CN204003680U - Novel master cylinder hydraulic circuit system - Google Patents
Novel master cylinder hydraulic circuit system Download PDFInfo
- Publication number
- CN204003680U CN204003680U CN201420396179.2U CN201420396179U CN204003680U CN 204003680 U CN204003680 U CN 204003680U CN 201420396179 U CN201420396179 U CN 201420396179U CN 204003680 U CN204003680 U CN 204003680U
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- CN
- China
- Prior art keywords
- master cylinder
- reversing valve
- proportional reversing
- pump
- rodless cavity
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model discloses a kind of novel master cylinder hydraulic circuit system, comprise fuel tank, pump, the metering pump that pump adopts synchronous servo motor to control, pump is connected with proportional reversing valve, the return opening of proportional reversing valve communicates with fuel tank, the right position of proportional reversing valve communicates with the rodless cavity of master cylinder, and the left position of proportional reversing valve communicates with the rod chamber of master cylinder by relief valve; On the rodless cavity of master cylinder, rod chamber, pressure transducer is all set, separately be provided with the grating scale of perception master cylinder piston position signal, described pressure transducer, grating scale are all connected with PLC controller, and PLC controller is connected with the driver of proportional reversing valve work with control synchronous servo motor; The rodless cavity of master cylinder is connected with oil feeding reservoir by Pilot operated check valve.The utility model is rational in infrastructure, energy-conservation, favorable working performance.
Description
Technical field
The utility model relates to a kind of master cylinder hydraulic pressure circuit system.
Background technique
The overshoot of hydraulic position and pressure is to cause one of principal element that operating accuracy is inadequate.Overshoot is often because the response lag of Detecting element (as pressure transducer, displacement transducer), selector valve etc., reaching life period interval between setting value and fuel cut-off, oil hydraulic pump has unnecessary hydraulic oil to flow out, unnecessary hydraulic oil enters master cylinder, inevitable build-up of pressure overshoot or position overshoot.And piston rod deadweight is very large, under effect of inertia, be difficult to stop immediately, be also one of factor causing overshoot.
In the hydraulic equipment of electric power system, also there is the problem that needs pressure fine adjustment.
Summary of the invention
That the purpose of this utility model is to provide is a kind of rational in infrastructure, energy-conservation, the master cylinder hydraulic pressure circuit system of favorable working performance.
Technical solution of the present utility model is:
A kind of master cylinder hydraulic pressure circuit system, comprise fuel tank, pump, it is characterized in that: the metering pump that pump adopts synchronous servo motor to control, pump is connected with proportional reversing valve, the return opening of proportional reversing valve communicates with fuel tank, the right position of proportional reversing valve communicates with the rodless cavity of master cylinder, and the left position of proportional reversing valve communicates with the rod chamber of master cylinder by relief valve; On the rodless cavity of master cylinder, rod chamber, pressure transducer is all set, separately be provided with the grating scale of perception master cylinder piston position signal, described pressure transducer, grating scale are all connected with PLC controller, and PLC controller is connected with the driver of proportional reversing valve work with control synchronous servo motor; The rodless cavity of master cylinder is connected with oil feeding reservoir by Pilot operated check valve.
The utility model is rational in infrastructure, energy-conservation, favorable working performance; Applicable to occasions such as powder compacting equipment, power equipments.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 is an embodiment's of the utility model structural representation.
Embodiment
A kind of novel master cylinder hydraulic circuit system, as shown in Figure 1, comprise fuel tank 4, pump 5, the metering pump that pump adopts synchronous servo motor 3 to control, pump is connected with proportional reversing valve 6, the return opening of proportional reversing valve communicates with fuel tank 4, and the right position of proportional reversing valve communicates with the rodless cavity of master cylinder 12, and the left position of proportional reversing valve communicates with the rod chamber of master cylinder by relief valve 7; On the rodless cavity of master cylinder, rod chamber, pressure transducer 11,13 is set respectively, separately be provided with the grating scale 14 of perception master cylinder piston position signal, described pressure transducer 11,13, grating scale 14 are all connected with PLC controller 1, and PLC controller is connected with the driver 2 of proportional reversing valve 6 work with control synchronous servo motor 3; The rodless cavity of master cylinder is connected with oil feeding reservoir 10 by Pilot operated check valve 9.Separately being provided with accumulator 8 communicates with the rod chamber of master cylinder.
When quick, when descending, pump 5 output flows enter the rodless cavity of master cylinder 12, descent of piston by the right position of selector valve 6.Because forming negative pressure, rodless cavity cause Pilot operated check valve 9 to be opened, 10 pairs of rodless cavity repairings of oil feeding reservoir simultaneously.When rod chamber pressure is greater than equilibrium valve 7 setting value, fluid is got back to fuel tank through equilibrium valve 7 by selector valve 6.When descending at a slow speed, grating scale 14 gathers the position signal of piston rod in real time, and sends PLC controller 1 to, then makes accordingly corresponding action by driver 2.The downstream position of piston is set to desired value, and when piston continues descendingly while reaching surely pre-position, PLC controller 1 sends and refers to the modern rotating speed that changes actuating motor 3, thereby the output flow of pump is diminished realize descending at a slow speed.The fluctuation that changes in flow rate causes is absorbed by accumulator 8.When pressurize, according to the position signal of the feedback signal of pressure transducer 11,13 and grating scale feedback, PLC controller 1 sends immediately signal and makes selector valve 6 meta access loops.Meanwhile, PLC controller 1 sends signal actuating motor is stopped operating.Overshoot when accumulator 8 energy compensating piston bars stop.When wanting quick return, PLC controller 1 sends signal and makes access loop, the right position of selector valve 6, and master cylinder is in backhaul state.
Native system is used grating scale 14 Real-time Feedback piston rod position, compares other general position limit switches just using, and has speed of response faster.And the accumulator 8 being connected with master cylinder rod chamber can effectively be inhaled pressure and the unnecessary hydraulic oil of storage compartment excessive while impacting, reduce overshoot.It is slow lower while stopping predetermined value that the position signal that feeds back to PLC controller 1 when grating scale 14 reaches, PLC controller 1 sends signal immediately stops actuating motor 3 by driver 2, the rate of discharge of pump 5 is zero, while PLC controller 1 sends signal makes selector valve 6 metas access fast loop, and master cylinder is realized pressurize.And main cylinder piston-rod is due to hysteresis and the effect of inertia of system responses, can not stop immediately, from face, form overshoot.The utility model, by being arranged on the compression shock of accumulator 8 absorption systems of master cylinder rod chamber oil circuit, can effectively reduce piston rod pressurize position overshoot.
Claims (1)
1. a novel master cylinder hydraulic circuit system, comprise fuel tank, pump, it is characterized in that: the metering pump that pump adopts synchronous servo motor to control, pump is connected with proportional reversing valve, the return opening of proportional reversing valve communicates with fuel tank, the right position of proportional reversing valve communicates with the rodless cavity of master cylinder, and the left position of proportional reversing valve communicates with the rod chamber of master cylinder by relief valve; On the rodless cavity of master cylinder, rod chamber, pressure transducer is all set, separately be provided with the grating scale of perception master cylinder piston position signal, described pressure transducer, grating scale are all connected with PLC controller, and PLC controller is connected with the driver of proportional reversing valve work with control synchronous servo motor; The rodless cavity of master cylinder is connected with oil feeding reservoir by Pilot operated check valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420396179.2U CN204003680U (en) | 2014-07-18 | 2014-07-18 | Novel master cylinder hydraulic circuit system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420396179.2U CN204003680U (en) | 2014-07-18 | 2014-07-18 | Novel master cylinder hydraulic circuit system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204003680U true CN204003680U (en) | 2014-12-10 |
Family
ID=52043687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420396179.2U Expired - Fee Related CN204003680U (en) | 2014-07-18 | 2014-07-18 | Novel master cylinder hydraulic circuit system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204003680U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106121508A (en) * | 2016-06-24 | 2016-11-16 | 三重型能源装备有限公司 | Locking method, locking device, top drive apparatus and rig for revolving meber |
| CN108437509A (en) * | 2018-04-09 | 2018-08-24 | 青岛元汇丰企业管理咨询服务有限公司 | A kind of energy-saving and noise-reducing forcing press |
| CN108570991A (en) * | 2017-03-10 | 2018-09-25 | 上海先为土木工程有限公司 | One kind is from pressurize building-supporting device and from pressurize building-supporting system |
-
2014
- 2014-07-18 CN CN201420396179.2U patent/CN204003680U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106121508A (en) * | 2016-06-24 | 2016-11-16 | 三重型能源装备有限公司 | Locking method, locking device, top drive apparatus and rig for revolving meber |
| CN106121508B (en) * | 2016-06-24 | 2019-11-26 | 三一重型能源装备有限公司 | For the locking method of revolving meber, locking device, top drive apparatus and drilling machine |
| CN108570991A (en) * | 2017-03-10 | 2018-09-25 | 上海先为土木工程有限公司 | One kind is from pressurize building-supporting device and from pressurize building-supporting system |
| CN108570991B (en) * | 2017-03-10 | 2024-04-19 | 上海先为土木工程有限公司 | Self-pressure-maintaining building supporting device and self-pressure-maintaining building supporting system |
| CN108437509A (en) * | 2018-04-09 | 2018-08-24 | 青岛元汇丰企业管理咨询服务有限公司 | A kind of energy-saving and noise-reducing forcing press |
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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 |
Granted publication date: 20141210 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |