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Chain looseness detection device of passenger conveyor

A technology of passenger conveyors, detection devices, applied in the direction of transportation and packaging, escalators, etc.

Inactive Publication Date: 2016-10-05
TOSHIBA ELEVATOR KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there may be differences in the judgment of whether slack occurs in the chain due to different operators

Method used

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  • Chain looseness detection device of passenger conveyor
  • Chain looseness detection device of passenger conveyor
  • Chain looseness detection device of passenger conveyor

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0014] In the present embodiment, an escalator 100 will be described as an example of a passenger conveyor that operates by rotating (circulating) a plurality of steps connected in a loop. A chain slack detection device for an escalator according to an embodiment (hereinafter, simply referred to as a chain slack detection device) 1 is as follows: figure 1 The arrangement shown is for an escalator 100 . The escalator 100 is installed in a building (also referred to as a building), and conveys passengers and the like across one floor (hereinafter, referred to as a lower floor) of the building and another floor above the lower floor (hereinafter, referred to as an upper floor).

[0015] The escalator 100 mainly includes a truss (structural frame) 110 , a plurality of steps 120 , and a railing 130 . Inside the truss 110, a frame (illustration omitted) and a driving mechanism of the escalator 100 are disposed.

[0016] The driving mechanism of the escalator 100 mainly includes a ...

no. 2 approach

[0057] In the above-mentioned embodiment, the structure in which the drive chain 112 is pushed up by the coil spring 3 was described, but the structure in which the drive chain 112 is pushed down by the coil spring 3 is also possible. In addition, the description of the same structure as the said embodiment is abbreviate|omitted.

[0058] The spring main body 31 of the coil spring 3 is constituted by a tension coil spring. The spring main body 31 is biased in a direction to push down the driving chain 112 (vertically downward). Then, when slack occurs in the driving chain 112, the spring main body 31 contracts in the vertical direction, and the mounting member 31b of the spring main body 31 moves downward in the vertical direction.

[0059] The roller 35 is fixed to one end (tip end) of the shaft portion 33 . In a state where the chain slack detection device 1 is installed on the escalator 100 , the roller 35 is arranged so as to contact the drive chain 112 from above in the...

no. 3 approach

[0064] In the above-mentioned embodiment, it has been described that the limit switch 6 is "connected" when the head 61a of the operating lever 61 moves to the upper side, but it may be that the head 61a of the operating lever 61 moves to the upper or lower side. When either side, it becomes "access".

[0065] In this case, the limit switch 6 becomes "OFF" when the operation lever 61 is in a horizontal state. Furthermore, the limit switch 6 becomes "ON" when the head part 61a of the operation lever 61 moves to either an upper side or a lower side.

[0066] By configuring the limit switch 6 in this way, for example, the limit switch 6 having the same configuration can also be used in any of the chain slack detection devices 1 of the above-mentioned embodiments. Accordingly, the number of parts required for the slack chain detection device 1 can be reduced.

[0067] As described above, according to the chain slack detection device 1 according to at least one embodiment describ...

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Abstract

The invention relates to a chain slack detection device for passenger conveyors. Chain slack can be detected correctly. The coil spring (3) of the chain slack detection device (1) according to the embodiment has a roller (35) abutting against a drive chain (112) and a spring body (31) biasing it, and is held by the spring body (31). ) The roller (35) applying force abuts against the drive chain (112) to apply tension to the drive chain (112). The limit switch (6) has an operation part (61) that is movable by expansion and contraction of a spring main body (31), and operates by this movement. The control unit (8) outputs the state of the limit switch (6) being switched off.

Description

[0001] This application is based on Japanese Patent Application No. 2014-233264 (filing date: November 18, 2014), and enjoys the priority of this application. This application incorporates the entire content of this application by reference. technical field [0002] Embodiments of the present invention relate to a chain slack detection device of a passenger conveyor. Background technique [0003] Conventionally, in a passenger conveyor, a plurality of steps are endlessly connected by a step chain. Then, the steps are moved in rotation (circulation) by the drive of the motor connected via the drive chain. Also, the moving handrail is driven by the handrail drive chain. These chains elongate from years of use. Thus, when the chain elongates (slacks), the engagement between the chain and the sprocket deteriorates. [0004] Therefore, maintenance and inspection operations are performed to confirm whether or not slack has occurred in the chain. Checking whether or not slack ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B29/00
Inventor 今井敏满
Owner TOSHIBA ELEVATOR KK
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