Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1981-12-17
1984-05-08
Jillions, John M.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
242 865R, 2541343R, B65H 7540
Patent
active
044470134
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a method for extracting, reeling up, pulling in, etc., of a heavy cable or other similar long flexible object, for example a telephone cable or electric power cable, hose etc. In the new method a frame is used which can be set up on a vehicle and which comprises a base unit made up of a number of beams, and two bearing brackets projecting upwards from the long sides of the base unit. A drum for the cable or similar, capable of rotating in the bearing brackets on the frame, and a drive gear for the drum, comprising a motor unit and a transmission component are provided, for example in the form of a drive chain, drive belt or equivalent component. The invention also relates to an arrangement to perform the method.
DESCRIPTION OF THE PRIOR ART
The extraction, reeling-up and pulling-in of cables are basically well-known operations in the relevant context. On extracting a cable in ducts, for example, it has previously been proposed to use a so-called cable stocking, which is applied to the end of the cable down in the cable pit in question. After the stocking has been secured to the end of the cable, the cable is drawn free with the aid of a powered vehicle to which the stocking is connected by means of a draw wire. After a small displacement of the cable, the cable stocking is moved a short distance, and a further small lengthwise displacement is achieved by means of the vehicle. The stocking is then moved further back on the cable, followed by a further small displacement, and so on until the entire cable has been withdrawn from the duct by the said small stepwise displacements of the cable drum and small forward and backward movements of the vehicle used. As the cable is gradually pulled out, it is gradually wound manually onto the relatively large cable drum. In this context it must be realized that the cable in question, which in the case of a telephone cable may be in the form of a lead-sheathed cable with a diameter of 120 mm, for example, is often extremely long.
Other arrangements for the purpose stated above are previously known through U.S. Pat. Nos. 4,003,456, and 4,194,702.
DESCRIPTION OF THE PRESENT INVENTION
TECHNICAL PROBLEMS
Personnel have to work close to the cable and are therefore exposed to the risks of inhaling lead dust. In addition, the known gradual manual reeling-up method is both hazardous and arduous which, in addition to the environmental problems with lead dust already mentioned, lead to unsuitable working positions in which the risk of injury by crushing, back injury and other accident risks are evident.
SOLUTION
The main purpose of the present invention is to create a working method and arrangement for this which solves among other things the range of problems outlined above. What may be regarded as chiefly characterizing the new method is that a pulling device is connected to a core of the cable or similar and to a pull-free mechanism fixed to the frame. The pull-free mechanism is activated for a small lengthwise displacement of the cable or similar and thus for pulling the cable free from a duct, attachment etc. After pulling free the pulling device is disconnected and the core is pulled up towards and anchored to the drum. The motor unit is activated to turn the drum and the subsequent major part of the lengthwise displacement of the cable or similar is achieved by direct winding on to the drum.
Accordingly the new arrangement according to the invention can be chiefly regarded as being characterized in that there is secured to the frame used in the invention a pull-free mechanism to which a core of the cable or similar can be connected via a pulling device. The pull-free mechanism is arranged to transfer a small longitudinal motion to the cable or similar via the pulling device and thus causes the cable to be pulled free in a duct, suspension system, etc. The frame, motor unit and drum are so arranged that after the pulling-free of the cable or similar and the anchoring of the core to the drum, it is possible to win
REFERENCES:
patent: 1939796 (1933-12-01), Spowart
patent: 2181392 (1939-11-01), Chatham
patent: 2629768 (1953-02-01), Beil
patent: 3070324 (1962-12-01), Bryman
patent: 3240413 (1966-03-01), Young et al.
patent: 3244292 (1966-04-01), Elliott
patent: 4003456 (1977-01-01), Cullen et al.
patent: 4228990 (1980-10-01), Horvath
Andersson Bengt
Carlsson Rune
Sandered Bror
Jillions John M.
MEAB Mobile Equipment AB
LandOfFree
Method and arrangement on extracting, reeling up, pulling in, et does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and arrangement on extracting, reeling up, pulling in, et, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and arrangement on extracting, reeling up, pulling in, et will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1598414