JP3012177B2 - Wire stripping tool - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool used for connecting a branch line to an overhead electric wire, for example, attached to a tip of a manipulator and used to be hooked on a live overhead electric wire. The present invention relates to a tool for polishing the surface of a branch line after the coating is stripped off so as to secure electrical conduction with the branch line.

[0002]

2. Description of the Related Art Conventionally, as this kind of tool, for example, an electric wire stripping and polishing tool described in Japanese Patent Application Laid-Open No. 2-246714 is known. This tool is used by being attached to the tip of a robot arm. An electric wire is taken into a first rotor held in a housing, the rotor is rotated, and the electric wire is cut by a cutter attached thereto. After the coating is stripped off, the second rotor is turned over and the electric wire is polished by a polisher attached thereto. When stripping the wire coating with a cutter, move the tool with the robot arm a predetermined distance in the axial direction of the wire,
Rotate the cutter spirally around the wire.
When the electric wire is polished by the polisher, the tool is moved in the opposite direction by a predetermined distance, and the polisher is helically rotated around the electric wire.

[0003]

In the above-mentioned conventional electric wire stripping and polishing tool, it is necessary to rotate the cutter and the grinder spirally around the electric wire. Until peeling and polishing operations cannot be performed. The operation of moving the tool in the axial direction with respect to the electric wire must be performed by operating the robot arm. This operation is not only troublesome, but also the travel distance,
There is a difficulty that requires skill in adjusting the moving speed.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a simple tool having a structure capable of sequentially and automatically performing peeling and polishing operations while being fixed at a fixed position with respect to an electric wire. .

[0005]

According to the present invention, in order to solve the above-mentioned problems, a housing 3 having a substantially cylindrical housing space 6 attached to the frame 2 and partially open, The drive gear 9 is rotatably mounted on the housing 3 so that at least a part of the wire W is exposed, and is driven in the forward and reverse directions by a motor M1. Possible 2
Split into cylindrical housing space 6 of housing 3,
And a substantially cylindrical rotor 4 rotatably accommodated by the drive gear 9 and capable of turning around the electric wire W with the rotation in one direction and stripping the coating C of the electric wire W by the cutter 25. , The rotor 4 in the housing 3
Gear 14 that can open and close the ring to accept
A polishing brush urged toward the axis of the rotor 4 so as to be movable in the radial direction thereof and to come into contact with the outer periphery of the electric wire W from which the coating C has been stripped. A latch mechanism 34 that engages with the brush 26 to prevent it from moving inward at a position where the brush 26 is radially outside the rotor 4 and does not contact the outer periphery of the electric wire W; The rotation of the latch mechanism 34 in the other direction is sensed to release the engagement of the latch mechanism 34 with the brush 26 to allow contact with the electric wire W. The release mechanism 35 meshes with the internal gear 14 in the housing 3 and the rotor 4 The electric wire stripping tool 1 was provided with a pinion gear 16 which rotates when rotating in the inside and transmits the rotation to the brush 26.

[0006]

The peeling tool 1 is attached to, for example, the tip of a manipulator and is used by receiving the rotor 4 in the housing 3 with the internal gear 14 opened. With the rotor 4 open, the peeling tool 1 is brought to a predetermined position of the overhead electric wire W, and the electric wire W is received in the rotor 4. Note that the brush 26 is previously pushed radially outward of the rotor 4 so as not to contact the outer periphery of the electric wire W, and is held by the latch mechanism 34. Then, the motor M1 is started to rotate the rotor 4
Is closed in the housing 3 while the wire W is closed, and the electric wire W is held in the rotor 4. Further, the rotor 4 is rotated a predetermined number of times, and the coating C of the electric wire W is stripped over a predetermined width by the cutter 20 attached to the rotor 4. When the rotor 4 rotates a predetermined number of times and the coating C is stripped, the rotor 4 automatically rotates in the opposite direction. The reversing mechanism 27 senses this reversal and operates the latch mechanism 34 so that the brush 26
Is released, the brush 26 comes into contact with the wire W from which the coating has been peeled off by the urging force. In this state, the housing 3
When the rotor 4 is rotated a predetermined number of times in the
The pinion gear 16 meshing with 4 rotates, and the rotation is transmitted to the brush 26. Therefore, the brush 26 grinds the electric wire W while revolving around the outer periphery of the electric wire W while rotating. During this time, the tool 1 may be kept fixed to the electric wire W.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of the electric wire stripping tool, FIG. 2 is a front view of the electric wire stripping tool with a part cut away, and FIG. 3 is a III-III in FIG.
4 is a sectional view taken along line IV-IV in FIG. 2, FIG. 5 is a perspective view of the rotor, FIG. 6 is a front view of the rotor, FIG. 7 is a side view of the rotor, FIG. Is a perspective view of the operation mechanism of the brush, and FIG. 10 is an explanatory view of the operation mechanism of the brush.

The peeling tool 1 comprises a frame 2 which can be mounted on a manipulator or the like, a housing 3 mounted on the frame 2, and a rotor 4 rotatably housed in the housing 3.

The housing 3 has a substantially cylindrical shape, is provided with an insertion opening 5 for the rotor 4 which is opened at an angle of about 90 °, and has a holding space 6 for the rotor 4 inside. The peripheral wall 3c of the embracing space 6 has an arc-shaped cross section. A drive shaft 7 is provided between both side walls 3 a and 3 b of the housing 3 so as not to be exposed to the holding space 6. At one end of the drive shaft 7, a sprocket 8 is positioned outside the side wall 3a.
Is fixed, and on the other end side, located inside 3b,
The drive gear 9 is fixed so that a part thereof is exposed in the holding space 6. A motor M1 is fixed to the frame 2 below the housing 3, and the motor M1
Is arranged in parallel with the drive shaft 7. A sprocket 11 is fixed to one end of the output shaft 10, and a chain 12 is looped between the sprocket 11 and the sprocket 8 of the drive shaft 7. Therefore, the driving gear 7
Is driven to rotate forward and backward by the motor M1. The rotation of the drive shaft 7 is detected by an encoder 13 provided at the end.

A ring-shaped internal gear 14 is mounted inside one side wall 3a of the housing 3 along the inner periphery of the housing 3. The internal gear 14 is divided into two arc-shaped gear pieces 14a and 14b.
The two gear pieces 14a and 14b are hinged to each other by a hinge 14c at one end, and can open and close a ring at the other end. The gear piece 14a is provided with a pin 15 protruding to the side.
The guide hole 40 has a substantially 90 ° arc-shaped guide hole 40 formed in the side wall 3a.

The internal gear 14 includes a pinion gear 1.
6 are engaged. The shaft 17 of the pinion gear 16 penetrates the side wall 13a and has a sprocket 18 at an outer end. The sprocket 18 is connected to the sprocket 20 via a chain 41. Sprocket 20
It is fixed to the output shaft 19 of the motor M2 fixed to the frame 2.

Therefore, the internal gear 14 is connected to the motor M
With the rotation of 2, the guide hole 40 can be rotated within the housing 3 within a 90 ° extension range. And the gear piece 14
When the joint between a and 14b hangs over the opening 5 of the housing 3, the gear piece 14b loses its support and falls down by its own weight to open the ring of the gear 14. In this state, the rotor 4 can be received inside the gear pieces 14a and 14b.

As shown in FIG. 5 to FIG.
Is a space 4 which is substantially cylindrical and has a central portion through which the electric wire W passes.
In order to be able to embrace the electric wire W in this space 4a, it is divided into two along the axial direction and hinged on one side so as to be openable and closable with each other. Therefore, the rotor 4
The main body 21 as one member and the lid 2 as the other member
And 2. The main body 21 has a cylinder substantially 90
The cover 22 has a shape corresponding to 90 ° of the cutout portion. Gear pieces 23a and 23 are formed on one end sides of the main body 21 and the lid 22 so as to be coupled to each other in a state where the two are closed to form a circular passive gear 23.
b is fixed. An opening 24 for discharging the peeled coating C1 of the electric wire W is formed between the sides of the main body 21 and the lid 22 on the mutual hinge side. The joint between the main body 21 and the lid 22 is configured to be attracted to each other by the magnet 39.

A cutter 25 is fixed to the lid 22. The cutter 25 is a rectangular flat plate, and has a blade on one side on the center side of the rotor 4. The cutter 25 is fixed to be inclined at a predetermined angle with respect to the radial direction of the rotor 4, and when the rotor 4 rotates in one direction, its blade bites into the coating C of the electric wire W, and the coating C of a predetermined width is formed. It can be cut off at once.

A roll-shaped polishing brush 26 is provided on the rotor body 21 in parallel with the axis of the rotor 4.
The brush 26 is movable in a radial direction between a position in contact with the outer periphery of the electric wire W and a position away from the electric wire W in a state where the electric wire W is held in the rotor 4. That is, the polishing brush 26 is fixed to the outer periphery of the center shaft 27, and the shaft 27 is rotatably supported at both ends by the intermediate portion of the bracket 28. Gears 29 are fixed to both sides of the shaft 27. The bracket 28 is fixed to a shaft 30 penetrating the bracket 28 on the proximal end side. Axis 30
Is rotatably mounted between both side walls 21a and 21b of the rotor body 21, has a gear 31 meshing with a gear 29 at an intermediate portion thereof, and a gear 32 located outside the side wall 21a.
Is fixed. The gear 32 meshes with the internal gear 14 when the rotor 4 is housed in the housing 3 (FIGS. 1, 8, and 9). Therefore, when the rotor 4 rotates in the housing 3, the gear 32 meshing with the internal gear 14 rotates, and the brush 26 rotates.

A spring 23 is hung between the rotor body 21 and the bracket 28, so that the bracket 28 moves the brush 26
Is urged to rotate toward the center of the image. Also,
In the rotor main body 21, the brush 26 is pushed radially outward of the rotor 4, and engages with the tip of the bracket 28 at a position where the brush 26 does not come into contact with the outer periphery of the electric wire W surrounded by the rotor 4. Latch mechanism 3 for preventing movement toward
4 and a trip mechanism 35 that detects the rotation of the rotor and releases the engagement of the latch mechanism 34 with the bracket 28 to allow the brush 26 to contact the electric wire W.

The latch mechanism 34 includes a tip of a bracket 28 that supports the brush 26 and a latch shaft 3 that engages with the tip of the bracket 28.
6. The latch shaft 36 is rotatably mounted between the side walls 21a and 21b of the rotor body 21 and has a notch 36a having a semicircular cross section at an engagement position with the tip of the bracket 28. ° Bracket 2 for each rotation
8 and release the distal end of the bracket 28 when disengaged therefrom.

The tripping mechanism 35 includes rollers 38 attached to both ends of a latch shaft 36 via a one-way clutch 37. It comprises a trip shaft 31 installed in the main body 21 and rollers 38 mounted at both ends thereof via one-way clutches 37. That is, the roller 38
Rotates freely around the latch shaft 36 in one direction, and rotates integrally with the latch shaft 36 in the other direction. The roller 38 slightly projects from the outer peripheral surface of the main body 21,
When the rotor 4 rotates in the housing 3, the inner peripheral surface of the peripheral wall 3 c of the housing 3 rolls.

The tool 1 according to this embodiment is used, for example, by being attached to the tip of a manipulator installed in a bucket of an aerial work vehicle. With the main body 21 and the lid 22 of the rotor 4 open, they are housed in the housing 3, brought to a predetermined position of the overhead electric wire W, and the electric wire W is inserted into the rotor 4. Note that the brush 26 is pushed outward in the radial direction of the rotor 4 and held by the latch mechanism 34 in advance so as not to contact the outer periphery of the electric wire W. When the rotor 4 is fitted, the gear pieces 14a, 1
4b is kept open. When the motor M1 is started, the output shaft 10, sprocket 11, chain 12, sprocket 8, shaft 7, and gear 9 rotate sequentially. In FIG. 3, when the gear 9 rotates clockwise, the main body 21 of the rotor 4 rotates counterclockwise along the inner periphery of the peripheral wall 3c of the housing 3 via the gear piece 23a meshing with the gear 9, and the lid 22 moves. The lid 22 is pulled into the holding space 6 from the opening 5, and at the same time, the lid 22 is pressed by the peripheral wall 3 c and joined to the main body 21, and the electric wire W is held inside the rotor 4. Then
As shown in FIGS. 1 to 4, the motor M2 starts, and the output shaft 19, the sprocket 20, the chain 41, the sprocket 18, the shaft 17, and the gear 16 rotate sequentially. In FIG. 3, when the gear 16 rotates counterclockwise, the gear piece 14a meshing with the gear 16 rotates counterclockwise along the inner periphery of the peripheral wall 3c of the housing 3, and pulls in the gear piece 14b to form the two gear pieces 114a. , 4b are joined annularly. When rotated by 90 °, the pin 15 operates the limit switch LS1 and stops. When the internal gear 14 is closed in a ring shape, the motor M1 rotates in the reverse direction, and the rotor 4 rotates clockwise in FIG. Then, the cutter 25 attached to the lid 22 cuts into the coating C of the electric wire W and makes one rotation around the electric wire W, thereby stripping the coating C over a predetermined width. During the rotation of the rotor 4 so far,
The roller 38 rolls in one direction on the inner circumference of the peripheral wall 3c of the housing 3, but idles with respect to the latch shaft 36 by the action of the one-way clutch 37, and at the position shown in FIG. Is at rest, the latch shaft 36
Engages the tip of the bracket 28 to hold the brush 26 in the isolated position. While the rotor 4 rotates a predetermined number of times,
When the stripping of the coating C is completed and the predetermined number of rotations is confirmed by the encoder 13, the motor M1 is reversed and the rotor 2 rotates by a predetermined angle in the opposite direction. By this reversal, the roller 3
8 rotates in the opposite direction, but this time the one-way clutch 37 is connected to the shaft 36, and the shaft 36 rotates integrally. As shown in FIG. 10B, when the shaft 36 rotates 90 °,
The tip of the bracket 28 is removed from the notch 36a, the brush 26 is pushed out by the spring 33, and is pressed against the surface of the wire W from which the coating C has been removed. After the brush 26 reaches this state, the motor M1 reverses and the rotor 4 rotates a predetermined number of times in the opposite direction. During this time, internal gear 14
The pinion gear 16 of the rotor 4 that meshes with the
The brush 26 is rotated via the gears 0, 31 and 29 to polish the surface of the electric wire W. During this time, the tool 1
It may be left fixed to. When the polishing of the electric wire W is completed, the motor M1 is stopped with the lid 22 at the position of the opening 5 of the housing 3, and the manipulator is operated to separate the tool 1 from the electric wire W. Then, the space between the lid 22 and the main body 21 is opened against the magnetic force, and the tool 1 can be separated without any trouble.

[0020]

As described above, in the present invention, the housing 3 which is attached to the frame 2 and has a substantially cylindrical embracing space 6 partially open, and at least a part of the housing 3 is exposed to the embracing space 6. The drive gear 9 is rotatably mounted on the housing 3 so as to be rotatable forward and backward by a motor M1 so that the electric wire W can be held inside.
The housing is divided into two parts that can be opened and closed along the axial direction.
Of the electric wire W is rotatably accommodated in the cylindrical holding space 6 by the drive gear 9 and can rotate around the electric wire W with the rotation in one direction so that the coating C of the electric wire W can be peeled off by the cutter 25. And an internal gear 14 capable of opening and closing a ring for receiving the rotor 4 in the housing 3, the rotor 4 being movable in its radial direction and having a coating C. A polishing brush 26 urged toward the axis of the rotor 4 so as to come into contact with the outer periphery of the electric wire W from which the brush 2 has been stripped;
A latch mechanism 34 that engages with the brush 26 to prevent it from moving inward at a position where the rotor 6 is outside the rotor 4 in the radial direction and does not contact the outer periphery of the electric wire W; A trip mechanism 35 that detects the rotation and releases the engagement of the latch mechanism 34 with the brush 26 to allow contact with the electric wire W; and an internal gear 1 in the housing 3.
And a pinion gear 1 that rotates when the rotor 4 rotates in the housing 3 and transmits the rotation to the brush 26.
6, the electric wire peeling tool 1 is configured, so that a simple tool having a structure capable of sequentially and automatically performing the operations of peeling and polishing while keeping the electric wire W fixed at a fixed position. Can be provided.

[Brief description of the drawings]

FIG. 1 is a side view of a wire stripping tool.

FIG. 2 is a front view of the electric wire stripping tool with a part cut away.

FIG. 3 is a sectional view taken along the line III-III in FIG. 2;

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 2;

FIG. 5 is a perspective view of a rotor.

FIG. 6 is a front view of the rotor.

FIG. 7 is a side view of the rotor.

FIG. 8 is an opposite side view of the rotor.

FIG. 9 is a perspective view of a brush operating mechanism.

FIG. 10 is an explanatory diagram of the operation mechanism of the brush.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wire stripping tool 2 Frame 3 Housing 4 Rotor 5 Opening 6 Enclosure space 9 Drive gear 14 Internal gear 14a Gear piece 14b Gear piece 16 Pinion gear 21 Main body 22 Lid 23 Gear 23a Gear piece 23b Gear piece 25 Cutter 26 Brush 33 Spring 34 Latch mechanism 36 Release mechanism M1 Motor W Electric wire C Coating

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-56-115112 (JP, A) JP-A-5-174941 (JP, A) JP-A-5-176427 (JP, A) JP-A-5-176427 176428 (JP, A) JP-A-6-133429 (JP, A) JP-A-48-10698 (JP, A) JP-A-5-7932 (JP, A) JP-A-4-61409 (JP, U) Hikaru Hei 2-246714 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) H02G 1/12

Claims (1)

(57) [Claims] 1. A housing mounted on a frame and having a substantially cylindrical housing space partially open, and rotatably mounted on the housing so that at least a part thereof is exposed in the housing space, and A drive gear that is driven in forward and reverse rotation, and is divided into two parts that can be opened and closed along the axial direction so that the electric wire can be held inside, and is rotated by the drive gear in a cylindrical holding space of the housing. A substantially cylindrical rotor capable of being housed and rotatable around the electric wire with rotation in one direction and capable of peeling off the coating of the electric wire by a cutter, wherein the rotor is provided in the housing. An internal gear capable of opening and closing a ring for receiving, wherein the rotor moves in a radial direction of the rotor between a position in contact with an outer periphery of an electric wire and a position away from the electric wire; And a roll-shaped polishing brush urged toward the axis of the rotor so as to contact the outer periphery of the electric wire, and the brush is located radially outside the rotor and does not contact the outer periphery of the electric wire. A latch mechanism that engages with the brush to prevent it from moving inward, and detects rotation of the rotor in the other direction to disengage the latch mechanism from the brush and contact the electric wire. An electric wire skin comprising: an allowable trip mechanism; and a pinion gear that meshes with the internal gear in the housing and rotates when the rotor rotates in the housing to transmit the rotation to the brush. Stripping tool.