JP3378764B2 - Protective tube mating release device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protective tube disengagement device used for removing a protective tube for protecting an electric wire by covering the outer circumference of the electric wire arranged on a utility pole from the outer circumference of the electric wire.

[0002]

2. Description of the Related Art When performing construction work in the vicinity of an electric wire arranged on a utility pole, in order to prevent the working devices from directly touching the electric wire during the work, The outer circumference is covered with a protective tube (so-called "poly tube") formed of an insulating material.

As shown in FIGS. 10 to 12, the poly pipe P is composed of a body portion P1 and a connecting portion (female fitting portion) P2. The main body P1 is formed in a cylindrical shape having an annular cross section, and an opening P1 formed in one place of the cylindrical portion P1.
A pair of main body side flanges P4a and P4b are formed from both ends of b. Then, by opening the main body side brim portions P4a and P4b and inserting the electric wire into the internal space P1a of the cylindrical portion P1, the outer circumference of the electric wire is covered and protected.

In order to protect the electric wire over a wide area, the fitting protrusion (male fitting portion) P3 'of another poly tube is inserted into the fitting groove P5 formed in the connecting portion P2. The pipes P and P'are connected. The connecting portion P2 also covers the main body side brim portions P4a and P4b.
a and P6b are formed.

As shown in FIG. 13, the attachment of the poly pipe P to the electric wire is performed by an aerial work vehicle in which a work platform S is provided at the tip of a boom B which is provided on the vehicle body so as to be capable of undulating and expanding and contracting ( (Not shown), the work table S of this aerial work vehicle is positioned in the vicinity of the electric wire D, and then the work is performed by the poly pipe insertion device 9 attached to the vertical post V at the tip of the boom B.

The poly-tube inserting device 9 includes an electric wire mounting member 91.
A poly pipe guide member 92, a poly pipe feeding mechanism 93,
It is composed of an arm mechanism 94. Wire mounting member 9
1 is configured to be attachable to the electric wire D, and the distal end portion of the poly-tube guide member 92 is configured to be attachable. The poly pipe guide member 92 is configured such that a base end portion thereof can be attached to the poly pipe feeding mechanism 93, and the poly pipe feeding mechanism 93 is attached to an arm mechanism 94 arranged above the vertical post V. There is.

The poly pipe feeding mechanism 93 is a front side feeding mechanism 93.
a and a rear side feeding mechanism 93b, and each feeding mechanism 9
3a and 93b have a pair of rollers arranged to face each other. Then, with both rollers, the flange portion P of the poly pipe P
The poly pipe P is fed out by sandwiching 4 and P6 and rotating and driving these rollers. The poly pipe P inserted into the outer circumference of the electric wire by the poly pipe inserting device 9 uses the poly pipe feeding mechanism 93 to connect the connecting portion P2 and the fitting projection P3 ′.
And are inserted, fitted and connected.

When the poly pipe P is to be removed from the outer circumference of the electric wire D, the fitting between the connecting portion P2 and the fitting projection P3 'is released.
As described above, when the fitting is released, the rear poly tube which was the front poly tube at the time of insertion is moved to the front side feeding mechanism 93.
The front poly pipe, which was the rear poly pipe at the time of feeding, is held by the rear feeding mechanism 93b. Then, the connecting portion side flange P6 is opened by an opening device (not shown).
In the state where a and P6b are spread out, only the rear feeding mechanism 93b is rotated in the direction opposite to the feeding direction, whereby the rear poly pipe is pulled out from the front poly pipe.

[0009]

In the poly pipe insertion device 9 thus constructed, the poly pipe feeding mechanism 93 is composed of the front side feeding mechanism 93a and the rear side feeding mechanism 93b. There is a problem that the mechanism 93 becomes large. Further, since the front side feeding mechanism 93a and the rear side feeding mechanism 93b have to be operated separately to release the fitting of the poly pipe, the operation of the poly pipe feeding mechanism 93 becomes complicated and the work efficiency is not good. There was also a problem.

The present invention has been made in view of the above problems, and provides a device for disengaging a protective tube, which is small in size and capable of removing a poly tube with a simple operation. It is an object.

[0011]

In order to achieve the above object, the protective tube disengagement device according to the present invention is provided with a first protective tube for removing the protective tube from the outer circumference of the electric wire. It is for releasing the insertion fitting of the male fitting part and the female fitting part respectively formed in the second protective tube. In addition, the female fitting portions of the first protective tube and the second protective tube are formed with slit-shaped openings extending in the axial direction, so that the female fitting portions can be elastically deformed and expanded in the outer diameter direction. The fitting releasing device is composed of a protective tube driving means, a protective tube holding means, and an opening expanding means.

The protection tube drive means is configured to be movable in the axial direction forward of the first protection tube, and the protection tube holding means is capable of moving the first protection tube in the axial direction by the protection tube drive means. The second protective tube is held by facing the male fitting portion or the female fitting portion of the first protective tube in the opened state. The opening expanding means elastically deforms and expands the female fitting portion of the first protective tube or the second protective tube. The opening expansion means is provided for the first and second protective tubes.
It has a pair of opening claws that extend in the axial direction.
When releasing the fitting of the protection tube,
Between the opening and the slit-shaped opening of the second protective tube,
The outer diameter that forms the slit-shaped openings of both protective tubes
By inserting it between the brim parts protruding in the direction,
Only expand the protective tube located on the side. According to the protective tube disengagement device configured as described above, if the first protective tube is moved axially forward with the female fitting portion of the second protective tube expanded by the opening expanding means, The fitting of the protective tube can be released.

In addition, in the above protective tube disengagement device, it is preferable to provide an opening holding means in which the protective tube holding means and the opening expanding means are integrated, and when the second protective tube is moved forward in the axial direction. It is preferable that the second holding tube is held by the opening holding means and the female fitting portion is expanded. With such a structure, the protective tube holding means and the opening expanding means can be easily obtained.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION A preferred embodiment of the present invention will be described below with reference to FIGS. First,
Poly tube insertion device according to the present invention (protective tube disengagement device)
An aerial work vehicle K to which 1 is attached will be described. As shown in FIG. 2, an aerial work vehicle K is provided with a swivel base K2 which is rotatable on a vehicle body K1, and an expandable and retractable boom K3 is attached to the swivel base K2 so that the boom K3 can move up and down. ing. A vertical post K5, which can always maintain a vertical position by a leveling mechanism, is attached to the tip of the boom K3, and a workbench K4, which can freely rotate horizontally, is attached to the vertical post K5.

A sub-boom SB is provided above the vertical post K5.
Is attached. The sub-boom SB is composed of a winch portion SB1 and an arm portion SB2, and is arranged so as to be capable of up and down movement with respect to a vertical post K5 as shown by a chain line in FIG. Is configured. A wire W is provided on the winch portion SB1 so as to be able to be drawn out and wound up, and a hook F attached to the tip end of the wire pipe 50 allows the poly pipe holder 50 to be lifted.

The poly-tube inserting device 1 attached to the aerial work vehicle K constructed as described above includes an electric wire attaching member 10 and
A poly pipe guide member 20, a poly pipe driving mechanism (protection pipe driving means) 30, an opening holding device (opening holding means) 40,
It is composed of a poly tube holder 50. The wire holding member 10 and the poly-tube guide member 20 are disclosed in
Since this is a publicly known one having a configuration similar to that disclosed in Japanese Patent Publication No. 149640, etc., a detailed description thereof will be omitted and only an outline will be described below.

The electric wire holding member 10 is attached to the electric wire D while being sandwiched from above and below, and the poly pipe guide member 20 is attached so as to extend obliquely. Poly tube guide member 20
Is formed in a long shape by an insulating material having elasticity and flexibility such as polyethylene, and the poly pipe P fed out through the outer periphery of the poly pipe guide member 20 smoothly covers the outer periphery of the electric wire D. It is like this.

The base end of the poly pipe guide member 20 is connected to the poly pipe driving mechanism 30. The poly tube drive mechanism 30 is
It has a pair of feeding rollers (not shown) arranged to face each other. Then, the flange portions P4 and P6 of the plastic pipe P are sandwiched by both feeding rollers, and these feeding rollers are rotationally driven to feed the plastic pipe P.

The poly-tube drive mechanism 30 constructed in this way
The opening holding device 40 and the opening holding device 4 are provided below
A poly pipe holder 50 that is configured to be attachable to and detachable from 0 is provided. The opening holding device 40 is used when releasing the fitting of the poly pipe P, and the poly pipe holder 50 provided below the opening holding device 40 is a poly pipe P.
It is used when the fitting is performed.

The opening holding device 40 will be described below. The opening holding device 40 includes an opening claw 41, an opening claw roller 42, and a hinge 43. Hinge 43
Is composed of a left hinge 43a and a right hinge 43b,
Each of them is pivotally supported in the left-right direction with respect to the opening holding device body 44. An opening claw roller 42 and an opening claw 41 are attached to the hinge 43.

The opening claw roller 42 includes a left opening claw roller 42a attached to the left hinge 43a and a right hinge 43b.
And the right opening claw roller 42b attached to the. The left and right opening claw rollers 42a and 42b are made of a poly pipe P.
The hinges 43 are arranged at intervals such that the hinge 43 does not rotate in the left-right direction when the main body side flange P4 is positioned between the opening claw rollers 42a and 42b.

The opening claw 41 is also composed of a left claw member 41a attached to the left hinge 43a and a right claw member 41b attached to the right hinge 43b. Each claw member 4
Two claw rollers 41c and 41d having an outer diameter larger than the thickness of the claw members 41a and 41b are arranged vertically on the 1a and 41b, respectively. The opening claws 41 configured in this manner are also arranged at intervals such that the hinge 43 does not rotate in the left-right direction when the main body side flange P4 of the poly pipe P is positioned between the rollers 41c and 41d. There is.

When the poly pipes P'and P are fitted together as described above, the pawl members 41a and 41b and the open pawl rollers are held in the state of being opened left and right as shown by the chain line in FIG. 42a, 42b, etc. are not brought into contact with the fitted poly pipe P.

When releasing the fitted poly pipes P ', P, first, as shown in FIG. 4, the opening claw 41 is swung from the open state shown by the chain line to the closed state shown by the solid line. Next, the worker M is attached to the electric wire D by the poly pipe P.
Using the poly pipe gripping tool H, the guide member 20 is passed through the poly pipe insertion guide 10 and then moved to the poly pipe driving mechanism 30. After that, the main body side flange portion P4 of the poly pipe P is sandwiched between the two feeding rollers, and the feeding rollers are reversed so that both opening claw rollers 42a, 42b and both claw members 41a, 4b.
Located between 1b. When the poly pipes P'and P are released, the poly pipe holding device 50 is removed from the opening holding device 40 as shown by a chain line in FIG.

5 (A) and FIG. 7 when the feeding roller 31 is rotated in the reverse direction with the main body side flange portion P4 being sandwiched by the both opening claw rollers 42a, 42b and both claw members 41a, 41b. As shown in, the connecting portion side brim portion P6 is located between the opening claw rollers 42a and 42b,
The opening claw 41 is pushed right and left and opened. Thereafter, when the feeding roller 31 is further driven in the reverse direction, as shown in (B), the main body side flange portion P4 'of the poly pipe P'fitted into the poly pipe P is clamped.

When the connecting portion P2 of the lower poly pipe P moves to below the opening claw 41, the reverse drive of the feeding roller 31 (moving backward in the axial direction) is stopped. After that, the feeding roller 31 is driven in the normal direction (moved forward in the axial direction), so that the main body side flange portion P4 'of the upper poly pipe P'is held by the opening claw 41 as shown in FIGS. 6 and 8. At the same time, the connecting portion P2 of the lower poly pipe P is elastically deformed and expanded in the outer diameter direction to open the connecting portion side flange portions P6a and P6b.

In this way, the connecting portion P of the lower poly pipe P
After the elastic deformation and expansion of 2 are performed, the feeding operation of the poly pipe driving mechanism 30 is performed to move the upper poly pipe P ′ upward. Here, since the fitting between the upper poly pipe P'and the lower poly pipe P is not completely released only by elastically deforming and expanding the connecting portion P2 of the lower poly pipe P, the upper poly pipe P'is not completely released. When the poly pipe P'is moved upward, the lower poly pipe P also tries to move upward.

However, the claw member 41 of the opening claw 41.
Stoppers 41e and 41f that extend horizontally outward are formed at the upper ends of a and 41b. For this reason,
The upper end surfaces P7 of the connecting portion side flanges P6a, P6b located outside the claw members 41a, 41b have stopper parts 41e, 41.
It comes into contact with f, and the upward movement of the lower poly pipe P is restricted. As a result, only the upper poly pipe P'moves upward, and the fitting between the upper poly pipe P'and the lower poly pipe P is completely released, so that the lower poly pipe P and the upper poly pipe P'are disengaged. The poly tube P'can be separated.

When the poly pipes P'and P are separated in this manner, the lower poly pipe P falls by its own weight, but the claw member 4
Since the claw rollers 41c and 41d are disposed on the lapping portions 1a and 41b, the opening claw 41 causes the brim portion P6 on the connecting portion side.
Even when a and P6b are spread, the lower poly pipe P smoothly drops.

The protective tube holding means and the opening expanding means in the protective tube disengagement device of the present invention do not necessarily have to be integrated opening holding means as described above. For example, as shown in FIG. 9, an opening expanding device (opening expanding means) 80 for elastically deforming and expanding the connecting portion P2 of the lower poly pipe P is provided with an opening claw that is rotatable around a horizontally extending shaft. It may be configured by 81. According to the opening expanding device 80 configured in this way, the connecting portion side flanges P6a, P6b are arranged in a state in which the opening claws 81 are vertical as shown by the chain line.
It is possible to elastically deform and expand the connecting portion P2 to open the connecting portion side brim portions P6a and P6b in the same manner as described above by placing the connecting portion P2 between them and rotating them by 90 ° as shown by the solid line.

Further, as the protective tube holding means, a stopper 82 for restricting the upward movement of the poly pipe P may be provided separately from the opening expanding means. Here, stopper 8
2 is composed of a left stopper 82a and a right stopper 82b, and is provided with a gap that does not interfere with the connecting portion P2 when the connecting portion side brim portions P6a and P6b are not opened. . Then, in the state where the opening claw 81 is rotated until it becomes horizontal, the connecting portion side brim portions P6a, P6b are pushed open and the upper end surface P7 abuts the left and right stoppers 82a, 82b, and the lower poly pipe The upward movement of P can be restricted.

Even in the protective tube disengagement device constructed as described above, since only the upper poly tube P'can be moved upward, the upper poly tube P'and the lower poly tube P'can be moved. The fitting can be completely released, and the lower poly pipe P and the upper poly pipe P'can be separated.

[0033]

As described above, in the protective tube disengagement device of the present invention, in order to remove the protective tube from the outer circumference of the wire, the slit-shaped opening is formed so as to extend in the axial direction. It is for releasing the insertion fitting of the male fitting portion and the female fitting portion formed in the first protective tube and the second protective tube having the female fitting portion that is elastically deformable and expandable in the radial direction. is there. And
In the state where the protection tube drive means is configured to be capable of moving the first protection tube forward in the axial direction, and the protection tube holding means is capable of moving the first protection tube in the axial direction by the protection tube drive means. The male fitting part or the female fitting part of the first protective tube is made to face the female fitting part or the male fitting part of the second protective tube to hold the second protective tube, and the opening expanding means is configured as the first protective part. The female fitting portion of the pipe or the second protective pipe is elastically deformed and expanded. According to the protective tube disengagement device configured as described above, if the first protective tube is moved axially forward with the female fitting portion of the second protective tube expanded by the opening expanding means, Since the fitting of the protection tube can be released, the fitting removal device for the protection tube can be obtained with a simple configuration.

In the above protective tube disengagement device, it is preferable to provide an opening holding means in which the protective tube holding means and the opening expanding means are integrated, and when moving the second protective tube forward in the axial direction. It is preferable that the second holding tube is held by the opening holding means and the female fitting portion is expanded. With such a structure, the protective tube holding means and the opening expanding means can be easily obtained, so that the protective tube disengagement device can be manufactured easily and at low cost.

[Brief description of drawings]

FIG. 1 is a side view of a protective tube disengagement device according to the present invention.

FIG. 2 is a side view of an aerial work vehicle to which the fitting removing device for the protective tube is attached.

FIG. 3 is a III in FIG. 1 of the protective tube disengagement device.
FIG.

FIG. 4 is a view of the device for disengaging the protective tube from IV in FIG.

FIG. 5 is a front view showing an opening expanding device at the time of releasing operation in the protective tube fitting releasing device.

FIG. 6 is a partially enlarged view of the protective tube disengagement device.

FIG. 7 is a cross-sectional view taken along line VII of FIG. 5A of the protective tube disengagement device.

8 is a VIII-VI in FIG. 6 of the fitting device of the protective tube
It is a II sectional view.

FIG. 9 is a side cross-sectional view showing a different configuration of the opening expanding device in the protective tube fitting device according to the present invention.

FIG. 10 is a front view and a side view of a poly pipe.

11 is a cross-sectional view taken along the line XI-XI in FIG. 10 of this poly tube.

12 is a cross-sectional view of the poly tube taken along line XII-XII in FIG.

FIG. 13 is a side view of a conventional poly-tube inserting device.

[Explanation of symbols]

1 Poly tube insertion device 10 Electric wire mounting member 20 Poly tube guide member 30 Poly tube drive mechanism 40 Aperture expansion device 50 Poly tube holder D electric wire K aerial work vehicle P Poly tube (protection tube)

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takashi Mori 1052, Yamashita, Ryoke, Ageo City, Saitama Prefecture 10 Aichi Corporation, Ageo Factory, Inc. (72) Keiichi Yokoyama, 1152 Yamashita, Ryoke, Ageo City, Saitama Prefecture 10 Aichi Corporation, Ageo Plant (72) Inventor Fumio Watanabe 10 1152 Yamashita, Ryoke, Ageo City, Saitama Prefecture Aichi Corporation, Ageo Plant (56) Reference JP-A-8-149641 (JP, A) ) Actual Kaihei 3-74114 (JP, U) Actual public Sho-58-28408 (JP, Y1) (58) Fields investigated (Int.Cl. ⁷ , DB name) H02G 1/02

Claims (2)

(57) [Claims] 1. A male fitting part or female fitting at least at one end
A first protective tube having a joint and the above-mentioned at least one end
Can be inserted and fitted into the female fitting part or male fitting part of the first protective tube
With a second protective tube with a different male fitting part or female fitting part
By inserting and fitting the male fitting portion into the female fitting portion,
Fitting of a protective tube in which the first protective tube and the second protective tube are connected
Is a protective tube disengagement device for releasingThe first protective tube and the second protective tube are respectively in the axial direction.
To form a pair of brim portions that extend in the
A slit-shaped opening is formed, Furthermore, the decoupling device for the protective tube is It is possible to move the first protective tube forward in the axial direction.
Protective tube drive means,The Axial movement of the first protective tube by the protective tube drive means
Male fitting formed on the first protective tube in a state where
A female member having a mating portion or a female fitting portion formed on the second protective tube.
The second protection tube is made to face the fitting part or the male fitting part.
Protective tube holding means for holding The female fitting portion of the first protective tube or the second protective tube is
Sexual transformationAxial direction of the first and second protective tubes for
Has a pair of opening claws extending in the directionSuch as the opening expansion means
It consists ofThe opening claws of the opening expansion means release the fitting of the protective tube.
When removing the first protection tube and the second protection tube
Inserted between the brim parts, The The female fitting portion of the second protective tube is expanded by the opening expanding means.
Move the first protection tube axially forward while tensioned.
Protective tube characterized by releasing the fitting of the protective tube
Unmating device. 2. The protection tube holding means and the opening expanding means integrally constitute an opening holding means, and the second protection by the opening holding means when moving the second protection tube axially forward. 2. The protective tube disengagement device according to claim 1, wherein the tube is held and the female fitting portion is expanded.