Reamer head for cutter suction device with graded cutter teeth

Abstract

The invention discloses a reamer head for a cutter suction device with graded cutter teeth. The reamer head comprises a lower disc, reamer arms, cutter teeth, an upper disc, an upper cover and a screw thread. The lower parts of the reamer arms are welded with the lower disc, and the upper parts of the reamer arms are welded with the upper disc; the middle upper part of the upper disc is welded with the upper cover, and five to six reamer arms are arranged on the reamer head; five to eight cutter teeth are arranged on each reamer arm; the screw thread is processed in the upper disc. The reamer head has a biggest feature that the conventional method of matching the cutter teeth in one specification for one reamer head is broken by adopting an optimum design method of decreasing the size of the cutter teeth from top to bottom in sequence according to the stress condition of the reamer cutter during rotary working, and the reamer head has the advantages of reasonable design, high efficiency and wide practicability.

Description

technical field [0001] The invention relates to a reamer head, in particular to a reamer head for a gradually changing cutter suction device. Background technique [0002] Cutter suction dredger is the most frequently used dredger for excavating and transporting soil. It can dig deep, widen and clear the original channel and port, excavate new channel and port, and can also be used to dig canals , Dredging shipping, ship locks and foundation grooves of other hydraulic structures, etc. With the increasing development of water transportation, the cutter suction dredger has made great progress, making it an important engineering ship. [0003] The cutter suction device is an important part of the cutter suction dredger. It is mainly composed of cutter head, protective cover, rear cover, suction pipe, positioning shaft, mud pump, hydraulic motor, reducer and machine base. The head consists of a reamer arm, an upper disc, a lower disc and teeth. The work of the cutter suction ...

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Problems solved by technology

[0004] In the prior art, the cutter teeth on the reamer head used for the suction device have one of the biggest characteristics, that is, one reamer head matches a standard cutter tooth, which is more convenient in production and installation; however, according to the rotation of the reamer head The force analysis at the time found that this design is unreasonable, because the force on the top near the reamer head is relatively large, while the force on the bottom of the reamer head is small; if the cutter teeth are selected according to the maximum force, It is bound to cause the selection of too large cutter teeth, resulting in an increase in the material and cost of the material

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