The invention discloses a dustproof heavy-duty trundle. The trundle comprises a fixing base and a ball bearing annular piece arranged below the fixing base. The ball bearing annular piece and the fixing base are fixed through a rivet. A first annular ball is arranged on the ball bearing annular piece. A second annular ball is arranged below the fixing base. A rotating ring is arranged between the first ball and the second ball. The portion between the edge of the rotating ring and the lower portion of the fixing base is sleeved with a dustproof ring. The two sides of the front end of the rotating ring extend downwards to be provided with vertical supporting plates respectively. A solid roller is arranged between the two vertical supporting plates. In this way, according to the dustproof heavy-duty trundle, the rotating ring rotates under the supporting of the first roller and the second roller, steering is flexible, friction force is small, the bearing capacity is strong, the second ball is not likely to be polluted by dust under the protection of the dustproof ring, cleanliness is high, and durability is good.
Dustproof heavy-duty trundle
2015-11-18
Patent
Electronic Resource
English
IPC: | B60B VEHICLE WHEELS , Räder für Fahrzeuge |
Trundle, installation method of trundle and application structure of trundle
European Patent Office | 2021
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