I. Product Introduction:
TD719 series mixture rutting tester is a new generation product independently developed by Hebei Tianqi Xingzi Testing Equipment Co., Ltd. According to T0719-2011 "Asphalt mixture rutting Test" in JTGE20-2011 "Test Regulations for Asphalt and Asphalt Mixture in Highway Engineering". the instrument adopts automatic control with high precision and accurate results. through the national quality inspection to reach A standard.
the equipment is a test system mounted in a fully enclosed incubator. the box is equipped with test data to observe the progress of the test. All the sensors in the test system are connected to the external control system, which makes the control of the test more convenient.
Computer control system for animation display, so that you more intuitive understanding of the control steps.
Two, equipment characteristics:
1. through six years of production experience, according to the feedback of the market, constantly improve the product to make the structure more reasonable and more convenient for customers to use.
2, in the use of key components, in strict accordance with the specification requirements, while higher than the specification requirements, can truly reflect the measurement results.
3, in the temperature control, the use of high precision PID control technology, so that the temperature in the box is strictly controlled at 60℃±0.5℃, fully meet the experimental requirements.
4, the use of high precision displacement sensor, the accuracy of 1, fully meet the test requirements.
5, the test process with automatic, manual control function, with time to adjust the position of the car.
6, the software has powerful functions, mature, friendly interface, can modify the nuclear value of the displacement, to ensure accurate data.
7. the integrated structure of the testing machine and the constant temperature box is made of stainless steel.
8, the use of constant temperature box for mold health trial.
9, can adjust the test wheel pressure at any time, up to 1.0Mpa, to meet different test requirements
10, double operation mode, can not use a computer and reduce the difficulty of operation.
Three, technical parameters:
1, sample size: 300X300X50 (100) mm.
2, test wheel size: 200X50mm.
3, try to discuss the pressure: 0.5±0.05 MPA-1.0 ±0.05Mpa adjustable
4. Rolling speed: 42±1 times/min
5, heating power: 3KW
6, temperature control: 60±0.5℃
7, displacement measurement range: 0-40mm±0.01mm
8. Overall dimension:18008001500mm.
9, the ambient temperature: 35℃ or less.
10, relative humidity: 85% or less.
11. Power consumption: 4KW.
12. Net weight of the instrument: 300kg
13, power supply voltage: 380v
Four, the operation steps
1. Open the rut tester application program, open the "control display panel" and "test curve" window;
2. Turn on the power switch of the electric cabinet and select the "Communication Port" button. Then the communication indicator on the system operation interface blinks, indicating that the communication is connected.
3. Check whether the displayed temperature is normal.
4. Switch on the power supply.
5. Setting of working standard (must be confirmed) (Must be confirmed): under the menu of "Working Standard Setting", set a series of information about the test as follows: standard test or non-standard test non-standard test Selection: Select standard test during standard test: the test temperature is automatically set to 60℃ for test
A. Line standard test non-line standard test line standard test time is automatically set to 60min.
B. Enter other test related information.
6. Press the "Temperature control" button on the control panel.
7. Start of automatic rut detection test (Note: after the test temperature is stable):
A. Open the pneumatic switch, the test rubber wheel automatically rises, take out the test wheel support frame.
B. Load the test mold, adjust the lock to lock the test mold.
C. Turn off the pneumatic switch and the test rubber wheel drops automatically.
D. Adjust the upper and lower positions of the displacement sensor, and the numerical display of the displacement sensor should be in the range of 1mm~4mm.
E. Close the thermostat door.
F. Click the "TEST START" button on the control display panel (Note: this should be performed after the test temperature is stabilized again.
G. after the test is finished automatically, the test results should be saved in the designated folder (the test report can be printed and saved at any time.
H. after the end of the test, open the pneumatic switch, the test rubber wheel will rise automatically, and take out the test mold.
I. Adjust the installation position of the displacement sensor upward as far as possible (to prevent the displacement of the detector top during the next thick mold test).
J. Place the test mold reverse buckle at the bottom of the test wheel, turn off the pneumatic switch, and the test rubber wheel will fall automatically.
8. Turn off the power supply of the electric control box;
9. Exit the system application and power off the computer and printer.
10. Disconnect the power supply.
V. Technical requirements
the exterior surface should be smooth and clean. There should be a nameplate, including manufacturer, model, factory number and date. The whole machine should be reliably grounded.
the walking distance of the two test wheels was 230mm±10mm, and the round-trip rolling speed was (42±1) times /min (21 rounds /min).
the contact pressure between the test wheel and the specimen is 0.7Mpa±0.05Mpa at 60℃.
4. Temperature control range: incubator 60±1℃, test piece 60±0.5℃.
5. the main machine will stop automatically when the test time reaches 1 hour or the displacement deformation reaches 25mm.
Six, check method
Standard instruments for calibration
1.1 Stopwatch: the dividing value is 0.1s.
1.2 Standard thermometer: range 200℃, accuracy 0.1℃.
1.3 Steel ruler: measuring range greater than 300mm, indexing value 1mm
2 Verification Procedure
2.1 Visually inspect the appearance of the equipment and check the insulation of the whole machine with a pen.
2.2 Test wheel ground pressure measurement: the measurement is carried out at 60℃. A 50mm thick steel plate is placed on the test table, a piece of millimeter square paper is spread on it, and a new carbon paper is spread on it. after the prescribed 700N load is added, the static pressure carbon paper of the test wheel can be obtained on the square paper, and the ground pressure can be obtained accordingly.
2.3 Prepare a standard specimen and test it according to the standard procedure. Measure the walking distance of the test wheel with a steel ruler and randomly check six round trips; the longitudinal round-trip rolling speed was measured with a stopwatch for six random 1min periods. Check whether the main engine can stop automatically when the test time reaches 1 hour or the displacement deformation displayed by the machine reaches more than 25mm.
2.4 When the specimen temperature indicated by the equipment is 60±0.5℃, the temperature of the constant greenhouse and the surface of the specimen is measured with the standard thermometer. The difference between the temperature indicated by the equipment and the reading of the standard thermometer is the temperature control accuracy, and 6 points are measured in different parts of the constant greenhouse and the surface of the specimen.
3 Evaluation of Results
All indicators that meet the technical requirements are qualified. If the ground pressure of the test wheel does not meet the requirements, the load should be adjusted appropriately.