CN201236906Y - Liquid-viscous stepless governor based on variable frequency control - Google Patents
Liquid-viscous stepless governor based on variable frequency control Download PDFInfo
- Publication number
- CN201236906Y CN201236906Y CNU2008201332201U CN200820133220U CN201236906Y CN 201236906 Y CN201236906 Y CN 201236906Y CN U2008201332201 U CNU2008201332201 U CN U2008201332201U CN 200820133220 U CN200820133220 U CN 200820133220U CN 201236906 Y CN201236906 Y CN 201236906Y
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- control
- motor
- pump
- variable
- frequency
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Abstract
The utility model discloses a fluid viscous stepless speed regulator based on variable frequency control. The fluid viscous stepless speed regulator comprises a hydraulic control system and a lubricating system, wherein the hydraulic control system comprises a control pump, the control pump is connected with a control motor, the lubricating system comprises a lubrication pump, the lubrication pump is connected with a lubrication motor, the control motor and the lubrication motor are all variable-frequency motors connected with frequency converters. Stable loading is realized through variable-frequency regulation and control of the pump capacity and change and control of the pressure. The towing torque of the friction disk is gradually increased through the variable-frequency regulation of the flow of the lubrication pump, to realize stable low-speed starting. The soft start and the speed regulation stability of the fluid viscous stepless speed regulator can be ensured. The loading range is wide, the loading torque is controllable, and the speed rise is steady.
Description
Technical field
The utility model relates to a kind of stepless speed-regulating device, relates in particular to a kind of stepless speed-regulating device that relies on liquid viscosity shear transfer moment.
Background technique
The sticking stepless speed-regulating device of liquid is the stepless speed regulation controllable start device that relies on liquid viscosity shear transfer moment, adjusts the size of institute's carry-over moment by the oil pressure of control hydraulic control circuit, realizes stepless speed regulation.
Liquid of the prior art glues stepless speed-regulating device, and hydraulic control circuit is provided with electricity liquid ratio relief valve and safety valve.During the work of liquid viscosity stepless speed-regulating device, the pressure setting of safety valve is on suitable pilot pressure, the pressure of assurance system is no more than setting value, the oil pressure of hydraulic control circuit is controlled by electricity liquid ratio relief valve, when the control electric current of electricity liquid ratio relief valve increases, oil pressure raises, and carry-over moment increases; When electric current reduced, oil pressure reduced, and carry-over moment reduces.
There is following shortcoming at least in above-mentioned prior art:
Clamping stagnation takes place and causes speed governing malfunctioning in electro-hydraulic proportional valve easily, the speed adjusting performance instability.
Summary of the invention
The purpose of this utility model provides the stable sticking stepless speed-regulating device of the liquid based on VFC of a kind of speed adjusting performance.
The purpose of this utility model is achieved through the following technical solutions:
The sticking stepless speed-regulating device of liquid based on VFC of the present utility model, comprise hydraulic control system, described hydraulic control system comprises control pump, and described control pump is connected with the control motor, described control motor is a variable-frequency motor, and described variable-frequency motor is connected with frequency variator.
The technological scheme that is provided by above-mentioned the utility model as can be seen, the sticking stepless speed-regulating device of liquid based on VFC described in the utility model, because the control motor that the control pump of hydraulic control system connects is a variable-frequency motor, variable-frequency motor is connected with frequency variator, and speed adjusting performance is stable.
Description of drawings
Fig. 1 is the structural representation of the utility model based on the concrete enforcement of the sticking stepless speed-regulating device of liquid of VFC.
Among the figure: 1. lubricant pump, 2. lubrication motor, 3. big flow one-way valve, 4. pressure gauge, 5. temperature transducer, 6. control pump, 7. control motor, 8. smart oil purifier, 9. pressure transducer, 10. series flow control valve, 11. safety valves, 12. thick oil purifiers.
Embodiment
The sticking stepless speed-regulating device of liquid based on VFC of the present utility model, utilize the viscosity of liquid and the shearing force of oil film to come transferring power, it is connected with tested prime mover, can realize empty load of motor starting, steady controlled loading, thereby reach the purpose of slow start or speed governing.
Its preferable embodiment as shown in Figure 1, comprise hydraulic control system, lubrication system, wherein the effect of lubrication system is to force to cool off the heat that produces between friction plate when loading to prime mover, can also progressively increase friction plate band row moment of torsion by the flow of regulating lubrication system, thereby realize the low speed smooth starting; Hydraulic control system is then carried out the adjustment in friction plate gap, thereby changes oil slick thickness, makes output torque change as required.
Hydraulic control system comprises control pump 6, and control pump 6 is connected with control motor 7, and control motor 7 is a variable-frequency motor, is connected with frequency variator.Flow by variable frequency adjustment control pump 6 changes pilot pressure, realizes steadily loading.
Lubrication system comprises lubricant pump 1, and lubricant pump 1 is connected with lubrication motor 2, and lubrication motor 2 also can be variable-frequency motor, is connected with frequency variator.Progressively increase friction plate band row moment of torsion by variable frequency adjustment lubricant pump flow, thereby realize the low speed smooth starting.
Hydraulic control system also is provided with series flow control valve 10, and series flow control valve 10 can be used for preventing carrying out when VFC from breaking down manual tune, also can unite with VFC and regulate.The rotating speed that changes variable-frequency motor can change the oily flow Q of control
k, oily flow Q
kOn series flow control valve 10 and other leakage point, form pressure drop P
c, the variation of flow can cause P
cVariation, reach the purpose of regulating the control oil pressure.Series flow control valve 10 can be located on the export pipeline of control pump 6, regulates the flow of oil-feed.Hydraulic control system can also be provided with safety valve 11, and safety valve 11 is located between the export pipeline and fuel tank of control pump 6, is used for limiting the maximum pressure of control system.Series flow control valve 10 also can be connected in parallel with safety valve 11, by regulating the oil return flow, realizes the adjusting to hydraulic control system oil-feed flow.
The utility model adopts variable-frequency motor to control pump motor in the hydraulic system and lubricant pump motor, changes pilot pressure by variable frequency adjustment control pump flow, realizes steadily loading.Progressively increase friction plate band row moment of torsion by variable frequency adjustment lubricant pump flow, thereby realize the low speed smooth starting.Guarantee the soft start and the speed governing stationarity of liquid viscosity stepless speed-regulating device.Load wide ranges, loading torque is controlled, and speed rises steadily, is applicable to the variable speed energy saving of the soft start of machineries such as motor, automobile, internal-combustion engine, water turbine, engineering machinery, forestry, mine, petroleum drilling and mining and blower fan water pump etc.
The above; it only is the preferable embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.
Claims (5)
1, the sticking stepless speed-regulating device of a kind of liquid based on VFC comprises hydraulic control system, and described hydraulic control system comprises control pump, described control pump is connected with the control motor, it is characterized in that described control motor is a variable-frequency motor, described variable-frequency motor is connected with frequency variator.
2, the sticking stepless speed-regulating device of the liquid based on VFC according to claim 1 is characterized in that described hydraulic control system is provided with series flow control valve.
3, the sticking stepless speed-regulating device of the liquid based on VFC according to claim 2 is characterized in that be provided with safety valve between the export pipeline of described control pump and the fuel tank, described series flow control valve and described safety valve are connected in parallel.
4, the sticking stepless speed-regulating device of the liquid based on VFC according to claim 2 is characterized in that described series flow control valve is located on the export pipeline of described control pump.
5, the sticking stepless speed-regulating device of the liquid based on VFC according to claim 1, it is characterized in that, also comprise lubrication system, described lubrication system comprises lubricant pump, described lubricant pump is connected with lubrication motor, described lubrication motor is a variable-frequency motor, and described variable-frequency motor is connected with frequency variator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201332201U CN201236906Y (en) | 2008-04-25 | 2008-08-22 | Liquid-viscous stepless governor based on variable frequency control |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820080178.1 | 2008-04-25 | ||
| CN200820080178 | 2008-04-25 | ||
| CNU2008201332201U CN201236906Y (en) | 2008-04-25 | 2008-08-22 | Liquid-viscous stepless governor based on variable frequency control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201236906Y true CN201236906Y (en) | 2009-05-13 |
Family
ID=40649646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201332201U Expired - Lifetime CN201236906Y (en) | 2008-04-25 | 2008-08-22 | Liquid-viscous stepless governor based on variable frequency control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201236906Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629267A (en) * | 2013-11-26 | 2014-03-12 | 江苏大学 | Energy-saving hydraulic system of liquid viscosity speed regulation clutch |
-
2008
- 2008-08-22 CN CNU2008201332201U patent/CN201236906Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629267A (en) * | 2013-11-26 | 2014-03-12 | 江苏大学 | Energy-saving hydraulic system of liquid viscosity speed regulation clutch |
| CN103629267B (en) * | 2013-11-26 | 2015-12-09 | 江苏大学 | A kind of hydro-viscous speed governing clutch energy-saving hydraulic system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Tai'an Libo Mechanical Technology Co., Ltd. Assignor: Zhou Manshan Contract fulfillment period: 2009.3.1 to 2015.2.28 Contract record no.: 2009370000016 Denomination of utility model: Liquid-viscous stepless governor based on variable frequency control Granted publication date: 20090513 License type: Exclusive license Record date: 20090313 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.3.1 TO 2015.2.28; CHANGE OF CONTRACT Name of requester: TAI'AN LIBO ELECTROMECHANICAL TECHNOLOGY CO., LTD. Effective date: 20090313 |
|
| ASS | Succession or assignment of patent right |
Owner name: LIBO HEAVY MACHINE TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: ZHOU MANSHAN Effective date: 20120801 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 271000 TAIAN, SHANDONG PROVINCE TO: 271411 TAIAN, SHANDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120801 Address after: 271411 Ningyang Economic Development Zone, Shandong Province, heavy industry Polytron Technologies Inc Patentee after: Libo Heavy Machine Technology Co., Ltd. Address before: 271000 Taishan youth Pioneer Park, Taishan street, Tai'an, Shandong Patentee before: Zhou Manshan |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090513 |