JPS6217933B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cable winding device for supplying power, communicating, etc. between opposing devices.

When supplying power or communicating between moving equipment such as stacker cranes or reclaimers and fixed equipment that controls or monitors the operating status of the equipment,
There is a cable reel in which a predetermined cable is loaded in a spiral state between a rotating body attached to a cable reel and a corresponding non-rotating body.

An example of such a case is shown in Fig. 1, and to explain this below, the cable shown in the figure is a flat cable in which a core shaft 1 and a casing 2 on its outer periphery are provided so as to be relatively rotatable. 3 is spirally wound between the outer periphery of the mandrel and the inner periphery of the casing, and the winding start part 3b of the cable spiral part 3a is fixed to the vicinity of the slit 5 on the mandrel side via the fastening part 4. At the same time, the winding end portion 3c is fixed near the slit 7 on the casing side via the fastening portion 6,
One end 3d side of the cable 3 is passed through the core shaft 1 through the slit 5 and pulled out to the outside, and the other end 3e side is pulled out from the casing 2 through the slit 7 and exposed from each sheath end of the cable. Each core wire is connected to a predetermined location.

In the case of Fig. 1 above, either the core shaft 1 or the casing 2 is a rotating body and the other is non-rotating, but in the case of Fig. 1, the same cable is caused by the relative rotation between the rotating and non-rotating bodies. 3 around the outer circumference of the core shaft 1 to make the cable 3 into a dense spiral state, and when the cable 3 is restored to its original spiral state by relative rotation in the opposite direction to the above. , that is, within the range of the spiral contraction limit and the spiral recovery limit, the rotating and non-rotating bodies can be mutually rotated, and both ends of the cable 3 are pulled out to the outside. The cable connection between the moving device and the fixing device can be performed while the device is attached to the cable reel.

Normally, the above relative rotation amount is 50 rotations or more, and a considerable amount of cable 3 is wound between the core shaft 1 and the casing 2. When it is unraveled, the lower part hangs down as shown in Figure 2, causing various problems.

One of them is that the spiral part 3a is unbalanced due to hanging, which causes rotational runout, making it impossible to operate quietly.The other problem is that each spiral strongly rubs against each other in the upper part of the cable spiral part 3a, and this causes vibrations. Not only does unwinding and subsequent tightening become heavy, but the cable also gets damaged more quickly due to mutual friction.

Furthermore, due to drooping, the lower side of the outermost periphery of the spiral portion reaches the spiral recovery limit with a rotation amount smaller than the set value, and if the cable is unwound forcibly any further, the cable will buckle.

In view of the above-mentioned problems, the present invention has devised a cable winding device that does not cause drooping in the spiral portion, and the configuration thereof will be explained below with reference to illustrated embodiments.

In FIG. 3, 10 is a moving device such as a stacker crane or a reclaimer, and 11 is the moving device 10.
This is a fixed device for supplying power and communicating with the equipment.

A hollow horizontal rotating shaft 14 is disposed on the moving device 10 and is rotatable in forward and reverse directions via a torque motor 12 and a speed reducer 13. Reversible cable 1
A cable reel 16 having a winding body 5 on its winding trunk is attached.

Further, on the moving device 10, a horizontal rotating shaft 1 is provided.
A hollow horizontal core shaft 17 is arranged in a non-rotating state via a support member 18, and is arranged in a straight line with the horizontal core shaft 17. The casings 20A are rotatably combined, and a second casing 20B is rotatably combined on the outer periphery of the first casing 20A via a bearing 19B, and the second casing 20B and the cable reel 16 are connected. They are connected to each other via fixtures 21.

On the other hand, a series of thin cables 22 such as tape-shaped cables connect the outer periphery of the horizontal core shaft 17 and the first casing 2.
0A inner periphery and between the first casing 21A outer periphery and the second casing 20B inner periphery, the cables are wound in a spiral shape and stored separately, thereby creating two cable spiral portions 23.
It is equipped with A and 23B.

Among these, the winding start portion 2 of the cable spiral portion 23A
4A is fixed to the outer periphery of the horizontal core shaft 17, and its winding end portion 25A is attached to the first casing 20.
A is fixed to the inner periphery of the cable, and the cable spiral portion 23
The winding start portion 24B of B is fixed to the outer circumference of the first casing 20A, and the winding end portion 25B thereof is fixed to the inner circumference of the second casing 20B.

Although one cable 15 in the above may be a single cable such as an optical cable, it is usually a composite cable comprising an optical fiber core and a power supply line, and the other cable 22 is a composite cable including an optical fiber core and a power supply line. It consists of an optical cable with a conductive and highly resilient material such as phosphor bronze.

One end ₁₅₁ of the power supply line pulled out from the wrapped portion 15a of the cable 15 is drawn into the cable reel 16 and into the rotating horizontal shaft 14, and is moved via the current collecting ring 26 attached to the rotating horizontal shaft 14. It is connected to the electrical system 27 of the device 10.

Furthermore, _one end 152 of the optical fiber core wire pulled out from the winding portion 15a of this cable 15 is
The optical fiber on the cable 22 side pulled out from the inside of the cable reel 16 to the outside of the cable reel 16 and connected to the cable spiral part 223B is connected to the cable spiral part 223B. The wire end portion 22 ₁ and the one end 15 ₂ of the optical fiber core wire are connected to each other by a connecting jig 28
connected via.

As mentioned above, the cable 22 has two cable spiral parts 23A and 23B, which are housed in a predetermined space.
In this case, the winding end part 25A and the winding start part 24B are continuous, penetrating the peripheral wall of the casing 20A, or the winding end part 25A,
The optical fiber cores drawn out from the winding start portion 24B are connected by connector connection, splicing connection, or the like.

Therefore, the two cable spirals 23A, 23
The cable 22 with B is a series.

On the other hand, the cable spiral portion 23 of this cable 22
The optical fiber end portion ₂₂₂ pulled out from the winding start portion 24A at A is drawn into the horizontal core shaft 17, and connected to the moving device 10 via the connecting jig 28 attached to the horizontal core shaft 17. It is connected to a communication system (optical cord, optical cable, etc.) 29.

In the embodiment shown in FIG. 3 at the top, the cable reel 16 on the moving device 10 is rotated in the forward and reverse directions via the torque motor 12 when the cable 15 is unwound as the device 10 reciprocates. Assuming that the moving device 10 moves forward in the direction away from the fixed device 11 side, the cable reel 16
is rotated in a direction to unwind the cable 15, and the second casing 20B, which is connected to the reel 16 via the connector 21, is also rotated in the same direction.

When the second casing 20B is thus rotated, the cable volute 23B
When the cable spiral part 23B reaches the spiral contraction limit, the first casing 20A is wound tightly around the outer circumference of the cable A, and then the first casing 20A is wrapped around the second casing 20B.
At the same time, the cable spiral portion 23A rotates in the above-mentioned direction, whereby the cable spiral portion 23A is wound tightly around the outer periphery of the horizontal core shaft 17.

Therefore, the cable reel 16 is closed until both cable spiral portions 23A and 23B reach the spiral contraction limit.
The cable 15 can be unwound,
Within that range, the moving device 10 can move forward.

Conversely, when the moving device 10 moves back toward the fixing device 11 side, the cable reel 16 is rotated in the direction to wind up the cable 15, and each casing 20A, 20B is also rotated in the same direction, thereby causing the cable spiral. The portions 23A and 23B are unwound from the outer circumference of the horizontal core shaft 17 and the outer circumference of the casing 20A, respectively, and reach the spiral restoration limit.

In the present invention, the cable reel 1 is
When performing communication and power supply between the moving device 10 and the fixed device 11 while unwinding or winding the cable 15 from the cable 22
The cable spiral portions 23A and 23B of the cable 2 are wound tightly and unwound, respectively.
Even if 2 is a series, its spiral part is 20A,
Since it is distributed like 20B, there is no extreme droop, that is, a large spiral unbalance, which occurs when a single spiral part (Fig. 2) is configured, and therefore the rotational runout caused by this, each cable Local and extreme friction in the spiral parts 23A and 23B causes buckling, and furthermore, the cable spiral part 2
There is no decrease in rotation amount at 3A and 23B,
As a result, while unwinding or winding up one cable 15, the operation of tightening or unwinding the other cable 22 can be performed quietly and easily without damaging the cable 22.

In addition, in the above embodiment, an example was shown in which the cable reel 16 was provided on the moving device 10 side, but when the reel 16 is provided on the fixing device 11 side, the horizontal core shaft 17, casings 20A, 20B, etc. It is installed on the fixing device 11 side in correspondence with the reel 16.

Furthermore, the number of casings 20A and 20B is not limited to two, but three or more may be stacked, and in such a case, the number of cable spiral parts is increased according to the number of casings, and each is divided and stored in a predetermined space. .

As explained above, according to the device of the present invention, a plurality of large and small casings are concentrically stacked and combined on the outer periphery of the horizontal mandrel, and the horizontal mandrel and the casings adjacent in the radial direction and the casings in the same direction The casings adjacent to each other are provided to be able to rotate freely relative to each other, and a series of cables are arranged in a spiral shape between the outer periphery of the horizontal core shaft and the outer periphery of the adjacent casing, and between the inner and outer peripheries of both adjacent casings. The winding start part of each cable spiral part,
Since the winding ends are fixed to the horizontal core shaft and each casing, the spiral state of the cable can be properly maintained, and as a result, the cable can be prevented from being scratched, buckled, etc., and the spiral can be prevented. It also prevents the winding and unwinding range from decreasing, and these operations can be performed quietly and easily.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram schematically showing the prior art of the present invention;
FIG. 2 is an explanatory diagram pointing out the problems of the prior art, and FIG. 3 is a sectional view showing one embodiment of the device of the present invention. 17... Horizontal core shaft, 20A, 20B... Casing, 22... Cable, 23A, 23B... Cable spiral part, 24A, 24B... Winding start part,
25A, 25B... end of winding.

Claims (1)

[Claims] 1 A plurality of large and small casings are concentrically stacked and combined on the outer periphery of the horizontal core shaft, and the horizontal core shaft and the casings are adjacent in the radial direction.
The casings adjacent to each other in the same direction are provided so as to be relatively rotatable, and a series of cables are wound in a spiral shape and stored separately in each casing, and the winding beginning of each cable spiral portion is , a cable winding device in which the winding ends are each fixed to a horizontal core shaft and each casing.