Staggered tooth rack
A technology of racks and staggered teeth, applied in the field of transmission racks, can solve problems such as insufficient mechanical properties of symmetrical rack structures, and achieve the effects of increasing equivalent cross-sectional area, increasing strength, and saving raw materials
Inactive Publication Date: 2015-07-29
YANTAI RAFFLES SHIPYARD +3
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Problems solved by technology
[0003] The purpose of the present invention is to solve the problem of insufficient mechanical properties of the existing symmetrical rack structure used for jack-up platform leg racks, and to provide a misaligned rack, which has an asymmetrical rack structure, Improve the mechanical properties of the rack structure by increasing the equivalent cross-sectional area of the rack
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[0032] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments to further understand the purpose, solution and effect of the present invention, but it is not intended to limit the scope of protection of the appended claims of the present invention.
[0033] In order to compare and illustrate the staggered tooth rack of the present invention, a brief description is now given to the symmetrical rack in the prior art. Such as figure 1 As shown, the symmetrical rack 10 in the prior art includes a first tooth row 11 , a second tooth row 12 and a body portion 13 . The first tooth row 11 and the second tooth row 12 have the same tooth profile and are located on the left and right sides of the main body portion 13 in an axisymmetric manner. Specifically, the first row of teeth 11 includes a dedendum 111 and a dedendum 112 , and the second row of teeth 12 includes a dedendum 121 and a dede...
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The invention discloses a staggered tooth rack. The staggered tooth rack comprises a body part, a first tooth row and a second tooth row, wherein the first tooth row and the second tooth row have same tooth profiles, the first tooth row and the second tooth row are relatively located at the two sides of the body part, and the first tooth row and the second tooth row respectively comprise a tooth root part and a tooth top part; the tooth root part of the first tooth row and the tooth root part of the second tooth row are asymmetric corresponding to the body part, and the tooth top part of the first tooth row and the tooth top part of the second tooth row are asymmetric corresponding to the body part. By adopting the staggered tooth rack provided by the invention, the representative section area can be improved by symmetric racks in the prior art, and the intensity of the racks can be improved, and raw materials can be saved by using the racks with the same intensities.
Description
technical field [0001] The invention relates to a transmission rack, in particular to a rack with an asymmetric tooth shape and a staggered rack structure, which can be applied to the legs of a self-elevating platform. Background technique [0002] At present, in the design of jack-up platform leg racks, racks with symmetrical structures are generally used. Most of the domestic platform manufacturers use imported racks, which are expensive and have a long delivery cycle. Some manufacturers also use special steel plates to cut them by themselves. Generally, the thickness of the raw steel plate used to manufacture the rack will reach more than 120mm, and the price is very expensive. Conventionally designed symmetrical racks, after cutting and forming, in order to obtain a larger equivalent section, the mechanical performance index is relatively low. Contents of the invention [0003] The purpose of the present invention is to solve the problem of insufficient mechanical pr...
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IPC IPC(8): F16H55/26
CPCF16H55/26
Inventor 韩华伟李磊史丰智王凤梅石延雪
Owner YANTAI RAFFLES SHIPYARD