CN104806728A - Staggered tooth rack - Google Patents
Staggered tooth rack Download PDFInfo
- Publication number
- CN104806728A CN104806728A CN201410035331.9A CN201410035331A CN104806728A CN 104806728 A CN104806728 A CN 104806728A CN 201410035331 A CN201410035331 A CN 201410035331A CN 104806728 A CN104806728 A CN 104806728A
- Authority
- CN
- China
- Prior art keywords
- tooth
- denture
- side set
- tooth bar
- rack
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/26—Racks
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
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
The present invention relates to a kind of driving rack, particularly refer to the asymmetrical tooth bar with side set rack structure of a kind of profile of tooth, can be applied on jack-up unit spud leg.
Background technique
At present, in the design of jack-up unit spud leg tooth bar, the general tooth bar adopting symplex structure.Inner platform manufacturing firm of state, major part uses import tooth bar, and price is high, lead time is long, also has part manufacturing firm to adopt steel plate special to cut voluntarily.Be generally used for the raw steel thickness manufacturing tooth bar and can reach more than 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.
Summary of the invention
The object of the invention is the problem solving 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, is improved the mechanical property of rack structure by the representative section area improving tooth bar.
To achieve these goals, side set tooth bar of the present invention, comprise main body portion, the first denture and the second denture, described first denture and described second denture have identical profile of tooth, the described first denture both sides that are positioned at described main body portion relative to described second denture, described first denture and described second denture comprise tooth root portion and tooth crest respectively, wherein, the tooth root portion described main body portion relative to the tooth root portion of described second denture of described first denture is asymmetric, and the tooth crest described main body portion relative to the tooth crest of described second denture of described first denture is asymmetric.
Above-mentioned side set tooth bar, wherein, described side set tooth bar is used for jack-up unit spud leg.
Above-mentioned side set tooth bar, wherein, the profile of tooth of described first denture and the profile of tooth of described second denture are straight-tooth.
Above-mentioned side set tooth bar, wherein, stagger 0.4 to 0.5 adjacent teeth distance in the tooth root portion that the tooth root portion of described first denture corresponds to described second denture.
Beneficial functional of the present invention is, adopts side set tooth bar of the present invention can improve representative section area relative to the Symmetrical rack of prior art, thus improves the intensity of tooth bar; The tooth bar of same intensity then can save material.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing Symmetrical rack;
Fig. 2 is the structural representation of the first embodiment of side set tooth bar of the present invention;
The first embodiment that Fig. 3 is side set tooth bar of the present invention and the Symmetrical rack shown in Fig. 1 have structural representation during identical width/intensity;
Fig. 4 is the structural representation of the second embodiment of side set tooth bar of the present invention;
Fig. 5 is the structural representation of the 3rd embodiment of side set tooth bar of the present invention.
Wherein, reference character
10 Symmetrical racks
11 first dentures
111 tooth crest
112 tooth root portions
12 second dentures
121 tooth crest
122 tooth root portions
13 main body portioies
20 side set tooth bars
21 first dentures
211 tooth crest
212 tooth root portions
22 second dentures
221 tooth crest
222 tooth root portions
23 main body portioies
Embodiment
Below in conjunction with the drawings and specific embodiments, technical solution of the present invention is described in detail, further to understand object of the present invention, scheme and effect, but not as the restriction of claims protection domain of the present invention.
For comparative illustration side set tooth bar of the present invention, now brief description is done to the Symmetrical rack of prior art.As shown in Figure 1, in prior art, Symmetrical rack 10 comprises the first denture 11, second denture 12 and main body portion 13.First denture 11 and the second denture 12 have identical profile of tooth and lay respectively at the left and right sides of described main body portion 13 axisymmetricly.Particularly, the first denture 11 comprises tooth crest 111 and tooth root portion 112, second denture 12 comprises tooth crest 121 and tooth root portion 122.Wherein, the tooth crest 111 of the first denture 11 and the tooth crest 121 of the second denture 12 symmetrical relative to main body portion 13, the tooth root portion 112 of the first denture 11 and the tooth root portion 122 of the second denture 12 symmetrical relative to main body portion 13.
As shown in Figure 2, side set tooth bar 20 of the present invention comprises the first denture 21, second denture 22 and main body portion 23, 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 first denture 21 and the profile of tooth of the second denture 22 asymmetric.
Specifically, first denture 21 comprises tooth crest 211 and tooth root portion 212, second denture 22 comprises tooth crest 221 and tooth root portion 222, the tooth crest 211 of the first denture 21 and the tooth crest 221 of the second denture 22 asymmetric relative to main body portion 23, accordingly, the tooth root portion 212 of the first denture 21 and the tooth root portion 222 of the second denture 22 asymmetric relative to main body portion 23, tooth root and the tooth top in the same cross section, side set tooth bar 20 both sides after namely having cut are non-symmetry structure.
Adopt side set tooth bar technology of the present invention, the representative section area of tooth bar can be improved under the prerequisite expending same steel plate consumption; Or under the prerequisite ensureing same representative section area, reduce steel plate consumption.
For the Symmetrical rack that the spud leg of existing SuperM2 jack-up unit adopts, 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, two tooth tooth tops of the first denture 11 of rack-plate and the symmetry of the second denture 12 are 746.20mm apart from d1, two tooth tooth roots of the symmetry of the first denture 11 and the second denture 12 are 438.20mm apart from d2, two tooth tooth tops adjacent on each denture are equal apart from L2 with two adjacent tooth tooth roots apart from L1, and L1=L2=251.333mm, representative section is positioned at the first denture 11 and the second denture 12 apart from most weakness, namely the first denture 11 and the second denture 12 relative to main body portion 13 symmetry two tooth root portions between position, A place as shown in Figure 1.The area S0 of representative section A is calculated as follows:
S0＝438.20×120＝52584mm
2
Compare for convenience, as shown in Figure 2, the dimensional parameters of side set tooth bar 20 of the present invention is identical with the Symmetrical rack 10 shown in Fig. 1, its difference is, relative second denture 22 displacement of first denture 21 reaches 0.5 adjacent teeth distance, the i.e. tooth crest 221 of corresponding second denture 22 in tooth root portion 212 of tooth root portion 222, first denture 21 of corresponding second denture 22 of the tooth crest 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 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）
Relative 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 identical with the Symmetrical rack width shown in Fig. 1 and the structural representation of the side set tooth bar of side set 0.5 adjacent teeth distance; Structural representation when dotted line represents identical with the representative section area of the Symmetrical rack shown in Fig. 1.
When 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 invention adds the area of representative section.Wherein, side set tooth bar when side set 0.5 tooth pitch, 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 also improves 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 namely tooth bar overall width D3 is that 592.2mm just can meet requirement of strength.
Can be improved the mechanical property of rack structure by the representative section area improving tooth bar in order to further illustrate side set tooth bar of the present invention, the specific embodiment reaching 0.45 and 0.4 adjacent teeth distance with the relative second denture displacement of the first denture of Symmetrical rack as shown in Figure 1 is below described.
As shown in Figure 4, side set tooth bar 30 comprises the first denture 31, second denture 32 and main body portion 33.First denture 31 comprises tooth crest 311 and tooth root portion 312, second denture 32 comprises tooth crest 321 and tooth root portion 322.Stagger 0.45 adjacent teeth distance in the tooth root portion 322 that the tooth root portion 312 of the first denture 31 corresponds to the second denture 32, namely P2 ' apart from the distance of P2 be 113.0999mm(wherein dotted line represent, when 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）
Relative 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, second denture 42 and main body portion 43.First denture 41 comprises tooth crest 411 and tooth root portion 412, second denture 42 comprises tooth crest 421 and tooth root portion 422.Stagger 0.4 adjacent teeth distance in the tooth root portion 422 that the tooth root portion 412 of the first denture 41 corresponds to the second denture 42, namely P4 ' apart from the distance of P4 be 100.5332mm(wherein dotted line represent, when 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）
Relative to the Symmetrical rack 10 of same widths, its equivalent area improves ratio F3 and is:
F3=（65360.136-52584）/52584=24.3%
Visible, the representative section area that side set tooth bar of the present invention is adopting side set structure can improve tooth bar, thus improve the mechanical property of rack structure.
In sum, as identical with prior art Symmetrical rack intensity in made the intensity of asymmetric spline of the present invention, its thickness can be made constant, reduce its tooth bar width, meet tooth bar requirement of strength like this, effectively can save material again.This asymmetric slab rack form is simple, easily constructs, 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 present invention also can have other various embodiments; when not deviating from the present invention's spirit and essence thereof; those of ordinary skill in the art are when making various corresponding change and distortion according to the present invention, but these change accordingly and are out of shape the protection domain that all should belong to the claim appended by the present invention.
Claims (4)
1. a side set tooth bar, it is characterized in that, comprise main body portion, the first denture and the second denture, described first denture and described second denture have identical profile of tooth, the described first denture both sides that are positioned at described main body portion relative to described second denture, described first denture and described second denture comprise tooth root portion and tooth crest respectively, wherein, the tooth root portion described main body portion relative to the tooth root portion of described second denture of described first denture is asymmetric, and the tooth crest described main body portion relative to the tooth crest of described second denture of described first denture is asymmetric.
2. side set tooth bar according to claim 1, is characterized in that, described side set tooth bar is used for jack-up unit spud leg.
3. side set tooth bar according to claim 1 and 2, is characterized in that, the profile of tooth of described first denture and the profile of tooth of described second denture are straight-tooth.
4. side set tooth bar according to claim 3, is characterized in that, staggers 0.4 to 0.5 adjacent teeth distance in the tooth root portion that the tooth root portion of described first denture corresponds to described second denture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410035331.9A CN104806728A (en) | 2014-01-24 | 2014-01-24 | Staggered tooth rack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410035331.9A CN104806728A (en) | 2014-01-24 | 2014-01-24 | Staggered tooth rack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104806728A true CN104806728A (en) | 2015-07-29 |
Family
ID=53691822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410035331.9A Pending CN104806728A (en) | 2014-01-24 | 2014-01-24 | Staggered tooth rack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104806728A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134913A (en) * | 2015-08-12 | 2015-12-09 | 苏州安特实业有限公司 | Multi-tooth plate |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4022429A (en) * | 1975-03-13 | 1977-05-10 | Daido Kiko Co., Ltd. | Lifting apparatus |
| JPS5634037Y2 (en) * | 1976-10-14 | 1981-08-12 | ||
| FR2497903A1 (en) * | 1981-01-14 | 1982-07-16 | Brissonneau & Lotz | Jacking mechanism for marine platform - has double rack and pinion with offset gear teeth |
| ES2015429A6 (en) * | 1989-07-24 | 1990-08-16 | Frape Bhr S A | Rack-type control mechanism |
| CN1789684A (en) * | 2004-12-13 | 2006-06-21 | 朱兵晓 | Transmission method of pinion-and-rack system |
| EP1177966B1 (en) * | 2000-08-04 | 2009-01-28 | NSK Ltd., | Hollow rack shaft |
| CN102996735A (en) * | 2011-09-15 | 2013-03-27 | 山东科瑞石油装备有限公司 | Method and measure for improving carrying capability of lifting device of self-elevating type platform gear rack |
| CN103095095A (en) * | 2012-12-20 | 2013-05-08 | 深圳大学 | Asymmetric double-sided linear switch reluctance motor |
| CN203756919U (en) * | 2014-01-24 | 2014-08-06 | 烟台中集来福士海洋工程有限公司 | Staggered tooth rack for self-elevating platform pile leg |
-
2014
- 2014-01-24 CN CN201410035331.9A patent/CN104806728A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4022429A (en) * | 1975-03-13 | 1977-05-10 | Daido Kiko Co., Ltd. | Lifting apparatus |
| JPS5634037Y2 (en) * | 1976-10-14 | 1981-08-12 | ||
| FR2497903A1 (en) * | 1981-01-14 | 1982-07-16 | Brissonneau & Lotz | Jacking mechanism for marine platform - has double rack and pinion with offset gear teeth |
| ES2015429A6 (en) * | 1989-07-24 | 1990-08-16 | Frape Bhr S A | Rack-type control mechanism |
| EP1177966B1 (en) * | 2000-08-04 | 2009-01-28 | NSK Ltd., | Hollow rack shaft |
| CN1789684A (en) * | 2004-12-13 | 2006-06-21 | 朱兵晓 | Transmission method of pinion-and-rack system |
| CN102996735A (en) * | 2011-09-15 | 2013-03-27 | 山东科瑞石油装备有限公司 | Method and measure for improving carrying capability of lifting device of self-elevating type platform gear rack |
| CN103095095A (en) * | 2012-12-20 | 2013-05-08 | 深圳大学 | Asymmetric double-sided linear switch reluctance motor |
| CN203756919U (en) * | 2014-01-24 | 2014-08-06 | 烟台中集来福士海洋工程有限公司 | Staggered tooth rack for self-elevating platform pile leg |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134913A (en) * | 2015-08-12 | 2015-12-09 | 苏州安特实业有限公司 | Multi-tooth plate |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
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Application publication date: 20150729 |