JP2749465B2 - Bearing mounting device for passenger conveyor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearing mounting device for a passenger conveyor.

[0002]

2. Description of the Related Art A side view of a general passenger conveyor is shown in FIG. 4. A truss 2 constituting a main frame is provided on both sides of a passenger conveyor 1, and near both ends of the truss 2,
A pair of terminal gears 3 for running the steps are arranged, and these terminal gears 3 are attached to a terminal gear shaft 10 as shown in FIG. 3, which is an enlarged front view of a main part of FIG. The terminal gear shaft 10 is supported on the truss 2 via a bearing 9. That is, the bearing box 4 is attached to the truss 2 with the bolts 16, and the bearing 9 is housed in the bearing box 4.
A terminal gear shaft 10 is carried on the bearing 9.

Generally, in order to ensure the safe operation of the passenger conveyor, when the cumulative operation time of the passenger conveyor reaches a predetermined time, the bearing 9 of the terminal shaft 10 is replaced with a new one. The conventional bearing removal device used for this operation is composed of a support plate 12, a mounting bolt 11 for the support plate 12, and a push-out bolt 13, as shown in FIG. After the shaft 10 is supported by the support 15 and the bolts 16 are all loosened and removed, the support plate 12 is fixed to the support portion 4a of the bearing 4 by the bolts 11, and then the screws provided on the support plate 12 The bolt 13 is screwed into the hole, and the end of the bolt 13 contacts the end face of the terminal gear shaft 10. In this state, when the bolt 13 is further screwed in using a spanner, the support plate 12
And the bearing box 4 housing the bearing 9 fixed to the support plate 12 can be removed from the terminal gear shaft 10 to which the terminal gear 3 is fixed toward the building wall 14 side.

In this manner, the bearing 9 is taken out of the terminal gear shaft 10 together with the bearing housing 4, and the new bearing 9 is mounted on the terminal gear shaft 10 by means of, for example, replacing the old bearing 9 with a new one and then pushing it in.

[0005] Incidentally, as this type of bearing removing device,
It is described in Japanese Utility Model Laid-Open No. 62-201675.

[0006]

However, depending on the building in which the passenger conveyor is installed, the distance A between the building wall 14 and the truss 2 shown in FIG. It may not be possible to attach to the shaft 10. Therefore, it is conceivable to remove a part of the left and right rails (not shown), the step chain, and other related parts, and use a lifting device to move the terminal gear shaft 10 to which the terminal gear 3 exceeding 300 kg is fixed, This is a method of lifting by a maintenance worker, removing the bearing 9 in this state, and attaching a new one. However, this requires a large amount of work, and it takes a long time even if a skilled worker performs the work.

An object of the present invention is to provide a bearing mounting device in a passenger conveyor which can mount a bearing in a short time without moving a terminal gear shaft even when there is not enough space on the side. .

[0008]

According to the present invention , a terminal gear having a plurality of openings is provided.
Terminal gear shaft attached to the
Mounting bearings on a passenger conveyor supported by laths
In the device, disposed on both sides of the terminal gear
Fix a pair of backings so as to close the opening,
Provide a hydraulic cylinder on the opposite side of the bearing from the bearing, and
A contact plate is provided in contact with the anti-terminal gear side,
The rod driven by the cylinder penetrates the above contact
And connected to the backing plate .

[0009]

In the bearing mounting device for a passenger conveyor according to the present invention, at the time of mounting the bearing, first, a contact plate is attached to the opening of the terminal gear, and the contact plate is brought into contact with the end surface of the new bearing on the side opposite to the terminal gear. Then, connect the rod of the hydraulic cylinder provided on the opposite bearing side of the backing plate to the backing plate, operate the hydraulic cylinder and pull the backing plate to the terminal gear side via the rod, then press the bearing into the terminal gear shaft. can do. Since only the backing plate is on the side opposite to the terminal gear of the bearing, it can be configured without moving the terminal gear shaft even if the gap between the building and the building is narrow. is there.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partial sectional front view of a bearing mounting device in a passenger conveyor according to an embodiment of the present invention , and FIG. 2 is a main part of FIG .
It is an expanded sectional view . As shown in these figures, a plurality of openings 3A are formed in the terminal gear 3, is this
1 on both sides of the motor Minarugiya 3 utilizing et openings 3A
A pair of buckles 17 are arranged, and these buckles 17 are fastened to the terminal gear 3 by bolts 24 so as to cover the opening 3A . Each of the these straps 17 opening 17a is formed, a series of through holes are formed by the openings 3A of the openings 17a and the terminal gear 3. A hydraulic cylinder 19, for example, a center-hole type hydraulic cylinder is provided on the right side, which is opposite to the bearing of the right pad 17 in the figure, and the hydraulic cylinder 19 and the pad 17 come into spherical contact. I have. Hydraulic cylinder 1
Rod 20 connected to a piston driven by 9
1 penetrates a through hole formed by the backing plate 17 and the terminal gear 3, and has a self-contained joint 21 in the middle, and the backing plate 1 shown in FIG.
8 is connected using a screw hole 18b. The abutment plate 18 is arranged in a narrow space of the terminal gear 3 of the truss 2 and is connected to the rods 20 of the plurality of hydraulic cylinders 19 having the same structure as the hydraulic cylinder 19 described above. Each of these hydraulic cylinders 19 is connected to a pressure supply 23. There is a cylindrical portion 18a at the center of the backing plate 18,
A bearing 9 is provided on the end face of the cylindrical portion 18a on the terminal gear 3 side.
Is in contact.

Next, the mounting operation of the bearing 9 will be described.
First, a pair of supports 17 is provided in the opening 3A of the terminal gear 3.
And fix it by tightening with bolts 24. Also bearing box 4
The bearing 9 to be press-fitted is placed inside the bearing, and the bearing 9 is positioned so as to contact the end of the terminal gear shaft 10 with the cylindrical portion 18a of the backing plate 18 in contact with the end face of the bearing 9, and is manually placed. The rod 20 is screwed into the screw hole 18b of the backing plate 18 so that the rod 20 is connected to the backing plate 18, and the hydraulic cylinder 19 side is in the state shown in FIG. Thereafter, hydraulic pressure is sent from the pressure supply source 23 to both hydraulic cylinders 19, the contact plate 18 is moved to the terminal gear 3 side via the rod 20, and the bearing 9 is connected to the bearing box via the cylindrical portion 18 a of the contact plate 18. 4 together with the terminal gear 3 and press-fit into the terminal gear shaft 10. When the bearing 9 is moved to a predetermined position, the mounting of the bearing 9 is completed, and the bearing box 4 is fixed to the truss 2 with the bolt 16, and thereafter, the hydraulic cylinder 19 and the rod 2
0, the work of removing the backing plate 18 and the backing plate 17 is completed.

According to the above-described embodiment, the bearing 9 can be mounted in a short time without lifting or significantly moving the terminal gear shaft 10. In particular, as shown in FIG.
Since the space between them is a spherical joint and the universal joint 21 is provided in the middle of the rod 20, even if the position on the hydraulic cylinder 19 side is slightly deviated from the position of the rod 20 connected to the contact plate 18, the contact plate 18 Can be applied in parallel with the terminal gear shaft 10 and evenly, and the bearing 9 can be press-fitted without congestion.

[0013]

As described above, according to the present invention, the force from the hydraulic cylinder can be transmitted to the contact plate using the opening of the terminal gear, and a sufficient space is provided on the side of the passenger conveyor. Even when there is no bearing, the bearing can be mounted in a short time without moving the terminal gear shaft.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional front view showing a bearing mounting device in a passenger conveyor according to one embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a main part of FIG.

FIG. 3 is a front view of a conventional bearing removal device.

FIG. 4 is a side view showing a general passenger conveyor.

[Explanation of symbols]

2 Truss 3 Terminal gear 3A opening 4 Bearing box 17 Backing plate 18 Backing plate 19 Hydraulic cylinder 20 Rod 21 Universal joint 23 Hydraulic pressure supply source

Claims (2)

(57) [Claims] 1. A mounting apparatus of the bearing in a passenger conveyor, which is supported by the truss via a terminal gear shaft terminal gear is attached a bearing having a plurality of openings, are arranged on both sides of the upper SL terminal gear
A pair of backings are fixed so as to cover the opening , and
A hydraulic cylinder is provided on the opposite bearing side of the contact metal, a contact plate is provided in contact with the opposite terminal gear side of the bearing, and a rod driven by the hydraulic cylinder penetrates the contact metal through the contact metal. A bearing mounting device for a passenger conveyor, wherein the bearing mounting device is connected to a plate. 2. A bearing for a passenger conveyor according to claim 1, wherein a connecting portion between said pad and said hydraulic cylinder is a spherical joint, and a universal joint is provided between said rods. Mounting device.