JP2005145699A - Winch device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a winch device that has a large reduction gear ratio, can employ a high-speed motor, is miniaturized, and is increased in torque. <P>SOLUTION: In the winch device, an apparatus for driving a winding drum is disposed inside the winding drum rotatably supported by drum support bases. The apparatus has a built-in motor in the drum, an electromagnetic brake is attached to one side of the motor, and an electromagnetic clutch is sandwiched between a front reduction means and back reduction means using a planetary gear on the opposite output side. The front reduction means has only a plurality of reduction gears, namely a first reduction gear and a second reduction gear, a traverser for controlling the winding position of a wire rope or the like in the drum is disposed at a front position parallel with the winding drum, and the winding drum is interlocked and connected with the traverser via a chain transmitting mechanism. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a winch device such as a wire or rope that is useful for lifting and lowering anchors of small vessels.

  As shown in Japanese Patent Publication No. 58-3958, there is a winch having a configuration in which a motor for driving the wire take-up drum is provided inward of the wire take-up drum. Etc. are provided outside the drum, and a guide for specifying the winding position of the drum wire, rope, etc., and a traverser for controlling the position thereof are rotated in conjunction with the drum by the gear transmission mechanism. ing.

  In the winches described above, the rack mechanism and the speed reduction mechanism are located outside the drum, so it is necessary to take special measures for waterproofing and damage prevention, and the clutch mechanism, speed reduction mechanism, and traverser are mechanically configured. Therefore, there are problems such as complicated structure and high cost.

  Japanese Examined Patent Publication No. 7-29751 solves the above-mentioned problems, that is, it does not require a special waterproof structure or protective structure, and is excellent in achieving definite waterproofing measures and preventing equipment damage. As the torque applied to the output shaft increases, there is a problem that the volume of the electromagnetic clutch increases in proportion to this.

Japanese Patent Laid-Open No. 2003-252573 solves the above problem, but it is difficult to increase the rotation speed of the motor, and there is a problem that the reduction gear ratio has a limit and there is a limit to increase it.
Japanese Patent Publication No.58-3958 Japanese Patent Publication No. 7-29751 JP 2003-252573 A

  An object of the present invention is to increase the motor rotation speed and reduce the gear ratio in JP-A-2003-252573, and to reduce the size of the entire apparatus and increase the torque.

  In the present invention, a device for driving the drum is disposed inside a winding drum that is rotatably supported by a drum support, and this device has a motor built in the drum, An electromagnetic brake is arranged on one side of the motor, and an output side opposite to the motor is arranged in such a manner that an electromagnetic clutch is sandwiched between a front speed reduction means and a rear speed reduction means using a planetary gear. A traverser for controlling the winding position of a wire rope or the like on the drum is provided at a front position in parallel with the winding drum, and the winding drum and the traverser are interlocked and connected via a chain transmission mechanism. And At this time, it is assumed that the front speed reduction means includes a plurality of first speed reducers and second speed reducers.

According to the present invention described above, the following effects can be obtained.
Since reduction means using planetary gears are provided before and after the electromagnetic clutch on the output side of the motor shown in Japanese Patent Application Laid-Open No. 2003-252573, the reduction gear ratio is increased and a high-speed motor is adopted. It becomes possible to contribute to downsizing and higher torque. In particular, when the front speed reducing means is divided into a plurality of first and second speed reducers as in the invention described in claim 2, the above-mentioned operational effects become remarkable.

  FIG. 1 is a partially cut plan view of a winch device according to the present invention, FIG. 2 is a side view thereof, and FIG. 3 is an overall perspective view of a main part. In the figure, reference numerals 1a and 1b denote drum support bases arranged in an opposing manner, and mounting base floors 2a and 2b are fixed to the lower ends of the drum support bases. Reference numeral 3 denotes a wire or rope take-up drum that is rotatably supported on the support bases 1a and 1b via bearings 4a and 4b.

  The drum 3 has a pair of disc members 3b and 3b fixed to both ends of the cylindrical portion 3a, and a disc member 5b rotatably supported by a bearing 4a and the like on one disc member 3b. A disk member 5b having a shaft member 6 supported by a bearing 4b is bolted to the other disk member 3b. The shaft member 6 includes a boss portion 6a having a relatively large diameter and a shaft portion 6b concentric with the boss portion 6a.

  Thus, a device for rotationally driving the drum 3 is provided on the inner side of the drum 3, and specifically, as follows. That is, a stepped shaft portion 7 for holding the bearing 4a and a main cylinder 8 for holding a motor having a relatively large diameter are formed, and the stepped shaft portion 7 is formed on one support base 1a. Then, the nut 9 is fitted into a screw portion formed in the stepped shaft portion 7 and tightened to be fixed to the support base 1a. A motor 10 is installed in the main cylinder 8, an electromagnetic brake 11 for controlling the rotation of the motor shaft 10a is provided on one side of the main cylinder 8, and a front speed reduction using a sun gear and a planetary gear on the opposite output side. It is assumed that the means and the rear side reduction means are arranged with an electromagnetic clutch interposed therebetween.

  In the present invention, the front speed reduction means 12 using the planetary gear is divided into a plurality of stages of a first speed reducer 12a and a second speed reducer 12b. Dividing into a plurality of stages here is to obtain a large reduction ratio, and for example, if the ratio is set to 1/4 for the first reduction gear 12a and 1/5 for the second reduction gear 12b, The reduction rate is 1/20 at the part, and 12C is the output shaft. In addition, if the rear side decelerating means 14 to be described below is set to 1/5, an overall deceleration rate of 1/100 can be obtained.

  An electromagnetic clutch 13 intermittently rotates the speed reduction shaft 12C decelerated by the front speed reduction means 12 and transmits it to the rear speed reduction means 14. This is a conventionally known non-magnetically operated electromagnetic clutch, wherein 13a is a magnet field, 13b is an armor chair, 13c is a disk plate, 13d is a spring for always pressing the armor chair 13b in the direction of the disk plate 13c. Normally, the rotation of the front speed reduction means 12 is transmitted to the rear speed reduction means 14, but when energized, it is attracted to the magnet field 13a and the armchair 13b and the disc plate 13c are disengaged by the spring. As a result, the rotation transmission to the clutch shaft 13e is cut off.

The rear speed reduction means 14 has a structure using a sun gear and a planetary gear in one stage with respect to the front speed reduction means, and 14a is an output shaft on the output side thereof.
Thus, the tip end is integrally fixed to the disc body 5b of the shaft member 6 supported by the bearing 4b. Reference numeral 15 denotes an outer cylinder that covers the outer periphery of the above-described configuration, and is two split cylinders 15A and 15B that are continuously integrated with the protective cylinder 8 of the motor 10, and of these, the split cylinder 15A Covers the front speed reduction means 12, and the split cylinder 15B covers the electromagnetic clutch 13 and the rear speed reduction means 14.

  The inner peripheral surface of the split tube 15A among the split tubes in the above is engraved with internal teeth that mesh with the planetary gear, and the magnet on the split tube 15A side of the other split tube 15B. The field 13a is attached, and the inner peripheral surface is engraved with internal teeth that mesh with the planetary gear of the rear reduction means 14. Reference numerals 15a, 15b, 15c, 15d, and 15e are ball bearings interposed in order to make the outer cylinder a fixed side.

  The configuration for driving the drum 3 according to the present invention is as described above, but the rest is the same as that shown in the previously proposed Japanese Patent Application Laid-Open No. 2003-252573. That is, in the drawing, 16 is a traverser provided in the vicinity of the drum 3 via a pair of drum support bases 1a and 1b so as to be rotatable at a fixed position in parallel therewith. The traverser 16 is rotated in conjunction with the drum 3 at a constant rotation ratio. Specifically, the traverser 16 is configured as follows.

  A relatively small driving shaft sprocket 17 is fixed to the shaft portion 6 b of the drum 3, while a relatively large driven sprocket 18 is fixed to one end of the traverser 16, and an endless chain 19 is attached to these two sprockets 17, 18. A tension sprocket 21 is provided in the vicinity of the chain 19 via a holding device 20 fixed to the platform 2b, and the chain 19 is elastically pressed by a spring pressing force (not shown). is there.

  A traverser slide body 22 is externally fitted to the traverser 16 and is provided with a flexible rope guide 23 for guiding the wire wound around the drum 3 and the rope w. The rope guide 23 is provided with, for example, a support portion 24 rotatably mounted around a longitudinal axis 24a on a traverser slide body 22 and a guide roller 26 rotatably supported by a shaft 25 on the traverser slide body 22. An inverted U-shaped frame member 27 that surrounds w is fixed to the traverser slide body 22. In the drawing, reference numeral 28 denotes a cable for supplying electricity to the motor 10.

  The winch according to the present invention configured as described above is used, for example, for lifting and lowering an anchor by being fixed to the bow of a small vessel. In this case, an anchor is connected to the tip of the wire w, and the winch can be operated with a single lever switch in the wheelhouse. Hereinafter, a usage example and its operation in this case will be described. FIG. 4 shows a lever switch 29 in which the operating positions (a), (b), and (c) are respectively wound, stopped, and thrown. That is, (a) At the winding position, the motor 10 rotates and the drum 3 rotates as soon as the electromagnetic brake 11 is opened.

  On the other hand, (b) at the stop position, all the power sources of the motor 10 and the electromagnetic brake 11 are stopped, the rotation of the drum 3 is stopped, and the disk plate 13b is pressed by the elastic force of the spring 13f to close the electromagnetic clutch 13. The drum 3 is in a locked state. On the other hand (c) in the throwing position, the electromagnetic clutch 13 is energized, and the disk plate 13b is attracted against the elastic force of the spring 13f, so that the electromagnetic clutch 13 is opened. 3 is in a free state.

Specifically, when the lever switch 29 is set to the throwing position, the drum 3 is instantaneously rotated as described above, and the rope w is lowered in a tensioned state due to its own weight. Thus, when the rope w is loosened about the seabed, the lever switch 29 is set to the (b) stop position, whereby the drum 3 is locked, and the rope w does not extend and becomes hungry.
If the lever switch 29 is left in the throwing position (c), the electromagnetic clutch 13 is seized, so that the automatic stop is made within 3 minutes when the clutch protection device is working.

When the lever switch 29 is pushed in at the stop position and is wound up (a), the motor 10 and the electromagnetic brake 11 are energized, the electromagnetic brake 11 is opened and the motor 10 is rotated at the same time, and the front deceleration unit 12 and the rear deceleration are performed. The drum 3 rotates at a constant reduction ratio via the means 14. The speed reduction ratio of the motor 10 is 4000 rpm, the speed reduction ratios of the first and second speed reducers 12a and 12b of the front speed reduction means are 1/4 and 1/5, respectively, and the speed reduction ratio of the rear speed reduction means. If it is 1/5, it will be 40 revolutions / minute.
As a result, the traverser 16 is rotated via the sprockets 17 and 18 and the chain 19, and the rotation of the traverser 16 causes the traverser slide body 22 and the universal rope guide roller 23 that is the same as the traverser 16 to reciprocate along the traverser 16. The rope w is regularly wound around the outer periphery of the drum 3 under a high torque, and the anchor is pulled up from the sea.

It is a partially broken top view of the winch device concerning the present invention. It is said side view. It is a whole perspective view of the principal part. It is a front view of an operation panel.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1a, 1b Drum support stand 3 Wire winding drum 10 Motor 10a Motor shaft 11 Electromagnetic brake 12 Front side reduction means 13 Electromagnetic clutch 14 Rear side reduction gear means 16 Traverser 23 Rope guide 26 Guide roller 29 Lever switch w Rope

Claims (2)

  A device for driving the drum is disposed inside the winding drum that is rotatably supported by the drum support, and this device incorporates a motor in the drum and sandwiches the motor. On the other hand, an electromagnetic brake is provided on the one side, and on the opposite side, an electromagnetic clutch is sandwiched between a front speed reduction means and a rear speed reduction means using a planetary gear. A winch device comprising a traverser for controlling a winding position of a wire rope or the like in the drum at a front position in parallel, and the winding drum and the traverser are interlocked and connected via a chain transmission mechanism. . 2. The winch device according to claim 1, wherein the front speed reducing means includes a plurality of first speed reducers and second speed reducers.

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