Telescopic device for belt telescopic machine and using method of telescopic device

Abstract

The invention discloses a telescopic device for a belt telescopic conveyor and a using method thereof.The telescopic device comprises a main box body, the main box body comprises a first main box body, first hard rails are fixedly connected to the inner walls of the two sides of the first main box body correspondingly, and helical racks are fixedly connected to the upper portions of the first hard rails correspondingly; and an inner cavity of the first main box is sleeved with at least one second box body through a helical rack and the first hard rails, the second box body comprises a second box body, the inner walls of the two sides of the second box body are fixedly connected with second hard rails, and an inner cavity of the second box body is sleeved with a third box body through second hard rails. The telescopic device is easy to install, long in service life, suitable for general popularization and application, high in stability, high in safety, high in running speed, stable in running and suitable for high-inclination belt conveying occasions, and safety accidents are not prone to occurring.

Description

technical field [0001] The invention relates to the technical field of transmission, in particular to a telescopic device for a belt telescopic machine and a usage method thereof. Background technique [0002] The telescopic belt conveyor adds a telescopic mechanism to the ordinary belt conveyor, so that the belt conveyor can freely expand and contract in the length direction. Users can adjust the button according to their own requirements and control the length of the conveyor at any time. On models equipped with automatic lifting devices, the user can also control the height of the conveyor end at any time. Telescopic belt conveyors are mainly used in vehicle loading and unloading and material transmission systems with telescopic requirements. [0003] The belt telescopic machine is widely used in the field of logistics and loading. It basically adopts synchronous toothed belt or belt to drive the telescopic structure transmission. Its structure is suitable for parallel ...

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Problems solved by technology

[0003] The belt telescopic machine is widely used in the field of logistics and loading. It basically adopts synchronous toothed belt or belt to drive the telescopic structure transmission. Its structure is suitable for parallel transmission. The structure is simple and the processing accuracy is not high. Stable and easy to damage, let alone be used in large-slope transmission, once the belt breaks, there will be safety hazards

Racks and gears are also used for transmission, but the structure on the market can only stretch one belt, and the scope of application is small

[0004] Chinese Patent Publication No. CN213111112U discloses a belt telescopic machine capable of automatic adjustment, which consists of a fixed frame, a rotating drum, a driven wheel, a rack, a telescopic frame, a fixed plate, a driving device, a second motor, a driving gear, a rotating rod, Composed of driving gears, driven gears, driven rollers and other structures, it realizes automatic adjustment, improves the efficiency of loading and unloading goods, and ensures the life, health and safety of staff; but this equipment is only suitable for parallel transmission, simple structure, and easy processing The accuracy requirement is not high, it is easy to cause the transmission to be unstable and easy to be damaged, and it cannot be used in large-slope transmission

[0005] Chinese Patent Publication No. CN210259929U discloses a belt telescopic mechanism, which is composed of a fixed roller mechanism, a belt, a roller, a sliding roller mechanism, a base, a slide rail, a guide wheel, a rack, a gear, a block, and a return spring structure. Although the structure adopts rack and pinion transmission, it is obvious that only one belt can be stretched and extended, so the application range is small and the practicability is low

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