一、防爆设备首先需要隔爆，而防爆电动葫芦外壳采用防爆材质，起升电机和运行电机也都是防爆的，可以隔绝火花等易燃防爆物质。
First, explosion-proof equipment needs to be flame-proof first, and explosion-proof electric hoist shell is made of explosion-proof material. Lifting motor and running motor are also explosion-proof, which can insulate flammable explosion-proof materials such as sparks.
二、防爆电动葫芦电气箱、手柄以及下吊钩都是防爆的，只是三级防爆电动葫芦为普通下钩，但是在吊钩滑轮出绳口处设有铜片，而四级防爆电动葫芦下钩换成不锈钢钩头。
2. Explosion-proof electric hoist electric box, handle and lower hook are explosion-proof, but the three-level explosion-proof electric hoist is ordinary lower hook, but there are copper sheets at the outlet of the hook pulley, while the four-level explosion-proof electric hoist lower hook is replaced by stainless steel hook head.
三、防爆电动葫芦采用防爆断火限位器，导绳器和跑车轮也是采用防爆材质（三级防爆为普通材质）。
3. Explosion-proof electric hoist adopts explosion-proof and fire-breaking limiter, and the guide rope and running wheel are also made of explosion-proof material (the third level explosion-proof material is common material).
每一个防爆零部件的成本都高于普通零部件，而防爆电动葫芦为了防爆性能稳定，更是在选材和设计上严格把关，保证产品品质。可见，防爆电动葫芦的确是贵的“有理”，并非胡乱要价。
The cost of each explosion-proof component is higher than that of ordinary component. In order to keep the explosion-proof performance, explosion-proof electric hoist is strictly controlled in material selection and design to ensure product quality. It can be seen that explosion-proof electric hoist is indeed expensive "reasonable", not arbitrary price.