CN217401301U - Hydraulic constant-pressure servo control system - Google Patents
Hydraulic constant-pressure servo control system Download PDFInfo
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- CN217401301U CN217401301U CN202123374862.5U CN202123374862U CN217401301U CN 217401301 U CN217401301 U CN 217401301U CN 202123374862 U CN202123374862 U CN 202123374862U CN 217401301 U CN217401301 U CN 217401301U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Abstract
The utility model relates to a hydraulic pressure constant pressure servo control system, include: the system comprises an oil tank, a heater, a circulating pump motor set, a main pump motor set, a servo control module and a servo hydraulic cylinder; the oil tank is respectively connected with the heater and the circulating pump motor set, the main pump motor set is connected with the servo control module, and the servo control module is connected with the servo hydraulic cylinder; the heater with the circulating pump motor group is right respectively fluid in the oil tank heats and circulates, the drive of main pump motor group servo control module control servo hydraulic cylinder is in order to predetermine the position and predetermine the pressure operation. The utility model discloses a servo hydraulic cylinder subassembly constant position, constant pressure's automatic control have solved the problem that welding product defect or overlap appear in welding process.
Description
Technical Field
The utility model belongs to the technical field of friction stir welding equipment technique and specifically relates to indicate a hydraulic pressure constant pressure servo control system.
Background
The friction stir welding is a novel green solid phase welding technology, has the characteristics of small deformation after welding, low residual stress, no pollution, no smoke, safe welding process and the like, is suitable for welding materials such as aluminum alloy, magnesium alloy, copper alloy and the like, and is widely applied to the fields of aerospace, rail transit, new energy automobiles, motor casing production and the like.
In the actual friction stir welding process, the welding seam often has the condition that the flatness of the surface of the welded material is not ideal, which can lead to the condition that a welded product has defects or large flashes in the welding process. In order to solve the problem, a hydraulic constant-pressure servo control system needs to be designed to ensure that the welding quality meets the use requirement.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model aims to solve the technical problem that overcome among the prior art in friction stir welding process, the welding seam can appear by the plane degree on welded material surface unsatisfactory, leads to welding product defect or the defect of great overlap to appear.
In order to solve the technical problem, the utility model provides a hydraulic pressure constant pressure servo control system, include: the system comprises an oil tank, a heater, a circulating pump motor set, a main pump motor set, a servo control module and a servo hydraulic cylinder;
the oil tank is respectively connected with the heater and the circulating pump motor set, the main pump motor set is connected with the servo control module, and the servo control module is connected with the servo hydraulic cylinder;
the heater with the circulating pump motor group is right respectively the fluid in the oil tank heats and circulates, the main pump motor group drive servo control module control servo hydraulic cylinder is in order to predetermine the position and predetermine the pressure operation.
In an embodiment of the present invention, a pressure measuring module is disposed between the servo control module and the servo hydraulic cylinder.
In an embodiment of the utility model, the main pump motor group with be provided with filter, pressure regulating module and check valve between the servo control module, the main pump motor group with the filter is connected, the filter with the pressure regulating module is connected, the pressure regulating module with the check valve is connected, the check valve with the servo control module is connected.
The utility model discloses an embodiment, the pressure regulating module includes overflow valve, pressure sensor and manometer.
In an embodiment of the utility model, still include the accumulator safety valve subassembly, the accumulator safety valve subassembly with servo control module is connected.
In an embodiment of the present invention, the accumulator safety valve set includes a stop valve, an automatic safety valve and an unloading valve, the stop valve is respectively connected to the automatic safety valve and the unloading valve, and the automatic safety valve and the unloading valve are connected.
In an embodiment of the present invention, the accumulator safety valve set is connected to a first accumulator.
In an embodiment of the present invention, the servo control module is connected to a second accumulator.
In one embodiment of the present invention, the fuel tank is provided with a liquid level meter, an air filter, a liquid level signal transmitter and a liquid temperature signal transmitter.
In an embodiment of the present invention, the oil tank is connected to an oil cooler.
Compared with the prior art, the technical scheme of the utility model have following advantage:
hydraulic pressure constant pressure servo control system, include: the system comprises an oil tank, a heater, a circulating pump motor set, a main pump motor set, a servo control module and a servo hydraulic cylinder; the oil tank is respectively connected with the heater and the circulating pump motor set, the main pump motor set is connected with the servo control module, and the servo control module is connected with the servo hydraulic cylinder; the heater with the circulating pump motor group is right respectively the fluid in the oil tank heats and circulates, the main pump motor group drive servo control module control servo hydraulic cylinder is in order to predetermine the position and predetermine the pressure operation. The utility model discloses a servo hydraulic cylinder subassembly of main pump motor group drive servo control module control makes servo hydraulic cylinder subassembly act on the load with the pressure value of setting for after going down to the position of setting for and keeping the position invariable, has realized the automatic control of the constant position of servo hydraulic cylinder subassembly, constant pressure, has solved the problem that defect or overlap appear in welding process in the welding product.
Drawings
In order to make the content of the present invention more clearly understood, the present invention will be described in further detail with reference to the following embodiments of the present invention, in conjunction with the accompanying drawings, wherein:
fig. 1 is a schematic diagram of a hydraulic constant pressure servo control system of the present invention;
labeled as: an oil tank 1; a main pump motor group 2; a circulating pump motor group 3; filters 4, 15; an overflow valve 5; a check valve 6; a pressure sensor 7; pressure gauges 8 and 16; a servo control module 9; a pressure measuring joint 10; an accumulator relief valve assembly 11; a first accumulator 12; a second accumulator 13; a servo hydraulic cylinder 14; an oil cooler 17; a heater 18; a liquid level gauge 19; an oil drain plug 20; an air-cooling filter 21; a temperature sensor 22; and a liquid level flood generator 23.
Detailed Description
The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.
Referring to fig. 1, the utility model discloses a hydraulic pressure constant pressure servo control system, include: the system comprises an oil tank, a heater, a circulating pump motor set, a main pump motor set, a servo control module and a servo hydraulic cylinder;
the oil tank is respectively connected with the heater and the circulating pump motor set, the main pump motor set is connected with the servo control module, and the servo control module is connected with the servo hydraulic cylinder;
the heater with the circulating pump motor group is right respectively the fluid in the oil tank heats and circulates, the main pump motor group drive servo control module control servo hydraulic cylinder is in order to predetermine the position and predetermine the pressure operation.
And a pressure measuring module is arranged between the servo control module and the servo hydraulic cylinder, and comprises a pressure sensor and a pressure measuring joint.
The main pump motor group with be provided with filter, pressure regulating module and check valve between the servo control module, the main pump motor group with the filter is connected, the filter with the pressure regulating module is connected, the pressure regulating module with the check valve is connected, the check valve with the servo control module is connected. The pressure regulating module comprises an overflow valve, a pressure sensor and a pressure gauge, the overflow valve provides safe pressure for the hydraulic constant-pressure servo control system, and the pressure sensor and the pressure gauge are used for detecting the pressure of the hydraulic constant-pressure servo control system.
The oil tank is provided with a liquid level meter, an air filter, a liquid level signal transmitter and a liquid temperature signal transmitter, and the side surface of the oil tank is provided with a heater.
The utility model discloses a hydraulic pressure constant pressure servo control system still includes energy storage ware relief valve subassembly, energy storage ware relief valve subassembly with servo control module connects. The accumulator safety valve assembly comprises a stop valve, an automatic safety valve and an unloading valve, wherein the stop valve is respectively connected with the automatic safety valve and the unloading valve, and the automatic safety valve is connected with the unloading valve. The energy accumulator safety valve group is connected with a first energy accumulator, and the servo control module is connected with a second energy accumulator. The first accumulator, the second accumulator and the accumulator safety valve group are used for providing stable pressure for the hydraulic constant-pressure servo control system. The energy accumulator safety valve assembly is used for protecting the pressure of an energy accumulator from exceeding a preset safety value, the unloading valve is set to be 22MPa when leaving a factory, and the stop valve is in an open state and the unloading valve is in a closed state in a normal working state; when the hydraulic constant-pressure servo control system and the energy accumulator are checked and maintained, the stop valve and the unloading valve are opened, and the oil of the energy accumulator is drained.
The system that this embodiment provided, through the servo hydraulic cylinder subassembly of main pump motor group drive servo control module control, make servo hydraulic cylinder subassembly down to the position of setting for and keep the position invariable back to act on the load with the pressure value of setting for, the constant position of servo hydraulic cylinder subassembly, the automatic control of constant pressure has been realized, the problem of welding product because of the excessive defect or overlap of pressure appearance has been solved, provide safe pressure for the system through the overflow valve, provide flow and steady pressure for the system through the energy storage ware, the pressure of protecting the energy storage ware through energy storage ware safety valve group is no longer than the safe value of setting for.
Based on the above embodiments, the present embodiment further describes a hydraulic constant pressure servo control system;
the utility model discloses a hydraulic constant pressure servo control system, which comprises a hydraulic station, a servo hydraulic cylinder, a constant pressure hydraulic module, a pressure sensor and a back pressure module;
the hydraulic station comprises a main pump motor set, a circulating pump motor set, an energy accumulator safety valve assembly, a pressure regulating module, a filter, an air filter, a heater, a liquid level signal generator, a liquid temperature signal generator, a pressure gauge, a pipeline and other auxiliary parts.
The servo hydraulic cylinder is a hydraulic actuating mechanism, a constant-pressure hydraulic module is installed on the servo hydraulic cylinder, and the constant-pressure hydraulic module is used for controlling the servo hydraulic cylinder to move downwards to a set position and controlling the servo hydraulic cylinder to output constant pressure.
The hydraulic station is connected with the oil cooling machine through an inlet hose and an outlet hose, an oil inlet pipe at an opening on one side of a base of the hydraulic station is connected with an oil inlet pipe of the oil cooling machine, an oil outlet pipe of the oil cooling machine is connected with an oil outlet pipe of the oil cooling machine, an P, T port at an opening on the other side of the hydraulic station is respectively connected with a P, T port of a constant-pressure hydraulic module on the servo hydraulic cylinder, and the oil pipe connection must be tightened to ensure that the joint is oil-tight.
The hydraulic constant-pressure servo control system is characterized in that the servo control module is communicated with a PLC (programmable logic controller) and a main equipment control system of a touch screen, a communication protocol is Profinet, the servo control module receives a work instruction sent by the main equipment control system and outputs a ready signal to the main equipment control system, and analog signals such as pressure and position and liquid level and liquid temperature switching signals are output to the main equipment control system to display and monitor.
The working process of the hydraulic constant-pressure servo control system has two control modes: positioning control and constant pressure control;
the positioning control is to preset a target position of the servo hydraulic cylinder on a touch screen interface of the equipment main control system, the servo control module starts the main pump motor set after receiving a working instruction of the equipment main control system, and after outlet pressure oil enters the servo control module through the filter and the one-way valve, the servo control module controls the servo hydraulic cylinder to descend to the set position and keep the position constant until receiving a next instruction sent by the equipment main control system;
constant voltage control is for preset on equipment main control system's the touch-sensitive screen interface the target pressure of servo pneumatic cylinder, servo control module is receiving behind equipment main control system's the operating command, start the main pump motor group, as export pressure oil warp the filter with the check valve gets into behind the servo control module, servo control module control servo pneumatic cylinder acts on the load with the pressure value of setting for, until receiving next instruction that equipment main control system sent.
The hydraulic constant-pressure servo control system needs to perform preparation work and debugging work before working;
the preparation work is as follows: a. clean hydraulic oil is added into the oil tank, an oil filter vehicle with the oil filter vehicle diameter of more than 20 mu m is used for filtering and oiling, and the first oiling amount accounts for 70-80% of the volume of the oil tank.
b. And the pressure of nitrogen charging gas of the energy accumulator on the hydraulic station and the energy accumulator on the frame is kept at 3-5 MPa.
c. And checking whether the hydraulic pipeline and the joints are connected tightly and reliably.
d. And checking whether the motor, the electric connection and the plug are correct and reliable or not, and whether the safety standards are met or not.
e. A pump shell of A10VSO10DR is filled with No. 46 filtered clean oil with the diameter of 10-20 microns through an upward L port of the pump.
f. And opening two manual ball valves on the hydraulic station and the inlet and outlet pipes of the oil cooler, and starting the filter pump and the oil cooler after an oil way is smooth.
The commissioning worker acts as: a. the knob on the electrical control cabinet is turned to a "local", "jog", or "manual position".
b. If the oil temperature is lower than 10 ℃, firstly using a 2KW heater (SRY-380/2) arranged on the oil tank to heat hydraulic oil in the oil tank, then starting a filtering circulating pump motor set to circulate oil in the oil tank, and after the oil temperature in the oil tank exceeds 20 ℃, automatically stopping heating by the heater so as to start a main pump motor set to work.
c. If the temperature of the oil in the oil tank exceeds 35 ℃, the circulating oil pump motor set and the oil cooling machine must be started to cool and circulate the oil in the oil tank, and when the temperature of the oil in the oil tank is lower than 35 ℃, the main pump motor set can be started to work.
d. Starting a motor and checking whether the steering is correct; firstly, hydraulic oil is added to an oil drainage port on the top surface of the pump, so that the pump is filled with the hydraulic oil. The motor starting button is inching, and the motor rotation direction is clockwise when the motor tail end is observed. Otherwise, the motor wiring is readjusted and then confirmed again. And then the motor runs in a no-load mode, the leakage condition and the running condition of the pump at each position are checked, and the motor is processed in time.
e. Setting of valves such as a pressure regulating valve and a back pressure valve, and setting each regulating valve to a normal use state when the system is shipped.
f. The set values of the position and the pressure in the debugging process are gradually increased from small to normal.
The maintenance and fault removal of the hydraulic constant-pressure servo control system are as follows: a. the oil must be added to the oil tank by a filter, and the oil consumption for the first use (oil-free in the oil cylinder and the pipeline) is about 160L/set. After the plunger pump is used for the first time or replaced, clean hydraulic oil is filled into the pump through an oil drainage port on the pump.
b. The oil quality in the oil tank is checked after the oil tank is used for three months for the first time, and then the oil tank is checked for 1 time every 6 months in the normal use process, and the oil tank can also be checked in advance according to specific conditions.
c. The filter cartridge should be replaced three months after initial use, and half a year thereafter. The filter element should be replaced in time when the oil pressure of the filter is signaled to be blocked.
d. The pressure sensor and the pressure gauge are periodically calibrated every year, and whether the system pressure is normal or not is often observed.
e. If the fault occurs in the work, the machine should be stopped for checking immediately to remove the fault. The disassembly inspection process strictly prohibits starting and maintenance under pressure.
f. After the hydraulic element is disassembled and maintained, the hydraulic element can be reinstalled after being cleaned by kerosene or diesel oil.
g. The stop valve needs to be closed during maintenance so as to reduce the loss of hydraulic oil; whether the starting-up condition is met or not is checked after maintenance; before the pump works, whether each pipeline connecting point is normal or not is checked, and whether the oil pumping port and the oil tank are connected smoothly or not is checked.
h. When elements lower than the liquid level of the oil tank are overhauled, oil in the oil tank needs to be pumped out.
The system provided by the embodiment receives a work instruction sent by the main control system and outputs a ready signal to the main control system through communication with the main control system of the equipment, outputs analog signals of pressure, position and the like to the main control system for displaying and monitoring, can realize automatic control of constant pressure and constant position of the servo hydraulic cylinder of the equipment, and has the characteristics of high efficiency, high control precision, high stability and the like.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (10)
1. A hydraulic constant pressure servo control system, comprising: the system comprises an oil tank, a heater, a circulating pump motor set, a main pump motor set, a servo control module and a servo hydraulic cylinder;
the oil tank is respectively connected with the heater and the circulating pump motor set, the main pump motor set is connected with the servo control module, and the servo control module is connected with the servo hydraulic cylinder;
the heater with the circulating pump motor group is right respectively the fluid in the oil tank heats and circulates, the main pump motor group drive servo control module control servo hydraulic cylinder is in order to predetermine the position and predetermine the pressure operation.
2. The hydraulic constant pressure servo control system according to claim 1, wherein a pressure measuring module is provided between the servo control module and the servo hydraulic cylinder.
3. The hydraulic constant-pressure servo control system according to claim 1, wherein a filter, a pressure regulating module and a one-way valve are arranged between the main pump motor set and the servo control module, the main pump motor set is connected with the filter, the filter is connected with the pressure regulating module, the pressure regulating module is connected with the one-way valve, and the one-way valve is connected with the servo control module.
4. The hydraulic constant-pressure servo control system according to claim 3, wherein the pressure regulating module comprises an overflow valve, a pressure sensor and a pressure gauge.
5. The hydraulic constant pressure servo control system of claim 1, further comprising an accumulator relief valve assembly connected with the servo control module.
6. The hydraulic constant pressure servo control system of claim 5, wherein the accumulator relief valve bank comprises a stop valve, an automatic relief valve, and an unloader valve, the stop valve being connected to the automatic relief valve and the unloader valve, respectively.
7. The hydraulic constant pressure servo control system of claim 5, wherein a first accumulator is connected to the accumulator relief valve block.
8. The hydraulic constant pressure servo control system of claim 1, wherein a second accumulator is connected to the servo control module.
9. The servo-control system according to claim 1, wherein the tank is equipped with a level gauge, an air filter, a level signal transmitter and a liquid temperature signal transmitter.
10. The hydraulic constant pressure servo control system according to claim 1, wherein an oil cooler is connected to the oil tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123374862.5U CN217401301U (en) | 2021-12-29 | 2021-12-29 | Hydraulic constant-pressure servo control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123374862.5U CN217401301U (en) | 2021-12-29 | 2021-12-29 | Hydraulic constant-pressure servo control system |
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| Publication Number | Publication Date |
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| CN217401301U true CN217401301U (en) | 2022-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202123374862.5U Active CN217401301U (en) | 2021-12-29 | 2021-12-29 | Hydraulic constant-pressure servo control system |
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| CN (1) | CN217401301U (en) |
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2021
- 2021-12-29 CN CN202123374862.5U patent/CN217401301U/en active Active
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