对于起重设备,一方面由于不能使生产过程受到妨害以及安全的原故,要求有高度的可靠性和坚固的结构型式;另一方面又不希望重量过大,因为不必要的自重,将使驱动机构增大、能消耗增加、起重机轨道上的负载增高、厂房结构也需要采用重型的柱子和基础等。因此势必要在重型和轻型结构之间去找一个适中的方案。 For lifting equipment, on the one hand because of the production process can not be hindered and safety reasons, requires a high degree of reliability and solid structure type; the other hand do not want too much weight, because of unnecessary weight, will drive Increased institutions can increase consumption, increased load on the crane track, plant structure also need to use heavy-duty columns and foundations. It is therefore necessary to find a moderate solution between heavy and light structures.