JP4691452B2 - Seismic cable support device - Google Patents

Description

The present invention automatically cuts various cables that are stored and supported in a pipeline that may be generated due to the sinking of the pipeline caused by an earthquake, etc. release, to supporting lifting apparatus seismic cable can be prevented and prevention by stretching.

  In the cable burying method in which pipes are laid through handballs etc. that are buried underground, and various cables are stored and inserted in the pipes, they are submerged due to changes in the support form due to soft ground, liquefaction due to earthquakes, etc. The buried pipeline may sink and move. As this subsidence, movement, etc., various cables such as optical fibers and power / communication lines housed and supported in the pipeline are pulled and pulled. For example, the extra length corresponding to is set inside a hand hole or the like, and is held in a spiral shape, for example.

  The holding form supports, for example, a plurality of pin-shaped support fittings projectingly arranged on the inner wall surface of the handhole so as to be wound largely, and is tied and fixed to these support fittings to prevent falling off. . According to this holding form, when the cables wired in the pipeline connected to the hand hole are drawn, the drawing is interrupted at the binding site with the support fitting, and the set extra length remains in the pipeline. May not be fully drawn into and may be cut off.

In order to solve such a problem, for example, “Cable seismic solution: Seismic receipt” as disclosed in Patent Document 1 has been proposed. For example, this seismic metal support supports the cables in a winding form between a pair of arm-shaped metal objects protruding and fixed on the side wall surface in the hand hole, and the metal mounting part fixed to the side wall surface, A plurality of binding portions that are substantially C-shaped in cross section are connected to each other, and the extra length portions of the cables that are wound are inserted into the binding portions to support them. When a force for pulling the cable into the pipe line due to ground subsidence or the like is applied, the wound extra length part is detached from the binding part, and the extra ring is unwound and drawn into the pipe line.
Catalog issued by Nippon Comsys Co., Ltd.

  However, according to such a seismic receiver, a cable-like slip prevention part is formed in the insertion part of the cables to the bundling part so as to prevent the cable itself from slipping and easily come off. The supporting part of the cable is fixed to slide on the receiving object. For this reason, when a pulling force acts on the cable, if the sliding with the received object and the unbundling from the bundling portion are not smoothly performed, the ring of the binding may not be unwound and may be entangled with the received object. If it is entangled with the received item, the pull-in by the preset extra length becomes insufficient, and there is room for the cables to be cut.

Therefore, the present invention was created in view of the conventional circumstances as described above, and the purpose thereof is, for example, when a cable is pulled out and stretched due to ground subsidence, and the extra length of winding that is held in a wound shape is held. An object of the present invention is to ensure the unwinding action and to smoothly draw the cables into the pipeline and to prevent the cables from being cut. And to provide supporting stability of the winding state of the extra length, the supporting lifting apparatus seismic cable that attained the ease of supporting the work.

In order to solve the above-described problem, in the seismic cable supporting method according to the present invention, the extra length is set in advance so that the cables C housed and inserted in the pipe W are drawn into the pipe W, The surplus length is wound and held in the vertical direction, and the upper half of the wound turn portion is inserted and supported in the long cable holder 1 having a groove shape in the section of the lower opening, The turn part is forcibly removed directly from the cable holder 1 by the pulling force of the cables C in the pipe W and is extended.
The upper half of the turn part has a straight part with adjustable length and a curved part that is almost a quarter circle at both ends of the straight part. It is.
In addition, in the seismic cable support device, the cross-section that holds the cable C for the extra length of the winding that is drawn into the pipe W has a substantially groove shape, and the flexure grooves 5 are formed on the left and right side walls. The long cable holders 1 that are arranged, the shape-retaining means 6 that holds the turn form of the cable holder 1 itself, and the cable holder 1 with the opening of the cable holder 1 facing inward of the turn form In the state, it is provided with the fixing means 10 which fixes to the wall surface of the accommodation place which accommodates and holds the cables C for the extra length.
In the cable holder 1, the inner diameter of the holder main body 2 is slightly larger than the outer diameter of the cables C, and the opening width at the opening edge is smaller than the outer diameter of the cables C.
The shape retaining means 6 forms a shape retaining portion 7 projecting outward from the holder main body 2 in the holder main body 2 of the cable holder 1, and inserts the shape retaining core 8 into the shape retaining portion 7. Become.
The fixing means 10 includes a support arm member 11 projectingly arranged on the wall surface of the housing place for housing the cables C, a fixing member 12 for fixing the cable holder 1 to the support arm member 11, and a surplus length corresponding to a plurality of turns. A plurality of cable holders 1 are arranged adjacent to each other and adjoining arrangement members 15 are arranged and fixed.
The adjacently arranged material 15 includes a connecting bolt material 17 inserted through the connecting hole 16 opened in the shape retaining portion 7 of the plurality of adjacently arranged cable holders 1, and screws connected to the connecting bolt material 17. And a positioning nut member 18 for positioning the shape retaining portion 7 of the holder 1.
The cable holder 1 can be separated and arranged before and after the turn portion, and can be connected by a shape-retaining core material 8 inserted in the shape-retaining portion 7.

In the seismic cable support method and the support device according to the present invention configured as described above, the extra length of the wound state of the cables C that are retractable into the pipe W and stored in the storage location is For example, when the cable is pulled into the pipe W due to ground subsidence or the like, it is taken out directly from the opening of the cable holder 1 and the ring of the turn part is automatically unwound to follow the pull-in.
The long cable holder 1 having a groove shape in the section of the lower opening inserts and supports almost the upper half of the wound turn portion, and when the pulling force of the cables C from the inside of the conduit W acts, The turn part is forcibly removed directly from the cable holder 1 toward the inward side of the turn part, and is extended following the drawing force. Removal of the cables C from the cable holder 1 at this time is because the flexure grooves 5 in the cable holder 1 divide the left and right side walls at predetermined intervals. The class C is smoothly taken out from the cable holder 1. And the unraveling of the turn part ring smoothly follows the pulling action because the upper half of the turn part is supported and the lower half is in a free state.
The shape-retaining means 6 retains the straight shape portion and the curved shape portion of the cable holder 1 that are curved in accordance with the turn form by having the flexure grooves 5 on the left and right side walls as they are. The shape-retaining core material 8 of the shape-retaining means 6 is inserted into the shape-retaining portion 7 that protrudes outward from the cable holder 1, so that it does not interfere with the cables C that are supported in the cable holder 1.
The fixing means 10 holds the extra length of the cables C supported in a turn shape while maintaining the turn form on the wall surface of the accommodation place via the cable holder 1 and fixes and supports a plurality of turns in an adjacent state. .
The adjacent arrangement material 15 is formed by inserting the connecting bolt material 17 through the shape retaining portions 7 of the plurality of cable holders 1 and screwing them with the positioning nut material 18 so that the plurality of adjacent cable holders 1 are adjacent to each other. Position in parallel and support and fix.
The cable holders 1 separated and arranged at the turn part are connected to each other by the positioning nut member 18 so that the turn part is set to a predetermined length and the length as the extra length is adjusted and set.

  Since the present invention is configured as described above, for example, when the cables C are pulled out and extended due to ground subsidence, the unwinding action for the extra length held in the winding turn shape is ensured, The cable C is smoothly drawn into the pipe W without being entangled. Since the cable is smoothly drawn regardless of the twist of the turn portion, it does not become an obstacle to the drawing into the pipe W, and the cables C can be prevented from being cut. Further, the support stability in the wound state for the extra length and the ease of the support work can be achieved, and the work can be performed efficiently.

  That is, in the present invention, when the extra length of the cables C to be drawn into the conduit W is wound and held in the vertical direction, the upper half of the wound portion is substantially cross-sectionally viewed from the lower opening. It is a groove-like long shape and is inserted and supported by being held in a cable holder 1 in which flexible grooves 5 are arranged on left and right side walls, and the opening of the cable holder 1 is directed inward in a turn form. This is because, in this state, the fixing means 10 is used to fix the cable C for the extra length to the wall surface of the storage place. As a result, the necessary extra length can be secured by setting the number of turns, and by taking out and removing from the cable holder 1 when it is pulled out, facilitating the drawing into the pipe W, etc., for example, ground subsidence Sometimes, when the cables C are pulled in, the disconnection or the like is prevented, and the communication or the like is secured.

  Further, the cable holder 1 has a substantially groove shape in a cross section that holds the cable C for a wound extra length drawn into the pipe W, and is formed by arranging the flexible grooves 5 on the left and right side walls. Since it is a scale, the extra length can be reliably held, for example, in a turn-like winding state. Moreover, the cable holder 1 itself is divided in half by a predetermined interval by the arranged flexure grooves 5, and each of the divided portions exhibits its own elasticity, and when the held cables C are removed, the divided portions Each of the turn portions that are sequentially expanded and wound are smoothly unwound, and the cables C are drawn into the pipe W without following each other. In addition, when the turn portion is held in the cable holder 1, the cables C may be inserted directly or forcibly directly from the opening of the cable holder 1, and the operation can be efficiently performed.

  The turn part wound as the extra length has a semi-oval shape as a whole, with a straight part with adjustable length at the upper half and a curved part that becomes a semi-circular shape at both ends of this straight part. Half of it hangs down in a free state, so that the opening of the cable holder 1 is inwardly directed to the inside of the turn part, and when the cable W is pulled into the pipe W, the ring of the turn part is quickly unwound. be able to.

  Since the cable holder 1 is provided with a shape-retaining means 6 for holding the turn form of the cable holder 1 itself, the turn shape of each of the straight part and the curved part when holding the cables C held in a wound form is provided. Can be held. Since the shape-retaining means 6 has a shape-retaining core 8 inserted in a shape-retaining portion 7 projecting from the holder main body 2, it is integrated with the holder main body 2 and reliably maintains its turn form. In addition, the shape-retaining core 8 itself that has been moved out from the shape-retaining portion 7 can be connected to each other when the cable holder 1 is separated and arranged, for example, a linear portion when being wound and accommodated is set to an arbitrary length. Yes, it can accommodate the length adjustment for the extra length.

  The cable holder 1 itself can be fixed to a storage place such as a wall surface in the hand hole H through the fixing means 10, and the adjacent arrangement member 15 can reliably hold the adjacent arrangement when forming a plurality of parallel turns. it can. At this time, the adjacent arrangement members 15 are adjacent to each other because the connection bolt members 17 are inserted through the connection holes 16 in the shape retaining portions 7 of the plurality of cable holders 1 and screwed and positioned by the positioning nut members 18. The cable holder 1 can be supported and fixed in parallel in the adjacent direction.

  In addition, the code | symbol in each item of the means for solving said subject and the effect of invention was added in order to make easy reference with the part which shows each structure part described in drawing. The present invention is not limited to the structure and shape indicated by the reference numerals in the drawings.

  The best mode for carrying out the present invention will be described below with reference to the drawings. Reference numeral 1 shown in the drawing is a long cable holder, which is supported on the side wall of the hand hole H in the hand hole H having a predetermined volume, shape and structure, for example. The cable holder 1 itself is a groove structure having a substantially Ω-shaped cross section that holds a cable C such as a communication cable such as an optical fiber and a power cable, and allows the cables to be taken in and out directly through the opening. A large number of slit-like flexure grooves 5 are formed on the side wall portion from the opening edge. That is, the cable holder 1 accommodates the cables C having a substantially circular cross section, so that the inner diameter of the holder body 2 is slightly larger than the outer diameter of the cables C, and the opening width at the opening edge is that of the cables C. It is smaller than the outer diameter. In the state where the opening portion of the cable holder 1 is directed downward, the insertion-supported cables C do not come out of the cable holder 1 due to their own weight or the like, but the opening portion is removed by direct removal such that the cable holder 1 is forcibly extracted. It has been expanded so that it can be removed directly.

  At the opening edge of the cable holder 1, the cable C is somewhat squeezed inward to allow the cables C to enter and exit directly inside and outside the cable holder 1, and the edge itself is warped outwardly. The guide part 3 may be formed. The shape of the guide part 3 may be a knob shape having a substantially circular cross section at the left and right opening edges of the cable holder 1. In short, the cable C is smoothly taken in and out, and the cable C is prevented from being damaged when being taken in and out. It is enough if you let it.

  The flexure grooves 5 formed on the side wall of the holder body 2 are almost equally spaced in the drawing, for example, the distance is about 20 to 40 mm, the groove width is about 2 to 5 mm, and extends over the entire left and right side walls of the cable holder 1. Are arranged. The bending groove 5 is set so that the depth from the opening edge of the cable holder 1 itself is about 3/5 of the depth or inner diameter of the holder body 2, and the cable holder 1 is shown in FIG. It is bent toward the opening side of the cable holder 1 in the length direction. Further, the cable holder 1 itself is divided into half for each bending groove 5, and the smoothness of the direct removal of the cables C from the cable holder 1 described later is also taken into consideration. The depth and width of the flexure grooves 5 themselves, and the arrangement interval between the flexure grooves 5 are not limited to the illustrated examples, and can be selected as appropriate.

  Further, the cable holder 1 is provided with a shape-retaining means 6 that holds the posture / body posture of the cable holder 1 itself, for example, a straight shape or a curved shape. The shape-retaining means 6 in the illustrated example protrudes in a bulge shape from the holder main body 2 in the cable holder 1 (on the side opposite to the opening) to the outside of the holder main body 2 through a constricted portion in some cases. The formed shape-retaining portion 7 having a cylindrical shape or a groove shape is formed, and the shape-retaining core material 8 is inserted into the shape-retaining portion 7. The shape-retaining portion 7 has a substantially rectangular shape in cross section, and the shape-retaining core member 8 is a long material such as a rod or wire having an outer diameter corresponding to the inner width of the shape-retaining portion 7. The shape-retaining core material 8 itself is, for example, a stainless steel bar material that can be bent together with the cable holder 1 by an operator's manual work and has flexibility and rigidity that can maintain the bent state as it is. The shape-retaining core material 8 may be bent by mechanical processing in advance at the factory site without being able to be bent by manual work or the like in accordance with the on-site situation at the work site.

  For example, when the extra length of the cables C is set in a predetermined hand hole H, the cable holder 1 is supported by winding the extra length on the side wall of the hand hole H. It is fixed by the fixing means 10. The fixing means 10 for this purpose includes a support arm member 11 protrudingly arranged on the side wall of the hand hole H, a fixing member 12 for fixing the cable holder 1 to the support arm member 11, and a plurality of turns for the extra length. And a plurality of cable holders 1 arranged adjacent to each other in an adjacent state.

  The support arm member 11 is provided so as to protrude from the side wall surface of the handhole H to a pin shape, a rod shape, a bar shape, a plate shape, or the like with a predetermined length. In the drawing, it is projected into the hand hole H by engaging with the positions of a number of mounting holes in the receiving metal fitting P fixed to the side wall of the hand hole H in the vertical direction. Of course, the support arm member 11 may be arranged and fixed directly on the side wall.

  As shown in FIG. 5, the fixing member 12 is formed in the shape of a string, a band, a narrow band, or a wire that fastens and fixes the cable holder 1 to the support arm member 11. At the time of fastening, the cable holder 1 placed in contact with the lower surface of the support arm member 11 is tied and fixed by inserting the fixing member 12 into the support hole 13 opened in the shape retaining portion 7, for example. The fixing member 12 is formed in the fixing member 12 itself by inserting the support hole 13 so as to suspend the holder main body 2 via the shape retaining portion 7 and surround the support arm material 11 one or more times. It is sufficient to fix by slide fixing with a plurality of rows of ratchet teeth, or by twisting, binding or the like. In addition, the shape-retaining core material 8 inserted into the shape-retaining portion 7 is omitted at the portion supported by the fixing member 12.

  Although not shown, the insertion space is secured in the cable holder 1 on the opening side of the cables C by being inserted into the flexure grooves 5 in the left and right side wall portions of the holder body 2 and fixed to the support arm member 11. Is also possible. That is, the cable holder 1 is fastened and fixed to the support arm member 11 at the opening side of the cable holder 1 so that the cables C can be directly inserted and removed.

  When the cables C are turned a plurality of times to set the surplus length, an adjacent arrangement member 15 is prepared for holding the cable holder 1 held for each of the plurality of turns in an adjacent state. As shown in FIG. 6, the adjacently arranged member 15 in the illustrated example includes a connecting bolt material 17 that penetrates the connecting hole 16 that is opened in the shape retaining portions 7 of the plurality of cable holders 1 that are adjacently arranged, and this connecting bolt. And a positioning nut member 18 that is screwed to the member 17 to position the shape retaining portion 7 of each cable holder 1. The adjacent arrangement material 15 is positioned at both ends, the center, etc. of the cable holder 1 in the cable holder 1 for each turn when the cables C are wound in a winding shape, and penetrates the adjacent cable holders 1. Dispose by inserting. By maintaining the distance between the cable holders 1, vibration, shaking, and the like of the cable holder 1 when the extra length of the cables C is removed from the cable holder 1 are prevented, and smooth pull-out is possible.

  The connecting hole 16 can also be used as the support hole 13 or can be substituted. The connecting bolt material 17 is set longer than the width of the entire adjacent cable holder 1. In the illustrated example, the positioning nut material 18 is screwed into the connecting bolt material 17 in pairs for each cable holder 1 at both sides of the shape retaining portion 7 in the cable holder 1, and is pressed against both sides of the shape retaining portion 7. Yes. In addition, the shape-retaining core material 8 inserted into the shape-retaining portion 7 is omitted at a portion supported by the adjacent arrangement material 15.

  In addition, although not shown in the drawings, it is possible to use an adjacent arrangement material that is fitted between the cable holders 1. For example, a connecting protrusion which is inserted into one end opening of a cylindrical connecting tube portion fixed in the adjacent direction to the end portion of the shape-retaining means 6 into the other end opening of the adjacent connecting tube portion. The part is fixed. When the cable holder 1 that holds each turn portion of the cables C is fixed to the support arm member 11 adjacently, the fitting type adjacent arrangement material at the end of the support arm member 11 located at the end of the shape-retaining curved portion of the cable holder 1 They are connected to each other by fitting the male and female of the connecting cylinder part and the connecting protrusion, and the cable holders 1 are arranged adjacent to each other.

  Further, although not shown, for example, a plurality of cable holders 1 corresponding to a predetermined number of turns of 2 to 3 turns may be connected in advance. For example, in the cable holder 1 corresponding to a predetermined number of adjacent ones, the ends of the plurality of cable holders 1 are connected and fixed by connecting pieces or the like to form a plurality of stations.

  FIG. 7 shows an example in which the length of the straight line portion in the turn form of the cables C can be adjusted. That is, the cable holder 1 is extended and arranged in a straight line portion located at the upper position when the cable holder 1 is supported. As shown in the drawing, the cable holder 1 having a predetermined length is appropriately curved and arranged before and after the wound storage portion of the storage location, and the front and rear cable holders 1 are connected to each other by the shape-retaining core member 8. As a result, the exposed shape-retaining core material 8 is appropriately supported and fixed at the storage location.

  Although not shown in the drawing, the ends of the cable holders 1 arranged at the front and back at the position of the straight line portion can be slidably overlapped with each other so as to be connected and fixedly supported. Therefore, for example, the shape-retaining core material 8 portion of the shape-retaining means 6 in the cable holder 1 at this slide overlap portion is exposed, and this exposed portion is overlapped with each other at a predetermined length at a position opposite to the opening of the cable holder 1. You may join together. Further, the cable holders 1 arranged in the front and rear directions may be connected to each other by a rigid material for the shape-retaining core material 8 generation.

  Next, an example of the use of this will be described. For example, in a pipe W constructed in connection with a bridge supporting ground, soft ground or other places where land subsidence is expected, extra lengths of various cables C such as optical fibers accommodated in the pipe W The extra length is set and supported along the vertical direction in, for example, the hand hole H that stores the minute.

  That is, a number of cable holders 1 corresponding to the number of turns corresponding to the extra length are fixed to the supporting arm member 11 projectingly supported on the side wall surface in the hand hole H via the fixing member 12, and adjacent cable holders 1 are mutually connected. Is arranged and fixed via the adjacent arrangement member 15, and the opening of the cable holder 1 is directed downward in the vertical direction, that is, inward of the turn portion. At this time, the cable holder 1 is formed so that it corresponds to about the upper half of the turn portion that is the winding portion for the extra length, and the entire straight portion and the curved portion that is substantially a quarter circle at both ends of the straight portion are semi-oval. Shape to present. On the other hand, the upper half of the turn portion is opened in the cable holder 1 from the opening portion while twisting the turn portion corresponding to the extra length from the insertion portion with the pipe W connected to the hand hole H. Even if it is forcibly expanded, it is inserted directly, and the lower half is left free to hang down. Further, both ends of the extra length are continuous with the cables C in the pipe W through a pipe W opening formed in the lower portion of the hand hole H, for example, in the vicinity of the bottom in the hand hole H (FIG. 1). FIG. 2).

  When the cables C are pulled in this supported state due to ground subsidence, for example, the cables C are pulled out directly from the opening of the cable holder 1 without sliding due to the pulling force of the cables C into the duct W. Are sequentially drawn and drawn into the pipe W. That is, as shown in FIG. 2, the cable C portion of the pipe W port to be drawn is drawn in the first stage, and the curved end portion of the cable holder 1 located on the opposite side of the pipe W port in the second stage. The cable C part held by the detachment downward. In the third stage, the cables C held by the straight part of the cable holder 1 are detached, and in the fourth stage, the cables C held by the curved end of the cable holder 1 on the side of the duct W are downward. The cable C for one turn is unwound and stretched. Next, in the same manner, the next adjacent one turn of the cable C is unwound and stretched, the turn portions are sequentially unwound, and the necessary length is drawn. At this time, the twist applied to the cables C is absorbed by the cables C in the sufficiently long pipe W.

It is a partially cutaway perspective view showing the best mode for carrying out the present invention. It is the whole front view at the time of support similarly. It is a principal part front view of the notch of a cable holder similarly. It is sectional drawing similarly. It is a principal part front view explaining the support form with respect to the supporting member of a cable holder similarly. Similarly, it is an explanatory schematic diagram when a plurality of cable holders are supported adjacently, (a) is a plan view, and (b) is a side view. It is a front view when using and supporting a cable holder in an extended state.

Explanation of symbols

C ... Cables H ... Hand hole P ... Receiving bracket W ... Pipe line 1 ... Cable holder 2 ... Holder body 3 ... Guide part 5 ... Deflection groove 6 ... Shape retaining means 7 ... Shape retaining part 8 ... Shape retaining core material 10 ... Fixing means 11 ... support arm member 12 ... fixing member 13 ... support hole 15 ... adjacent arrangement material 16 ... connection hole 17 ... connection bolt material 18 ... positioning nut material

Claims (5)

A long cable holder that has a groove shape in the cross-section that holds the cable for the extra length of the coil that is drawn into the conduit, and the flexible grooves are arranged on the left and right side walls, and the cable holder itself The shape-retaining means that holds the turn form and the cable holder are fixed to the wall surface of the accommodation place that accommodates and holds the extra length of cables with the opening of the cable holder facing the inside of the turn form. Fixing means, and the shape retaining means is formed by forming a shape retaining portion projecting outward from the holder body in the holder body of the cable holder, and inserting a shape retaining core into the shape retaining portion. A device for supporting an earthquake resistant cable. The apparatus for supporting a seismic cable according to claim 1, wherein the inner diameter of the holder body is slightly larger than the outer diameter of the cables, and the opening width at the opening edge is smaller than the outer diameter of the cables. . The fixing means includes a support arm member projectingly arranged on the wall surface of the housing place for housing the cables, a fixing member for fixing the cable holder to the support arm member, and a plurality of turns when the extra length is a plurality of turns. The apparatus for supporting an earthquake-resistant cable according to claim 1 or 2, comprising an adjacent arrangement material for arranging and fixing the cable holder in an adjacent state. The adjacently arranged material includes a connecting bolt material penetrating through a connecting hole opened in a shape retaining portion of a plurality of adjacently arranged cable holders, and a shape retaining portion of each cable holder screwed to the connecting bolt material. The apparatus for supporting an earthquake-resistant cable according to claim 3, further comprising a positioning nut member for positioning. The apparatus for supporting an earthquake-resistant cable according to any one of claims 1 to 4, wherein the cable holder is arranged separately before and after the turn portion and can be connected by a shape-retaining core member inserted into the shape-retaining portion.

Images