JP2007091426A - Car floor of elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a car floor of an elevator having improved strength for a concentrated load. <P>SOLUTION: The car floor comprises a floor plate 1 of an elevator car, and a plurality of floor beams 4 serving as reinforcing material for supporting the floor plate 1 and arranged parallel to one another on a lower surface of the floor plate 1. Each of the floor beams 4 has a W-shaped cross section, and both W-shaped ends are extended in an outside direction to form both-end horizontal flange parts 41 and 42. A center horizontal flange part 43 is formed on a W-shaped central connection part. Each floor beam is connected to the lower surface of the floor plate 1 on at least three portions of the both-end horizontal flange parts and the center horizontal flange part. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a structure of an elevator car floor.

In the structure of a conventional elevator car floor, a plurality of elongated floor beams having a U-shaped cross section are arranged in parallel to each other on the lower surface of the floor board, and both U-shaped ends of each floor beam are extended outward. Thus, the horizontal hooks are formed, and the horizontal hooks at both ends are joined to the lower surface of the floor plate by welding. (For example, refer to Patent Document 1).
Conventional elevator car floor structures are, for example, as shown in FIGS. 2 is a perspective view showing the structure of a conventional elevator car floor, FIG. 3 is a side view showing the structure of a conventional elevator car floor, and FIG. 4 is a case where the pitch between floor beams is reduced to ensure strength. It is a side view.
In the figure, 1 is a floor plate of an elevator car, 2 is an elongated floor beam having a U-shaped cross section arranged in parallel with each other on the lower surface of the floor plate 1, and 21 and 22 are U-shapes of each floor beam 2. It is a both-ends horizontal collar part formed by extending the both ends of each to the outer side. The floor beam 2 is joined by welding two portions of both end horizontal flange portions 21 and 22 to the lower surface of the floor plate 1. In addition, 3 is a side beam connected with the both ends of each floor beam 2 by welding.

Japanese Utility Model Publication No. 56-72885

  In the conventional elevator car floor structure, the portion that is handled only by the floor plate 1 between the floor beams 2 adjacent to each other with respect to the concentrated load of a heavy load such as a carriage (pitch between the floor beams in FIG. 3). There is a problem that the strength of the concentrated load cannot be obtained. Further, when trying to increase the strength against concentrated load, as shown in FIG. 4, the pitch interval between the floor beams 2 adjacent to each other is reduced, or the plate thickness of the floor plate 1 itself is increased. Must. However, when the pitch interval between the floor beams 2 is reduced from d to c as shown in FIG. 4, there are new problems that the number of parts and weight of the floor beams increase and the number of welding points increases.

  In addition, a deck plate (also referred to as a keystone plate) that is widely used as a floor structure of a general building is, for example, a corrugated steel material 5 having a continuous cross section, as shown in FIGS. The deck plate made of such steel material 5 is fixed to the building floor beam 6 by welding or the like, and the concrete 7 is poured on the upper surface to form the building floor. In order to use the deck plate 5 having such a structure directly on the elevator car floor, the length and the width size are too large, and it has not been adopted due to the difficulty of cutting. Therefore, as described above, for elevator car floors, the actual situation is that flat steel plates are bent by a general-purpose press.

  The present invention has been made to solve the above-mentioned problems. The floor beam, which is a reinforcing material for supporting the floor board, has a W-shaped cross section, and has a horizontal flange portion and a central horizontal flange portion. It aims at providing the elevator car floor which improved the intensity | strength with respect to concentrated load by couple | bonding to the lower surface of a floor board by welding in three places, a horizontal saddle part and a center horizontal saddle part.

  In the elevator car floor according to the present invention, each floor beam is provided with a floor plate of the elevator car and a plurality of floor beams that are reinforcing members that support the floor plate and are arranged parallel to each other on the lower surface of the floor plate. Has a W-shaped cross section, both ends of the W-shape are extended outwardly to form horizontal flanges at both ends, a central horizontal collar is formed at the W-shaped central connecting portion, and both ends are horizontal. It is connected to the lower surface of the floor board at at least three points of the collar part and the central horizontal collar part.

  Further, the floor beam having a W-shaped cross section has a width dimension of the central horizontal ridge that is at least twice the width dimension of the horizontal ridges at both ends.

  According to the present invention, the floor beam, which is a reinforcing material that supports the floor board, has a W-shaped cross section, forms both end horizontal flanges and a central horizontal flange, and is formed at three positions: both end horizontal flanges and the central horizontal flange. Since it is joined to the lower surface of the floor plate by welding or the like, the strength against concentrated load can be improved with a simple configuration.

Embodiment 1.
1 is a side view showing a structure of an elevator car floor according to Embodiment 1 of the present invention.

  In the figure, 1 is a floor plate of an elevator car, 4 is a long and narrow floor beam having a W-shaped cross section arranged parallel to each other on the lower surface of the floor plate 1, and 41 and 42 are W-shaped of each floor beam 4. Both end horizontal flanges having a width dimension a formed by extending both ends of the frame in the outward direction, 43 is a central horizontal flange part having a width dimension b formed at the W-shaped central connecting portion of each floor beam 4. Yes, the width dimension b of the central horizontal collar 43 is set to be twice or more the width dimension a of the horizontal collars 41 and 42 at both ends. The W-shaped floor beam 4 is joined by welding the three ends of the horizontal flange portions 41 and 42 at both ends and the central horizontal flange portion 43 to the lower surface of the floor plate 1. Accordingly, the width c of the portion handled only by the floor plate 1 between the floor beams 4 adjacent to each other becomes narrow, and even if a concentrated load such as a carriage acts locally, the load is applied only by the floor plate 1. Since there are few parts to receive, intensity | strength can be increased. Reference numeral 3 denotes a side beam joined to both ends of each floor beam 4 by welding.

  In the elevator car floor structure configured as described above, the floor beam 4 as a reinforcing material for supporting the floor board 1 has a W-shaped cross section, and both end horizontal flange portions 41 and 42 and a central horizontal flange portion 43 are formed. And it is couple | bonded with the lower surface of the floor board 1 by welding in three places, the both ends horizontal collar 41,42, and the center horizontal collar 43. Accordingly, the width c of the portion handled only by the floor plate 1 between the floor beams 4 adjacent to each other becomes narrow, and even if a concentrated load such as a carriage acts locally, the load is applied only by the floor plate 1. Since there are few parts to receive, intensity | strength can be increased.

  Compared with the case where the pitch interval between the floor beams 2 is reduced in order to secure the conventional strength shown in FIG. 4, two of the conventional U-shaped floor beams 2 are of the W-shaped floor beam 4 of the present invention. Since the effect equivalent to that of one is shown, the number of parts can be reduced, and the number of welded parts is two in the case of two conventional U-shaped floor beams. In the case of one W-shaped floor beam 4, only three locations are required, which has the effect of reducing the number of welding locations.

  Further, by adjusting the width dimension b of the central horizontal flange 43 formed at the central connection part of the W-shaped floor beam 4, even if the size of the car floor changes, the distance between the adjacent floor beams 4 It can be easily handled without changing the c dimension. Thereby, even if the size of the car changes, the strength against concentrated load can be maintained. Of course, if the pitch interval of the floor beams 4 is changed, it is possible to easily cope with changes in the size of the car.

  In addition, when a deck plate that is widely used as a floor structure of a general building is used as a reinforcing material for a floor beam of a car, the shape of the end when the size of the car floor changes will collapse, According to this invention, the shape of the end portion when the size of the car floor changes does not collapse. Further, since the existing U-shaped floor beam press can be used as it is, it can be manufactured more easily than a deck plate that requires a special cutting machine.

It is a side view which shows the structure of the elevator car floor in Embodiment 1 of this invention. It is a perspective view which shows the structure of the conventional elevator car floor. It is a side view which shows the structure of the conventional elevator car floor. In the structure of the conventional elevator car floor, it is a side view when the pitch between floor beams is reduced in order to ensure strength. It is sectional drawing of the building floor which shows the deck plate currently widely used as a floor structure of a general building. It is sectional drawing along the AA in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Elevator car floor board 2 Floor beam 21 and 22 with U-shaped cross section 3 Horizontal beam 3 on both ends Side beam 4 Floor beam 41 and 42 with W-shaped cross section 4 Horizontal beam 43 on both ends Center horizontal beam 5 Deck plate (steel material) )
6 Building floor beams 7 Concrete

Claims (4)

The floor of the elevator car,
It is a reinforcing material that supports the floor plate, and comprises a plurality of floor beams arranged parallel to each other on the lower surface of the floor plate,
Each of the floor beams has a W-shaped cross section, and both end portions of the W-shape are extended outwardly to form horizontal flange portions at both ends, and a central horizontal flange portion is formed at the W-shaped central connecting portion. An elevator car floor, wherein the elevator car floor is coupled to the lower surface of the floor board at at least three locations, the horizontal flanges at both ends and the central horizontal flange. The floor of the elevator car,
A reinforcing material for supporting the floor board, and a plurality of floor beams arranged parallel to each other on the lower surface of the floor board;
Side beams coupled to both ends of each floor beam,
Each of the floor beams has a W-shaped cross section, and both end portions of the W-shape are extended outwardly to form horizontal flange portions at both ends, and a central horizontal flange portion is formed at the W-shaped central connecting portion. An elevator car floor, wherein the elevator car floor is coupled to the lower surface of the floor board at at least three locations, the horizontal flanges at both ends and the central horizontal flange.   The elevator car floor according to claim 1 or 2, wherein the floor beam having a W-shaped cross section has a width dimension of the central horizontal saddle that is at least twice the width dimension of the horizontal saddles at both ends. The elevator according to any one of claims 1 to 3, wherein at least three portions of the both ends of the horizontal beam and the central horizontal beam of each floor beam are coupled to the lower surface of the floor plate by welding. The basket floor.

Images