KR102693315B1 - Safety apparatus for preventing steel tower fall - Google Patents

Abstract

The present invention relates to a safety device for preventing falls of a steel tower, which is easy to maintain for a wire fastened to the steel tower for preventing falls, and comprises: an upper clamp and a lower clamp each installed on a steel plate at the upper and lower portions of the steel tower, an intermediate clamp installed between the upper clamp and the lower clamp and having a wire catch, and a wire having both ends connected to the upper clamp and the lower clamp via the wire catch, wherein the upper clamp comprises a sleeve member into which the upper end of the wire is inserted and fixed by compression.

Description

{SAFETY APPARATUS FOR PREVENTING STEEL TOWER FALL}

The present invention relates to a safety device for preventing a fall of a steel tower, and more specifically, to a safety device for preventing a fall of a steel tower which facilitates the maintenance of a wire attached to the steel tower for preventing a fall.

In general, a steel tower is a support structure for high-voltage power lines or communication cables, such as a transmission tower, and is a steel tower that workers climb up to perform work at heights for cable installation or other maintenance.

Steel towers are formed by connecting a number of steel angles in a truss structure, and wires are mainly connected to the upper part of the tower. These towers are usually tens of meters high from the ground, and therefore workers working on the upper part of the tower are always at risk of falling.

Therefore, a tower fall prevention device is required to ensure the safety of workers.

As an example, a tower fall prevention device may be formed by installing a fastening device for connecting a wire to a tower, and connecting the wire to the fastening device. At this time, the worker can prevent a fall accident that may occur during work by moving the safety hook attached to the body to connect it to the wire. In other words, even if the worker falls during work, he or she will not fall by getting caught on the wire, but will be suspended.

Figure 1 illustrates the configuration of a conventional safety device for preventing a tower from falling.

At this time, an upper clamp (10) is installed on the top of the steel tower (1), the upper clamp body (11) of the upper clamp (10) is fixedly mounted on the angled steel (2) of the steel tower, and a wire (40) is mounted on an upper wire connecting ring (12) connected to the clamp body (11).

A vertical intermediate clamp (20) is installed at regular intervals in the middle of the steel tower (1), the vertical intermediate clamp body (21) is fixedly mounted on the angled steel (3), and a fall prevention ring (22) is installed on the vertical intermediate clamp body (21).

A lower clamp (30) is installed at the bottom of the steel tower (1), and the lower clamp body (31) of the lower clamp (30) is fixedly mounted to the angled steel of the steel tower, and a lower wire connecting ring (32) is mounted on the lower clamp body (31).

As shown in the drawing, the wire (40) is connected at the top to the upper wire connecting ring (12) and at the bottom to the lower wire connecting ring (32), and is positioned to penetrate the fall prevention ring (22) of the vertical intermediate clamp (20).

Figure 2 is an installation photo of a vertical intermediate clamp (20), which is an element of a conventional fall prevention device for a steel tower.

Fig. 2 shows that the wire (40) is damaged when it comes into contact with the fall prevention ring (22) of the vertical intermediate clamp (20) as the wire (40) vibrates due to the wind. Since the wire (40) is tautly fixed to the top and bottom of the tower (1), it moves like a string due to the influence of the surrounding environment such as wind or vibration of the tower. Accordingly, friction occurs repeatedly between the wire (40) and the fall prevention ring (22), and there is a risk of a worker falling due to damage to the wire (40). In addition, there is also a problem that the tension of the wire (40) decreases when used for a long time, which compromises the safety of the worker.

Accordingly, when the tension of the wire (40) is reduced or damaged, maintenance work such as adjusting the tension of the wire (40) or replacing it with a new wire (40) is performed. However, in the past, there was a problem that it was difficult to separate the wire (40) for tension adjustment or replacement.

The present invention has been made to solve the problems described above, and has the purpose of providing a safety device for preventing a tower from falling, which can adjust the tension of a wire fixedly installed on the tower.

Another object of the present invention is to provide a safety device for preventing a tower from falling, which enables a wire to be easily separated from a clamp fixedly installed on the tower.

The above-described object of the present invention can be achieved by providing a safety device for preventing a steel tower from falling, characterized in that it includes: an upper clamp and a lower clamp each installed on a steel plate at the upper and lower portions of a steel tower; an intermediate clamp installed between the upper clamp and the lower clamp and having a wire catch; and a wire having both ends connected to the upper clamp and the lower clamp via the wire catch, wherein the upper clamp includes a sleeve member into which the upper end of the wire is inserted and fixed by compression.

According to one feature of the present invention, the upper clamp may include a clamp member coupled to a steel plate on the upper part of the steel tower, and an upper bracket coupled to one side of the clamp member and elastically supporting the sleeve member.

According to another feature of the present invention, a wire extending downward from the upper clamp can be extended upward again through the lower clamp by a predetermined length and then wound into a ring shape to form a spare part.

According to another feature of the present invention, the lower clamp includes a lower bracket coupled to a steel plate at the bottom of the steel tower, and a wire fixing ring elastically supported on one side of the lower bracket, and the lower end of the wire can be fastened by passing through the ring hole of the wire fixing ring.

According to another feature of the present invention, the lower clamp includes a lower bracket coupled to a steel plate at the bottom of the steel tower, a wire fixing ring elastically supported on one side of the lower bracket, and a tension adjusting member having one end coupled to a ring hole of the wire fixing ring and having a plurality of fixing holes formed therethrough in the longitudinal direction, wherein the tension of the wire can be adjusted by coupling the lower end of the wire to one of the plurality of fixing holes.

According to the safety device for preventing a tower from falling according to the present invention, since the upper end of the wire is pressed and fixed to the sleeve member, the wire can be easily separated from the sleeve member when necessary.

In addition, according to the safety device for preventing a tower from falling according to the present invention, the lower part of the wire can be raised and lowered along the tension adjusting member and thus the tension of the wire can be easily adjusted.

In addition, according to the safety device for preventing a tower from falling according to the present invention, since a spare part is formed with a surplus of wire length, after cutting the damaged wire section, the spare part can be released and used by the amount of the cut length.

In addition, according to the safety device for preventing a tower from falling according to the present invention, since the upper and lower ends of the wire are elastically supported by the upper clamp and the lower clamp, damage to the wire or a decrease in tension can be minimized.

Figure 1 is a configuration diagram of a conventional safety device for preventing a tower from falling.
Figure 2 is a photo of a conventional vertical intermediate clamp and wire.
Figure 3 is a side view of a safety device for preventing a tower from falling according to the first embodiment of the present invention.
Figure 4 is an enlarged side view of an upper clamp according to the first embodiment of the present invention.
Figure 5 is an enlarged side view of a lower clamp according to the first embodiment of the present invention.
Figure 6 is an enlarged front view of the lower clamp according to the first embodiment of the present invention.
Figure 7 is a side view of a safety device for preventing a tower from falling according to a second embodiment of the present invention.
Figure 8 is an enlarged side view of a lower clamp according to a second embodiment of the present invention.
Figure 9 is an enlarged front view of a lower clamp according to a second embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. However, the embodiments described below are merely described in detail to an extent that a person having ordinary knowledge in the technical field to which the present invention belongs can easily carry out the invention, and this does not mean that the protection scope of the present invention is limited due to this. In addition, in describing various embodiments of the present invention, the same drawing reference numerals will be used for components having the same technical features.

1st Example

FIG. 3 is a side view of a safety device for preventing a tower from falling according to the first embodiment of the present invention.

As illustrated in FIG. 3, a safety device (100) for preventing a tower from falling according to the first embodiment of the present invention includes an upper clamp (200) installed on the upper portion of a tower (1), a lower clamp (300) installed on the lower portion of the tower (1), an intermediate clamp (400) installed between the upper clamp (200) and the lower clamp (300), and a wire (500) connected from the upper clamp (200) to the lower clamp (300) via the intermediate clamp (400).

The upper clamp (200) is fixedly installed on the angled steel (2) at the top of the steel tower (1), and the lower clamp (300) is fixedly installed on the angled steel (3) at the bottom of the steel tower (1). In addition, the middle clamp (400) is fixedly installed between the upper clamp (200) and the lower clamp (300), for example, on the angled steel (4) at the middle of the steel tower (1), and a wire catch (410) bent in an arc shape on one side is formed so that a wire (500) can pass through it.

The wire (500) is connected at the top to the top clamp (200) and extends downward through the wire fitting (410) of the middle clamp (400). The lower end of the wire (500) is connected to the lower clamp (300), and can be fastened by passing through the ring hole (322) of the wire fixing ring (320), as shown in the drawing.

FIG. 4 is an enlarged side view of an upper clamp according to the first embodiment of the present invention, in which the upper end of a wire (500) is elastically supported by the upper clamp (200).

Here, the upper clamp (200) includes a clamp member (210) that is coupled to the angled steel (2) on the upper part of the steel tower (1), an upper bracket (220) that has one end coupled to one side of the clamp member (210), a sleeve member (230) that is vertically coupled by penetrating the other end of the upper bracket (220), and a first spring (240) that is interposed between the upper bracket (220) and the sleeve member (230) to elastically support the sleeve member (230).

At this time, the clamp member (210) includes a pair of clamps (211) that are symmetrically connected to both ends in the width direction of the angle steel (2) bent in the shape of the letter 'ㄱ', and a long bolt (212) that penetrates the pair of clamps (211) and is connected at an angle as shown in the drawing.

The upper bracket (220) is a plate shape bent at a predetermined angle, one end of the upper bracket (220) is connected to one end of a long bolt (212) protruding outside the clamp (211), and the other end of the upper bracket (220) extends in a horizontal direction.

A sleeve member (230) is coupled to vertically penetrate the other end of the upper bracket (220). The sleeve member (230) includes a main body (231) penetrating the other end of the upper bracket (220), a catch member (232) whose width is formed to expand at the lower end of the main body (231), and a compression fixing member (234) that extends downward from the lower end of the catch member (232) and has an insertion groove (233) formed inside, and the upper end of the wire (500) is inserted into the insertion groove (233) of the compression fixing member (234) and compressed and fixed. Accordingly, a plurality of compression grooves (234a) that are concavely formed by compression can be formed on the outer surface of the compression fixing member (234) at a predetermined interval from each other in the height direction.

According to an embodiment of the present invention, since the wire (500) is inserted into the insertion groove (233) of the sleeve member (230) and pressed and fixed in this way, there is an advantage in that it is easy to separate and replace the wire (500) from the sleeve member (230) when necessary, or to cut off a damaged portion of the wire (500) and then reattach the remaining portion to the sleeve member (230).

Meanwhile, a first spring (240) in the form of a coil spring is installed on the upper side of the upper bracket (220) to elastically support the sleeve member (230). At this time, the lower end of the first spring (240) is supported on the upper side of the upper bracket (220), and the upper end is supported by a stopper member (250) such as a nut that is screw-connected to the main body (231) of the sleeve member (230).

Referring again to FIG. 3, the wire (500) whose upper end is pressed and fixed into the insertion groove (233) of the sleeve member (230) extends downward through the wire catch (410) of the intermediate clamp (400). As an example, the intermediate clamp (400) may be formed in the shape of a bar with one end joined to the angled steel (4) of the steel tower (1) and the other end extended to the outside of the steel tower (1), and the other end of the intermediate clamp (400) may be bent into a ring shape to form the wire catch (410).

FIG. 5 is an enlarged side view of a lower clamp according to a first embodiment of the present invention, and FIG. 6 is an enlarged front view of a lower clamp according to a first embodiment of the present invention.

The lower end of the wire (500) that extends downward past the wire catch (410) is extended upward again by a predetermined length through the lower clamp (300) and then tied.

Here, the lower clamp (300) includes a lower bracket (310) that is connected to the angled steel (3) at the bottom of the steel tower (1), and a wire fixing ring (320) that is elastically supported on one side of the lower bracket (310), and the lower end of the wire (500) extends upward through the ring hole (322) at the top of the wire fixing ring (320), and is then secured by at least one wire clip (600).

At this time, the lower bracket (310) may be formed by including a plate-shaped body (311) bent in an ‘L’ shape and a pair of reinforcing frames (312) that are joined at an angle to both sides of the body (311) to reinforce strength.

The body (311) of the lower bracket (310) includes a vertical portion (311a) that is joined to the angle steel (3) and a horizontal portion (311b) that is formed by being bent in a horizontal direction at the lower end of the vertical portion (311a), and a wire fixing ring (320) is vertically joined by penetrating the body (311) of the lower bracket (310).

The wire fixing ring (320) includes an insertion portion (321) that penetrates the horizontal portion (311b) of the lower bracket (310), and a ring hole portion (322) formed in a circular ring shape at the upper end of the insertion portion (321). The lower end of the wire (500) penetrates the ring hole portion (322) and extends upward, and is then fastened by the wire clip (600). At this time, the lower end of the wire (500) that has been extended downward is bent and then extends upward again to form a ring portion (510), and this ring portion (510) can extend upward by surrounding a horseshoe-shaped insulating portion (700) that is coupled to the ring hole portion (322).

Meanwhile, a second spring (330) in the form of a coil spring is installed on the lower side of the lower bracket (310) to elastically support the wire fixing ring (320). The upper end of the second spring (330) is supported on the lower side of the lower bracket (310), and the lower end is supported by a stopper member (340) such as a nut that is screw-connected to the insertion portion (321) of the wire fixing ring (320).

According to an embodiment of the present invention, as described above, the lower end of the wire (500) is elastically supported by the lower bracket (310) on which the second spring (330) is installed, and the upper end of the wire (500) is elastically supported by the upper bracket (220) on which the first spring (240) is installed. Accordingly, even if an external force is applied to the wire (500), the impact is absorbed by the elastic force of the first and second springs (240, 330), thereby improving the durability of the wire (500).

In addition, the lower end of the wire (500) extends upwardly by a predetermined length through the ring hole (322) of the wire fixing ring (320), and the wire (500) of the predetermined length extended upwardly in this manner is wound into a ring shape and then tied by a tie member (800) to form a spare part (520). That is, the length of the wire (500) connected from the upper clamp (200) to the lower clamp (300) is wound into a ring shape to form a coiled spare part (520).

In this case, when the wire (500) is damaged, the damaged portion can be cut off, and the spare wire (520) can be released by the cut length and reconnected. Accordingly, by reusing the spare portion of the existing wire (500) instead of replacing it with a completely new wire (500), the time and cost required for maintenance and repair of the safety device (100) can be reduced.

2nd Example

FIG. 7 is a side view of a safety device for preventing a tower from falling according to a second embodiment of the present invention, FIG. 8 is an enlarged side view of a lower clamp according to a second embodiment of the present invention, and FIG. 9 is an enlarged front view of a lower clamp according to a second embodiment of the present invention.

The safety device (100a) according to the second embodiment of the present invention is similar in overall configuration to the first embodiment described above, but differs in that the lower clamp (300a) is provided with a tension adjusting member (350) for adjusting the tension of the wire (500). Therefore, the same components that perform the same function as the first embodiment described above are given the same drawing reference numerals and duplicate descriptions are omitted, and the safety device (100a) according to the second embodiment of the present invention will be described below, focusing on the differences from the first embodiment described above.

Referring to FIGS. 8 and 9, in a safety device (100a) according to the second embodiment of the present invention, the lower end of a tension adjusting member (350) is coupled to a ring hole (322) of a wire fixing ring (320), and the lower end of a wire (500) is coupled to an upper end of the tension adjusting member (350).

At this time, the tension adjusting member (350) may include a pair of plate members (351) and a plurality of fastening holes (352) that are formed penetratingly and spaced apart from each other at a predetermined interval along the longitudinal direction of the plate member (351). In the case of the embodiment illustrated in the drawing, four lower fastening holes (352) are formed penetratingly in the lower portion of the plate member (351), four upper fastening holes (352) are formed penetratingly in the upper portion, and an example is illustrated in which a group of lower fastening holes (352) and a group of upper fastening holes (352) are formed penetratingly and spaced apart from each other at a predetermined interval. However, this is only one embodiment of the present invention, and the arrangement of the lower fastening holes (352) and the upper fastening holes (352), and the specifications such as the number and diameter of the fastening holes (352) may be appropriately selected as needed.

As an example, a pair of plate members (351) may be arranged so that the lower ends are respectively attached to the two sides of the hook hole (322) of the wire fixing ring (320) and face each other, and are joined by a lower fastening member (353) such as a bolt that penetrates the lower fastening hole (352) and the hook hole (322) of the wire fixing ring (320). That is, the wire fixing ring (320) and the tension adjusting member (350) are joined by the lower fastening member (353) that penetrates the lower fastening hole (352) and the hook hole (322).

At this time, the upper ends of a pair of plate members (351) are respectively added to both sides of the ring portion (510) of the wire (500) to face each other, and are joined by an upper fastening member (354) such as a bolt that penetrates the upper fastening hole (352) and the ring portion (510) of the wire (500). That is, the wire (500) and the tension adjusting member (350) are joined by the upper fastening member (354) that penetrates the upper fastening hole (352) and the ring portion (510).

Accordingly, when tension adjustment of the wire (500) is required, the tension of the wire (500) can be adjusted by moving the fastening position of the ring portion (510) of the wire (500) or the ring hole portion (322) of the wire fixing ring (320) along the fastening hole (352) of the tension adjustment member (350).

For example, in order to re-tighten a loosened wire, the ring portion (510) of the wire (500) may be pulled downwards to be fastened to a fastening hole (352) located lower than the original fastening hole (352), or the tension adjusting member (350) may be lowered so that the ring hole portion (322) of the wire fixing ring (320) is fastened to a fastening hole (352) located higher than the original fastening hole (352).

Meanwhile, in the case of the safety device (100a) according to the second embodiment of the present invention, as in the case of the first embodiment described above, the wire (500) is elastically supported by the first and second springs (240, 330) of the upper clamp (200) and the lower clamp (300a), so that the durability of the wire (500) is improved.

In addition, by forming a ring-shaped spare part (520) with the length of the lower part of the wire (500), it is possible to reduce the time and cost required for maintenance and repair of the wire (500).

Although the embodiments of the present invention have been described above, it is understood that those skilled in the art will be able to make various modifications and implementations without departing from the scope of the claims of the present invention.

100, 100a: Safety device for preventing tower falls
200: Top clamp 210: Clamp member
220: Top bracket 230: Sleeve member
233: Insertion groove 234: Compression fixing part
240: 1st spring 300, 300a: Lower clamp
310: Bottom bracket 320: Wire fixing ring
321: Insertion part 322: Ring hole part
330: Second spring 350: Tension adjustment member
351: Plate member 352: Fastening hole
400: Middle clamp 410: Wire clip
500 : Wire 510 : Ring
520 : Spare 600 : Wire Clip
700 : Insulation 800 : Binding hole

Claims (5)

Top clamp and bottom clamp installed on the upper and lower angle steel of the tower respectively;
An intermediate clamp installed between the upper clamp and the lower clamp and equipped with a wire catch;
Including a wire whose two ends are connected to the upper clamp and the lower clamp respectively through the above wire fitting,
The upper clamp includes a sleeve member into which the upper end of the wire is inserted and compressed and fixed,
The above lower clamp comprises a lower bracket that is connected to the angled steel at the bottom of the steel tower, a wire fixing ring that is elastically supported on one side of the lower bracket, and a tension adjusting member that has one end connected to the ring hole of the wire fixing ring and has a plurality of fastening holes formed through it in the longitudinal direction.
The tension of the wire can be adjusted by connecting the lower end of the wire to one of the plurality of fastening holes.
The above sleeve member,
A main body portion penetrating the other end of the upper bracket;
A catch formed at the bottom of the main body with an expanded width; and
It includes a compression fixing part that extends downward from the bottom of the hanging part and has an insertion groove formed inside.
On the outer surface of the compression fixing member, a number of compression grooves are formed concavely by compression and are spaced apart from each other at a predetermined interval along the height direction.
The above tension adjusting member is,
A pair of plate members;
A plurality of fastening holes formed penetratingly and spaced apart from each other at a predetermined interval along the length direction of the plate member;
A lower fastening member that is fastened by penetrating the lower fastening hole and the ring hole of the wire fixing ring; and
Includes an upper fastening member that is fastened by penetrating the upper fastening hole and the ring portion of the wire,
A pair of plate members are arranged so that the upper part is added to each side of the wire loop portion and faces each other, and the lower part is added to each side of the wire fixing ring loop portion and faces each other.
The wire fixing ring and tension adjusting member are connected by a lower fastening member that penetrates the lower fastening hole and ring hole.
A safety device for preventing a steel tower from falling, characterized in that the connection between the wire and the tension adjusting member is formed by an upper fastening member that penetrates the upper fastening hole and the ring part. In claim 1,
A safety device for preventing a tower from falling, characterized in that the upper clamp includes a clamp member that is joined to the angled steel on the upper part of the tower, and an upper bracket that is joined to one side of the clamp member and elastically supports the sleeve member. In claim 1,
A safety device for preventing a steel tower from falling, characterized in that a wire extended downward from the upper clamp is extended upward again through the lower clamp by a predetermined length and then wound into a ring shape to form a spare part. In claim 1,
The above lower clamp includes a lower bracket that is connected to the angled steel at the bottom of the tower, and a wire fixing ring that is elastically supported on one side of the lower bracket.
A safety device for preventing a tower from falling, characterized in that the lower part of the wire is secured by passing through the ring hole of the wire fixing ring. delete

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