JPH0738303Y2 - Soundproofing 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 soundproofing device for an elevator machine room.

(Prior Art) The soundproofing of a conventional rope floor hole in an elevator machine room will be described with reference to a conventional example shown in FIGS.

In the traction type elevator, a hoisting machine 4 is installed on machine beams 3 and 3 stretched on a floor 2 of a machine room 1 provided at an upper part of a hoistway.

The main sheaves 5 of the hoisting machine 4 and the main ropes 7 wound around the sheaves 6 pass through the floor holes 8 for the main ropes and hang down in the hoistway. There is.

The hoistway is provided with two sets of guide rails 10, 10 for guiding the traveling of the car and the weight respectively from the bottom of the hoistway to the bottom of the machine room floor.

By the way, the hoisting machine for driving the elevator is operated in the machine room 1, and in addition to the magnetic sound and the rotating sound of the hoisting machine 4, operating sounds of devices such as a control panel are generated, and these become noise and become a rope. It propagates through the floor hole 8 for use to the inside of the elevator car in the hoistway and to the elevator hall.

In order to prevent noise from the floor hole 8, a cylindrical sound-absorbing duct 12 having a sound-absorbing material 11 attached to the inner surface is surrounded by the main rope 7 and fixed on the floor 2 with cinder concrete.

This is an improved example (Jitsuko Sho 63-41411) in which the sound absorbing duct 12 with the sound absorbing material 11 is extended from above the floor 2 to the lower end of the floor hole 8.

The sound absorbing material 11 is made of urethane foam or glass wool for the sound absorbing effect, and rubber or the like for the sound insulating effect.

(Problems to be solved by the invention) Urethane foam products, glass wool, rubber, etc. used for sound absorbing materials have low resistance to the rope grease applied to the main rope and are easily deteriorated. It is essential.

However, as described above, the soundproofing device installed in the machine room of the elevator has the sound absorbing duct provided on the floor of the machine room, and the machine beam and the deflecting sheaves around the sound absorbing duct. In this case, the worker must go under the machine beam and work in a narrow space, and since the sound absorbing duct is fixed with cinder concrete, replacement work is difficult and inefficient work. It is said.

[Constitution of device]

(Means for Solving the Problem) In order to solve the above-mentioned problems, the present invention has a structure in which a soundproofing device is mounted outside a machine room floor hole, that is, on a bracket assembled to a guide rail in the upper part of a hoistway, and The sound-absorbing duct shall be divided into two parts to surround the main ropes and to protect the floor hole from sound.

Such soundproofing devices are attached to the guide rails on both the car side and the counterweight side.

(Operation) Since the sound absorbing device is installed under the floor hole of the machine room, the worker can easily perform the work on the basket for inspection and replacement of the sound absorbing material and replacement of the sound absorbing duct. Further, since the sound absorbing duct is a two-part type, it can be easily attached and detached.

Since the distance from the end of the car 9 to the guide rail on the counterweight side is about 30 to 40 mm, the above work on the counterweight side can be similarly performed on the car 9.

(Embodiment) The present invention will be described based on an embodiment shown in FIGS.

A bracket (14) is fixed to a car-side guide rail (10) with a clip (15) and a bolt (16), and a bracket (17) is horizontally attached to form a U-shaped frame.

The rear sound-absorbing duct 19 with the sound-absorbing material 18 mounted inside is attached to the bracket 17 with bolts. Similarly, the soundproofing device 21 is constructed by connecting the front soundproofing duct 20 having the sound absorbing material 18 inside with 20 bolts and surrounding the rope 7 to assemble it in a tubular shape. The height of the space to the machine room floor is usually about 500 mm to 600 mm, and this length is more than the thickness of the machine room floor of about 150 mm and the distance between the floor and the machine beam is about 300 mm. Since the sound absorbing duct of the present invention is large, a sound absorbing duct longer than the conventional sound absorbing duct can be attached, and the sound absorbing effect is improved.

Further, the sound absorbing duct 21 has a two-part configuration of the rear and front sound absorbing ducts 19 and 20, and the mounting position is the space under the floor 2 of the machine room. Workers can easily and efficiently carry out inspections, replacements, etc. on the cage.

Since the distance from the end of the car 9 to the guide rail 10 on the counterweight side is usually 300 to 400 mm, the sound absorber duct on the counterweight side can also be mounted in the same manner with the same configuration as described above. it can.

As another embodiment, as shown in FIG. 4, the sound absorbing duct 12 of the present invention has the structure of the conventional embodiment shown in FIG. 7 in which the sound absorbing duct 12 extends from the floor 2 through the floor hole 8 and extends below the floor. May be directly connected.

[Effect of device]

According to the present invention, since the soundproofing device is installed in a relatively large space under the floor of the machine room and the sound absorbing duct is divided, the work of mounting, inspecting, replacing, etc. can be easily performed from the top of the car.
Moreover, there is an advantage that a duct having a large sound absorbing effect can be adopted.

[Brief description of drawings]

FIG. 1 is a front sectional view of a soundproofing device 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. 1, and FIG. FIG. 5 is a sectional view of another embodiment of the invention, FIG. 5 is a schematic diagram of an elevator, FIG. 6 is a detailed view of essential parts of FIG. 5, and FIG. 7 is a sectional view of another conventional embodiment. 1 ... Machine room, 7 ... Main rope 8 ... Main rope floor hole, 9, 10 ... Guide rail 12 ... Sound absorbing duct, 21 ... Soundproof device

Claims (1)

[Scope of utility model registration request] 1. Located below the floor hole for the main rope in the machine room,
A sound absorbing duct surrounding the main rope hanging from the floor hole,
A soundproof device for an elevator machine room, characterized in that it is attached to a guide rail in a hoistway via a bracket.