JPS5820530B2 - Cable supply device for reciprocating equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for supplying reciprocating equipment with cables for power or control signals, or hoses for transferring fluids such as compressed air, gas, oil, etc.

Conventionally, as a cable or hose supply device for reciprocating equipment, slip rings, cable reels, etc. have been used for power or control signals, and rotary joints, etc. have been used for fluids such as compressed air, gas, oil, etc. I've been exposed to it.

Among these, devices that handle power or control signals have sliding parts such as slip rings and brushes in the circuit, so wear and contact failure must always be considered, making maintenance management troublesome. Met.

In particular, equipment that handles weak control signals has the drawback that poor contact due to slip rings can cause serious accidents.

In addition, it is difficult to maintain a completely airtight structure with a rotary joint for fluid, and there is a drawback of fluid leakage.

The present invention has no sliding parts or rotary joints,
It is an object of the present invention to provide a cable supply device having a simple structure and free from the above-mentioned drawbacks.

EMBODIMENT OF THE INVENTION Hereinafter, an embodiment will be described illustrating an apparatus for supplying cables to reciprocating equipment according to the present invention.

In FIGS. 1 and 2, 1 is a rotating body, 2 is a fixed body, 3a and 3b are truncated conical fixed bodies (hereinafter referred to as umbrella-shaped fixed bodies), and the fixed body 21 is fixed. ing.

In this embodiment, the umbrella-shaped fixed body is provided in two stages, but it is not necessarily limited to one stage, but it can be set in one stage or three or more stages.

4 is a coupling box for coupling a power cable, compressed air hose, etc. with a supply source.

5a and 5b are both connecting portions of the cables to the fixed body 2, and 6a and 6b are both connecting portions of the cables to the rotating body 1.

In this supply device configured like this, for example, the electric cable A rises from the coupling box 4, and the coupling part 5
After the fixed body 21 is fixed at point a, it is stacked in a spiral shape on the umbrella-shaped fixed body 3a, and the rotary body 11 is fixed at the connecting part 6a, and the equipment is supplied to reciprocate.

Next, for example, the air hose B rises from the coupling box 4, is fixed to the fixed body 2 at the coupling part 5b, is loaded in a spiral shape on the umbrella-shaped fixed body 3b, and is mounted on the rotating body 1 at the coupling part 6b.
1ζ is fixed and supplied to equipment that rotates back and forth.

By the way, the spiral state when cables are loaded on the umbrella-shaped fixed body depends on the rotation angle, the moving distance, the thickness of the cable or hose, and the number of cables, and the number of stages, diameter, and angle of the umbrella-shaped fixed body. Select and determine as appropriate.

In the above configuration, when the rotating body 1 rotates as indicated by the arrow P shown in the second figure, the cable or hose connects to the rotating body 1 at the connecting portions 6a, 6b, as shown by the two-dot chain line in the same figure.
It moves upward on the umbrella-shaped fixed body while being pulled and rotating.

Next, when the rotating body 1 rotates in the opposite direction t and returns to its original position, the cable or hose descends under its own weight t on the angled umbrella-shaped fixed body and returns to the position indicated by the solid line in Fig. 2. .

In addition, in the above embodiment, an example was shown in which two stages of umbrella-shaped fixed bodies were provided, one for electric power and one for air.
The number of stages can be increased.

As an experimental example of the device of the present invention, it was applied as a power supply to the ladle rotating equipment of continuous casting equipment and as a supply device for oil, air, etc.;
The power supply, oil, air, etc. supply equipment can be housed in a small space, and there is no need for maintenance and management.
Furthermore, the desired effect was achieved without any fluid leakage.

As described above, the device of the present invention has a simple configuration with an umbrella-shaped fixed body, requires less equipment space, has no sliding parts or rotary joints, and uses the weight of the cable or hose to wrap and wind the cable or hose. Since the device is returned to its original position, it performs flexible motion without becoming tangled, and has the following advantages when compared with conventional devices.

1. When using a slip ring, there are problems such as maintenance due to brush wear, contact resistance when energizing the control signal, and the risk of explosion due to sparks under organic gas.
Since the device of the present invention has no bare electrical parts, there is no need for the above-mentioned concerns, maintenance and management is not required, and control signal energization can be carried out reliably.

2 When using a cable reel, when rewinding,
Although it requires power, the device of the present invention loads cables or hoses on an umbrella-shaped inclined surface, so it can be rewound using its own weight.

3. When using a rotary joint, it is difficult to maintain a completely airtight structure, but since the device of the present invention does not have moving parts such as the mouth and rotary joint, it is possible to improve the airtightness, and the It is possible to completely eliminate fluid leakage.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional front view showing an embodiment of a cable supply device for reciprocating equipment according to the present invention;
The figure is a sectional plan view taken along the line xx in FIG. 1. 3a, 3b... truncated conical fixed body.

Claims (1)

[Claims] 11 stages or multiple stages of truncated conical fixed bodies 3a, 3b are provided, and cables for power or control signals to reciprocating equipment, or hoses for transferring fluids such as compressed air, gas, oil, etc., are provided as described above. Cables for reciprocating equipment characterized by being stacked in a spiral shape on the truncated conical fixed bodies 3a and 3b of each stage, and having their central end connected to the rotary body 11 and the other end connected to the fixed body 2. feeding device.