CN105019674B - A kind of safety roof - Google Patents
A kind of safety roof Download PDFInfo
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- CN105019674B CN105019674B CN201510445171.XA CN201510445171A CN105019674B CN 105019674 B CN105019674 B CN 105019674B CN 201510445171 A CN201510445171 A CN 201510445171A CN 105019674 B CN105019674 B CN 105019674B
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- column
- extension board
- safety roof
- roof according
- contact surface
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Abstract
The present invention relates to a kind of safety roof, belong to the technical field of Facilities.Safety roof of the present invention, including hollow pillar stand, at least one pair of perpendicular web for being used to be engaged by clamping with horizontal connector is welded with the outer surface of the hollow pillar stand；The pair of perpendicular web includes the first extension board and the second extension board being parallel to each other, and first extension board and the second extension board are respectively formed with flange and contact surface；And the column is steel column, the perpendicular web is made up of hardened steel；And formed with abrasion-resistant hardcoat on first contact surface and the second contact surface.Safety roof of the present invention is simple in construction, is combined with horizontal connector easily operated with convenient disassembly；And welding structure intensity is high, can also be guaranteed the safety of construction under extremely cold weather condition.
Description
Technical field
The present invention relates to the technical field of Facilities, it is more particularly related to a kind of safety roof.
Background technology
In construction building site, safety roof be used as security system component usually as on ground, on stair or other fields
Safety curtain, or as the edge protection on building, to prevent personnel or apparatus from dropping.Safety roof may be mounted at
In column base, the column base for example can be connected in or rest on ground or it is other on the basis of particular support.
But in the prior art, for safety roof in order to realize lock function, its structure is typically each complex, not only installs
Process is cumbersome, nor beneficial to dismounting and recovery；Further, since safety roof generally use steel member is spliced, this spelling
Under severe cold environment, its hot and connection reliability also has much room for improvement binding structure.
The content of the invention
In order to solve above-mentioned technical problem of the prior art, it is an object of the invention to provide a kind of safety roof.
A kind of safety roof, including the hollow circular cylinder column with vertical center axis, it is characterised in that：Outside the column
At least one pair of is welded with for vertical with horizontal connector clamping engagement along the direction parallel to the central shaft on surface
Wing plate；The pair of perpendicular web includes the first extension board and the second extension board that are parallel to each other, first extension board it is outer
Table away from second extension board direction extension formed with the first flange, the appearance of second extension board away from
The direction of first extension board extends formed with the second flange；Between the outer surface of the column and first flange
The outer surface of one extension board defines the first contact surface with horizontal connector clamping, the outer surface of the column and described second
The outer surface of the second extension board between flange defines the second contact surface with horizontal connector clamping.
Wherein, the perpendicular web extends to the bottom of the column from the top of the column.
Wherein, the column is steel column, and the perpendicular web is made up of hardened steel；And first contact surface and
Formed with abrasion-resistant hardcoat on second contact surface.
Wherein, the column steel has following chemical composition：0.01 ~ 0.05wt% C, 0.20 ~ 0.35wt% Si,
0.90 ~ 1.20wt% Mn, 0.20 ~ 1.0wt% Ni, 0.15 ~ 0.60wt% Cr, 0.01 ~ 0.05wt% Al, 0.12 ~
0.18wt% Mo, 0.005 ~ 0.02wt% N, 3 (C+N) wt% ~ 6 (C+N) wt% V, 0 ~（0.01+2N ）Wt% Ti；It is remaining
Measure as Fe and inevitable impurity.
Wherein, the column is more than 0.015wt% with C+N in steel.
Wherein, the column also further contains 0 ~ 0.003wt% Ca, 0 ~ 0.002wt% Mg, 0 ~ 0.003wt% with steel
Any of B or more.
Wherein, the hardened steel has consisting of：0.15 ~ 0.22wt% C, 0.20 ~ 1.5wt% Si, 0.30 ~
1.50wt% Mn, 0.20 ~ 0.80wt% Ni, 0.50 ~ 1.20wt% Cr, 0.15 ~ 0.35wt% Cu, 0.01 ~ 0.05wt%
Al, 0.02 ~ 0.10wt% Mo, 0.005 ~ 0.015wt% N, 0.02 ~ 0.06wt% Nb, 0.002 ~ 0.005wt% Zr；It is remaining
Measure as Fe and inevitable impurity.
Wherein, [Cu], [Ni], [Mo] and [Cr] represents Cu, Ni, Mo, Cr mass percent respectively, and they meet
With lower inequality：
2.1[Cu]+1.2[Ni]+3.8[Mo]+1.3[Cr] ≥1.6。
Wherein, the perpendicular web is then heated to 1050 ~ 1150 DEG C and is incubated 2.0 ~ 2.5 hours by moulding by casting, with
Speed water cooling not less than 20 DEG C/sec is to 300 ~ 350 DEG C, finally heated to 550 ~ 700 DEG C tempers 30 minutes, then water quenching
It is cooled to room temperature.
Wherein, the abrasion-resistant hardcoat is HVOF coatings, and the composition of coating is 22.0 ~ 30.0wt% amorphous two
Silica, 10.2 ~ 16.5wt% nickel, 15.0 ~ 21.0wt% aluminium, 3.8 ~ 5.5wt% chromium, 1.2 ~ 1.6wt% zirconium, and surplus
Tungsten carbide.
Wherein, the thickness of the abrasion-resistant hardcoat is 20 ~ 200 μm；Preferably 50 ~ 100 μm.
Safety roof of the present invention has the advantages that：
Safety roof of the present invention is simple in construction, is combined with horizontal connector easily operated with convenient disassembly；And weld
Structural strength height is connect, can also be guaranteed the safety of construction under extremely cold weather condition.
Brief description of the drawings
Fig. 1 is the structural representation of safety roof of the present invention.
Fig. 2 is safety roof and the structural representation of connector locking.
Embodiment
Safety roof of the present invention is further elaborated below with reference to specific embodiment, to help this area
Technical staff has more complete, accurate and deep understanding to inventive concept of the invention, technical scheme.
Embodiment 1
As shown in accompanying drawing 1 ~ 2, the safety roof described in the present embodiment, including the hollow circular cylinder column with vertical center axis
10, on the outer surface of the column 10 along the direction parallel to the central shaft be symmetrically welded with 4 pairs be used for and it is horizontal even
The perpendicular web 20 that fitting 30 is engaged by clamping；The pair of perpendicular web 20 includes the first extension board 22 and second being parallel to each other
Extension board 24, the appearance of first extension board 22 are convex formed with first away from the direction extension of second extension board 24
Edge 21, the appearance of second extension board extend formed with the second flange 26 away from the direction of first extension board；Institute
The outer surface for stating the first extension board 22 between the outer surface of column 10 and first flange 21 defines and horizontal connector
First contact surface 23 of clamping, the outer surface of the second extension board between the outer surface of the column and second flange limit
The second contact surface 25 with horizontal connector clamping.The perpendicular web 20 extends to described from the top of the column
The bottom of column.The column is steel column, and the perpendicular web is made up of hardened steel；And first contact surface and
Formed with abrasion-resistant hardcoat on two contact surfaces.The perpendicular web and water that safety roof described in the present embodiment passes through column excircle
Flushconnection part by jaw locking connection and then for setting other facilities such as crossbeam, with it is other by lock-screw, riveting or
The horizontal connection structure that person directly welds is compared, and has remarkable advantage simple to operate and convenient disassembly.
Embodiment 2
In the present embodiment, there is good welding performance in order to assign the hollow circular cylinder column, i.e., in order to ensure
The welding structure of the hollow circular cylinder column and perpendicular web has high weld strength, and keeps under cryogenic tough
Property, without ductile-brittle transiton occurs, and then improve the reliability and security of welding structure under cryogenic.Described in the present embodiment
Column steel there is following chemical composition：0.01 ~ 0.05wt% C, 0.20 ~ 0.35wt% Si, 0.90 ~ 1.20wt% Mn
（Preferably 0.90 ~ 1.05wt%）, 0.20 ~ 1.0wt% Ni (being preferably 0.20 ~ 0.50wt%), 0.15 ~ 0.60wt% Cr,
0.01 ~ 0.05wt% Al, 0.12 ~ 0.18wt% Mo, 0.005 ~ 0.02wt% N (being preferably 0.01 ~ 0.02wt%), 3 (C+N)
Wt% ~ 6 (C+N) wt% V, 0 ~（0.01+2N ）Wt% Ti；Surplus is Fe and inevitable impurity；And as preferably
Ground, the column are more than 0.015wt% with C+N in steel.In the present embodiment, the chemical composition of the steel can pass through routine
Smelting technology control and pour into steel billet, then by heating steel billet to 1150 DEG C progress hot rollings, rolling end temp be 800
DEG C, thickness of slab is 25mm after rolling, controls cooling velocity to be cooled to 500 DEG C for 5 ~ 8 DEG C/sec, is then air-cooled to room temperature, resulting
Steel plate tensile strength can reach more than 500MPa, and pendulum test shows absorption work(of the described steel plate at -60 DEG C not
Less than 100J, showing the column steel of the present embodiment has good low temperature hot；During other steel plate is obtained by straight seam welding
Hollow cylinder column, the average hardness of welding region are reduced only by about 2 ~ 5%, and welding region than the hardness in other regions
Average absorption work(still be maintained at more than 100J, show that welding region has excellent toughness under cryogenic for it.
Embodiment 3
In the present embodiment, the perpendicular web provides the locking object with horizontal connector, and it needs have high table
Surface hardness is to assign the rigidity of connection and stability.The hardened steel that the perpendicular web uses in the present embodiment has with the following group
Into：0.15 ~ 0.22wt% C（Preferably 0.15 ~ 0.18）, 0.20 ~ 1.5wt% Si, 0.30 ~ 1.50wt% Mn, 0.20 ~
0.80wt% Ni（Preferably 0.20 ~ 0.50wt%）, 0.50 ~ 1.20wt% Cr, 0.15 ~ 0.35wt% Cu, 0.01 ~
0.05wt% Al, 0.02 ~ 0.10wt% Mo, 0.005 ~ 0.015wt% N, 0.02 ~ 0.06wt% Nb, 0.002 ~
0.005wt% Zr；Surplus is Fe and inevitable impurity.Wherein, [Cu], [Ni], [Mo] and [Cr] represent respectively Cu, Ni,
Mo, Cr mass percent, and they meet with lower inequality：
2.1[Cu]+1.2[Ni]+3.8[Mo]+1.3[Cr] ≥1.6。
The perpendicular web is then heated to 1050 ~ 1150 DEG C and is incubated 2.0 ~ 2.5 hours, with not low by moulding by casting
In 20 DEG C/sec of speed water coolings to 300 ~ 350 DEG C, finally heated to 550 ~ 700 DEG C tempers 30 minutes, then water quenching is cooled to
Room temperature.Hardened steel described in the present embodiment is when 2.1 [Cu]+1.2 [Ni]+3.8 [Mo]+1.3 [Cr] >=1.6, at tempering
Reason not only improves toughness, and generates secondary hardening effect by the precipitation of carbide and nitride so that hardened steel
Yield strength can reach more than 1050MPa, and its sharpy ballistic work (V-notch) under the conditions of 20 DEG C is not less than
130J, it is shown that its good toughness.
Embodiment 4
In safety roof of the present invention, the pincers of first contact surface and the second contact surface directly with horizontal connector
Mouth locking, it is formed with abrasion-resistant hardcoat on this described contact surface to ensure the reliability of locking mechanism.It is described wear-resisting hard
Matter coating is HVOF coatings, and the composition of coating be 22.0 ~ 30.0wt% amorphous silica, 10.2 ~ 16.5wt% nickel,
15.0 ~ 21.0wt% aluminium, 3.8 ~ 5.5wt% chromium, 1.2 ~ 1.6wt% zirconium, and the tungsten carbide of surplus.Above-mentioned coating uses powder
Powder stock, and ensure by inert atmosphere ball milling or reducing atmosphere ball milling the powder grain of nickel in powder stock, aluminium, chromium and zirconium
Footpath is less than 15 μm, and the particle diameter of the amorphous silica and tungsten carbide is 15 ~ 30 μm.Then sprayed using supersonic flame
Painting system carries out HVOF sprayings, and the combustion gas used is propane, and powder feeding gas is N2.HVOF spraying technological parameter be：O2Partial pressure：
0.55 ~ 0.60 MPa, O2Flow is 12.0 ~ 13.5 m3/h；The partial pressure of propane：0.55 ~ 0.60 MPa, the flow of propane is 12.0
~13.5 m3/h；N2Partial pressure be 0.50 ~ 0.55MPa, N2Flow be 11.5 ~ 13.0 m3/h；Spray distance is 250 ~ 260
mm；After spraying under inertia or vacuum atmosphere, 30 ~ 60 minutes are incubated in 700 ~ 750 DEG C.Abrasion-resistant hardcoat obtained by spraying
Hardness HV0.11210 ± 67 can be reached.
For the ordinary skill in the art, simply the present invention is exemplarily described for specific embodiment,
Obviously present invention specific implementation is not subject to the restrictions described above, and is entered as long as employing the inventive concept and technical scheme of the present invention
The improvement of capable various unsubstantialities, or it is not improved by the present invention design and technical scheme directly apply to other occasions
, within protection scope of the present invention.
Claims (10)
1. a kind of safety roof, including the hollow circular cylinder column with vertical center axis, it is characterised in that：The appearance of the column
On face at least one pair of vertical tail, for being used to be engaged by clamping with horizontal connector is welded with along the direction parallel to the central shaft
Plate；The pair of perpendicular web includes the first extension board and the second extension board being parallel to each other, the appearance of first extension board
Extend away from the direction of second extension board formed with the first flange, the appearance of second extension board is away from institute
The direction for stating the first extension board extends formed with the second flange；First between the outer surface of the column and first flange
The outer surface of extension board defines the first contact surface with horizontal connector clamping, the outer surface of the column and described second convex
The outer surface of the second extension board between edge defines the second contact surface with horizontal connector clamping.
2. safety roof according to claim 1, it is characterised in that：The perpendicular web is prolonged always from the top of the column
Extend the bottom of the column.
3. safety roof according to claim 1, it is characterised in that：The column is steel column, the perpendicular web by
Hardened steel is made；And formed with abrasion-resistant hardcoat on first contact surface and the second contact surface.
4. safety roof according to claim 3, it is characterised in that：The column steel has following chemical composition：0.01~
0.05wt% C, 0.20 ~ 0.35wt% Si, 0.90 ~ 1.20wt% Mn, 0.20 ~ 1.0wt% Ni, 0.15 ~ 0.60wt%'s
Cr, 0.01 ~ 0.05wt% Al, 0.12 ~ 0.18wt% Mo, 0.005 ~ 0.02wt% N, 3 (C+N) wt% ~ 6 (C+N) wt%'s
V, 0 ~（0.01+2N ）Wt% Ti；Surplus is Fe and inevitable impurity.
5. safety roof according to claim 4, it is characterised in that：The column is more than 0.015wt% with C+N in steel.
6. safety roof according to claim 3, it is characterised in that：The hardened steel has consisting of：0.15~
0.22wt% C, 0.20 ~ 1.5wt% Si, 0.30 ~ 1.50wt% Mn, 0.20 ~ 0.80wt% Ni, 0.50 ~ 1.20wt%'s
Cr, 0.15 ~ 0.35wt% Cu, 0.01 ~ 0.05wt% Al, 0.02 ~ 0.10wt% Mo, 0.005 ~ 0.015wt% N, 0.02 ~
0.06wt% Nb, 0.002 ~ 0.005wt% Zr；Surplus is Fe and inevitable impurity.
7. safety roof according to claim 6, it is characterised in that：[Cu], [Ni], [Mo] and [Cr] represent respectively Cu, Ni,
Mo, Cr mass percent, and they meet with lower inequality：
2.1[Cu]+1.2[Ni]+3.8[Mo]+1.3[Cr] ≥1.6。
8. safety roof according to claim 6, it is characterised in that：Then the perpendicular web is heated by moulding by casting
To 1050 ~ 1150 DEG C be incubated 2.0 ~ 2.5 hours, with the speed water cooling not less than 20 DEG C/sec to 300 ~ 350 DEG C, it is finally heated extremely
550 ~ 700 DEG C of tempers 30 minutes, then water quenching is cooled to room temperature.
9. safety roof according to claim 3, it is characterised in that：The abrasion-resistant hardcoat is HVOF coatings, and is applied
Layer composition for 22.0 ~ 30.0wt% amorphous silica, 10.2 ~ 16.5wt% nickel, 15.0 ~ 21.0wt% aluminium, 3.8 ~
5.5wt% chromium, 1.2 ~ 1.6wt% zirconium, and the tungsten carbide of surplus.
10. safety roof according to claim 9, it is characterised in that：The thickness of the abrasion-resistant hardcoat is 20 ~ 200 μ
m。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510445171.XA CN105019674B (en) | 2015-07-27 | 2015-07-27 | A kind of safety roof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510445171.XA CN105019674B (en) | 2015-07-27 | 2015-07-27 | A kind of safety roof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105019674A CN105019674A (en) | 2015-11-04 |
| CN105019674B true CN105019674B (en) | 2017-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510445171.XA Active CN105019674B (en) | 2015-07-27 | 2015-07-27 | A kind of safety roof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU679888B1 (en) * | 1996-08-30 | 1997-07-10 | Tatsuo Ono | Shore |
| CN201103247Y (en) * | 2007-10-23 | 2008-08-20 | 中冶京唐建设有限公司 | Adjustable steel support |
| CN101375009A (en) * | 2006-01-24 | 2009-02-25 | 康比塞弗国际股份公司 | Safety post |
| CN202017352U (en) * | 2011-02-28 | 2011-10-26 | 冯贵法 | Combined supporting pillar |
| CN202247900U (en) * | 2011-08-18 | 2012-05-30 | 浙江华铁建筑安全科技股份有限公司 | Rapid connection type steel support |
-
2015
- 2015-07-27 CN CN201510445171.XA patent/CN105019674B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU679888B1 (en) * | 1996-08-30 | 1997-07-10 | Tatsuo Ono | Shore |
| CN101375009A (en) * | 2006-01-24 | 2009-02-25 | 康比塞弗国际股份公司 | Safety post |
| CN201103247Y (en) * | 2007-10-23 | 2008-08-20 | 中冶京唐建设有限公司 | Adjustable steel support |
| CN202017352U (en) * | 2011-02-28 | 2011-10-26 | 冯贵法 | Combined supporting pillar |
| CN202247900U (en) * | 2011-08-18 | 2012-05-30 | 浙江华铁建筑安全科技股份有限公司 | Rapid connection type steel support |
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| Publication number | Publication date |
|---|---|
| CN105019674A (en) | 2015-11-04 |
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