JPH0517005U - Curing lid for opening - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] A protective lid that closes the opening formed in the floor slab, and the function of the original protective lid and the safety that surrounds the opening with the opening open Combined with the function of the fence, improve safety measures without troublesome work. A lid member 8 that closes the opening 2 with two pieces is pivotally attached to a rectangular frame 6 installed on the floor around the opening 2 formed in a floor slab so as to be switchable to an upright state. A connecting member 9 for holding the standing state B of the lid member 8 is configured to be attachable to both ends of the two lid members 8 in the standing state in the longitudinal direction thereof.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a curing lid for an opening formed on a floor of a construction site.

[0002]

[Prior Art]

 For example, when building a building with a basement, a rectangular opening is formed in the floor slab on the lowest floor for loading and unloading equipment into and out of the basement and for workers to enter and exit. As a safety measure to prevent the opening from falling, a fence is placed around the opening and a curing lid is installed at the opening.

[0003]

[Problems to be solved by the device]

 However, if there is a fence around the opening, there is a problem in terms of workability because of the inconvenience of having to bypass the fence when traveling a unicycle or carrying long materials. It was

Alternatively, when the opening is closed by a field cover, thick plywood, or other protective cover such as expanded metal, the above-mentioned problems in working are eliminated, but the protective cover is removed each time the work goes in and out of the opening. Since it is forced to remove it sideways and put it back in again, and because the work is troublesome, the opening is often left open without being closed by the curing lid, which is a safety measure. I had a problem with.

In addition, it is desirable to install a fence around the opening for safety when working with the curing lid removed, but not only a fence for that purpose is required but also a safety measure is required. There is a problem in that the countermeasure work becomes more troublesome.

An object of the present invention is to provide a curing lid for an opening that is suitable for safety measures and that can eliminate the above inconvenience.

[0007]

[Means for Solving the Problems]

 The curing lid for an opening according to the present invention, which has achieved the above object, is a frame member facing a rectangular frame installed on the floor surface around the opening and a lid member for closing the opening with two sheets. , Each of which is rotatably pivotable to the standing state, and a connecting member for holding the standing state of the lid member can be mounted on both ends of the two standing lid members in the longitudinal direction. It is characterized by

According to the above characteristic configuration, the opening is normally closed with the curing lid, so that walking, transportation of materials, and traveling of a unicycle can be safely performed without bypassing the opening. .. Then, if necessary, the lid member is erected and the connecting member is attached to the lid member by a simple operation, the opening is opened with the lid member and the connecting member serving as a safety fence around the opening, and The opening is closed by a simple operation of folding the lid member. That is, the curing lid according to the present invention shows the state in which the opening is closed and the state in which the opening with the safety fence is opened is exposed in the place where it is installed.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show a curing lid 3 for a rectangular opening 2 formed in a floor slab 1, and two angle steel members slightly longer than the short sides of the rectangular opening 2 and a rectangular opening 2 are provided. Two angle steel materials, which are slightly longer than the long sides, are used as frame members 4 and 5, respectively, which are laid down and welded at both ends. A rectangular frame body that is slightly larger than the opening edge of the opening 2 in plan view. It is composed of 6.

Then, the shafts 7, 7 are pivotally attached to both ends in the longitudinal direction of the frame member 4 of the short side facing each other, and the length of the long side is slightly shorter than that of the long frame member 5, and the length of the two sides is slightly shorter. One end in the width direction of the lid member 8 made of striped steel plate of approximately the same size to close the opening 2 with a sheet is welded to the shaft 7, and the lid members 8 and 8 are closed by folding. The state A and the upright standing state B can be switched.

In the figure, 9 and 9 are connecting members, which are formed by welding the U-shaped members 11 and 11 to both ends of the connecting rod 10 in the longitudinal direction, and the two lid members 8 in the standing state B. By mounting the U-shaped members 11 and 11 on both ends in the longitudinal direction of the lid members 8 from above, the standing state B of the lid members 8 can be maintained.

According to the above configuration, the curing lid 3 is installed on the floor surface around the opening 2, and the lid members 8 and 8 are folded to expose the opening closed state A. It is possible to walk over and carry materials without bypassing the opening 2. Further, since the frame members 4 and 5 made of angle steel are laid down, for example, a riding of a unicycle on the curing lid 3 can be performed easily and safely.

Then, with the curing lid 3 still installed in the opening 2, the lid members 8 and 8 are switched to the standing state B, and the connecting members 9 and 9 are provided over both longitudinal ends of the lid members 8 and 8. By mounting the lid member 8 and the connecting members 9 and 9, the opening 2 is opened in a state of forming a safety fence around the opening 2, and the entrance and exit through the opening 2 Work can be performed safely. In addition, by removing the connecting members 9 and 9 and switching the cover members 8 and 8 to the closed state A in the field work, the closed state of the opening 2 by the original curing lid 3 appears. is there.

3 and 4 show another embodiment of the curing lid 3. In this embodiment, both ends of the connecting rod 10 are bent in the same direction with one end lengthened to form the connecting member 9. On the other hand, on the back surfaces of the corners of the lid members 8 and 8 on the free end side, the pipe members 12 whose axial center is oriented vertically in the standing state B of the lid members 8 are welded, and the pipe portions at different positions The bent portion 10a on one end side of the connecting member 9 is inserted into the material 12, and the retaining member 13 is attached to the end portion of the bent portion 10a. An elastic holding member 14 for elastically holding the longitudinal middle portion of the connecting member 9 is provided on the back side of the lid members 8 and 8 so that the connecting member 9 is held by each of the lid members 8. There is.

According to this structure, a storage place for the connecting member 9 is unnecessary, and when the opening 2 is opened, the lid members 8 are switched to the standing state B to elastically clamp the connecting member 9. It is characterized in that the upright state B of the lid members 8 and 8 is maintained by removing the bent member 10b from the other end 14 and inserting the bent portion 10b on the other end side of the connecting member 9 into the pipe member 12 of the mating lid member 8. There is.

In addition, in this other embodiment, triangular plate-like members 15 are provided at the four corners of the rectangular frame body 6, and the locking members 16 that are locked to the inner surfaces of the corners of the opening 2 are formed in the plate-like shape. The lower surface of the member 15 is welded to prevent the curing lid 3 from being displaced on the floor surface.

Although the lid member 8 is made of striped steel plate, it can be changed to, for example, a wire mesh whose periphery is kept flat steel or other expanded metal. Further, although the angle steel materials are used as the frame members 4 and 5, they can be changed to flat steel or lightweight steel.

[0018]

[Effect of the device]

 As described above, the curing lid for the opening according to the present invention has not only the function as the original curing lid but also the function of a safety fence that surrounds the opening with the opening opened. By closing the opening with a curing lid, it is possible to walk, carry materials, or run a unicycle safely without bypassing the opening. In addition, the opening can be opened with the cover member and the connecting member serving as a safety fence around the opening by a simple work of erecting the cover member at the place where the curing lid is installed and attaching the connecting member. However, improved safety measures have been achieved without tedious work.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a standing state of a lid member.

FIG. 2 is a perspective view showing a standing state of a lid member.

FIG. 3 is a cross-sectional view showing a standing state of a lid member of another embodiment.

FIG. 4 is a perspective view showing a standing state of a lid member according to another embodiment.

[Explanation of symbols]

2 ... Opening part, 5 ... Frame member, 6 ... Rectangular frame body, 8 ... Lid member,
9 ... Connection member, B ... Standing state.

Claims (1)

[Scope of utility model registration request] 1. A lid member that closes the opening portion with two pieces is pivotally attached to a frame member facing the rectangular frame body that is installed on the floor surface around the opening portion so as to be switchable to an upright state, and is erected. A curing lid for an opening, characterized in that a connecting member for holding the standing state of the lid member can be attached to both ends of the two lid members in the state in the longitudinal direction thereof.