JPS646117B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field]

This invention relates to a hoisting device for an elevator.

[Prior art]

The conventional elevator hoisting device is shown in Figures 1 to 3.
This will be explained using figures. In FIG. 1, 1 is a hoistway, 2 is a machine room provided above the hoistway 1, and 3 is a hoisting device. In the hoisting device 3, a machine stand 5 is fixed on a support beam 4 fixed to a floor 2a of a machine room 2, and a base 8 of a hoist 7 is provided on the machine stand 5 via a vibration isolating rubber 6. There is. Hoisting machine 7
As shown in FIGS. 2 and 3, the input shaft 10a of the reducer 10 is integrally connected to the rotating shaft 9a of the electric motor 9, and the sheave 11 is fixed to the output shaft 10b of the reducer 10, and the sheave 11 is fixed to the output shaft 10b of the reducer 10. The electric motor 9 and sheave 11 are arranged on one side of the machine 10, and the shaft end of an output shaft 10b of the sheave 11 that protrudes toward the side opposite to the reducer 10 is supported by a bearing stand 12. A brake device 13 is disposed between the electric motor 9 and the reducer 10, and the brake device 1
3, the brake wheel 14 is connected to the input shaft 10 of the reducer 10.
A pair of brake shoes 15 are fixed to the brake arm 16 and are pressed against the outer circumferential surface of the brake wheel 14. It is configured to A main rope 20 is wound around the sheave 11 and the deflection sheave 19 that is pivotally supported on the base 8.
The main rope 20 extends into the hoistway 1 through a rope hole 2b provided in a, and one end of the main rope 20 is connected to a car 21, and the other end is connected to a counterweight 22. In the hoisting device 3 configured as described above, when the electric motor 9 is energized, the sheave 11 rotates via the reducer 10, and the main rope 20 moves the car 21 and the weight 22 to the hoistway 1. Raise and lower inside. Further, when necessary, the electric motor 9 is deenergized and the reduction gear 10 is braked by operating the brake device 13.

[Problem to be solved by the invention]

Generally, the main rope 20 of an elevator is composed of a wire rope and contains oil, so when the elevator is operated, the oil is applied to the main rope 20 at the sheave 11 part due to surface pressure with the groove 11a provided on the outer periphery. surface, and is blown away by the centrifugal force caused by the rotation of the sheave 11. This oil adheres to the brake wheel 14 and brake shoe 15 of the brake device 13, and in order to reduce the friction coefficient of these during braking, the braking by the brake device 13 becomes insufficient, and the landing error of the car 21 becomes large. Become. Particularly in the case of high-speed elevators, the sheave 11 rotates at such high speed that it may become impossible to brake.
Therefore, the applicant of this invention has proposed that the brake device 13
A partition plate 23 is arranged between the sheave 11 and the sheave 11.
Previously, we have proposed a system that prevents oil blown off by the centrifugal force caused by the rotation of brake wheel 14 and brake shoe 15 from adhering to the brake wheel 14 and brake shoe 15. However, in this hoisting device, when the oil that comes out on the surface of the sheave 11 is blown away by the centrifugal force due to its rotation, the oil with relatively large particles is prevented from flying toward the brake device 13 side by the partition plate 23. However, in many cases, the oil is dispersed in the form of fine particles such as mist, and this fine particle oil floats in the air and is applied to the brake sheave 14 or brake sheave from the opposite side of the partition plate 23 from the sheave 11. There was a problem with it adhering to U-15. This invention is an attempt to solve the problem of the one previously proposed by the applicant of the present invention mentioned above. An object of the present invention is to provide an elevator hoisting device for an elevator that can almost completely prevent oil splashed from the main cable due to centrifugal force caused by the rotation of the elevator from adhering to the brake car and the brake shoe.

[Means to solve the problem]

In order to achieve the above object, in the elevator hoisting device of the present invention, a sheave of the hoisting device;
At least one of the diverter wheels supporting the main rope is covered with a box-like body that is open at the bottom and has an exhaust port at the top, and an oil-absorbing material is disposed inside the box-like body, and an oil-absorbing material is attached to and detachable from the exhaust port. It is possible to install oil absorbing material.

[Effect]

According to the elevator hoisting device of the present invention configured as described above, oil scattered from the main rope due to centrifugal force due to the rotation of the sheave and deflection wheel is absorbed by the oil absorbing material provided inside the box-shaped body. In addition, the oil that scatters in the air in the form of fine particles is attached to the oil-absorbing material installed at the exhaust port on the top of the box, so that the oil that is scattered from the main rope, etc., is almost completely removed, including the fine particles. Absorbs oil and completely prevents any negative effects on brake equipment such as brake cars and brake shoes.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 4 and 5. The same reference numerals as in FIGS. 4, 5, and 1 to 3 indicate the same or corresponding parts, and 24 is a box-shaped body. This box-like body 24 is fixed on the base 8 and covers the sheave 11, and an oil-absorbing material 25 made of foamed polystyrene or the like is pasted on the inner surface of the box-like body 24. The lower surface of the box-like body 24 is open, and a hole 26 through which the main rope 20 passes is formed on one side of the box-like body 24, and an exhaust port 27 is formed on the upper surface. A shaped oil absorbing material 28 is detachably attached to the oil absorbing material 25 separately from the oil absorbing material 25. Note that the configuration of this embodiment other than that described above is the same as that shown in FIGS. 1 to 3, except that no partition plate is provided. In the hoisting device of the embodiment configured as above,
The hoistway is a type of ventilation path, and wind normally blows into the machine room 2 from the hoistway through the rope holes, so this wind enters the box-shaped body 24 from below and is exhausted from the exhaust port 27. Of the oil scattered from the main rope 20 due to the rotation of the sheave 11, those with relatively large particles are removed by the oil-absorbing material affixed inside the box-shaped body 24.
The particulate oil is made to adhere to the cotton-like oil-absorbing material 28 provided at the exhaust port 27 in the upper part of the box-like body 24 by using the wind coming out of the above-mentioned rope hole.
As a result, the oil splashed from the main rope 20 is almost completely absorbed, including particulate matter, and the oil is prevented from adhering to the brake wheel 14 and the brake shoe 15. Note that the cotton-like oil-absorbing material 28 should be replaced if ventilation becomes poor due to oil adsorption or the like. In addition, in this invention, the deflecting wheel may be covered with a box-like body as described above, and if both the sheave and the deflecting wheel are covered with the box-like body, oil scattering can be more reliably prevented; Even if it is covered with a box-like object, oil scattering can be significantly prevented.

【Effect of the invention】

As explained above, in the elevator hoisting device of the present invention, at least one of the sheave and the deflection wheel is covered with a box-like body that is open at the bottom and has an exhaust port at the top, and the inside of the box-like body absorbs oil. At the same time, the exhaust port is removably equipped with an oil-absorbing material, which absorbs relatively large particles of oil that is scattered from the main rope due to the centrifugal force caused by the rotation of the sheaves and deflection wheels. The oil is absorbed by the oil-absorbing material inside the box-shaped body, and the oil is dispersed in the air in the form of fine particles such as mist, and the wind blowing out from the rope hole in the machine room enters through the lower opening of the box-shaped body and is discharged from the exhaust port. When the oil is removed, the oil is absorbed by the oil absorbing material detachably attached to the exhaust port, and if the oil absorbing material at the exhaust port absorbs too much oil and ventilation becomes poor, it can be replaced, so oil splashed from the main rope can be removed from the brake car, By completely preventing the adhesive from adhering to the brake shoe or the like, it is possible to prevent an adverse effect during braking of the brake device and improve the safety of the elevator.

[Brief explanation of the drawing]

Fig. 1 is a partially sectional side view showing an elevator equipped with a hoisting device of a prior example, Fig. 2 is a side sectional view showing main parts of the hoisting device of a previous example, and Fig. 3 is a plan view of the same. , FIG. 4 is a view corresponding to FIG. 2 showing an elevator hoisting device according to an embodiment of the present invention, and FIG. 5 is a view corresponding to FIG. 3 in which the box-like body is sectional. 3... Hoisting device, 11... Sheave, 14... Brake wheel, 15... Brake shoe, 19... Diversion wheel, 20... Main rope, 21... Car, 22... Counterweight, 24 ... Box-shaped body, 25 ... Oil-absorbing material,
27...Exhaust port, 28...Oil absorbing material. In addition, the same parts or corresponding parts in the figures are indicated by the same reference numerals.

Claims (1)

[Claims] 1. A basket is attached to one end of the main rope wrapped around a sheave.
In an elevator hoisting device in which a counterweight is connected to the other end and the car and the weight are raised and lowered by rotation of the sheave, at least one of the sheave and the deflection sheave supporting the main rope is connected to the lower part of the hoisting device. An elevator, characterized in that it is covered with a box-like body that is open and has an exhaust port at the top, an oil-absorbing material is disposed inside the box-like body, and the oil-absorbing material is removably attached to the exhaust port. Hoisting device.