JPH11138460A - Bearing driving device of terminal gear of high lift type escalator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bearing driving device capable of easily and reliably pressing a bearing of a terminal gear in the desired position, and having simple structure. SOLUTION: A bearing driving device 1 is provided with a plurality of distance pieces 6 to be attached to a plurality of bearing cover attaching holes 5 formed on the end surface 3a of a housing 3 and on the outer sides in the radial direction from a bearing inserting hole 4, a driving fixture 8 having one end surface side to be hammered in a state where the other end surface having the outside diameter a little smaller than that of the bearing inserting hole 4 is brought in contact with the end surface 7a of a bearing 7, a driving fixture cover 10 to be fastened and fixed to a puerility of distance pieces 6 after being loosely fitted to the outer peripheral part of the driving fixture 8, and a supporting bar 11 for supporting the driving fixture 8 in hammering work.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for driving a terminal gear bearing for an ultra-high head escalator, which is particularly suitable for replacing a bearing of a terminal gear in an ultra-high head escalator.

[0002]

2. Description of the Related Art In a terminal gear of an escalator, a bearing serving as a bearing is incorporated in a predetermined space between a terminal gear shaft and a housing. When this bearing is worn out for a long period of use, a new bearing must be press-fitted into the installation space. Therefore, in the case of a relatively large bearing such as a bearing for an escalator terminal gear, which is likely to cause local biting called galling at the time of press-fitting, the end face of the bearing can be pressed uniformly. Means are required.

[0003] Conventionally, a hydraulic pump has been operated at the time of replacing the bearing of a terminal gear of an escalator.
A technique has been adopted in which a bearing is pressed into between a terminal gear shaft and a housing while a bearing is pushed by a hydraulic ram.

[0004]

However, in the case of an escalator having a very high head, the bearing of the terminal gear is considerably large.
It becomes difficult to apply the pushing pressure of the hydraulic ram uniformly to the entire end face of the bearing, and the bearing tends to be galled between the terminal gear shaft and the housing during press fitting. For this reason, conventionally, it has not been easy to properly install the terminal gear bearing at a desired position in an ultra-high head escalator.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems in the prior art, and has as its object to easily and reliably press-fit a bearing of a terminal gear into a desired position, and furthermore, has a simple structure, An object of the present invention is to provide a bearing driving device for a terminal gear for an escalator.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a bearing for a terminal gear shaft of an ultra-high head escalator, which is provided between a housing having a bearing insertion hole and the terminal gear shaft. As a bearing driving device for press-fitting into a predetermined installation space, the structure is attached to a plurality of bearing cover mounting holes formed radially outside the bearing insertion hole at the end face of the housing. A plurality of distant pieces, a driving staff whose outer diameter is slightly smaller than the bearing insertion hole and an end face of which is struck with one end face contacting the end face of the bearing; and an outer peripheral portion of the driving staff. A driving cover that is loosely fitted to the plurality of distant pieces and is fixed to the plurality of distant pieces; It was decided and a support member for supporting the.

[0007] When the bearing driving device constructed as described above is used, the housing is fitted in a state where the driving cover is fitted to the outer peripheral portion of the driving member whose one end surface is in contact with almost the entire end surface of the bearing. By using the bearing cover mounting hole of the above to fasten and fix the driving staff cover to the plurality of protruding distant pieces, the bearing and the driving staff can be held at predetermined positions. Therefore, by hitting the other end face of the hammer with a hammer or the like in this state, a uniform pushing pressure can be applied to the entire end face of the bearing, thereby preventing the occurrence of galling and moving the bearing to the terminal gear shaft and the housing. Can be easily and reliably press-fitted into the gap.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a state immediately before the bearing driving device according to the present embodiment is mounted and the press-fitting of a bearing is started. FIG. 2 is a rear view of FIG. 1 viewed from the direction of arrow X.

In these figures, a bearing driving device indicated generally by the reference numeral 1 comprises a bearing 7 serving as a bearing for a terminal gear shaft 2 of an ultra-high head escalator, and a housing 3 having a bearing insertion hole 4 and a terminal gear shaft 2. This is a device for press-fitting into a predetermined cylindrical installation space defined between the two. The bearing driving device 1 is provided with an end face 3 of the housing 3.
6a, six distant pieces 6 and the like attached to the bearing cover mounting holes 5 and the like formed at six positions radially outside the bearing insertion holes 4 and the outer diameter is smaller than that of the bearing insertion holes 4. One end face on the small front side
The other end side (rear side) is hit by the hammer 12 (see FIG. 3) in a state where it is in contact with the end face 7a.
And a driving cover 10 which is loosely fitted to an outer peripheral portion of the driving employee 8 and is fastened and fixed to each distant piece 6 or the like by a fastener 9 or the like. It is generally constituted by a support rod 11 which sometimes supports the hammering 8.

[0010] The structure of each part will be described in more detail. The hammer 8 has a shape as shown in a front view of FIG. 4 and a sectional view taken along the line V--V in FIG.
The supporting rod 11 can be screwed into the bearing, and the outer diameter of the flange portion 8b formed on the front side is slightly smaller than that of the bearing insertion hole 4, and the inner diameter is the outer diameter of the terminal gear shaft 2. It is set to be slightly larger than. As shown in FIG. 6, bearing cover mounting holes 5, 5a, 5b, 5c, 5d, 5e are formed on the end face 3a of the housing 3 outside the bearing insertion hole 4 in the radial direction. Bearing cover mounting hole 5
As shown in FIG. 2, long screw-shaped distant pieces 6, 6a, 6b, 6c, 6d, and 6e are attached to the elements 5 to 5e, respectively. Reference numerals 9, 9a, 9b, 9
Reference numerals c, 9d, and 9e denote fasteners such as nuts that fasten and fix the hammering cover 10 to the distant pieces 6 to 6e, respectively.

When the bearing 7 is driven in accordance with a work procedure described later, the bearing driving device 1 thus configured is defined between the housing 3 and the terminal gear shaft 2 as shown in FIG. The bearing 7 can be press-fitted into a certain predetermined installation space.

Next, with reference to the flowchart of FIG. 7, the operation of assembling the bearing 7 using the above-described bearing driving device 1 will be described in detail. First, as shown in step S1 of FIG. 7, the distant pieces 6 to 6e are attached to the housing 3 using the bearing cover attachment holes 5 to 5e of the housing 3. Next, as shown in step S2 of FIG. 7, a part of the bearing 7 is fitted into the bearing insertion hole 4 of the housing 3 and one end face of the front side of the driving tool 8 to which the support rod 11 is attached is attached. It is brought into contact with the end face 7a. Thereafter, as shown in step S3 of FIG. 7, the hammering cover 10 is fitted to the outer periphery of the hammering staff 8 while holding the hammering staff 8 by hand, and in this state, the cover 10 is fastened to the fasteners 9 to 9e. To fasten and fix to the distant pieces 6 to 6e. Finally, as shown in step S4 in FIG. 7, the hammer 12 hits the rear end of the hammer 8 with the hammer 12 while supporting the hammer 8 with the support rod 11, thereby the housing 3 and the terminal gear shaft 2. And press-fit 8 into the built-in space between.

As described above, in the present embodiment, the housing 3 is engaged with the driving cover 8 in such a manner that the driving cover 8 is brought into contact with the outer periphery of the driving head 8 in which one end face is in contact with almost the entire end face 7a of the bearing 7. Since the driving cover 10 is fastened and fixed to the protruding distant pieces 6 to 6e using the bearing cover mounting holes 5 to 5e, the bearing 7 and the driving staff 8 can be held at predetermined positions. Therefore, in this state, the other end of the hammer 8 is connected to the hammer 1.
2, a uniform pushing pressure can be applied to the entire end face 7 a of the bearing 7. Therefore, the bearing 7 can be moved between the terminal gear shaft 2 and the housing 3 while preventing galling. Press-fitting can be performed easily and reliably. Moreover, when the bearing 7 is press-fitted in this way, the hammer 8 can hit the back side while holding the hammer 1 by holding it with the support rod 11.
2. There is no need to worry about clapping your own hands, and the driving operation can be performed safely and quickly.

As described above, the driving tool 8 is designed such that the outer diameter of the collar portion 8b is slightly smaller than the bearing insertion hole 4 and the inner diameter is slightly larger than the outer diameter of the terminal gear shaft 2. Therefore, even if the position of the hammer 8 is slightly shifted when hitting with the hammer 12, no trouble such as damage to the terminal gear shaft 2 occurs.

[0015]

The bearing driving device for a terminal gear for an ultra-high head escalator according to the present invention is embodied in the form described above, and has the following effects.

A plurality of protrusions are provided by using a bearing cover mounting hole of a housing in a state where a driving cover is fitted to an outer peripheral portion of the driving member whose one end surface is in contact with almost the entire end surface of the bearing. When the hammer cover is fastened and fixed to the distant piece, the bearing and the hammer can be held at a predetermined position.In this state, if the other end face of the hammer is hit with a hammer or the like, the entire end face of the bearing is evenly distributed. A high indentation pressure can be applied. Therefore, the bearing can be easily and reliably press-fitted between the terminal gear shaft and the housing, while having a simple configuration.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a state immediately before starting press-fitting of a bearing by mounting a bearing driving device according to an embodiment of the present invention.

FIG. 2 is a rear view of FIG. 1 as viewed from an arrow X direction.

FIG. 3 is an explanatory view showing a state where press-fitting of a bearing is completed using the bearing driving device shown in FIGS.

FIG. 4 is a front view of the driving staff shown in FIGS.

FIG. 5 is a sectional view taken along line VV in FIG. 4;

FIG. 6 is an explanatory diagram showing end shapes of a housing and a terminal gear shaft shown in FIGS.

FIG. 7 is a flowchart showing a work procedure in one embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Bearing driving device 2 Terminal gear shaft 3 Housing 4 Bearing insertion hole 5, 5a, 5b, 5c, 5d, 5e Bearing cover mounting hole 6, 6a, 6b, 6c, 6d, 6e Distant piece 7 Bearing 8 Driving employment 9, 9a, 9b, 9c, 9d, 9e Fastener 10 Driving cover 11 Support rod 12 Hammer

Claims (1)

[Claims] 1. A device for press-fitting a bearing serving as a bearing of a terminal gear shaft of an ultra-high head escalator into a predetermined mounting space between a housing having a bearing insertion hole and said terminal gear shaft, A plurality of distant pieces attached to a plurality of bearing cover mounting holes formed radially outward of the bearing insertion hole at an end surface of the housing; and one having an outer diameter slightly smaller than the bearing insertion hole. A driving tool whose other end face is struck while the end face is in contact with the end face of the bearing; and a driving cover which is loosely fitted to an outer peripheral portion of the driving tool and fastened and fixed to the plurality of distant pieces. And a support member for supporting the hammering during the hitting operation. Terminal gear bearing driving device.