CN104176577B - Detector for absolute position of elevator lift car and detection method - Google Patents
Detector for absolute position of elevator lift car and detection method Download PDFInfo
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- CN104176577B CN104176577B CN201410348119.8A CN201410348119A CN104176577B CN 104176577 B CN104176577 B CN 104176577B CN 201410348119 A CN201410348119 A CN 201410348119A CN 104176577 B CN104176577 B CN 104176577B
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- pinch rollers
- speed limit
- rotary encoder
- limit rope
- speed
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Abstract
The invention discloses a kind of detector for absolute position of elevator lift car and detection method, detector for absolute position of elevator lift car includes limiter of speed, tensioning apparatus, the speed limit rope of ring-type, pinch rollers group, at least one rotary encoder, pinch rollers group includes the first pinch rollers, the second pinch rollers, first pinch rollers, the second pinch rollers are oppositely arranged on the both sides of the speed limit rope of limiter of speed wherein side, and compress speed limit rope, one of rotary encoder is fixedly mounted in the first pinch rollers.During detection, speed limit rope is pressed between the first pinch rollers and the second pinch rollers, the operation of speed limit rope is driven when car is up or descending, speed limit rope band moves the first pinch rollers and rotated with the second pinch rollers, rotary encoder detects the turnning circle of the first pinch rollers, and the absolute position of car can be drawn after computing.Above-mentioned detector for absolute position of elevator lift car measurement accuracy is high, is easily installed, adjusts, can accurately detect the absolute position of lift car.
Description
Technical field
The present invention relates to elevator technology field, more particularly to a kind of detector for absolute position of elevator lift car and detection side
Method.
Background technology
The vehicles of elevator upper and lower building in being lived as people, its security is particularly significant, the control system of elevator
The absolute position of car must be accurately detected, at present, in elevator industry, the method for detection car absolute position is mainly motor
Traction sheave rotary encoder measuring method, this method are compiled to install rotary encoder in motor traction sheave rotating shaft by rotating
The signal of code device feedback realizes the detection to motor speed and car position, and the method has many deficiencies：
A, actuating unit of the motor traction sheave as elevator, its inertia is big, and motive torque and payload change are violent, electricity
Larger elastic slip easily occurs for the steel wire rope of machine traction sheave, causes the car position obtained by motor traction sheave amount of spin
Data error is larger.
B, elevator is in express running, when running into failure needs emergent stopping, the release of brake, and motor traction sheave
Emergent stopping, because car inertia is huge, steel wire rope can occur with motor traction sheave it is obvious skid, now motor traction sheave because
Brake is acted and stopped, and rotary encoder can not detect the skidding distance of steel wire rope.
C, its skidding distance can not be detected by being skidded due to elevator jerk, after elevator faults exclude, then need low speed to run to
Base station carries out position correction, could discharge stranded passenger, recovers normal, and when building are higher, its hoisting depth is higher, low speed fortune
Row needs long time to base station.
Therefore it provides a kind of high detector for absolute position of elevator lift car of measurement accuracy and detection method are very necessary.
The content of the invention
Based on this, the defects of it is an object of the invention to overcome prior art, there is provided a kind of elevator sedan absolute position inspection
Device and detection method are surveyed, realizes 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, including the speed limit rope of limiter of speed, tensioning apparatus, ring-type, compression rolling
Wheel group, at least one rotary encoder, the speed limit rope are wound on the limiter of speed, on the tensioning apparatus, and can be relatively described
Limiter of speed, the tensioning apparatus are rotated, and the speed limit rope of the limiter of speed wherein side is fixedly connected with car, the pinch rollers group
Including the first pinch rollers, the second pinch rollers, first pinch rollers, second pinch rollers are oppositely arranged on speed limit
The both sides of the speed limit rope of device wherein side, and speed limit rope is compressed, one of them described rotary encoder is fixedly mounted on described
In first pinch rollers.
Its further technical characteristic is as follows：
The rotary encoder is two, and one of them described rotary encoder is fixedly mounted on first pinch rollers
Wheel shaft on, another described rotary encoder is fixedly mounted on the wheel shaft of second pinch rollers.
Detector for absolute position of elevator lift car also includes erecting bed, and the erecting bed is arranged in computer room, and described first
Pinch rollers, the second pinch rollers are separately mounted on the erecting bed.
Detector for absolute position of elevator lift car also includes elastic component, and erecting bed is fixedly installed in first pinch rollers
On, the elastic component is pressed in second pinch rollers, and the speed limit rope is pressed on into the first pinch rollers compresses rolling with second
Between wheel.
Detector for absolute position of elevator lift car also includes travel switch, and the elastic component is spring, the travel switch
For adjusting the pretightning force of the spring.
Detector for absolute position of elevator lift car also includes control system, the control system and rotary encoder electricity
Property connection.
The present invention also provides a kind of detection method of elevator sedan absolute position, and this method comprises the following steps：
(1) speed limit rope is pressed between the first pinch rollers and the second pinch rollers, by the limit of limiter of speed wherein side
Speed rope is fixedly connected with car；
(2) car is up or descending, while drives speed limit rope to run, and speed limit rope band moves the first pinch rollers and the second pressure
Tight roller rotates；
(3) rotary encoder detects the turnning circle of the first pinch rollers, and the absolute position of car can be drawn after computing.
Further, rotary encoder is respectively provided with the wheel shaft of the first pinch rollers and the second pinch rollers, by two
The data of rotary encoder carry out computing, compared, and when two rotary encoder feedback signals are consistent, read data；When two
When rotary encoder feedback signal is inconsistent, step (1) is reentered.
Further, the first pinch rollers are fixedly installed on erecting bed, spring is pressed in the second pinch rollers, makes limit
Speed rope is pressed between the first pinch rollers and the second pinch rollers, and sets the pretightning force of travel switch adjustment spring.
The advantages of below to preceding solution or principle illustrate：
Above-mentioned detector for absolute position of elevator lift car, the speed limit rope of limiter of speed wherein side are fixedly connected with car, limit
Speed rope can poorly reflect the displacement of car with unbiased, and first pinch rollers, the second pinch rollers are oppositely arranged on speed limit
The both sides of the speed limit rope of device wherein side, realize the conversion that pinch rollers axle rotational motion is linearly moved to from speed limit rope, its
In a rotary encoder be fixedly mounted in the first pinch rollers, rotary encoder detect the first pinch rollers turning collar
Number, obtain the absolute position of car.
The detection method of above-mentioned elevator sedan absolute position, by the way that speed limit rope is pressed on into the first pinch rollers and the second pressure
Between tight roller, ensure speed limit rope and pinch rollers group reliable transmission, mechanical skidding does not occur；Pass through limiter of speed wherein side
Speed limit rope is fixedly connected with car, and speed limit rope can poorly reflect the displacement of car with unbiased, by the way that the straight line of speed limit rope is transported
Turn is changed to the axle rotational motion of pinch rollers group, and the rotary inertia of pinch rollers is small, much smaller than motor traction sheave, therefore speed limit
The elastic slip restricted in pinch rollers can be ignored, and draw the absolute position of car exactly by rotary encoder.
Brief description of the drawings
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 Fig. 1 partial enlarged drawing.
Description of reference numerals：
1st, limiter of speed, the 20, first pinch rollers, the 21, second pinch rollers, 3, rotary encoder, 4, erecting bed, 5, bullet
Spring, 6, travel switch, 7, speed limit rope, 8, tensioning apparatus, 9, car.
Embodiment
Embodiments of the invention are described in detail below in conjunction with the accompanying drawings：
As shown in figure 1, a kind of detector for absolute position of elevator lift car, including limiter of speed 1, tensioning apparatus 8, the limit of ring-type
Speed rope 7, pinch rollers group, at least one rotary encoder 3, the speed limit rope 7 are wound on the limiter of speed 1, the tensioning apparatus 8
On, and it can be rotated relative to the limiter of speed 1, the tensioning apparatus 8, the limiter of speed 1 is by the speed limit rope 7 by the tensioning
Device 8 is lifted, and the speed limit rope 7 of the wherein side of limiter of speed 1 is fixedly connected with car 9, and the pinch rollers group includes first
Pinch rollers 20, the second pinch rollers 21, first pinch rollers 20, second pinch rollers 21 are oppositely arranged on speed limit
The both sides of the speed limit rope 7 of the wherein side of device 1, and speed limit rope 7 is compressed, one of them described rotary encoder 3 is fixedly mounted on
In first pinch rollers 20.Above-mentioned detector for absolute position of elevator lift car, the speed limit rope 7 of the wherein side of limiter of speed 1 with
Car 9 is fixedly connected, and speed limit rope 7 can poorly reflect the displacement of car 9 with unbiased, and first pinch rollers 20, second are pressed
Tight roller 21 is oppositely arranged on the both sides of the speed limit rope 7 of the wherein side of limiter of speed 1, realizes from speed limit rope 7 and is linearly moved to pressure
The conversion of tight roller shaft rotational motion, one of rotary encoder 3 are fixedly mounted in the first pinch rollers 20, rotary coding
Device 3 detects the turnning circle of the first pinch rollers 20, and the absolute position of car 9, elevator sedan absolute position inspection are drawn after computing
Survey device realizes the accurate detection to elevator sedan absolute position.
As shown in Fig. 2 rotary encoder 3 described in the present embodiment is two, one of them described rotary encoder 3 fixes peace
On the wheel shaft of first pinch rollers 20, another described rotary encoder 3 is fixedly mounted on described second and compresses rolling
On the wheel shaft of wheel 21.First pinch rollers 20, the second pinch rollers 21 diameter can be with identical, can also be different, control system
Computing is carried out to the feedback signals of two encoders, compared, when two feedback signals of rotary encoder 3 are consistent, reads data,
It ensure that the accurate judgement of the position of car 9.
The present embodiment also includes erecting bed 4, and the erecting bed 4 is arranged in computer room, first pinch rollers 20, second
Pinch rollers 21 are separately mounted on the erecting bed 4.Erecting bed 4 causes the first pinch rollers 20, second pinch rollers 21
It is more firmly mounted.
The present embodiment also includes elastic component, and first pinch rollers 20 are fixedly installed on erecting bed 4, the elastic component pressure
In second pinch rollers 21, the speed limit rope 7 is pressed between the first pinch rollers 20 and the second pinch rollers 21, if
Speed limit rope 7 can be preferably pressed between the first pinch rollers 20 and the second pinch rollers 21 by the elastic component put.
The present embodiment also includes travel switch 6, and the elastic component is spring 5, and the travel switch 6 is used to adjust the bullet
The pretightning force of spring 5.The pretightning force of the spring 5 is adjusted by the travel switch 6, ensures that speed limit rope 7 passes with pinch rollers group
It is dynamic reliable.
The present embodiment also includes control system, and the control system is electrically connected with the rotary encoder 3.Control system
Computing is carried out to the feedback signal of rotary encoder 3 and compared, judges the whether normal work of detector for absolute position of elevator lift car
Make.
A kind of detection method of elevator sedan absolute position, this method comprise the following steps：
(1) speed limit rope 7 is pressed between the first pinch rollers 20 and the second pinch rollers 21, by limiter of speed 1 wherein one
The speed limit rope 7 of side is fixedly connected with car 9；
(2) car 9 is up or descending, while drives speed limit rope 7 to run, speed limit rope 7 drive the first pinch rollers 20 with
Second pinch rollers 21 rotate；
(3) rotary encoder 3 detects the turnning circle of the first pinch rollers 20, and the absolute of car 9 can be drawn after computing
Position.
Speed limit rope 7 is pressed between the first pinch rollers 20 and the second pinch rollers 21, ensures speed limit rope 7 and pinch rollers
Group reliable transmission, mechanical skidding does not occur.The speed limit rope 7 of the wherein side of limiter of speed 1 is fixedly connected with car 9, and speed limit rope 7 can be with
Unbiased poorly reflects the displacement of car 9.The linear motion of speed limit rope 7 is converted to the axle rotational motion of pinch rollers group, pressed
The rotary inertia of tight roller is small, and much smaller than motor traction sheave, therefore elastic slip of the speed limit rope 7 in pinch rollers can be ignored
Disregard.Rotary encoder 3 can effectively calculate the absolute position of car 9.
Further, rotary encoder 3 is respectively provided with the wheel shaft of the first pinch rollers 20 and the second pinch rollers 21, will
The data of two rotary encoders 3 carry out computing, compared, and when two feedback signals of rotary encoder 3 are consistent, read data；
When two feedback signals of rotary encoder 3 are inconsistent, step (1) is reentered.Feedback of the control system to two encoders
Signal carries out computing, compared, and when two feedback signals of rotary encoder 3 are consistent, read data, ensure that the position of car 9
Accurate judgement, when two feedback signals of rotary encoder 3 are inconsistent, speed limit rope 7 is readjusted, it is pressed on the first compression
Between the pinch rollers 21 of roller 20 and second.
Further, the first pinch rollers 20 are fixedly installed on erecting bed 4, spring 5 is pressed in the second pinch rollers 21
On, speed limit rope 7 is pressed between the first pinch rollers 20 and the second pinch rollers 21, and set travel switch 6 to adjust bullet
The pretightning force of spring 5.Erecting bed 4 causes the first pinch rollers 20, second pinch rollers 21 to be more firmly mounted, and passes through the row
Cheng Kaiguan 6 adjusts the pretightning force of the spring 5, ensures speed limit rope 7 and pinch rollers group reliable transmission.
Embodiment described above only expresses the embodiment of the present invention, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.
Claims (3)
- A kind of 1. detector for absolute position of elevator lift car, it is characterised in that including limiter of speed, tensioning apparatus, ring-type speed limit Rope, pinch rollers group, erecting bed, spring, travel switch, at least one rotary encoder, the speed limit rope are wound on the speed limit On device, the tensioning apparatus, and it can be rotated relative to the limiter of speed, the tensioning apparatus, the speed limit of the limiter of speed wherein side Rope is fixedly connected with car, and the pinch rollers group includes the first pinch rollers, the second pinch rollers, and described first compresses rolling Wheel, second pinch rollers are oppositely arranged on the both sides of the speed limit rope of limiter of speed wherein side, and one of them described rotation is compiled Code device is fixedly mounted in first pinch rollers, and the erecting bed is arranged in computer room, first pinch rollers, second Pinch rollers are separately mounted on the erecting bed, and on the first pinch rollers fixed setting erecting bed, the spring is pressed in In second pinch rollers, the speed limit rope is pressed between the first pinch rollers and the second pinch rollers, the stroke The pretightning force for adjusting the spring is switched, the rotary encoder is two, and one of them described rotary encoder is fixed On the wheel shaft of first pinch rollers, another described rotary encoder is fixedly mounted on second pinch rollers Wheel shaft on.
- 2. detector for absolute position of elevator lift car according to claim 1, it is characterised in that also including control system, The control system is electrically connected with the rotary encoder.
- 3. a kind of detection method of elevator sedan absolute position, it is characterised in that this method comprises the following steps：(1) the first pinch rollers are fixedly installed on erecting bed, spring is pressed in the second pinch rollers, is pressed on speed limit rope Between first pinch rollers and the second pinch rollers, and the pretightning force of travel switch adjustment spring is set, by limiter of speed wherein The speed limit rope of side is fixedly connected with car；(2) car is up or descending, while drives speed limit rope to run, and speed limit rope band moves the first pinch rollers and compresses rolling with second Wheel rotates；(3) rotary encoder detects the turnning circle of the first pinch rollers, and the absolute position of car can be drawn after computing；(4) rotary encoder is respectively provided with the wheel shaft of the first pinch rollers and the second pinch rollers, by two rotary encoders Data carry out computing, compare, when two rotary encoder feedback signals are consistent, read data；When two rotary encoders When feedback signal is inconsistent, step (1) is reentered.
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 |
|---|---|---|---|
| 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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| Publication Number | Publication Date |
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| CN104176577A CN104176577A (en) | 2014-12-03 |
| CN104176577B true CN104176577B (en) | 2017-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410348119.8A Active CN104176577B (en) | 2014-07-21 | 2014-07-21 | Detector for absolute position of elevator lift car and detection method |
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Families Citing this family (3)
| 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 |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002255464A (en) * | 2001-02-14 | 2002-09-11 | Otis Elevator Co | Position detector for elevator |
| JP4335511B2 (en) * | 2002-10-01 | 2009-09-30 | 三菱電機株式会社 | Elevator equipment |
| JP2004142858A (en) * | 2002-10-23 | 2004-05-20 | Mitsubishi Electric Corp | Elevator cage position detecting device |
| EP2567923A1 (en) * | 2011-09-12 | 2013-03-13 | Wachendorff Automation GmbH & Co. KG | Redundant shaft copying |
| 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 |
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