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KR-20260067016-A - Gangform Lifting System

KR20260067016AKR 20260067016 AKR20260067016 AKR 20260067016AKR-20260067016-A

Abstract

The present invention relates to a formwork lifting system for lifting a formwork for construction, specifically comprising: a formwork cage (20) composed of upper and lower cages; an upper rail (30) to which the upper cage is connected; and a lower rail positioned below the upper rail to which the lower cage is connected, wherein the lower rail is composed of a first guide rail (41), a second guide rail (42), and a connecting member (43) connecting them, wherein the connecting member (43) causes the second guide rail (42) to fold in either a first direction which is perpendicular to the longitudinal direction of the first guide rail (41) and perpendicular to the building outer wall, or a second direction which is perpendicular to the longitudinal direction of the first guide rail (41) and perpendicular to the first direction, and the lower rail (40) is configured to rise together with the rise of the formwork cage (20).

Inventors

  • 진원종
  • 김영진
  • 윤혜진
  • 이재흔
  • 구정모
  • 우준서

Assignees

  • 한국건설기술연구원
  • 주식회사 선진알씨에스

Dates

Publication Date
20260512
Application Date
20241105

Claims (9)

  1. As a gang form lifting system for lifting construction gang forms, A gang form cage (20) that is positioned in front of the building's outer wall and has a gang form installed thereon, and includes an upper cage (21) and a lower cage located below the upper cage (21); An upper rail (30) that is combined with an upper cage (21) and raised along the outer wall of the building together with a gang form cage (20); and It includes a lower rail (40) that is coupled and positioned at the lower part of the upper rail (30), is attached to the outer wall of the building and is raised together with the upper rail (30) as the gang form cage (20) is raised, and is coupled to the lower cage; The lower rail (40) is configured to include: a first guide rail (41) which is formed as a member extending in the longitudinal direction in which the upper rail (30) extends and whose upper portion is connected to the upper rail (30) by contacting the lower portion of the upper rail (30); a second guide rail (42) which is formed as a long extended member and is positioned on the lower side of the first guide rail (41); and a connecting member (43) which integrally connects the first guide rail (41) and the second guide rail (42). A gang form lifting system characterized by a connecting member (43) having a configuration that allows the second guide rail (42) to be folded in a first direction that is perpendicular to the longitudinal direction of the first guide rail (41) and perpendicular to the building outer wall, or in a second direction that is perpendicular to the longitudinal direction of the first guide rail (41) and perpendicular to the first direction.
  2. In paragraph 1, The above connecting member (43) is characterized by having a configuration in which one side in the vertical direction is fixedly connected to the first guide rail (41), and the other side in the vertical direction is connected to the second guide rail (42) in a hinge-like manner that allows rotation so that the second guide rail (42) extends forward while being orthogonal to the first guide rail (41), thereby forming a gang form lifting system.
  3. In paragraph 2, The connecting member (43) includes a main body (431) having a connecting hole (431a) formed therein and a connecting protrusion (432) that is fastened to the first guide rail (41); The connecting member (43) is provided on each of the left and right sides of the second guide rail (42); A through hole (421) is formed on each of the left and right sides of the second guide rail (42); The first pin member (44) is inserted into the connecting hole (431a) of the main body (431) and the through hole (421) of the second guide rail (42), so that the second guide rail (42) rotates with the first pin member (44) as the center of rotation; A gang form lifting system characterized by the second guide rail (42) being folded in a shape that extends forward while being perpendicular to the first guide rail (41).
  4. In paragraph 3, In each connecting member (43), the connecting holes (431a) of the main body (431) are provided in a spaced-apart manner along the direction in which the connecting member (43) extends; Through holes (421) of the second guide rail (42) are also provided in a spaced-apart manner along the direction in which the second guide rail (42) extends; Among the plurality of connecting holes (431a), a second pin member (45) is further inserted into a connecting hole located vertically above the connecting hole into which the first pin member (44) is inserted, and into a through hole of the second guide rail (42) corresponding thereto; A gang form lifting system characterized by the rotation of the second guide rail (42) being constrained by the first and second pin members (44, 45), so that the second guide rail (42) is aligned and fixed to coincide with the longitudinal direction of the first guide rail (41).
  5. In paragraph 1, A connecting protrusion (411) having a through hole (412) formed in a first direction perpendicular to the building outer wall is formed in a shape protruding outward from the lower side of the first guide rail (41); The connecting member (43) includes a main body (431) and a connecting protrusion (432) integrally formed in a protruding form on the main body (431) and having a through hole (431a) formed therein that penetrates in the front-rear direction; A connecting protrusion (432) and a coupling protrusion (411) are overlapped so that the through holes (431a, 412) are in communication with each other, and a pin member (46) is inserted through them, so that the connecting protrusion (432) and the coupling protrusion (411) are joined in a hinge manner that allows them to rotate with the pin member (46) as a rotation axis; A gang form lifting system characterized by the main body (431) being integrally connected to the side of the second guide rail (41) so that the connecting member (43) connects the first guide rail (41) and the second guide rail (42).
  6. In paragraph 5, The connecting protrusion (411) is installed on each of the left and right sides of the first guide rail (41); A connecting member (432) is also provided on each of the left and right sides of the second guide rail (41); One of the connecting members (423) provided on both the left and right sides of the second guide rail (41) is rotatably hinged to a coupling protrusion (411) installed on one of the left and right sides of the first guide rail (41), and the other one is separated from the coupling protrusion (411) of the first guide rail (41). A gang form lifting system characterized in that the second guide rail (42) can be bent and folded in a side direction in which the connecting protrusion (411) and the connecting member (423) are joined, which is perpendicular to the longitudinal direction of the first guide rail (41) and also perpendicular to the first direction.
  7. In paragraph 1, At the portion where the upper part of the first guide rail (41) contacts the lower part of the upper rail (30), the first guide rail (41) and the upper rail (30) are arranged in an overlapping manner; In the portion where the first guide rail (41) and the upper rail (30) overlap, a fastening guide member (52) is arranged in the form of a bar that is extended in the front-rear direction, with an elongated hole formed on one side of the extended bar and a simple circular hole formed on the other side, so that the first guide rail (41) and the upper rail (30) are integrally joined by the fastening guide member (52); A gang form lifting system characterized by having a configuration such that when a bolt is inserted into an elongated hole on one side of a fastening guide member (52) and fastened to a first guide rail (41), the first guide rail (41) and the upper rail (30) are firmly connected so that their positions do not change, but when the bolt inserted into the elongated hole is not pressing enough to fasten the fastening guide member (52), the first guide rail (41) or the upper rail (30) can move in the forward and backward directions along the length of the elongated hole, and the upper rail (30) moves forward and backward by a force applied forward to the upper rail (30), thereby allowing the upper rail (30) to adjust the distance from the building's outer wall.
  8. In paragraph 1, A roller bracket (51) is provided at the bottom of the upper rail (30) to protrude forward at an angle to the upper rail (30); A rail bracket (50) is integrally provided on the first guide rail (41) so as to extend forward at an angle to the first guide rail (41); A formwork lifting system characterized by the upper rail (30) and the first guide rail (41) being joined by the rail bracket (50) being connected to the roller bracket (51) at the lower part of the roller bracket (51).
  9. In paragraph 8, A roller bracket (51) is provided at the bottom of the upper rail (30) to protrude forward at an angle to the upper rail (30); The rail bracket (50) is formed in the shape of a rectangular box with an open top and is composed of a member that extends long forward; Side rails are formed on the left and right sides inside the rectangular box of the rail bracket (50), respectively, to which the roller bracket (51) can slide and move; When the rail bracket (50) is connected to the roller bracket (51) at the bottom of the roller bracket (51), the roller bracket (51) is guided by the rail bracket (50) and becomes capable of sliding in the forward and backward directions; A formwork lifting system characterized by having a configuration in which the width of the open upper portion of the rail bracket (50) is narrower than the lower portion of the roller bracket (51) that is fitted into and contacts the side rail, so that when the roller bracket (51) and the rail bracket (50) are connected, the rail bracket (50) is prevented from being separated from the roller bracket (51) and falling downward.

Description

Gangform Lifting System having a 2-way folding structure of guide rails The present invention relates to a gang form lifting system, and more specifically, to a gang form lifting system having a configuration in which gang forms are lifted sequentially to pour concrete forming the exterior wall of a building, wherein the guide rail has a configuration in which it can be folded in two directions, thereby allowing the guide rail to be easily installed, reducing installation costs, and shortening assembly and installation time. In constructing buildings such as high-rise apartments where the floor plan of the upper and lower levels is identical, a "Gangform Climbing System" is used. This system utilizes a cage integrally connected to the formwork, equipped with scaffolding for the installation and dismantling of exterior wall formwork and for plastering and finishing (rendering) work. As the building is constructed sequentially upward, the cage is lifted and raised together with the formwork. Prior art related to gangform climbing systems is described in Korean Registered Patents No. 10-1436062 and No. 10-2387167. For convenience, the cage equipped with such a gangform is referred to as a "gangform cage" in this specification. In a gang form lifting system, a guide rail is installed that is raised vertically along a reinforced concrete structure by a hydraulic cylinder. A gang form cage is attached to the guide rail. In this gang form lifting system, the guide rail is raised by the hydraulic cylinder while the guide shoe installed on the outer wall of the building is engaged with the guide rail, and consequently, the gang form cage attached to the guide rail also rises upward. Specifically, when a reinforced concrete building is constructed to a certain height, a guide shoe is installed on the outer wall of the building, and a guide rail is movably installed on the guide shoe. Then, the guide rail is raised using a hydraulic cylinder. Since the gang form cage is attached to the guide rail, the gang form cage rises together with the guide rail when the guide rail rises. As the gang form cage is equipped with a work platform to form a workspace, the worker installs the formwork (gang form) for concrete pouring and pours concrete within the workspace of the gang form cage, thereby constructing the building through this process. Generally, a gang form cage consists of an upper cage located vertically at the top and a lower cage located below it. The upper cage is equipped with a work platform for the installation and dismantling of formwork, while the lower cage is fixed to the bottom of the upper cage and is equipped with a work platform for plastering and finishing work. As the gang form cage is divided into upper and lower sections as described above, guide rails to which the gang form cages connect must also be installed for both the upper and lower cages. However, since a height of at least three stories is required for guide rails to be installed on both the upper cage and the lower cage, conventionally, the lower cage was installed with the upper cage raised to a height of approximately three stories. Figures 1 and 2 each show schematic diagrams sequentially illustrating the process of installing a gang form cage and guide rails according to the prior art. After installing the upper cage (100) at the height of the first floor of the building as shown in Figure 1 (a), the upper cage (100) is raised to the height of the third floor of the building as shown in Figure 1 (b). At this time, the guide rail (upper rail) is already attached to the upper cage (100). Subsequently, as shown in FIG. 1 (c), a lifting device (e.g., a winch) equipped with a wire (110) is installed on the upper cage (100), and a guide rail (lower rail) (200) for the lower cage is connected to the lower end of the wire (110). Then, by operating the lifting device, the wire (110) is pulled to raise the guide rail (200) for the lower cage as shown in FIG. 2 (a) and (b), thereby vertically positioning the guide rail (200) for the lower cage on the lower part of the upper cage (100). Then, as shown in FIG. 2 (c), the lower cage (300) is fixedly installed on the guide rail (200) for the lower cage and the upper cage (100). If necessary, the guide rail (200) for the lower cage may be integrally connected with the guide rail (upper rail) coupled to the upper cage (100). These conventional technologies have the following problems. The guide rail (200) for the lower cage, which is installed below the upper cage (100), is used after the upper cage (100) is installed at a height of about three stories of the building as described above, so it must be stored in a separate external storage area until the building is constructed to a height of about three stories. A number of guide rails are required to construct one floor of the building, and not only is there cost involved in storing the number of guide rails in a separate storage area, but there is als