CN104860173A - Synchronous control system for four tractors of elevator - Google Patents
Synchronous control system for four tractors of elevator Download PDFInfo
- Publication number
- CN104860173A CN104860173A CN201510255909.6A CN201510255909A CN104860173A CN 104860173 A CN104860173 A CN 104860173A CN 201510255909 A CN201510255909 A CN 201510255909A CN 104860173 A CN104860173 A CN 104860173A
- Authority
- CN
- China
- Prior art keywords
- elevator
- frequency converter
- towing
- speed
- primary transducer
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/04—Driving gear ; Details thereof, e.g. seals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/02—Control systems without regulation, i.e. without retroactive action
- B66B1/06—Control systems without regulation, i.e. without retroactive action electric
Abstract
The invention relates to a synchronous control system for four tractors of an elevator. Four frequency converters control the four tractors respectively. The four tractors are adopted for lifting a lift car. The main frequency converter is set to be in a speed control mode in the closed-loop vector control mode, and the main frequency converter controls the operating speed of the main tractor in real time according to an operation instruction and a speed instruction of a programmable logic controller and a main tractor speed signal fed back by an encoder. The three slave frequency converters are set to be in a torque control mode in the closed-loop vector control mode, and the slave frequency converters control the operating speed of the slave tractors in real time according to an operation instruction of the programmable logic controller, a torque instruction output by the main frequency converter in real time, and a slave tractor speed signal fed back by the encoder. In this way, based on the improvement of the rated loading capacity of the elevator, synchronous control over the four tractors for lifting is achieved, so that stable control is guaranteed while performance is improved. The market requirement for high-loading-capacity elevators is met.
Description
Technical field
The present invention relates to a kind of apparatus for controlling elevator, particularly the synchronous control system of a kind of elevator four towing machines.
Background technology
Current all elevators all adopt 1 towing machine to promote car, and the nominal payload of elevator is limited to the parameter such as axle load and power of motor of towing machine, and the nominal payload of elevator cannot be improved further.
Summary of the invention
The present invention be directed to the problem that 1 towing machine load-carrying capacity is limited, propose the synchronous control system of a kind of elevator four towing machines, have employed 4 towing machines to promote car, while the nominal payload of elevator is promoted, consider that overcoming 4 towing machines promotes the control synchronization problem brought, ensure while improving performance to control to stablize.
Technical scheme of the present invention is: the synchronous control system of a kind of elevator four towing machines, comprise 1 programmable controller, 4 frequency converters, 4 block encoder expansion cards, 4 identical geared machine, 4 incremental rotary encoders, 1 in 4 frequency converters is primary transducer, all the other 3 conducts are from frequency converter, 4 frequency converters are separately installed with coder expansion card, 4 frequency converters control 4 towing machines respectively, and the electrical motor of 4 towing machines goes out axle head and is separately installed with incremental rotary encoder;
Direction run signal and speed signal are delivered to the digital quantity input end of primary transducer by programmable controller, run signal is fed through 3 digital quantity input ends from frequency converter, the real-time Driving Torque of primary transducer is sent to 3 analog input ends from frequency converter simultaneously;
The output signal of 4 incremental rotary encoders sends into corresponding coder expansion card respectively, incremental rotary encoder signal is delivered to corresponding frequency converter by 4 block encoder expansion cards, send into the high speed input port of Programmable Logic Controller after the speed signal encoded device expansion card frequency division of 4 incremental rotary encoder outputs respectively, Programmable Logic Controller compares the running velocity of monitoring 4 towing machines.
Described primary transducer is set to the speed control mode in closed-loop vector master mode, primary transducer is run according to Programmable Logic Controller, the main towing machine speed signal of speed command and encoder feedback, the running velocity of the main towing machine of real-time control, the real-time Driving Torque of primary transducer is sent to 3 analog input ends from frequency converter.
Described 3 torque control model be set to from frequency converter closed-loop vector master mode, the torque instruction exported in real time according to the operating instruction of Programmable Logic Controller, primary transducer from frequency converter and encoder feedback from towing machine speed signal, control the running velocity from towing machine in real time.
The geared machine that described principal and subordinate 4 is identical is arranged symmetrically in four ends at elevator top.
Beneficial effect of the present invention is: the synchronous control system of elevator of the present invention four towing machines, have employed 4 towing machine Synchronous lifting cars, makes the nominal payload of elevator improve 3 times, meet the market demand of big load elevator.
Accompanying drawing explanation
Fig. 1 is the synchronous control system constructional drawing of elevator of the present invention four towing machines.
Detailed description of the invention
The synchronous control system constructional drawing of elevator four towing machines as shown in Figure 1, system comprises 1 programmable controller, 4 frequency converters, 4 block encoder expansion cards (PG card), 4 geared machines, 4 incremental rotary encoders.Elevator adopts programmable controller to control, 1 in 4 frequency converters is primary transducer, all the other 3 conducts are from frequency converter, 4 frequency converters are separately installed with coder expansion card, 4 frequency converters control 4 towing machines respectively, the electrical motor of 4 towing machines goes out axle head and is separately installed with incremental rotary encoder, the output signal of coder sends into coder expansion card, code device signal except delivering to frequency converter, is also sent into the high speed input port of Programmable Logic Controller by coder expansion card after frequency division.
When elevator enters running state, direction run signal and speed signal are delivered to the digital quantity input end of primary transducer by Programmable Logic Controller respectively, run signal are fed through 3 digital quantity input ends from frequency converter simultaneously.Primary transducer is set to the speed control mode in closed-loop vector master mode, primary transducer according to running, the main towing machine speed signal of speed command and encoder feedback controls the running velocity of main towing machine in real time, the real-time Driving Torque of primary transducer is sent to 3 analog input ends from frequency converter simultaneously.3 are set to the torque control model closed-loop vector master mode from frequency converter, from the running velocity that from towing machine speed signal in real time control from towing machine of frequency converter according to operating instruction, torque instruction and encoder feedback.Because the Driving Torque from frequency converter follows the Driving Torque of primary transducer completely, therefore the Driving Torque of 4 towing machines is equal.Separately because the parameter such as electrical motor rated speed of rotation, power of motor, reduction ratio, traction sheave diameter of 4 towing machines is identical, 4 towing machines are also four ends being arranged symmetrically in elevator top, therefore can ensure synchronous hoisting elevator car.
The high speed input port of Programmable Logic Controller is sent into respectively after the speed signal encoded device expansion card frequency division of 4 coders, after control program logic operation, convert the real time execution speed of 4 towing machines to and compared, when causing the running velocity deviation of 4 towing machines excessive due to certain fault, control program cuts off output in time, stop elevator running, avoid the generation of dangerous situation.
Claims (4)
1. the synchronous control system of an elevator four towing machines, it is characterized in that, comprise 1 programmable controller, 4 frequency converters, 4 block encoder expansion cards, 4 identical geared machine, 4 incremental rotary encoders, 1 in 4 frequency converters is primary transducer, all the other 3 conducts are from frequency converter, 4 frequency converters are separately installed with coder expansion card, and 4 frequency converters control 4 towing machines respectively, and the electrical motor of 4 towing machines goes out axle head and is separately installed with incremental rotary encoder; Direction run signal and speed signal are delivered to the digital quantity input end of primary transducer by programmable controller, run signal is fed through 3 digital quantity input ends from frequency converter, the real-time Driving Torque of primary transducer is sent to 3 analog input ends from frequency converter simultaneously; The output signal of 4 incremental rotary encoders sends into corresponding coder expansion card respectively, incremental rotary encoder signal is delivered to corresponding frequency converter by 4 block encoder expansion cards, send into the high speed input port of Programmable Logic Controller after the speed signal encoded device expansion card frequency division of 4 incremental rotary encoder outputs respectively, Programmable Logic Controller compares the running velocity of monitoring 4 towing machines.
2. the synchronous control system of elevator four towing machines according to claim 1, it is characterized in that, described primary transducer is set to the speed control mode in closed-loop vector master mode, primary transducer is run according to Programmable Logic Controller, the main towing machine speed signal of speed command and encoder feedback, the running velocity of the main towing machine of real-time control, the real-time Driving Torque of primary transducer is sent to 3 analog input ends from frequency converter.
3. the synchronous control system of elevator four towing machines according to claim 1, it is characterized in that, described 3 torque control model be set to from frequency converter closed-loop vector master mode, the torque instruction exported in real time according to the operating instruction of Programmable Logic Controller, primary transducer from frequency converter and encoder feedback from towing machine speed signal, control the running velocity from towing machine in real time.
4., according to the synchronous control system of the two towing machine of the arbitrary described elevator of claims 1 to 3, it is characterized in that, the geared machine that described principal and subordinate 4 is identical is arranged symmetrically in four ends at elevator top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510255909.6A CN104860173A (en) | 2015-05-19 | 2015-05-19 | Synchronous control system for four tractors of elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510255909.6A CN104860173A (en) | 2015-05-19 | 2015-05-19 | Synchronous control system for four tractors of elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104860173A true CN104860173A (en) | 2015-08-26 |
Family
ID=53906424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510255909.6A Pending CN104860173A (en) | 2015-05-19 | 2015-05-19 | Synchronous control system for four tractors of elevator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104860173A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105523452A (en) * | 2016-03-09 | 2016-04-27 | 江苏通用电梯有限公司 | Multi-tractor synchronous control system and operation method thereof |
| CN108988696A (en) * | 2018-08-01 | 2018-12-11 | 云南省机械研究设计院 | A kind of motor synchronous control method, apparatus and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07257830A (en) * | 1994-03-17 | 1995-10-09 | Hitachi Ltd | Vibration suppressing and controlling device of elevator |
| JPH11292411A (en) * | 1998-04-10 | 1999-10-26 | Hitachi Ltd | Speed control device for elevator |
| CN201850015U (en) * | 2010-07-14 | 2011-06-01 | 湖南金塔机械制造有限公司 | Electric control system based on IPC (industrial personal computer) for mine elevator |
| CN202953637U (en) * | 2012-11-29 | 2013-05-29 | 广州市京龙工程机械有限公司 | Balancing and positioning control system of construction elevator with four stand columns |
| CN104310222A (en) * | 2014-10-27 | 2015-01-28 | 天津起重设备有限公司 | Gantry crane with function of four-point balance control |
-
2015
- 2015-05-19 CN CN201510255909.6A patent/CN104860173A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07257830A (en) * | 1994-03-17 | 1995-10-09 | Hitachi Ltd | Vibration suppressing and controlling device of elevator |
| JPH11292411A (en) * | 1998-04-10 | 1999-10-26 | Hitachi Ltd | Speed control device for elevator |
| CN201850015U (en) * | 2010-07-14 | 2011-06-01 | 湖南金塔机械制造有限公司 | Electric control system based on IPC (industrial personal computer) for mine elevator |
| CN202953637U (en) * | 2012-11-29 | 2013-05-29 | 广州市京龙工程机械有限公司 | Balancing and positioning control system of construction elevator with four stand columns |
| CN104310222A (en) * | 2014-10-27 | 2015-01-28 | 天津起重设备有限公司 | Gantry crane with function of four-point balance control |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105523452A (en) * | 2016-03-09 | 2016-04-27 | 江苏通用电梯有限公司 | Multi-tractor synchronous control system and operation method thereof |
| WO2017152432A1 (en) * | 2016-03-09 | 2017-09-14 | 江苏通用电梯有限公司 | Multi-tractor synchronous control system and working method therefor |
| CN108988696A (en) * | 2018-08-01 | 2018-12-11 | 云南省机械研究设计院 | A kind of motor synchronous control method, apparatus and system |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150826 |