KR20240055605A - L-Shaped Bolt Fastening Structure Using Hole Guard - Google Patents

Abstract

An L-type bolt fastening structure using a hole guard that can be mounted on holes of various sizes is disclosed. Since the L-type bolt is fastened with the hole guard mounted on the lower structure, it is possible to fasten using the L-type bolt to steel pads with large holes or long holes, or gratings where the holes are damaged and the size of the hole is not constant. . In addition, since it is possible to install bolts from one direction for holes of various sizes using hole guards and L-type bolts, it can be widely used for not only floor areas in industrial sites, but also H-beam structures at construction sites, and hook hangers on ceilings or wall structures. .

Description

L-Shaped Bolt Fastening Structure Using Hole Guard}

The present invention relates to a bolt fastening structure, and more specifically, to an L-type bolt fastening structure using a hole guard that can be mounted on holes of various sizes.

Generally, in production facilities, equipment is fixed and installed on a lower structure such as a grating plate. Usually, the grating plate is installed at a certain height from the ground, and piping and wiring are installed under the grating plate. In order to form a shelf-like shape, a number of grating plates are arranged at a predetermined height, and the height is approximately 4 m to 10 m. Production equipment is fixed and installed on the grating plate installed in this way. Fixed installation is done in the usual way by fastening the equipment and the grating plate using brackets. However, it is difficult to fix the equipment to the grating plate using a bracket without changing the position of the grating plate on which the equipment is fixed. As described above, since the grating plate is installed at a predetermined height in the form of a shelf, another worker must individually assist in tightening fasteners such as bolts/nuts under the grating plate. Therefore, it takes a lot of time and poses a risk to workers under the grating plate.

Meanwhile, when lifting part of a grating plate installed in the form of a shelf as shown above at a production site, serious safety accidents such as workers falling are occurring.

In addition, the holes in the grating plate where the bolts are fastened may be damaged and the size of the holes may not be constant, or the damaged holes may make it impossible to use fasteners such as bolts/nuts, resulting in the need to replace the grating plate itself.

Meanwhile, in addition to grating plates with holes, the floor of a production site uses various types of support plates, such as grating plates with grid-shaped holes or flat steel pads. The sizes of the holes formed in the grating plate or steel pad with such lattice-shaped holes are not constant, and have a larger size than the holes formed in the grating plate, or have a lattice shape or long hole shape. Therefore, since it is impossible to mount the bolts correspondingly to various holes with the size of a regular bolt, a bolt fastening structure that can be fastened to fit the size of each hole is required.

Korean registered patent 10-0730721

The present invention takes into account the problems of the prior art described above, and is an L-type bolt using a hole guard that can quickly and firmly secure equipment without changing the lower structure such as a grating plate or steel pad with holes of various sizes. Provides a fastening structure.

The L-type bolt fastening structure of the present invention to solve the above problem is located under the equipment of an industrial facility and includes a lower structure with a hole for fastening, a hole guard inserted and fixed into the hole of the lower structure, and a screw thread. It consists of a formed upper vertical part and a lower horizontal part formed by extending from the bottom of the upper vertical part through a bend, and is fastened to the L-shaped bolt in the form of an L-shaped bolt and a ring inserted into the hole guard, wherein the L-shaped bolt is It includes a fall prevention washer supported on the hall guard to prevent falling to the lower part of the lower structure.

The hole guard includes a support part disposed on the upper part of the lower structure, a hole insertion part disposed below the support part and inserted into a hole of the lower structure, and a bolt formed through the support part and the hole insertion part so that the L-shaped bolt is inserted. May include holes.

Two or more hole insertion parts may be disposed below the support part.

The hole insertion portion may have the same shape and size as the hole of the lower structure.

The hole insertion portion may have a cylindrical shape with a predetermined height.

The bolt hole may have a long hole shape so that when the lower horizontal portion of the L-type bolt is inserted into the hole guard, the lower horizontal portion passes through the hole insertion portion.

The hole insertion part may include a first protrusion formed to protrude from one side of the lower surface of the hole insertion part, and a second protrusion formed to protrude from the lower surface of the hole insertion part and spaced apart from the first protrusion.

The first protrusion and the second protrusion may be spaced apart by a thickness of the L-type bolt such that a lower horizontal portion of the L-type bolt is disposed and fixed between the first protrusion and the second protrusion.

The height of the first protrusion may be higher than the height of the second protrusion.

The hole insertion portion may be divided into two sides at the bottom of the support portion.

The hole insertion part may include a first protrusion formed to protrude from one side of the lower surface of the hole insertion part, and a second protrusion formed to protrude from the lower surface of the hole insertion part and spaced apart from the first protrusion.

The hole insertion portion may have a ring shape.

The L-type bolt may further include a locking groove in the form of a groove having a predetermined angle at a bent inner portion of the bent portion.

The fall prevention washer may include a ring-shaped locking portion supported on the upper surface of the hole guard and a coupling hole formed inside the locking portion and into which the L-shaped bolt is inserted.

The L-type bolt may have a protruding shape on a bent outer portion of the bent portion.

The fall prevention washer may further include a mounting groove formed in the engaging portion so that the engaging portion passes through the upright auxiliary portion and is mounted on the upper vertical portion of the L-type bolt.

The locking portion may further include a plurality of cutting portions formed inside the locking portion.

It may further include an insertion part formed at a lower part of the engaging part and inserted into a hole of the lower structure.

The locking portion is formed in a zigzag shape, extends from the locking portion, and may further include an opening portion that expands or reduces the size of the coupling hole by elasticity.

The fall prevention washer is formed by dividing a ring-shaped ring portion having a coupling hole into which the L-type bolt is inserted, a protruding portion protruding from one side of the ring portion, and a split portion from the other side of the ring portion, which is separated by an external force, It may include an opening part whose space is narrowed by elasticity.

According to the present invention, since the L-type bolt is fastened while the hole guard is mounted on the lower structure, the L-type bolt can be used for steel pads with large holes or large long holes or gratings where the holes are damaged and the size of the hole is not constant. Conclusion is possible.

In addition, a protrusion is provided on the lower surface of the hole guard to prevent the L-type bolt from rotating when the L-type bolt is installed, and a locking groove or upright auxiliary part is provided at the bent part of the L-type bolt to ensure that the L-type bolt is erected. The fixing nut can be fastened in this state.

Furthermore, because bolts can be installed from one direction for holes of various sizes using hole guards and L-type bolts, they can be widely used for hook hangers on H-beam structures at construction sites, ceilings, or wall structures, as well as floors in industrial sites. do.

The technical effects of the present invention are not limited to those mentioned above, and other technical effects not mentioned will be clearly understood by those skilled in the art from the description below.

Figure 1 is a diagram showing an L-type bolt fastening structure using the hole guard of the present invention.
Figure 2 is a cross-sectional view showing an L-type bolt fastening structure using the hole guard of the present invention.
Figure 3 is a diagram showing a hole guard according to the first embodiment of the present invention.
Figure 4 is an image showing an L-type bolt mounted on a hole guard according to the first embodiment of the present invention.
Figure 5 is a diagram showing a hole guard according to a second embodiment of the present invention.
Figure 6 is a diagram showing a hole guard according to a third embodiment of the present invention.
Figure 7 is a diagram showing an example in which a hole guard is installed according to a third embodiment of the present invention.
Figure 8 is a diagram showing another example in which a hole guard is mounted according to a third embodiment of the present invention.
Figure 9 is a diagram showing an embodiment of an L-type bolt according to the present invention.
Figure 10 is a diagram showing another embodiment of an L-type bolt according to the present invention.
Figure 11 is a diagram showing a fall prevention washer according to the first embodiment of the present invention.
Figure 12 is a diagram showing a fall prevention washer according to a second embodiment of the present invention.
Figures 13 and 14 are views showing a fall prevention washer according to a third embodiment of the present invention.
Figure 15 is a diagram showing a fall prevention washer according to a fourth embodiment of the present invention.
Figure 16 is a diagram showing an example of use of a fall prevention washer according to a fourth embodiment of the present invention.
Figure 17 is a diagram showing a fall prevention washer according to the fifth embodiment of the present invention.
Figures 18 to 21 are diagrams showing a method of mounting an L-type bolt fastening structure using the hole guard of the present invention.

Since the present invention can be modified in various ways and can have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all transformations, equivalents, and substitutes included in the spirit and technical scope of the present invention. In describing the present invention, if it is determined that a detailed description of related known technologies may obscure the gist of the present invention, the detailed description will be omitted.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings. In the description with reference to the accompanying drawings, identical or corresponding components will be assigned the same drawing numbers and redundant description thereof will be omitted. Do this.

Figure 1 is a diagram showing an L-type bolt fastening structure using the hole guard of the present invention.

Figure 2 is a cross-sectional view showing an L-type bolt fastening structure using the hole guard of the present invention.

Referring to Figures 1 and 2, the L-type bolt fastening structure using the hole guard of the present invention includes a hole guard (100), an L-type bolt (200), a fall prevention washer (300), a buffer pad (400), and a bracket ( 500), an erection auxiliary tool 600, a coupling washer 700, and a fixing nut 800.

First, the hole guard 100 is mounted on the lower structure (G) in which a hole for fastening is formed on the floor under the equipment of an industrial facility, and cannot be mounted using only the L-type bolt 200, for example, a large The steel pad (S) having a hole or a large long hole may be mounted on a grating, etc. where the holes are damaged and the size of the hole is not constant. In other words, for general grating holes, the equipment can be fixed to the grating using only L-type bolts (200), and for large holes, steel pads (S) with large long holes, or gratings where the holes are damaged and the size of the holes is not constant, etc. The hole guard 100 may be first mounted on the lower structure (G), and the L-type bolt 200 may be mounted on the mounted hole guard 100.

Figure 3 is a diagram showing a hole guard according to the first embodiment of the present invention.

Figure 4 is an image showing an L-type bolt mounted on a hole guard according to the first embodiment of the present invention.

Referring to Figures 1 to 4, the hole guard 100 according to the first embodiment of the present invention may include a plate-shaped support part 110 and a hole insertion part 120 disposed below the support part 110. there is. A bolt hole 101 through which the L-type bolt 200 is inserted and mounted may be formed through the support portion 110 and the hole insertion portion 120.

The support portion 110 has a plate shape, may have a square or circular shape, and may have a size larger than the size of the hole formed in the lower structure (G). That is, the support portion 110 may be a portion supported on the upper surface of the lower structure (G).

The hole insertion part 120 is disposed below the support part 110 and can be inserted into the hole of the lower structure (G). The hole insertion portion 120 may have a cylindrical shape with a predetermined height. At this time, the hole insertion portion 120 may have the same shape and size as the size of the hole formed in the lower structure (G). For example, when the hole of the lower structure (G) has a large circular shape, the hole insertion portion 120 may have a circular shape, and when the hole of the lower structure (G) has an oval shape, the hole insertion portion ( 120) may have an oval shape. One or two or more of these hole insertion portions 120 may be disposed below the support portion 110 depending on the equipment fixed on the lower structure (G).

When the hole insertion part 120 is inserted into the hole of the lower structure (G), the hole guard 100 can be supported on the upper surface of the lower structure (G) by the support part 110, so that the hole guard 100 is lower than the lower structure (G). You can prevent falling under the structure (G).

Additionally, when the hole insertion portion 120 has a cylindrical shape with a predetermined height, the bolt hole 101 formed in the hole guard 100 preferably has a long hole shape. This means that when inserting the L-type bolt 200 into the bolt hole 101 of the hole guard 100, the lower horizontal portion 220 of the L-type bolt 200 is a hole insertion portion 120 having a predetermined height. This is to ensure that it passes. For example, in the L-type bolt 200 fastening structure according to the present invention, when the L-type bolt 200 is inserted into the bolt hole 101 of the hole guard 100, the lower horizontal portion 220 of the L-type bolt 200 ) is inserted and installed. Therefore, the bolt hole 101 must have a long hole shape due to the bent shape of the L-type bolt 200 to allow the L-type bolt 200 to pass through the bolt hole 101 without mutual interference.

The lower part of the hole insertion part 120 may include a first protrusion 130 and a second protrusion 140. The first protrusion 130 and the second protrusion 140 are formed to protrude from one side of the lower surface of the hole insertion part 120, and may be formed to be spaced apart from each other at a predetermined interval. In addition, the first protrusion 130 and the second protrusion 140 may have a predetermined height so that the L-type bolt 200 does not rotate when the L-type bolt 200 is mounted on the hole insertion portion 120. there is.

For example, the first protrusion 130 may have a function of preventing the L-type bolt 200 from rotating when the L-type bolt 200 is fastened using the fixing nut 800. That is, when inserting the L-type bolt 200 into the hole guard 100, the lower horizontal portion 220 of the L-type bolt 200 may be disposed at a position in contact with the side surface of the first protrusion 130. At this time, when the fixing nut 800 is rotated clockwise to fasten it to the upper vertical portion 210 of the L-type bolt 200, the L-type bolt 200 is fixed without rotating by the first protrusion 130. can do. Therefore, the worker can quickly and stably fix the fixing nut 800 to the L-type bolt 200 even on the upper part of the lower structure G.

The second protrusion 140 may have a function of preventing the fixed L-type bolt 200 from loosening due to vibration or impact. For example, the L-type bolt 200 fixed to the hole guard 100 may be loosened due to vibration or impact generated from the equipment being transmitted to the lower structure (G). However, since the L-type bolt 200 according to the present invention can block the rotation of the L-type bolt 200 by the second protrusion 140, it prevents the L-type bolt 200 from loosening due to vibration or impact. can do. For example, even when the fixing nut 800 is dismantled, the lower horizontal portion 200 can be fixed by the second protrusion 140, so the worker can secure the lower structure (G) without separately fixing the L-type bolt 200. The fixing nut 800 can be quickly and stably dismantled from the top.

In addition, the second protrusion 140 is formed to be spaced apart from the first protrusion 130, and the distance between the first protrusion 130 and the second protrusion 140 is a distance equal to the thickness of the L-type bolt 200. You can have For example, between the first protrusion 130 and the second protrusion 140 may be a seating area 102 where the L-type bolt 200 is seated and fixed. Therefore, it is desirable that the distance between the first protrusion 130 and the second protrusion 140 be long enough for the L-type bolt 200 to be seated and fixed.

At this time, the second protrusion 140 may have a lower height than the first protrusion 130. This is to minimize interference between the L-type bolt 200 and the second protrusion 140 when the L-type bolt 200 is inserted into the hole guard 100 and positioned at the seating area 102. Therefore, when rotating the L-type bolt 200 in the direction of the first protrusion 130 to seat it on the seating portion 102, the L-type bolt 200 passes through the second protrusion 140 and reaches the seating portion 102. It can be installed quickly.

Figure 5 is a diagram showing a hole guard according to a second embodiment of the present invention.

Referring to FIG. 5, the hole guard 100 according to the second embodiment of the present invention may include a plate-shaped support portion 110 and a hole insertion portion 120 disposed below the support portion 110. Additionally, a bolt hole 101 through which the L-type bolt 200 is inserted and mounted may be formed through the support portion 110 and the hole insertion portion 120.

However, the hole guard 100 according to the second embodiment may have a bolt hole 101 of a size larger than that of the bolt hole 101 of the first embodiment, and the hole insertion portion 120 may have a support portion. It may have a form divided into two sides at the lower part of (110). For example, the hole insertion portion 120 may have the same predetermined height as the first embodiment, but may be divided into two sides.

The hole guard 100 according to the second embodiment can be applied when using an L-type bolt 200 of a size larger than the size of the L-type bolt 200 used in the first embodiment. That is, the hole guard 100 according to the present invention has various sizes of the hole insertion portion 120 and the bolt hole 101 depending on the size of the hole of the lower structure (G) and the size of the L-type bolt 200. It can be applied. Additionally, the hole guard 100 according to the first and second embodiments has a large hole or a large long hole and can be applied to the lower structure G having a predetermined thickness.

Figure 6 is a diagram showing a hole guard according to a third embodiment of the present invention.

Figure 7 is a diagram showing an example in which a hole guard is installed according to a third embodiment of the present invention.

Figure 8 is a diagram showing another example in which a hole guard is mounted according to a third embodiment of the present invention.

Referring to FIGS. 6 to 8, the hole guard 100 according to the third embodiment of the present invention may include a plate-shaped support portion 110 and a hole insertion portion 120 disposed below the support portion 110. there is. Additionally, a bolt hole 101 through which the L-type bolt 200 is inserted and mounted may be formed through the support portion 110 and the hole insertion portion 120.

However, the bolt hole 101 of the hole guard 100 according to the third embodiment may have a circular shape as shown in FIG. 6, and the hole insertion portion 120 may have a ring shape. As an example, the hole guard 100 according to the third embodiment may be mounted on a site where the hole of the grating plate (G) is damaged, as shown in FIG. 7. Additionally, the hole guard 100 according to the third embodiment may be mounted on a grating plate (G) in which holes are in the form of a grid, as shown in FIG. 8 . That is, the hole guard 100 according to the third embodiment can be used as reinforcement for mounting the L-type bolt 200 to a grating plate (G) with damaged holes or a grating plate (G) with holes in a lattice form. You can.

As described above, the L-type bolt fastening structure according to the present invention prevents the steel pad and holes having a large hole or large long hole in the lower structure (G) from being damaged, or the hole guard 100 being used in grating, etc. where the size of the hole is not constant. By using it, the L-type bolt 200 can be safely and easily mounted on the lower structure (G).

Continuing with reference to FIGS. 1 and 2 , when the hole guard 100 is mounted on the lower structure (G), the L-type bolt 200 may be fastened to the mounted hole guard 100.

Figure 9 is a diagram showing an embodiment of an L-type bolt according to the present invention.

Referring to Figures 1, 2 and 9, the L-type bolt 200 according to the present invention has an 'ㄴ' shape and includes an upper vertical part 210, a lower horizontal part 220, and a bent part 230. do. The lower horizontal portion 220 may have a shape extending downward from the upper vertical portion 210 through the bent portion 230 .

The lower horizontal portion 220 may be a portion that is inserted into the bolt hole 101 of the hole guard 100 and is located below the lower structure (G) and is pressed against the lower surface of the hole guard 100 when coupled. The upper vertical part 210 is a part that penetrates the lower structure (G), the bracket 500 placed thereon, and the fastening hole provided by the fastening elements, and has a screw groove formed therein, and a fixing nut 800 is installed in the part. ) are combined.

Additionally, a locking groove 231 in the form of a groove having a predetermined angle may be formed in the bent inner portion of the bent portion 230. For example, the locking groove 231 may have a groove shape on the inside of the bent portion 230 and may be formed to have a predetermined angle in the inner direction.

When the L-type bolt 200 is inserted into the hole guard 100 and fastened with the fixing nut 800 by this locking groove 231, the L-type bolt 200 can be fixed in an upright state. For example, if the inside of the bent portion 230 has a curved shape, the L-shaped bolt 200 cannot be in close contact with the side of the bolt hole 101 of the hole guard 100 due to the inner curved portion. Therefore, when fastening the L-type bolt 200, the L-type bolt 200 is tilted as much as the curved shape or is not fastened firmly. However, the L-type bolt 200 according to the present invention includes a locking groove 231 having a predetermined angle on the inner portion of the bent portion 230, so that the L-type bolt 200 is fastened to the hole guard 100. The locking groove 231 can be fastened in close contact with the side of the bolt hole 101. Accordingly, not only is the coupling of the fixing nut 800 easy and quick, but the correct coupling posture can be achieved even after the fixing nut 800 is completely tightened. This is applicable not only when mounting the L-type bolt 200 to the hole guard 100, but also when coupling the L-type bolt 200 to the lower structure (G).

Figure 10 is a diagram showing another embodiment of an L-type bolt according to the present invention.

Referring to FIGS. 1, 2, and 10, another embodiment of the L-type bolt according to the present invention may include an erection auxiliary portion 232 in the bent portion 230 of the L-type bolt 200.

The erection auxiliary part 232 may be formed on the outer curved surface of the L-type bolt 200. That is, the erection auxiliary part 232 may have a shape that protrudes from the bent outer portion of the bent part 230 of the L-type bolt 200. At this time, it is preferable that the upper surface of the erection auxiliary part 232 is positioned on the same plane as the upper surface of the lower horizontal part 220. That is, the L-type bolt 200 can be made to stand upright by arranging the upper surface of the erection auxiliary part 232 and the upper surface of the lower horizontal part 220 to be in contact with the lower surface of the hole guard 100, respectively.

However, the erect auxiliary part 232 is a hole guard 100 or an erect auxiliary unit ( 232) is applicable to the lower structure (G) having a large hole through which the hole can pass.

As described above, the erection auxiliary portion 232 may function together with the locking groove 231 to allow the L-type bolt 200 to be erected and fastened. That is, the locking groove 231 is in close contact with the bolt hole 101 of the hole guard 100, and the erection auxiliary part 232 is in close contact with the lower surface of the hole guard 100 so that the L-type bolt 200 is in an upright state. It can be fixed in . Therefore, since the fixing nut 800 can be fastened with the L-type bolt 200 in an upright state, the fixing nut 800 can be quickly coupled and fastened and fixed in an upright state.

Continuing with reference to FIGS. 1 and 2 , the fall prevention washer 300 may be inserted into the L-type bolt 200 and mounted on the upper vertical portion 210. That is, the L-type bolt 200 can be inserted into the bolt hole 101 of the hole guard 100 with the fall prevention washer 300 installed, and the fall prevention washer 300 is attached to the hole guard 100. By being arranged to be supported on the upper surface, the L-type bolt 200 can be prevented from falling to the lower part of the lower structure (G).

Figure 11 is a diagram showing a fall prevention washer according to the first embodiment of the present invention.

Referring to FIG. 11, the fall prevention washer 300 according to the first embodiment of the present invention has a ring-shaped locking portion 310 with a coupling hole 301, and a ring-shaped locking portion 310 is formed on the inside of the locking portion 310. It may include a mounting groove 311. Here, the coupling hole 301 may be a hole into which the L-type bolt 200 is inserted, and the engaging portion 310 may be a portion supported on the upper surface of the hole guard 100. Additionally, the mounting groove 311 may be a groove for fastening the fall prevention washer 300 to the L-shaped bolt 200 including the upright auxiliary part 232.

For example, the diameter of the coupling hole 301 of the fall prevention washer 300 must be the same as or smaller than the diameter of the upper vertical portion 210 of the L-type bolt 200. This is to ensure that after inserting the L-type bolt 200 into the fall-prevention washer 300, the fall-prevention washer 300 is fixed to the L-type bolt 200.

At this time, since the upper vertical portion 210 of the L-type bolt 200 has a larger diameter than the unthreaded portion where the thread is formed, the fall-prevention washer 300 must be used to fasten the fall-prevention washer 300 to the L-type bolt 200. (300) must be inserted into the lower horizontal part 220 of the L-type bolt 200 and moved to the position of the upper vertical part 210.

As an example, the fall-prevention washer 300 according to the first embodiment can be used to fasten the fall-prevention washer 300 to the L-type bolt 200 including the upright auxiliary portion 232 shown in FIG. 10. there is. That is, the locking portion 310 of the fall-prevention washer 300 includes the mounting groove 311, so that the fall-prevention washer 300 passes through the upright auxiliary part 232 through the mounting groove 311 to the upper vertical part. (210) It can be moved to the area.

Figure 12 is a diagram showing a fall prevention washer according to a second embodiment of the present invention.

Referring to FIG. 12, the fall-prevention washer 300 according to the second embodiment of the present invention has a ring-shaped locking portion 310 with a coupling hole 301, and has a plurality of locking portions 310 inside the locking portion 310. A cutting portion 312 may be included. At this time, the diameter of the coupling hole 301 of the fall prevention washer 300 may have a smaller size than the diameter of the L-type bolt 200. For example, when moving the fall prevention washer 300 from the lower horizontal part 220 of the L-type bolt 200 toward the upper vertical part 210 in order to fasten it to the L-type bolt 200, the diameter is L-shaped. The fall prevention washer 300, which is smaller than the diameter of the bolt 200, may be fastened to the L-type bolt 200 while the cutting portion 312 is widened. Therefore, when the fall-prevention washer 300 is located on the upper vertical portion 210, the fall-prevention washer 300 can be stably fixed to the L-type bolt 200 by the cutting portion 312.

Figures 13 and 14 are views showing a fall prevention washer according to a third embodiment of the present invention.

Referring to Figures 13 and 14, the fall prevention washer 300 according to the third embodiment of the present invention includes a ring-shaped locking portion 310 having a coupling hole 301 and an insert formed in the lower portion of the locking portion 310. It may include unit 320. For example, when the L-type bolt 200 with the fall-prevention washer 300 fastened is mounted on the hole guard 100, the insertion portion 320 of the fall-prevention washer 300 is inserted into the bolt hole of the hole guard 100 ( 101). More specifically, the locking portion 310 of the fall prevention washer 300 is supported on the upper surface of the hole guard 100, and the insertion portion 320 is inserted into the bolt hole 101 of the hole guard 100. By doing so, it is possible to prevent the L-type bolt 200 from shaking due to clearance within the bolt hole 101. That is, the L-type bolt 200 can be fixed upright within the bolt hole 101. Therefore, the worker can quickly and firmly perform the work when attaching or disassembling the bolt fastening structure to the lower structure (G).

In addition, as shown in FIG. 14, a tab 313 for fastening to the thread of the L-type bolt 200 may be formed on the side where the coupling hole 301 of the fall prevention washer 300 is formed. . That is, the tab 313 may be formed to extend from the inside of the catching portion 310 to the inside of the insertion portion 320.

When the tab 313 is formed in the coupling hole 301, the fall prevention washer 300 can be inserted into and fastened to the upper vertical portion 210 where the thread of the L-type bolt 200 is formed. The fall prevention washer 300, which is fastened to the thread of the L-type bolt 200 using the tab 313, is preferably made of a metal material. Therefore, it is easy to fasten the fall prevention washer 300 with the L-type bolt 200, and the L-type bolt 200 is erected by the insertion portion 320 inserted into the bolt hole 101 of the hole guard 100. It can be done as much as possible. In addition, since the insertion portion 320 inserted into the bolt hole 101 of the hole guard 100 may have a partition function that surrounds and protects the inside of the bolt hole 101, the There is an effect of preventing damage to the bolt hole 101.

Figure 15 is a diagram showing a fall prevention washer according to a fourth embodiment of the present invention.

Figure 16 is a diagram showing an example of use of the fall prevention washer 300 according to the fourth embodiment of the present invention.

Referring to Figures 15 and 16, the fall prevention washer 300 according to the fourth embodiment of the present invention has a ring-shaped ring part 330 with a coupling hole 301, and is provided on both sides of the ring part 330. It may include a formed opening portion 340 and a protruding portion 350.

The opening portion 340 and the protruding portion 350 are formed to extend from the ring portion 330, and may be formed to protrude from both sides of the ring portion 330. At this time, the opening portion 340 may be divided into two sides. For example, the separation portion 340 may be widened or narrowed by applying a predetermined force. That is, the space between the opening portions 340 may be widened by an externally applied force, and may be narrowed again by elasticity when the force is removed. In addition, the coupling hole 301 of the ring part 330 can be enlarged by widening the gap between the ring part 330 and the spread part 340, and by narrowing the distance between the spread parts 340, the coupling hole ( 301) can also be reduced.

Therefore, when the fall prevention washer 300 according to the fourth embodiment is fastened to the L-type bolt 200, the upper vertical portion of the L-type bolt 200 uses the elasticity of the opening portion 340, as shown in FIG. 15. It can be concluded immediately at (210).

In addition, as shown in FIG. 16(a), when the hole formed in the bracket 500 has a long hole shape, the bracket 500 and the lower structure may be damaged due to interference between the bracket 500 and the ring-shaped fall prevention washer 300. A gap may occur between (G). However, the fall prevention washer 300 according to the fourth embodiment of the present invention can be placed in the long hole without interference with the bracket 500 in which the long hole is formed, as shown in FIG. 16(b). That is, the fall prevention washer 300 can be fixed to the L-type bolt 200 by the ring portion 330, and is supported on the upper surface of the hole guard 100 by the opening portion 340 and the protrusion 350. can do. Therefore, the fall prevention washer 300 is easy to install and disassemble, and can also be used on a bracket 500 having a long hole.

Figure 17 is a diagram showing a fall prevention washer according to the fifth embodiment of the present invention.

Referring to FIG. 17, the fall prevention washer 300 according to the fifth embodiment of the present invention has a ring-shaped locking portion 310 with a coupling hole 301, and a ring-shaped locking portion 310 is formed on one side of the locking portion 310. It may include an opening portion 340.

At this time, the locking portion 310 may have a zigzag ring shape. Due to this zigzag shape, the locking portion 310 may have a plurality of protruding portions on the inside. The protruding portion may function to more firmly secure the fall prevention washer 300 to the L-type bolt 200.

Additionally, the opening portion 340 extends from the engaging portion 310 and is formed to protrude to one side. However, the opening portion 340 may be formed by being divided into two sides. However, the opening portion 340 according to the fifth embodiment may be arranged so that the divided portions cross each other. That is, by applying an external force to the intersecting splitting portions 340, the size of the coupling hole 301 can be enlarged or reduced by the elasticity of the splitting portions 340. Therefore, the fall prevention washer 300 according to the fifth embodiment can be fastened to the L-type bolt 200 in the form of a clip and fixed.

For example, when the size of the coupling hole 301 is enlarged by applying an external force to the spread portion 340, the L-type bolt 200 is inserted, and when insertion of the L-type bolt 200 is completed, it is applied to the spread portion 340. By removing the external force and reducing the size of the coupling hole 301, the fall prevention washer 300 can be fixed to the L-type bolt 200. At this time, the fall prevention washer 300 can be more firmly fixed to the L-type bolt 200 by the zigzag shape of the locking portion 310.

As described above, the L-type bolt fastening structure according to the present invention uses the fall prevention washer 300 according to the first to fifth embodiments to connect the L-type bolt 200 to the hole guard 100 or the lower structure (G). ), the L-type bolt 200 can be prevented from falling to the bottom of the lower structure (G).

Continuing to refer to Figures 1 and 2, the bracket 500 may be "L" shaped as can be seen in the drawings, but is not limited to this and has one side coupled to the equipment and the other side supporting the Various other forms that can be combined can be applied.

One side of the bracket 500 is provided with one or more first coupling holes 501 for coupling with equipment, and the other side is provided with a second coupling hole 502. The coupling bolt 900 is fastened to the screw hole (not shown) of the equipment through the first coupling hole 501 of the bracket 500, and the L-shaped bolt 200 is inserted into the second coupling hole 502. . Accordingly, the bracket 500 may be placed on the top of the fall prevention washer 300.

At this time, a buffer pad 400 having a washer hole 401 may be included between the bracket 500 and the lower structure (G). The buffer pad 400 may be disposed on the upper part of the lower structure (G) so that the fall prevention washer 300 is inserted into the washer hole 401. Therefore, the shock pad 400 can prevent the vibration flowing from the lower structure G from being transmitted to the upper part, and the fall prevention washer 300 can prevent the bracket 500 from structurally floating. .

An erection auxiliary tool 600, a coupling washer 700, and a fixing nut 800 may be disposed on the upper part of the bracket 500.

When fastening the L-type bolt 200 using the fixing nut 800, the upright assist tool 600 can prevent the L-type bolt 200 from tilting and allow it to be fastened in an upright state. Accordingly, the erection assisting tool 600 may have a hole into which the body of the L-type bolt 200 is inserted, and may have a predetermined height so that the L-type bolt 200 can be erected and maintain a positive posture.

A coupling washer 700 is disposed on the upper part of the upright auxiliary tool 600, and a fixing nut 800 is fastened to the upper part of the coupling washer 700. After fixing the fixing nut 800, a protrusion may be formed on the surface of the coupling washer 700 to prevent the fixing nut 800 from loosening due to vibration or external impact.

Figures 18 to 21 are diagrams showing a method of mounting an L-type bolt fastening structure using the hole guard of the present invention.

First, referring to FIG. 18, the hole guard 100 is mounted on a lower structure (G) such as a large hole or a steel pad with a large long hole. At this time, the hole guard 100 in which the hole insertion portion 120 of the hole guard 100 has the same size and shape as the hole of the lower structure (G) may be selected, and the equipment fixed on the lower structure (G) Depending on the device, one or two or more may be placed below the support unit 110.

Referring to FIG. 19, an L-type bolt 200 equipped with a fall prevention washer 300 is fastened to the hole guard 100. The L-type bolt 200 can be fastened by inserting the lower horizontal portion 220 into the hole guard 100 at the upper part of the lower structure (G). At this time, the L-type bolt 200 is fixed by the fall prevention washer 300 to prevent the L-type bolt 200 from falling to the lower part of the lower structure (G).

Referring to FIG. 20, a buffer pad 400 is mounted on the hole guard 100. The buffer pad 400 can be arranged to cover the entire upper surface of the hole guard 100, and the L-type bolt 200 and the fall prevention washer 300 are exposed to the outside by the hole formed in the buffer pad 400. It can be. For example, the cushioning pad 400 is preferably made of an elastic rubber material.

Referring to FIG. 21 , a bracket 500 may be placed on the buffer pad 400. Additionally, the upright auxiliary tool 600, the coupling washer 700, and the fixing nut 800 may be sequentially fastened to the L-type bolt 200 exposed to the bracket 500. At this time, the L-type bolt 200 can be fastened by the fixing nut 800 in an upright state by the erection auxiliary tool 600.

As described above, the L-type bolt fastening structure using the hole guard of the present invention has a large hole or a large long hole because the L-type bolt 200 is fastened with the hole guard 100 mounted on the lower structure (G). It is possible to fasten using the L-type bolt 200, such as a steel pad (S) having a steel pad (S) or a grating where the holes are damaged and the size of the hole is not constant.

In addition, a protrusion 350 is provided on the lower surface of the hole guard 100 to prevent the L-type bolt 200 from rotating when the L-type bolt 200 is installed, and the bent portion of the L-type bolt 200 A locking groove 231 or an upright auxiliary part 232 may be provided so that the fixing nut 800 can be fastened while the L-type bolt 200 is upright.

Furthermore, since it is possible to install bolts in one direction for holes of various sizes using the hole guard 100 and the L-type bolt 200, they can be used as hooks on H-beam structures, ceilings, or wall structures at construction sites in addition to floors at industrial sites. It is widely used as a hanger, etc.

Meanwhile, the embodiments of the present invention disclosed in the specification and drawings are merely provided as specific examples to aid understanding, and are not intended to limit the scope of the present invention. It is obvious to those skilled in the art that in addition to the embodiments disclosed herein, other modifications based on the technical idea of the present invention can be implemented.

100: Hole guard 110: Support part
120: hole insertion part 130: first protrusion
140: second protrusion 200: L-type bolt
210: upper vertical part 220: lower horizontal part
230: Bend portion 231: Locking groove
232: Upright auxiliary part 300: Fall prevention washer
310: catching part 320: insertion part
330: ring part 340: opening part
350: protrusion 400: buffer pad
500: Bracket 600: Upright auxiliary tool
700: Combined washer 800: Fixing nut

Claims (20)

A lower structure located below the equipment of an industrial facility and having a hole for fastening;
A hole guard inserted into and fixed to the hole of the lower structure;
An L-shaped bolt composed of an upper vertical portion with a threaded portion and a lower horizontal portion extending from the bottom of the upper vertical portion through a bend, and inserted into the hole guard; and
An L-type bolt fastening structure that is fastened to the L-type bolt in the form of a ring and includes a fall-prevention washer supported on the hall guard to prevent the L-type bolt from falling to the lower part of the lower structure. The method of claim 1, wherein the hole guard is:
A support part disposed on the upper part of the lower structure;
a hole insertion part disposed below the support part and inserted into a hole of the lower structure; and
An L-type bolt fastening structure including a bolt hole formed through the support portion and the hole insertion portion to allow the L-type bolt to be inserted. According to paragraph 2,
An L-type bolt fastening structure in which two or more hole insertion portions are disposed in the lower portion of the support portion. According to paragraph 2,
An L-type bolt fastening structure in which the hole insertion portion has the same shape and size as the hole of the lower structure. According to paragraph 2,
An L-type bolt fastening structure in which the hole insertion portion has a cylindrical shape with a predetermined height. The method of claim 5, wherein the bolt hole is,
An L-type bolt fastening structure in which, when inserting the L-type bolt from its lower horizontal portion into the hole guard, the lower horizontal portion has a long hole shape so that the lower horizontal portion passes through the hole insertion portion. The method of claim 6, wherein the hole insertion unit,
a first protrusion formed on one side of the lower surface of the hole insertion part; and
An L-type bolt fastening structure that protrudes from a lower surface of the hole insertion portion and includes a second protrusion formed to be spaced apart from the first protrusion. In clause 7,
The first protrusion and the second protrusion are spaced apart by the thickness of the L-type bolt such that the lower horizontal portion of the L-type bolt is disposed and fixed between the first protrusion and the second protrusion. In clause 7,
An L-type bolt fastening structure in which the height of the first protrusion has a higher height than the height of the second protrusion. According to paragraph 2,
An L-type bolt fastening structure in which the hole insertion portion is divided into two sides at the lower part of the support portion. The method of claim 10, wherein the hole insertion unit,
a first protrusion formed on one side of the lower surface of the hole insertion part; and
An L-type bolt fastening structure that protrudes from a lower surface of the hole insertion portion and includes a second protrusion formed to be spaced apart from the first protrusion. According to paragraph 2,
An L-type bolt fastening structure in which the hole insertion portion has a ring shape. According to paragraph 1,
The L-type bolt further includes a locking groove in the form of a groove having a predetermined angle on a bent inner portion of the bent portion. The method of claim 1, wherein the fall prevention washer,
A ring-shaped locking portion supported on the upper surface of the hole guard; and
An L-type bolt fastening structure formed inside the engaging portion and including a coupling hole into which the L-type bolt is inserted. According to clause 14,
The L-type bolt is an L-type bolt fastening structure further comprising an upright auxiliary part having a protruding shape on a bent outer portion of the bent portion. According to clause 15,
The fall prevention washer is an L-type bolt fastening structure further comprising a mounting groove formed in the locking portion so that the locking portion passes through the upright auxiliary portion and is mounted on the upper vertical portion of the L-type bolt. According to clause 14,
An L-type bolt fastening structure wherein the engaging portion further includes a plurality of cutting portions formed inside the engaging portion. According to clause 14,
An L-type bolt fastening structure formed at a lower portion of the engaging portion and further comprising an insertion portion inserted into a hole of the lower structure. According to clause 14,
The engaging portion is formed in a zigzag shape,
An L-type bolt fastening structure that extends from the engaging portion and further includes a spreading portion that expands or reduces the size of the coupling hole by elasticity. The method of claim 1, wherein the fall prevention washer,
a ring-shaped ring portion having a coupling hole into which the L-type bolt is inserted;
a protrusion formed on one side of the ring portion; and
An L-type bolt fastening structure that is formed by being divided from the other side of the ring portion and includes an opening portion that is widened by external force and narrowed by elasticity.