JP2002233014A - Drop-preventing device for protecting tube - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drop-preventing device for protecting tube, which can be always speedily, surely and safely fixed. SOLUTION: The drop-preventing device comprises a pair of catching pieces 2, each having an approximately semi-cylinder-like shape to catch a protecting tube 51a/51b/51c each having a leg part 54a/54b on both sides. The catching pieces 2 are each connected on one side and disposed with catching members 3 protruding facing each other to catch the respective leg part 54a/54b on the other side. And the tips of the catching members 3 can be freely fastened through fastening means 5, 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protection device for preventing a protection tube inserted through an overhead distribution line from falling.

[0002]

2. Description of the Related Art Conventionally, in order to improve the reliability of overhead distribution lines, secure public security, or prevent disasters, due to civil engineering and construction work increasing near overhead distribution lines, overhead transmission lines have been proposed. 2. Description of the Related Art Protective works such as mounting a protective pipe such as a poly pipe or a protective pipe for an insulated wire on a distribution line are frequently performed. As shown in FIG. 9, for example, the plastic pipe 51a has an opening 53 for expanding along the longitudinal direction of the plastic synthetic resin pipe main body 52 having elasticity, and both side edges of the opening 53. Along with a pair of closing feet 54a each protruding in opposition. When attaching the poly pipe 51a to a required portion of the overhead distribution line 55, the foot portion 54a is expanded outwardly against the elastic force of the poly pipe main body 52, and is fitted to the overhead distribution line 55. As well as the legs 54a on both sides.
Is returned to the original state, and the opening 53 is closed so as to be attached (see FIG. 9).

However, as described above, the poly tube 51a
Can be inserted into the overhead distribution line 55 in an external fitting manner, and can be attached by closing the opening 53 by contacting the foot portions 54a on both sides, so that the attachment is uncertain, and strong wind, vibration, etc. This may cause the foot portion 54a of the poly tube 51a to expand and fall.
For this reason, conventionally, a tape (not shown) is wound around the mounting of the poly tube 51a to prevent the foot portion 54a from expanding,
Although a method of effectively preventing the falling of the poly tube 51a is adopted, since the winding of the tape is performed manually, not only is the winding operation extremely troublesome and troublesome, but also, It is easy to cause an unexpected accident such as an electric shock accident.

As a solution to such a conventional problem, a fall prevention device shown in FIGS. 8 and 9 is known, and this will be described with reference to FIG. That is, in the drawing, reference numeral 56 denotes a fall prevention device made of an elastic synthetic resin, and 57 denotes the fall prevention device 5.
6, a pair of semi-cylindrical holding pieces 58 on both sides, a substantially U-shaped connecting part for integrally connecting one side of each holding piece 57, and a foot 59 defined by the connecting part 58 The fitting portion 60 is an opening formed on the other side so as to be freely opened, and the opening 60 is always closed by the elastic force of the holding pieces 57 on both sides. Reference numeral 61 denotes a pair of guide pieces on both sides which are protruded outwardly along both side edges of the opening 60.

[0005] The fall prevention device 56 configured as described above is
As shown in FIG. 9, an indirect hot-line gripping tool 6 such as
2, while holding the connecting portion 58, the overhead distribution line 55
Is made to approach the poly tube 51a attached to the device. The guide piece 61 guides the foot portion 54a and presses it against the poly pipe main body 52. The holding piece 57 is expanded outward against the elastic force to fit the poly pipe main body 52 and fit. The foot portion 54a is fitted to the portion 59, and thereafter, the holding portion 57 is returned to the current state, and the opening portion 60 is closed to be attached.

However, the conventional example constructed as described above can be safely mounted by the indirect hot-line method, but the elastic force of the holding piece 57 simply fits and holds the poly pipe main body 52 and the foot 54a. Since the opening 60 is closed and attached, the attachment is insufficient and uncertain, and it is difficult to effectively exhibit the fall prevention function.

The present invention solves such a conventional problem,
It is an object of the present invention to provide a protective tube drop prevention device which can be mounted quickly, reliably and safely.

[0008]

That is, according to the first aspect of the present invention, there is provided a protective tube 51a, 51b with foot portions 54a, 54b.
A pair of holding pieces 2 each having a substantially semi-cylindrical shape so as to hold the holding section 51c. The holding pieces 2 are connected at one side and hold the foot portions 54a and 54b at the other side. The holding member 3 is provided to protrude in an opposing manner,
The gist of the protection tube fall prevention device is characterized in that the front end portion of the holding member 3 is freely engageable via engagement means 5 and 6.

The invention according to claim 2 is characterized in that holding portions 13a and 13b for holding the foot portions 54a and 54b are formed at a connecting portion of the holding piece 2 so as to face the holding member 3. The gist of the present invention is a fall protection device for a protective tube according to claim 1.

According to a third aspect of the present invention, the holding members 2 on both sides are required to have a required adjusting means 8 so that the inner diameter can be freely adjusted.
The gist of the protection tube fall prevention device according to claim 1 or 2, characterized in that it is connected by a connection member (11) via 9, 10, and 12.

According to a fourth aspect of the present invention, there is provided a protective tube fall prevention device according to any one of the first to third aspects, wherein a gripping piece 7 is protruded from at least one of the holding pieces 2. Is what you do.

[0012]

Embodiments of the present invention will be described below with reference to an embodiment shown in the drawings. 1 to 5 show an embodiment of the present invention. In the drawings, reference numeral 1a denotes a fall prevention device made of synthetic resin having elasticity, and 2 denotes a pair of semi-cylindrical members on both sides constituting the fall prevention device 1a. The inside diameter of each of the holding pieces 2 is set to a required size so that the poly pipe main body 52 can be held. Reference numeral 3 denotes a pair of holding members protruding from one side of each holding piece 2 so as to hold the foot 54a in opposition, 4a denotes a holding portion formed in a paragraph shape on the opposing surface of each holding member 3, and 5 The engaging projections 6 protruding from the front end of one of the holding members 3 correspond to the engaging projections 5.
The engaging holes 7 formed on the holding member 3 are gripping pieces projecting from the outer surface of the one holding member 3. 8 is a long hole for adjusting the inner diameter formed on the other side of each of the holding pieces 2 so as to face each other in the circumferential direction;
Reference numerals 9 and 10 denote upper and lower hook holes which are respectively provided laterally in communication with the upper and lower ends of the long holes 8, and 11 denotes an elasticity for connecting the other side of each holding piece 2 so as to be openable. The connecting member 11 is movable along the circumferential direction of the holding piece 2 by fitting a pair of fasteners 12 projecting from both sides thereof into the long holes 8. It is connected to. 1
Reference numeral 3a denotes a foot holding portion formed at the center of the connecting member 11 so as to face the holding portion 4a of the holding member 3.

When the fall prevention device 1a constructed as described above is attached to the poly tube 51a attached to the overhead distribution line 55, first, the inner diameter of the holding piece 2 is made to correspond to the outer diameter of the poly tube 51a. adjust. That is, when the outer diameter of the poly pipe 51a is relatively large, the fastener 12 is moved along the elongated hole 8 while the connecting member 11 is pulled outward, and the polyhedral tube 51a is hooked on the upper hooking hole 9. Then, the inner diameter of the holding piece 2 is largely adjusted (see FIGS. 4A and 4B). At this time, the holding pieces 2 and the holding members 3 on both sides exhibit a state in which the holding pieces 2 and 3 are slightly expanded outward with the connection member 11 as a center. Thereafter, the plastic pipe 51a is approached while being held downward by the indirect hot-line holding tool 62 via the holding piece 7. Then, as shown in FIG. 2, when the feet 54a of the poly pipe 51a have a downward shape, they are fitted from above the poly pipe 51a, and the poly pipe main body 52 is sequentially placed between the holding pieces 2 so that the foot 54
a is fitted between the holding members 3 (see FIGS. 2A and 2B).
Next, while the outer side surface of the holding member 3 is gripped by the indirect hot-line gripping tool 62, the engagement protrusion 5 is engaged with the engagement hole 6 to complete the mounting (see FIGS. 2C and 4A).

As shown in FIG. 3, when the foot portion 54a of the poly tube 51a has an upward shape, the indirect hot-line gripping tool 62 causes the foot portion 54a to be gripped downward via the gripping piece 7 while sequentially holding the foot. The portion 54a is connected to the holding portion 13a
Next, the poly pipe main body 52 is fitted between the holding pieces 2 (see FIGS. 3A and 3B). Then, indirect hot-line gripping tool 6
2, the holding member 3 is gripped, and the engaging projections 5 are engaged with the engaging holes 6 to complete the mounting (see FIG. 3C and FIG. 4B).

As shown in FIG. 5, when the poly pipe 51b has a relatively small diameter, the fastener 12 is moved inward along the long hole 8 while the connecting member 11 is pressed inward. ,
It is preferable that the inner diameter of the holding piece 2 is adjusted to be small by hooking the lower hooking hole 10 and then attached to the poly pipe 51b by the same operation as described above.

FIGS. 6 and 7 show a fall prevention device 1b according to another embodiment of the present invention, in which a holding portion 4b of a holding member 3 and a holding portion of a connecting member 11 for mounting a large poly tube 51c of a foot portion 54b. 13b is different from the above embodiment in that each is larger, and the other parts are the same, and the same reference numerals indicate the same parts. The embodiment configured as described above may be attached to the poly tube 51c by operating in the same manner as the previous embodiment (FIG. 7).
AB).

[0017]

According to the first aspect of the present invention, as described above, the protective tubes 51a, 51b, 5 with the feet 54a, 54b are provided.
A pair of holding pieces 2 each having a substantially semi-cylindrical shape so as to hold 1c. One side of the holding piece 2 is connected, and the other side of the holding piece 2 holds the foot portions 54a and 54b. The holding members 3 are protruded in opposition to each other, and the front end of the holding members 3 is freely engageable via engaging means 5 and 6, so that the poly tubes 51a, 51b and 51c The tube body 52 is fitted between the holding pieces 2 and the foot portions 54a and 54b are fitted between the holding members 3, respectively.
The poly pipe main body 52 and the feet 54a and 54b can be clamped by engaging the clamping member 3 through the hole, and the mounting can be performed quickly and reliably at all times. The function can be demonstrated effectively.

According to the second aspect of the present invention, as described above, the holding portions 13a and 13b for holding the feet 54a and 54b at the connecting portion of the holding piece 2 so as to face the holding member 3.
Is formed, the holding members 3 when the feet 54a and 54b of the poly tubes 51a, 51b and 51c attached to the overhead distribution line 55 assume a downward state, and
When the feet 54a and 54b are in the upward state, they can be clamped by the clamps 13a and 13b of the connecting member 11, so that the feet 54a and 54b can always be securely attached regardless of the orientation of the feet 54a and 54b. You can do it.

According to the third aspect of the present invention, as described above, the holding pieces 2 on both sides are connected by the connecting member 11 via necessary adjusting means 8, 9, 10 and 12 so that the inner diameter can be freely adjusted. The pipes 51a and 51b
The inner diameter of the holding piece 2 can be appropriately adjusted according to the outer diameter of 51c, and can be sufficiently applied to various poly tubes 51a, 51b, and 51c having different outer diameters.

According to the fourth aspect of the present invention, since the gripping piece 7 is protruded from at least one of the holding pieces 2 as described above, the gripping piece 7 is gripped by the indirect hot-line gripping tool 62 such as a yatco. By doing so, the mounting work can be performed in an indirect hot-line construction method, and the mounting work of the fall prevention tools 1a and 1b can always be performed extremely safely.

[Brief description of the drawings]

FIG. 1 is a perspective view of a fall prevention device 1a showing one embodiment of the present invention.

FIG. 2 is a perspective view showing a state in which the fall prevention device 1a of the embodiment is attached to a poly tube 51a in which a foot 54a is in a downward state.

FIG. 3 is a perspective view showing a state in which the fall prevention device 1a of the embodiment is attached to a poly tube 51a in which a foot portion 54a is directed upward.

FIG. 4 is a cross-sectional view showing a state where the fall prevention device 1b of the embodiment is attached to the poly pipe 51a in which the foot portion 54a is directed downward and upward.

FIG. 5 is a cross-sectional view showing a state where the inner diameter of the fall prevention device 1a of the embodiment is adjusted, and the foot portions 51a are attached to the downward and upward poly tubes 51b, respectively.

FIG. 6 is a perspective view of a fall prevention device 1b showing another embodiment of the present invention.

FIG. 7 is a cross-sectional view showing a state in which the fall prevention device 1b of the embodiment is attached to the downwardly and upwardly-facing poly tubes 51c, respectively.

FIG. 8 is a perspective view showing a conventional example.

FIG. 9 is a perspective view showing a mounting state of a conventional example.

[Explanation of symbols]

 1a / 1b Fall Prevention Tool 2 Clamping Piece 3 Clamping Member 5 Engagement Projection 6 Engagement Hole 7 Grip Piece 8 Long Hole 9 Upper Hook Hole 10 Lower Hook Hole 12 Fastener 13a / 13b Holder 51a / 51b / 51c Poly Pipe 52 Poly pipe body 54a / 54b Foot

Claims (4)

[Claims] 1. Protective tubes 51a and 5 with feet 54a and 54b.
1b and 51c are made of a pair of holding pieces 2 each having a substantially semi-cylindrical shape so as to hold the holding pieces 1b and 51c.
The holding member 3 is provided to protrude in an opposing manner so as to hold the b.
In addition, the tip of the holding member 3 is freely engageable via engaging means 5 and 6, and the fall prevention device for the protective tube is provided. 2. A holding portion 13a for holding the feet 54a and 54b at a connecting portion of the holding piece 2 so as to face the holding member 3.
13b is formed.
Fall protection device for the protective tube described. 3. The holding pieces 2 on both sides are connected by a connecting member 11 via necessary adjusting means 8, 9, 10, 12 to adjust the inner diameter freely.
3. A fall prevention device for a protective tube according to claim 1. 4. The fall prevention device for a protective tube according to claim 1, wherein a gripping piece is protruded from at least one of the holding pieces.