JP2002078165A - Cable locking apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cable locking apparatus to allow automatically holding the cable without damage in the location when the pulling up of the cable is suspended. SOLUTION: The cable locking apparatus provides: two plate materials disposed opposite to each other and fixed to edges of an opening for pulling up the cable wound onto a cable drum; two supporting plates traversing between the plate materials in parallel and fixed to the supporting plates; and a pair of locking members disposed opposite to each other and between the supporting plates in series and turnably axially supported by the supporting plates. A pair of locking members are turned in the direction of pulling up the cable according to movement of the cable when the cable is pulled up, and accepts movement of the cable. A pair of the locking members are turned in the opposite direction of pulling up the cable according to movement of the cable when the cable moves in the opposite direction of pulling up the cable. Locking parts comprise recesses with U shape cross section blocking movement of the cable, and are formed on opposite faces. Rubber plates are disposed on the recesses.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable locking device used for laying a trunk cable in a building.

[0002]

2. Description of the Related Art Conventionally, construction work for laying a trunk cable in a building has been performed as shown in FIG. First, the cable drum 100 is carried into the second basement floor of the building, and for example, the electric winch 101 for lifting is placed on the fourth floor and the eleventh floor.
102 is installed.

Next, the electric winch 101 on the fourth floor is operated to lower the wire 103 to the second basement floor. A cable grip 104 is attached to the wire 103 that has descended to the second basement floor, and a cable 110 is attached to the cable grip 104.
Attach. Next, the electric winch 101 on the fourth floor is operated to pull up the cable 110, and the cable 110 raised on the cable rack or the like on the third floor is bound. Thereafter, the cable grip 104 is removed from the cable 110. Thereafter, the electric winch 101 on the fourth floor is operated to lower the wire 103 to the second basement floor, and the cable 110 is attached to the cable grip 104.

Next, the wire 105 of the electric winch 102 on the eleventh floor is lowered, and the cable grip 106 attached to the wire 105 is attached to the cable 110 tied to a cable rack or the like. Next, the electric winches 101 and 102 on the fourth and eleventh floors are operated to raise the cable 110 to the eleventh floor. The cable 110 pulled up to a cable rack or the like is bound on the eleventh floor. Then, electric winches 101 on the 4th and 11th floors,
The wires 103 and 105 of 102 are switched downward, and the necessary length cable 110 is further pulled up.

[0005] By repeating the above operation, the trunk cable is pulled up.

[0006]

The main cable is, for example, an outer diameter of 11 to 62 mm in the case of a 600 V three-core cable.
φ, since the weight per unit is 2 to 11 kg / m,
It is difficult to raise to a predetermined floor with one electric winch.

Therefore, it is necessary to replace the cable grips 104 and 106 during the lifting.
In the replacement work of the cable grips 104 and 106, the conventional cable pulling method requires an operation of temporarily binding the cable grip to a cable rack or the like.
Complicated and troublesome work was required.

SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional problem, and an object thereof is to automatically hold a cable without damaging the cable at the position when the cable is pulled up. It is an object of the present invention to provide a cable locking device.

[0009]

The invention according to claim 1 is
Two plate members arranged opposite to each other on the edge of the opening for pulling up the cable wound on the cable drum and fixed on the edge of the opening; Two support plates that are passed and fixed to the two plate members, are arranged in series between the two support plates, face each other, and are rotatably supported by the two support plates. A pair of locking members, wherein the pair of locking members rotate in the pulling direction along with the pulling of the cable when pulling up the cable to allow movement of the cable, and when the cable moves in the anti-pulling direction. Locking portions consisting of concave portions having a U-shaped cross section that rotate in the anti-pulling direction along with the movement and prevent the cable from moving are formed on mutually facing surfaces, and a rubber plate is disposed in the concave portions. It is characterized by having been done.

According to a second aspect of the present invention, in the cable locking device according to the first aspect, the pair of locking members are connected by a spring. According to a third aspect of the present invention, in the cable locking device according to the first aspect, the pair of locking members include two substantially fan-shaped plate members arranged in parallel, and a large arc side of the two plate members. And a concave portion having a U-shaped cross section formed between the end surfaces along the end surface.

According to a fourth aspect of the present invention, in the cable locking device according to the first aspect, when the cable is not inserted, the two locking portions abut each other when the cable is not inserted. It is characterized in that it is configured not to descend to the side. According to a fifth aspect of the present invention, in the cable locking device of the first aspect, the pair of locking members are provided with a counterweight.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described based on embodiments shown in the drawings. 1 and 2 show a cable locking device according to an embodiment of the present invention (corresponding to claims 1 to 4). The cable locking device 1 according to the present embodiment includes two plate members 10, 10 made of angle members arranged in parallel at a predetermined interval, and these two plate members 10, 1.
Two support plates 20 and 20 made of an angle material which are fixed to the two plate members 10 and 10 which are passed in parallel between 0, and are opposed in series between the two support plates 20 and 20. The bolts and nuts 3 are placed on the two support plates 20 and 20 and
9, a pair of locking members 30 rotatably supported via
30.

The two plate members 10, 10 are two support plates 2
A hole 11 for fixing 0, 20 with a bolt nut 15 is provided. In this example, five holes 1 are provided so that two places for fixing the two support plates 20 can be formed.
1 is provided. Also, the two plate materials 10, 10
As will be described later, the opening 5 of the building 50 used when pulling up the cable 41 wound around the cable drum 40.
The intervals are set so as to face each other on one edge 52. Further, on the edge portion 52 of the opening 51, it is fixed by a bolt nut or the like.

The two support plates 20, 20 are two plate members 1
Holes 22 are provided on the bottom surface 21 for fixing the bolts 0 and 10 to the bolts and nuts 15. In addition, two support plates 20,
20 has a side surface 23 provided with a hole 24 for rotatably supporting the pair of locking members 30, 30. The pair of locking members 30, 30 are composed of two substantially plate-shaped plate members 31, 31 disposed in parallel, and the two plate members 31, 31.
Are formed along the end surface 32 between the large arc side end surfaces 32, 32 and have concave portions 33, 33 having a U-shaped cross section. Here, the concave portion 33 forms a locking portion.

The reason why the recesses 33, 33 are formed to have an arcuate U-shaped cross section formed along the end face 32 between the large arc side end faces 32, 32 is that the cable 41
This is because when the cable 41 is pinched, the cable 41 can be uniformly pressed from a direction perpendicular to the central axis of the cable 41 so as to wrap the outer periphery of the cable 41. In addition, a rubber plate 34 is arranged in the recess 33 so as not to damage the cable 41 when the cable 41 is pinched.

The two plate members 31, 31 are provided with holes 35, 35 which are rotatably supported between the two support plates 20, 20 via bolt nuts 39. The distance between the pair of locking members 30, 30 is a distance at which the concave portions 33 of the two abut when the cable 41 is not sandwiched between the two, and does not rotate downward from between the two support plates 20, 20. .

The pair of locking members 30, 30 are elastically connected on one side by a spring 38. This spring 38 allows the cable 41 to move in the pulling-up direction when the cable 41 is pulled up, and allows the cable 41 to move in the pulling-up direction. Rotation in the direction assists the movement of the cable 41.

Next, the operation of the cable locking device 1 according to this embodiment will be described. An example in which a trunk cable is laid in a building will be described with reference to FIG. For example, electric winches 60 and 61 are installed on the 4th and 11th floors. The cable drum 40 is installed in front of the existing cable rack 70 on the second basement floor. 3
The cable locking device 1 according to the present embodiment is fixed to the tenth floor and the tenth floor.

The electric winch 60 on the fourth floor is operated to connect the wire 43 to the pair of locking members 3 of the cable locking device 1 on the third floor.
Lower between 0 and 30 to the second basement floor. After fixing the cable 41 with the known cable grip 42 on the second basement floor, the electric winch 60 is operated to pull up the cable 41. When the cable gripper 42 comes to the position just before the cable locking device 1 on the third floor, the electric winch 60 is disconnected. Stop. Thereby, the pair of locking members 30 of the cable locking device 1,
30 is rotated by its own weight so that the locking portions 33, 33 of the two come close to each other, and wraps the outer periphery of the cable 41 so that the locking portions 33, 33 damage the cable 41 via the rubber plates 34, 34. And fix the cable 41 at that position.

Thereafter, the cable gripper 42 is removed from the cable 41, and the electric winch 61 on the eleventh floor is operated to move the wire 44 between the pair of locking members 30, 30 of the cable locking device 1 on the tenth floor to the third floor. Let go down. Then, the cable gripper 45 is attached to the cable 41 locked by the cable locking device 1. At the same time, the electric winch 60 on the fourth floor is operated to lower the wire 43 to the second basement floor, and the gripper is attached to the cable 41.

Thereafter, the electric winch 60 on the fourth floor and the electric winch 61 on the eleventh floor are operated to raise the cable 41 to the eleventh floor. Here, the electric winches 60 and 61 are stopped. Thereby, the pair of locking members 30, 30 of each cable locking device 1 are rotated by their own weights so as to bring the locking portions 33, 33 of the two close to each other, and lock so as to wrap the outer periphery of the cable 41. The cable 41 is sandwiched between the portions 33, 33 via the rubber plates 34, 34 without damaging the cable 41.
Is fixed at that position.

After the end of the cable 41 arrives at the eleventh floor, the electric winch 60 on the fourth floor and the electric winch 6 on the eleventh floor.
The first wires 43 and 44 are respectively attached downward, and are further pulled up to the required length. Then, the pulled-up cable 41 is separated from the cable locking device 1 and fixed to the existing cable rack 70, for example, as shown in FIG. In this case, the cable 41 is separated from the cable locking device 1 by lifting the pair of locking members 30 and 30 so that the cable 41 cannot be locked, and then pulling the cable 41 in the direction opposite to the spring 38. be able to.

By repeating this operation, a predetermined number of cables 41 can be pulled up. Further, for example, when two cable racks 70 are arranged, by moving the two support plates 20, 20 as indicated by temporary wires, the cable locking device 1 is moved to the opposite side of the opening 51. Can be translated, and the same operation can be performed hereinafter.

As described above, when the cable locking device 1 according to the present embodiment is used, two electric winches 60 and 61 are used.
Can be easily switched. As the trunk cable, for example, a 600 V three-core CV (CE) cable, a 600 V two-core CV (CE) cable, a 6,600 V
Single-core CV (CE) cable, 6,600V 3-core CV (C
E) There are cables, etc., with an outer diameter of 7.3 to 21.7 mm,
The approximate mass is about 1.4 to 11.1 kg / m.

Therefore, depending on the purpose, the cable locking device 1
When the distance between the pair of locking members 30, 30 is increased, it is also possible to use a plurality of holes 21 provided on the side surfaces of the two support plates 20, 20, and to change the positions of the bolts and nuts. Alternatively, a pair of locking members 30, 30 of different sizes
May be prepared.

In the above-described embodiment, the case where the pair of locking members 30, 30 are elastically connected by the spring 38 has been described. Instead, a counter weight is attached to the pair of locking members 30, 30. It may be provided (claim 5). Of course, the spring 38 and the counterweight can be used together. In the above embodiment,
Although the pair of locking members 30 are configured to cooperate with each other, only one of them may be rotated.

[0027]

According to the present invention, the pair of locking members permit the movement of the cable when the cable is pulled up, and the pair of locking members engage the cable as the cable moves in the direction of gravity when the cable is suspended. It moves in the direction to stop and automatically holds the cable at that position, such as replacing the cable grip when pulling up the cable, tying the cable to the adjacent structure as in the past when switching with an electric winch, etc. No need for complicated work.

Further, since the locking portion is provided with the rubber plate, the cable is not damaged when the cable is locked.
Further, when the cable is not inserted, the pair of locking members abut the locking portions of both, so that the locking member does not drop down inadvertently, and the locking member is brought into a predetermined position when the cable is inserted. The troublesome work of moving is eliminated.

[Brief description of the drawings]

FIG. 1 is a side view of a cable locking device according to an embodiment of the present invention.

FIG. 2 is a plan view of the cable locking device according to the embodiment of the present invention.

FIG. 3 is an explanatory diagram showing an application example of the cable locking device according to the embodiment of the present invention.

FIG. 4 is an explanatory diagram showing an application example of the cable locking device according to the embodiment of the present invention.

FIG. 5 is an explanatory view showing a conventional cable lifting work.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 cable locking device 10 plate material 11, 22, 24 hole 15, 39 bolt nut 20 support plate 30 locking member 31 plate material 32 end face 33 concave portion (locking portion) 34 rubber plate 40 cable drum 41 cable 50 building 51 opening 52 Rim

Claims (5)

[Claims] 1. Two plate members which are arranged opposite to an edge of an opening for pulling up a cable wound on a cable drum and are fixed on the edge of the opening, and Two support plates which are passed in parallel between the plate materials and are fixed to the two plate materials, and which are arranged in series between the two support plates so as to face each other and are rotatable by the two support plates And a pair of locking members that are pivotally supported by the cable. The pair of locking members rotate in the pulling-up direction as the cable is pulled up when the cable is pulled up, permitting the movement of the cable, and allowing the cable to be pulled up. In the movement in the direction, the locking portion formed of a concave portion having a U-shaped cross section that rotates in the anti-pulling direction along with the movement and prevents the movement of the cable is formed on the mutually facing surfaces, and in the concave portion. Is a case where a rubber plate is arranged. Bull locking device. 2. The cable locking device according to claim 1, wherein the pair of locking members are connected by a spring. 3. The cable locking device according to claim 1, wherein the pair of locking members are substantially fan-shaped and arranged in parallel.
A cable locking device comprising: a plurality of plate members; and a concave portion having a U-shaped cross section formed between the large-arc-side end surfaces of the two plate members along the end surfaces. 4. The cable locking device according to claim 1, wherein the pair of locking members are such that when the cable is not inserted, the two locking portions abut and do not descend to the bottoms of the two support plates. A cable locking device characterized by being constituted. 5. The cable locking device according to claim 1, wherein a counter weight is provided on the pair of locking members.