JP2001278571A - Hoisting machine for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hoisting machine for elevator facilitated in the maintenance thereof with small man-hours by pivotally holding a sheave shaft with a rolling bearing, and providing a bearing box capable of effectively discharging the deteriorated grease inside while supplying the grease. SOLUTION: The bearing box 2 is provided close to an edge of a base 1, and the rolling bearing 3 pivotally holding a sheave shaft 4 is arranged. A grease filling passage 10 is provided at an upper side of the bearing box 2, and an outside discharge passage 12 is arranged from outside of a lower side of the bearing box 2 to the outside of the base 1, and an inside discharge passage 14 is arranged from inside of the lower side of the bearing box 2 to the outside of the base 1. With this structure the deteriorated grease is pushed out from inside of the bearing box 2 at positions close to the outside and the inside of the base so as to be effectively discharged through the outside discharge passage 12 and the inside discharge passage 14 by supplying the grease. Lubricating failure due to the staying of the deteriorated grease is thereby eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator hoist for driving a main rope wound around a sheave.

[0002]

2. Description of the Related Art FIG. 7 shows, for example, JP-A-7-308043.
FIG. 1 is a longitudinal sectional view showing a main part of a conventional elevator hoist similar to the configuration shown in Japanese Patent Application Laid-Open Publication No. H10-115,878. In the figure, reference numeral 1 denotes a base constituting a base of a reduction gear box or the like of an elevator hoisting machine, 2 denotes a bearing box formed on a bearing stand disposed near an edge of the base 1, and 3 denotes a bearing box provided in the bearing box 2. Rolling bearings,
Reference numeral 4 denotes a sheave shaft whose end is pivotally supported by the rolling bearing 3. Reference numeral 5 denotes a bearing nut, which is screwed into the end of the sheave shaft 4 and fastens the sheave shaft 4 to the rolling bearing 3 via a bearing washer 6.

[0003] Reference numeral 7 denotes an inner bearing cover.
The rolling bearing 3 is provided on the inside to cover the space between the sheave shaft 4 and the edge of the bearing box 2 and to face the outer ring of the rolling bearing 3. 8
Reference numeral denotes an outer bearing cover, which is provided outside the base 1 of the bearing housing 2 and covers the sheave shaft 4 and the edge of the bearing housing 2 and is arranged to face the outer race of the rolling bearing 3. 9 is an O-ring,
The space between the inner bearing cover 7 or the outer bearing cover 8 and the edge of the bearing box 2 is sealed.

[0004] Reference numeral 10 denotes a grease injection passage provided at the upper side of the bearing housing 2 and communicated with the bearing housing 2. Reference numeral 11 denotes a grease nipple provided at an opening at an upper end of the injection housing 10.
Reference numeral 2 denotes a grease discharge path, the upper end of which is opened toward the outside of the base 1 in the lower part of the inside of the bearing housing 2, formed to descend, and the lower end is opened to the outside position of the base 1. Reference numeral 13 denotes a discharge port cover for closing a lower end opening of the discharge path 12.

The conventional elevator hoist is constructed as described above, and grease is injected from the grease nipple 11 into the bearing box 2 to lubricate the rolling bearing 3. Also,
When necessary, grease is supplied from the grease nipple 11 into the bearing housing 2. When the grease is supplied, the discharge lid 1
3 is removed, and the deteriorated grease in the bearing housing 2 is pushed out by the supplied grease and discharged from the discharge passage 12. Even if a grease discharge path is provided so as to open toward the inside of the base 1 depending on the installation state in the case of an elevator hoist, it is often difficult to collect the discharged grease, so that it is not practical. It is.

[0006]

In the conventional elevator hoist described above, deteriorated grease in the bearing housing 2 is discharged from the discharge passage 12 by replenishing grease. However, the inner bearing cover 7 on the lower side inside the bearing housing 2
On the side, that is, on the inside of the base 1, the discharge path 12
Is provided near the outer bearing cover 8 of the base 1 on the lower side of the inside of the bearing box 2, that is, near the outer side of the base 1, the deteriorated grease is hardly discharged and stays. For this reason, there has been a problem that the lubricating effect of the grease on the rolling bearing 3 becomes insufficient, and the function of the hoist is impaired.

The present invention has been made to solve such a problem, and has a bearing box equipped with a rolling bearing pivoting a sheave shaft and capable of effectively discharging old grease inside by replenishing grease. The purpose is to obtain an elevator hoist.

[0008]

In an elevator hoist according to the present invention, a bearing box provided near an edge of a base, and a rolling bearing provided on the bearing box and pivoting a sheave shaft are provided. A grease injection passage which is opened on the upper side of the bearing box and is provided in communication with the bearing box, and an upper end is opened toward the outside of the base on the lower side of the bearing box, and is formed to be lowered and the lower end is formed of the base. An outer discharge path for grease that opens outward and an inner discharge path for grease that has an upper end that opens toward the inside of the base below the inside of the bearing housing and that is formed to descend and that has a lower end that opens to the outside of the base are provided. .

Further, in the elevator hoist according to the present invention, the upper end is opened toward the outside of the base on the lower side of the bearing housing, and is lowered, and the lower end is located inside the end of the inner discharge passage near the outside of the base. An open outer discharge channel is provided.

In the elevator hoist according to the present invention, the bearing box provided near the edge of the base body;
A rolling bearing provided on the bearing box and pivoting the sheave shaft, a grease injection path opened on the upper side of the bearing box and provided in communication with the bearing box, and one end of the base on the lower side inside the bearing box. A first discharge path for grease, which is opened toward the inside and outside, respectively, and is horizontally extended to one side in a direction orthogonal to the rotation axis of the sheave shaft, and the other end is opened to one side of the base. And one end is opened to the inner side and the outer side of the base on the lower side inside the bearing box, and is horizontally extended to the other side in the direction orthogonal to the rotation axis of the sheave shaft, and the other end is formed on the other side of the base. And a second grease discharge passage arranged in an open state.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a view showing an example of an embodiment of the present invention, and is a longitudinal sectional view showing a main part of an elevator hoist. In the drawing, reference numeral 1 denotes a base constituting a base of a reduction gear box or the like of an elevator hoisting machine;
Numeral 3 denotes a bearing box formed on a bearing stand disposed near an edge of the base 1, 3 denotes a rolling bearing provided in the bearing box 2, 4 denotes a sheave shaft whose end is pivotally supported by the rolling bearing 3, 5. Is a bearing nut, which is screwed into the end of the sheave shaft 4 and fastens the sheave shaft 4 to the rolling bearing 3 via a bearing washer 6.

Reference numeral 7 denotes an inner bearing cover, which is a base 1 of the bearing housing 2.
The bearing housing 2 is provided inside to cover a space between the sheave shaft 4 and the edge of the bearing housing 2 and is arranged to face the outer ring of the rolling bearing 3.
Form the inner surface of Reference numeral 8 denotes an outer bearing cover.
The outer surface of the bearing housing 2 is formed by covering the space between the sheave shaft 4 and the edge of the bearing housing 2 and facing the outer ring of the rolling bearing 3. An O-ring 9 seals between the inner bearing cover 7 or the outer bearing cover 8 and the edge of the bearing housing 2.

Reference numeral 10 denotes a grease injection passage which is opened on the upper side of the bearing housing 2 and is provided in communication with the bearing housing 2. Reference numeral 11 denotes a grease nipple provided at an opening at the upper end of the injection housing 10.
Reference numeral 2 denotes a grease outside discharge passage, the upper end of which is opened toward the outside of the base 1 in the lower part of the inside of the bearing housing 2, is formed to be lowered, and the lower end is opened at the outside position of the base 1.

Reference numeral 13 denotes an outer discharge port cover for closing the lower end opening of the outer discharge path 12. Reference numeral 14 denotes an inner discharge passage for grease, the upper end of which is opened toward the inside of the base 1 below the bearing housing 2, is provided inside the base 1, and is formed to descend, and the lower end is opened to the outside of the base 1. It is arranged. Reference numeral 15 denotes an inner discharge port cover for closing the lower end opening of the inner discharge path 14.

In the elevator hoist constructed as described above, grease is injected from the grease nipple 11 into the bearing housing 2 to lubricate the rolling bearing 3. Further, grease is supplied from the grease nipple 11 into the bearing housing 2 when necessary. When the grease is supplied, the outer discharge port lid 13 and the inner discharge port lid 15 are removed, and the deteriorated grease in the bearing housing 2 is pushed out by the supplied grease and discharged from the outer discharge path 12 and the inner discharge path 14. .

For this reason, the grease deteriorated in the bearing housing 2 due to the replenishment of grease is discharged from the outer discharge passage 12 on the outer side of the base 1 in the bearing housing 2, and is discharged on the inner side of the base 1 in the bearing housing 2. Each of them is discharged from the path 14 to the outside of the substrate 1. Then, the discharged grease is collected outside the base 1.

As a result, the deteriorated grease in the bearing housing 2 is effectively discharged without staying on the outer side and the inner side of the base 1 in the bearing housing 2. As a result, it is possible to eliminate a decrease in the function of the hoist caused by the insufficient lubrication of the rolling bearing 3 due to the deteriorated grease staying in the bearing housing 2. Also, the inner bearing cover 7
Since the deteriorated grease can be discharged without removing the grease, the trouble of grease replenishment work can be saved.

The inner bearing cover 7 and the like cannot be removed depending on the installation state of the elevator hoisting machine,
Even if it is difficult to collect the deteriorated grease, the grease can be easily and reliably renewed. Further, it is possible to prevent overgrease and grease leakage due to excessive grease supply during maintenance work. Therefore, an appropriate lubricating action can be obtained in the rolling bearing 3, and a predetermined function of the hoist can be maintained in a normal state.

Embodiment 2 FIG. 2 is a view showing an example of another embodiment of the present invention, and is a longitudinal sectional view showing a main part of an elevator hoist. In the drawing, the same reference numerals as those in FIG. 1 described above denote corresponding parts, and 16 denotes an outer discharge passage for grease, the upper end of which is opened toward the outside of the base 1 in the lower part of the inside of the bearing housing 2, and the lower end is formed to be lowered. Are disposed at the end of the inner discharge path 14 on the outer side of the base 1 so as to open. 17
Reference numeral denotes a discharge port cover for closing an opening outside the base 1 of the inner discharge path 14.

In the elevator hoist constructed as described above, grease is injected into the bearing housing 2 to lubricate the rolling bearings 3 as in the embodiment of FIG. Grease is supplied into 2. When the grease is replenished, the discharge port lid 17 is removed,
The deteriorated grease in the bearing housing 2 is pushed out by the replenished grease to form the outer discharge passage 12 and the inner discharge passage 16.
And is discharged to the outside of the substrate 1 through Therefore, although detailed description is omitted, the same operation as the embodiment of FIG. 1 can be obtained in the embodiment of FIG.

Embodiment 3 3 to 5 are views showing another example of the embodiment of the present invention. FIG. 3 is a front view of a main part of the elevator hoisting machine, and FIG. 4 is a sectional view taken along line AA of FIG. FIG. 5 is a conceptual vertical sectional side view of FIG. In the drawing, the same reference numerals as those in FIG. 1 described above denote corresponding parts, and reference numeral 18 denotes a first grease discharge passage, one end of which is opened toward the inner side and the outer side of the base 1 on the lower side inside the bearing housing 2, respectively. 4 is horizontally extended to one side in a direction orthogonal to the rotation axis, and the other end is arranged to be open on one side surface of the base 1.

Reference numeral 19 denotes a first discharge port cover for closing an opening on a side surface of the base 1 in the first discharge path, and reference numeral 20 denotes a second discharge path for grease. Each of the bases 1 is opened to the outside and extended horizontally to the other side in a direction perpendicular to the rotation axis of the sheave shaft 4, and the other end is opened to the other side surface of the base 1. Reference numeral 21 denotes a second discharge port cover that closes an opening on the side surface of the base 1 in the second discharge path.

In the elevator hoist constructed as described above, the grease is injected into the bearing housing 2 to lubricate the rolling bearings 3 as in the embodiment of FIG. Grease is supplied into 2. When the grease is supplied, the first discharge port lid 19 and the second discharge port lid 21 are removed, and the deteriorated grease in the bearing housing 2 is pushed out by the supplied grease, and the first discharge path 18 and the second discharge path 20 are removed. And is discharged to the outside of the substrate 1 through Therefore, although detailed description is omitted, FIGS.
In this embodiment, the same operation as in the embodiment of FIG. 1 can be obtained.

Embodiment 4 FIG. 6 is a view showing an example of another embodiment of the present invention, and is a front view showing a main part of an elevator hoist in a longitudinal section. The elevator hoisting machine is configured similarly to the above-described embodiment of FIGS. 3 to 5 except for FIG. In the figure, the same reference numerals as those in FIGS.

Reference numeral 22 denotes a first grease discharge passage, one end of which is opened on the inner side and the outer side of the base 1 on the lower side inside the bearing housing 2, respectively, and is horizontal on one side in a direction orthogonal to the rotation axis of the sheave shaft 4. And the other end is arranged to be open downward on one side surface of the base 1.

Reference numeral 23 denotes a second grease discharge passage, one end of which is opened toward the inside and outside of the base 1 at the lower side of the inside of the bearing housing 2, and is horizontal to the other side in the direction orthogonal to the rotation axis of the sheave shaft 4. And the other end is arranged to be opened downward on the other side surface of the base 1.

In the elevator hoist constructed as described above, grease is injected into the bearing housing 2 to lubricate the rolling bearings 3 as in the embodiment of FIG. Grease is supplied into 2. When the grease is supplied, the first discharge port lid 19 and the second discharge port lid 21 are removed, and the deteriorated grease in the bearing housing 2 is pushed out by the supplied grease, and the first discharge path 22 and the second discharge path 23 are provided. And is discharged to the outside of the substrate 1 through

Therefore, although detailed description is omitted, FIG.
In this embodiment, the same operation as in the embodiment of FIG. 1 can be obtained. In the embodiment of FIG. 6, the openings on the outer side of the base 1 of the first discharge path 22 and the second discharge path 23 are arranged at positions lower than the lower side of the inside of the bearing housing 2. Therefore, the deteriorated grease in the bearing housing 2 can be easily discharged when the grease is supplied.

[0029]

As described above, the present invention provides a bearing box provided near the edge of a base, a rolling bearing provided on the bearing box and pivoting a sheave shaft, and an opening above the bearing box. A grease injection path provided in communication with the bearing housing;
The upper end opens toward the outside of the base on the lower side inside the bearing housing,
A lower part formed at the lower side and having a lower end open to the outside of the base, and an upper end opening toward the inner side of the base at the lower side of the bearing housing, and a lower part formed at the lower end and opened to the outside of the base. And a grease inner discharge passage.

As a result, the deteriorated grease in the bearing housing due to the supply of grease is pushed out from the outer discharge passage toward the outside of the base in the bearing housing and from the inner discharge passage toward the inside of the base in the bearing housing. It is discharged outside the substrate. Then, the discharged grease is collected outside the base. For this reason, the deteriorated grease in the bearing housing is effectively discharged without staying on the outside and inside of the base in the bearing housing. Therefore, since the deteriorated grease stays in the bearing housing, there is an effect of eliminating a decrease in the function of the hoist caused by insufficient lubrication of the rolling bearing.

As described above, according to the present invention, the upper end is opened on the lower side inside the bearing housing toward the outside of the base,
The lower end is provided with an outer discharge path opened at the lower end of the inner discharge path on the outer side of the base.

As a result, the deteriorated grease in the bearing housing due to the replenishment of the grease is pushed out from the outer discharge passage toward the outside of the base in the bearing housing and from the inner discharge passage toward the inside of the base in the bearing housing. It is discharged outside the substrate. Then, the discharged grease is collected outside the base. For this reason, the deteriorated grease in the bearing housing is effectively discharged without staying on the outside and inside of the base in the bearing housing. Therefore, since the deteriorated grease stays in the bearing housing, there is an effect of eliminating a decrease in the function of the hoist caused by insufficient lubrication of the rolling bearing.

Further, as described above, the present invention provides a bearing box provided near the edge of the base, a rolling bearing provided on the bearing box and pivoting a sheave shaft, and an opening above the bearing box. A grease injection path provided in communication with the bearing housing, and one end is opened toward the inner side and the outer side of the base on the lower side of the bearing box, respectively, on one side in a direction orthogonal to the rotation axis of the sheave shaft. A first grease discharge passage extending in the horizontal direction and having the other end opened to one side surface of the base, and one end opened to the inside and outside of the base on the lower side inside the bearing housing, and A second discharge path for grease is provided which is extended in the horizontal direction on the other side in the direction perpendicular to the rotation axis of the axle and has the other end opened to the other side surface of the base.

Accordingly, the deteriorated grease in the bearing housing due to the replenishment of the grease is pushed out from the outer side and the inner side of the base in the bearing housing via the first discharge path or the second discharge path, respectively, to the outside of the base. Is discharged. And
The discharged grease is collected outside the substrate. For this reason, the deteriorated grease in the bearing housing is effectively discharged without staying on the outside and inside of the base in the bearing housing. Therefore, since the deteriorated grease stays in the bearing housing, the function of the hoisting machine caused by the insufficient lubrication of the rolling bearing is eliminated.

[Brief description of the drawings]

FIG. 1 is a view showing a first embodiment of the present invention, and is a longitudinal sectional view of an essential part of an elevator hoisting machine.

FIG. 2 is a view showing the second embodiment of the present invention, and is a longitudinal sectional view of a main part of an elevator hoist.

FIG. 3 is a view showing the third embodiment of the present invention, and is a front view of a main part of the elevator hoist machine, which is longitudinally sectioned;

FIG. 4 is a view conceptually showing a cross section taken along line AA of FIG. 3;

FIG. 5 is a vertical sectional side view of a main part of FIG. 3;

FIG. 6 is a view showing the fourth embodiment of the present invention, and is a front view of a main part of the elevator hoist machine cut longitudinally.

FIG. 7 is a longitudinal sectional view showing a main part of a conventional elevator hoist.

[Explanation of symbols]

1 base, 2 bearing box, 3 rolling bearing, 4 sheave shaft,
10 injection path, 12 outer discharge path, 14 inner discharge path, 1
6 Outer discharge path, 18 first discharge path, 20 second discharge path.

Claims (3)

[Claims] A bearing box provided near an edge of a base;
A rolling bearing provided in the bearing box and pivoting the sheave shaft; a grease injection path opened to the upper side of the bearing box and provided in communication with the bearing box; The lower end of the grease is opened toward the outside of the base, the lower end is formed at the lower end, and the lower end of the grease is opened toward the inside of the base inside the bearing box. An elevator hoisting machine having a grease inner discharge passage formed downward and having a lower end opened to the outside of the base. 2. An outer discharge passage having an upper end opened toward the outside of the base at the lower side in the bearing housing, lowered, and a lower end opened into an end of the inner discharge passage toward the outside of the base. The elevator hoist according to claim 1, wherein: 3. A bearing box provided near an edge of a base,
A rolling bearing provided on this bearing box and pivoting the sheave shaft; a grease injection path opened to the upper side of the bearing box and provided in communication with the bearing box; , Each of which is open to the inside and outside of the base, is horizontally extended to one side in a direction orthogonal to the rotation axis of the sheave shaft, and the other end is arranged to be open to one side surface of the base. A first discharge path for grease, one end of which is opened toward the inner side and the outer side of the base on the lower side of the inside of the bearing box, and is horizontally extended to the other side in a direction orthogonal to the rotation axis of the sheave shaft. An elevator hoist having a second discharge path for grease, the other end of which is open to the other side of the base.