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Patent Searching and Data


Title:
STEERING OAR STRUCTURE OF DREDGER
Document Type and Number:
WIPO Patent Application WO/2019/019011
Kind Code:
A1
Abstract:
A steering oar structure of a dredger, comprising a gearbox (1) connected to a dredger body, and a hub (2) rotatably provided on the gearbox (1). At least one first cutter (3) is provided at one end of the gearbox (1) and approximate to the edge of the hub (2); one end of the first cutter (3) is fixed to the hub (2), and the other end is provided with three blades, i.e., a first blade (31), a second blade (32), and a third blade (33); the first blade (31) is located on an end portion of the first cutter (3) and in a convex arc shape; the second blade (32) and the third blade (33) are respectively located on two sides of the first cutter (3) and approximate to the first blade (31); multiple vanes (20) are provided on an outer periphery of the hub (2); each of the vanes (20) comprises a vane root segment (25) and a vane tip segment (26); a convex arc potion (251) is formed on an upper surface of the vane root segment (25); and an upper convex arc potion (261) is formed on an upper surface of the vane tip segment (26). Hence, by providing the cutter (3) having three blades at a gap between the steering oar (2) and the gearbox (1), an object wound on the steering oar can be cut off in the case of arbitrary rotation of the steering oar, and a cavitation erosion problem can also be solved.

Inventors:
CHEN QIUHUA (CN)
Application Number:
CN2017/094286
Publication Date:
January 31, 2019
Filing Date:
July 25, 2017
Export Citation:
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Assignee:
CHEN QIUHUA (CN)
International Classes:
B63H1/26; B63H5/16
Foreign References:
CN204846334U2015-12-09
CN204236757U2015-04-01
CN104176221A2014-12-03
AU2015243087A12016-05-05
RU2572765C12016-01-20
CN205661638U2016-10-26
Attorney, Agent or Firm:
SBZL IP LAW OFFICE (CN)
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