CN203428753U - Light-weight solid-web I-shaped steel crane girder - Google Patents
Light-weight solid-web I-shaped steel crane girder Download PDFInfo
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- CN203428753U CN203428753U CN201320505408.5U CN201320505408U CN203428753U CN 203428753 U CN203428753 U CN 203428753U CN 201320505408 U CN201320505408 U CN 201320505408U CN 203428753 U CN203428753 U CN 203428753U
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- crane girder
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- steel crane
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Abstract
The utility model discloses a light-weight solid-web I-shaped steel crane girder. Rails are welded with upper flanges of the solid-web I-shaped steel crane girder; furthermore, distances between stiffening ribs are reduced to 0.5-0.8 m, and the adjacent stiffening ribs can effectively support combined girders formed by welding the rails and the upper flanges, so that webs of the solid-web I-shaped steel crane girder are converted into a two-directional simple stress state under wheel-pressure-free local pressure stress from three-directional complicated stress consisting of horizontal tension and pressure positive stress, vertical shear force and wheel-pressure local pressure stress, so that the steel using amount of the webs can be reduced; meanwhile, the rails are welded with the upper flanges, so that the rails can realize the functions of the upper flanges; therefore, the steel using amount of the upper flanges can be correspondingly reduced.
Description
Technical field
The invention belongs to crane girder field of steel structure, relate to a kind of real abdomen formula I-shape welded rails steel crane beam.
Background technology
Traditional steel crane beam generally has the real fu jie structure of I-shape (seeing national building standard design atlas 05G514) and truss structure.The crane girder of little tonnage, little span is generally without stop platform or truss, and large-tonnage, large span crane girder need arrange stop platform or stop truss in order to resist crane horizontal force.
Traditional real abdomen formula I-steel crane girder generally forms I-shaped cross-section by top flange plate, bottom wing listrium and web, on web at a certain distance, being generally 1.5 meters is arranged to vertical ribbed stiffener to keep not unstability of web, crane girder two ends welding bearing end plate, at top flange plate middle part, rail is installed, rail is fixed on top flange plate by the fastening rail pressing plate of Gay bolt or welding pressing plate, track vertically only bears the wheel load that crane cart wheel transmits, track passes to crane girder web after wheel load is disperseed again, finally by real abdomen H-girder, carries whole crane vertical load.Real abdomen formula Crane Beam With I span is generally 6 meters, 9 meters, 12 meters or longer, is generally the multiple of 3 meters, and because foundation settlement is inhomogeneous, less employing continous way crane girder, is generally simple beam structure.Crane girder neutral axis is generally compression effort with upper part cross section, and the following partial cross section of neutral axis is generally tensile stress, and web also will bear shearing and crane wheel transmits the compression effort of coming.
The web of traditional real abdomen formula I-steel crane girder passes three kinds of stress of local compression effort of coming owing to will bearing moment of flexure normal stress, shearing and wheel load, three kinds of stress stack trailing webs are stressed very complicated, therefore web materials under three kinds of effect of stress are thicker, the 8mm of book, thick reach 20mm more than, the steel using amount of general web accounts for 35% ~ 60% of whole crane girder steel using amount, and web has been a kind of tectonic action in whole crane girder structure, and so high steel using amount is uneconomic.
Rail on traditional real abdomen formula I-steel crane girder only bears and transmits wheel load, to whole crane beam structural strength without any contribution, cause top flange plate owing to bearing crane vertical load moment of flexure and crane horizontal loading moment of flexure, therefore steel plate used is generally thick than lower flange, also wider than lower flange, materials are also more members.
Summary of the invention
In order to overcome traditional real abdomen formula I-steel crane girder web and the large deficiency of top flange steel using amount, the utility model provides a kind of technical scheme that reduces web and top flange steel using amount, is all to reduce thickness and the width of web thickness and top flange plate under satisfied prerequisite meeting steel crane beam bulk strength, rigidity, stability and fatigue and component partial strength and stability.
The utility model solve the technical problem adopted technical scheme: the ribbed stiffener spacing on real abdomen formula I-steel crane girder web is decreased to 0.5 ~ 0.8m by 1.5 meters, make ribbed stiffener not only there is restriction web unstability function, also there is rail support point function, be after ribbed stiffener and web combination, to become the supporting-point of track, the sleeper that is equivalent to railway, and ribbed stiffener is become on web both sides from general paired setting to staggered one side arranges long ribbed stiffener and reverse side arranges short stiffener, make crane girder web no longer directly bear the local compression effort that wheel load is transmitted, wheel load passes to one group or two groups of ribbed stiffeners by track and top flange composite beam, by ribbed stiffener, reach whole web plate section again, by the welding of track and top flange plate, make rail become one of important primary structure member of steel crane beam, track not only bears wheel load and transmits wheel load, and as a part of Bending positive pressure of H-section top flange.
The beneficial effects of the utility model are, under the span condition identical with hoisting crane load, the web of real abdomen formula I-steel crane girder can subtract book to 6 ~ 12mm, can reduce top flange plate steel using amount by 50% ~ 75% of orbital weight, therefore can significantly reduce steel crane beam weight, reduce the cost of investment of factory building; On the other hand, track and crane girder welding can reduce rail pressing plate connecting element, also can avoid track in use loosening, reduce maintenance work amount.
The utility model can be widely used in the medium-and-large-sized hoisting crane crane girder of the industries such as boats and ships, petrochemical industry, mining machinery, electric power, water conservancy, traffic.
Accompanying drawing explanation
Fig. 1 is the real abdomen formula of lightweight I-steel crane girder front view
Fig. 2 is the real abdomen formula of lightweight I-steel crane girder A-A section-drawing
Fig. 3 is the real abdomen formula of lightweight I-steel crane girder B-B section-drawing
Fig. 4 is the real abdomen formula of lightweight I-steel crane girder C-C section-drawing
1. tracks in figure, 2. top flange, 3. web, 4. lower flange, 5. long ribbed stiffener, 6. short stiffener, 7. bearing ribbed stiffener
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Referring to Fig. 1 to Fig. 4, the real abdomen formula of lightweight I-steel crane girder, comprises track 1, top flange 2, web 3, lower flange 4, long ribbed stiffener 5, short stiffener 6, bearing ribbed stiffener 7.It is characterized in that track 1 and top flange 2 weld togethers, the upper limb of web 3 and top flange 2 polish a tight welding, the upper end of long ribbed stiffener 5 and short stiffener 6 polishes and holds out against and top flange 2 welding, lower end is cut and is tiltedly avoided abrupt change of cross-section generation stress to concentrate, favourable prolongation crane girder fatigue life, 50 ~ 100mm is left in long ribbed stiffener 5 lower ends and lower flange 4, ribbed stiffener spacing is in 0.5 ~ 0.8m, long ribbed stiffener 5 is interspersed in web both sides with short ribbing 6, the short stiffener 6 of every long ribbed stiffener 5 and reverse side plays the effect of rail support point, be equivalent to the effect of railroad tie, bearing ribbed stiffener 7 is positioned at crane girder two ends, with top flange 2, web 3 and lower flange 4 welding, on it, be drilled with the bolt hole that crane girder is connected between two, be illustrated as bead formula seat structure.
Because ribbed stiffener spacing on the real abdomen formula of lightweight I-steel crane girder web is less, track 1 and top flange 2 Welding Composite Beam are played to effective supporting, make web 3 by level to tension and compression normal stress, the three-dimensional complicated applied force state reduction of vertical friction stress and local compression effort is that horizontal tension and compression normal stress and vertical friction stress two are to stress, therefore can subtract book web thickness, simultaneously, due to track 1 and top flange 2 weld togethers, make track 1 become one of crane girder main stress member, with the common Bending pressure in top flange 2, therefore can reduce 2 cross sections, top flange, thereby reduce steel using amount.
After track 1 and top flange 2 welding, reduced rail pressing plate and fixed orifice and avoided drilling fixed orifice and reduced cross section, top flange.
Above content is in conjunction with concrete preferred implementation further description made for the present invention; can not assert that the specific embodiment of the present utility model only limits to this; for general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; track welding can also be applied on jib cranes beam; thereby the upper web member welding that is about to track and jib cranes beam makes track become the main stress parts of crane girder, should be considered as belonging to the utility model by the definite scope of patent protection of submitted to claims.
Claims (6)
1. the real abdomen formula of lightweight I-steel crane girder, is characterized in that: track is one of main stress parts of crane girder, and ribbed stiffener is the supporting-point of track.
2. the real abdomen formula of lightweight according to claim 1 I-steel crane girder, is characterized in that the top flange welding of track and real abdomen formula I-steel crane girder, saves the auxiliary equipments such as track fixation clip.
3. the real abdomen formula of lightweight according to claim 1 I-steel crane girder, is characterized in that ribbed stiffener spacing is less, is generally 0.5 ~ 0.8m.
4. the real abdomen formula of lightweight according to claim 1 I-steel crane girder, is characterized in that one group of ribbed stiffener is comprised of long ribbed stiffener and short stiffener, and long ribbed stiffener and short stiffener are interspersed on web both sides.
5. the real abdomen formula of lightweight according to claim 1 I-steel crane girder, is characterized in that the lower end of long ribbed stiffener and short stiffener is cut oblique.
6. the real abdomen formula of lightweight according to claim 1 I-steel crane girder, is characterized in that web upper limb and top flange polish to hold out against welding, needn't full penetration, reduce welding deformation and welding stress.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320505408.5U CN203428753U (en) | 2013-08-19 | 2013-08-19 | Light-weight solid-web I-shaped steel crane girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320505408.5U CN203428753U (en) | 2013-08-19 | 2013-08-19 | Light-weight solid-web I-shaped steel crane girder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203428753U true CN203428753U (en) | 2014-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320505408.5U Expired - Fee Related CN203428753U (en) | 2013-08-19 | 2013-08-19 | Light-weight solid-web I-shaped steel crane girder |
Country Status (1)
| Country | Link |
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| CN (1) | CN203428753U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103395690A (en) * | 2013-08-19 | 2013-11-20 | 谢合清 | Light-weight solid-web I-shaped steel crane girder |
| CN110482407A (en) * | 2019-08-05 | 2019-11-22 | 中冶建筑研究总院有限公司 | It is a kind of for measuring the device of crane runway center line |
-
2013
- 2013-08-19 CN CN201320505408.5U patent/CN203428753U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103395690A (en) * | 2013-08-19 | 2013-11-20 | 谢合清 | Light-weight solid-web I-shaped steel crane girder |
| CN110482407A (en) * | 2019-08-05 | 2019-11-22 | 中冶建筑研究总院有限公司 | It is a kind of for measuring the device of crane runway center line |
| CN110482407B (en) * | 2019-08-05 | 2024-04-12 | 中冶建筑研究总院有限公司 | Device for measuring track center line of crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140212 Termination date: 20210819 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |