BR-LSZ type multifunctional bolt group connection comprehensive experimental platform

Overview:
This experimental platform is a visual experimental equipment that is closely integrated with the teaching content of bolt group connection. It can complete the testing and analysis of stress and deformation of each bolt in bolt group connection, and can conduct simulation experiments. It also has two experimental demonstration functions: tooth root bending stress testing experiment and equal strength cantilever beam bending stress testing experiment. The measurement data is stable and has good repeatability. It is equipped with a self-developed high-precision 12 channel static strain tester, It is an ideal basic teaching experimental equipment so far.

Function and features:
1. In addition to conducting bolt group connection experiments, this experimental platform can also be used to complete tooth root bending stress testing experiments, equal strength cantilever beam bending stress testing experiments, and resistance strain gauge sensitivity coefficient measurement experiments.
2. Advanced testing methods: A new high-performance static resistance strain gauge is adopted, which can be manually, automatically, and computer-controlled to zero. The measurement data is stable and has good repeatability. It is equipped with RS232 communication port and computer communication, and the experimental results are automatically output.
3. Use professional software to collect and analyze data, automatically draw measured and simulated curves. When not equipped with a computer, the measured data can be displayed on the LCD display screen of the static resistance strain gauge control panel, which can be manually recorded and the experimental data curve can be manually drawn.
4. The stable performance of the tested bolts is guaranteed by our company's long-term accumulated manufacturing process and experience.
5. The experimental platform has a floor standing structure consisting of a workbench and a box, equipped with adjustable anchor bolts and movable wheels. During installation, only the anchor bolts and nuts need to be adjusted and locked; The activity wheels can be flexibly shifted, making it easy for the laboratory to adjust the layout.
6. The bolt group experiment on this experimental platform can be completed in 3-5 minutes for a group of students. After the strain gauge is first connected and zeroed, the next group of students can proceed with the experiment without the need for repeated zeroing.

Teaching experiment projects and content:
1. Experiment on bolt group connection characteristics;
2. Involute tooth root stress testing experiment;
3. Equal strength cantilever beam bending stress testing experiment;
4. Sensitivity coefficient measurement experiment of resistance strain gauges.

Main configurations and technical parameters:
The diameter of the middle section of 10 tested bolts φ 6.5mm threaded M10 bolt at both ends, material 40Cr
One tooth profile plate being tested, z=32 m=16 mm
One beam of equal strength tested
One high-precision static resistance strain gauge with 12 measurement channels
Measurement range 0 ± 30000 με Zero point imb Zero point imbalance ± 10000 με
Basic error ± 0.2% FS ± 2 word resolution 1 με
Zero drift ± 2 με/ 4 hours ± 0.5 με/ ℃
Automatic testing measures less than 2 seconds per channel
Measurement methods: 1/4 bridge, half bridge, full bridge
Resistance strain gauge resistance value R=120 Ω Sensitivity coefficient K=2.20
Weights 4 pieces, 1kg two pieces, 0.5kg two pieces
1 dedicated software CD
External dimensions 580 × three hundred and twenty × 1005mm
1 instruction manual for the experimental bench