Taw qhia
Kev tawg ntawm cov hlua hlau hlau yog ib qho tseem ceeb tshaj plaws hauv kev tsim khoom siv hluav taws xob. Kev nkag siab yuav ua li cas xam nws kom raug ua kom muaj kev nyab xeeb kev nqa khoom thiab ua raws li cov qauv kev lag luam xws li ISO 2408 thiab EN 12385.
Breaking Load yog dab tsi?
Breaking load, tseem hu ua yam tsawg kawg nkaus tawg quab yuam (MBF), yog qhov siab tshaj plaws quab yuam ib txoj hlua hlau tuaj yeem tiv taus ua ntej tsis ua haujlwm. Nws feem ntau qhia hauv kilonewtons (kN) lossis tonnes (t).
Cov ntsiab lus tseem ceeb cuam tshuam rau kev tawg Load
- Hlau Tensile Strength:Feem ntau ntawm 1570 N / mm² txog 2160 N / mm².
- Kev tsim kho hlua:Tus naj npawb ntawm cov hlua, xov hlau ntawm ib qho strand, thiab cov tub ntxhais hom cuam tshuam rau lub zog tawg.
- Fill Factor:Qhov piv ntawm metallic cross-sectional cheeb tsam rau thaj tsam circumscribed ntawm txoj hlua.
- Spinning Loss Factor:Cov nyiaj them rau qhov txo qis hauv lub zog vim qhov helical winding ntawm cov xov hlau.
Breaking Load Formula
Theoretical breaking load F tuaj yeem xam raws li:
F = K × d² × R₀ / 1000
Qhov twg:
- F= Yam tsawg kawg nkaus tawg load (kN)
- K= Empirical yam nyob ntawm txoj hlua siv (feem ntau 0.3–0.55)
- d= Nominal hlua txoj kab uas hla (mm)
- R₀= Nominal tensile zog ntawm cov xov hlau (N/mm²)
Tswv yim piv txwv
Rau 20mm txoj kab uas hla 6 × 36WS-IWRC steel hlau hlua nrog 1960 N / mm² qib:
F=0.40 × 20² × 1960 / 1000=313.6 kN (kwv yees 32 tonnes)
Kev xav txog kev nyab xeeb
Ib txwm siv qhov kev nyab xeeb (feem ntau 5: 1 rau kev nqa dav dav, mus txog 10: 1 rau cov neeg ua haujlwm nqa) thaum txiav txim siab txog kev txwv kev ua haujlwm (WLL).
Xaus
Kev suav cov khoom tawg yooj yim yog qhov tseem ceeb rau kev nyab xeeb rigging. Nco ntsoov xa mus rau cov chaw tsim khoom tshwj xeeb thiab cov qauv tsim nyog thaum txiav txim siab txoj hlua muaj peev xwm.
