JPH073238U - Temporary cable holder - Google Patents

Abstract

(57) [Summary] [Purpose] To temporarily retain existing cables when modifying a manhole or the like, and to retain the cables temporarily so that they can be reused many times. [Structure] A temporary cable holder that holds an existing cable when a manhole is modified, and has a pair of support plates provided with cable receiving claws. The support plates are connected to each other by a space holder whose space can be adjusted. In addition, a hanging piece is provided on the upper part of the support plate, and a height-adjustable supporting leg is provided on the lower part.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cable temporary holding tool used as a tool for temporarily holding an existing cable when expanding a manhole or a handhole.

[0002]

[Prior art]

 Manholes and handholes may be widened to increase the capacity of cables. In this work, the existing cable is held, the surrounding concrete frame is dismantled and removed, and then a new hole frame is installed and concrete is placed.

[0003] In such a manhole remodeling, a work for holding and protecting an existing cable has conventionally been performed by using a square bar or a wire. In other words, the timber is carried into the manhole, the temporary cable mount is assembled and constructed on the concrete foundation, and the cable is fixed to the center of the hole by a numbered wire. In this state, the concrete side wall was dismantled and removed, and then the entire cable temporary stand was lifted and supported to expand the basic concrete and install the side wall slab construction formwork for widening modification.

[0004]

[Problems to be solved by the device]

 However, in the conventional cable holding method, since the pedestal is constructed and the cable fixing process is performed by using the square bar and the wire, the workability is poor and the strength is also problematic. Moreover, since the temporary holder for holding the cable is disassembled with one use, the material used is wasted.

The object of the present invention is to pay attention to the above-mentioned conventional problems, and it is possible to very easily and efficiently perform the temporary holding work of the existing cable at the time of remodeling the manhole or the like, and it is possible to divert it many times. The purpose is to provide a temporary cable retainer that can be temporarily retained at a low cost.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, a temporary cable retainer according to the present invention is a temporary cable retainer that retains an existing cable when a manhole is rebuilt, and includes a pair of support plates having cable receiving claws. The support plates are connected to each other by a space retainer capable of adjusting the space, a hanging piece is provided on the upper part of the support plate, and a height adjustable support leg is provided on the lower part.

[0007]

[Action]

 According to the above configuration, the pair of support plates are inserted to the outside of the existing cable, the support legs are first erected on the foundation concrete, and the cable receiving claws hold the cable, and the two are connected by the spacing holder. It is possible to lift the entire cable above the foundation concrete by operating the spacing tool to move the cable to the center and lifting it into the manhole with a hanging hardware. This makes it easy to temporarily hold the existing cable and perform centering and lifting operations for the cable. Since such a cable temporary retainer can be easily disassembled and assembled, the cable temporary retainer work can be directly started, and since it can be used any number of times, the workability can be greatly improved and the cost can be reduced. It can have an advantage in terms of aspect.

[0008]

【Example】

 Hereinafter, a specific embodiment of the temporary cable retainer according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view showing a usage state of the temporary cable holder 10 according to the embodiment. As shown in the figure, it has a pair of support plates 14 arranged so as to sandwich the existing cable 12. The support plate 14 is formed of a metal strip material, and a receiving claw 16 for mounting and holding the cable 12 is provided at an intermediate height position on the inner surface side facing the cable 12. At a lower portion of such a pair of cable support plates 14, a space holder 18 is attached for connecting the two to each other to form a U-shaped frame.

As shown in FIG. 2, the space holder 18 has a large-diameter pipe 20 whose end face is pin-fixed to one support plate 14, and an end face which is similarly pin-fixed to the other support plate 14. The small-diameter pipe 22 and the small-diameter pipe 22 are inserted into the large-diameter pipe 20 so that the small-diameter pipe 22 can be expanded and contracted as a telescopic structure. On the small-diameter pipe 22 side, a plurality of pin holes 24 penetrating in the diametrical direction are formed at intervals in the longitudinal direction of the pipe, and the large-diameter pipe 20 has one pin hole 26 that can be aligned with the pin hole 24. Is penetrated by the section. A connecting pin 28 is provided to be inserted into the pin holes 24 and 26, and the connecting pin 28 is fitted into the pin holes 24 and 26 which are aligned at the overlapping portion of the large diameter pipe 20 and the small diameter pipe 22. Both pipes 20 and 22 are connected. Therefore, the gap between the pair of support plates 14 can be adjusted by adjusting the insertion depth of the small diameter pipe 22. The large-diameter pipe 20 and the small-diameter pipe 22 are attached to the support plate 14 by pin fixing. In this, the insertion protrusions 27 are formed on the end faces of the pipes 20 and 22, and the support plate 14 is formed. The pin 29 is fixed so that the pin 29 does not come off while being inserted into.

Further, a hanging hardware 30 is attached to the upper portion of the support plate 14. As shown in detail in FIG. 3, this is constituted by a turnbuckle mechanism, and a lower bolt 32 bent in an L shape so as to be fixed to the support plate 14 and an upper hook bolt 34 are connected by a turnbuckle 36. The total length of the hanging hardware 30 is variable by rotating the turnbuckle 36. A hanging rope 38 or the like is hooked on the hook bolt 34 to lift the cable 12 together with the support plate 14. A bent portion of the lower bolt 32 is inserted into the support plate 14 to prevent the lower bolt 32 from coming off with a pin 39.

Further, a support leg 40 whose height can be adjusted is provided below the support plate 14. As shown in FIG. 4, this has a telescopic structure having a lower leg outer cylinder 42 and an upper leg inner cylinder 44 fitted therein. In order to make the leg length variable, a plurality of pin holes 46 penetrating in the diametrical direction are formed on the side of the small-diameter leg cylinder 44 on the side of the small-diameter leg cylinder 44 at intervals in the longitudinal direction of the pipe. A pin hole 48, which can be aligned with the pin hole 46, is formed in the cylinder 42 at a position above the tip. A connecting pin 50 is provided which is inserted into the pin holes 46 and 48. The connecting pin 50 is fitted into the pin holes 46 and 48 which are aligned at the overlapping portions of the tubes 42 and 44, so that both tubes can be inserted. 42 and 44 are connected. Therefore, the total length of the support leg 40 can be adjusted by adjusting the insertion depth of the leg inner cylinder 44. A bifurcated bracket 52 is projectingly provided at the upper end portion of the support leg 40, that is, the upper end surface portion of the leg inner cylinder 44, and the lower end of the support plate 14 is inserted between them to be connected by a connecting bolt 54 to support the support. The legs 40 are attached to the lower portion of the support plate 14. Also, a flange 56 is provided on the lower end surface of the support leg 40 so that it can be erected on the foundation concrete when in use.

An example of using the temporary cable holder 10 having such a configuration will be described with reference to FIG. The existing cable 12 is arranged along the wall surface in the manhole 58 to be modified, and the support plate 14 is inserted between the existing cable 12 and the manhole 58 as shown in FIG. The cable 12 is replaced on the receiving claw 16. During this relocation, the spacing holder 18 is adjusted so that the relocated cable 12 is brought closer to the center side of the manhole. In this case, the support plate 14 is received from the foundation concrete 60 via the lower support leg 40. The upper part of the cable 12 is protected by a protective plate 62 such as a sheet pile (FIG. 5 (2)), and the upper slab 64 of the manhole 58 is destroyed. Then, as shown in FIG. 5 (3), the hanging hardware 30 is attached to the upper part of the support plate 14, and the rope 38 hung from the beam 66 provided on the ground side is hooked and the support legs 40 are attached. Remove it and suspend it. Then, the outer portion of the temporary cable retainer 10 is protected by the veneer plate 68 or the like, and the side wall 70 of the manhole 58 and the basic concrete 60 are destroyed.

After that, as shown in FIGS. 5 (4) to 5 (5), the foundation concrete of the new manhole is placed, and the supporting leg 40 is reattached to the lower portion of the temporary cable retainer 10 to suspend it. Change from receiving state to receiving state. The manhole side walls and the upper slab are placed by supporting work and assembly of the formwork, and finally the cable 12 temporarily held on the new cable support frame is replaced, and the work is completed.

With such a configuration, temporary holding of the existing cable 12 necessary for remodeling the manhole 58 can be performed very easily, and the cable suspension required to remove and destroy the basic concrete 60 from the supporting state of the basic concrete 60. The transition to retention can be easily implemented. Therefore, it is possible to realize the modification work while effectively protecting the existing cable 12, and it is possible to significantly improve the work efficiency. In particular, the temporary cable holder 10 is easily assembled and disassembled, and can be diverted many times, so that the cost reduction effect is high, the dimensional adjustment is easy, and the contribution to shortening the construction period is large.

[0016]

[Effect of device]

 As described above, according to the present invention, a temporary cable retainer for retaining an existing cable at the time of remodeling a manhole or the like is provided with a pair of support plates having cable receiving claws, and the support plates are spaced from each other. In addition to connecting with adjustable spacing holders, a hanging piece was provided on the upper part of the support plate, and a height adjustable support leg was provided on the lower part. Can be performed very easily and efficiently, and it has the excellent effect of being able to be diverted many times and temporarily holding the cable at low cost.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which a temporary cable holder according to an embodiment is used.

FIG. 2 is a detailed side view of a space holder of the cable temporary holder.

FIG. 3 is a detailed view of a hanging piece of the temporary cable holder.

FIG. 4 is a detailed side view of a support leg portion of the cable temporary holder.
It is a partial top view and a partial side view.

FIG. 5 is a process explanatory view of the manhole remodeling work using the cable temporary holding tool.

[Explanation of symbols]

 10 Cable Temporary Holding Tool 12 Existing Cable 14 Cable Supporting Plate 16 Receiving Claw 18 Spacing Holding Tool 20 Large Diameter Pipe 22 Small Diameter Pipe 24, 26 Pin Hole 27 Inserting Protrusion 28 Connecting Pin 29 Pin 30 Hanging Hardware 32 Lower Bolt 34 Hook Bolt 36 Turn Buckle 38 Rope 39 Pin 40 Support leg 42 Leg outer cylinder 44 Leg inner cylinder 46, 48 Pin hole 50 Connecting pin 52 Bifurcated bracket 54 Connecting bolt 56 Flange 58 Manhole 60 Basic concrete 62 Protective plate 64 Side wall slab 66 Beam material 68 Veneer plate 70 Manhole side wall

Claims (1)

[Scope of utility model registration request] 1. A cable temporary holding tool for holding an existing cable when a manhole is modified, etc., comprising a pair of support plates having cable receiving claws, and a space holding tool capable of adjusting the spacing between the support plates. A temporary cable retainer characterized by being connected to each other, a hanging metal member being provided on an upper portion of the supporting plate, and a height-adjustable supporting leg being provided on a lower portion thereof.