JP3389450B2 - Protection tube insertion / removal 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 for protecting an electric wire by covering the outer circumference of the electric wire arranged on a utility pole when the protective tube is inserted into the outer circumference of the electric wire and removed from the electric wire. Insertion / removal device

[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. 12 to 14, the poly pipe P is composed of a main 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.

Further, when protecting the electric wire over a wide range, it is necessary to insert and fit a fitting projection (male fitting portion) P3 'of another poly pipe into the fitting groove P5 formed in the connection portion P2. To connect the poly pipes P and P '. The connecting portion P2 also covers the main body side brim portions P4a and P4b.
6a and P6b are formed.

As shown in FIG. 15, the mounting of the poly pipe P on 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.

When the poly pipe P is mounted by the poly pipe inserting device 9, the poly pipe feeding mechanism 93 and the electric wire attaching member 91 attached to the electric wire D are connected to the poly pipe guide member 92.
The poly pipe P fed by the poly pipe feeding mechanism 93 is guided to the outer circumference of the electric wire D.

When a plurality of poly pipes P are connected, the front poly pipe is held by being sandwiched by the front-side feeding mechanism 93a, and the poly pipes rearward with respect to the front poly pipes thus held. Is fed by the rear feeding mechanism 93b to fit the front poly pipe and the rear poly pipe.

Further, when the fitting is released, the rear poly pipe which was the front poly pipe at the time of feeding is held by the front side feeding mechanism 93a, and the front poly pipe which is the rear poly pipe at the time of feeding is released. The tube is held by the rear side feeding mechanism 93b.
Then, only the rear side feeding mechanism 93b is rotationally driven in the direction opposite to the feeding direction, whereby the rear poly pipe is pulled out from the front poly pipe.

[0011]

In the poly pipe inserting device 9 thus constructed, the poly pipe feeding mechanism 93 is composed of two feeding mechanisms including a front feeding mechanism 93a and a rear feeding mechanism 93b. Therefore, the poly pipe feeding mechanism 9
3 becomes heavier. Therefore, a dedicated arm mechanism 94 or the like for supporting the poly pipe feeding mechanism 93 is required,
There is a problem that the entire poly-tube mounting device 9 becomes large-scale.

The present invention has been made in view of the above problems, and an object thereof is to provide a protective tube insertion / removal device capable of inserting / removing a poly tube with a simple structure. .

[0013]

In order to achieve the above-mentioned object, a protective tube insertion / removal device according to the present invention has a male fitting portion formed in each of the first protective tube and the second protective tube. Insert the protective tube into the outer circumference of the electric wire while inserting and connecting the female fitting section into the female fitting section, or disconnect the male fitting section from the female fitting section to connect the protective tube. While releasing, the wire is removed from the outer periphery.

This protective tube insertion / removal device comprises an electric wire mounting member, a protective tube guide member, a single protective tube drive means,
The protective tube holding means is provided in this order with respect to the electric wire into which the protective tube is inserted. That is, the electric wire mounting member is mounted, and one end of the protective tube guide member formed of an insulating material having elasticity and flexibility is connected to the electric wire mounting member.

The other end of the protective tube guide member is connected to a protective tube driving means for feeding the protective tube to the protective tube guide member and taking it out from the protective tube guide member. Then, by the protective tube holding means, the male fitting portion or the female fitting portion of the first protective tube in a state in which the protective tube driving means extends to the protective tube guide member and can be taken out, The second protective tube is held so as to face the fitting portion or the male fitting portion.

According to the protective tube insertion / removal device configured as described above, the operation of taking over the first protective tube by the protective tube driving means is performed with the second protective tube held by the protective tube holding means. The male fitting part can be inserted into and fitted to the female fitting part to connect the protective tube, and the feeding operation of the first protective tube allows the male fitting part and the female fitting part to be connected. The insertion fitting can be released and the protection tube can be connected to disconnect the protection tube. To add a protective tube drive means separately
As a result, the protective tube drive means is
Has a function that can operate only one of the drawer and drawer
One unit is enough. In addition, the second protective tube by the protective tube holding means
Is held by the protective tube drive means.
The second protective tube against movement
Ruri. Specifically, when fitting the protection tube,
As shown in Figure 1, the direction from the first protective tube to the second protective tube required for fitting
With the stopper of the movement of the second protective tube against the pushing in the direction
The protective tube holder 50 that holds the second protective tube from the rear.
use. In addition, when releasing the fitting of the protective tube,
From the second protection tube of the first protection tube required for release as shown in
As a stopper for the movement of the second protective tube against the separation of the
An opening expansion device 40 for holding the second protective tube from the front (in particular,
The stoppers 41e, f) of the device 40 are used. Furthermore
In addition, the protection tube holder 50 is for storing a plurality of protection tubes.
Also used as a holder for the opening expansion device 40,
Device for expanding a second protective tube for tube disengagement
Are also used as the
Will be formed.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described below with reference to FIGS. First, the poly pipe insertion / removal device according to the present invention (protection pipe insertion /
The aerial work vehicle K to which the removing device 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 is attached to the vertical post K5 so as to be horizontally rotatable.

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 pipe insertion / removal device 1 attached to the aerial work vehicle K constructed as described above is composed of the electric wire attachment member 1
0, a poly pipe guide member (protective pipe guide member) 20,
The poly pipe driving mechanism (protection pipe driving means) 30, the opening expansion device 40, and the poly pipe holder 50 are included. The opening expansion device 40 and the poly pipe holder 50 have the protective pipe holding means described in the claims. Further, the electric wire mounting member 10 and the poly pipe guide member 20 are disclosed in Japanese Patent Laid-Open No. 8-
Since this is a publicly known one having a configuration similar to that disclosed in Japanese Patent Publication No. 149640, etc., detailed description thereof will be omitted and only the outline will be described below.

As shown in FIG. 3, the electric wire mounting member 10 has an elongated electric wire holding portion 11 for holding the electric wire D from above and below, and extends obliquely laterally from the electric wire holding portion 11. A guide plate 12 attached, a flat plate portion 13 connecting the wire holding portion 11 and the guide plate 12, and an electric wire attachment having a conical tip so as to engage with a notch on the rear side of the guide plate 12. It is composed of a part-side electric connection part 14.

A poly-tube guide member 20 is attached to the electric wire attachment member 10 thus constructed and attached to the electric wire D. The plastic pipe guide member 20 includes a guide member side connecting portion 21 connected to the electric wire mounting portion side connecting portion 14 and a guide member main body 23 attached to the guide member side connecting portion 21.
It consists of and. At the tip of the guide member side connecting portion 21, a connecting male screw 2 to be screwed with the connecting female screw 14a is formed.
1a is formed.

The main body 23a of the guide member main body 23 is formed in a long cylindrical shape, and the main body 23a is also formed with a guide member flange 23b extending in a long shape. The guide member main body 23 is formed of an insulating material having elastic flexibility such as polyethylene. However, as long as it is an insulating material having elastic flexibility, a resin other than polyethylene, rubber or the like may be used. You can

The poly-tube guide member 2 thus constructed
The base end portion of 0 is connected to the poly-tube drive mechanism 30 as shown in FIGS. 4 and 5. The plastic pipe driving mechanism 30 has a pair of feeding rollers 31a and 31b which are arranged to face each other. Then, the flange portions P4 and P6 of the poly pipe P are sandwiched between the feeding rollers 31a and 31b, and the feeding rollers 31a and 31b are rotationally driven to feed the poly pipe P to the poly pipe guide member 20. And to collect.

The poly-tube drive mechanism 30 constructed as described above
Below the opening, the opening expansion device 40 and the opening expansion device 4 are provided.
A poly pipe holder 50 that is configured to be attachable to and detachable from 0 is provided. The opening expansion device 40 is used when the fitting of the poly pipe P is released, and the poly pipe holder 50 provided below the opening expansion device 40 includes a poly pipe P.
It is used when the fitting is performed.

First, using the poly pipe holder 50, the poly pipe P
A case of making the connection will be described. As shown in FIG. 4A, the poly pipe holder 50 is configured such that the connecting portion P2 is hooked and a plurality of poly pipes P can be held. Further, the poly pipe holder 50 is configured to be able to move the held poly pipe P upward (to the drive mechanism 30 side). And the poly pipe holder 50
In order to fit the poly pipe P held by the above into the electric wire D, first, as shown in (B), the worker M who is on the work table S uses the poly pipe gripping tool H to The plastic pipe P is lifted up and the connecting portion side flange portions P6a and P6b are held between the feeding rollers 31a and 31b.

Next, as shown in (C), the poly pipe feeding mechanism 30 is driven to rotate both the feeding rollers 31a and 31b to move the poly pipe P upward. And FIG.
As shown in (D), after the poly pipe P is moved to above the other poly pipe P, the poly pipe holder 50 is rotated and the poly pipe (first protective pipe) P is fed out upward. Another poly pipe (second protection pipe) P is moved to the lower side of ′.

Thereafter, as shown in (E), the feeding rollers 31a and 31b are reversed to move the poly pipe P'downward to fit the poly pipe P held by the poly pipe holder 50. Then, as shown in (F), by rotating both feeding rollers 31a and 31b again, the poly pipe P'can be delivered to the poly pipe guide member 20 in a state of being fitted to the poly pipe P. The delivered poly pipe P is inserted into the outer periphery of the electric wire D by the poly pipe guide member 20 and the electric wire mounting member 10 to protect the electric wire D. Thereafter, by repeating the operations of (D) to (F), the fitting protrusion P3 'of the poly pipe P'is inserted and fitted in the fitting groove P5 of the poly pipe P as shown in FIG. 13 (A). Thus, the poly pipes P can be connected.

Next, the case where the fitting of the fitted poly pipes P ', P is released by using the opening expansion device 40 will be described with reference to FIGS. The aperture expansion device 40 is
The opening claw 41 is formed of a pair of L-shaped claw members 41a and 41b. Both claw members 41
The a and 41b have a space through which the brim P4 can pass, and are pivotally supported in the left and right directions with hinges 43a and 43b as fulcrums. Then, as described above, the poly pipes P ', P
7 is held in the state of being opened left and right as shown by the chain line in FIG. 7, so that the claw members 41a, 41b and rollers 42a, 42b are not brought into contact with the fitted poly pipe P. To

When the fitted poly pipes P'and P are to be released, first, as shown in FIG. 7, the opening claw 41 is rocked from an open state shown by a chain line to a closed state (release state) shown by a solid line. To move. Then, the worker M uses the poly pipe gripping tool H to fix the poly pipe P attached to the electric wire D.
After passing through the poly pipe guide member 20, the poly pipe guide member 20 is moved to the poly pipe driving mechanism 30. Thereafter, the main body side flange portion P4 of the poly pipe P is sandwiched between the feeding rollers 31a and 31b, and the driving roller 31 is rotated in the reverse direction so that both opening claw rollers 42a and 42b and both claw members 41a are formed as shown in FIG. , 41b. When the fitting of the poly pipes P ′ and P is released, the poly pipe holder 50 is removed from the opening expansion device 40 as shown by the chain line in FIG.

When the driving roller 31 is rotated in the reverse direction while the main body side flange P4 is sandwiched between the two opening claw rollers 42a and 42b and the two claw members 41a and 41b, as shown in FIGS. As shown in, the connecting portion side brim P6 is located between the opening claw rollers 42a and 42b, and pushes the opening claw 41 to the left and right. After that, when the driving roller 31 is further driven in the reverse direction, as shown in (B), the main body side flange portion P of the poly pipe P ′ fitted to the poly pipe P is shown.
4'is clamped by the aperture expanding device 40.

When the connecting portion P2 of the lower poly pipe P has moved to a position below the opening claw 41, the reverse drive (take-up drive) of the drive roller 31 is stopped. After that, by driving the drive roller 31 in the normal direction (feeding out), the main body side flange portion P4 'of the upper plastic pipe P'is held by the opening claw 41 as shown in FIGS. The connection side flanges P6a and P6b of the side poly pipe P are pushed open.

After the connecting portion side flanges P6a and P6b of the lower poly pipe P are pushed open in this way, the poly pipe feeding mechanism 30 is fed to move the upper poly pipe P'upward. To move. Here, if the connecting side flanges P6a and P6b of the lower poly pipe P are simply opened, the upper poly pipe P '
Since the fitting between the lower poly pipe P and the lower poly pipe P is not completely released, when the upper 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 (held by the opening expansion device 40). As a result, only the upper poly pipe P ′ moves upward and the upper poly pipe P ′ is moved.
Since the fitting between the lower poly pipe P and the lower poly pipe P is completely released, the connection between the lower poly pipe P and the upper poly pipe P ′ can be released.

When the poly pipes P'and P are released from each other in this manner, the lower poly pipe P falls by its own weight, but the pawl members 41a and 41b are provided with the pawl rollers 41c and 41d. Therefore, the opening claw 41 causes the brim portion P on the connecting portion side.
Even when 6a and P6b are spread, the lower poly pipe P smoothly drops.

In the above embodiment, the case where the poly pipe drive mechanism 30 is configured to have the pair of feeding rollers 31a and 31b has been described. However, the present invention is not limited to this, and the poly pipe is not limited to this. It suffices that P can be moved in the feeding direction (upward) and in the take-up direction (downward) opposite to the feeding direction.

Further, the protective tube holding means does not have to be composed of the opening expanding device 40 and the poly tube holder 50 as described above, and the structure thereof is not limited to the above structure. That is, when the poly tube P (first protective tube) P ′ is returned to the fitting of the poly tube P (when it is pushed toward the poly tube P after), the poly tube after (the second protective tube) It suffices that the pipe P does not move, and that when the poly pipe P (first protective pipe) P is pulled in order to release the fitting of the poly pipe P, the poly pipe P (2) Protection pipe) It is sufficient that P does not move.

[0037]

As described above, the protective tube insertion / removal device of the present invention allows the first protective tube and the second protective tube to be fitted to each other in order to insert / remove the protective tube into / from the electric wire. In order to release the fitting, the protection tube drive means pushes or pulls the first protection tube against the second protection tube, but at this time, the second protection tube is protected so as not to move. It is held by the tube holding means. As a result, the protective tube is
Since only one protective tube driving means for taking out is required and the protective tube driving means is used for fitting and releasing the protective tube, the protective tube inserting / removing device can be easily and inexpensively. Can be manufactured. Further, since the weight of the device can be reduced, the device can be easily attached to an aerial work vehicle having a conventional sub-boom.

[Brief description of drawings]

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

FIG. 2 is a side view of an aerial work vehicle to which the protective tube insertion / removal device is attached.

FIG. 3 is a perspective view of an electric wire mounting member and a protective tube guide member in the protective tube inserting / removing device.

FIG. 4 is a schematic front view of a protection tube drive mechanism and a protection tube holding device at the time of fitting operation in the protection tube insertion / removal device.

FIG. 5 is a schematic front view of a protection tube drive mechanism and a protection tube holding device at the time of fitting operation in the protection tube insertion / removal device.

FIG. 6 is a side view of an opening expansion device and a protection tube holding device in the protection tube insertion / removal device.

FIG. 7 is a view of the above-mentioned opening expansion device and protective tube holding device.
FIG. 7 is a view on arrow VII in FIG.

FIG. 8 is a front view showing an opening expansion device at the time of a release operation in the protective tube insertion / removal device.

FIG. 9 is a partially enlarged view of the opening expansion device.

FIG. 10 is a cross-sectional view taken along the line X in FIG. 8A of the opening expansion device.

FIG. 11 is a cross-sectional view taken along line XI-XI of FIG. 9 of the opening expansion device.

FIG. 12 is a front view and a side view of a poly pipe.

FIG. 13 is a cross-sectional view taken along the line XIII-XIII in FIG. 12 of this poly tube.

14 is a cross-sectional view of the above poly tube taken along line XIV-XIV in FIG.

FIG. 15 is a side view of a conventional poly-tube inserting device.

[Explanation of symbols]

1 Poly tube insertion / removal 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)

Front Page Continuation (72) Inventor Takashi Mori 10-152 Yamashita, Ageo-shi, Saitama, Saitama Prefecture 10 At Aichi Corporation Ageo factory (72) Inventor Keiichi Yokoyama 10 shares, 1152 Yamashita, Ageo-shi, Saitama Prefecture Aichi Corporation Ageo Factory (72) Inventor Fumio Watanabe 10-2115 Yamashita 1152 Ryoke, Ageo City, Saitama Prefecture Aichi Corporation Ageo Factory (56) Reference JP-A-8-149640 (JP, A) JP Hei 8-149641 (JP, A) Actual development Sho 63-109507 (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
Insert the male fitting part into the female fitting partLetConnected
Inserting the protective tube into the outer circumference of the electric wire arranged on the utility pole
And a protective tube insertion / removal device for removing, An electric wire attachment member attached to the electric wire, One end was connected to the electric wire mounting member and had elastic flexibility
A protective tube guide member formed of an insulating material,The The other end of the protective tube guide memberToConnect the above-mentioned protective tube
Extending to protective tube guide member and said protective tube guide
Pick up from the memberOneProtective tube drive means,The Retracting to the protective tube guide member by the protective tube drive means.
Of the first protection tube in a state where it can be taken out and taken over.
The male fitting part or the female fitting part is fitted with the female part of the second protective tube.
Hold the second protective tube facing the male part or male fitting part
With protective tube holding meansEquipped with,Further, the protection tube drive means is For protection tube holding means
With the second protective tube held, the protective tube driving hand
To perform the take-up operation of the first protection tube by steps
Insertion fitting of the male fitting part and the female fitting part in the protective tube
To perform the feeding operation of the first protective tube.
Release the fitting of the protective tubeI The holding of the second protective tube by the protective tube holding means is
For picking up and feeding out by the protective tube drive means
To prevent the second protective tube from moving, Characterized by
A protective tube insertion / removal device. 2. The protective tube holding means fits a protective tube.
In the direction from the first protective tube to the second protective tube
To hold the second protective tube from the rear against pressing
A protective tube storage holder is used to release the protective tube
Pulling the first protection tube from the second protection tube
To hold the second protection tube from the front against the separation
What is provided by the use of an aperture dilator
The protective tube insertion / removal device according to claim 1.