JPS60202067A - Guide rail for elevator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a guide rail for an elevator and, more particularly, to a guide rail for an elevator that aims to eliminate insufficient strength and reduce costs.

[Background of the invention]

First, a conventional guide rail for an elevator and its processing method will be explained with reference to the drawings.

FIG. 1 is a perspective view of a conventional guide rail for an elevator (1), and FIG. 2 is a perspective view of another conventional example of a guide rail for an elevator.

The elevator guide rail 1 shown in Fig. 1 is made of hoop material.
■Forming with rolls, that is, roll forming→■
It is produced continuously through the following processing steps: cutting to length (cutting to a length of about 5'm) → drilling the end hole 1a. Moreover, the processing speed of the roll forming machine used for the roll forming is about 30 m 2 /mm, which is much faster than the Punna processing machine described later.

In addition, the material cost is 10% lower than that of hot-rolled rails, which will be described later.
~15% cheaper.

However, the shape of this elevator guide rail 1 is such that the central portion of the guide portion 1b that guides the elevator is hollow.

As is clear from Fig. 1, since the elevator is an elevator (not shown), the force P from the lateral direction is generated when an emergency situation occurs during use and an emergency stop operation of the elevator 55 or exit occurs. However, the strength is low, there is a risk of deformation, etc., and the conditions of use are limited.

Incidentally, the connection between the guide rails 1 for an elevator is performed by using a ready-made connector (not shown) using the rising end υ1d.

On the other hand, the elevator guide rail 2 shown in FIG.
Unlike the one described in FIG. 1, the guide portion 2b has a solid cross-sectional shape and has sufficient strength against the lateral force P that acts during an emergency stop operation during use.

However, the material of this elevator guide rail 2 is
Because it uses hot-rolled rails with a special shape, the material has bends, warps, and twists in the longitudinal direction.

Therefore, correction work is required to correct and straighten each of these. After this straightening work, since the surface is rough, the guide portion 2b (three sides) must also be planarized using a planer processing machine. None of these planar correction operations were necessary in the conventional example shown in FIG.

After the planar processing, the elevator guide rail 2 (
The length of one piece is approximately 5 m.In order to smooth the connection of the opening, a guide protrusion 2c is provided on the end face, or a groove (not shown) that fits therein is milled, and then the end hole 2a is milled.
The guide rail 2 for an elevator shown in FIG. 2 is machined in the machining step of drilling.

As described above, the processing method for the guide rail 2 for an elevator according to FIG. It requires straightening work and planar processing, which were not required in the first processing method, and the processing speed of the planar processing machine is also much slower than the roll forming machine.
This results in poor productivity. Furthermore, since the planar processing machine is large-sized, the cost of the equipment is high, the yield of material is poor due to the amount of cutting, and it takes time and effort to dispose of chips. Therefore, although the guide rail 2 for an elevator according to FIG. 2 solves the lack of strength because the guide part 2b has a solid structure, the guide rail 2 for an elevator according to FIG.
The disadvantage was that it was about 1.5 times more expensive than the original.

[Object of the Invention] The present invention solves the drawbacks such as insufficient strength and high processing costs caused by the hollow structure of the conventional guide rail for elevators, and provides an inexpensive, high-strength guide rail with excellent productivity. Its purpose is to provide a guide rail for elevators.

[Summary of the invention]

The structure of the guide rail for an elevator according to the present invention includes: a flange portion formed by dividing the plate thickness into two from the i-direction longitudinal edge of a continuous steel strip toward the opposing longitudinal edge; The guide portion has the same plate thickness as , and has an inverted T-shape in cross section.

[Embodiments of the invention]

Embodiments of the present invention, along with processing methods thereof, will be described below with reference to the drawings.

FIG. 3 is a perspective view showing a guide rail for an elevator according to an embodiment of the present invention, and FIG. 4 is a schematic diagram showing an example of a guide rail forming apparatus for processing the guide rail for an elevator according to FIG. 3. The illustration, FIG. 5, shows the slitter in FIG. 4,
6 is an enlarged side view showing the main parts of the roll forming machine in FIG. 4, and FIG. 7 is a sectional view of each row in FIG. 6. FIG. 3 is a front sectional view showing the process of forming the flange portion using the rolls of FIG.

In FIG. 3, 7 is a continuous steel strip having a thickness T0 and a predetermined width B, and 7a is this steel strip 7.
One longitudinal edge, 7b, is the opposite longitudinal edge.

The guide rail 3 for an elevator according to this embodiment is constructed from one longitudinal edge 7a of this continuous strip-shaped steel plate 7 to an opposing longitudinal edge 7a.
A flange portion 5 formed by dividing the plate thickness T0 into two toward b
and the plate thickness T of the strip steel plate 7.

The guide portion 4 remains as it is, and its cross section forms an inverted T-shape. Further, 5a is an end hole bored in the flange portion 5, and 4a is a guide protrusion provided in the guide portion 4.

An example of a guide rail forming apparatus for processing the elevator guide rail 3 configured as described above will be explained using FIG. 4.

In this FIG. 4, 8 is a belt-shaped steel plate 7 (see FIG. 3) cut to a predetermined width B and having a thickness T0.
An uncoiler that can feed this, 9 is a guide roll 9a and a metal saw.

In order to pass the strip steel plate 7 between the strip steel plate 7 and the steel strip 9b, the slit 6 that divides the plate thickness T0 into two is continuously cut from one longitudinal edge 7a of the strip steel plate 7 to the opposite longitudinal edge 7b using a metal saw 9b. (see FIG. 5) and process it into a slit plate 15 using a slitter, l.

The slits 6 of this slit plate material 15 are pushed out to both sides and the flange portion 5 is continuously bent and formed, as shown in FIG.
5 rows of upper and lower o-rules 13a, 14a; 13b, '14b; 13G, 14C for molding the molded product 16 to be broken into e)
;13d,,14d;13e.

Roll forming i, '1'lH1 with 14e
The molded product 1 moves in synchronization with the molding speed of the molded product 16.
A cutting machine 12 is equipped with a high-speed rotating metal saw (not shown) that cuts the molded product 6 into a predetermined length of 5 m), and a removal device 12 takes out the cut molded product 16 from the processing line.

In this way, in the guide rail forming apparatus constructed as shown in FIG.
is a predetermined slit depth b that divides the plate thickness T0 into two from one longitudinal edge 7a to the opposite longitudinal edge 7b by a metal saw 9b rotating in the direction of arrow 17 while being guided by a guide roller 9a. The slits 6 are continuously made and processed into a slit plate material 15 having the cross-sectional shape shown in FIG. 7(a). This plate material 15 with slits is
Upper and lower rolls 13 of the first row of roll forming machine 1o
a, 14a. Then, by the second row of upper and lower rolls 13b and 14b, the state shown in FIG. 7(b) is achieved.
3rd row, upper, lower exit - 13c.

14C, the slit portions are successively expanded to both sides to the state shown in FIG. 7(C), and the upper and lower rows 13e,
1.4e, an inverted T-shaped molded product 16 with a bent flange portion 5 as shown in FIG. 7(e) is formed.

The molded product 16 after roll forming is cut by a high-speed metal saw (not shown, with a predetermined length of 5 m) of the cutting machine 11, and taken out from the processing line by the removal device 12.
Thereafter, the guide projection 4a is milled and the end hole 5a
is drilled to obtain the elevator guide rail 3 having the guide portion 4 having a solid cross-sectional shape as shown in FIG. 3 described above.

According to the embodiment described above, since the guide portion 4 has a solid structure, the lack of strength, which was a drawback of the conventional guide rail 1 for an elevator (FIG. 1) formed by bending a plate, can be solved. Also, compared to the guide rail 2 for an elevator according to FIG.
■The material (belt-shaped steel plate 7) can be a widely used steel plate cut to a predetermined width B, so the material cost is lower than using hot-rolled rails; There is no need for straightening work or planar processing of the guide section 4, and the processing speed of the roll forming machine 10 is extremely fast compared to the planar processing machine (used for forming the guide rail 1 for the elevator shown in Fig. 1 above). [Processing speed equivalent to that of a roll forming machine], so the processing cost is low.
Moreover, it has the effect of being excellent in productivity.

FIG. 8 is a sectional view showing a guide rail for an elevator according to another embodiment of the present invention.

This elevator guide rail 3A is made by continuously forming slits 6 in a strip steel plate 7 using a slitter 9, and then forming the slit portions using a roll forming machine 10 in the same manner as the elevator guide rail 3 shown in FIG. Although the flange portion 5A is bent and formed by spreading it out to both sides, another row of rolls (not shown) is arranged after the rolls 13e and 14e, and by the rolls,
A bent portion 5b is formed by bending the tip of the flange upward.

By bending the flange tip in this way, ■ The flatness of the bottom of the elevator guide rail 3A is further improved, making it extremely easy to attach it to a wall (not shown); This has the effect of improving the rigidity of the guide rail 3A.

In this embodiment, the tip of the flange is bent upward, but it may be bent downward or may be formed rounded.

〔Effect of the invention〕

As explained in detail above, the present invention solves the drawbacks such as insufficient strength and high processing costs caused by the hollow structure of the conventional guide rail for elevators, and is inexpensive, strong, and highly productive. It is possible to provide an excellent guide rail for an elevator.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a conventional example of a guide rail for an elevator, FIG. 2 is a perspective view showing another conventional example of a guide rail for an elevator, and FIG. 3 is an elevator according to an embodiment of the present invention. FIG. 4 is a schematic diagram showing an example of a guide rail forming apparatus for processing the guide rail for an elevator according to FIG. 3, and FIG. 5 is a perspective view showing the slitter in FIG. , FIG. 6 is an enlarged side view showing the main parts of the roll forming machine in FIG. 4, and FIG.
FIG. 6 is a front sectional view showing the forming process of the flange portion by each row of rolls, and FIG. 8 is a sectional view showing a guide rail for an elevator according to another embodiment of the present invention. 3.3A...Elevator guide rail, 4...Guiding part, 5.5A...Flange part, 7...Strip steel plate, 7a
... One longitudinal edge, 7b... Opposing longitudinal edge,
T O... 10th tL 蓼2 fig.#3 詆婆+圀q 0 th

Claims (1)

[Claims] 1. 7222 parts formed by dividing the plate thickness into two from one longitudinal edge of a continuous strip-shaped steel plate toward the opposite longitudinal edge;
A guide rail for an elevator, characterized in that the guide rail has a guide portion having the same plate thickness as the strip steel plate, and has an inverted T-shape in cross section.