CN106348216B - A kind of connection snap-gauge at boiler hearth overhauling platform and its I-beam right-angled intersection - Google Patents
A kind of connection snap-gauge at boiler hearth overhauling platform and its I-beam right-angled intersection Download PDFInfo
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- CN106348216B CN106348216B CN201610792389.7A CN201610792389A CN106348216B CN 106348216 B CN106348216 B CN 106348216B CN 201610792389 A CN201610792389 A CN 201610792389A CN 106348216 B CN106348216 B CN 106348216B
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Classifications
-
- 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
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B1/00—Devices for securing together, or preventing relative movement between, constructional elements or machine parts
- F16B1/02—Means for securing elements of mechanisms after operation
Abstract
The invention discloses the connection snap-gauges at a kind of boiler hearth overhauling platform and its I-beam right-angled intersection；It includes a bending plate to connect snap-gauge, there is the bending plate section to be located at two snap-gauges on different height, it is the first snap-gauge and the second snap-gauge respectively, the outer edge downward bending that one group of first snap-gauge is mutually parallel forms the first sliding groove, it is slidably matched between the first sliding groove and the wing plate of I-beam A, the back of the first sliding groove has the second snap-gauge, the second snap-gauge parallel with the wing plate of I-beam B towards the direction of I-beam B；It is equipped with bolt round on first snap-gauge and the second snap-gauge, by being equipped with connection bolt in the bolt round on the first snap-gauge, so that the first snap-gauge is fixed with I-beam A phases, by being equipped with connection bolt in the bolt round on the second snap-gauge so that be fixed between I-beam B and I-beam A.It follows that the fixation between two I-beams at right-angled intersection may be implemented by connecting snap-gauge in the present invention.
Description
Technical field
The present invention relates to a kind of boiler hearth overhauling platforms.
Background technology
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 reasonable for structure, user
Just, securely and reliably, the features such as work efficiency is high, light labor intensity and maintenance duration are short is to be obtained in current Thermal Power Generation Industry extensively
The approved product of application is used for each portion's maintenance in burner hearth, 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 aluminium section bar of 2A12 materials
Therefore platform structure frame made of dress adds the springboard that surrounding is laid with, dead weight can be up to 4 using the platform of this structure
Ton is more.So for manufacturing enterprise, boiler hearth overhauling platform dead weight how is reduced, is current burner hearth inspection platform development
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 aluminium section bars and several longitudinal I-shaped aluminium section bars, 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, and aluminium section bar of different shapes is welded using welding procedure to make at this point, just may require that
At required connector；And the welding quality and this field for aluminium section bar need the main points paid attention to, especially for
It is used in for the connector of inspection platform, welding quality directly affects the security performance of product.
Usually, 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 smaller 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.
Invention content
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；The effect that can be realized that overall weight is relatively light, quickly tear down and build；And the connector at I-beam right-angled intersection is then wherein
One more important component, the present invention, can be by several lateral I-beams, several longitudinal works by developing a kind of connection snap-gauge
Word beam quickly and easily links into an integrated entity.
In order to achieve the above technical purposes, the present invention adopts the following technical scheme that：
Connection snap-gauge at a kind of I-beam right-angled intersection, for connecting the I-beam A being at the position that intersects vertically, work
Word beam B；Including a bending plate, there is the bending plate section to be located at two snap-gauges on different height, be the first snap-gauge respectively
The first sliding groove is formed with one group of outer edge downward bending being mutually parallel of the second snap-gauge, first snap-gauge, described first slides
It is slidably matched between slot and the wing plate of I-beam A, the back of the first sliding groove has the second card towards the direction of I-beam B
Plate, the second snap-gauge are parallel with the wing plate of I-beam B；Be equipped with bolt round on first snap-gauge and the second snap-gauge, by
Connection bolt is equipped in bolt round on first snap-gauge so that the first snap-gauge is fixed with I-beam A phases, by the second snap-gauge
On bolt round in be equipped with connection bolt so that be fixed between I-beam B and I-beam A.
As a further improvement on the present invention, the first sliding groove back is connect by the cambered surface of indent with the second snap-gauge.
As a further improvement on the present invention, the bending plate is using integrated molding part made of A356 aluminium alloys.
As a further improvement on the present invention, the bending plate is made of 6061 aluminium alloys, and the first snap-gauge and second
It is connected by welding manner between snap-gauge；Welding procedure between first snap-gauge, the second snap-gauge is：Including cleaning, preheating
Technique, welding procedure and postwelding reinforce treatment process.
As a further improvement on the present invention, the bolt round that first snap-gauge and the second snap-gauge are equipped with includes
Two bolts hole.
Another technical object of the present invention is to provide a kind of boiler hearth overhauling platforms, including main platform body and lifting to set
It is standby；The main platform body, including girder, auxiliary girder, folded beam, limit beam and springboard beam, and it is flat in the periphery of main platform body
Springboard is spread, the inner ring of springboard is fitted with fence；Fence is mounted on by fence bearing in main platform body；Girder passes through company with auxiliary girder
It connects snap-gauge and realizes intersecting vertically for the two；Folded beam realizes foldable connection by folding joint and auxiliary girder；The connection snap-gauge
Including a bending plate, there is the bending plate section to be located at two snap-gauges on different height, be the first snap-gauge and second respectively
One group of outer edge downward bending being mutually parallel of snap-gauge, first snap-gauge forms the first sliding groove, the first sliding groove and master
Be slidably matched between the wing plate of beam, the back of the first sliding groove has the second snap-gauge towards the direction of auxiliary girder, the second snap-gauge with
The wing plate of auxiliary girder is parallel；It is equipped with bolt round on first snap-gauge and the second snap-gauge, passes through the bolt on the first snap-gauge
Connection bolt is equipped in round so that the first snap-gauge is mutually fixed with girder, by being equipped in the bolt round on the second snap-gauge
Connect bolt so that be fixed between auxiliary girder and girder.
Auxiliary girder and girder are provided with foil gauge between the two neighboring bolt hole of the second snap-gauge bolt round.
The springboard is M shape springboards, including springboard platform and the support construction that is 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 both 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 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 center line of the first internal layer branch pipe, the first outer layer branch pipe overlaps；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 to the center position of springboard in the center of the second outer layer branch pipe；First support construction, the described 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
Springboard platform connects.
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.
According to above-mentioned technical solution, compared with the existing technology, the present invention has following advantageous effect：
1, the present invention develops a kind of connection snap-gauge, can realize between two I-beams at right-angled intersection position
Connection fasten, meanwhile, the mode of bolt tightening between the two, dismounting, assembling are quick convenient；
2, the present invention uses the advantages of M shape springboards：
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 larger raisings for full property.
Description of the drawings
Fig. 1 is the front 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 beams；2 be fence pipe；3 be bilayer π word beams；4 be springboard beam；5 connect for fence cross bar
Fitting；6 be the double card button a between fence pipe and fence upright bar；7 be limit beam；8 be fence strut；9 is mounted on enclosing
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
It restricts for protection；16 be lifting rope；17 be spiral lockset button；18 be aluminum corner brace；19 be steel wire rope；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 bearing；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 front 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 the first sliding groove；
Fig. 5 is the vertical view of Fig. 3；
Fig. 6 is that each 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 front view；
Wherein, 210 be first axle connecting plate；2102 be hinged seat；
Fig. 8 is Fig. 7 side views；
Wherein, 2101 be second sliding slot；
Fig. 9 is second hinge connecting plate front 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 views；
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 structural schematic diagram after foldable I-beam folds；
Figure 13 is the front 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 bearing；
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 beams 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 sectional view in one direction of main suspension centre；
Figure 21 is the 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
The height of support construction, the second support construction, 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 and the outside bevel edge of the second internal layer branch pipe 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 be the first support construction, the second support construction bottom end width；α be the first support construction,
The inclination angle of second support construction bevel edge.
Specific implementation mode
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 describes, 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 is illustrative, is never used as to the present invention and its application or makes
Any restrictions.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, 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
In vain, for ease of description, the size of attached various pieces shown in the drawings is not to be drawn according to actual proportionate relationship.It is right
Technology, method and apparatus known to person of ordinary skill in the relevant 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 illustrative, not as limitation.Therefore, the other examples of exemplary embodiment can
With with different values.
For ease of description, herein can with use space relative terms, as " ... on ", " in ... 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, if the device in attached drawing is squeezed, it is described as " 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 other different modes positioning (being rotated by 90 ° or be 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 on by fence bearing 31 in main platform body；Girder realizes the two with auxiliary girder by connecting snap-gauge
Intersect vertically；Folded beam 35 realizes foldable connection by folding joint 20 and auxiliary girder；Springboard beam 4 is also by connecting snap-gauge
On two auxiliary girders in outside.The girder, auxiliary girder include several sections of seperated beams, adjacent two sections of fissions
Beam a, fission beam b are spliced by connector snap-gauge.
In attached drawing, B1-B11 beams are auxiliary girder；A1-A6 beams are girder；C1-C11 beams are folded beam 35；D1, D2 are
Beam 7 is limited, wherein：
Girder has two classes, and one kind is single layer π word beams, another kind of, is the double-deck π words beam, and A1, A5, A6 are single layer π word beams,
A2, A3, A4 are the double-deck π words 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 mutually parallel, and each girder is mutually parallel, and each folded beam is also mutually parallel.
Each girder intersects vertically with auxiliary girder, and at the place of intersecting vertically by connecting snap-gauge connection.
Two girders in end, i.e. girder A1, A6 is mounted on the upside of auxiliary girder, and remaining girder is then mounted on auxiliary girder
Downside.
For ease of the installation of lifting appliance, on girder, multiple main suspension centres 27 are installed on especially beam A2, A4；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, and vertical phase is in for connecting
It can be girder to hand over I-beam A140, the I-beam B150 at position, wherein I-beam A140, and I-beam B150 can be pair
Beam, it is both certain to exchange；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 mutually parallel of first snap-gauge 110 respectively
Edge downward bending forms the 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 the 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 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 phases, by the second snap-gauge
Connection bolt is equipped in bolt round on 120 so that be 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, to
Realize that the contact between the second snap-gauge 120 and I-beam is measured in real time.
1101 back of the 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 alloys.Be equally after I-beam made of aluminum alloy materials is 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 by welding manner between the first snap-gauge 110 and the second snap-gauge 120.
As a further improvement on the present invention, I-beam B150 and I-beam A140 is 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 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 by above-mentioned connection snap-gauge 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, being slided between the 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 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 realize that the folding or expansion between I-beam C240, I-beam D350, including hinged first axle connect
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 that the wing plate with I-beam D350 is slidably connected
3101 and can by I-beam C240, I-beam D350 webs end splice two clamping plates 3102；Two clamping plates
3102 set up the both sides at I-beam C240, I-beam D350 webs end splicing seams position separately, meanwhile, the second sliding slot
2101, bolt connecting hole, and the bolt on two clamping plates 3102 are both 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-shaped clamping 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.
As one preferred embodiment of folding joint technical solution of the present invention, in the L-shaped clamping plate 3102, slided with third
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 the second sliding slot 2101 sets
It is equipped with one piece of riser a with hinge hole a；There are one hinge seats for the back side up setting of the third sliding slot 3101, described
Hinge seat includes the riser b with hinge hole b of two pieces of alternate arrangements；Riser a is placed between two pieces of riser b, and on riser a
Hinge hole b on hinge hole a and two riser b is mating hole；Pass through the hinge hole on the hinge hole a and two riser b on riser a
Axis pin 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 alloys and is made；And by being welded and fixed between riser a and second sliding slot 2101, riser b
Also by being welded and fixed between third sliding slot 3101；Between riser a and second sliding slot 2101, riser b and third sliding slot 3101
Between be welded and fixed.If it is integrated product, A356 aluminium alloys may be used and be made.
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 that the wing plate with auxiliary girder is slidably connected
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 will
Auxiliary girder, two clamping plates 3102 for folding the splicing of beam web end；Two clamping plates 3102 set up separately in auxiliary girder, fold beam web
Both 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 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.
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；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 327,327 side wall upper edge guide rail sleeve 327 of guide rail sleeve is axially arranged with limiting slot, and 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
There is the sliding slot that can be connected on a side wing of I-beam, sliding slot to be equipped with bolt hole for rail chair 329, the track base 329,
By connecting bolt 330 so that being fixed between the track base 329 and I-beam.
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
It is 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 select
It is made of 6016-T6 aluminum alloy materials；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 realized between position-limited wheel 321 and I-beam
Certain energy snubber, when directive wheel is touched with inboard wall of burner hearth, skill that the pulley yoke 323 of position-limited wheel 321 will not be caused to damage
Art problem.
Shown in Figure 15~Figure 17, the invention discloses a kind of fence bearings, for fence to be mounted on main platform body
On, it connect, is mostly installed on B beams (auxiliary girder) and C beams (folded beam) with the I-beam on the outside of main platform body；It is described to enclose
Column bearing 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 cooperations, 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 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 alloys 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
Be commonly used for setting for this platform main body girder, auxiliary girder it is longer, therefore, will using connector snap-gauge 1-2 if generally requiring
Dry fission beam is spliced, and referring specifically to Figure 18-Figure 19, connector snap-gauge 1-2 is a section into the connecting plate of U-shape, the U-shaped
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 seams
Connect, the blind 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 blind 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, the upper side wing for being clamped 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 on the downside of girder by U-shaped structure 27-1 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 in 45 ° of inclination angles with girder
Suspension centre is pulled to be moved 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 shapes, 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 fixed 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 concrete structure of springboard of the present invention, and the springboard is M shape springboards, 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 is arranged, and 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 positions
The both sides of support construction 12-4, 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 center line of the first internal layer branch pipe, the first outer layer branch pipe overlaps；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 to the center position of springboard in the center of the second outer layer branch pipe；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 is arranged, and beveled end is 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 the inside bevel edge and the second internal layer branch pipe of spacing, the second internal layer branch pipe between side and the first outer layer branch pipe bevel edge
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 springboards：
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 larger raisings for full property.
In addition, the invention also discloses a kind of Welded method, it can be used for connecting in snap-gauge, the first snap-gauge and the
Welding between two snap-gauges；It can be used in folding joint, between riser a and second sliding slot, between riser 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 bearing, the welding between the end face and the back of fence seat sliding slot of fence connecting tube.
Reinforce treatment process including cleaning, pre-heating technique, welding procedure and postwelding, wherein：
One, cleaning
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,
The quality proportioning of sodium metasilicate, sodium citrate and sodium bicarbonate, sodium metasilicate, sodium citrate and sodium bicarbonate three is (10-
16):(2-4):(20-25)。
In use, alcohol wipe Al alloy parts surface to be welded is first used, to remove Al alloy parts surface to be welded
Greasy dirt, after then using clear water cleaning, then aluminium alloy work to be welded cleaned up using the cleaning solution of prepared alkalescent above
The oxide on part surface, it is dry after finally using clear water cleaning.
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 flush and removes 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 using variable polarity TIG welding machine to workpiece.Specifically, include 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 wires 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, can form Mg2Si, to influence the plasticity and intensity of weld metal, in addition, ER4043 welding wires
Weld metal there are metachromatisms.
The weld metal of the present invention includes 5 layers, respectively bottoming layer, intermediate layer and cap weld, wherein：Bottoming
Layer and cap weld use same welding wire ER5356, respectively include 2 layers, and intermediate layer then uses ER4043 welding wires, tool
The technological parameter of body is as follows：
First layer uses ER5356 welding wires, 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 more 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；
Wait for 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 wires, 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 both 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 gold
It is symmetric construction to belong in interlayer, effectively improves the mechanical property of welded unit.
Four, postwelding reinforces treatment process
It is heat-treated immediately using the box 6106 aluminium alloy weldments of atmosphere furnace pair of HMX1100-30A 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 make quenching treatment, be cooled to room temperature, workpiece produced from stove to water cooling pond time be no more than 1 minute；
Second step：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 -140~-160 are slowly cooled to (3-6) DEG C/min rates
After DEG C, half an hour is maintained, (- 190) DEG C or so are slowly finally cooled to the rate of 1-1.5 DEG C/min, maintains 2 hours, knot
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 to 200-220 with the rate of (10-15) DEG C/min
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 joints
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 be uniform, average value has reached 90.5HV, about base material hardness
98% (base material hardness is 95HV)
YDL-2000 Universal motors are 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, disclosure satisfy that the requirement used.
Claims (6)
1. a kind of boiler hearth overhauling platform between girder and auxiliary girder with connection snap-gauge, including main platform body and lifting
Equipment；The main platform body, including girder, auxiliary girder, folded beam, limit beam and springboard beam, and in the periphery of main platform body
Tile springboard, and the inner ring of springboard is fitted with fence；Fence is mounted on by fence bearing in main platform body；Girder passes through with auxiliary girder
Connection snap-gauge realizes intersecting vertically for the two；Folded beam realizes foldable connection by folding joint and auxiliary girder；It is characterized in that,
The connection snap-gauge includes a bending plate, and there is the bending plate section to be located at two snap-gauges on different height, be the respectively
One group of outer edge downward bending being mutually parallel of one snap-gauge and the second snap-gauge, first snap-gauge forms the first sliding groove, described
It is slidably matched between the first sliding groove and the wing plate of girder, the back of the first sliding groove has the second card towards the direction of auxiliary girder
Plate, the second snap-gauge are parallel with the wing plate of auxiliary girder；It is equipped with bolt round on first snap-gauge and the second snap-gauge, by first
Connection bolt is equipped in bolt round on snap-gauge so that the first snap-gauge is mutually fixed with girder, passes through the spiral shell on the second snap-gauge
Connection bolt is equipped in bolt round so that be fixed between auxiliary girder and girder；
The springboard is M shape springboards, including springboard platform and the support construction that is 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 both 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 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 center line of first outer layer branch pipe overlaps；
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, which is characterized in that auxiliary girder is with girder in the second snap-gauge bolt
Between the two neighboring bolt hole of round, it is provided with foil gauge.
3. boiler hearth overhauling platform according to claim 2, which is characterized 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 °.
4. boiler hearth overhauling platform according to claim 2, which is characterized 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.
5. boiler hearth overhauling platform according to claim 1, which is characterized in that the first sliding groove back passes through indent
Cambered surface connect with the second snap-gauge；The bending plate is using integrated molding part made of A356 aluminium alloys.
6. boiler hearth overhauling platform according to claim 1, which is characterized in that the bending plate uses 6061 aluminium alloys
It is made, and is connected by welding manner between the first snap-gauge and the second snap-gauge；Welding procedure between first snap-gauge, the second snap-gauge
It is：Reinforce treatment process including cleaning, pre-heating technique, welding procedure and postwelding, wherein：
One, cleaning
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 flush and removes the residue on workpiece surface, then dried 30 minutes at 80 DEG C；Alkalescent
It includes component sodium metasilicate, sodium citrate and sodium bicarbonate, sodium metasilicate, sodium citrate and sodium bicarbonate three to clear up solution
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, wherein：Bottoming layer and cosmetic welding
Layer uses same welding wire ER5356, respectively includes 2 layers, and intermediate layer then uses ER4043 welding wires, specific technological parameter
It is as follows：
First layer uses ER5356 welding wires, and using exchange, protective gas uses 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 wires, electricity
Stream adjustable range is 250-290A, and current values when second layer welding are more 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 wires, 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 wires, electricity
Stream adjustable range is 250-290A, and current values of current values when the 4th layer of welding when being welded with the second layer are consistent；Electricity
Polarity is flowed using exchange, and protective gas uses the Ar gas of purity >=99.99%；Gas flow is 10 ± 3 liters/min；
Wait for that the 4th layer of face of weld temperature is reduced to the preheating temperature of Al-alloy parts or the preheating temperature of slightly above Al alloy parts
When spending, layer 5 welding is carried out, layer 5 uses ER5356 welding wires, current regulation scope 250-290A, and layer 5 to weld
When current values of current values when being welded with 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：The heating speed of stove is set as 10-15 DEG C/min, it, will be basic after being heated to 450-520 DEG C
The weldment for being cooled to room temperature is put into heating furnace, is kept the temperature 30min, is taken out after the completion of heat preservation, be put into the cold of 20-25 DEG C of room temperature rapidly
Make quenching treatment in pond, be cooled to room temperature, workpiece, which was produced from stove to the time of water cooling pond, to be no more than 1 minute；
Second step：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 rates, 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.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610792389.7A CN106348216B (en) | 2016-08-31 | 2016-08-31 | A kind of connection snap-gauge at boiler hearth overhauling platform and its I-beam right-angled intersection |
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| US7310920B2 (en) * | 2004-05-06 | 2007-12-25 | Hovey Jr David | Two-way architectural structural system and modular support member |
| CN2892786Y (en) * | 2006-04-30 | 2007-04-25 | 张方成 | Cross steel I-beam connecting device |
| CN201574034U (en) * | 2010-01-19 | 2010-09-08 | 洛阳佳嘉乐农业产品开发有限公司 | Connection device for hoisting an I-shaped steel guide rail on an I-shaped steel cross beam |
| 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 |
| CN104533896A (en) * | 2014-11-14 | 2015-04-22 | 常州市盈顺电子有限公司 | A bending connecting plate |
| CN206111759U (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 connecting card board thereof |
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