CN104176577A - Device and method for detecting absolute position of elevator car - Google Patents
Device and method for detecting absolute position of elevator car Download PDFInfo
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- CN104176577A CN104176577A CN201410348119.8A CN201410348119A CN104176577A CN 104176577 A CN104176577 A CN 104176577A CN 201410348119 A CN201410348119 A CN 201410348119A CN 104176577 A CN104176577 A CN 104176577A
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- pinch rollers
- speed limit
- limit rope
- absolute position
- rotary encoder
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Abstract
The invention discloses a device and a method for detecting the absolute position of an elevator car. The device for detecting the absolute position of the elevator car comprises a speed limiter, a tensioning device, an annular speed limit rope, a compression roller group and at least one rotary encoder, wherein the compression roller group comprises a first compression roller and a second compression roller, the first compression roller and the second compression roller are oppositely arranged on two sides of the speed limit rope on one side of the speed limiter and compress the speed limit rope, and one rotary encoder is fixedly mounted on the first compression roller. During detecting, the speed limit rope is compressed between the first compression roller and the second compression roller, is driven to operate during ascending and descending of the car, and drives the first compression roller and the second compression roller to rotate; the rotary encoders detects the number of rotating turns of the first compression roller, and the absolute position of the car can be obtained after calculation; and the device for detecting the absolute position of the elevator car is high in measurement accuracy and easy to mount and adjust, and can accurately detect the absolute position of the elevator car.
Description
Technical field
The present invention relates to elevator technology field, particularly a kind of detector for absolute position of elevator lift car and method of inspection.
Background technology
Elevator is as the vehicle of upper and lower building in people's life, its safety is very important, the control system of elevator must accurately detect the absolute location of car, at present, in elevator industry, the method that detects car absolute location is mainly motor traction sheave rotary encoder method of measurement, and the method for installing rotary encoder in the rotating shaft of motor traction sheave, the signal feeding back by rotary encoder is realized the detection to motor speed and car position, and the method exists many deficiencies:
A, motor traction sheave are as the actuating unit of elevator, its inertia is large, power moment and payload change violent, and larger elastic slip easily occurs the steel rope of motor traction sheave, cause the car position data error obtaining by motor traction sheave amount of spin larger.
B, elevator are in express operational process, when running into fault and needing emergent stopping, the release of drg, motor traction sheave emergent stopping, because car inertia is huge, steel rope can occur significantly to skid with motor traction sheave, and now motor traction sheave stops because drg moves, and rotary encoder cannot detect the distance of skidding of steel rope.
C, because elevator emergency stops skidding, cannot detect its distance of skidding, elevator faults needs low cruise to base station, to carry out location correction after getting rid of, could discharge stranded passenger, recover normal, when building are higher, its hoisting depth is higher, and low cruise needs long time to base station.
Therefore, provide detector for absolute position of elevator lift car and method of inspection that a kind of survey precision is high very necessary.
Summary of the invention
Based on this, the object of the invention is to overcome the defect of prior art, a kind of detector for absolute position of elevator lift car and method of inspection are provided, realize the accurate detection of elevator sedan absolute position.
Its technical scheme is as follows:
A kind of detector for absolute position of elevator lift car, comprise velocity limiter, tightening device, the speed limit rope of ring-type, pinch rollers group, at least one rotary encoder, described speed limit rope is around described velocity limiter, on described tightening device, and can relatively described velocity limiter, described tightening device rotates, this velocity limiter wherein speed limit rope of a side is fixedly connected with car, described pinch rollers group comprises the first pinch rollers, the second pinch rollers, described the first pinch rollers, described the second pinch rollers is oppositely arranged on the wherein both sides of the speed limit rope of a side of velocity limiter, and speed limit rope is compressed, described in one of them, rotary encoder is fixedly mounted in described the first pinch rollers.
Its further technical characterictic is as follows:
Described rotary encoder is two, and described in one of them, rotary encoder is fixedly mounted on the wheel shaft of described the first pinch rollers, and described in another, rotary encoder is fixedly mounted on the wheel shaft of described the second pinch rollers.
Detector for absolute position of elevator lift car also comprises erecting bed, and described erecting bed is arranged in machine room, and described the first pinch rollers, the second pinch rollers are arranged on respectively on described erecting bed.
Detector for absolute position of elevator lift car also comprises elastic component, and described the first pinch rollers is fixedly installed on erecting bed, and described elastic component is pressed in described the second pinch rollers, and described speed limit rope is pressed between the first pinch rollers and the second pinch rollers.
Detector for absolute position of elevator lift car also comprises travel switch, and described elastic component is spring, and described travel switch is for adjusting the predetermincd tension of described spring.
Detector for absolute position of elevator lift car also comprises control system, and described control system and described rotary encoder are electrically connected.
The present invention also provides a kind of method of inspection of elevator sedan absolute position, and the method comprises the steps:
(1) speed limit rope is pressed between the first pinch rollers and the second pinch rollers, by velocity limiter wherein the speed limit rope of a side be fixedly connected with car;
(2) car is up or descending, drives the operation of speed limit rope simultaneously, and moving the first pinch rollers of speed limit rope band and the second pinch rollers are rotated;
(3) rotary encoder detects the rotation number of turns of the first pinch rollers, the absolute location that can draw car after computing.
Further, on the wheel shaft of the first pinch rollers and the second pinch rollers, rotary encoder is all set, the data of two rotary encoders are carried out to computing, comparison, when two rotary encoder feedback signals are consistent, reading out data; When two rotary encoder feedback signals are inconsistent, reenter step (1).
Further, the first pinch rollers is fixedly installed on erecting bed, spring is pressed in the second pinch rollers, speed limit rope is pressed between the first pinch rollers and the second pinch rollers, and the predetermincd tension that travel switch is adjusted spring is set.
Below the advantage of aforementioned techniques scheme or principle are described:
Above-mentioned detector for absolute position of elevator lift car, the velocity limiter wherein speed limit rope of a side is fixedly connected with car, speed limit rope can reflect to bias free the displacement of car, described the first pinch rollers, the second pinch rollers are oppositely arranged on the wherein both sides of the speed limit rope of a side of velocity limiter, realized the conversion that is linearly moved to the rotational motion of pinch rollers axle from speed limit rope, one of them rotary encoder is fixedly mounted in the first pinch rollers, rotary encoder detects the rotation number of turns of the first pinch rollers, obtains the absolute location of car.
The method of inspection of above-mentioned elevator sedan absolute position, by speed limit rope being pressed between the first pinch rollers and the second pinch rollers, guarantees speed limit rope and the reliable transmission of pinch rollers group, machinery does not occur and skid; By velocity limiter wherein the speed limit rope of a side be fixedly connected with car, speed limit rope can reflect to bias free the displacement of car, by the straight-line motion of speed limit rope being converted to the axle rotational motion of pinch rollers group, the rotor inertia of pinch rollers is little, much smaller than motor traction sheave, therefore the elastic slip of speed limit rope in pinch rollers is negligible, the absolute location that draws exactly car by rotary encoder.
Accompanying drawing explanation
Fig. 1 is the structural representation of the detector for absolute position of elevator lift car described in the embodiment of the present invention;
Fig. 2 is the partial enlarged drawing of Fig. 1.
Description of reference numerals:
1, velocity limiter, the 20, first pinch rollers, the 21, second pinch rollers, 3, rotary encoder, 4, erecting bed, 5, spring, 6, travel switch, 7, speed limit rope, 8, tightening device, 9, car.
The specific embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated:
As shown in Figure 1, a kind of detector for absolute position of elevator lift car, comprise velocity limiter 1, tightening device 8, the speed limit rope 7 of ring-type, pinch rollers group, at least one rotary encoder 3, described speed limit rope 7 is around described velocity limiter 1, on described tightening device 8, and can relatively described velocity limiter 1, described tightening device 8 rotates, described velocity limiter 1 is sling described tightening device 8 come by described speed limit rope 7, this velocity limiter 1 wherein speed limit rope 7 of a side is fixedly connected with car 9, described pinch rollers group comprises the first pinch rollers 20, the second pinch rollers 21, described the first pinch rollers 20, described the second pinch rollers 21 is oppositely arranged on the wherein both sides of the speed limit rope 7 of a side of velocity limiter 1, and speed limit rope 7 is compressed, described in one of them, rotary encoder 3 is fixedly mounted in described the first pinch rollers 20.Above-mentioned detector for absolute position of elevator lift car, the velocity limiter 1 wherein speed limit rope 7 of a side is fixedly connected with car 9, speed limit rope 7 can reflect to bias free the displacement of car 9, described the first pinch rollers 20, the second pinch rollers 21 is oppositely arranged on the wherein both sides of the speed limit rope 7 of a side of velocity limiter 1, realized the conversion that is linearly moved to the rotational motion of pinch rollers axle from speed limit rope 7, one of them rotary encoder 3 is fixedly mounted in the first pinch rollers 20, rotary encoder 3 detects the rotation number of turns of the first pinch rollers 20, after computing, draw the absolute location of car 9, detector for absolute position of elevator lift car has been realized the accurate detection to elevator sedan absolute position.
As shown in Figure 2, rotary encoder 3 is two described in the present embodiment, and described in one of them, rotary encoder 3 is fixedly mounted on the wheel shaft of described the first pinch rollers 20, and described in another, rotary encoder 3 is fixedly mounted on the wheel shaft of described the second pinch rollers 21.The diameter of the first pinch rollers 20, the second pinch rollers 21 can be identical, also can be different, control system is carried out computing, comparison to the feedback signal of two coders, when two rotary encoders, 3 feedback signals are when consistent, reading out data, has guaranteed the accurate judgement of car 9 positions.
The present embodiment also comprises erecting bed 4, and described erecting bed 4 is arranged in machine room, and described the first pinch rollers 20, the second pinch rollers 21 are arranged on respectively on described erecting bed 4.Erecting bed 4 makes the installation of the first pinch rollers 20, the second pinch rollers 21 more firm.
The present embodiment also comprises elastic component, described the first pinch rollers 20 is fixedly installed on erecting bed 4, described elastic component is pressed in described the second pinch rollers 21, described speed limit rope 7 is pressed between the first pinch rollers 20 and the second pinch rollers 21, and the elastic component of setting can be pressed on speed limit rope 7 between the first pinch rollers 20 and the second pinch rollers 21 better.
The present embodiment also comprises travel switch 6, and described elastic component is spring 5, and described travel switch 6 is for adjusting the predetermincd tension of described spring 5.The predetermincd tension of adjusting described spring 5 by described travel switch 6, guarantees speed limit rope 7 and the reliable transmission of pinch rollers group.
The present embodiment also comprises control system, and described control system and described rotary encoder 3 are electrically connected.Control system is carried out computing and comparison to the feedback signal of rotary encoder 3, judges whether detector for absolute position of elevator lift car normally works.
A method of inspection for elevator sedan absolute position, the method comprises the steps:
(1) speed limit rope 7 is pressed between the first pinch rollers 20 and the second pinch rollers 21, by velocity limiter 1 wherein the speed limit rope 7 of a side be fixedly connected with car 9;
(2) car 9 is up or descending, drives 7 operations of speed limit rope simultaneously, and speed limit rope 7 drives the first pinch rollers 20 and the second pinch rollers 21 to rotate;
(3) rotary encoder 3 detects the rotation number of turns of the first pinch rollers 20, the absolute location that can draw car 9 after computing.
Speed limit rope 7 is pressed between the first pinch rollers 20 and the second pinch rollers 21, guarantees speed limit rope 7 and the reliable transmission of pinch rollers group, machinery does not occur and skid.The velocity limiter 1 wherein speed limit rope 7 of a side is fixedly connected with car 9, and speed limit rope 7 can reflect to bias free the displacement of car 9.The straight-line motion of speed limit rope 7 is converted to the axle rotational motion of pinch rollers group, the rotor inertia of pinch rollers is little, and much smaller than motor traction sheave, so the elastic slip of speed limit rope 7 in pinch rollers is negligible.Rotary encoder 3 can calculate the absolute location of car 9 effectively.
Further, on the wheel shaft of the first pinch rollers 20 and the second pinch rollers 21, rotary encoder 3 is all set, the data of two rotary encoders 3 are carried out to computing, comparison, when two rotary encoders, 3 feedback signals are when consistent, reading out data; When two rotary encoders, 3 feedback signals are when inconsistent, reenter step (1).Control system is carried out computing, comparison to the feedback signal of two coders, when two rotary encoders, 3 feedback signals are when consistent, reading out data, guaranteed the accurate judgement of car 9 positions, when two rotary encoders, 3 feedback signals are when inconsistent, readjust speed limit rope 7, it is pressed between the first pinch rollers 20 and the second pinch rollers 21.
Further, the first pinch rollers 20 is fixedly installed on erecting bed 4, spring 5 is pressed in the second pinch rollers 21, speed limit rope 7 is pressed between the first pinch rollers 20 and the second pinch rollers 21, and the predetermincd tension that travel switch 6 is adjusted spring 5 is set.Erecting bed 4 makes the installation of the first pinch rollers 20, the second pinch rollers 21 more firm, adjusts the predetermincd tension of described spring 5 by described travel switch 6, guarantees speed limit rope 7 and the reliable transmission of pinch rollers group.
The above embodiment has only expressed the specific embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (9)
1. a detector for absolute position of elevator lift car, it is characterized in that, comprise velocity limiter, tightening device, the speed limit rope of ring-type, pinch rollers group, at least one rotary encoder, described speed limit rope is around described velocity limiter, on described tightening device, and can relatively described velocity limiter, described tightening device rotates, this velocity limiter wherein speed limit rope of a side is fixedly connected with car, described pinch rollers group comprises the first pinch rollers, the second pinch rollers, described the first pinch rollers, described the second pinch rollers is oppositely arranged on the wherein both sides of the speed limit rope of a side of velocity limiter, and speed limit rope is compressed, described in one of them, rotary encoder is fixedly mounted in described the first pinch rollers.
2. detector for absolute position of elevator lift car according to claim 1, it is characterized in that, described rotary encoder is two, described in one of them, rotary encoder is fixedly mounted on the wheel shaft of described the first pinch rollers, and described in another, rotary encoder is fixedly mounted on the wheel shaft of described the second pinch rollers.
3. detector for absolute position of elevator lift car according to claim 2, is characterized in that, also comprises erecting bed, and described erecting bed is arranged in machine room, and described the first pinch rollers, the second pinch rollers are arranged on respectively on described erecting bed.
4. detector for absolute position of elevator lift car according to claim 3, it is characterized in that, also comprise elastic component, described the first pinch rollers is fixedly installed on erecting bed, described elastic component is pressed in described the second pinch rollers, and described speed limit rope is pressed between the first pinch rollers and the second pinch rollers.
5. detector for absolute position of elevator lift car according to claim 4, is characterized in that, also comprises travel switch, and described elastic component is spring, and described travel switch is for adjusting the predetermincd tension of described spring.
6. according to the detector for absolute position of elevator lift car described in claim 1-5 any one, it is characterized in that, also comprise control system, described control system and described rotary encoder are electrically connected.
7. a method of inspection for elevator sedan absolute position, is characterized in that, the method comprises the steps:
(1) speed limit rope is pressed between the first pinch rollers and the second pinch rollers, by velocity limiter wherein the speed limit rope of a side be fixedly connected with car;
(2) car is up or descending, drives the operation of speed limit rope simultaneously, and moving the first pinch rollers of speed limit rope band and the second pinch rollers are rotated;
(3) rotary encoder detects the rotation number of turns of the first pinch rollers, the absolute location that can draw car after computing.
8. the method for inspection of elevator sedan absolute position as claimed in claim 7, is characterized in that, further comprises the steps:
On the wheel shaft of the first pinch rollers and the second pinch rollers, rotary encoder is all set, the data of two rotary encoders are carried out to computing, comparison, when two rotary encoder feedback signals are consistent, reading out data; When two rotary encoder feedback signals are inconsistent, reenter step (1).
9. the method for inspection of elevator sedan absolute position as claimed in claim 6, is characterized in that, further comprises the steps:
The first pinch rollers is fixedly installed on erecting bed, spring is pressed in the second pinch rollers, speed limit rope is pressed between the first pinch rollers and the second pinch rollers, and the predetermincd tension that travel switch is adjusted spring is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410348119.8A CN104176577B (en) | 2014-07-21 | 2014-07-21 | Detector for absolute position of elevator lift car and detection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410348119.8A CN104176577B (en) | 2014-07-21 | 2014-07-21 | Detector for absolute position of elevator lift car and detection method |
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| CN104176577A true CN104176577A (en) | 2014-12-03 |
| CN104176577B CN104176577B (en) | 2017-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106219347A (en) * | 2016-09-20 | 2016-12-14 | 广州特种机电设备检测研究院 | A kind of detection apparatus and method of elevator malfunction fault |
| CN108840193A (en) * | 2018-08-29 | 2018-11-20 | 湖州市特种设备检测研究院 | A kind of elevator traction sheave slippage detecting device and its detection method |
| CN111498633A (en) * | 2020-05-22 | 2020-08-07 | 福建快科城建增设电梯股份有限公司 | Elevator motion sensor and working method thereof |
| CN112537707A (en) * | 2019-09-23 | 2021-03-23 | 杭州沪宁电梯部件股份有限公司 | Roller sensor |
| US11548758B2 (en) | 2017-06-30 | 2023-01-10 | Otis Elevator Company | Health monitoring systems and methods for elevator systems |
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| JP2002255464A (en) * | 2001-02-14 | 2002-09-11 | Otis Elevator Co | Position detector for elevator |
| CN1486918A (en) * | 2002-10-01 | 2004-04-07 | 三菱电机株式会社 | Controller for elevator |
| JP2004142858A (en) * | 2002-10-23 | 2004-05-20 | Mitsubishi Electric Corp | Elevator cage position detecting device |
| CN102344063A (en) * | 2011-09-29 | 2012-02-08 | 日立电梯（中国）有限公司 | Detection system of elevator sedan absolute position |
| EP2567923A1 (en) * | 2011-09-12 | 2013-03-13 | Wachendorff Automation GmbH & Co. KG | Redundant shaft copying |
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| JP2002255464A (en) * | 2001-02-14 | 2002-09-11 | Otis Elevator Co | Position detector for elevator |
| CN1486918A (en) * | 2002-10-01 | 2004-04-07 | 三菱电机株式会社 | Controller for elevator |
| JP2004142858A (en) * | 2002-10-23 | 2004-05-20 | Mitsubishi Electric Corp | Elevator cage position detecting device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106219347A (en) * | 2016-09-20 | 2016-12-14 | 广州特种机电设备检测研究院 | A kind of detection apparatus and method of elevator malfunction fault |
| US11548758B2 (en) | 2017-06-30 | 2023-01-10 | Otis Elevator Company | Health monitoring systems and methods for elevator systems |
| CN108840193A (en) * | 2018-08-29 | 2018-11-20 | 湖州市特种设备检测研究院 | A kind of elevator traction sheave slippage detecting device and its detection method |
| CN108840193B (en) * | 2018-08-29 | 2024-01-12 | 湖州市特种设备检测研究院 | Elevator traction sheave slippage detection device and detection method thereof |
| CN112537707A (en) * | 2019-09-23 | 2021-03-23 | 杭州沪宁电梯部件股份有限公司 | Roller sensor |
| CN112537707B (en) * | 2019-09-23 | 2024-06-04 | 杭州沪宁电梯部件股份有限公司 | Roller sensor |
| CN111498633A (en) * | 2020-05-22 | 2020-08-07 | 福建快科城建增设电梯股份有限公司 | Elevator motion sensor and working method thereof |
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| CN104176577B (en) | 2017-12-22 |
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