KR20210004094A - Rope holding apparatus for preventing fall of high place worker and fall prevention method using the same - Google Patents

Abstract

The present invention is to provide a rope holding apparatus for preventing fall of high-place workers and a method for preventing fall of high-place workers using the same, which can ensure the safety of all high-place workers performing high-place work. The present invention relates to a rope holding apparatus comprising: a footrest bolt fitting part fitted to a footrest bolt of a structure; a spiral buffer member which has a shape extending upward in a spiral, is connected to the footrest bolt fitting part, and through which a rope connected to a high-place worker passes through a central space; and a fixing member fastened to the footrest bolt fitting part and pressure-welded to the footrest bolt.

Description

ROPE HOLDING APPARATUS FOR PREVENTING FALL OF HIGH PLACE WORKER AND FALL PREVENTION METHOD USING THE SAME}

The present invention relates to a rope holding device for preventing fall of a high place worker and a method of preventing fall of a high place worker using the same, and more particularly, a rope holding device for preventing fall of a high place worker and a method of preventing fall of high place workers using the same It is about.

In general, a steel tower is a tower made of steel, and may include a transmission tower supporting a transmission line supplying high-voltage power, a communication tower supporting a communication line transmitting data signals, and the like. These pylons are largely formed on the ground, a plurality of strut frames forming a tower structure that is erected on the top of the base, a plurality of connecting frames that are installed horizontally or inclinedly connected to the strut frames, and installed to face outward on one side of the main frame It is composed of a plurality of arm frames.

On the other hand, maintenance work in which workers inspect and replace electrical and electronic components related to transmission or communication, including structures that support transmission lines or communication lines at heights of the pylon so that they can stably support the transmission lines or communication lines of the pylon. Is carried out periodically. Most of the pylons are installed on the hillside or on the top of the mountain, so it is impossible to access the elevated ladder vehicle, so the operator has to go up to the height of the pylon directly during maintenance work.

Conventionally, when the first aerial worker installs a lifeline on a structure such as a power transmission tower, the aerialists have been working in a state of securing safety by using the already installed lifeline. However, the first workers at heights board the structure without a separate safety device or lifeline, and likewise, the last workers at heights who come down after dismantling the lifeline are exposed to the risk of fall, and fall accidents are frequently occurring. Therefore, there is a need to improve this.

The background technology of the present invention is disclosed in Korean Patent Registration No. 1960059 (registered on March 13, 2019, title of invention: safety device for preventing fall of a steel tower).

The present invention provides a rope holding device for preventing fall of high place workers that can ensure the safety of all high place workers who perform high place work, including the first person who climbs to install a lifeline on a structure, and a fall prevention method for high place workers using the same. There is a purpose.

A rope holding device for preventing fall of a high place worker according to the present invention comprises: a footrest bolt fitting portion fitted to a footrest bolt of a structure; A spiral buffer member having a shape extending upward in a spiral shape, connected to the footrest bolt fitting portion, and passing a rope connected to the aerial worker through a central space portion; And a fixing member fastened to the footrest bolt fitting part and press-contacted to the footrest bolt.

The footrest bolt fitting portion, a bolt cap portion covering an end of the footrest bolt; And a bolt insertion groove formed at one end to be opened inside the bolt cap part and into which the end of the footrest bolt is inserted.

The bolt cap portion, the cap body portion; A buffer coupling portion formed on one side of the cap body portion and to which an end portion of the spiral buffer member is coupled; And a fixing coupling part formed at the other side of the cap body part to communicate with the bolt insertion groove part, and through which the fixing member is fastened.

The bolt insertion groove portion is formed to extend in one direction inside the bolt cap portion, the first end insertion portion having a first width; And a second end insertion portion formed in communication with an end portion of the first stage insertion portion and having a second width smaller than the first width.

The fixed coupling portion includes: a first fixing hole formed at a set distance from an inner end portion of the first end insertion portion; And a second fixing hole formed at a set distance from the inner end of the second stage insertion part and disposed to be spaced apart from the first fixing hole in a circumferential direction.

The bolt insertion groove is characterized in that it has a polygonal cross-sectional shape corresponding to the cross-sectional shape of the footrest bolt.

The spiral buffer member, the cap coupling portion coupled to the footrest bolt fitting portion; And it is connected to the cap coupling portion, it is bent in a spiral from the outside of the footrest bolt fitting portion, extending upward, and having an extended length that is wound at least one turn; characterized in that it comprises a.

The cap coupling portion may include a cap fixing portion fitted and fixed to a buffer coupling portion formed on the footrest bolt fitting portion; And a lateral extension part connected to the cap fixing part, extending in a lateral direction, and protruding to the outside of the footrest bolt fitting part.

The separation prevention buffer unit is connected to the fixed coupling portion, the proximity arrangement bent portion bent toward the structure; A basic spiral portion connected to the proximity arrangement bent portion, wound one round in a spiral shape and extending upward; A separation preventing spiral portion formed to extend in a spiral shape above the basic spiral portion and forming the space portion open in a vertical direction together with the basic spiral portion; And a rope inlet portion formed to be hollow with a width through which the rope can pass between the basic spiral portion and the departure preventing spiral portion, and communicated with the space portion.

The fixing member may include a pressure welding bolt portion which is fastened through the footrest bolt fitting portion, and whose one end is press-contacted with the footrest bolt; And a gripping portion formed in a shape capable of gripping the other end of the pressure welding bolt portion positioned outside the footrest bolt fitting portion.

The method of preventing the fall of an aerial worker according to the present invention comprises: an automatic rope stopping device installation step of fixing an automatic rope stopping device for restraining the movement of the rope when the rope moves above a set speed; An upward movement start step of connecting the rope bound to the automatic rope stopping device and moving toward the upper part of the structure; During upward movement, a rope holding device installation step of fixing a rope holding device having a spring structure extending upward in a spiral shape to a footrest bolt installed in the structure; A rope binding and proceeding step of binding the rope to the rope holding device and continuing upward movement; And a rope top fixing step of fixing the rope to the upper portion of the structure when reaching the set height of the structure.

The automatic rope stopping device includes: a rotating body in which the rope is wound and rotated in association with the movement of the rope; A fixture disposed coaxially with the rotating body and having a latch engaging portion formed thereon; And a latch part rotatably coupled to the rotating body and rotated in a radial direction of the rotating body by a centrifugal force when the rotating body rotates above a set speed, and caught by the latch engaging part.

The latch portion may include a latch disposed to be spaced apart from the inside of the latch engaging portion in a radial direction; A latch pivot shaft connected to the rotating body and rotatably supporting the latch; And a latch tangent spring that elastically supports the latch to maintain an initial angle, and is elastically deformed by being pushed by a centrifugal force acting on the latch when the rotating body rotates above a set speed.

The automatic rope stopping device further comprises a fixing strap part connected to the fixing body, surrounding the circumference of the structure, and fixed at a setting position on the structure.

The rope holding device includes: a footrest bolt fitting part fitted to the footrest bolt; A spiral buffer member having a shape extending upward in a spiral shape, connected to the footrest bolt fitting portion, and passing the rope through a central space portion; And a fixing member fastened to the footrest bolt fitting part and press-contacted to the footrest bolt.

In the step of installing the rope holding device, a first end insertion portion formed at a first width on the footrest bolt fitting portion at an end of the footrest bolt, and a second end insertion portion formed with a second width smaller than the first width Selectively fitting one side of the; And fastening the fixing member to the footrest bolt fitting part.

The rope binding and proceeding step is characterized in that the rope is inserted through the spiral buffer member and is positioned to pass upward while moving in a circular path along the extending direction of the spiral buffer member.

The rope holding device for preventing the fall of an aerial worker according to the present invention and the method of preventing the fall of the aerial worker using the same are performed through a simple process of fastening the rope holding device to a scaffold bolt installed on a structure and binding the rope to the rope holding device. A safety device that can prevent a fall can be easily applied.

According to the present invention, the rope holding device can interfere with the movement of the rope connected to the high place worker and at the same time buffer the impact force acting on the high place worker when the high place worker falls, so that a fall accident due to the carelessness of the high place worker, Injury due to impact force, etc. can be prevented, and accordingly, the efficiency and quality of boarding work can be improved.

In the past, only a device for preventing the fall of an aerial worker in a state in which the lifeline is already installed has been disclosed, and a safety device for the safety of the first aerial worker who climbs a structure to install the lifeline has not been disclosed, but according to the present invention All aerial workers can safely perform work, including the first aerial worker, the aerial worker who works on the structure after the lifeline is installed, and the aerial worker who finally descends after dismantling the lifeline.

1 is an installation state diagram schematically showing a state in which an automatic rope stopping device and a rope holding device for preventing fall of an aerial worker according to an embodiment of the present invention are installed on a structure.
2 is an enlarged view of part A of FIG. 1.
3 is a perspective view schematically showing an automatic rope stopping device for preventing a fall of an aerial worker according to an embodiment of the present invention.
4 is an exploded perspective view schematically illustrating an automatic rope stopping device for preventing a fall of an aerial worker according to an embodiment of the present invention.
FIG. 5 is an exploded perspective view schematically showing an automatic rope stopping device for preventing a fall of an aerial worker according to an embodiment of the present invention from a direction different from that of FIG. 4.
6 is an exploded perspective view schematically illustrating a latch part of an automatic rope stopping device for preventing a fall of an aerial worker according to an embodiment of the present invention.
7 is an operational state diagram illustrating the operation of the latch unit when the rotating body of the automatic rope stopping device for preventing fall of an aerial worker according to an embodiment of the present invention rotates below a set speed.
8 is an operation state diagram illustrating an operation of the latch unit when the rotating body of the automatic rope stopping device for preventing fall of an aerial worker according to an embodiment of the present invention is rotated above a set speed.
9 is an enlarged view of part B of FIG. 1.
10 is a perspective view schematically showing a rope holding device for preventing fall of an aerial worker according to an embodiment of the present invention.
11 is an exploded perspective view of a main part schematically showing a rope holding device for preventing fall of a high place worker according to an embodiment of the present invention.
12 is a partial cross-sectional view schematically showing a state in which a footrest bolt is inserted into a first stage insertion portion of a rope holding device for preventing fall of a high place worker according to an embodiment of the present invention.
13 is a partial cross-sectional view schematically showing a state in which a footrest bolt is inserted into a second stage insertion portion of a rope holding device for preventing fall of an aerial worker according to an embodiment of the present invention.
14 is a flowchart illustrating a method for preventing a fall of an aerial worker according to an embodiment of the present invention.
15 is a conceptual diagram illustrating a rope binding and proceeding step of a method for preventing a fall of an aerial worker according to an embodiment of the present invention.
16 is a use state diagram illustrating a state of use for preventing a fall of a high place worker by a rope holding device for preventing a fall of a high place worker according to an embodiment of the present invention.
17 is an enlarged view of part C of FIG. 16.

Hereinafter, an embodiment of a rope holding device for preventing fall of a high place worker and a method of preventing fall of a high place worker using the same according to the present invention will be described with reference to the accompanying drawings. In this process, thicknesses of lines or sizes of components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described later are terms defined in consideration of functions in the present invention, and may vary according to the intention or custom of users or operators. Therefore, definitions of these terms should be made based on the contents throughout the present specification.

1 is an installation state diagram schematically showing a state in which an automatic rope stopping device and a rope holding device for preventing fall of an aerial worker according to an embodiment of the present invention are installed on a structure.

Referring to Figure 1, the aerial worker fall prevention method according to an embodiment of the present invention, in order to initially bind and fix the upper end of the rope 5 corresponding to the lifeline to the top of the structure 3 such as a transmission tower To prevent a fall accident of a high place worker climbing the structure 3, an automatic rope stopping device 1 for preventing a fall of a high place worker according to an embodiment of the present invention, and a rope holding device 2 for preventing a fall of a plurality of high place workers It is made including the process of binding and fixing the structure (3).

In the description of the present invention, the high place worker means an aerial worker who first climbs the structure 3 in order to bind and fix the rope 5 corresponding to the lifeline to the top of the structure 3 as described above, and the installed rope ( When it is necessary to separate from the high place worker who climbs the structure (3) along the rope (5) with the ascending machine (6) or the seat belt (7) bound to 5), the aerial worker who climbs the structure (3) first Is described as'first complaint worker'.

FIG. 2 is an enlarged view of part A of FIG. 1, and FIG. 3 is a perspective view schematically showing an automatic rope stopping device for preventing a fall of a high place worker according to an embodiment of the present invention, and FIG. 4 is It is an exploded perspective view schematically showing a main part of the automatic rope stopping device for preventing a fall of an aerial worker, and FIG. 5 is an exploded perspective view schematically showing the automatic rope stopping device for preventing a fall of a high place worker according to an embodiment of the present invention. It is a perspective view.

2, 3, and 5, the automatic rope stopping device 1 according to an embodiment of the present invention includes a rotating body 110, a fixing body 120, a latch part 130, and a fixing strap part ( 140).

The rotating body 110 is a device portion in which the rope 5 is wound, has a structure of a rotating cylinder capable of winding the rope 5 around, and is rotated in response to a moving displacement or a pull-out displacement of the rope 5. The fixture 120 is a device part fixedly installed on the structure 3, and is bound to a set position on the structure 3 by the fixing strap part 140, and coaxial with the rotating body 110 by the rotation shaft 112 Placed on top.

The latch part 130 is rotatably coupled to the rotating body 110, and when the rotating body 110 rotates above a set speed, it is rotated in the radial direction of the rotating body 110 by centrifugal force, and the latch engaging part 122 It takes on. The fixing strap part 140 has a band structure and is connected to the fixture 120, surrounds the structure 3 and is fixed at a set position on the structure 3. A clamp 141 that binds the movement of the end of the fixed strap part 140 is coupled to the fixed strap part 140.

4 and 5, an embodiment of the present invention and a rotating body 110 include a rotating pulley 111 and a rotating shaft 112.

The rotary pulley 111 has a structure of a rotating cylinder capable of winding the rope 5 around. The rope 5 has a length that is longer than the distance to the upper end of the structure 3 and is wound on a separate rope reel (not shown) arranged on the ground, and one end is 3 to 5 around the circumference of the rotary pulley 111. After the wheel is wound, it is connected to the aerial worker, or one end is connected to the aerial worker in a state wound around the rotary pulley 111.

The rotation shaft 112 is a device portion for rotatably supporting the rotation pulley 111, one end is connected to the rotation pulley 111, the other end is connected to the fixture 120. The rotation shaft 112 may rotatably support the rotation pulley 111 including a bearing or the like. When the rope (5) is released from the rotary pulley (111) or is moved to be wound around the rotary pulley (111), the rotary pulley (111) is in the forward direction or around the rotation shaft (112) by a displacement corresponding to the movement of the rope (5). It rotates in the reverse direction.

For example, when the aerial worker moves upward on the structure 3, the end of the rope 5 connected to the aerial worker moves upward away from the rotation pulley 111, and the rotation pulley 111 and the rope reel rotate in the forward direction. And, when the rope reel is rotated in the reverse direction and wound, the end of the rope 5 is moved downward, and the rotary pulley 111 is rotated in the reverse direction.

Referring to FIG. 4, the fixture 120 according to an embodiment of the present invention includes a fixing plate 121 and a latch engaging portion 122.

The fixing plate 121 has a disk shape and is connected to the fixing strap portion 140. The latch engaging portion 122 is a device portion that provides a serrated locking jaw through which the latch 131 of the latch portion 130 is caught, and is a latch 131 on one side of the fixing plate 121 facing the latch portion 130. ) Is formed continuously in a circular path along the rotational trajectory of ).

On the fixture 120, a rope guide (not shown) formed to extend toward the rotating body 110 at a position corresponding to the outer side in the radial direction of the rotating body 110 may be coupled. The rope guide is in contact with the rope 5 wound around the rotating body 110 and constrains the loosening of the rope 5 and guides the rope 5 in the drawing direction or the moving direction upward. The rope (5) can be prevented from becoming difficult by using a rope guide.

6 is an exploded perspective view schematically showing a latch part of an automatic rope stopping device for preventing fall of a high place worker according to an embodiment of the present invention, and FIG. 7 is an automatic rope stopping device for preventing fall of a high place worker according to an embodiment of the present invention. Is an operation state diagram illustrating the operation of the latch unit when the rotating body of is rotated below the set speed, and FIG. 8 is a rotating body of the automatic rope stopping device for preventing fall of a high place worker according to an embodiment of the present invention. It is an operation state diagram illustrating the operation of the latch unit when it is rotated.

6 and 7, the latch unit 130 according to an embodiment of the present invention includes a latch 131, a latch rotation shaft 132, and a latch tangent spring 133.

The latch 131 is rotatably coupled to the rotating body 110 by the latch rotation shaft 132 and is disposed to be spaced apart from the inside of the latch engaging portion 122 in the radial direction. A plurality of latches 131 are disposed to extend in the circumferential direction at a set interval. The latch rotation shaft 132 is connected to the rotating body 110 and supports one end of the latch 131 so as to be rotatable.

The latch tangent spring 133 is installed to elastically support the latch 131 to maintain the initial angle as shown in FIG. 7 when the rotating body 110 is rotated below a set speed. When the rotating body 110 rotates above the set speed, the latch tangent spring 133 is elastically deformed by being pushed against the centrifugal force acting on the latch 131, and the latch 131 is rotated around the latch rotation shaft 132 The end is caught in the latch engaging portion 122 located radially outward.

When the rope 5 is moved, the rotating body 110 to which the rope 5 is bound is rotated in the forward or reverse direction by a displacement corresponding to the movement of the rope 5. At this time, when the moving speed of the rope 5 is less than the set speed, that is, when the rotation speed of the rotating body 110 is less than the set speed, the latch 131 maintains the initial angle as shown in FIG. It rotates with (110).

When the aerial worker falls, the rope 5 connected to the aerial worker is pulled and moved at high speed.In order to secure the expected movement speed of the rope 5, the rotational speed of the rotating body 110, or the safety when the aerial worker falls When a speed lower than the speed by the set value is set as the set speed, the plurality of latches 131 coupled to the rotating body 110 when the aerial worker falls, rotates as shown in FIG. 8 by centrifugal force, and the fixed body 120 ) Is caught by the latch engaging portion 122 formed on the top, and the rotation of the rotating body 110 and the loosening of the rope 5 are automatically stopped.

FIG. 9 is an enlarged view of part B of FIG. 1, and FIG. 10 is a perspective view schematically showing a rope holding device for preventing fall of a high place worker according to an embodiment of the present invention.

Referring to Figures 9 and 10, the rope holding device 2 for preventing fall of a high place worker according to an embodiment of the present invention includes a footrest bolt fitting portion 210, a spiral buffer member 220, a fixing member 230 do.

The footrest bolt fitting part 210 is fitted into the footrest bolt 4 of the structure 3. The spiral cushioning member 220 is a device for elastically supporting the rope 5 when the person at height falls, has a shape extending upward in a spiral, and is connected to the footrest bolt fitting part 210. The spiral buffer member 220 is made of a material having elasticity such as a metal material. The rope 5 connected to the high place worker passes through a hollow space 228 formed to extend in the vertical direction at the center of the spiral buffer member 220, thereby being bound to the spiral buffer member 220 and at the same time being bound to the spiral buffer member 220 ), it extends in the vertical direction without interference.

The fixing member 230 is a device for fixing the footrest bolt fitting portion 210 to the footrest bolt 4, and has a structure of a bolt member and penetrates the footrest bolt fitting portion 210 and is press-contacted to the footrest bolt 4. The footrest bolt fitting part 210 is fitted into the footrest bolt 4 in a state in which the angle is adjusted so that the spiral buffer member 220 has an upwardly extended shape, and the fixing member 230 is the footrest bolt fitting part 210 By penetrating through and press-contacting the footrest bolt 4, the footrest bolt fitting part 210 is coupled to and fixed to the footrest bolt 4.

FIG. 11 is an exploded perspective view schematically showing a rope holding device for preventing fall of a high place worker according to an embodiment of the present invention, and FIG. 12 is a first stage of a rope holding device for preventing fall of a high place worker according to an embodiment of the present invention. It is a partial cross-sectional view schematically showing a state in which the footrest bolt is inserted into the insertion part, and FIG. 13 is a schematic view of a state in which the footrest bolt is inserted into the second stage insertion part of the rope holding device for preventing fall of a high place worker according to an embodiment of the present invention. It is a partial cross-sectional view shown.

Referring to Figure 11, the footrest bolt fitting portion 210 according to an embodiment of the present invention includes a bolt cap portion 211 and a bolt insertion groove 215.

The bolt cap portion 211 has a shape capable of covering the end of the footrest bolt 4 and is coupled to the end of the footrest bolt 4. The bolt cap portion 211 is connected to the spiral buffer member 220, and the fixing member 230 is detachably coupled. Referring to FIG. 11, the bolt cap portion 211 according to an embodiment of the present invention includes a cap body portion 212, a buffer coupling portion 213, and a fixed coupling portion 214.

The cap body portion 212 is a device that forms the basic frame of the bolt cap portion 211, has a cross-sectional shape of a'C' shape, and is fitted to the end of the footrest bolt 4. The cap body 212 is capable of supporting a load applied to the helical buffer member 220 and has a rigidity capable of supporting a fastening force with the fixing member 230 and a pressure contact force with the footrest bolt 4.

The buffer coupling portion 213 is a device portion to which the spiral buffer member 220 is coupled, and has a structure of a hole portion and is formed to extend laterally on one side in the lateral direction of the cap body portion 212. The fixed coupling portion 214 is a device portion to which the fixing member 230 is fastened, and is formed to communicate with the bolt insertion groove 215 at a position spaced apart from the buffer coupling portion 213, and has a structure of a female screw.

Referring to Figure 12, the fixed coupling portion 214 is disposed at a set distance (d) from the inner end of the bolt insertion groove 215. At this time, the set distance may be set to a distance corresponding to the thickness of the head portion of the footrest bolt 4. When the fixed coupling portion 214 is disposed at a distance corresponding to the thickness of the head of the footrest bolt 4 from the inner end of the bolt insertion groove 215, one end of the head of the footrest bolt 4 is a bolt insertion groove ( In contact with the inner end of 215, the other end is in contact with the fixing member 230.

Accordingly, the fixing member 230 is hung on the head of the footrest bolt 4, so that the footrest bolt fitting portion 210 can stably restrain the flow and movement toward the end of the footrest bolt 4, and the footrest bolt It is possible to prevent the fitting portion 210 from being separated from the footrest bolt 4. 11 to 13, the fixing coupling part 214 according to an embodiment of the present invention includes a first fixing hole part 214a and a second fixing hole part 214b.

The first fixing hole portion 214a is formed through the cap body portion 212, and a set distance d is spaced from the inner end portion of the first end insertion portion 216 (described below) of the bolt insertion groove portion 215 Is placed. The second fixing hole 214b is formed through the cap body 212 with a set distance d from the inner end of the second end insertion portion 217 (described below) of the bolt insertion groove 215. According to this arrangement, the first fixing hole portion 214a and the second fixing hole portion 214b are arranged at a distance corresponding to the depth of the second stage insertion portion 217 with respect to the extending direction of the footrest bolt 4 do.

In addition, the first fixing hole portion 214a and the second fixing hole portion 214b are not located on a single straight line parallel to the extension direction of the footrest bolt 4, that is, parallel to the extension direction of the cap body portion 212. , Are arranged to be spaced apart from each other in the circumferential direction of the cap body portion 212. By disposing the first fixing hole portion 214a and the second fixing hole portion 214b to be spaced apart from each other in the extending direction and circumferential direction of the cap body portion 212 as described above, a plurality of fixed couplings on the cap body portion 212 It is possible to further reduce the decrease in rigidity of the cap body portion 212 by penetrating the portion 214.

The bolt insertion groove 215 is a hollow space in which the end of the footrest bolt 4 is inserted and accommodated, and has one end open in the inside of the bolt cap 211. The bolt insertion groove 215 has a radial width corresponding to the width of the head of the footrest bolt 4 and has a polygonal cross-sectional shape corresponding to the cross-sectional shape of the footrest bolt 4. Accordingly, it is possible to prevent the footrest bolt fitting portion 210 from rotating arbitrarily while the footrest bolt fitting portion 210 is inserted into the footrest bolt 4, and stabilize the state in which the spiral buffer member 220 is extended upward. I can keep it. 12 and 13, the bolt insertion groove 215 according to an embodiment of the present invention includes a first stage insertion portion 216 and a second stage insertion portion 217.

The first end insertion portion 216 is formed to extend in one direction inside the bolt cap portion 211 and has a first width. The second-stage insertion portion 217 is formed to be in communication with the end of the first-stage insertion portion 216 and has a second width smaller than the first width. For example, the first end insertion portion 216 and the second end insertion portion 217 may be formed to have a width of 20 mm and 16 mm, respectively.

As the first-stage insertion portion 216 and the second-stage insertion portion 217 have a structure formed in succession, the bolt insertion groove 215 having a width (diameter) corresponding to each of the footrest bolts 4 of different standards Without the need to separately manufacture and apply the footrest bolt fitting portion 210 having a ), the footrest bolts 4 having different standards are selectively inserted into the first stage insertion portion 216 or the second stage insertion portion 217 By positioning, its application can be made easily and universally.

Referring to Figures 10 and 11, the spiral buffer member 220 according to an embodiment of the present invention includes a cap coupling portion 221 and a separation preventing buffer portion 224.

The cap coupling portion 221 is a device portion coupled to the footrest bolt fitting portion 210 of the spiral buffer member 220, and is press-fitted and fixed to the buffer coupling portion 213 of the footrest bolt fitting portion 210. Referring to FIG. 11, a cap coupling portion 221 according to an embodiment of the present invention includes a cap fixing portion 222 and a lateral extension portion 223.

The cap fixing portion 222 corresponds to the diameter of the buffer coupling portion 213 or has a diameter that is larger than the diameter of the buffer coupling portion 213, and is fitted and fixed to the buffer coupling portion 213 having a structure of a hole portion or a groove portion. . A plurality of uneven portions are formed to protrude on an outer surface portion of the cap fixing portion 222 in contact with the buffer coupling portion 213. The cap fixing portion 222 may be in clear frictional contact and pressure contact with the inner surface of the buffer coupling portion 213 by the uneven portion.

The lateral extension part 223 is connected to the cap fixing part 222, extends laterally, and protrudes to the outside of the footrest bolt fitting part 210. By the lateral extension part 223, the separation prevention buffer part 224 is positioned on one side of the footrest bolt fitting part 210 and the footrest bolt 4 in the lateral direction. Accordingly, it is possible to prevent the rope 5 bound to the departure prevention buffer 224 in a form extending in the vertical direction from interfering with the footrest bolt 4.

Departure prevention buffer unit 224 is a device unit that cushions the impact force acting on the operator at height by elastically supporting the load acting on the rope 5 connected to the operator at height when the operator falls, and is continuous with the cap coupling unit 221 Is formed, and is bent in a spiral outside of the footrest bolt fitting portion 210 and extends upward.

Departure prevention buffer part 224 has a shape wound in a spiral, and thus has an extended length that is wound at least one turn. Accordingly, the rope 5 is not separated to the outside of the space portion 228 in a state that is fitted in the central space portion 228. 10 and 11, the separation prevention buffer unit 224 according to an embodiment of the present invention includes a proximity arrangement bent portion 225, a basic spiral portion 226, a separation prevention spiral portion 227, and a rope entry Includes part 229.

The proximity arrangement bent portion 225 is a portion of the separation prevention buffer portion 224 connected to the fixed coupling portion 214 continuously, from the end of the lateral extension portion 223 formed to extend in the lateral direction toward the structure 3 It has a shape bent at right angles. Departure prevention buffer 224 and the rope 5 bound thereto can be positioned closer to the structure 3 by the proximity arrangement bend 225, minimizing interference with the upward movement of the aerial worker can do.

The basic spiral portion 226 is formed in succession with the proximity arrangement bent portion 225, is wound one round in a spiral and extends upward. The basic spiral portion 226 is formed to extend from point P1 to point P2 in FIGS. 10 and 11. The lower portion of the basic spiral portion 226 has a shape extending in a direction closer to the structure 3 from the adjacent arrangement bent portion 225.

The separation preventing spiral portion 227 is formed in a spiral shape above the basic spiral portion 226. For example, the departure preventing spiral portion 227 may be formed to extend to a length corresponding to half a turn. The separation preventing spiral portion 227 is formed to extend from point P2 to point P3 in FIGS. 10 and 11.

A space portion 228 that is open in the vertical direction is formed in the central portion of the basic spiral portion 226 and the separation preventing spiral portion 227. The rope inlet portion 229 is formed to be hollow with a width through which the rope 5 can pass between the basic spiral portion 226 and the departure preventing spiral portion 227, and communicates with the space portion 228.

The aerial worker enters the rope entry part 229 by placing the rope 5 between the points P1 and P2 while maintaining the upwardly extended state in bringing the rope 5 into the space part 228. And, by moving the rope 5 along the rope entry part 229 in a circular path to the point P3, on the space part 228, more specifically through the space part 228, extending in the vertical direction. Can be placed.

As shown in FIG. 10, the rope 5 is restrained from moving in the lateral direction by the basic spiral portion 226 and the departure preventing spiral portion 227 in a state positioned in the space portion 228. In addition, as described above, as long as the operating force that moves in a circular trajectory along the rope inlet 229 is not intentionally applied to the rope 5, the rope 5 is caused by an arbitrary external force acting in the lateral and vertical directions. It is possible to stably prevent the helical buffer member 220 from being separated from the outside.

Referring to FIG. 11, the fixing member 230 according to an embodiment of the present invention includes a pressure welding bolt portion 231 and a gripping portion 232.

The pressure welding bolt part 231 has a structure of a male screw, and is selectively applied to the fixing coupling part 214 of the footrest bolt fitting part 210, and more specifically, the first fixing hole part 214a and the second fixing hole part 214b. It is concluded with. The pressure welding bolt part 231 is fastened through the fixed coupling part 214, and one end of the bolt insertion groove 215 is press-contacted to the footrest bolt 4. By this action, it is possible to bind and fix the footrest bolt fitting part 210 to the footrest bolt 4.

The gripping part 232 is formed in a shape capable of gripping the other end of the pressure welding bolt part 231 located outside the footrest bolt fitting part 210. The high place worker can easily apply the rotational force to the pressure welding bolt part 231 by using the gripping part 232, without having to provide a separate tool for applying the rotational force to the separate bolt member.

14 is a flowchart illustrating a method for preventing an aerial worker fall according to an embodiment of the present invention, and FIG. 15 is a diagram illustrating a rope binding and proceeding step of the method for preventing an aerial worker fall according to an embodiment of the present invention. It is a conceptual diagram shown to explain.

Referring to FIGS. 1 and 14, the method of preventing a fall of an aerial worker according to an embodiment of the present invention includes an automatic rope stop device installation step (S1), an upward movement start step (S2), a rope holding device installation step (S3), It includes a rope binding and proceeding step (S4), a rope top fixing step (S5).

In the automatic rope stopping device installation step (S1), an automatic rope stopping device 1 that restrains the movement of the rope 5 when the rope 5 moves above a set speed is fixed to the lower part of the structure 3. In the upward movement start step (S2), the rope 5 bound to the automatic rope stopping device 1 is connected with the aerial worker, and the first aerial worker moves toward the upper part of the structure 3.

After the upward movement start step (S2), the first high place operator alternately performs the rope holding device installation step (S3) and the rope binding and proceeding step (S4) a plurality of times during the upward movement. In the rope holding device installation step (S3), the rope holding device 2 having a spring structure extending upward in a spiral is fixed to the footrest bolt 4 installed on the structure 3. In the rope binding and proceeding step (S4), the first high place worker binds the rope 5 to the rope holding device 2 and continues the upward movement.

In the rope holding device installation step (S3), the bolt insertion groove 215 is inserted into the end of the footrest bolt 4, as shown in Figs. 12 and 13, the first stage insert 216 and the second stage insert Step (S3-1) of selectively fitting one of the parts 217, and fastening the fixing member 230 to the footrest bolt fitting portion 210 to fix the footrest bolt fitting portion 210 to the footrest bolt 4 It includes step S3-2.

In the rope binding and proceeding step (S4), the first high place worker inserts the rope 5 through the spiral buffer member 220, and a circular path along the extending direction of the spiral buffer member 220 as shown in FIG. While moving to, the space portion 228 is positioned to pass upward.

Referring to FIG. 10, the first aerial worker can enter the rope inlet 229 by placing the rope 5 between the points P1 and P2 while maintaining the rope 5 in an upwardly extended state. , By moving the rope 5 along the rope entry part 229 in a circular path to the point P3, it can be located on the space part 228, more specifically through the space part 228 and extend in the vertical direction. I can.

When the first aerial worker reaches the set height of the structure (3) while alternately performing the rope holding device installation step (S3) and the rope binding and proceeding step (S4) a plurality of times, the first aerial worker is the rope top fixing step (S5). Perform. In the rope upper fixing step (S5), the upper end of the rope 5 is fixed to the uppermost part of the structure 3. In fixing the upper end of the rope 5 to the structure 3, the end of the rope 5 can be tied to the structure 3 and then fixed by a knot or the like.

FIG. 16 is a use state diagram illustrating a use state of preventing a fall of a high place worker by a rope holding device for preventing a fall of an aerial worker according to an embodiment of the present invention, and FIG. 17 is an enlarged view of part C of FIG. 16.

If the first aerial worker falls from the structure 3 while performing the rope holding device installation step (S3) and the rope binding and proceeding step (S4) at least once before performing the rope top fixing step (S5), The rope 5 connected to the first high place worker is caught by the spiral buffer member 220 as shown in Figs. 16 and 17, and the rope 5 is caught on the spiral buffer member 220, and the falling force of the first high place worker ( When the rope 5 is momentarily moved above the set speed due to weight, gravity, etc.), the movement and withdrawal of the rope 5 is stopped by the automatic rope stopping device 1. By this action, it is possible to stably prevent the fall of the first high place worker.

As shown in FIGS. 16 and 17, the moment when the rope 5 is applied to the spiral buffer member 220, the impact force corresponding to the first high place operator's dropping force and stopping force is buffered by the elastic force of the spiral buffer member 220 It is possible to prevent the first high place worker from receiving an unreasonable impact due to the sudden stop of movement or change of the moving direction during the fall.

In performing the rope holding device installation step (S3), if the rope holding device 2 is installed at a set height interval (for example, 5 to 10 m), the fall height of the first aerial worker is set corresponding to the set height interval. It can be limited to the height.

As described above, the first high place worker is the automatic rope stop device installation step (S1), the upward movement start step (S2), the rope holding device installation step (S3), the rope binding and proceeding step (S4), the rope top fixing step (S5). Through it, the upper end of the rope 5 corresponding to the lifeline can be securely fixed to the uppermost end of the structure 3. After the rope (5) corresponding to the lifeline is installed, the aerial worker performing work on the structure (3) follows the rope (5) while connecting the seat belt (7) connected to the aerial worker to the rope (5). It can be safely moved to the top of the structure 3.

At the end of the seat belt 7 connected to the rope 5, an ascending machine 6 is coupled. One side of the ascending machine 6 is connected to the seat belt 7, and the other side of the ascending machine 6 is formed with a hole through which the rope 5 can be inserted. The high place worker can safely move along the extension direction of the rope 5 while being bound to the rope 5 by the seat belt 7 and the ascender 6.

At this time, the seat belt 7 connected to the high place worker is upward along the spiral trajectory of the rope inlet 229 as when the rope 5 is bound to the rope holding device 2 as shown in FIG. By moving, it is possible to pass through the rope holding device 2 while maintaining the state bound to the rope 5.

According to the rope holding device (2) for preventing the fall of the high place worker according to the present invention having the above configuration and the fall prevention method of the high place worker using the same, the rope holding device (2) is attached to the scaffold bolt (4) installed in the structure (3). Through a simple process of fastening and binding the rope 5 to the rope holding device 2, a safety device capable of preventing a fall of a high place worker can be easily applied.

According to the present invention, the rope holding device 2 can interfere with the movement of the rope 5 connected to the high place worker when the person at high place falls, and at the same time buffer the impact force acting on the person at high place. It is possible to prevent a fall due to an accident and injury due to an impact force, etc., thereby improving the efficiency and quality of the boarding work.

In the past, only a device for preventing the fall of high place workers with the lifeline already installed has been disclosed, and a safety device for the safety of the first high place worker who climbs the structure 3 to install the lifeline has not been disclosed. According to the invention, all aerial workers, including the first aerial worker, who work on the structure 3 after the lifeline is installed, and the aerial worker who comes down after dismantling the lifeline, can safely perform the work.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is only illustrative, and those of ordinary skill in the field to which the technology pertains, various modifications and other equivalent embodiments are possible. I will understand. Therefore, the true technical protection scope of the present invention should be determined by the following claims.

1: automatic rope stopping device 2: rope holding device
3: structure 4: footrest bolt
5: rope 6: ascent
7: seat belt 110: rotating body
111: rotary pulley 112: rotary shaft
120: fixed body 121: fixed plate
122: latch engaging portion 130: latch portion
131: latch 132: latch pivot shaft
133: latch tangent spring 140: fixed strap portion
141: clamp 210: footrest bolt fitting portion
211: bolt cap portion 212: cap body portion
213: buffer coupling portion 214: fixed coupling portion
214a: first fixing hole 214b: second fixing hole
215: bolt insertion groove 216: first stage insertion portion
217: second stage insertion portion 220: spiral buffer member
221: cap coupling portion 222: cap fixing portion
223: lateral extension part 224: separation prevention buffer part
225: proximity arrangement bent portion 226: basic spiral portion
227: separation prevention spiral part 228: space part
229: rope inlet 230: fixing member
231: pressure welding bolt part 232: gripping part

Claims (17)

A footrest bolt fitting portion fitted to the footrest bolt of the structure;
A spiral buffer member having a shape extending upward in a spiral shape, connected to the footrest bolt fitting portion, and passing a rope connected to the aerial worker through a central space portion; And
And a fixing member fastened to the footrest bolt fitting part and press-contacted to the footrest bolt.
The method of claim 1,
The footrest bolt fitting portion,
A bolt cap portion covering an end of the footrest bolt; And
A rope holding device for preventing fall of a high place worker, comprising: a bolt insertion groove formed with one end open in the bolt cap part and into which the end of the footrest bolt is inserted.
The method of claim 2,
The bolt cap portion,
Cap body portion;
A buffer coupling portion formed on one side of the cap body portion and to which an end portion of the spiral buffer member is coupled; And
And a fixing coupling part formed in communication with the bolt insertion groove part at the other side of the cap body part and through which the fixing member penetrates.
The method of claim 2,
The bolt insertion groove portion,
A first end insertion portion formed to extend in one direction inside the bolt cap portion and having a first width; And
And a second-stage insertion portion formed in communication with the end of the first stage insertion portion and having a second width smaller than the first width.
The method of claim 4,
The fixed coupling part,
A first fixing hole formed at a set distance from an inner end of the first end insertion portion; And
And a second fixing hole formed at a set distance from the inner end of the second stage insertion part, and disposed to be spaced apart from the first fixing hole in a circumferential direction.
The method of claim 2,
The bolt insertion groove portion,
Rope holding device for preventing fall of a high place worker, characterized in that it has a polygonal cross-sectional shape corresponding to the cross-sectional shape of the footrest bolt.
The method of claim 1,
The spiral buffer member,
A cap coupling portion coupled to the footrest bolt fitting portion; And
A rope holding for preventing fall of a high place worker, characterized in that it comprises a; a fall prevention buffer part connected to the cap coupling part, which is bent in a spiral from the outside of the footrest bolt fitting part and extends upward, and has an extended length that is wound at least one turn. Device.
The method of claim 7,
The cap coupling portion,
A cap fixing portion fitted and fixed to the cushioning coupling portion formed in the footrest bolt fitting portion; And
And a lateral extension part connected to the cap fixing part and extending in a lateral direction and protruding to the outside of the footrest bolt fitting part.
The method of claim 7,
The departure prevention buffer unit,
A proximity arrangement bent part connected to the fixed coupling part and bent toward the structure;
A basic spiral portion connected to the proximity arrangement bent portion, wound one round in a spiral shape and extending upward;
A separation preventing spiral portion formed to extend in a spiral shape above the basic spiral portion and forming the space portion open in a vertical direction together with the basic spiral portion; And
A rope holding device for preventing fall of a high place worker, comprising: a rope inlet portion formed to be hollow with a width through which the rope can pass between the basic spiral portion and the departure preventing spiral portion, and communicated with the space portion.
The method of claim 1,
The fixing member,
A pressure-welding bolt portion which is fastened through the footrest bolt fitting portion and has one end portion pressed against the footrest bolt; And
And a gripping part formed in a shape capable of gripping the other end of the pressure-welding bolt part located outside the footrest bolt fitting part.
An automatic rope stop device installation step of fixing an automatic rope stop device for restraining the movement of the rope when the rope moves above a set speed;
An upward movement start step of connecting the rope bound to the automatic rope stopping device and moving toward the upper part of the structure;
During upward movement, a rope holding device installation step of fixing a rope holding device having a spring structure extending upward in a spiral shape to a footrest bolt installed in the structure;
A rope binding and proceeding step of binding the rope to the rope holding device and continuing upward movement; And
And a rope top fixing step of fixing the rope to an upper portion of the structure when reaching the set height of the structure.
The method of claim 11,
The automatic rope stopping device,
A rotating body in which the rope is wound and rotated in association with the movement of the rope;
A fixture disposed coaxially with the rotating body and having a latch engaging portion formed thereon; And
And a latch part rotatably coupled to the rotating body and rotated in the radial direction of the rotating body by a centrifugal force when the rotating body rotates above a set speed, and is caught by the latch engaging part. Fall prevention method.
The method of claim 12,
The latch part,
A latch disposed to be spaced apart from the inside of the latch engaging part in a radial direction;
A latch pivot shaft connected to the rotating body and rotatably supporting the latch; And
A method for preventing fall of a high place worker, comprising: a latch elastic spring that elastically supports the latch to maintain an initial angle, and is elastically deformed by a centrifugal force acting on the latch when the rotating body rotates above a set speed.
The method of claim 12,
The automatic rope stopping device,
And a fixing strap part connected to the fixture and surrounding the structure and fixed at a set position on the structure.
The method of claim 11,
The rope holding device,
A footrest bolt fitting part fitted to the footrest bolt;
A spiral buffer member having a shape extending upward in a spiral shape, connected to the footrest bolt fitting portion, and passing the rope through a central space portion; And
And a fixing member fastened to the footrest bolt fitting part and press-contacted to the footrest bolt.
The method of claim 15,
The rope holding device installation step,
Selectively inserting one side of the first stage insertion portion formed with a first width on the footrest bolt fitting portion and the second stage insertion portion formed with a second width smaller than the first width to the end of the footrest bolt ; And
Fastening the fixing member to the footrest bolt fitting portion; A method for preventing fall of an aerial worker comprising a.
The method of claim 15,
The rope binding and proceeding step,
A method for preventing fall of a worker at high place, characterized in that the rope is inserted between the spiral buffer members and moved in a circular path along the extending direction of the spiral buffer member, and the space is positioned to pass upward.

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