Vibro Crawler
In order to bring the results accomplished in the laboratory under best possible conditions into the field an as mobil as possible solution was chosen in this project, initially. An automotive sounding crawler that involved a minimal logistic effort.
Without much expense, the existing hydraulic system and the existing CPT hydraulic cylinder were modified with high-dynamic control components and pressure accumulator into a cyclic parametrizable system. The Vibro Crawler System works with approximately 15% dynamic efficiency of the final extension level.
Technical Data - Vibro Crawler
| Engine | Hatz 3L41C - 48,8PS / 130Nm | |
| Tank Capacity | 60L | |
| Length | 2400mm | |
| Width/ Telescoped | 790 mm – 1200mm | |
| Height Transport | 1.400 mm | |
| Height Mast | 2.900 mm | |
| Weight | 2200kg (without accessories) | |
|
Experiments according to DIN |
Dynamic probing according to DIN EN ISO 22476-2 (DPM, DPH, DPSH-A & DPSH-B) |
|
|
Percussion core sounding and drillings according to DIN EN ISO 22475 ( RKS 30-80mm) |
||
|
Standard Penetration Test according to DIN EN ISO 22476-3 |
||
|
Cone Penetration Test according to DIN EN ISO 22476-1 |
Technical data - Vibro CPT Field Study
| System Weight | 2200 kg | |
| Pump Capacity | 135bar - 30l/min | |
| Feed Rate (static) | 0 ... 50 mm/s | |
| Vibro-Feed Rate (frequency) | 0 .. 50 Hz | |
| Vibro-Feed-Rate (amplitude) | 0 .. 2 mm | |
| Vibro-Feed-Rate typical | Vconst.: 20 mm/s Amplitude: 0,5 mm Frequency: 10Hz |
|
|
Data rate |
500 Hz in Cone 5000 Hz in ADWIN |
|
|
Data |
Peak pressure |
|
| Controller | PID-Controller with Precontrol | |
| CPT-Sensor | 5 cm² |
Operation/usage:
scientific projects: MARUM/University Bremen, working group Marine Engineering Geology
commercial projects: Uni Bremen Campus GmbH and Geo-Engineering.org GmbH
Property of: Uni Bremen Campus GmbH