JPS6251868B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an elevator system that uses a rail with a groove-shaped cross section formed by bending a steel plate and has an elevating body guided by the rail.

Guide rails are provided on the walls of the hoistway to guide the elevator as it moves up and down.

In order to make this guide rail lightweight, material-saving, and inexpensive, it has been proposed to use a groove-shaped rail made of bent steel plate and open on one side.

Although these steel plate rails are superior in terms of weight reduction and material saving as mentioned above, their strength is weaker than the rails used up until now, so there are strength issues during emergency stop operation. I had to consider this.

In other words, when an emergency stop device is applied to a steel plate grooved rail, as shown in Utility Model Publication No. 53-147077, which clamps only one side of the grooved rail using a guide roller and a wedge, As shown in Figure 1, bending stress occurs in the cross section of the rail, causing the rail to deform. As a result, the running of the car becomes unstable, and due to the unstable running, there is a possibility that a proper wedge action cannot be maintained and a sufficient emergency stop cannot be performed.

This invention provides an emergency stop device for steel plate groove rails that overcomes the strength weaknesses of steel plate groove rails and prevents bending stress in the cross-sectional direction from occurring in the rail even in an emergency. We aim to provide the following.

The present invention is characterized by an emergency stop device having a clamp indenter which is provided on the elevating body and operates when necessary to clamp the outer surface of the groove side walls on both sides of the rail, and an emergency stop device which is provided on the elevating body and has a clamp indenter that operates when necessary to clamp the outer surface of the groove side walls on both sides of the rail. The core body is disposed in a movably fitted state within the groove, and both sides thereof are respectively provided with a clamp indenter and a core body facing each other through the groove side walls.

An embodiment of the present invention will be described below with reference to FIGS. 2 to 4.

In the figure, 1 is an elevator hoistway wall, 2 is a bracket fixed thereto, and 3 is a rail having a groove-shaped cross section, which is fixed to the bracket 2 via the bottom outer surface of the groove 3a. 3b is a side wall of the groove 3a, 4 is an elevating body consisting of a car that engages with the rail 3 and moves up and down, 5 is an emergency stop device forming a part of this, 5
Reference numeral a designates a clamp indenter of the emergency stop device 5 that operates when necessary to clamp the outer surface of the side wall 3b. Reference numeral 6 denotes a core body protruding from the elevating body 4 and disposed within the groove 3a of the rail 3. As shown in FIG. A slight gap is formed between the inner surface of 3a and the inner surface.

In the above configuration, under normal conditions,
The clamp indenters 5a, 5a and the core body 6 move in a non-contact state with respect to the rail 3 through a slight gap when the elevating body 4 moves up and down.

On the other hand, in an emergency state, the emergency stop device 5 operates, and the clamp indenters 5a, 5a are attached to the side wall 3 of the rail 3.
Clamp b and 3b from both sides. Therefore, equal clamping pressure is applied to the rail 3 from the left and right sides, and the bending stress shown in Fig. 1 is not generated.
In addition to being able to maintain stable movement of the elevating body 4,
The emergency stop device 5 is also properly clamped by the stable movement of the elevating body 4, and sufficient braking action can be performed.

Moreover, in this invention, since the core body 6 is inserted inside the rail 3, the clamp indenters 5a, 5a
Even if the rail 3 is clamped from both sides by the rails, the deformation of the side walls 3b, 3b is limited, preventing abnormal deformation of the side walls 3b, 3b, and establishing proper braking action of the emergency stop device. is possible.

Therefore, it is possible to use the lightweight and simply constructed rail 3, thereby achieving material savings, and obtaining an elevator system that is inexpensive and can reduce installation costs.

5 and 6 respectively show other embodiments of the present invention. In the figures, the same reference numerals as in FIGS. 2 to 4 indicate corresponding parts, and 6 in FIG. 5 is a porous material such as cast iron. 6 in Fig. 6
is a core made of a metal surface coated with a polymeric material 6a such as urethane.

That is, in both FIGS. 5 and 6, the core body 6 is a guiding tool disposed within the groove 3a of the rail 3, whereby the elevating body 4 is engaged with the rail 3 and guided. Ru. Therefore, although a detailed explanation is omitted, FIGS. 2 to 4 also apply to these embodiments.
It is clear that a similar effect to the illustrated embodiment can be obtained. Furthermore, in the embodiments shown in FIGS. 5 and 6, the actual guide tool can be omitted, thereby reducing manufacturing costs. Further, in the embodiment shown in FIG. 6, since the polymer material 6a is coated on the surface of the core body 6, the sliding noise with the rail 3 can be reduced.

As explained above, the present invention provides an elevator system that uses a grooved rail formed by bending a steel plate, in which an emergency stop device having a clamping indenter that clamps the outer surface of the groove side walls on both sides of the rail is provided on the elevating body. A core body that protrudes from the body and is movably disposed within the groove, with both sides facing the clamp indenter through the groove side walls, or a core body that also serves as a guide tool that engages with the rail groove. When the emergency stop device is in operation, the core is clamped by the clamp indenter together with the groove side walls on both sides, and braking force is applied to both groove side walls, thereby reducing the lateral deformation and cross section of the rail when the emergency stop device is in operation. This prevents both the deformation of the rail and the normal braking action of the emergency stop device. This makes it possible to use lightweight and simple rails, thereby achieving material savings, achieving an inexpensive elevator system that can reduce installation costs.

[Brief explanation of the drawing]

FIG. 1 is an elevational view of a main part showing a deformed state of a rail in a conventional elevator system, FIG. 2 is a plan view of an elevator system according to the present invention, and FIG. 3 is an enlarged view of a main part of an elevator system according to the present invention. 4 is a front view of FIG. 3, and FIGS. 5 and 6 are views corresponding to FIG. 3 showing other embodiments of the elevator system according to the present invention. 3 is a rail, 3a is a groove, 3b is a side wall, 4 is an elevating body, 5 is an emergency stop device, 5a is a clamp indenter, and 6 is a core body. In addition, the same parts or corresponding parts in the figures are indicated by the same reference numerals.

Claims (1)

[Scope of Claims] 1. A guide rail formed into a groove shape with one side open by bending a steel plate is engaged with the steel plate groove-shaped rail in an elevator system installed vertically in a hoistway. an emergency stop device having a clamp indenter that is provided on the elevating body that moves up and down and operates when required to clamp the outer surface of the groove side walls on both sides of the rail; and an emergency stop device that is provided on the elevating body and is movable into the groove of the rail. An elevator apparatus comprising: a core body which is disposed in a fitted state with the core body and has both side faces facing the clamping indenter through the groove side wall. 2. Claim 1, characterized in that the core body consists of a guide tool that engages with the groove of the rail.
Elevator equipment as described in section.