CN217033426U - Hydraulic remote control system of electric porcelain bending and twisting testing machine - Google Patents
Hydraulic remote control system of electric porcelain bending and twisting testing machine Download PDFInfo
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- CN217033426U CN217033426U CN202220308735.0U CN202220308735U CN217033426U CN 217033426 U CN217033426 U CN 217033426U CN 202220308735 U CN202220308735 U CN 202220308735U CN 217033426 U CN217033426 U CN 217033426U
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Abstract
The utility model discloses a hydraulic remote control system of an electroceramic bending and twisting testing machine, which relates to the technical field of control of a hydraulic system of the testing machine and comprises a computer, a PLC (programmable logic controller), an analog quantity output module, a variable frequency speed regulator, a variable frequency motor, a hydraulic oil pump, a hydraulic pipeline system and an analog quantity input module, wherein the hydraulic pipeline system comprises a pilot-operated proportional overflow valve, a pressure sensor and a temperature sensor; the control end of the hydraulic pump station is controlled by a PLC (programmable logic controller), the variable speed control of an oil pump motor is realized by using a variable frequency speed regulator, communication is carried out through a computer and the PLC according to used test conditions, the rotating speed of an oil pump is changed in real time, and the oil source pressure is adjusted, so that the appropriate oil source flow and the oil source pressure are controlled under the corresponding test environment, the remote control effect is achieved, and manual close control starting and pressure regulation are not needed.
Description
Technical Field
The utility model relates to the technical field of control of a hydraulic system of a testing machine, in particular to a hydraulic remote control system of an electric porcelain bending and twisting testing machine.
Background
In the process of power transmission and transformation, the mechanical performance tests of bending resistance, bending resistance and the like are required to be carried out on devices such as post insulators, electric appliance porcelain bushings, lightning rods and the like. With the rapid development of the power transmission and transformation process, the ultra-high voltage power transmission and transformation project is rapidly increased, and more high-rise buildings, especially large-scale devices, must be tested more rigorously. The electroceramics turn round testing machine that uses at present is that fluid pressure type drive mode is experimental, and the pressure regulating mode of electroceramics turn round testing machine mostly is direct manual regulation on hydraulic power unit control valve plate, through the adjustment handle who adjusts the guide's formula overflow valve on the valve plate, whether the pointer registration according to system pressure table shows the system pressure of current regulation and reaches the target value.
In order to reduce the on-way loss of oil output by a hydraulic pump station and ensure the control sensitivity of a hydraulic system, the hydraulic pump station is mostly placed near an electric porcelain bending and twisting testing machine, but in order to prevent the electric porcelain insulator from being damaged and splashed in the testing process to cause personal injury to workers, personnel are generally not allowed to be on the site of equipment in the testing process, so that the system is required to be adjusted before the test is started, but the mode can not accurately realize the real-time adjustment and monitoring of the system pressure, the waste of redundant energy is also caused by quantitative pressure and flow, the heating condition of the system is serious, and therefore a control system capable of remotely adjusting and monitoring the system pressure in real time is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to: in order to solve the technical problem, the utility model provides a hydraulic remote control system of an electric porcelain bending and twisting testing machine, which has the function of remotely adjusting and monitoring the system pressure in real time.
The utility model specifically adopts the following technical scheme for realizing the purpose: a hydraulic remote control system of an electric porcelain bending and twisting testing machine comprises a computer, an analog quantity output module, an analog quantity input module and a variable frequency speed regulator;
the computer is in communication connection with the PLC;
the front end of the analog output module is in communication connection with the PLC;
the signal end of the variable frequency speed regulator is connected with a variable frequency motor, the output end of the variable frequency motor is provided with a hydraulic oil pump, the hydraulic oil pump is connected with an electric porcelain bending tester, and a hydraulic pipeline system is arranged between the hydraulic oil pump and the electric porcelain bending tester;
the front end of the analog input module is in communication connection with the PLC.
Furthermore, the communication connection mode of the computer software program and the PLC controller is Ethernet port communication.
Further, a touch screen is arranged on the surface of the computer.
Furthermore, the hydraulic pipeline system comprises a pilot type proportional overflow valve, a pressure sensor and a temperature sensor.
Furthermore, the pilot-operated proportional overflow valve is in signal connection with the analog output module.
Furthermore, the pressure sensor and the temperature sensor are in signal connection with the analog input module.
The utility model has the following beneficial effects:
1. the control end of the hydraulic pump station is controlled by a PLC (programmable logic controller), the variable speed control of an oil pump motor is realized by using a variable frequency speed regulator, the communication is carried out through a computer and the PLC according to the used test conditions, the rotating speed of an oil pump is changed and the pressure of an oil source is adjusted in real time, so that the appropriate flow and pressure of the oil source are controlled under the corresponding test environment, the remote control effect is achieved, and manual close control starting and pressure regulation are not needed;
2. the system pressure is adjusted and monitored in real time through a remote control system, and when the tested object is broken and splashed in the process of performing the electric porcelain bending and twisting test, an operator is far away from the testing machine, so that the precise operation can be realized, and the safety of the tester can be ensured;
3. the discharge capacity of the oil pump is controlled by controlling the rotating speed of the variable frequency motor, so that the effect of regulating the output flow of the hydraulic pump station is achieved; the output pressure of the hydraulic pump station is adjusted by controlling the input electric signal of the proportional overflow valve; through the speed regulation of the variable frequency motor, the energy consumption of the hydraulic pump station can be effectively reduced, and therefore the effects of saving energy and reducing the heat productivity of the system are achieved.
Drawings
FIG. 1 is an electrical schematic block diagram of the present invention;
FIG. 2 is a PLC electrical wiring diagram of the present invention;
FIG. 3 is a control software interface of a hydraulic pump station of the electric porcelain bending and twisting testing machine.
Reference numerals are as follows: 1. a computer; 2. a PLC controller; 3. an analog quantity output module; 4. a variable frequency governor; 5. a variable frequency motor; 6. a hydraulic oil pump; 7. a hydraulic conduit system; 701. a pilot type proportional relief valve; 702. a pressure sensor; 703. a temperature sensor; 8. and an analog quantity input module.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model.
Example 1:
as shown in fig. 1 to 3, the present embodiment provides a hydraulic remote control system for an electroceramic torsion testing machine, including a computer 1, a PLC controller 2, an analog output module 3, a variable frequency speed regulator 4, a variable frequency motor 5, a hydraulic oil pump 6, a hydraulic pipeline system 7, and an analog input module 8, where the hydraulic pipeline system 7 includes a pilot-operated proportional overflow valve 701, a pressure sensor 702, and a temperature sensor 703; the system flow regulation is realized by sending an instruction to the PLC 2 through the Ethernet port communication by a computer 1 software program, controlling the variable frequency speed regulator 4 to regulate the rotating speed of the variable frequency motor 5 through the EM AQ02 analog quantity output module 3, and further changing the discharge capacity of the hydraulic oil pump 6; the system pressure regulation is realized by controlling an EM AQ02 analog quantity output module 3 to regulate a voltage signal output to a proportional amplifier of a pilot type proportional relief valve 701 through a computer 1 software program to a PLC 2 instruction control through Ethernet port communication, and the proportional amplifier regulates a current signal output to a proportional electromagnet according to the change of an input voltage signal, so that the electromagnetic force of the proportional electromagnet is controlled, and the stepless regulation of the system pressure is realized; through the operation of the computer 1, sending an instruction to the PLC 2, and controlling the switching value of each relay in the circuit of the variable frequency motor 5 by using the switching value logic control function of the PLC 2 to realize the control of starting and stopping the variable frequency motor 5; the parameters of the pressure and the oil temperature of the hydraulic pump station are displayed on a monitoring window of a software program of the computer 1 in real time through a pressure sensor 702 and a temperature sensor 703 which are arranged in a hydraulic pipeline system 7 of the electric porcelain bending and twisting testing machine, so that the real-time monitoring of the oil pressure and the oil temperature of the system is realized.
A control method of a hydraulic remote control system of an electric porcelain bending and twisting testing machine comprises the following operation steps:
the method comprises the following steps: a software starting button of the computer 1 is selected, the computer 1 sets the M0.0 byte of the PLC 2 to be 1, a relay in the PLC 2 is attracted, the hydraulic oil pump 6 is started to run, the M0.0 byte of the PLC 2 is reset to be 0 after the button is lifted, and the relay is locked in a self-locking mode.
Step two: and (3) selecting a stop button, setting 1 for the M0.1 byte of the PLC controller 2 by the computer 1, attracting a relay in the PLC controller 2, stopping the hydraulic oil pump, and resetting the M0.1 byte of the PLC controller 2 to 1 after the button is lifted.
Step three: when the emergency stop button is pressed, the computer 1 sets 1 to the M0.2 byte of the PLC controller 2, the PLC controller 2 disconnects all the relays, and the hydraulic oil pump 6 stops working.
Step four: the pressure adjustment of the hydraulic oil pump is divided into six gears of 0%, 20%, 40%, 60%, 80% and 100%, after the corresponding button is pressed, the pressure values of the hydraulic station to be adjusted are respectively written into VB0 registers of the PLC 2, and are respectively 0MPa, 4MPa, 8MPa, 12MPa, 16MPa and 20MPa, and the proper pressure gear can be selected according to the magnitude of the test force value.
Step five: the motor speed adjustment is divided into six gears of 0%, 20%, 40%, 60%, 80% and 100%, after a corresponding button is pressed, the rotating speed values of the variable frequency motor to be adjusted are respectively written into a VB1 register of the PLC 2, and are respectively 0r/min, 400r/min, 800r/min, 1200r/min, 1600r/min and 2000r/min, and a proper pressure gear can be selected according to the test requirement on the loading speed.
Example 2:
the working principle and the operation process of the utility model are as follows: a worker places experimental articles in the electric porcelain bending and twisting testing machine in advance, then enters a safe operation room to control the electric porcelain bending and twisting testing machine through remote control software (shown in figure 3), selects a start button to start and start the hydraulic oil pump 6, presses oil source pressure buttons with different percentages to adjust the pressure of a hydraulic pipeline system 7, presses a motor speed button with different percentages to adjust the rotating speed of a variable frequency motor 5, further realizes the effect of remotely adjusting the running parameters of the testing machine, can conveniently check the testing temperature and the system pressure value of the testing machine at any time through a display screen on the remote control software, can timely stop the testing machine by pressing the 'emergency stop' button in the testing process, prevents accidents from occurring in the testing process, and can stop the hydraulic oil pump 6 by pressing the 'stop' button after the testing is finished, after the working is stopped, the testing machine is confirmed to be in a safe state, then a worker approaches the testing machine to check and record a test result, and therefore the electric porcelain bending and twisting test is completed.
Claims (6)
1. The utility model provides an electroceramics bending torsion testing machine hydraulic pressure remote control system, includes computer (1), analog output module (3), analog input module (8) and variable frequency speed regulator (4), its characterized in that:
the computer (1) is in communication connection with the PLC controller (2);
the front end of the analog quantity output module (3) is in communication connection with the PLC (2);
the signal end of the variable-frequency speed regulator (4) is connected with a variable-frequency motor (5), the output end of the variable-frequency motor (5) is provided with a hydraulic oil pump (6), the hydraulic oil pump (6) is connected with an electric porcelain bending tester, and a hydraulic pipeline system (7) is arranged between the hydraulic oil pump (6) and the electric porcelain bending tester;
the front end of the analog input module (8) is in communication connection with the PLC (2).
2. The hydraulic remote control system of the electroceramic torsion tester according to claim 1, characterized in that: the communication connection mode of the software program of the computer (1) and the PLC controller (2) is Ethernet port communication.
3. The hydraulic remote control system of the electroceramic torsion tester according to claim 1, characterized in that: the surface of the computer (1) is provided with a touch screen.
4. The hydraulic remote control system of the electroceramic torsion tester according to claim 1, characterized in that: the hydraulic pipeline system (7) comprises a pilot type proportional overflow valve (701), a pressure sensor (702) and a temperature sensor (703).
5. The hydraulic remote control system of the electroceramic torsion bending tester according to claim 4, characterized in that: the pilot type proportional overflow valve (701) is in signal connection with the analog quantity output module (3).
6. The hydraulic remote control system of the electric porcelain torsion tester as claimed in claim 4 or 5, wherein: the pressure sensor (702) and the temperature sensor (703) are in signal connection with the analog quantity input module (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220308735.0U CN217033426U (en) | 2022-02-15 | 2022-02-15 | Hydraulic remote control system of electric porcelain bending and twisting testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220308735.0U CN217033426U (en) | 2022-02-15 | 2022-02-15 | Hydraulic remote control system of electric porcelain bending and twisting testing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217033426U true CN217033426U (en) | 2022-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220308735.0U Active CN217033426U (en) | 2022-02-15 | 2022-02-15 | Hydraulic remote control system of electric porcelain bending and twisting testing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217033426U (en) |
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2022
- 2022-02-15 CN CN202220308735.0U patent/CN217033426U/en active Active
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