JPH01176797A - Cable winch mechanism - Google Patents

Abstract

PURPOSE:To have proper cable payoff and wind-in operation by furnishing a slacking device in the neighborhood of a cable drum. CONSTITUTION:In case the tension of a cable 1 is zero, a pinching cylinder of a slacking device 10 is operated, and a caterpillar shoe hold plate 15 on the moving part 12 side is moved toward another caterpillar shoe hold plate 14 on the stationary part 11 side to pinch the cable 1 through a caterpillar shoe 13. An oil motor 5 on the cable drum 2 side is operated at all times on the drive side so that a constant tension is applied always to the cable 1 between the cable drum 2 and slacking device 10 so as to put in the auto-tension condition. Thereafter the oil motor 17 is rotated in either direction to wind in the cable 1 into the cable drum 2 at a constant tension. In case paid off, the pinching tension of the slacking device 10 overwhelms the auto-tension.

Description

[Detailed description of the invention] (a) [Field of industrial application] The present invention is a cable winch suitable for use in unmanned exploration vehicles used for various underwater exploration activities such as ocean surveys, deep sea surveys, and dam lake bottom surveys. Regarding the mechanism.

(b) [Prior Art] Recently, unmanned probes have been widely used as support devices for various underwater exploration activities such as oceanographic surveys. Most of these unmanned probes are self-propelled with cables, and are remotely controlled from land (or shipboard) via cables. The cable is wound in and let out by a cable winch mechanism.

The current cable winch mechanism simply winds the cable around a drum, and the unmanned exploration vehicle suspended via the cable is operated by letting out the cable with the cable winch mechanism according to its own propulsion speed. The cable winch is stopped when the spacecraft reaches its destination.

(c) [Problem to be solved by the invention] By the way, since unmanned probes are self-propelled underwater, the cables used to move around in order to explore the destination must be extended out extra to accommodate the radius of movement. It's okay. At this time, the tension acting on the cable naturally becomes close to zero.

When the tension becomes zero, a problem arises in that the cable in the drum comes loose, or in the case of a sick device, the cable is not paid out.

On the other hand, when winding a cable, there is a problem in that the cable is wound inside the drum in a so-called dumpling state, or the cable is caught in a part with strong tension and a part with weak tension, causing the cable to dig into the drum.

The purpose of the present invention was made in view of the above-mentioned problems,
To provide a cable winch mechanism capable of normally performing cable feeding and winding operations.

B) [Means for Solving the Problems] The present invention provides a cable winch mechanism including a cable drum rotatably supported on a frame and driven by a drive motor, in which a slacking device is provided near the cable drum. The cable is provided so that the cable can be wound in or let out through the slacking device.

(e) [Function] In this way, the present invention winds up or lets out the cable through the slacking device, and since tension is always applied to the cable, the cable becomes curly, etc. There is no need to worry; the cable will be wound up or unwound normally and reliably.

(F) [Examples] The present invention will be described in detail below using examples shown in the drawings.

1 and 2 are a plan view and a front view showing an embodiment of a cable winch mechanism according to the present invention.

A cable drum 2 around which a cable 1 is wound has a drum shaft 6 rotatably supported by a frame 4. An oil motor 5 is connected to one end of the drum shaft 3, and the cable drum 2 is driven by the oil motor. Note that a slip ring 6 is attached to the other end of the drum shaft B.

A cable shifter shaft 7 is arranged parallel to the cable drum 2, and the cable shifter shaft 7 is rotatably supported by the frame 4. A chain 8 is stretched between the cable thick shaft 7 and the drum shaft 6, and the cable thick shaft 7 is driven by the oil motor 5 via the chain 8.

A cable shifter 9 is screwed onto the cable thick shaft 7, and the cable shifter 9 is of a normal diamond screw type and is configured to automatically move the cable 1. A slacking device 10 is mounted on the tower.

That is, the slacking device 10 is shown in FIG.

As shown in detail in FIG. 4, it consists of a fixed part 11 and a movable part 12, and both of these fixed part 11 and movable part 12 are drive subrockets 11a, 12a and driven subrocket 1.
It has a structure including 1b and 12b. These driving sprockets 11a, 12a and driven sprocket 11
A caterpillar shoe 13 is stretched between b and 12b.

In addition, driving sprocket 11a H12as driven sprocket) 11b, 12b and caterpillar shoe 13
A caterpillar shoe 1 is placed in each space defined by
Caterpillar shoe holding play holding down 6) 14.1
5 is arranged, and the caterpillar shoe presser plate 15 on the side of the movable part 12 is configured to be moved up and down by a clamping cylinder 16. The vertical movement of the caterpillar shoe holding plate 15 causes the caterpillar shoe 16 on the movable part 12 side to move up and down, thereby clamping the cable 1 with the caterpillar shoe 16 on the fixed part 11 side or releasing it.

The drive sprockets 11a and 12a are rotationally driven by an oil motor 17. That is, as is clear from FIG. 4, the drive sprocket 11a on the fixed part 11 side is the output gear 17 of the oil motor 17.
The drive sprocket 12a on the movable part 12 side is in direct mesh with the output gear 17a via the intermediate gear 18.

Next, the operation of the cable winch mechanism will be explained.

First, when winding in and letting out the unmanned probe suspended from the cable 1, the tension acting on the cable 1 is large, so the drum-driven oil motor 5 is used to drive the cable 1. In this case, since the slacking device 10 does not need to be driven, the clamping cylinder 16 of the slacking device 10 is in the open position, and the cable 1 is connected between the caterpillar shoes 15 on the fixed part 11 side and the movable part 12 side. pass freely.

On the other hand, when the self-propelled unmanned exploration vehicle is operated by the oil motor 5 to a certain value and then moves around by the self-propelled power of the unmanned exploration vehicle itself, the tension of the cable 1 becomes thick (varies, The tension may become zero. In such a state, it is impossible to wind in or let out the cable 1. Therefore, in this case, the clamping cylinder 16 of the slacking device 10 is activated. Movable part 1
Attach the caterpillar shoe presser plate 15 on the second side to the fixing part
Move the caterpillar shoe presser plate 14 side to the side,
The cable 1 is sandwiched through the caterpillar shoes 16. Then, so that a constant tension is always applied to the cable 1 between the cable drum 2 and the slacking device 10, the oil motor 5 on the cable drum 2 side is always operated on the drive side and kept in an auto-tension state.

Thereafter, by rotating the oil motor 17 on the side of the slacking device 10 in the normal or reverse direction, the cable 1 is wound around the cable drum 2 with a constant tension. On the other hand, when the cable 1 is let out from the cable drum 2, the clamping pulling force of the slacking device 10 overcomes the auto-tension. In this embodiment, no matter how the cable tension value between the cable winch and the unmanned probe changes during winding and unwinding of the Cape A/10, a moderate cable tension is maintained in the cable drum 2. is maintained, so there is no need to worry about the dango-maki state that occurs in the past.

In addition, in the above-mentioned embodiments, a case where a hydraulic type was used as the drive system was explained, but it is of course possible to use an electric type. 10 is configured to be mounted on the cable chic 9, but the structure is not limited to this.

(G) [Effects of the Invention] As explained above, according to the cable winch mechanism according to the present invention, a slacking device is provided near the cable drum, and the cable is wound in or let out through the slacking device. Therefore, tension is always applied to the cable. This eliminates the possibility that the cable will come undone or be wound up in a dangling manner, and the cable can be wound or unwound normally and reliably. In particular, a secondary cable winch is used in systems such as deep-sea research vessels, where an unmanned probe is stored in the launcher, and after the unmanned probe arrives in the deep sea, it is separated from the launcher and moved around the deep sea by remote control from the mother ship. The present invention is most suitable for the system.

[Brief explanation of the drawing]

1 and 2 are a plan view and a front view showing an embodiment of the cable winch mechanism according to the present invention, and FIGS. 6 and 4 show details of a slacking device employed in the cable winch mechanism. They are a plan view and a front view.

Claims (1)

[Claims] A cable winch mechanism including a cable drum rotatably supported on a frame and driven by a drive motor, wherein a slackening device is provided near the cable drum, and the cable is wound in or let out through the slackening device. A cable winch mechanism characterized by: