The (torque limiter) acts as overload protection by relying on the preset torque value. When the torque transmitted between the drive side and the load side of the transmission system exceeds the set value, the torque limiter (torque limiter) slips or disconnects the protection Machinery and equipment. Therefore, accurately calculating the torque range of the torque limiter and the torque value to be set is the key to the correct selection and use of the torque limiter. If the torque setting is too small, the torque limiter will be disengaged before the overload occurs, and the power cannot be transmitted normally. If the torque setting value is too large, the torque limiter will not disengage when an overload occurs, which may cause damage to the machinery and equipment.

Method one:

In the case of knowing the operating torque parameters of the drive train, you can select the torque range and torque setting value as shown in the following figure. The torque curve during equipment operation is fluctuating as shown in ①, and the maximum torque value of equipment operation can reach ② The torque limiter torque setting value should be set at the torque value shown in ③, which is greater than 30% of the maximum operating torque of the equipment ②.

        (1) The torque curve diagram of the equipment;

　　 (2) The maximum torque of the equipment;

　　 (3) The slip torque set by the torque limiter

　　   X is the safety margin before (2) and (3).

Method Two:

In the case of knowing the following parameters of the drive train, the parameters can be substituted into the formula for calculation.

　　   1, torque

　　   (1) When calculating according to the motor and load

Light load, low frequency use occasions, calculated according to the formula (1) (2),

Find the torque according to the motor and load, and then multiply it by the safety factor.

During operation, the safety factor is also different due to the impact load of different drive trains. As shown in Table 1.

Table 1

The torque value calculated in this way can be used as a reference for the (torque limiter) torque range and torque setting value selection. Since the operating conditions of different transmission systems are quite different, if you cannot accurately determine the operating torque parameters, you can consult Shanghai BMOOM.