JPH1098813A - Wound cover application tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tool capable of applying a cover onto the conductor exposed part of an electric wire. SOLUTION: A base body 1 integrally fitted with a first handle 3 and a counterpart body 2 integrally fitted with a second handle 4 and provided pivotally on the base body 1 are equipped. The base body 1 secures or releases the end and edge of a grounding cover wound in a cylindrical shape by a cam shaft 9. A traction rod 5 to be inserted inside this grounding cover is provided in such a way as to be freely mountable and detachable on the counterpart body 2. Both handles 3, 4 are operated to open the base body 1 and counterpart body 2 and these operations open the wound cover.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wrapping type cover mounting tool used for covering a conductor exposed portion of an electric wire.

[0002]

2. Description of the Related Art Wound-type covers are used for restoring insulation of exposed conductors formed by bypass work. FIG. 8 shows the configuration. This is a rectangular plastic sheet spirally wound. Usually, it is formed into a tubular shape by winding, and when used, the cover C is opened and applied to the conductor exposed portion of the electric wire. When released in this state, the winding type cover returns to the original spiral shape, and is attached by winding the electric wire around the center.

The following means are known for mounting the cover. The operator opens the cover with his hands wearing insulating gloves. This is performed using a tool described in JP-A-6-245339. This tool is provided with an opening mechanism of a wrapping cover at the tip of the insulating tube, and this opening mechanism is operated at the base end of the insulating tube. The opening mechanism includes a fixing plate for fixing the outer end of the wrapping type cover, and an opening plate sliding on the fixing plate. The open plate has a center pin inserted into the inner periphery of the cover. The cover is opened by sliding the opening plate and moving the center pin away from the fixed side of the cover. The opening plate is slid by operating a lever provided on the base end side of the insulating tube, and the outer end of the cover is fixed and released by rotating a grip provided on the base end of the insulating tube.

[0004]

However, the insulated gloves are thick and have poor workability. In particular, the winding type cover hardens in the winter and is hard to open. In addition, these tools are large and inconvenient to carry. In addition, the operability is poor, such as rotating the grip at the base end of the insulating tube to fix and release the outer end of the cover. In addition, it can only be used for indirect operations via insulating tubes. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a tool that is small, lightweight, and can be easily fitted with a wrapping type cover.

[0005]

SUMMARY OF THE INVENTION A wrapping type cover mounting tool according to the present invention comprises a base integrated with a first handle, and a counterpart integrated with a second handle and pivotally attached to the base. I can. The base is provided with a means for fixing / releasing the edge (the edge along the axial direction in the case of a cylindrical shape) of the winding type cover wound into a cylindrical shape. The corresponding body is provided with a detachable tow bar inserted into the inner periphery of the winding type cover. By operating both handles, the base body and the corresponding body are opened, and the winding type cover entrained by this operation is opened.

Means for fixing and releasing the edge of the wrapping cover include, for example, supporting a cam shaft on the base, and holding and releasing the wrapping cover between the shaft and the base by rotation of the cam shaft. It is mentioned. It is desirable that a lever for rotating the cam shaft be provided on the cam shaft, and the end of the lever be formed in a hook shape. Thus, the camshaft can be easily rotated using a hook or the like even from a place away from the tool.

It is preferable to provide a mechanism for holding the base and the corresponding body at a predetermined opening angle. This mechanism is
A claw pivotally attached to the base body and a positioning plate fixed to the corresponding body and having a notch with which the claw is engaged. Further, it is preferable to provide a joining portion of the operation rod in a part of the wrapping type cover mounting tool. By attaching the tool of the present invention to the tip of the operating rod, the work of attaching the wrapping type cover can be performed even from a place distant from the electric wire.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be specifically described below. [Structure] The tool of the present invention is shown in FIGS. FIG. 1 is a front view,
FIG. 2 is a right side view. This tool has a substantially T-shaped base 1
And a substantially T-shaped counterpart 2 pivotally attached thereto.
A first handle 3 and a second handle 4 were connected to the base 1 and the corresponding body 2, respectively. When the space between the handles 3 and 4 is closed with the shaft 19 as a fulcrum, the space between the base 1 and the corresponding body 2 is widened, and when the space between the handles 3 and 4 is opened, the base 1 and the corresponding body 2 are closed. An end edge (not shown) of the winding-type cover wound in a cylindrical shape is fixed to the base, and the tow bar 5 is inserted into the inner periphery of the winding-type cover and attached to the corresponding body 2. The winding type cover can be opened by operating the handle.

The structure of the base 1 is shown in FIGS. FIG. 3 is a front view of the base 1, and FIG. 4 is a sectional view taken along line AA of FIG. The base 1 comprises a fixing portion 1A of the winding type cover and a connecting main portion 1B extending at a right angle from the middle. The length of the fixing portion 1A corresponds to the width of the wrapping type cover (the length in the axial direction when the wrapping cover is wound into a cylindrical shape). The fixing portion 1A is bent twice in a direction perpendicular to its axis (see FIG. 4), and its tip ends with a bent piece 1D. A step 1C was formed at the inside corner of the bent piece 1D. Bearing blocks 6 (broken lines in FIG. 4) are fixed to both ends of the fixing portion 1A formed in this manner. Circular holes provided on the upper surface at both ends of the fixing portion are bolt insertion holes 7 for fixing the block. A gap 8 is formed between the side surface of the block 6 and the bent piece 1D of the fixed portion by the step portion 1C. This gap 8 is formed in a direction parallel to the connecting main portion 1B, and is open downward. The edge of the winding type cover is inserted into the gap 8.

Note that the end surface of the fixing portion 1A (for example, FIG.
A stopper (not shown) may be provided at the left end of the fixing portion 1A). Specific examples of the stopper include fixing a metal plate to the end surface of the fixing portion 1A. When the wrapping type cover is inserted into the gap 8 of the fixing portion 1A, the end of the wrapping type cover abuts against the stopper, so that the position of the wrapping type cover along the longitudinal direction of the fixing portion can be easily determined. .

A cam shaft 9 is provided on the fixing portion 1A as means for fixing and releasing the wrapping type cover. FIG. 5A is a plan view of the camshaft, and FIG. 5B is an end view thereof. The cam shaft 9 is a round bar-shaped eccentric cam (FIG. 5). A flat portion 10 is formed on the outer periphery by a cutout along the longitudinal direction, and the other portion is formed of a cylindrical surface. The cam shaft 9 is a bearing block 6 shown in FIG.
, And is axially supported by the fixed portion 1A. The rotation of the camshaft 9 changes the distance between the camshaft surface and the bent portion 1D of the fixed portion, thereby fixing and releasing the end of the winding-type cover. When the distance between the camshaft 9 and the inner surface of the bent piece 1D is large, the flat portion 10 faces the bent piece 1D, and when the distance is small, the cylindrical surface faces. A large number of V-grooves 11 extending in the axial direction were machined in parallel in the circumferential direction on the cylindrical surfaces at both ends and the central part of the cam shaft 9 to form irregularities on the surface. This is to prevent slippage when the winding-type cover is sandwiched between the camshaft 9 and the fixed portion bent piece 1D.

The rotation of the cam shaft 9 is performed by a cam shaft lever 12 (see FIG. 2). The lever 12 is mounted in a direction perpendicular to the center of the camshaft 9 and penetrates the base 1. The two circular holes 13 at the center of the camshaft in FIG.
It is an insertion hole for the bolt that fixes 12. The tip of the lever 12 was formed in a hook shape. When performing the indirect work by mounting the tool of the present invention on the tip of the operation rod, another operation rod is used as a hook-shaped lever.
If it is set to 12, the camshaft 9 can be easily rotated.

On the other hand, the connecting main portion 1B is a long hole along the longitudinal direction.
14,15 are formed in series (FIG. 3). The long hole 14 on the fixed portion side is a through hole for the camshaft lever 12, and the other long hole
Reference numeral 15 denotes a mounting hole for the joint 16 of the operation rod (FIG. 2: its function will be described later). Mounting hole for the first handle at the end of the connecting main part 1B
With 17 In addition, a shaft hole 18 that penetrates in the width direction orthogonal to the long hole 15 is provided. Here is the axis for pivoting the counterpart 2
19 (FIG. 2) is inserted. Further, a shaft hole 21 (FIG. 3) for pivotally attaching the claw 20 (FIG. 2) is provided on a side surface of the connecting main portion 1B. The pawl 20 is used to hold the handles 3, 4 at a predetermined open position.

The structure of the counterpart 2 is shown in FIGS. FIG. 6 is a front view, and FIG. 7 is a side view. The corresponding body 2 includes a mounting portion 2A of the tow rod 5 described later, and a connecting sub-portion 2B extending in a direction perpendicular to the middle of the mounting portion 2A. Supporting pieces 31 and 32 of the tow bar 5 project from both ends of the mounting portion 2A, and the inner space between the supporting pieces 31 and 32 is formed slightly larger than the width of the base fixing portion 1A. That is, if the winding part cover is attached to the base 1 and the corresponding part 2 is closed, the support pieces 31 and 32 are located on both sides of the winding type cover. The support pieces 31 and 32 have an insertion hole 33 for the tow bar 5 and a mounting hole 34 for a plunger (not shown). One support piece 31 was provided with a notch 35 continuous with the insertion hole so that the tow bar 5 could be inserted from the outer periphery of the insertion hole (FIG. 7). The insertion hole of the other support piece 32 is a circular hole without a notch. The reason why the plungers are provided on the support pieces 31 and 32 is to hold the tow bar 5 at a predetermined position. The tow bar 5 is a metal bar having a grip ball 36 at one end (FIGS. 1 and 2). Although not shown in FIGS. 1 and 2, grooves are formed on the outer periphery of both ends of the tow bar 5. When the tow bar 5 is mounted at a predetermined position on the corresponding body 2, the tip of the plunger is engaged with the groove of the tow bar 5.

The connecting vertical portion 2B is composed of a pair of metal pieces connected to the mounting portion 2A. Each metal piece has an interval that sandwiches the connection main portion 1B of the base 1. In addition, the mounting part 2A
A tongue piece 38 protruding therefrom is formed. A mounting hole 39 for attaching the second handle was provided there. In addition, the connection slave
A cutout 40 was provided on the side surface of one of the metal pieces of 2B. A positioning plate 41 (FIG. 2) is fixed to the notch 40. A notch 42 is formed in the positioning plate 41, and the tip of the claw 20 is engaged with the notch 42 to fix the handles 3, 4 at a predetermined open position. The two notches 42 are formed because the degree of opening of the handles 3 and 4 varies depending on the length of the winding-type cover.

The base 1 and the corresponding body 2 are assembled as follows. That is, the connecting main part 1B of the base 1 is arranged between the connecting sub-parts 2B of the counterpart 2, and the joining part 16 is inserted into the long hole 15 of the connecting main part 1B.
Insert the base of. Then, the shaft hole 37 of the connecting vertical portion 2B, the shaft hole 18 of the connecting main portion 1B, and the shaft hole provided at the root of the joint portion 16 are aligned and penetrated by the shaft 19. As a result,
1B and the joint 16 are fixed at a fixed angle, and the corresponding body 2 is
It is configured to be rotatable with respect to.

The base 1 and the corresponding body 2 are always closed by a torsion spring 50 (FIG. 1). on the other hand,
A torsion spring 51 is also used for the claw 20 for maintaining the opening distance between the base 1 and the corresponding body 2 so as to always rotate counterclockwise in FIG. Further, in the present embodiment, the tool of the present invention is fixed to the tip of the operating rod so that the work of attaching the wrapping cover can be performed from a position away from the electric wire. A connecting portion 16 (FIG. 2) for connecting the operating rod and the tool protrudes from the connecting main portion 1B of the base. As described above, the joint portion 16 is fixed to the main connection portion 1B by inserting the base portion into the long hole 15 and penetrating through the shaft 19 together with the main connection portion 1B and the subordinate connection portion 2B. The position at which the joint 16 is provided may be an appropriate position of the tool. For example, the first and second handles 3 and 4 may be provided.

A hook 52 for drop prevention is connected to the end of the first handle 3 (FIG. 1). If the hook 52 is hung on the belt of the operator, it is possible to prevent the tool from dropping during utility pole work or the like.

[Structure of Winding Type Cover] Next, the structure of the winding type cover (see FIG. 8) will be described. The cover C is formed by winding a rectangular polyethylene mixture sheet into a cylindrical shape. It is usually cylindrical by winding, and its cross section is formed in a spiral shape. Here, when wound in a cylindrical shape, the edge located on the outer circumference is defined as one edge C1, and the edge located on the inner circumference is defined as the other edge C2. A plurality of projections C3 are formed on the inner circumference to prevent displacement after mounting. In addition, the tool of the present invention can be widely used for a sheet-shaped tool wound in a cylindrical shape, in addition to the winding type cover for insulation described here.

[Operation Procedure and Operation] The work of attaching the cover C to the exposed portion of the conductor of the electric wire includes a direct work performed by an operator holding a tool and an indirect work performed by mounting a tool on the tip of an operation rod. There are two ways.

First, the procedure of the direct work will be described. (1) Conductor exposed parts are formed in the electric wire during bypass work. Usually, the cross section of the conductor is circular, but in the case of an electric wire having a non-circular cross section, such as a hard-to-reach snow wire, the fin portion of the electric wire may be removed with a knife or the like to form a circular electric wire cross section. (2) Hold both handles 3 and 4 to open base 1 and counterpart 2. In this state, one end edge C1 of the wrapping type cover is inserted into the gap 8 of the fixing portion 1A. Winding type cover is fixed part
It may be inserted from the front of 1A, or may be inserted by sliding in the longitudinal direction of the fixed portion 1A from the end. (3) The camshaft lever 12 is pulled up, and one end edge C1 of the winding cover is sandwiched between the camshaft 9 and the bent portion 1D of the fixed portion. As a result, the winding-type cover is held on the base 1.

(4) Insert the tow bar 5 from the end of the winding type cover to the inner periphery. At this time, the tip of the tow bar 5 (the side without the gripping ball 36) does not protrude from the end of the winding type cover. (5) In this state, the handles 3 and 4 are opened, and the corresponding body 2 is closed toward the base. The grip ball side of the tow bar 5 is fitted into the insertion hole 33 through the notch 35 of one support piece 31. Then, the tow bar 5 is slid in the axial direction, and the leading end side is fitted into the insertion hole of the other support piece 32. (6) At this time, it is confirmed that the tip of the plunger fixed to the support pieces 31, 32 is engaged with the groove of the tow bar 5, and that the tow bar 5 is mounted at a predetermined position.

(7) Next, grasp the handles 3, 4 and
And the corresponding body 2 are opened. Since one end edge C1 of the wrapping type cover is held by the base 1, the wrapping type cover is opened when the corresponding body 2 (tow rod 5) is separated from the base 1. The opened wrapping type cover has one edge C1 fixed to the base and the other edge C1 fixed.
C2 is caught on the towbar by winding. (8) At this time, the base 1 is attached to one edge C1 of the winding-type cover.
A tensile force is applied in the direction away from However, when the wind-type cover is pulled in the same direction, the cam shaft 9 rotates to narrow the interval with the bent piece 1D of the fixed portion, so that the wind-type cover is more firmly held. Therefore, the wrapping type cover is used as the base 1
Never get out of the way. (9) The claw 20 on the side of the base is rotated in the direction of the arrow in FIG. 2, and its tip engages with the notch 42 of the positioning plate 41. Thereby, the base 1 and the corresponding body 2 are kept open.

(10) With the winding-type cover open, press its inner surface against the electric wire. One edge C1 of the wrapping type cover is fixed to the base 1, but the other edge C2 is not fixed but merely hooked on the drawbar 5. Therefore, when the cover is pressed against the electric wire, the other end edge C2 is disengaged from the tow bar 5, and the winding-type cover is returned to a tubular shape by being wound and wound around the electric wire. (11) The camshaft lever 12 is pushed down, and one end edge C1 of the winding-type cover is removed from the base 1. With this operation, the camshaft lever 12 is rotated in a direction to increase the distance between the camshaft lever 12 and the bent piece 1D of the fixed portion. (12) After that, the attached wrapping type cover is pressed by hand from the outer periphery to adapt to the electric wire.

The procedure for attaching the tow bar 5 after holding one end edge C1 of the winding-type cover on the fixing portion 1A may be performed as follows. Opening the handles 3 and 4 with one end edge C1 of the wrapping type cover held by the fixing portion 1A,
Is closed on the substrate side. At this time, both support pieces 31, 32 of the corresponding body
Are located at both ends of the wrapping type cover. Then, the tow bar 5 is made to penetrate in order from one end of the corresponding body 2 to one support piece 31, the inner periphery of the wrapping type cover, and the other support piece 32. Thereafter, the operation is performed in the same manner as the above-described procedure.

The procedure for attaching the opened winding type cover to the electric wire may be performed as follows. With the wound-type cover open, apply the inner surface to the exposed conductor of the electric wire. In this state, the handles 3 and 4 are grasped, and the base 1 and the corresponding body 2 are opened to the maximum. Since the base body 1 and the corresponding body 1 are opened more than the length of the winding-type cover (the length from one edge C1 to the other edge C2), the other end C2 of the winding-type cover is Get off. Then, the winding-type cover is returned to a cylindrical shape by winding, and is wound around the electric wire. Thereafter, one end edge C1 of the winding-type cover may be removed from the base 1 in the same manner as in the above-described operation procedure. This procedure cannot be performed by the indirect work described below. This is because in indirect work, the tool is attached to the tip of the operating rod, and it is difficult to operate the handle.

Next, the indirect work will be described. In the indirect operation, one end of an operation rod (not shown) is connected to the joint 16. The procedure of attaching the wrapping type cover to the tool and the operation of the tool at that time are almost the same as in the case of direct work. The operator holds the other end of the operation rod and presses the open-type cover opened on a predetermined electric wire. The other edge C2 of the wrapping type cover is the tow bar 5
And the wrapping type cover winds around the electric wire. When removing one edge C1 of the winding type cover from the base 1, another operation rod is used. A hook is provided at the tip of another operating rod, and this hook is hooked on the cam shaft lever 12 so that the cam shaft 9
To remove the winding-type cover from the base 1. After that, the attached wrapping type cover is finally held down from the outer periphery with a trowel or the like so as to adapt to the electric wire.

[0028]

As described above, according to the tool of the present invention, the work of mounting the wrapping type cover can be easily performed. In particular, the workability is good even when the winding type cover hardens in the winter and is difficult to open. Also, if a tool is attached to the tip of the operating rod, the mounting operation can be performed even from a place distant from the electric wire. That is, it can be used for both direct work and indirect work.

[Brief description of the drawings]

FIG. 1 is a front view of the tool of the present invention.

FIG. 2 is a right side view of the tool of the present invention.

FIG. 3 is a front view of a base.

FIG. 4 is a view taken in the direction of arrows AA in FIG. 3;

5A is a front view of a camshaft, and FIG. 5B is an end view.

FIG. 6 is a front view of a corresponding body.

FIG. 7 is a right side view of the corresponding body.

FIG. 8A is a partial longitudinal sectional view of a wrapping type cover, and FIG.
Is a cross-sectional view.

[Explanation of symbols]

1 Base 1A Fixed part 1B Connection main part 2 Corresponding body 2A
Attachment part 2B Connection slave part 3 First handle 4 Second handle
5 Tow bar 6 Bearing block 7 Insertion hole 8 Clearance 9 Camshaft 10 Flat part 11 V groove 12 Camshaft lever 13 Circular hole 14,15 Slot
16 Joint 17 Mounting hole 18 Shaft hole 19 Shaft 20 Claw 21 Shaft hole 3
1,32 support piece 33 insertion hole 34 mounting hole 35 notch 36 grip ball 37
Shaft hole 38 Tongue 39 Mounting hole 40 Notch 41 Positioning plate 42 Notch 50
Torsion spring 51 Torsion spring 52 Fall prevention hook C Winding type cover C1 One edge C2 The other edge C3 Projection

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masato Watanabe 2-5-1-10 Okino, Wakabayashi-ku, Sendai City, Miyagi Prefecture Tohoku Electric Power Co., Inc.Sendai Minami Sales Office (72) Inventor Yoshio Saito 2-1, Kita-Nippon Electric Cable Co., Ltd. (72) Inventor Naoki Aihara 1-1-2, Koriyama, Taishiro-ku, Sendai, Miyagi Prefecture In-Kita Nippon Electric Cable Co., Ltd. Asahi Metal Seiko Co., Ltd. (72) Inventor Haruhiko Sakamoto Kitakawara character, Itami City, Hyogo Prefecture

Claims (5)

[Claims] 1. A base integrated with a first handle and a counterpart integrated with a second handle and pivotally attached to the base. The base and the counterpart can be opened and closed by operating both handles. A winding type cover mounting tool, wherein the base comprises means for fixing and releasing an edge of the winding type cover wound in a cylindrical shape, and the corresponding body includes an inner part of the winding type cover. A winding-type cover mounting tool, characterized in that a tow bar inserted around the circumference is detachably provided. 2. The means for fixing and releasing the edge of the wrapping type cover comprises: supporting a camshaft on the base; and rotating the camshaft to pinch the wrapping type cover between the shaft and the base. 2. The tool according to claim 1, wherein the tool is released. 3. The tool according to claim 2, further comprising a lever for rotating the camshaft, wherein the end of the lever is formed in a hook shape. 4. A mechanism for holding the base and the counterpart at a predetermined opening angle, the mechanism comprising a claw pivotally attached to the base and a notch fixed to the counterpart and engaged with the claw. The winding type cover mounting tool according to claim 1, further comprising a positioning plate having the positioning plate. 5. The wrapping cover mounting tool according to claim 1, wherein a joining portion of the operation rod is provided at a part of the wrapping cover mounting tool.