JPS5854459Y2 - Elevator counterweight mechanism - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a counterweight mechanism for an elevator that ensures the retention of a counterweight.

The structure of a conventional counterweight is described with reference to FIGS. 1 to 3. Inside the pair of left and right guide rails 11A and 11B, there are an upper plate 12A, a lower plate 12B, and left and right U.
Weight frame 12 combined from frame materials 12C and 12D such as shaped steel
is guided by guide rails 11A and 11B by guide shoes 13 attached at four upper and lower positions, and moves up and down.

The weight frame 12 is connected to a car (not shown) by a rope 15 attached to the upper plate 12A via a spring 14.

Therefore, in order to balance the weight of the weight frame 12 under the load condition of the car, each weight frame 12 has a weight of 20 kg.
A plurality of weights 16 weighing 100 kg to 100 kg are stacked.

In order to hold these weights 16, an L-shaped holding plate 17A is provided.
$ and 17B are attached to frame members 12C and 12D by bolts 18 and nuts 19, and a weight 16 is tightened on the lower surface thereof.

However, if the weight frame 12 is subjected to vibration due to vertical movement or horizontal vibration such as an earthquake, the weight 16 will sway laterally and the weight 1
The frame members 12C and 12D spread left and right due to the lateral force of
There was a danger that there would be insufficient repression.

The present invention eliminates the above-mentioned drawbacks, and its purpose is to provide a counterweight mechanism for an elevator that reliably holds the weight in the weight frame.

The details of the present invention will be explained below with reference to FIGS. 4 and 5, which are one embodiment.

Note that the same members as those in the conventional example shown in FIGS. 1 to 3 are given the same reference numerals, detailed explanations are omitted, and only the different parts will be explained.

The left and right frame members 12C and 12D are close to the uppermost weight 16 and have a presser plate 17 attached to the frame members 12C and 12D.
A hole is made at a position above the weight holding part of 17B,
Screw members 21A and 21B are inserted into these holes, and their insertion sides are each fixed by a pair of nuts 22.

On the other side of the screw members 21A and 21B, screws with opposite twisting directions are provided, and a turnbuckle 23 is screwed therein.
The nut 22 constitutes a connecting member.

Then, if you rotate the turnbuckle 23 in the direction of tightening it,
Tension is generated in the connecting members and therefore the frame members 12A and 12
B is given an appropriate inward force in advance.

Therefore, in this counterweight mechanism, the connecting member prevents the left and right frame members 12C and 212D of the weight frame 12 from expanding, and the left and right frame members 12C and 12D are connected to each other by the connecting member above the holding plates 17A and 17B. By being pulled inward, the frame material 12C due to this tensile force
, 12B, the tip sides of the presser plates 17A, 17B are pressed downward, that is, to the uppermost weight 16, so that the weight 16 can be strongly pressed from above.

As described above, the elevator counterweight mechanism of the present invention connects the left and right frame members of the weight frame by a connecting member consisting of a pair of screw members and a turnbuckle above the presser plates respectively attached to the frame members. Since the structure is connected with an inward tensile force applied, even if a lateral load is applied to the weight due to some factor such as an earthquake, the gap between the left and right frame members will not expand. Since it is pulled inward by the connecting member above the holding plate, the holding plate is strongly pressed against the topmost weight due to the bending of the frame material due to this tensile force, so that the weight is not pulled from above by the holding plate. The pressing force is also increased, so that the weight can be securely held in the weight frame.

[Brief explanation of the drawing]

Figures 1 to 3 show a conventional example, where Figure 1 is a side view of the counterbalanced heel, Figure 2 is an enlarged sectional view taken along line 2-2 in Figure 1, and Figure 3 is an enlarged side view of Figure 2. 4 and 5 show an embodiment of the present invention, with FIG. 4 being a side view and FIG. 5 being an enlarged view of the main part of FIG. 4. 12... Weight frame, 12C, 12D... Frame material, 16...
・Weight, 11... Pressing plate, 21... Screw member, 23.
...Turnbuckle.

Claims (1)

[Scope of utility model registration request] A plurality of weights are stacked in a weight frame, the top weight is pressed from above by a pair of presser plates attached to the left and right frame members of the weight frame, and the left and right frame members are connected by a connecting member. In a counterweight mechanism for an elevator that prevents outward expansion, the connecting member is connected to a pair of threaded members with opposite threads connected to the left and right frame members above the presser plate, and both threaded members. A counterweight mechanism for an elevator, characterized in that it is comprised of a turbine buckle that is screwed into the mechanism.