JPH0443401Y2 - - Google Patents

Description

[Detailed description of the invention] (1) Industrial application field The present invention relates to a cable drum drive device for a cable feeding and winding device used in power distribution line construction such as bypass construction.

(2) Prior Art Conventionally, it has been known to rotate a cable drum by bringing the cable drum into contact with the rollers of a cable drum drive device installed on a loading platform.
It is conventionally known as described in Japanese Patent No. 54700.

(3) Problems that the invention aims to solve However, the conventional cable drum drive device rotates and drives the cable drum attached to one shaft by swinging and pressing the drive device installed on the loading platform. Therefore, in equipment where multiple cable drums are attached to a circulating annular chain, the cable drum drive device gets in the way when circulating the cable drums or when attaching and detaching the cable drums, resulting in poor work efficiency. There was a problem.

(4) Means for Solving the Problems In order to solve the above problems, the present invention consists of a hydraulic motor and a roller that is rotationally driven by the hydraulic motor and contacts the cable drum to rotate the cable drum. A drive device is pivotally supported under the floor of the loading platform so that it can swing up and down in a vertical plane, and a swinging device is attached to this driving device via a spring and swings the drive device between the top of the loading platform and the underside of the loading platform. It is equipped with a cylinder.

(5) Effect With the above configuration, when rotating the cable drum fixed at a predetermined position, the swing cylinder is extended to swing the drive device upward, and the roller is brought into contact with the cable drum. The cable drum is rotated by driving the hydraulic motor, and by stopping the drive of the hydraulic motor in this state, the drive device acts as a brake for the cable drum, and when attaching or detaching the cable drum, etc.
By contracting the swing cylinder and swinging the drive device downward, the drive device is stored under the floor of the loading platform, and the cable drum can be easily attached and detached.

(6) Examples Examples of the present invention will be described below with reference to the drawings.

As shown in FIG. 2, a circular chain 4 is circulated between a pair of sprockets 11, 12 pivotally supported on frames 2, 3 provided on a loading platform 1. One of the sprockets 11 is driven to rotate by a motor (not shown). Six cable drums 15, 16, 17, 18 are attached to the circular chain 4 by brackets 5, 6, 7, 8, 9, 10.
Rollers 25, 26, 27, 28, 29, 30 are rotatably attached to both ends of the shaft of each cable drum.
The cable drum fixing device 13 is provided for fixing any cable drum, and the swing arm 2 has a recess for abutting against the roller of the cable drum to position the cable drum and fix the roller.
The cable drum 15 is fixed by a cable drum fixing device 13 composed of a swing arm 21 and a telescopic cylinder 22 that swings the swing arm 21 up and down, and is driven to rotate by contacting with a cable drum drive device 14 that is stored in the platform 1 and is provided so as to be able to swing up and down. Reference numerals 23 and 24 denote guides on which the rollers of the cable drum roll.

As shown in FIG. 1, the cable drum driving device 14 housed under the floor of the loading platform 1 has a frame 31 that is pivotally supported under the floor of the loading platform 1 so as to be able to swing up and down. Pair of rollers 3
3 is rotatably supported by a shaft 32, and a drive device 38 has a hydraulic motor 34 built in a frame 31 and a shaft 32 connected by sprockets 35, 36 and a chain 37, and one end is pivotally supported in the loading platform 1 and the other end is is a swing cylinder 41 attached via a spring 40 to a bracket 39 attached to the frame 31.
The extension of the swing cylinder 41 causes the frame 31 to swing upward, causing the drive device 38 to protrude above the loading platform 1, and the contraction of the swing cylinder 41 causes the frame 31 to swing downward, causing the drive device 38 to protrude above the loading platform 1. 38 is stored under the floor of the loading platform 1.

With the above configuration, when performing work, the motor is driven to circulate the annular chain 4, and the cable drum 15 to be used is moved to the position of the cable drum fixing device 13, as shown in FIGS. 1 and 2. Then, the circulation of the annular chain 4 is stopped. In this state, by extending the telescopic cylinder 22 and swinging the swing arm 21 upward, the roller 25 of the cable drum 15 moves towards the swing arm 21.
The roller 25 of the cable drum 15 is positioned and fixed by the recess of the swing arm 21. Next, by extending the swing cylinder 41 of the cable drum drive device 14 and swinging the frame 31 upward, the drive device 3
8 protrudes above the loading platform 1 and brings the roller 33 into contact with the cable drum 15. In this state, by operating the hydraulic motor 34, the cable drum 15 is driven to rotate, and the cable is fed out or wound up. The vertical movement of the roller 33 due to backlash of the drum 15 or the like is absorbed by the spring 40. Furthermore, when the hydraulic motor 34 is stopped in this state, the cable drum drive device 14 acts as a brake for the cable drum 15.

When changing the rotationally driven cable drum,
By stopping the hydraulic motor 34 of the cable drum drive device 14 and contracting the swing cylinder 41 to swing the frame 31 downward, the drive device 38 is stored under the floor of the loading platform 1, and the telescopic cylinder 22 is contracted. to swing the swing arm 21 downward, and move the concave part of the swing arm 21 to the roller 25.
to release the fixation of the cable drum 15,
Next, by driving the motor to circulate the annular chain 4, the cable drum to be used next is moved to the position of the cable drum fixing device 13.
Also, when attaching and detaching the cable drum, by reducing the swing cylinder 41 and storing the drive device 38 under the floor of the loading platform 1, there are no obstacles.
The cable drum can be easily attached and detached.

(7) Effects of the invention As described above, according to the invention, the cable drive device is provided with a simple structure so that it can be stored under the floor of the loading platform. Also, a cable drum drive device that can easily circulate and attach/detach a cable drum is provided, and the present invention is effective in improving the efficiency of cable feeding and winding work.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a detailed view of a cable drum driving device, and FIG. 2 is a side view showing the configuration of a cable feeding and winding device. 1... Loading platform, 14... Cable drum drive device, 15, 16, 17, 18, 19, 20... Cable drum, 33... Roller, 34... Hydraulic motor, 38... Drive device, 40... Spring ,
41... Swing cylinder.

Claims (1)

[Scope of utility model registration request] A drive device consisting of a hydraulic motor and a roller that is rotationally driven by the hydraulic motor and contacts a cable drum to rotate the cable drum, and is pivotably supported under the floor of a loading platform so as to be able to swing up and down in a vertical plane, and this drive device. A cable drum drive device comprising: a swing cylinder attached via a spring to a swing cylinder for swinging the drive device between the top of the loading platform and the underside of the floor of the loading platform.