JPS6032052Y2 - Elevator hoisting machine device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a hoisting machine device for an elevator.

First, 1. A conventional elevator hoisting machine device will be explained with reference to FIG.

In the figure, 1 is the machine room of the elevator, 2 is the frame made up of the walls thereof, 3 is the support base fixed to the frame 2 with anchor bolts 4, and 5 is the vibration-proof rubber installed on top of this. A vibration isolator, 6 is a machine stand made of a beam with a cross-sectional shape and mounted on the vibration isolator 5, 7 is a hoisting machine supported by this and has a drive mesh wheel 8, and 9 is a support stand. The floor of the machine room 1 is made of steel plates and is constructed below 3, and 10 is an elevator main rope that is wrapped around a drive sheave 8 and passes through the floor 9, with a car 11 at one end and a counterbalance at the other end. A weight 12 is connected.

That is, the hoisting machine 7 is vibration-proofly supported by the vibration isolator 5 via the machine stand 6, so that the vibrations of the hoisting machine 7 are not transmitted to the rooms of the building through the machine room 1.

However, in the event of an earthquake, an upward load Q is generated on the machine platform 6 due to its horizontal movement as described below.

That is, as shown in FIG. 2, F horizontal force W of the earthquake
Distance P from the center of gravity of the hoisting machine 7 to the center of gravity of the hoisting machine 7 Suspended load of the car 11, etc. C Interval between the machine bases 6 B Distance from the machine base 6 on one side to the center of gravity of the hoisting machine 7 A From the machine base 6 on one side to the suspended load point When the distance to
acts.

For this reason, it is conceivable that the vibration isolator 5 may break during an earthquake and the hoisting machine 7 may fall.

This invention solves the above-mentioned drawbacks and is intended to provide an elevator hoisting machine that is free from accidents caused by lifting of the machine platform during an earthquake.

Below, 3rd. An embodiment of this invention will be explained with reference to FIG.

In the figure, 1st. The same reference numerals as in FIG. 2 indicate corresponding parts, 13 is a recess provided in the body 2, 3 is a support stand installed on the bottom of this, and 14 is a recess partially fixed to the body 2. A blocking body is disposed on the upper edge of the machine 13, and the other part is a blocking body that faces the upper surface of the machine table 6 extending downwardly, with a gap in between.

That is, when an upward load is applied to the machine platform 6 due to an earthquake, upward displacement of the machine platform 6 is prevented by the blocking body 14 at a predetermined position.

Therefore, it is possible to prevent the hoisting machine 7 from falling over.

In order to prevent the hoisting machine 7 from overturning, it is conceivable to provide a mechanism for preventing displacement of the machine stand 6 between the support stand 3 and the machine stand 6.

However, in order to provide such a mechanism, a special space must be provided between the support base 3 and the machine base 6 for the mechanism.

Therefore, the position of the machine stand 6 has to be raised, and even if the machine room is small (for example, the ceiling height is 2 m), the entire hoisting machine cannot be installed properly in the machine room. Since this invention does not use such a mechanism, it can be easily installed even in a small machine room.

Moreover, in this invention, since the blocking body 14 is fixed to the frame 2 of the machine room 1, it can also be installed in an existing hoisting device.

Furthermore, as mentioned above, since the installation position of the machine stand will not be high, the recess 13 to be bored in the frame 2 can also be small.
Therefore, the decrease in strength of the frame 2 can be minimized as much as possible.

5 to 7 respectively show other embodiments of this invention. The same symbols as in Fig. 4 indicate corresponding parts,
In Fig. 5, 15 is a vibration isolator interposed between the blocking body 14 and the machine stand 6. In Fig. 6, 9 is a frame consisting of the floor of the machine room 1, and 14 is partially fixed to this. The other part is a blocking body that faces the recess in the side surface of the machine stand 6 in a loosely fitted state, and in FIG. This is a blocker that loosely fits into the provided hole.

That is, in the embodiments shown in FIGS. 5 to 7, a blocking body 14 is provided to prevent the upward displacement of the machine platform 6 at a predetermined position, so a detailed explanation will be omitted. Fourth
It is clear that a similar effect to the illustrated embodiment can be obtained.

Note that in the embodiment shown in FIG.
The inhibitory effect in 6th. In the embodiment shown in FIG. 7, the blocking body 14 also prevents excessive displacement of the machine platform 6 in the horizontal direction. It is blocked by the blocker 14a.

As explained above, this invention is equipped with a blocking body that is fixed to the frame of the machine room and prevents at least the upward displacement of the machine platform at a predetermined position, so that the upward load acting on the machine platform due to the horizontal movement of an earthquake can be prevented. The purpose of the present invention is to realize an elevator hoisting machine device that can prevent the machine platform from floating up, and has a simple configuration that is highly safe in the event of an earthquake.

Furthermore, this idea has an extremely simple structure in which the blocking body is fixed to the frame of the machine room and a part of it faces the machine stand, so it can be easily installed even with an existing hoisting device. .

[Brief explanation of the drawing]

Fig. 1 is a conceptual diagram of an elevator machine room showing a conventional elevator hoisting machine, Fig. 2 is a vertical sectional view of the main part of Fig. 1, and Fig. 3 is an illustration of an elevator hoisting machine according to this invention. 1, FIG. 4 is a right side view of FIG. 3, and FIGS. 5 to 7 are diagrams showing an example of an elevator hoisting machine according to this invention. In the figure showing an example of
5 and 7 are views corresponding to FIG. 3, and FIG. 6 is a view corresponding to FIG. 4. 1...Machine room, 2...Structure, 3...
...Support stand, 5...Vibration isolator, 6...
Machine platform, 7...Hoisting machine, 14...Blocker, and the same or equivalent parts in the drawings are indicated by the same reference numerals.

Claims (1)

[Scope of utility model registration request] A support stand provided in the machine room, a machine stand supported on this support stand via a vibration isolator, a hoist supported on this machine stand, and a part fixed to the frame of the machine room. and another part faces the part of the machine base from above and through a gap to prevent the vibration isolator from breaking due to at least upward displacement of the machine base. and a blocking body for blocking at least upward displacement of the machine platform at a predetermined position.