JPH09140017A - Cable winding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect the residual quantity of a cable in operating always. SOLUTION: This device has a cable drum 11 for winding a cable K, a driving means 17 for giving a revolving force to this cable drum 11, a frame body 13 which supports the cable drum 11 freely-rotatably, and a cable guiding mechanism 14 which moves along the center axis direction of the cable drum 11 along with the rotation of the cable drum 11 at a specified speed and guides the winding of the cable K performed successively in a dense condition on the winding surface of the cable drum 11. And a plurality of light sources 15 are arranged equally along the radial direction of the cable drum 11 on the side of one end in the direction of the center axis of the cable drum 11, and a plurality of photosensors 16 are arranged equally along the radial direction of the cable drum 11 on the side of the other end in the direction of the center axis of the cable drum 11 corresponding to these individual light sources 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable winding device, and more particularly to a cable winding device for detecting a cable winding amount.

[0002]

2. Description of the Related Art A conventional cable winding device is mounted on a moving vehicle or the like which is remotely controlled via a cable, and the cable is wound or unwound according to the movement of the moving vehicle.

This conventional cable winding device comprises a cylindrical cable drum around which a cable is wound, drive means for applying a rotational force to the cable drum, and a frame body for rotatably supporting the cable drum. A rotary encoder that is mainly configured and is engaged with the central axis of the cable drum, and an arithmetic control unit that receives the number of output pulses of the rotary encoder are provided.

As a result, when the winding amount of the cable on the outer peripheral surface of the cable drum changes due to the movement of the moving vehicle, a pulse is output from the rotary encoder along with the rotation of the cable drum, and the arithmetic control unit receives this pulse. In addition, the number of pulses is counted, and the calculation amount is calculated from the counted number to calculate the winding amount of the cable on the cable drum.

[0005]

However, in the above-mentioned conventional example, since the winding amount of the cable is detected by counting the output pulses from the rotary encoder, a storage circuit and an arithmetic circuit are required, It had an electrically complicated structure. In such a case, for example, when a power failure occurs in the power supply of this conventional cable winding device due to an unexpected trouble or the like, the information of the counted number of pulses is lost, and then the power supply is restored. However, inconveniences may occur, such as the amount of the cable wound on the current cable drum being unknown, and the maintainability and durability of the entire apparatus may be impaired.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cable winding device capable of improving the inconvenience of the above-mentioned conventional example and improving maintainability and reliability with an electrically simple structure.

[0007]

According to a first aspect of the present invention, a cylindrical cable drum around which a cable is wound, drive means for applying a rotational force to the cable drum, and the cable drum are rotatably supported. And a cable guide mechanism that moves at a predetermined speed along the central axis direction of the cable drum as the cable drum rotates and guides winding in a dense state on the winding surface of the cable drum. Is equipped with.

Further, a plurality of light sources uniformly arranged along the radial direction of the cable drum on one end side in the direction along the central axis of the cable drum, and the central axis direction of the cable drum corresponding to each of these light sources. On the other end side of the cable drum, a plurality of light receiving sensors arranged uniformly along the radial direction of the cable drum are provided.

In the above construction, the cable is wound in advance along the central axis direction of the cable drum on the winding surface of the cable drum without a gap, and the cables are laminated in multiple layers in the radial direction of the cable drum. From the state, a rotational force is applied to the cable drum by the driving means, and thereby the cable is unwound from the cable winding device.

At this time, when the cables sequentially wound on the winding surface of the cable drum are unwound sequentially along the central axis direction, and the outermost layers in the radial direction are all unwound, Further, the winding of the layer below it is unwound, and the cable is unwound from the outermost layer of the cable.

On the other hand, a plurality of light sources provided on one end side in the central axis direction of the cable drum and a plurality of light receiving sensors provided on the other end side face each other across the cable drum, and a shield is placed on the cable drum. If there is no such cable, the light emitted from each light source is arranged to be detected by the corresponding light receiving sensor.

That is, as the number of layers of the cable is reduced, the light emitted from the light source is detected by the plurality of light receiving sensors in order from the outside. Therefore, the number of light receiving sensors in the non-detection state causes the light on the cable drum to be detected. The layer thickness of the cable is detected.

Further, when winding the cable, the cable guides the cable in such a manner that the cable is successively wound along the central axis direction of the cable drum in accordance with the rotation of the cable drum, without any gap. , Are sequentially laminated in the radial direction of the cable drum so that layers of cables are formed.

At this time, similarly to the cable feeding operation, as the number of layers of the cable increases, the irradiation light from the light source is not detected in order from the light receiving sensor on the inner side in the radial direction. The thickness of the cable layer is detected by the number.

According to the second aspect of the present invention, a tubular cable drum around which the cable is wound, drive means for applying a rotational force to the cable drum, a frame body for rotatably supporting the cable drum, and a cable. A cable guide mechanism is provided that moves along a central axis direction of the cable drum at a predetermined speed as the drum rotates and guides winding in a dense state on the winding surface of the cable drum.

Further, a plurality of cable detecting means are provided on the winding surface along the central axis of the cable drum at predetermined intervals.

In the above structure, the cable drum is wound by the drive means from one end of the cable drum in the central axis direction to the other end thereof in a single layer on the winding surface in order without any gap. Rotation is urged on the cable, and the cable on the winding surface is unwound from the one end side of the cable drum in order.

On the other hand, since each cable detecting means on the winding surface of the cable drum detects the winding state of the cable, the cable in the winding state is unwound as described above, so that each cable is unwound. The detection means is switched to the non-detection state from the one end side in order, and the remaining amount of the cable in the winding state is detected by the number of detection sensors that are detecting the cable.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIG. This FIG. 1 shows a cable winding device 10
The vehicle 20 for special work equipped with is shown.

This special work vehicle 20 is provided with a cable winding device 10, a drive wheel 21 for moving the entire device, and a drive motor (not shown) for biasing the drive wheel 21 with a rotational force. It comprises a biasing means 22, a drive motor control circuit 23 for controlling the operation of the drive motor, and a control device 25 for inputting the drive operation, which is connected by a control signal cable 24. The above-mentioned drive motor is supplied with electric power from a remote place by a cable K.

Here, the cable winding device 10 has a tubular cable drum 11 around which the cable K is wound, a driving means for applying a rotational force to the cable drum 11, and a rotatably supporting cable drum 11. The frame body 13 and the cable drum 11 move along the central axis direction of the cable drum 11 at a predetermined speed as the cable drum 11 rotates, and guide the winding in a dense state on the winding surface of the cable drum 11 sequentially. And a cable guide mechanism 14.

Further, the light emitting diodes 15 as a plurality of light sources evenly arranged along the radial direction of the cable drum 11 on one end side in the direction along the central axis of the cable drum 11 and the respective light sources 15 are provided. Then, on the other end side of the cable drum 11 in the central axis direction, the cable drum 11
And a plurality of phototransistors 16 as a plurality of light receiving sensors evenly arranged along the radial direction.

Further, the cable winding device 10 includes
A detection circuit (not shown) is provided, and the operation control of the cable remaining amount display device 17 is performed based on the detection signal from each phototransistor 16.

Explaining each part in detail, first, the drive wheel 21 is rotatably disposed under the frame 13, and is engaged with the drive motor of the moving operation urging means 22 via a gear mechanism (not shown). This causes the special work vehicle 20 to move.

One end of the transmission belt 17, which is an endless belt, is engaged with the axle of the drive wheel 21, and the other end of the transmission belt 17 has a central shaft of the cable drum 11 and a transmission mechanism (not shown). Are connected through. That is, the driving means of the cable winding device 10 is composed of the transmission belt 17 and the transmission mechanism, and the driving force thereof is the moving operation urging means 2.
The structure is obtained from the second drive motor.

With this structure, movement of the special work vehicle 20 and rotation of the cable drum 11 are performed at the same time. Further, the transmission mechanism moves the special work vehicle 20 in the S direction shown in the figure. When rotating, the cable drum 21 is rotated in the feeding direction of the cable K, and the number of rotations of the cable drum 11 is adjusted so that the cable K having the same length is fed according to the movement amount of the special work vehicle 20. Is done.

Here, as the transmission mechanism (not shown), a gear mechanism or a combination of a belt wheel mechanism and a transmission belt is used, and at the same time, if necessary, a clutch mechanism for disconnecting the drive wheel 21 and the cable drum 11 from each other is used. It may be provided.

In the drive motor control circuit 23, the control unit 2
The operation of the drive motor is controlled based on the control signal from the control unit 5. That is, as a result, each operation such as the rotation speed of the drive motor and start / stop is input from the control device 25. Here, the control device 25 and the drive motor control circuit 2
The control signal cable 24 for communicating with 3 may be included in the cable K. As a result, the special work vehicle 20 can be remotely controlled from the power supply site.

Next, the cable winding device 10 will be described. First, the frame body 13 is a box body having two open front and rear directions (the S direction and the opposite direction in FIG. 1A), and the inside thereof. A cable drum 11 is rotatably arranged in the cable.

The cable drum 11 has a shape in which a columnar portion and a collar slightly larger than the columnar portion are provided at both ends of the columnar portion, and the outer peripheral surface of the columnar portion is wound between the collar and the collar. The cable K is wound on the surface 11A. Further, the cable drum 11 is formed of a transparent material so as to transmit the irradiation light of the light emitting diode 15 which will be described later.

The front side of the cable drum 11 (FIG. 1A)
The cable guide mechanism 14 is disposed on the side opposite to the S direction). The cable guide mechanism 14 includes two guide rails 14A and 14B arranged on the frame 13 along the central axis of the cable drum 11, and a slider 14C slidably engaged with the guide rails 14A and 14B.
And a holding member 14D disposed on the slider 14C and holding the cable K loosely.

The guide rail 14A is provided with a spiral groove, and the slider 14C is formed in such a shape that the engaging portion with the guide rail 14A engages with the groove. The cable guide mechanism 14 is provided with rotational force urging means (not shown) for urging the rotational force to the guide rail 14A.
C is reciprocally moved along the guide rails 14A and 14B. The rotational force urging means obtains the driving force from the drive motor of the moving operation urging means 22 described above, whereby the movement of the special work vehicle 20, the winding operation of the cable K, and the movement of the cable K are performed. Guide operation is performed at the same time.
That is, when the cable K is wound, the slider 14C moves at a predetermined speed along the central axis direction of the cable drum 11, so that the cable K on the winding surface of the cable drum 11 from the end without a gap. It is wound in order.

A plurality of light emitting diodes 15 and a plurality of phototransistors 16 are arranged on both ends in the central axis direction of the cable drum 11 with the cable drum 11 sandwiched therebetween, with their light emitting surface and light receiving surface facing each other. ing.
Further, the respective light emitting diodes 15 and the respective phototransistors 16 are arranged on the frame body 13 so as to be in a row at equal intervals along the radial direction of rotation of the cable drum 11 almost directly above the central axis of the cable drum 11. It is set up.

As shown in FIG. 1 (B), each light emitting diode 15 has its irradiation light detected by each corresponding phototransistor 16, and the adjacent light emitting diode 15 is detected. Is set to be equal to the cross-sectional diameter of the cable K (the same applies to the phototransistor 16). In addition, it is closest to the central axis of the cable drum 11 (downward in FIG. 1B).
The arranged light emitting diode 15 is connected to the cable drum 11
The height is set to be almost the same as that of the cable K directly wound on the winding surface 11A.

As described above, the cable drum 11 is
Since the cable K is wound around the cable drum 11, the light emitted from the light emitting diode 15 is blocked by the cable K and reaches the phototransistor 16 because it is formed of a material that transmits light. become unable.

On the other hand, the cable K is connected to the cable drum 11
In order to wind the cable drum 11 from one end to the other end in succession on the take-up surface 11A and to overlap it again and to wind it again from the one end to the other end without a gap, A layer of the cable K is formed on the winding surface 11A of the cable drum 11. That is, cable K
By sequentially forming these layers, the irradiation light of each light emitting diode 15 is prevented from reaching the corresponding phototransistor 16 in order from the position close to the central axis of the cable drum 11.

Therefore, an individual phototransistor 16 for detecting the light emitted from each light emitting diode 15 with respect to the change in the number of layers of the cable K formed by being wound around the cable drum 11, that is, the winding amount of the cable. Since the number changes, it is possible to detect the winding amount of the cable K wound around the cable drum 11 based on the number of phototransistors 16 in the detection state.

When the phototransistor 16 detects the irradiation light from each light emitting diode 15, a detection signal is output to the detection circuit. This detection circuit is based on these detection signals and is based on these detection signals.
The display operation of is being performed. The cable winding amount display device 18 is arranged on the upper portion of the frame body 13 and is equipped with the same number of display lamps as the phototransistors 16 in a row.

Each of these display lamps is normally lit, and when the detection signal of each phototransistor 16 is detected by the detection circuit, the corresponding display lamp is turned off. For this reason, for example, when the cable K is sequentially wound out from the state in which it is wound around the cable drum 11 by the maximum amount,
Since the light is sequentially fed out from the outermost layer of the cable drum 11, the irradiation light from each light emitting diode 15 is sequentially detected from the uppermost phototransistor 16 shown in FIG. In response, the detection circuit
The indicator lamps of the cable winding amount display device 18 are turned off sequentially from the end, and the remaining amount of the cable K is visually informed to the surroundings by the number of indicator lamps that are turned on.

Further, this cable winding amount display device 18
, A warning sound is emitted when the number of indicator lamps in the lit state decreases (for example, when the number of indicator lamps becomes two), and an auditory effect is generated near the special work vehicle.
A sound source is provided to inform that the remaining amount of the cable K is low.

Further, the detection circuit and the drive motor control circuit 2
3 when the indicator lamp in the lighting state of the cable winding amount display device 18 becomes the last one, that is,
When the detection signal of the irradiation light is input to the detection circuit by the second phototransistor 16 from the center of the cable drum 11, the rotation of the drive motor is stopped via the drive motor control circuit 23. Is also good.

As a result, the special work vehicle 20 stops the moving operation and the feeding operation of the cable K before the remaining amount of the cable K wound around the cable drum 11 is exhausted, and, for example, the arrival of the cable K. It is possible to avoid a situation in which the cable K is damaged in an attempt to move the special work vehicle 20 to a remote location that is not present.

The operation of the first embodiment will be described.

First, in the vehicle 20 for special work, the maximum amount of the cable K is wound around the cable drum 11 at the starting point thereof, and the cable winding amount display device 18 is provided.
All the indicator lamps of are lit.

Then, the driving operation of the special operation vehicle 20 is performed by driving the drive motor of the moving operation urging means 22,
The feeding operation of the cable K by the rotation of the cable drum 11 and the reciprocating operation of the slider 14C of the cable guide mechanism 14 are started.

In accordance with the movement of the special work vehicle 20, the cable K having a length substantially equal to the movement amount of the special work vehicle 20.
Are sequentially fed out, whereby the cable drum 11
The number of layers of the cable K formed on the tape decreases. Along with this decrease, the light emitting diodes 1 are sequentially arranged from the phototransistor 16 on the outer peripheral side of the cable drum 11.
The irradiation light from 5 is detected, and the detection circuit receives the detection signals from these phototransistors 16 and sequentially turns off the display lamps of the cable winding amount display device 18.

In the cable winding amount display device 18, a warning sound is emitted from the sound source when the number of indicator lamps that are lit decreases from three to two, and the remaining amount of the cable K to the operator is small. Be informed.

When the cable K is wound up,
The drive motor performs rotation in the direction opposite to the feeding operation, whereby the special work vehicle 20 moves in the direction toward the starting point. Further, the cable K having a length substantially equal to the movement amount of the special work vehicle 20 is wound, and further, the reciprocating operation of the holding member 14D provided on the slider 14C of the cable guide mechanism 14 causes the cable drum 11 to move. The cable K is guided so that the winding operation of the cable K is performed without gaps along the central axis direction.

Each time one layer of the cable K is formed, the cable K is further laminated thereon, and accordingly, from the phototransistor 16 near the center axis of the cable drum 11, the light emitting diode 15 starts from the light emitting diode 15. Irradiation light is no longer detected, and the detection signal from each phototransistor 16 is interrupted in the detection circuit, so the display lamps of the cable winding amount display device 18 are sequentially turned on.

Then, the operation for the special work vehicle 20 is completed by returning to the starting point.

In the first embodiment, since the plurality of light emitting diodes 15 and the plurality of phototransistors 16 are arranged in a row in the radial direction of rotation of the cable drum 11 with the cable drum 11 interposed therebetween, these By detecting the irradiation light by the cable drum 1
It is possible to detect the number of layers of the cable K wound in layers on one winding surface 11A, that is, the winding amount.

Further, the number of phototransistors 16 blocked by the cable K and from which the irradiation light is not detected directly indicates the amount of the cable K wound around the cable drum 11. A circuit or a memory circuit is not required. For this reason, for example, even if the power supply to the special work vehicle 20 is temporarily stopped, if the power is supplied again, the cable wound around the cable drum immediately. It has the advantage that the amount of K can be detected.

Here, the above-mentioned cable winding amount display device 18 may be arranged near the control device via the cable K as in the case of the control device 25. Thereby, even if the special work vehicle 20 moves to a remote place, the operator can know the winding amount of the cable K.

The plurality of light emitting diodes 15 and the plurality of phototransistors 16 may be arranged so as to face each other on the inner side surface of each flange-shaped portion of the cable drum 11. As a result, the cable drum 11
It is not necessary to limit the material of the material to a transparent material.

The second embodiment is shown in FIG. The second embodiment shows a special work vehicle 40 equipped with a cable winding device 30. In this second embodiment, FIG.
The same parts as those of the special work vehicle 20 shown in (4) are designated by the same reference numerals, and duplicate description will be omitted.

In this special work vehicle 40, a plurality of cable detecting means are provided on the cable drum 31 of the cable winding device 30 in place of the plurality of light emitting diodes 15 and the plurality of phototransistors 16. Other configurations are the same as those of the special work vehicle 20. Therefore, the cable drum 31 will be described in detail.

The cable drum 31 has a shape in which a columnar portion and a collar slightly larger than the columnar portion are provided at both ends of the columnar portion, and the cable drum 31 is the outer peripheral surface of the columnar portion between the collar and the collar. The cable K is wound on the take-up surface 31A.

The winding surface 31 of the cable drum 31
On A, a plurality of touch switches 35 as a plurality of cable detection means are provided. The touch switch 35 is arranged on the winding surface 31A of the cable drum 31, detects the state where something touches the detection surface, and detects "OF".
The state is switched from "F" to "ON".

The touch sensors 35 are evenly arranged in a line along the central axis direction of the cable drum 31 from one end to the other end, and on the winding surface 31A of the cable drum 31. When the cable K is wound in order from the end without gaps, the touch sensor 35 is correspondingly wound.
Also, it is designed to switch from the end to the "ON" state one by one. Then, "O
The “N” and “OFF” signals are applied to the frame 1 of the cable drum 31.
Slip ring 3 provided at the end of the rotary shaft engaging with 3.
2 and the switch signal cable 33 output to a detection circuit (not shown).

In the detection circuit, "O" from the touch sensor is detected.
When the "N" signal is received, the respective display lamps of the cable winding amount display device 38 provided with the display lamps of the number corresponding to each touch sensor 35 are turned on, and in the case of the "OFF" signal, the display lamps are turned on. To turn off the light. As a result, in the cable winding amount display device 18, the display lamp is turned on according to the amount of the cable K wound around the cable drum 31, so that the cable drum 3 has a visual effect.
The remaining amount of the cable K on 1 can be known to the surroundings.

The cable winding amount display device 38 is
Similar to the cable winding amount display device 18 described above,
It is equipped with a sound source that emits a warning sound when the number of indicator lamps in the lit state decreases from three to two. by this,
A cable K can be placed near the special work vehicle by an auditory effect.
It can inform that the remaining amount of is low.

Further, the detection circuit and the drive motor control circuit 2
3 when the indicator lamp in the lighting state of the cable winding amount display device 38 becomes the last one, that is,
When the number of "ON" signals output to the detection circuit decreases from two to one, the drive motor control circuit 23 may be used to stop the rotation of the drive motor.

As a result, the special work vehicle 40 stops the moving operation and the unwinding operation of the cable K before the cable K wound around the cable drum 31 disappears, and, for example, at a remote place where the cable K does not reach. It is possible to avoid a situation in which the cable K is damaged while trying to move the special work vehicle 40.

The operation of the second embodiment will be described.

First, in this special work vehicle 40, the cable K is sequentially wound on the winding surface 31A of the cable drum 31 from one end in the central axis direction to the other end thereof without a gap. All the display lamps of the quantity display device 18 are in a lit state.

By driving the drive motor of the moving operation urging means 22, the moving operation of the special work vehicle 40,
The feeding operation of the cable K by the rotation of the cable drum 11 and the movement operation of the slider 14C of the cable guide mechanism 14 are started.

In accordance with the movement of the special work vehicle 40, the cable K having a length substantially equal to the movement amount of the special work vehicle 40.
Are sequentially fed out, whereby the cable drum 31
The remaining amount of the cable K wound around is decreasing.

With this decrease, as the cable K wound around each touch sensor 35 is paid out, "OFF" signals are sequentially output from the touch sensors 35 at the ends, and in response to this, the detection circuit. Then, the display lamps of the cable winding amount display device 38 are sequentially turned off.

In the cable winding amount display device 38, a warning sound is emitted from the sound source when the number of indicator lamps that are lit decreases from three to two, and the remaining amount of the cable K to the operator is small. Be informed.

When the cable K is wound up,
The drive motor rotates in the direction opposite to the feeding operation, whereby the special work vehicle 40 moves in the direction opposite to that in the feeding operation. Further, the cable K having a length substantially equal to the movement amount of the special work vehicle 40 is wound, and further, the holding member 14D mounted on the slider 14C of the cable guide mechanism 14 is moved to move the cable drum 31. The cable K is guided so that the winding operation of the cable K is performed without gaps along the central axis direction.

Then, in response to the winding operation of the cable K, the touch sensor 35 at the end of the cable drum 31 outputs "ON" signals in order, and the detection circuit receives this signal and the cable winding amount display device 18 displays. Turn on the display lamps in sequence.

Then, when the movement of the special work vehicle 40 is stopped, each of the above operations is completed.

In the second embodiment, since the plurality of touch sensors 35 are arranged on the winding surface 31A of the cable drum 31 along the central axis, the cable K is wound on these detection surfaces. It is possible to detect the amount of the cable K wound around the cable drum 31 with the length of one turn on the winding surface 31A of the cable drum 31 as one unit depending on whether or not the turn is performed.

Further, since the number of the touch sensors 35 that have detected the state where the cable K contacts the detection surface directly indicates the amount of the cable K wound around the cable drum 31,
Unlike the conventional case, an arithmetic circuit or a memory circuit is not required. Therefore, for example, even if the power supply to the special work vehicle 40 is temporarily stopped, if the power is supplied again, the cable drum 31 is immediately transferred to the special work vehicle 40. It has an advantage that the amount of the cable K wound around can be detected.

Here, the structure of the light emitting diode 15 and the phototransistor 16 disclosed in the first embodiment and the structure of the touch switch 35 disclosed in the second embodiment may be used together. This allows the operator to generally know the change in the winding amount of the cable K by the amount of each layer of the cable K, and when the remaining amount of the cable K becomes the last layer, the cable K is It is possible to know the change status of the remaining amount of the cable drum 11 by one winding unit, and the operator can more effectively know the change of the cable amount through the entire length of the cable K.

[0076]

According to the first aspect of the present invention, a plurality of light sources and light receiving sensors are provided which sandwich the cable drum and are arranged along the radial direction of the cable drum, and the irradiation light is detected by these. This makes it possible to detect the winding amount of the cable wound in layers on the winding surface of the cable drum.

Further, since the number of light-receiving sensors, which are shielded by the cable and the irradiation light is not detected, directly indicates the amount of the cable wound around the cable drum, an arithmetic circuit or a storage circuit is used as in the conventional case. Therefore, even if a temporary power failure occurs in the cable winder, for example,
If power is supplied again, it is possible to detect again the amount of cable wound on the cable drum.

According to the second aspect of the present invention, since the plurality of cable detecting means are arranged along the central axis on the winding surface of the cable drum, the cables are wound on these detecting surfaces. It is possible to detect the amount of the cable wound on the cable drum for each length corresponding to one round of the winding surface depending on whether or not the cable drum is present, and it is possible to detect the remaining amount of the cable in a minute unit.

Further, since the number of the cable detecting means which has detected the state where the cable is in contact with the detection surface directly indicates the amount of the cable wound around the cable drum, the arithmetic circuit or the storage circuit is conventionally used. Unnecessary and for this reason,
For example, even if a temporary power failure occurs in the cable winder,
When power is reapplied, it is immediately possible to detect the amount of cable wound on the cable drum.

As described above, the present invention can provide an unprecedented excellent cable winding device in which the reliability and the durability of the entire device are improved by the electrically simple structure.

[Brief description of the drawings]

FIG. 1 is a diagram showing a first embodiment of the present invention, and FIG.
FIG. 1A is a perspective view of a vehicle for special work, and FIG. 1B is an explanatory view of main parts of the cable winding device disclosed in FIG. 1A.

FIG. 2 is a diagram showing a second embodiment of the present invention, and FIG.
FIG. 2A is a perspective view of a special work vehicle, and FIG. 2B is an explanatory view of a main part of the cable winding device of the cable winding device disclosed in FIG. 2A.

[Explanation of symbols]

 10, 30 Cable winding device 11, 31 Cable drum 11A, 31A Winding surface 13 Frame body 14 Cable guide mechanism 15 Light emitting diode (light source) 16 Phototransistor (light receiving sensor) 17 Transmission belt (driving means) 35 Touch sensor (cable) Detection means) K cable

Claims (2)

[Claims] 1. A tubular cable drum around which a cable is wound, drive means for applying a rotational force to the cable drum, and a frame body for rotatably supporting the cable drum.
A cable guide mechanism that moves along the central axis direction of the cable drum at a predetermined speed as the cable drum rotates and that guides winding in a dense state on the winding surface of the cable drum. In the cable winding device, a plurality of light sources evenly arranged along the radial direction of the cable drum on one end side in the central axis direction of the cable drum, and a central axis of the cable drum corresponding to each of the light sources. A cable winding device, characterized in that a plurality of light receiving sensors, which are evenly arranged along the radial direction of the cable drum, are provided on the other end side in the direction. 2. A cylindrical cable drum around which a cable is wound, drive means for applying a rotational force to the cable drum, and a frame body for rotatably supporting the cable drum.
A cable guide mechanism that moves along the central axis direction of the cable drum at a predetermined speed as the cable drum rotates and that guides winding in a dense state on the outer peripheral surface of the cable drum is provided. In the cable winding device, a plurality of cable detecting means are provided on the winding surface along the central axis direction of the cable drum at predetermined intervals.