KR102600088B1 - Fall prevention device with free horizontal movement of steel tower - Google Patents

Abstract

The fall prevention device of the present invention, which allows free horizontal movement of a steel tower, includes a safety support rail installed horizontally surrounding the outer peripheral surface of the steel tower; A plurality of towing hooks installed on the steel tower pillar frame at a predetermined distance above the safety support rail and having openings facing forward; It is installed to accommodate a safety support rail and is connected to a towing hook, so that it can move horizontally along the safety support rail, and is connected to the worker's safety vest and a safety wire. It includes a safety work device, where the safety support rail is perpendicular to the longitudinal direction. and a rail connecting bar connected to the steel tower column frame horizontally with the ground; And a rail recess formed along the lower longitudinal direction to a predetermined depth; further comprising a safety work mechanism, a fall prevention unit that accommodates the safety support rail and limits the loosening of the safety wire connected to the safety vest when the worker falls; A tow rope that penetrates the inside of the tow hook and is provided to surround the steel tower in a ring shape; And a tow bar that is bent to connect the upper surface of the fall prevention unit and the inside of the tow hook through the opening, and has a tow rope inserted into the tow hole formed in the horizontal direction at the tip.

Description

Fall prevention device with free horizontal movement of steel tower}

The present invention relates to a fall prevention device that allows free horizontal movement of a steel tower. More specifically, when a worker performs high-altitude work on a steel tower by connecting a safety vest to a safety work device, it is connected to the worker's safety vest to prevent the worker from falling. A safety support rail on which workers can step is installed horizontally around the outer circumference of the steel tower, and a plurality of towing hooks with openings facing forward are installed on the tower pillar frame at a predetermined distance above the safety support rail and accommodate the safety support rail. It is equipped with a safety work device that is installed to be connected to a tow hook, moves horizontally along the safety support rail, and limits the release of the safety wire when a fall is detected. The safety work device is equipped with a tow rope, and the tow rope is hung on the tow hook and attached to the steel tower. It is equipped to surround the safety support rail and allows the safety work tool to be moved to the worker's position by pulling the towing rope at any point on the safety support rail. This is a horizontal iron tower that can be connected to the safety work tool without the risk of the worker moving directly, ensuring work safety. It is about a fall prevention device that is free to move.

In order to ensure the safety of workers when working on high-altitude steel towers such as power transmission towers, workers wear safety vests and connect to the tower. Conventional tower safety devices consist of a wire of a predetermined length wound and a carabiner or hook attached to one end and the other end of the wire. , one end is connected to the safety vest and the other end is connected to the rope installed on the pylon, so if the worker loses balance or falls during work, the safety vest-mounted wire connected between the safety vest and the pylon rope supports the worker and prevents the fall. It can work as a structure.

The above-mentioned conventional safety devices do not prevent the worker from falling or operate at the moment of the fall, so once the worker loses his balance and falls from the tower, he descends the length of the wire and hangs on the end of the wire and floats in the air next to the tower. , there is the problem of having to wait until the rescue team arrives, so not only is the body severely damaged, but the psychological impact is also significant.

Accordingly, a device has been developed and installed that connects the wires of the safety vest to multiple locations on the steel tower and immediately limits the unwinding of the wire when a fall is detected while performing safe work.

For example, in the case of Registered Patent Document No. 10-2061329 (“Safety device for preventing falls of transmission towers”), a fall prevention device equipped with a safety function was proposed on a vertical steel tower rope, and the worker must perform work on one side of the tower, but it is not safe to do so. If the device is placed on the other side of the tower, measures such as taking risks must be taken to move to the other side of the tower, connect to the safety vest, and then return to one side of the tower. There are also problems with safety measures not functioning properly due to distance.

In addition, there are disadvantages in that the structure and equipment are complicated and costs increase, such as having to be equipped with an impact detection sensor and proximity detection means to detect a fall.

As a result, safe movement and support on the steel tower can be guaranteed, and safety devices and safety vests can be immediately connected wherever the work site is located, eliminating the need for workers to move dangerously and unnecessaryly on the steel tower, and immediately upon detecting a worker's fall. As the loosening of the wire is limited, a safety work device is needed that can immediately stop the worker without falling.

Republic of Korea Patent Publication No. 10-2061329

The present invention was created to solve the above-mentioned problems in the prior art, and when a worker performs high-altitude work on a steel tower by connecting a safety vest to a safety work device, it is connected to the worker's safety vest to prevent the worker from falling. A safety support rail on which workers can step is installed horizontally around the outer circumference of the steel tower, and a plurality of towing hooks with openings facing forward are installed on the tower pillar frame at a predetermined distance above the safety support rail and accommodate the safety support rail. It is equipped with a safety work device that is installed to be connected to a tow hook, moves horizontally along the safety support rail, and limits the release of the safety wire when a fall is detected. The safety work device is equipped with a tow rope, and the tow rope is hung on the tow hook and attached to the steel tower. It is equipped to surround the safety support rail and allows the safety work tool to be moved to the worker's position by pulling the towing rope at any point on the safety support rail. This is a horizontal iron tower that can be connected to the safety work tool without the risk of the worker moving directly, ensuring work safety. The purpose is to provide a fall prevention device that can move freely.

The above objects and various advantages of the present invention will become more apparent to those skilled in the art from preferred embodiments of the present invention.

The present invention is intended to achieve the above object,

A fall prevention device that allows free horizontal movement of a steel tower according to an embodiment of the present invention includes a safety support rail installed horizontally surrounding the outer peripheral surface of the steel tower; A plurality of towing hooks installed on the steel tower pillar frame at a predetermined distance above the safety support rail and having openings facing forward; It is installed to accommodate a safety support rail and is connected to a towing hook, so that it can move horizontally along the safety support rail, and is connected to the worker's safety vest and a safety wire. It includes a safety work device, where the safety support rail is perpendicular to the longitudinal direction. and a rail connecting bar connected to the steel tower column frame horizontally with the ground; And a rail recess formed along the lower longitudinal direction to a predetermined depth; further comprising a safety work mechanism, a fall prevention unit that accommodates the safety support rail and limits the loosening of the safety wire connected to the safety vest when the worker falls; A tow rope that penetrates the inside of the tow hook and is provided to surround the steel tower in a ring shape; And a tow bar that is bent to connect the upper surface of the fall prevention unit and the inside of the tow hook through the opening, and has a tow rope inserted into the tow hole formed in the horizontal direction at the tip.

According to one embodiment, the fall prevention unit includes a case; An accommodating portion formed as an inner space of the case to accommodate a support rail at the upper portion and a control portion and a rotating portion at the lower portion of the safety support rail; A rail receiving surface forming a circular cross-section corresponding to the safety support rail as a space for receiving the support rail at the upper part of the receiving portion; and a connecting bar receiving device having an opening formed on one side of the rail receiving surface to one side of the case with a width capable of accommodating the rail connecting bar.

According to one embodiment, the fall prevention unit includes a control unit that raises and lowers a control trigger and controls the operation of the rotating unit; And a rotating part located at the bottom of the control part, where the safety wire connected to the safety vest is wound and rotates, and engages with the control trigger when the control trigger is lowered, and the rotation is limited. The control part includes a plurality of components at both inner ends of the receiving part, , a bar-shaped control trigger that is accommodated in close contact with the rail groove at the upper part, faces the rotating part at the lower part, and is pressed and raised and lowered by the support rail according to the inclination of the case; A trigger spring that surrounds and is coupled to the outer peripheral surface of the control trigger; A spring fixing protrusion that secures the trigger spring to the inner peripheral surface of the receiving portion; and trigger teeth protruding from the lower part of the control trigger, wherein the rotating part includes a plurality of braking discs located below the control trigger and having braking teeth formed on the outer peripheral surface. and a horizontal axis connecting the braking discs, with a safety wire wound around the center and a rotation axis coupled to the inner surface of the receiving portion at both side ends.

According to one embodiment, the connection bar receiving device includes one passing surface in contact with the rail receiving surface; And a passing surface formed on the outer surface of the case; wherein the passing surface is formed wider than the passing surface, so that the connecting bar receiving device has a shape that spreads from the inside to the outside.

According to one embodiment, the rail connection bar is eccentrically disposed in the lower direction of the connection bar accommodation, and the distance between the upper end of the connection bar accommodation and the rail connection bar is formed to be longer than the distance between the bottom of the connection bar accommodation and the rail connection bar. do.

Specific details of other embodiments are included in the detailed description and drawings.

According to the fall prevention device of the present invention that allows free horizontal movement of a steel tower, the following effects can be obtained.

First, no matter where the safety work equipment is located on the path of the safety support rail of the steel tower, the safety work equipment can be moved to the place where the worker is located, so the worker does not have to make a dangerous move to the place where the safety work equipment is located, thereby improving the work efficiency. Safety is greatly expanded.

Second, the safety support rail requires only one safety work device, enabling economical and efficient facility construction and operation.

Third, the safety work equipment is equipped with a fall prevention unit, so that if the worker loses his balance and falls from the safety support rail, the loosening of the safety wire connected to the safety vest is immediately restricted, thereby preventing the worker from falling.

Fourth, free and safe horizontal movement is possible while connected to safety work equipment and tow hooks along the safety support rail.

Fifth, when the worker trips and tilts, the fall prevention unit also tilts, limiting the loosening of the safety wire. The control unit that moves up and down can be driven in a way that engages the wire rotating part with teeth, eliminating the need for electronic devices such as sensors. The simple structure can solve problems such as malfunctions or decreased durability.

Figure 1 is an overall configuration diagram of a fall prevention device that allows free horizontal movement of a steel tower according to an embodiment of the present invention.
Figure 2 is a perspective view showing the coupling relationship between a tow hook, a safety work mechanism, and a safety support rail according to an embodiment of the present invention.
Figure 3 is a perspective view showing the connection between a fall prevention device that allows free horizontal movement of a steel tower and a worker according to an embodiment of the present invention.
Figure 4 is a front view of a fall prevention device that allows free horizontal movement of a steel tower according to an embodiment of the present invention.
Figures 5 and 6 are cross-sectional views showing the connection relationship between a safety support rail, a tow hook, and a safety work mechanism according to one embodiment and another embodiment of the present invention.
Figures 7 and 8 are front and top views showing an example of use of a fall prevention device that allows free horizontal movement of a steel tower according to an embodiment of the present invention.
Figures 9 (a) to (b) are side and front views of a fall prevention unit according to an embodiment of the present invention.
Figures 10 (a) to (b) are cross-sectional views showing the operating principle of the fall prevention unit according to an embodiment of the present invention when it is tilted to the left or right.
Figures 11 (a) to (b) are perspective views showing a side view and an installation example of a fall prevention unit according to another embodiment of the present invention.
Figures 12 (a) to (b) are cross-sectional views showing the operating principle according to the difference in inclination of the fall prevention unit according to another embodiment of the present invention.

In order to fully understand the present invention, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

Prior to describing the present invention, the following specific structural and functional descriptions are merely illustrative for the purpose of explaining embodiments according to the concept of the present invention, and the embodiments according to the concept of the present invention may be modified and implemented in various forms. and the scope of the present invention should not be construed as being limited to the embodiments described in detail below.

In addition, since the embodiments according to the concept of the present invention can make various changes and have various forms, specific embodiments will be illustrated in the drawings and described in detail in this specification.

However, this is not intended to limit the embodiments according to the concept of the present invention to a specific disclosed form, and should be understood to include changes, equivalents, and substitutes included in the spirit and technical scope of the present invention.

This example is provided to more completely explain the present invention to those with average knowledge in the art. Therefore, the shapes of elements in the drawings may be exaggerated to emphasize a clearer description.

It should be noted that identical members in each drawing may be indicated by the same reference numerals. Detailed descriptions of well-known functions and configurations that are judged to unnecessarily obscure the gist of the present invention are omitted.

Figure 1 is an overall configuration diagram of a fall prevention device with free horizontal movement of a steel tower according to an embodiment of the present invention, and Figure 2 shows the coupling relationship of a tow hook, a safety work device, and a safety support rail according to an embodiment of the present invention. It is a perspective view, and Figure 3 is a perspective view showing the connection between a fall prevention device that allows free horizontal movement of a steel tower and a worker according to an embodiment of the present invention, and Figure 4 shows the horizontal movement of a steel tower according to an embodiment of the present invention. It is a front view of a free fall prevention device, and Figures 5 and 6 are cross-sectional views showing the connection relationship between a safety support rail, a tow hook, and a safety work device according to one embodiment and another embodiment of the present invention, and Figures 7 and 8 are front and top views showing an example of use of a fall prevention device with free horizontal movement of a steel tower according to an embodiment of the present invention, and Figures 9 (a) to (b) show a fall prevention device according to an embodiment of the present invention. These are side and front views of the prevention unit, and Figures 10 (a) to (b) are cross-sectional views showing the operating principle when the fall prevention unit according to an embodiment of the present invention is tilted to the left or right, and Figure 11 ( a) to (b) are perspective views showing a side view and an installation example of a fall prevention unit according to another embodiment of the present invention, and Figures 12 (a) to (b) are fall prevention units according to another embodiment of the present invention. This is a cross-sectional view showing the operating principle according to the difference in tilt of the unit.

The fall prevention device (1) of the present invention, which allows free horizontal movement of the steel tower, provides a function to prevent a fall accident of the worker (H) while being free to move in the horizontal direction along the outer peripheral surface of the steel tower (50), and is located at any point. Regardless of where the worker (H) is located, the safety work equipment (10) can be moved to the place where the worker (H) is located, so the worker can use the safety work equipment (10) without taking risks while not connected to the safety work equipment (10). It has the advantage of significantly securing safety because there is no need to move to the location to connect.

To this end, the fall prevention device (1), which allows free horizontal movement of the steel tower according to a preferred embodiment of the present invention, includes a safety work mechanism (10), a safety support rail (20), and a tow hook (30).

The safety work device (10) is a device that can be mounted and moved on the safety support rail (20) and the tow hook (30) and is directly connected to the safety vest (40) worn by the worker (H). It functions to ensure safe horizontal movement and prevent workers from falling in the event of a fall.

The safety support rail (20) and the tow hook (30) are fixed structures installed on the steel tower (50) and are connected to the safety work equipment (10) to ultimately connect the worker and the tower (50) so that the worker can work safely. do.

We will look at this in detail below.

First, the safety support rail 20 is a rail shape with a circular cross-section and is installed in a horizontal direction surrounding the outer peripheral surface of the steel tower 50 in a ring shape.

The safety support rail 20 is formed wider than the outer circumference of the tower 50 at a predetermined distance apart from the outer circumference of the tower 50. Therefore, in order for the safety support rail 20 to be installed, the pillar frame of the tower 50 and the safety rail are installed. A rail connecting bar (22) connecting the support rail (20) must be installed.

The rail connection bar 22 is provided horizontally with the ground while being perpendicular to the pillar frame and the safety support rail 20. In a preferred embodiment, the rail connection bar 22 has a rod shape or a circular cross-section with a smaller diameter than the diameter of the safety support rail 20. It may be a bar shape with a square cross section.

The safety support rail 20 may be provided with a rail concave portion 21 that is recessed at a predetermined depth along the longitudinal direction at the bottom.

The rail groove 21 is a space where the control unit 120, which will be described later, is coupled, and at the same time plays an important role in allowing the control unit 120 to perform a control function.

The rail groove portion 21 has a concave shape on the lower surface of the safety support rail 20 and may be a bent shape consisting of a groove upper surface 211 and two groove inclined surfaces 212. The groove upper surface 211 ) is formed horizontally on the ground in the form of a concave shape of a predetermined depth in the center of the rail groove portion 21 and is configured like the ceiling of the rail groove portion 21, and the groove inclined surface 212 is the amount of the groove upper surface 211. It is formed at an angle while extending from the side end toward the bottom of both sides, and may be configured like an inclined wall of the rail groove portion 21.

Therefore, the cross section of the rail groove portion 21 viewed from the side may be a trapezoidal shape with the groove upper surface 211 as the upper surface and the groove inclined surface 212 as the side, and the groove inclined surface 212 is the fall prevention unit 100. ) can function to operate the control unit 120 by pressing the control trigger 121 and pushing it in the downward direction when it is tilted. This will be explained in detail later.

The safety work mechanism 10 may be installed on the safety support rail 20 so that it can move horizontally and circularly on the steel tower 50 along the safety support rail 20.

A number of safety support rails (20) are installed along the vertical and longitudinal directions of the steel tower (50), but each safety support rail (20) is installed horizontally to each other, and the worker attaches the safety support rail (20) to his/her upper safety support rail (20). The worker can attach the hook 41 of the safety vest 40 to the device 10 and at the same time stand on the safety support rail 20 located below the worker. It is preferable that they are arranged up and down at an interval that allows them to reach the safety ring 135 of the safety work tool 10 when the hand is extended while standing.

Therefore, the safety support rail 20 functions to connect and install the safety work equipment 10 to ensure the safety of the worker, and at the same time performs the function of a support member on which the worker can step.

The tow hook 30 is installed on the column frame of the steel tower 50 at a predetermined distance above the safety support rail 20, and is formed to extend and protrude in the horizontal direction from the column frame like the rail connecting bar 22, and has a plurality of tow hooks ( 30) may have a shape corresponding to the safety support rail 20 while forming an annular shape at a predetermined interval.

The towing ring 30 is arranged so that the ring portion faces the upper part of the safety support rail 20, and is attached to the column frame by installing a straight bar connecting the ring portion and the column frame. Therefore, the ring of the towing ring 30 The portion may be provided to face the upper side of the fall prevention unit 100.

The ring portion of the tow hook 30 is a circular or polygonal ring shape with a hole formed laterally, but an opening 31 may be formed toward the front, and the opening 31 is formed in the tow rope 200. It functions as an entrance that allows access into and out of the towing hook (30).

The tow hook 30 must correspond to the safety support rail 20 and be connected to the safety work tool 10 mounted on the safety support rail 20, and therefore, each angle provided along the vertical direction of the tower 50 The safety support rail 20 has a plurality of tow hooks 30 installed in a ring shape on its upper side.

The safety work device 10 has the shape of a hexahedral case 110 and is connected to a fall prevention unit 100 installed to accommodate the safety support rail 20 and a tow hook 30 on the upper surface of the fall prevention unit 100. It may be configured to include a tow bar 300 and a tow rope 200 that is installed in a ring shape and surrounds the steel tower 50 with a plurality of tow hooks 30 and is coupled to the tow bar 300. .

The safety work mechanism 10 includes a safety support rail (20) as the fall prevention unit 100 accommodates the safety support rail (20) and the tow rope (200) and the tow bar (300) are connected to the tow hook (30). It can move in the horizontal direction along the 20) and tow hook 30.

In addition, since the work is performed with the fall prevention unit 100 tied to the worker's safety vest 40, the worker is ultimately supported on the steel tower 50 to which the safety support rail 20 and the tow hook 30 are attached. This allows you to work safely at high altitudes.

The tow bar 300 is a rod or bar shape with a predetermined diameter and length and has a shape bent at a predetermined point. One end of the tow bar 300 is attached to the upper surface of the case 110 and is attached to the tow bar 300. One side is provided to be upright, and one side of the upright tow bar 300 is bent toward the tow hook 30 at a predetermined point, and then the tip of the other side is located inside the tow hook 30 and can be extended to be inserted.

At this time, as a preferred embodiment of the tow bar 300, the inner angle formed by one side and the other side based on the bending point can be formed at an acute angle, so that the other end of the tow bar 300 inserted into the tow ring 30 is a tow ring ( 30), it can be mounted in an inclined form from the outer upper part to the inner lower part, thereby preventing the other end of the tow bar 300 from being separated from the front and outside of the tow hook 30, and the side of the tow hook 30. The tow bar 300 can move in and out smoothly in any direction.

The other end of the tow bar 300 may be provided with a tow hole 310 formed in the same horizontal direction as the installation direction of the safety support rail 20 or the tow rope 200.

The tow rope 200 is a single rope that penetrates the tow hole 310 and is fitted to the tow bar 300 to connect the tow rope 200 and the tow bar 300. The tow rope 200 is connected to the tow bar 300. It is connected to (300) and can be provided to surround the outer peripheral surface of the steel tower (50) in a ring shape while hanging on the inside of the tow hook (30).

At this time, the tow rope 200 and the tow bar 300 are formed as one piece, so when the tow rope 200 is pulled, the tow bar 300 and the fall prevention unit 100 attached to the tow bar 300 move together.

In other words, the towing rope 200 does not move separately while passing through the towing hole 310, but the towing rope 200 and the towing hole 310 form a bound state and the towing rope 200 and the towing bar 300 It is a structure that moves together, and for this purpose, the tip of the tow bar 300 will be provided with a binding member (not shown) of a combination of bolts and nuts that penetrates the tow hole 310 vertically from top to bottom and is fastened to the tow bar 300. You can.

As described above, the towing rope (200) is installed in a state that surrounds the steel tower (50) and is seated inside the towing ring (30), and the towing bar (300) fitted to the towing rope (200) is attached to the towing rope (200). Since the towing hook 30 and the fall prevention unit 100 are installed in a state connected to the case 110, the fall prevention unit 100 is located on one side of the safety support rail 20, and the worker is placed on the safety support on the other side. If it is located on the other side of the rail (20), there is no need for the worker to step on the safety support rail (20), hold on to the steel tower (50), and move to the place where the fall prevention unit (100) is located, without risking the safety support rail (20). After determining the work position on the other side of 20), when the tow rope (200) located above the worker is pulled, the tow bar (300) is pulled, and the fall prevention unit (100) connected to the tow bar (300) moves together. do.

As a result, the worker does not care about where the fall prevention unit 100 is on the safety support rail 20, but moves to the working position of the steel tower 50 by climbing the ladder and pulling the towing rope 200 at the working point. Safety measures can be completed by moving and arranging the fall prevention unit 100 and connecting it with the worker's safety vest 40.

A safety wire (134) is wound around the fall prevention unit (100), and a safety ring (135) is provided at the tip of the safety wire (134) to connect the ring mounting hook (41) of the safety vest (40) worn by the worker. It can be connected, and as a result, the worker can connect to the fall prevention unit 100 from the high-altitude steel tower 50, prevent a fall and safely move horizontally while relying on the safety support rail 20.

In addition, the fall prevention unit 100 can smoothly unwind and wind the wound safety wire 134 as long as it is maintained within a predetermined angle while combined with the safety support rail 20, while the fall prevention unit ( If 100) is tilted beyond a predetermined angle to the safety support rail 20, the loosening of the safety wire 134 is blocked, thereby performing a safety function to prevent the worker from falling.

To this end, the fall prevention unit 100 may be configured to include a case 110, a control unit 120, and a rotating unit 130.

Case 110 may have a hexahedral shape to accommodate one side of the safety support rail 20 inside.

The receiving part 111 is an internal space of the case 110 and provides an integrated space in which the safety support rail 20, the control part 120, and the rotating part 130 are accommodated. The upper part of the safety support rail 20 And forming a structure that surrounds the side to a position adjacent to the bottom of the groove inclined surface 212, and a space of a corresponding shape is formed below the safety support rail 20 to accommodate the control unit 120 and the rotation unit 130. It can be formed as follows.

At this time, the inner peripheral surface of the space accommodating the safety support rail 20 of the receiving portion 111, excluding the open surface of the portion facing the rail groove 21, is a rail receiving surface 112 forming a circular cross-section. This is configured, since the fall prevention unit 100 of the present invention must be able to rotate the case 110 while in contact with the safety support rail 20, there are multiple locations at multiple points on the inner peripheral surface of the rail receiving surface 112. Bearings 114 may be provided, and each bearing 114 is partially embedded in the rail receiving surface 112 and protrudes toward the safety support rail 20 to rotate and support while contacting the safety support rail 20. It can perform its function. In this case, each bearing 114 may preferably be configured as a sphere of the same size.

The case 110 is coupled while accommodating the safety support rail 20, and must move horizontally without obstruction on the safety support rail 20. The rail connecting the column frame of the steel tower 50 and the safety support rail 20 Since the connecting bar 22 is installed, the connecting bar receiving tool 113 can be configured to move without being caught in the rail connecting bar 22.

The connecting bar receiving tool 113 is an opening formed on one side of the case 110, is formed with a width that can accommodate the rail connecting bar 22, and is connected to one side of the rail receiving surface 112.

Therefore, the rail connecting bar 22 is coupled to the case 110 through the connecting bar receiving device 113, and the safety support rail 20 attached to the tip of the rail connecting bar 22 is connected to the distal end of the connecting bar receiving device 113. It is accommodated in the rail receiving surface 112.

The connecting bar receiving device 113 may be characterized by a passing surface 113a in contact with the rail receiving surface 112 and a passing surface 113b formed on one outer surface of the case 110. In a preferred embodiment of the present invention, The through surface (113b) is formed wider than the through surface (113a), so that the connecting bar receiving tool 113 can be constructed in a shape that spreads widely from the inner through surface (113a) to the outer through surface (113b).

This means that when performing normal work, the worker can bend and unfold the body back and forth within a certain angle range, and accordingly, the fall prevention unit 100 can be tilted at a predetermined angle with the safety support rail 20. In this case, the fall prevention unit ( 100) Within this normal angle range, free space can be provided to allow smooth movement up and down.

If the passing surface (113b) does not have a trapezoidal cross-sectional shape that is wider than the passing surface (113a), even if the fall prevention unit (100) is slightly tilted, the unwinding of the safety wire (134) will stop and the worker's movement will be restricted, causing inconvenience at work. This can cause problems and become a factor that reduces work efficiency.

Meanwhile, in a more preferred embodiment of the present invention, the passing surface 113b is formed wider than the passing surface 113a, and the upper spreading angle relative to the center line penetrating the connecting bar receiving tool 113 in the longitudinal direction is lower than the lower passing surface 113b. It can be formed to be large compared to the spread angle.

That is, the angle of the connecting bar receiving device 113 spreading upward relative to the rail connecting bar 22 is formed to be larger than the angle spreading downward, so that the upper space is relatively high and wide, and the lower space is relatively low and narrow. can be formed.

Ultimately, the distance (D1) from the passing surface (113b) to the top of the rail connection bar (22) is formed longer than the distance to the bottom (D2), and the overall cross-sectional area of the connection bar receiving device (113) is the rail connection bar. Based on (22), the upper area (W1) can be formed to be wider than the lower area (W2).

In this case, as described above, rotation of the fall prevention unit 100 within a predetermined angle range is permitted during the worker's normal work, thereby facilitating work. However, when rotating beyond the predetermined angle, the fall prevention unit 100 is connected to the safety wire. It prevents the fall by preventing the loosening of (134), which can have the effect of immediately preventing the worker from falling.

In general, when a worker slips and falls while working on the safety support rail (20), the body falls backward toward the outside of the tower (50) rather than falling forward toward the tower (50). There is a high probability that this will happen, and during normal work, work is more frequently done by leaning forward while looking at the steel tower (50) rather than working by leaning the body back. Therefore, if the connecting bar receiving device (113) is wide on the upper side and narrow on the lower side, normal work is possible. By increasing the allowable work range as much as possible to avoid interfering with work, in the event of a backward fall, the rotation angle of the fall prevention unit (100) is small, so it immediately prevents the safety wire (134) from loosening and prevents the worker from falling. can be prevented.

Meanwhile, in another embodiment of the present invention, the connecting bar receiving device 113 has a passing surface (113b) wider than the passing surface (113a), but the angle spreading upward and downward with respect to the rail connecting bar 22 is downward. They are formed in the same manner, but the rail connecting bar 22 may be mounted so as to be eccentrically disposed and biased toward the lower bar of the connecting bar receiving device 113.

When the rail connection bar (22) is eccentrically arranged, the distance from the rail connection bar (22) to the top of the connection bar accommodation (113) is longer than the distance from the rail connection bar (22) to the bottom of the connection bar accommodation (113), causing a fall. When the fall prevention unit 100 is tilted forward, a relatively wide range of angles can be allowed, whereas when the fall prevention unit 100 is tilted backward, only a relatively narrow range of angles can be allowed, and the work of the present invention described above In the embodiment, the same effect can be achieved when the upper and lower diffusion angles of the connection bar receiving device 113 are set differently.

When the case 110 is tilted and the angle between the control unit 120 and the safety support rail 20 changes, the control unit 120 is pressed against the safety support rail 20 and the safety wire 134 is wound. It functions to force the operation of the rotating part 130 to stop.

For this purpose, the control unit 120 may be configured to include a control trigger 121, a trigger spring 122, a spring fixing protrusion 123, and a trigger tooth 124.

The control trigger 121 is a straight bar type and is formed to face the rail groove 21 at the top and the rotating part 130 at the bottom. The top of the control trigger 121 protrudes in a gently curved surface. It can be.

At this time, in one embodiment of the present invention, the rail groove 21 may have a bent shape, so when the case 110 is tilted, the groove inclined surface 212 angled in a plane touches the top of the curved control trigger 121 to exert pressure. As the pressing force is applied, the control trigger 121 is lowered by the trigger spring 122 and the spring fixing protrusion 123, which will be described later, and when the case 100 is restored to its original upright position, the control trigger 121 is lowered. As it moves inside the rail groove 21, the groove inclined surface 212 no longer presses the control trigger 121, so the control trigger 121 can be raised to its original position by the elastic restoring force of the trigger spring 122. .

A plurality of control triggers 121 are formed at both inner ends of the receiving part 111. The area of the receiving part 111 where each control trigger 121 is provided is formed in a narrow passage shape according to the shape of the control trigger 121, so that the control trigger 121 is controlled. The trigger 121 may be provided along the vertical passage of the receiving portion 111.

The trigger spring 122 is a compression spring that is coupled to surround the outer peripheral surface of a predetermined central section of the control trigger 121, and the spring fixing protrusions 123 are at least two on the inner peripheral surface of the receiving portion 111 opposite the trigger spring 122. It is equipped with the above to function to fix the trigger spring 122, and the trigger tooth 124 is formed in a sawtooth shape at the bottom of the control trigger 121 and has the function of being coupled to the braking disk 131 of the rotating part 130. can do.

With the above-described structure, the control trigger 121 is attached to the trigger spring 122 and fixed to both sides of the receiving portion 111. The trigger spring 122 is fixedly coupled to the spring fixing protrusion 123. Ultimately, the control trigger 121 can be moved up and down according to the elastic range of the trigger spring 122.

The rotating unit 130 is located below the control unit 120, and the safety wire 134 connected to the safety vest 40 worn by the worker can be wound and rotated, and the control trigger 121 is operated to descend. When engaged with the control trigger 121, the rotation is limited and can function to stop the unwinding of the safety wire 134.

For this purpose, the rotating unit 130 may be configured to include a braking disk 131 and a rotating shaft 133.

The braking disk 131 is located opposite to the lower part of the control trigger 121, can be connected to both sides and rotates around the rotation axis 133, and is provided in plurality at both ends of the receiving portion 111.

The braking disc 131 has a circular plate shape, has a diameter that can be accommodated in the receiving part 111, and has a thickness that is wider than the width of the control trigger 121, and the inner end of the receiving part 111 where the control trigger 121 is accommodated. It may be a size corresponding to .

Braking teeth 132 are formed on the outer peripheral surface of the control disk. The spacing and width of the braking teeth 132 can correspond to the spacing and width of the trigger teeth 124, so when the control trigger 121 descends, the trigger teeth ( 124) can block the rotation of the control disk by engaging the brake teeth 132.

The rotation axis 133 is a horizontal axis connecting a plurality of braking discs 131. The braking discs 131 are disposed on both sides of the receiving part 111, and both side ends are coupled to the inner surface of the receiving part 111 to rotate in place. It is provided so that the safety wire 134 can be wound while being fixedly coupled to the center of the rotation axis 133. At this time, one end of the safety wire 134 is coupled to the rotating shaft 133, and after being wound, a safety ring 135 may be provided at the tip, and the case is installed so that the safety ring 135 is exposed to the outside of the case 110. (110) A through hole for exposing the safety ring 135 may be formed on one side.

In one embodiment, the rotating shaft 133 is mounted as a winding device and can be automatically wound. When the safety wire 134 is pulled to the outside of the case 110, the rotating shaft 133 rotates in one direction and the safety wire 134 is connected to the rotating shaft. It can be released from (133) and extended to the outside of the case (110), and when the force pulling the safety wire (134) is released, the rotation axis (133) rotates in the other direction from its original position, and the safety wire (134) is rotated along the rotation axis (133). It can be wound on.

Based on the above-described structure, an example of use of the fall prevention device 1, which allows free horizontal movement of a steel tower according to a preferred embodiment of the present invention, will be described as follows.

Assume that a worker climbs a steel tower 50, such as a power transmission tower, and performs high-altitude work.

Workers must wear a safety vest (40) and climb the steel tower (50) to move to a high location. The safety vest (40) is generally a swing-type safety vest (40) with a D ring attached to the back. A fixing hook 42 is coupled to the de-ring as a carabiner, one end of the tightening line 43 is connected to the fixing hook 42, and the other end of the tightening line 43 is coupled to the fall prevention unit 100 of the pylon 50. A loop-mounted hook 41 may be provided, and the above-described safety vest 40 has a general configuration.

The worker climbs a ladder or the like and moves to a predetermined position on the steel tower 50 where work is required.

On the steel tower 50, safety support rails 20 are installed in a ring shape by the rail connection bar 22 of the column frame, forming a plurality of stages along the vertical and longitudinal directions, and the upper side of each safety support rail 20 is predetermined. On the street, tow hooks (30) opposing the corresponding safety support rails (20) form a ring shape and are installed at multiple points.

And it is equipped with a safety work device (10) connected to the safety support rail (20) and the tow hook (30). The fall prevention unit (100) accommodates the safety support rail (20) and the rail connecting bar (22). It is provided in the form of a tow bar (300) with one end connected to a tow rope (200) stretched over a tow hook (30) installed in a ring shape at multiple points and the other end connected to the fall prevention unit (100).

Ultimately, the tow hook 30 and the safety support rail 20 are arranged vertically, and the safety work device 10 is connected to the tow hook 30 with a tow rope 200 and a tow bar 300, and the safety support rail A fall prevention unit 100 is connected to (20).

The worker (H) must move to the target location where work is required and then connect the ring-mounted hook 41 to the fall prevention unit 100. At this time, the fall prevention unit 100 may be installed at a location away from the worker's position.

In order to connect the safety vest 40 to the fall prevention unit 100, the worker stands on the safety support rail 20 located below the worker and supports it on the safety support rail 20 located above the worker. The tow rope 200 connected to the combined fall prevention unit 100 and the tow bar 300 is pulled so that the tow bar 300 and the fall prevention unit 100 attached thereto can be moved to the worker's position.

When the fall prevention unit 100 moves to the worker's position, the hook attachment hook 41 of the safety vest 40 is hung on the safety ring 135 of the fall prevention unit 100 to connect the safety vest 40 and the fall prevention unit 100. ), the safety support rails 20 are interconnected to ensure a safe state.

Now, the worker (H) is coupled to the safety support rail (20) as the tension line (330) connects the safety vest (40) and the fall prevention unit (100), and the worker (H) moves horizontally. If so, the fall prevention unit 100 can be moved by being dragged by the ring-mounted hook 41 and the tension line 330, so that work such as smooth horizontal movement and maintenance can be performed.

When the worker (H) carries out work in a normal state, the fall prevention unit 100 can be maintained in a vertical state or coupled to the safety support rail 20 at an angle similar to the vertical, preferably at 85 to 70 degrees in the vertical state. It can be set to allow tilt up to a range of degrees, and the angle range can be determined by the angle of the groove slope 212 of the rail groove 21.

Within the above angle range, even if the worker (H) leans forward to work, the control unit 120 does not operate, and the safety wire 134 is unwound from the rotation axis 133 and extended in length, thereby preventing the fall prevention unit 100 and the worker. Even if you are separated, you can perform tasks smoothly without any problems.

During the normal operation, the control trigger 121 inside the case 110 is accommodated in the rail groove 21 and is in close contact with the groove upper surface 211 and the groove inclined surface 212 with a slight difference, and is within a predetermined range. Even if the case 110 is tilted, the groove inclined surface 212 does not contact the top of the control trigger 121, so pressing the control trigger 121 does not occur.

Therefore, the control trigger 121 maintains its current position, and the braking disc 131 rotates freely without being coupled to the braking disc 131 at the bottom of the control trigger 121, and the safety wire 134 is unwound and wound. This is done smoothly to support safe work for workers.

In addition, the angle formed by the connecting bar receiving device 113 and the rail connecting bar 22 does not reach the angle that presses the control trigger 121, so the worker can safely and smoothly work within the normal angle range.

Now, assuming that the worker (H) loses his balance, such as by tripping, and falls from the steel tower (50), as the worker descends to the side of the tower (50), the tension line (330) becomes taut, and the safety connected to the hook (41) is connected to the hook (41). As the ring 135 is pulled, the safety wire 134 is pulled, and at the same time, the case 110 is tilted in the direction of the worker's departure due to the pulling of the safety wire 134.

In this case, the safety support rail 20 is fixed to the steel tower 50 and only the fall prevention unit 100 is tilted while coupled to the safety support rail 20, so the control unit mounted inside the case 110 ( 120) can also be tilted. When the case 110 is tilted, the control trigger 121 is also tilted in the side direction. At this time, the control trigger 121, which was accommodated in a non-contact state within the rail groove 21, is tilted together with the case 110. It contacts and is pressed against the groove slope 212.

To elaborate on this, the upper end of the control trigger 121 is protruding with a gently curved surface, and the rail groove 21 is in a bent shape, and the upper end of the control trigger 121 is received in the rail groove 21. Since it is in a close contact state, even if the case 110 is tilted, the top of the control trigger 121 has a gently curved surface that rotates in place within the rail groove 21 and is adjusted to a predetermined angle according to the inclination angle of the groove inclined surface 212. It maintains a state of not contacting the rail groove 21 up to the angle. When the inclination of the case 110 exceeds a predetermined angle, the control trigger 121 touches the groove inclined surface 212 and the safety support rail ( 20) and is pressed down.

At this time, the groove inclined surface 212 and the control trigger 121 do not contact and stop, but the groove inclined surface 212 slides along the upper curved surface of the control trigger 121, and the greater the inclination of the case 110, the more the control trigger 121 ) The upper end is pressed as it approaches the corner of the rail groove 21, allowing the braking disc 131 to be lowered deeply.

To elaborate, the control trigger 121 is coupled to the trigger spring 122 fixed within the receiving portion 111, so as it contacts and is pressed against the groove inclined surface 212, it is pushed downward by the elasticity of the trigger spring 122. and moves.

The control trigger 121 has a trigger tooth 124 formed at the bottom and is closely placed opposite the braking disk 131, so when the control trigger 121 is pressed and moves downward, the trigger tooth 124 As it descends, it engages with the brake teeth 132 of the brake disc 131.

Since the top of the control trigger 121 is in contact with the rail groove 21 of the safety support rail 20 and is strongly pressed, the lower trigger tooth 124 of the control trigger 121 is the brake tooth 132. ), it is possible to block the rotation of the brake disc 131 while maintaining a strong stop state.

Since the braking disk 131 is integrated with the rotating shaft 133, when the braking disk 131 is engaged with the control trigger 121 and comes to a stop state, the rotating shaft 133 stops rotating and the loosening of the safety wire 134 also stops. It stops, and thus the worker stops descending while connected to the safety wire 134 and the safety ring 135, which no longer extend, and prevents a fall.

The worker (H) whose descent is stopped in this way can avoid the risk of a safety accident by waiting for help from support personnel or by approaching the steel tower (50) on his own. When the worker (H) eliminates similar risks such as falling and returns to a normal state, the case 110 can be restored to a vertical state with the safety support rail 20, and accordingly, the top of the braking disc 131 is grooved on the inclined surface 212. As the control trigger 121 rises due to the elasticity of the trigger spring 122, the coupling state between the control trigger 121 and the braking disk 131 is released and the rotation shaft 133 is again Normal rotation can occur.

At this time, the tilted fall prevention unit 100 was in a state where the edge of the rail groove 21 and the upper curved surface of the control trigger 121 were unstablely coupled inside the case 110, so the safety wire 134 was pulled strongly. When the force tilting the case 110 is released, the upper curved surface of the control trigger 121 slides into the rail groove 21, so it can be easily restored to its original state. That is, the fall prevention unit 100 can be positioned perpendicular to the safety support rail 20, which is its original mounting form.

Meanwhile, in another embodiment of the present invention, the safety support rail 20 may be formed to have an oval cross-section, and the rail concave portion 21 may also be formed as a groove with an oval curved surface. In this case, both side ends of the rail groove portion 21 are extended and connected to the groove inner end 213, and the groove inner end 213 is the groove outer end 214, which is an oval-shaped outer edge portion of the safety support rail 20. ) is connected. At this time, the groove inner end 213 is a gently curved surface inclined at a predetermined angle toward the top of the control trigger 121 and is formed with a small curvature, and the groove outer end 214 is a sharply curved surface protruding in the horizontal direction. It can be formed with a large curvature.

Due to the above-described structure, other embodiments of the present invention, like the one embodiment, are tilted due to a worker falling, etc., when the fall prevention unit 100 is tilted, the position of the control trigger 121 rotates to the side and the rail groove 21 ) The upper end of the control trigger 121 accommodated in is pressed while in contact with the groove inner end 213, which is a corner of the rail groove 21, so that the control trigger 121 is pressed and can move downward.

In addition, in another embodiment of the present invention, when the case 110 is tilted sharply, the upper end of the control trigger 121 moves beyond the groove inner end 213 and the safety support rail 20 is formed outside the rail groove 21. ) is pushed and contacted to both side ends, and since the safety support rail 20 is oval in shape, when viewed from a side cross-section, the groove outer end 214 has a shape that extends downward and is a curved surface that protrudes with a large curvature, so the case 110 As the control trigger 121 is in contact with the outside of the safety support rail 20, it is in contact with the outside of the safety support rail 20, and as it approaches the groove outer end 214, it receives much stronger pressure than when it is pressed against the groove inner end 213, and the relative It is pushed deeper into the braking disc 131.

Another embodiment of the present invention described above is shown in FIG. 5. As shown in (a) of FIG. 5, in the case of relatively light pressure, the control trigger 121 contacts the groove inner end 213 and causes relative pressure. While descending low, the section where the trigger tooth 124 and the brake tooth 132 overlap can be as long as L1, so a weak braking force is applied. Conversely, in the case of relatively strong pressure, the case 110 is greatly tilted and the control trigger ( 121) is lowered relatively deeply as it contacts the outer end of the groove 214, so that the section where the trigger tooth 124 and the brake tooth 132 overlap can be as long as L2, allowing a strong braking force to be applied.

Therefore, if the worker slightly slips at a slight level, the tilt of the fall prevention unit 100 is small, so the case 110 rotates in a small angle range, and the control trigger 121 is accordingly positioned at the inner end of the groove 213. When pressed, a relatively low depth downward movement occurs, and the combined intersection depth (L1 in Figure 5 (a)) of the trigger tooth 124 and the brake tooth 132 can be made small accordingly. In other words, relatively weak braking force may occur.

Conversely, if the worker falls strongly due to a large impact, the fall prevention unit 100 is tilted at a large angle and the case 110 is tilted severely. At this time, the control trigger 121 is also tilted at a large angle with the safety support rail 20. As it is misaligned, it is pushed past the groove inner end (213) and to the groove outer end (214), and is relatively deeply and strongly compressed, causing a deep descent in the direction of the braking disc (131). And the trigger teeth 124 and brake teeth 132 intersect relatively deeply (L2 in Figure 5 (b)), thereby widening the contact area. That is, as the control trigger 121 and the braking gear 132 are strongly coupled, the supporting force increases and a strong braking force can be generated.

In summary, when a worker accidentally falls while working on the steel tower 50, the control trigger 121 is lowered as the fall prevention unit 100 is tilted, and the brake gear 132 is lowered as described above. It is possible to forcibly stop the rotation of the brake disc 131 by engaging with it, and this allows the safety wire while the tightening line 330 of the worker's safety vest 40 is caught on the safety ring 135 of the fall prevention unit 100. By stopping the loosening of (134), it is possible to prevent the worker from continuing to fall and provide a way to move to a safe place or be rescued by a third party.

In another embodiment of the present invention, a plurality of bearings 114 formed on the inner peripheral surface of the rail receiving surface 112 may be configured with different sizes, which means that the cross section of the rail receiving surface 112 is circular, while the safety support rail ( 20) is oval-shaped, and in order for the case 110 to rotate while accommodating the oval-shaped safety support rail 20, the rail receiving surface 112 must have a circular cross-section with a diameter corresponding to the widest width of the safety support rail 20. This is because, when the fall prevention unit 100 is in a vertical state, the separation distance between the safety support rail 20 and the rail receiving surface 112 is relative to the rail receiving surface 112 in contact with the upper part of the safety support rail 20. Therefore, it is desirable to install a relatively large bearing 114 compared to the bearing 114 disposed on the side of the safety support rail 20.

The embodiments of the present invention described above are merely illustrative, and those skilled in the art will understand that various modifications and other equivalent embodiments are possible.

Therefore, it will be understood that the present invention is not limited to the forms mentioned in the detailed description above. Therefore, the true scope of technical protection of the present invention should be determined by the technical spirit of the attached patent claims.

In addition, the present invention should be understood to include all modifications, equivalents and substitutes within the spirit and scope of the present invention as defined by the appended claims.

1: Fall prevention device with free horizontal movement of the steel tower
10: Safety work equipment
100: Fall prevention unit
110: case
111: receiving part
113: Connection bar accommodation tool
113a: Passing one side
113b: If you pass through
114: bearing
115: Rail receiving surface
120: control unit
121: Control trigger
122: Trigger spring
123: Spring fixing protrusion
124: Trigger tooth
130: rotating part
131: Braking disc
132: Brake teeth
133: rotation axis
134: safety wire
135: Safety ring
200: Tow rope
300: tow bar
310: Tow ball
20: Safety support rail
21: Rail groove part
211: Groove upper surface
212: groove slope
213: groove inner edge
214: Groove outer edge
22: Rail connection bar
30: tow hook
31: opening
40: Safety vest
41: Ring mounting hook
42: fixed hook
43: tightening rope
50: Pylon

Claims (5)

Safety support rails installed horizontally around the outer circumference of the steel tower;
A plurality of towing hooks installed on the steel tower pillar frame at a predetermined distance above the safety support rail and having openings facing forward;
A safety work device that accommodates the safety support rail and is installed to be connected to the towing hook, can move horizontally along the safety support rail, and is connected to the worker's safety vest and safety wire;
The safety support rail is,
Rail connecting bars perpendicular to the longitudinal direction and connected to the steel tower column frame horizontally with the ground; and
It further includes a rail concave portion recessed to a predetermined depth along the lower longitudinal direction,
Safe work equipment,
A fall prevention unit that accommodates the safety support rail and limits the loosening of the safety wire connected to the safety vest when the worker falls;
A tow rope that penetrates the inside of the tow hook and is provided to surround the steel tower in a ring shape; and
It includes a tow bar that is bent to connect the upper surface of the fall prevention unit and the inside of the tow hook through the opening, and has a tow rope inserted into the tow hole formed at the tip in a horizontal direction,
The fall prevention unit is
case;
An accommodating portion formed as an inner space of the case to accommodate a support rail at the upper portion and a control portion and a rotating portion at the lower portion of the safety support rail;
A rail receiving surface forming a circular cross-section corresponding to the safety support rail as a space for receiving the support rail at the upper part of the receiving portion; and
It further includes; a connecting bar receiving device having an opening formed from one side of the rail receiving surface to one side of the case with a width capable of accommodating the rail connecting bar;
A fall prevention device that allows free horizontal movement of the steel tower. delete According to paragraph 1,
The fall prevention unit is
A control unit that controls the operation of the rotating part by raising and lowering the control trigger; and
It is located at the bottom of the control unit, and the safety wire connected to the safety vest is wound and rotates, and when the control trigger is lowered, it engages with the control trigger and includes a rotating part whose rotation is limited,
The control department,
A bar-shaped control trigger is formed at both inner ends of the receiving portion, is accommodated in close contact with the rail groove at the upper part, faces the rotating part at the lower part, and is pressed and raised and lowered by the support rail according to the inclination of the case;
A trigger spring that surrounds and is coupled to the outer peripheral surface of the control trigger;
A spring fixing protrusion that secures the trigger spring to the inner peripheral surface of the receiving portion; and
It further includes a trigger tooth protruding from the lower part of the control trigger,
The rotating part,
A plurality of braking discs located below the control trigger and having braking teeth formed on the outer peripheral surface; and
It further includes a horizontal axis connecting the braking discs, with a safety wire wrapped around the center and a rotating axis coupled to the inner surface of the receiving portion at both side ends.
A fall prevention device that allows free horizontal movement of the steel tower. According to paragraph 1,
The connection bar receiving tool is,
A pass-through surface in contact with the rail receiving surface; and
It further includes a passing surface formed on the outer surface of the case,
The passing surface is formed wider than the passing surface, and the connecting bar receiving device is configured in a shape that spreads from the inside to the outside.
A fall prevention device that allows free horizontal movement of the steel tower. According to paragraph 1,
The rail connection bar is arranged eccentrically toward the bottom of the connection bar accommodation,
Characterized in that the distance between the upper end of the connecting bar receiving device and the rail connecting bar is longer than the distance between the lower end of the connecting bar receiving device and the rail connecting bar,
A fall prevention device that allows free horizontal movement of the steel tower.