JP2017031692A - Slipping-out preventive wedge metal fitting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slipping-out preventive wedge metal fitting constituted of a comparatively simple structure, and preventing a wedge part (a taper part) from slipping out of a locking metal fitting by an unexpected load.SOLUTION: A slipping-out preventive wedge metal fitting comprises a bottom plate 13 and a side plate 14 formed around the bottom plate 13, and comprises a wedge member 19 having a pipe installation part 17 for fitting-fixing an end part of a pipe material 15 in an upper part and a taper part 18 fitted in a locking metal fitting 12 under the pipe installation part 17, and a slipping-out preventive material 21 arranged in the wedge member 19, composed of an elastic member and having a stopper part 20 elastically projecting from under the locking metal fitting 12 when installing the taper part 18 in the locking metal fitting 12 from above.SELECTED DRAWING: Figure 2

Description

The present invention is attached to a locking bracket having a U-shaped cross section provided on a side portion of a temporary pillar made of pipe material used in civil engineering or a construction site (usually two steps around the periphery). The present invention relates to a drop prevention wedge fitting provided at one end of a tube material.

Temporary mounts are provided in civil engineering or construction sites to perform work at high places. For example, as shown in FIG. 4, the temporary mount has a cross-sectional core in which the cross-sectional area gradually increases toward the upper side and the side plates 77 and 78 become parallel to the side of the column 70 made of pipe material. A plurality of letter-shaped locking fittings 71 are attached, and a wedge fitting 73 provided at the end of the tube material 72 is attached to the locking fitting 71 (see Patent Documents 1 and 2).

When the wedge fitting 73 is attached to the locking fitting 71, after the wedge portion (tapered portion) 74 of the wedge fitting 73 is inserted into the locking fitting 71 from above, the operator uses a hammer to The wedge portion 74 has been struck into the locking fitting 71 to such an extent that it cannot be easily removed. As described above, the locking metal 71 has side plates 77 and 78 on both sides in parallel, and the front plate 79 has a wedge hole shape that opens upward with respect to the column 70.

JP 2010-275770 A JP 2014-211052 A (FIG. 6)

However, since the wedge fitting 73 described in Patent Documents 1 and 2 only has the wedge portion 74 mounted on the locking fitting 71, the wedge portion 74 may be detached due to an unexpected load (for example, a push-up load from below). There is also.

The present invention has been made in view of such circumstances, and provides a slip-preventing wedge fitting that has a relatively simple structure and prevents the wedge portion (tapered portion) from being detached from the locking fitting due to an unexpected load. For the purpose.

The omission-preventing wedge fitting according to the present invention that meets the above-mentioned object is attached to the fitting fitting provided in the end portion of the pipe material and in the U-shaped cross-section provided in the side portion of the temporary column used in the civil engineering or construction site. It is a wedge prevention metal fitting,
A bottom plate and a side plate formed around the bottom plate; a pipe mounting portion into which an end portion of the pipe material is fitted and fixed at an upper portion; and a lower portion of the pipe mounting portion that is fitted into the locking metal fitting. A wedge member having a tapered portion, and an elastic member disposed in the wedge member, and when the tapered portion is mounted on the locking metal from above, a stopper portion that elastically protrudes from below the locking metal. And an omission prevention material provided.

Further, in the drop prevention wedge fitting according to the present invention, the drop prevention member includes a first flat portion disposed inside the wedge member, and a first flat portion connected to the first flat portion via a U-shaped bent portion. 2 plane parts, a 3rd plane part connected to the 2nd plane part via the 1st step, it communicates with the 3rd plane part via the 2nd step, and a tip part is bent inside. It is also possible to form the stopper portion having a fourth flat portion having a guide surface to be formed, and the second step abutting against a lower end of the locking metal fitting.

And in the drop prevention wedge fitting according to the present invention, the first flat portion and the second flat portion of the drop prevention material are parallel to each other, and the drop prevention material is formed by the L-shaped holding fitting in a side view. It is preferable that the wedge member is pressed and held inside.

When the taper portion of the wedge member is mounted on the locking bracket from above, the stopper member of the locking member protrudes from the lower end of the locking bracket. It will not come out.
Since the slip prevention material is made of an elastic member, the stopper part (the fourth flat part if necessary) is struck or pushed back (returned using a jig or the like if necessary) to remove the stopper part (the fourth flat part). It is possible to pull out the prevention wedge fitting.

(A)-(C) are each explanatory drawings of the use condition of the drop prevention wedge metal fitting which concerns on one embodiment of this invention. It is sectional drawing of the same wedge prevention wedge metal fitting. (A) is a front view of the same disconnection prevention wedge metal fitting, (B) is the same plan view, (C) is the same bottom view, (D) is the same left side view, and (E) is the same right side view. It is explanatory drawing of the wedge metal fitting which concerns on a prior art example.

Next, embodiments of the present invention will be described with reference to the accompanying drawings.
As shown in FIG. 1 to FIG. 3, a disconnection-preventing wedge fitting 10 according to an embodiment of the present invention is made of steel (including stainless steel), and is a temporary column (pipe material) used in civil engineering or a construction site. 11 has a bottom plate 13 and a side plate 14 formed around the bottom plate 13, and has a pipe material at the top. The pipe mounting portion 17 into which the end portion 15 is fitted and fixed is disposed below the pipe mounting portion 17, the wedge member 19 having a taper portion 18 fitted into the locking fitting 12, and the wedge member 19. When the portion 18 is mounted on the locking metal fitting 12 from above, the stopper 18 has a stopper portion 20 that elastically protrudes from below the locking metal fitting 12. These will be described in detail below.

The wedge member 19 includes a bottom plate 13 and a side plate 14 having a height of 2 to 3 cm which is provided upright around the bottom plate 13 by pressing a flat steel plate having a predetermined shape. A tube mounting portion 17 is provided on the upper portion of the wedge member 19, and a tube material 15 that is used for handrails and disposed in a horizontal state is fitted and fixed to the wedge member 19 by welding. The tapered portion 18 is the same as the wedge portion of a conventional wedge metal fitting, is tapered downward, and has a size that fits into the engagement hole 22 having a square cross section of the locking metal fitting 12.

The inside of the wedge member 19 is a space portion, and a slip-out preventing member 21 formed by bending an elastic plate member is fitted therein. An L-shaped presser fitting 24 is provided on the front side of the slip prevention member 21 in a side view to prevent the slip prevention member 21 from falling off.
The slip prevention member 21 is made of a spring material and is difficult to weld to the inside of the wedge member 19, but may be welded by performing a special heat treatment. A structure may be adopted in which the inner member is pressed and held so as not to be easily detached from the wedge member 19. The presser fitting 24 has a first side 25 and a second side 26 which are perpendicular to each other, and the first side 25 has a bottom plate 13 and a gap 28 and is arranged in parallel. The second side 26 has an arc shape that comes into contact with the tube material 15 and is fixed to the tube material 15 and the wedge member 19 by welding, screws, or the like. 24a is a screw hole, but can be omitted in the case of welding.

The slip prevention member 21 includes a first flat portion 30 disposed on the surface side of the bottom plate 13 inside the wedge member 19, and a second flat portion 32 connected to the first flat portion 30 via a U-shaped bent portion 31. A third plane portion 34 connected to the second plane portion 32 via the first step 33, and a stopper portion 20 formed by the second step to the third plane portion 34, and the tip And a fourth flat surface portion 37 having a guide surface 36 formed by bending the portion inward. In addition, the 1st plane part 30 and the 2nd plane part 32 are parallel.

The second step (stopper portion 20) is substantially perpendicular to the first plane portion 30. The second stage is always urged outward by the elasticity of the slip prevention member 21. The guide surface 36 can easily enter the engagement fitting 12 toward the lower inner side. Further, the inclined surface of the guide surface 36 is in contact with the engagement fitting 12, whereby the fourth plane portion 37 provided with the guide surface 36. 1 is pushed in the direction of the bottom plate, the lower side of the stopper 21 is inserted through the engagement fitting 12, and the stopper portion 20 is in contact with the lower end of the engagement fitting 12 as shown in FIGS. It is designed to protrude. Note that the fourth flat surface portion 37 also functions as a stopper portion. Moreover, it is preferable that the angle of the stopper part 20 and the latching metal 12 which this stopper part 20 latches is the range of 80-100 degree | times.

When using this drop prevention wedge metal fitting 10, as shown in FIG. 1A, the taper portion 18 of the drop prevention wedge metal fitting 10 is inserted into the engagement hole 22 of the locking metal fitting 12 from above. In this case, the stopper portion 20 and the fourth flat surface portion 37 are pushed inward and pass through the locking member 12 when the guide surface 36 abuts on the inner side of the locking member 12 (see FIG. 1B). .
The removal prevention wedge fitting 10 is removed from the locking fitting 12 by pressing the fourth flat portion 37 or hitting it with a hammer or the like.

FIGS. 3 (A) to 3 (E) show a five-side view of the drop prevention wedge fitting 10. The actual pipe 15 has a diameter of 42.7 mm, and the drop prevention wedge fitting 10 is provided at both ends thereof. The total length of the pipe material 15 is 1.8 m. The outer side of the bottom plate 13 of the wedge member 19 has an arc shape recessed in the center in accordance with the temporary column 11 to be attached, and an opening 40 is provided in the bottom plate 13 on which the tube mounting portion 17 is formed.

The present invention is not limited to the above-described embodiment, and the configuration thereof can be changed without changing the gist of the present invention.
For example, the slip-off prevention material may be fixed to the wedge member, or may have another known structure.

10: Detachable wedge bracket, 11: Temporary pillar, 12: Locking bracket, 13: Bottom plate, 14: Side plate, 15: Tube material, 17: Tube mounting portion, 18: Tapered portion, 19: Wedge member, 20: Stopper portion 21: engagement prevention material, 24: engagement hole, 24a: screw hole, 25: first side, 26: second side, 28: gap, 30: first flat part, 31: U-shape Bending part, 32: second plane part, 33: first step, 34: third plane part, 36: guide surface, 37: fourth plane part, 40: opening

Claims (3)

A wedge-preventing wedge fitting that is provided at the end of the pipe and is attached to a U-shaped locking bracket provided on the side of a temporary column used in civil engineering or construction sites,
A bottom plate and a side plate formed around the bottom plate; a pipe mounting portion into which an end portion of the pipe material is fitted and fixed at an upper portion; and a lower portion of the pipe mounting portion that is fitted into the locking metal fitting. A wedge member having a tapered portion, and an elastic member disposed in the wedge member, and when the tapered portion is mounted on the locking metal from above, a stopper portion that elastically protrudes from below the locking metal. An anti-detachment wedge fitting comprising an anti-detachment material provided. 2. The disconnection preventing wedge metal fitting according to claim 1, wherein the disconnection preventing member includes a first flat portion disposed inside the wedge member and a second flat portion connected to the first flat portion via a U-shaped bent portion. A plane portion, a third plane portion connected to the second plane portion via a first step, and a third portion connected to the third plane portion via a second step, with the tip portion bent inward. And a fourth flat portion having a guide surface, wherein the second step forms the stopper portion that contacts the lower end of the locking metal fitting. 3. The drop prevention wedge metal fitting according to claim 1, wherein the first flat surface portion and the second flat surface portion of the removal prevention material are parallel to each other, and the removal prevention material is formed by a L-shaped pressing metal fitting when viewed from the side. A wedge-preventing wedge fitting that is pressed and held inside the wedge member.

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