JPH1080875A - Bearing replacing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To absorb an impact noise by constituting plural ring-shaped pedestals of a steel plate-made ring member having a ring groove fitted to the upper end of a working table and a wooden ring member fixed on this ring member. SOLUTION: A ring-shaped pedestal 20 is placed on the upper end 19c of a cylinder body 19. The ring shaped pedestal 20 is composed of a steel plate- made first ring member 21 having a ring groove 21a fitted to the upper end 19c of the cylinder body 19 and a wooden ring member 22 fixed on this first ring member 21. Even if an extracting auxiliary appliance vibrates by the first ring member 21, it does not slip down from the cylinder body 19 of a working table 12. The ring-shaped pedestal 20 also has a wooden second ring member 20, and absorbs an impact noise by jumping up and down of the extracting auxiliary appliance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearing replacement device suitable for removing a bearing from a shaft used for, for example, an escalator speed reducer.

[0002]

2. Description of the Related Art Conventionally, when exchanging a bearing fixed to a shaft such as an output shaft or an input shaft, the shaft removed from a device such as a speed reducer is vertically moved by a wooden frame. It has been considered to remove the bearing from the shaft by supporting it so as to provide a hydraulic ram on a wooden frame and applying a pressing force by the hydraulic ram.

[0003]

With the above-mentioned conventional study structure, it is extremely difficult to make a wooden frame for vertically supporting the shaft body. Therefore, a cylindrical workbench made of a steel plate having excellent workability and manufacturability has been newly studied. However, since this cylindrical work table is made of steel plate, if a work is directly placed on the work table and the work of removing the bearing fixed to the outer periphery of the shaft body is performed by a hydraulic ram, the work is performed. However, there is a problem that a large impact sound is generated due to the jump.

In view of the above problems, an object of the present invention is to provide
Even if impact noise is generated due to jumping out of the employment during the bearing removal work, the impact sound can be absorbed, and the ring-shaped pedestal placed on the work table to collect the impact sound does not slide down To provide a bearing exchange device.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a first support plate in which a shaft having a bearing press-fitted and fixed to the outer periphery is fitted and the bearing is mounted, and the first support plate is mounted on the first support plate. And a plurality of through bolts that are located above the second support plate and support the hydraulic ram, and a plurality of through bolts that integrate both the second support plate and the first support plate while maintaining a predetermined distance therebetween. A bearing replacement in which the bearing is removed from the shaft by placing the pull on a cylindrical work table and pressing the shaft downward with the hydraulic ram. In the apparatus, the recruit is placed on the worktable via at least a plurality of ring-shaped pedestals, and the plurality of ring-shaped pedestals are provided with a ring groove fitted to an upper end of the worktable. A first ring member made of By configuring and a second ring member fixed wooden on 1 ring member is achieved.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

In the drawing, a speed reducer 1 in an escalator drive includes a main body case 2, a main body case cover 3 covering the upper surface of the main body case 2, and a sprocket side cover 4 attached to one side surface portion 2 of the main body case 2. And a brake drum side cover 5 attached to the other side surface portion 2b of the main body case 2, an input shaft 6, an intermediate shaft 7, and an output shaft 8
And After the shafts of the output shaft 8, the intermediate shaft 7, and the input shaft 6 are assembled in the main body case 2, the main body case cover 3 is fixed by bolts 9 so as to cover the shafts. The output shaft 8 includes a sprocket-side bearing 8a.
, A shrink fit collar 8b, an output gear 8c, and a brake drum side bearing 8d. The intermediate shaft 7 is
It has a sprocket-side bearing 7a, intermediate large teeth 7b, an intermediate small gear 7c, and a brake drum-side bearing 7a. The input shaft 6 has a shrink fit collar 6a, a sprocket side bearing 6b, an input gear 6c, a brake drum side bearing 6d, and a shrink fit collar 6e. In FIG. 2, a bearing replacement device 10 for an output shaft includes a pullout 11, a work table 12, and a hydraulic pump 13.
And The recruitment 11 supports a first support plate 14 made of a steel plate on which the sprocket-side bearing 8a or the brake drum-side bearing 8d is mounted, and is located above the first support plate 14 and supports the hydraulic ram 15. And four through bolts 17, 17a, 17b, and 17 for integrating the second support plate 16 and the first support plate 14 while maintaining a predetermined distance therebetween.
c.

The work table 12 comprises a steel plate substrate 18 and a steel plate cylinder 19 welded to a central portion of the substrate 18. The cylindrical body 19 has a plurality of frontages 19a, 19a.
b is formed.

A ring-shaped pedestal 20 is mounted on the upper end 19c of the cylindrical body 19. The ring-shaped pedestal 20 includes a first ring member 21 made of a steel plate provided with a ring groove 21 a fitted into the upper end 19 c of the cylindrical body 19, and the first ring member 21.
And a wooden second ring member 22 fixed thereon. The first ring member 21 and the second ring member 22
The screws 23 are integrated. First ring member 2
1 includes four screw holes 21 as shown in FIGS.
b, 21c, 21d, and 21e are provided. 9 and 10, the second ring member 22 is provided with four mounting holes 22a, 22b, 22c, and 22d. The diameter of the circular opening 21f of the first ring member 21 and the second
The diameter of the circular opening 22e of the ring member is the same as the diameter. The first support plate 14 is composed of a steel plate assembly member 26 that is combined with a steel plate horseshoe-shaped member 24 to form a fitting hole 25 into which the output shaft 8 is fitted. Horseshoe-shaped member 24
As shown in FIGS. 12 and 13, four mounting holes 24 are provided.
a, 24b, 24c, and 24d are provided. Hole 24
distance L ₁ from hole a to hole 24b, hole 24b to hole 24c
Distance L ₃ from the distance L ₂ and the hole 24c until to the hole 24d
Are the dimensions between the through bolts 17 and 17a attached to the holes 24a and 24b, the dimensions between the through bolts 17a and 17b attached to the holes 24b and 24c, and the through bolts 17b attached to the holes 24c and 24d. Of the sprocket-side bearing 8a or the brake drum-side bearing 8d is set smaller than the outer diameter of the sprocket-side bearing 8a or the brake drum-side bearing 8d.

The output shaft 8 can be fitted to the horseshoe-shaped member 24 only from the side of the cutout opening 24e provided in the horseshoe-shaped member 24, that is, between the holes 24a and 24d.

The fitting member 26 has a fitting notch 26 a fitted to the through bolt 17, a fitting notch 26 b fitting to the through bolt 17 c, and a fitting projection fitting to the notch opening 24 e of the horseshoe-shaped member 24. 26c and a step 26d are formed along the fitting projection 26c. Fitting protrusion 26c
And the horseshoe-shaped member 24 are configured to be flush on both sides. The fitting hole 25 into which the output shaft 8 is fitted is a horseshoe-shaped member 24.
Is formed by the notch opening 24e and the fitting projection 26c of the assembly member 26.

Second support plate 16 and through bolts 17, 17
As shown in FIG. 17, the first nut 27 and the second nut 28 are used to fix the members a, 17b, and 17c.
A horseshoe-shaped member 24 of the first support plate 14 and a through bolt 17a,
17b is fixed by the third nut 29.

As shown in FIGS. 2 and 17, the horseshoe-shaped member 24, the assembly member 26, and the through bolts 17 and 17c are fixed by a third nut 29. First support plate 1
To remove only the assembled member 26 from the fourth nut 29, the third nut 29
Can be loosened and the assembled member 26 can be pulled outward. vice versa,
In order to reassemble the removed assembly member 26 into the horseshoe-shaped member 24 to form the first support plate 14, the fitting protrusion 26c of the assembly member 26 is fitted into the notch opening 24e of the horseshoe-shaped member 42, and the fitting notch 26a , 26b through bolt 17,
After fitting to 17c, the assembly member 26 may be fastened to the horseshoe-shaped member 24 with the third nut 29.

A hydraulic hose 30 is connected between the hydraulic ram 15 and the hydraulic pump 13 as shown in FIG. The hydraulic ram 15 has a hose connection portion 15a for fixing one end of the hydraulic hose in a watertight manner. One or more connecting members 32 are detachably attached to the lower surface of the ram cover 31 that covers the tip of the hydraulic ram 15.

The sprocket bearing 8a is connected to the output shaft 8
2 and 4, the output shaft 8 is directly pressed by the ram cover 31 without using the connecting member 32. As shown in FIG. When the brake drum side bearing 8d is detached from the output shaft 8, as shown in FIGS. 5 and 6, three connecting members 32 are attached to the ram cover 31, and the output shaft 8 is pressed via the connecting members 32. I am trying to do it. Although the gap size between the ram cover 31 and the end surface of the shaft such as the output shaft 8 is different between the sprocket-side bearing 8a and the brake drum-side bearing 8d, the first nut 27 and the second nut 28 are loosened and the second
This can be dealt with by adjusting the number of the connecting members 32 without moving or disassembling the support plate 16.

FIGS. 18 to 21 show the sprocket-side bearing 7a and the brake drum-side bearing 7 of the intermediate shaft 7. FIG.
4 shows a bearing changer for replacing d. FIG.
2 to 27 show a bearing replacement device for replacing the sprocket-side bearing 6b of the input shaft 6 with the brake drum-side bearing 6d. 18 to 27, the same reference numerals as those in FIGS. 1 to 17 represent the same contents. 22 to 27, the same reference numerals as those in FIGS. 18 to 21 represent the same contents. The bearing replacement device for the intermediate shaft 7 includes a pullout 11 and a work table 33. The work table 33 is a work table 12 for a bearing replacement device of the output shaft 8.
The size of the intermediate shaft 7 is different from that of the first embodiment. As shown in FIGS. 18 to 20, the work table 33 is made of a steel plate substrate 34, a steel plate cylinder 35 integrated on the substrate 34 by welding or the like, and is detachably attached to the upper end of the cylinder 35. A first ring body 36 made of a fitted steel plate;
A wooden second ring body 38 fixed to the first ring body 36 with screws 37 or the like. A plurality of openings 35a, 35b, 35c, 35d, 3
5e and 35f are provided with their positions shifted in the vertical direction.

As the bearing replacement device for the input shaft 6, a recruiter 11 for the intermediate shaft 7 and a work table 33 are used. When replacing the sprocket-side bearing 6b of the input shaft 6, as shown in FIGS. 22 to 24, the insertion table 39 and the insertion cylinder 40 inserted into the cylindrical body 25, the first ring body 36 and the second A split ring body 41 inserted into the ring body 38 is used. When the brake drum side bearing 6d of the input shaft 6 is replaced, as shown in FIGS. 25 to 27, the two insertion tables 42 and 43 and the insertion cylinder 44 inserted into the cylinder 35, and A split ring body 41 inserted into the first ring body 36 and the second ring body 38 is used.

In order to remove the sprocket side bearing 8a from the output shaft 8 in the above configuration, as shown in FIG. Place. In this case, the hydraulic hose 3
0 is connected to the hose connection portion 15a of the hydraulic ram 15, and then the hiring 11 may be placed on the workbench 12, or the hiring 11 may be mounted on the workbench 12 and then the hydraulic hose 30
May be connected to the hose connection portion 15a of the hydraulic ram 15.

When the recruiter 11 is placed on the worktable 12, when the hydraulic pump 13 is operated to apply pressure to the hydraulic ram 15, one end surface of the output shaft 8 is pressed via the ram cover 31 and The collar 8b and the sprocket-side bearing 8a are pulled out of the shaft of the output shaft 8 by the first support plate 14 of the puller 11.

Next, in order to remove the bearing 8d on the brake drum side of the output shaft 8, the worker 11 is moved from the worktable 12 to the floor, and then the third nut 29 is loosened to assemble the assembly member 26.
Only from the pullout 11 and pull out the output shaft 8
Remove from After that, the output shaft 8 is turned over to bring the brake drum side bearing 8d to the upper position,
Again, the output shaft 8 is fitted into the notch opening 24e of the horseshoe-shaped member 24 of the pullout 11, and the fitting protrusion 26c of the assembly member 26 is fitted into the notch opening 24e of the horseshoe-shaped member 24. Thereafter, by tightening the third nut 29, the assembled member 26 is integrated with the horseshoe-shaped member 24. After the recruiter 11 in this state is mounted on the work table 12 again as shown in FIG. 5, when the hydraulic pump 13 is operated, the other end surface of the output shaft 8 is pressed by the hydraulic ram 15 and the brake drum side bearing is pressed. 8d is extracted from the shaft body of the output shaft 8.

When removing the bearing 8d on the brake drum side, it is only necessary to remove only the assembly member 26 from the disengagement member 11 assembled for removing the bearing 8a on the sprocket side. This can be done, and the entire hiring 11 can be newly disassembled and disassembled, so that workability is good.

Next, to remove the sprocket-side bearing 7a of the intermediate shaft 7, as shown in FIG.
After attaching the intermediate shaft 7 to the work table 1,
Place on 3.

Thereafter, when the hydraulic pump 13 is operated and one end surface of the intermediate shaft 7 is pressed by the hydraulic ram 15 through the connecting member 32 of the ram covers 31 and 4b, the sprocket-side bearing 7a is moved from the shaft of the intermediate shaft 7 It is extracted. The removal work of the brake drum side bearing 7d
In the same manner as the operation of removing the brake drum side bearing 8d of the output shaft 8, after removing the hiring 11 from the worktable 33, only the assembly member 26 is removed from the hiring 11, and the brake drum side bearing 7d of the intermediate shaft 7 is raised. Re-install the intermediate shaft 7 so that it is located at
1 may be attached to the worktable 33 and the hydraulic pump 13 may be operated.

Next, in order to remove the sprocket-side bearing 6b of the input shaft 6 from the shaft of the input shaft 6, FIG.
As shown in FIG. 3, the recruiter 11 to which the input shaft 6 is mounted in advance is placed on the work table 33 and the hydraulic pump 13 is operated. Then, one end face of the input shaft 6 is pressed by the hydraulic ram 15, and the sprocket-side bearing 6 b is extracted from the input shaft 6. In this case, in order to be able to use the work table 33 used for extracting the sprocket-side bearing 7a of the intermediate shaft 7, the insertion table 39 and the insertion cylinder 40 are placed in the cylinder 35 as shown in FIG. At the same time, the split ring 41 may be fitted to the first ring 36 and the second ring 38. Further, in order to remove the brake drum side bearing 6d from the shaft of the input shaft 6,
As shown in FIG. 26, the recruiter 11 on which the input shaft 6 is mounted in advance is placed on the work table 33 and the hydraulic pump 13 is operated. Then, the other end face of the input shaft 6 is pressed by the hydraulic ram 15, and the brake drum side bearing 6 d is pulled out from the input shaft 6. In this case, in order to be able to use the work table 33 used for extracting the sprocket-side bearing 7a of the intermediate shaft 7, the insertion tables 42 and 43 and the insertion cylinder 44 are connected to the cylindrical body 35 as shown in FIG.
And the split ring body 41 may be fitted to the first ring body 36 and the second ring body 38.

According to this embodiment, (1) the ring-shaped pedestal 20 is simply the upper end 1 of the cylindrical body 19.
9c, the link base 20 and the work table 12 can be separated and stored after use.
It is convenient.

(2) The work table 33 used to extract the sprocket-side bearing 7a and the brake drum-side bearing 7b of the intermediate shaft 7 is inserted into the insertion tables 39, 42, 43, the insertion cylinders 40, 44, and the split ring body 41. Can be used to extract the sprocket-side bearing 6b and the brake drum-side bearing 6d of the input shaft 6,
It is convenient.

(3) The pullout 11 used to pull out the sprocket-side bearing 7a and the brake drum-side bearing 7d of the intermediate shaft 7 detaches the horseshoe-shaped member 24 from the assembly member 26 and first supports the input shaft 6. By being attached to the plate 14, the sprocket-side bearing 6d and the brake-drum-side bearing 6d of the input shaft 6 can be used conveniently, and can be conveniently used.

(4) Even if the ring-shaped pedestal 20 is vibrated by the first ring member 21 having the ring groove 21a fitted to the upper end 19c of the cylindrical body 19, the work table 1
It does not slip off from the second cylindrical body 19. Further, the ring-shaped pedestal 20 has a wooden second ring member 20, and has a function of absorbing an impact sound caused by the splashing of the hiring 11.

[0029]

As described above, according to the present invention, when a work is placed on a workbench and the work of removing the bearing is performed, the work is generated by jumping of the work during the work. The impact sound is absorbed by the second wooden ring member, and a bearing replacement device is obtained in which the ring-shaped pedestal does not slide off the worktable due to the ring groove of the first ring.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a speed reducer of an escalator.

FIG. 2 is a perspective view showing the appearance of the embodiment of the present invention, in which a sprocket-side bearing of the output shaft of FIG. 1 is mounted on a bearing replacement device.

FIG. 3 is a perspective view of a partially broken work table used for bearing replacement in the output shaft of FIG. 1, showing one embodiment of the present invention.

4 shows an embodiment of the present invention and is an exploded perspective view of a main part of the bearing replacement device of FIG. 2;

5 is a perspective view showing an embodiment of the present invention, in which the brake drum-side bearing of the output shaft of FIG. 1 is mounted on a bearing replacement device.

6 shows an embodiment of the present invention and is an exploded perspective view of a main part of the bearing replacement device of FIG. 5;

FIG. 7 is an enlarged bottom view of the first ring member fitted to the upper end of the worktable, showing one embodiment of the present invention.

8 is a sectional view taken along line VII-VII of FIG.

9 shows an embodiment of the present invention and is an enlarged top view of a second ring member fixed on the first ring member of FIG. 7;

FIG. 10 is a sectional view taken along line XX of FIG. 9;

FIG. 11 shows an embodiment of the present invention and is a top view of the first support plate of the hiring.

FIG. 12 shows one embodiment of the present invention, and is a top view of the horseshoe-shaped member of the first support plate.

13 is a arrow P ₁ view of figure 12.

FIG. 14 shows one embodiment of the present invention, and is a top view of an assembly member of the first support plate.

It is an arrow Y ₁ view of Figure 15 Figure 14.

It is an arrow X ₁ view of Figure 16 Figure 14.

FIG. 17 is a diagram illustrating an embodiment of the present invention and illustrating an assembled state of a hiring portion.

FIG. 18 is an exploded perspective view showing a bearing replacement device for replacing a sprocket side bearing of the intermediate shaft in FIG. 1 according to the embodiment of the present invention.

19 shows one embodiment of the present invention, and is an external perspective view when the sprocket-side bearing of the intermediate shaft in FIG. 1 is mounted on a bearing replacement device.

FIG. 20 is a perspective view of a partially broken work table used for replacing a sprocket-side bearing of the intermediate shaft in FIG. 1 according to the embodiment of the present invention.

21 shows an embodiment of the present invention and is an exploded perspective view of a main part of a bearing replacement device when replacing a bearing on the brake drum side of the intermediate shaft in FIG. 1. FIG.

22 shows an embodiment of the present invention and is an exploded perspective view of a bearing replacement device for replacing a sprocket-side bearing of the input shaft in FIG. 1. FIG.

FIG. 23 is a perspective view showing an embodiment of the present invention, in which the sprocket-side bearing of the input shaft in FIG. 1 is mounted on a bearing replacement device.

FIG. 24 is a perspective view of a partly broken work table showing an embodiment of the present invention and used for replacing a sprocket-side bearing of the input shaft in FIG. 1;

25 shows an embodiment of the present invention and is an exploded perspective view of a main part of a bearing replacement device when replacing a brake drum-side bearing of the input shaft in FIG. 1. FIG.

26 shows an embodiment of the present invention, and is an external perspective view when the brake drum side bearing of the input shaft in FIG. 1 is mounted on a bearing replacement device.

27 shows an embodiment of the present invention and is a perspective view of a partially broken work table used for replacing a bearing on the brake drum side of the intermediate shaft in FIG. 1;

[Explanation of symbols]

 Reference Signs List 6 Input shaft 7 Intermediate shaft 8 Output shaft 10 Bearing replacement device for output shaft 11 Evacuation 12 Work table 13 Hydraulic pump 14 First support plate 15 Hydraulic ram 16 Second support plate 17, 17a, 17b, 17c Through bolt 18 Substrate 19 Cylindrical body 19a, 19b Opening 20 Ring-shaped pedestal 21a Ring groove 21 First ring member 22 Second ring member 24 Horseshoe-shaped member 26 Assembly member 27 First nut 28 Second nut 29 Third nut 31 Ram cover 32 Connecting member 33 Work table 34 Substrate 35 Cylindrical body 35a, 35b, 35c, 35d, 35f Opening 36 First ring body 38 Second ring body 39 Insert base 40 Insert cylindrical body 41 Split ring body 42, 43 Insert base 44 Insert cylindrical body

Claims (1)

[Claims] 1. A first support plate on which a shaft having a bearing press-fitted and fixed to the outer periphery is fitted and the bearing is mounted, and a first support plate is located above the first support plate, and
A second support plate for supporting the hydraulic ram, and a plurality of through bolts for integrating the second support plate and the first support plate while holding them at a predetermined interval;
In a bearing replacement device configured to remove the bearing from the shaft by placing the recruit on a cylindrical work table and pressing the shaft downward with the hydraulic ram, A first ring member made of a steel plate, which is mounted on a worktable via at least a plurality of ring-shaped pedestals, and wherein the plurality of ring-shaped pedestals are provided with a ring groove fitted to an upper end of the worktable. And a wooden second ring member fixed on the first ring member.