JP3378765B2 - Protection tube fitting 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 fitting device for inserting a protective tube for protecting an electric wire by covering the outer circumference of the electric wire arranged on a utility pole.

[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. 9 to 11, the poly pipe P comprises a main body 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. 12, 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 side feeding mechanism 93b to fit the rear poly pipe to the front poly pipe.

In this way, when a plurality of poly pipes P are fitted, the poly pipes P ', P to be fitted later are put in the poly pipe storage bag PB, and the winch provided on the vertical post V is placed. This poly tube storage bag PB is lifted up to the vicinity of the work table S by using. Then, the worker who has boarded the work table S takes out the poly pipe P from the poly pipe storage bag PB using a poly pipe gripping tool (not shown) and carries it to the poly pipe feeding mechanism 93.

[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. Also, every time the poly pipe P is fitted, the worker needs to take out the poly pipes P from the poly pipe storage bag PB one by one using the poly pipe gripping tool, which increases the labor of the worker. There was also a problem that work efficiency was not good as well as being connected to.

The present invention has been made in view of such a problem, and can reduce the labor of an operator with a simple structure and can perform a quick insertion work into an electric wire. The purpose is to provide a fitting device for a protective tube.

[0013]

A protective tube fitting device according to the present invention for achieving the above object includes a first protective tube and a second protective tube for inserting a protective tube into an outer circumference of an electric wire. The male fitting portions respectively formed on the pipe and the female fitting portion are inserted and fitted and connected. This fitting device is composed of one protection tube driving means and a protection tube holding means capable of storing a plurality of protection tubes . The protective tube driving means is configured to be able to move the first protective tube forward and backward in the axial direction, and the protective tube holding means is in a state where the protective tube driving means can move axially. The male fitting part of the first protection tube of, the female fitting part or the male fitting part of the protection tube on the base,
Hold the second protection tube axially rearward of the first protection tube so that it faces the female or male fitting section of the second protection tube.
It

According to the protective tube fitting device constructed as described above, the protective tube drive means moves the first protective tube axially rearward while the second protective tube is held by the protective tube holding means. The protective tube can be fitted by moving.

In the protective tube fitting device of the present invention, the protective tube holding means can move the second protective tube axially forward, and the first protective tube can be axially moved by the protective tube drive means. It is preferable that the second protection tube has a holding stopper for holding the second protection tube so that the second protection tube does not move axially backward when the second protection tube is fitted to the second protection tube.

With such a structure, if the first protective tube located in front of the second protective tube held by the protective tube holding means is moved backward, the first protective tube and the second protective tube It can be fitted with a protective tube. Then, if the first protective tube is moved forward after the fitting, the second protective tube held by the holding stopper can also be moved forward together.

Further, the holding stopper holds the second protective tube by holding the second protective tube by preventing the second protective tube from moving axially forward and the axial direction rearward of the second protective tube. It is preferable to have a structure that can swing between the position and the position.
With such a configuration, it is possible to allow the forward movement of the second protective tube and prevent the backward movement thereof with a simple configuration. Further, by virtue of the swingable structure, the second protection tube having a large outer diameter can be held by slightly swinging the holding stopper toward the moving position.

It is to be noted that the second member is formed in a cylindrical shape having an annular cross section having an opening portion at one place, and has a pair of brim portions projecting radially outward from both end portions of the opening portion and extending in the longitudinal direction. When the protective tube is used, it is preferable that the protective tube holding means is composed of a holding member, a rotation driving means, and a rotation positioning means.

A plurality of holding members are arranged on the same circumference and hold a plurality of second protective tubes, and the rotation driving means horizontally rotates the holding members with the center of the circumference as the center of rotation for each second protection tube. The female fitting part or the male fitting part of the protective tube is made to face the male fitting part or the female fitting part of the first protective tube. Then, the rotational positioning means abuts the flange portion of the second protective tube held by the holding member at the position where the female fitting portion and the male fitting portion face each other, and prevents the holding member from rotating.

With this structure, when the second protection tube fitted with the first protection tube is moved upward until it is disengaged from the holding member, and then the holding member is rotated, the next second protection tube is moved. At the position where the female fitting portion and the male fitting portion of the first protection tube face each other, the rotation positioning means comes into contact with the brim portion of the next second protection tube, and the rotation of the holding member stops.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION A preferred embodiment of the present invention will be described below with reference to FIGS. First,
An aerial work vehicle K to which a poly pipe insertion device (protective pipe fitting device) 1 using the poly pipe holding device according to the present invention is attached will be described. In the aerial work vehicle K, as shown in FIG.
A retractable boom K3 is attached to the swivel base K2 so as to be able to rise and fall relative to the swivel base K2. 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 comprises an electric wire attaching member 10 and
The poly pipe guide member 20, a poly pipe feeding mechanism (protection pipe driving means) 30, an opening expansion device 40, and a poly pipe holder (protection pipe holding means) 50 are included. Since the electric wire mounting member 10 and the poly-tube guide member 20 are publicly known ones configured in the same manner as disclosed in Japanese Unexamined Patent Publication No. 8-149640, detailed description thereof will be omitted. However, only the outline will be described below.

The electric wire attachment member 10 is attached to the electric wire D while being sandwiched from above and below, and the polytube 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 driving mechanism 30 is
A pair of feeding rollers 31a, 31b arranged to face each other.
have. And both feeding rollers 31a, 31b
The flange portions P4 and P6 of the poly pipe P are sandwiched between the plastic pipe P and the feeding rollers 31a and 31b are rotationally driven to feed the poly 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 to release (separate) the fitting of the poly pipe P, and the poly pipe holder 50 provided below the opening holding device 40.
Is used when fitting the poly pipe P.

Here, the poly pipe holder 50 will be described with reference to FIGS. The poly pipe holder 50 includes a poly pipe holding device 50 for the outer cover 51 and the opening device 40.
And a rotating device 52 for horizontally rotating the
... arranged radially between the guides 53, 53, and drop-out prevention stoppers 54, 54 arranged between the guides 53, 53, and the holding portion 46 of the opening holding device 40.
The rotary positioning stopper holding member 55 is configured to be detachable and holds the rotating device 52, and the rotary positioning stopper 56 attached to the rotary positioning stopper holding member 55.

The outer cover 51 is formed in a cylindrical shape having an octagonal plane shape and open at the top and bottom, and a rotating device 52, a guide 53, and a stopper 54 are disposed in the inner space. .

The rotating device 52 has a mounting shaft 52a which is detachably attached to the rotary positioning stopper holding member 55.
An upper spring fixing member 52c rotatable with respect to the mounting shaft 52a via a bearing 52b, a lower spring fixing member 52d attached to a lower end portion of the mounting shaft 52a, and an upper end portion of the upper spring fixing member 52c. The lower spring fixing member 5 is fixed at the lower end.
A coil spring 52e fixed to 2d and an outer cylinder 5 having an upper spring fixing member 52c attached to the inner peripheral surface thereof.
2f. A plurality of poly pipes P held by the poly pipe holder 50 are provided below the outer cylinder 52f.
A plurality of poly tube bag hooks 52g to which a poly tube bag (not shown) configured to cover the outer periphery of the bag can be hung are attached.

In the rotating device 52 thus constructed, the mounting shaft 52a and the lower spring fixing member 52d are fixed to the rotation positioning stopper holding member 55, and the mounting shaft 52a and the lower spring fixing member 52d are connected to the upper spring fixing member 52c. Also, it is configured to be rotatable with respect to the outer cylinder 52f. However, the upper spring fixing member 52c and the lower spring fixing member 52d are
Since they are connected by the coil spring 52e, when the outer cylinder 52f is rotated to the right or left with respect to the mounting shaft 52a, the reaction force of the coil spring acts in the direction opposite to the rotating direction. Therefore, when no force is applied to the outer cylinder 52f, the outer cylinder 52f is held at a predetermined position with respect to the mounting shaft 52a.

A plurality of guides 53, 53 ... Are radially arranged on the outer peripheral surface of the outer cylinder 52f. Guide 53
A support plate 53a fixed to the outer cylinder 52f, and the support plate 5
It is composed of a cylindrical guide body 53b extending upward from the tip of 3a, and a brim guide 53c extending inward (on the side of the opening holding device 40) from the side surface of the guide body 53b. There is. The guide body 53
The upper and lower ends of b are formed in a conical shape. 10 guides 53, 53 ... Are arranged in the poly pipe holder 50.

The guides 53, 53 ...
Drop-out prevention stoppers 54, 54 ... Are disposed between the spaces. The drop-out prevention stopper 54 is the left stopper member 54a.
And the right stopper member 54b and the left and right stoppers 5
4a and 54b are pivotally supported, and a pivot stopper 54d that prevents the left and right stoppers 54a and 54b from pivoting.

The left and right stoppers 54a and 54b are formed so that their cross-sectional shapes are substantially semi-circular, and the curved portions thereof are located below. Left and right stoppers 54a, 54
The left and right end faces of b are formed so that the outer periphery of the main body P1 of the poly pipe P can come into contact with the outer faces. The drop-out preventing stoppers 54, 54 ... Having such a configuration are arranged between the guides 53, 53 ..., and hold the poly pipe P guided by the guides 53 from both sides.

That is, the drop-out preventing stoppers 54, 54 configured as described above are located on the left and right sides of the poly pipe P, respectively, as shown in FIG. 8 (A) when no force is applied. Left and right stopper members 54a, 54b, 54
The upper surfaces of a and 54b are held horizontal. As a result, the flange portion of the connecting portion P2 is caught by the upper surface of the left stopper member 54a located on the right side of the poly pipe P and the upper surface of the right stopper member 54b located on the left side of the poly pipe P, and the poly pipe P It is held by the tube holder 50.

Drop-out prevention stopper 5 having such a structure
According to 4, according to the action of the swing stopper 54d, the swinging operation of the left and right stopper members 54a and 54b in the downward direction is restricted, but the swinging operation in the upward direction is allowed. For this reason, when the connecting portion P2 passes through the drop-out prevention stopper 54 when the poly pipe P is fed out from below the drop-out prevention stopper 54, the left and right stopper members 54a and 54b respectively swing upward. Accordingly, even if the outer diameter of the connecting portion P2 is larger than that of the main body portion P1, the connecting portion P2 can easily pass through the drop-out prevention stopper 54, so that the poly pipe P can be easily extended from the bottom to the top. At the same time, the poly pipe P can be held at the step between the main body portion P1 and the connection portion P2.

In the drop-out preventing stopper 54 constructed as described above, as shown in FIG. 8B, the outer diameter of the main body portion P1 "of the poly pipe P" to be held is equal to that of each of the left and right stopper members. If the distance W between the left and right end faces of the adjacent left and right stopper members 54a and 54b when the horizontal direction of 54a and 54b is horizontal (see (A)), that is, the poly pipe P ″ having a larger outer diameter than the poly pipe P Even can be held.

In the case of holding such a poly pipe P ", the poly pipe P" is drawn out from below the drop-out preventing stopper 54 like the above-mentioned poly pipe P, so that the connecting portion P2 "is formed.
Not only when passing through the main body P1 ″,
The left and right stopper members 54a, 54b swing upward and the distance W between the left and right stopper members 54a, 54b increases. Therefore, in the step between the main body portion P1 ″ and the connection portion P2 ″,
The poly pipe P ″ can be held in a state where the left and right stopper members 54a and 54b are slightly swung upward.

When the poly pipe P ″ having a large outer diameter is held, the inner diameter of the poly pipe P ″ also becomes large. Therefore, the adapter 57 is attached to the outer circumference of the guide main body 53b and the outer diameter of the guide main body 53b. Is set so that the center of the poly pipe P does not deviate from the guide 53.

The rotation of the poly pipe holder 50 is performed by a rotating device 52. That is, the rotating device 52 holds a predetermined position by the biasing force of the coil spring 52e incorporated as described above. Then, the outer cover 51 is attached to the outer cylinder 52f via the stoppers 54, 54.
Since the outer cover 51 is rotated, when the outer cover 51 is rotated, the coil spring 52 is rotated in the direction opposite to the rotating direction.
The reaction force of e acts. Therefore, when the holding force of the outer cover 51 is released after rotating the outer cover 51, the outer cover 51, the guides 53, 53, ... And the dropout prevention stoppers 54, 54.

The rotation positioning stopper 56 stops the rotation of the poly pipe holding device 50 by the rotation device 52. The rotary positioning stopper 56 includes a stopper body 56a, an upper link member 56b, a lower link member 56c, and a spring 56d. The upper link member 56b and the lower link member 56c have their respective base ends pivotally supported by the rotation positioning stopper holding member 55 so as to be vertically swingable, and the stopper main bodies 56d are pivotally supported at their respective distal ends. Parallel links are formed.

As a result, the stopper body 56a can be moved up and down without moving in the left-right direction, but it is swung upward by the urging force of the spring 56d (shown in the figure). State). In addition,
In such a state of swinging upward, the stopper main body 56a contacts the connecting portion side flange portion P6 of the poly pipe P that is held. Then, in the state of swinging downward, the stopper body 56a is located inside (the rotation positioning stopper holding member 55 side) of the connecting portion side flange portion P6 of the poly pipe P being held, and the stopper body 56a is It does not interfere with the poly pipe P.

The rotational positioning stopper 56 thus constructed is arranged at a position leftward from the center of the poly pipe holding device 50 as shown in FIG. When stopping the rotation of the poly pipe holding device 50,
As shown in FIG. 5, the rotation positioning stopper 56 is held by a locking member (not shown) in a state of being swung upward, and the stopper body 56 a is connected to the poly pipe P held by the poly pipe holding device 50. The side flange portion P6 is brought into contact with.

Therefore, in the poly pipe holder 50 constructed as described above, the poly pipes P, P are attached to the poly pipe holder 50.
To hold the ..., First, after hooking the hook F provided at the tip of the wire W on the rotation positioning stopper holding member 55 attached to the upper end portion of the attachment shaft 52a, the rotation positioning stopper holding member 55 is opened. The holding device 40 is removed from the holding portion 46. After that, the wire W is unwound, the poly pipe holder 50 is lowered to the vicinity of the ground, and the drop-out prevention stopper 54 is pushed open from below the drop-out prevention stopper 54 to guide the guides 53, 5 one by one.
The poly pipes P, P ... Are inserted around the outer periphery of 3.

After holding the ten poly pipes P, the wire W is wound and the poly pipe holder 50 is pulled up, and the mounting shaft 52a is attached to the rotary positioning stopper holding member 55 again. At this time, the rotation positioning stopper 56 is swung downward. After the mounting shaft 52a is firmly mounted, the poly pipe holder 50 is rotated rightward once (as viewed in plan view, leftward) as indicated by the chain line arrow R1 in FIG. After that, the rotation positioning stopper 56 is rocked by rocking upward,
The flange portion P6 on the connection portion side is brought into contact with the stopper body 56a, and the poly pipe holder 50 is held in the state of being rotated once to the right.

A case where the poly pipe P or the like is fitted by using the poly pipe holder 50 constructed as described above will be described.
When fitting the poly pipe P or the like, the opening claw 41 of the opening holding device 40 is swung upward and leftward as shown by a chain line in FIG. 6 so as not to interfere with the poly pipe fed out. .

As shown in FIG. 3 (A), the poly pipe holding device 50 is constructed so that the connecting portion P2 can be hooked to hold a plurality of poly pipes P.
It is configured so that the held poly pipe P can be moved upward (to the poly pipe driving mechanism 30 side). Therefore,
When fitting the poly pipe P held by the poly pipe holder 50 and feeding it out to the electric wire D, first, as shown in (B), the worker M who is on the workbench S uses the poly pipe gripping tool H. And lift up one poly pipe P to connect the joint side flanges P6a, P6.
b is sandwiched between the feeding rollers 31a and 31b.

Then, as shown in (C), the poly pipe driving mechanism 30 is driven to rotate both feeding rollers 31a and 31b to move the poly pipe P upward (axially forward). Then, when the main body side flange P4 moves away from the stopper main body 56a due to the movement of the poly pipe P, the poly pipe P moved upwards.
The poly pipe holder 50 rotates until the connecting portion side flange P6 of the poly pipe P, which is held next to, comes into contact with the stopper body 56a. In this way, the poly pipe P is connected to the stopper body 5
In the state of being in contact with 6a, the central axis of the upper poly tube P'and the central axis of the lower poly tube P (the central axes of the upper guide 45 and the lower guide 53) are located on the same line. Then, as the poly pipe holder 50 is rotated by the rotating device 52, the poly pipe P is moved to a position above another poly pipe P as shown in FIG. 4D, and then the poly pipe P is extended upward. The other poly pipe P moves below the pipe P '.

Thereafter, as shown in (E), the feeding rollers 31a and 31b are reversed to move the poly pipe P downward (axially rearward), so that the poly pipe P held by the poly pipe holder 50 is removed. Mating. Then, as shown in (F), by rotating both feeding rollers 31a and 31b again, the poly pipes P'and P can be fed to the electric wire D in a fitted state. The unwound poly pipe P is attached to the outer periphery of the electric wire D to protect the electric wire D. Thereafter, by repeating the operations of (D) to (F), the fitting protrusion P of the poly pipe P ′ is fitted in the fitting groove P5 of the poly pipe P as shown in FIG. 3 (A).
By fitting 3 ', each poly pipe P etc. can be connected.

The protective tube holding device according to the present invention is not necessarily limited to the above structure. For example, the rotation of the poly pipe holder in the poly pipe holder does not need to be configured to be automatically performed when the poly pipe held as described above comes out. You may comprise so that a poly pipe holding part may be rotated manually. Further, even in the case of rotating the poly pipe holding portion using the rotating device, the drive source may be a motor or the like instead of the coil spring as described above.

Further, it is not always necessary to provide a rotation positioning stopper for stopping the rotation of the poly pipe holder.
Even when it is provided, it is not necessary to use the flange portions P4 and P6 of the poly pipe P.

[0051]

As described above, the protective tube fitting device of the present invention is a male fitting of the first protective tube in a state where the first protective tube can be moved in the axial direction by the protective tube driving means. The female fitting portion or the female fitting portion faces the female fitting portion or the male fitting portion of the second protective tube, and the protective tube holding means holds the second protective tube.
Then, with the second protective tube held by the protective tube holding means, the first protective tube is moved axially rearward by the protective tube driving means to insert the male fitting portion and the female fitting portion in the protective tube. The mating is done.

Thus, only one protection tube driving means for moving the protection tube for fitting is required, and further, the protection tube driving means can also be used as a driving means for feeding the protection tube to the electric wire. A protective tube fitting device can be obtained at a low cost with a simple configuration.

Further, the protection tube holding means is provided with a holding stopper capable of moving the second protection tube forward in the axial direction and holding the second protection tube so as not to move backward during fitting. It is preferable that, by having such a configuration, the holding position of the second protection tube in the fitting device of the protection tube, the fitting position and the forward feeding position can be positioned on the same axis, The protective tube fitting device can be made compact.

Here, the holding stopper holds the second protective tube by preventing the second protective tube from moving axially forward and the second protective tube axially rearward. It is preferable that the structure is swingable between the holding position and
With such a structure, the second protection tube can be allowed to move forward and can be prevented from moving backward with a simple structure, and further, the holding stopper can be slightly swung to the movement position side. By doing so, even a second protective tube having a large outer diameter can be held. Therefore, even if protective tubes having different outer diameters are fitted, it is not necessary to prepare a dedicated protective tube holding means, so that the protective tube fitting device can be manufactured at low cost.

It is to be noted that the second member is formed in a cylindrical shape having an annular cross section having an opening portion at one place, and has a pair of brim portions protruding in the outer diameter direction from both end portions of the opening portion and extending in the longitudinal direction. When using a protection tube, a plurality of holding members are arranged on the same circumference to hold a plurality of second protection tubes, and the rotation driving means horizontally rotates the holding member with the center of the circumference as a rotation center. It is preferable that the female fitting portion or the male fitting portion of each second protection tube is configured to face the male fitting portion or the female fitting portion of the first protection tube. It is preferable that the female fitting portion and the male fitting portion contact the brim portion of the second protective tube held by the holding member at a position where they face each other to prevent rotation of the holding member.

With this configuration, when the second protection tube fitted with the first protection tube is moved upward until it is disengaged from the holding member, and then the holding member is rotated, the next second protection tube is moved. At the position where the female fitting portion and the male fitting portion of the first protection tube face each other, the rotation positioning means comes into contact with the brim portion of the next second protection tube, and the rotation of the holding member stops. Therefore, with a simple structure, the female fitting portion and the male fitting portion can be reliably opposed to each other at the position where the second protective tube is held.

[Brief description of drawings]

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

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

FIG. 3 is a schematic front view of a protective tube drive mechanism and a protective tube holding device at the time of a fitting operation in the protective tube fitting 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 fitting device.

FIG. 5 is a side view of the protective tube fitting device.

FIG. 6 is a view of the fitting device of the protective tube taken along the line VI in FIG.

7 is a VII arrow view of FIG. 6 of the protective tube fitting device.

FIG. 8 is a view of the fitting device for the protective tube taken along the line VIII in FIG. 7.

FIG. 9 is a front view and a side view of a poly pipe.

10 is a cross-sectional view taken along line XX in FIG. 9 of this poly tube.

FIG. 11 is a sectional view of the poly tube taken along line XI-XI in FIG. 9.

FIG. 12 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 holding 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 No. 10 Aichi Corporation Ageo Factory (72) Inventor Fumio Watanabe 10 1152 Yamashita, Ryoke, Ageo City, Saitama Prefecture Aichi Corporation Ageo Factory (56) Reference JP-A-8-149641 (JP, A) ) JP-A-5-142432 (JP, A) JP-A-8-65843 (JP, A) Actual development 63-109507 (JP, U) Actual development Sho-58-57221 (JP, U) (58) Field (Int.Cl. ⁷ , DB name) H02G 1/02

Claims (3)

(57) [Claims] 1. A first protective tube having a male fitting portion formed at one end and a female fitting portion formed at the other end, and insertable into the female fitting portion of the first protective tube at one end. And a second protective tube having a female fitting section into which the male fitting section of the first protective tube can be inserted, and the male fitting section A fitting device for a protection tube that inserts and fits into a fitting portion to connect the first protection tube and the second protection tube, wherein the first protection tube can be moved forward and backward in the axial direction. One possible protection tube drive means, and the male fitting portion or the female fitting portion of the first protection tube in a state where the first protection tube can be moved in the axial direction by the protection tube driving means. The second protective tube is opposed to the female fitting portion or the male fitting portion of the second protective tube, and the second protective tube is attached to the first protective tube.
Held axially rearward, and consists of a proof <br/> Mamorukan holding means capable of storing a plurality of protective tubes, while being held with the second protective tube to the protective tube holding means, said protective tube The first protection tube is moved axially rearward by the driving means to insert and fit the male fitting portion and the female fitting portion in the protection tube , and the protection tube holding means is further provided with the second protection member. Axial tube
The protective tube can be moved forward
The first protection tube is moved rearward in the axial direction by the driving means.
When the second protective tube is fitted with the second protective tube,
Hold the second protection tube so that it does not move axially backward.
A fitting device for a protective tube , which has a holding stopper . 2. The second protection tube, wherein the holding stopper prevents the second protection tube from moving axially forward and prevents the second protection tube from moving axially rearward. The fitting device for a protective tube according to claim 1, wherein the fitting device is swingable between a holding position for holding the protective tube and the holding position. 3. A pair of second protection tubes, each of which is formed in a cylindrical shape having an annular cross section having an opening at one location, and which projects from both ends of the opening in the outer radial direction and extends in the longitudinal direction. A holding member having a brim portion, wherein the protection tube holding means is provided in a plurality on the same circumference and holds a plurality of the second protection tubes; and the holding member with the center of the circumference as a rotation center. Rotation drive means for horizontally rotating the female fitting portion or the male fitting portion of each of the second protective tubes to face the male fitting portion or the female fitting portion of the first protective tube, and the female Rotation positioning means for preventing rotation of the holding member by contacting the brim portion of the second protective tube held by the holding member at a position where the fitting portion and the male fitting portion face each other. Which of claims 1 or 2 is characterized in that
The fitting device for the protective tube according to item 1 .