CN203756919U - Staggered tooth rack for self-elevating platform pile leg - Google Patents
Staggered tooth rack for self-elevating platform pile leg Download PDFInfo
- Publication number
- CN203756919U CN203756919U CN201420046947.1U CN201420046947U CN203756919U CN 203756919 U CN203756919 U CN 203756919U CN 201420046947 U CN201420046947 U CN 201420046947U CN 203756919 U CN203756919 U CN 203756919U
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- Prior art keywords
- tooth
- denture
- rack
- body portion
- tooth bar
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- 239000002994 raw material Substances 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The utility model discloses a staggered tooth rack for a self-elevating platform pile leg. The staggered tooth rack comprises a body portion, a first tooth row and a second tooth row, the tooth shape of the first tooth row is as same as that of the second tooth row, the first tooth row and the second tooth row are oppositely positioned on two sides of the body portion and respectively comprise a tooth root and a tooth top, the tooth roots of the first tooth row and the second tooth row are asymmetrical relative to the body portion, and the tooth tops of the first tooth row and the second tooth row are asymmetrical relative to the body portion. Compared with a symmetrical rack in the prior art, the staggered tooth rack has the advantages that equivalent section area can be increased, so that the strength of the rack is improved, and raw materials can be saved by the aid of the rack with the same strength.
Description
Technical field
The utility model relates to a kind of driving rack, and the concrete asymmetrical tooth bar with side set rack structure of a kind of profile of tooth that refers to, can be applied on jack-up unit spud leg.
Background technique
At present, in the design of jack-up unit spud leg tooth bar, generally adopt the tooth bar of symplex structure.State inner platform manufacturing firm, most of import tooth bar that uses, price is high, lead time is long, also has part manufacturing firm to adopt steel plate special to cut voluntarily.Be generally used for more than the raw steel thickness of manufacturing tooth bar can reach 120mm, price is very expensive.The Symmetrical rack of conventional design, after excision forming, for obtaining larger representative section, mechanical performance index is on the low side.
Model utility content
The purpose of this utility model is the problem that solves the existing Symmetrical rack structural mechanical property deficiency for jack-up unit spud leg tooth bar, a kind of side set tooth bar is provided, this side set tooth bar has asymmetric spline structure, improves the mechanical property of rack structure by improving the representative section area of tooth bar.
To achieve these goals, side set tooth bar for jack-up unit spud leg of the present utility model, comprise main body portion, the first denture and the second denture, described the first denture and described the second denture have identical profile of tooth, described the first denture both sides of being positioned at described main body portion relative to described the second denture, described the first denture and described the second denture comprise respectively tooth root portion and tooth top portion, wherein, the tooth root portion of described the first denture described main body portion relative to the tooth root portion of described the second denture is asymmetric, the tooth top portion of described the first denture described main body portion relative to the tooth top portion of described the second denture is asymmetric.
The above-mentioned side set tooth bar for jack-up unit spud leg, wherein, the profile of tooth of the profile of tooth of described the first denture and described the second denture is straight-tooth.
The above-mentioned side set tooth bar for jack-up unit spud leg, wherein, the tooth root portion of described the first denture is corresponding to the tooth root portion of described the second denture 0.4 to 0.5 the adjacent teeth distance that staggers.
Beneficial functional of the present utility model is, adopts side set tooth bar of the present utility model can improve representative section area with respect to the Symmetrical rack of prior art, thereby has improved the intensity of tooth bar; The tooth bar of same intensity can save material.
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail, but not as to restriction of the present utility model.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing Symmetrical rack;
Fig. 2 is the first embodiment's of side set tooth bar of the present utility model structural representation;
Fig. 3 is the structural representation of the first embodiment of side set tooth bar of the present utility model while having identical width/intensity with the Symmetrical rack shown in Fig. 1;
Fig. 4 is the second embodiment's of side set tooth bar of the present utility model structural representation;
Fig. 5 is the 3rd embodiment's of side set tooth bar of the present utility model structural representation.
Wherein, reference character
10 Symmetrical racks
11 first dentures
111 tooth top portions
112 tooth root portions
12 second dentures
121 tooth top portions
122 tooth root portions
13 main body portioies
20 side set tooth bars
21 first dentures
211 tooth top portions
212 tooth root portions
22 second dentures
221 tooth top portions
222 tooth root portions
23 main body portioies
Embodiment
Below in conjunction with the drawings and specific embodiments, technical solutions of the utility model being described in detail, further to understand the purpose of this utility model, scheme and effect, but is not the restriction as the utility model claims protection domain.
For comparative illustration side set tooth bar of the present utility model, now the Symmetrical rack of prior art is done to brief description.As shown in Figure 1, in prior art, Symmetrical rack 10 comprises the first denture 11, the second denture 12 and main body portion 13.The first denture 11 and the second denture 12 have identical profile of tooth and lay respectively at axisymmetricly the left and right sides of described main body portion 13.Particularly, the first denture 11 comprises that tooth top portion 111 and tooth root portion 112, the second dentures 12 comprise tooth top portion 121 and tooth root portion 122.Wherein, the tooth top portion 121 of the tooth top portion 111 of the first denture 11 and the second denture 12 is symmetrical with respect to main body portion 13, and the tooth root portion 122 of the tooth root portion 112 of the first denture 11 and the second denture 12 is symmetrical with respect to main body portion 13.
As shown in Figure 2, side set tooth bar 20 of the present utility model comprises the first denture 21, the second denture 22 and main body portion 23, the first denture 21 has identical profile of tooth with the second denture 22 and lays respectively at the relative both sides of described main body portion 23, wherein, the profile of tooth of the profile of tooth of the first denture 21 and the second denture 22 is asymmetric.
Specifically, the first denture 21 comprises tooth top portion 211 and tooth root portion 212, the second denture 22 comprises tooth top portion 221 and tooth root portion 222, the tooth top portion 221 of the tooth top portion 211 of the first denture 21 and the second denture 22 is asymmetric with respect to main body portion 23, accordingly, the tooth root portion 222 of the tooth root portion 212 of the first denture 21 and the second denture 22 is asymmetric with respect to main body portion 23, and tooth root and the tooth top in the side set tooth bar 20 same cross sections, both sides after having cut are non-symmetry structure.
Adopt side set tooth bar technology of the present utility model, can under the prerequisite that expends same steel plate consumption, improve the representative section area of tooth bar; Or reduce steel plate consumption under the prerequisite that guarantees same representative section area.
The Symmetrical rack that spud leg was adopted of existing SuperM2 jack-up unit of take is example, and the profile of tooth of Symmetrical rack 10 can adopt straight-tooth.See as shown in Figure 1, the rack-plate thickness of Symmetrical rack 10 is 120mm, the two symmetrical tooth tooth tops of the first denture 11 of rack-plate and the second denture 12 are 746.20mm apart from d1, the two symmetrical tooth tooth roots of the first denture 11 and the second denture 12 are 438.20mm apart from d2, two tooth tooth tops adjacent on each denture equate apart from L2 with two adjacent tooth tooth roots apart from L1, and L1=L2=251.333mm, representative section is positioned at the weakness of the first denture 11 and the second denture 12 distance, i.e. the first denture 11 and the second denture 12 with respect to the position between two tooth root portions of main body portion 13 symmetries, A place as shown in Figure 1.The area S0 of representative section A is calculated as follows:
S0＝438.20×120＝52584mm
2
For convenience of comparing, as shown in Figure 2, the dimensional parameters of side set tooth bar 20 of the present utility model is identical with the Symmetrical rack 10 shown in Fig. 1, its difference is, relative the second denture 22 displacements of the first denture 21 reach 0.5 adjacent teeth distance, the i.e. tooth top portion 221 of corresponding second denture 22 of tooth root portion 212 of tooth root portion 222, the first dentures 21 of corresponding the second denture 22 of the tooth top portion 211 of the first denture 21.The serrated edge E1 of the first denture 21 parallels with the serrated edge E2 of the second denture 22, and representative section B is for as shown in Figure 2, and the area S1 of representative section B is calculated as follows:
S1＝(746.2－438.2)×120/2＝71064(mm
2)
With respect to the Symmetrical rack 10 of same widths, its equivalent area improves ratio F1 and is:
F1=(71064-52584)/52584=35.1% consults Fig. 3, and in Fig. 3, solid line represents the structural representation of the side set tooth bar of and side set 0.5 adjacent teeth distance identical with the Symmetrical rack width shown in Fig. 1; Structural representation when dotted line represents that the representative section area with the Symmetrical rack shown in Fig. 1 is identical.
While considering for tooth bar intensity aspect, the equivalent cross-sectional area of its smallest cross-sectional can react its intensity intuitively.Side set tooth bar of the present utility model has increased the area of representative section.Wherein, side set tooth bar when 0.5 tooth pitch of side set, best results.Now, under the condition of same widths, the equivalent cross-sectional area of equivalent sectional area ratio Symmetrical rack can improve 35.1%, and corresponding tooth bar intensity has also improved 35.1%.That is, identical with Symmetrical rack thickness, when overall width is identical, side set tooth bar equivalent cross-sectional area can increase 35.1%.
As identical with Symmetrical rack 10 in side set tooth bar 20 ' representative section area, the overall width D3 of tooth bar can reduce by a tooth depth 154mm, and tooth bar overall width D3 is that 592.2mm just can meet requirement of strength.
In order to further illustrate side set tooth bar of the present utility model, can improve by improving the representative section area of tooth bar the mechanical property of rack structure, below with the relative second denture displacement of the first denture of Symmetrical rack as shown in Figure 1, reach 0.45 and 0.4 adjacent teeth distance specific embodiment describe.
As shown in Figure 4, side set tooth bar 30 comprises the first denture 31, the second denture 32 and main body portion 33.The first denture 31 comprises that tooth top portion 311 and tooth root portion 312, the second dentures 32 comprise tooth top portion 321 and tooth root portion 322.The tooth root portion 312 of the first denture 31 is corresponding to the tooth root portion 322 of the second denture 32 0.45 the adjacent teeth distance that staggers, be P2 ' be that (wherein dotted line represents 113.0999mm apart from the distance of P2, the in the situation that of Symmetrical rack, the corresponding tooth root P2 ' of tooth root P1), now, the representative section of side set tooth bar 30 is positioned at C place, and the area S2 of representative section C is calculated as follows:
S2＝575.325×120＝69039(mm
2)
With respect to the Symmetrical rack 10 of same widths, its equivalent area improves ratio F2 and is:
F2＝(69039-52584)/52584＝31.3％
As shown in Figure 5, side set tooth bar 40 comprises the first denture 41, the second denture 42 and main body portion 43.The first denture 41 comprises that tooth top portion 411 and tooth root portion 412, the second dentures 42 comprise tooth top portion 421 and tooth root portion 422.The tooth root portion 412 of the first denture 41 is corresponding to the tooth root portion 422 of the second denture 42 0.4 the adjacent teeth distance that staggers, be P4 ' be that (wherein dotted line represents 100.5332mm apart from the distance of P4, the in the situation that of Symmetrical rack, the corresponding tooth root P4 ' of tooth root P3), now, the representative section of side set tooth bar 40 is positioned at D place, and the area S2 of representative section D is calculated as follows:
S3＝544.6678×120＝65360.136(mm
2)
With respect to the Symmetrical rack 10 of same widths, its equivalent area improves ratio F3 and is:
F3＝(65360.136-52584)/52584＝24.3％
Visible, side set tooth bar of the present utility model is adopting side set structure can improve the representative section area of tooth bar, thereby improves the mechanical property of rack structure.
In sum, as make the intensity of asymmetric spline of the present utility model identical with prior art Symmetrical rack intensity, can make its thickness constant, reduce its tooth bar width, meet like this tooth bar requirement of strength, can effectively save material again.This asymmetric slab tooth bar form is simple, easily construction, and enterprise only need upgrade ripe cutting process, can save steel plate cost again, can be applicable to jack-up unit spud leg or other need to use the occasion of large-scale tooth bar, easy to utilize.
Certainly; the utility model also can have other various embodiments; in the situation that not deviating from the utility model spirit and essence thereof; those of ordinary skill in the art are when making various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the utility model.
Claims (3)
1. the side set tooth bar for jack-up unit spud leg, it is characterized in that, comprise main body portion, the first denture and the second denture, described the first denture and described the second denture have identical profile of tooth, described the first denture both sides of being positioned at described main body portion relative to described the second denture, described the first denture and described the second denture comprise respectively tooth root portion and tooth top portion, wherein, the tooth root portion of described the first denture described main body portion relative to the tooth root portion of described the second denture is asymmetric, the tooth top portion of described the first denture described main body portion relative to the tooth top portion of described the second denture is asymmetric.
2. the side set tooth bar for jack-up unit spud leg according to claim 1, is characterized in that, the profile of tooth of the profile of tooth of described the first denture and described the second denture is straight-tooth.
3. the side set tooth bar for jack-up unit spud leg according to claim 2, is characterized in that, the tooth root portion of described the first denture is corresponding to the tooth root portion of described the second denture 0.4 to 0.5 the adjacent teeth distance that staggers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420046947.1U CN203756919U (en) | 2014-01-24 | 2014-01-24 | Staggered tooth rack for self-elevating platform pile leg |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420046947.1U CN203756919U (en) | 2014-01-24 | 2014-01-24 | Staggered tooth rack for self-elevating platform pile leg |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203756919U true CN203756919U (en) | 2014-08-06 |
Family
ID=51252198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420046947.1U Expired - Lifetime CN203756919U (en) | 2014-01-24 | 2014-01-24 | Staggered tooth rack for self-elevating platform pile leg |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203756919U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806728A (en) * | 2014-01-24 | 2015-07-29 | 烟台中集来福士海洋工程有限公司 | Staggered tooth rack |
-
2014
- 2014-01-24 CN CN201420046947.1U patent/CN203756919U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806728A (en) * | 2014-01-24 | 2015-07-29 | 烟台中集来福士海洋工程有限公司 | Staggered tooth rack |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140806 |