CN202326540U - Variable frequency control hydraulic driving system - Google Patents
Variable frequency control hydraulic driving system Download PDFInfo
- Publication number
- CN202326540U CN202326540U CN 201120456875 CN201120456875U CN202326540U CN 202326540 U CN202326540 U CN 202326540U CN 201120456875 CN201120456875 CN 201120456875 CN 201120456875 U CN201120456875 U CN 201120456875U CN 202326540 U CN202326540 U CN 202326540U
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- Prior art keywords
- motor
- oil pump
- quantitative oil
- hydraulic
- driving system
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Abstract
The utility model discloses a variable frequency control hydraulic driving system, which comprises a power supply, a programmable logic controller (PLC), a frequency converter, a motor, a quantitative oil pump and an executing mechanism, wherein the frequency converter is respectively connected with the power supply and the motor and is connected with the output end of the PLC, an output shaft of the motor is connected with the quantitative oil pump, and the quantitative oil pump is connected with the executing mechanism through an oil pipe and a hydraulic valve arranged on the oil pipe. The frequency converter is controlled by the PLC to realize the speed regulation on the motor, and the motor drives the quantitative oil pump to supply hydraulic oil to a system according to action requiring oil quantity, so the quantitative oil pump is used as a work pump to drive the executing mechanism, the throttle speed regulation is not needed, the defects of high heat generation and high power consumption of an ordinary throttle speed regulation system are overcome, the low-cost program control speed regulation of a bridge detection vehicle hydraulic system is realized, and meanwhile, the variable frequency control hydraulic driving system has the characteristic that the use and the maintenance are convenient.
Description
Technical field
The utility model relates to a kind of VFC hydraulic driving system, is applicable to the hydraulic driving of bridge inspection vehicle.
Background technique
The hydraulic driving system of bridge inspection vehicle (abbreviation bridge-checking vehicle); Be that a kind of greatest requirements flow is little, respectively moving demand volume changes hydraulic driving system greatly; Be mainly used in erection process, belong to and be interrupted work, less demanding to factors such as adjusting speed accuracy, response times.
The hydraulic fluid flow rate demand of bridge-checking vehicle hydraulic system if adopt single oil pump to give system's a plurality of action executive component fuel feeding, is difficult to supporting to the variable displacement pump that is fit between 2.5l/min to 25l/min at home; If adopt the speed governing of quantitative oil pump fuel feeding throttle type, system's heating is big, and power consumption is high, and quickens the rotten of hydraulic oil easily.
The model utility content
The purpose of the utility model is to provide a kind of VFC hydraulic driving system, and the hydraulic system heating is big under the solution quantitative oil pump oil providing condition, power consumption is high and quicken the rotten problem of hydraulic oil easily.
For realizing above-mentioned purpose, the technological scheme that the utility model adopts is following:
A kind of VFC hydraulic driving system is characterized in that, includes power supply, PLC controller, frequency variator, motor, quantitative oil pump and actuator; Said frequency variator connects power supply and motor respectively, and is connected with the output terminal of said PLC controller; The output shaft of said motor connects said quantitative oil pump, and said quantitative oil pump connects said actuator through pipeline, the hydrovalve that is located on the pipeline.
Said motor is frequency conversion three phase electric machine or non-frequency three phase electric machine.
The utility model carries out speed governing through PLC controller control frequency variator to motor; Need oil mass to give system supply hydraulic oil by the motor driving quantitative oil pump according to action; Thereby use quantitative oil pump as working pump driving execution mechanism; And need not use throttle grverning, and overcome the shortcoming that the heating of common throttle grverning system is big, power consumption is high, realized the low-cost program control speed governing of bridge inspection vehicle hydraulic system; Simultaneously, the utlity model has use and characteristics easy to maintenance.
Description of drawings
Fig. 1 is the utility model embodiment's a structural representation.
Embodiment
For the purpose, technological scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing.
The utility model adds the speed-regulating scheme of quantitative oil pump through adopting the VWF frequency modulation and voltage modulation, utilizes the segmentation velocity modulation speed function of frequency variator, can be in inner control rotating speed of motor in a big way, and the acquisition system controls needed hydraulic fluid flow rate.
Referring to Fig. 1, a kind of VFC hydraulic driving system includes power supply, PLC controller, frequency variator, motor, quantitative oil pump and actuator; Said frequency variator connects power supply and motor respectively, and is connected with the output terminal of said PLC controller; The output shaft of said motor connects said quantitative oil pump, and said quantitative oil pump connects said actuator through pipeline, the hydrovalve that is located on the pipeline.
Wherein, said motor adopts common non-frequency three phase electric machine.
Described actuator is a plurality of or multiple, when specifically using, can dispose according to actual needs, and dispose match equipment such as corresponding hydrovalve.
The output oil of said quantitative oil pump outputs to described actuator through hydraulic oil pipeline, the hydrovalve that is located on the pipeline, thus the driving execution mechanism action.
Described power supply is input to frequency variator and after the frequency variator modulation, is transported to described motor with specific voltage and frequency, drives described motor and arrives each actuator by the hydraulic oil that the setting rotating speed is rotated to drive quantitative oil pump output respective amount.
Motor and quantitative oil pump direct connection described in the utility model is implemented, the running of motor drives through PLC controller control frequency variator; The PLC controller obtains the corresponding hydraulic fluid flow rate of quantitative oil pump output to actuator through the control frequency variator thereby in predetermined scope, change motor speed; The control command of actuator is set up corresponding relation with hydraulic fluid flow rate, carries out program control by the PLC controller.
Store each actuator in the storage of PLC controller in advance and move the Control Parameter of needed control frequency variator; Because the output flow of quantitative oil pump has linear corresponding relation with motor speed; Therefore can precompute each actuator and move the corresponding Control Parameter of required hydraulic fluid flow rate; Be kept in the storage of PLC controller; This Control Parameter system moves the quantitative oil pump rotating speed of the correspondence that needed hydraulic fluid flow rate calculated according to each actuator of system, that is rotating speed of motor is confirmed.
When system moves; By the action command of PLC controller basis to actuator; Aforementioned Control Parameter according to design in advance sends control signals to frequency variator, and frequency variator, is promptly controlled motor and driven quantitative oil pump with certain rotation speed operation with certain rotating speed to the Electric Machine Control motor rotation according to the power supply of this control signal output certain voltage and frequency then; By the actuator of required flow output hydraulic oil, thereby accomplish specified action to correspondence.
The above only is the preferred implementation of the utility model; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; Can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection domain of the utility model.
Claims (2)
1. a VFC hydraulic driving system is characterized in that, includes power supply, PLC controller, frequency variator, motor, quantitative oil pump and actuator; Said frequency variator connects power supply and motor respectively, and is connected with the output terminal of said PLC controller; The output shaft of said motor connects said quantitative oil pump, and said quantitative oil pump connects said actuator through pipeline, the hydrovalve that is located on the pipeline.
2. a kind of VFC hydraulic driving system according to claim 1 is characterized in that, said motor is frequency conversion three phase electric machine or non-frequency three phase electric machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120456875 CN202326540U (en) | 2011-11-17 | 2011-11-17 | Variable frequency control hydraulic driving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120456875 CN202326540U (en) | 2011-11-17 | 2011-11-17 | Variable frequency control hydraulic driving system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202326540U true CN202326540U (en) | 2012-07-11 |
Family
ID=46438521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120456875 Expired - Lifetime CN202326540U (en) | 2011-11-17 | 2011-11-17 | Variable frequency control hydraulic driving system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202326540U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817885A (en) * | 2012-08-09 | 2012-12-12 | 恒天九五重工有限公司 | Power system |
| CN106286438A (en) * | 2016-09-20 | 2017-01-04 | 山西汾西矿业（集团）有限责任公司 | Fully-mechanized mining working emulsion pump constant-pressure liquid supply system and control method thereof |
-
2011
- 2011-11-17 CN CN 201120456875 patent/CN202326540U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817885A (en) * | 2012-08-09 | 2012-12-12 | 恒天九五重工有限公司 | Power system |
| CN106286438A (en) * | 2016-09-20 | 2017-01-04 | 山西汾西矿业（集团）有限责任公司 | Fully-mechanized mining working emulsion pump constant-pressure liquid supply system and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JILIN CONSTRUCTION ENGINEERING GROUP CO., LTD. Free format text: FORMER OWNER: LANGFANG KAIBO BUILDING MACHINERY TECHNOLOGY CO., LTD. Effective date: 20131010 Free format text: FORMER OWNER: MECHANIZATION RESEARCH BRANCH, CHINA ACADEMY OF BUILDING RESEARCH Effective date: 20131010 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 065001 LANGFANG, HEBEI PROVINCE TO: 130061 CHANGCHUN, JILIN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20131010 Address after: 130061 No. 222, democracy Avenue, Changchun, Jilin Patentee after: JILIN CONSTRUCTION ENGINEERING GROUP CO., LTD. Address before: 065001 entrepreneurship Road, Langfang economic and Technological Development Zone, Hebei Patentee before: Langfang Kaibo Building Machinery Technology Co., Ltd. Patentee before: Mechanization Research Branch, China Academy of Building Research |
|
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 130061 No. 222 East democratic Street, Jilin, Changchun Patentee after: JILIN CONSTRUCTION ENGINEERING GROUP CO., LTD. Address before: 130061 No. 222, democracy Avenue, Changchun, Jilin Patentee before: JILIN CONSTRUCTION ENGINEERING GROUP CO., LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |