JPH0521828B2 - - 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 5 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, and FIG. 5 is an enlarged (partially broken) 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;
Reference numeral 8 denotes a reducer which is also installed on the support stand 5 and is composed of parallel shaft gears, and 9 is an output shaft fixed to the output side gear 8a of the reducer 8, which is supported on a bearing stand 10 fixed to the support stand 5. ing. Reference numeral 11 denotes a shaft sealing device provided on the output shaft 9 side of the reducer 8, into which a bearing 11a that supports the output shaft 9 is fitted, and a cover 1 is attached to the end of the bearing 11a.
1b is attached, and an oil seal 11c is attached between the inner circumference of the cover 11b and the outer circumference of the output shaft 9. 12 is an oil receiving box installed below the shaft sealing device 11, 13 is a drive sheave fixed to the output shaft 9, and 14 is a deflection sheave pivotally supported on a deflection beam 15 fixed to the lower surface of the support base 5. , 16 is the driving sheave 1
3 and the main rope wrapped around the deflection wheel 14, 17
is a car placed in the hoistway 1, which has a car frame 17a connected to one end of the main rope 16 and an elastic body 17b connected to the car frame 17a.
The cage 17c is supported via the cage 17c. 18 is a counterweight arranged in the hoistway 1 and connected to the other end of the main rope 16; 19 is a machine room 2a;
This is cylindrical concrete poured in the area.

A conventional elevator hoist is configured as described above, and when the electric motor 7 rotates, this rotation is reduced by the reducer 8 and transmitted to the output shaft 9, and the drive sheave 13 is driven. The car 17 and the counterweight 18 are now raised and lowered alternately via the main rope 16.

Lubricating oil is stored in the reducer 8 and lubricates the teeth, but the shaft sealing device 11 prevents the lubricating oil from leaking.
contacts to prevent oil leakage. However, when the oil seal 11c deteriorates over time, oil leakage occurs, so an oil receiving box 12 is provided to receive oil dripping from the shaft sealing device 11.

[Problem that the invention seeks to solve]

In the conventional elevator hoisting machine as described above, the oil receiving box 12 is placed below the shaft sealing device 11, so it is necessary to widen the gap between the reducer 8 and the drive sheave 13. There is a problem.
Further, when taking out the oil receiving box 12 filled with oil, it is difficult to take out because the space is small, and there is also a problem that there is a risk of spilling the oil.

This invention was made to solve the above problems, and it is possible to arrange an oil receiving box without making the gap between the reducer and the drive sheave unnecessarily wide, and it can be easily attached and detached. The purpose of the present invention is to provide a hoisting machine for an elevator that can be used as an elevator.

[Means for solving problems]

The elevator hoisting machine according to the present invention provides a space along the axial direction of the output shaft between the bottom of the reducer and the support base 5, and includes an oil receiving box in which both ends protrude to both sides of the reducer. It is stored and fastened to a support stand on the opposite side of the driving sheave.

[Effect]

In this invention, since the oil receiving box is housed in the space below the reducer, the amount of protrusion toward the drive sheave side is small.

Moreover, since the oil receiving box is fastened on the side opposite to the driving sheave, if this fastening is released, it can be pulled out to the side opposite to the driving sheave.

〔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. Note that FIG. 3 is also used in this embodiment.

In the figure, 21 is lubricating oil stored in the reducer 8;
22 is an output shaft 9 between the bottom of the reducer 8 and the support base 5.
The oil receiving box 12 is a space provided along the axial direction of the oil receiving box 12.
is stored in this space 22, and both ends thereof are connected to the reducer 8.
protrudes on both sides. 23 is a bolt for fastening the oil receiving box 12 to the support base 5 on the side opposite to the driving sheave 13; 24 is a partition whose upper end is fixed to the cover 11b of the shaft sealing device 11 and whose lower end extends above the oil receiving box 12; It is a board.

In the elevator hoisting machine configured as described above, if oil leaks from the shaft sealing device 11,
The leaked oil passes through the partition plate 24 and accumulates in the oil receiving box 12. When removing the oil receiving box 12 with accumulated oil, remove the bolt 23 and remove the drive sheave 1 of the reducer 8.
Maintenance work is easy as all you have to do is pull it out to the side opposite to 3. In addition, since the oil receiving box 12 is stored using the space 22 below the reducer 8, the amount of protrusion from the reducer 8 toward the drive sheave 13 is small, and the amount of protrusion between the reducer 8 and the drive sheave 13 is small. It is possible to avoid making the gap wider than necessary.

〔Effect of the invention〕

As explained above, in this invention, a space is provided between the bottom of the reducer and the support base, and an oil receiving box with both ends protruding on both sides of the reducer is housed in this space, and this is placed on the non-driving sheave side. Since it is fastened to the support stand, the oil receiving box can be placed without making the gap between the reducer and the drive sheave unnecessarily wide, and it can be easily attached and detached to facilitate maintenance work. It has the effect of

[Brief explanation of drawings]

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 5 are diagrams showing 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. 4 is an enlarged (partially broken) view of the main part of FIG. 4. FIG. In the figure, 5 is a support stand, 8 is a reducer, 8a is a gear,
9 is an output shaft, 11 is a shaft sealing device, 12 is an oil receiving box,
13 is a driving sheave, 21 is a lubricating oil, 22 is a space, 2
3 is a bolt. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] 1. A reduction gear that houses a reduction gear fixed to a parallel shaft and supplies lubricating oil to the reduction gear is fixed to a support base,
A driving sheave is coupled to an output shaft fixed to the reduction gear and protruding from the reduction gear, and the output shaft is provided with a shaft sealing device for preventing leakage of the lubricating oil, wherein the bottom part of the reduction gear and A space is provided between the support stands along the axial direction of the output shaft, and an oil that is housed in the space and has both ends protruding to both sides of the reduction gear and is fastened to the support stand on the opposite side to the drive sheave. An elevator hoist characterized by being equipped with a receiving box.