CN205064410U - Hydro -cylinder pressure control's frequency conversion hydraulic system - Google Patents
Hydro -cylinder pressure control's frequency conversion hydraulic system Download PDFInfo
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- CN205064410U CN205064410U CN201520717600.XU CN201520717600U CN205064410U CN 205064410 U CN205064410 U CN 205064410U CN 201520717600 U CN201520717600 U CN 201520717600U CN 205064410 U CN205064410 U CN 205064410U
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- pressure
- oil cylinder
- hydro
- control box
- hydraulic system
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Abstract
The utility model discloses a hydro -cylinder pressure control's frequency conversion hydraulic system, including control box, converter, motor, oil pump, controlling element, hydro -cylinder and measurement hydro -cylinder operating pressure's pressure sensor, controlling element package rubbing board formula ball valve and with the parallelly connected relief valve of board -like ball valve, pressure sensor's output with the control box links to each other. The utility model discloses a control box is adjusted thereby the frequency of converter control the rotational speed and then the regulation of motor the flow of oil pump, final injecing the operating pressure of hydro -cylinder, pressure sensor feeds back to the signal in real time the control box constitutes a closed loop control system, has realized the automatically regulated of pressure, has improved the stability of system.
Description
Technical field
The utility model relates to the hydraulic system that a kind of oil cylinder working-pressure controls, and particularly relates to the variable frequency hydraulic system that a kind of oil cylinder working-pressure controls.
Background technique
As the executive component of hydraulic system, there is directly impact on whether stablizing of its control to the reliability of system cloud gray model in oil cylinder.
Traditional oil cylinder working-pressure control system adopts metering pump and electro-hydraulic proportional valve, and stain resistance is low, and pressure degree of regulation is low, there is dead band, and oil pump is by peak rate of flow work, and system heating value is large.
As can be seen here, prior art awaits further improving.
Model utility content
The utility model is the deficiency avoiding above-mentioned prior art to exist, and provides the variable frequency hydraulic system that a kind of oil cylinder working-pressure controls, effectively improves the situation that system heating value is large, achieve the stepless voltage regulation of oil cylinder.
The technological scheme that the utility model adopts is:
The hydraulic system that oil cylinder working-pressure controls, comprises control box, frequency variator, motor, oil pump, control unit, oil cylinder and measures the pressure transducer of described cylinder efficient pressure; Described frequency variator is connection control case and motor respectively; The output terminal of described motor is connected with oil pump; Described oil pump is connected with oil cylinder with control unit by pipeline; Described pressure transducer is in parallel with oil cylinder port, and signal output part is connected with control box.
Described control unit comprises board-like ball valve and the safety valve in parallel with described board-like ball valve.
Described safety valve can the maximum pressure of restriction system, regulates the opening degree of described board-like ball valve can the working pressure of regulating system.
Owing to have employed technique scheme, useful effect that the utility model is acquired.
1, the utility model realizes stepless to pump group by frequency conversion, and inrush current is steady, impacts little, thus extend the life-span of motor and hydrovalve to electrical network.
2, utilize the relatively simple board-like ball valve of structure to regulate opening degree, change the flow of hydraulic system and the outlet pressure of system, improve the reliability of system.
3, employing pressure transducer is by signal feed back to control box, achieves oil pressure and automatically regulates, improve oil pressure stability.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Fig. 2 is hydraulic system principle figure of the present utility model.
Wherein, 1, control box 2, frequency variator 3, control unit 4, pressure transducer 5, oil cylinder 6, motor 7, oil pump 8, board-like ball valve 9, safety valve.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, this practicality is newly described in further detail, but the utility model is not limited to these embodiments.
As shown in Figure 1 to Figure 2, the hydraulic system that a kind of oil cylinder working-pressure controls, comprises control box 1, frequency variator 2, motor 6, oil pump 7, control unit 3, oil cylinder 5 and measures the pressure transducer 4 of described oil cylinder 5 working pressure; Described frequency variator 2 is connection control case 1 and motor 6 respectively; The output terminal of described motor 6 is connected with oil pump 7; Described oil pump 7 is connected with oil cylinder 5 with control unit 3 by pipeline; Described pressure transducer 4 is in parallel with the hydraulic fluid port of oil cylinder 5, and signal output part is connected with control box 1.
Described control unit 3 comprises board-like ball valve 8 and the safety valve 9 in parallel with described board-like ball valve 8.
Described safety valve 9 can the maximum pressure of restriction system, regulates the opening degree of described board-like ball valve 8 can the working pressure of regulating system.
Working principle of the present utility model can be briefly described below: the utility model regulates the frequency of described frequency variator 2 by described control box thus controls the rotating speed of described motor 6 and then regulate the flow of described oil pump 7, the working pressure of the described oil cylinder 5 of final restriction, signal Real-time Feedback is given described control box 1 by described pressure transducer 4, form a closed loop control system, achieve the automatic adjustment of pressure, improve the stability of system.
The part do not addressed in the utility model adopts or uses for reference prior art and can realize.
Employ the terms such as such as control box 1, frequency variator 2, motor 6 although more herein, do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present utility model more easily; The restriction that they are construed to any one additional is all contrary with the utility model spirit.
Need to further illustrate, specific embodiment described herein is only to spiritual example explanation of the present utility model.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Claims (3)
1. the variable frequency hydraulic system that controls of oil cylinder working-pressure, is characterized in that: comprise control box, frequency variator, motor, oil pump, control unit, oil cylinder and measure the pressure transducer of described cylinder efficient pressure; Described frequency variator is connection control case and motor respectively; The output terminal of described motor is connected with oil pump; Described oil pump is connected with oil cylinder with control unit by pipeline; Described pressure transducer is in parallel with oil cylinder port, and signal output part is connected with control box.
2. the variable frequency hydraulic system of a kind of oil cylinder working-pressure control according to claim 1, is characterized in that: described control unit comprises board-like ball valve and the safety valve in parallel with described board-like ball valve.
3. the variable frequency hydraulic system that controls of a kind of oil cylinder working-pressure according to claim 2, is characterized in that: described safety valve can the maximum pressure of restriction system, regulates the opening degree of described board-like ball valve can the working pressure of regulating system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520717600.XU CN205064410U (en) | 2015-09-17 | 2015-09-17 | Hydro -cylinder pressure control's frequency conversion hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520717600.XU CN205064410U (en) | 2015-09-17 | 2015-09-17 | Hydro -cylinder pressure control's frequency conversion hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205064410U true CN205064410U (en) | 2016-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520717600.XU Active CN205064410U (en) | 2015-09-17 | 2015-09-17 | Hydro -cylinder pressure control's frequency conversion hydraulic system |
Country Status (1)
| Country | Link |
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| CN (1) | CN205064410U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109159245A (en) * | 2018-10-10 | 2019-01-08 | 广西三威林产工业有限公司 | Slab precompressed machine control system |
| CN109927038A (en) * | 2016-11-22 | 2019-06-25 | 北京航空航天大学 | A kind of robot hydraulic-driven cradle head closed-loop control system |
-
2015
- 2015-09-17 CN CN201520717600.XU patent/CN205064410U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109927038A (en) * | 2016-11-22 | 2019-06-25 | 北京航空航天大学 | A kind of robot hydraulic-driven cradle head closed-loop control system |
| CN109159245A (en) * | 2018-10-10 | 2019-01-08 | 广西三威林产工业有限公司 | Slab precompressed machine control system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |