RU182066U1 - REINFORCED UNWINDING CABLE REEL - Google Patents

Abstract

The utility model relates to the construction of inertialess coils with an optical or electric cable, designed for remote control of moving objects in water, air and airless space, as well as for transferring information between them.

The problem solved by the claimed utility model is the creation of a relatively simple design of the inertialess coil without gluing the cable turns, which will minimize the overall dimensions of the blocks intended for its placement, ensuring reliable inertia-free unwinding of the optical cable (if necessary, also electrical and combined) without deterioration its transmission characteristics.

The technical result is achieved by the fact that (Fig. 2), the shaft of the coil is hollow, the front cheek is a body of revolution and contains a guide region made in the form of a "funnel" and located coaxially with the shaft of the coil, the end of the cable designed to be connected with the movable relative to the coil object, introduced through the guide region of the front cheek into the shaft of the coil and removed from it through an opening in the supporting cheek, located coaxially with the shaft, the minimum radius of curvature of the outer profile of the front cheek (R1) of the coil, as well as For the guide funnel (R2) is at least 20 cable diameters, the surface of the front cheek of the coil in contact with the unwinding cable is processed in such a way that the minimum coefficient of friction between the cheek of the coil and the cable is ensured, the winding of the coil is “full” - along the entire height of the cheek of the coil in contact with the unwinding cable.

Description

The utility model relates to the construction of inertialess coils with an optical or electric cable, designed for remote control of moving objects in water, air and airless space, as well as for transferring information between them.

From the prior art, frame structures of inertialess coils with an ordinary cable winding (coil to coil) and with a device providing a specified cable tension when it is unwound are known (US Pat. No. 4,241,761, F42B 13/56, publ. 1981 [1]; RF patent RU 2118792, C1 F42B 15/04, publ. 1998 [2]), as well as with gluing cable turns (RF patent RU 2334941, C1 F42B 15/04, F41G 7/32, publ. 2008 [3] )

Gluing of coils or a device for creating a given tension is intended to ensure stable unwinding of the cable (without tangling) and to prevent the coils from falling off during vibration and shock (acceleration) of the coil.

The negative consequences of technical solutions related to the bonding of winding turns are obvious. This, in particular, is the complication and appreciation of the technological process of winding the cable to the reel (heating is required; careful observance of the technological regime - temperature, speed, humidity, etc.); low winding speed - tens of hours for winding 1 km of cable).

For large cable lengths (tens of kilometers), which is currently an urgent task for the relevant types of equipment, the task inevitably arises of minimizing the cable diameter (to ensure that the coil is placed in the specified dimensions of its carrier). A significant increase in cable tension and a decrease in its bending radius at the point of tearing off (peeling) from the coil in the case of gluing turns causes additional (excessive) requirements for the cable to be presented - according to the parameters of the outer sheath, the permissible bending radius, and resistance to tensile stress, which prevents minimizing the diameter of the used cable: This is especially true for optical cables (OK), for which a decrease in bending radius and an increase in tension is critical not only from the point of optical strength fiber, but also in terms of cable transfer characteristics and reliability.

The disadvantage (limitation of the area of use) of structures equipped with devices that provide the specified cable tension during unwinding [1, 2] - only to ensure its stable unwinding - is the creation of additional cable tension, undesirable and / or unacceptable from the point of view of mechanical strength and transmission characteristics of the optical cable, especially taking into account the influence of environmental loads (air, water) on the cable when unwinding large cable lengths.

Closest to the utility model are designs that provide inertialess unwinding of the cable without the use of bonding coils or devices that provide a given cable tension when unwinding (the first options for solving problems of telecontrol rockets by cable), in particular, the design of the tail section of the guided rocket 9M116 complex "Metis" [4]).

This design is a frame located on the shell housing of the projectile’s starting engine, there is a parallel winding (coil to coil) of an electric cable (for the definition of parallel winding, see footnote 1 on page 1-4 of the description), one end of which is from the inside winding layer - connected to the control compartment ("fixed part"), the second end - from the outer winding layer - connected to the projectile control unit ("moving part").

The disadvantages of such designs:

- large “expansion” of the cable when unwinding in objects with limited free space (Fig. 1), which, in the presence of closely located mechanisms or objects (for example, in units with limited overall dimensions), can lead to cable tangling and breakage, as well as an increase resistance to unwinding (cable tension) when unwinding in water or air; the specified disadvantage also applies to structures with gluing cable turns [3];

- insufficient reliability of the unwinding of the cable - its entanglement at the "wrong" gathering of turns during vibration and acceleration of the carrier.

The problem solved by the claimed utility model is the creation of a relatively simple design of the inertialess coil, which will minimize the overall dimensions of the blocks designed for its placement, while ensuring reliable inertia-free unwinding of the optical cable (if necessary, also electrical and combined) without compromising its transmission characteristics.

In FIG. 1-2 are diagrams explaining the essence of the utility model and individual aspects of the problem.

In FIG. 1 shows a cable unwinding scheme for known designs of inertialess coils without devices providing additional cable tension (in particular, [4]), illustrating the "expansion" of the cable during unwinding.

In FIG. 2 shows a schematic diagram of the design of the inertialess coil according to the claimed utility model.

In FIG. 2 the following notation is used:

1 - cable winding;

2 - hollow shaft of the coil;

3 - front cheek of the coil;

4 - the guide region of the front cheek in the form of a "funnel";

5 - supporting cheek of the coil;

6 - outer casing;

7 - the end of the cable, intended for connection with a moving object relative to the coil.

In the proposed implementation of the coil (Fig. 2), the technical result is achieved by the fact that the shaft 2 of the coil is hollow, the front cheek 3 is a body of revolution and contains a guide region 4, made in the form of a "funnel" and located coaxially with the shaft of the coil, the end of the cable 7 intended for connection with an object moving relative to the coil is introduced through the guide region of the front cheek into the shaft of the coil and removed from it through an opening in the supporting cheek 5 located coaxially with the shaft, the minimum radius of curvature of the external profile I of the front cheek (R1) of the coil, as well as the profile of the guide funnel (R2), is at least 20 cable diameters, the surface of the front cheek of the coil in contact with the unwinding cable is processed in such a way that a minimum coefficient of friction between the cheek of the coil and the cable is ensured, and the coil is wound is "full" - over the entire height of the cheeks of the coil in contact with the unwinding cable.

The cable winding on the reel in this embodiment can be either parallel (ordinary) or cross 1. ¹ ( ¹ Cross winding is a winding in which the layers of the thread are mainly parallel to the surface of the thread carrier and the turns of the next two layers are crossed.

Parallel winding (ordinary) - cross winding with a constant step not exceeding one or two diameters of the thread.

Definitions are given in accordance with GOST 28994-91 (ISO 5239-80) Textile machines and accessories. Winding threads. Terms and Definitions.)

The coil may be further provided with an external protective casing 6.

The stability of the unwinding of the cable (without tangling) in the absence of gluing of coils, reducing the “expansion” of the cable and minimizing the overall dimensions of the blocks necessary to accommodate the coil is ensured by the fact that in this design the unwinding (exit) of the cable from the coil is carried out through the hollow shaft of the coil opposite to the movement of the gathering of turns (Fig. 2), that is, a sequential "rotational" unwinding of the cable and its straightening inside the shaft of the coil are performed.

The minimum radius of curvature of the profile of the front cheek of the coil and its guide region (funnel) - 20 cable diameters - guarantees the absence of OK bends with an unacceptable radius when winding it.

The minimum coefficient of friction between the cheek of the coil and the cable eliminates unwanted cable tension during unwinding.

The cable’s full filling of the space between the cheeks of the coil is necessary to eliminate excessive tensile forces in the cable, which has low bending stiffness, at the beginning of unwinding (during the initial jerk).

The specified implementation of the coil provide a relatively simple and reliable solution to the problem.

The possibility of implementing this design and the stable unwinding of the optical cable is confirmed experimentally.

Inertialess coils were made for 5 and 20 km of optical microcable (OMK) with a diameter of 0.9 mm, for 80 m of optical cable-cable (OCT) with a diameter of 3.5 mm for placement on an underwater carrier, as well as for 500 m of combined optical electric cable (CC) with a diameter of 5 mm - for placement on a ground or air carrier;

Cable winding was carried out on standard cable equipment with a slight upgrade. For cases of unwinding the cable in air, lubrication with PMS silicone fluid was used. It is established that the proposed design of coils with a cable does not lead to an increase in the attenuation of the signal in the optical cable. The cable was unwound on a specially designed unwinding stand in air and in water at a speed of up to 30 m / s according to the scheme of FIG. 2. During the testing process, it was confirmed that the proposed solution provides stable unwinding and preservation of the cable transmission characteristics at the required level.

In the design of coils, scarce products and materials are not used. The source materials are issued in the Russian Federation according to the permanent documentation. The manufacturing technology of coils is at the level of manufacturing technology of similar products.

Information sources

1. US patent N 4271761, F42B 13/56, publ. 1981

2. RF patent RU 2118792, C1 F42B 15/04, publ. 1998 year

3. RF patent RU 2334941, C1 F42B 15/04, F41G 7/32. ruble 2008 year

4. Guided missile 9M116. Technical description and instruction manual. M .: Military publishing house, 1980

Claims (2)

1. A coil for inertialess unwinding of a cable, comprising a shaft, a front and a support cheek, between which there is a cable wound on the shaft, characterized in that the coil shaft is hollow, the front cheek is a body of revolution and contains a guide region made in the form of a “funnel” and located coaxially with the shaft of the coil, the end of the cable, designed to be connected with an object moving relative to the coil, is brought through the guide region of the front cheek into the shaft of the coil and removed from it through an opening in the support the axle, located coaxially with the shaft, the minimum radius of curvature of the outer profile of the front cheek of the coil, as well as the profile of the guide funnel is at least 20 cable diameters, the surface of the front cheek of the coil in contact with the unwinding cable is processed so that a minimum coefficient of friction between the cheek of the coil is ensured and cable, the coil winding is “full” - over the entire height of the cheek of the coil in contact with the unwinding cable. 2. The coil according to claim 1, characterized in that it is additionally equipped with an external protective casing.

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