CN114955762A - Device for improving elevator leveling precision - Google Patents
Device for improving elevator leveling precision Download PDFInfo
- Publication number
- CN114955762A CN114955762A CN202210772911.0A CN202210772911A CN114955762A CN 114955762 A CN114955762 A CN 114955762A CN 202210772911 A CN202210772911 A CN 202210772911A CN 114955762 A CN114955762 A CN 114955762A
- Authority
- CN
- China
- Prior art keywords
- car
- elevator
- leveling
- magnetic tape
- real
- 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.)
- Withdrawn
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/3476—Load weighing or car passenger counting devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/3492—Position or motion detectors or driving means for the detector
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/36—Means for stopping the cars, cages, or skips at predetermined levels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B3/00—Applications of devices for indicating or signalling operating conditions of elevators
- B66B3/02—Position or depth indicators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/12—Checking, lubricating, or cleaning means for ropes, cables or guides
- B66B7/1207—Checking means
- B66B7/1215—Checking means specially adapted for ropes or cables
- B66B7/1223—Checking means specially adapted for ropes or cables by analysing electric variables
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mechanical Engineering (AREA)
- Elevator Control (AREA)
Abstract
The invention discloses a device for improving the leveling precision of an elevator, which comprises: the linear weighing device is used for detecting the real-time weight of the lift car; the linear weighing device comprises an elastic device and a controller capable of outputting linear voltage; the lift car suspension device is connected with the lift car and the motor through a suspension steel wire rope; a hoistway position system for detecting a real-time position of the car; and the control compensation device receives the linear voltage value from the linear weighing device, calculates the elongation of the suspension steel wire rope when the car stops at a station, and controls the motor to move or stop in real time, so that the car can select the position of a preset distance above or below a stopping flat floor according to the real-time weight of the car when the car stops at the station floor. The invention aims to solve the problem of overlarge lifting or sinking amplitude of passengers when the passengers enter or exit the lift car due to the problem of extension of the suspension steel wire rope, and has high reliability and low cost.
Description
Technical Field
The invention relates to the field of elevators, in particular to a device for improving the leveling precision of an elevator.
Background
Generally, an elevator has a rotary encoder attached to a rotary drive shaft of a motor for moving a car up and down, and detects a travel distance of the car by an output pulse from the rotary encoder. In order to prevent a step difference between the car floor and the landing floor when the car is stopped, a shielding plate for determining the stop position of the car is provided for each floor, and a position detecting device for detecting the shielding plate is provided in the car.
Because the system can not judge the accurate position of the elevator car after the elevator is restarted after power failure, the elevator car needs to be reset to zero again. In recent years, a car position detection technology (patent CN107399650A) has been proposed, which can acquire the real-time position of an elevator car and can ensure high leveling precision.
However, when the building floors are more and the load capacity of the car is larger, or the elevator suspension system is only in a 1: 1 one-way winding method, the length of the suspension steel wire rope is longer, and after the floors are leveled, when people get in and out of the car, the suspension steel wire rope is sensitive to weight change, so that the car is obviously lifted or sunk, a larger step difference exists between the floor of the car and the floor of a landing, and the leveling precision is reduced.
Disclosure of Invention
The invention provides a device and a method for improving the leveling precision of an elevator, which can reduce the step difference between a landing and a car floor caused by the lifting or sinking of a car when people get in and out of the car to the maximum extent on the basis of ensuring the leveling precision of the elevator, and have simple structure and easy realization.
In order to solve the above problems, the present invention provides a device for improving the leveling precision of an elevator, comprising:
the linear weighing device is used for detecting the real-time weight of the lift car; the linear weighing device comprises an elastic device and a controller capable of outputting linear voltage;
the lift car suspension device is connected with the lift car and the motor through a suspension steel wire rope;
a hoistway position system for detecting a real-time position of the car;
and the control compensation device receives the linear voltage value from the linear weighing device, calculates the elongation of the suspension steel wire rope when the car stops at a station, and controls the motor to move or stop in real time, so that the car can select the position of a preset distance above or below a stopping flat floor according to the real-time weight of the car when the car stops at the station floor.
Preferably, the control compensation device can receive a voltage signal of the weighing system, the elongation of the suspension steel wire rope is calculated through the voltage signal, the control compensation device can receive a magnetic tape signal of a hoistway position system, the real-time position of the elevator car in the hoistway is judged through the magnetic tape signal, when the elevator car is in an unloaded state, the control compensation device can enable the leveling position when the elevator stops to be located above a preset leveling position, and passengers enter the elevator car; when the elevator car is in a non-idling state, the control compensation device can enable the leveling position when the elevator stops to be below the preset leveling position, and passengers get out of the elevator car.
Preferably, when the elevator car is in a non-unloaded state and the load is less than half of its rated load, the leveling position when the elevator is stopped by the compensating device is controlled to be at a position L1 below a preset leveling position L0, and the person leaves the elevator car; when the car is in a non-empty state and the load is greater than or equal to half of its rated load, the compensating device is controlled so that the landing position at which the elevator is stopped is at a position L2 lower than the preset landing position L0 than the position L1, at which time the person leaves the car.
Preferably, the elastic force of the elastic means is linearly related to the change in the weight of the car.
Preferably, the controller is connected with the elastic device through a wire harness, and the output voltage of the controller is in a linear relation with the elastic force change of the elastic device.
Preferably, the hoistway location system comprises:
a magnetic tape disposed vertically within the hoistway;
and the position sensor is arranged on the side of the car and used for reading the information of the magnetic tape, synchronously moves along with the car in the hoistway and reads the information of the magnetic tape so as to transmit the information into the elevator control system.
Preferably, one end of the magnetic tape is fixed at the top end of the well, and the other end of the magnetic tape is provided with a counterweight block which is positioned at the bottom end of the well; different locations of the magnetic tape contain tracks of different magnetism.
Preferably, the position sensor is fixed on the car, and the horizontal position of the position sensor and the magnetic tape is constant.
Preferably, the magnetic tapes contain bar code information of varying widths.
Preferably, the position sensor reads barcode information of the magnetic tape through an optical device.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the present invention are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1-2 are schematic views of a preferred embodiment of the device for improving the leveling precision of an elevator of the invention.
Description of reference numerals:
11-well 12 motor
13 hang 14 diversion sheaves of wire rope
15 linear weighing device 16 position sensor
17 tape 18 landing floor
19 control compensation device 20 counterweight block
21 car floor 22 car
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-2, the device for improving the leveling accuracy of the elevator of the present invention comprises a linear weighing device 15, a car suspension device, a hoistway position system and a control compensation device 19.
A linear weighing device 15 is arranged at the end of the car suspension system; comprises an elastic device arranged on a rope end and a controller capable of outputting linear voltage; the car suspension device is connected with the car and the motor 12 through a suspension steel wire rope 13, and the suspension steel wire rope 13 slightly extends or contracts when the weight of the car changes; the hoistway position system comprises a magnetic tape 17 vertically arranged in the hoistway and a position sensor 16 arranged on the side of the car and used for reading the information of the magnetic tape, wherein the position sensor 16 follows the car to move synchronously in the hoistway; one end of the magnetic tape 17 is fixed at the top end of the well, and the other end is provided with a counterweight 20, wherein the counterweight 20 is positioned at the bottom end of the well; different locations of the magnetic tape contain tracks of different magnetism.
The control compensation device 19 is arranged in an elevator control system and can calculate the actual elongation of the suspension steel wire rope and control the motor to move or stop.
When people get in and out of the car, the elastic force of the elastic device of the linear weighing device 15 is in a linear relation with the change of the weight of the car, the controller of the linear weighing device outputs a voltage value of 0-5V, and the output voltage of the controller is in a linear relation with the change of the elastic force of the elastic device. The magnetic tape 17 is fixed along the shaft, the position sensor 16 is fixed on the car, and the position sensor reads the information of the magnetic tape in the process of following the movement of the car 22 and transmits the information into the elevator control system;
the control compensation system 19 receives the voltage signal of the linear weighing device 15, converts the voltage signal into the car load, and calculates the elongation of the wire rope at that time. If the set flat position in the elevator control system is L 0 Calculating the half-load condition delta F of the car by the following formula 1 Lower and full load conditions 2 Elongation delta l of lower steel wire rope 1 And Δ l 2 ，
△l 1 ＝△F 1 ·L/(E·A)
△l 2 ＝△F 2 ·L/(E·A)
Wherein, L is the total length of the steel wire rope, E is the elastic modulus of the steel wire rope, and A is the cross-sectional area of the steel wire rope (parameters such as E, A and the like need to be preset in a control system).
From the above results, the actual leveling position can be obtained:
L -1 ＝L 0 +△l 1
L 1 ＝L 0 -△l 1
L 2 ＝L 0 -△l 2
in the above formula, the car position is positive upward and negative downward.
When the car load Δ F is 0 (i.e., the car is called empty), the control device positions the leveling position at which the elevator is stopped at a preset leveling position L 0 Above position L -1 If the person enters the lift car, the lift car sinks, and the leveling position is close to L 0 And is more accurate.
When the load of the car is 0 <. DELTA.F 1 When the elevator stops, the compensating device is controlled to enable the leveling position of the elevator to be at the preset leveling position L 0 Lower position L 1 At the moment, the personnel leave the car, the car is lifted, the step difference between the floor of the landing and the floor of the car is reduced, and the leveling position is more accurate.
When the load of the car is DeltaF >. DeltaF 1 When the elevator stops, the compensating device is controlled to enable the leveling position of the elevator to be positioned at the preset leveling position L 0 Lower position L 2 At the moment, the personnel leave the car, the car is lifted, the step difference between the floor of the landing and the floor of the car is reduced, and the leveling position is more accurate.
Claims (10)
1. An apparatus for improving the leveling accuracy of an elevator, comprising:
the linear weighing device is used for detecting the real-time weight of the lift car; the linear weighing device comprises an elastic device and a controller capable of outputting linear voltage;
the lift car suspension device is connected with the lift car and the motor through a suspension steel wire rope;
a hoistway position system for detecting a real-time position of the car;
and the control compensation device receives the linear voltage value from the linear weighing device, calculates the elongation of the suspension steel wire rope when the car stops at a station, and controls the motor to move or stop in real time, so that the car can select the position of a preset distance above or below a stopping flat floor according to the real-time weight of the car when the car stops at the station floor.
2. The device for improving the leveling precision of the elevator as claimed in claim 1, wherein the control compensation device can receive a voltage signal of a weighing system, calculate the elongation of the suspension steel wire rope through the voltage signal, receive a magnetic tape signal of a hoistway position system, judge the real-time position of the elevator car in the hoistway through the magnetic tape signal, and when the elevator car is in an unloaded state, the control compensation device can enable the leveling position when the elevator stops to be above a preset leveling position, and passengers enter the elevator car; when the elevator car is in a non-idling state, the control compensation device can enable the leveling position when the elevator stops to be below the preset leveling position, and passengers get out of the elevator car.
3. The apparatus for improving the leveling accuracy of an elevator according to claim 1, wherein when the car is in a non-unloaded state and the load is less than half of its rated load, the leveling position at which the elevator is stopped by the compensating device is controlled to be at a position L1 below a preset leveling position L0 when the person leaves the car; when the cage is in a non-empty state and the load is greater than or equal to half of its rated load, the leveling position when the elevator is stopped by the compensating device is controlled to be at a position L2 lower than a preset leveling position L0 than a position L1, and the person leaves the cage.
4. The apparatus of claim 1, wherein the elastic force of the elastic means is linearly related to the change of the weight of the car.
5. The apparatus of claim 1, wherein the controller is connected to the elastic means through a wire harness, and an output voltage of the controller is linearly related to a change of an elastic force of the elastic means.
6. The apparatus for improving elevator leveling accuracy of claim 1 wherein said hoistway position system comprises:
a magnetic tape disposed vertically within the hoistway;
and the position sensor is arranged on the side of the car and used for reading the information of the magnetic tape, synchronously moves along with the car in the hoistway and reads the information of the magnetic tape so as to transmit the information into the elevator control system.
7. The apparatus for improving the leveling accuracy of an elevator as claimed in claim 6, wherein one end of the magnetic tape is fixed at the top end of the shaft, and the other end is provided with a counterweight, and the counterweight is located at the bottom end of the shaft; different locations of the magnetic tape contain tracks of different magnetism.
8. The apparatus of claim 6, wherein the position sensor is fixed to the car and the position sensor is fixed to the magnetic tape at a constant horizontal position.
9. The apparatus for improving the leveling accuracy of an elevator according to claim 6, wherein said magnetic tape contains bar code information of varying widths.
10. The apparatus of claim 6, wherein the position sensor reads the bar code information of the magnetic tape by an optical device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210772911.0A CN114955762A (en) | 2022-06-30 | 2022-06-30 | Device for improving elevator leveling precision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210772911.0A CN114955762A (en) | 2022-06-30 | 2022-06-30 | Device for improving elevator leveling precision |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114955762A true CN114955762A (en) | 2022-08-30 |
Family
ID=82967709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210772911.0A Withdrawn CN114955762A (en) | 2022-06-30 | 2022-06-30 | Device for improving elevator leveling precision |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114955762A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10236747A (en) * | 1997-02-25 | 1998-09-08 | Toshiba Corp | Safety device for elevator |
| US20050230192A1 (en) * | 2004-04-16 | 2005-10-20 | Brant John S | Method and apparatus for improving the leveling performance of an elevator |
| JP2015231890A (en) * | 2014-06-09 | 2015-12-24 | 東芝エレベータ株式会社 | Elevator device and its control method |
| CN207158535U (en) * | 2017-08-17 | 2018-03-30 | 卢卫民 | A kind of lift car position detecting device |
| CN208648473U (en) * | 2018-08-06 | 2019-03-26 | 苏州源拓电子科技有限公司 | A kind of elevator weighing apparatus |
| JP2019077546A (en) * | 2017-10-26 | 2019-05-23 | フジテック株式会社 | elevator |
| US20190382234A1 (en) * | 2018-06-19 | 2019-12-19 | Otis Elevator Company | Position reference device for elevator |
| CN212558945U (en) * | 2020-10-09 | 2021-02-19 | 上海昶屹机电科技有限公司 | Elevator car load real-time detection system |
-
2022
- 2022-06-30 CN CN202210772911.0A patent/CN114955762A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10236747A (en) * | 1997-02-25 | 1998-09-08 | Toshiba Corp | Safety device for elevator |
| US20050230192A1 (en) * | 2004-04-16 | 2005-10-20 | Brant John S | Method and apparatus for improving the leveling performance of an elevator |
| JP2015231890A (en) * | 2014-06-09 | 2015-12-24 | 東芝エレベータ株式会社 | Elevator device and its control method |
| CN207158535U (en) * | 2017-08-17 | 2018-03-30 | 卢卫民 | A kind of lift car position detecting device |
| JP2019077546A (en) * | 2017-10-26 | 2019-05-23 | フジテック株式会社 | elevator |
| US20190382234A1 (en) * | 2018-06-19 | 2019-12-19 | Otis Elevator Company | Position reference device for elevator |
| CN208648473U (en) * | 2018-08-06 | 2019-03-26 | 苏州源拓电子科技有限公司 | A kind of elevator weighing apparatus |
| CN212558945U (en) * | 2020-10-09 | 2021-02-19 | 上海昶屹机电科技有限公司 | Elevator car load real-time detection system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5050362B2 (en) | elevator | |
| CN103097272B (en) | Method for controlling a drive motor of a lift system, and method to implement the method | |
| CN110615331B (en) | Position reference device for elevator | |
| US20200180910A1 (en) | Method and an elevator system for defining an elongation of an elevator car suspension means | |
| JP6987255B2 (en) | Elevator diagnostic system | |
| JP4566587B2 (en) | Elevator control device | |
| JP2007039240A (en) | Counter clearance measuring device of elevator and its measuring method | |
| US4674605A (en) | Automatic elevator load sensor calibration system | |
| CN110589643A (en) | Elevator car re-leveling control system and implementation method thereof | |
| JP2010089869A (en) | Rope slipping detection device of elevator and elevator device using the same | |
| JP4999243B2 (en) | Elevator equipment | |
| JP2008156127A (en) | Elevator | |
| CN114955762A (en) | Device for improving elevator leveling precision | |
| CN111874779A (en) | Method and apparatus for detecting the position of an elevator car | |
| CN111824901B (en) | Elevator installation construction method | |
| JP2001328778A (en) | Elevator counterweight lowering buffer distance measurement device | |
| KR102182981B1 (en) | System for detecting position of an elevator car | |
| CN113767059B (en) | Slip detection system for elevator | |
| CN113905967B (en) | Adjustment amount calculation device and adjustment method for elevator device | |
| JPS63310500A (en) | Lifting base-position controller for crane | |
| JPH05294583A (en) | Device for detecting abrasion of elevator guide shoe | |
| JP7568167B2 (en) | Elevator rail detection system | |
| WO2023144985A1 (en) | Elevator control system | |
| CN118125251A (en) | High-re-leveling precision device for elevator and use method thereof | |
| CN111348505B (en) | Elevator and elevator control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20220830 |