CN114074240B - Auxiliary control device for overall flatness of lifting lug of electrical cabinet and control method thereof - Google Patents
Auxiliary control device for overall flatness of lifting lug of electrical cabinet and control method thereof Download PDFInfo
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- CN114074240B CN114074240B CN202010820837.6A CN202010820837A CN114074240B CN 114074240 B CN114074240 B CN 114074240B CN 202010820837 A CN202010820837 A CN 202010820837A CN 114074240 B CN114074240 B CN 114074240B
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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
- B23K37/0435—Clamps
- B23K37/0443—Jigs
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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
Abstract
The invention discloses an auxiliary control device for the integral flatness of a lifting lug of an electric cabinet, which comprises a rigid constraint component, a rigid support component, a lifting lug assembling component and a deformation component, wherein the rigid constraint component is arranged on the rigid support component; the rigid constraint assembly is arranged at the four corners of the electrical cabinet and used for fixing the electrical cabinet on the welding platform; the rigid support assemblies are arranged between each bottom longitudinal beam and each top longitudinal beam, and between each top cross beam and each longitudinal and transverse beam; the deformation assembly is arranged between the electrical cabinet and the welding platform and is used for enabling each top longitudinal beam of the electrical cabinet to be arched; the lifting lug assembling assembly is arranged at the top of the electrical cabinet and used for limiting the position of the lifting lug. The lifting lug flatness control device has the advantages of simple structure, simplicity and convenience in operation, accuracy in lifting lug flatness control and the like.
Description
Technical Field
The invention relates to the technical field of electrical cabinets, in particular to an auxiliary control device for the overall flatness of an electrical cabinet lifting lug and a control method thereof.
Background
The electric cabinet is similar to nerves and blood vessels of a high-speed train, mainly plays a role in realizing functions of complex logic control, power distribution control, protection and the like of a system, and is a core component of equipment under the train. The 18 lifting lugs welded on the top beam of the electrical cabinet realize the suspension connection of the electrical cabinet and the vehicle body carrier beam, and are influenced by the complex service environment of the high-speed train, and the requirement of the vehicle body carrier beam on the integral flatness of the lifting lugs of the electrical cabinet is very high. The electrical cabinet is formed by integrally welding thousands of structural parts, the cumulant heat input is large, in addition, the lifting lugs and the top beam are made of carbon steel and stainless steel respectively, dissimilar metals with large difference of thermal expansion coefficients of the two materials are welded, the welding stress distribution is complex, the deformation is large, and the integral uneven leveling strength of the lifting lugs is increased. Under the action of complex road spectrum load, the stress concentration position of the lifting lug is easy to cause structural failure, and a plurality of uncertain factors are brought to the safe operation of the high-speed train.
The metal material has the characteristics of thermal expansion during welding and plastic contraction after cooling. To the complicated various welding seam distribution condition of regulator cubicle, the irregularity of welding shrink makes the regulator cubicle before the lug welding take place irregular deformation, causes to form the difference in height outside the error band between lug and the lug, influences the whole plane degree after the lug welding cooling.
In the prior art, after all lifting lugs are welded with a top beam of an electrical cabinet, the top beam is easy to generate wave deformation and downward deflection deformation, so that the integral flatness of the lifting lugs is uneven; in addition, after the welding of the lifting lugs, the anti-deformation amount is not completely counteracted, secondary heat input around the welding seams of the lifting lugs is increased, the quality of the welding seams of the lifting lugs is reduced, the structural failure of the lifting lugs is accelerated, and a plurality of uncertain factors are brought to the safe operation of a high-speed train.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the technical problems in the prior art, the invention provides the auxiliary control device for the integral flatness of the lifting lug of the electric cabinet and the control method thereof, wherein the auxiliary control device is simple in structure, simple and convenient to operate and accurate in control of the flatness of the lifting lug.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
an auxiliary control device for the integral flatness of a lifting lug of an electric cabinet comprises a rigid constraint component, a rigid support component, a lifting lug assembling component and a deformation component;
the rigid constraint assembly is arranged at the four corners of the electrical cabinet and used for fixing the electrical cabinet on the welding platform;
the rigid support assemblies are arranged between each bottom longitudinal beam and each top longitudinal beam, and between each top cross beam and each bottom cross beam;
the deformation assembly is arranged between the electrical cabinet and the welding platform and is used for enabling each top longitudinal beam of the electrical cabinet to be arched;
the lifting lug assembling assembly is arranged at the top of the electrical cabinet and used for limiting the position of the lifting lug.
As a further improvement of the technical scheme:
the rigid constraint assembly comprises an I-shaped constraint tool and a Y-shaped constraint tool; the I-shaped constraint tool is arranged at the front end part of the left bottom longitudinal beam and the rear end part of the right bottom longitudinal beam and is used for providing normal downward constraint force for the front end part of the left bottom longitudinal beam and the rear end part of the right bottom longitudinal beam; the Y-shaped constraint tool is installed at the right end part of the front bottom cross beam and the front end part of the right bottom longitudinal beam, the left end part of the rear bottom cross beam and the rear end part of the left bottom longitudinal beam and used for providing normal downward constraint force for the right end part of the front bottom cross beam and the front end part of the right bottom longitudinal beam and the normal downward constraint force for the left end part of the rear bottom cross beam and the rear end part of the left bottom longitudinal beam.
The rigid support assembly comprises a first rigid support tool, a second rigid support tool, a third rigid support tool and a fourth rigid support tool; the first rigid supporting tool is arranged between the left bottom longitudinal beam and the left top longitudinal beam and used for providing a supporting force for the left top longitudinal beam in the normal upward direction; the second rigid supporting tool is arranged between the right bottom longitudinal beam and the right top longitudinal beam and is used for providing a supporting force for the right top longitudinal beam in the normal upward direction; and the third rigid supporting tool and the fourth rigid supporting tool are arranged between the front top cross beam and the front bottom cross beam and used for providing a supporting force for the front top cross beam in the normal upward direction.
The first rigid support tool, the second rigid support tool, the third rigid support tool and the fourth rigid support tool are all telescopic support rods.
The lifting lug assembling assembly comprises a lifting lug limiting structure and a rigid beam frame structure, the rigid beam frame structure is matched with the top of the electrical cabinet, and the lifting lug limiting structure is located on the periphery of the rigid beam frame structure and used for limiting the position of a lifting lug to be welded.
The deformation assembly comprises a solid semicircular rod, the plane of the solid semicircular rod is in contact with the welding platform, and the cambered surface of the solid semicircular rod is in contact with the electric cabinet.
The invention also discloses a flatness control method based on the auxiliary control device for the integral flatness of the lifting lug of the electric cabinet, which comprises the following steps:
1) After all cross beams and longitudinal beams of the bare cabinet of the electrical cabinet are assembled and welded and before all small parts are assembled and welded, deformation components are respectively arranged at preset positions away from the end part of the front bottom cross beam and acting on the left bottom longitudinal beam and the right bottom longitudinal beam, and the four corners of the bare cabinet are pressed and attached to a welding platform by using the rigid constraint components, so that the left top longitudinal beam and the right top longitudinal beam are arched;
2) Rigid support components are arranged between the bottom longitudinal beam and the top longitudinal beam as well as between the top cross beam and the bottom cross beam, and normal upward support force is applied to the left top longitudinal beam, the right top longitudinal beam and the front top cross beam;
3) After the naked cabinet is welded, cooling to room temperature, removing the rigid constraint component and the deformation component, and performing first mechanical shape correction on lifting lug mounting surfaces of the left top longitudinal beam, the right top longitudinal beam, the front top cross beam and the rear top cross beam;
4) After the first mechanical reshaping is finished, deformation components are arranged at preset positions away from the end part of the front bottom cross beam and act on the left bottom longitudinal beam and the right bottom longitudinal beam respectively, and the four corners of the bare cabinet are pressed and attached to the welding platform by using the rigid constraint components, so that the left top longitudinal beam and the right top longitudinal beam are arched;
5) Fixing the lifting lug assembling component on the top of the electrical cabinet, completing lifting lug positioning through the lifting lug assembling component, and then performing primary welding on the lifting lug;
6) After the cabinet body is cooled to room temperature, the rigid constraint component and the deformation component are removed;
7) And (3) completely welding the lifting lugs, removing the rigid supporting component after the electric cabinet is cooled to room temperature, measuring the integral flatness of all the lifting lugs, and finishing the mechanical shape correction for the second time.
As a further improvement of the above technical solution:
and before the lifting lug welding is carried out in the step 5), carrying out differential presetting on all welding reversible deformation quantities of the lifting lugs at all positions so as to offset the deformation collapse quantity after welding.
In the step 5), the primary welding comprises the step of welding three welding seams on the upper surface of the lifting lug; in the step 7), the complete welding of the lifting lug comprises the step of welding all the rest welding seams of the lifting lug in a symmetrical welding mode.
In the step 1) and the step 4), deformation assemblies with different thicknesses are arranged so that the left top longitudinal beam and the right top longitudinal beam are arched at different preset deformation amounts.
Compared with the prior art, the invention has the advantages that:
the lifting lug is assembled and welded in front of the cabinet body, the naked cabinet is subjected to arch-shaped reversible deformation arrangement in advance through the rigid constraint component and the deformation component, rigid support components are respectively arranged on a left top longitudinal beam, a right top longitudinal beam and a front top cross beam at the rigid weak position of part of the lifting lug to apply upward supporting force to the corresponding beams, the beams at the rigid weak position are subjected to rigid supplement, and welding deformation hollow points are avoided; by combining the lifting lug deformation rule discovered based on data statistical analysis, the anti-deformation amounts of all lifting lugs of the electrical cabinet are set in a differentiation manner, so that the accurate control of the welding deformation of each lifting lug can be effectively realized; the lug assembling device is adapted to the arch-shaped structure of the naked cabinet, profile modeling is performed on the lug limiting structure, and the lug assembling precision is effectively improved.
Drawings
Fig. 1 is a schematic structural diagram of an electrical cabinet according to an embodiment of the present invention.
FIG. 2 is a schematic structural diagram of an I-shaped constraint fixture according to an embodiment of the present invention.
FIG. 3 is a schematic structural diagram of a Y-shaped constraint fixture in an embodiment of the present invention.
Fig. 4 is a schematic structural view of an embodiment of the rigid support assembly of the present invention.
Fig. 5 is a schematic structural diagram of a deformation assembly in the present invention.
Figure 6 is a schematic structural view of an embodiment of the shackle assembly of the present invention.
FIG. 7 is a flowchart illustrating a control method according to an embodiment of the present invention.
Fig. 8 is a schematic view of the primary welding of the shackle in the present invention.
Fig. 9 is a schematic view illustrating the assembly of the shackle of the present invention.
Fig. 10 is a preset schematic view of the reversible deformation amount of the shackle of the present invention.
Illustration of the drawings: 1. an electrical cabinet; 101. a left top stringer; 102. a left bottom stringer; 103. a right top stringer; 104. a right bottom stringer; 105. a front top cross beam; 106. a front bottom rail; 107. a rear top cross beam; 108. a rear bottom cross member; 2. a rigid restraint assembly; 201. i-shaped constraint tooling; 202. a Y-shaped constraint tool; 3. a rigid support assembly; 4. a lug assembly component; 401. a rigid beam frame structure; 402. a lifting lug limiting structure; 5. and (5) deforming the assembly.
Detailed Description
The invention is further described below with reference to the figures and the specific embodiments of the description.
As shown in fig. 1 to 6, the auxiliary control device for the overall flatness of the lifting lug of the electrical cabinet of the present embodiment includes a rigid constraint component 2, a rigid support component 3, a lifting lug assembling component 4 and a deformation component 5; the rigid constraint component 2 is arranged at the four corners of the electrical cabinet 1 and is used for fixing the electrical cabinet 1 on the welding platform; the rigid support assembly 3 is arranged between the bottom longitudinal beam and the top longitudinal beam as well as between the top cross beam and the bottom cross beam; the deformation assembly 5 is arranged between the electrical cabinet 1 and the welding platform and is used for enabling a top longitudinal beam of the electrical cabinet 1 to be arched; and the lifting lug assembling assembly 4 is arranged at the top of the electrical cabinet 1 and used for limiting the position of the lifting lug. According to the invention, the lifting lugs are assembled and welded in front of the cabinet body, the rigid constraint component 2 and the deformation component 5 are used for carrying out 'arch' -shaped reversible deformation arrangement on the bare cabinet in advance so as to resist the deformation collapse amount of subsequent welding, the rigid support components 3 are respectively arranged on the left top longitudinal beam 101, the right top longitudinal beam 103 and the front top cross beam 105 at the part where the rigidity of the lifting lugs is weak so as to apply upward supporting force to the corresponding beams, the beams with the rigidity being insufficient are subjected to rigid compensation, the welding deformation 'hollow' points are avoided, and the integral flatness of the lifting lugs is ensured.
In this embodiment, the rigid constraint component 2 includes an I-shaped constraint tool 201 and a Y-shaped constraint tool 202 which act on the normal directions of the end portions of the bottom longitudinal beam and the bottom cross beam respectively; the I-shaped constraint tool 201 is arranged at the front end part of the left bottom longitudinal beam 102 and the rear end part of the right bottom longitudinal beam 104 and is used for providing normal downward constraint force for the front end part of the left bottom longitudinal beam 102 and the rear end part of the right bottom longitudinal beam 104; the Y-shaped constraint tool 202 is mounted at the right end of the front bottom cross beam 106 and the front end of the right bottom longitudinal beam 104, and the left end of the rear bottom cross beam 108 and the rear end of the left bottom longitudinal beam 102, and is used for providing normal downward constraint force for the right end of the front bottom cross beam 106 and the front end of the right bottom longitudinal beam 104, and the left end of the rear bottom cross beam 108 and the rear end of the left bottom longitudinal beam 102. Specifically, as shown in fig. 2, the I-shaped constraint fixture 201 includes an I-shaped pressure plate, a height cushion block, and a bolt; one end of each of the two I-shaped pressing plates is in contact with the front end portion of the left bottom longitudinal beam 102 and the rear end portion of the right bottom longitudinal beam 104 respectively, the other end of each of the two I-shaped pressing plates is pressed on the height cushion block, a waist-shaped through hole is formed in each I-shaped pressing plate, and the bolt penetrates through the waist-shaped through hole and the welding platform to be connected with the nut, so that the electric cabinet 1 is fastened on the welding platform. As shown in fig. 3, the Y-shaped constraint fixture 202 includes a Y-shaped pressure plate, a height pad, and a bolt; the end parts of the two Y-shaped pressing plates are respectively contacted with the right end part of the front bottom cross beam 106 of the pressing plate, the front end part of the right bottom longitudinal beam 104, the left end part of the rear bottom cross beam 108 and the rear end part of the left bottom longitudinal beam 102, kidney-shaped through holes are formed in the other two plates, and bolts penetrate through the kidney-shaped through holes to be connected with nuts.
In this embodiment, the rigid support assembly 3 includes a first rigid support tool, a second rigid support tool, a third rigid support tool, and a fourth rigid support tool; the first rigid supporting tool is arranged between the left bottom longitudinal beam 102 and the left top longitudinal beam 101 and used for providing a supporting force for the left top longitudinal beam 101 in the normal upward direction; the second rigid supporting tool is arranged between the right bottom longitudinal beam 104 and the right top longitudinal beam 103 and is used for providing a supporting force for the right top longitudinal beam 103 in the normal upward direction; the third rigid supporting tool and the fourth rigid supporting tool are arranged between the front top cross beam 105 and the front bottom cross beam 106 and used for providing a supporting force for the front top cross beam 105 in a normal upward direction, and the specific installation position is shown as an upper-lower arrow in fig. 1. The first rigid support tool, the second rigid support tool, the third rigid support tool and the fourth rigid support tool are all telescopic support rods, and specifically comprise bidirectional fastening screw cylinders and adjusting rods, as shown in fig. 4.
As shown in fig. 5, in the present embodiment, the deformation component 5 includes a solid semicircular rod, a plane of the solid semicircular rod is in contact with the welding platform, and an arc surface of the solid semicircular rod is in contact with the electrical cabinet 1.
As shown in fig. 6, in the present embodiment, the lifting lug assembling assembly 4 includes a lifting lug limiting structure 402 and a rigid beam frame structure 401, and the rigid beam frame structure 401 is matched with the top of the electrical cabinet 1 and is formed by welding a plurality of cross beams and longitudinal beams; the lifting lug limiting structure 402 is located on the periphery of the rigid beam frame structure 401, and is used for limiting the position of the lifting lug to be welded. Specifically, the number of the lifting lug limiting structures 402 is 18, and the lifting lug limiting structures are welded on the longitudinal beams and the cross beams of the rigid beam frame structure 401 in the same size according to the distribution form of the lifting lugs of the electrical cabinet 1. The shape of the rigid beam frame structure 401 is matched with the shape of the top of the electrical cabinet 1, i.e. the rigid beam frame structure is also arched.
As shown in fig. 7, the invention also discloses a flatness control method based on the above-mentioned auxiliary control device for the overall flatness of the lifting lug of the electrical cabinet, which comprises the following steps:
1) After all cross beams and longitudinal beams of a bare cabinet of the electrical cabinet 1 are assembled and welded and before all small parts are assembled and welded, deformation assemblies 5 are arranged at preset positions away from the end part of a front bottom cross beam 106 and act on a left bottom longitudinal beam 102 and a right bottom longitudinal beam 104 respectively, and four corners of the bare cabinet are pressed and attached to a welding platform by a rigid constraint assembly 2, so that a left top longitudinal beam 101 and a right top longitudinal beam 103 are arched, as shown in fig. 9;
2) Rigid support components 3 are arranged between the bottom longitudinal beam and the top longitudinal beam and between the top cross beam and the bottom cross beam, and normal upward support force is applied to the left top longitudinal beam 101, the right top longitudinal beam 103 and the front top cross beam 105;
3) After the bare cabinet is welded, cooling to room temperature, removing the rigid restraint assembly 2 and the deformation assembly 5, and performing first mechanical reshaping on lifting lug installation surfaces of the left top longitudinal beam 101, the right top longitudinal beam 103, the front top cross beam 105 and the rear top cross beam 107;
4) After the first mechanical reshaping is finished, deformation components 5 are arranged at preset positions away from the end part of the front bottom cross beam 106 and acting on the left bottom longitudinal beam 102 and the right bottom longitudinal beam 104 respectively, and four corners of the naked cabinet are pressed tightly and attached to a welding platform by using the rigid constraint component 2, so that the left top longitudinal beam 101 and the right top longitudinal beam 103 are arched;
5) Fixing the lifting lug assembling component 4 on the top of the electrical cabinet 1, completing lifting lug positioning through the lifting lug assembling component 4, and then performing primary welding on the lifting lug;
6) After the cabinet body is cooled to room temperature, the rigid restraining component 2 and the deformation component 5 are disassembled;
7) And (3) completely welding the lifting lugs, removing the rigid support component 3 after the electrical cabinet 1 is cooled to room temperature, measuring the integral flatness of all the lifting lugs, and finishing the mechanical shape correction for the second time.
In this embodiment, before the welding of the lifting lugs in step 5), the welding reverse deformation amounts of the lifting lugs at all positions are all preset in a differentiated manner so as to cancel out the deformation collapse amount after welding. Specifically, the 18 lifting lugs of the electrical cabinet 1 are all subjected to differential presetting before being welded to the cabinet body, and are marked as f1, f2.
In the embodiment, in the step 5), the preliminary welding includes welding three welding seams on the upper surface of the lifting lug; in step 7), the complete welding of the lifting lug comprises the welding of all the remaining welding seams of the lifting lug in a symmetrical welding mode.
In the present embodiment, in step 1) and step 4), the deforming members 5 with different thicknesses are provided so that the left top longitudinal beam 101 and the right top longitudinal beam 103 are arched with different preset deformation amounts.
The above-described apparatus and method are further described in a complete embodiment with reference to the accompanying drawings in which:
after all the cross beams and the longitudinal beams of the bare cabinet are assembled and welded and before all the small accessories are assembled and welded, solid semicircular rods with the thickness of 4mm and the length of 120mm are respectively arranged at 1240mm and 3650mm positions (A and B) away from the end part of the front bottom cross beam 106 and acting on the left bottom longitudinal beam; solid semicircular rods with the thickness of 5mm and the length of 120mm are respectively arranged at the 1240mm position and the 3650mm position which are away from the end part of the front bottom cross beam 106 and act on the right bottom longitudinal beam 104, and four corners of the bare cabinet are tightly pressed and attached to the welding platform by utilizing an I-shaped constraint tool 201 and a Y-shaped constraint tool 202;
installing a first rigid supporting tool at a position which is 1525mm away from the end part of the rear top cross beam 107 and acts on the left top longitudinal beam 101, installing a second rigid supporting tool at a position which is 1525mm away from the end part of the rear top cross beam 107 and acts on the right top longitudinal beam 103, installing a third rigid supporting tool at a position which is 795mm away from the end part of the right top longitudinal beam 103 and acts on the front top cross beam 105, installing a fourth rigid supporting tool at a position which is 1650mm away from the end part of the right top longitudinal beam 103 and acts on the front top cross beam 105, and applying a supporting force which is in an upward normal direction to the left top longitudinal beam 101, the right top longitudinal beam 103 and the front top cross beam 105 through bidirectional fastening screw cylinders;
after the bare cabinet is welded, cooling the cabinet body to room temperature, removing the I-shaped constraint tool 201 and the Y-shaped constraint tool 202, and performing first mechanical shape correction on the mounting surfaces of lifting lugs of the left top longitudinal beam 101, the right top longitudinal beam 103, the front top cross beam 105 and the rear top cross beam 107;
after the first mechanical reshaping is finished, solid semicircular rods with the thickness of 3mm and the length of 120mm are respectively arranged at 1240mm and 3650mm positions away from the end part of the front bottom cross beam 106 and acting on the left bottom longitudinal beam; solid semicircular rods with the thickness of 4mm and the length of 120mm are respectively arranged at the positions 1240mm and 3650mm away from the end part of the front bottom cross beam 106 and acting on the right bottom longitudinal beam 104, and the four corners of the naked cabinet are pressed tightly to be attached to the welding platform through the I-shaped constraint structure and the Y-shaped constraint structure;
the lifting lug positioning is completed through the lifting lug assembling component 4, and the lifting lug limiting structure 402 restrains the moving freedom degrees of the lifting lug in three directions;
after the three welding lines on the upper surface of the lifting lug are welded, the I-shaped constraint tool 201 and the Y-shaped constraint tool 202 are removed after the cabinet body is cooled to room temperature; as shown in fig. 8, all the remaining welding seams of the lifting lug are welded in a symmetrical welding manner, and when the electrical cabinet 1 is cooled to room temperature, the first rigid support tool and the second rigid support tool are removed; and measuring the integral flatness of all lifting lugs, and finishing the second mechanical reshaping, lifting lug welding and flatness adjustment.
The lifting lug is assembled and welded in front of the cabinet body, the rigid constraint component 2 and the deformation component 5 are used for carrying out 'arch' -shaped reversible deformation setting on the naked cabinet in advance, the rigid support components 3 are respectively arranged on the left top longitudinal beam 101, the right top longitudinal beam 103 and the front top cross beam 105 at the rigid weak positions of partial lifting lugs to apply upward supporting force to the corresponding beams, the beams at the positions with insufficient rigidity are subjected to rigid compensation, and welding deformation 'hollow' points are avoided; by combining the lifting lug deformation rule discovered based on data statistical analysis, the anti-deformation amounts of all lifting lugs of the electrical cabinet 1 are set in a differentiation manner, so that the accurate control of the welding deformation of each lifting lug can be effectively realized; the lug joins in marriage the device and for adapting to naked cabinet "arch" form structure, has carried out the high setting of profile modeling to lug limit structure 402, effectively improves the lug and joins in marriage the dress precision.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.
Claims (10)
1. An auxiliary control device for the integral flatness of an electric cabinet lifting lug is characterized by comprising a rigid constraint component (2), a rigid support component (3), a lifting lug assembling component (4) and a deformation component (5);
the rigid constraint component (2) is arranged at the four corners of the electrical cabinet (1) and is used for fixing the electrical cabinet (1) on the welding platform;
the rigid support assemblies (3) are arranged between each bottom longitudinal beam and each top longitudinal beam of the electrical cabinet (1) and between each top cross beam and each bottom cross beam;
the deformation assembly (5) is arranged between the electrical cabinet (1) and the welding platform and is used for enabling each top longitudinal beam of the electrical cabinet (1) to be arched;
the lifting lug assembling assembly (4) is installed at the top of the electrical cabinet (1) and used for limiting the position of a lifting lug.
2. The auxiliary control device for the overall flatness of the lifting lug of the electric cabinet according to claim 1, wherein the rigid constraint assembly (2) comprises an I-shaped constraint tool (201) and a Y-shaped constraint tool (202); the I-shaped constraint tool (201) is arranged at the front end part of the left bottom longitudinal beam (102) and the rear end part of the right bottom longitudinal beam (104) and is used for providing normal downward constraint force for the front end part of the left bottom longitudinal beam (102) and the rear end part of the right bottom longitudinal beam (104); the Y-shaped constraint tool (202) is installed at the right end of the front bottom cross beam (106) and the front end of the right bottom longitudinal beam (104), the left end of the rear bottom cross beam (108) and the rear end of the left bottom longitudinal beam (102) and used for providing normal downward constraint force for the right end of the front bottom cross beam (106) and the front end of the right bottom longitudinal beam (104), and the left end of the rear bottom cross beam (108) and the rear end of the left bottom longitudinal beam (102).
3. The auxiliary control device for the overall flatness of the lifting lug of the electric cabinet according to claim 1, wherein the rigid support assembly (3) comprises a first rigid support tool, a second rigid support tool, a third rigid support tool and a fourth rigid support tool; the first rigid supporting tool is arranged between the left bottom longitudinal beam (102) and the left top longitudinal beam (101) and is used for providing a supporting force for the left top longitudinal beam (101) in the normal direction; the second rigid supporting tool is arranged between the right bottom longitudinal beam (104) and the right top longitudinal beam (103) and is used for providing a supporting force for the right top longitudinal beam (103) in the normal direction; and the third rigid supporting tool and the fourth rigid supporting tool are arranged between the front top cross beam (105) and the front bottom cross beam (106) and are used for providing a supporting force for the front top cross beam (105) in the normal direction and the upward direction.
4. The auxiliary control device for the overall flatness of the lifting lug of the electrical cabinet according to claim 3, wherein the first rigid support tool, the second rigid support tool, the third rigid support tool and the fourth rigid support tool are all telescopic support rods.
5. The auxiliary control device for the integral flatness of the lifting lug of the electric cabinet according to any one of claims 1 to 4, wherein the lifting lug assembling assembly (4) comprises a lifting lug limiting structure (402) and a rigid beam frame structure (401), the rigid beam frame structure (401) is matched with the top of the electric cabinet (1), and the lifting lug limiting structure (402) is located on the peripheral side of the rigid beam frame structure (401) and used for limiting the position of the lifting lug to be welded.
6. The auxiliary control device for the overall flatness of the lifting lug of the electrical cabinet according to any one of claims 1 to 4, wherein the deformation component (5) comprises a solid semicircular rod, the plane of the solid semicircular rod is in contact with the welding platform, and the cambered surface of the solid semicircular rod is in contact with the electrical cabinet (1).
7. The flatness control method of the auxiliary control device for the integral flatness of the lifting lug of the electric cabinet based on any one of claims 1 to 6 is characterized by comprising the following steps of:
1) after all cross beams and longitudinal beams of a bare cabinet of an electrical cabinet (1) are assembled and welded and before all small parts are assembled and welded, deformation assemblies (5) are arranged at preset positions away from the end part of a front bottom cross beam (106) and act on a left bottom longitudinal beam (102) and a right bottom longitudinal beam (104) respectively, and four corners of the bare cabinet are pressed and attached to a welding platform by using a rigid constraint assembly (2), so that a left top longitudinal beam (101) and a right top longitudinal beam (103) are arched;
2) Rigid support components (3) are arranged between the bottom longitudinal beam and the top longitudinal beam as well as between the top cross beam and the bottom cross beam, and normal upward support force is applied to the left top longitudinal beam (101), the right top longitudinal beam (103) and the front top cross beam (105);
3) After the bare cabinet is welded, cooling to room temperature, removing the rigid constraint component (2) and the deformation component (5), and performing first mechanical shape correction on lifting lug mounting surfaces of the left top longitudinal beam (101), the right top longitudinal beam (103), the front top cross beam (105) and the rear top cross beam (107);
4) After the first mechanical reshaping is finished, deformation components (5) are arranged at preset positions away from the end part of the front bottom cross beam (106) and acting on the left bottom longitudinal beam (102) and the right bottom longitudinal beam (104), and four corners of the naked cabinet are pressed and attached to a welding platform by using the rigid constraint components (2), so that the left top longitudinal beam (101) and the right top longitudinal beam (103) are arched;
5) Fixing the lifting lug assembling component (4) on the top of the electrical cabinet (1), completing lifting lug positioning through the lifting lug assembling component (4), and then performing primary welding on the lifting lug;
6) When the cabinet body is cooled to room temperature, the rigid restraining component (2) and the deformation component (5) are removed;
7) And (4) completely welding the lifting lugs, removing the rigid support component (3) after the electrical cabinet (1) is cooled to room temperature, measuring the integral flatness of all the lifting lugs, and finishing the mechanical shape correction for the second time.
8. The flatness control method according to claim 7, wherein before the shackle welding in step 5), the welding deformation amounts of the shackles at all positions are all differentially preset to cancel out the deformation and collapse amounts after welding.
9. The flatness control method according to claim 7 or 8, wherein in step 5), the preliminary welding includes welding three welding lines on the upper surface of the shackle; in step 7), the complete welding of the lifting lug comprises the welding of all the remaining welding seams of the lifting lug in a symmetrical welding mode.
10. The flatness control method according to claim 7 or 8, characterized in that in step 1) and step 4), deformation assemblies (5) of different thicknesses are provided to arch the left top longitudinal beam (101) and the right top longitudinal beam (103) in different preset deformation amounts.
Priority Applications (1)
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| KR101025826B1 (en) * | 2009-12-28 | 2011-03-30 | (주)도스코 | The construction method for super size electric cabinet and cabinet up-down device |
| CN204430643U (en) * | 2015-01-19 | 2015-07-01 | 扬州奥贝得电气有限公司 | Electrical cabinet framework weld jig |
| CN205222454U (en) * | 2015-12-18 | 2016-05-11 | 上海铠韧气体工程有限公司 | Row is hung in special use of liquefied natural gas ship compressor unit |
| CN106956148B (en) * | 2017-04-13 | 2019-02-12 | 广东千良智能科技有限公司 | The application method of electrical cabinet combo box clamping system |
| CN207736235U (en) * | 2017-12-22 | 2018-08-17 | 青岛万捷机械科技有限公司 | A kind of device for installing electrical cabinet reversing frame crossbeam and binding plate |
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