JPS5913432B2 - Vibration isolation structure for elevator hoisting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vibration isolation structure for an elevator hoisting device, and particularly to a vibration isolation structure for an elevator hoisting device suitable for use in a hoisting machine frame.

1 and 2 schematically show a conventional elevator hoisting device.

A hoisting machine 4 is attached to a hoisting machine pedestal 8 via a vibration isolating rubber 3 to a foundation pedestal 2 buried in a building floor 1.

The conventionally used anti-vibration rubber 3 exhibits soft spring characteristics not only in the up-and-down direction of the car 5 (but also in the direction perpendicular thereto).

Therefore, in the event of an earthquake, the hoisting machine 4 is thicker than the building floor 1 (displaced as shown by the arrow), and this vibration causes damage to the anti-vibration rubber 3, the rope 6 falling away from the sheep 1, and the rope 6
The vibrations cause damage to the car 5, a reduction in riding comfort, etc., and the safety of the elevator has become a problem.

For this reason, the hoisting machine 4 and the building floor 1 are required to have a vibration-proof structure that insulates vibrations from the hoisting machine 4 during normal operation and that displaces the same as the building floor 1 during an earthquake.

In order to deal with this, a conventional structure is shown in FIG. 3.

That is, in the case shown in FIG. 3, a support member 106 is fixed to the building floor 1 on the outside of the base mount 2, and the end side surface 107 of the support member 106 is brought into contact with the hoist mount 8.

The load that occurs during an earthquake is very large, and since the load acts from the tip side surface 107 of a non-structural structure, it is necessary to increase the rigidity of the supporting member 106, and the accompanying construction work will be very difficult. Therefore, especially when applied to the existing hoisting machine 4, it was necessary to ensure sufficient strength in fixing the support member 106.

SUMMARY OF THE INVENTION An object of the present invention is to provide a vibration isolator for an elevator hoisting machine that overcomes the drawbacks of the prior art described above, has a simple structure, and can improve earthquake resistance.

The present invention is characterized by a building floor, at least two beam-shaped foundation stands buried in the building floor at a predetermined interval, vibration-proof rubber provided on the top of these foundation stands, and each of these foundation stands. There are two beam-shaped hoisting machine frames installed on the top of the vibration-proof rubber, and the hoisting machine is installed astride these two hoisting frames to raise and lower the elevator car via a rope. A reinforcing stand spanning the two foundation stands is installed between the foundation stand and the hoisting machine stand; An object of the present invention is to provide a vibration-proof structure for an elevator hoisting device in which a supporting column is installed.

Hereinafter, one embodiment of the present invention will be described in detail with reference to FIGS. 4, 5, and 6.

Two hoisting machine frames 8 are bolted to a base frame 2 buried in a building floor 1 via a plurality of vibration-proof rubbers 3.

A reinforcing stand 9 is inserted into the gap between the foundation pedestal 2 and the hoisting machine pedestal 8 formed by the anti-vibration rubber 3, and is fixed across the two foundation pedestals 2.

A support 10 is erected and fixed to the reinforcing stand 9 between the two hoisting machine frames 8.

A small gap 12 is provided between the support column 10 and the inner wall 11 of the hoisting machine frame.

The vibrations from the hoisting machine that occur during normal operation of the elevator are minute, and the hoisting machine frame 8 does not come into contact with the support column 10 (vibrates).

The vibration isolating rubber 3 prevents this vibration from propagating to the building floor 1.

During an earthquake, the hoisting machine pedestal 8 is largely displaced in the direction shown by the arrow in Figure 6 (horizontal to the building floor 1), but due to the contact between the support 10 and the hoisting machine pedestal 8, the hoisting machine pedestal 8 is Relative displacement with the building floor 1 is restricted within the range of the gap 12 provided, so damage caused by large displacement of the vibration isolating rubber 3, and building floor 1 caused by this damage.
This eliminates problems such as separation from the hoisting machine frame 8 and the rope 6 coming off the sheave 7, and improves earthquake resistance.

Furthermore, the present invention can provide a vibration isolating device for improving earthquake resistance that is simple in structure and easy to expand, since it is only necessary to provide the reinforcing stand 9 and the support column 10 to the conventional device.

Moreover, since the support 10 is simply added to the existing elevator, it can be easily and inexpensively handled without changing the design.

Next, another embodiment of the present invention will be described with reference to FIGS. 1 and 8.

FIG. 1 shows a gap 12 between the support column 10 and the inner wall 11 of the hoisting machine frame.
A cushioning material 13 such as anti-vibration rubber is provided on the holder, and this cushioning material 13 can prevent collision between the hoisting machine frame 8 and the support column 10 and provide damping.

The cushioning material 13 provided on the support column 10 is arranged in a direction parallel to the building floor 1 of the hoisting machine pedestal 8 so that the upper part 14 and the lower part 15 or the entire surface of the inner wall of the hoisting machine pedestal are in contact with each other. It is designed to restrain not only displacement but also rocking movement as shown by the arrow in FIG.

FIG. 8 shows a case in which a buffer material 13 is provided between the hoisting machine frame 8 and the support column 10, and between the horizontal members 26 provided at both ends of the hoisting machine frame 8 and the support column 10. This restricts the entire displacement of the machine mount 8 in the direction parallel to the building floor.

As described above, according to the present invention, the structure is simple and the earthquake resistance can be improved.

[Brief explanation of the drawing]

Figure 1 is a front view of a conventional elevator hoisting device, Figure 2 is a side view of Figure 1, Figure 3 is a side view of a conventional vibration isolation structure different from Figure 2, and Figure 4. 5 is a front view of a vibration isolation structure showing one embodiment of the present invention, FIG. 5 is a sectional view taken along line II in FIG. 4, and FIG.
The figure is a plan view of FIG. 4, FIG. 1 is a sectional view of a vibration isolation structure showing another embodiment of the present invention, and FIG. 8 is a plan view of a vibration isolation structure showing still another embodiment of the invention. be. 1... Building floor, 2... Foundation frame, 3... Anti-vibration rubber, 4... Hoisting machine, 5... Car, 6... Rope,
8... Hoisting machine mount, 9... Reinforcement stand, 10... Support column, 11... Inner wall of hoisting machine mount, 12... Gap, 13
...Cushioning material, 16...Horizontal material.

Claims (1)

[Scope of Claims] 1. A building floor, at least two beam-shaped foundation pedestals buried in the building floor at predetermined intervals, vibration-proof rubber provided on top of these foundation pedestals, and each of these. There are two beam-shaped hoisting machine frames installed above the anti-vibration rubber, and a hoisting machine installed across these two hoisting machine frames to raise and lower the elevator car via a rope. A reinforcing stand spanning the two foundation stands is installed between the foundation stand and the hoisting machine stand, and this reinforcing stand is provided with a reinforcement stand between the two hoisting machine stands. A vibration isolation structure for an elevator hoisting device, characterized in that a support column is installed adjacent to the hoisting machine.2. A vibration isolation structure for an elevator hoisting device according to scope 1.