CN218158806U - Hydraulic system detection platform based on PLC control - Google Patents
Hydraulic system detection platform based on PLC control Download PDFInfo
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- CN218158806U CN218158806U CN202222303681.1U CN202222303681U CN218158806U CN 218158806 U CN218158806 U CN 218158806U CN 202222303681 U CN202222303681 U CN 202222303681U CN 218158806 U CN218158806 U CN 218158806U
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Abstract
The utility model discloses a hydraulic system detection platform based on PLC control, including operation panel, headstock, hydraulic system, hydro-cylinder fixture device, sensor class and load test module, its characterized in that, the operation panel includes PLC control system, analog quantity acquisition module, control panel, proportional control ware, touch-sensitive screen, still is provided with the printer in the operation panel, the headstock has included converter, ac contactor, the operation panel is electrically connected with headstock and sensor class and hydraulic system; the utility model discloses increase the function of the synchronous test of multiple sensor on the basis of former single test, richened the test content of whole testing process, be applicable to the supporting detection that push bench hydraulic cylinder assembly was accomplished, detecting system is equipped with the control to the hydro-cylinder and running state's detection, can also print the data and the curve chart of experiment content in real time as required simultaneously, make hydraulic cylinder's inspection content abundanter, operate more simply, the experimental result is more accurate.
Description
Technical Field
The utility model relates to a pipe jacking entry driving machine top hydro-cylinder detects technical field with hydraulic power unit, especially relates to a hydraulic system detects platform based on PLC control.
Background
With the rise of the trenchless industry, the development of the pipe-jacking tunneling machine becomes a trend, the jacking oil cylinder and the hydraulic pump station play important roles and are indispensable parts of the pipe-jacking tunneling machine, so that the quality and performance of the oil cylinder and the hydraulic pump station can be controlled to be considered by a pipe-jacking machine manufacturer, the oil cylinder detection experiment mainly comprises four types, namely a minimum starting pressure test, an oil cylinder stroke test, a pressure resistance test and an internal leakage test, and the no-load operation, the pressure resistance test and the sealing test of the hydraulic pump station.
At present, a detection platform for detecting an oil cylinder and a pump station can only simply detect system pressure parameters of the oil cylinder, cannot directly test the full stroke of the oil cylinder, a pressure resistance test, an internal leakage test and the like, can only roughly detect a pressure maintaining value of the oil cylinder system, and influences the comprehensiveness, accuracy and detection efficiency of an actual test result.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problems existing in the prior art and providing a hydraulic system detection platform based on PLC control.
In order to achieve the above purpose, the utility model adopts the following technical proposal:
the utility model provides a hydraulic system detects platform based on PLC control, includes operation panel, headstock, hydraulic system, hydro-cylinder fixture device, sensor class and load test module, the operation panel includes PLC control system, analog quantity acquisition module, control panel, proportional control ware, touch-sensitive screen, still is provided with the printer in the operation panel, and the headstock has included converter, ac contactor, operation panel and headstock and sensor class and hydraulic system electric connection.
As a further technical scheme of the utility model, hydraulic system has included motor group, hydraulic pump group, switching-over valves, oil pipe tee bend ball valve crossover sub, aviation plug crossover sub.
As a further technical scheme of the utility model, the sensor class has included temperature sensor, pressure sensor, displacement sensor, flowmeter.
As a further technical scheme of the utility model, load test module includes input/output sampling interface, working power source interface, various pressure sampling interface, oil tank temperature sampling interface, converter temperature and the state sampling interface of test.
The utility model has the advantages that:
increase the function of the synchronous test of multiple sensor on the basis of former single test, the test content of whole testing process has been richened, be applicable to the supporting detection that push bench hydraulic cylinder assembly was accomplished, detecting system is equipped with the control to the hydro-cylinder and the detection of running state, simultaneously can also print the data and the curve chart of experiment content in real time as required, make hydraulic cylinder's inspection content abundanter, the operation is simpler, the experimental result is more accurate, select required control circuit through examining test table button, and aviation plug socket and the pencil of various specifications have been reserved, with the direct butt joint of supporting prefabricated plug and pencil use, safety and rapidness, high detection efficiency.
Drawings
FIG. 1 is a schematic view of the technical solution of the present invention;
fig. 2 is a first schematic view of the operation table of the present invention;
fig. 3 is a second schematic view of the operation table of the present invention;
fig. 4 is a schematic view of the power box of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the objects of the present invention, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
Referring to fig. 1-4, a hydraulic system detection platform based on PLC control, including an operation console, a power box, a hydraulic system, a cylinder clamp device, sensors and a load test module, the operation console includes a PLC control system, an analog acquisition module, a control panel, a proportional regulator, a touch screen, a printer is also provided in the operation console, the power box includes a frequency converter and an ac contactor, the hydraulic system includes a motor set, a hydraulic pump set, a reversing valve set, an oil pipe three-way ball valve adapter, and an aviation plug adapter, and can test the performance of the oil cylinder, and can also be used for detecting a hydraulic pump station through the three-way ball valve adapter, the aviation plug adapter realizes the start and stop of the pump station, the sensors include a temperature sensor, a pressure sensor, a displacement sensor, and a flow meter, the operation console is electrically connected with the power box, the sensors and the hydraulic system, and specifically, the operation console is connected with the power box and the hydraulic system through cables.
The power box is supplied with alternating current with the specification of AC380V (+ -10%) and 50Hz, and is domestic unified standard industrial power, and the power supply is connected to a small circuit breaker of the variable-frequency power box.
The method comprises the steps that a pump station to be tested is placed in an area to be tested, an oil inlet and an oil outlet of the pump station are connected through a three-way ball valve conversion device of a hydraulic system, the pump station is equivalent to the hydraulic pump station of the hydraulic system, the action of the pump station is controlled through an area with the control panel label 18 of an operation platform, all performances of the pump station are detected, the motor set of the pump station is controlled to be started and stopped through labels 18-1 and 18-2, the area with the label 18-3 controls the reciprocating motion of an oil cylinder, when the pressure of the pump station is detected, the pump station carries out the lifting and falling of the pressure of the pump station through the label 17-2 area, the lifting and falling of the pressure of the pump station are stable and sensitive, the pressure swing of the pump station does not exceed +/-0.3 Mpa, the pressure sensor collects the pressure, PLC logical operation is displayed on a touch screen, when the flow of the pump station is tested, when the pump station is regulated to the maximum displacement no-load operation, the flow of the oil is collected through a flow meter, the flow of the oil, the flow meter transmits a current signal to an analog quantity module, the PLC control system operation, the flow meter is fed back to the touch screen, the touch screen in a digital form display mode, the flow of the touch screen, the hydraulic pump station can be clearly observed, and whether the flow value is within +/-2.5% of the rated flow of the pump.
And (3) sealing detection of a pump station: when the working pressure is less than or equal to 16MPa, the test pressure is 1.5 times of the working pressure, the pressure is maintained for 5 minutes, the current pressure is obtained when the pressure is maintained through the pressure sensor and the PLC, whether the pressure changes and whether leakage exists at each connecting sealing part are observed, when the working pressure is 16-25MPa, the test pressure is 1.25 times of the working pressure, the pressure is maintained for 5 minutes, the current pressure is obtained when the pressure is maintained through the pressure sensor and the PLC, whether the pressure changes and whether leakage exists at each connecting sealing part are observed, the current pump station oil temperature is displayed through the temperature sensor and the PLC operation, the current pump station oil temperature is displayed on the touch screen, the load test of the pump station is more than 30 minutes, the oil temperature requirement is less than or equal to 70 ℃, the oil temperature at the moment, if the current pump station oil temperature is more than the temperature at the moment, the buzzer in the area 19 is used for alarming, and meanwhile the touch screen is used for alarming.
The measured oil cylinder is placed on an oil cylinder clamp, interfaces at two ends of the oil cylinder are respectively connected to an A port and a B port of a hydraulic system, the oil cylinder is detected through a control panel with the reference number 16, a reference number 16-1 area button controls the starting and stopping of a hydraulic pump, a potentiometer regulates the rotating speed of the hydraulic pump to control the flow rate of hydraulic oil, a reference number 16-2 area button controls the starting and stopping of the extension of the oil cylinder, a reference number 16-3 area button controls the starting and stopping of the contraction of the oil cylinder, a reference number 16-4 area button controls a heat dissipation device of the oil cylinder, when the hydraulic pump is started, the rotating speed of the hydraulic pump is regulated through the potentiometer with the reference number 16-1 area, at the moment, the rotating speed of the hydraulic pump collects the frequency of a frequency converter through a communication protocol between a PLC and the frequency converter to convert the rotating speed of the hydraulic pump to feed back to a touch screen, the pressure of the test system is regulated through the reference number 17-2 area, the tested hydraulic cylinder is started under the no-load working condition, the hydraulic cylinder reciprocates for a plurality of times in the whole stroke, air in the hydraulic cylinder is completely removed, after the air is completely discharged, the opening A of the electromagnetic directional valve of the hydraulic station is controlled to be opened, output hydraulic oil flows into the opening A of the hydraulic cylinder to push the push rod of the hydraulic cylinder to move, meanwhile, the hydraulic oil at the other end of the hydraulic cylinder flows into the hydraulic station through the opening B of the electromagnetic directional valve, the overflow valve is adjusted by a potentiometer in the area 17-2 to ensure that the pressure in the hydraulic cylinder is gradually increased, the current pressure is recorded to be displayed as the minimum starting pressure on a touch screen through the pressure sensor at the opening A and the displacement sensor on the hydraulic cylinder bracket through the conversion of a PLC control system, the opening B of the electromagnetic directional valve of the hydraulic station is controlled to be opened when the number of the displacement sensor changes, outputting hydraulic oil to flow into a port B of an oil cylinder to push a push rod of the oil cylinder to move, meanwhile, hydraulic oil at the other end of the oil cylinder flows into a hydraulic station through a port A of an electromagnetic directional valve, the direction of the oil cylinder can be changed by changing the movement of the push rod of the oil cylinder to different directions through 16-2 and 16-3, the oil cylinder can be collected from an initial position to a final position through a displacement sensor, the maximum extending stroke of the oil cylinder is displayed on a touch screen through conversion of a PLC (programmable logic controller), when pistons of the hydraulic cylinder are respectively stopped at two ends of the stroke (a single-action hydraulic cylinder is positioned at a stroke limit position), a potentiometer in a region 17-2 is used for adjusting an overflow valve, so that the pressure in the cylinder is gradually increased, 1.5 times of nominal pressure is respectively applied to a working cavity, a system pressure maintaining test is carried out for 2 minutes through the region 17-3, under the condition that the oil cylinder is under the 1.5 times of nominal pressure, at the moment, the condition that whether the pressure drop value on the touch screen is changed is observed to judge whether the oil cylinder has an external leakage phenomenon, at this moment, the piston moves to a middle position, a working oil port is locked, the two working oil port is pressurized to a specified pressure maintaining curve, and whether the pressure change in the two working port is observed to judge whether the oil cylinder, and whether the oil cylinder is leaked standard oil cylinder is leaked or not. In the hydro-cylinder testing process, the oil temperature can rise along with the flexible of hydro-cylinder ceaselessly, when the oil temperature surpassed the upper limit of the temperature of touch-sensitive screen settlement, the region of operation panel control panel reference numeral 19 has the bee calling organ warning, the touch-sensitive screen has the suggestion of reporting to the police simultaneously, the heat abstractor who starts hydraulic system through 16-4 regions at this moment reduces the oil temperature, in the whole process of detecting the hydro-cylinder, required data, all can be with the form record of curve on the touch-sensitive screen, wait to examine the completion back, by the printing function of touch-sensitive screen, the printer is being connected, play the paper report, compare with current detection hydro-cylinder technique, degree of automation is higher, the test accuracy is also higher.
This hydraulic system detects PLC that platform contained, communication module, the extension module, the analog quantity module, touch-sensitive screen and printer etc, can carry out effective control and make the signal acquisition to various sensors to the system, specifically be to opening the power system who drops into and open and carry out accurate swift control with the acceleration and deceleration, simultaneously in power system operation process, gather the numerical value of each sensor, and real-time recording, the true effectual demonstration of state when with the system operation through the touch-sensitive screen comes out, reduce the input of manpower and materials and the influence of experimenter subjective factor, strengthen experimental security and rationality.
This hydraulic system detects function that increases the synchronous test of multiple sensor on the basis of the original single test of platform, whole testing process's test content has been richened, be applicable to the supporting detection that push bench hydraulic cylinder assembly was accomplished, detecting system is equipped with the control to the hydro-cylinder and running state's detection, simultaneously can also print in real time experiment content and partial data and curve chart as required, make hydraulic cylinder's inspection content abundanter, the operation is simpler, the experimental result is more accurate, select required control circuit through detecting the platform button, the aviation plug socket and the pencil of various specifications are reserved, with supporting prefabricated plug and the direct butt joint of pencil use, safety and quickness, can satisfy the supporting detection that the hydro-cylinder assembly was accomplished, the commonality is good, high efficiency.
The method comprises the steps that the electromagnetic directional valve is adjusted by the variable-frequency power box, the hydraulic pump is started and stopped, the hydraulic system dissipates heat, the system is normally powered on firstly, then a detected part is connected, detection is carried out according to detection requirements, a touch screen can display data of the oil cylinder and a pump station in the detection process, the display of the touch screen comprises a pressure maintaining value during oil cylinder detection, the maximum stroke of the oil cylinder, the extending speed of the oil cylinder, the flow rate of the hydraulic pump station, a pressure stabilizing value, the maximum pressure of the pump station, the temperature of the oil tank, the temperature of a frequency converter, the state of the oil cylinder and the state of the pump station, the stroke of the oil cylinder is set, running temperature alarm is set, and experiment labels are set.
The printing device can automatically store monitoring data, such as starting pressure, cylinder stroke, A port pressure curve, B port pressure curve and the like.
The frequency converter of headstock is as the communication between the PLC as the main website of slave station and operation panel, opens through communication line control frequency converter and stops the function, stops heat abstractor through control line 1, stops the pump station motor through control line 2.
The load test module comprises an input/output sampling interface, a working power supply interface, various pressure sampling interfaces, an oil tank temperature sampling interface, a frequency converter temperature and state sampling interface for testing, the load test is that 1 frequency converter participates in a power system for carrying out two motors, a motor power line is connected with a variable frequency power box through an aviation plug-in to reserve an aviation plug-in, and the test can be normally carried out according to a test flow.
The hydraulic system detects system pressure, A port pressure, B port pressure, hydraulic pump flow, oil tank temperature, oil cylinder stroke and hydraulic pump state controlled by a platform, and each detection point is provided with a corresponding independent loop.
The utility model discloses when using, install the hydro-cylinder on the hydro-cylinder anchor clamps, control panel through the operation panel, control hydraulic pump output hydraulic oil and get into the hydro-cylinder, promote the hydro-cylinder beam to stretch out, the hydraulic oil of the other end flows into the oil tank through returning oil pipe simultaneously, can adjust the flow of hydraulic pump through the converter speed governing, proportional valve adjusts pressure, change stretching out and retracting of hydro-cylinder through the electromagnetic directional valve, detect the maximum pressure of hydro-cylinder with this, the pressurize value of hydro-cylinder, the A mouth pressure of electromagnetic directional valve, B mouth pressure, hydraulic pump flow, the hydro-cylinder stroke, oil tank temperature etc.;
the method comprises the following steps that a pump station is placed in a to-be-detected area and is controlled by a control panel of an operation platform, an aviation adapter on a power box is connected with a hydraulic pump station to control starting and stopping of the pump station and reversing of an electromagnetic valve, an oil inlet pipe and an oil return pipe of the pump station are connected through a three-way ball valve adapter of a hydraulic system to control oil inlet and oil return of an oil cylinder, and system pressure, flow of hydraulic oil and maximum bearing pressure of the pump station are detected;
in the detection process, system pressure, pressure of an A port, pressure of a B port, a system pressure maintaining value, the maximum stroke of an oil cylinder, the flow of a hydraulic system and the maximum pressure of a pump station are all acquired by various sensors through control lines between the sensors and a PLC (programmable logic controller), current signals are transmitted to an analog quantity module, and the PLC performs operation inside and feeds back the current signals to a touch screen, so that the current signals are displayed on the touch screen.
Above, it is only the preferred embodiment of the present invention, and it is not limited to the present invention in any form, although the present invention has been disclosed as above with the preferred embodiment, but not limited to the present invention, and any person skilled in the art can make some changes or modifications to the equivalent embodiment of the equivalent change within the technical scope of the present invention without departing from the technical scope of the present invention, but any brief introduction modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention all still belong to the technical scope of the present invention.
Claims (4)
1. The utility model provides a hydraulic system detects platform based on PLC control, includes operation panel, headstock, hydraulic system, hydro-cylinder fixture device, sensor class and load test module, its characterized in that, the operation panel includes PLC control system, analog quantity acquisition module, control panel, proportional control ware, touch-sensitive screen, still is provided with the printer in the operation panel, and the headstock has included converter, ac contactor, operation panel and headstock and sensor class and hydraulic system electric connection.
2. The PLC-control-based hydraulic system detection table as claimed in claim 1, wherein the hydraulic system comprises a motor set, a hydraulic pump set, a reversing valve set, an oil pipe three-way ball valve adapter and an aviation plug adapter.
3. The PLC-based hydraulic system detection table as claimed in claim 1, wherein the sensors comprise a temperature sensor, a pressure sensor, a displacement sensor and a flow meter.
4. The hydraulic system detection table based on PLC control of claim 1, wherein the load test module comprises an input/output sampling interface for testing, a working power supply interface, a pressure sampling interface, an oil tank temperature sampling interface, and a frequency converter temperature and state sampling interface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222303681.1U CN218158806U (en) | 2022-08-31 | 2022-08-31 | Hydraulic system detection platform based on PLC control |
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| CN202222303681.1U CN218158806U (en) | 2022-08-31 | 2022-08-31 | Hydraulic system detection platform based on PLC control |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116880352A (en) * | 2023-09-07 | 2023-10-13 | 山东万里红信息技术有限公司 | Automatic control system and method for packaging equipment based on state sensing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116880352A (en) * | 2023-09-07 | 2023-10-13 | 山东万里红信息技术有限公司 | Automatic control system and method for packaging equipment based on state sensing |
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