Material fetching device with material rake structures

Abstract

The invention discloses a material fetching device with material rake structures. The material fetching device comprises a main beam, a sliding device, material rake bodies and drawing structures. The slide device is mounted on the main beam and can slide along the main beam in a left-right reciprocating manner under the effect of a driving device, the material rake bodies are connected onto the slide device via a left hinge structure and a right hinge structure in such a manner that the material rake bodies can rotate around hinged shafts, and the drawing structures are arranged among the material rake bodies and the slide device and can drive the material rake bodies to rotate; two contact spherical surfaces are further fixedly arranged at the hinge structures, arc-shaped surfaces of the contact spherical surfaces face the ends of the hinged shafts and are butted to the ends of the hinged shafts, the contact spherical surface which corresponds to the left hinge structure is arranged at the right end of the left hinge structure, and the contact spherical surface which corresponds to the right hinge structure is arranged at the left end of the right hinge structure. The material rake bodies slightly deform under the effect of rightward resistance when moving leftwards, a small gap is formed between the left hinged shaft and the corresponding contact spherical surface, the right hinged shaft is tightly butted to the corresponding contact spherical surface, accordingly, the resistance can be transmitted to the slide device, and vice versa. The material fetching device has the advantages that stress on the material rake bodies can be improved, accordingly, the fatigue resistance of the material rake bodies can be enhanced, and the service lives of the material rake bodies can be prolonged.

Description

technical field [0001] The invention relates to a material retrieving device used for material retrieving operations, in particular to a material reclaiming device with a rake structure. Background technique [0002] At present, the conventional material rake device is a plane triangular frame, and then welded on the main frame by steel reinforcement rods and rake teeth, or use a steel wire rope as an auxiliary structure of the frame to scrape materials. This kind of planar structure has poor rigidity. When the rake is enlarged, the self-weight of the rake will increase, and the deformation of the rake will be large. The deformation of the rake will cause the movement to be unstable, and finally cause the vibration of the whole machine. In addition, the rake teeth are connected to the main frame by welding, which is not easy to replace. [0003] In order to solve the above problems, Chinese patent document CN101973462A discloses a scraper reclaimer double-layer steel truss...

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is that the three-dimensional material rake in the prior art is prone to fatigue damage and has a short service life; furthermore, it provides a high fatigue resistance and durable material reclaiming device with a material rake structure

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