CN2866925Y - Hydraulic machinery real-time measuring and displaying device - Google Patents
Hydraulic machinery real-time measuring and displaying device Download PDFInfo
- Publication number
- CN2866925Y CN2866925Y CN 200620054716 CN200620054716U CN2866925Y CN 2866925 Y CN2866925 Y CN 2866925Y CN 200620054716 CN200620054716 CN 200620054716 CN 200620054716 U CN200620054716 U CN 200620054716U CN 2866925 Y CN2866925 Y CN 2866925Y
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- hydraulic machinery
- pressure
- oil cylinder
- computer
- signal
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Abstract
This utility relates to a hydraulic machinery real-time measurement and display device which can produce products with high quality, which consists of a control device, a monitor, an A/D converter, a D/A proportional amplifier, a proportional valve, a pressure transmitter and a hydro-cylinder which is characterized in that a number of inductance loops are arranged on the cylinder rod of the hydro-cylinder'and an electromagnetic sensor is disposed in the front-end of the hydraulic cylinder.
Description
Technical field
The utility model relates to a kind of measurement and display unit, and particularly a kind of hydraulic machinery is measured and display unit in real time.
Background technique
Hydraulic machinery equipment such as employed more advanced injection machine, die casting machine, oil hydraulic press are generally all wanted Control Parameter such as input speed, stroke, pressure in the industrial enterprise when work at present, and being provided with the quality of production product of these parameters is very important.Regrettably, after these parameters were set, in fact machine had the speed, stroke, the pressure that needing really not to obtain not to know when operation, and parameter is set can only be by rule of thumb, and manufacturing efficiency and quality of product still can not get effective assurance.A good control system should be: parameter is set--measurements--correction, and aforementioned process has only realized that parameter sets this step, is an open system.Present widely used hydraulic machinery equipment is not also measured--debugging functions.Thereby cause the quality of product of producing not high.
Summary of the invention
The purpose of this utility model is the not high problem of the quality of product of producing that exists in the existing hydraulic machinery in order to solve, and provides a kind of hydraulic machinery of producing high quality of products to measure in real time and display unit.
Technological scheme:
The purpose of this utility model is achieved in that a kind of hydraulic machinery measurement and display unit in real time, comprise controller, display device, A/D converter, D/A proportional amplifier, Proportional valve, pressure transmitter and oil cylinder, the piston rod that it is characterized in that oil cylinder is provided with some inductance loops, is fixed with electromagnetic inductor or adds tooth bar with encoder at the oil cylinder front end and measure.During use, electromagnetic inductor or with encoder the signal of sensing is delivered to controller after, controller judges that according to this signal speed, position, the pressure of piston rod measures and the parameter of each executive component is adjusted.
Beneficial effect:
Owing to adopted technological scheme described in the utility model, hydraulic machinery forms parameter and sets--measurement--closed loop control system of correction in use, has improved its control accuracy, thereby the quality of its product of producing is improved.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is an embodiment's of hydraulic machinery described in the utility model measurement in real time and display unit a control block diagram.
Fig. 2 is the relative position schematic representation of oil cylinder and piston and electromagnetic inductor among Fig. 1 embodiment.
Embodiment:
See Fig. 1, described hydraulic machinery is measured and display unit in real time, comprise man-machine interface (touch screen or display screen), computer (PLC or process control machine), analog-digital converter, digital to analog converter, pressure transmitter, displacement measurement unit (encoder, electromagnetic inductor or electronic ruler), the D/A proportional amplifier plate, Proportional valve (or servovalve) and corresponding program and oil cylinder shown in Figure 2, the D/A proportional amplifier also can adopt general D/A converter to add general proportional amplifier plate and realize, see Fig. 2, the piston rod 2 of oil cylinder 1 is provided with some inductance loops 21, is fixed with electromagnetic inductor 3 at oil cylinder 1 front end.Can adopt two computers on die casting machine, one is mainly used in control, and another is mainly used in measurement.
Display applications (is example with the touch screen):
The most handy touch screen of display device can show data, curve, the form of sending here on the one hand after computer is handled, also can import data, parameter simultaneously to computer, and when using liquid crystal display panel, also handy keyboard carries out the parameter input.
1, input parameter
2, display speed, stroke, pressure diagram
3, storage data
The computer purposes:
Detection speed, stroke, pressure signal also carry out corresponding computing, processing, storage.
The purposes of digital to analog converter:
Convert the digital quantity of programming controller to analog amount for Proportional valve usefulness.
The purposes of analog-digital converter:
The analog signal conversion that pressure transmitter and electronic ruler are produced becomes digital signal to supply with computer.
The purposes of pressure transmitter:
Hydraulic pressure is converted to electric analoging signal.
The displacement measurement unit:
Electromagnetic inductor produces pulse signal and gives computer, and electronic ruler produces voltage analog signal.Also can realize the measurement of displacement amount with the gear of a rack drives that links to each other with piston rod one encoder, the gear rotation on the rack drives encoder, encoder produces corresponding pulse according to the shift motion and the speed of tooth bar.
Proportional amplifier plate:
Amplifying plate by the computer control ratio, amplify plate and remove the control ratio valve again. computer control ratio valve has two kinds of modes
1, the digital signal of computer output becomes analogue signal through D/A converter and inputs to proportional amplifier plate.
2, the digital signal of computer output directly inputs to the proportional amplifier plate (D/A proportional amplifier plate) of a band digital to analog converter, uses it and can save a digital to analog converter (the present price of FX2N-2DA digital to analog converter approximately is 1300 yuan).This is a proportional amplifier plate that I manufacture and design, model D/A168, it is made of two-part, first portion is the D/A conversion, it receives 2 road BCD code signals of 16 output points of PLC, convert the input signal of 2 tunnel (one road pilot pressure, one tunnel control flow rate) 0-5v analogue signal to as proportional amplifier plate.Second portion is general proportional amplifier plate.
The purposes of Proportional valve:
The pressure of controlled hydraulic system, flow.
Control procedure
When injection machine injection oil cylinder or die casting machine injection oil cylinder or the work of oil hydraulic press pressure cylinder, pressure transmitter is passed to computer with pressure signal, encoder or electromagnetic inductor are also passed to computer with signal simultaneously, computer will be noted total data, simultaneously speed, displacement, pressure and setting value are compared, revise deviation.Screen is with display speed, displacement, 3 curves of pressure after treatment.
By touch screen Operational Limits is inputed to computer, computer carries out computing with these parameters and from the measured signal of encoder or electromagnetic inductor, pressure transducer, and the rapid adjustment hydraulic proportion valve makes it reach default value.Proportional valve is as executive component, pilot pressure and flow.Flow converts the speed of piston to through oil cylinder, tooth bar is fixed on the piston, the mobile drive encoder gear rotation of tooth bar, send with the corresponding pulse of speed and input to computer as speed, displacement signal, pressure in the oil cylinder is given computer by pressure transmitter through D/A converter, computer is exported control signal and is given the D/A proportional amplifier plate after computing, proportional amplifier plate goes the pressure and the flow output of resize ratio valve.Display device shows pressure, displacement and speed.
The rotation of rack drives encoder, encoder produces corresponding pulse according to the shift motion and the speed of tooth bar.
Done the electromagnetic induction ring on the piston rod, when piston moved, the electromagnetic induction receiver just detects shift motion and speed produces corresponding pulse signal.
Claims (1)
1, a kind of hydraulic machinery is measured and display unit in real time, comprise controller, display device, A/D converter, D/A proportional amplifier, Proportional valve, pressure transmitter and oil cylinder, the piston rod that it is characterized in that oil cylinder is provided with some inductance loops, is fixed with electromagnetic inductor at the oil cylinder front end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620054716 CN2866925Y (en) | 2006-01-26 | 2006-01-26 | Hydraulic machinery real-time measuring and displaying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620054716 CN2866925Y (en) | 2006-01-26 | 2006-01-26 | Hydraulic machinery real-time measuring and displaying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2866925Y true CN2866925Y (en) | 2007-02-07 |
Family
ID=37702630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620054716 Expired - Fee Related CN2866925Y (en) | 2006-01-26 | 2006-01-26 | Hydraulic machinery real-time measuring and displaying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2866925Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865181A (en) * | 2010-06-29 | 2010-10-20 | 中国传媒大学 | Automatic diagnostic system of hydraulic system applied to stage driving |
| CN106678126A (en) * | 2015-11-05 | 2017-05-17 | 常州工学院 | Precisely-located numerical control cylinder and control method thereof |
-
2006
- 2006-01-26 CN CN 200620054716 patent/CN2866925Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865181A (en) * | 2010-06-29 | 2010-10-20 | 中国传媒大学 | Automatic diagnostic system of hydraulic system applied to stage driving |
| CN101865181B (en) * | 2010-06-29 | 2012-09-26 | 中国传媒大学 | Automatic diagnostic system of hydraulic system applied to stage driving |
| CN106678126A (en) * | 2015-11-05 | 2017-05-17 | 常州工学院 | Precisely-located numerical control cylinder and control method thereof |
| CN106678126B (en) * | 2015-11-05 | 2018-05-18 | 常州工学院 | One kind can pinpoint numerical control oil cylinder and its control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070207 Termination date: 20100228 |