JP2551120Y2 - Cable hoist - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a cable hoist for emergency stop of a hoist by detecting upper and lower limits of a cable and entanglement of a cable when dropping or hoisting a marine sensor, underwater light, etc. into the sea. About.

[0002]

2. Description of the Related Art When dropping or unwinding a cable in an underwater light hoist, marks are placed on the upper and lower limits of the cable with tape or paint so that the cable is not overwound or pulled out. Was.

[0003] In such underwater lamp winding machines, there is a problem that overwinding is performed due to an operation error or carelessness, and a feeding operation is performed even though the cable in the cable storage box is lost. Operators must be on the hoist.

[0004] In addition, the unwound cable is stored in a cable storage box in a state where a tuna is wound. When dropping the underwater lamp, the cable inside the storage box is unwound and pulled up by the drive roller. The cable may come off from the sheave groove of the roller.

Usually, a cable guide is provided between the drive roller and the cable storage box. However, since the cable guide is merely fixed to the main body case, the entangled portion cannot pass therethrough, so that the drive roller is driven. The motor may be overloaded or the cable may be disconnected. In the case where a device for measuring the drop water depth based on the number of rotations of the drive roller is provided, a measurement error may occur.

[0006]

The problem to be solved by the present invention is that when the cable is to be hoisted and unwound above a preset upper and lower limit position of the cable and / or the entangled portion of the cable passes through the cable guide. It is an object of the present invention to provide a device which detects this and stops the drive motor.

[0007]

In order to solve this problem, a cable winding machine according to the present invention is provided with a driving mechanism for cable winding.
Cable that guides the cable between the
The cable guide is provided with
Entanglement that is activated when a force greater than a predetermined force is applied in the direction of
Detectors are provided, and the upper and lower winding positions of the cable are
The upper and lower detection parts are provided in
A cable upper and lower limit detector that detects the approach of the detection unit is provided,
Either the entanglement detector or the cable upper / lower limit detector
Stop means for stopping the drive motor by the output of
In the cable winder, the entanglement detector and the cable
The drive mode is also used as the lower limit detector and the same stop means.
The configuration is such that the data is stopped .

[0008]

[ Function ] In the present invention, the upper limit position and lower limit of the cable winding
Upper / lower limit detection part provided at the position
Drives by the output of the detector when trying to pass through the detector
The motor stops. Also, when unwinding the cable,
Before the minute or bump passes the drive roller,
Upon detecting this, the drive motor is stopped. This allows
The disconnection of the cable is prevented. The entanglement detector and the cable
Double use as the upper and lower limit detector and drive with the same stopping means.
The configuration is simplified by stopping the dynamic motor.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments shown in the drawings.

FIG. 1 is a front view showing the structure of a hoist according to the present invention, FIG. 2 is a front view of a main part, FIG.
FIG. 5 is a plan view of the same, and FIG. 5 is a front view of a main part showing a configuration of the entanglement detecting unit. In the figure, 1 is a main body case, 2 is a cable, 3 is a driving roller, 4 is a pressing roller, 5 is a guide roller, and 6 is a pressing roller rotatably supported by a support shaft 10 having an intermediate portion attached to the main body case 1. A mounting rod, 7 is a cable guide mounted below the holding roller mounting rod 6, 8 is a cable storage box, 9 is a rubber bush fitted on the upper and lower limit positions of the cable, 11 is a bearing of the support shaft 10, 12 Is an operating lever attached to the base end of the support shaft 10 inside the main body case 1, 13 is a switch which is activated when a magnet 14 attached to the distal end of the operating lever 12 approaches, and 15 is a pressing roller 4 for driving the driving roller 3 An operation panel 17 for operating the hoisting, unwinding and stopping operations is provided. A in FIG. 5 indicates a entangled portion of the cable 2.

In the above configuration, the winding and unwinding of the cable 2 is normally monitored and controlled by counting the number of rotations of the drive roller 3, but the winding and unwinding of the cable 2 is performed due to malfunction or failure of the control system. When the rubber bush 9 fitted to the cable 2 tries to pass between the drive roller 3 and the press roller 4 when the cable 2 has passed or unwound too much, the press roller 4 moves rightward as indicated by the upper arrow in FIG. , The support shaft 10 rotates, and the magnet 14 at the tip of the operating lever 12 attached to the base end of the support shaft 10 approaches the switch 13 to operate the switch 13. The drive motor of the drive roller 3 is urgently stopped by the electric output of the switch 13, and the winding or unwinding of the cable 2 is stopped, and at the same time, an alarm such as a buzzer is issued.

Further, as shown in FIG. 5, when the entangled portion A of the cable 2 is going to pass through the loop at the end of the cable guide 7, the entangled portion A pushes up the end of the cable guide 7, so that the cable guide 7 is attached. 2, the switch 13 is operated in the same manner as described above, and the drive motor of the drive roller 3 is urgently stopped. Stop unwinding and issue an alarm.

[0013]

According to the present invention, as described above, the cable may be unwound or unwound too much due to the failure or operation error of the control circuit, and the entangled portion or bump of the cable may pass through the drive roller. Since the drive motor is emergency-stopped by preventing this from happening, it is possible to achieve effects such as automatic operation and remote control when several hoists are operated alone. In addition, overwinding of the cable
Detection of unwinding and unwinding and tangling and bumps of the cable
The same detection is performed when trying to pass the drive roller.
The structure is simplified and the cost is reduced.
Can be reduced.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a cable hoist according to the present invention.

FIG. 2 is a front view showing a main part of the embodiment of the present invention.

FIG. 3 is a vertical sectional side view of FIG. 2;

FIG. 4 is a plan view of FIG. 2;

FIG. 5 is a front view of a main part showing an embodiment of a entanglement detecting unit.

[Explanation of symbols]

1 body case, 2 cables, 3 drive rollers, 4
Holding roller, 5 guide roller, 6 holding roller mounting rod, 7 cable guide, 8 cable storage box, 9 rubber bush, 10 support shaft, 11 bearing, 12 operating lever, 13 switch, 14 magnet, 15 spring, 17 operation panel, A Entanglement

Claims (1)

(57) [Scope of request for utility model registration] 1. A cable winding drive roller and a cable collecting device.
Install a cable guide between the storage box and the cable
The cable guide in the direction of the drive roller.
Provide a entanglement detector that operates when the above force is applied,
At the upper and lower winding positions of the cable
In addition to providing a lower limit detected part,
A cable upper and lower limit detector for detecting the entanglement detector is provided.
And output from one of the cable upper / lower limit detectors.
Cable hoist provided with stopping means for stopping dynamic motor
In the above, both the entanglement detector and the cable upper and lower limit detector,
A cable hoist wherein the drive motor is stopped by the same stopping means .