CN1168559C - Automatic control system for straightening puller of steel billet - Google Patents
Automatic control system for straightening puller of steel billet Download PDFInfo
- Publication number
- CN1168559C CN1168559C CNB991174798A CN99117479A CN1168559C CN 1168559 C CN1168559 C CN 1168559C CN B991174798 A CNB991174798 A CN B991174798A CN 99117479 A CN99117479 A CN 99117479A CN 1168559 C CN1168559 C CN 1168559C
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- straightening
- output
- excitation
- programmable logic
- logic controller
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Abstract
The present invention discloses an automatic control system for a straightening puller of steel billets. The present invention has the technical scheme that running signals needed to be operated by a system are conveyed to a programmable controller (5); the programmable controller (5) conveys the signals to speed regulators (3a), (3b) so as to control the operation of straightening pulling motor groups (9a), (9b). The present invention adopts a signal treated by the programmable controller by a coder to serve as a transmission signal of the system, and stability of the signal is high; the driving operation of a straightening puller is changed into the transmission of a group of upper rollers and the transmission of a group of lower rollers, which improves the synchronous performance of the whole system and enhances the stability of pulling speed; the integrated numerical control speed regulator is adopted, which enables a circuit of the system to be simple and the maintenance of the system to be convenient.
Description
Technical field
The invention belongs to automation field, particularly a kind of transmission system that is used to control motor speed.
Background technology
The straightening puller of steel billet control system adopts the controllable silicon DC speed regulator to organize straightening machine dispersion transmission mostly at present, and the output signal of gathering the multiple electric motors that drives the rotation of straightening machine is the actuating signal of system.Carry out transmission for each some groups owing to drive the multiple electric motors branch up-down rollers of straightening machine running, make the linear degree of its output signal poor, whole device pulling rate fluctuation is big, and is big to the quality influence of strand.Owing to adopt many group controllable silicon DC speed regulator control whole systems, make the system supplymentary electric elements many, complex circuit, maintenance difficult in addition.
Summary of the invention
Purpose of the present invention provides a kind of automatic control system for straightening puller of steel billet.It is simple in structure, and the pulling rate of straightening machine is stable, can guarantee the quality of strand.
For reaching above-mentioned purpose, the invention is characterized in that the armature of standby speed regulator goes out end, the excitation output is gone into end with the armature of automatic switchover device and is connected with excitation input end, given input is connected to set output terminal with Programmable Logic Controller; The armature input of automatic switchover device, excitation input end are connected with the output of speed regulator, an armature output of automatic switchover device is connected with the straightening motor unit, the excitation input end of straightening motor unit is connected with excitation fine setting output, another armature output of automatic switchover device is connected with the straightening motor unit, and the excitation input end of straightening motor unit is connected with excitation fine setting output; The given input of speed regulator and being connected of Programmable Logic Controller to set output terminal; An input of Programmable Logic Controller is connected with the output of encoder, and another input of Programmable Logic Controller is connected with the output of encoder, three inputs of Programmable Logic Controller respectively with master-control room, water the steel operating room and be connected with the straightening operating room.
The axle and the encoder of motor link together.The straightening motor unit that the straightening motor is formed for several motor parallels.
The present invention with rotary encoder as calculated the signal after the machine digital processing be the actuating signal of system, its signal stabilization improves.The multiple electric motors up-down rollers that drives the running of straightening machine is carried out transmission for each some groups change each one group of transmission of up-down rollers into, improve the net synchronization capability of whole system greatly, improved the stability of pulling rate; Owing to adopt integrated digital speed adjuster, make the circuit of system simple, easy to maintenance simultaneously.
The present invention is described further below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is control circuit figure of the present invention.
The specific embodiment
The armature of standby speed regulator 1 is gone out end, excitation output go into to hold with the armature of automatic switchover device 2 and be connected with excitation input end, given input is connected to set output terminal with Programmable Logic Controller 5; The armature input of automatic switchover device 2, excitation input end are connected with the output of speed regulator 3a, 3b, and an armature output of automatic switchover device 2 is connected with the straightening group of motors 9a that several motor parallels are formed; The excitation input end of straightening motor unit 9a is connected with excitation fine setting 4a output, another armature output of automatic switchover device 2 is formed straightening motor unit 9b with several motor parallels and is connected, and the excitation input end of straightening motor unit 9b is connected with excitation fine setting 4b output; The given input of speed regulator 3a, 3b and being connected of Programmable Logic Controller 5 to set output terminal; An input of Programmable Logic Controller 5 is connected with the output of encoder 11a, another input of Programmable Logic Controller 5 is connected with the output of encoder 11b, three inputs of Programmable Logic Controller 5 respectively with master-control room 6, water steel operating room 7 and be connected with straightening operating room 8.Axle and encoder 11a, the 11b of motor 10,12 link together.
Master-control room 6, water steel operating room 7 and straightening operating room 8 and will need to operate run signal and deliver to Programmable Logic Controller 5, Programmable Logic Controller 5 passes to speed regulator 3a, 3b with this signal, speed regulator 3a, 3b start and pass the signal to automatic switchover device 2, and automatic switchover device 2 is sent to this signal respectively armature end and excitation fine setting 4a, the 4b of straightening motor unit 9a, 9b; With excitation finely tune 4a, 4b with the adjustment of field excitation of each motor of straightening motor unit good after, be transported to the excitation end of straightening motor unit 9a, 9b respectively, straightening motor unit 9a, 9b start.Motor 10,12 operations drive encoder 11a, 11b operation, and encoder 11a, 11b are sent to Programmable Logic Controller 5 with the pulling rate signal.Programmable Logic Controller 5 calculates the tracking signal of length, weight and the water distribution of strand automatically according to the pulling rate signal, be transported to the working condition of watering steel operating room 7, straightening operating room 8 and master-control room 6 surveillances, when producing just often, system so comes and goes and repeats said process.
Change the run signal of watering steel operating room 7, straightening operating room 8 and master-control room 6 according to the needs of production technology, pulling rate that can Adjustment System.As speed regulator 3a (or 3b) when breaking down, speed regulator 3a (or 3b) is out of service automatically.Send alarm signal simultaneously, standby speed regulator 1 starts automatically, and Programmable Logic Controller 5 turns to standby speed regulator 1 with given signal, and standby speed regulator 1 replaces speed regulator 3a (or 3b) work, and repeats said process.
Regulate excitation fine setting 4a, 4b, can adjust the excitation of any motor among straightening motor unit 9a, the 9b and regulate its rotating speed, to guarantee the synchronous operation of group of motors.
When system need overhaul, master-control room 6 switched to manual control signal with signal, does any selection by operating room, controlled one group of straightening motor unit 9a (or 9b) operation, or out of service, so that maintenance.
Claims (3)
1. automatic control system for straightening puller of steel billet, it is characterized in that: the armature of standby speed regulator (1) goes out end, the excitation output is gone into end with the armature of automatic switchover device (2) and is connected with excitation input end, and given input is connected to set output terminal with Programmable Logic Controller (5); The armature input of automatic switchover device (2), excitation input end are connected with the output of speed regulator (3a, 3b), an armature output of automatic switchover device (2) is connected with straightening motor unit (9a), the excitation input end of straightening motor unit (9a) is connected with excitation fine setting (4a) output, another armature output of automatic switchover device (2) is connected with straightening motor unit (9b), and the excitation input end of straightening motor unit (9b) is connected with excitation fine setting (4b) output; The given input of speed regulator (3a, 3b) is connected to set output terminal with Programmable Logic Controller (5); An input of Programmable Logic Controller (5) is connected with the output of encoder (11a), another input of Programmable Logic Controller (5) is connected with the output of encoder (11b), three inputs of Programmable Logic Controller (5) respectively with master-control room (6), water steel operating room (7) and be connected with straightening operating room (8).
2. automatic control system for straightening puller of steel billet according to claim 1 is characterized in that: the axle and the encoder (11a, 11b) of motor (10,12) link together.
3. automatic control system for straightening puller of steel billet according to claim 1 is characterized in that: the straightening motor unit that the straightening motor is formed for several motor parallels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991174798A CN1168559C (en) | 1999-12-23 | 1999-12-23 | Automatic control system for straightening puller of steel billet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991174798A CN1168559C (en) | 1999-12-23 | 1999-12-23 | Automatic control system for straightening puller of steel billet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1300650A CN1300650A (en) | 2001-06-27 |
| CN1168559C true CN1168559C (en) | 2004-09-29 |
Family
ID=5280101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB991174798A Expired - Fee Related CN1168559C (en) | 1999-12-23 | 1999-12-23 | Automatic control system for straightening puller of steel billet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1168559C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101332469B (en) * | 2007-06-28 | 2010-07-21 | 上海宝信软件股份有限公司 | Tension leveler control method |
| CN102085569B (en) * | 2009-12-08 | 2012-09-26 | 上海梅山钢铁股份有限公司 | Safety control device of brake of continuous casting withdrawing and straightening unit |
| CN109482834B (en) * | 2019-01-09 | 2021-02-19 | 山东钢铁股份有限公司 | Control method and system of continuous casting withdrawal and straightening machine |
-
1999
- 1999-12-23 CN CNB991174798A patent/CN1168559C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1300650A (en) | 2001-06-27 |
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