CN102311037B - Staircase truss - Google Patents
Staircase truss Download PDFInfo
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- CN102311037B CN102311037B CN 201110312168 CN201110312168A CN102311037B CN 102311037 B CN102311037 B CN 102311037B CN 201110312168 CN201110312168 CN 201110312168 CN 201110312168 A CN201110312168 A CN 201110312168A CN 102311037 B CN102311037 B CN 102311037B
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- shaped steel
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- curvilinear
- diagonal brace
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Abstract
The invention discloses a staircase truss, which is characterized in that a plurality of diagonally-braced section steels are arranged into curvilinear diagonally-braced section steels, the bending degree of the curvilinear diagonally-braced section steel is properly arranged to enable the curvilinear diagonally-braced section steel to have enough strength to support and reinforce the truss, the curvilinear diagonally-braced section steels absorb heat generated during welding to generate thermal stress when the curvilinear diagonally-braced section steels are welded on the staircase truss, the thermal stress acts on the curvilinear diagonally-braced section steels to enable the curvilinear diagonally-braced section steels to be compressed, the curvature radius of the bent part of the compressed curvilinear diagonally-braced section steels becomes smaller, and after the welding is completed and when the heat on the curvilinear diagonally-braced section steels is dissipated slowly, shrinkage stress is generated on the curvilinear diagonally-braced section steels to enable the curvilinear diagonally-braced section steels to be elongated, and the curvature radius of the bent part of the curvilinear diagonally-braced section steels becomes larger. Therefore, the thermal stress which causes expansion on heating and contraction on cooling to the curvilinear diagonally-braced section steels and is caused by the high heat generated during welding is absorbed and released by the bent parts of the curvilinear diagonally-braced section steels, the thermal deformation of the staircase truss generated during welding can be effectively reduced and the yield rate of the truss is improved.
Description
Technical field
The present invention relates to a kind of staircase and girder.
Background technology
At present, known moving staircase girders generally all is to adopt welding technology to be made, referring to shown in Figure 1, it is by two parallel shaped steel and a plurality of column form basic steel beam structure up and down, for the intensity of reinforced steel beam and girder, added linear diagonal brace shaped steel between a plurality of columns and the shaped steel, after welding, formed a triangle between shaped steel, column and the diagonal brace shaped steel, so that whole steel beam structure has enough strength and stabilities.
But, in adopting the welding technology sintering procedure, because the high temperature that welding produces, the diagonal brace shaped steel of linearity absorbs violent expansion of heat and extends, after welding was finished, the violent contraction produced larger shrink stress so that whole truss deforms after the cooling of diagonal brace shaped steel.Because the thermal deformation process of welding is comparatively complicated, the distortion that truss produces in this process has the forms such as distortion, bending, and this Deformation control is very difficult, and should distortion be difficult to proofread and correct.In process of production, factory generally adopts the fixing environment of frock to weld, thus Reducing distortion amount as far as possible, but stress is released when truss is removed from frock, is out of shape still unavoidably, the production yield of truss is low.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, the thermal deformation that provides a kind of staircase and girder to produce in welding process to reduce truss.
For achieving the above object, the technical solution used in the present invention is: a kind of staircase and girder, comprise the first shaped steel, the second shaped steel that parallels with described the first shaped steel, be fixedly installed on a plurality of columns and a plurality of diagonal brace shaped steel between described the first shaped steel and described the second shaped steel, described a plurality of column and described the first shaped steel, the perpendicular setting of described the second shaped steel, described a plurality of diagonal brace shaped steel and described the first shaped steel, described the second shaped steel tilts setting, described a plurality of column, described a plurality of diagonal brace shaped steel is along described the first shaped steel, the length direction of described the second shaped steel distributes separately, the both ends of described a plurality of diagonal brace shaped steel are welded and fixed respectively and are arranged on described the first shaped steel, on described the second shaped steel, described a plurality of diagonal brace shaped steel is curve diagonal brace shaped steel, described curve diagonal brace shaped steel has the first curved profile and the second curved profile that is oppositely arranged, on any vertical section of described curve diagonal brace shaped steel, described the first curved profile, the circular arc tangential line of crooked arc sections lays respectively at the both sides of the line of centers of described vertical section on the outline line of described the second profile.
Preferably, described curve diagonal brace shaped steel adopts " S " type shaped steel or circular arc type shaped steel.
Because the utilization of technique scheme, the present invention compared with prior art has following advantages: be set to curve diagonal brace shaped steel by a plurality of diagonal brace shaped steel, and its crooked degree is set suitably makes it have enough intensity truss is carried out bracing reinforcement, when being set to the welding of this curve diagonal brace shaped steel on the first shaped steel on the staircase and girder and the second shaped steel, curve diagonal brace shaped steel absorbs the heat of welding generation and produces thermal stress, this thermal stress acts on the curve diagonal brace shaped steel so that curve diagonal brace shaped steel is compressed, the radius of curvature of its compressed rear curve diminishes, after welding is finished, when the heat on the curve diagonal brace shaped steel slowly leaves, produce shrink stress so that curve diagonal brace shaped steel is elongated on the curve diagonal brace shaped steel, its radius of curvature that is elongated rear curve becomes large.Like this, in the process of welding, the high heat that welding produces and the thermal stress of expanding with heat and contract with cold that causes curve diagonal brace shaped steel absorb and discharge by the curve of curve diagonal brace shaped steel, have effectively reduced the thermal deformation that staircase and girder produces in welding process, have improved the production yield of truss.
Description of drawings
Accompanying drawing 1 is the structural representation of existing staircase and girder;
Accompanying drawing 2 is the structural representation of the staircase and girder of embodiments of the invention one;
Accompanying drawing 3 is the structural representation of the staircase and girder of embodiments of the invention two.
The specific embodiment
Further set forth structure of the present invention below in conjunction with accompanying drawing.
Shown in Fig. 2-3, a kind of staircase and girder, comprise the first shaped steel 1, the second shaped steel 2 that parallels with the first shaped steel 1, and be fixedly installed on a plurality of columns 3 and a plurality of diagonal brace shaped steel between the first shaped steel 1 and the second shaped steel 2, a plurality of columns 3 and the first shaped steel 1, the second shaped steel 2 homogeneous phases are obliquely installed, a plurality of diagonal brace shaped steel and the first shaped steel 1, the second shaped steel 2 homogeneous phases are obliquely installed, a plurality of diagonal brace shaped steel and a plurality of column 3 distribute separately along the length direction of the first shaped steel 1 and the second shaped steel 2, the both ends of a plurality of diagonal brace shaped steel are arranged on the first shaped steel 1 and the second shaped steel 2 by being welded and fixed respectively, the first shaped steel 1, the second shaped steel 2 and a plurality of column 3 have formed the basic steel beam structure of truss, and the setting of a plurality of diagonal brace shaped steel has then improved stability and the intensity of this steel beam structure.A plurality of diagonal brace shaped steel are curve diagonal brace shaped steel 4, this curve diagonal brace shaped steel 4 has the first curved profile 41 and the second curved profile 42 that is oppositely arranged, on any vertical section of curve diagonal brace shaped steel 4, the circular arc tangential line of crooked arc sections lays respectively at the both sides of the line of centers of above-mentioned vertical section on the outline line of the first curved profile 41 and the second curved profile 42, thereby can play the effect that truss reinforcement is supported so that this curve diagonal brace shaped steel 4 has enough intensity like this.The line of centers here refers to one shorter in staggered two lines that link to each other of up and down two-end-point of the outline line of the first curved profile 41 and the second curved profile 42 on the cross section, and this cross section is equally divided into the identical two parts of two symmetries along this line of centers.This curve diagonal brace shaped steel 4 forms via the prestress compacting, generally can adopt the pressing compacting to form.In embodiment one, referring to shown in Figure 2, what a plurality of curve diagonal brace shaped steel 4 adopted is " S " type shaped steel, in embodiment two, referring to shown in Figure 3, what a plurality of curve diagonal brace shaped steel 4 adopted is circular arc type shaped steel, and the line of centers that is its vertical section shown in the dotted line among Fig. 2-3, the circular arc tangential line of " S " type of both sides and the crooked arc sections of circular arc all are no more than this line of centers and lay respectively at the both sides of this line of centers.
When curve diagonal brace shaped steel 4 is welded to the first shaped steel 1, in the time of on the second shaped steel 2, curve diagonal brace shaped steel 4 absorbs heat that welding produces and so that its inner thermal stress that produces, this thermal stress is so that curve diagonal brace shaped steel 4 is compressed between the first shaped steel 1 and the second shaped steel 2, the radius of curvature of curve diminishes on the curve diagonal brace shaped steel 4, and after welding is finished, when the heat on the curve diagonal brace shaped steel 4 slowly leaves, at this moment produce shrink stress so that curve diagonal brace shaped steel 4 is elongated on the curve diagonal brace shaped steel 4 between the first shaped steel 1 and the second shaped steel 2, the radius of curvature of curve becomes large on the curve diagonal brace shaped steel 4, like this, in the process of welding, the high heat that welding produces and the thermal stress of expanding with heat and contract with cold that causes curve diagonal brace shaped steel 4 absorb and discharge by the curve of curve diagonal brace shaped steel 4, effectively reduce the thermal deformation that staircase and girder produces in welding process, improved the production yield of truss.
Above-described embodiment only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the personage who is familiar with technique can understand content of the present invention and according to this enforcement, can not limit protection scope of the present invention with this.All equivalences that Spirit Essence is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (1)
1. staircase and girder, comprise the first shaped steel, the second shaped steel that parallels with described the first shaped steel, be fixedly installed on a plurality of columns and a plurality of diagonal brace shaped steel between described the first shaped steel and described the second shaped steel, described a plurality of column and described the first shaped steel, the perpendicular setting of described the second shaped steel, described a plurality of diagonal brace shaped steel and described the first shaped steel, described the second shaped steel tilts setting, described a plurality of column, described a plurality of diagonal brace shaped steel is along described the first shaped steel, the length direction of described the second shaped steel distributes separately, the both ends of described a plurality of diagonal brace shaped steel are welded and fixed respectively and are arranged on described the first shaped steel, on described the second shaped steel, it is characterized in that: described a plurality of diagonal brace shaped steel are curve diagonal brace shaped steel, described curve diagonal brace shaped steel has the first curved profile and the second curved profile that is oppositely arranged, on any vertical section of described curve diagonal brace shaped steel, described the first curved profile, the circular arc tangential line of crooked arc sections lays respectively at the both sides of the line of centers of described vertical section on the outline line of described the second curved profile, described curve diagonal brace shaped steel employing "
S" type shaped steel or circular arc type shaped steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110312168 CN102311037B (en) | 2011-10-14 | 2011-10-14 | Staircase truss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110312168 CN102311037B (en) | 2011-10-14 | 2011-10-14 | Staircase truss |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102311037A CN102311037A (en) | 2012-01-11 |
| CN102311037B true CN102311037B (en) | 2013-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110312168 Active CN102311037B (en) | 2011-10-14 | 2011-10-14 | Staircase truss |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014224460A1 (en) * | 2014-11-28 | 2016-06-02 | Thyssenkrupp Ag | Carrying structure for a conveyor |
| DE102014224457A1 (en) * | 2014-11-28 | 2016-06-02 | Thyssenkrupp Ag | Carrying structure for a conveyor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2801738Y (en) * | 2005-06-06 | 2006-08-02 | 江苏康力电梯集团有限公司 | Automatic staircase truss |
| CN1915781A (en) * | 2006-09-05 | 2007-02-21 | 西子奥的斯电梯有限公司 | Truss of integral type stairway |
| CN200951921Y (en) * | 2006-09-19 | 2007-09-26 | 西子奥的斯电梯有限公司 | Staircase honing supporter |
| CN201574368U (en) * | 2010-01-19 | 2010-09-08 | 田国 | Stereoscopic type road bridge safety barrier |
| CN202272613U (en) * | 2011-10-14 | 2012-06-13 | 克莱斯电梯（中国）有限公司 | Escalator truss |
-
2011
- 2011-10-14 CN CN 201110312168 patent/CN102311037B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2801738Y (en) * | 2005-06-06 | 2006-08-02 | 江苏康力电梯集团有限公司 | Automatic staircase truss |
| CN1915781A (en) * | 2006-09-05 | 2007-02-21 | 西子奥的斯电梯有限公司 | Truss of integral type stairway |
| CN200951921Y (en) * | 2006-09-19 | 2007-09-26 | 西子奥的斯电梯有限公司 | Staircase honing supporter |
| CN201574368U (en) * | 2010-01-19 | 2010-09-08 | 田国 | Stereoscopic type road bridge safety barrier |
| CN202272613U (en) * | 2011-10-14 | 2012-06-13 | 克莱斯电梯（中国）有限公司 | Escalator truss |
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| Publication number | Publication date |
|---|---|
| CN102311037A (en) | 2012-01-11 |
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