JPS6334682B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a ratchet-type stripping tool used for stripping off the coating of main lines during hot-staying work on overhead distribution lines.

Conventionally, methods for stripping the sheathing of insulated wires include (1) adjusting the angle of the stripping cutting blade in the stripping tool to match the wire size, and then driving the cutting edge of the cutting blade into the wire sheathing; Thereafter, the entire stripping tool is rotated around the wire to peel off the coating in a spiral manner. (2) The wire is gripped by a stripping tool according to the wire size, and then the entire stripping tool is rotated. Therefore, a one-time stripping method is known in which the coating is stripped off at once by the required stripping width.

However, in the case of each of the above-mentioned stripping methods, the entire stripping tool must be rotated, so two hot stays must be used for rotation, which is cumbersome and uneconomical to operate. Furthermore, in the case of the spiral stripping method, there is a problem in that it is difficult to confirm the necessary stripping width of the coating, and in the case of the batch stripping method, there is a problem in that a number of stripping tools are required depending on the size of each wire. .

SUMMARY OF THE INVENTION An object of the present invention is to provide a ratchet type peeling tool that can advantageously solve the above-mentioned problems.

Next, the present invention will be explained in detail using illustrated examples.

1 to 8 show a ratchet-type stripping tool according to an embodiment of the present invention, and FIG. 9 shows a cutting blade, in which a pair of aluminum semi-annular holding members each having a semi-circular groove are shown. One end in the circumferential direction of each of the holding members 1 and 2 is pivotally connected to the holding member 1 and 2 so as to be openable and closable by a pivot 3 extending in the longitudinal direction of the holding member, and an end of a closing lug 4 made of a semicircular spring steel wire is attached to the holding member 1 and 2. It is fixed by being press-fitted into a drilled fitting hole or by being fitted by applying an adhesive, and each holding member 1, 2 forms a circular hole by the elasticity of the closing spring 4. Closed as shown. Further, one end of a guide member 5 for wire insertion is fixed to the other end in the circumferential direction of each of the holding members 1 and 2, and a ring-shaped tool attachment engaging member is attached to the other end of the guide member 5. A joint 19 is formed, and each guide member 5
The gap therebetween gradually widens as it moves away from the holding member.

Aluminum adapters 7 and 8 having semicircular grooves 6 for fitting electric wires are fitted into each holding member 1 and 2,
Opening 2 provided in the middle of one adapter 7
A cutting blade 11 for skin stripping is provided on the slope of 0, and has an intermediate cutting edge 9 extending in the longitudinal direction of the groove in the semicircular groove 6, and an end cutting edge 10 that is bent and continuous at both ends thereof so as to form an obtuse angle. are in contact with each other and are removably fixed by screws 21, and in the notches provided on both end surfaces in the circumferential direction of each holding member 1, 2, there is a sliding and retaining strip plate 22 made of a stainless steel plate or a nickel-plated steel plate. One side in the width direction of the strip plate 22 is brought into contact and fixed with a screw 23, and the other side in the width direction of the strip plate 22 is opposed to a notch provided in the end surface in the circumferential direction of the adapter, and is held by the adapter. This prevents the member from coming off in the radial direction.

A semicircular guide plate 24 made of stainless steel or nickel-plated steel is fitted onto the semicircular outer peripheral surface of one longitudinal end of each of the holding members 1 and 2, and the screw 2
A semicircular ratchet wheel 12 is brought into contact with the end face of one end of each of the holding members 1 and 2 and fixed by a screw 26, and the hollow rotating member 13 is fixed to the holding members 1 and 2 by a screw 26. 2 and the semicircular ratchet wheel 12 so as not to move in the longitudinal direction of the holding member and the radial direction of the holding member, and so as to be freely rotatable in the circumferential direction of the holding member.

The proximal end of the claw piece 15 disposed inside the rotating member 13 is pivotally connected to the rotating member 13 by a support shaft 27 extending in the longitudinal direction of the holding member, and the distal end portion of the claw piece 15 and the rotating member 13 are connected to each other. A spring 18 is interposed in a compressed state between the claw pieces 15 and the teeth 14 of the semi-circular ratchet wheel 12, and a rod-shaped spring 18 is provided between the claws 15 and 18 in a compressed state. The other end of the rotation operation member 17 is arranged to extend in the radial direction of the holding member and is slidably fitted into the rotation member 13. , the rotation operation member 1 within the rotation portion 13
A lock pin 28 extending in a direction perpendicular to 7 is fixed.

The outer surface of the intermediate portion of the claw piece 15 and the rotating member 13
A pin engagement groove 29 extending in the longitudinal direction of the holding member is provided in the pin support portion of the lock pin 28 .
A lock spring 30 is interposed in a compressed state between the rotation operating member 17 and the rotation member 13 in a compressed state, and as shown in FIGS. When the lock pin 28 is disposed so as to extend in a direction perpendicular to the longitudinal direction of the holding member, that is, when the lock pin 28 is removed from the intermediate portion of the claw piece 15, when the turning member 13 is turned in one direction, the claw piece 15 becomes a semicircular ring-shaped claw. It can move over the teeth 14 of the wheel 12. Further, as shown in FIG. 7, when the lock pin 28 is engaged with the intermediate pin engagement groove 29 of the pawl piece 15, the pawl piece 15 is moved between the teeth of the semicircular annular pawl wheel 12 due to the strong elasticity of the log spring 30.
4, the pivot member 13 is locked in position around the semicircular ratchet wheel 12;
Therefore, even if the holding members 1 and 2 are opened, the turning member 13 will not fall off from the holding members.

A retaining metal fitting 31 is pivotally attached to the end face of the other end of each holding member 1, 2 by a support shaft 32, and the retaining metal fitting 31 is held by a locking portion 33 and a spring 34 to be engaged with the end face of the adapter. It has an engaging piece 35 made of a sphere that is pressed toward the end face of the holding member, and two engaging holes 36 and 37 are formed in the end faces of the holding members 1 and 2 at intervals in the circumferential direction of the spindle 32. The engagement piece 35 is provided at one engagement hole 36.
, the locking portion 33 engages with the end surface of the adapter to prevent the adapter from coming off from the other end of the holding member, and the engaging piece 35 engages with the other end of the adapter. 37, the locking portion 33 is removed from the end surface of the adapter, so
The adapter can be removed and replaced with an adapter for a different wire size.

When stripping the main line of an overhead power line using the ratchet type stripping tool of the above embodiment, first lock the rotating member 13 to the semicircular ratchet wheel 12 as described above, and then turn the stripping tool as shown in FIG. In addition, a stake 3 such as a known grip, clamp, stake, etc.
8 to grip the tool mounting engagement part 19 that is integrally provided on one of the wire insertion guide members 5, and then lift the stripping tool using the stay 38 to remove the stripping tool between the wire insertion guide members 5. After positioning the main wire (covered wire) 39 at the bottom, the stripping tool is pulled downward by the stay 38, and the main wire 39 resists the elasticity of the closing spring 4 to close each guide member 5 and the holding members 1, 2. After fitting the main wire 39 into the semicircular groove 6 of each adapter 7, 8 while pushing open the main wire 39, it is immediately held by each holding member 1, 2 and these by the elasticity of the closing spring 4. The adapters 7 and 8, the semicircular ratchet wheel 12, etc., are closed to form an annular shape.

Next, the stick 38 is attached to the tool mounting engagement portion 1.
9 and remove it from the rotation engagement part 1 of the rotation operation member 17.
6, by pulling the stay 38, the rotation operating member 17 is rotated approximately 90 degrees,
By releasing the lock between the semicircular ratchet wheel 12 and the rotating member 13, and then reciprocating the stay 38 in the vertical direction, , each of the holding members 1 and 2, each of the adapters 7 and 8 held thereby, and the cutting blade 11, etc., are repeatedly rotated by a certain angle, and the coating 40 of the main wire 39 is coated in a predetermined position by the rotation of the cutting blade 11. Cut and remove across the width. FIG. 11 shows the main line stripped by the operations described above.

After skinning is performed as described above, the holding member is rotated so that the pivot shaft 3 is located diagonally below the main line 39, and the rotating member 13 is rotated below the main line 39, and then After rotating the rotary operating member 17 by about 90 degrees by the stay 38 and locking the rotating member 13 and the semicircular ratchet wheel 12, the rotating operating member 17,
By pulling one of the holding members downward via the rotating member 13 and the semicircular ratchet wheel 12, each of the holding members 1, 2 and the parts held by them are pulled against the elasticity of the closing spring 4. Open it, remove it from the main line 39, and lower the skinning tool to the ground.

When carrying out this invention, the locking mechanism between the rotating member 13 and the semicircular ratchet wheel 12 may be omitted. Further, in the embodiment described above, the tool mounting engagement part 19 is provided in series with the wire insertion guide member 5, but instead of having this configuration, an annular part made separately from the wire insertion guide member 5 is used. You may fix the tool attachment engagement member which has this to one or both holding members.

According to this invention, after gripping the tool mounting engagement portion fixed to the holding member with stakes such as grip clamp stakes, the stripping tool is lifted by the stake, and the stripping tool is lifted up between the wire insertion guide members 5. Position the main line 39 at the bottom of
Next, by pulling one of the holding members downward via the tool mounting engagement part with the stake,
Inserting the main wire 39 into the semicircular groove 6 of each adapter 7, 8 while automatically expanding each holding member 1, 2 and each electric wire insertion guide member 5 against the elasticity of the closing spring 4. is completed and the main wire 39 is fitted into the semicircular groove 6 of the adapters 7, 8, each holding member 1, 2 is automatically rotated in the closing direction by the elasticity of the closing spring 4, and the cutting blade 11 By biting the cutting edge into the sheath 40 of the main line 39, the holding members 1, 2 and the semicircular ratchet wheel 12 can be held facing each other so as to form a circular ring, and then the stay 38 can be rotated. Each holding member 1,
2, each adapter 7, 8, cutting blade 11, etc., are reversely rotated by a certain angle to remove the coating 4 of the main wire 39.
0 can be easily cut and removed over a predetermined width, and one worker can easily cut and remove one stake 3.
8 can be used to easily perform the stripping work, and since the adapters 7 and 8 are removably attached to the holding members 1 and 2, when stripping wires of different sizes, it is possible to easily perform the stripping work. By simply replacing only the adapter, other parts can be used for the same purpose, resulting in economical effects.

[Brief explanation of the drawing]

1 to 8 show a ratchet type peeling tool according to an embodiment of the present invention, in which FIG. 1 is a left side view, FIG. 2 is a partially cutaway left side view, and FIG. 3 is a left side view. Right side view, Figure 4 is a partially cutaway front view, Figure 5 is a partially cutaway front view.
The figures are a sectional view taken along the line A-A in Fig. 1, Fig. 6 is a sectional view taken along the line B-B in Fig. 4, Fig. 7 is a partially vertical front view showing the state in which the lock mechanism is activated, and Fig. 8. 3 is an enlarged sectional view taken along the line CC in FIG. 3. FIG. 9 is a perspective view of the cutting blade, FIG. 10 is a partially longitudinal left side view showing how the stripping tool of the embodiment is used, and FIG. 11 is a perspective view showing the stripped electric wire. In the figure, 1 and 2 are holding members, 3 is a pivot, 4 is a closing spring, 5 is a guide member for inserting electric wires, 6 is a semicircular groove for fitting electric wires, 7 and 8 are adapters, 9 is an intermediate cutting edge, and 10 is End cutting edge, 11 is a cutting blade, 12 is a semicircular ratchet wheel, 13 is a rotating member, 1
4 is a tooth, 15 is a claw piece, 16 is a stake engagement part,
17 is a rotation operation member, 18 is a spring, 19 is a tool mounting engagement part, 20 is an opening, 28 is a lock pin,
30 is a lock spring, 31 is a retaining metal fitting, 38 is a stay, 39 is a main line, and 40 is a cover.

Claims (1)

[Claims] 1 One end of the pair of semi-annular holding members 1 and 2 in the circumferential direction is pivoted by a pivot 3 so as to be openable and closable, and each holding member 1 and 2 is connected via a closing spring 4, so that each holding member A wire insertion guide member 5 is fixed to the other end of each of the holding members 1 and 2 in the circumferential direction, and a tool mounting engagement portion is directly or indirectly fixed to at least one of the holding members. Adapters 7 and 8 having semicircular grooves 6 for fitting electric wires are removably fitted and fixed therein, and one adapter 7 has an intermediate cutting edge 9 extending in the longitudinal direction of the groove in the semicircular groove 6, and A cutting blade 11 having an end cutting edge 10 that is bent and continuous is fixed to both ends thereof, and a semicircular ratchet wheel 12 is fixed to one end in the longitudinal direction of each of the holding members 1 and 2. A pawl piece 15 that engages with the teeth 14 of the semicircular pawl wheel 12 is attached to a pivoting member 13 that is attached so as to be able to rotate along one end in the longitudinal direction of 1 and 2;
The other end of a rotation operation member 17 having a rotation engagement portion 16 at one end is attached, and a spring 18 is engaged with the claw piece 15 to press it against the teeth of the semicircular ratchet wheel 12. A ratchet type peeling tool characterized by being integrated.