CN204985135U - Novel ladle lift synchro control device - Google Patents
Novel ladle lift synchro control device Download PDFInfo
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- CN204985135U CN204985135U CN201520564752.0U CN201520564752U CN204985135U CN 204985135 U CN204985135 U CN 204985135U CN 201520564752 U CN201520564752 U CN 201520564752U CN 204985135 U CN204985135 U CN 204985135U
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- ladle
- hydraulic cylinder
- proportional valve
- synchronous
- detecting device
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Abstract
The utility model provides a novel ladle lift synchro control device, is including a hydraulic pressure main pump that sets up four ladle hydraulic cylinder on the ladle, the position locking device who is connected with every ladle hydraulic cylinder respectively and proportional valve, is connected with four proportional valves, install the position detecting device on every ladle hydraulic cylinder, the synchronous electrical control device be connected with every position detecting device and proportional valve, the ladle promotes by four ladle hydraulic cylinder are synchronous, by its lifting position of proportional valve control, its position of position detecting device real -time detection, through the effective value of position detecting device feedback, the opening degree of corresponding proportional valve can independently be controlled in real time to synchronous electrical control device, and automatic control flows to ladle hydraulic cylinder's flow separately by the hydraulic pressure main pump through each proportional valve, and the assurance promotes the ladle in step, the utility model discloses a proportional valve single control hydraulic cylinder replaces four hydraulic cylinder's of current parallelly connected large -traffic synchronous motor control synchronous lift control function to reform transform the defect that exists among the prior art.
Description
Technical field
The utility model relates to molten steel vacuum melting technique field, is specifically related to a kind of novel ladle lifting sync control device.
Background technique
In existing molten steel vacuum melting technique, in order to reduce the turnaround time of ladle, improve the application of vacuum efficiency of molten steel, ladle lifting synchronous control system is applied to steel treatment link.Ladle is transported to steel treatment station along orbit by ladle trolley, by lowering or hoisting gear, ladle is promoted to separately the process height of technological requirement from ladle trolley, after molten steel application of vacuum terminates, ladle is transferred on the ladle trolley on orbit by lowering or hoisting gear, and ladle trolley transport ladle leaves steel treatment position and enters next process procedure.This ladle lifting form, because ladle promotes separately independent of ladle trolley, can participate in the work of other operations, thus decrease the turnaround time of ladle, improve the application of vacuum efficiency of molten steel during ladle trolley carries out steel treatment after ladle lifting.
At present, known ladle synchronous lifting control system is the synchronization motion that large discharge syncmotor controls with the lift frame of four lifting hydraulic cylinders.According to above-mentioned four lifting hydraulic cylinders to the synchronization control requirement of lift frame, the ladle lifting synchronous control system that tradition uses is shown in accompanying drawing 1.As shown in Figure 1, the flow of syncmotor device 4 mean allocation hydraulic pressure main pump 5, the flow through syncmotor device 4 is evenly distributed in four ladle lifting hydraulic cylinders 2, thus ensures the action of four ladle lifting hydraulic cylinder 2 Synchronous lifting ladles 1.The position of ladle lifting hydraulic cylinder 2 is positively locked in the position of technological requirement by position local device 3.In ladle lifting process, because each lifting hydraulic cylinder 2 lifting weight is large, speed is fast, so known syncmotor 4 adopts large discharge syncmotor to meet the applying working condition requirement of ladle lifting hydraulic cylinder 2 usually, therefore manufacture cost is expensive; In use simultaneously, if arbitrarily wherein a syncmotor 4 go wrong, then need integral replacing syncmotor 4, therefore maintenance workload is large, later stage spare part expense and operating cost is very high.
Novel ladle lifting sync control device of the present utility model has that reforming cost is low, installation difficulty is little, reliable, easy to maintenance, operating cost is low, can the advantage such as separate compensation synchronization error, Problems existing in the actual use of ladle lifting synchronous control system that the tradition as shown in Figure 1 that effectively can solve long-standing problem manufacturing enterprise uses.
Summary of the invention
In order to overcome above-mentioned prior art Problems existing, the purpose of this utility model is to provide a kind of novel ladle lifting sync control device, adoption rate valve controls separately the synchronization lifting function of four lifting hydraulic cylinders to the synchronization lifting controlling functions replacing known employing large discharge syncmotor in parallel to control four lifting hydraulic cylinders, to transform the defect existed in prior art.
In order to achieve the above object, the technical solution adopted in the utility model is as follows:
A kind of novel ladle lifting sync control device, comprises four the ladle lifting hydraulic cylinders 2 be arranged on ladle 1, the position local device 3 that is connected with each ladle lifting hydraulic cylinder 2 respectively and Proportional valve 6, a hydraulic pressure main pump 5 being connected with four Proportional valves 6; Be arranged on the position detecting device 7 on each ladle lifting hydraulic cylinder 2, the synchronous electric control equipment 8 connected with each position detecting device 7 and Proportional valve 6; The margin of error inter-sync that ladle 1 is allowed in technique by four ladle lifting hydraulic cylinders 2 promotes; The lifting position of each ladle lifting hydraulic cylinder 2 is controlled by Proportional valve 6; Each ladle lifting hydraulic cylinder 2 is provided with independent position detecting device 7, for detecting the position of ladle lifting hydraulic cylinder 2 in real time; By the actual value that position detecting device 7 feeds back, synchronous electric control equipment 8 can control the opening degree of corresponding Proportional valve 6 in real time independently, automatically control according to the position that ladle lifting hydraulic cylinder 2 needs the flow being flowed to respective ladle lifting hydraulic cylinder 2 by hydraulic pressure main pump 5 through each Proportional valve 6, thus ensure four ladle lifting hydraulic cylinder 2 Synchronous lifting ladles 1; Position local device 3 can by stable for ladle lifting hydraulic cylinder 2, to be locked in technological requirement reliably arbitrary position.
Described Proportional valve 6 adopts two four flow-through Proportional valves, the pressure oil port P of Proportional valve 6 is connected with the main hydraulic fluid port A of Proportional valve 6, the oil return inlet T of Proportional valve 6 is connected with the main hydraulic fluid port B of Proportional valve 6, the pressure oil port P of Proportional valve 6 is connected with oil hydraulic pump 5, and the main hydraulic fluid port B of Proportional valve 6 is connected with position local device 3.
In four ladle lifting hydraulic cylinder 2 synchronization lifting processes, when certain ladle lifting hydraulic cylinder speed exceedes the setting value of technological requirement more slowly or comparatively fast, synchronous electric control equipment 8 can according to position detecting device 7 Real-time Feedback on this corresponding ladle lifting hydraulic cylinder 2, strengthen or reduce the aperture of this corresponding Proportional valve 6, thus increase or reduce rising or the rate of descent of this ladle lifting hydraulic cylinder 2, make four ladle lifting hydraulic cylinder 2 synchronization motions.
In molten steel vacuum smelting process, when oil hydraulic cylinder inside or valve internal leakage appear in certain ladle lifting hydraulic cylinder 2 or position local device 3, and cause this ladle lifting hydraulic cylinder 2 to decline, when causing ladle 1 to tilt, the position of the corresponding real-time separate compensation ladle lifting hydraulic cylinder 2 of Proportional valve 6 energy.
Compared to the prior art comparatively, the utility model possesses following advantage:
1, the ladle used in tradition is elevated on the basis of synchronous control system, except large discharge syncmotor 4, keeps original ladle to be elevated each Placement of synchronous control system, each connecting pipeline is constant; Replace large discharge syncmotor 4 with Proportional valve 6, enormously simplify synchronizer.
2, mounting point detection device 7 on original lifting hydraulic cylinder 2; Newly increase synchronous electric control equipment 8; And the cable laid between link position detection device 7, synchronous electric control equipment 8 and Proportional valve 6.
Owing to employing above-mentioned technological scheme, compare to prior art, the utility model has following positive effect: the utility model overcomes the ladle lifting synchronous control system synchronous motion error that tradition uses and determined by the precision of syncmotor, and cannot the shortcoming of separate compensation; Separate between each Proportional valve, be convenient to maintenance, later stage spare part and operation cost low; Electric controling mode is simple, control accuracy is high, use the features such as reliable; Because this technological scheme is implemented on original basis, so this transformation is simple, installation difficulty is little; The various control overflow that hydraulic cylinder synchronous is run can be met widely.
Accompanying drawing explanation
Fig. 1 is traditional ladle lifting synchronous control system structural representation.
Fig. 2 is the utility model ladle lifting sync control device structural representation.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, the concrete structure of known traditional ladle lifting synchronous control system is:
The ladle 1 filling molten steel is risen to the process position of steel treatment technological requirement by four ladle lifting hydraulic cylinders 2, require four hydraulic cylinder synchronous work in the lifting process of ladle, ensure molten steel promote and processing procedure in safe and reliable; Position local device 3 can make ladle lifting hydraulic cylinder 2 be locked in arbitrary position safely and reliably; Respectively to the flow of each ladle lifting hydraulic cylinder 2 mean allocation from hydraulic pressure main pump 5 when large discharge syncmotor 4 works, make the flow entering ladle lifting hydraulic cylinder 2 equal, thus ensure four ladle lifting hydraulic cylinder synchronous workings.
The motor synchronous control gear be made up of large discharge syncmotor 4 controls four ladle lifting hydraulic cylinders 2 respectively, distributes the flow from hydraulic pressure main pump 5, thus ensure the forced synchronizing action of four ladle lifting hydraulic cylinders 2 for forcing.The net synchronization capability of four ladle lifting hydraulic cylinders 2 is decided by the performance of syncmotor, the error of the net synchronization capability of syncmotor is between 1%-3%, usually the oil hydraulic cylinder that this net synchronization capability causes under nonterminal service condition is asynchronous cannot separate compensation, and along with the prolongation of service time, net synchronization capability will decline.In use, any one syncmotor damage, then need change whole syncmotor, so rate of fault and maintenance cost high; Meanwhile, large discharge syncmotor is that non-standard equipment is expensive, and later stage spare part operating cost is very high.
As shown in Figure 2, in order to solve Problems existing in above-mentioned use, provide a kind of novel ladle lifting sync control device, specific embodiments is made up of two-part:
1, except large discharge syncmotor device 4, keep traditional ladle to be elevated all devices of synchronous control system and each equipment connection mode, hydraulic pipe line Connecting format etc. constant; Syncmotor 4 is replaced dexterously with conventional Proportional valve 6.Transformation is simple, and installation difficulty is little, and reforming cost is low.
2, on four ladle lifting hydraulic cylinders 2, separately a set of position detecting device 7 is installed, newly increases a set of synchronous electric control equipment 8, and interconnective cable with it.
Working procedure of the present utility model is as follows:
The margin of error inter-sync that ladle 1 is allowed in technique by four ladle lifting hydraulic cylinders 2 promotes; The lifting position of each ladle lifting hydraulic cylinder 2 is controlled by a set of conventional Proportional valve 6; Each ladle lifting hydraulic cylinder 2 is provided with independent position detecting device 7, for detecting the position of oil hydraulic cylinder 2 in real time; By often overlapping the actual value that position detecting device 7 feeds back, synchronous electric control equipment 8 can control the opening degree of corresponding Proportional valve 6 in real time independently, automatically control according to the position that oil hydraulic cylinder 2 needs the flow being flowed to respective ladle lifting hydraulic cylinder 2 by hydraulic pressure main pump 5 through each Proportional valve 6, thus ensure four ladle lifting hydraulic cylinder 2 Synchronous lifting ladles 1; Position local device 3 can by stable for lifting hydraulic cylinder 2, to be locked in technological requirement reliably arbitrary position.
In four ladle lifting hydraulic cylinder synchronization lifting processes, when some ladle lifting hydraulic cylinder 2 speed exceedes the setting value of technological requirement more slowly or comparatively fast, synchronous electric control equipment 8 can according to position detecting device 7 Real-time Feedback on this corresponding ladle lifting hydraulic cylinder 2, strengthen or reduce the aperture of this corresponding Proportional valve 6, thus increase or reduce rising or the rate of descent of this ladle lifting hydraulic cylinder 2, make four ladle lifting hydraulic cylinder 2 synchronization motions.
In molten steel vacuum smelting process, when oil hydraulic cylinder inside or valve internal leakage appear in certain ladle lifting hydraulic cylinder 2 or position local device 3, and cause this ladle lifting hydraulic cylinder 2 to decline, when causing ladle 1 to tilt, the position of the real-time separate compensation ladle lifting hydraulic cylinder 2 of Proportional valve 6 energy of this correspondence.Avoid occurring accident.
In the present invention, the pressure oil port P of Proportional valve 6 is connected with the main hydraulic fluid port A of Proportional valve 6, the oil return inlet T of Proportional valve 6 is connected with the main hydraulic fluid port B of Proportional valve 6, the large discharge Proportional valve latus rectum adopted by program native system can be reduced, thus greatly save investment, decrease later stage spare part running cost.
The utility model overcomes the ladle lifting synchronous control system synchronous motion error that tradition uses and is determined by the precision of syncmotor, and cannot the shortcoming of separate compensation; Separate between each Proportional valve, be convenient to maintenance, later stage spare part and operation cost low; Electric controling mode is simple, control accuracy is high, use the features such as reliable; Because this technological scheme is implemented on original basis, so this transformation is simple, installation difficulty is little; The various control overflow that hydraulic cylinder synchronous is run can be met widely.
More than exemplifying is only illustrate of the present utility model, does not form the restriction to protection domain of the present utility model, everyly all belongs within protection domain of the present utility model with the same or analogous design of the utility model.
Claims (2)
1. a novel ladle lifting sync control device, is characterized in that: comprise four the ladle lifting hydraulic cylinders (2) be arranged on ladle (1), the position local device (3) that is connected with each ladle lifting hydraulic cylinder (2) respectively and Proportional valve (6), a hydraulic pressure main pump (5) being connected with four Proportional valves (6); Be arranged on the position detecting device (7) on each ladle lifting hydraulic cylinder (2), the synchronous electric control equipment (8) connected with each position detecting device (7) and Proportional valve (6).
2. novel ladle lifting synchronous control system according to claim 1, it is characterized in that: Proportional valve (6) adopts two four flow-through Proportional valves, the pressure oil port (P) of Proportional valve (6) is connected with the main hydraulic fluid port (A) of Proportional valve (6), the return opening (T) of Proportional valve (6) is connected with the main hydraulic fluid port (B) of Proportional valve (6), the pressure oil port (P) of Proportional valve (6) is connected with oil hydraulic pump (5), and the main hydraulic fluid port (B) of Proportional valve (6) is connected with position local device (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520564752.0U CN204985135U (en) | 2015-07-30 | 2015-07-30 | Novel ladle lift synchro control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520564752.0U CN204985135U (en) | 2015-07-30 | 2015-07-30 | Novel ladle lift synchro control device |
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| Publication Number | Publication Date |
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| CN204985135U true CN204985135U (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520564752.0U Expired - Fee Related CN204985135U (en) | 2015-07-30 | 2015-07-30 | Novel ladle lift synchro control device |
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| CN (1) | CN204985135U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151127A (en) * | 2016-08-10 | 2016-11-23 | 武汉钢铁股份有限公司 | The double oil cylinder synchronous lift control method of flash trimmer and device |
-
2015
- 2015-07-30 CN CN201520564752.0U patent/CN204985135U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151127A (en) * | 2016-08-10 | 2016-11-23 | 武汉钢铁股份有限公司 | The double oil cylinder synchronous lift control method of flash trimmer and device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 Termination date: 20170730 |
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| CF01 | Termination of patent right due to non-payment of annual fee |