JPS6125297Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a cable extension roller that can be attached to any arbitrary location such as a utility pole or armrest.

Conventionally, this type of cable extension roller has been used by fixing a cross-shaped four-sided roller to a cross arm protruding from a telephone pole, but it has the disadvantage that support and fixation are limited to the cross arm. Therefore, a wire extension roller was developed that can be attached directly to utility poles or to any location, such as an armrest, as needed. On the other hand, these wire extension rollers have rollers along each side of a gate-shaped or U-shaped frame, and a door roller that can be opened and closed is passed through the opening of the frame. Due to the increase in the number of rollers, larger rollers with larger inner diameters between the four-sided rollers are required. However, if the conventional wire drawing roller is simply made larger, it will be heavier and may pose a problem in installation work and handling on site.

This idea was devised in consideration of these points, and it can be attached to any location such as a utility pole or cross arm, and when extending the cable outside the low voltage rack, the four-sided roller part can be extended, and the cable can be attached to the rising point of the cable. When used in the field, the four-sided roller section can be raised to bring it closer to the utility pole, and the two rollers installed on the four-sided roller section are positioned in the direction in which the load is applied, increasing the curvature of the electric wire or cable to pass it through, preventing damage. It is an object of the present invention to provide a cable stretching roller that can be used in various applications or locations such as an inner curve, an outer curve, an introduction roller, a pull-down roller, etc.

An embodiment of this invention will be described below with reference to the drawings. Reference numeral 1 denotes two substantially vertical plate-shaped side frames 1 having upper and lower bent sides 1a, and these two side frames 1 are spaced apart from each other at a constant interval. The bent sides 1a are positioned parallel to each other, with the bent sides 1a facing each other. 2 are shafts fixed to the upper and lower parts of the side frames 1 by penetrating both sides thereof respectively; 3 are nuts screwed onto the outer periphery of each shaft 2 on both sides of each side frame 1; By tightening each shaft 2
are fixed to each side frame 1. 4 is an opening/closing nut screwed onto the outside of one side frame 1 of one of the shafts 2 of the nuts 3 and has a knurled outer periphery; 5 is an opening/closing nut screwed onto the outer periphery of each shaft 2 between the two side frames 1; A rotatably provided roller, 6 a shaft passed between the upper and lower bent sides 1a of each side frame 1, 7 a rotatably provided roller on the outer periphery of each of these shafts 6, and these rollers 7 are It is located on both sides in front of the roller 5, and the rollers 7 and 5 form a cross-shaped four-sided roller. 8 is one side frame 1 mentioned above.
, a shaft passed between the bent sides 1a at the rear (upper side in FIG. 1) of the roller 5; 9 is a roller rotatably provided on the outer periphery of the shaft 8; 10 is a rear edge or front and back edge of the side frame 1; The curved edges 11, which are respectively bent outward, are notched grooves integrally cut from the through hole to the rear edge of the side frame 1 through which the shaft 2 having the opening/closing nut 4 passes. Reference numeral 12 denotes a rotating frame having a substantially U-shaped cross section, whose bottom plate is in contact with and fixed to the side frame 1 having the rollers 7 and 9, and the shaft 2 passes through one side of the bottom plate of the rotating frame 12. The nut 3 is screwed onto the outer end of the shaft 2. 1
3 is a bolt passing through the other side of the bottom plate of this rotating frame 12 and the side frame 1 and having a nut 14 screwed thereon; 15 is a square tube with one end thereof inserted between both side plates of the rotating frame 12; 16 is a bolt shaft passing through both side plates of the rotating frame 12 and both sides of the arm body 15, 17 is a nut screwed onto the tip of this bolt shaft 16, and 18 and 18' are the above-mentioned bolt shafts. Holes 19 are formed in both side plates of the dynamic frame 12, respectively, upwardly and laterally with the bolt shaft 16 as the center.
20 is a bolt that passes through one of the holes 18' and corresponding holes (not shown) made in both side plates of the arm body 15; 20 is a nut screwed onto the tip of this bolt 19; 21 The other end of the arm body 15 is fixed in the center of the groove of the arm body 15, and the column 22 has a channel groove type cross section and is connected to the arm body 15 in a T-shape.
2 are fixed to the upper and lower end surfaces of the support columns 2, respectively, and have outer edges protruding from the support columns 21;
A protruding plate protruding from the front and rear sides in the middle of 1; 25 is a chain fastener provided at the tip of one protruding plate 24;
6 is a chain whose one end is connected to the chain fastener 25, 27 is a chain holder provided at the tip of the other projecting plate 24, and 28 is a through hole bored in the upper plate of the arm body 15.

This device has the above structure, and in order to attach this device to a utility pole, the outer ends of the upper and lower seat plates 22 are brought into contact with the outer periphery 29 of the utility pole as shown in FIG.
Connect the free end of 6 to the chain support 27 and tighten the chain 26 with the chain tightener 25.
This invention is fixed to the outer periphery 29 of a telephone pole.
As a result, the seat plates 22 provided at the upper and lower ends of the support column 21
The four outer ends are brought into contact with the outer periphery 29 of the telephone pole, and this device is fixed very stably. When several low-voltage racks are installed on a utility pole, a single through bolt is passed between the racks as a common axis for the insulators of these racks, but this idea
9, even if the roller of this invention is installed between multiple racks, it can be fixed avoiding the above-mentioned through-bolts. Therefore, it can be installed closer to the low-pressure rack, and the roller of this invention can be installed between multiple racks. The cable 31 can be extended on the outside. In this case, the cable 30 passes through the rollers 7 and 9 of this invention, and the rollers 7 and 9 absorb the lateral load on the utility pole when the cable 30 is extended.
Receive it at Further, as shown in FIG. 5, the four-sided roller part can be bent at right angles to the support and fixation part while the support and fixation part supports and fixes the object as appropriate.
That is, when the bolt 19 and nut 20 are removed from the rotating frame 12 and both side plates of the arm body 15 in the state shown in FIG. The holes 18 on both side plates of the rotating frame 12 are in positions corresponding to the holes (not shown) on both side plates of the arm body 15,
The bolt 19 is passed through this hole, and the nut 20 is screwed onto the tip. In this way, the four-sided roller part can be bent at right angles to the supporting and fixing part. Therefore, by attaching this device to the rising point of the cable, the four-sided roller section can be raised to bring it closer to utility poles, etc., increasing its strength.Moreover, at the rising point of the cable, the load is applied downward to the four-sided roller section, but in this case, the cable 30
is received by the two wheels of rollers 7 and 9. In addition, when this invention is directly attached to a chain arm, etc., as shown in FIG. In the case of a thin cross arm 31' (the one indicated by the two-dot chain line), one side of the arm arm 31' may be brought into contact with the inner side of the convex notch 23. This invention can be installed very stably even in the case of

In addition, in order to insert the cable between the rollers 5 and 7 forming the four-sided roller section of this invention, loosen the opening/closing nut 4, remove one side of the side frame 1 from one shaft 2 through the notch groove 11, and The side frame 1 is rotated around the shaft 2 to open a space between one shaft 2 and one side of the side frame 1, and the cable is inserted from this point. Then, reverse the side frame 1 again, fit the cutout groove 11 of the side frame 1 onto the outer periphery of the shaft 2, and tighten the opening/closing nut 4.
It tightens the

In this way, when this device is attached to each utility pole and the cable is passed through the device, the position of the four-sided roller portion can be changed with respect to the supporting and fixing portion, and the outer circumference 29 of the utility pole, armrest 31, or It can be supported and fixed at any location such as 31'. Moreover, as mentioned above, since the position of the four-sided roller part can be changed with respect to the supporting and fixed part, the rollers 7 and 9, that is, the two-wheeled rollers, can be positioned on the four-sided roller part in the direction of the load applied when the cable is passed through. Therefore, the curvature of the cable can be maintained to a large extent, and the cable does not hit the frame, causing no damage to the cable. Therefore, it can be used at inner curves and outer curves of utility poles, and at cable pull-up and pull-down locations, regardless of the installation location or use.

Moreover, in the above embodiment, each shaft 2 is tightened and fixed to two side frames 1 by a nut 3 and an opening/closing nut 4, resulting in a quadrilateral rigid frame structure. Therefore, when a load is applied to one roller 5, the load is applied to each of the four sides, and bending stress acts on the four sides. Therefore, it has sufficient strength to withstand loads even without the gate-shaped or U-shaped frame of the conventional ones. As described above, since this invention eliminates the conventional frame, it is lighter and requires less material than the conventional one in which the inner diameters between the four-sided rollers are the same. Therefore, even if it is a large wire drawing roller with a large inner diameter between the four-sided rollers, the weight does not increase, and it is convenient for workers to handle on site. In addition, in the case of conventional four-sided rollers, there was a risk that the cable would come into contact with the frame and damage the cable when passing the cable through it at a steep angle, but with this design there is no frame along the roller 5, so the cable can touch the frame. contact,
There is no risk of damaging the cable.

6 and 7 show another embodiment of this invention, in which a pin 19' connected to the bolt shaft 16 by a chain is attached to the rotating frame 12 in place of the bolt 19 and nut 20 of the above embodiment. A round bar 24' is inserted through holes (not shown) in both side plates of the arm body 15, and instead of the projecting plate 24 of the support column 21.
However, these have the same effects as the above embodiments. Note that 32 in FIG. 6 is a collar provided on the outer periphery of the bolt shaft 16 and the pin 19', respectively. Further, in the embodiment described above, this invention is tightened by the chain 26, but it is of course possible to wrap and attach other suitable parts to the outer periphery of the telephone pole, armrests, etc. in place of this. Further, a large number of holes 18 are provided on both side plates of the rotating frame 12 on a concentric circle centered on the bolt shaft 16, and a bolt or pin 19 is inserted into one of these holes and fixed.
The four-sided roller part can also be placed in various positions relative to the support and fixing part.

As described above, this device can be attached to any location such as the outer periphery of a utility pole, a cross arm, etc., and the four-sided roller part can be bent with respect to the supporting and fixed part. By positioning the two parallel rollers of the four-sided roller section, the cable can be supported by these rollers, and therefore the cable can be passed through with a large curvature without touching the frame and causing any damage to the cable. Never. Therefore, it can be used in various places or applications.

[Brief explanation of the drawing]

The figures show an embodiment of this invention, in which Fig. 1 is a partially cutaway plan view, Fig. 2 is a front view of the same, Fig. 3 is a rear view of the same part, and Fig. 4 is a view of the device when attached to a cross arm. FIG. 5 is a front view of the four-sided roller part of this invention in a state where it is bent with respect to the supporting and fixing part, FIG. 6 is a partially cutaway sectional plan view of another embodiment of this invention, and FIG. 7 is a front view of the same. In the figure, 1 is the side frame, 2 is the shaft, and 3 is the side frame.
is a nut, 4 is an opening/closing nut, 5, 7, 9 are rollers, 12 is a rotating frame, 15 is an arm body, 6 is a bolt shaft, 18 is a hole, 19 is a bolt, 21 is a column, 2
2 is a seat plate, 24 is a veneer, and 26 is a chain.

Claims (1)

[Scope of utility model registration request] A side frame supporting the four-sided roller section supports rollers parallel to the rollers forming the four-sided roller section, and a rotating frame having a U-shaped cross-sectional bottom plate fixed thereto is provided on the outside of the side frame. Insert one end of the arm body between both sides of the frame, and support it with a bolt shaft that passes through the rotating frame and both sides of the arm body. A bolt or pin is passed through one of the holes drilled in the arm body, and the other end of the arm body has a connecting fixture that can be wound around an appropriate object. A cable extension roller characterized by having a support fixing part.