JCZ型长行程电磁铁制动器应用于起重机的起升机构,具有行程大、制动快、很少有剩磁现象和较安全等优点,但也存在着冲击力大和寿命较短的缺点。从实际使用中看,最明显的是电磁铁线圈烧损比较严重。 通过对JCZ型制动器进行长期地跟踪调查,查明烧毁线圈的原因有如下几点: 1.制动器线圈骨架承重面过于狭小。 2.制动器线圈结构强度较低。 JCZ long stroke electromagnet brakes applied to the lifting mechanism of the crane have the advantages of large stroke, fast braking, little residual magnetism and more safety, but also have the disadvantages of large impact force and short life span. From the actual use of view, the most obvious is the electromagnet coil burning more serious. Through the JCZ-type brakes for long-term follow-up investigation to find out the reasons for burning coils are the following: 1. Brake coil bobbin load-bearing surface is too narrow. 2. Brake coil structure lower strength.