Pipe support and formwork support

Abstract

To provide a pipe support bearing implement which can easily mount a pipe support on a framework scaffold.SOLUTION: A pipe support bearing implement 20 is mounted on a standard 11 of a framework scaffold 10, and supports a pipe support 30 for supporting a beam form 2. The pipe support bearing implement 20 includes: a lower side insertion cylindrical body 21 which is inserted in an upper end of a vertical member 13 of the standard 11; a support plate 22 provided on the lower side insertion cylindrical body 21; and an upper side insertion cylindrical body 23 which is provided on the support plate 22, and inserted in a lower end of the pipe support 30. The pipe support bearing implement connects the standard 11 of the framework scaffold 10 and the pipe support 30.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a pipe support bearing that is attached to the top of the building frame of a framework scaffolding and supports a pipe support for supporting a formwork, and to a formwork support using this pipe support bearing. [Background technology]

[0002] 2. Description of the Related Art Conventionally, formwork supports in which pipe supports are attached on top of a framework scaffolding have been known (see Patent Documents 1 and 2). Patent Document 1 shows a pipe support connecting device that is attached to the top of a scaffolding structure and supports the pipe support. The pipe support connecting device includes an insert that is inserted into a support column of the scaffolding structure, a support plate that is provided on the insert and on which a base plate of the pipe support is placed, and a fastening means that is provided on the support plate and fixes the base plate to the support plate. Patent Document 2 shows a pipe support bearing that is attached to the top of a frame-type formwork gantry and supports a pipe support. The pipe support bearing includes a steel shaft that is inserted into the support column of the formwork gantry, and a bearing plate that is provided on the steel shaft and on which the base plate of the pipe support is seated. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-188901 A [Patent Document 2] JP 2018-145783 A Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present invention is to provide a pipe support bearing and formwork support that allow pipe supports to be easily attached onto frame scaffolding. [Means for solving the problem]

[0005] The pipe support bearing of the first invention (for example, the pipe support bearing 20 described later) is a pipe support bearing that is attached to the top of a building frame (for example, the building frame 11 described later) of a frame scaffolding (for example, the frame scaffolding 10 described later) and supports a pipe support (for example, the pipe support 30 described later) for supporting a formwork (for example, the beam formwork 2 described later), and is characterized in that it comprises a lower insertion cylinder (for example, the lower insertion cylinder 21 described later) that is inserted into the upper end of a vertical member (for example, the vertical member 13 described later) of the building frame, a support plate (for example, the support plate 22 described later) provided on the lower insertion cylinder, and an upper insertion cylinder (for example, the upper insertion cylinder 23 described later) that is provided on the support plate and inserted into the lower end of the pipe support, and connects the building frame of the frame scaffolding to the pipe support.

[0006] In conventional formwork support, when attaching pipe supports to the vertical members of the building frame of a scaffolding, a support jack is attached to the vertical member of the building frame, a support beam is attached to the support jack, and the pipe support is attached to the support beam. This causes problems such as interference between the claws of the fabric board and the handle of the support jack, the need to fix the bottom end of the pipe support to the support beam with wire, and the need for a base tie pipe. Therefore, according to the present invention, the lower insertion cylinder inserted into the upper end of the frame of the frame scaffolding and the upper insertion cylinder inserted into the lower end of the pipe support are integrated. Therefore, by inserting the lower insertion cylinder into the upper end of the frame of the frame scaffolding and the upper insertion cylinder into the lower end of the pipe support, the pipe support can be easily attached to the frame scaffolding. Therefore, when attaching the pipe support to the frame scaffolding, it is no longer necessary to use a beam jack, beams, or base tying pipes as in the past, and the formwork can be erected efficiently.

[0007] The formwork support of the second invention (for example, formwork support 1 described below) is a formwork support that supports a formwork, and is characterized by comprising a framework scaffolding, the above-mentioned pipe support bearing attached to the framework scaffolding, and a pipe support supported by the pipe support bearing.

[0008] According to this invention, when erecting formwork support using a framework scaffolding, the pipe support can be easily attached to the framework scaffolding by using the pipe support bearings. Therefore, conventional jacks, beams, and tying pipes are no longer necessary, and the framework can be erected efficiently. Effect of the Invention

[0009] According to the present invention, a pipe support bearing and formwork support can be provided that allow pipe supports to be easily attached onto frame scaffolding. [Brief description of the drawings]

[0010] [Figure 1] FIG. 2 is a side view of a formwork support according to one embodiment of the present invention. [Diagram 2] FIG. 2 is an enlarged view of the portion of the formwork support surrounded by dashed line A in FIG. 1. [Diagram 3] 3 is a view of the pipe support bracket of FIG. 2 taken along arrows BB and CC. [Figure 4] FIG. [Diagram 5] FIG. 2 is a side view of a test specimen used in a strength test. [Figure 6] FIG. 6 is a DD cross-sectional view of the test specimen in FIG. 5. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] The present invention is a pipe support bearing for connecting a pipe support to a scaffolding frame. The pipe support bearing includes a lower insertion tube that is inserted into the upper end of a vertical member of a building frame, a support plate provided on the lower insertion tube, and an upper insertion tube that is provided on the support plate and inserted into the lower end of the pipe support. Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view of a formwork support 1 according to one embodiment of the present invention. The formwork support 1 supports the beam formwork 2 on the upper floor and comprises a steel framework scaffolding 10 erected in a row directly below the beam formwork 2, a steel pipe support bearing 20 attached to the top of the framework scaffolding 10, and two rows of steel pipe supports 30 supported by the pipe support bearings 20 to support the beam formwork 2.

[0012] The frame scaffolding 10 comprises building frames 11 arranged at predetermined intervals along the beam formwork 2, a fabric frame 12 spanning between the building frames 11, and braces (not shown) that connect the building frames 11 to each other. The building frame 11 includes a pair of vertical members 13, a horizontal member 14 connecting the pair of vertical members, and a stiffening member 15 connecting the vertical member 13 and the horizontal member 14. The outer diameter of the vertical member 13 is 42.6 mm. The cloth frame 12 includes a flat cloth frame body 16 and claw portions 17 provided on both ends of the cloth frame body 16. The claw portions 17 of the cloth frame 12 are engaged with the horizontal members 14 of the building frame 11.

[0013] The pipe support 30 comprises a lower column tube 31 having an outer diameter of 60.5 mm, and an upper column tube 32 having an outer diameter of 48.6 mm inserted into the lower column tube 31. In this embodiment, the pipe support 30 is arranged upside down, which is different from the general usage of the pipe support 30. In other words, the upper column tube 32 is arranged on the lower side, and the lower column tube 31 is arranged on the upper side. The upper ends of adjacent pipe supports 30 attached to one building frame 11 are connected by horizontal joints 40. Wooden beams 41 are provided between the tops of the adjacent pipe supports 30, and the beam formwork 2 is placed on top of the beams 41. In addition, the tops of the pipe supports 30 in each row are connected by horizontal connectors 42.

[0014] Fig. 2 is an enlarged view of a portion of the formwork support 1 in Fig. 1 surrounded by a dashed line A. Fig. 3(a) is a view of the pipe support bearing 20 in Fig. 2 as viewed from an arrow BB. Fig. 3(b) is a view of the pipe support bearing 20 in Fig. 2 as viewed from an arrow CC. Fig. 4 is a perspective view of the pipe support bearing 20. The pipe support bearing 20 connects the vertical member 13 of the building frame 11 and the upper column pipe 32 of the pipe support 30. This pipe support bearing 20 includes a cylindrical lower insertion tube 21 that is inserted into the upper end of the vertical member 13 of the building frame 11, a support plate 22 provided on the lower insertion tube 21, and a cylindrical upper insertion tube 23 that is provided on the support plate 22 and inserted into the lower end of the upper column pipe 32 of the pipe support 30. Specifically, the lower insertion cylinder 21 is a joint pin, which is a general-purpose item for connecting the vertical members 13 of the building frame 11, cut in half.

[0015] Moreover, the upper insertion cylinder 23 is a general-purpose auxiliary support cut in half. An auxiliary support is generally used by being inserted into the upper column tube of a pipe support. In this embodiment, the part of this auxiliary support that is inserted into the upper column tube of the pipe support is used as the upper insertion cylinder 23. Therefore, the pipe support 30 is placed upside down, which is different from the general usage method, and the upper insertion cylinder 23 of the pipe support bearing 20 is inserted into the lower upper column tube 32 for use.

[0016] [Strength test] A test specimen as shown in Figures 5 and 6 was created and a strength test was carried out by applying a force from the axial direction to this specimen. The specimen was made by connecting a pipe support and a pipe with an outer diameter of 42.7 mm, which corresponds to the vertical member of the building frame, with a pipe support bearing, and both ends were knife-edged. The total length of this specimen was 2.56 m. As a result of this strength test, the breaking load of the specimen was 30.1 kN. According to the Scaffolding and Formwork Support Design Guidelines of the Temporary Construction Industry Association, if no connecting beams (horizontal ties) are provided, the allowable bearing capacity of pipe supports is stipulated as follows: When used at a height of 2m to 2.5m and the upper and lower ends are made of wood, the force is 17.6kN When used at a height of 2.5m to 3m and the upper and lower ends are made of wood, the force is 13.7kN Therefore, if the safety factor of the test specimen is doubled, the allowable load of the test specimen is 15kN. Since the total length of the test specimen is 2.56m, when compared with the allowable load of the pipe support with a height of 2.5m to 3m mentioned above, it exceeds the allowable load of 13.7kN for the pipe support with a height of 2.5m to 3m, and it was found to meet the standards shown in the Scaffolding and Formwork Support Design Guidelines.

[0017] According to this embodiment, the following effects are obtained. (1) The lower insertion cylinder 21 to be inserted into the upper end of the building frame 11 of the frame scaffolding 10 and the upper insertion cylinder 23 to be inserted into the lower end of the pipe support 30 are integrated. Therefore, by inserting the lower insertion cylinder 21 into the upper end of the vertical member 13 of the building frame 11 of the frame scaffolding 10 and inserting the upper insertion cylinder 23 into the lower end of the upper column pipe 32 of the pipe support 30, the pipe support 30 can be easily attached to the top of the frame scaffolding 10. Therefore, when attaching the pipe support 30 to the frame scaffolding 10, it is no longer necessary to use a beam support jack, beam material, or base tying pipe as in the conventional case, and the beam formwork 2 can be efficiently erected.

[0018] The present invention is not limited to the above-described embodiment, and modifications and improvements within the scope of the present invention that can achieve the object of the present invention are included in the present invention. [Explanation of symbols]

[0019] 1... Formwork support 2... Beam formwork 10...Frame scaffolding 11...Building frame 12...Cloth frame 13...Vertical member 14...Horizontal member 15...Stiffening member 16... Cloth frame body 17... Claw part 20... Pipe support bearing 21... Lower insert cylinder 22... Support plate 23...Upper insertion tube 30...Pipe support 31...Lower column pipe 32...Upper column pipe 40...Horizontal joint 41...Joiner 42...Horizontal joint

Claims

1. A pipe support support device that is attached to the top of a frame scaffolding building frame and supports a pipe support for supporting a formwork, A lower insertion tube that is inserted into the upper end of the vertical member of the building frame; A support plate provided on the lower insertion cylinder; an upper insertion tube provided on the support plate and inserted into the lower end of the pipe support; The lower insertion tube is a joint pin cut in half, The upper insertion cylinder and the support plate are portions of the auxiliary support that are inserted into the upper column tube of the pipe support, A pipe support bearing characterized by connecting the frame of the framework scaffolding to the pipe support.

2. A formwork support structure for supporting a formwork, Frame scaffolding and A pipe support bearing according to claim 1 mounted on the scaffolding; A pipe support supported by the pipe support bearing, The pipe support is arranged so that the upper column pipe is on the lower side and the lower column pipe is on the upper side, A formwork support structure characterized in that the upper insertion tube of the pipe support bearing is inserted into the upper column pipe of the pipe support.

Images