Angle problems of webbing sling during lifting

The angle problem is involved in the lifting process of the two webbing slings, and this angle cannot be avoided.

Because during the lifting process, it is necessary to consider fixing two webbing slings from both ends, while lifting only one lifting point, the lifting angle is unavoidable.

In the lifting method we described earlier, there are two ways to fix the lifting belts, namely the straight lifting method and the knot method.

It is the same as the lifting and fixing method of a lifting strap. Only the two webbing slings are stressed, and the lifting angles are different.

The two lifting straps are lifted at an angle difference of 45° and 45°-60°

Straight lifting method: The 45° tensile force is 1.4 times the normal breaking load, that is, the maximum carrying capacity of two one-ton lifting belts is 1.4 tons;

The 45°-60° tensile force is 1.0 times the normal breaking load, that is, the maximum carrying capacity of two one-ton webbing sling is 1.0 tons;

Noose method: 45° tensile force is 1.12 times the normal breaking load, that is, the maximum load capacity of two one-ton lifting straps is 1.12 tons;

The 45°-60° tensile force is 0.8 times the normal breaking load, that is, the maximum carrying capacity of two one-ton lifting belts is 0.8 tons;

	single sling max working load limit (Kg)
round slings
webbing slings
lifting belts assembly
WLL	1.0	0.8	2.0	1.4	1.0	0.7	0.5
1000kg	1000	800	2000	1400	1000	700	500
2000kg	2000	1600	4000	2800	2000	1400	1000
3000kg	3000	2400	6000	4200	3000	2100	1500
4000kg	4000	3200	8000	5600	4000	2800	2000
5000kg	5000	4000	10000	7000	5000	3500	2500
6000kg	6000	4800	12000	8400	6000	4200	3000
8000kg	8000	6400	16000	11200	8000	5600	4000
10000kg	10000	8000	20000	14000	10000	7000	5000
12000kg	12000	9600	24000	16800	12000	8400	6000
15000kg	15000	12000	30000	21000	15000	10500	7500
20000kg	20000	16000	40000	28000	20000	14000	10000
25000kg	25000	20000	50000	35000	25000	17500	12500
30000kg	30000	24000	60000	42000	30000	21000	15000
40000kg	40000	32000	80000	56000	40000	28000	20000
50000kg	50000	40000	100000	70000	50000	35000	25000
60000kg	60000	48000	120000	84000	60000	42000	30000
80000kg	80000	64000	160000	112000	80000	56000	40000
100000kg	100000	80000	200000	140000	100000	70000	50000
200000kg	200000	160000	400000	280000	200000	140000	100000
300000kg	300000	240000	600000	420000	300000	210000	150000
400000kg	400000	320000	800000	560000	400000	280000	200000
500000kg	500000	400000	1000000	700000	500000	350000	250000
600000kg	600000	480000	1200000	840000	600000	420000	300000
700000kg	700000	560000	1400000	980000	700000	490000	350000
800000kg	800000	640000	1600000	1120000	800000	560000	400000
900000kg	900000	720000	1800000	1260000	900000	630000	450000
1000000kg	1000000	800000	2000000	1400000	1000000	700000	500000

	2 legs max working load limit (Kg)				4 legs max working load limit (Kg)
webbing sling
round sling
lifting belts assembly
WLL	1.4	1.12	1.0	0.8	2.1	1.5
1000kg	1400	1120	1000	800	2100	1500
2000kg	2800	2240	2000	1600	4200	3000
3000kg	4200	3360	3000	2400	6300	4500
4000kg	5600	4480	4000	3200	8400	6000
5000kg	7000	5600	5000	4000	10500	7500
6000kg	8400	6720	6000	4800	12600	9000
8000kg	11200	8960	8000	6400	16800	12000
10000kg	14000	11200	10000	8000	21000	15000
12000kg	16800	13440	12000	9600	25200	18000
15000kg	21000	16800	15000	12000	31500	22500
20000kg	28000	22400	20000	16000	42000	30000
25000kg	35000	28000	25000	20000	52500	37500
30000kg	42000	33600	30000	24000	63000	45000
40000kg	56000	44800	40000	32000
50000kg	70000	56000	50000	40000
60000kg	84000	67200	60000	48000
80000kg	112000	89600	80000	64000
140000	140000	112000	100000	80000
200000kg	280000	224000	200000	160000
300000kg	420000	336000	300000	240000
400000kg	560000	448000	400000	320000
500000kg	700000	560000	500000	400000
600000kg	840000	672000	600000	480000
700000kg	980000	784000	700000	560000
800000kg	1120000	896000	800000	640000
900000kg	1260000	1008000	900000	720000
1000000kg	1400000	1120000	1000000	800000

Note: M = coefficient of symmetrical load, installation tolerance of lifting belt or lifting belt parts: 6 ° in the vertical direction.

The maximum working load of a hoisting belt has a great relationship with the hoisting method. Different hoisting angles have a different maximum of hoisting working loads.