JP2008087928A - Moving handrail drive device of passenger conveyor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a moving handrail drive device for circulatingly moving a moving handrail by always holding it with an arbitrarily specified holding force by a drive roller and a pressure roller in a passenger conveyor. <P>SOLUTION: This moving handrail drive device of the passenger conveyor comprises the drive roller 4 brought into contact with the inner side of the moving handrail 2 on the return path side and rotatingly driven, the pressure roller 5 brought into contact with the outer side of the moving handrail on the return path side, a lever 14 pivotally supported on a truss at the center and supporting the pressure roller 5 at one side, and a load generating part 18 supported on the other side of the lever 14 and generating a specified load by pulling down the lever 14 to rotate the pressure roller 5 in the push-up direction through the lever 14 for pressing it against the moving handrail 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a moving handrail drive device for passenger conveyors such as escalators.

In a conventional handrail drive device for a passenger conveyor, the moving handrail is clamped by a driving roller that is rotationally driven and a pressure roller that is biased by a leaf spring, and the moving handrail is pulled in or pushed out by the frictional force generated by this clamping force. The moving handrail is circulated. (For example, refer to Patent Document 1).

JP 2005-280957 A

  In the conventional moving handrail driving device for passenger conveyors, a plate spring having a large spring constant is used as a method of biasing the moving handrail toward the driving roller by the pressure roller. There is a problem that the holding force of the moving handrail greatly fluctuates due to a slight change in the bending of the leaf spring due to the positional accuracy between the roller and the pressure roller and the variation in the spring characteristics of the leaf spring. In particular, when the holding force of the moving handrail is reduced, the driving force of the moving handrail is also reduced, so that there is a problem that the moving handrail stops when there are many passengers on the passenger conveyor. Further, since the upper pressure roller and the lower pressure roller are attached to separate leaf springs, a difference in the holding force of the moving handrail tends to occur between the upper side and the lower side. There is also a problem that it is difficult to understand the actual holding force of the moving handrail.

  The present invention has been made to solve the above-described problems. The object of the present invention is to always hold a moving handrail with a fixed holding force by a driving roller and a pressure roller in a passenger conveyor. Another object of the present invention is to provide a moving handrail driving device that circulates.

  A moving handrail driving device for a passenger conveyor according to the present invention is disposed in contact with the inside of a return-side moving handrail, and is disposed in contact with a driving roller that is rotationally driven and the outside of the return-side moving handrail. A pressure roller, a lever pivotally supported by the truss at the center, and supporting the pressure roller at one side; supported by the other side of the lever; pulling down the lever; A load generating unit that rotates the pressure roller in a pushing-up direction and generates a constant load that is pressed against the moving handrail;

  The present invention includes a drive roller that is disposed in contact with the inside of the return-side moving handrail, is driven to rotate, a pressure roller that is disposed in contact with the outside of the return-side moving handrail, and a truss at the center. And a lever that supports the pressure roller on one side, and is supported on the other side of the lever, pulls down the lever, rotates the pressure roller through the lever, and rotates the lever. By having a configuration including a load generating unit that generates a constant load to be pressed against the moving handrail, the moving handrail is always clamped and circulated by the driving roller and the pressure roller with an arbitrary fixed clamping force. be able to.

  In order to explain the present invention in more detail, it will be described with reference to the accompanying drawings. In addition, in each figure, the same code | symbol is attached | subjected to the part which is the same or it corresponds, The duplication description is simplified or abbreviate | omitted suitably.

Embodiment 1 FIG.
1 is a side view showing a moving handrail drive device for a passenger conveyor according to Embodiment 1 of the present invention, FIG. 2 is a plan view seen from the direction A in FIG. 1, and FIG. 3 is a cross-sectional view taken along line BB in FIG. 4 is a cross-sectional view taken along the line CC of FIG. 1, FIG. 5 is a plan view showing the assembled state of the lever and the pressure roller, FIG. 6 is a side view showing the assembled state of the lever and the pressure roller, and FIG. FIG. 8 is a side view showing the details of the attachment portion of the pressure roller to the lever, FIG. 9 is a plan view showing the details of the lever, and FIG. 10 is the details of the lever. FIG.

  In the figure, reference numeral 1 denotes a passenger conveyor truss straddling between upper and lower floor beams, and railings (not shown) are erected on both sides thereof. Reference numeral 2 denotes an endless moving handrail guided by the balustrade. A plurality of endless steps (not shown) are arranged in the longitudinal direction of the truss 1, for example, in the upper machine room of the truss 1 (not shown in FIGS. 1 to 10). The endless step chain (not shown) wound around a step sprocket (not shown) driven by a drive motor (not shown) housed in the cylinder is locked in tandem and circulated.

  The moving handrail drive device for a passenger conveyor according to the present invention is installed on an inclined portion of the truss 1 via a fixed plate 3, and the moving handrail 2 is always held with an arbitrary constant clamping force by the driving roller 4 and the pressure roller 5. It is pinched and circulated. In other words, the moving handrail driving device moves to the return side at a position facing the driving roller 4 across the moving handrail 2 and a plurality of driving rollers 4 arranged in a row in contact with the inside of the return side moving handrail 2. A plurality of pressure rollers 5 arranged in a column in contact with the outside of the handrail 2 are provided.

  The plurality of driving rollers 4 include, for example, a first moving handrail sprocket (not shown) attached to the rotating shaft of the step sprocket, and a first moving handrail chain 6 having one side wound around the first moving handrail sprocket. The second moving handrail sprocket 7 wound around the other side of the first moving handrail chain 6, the third moving handrail sprocket 8 attached to the rotation shaft of the second moving handrail sprocket 7, It is rotationally driven by a drive motor through a second moving handrail chain 9 wound around the moving handrail sprocket 8.

  On the other hand, the plurality of pressure rollers 5 are pivotally supported by first pins 11 extending in the horizontal direction at both ends of a pair of pressure roller holding members 10 arranged with the longitudinal direction parallel to the longitudinal direction of the moving handrail 2. The center portion of the pair of pressure roller holding members 10 is pivotally supported at both ends of a pressure roller mounting member 13 having a substantially U-shaped longitudinal section by a second pin 12 extending in the horizontal direction.

  The pressure roller mounting member 13 is housed in a concave portion provided on one side of the lever 14 arranged with its longitudinal direction parallel to the longitudinal direction of the moving handrail 2, with most of the two piece connecting portions being disposed, It is pivotally supported by a third pin 15 that extends in the horizontal direction, and is controlled so that the pressure roller 5 does not come off the moving handrail 2.

  The lever 14 is pivotally supported on the inclined portion of the truss 1 via the fixed plate 3 by a fourth pin 16 extending in the horizontal direction near one side portion of the center portion, and a weight guide 17 is provided on the other side portion. Thus, the load generating portion 18 that is prevented from shaking in the horizontal direction is pivotally supported by a fifth pin 19 extending in the horizontal direction.

  In the configuration of the load generating unit 18, a first connector 18a is pivotally supported by a fifth pin 19 on the other side of the lever 14, and a screw rod 18b extending in the vertical direction is fixed to the lower end thereof. ing. At the lower end of the screw rod 18b, the bottom portion of the weight case 18d on the transverse cross-section C-shaped to which the guide material 18c is fixed to the upper and lower outer surfaces is fixed. In the weight case 18d, a plurality of kinds of weights 18e having different weights are detachably stacked through the center of the threaded rod 18b, and the first presser plate 18f is interposed from above the uppermost weight 18e. The first nut 18g screwed into the screw rod 18b is held without rattling.

  Further, in the configuration of the weight guide 17, a guide mounting member 17a extending in the vertical direction is fixed to the fixing plate 3, and in the horizontal direction near the lower end thereof and the height of the first connector 18a of the load generating unit 18. One end of a pair of guide arms 17b extending in the direction is fixed. In the vicinity of both ends of the pair of guide arms 17b, a pair of guide bars 17c extending in the vertical direction are fixed across the pair, and the guide material 18c of the load generating unit 18 is guided to the pair of guide bars 17c.

  The load generating unit 18 generates a load in a direction in which the other side of the lever 14 is pulled down by its own weight, and by this load, one of the levers 14 passes through the pressure roller mounting member 13 and the pressure roller holding member 10. The pressure roller 5 that is pivotally supported on the side portion rotates in the upward direction and is pressed against the moving handrail 2 side.

  The centers of the third pin 15, the fourth pin 16, and the fifth pin 19 are arranged on a straight line parallel to the moving handrail 2, and the distance between the fourth pin 16 and the fifth pin 19, That is, the distance L1 between the rotating shaft of the lever 14 and the other side portion that supports the load generating portion 18 is the distance between the fourth pin 16 and the third pin 15, that is, the rotating shaft of the lever 14 and the additional axis. It is set longer than the distance L2 between the one side supported by the pressure roller 5. Further, as shown in FIG. 1, when the angle of the inclined portion of the passenger conveyor is D and the weight of the load generating unit 18 is W, the load with which the plurality of pressure rollers 5 are pressed against the moving handrail 2 is P = W -(L1 / L2) cosD. The pressure roller mounting member 13 and the pressure roller holding member 10 are pivotally supported on the basis of a constant load larger than the weight of the load generating portion 18 obtained by increasing the lever ratio (L1 / L2). An equal load is distributed to each pressure roller 5.

  The pressure roller 5 holds the moving handrail 2 together with the driving roller 4 by the load that is evenly distributed, and the moving handrail is driven by the driving force of the driving roller 4 driven by the driving motor by the frictional force generated by the holding. 2 is circulated.

  According to the first embodiment described above, the moving handrail 2 is a load that is evenly distributed based on a constant load larger than the weight of the load generating unit 18, and is driven by each pressure roller 5. Since it is pressed to the 4th side, even if it uses the lightweight small weight 18e, it can circulate stably. Moreover, the value of the load can be accurately calculated from the inclined portion of the passenger conveyor, the weight of the load generating portion 18 and the lever 14 ratio. In addition, since a plurality of types of weights 18e having different weights are detachably stacked on the load generation unit 18, the adjustment of the holding force of the moving handrail 2 by the driving roller 4 and the pressure roller 5 is adjusted by the number of weights 18e. Can be easily performed by increasing or decreasing the weight, changing the type of the weight 18e, or the like. Furthermore, since it has a mechanical configuration that does not depend on the spring characteristics of the elastic body, there is little fluctuation in clamping force with time, and the reliability is high.

Embodiment 2. FIG.
FIG. 11: is a side view which shows the moving handrail drive device of the passenger conveyor in Embodiment 2 of this invention.

  In the load generating portion 18 of the second embodiment, the lower end of the screw rod 18b is fixed to a spring receiver 18h disposed below the bottom portion of the weight case 18d. Between the bottom of the weight case 18d and the spring receiver 18h, a compression spring 18i that passes through the center of the screw rod 18b is compressed by the weight of the weight 18e. A threaded tube 18j extending through the center of the weight case 18d and extending to the top of the weight case 18d is fixed to the bottom of the weight case 18d. The plurality of types of weights 18e stacked in the weight case 18d are held without rattling by the second nut 18l screwed into the screw pipe 18j from above the uppermost weight 18e via the second presser plate 18k. The screw rod 18b, the spring receiver 18h, and the compression spring 18i are slidably supported in the vertical direction.

  According to the second embodiment described above, in addition to the effects of the first embodiment, the swinging of the pressure roller 5 and the swinging of the weight 18e due to the dimensional variation of the moving handrail 2 and the like are suppressed, and the smooth movement is achieved. The handrail 2 can be driven.

Embodiment 3 FIG.
FIG. 12 is a side view showing a moving handrail drive device for a passenger conveyor according to Embodiment 3 of the present invention.

  In the load generating portion 18 of the third embodiment, the screw rod 18b fixed to the lower end of the first connector 18a includes a receiving plate 18m fixed to the truss 1 via the fixing plate 3, and a receiving plate 18m. It is disposed through a spring receiver 18h disposed obliquely below. The spring receiver 18h is restrained from moving downward by a third nut 18n and a lock nut 18o screwed from the lower end of the screw rod 18b. A compression spring 18i penetrating through the center of the screw rod 18b is disposed between the receiving plate 18m and the spring receiver 18h, and a load in a direction of pulling down the lever 14 via the spring receiver 18h and the screw rod 18b. Is generated. Further, the compression amount of the compression spring 18i can be adjusted by changing the screwing amounts of the third nut 18n and the lock nut 18o.

  According to the third embodiment described above, the movable handrail 2 can be smoothly driven by absorbing the swing of the pressure roller 5 due to the dimensional variation of the movable handrail 2 by the compression spring 18i. Further, the value of the holding force of the moving handrail 2 by the driving roller 4 and the pressure roller 5 can be calculated with higher accuracy than the compression amount of the compression spring 18i. Further, the holding force of the moving handrail 2 by the driving roller 4 and the pressure roller 5 can be easily adjusted only by adjusting the compression amount of the compression spring 18i. Further, it can be realized with a simpler configuration than the first and second embodiments, and the moving handrail drive device can be downsized. Unlike the first embodiment, the holding force of the moving handrail 2 by the driving roller 4 and the pressure roller 5 depends on the spring characteristics of the compression spring 18i. Since it is arranged in a sufficient installation space at a distant position, a compression spring 18i having desired spring characteristics can be employed.

Embodiment 4 FIG.
FIG. 13: is a side view which shows the moving handrail drive device of the passenger conveyor in Embodiment 4 of this invention.

  In the fourth embodiment, one end of the wire rope 20 is supported on the lower end of the second connector 18p that is pivotally supported on the other side of the lever 14. The wire rope 20 is pivotally supported by a first sheave 21 a that is pivotally supported by the fixed plate 3, a second sheave 21 b that is pivotally supported near the boundary between the inclined portion of the truss 1 and the upper horizontal portion, and the upper machine chamber 22. A load generating portion 18 composed of a weight 18e or the like similar to that of the first embodiment is supported on the other end of the third sheave 21c.

  According to the fourth embodiment described above, in addition to the effects of the first embodiment, the load generating unit 18 can be disposed at any place where maintenance and inspection can be performed, and the driving roller 4 and the pressure roller The holding force of the moving handrail 2 by 5 can be easily adjusted. This is also effective when there is no space for placing the load generating portion 18 in the inclined portion of the truss 1. FIG. 13 shows the case where the load generating unit 18 is arranged in the upper machine room 22, but there is no particular limitation on the arrangement location, and the wire rope 20 is routed from the other side of the lever 14 to an arbitrary position. This is possible.

Embodiment 5. FIG.
FIG. 14 is a side view showing a load generating portion of a moving handrail drive device for a passenger conveyor according to Embodiment 5 of the present invention.

  In the fifth embodiment, the load generation unit 18 arranged in the upper machine chamber 22 in the fourth embodiment is configured by the same compression spring 18i as that in the third embodiment.

  According to the fifth embodiment described above, the effects of the third embodiment and the fifth embodiment are obtained. In all of the above-described embodiments, the escalator has been described as a premise, but it goes without saying that it can be applied to a walking sidewalk.

It is a side view which shows the moving handrail drive device of the passenger conveyor in Embodiment 1 of this invention. It is the top view seen from the A direction of FIG. It is sectional drawing in the BB line of FIG. It is sectional drawing in the CC line of FIG. It is a top view which shows the assembly state of a lever and a pressure roller. It is a side view which shows the assembly state of a lever and a pressure roller. It is a top view which shows the attachment part detail to the lever of a pressure roller. It is a side view which shows the attachment part detail to the lever of a pressure roller. It is a top view which shows the detail of a lever. It is a side view which shows the detail of a lever. It is a side view which shows the moving handrail drive device of the passenger conveyor in Embodiment 2 of this invention. It is a side view which shows the moving handrail drive device of the passenger conveyor in Embodiment 3 of this invention. It is a side view which shows the moving handrail drive device of the passenger conveyor in Embodiment 4 of this invention. It is a side view which shows the load generation part of the moving handrail drive device of the passenger conveyor in Embodiment 5 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Truss 2 Moving handrail 3 Fixed plate 4 Driving roller 5 Pressure roller 6 1st moving handrail chain 7 2nd moving handrail sprocket 8 3rd moving handrail sprocket 9 2nd moving handrail chain 10 Pressure roller holding member 11 First pin 12 Second pin 13 Pressure roller mounting member 14 Lever 15 Third pin 16 Fourth pin 17 Weight guide 17a Guide mounting member 17b Guide arm 17c Guide rod 18 Load generating portion 18a First coupling tool 18b Screw rod 18c Guide material 18d Weight case 18e Weight 18f First presser plate 18g First nut 18h Spring receiver 18i Compression spring 18j Screw tube 18k Second presser plate 18l Second nut 18m Receiver plate 18n Third nut 18o lock nut 18p second connector 19 fifth pin 20 wire rope 21a first Sheave 21b second sheave 21c third sheave 22 top machine room

Claims (9)

A driving roller disposed in contact with the inside of the return-side moving handrail and driven to rotate;
A pressure roller arranged in contact with the outside of the return-side moving handrail;
A lever that is pivotally supported by the truss at the center and supports the pressure roller on one side;
A load generating unit that is supported on the other side of the lever, pulls down the lever, rotates the pressure roller in the direction of pushing up the lever, and generates a constant load that presses against the moving handrail;
A moving handrail drive device for a passenger conveyor.   2. The moving handrail drive device for a passenger conveyor according to claim 1, wherein the load generating portion is constituted by a weight that pulls down the other side portion of the lever by its own weight.   The moving handrail drive device for a passenger conveyor according to claim 2, wherein the weight is composed of a plurality of pieces and is detachably supported on the other side of the lever. The weight is
A rod supported on the other side of the lever;
A spring receiver disposed below the weight and fixed to the rod;
A compression spring arranged to be compressed by the weight of the weight between the weight and the spring receiver;
The movable handrail drive device for a passenger conveyor according to claim 2 or 3, wherein the movable handrail drive device is supported so as to be slidable in a vertical direction via the door. The load generator is
A rod supported on the other side of the lever;
A receiving plate that penetrates the rod and is fixed to the truss;
A spring receiver disposed below the backing plate and fixed to the rod;
A compression spring that is compressed and disposed between the backing plate and the spring receiver and generates a load that pulls down the lever via the spring receiver and the rod;
The moving handrail drive device for a passenger conveyor according to claim 1.   The moving handrail drive device for a passenger conveyor according to claim 5, wherein the compression amount of the compression spring is adjustable.   The load generating portion is arranged at an arbitrary position and is supported on the other side of the lever via a wire rope wound around a sheave that is pivotally supported at a predetermined location of the truss. The moving handrail drive device of the passenger conveyor in any one of Claim 6.   The distance between the rotating shaft of the lever and the other side supporting the load generating portion is set longer than the distance between the rotating shaft of the lever and one side supported by the pressure roller. The moving handrail drive device for a passenger conveyor according to any one of claims 1 to 7. The pressure roller is pivotally supported at both ends of the pair of pressure roller holding members,
The pair of pressure roller holding members are pivotally supported at both ends of the pressure roller mounting member at the center thereof,
The moving handrail drive device for a passenger conveyor according to any one of claims 1 to 8, wherein the pressure roller pressure mounting member is pivotally supported on one side of a lever at a central portion thereof.

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