JPH071968B2 - Vertical flexible tube cable attachment / detachment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION I. Objectives of the Invention (1) Field of Industrial Application The present invention uses a vertically split flexible tube that is vertically split to protect a cable strand such as a communication cable. The present invention relates to a cable attachment / detachment device for a vertically split flexible tube for covering and removing the vertically split flexible tube from the cable wire.

(2) Conventional Technology Conventionally, a communication cable or the like is laid so that a pipeline is buried in the ground or the like so as to run therethrough. Then, as shown in FIG. 18, work manholes are provided at arbitrary points of the pipeline for cable laying connection, repair work, and for emergency use.

In this manhole, workers perform repair work on the wall surface of the manhole itself, remodeling work, attachment of cables, etc., connection, removal work, etc., but the cables are exclusively protected and external damage such as tears or cracks is given to the cables. The pipe line for this purpose is not continuous in this manhole, so that the worker inadvertently damages the cable skin during the above-mentioned work in the manhole, and in particular, prevents damage caused by bites such as mice. Therefore, as shown in FIG. 19, a vertically split flexible tube made of a hard vinyl tube or the like is used, in which a part of the cut end is overlapped, or the cut end is abutted.

When attaching or removing this vertically split flexible tube to or from the cable, the operator manually pushes open the vertically cut end of the flexible tube to protect it in advance from the open gap. The cable with the cover attached is gradually pulled out, or conversely, the flexible tube is pressed against the cable side to adhere to or detach from the cable.

(3) Problems to be Solved by the Invention However, in the above-described conventional mounting / removing method, since the vertically split flexible tube is formed from the hard vinyl tube as described above, the overlapping portion or the abutting portion is not formed. Pushing work requires a great deal of force, and the point of action of the finger force at the time of first pushing open the overlapped portion or butt portion that is in close contact with each other is not fixed, so the work efficiency is relative to the labor. There was a problem saying that was bad. Further, in the work of removing the flexible tube, a protective cover such as a vinyl tape is wrapped around in advance, so that the protective cover is required and it is necessary to spend labor for the winding work. Further, since the contracting force of the flexible tube is directly applied to the cable during the work, there is a problem that the cable may be deformed or damaged, and the line may be disturbed by the lateral pressure.

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to insert a cable into which a vertically split flexible tube is to be mounted into a gap between V-shaped guide rails and to vertically split the same. By engaging the receiving edges of the guide rails with both cut ends of the flexible tube and pulling it toward the opening part while gripping the grip part, the cable of the flexible tube can be continuously and efficiently performed by light work. Can be installed and removed, and without the need for a protective cover for protecting the cable, it is also possible to prevent the deformation, damage, and line failure of the cable due to the contraction force of the flexible tube. It is an object of the present invention to provide a cable attachment / detachment device for a vertically flexible tube.

II. Structure of the Invention (1) Means for Solving the Problems In order to achieve the above object, the present invention is directed to a parallel rail portion 22 provided substantially in parallel with a gap 24 in the middle, and the parallel rail portion 22. Opening part 18 extended to part 22 and connected close to each other
And an expanding end portion extended to the opposite end side of the opening portion 18
26, and a guide rail 12 having a substantially V-shape including, and the expanding end portion 26 is connected and detachably engaged with the expanding end portion 26, and the cable C is inserted into the gap during the connection. A cable receiving portion 14 that locks a part of the cable C is provided, and a receiving edge 20 that engages with both cut end portions of the vertically split flexible tube P is provided on the outer surface side of the guide rail 12. Further, the opening portion 18 is provided with a grip portion 16, the cable C is inserted into the gap 24, and the grip portion 16 is gripped in a state where the expanding end portion 26 is coupled and pulled toward the opening portion 18. The vertical flexible tube P is attached or detached to or from the cable C while the vertical flexible tube P is attached or detached.

Further, when the cable C is inserted into the gap 24, the cable C cooperates with the cable receiving portion 14 to bend the cable C and guide the detachment or attachment of the vertically split flexible tube P from the cable C. The middle receiving portion 34 may be formed.

Further, the V-shaped guide rail 12 may be formed in a slightly curved shape in the longitudinal direction, whereby the cable C of the flexible tube P is formed.
The guide rail 12 can be easily towed when it is attached to or detached from the guide rail 12.

Further, the receiving edge 20 of the guide rail 12 may be formed in a U-shaped frame, and the lower projecting piece 32 may be formed to be inclined obliquely downward, which allows the entire guide rail to be pulled. It will be easy.

Further, the cable receiving portion 14 includes the idler roller 42 inserted through the shaft 40 provided so as to connect the expanded end portion 26 of the guide rail 12, so that the cable receiving portion and the cable come into contact with each other. The frictional force is reduced to make the towing work easier and prevent the cable jacket from being worn and damaged.

(2) Action of the invention When the dismounting work is performed, the cable is set so as to penetrate from the diagonally lower right to the diagonally upper left in the gap of the parallel rails, and then the shaft of the idler roller is fitted in the fitting frame. To prevent the shaft from being pulled out from the fitting frame by locking. Then, the operator pushes the overlapping portion or the abutting portion of the end portion of the vertically split flexible tube into contact with the opening portion of the guide rail through the gap between the end portions formed while the operator pushes it open. At this time, both cut end portions of the flexible tube engage with the inside of the receiving edge. Then, when pulling toward the opening part while gripping the grip part, the opening part always pushes open the overlapping part etc. to move forward, engages with the receiving edge of the expanded guide rail, and both ends of the cut end of the flexible tube. While further expanding the to create a gap,
The cable, which is set in the groove from the diagonally lower right to the diagonally upper left in the groove with respect to the guide rail, is detached from the cable while being pushed up diagonally leftward while the end portion is received by the cable receiving portion. This operation can be carried out continuously and in one go, very quickly and without damaging the cables.

When installing the vertically split flexible tube on the cable, set it so that the cable penetrates diagonally from the lower left to the upper right in the gap of the guide rail, and then set the shaft of the idler roller in the fitting frame. Lock and lock. Subsequent operations are the same as those for the removal work, but the cable that is set through the guide rail in the groove from diagonally lower left to diagonally upper right is received so that the end can be pressed by the cable receiving part. However, it will be pushed up diagonally to the right as it is. Therefore, as the guide rail advances, the cable on the expanded end side on the other end side of the opening portion is pushed downward from the guide rail, so the cut end of the flexible tube is positioned higher than the cable. by this,
The cable at the opening portion and the other end is enclosed by the overlapping portion or the like that is restored by contraction of the flexible tube, and is attached to the cable.

(3) Example An example of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a plan view of a vertical split flexible tube attachment / detachment apparatus 10 (hereinafter referred to as “apparatus 10”) according to an embodiment of the present invention. In the figure, the apparatus 10 is made of metal or synthetic resin. The guide rail 12 has a substantially V-shape that is long in both end directions in plan view.

In the figure, the guide rail 12 includes a parallel rail portion 22 that is provided substantially in parallel with a gap 24 in the middle, and an opening portion 18 that extends from the parallel rail portion 22 and is connected to each other,
The expanded end portion 26 extended to the opposite end side of the opening portion 18
And have.

Further, the expanded end portion 26 is provided with the cable receiving portion 14, and the gripping portion 16 is provided on the other end side of the cable receiving portion 14 facing the other end.

As described above, the opening portion 18 is formed by connecting the parallel rail portions 22 and gradually approaching each other, and connecting the front ends thereof. In the embodiment, this opening 18 is a guide rail.
It is formed in a V-edge shape in plan view on one end side of 12. Then, as will be described later, when the guide rail 12 is towed, the opening portion 18 side serves as the leading portion and pushes open the cut end portion of the vertically split flexible tube to proceed.

Further, as shown in FIGS. 3 and 4, the outer edges of the guide rails 12 are arranged so that the receiving edges 20 having a substantially U-shaped cross section face each other, that is, the opening sides of the U-shapes face each other toward the outer surfaces. Has been formed. The receiving edge 20 is formed continuously from the opening portion 18 to the parallel rail portion 22 and further to the expanding end portion 26 side, and is engaged with both cut end portions of the vertically split flexible tube P to be flexible as will be described later. This will allow the pipes to be installed and removed smoothly.

As will be described later, the guide rail 12 has a gap 24 for inserting a cable in a portion sandwiched between the inner surfaces of the parallel rail portions 22.

FIG. 2 is a front view of the device 10, and as shown in the drawing, the guide rail 12 is formed with a slight curvature in the longitudinal direction of the guide rail 12. Further, as described above, the receiving edge 20 of the guide rail is formed in the U-shaped frame shape.
As shown in FIG. 4, the lower projecting piece 32 is inclined obliquely downward in cross section. With this, together with the slightly curved structure of the guide rail, both cut end portions of the vertically split flexible tube are engaged with the receiving edge, and when the flexible tube is attached to or detached from the cable,
When pulling while the cut end is brought into contact with the receiving edge, the work is smoothly performed.

In FIGS. 1 and 5, in the gap 24 on the inner surface side of the guide rail 12, a center receiving portion 34 is provided so as to connect the parallel rail portions 22. The center receiving portion 34 cooperates with the cable receiving portion 14 when the cable is inserted into the gap 24 to bend the cable and guide the detachment or attachment of the vertically split flexible tube from the cable. As shown in, the tip end portion having a warhead-shaped cross section is disposed and fixed so as to be positioned on the cable receiving portion 14 side. In addition, as shown in FIG. 6, the center receiving portion 34 may be simply fixed by mounting a round bar. Also,
In the case where the entire guide rail is configured to be short, the center receiving portion 34 can be attached and detached without the need to provide it.

On the other hand, the cable receiving portion 14 is provided on the other end side of the opening portion 18 of the guide rail 12, that is, on the expanding side, and the expanding end portion
26 is connected and disengaged so as to be freely opened and closed, and a part of the cable is locked while the cable is inserted into the gap of the guide rail 12 at the time of coupling.

Further, in FIG. 2, a grip portion 16 composed of a handle having a lower portion freely rotatable is provided on a shaft 30 attached to a frame-shaped bearing plate 28 fixed to the upper end of the opening portion 18. The operator attaches and detaches the vertically split flexible tube to the cable while pulling the handle in the direction of the opening 18 while gripping the handle. The handle is capable of rotating approximately 180 ° in the horizontal direction in the figure, and is towed in the state shown by the left chain line and stowed when the device 10 is not used in the state shown by the right chain line.

It should be noted that this handle does not necessarily have to be provided, the point is that a handle that can hold the opening 18 side is sufficient, and it may be simply block-shaped, fixed to the tip side of the opening, or any other desired shape. Anything that can be grasped by the user is acceptable.

7 to 14, the configuration of the cable receiving portion 14 according to the embodiment is described in detail. In the drawings, the inner end wall 26 of the expanded end portion 26 of the guide rail has a U-shape as shown in FIG. The mold fitting frames 36 are fixed so that their respective openings are directed toward the tip end side of the expanding end portion 26, and the retaining arms as shown in FIG. 11 are provided in the inner wall of the expanding end portion 26 in the vicinity of the fitting frame 36. 38 is rotatably attached at one end. This retaining arm 38
Is provided with a hook, and a finger-hanging projection is formed on the upper end side thereof.

The cable receiving portion 14 includes an idler roller 42 which is inserted through a shaft 40 provided to connect the expanded end portion of the guide rail 12.
The shaft 40 has a rod shaft configuration having projections at both ends which fit into the opening of the U-shaped fitting frame 36 in FIGS. 13 to 15. Freely rotating roller
42 is inserted and inserted. As a result, after the protruding piece of the shaft 40 is fitted in the opening of the fitting frame 36, the retaining arm 38
Rotate to fit the hook onto the upper surface of the shaft 40, and
Prevent the 42 from coming off. Here, the idler roller 42 is
It is detachable from the U-shaped fitting frame 26, so that the cable receiving portion 14 itself can connect and open the expanded end portion 26 of the guide rail. Here, since the cable receiving portion includes the idler roller, the contact with the cable is minimized, the abrasion of the cable jacket is prevented, and the pulling operation can be performed smoothly.

FIG. 16 and FIG. 17 are explanatory views showing an operating state when the vertically flexible tube P is attached to or detached from the cable C using the device 10 according to the embodiment. First, in FIG. When carrying out the dismounting work, the cable C is set so as to penetrate diagonally from the lower right to the upper left in the gap 24 formed by the center receiving portion 34 of the guide rail 12 and the expanding end portion 26, and thereafter, The shaft 40 of the idle roller 42 is fitted into the fitting frame 36, and the retaining arm 38 is rotated to rotate the fitting frame 36 of the shaft 40.
Prevents the lock from being pulled out. Next, the operator pushes the overlapping portion at the end portion of the vertically split flexible tube P against the opening portion 18 of the guide rail 12 through the gap between the end portions formed while the operator pushes it open. At this time, both cut end portions of the flexible tube P engage with the inside of the receiving edge 20. Then, when the pulling portion 18 is pulled in the direction of the opening portion 18 while gripping the grip portion 16, the opening portion 18 always pushes and opens the overlapping portion to move forward, and engages with the receiving edge of the expanded guide rail to allow the flexible tube to move. Both ends of the cut end are further spread to create a gap, and the cable C set to penetrate the gap 24 from the diagonally lower right to the diagonally upper left with respect to the guide rail 12 is received by the cable receiving portion 14 at the end. As it is pushed diagonally upward to the left, it will be detached from the cable. At this time, by forming the guide rail in a slightly curved shape in the longitudinal direction, the cable is guided along the receiving edge while curving the cable in a direction opposite to the curved shape of the cut end of the flexible tube, so that the traction force of the guide rail can be reduced. And, it can be operated smoothly.

This operation can be performed continuously and in one go, and is extremely quick and without damaging the cables.

Next, referring to FIG. 17, when the vertically split flexible tube P is attached to the cable C, it is inserted into the gap 24 formed by the center receiving portion 34 of the guide rail 12 and the expanding end portion 26 from diagonally left below. The cable C is set so as to penetrate diagonally upward to the right, and then the shaft 40 of the idle roller 42 is locked and locked in the fitting frame 36.

The operation from the next is the same as the case of the removal work,
An operator pushes the opening portion 18 of the guide rail 12 into contact with the opening portion 18 of the guide rail 12 through an end gap formed while the operator pushes the overlapping portion at the end portion of the vertically split flexible tube P to open it. Then, while pulling in the direction of the opening portion 18 while gripping the grip portion 16, the opening portion 18 always pushes open the overlapping portion to move forward, and engages with the receiving edge of the expanded guide rail to allow the flexible tube to move. Push both ends of the cut further to create a gap. In this case, the cable C set so as to penetrate from the diagonally lower left to the diagonally upper right in the gap 24 with respect to the guide rail 12 is pushed upward as it is while being received so that the end portion can be pressed by the cable receiving portion 14. Will be done. Therefore, as the guide rail advances, the cable on the side of the expanded end 26 on the other end side of the opening 18 is pushed down below the guide rail 12, and the cut end of the flexible tube P is positioned higher than the cable. Will be done.

As a result, the cable at the opening 18 and the other end is enclosed by the overlapping portion that is restored by contraction of the flexible tube, and is attached to the cable. This operation can also be performed continuously and at once, very quickly and without damaging the cable, as in the case of the removal operation. In the present embodiment, the vertical split flexible tube is described as one in which the cut end part is partially overlapped, but the device 10 is also applicable to the flexible tube whose cut end part has a butt structure. Is.

The cable attachment / detachment device for the vertically split flexible tube according to the present invention is not limited to the above-described embodiment, and for example, the open end of the guide rail should be connected to the tapered tip end having a trapezoidal shape or other shapes. May be.

Also, the cable receiving part connects the expanded end of the guide rail,
It suffices that the guide rail be engaged and disengaged freely, and the retaining arm need not necessarily be attached to the inner wall side of the expanded end portion of the guide rail. Further, the shaft of the idler roller may be loosely attached to the groove on one side so as not to be pulled out, and may be detachable only in the groove on the other end side. Further, the vertical flexible tube may be made of soft material instead of hard vinyl. In addition,
When the device according to the present invention is used, if a V-shaped cut is made on the end portion side of the vertically split flexible tube, the attachment / detachment work can be performed more smoothly.

III. Effects of the Invention As described above, according to the vertical split flexible tube mounting / removing device of the present invention, the parallel rail portions are provided substantially parallel to each other with a gap in between, and the parallel rail portions. There is a substantially V-shaped guide rail that includes an opening portion that extends and is connected to each other in close proximity to each other, and an expanding end portion that extends to the other end opposite to the opening portion. Connects the expanded ends,
A cable receiving portion is provided that is detachably engaged and disengaged, and inserts the cable into the gap when connecting the cable receiving portion to lock a part of the cable, and both ends of the vertically split flexible tube are provided on the outer surface side of the guide rail. And a grip portion is provided on the opening portion, the cable is inserted into the gap, and the opening portion is gripped while holding the grip portion in a state where the expanded end portion is connected. By pulling in the direction, the flexible tube can be continuously and efficiently attached and detached to and from the cable by light work, and the flexible cover can be used without requiring a protective cover for cable protection. It is possible to prevent the deformation, damage, and line trouble of the cable due to the contracting force of the pipe.

Further, by providing the center receiving portion in the gap between the guide rails, the flexible tube can be attached and detached even when the guide rail is formed long.

Further, by forming the guide rail in a slightly curved shape in the longitudinal direction, the cable can be guided along the receiving edge while curving the cable in a direction opposite to the curved shape of the cut end portion of the flexible tube, so that the traction force of the guide rail can be reduced, And it can be operated smoothly.

Further, the guide rail receiving edge is formed in a U-shape, and the lower protruding piece thereof is provided obliquely downward, so that the pulling force of the guide rail can be further saved and both works can be smoothly performed. .

Further, by including the idler roller in the cable receiving portion, the contact with the cable is minimized, the abrasion of the cable jacket is prevented, and the pulling operation can be performed smoothly.

[Brief description of drawings]

1 to 17 show an embodiment of an attachment / detachment device for a vertically split flexible tube according to the present invention. FIG. 1 is a plan view thereof, FIG. 2 is a front view thereof, and FIG. 1 is a sectional view taken along the line BB of FIG. 1, FIG. 4 is a left side view of the same apparatus, FIG. 5 is a view taken along the line AA of FIG. 1, and FIG. FIG. 7 is a cross-sectional explanatory view showing another embodiment, FIG. 7 is a plan view of a main part showing a cable receiving portion, FIG. 8 is a cross-sectional view taken along the line CC of FIG. 7, and FIG. Front view, FIG. 10 is an explanatory plan view of a main part showing a mounting state of the fitting frame, FIG. 11 is a front explanatory view of a retaining arm, and FIG. 12 is a mounting state of the retaining arm. FIG. 13 is an explanatory plan view of a main portion, FIG. 13 is an explanatory plan view of a shaft and an idler roller mounting plane, FIG. 14 is a sectional view taken along the line DD of FIG. 13, and FIG. Sections, 16 and 17 show the cable of a vertically split flexible tube. Operation explanatory view showing the installation and removal status to, FIG. 18 is an explanatory view showing the installation position or the like of the flexible tube to the cable, FIG. 19 is a perspective view of the rigid plastic of the flexible tube. 10 …… Vertical split flexible tube cable attachment / detachment device, 12 ……
Guide rail, 14 …… Cable receiving part, 16 …… Grip part, 18
…… Opening part, 20 …… Receiving edge, 24 …… Gap, 26 …… Expanding end part, 34 …… Center receiving part, 36 …… Mating frame, 42 …… Idler roller

Claims (5)

[Claims] 1. A parallel rail portion provided substantially parallel to each other with a gap in the middle, an opening portion extending from the parallel rail portion and connected close to each other, and on the other end side opposite to the opening portion. A substantially V-shaped guide rail including an extended end portion that is extended is provided, and the extended end portion is connected and detachably engaged with the extended end portion, and a cable is inserted into the gap when the extension end portion is connected. Is provided with a cable receiving portion that locks a part of the cable while inserting, and a receiving edge that engages with both cut end portions of the vertically split flexible tube is provided on the outer surface side of the guide rail. The opening portion is provided with a grip portion, and the cable is inserted into the gap, and the vertically split flexible tube is connected to the cable while pulling in the opening portion direction while gripping the grip portion in a state where the expanded end portion is connected. Cable attachment / detachment device for vertically split flexible tubes characterized by being attached or detached . 2. A center receiving part for guiding the detachment or attachment of the vertically split flexible tube from the cable while bending the cable in cooperation with the cable receiving part when the cable is inserted into the gap. A cable attachment / detachment device for a vertically split flexible tube according to claim 1, wherein 3. The cable attachment / detachment device for a vertically split flexible tube according to claim 1 or 2, wherein the V-shaped guide rail is formed with a slight curvature in the longitudinal direction. 4. The guide rail according to claim 1, 2, 3 or 4, wherein the receiving edge of the guide rail has a U-shaped frame shape, and the lower projecting piece of the guide rail is inclined downward. Vertical flexible tube cable attachment / detachment device. 5. The cable receiving portion includes an idler roller inserted through a shaft provided to connect the expanded end portions of the guide rails. The cable attachment / detachment device for the vertically split flexible tube according to item 3 or 4.