CN103481026B - Crane girder processing method, girder processing unit (plant) and crane span structure remittance dress method - Google Patents

Crane girder processing method, girder processing unit (plant) and crane span structure remittance dress method Download PDF

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Publication number
CN103481026B
CN103481026B CN201310387401.2A CN201310387401A CN103481026B CN 103481026 B CN103481026 B CN 103481026B CN 201310387401 A CN201310387401 A CN 201310387401A CN 103481026 B CN103481026 B CN 103481026B
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China
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girder
bearing
link plate
length
milling machine
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CN201310387401.2A
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Chinese (zh)
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CN103481026A (en
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史之杰
张爱国
王跃文
高宝龙
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河南卫华重型机械股份有限公司
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Publication of CN103481026B publication Critical patent/CN103481026B/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q37/00Metal-working machines, or constructional combinations thereof, built-up from units designed so that at least some of the units can form parts of different machines or combinations; Units therefor in so far as the feature of interchangeability is important
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q9/00Arrangements for supporting or guiding portable metal-working machines or apparatus
    • B23Q9/0014Portable machines provided with or cooperating with guide means supported directly by the workpiece during action
    • B23Q9/0028Portable machines provided with or cooperating with guide means supported directly by the workpiece during action the guide means being fixed only on the machine
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25HWORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
    • B25H1/00Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25HWORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
    • B25H7/00Marking-out or setting-out work

Abstract

The present invention relates to crane girder processing method, girder processing unit (plant) and crane span structure remittance dress method.Wherein crane girder processing method comprises the following steps: step one, and girder link plate is weldingly fixed on the correspondence position at girder length direction two ends, makes the side of girder link plate towards outside girder length direction;Step 2, girder is supported and is placed on the girder bearing of correspondence and relies on the girder fixing device on girder bearing to fix, utilize corresponding machining apparatus to process the clamping plane for pushing up press-fit with the corresponding matching face on end carriage on the side of girder link plate;Step 3, the setting position on girder link plate processes through-thickness and runs through the thread connection hole of girder link plate.Finally, end carriage is docked with girder, use bolt end carriage and girder to be fixed together.Use technique scheme it can be avoided that have influence on the remittance packing quality of crane span structure because of welding deformation.

Description

Crane girder processing method, girder processing unit (plant) and crane span structure remittance dress method
Technical field
The present invention relates to crane girder processing method, girder processing unit (plant) and crane span structure remittance dress method.
Background technology
Loading bridge is a critical piece of crane, and including being mutually perpendicular to girder 91 and the end carriage 92 arranged, end carriage 92 is fixed on the two ends of girder 91 length direction, and equipped with cart wheel it on, crane span structure can rely on the operation on corresponding crane span structure track of cart wheel.Crane can be divided into single beam type and two-beam type according to the quantity of crane span structure middle girder 91, a kind of double girder crane crane span structure of the prior art is as shown in Fig. 1 Fig. 3, girder 91, the two butt beam 92 of trolley track 911 it is provided with including two tops, the bearing of trend of trolley track 911 is consistent with the length direction of girder 91, and the two ends of each girder 91 length direction are fixed together by girder link plate 93 with end carriage 92.The structure of girder link plate 93 is as shown in Figure 3, including for the clamping plane 931 coordinating face top press-fit with the backing plate 921 being correspondingly arranged on end carriage 92 web, top is provided with the bar shaped boss 932 exceeding described clamping plane 931, the bar shaped convex bottom surface that be connected L-shaped with clamping plane 931 is hook plane 933, it is possible to coordinate with the end face block of backing plate 921.The web of girder link plate 93, backing plate 921 and end carriage 92 is provided with the bolt-connection hole of correspondence, and corresponding bolt can pass and fasten to be fixed together three.
When crane span structure of the prior art carries out remittance dress, it is usually and first girder link plate 93 is individually machined out, then the girder link plate 93 processing bolt-connection hole is connected by bolt is fixing with the end carriage 92 processing wheel hole and bolt-connection hole, ensure that the plate face of girder link plate 93 is vertical with the axis in wheel hole, finally girder link plate 93 is welded and fixed with girder 91, completes to converge filling.But, owing to last needs is welded, the shape of whole crane span structure will be produced a very large impact by the deformation that welding produces, particularly the parameters such as cart wheel horizontal and vertical deflection, cart span are produced considerable influence, cause remittance packing quality unstable, it is impossible to being interchangeable property is assembled, modularity, mass production cannot be realized, assembly period is long, easily occurs wheel gnawing rail phenomenon, repair and maintenance inconvenience during use.
Summary of the invention
It is an object of the invention to provide a kind of crane girder processing method, a kind of girder processing unit (plant) for implementing this crane girder processing method is provided simultaneously, also provide for a kind of loading bridge remittance dress method, it is possible to avoid having influence on the remittance packing quality of crane span structure because of welding deformation.
In the present invention, crane girder processing method the technical scheme is that crane girder processing method, the method comprises the following steps: step one, girder link plate is weldingly fixed on the correspondence position at girder length direction two ends, makes the side of girder link plate towards outside girder length direction;Step 2, girder is supported and is placed on the girder bearing of correspondence and relies on the girder fixing device on girder bearing to fix, utilize corresponding machining apparatus to process the clamping plane for pushing up press-fit with the corresponding matching face on end carriage on the side of girder link plate;Step 3, the setting position on girder link plate processes through-thickness and runs through the thread connection hole of girder link plate.
Machining apparatus in step 2 is mounted in the portable boring and milling machine of girder length direction side, the installation of portable boring and milling machine comprises the following steps: the first step, the position adjusting girder makes the difference in height at trolley track length direction two ends on it meet setting value and be fixed on by girder on girder bearing, using this girder as lateral fiducial beam, defining the bearing of trend of trolley track on it is horizontal direction;Second step, determines the longitudinal direction vertical with horizontal direction and arranges corresponding longitudinal benchmark, adjusts the corresponding moving track of portable boring and milling machine to extending longitudinally.
On girder, the difference in height at trolley track length direction two ends is to utilize level gauge to measure.
nullWhen portable boring and milling machine is installed, in second step, the determination of longitudinal direction is dependent on theodolite and carries out,First the end in girder length direction both sides fixes a vertical scale respectively,Two to indulge scale all vertical with trolley track symmetrical plane in the direction of the width and two indulge the corresponding end of scale all on this symmetrical plane,Then theodolite is set in girder length direction one end,The optical axis of theodolite relies on two indulge scale equidistant with described symmetrical plane sign on scale adjust to towards horizontal direction,The theodolite optical axis is horizontally rotated 90 ° and locks horizontal rotating shaft,Then it is disposed across the benchmark steel wire of trolley track width near one end of theodolite at girder,And arrange two be parallel to each other and horizontal staff relatively-stationary with benchmark steel wire along steel wire bearing of trend interval,Observe the scale on two horizontal staffs by theodolite and indicate and adjust the position of steel wire,Until scale equidistant with benchmark steel wire indicates all on the optical axis of theodolite on two horizontal staffs,Now the bearing of trend of benchmark steel wire is the most longitudinally.
The top of described girder link plate is provided with the bar shaped convex exceeding described clamping plane, described bar shaped boss has the hook plane in the top-side being hung on corresponding backing plate of connection L-shaped with described clamping plane, also includes the step processing described hook plane in step 2.
The crane girder processing unit (plant) being used for implementing the crane girder processing method described in claim 1 in the present invention employed technical scheme comprise that, for implementing the crane girder processing unit (plant) of the crane girder processing method described in claim 1, including the girder bearing for supporting corresponding girder, described girder bearing is provided with the girder fixing device for being fixed on by girder on girder bearing;Also include the machining apparatus for processing the clamping plane for pushing up press-fit with the corresponding matching face on end carriage on the girder link plate being fixedly welded on girder length direction end.
Described girder bearing includes that the support platform that two spacing parallel arrangings are arranged, each platform that supports are respectively provided with the supporting surface for support girder length direction both side ends, and the bottom of each described support platform is equipped with adjustable for height regulation supporting leg.
Described machining apparatus is to support the portable boring and milling machine on the lathe bearing being placed on correspondence, the upper surface of described lathe bearing is installed with the adjusting means adjusting portable boring and milling machine position in the horizontal direction for pushing and withstanding movable type boring and milling machine with telescopic top-pressure part, and the upper surface of described lathe bearing is additionally provided with the lathe fixing device for being fixed on lathe bearing by portable boring and milling machine.
In the present invention, loading bridge remittance dress method employed technical scheme comprise that, loading bridge remittance dress method, the method comprises the following steps: step one, and girder link plate is weldingly fixed on the correspondence position at girder length direction two ends, makes the side of girder link plate towards outside girder length direction;Step 2, girder is supported and is placed on the girder bearing of correspondence and relies on the girder fixing device on girder bearing to fix, utilize corresponding machining apparatus to process the clamping plane for pushing up press-fit with the corresponding matching face on end carriage on the side of girder link plate;Step 3, the setting position on girder link plate processes through-thickness and runs through the thread connection hole of girder link plate;Step 4, docks end carriage with girder, makes the clamping plane on girder link plate be press-fitted merging with the top, corresponding matching face on end carriage and makes the thread connection hole on girder link plate corresponding with the respective threaded connection holes on end carriage, uses bolt end carriage and girder to be fixed together.
Described girder is provided with and is parallel to each other and two of termination alignment, machining apparatus in step 2 is mounted in the portable boring and milling machine of girder length direction side, the installation of portable boring and milling machine comprises the following steps: the first step, the position adjusting girder makes the difference in height at trolley track length direction two ends on it meet setting value and be fixed on by girder on girder bearing, using this girder as lateral fiducial beam, defining the bearing of trend of trolley track on it is horizontal direction;Second step, determines the longitudinal direction vertical with horizontal direction and arranges corresponding longitudinal benchmark, adjusts the corresponding moving track of portable boring and milling machine to extending longitudinally;Two clamping planes of two girder link plates are to machine in a same longitudinal movement of portable boring and milling machine.
The present invention uses technique scheme, first girder link plate is to fix with Main Girder Welding, then crane girder processing unit (plant) is relied on, girder it is supported on girder bearing and fixes, and on the side of girder link plate, process the clamping plane for pushing up press-fit with the corresponding matching face on end carriage, so, even if girder link plate and Main Girder Welding can produce welding deformation, but it is dependent on the clamping plane that corresponding machining apparatus is processed to form and can eliminate the impact of welding deformation, finally bolt can be utilized girder and end carriage to be assembled together by thread connection hole, therefore, it is possible to avoid girder link plate is first connected by prior art with end carriage bolt, again girder is welded, with girder link plate, the welding deformation caused, ensure that the remittance packing quality of crane span structure, it is convenient for structure design and modularized production.
Accompanying drawing explanation
Fig. 1: the structural representation of a kind of loading bridge in prior art;
The partial enlarged drawing of end carriage and main beam connecting structure at I in Fig. 2: Fig. 1;
The structural representation (length direction along end carriage is observed) of Fig. 3: Fig. 2 middle girder link plate;
Corresponding entitled of each reference in figure: 91 girders, 911 trolley tracks, 92 end carriages, 921 backing plates, 93 girder link plates, 931 clamping planes, 932 bar shaped boss, 933 hook planes.
Fig. 4: the structural representation of middle girder bearing of the present invention;
The top view of Fig. 5: Fig. 4;
The schematic cross-section of Fig. 6: square chest;
Fig. 7: machining benchmark point schematic diagram;
Fig. 8: the structural representation of lathe bearing in the present invention;
The top view of Fig. 9: Fig. 8;
Figure 10: the determination mode schematic diagram of longitudinal benchmark;
The set-up mode schematic diagram of Figure 11: flex holder;
The side view of flex holder in Figure 12: Figure 11;
The processing mode schematic diagram of Figure 13: girder link plate;
The structural representation of Figure 14: end carriage;
The top view of Figure 15: Figure 13;
A A sectional view in Figure 16: Figure 13;
Figure 17: end carriage couples schematic diagram with girder;
The top view of Figure 18: Figure 17.
Corresponding entitled of each reference in figure: 1 girder, 2 girder link plates, 3 end carriages, 4 backing plates, 5 attachment bolts, 6 thread connection holes, 7 support platform, 8 bottom support brackets, 9 square chests, 10 lathe bearings, 11 portable boring and milling machines, 12 bases, 13 slide rails, 14 processing heads, 141 main shafts, 15 adjusting meanss, 16 regulation supporting legs, 17 hangers, 18 pressing plates, 19 flex holders, 20 I-steel, 21 angle steel, 22V shape groove, 23 benchmark steel wires, 24 weights, 25 machining benchmark points, 26 trolley tracks, 27 indulge scale, 28 theodolites, 29 horizontal staffs, 30 measure point, 31 basic points.
Detailed description of the invention
The present invention implement such as shown in Fig. 4 ~ Figure 18 for one of crane girder processing unit (plant), supporting platform 7 including what two spacing parallel arrangings were arranged, be arranged on the portable boring and milling machine 11 supported outside platform 7 width, the both side ends of girder 1 length direction can be respectively supported on support platform 7.
Each platform 7 that supports all includes bottom support bracket 8, square chest 9 and for the fixing device being fixed on bottom support bracket 8 by square chest 9, square chest 9 is rectangular-shaped body structure, the edge of square chest 9 lower shoe stretches out the outer surface of both sides side plate, the corresponding pressing plate 18 of fixing device can be set up on this edge, by corresponding bolt, pressing plate 18 is fixed on bottom support bracket 8 again, square chest 9 can be pressed abd fixed on bottom support bracket 8.Use on bottom support bracket 8, stack the structure of square chest 9, it is possible to girder 1 is supported to the height set, it is simple to the termination of girder 1 both lateral sides can be with corresponding machining apparatus correspondence in the height direction, it is ensured that mach be smoothed out.The end face of each square chest 9 constitutes the supporting surface for support girder 1 length direction both side ends, and two support platform 7 constitutes the girder bearing placed in the horizontal direction for corresponding girder 1 along the cross-brace set.Adjustment and the adjustment of girder 1 web perpendicularity for ease of girder 1 two ends height, three adjustable for height regulation supporting legs 16 it are installed with respectively on the two side that each bottom support bracket 8 extends longitudinally, height by regulation regulation supporting leg 16, height and the angle of inclination that can make each supporting surface change, so that supporting girder 1 on the support surface to meet the support requirement set.The end face of each square chest 9 is provided with girder 1 fixing device for being fixed on girder bearing by girder 1 and multiple screwed hole along longitudinal arrangement, this fixing device is also adopted by the form of pressing plate 18, girder 1 lower cover can be compressed and stretch out the edge of girder 1 web, and on pressing plate 18, elongated hole is set, can pass for corresponding bolt and be tightened in screwed hole, it is achieved to being fixed of girder 1.Hang installation for convenience, the two sides that each bottom support bracket 8 extends longitudinally further respectively have two hangers 17.
Base 12 that portable milling-boring machine includes being provided with slide rail 13, the processing head 14 arranged along the bearing of trend guiding movement of slide rail 13, processing head 14 can be with cutters such as clamping boring cutter, milling cutter, drill bits, and can rotate to realize the corresponding processing to workpiece along horizontal rotating shaft by band cutter, this movable type milling-boring machine is prior art, slide rail 13 is relied on to be capable of on slide rail 13 bearing of trend the movement of big distance, thus realizing the processing of the object bigger to span, concrete structure the most no longer describes in detail.nullFor realizing the processing of the corresponding end of the girder 1 bigger to two longitudinal spans,Slide rail 13 needs along being perpendicular to horizontal being longitudinally arranged,In view of the installation of portable milling-boring machine and easy to adjust,The side of support platform horizontal direction is provided with rectangular-shaped lathe bearing 10,The long edge longitudinal extension of lathe bearing 10,Movable type boring and milling machine 11 relies on during adjustment base 12 support be placed on lathe bearing 10,And make its slide rail 13 extend longitudinally,The upper surface of lathe bearing 10 is installed with the adjusting means 15 of the longitudinal end corresponding respectively to portable 11 liang of transverse sides of boring and milling machine,Each described adjusting means 15 all includes the nut seat being provided with lateral threaded holes being fixed on lathe bearing 10 and the compression bar being linked and packed in screwed hole by screw-driven,Rotate compression bar and can make compression bar transversely stretching motion,Thus promote the corresponding longitudinal end of portable boring and milling machine 11,Realize the adjustment of slide rail 13 bearing of trend to boring and milling machine.The upper surface of lathe bearing 10 is additionally provided with the lathe fixing device for being fixed on lathe bearing 10 by portable boring and milling machine 11, and in the present embodiment, this fixing device uses the form of pressing plate 18 and bolt equally.
When carrying out loading bridge remittance dress, needing to use above-mentioned crane girder processing unit (plant) to be processed crane girder, girder assembles with corresponding end carriage after processing again, i.e. crane span structure converges and fills.Concretely comprise the following steps, first girder link plate 2 be weldingly fixed on the correspondence position at girder 1 horizontal direction two ends, make the side of girder link plate towards outside girder length direction, then carry out following operation:
A, the arrangement of girder bearing:
1, lay first and support platform 7 so that it is length direction extends longitudinally, and uses level indicator to be smoothed by this support platform 7;Use level indicator can measure the difference in height of two positions, can realize smoothing purpose by this difference in height, comprise the concrete steps that prior art, the most no longer describe in detail;2, support platform 7 place second side by side with first support platform 7 and align in the horizontal with the first support platform 7, receive the distance of big gusset at head according to girder 1 transverse ends and adjust the spacing of two support platforms 7, make the square chest 9 on support platform 7 can be supported at the big gusset of girder 1 corresponding end, be deformed to reduce after girder 1 is placed on support platform 7 as far as possible;3, regulation supporting leg 16 is relied on to adjust the height of second support platform so that it is in the range of being maintained at 1mm with first support platform difference in height, certainly, this difference can also be other values according to required precision setting.
B, the arrangement of girder:
1, a girder 1 has been lifted so that it is it is corresponding with two support platforms 7 respectively that the big gusset at head is received at two ends, relies on lower cover to be supported on two square chests 9;2, such as Figure 10, difference one basic point 31 of mark on the upper surface of trolley track 26 length direction both side ends on girder 1, by the track width at trolley track 26 length direction two ends, the point midway making trolley track width is base position, the line of two ends basic point 31 is the centrage of track, each basic point 31 arranges levelling rod, utilize the difference in height that level gauge measures at 2, adjustable supports is adjusted according to measurement result, make above-mentioned difference in height≤1mm, certainly, this difference can also be other values according to required precision setting.3, for ensureing preferably to assemble quality, the perpendicularity of girder 1 web can be checked: across the width hanging wire of girder 1 and hang weight with plumbing method, at upper and lower cover plate 50mm, measure the distance of web surface and hanging wire by Steel Ruler at web respectively and calculate difference h, at least measure at 3 along girder length, take intermediate value, require h≤4.5mm, below the lower cover of girder 1, pad the steel plate setting suitable thickness according to measurement result, until it reaches standard-required.4, pushing down lower cover with pressing plate 18, use bolt to be fixed on square chest 9 by pressing plate 18, fixed by girder 1, this girder 1 becomes datum line beam, and on it, the bearing of trend of trolley track 26 is horizontal direction.5, lift another girder 1 by its with datum line beam along longitudinal supported side by side on girder bearing, at two girder 1 both lateral sides ends difference labelling basic points, base position on two girders determines that method is identical, although trolley track 26 needs have standard compliant camber, but owing to girder length is longer, can asymmetric select with two ends base position on root girder, the position of the same corresponding end basic point 31 of two girders should be of substantially equal to the distance of track termination, and measurement result will not cause big impact;Certainly, same girder two ends basic point 31 can select along girder length direction symmetrical, and the two adjacent girder corresponding end basic points 31 distance away from corresponding girder termination can select equal.The difference in height of two corresponding in the vertical basic points 31 of two girders 1 is measured with level gauge, requirement≤2mm, adjust corresponding basic point 31 spacing on two girders 1 the most equal, and apply level gauge to survey the difference of height of two ends basic point 31, according to height difference pading plate under girder, make two ends basic point height identical, two Liangping row can be made.6, the termination by two girders 1 is the most substantially aligned, to ensure the allowance of both sides girder link plate 2.7, push down the lower cover of second girder 1 with pressing plate 18, use bolt to be fixed on square chest 9 by pressing plate 18, second girder 1 is fixed.
C, girder are rule:
1, flex holder 19 liang set is prepared, flex holder 19 includes I-steel 20 and is fixed on the angle steel 21 at I-steel 20 length direction two ends, angle steel 21 extends perpendicularly to I-steel 20, and top tilts to I-steel 20 length direction both sides, to make benchmark steel wire 23 freely hang down in suspension after benchmark steel wire 23, not with 20 liang of end in contact of I-steel, by flex holder 19 along longitudinally across two girders 1, it is supported on the trolley track 26 of two girders 1 and fixes.2, such as Figure 10, a segment distance in girder link plate 2 lateral of datum line beam, on trolley track 26, plane is made one respectively and is measured point 30, measures the symmetrical plane that point 30 passes through on trolley track width, measures spacing L the record of 2 measurement points 30;3, it is respectively provided with vertical scale 27 each measurement at point 30, it is desirable to two indulge scale 27 tries one's best the most vertical with trolley track 26, and corresponding end is all by the symmetrical plane of trolley track 26;Frame theodolite 28 is in the oblique outer segment distance of datum line beam girder link plate, calibrated horizontal;Observe two indicating values indulging scale 27 by theodolite 28, adjust the angle of theodolite 28, until observing that from theodolite 28 two measurements put that to indulge the indicating value of scale 27 at 30 identical, now, the optical axis of theodolite 28 just with trolley track centerline parallel, towards laterally.Measure the indicating value of ruler at spacing L of point 30, theodolite 28 to the distance measuring point 30 and the 2 measurement points 30 observed according to two during this, the general angle that theodolite 28 is to be rotated can be calculated under a proportional relationship, the adjustment time can be saved;Then theodolite 28 camera lens towards girder 90-degree rotation and is locked horizontal rotating shaft;Elder generation carves V-shaped groove 22 on the angle steel 21 of flex holder 19 one end, and this V-shaped groove 22 of mistake strides across the angle steel 21 at flex holder 19 two ends and hangs the benchmark steel wire 23 the most vertical with trolley track 26;Arrange two along benchmark steel wire 23 bearing of trend interval to be parallel to each other and horizontal staff relatively-stationary with benchmark steel wire 23 29, observe the scale on two horizontal staffs 29 by theodolite 28 and indicate and adjust the position of benchmark steel wire 23, until scale equidistant with benchmark steel wire 23 indicates all on the optical axis of theodolite 28 on two horizontal staffs 29, now the bearing of trend of benchmark steel wire 23 is the most longitudinally, on another angle steel 21, V-shaped groove 22 is carved after adjusting, make benchmark steel wire 23 be stuck in V-shaped groove 22, prevent benchmark steel wire 23 position when next step lathe centering from changing.The benchmark steel wire 23 part between the angle steel 21 at I-steel 20 two ends forms the datum line of longitudinal direction;4, the extension board (not shown) of 1-2mm outside trolley track 26 tip position spot welding overhangs out girder link plate 2, extension board is hung steel wire and falls in outside girder link plate 2, adjust the pendant position of steel wire so that it is through the symmetrical plane of trolley track 26 width;5, according to position and the size relative to trolley track 26 of setting of steel wire, girder link plate 2 determines machining benchmark point 25, and labelling is made in punching of drawing a design, on the basis of machining benchmark point 25, mark girder link plate processing line and hook plane machining line, can draw in girder link plate side.
D, portable boring and milling machine are installed
1, lathe bearing 10 is hung to two support platform 7 lateral outer side, make its long limit be parallel to datum line as far as possible.2, smoothing lathe bearing 10, length direction relies on level indicator smoothing, and width 1/1000mm smooths.Should height near girder 1 side.According to crane manufacturer's standard (GB/T14405), the vertical divergence angle of axletree should control in the range of following :-0.005≤tan (a)≤0.0025.When angle is positive when, crane operationally produces Light deformation, can correct this this drift angle, and stress form is relatively good.Supporting after pressing 1/1000mm smoothing on platform 7 width, the vertical divergence angle reflected on axletree is exactly tan (a)=0.001.3, between two groups of adjusting meanss 15 of correspondence that portable boring and milling machine 11 lifting is placed on lathe bearing 10, make the compression bar alignment base 12 of each adjusting means 15, adjust compression bar, promote the corresponding longitudinal end of portable boring and milling machine 11 transverse side, the realization adjustment to slide rail 13 bearing of trend of portable boring and milling machine 11, rely on the main shaft 141 stretched out to correct with benchmark steel wire 23, make boring bar vertical with longitudinal datum line.Concrete method of adjustment is: stretching out portable boring and milling machine 11 main shaft 141, fixed inner diameter micrometer on main shaft 141, be connected with micrometer by universal meter wire, another wire is connected with benchmark steel wire 23, it is ensured that universal meter has electricity.The main shaft 141 of portable boring and milling machine 11 is reached the termination near flex holder 19, and make the inside micrometer on main shaft 141 near benchmark steel wire 23, fine setting micrometer, and observe universal meter, universal meter pointer changes, illustrate that micrometer contacts with benchmark steel wire 23, record mike, lathe is reached the other end, do not allow to change the axial location of main shaft 141 during this, fine setting micrometer is to contacting with benchmark steel wire and recording mike, according to difference of reading, adjust the angle of portable boring and milling machine 11, until mike is identical at two, centering completes, now the bearing of trend of the slide rail 13 of portable boring and milling machine 11 extends longitudinally.4, push down the base 12 of portable boring and milling machine 11 with pressing plate 18, use bolt to be fixed on lathe bearing 10 by pressing plate 18.
E, girder link plate are processed
1, using portable boring and milling machine 11, rely on girder link plate processing line and hook plane machining line to mill out clamping plane, hook plane on girder link plate 2, the clamping plane of two girder link plates 2 is to machine in a same longitudinal movement of machining apparatus;The hook plane of two girder link plates 2 is also to machine in a same longitudinal movement of machining apparatus, it is ensured that the clamping plane of two girder link plates 2 is coplanar.During processing hook plane, owing to the end face of milling cutter also assists in cutting, therefore it is required that the plane that milling cutter building up by welding is out is not above clamping plane, in order to avoid cause clamping plane can not fit completely with the face that coordinates on backing plate 4 when assembling with end carriage, affect the quality of assembly precision and crane.2, the cutter changing portable boring and milling machine 11 is drilling tool, with machining benchmark point 25 as zero, and processing bolt connection holes on girder link plate 2.
F, girder end carriage assemble:
End carriage 3 is docked with girder 1, the hook plane on girder link plate 2 is made to push up press-fit with side location fit, the clamping plane at backing plate 4 top with the face that coordinates on backing plate, now the thread connection hole 6 on girder link plate 2 is corresponding with the respective threaded connection holes 6 on end carriage 3, attachment bolt 5 is used to sequentially pass through the web of end carriage 3, cushion block and the girder link plate 2 fixed with girder 1, screw the nut of correspondence, make the clamping plane of girder link plate 2 compress with the corresponding flat laminating of cushion block, complete to converge filling.Certainly, in other embodiments, backing plate 4 is nonessential mechanism, and hook plane is also nonessential structure, can also save in other embodiments.
The remittance dress method of the most above-mentioned loading bridge of embodiment of loading bridge remittance dress method, the processing method of crane girder in i.e. above-described embodiment of embodiment of crane girder processing method in the present invention.
In the above-described embodiments, girder bearing for support girder 1 includes two spaced support platforms 7 arranged side by side, in other embodiments, girder bearing can also replace to other forms, the girder bearing that the support platform 7 of such as more than three forms side by side, or support platform 7 only with a supporting surface with suitable size, it is capable of the support to girder 1, and support the regulation supporting leg 16 bottom platform 7 and can use arbitrary form, it is capable of supporting the height adjustment of platform 7, this is that those skilled in the art can realize, and this regulation supporting leg 16 is nonessential structure, can also save in other embodiments, can pad between girder 1 and girder bearing when girder 1 is adjusted and set pad.Additionally, machining apparatus in above-described embodiment is portable boring and milling machine, it is capable of the processing of the clamping plane to girder link plate 2 and the processing in bolt-connection hole, in other embodiments, this machining apparatus can also replace to other forms, as long as clamping plane and bolt-connection hole can be processed by setting requirement, the processing in clamping plane and bolt-connection hole can use different machining apparatus.And support, for machining apparatus, the lathe bearing 10 placed and can also save or replace, such as directly machining apparatus is placed on ground, as long as its slide rail 13 is adjusted to extending longitudinally.
In the embodiment of above-mentioned loading bridge remittance dress method, on girder 1, the smoothing of trolley track 26 is dependent on level gauge and carries out, machining benchmark point 25 on girder link plate 2 is dependent on hanging the mode of steel wire and determines, and the datum line extended longitudinally is dependent on flex holder 19 and theodolite is carried out, on girder 1, other modes that can also rely on of trolley track 26 complete in other embodiments, full station measuring instrument or level indicator is such as utilized to carry out, or on girder bearing, datum plane is set, measure actual height to determine, and the determination of the machining benchmark point 25 on girder link plate 2 can also replace to other forms, as long as ensure that the relativeness of machining benchmark point 25 and trolley track 26.
Furthermore, above-described embodiment middle girder 1 is provided with two, for double-girder type structure, in other embodiments, above-mentioned crane girder processing unit (plant) and processing method can also be used to be processed the girder 1 of single beam type structure, after machining, use with end carriage 3 attachment bolt 5 to be connected to carry out converging and fill.

Claims (8)

1. crane girder processing method, it is characterised in that the method comprises the following steps: step one, is weldingly fixed on the correspondence position at girder length direction two ends by girder link plate, makes the side of girder link plate towards outside girder length direction;Step 2, girder is supported and is placed on the girder bearing of correspondence and relies on the girder fixing device on girder bearing to fix, utilize corresponding machining apparatus to process the clamping plane for pushing up press-fit with the corresponding matching face on end carriage on the side of girder link plate;Step 3, setting position on girder link plate processes through-thickness and runs through the thread connection hole of girder link plate, machining apparatus in step 2 is mounted in the portable boring and milling machine of girder length direction side, the installation of portable boring and milling machine comprises the following steps: the first step, the position adjusting girder makes the difference in height at trolley track length direction two ends on it meet setting value and be fixed on by girder on girder bearing, using this girder as lateral fiducial beam, defining the bearing of trend of trolley track on it is horizontal direction;Second step, determines the longitudinal direction vertical with horizontal direction and arranges corresponding longitudinal benchmark, adjusts the corresponding moving track of portable boring and milling machine to extending longitudinally.
Crane girder processing method the most according to claim 1, it is characterised in that: on girder, the difference in height at trolley track length direction two ends is to utilize level gauge to measure.
nullCrane girder processing method the most according to claim 1,It is characterized in that: when portable boring and milling machine is installed, in second step, the determination of longitudinal direction is dependent on theodolite and carries out,First the end in girder length direction both sides fixes a vertical scale respectively,Two to indulge scale all vertical with trolley track symmetrical plane in the direction of the width and two indulge the corresponding end of scale all on this symmetrical plane,Then theodolite is set in girder length direction one end,The optical axis of theodolite relies on two indulge scale equidistant with described symmetrical plane sign on scale adjust to towards horizontal direction,The theodolite optical axis is horizontally rotated 90 ° and locks horizontal rotating shaft,Then it is disposed across the benchmark steel wire of trolley track width near one end of theodolite at girder,And arrange two be parallel to each other and horizontal staff relatively-stationary with benchmark steel wire along steel wire bearing of trend interval,Observe the scale on two horizontal staffs by theodolite and indicate and adjust the position of steel wire,Until scale equidistant with benchmark steel wire indicates all on the optical axis of theodolite on two horizontal staffs,Now the bearing of trend of benchmark steel wire is the most longitudinally.
4. according to the crane girder processing method described in claim 13 any one, it is characterized in that: the top of described girder link plate is provided with the bar shaped convex exceeding described clamping plane, described bar shaped boss has the hook plane in the top-side being hung on corresponding backing plate of connection L-shaped with described clamping plane, also includes the step processing described hook plane in step 2.
5. for implementing the crane girder processing unit (plant) of the crane girder processing method described in claim 1, it is characterized in that: include the girder bearing for supporting corresponding girder, described girder bearing is provided with the girder fixing device for being fixed on by girder on girder bearing;Also include the machining apparatus for processing the clamping plane for pushing up press-fit with the corresponding matching face on end carriage on the girder link plate being fixedly welded on girder length direction end.
Crane girder processing unit (plant) the most according to claim 5, it is characterized in that: described girder bearing includes the support platform that two spacing parallel arrangings are arranged, each platform that supports is respectively provided with the supporting surface for support girder length direction both side ends, and the bottom of each described support platform is equipped with adjustable for height regulation supporting leg.
7. according to the crane girder processing unit (plant) described in claim 5 or 6, it is characterized in that: described machining apparatus is to support the portable boring and milling machine on the lathe bearing being placed on correspondence, the upper surface of described lathe bearing is installed with the adjusting means adjusting portable boring and milling machine position in the horizontal direction for pushing and withstanding movable type boring and milling machine with telescopic top-pressure part, and the upper surface of described lathe bearing is additionally provided with the lathe fixing device for being fixed on lathe bearing by portable boring and milling machine.
8. loading bridge converges dress method, it is characterised in that the method comprises the following steps: step one, and girder link plate is weldingly fixed on the correspondence position at girder length direction two ends, makes the side of girder link plate towards outside girder length direction;Step 2, girder is supported and is placed on the girder bearing of correspondence and relies on the girder fixing device on girder bearing to fix, utilize corresponding machining apparatus to process the clamping plane for pushing up press-fit with the corresponding matching face on end carriage on the side of girder link plate;Step 3, the setting position on girder link plate processes through-thickness and runs through the thread connection hole of girder link plate;Step 4, end carriage is docked with girder, making the clamping plane on girder link plate be press-fitted merging with the top, corresponding matching face on end carriage makes the thread connection hole on girder link plate corresponding with the respective threaded connection holes on end carriage, bolt is used end carriage and girder to be fixed together, described girder is provided with and is parallel to each other and two of termination alignment, machining apparatus in step 2 is mounted in the portable boring and milling machine of girder length direction side, the installation of portable boring and milling machine comprises the following steps: the first step, the position adjusting girder makes the difference in height at trolley track length direction two ends on it meet setting value and be fixed on by girder on girder bearing, using this girder as lateral fiducial beam, defining the bearing of trend of trolley track on it is horizontal direction;Second step, determines the longitudinal direction vertical with horizontal direction and arranges corresponding longitudinal benchmark, adjusts the corresponding moving track of portable boring and milling machine to extending longitudinally;Two clamping planes of two girder link plates are to machine in a same longitudinal movement of portable boring and milling machine.
CN201310387401.2A 2013-08-30 2013-08-30 Crane girder processing method, girder processing unit (plant) and crane span structure remittance dress method CN103481026B (en)

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CN104384860A (en) * 2014-11-10 2015-03-04 安徽威萨重工机械有限公司 Production process for end beam of crane
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CN105136577B (en) * 2015-09-22 2017-07-21 河南科技大学 A kind of assembled multifunction test device
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