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KR-20260066284-A - Connecting device including nut that can only move in a straight line, connecting device including bolt that can only be rotated, and system scaffold using the connecting devices

KR20260066284AKR 20260066284 AKR20260066284 AKR 20260066284AKR-20260066284-A

Abstract

The present invention discloses a female connecting device and a male connecting device used for vertical members, horizontal members, and bracing members constituting a system scaffolding. The female connecting device according to the present invention comprises: a tubular body through which a column member is joined; a flange formed protruding from the outer side of the tubular body and having a bolt insertion hole and a lower space formed at the bottom of the bolt insertion hole; a nut housing inserted into the lower space of the flange and having an internal space surrounded by side walls, wherein a rotation prevention means formed on the side walls engages with the inner wall of the lower space to prevent rotation; a nut installed inside the nut housing so as not to rotate and having a thickness thinner than the height of the internal space of the nut housing, thereby enabling vertical movement inside the nut housing; a support base having a through hole formed in the center and supporting the nut at the bottom of the nut housing; and a stop ring that supports the nut housing and the support base so as not to come apart and is joined to the inner wall of the lower space at the bottom of the support base. The connecting device according to the present invention uses built-in bolts and nuts, so that the restraint can be released only by a force applied in the rotational direction, thereby preventing the separation of core components of the system scaffolding due to vibration and accidental impact. In addition, since the possibility of the connecting device detaching due to vibration and accidental impact is minimized, safe installation and dismantling of the system scaffolding becomes possible, thereby significantly improving the safety of work at heights.

Inventors

  • 이동락
  • 김희경
  • 남정철
  • 김형호

Assignees

  • 한국중부발전(주)
  • (주)해람솔루션

Dates

Publication Date
20260512
Application Date
20241104

Claims (9)

  1. In a connecting device installed on a vertical member to connect a horizontal member or a bracing member, A tubular body through which a column member is joined; A flange formed protruding from the outer side of a pipe body, having a bolt insertion hole and a lower space formed at the bottom of the bolt insertion hole; A nut housing that is inserted into the lower space of a flange and has an internal space surrounded by side walls, wherein the side walls have a rotation prevention means formed therein that engages with the inner wall of the lower space to prevent rotation; A nut that is installed inside a nut housing so as not to rotate, and is capable of vertical movement inside the nut housing by having a thickness thinner than the height of the internal space of the nut housing; A support having a through hole formed in the center, which supports the nut at the bottom of the nut housing; A retaining ring that is coupled to the inner wall of the lower space at the bottom of the base, serving to support the nut housing and base so that they do not come apart. female connecting device including
  2. In paragraph 1, A female connecting device characterized in that the maximum outer diameter of the nut is larger than the minimum inner diameter of the internal space of the nut housing.
  3. In paragraph 1, The lower space includes a first lower space surrounded by a first inner wall, and a second lower space surrounded by a second inner wall formed at the bottom of the first inner wall with a diameter larger than that of the first inner wall. The base includes a first base that supports the lower end of the nut housing, and a second base that supports the first base at the lower end of the first base. The nut housing and the first base are inserted into the first lower space, and The second support is supported on the edge of a stopper formed between the first inner wall and the second inner wall while supporting the first support, and A female connecting device characterized by a retaining ring being coupled to a second inner wall to support a second support.
  4. In a connecting device coupled to the end of a horizontal member or a bracing member to connect to a vertical member, A connecting body joined to the end of a column member; A flange formed protruding from one side of a connecting body and having a bolt connection hole formed therein; A bolt that is coupled to a bolt connection hole and includes a head mounted on the upper surface of a flange and a column protruding to the lower part of the flange through the bolt connection hole, wherein a threadless section and a threaded section are formed in sequence from the bottom; A spring washer installed between the bolt head and the upper surface of the flange; A retaining ring that connects to the bolt post at the bottom of the flange to prevent the bolt from coming loose. Male connecting device including
  5. In paragraph 4, A male connecting device characterized by a recess formed on the bottom surface of a flange communicating with the bottom of a bolt connection hole, a retaining ring being connected to a bolt post inside the recess, and the depth of the recess being deeper than the thickness of the retaining ring.
  6. Column material; Female connecting devices installed in multiple places on a vertical member to connect a horizontal member or a bracing member; A vertical member connecting device that is connected to the top of a column member for joining the column members of other vertical members. Includes, The above-mentioned female connecting device is, A tubular body through which a column member is joined; A flange formed protruding from the outer side of a pipe body, having a bolt insertion hole and a lower space formed at the bottom of the bolt insertion hole; A nut housing that is inserted into the lower space of a flange and has an internal space surrounded by side walls, wherein the side walls have a rotation prevention means formed therein that engages with the inner wall of the lower space to prevent rotation; A nut that is installed inside a nut housing so as not to rotate, and is capable of vertical movement inside the nut housing by having a thickness thinner than the height of the internal space of the nut housing; A support having a through hole formed in the center, which supports the nut at the bottom of the nut housing; A retaining ring that is coupled to the inner wall of the lower space at the bottom of the base, serving to support the nut housing and base so that they do not come apart. A vertical member for system scaffolding characterized by including
  7. Column material; Male connecting device attached to each end of a column member to connect to a vertical member Includes, The above male connecting device is, A connecting body joined to the end of a column member; A flange formed protruding from one side of a connecting body and having a bolt connection hole formed therein; A bolt that is coupled to a bolt connection hole and includes a head mounted on the upper surface of a flange and a column protruding to the lower part of the flange through the bolt connection hole, wherein a threadless section and a threaded section are formed in sequence from the bottom; A spring washer installed between the bolt head and the upper surface of the flange; A retaining ring that connects to the bolt post at the bottom of the flange to prevent the bolt from coming loose. Horizontal member for system scaffolding characterized by including
  8. Column material; A pair of connecting members, each coupled to the upper and lower ends of a column member, comprising a column member coupling part coupled to the end of the column member, and a connecting device coupling part protruding from one side of the column member coupling part and having a central axis formed at an angle to the central axis of the column member coupling part; Male connecting device coupled to each connector to connect to a vertical member Includes, A connector is attached to the upper end of the column member so that the connecting device joint is inclined downward with respect to the longitudinal direction of the column member, and a connector is attached to the lower end of the column member so that the connecting device joint is inclined upward with respect to the longitudinal direction of the column member. The above male connecting device is, A connecting body coupled to the connecting device coupling part of the connector; A flange formed protruding from one side of a connecting body and having a bolt connection hole formed therein; A bolt that is coupled to a bolt connection hole and includes a head mounted on the upper surface of a flange and a column protruding to the lower part of the flange through the bolt connection hole, wherein a threadless section and a threaded section are formed in sequence from the bottom; A spring washer installed between the bolt head and the upper surface of the flange; A retaining ring that connects to the bolt post at the bottom of the flange to prevent the bolt from coming loose. Bracing material for system scaffolding characterized by including
  9. Each of a plurality of vertical members, each having a plurality of female connecting devices connected to a single column member; A horizontal member having both ends respectively connected to a female connecting device of the same height provided on adjacent first and second vertical members; Bracing members, each having both ends connected to female connecting devices of different heights provided on adjacent first and second vertical members. Includes, The above horizontal member includes a column member and male connecting devices that are respectively connected to both ends of the column member to be connected to a vertical member. The above bracing member comprises a column member, a pair of connectors each connected to the top and bottom of the column member, and a male connecting device connected to each connector to connect to a vertical member. Each connecting member of the above bracing member comprises a column member connecting part that is coupled to the end of the column member, and a connecting device connecting part that protrudes to one side of the column member connecting part and has a central axis formed at an angle to the central axis of the column member connecting part. The above male connecting device is, A connecting body capable of being connected to the end of a horizontal column member or the column member joint of a bracing member connector; A flange formed protruding from one side of a connecting body and having a bolt connection hole formed therein; A bolt that is coupled to a bolt connection hole and includes a head mounted on the upper surface of a flange and a column protruding to the lower part of the flange through the bolt connection hole, wherein a threadless section and a threaded section are formed in sequence from the bottom; A spring washer installed between the bolt head and the upper surface of the flange; A retaining ring that connects to the bolt post at the bottom of the flange to prevent the bolt from coming loose. System scaffolding characterized by including

Description

Connecting device including a nut that can only move in a straight line, connecting device including a bolt that can only be rotated, and system scaffold constructed using the connecting devices The present invention relates to a system scaffolding used for high-altitude work at industrial or construction sites. Specifically, it relates to a system scaffolding that prevents the detachment of core components and improves safety by using a connecting device equipped with a nut capable of only linear movement and a connecting device equipped with a bolt capable of only rotation when connecting core components of the system scaffolding, such as vertical members, horizontal members, and bracing members. System scaffolding is a temporary structure installed for work at heights in industrial sites, construction sites, and the like, and consists of a combination of core components—vertical members, horizontal members, bracing members, and work platforms—and other auxiliary components. For example, to install system scaffolding, one must perform tasks such as connecting vertical members to their tops, connecting both ends of horizontal members to adjacent vertical members, and connecting both ends of bracing members to adjacent vertical members, and use special auxiliary components to prevent separation between core components. Auxiliary components used to prevent detachment may include, for example, bolt and nut combinations, wedges, pins equipped with a detachment prevention mechanism, etc. However, among these, simple bolt-nut combinations pose a risk of safety accidents due to the problem of bolts and nuts detaching as screws loosen from impact and vibration. Pins equipped with anti-detachment mechanisms must always be attached to a core component using a wire or similar means, but they are rarely used currently because they often fall off during storage or transportation. Furthermore, although simple wedges are currently in use, the reality is that they cannot guarantee safety because there is a possibility they may detach due to a force applied from the opposite direction. FIG. 1 is a drawing illustrating a system scaffolding constructed using a female connecting device and a male connecting device according to an embodiment of the present invention. FIG. 2 is a drawing showing a vertical member equipped with a female connecting device according to an embodiment of the present invention. FIG. 3 is a perspective view of a female connecting device. FIG. 4 is a bottom perspective view of a female connecting device. FIG. 5 is a partially cutaway perspective view of the female connecting device. FIG. 6 is an assembled perspective view of a nut assembly. FIG. 7 is an exploded perspective view of a nut assembly. FIG. 8 is a drawing showing the state in which the nut of the nut assembly is raised. FIG. 9 is a drawing showing the state in which the nut assembly has been removed from the flange. FIG. 10 is a drawing showing the interior of the lower space formed in the flange. FIG. 11 is a partial cutaway view showing a state in which a nut assembly is mounted inside a flange. FIG. 12 is a perspective view showing a male connecting device. FIG. 13 is an exploded perspective view of a male connecting device. FIG. 14 is a partially cutaway perspective view and a front view of the male connecting device. FIG. 15 is a drawing showing the method of combining a female connector and a male connector. FIG. 16 is a cross-sectional view showing the state in which the bolt of the male connector is separated from the nut of the female connector. FIG. 17 is a cross-sectional view showing the state in which the bolt of the male connector is coupled to the nut of the female connector. FIG. 18 is a partial cross-sectional view of a state in which a female connector and a male connector are combined. FIG. 19 is a drawing showing a horizontal member equipped with a male connecting device according to an embodiment of the present invention. FIG. 20 is a drawing showing a state in which a male connecting device is coupled to the end of a horizontal member. FIG. 21 is a drawing showing a brace member equipped with a male connecting device according to an embodiment of the present invention. FIG. 22 is a drawing showing a connector for a brace member for joining a male connecting device. FIG. 23 is a drawing showing the state in which male connecting devices are attached to the bottom and top of the bracing member, respectively. FIG. 24 is a drawing illustrating a unit frame of a system scaffolding constructed using a female connecting device and a male connecting device according to an embodiment of the present invention. FIG. 25 is a drawing specifically showing various configurations in which horizontal members and bracing members are combined with vertical members. Preferred embodiments of the present invention will be described below with reference to the drawings. For reference, it should be noted in advance that although parts of the