JPH0521829B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an elevator hoist having parallel shaft gears and a shaft sealing device for preventing leakage of lubricating oil.

[Conventional technology]

Figures 3 to 6 are diagrams showing a conventional elevator hoist having parallel shaft gears similar to the one shown in, for example, Japanese Patent Application Laid-open No. 61-273487, and Figure 3 shows a longitudinal section of the hoistway. 4 is a sectional view taken along the line -- in FIG. 3, FIG. 5 is a plan view of the main part of FIG. 4, and FIG. 6 is an enlarged (partially cut away) view of the main part of FIG. 4.

In the figure, 1 is a hoistway, 2 is a machine room provided above the hoistway 1, and a through hole 2b is bored in the machine room floor 2a. 3 is a support beam laid on the machine room floor 2a, 4 is a support beam fixed on the support beam 3,
5 is a support stand supported by the support beam 4 via an elastic body 6; 7 is a hoisting electric motor installed on the support stand 5;
8 is a brake wheel fixed to the rotating shaft of the electric motor 7;
9 is a brake arm that applies braking force to the brake car 8;
Reference numeral 10 denotes a reducer that is installed on the support stand 5 and is composed of parallel shaft teeth; 11 is an output shaft fixed to the output side teeth 10a of the reducer 10; the output shaft is supported on a bearing stand 12 fixed to the support stand 5; There is. 13 is a shaft sealing device provided on the output shaft 11 side of the reducer 10, into which a bearing 13a supporting the output shaft 11 is fitted, a cover 13b is attached to the end thereof, and the inner circumference of the cover 13b and the output An oil seal 13c is installed between the outer periphery of the shaft 11.
is installed. 14 is a drive sheave fixed to the output shaft 11; 15 is a deflector pivoted on a deflection beam 16 fixed to the lower surface of the support base 5; 17 is a main sheave wound around the drive sheave 14 and the deflection sheave 15. The cable 18 is a car placed in the hoistway 1, and the main cable 1
The car frame 18a is connected to one end of the car frame 18a, and a car chamber 18c is supported by the car frame 18a via an elastic body 18b. 19 is a counterweight placed in the hoistway 1 and connected to the other end of the main rope 17, and 20 is cinder concrete poured on the machine room floor 2a.

A conventional elevator hoist is configured as described above, and when the electric motor 7 rotates, this rotation is reduced by the reducer 10 and transmitted to the output shaft 11, and the drive sheave 14 is driven. Now the main rope 1
7, the car 18 and the counterweight 19 are raised and lowered alternately.

Lubricating oil is stored in the reducer 10 to lubricate the gears, and the shaft seal device 13 prevents the lubricating oil from leaking.
1 to prevent oil leakage.

[Problem that the invention seeks to solve]

In the conventional elevator hoisting machine as described above, a shaft sealing device 13 using an oil seal 13c is used, but the part of the oil seal 13c that contacts the output shaft 11 wears out due to long-term use. The lubricating oil oozes out, passes through the outer cover of the reducer 10, and drips downward. On the other hand, due to the rotation of the drive sheave 14, a wind as shown by arrow A in FIG. 6 is generated in the shaft sealing device 13. Therefore, there is a problem in that the dropped lubricating oil adheres to the drive sheave 14 and reduces the traction ability between the drive sheave 14 and the main rope 17. Furthermore, due to the centrifugal force caused by the rotation of the driving sheave 14, lubricating oil adhering to the driving sheave 14 scatters and adheres to the brake shaft 8, brake arm 9, etc., reducing the braking force. .

This invention was made to solve the above-mentioned problems, and prevents the lubricating oil leaking from the shaft sealing device from scattering under the influence of the wind generated by the rotation of the drive sheave. An object of the present invention is to provide a hoisting machine for an elevator that can prevent adhesion to cars, brake equipment, etc.

[Means for solving problems]

The elevator hoist according to the present invention includes an oil receiving box installed below the shaft sealing device, and a partition plate having an upper end fixed to the shaft sealing device and a lower end extending above the opening of the oil receiving box. It is something that

[Effect]

In this invention, since the partition plate is provided between the reducer and the driving sheave, the influence of wind on the lubricating oil dripping from the shaft sealing device is suppressed, and the lubricating oil descends along the partition plate. Drips into the oil container.

〔Example〕

1 and 2 are diagrams showing an embodiment of the present invention. FIG. 1 is an enlarged (partially broken) view of the main part, and FIG. 2 is a cross-sectional view taken along the line - - of FIG. Similar parts are indicated by the same reference numerals. In addition, Figure 3~
FIG. 5 is also used in this embodiment.

In the figure, 25 is an oil receiving box that is installed below the shaft sealing device 13 and opens upward, and 26 is a partition plate that has a through hole 26a and an opening groove 26b at its upper end, through which bolts for fixing the cover 13b are inserted. 27, is fixed to the cover 13b, and the lower end is an oil receiving box 25.
extends above the opening.

In the elevator hoist constructed as described above, the lubricating oil leaking from the shaft sealing device 13 is transmitted through the partition plate 26 without being affected by the wind generated by the rotation of the driving sheave 14. It descends and drips into the oil receiving box 25. Therefore, adhesion to the drive sheave 14 is prevented.

When removing the partition plate 26, loosen the bolt 27 and rotate the partition plate 26 counterclockwise in FIG. 2, so that the partition plate 26 rotates around the bolt 27. If the bolts 27 are removed here, the partition plate 26 can be removed. When putting it on, the operation is the opposite,
The partition plate 26 may be loosely attached with the bolts 27, rotated clockwise, the bolts 27 inserted into the opening grooves 26b, and then the bolts 27 may be fastened.

〔Effect of the invention〕

As explained above, in this invention, an oil receiving box is installed below the shaft sealing device, and a partition plate is provided whose upper end is fixed to the shaft sealing device and whose lower end extends above the opening of the oil receiving box. The effect of preventing lubricating oil leaking from the shaft sealing device from scattering under the influence of the wind generated by the rotation of the drive sheave, and preventing it from adhering to the drive sheave, brake equipment, etc. There is.

[Brief explanation of the drawing]

1 and 2 are diagrams showing an embodiment of an elevator hoisting machine according to the present invention. FIG. 1 is an enlarged (partially broken) view of the main part, and FIG. 2 is a cross-sectional view taken along the line -- in FIG. Figures 3 to 6 show conventional elevator hoisting machines. Figure 3 is a vertical sectional view of the hoistway, Figure 4 is a sectional view taken along the - line in Figure 3, and Figure 5 is a vertical sectional view of the hoistway. FIG. 4 is a plan view of the main part, and FIG. 6 is an enlarged (partially cut away) view of the main part of FIG. In the figure, 10 is a speed reducer, 10a is a gear, 11 is an output shaft, 13 is a shaft sealing device, 14 is a driving sheave, 25 is an oil receiving box, and 26 is a partition plate. Note that the same reference numerals in the figures indicate the same parts.

Claims (1)

[Claims] 1. A reduction gear is installed that houses a reduction gear fixed to a parallel shaft and supplies lubricating oil thereto, and a driving sheave is connected to an output shaft fixed to the reduction gear and protruding from the reduction gear, and the output In the shaft having a shaft sealing device for preventing leakage of the lubricating oil,
An oil receiving box is provided below the shaft sealing device and opening upward, and the oil receiving box is arranged between the speed reducer and the driving sheave, the upper end is fixed to the shaft sealing device, and the lower end is the opening of the oil receiving box. A hoisting machine for an elevator, characterized by comprising a partition plate extending above the section.