CN212928356U - Four-cylinder synchronous hydraulic system of servo pump of laser cutting lifting platform - Google Patents
Four-cylinder synchronous hydraulic system of servo pump of laser cutting lifting platform Download PDFInfo
- Publication number
- CN212928356U CN212928356U CN202020710191.1U CN202020710191U CN212928356U CN 212928356 U CN212928356 U CN 212928356U CN 202020710191 U CN202020710191 U CN 202020710191U CN 212928356 U CN212928356 U CN 212928356U
- Authority
- CN
- China
- Prior art keywords
- oil
- valve
- port
- gear pump
- servo
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model relates to a synchronous hydraulic system of four jars of laser cutting lift platform servo pump, the system adopts four sets of servo motor gear pump package to control four hydro-cylinders respectively and rises, descend, the system includes oil tank, level gauge, air cleaner, oil absorption oil filter, gear pump, servo motor, hydro-cylinder valve unit and hydro-cylinder, and the level gauge is installed in the oil tank side, and air cleaner installs at the oil tank top surface, servo motor drive gear pump. The outlet of the oil absorption and filtration device is connected with the inlet of the gear pump, the outlet of the gear pump is connected with the oil cylinder control valve group P, the port A of the oil cylinder control valve group is connected with the lower cavity of the oil cylinder, the port B of the oil cylinder control valve group is connected with the upper cavity of the oil cylinder, and the port T of the oil cylinder control valve group returns to the oil tank. The scheme overcomes the synchronization error caused by the manufacturing error of the oil cylinder, and the system has high synchronization precision and is resistant to unbalance loading; the lower cavity of the oil cylinder is provided with a balance valve system which operates stably.
Description
Technical Field
The utility model relates to a hydraulic system especially relates to a synchronous hydraulic system of laser cutting lift platform servo pump four-cylinder, belongs to laser cutting lathe hydraulic pressure technical field.
Background
The laser cutting lifting platform is used for a feeding mechanism of a laser cutting machine tool, is large in area and heavy in weight, and adopts four cylinders to lift synchronously. The main parameters are as follows: the lifting height is 240mm, the rising time is less than 10s, the system pressure is 16MPa, and the maximum jacking force of a single oil cylinder is 8 t. The hydraulic system requires four cylinders to be synchronous, and has strong unbalance loading resistance.
Original hydraulic system adopts the synchronous motor control four jars of four antithetical couplets synchronous, and synchronous motor precision is up to 1%, nevertheless because there is the deviation in the hydro-cylinder preparation to increase synchronous error, the synchronous requirement can not be satisfied completely to the system, and synchronous motor anti unbalance loading ability is in within 5%, has placed strict requirement to the work piece, uses inconveniently.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a four-cylinder synchronous hydraulic system of a servo pump of a laser cutting lifting platform is provided, each oil cylinder is provided with a displacement sensor for independent control, the synchronous error caused by the manufacturing error of the oil cylinder is overcome, and the system has high synchronous precision and is anti-unbalance loading; the lower cavity of the oil cylinder is provided with a balance valve system which operates stably.
For solving the technical problem, the technical scheme of the utility model as follows, a synchronous hydraulic system of four jars of laser cutting lift platform servo pump, the system adopts four sets of servo motor gear pump package to control four hydro-cylinders respectively and rises, descends, the system includes oil tank, level gauge, air cleaner, oil absorption oil filter, gear pump, servo motor, hydro-cylinder valve unit and hydro-cylinder, and the level gauge is installed in the oil tank side, and air cleaner installs at the oil tank top surface, and servo motor drives the gear pump, and the export of oil absorption oil filter and the access connection of gear pump, the export of gear pump and hydro-cylinder valve unit P are connected, and hydro-cylinder valve unit A mouth and hydro-cylinder lower cavity are connected, and hydro-cylinder valve unit B mouth and hydro-cylinder epicoele are connected, and hydro-cylinder valve.
As an improvement of the utility model, the hydro-cylinder valve unit includes valve block, relief valve, manometer, electromagnetic directional valve and balanced valve, valve block P mouth inboard through inside oil duct respectively with relief valve P mouth electromagnetic directional valve P mouth the manometer is connected, electromagnetic directional valve A mouth with balanced valve (mouth) is connected, balanced valve (mouth) with valve block A mouth inboard is connected, electromagnetic directional valve B mouth respectively with valve block B mouth inboard balanced valve (mouth) is connected.
As an improvement of the utility model, each oil cylinder is provided with a displacement sensor.
As an improvement of the utility model, the gear pump is the 6ml/r gear pump of discharge capacity, and servo motor is 2kw servo motor.
As an improvement of the utility model, the relief valve is NG6 screw-in cartridge valve, and the solenoid directional valve is NG6 solenoid directional valve, and the balanced valve is the screw-in cartridge valve.
As an improvement of the utility model, the vertical installation of servo motor, gear pump, oil absorption oil filter are located inside the oil tank, and on the oil tank panel was arranged in to the valve block, servo motor, gear pump, oil absorption oil filter, the independent integration of valve block of every group.
Compared with the prior art, the utility model has the advantages of: the four-cylinder synchronous hydraulic system of the servo pump of the laser cutting lifting platform adopts four sets of servo motor gear pump sets to respectively control four oil cylinders to ascend and descend, each oil cylinder is provided with a displacement sensor to control independently, the synchronous error caused by the manufacturing error of the oil cylinder is overcome, and the system is high in synchronous precision and is anti-unbalance-loading; the lower cavity of the oil cylinder is provided with a balance valve system which operates stably; the threaded cartridge valve has a compact structure, is not easy to leak oil and is convenient to maintain. The screw-thread cartridge valve has compact structure, is not easy to leak oil, has reliable action, small pressure loss and convenient maintenance.
Drawings
FIG. 1 is a schematic diagram of the present invention;
fig. 2 is an outline view of the present invention.
Reference numerals: 1. an oil tank; 2. a liquid level meter; 3. an air cleaner; 4. an oil suction filter; 5. a gear pump; 6. A servo motor; 7. a safety valve; 8. a pressure gauge; 9. an electromagnetic directional valve; 10. a balancing valve; 11. a valve block; 12. And an oil cylinder.
The specific implementation mode is as follows:
for the purpose of enhancing the understanding of the present invention, the following detailed description is made with reference to the accompanying drawings.
Example 1: referring to fig. 1, a four-cylinder synchronous hydraulic system of a servo pump of a laser cutting lifting platform adopts four sets of servo motor gear pump sets to respectively control four oil cylinders to ascend and descend, a displacement sensor is installed on each oil cylinder, the displacement sensor monitors the position of the oil cylinder and uploads signals to a PLC, the PLC compares the position signals of each oil cylinder and sends the signals to a corresponding servo motor driver, and the servo motor adjusts the rotating speed to quickly correct the position deviation of the oil cylinder by utilizing the characteristic of quick response of the servo motor. The system comprises an oil tank 1, a liquid level meter 2, an air filter 3, an oil suction filter 4, a gear pump 5, a servo motor 6, a safety valve 7, a pressure gauge 8, an electromagnetic directional valve 9, a balance valve 10, a valve block 11 and an oil cylinder 12. The liquid level meter 2 is arranged on the side surface of the oil tank 1, and the air filter 3 is arranged on the top surface of the oil tank 1. The servo motor 6 drives the gear pump 5. The outlet of the oil suction oil filter 4 is connected with the inlet of the gear pump 5, the outlet of the gear pump 5 is connected with the P port of the valve block 11, the A port of the valve block 11 is connected with the lower cavity of the oil cylinder 12, the B port of the valve block 11 is connected with the upper cavity of the oil cylinder 12, and the T port of the valve block 11 returns to the oil tank. The inside of the P port of the valve block 11 is respectively connected with the P port of the safety valve 7, the P port of the electromagnetic directional valve 9 and the pressure gauge 8 through internal oil ducts, the A port of the electromagnetic directional valve 9 is connected with the second port of the balance valve 10, the first port of the balance valve 10 is connected with the inside of the A port of the valve block 11, and the B port of the electromagnetic directional valve 9 is respectively connected with the inside of the B port of the valve block 11 and the third port of the balance valve 10.
Wherein, the gear pump 5 is a gear pump with the discharge capacity of 6ml/r, the servo motor 6 is a 2kw servo motor, the safety valve 7 is an NG6 threaded cartridge valve, the electromagnetic directional valve 9 is an NG6 electromagnetic directional valve, and the balance valve 10 is a threaded cartridge valve.
As shown in fig. 2, the servo motor 6 is vertically installed, the gear pump 5 and the oil suction filter 4 are located inside the oil tank 1, the valve block 11 is arranged on the panel of the oil tank, and each group of the servo motor 6, the gear pump 5, the oil suction filter 4 and the valve block 11 are independently integrated.
The servo motor is vertically mounted, so that the running noise of the system is reduced; and each group of servo motor, gear pump and valve block are independently integrated and designed, so that the installation and maintenance are convenient.
The working principle is as follows:
four sets of servo motor gear pump sets are adopted to respectively control four oil cylinders to ascend and descend, a displacement sensor is arranged on each oil cylinder, the displacement sensor monitors the position of the oil cylinder and uploads signals to a PLC, the PLC sends the position signals of each oil cylinder to a corresponding servo motor driver in a comparison mode, and the servo motor adjusts the rotating speed to quickly correct the position deviation of the oil cylinder by utilizing the characteristic of quick response of the servo motor.
1. Rising: the servo motor 6 drives and starts the gear pump 5, the electromagnet YV2 of the electromagnetic directional valve 9 is electrified (P → A), hydraulic oil discharged from the gear pump 5 passes through the electromagnetic directional valve 9(P → A) and the balance valve 10 (II → I) to reach the lower cavity of the oil cylinder 12, the oil cylinder 12 rises, and the hydraulic oil discharged from the upper cavity of the oil cylinder 12 returns to the oil tank 1 through the electromagnetic directional valve 9 (B → T). The speed at which the cylinder 12 rises varies with the rotational speed of the servomotor 6.
2. And (3) descending: the servo motor 6 drives the gear pump 5, the electromagnet YV1 of the electromagnetic reversing valve 9 is electrified (P → B), hydraulic oil discharged from the gear pump 5 flows to the upper cavity of the oil cylinder 12 through the electromagnetic reversing valve 9(P → B), the port III of the balance valve 10 is opened under the action of pressure oil, the hydraulic oil discharged from the lower cavity of the oil cylinder 12 returns to the oil tank 1 through the balance valve 10 (I → II) and the electromagnetic reversing valve 9(A → T), and the oil cylinder 12 descends. The speed at which the cylinder 12 descends varies with the rotation speed of the servo motor 6.
3. Stopping: when the servo motor 6 stops, the electromagnet of the electromagnetic directional valve 9 loses power and returns to the middle position (P → T), the port III of the balance valve 10 loses pressure (I → II), the balance valve is closed, the pressure is maintained, and the oil cylinder 12 stops.
The four-cylinder synchronous hydraulic system of the servo pump of the laser cutting lifting platform adopts four sets of servo motor gear pump sets to respectively control four oil cylinders to ascend and descend, each oil cylinder is provided with a displacement sensor to control independently, the synchronous error caused by the manufacturing error of the oil cylinder is overcome, and the system is high in synchronous precision and is anti-unbalance-loading; the lower cavity of the oil cylinder is provided with a balance valve system which operates stably; the adopted threaded cartridge valve has a compact structure and is not easy to leak oil; the servo motor is vertically arranged, so that the running noise of the system is reduced conveniently; the servo motor, the gear pump and the valve block are designed in an integrated mode, and installation and maintenance are convenient.
The four-cylinder synchronous hydraulic system technology of the servo pump of the laser cutting lifting platform can be applied to a six-cylinder synchronous hydraulic system of the servo pump of the laser cutting lifting platform and other occasions requiring high multi-cylinder synchronous precision and unbalance load resistance.
Finally, it should be noted that: the technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by the arbitrary combination of the above technical features. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered as the protection scope of the present invention.
Claims (6)
1. The utility model provides a synchronous hydraulic system of four jars of laser cutting lift platform servo pump which characterized in that: the system adopts four sets of servo motor gear pump sets to control four oil cylinders to ascend and descend respectively, the system comprises an oil tank, a liquid level meter, an air filter, an oil absorption oil filter, a gear pump, a servo motor, an oil cylinder control valve set and oil cylinders, the liquid level meter is installed on the side face of the oil tank, the air filter is installed on the top face of the oil tank, the servo motor drives the gear pump, an outlet of the oil absorption oil filter is connected with an inlet of the gear pump, an outlet of the gear pump is connected with an oil cylinder control valve set P, an A port of the oil cylinder control valve set is connected with an lower cavity of the oil cylinders, a B port of the oil.
2. The servo-pump four-cylinder synchronous hydraulic system of the laser cutting lifting platform as claimed in claim 1, wherein: the oil cylinder control valve group comprises a valve block, a safety valve, a pressure gauge, an electromagnetic reversing valve and a balance valve, wherein the inner side of a port P of the valve block is respectively connected with a port P of the safety valve, a port P of the electromagnetic reversing valve and the pressure gauge through an internal oil duct, a port A of the electromagnetic reversing valve is connected with a port II of the balance valve, a port I of the balance valve is connected with the inner side of a port A of the valve block, and a port B of the electromagnetic reversing valve is respectively connected with the inner side of a port B of the valve block and a port III of the balance valve.
3. The servo-pump four-cylinder synchronous hydraulic system of the laser cutting lifting platform as claimed in claim 1, wherein: each oil cylinder is provided with a displacement sensor.
4. The servo-pump four-cylinder synchronous hydraulic system of the laser cutting lifting platform as claimed in claim 1, wherein: the gear pump is a gear pump with the discharge capacity of 6ml/r, and the servo motor is a 2kw servo motor.
5. The servo-pump four-cylinder synchronous hydraulic system of the laser cutting lifting platform as claimed in claim 2, wherein: the safety valve is a NG6 threaded cartridge valve, the electromagnetic directional valve is a NG6 electromagnetic directional valve, and the balance valve is a threaded cartridge valve.
6. The servo-pump four-cylinder synchronous hydraulic system of the laser cutting lifting platform as claimed in claim 1, wherein: the servo motors are vertically installed, the gear pump and the oil suction filter are located inside the oil tank, the valve blocks are arranged on the panel of the oil tank, and each group of servo motors, the gear pump, the oil suction filter and the valve blocks are independently integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020710191.1U CN212928356U (en) | 2020-05-03 | 2020-05-03 | Four-cylinder synchronous hydraulic system of servo pump of laser cutting lifting platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020710191.1U CN212928356U (en) | 2020-05-03 | 2020-05-03 | Four-cylinder synchronous hydraulic system of servo pump of laser cutting lifting platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212928356U true CN212928356U (en) | 2021-04-09 |
Family
ID=75314632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020710191.1U Active CN212928356U (en) | 2020-05-03 | 2020-05-03 | Four-cylinder synchronous hydraulic system of servo pump of laser cutting lifting platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212928356U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183438A (en) * | 2021-09-13 | 2022-03-15 | 上海尧治自动化系统工程有限公司 | Pressure/position control method for die jacking hydraulic cylinder of vehicle door flanging machine |
-
2020
- 2020-05-03 CN CN202020710191.1U patent/CN212928356U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183438A (en) * | 2021-09-13 | 2022-03-15 | 上海尧治自动化系统工程有限公司 | Pressure/position control method for die jacking hydraulic cylinder of vehicle door flanging machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108569631A (en) | Method is increased for the raised high-precision hydraulic synchronization system of large-scale tower crane supernumerary segment and jacking control method and supernumerary segment | |
| CN101586584A (en) | A kind of high level, tall and slender structure construction creeping formwork hydraulic synchronous control system | |
| CN212928356U (en) | Four-cylinder synchronous hydraulic system of servo pump of laser cutting lifting platform | |
| CN105257614B (en) | A kind of hydraulic jack high-precise synchronization control complexes of super large jumbo | |
| CN208087096U (en) | One kind being used for the raised high-precision hydraulic synchronous jacking system of large-scale tower crane supernumerary segment | |
| CN106837905B (en) | A kind of synchronous eight cylinder hydraulic systems of shearing type lifting machine platform | |
| CN206545617U (en) | A kind of pans lowering or hoisting gear | |
| CN205190395U (en) | Hydraulic cylinder high -precision synchronization control integrated equipment of super large jumbo | |
| CN205190393U (en) | Hydraulic drive device of super large jumbo | |
| CN102616700B (en) | Oil and air hybrid driven lifting control device | |
| CN2860682Y (en) | Middle tank car four-cylinder synchronization hydraulic lifting motion | |
| CN2885935Y (en) | Double hanging-point arc gate hydraulic headstock gear | |
| CN2632368Y (en) | Precision numerical control stretching hydropress shaping correcting controller | |
| CN216381340U (en) | Hollow hydraulic oil cylinder wellhead type oil pumping machine | |
| CN206382868U (en) | A kind of nitrogen balance cylinder system | |
| CN102295199B (en) | Power pump station for hydraulic elevator/hydraulic lift | |
| CN113833439A (en) | Hydraulic control system, method and application of hollow hydraulic oil cylinder wellhead type pumping unit | |
| CN105545845B (en) | A kind of fluid pressure drive device of super large jumbo | |
| CN205349892U (en) | Electrical system of drive super large jumbo | |
| CN111997944A (en) | Hydraulic system for automobile lifter | |
| CN205977864U (en) | Multistage rotatory hydraulic cylinder | |
| CN111997945A (en) | Hydraulic system for automobile lifter | |
| CN206253959U (en) | A kind of nitrogen balance device for principal spindle of machine tool | |
| CN105257613A (en) | Electric control system for driving super-large heavy equipment | |
| CN216077773U (en) | Pressure closed loop electro-hydraulic bending machine hydraulic system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |