SU1436163A1 - Cable drum - Google Patents

Abstract

This invention relates to electrical engineering and can be used as removable drives. The goal is to reduce the likelihood of damage to the conductor while simplifying. Cable: the drum consists of two flanges I, rigidly connected to the neck 2, on the cylindrical surface of which the groove 3 is made and the longitudinal groove A, In the groove 4 there is a rod 7 having a triangular notch 12 for the fixed conductor 13 and an opening 9 to accommodate the spring 10 and the ball 11. When refueling the drum, the end of the fixed conductor 13 is placed in a triangular notch 12 and then pressed onto the rounded surface 14 of the rod 7, as a result of which the rod rotates around axis 6, the conductor 13 enters the groove 3, and the rod 7 enters in groove 4 up It is time, with the expense arising from the action pru-, zhiny 10 fulvus friction rod 7 moves into the locked position, 6 yl.

Description

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The invention relates to electrical engineering, in particular to cable drums, and can be used as removable storage devices with fixing and automatic release of the end of the conductor during technological accumulation and subsequent consumption of fiber optic wiring harnesses5 cables,

The purpose of the invention is to reduce the likelihood of damage to the conductor while simplifying at the same time. I Fig. 1 shows the details of the drum, axonometry. I in Fig. 2 - the drum is in the previous position (fixing the wire scale, - section on f-1hch 3 - the same, in the position of fixing the ion, conductor, fig, 4 - bar - d | nppi winding fixed 1 | FOBodnika transverse cut,; on, fig 5 - then HBj after unwinding and;; fig. 6 - drum parts from 1YAGA structural materials {wood, plastics), axonometric variant fulfillment.

I The cable drum consists of two () lanzav 1, hsestko connected to the neck OY 2 “Neck 2 has a predominantly cylindrical shape with a radius. jiSBtaiiM or a few large minimum bend radius of the conductor On the cylindrical surface of the neck 2, an eccentric groove 3 is made adjacent to the end, around 1/3 of the perimeter of the sheyksh is about, and a longitudinal groove in the area of its maxi- The side walls of the groove 4 have an opening 5 under the OCIB 65 before it is assigned to fasten the rod 7, in the side faces of which there is an oval hole 8 for the b axis. At the end of the rod 7 facing the blank wall of the groove 4e there is a hole 9 for the side darling s 10 and ball P 'B- counterfield shom.tortse rod 7, facing to the flange 1 is formed in a triangular cutout 12 for latching wire 13. The kick-facing surface of the conductor to the take-up - 14 rod 7 is flush with the cylindrical surface of the neck 2,

The geometrical dimensions of the eccentric groove 3 are selected within

, 5 d; ,, 2 d.

where 1 is the groove width; d is the diameter of the conductor; h - maximum groove depth

The distance from the end of the neck 2 to the hole 5 and the vertical displacement of the spring 10 are related by the relation

,,

H is the vertical displacement of the spring 10 relative to the axis of rotation 6 of the rod 7;

L is the distance. from the end of the neck 2 (the inner surface of the flange 1) to the axis 6;

k - coefficient of friction of the material of the conductor on the flange of the drum.

The operating force of the spring 10 is selected from the condition

P 2

2k

where P is the operating force of the spring;

G is the tension force of the conductor.

The drum works as follows.

In the absence of a conductor, the rod 7 under the influence of the spring 10 is always turned around the axis 6 and the triangular notch 12 is open. When refilling the drum, the end of the fixed conductor 13 is placed in the triangular cutout 12, and then the rounded surface I4 of the rod 7 is pressed, the rod turning around the axis 6, and the triangular cutout 12 facing the inner surface of the drum flange 1, the conductor 13 falls into the groove 3, and the rod 7 enters the groove 4 until it stops; the operating force of the spring 10 ensures the conductor is pressed, due to the frictional forces that arise, the rod moves to the fixed position and remains there after removal of the external force 4. FIG. 3 shows a section of the assembly in the position of fixing the end of the conductor; Pressing the ball 11 through the blind end, the groove 4, the spring 10 tends to turn the rod 7 clockwise and develops the moment, at the same time the friction force P, - P, strains hold the rod 7 and develops a brake - the moment of the opposite action I. that same thing, M ..

When winding, the tension of the conductor acts in the tangential direction, as shown in Fig. 4, its projection onto the plane of rotation of the rod is zero, as a result of which it does not affect the equilibrium condition

M,

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or

L-k. P rn

When H $ L- k ,, the end of the conductor is securely fixed in the drum. The drum is rotated in the direction indicated by the arrow, the first turn of the winding-up conductor is placed in the eccentric recess of the drum neck, and the subsequent turns of the coil are the conventional round winding. At the same time, the entire surface of the drum, onto which the winding-up conductor is placed, has a smooth-cylindrical shape without protrusions that cause the conductor to deteriorate. After winding up the conductor from the drum, there is a natural change in the direction of the force on

Tension Gg, acting in the plane of rotation of the rod and creating an additional moment M Gg L, folding with the moment MO developed by the spring. When the balance is violated, there is a rotation of the SCHOTOK

clockwise and automatic release of the end of the conductor.

In the case of the manufacture of a drum from soft construction materials, for example wood, plastics, for

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To increase the service life and ease of assembly, the rod 7 can be smiled in the cavity of the l-shaped metal bracket I5, which is fixed in the groove 4 of the neck 2.

Placing the spring-loaded stem in the cervical longitudinal groove in the zone of the greatest width of the drum grooves and using the cutout on the stem section facing the tongue as a locking element, reduces the axial dimensions of the drum by eliminating the radii of curvature of the exposed conductor compared to known devices. does not increase its safety and, at the expense of simplification, reduce the cost of construction,

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Claims (1)

Invention Formula Cable drum containing fpaktsy, neck with a groove made directly at the flange, designed for. laying the conductor, and a hinged spring-loaded rod, characterized in that, in order to reduce the likelihood of damage to the conductor in case of a modern simplification, a longitudinal groove is made in the neck in the groove area, in which the rod is placed, the conductor has a triangular cutout on the end face facing the flange and a blind longitudinal hole, the open side faces the end surface of the groove of the neck, in which the spring is installed. Ftz Fi%. 15 (Rig.6