CN116441840B - Centering tool and centering method for welding - Google Patents
Centering tool and centering method for welding Download PDFInfo
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- CN116441840B CN116441840B CN202310712081.7A CN202310712081A CN116441840B CN 116441840 B CN116441840 B CN 116441840B CN 202310712081 A CN202310712081 A CN 202310712081A CN 116441840 B CN116441840 B CN 116441840B
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- 238000003466 welding Methods 0.000 title claims abstract description 115
- 238000000034 method Methods 0.000 title claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 177
- 239000010959 steel Substances 0.000 claims abstract description 177
- 230000000670 limiting effect Effects 0.000 claims description 27
- 230000007246 mechanism Effects 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 description 10
- 238000005452 bending Methods 0.000 description 8
- 239000000725 suspension Substances 0.000 description 8
- 230000000452 restraining effect Effects 0.000 description 4
- 239000012634 fragment Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
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- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/28—Beams
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention discloses a centering tool and a centering method for welding, which are applied to welding of steel beams, wherein the steel beams comprise a first steel beam and a second steel beam: each end beam is provided with two sliding clamping pieces, each sliding clamping piece axially slides along the end beam through the driving of an oil cylinder, and each sliding clamping piece is provided with a jaw for simultaneously clamping the first end part and the second end part of the steel beam; the jaw is also provided with a side opening for avoiding welding grooves of the first steel beam and the second steel beam. The invention can complete the fixation and restraint of the whole longitudinal direction of the welding seam of the steel beam through the sliding clamping piece, the outer cross beam and the inner support component, and avoid local deformation.
Description
Technical Field
The invention relates to the technical field of engineering machinery welding tools, in particular to a centering tool and a centering method for welding.
Background
Cross beams, booms (including bridge cranes and wheel cranes) and the like used in engineering machinery are usually processed by adopting a steel plate splice welding mode. In actual production, the blanking procedure adopts a cutting machine to cut two rectangular steel plates, then grooves for welding are processed on two sides of the steel plates, then the steel plates are folded into two steel members with the same opening size through a bending machine, and finally the two steel members are welded together through a welding machine.
The first and second steel beams 1 and 2 in fig. 1 are the two steel members after being bent, and the welding parts of the two steel members have been processed with grooves for welding. After the welding of the first steel beam 1 and the second steel beam 2 is finished, the boom of the wheel crane can be formed preliminarily, and the boom of the wheel crane has higher requirements on the welding process because the boom of the wheel crane bears higher load during working and the safety factor of products is higher. On the premise that the bending process and the welding process can meet the design requirements, the requirements related in the welding process are mainly expressed in that: firstly, the positioning precision before welding two steel beams needs to be ensured; secondly, the positioning accuracy of the steel beam after welding needs to be ensured, and the deformation after welding is avoided.
In order to solve the two problems, in the prior art, a keel is formed inside a steel beam, an inner supporting rod 3 in fig. 1 is placed inside the steel beam, and in order to ensure the supporting force, the length of the inner supporting rod 3 needs to be slightly larger than the inner width of the steel beam, and the inner supporting force is ensured by means of inclined extrusion; meanwhile, in order to avoid welding deformation, the inner support rod 3 also needs to be capable of providing tension for avoiding outward deformation of the steel beam after welding, so that two ends of the inner support rod 3 also need to be fixed on the inner surface of the steel beam by means of spot welding. On the other hand, since the length of the steel beam is long (usually about 10 meters depending on the tonnage of the crane), a plurality of inner support rods 3 are required, and in some cases, a channel steel is required to be arranged between the end of the inner support rod 3 and the steel beam, so as to improve the consistency and reliability of the inner support rod 3 for supporting the steel beam. After the welding is completed and the steel beam is completely cooled, the keel needs to be removed.
With the addition of a great deal of experience of a worker, although the above solution can meet the welding requirements of the existing small-tonnage crane boom. However, the operation mode is extremely original and has a large limitation. The main problems and limitations are as follows: firstly, welding an inner support rod 3 on a suspension arm and dismantling the suspension arm can influence the mechanical property of the suspension arm to a certain extent; secondly, when the keels are dismantled, the interior of the suspension arm is required to be manually accessed after welding is finished, which cannot be realized for suspension arms with smaller section sizes, the existing method is that the keels are only punched at two ends of the suspension arm with small size, so that the size precision of splicing of the whole suspension arm cannot be ensured; thirdly, the supporting force or the pulling force of the inner supporting rod on the suspension arm is completely dependent on experience and a manipulation of an operator, so that unified standards are difficult to achieve; fourthly, the boom centering mode can be used only by spot welding and then full welding (full welding), and direct full welding cannot be achieved.
In view of the above problems, there is a need in the engineering practice for a welding centering method that can overcome the four problems simultaneously.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a centering tool and a centering method for welding.
In order to achieve the above object, the present invention adopts the following technical scheme:
centering frock is used in welding is applied to the welding of girder steel, and the girder steel includes girder steel one, girder steel two: each end beam is provided with two sliding clamping pieces, each sliding clamping piece axially slides along the end beam through the driving of an oil cylinder, and each sliding clamping piece is provided with a jaw for simultaneously clamping the first end part and the second end part of the steel beam; the jaw is also provided with a side opening for avoiding welding grooves of the first steel beam and the second steel beam;
two ends of the outer cross beam are respectively and slidably connected with the two end beams, the two groups of outer cross beams are connected through a vertical pull rod, one end of the vertical pull rod is hinged with one group of outer cross beams, and the other end of the vertical pull rod is connected with the other group of outer cross beams through cross beam jackscrews;
when the sliding clamping pieces clamp the first steel beam and the second steel beam simultaneously, the distance between the two sliding clamping pieces on the same end beam is equal to the width of the steel beam, the two groups of outer cross beams are respectively extruded on two sides of an outer welding seam of the steel beam, and the inner supporting component is extruded on the inner surface of the inner welding seam of the steel beam.
Preferably, each group of outer cross beams is provided with two outer cross beams, the two outer cross beams are provided with L-shaped pressing plates, and a gap for avoiding welding seams is arranged between the two L-shaped pressing plates of the same group of outer cross beams.
Preferably, the inner support assembly comprises two inner cross beams which are arranged in parallel, at least two groups of inner supporting rods are hinged in the inner part of each inner cross beam, the end parts of the same group of inner supporting rods are hinged, the hinged parts are connected through a pull rod which is parallel to the inner cross beams, and the pull rod penetrates through one end beam and is connected with the tensioning mechanism.
Preferably, the lateral part of slip joint spare is equipped with L type limiting plate, and the both ends of interior crossbeam are equipped with the breach that is used for placing slip joint spare, and the both ends overlap joint of interior crossbeam in L type limiting plate.
Preferably, the steel beam connecting surface of the inner cross beam is also provided with a concave groove for avoiding welding seams.
Preferably, a limiting clamping sleeve detachably connected to the end beam is further arranged between the two sliding clamping pieces of the same end beam, and the length of the limiting clamping sleeve is matched with the width of the steel beam.
Preferably, the jaw opening size is larger than the thickness of the steel beam, and the jaw upper surface is provided with a jaw jackscrew for connecting the steel beam.
Preferably, a positioning structure is further arranged between the end beam and the sliding clamping piece, and comprises a positioning protrusion arranged on the end beam, a positioning groove arranged on the limiting clamping sleeve and used for being matched with the positioning protrusion.
The centering method for the welding centering tool is adopted: comprises the following steps:
the two end beams are adjusted to be in a vertical state, so that the distance between the two end beams is matched with the length of the steel beam to be welded, and the distance between two sliding clamping pieces on the same end beam is matched with the width of the steel beam;
under the condition that the two groups of outer cross beams and the inner support assembly do not interfere the first steel beam and the second steel beam, the first steel beam and the second steel beam are respectively inserted into the jaw from two sides of the sliding clamping piece;
adjusting the distance between the first steel beam and the second steel beam, clamping the grooves to be welded of the first steel beam and the second steel beam through the jaws, and aligning the grooves to be welded of the first steel beam and the second steel beam tightly;
fastening the jaw;
a limiting clamping sleeve matched with the width of the steel beam is arranged outside the end beam, and the sliding clamping piece is driven by the oil cylinder to be extruded at the end part of the limiting clamping sleeve;
the tensioning mechanism is adjusted, so that the two inner cross beams are respectively pressed on the two grooves to be welded of the steel beam in a positive mode;
connecting the vertical pull rod with the outer cross beam, and extruding the outer cross beam through a cross beam jackscrew;
the outer cross beam and the tensioning mechanism are adjusted to keep the side surfaces of the steel beams on the same plane.
The invention has the beneficial effects that: firstly, the invention can be repeatedly used, and the keel is not required to be manually entered into the steel beam before and after welding, or the keel is detached, so that the damage to the steel beam caused by the keel is avoided.
Secondly, the fixing and restraining of the whole longitudinal direction of the welding seam of the steel beam can be completed through the sliding clamping piece, the outer cross beam and the inner supporting component, local deformation is avoided, the welding seam is completely exposed outside on the premise of guaranteeing the restraining, welding can be completed at one time during gas shielded welding, welding quality is guaranteed, meanwhile stability of product welding process quality is guaranteed, and welding modes of spot welding and full-length welding after spot welding in the prior art are avoided.
Finally, the invention has the function of deflection, and can directly rotate to the other welding surface to finish welding after welding.
Drawings
FIG. 1 is a schematic view of a prior art tailor welded construction of a steel beam;
FIG. 2 is a general block diagram of the present invention;
FIG. 3 is a partial block diagram of the present invention;
FIG. 4 is a partially exploded view of FIG. 3;
FIG. 5 is an enlarged view of a portion of FIG. 4 at A;
FIG. 6 is an enlarged view of a portion of the slide fastener;
FIG. 7 is an enlarged view of a portion of the weld joint when the steel beam is attached in a centered condition;
meaning of reference numerals: 1-a first steel beam; 2-a second steel beam; 3-an inner support rod; 4-end beams; 5-sliding clamping piece; 41-slewing bearing; 42-positioning the protrusions; 51-an oil cylinder; 52-limiting clamping sleeves; 521-positioning grooves; 501-jaw; 502-jaw jackscrews; 503-L-shaped limiting plates; 504-side opening; 6-an outer cross beam; a 61-L-shaped platen; 62-a vertical pull rod; 621-a cross beam jackscrew; 7-an inner support assembly; 71-an inner cross beam; 711-notch; 712-concave grooves; 72-inner stay; 73-pull rod.
Description of the embodiments
The invention is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
As shown in fig. 2 to 7: the embodiment discloses centering frock is used in welding is applied to the welding of girder steel, and the girder steel includes girder steel 1, girder steel 2, and girder steel 1, girder steel 2 are bent by two rectangle steel sheets usually and are formed.
The embodiment comprises two end beams 4, two groups of outer cross beams 6 and an inner supporting component 7, wherein each end beam 4 is provided with two sliding clamping pieces 5, and each sliding clamping piece 5 is driven by an oil cylinder 51 to axially slide along the end beam 4. The oil cylinder 51 is fixedly arranged on the outer cross beam 6, and the power output end is connected with the sliding clamping piece 5. The sliding clamping piece 5 and the end beam 4 need to have certain matching precision, and the gap between the sliding clamping piece and the end beam is not too large.
The sliding clamping piece 5 is provided with jaws 501 for clamping the end parts of the first steel beam 1 and the second steel beam 2 simultaneously, and the jaws 501 on the two end beams 4 are oppositely arranged. The jaw 501 is provided with a side opening 504 for avoiding welding grooves of the first steel beam 1 and the second steel beam 2, and the side opening 504 is used for ensuring that a welding line is not shielded by the jaw 501 and is used for reserving a position for a welding gun.
When the sliding clamping pieces 5 clamp the first steel beam 1 and the second steel beam 2 simultaneously, the distance between the two sliding clamping pieces 5 on the same end beam 4 is equal to the width of the steel beam, and the side face of the steel beam is in a plane state. The two groups of outer cross beams 6 are respectively extruded on two sides of an outer welding seam of the steel beam (the welding seam position is not covered), the inner supporting component 7 is extruded on the inner surface of the inner welding seam of the steel beam, and the alignment of welding positions of the steel beam I1 and the steel beam II 2 is ensured through the extrusion of the inner supporting component 7 and the outer cross beams 6.
The two ends of the outer cross beams 6 can be connected with the two end beams 4 in a mode of being optionally telescopic in the end beams 4, in order to ensure the connection rigidity between the two groups of outer cross beams 6, the two groups of outer cross beams 6 are connected through a vertical pull rod 62, one end of the vertical pull rod 62 is hinged to one group of outer cross beams 6, and the other end of the vertical pull rod 62 is connected to the other group of outer cross beams 6 through a cross beam jackscrew 621. It should be noted that, since the first steel beam 1 and the second steel beam 2 need to pass through between the two sets of outer beams 6, it is necessary to connect one end of the vertical tie 62 in a hinged manner and the other end in a separable manner from the outer beams 6. On the other hand, it is also necessary to ensure that the steel beam itself does not interfere with the vertical ties 62, so that the vertical ties 62 located at the greater radial dimension need to be bent outwards accordingly.
Because it is required to press the first steel beam 1 and the second steel beam 2 simultaneously, and it is also required to ensure that the welding gun can extend into the welding seam, in this embodiment, each set of outer cross beams 6 has two, and two outer cross beams 6 are all provided with L-shaped pressing plates 61, and two L-shaped pressing plates 61 of the same set of outer cross beams 6 are provided with a gap for avoiding the welding seam, and the thickened dotted line in fig. 7 indicates the welding seam.
With reference to fig. 3 and 4: the inner support assembly 7 comprises two inner cross beams 71 which are arranged in parallel, at least two groups of inner supporting rods 72 are arranged between the two inner cross beams 71, two inner supporting rods 72 are arranged in each group, the ends of the two inner supporting rods 72, which are far away from the inner cross beams 71, are also in hinged relation, the hinged parts are connected through a pull rod 73 which is parallel to the inner cross beams 71, the pull rod 73 penetrates through one end beam 4 and is connected with a tensioning mechanism, and the tensioning mechanism usually adopts a threaded tensioning mode in the prior art. The inner support member 7 is preferably moved by a certain amount in relation to the axial direction of the end beam 4, so that the through hole in the end beam 4 for the tie rod 73 is preferably a waist-shaped hole of a certain axial length. In order to ensure that the inner support member 7 has sufficient supporting force, the length of the inner stay 72 is not longer, so that a large axial force is not generated when the inner stay 7 is in the open state, and generally, the angle between the inner stay 72 and the inner cross member 71 is not smaller than 60 degrees, but preferably not larger than 80 degrees, so that the supporting force is not easily controlled.
In order to ensure that the distances between the two sliding clamping pieces 5 on the same end beam 4 and the inner support assembly 7 (the distances are along the axial direction of the end beam 4) are equal, the two inner cross beams 71 can be synchronously supported to the welding seam of the steel beam, and meanwhile the sliding clamping pieces 5 and the inner support assembly 7 synchronously clamp and support the steel beam. Still be equipped with location structure between end beam 4 and slip joint spare 5, this location structure is including setting up in the location arch 42 of end beam 4, set up in spacing cutting ferrule 52, and be used for with location arch 42 matched with constant head tank 521 to the cross-section of location arch 42 is rectangular shape, is used for cooperating with the nut on the pull rod 73, avoids end beam 4 to be excessively worn by the nut. That is to say: the two sliding clamping pieces 5 on the same end beam 4 are driven by the two oil cylinders 51 respectively, and a fixed middle limit is guaranteed, and the middle limit is a limit clamping sleeve 52 axially fixed by the positioning bulge 42.
From the above description it can be seen that: when the limiting clamping sleeve 52 is clamped on the surface of the end beam 4, the limiting clamping sleeve 52 cannot axially slide relative to the end beam 4 due to the action of the positioning structure, and therefore two ends of the limiting clamping sleeve 52 are matched with the sliding clamping pieces 5 on two sides respectively to achieve the limiting effect. Since the transmission accuracy of the oil cylinder 51 is not high, and the distance between the corresponding jaws 501 of the two sliding clamping pieces 5 on the same end beam 4 must be equal to the width of the clamped steel beam (D in fig. 1), a limiting structure (limiting clamping sleeve 52) with a fixed length and a certain rigidity needs to be placed on the two sliding clamping pieces 5, so as to ensure the transmission accuracy by matching with the oil cylinder 51, and the distance between the two sliding clamping pieces 5 on the same end beam 4 is matched with the section size of the steel beam.
After girder one 1, girder two 2 accomplish the butt joint, because interior supporting component 7 is sheltered from by the girder steel to interior supporting component 7's quality is heavier, is difficult to control inside the girder steel, consequently the best both ends that can support component 7 in can hanging in slip joint spare 5, if need overcome following problem in order to realize this mode: firstly, the inner support component 7 and the sliding clamping pieces 5 at the two ends have certain sliding capacity, because the lengths of the steel beams with different specifications are slightly different; secondly, the inner support assembly 7 cannot affect the gripping of the jaws 501. To achieve the above objective, in this embodiment, an L-shaped limiting plate 503 is provided at a side portion of the sliding clamping member 5, notches 711 for placing the sliding clamping member 5 (corresponding to the position of the jaw 501) are provided at two ends of the inner beam 71, and two ends of the inner beam 71 overlap the L-shaped limiting plate 503. The L-shaped limiting plate 503 is used for supporting the inner support assembly 7 and limiting the inner support assembly 7 in the axial direction.
In order to avoid the welding gun from breaking through the welding groove to weld the steel beam and the inner support assembly 7 into a whole in the welding process, the steel beam connecting surface of the inner cross beam 71 in the embodiment is further provided with a concave groove 712 for avoiding welding seams.
The jaw 501 of the embodiment adopts a jaw in a fixed opening form, the opening size of the jaw is larger than the thickness of the steel beam, a jaw jackscrew 502 for connecting the steel beam is arranged on the upper surface of the jaw 501, and the steel beam is fixed by extruding the jaw jackscrew 502.
In order to enable the welded steel beam to turn over, the embodiment also has a rotating function, and the rotating function is the same as that of a positioner commonly used in the prior art. A swivel support 41 is therefore also provided at the end beam 4, the swivel support 41 being provided with gears and being externally supported by carrier rollers.
The embodiment also discloses a centering method adopting the centering tool: the method specifically comprises the following steps:
the two end beams 4 are adjusted to be in a vertical state, so that the distance between the two end beams 4 is matched with the length of the steel beam to be welded, and the distance between the two sliding clamping pieces 5 on the same end beam 4 is matched with the width of the steel beam through the corresponding oil cylinders 51.
Under the condition that two groups of outer cross beams 6 and inner support assemblies 7 do not interfere the first steel beam 1 and the second steel beam 2, the first steel beam 1 and the second steel beam 2 are respectively inserted into the jaw 501 from two sides of the sliding clamping piece 5; and then, adjusting the distance between the first steel beam 1 and the second steel beam 2 to ensure that the grooves of the first steel beam and the second steel beam are in an optimal welding state.
And the jaw jackscrews 502 are screwed so as to clamp grooves to be welded of the steel beams I and II, and after the grooves to be welded of the steel beams I and II are aligned in the clamping process, the jaw 501 is further fastened.
And a limiting clamping sleeve 52 matched with the width of the steel beam is arranged outside the end beam 4, the locking of the positioning structure is completed (a positioning groove 521 is sleeved into the positioning protrusion 42), and the sliding clamping piece 5 is driven by the oil cylinder 51 to be extruded at the end part of the limiting clamping sleeve 52. Thus, the cylinder 51 only needs enough thrust to ensure that the first steel beam 1 and the second steel beam 2 are in a correct alignment state.
And then the tensioning mechanism is adjusted to ensure that the two inner cross beams 71 are respectively pressed against the two grooves to be welded of the steel beam, and the welding seam is ensured to be positioned at the center of the concave groove 712. The opening size of the inner support assembly 7 should be matched with the width of the steel beam, and the opening size is controlled by the rotation torque of the nut on the pull rod 73, so that only the rotation torque of the nut needs to be controlled in practical application.
The vertical pull rod 62 is connected to the outer cross beam 6, and presses the outer cross beam 6 through the cross beam jackscrew 621, so that the inner and outer fixing of the steel beam welding seam is realized.
The side surfaces of the first steel beam 1 and the second steel beam 2 are coplanar through adjusting the outer cross beam 6 and the tensioning mechanism, so that the same plane of the side surfaces of the steel beams is ensured. And then welding the welding seams by adopting gas shield welding, wherein the positioning of the two steel beams can be directly finished by adopting the embodiment, so that the welding process of first spot welding and then full welding is not required, and the welding can be directly finished by adopting a full welding mode.
After one weld is welded, the turning of the steel beam can be realized through the turning support 41, so that the welding of the other weld can be directly completed through rancour.
It should be noted that, this embodiment is implemented based on the correct bending process of the first steel beam 1 and the second steel beam 2, that is: after bending, the two side surfaces (welding seam surfaces) of the steel beam 1 should be in parallel relation, and the steel beam 2 is also the same, if bending errors exist in the steel beam 1 and the steel beam 2 after bending, the steel beam 1 and the steel beam 2 should be returned to the previous working procedure and repaired by adopting a bending machine. For the steel beam with bending errors, even though the steel beam is corrected through the action of the outer cross beam 6 and the inner support assembly 7 in the embodiment, the steel beam is likely to deform after the outer cross beam 6 and the inner support assembly 7 are loosened due to the flexibility of the steel beam, so that the quality is affected.
Compared with the prior art, the embodiment has the following advantages:
first, this embodiment repeatedly usable does not need the manual work to get into the inside of girder steel before the welding, after the welding and beats the fossil fragments or tear open the fossil fragments open, avoids causing the damage to the girder steel because of beating the fossil fragments.
Secondly, the fixing and restraining of the whole longitudinal direction of the welding seam of the steel beam can be completed through the sliding clamping piece 5, the outer cross beam 6 and the inner supporting component 7, local deformation is avoided, the welding seam is completely exposed outside on the premise of guaranteeing the restraining, welding can be completed once in welding, welding quality is guaranteed, stability of product welding process quality is guaranteed, and welding modes of spot welding firstly and then full welding in the prior art are avoided.
Finally, the embodiment has a deflection function, and can be directly rotated to the other welding surface to finish welding after welding is finished.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (8)
1. Centering frock is used in welding is applied to the welding of girder steel, the girder steel includes girder steel one (1), girder steel two (2), its characterized in that: the steel beam welding device comprises two end beams (4), two groups of outer cross beams (6) and an inner supporting component (7), wherein each end beam (4) is provided with two sliding clamping pieces (5), each sliding clamping piece (5) is driven by an oil cylinder (51) to axially slide along the end beam (4), each sliding clamping piece (5) is provided with a jaw (501) for simultaneously clamping the end parts of a first steel beam (1) and a second steel beam (2), and each jaw (501) is also provided with a side opening (504) for avoiding welding grooves of the first steel beam (1) and the second steel beam (2);
two ends of the outer cross beams (6) are respectively and slidably connected with the two end beams (4), the two groups of outer cross beams (6) are connected through a vertical pull rod (62), one end of the vertical pull rod (62) is hinged with one group of outer cross beams (6), and the other end of the vertical pull rod is connected with the other group of outer cross beams (6) through a cross beam jackscrew (621);
each group of outer cross beams (6) is provided with two, the two outer cross beams (6) are provided with L-shaped pressing plates (61), and a gap for avoiding welding seams is arranged between the two L-shaped pressing plates (61) of the same group of outer cross beams (6);
when the sliding clamping pieces (5) clamp the first steel beam (1) and the second steel beam (2) simultaneously, the distance between the two sliding clamping pieces (5) on the same end beam (4) is equal to the width of the steel beam, the two L-shaped pressing plates (61) of the same group of outer cross beams (6) are respectively extruded on two sides of an outer welding seam of the steel beam, and the inner supporting component (7) is extruded on the inner surface of the inner welding seam of the steel beam.
2. The centering tool for welding as claimed in claim 1, wherein: the inner support assembly (7) comprises two inner cross beams (71) which are arranged in parallel, at least two groups of inner support rods (72) are hinged in the inner part of each inner cross beam (71), the end parts of the same group of inner support rods are hinged, the hinged parts are connected through pull rods (73) which are parallel to the inner cross beams (71), and the pull rods (73) penetrate through one end beam (4) and are connected with a tensioning mechanism.
3. The centering tool for welding as claimed in claim 2, wherein: the side of slip joint spare (5) is equipped with L type limiting plate (503), the both ends of interior crossbeam (71) are equipped with breach (711) that are used for placing slip joint spare (5), just the both ends overlap joint of interior crossbeam (71) are in L type limiting plate (503).
4. A centering tool for welding as claimed in claim 3, wherein: the steel beam connecting surface of the inner cross beam (71) is also provided with a concave groove (712) for avoiding welding seams.
5. The centering tool for welding as claimed in claim 4, wherein: and a limiting clamping sleeve (52) detachably connected to the end beam (4) is further arranged between the two sliding clamping pieces (5) of the same end beam (4), and the length of the limiting clamping sleeve (52) is matched with the width of the steel beam.
6. The centering tool for welding as claimed in claim 5, wherein: the opening size of the jaw (501) is larger than the thickness of the steel beam, and a jaw jackscrew (502) used for connecting the steel beam is arranged on the upper surface of the jaw (501).
7. The centering tool for welding as claimed in claim 6, wherein: and a positioning structure is further arranged between the end beam (4) and the sliding clamping piece (5), and comprises a positioning protrusion (42) arranged on the end beam (4), and a positioning groove (521) arranged on the limiting clamping sleeve (52) and used for being matched with the positioning protrusion (42).
8. The centering method for the welding centering tool as claimed in claim 7, wherein: comprises the following steps:
the two end beams (4) are adjusted to be in a vertical state, so that the distance between the two end beams (4) is matched with the length of a steel beam to be welded, and the distance between two sliding clamping pieces (5) on the same end beam (4) is matched with the width of the steel beam;
under the condition that two groups of outer cross beams (6) and inner supporting components (7) do not interfere the first steel beam (1) and the second steel beam (2), the first steel beam (1) and the second steel beam (2) are respectively inserted into the jaw (501) from two sides of the sliding clamping piece (5);
adjusting the distance between the first steel beam (1) and the second steel beam (2), clamping the grooves to be welded of the first steel beam (1) and the second steel beam (2) through the jaws, and aligning the grooves to be welded of the first steel beam (1) and the second steel beam (2);
a fastening jaw (501);
a limiting clamping sleeve (52) matched with the width of the steel beam is arranged outside the end beam (4), and the sliding clamping piece (5) is driven by the oil cylinder (51) to be extruded at the end part of the limiting clamping sleeve (52);
the tensioning mechanism is adjusted, so that the two inner cross beams (71) are respectively pressed on two grooves to be welded of the steel beam in a positive pressure mode;
connecting the vertical pull rod (62) with the outer cross beam (6), and extruding the outer cross beam (6) through a cross beam jackscrew (621);
the outer cross beam (6) and the tensioning mechanism are adjusted to keep the side surfaces of the steel beams on the same plane.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310712081.7A CN116441840B (en) | 2023-06-15 | 2023-06-15 | Centering tool and centering method for welding |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310712081.7A CN116441840B (en) | 2023-06-15 | 2023-06-15 | Centering tool and centering method for welding |
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| Publication Number | Publication Date |
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| CN116441840A CN116441840A (en) | 2023-07-18 |
| CN116441840B true CN116441840B (en) | 2023-08-22 |
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| CN214816069U (en) * | 2020-11-26 | 2021-11-23 | 珠海瑞凌焊接自动化有限公司 | Oven welding fixture |
| CN114654156A (en) * | 2022-03-10 | 2022-06-24 | 中平能化集团天工机械制造有限公司 | Welding positioner for wagon box of mine car |
| CN114799712A (en) * | 2022-04-22 | 2022-07-29 | 中联重科股份有限公司 | Frame tipping arrangement and frame weldment work station |
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|---|---|---|---|---|
| CN104999209A (en) * | 2015-06-30 | 2015-10-28 | 长治清华机械厂 | Crane jib spot welding positioning and clamping device |
| CN208644515U (en) * | 2018-08-30 | 2019-03-26 | 深圳前海瑞集科技有限公司 | A kind of frame vehicle front and back end carriage welding system |
| KR20210002412A (en) * | 2019-06-05 | 2021-01-08 | 주식회사화신 | Jig for welding |
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| Publication number | Publication date |
|---|---|
| CN116441840A (en) | 2023-07-18 |
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