JPH0317756B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an elevator hoisting machine, and particularly aims to improve workability when replacing an existing elevator hoisting machine with a different type of hoisting machine, and improve seismic resistance. The present invention relates to a support structure for a hoisting machine suitable for.

In recent years, the number of existing elevators that are more than ten years old is increasing, and these products are becoming less reliable, and maintenance work often requires a great deal of cost and time. Performance is also inferior compared to current ones. Therefore, we replaced the elevator equipment with the current one to improve its performance.
Demand for modernization that improves reliability is increasing. Against this background, the existing elevator machine room was constructed by passing between the support beams 2a and 2b of the elevator machine room 1, as shown in Figure 1.
A hoist 4a is installed on the machine beam 3a. Usually the machine beam 3a is fixed to the floor 5,
In addition, the surrounding area is hardened with cinder concrete 6 to finish the floor. Now, if you are going to replace the hoist with a different model for some reason, due to the difference in installation dimensions between the conventional model and the replacement model, remove the machine beam 3a and install it on the new machine as shown in Figure 2. A beam 3b was constructed and a new hoist 4b was installed on top of it. For this reason, in order to remove the existing machine beam 3a and construct the new machine beam 3b, the cylinder concrete was shaved,
Backfilling work was required, which generated vibrations and noise, as well as poor workability. Since these works are carried out in existing buildings, the buildings are often used during the construction work. Therefore, the construction work must be done in a short period of time, and vibration and noise must be avoided as much as possible. According to the law, working hours may be restricted,
In some cases, construction was impossible, and the construction period was long.

In addition, the existing machine beam 3a and the new hoisting machine 4
Even if it is possible to install the machine beam 3a due to its dimensions, the existing machine beam 3a may not be securely fixed to the floor due to old construction, and there is a drawback that the hoisting machine may fall over during an earthquake. Ta.

The purpose of the present invention is to reduce the working time, generated vibration and noise when replacing an existing elevator hoisting machine with a different type of hoisting machine, and also to improve the earthquake resistance of the hoisting machine and suppress the generated vibration noise. The object of the present invention is to provide a support structure for a hoisting machine that makes it possible.

The key point of the present invention is to utilize the existing machine beams and pass a transverse beam between the beams so that a new machine beam can be installed on top of the transverse beams.

An embodiment of the present invention will be described with reference to FIGS. 3 and 4.

A plurality of existing machine beams 3a are straddled between the support beams 2a and 2b of the elevator machine room 1, and a new machine beam is installed on top of these via a horizontal beam S at a position facing the support beams 2a and 2b. 3b, and a hoisting machine 4a is further installed thereon.

The support structure of the hoist will be explained. On the existing machine beam 3a, a plurality of horizontal beams S are welded and connected in parallel to the support beams 2a and 2b, and a support base 8 placed outside the existing machine beam 3a is welded to both ends of the horizontal beam S. Furthermore, the support base 8 is welded to a fixture 9 that is fixed to the building floor with an anchor bolt 10. The support base 8 may be anchored directly to the floor, but in many cases existing machine beams have a dispi 11 inserted under the beam to ensure levelness, so the height can be easily adjusted in that case as well. It was made so that it could be done. of course,
The horizontal beam, support base, and fixing fittings may be fixed using bolts. According to this structure, the existing machine beam remains as it is, so there is no need to remove the existing machine beam and cut cinder concrete to install a new machine beam, only cutting a small area of the support base and fixing metal parts. This reduces work time and reduces vibration and noise during work. The length of the horizontal beam S should be longer than the interval l between the newly installed machine beams 3b, but by making this length sufficient, the restoring moment of the hoisting machine when it falls over during an earthquake will be large, and the earthquake resistance will be improved. Leads to improvement. Also, fixing metal fittings 9
A similar effect can be obtained by increasing the number of anchor bolts. Fixing of existing machine beam is uncertain.
Or, even if it is not fixed yet, by fixing the fixing fittings with anchor bolts, sufficient seismic performance can be obtained despite the existing condition. Moreover, the vertical load can be Since it is distributed over the existing machine beam 3a, the strength of the horizontal beam S can be small. A new machine beam 3b is welded or bolted onto the horizontal beam S, and a hoist 4b is installed thereon. Since the horizontal beam S is placed on a support beam with high impedance, the mechanical and electrical vibrations of the hoisting machine are not directly transmitted to the low impedance floor, preventing vibration propagation to the building and generation of noise. It also has the effect of

FIG. 5 shows another embodiment of the present invention, which differs from FIGS. 3 and 4 in that a vibration isolating rubber 7 is interposed between the horizontal beam S and the newly installed machine beam 3b. According to this structure, it is possible to further prevent vibration noise from propagating to the building, and furthermore, the vibration isolating rubber 7
If the steady rest 12 is provided near the earthquake resistance can be further improved.

According to the present invention, a new hoisting machine can be installed without removing the existing machine beam, so the work time and the generation of vibration and noise due to construction can be greatly reduced. Since the end portion is fixed to the support beam on the outside of the existing machine beam, it is possible to create a hoist support structure that is highly earthquake resistant and generates less noise.

[Brief explanation of the drawing]

Fig. 1 is a diagram of the conventional hoisting machine support structure, Fig. 2 is a diagram of the hoisting machine support structure in which the existing machine beam is removed and a new hoisting machine is installed, and Fig. 3 is a diagram of the hoisting machine support according to the present invention. A front view of one embodiment of the structure, FIG.
FIG. 5 is a side view of another embodiment of the present invention. 4b...Hoisting machine, 3a...Existing machine beam, 3b
…New machine beam, 8…Support stand, 9…Fixing bracket, S…Horizontal beam.

Claims (1)

[Claims] 1. A plurality of existing machine beams installed across the support beams on the elevator machine room floor, a plurality of horizontal beams installed across the existing machine beams at positions opposite to the support beams, and A new machine beam installed on the horizontal beam, a drive device installed on the new machine beam, and a fixture for fixing the horizontal beam on the support beam of the elevator machine room floor outside the existing machine beam. A support structure for an elevator hoisting machine.