JPH0649554B2 - Handrail drive for passenger conveyor - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a handrail drive device for passenger conveyors such as elevators and moving passages.

[Conventional technology]

FIG. 4 is a schematic vertical sectional side view of a conventional handrail drive device for passenger conveyors disclosed in Japanese Utility Model Laid-Open No. 59-97977. In FIG. 4, 1 is a truss that forms the skeleton of the passenger conveyor, 2 is a balustrade fixed to the truss 1 and 3
Is a handrail arranged on the outer periphery of the balustrade 2, 4 is a step which is connected endlessly and moves along the step rails 5 and 6, and 7 is an electric motor and a speed reducer installed in the machine room on the upper floor of the truss 1. ，
A drive machine composed of an electromagnetic brake, 8 is an endless step chain connecting the steps 4, and 9 is a chain gear mechanism for driving the step 4 via the step chain 8 to which driving force is transmitted from the drive machine 7. Is.

Then, the handrail drive device 10 is coaxial with the final stage chain gear 12 of the handrail drive chain gear mechanism 11 to which the driving force is transmitted from the drive machine 7 via the chain gear mechanism 9 for driving the steps 4. 13 is fixed, and the drive roller 13 is the truss 1.
Mounted on the handrail drive device main body 15 fixed to the drive roller 1 and the pressure roller 14 is suspended on the device main body 15.
The moving handrail 3 is sandwiched by the pressure roller 14 and the pressure roller 14, and the driving force is transmitted from the drive roller 13 to the moving handrail 3 so that the handrail 3 travels in synchronization with the step 4.

Further, in the handrail driving device, as shown in FIG. 5, the pressure roller 14 is rotatably supported by a roller shaft 17 fixed to a substantially angled bracket 16 via a ball bearing 19.
A pressure roller assembly 20 in which a guide pin 18 fixed to the bracket 16 by press fitting or welding is projected, and a flat spring receiving member 21 fixed to the handrail driving device main body 15 by welding. And the spring receiving member 2
1, a spring 22 supported via upper and lower spring seats 24, 24, a bracket 16 of the pressure roller assembly 20, holes 16a and 21a of a spring receiving member 21, a spring seat 24, and a spring 2
2, a fastening member 26 including a fastening bolt 23 penetrating the spring seat 24 so as to be axially movable from below, and a double nut 25 fastened to a tip portion protruding from the upper spring seat 24 of the fastening bolt 23, The guide pin 18 is swingably fitted into the guide hole 21b of the spring receiving member 21. In addition, the spring receiving member 21 is the handrail drive device main body 15
It is reinforced by a reinforcing plate 27 fixed to the.

In the handrail drive device configured as described above, the pressure roller 14 is biased toward the drive roller 13 by the spring force of the spring 22,
By sandwiching the return path of the moving handrail 3 with these rollers 14 and 13, a frictional force suitable for transmitting a driving force from the driving roller 13 to the moving handrail 3 is obtained.

[Problems to be solved by the invention]

The handrail driving device for the passenger conveyor as described above is fixed to the bracket 16 of the pressure roller assembly 20 by press-fitting or welding because the thickness (t) of the moving handrail 3 varies by about 0.5 mm. The guide pin 18 reciprocates in the vertical direction (axial direction), and the wall of the guide hole 21b of the spring receiving member 21 rubs due to sliding due to the reciprocal movement of the guide pin 18. Therefore, it is necessary to replace the spring bearing member 21, but since the dimension (l) from the handrail drive device body 15 to the fastening bolt 23 is long, the spring bearing member 21 is fixed to the device body 15 by welding. Therefore, the apparatus main body 15 must be replaced together with the spring receiving member 21, which causes a problem of high cost and long time.

The present invention solves the above problems, a spring receiving member can be easily attached and detached in a short time, the spring receiving member can be replaced, and the handrail drive device for a passenger conveyor can be reduced in cost required for replacement. It is intended to be provided.

[Means for solving problems]

In the handrail drive device for a passenger conveyor according to the present invention, a spring receiving member is detachably fixed to the tip of a drive roller shaft fixed to the main body of the handrail drive device by a bolt.

[Work]

The handrail drive device for a passenger conveyor according to the present invention can be easily removed from the handrail drive device main body side by removing the bolt when replacing the spring receiving member, and can also be attached, without replacing the device main body. Only the splash receiving member can be replaced in a short time.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS.

In FIGS. 1 to 3, the same reference numerals as those in FIGS. 4 and 5 indicate corresponding parts, and 28 is a drive roller shaft welded and fixed to the main body 15 of the handrail drive device. An upright portion 21c located on the center side of the spring receiving member 21 in the axial direction of the passenger conveyor is detachably fixed by a bolt 29 to the tip of the. Further, the standing portion 21c is the sum of the height dimensions of the spring 22 and the spring seats 24, 24 when in use (h).
Is projected on the bottom plate 21d with a height dimension equal to. A final stage chain gear 12 of the handrail drive chain gear mechanism 11 and a drive roller 13 are integrally rotatably supported by bearings 30 on the drive roller shaft 28. 16e is an upper plate 16 of the bracket 16 provided on the pressure roller assembly 20.
c A tip portion, that is, a notch portion that opens on the side opposite to the side plate 16d and extends in the width direction of the passenger conveyor. A fastening bolt 23 is axially movably engaged with the notch portion 16e.
Reference numeral 31 denotes an L-shaped detent plate to which the head 23a of the fastening bolt 23 is fixed by welding, and the head 23a of the fastening bolt 23 supports the lower surface of the upper plate 16c of the bracket 16 via the detent plate 31. The pressure roller assembly 20 is suspended by a spring receiving member 21 via a spring 22. Also,
The side plate 16d of the bracket 16 is disposed closer to the center in the width direction of the passenger conveyor than the moving handrail 3. In addition, 32
Is an endless chain that transmits the driving force to the final stage chain gear 12 of the handrail drive chain gear mechanism 11, 33 is a tension adjusting chain gear of the endless chain 32, and the mounting plate 34 to which the chain gear 33 is pivotally mounted is It is fixed to the device body 15 side by a bolt 35 so that the vertical position can be adjusted, and the tension adjusting chain gear 33 is arranged at the center of the device body 15 in the longitudinal direction. In addition,
The structure of this embodiment other than that described above is the same as that of the conventional handrail drive device shown in FIGS. 4 and 5.

In the handrail drive device of the embodiment configured as described above, when the wall of the guide hole 21b of the spring receiving member 21 is worn by sliding with the guide pin 18, the drive roller shaft fixed to the device main body 15 is used. By removing the bolt 29 from 28,
The spring receiving member 21 can be removed, and the rising plate 21c of the new spring receiving member 21 is brought into contact with the tip end surface of the drive roller shaft 28 and tightened to the drive roller shaft 28 with the bolt 29, so that the spring receiving member 21 can be removed. It can be fixed to the drive roller shaft 28.

Further, conventionally, as shown in FIG.
Since the spring pressure of the pressure roller 14 is set by measuring the height of the roller, that is, the axial length, the pressure is excessive due to misreading of the scale of the steel scale, and the moving handrail 3 is peeled off. However, the pressurizing force becomes too small and the canvas of the drive roller 13 and the moving handrail 3 is worn, but these problems can be solved in this embodiment. That is, in this embodiment, as shown in FIG. 3, the height dimension of the upright portion 21c of the spring receiving member 21 is equal to the spring 22 and the spring seat 24 during use.
Since it is equal to the sum (h) of the height dimensions of 24, it is possible to judge the quality of the spring pressure setting by the height of the spring 22 just by applying a steel scale, and the workability is improved and the spring pressure setting is set. You can prevent mistakes.

Further, in this embodiment, the side plate 16d bent downward from the upper plate 16c of the bracket 16 of the pressure roller assembly 20.
Is located on the center side in the width direction of the passenger conveyor with respect to the moving handrail 3, and the notch 1 with which the fastening bolt 23 of the fastening member 26 is engaged.
Since 6e is opened to the outer side in the width direction of the passenger conveyor on the side opposite to the side plate 16d of the upper plate 16c, the bracket 16 is pulled out from the center side in the width direction to disengage the notch 16e from the fastening bolt 23. The pressure roller assembly 20 can be removed. And in this case, the fastening bolt 23
The roller assembly 20 can be removed without being pulled out from the spring receiving member 21 fixed to the apparatus main body 15 while leaving the spring 22 and the spring seats 24, 24 on the spring receiving member 21. In addition, when mounting the new roller assembly 20, attach the notch 16e of the bracket 16 to the fastening bolt 2
3 and insert the upper plate 16c of the racket 6 into the fastening bolts 23
By pushing the bracket 6 outward from the widthwise center side toward the fastening bolt 23 so that the rotation stop plate 30 is supported on the head 23a of the new roller assembly 20, the new roller assembly 20 is moved to the spring 2.
It can be attached in a state of being suspended by the spring receiving member 21 by means of the fastening member 26 through 2. Therefore, when the roller assembly 20 is replaced, the attachment / detachment work can be easily performed in a short time. Further, since the side plate 16d provided on the bracket 16 of the pressure roller assembly 20 is located closer to the center in the width direction of the passenger conveyor than the moving handrail 3, the head portion 2 of the fastening bolt 23 is located.
Although the detent wrench to be engaged with 3a cannot be inserted, the head 23a is welded to the detent plate 31 and the detent plate 31 is engaged with the upper plate 16c of the bracket 16, so that the nut 2
The operation of turning 5 with a spanner to adjust the spring force of the spring 22 can be easily performed without any trouble.

〔The invention's effect〕

As described above, according to the present invention, the spring receiving member is detachably fixed to the tip end of the drive roller shaft fixed to the handrail driving device main body by the bolt, so that the spring receiving member can be easily attached and detached in a short time. Further, since only the spring receiving member can be replaced without replacing the device body, it is possible to provide the handrail drive device for the passenger conveyor, which can reduce the cost required for replacement as compared with the conventional one.

[Brief description of drawings]

FIG. 1 is an enlarged side view of a portion corresponding to part I in FIG. 4 showing a handrail driving device for a passenger conveyor according to an embodiment of the present invention, and FIGS. 2 and 3 are lines II-II in FIG. And III
-III sectional view, FIG. 4 is a schematic vertical sectional side view showing a conventional handrail drive device for a passenger conveyor, and FIG. 5 is a view corresponding to FIG. 3 of the handrail drive device shown in FIG. 1 ... Truss, 3 ... Moving handrail, 7 ... Driving machine, 13 ...
... drive roller, 14 ... pressure roller, 15 ... handrail drive device main body, 21 ... spring receiving member, 21c ... standing portion, 2
2 ... Spring, 23 ... Fastening bolt, 24 ... Spring seat, 2
5 ... Nut, 26 ... Fastening member, 28 ... Drive roller shaft, 29 ... Bolt. The same reference numerals in the drawings indicate the same or corresponding parts.

Claims (2)

[Claims] 1. A drive roller driven by a drive machine,
A pressure roller biased to the drive roller side by a spring and a drive roller shaft fixed to a truss of a passenger conveyor and rotatably supporting the drive roller are fixed, and the pressure roller is further suspended. With a handrail drive device body,
In a handrail drive device for a passenger conveyor that drives the moving handrail by sandwiching the return path of the moving handrail with a driving roller and a pressure roller, for supporting the spring and suspending the pressure roller with a fastening member via the spring. 7. The handrail drive device for a passenger conveyor, wherein the spring receiving member is detachably fastened to the tip of the drive roller shaft with a bolt. 2. A handrail for a passenger conveyor according to claim 1, wherein the spring receiving member has a raised portion protruding above the bottom plate so as to have a height equal to the height of the spring and the spring seat when in use. Drive.