CN111398620A - Lateral detection device for speed measurement of double chain wheels of escalator - Google Patents
Lateral detection device for speed measurement of double chain wheels of escalator Download PDFInfo
- Publication number
- CN111398620A CN111398620A CN202010408130.4A CN202010408130A CN111398620A CN 111398620 A CN111398620 A CN 111398620A CN 202010408130 A CN202010408130 A CN 202010408130A CN 111398620 A CN111398620 A CN 111398620A
- Authority
- CN
- China
- Prior art keywords
- escalator
- detection device
- speed measurement
- lateral detection
- phase
- Prior art date
- 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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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
- G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
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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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
- G01D5/24428—Error prevention
- G01D5/24433—Error prevention by mechanical means
- G01D5/24442—Error prevention by mechanical means by mounting means
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Escalators And Moving Walkways (AREA)
Abstract
The invention discloses a lateral detection device for measuring speed of double chain wheels of an escalator. The invention has the advantages that the side detection obviously increases the pulse width and improves the reliability.
Description
Technical Field
The invention relates to the field of escalator speed measurement, in particular to a lateral detection device for escalator double-chain-wheel speed measurement.
Background
At present, two inductance type proximity switches are generally adopted for detecting the tooth surface of a chain wheel at the front side of an escalator, as shown in figures 1-3B, the conventional proximity switches 2 and 3 arranged at the front side are arranged under a chain 4, and oil stains on the chain 4 are easy to drip on the surface of the proximity switches to cause oil stains, so that the detection performance of the proximity switches is influenced. The width of the top surface of the detected width tooth is only slightly larger than the diameter of the proximity switch, the pulse is too narrow, according to the AB phase pulse principle, as shown in figures 3A-3B, the reliable detection needs to have obvious phase difference t between A phase and B phase, because the signal is anti-jitter, the pulse width is required to be adjusted to be larger, the pulse width t1 between A phase and B phase is determined because the width of the top surface of the tooth is narrower, the rotating speed is constant, the pulse width t1 is determined, because the pulse width is narrower, the phase difference t needs to be adjusted to be close to t1/2, the relative stability and reliability are realized, the A, B phase needs to have an overlapping part to distinguish the positive direction and the negative direction, the pulse width is too narrow and is easy to distinguish, the situation that the pulse only has A phase or only has B phase often occurs, both the speed measurement and the direction have problems, and the proximity switch is easy to be damaged, and the false alarm of the, the failure rate is high, the adjustment is difficult, and the adjustment can be carried out for 2-3 hours, so that the working efficiency of maintenance personnel is low. This is where the application needs to be focused on.
Disclosure of Invention
The invention aims to solve the technical problem of providing a lateral detection device for detecting the speed of the double chain wheels of the escalator, which has high detection reliability.
In order to solve the technical problem, the invention provides a lateral detection device for measuring speed of double chain wheels of an escalator.
The proximity switch detects the reference circle part of the chain wheel, the side surface detection obviously increases the pulse width, and the reliability is improved.
The invention has the following advantages:
1) the side surface of the proximity switch is not easily polluted by oil on the chain, so that the workload of maintenance personnel is reduced; because the main driving sprocket of the escalator is outside the machine room, the operation space is small, the maintenance and debugging of maintainers are very difficult, and the side surface installation does not increase any cost, thereby obviously improving the main reliability of stability;
2) the side detection obviously increases the pulse width, and compared with the existing A-direction pulse and B-phase pulse, the reliability is obviously improved by 4-6 times.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a conventional dual sprocket speed measurement and anti-inversion structure;
FIG. 2 is a schematic diagram of the conventional dual sprocket speed measurement and anti-inversion principle;
FIGS. 3A and 3B are schematic diagrams of conventional dual sprocket speed measurement and anti-reversion A-phase and B-phase encoders;
FIG. 4 is a schematic diagram of the construction of a side-mounted proximity switch of the present invention;
description of the figures
1-main driving sprocket; 2-A phase is close to the switch,
3-B is close to the switch; 4-a chain is arranged on the chain,
5-main frame end chain wheel.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Fig. 4 shows a schematic structural diagram of an embodiment of the present invention. As shown in figure 4, the invention provides a lateral detection device for measuring speed of double chain wheels of an escalator, wherein an A-phase proximity switch 2 and a B-phase proximity switch 3 are arranged in the vertical direction of a main driving chain wheel, and the A-phase proximity switch 2 and the B-phase proximity switch 3 detect the side surfaces of two adjacent chain wheel teeth, namely the reference circle part of the detection chain wheel.
In the embodiment of the invention, the proximity switch is arranged on the side surface, the detection width is increased by several times, the pulse width t1 is also increased by several times, a larger phase difference t can be obtained by slightly adjusting, and the method is reliable and stable.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. The utility model provides a lateral detection device that escalator double sprocket measured speed which characterized in that: and a proximity switch is arranged in the vertical direction of the chain wheel and detects the side faces of two adjacent chain wheel teeth.
2. The escalator double sprocket speed measurement lateral detection device according to claim 1, characterized in that: the proximity switch detects a sprocket pitch circle portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010408130.4A CN111398620A (en) | 2020-05-14 | 2020-05-14 | Lateral detection device for speed measurement of double chain wheels of escalator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010408130.4A CN111398620A (en) | 2020-05-14 | 2020-05-14 | Lateral detection device for speed measurement of double chain wheels of escalator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111398620A true CN111398620A (en) | 2020-07-10 |
Family
ID=71433764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010408130.4A Withdrawn CN111398620A (en) | 2020-05-14 | 2020-05-14 | Lateral detection device for speed measurement of double chain wheels of escalator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111398620A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030052668A1 (en) * | 2001-09-19 | 2003-03-20 | Aeon Motor Co., Ltd. | Electronic speed measuring device for a beach buggy |
| CN201594093U (en) * | 2009-11-23 | 2010-09-29 | 昆明理工大学 | Belt speed measuring device |
| CN103738824A (en) * | 2014-01-24 | 2014-04-23 | 苏州富士电梯有限公司 | Anti-reversal detection device of escalator or moving pavement and mounting method thereof |
| CN203653034U (en) * | 2013-08-22 | 2014-06-18 | 江南嘉捷电梯股份有限公司 | Speed detection and reversion prevention safety device for escalator or moving walk |
| CN103925988A (en) * | 2014-04-25 | 2014-07-16 | 哈尔滨工程大学 | Method for measuring torsional vibration of shafting |
| CN105600664A (en) * | 2014-11-20 | 2016-05-25 | 上海现代电梯制造有限公司 | Escalator handrail belt speed detection method |
| CN106335837A (en) * | 2015-07-09 | 2017-01-18 | 东芝电梯株式会社 | Passenger conveyor chain extending detection apparatus and passenger conveyor |
| CN207046660U (en) * | 2017-05-24 | 2018-02-27 | 申龙电梯股份有限公司 | Escalator speed measuring device |
| CN207330096U (en) * | 2017-09-15 | 2018-05-08 | 杭州西奥电梯有限公司 | Speed measuring device and escalator and moving sidewalk |
| CN109230974A (en) * | 2018-08-28 | 2019-01-18 | 塞纳自动梯（佛山）有限公司 | Automatic staircase handrail band velocity deviation detection device and handrail test the speed guard method |
| CN210001403U (en) * | 2019-05-27 | 2020-01-31 | 新疆天山电梯制造有限公司 | Escalator speed detection sensor |
-
2020
- 2020-05-14 CN CN202010408130.4A patent/CN111398620A/en not_active Withdrawn
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030052668A1 (en) * | 2001-09-19 | 2003-03-20 | Aeon Motor Co., Ltd. | Electronic speed measuring device for a beach buggy |
| CN201594093U (en) * | 2009-11-23 | 2010-09-29 | 昆明理工大学 | Belt speed measuring device |
| CN203653034U (en) * | 2013-08-22 | 2014-06-18 | 江南嘉捷电梯股份有限公司 | Speed detection and reversion prevention safety device for escalator or moving walk |
| CN103738824A (en) * | 2014-01-24 | 2014-04-23 | 苏州富士电梯有限公司 | Anti-reversal detection device of escalator or moving pavement and mounting method thereof |
| CN103925988A (en) * | 2014-04-25 | 2014-07-16 | 哈尔滨工程大学 | Method for measuring torsional vibration of shafting |
| CN105600664A (en) * | 2014-11-20 | 2016-05-25 | 上海现代电梯制造有限公司 | Escalator handrail belt speed detection method |
| CN106335837A (en) * | 2015-07-09 | 2017-01-18 | 东芝电梯株式会社 | Passenger conveyor chain extending detection apparatus and passenger conveyor |
| CN207046660U (en) * | 2017-05-24 | 2018-02-27 | 申龙电梯股份有限公司 | Escalator speed measuring device |
| CN207330096U (en) * | 2017-09-15 | 2018-05-08 | 杭州西奥电梯有限公司 | Speed measuring device and escalator and moving sidewalk |
| CN109230974A (en) * | 2018-08-28 | 2019-01-18 | 塞纳自动梯（佛山）有限公司 | Automatic staircase handrail band velocity deviation detection device and handrail test the speed guard method |
| CN210001403U (en) * | 2019-05-27 | 2020-01-31 | 新疆天山电梯制造有限公司 | Escalator speed detection sensor |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200710 |
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| WW01 | Invention patent application withdrawn after publication |