JPH0158105B2 - - Google Patents

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a traverser synchronizer for a winch used in a ship to perform aligned winding at an arbitrary pitch when winding/unwinding cables, etc. .

[Conventional technology]

When winding a cable, etc. (or wire, cable, rope, etc.) on a winch, a traverser is used to guide the cable in the axial direction to the winding drum and wind it in an aligned manner. It is necessary to work in synchronization with the winch axis that supports the winding drum precisely at a pitch equal to the outer diameter of the cable, etc. (or the reversing groove of the winding drum).

[Problem that the invention seeks to solve]

Normally, this synchronization is achieved by linking the winch shaft and traverser shaft with gears, chains, etc., but in this case,
The disadvantage is that the feed ratio of the traverser is fixed (unchangeable), making it difficult to accommodate cables of different diameters.

In addition, the groove that allows the traverser to reciprocate is cut in order to wind one type of cable in an aligned manner, so when the cable is thicker than this, when the cable being wound reaches the end of the winding drum, the This has the disadvantage that the cable rubs the brim of the winding drum, and when the cable is thin enough, there is a gap between the cable and the brim when they reach the same end, making it difficult to wind in an aligned manner in either case. was.

[Means for solving problems]

The present invention solves this problem by electrically interlocking a winch shaft and a traverser shaft, thereby accurately winding a cable of varying thickness as shown in the first diagram.

A first aspect of the present invention is a winch 1, a winding drum 2 of this winch 1 that winds a cable 7, etc.
A traverser 14 that guides this cable 7 etc. in the direction of the winch shaft 3 that supports the winding drum 2, a traverser shaft 11 that guides this traverser 14 to reciprocate, and a servo motor 22 that drives it.
In this case, a signal a proportional to the speed of the winch shaft 3, a signal b proportional to the speed of the traverser 14, and a signal d from the thickness switch 35 are input to the calculator 34 to generate a correction signal c. This correction signal c is added to the signal a proportional to the speed of the winch shaft 3 to control the servo motor 22.

A second invention of the present invention includes a winch 1, a winding drum 2 of this winch that winds up a cable 7, etc., and a traverser 14 that guides this cable 7, etc. in the direction of a winch shaft 3 that supports the winding drum 2. , which consists of a traverser shaft 11 that guides the traverser 14 in reciprocating motion, and a servo motor 22 that drives it, a signal a proportional to the speed of the winch shaft 3 and a signal b proportional to the speed of the traverser 14. and the signal d from the thickness switch 35 are input to the calculator 34 to generate a correction signal c, and this correction signal c is added to the signal a proportional to the speed of the winch shaft 3 to control the servo motor 22. a limit switch 5 which is controlled and actuated by a dog 50 provided thereon when the traverser 14 reaches the end;
1 is provided, and the signal e from the limit switch 51 causes the traverser 14 to be reversed earlier by an amount corresponding to the increase in the thickness of the cable 8.

[Effect]

In the first aspect of the present invention, since the signal d from the thickness switch 35 is input to the arithmetic unit 34, the traverser 14 is driven accurately at a pitch corresponding to the thickness of the cable being wound.

In the second aspect of the present invention, the signal e from the limit switch 51 activated by the dog 50 when the traverser 14 reaches the end position is input to the calculator 34, so the traverser 14 When is thick, it is reversed earlier by an amount corresponding to the increase in thickness.

〔Example〕

As shown in FIGS. 2 and 3, the winding drum 2 of the hydraulic winch 1 is supported by a winch shaft 3, and this winch shaft 3 is connected to a hydraulic motor 4 via a gear 9.
This hydraulic motor 4 is driven by hydraulic pressure (not shown).

Several layers of thin cable 7 as shown in the first figure are wound around the winding drum 2, and several layers of thick cable 8 are further wound thereon.

A traverser 14 is provided in front of the winding drum 2 to guide the cable 7 laterally as shown in FIGS. 2 and 3. The traverser 14 is a vertical roller that engages the traverser shaft 11 parallel to the winch shaft 3 and the cable 7 . The traverser shaft 11 is provided with two clockwise and counterclockwise spiral grooves 12 and 13 that intersect in a figure 8 shape, as shown in FIG. It is provided to reciprocate in the lateral direction.

As shown in FIGS. 2A and 2B, the winch shaft 3 has a sprocket 16, a chain 17, and a sprocket 1.
8, 19, second chain 20, sprocket 2
1, and the traverser shaft 11 via the clutch 15
Connect to. (This is hereinafter referred to as mechanical synchronization.) Furthermore, the servo motor 22 is connected to the traverser shaft 11 via a reduction gear 23 and a clutch 15.
(This is hereinafter referred to as servo synchronization.) Either mechanical synchronization or servo synchronization can be selected and connected by switching the clutch 15.

Next, the operation of the above device will be explained.

When the clutch 15 is connected with mechanical synchronization selected, the winch shaft 3 and the traverser shaft 11 are mechanically connected, and the rotational force of the winch shaft 3 is transmitted to the sprocket 16, the chain 17, the sprockets 18, 19, and the second sprocket. The transmission is transmitted to the traverser shaft 11 through the chain 20, sprocket 21, and clutch 15, and the traverser 14 reciprocates in the lateral direction due to the spiral groove 12 or 13, and the cable 7 is wound in an orderly manner on the winding drum 2. This guide will guide you through the process. This is a known method and is the subject of this application for the purpose of synchronizing thin cables.

When the clutch 15 is connected by selecting servo synchronization, the winch shaft 3 and the traverser shaft 11 are electrically connected, and the traverser shaft 11 is driven by a servo motor 22 via a reduction gear 23.

Next, referring to FIG. 4, the operation when the winch shaft 3 and the traverser shaft 11 are electrically connected will be explained.

When the winch 1 operates, the winch shaft 3 rotates, and a rotary encoder 30 provided on the winch shaft 3 generates a pulse signal a proportional to the number of rotations of the winding drum 2 at a rate of 600 pulses per revolution. a is converted by the F/V converter 31 into a voltage signal a ₁ proportional to its frequency, and input to the adder circuit 32 .

On the other hand, the signal a is input to the discrimination frequency divider 33 and generates a signal a ₂ for determining the rotational direction of the winch shaft 3, that is, whether _it is feeding or hoisting.
It is input to the V converter 31 and its output signal _a1 is switched to positive or negative. Furthermore, this signal a is reduced to 1/3 of the frequency by the discrimination frequency division 33 to become a voltage A signal _a3 proportional to the speed of the winch shaft 3, which is input to a microcomputer, hard logic circuit, or analog/digital computing unit 34. be done. This computing unit 34
The calculation C=A-αB is performed in . α is a constant determined by the cable 7 or cable 8, and is determined by the signal d from the thickness switch 35. Servo motor 22
The rotational speed of is set to 1 by the rotary encoder 43.
Detected with 300 rotation pulses, 1/50 with discrimination frequency division 44
The frequency is divided into a signal b of voltage B. Therefore, voltage B is a voltage proportional to the speed of traverser 14. This signal b is supplied to the arithmetic unit 34.

The constant α is determined so that the voltage C is a correction voltage of the traverser 14 and becomes 0 when the movement of the traverser 14 is synchronized with the winding drum 2.
This modified signal c of the voltage C is converted into an analog signal _c1 by the D/A converter 36 and sent to the adder circuit 32, where it is added to the signal _a1 to modify it, and this modified signal a ₆ is a switch 3 for thin cable 7 or thick cable 8 which is switched by the above signal d.
7, it is converted into a voltage signal _a7 corresponding to the thin cable 7 or thick cable 8 being wound at that time, and is sent to the adder 40 as a speed setting signal _a8 for the servo motor 22 via the reversing relay 39. is input. The speed setting signal _a8 above is the servo amplifier 41
is amplified and drives the traverser 14 via the servo motor 22 and reduction gear 23. The speed of this servo motor 22 is detected by a tacho generator 42, fed back to an adder 40, and controlled to be constant.

The traverser 14 automatically reverses and reciprocates at its end due to the communication between the spiral grooves 12 and 13, but when a thick cable 8 is wound, the traverser 14 moves more easily at the end than when a thinner cable 7 is wound. It is necessary to reverse the thickness as quickly as possible.

In this case, when the traverser 14 shown in FIG. 2 reaches the end, the dog 50 at the bottom operates the limit switch 51, and the signal e is input to the calculator 34, which generates the signal _e1 . and switches the reversing relay 39, and depending on whether or not the reversing amplifier 38 is used, the servo motor 22 is reversed to reverse the gear 9 and the traverser shaft 11, causing the traverser 14 to move backwards, and the traverser 14 is moved by the increment of the thickness of the thick cable 8. It is something that can be reversed as quickly as possible.

〔effect〕

As described above, according to the first aspect of the present invention, the traverser 14 is driven accurately at a pitch corresponding to the thickness of the cable being wound around, so that the traverser 14 is driven accurately at a pitch corresponding to the thickness of the cable being wound. Cables can also be wound in precise alignment.

Further, according to the second aspect of the present invention, the traverser 1
4. When the cable being wound is thick, the winding is reversed earlier corresponding to the increase in the thickness of the cable, so even when the cable is thick, the cable does not rub against the collar of the winding drum. Also, aligned winding can be performed in that part as well.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram showing the outline of a cable according to an embodiment of the present invention, Fig. 2 A is a schematic front view of its winding drum, Fig. 2 B is a left side view of Fig. 2 A, and Fig. 3 A is a schematic plan view thereof, B is an enlarged view of the traverser axis, and FIG. 4 is an explanatory diagram of the traverser synchronization circuit. 1... Winch, 2... Winding drum, 3... Winch shaft, 7... Cable, 8... Thick cable, 14... Traverser, 11... Traverser shaft, 22... Servo motor, 35... Thick cable Switcher, 34...Arithmetic unit, 50...Dog, 51...
Limit switch, a, b, c, d...signal.

Claims (1)

[Claims] 1. A winch, a winding drum of the winch that winds up a cable, etc., a traverser that guides the cable, etc. in the direction of a winch shaft that supports the winding drum, and a system for reciprocating the traverser. A signal proportional to the speed of the winch shaft, a signal proportional to the speed of the traverser, and
A correction signal is generated by inputting the signal from the thickness switching device to a computing unit, and the correction signal is added to the signal proportional to the speed of the winch shaft to control the servo motor. Winch traverser synchronizer. 2. A winch, a drum of this winch that winds up a cable, etc., a traverser that guides this cable, etc. in the direction of a winch shaft that supports the winding drum, a traverser shaft that guides this traverser to reciprocate, and In a drive device consisting of a servo motor, a signal proportional to the speed of the winch shaft, a signal proportional to the speed of the traverser, and a signal from the thickness switch are input to a computing unit to generate a correction signal. A correction signal is added to the signal proportional to the speed of the winch shaft to control the servo motor, and a limit switch is provided which is activated by a dog attached to the traverser when the traverser reaches the end, and the traverser is activated by the signal from this limit switch. A winch traverser synchronizer characterized in that the winch is reversed earlier in response to an increase in the thickness of a cable, etc.