| Customization: | Available |
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| After-sales Service: | 1year |
| Warranty: | 1year |
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Light Trailer Falling Weight Deflectometer
This lightweight trailer automatic drop weight deflectometer is a trailer-type deflection measurement system for pavement structural strength testing. Developed "FWD laser absolute calibration standard device" for the measurement station of the Ministry of Communications (unique in the world).
The laser absolute method verification device of the drop-weight deflectometer in the measurement station of the Ministry of Communications has an accuracy of 0.5%. This device is the first in the world, and its accuracy is far ahead of similar devices in Europe and America (2%).
1) The deflectometer has been developed since 1986, with a deep accumulation of technology and a market share of more than 70%. This deflectometer is because of its overall lightness, flexible turning, high degree of automation, easy operation, accurate data, long-term stability and reliability of the equipment, and durability. Durable by domestic and foreign users alike.
2) In terms of load control, this deflectometer adopts a variety of control methods: target load, target height and step size setting height (for air test); at the same time, the height of the lifting hammer is accurately controlled, and the height step size is 0.5 mm, higher than similar products.
3) The software has GPS navigation function, the test data includes GPS information, and the test position is displayed directly on the coordinate map.
4) Infrared + Pt100 temperature sensor is used for air and road temperature measurement; automatic temperature compensation function for measurement data; and through software control, the measured temperature is automatically stored; the temperature of the corresponding point is output in the Excel report.
5) Fully automatic "one-button" operation. This deflectometer is equipped with a convenient "one-button" operation mode for customers. A "one-button" button is installed in the cab. After arriving at the test position, the driver only needs to press the button, and the equipment will run automatically. After the test, the equipment will automatically be in a transport locked state;
6) Safety interlock protection device. An interlocking joint is installed between this deflectometer and the test vehicle. During the movement of the test vehicle, the equipment is in a protected state and cannot be operated, which effectively protects the safety of the equipment and the test vehicle.
7) Each main function has an optional second set of programs (or functions) to improve the reliability of the whole machine.
| Impact load range | The default setting is 50KN |
| Dynamic force measurement range | 0 ~ 250KN (extensible) |
| Load measurement accuracy | ≤1% |
| Measurement range of displacement | ±3800µm |
| Shape of load pulse | half-sine wave |
| Bending accuracy | ≤2% |
| Testing spot diameter | 32mm |
| Error of repeatability measurement | ≤2% |
| Bending resolution | 0.1µm |
| Number of displacement sensors | 7 |
| Test speed per point | < 30 seconds/point (measurement three times) |
| Lifting method | hydraulic pressure |
| Lifting and lowering mode of bearing plate | hydraulic pressure |
| Bearing plate | diameter 300mm, independent 4-disk ball head structure, and five spherical joint structures (meet the requirements of ramp detection). |
| Walking speed | ~ 120km/h (depending on road condition) |
| Power supply | 24v |
| Number of temperature sensors | 2 PCS, which can measure air and road temperature |
| Trailer chassis, car chassis, four wheels independent suspension, slight vibration, and smooth operation; | |
| Data transmission | wireless transmission, network cable transmission simultaneously |
| Length * width * height | 3.0×1.4×1.65 meters |
1. Equipped with a laptop. With the "one-button" function: through an external key switch or computer function key or mouse can complete the automatic measurement work, and one person can operate it;
2. Temperature measurement function;
3. Automatic detection function of bending and load value;
4. It can work continuously in the field. There are two original power supply modes: the first method is constantly charged the battery of FWD by the generator of the vehicle; The second is to use 220V chamber power to set the BATTERY of FWD;
5. With mechanical locking function;
6. It has the function of lifting the bearing plate off the road in case of system breakdown so that FWD is in a transportation state;
7. With manual operation function;
8. Function of monitoring the working state of the bearing plate;
9. DMI position and distance measurement function;
10. Installed in the rear of the FWD trailer, one alarm light on the left and one on the right to increase driving safety;
11. Software Functions:
11.1 Normalization of measurement data and standard shaft load;
11.2 It can be compared and converted with Beckman beam;
11.3 Automatically obtain the best conversion coefficient for Beckmann beam conversion;
11.4 The mean value, variance, and deflection representative value can be calculated automatically, and related tables can be generated according to relevant regulations of the Ministry of Communications;
11.5 Data format conversion can be carried out to convert the kilometer data of each measuring point into pile number data;
11.6 Able to make temperature correction;
11.7 Plate void evaluation can be performed (following JTJ 073);
The following applies to multi-point bending:
11.8 The elastic modulus software used for reverse calculation of roadbed material and the data acquisition and processing software of drop hammer bending instrument are integrated, which can reverse analysis of more than 4 layers from the surface, base, roadbed, and subgrade;
11.9 Joint load transfer capacity evaluation (in line with JTG D40)
1. Warranty 1 year of replacement and return.
2. Providing factory visit and study, technical training.
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