CN111660023B - Machining method of crane turntable structure - Google Patents
Machining method of crane turntable structure Download PDFInfo
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- CN111660023B CN111660023B CN202010322456.5A CN202010322456A CN111660023B CN 111660023 B CN111660023 B CN 111660023B CN 202010322456 A CN202010322456 A CN 202010322456A CN 111660023 B CN111660023 B CN 111660023B
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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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
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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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/003—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to controlling of welding distortion
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/84—Slewing gear
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Abstract
The disclosure provides a machining method of a turntable structure of a crane, and belongs to the technical field of machining. And sequentially welding the meter connecting assembly, the side connecting assembly and the bottom connecting assembly. The small-deformation assembly is firstly independently welded, so that larger deformation is avoided. And then spot welding the surface connecting assembly, the side connecting assembly and the bottom connecting assembly in sequence to perform primary positioning, wherein each side connecting plate in the side connecting assembly is partially positioned in a side positioning hole in each connecting supporting plate in the surface connecting assembly, and the positioning and supporting functions are also realized. And finally, spot welding the anti-deformation plate to increase the connection stability and avoid large deformation during subsequent welding, and welding the surface connecting assembly, the side connecting assembly and the bottom connecting assembly with the anti-deformation plate, the lubricating support and the lifting support to obtain the turntable structure of the crane. The whole deformation of the crane turntable structure is controlled during welding, so that the processing quality of the crane turntable structure can be ensured, and the rejection rate is reduced.
Description
Technical Field
The disclosure relates to the technical field of machining, in particular to a machining method of a turntable structure of a crane.
Background
The crane is a very widely applied machine, the crane at least comprises an arm support, a crane turntable structure and a supporting platform, the arm support is usually hinged on the crane turntable structure, the crane turntable structure is connected on the crane supporting platform, and the crane turntable structure plays an important role in supporting and transmitting force. The whole quality of the turntable structure of the crane needs to be guaranteed, and the whole stable work of the crane can be guaranteed.
In the related art, the crane turntable structure is usually formed by machining by using an integral machine, but errors are easy to occur during machining, so that the crane turntable structure is easy to scrap.
Disclosure of Invention
The embodiment of the disclosure provides a machining method of a turntable structure of a crane, which can ensure the machining quality of the turntable structure of the crane and reduce the rejection rate. The technical scheme is as follows:
the embodiment of the disclosure provides a machining method of a turntable structure of a crane, which comprises the following steps:
the method comprises the following steps of providing a surface connecting assembly, a side connecting assembly, a bottom connecting assembly, an anti-deformation plate, an oil lubricating support and a lifting support, wherein the surface connecting assembly comprises an oil lubricating support mounting plate, a lifting support mounting plate and two connecting support plates, each connecting support plate is provided with a side positioning hole, the side connecting assembly comprises two side connecting plates and two arm support hinged lug plates, and the bottom connecting assembly comprises a supporting bottom plate and two side supporting plates;
welding the meter connecting assembly, connecting the lubricating support mounting plate with one end of the lifting support mounting plate, respectively connecting the two connecting support plates with two sides of the lifting support mounting plate, and connecting one of the two connecting support plates with the lubricating support mounting plate;
welding the side connecting components, wherein the two side connecting plates are correspondingly connected with the two arm support hinged lug plates one by one;
the bottom connecting assembly is welded, and the two side supporting plates are connected to the supporting bottom plate at intervals;
spot-welding the surface connecting assembly and the side connecting assembly, spot-welding the side connecting assembly and the bottom connecting assembly, wherein the side connecting assembly is positioned between the surface connecting assembly and the bottom connecting assembly, the two connecting support plates are connected with the two side connecting plates in a one-to-one correspondence manner, each side connecting plate is partially positioned in a side positioning hole on each connecting support plate, the two side connecting plates are connected with the supporting base plate, the two side connecting plates are connected with the two side support plates in a one-to-one correspondence manner, and the two arm support hinged lug plates are connected with the supporting base plate;
spot welding the deformation preventing plate and the two side connecting plates, and spot welding the deformation preventing plate and the two side supporting plates;
welding the surface connecting assembly, the side connecting assembly, the bottom connecting assembly and the anti-deformation plate;
and welding the lubricating oil support and the lubricating oil support mounting plate, and welding the lifting support and the lifting support mounting plate.
Optionally, spot welding the watch connection assembly and the side connection assembly, comprising:
inserting one of the side connection plates into a side positioning hole in one of the connection support plates and inserting the other of the side connection plates into a side positioning hole in the other of the connection support plates;
adjusting the positions of the two side connecting plates;
and spot welding the two connecting support plates and the two side connecting plates.
Optionally, the adjusting the positions of the two side connection plates includes:
and adjusting two side connecting plates by using a plumb line to match with a measuring ruler until the distance between the two side connecting plates is kept consistent in the length direction of the lifting support mounting plate.
Optionally, before the two connecting support plates and the two side connecting plates are spot-welded, one triangular support plate is spot-welded on two sides of each side connecting plate.
Optionally, the spot welding the deformation prevention plate with the two side connection plates, the spot welding the deformation prevention plate with the two side support plates, include:
dividing the anti-deformation plate into a middle anti-deformation part and two bottom anti-deformation parts, wherein each bottom anti-deformation part is provided with a bottom support groove;
sleeving a bottom support groove of one bottom anti-deformation part on one side supporting plate and performing spot welding, sleeving a bottom support groove of the other bottom anti-deformation part on the other side supporting plate and performing spot welding, and finally performing spot welding on the two bottom anti-deformation parts;
spot welding two ends of the middle anti-deformation part with the two side connecting plates respectively;
spot-welding the middle deformation preventing portion and the two bottom deformation preventing portions.
Optionally, the welding the surface connection assembly, the side connection assembly, the bottom connection assembly and the deformation prevention plate includes:
welding the two side connecting plates and the two connecting supporting plates;
welding the two side connecting plates and the two side supporting plates;
welding the deformation-preventing plate and the two side supporting plates;
and welding the deformation preventing plate and the two side connecting plates.
Optionally, spot welding the watch connection assembly and the side connection assembly, comprising:
providing a welding platform, and spot-welding the surface connecting component and the side connecting component on the welding platform.
Optionally, the welding platform includes a rectangular support frame and a support rod, and two ends of the support rod are respectively connected to the middle points of two sides of the rectangular support frame.
Optionally, prior to spot welding the watch connection assembly and the side connection assembly,
two opposite arc-shaped plates are spot-welded on the surface of the lifting support mounting plate, and each two ends of each arc-shaped plate are respectively spot-welded on the two connecting supporting plates.
Optionally, before the lubricating oil support and the lubricating oil support mounting plate are welded, a plurality of rib plates are welded between the arm support hinge lug plate and the support base plate.
The beneficial effects brought by the technical scheme provided by the embodiment of the disclosure at least comprise:
when the crane turntable structure is machined, the crane turntable structure is divided into a surface connecting assembly, a side connecting assembly, a bottom connecting assembly, an anti-deformation plate, an oil lubricating support and a lifting support. Firstly, welding a lubricating support mounting plate and a lifting support mounting plate in a surface connecting assembly with two connecting support plates, then welding two side connecting plates and two arm support hinged lug plates in a side connecting assembly, and finally welding a support bottom plate and two side support plates in a bottom connecting assembly. The assemblies with smaller deformation are firstly grouped for independent welding, so that larger deformation can be avoided subsequently. And then spot welding the surface connecting component and the side connecting component in sequence, spot welding the side connecting component and the bottom connecting component, and preliminarily positioning the surface connecting component, the side connecting component and the bottom connecting component, wherein each side connecting plate in the side connecting component is partially positioned in a side positioning hole in each connecting supporting plate in the surface connecting component, and the positioning and supporting effect can also be achieved. Further spot welding is prevented the shape board and is risen to the support mounting panel, spot welding is prevented shape board and two side connecting plates, spot welding is prevented shape board and two side backup pads, it can increase table coupling assembling to prevent the shape board, the stability of connection between side coupling assembling and the end coupling assembling, great deformation appears when avoiding follow-up welding, weld table coupling assembling again at last, side coupling assembling, end coupling assembling and prevent the shape board, and with lubricating oil support and lubricating oil support mounting panel, the welding rises the support and rises to rise the support mounting panel and weld, obtain hoist carousel structure. The whole deformation of the crane turntable structure is controlled during welding, so that the processing quality of the crane turntable structure can be ensured, and the rejection rate is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings used in the description of the embodiments will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive efforts,
FIG. 1 is an elevation view of a crane carousel structure provided by embodiments of the present disclosure;
FIG. 2 is a side view of a crane carousel structure provided by embodiments of the present disclosure;
FIG. 3 is a top view of a turntable structure of a crane provided by embodiments of the present disclosure;
FIG. 4 is a flow chart of a method for manufacturing a turntable structure of a crane according to an embodiment of the present disclosure;
FIG. 5 is a flow chart of another method for processing a turntable structure of a crane provided in the embodiments of the present disclosure;
fig. 6 to 14 are schematic views of a machining process of a turntable structure of a crane provided in an embodiment of the present disclosure.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
For convenience of understanding, the structure of the turntable structure of the crane provided by the embodiment of the present disclosure is described herein, and fig. 1 is a front view of the turntable structure of the crane provided by the embodiment of the present disclosure, and as can be seen from reference to fig. 1, the turntable structure of the crane includes a surface connecting assembly 1, a side connecting assembly 2, a bottom connecting assembly 3, a deformation preventing plate 4, an oil lubricating support 5 and a lifting support 6. The watch connection assembly 1 comprises an oil-lubricating support mounting plate 11, a lifting support mounting plate 12 and two connection support plates 13, wherein each connection support plate 13 is provided with a side positioning hole 13 a. The side connection assembly 2 includes two side connection plates 21 and two arm frame hinge ear plates 22 connected with the two side connection plates 21 in a one-to-one correspondence. The bottom connection assembly 3 includes a support base plate 31 and two side support plates 32 connected to the support base plate 31 at intervals.
The side connection assembly 2 is located between the surface connection assembly 1 and the bottom connection assembly 3, the two connection support plates 13 are connected with the two side connection plates 21 in a one-to-one correspondence manner, each side connection plate 21 is partially located in a side location hole 13a in each connection support plate 13, the two side connection plates 21 are connected with the support base plate 31, the two side connection plates 21 are connected with the two side support plates 32 in a one-to-one correspondence manner, and the two arm support hinge lug plates 22 are connected with the support base plate 31.
Fig. 2 is a side view of a crane turntable structure provided in an embodiment of the present disclosure, and fig. 3 is a top view of the crane turntable structure provided in an embodiment of the present disclosure, and as can be seen from fig. 2 and 3, an oil-wetting support mounting plate 11 is connected to one end of a lifting support mounting plate 12, two connecting support plates 13 are respectively connected to two sides of the lifting support mounting plate 12, and one connecting support plate 13 of the two connecting support plates 13 is further connected to the oil-wetting support mounting plate 11. The deformation preventing plate 4 is connected to the two side connecting plates 21 and the two side supporting plates 32 at the same time.
As can be seen by referring to fig. 2 and 3, each side connecting plate 21 includes a connecting portion 211 and a hinge ear plate portion 212, the hinge ear plate portion 212 is connected to the connecting portion 211, and the hinge ear plate portion 212 is located in the side positioning hole 13 a. The side connecting plate 21 can play a role in positioning and supporting and can also strengthen the overall connecting strength due to the structure.
Referring to fig. 2 and 3, the lubricating oil support 5 is connected to the lubricating oil support mounting plate 11, and the lifting support 6 is connected to the lifting support mounting plate 12.
Fig. 4 is a flowchart of a method for processing a turntable structure of a crane according to an embodiment of the present disclosure, and referring to fig. 4, the method for processing the turntable structure of the crane may include:
s101: the utility model provides a table coupling assembling, side coupling assembling, end coupling assembling, prevent the board that warp, moist oil support and play to rise the support, table coupling assembling includes moist oil support mounting panel, plays to rise support mounting panel and two joint support boards, all has the side locating hole in every joint support board, side coupling assembling includes two side connecting plates and two cantilever crane hinge otic placodes, end coupling assembling includes supporting baseplate and two side backup pads.
S102: the lubricating oil support mounting plate is connected with one end of the lifting support mounting plate, the two connecting support plates are respectively connected with two sides of the lifting support mounting plate, and one of the two connecting support plates is further connected with the lubricating oil support mounting plate.
S103: and the two side connecting plates are correspondingly connected with the two arm support hinged lug plates one to one.
S104: and the bottom connecting assembly is welded, and the two side supporting plates are connected to the supporting bottom plate at intervals.
S105: spot welding table coupling assembling and side coupling assembling, spot welding side coupling assembling and end coupling assembling, side coupling assembling is located between table coupling assembling and the end coupling assembling, two joint support boards are connected with two side connection board one-to-one, every side connection board equal part is located the side locating hole on every joint support board, two side connection boards are connected with the supporting baseplate, and two side connection boards are connected with two side connection board one-to-one, two cantilever crane hinge otic placodes are connected with the supporting baseplate.
S106: the spot welding deformation preventing plate and the two side connecting plates, and the spot welding deformation preventing plate and the two side supporting plates.
S107: weld table coupling assembling, side coupling assembling, end coupling assembling and prevent the board that warp.
S108: and welding the lubricating oil support and the lubricating oil support mounting plate, and welding the lifting support and the lifting support mounting plate.
When the crane turntable structure is machined, the crane turntable structure is divided into a surface connecting assembly, a side connecting assembly, a bottom connecting assembly, an anti-deformation plate, an oil lubricating support and a lifting support. Firstly, welding a lubricating support mounting plate and a lifting support mounting plate in a surface connecting assembly with two connecting support plates, then welding two side connecting plates and two arm support hinged lug plates in a side connecting assembly, and finally welding a support bottom plate and two side support plates in a bottom connecting assembly. The assemblies with smaller deformation are firstly grouped for independent welding, so that larger deformation can be avoided subsequently. And then spot welding the surface connecting component and the side connecting component in sequence, spot welding the side connecting component and the bottom connecting component, and preliminarily positioning the surface connecting component, the side connecting component and the bottom connecting component, wherein each side connecting plate in the side connecting component is partially positioned in a side positioning hole in each connecting supporting plate in the surface connecting component, and the positioning and supporting effect can also be achieved. Further spot welding is prevented the shape board and is risen to the support mounting panel, spot welding is prevented shape board and two side connecting plates, spot welding is prevented shape board and two side backup pads, it can increase table coupling assembling to prevent the shape board, the stability of connection between side coupling assembling and the end coupling assembling, great deformation appears when avoiding follow-up welding, weld table coupling assembling again at last, side coupling assembling, end coupling assembling and prevent the shape board, and with lubricating oil support and lubricating oil support mounting panel, the welding rises the support and rises to rise the support mounting panel and weld, obtain hoist carousel structure. The whole deformation of the crane turntable structure is controlled during welding, so that the processing quality of the crane turntable structure can be ensured, and the rejection rate is reduced.
In addition, in the traditional processing method, if the turntable structure of the crane cannot be used due to a large error, the whole turntable structure of the crane needs to be scrapped, and materials are easily wasted. In the method, the crane turntable structure is divided into a surface connecting component, a side connecting component, a bottom connecting component, an anti-deformation plate, an oil lubricating support and a lifting support, so that even if errors are found in processing of a part of components in the welding process, the quality of the finally obtained crane turntable structure can be ensured in time, and the waste of materials can be reduced.
Fig. 5 is a flowchart of another processing method of the turntable structure of the crane according to the embodiment of the present disclosure, and as can be seen from fig. 5, the processing method of the turntable structure of the crane may include:
s201: the utility model provides a table coupling assembling, side coupling assembling, end coupling assembling, prevent the board that warp, moist oil support and play to rise the support, table coupling assembling includes moist oil support mounting panel, plays to rise support mounting panel and two joint support boards, all has the side locating hole in every joint support board, side coupling assembling includes two side connecting plates and two cantilever crane hinge otic placodes, end coupling assembling includes supporting baseplate and two side backup pads.
For example, in step S201, the lubricating oil support mounting plate, the lifting support mounting plate, the two connecting support plates, the two side connecting plates, the two arm support hinge lug plates, the support base plate, the two side support plates, the lubricating oil support and the lifting support may all be made of steel plates. The overall quality of the finally obtained turntable structure of the crane can be ensured.
Optionally, the size error of the lubricating support mounting plate, the lifting support mounting plate, the two connecting support plates, the two side connecting plates, the two arm support hinged ear plates, the supporting base plate and the two side supporting plates is within 2 mm. And the machining quality of the finally machined turntable structure of the crane is ensured.
S202: the lubricating oil support mounting plate is connected with one end of the lifting support mounting plate, the two connecting support plates are respectively connected with two sides of the lifting support mounting plate, and one of the two connecting support plates is further connected with the lubricating oil support mounting plate.
Optionally, step S202 may include spot-welding the lifting support mounting plate and the two connection support plates, and spot-welding the lubricating support mounting plate and one of the two connection support plates; welding plays to rise support mounting panel and two joint support boards, welding lubricant support mounting panel and one joint support board in two joint support boards.
The surface connecting assembly is fixed by spot welding and then welded, welding deformation is relatively small, and machining quality can be guaranteed. And during welding, the lifting support mounting plate and the two connecting support plates are welded firstly, the two connecting support plates arranged on the two sides of the lifting support mounting plate can mutually offset partial welding deformation, after a welding seam between the lifting support mounting plate and the two connecting support plates forms a support, the lubricating support mounting plate which is easy to deform is welded finally, and the integral processing quality of the meter connecting assembly is better.
For example, an arc striking plate and an arc extinguishing plate can be added at two ends of a groove between the lifting support mounting plate and the two connecting support plates and between the lubricating support mounting plate and one of the two connecting support plates.
The arc striking plate and the arc extinguishing plate at the two ends of the groove can play a role in entering a welding tool and leading out the welding tool, and the possibility of welding cracks is reduced.
The structure of the welded meter connecting assembly can be seen in fig. 6, and in fig. 6, the lubricating support mounting plate 11, the lifting support mounting plate 12 and the two connecting support plates 13 of the meter connecting assembly 1 are welded.
S203: and the two side connecting plates are correspondingly connected with the two arm support hinged lug plates one to one.
Optionally, when the side connection assembly is welded, the two side connection plates and the two arm support hinge lug plates may be welded in a one-to-one correspondence manner after the two side connection plates and the two arm support hinge lug plates are spot-welded in a one-to-one correspondence manner. The quality of the side connection assembly is better.
The structure of a side connecting plate welded with a boom hinge lug can be seen in fig. 7, a side connecting plate 21 is correspondingly connected with a boom hinge lug 22, and the side connecting plate 21 includes a connecting portion 211 and a hinge lug portion 212.
S204: and the bottom connecting assembly is welded, and the two side supporting plates are connected to the supporting bottom plate at intervals.
Optionally, when the bottom connection assembly is welded, the two side support plates and the support base plate may be welded after the two side support plates and the support base plate are spot-welded. The bottom connection assembly has better quality.
The welded structure of the bottom connection assembly can be seen in fig. 8, in which two side support plates 31 are connected to a support base plate 32 at intervals in fig. 8.
S205: a welding platform is provided.
The welding platform can be used as the welding platform of the surface connecting assembly, the side connecting assembly and the bottom connecting assembly, and the stable welding of the turntable structure of the crane is guaranteed.
The structure of the welding platform can be seen in fig. 9, the welding platform 7 includes a rectangular support frame 71 and a support rod 72, and two ends of the support rod 72 are respectively connected to the middle points of two sides of the rectangular support frame 71.
The welding platform is convenient to manufacture, the supporting strength is sufficient, and the welding platform 7 is provided with enough welding space to ensure welding operation.
The rectangular support frame 71 and the support bar 72 can be made of angle steel. Easy to obtain and manufacture.
The rectangular support frame 71 and the structure for placing the welding platform 7 can be fixedly connected through a channel steel 73, and the support rod 72 and the structure for placing the welding platform 7 can also be fixedly connected through the channel steel 73. The support stability of the welding platform 7 is enhanced.
S206: two opposite arc-shaped plates are spot-welded on the plate surface of the lifting support mounting plate, and two ends of each arc-shaped plate are respectively spot-welded on the two connecting supporting plates.
Two relative arc-shaped plates are spot-welded on the plate surface of the lifting support mounting plate, the two ends of each arc-shaped plate are respectively spot-welded on the two connecting supporting plates, the two arc-shaped plates can play a better anti-deformation effect, and the subsequent welding deformation is reduced.
Optionally, before the arc-shaped plate is spot-welded, a spot-welding line of the arc-shaped plate may be drawn on the plate surface of the lifting support mounting plate and the plate surfaces of the two connecting support plates. The position of the subsequent spot welding is more accurate.
The structure of the arc plates after spot welding can be seen in fig. 10, two arc plates 14 are arranged oppositely, and the protrusion of the arc plate 14 close to the lubricating oil support mounting plate 11 faces the lubricating oil support mounting plate 11. The deformation preventing effect of the arc-shaped plate 14 is better.
S207: spot welding table coupling assembling and side coupling assembling, spot welding side coupling assembling and end coupling assembling, side coupling assembling is located between table coupling assembling and the end coupling assembling, two joint support boards are connected with two side connection board one-to-one, every side connection board equal part is located the side locating hole on every joint support board, two side connection boards are connected with the supporting baseplate, and two side connection boards are connected with two side connection board one-to-one, two cantilever crane hinge otic placodes are connected with the supporting baseplate.
Optionally, in step S207, spot welding the meter connecting assembly and the side connecting assembly may include:
inserting one side connecting plate into a side positioning hole in one connecting support plate, and inserting the other side connecting plate into a side positioning hole in the other connecting support plate; adjusting the positions of the two side connecting plates; and spot welding the two connecting support plates and the two side connecting plates.
Insert the side locating hole with the side connecting plate, can tentatively fix a position, the position of readjustment two side connecting plates and carry out spot welding to two joint support boards and two side connecting plates. The side connection board is convenient to locate and connect quickly, and the welding efficiency can be improved.
Alternatively, the adjusting the positions of the two side connection plates in step S207 may include:
and adjusting the two side connecting plates by using the plumb line to match with the measuring scale until the distance between the two side connecting plates is kept consistent in the length direction of the lifting support mounting plate.
The plumb line cooperates the dipperstick to be convenient for the adjustment of position.
It should be noted that the plumb line provides a measuring reference, the measuring scale measures the distance between the two side connecting plates in the direction perpendicular to the plumb line, and the positions of the two side connecting plates are adjusted when the distance between the two side connecting plates is inconsistent in the length direction of the lifting support mounting plate.
Alternatively, in step S207, one gusset plate may be spot-welded on both sides of each side connecting plate before spot-welding the two connecting support plates and the two side connecting plates.
The triangular support plate which is spot-welded on both sides of each side connecting plate can play a role in supporting deformation prevention, and the welding effect is guaranteed.
It should be noted that each triangular support plate has a side edge fixed to the surface of the side connecting plate, and each triangular support plate also has another side edge fixed to the surface of the side support plate. The supporting effect is ensured.
As a specific structure, see FIG. 11, the plumb line 8 is disposed between two side link plates 21, and triangular support plates 23 are spot-welded to both sides of each side link plate 21.
For example, in step S207, when the side connection member and the bottom connection member are spot-welded, a positioning line may be drawn on the bottom connection member, and then the side connection member may be spot-welded to the bottom connection member. The welding position is ensured to be accurate.
The structure after step S207 is completed can be seen in fig. 12, where the table connecting element 1, the side connecting elements 2 and the bottom connecting element 3 are spot-welded.
S208: the spot welding deformation preventing plate and the two side connecting plates, and the spot welding deformation preventing plate and the two side supporting plates.
Optionally, step S208 may include:
the anti-deformation plate is divided into a middle anti-deformation part and two bottom anti-deformation parts, and each bottom anti-deformation part is provided with a bottom support groove;
sleeving a bottom support groove of one bottom anti-deformation part on one side support plate and performing spot welding, sleeving a bottom support groove of the other bottom anti-deformation part on the other side support plate and performing spot welding, and finally performing spot welding on the two bottom anti-deformation parts;
spot welding two ends of the middle anti-deformation part with the two side connecting plates respectively;
the middle deformation preventing portion and the two bottom deformation preventing portions are spot-welded.
The anti-deformation plate is divided into an anti-deformation part at the middle part and two anti-deformation parts at the bottoms, and is provided with a bottom support groove for supporting, so that the anti-deformation plate is fixed by spot welding, the connection and support effect of the anti-deformation plate is enhanced, and the subsequent welding deformation of the surface connecting assembly, the side connecting assembly and the bottom connecting assembly is reduced.
The structure after the step S208 is performed can be seen in fig. 13, and the deformation preventing plate 4 is divided into at least a middle deformation preventing portion 41 and two bottom deformation preventing portions 42.
Referring to fig. 13, each bottom deformation preventing portion 42 may be further divided into two portions, and the middle deformation preventing portion 41 may be divided into 4 portions, and the spot welding directions of the inside of the space surrounded by the two side connection plates 21 spot-welded to the lifting support mounting plate 12, the two side connection plates 21 and the two side support plates 32, and the inside of the space surrounded by the two side support plates 32 spot-welded to the lifting support mounting plate 12, the two side connection plates 21 and the two side support plates 32 are maintained at the spot welding. And the welding quality is ensured.
In other implementations provided by the present disclosure, the deformation preventing plate may also be divided into several middle deformation preventing portions and several bottom deformation preventing portions, which the present disclosure does not limit.
S209: weld table coupling assembling, side coupling assembling, end coupling assembling and prevent the board that warp.
Optionally, step S209 may include:
welding the two side connecting plates and the two connecting supporting plates; welding the two side connecting plates and the two side supporting plates; welding the deformation-preventing plate and the two side supporting plates; and welding the deformation preventing plate and the two side connecting plates.
The welding deformation generated by the welding sequence is relatively small, and the welding quality can be ensured.
For example, before the oil lubrication support and the oil lubrication support mounting plate are welded, a plurality of rib plates can be welded between the arm support hinge lug plate and the support base plate. The supporting and deformation preventing effects can be enhanced.
Optionally, before the lubricating oil support and the lubricating oil support mounting plate are welded, wrapping plates can be welded on the hinged lug plate part of the side connecting plate and the arm support hinged lug plate, and flanges are fixed in lug holes of the hinged lug plate part of the side connecting plate and lug holes of the arm support hinged lug plate. Can play a certain role in supporting and preventing deformation.
S210: and welding the lubricating oil support and the lubricating oil support mounting plate, and welding the lifting support and the lifting support mounting plate.
Optionally, in step S210, after the lubricating oil support mounting plate and the lifting support mounting plate are lined, the lubricating oil support and the lifting support may be welded. The welding quality is better.
The structure of the lubricating oil support can be seen in fig. 14, and the lubricating oil support 5 is in a gourd shape. The connection supporting effect is good.
The lubricating oil support can be welded and processed. Is easy to process and manufacture.
The structure of the lubricating support and the structure of the lifting support are the same, and the details are not repeated.
It should be noted that, the processing method in fig. 5 adds step S205 and step S206 to the processing method in fig. 4, so that the welding deformation of the turntable structure of the crane can be further reduced.
Although the present invention has been described with reference to the above embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (9)
1. The machining method of the crane turntable structure is characterized by comprising the following steps of:
the method comprises the following steps of providing a surface connecting assembly, a side connecting assembly, a bottom connecting assembly, an anti-deformation plate, an oil lubricating support and a lifting support, wherein the surface connecting assembly comprises an oil lubricating support mounting plate, a lifting support mounting plate and two connecting support plates, each connecting support plate is provided with a side positioning hole, the side connecting assembly comprises two side connecting plates and two arm support hinged lug plates, and the bottom connecting assembly comprises a supporting bottom plate and two side supporting plates;
welding the meter connecting assembly, connecting the lubricating support mounting plate with one end of the lifting support mounting plate, respectively connecting the two connecting support plates with two sides of the lifting support mounting plate, and connecting one of the two connecting support plates with the lubricating support mounting plate;
welding the side connecting components, wherein the two side connecting plates are correspondingly connected with the two arm support hinged lug plates one by one;
the bottom connecting assembly is welded, and the two side supporting plates are connected to the supporting bottom plate at intervals;
spot-welding the surface connecting assembly and the side connecting assembly, spot-welding the side connecting assembly and the bottom connecting assembly, wherein the side connecting assembly is positioned between the surface connecting assembly and the bottom connecting assembly, the two connecting support plates are connected with the two side connecting plates in a one-to-one correspondence manner, each side connecting plate is partially positioned in a side positioning hole on each connecting support plate, the two side connecting plates are connected with the supporting base plate, the two side connecting plates are connected with the two side support plates in a one-to-one correspondence manner, and the two arm support hinged lug plates are connected with the supporting base plate;
spot welding the deformation preventing plate and the two side connecting plates, and spot welding the deformation preventing plate and the two side supporting plates;
welding the surface connecting assembly, the side connecting assembly, the bottom connecting assembly and the anti-deformation plate;
welding the lubricating oil support and the lubricating oil support mounting plate, and welding the lifting support and the lifting support mounting plate;
the welding table coupling assembling, side coupling assembling end coupling assembling with prevent the board that warp, include:
welding the two side connecting plates and the two connecting supporting plates;
welding the two side connecting plates and the two side supporting plates;
welding the deformation-preventing plate and the two side supporting plates;
and welding the deformation preventing plate and the two side connecting plates.
2. The method of claim 1, wherein spot welding the surface connection assembly and the side connection assembly comprises:
inserting one of the side connection plates into a side positioning hole in one of the connection support plates and inserting the other of the side connection plates into a side positioning hole in the other of the connection support plates;
adjusting the positions of the two side connecting plates;
and spot welding the two connecting support plates and the two side connecting plates.
3. The method for processing the turntable structure of the crane as claimed in claim 2, wherein the adjusting the positions of the two side connection plates comprises:
and adjusting two side connecting plates by using a plumb line to match with a measuring ruler until the distance between the two side connecting plates is kept consistent in the length direction of the lifting support mounting plate.
4. The method for processing the turntable structure of the crane as claimed in claim 3, wherein one triangular support plate is spot-welded to both sides of each of the side connection plates before the two connection support plates and the two side connection plates are spot-welded.
5. The method for processing the turntable structure of the crane according to any one of claims 1 to 4, wherein the spot-welding the deformation prevention plate and the two side connection plates and the spot-welding the deformation prevention plate and the two side support plates comprises:
dividing the anti-deformation plate into a middle anti-deformation part and two bottom anti-deformation parts, wherein each bottom anti-deformation part is provided with a bottom support groove;
sleeving a bottom support groove of one bottom anti-deformation part on one side supporting plate and performing spot welding, sleeving a bottom support groove of the other bottom anti-deformation part on the other side supporting plate and performing spot welding, and finally performing spot welding on the two bottom anti-deformation parts;
spot welding two ends of the middle anti-deformation part with the two side connecting plates respectively;
spot-welding the middle deformation preventing portion and the two bottom deformation preventing portions.
6. The machining method of the turntable structure of the crane according to any one of claims 1 to 4, wherein the spot welding of the surface connecting assembly and the side connecting assembly comprises:
providing a welding platform, and spot-welding the surface connecting component and the side connecting component on the welding platform.
7. The machining method of the turntable structure of the crane as claimed in claim 6, wherein the welding platform comprises a rectangular support frame and a support rod, and two ends of the support rod are respectively connected to the middle points of two sides of the rectangular support frame.
8. The machining method of the turntable structure of the crane according to any one of claims 1 to 4, wherein before spot welding the surface connecting assembly and the side connecting assembly,
two opposite arc-shaped plates are spot-welded on the surface of the lifting support mounting plate, and each two ends of each arc-shaped plate are respectively spot-welded on the two connecting supporting plates.
9. The machining method of the turntable structure of the crane according to any one of claims 1 to 4, wherein a plurality of rib plates are welded between the arm support hinge lug plate and the support base plate before the lubricating oil support and the lubricating oil support mounting plate are welded.
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