably supports the cable reel 10 and the arm 13 has the base pedestal 1 of the tower crane 1 as shown in FIG.
It is placed and fixed on a.

In use, when the tower crane 1 is climbed, the electric cable reel 10 is driven to pull out the power cable 5 for the climbing of the tower crane 1.
At that time, the cable reel 10 and the arm 13 are rotated in the horizontal direction, and the arm 13 is further expanded and contracted, so that the position where the power cable 5 is lowered can be appropriately determined. Further, as described above, in FIG. 1, if the cable supports 7 and 8 are set first, they can be used as they are until the end.

[0017]

According to the present invention, the following excellent effects can be obtained.

(1) No labor is required to change the power cable during climbing.

(2) There is no need for installation of a cable drum and a space for pulling out the cable on the ground floor.

(3) In case 1 described as a conventional example, the entire cable is pulled up during climbing. Therefore, (3) -1 When the cable is supported (fixed) on the intermediate floor, this is required for each climbing. I have to remove it temporarily. At this time, the cable is suspended at one point.

(3) -2 The cable may be damaged by the deck plate or the like.

According to the present invention, these problems are eliminated.

(4) There will be no power failure.

(5) When dismantling the tower crane, the cable may be electrically wound around the drum, which reduces labor.

[Brief description of drawings]

FIG. 1 shows an embodiment of a method and apparatus for laying a power cable of a floor climbing tower crane according to the present invention,
The front view which shows the positional relationship of the floor of a building, the tower crane, and the cable winding device.

FIG. 2 shows an embodiment of a method and apparatus for laying a power cable for a floor climbing tower crane according to the present invention,
The detailed perspective view of a cable winding device.

FIG. 3 is a schematic view of a conventional case 1.

FIG. 4 is a schematic view showing a first step of a conventional case 2.

FIG. 5 is a schematic view showing a second step of the conventional case 2.

FIG. 6 is a schematic view showing a third step of the conventional case 2.

[Explanation of symbols]

 1 ... Tower crane 5 ... Power cable 9 ... Cable winder 10 ... Electric cable reel 11 ... U-shaped support tool 12 ... Shaft 13 ... Arm 14 ...・ Cradle

Front Page Continuation (72) Inventor Hiroshi Hida 1-3-8 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. Tokyo Branch (72) Inventor Yukio Nozaki 1-3-8 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd.Tokyo Branch

Claims (2)

[Claims] 1. A tower winder is equipped with a cable winding device equipped with an electric cable reel on a base cradle of a tower crane, and one end of a power cable wound around the electric cable reel of the cable winding device is supplied to a power source and the other. Connecting the ends to the control panel of the tower crane, driving the electric cable reel when climbing to the tower crane, and pulling out the power cable for the climbing of the tower crane. Method. 2. A base crane of a tower crane is provided with a cable winding device equipped with an electric cable reel, and a power cable is wound around the electric cable reel of the cable winding device. A power cable laying device for a climbing tower crane, wherein one end of the power cable is connected to the power source and the other end is connected to the control panel of the tower crane.