JP4439458B2 - Helical cable support and cable wiring method - Google Patents

Description

  The present invention relates to a spiral cable support and a cable passing method, and more particularly to a spiral cable support and a cable passing method suitable for bundling cables such as electric wires and optical cables.

  Conventionally, a helical cable support for bundling cables such as electric wires and optical cables and supporting them in aerial form has a structure in which a spiral is formed in one direction between both ends. It has a total length that can be extended to a length corresponding to a required span (for example, about 40 m) according to the interval, and is made in a state of being contracted in the axial direction before the overhead wire. In such a spiral cable support, after inserting the spiral cable support through a support wire such as a messenger wire suspended between two supports, one end of the spiral cable support is fixed to one support, The other end is extended along the support line and fixed to the other support column (see, for example, Patent Document 1 below).

  Since such a helical cable support has a long coil shape, when it is installed on an existing support line or the like, one end of the spiral cable support is unidirectional along the support line. The support wire must be taken into the inside sequentially while rotating, and the entire spiral cable support must be turned until the take-in is completed. This work requires a lot of force (especially the work becomes harder as the wire diameter of the helical cable support becomes thicker), and the entire number of times the entire helical cable support is turned. It is a work that puts a heavy burden on the workers.

  Therefore, in Patent Document 2 below, a relatively short and short helical cable having an overall length that is much shorter (for example, about 1.5 m) than the required span and having male and female connectors at both ends. Supports have been proposed. This spiral cable support tool inserts the end of the spiral cable support tool into a support wire or the like that is preliminarily bridged between two columns, and spirals the support wire and the like while rotating in one direction along the spiral. And then add the next spiral cable support by connector connection, and repeat this addition several times until the required span length is reached. It is constructed by fixing the vicinity of both ends to a support line in the vicinity of each column.

Patent Document 3 below proposes a helical cable support in which a left-handed spiral part and a right-handed spiral part are alternately arranged along an axis via an inversion part. This allows an arbitrary inversion portion to be inserted into an existing support line and taken into the support line as it is by rotating along the spiral in the insertion direction.
Japanese Patent Publication No.52-4033 JP 2002-345116 A JP 2005-168284 A

  However, in the spiral cable support proposed in Patent Document 2 and Patent Document 3, the support wire is taken into the spiral cable support compared to the spiral cable support proposed in Patent Document 1. Although the work is simplified, when passing an optical fiber cable or a light collecting drop cable through a spiral cable support, the optical cable or the like cannot be bent. Is required to pass the wire through the spiral cable support, and then tow the wire to an optical cable or the like and pull it with a winch or the like, which requires time, labor, and equipment used for the work. In addition, there is a problem that when the wire is passed, the spiral cable support is bent by being caught by the spiral cable support, and the spiral cable support may need to be replaced.

  An object of the present invention is to provide a spiral cable support and a cable wiring method capable of easily and quickly performing a wiring of an optical cable or the like without requiring a wiring wire or a winch.

The first spiral cable support of the present invention is a spiral cable support (1) for bundling cables (12) into a bundle, which is a clockwise spiral portion (4) and a counterclockwise spiral portion. (5) are connected alternately and continuously along the axis (2), and the region where the counterclockwise spiral portion (5) changes to the clockwise spiral portion (4) is the n-type apex (6). And the portion where the clockwise spiral portion (4) changes to the counterclockwise spiral portion (5) is a u-type vertex (7), and the position of the n-type vertex (6) is the u-type. vertex (7) is above the position of the right-handed spiral portion (4) first section composed of (P ₁ between the n-type vertex (6) and the u-type apex (7) ) And the second section (P) constituted by the counterclockwise spiral (5) between the u-type vertex (7) and the n-type vertex (6) ₂ ) in the direction of the axis (2), the clockwise spiral portion (4) and the counterclockwise spiral portion (5) draw a circle, and the n-type apex in the first section (P ₁ ) The first central angle (θ ₁ ) of the arc drawn by the clockwise spiral portion (4) between (6) and the u-shaped vertex (7) and the counterclockwise direction in the second section (P ₂ ) The second central angle (θ ₂ ) of the circular arc drawn by the spiral portion (5) is equal to 360 ° or more and 540 ° or less, and the axis line ( P ₁ , P ₂ ) has the axis ( 2) to create a wavy line space (15) parallel to the cable (12) through the space (15) while bending the cable (12) partially from one end of the cable (12) to the axis (2). characterized by being adapted to Tsusen in the helical cable support (1) from a direction perpendicular to.
Here, the spiral cable support (1) has spiral portions (5a, 5b) obtained by dividing the clockwise spiral portion (4) or the counterclockwise spiral portion (5) in half, respectively. The spiral cable support (1) may have connecting members (8, 9) at both ends for connecting to the next spiral cable support.
The second spiral cable support of the present invention is a spiral cable support (31; 41) for bundling the cables (12) into a bundle, and includes a clockwise spiral (38; 48) and The counterclockwise spiral portion (39; 49) is alternately and continuously connected along the axis (2), and the counterclockwise spiral portion (39; 49) is connected to the clockwise spiral portion (38; 48). The changing part is an n-type apex (36; 46), and the part where the clockwise spiral (38; 48) is changed to the counterclockwise spiral (39; 49) is a u-type apex (37; 47). The position of the n-type vertex (36; 46) is below the position of the u-type vertex (37; 47), and the n-type vertex (36; 46) and the u-type vertex (37) 47) a first section (38; 48) constituted by said clockwise spiral (38; 48) _31; P ₄₁₎ and said u-type vertex (37; 47) and said n-type vertex (36; 46) the left-handed spiral portion between the (39; 49) by constructed second zone (P ₃₂ ; looking at P ₄₂₎ in the direction of the axis (2), the clockwise spiral portion (38; 48) and the left-handed helical portion (39; 49) is an arc of the C-shaped, the first The first central angle (θ ₃₁ ) of the C-shaped arc drawn by the clockwise spiral (38; 48) in the section (P ₃₁ ; P ₄₁ ) and the second section (P ₃₂ ; P ₄₂ ) the counterclockwise spiral portion (39; 49) a second central angle of the C-shaped arc drawn by the (theta ₃₂₎ and an equal and less than 270 ° or 360 °, said first and second sections (P _{31, P 32; P 41,} P 42) parallel linear space (35 the axis (2); make 45), said cable (12) , The space without bending; through (35 45), the helical cable support from a direction perpendicular to said axis (2); characterized in that so as to Tsusen to (31 41).
Here, when the first section (P ₄₁ ) is viewed in the direction of the axis (2), the u-shaped apex (47) indicates that the clockwise spiral portion (48) cancels the axis (2). You may bite inside the drawn C-shaped arc (40).
The spiral cable support (31; 41) has a spiral portion (39a, 39b; 49a, 49b) in which the clockwise spiral portion (38; 48) or the counterclockwise spiral portion (39; 49) is divided in half. May be provided at both ends, and the spiral cable support (31; 41) may have connection members (8, 9) at both ends for connecting to the next spiral cable support.
The third helical cable support of the present invention is a helical cable support (51) for bundling the cables (12) into a single bundle, the first clockwise spiral portion (58a) and the first 1st spiral part (58) which connects 1 left-handed spiral part (58b), and 2nd which consists of 2nd right-handed spiral part (59b) and 2nd left-handed spiral part (59a). Are connected to the first clockwise spiral portion (58a) and the second counterclockwise spiral portion (59a) alternately and continuously along the first axis (60). and it has the first left-handed spiral portion and the second right-handed spiral portion and (58b) and (59b), but about said first axis (60) parallel to the second axis (61) is formed, the second left-handed spiral portion (59a) is the first right-handed spiral portion changes into (58a) parts Is the n-type apex (56), and the part where the first counterclockwise spiral (58b) changes to the second clockwise spiral (59b) is the u-type apex (57) , The first section (P _51a ) constituted by the first clockwise spiral portion (58a) and the second section (P _51b ) constituted by the first counterclockwise spiral portion (58b) When viewed in the direction of the first axis (60), the first counterclockwise spiral (58b) on one side of the u-shaped apex (57) is centered on the second axis (61), and An arc having a curve opposite to the arc centered on the first axis (60) drawn by the first clockwise spiral portion (58a) is drawn, and the first and second sections (P _51a , P _51b) and the second left-handed helical portion (constituted by 59a) the third section (P _52a) Serial make space (55) of said first axis (60) and parallel straight to the fourth section and (P _{52 b)} formed by the second right-handed spiral portion (59b), said cable (12 ) Is passed through the space (55) without bending and is connected to the helical cable support (51) from a direction perpendicular to the first axis (60).
Here, the helical cable support (51) is closed each of the first helical portion (58) or the second helical portion divided into spiral portion (59) half (59c, 59d) at both ends And the said helical cable support (51) may have a connection member (8, 9) for connecting and extending to the next spiral cable support at both ends, respectively.

The first cable passing method of the present invention is a cable passing method for passing the cable (12) to the first spiral cable support (1) of the present invention, wherein the cable (12) through the cable end partially wavy bending while the wavy space from the (12) (15), in the axial direction or we perpendicular to (2) before Symbol spiral cable support (1) It is characterized by a continuous line.
Second cable communication line method of the invention, the second or third spiral cable support device of the present invention there is provided a (31; 51; 41) to the cable communication line method of wire-passing the cable (12), said cable (12), a space without the straight bending through (; 45 35 55), said axis (2) or said first axis (60) direction or al before Symbol spiral perpendicular to It is characterized by being connected to the cable support (31; 41; 51) .

The helical cable support and the cable passing method of the present invention have the following effects.
(1) In the first and second spiral cable supports of the present invention, the clockwise spiral portion and the counterclockwise spiral portion are alternately connected, and the winding angle around the axis of each spiral portion is set. By setting it to 270 ° or more and 540 ° or less, a wavy or linear space can be created in parallel to the axis in the section formed by two clockwise and counterclockwise spiral portions. Since it can enter from the direction perpendicular to the axis, in addition to the conventional wiring method, it is possible to perform simple and quick wiring of an optical cable or the like without requiring a wiring wire or winch.
(2) In the third helical cable support device of the present invention, it is possible to put such an optical cable from a first direction perpendicular to the axis, in addition to the conventional wire-passing method, Ya wire for wire-passing A simple and quick optical cable can be connected without the need for a winch.
(3) In the third spiral cable support of the present invention, the size of the space through which the cable passes is designed by designing the radius and winding angle of the arc drawn by the clockwise spiral portion and the counterclockwise spiral portion with the first axis as the axis. Since the height can be changed, it is possible to prevent the optical cable from coming out of the spiral cable support due to workability when taking the optical cable or the like into the spiral cable support or the influence of wind or the like.

  For the purpose of easily and quickly passing optical cables and the like without the need for wires or winches, a clockwise spiral and a counterclockwise spiral are connected alternately and clockwise. This was realized by setting the winding angle around the axis of the left-handed spiral portion to 270 ° or more and 540 ° or less.

Hereinafter, embodiments of the helical cable support and the cable passing method of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the helical cable support 1 according to the first embodiment of the present invention forms a clockwise spiral with respect to one direction of the axis 2 (for example, the direction of the white arrow 3). The winding angle around the axis 2 of the clockwise spiral portion 4 and the counterclockwise spiral portion 5 is constant 360 ° or more and 540 ° or less with the spiral spiral portion 4 and the counterclockwise spiral portion 5 forming a counterclockwise spiral. The angle is configured by connecting them alternately and continuously.

  However, the spiral portions 5a and 5b at both ends of the spiral cable support 1 are obtained by dividing the counterclockwise spiral portion 5 in half.

  The spiral cable support 1 has connecting members (couplers) 8 and 9 for connecting to the next spiral cable support 1 at both ends, respectively, and the coupler 8 of the spiral cable support 1 and the next spiral shape. In a state where the coupler 9 of the cable support 1 is connected, the spiral portion 5a of the spiral cable support 1 and the spiral portion 5b of the next spiral cable support 1 are connected to form one counterclockwise spiral portion. . Therefore, in the state where several helical cable supports 1 are sequentially connected, the clockwise spiral portion 4 and the counterclockwise spiral portion 5 are alternately and continuously connected around the axis 2.

  In the direction of the white arrow 3, the part 6 where the left-handed spiral part 5 changes to the right-handed spiral part 4 (the part where the left-handed spiral turns into the right-handed spiral) is the upward vertex (the letter “n”) The portion 7 where the clockwise spiral portion 4 is changed to the left-handed spiral portion 5 (portion where the clockwise spiral is changed to the counterclockwise spiral) is a downward vertex (the vertex of the English letter “u”). It has become. Therefore, in this specification, the part 6 is called “n-type vertex” and the part 7 is called “u-type vertex”.

The material of the helical cable support 1 is a material in which a certain degree of hardness such as a steel wire is coated with a material having a low coefficient of friction such as polyethylene resin, and the direction of the axis 2 of the helical cable support 1 The length of is, for example, 150 cm.
When the spiral cable support 1 is formed of an elastic material, the overall dimensions and the winding angle about the axis 2 of each spiral before and after the installation of the spiral cable support 1 Therefore, in this specification, those values are values after the installation of the helical cable support 1.

Next, a method of installing the helical cable support 1 on a support line installed between support poles such as utility poles will be described with reference to FIG.
The operator 20 hooks one end of the spiral cable support 1 on the support line 11 previously suspended between the two columns 21 and 22, and then slides the spiral cable support 1 along the support line 11. When the spiral cable support 1 is slid to the other end, the coupler 9 of the next spiral cable support 1 is engaged with the coupler 8 of the spiral cable support 1, thereby causing the spiral cable support 1. And the next spiral cable support 1 are connected. After this operation is repeated until the spiral cable support 1 crosses between the two struts 21, 22, both ends of the connected spiral cable support 1 are connected to the support lines 11 near the two struts 21, 22. Fix it.

Next, a method of passing a cable such as the optical cable 12 (cable passing method) through the spiral cable support 1 will be described with reference to FIGS. In the following, a case where the optical cable 12 is passed through the spiral cable support 1 will be described.
As shown in FIG. 2, the section formed by the clockwise spiral portion 4 between the n-type vertex 6 and the u-type vertex 7 of the spiral cable support 1 is P ₁ , and the u-type vertex 7 and the n-type vertex Assuming that the section formed by the counterclockwise spiral portion 5 between the _two sections is P ₂ , the lengths of the _two sections P ₁ and P ₂ are equal (P ₁ = P ₂ ). The shape of one section P _1, P ₂ clockwise spiral portion 4 and the left-handed spiral portion 5 is a line symmetrical with respect to the u-type vertex 7 or n-type vertex 6.

The position of the n-type vertex 6 indicated by the first auxiliary line 13 parallel to the axis 2 is higher than the position of the u-type vertex 7 indicated by the second auxiliary line 14. Looking at the spiral cable support 1 of the section P ₁ and segment P ₂ from the left side of FIG. 2 in the direction of the axis 2, as shown in FIG. 3, the helical portion (right-handed spiral portion 4 and the left-handed spiral portion 5 ) is a circle, the clockwise spiral portion 4 central angle theta ₁ of the arc drawn by the more than 360 ° 540 ° or less (shown example between the n-type vertex 6 and u type apex 7 in the section P _1, about 450 °). The center angle theta ₂ of the arc drawn by the counterclockwise spiral portion 5 in the section P ₂ is the arc center angle of the right-handed spiral portion 4 is drawn between the n-type vertex 6 and u type apex 7 in the section P ₁ theta Equal to ₁ (θ ₁ = θ ₂ ).

  For this reason, by bending the optical cable 12 along the space 15 indicated by two parallel broken lines in FIG. 2, the optical cable 12 can be inserted from the direction perpendicular to the axis 2 (through line). Actually, since it is difficult to bend into the wavy line like the space 15 over the entire length of the optical cable 12, the optical cable 12 is inserted while being partially bent into the wavy line.

  After the wiring, for example, if both ends of the optical cable 12 are fixed, the tension works and the optical cable 12 does not bend like the wavy line 15. Therefore, even if the spiral cable support 1 is shaken by wind or the like, the spiral It is possible to prevent the optical cable 12 from coming out from the cable support 1.

Here, the winding angles (center angles θ ₁ , θ ₂ ) around the axis 2 of each spiral portion (the clockwise spiral portion 4 and the counterclockwise spiral portion 5) of the spiral cable support 1 are connected to the optical cable. Designed depending on 12 allowable bending radii and bendability. For example, when the allowable bending radius is small and easy to bend, there is a high possibility that the optical cable 12 will come out of the spiral cable support 1 due to the influence of wind or the like, so the winding angle of each spiral portion is increased. On the other hand, when the allowable bending radius is large and bending is difficult, the winding angle of each spiral portion is reduced in order to improve workability.

Next, a procedure for passing the optical cable 12 will be described with reference to FIG.
One end of the optical cable 12 is fixed to the closure 23 in advance.
When using the insertion assisting rod 27, the ground worker 26 uses the insertion assisting rod 27 having a U-shape to support the spiral cable while bending the optical cable 12 from the end close to the closure 23 as described above. Take it into the tool 1. The ground worker 28 extends the optical cable 12 from the cable drum 29 and assists the ground worker 26.
Moreover, when using the bucket vehicle 24, the bucket worker 25 takes in the spiral cable support 1 from the end close to the closure 23 while bending the optical cable 12 by the method described above. The ground worker 28 extends the optical cable 12 from the cable drum 29 and assists the bucket worker 25.

Next, a helical cable support according to a second embodiment of the present invention will be described with reference to FIGS.
The helical cable support 31 according to the present embodiment is effective when using a wire material that has a very large allowable bending radius and is difficult to bend, and places importance on workability. As shown in FIG. The helical cable support according to the first embodiment described above in that the position of the n-type vertex 36 indicated by the parallel first auxiliary line 33 is below the position of the u-type vertex 37 indicated by the second auxiliary line 34. Different from ingredient 1.

A section formed by the clockwise spiral portion 38 between the n-type vertex 36 and the u-type vertex 37 is defined as P _31, and is configured by a counterclockwise spiral portion 39 between the u-type vertex 37 and the n-type vertex 36. Let P ₃₂ be the interval. Further, the spiral portions 39a and 39b at both ends of the spiral cable support 31 are obtained by dividing the counterclockwise spiral portion 39 in half, and the spiral in the spiral cable support 1 according to the first embodiment described above. Similarly to the portions 5a and 5b, one counterclockwise spiral portion is formed in a row.

Looking at the section P ₃₁ of the helical cable support member 31 in the direction from the left side of the axis 2 of Figure 6, as shown in FIG. 7, right-handed spiral portion 38 between the n-type apex 36 and u type vertex 37 Draw a C-shaped arc. The central angle θ ₃₁ is not less than 270 ° and less than 360 ° (in the illustrated example, about 270 °). The central angle θ _{32 of the} circular arc drawn by the counterclockwise spiral portion 39 in the section P ₃₂ is equal to the central angle θ _{31 of the} circular arc drawn by the clockwise spiral portion 38 between the n-type vertex 36 and the u-type vertex 37 (θ ₃₁ = Θ ₃₂ ).

  For this reason, it is possible to pass through the space 35 indicated by two parallel broken lines in FIG. 6 from a direction perpendicular to the axis 2 without bending the optical cable 12 or the like. However, there is a possibility that the spiral cable support 31 may sway due to wind or the like after passing through, and the support line 11 or the optical cable 12 may come out of the spiral cable support 31. Compared with the cable support 1, the height is slightly higher.

Next, a spiral cable support according to a third embodiment of the present invention will be described with reference to FIGS.
The helical cable support 41 according to the present embodiment secures safety while placing importance on workability.

A section constituted by the clockwise spiral portion 48 between the n-type vertex 46 and the u-type vertex 47 is defined as P _41, and is constituted by a counterclockwise spiral portion 49 between the u-type vertex 47 and the n-type vertex 46. Let P ₄₂ be the interval. The shape of the two sections P _41, right-handed helical portion 48 and a left-handed spiral portion 49 of the P ₄₂ is a line symmetrical with respect to the u-type vertex 47 or n-type vertex 46. Further, the spiral portions 49a and 49b at both ends of the spiral cable support 41 are obtained by dividing the counterclockwise spiral portion 49 in half, and the spiral in the spiral cable support 1 according to the first embodiment described above. Similarly to the portions 5a and 5b, one counterclockwise spiral portion is formed in a row.

Looking at the section P ₄₁ of the helical cable support 41 in the direction from the left side of the axis 2 of Figure 8, as shown in FIG. 9, u type vertex 47, helical portion 48 of the arc 40 drawn about the axis 2 I bite inside. As a result, since the optical cable 12 can be passed through the space 45 between the u-type vertex 47 and the n-type vertex 46, the optical cable 12 is not bent into the space 45 indicated by two broken lines in FIG. The optical cable 12 can be routed from a direction perpendicular to the axis 2 and the spiral cable support 41 is shaken by wind or the like after the connection. Can be prevented.

Next, a spiral cable support according to a fourth embodiment of the present invention will be described with reference to FIGS.
The spiral cable support 51 according to the present embodiment, like the spiral cable support 41 according to the third embodiment described above, secures safety while placing importance on workability.

  As shown in FIG. 10, in the spiral cable support 51, the clockwise spiral portion 58a and the counterclockwise spiral portion 58b are connected to form the first spiral portion 58, and the clockwise spiral portion 59b and the counterclockwise spiral portion 59a are connected to each other. The second spiral portion 59 is formed, and the first and second spiral portions 58 and 59 are alternately arranged along the first axis (center axis) 60 of the clockwise spiral portion 58a and the counterclockwise spiral portion 59a. It is constructed continuously.

A section constituted by clockwise spiral portion 58a and P _51a, when the section constituted by the left-handed spiral portion 59a and P _52a, both sections P _51a, the length of the P _52a are equal. Further, a section constituted by the left-handed spiral portion 58b and P _51b, when the section constituted by the right-handed spiral portion 59b and P _{52 b,} both sections P _51b, the length of the P _{52 b} are equal.

The shapes of the clockwise spiral portion 58a and the counterclockwise spiral portion 58b of the two sections P _51a and P _51b and the shapes of the counterclockwise spiral portion 59a and the clockwise spiral portion 59b of the two sections P _52a and P _52b are u It is line-symmetric with respect to the mold vertex 57 or the n-type vertex 56.
The spiral portions 59c and 59d at both ends of the spiral cable support 51 are obtained by dividing the second spiral portion 59 in half, and the spiral portion 5a in the spiral cable support 1 according to the first embodiment described above. , 5b, one second spiral portion is formed in a row.

When the section P _51a and the section P _51b of the spiral cable support 51 are viewed from the left side of FIG. 10 in the direction of the first axis 60, as shown in FIG. Draws an arc centered on the second axis 61, and this arc has a curve opposite to the arc centered on the first axis 60 drawn by the clockwise spiral portion 58a. Draw a curve. For this reason, the optical cable 12 is passed through the space 55 indicated by two broken lines in FIG. 10 without bending the optical cable 12 from the direction perpendicular to the first axis 60 to the spiral cable support 51. Can do.

  Thereby, in addition to the effect similar to the spiral cable support 41 by the above-mentioned 4th Example, according to the allowable bending radius and bendability of the optical cable 12, it considers workability | operativity and safety individually. It becomes possible to do.

  That is, the size of the space 55 through which the optical cable 12 passes depends on the design of the radius and winding angle of the arc drawn by the clockwise spiral portion 58a and the counterclockwise spiral portion 59b with the first axis as the axis, and the optical cable 12 is changed to the spiral cable. It is possible to prevent the optical cable 12 from coming out of the spiral cable support due to workability when taking it into the support 51 or the influence of wind or the like.

The installation method of the spiral cable supports 31, 41, 51 and the method of passing the optical cable 12 according to the second to fourth embodiments are the same as those of the spiral cable support 1 according to the first embodiment described above. is there.
Further, the helical cable supports 1, 31, 41, 51 according to the first to fourth embodiments can also be used in a conventional wiring method such as the optical cable 12.

  As described above, the helical cable support of the present invention can be used to bundle and bundle a cable such as an electric wire or an optical cable, for example, for aerial support.

It is a perspective view which shows the structure of the helical cable support by the 1st Example of this invention. It is a front view which shows the wiring method in the spiral cable support tool 1 shown in FIG. The spiral cable support section P ₁ of 1 and segment P ₂ shown in FIG. 1 is a view from the left in the direction of the axis 2. It is a figure which shows the installation method of the helical cable support tool 1 shown in FIG. 1 with respect to the support line installed between support | pillars, such as a utility pole. It is a figure which shows the method of passing an optical cable through the helical cable support 1 installed with the installation method shown in FIG. It is a front view which shows the wiring method in the helical cable support by 2nd Example. The interval P ₃₁ of the helical cable support member 31 shown in FIG. 6 is a view from the left in the direction of the axis 2. It is a front view which shows the wiring method in the helical cable support by 3rd Example. The interval P ₄₁ of the helical cable support device 41 shown in FIG. 8 is a view seen from the left in the direction of the axis 2. It is a front view which shows the wiring method in the helical cable support by 4th Example. FIG. 11 is a view of a section P _51a and a section P _51b of the helical cable support 51 illustrated in FIG. 10 when viewed from the left in the direction of the first axis 60.

Explanation of symbols

1, 31, 41, 51 Spiral cable support 2 Axis 3 White arrow 4, 38, 48, 58a, 59b Right-hand spiral 5, 39, 49, 58b, 59a Left-hand spiral 5a, 5b, 39a, 39b, 49a, 49b Part of left-handed spiral portion 6, 36, 46, 56 n-type vertex 7, 37, 47, 57 u-type vertex 8, 9 Coupler 11 Support line 12 Optical cable 13, 14, 33, 34 Auxiliary line 15, 35, 45, 55 Space 20 Worker 21, 22 Prop 23 Closure 24 Bucket wheel 25 Bucket worker 26, 28 Ground worker 27 Insertion support rod 29 Cable drum 40 Circle 58 First spiral portion 59 Second spiral Portions 59c and 59d Part of second spiral portion 60 First axis 61 Second axis

Claims (9)

A helical cable support (1) for bundling cables (12) into a bundle,
The clockwise spiral (4) and the counterclockwise spiral (5) are alternately and continuously connected along the axis (2),
The portion where the counterclockwise spiral portion (5) is changed to the clockwise spiral portion (4) is an n-type apex (6), and the clockwise spiral portion (4) is the counterclockwise spiral portion (5). The part that changes to u is the u-shaped vertex (7),
The position of the n-type vertex (6) is above the position of the u-type vertex (7);
A first section (P ₁ ) constituted by the clockwise spiral (4) between the n-type vertex (6) and the u-type vertex (7), the u-type vertex (7) and the n When the second section (P ₂ ) constituted by the counterclockwise spiral (5) between the mold apex (6) is viewed in the direction of the axis (2), the clockwise spiral (4) and The counterclockwise spiral (5) draws a circle,
The first section the clockwise spiral portion (4) first central angle of the arc which is drawn between the n-type vertex (6) and the u-type apex (7) in (P ₁₎ (theta ₁₎ the counterclockwise spiral portion (5) a second central angle of the arc that is drawn (theta ₂₎ and not more than that equal and more than 360 ° 540 ° in the second period (P ₂₎ and,
A wavy space (15) parallel to the axis (2) is formed in the first and second sections (P ₁ , P ₂ ),
The cable (12) is bent from one end of the cable (12) partially into a wavy line, passes through the space (15), and from the direction perpendicular to the axis (2), the helical cable support (1 )
A helical cable support characterized by that. Said helical cable support (1) has the right-handed spiral portion (4) or the left-handed spiral portion (5) was divided in half helical portion (5a, 5b) respectively to both ends,
The spiral cable support (1) has connection members (8, 9) at both ends for connecting to the next spiral cable support,
The helical cable support according to claim 1, wherein: A helical cable support (31; 41) for bundling cables (12) into a bundle,
The clockwise spiral (38; 48) and the counterclockwise spiral (39; 49) are alternately and continuously connected along the axis (2),
The part where the left-handed spiral part (39; 49) changes to the right-handed spiral part (38; 48) is an n-type apex (36; 46), and the right-handed spiral part (38; 48) A portion that changes to the left-handed spiral portion (39; 49) is a u-shaped apex (37; 47),
The position of the n-type vertex (36; 46) is below the position of the u-type vertex (37; 47);
A first section (P) constituted by the clockwise spiral (38; 48) between the n-type vertex (36; 46) and the u-type vertex (37; 47). ₃₁ ; P ₄₁ ) And the second section (P) formed by the counterclockwise spiral (39; 49) between the u-type vertex (37; 47) and the n-type vertex (36; 46). ₃₂ ; P ₄₂ ) In the direction of the axis (2), the clockwise spiral (38; 48) and the counterclockwise spiral (39; 49) draw a C-shaped arc,
The first section (P ₃₁ ; P ₄₁ ) In the clockwise spiral portion (38; 48) drawn by the first central angle (θ ₃₁ ) And the second section (P ₃₂ ; P ₄₂ ) In the left-handed spiral portion (39; 49), the second central angle (θ ₃₂ ) And is equal to or greater than 270 ° and less than 360 °,
The first and second sections (P ₃₁ , P ₃₂ ; P ₄₁ , P ₄₂ ) To create a linear space (35; 45) parallel to the axis (2),
The cable (12) is passed through the space (35; 45) without being bent and passed through the spiral cable support (31; 41) from a direction perpendicular to the axis (2).
A helical cable support characterized by that. The first section (P ₄₁ ) In the direction of the axis (2), the u-shaped apex (47) is located inside the C-shaped arc (40) drawn by the clockwise spiral portion (48) with the axis (2) stopped. The helical cable support according to claim 3, wherein the helical cable support bites into the cable. The spiral cable support (31; 41) has a spiral portion (39a, 39b; 49a, 49b) in which the clockwise spiral portion (38; 48) or the counterclockwise spiral portion (39; 49) is divided in half. At both ends,
The spiral cable support (31; 41) has connection members (8, 9) for connecting to the next spiral cable support at both ends, respectively.
The helical cable support according to claim 3 or 4, characterized by the above. A helical cable support (51) for bundling cables (12) into a bundle,
A first spiral portion (58) formed by connecting the first clockwise spiral portion (58a) and the first counterclockwise spiral portion (58b), a second clockwise spiral portion (59b), and a second left spiral portion The second spiral portion (59) formed by connecting the spiral spiral portions (59a) is a first axis of the first clockwise spiral portion (58a) and the second counterclockwise spiral portion (59a) ( 60), and alternately connected continuously along
The first left-handed spiral portion and the second right-handed spiral portion and (58b) and (59b), but is formed about said first axis (60) parallel to the second axis (61) And
A portion where the second counterclockwise spiral portion (59a) changes to the first clockwise spiral portion (58a) is an n-type apex (56), and the first counterclockwise spiral portion (58b) Is a u-shaped apex (57) where the second right-handed spiral portion (59b) changes,
The first section (P _51a ) constituted by the first clockwise spiral portion (58a) and the second section (P _51b ) constituted by the first counterclockwise spiral portion (58b) are referred to as the first section (P _51b ). When viewed in the direction of one axis (60), the first counterclockwise spiral (58b) on one side of the u-shaped apex (57) is centered on the second axis (61), and Draw an arc having a curve opposite to the arc centered on the first axis (60) drawn by the first clockwise spiral (58a);
A third section (P _52a ) constituted by the first and second sections (P _51a , P _51b ) and the second counterclockwise spiral section (59a ) and the second clockwise section (59b) ) creates a space (55) of said first axis (60) and parallel straight to the fourth section and (P _{52 b)} constituted by,
The cable (12) is passed through the space (55) without bending, and is passed through the spiral cable support (51) from a direction perpendicular to the first axis (60).
A helical cable support characterized by that. It said helical cable support (51) has each of the first helical portion (58) or the second helical portion divided into spiral portion (59) half (59c, 59d) at both ends,
The spiral cable support (51) has connection members (8, 9) at both ends for connecting and extending with the next spiral cable support, respectively.
The helical cable support according to claim 6, wherein: A cable routing method for routing a cable (12) to a helical cable support (1) according to claim 1 or 2 ,
Said cable (12), the cable (12) at one end partially through wavy bending while the wavy space (15) from the axis (2) direction or al before Symbol spiral perpendicular to Continue to the cable support (1) .
A cable wiring method characterized by the above. A cable routing method for passing a cable (12) through the helical cable support (31; 41; 51) according to any one of claims 3 to 7,
Said cable (12), a space without the straight bending through (; 45 35 55), said axis (2) or said first axis (60) direction or al before Symbol spiral perpendicular to continue to Tsusen to (51 31; 41), the cable support
A cable wiring method characterized by the above.

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