JPH0649555B2 - 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. 5 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. 5, 1 is a truss that forms the skeleton of a passenger conveyor, 2 is a balustrade fixedly installed on the truss 1, 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 between the moving handrail 3 and the pressure roller 14 and the driving force is transmitted from the drive roller 13 to the moving handrail 3 so that the moving handrail 3 travels in synchronization with the step 4.

Further, in the handrail drive device, as shown in FIG. 6, the pressure roller 14 is rotatably supported via a ball bearing 19 on a roller shaft 17 in which the pressure roller 14 is fixed to a substantially angled bracket 16. , The guide pin 1 on the bracket 16
A pressure roller assembly 20 having a protruding portion 8 and a substantially angle-shaped spring receiving member 2 fixed to the handrail driving device body 15.
1, the spring 22 supported on the spring receiving member 21 via the upper and lower spring seats 24, 24, the bracket 16 of the pressure roller assembly 20, the holes 16a and 21a of the spring receiving member 21, the spring seat 24, and the spring. 22 and a fastening member 26 including a fastening bolt 23 penetrating the spring seat 24 movably in the axial direction 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 slidably fitted in the guide hole 21b of the spring receiving member 21.

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. In the bracket 16 of the pressure roller assembly 20, the side plate 16d is bent downward at a right angle from the outside of the upper plate 16c in the passenger conveyor width direction,
A roller shaft 17 protruding toward the center in the width direction is fixed to the side plate 16d.

[Problems to be solved by the invention]

In the handrail driving device for the passenger conveyor as described above, it is necessary to replace the pressure roller assembly 20 when the pressure roller 14, the ball bearing 19, and the guide pin 18 are worn or damaged, but in the conventional handrail driving device, A fastening member 25 including a fastening bolt 23, a nut 25 and the like when the pressure roller assembly 20 is removed.
Need to be removed from the spring receiving member 21, and when the pressure roller assembly 20 is attached, the spring pressure of the spring 22 must be readjusted, so that the attaching and detaching work of the pressure roller assembly 20 is troublesome. There was a problem that it took a long time.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and provide a handrail drive device for a passenger conveyor that allows the pressure roller assembly to be easily attached and detached for a short period of time, such as when it is replaced.

[Means for solving problems]

A handrail drive device for a passenger conveyor according to the present invention includes a fastening member movably mounted in a spring receiving member provided on a main body of the handrail drive device via a spring, and a notch formed in a bracket of a pressure roller assembly. Is releasably engaged and supported, and the pressure roller is suspended on the apparatus main body side.

[Work]

In the handrail drive device according to the present invention, when the pressure roller assembly is replaced, the bracket of the pressure roller assembly is pulled out to form a cutout portion while leaving the spring and the fastening member on the spring receiving member, that is, on the handrail drive device main body side. The roller assembly can be removed by releasing the engagement with the fastening member, and the pressure roller assembly can be removed by engaging the notch of the bracket with the fastening member and pushing the roller assembly. By suspending the fastening member from the spring receiving member, it is not necessary to adjust the spring pressure of the spring by suspending the fastening member from the device body side.

〔Example〕

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

In FIGS. 1 to 4, the same reference numerals as those in FIGS. 5 and 6 indicate corresponding parts, and 27 is a drive roller shaft fixed to the handrail drive device main body 15, and two drive roller shafts 27 are provided.
An upright portion 21c, which is located on the central side in the axial direction of the passenger conveyor of the spring receiving member 21, is detachably fixed to the front end portion of the with a bolt 28. The drive roller shaft 27 includes the final stage chain gear 12 of the handrail drive chain gear mechanism 11 and the drive roller 1.
3 and 3 are integrally rotatably supported by bearings 29. Reference numeral 16e designates a notch portion that is open to the tip end of the upper plate 16 of the bracket 16 provided on the pressure roller assembly 20, that is, the side plate 16d and extends in the width direction of the passenger conveyor. The notch 16e is provided with a fastening bolt 23. Movably engaged in the direction. 30 is the head 23 of the fastening bolt 23
a is an L-shaped detent plate fixed by welding,
The lower surface of the upper plate 16c of the bracket 16 is supported by the head 23a of the fastening bolt 23 via the rotation stop plate 30, and the pressure roller assembly 20 is suspended by the spring receiving member 21 via the spring 22. The side plate 16d of the bracket 16 is arranged closer to the center in the width direction of the passenger conveyor than the moving handrail 3. Further, 31 is an endless chain that transmits a driving force to the final stage chain gear 12 of the handrail drive chain gear mechanism 11, and 32 is a tension adjusting chain gear of the endless chain 31, and the chain gear 32 is attached to the chain gear 32 in a pivoted manner. The plate 33 is fixed to the device body 15 side by a bolt 34 so that the position can be adjusted in the vertical direction, and the tension adjusting chain gear 32 is arranged in the central portion of the device body 15 in the longitudinal direction. The structure of this embodiment other than that described above is the same as that of the conventional handrail drive device shown in FIGS. 5 and 6.

The handrail drive handrail device of the embodiment configured as described above,
The side plate 16d bent downward from the upper plate 16c of the bracket 16 of the pressure roller assembly 20 is located closer to the center in the width direction of the passenger compartment than the moving handrail 3, and the fastening bolt 2 of the fastening member 26 is provided.
Since the notch 16e with which 3 engages is opened to the width direction outer side of the passenger conveyor on the side opposite to the side plate 16d of the upper plate 16c, by pulling out the bracket 16 from the width direction center side,
The pressure roller assembly 20 can be removed by disengaging the notch 16e and the fastening bolt 23. In this case, the fastening bolt 23 does not need to be pulled out from the spring receiving member 21 fixed to the apparatus body 15, and the spring 22 and the spring seat 2 are not pulled out.
The roller assembly 20 can be removed while leaving the spring assembly 4 and 24 on the spring receiving member 21. Further, the attachment of the new assembly 20 is performed by cutting the bracket 16 with the cutout portion 16e.
Is fitted to the fastening bolt 23, and the bracket 6 is pushed into the fastening bolt 23 from the center side in the width direction outward so that the upper plate 16c of the bracket 6 is supported on the head 23a of the fastening bolt 23 by the rotation stop plate. By doing so, the new roller assembly 2
0 through the spring 22 by the fastening member 26
It can be mounted in the state of being suspended by 1. 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, a detent wrench that engages with the head portion 23a of the fastening bolt 23 is provided. Although it does not enter, since the head 23a is welded to the detent plate 30 and the detent plate 30 is engaged with the upper plate 16c of the bracket 16, the nut 25 is turned with a spanner to adjust the spring force of the spring 22. The operation can be done easily without any trouble.

〔The invention's effect〕

As described above, according to the present invention, the notch formed in the bracket of the pressure roller assembly is attached to the fastening member movably mounted in the axial direction through the spring on the spring receiving member provided in the handrail drive device main body. Since the parts are engaged and supported so as to be engageable and disengageable, the roller assembly can be attached and detached while the fastening member is left on the spring receiving member together with the spring without pulling out the fastening member from the spring receiving member. It is possible to provide an effect that a handrail drive device for a passenger conveyor can be provided, which enables easy desorption work in a short time.

[Brief description of drawings]

FIG. 1 is an enlarged side view of a portion corresponding to part I in FIG. 5 showing a handrail drive device for a passenger conveyor according to an embodiment of the present invention, and FIGS. 2 and 3 are II-II lines in FIG. And III
-III line sectional view, FIG. 4 is a IV-IV line sectional view of FIG. 3, FIG. 5 is a schematic vertical sectional side view showing a conventional handrail driving device for a passenger conveyor, and FIG. 6 is a handrail shown in FIG. It is a figure corresponding to FIG. 3 of a drive device. 1 ... Truss, 3 ... Moving handrail, 7 ... Driving machine, 13 ...
... drive roller, 14 ... pressure roller, 15 ... handrail driving device main body, 16 ... bracket, 20 ... pressure roller assembly, 16c ... side plate, 16e ... notch portion, 21 ... spring receiving member , 22 …… Spring, 23 …… Fastening bolt, 25…
... nuts, 26 ... fastening members, 30 ... rotation stop plates. 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 return path for moving handrails, which includes a pressure roller urged to the drive roller side by a spring, and a handrail drive device main body that is fixed to a truss of a passenger conveyor and is equipped with the drive roller and suspends the pressure roller. A handrail drive device for a passenger conveyor that drives the moving handrail by sandwiching a portion between a drive roller and a pressure roller, and has a pressure roller assembly in which the pressure roller is pivotally attached to a bracket, and the device main body side is provided. A handrail drive device for a passenger conveyor, characterized in that a notch portion formed in the bracket is removably engaged with and supported by a fastening member mounted on a provided spring receiving member so as to be axially movable via a spring. 2. A pressure roller assembly, wherein a notch portion of a bracket is opened outside a moving handrail in a width direction of a passenger conveyor,
The handrail drive device for a passenger conveyor according to claim 1, wherein the handrail drive device is detachable from the center portion side in the width direction.