JPH03211185A - Reinforcement for elevator doorway frame - Google Patents

Abstract

PURPOSE:To make temporary reinforcement to the extent of installation easily mountable or demountable and prevent any crack or the like from occurring in a doorway frame by bolting a triangular boxlike reinforcing plate to a corner part of the doorway frame via a fitting patch and then connecting a lower reinforcing material attached to each lower end of both vertical frames to the reinforcing plate aslant by means of diagonal bracing. CONSTITUTION:A reinforcing plate 5 made up of bending each end of two sides of a right angle in a triangular plate into an L-shaped form is covered on an orthogonal corner part 4 of a doorway frame 1, and a bending part 6 and a vertical frame 2 are held in between with a fastener 7 and clamped by a bolt. Next, a patch 8 is placed on the backside of a horizontal frame 3, and this patch 8 is pressed by the bolt in mesh with a screw thread of the reinforcing plate 5, thus the reinforcing plate 5 is locked tight. Then, a lower reinforcing material 9 is attached to each lower end of symmetrical vertical frames 2 by means of spot welding, preventing these symmetrical vertical frames 2, 2 from being opened, and further these symmetrical reinforcing plates 5, 5 are connected to the lower reinforcing material 9 aslant by a diagonal bracing 10, and this diagonal bracing 10 is bolted of its upper end to the reinforcing plate 5, while the lower end is joined to the lower reinforcing material 9 by means of spot welding.

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a reinforcing device for an elevator doorway frame.

(Conventional technology) A conventional doorway frame will be explained with reference to FIG.

Recently, elevator entrance/exit frame 1 is installed in a factory by welding vertical frame 2 and horizontal frame 3 and assembling them in a U-shape in advance due to design considerations and to shorten the installation period. It is increasingly being transported to the site.

By the way, when the doorway frame 1 is assembled integrally in a U-shape as described above, when an external force is applied in the direction in which the vertical frame 2 spreads, a large concentrated stress is generated at the corner (4) where the vertical and horizontal frames join. arise. Therefore, if this joint point (corner) 4 is a welded structure, cracks are likely to occur.

This phenomenon is not a problem when transporting to the site because it is packed in a wooden box and no external force is applied to it, but when it is unloaded at the site or transported to the installation site, it is removed from the wooden box. This is because stress concentration occurs at the corner 4 due to external force when the bare doorway frame is hung or lifted by a crane.

That is, conventionally, no special reinforcing measures have been provided for bare doorway frames. This causes distortion and cracks at the corners.

(Problem to be solved by the invention) It would be good to reinforce the corners to prevent such problems from occurring, but adding reinforcement may cause distortions or scratches on the surface of the frame, so reinforcement is not necessary. I couldn't attach it.

Additionally, there are limits to how strong welding can be, and cracks may occur due to the inability to withstand torsional stress during installation.

It is an object of the present invention to solve these problems, to provide temporary reinforcement until installation, which can be easily installed and removed, and to prevent cracks from occurring in the doorway frame.

[Structure of the invention]

(Means for Solving the Problems) In order to achieve the above object, the present invention configures a reinforcing device as follows.

A reinforcing plate is formed into a triangular box shape by bending two right-angled sides of a triangular plate, and fitting it into the corner of the joint between the vertical frame and the horizontal frame of the doorway frame. Fasten the reinforcing plate to the doorway frame by tightening it with bolts through the plate. Furthermore, lower reinforcing members are attached to the lower ends of the left and right vertical frames, and using braces, the reinforcing plate and the lower reinforcing member are diagonally connected, and the upper end is bolted and the lower end is welded.

(Function) The reinforcing plate and the lower reinforcing material are all connected from the surface of the entrance frame by bolts or boiling, so installation and removal are easy, and the horizontal frame is attached via the plate. Therefore, there will be no scars from bolt tightening.

(Example) A reinforcing device for transportation according to the present invention will be described based on an example shown in FIGS. 1 to 4.

A reinforcing plate 5 formed by bending two right-angled edges of a triangular plate into an L-shape is placed over the right-angled corner 4 of the doorway frame 1. The bent portion 6 and the vertical frame 2 are sandwiched between the fasteners 7 and tightened with bolts.

A backing plate 8 is placed on the back side of the horizontal frame 3, and the reinforcing plate 5 is fixed by pushing the backing plate 8 with a bolt meshed with the screw of the reinforcing plate 5.

The lower reinforcing members 9 are attached to the lower ends of the left and right vertical frames 2 by welding to prevent the left and right vertical frames 2.2 from opening, and the left and right reinforcing plates 5.5 and the lower reinforcing members 9 are diagonally braced, respectively. Connect with 10. The upper end of the brace 10 is bolted to the reinforcing plate 5, and the lower end is welded to the lower reinforcing member 9.

In this way, the reinforcing plate 5, the brace 10 and the lower reinforcing member 9
Since the reinforcing metal fittings 11 are made of
Since the corner 4) at the junction with the horizontal frame 3 is covered and fixed, and the entire frame is fixed by bracing with the lower reinforcing material, there is no possibility of undue stress being generated at the corner, preventing cracks or cracks. Distortion can be prevented.

Further, since the reinforcing plate 5 and the lower reinforcing member 9 are fixed with bolts, they can be easily attached and removed.

This reinforcing metal fitting 11 can be repeatedly reused, and since the reinforcing plate 5 has a triangular shape, it is possible to cope with changes in the dimensions of the vertical frame 2 and the horizontal frame 3.

Also, as a method of displaying the reinforcing device during transportation, the reinforcing plate 5, the lower reinforcing member 9. By painting the braces 10, etc. yellow, it is possible to distinguish the parts to be removed by color, and to prevent errors during on-site work.

〔Effect of the invention〕

As explained above, according to the present invention, when transporting the doorway frame, it is possible to reliably protect the doorway frame with a reinforcing device of a simple structure, and it is also easy to remove, and the efficiency of on-site installation work is promoted.

[Brief explanation of drawings]

Figure 1 is a front view of the doorway frame according to the present invention, and Figure 2 is the front view of the doorway frame according to the present invention.
Figure 3 is a side view of Figure 1, Figure 4 is a view from the
Fig. 5 is a partially exploded perspective view, and Fig. 5 is a schematic front view of the installed doorway frame. 1... Entrance/exit frame 2... Vertical frame 3... Horizontal frame 4... Corner 5-... Reinforcement plate
9...Lower reinforcement material 10-...Brace

Claims (1)

[Scope of Claims] In an elevator doorway frame configured in a U-shape by a vertical frame and a horizontal frame, a reinforcing plate is attached to a corner of the doorway frame, and a lower reinforcing member attached to a lower part of the vertical frame and the reinforcement A reinforcing device for an elevator entrance/exit frame, characterized in that the plates are connected in a bracing manner.