CN107686042B - Passenger conveying equipment - Google Patents
Passenger conveying equipment Download PDFInfo
- Publication number
- CN107686042B CN107686042B CN201710474601.XA CN201710474601A CN107686042B CN 107686042 B CN107686042 B CN 107686042B CN 201710474601 A CN201710474601 A CN 201710474601A CN 107686042 B CN107686042 B CN 107686042B
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- CN
- China
- Prior art keywords
- roller
- link plates
- outer peripheral
- tooth groove
- peripheral portion
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B23/00—Component parts of escalators or moving walkways
- B66B23/02—Driving gear
- B66B23/024—Chains therefor
Abstract
The invention provides a passenger conveying device for preventing uneven abrasion of rollers of a step chain. The step chain (13) comprises: a plurality of outer link plates (14) arranged in pairs; a plurality of inner link plates (15) arranged in pairs inside the outer link plates (14); pins (16) that are located at both longitudinal end portions of each of the outer link plates (14) and the inner link plates (15) and that connect the outer link plates and the inner link plates to each other; and a roller (17) which is arranged between the pair of inner link plates (15) and is rotatably supported by the pin (16), wherein the width dimension of the roller (17) is set to be larger than the width dimension of the tooth groove (19) of the step sprocket (11) engaged with the outer peripheral part (17a) of the roller (17), and the outer peripheral part (17a) of the roller (17) is provided with an arc part (20) which extends from both side ends thereof in the central direction and prevents the corner parts (19a, 19b) of the tooth groove (19) of the step sprocket (11) from abutting against the outer peripheral part (17 a).
Description
Technical Field
The present invention relates to a passenger conveyor, and more particularly, to a step chain structure for driving steps of a passenger conveyor.
Background
The passenger conveying device comprises: a plurality of steps connected in an annular shape and circularly moving between the landing ports; a handrail moving in synchronization with the steps; a main body frame arranged between the riding and landing ports; step sprockets respectively disposed at both longitudinal ends of the main body frame; and a step chain spanning between the step sprockets.
In contrast, japanese patent application laid-open No. 2008-120513 (patent document 1) describes a design that satisfies both requirements of space saving and high load resistance of a step chain. This document discloses: a step chain connecting a plurality of steps is composed of a plurality of link plates which are arranged in a manner of forming a left-right pair at intervals and are rotatablely connected through pins, and a plurality of metal rollers or hard plastic rollers which are rotatablely arranged between the left-right pair of link plates by taking the pins as axes and support the load of the steps.
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 2008-120513
Disclosure of Invention
Technical problem to be solved by the invention
However, in the passenger conveyor, when high load resistance is required, the rollers engaging with the step sprockets and supporting the load of the steps are made of metal, while when space saving and quietness of the installation space are required, the rollers are made of plastic or rubber.
In general, the width of the groove portion of the step sprocket engaging with the outer peripheral portion of the roller is smaller than the width of the roller, and is about half of the roller width. This is basically to suppress the width dimension of the step sprocket as a heavy object, and to achieve weight reduction, cost reduction and improvement in workability.
However, since the outer peripheral portion of the roller is generally flat except for the chamfered corner portion, and the width dimension of the roller is larger than the width dimension of the tooth groove of the step sprocket, the corner portion of the tooth groove abuts against the outer peripheral portion of the roller, and the outer peripheral portion of the roller is unevenly worn over time to generate a step, which is particularly remarkable in a passenger conveyor in which the roller is made of plastic or rubber. Further, the cushion member provided at the bottom of the tooth bottom described in the above patent document is made of metal for the purpose of reducing noise when the step sprocket meshes with the roller. Therefore, the cushion member is elastically deformed by contact with the roller, and the tooth space corner of the step sprocket cannot be prevented from coming into contact with the sliding surface of the roller. Further, if any buffer member is provided on the step sprocket side, the structure of the step sprocket becomes complicated, resulting in an increase in cost.
Accordingly, an object of the present invention is to provide a passenger conveyor capable of preventing uneven wear of rollers of a step chain.
Means for solving the problems
In order to solve at least one of the above problems, one mode of the present invention is a passenger conveyor including: a plurality of steps connected in an annular shape and circularly moving between the landing ports; a main body frame arranged between the riding and landing ports; step sprockets respectively disposed at both longitudinal ends of the main body frame; and a step chain mounted between the step sprockets, the step chain having: a plurality of outer link plates arranged in pairs; a plurality of inner link plates disposed in pairs on inner sides of the outer link plates; pins located at both longitudinal end portions of each of the outer link plates and the inner link plates and connecting them to each other; and a roller disposed between the pair of inner link plates and rotatably supported by the pin, wherein a width dimension of the roller is set to be larger than a width dimension of a tooth groove of the step sprocket engaged with an outer peripheral portion of the roller, and wherein an R portion (arc portion) extending from both side ends of the roller in a central direction and preventing a corner portion of the tooth groove of the step sprocket from coming into contact with the outer peripheral portion is provided on the outer peripheral portion of the roller.
Effects of the invention
According to one aspect of the present invention, uneven wear of the rollers of the step chain can be prevented. Other problems, structures, and effects will be apparent from the following embodiments.
Drawings
Fig. 1 is a schematic configuration diagram of a passenger conveyor according to the present embodiment.
Fig. 2 is a plan view showing a connecting portion between a step chain and a step of the passenger conveyor of the present embodiment.
Fig. 3 is a side view showing the engagement portion between the step sprocket and the step chain of the passenger conveyor of the present embodiment.
Fig. 4 is an enlarged front view showing an engagement portion of a step sprocket and a step chain of one embodiment of the passenger conveyor of the present embodiment.
Detailed Description
The following describes embodiments of the present invention based on the drawings.
Example 1
Fig. 1 is a schematic configuration diagram of a passenger conveyor according to the present embodiment.
An escalator as an example of a passenger conveyor includes: a plurality of steps 1 circularly connected and moved in a ring shape from a lower landing entrance 1F as one landing entrance connected to a lower floor to a landing entrance 2F as the other landing entrance connected to an upper floor; a handrail 2 that moves in synchronization with the steps 1; a main body frame 3 which is arranged obliquely from one landing port to the other landing port; a drive device 7 disposed in the machine chamber 4 provided at the upper end of the main body frame 3 and having a motor 5 and a reduction gear 6; a reducer side sprocket 8 fixed to an output shaft of the reducer 6; a drive sprocket not shown that is driven by the reducer side sprocket 8 via a drive chain 9; a first step sprocket 11 disposed in the machine room 4 and provided coaxially with the drive sprocket; a second step sprocket 12 disposed at the lower-stage-side end of the main body frame 3; and a step chain 13 that connects the plurality of steps 1 and is bridged between the first and second step sprockets 11 and 12. In fig. 1, the machine chamber 4 and the driving device 7 are provided on the upper side, but the present invention is not limited thereto, and the machine chamber 4 and the driving device 7 may be provided on the lower side or in the middle. When the machine room 4 and the drive device 7 are provided on the lower layer side, the drive sprocket and the first step sprocket 11 are disposed on the lower layer side, and the second step sprocket 12 is disposed on the upper layer side. The reduction gear 6 of the drive device 7 includes a service brake, not shown.
Fig. 2 is a plan view showing a coupling portion between a step chain and a step of the passenger conveyor of the present embodiment.
The step chain 13 connecting the steps 1 has: a plurality of outer link plates 14 arranged in pairs; a plurality of inner link plates 15 disposed in pairs inside the outer link plates 14; pins 16 located at both longitudinal end portions of each of the outer link plates 14 and the inner link plates 15 to connect them to each other; and rollers 17 rotatably supported by the pins 16 between the pair of inner link plates 15.
The front end of a part of the plurality of pins 16 connecting the plurality of outer link plates 14 and the plurality of inner link plates 15 is extended to the step 1 side and is integrated with a front wheel shaft 18 attached to the step 1.
Fig. 3 is a side view showing the engagement portion between the step sprocket and the step chain of the passenger conveyor of the present embodiment.
A step chain 13 that links the steps 1 is wound around the first step sprocket 11, rotation of the first step sprocket 11 is transmitted as a driving force to the step chain 13, and the step chain 13 rotates in the main body frame 3, thereby driving the plurality of steps 1 in a circulating manner. As shown in fig. 3, at the peripheral edge of the first step sprocket 11, tooth grooves 19 that engage with the outer peripheral portions of the rollers 17 assembled to the step chain 13 are formed at intervals corresponding to the link pitch, which is the interval of the rollers 17 in the step chain 13, in the circumferential direction. Fig. 3 shows the meshing portion of the step chain 13 and the first step sprocket 11, and the meshing portion of the step chain 13 and the second step sprocket 12 is also configured similarly.
Fig. 4 is an enlarged front view showing an engagement portion of a step sprocket and a step chain of one embodiment of the passenger conveyor of the present invention.
Specifically, as shown in fig. 4, an outer peripheral portion 17a of the roller 17 is provided with R portions (arc portions) 20 extending from both side ends thereof across the center to avoid contact between the outer peripheral portion 17a and corner portions 19a, 19b of the tooth groove 19 of the first step sprocket 11, and a width dimension L1 of the roller 17 of the present embodiment is set larger than a width dimension L2 of the tooth groove 19 of the first step sprocket 11 engaged with the outer peripheral portion 17a of the roller 17.
The R part 20 is set to 2600N/m when the escalator is fully loaded2～3600N/m2The positions of the R portion 20 facing the corner portions 19a and 19b of the slot 19 are maintained at the values of the curved surfaces during the load, and thus even if the roller 17 is deflected by the application of the load, the corner portions 19a and 19b can be prevented from coming into contact with the outer peripheral portion 17 a. Further, the elastic modulus of the roller 17 was set to 2600N/m2～3600N/m2The positions of the R portion 20 facing the corner portions 19a and 19b of the slot 19 are maintained at the values of the curved surfaces during the load, and even if the roller 17 is deflected by applying a load, the corner portions 19a and 19b can be prevented from coming into contact with the outer peripheral portion 17 a.
Further, the R portion 20 of the present embodiment is formed in a shape in which the R portion 20 is continuously formed from one side end to the other side end of the roller 17, but the present invention is not limited to this, and the R portion may be formed at a predetermined distance from both side ends of the roller 17 toward the center, and a flat portion may be provided between these R portions, so that the flat portion can receive a load, and the corner portions 19a, 19b of the tooth groove 19 can be prevented from coming into contact with the outer peripheral portion 17a of the roller 17.
In the present embodiment, the step chain 13 is engaged with the first step sprocket 11 by the rollers 17 engaging with the tooth grooves 19 formed in the peripheral edge portion of the first step sprocket 11, and the rotation of the first step sprocket 11 is transmitted to the step chain 13 as a driving force. At this time, the front end portion 11a of the first step sprocket 11 is positioned in the interval between the adjacent rollers 17, and the center of the outer peripheral portion 17a of the roller 17 abuts against the bottom portion 19c of the tooth groove 19, receiving the load. On the other hand, the R portion 20 provided on the outer peripheral portion 17a of the roller 17 prevents the side surface of the outer peripheral portion 17a from coming into contact with the corner portions 19a and 19b of the slot 19.
In the present embodiment, the R portion 20 extending from both side ends through the center of the outer peripheral portion 17a of the roller 17 and preventing the corner portions 19a and 19b of the tooth groove 19 of the first step sprocket 11 from coming into contact with the outer peripheral portion 17a is provided in the outer peripheral portion 17a of the roller 17, so that the corner portions 19a and 19b of the tooth groove 19 can be prevented from coming into contact with the outer peripheral portion 17a of the roller 17 and the outer peripheral portion 17a can be prevented from being unevenly worn, and high durability of the roller 17 can be achieved.
In addition, the R portion 20 formed on the roller 17 is set to a size of 2600N/m2～3600N/m2The position of the R portion 20 facing the corner portions 19a, 19b of the slot 19 is maintained at a curved surface value during the load, or the elastic modulus of the roller 17 is set to 2600N/m2～3600N/m2The positions of the R portion 20 facing the corner portions 19a and 19b of the slot 19 are maintained at the values of the curved surfaces during the load, and thus even if the roller 17 is deflected by applying a load, the corner portions 19a and 19b can be prevented from coming into contact with the outer peripheral portion 17 a.
Further, R portions are formed at a predetermined distance from both side ends of the roller 17 toward the center, and a flat portion is provided between the R portions, whereby the roller 17 suitable for high load can be formed.
Further, in the case where uneven wear occurs in the roller 17 provided with the R portion 20 and it is confirmed that the corner portions 19a and 19b of the tooth groove 19 abut on the outer peripheral portion 17a thereof, it indicates that an abnormal load has occurred, and the cause of the abnormal load can be ascertained and solved before a failure such as abnormal stop or an accident occurs.
The present invention is not limited to the above-described embodiments, but includes various modifications. For example, the above-described embodiments are described in detail for the purpose of easily and easily explaining the present invention, and are not limited to the embodiments having all the configurations described.
Description of the reference numerals
1 … … stair
2 … … Handrail
3 … … main body frame
11 … … first chain wheel
12 … … second chain wheel
13 … … step chain
14 … … outer chain plate
15 … … inner chain plate
16 … … pin
17 … … roller
17a … … outer peripheral portion
18 … … front axle
19 … … tooth slot
19a, 19b … … corner
19c … … bottom
And 20 … … R.
Claims (3)
1. A passenger conveyor, comprising:
a plurality of steps connected in an annular manner and circularly moving between the landing ports;
a main body frame arranged across the ascending and descending port;
step sprockets respectively disposed at both longitudinal ends of the main body frame; and
a step chain erected between the step chain wheels,
the step chain has: a plurality of outer link plates arranged in pairs; a plurality of inner link plates disposed in pairs on inner sides of the outer link plates; pins located at both longitudinal end portions of each of the outer link plates and the inner link plates and connecting the outer link plates and the inner link plates to each other; and a roller rotatably supported by the pin and disposed between the pair of inner link plates, and a width dimension of the roller is set to be larger than a width dimension of a tooth groove of the step sprocket engaged with an outer peripheral portion of the roller,
an arc portion extending from both side ends of the roller in a central direction and preventing a corner portion of the tooth groove of the step sprocket from coming into contact with the outer peripheral portion is provided on the outer peripheral portion of the roller,
a flat portion is provided between the arc portions of the outer peripheral portion and at a position inside a corner of the tooth groove.
2. The passenger conveyor of claim 1, wherein:
the roller is made of plastic or rubber, and the size of the arc part is set to be 2600N/m2～3600N/m2The position of the arc portion facing the corner of the tooth groove is maintained at a curved surface value under the load of (1).
3. The passenger conveyor of claim 1, wherein:
the roller is formed of plastic or rubber, and the elastic modulus of the roller is set to 2600N/m2～3600N/m2The position of the arc portion facing the corner of the tooth groove is maintained at a curved surface value under the load of (1).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-152422 | 2016-08-03 | ||
| JP2016152422A JP6581549B2 (en) | 2016-08-03 | 2016-08-03 | Passenger conveyor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107686042A CN107686042A (en) | 2018-02-13 |
| CN107686042B true CN107686042B (en) | 2020-07-17 |
Family
ID=61152690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710474601.XA Active CN107686042B (en) | 2016-08-03 | 2017-06-21 | Passenger conveying equipment |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6581549B2 (en) |
| CN (1) | CN107686042B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102578496B1 (en) * | 2019-04-12 | 2023-09-15 | 미쓰비시덴키 가부시키가이샤 | Passenger conveyor and guide shoe of passenger conveyor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4334064C3 (en) * | 1993-10-06 | 1999-07-15 | O & K Rolltreppen Gmbh | Drive system for escalators and moving walks |
| CN1242190C (en) * | 2002-02-10 | 2006-02-15 | 刘亚军 | Roller |
| CN203006688U (en) * | 2012-12-19 | 2013-06-19 | 杭州自强链传动有限公司 | Green environment friendly stairstep chain |
| JP2015129035A (en) * | 2014-01-07 | 2015-07-16 | 東芝エレベータ株式会社 | Passenger conveyor |
-
2016
- 2016-08-03 JP JP2016152422A patent/JP6581549B2/en active Active
-
2017
- 2017-06-21 CN CN201710474601.XA patent/CN107686042B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP2018020878A (en) | 2018-02-08 |
| JP6581549B2 (en) | 2019-09-25 |
| CN107686042A (en) | 2018-02-13 |
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