Lifting structure at escape exit of security and protection lifesaving device

Abstract

The invention discloses a lifting structure at an escape exit of a security and protection lifesaving device. The lifting structure is composed of two sets of sliding plates, rails, drive shafts and a plurality of sets of drive grooves. Linear guide blocks are arranged at the bottoms of the sliding plates correspondingly and move in the rails. The multiple through drive grooves of the same structure are formed in the planes of the sliding plates and are of a curve-shaped structure. The drive shafts are matched with the drive grooves in a one-to-one correspondence mode. One ends of the drive shafts are fixedly connected with an opening and closing part. The drive shafts are further in slide fit with the drive grooves through bearings correspondingly. The lifting structure has high bearing capacity for the escape exit which is high in weight, extremely thick and bulky in shape, particularly suitable for escape exits of a horizontally-placed structure, the transmission stability and synchronism of the lifting structure are good, complete sealing can be achieved, a structure of the multiple sets of drive grooves and the multiple sets of drive shafts for simultaneous driving can be arranged on the plane of the same sliding plate according to different escape exit requirements, and opening and closing under all conditions can meet requirements for stability, synchronism and balanced sealing.

Description

technical field [0001] The invention belongs to the technical field of mechanical design and manufacture, in particular to the design and manufacture of a mechanical lifting structure, in particular to the lifting structure of an escape opening for a security lifesaving device. Background technique [0002] Due to safety considerations, the escape hatch of the security life-saving device adopts components with better explosion-proof performance. The components are usually thick, heavy, and difficult to open and close, and it is difficult to open and close manually. The use of mechanical devices for opening and closing must meet the requirements of small space for safety and life-saving devices, convenient opening and closing, and stable opening and closing. [0003] At present, conventional escape exits mainly adopt scissor-type lifting mechanism, rack and pinion straight-up and straight-down mechanism or screw nut four-rod drive to realize lifting, but these all have some d...

AI Technical Summary

Problems solved by technology

The scissor lift mechanism takes up a lot of space, has high requirements on the installation position, and is difficult to achieve sealing; the rack and pinion straight up and down mechanism has poor transmission stability and synchronization; the screw nut drive four-rod has high requirements on thread strength and low load capacity

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