JPH089528A - Stress cone handling device - Google Patents

Abstract

PURPOSE:To facilitate the handling of a stress cone by operating clamping members with the cams of linking mechanisms, to be interlocked with the operation of grips provided in body parts. CONSTITUTION:A pair of semicircular body parts 12 are arranged surrounding the periphery of a stress cone 5 being an object to be handled. When grips 16 provided in the body parts 12 are grasped under this condition, and the grips 16 provided with linking mechanisms 14 are operated, cams 36a provided in these linking mechanisms 14 push clamping members 18 against the stress cone 5. By the pushing of these clamping members 18, the stress cone 5 is sandwiched between the clamping members 18, or between a clasping member 18 and a part of a circular body part 12 being on the opposite side to the clamping member 18. Consequently, it becomes possible to facilitate the handling of the stress cone 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stress cone handling device for handling a stress cone assembled to a cable connecting portion.

[0002]

2. Description of the Related Art One of CV cable connection construction methods is a prefabricated joint construction method. FIG. 2 is an explanatory view showing the procedure of this prefabricated joint construction method. In this construction method, as shown in FIG. 2A, the pair of cables 1-1 and 1-2 to be connected have the sheaths 2-1 and 2-2 removed at the ends to be connected. , And insulators 3-1 and 3-
2 is peeled off, so that the conductors 4-1 and 4-2 are exposed in a predetermined length. Prior to connecting the conductors 4-1 and 4-2 to each of the cables 1-1 and 1-2, stress cones 5-1 and 5 for ensuring electrical performance and safety of the connection portion are provided.
-2 and the insulation reinforcing body 6 are inserted. The stress cones 5-1 and 5-2 do not interfere with the connection of the conductors 4-1 and 4-2, and the sheaths 2-1 and 2-1 shown by broken lines in the figure.
-2 is pushed to the cut end position, and the insulating reinforcing member 6 is also placed near one stress cone 5-2.

In this state, as shown in FIG. 2 (b), the conductors 4-1 and 4-2 are connected via the compression sleeve 7. After that, as shown in FIG. 2C, the insulating reinforcing body 6 is moved to the central portion of the conductor coupling portion so as to cover the compression sleeve 7. Then, sheath 2-
The stress cones 5-1 and 5-2, which have been pushed to the cut end positions 1 and 2-2, are moved toward the insulating reinforcement body 6 that covers the compression sleeve 7, and the stress cones 5-1 and 5-2.
The 5-2 is pushed into each corresponding end of the insulation reinforcement 6, as shown in FIG. 2 (d). After that, the connection box 8 and the like are mounted, whereby the connection work of the cables 1-1 and 1-2 is completed.

[0004]

By the way, as described above, in the prefabricated joint method, the stress cone 5 is moved to the cut end position of the sheath 2 on the insulator 3, or the stress cone 5 is insulated and reinforced. The work of pushing it into the end of the body 6 is required. The stress cone 5 is made of insulating rubber or the like, and the stress cone 5 is inserted through the insulator 3 made of polyethylene or the like in a strongly tightened state. Therefore, a large force is required to move the stress cone 5 on the insulator 3, and a particularly large force is required to push the stress cone 5 into the end portion of the insulating reinforcing body 6. For this reason, the handling work of the stress cone 5 is a difficult work that requires physical strength. Moreover, if foreign matter such as oil or sweat adheres or is scratched during handling of the stress cone, an uneven potential is likely to be generated at that portion, which is safe from the standpoint of electrical insulation performance. May cause inconvenience. for that reason,
It was not preferable to handle this stress cone directly with bare hands, and careful handling was required. For these reasons, the emergence of a device that enables easy handling of stress cones has been strongly desired.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a pair of semi-circular main body parts which are connected so as to be arranged around the outer circumference of a stress cone. Provide a grip. A link mechanism and a clamp member are provided in association with at least one of the grips. The link mechanism has a cam portion that presses the clamp member against the stress cone so as to clamp the stress cone inside the pair of semicircular main body portions when the grip provided with the link mechanism is operated. It is provided.

[0006]

In the stress cone handling device according to the present invention,
A pair of semi-circular body portions are arranged around the outer circumference of the stress cone to be handled. When the grip provided on the main body is gripped in this state and the grip provided with the link mechanism is operated, the cam portion provided on the link mechanism presses the clamp member against the stress cone.
By pressing this clamp member, the stress cone is clamped between the clamp members, or,
It is clamped between the portion of the annular body portion that is opposite the clamp member.

[0007]

The present invention will be described in detail below with reference to the illustrated embodiments. FIG. 1 is a front view showing a stress cone handling device according to the present invention. As shown in FIG. 1, the stress cone handling device 10 according to the present invention includes a pair of semi-circular main body portions 12, 12 and link mechanisms 14, 14 and grips 16 provided on each main body portion 12. 16 and clamp members 18, 18 that are interlocked with the link mechanism by the operation of the grip 16. The body portion 12 is
It is made of a material having high rigidity such as metal or plastic. A notch 20 is formed in the central portion of the semicircular body portion 12 to allow the clamp member 18 to move radially inward. Also, each notch 2
Outside of 0, a side plate fixed to one side of the body portion 12 forms a projecting portion 12a of the body portion 12.

A screw member 22 is provided on the outer side of each body portion 12.
Thus, the pair of brackets 24-1 and 24-2 are fixed. FIG. 3 is a perspective view of the bracket 24-1 and the clamp member 18. As shown in FIG. 1 and FIG. 3 (a), the linear portion of each bracket 24-1, 24-2 extending along the overhanging portion 12 a of the main body portion 12 has a clamp member 18 for the linear member. The long hole 25 is formed. In addition, each bracket 24-1, 24-2,
A bent portion 24 a is provided at the arcuate end of each body portion 12 so as to rise radially outward of the body portion 12 in parallel with each other. Between the bent portions 24a facing each other, both main body portions 1
A coupling means 26 is provided for releasably coupling the two. Further, the connecting means 26 is provided on the both bent portions 24a.
28 is formed. Slit 28
Is open to the tip edge of each bent portion 24a, as clearly shown in FIG. 3 (a). Further, a stopper 30 for the fastening means 26 is formed by a protrusion on the open edge of the slit 28 of the one bracket 24-1.

Each connecting means 2 provided at the bent portion 24a
As shown in FIG. 1, 6 includes a bolt 26a and a nut 26b screwed to the bolt 26a. Bolt 26a
Is swingably supported by a flange portion 31 provided on the bent portion 24a of the other bracket 24-2 paired with the one bracket 24-1 via a pivot 32. The pivot 32 is arranged at right angles to the plane containing the body parts 12, 12 as seen in FIG. Therefore, when both body portions 12, 12 are arranged to surround the outer circumference of the stress cone 5 shown in phantom in FIG. 1, the bolt 26a is received in each slit 28 in the solid line in FIG. In the upright position indicated by
By tightening the nut 26b screwed to a,
Both body parts 12 can be connected to each other such that they exhibit an annular shape. In this connected state, the nut 2
Even if 6b is slightly loosened, as long as the stopper 30 abuts the side of the nut 26b, the bolt 26a does not tilt to the release position shown by the phantom line in FIG. 1, and the connection is reliably held.

Further, by sufficiently loosening the nut 26b so that the nut 26b rides over the stopper 30, the bolt 26a can be inclined toward the release position shown in the drawing, whereby the connection between the two main body portions 12, 12 is released. be able to. Instead of the bolt 26a having the pivot 32, a normal bolt having no pivot can be used. However, since the bolt 26a having the pivot 32 is always connected to the one body portion 12, it is advantageous in preventing the connecting means 26 from being lost and enabling a quick connecting operation.

FIG. 4 is a side view of the stress cone handling device shown in FIG. 1, the lower half of which is shown in cross section along the line A--A shown in FIG. Each clamp member 1
As shown in FIGS. 1 and 4, the block 8 has a block 34 made of, for example, rubber fixed to central portions of inner surfaces facing each other. The inner surface of each block 34 is formed into an arcuate surface along the maximum outer diameter of the stress cone 5. As the block 34, in addition to rubber, for example, F
A material such as RP or nylon that is unlikely to damage the stress cone 5 can be appropriately selected. Further, by forming the clamp member 18 itself from a material that does not easily damage the stress cone 5, the block 34 can be omitted. At both ends of the clamp member 18 that supports the block 34, narrow guide portions 18a that are received in the elongated holes 25 are formed so as to penetrate the brackets 24-1 and 24-2. As a result, the respective clamp members 18 move toward each other and away from each other,
That is, it is movable inward and outward in the radial direction of the ring formed by the body portions 12, 12. The clamp member 18, as clearly shown in FIG.
A hanger member 35b having an elongated hole 35a formed by a notch is fixed, and a bolt 35c penetrates the overhanging portion 12a and is screwed into a screw hole 35d of the main body 12 to be fixed thereto and the tip thereof. Penetrates the long hole 35a.
The bolt 35c prevents the clamp member 18 from shifting laterally. Thereby, the clamp member 18 can always move the center position in the vertical direction.

A link mechanism 1 provided on each body portion 12
Mainly referring to FIG. 1, the reference numeral 4 includes a pair of parallel link members 36 arranged in parallel to each other, and a connecting link member 38 between the both link members 36 and connecting these members to each other. Both of the parallel link members 36 are swingably supported by the overhanging portion 12a of the main body portion 12 via a pivot 40 near one end thereof. Both pivots 40 have a body portion 1
It is perpendicular to the plane containing 2 and parallel to each other. One end of each parallel link member 36 is close to the clamp member 18, and a cam surface 36a eccentrically formed with respect to the pivot 40 is provided as a cam portion at one end thereof. The cam surface 36a is provided on the clamp member 1 when the parallel link members 36 are swung clockwise around the pivot 40 as viewed in FIG.
The block 34 provided on the stress cone 5 is engaged with the stress cone 5 and is pressed against the stress cone 5.

A connecting link member 38, which connects the parallel link members 36 in parallel with each other, is connected to the other ends of the parallel link members 36 via a pivot 42 parallel to the pivot 40. The pair of parallel link members 36 and the connecting link member 38, together with the overhanging portion 12a that supports them, are parallel link mechanism 1.
Make up 4. The parallel link mechanisms 14 are arranged as a pair in the diametrical direction of the pair of body portions 12 arranged in an annular shape, and each connection link member 38 of the parallel link mechanism 14 is provided with:
The grip 16 is fixed. Therefore, by sliding the pair of grips 16 in the clockwise direction as viewed in FIG. 1, the link mechanisms 14 arranged in pairs in the radial direction.
The clamp member 18 can be pressed inward, and the maximum diameter portion of the stress cone 5 can be reliably sandwiched between the blocks 34 of the clamp member 18.

Since the stress cone 5 can be sandwiched between the blocks 34 of the clamp member 18, the stress cone 5 can be handled by manipulating the grip 16 without being directly touched by human hands. . Therefore, the risk that the stress cone 5 is scratched or foreign matter is attached is reduced, and easy handling is possible. Further, by operating the grip 16, when the stress cone 5 is pushed into the insulating reinforcing body 6, for example, a strong torque can be applied to the stress cone 5, and this insertion work becomes easy.

At this time, a rotational torque can be applied to the stress cone 5 sandwiched by the pair of blocks 34, but it is difficult to apply a strong thrust force to the stress cone 5 in the axial direction only with the block 34. . Therefore, it is preferable to provide a holder 44 as shown in FIGS. 4 and 5, which allows the stress cone 5 to be twisted in one direction and smoothly pushed in the axial direction. The holder 44, as shown in FIG.
a pair of support members 46 each formed of a screw member extending from the back surface of a at a right angle to the plane including the main body portion 12, a support plate 48 movably supported by the support members 46, and fixed to the support plate 48. Holder member 50.
A positioning nut member 52 and a fixing thumbscrew member 54 are screwed into the support member 46, and the support plate 48 is sandwiched and fixed between the screw members 52 and 54.
A cylindrical spacer is used instead of the nut member 52, and the support plate 48 is provided between the spacer and the thumbscrew member 54.
Can be clamped. Bent portions 48 of both support plates 48
Holder members 50 are respectively fixed to the surfaces of a that face each other, and the pair of holder members 50 have a semi-cylindrical shape so as to receive the rear end portion of the stress cone 5 in cooperation with each other.

Therefore, the holder member 50 is adjusted by adjusting the nut member 52 and the thumbscrew member 54 with the stress cone 5 held between the pair of blocks 34.
Thus, the rear end of the stress cone 5 can be received. In this way, by holding the rear end of the stress cone 5 by the holder 44, the block 3
In addition to exerting a pressing force or twisting torque from the large diameter portion of the stress cone 5 sandwiched by 4, the pressing force or twisting torque is also exerted from the rear end portion of the stress cone 5 in the cable axial direction. Thrust can be applied to the stress cone 5. Therefore, when the stress cone 5 is pushed into the insulating reinforcing body 6, the stress cone 5 can be pushed smoothly with a smaller force, and the insertion work can be performed more easily. Also, at the end of work,
Loosen the thumbscrew member 54 and move the holder member to the stress cone 5.
The grip member 18 by operating the grip 16
With the block 34 of No. 1 loosened from the stress cone 5,
Loosen the connecting means 26. Both of these body portions 12 can be removed from the stress cone 5 by a series of these releasing operations.

In the example shown in FIGS. 1 and 4, the clamp member 18 is attached to the brackets 24-1 and 2 of the body portion 12.
Although the example in which it is locked to 4-2 is shown, as shown in FIG. 6, the clamp member 18 can be locked to the connecting link member 38. FIG. 6 is a partial front view showing another embodiment of the present invention, in which components having the same functions as those shown in FIG. 1 are designated by the same reference numerals.
On the outer surface of the clamp member 18, as shown in FIG. 6, a bracket 56 provided with an elongated hole 56a stands up. On the other hand, to the connecting link member 38, a suspension bracket 58 in which an elongated hole 58a that partially overlaps the elongated hole 56a of the bracket 56 is formed is coupled by a pin 60. A pin 6 is provided in the overlapping portion of the two long holes 56a and 58a.
2 is inserted, and the clamp member 18 is movably held inward in the radial direction of the main body portion 12 via the pin 62. Therefore, as in the example shown in FIG. 1, by operating the grip 16, the cam surface 36a provided on the parallel link member 36 of the link mechanism 14 is pressed against the clamp member 18 provided with the block 34 on the inner surface. Therefore, the stress cone 5 can be held between the blocks 34.

While the example in which the link mechanism and the clamp member are provided in association with each of the pair of grips has been described above, the link mechanism and the clamp member can be provided only in one of the grips. In this case, the other grip is fixedly provided on the main body,
The stress cone is clamped between one clamp member and the body portion opposite the clamp member.
Further, although the example of the 4-link mechanism is shown as the link mechanism, the link mechanism is not limited to this and various link mechanisms can be applied.

[0019]

As described above, in the stress cone handling device according to the present invention, the stress cone located inside the main body can be clamped by operating the grip provided on the main body. From this, after pinching, without directly touching this stress cone,
The stress cone can be handled easily because it can be handled via the grip. Also, in the prefabricated joint method, when moving the stress cone on the insulator of the cable or pushing this stress cone into the end of the insulating reinforcement, a strong torque can be applied to the stress cone via the grip. , These operations can be performed quickly and easily.

[Brief description of drawings]

FIG. 1 is a front view showing a stress cone handling device according to the present invention.

FIG. 2 is an explanatory diagram of a prefabricated joint construction method showing an example of a cable connection method in which a stress cone handled by the stress cone handling device according to the present invention is used.

FIG. 3 is a perspective view of the bracket and the clamp member shown in FIG.

4 is a side view of the stress cone handling device shown in FIG. 1. FIG.

5 is a front view of the holder shown in FIG.

FIG. 6 is a partial front view showing an enlarged part of another embodiment of the stress cone handling device according to the present invention.

[Explanation of symbols]

 5 stress cone 12 body part 14 link mechanism 16 grip 18 clamp member 36a cam part

Claims (4)

[Claims] 1. A pair of semi-circular main body parts connected so as to be arranged so as to surround the outer circumference of a stress cone, grips provided on the respective main body parts, and provided in association with at least one of the grips. A link mechanism operable by the grip, a clamp member provided in association with the link mechanism and movable inward in the radial direction from the body portion, and provided on the link mechanism to operate the grip. A stress cone handling device including a cam portion that presses the clamp member against the stress cone so as to clamp the stress cone. 2. The link mechanism is provided in each of the grips, and each link mechanism is swingable to a corresponding main body portion via mutually parallel pivots substantially perpendicular to a plane including the pair of main body portions. Each of the parallel links including a pair of parallel link members connected to each other and a connecting link member that connects the parallel link members in parallel to each other via a pivot parallel to the pivot and is provided with the corresponding grip. The stress cone handling device of claim 1, wherein the member comprises the cam portion that engages the clamp member by rocking about the pivot. 3. An elongated hole for receiving both ends of the clamp member is formed at both side portions in the circumferential direction of the main body portion where the grip is provided, and the clamp member has a central portion. Are located inside the main body portion, and narrow guide portions formed at both ends are arranged to penetrate through the corresponding slits, and the clamp member is held by the main body portion so as to be movable in the vertical direction. The stress cone handling device according to claim 2, which is provided. 4. At least a pair of support members extending from one side surface of each of the main body portions substantially at right angles to a plane including the pair of the main body portions, and supported by the support members.
A holder member for receiving an end of the stress cone sandwiched by the clamp member.
The stress cone handling device according to any one of 1 to 3.