13 th European Cave Rescue Meeting Baredine Cave, Istria, Croatia 14-17 November 2019 Croatian Mountain Rescue Service Cave Rescue Commission (CMRS CRC) Dinko Novosel, Luka Havliček, Tin Novosel, Marijan Sutlović, Darko Bakšić Counterweight systems - tests
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
-
13th European Cave Rescue MeetingBaredine Cave, Istria, Croatia
14-17 November 2019
Croatian Mountain Rescue Service
Cave Rescue Commission (CMRS CRC)
Dinko Novosel, Luka Havliček, Tin Novosel, Marijan Sutlović, Darko Bakšić
Counterweight systems - tests
-
- Anchors: System of three load-sharing anchors;
- Rope: 10,5 mm Tendon speleo (30 kN)
- Height: 6 m
- Dynamometer: Mecmesin AFTI (Advanced Force Torque Indicator), S-Beam Loadcell Cylindrical type 50 kN (50 measurements per sec.), EN ISO 376;
- Each test was made by 3 repetition;
- Software: Force Graph version 0.7.0.1. made by Ronald Železnjak.
- Counterweight : 100 kgf;- Controller: 80 kgf;- NEST stretcher with caver 100 kgf;- Total: 280 kgf
- Testing was conducted 7th November 2019
CMRS CRC – testing team: Dinko Novosel, Luka Havliček, Tin Novosel,
Marijan Sutlović, Darko Bakšić
-
Tested counterweight systems
Counterweightwith controller Diminishing Loop
Counterweightsclimbing on place
-
Counterweight with controller
0
50
100
150
200
250
300
350
400
0:0
0
0:3
0
1:0
0
1:3
0
2:0
0
2:3
0
3:0
0
3:3
0
4:0
0
4:3
0
5:0
0
5:3
0
6:0
0
Forc
e (
kgf)
Time (min)
CW test 3
Rescuer 1 (Cont.)climbing
Rescuer 2 (CW)climbing
Stretcherhauling
Rescuer 2 (CW)Stretcherreppeling
Rescuer 1 (Cont.)reppeling
-
Counterweight with controller
0
50
100
150
200
250
300
350
0:0
0
0:3
0
Forc
e (
kgf)
Time (sec)
Climbing and stretcher lowering
Rescuer 1(Contr.)
Rescuer 2(CW) Stretcher hauling
-
0
20
40
60
80
100
120
140
Forc
e (
kgf)
Climbing sequence
Contr.
Counterweight with controller
+ 35 %
- 25 %
- 50 %
0
20
40
60
80
100
120
140
Forc
e (
kgf)
Climbing sequence
CW
+ 25 %
- 25 %- 50 %
100 kgf
80 kgf
-
0
50
100
150
200
250
300
350
400
0:0
0
0:3
0
1:0
0
1:3
0
2:0
0
2:3
0
3:0
0
3:3
0
4:0
0
4:3
0
5:0
0
5:3
0
6:0
0
6:3
0
7:0
0
Forc
e (
kgf)
Time (min)
CWC test 3
Counterweight climbing on place
Rescuer 1 (Cont.)climbing
Rescuer 2 (CW)climbing
Stretcherhauling Rescuer 2 (CW)
Stretcherreppeling
Rescuer 1 (Cont.)reppeling
-
0
50
100
150
200
250
300
350
0:0
0
0:3
0
Forc
e (
kgf)
Time (sec)
Climbing and stretcher lowering
Rescuer 1(Contr.)
Rescuer 2(CW) Stretcher hauling
Counterweight climbing on place
-
Diminishing Loop
0
50
100
150
200
250
300
350
400
0:0
0
0:3
0
1:0
0
1:3
0
2:0
0
2:3
0
3:0
0
3:3
0
4:0
0
4:3
0
5:0
0
5:3
0
6:0
0
6:3
0
7:0
0
7:3
0
Forc
e (
kgf)
Time (min)
DL test 1
Rescuer 1 (CW)climbing
Rescuer 1 (CW)repelling
Stretcherhauling
Rescuer 2 (CW)Stretcherreppeling
-
0
50
100
150
200
250
300
350
400
0:0
0
0:3
0
1:0
0
1:3
0
2:0
0
2:3
0
3:0
0
3:3
0
4:0
0
4:3
0
5:0
0
5:3
0
6:0
0
Forc
e (
kgf)
Time (min)
DL test - rescuers comparison
Rescuer 2 Rescuer 1
Diminishing Loop
Stretcherhauling
Rescuer 2 (CW)Stretcherreppeling
Rescuer 1 (CW)Stretcherreppeling
?
-
Time
0
100
200
300
400
0:0
0
0:3
0
1:0
0
1:3
0
2:0
0
2:3
0
3:0
0
3:3
0
4:0
0
4:3
0
5:0
0
5:3
0
6:0
0
6:3
0
7:0
0
7:3
0
Forc
e (
kgf)
Time (min)
CW
0
100
200
300
400
0:0
0
0:3
0
1:0
0
1:3
0
2:0
0
2:3
0
3:0
0
3:3
0
4:0
0
4:3
0
5:0
0
5:3
0
6:0
0
6:3
0
7:0
0
7:3
0
Forc
e (
kgf)
Time (min)
CWC
0
100
200
300
400
0:0
0
0:3
0
1:0
0
1:3
0
2:0
0
2:3
0
3:0
0
3:3
0
4:0
0
4:3
0
5:0
0
5:3
0
6:0
0
6:3
0
7:0
0
7:3
0
Forc
e (
kgf)
Time (min)
DL
CW CWC DL
sec 22 30 89
% 100 136 405
Time
unit
Stretcher hauling
- Time for preparingand stretcher hulingfor CW and CWC after3 repetition hasimpruved for 40 %(better synchronizationof rescuers 1 and 2);
- Time for preparingand stretcher hulingfor DL after 3repetition is worse by20 % (fatigue of therescuer).
-
Discussion!
Related Documents
