WO2004085302A2

WO2004085302A2 - Device for unwinding and winding wire coils, cable coils, cable reels, and similar unwinding materials

Info

Publication number: WO2004085302A2
Application number: PCT/EP2004/003011
Authority: WO
Inventors: Manfred Kollek; André Schmidt
Original assignee: Manfred Kollek; Schmidt Andre
Priority date: 2003-03-28
Filing date: 2004-03-22
Publication date: 2004-10-07
Also published as: DE20305131U1; WO2004085302A3

Abstract

The invention relates to a device for unwinding and winding wire coils, cable coils, cable reels, and similar materials used for installation purposes. Said device comprises two horizontally aligned disks (1, 2) which are vertically disposed on top of each other so as to have symmetrical axes and are mounted on antifriction bearings (3) that are placed therebetween such that the top disk (1) is rotatable relative to the bottom disk (2). An angle (a) that is formed between the pins of the antifriction bearings and the radial line of the disks is not 0°. Alternatively, the antifriction bearings run on a wavy track having alternating peaks and valleys. The inventive device allows for substantially better stability in the operating position while creating a compact, easily transportable flat design having a low height. The device generates a braking power that acts counter to the direction of traction, is proportionate to the weight of the unwinding material, and results in very little after-running of the device and thus also of the unwinding material during stopping, effectively preventing uncontrolled depositing of layers of the unwinding material on the floor.

Description

Device for unrolling and unrolling cable rings, cable rings, cable drums and similar unrolled goods

The invention relates to a device for unwinding and rolling up cable rings, cable rings, cable drums and the like. For use in the installation area. Such devices have been known for a long time. What they have in common is that they essentially consist of a stable foot section and a holder for the cable rings or cable drums. A disadvantage of the known devices is that, due to the different inner diameters and weights of cable rings and drums, they are only suitable for the rings or only for the drums, so that at least two devices are required. In addition, these devices are generally very bulky and can only be folded inadequately in a space-saving manner for transport, so that an inappropriately large loading space must be provided for their transport. A crucial disadvantage of all

Known cable unwinding and reeling devices, however, consist in the fact that they do not have the desired performance characteristics when used in practice. Since the full cable drums and rings are usually quite heavy, they generate considerable centrifugal forces in addition to the weight acting on the rotatable support during unwinding. The result of this is that the cable drums or rings continue to rotate unintentionally when the unwinding process is ended and only come to a standstill after further turns. The result of this is that a larger cable length than desired is unwound from the drum or from the cable ring, so that the cable or line hangs limply from the cable drum or ring and is usually even caught in the device. The next unwinding process is difficult or, in the worst case, impossible and requires an operator to correct it. With most devices currently in practical use, it is even necessary for the operator to take corrective action in order to wind the cable back and tighten it or to free it from the unwinding device. This requires unnecessarily valuable working time and, because of the necessary constant control, makes effective one-man operation of the device from a distance, as is desired in practice, difficult, if not impossible.

Another problem with the known unwinding and winding devices for cables is that the devices are not sufficiently stable and stable during unwinding, so that they tilt and thereby clamp or knot the cable, making further unwinding difficult or impossible , and in the worst case, the devices including the drum are knocked down. Intervention by the operator is also necessary here, which makes the cable installation more difficult and lengthens.

In order to prevent the cable unwinding device from running on when the cable pull is stopped, JP 2001171915 A proposes to mount a horizontally rotatable table above a horizontal fixed table on balls which are arranged in a guide arranged around the vertical axis of rotation of the table, so that their free movement is restricted. A braking force proportional to the weight of the cable drum is generated, which essentially prevents the uncontrolled turning of the cable drum. The specific technical means by which this braking force is generated is not disclosed. A disadvantage of this device, however, is that the table for receiving the cable bundle is mounted near its center, while the cable reel lying on it loads the table at its outer edges, so that when turning it can easily result in canting that generates excessive braking forces and thereby make the rotary movement stiff, so that considerable effort is required to turn. In addition, the receptacle for the cable reel is unstable due to the foldable arms and the cable can easily unwind from the roll and fall apart when placed on the table, since there is no external limitation on the table.

This device is therefore also unsuitable for practical use on construction sites and in need of improvement.

DE 85 08 976 U1 discloses a roll-off device for a rollable line, which is received by at least one rotatable holder, which is placed on a rotatable disk, the disk opposite another disk by wheels attached to the underside of the rotatable disk, which are on the top roll the lower disc, is rotatable, the wheels being attached to rotatable wheel holders. The rotatability of the wheels by means of the rotatable wheel holder serves the purpose of compensating for possible inaccuracies in fit. Since they cannot be determined, they will automatically align themselves in the running direction on the orbit due to the rotatable wheel holder during the rotating movement of the wheels on the lower disc, so that a targeted braking effect of the upper disc cannot be achieved. In addition, the arrangement of wheels running on the lower disk is disadvantageous, since under practical conditions of use of such rolling devices on construction sites and the like, dirt and contaminants of all kinds can collect on the lower disk and impair the running of the wheels. In particular, accumulating sand or other coarse particles down to small or medium-sized stones can severely impair the running of the wheels on the lower disc or even make it impossible. This means that this device is susceptible to malfunction and has a restless, uneven run, which has an unfavorable effect on the roll-off function.

The invention is therefore based on the object of a device for unwinding and rolling up of coils wound on rings or drums, such as. B. lines or cables develop that is compact and stable and has improved rolling and running properties.

The object is achieved according to the invention by a device with the characterizing features of claims 1 and 11.

Advantageous design features of the invention result from the subclaims.

The device according to the invention enables a substantially better stability in the position of use and is at the same time space-saving and easy to transport due to its flat design and low height. Since the device also works with the simplest mechanical means, its susceptibility to soiling, wear and the associated inoperability is kept to a minimum, so that it can withstand the harsh conditions prevailing in assembly practice. When the unrolled goods are unwound, a braking force acting counter to the direction of pull is generated in proportion to the weight of the unrolled goods, which, when the unwinding process is interrupted, causes only a very slight overrun of the device and thus the unrolled goods and thus prevents layers of the unrolled goods from being deposited on the floor unintentionally and in an uncontrolled manner and, if the unwinding process is continued again, the intervention of a worker is required, which would impair the effectiveness of the work process. With the unwinding device according to the invention, the intervention of an operator for eliminating faults is superfluous.

The side upper and lower edges of the upper disc prevent the cable from unintentionally unwinding from the cable drum or reel and falling and / or getting tangled or jammed between the discs.

The foldable, lockable brackets provide stable and secure storage for the cable rings and the cover plate ensures additional stability. When the cable ring is inserted, the attached cover plate enables the cable to be pulled upwards without the cable rollover occurring in known devices. The storage of the upper disc near the outer edge prevents tilting and tilting of the disc, so that smooth, smooth running of the disc is guaranteed even with large cable drum weights. At the same time, the device can be moved into the use position with one hand without additional tools. Thanks to its simple mechanical parts, it is also essentially wear-resistant and insensitive to dirt, moisture and contamination, and requires little maintenance.

The invention is explained in more detail below using an exemplary embodiment with reference to the drawings.

Fig. 1 shows a sectional view of a possible embodiment of the unwinding and winding device according to the invention with a cable ring arranged thereon.

FIG. 2 shows a view of the partially cut-out device from FIG. 1 with a cable drum arranged thereon.

Fig. 3 shows a plan view of the lower disc with three roller bearings.

Fig. 4 shows a plan view of the upper disc with the brackets folded down.

FIG. 1 shows an embodiment of the present invention in the use position with parts broken away in the region of a roller bearing 3, which in this case is a ball bearing. The device according to the invention consists of a fixed lower disc 2, which is fixed on feet 4 on the floor or another surface. Rolling bearings 3 are arranged on the top of the disk 2 near the outer edge, preferably an odd number, such as three rolling bearings in the present example (see FIG. 3). The number of rolling bearings depends, among other things, on the weight of the unrolled goods. For weights up to approx. 190 kg, seven roller bearings 3, for example, have proven to be advantageous and sufficient. The roller bearings 3 are preferably arranged on a concentric circular line near the outer edge of the disc 2 at substantially uniform intervals. The bearing axes of the rolling bearings 3 are in their axial alignment from the radial line of the Circular disks arranged so as to deviate by an angle a (see FIG. 3) in such a way that a braking force is generated which acts against the pulling direction of a cable to be unwound. This means that the roller bearings are set at an angle or rotated differently from the radial line, so that the angle a formed between the bearing axes of the roller bearings 3 and the radial line of the circular disk is not equal to 0 °. The braking force can be adjusted by differently aligning the roller bearings 3. The roller bearings 3 are preferably adjustable in order to set different angles a according to different requirements.

In order to prevent dirt and the like from penetrating into the roller bearings, encapsulated deep groove ball bearings are preferably used. Such ball bearings are known and commercially available. However, other roller bearings are also possible, such as roller bearings. Small ball bearings are preferably used in relation to the running length of the disk, with a disk circumference of approximately 1.60 m, for example ball bearings with a diameter of approximately 20-22 mm. This results in a multiple revolution of the ball bearing, for. B. 60 - 70 revolutions, whereby considerable energy is converted / destroyed in the ball bearings themselves, that is, a higher braking energy is generated.

Alternatively or additionally, instead of the angularly arranged roller bearings 3, a corrugated raceway with alternating mountains and valleys can also be provided for the roller bearings in order to generate the braking force.

At a horizontal distance above the first, fixed disc 2, a second disc 1 is rotatably arranged, which runs on the roller bearings 3 and is connected to the first disc 2 in a common vertical axis, preferably by a pin 7, which at the same time over the surface of the second Disc 1 protrudes and serves to center cable drums arranged on disc 1 (see also FIG. 2). In a preferred embodiment, a roller bearing (not shown) is also arranged instead of the pin 7 in order to produce a smooth run and to achieve a horizontal compensation during the run. For the rotational movement of the upper rotatable disk 1, the braking force exerted by the angle of attack of the roller bearings 3 must be overcome. The result of this is that when the rolling process is stopped or interrupted, the upper disk 1 with the one arranged thereon Cable drum 8 or the cable ring 6 arranged thereon only runs slightly because the force for overcoming the braking force is missing.

As a result of the braking effect, the roller bearings heat up to approximately 70 ° C., so that the upper disc running on the roller bearings 3 is subject to relatively strong wear and tear. Therefore, the disks 1, 2 are preferably made of high quality plastic with good abrasion resistance to prevent the formation of raceways or grooves and to achieve smooth, smooth and quiet running of the device. A suitable material has proven to be polyamide, preferably PA6. However, other suitable materials can also be used. The lower fixed disc does not have to be made of the same high quality material, but can be made of any other suitable material.

To accommodate cable rings, the device according to the invention also has foldable brackets 5 which can be locked in the upright vertical position. The cable ring is preferably locked by means of a cover disk 9 provided with corresponding elongated holes for the passage of the stirrups 5, which at the same time prevents the cable from being lifted upwards beyond the stirrups. However, other detents can also be provided, such as. B. hooks and eyes or snaps on the disc 9. The cover 9 may also have fold-out bracket (like the upper disc 1). In this case, the unfolded brackets of the cover plate 9 are plugged together with the unfolded brackets 5 of the upper pane 1 in a suitable manner.

In an advantageous embodiment of the invention, the washer 1 is provided on its outer edge with upwardly and downwardly extending edges which prevent the cable from slipping off the washer 1 and jamming of the cable between the washers 1 and 2. As can be seen in FIG. 1, the upper rotatable disk 1 has a slightly larger diameter than the lower disk 2, so that the edge projecting downward from the disk 1 reaches almost to the bottom and thus the space between the disks 1 and 2 also encloses during the rotation of the disc 1 and thus prevents the cable from penetrating into the intermediate space and represents additional protection for the roller bearings 3. In Figure 2, a cable drum 8 is arranged on the disc 1 instead of the cable ring 6 in Figure 1. To accommodate the cable drum 8, the foldable brackets 5 are folded down onto the pane 1 so that they lie flat on the upper surface of the pane 1. This can best be seen in FIG. 4. This position of the folding brackets 5 is also the transport position of the brackets, so that the device can be transported from one place of use to another in a very compact and flat form. Due to the braking effect exerted by the arrangement of the roller bearings 3 on the rotational movement of the upper disc 1, this is simultaneously secured for transport, so that unwanted rotary movements of the upper disc 1 during transport occur, if at all, only to a very small extent, even with it lying cable drum or cable ring.

In Figure 2, the pin 7 for receiving and centering the cable drum can be clearly seen. The pin 7 is also the vertical axis of rotation for the upper disc 1 and connects the lower and upper discs 2 and 1 with each other.

Claims

Patent claims

1.Device for unwinding and rolling up cable rings, cable rings, cable drums and similar unwinding goods, in which two horizontally aligned disks (1; 2) are arranged vertically and axially symmetrically one above the other and the upper disk (1) in relation to the lower disk (2) Is rotatable, characterized in that roller bearings (3) are mounted on the lower disc (2), on which the upper disc (1) rolls, one between the bearing axes of the roller bearings (3) and the radial line of the discs (1; 2) angle formed (σ) is not equal to 0 °.

2. Device according to claim 1, characterized in that the rolling bearings (3) are arranged adjustable in the angle ().

3. Device according to claim 1 or 2, characterized in that the rolling bearings (3) are arranged on a concentric line near the outer edge of the discs (1; 2).

4. Device according to one or more of the preceding claims, characterized in that the rolling bearings (3) are arranged on the concentric line evenly spaced.

5. The device according to one or more of the preceding claims, characterized in that an odd number of the rolling bearings (3) is arranged.

6. Device according to one or more of the preceding claims, characterized in that the upper disc (1) is provided with an outer edge extending downwards and upwards from the lower and upper surface.

7. The device according to one or more of the preceding claims, characterized in that on the upper disc (1) foldable bracket (5) for receiving a cable ring (6) are provided, which can be locked in a vertical position.

8. The device according to claim 7, characterized in that the locking is a cover plate (9) with elongated holes for receiving the bracket (5).

9. The device according to claim 7, characterized in that the cover plate has fold-out brackets which can be plugged together with the folded-out brackets (5) of the upper disk (1) and form the locking means.

10. The device according to one or more of the preceding claims, characterized in that on the upper disc (1) has a central pin (7) for

Centering a cable drum (8) is provided.

11. The device according to one or more of the preceding claims, characterized in that the disc (1) consists of wear-resistant plastic.

12. The device according to claim 11, characterized in that the disc (1) consists of polyamide PA 6.

13. The device according to one or more of the preceding claims, characterized in that the upper disc is provided centrally with a horizontal roller bearing.

14. Device for unrolling and unrolling cable rings, cable rings, cable drums and similar unwinding goods, in which two horizontally aligned disks (1; 2) are arranged vertically and axially symmetrically one above the other and the upper disk (1) with respect to the lower disk (2) is rotatable, characterized in that roller bearings (3) are mounted on the lower disk (2), on which the upper disk (1) rolls, the track being a corrugated track with alternating mountains and valleys.