JPS5825634B2 - elevator touch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an elevator system in which a counterweight balanced with the weight of a passenger corner is prevented from falling off the rail due to shaking such as an earthquake.

Figures 1a, b, and c are views showing an example of a conventional device of this type, and Figure 1a is a side sectional view, and Figure 1a is taken along line bb of Figure 1a.
1C is a view taken along line c-c in FIG. 1.

In the figure, 1 is a hoisting machine installed on the roof of the hoistway 2 and driven by a lifting drive mechanism (not shown), 3 is a main yaw suspended from the hoisting machine 1, and 4 is suspended from one end of the main rope 3. The car is guided along the elevator track by car guide rails 5.

A counterweight 6 is suspended from the other end of the main rope 3 and guided along a lifting track by a weight guide rail 7.

As shown in Figures 1 and 3, this counterweight 6 has a guide shoe 8 having a U-shaped cross section projecting from its upper and lower ends, and this guide shoe 8 is vertically disposed facing and parallel to the hoistway 2. It is made to slide in contact with the weight guide rail 7 and guide the elevator track.

Note that 9 is a bracket that supports the weight guide rail 7, and 10 is a joint plate that reinforces the connection portion of the weight guide rail 7.

By the way, as shown in the front view in FIG. 2A and the side view in FIG. The flat weights 12 are stacked and fitted.

Since this counterweight 6 must balance the weight of the rider 4, the weight 12 is tilted (
The weight frame 11 can be easily attached/detached by being removed from the groove of the weight frame 11 (dotted chain line shown in FIG. 2a), thereby making it possible to adjust its weight.

Therefore, in the counterweight 6, the hitch spring 13 supporting the main rope 3 above projects into the frame 11 by an amount of X, and a room Y for tilting the weight 12 is provided, and the weight adjustment range of the counterweight 6 is widened. In order to standardize it, a margin of α is allowed.

Therefore, the weight 12 is in close contact with the bottom side of the weight frame 11, but the weight 12 is in close contact with the top side, which is
There will be a void of y+α.

For this reason, the center of gravity of the counterweight 6 is unevenly located below in the vertical direction.

On the other hand, in such a device, when the counterweight 6 swings due to an earthquake or the like, the weight guide rail 7 moves through the guide shoe 8 as shown by the arrow P1 in FIG. A stress indicated by P2 acts.

However, since the center of gravity of the counterweight 6 is unevenly located below it, the stress P1 acting from the guide shoe 8 above
Compared to this, the stress P2 acting from the lower guide shoe 8 is greater.

For example, if the center of gravity is unevenly distributed downward at a ratio of 624, if the lower guide shoe 8 is located in the middle of the bracket 9 that supports the weight guide rail 7 and the counterweight swings, excessive stress may cause There is a possibility that the rail 7 may be deformed or the guide shoe 8 on the opposite side may come off the rail, resulting in a serious accident.

This invention was made in view of the above circumstances, and the center of gravity of the counterweight is located in the center of the upper and lower guide shoes that guide the counterweight, thereby equalizing the stress acting on the guide rail from the upper and lower guide shoes. The object of the present invention is to provide an elevator device that can prevent rail deformation, rail deformation, and the like.

An embodiment of the present invention will be described below with reference to FIGS. 3a, b, and c.

Fig. 3a is a front view of a counterweight according to an embodiment of the present invention, Fig. 3 is a side view, and Fig. 3C is a plan view of a weight piece. A weight frame 103 is a main rope attached to the upper side of the weight frame 102 via a hitch spring 104, and this main rope 103 is suspended from a hoisting machine (not shown) and attached to a car at the other end. is suspended.

Reference numeral 105 denotes guide shoes provided on both sides and the upper and lower ends of the weight frame 102, and the guide shoes 106 slide in contact with a weight guide rail (not shown) to guide the weight on its elevator path.

Reference numeral 106 denotes a weight that is stacked and fitted in the weight frame 102, and this weight 106 is composed of a plurality of weight pieces 1061, 1062, . . . 106n, and each weight piece shown in FIG. 3C. As shown in the plan view, the width is gradually widened to increase the weight, and ears 107 that fit into the grooves of the weight frame 102 are provided protrudingly on both sides. to tighten them together.

In addition, the above weight element piece 1060.1062...
106n is adjusted so that the weight of the counterweight 101 is balanced with the weight of the seat corner (not shown), and the center of gravity of the counterweight 101 is located at the center of the upper and lower guide shoes 105 (W shown in FIG. 3A).

With such a configuration, the car and the counterweight 101 can be counterbalanced and raised and lowered by a hoisting machine (not shown).

When the counterweight 101 swings due to an earthquake or the like, the stress applied to the weight guide rail from the upper and lower guide shoes 105 of the counterweight 101 is equalized because the center of gravity is located at the center of the upper and lower guide shoes. act.

Therefore, excessive stress is not locally applied to the weight guide rail, preventing deformation of the rail, derailment, etc., and reducing the strength of the rail and rail bracket, thereby reducing costs. be able to.

Note that this invention is not limited to the above embodiment, and in the above embodiment, the weight pieces 1061°, 1062, . . .
...The weight is increased or decreased depending on the width of 106n. For example, as shown in the plan view shown in FIG. 4a and the side view shown in FIG.
...201n has a through hole 202 with different areas in the center
1,202□...202n may be bored to adjust its weight.

Further, as shown in FIG. 5, a piece of wood 203, which is lighter in weight than the weight 106, cut into a predetermined size, for example, is inserted below the weight 106 stacked on the weight frame 102, and the center of gravity of the piece is inserted into the upper and lower guide shoes 105. You can adjust it so that it is centered.

In this case, it goes without saying that the weight of the counterweight 101 as a whole is adjusted to balance the weight of the seat.

As detailed above, in this invention, the center of gravity of the counterweight is located at the center of the upper and lower guide shoes, so that the stress caused by the swinging of the counterweight can be evenly distributed to the weight guide rail. It is possible to provide an elevator system that can prevent deformation of the guide rail, derailment, etc., reduce the strength of the guide rail or rail bracket, and reduce costs.

[Brief explanation of drawings]

Fig. 1 is a diagram showing a conventional elevator system, Fig. 1a is a side sectional view, Fig. 1 is a view taken along line b-b in Fig. 2 is a diagram showing an example of the counterweight of the conventional device described above, FIG. 2 a is a front view, FIG. 2 is a side view, and FIG. Figure 3A is a front view, Figure 3C is a side view, Figure 3C is a plan view of the weight piece, Figure 4A is a diagram showing the counterweight.
b is a plan view and a side view showing a weight element according to another embodiment of the present invention, and FIG. 5 is a front view showing still another embodiment of the present invention. 101... Counterweight, 105...
・Guide shoe.

Claims (1)

[Claims] 1. In an elevator in which a lifting track of a counterweight that balances the weight of the corner of the elevator is guided by guide shoes provided at the upper and lower ends of the counterweight slidingly in contact with the guide rail, the counterweight is composed of a plurality of weight pieces. The weight element is composed of individual weight pieces, each having a different weight, and is characterized in that the weight pieces are combined to set the center of gravity of the counterweight at the center between the guide shoes at the upper and lower ends. elevator equipment.