Rake tooth structure

Abstract

The invention relates to excavation devices of railway ballast cleaning machines, in particular to a rake tooth structure which is capable of reducing the complete machine using cost and is high in performance-cost ratio. The rake tooth structure comprises a tooth head, a welding layer, a tooth body, an elastic ring and a fixing ring. The tooth head and the tooth body are fixedly connected into a whole through the welding layer, the elastic ring is elastically pressed at the tail of the tooth body through the fixing ring, and the elastic ring and the tooth body are in clearance fit both axially and radially. Under the premise that the cost is not increased, an abrasion resistant main body and the tooth head used for bearing main force are distinguished according to the force bearing condition of a rake tooth, and selected materials can be distinguished during production manufacturing of the rake tooth, so that the higher performance-cost ratio of rake tooth elements is achieved; meanwhile, through a tail connecting structure, the rake tooth is detached more conveniently, and the elastic ring and the tooth body are in clearance fit; and in the operation process of the rake tooth, because the tooth body is mounted in a floatable mode, the tooth body can rotate on the axis of the elastic ring under the operation force effect, accordingly, the tooth head can be uniformly abraded, and an abrasion resistant material on the tooth head is fully consumed.

Description

technical field [0001] The invention relates to an excavating device for a railway ballast cleaning machine, in particular to a rake tooth structure capable of reducing the use cost of the whole machine and having a high performance-price ratio. Background technique [0002] The rake teeth in the excavation device of the railway ballast cleaning machine, because they are in direct contact with the excavated ballast, need to withstand large impact and vibration loads and excavation forces during operation, especially when working on a hardened road bed. The digging force will increase several times. In the design process, although the overall structure of alloy steel rake teeth has been adopted, due to the consideration of the production cost of the whole machine, the service life of its material is often less than the overall use of other parts of the whole machine The service life of the rake teeth will cause wear and deformation of the head of the rake teeth earlier. When ...

AI Technical Summary

Problems solved by technology

[0002] The rake teeth in the excavation device of the railway ballast cleaning machine, because they are in direct contact with the excavated ballast, need to withstand large impact and vibration loads and excavation forces during operation, especially when working on a hardened road bed. The digging force will increase several times. In the design process, although the overall structure of alloy steel rake teeth has been adopted, due to the consideration of the production cost of the whole machine, the service life of its material is often less than the overall use of other parts of the whole machine The service life of the rake teeth will cause wear and deformation of the head of the rake teeth earlier. When the usage limit is exceeded, it needs to be replaced in advance. The rake teeth are basic wearing parts, and the consumption demand is relatively large. When disassembling, it is very inconvenient, time-consuming and labor-intensive

Images