JP2000026057A - Driven roller removing apparatus for passenger conveyer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a driven roller removing apparatus for passenger conveyer, capable of drawing out a roller shaft easily using a working space on a tread side. SOLUTION: An end part on a tread side of a roller shaft is disposed between grasping parts 12, 14 formed at the opposite part of grasping bodies 1, 2 and is grasped firmly by tightening bolts 3. A frame body 6 is arranged while a rod 5 having a threaded part is being inserted in the hole part 16 of the frame body 6. After that, a threadedly engaged body 7 screwed onto the threaded part of the rod 5 is tightened, and the rod 6 and the roller shaft are drawn out using the propelling force of a screw.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driven roller removing device for a passenger conveyor used for pulling out a roller shaft of a driven roller.

[0002]

2. Description of the Related Art A passenger conveyor has moving handrails that move in synchronization with a plurality of steps that move up and down, and a driving device for the moving handrails includes a plurality of motors that are driven by a motor that drives the steps. The movable handrail is configured to be pressed and driven by a plurality of drive rollers and the same number of driven rollers driven by the driven rollers. The driven roller is mounted on a shaft of the driven roller via a bearing, and the bearing or the like needs to be replaced due to its aging.

[0003] Next, the above-described moving handrail driving device will be described with reference to the drawings. FIG. 3 is a side view showing a driving device of a moving handrail in a general passenger conveyor, FIG. 4 is a sectional view of a driven roller portion in the driving device shown in FIG. 3, and FIG. 5 is a driving device shown in FIG. It is sectional drawing of another driven roller part in an apparatus. A plurality of steps 21 circulating between floor entrances (not shown) are connected endlessly,
A balustrade 22 is erected on both sides of the step 21.
An endless moving handrail 23 running along the balustrade 22 is arranged above and below the balustrade 22, and a driving device 24 for driving the moving handrail 23 is formed at a lower portion. The lower moving handrail 23 is sandwiched between a driving roller 25 and a driven roller 26 that rotate at the same speed as the step 21, and the driven roller 26 is rotatably fixed in position by a bracket 27, and the driving roller 25 is a driving device. It is rotatably fixed to 24 plates 31. This plate 3
1 is configured to be vertically movable with respect to the bracket 27 by a slide shaft 32. The driven roller 26 is mounted via a bearing 10 on a roller shaft 28 rotatably supported by a bracket 27 as shown in FIG. In order to prevent the roller shaft 28 from slipping out toward the tread plate 21, a stopper 29 fixed with a screw 30 is provided on the tread plate 21 side of the roller shaft 28. FIG. 5 is an enlarged view showing the driven roller 26 at another position. In order to prevent the roller shaft 28 from slipping out to the stepping plate 21 side, here, a large-diameter nut 33 is provided on the back surface side of the bracket 27 of the roller shaft 28. Is provided.

In a conventional passenger conveyor, a moving handrail 2
When the bearing 10 of the driven roller 26 and the driving roller 25 constituting the driving device 24 of the third embodiment is replaced, for example, the roller shaft 2 protruding toward the tread plate 21 side of the bracket 27 is used.
8 with pliers and pull out, or apply for Japanese Patent Application No. 8-24.
As described in Japanese Patent No. 0702, a method is employed in which a hiring having a protruding shaft that abuts on the side surface of the roller shaft 28 from the plate 31 side of the driving device 24 is arranged, and the roller shaft 28 is pushed out by this hiring.

[0005]

However, in the above-described conventional method, the fitting between the bearing 10 of the driven roller 26 and the bracket 27 for fixing the positions of the driven roller 26 and the roller shaft 28 of the driven roller 26 is tight. In this case, the pliers cannot be pulled out because the force for pinching the roller shaft 28 is weak. On the other hand, in the method in which the roller shaft 28 is pushed out by using the hiring, the work space on the plate 31 side is narrower than the work space on the tread plate 21 side, so that workability is poor and the plate 31 can be moved up and down. Since the slide shaft 32 is located in the vicinity, it may not be possible to attach a boss having a projection shaft that comes into contact with the end face of the roller shaft 28 from the plate 31 side.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a driven roller removing device for a passenger conveyor which enables a roller shaft to be easily pulled out by using a work space on a tread plate side.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a roller shaft having an end protruding and supported on a stepping plate side of a bracket, and a driven shaft which is fitted on the shaft and guides a moving handrail. A driven roller removal device for a passenger conveyer that includes a roller and pulls out the roller shaft, a pair of gripping members having a gripping portion capable of gripping an end of the roller shaft on the side of the tread plate at an opposing portion thereof; A bolt that tightens the gap and grips the end of the roller shaft on the tread plate side, a rod having a threaded portion fixed to one of the grips, and a frame having a hole into which the rod is inserted, It is characterized by comprising a threaded body which is screwed to the rod-shaped body and tightened to apply a screw driving force between the frame and the rod-shaped body to pull out the roller shaft.

In the driven roller removing device for a passenger conveyor according to the present invention, as described above, the screw body is tightened by tightly holding the end portion of the roller shaft on the tread plate side between the pair of gripping members, and the frame member and the rod-shaped member are removed. Since the driving force of the screw is given between the bodies, and the driving force drives the roller shaft in the pulling-out direction, the end of the roller shaft protruding toward the tread plate side is strongly clamped, and the work space on the tread plate side is provided. The roller shaft can be easily extracted with only the work.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a driven roller removing device for a passenger conveyor according to an embodiment of the present invention. The grip 1 has a roller shaft grip 12 at the center facing portion, and has through holes 11 on both sides of the grip 12. The detachable gripping body 2 that forms a pair with the gripping body 1 has a roller shaft gripping portion 1
4 with screw holes 13 on both sides of
And a flat grip 15 on the back surface of the grip 14. With the gripping portions 12 and 14 of the gripping bodies 1 and 2 forming a pair facing each other, the two through holes 11 and the two screw holes 1 are formed.
When the pair of bolts 3 are inserted into the through holes 11 and screwed into the screw holes 13, the grip portions 12 and 14 are tightened, and the roller shaft is sandwiched between the two. Can be included. The gripper 1 is formed by welding and fixing a fitting portion 8 to which a rotating means such as a spanner or the like can be fitted, and a rod-shaped body 5 having a threaded portion.

There is a gate-shaped frame 6 used in combination with the gripping body 18, and a hole 16 through which the rod-shaped body 5 of the gripping means 18 penetrates is formed at the center of the frame 6, and at both ends. Is formed with a leg portion 17 which comes into contact with a bracket described later. After the leg 17 of the frame 6 is brought into contact with the bracket and the rod 5 of the gripping means 18 is inserted into the hole 16, the screw 7 at the insertion end of the rod 5 is screwed into the threaded member 7 to remove the driven roller. The device is in the assembled state. When the screw body 7 is tightened in this state, the gripping means 18 can be driven toward the opposite leg 17 by the propulsive force of the screw. The shape and size of the screw body 7 can be set arbitrarily.

Next, the operation of removing the roller shaft using the above-described driven roller removing device will be described. Here, as shown in FIG. 3, the passenger conveyor has the same configuration as the conventional one, and the driven roller 26 will be described as having the same configuration as that of FIG. First, the screw 30 screwed with the bracket 27 shown in FIG.
Remove the stopper 29 for preventing the escape of 8.

Next, as shown in FIG. 2, the gripper 18 shown in FIG. 1 is attached to the end of the roller shaft 28 on the side of the tread plate 21. The end has a semicircular cross section. In this case, the gripper 2 shown in FIG.
Is reversed so that the flat gripping portion 15 on the back surface faces the gripping portion 12 of the gripping body 1, and the gripping portions 12,
An end face having a semicircular cross section of the roller shaft 28 is disposed between the rollers 15. In this state or prior to this, the bolt 3 inserted into the through hole 11 is screwed into the screw hole 13 and the bolt 3 is tightened to strongly grip the roller shaft 28 between the gripping bodies 1 and 2.

At this time, since the rod-like body 5 is in a state of being established on the side of the tread plate 21 of the bracket 27, the hole 16 of the gate-shaped frame 6 is inserted into this rod-like body 5 while being inserted.
The leg 17 of the frame 6 is brought into contact with the side surface of the bracket 27 on the side of the tread plate 21 as shown in FIG. After the leg 17 of the frame 6 comes into contact with the side surface of the bracket 27 on the side of the tread plate 21, the frame 6
When the screw 7 is screwed into the end of the rod 5 coming out of the hole 16 of the above, and the screw 7 is tightened, a rightward force is applied to the rod 5 by the propulsive force of the screw. Will be.
Therefore, the roller shaft 28 held by the holding bodies 1 and 2
The force is also applied in the same direction, the roller shaft 28 can be pulled out toward the tread plate 21 by tightening the screw body 7, and the driven roller 26 can be removed. In this manner, the roller shaft 28 can be extracted using only the work space on the side of the tread plate 21.

Next, a case where the driven roller 26 shown in FIG. 5 is removed will be described. Since the end of the roller shaft 28 protruding toward the tread plate 21 from the bracket 27 is circular in cross section, as shown in FIG.
After the bolts 3 are inserted into the through holes 11, the bolts 3 are lightly screwed into the screw portions 13. Then, after removing the nut 33 shown in FIG. 5, the tread plate 2 of the roller shaft 28 is held between the grippers 12 and 14 of the grippers 1 and 2.
The end on one side is gripped, and the bolt 3 is tightened to be held firmly. Subsequent work is performed in the same procedure as that described with reference to FIG. 4, and the driven roller 26 can be removed by pulling out the roller shaft 28 toward the tread plate 21.

As described above, the driven roller 2 having a different structure shown in FIGS.
6 can be applied. In another usage example of the driven roller removing device 9, the roller shaft 2 is
After firmly holding the end of the rod 8, a rotating means such as a spanner (not shown) may be fitted to the fitting portion 8, and the rod 5 may be rotated via the rotating means. This is effective because it is possible to remove the roller shaft 28 by slightly rotating it when the roller shaft 28 is firmly attached to the bracket 27.

[0016]

As described above, in the driven roller removing device for a passenger conveyor according to the present invention, when removing the driven roller, the end of the roller shaft on the side of the tread plate is gripped by the gripping means, and the frame combined with the gripping means is used. Since the pulling force is applied to the gripping means and the roller shaft by the propulsive force of the screw between the body and the body, the roller shaft can be pulled out only by the work of the work space on the tread plate side.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a driven roller removing device of a passenger conveyor according to an embodiment of the present invention.

FIG. 2 is a side view showing an attached state of the driven roller removing device shown in FIG.

FIG. 3 is a sectional view of a main part showing a general passenger conveyor moving handrail driving device.

FIG. 4 is a sectional view of the driven roller shown in FIG. 3;

FIG. 5 is a cross-sectional view showing another driven roller.

[Explanation of symbols]

 1, 2 gripping body 3 bolt 5 rod-shaped body 6 frame 7 screwed body 8 fitting part 9 driven roller removal device 12, 14 gripping part 18 gripping means 26 driven roller 27 bracket 28 roller shaft

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takao Morimoto 4-8-17 Nishitenma, Kita-ku, Osaka-shi, Osaka F-term (reference) 3F321 AA02 AA09 CA48 HA06

Claims (3)

[Claims] 1. A driven roller of a passenger conveyer, comprising: a roller shaft having an end protruding and supported on a stepping plate side of a bracket; and a driven roller fitted on the shaft to guide a moving handrail, wherein the roller shaft is pulled out. In the removal device, a pair of grippers having a gripper capable of gripping the end of the roller shaft on the side of the tread plate on the opposing portion, and tightening the gap between these grippers to close the end of the roller shaft on the side of the tread plate. A bolt to be gripped, a rod having a screw portion fixed to one of the grips, and a frame having a hole into which the rod is inserted,
A driven roller removing device for a passenger conveyor, comprising: a screwed body that is screwed to the rod-shaped body and tightened to apply a screw driving force between the frame and the rod-shaped body to pull out the roller shaft. . 2. The passenger according to claim 1, wherein grips of different shapes are formed on the other gripping body at a portion facing the one gripping body and at a portion opposite to the gripping body. Conveyor driven roller removal device. 3. The driven roller removing device for a passenger conveyor according to claim 1, wherein a fitting portion is provided on the rod-shaped body, to which a rotating means for applying rotation can be fitted.