Lift -cabin door reset spring

The utility model belongs to the assembly part field specifically is a lift -cabin door reset spring. A lift -cabin door reset spring, includes the spring body, the spring body is encircleed by the spring wire spiral and forms, respectively sets up a dog at the both ends of spring body, the plane that the dog circle becomes is perpendicular with the extending direction of spring body, at the steelwire that the constitutes the dog a plurality of lantern rings of suit on the surface, a stand pipe is respectively connected to last round spring wire inboard at spring body both ends, the diameterof stand pipe is less than the internal diameter of spring body, the stand pipe at spring body both ends can bump when the spring contracts to the minimum length together, at this volumetric shrinkageof spring during to the minimum length, the spring wire that the spring body is two rings adjacent closely suffers together. This kind of lift -cabin door reset spring security performance is good, operates steadily. 本实用新型属于装配