CN106379850B - A kind of boiler hearth overhauling platform and its fence support - Google Patents
A kind of boiler hearth overhauling platform and its fence support Download PDFInfo
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- CN106379850B CN106379850B CN201610792986.XA CN201610792986A CN106379850B CN 106379850 B CN106379850 B CN 106379850B CN 201610792986 A CN201610792986 A CN 201610792986A CN 106379850 B CN106379850 B CN 106379850B
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- fence
- branch pipe
- layer branch
- springboard
- welding
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
- B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/0026—Arc welding or cutting specially adapted for particular articles or work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/235—Preliminary treatment
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/50—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for welded joints
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/50—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for welded joints
- C21D9/505—Cooling thereof
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The invention discloses a kind of boiler hearth overhauling platform and its fence supports；The fence support includes fence seat snap-gauge and fence connecting tube；The fence seat snap-gauge has the fence seat sliding slot cooperated with I-beam wing plate, offers bolt hole on the fence seat sliding slot, and by being equipped with connection bolt in bolt hole, fence seat snap-gauge is mounted on I-beam；The fence seat snap-gauge is provided with fence seat card adapter plate in the back middle position of fence seat sliding slot；The inner wall of fence connecting tube is provided with the inner tubal wall card slot with the cooperation of fence seat card adapter plate, and the outer tube wall of fence connecting tube is then provided with the outer tube wall card slot with anti-skidding effect；Fence connecting tube passes through the cooperation of inner tubal wall card slot and fence seat card adapter plate, is mounted on the back side of fence seat sliding slot.It follows that the fence support described in through the invention, fence can be mounted in main platform body.
Description
Technical field
The present invention relates to a kind of boiler hearth overhauling platforms.
Background technique
Boiler hearth overhauling platform is efficient, multi-functional high-altitude maintenance construction operation equipment in burner hearth, it is instead of biography
The scaffold of system, is operated by service personnel, and platform is made to be adjusted to required position construction operation.With structurally reasonable, user
Just, the features such as securely and reliably, work efficiency is high, light labor intensity and maintenance duration are short is to obtain in current Thermal Power Generation Industry extensively
The approved product of application is overhauled for portion each in burner hearth and is used, and large and medium-sized power station is come into operation at home.
Most of boiler hearth overhauling platform is all to pass through steel connector group using the I-shaped aluminum profile of 2A12 material
Therefore platform structure frame made of dress adds the springboard that surrounding is laid with using the platform of this structure, self weight can be up to 4
Ton is more.It is current burner hearth inspection platform development so how to reduce boiler hearth overhauling platform self weight for manufacturing enterprise
An important research direction.
In order to reduce inspection platform overall weight, in the case where considering cost, light material aluminium inexpensively is selected
Alloy connector replaces steel connector, be it would have readily occurred to a person skilled in the art that a kind of technological means, still, due to
Platform structure frame is a kind of space structure, including several lateral I-shaped aluminum profiles and several longitudinal I-shaped aluminum profiles, between each other
An entirety is constituted by the overlap joint of the aluminum coupling element of which kind of structure type, then needs those skilled in the art to carry out detailed
Research after just can determine that.
In connection, between joint face there may be dislocation, turn to etc., using integrally formed aluminum coupling element, for
The requirement of integral forming technique can be relatively high, welds aluminum profile of different shapes using welding procedure to make at this point, just may require that
At required connector；And the main points that the welding quality and this field for aluminum profile need to pay attention to, especially for
It is used in for the connector of inspection platform, welding quality directly affects the security performance of product.
Generally, inspection platform is the driving by hoist engine, and descending operation is completed in boiler furnace；Due to Boiler Furnace
Thorax internal diameter is typically all tens meters, and the Outside Dimensions of inspection platform are almost matched with boiler furnace inner wall size, therefore, maintenance
Platform area is excessively huge, and in lifting process or in operation process, even if lesser offset, periphery may also be by leading
It is touched to wheel with inboard wall of burner hearth；And installation dimension of the existing directive wheel on inspection platform is relatively fixed, it is substantially unadjustable,
Therefore, the pulley yoke of directive wheel easily damages, meanwhile, directive wheel is usually that rigidity connects with the direct connection type of inspection platform
It connects, therefore, when directive wheel is touched with inboard wall of burner hearth, easily causes the shaking of inspection platform, influence the safety of inspection platform.
Summary of the invention
In view of the above technical problems, the present invention proposes a kind of boiler hearth overhauling platform comprising several transverse direction I-beams,
Several longitudinal direction I-beams and the lateral I-beam and longitudinal I-beam are connected and fixed to a variety of connections to form platform base
Part；It can be realized the effect that overall weight is relatively light, quickly tears down and build；And it is in the inner ring of springboard, for security consideration, enclosed to be equipped
Column, therefore it provides a kind of fence support is even more important with completing the connection of fence and main platform body.
In order to achieve the above technical purposes, the present invention adopts the following technical scheme:
A kind of fence support of boiler hearth overhauling platform, including fence seat snap-gauge and fence connecting tube；The fence
Seat snap-gauge has the fence seat sliding slot cooperated with I-beam wing plate, bolt hole is offered on the fence seat sliding slot, by bolt
It is equipped with connection bolt in hole, fence seat snap-gauge is mounted on I-beam；The fence seat snap-gauge is at the back of fence seat sliding slot
Middle position is provided with fence seat card adapter plate；The inner wall of fence connecting tube is provided with the inner tubal wall with the cooperation of fence seat card adapter plate
Card slot, and the outer tube wall of fence connecting tube is then provided with the outer tube wall card slot with anti-skidding effect；Fence connecting tube passes through inner tube
The cooperation of wall card slot and fence seat card adapter plate, is mounted on the back side of fence seat sliding slot.
Further, the fence seat snap-gauge and fence connecting tube are all made of 6061-T6 aluminium alloy and are made.
Further, the end face of the fence connecting tube and the back of fence seat sliding slot are welded and fixed by welding procedure,
The welding procedure includes: to reinforce treatment process including cleaning process, pre-heating technique, welding procedure and postwelding.
The invention also discloses a kind of boiler hearth overhauling platforms, including main platform body and lifting appliance；Described is flat
Platform main body, including girder, auxiliary girder, folded beam, limit beam and springboard beam, and in the periphery of main platform body tiling springboard, springboard
Inner ring be fitted with fence；Fence is mounted in main platform body by fence support；Girder and auxiliary girder are realized by connection snap-gauge
The two intersects vertically；Folded beam realizes foldable connection by folding joint and auxiliary girder；The fence support includes fence seat
Snap-gauge and fence connecting tube；The fence seat snap-gauge has the fence seat sliding slot cooperated with I-beam wing plate, and the fence seat is sliding
Bolt hole is offered on slot, and by being equipped with connection bolt in bolt hole, fence seat snap-gauge is mounted on I-beam；It is described to enclose
Column seat snap-gauge is provided with fence seat card adapter plate in the back middle position of fence seat sliding slot；The inner wall of fence connecting tube is provided with
The inner tubal wall card slot cooperated with fence seat card adapter plate, and the outer tube wall of fence connecting tube is then provided with the outer tube with anti-skidding effect
Wall card slot；Fence connecting tube passes through the cooperation of inner tubal wall card slot and fence seat card adapter plate, is mounted on the back side of fence seat sliding slot.
The springboard is M shape springboard, including springboard platform and the support construction being set to below springboard platform；It is described
The cross section of springboard platform is arranged in isosceles trapezoid shape, and support construction is mounted on the small end of aforementioned isosceles trapezoid shape springboard platform；
The support construction includes the first support construction being arranged at springboard platform medium position, and the two sides of the first support construction are symmetrical
Ground is provided with the second support construction, third support construction, and third support construction is arranged at the end position of springboard platform, and the
Two support constructions are then located between the first support construction, third support construction；Wherein: first support construction, including the
One internal layer branch pipe, the first outer layer branch pipe；First internal layer branch pipe, the first outer layer branch pipe cross section be isosceles trapezoid shape, first
Internal layer branch pipe is socketed in the inner cavity of the first outer layer branch pipe, and the middle line of the first internal layer branch pipe, the first outer layer branch pipe is overlapped；Described
Second support construction, including the second internal layer branch pipe, the second outer layer branch pipe；The cross section of second internal layer branch pipe, the second outer layer branch pipe
It is isosceles trapezoid shape, the second internal layer branch pipe is socketed in the inner cavity of the second outer layer branch pipe, and the center of the second internal layer branch pipe is opposite
It is deviated in the center of the second outer layer branch pipe to the center position of springboard；First support construction, second support
The big end of structure is connect with springboard platform；The third support construction, section setting in the shape of a right-angled ladder, beveled end with
The connection of springboard platform.
The first internal layer branch pipe, the first outer layer branch pipe, the second internal layer branch pipe, the inclination angle of the second outer layer branch pipe are consistent,
Value is between 70-80 °.
Spacing between the bevel edge of first internal layer branch pipe and the first outer layer branch pipe bevel edge is 1-2mm；First internal layer branch pipe
Spacing between bottom edge and the bottom edge of the first outer layer branch pipe is 1-2mm.
The inclination angle of the isosceles trapezoid shape springboard platform is 60-65 °.
Spacing between the outside bevel edge of second internal layer branch pipe and the outside bevel edge of the second internal layer branch pipe is the second internal layer branch
2-4 times of spacing between the inside bevel edge of pipe and the inside bevel edge of the second internal layer branch pipe.The outside bevel edge of second internal layer branch pipe
Spacing between the outside bevel edge of the second internal layer branch pipe is 3-4mm；The inside bevel edge of second internal layer branch pipe and the second internal layer branch
Spacing 1-2mm between the inside bevel edge of pipe.
According to above-mentioned technical solution, compared with the existing technology, there is the present invention following beneficial effect to be:
The present invention provides a kind of fence support of specific structure form, can complete the connection of fence and main platform body；Its
For alumiaum article, lighter in weight can quickly be teared down and built；
The advantages of using M type springboard:
Mechanics Performance Testing:
Original springboard, the supporting mechanism having are rectangular-shaped column.
Conclusion:
By above analysis it is found that " M " type springboard reduces 9%, and maximum distortion relative to original springboard gross weight
Also decrease to some degree, it is comparatively also safer.It follows that the present invention can not only reduce cost, Er Qiean
There has also been biggish raisings for full property.
Detailed description of the invention
Fig. 1 is the main view of boiler hearth overhauling platform of the present invention；
Fig. 2 is the side view of Fig. 1；
In Fig. 1, Fig. 2,1 is single layer π word beam；2 be fence pipe；3 be bilayer π word beam；4 be springboard beam；5 connect for fence cross bar
Fitting；6 be the double card button a being mounted between fence pipe and fence upright bar；7 be limit beam；8 be fence strut；9 enclose to be mounted on
Double card button b between column pipe and fence strut；10 be fence upright bar；11 hang upright bar for branch；12 be springboard；13 be protector；14
For protection rope；16 be lifting rope；17 be spiral lockset button；18 be aluminum corner brace；19 be wirerope；20 be folding joint；21 be fence branch
Pole socket；22 be drawing suspension centre；23 be auxiliary girder；24 be A2, A3, A4 beam；25 is fixed between springboard double end；26 be A1, A5, A6 beam；27
For main suspension centre；28 be secondary suspension centre；29 be twin beams connector；30 hang upright bar seat for branch；31 be fence support；32 fill for position-limited wheel
It sets；33 be single-beam connector；34 be springboard connector；35 be folded beam；36 be springboard；37 fix for springboard single head；
Fig. 3 is the main view for connecting snap-gauge；
Wherein, 110 be the first snap-gauge；120 be the second snap-gauge；
Fig. 4 is the side view of Fig. 3；
Wherein, 1101 be first sliding groove；
Fig. 5 is the top view of Fig. 3；
Fig. 6 is that every two intersects attachment structure schematic diagram between I-beam；
Wherein, 140 be I-beam A；150 be I-beam B；
Fig. 7 is first axle connecting plate main view；
Wherein, 210 be first axle connecting plate；2102 be hinged seat；
Fig. 8 is Fig. 7 side view；
Wherein, 2101 be second sliding slot；
Fig. 9 is second hinge connecting plate main view；
Wherein, 310 be second hinge connecting plate；3101 be third sliding slot；3102 be clamping plate；3103 be hinged seat；
Figure 10 is Fig. 9 side view；
Figure 11 is foldable I-beam attachment structure schematic diagram；
Wherein, 240 be I-beam C；350 be I-beam D；
Figure 12 is the folded structural schematic diagram of foldable I-beam；
Figure 13 is the main view that wheel apparatus is limited in the present invention；
Wherein, 321 be position-limited wheel；322 be fixing buckle；
Figure 14 is the side view of Figure 12；
Wherein, 323 be pulley yoke；324 be lead rail axis；325 be spring；326 be guiding parts；327 be guide rail sleeve；328
For guide rail sleeve bottom；329 be track base；330 be connection bolt.
Figure 15 is the partial enlarged view of fence support；
Figure 16 is the structural schematic diagram of fence seat snap-gauge；
Figure 17 is the structural schematic diagram of fence connecting tube；
In figure: fence seat snap-gauge 31-1；Fence seat sliding slot 31-1a；Fence seat card adapter plate 31-1b；Fence connecting tube 31-2；
Outer tube wall card slot 31-2a；Inner tubal wall card slot 31-2b；
Figure 18 is the structural schematic diagram of I-beam (by taking A beam as an example) splicing；
Figure 19 is the structural schematic diagram of connector snap-gauge；
In Figure 18: 1-1, seperated beam a；1-2, connector snap-gauge；1-3, seperated beam b；
Figure 20 is the cross-sectional view in main one direction of suspension centre；
Figure 21 is the cross-sectional view in main another direction of suspension centre；
In Figure 20-21: 27-1, U-shaped structure；27-2, card slot；27-3, connecting hole；
Figure 22 is the structural schematic diagram for drawing suspension centre；
In figure: 22-1, card slot；22-2, reinforce column；
Figure 23 is the structural schematic diagram of springboard of the present invention；
In figure: 12-1 is springboard platform；12-2 is third support construction；12-3 is the second support construction；12-4 is first
Support construction；L is the width of isosceles trapezoid shape springboard platform big end；C is the height of isosceles trapezoid shape springboard platform；H is first
Support construction, the second support construction, the height of third support construction；A is the width of third support construction；B is the first internal layer branch
The inside bevel edge of spacing, the second internal layer branch pipe between the bevel edge of pipe and the first outer layer branch pipe bevel edge is interior with the second internal layer branch pipe
Spacing between skew back side；D is the spacing between the outside bevel edge of the second internal layer branch pipe and the outside bevel edge of the second internal layer branch pipe；
E be the first internal layer branch pipe bottom edge and the first outer layer branch pipe bottom edge between spacing, the second internal layer branch pipe bottom edge and second outside
Spacing between layer branch pipe bottom edge；F is the width of the first support construction, the second support construction bottom end；α be the first support construction,
The inclination angle of second support construction bevel edge.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Below
Description only actually at least one exemplary embodiment be it is illustrative, never as to the present invention and its application or make
Any restrictions.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.Unless specifically stated otherwise, otherwise in these realities
Apply the positioned opposite of component and step described in example.Expression formula and numerical value do not limit the scope of the invention.Meanwhile it should be bright
White, for ease of description, the size of various pieces shown in attached drawing is not to draw according to actual proportionate relationship.It is right
The technology known to person of ordinary skill in the relevant, method and apparatus may be not discussed in detail, but in the appropriate case, institute
Stating technology, method and apparatus should be considered as authorizing part of specification.In shown here and discussion all examples, appoint
What occurrence should be construed as merely illustratively, not as limitation.Therefore, the other examples of exemplary embodiment can
With different values.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation).
As shown in Figure 1 and Figure 2, as shown in Figure 1 and Figure 2, it discloses the knots of boiler hearth overhauling platform of the present invention
Structure schematic diagram, boiler hearth overhauling platform include main platform body and lifting appliance；The main platform body generally includes to lead
Beam, auxiliary girder, folded beam 35, limit beam 7 and springboard beam 4, and in the periphery of main platform body tiling springboard 12, the inner ring of springboard 12
It is fitted with fence；Fence is mounted in main platform body by fence support 31；Girder and auxiliary girder pass through both connection snap-gauge realizations
Intersect vertically；Folded beam 35 realizes foldable connection by folding joint 20 and auxiliary girder；Springboard beam 4 is also by connection snap-gauge
It is mounted on two auxiliary girders in outside.The girder, auxiliary girder include several segments fission beam, two sections of adjacent fissions
Beam a, fission beam b are spliced by connector snap-gauge.
In attached drawing, B1-B11 beam is auxiliary girder；A1-A6 beam is girder；C1-C11 beam is folded beam 35；D1, D2 are
Limit beam 7, in which:
Girder has two classes, and one kind is single layer π word beam, another kind of, is the double-deck π word beam, and A1, A5, A6 are single layer π word beams,
A2, A3, A4 are the double-deck π word beams；Certainly, girder can also select I-beam；Limit beam D1, D2 be periodically installed at girder A2,
Between A3；Auxiliary girder, folded beam select I-beam.
Each auxiliary girder is parallel to each other, and each girder is parallel to each other, and each folded beam is also parallel to each other.
Each girder intersects vertically with auxiliary girder, and passes through connection snap-gauge connection at the place of intersecting vertically.
Two girders in end, i.e. the upside that girder A1, A6 is mounted on auxiliary girder, and remaining girder is then mounted on auxiliary girder
Downside.
On girder multiple main suspension centres 27 are installed on especially beam A2, A4 for the installation convenient for lifting appliance；And just
In the folding or expansion of folded beam 35, if being then provided with dry drawing suspension centre 22 on the auxiliary girder of installation folded beam.
The connection snap-gauge at a kind of I-beam right-angled intersection is disclosed in detail in Fig. 3-Fig. 6, is in vertical phase for connecting
I-beam A140, the I-beam B150 at position are handed over, wherein I-beam A140 can be girder, and I-beam B150 can be pair
Beam, the two also can be interchanged certainly；The connection snap-gauge includes a bending plate, and there is the bending plate section to be located on different height
Two snap-gauges, be the first snap-gauge 110 and the second snap-gauge 120, one group of outside being parallel to each other of first snap-gauge 110 respectively
Edge downward bending forms first sliding groove 1101, is slidably matched between the first sliding groove 1101 and the wing plate of I-beam A140, institute
The back for stating first sliding groove 1101 has the second snap-gauge 120, the second snap-gauge 120 and I-beam towards the direction of I-beam B150
The wing plate of B150 is parallel；It is equipped with bolt round on first snap-gauge 110 and the second snap-gauge 120, by the first snap-gauge 110
On bolt round in be equipped with connection bolt so that the first snap-gauge 110 is fixed with I-beam A140 phase, by the second snap-gauge
Connection bolt is equipped in bolt round on 120, so that being fixed between I-beam B150 and I-beam A140.
Occur for accident after preventing snap-gauge connection from loosening, I-beam A140 of the present invention, I-beam B150 are in the second snap-gauge 120
Between the two neighboring bolt hole of bolt round, it is provided with foil gauge.By the way that foil gauge is arranged on the second snap-gauge 120, thus
Realization is measured in real time the contact pressure between the second snap-gauge 120 and I-beam.
1101 back of first sliding groove is connect by the cambered surface of indent with the second snap-gauge 120.The bending plate uses
Part is integrally formed made of A356 aluminium alloy.Be equally after I-beam made of aluminum alloy materials is cooperatively connected, compared to existing
Have for steel structure platform, weight mitigates significantly.The bending plate may not be integrated molding part, use 6061-T6 at this time
It is made, and is connected between the first snap-gauge 110 and the second snap-gauge 120 by welding manner.
As a further improvement of the present invention, I-beam B150 and I-beam A140 are in 120 bolt round of the second snap-gauge
Between two neighboring bolt hole, it is provided with foil gauge.By the way that foil gauge is arranged on the second snap-gauge 120, to realize to second
Contact pressure between snap-gauge 120 and I-beam is measured in real time, and accident occurs after preventing snap-gauge connection from loosening.
It, will be above-mentioned when above-mentioned connection snap-gauge is used at the girder and auxiliary girder crossover location of inspection platform of the present invention
I-beam A140 be set to girder, I-beam B150 is set to auxiliary girder, at this point, sliding between first sliding groove 1101 and the wing plate of girder
The back of cooperation, the first sliding groove 1101 has the second snap-gauge 120, the second snap-gauge 120 and auxiliary girder towards the direction of auxiliary girder
Wing plate is parallel；When then installing, by being equipped with connection bolt in the bolt round on the first snap-gauge 110, so that the first snap-gauge 110
It is mutually fixed with girder, by being equipped with connection bolt in the bolt round on the second snap-gauge 120, so that being pressed between auxiliary girder and girder
It fastens.
Fig. 7 to Figure 12 more at large discloses a kind of folding joint, be connected to I-beam C240, I-beam D350 it
Between, it can be realized the folding or expansion between I-beam C240, I-beam D350, connect including hinged first axle
Fishplate bar 210 and second hinge connecting plate 310；The first axle connecting plate 210, which has to slide with the wing plate of I-beam C240, to be connected
The second sliding slot 2101 connect；Second hinge connecting plate 310 has the third sliding slot being slidably connected with the wing plate of I-beam D350
3101 and can by I-beam C240, I-beam D350 web end splice two clamping plates 3102；Two clamping plates
3102 set up the two sides at I-beam C240, I-beam D350 web end splicing seams position separately, meanwhile, the second sliding slot
2101, bolt connecting hole, and the bolt on two clamping plates 3102 are provided on third sliding slot 3101 and two clamping plates 3102
Connecting hole is mating hole；By being equipped with connection bolt in the bolt connecting hole of second sliding slot 2101, the first axle is connected
The wing plate of fishplate bar 210 and I-beam C240 is mutually fixed；By being equipped with connection bolt in the bolt connecting hole of third sliding slot 3101,
It will mutually be fixed between the second hinge connecting plate 310 and I-beam D350；By the way that the bolt on two clamping plates 3102 connects
It is equipped with connection bolt in hole, the web end of I-beam C240 and the web end of I-beam D350 are spliced integral.
Above-mentioned I-beam C240, I-beam D350 is specific on inspection platform of the present invention, it is known that I-beam
C240 is auxiliary girder, and I-beam D350 is folded beam.
As one preferred embodiment of folding joint of the present invention, the second sliding slot 2101 passes through first axle connecting plate
210 both sides of the edge bend downward and are formed.
As a preferred embodiment of folding joint of the present invention, the both sides of the edge of the second hinge connecting plate 310 to
Under be bent to form the second sliding slot 2101 after, continue to bend to form two L clevis plates 3102 arranged opposite to each other.
As one preferred embodiment of folding joint technical solution of the present invention, the bolt that is opened up on the clamping plate 3102 connection
Hole has 6, wherein three bolt connecting holes clamping plate in equilateral triangle being arranged in the web end face of I-beam C240
3102 plate faces, remaining three bolt connecting holes also folder in equilateral triangle being arranged in the web end face of I-beam D350
3102 plate face of plate.
It is sliding with third in the L clevis plate 3102 as one preferred embodiment of folding joint technical solution of the present invention
It is straight there are one at the position that the flanging positioned opposite of slot 3101 and the side adjacent with first axle connecting plate 210 cross
The unfilled corner of angle triangle.
As one preferred embodiment of folding joint technical solution of the present invention, the back side up of second sliding slot 2101 is set
It is equipped with one piece of vertical plate a with hinge hole a；The back side up of the third sliding slot 3101 is provided with a hinge seat, described
Hinge seat includes the vertical plate b with hinge hole b of two pieces of alternate arrangements；Vertical plate a is placed between two pieces of vertical plate b, and on vertical plate a
Hinge hole b on hinge hole a and two vertical plate b is mating hole；Pass through the hinge hole on the hinge hole a and two vertical plate b on vertical plate a
Pin shaft is installed in b, first axle connecting plate 210, second hinge connecting plate 310 is hinged.
As one preferred embodiment of folding joint technical solution of the present invention, first axle connecting plate 210 and second hinge
Connecting plate 310 is all made of 6061-T6 aluminium alloy and is made；And by being welded and fixed between vertical plate a and second sliding slot 2101, vertical plate b
Also by being welded and fixed between third sliding slot 3101；Between vertical plate a and second sliding slot 2101, vertical plate b and third sliding slot 3101
Between be welded and fixed.If it is integrated product, can be made of A356 aluminium alloy.
Above-mentioned folding joint is applied to inspection platform of the present invention, the I-beam C can be set to auxiliary girder,
I-beam D is set to folded beam 35, at this point, the first axle connecting plate 210 has second to be slidably connected with the wing plate of auxiliary girder
Sliding slot 2101；Second hinge connecting plate 310 has the third sliding slot 3101 being slidably connected with the wing plate of folded beam and can incite somebody to action
Auxiliary girder, two clamping plates 3102 for folding the splicing of web end；Two clamping plates 3102 set up separately in auxiliary girder, fold web
Two sides at the splicing seams position of end, meanwhile, it is all provided on the second sliding slot 2101, third sliding slot 3101 and two clamping plates 3102
It is equipped with bolt connecting hole, and the bolt connecting hole on two clamping plates 3102 is mating hole；Pass through the bolt in second sliding slot 2101
It is equipped with connection bolt in connecting hole, the wing plate of the first axle connecting plate 210 and auxiliary girder is mutually fixed；By in third sliding slot
It is equipped with connection bolt in 3101 bolt connecting hole, will mutually be fixed between the second hinge connecting plate 310 and folded beam；Pass through
Connection bolt is equipped in the bolt connecting hole on two clamping plates 3102, by the web end of the web end of auxiliary girder and folded beam
Splicing is integral.
Referring to shown in Figure 13~Figure 14, the invention discloses a kind of elastic spacing wheel mechanisms, including position-limited wheel 321, pulley
Frame 323 and lead rail axis 324；It further include spring 325, guide rail sleeve 327 and track base 329；Wherein, position-limited wheel 321 passes through cunning
Wheel carrier 323 is connected to 324 one end of lead rail axis, and 324 other end of lead rail axis is socketed on the inner cavity of guide rail sleeve 327, and lead rail axis 324
The spring 325 is set between guide rail sleeve 327, along the limiting slot that is axially arranged with of guide rail sleeve 327 on 327 side wall of guide rail sleeve, one
Guiding parts is fixedly connected after passing through the limiting slot with the lead rail axis 324；The connection of bottom 328 of the guide rail sleeve 327 is led
Rail chair 329, the track base 329 have the sliding slot that can be connected on a side wing of I-beam, and sliding slot is equipped with bolt hole,
To fix between the track base 329 and I-beam by connecting bolt 330.
Further, lead rail axis 324 is hollow shaft；Spring 325 is placed in the inner cavity of lead rail axis 324, and one end of spring 325
Fixed with pulley yoke 323, the other end is connect after then passing through lead rail axis 324 with guide rail sleeve 327.
Further, the guiding parts 326 is a guide blot.
Further, in order to further mitigate the weight after platform integrated connection, the track base 329, guide rail sleeve 327 are selected
It is made of 6016-T6 aluminum alloy material；And track base 329, guide rail sleeve 327 be by being welded and fixed, track base 329, guide rail sleeve 327
Between be welded and fixed.
Above-mentioned elastic spacing wheel mechanism, is fitted in the surrounding of main platform body, due to having between position-limited wheel 321 and platform
The buffer structure that lead rail axis 324, spring 325 and guide rail sleeve 327 form, so that being realized between position-limited wheel 321 and I-beam
Certain energy snubber not will lead to the skill that the pulley yoke 323 of position-limited wheel 321 damages when directive wheel is touched with inboard wall of burner hearth
Art problem.
Referring to shown in Figure 15~Figure 17, the invention discloses a kind of fence supports, for fence to be mounted on main platform body
On, it connect, is mostly installed on B beam (auxiliary girder) and C beam (folded beam) with the I-beam on the outside of main platform body；It is described to enclose
Column support includes fence seat snap-gauge 31-1 and fence connecting tube 31-2；The fence seat snap-gauge 31-1 has and I-beam wing plate
Bolt hole is offered on the fence seat sliding slot 31-1a of cooperation, fence seat sliding slot 31-1a, by being equipped with connection in bolt hole
Fence seat snap-gauge 31-1 is mounted on I-beam by bolt；The fence seat snap-gauge 31-1 is at the back of fence seat sliding slot 31-1a
Middle position is provided with fence seat card adapter plate 31-1b；The inner wall of fence connecting tube 31-2 is provided with and fence seat card adapter plate 31-
The inner tubal wall card slot 31-2b of 1b cooperation, and the outer tube wall of fence connecting tube 31-2 is then provided with several uniformly distributed has anti-skidding work
Outer tube wall card slot 31-2a；Fence connecting tube 31-2 is matched by inner tubal wall card slot 31-2b and fence seat card adapter plate 31-1b's
It closes, is mounted on the back side of fence seat sliding slot 31-1a.Fence includes fence pipe, fence upright bar, is mounted on fence pipe and fence upright bar
Between double card button a, fence strut, the double card button b being mounted between fence pipe and fence strut；Wherein fence upright bar passes through button
Part is connect with fence connecting tube 31-2, and fence strut is then connect with I-beam.
The fence seat snap-gauge 31-1 and fence connecting tube 31-2 is all made of 6061-T6 aluminium alloy and is made.It is described to enclose
The end face of column connecting tube 31-2 and the back of fence seat sliding slot 31-1a are welded and fixed by welding procedure
Girder, the auxiliary girder for being commonly used for building main platform body are longer, therefore, will using connector snap-gauge 1-2 if generally requiring
Dry fission beam is spliced, and is connecting plate of the section at U-shape, the U-shaped referring specifically to Figure 18-Figure 19, the connector snap-gauge 1-2
The connecting plate of shape is connected across between the seperated beam a1-1 of adjacent two sections, seperated beam b1-3, seperated beam a1-1, seperated beam b1-3 seam
Connect, the closed end of U-shape connecting plate offers several mounting holes, and seperated beam a1-1, fission beam b1-3 correspond to U-shape connection
The mounting hole that the closed end of plate is opened up is provided with corresponding connecting hole, can be by seperated beam a1-1, seperated beam b1- using bolt
3 splicings are integral.
Figure 20-21 specifically discloses the structural schematic diagram of main suspension centre of the present invention, which includes U-shaped structure
Card slot 27-2 is accordingly offered on two side arms of 27-1, U-shaped structure 27-1, for being clamped the upper side wing of girder；Meanwhile
Two side arms of U-shaped structure 27-1 open up through connecting hole 27-3, for installing lifting appliance；It follows that the present invention is logical
The wing plate socket by U-shaped structure 27-1 on the downside of girder is crossed, realizes the connection of main suspension centre and girder, and by card slot 27-2 to master
The clamping of side wing on beam can further consolidate positioning of the main suspension centre on girder, prevent the drawstring with girder in 45 ° of inclination angles
Suspension centre is pulled to move on girder.
Figure 22 specifically discloses the structural schematic diagram of the present invention for drawing suspension centre, including card slot 22-1 and reinforcement column
The crosspiece part card slot of 22-2, the card slot 22-1 t shape, T shape card slot 22-1 can be clamped a flank of auxiliary girder
Plate, and the vertical section part card slot of T shape card slot 22-1 can clamp the web of auxiliary girder；Reinforce column 22-2 backwards to T shape
The crosspiece part of card slot extends and is formed, and reinforces column 22-2 and fix with folded beam 35, so that folded beam, auxiliary girder pass through
Suspension centre is drawn to form triangular connection structure.
Figure 23 specifically discloses the specific structure of springboard of the present invention, and the springboard is M shape springboard, including springboard
Platform 12-1 and the support construction being set to below springboard platform 12-1；The cross section of the springboard platform 12-1 is in isosceles ladder
Shape setting, support construction is mounted on the small end of aforementioned isosceles trapezoid shape springboard platform 12-1, and isosceles trapezoid shape springboard platform
The big end width of 12-1 is L, is highly c；The support construction includes first be arranged at springboard platform 12-1 medium position
Support construction 12-4, the two sides of the first support construction 12-4 are symmetrically provided with the second support construction 12-3, third support construction
12-1, third support construction 12-1 is arranged at the end position of springboard platform 12-1, and the second support construction 12-3 is then located at
Between first support construction 12-4, third support construction 12-1；Wherein: the first support construction 12-4, including in first
Layer branch pipe, the first outer layer branch pipe；First internal layer branch pipe, the first outer layer branch pipe cross section be isosceles trapezoid shape, the first internal layer
Branch pipe is socketed in the inner cavity of the first outer layer branch pipe, and the middle line of the first internal layer branch pipe, the first outer layer branch pipe is overlapped；Described second
Support construction 12-3, including the second internal layer branch pipe, the second outer layer branch pipe；The cross section of second internal layer branch pipe, the second outer layer branch pipe
It is isosceles trapezoid shape, the second internal layer branch pipe is socketed in the inner cavity of the second outer layer branch pipe, and the center of the second internal layer branch pipe is opposite
It is deviated in the center of the second outer layer branch pipe to the center position of springboard；The first support construction 12-4, described second
The big end of support construction 12-3 is connect with springboard platform 12-1；The third support construction 12-1, section are in a rectangular trapezoid
Shape setting, beveled end are connect with springboard platform 12-1.
The inclination angle of the isosceles trapezoid shape springboard platform 12-1 is 60-65 °.The first internal layer branch pipe, the first outer layer branch
Pipe, the second internal layer branch pipe, the inclination alpha of the second outer layer branch pipe are consistent, and value is between 70-80 °.First internal layer branch pipe it is oblique
The inside bevel edge of spacing, the second internal layer branch pipe between side and the first outer layer branch pipe bevel edge and the inside bevel edge of the second internal layer branch pipe
Between spacing, be denoted as b, value 1-2mm；The outside bevel edge of the outside bevel edge of second internal layer branch pipe and the second internal layer branch pipe it
Between spacing, be denoted as d, value 3-4mm.Spacing between the bottom edge of first internal layer branch pipe and the first outer layer branch pipe bottom edge,
Spacing between the bottom edge of two internal layer branch pipes and the second outer layer branch pipe bottom edge, is denoted as e, value 1-2mm；First support construction,
The width of second support construction bottom end is denoted as f, value 13-16mm；The width of third support construction is a, value 7-
10mm。
The present invention uses the advantages of M shape springboard:
Mechanics Performance Testing:
Original springboard, the supporting mechanism having are rectangular-shaped column.
Conclusion:
By above analysis it is found that " M " type springboard reduces 9%, and maximum distortion relative to original springboard gross weight
Also decrease to some degree, it is comparatively also safer.It follows that the present invention can not only reduce cost, Er Qiean
There has also been biggish raisings for full property.
In addition, can be used for connecting in snap-gauge the invention also discloses a kind of aluminum alloy piping welding method, the first snap-gauge and
Welding between two snap-gauges；It can be used in folding joint, between vertical plate a and second sliding slot, between vertical plate b and third sliding slot
Welding；It can be used in elastic spacing wheel mechanism, track base, guide rail sleeve are by being welded and fixed, the weldering between track base, guide rail sleeve
It connects；It can be used in fence support, the welding between the end face of fence connecting tube and the back of fence seat sliding slot.
Reinforce treatment process including cleaning process, pre-heating technique, welding procedure and postwelding, in which:
One, cleaning process
The present invention mainly clears up the oxide and greasy dirt on Al alloy parts surface to be welded using chemical method；Specifically
The alkalescent that the reagent being related to has alcohol, pH value is 11-13 clears up solution；Wherein: it includes that component is inclined that alkalescent, which clears up solution,
Sodium metasilicate, sodium citrate and sodium bicarbonate, the quality proportioning of sodium metasilicate, sodium citrate and sodium bicarbonate three are (10-
16):(2-4):(20-25)。
In use, using alcohol wipe Al alloy parts surface to be welded, first to remove Al alloy parts surface to be welded
Greasy dirt, then with clear water it is clean after, then aluminium alloy work to be welded cleaned up using prepared alkalescent cleaning solution above
The oxide on part surface, it is dry after finally being cleaned using clear water.
Specifically, the Al alloy parts to be welded Jing Guo alcohol wipe are immersed in 50-60 DEG C of alkalescent cleaning solution
Impregnate 10 minutes or more, it takes out workpiece cold water and rinses and remove the residue on workpiece surface, then dry 30 at 80 DEG C
Minute.
Two, pre-heating technique
It is using rigid fixture that workpiece to be welded is tight after workpiece is preheated to 150-200 DEG C using induction heating equipment
Gu on welding bench, to control welding deformation.
In view of the high-termal conductivity feature that aluminum alloy material has, rigidity fixture of the present invention, the collet having is adopted
With thermal insulation material composite plate, including fixed plate, adiabator plate and clamping plate, adiabator plate be pressed on fixed plate and clamping plate it
Between, fixed plate is mounted on fixture, and clamping plate then clamps Al alloy parts, and adiabator plate can select asbestos cystosepiment；
It follows that one aspect of the present invention may be implemented to rigidly fix with workpiece, prevent the workpiece in the welding process because of expanded by heating
Deformation；On the other hand, due to configuring asbestos cystosepiment, can make to keep the temperature in the weld seam molten bath between the welding groove of two workpiece
Time is long, is less prone to incomplete fusion and lack of penetration stomata and seminess；Effectively solve stomata and Inclusion Problem.
Three, welding procedure
The present invention carries out soldering to workpiece using variable polarity TIG welding machine.Specifically, comprising the following steps:
In view of Al alloy parts of the present invention are using 6061 material of aluminium alloy, normally, more commonly
Welding wire uses the weld metal after the welding of ER5356 welding wire using ER5356, and the hot-cracking resistance intensity having is not high, and
Another welding wire ER4043 of recommendation, although having preferable hot-cracking resistance, since it is welded for siliceous 5% alloy
Silk, therefore, in the welding process, will form Mg2Si, so that the plasticity and intensity of weld metal are influenced, in addition, ER4043 welding wire
Weld metal there are metachromatisms.
Weld metal of the invention includes 5 layers, respectively bottoming layer, intermediate layer and cap weld, in which: bottoming
Layer and cap weld use same welding wire ER5356, respectively include 2 layers, and intermediate layer then uses ER4043 welding wire, has
The technological parameter of body is as follows:
First layer uses ER5356 welding wire, and current regulation scope 250-290A, current polarity are using exchange, protective gas
Using 100%Ar (purity >=99.99%)；Gas flow is 10 ± 3 liters/min.
When first layer face of weld temperature is reduced to 220 DEG C, second layer welding is carried out, the second layer is welded using ER5356
Current values when silk, current regulation scope 250-290A, and the second layer weld are greater than current values when first layer welds；
Current polarity uses 100%Ar (purity >=99.99%) using exchange, protective gas；Gas flow is 10 ± 3 liters/min.
When second layer face of weld temperature is reduced to 230 DEG C, third layer welding is carried out, third layer is welded using ER4043
Silk, current regulation scope 250-290A, current polarity using exchange, protective gas use 100%Ar (purity >=
99.99%)；Gas flow is 10 ± 3 liters/min.
When third layer face of weld temperature is reduced to 220 DEG C, the 4th layer of welding is carried out, the 4th layer is welded using ER5356
Silk, current regulation scope 250-290A, and current values when the 4th layer of welding and the current values one when second layer welding
It causes；Current polarity uses 100%Ar (purity >=99.99%) using exchange, protective gas；Gas flow is 10 ± 3 liters/min
Clock；
To the 4th layer of face of weld temperature be reduced to Al-alloy parts preheating temperature or slightly above Al alloy parts it is pre-
When hot temperature, layer 5 welding is carried out, layer 5 uses ER5356 welding wire, current regulation scope 250-290A, and layer 5
Current values when current values when welding are welded with first layer are consistent；Current polarity is used using exchange, protective gas
100%Ar (purity >=99.99%)；Gas flow is 10 ± 3 liters/min；
The present invention is when carrying out welding procedure operation, by selecting different types of welding wire to carry out multi-layer welding, to improve
A kind of welding wire is selected to weld the mechanical property defect having；In addition, the present invention also passes through the weld metal weldering in middle layer two sides
When connecing, using symmetrically arranged technological parameter (first layer is consistent with layer 5, and the second layer and the 4th layer are consistent), so that weld seam is golden
Belonging in interlayer is symmetric construction, effectively improves the mechanical property of welded unit.
Four, postwelding reinforces treatment process
6106 aluminium alloy weldments are heat-treated using the box atmosphere furnace of HMX1100-30A immediately after the completion of welding.Tool
Body process is as follows:
The first step, solution treatment.The heating speed of stove is set as 10-15 DEG C/min, it, will after being heated to 450-520 DEG C
Substantially the weldment for being cooled to room temperature is put into heating furnace, keeps the temperature 30min.It is taken out after the completion of heat preservation, is put into water cooling pond (room temperature rapidly
20-25 DEG C) in be quenched, be cooled to room temperature, workpiece produced the time to water cooling pond no more than 1 minute from stove；
Step 2: cold water workpiece weld after cooling is placed in cryogenic treatment apparatus, with the speed of (10-15) DEG C/min
After rate is rapidly cooled to -80~-110 DEG C, half an hour is maintained, then slowly cool to -140~-160 with (3-6) DEG C/min rate
After DEG C, half an hour is maintained, (- 190) DEG C or so are finally cooled to slowly with the rate of 1-1.5 DEG C/min, maintain 2 hours, is tied
Beam subzero treatment process.
Third step will be put into heating and heat-insulating device by the processed workpiece of cryogenic treatment apparatus, with (1-3) DEG C/min's
After rate is slowly heated to (80-90) DEG C, half an hour is maintained, then be brought rapidly up with the rate of (10-15) DEG C/min to 200-220
After DEG C, 1 hour is kept the temperature；
4th step takes out workpiece, is cooled to room temperature.
(ram load selection 5kg, testing standard GB/ are measured using the hardness of HVA-10A Vickers butt joint
T2654-2008), the as-welded average hardness value commissure known to measurement result analysis is about 75.6HV, and heat affected area is about
85.2HV, by the heat treatment of postwelding, hardness Distribution value tends to uniformly, average value has reached 90.5HV, about base material hardness
98% (base material hardness is 95HV)
YDL-2000 Universal motor is used to carry out tensile property test (testing standard GB/T2649-1989, GB/T2651-
2008), as shown in the table.
Note: 101/102/103 represents base material, and 201/202/203 represents as-welded, 301/302/303 representative processing state
The tensile strength that can be seen that 6061 aluminium alloy base materials from experimental result above has reached 276MPa, elongation
It is 12%, there is good intensity and plasticity；
Although the present invention is fully considered in cleaning process, preheating procedure and welding sequence, final
In weld metal zone, tensile strength has 232MPa for the welding point tension failure position arrived, and is equivalent to the 84.06% of base material, elongation
It decreases, only 6.4%, it is seen that connector tensile strength is declined when TIG melting welding, this occurs soft with hardness test result
Change phenomenon to be consistent, and plasticity is also declined；
State joint breaking position is handled also in weld metal zone, test specimen rift direction is almost vertical with face of weld, tensile strength
Reach 264MPa, be equivalent to base material 95.65%, elongation 10.5%, connector tensile strength is restored very well, and plasticity is relatively welded
Connector is also restored.Welding post-processing restores the intensity of 6016 welded joints in aluminium alloy and plasticity recovery has very greatly
Help, can satisfy the requirement used.
Claims (8)
1. a kind of boiler hearth overhauling platform, including main platform body and lifting appliance；The main platform body, including girder,
Auxiliary girder, folded beam, limit beam and springboard beam, and in the periphery of main platform body tiling springboard, the inner ring of springboard is fitted with fence；
Fence is mounted in main platform body by fence support；Girder realizes intersecting vertically for the two by connection snap-gauge with auxiliary girder；Folding
Stoplog realizes foldable connection by folding joint and auxiliary girder；It is characterized by: the fence support with outside the main platform body
The I-beam of side connects；The fence support includes fence seat snap-gauge and fence connecting tube；The fence seat snap-gauge have with
The fence seat sliding slot of I-beam wing plate cooperation, offers bolt hole on the fence seat sliding slot, passes through and is equipped with connection in bolt hole
Fence seat snap-gauge is mounted on I-beam by bolt；The fence seat snap-gauge is set in the back middle position of fence seat sliding slot
It is equipped with fence seat card adapter plate；The inner wall of fence connecting tube is provided with the inner tubal wall card slot with the cooperation of fence seat card adapter plate, and fence
The outer tube wall of connecting tube is then provided with the outer tube wall card slot with anti-skidding effect；Fence connecting tube passes through inner tubal wall card slot and fence
The cooperation of seat card adapter plate, is mounted on the back side of fence seat sliding slot；
The springboard is M shape springboard, including springboard platform and the support construction being set to below springboard platform；The springboard
The cross section of platform is arranged in isosceles trapezoid shape, and support construction is mounted on the small end of isosceles trapezoid shape springboard platform；The support
Structure includes the first support construction being arranged at springboard platform medium position, and the two sides of the first support construction are symmetrically provided with
Second support construction, third support construction, third support construction are arranged at the end position of springboard platform, and the second support knot
Structure is then located between the first support construction, third support construction；Wherein:
First support construction, including the first internal layer branch pipe, the first outer layer branch pipe；First internal layer branch pipe, the first outer layer branch
The cross section of pipe is isosceles trapezoid shape, and the first internal layer branch pipe is socketed in the inner cavity of the first outer layer branch pipe, and the first internal layer branch pipe,
The middle line of first outer layer branch pipe is overlapped；
Second support construction, including the second internal layer branch pipe, the second outer layer branch pipe；Second internal layer branch pipe, the second outer layer branch
The cross section of pipe is isosceles trapezoid shape, and the second internal layer branch pipe is socketed in the inner cavity of the second outer layer branch pipe, and the second internal layer branch pipe
Center relative to the second outer layer branch pipe center to the center position of springboard deviate；
The big end of first support construction, second support construction is connect with springboard platform；
The third support construction, section setting in the shape of a right-angled ladder, beveled end are connect with springboard platform.
2. boiler hearth overhauling platform according to claim 1, it is characterised in that: the first internal layer branch pipe, outside first
Layer branch pipe, the second internal layer branch pipe, the inclination angle of the second outer layer branch pipe are consistent, and value is between 70-80 °.
3. boiler hearth overhauling platform according to claim 1, it is characterised in that: the bevel edge and first of the first internal layer branch pipe
Spacing between outer layer branch pipe bevel edge is 1-2mm；Between between the bottom edge of first internal layer branch pipe and the bottom edge of the first outer layer branch pipe
Away from for 1-2mm.
4. boiler hearth overhauling platform according to claim 1, it is characterised in that: the isosceles trapezoid shape springboard platform
Inclination angle is 60-65 °.
5. boiler hearth overhauling platform according to claim 1, it is characterised in that: the outside bevel edge of the second internal layer branch pipe with
Spacing between the outside bevel edge of second internal layer branch pipe is the inside bevel edge of the second internal layer branch pipe and the inside of the second internal layer branch pipe
2-4 times of spacing between bevel edge.
6. boiler hearth overhauling platform according to claim 1, it is characterised in that: the outside bevel edge of the second internal layer branch pipe with
Spacing between the outside bevel edge of second internal layer branch pipe is 3-4mm；The inside bevel edge of second internal layer branch pipe and the second internal layer branch pipe
Inside bevel edge between spacing 1-2mm.
7. boiler hearth overhauling platform according to claim 1, which is characterized in that the fence seat snap-gauge and fence
Connecting tube is all made of 6061-T6 aluminium alloy and is made.
8. boiler hearth overhauling platform according to claim 7, which is characterized in that the end face of the fence connecting tube with enclose
The back of column seat sliding slot is welded and fixed by welding procedure, the welding procedure include: including cleaning process, pre-heating technique,
Welding procedure and postwelding reinforce treatment process, in which:
One, cleaning process
Al alloy parts to be welded Jing Guo alcohol wipe are immersed in 50-60 DEG C of alkalescent cleaning solution and is impregnated 10 minutes
More than, it takes out workpiece cold water and rinses and remove the residue on workpiece surface, then dried 30 minutes at 80 DEG C；Alkalescent
Clearing up solution includes component sodium metasilicate, sodium citrate and sodium bicarbonate, sodium metasilicate, sodium citrate and sodium bicarbonate three
The quality proportioning of person is (10-16): (2-4): (20-25)；The pH value that alkalescent clears up solution is 11-13；
Two, pre-heating technique
Using induction heating equipment, after workpiece is preheated to 150-200 DEG C, work piece to be welded is existed using rigid fixture
On welding bench；
The rigid fixture, the collet having, using thermal insulation material composite plate, including fixed plate, adiabator plate and folder
Plate, adiabator plate are pressed between fixed plate and clamping plate, and fixed plate is mounted on fixture, and clamping plate then clamps aluminium alloy work
Part, adiabator plate select asbestos cystosepiment；
Three, welding procedure
Weld metal includes 5 layers, respectively bottoming layer, intermediate layer and cap weld, in which: bottoming layer and cosmetic welding
Layer uses same welding wire ER5356, respectively includes 2 layers, and intermediate layer then uses ER4043 welding wire, specific technological parameter
It is as follows:
First layer uses ER5356 welding wire, and using exchange, protective gas is used for current regulation scope 250-290A, current polarity
The Ar gas of purity >=99.99%；Gas flow is 10 ± 3 liters/min；
When first layer face of weld temperature is reduced to 220 DEG C, second layer welding is carried out, the second layer uses ER5356 welding wire, electricity
Stream adjustable range is 250-290A, and current values when second layer welding are greater than current values when first layer welds；Electric current
Polarity uses the Ar gas of purity >=99.99% using exchange, protective gas；Gas flow is 10 ± 3 liters/min；
When second layer face of weld temperature is reduced to 230 DEG C, third layer welding is carried out, third layer uses ER4043 welding wire, electricity
Stream adjustable range is 250-290A, current polarity is using exchange, and protective gas uses the Ar gas of purity >=99.99%；Gas stream
Amount is 10 ± 3 liters/min；
When third layer face of weld temperature is reduced to 220 DEG C, the 4th layer of welding is carried out, the 4th layer uses ER5356 welding wire, electricity
Stream adjustable range is 250-290A, and current values when the 4th layer of welding are consistent with current values when second layer welding；Electricity
Polarity is flowed using exchange, and protective gas uses the Ar gas of purity >=99.99%；Gas flow is 10 ± 3 liters/min；
The preheating temperature of Al-alloy parts or the preheating temperature of slightly above Al alloy parts are reduced to the 4th layer of face of weld temperature
When spending, layer 5 welding is carried out, layer 5 uses ER5356 welding wire, current regulation scope 250-290A, and layer 5 to weld
When current values when welding of current values and first layer it is consistent；Current polarity using exchange, protective gas using purity >=
99.99% Ar gas；Gas flow is 10 ± 3 liters/min；
Four, postwelding reinforces treatment process
The first step, solution treatment: being set as 10-15 DEG C/min for the heating speed of stove, will be basic after being heated to 450-520 DEG C
The weldment for being cooled to room temperature is put into heating furnace, keeps the temperature 30min；It is taken out after the completion of heat preservation, is put into 20-25 DEG C of cold water of room temperature rapidly
Chi Zhongzuo quenching treatment, is cooled to room temperature, and workpiece, which was produced from stove to the time of water cooling pond, to be no more than 1 minute；
Step 2: cold water workpiece weld after cooling is placed in cryogenic treatment apparatus, it is rapid with the rate of 10-15 DEG C/min
After being cooled to -80~-110 DEG C, half an hour is maintained, then after slowly cooling to -140~-160 DEG C with 3-6 DEG C/min rate, maintained
Half an hour is finally slowly cooled to -190 DEG C or so with the rate of 1-1.5 DEG C/min, maintains 2 hours, terminates subzero treatment
Journey；
Third step will be put into heating and heat-insulating device by the processed workpiece of cryogenic treatment apparatus, slow with the rate of 1-3 DEG C/min
Slowly after being heated to 80-90 DEG C, half an hour is maintained, then be brought rapidly up to after 200-220 DEG C with the rate of 10-15 DEG C/min, heat preservation 1
A hour；
4th step takes out workpiece, is cooled to room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610792986.XA CN106379850B (en) | 2016-08-31 | 2016-08-31 | A kind of boiler hearth overhauling platform and its fence support |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610792986.XA CN106379850B (en) | 2016-08-31 | 2016-08-31 | A kind of boiler hearth overhauling platform and its fence support |
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| Publication Number | Publication Date |
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| CN106379850A CN106379850A (en) | 2017-02-08 |
| CN106379850B true CN106379850B (en) | 2018-12-25 |
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| CN201610792986.XA Active CN106379850B (en) | 2016-08-31 | 2016-08-31 | A kind of boiler hearth overhauling platform and its fence support |
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| CN108971711A (en) * | 2018-10-19 | 2018-12-11 | 上海和达汽车配件有限公司 | A kind of welding procedure of aluminium alloy car dashboard cross member |
| CN112451870B (en) * | 2020-11-26 | 2022-02-22 | 国网山东省电力公司建设公司 | Transformer substation constructs support safety work platform |
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| JP2010185185A (en) * | 2009-02-10 | 2010-08-26 | Sekisui House Ltd | Temporary handrail and its construction method |
| CN101830415A (en) * | 2010-05-28 | 2010-09-15 | 江苏能建机电实业集团有限公司 | Multifunctional boiler hearth overhauling platform |
| CN203795346U (en) * | 2014-03-27 | 2014-08-27 | 武汉中交交通工程有限责任公司 | Frame-structure plug-type movable guardrail |
| CN205062651U (en) * | 2015-05-25 | 2016-03-02 | 浙江兴土桥梁专用装备制造有限公司 | Guardrail sleeve pipe installation mechanism |
| CN105484507B (en) * | 2015-12-30 | 2018-02-06 | 佛山市南海保达建筑机械设备有限公司 | Removable secure type construction platform |
| CN206108788U (en) * | 2016-08-31 | 2017-04-19 | 江苏能建机电实业集团有限公司 | Overhaul platform device in boiler furnace and rail support thereof |
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