CN110576055A - steel rolling cold bed control system - Google Patents
steel rolling cold bed control system Download PDFInfo
- Publication number
- CN110576055A CN110576055A CN201911025203.5A CN201911025203A CN110576055A CN 110576055 A CN110576055 A CN 110576055A CN 201911025203 A CN201911025203 A CN 201911025203A CN 110576055 A CN110576055 A CN 110576055A
- Authority
- CN
- China
- Prior art keywords
- stepping motor
- cooling bed
- control system
- proximity switches
- steel rolling
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B43/00—Cooling beds, whether stationary or moving; Means specially associated with cooling beds, e.g. for braking work or for transferring it to or from the bed
- B21B43/04—Cooling beds comprising rolls or worms
Abstract
The invention discloses a steel rolling cooling bed control system which comprises a first stepping motor and a second stepping motor, wherein the first stepping motor and the second stepping motor are connected through a synchronous shaft, the synchronous shaft is connected with a plurality of groups of cooling bed long shafts arranged in parallel through a gear box, the cooling bed long shafts are provided with a group of proximity switches connected in parallel, the proximity switches are arranged at preset stop positions of the cooling bed long shafts, the proximity switches are connected with a control module, and the control module is used for closing the first stepping motor and the second stepping motor when the proximity switches are triggered. The application provides a steel rolling cooling bed control system, includes two symmetrical distribution's two step-by-step sections of cooling bed, when one of them goes wrong and need overhaul, another motor can also maintain its connected cooling bed normal operating.
Description
Technical Field
The invention relates to a steel rolling cooling bed control system.
Background
After the steel enters the cooling bed, the long shaft of the cooling bed drives the eccentric wheel, and each section is started, and is stopped immediately after going one step by an automatic control system, so that the purpose of stepping the cooling bed is achieved. When the braking stop angle position required by the cooling bed is reached, the PLC system automatically gives a stop signal, and the cooling bed synchronously stops. In actual operation, because the working condition is complex, the working temperature is high, and a problem occurs in one place, the whole equipment can be stopped, so that the hot shutdown time is caused, and the smooth production is influenced. It is difficult to ensure the smooth production.
Disclosure of Invention
In view of the above, the present application provides a control system for a steel rolling cooling bed, which includes two symmetrically distributed cooling bed step sections, and when one of the two cooling bed step sections has a problem and needs to be repaired, the other motor can also maintain the normal operation of the cooling bed connected to the other motor.
In order to solve the technical problems, the invention provides a steel rolling cooling bed control system, which comprises a first stepping motor and a second stepping motor, wherein the first stepping motor and the second stepping motor are connected through a synchronous shaft, the synchronous shaft is connected with a cooling bed long shaft group symmetrically arranged along the axis center of the synchronous shaft through a gear box, two cooling bed long shafts are provided with proximity switches connected in parallel, the proximity switches are arranged at preset stop positions of the cooling bed long shafts, the proximity switches are connected with a control module, and the control module is used for closing the first stepping motor and the second stepping motor when the proximity switches are triggered.
Preferably, the cooling bed long shaft group comprises a plurality of cooling bed long shafts parallel to the synchronizing shaft, and two cooling bed long shafts symmetrical along the axial center of the synchronizing shaft are mutually independent.
Preferably, the proximity switches are symmetrically arranged along the axial midpoint of the synchronizing shaft, the proximity switches are connected with the control module in parallel, and when one of the proximity switches is triggered, the first stepping motor and the second stepping motor are stopped.
Preferably, the first stepping motor and the second stepping motor are respectively arranged at two ends of the synchronizing shaft, and a clutch is respectively arranged between the synchronizing shaft and the first stepping motor and between the synchronizing shaft and the second stepping motor.
Preferably, a torque sensor is respectively arranged between the clutch and the first stepping motor, between the clutch and the second stepping motor, and between the clutch and the second stepping motor, a torque sensor is respectively arranged, and the torque sensors are connected with the clutches through a hydraulic control system.
Preferably, the hydraulic control system comprises a hydraulic driving device for driving the clutch, and a two-position three-way electromagnetic valve, wherein the two-position three-way electromagnetic valve is electrically connected with the clutch and the torque sensor.
preferably, a heat insulation plate is arranged between the gear box and the long shaft of the cooling bed, and heat insulation materials are filled in the heat insulation plate.
Compared with the prior art, the detailed description of the application is as follows:
The application discloses steel rolling cooling bed control system, including two sets of mutually independent cooling bed long axis groups, two synchronous machine pass through synchronous shaft drive cooling bed long axis group with the step motion of same speed, when one of them side is out of order, a step motor also can drive the cooling bed long axis group normal motion of its homonymy alone, can not appear because of the not enough problem of must all shutting down the maintenance of power.
Two proximity switches detect the cold bed major axis group of one side respectively, and when the proximity switch of one of them side was triggered, equipment stopped, consequently when one of them side got into when overhauing, the proximity switch of opposite side also can normal use, guarantees the normal use of unit.
Drawings
FIG. 1 is a schematic diagram of the present system;
fig. 2 is a schematic diagram of a connection relationship between the proximity switch and the control module in fig. 1.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
As shown in the figure, the application discloses a steel rolling cooling bed control system which can be used for controlling a driving mechanism of a cooling bed. The system comprises a first stepping motor 1 and a second stepping motor 2 which are symmetrically and coaxially arranged, wherein output shafts of the first stepping motor 1 and the second stepping motor 2 are oppositely arranged and are connected through a synchronous shaft 3. The two ends of the synchronizing shaft 3 are respectively connected with a cooling bed long shaft group through a gear box 4, and the cooling bed long shaft group comprises a plurality of cooling bed long shafts 5 which are arranged in parallel. The long shafts 5 of the cooling beds are symmetrically arranged along the central position of the axial direction of the synchronizing shaft 3. The long shafts 5 of the cooling bed on the two symmetrical sides are mutually independent. The output shafts of the first stepping motor 1 and the second stepping motor 2 are connected through a synchronizing shaft 3, so that the first stepping motor 1 and the second stepping motor 2 are driven at the same speed and keep synchronously driving the long shafts 5 of the cooling beds on both sides.
Proximity switches 8 are respectively arranged on the long shafts 5 of the cooling bed which are symmetrical on two sides, the proximity switches 8 are symmetrically arranged along the axial middle point of the synchronizing shaft 3, and the proximity switches 8 are connected with a control module 10 in parallel. The proximity switch 8 is arranged at a preset stop position of the long shaft 5 of the cooling bed, and when any one of the contact switches is triggered, the control system turns off the first stepping motor 1 and the second stepping motor 2. Therefore, even if one of the contact switches fails, the other contact switch can maintain the normal operation of the system.
The first stepping motor 1 and the second stepping motor 2 are respectively arranged at two ends of the synchronizing shaft 3, a clutch 7 is respectively arranged between the synchronizing shaft 3 and the first stepping motor 1 and between the synchronizing shaft 3 and the second stepping motor 2, and when the clutch 7 between one stepping motor and the synchronizing shaft 3 is disengaged, the other stepping motor can still drive the long shaft 5 of the cooling bed on the same side to normally operate.
A torque sensor 6 is respectively arranged between the first stepping motor 1, the second stepping motor 2 and the adjacent clutch 7, and the torque sensor 6 is connected with the clutch 7 through a hydraulic control system. The torque sensor 6 is used for detecting the torque transmitted between the stepping motor and the synchronous shaft 3, when the mechanism is stuck due to the operation failure of the mechanism, the torque is increased, and when the torque sensor 6 detects that the torque exceeds a set value, the close clutch 7 is disengaged through a hydraulic control system, so that the side with the failure is automatically stopped.
The hydraulic control system comprises a hydraulic driving device for driving the clutch 7 and a two-position three-way electromagnetic valve for pressure relief, the hydraulic driving device compresses the clutch 7 to enable the stepping motor to be connected with the synchronizing shaft 3 in a normal state, and when the torque exceeds a set value, the two-position three-way electromagnetic valve is de-energized and pressure relief is carried out to enable the clutch 7 to lose the compression effect of the hydraulic driving device, so that the synchronizing shaft 3 is driven to be disengaged from a cooling bed on one side with operation faults.
And a heat insulation plate 9 is arranged between the gear box 4 and the long shaft 5 of the cooling bed, and heat insulation materials are filled in the heat insulation plate 9. The synchronizing shaft 3 is made of 45 steel, and the heat resistance of the transmission shaft is improved through the following treatment process, so that the stability and the service life of the synchronizing shaft 3 on a cooling bed are improved:
Normalizing: heating the mixture in a furnace to 870 ℃ and 885 ℃ and preserving the heat for 1.5 to 2 hours; cooling in a furnace for 1 hour and then cooling in air to room temperature;
Quenching: carrying out high-frequency quenching on the outer surface of the transmission shaft, wherein the effective hardening layer depth is as follows: 4-5 mm.
Tempering: the transmission shaft is heated to 250 ℃ and 270 ℃, and the furnace is cooled to room temperature.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and these modifications and adaptations should be considered within the scope of the invention.
Claims (7)
1. The steel rolling cooling bed control system comprises a first stepping motor (1) and a second stepping motor (2), and is characterized in that the first stepping motor (1) and the second stepping motor (2) are connected through a synchronizing shaft (3), the synchronizing shaft (3) is connected with cooling bed long shaft groups symmetrically arranged along the axis center of the synchronizing shaft (3) through a gear box (4), two cooling bed long shafts (5) are provided with proximity switches (8) which are connected in parallel, the proximity switches (8) are arranged at preset stop positions of the cooling bed long shafts (5), the proximity switches (8) are connected with a control module (10), and the control module (10) is used for closing the first stepping motor (1) and the second stepping motor (2) when the proximity switches (8) are triggered.
2. A steel rolling cooling bed control system according to claim 1, characterized in that the cooling bed long shaft group comprises a plurality of cooling bed long shafts (5) parallel to the synchronizing shaft (3), and two cooling bed long shafts (5) symmetrical along the center of the synchronizing shaft (3) are independent.
3. A steel rolling cold bed control system according to claim 2, characterized in that the proximity switches (8) are symmetrically arranged along the axial midpoint of the synchronizing shaft (3), the proximity switches (8) are connected in parallel with the control module (10), and when one of the proximity switches (8) is triggered, the first stepping motor (1) and the second stepping motor (2) are stopped.
4. A steel rolling cold bed control system according to claim 1, characterized in that the first stepping motor (1) and the second stepping motor (2) are respectively arranged at two ends of the synchronizing shaft (3), and a clutch (7) is respectively arranged between the synchronizing shaft (3) and the first stepping motor (1) and the second stepping motor (2).
5. A steel rolling cooling bed control system according to claim 4, characterized in that a torque sensor (6) is respectively arranged between the clutch (7) and the first stepping motor (1), the second stepping motor (2) and the adjacent clutch (7), and the torque sensor (6) is connected with the clutch (7) through a hydraulic control system.
6. A steel rolling cold bed control system according to claim 4, characterized in that the hydraulic control system comprises a hydraulic drive for driving the clutch (7), and a two-position three-way solenoid valve electrically connecting the clutch (7) and the torque sensor (6).
7. A steel rolling cooling bed control system according to claim 1, characterized in that a heat insulation plate (9) is arranged between the gear box (4) and the cooling bed long shaft group, and the heat insulation plate (9) is filled with heat insulation materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911025203.5A CN110576055A (en) | 2019-10-25 | 2019-10-25 | steel rolling cold bed control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911025203.5A CN110576055A (en) | 2019-10-25 | 2019-10-25 | steel rolling cold bed control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110576055A true CN110576055A (en) | 2019-12-17 |
Family
ID=68815484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911025203.5A Pending CN110576055A (en) | 2019-10-25 | 2019-10-25 | steel rolling cold bed control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110576055A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59120314A (en) * | 1982-12-28 | 1984-07-11 | Sumitomo Heavy Ind Ltd | Chain conveyor type cooling bed |
| CN2068022U (en) * | 1989-12-27 | 1990-12-26 | 涟源钢铁厂 | Hydraulic driving combined cold bed |
| CN201198000Y (en) * | 2007-12-28 | 2009-02-25 | 鞍钢重型机械有限责任公司 | Cooling bed transmission gear |
| CN102699048A (en) * | 2012-05-31 | 2012-10-03 | 江阴大地装备股份有限公司 | Cooling bed rack stepping device |
| CN103920724A (en) * | 2014-04-25 | 2014-07-16 | 安徽马钢工程技术集团有限公司 | Billet turn-over cooling bed device |
| CN206794386U (en) * | 2017-05-31 | 2017-12-26 | 武钢集团昆明钢铁股份有限公司 | A kind of accurate arresting stop of walking beam cooler |
-
2019
- 2019-10-25 CN CN201911025203.5A patent/CN110576055A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59120314A (en) * | 1982-12-28 | 1984-07-11 | Sumitomo Heavy Ind Ltd | Chain conveyor type cooling bed |
| CN2068022U (en) * | 1989-12-27 | 1990-12-26 | 涟源钢铁厂 | Hydraulic driving combined cold bed |
| CN201198000Y (en) * | 2007-12-28 | 2009-02-25 | 鞍钢重型机械有限责任公司 | Cooling bed transmission gear |
| CN102699048A (en) * | 2012-05-31 | 2012-10-03 | 江阴大地装备股份有限公司 | Cooling bed rack stepping device |
| CN103920724A (en) * | 2014-04-25 | 2014-07-16 | 安徽马钢工程技术集团有限公司 | Billet turn-over cooling bed device |
| CN206794386U (en) * | 2017-05-31 | 2017-12-26 | 武钢集团昆明钢铁股份有限公司 | A kind of accurate arresting stop of walking beam cooler |
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Application publication date: 20191217 |