JPH085190Y2 - Sound absorption duct equipment for elevator machine room - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a sound absorbing duct device provided in a floor hole of an elevator machine room.

(Prior Art) Based on a conventional example shown in FIGS. 5 to 7, a sound absorbing duct device for an elevator machine room will be described.

The main rope 5 wound around the main sheave 3 and the deflecting sheave 4 of the hoisting machine installed on the machine beam 2 in the machine room 1 provided at the upper part of the elevator hoistway, the car 6 and the counterweight 7
Is suspended in the hoistway.

For this reason, the floor 8 of the machine room 1 has a floor hole 9 through which the main rope 5 passes, and the floor hole 9 has a cylindrical backfill iron plate 10 for closing the hole. It is fixed.

By the way, operating noises, electromagnetic noises, etc. generated by the motors in the machine room 1 and the control devices are propagated through the floor holes 9 into the hoistway, which gives offense to passengers in the car and waiting persons at the landing 12.

For this reason, a sound absorbing duct is provided in the floor hole through which the main rope passes.

This sound-absorbing duct is as follows: (1) As shown in FIG.
Instead of the above, a sound absorbing material 13 is attached to the inner surface, a sound absorbing duct 14 also serving as a floor hole closing is installed on the floor 8 and fixed by being backfilled with cinder concrete 11.

(2) As shown in FIG. 7, a cylindrical sound-absorbing duct 14 having a sound-absorbing material 13 attached to the inner surface is fitted to the floor projection of the tubular backfilled iron plate 10, and the flange portion below the sound-absorbing duct 14 is attached. Secure on cinder concrete with tapping screws 15.

 The sound-absorbing duct is provided by such methods.

(Problems to be solved by the invention) Since the sound absorbing material on the inner surface of such a sound absorbing duct is damaged over the years due to hot air in the machine room and adhesion of grease on the main rope, maintenance and inspection are required.

However, since the sound absorbing duct of the above example (1) is fixed to the cinder concrete, it is difficult to inspect and replace the sound absorbing material, and the clearance between the main rope and the sound absorbing material cannot be adjusted.

Further, in the sound absorbing duct of (2), since the distance H between the machine beam and the cinder concrete on the floor is small, it is difficult to attach the tapping screw for fixing the sound absorbing duct, and further, the gap 1 between the main rope and the sound absorbing material is small. For the adjustment, the attachment hole is made a long hole, but there is a problem that the adjustment work requires a great amount of work time.

Therefore, the purpose of the present invention is to make the sound-absorbing duct removable from the cinder concrete surface of the machine room floor so that the sound-absorbing material can be easily inspected and replaced, and the clearance between the main rope and the sound-absorbing material can be easily adjusted. is there.

[Constitution of device]

(Means for Solving the Problems) In order to achieve the above object, the present invention covers a sound absorbing duct on a protruding portion of a cylindrical backfill iron plate for closing a floor hole of a machine room, which is located above a cinder concrete surface.

The sound absorbing duct is divided vertically and fastened with bolts to form a tubular shape, and the sound absorbing material is attached to the inner surface. A screw hole is provided on the side surface of the sound absorbing duct, so that the push screw presses and fixes the side surface of the iron plate.

(Function) The sound absorbing duct device of the present invention can be attached and detached from the cinder concrete on the floor of the machine room when the sound absorbing material is inspected or replaced.
At the same time, the clearance between the main rope and the sound absorbing material can be adjusted and fixed.

Further, when the distance between the machine beam and the cinder concrete is small, the sound absorbing duct can be divided to easily attach and detach.

(Embodiment) A sound absorbing duct device of the present invention will be described based on an embodiment shown in FIGS. 1 to 3.

Square tube (or cylindrical) backfill iron plate for closing the floor hole 9
10 is provided, and the upper part of the backfilled iron plate 10 is projected as a projecting portion 16 above the floor surface of the cinder concrete 11.

The sound absorbing duct 17 is formed by combining two U-shaped divided parts and fastening them with bolts to form a square tube (or cylinder) having a square (or circular) cross section larger than the backfilled iron plate 10, and urethane foam or the like on the inner surface. The sound absorbing material 13 is attached and configured.

The sound absorbing duct 17 is placed on the cinder concrete 11 so as to cover it from the backfilling iron plate 10, and the backing iron plate projecting portion is fixed by a stop member, for example, a push screw 18 from four sides of the sound absorbing duct 17.
16 Press on the side and fix.

With the above configuration, the sound absorbing duct 17 can be attached and detached, and its fixed position can be easily adjusted. Therefore the sound absorbing duct 17
It is easy to inspect and replace the sound absorbing material 13 on the inner surface.
It is also easy to adjust and fix the clearance between the main rope 5 and the main rope 5.

Further, since the structure of the sound absorbing duct 17 is vertically divided into two parts, when the space between the machine beam 2 and the cinder concrete 11 is narrow, the divided parts of the sound absorbing duct 17 should be inserted horizontally into the gaps and assembled with bolts. Therefore, the sound absorbing material 13 can be easily replaced.

 Another embodiment of the present invention will be described with reference to FIG.

A base 19 with the same shape and dimensions as the sound absorbing duct 17 and a flange portion is provided on the upper part as a middle joint, the sound absorbing duct 17 is fastened on this flange, and the backfilled iron plate 10 cannot be pushed from the side surface of the base 19 Fix it.

With the above configuration, if the clearance between the main rope 5 and the sound absorbing material 13 is adjusted first, the adjustment fixing by the push screw 18 becomes unnecessary when the sound absorbing duct 17 is reinstalled after the removal inspection.

[Effect of device]

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to easily inspect and replace the sound absorbing material of the sound absorbing duct on the floor of the elevator machine room, adjust the clearance between the main rope and the sound absorbing material, and improve the sound absorbing effect.

[Brief description of drawings]

1 is a side sectional view of a sound absorbing duct according to the present invention, FIG. 2 is a view taken along the line II-II of FIG. 1, FIG. 3 is a view taken along the line III-III of FIG. 2, and FIG. FIG. 5 is a side sectional view of a sound absorbing duct according to another embodiment, FIG. 5 is a schematic configuration diagram of an elevator, and FIGS. 6 and 7 are side sectional views of a conventional sound absorbing duct. 5: Main rope, 9: Floor hole 10: Cylindrical backfill iron plate 16: Cylindrical backfill iron plate protrusion 13: Sound absorbing material, 14, 17 ... Sound absorbing duct 18: Push screw

Claims (1)

[Scope of utility model registration request] 1. A tubular embedding provided in a floor of a machine room of an elevator and having a floor hole for passing a main rope and a projecting portion provided in the floor hole and projecting above a floor surface of cinder concrete. A return iron plate, a cylindrical sound absorbing duct that is provided on the cinder concrete so as to cover the side surface of the projecting portion, and is vertically separable, and press-fixes the sound absorbing duct and the side surface of the projecting portion, and A sound absorbing duct device for an elevator machine room, comprising a sound absorbing duct and a stop member capable of adjusting a distance between a side surface of the protruding portion.