CN201648448U - Steel ladle jacking hydraulic system controlling steel ladle lifting speed through proportional pressure - Google Patents
Steel ladle jacking hydraulic system controlling steel ladle lifting speed through proportional pressure Download PDFInfo
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- CN201648448U CN201648448U CN2010201712161U CN201020171216U CN201648448U CN 201648448 U CN201648448 U CN 201648448U CN 2010201712161 U CN2010201712161 U CN 2010201712161U CN 201020171216 U CN201020171216 U CN 201020171216U CN 201648448 U CN201648448 U CN 201648448U
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- steel ladle
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Abstract
The utility model relates to a steel ladle jacking hydraulic system controlling the steel ladle lifting speed through proportional pressure and driving a steel ladle lifting device to go up and down. The steel ladle jacking hydraulic system includes a motor used for driving a hydraulic pump, a control pump used for providing hydraulic oil for transmission and control, and an oil tank used for storing the hydraulic oil, and the steel ladle jacking hydraulic system further includes a control piston used for driving and controlling the size and orientation of a main pump inner swash plate swinging angle, a guide regulator used for driving and controlling a piston, two one-way valves used for proving the hydraulic oil to a guide servo, a direction control valve used for controlling the action direction of the piston, and a proportional pressure valve used for controlling the action speed of the piston. The control pump is connected with the guide regulator and the control piston respectively through the two one-way valves, and the direction control valve and the proportional pressure valve are respectively connected with the control piston. The utility model can perform stepless control on output flow (delivery capacity) of the pump through the stepless regulated pressure output by the proportional pressure valve, so as to realize the high/low speed control on steel ladle lifting; and the utility model has the advantages of small impact, simple and reliable control, and relatively low investment.
Description
Technical field
The utility model belongs to metallurgy industry hydraulic efficiency system field, specifically relates to a kind of RH (vacuum outgas) ladle jacking hydraulic efficiency system of passing ratio pressure-controlling ladle rising or falling speed.
Background technology
In RH (vacuum outgas) refining was produced, the ladle that needs to be fully loaded with molten steel carried out the vacuum outgas processing from the ground jacking to certain altitude.As shown in Figure 1, RH jacking hydraulic efficiency system is for the ladle lifting provides hydrostatic transmission and control, comprises ladle 101, jacking framework 102, jacking hydro-cylinder 103 and ladle lifting hydraulic system 104.
At present, the mode of control RH ladle rising or falling speed mainly contains two kinds, i.e. pilot pressure mode and EO ratio mode.
As shown in Figure 2, the pilot pressure mode comprises ladle 101, jacking framework 102, jacking hydro-cylinder 103, low speed pressure regulator valve 105, high speed pressure variable valve 106 and solenoid operated directional valve 107.This mode mainly is made up of two pressure regulator valves (being respectively applied at a high speed and low speed) and a solenoid operated directional valve (being used for speed selects).Select high and low pressure that pump is carried out the size control of output flow (discharge capacity) by solenoid operated directional valve, thereby realize the height speed control of ladle lifting.
The advantage of this mode is: control simple and reliablely, invest relatively low.Shortcoming is: high and low and static speed step changes, and impacts bigger.
As shown in Figure 3, EO ratio mode comprises ladle 101, jacking framework 102, jacking hydro-cylinder 103, proportion directional valve 108, special-purpose external amplifier 109 and main pump angle sensor 110.This mode is mainly formed a closed loop control system by proportion directional valve, special-purpose external amplifier and main pump angle sensor.Proportional valve by band swash plate pivot angle feedback carries out the stepless control of output flow (discharge capacity) to main pump, thereby realizes the height speed control of ladle lifting.
The advantage of this mode is: can realize high and low and static speed linear change, impact little.Shortcoming is: electrical control system and debugging thereof are complicated, and some of them high precision and high response function are not suitable for the ladle elevating function, and investment is high.
In view of this, seeking a kind of control simple and reliable (not needing high precision and high response function), velocity variations impacts the RH ladle jacking hydraulic efficiency system of little passing ratio pressure-controlling ladle rising or falling speed and becomes pursuing one's goal of these those skilled in the art.
The utility model content
Task of the present utility model provides a kind of RH ladle jacking hydraulic efficiency system of passing ratio pressure-controlling ladle rising or falling speed, it has solved above-mentioned existing in prior technology problem, can reach control simple and reliable (not needing high precision and high response function), the little purpose of velocity variations impact.
Technical solution of the present utility model is as follows:
A kind of ladle jacking hydraulic efficiency system of passing ratio pressure-controlling ladle rising or falling speed, driving the ladle lifting device rises and descends, comprise the motor that is used to drive hydro-pump, provide transmission and control with the control pump of hydraulic efficiency oil and the fuel tank of stores hydraulic pressure oil, also comprise:
Drive and control the control piston of the size and Orientation of swash plate pivot angle in the main pump, drive and control guide's setter of control piston, two check valves that guide's servo-hydraulic oil is provided, the direction control valve of the direction of action of control main pump control piston, the proportional pressure valve of the responsiveness of control main pump control piston;
Described control pump connects guide's setter and control piston respectively by above-mentioned two check valves, and described direction control valve is connected control piston respectively with described proportional pressure valve.
When the ladle lifting device rose, described motor was as the work of electric motor mode and be in electric motor state; When the ladle lifting device descended, described motor was as the work of generator mode and be in engine condition.
The utility model is owing to adopted above technical scheme, make it compared with prior art, the pressure of the utility model passing ratio pressure valve output step-less adjustment carries out the stepless control of output flow (discharge capacity) to pump, thereby realize the height speed control of ladle lifting, have and to realize high and low and static speed linear change, impact for a short time, control simple and reliablely, invest relatively low advantage.
Description of drawings
Fig. 1 is the structural representation of the RH jacking hydraulic efficiency system of prior art.
Fig. 2 is the structural representation of the pilot pressure mode of prior art.
Fig. 3 is the structural representation of the EO ratio mode of prior art.
Fig. 4 is the structural representation of the RH ladle jacking hydraulic efficiency system of a kind of passing ratio pressure-controlling ladle rising or falling speed of the present utility model.
Reference numeral:
In the prior art: 101 is ladle, 102 are the jacking framework, 103 are the jacking hydro-cylinder, 104 is ladle lifting hydraulic system, and 105 is the low speed pressure regulator valve, and 106 is the high speed pressure variable valve, 107 is solenoid operated directional valve, 108 is the proportion directional valve, and 109 is special-purpose external amplifier, and 110 is the main pump angle sensor;
Among the utility model embodiment: 1 is motor, and 2 is control pump, and 3 is fuel tank, and 4 is check valve, and 5 is guide's setter, and 6 is control piston, and 7 is direction control valve, and 8 is proportional pressure valve.
Embodiment
Below in conjunction with drawings and Examples the utility model is elaborated.
Referring to Fig. 4, the utility model is a kind of RH ladle jacking hydraulic efficiency system of passing ratio pressure-controlling ladle rising or falling speed, be used to drive the ladle lifting device and rise and descend, it mainly is made up of motor 1, control pump 2, fuel tank 3, check valve 4, guide's setter 5, control piston 6, direction control valve 7 and proportional pressure valve 8.Control pump 2 connects guide's setter 5 and control piston 6 respectively by two check valves 4, and direction control valve 7 is connected control piston 6 respectively with proportional pressure valve 8.
Wherein, motor 1 is used to drive hydro-pump, when ladle rises, is in electric motor state; When ladle descends, be in the generator state.Control pump 2 provides transmission and control hydraulic efficiency oil, drives RH ladle lifting device and rises and descend.When ladle rose, control pump 2 was in the hydraulic pump works state; When ladle descended, control pump 2 was in the oil motor working order.Fuel tank 3 is used to store the hydraulic efficiency oil of RH ladle jacking hydraulic efficiency system, oil suction from here during hydraulic pump works.Check valve 4 is by this valve, provides guide's servo-hydraulic oil to the guide's setter 5 and the control piston 6 of control pump.Guide's setter 5 is used to drive and control the action of control piston 6.Control piston 6 is used to drive and control the size and Orientation of swash plate pivot angle in the control pump 2, thereby the flow outbound course and the size of control hydraulic control pump 2 finally realize ladle lifting direction and speed control.Direction control valve 7 is used to adjust the direction of action of the control piston 6 of control pump, realizes the control of ladle lifting direction.Proportional pressure valve 8 is used to adjust the movement range of the control piston 6 of control pump, realizes the control of ladle rising or falling speed.
In the practical application of steel mill, all passing ratio pressure valve 8 is exported the pressure of step-less adjustment, direction of action and amplitude to control pump 2 and guide's setter 5 and control piston 6 are carried out step-less adjustment, with the realization main pump is the stepless control of control pump 2 output flows, thereby realizes the height speed control of ladle lifting.
When the ladle lifting device rose, motor was as the work of electric motor mode and be in electric motor state.When the ladle lifting device descended, motor was as the work of generator mode and be in engine condition.Its control mode is that the pressure of passing ratio pressure valve output step-less adjustment carries out the stepless control of output flow (discharge capacity) to pump, thereby realizes the height speed control of ladle lifting.
In sum, the pressure of the utility model passing ratio pressure valve output step-less adjustment carries out the stepless control of output flow (discharge capacity) to pump, thereby realize the height speed control of ladle lifting, have and to realize high and low and static speed linear change, impact little, control simple and reliablely, invest relatively low advantage.
Certainly, those skilled in the art in the present technique field will be appreciated that, the foregoing description only is to be used for illustrating the utility model, and be not with opposing qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in the scope of the utility model claim the variation of the foregoing description, modification etc.
Claims (2)
1. the ladle jacking hydraulic efficiency system of a passing ratio pressure-controlling ladle rising or falling speed, driving the ladle lifting device rises and descends, comprise the motor that is used to drive hydro-pump, provide transmission and control, it is characterized in that, also comprise with the control pump of hydraulic efficiency oil and the fuel tank of stores hydraulic pressure oil:
Drive and control the control piston of the size and Orientation of swash plate pivot angle in the main pump, drive and control guide's setter of control piston, two check valves that guide's servo-hydraulic oil is provided, the direction control valve of the direction of action of control main pump control piston, the proportional pressure valve of the responsiveness of control main pump control piston;
Described control pump connects guide's setter and control piston respectively by above-mentioned two check valves, and described direction control valve is connected control piston respectively with described proportional pressure valve.
2. the ladle jacking hydraulic efficiency system of passing ratio pressure-controlling ladle rising or falling speed as claimed in claim 1 is characterized in that, when the ladle lifting device rose, described motor was as the work of electric motor mode and be in electric motor state; When the ladle lifting device descended, described motor was as the work of generator mode and be in engine condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201712161U CN201648448U (en) | 2010-04-23 | 2010-04-23 | Steel ladle jacking hydraulic system controlling steel ladle lifting speed through proportional pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201712161U CN201648448U (en) | 2010-04-23 | 2010-04-23 | Steel ladle jacking hydraulic system controlling steel ladle lifting speed through proportional pressure |
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| Publication Number | Publication Date |
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| CN201648448U true CN201648448U (en) | 2010-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201712161U Expired - Fee Related CN201648448U (en) | 2010-04-23 | 2010-04-23 | Steel ladle jacking hydraulic system controlling steel ladle lifting speed through proportional pressure |
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| CN (1) | CN201648448U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103171995A (en) * | 2011-12-20 | 2013-06-26 | 三一集团有限公司 | System for controlling descending speed of spreader and stacking machine |
| CN105020192A (en) * | 2015-07-30 | 2015-11-04 | 中国重型机械研究院股份公司 | Novel steel ladle lifting synchronous control system |
| CN106996400A (en) * | 2017-05-03 | 2017-08-01 | 中冶南方工程技术有限公司 | A kind of RH steel ladle jacking hydraulic systems of proportioning pump and proportional valve control |
| CN107986195A (en) * | 2017-12-27 | 2018-05-04 | 重庆平伟汽车科技股份有限公司 | A kind of hoistable platform |
| CN110747316A (en) * | 2019-10-22 | 2020-02-04 | 北京首钢自动化信息技术有限公司 | Automatic control lifting method for RH furnace vacuum treatment buggy ladle |
-
2010
- 2010-04-23 CN CN2010201712161U patent/CN201648448U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103171995A (en) * | 2011-12-20 | 2013-06-26 | 三一集团有限公司 | System for controlling descending speed of spreader and stacking machine |
| CN103171995B (en) * | 2011-12-20 | 2016-08-10 | 三一集团有限公司 | A kind of suspender decrease speed control system and stacker |
| CN105020192A (en) * | 2015-07-30 | 2015-11-04 | 中国重型机械研究院股份公司 | Novel steel ladle lifting synchronous control system |
| CN106996400A (en) * | 2017-05-03 | 2017-08-01 | 中冶南方工程技术有限公司 | A kind of RH steel ladle jacking hydraulic systems of proportioning pump and proportional valve control |
| CN106996400B (en) * | 2017-05-03 | 2019-06-07 | 中冶南方工程技术有限公司 | A kind of RH steel ladle jacking hydraulic system of proportioning pump and proportional valve control |
| CN107986195A (en) * | 2017-12-27 | 2018-05-04 | 重庆平伟汽车科技股份有限公司 | A kind of hoistable platform |
| CN107986195B (en) * | 2017-12-27 | 2019-10-25 | 重庆平伟汽车科技股份有限公司 | A kind of hoistable platform |
| CN110747316A (en) * | 2019-10-22 | 2020-02-04 | 北京首钢自动化信息技术有限公司 | Automatic control lifting method for RH furnace vacuum treatment buggy ladle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20180423 |