CN116100184B - Split welding method for split movable arm - Google Patents
Split welding method for split movable arm Download PDFInfo
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- CN116100184B CN116100184B CN202310385951.4A CN202310385951A CN116100184B CN 116100184 B CN116100184 B CN 116100184B CN 202310385951 A CN202310385951 A CN 202310385951A CN 116100184 B CN116100184 B CN 116100184B
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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
- 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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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/204—Keeping clear the surface of open water from oil spills
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- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention belongs to the technical field of welding, and relates to a split type movable arm splice welding method, which comprises the following steps: s1, preparing a middle section module, S2, preparing an arm head module, S3, preparing an arm tail module, S4, preparing a plate group, S5 and assembly welding. According to the splice welding method, the middle section module with the earholes, the arm head module and the arm tail module are welded and formed respectively, then the relative positions of the middle section module, the arm head module and the arm tail module are positioned on the jig, and the spliced front arm and rear arm are connected into a whole, so that high-precision splice welding of the split movable arm is realized, parallelism and relative positions among all the earholes are ensured, abrasion of a rotating shaft caused after the split movable arm is installed on an excavator is avoided, and the service life of the excavator is ensured; the required position precision can be directly obtained between the earholes, the step of correcting after welding is omitted, the operation is simplified, the manufacturing time is saved, and the manufacturing cost is saved; the box-shaped structure enables the middle section of the movable arm to have strong deformation resistance, the local structure is stable, and simultaneously, the splice welding is convenient, so that the welding time is saved.
Description
Technical Field
The invention relates to the technical field of welding, in particular to a split type movable arm splice welding method.
Background
The boom is a working member for connecting the arm and the frame in the excavator, and is commonly called a boom because the boom is longer than the arm. The working device of the excavator adopts a link mechanism principle, and the movement of each part is realized through the expansion and contraction of the oil cylinder.
As the size of the excavator becomes larger, the size of the movable arm also becomes larger, and the control difficulty is great due to the fact that the integral structure is adopted for manufacturing. The movable arm is provided with a plurality of lug holes for respectively hinging the bucket rod, the frame and the driving oil cylinder. The greater the boom, the greater the distance of the earholes, the more difficult it is to control the axis parallelism, relative position, and centering position. CN 109537656A discloses a method for manufacturing a boom, comprising the steps of: and the upper cover plate, the lower cover plate and the web plate of the movable arm main body are welded by using fasteners to penetrate through the mounting holes and the through holes so as to connect the upper cover plate, the lower cover plate and the web plate with the partition plate. In this method, a bulkhead is specially provided as a mounting base, and the bulkhead is positioned relatively close to the middle of the boom, and although the middle position can be well ensured, the farther from the middle is, the more easily deformation occurs when welding the profiles of the adjacent plates. Deformation comes from expansion and contraction differences caused by bending of the material in lifting or welding, which finally causes uncontrollable relative position changes of the earhole on the arm head and the earhole on the arm tail, the longer the movable arm is, the larger the error is put, the non-parallelism of the axes of the earhole is brought, the distance between the axes of the earhole is not fixed and the central plane is not uniform, and the earhole can be used after being reprocessed, thereby wasting a long time. The light weight results in abrasion of the rotating shaft, the service life of the excavator is reduced, and the heavy weight results in complete incapacitation of the movable arm.
It is therefore necessary to devise a tailor-welding method to solve the above problems.
Disclosure of Invention
The invention mainly aims to provide the split welding method for the split movable arm, which can finish the assembly of the split movable arm with high precision, ensure the parallelism and the relative position between all earholes, avoid the abrasion of a rotating shaft caused by the assembly on an excavator, ensure the service life of the excavator, avoid the step of correcting after welding, simplify the operation, save the manufacturing time and save the manufacturing cost.
The invention realizes the aim through the following technical scheme: the split welding method of the split movable arm comprises the following steps:
s1, preparing a middle section module: taking an outer bending plate, an inner bending plate, a front reinforcing plate, a rear reinforcing plate, two side plates, two lower ear plate assemblies and two upper ear plates, and welding together according to a first design structure to form a middle section module;
s2, preparing an arm head module: welding the two front ear plates, the U-shaped plate and the square plate together according to a second design structure to form an arm head module;
s3, preparing an arm tail module: welding two rear ear plates on two sides of a rear sleeve to form an arm tail module;
s4, preparing a plate group: providing a forearm board set and a rear arm board set, wherein the forearm board set comprises a forearm upper board, a forearm lower board and two forearm side boards, and the rear arm board set comprises a rear arm upper board, a rear arm lower board and two rear arm side boards;
s5, assembly welding: positioning the middle section module, the arm head module and the arm tail module on a jig by utilizing the lower ear plate assembly, the upper ear plate, the front ear plate and the ear holes of the rear sleeve; welding a forearm plate group between the arm head module and the middle section module to form a forearm; welding a rear arm plate set between the arm tail module and the middle section module to form a rear arm, so as to obtain a movable arm assembly;
the first design structure is that the outer bending plate is arranged at the upper part, the inner bending plate is arranged at the lower part, the front reinforcing plate is arranged at the front part, the rear reinforcing plate is arranged at the rear part, the outer bending plate and the two side plates positioned at the two sides are welded into a box-shaped structure, the outer surface of the inner bending plate is welded with two lower lug plate assemblies in parallel, and the outer bending plate is welded with two upper lug plates in parallel;
step S1, welding four middle section front welding strips on the inner side of the front edge of the box-shaped structure, S2, welding four arm head welding strips on the inner side of the rear edge of the arm head module, and in step S5, respectively welding the front end and the rear end of the front arm upper plate, the front arm lower plate and the front end and the rear end of the two front arm side plates with one middle section front welding strip and one arm head welding strip;
step S1 is to weld four middle section back welding strips at the back edge inboard of box structure, step S2 is to weld an arm tail welding strip respectively at the back edge inboard of two back otic placodes, step S5 the back end of back arm upper plate with back arm lower plate welds in the surface of back telescopic, back arm upper plate with the front end of back arm lower plate welds in one of them middle section back welding strip, the front and back both ends of back arm curb plate weld in one of them middle section back welding strip and one of them arm tail welding strip respectively.
Specifically, the lower otic placode subassembly is formed by lower otic placode and lower sleeve welding.
Specifically, the two front ear plates and the two rear end surfaces of the U-shaped plate are staggered front and back.
Further, the front end surfaces of the outer bending plate and the inner bending plate are staggered with the front end surfaces of the two side plates.
Further, the rear end surfaces of the outer bending plate and the inner bending plate are staggered with the rear end surfaces of the two side plates.
Specifically, the second design structure is that two preceding otic placodes symmetry weld in U-shaped board both sides, the square board weld in the opening of U-shaped board.
Specifically, step S5 is followed by step S6, spot welding of the parts: and a plurality of wire seats, a plurality of oil pipe fixing pieces and a plurality of fixing pieces are welded on the outer surface of the movable arm assembly.
The technical scheme of the invention has the beneficial effects that:
1. according to the splice welding method, the middle section module with the earholes, the arm head module and the arm tail module are welded and formed respectively, then the parallelism positioning, the distance positioning and the centering positioning are carried out on the jig, the spliced front arm and rear arm are connected into a whole, the specific positions of the front arm upper plate, the front arm lower plate, the two front arm side plates, the rear arm upper plate, the rear arm lower plate and the two rear arm side plates can be corrected according to the situation under the condition that the relative positions of the earholes are strictly controlled, the welding expansion problem is not needed, the high-precision splice welding of the split movable arm is realized, the abrasion of a rotating shaft caused after the split movable arm is arranged on an excavator is avoided, and the service life of the excavator is ensured.
2. The method can directly obtain the desired position precision between the earholes, avoids the step of correcting after welding, simplifies the operation, saves the manufacturing time and saves the manufacturing cost.
3. The box-shaped structure enables the middle section of the movable arm to have strong deformation resistance, the local structure is stable, and simultaneously, the splice welding is convenient, so that the welding time is saved.
Drawings
FIG. 1 is an assembly view of a lower ear plate assembly;
FIG. 2 is an assembly view of a middle module;
FIG. 3 is an assembly view of the arm head;
FIG. 4 is an assembly view of the arm tail;
FIG. 5 is an assembly view of the boom assembly;
fig. 6 is a structural view of the product.
Marked in the figure as:
1-lower ear plate assembly, 11-lower ear plate, 12-lower sleeve;
2-box structure, 21-outer bending plate, 22-inner bending plate, 23-front reinforcing plate, 24-rear reinforcing plate, 25-side plate, 26-middle front welding strip and 27-middle rear welding strip;
3-upper ear plate;
4-arm head, 41-front ear plate, 42-U-shaped plate, 43-square plate and 44-arm head welding strip;
5-arm tail, 51-rear ear plate, 52-rear sleeve, 53-arm tail welding strip;
6-forearm, 61-upper forearm plate, 62-lower forearm plate, 63-side forearm plate;
7-rear arms, 71-rear arm upper plates, 72-rear arm lower plates, 73-rear arm side plates;
8 a-wire seat, 8 b-oil pipe fixing piece and 8 c-fixing piece.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Examples
As shown in fig. 1 to 6, the split welding method of the split boom of the present invention includes the steps of:
s1, preparing a middle section module: the outer bending plate 21, the inner bending plate 22, the front reinforcing plate 23, the rear reinforcing plate 24, the two side plates 25, the two lower ear plate assemblies 1 and the two upper ear plates 3 are taken and welded together according to a first design structure to form a middle section module. The first design structure is that an outer bending plate 21 is arranged at the upper part, an inner bending plate 22 is arranged at the lower part, a front reinforcing plate 23 is arranged at the front part and a rear reinforcing plate 24 is arranged at the rear part, the outer bending plate 21 and two side plates 25 positioned at two sides are welded to form a box-shaped structure 2, two lower ear plate assemblies 1 are welded at the outer surface of the inner bending plate 22 in parallel, and two upper ear plates 3 are welded at the outer bending plate 21 in parallel.
The middle section of the movable arm is a box-shaped structure 2 formed by welding a plurality of planes (a front reinforcing plate 23, a rear reinforcing plate 24, two side plates 25) and cambered surfaces (an outer bending plate 21 and an inner bending plate 22), wherein the two side plates 25, the outer bending plate 21 and the inner bending plate 22 form a square bent pipe, and the inner sides of the square bent pipe are reinforced by the front reinforcing plate 23 and the rear reinforcing plate 24. The box-shaped structure 2 enables the middle section of the movable arm to have strong deformation resistance, the local structure is stable, and simultaneously, the splice welding is convenient, so that the welding time is saved. In order to provide the middle section front welding strip 26 and the middle section rear welding strip 27, the front reinforcing plate 23 and the rear reinforcing plate 24 are spaced from the two ends of the square bent pipe. After ensuring the structural accuracy of the box-shaped structure 2, the two lower ear plate assemblies 11 and the two upper ear plates 3 are welded to the corresponding positions of the box-shaped structure 2, so that the relative positions and the parallelism of the upper ear holes of the lower ear plate assemblies 11 and the upper ear holes of the upper ear plates 3 are ensured.
S2, preparing an arm head module: two front ear plates 41, a U-shaped plate 42 and a square plate 43 are welded together according to a second design to form the arm head module 4. The second design structure is that two front ear plates 41 are symmetrically welded on two sides of a U-shaped plate 42, and a square plate 43 is welded in an opening of the U-shaped plate 42.
The front ear plate 41 is provided with an ear hole for hinging the bucket rod, the two front ear plates 41, the U-shaped plate 42 and the square plate 43 can enclose a box-shaped structure, and the coaxiality of the ear holes on the two front ear plates 41 is ensured while the local structure is stable.
S3, preparing an arm tail module: two rear ear plates 51 are welded to both sides of the rear sleeve 52 to form the arm tail module 5.
The rear sleeve 52 is a hinge point for controlling the rotation position between the movable arm and the frame, the coaxiality between the two rear ear plates 51 is ensured by the rear sleeve 52, meanwhile, the axial distance between the two rear ear plates 51 on the rear sleeve 52 is required to be ensured, and the local position accuracy is easy to control.
Because the middle section module, the arm head module and the arm tail module are mutually independent, the sequence of the steps S1, S2 and S3 can be exchanged.
S4, preparing a plate group: a forearm plate set including a forearm upper plate 61, a forearm lower plate 62, and two forearm side plates 63, and a rear arm plate set including a rear arm upper plate 71, a rear arm lower plate 72, and two rear arm side plates 73 are provided.
S5, assembly welding: positioning the middle section module, the arm head module 4 and the arm tail module 5 on a jig by utilizing the ear hole positioning of the lower ear plate assembly 1, the upper ear plate 3, the front ear plate 41 and the rear sleeve 52; welding a forearm plate group between the arm head module 4 and the middle section module to form a forearm 6; and welding the rear arm plate group between the arm tail module 5 and the middle section module to form a rear arm 7, thereby obtaining the movable arm assembly.
The positioning of the jig centering section module, the arm head 4 and the arm tail 5 comprises parallelism positioning, distance positioning and centering positioning, and is realized aiming at the positions of earholes. After the positions of the earholes of the middle module have been determined, the front arm 6 and the rear arm 7 are then spliced between the middle module, the arm head 4 and the adjacent two of the arm tail 5. Under the condition that the relative positions of the earholes are strictly controlled, the specific positions of the upper forearm plate 61, the lower forearm plate 62, the two side forearm plates 63, the upper rear arm plate 71, the lower rear arm plate 72 and the two side rear arm plates 73 can be corrected according to the situation, the problem of welding expansion and contraction is not needed, the high-precision splice welding of the split movable arm is realized, the abrasion of a rotating shaft caused after the split movable arm is arranged on the excavator is avoided, and the service life of the excavator is ensured. The method can directly obtain the desired position precision between the earholes, avoids the step of correcting after welding, simplifies the operation, saves the manufacturing time and saves the manufacturing cost.
S6, spot welding of parts: a plurality of wire seats 8a, a plurality of oil pipe fixing pieces 8b and a plurality of fixing pieces 8c are welded on the outer surface of the movable arm assembly.
The wire seat 8a, the oil pipe fixing member 8b and the fixing piece 8c are small parts on the boom. Since the boom and the arm are generally driven by the hydraulic cylinder, it is necessary to provide an oil pipe through which the hydraulic oil flows, the wire holder 8a is for closely attaching the oil pipe to the surface of the boom, the oil pipe fixing member 8b is for guiding and connecting to the hydraulic cylinder, and the fixing piece 8c is for fixing the hydraulic cylinder. The large parts on the movable arm are inevitably provided with structural errors and can not be welded, so that the large parts are required to be replaced, the small parts are not required to be welded to the large parts in advance, and the small parts are required to be welded after the movable arm assembly is ensured, so that invalid labor can be avoided.
As shown in fig. 1, the lower ear plate assembly 1 is formed by welding a lower ear plate 11 and a lower sleeve 12. The lower sleeve 12 is a hinge point for controlling the driving position between the boom and the frame, and the lower sleeve 12 needs to be connected to the middle section of the boom by means of the lower ear plate 11, so that the lower ear plate 11 and the lower sleeve 12 need to be welded into a whole in advance to be connected to the middle section module.
As shown in fig. 2 and 3, step S1 welds four middle front welding bars 26 inside the front edge of the box structure 2, step S2 welds four arm head welding bars 44 inside the rear edge of the arm head 4, and step S5 welds the front and rear ends of the front arm upper plate 61, the front arm lower plate 62, and the two front arm side plates 63 to one middle front welding bar 26 and one arm head welding bar 44, respectively. The middle front welding bar 26 and the arm head welding bar 44 are reserved platforms for welding the front arm 6 on the box-shaped structure 2 and the arm head 4, and for convenient adjustment, the lengths of the front arm upper plate 61, the front arm lower plate 62 and the two front arm side plates 63 are reduced appropriately, so that a certain gap is reserved between the two ends. The intermediate forward weld bar 26 and the arm head weld bar 44 can be offset a distance to provide an internal weld support surface. The upper forearm plate 61, the lower forearm plate 62 and the two side forearm plates 63 can be placed normally between the box-shaped structure 2 and the arm head 4 by means of this welded support surface, and the gap is filled with solder, so that the assembly can be completed.
As shown in fig. 3, the two front ear plates 41 are offset from the two rear end surfaces of the U-shaped plate 42. After the two positions are staggered back and forth, the arm head welding bars on the upper side, the lower side and the arm head welding bars on the left side and the right side are also staggered back and forth, so that the problem that the welding positions of the front arm 6 and the arm head 4 are in the same plane and are easy to tear is avoided.
As shown in fig. 2 and 4, in step S1, four middle rear welding bars 27 are welded inside the rear edge of the box structure 2, in step S3, one arm tail welding bar 53 is welded inside the rear edge of the two rear ear plates 51, in step S5, the rear ends of the rear arm upper plate 71 and the rear arm lower plate 72 are welded to the outer surface of the rear sleeve 52, the front ends of the rear arm upper plate 71 and the rear arm lower plate 72 are welded to one middle rear welding bar 27, and the front and rear ends of the rear arm side plates 73 are welded to one middle rear welding bar 27 and one arm tail welding bar 53, respectively. The middle rear welding strip 27 and the arm tail welding strip 53 are reserved platforms for welding the rear arm 7 on the box-shaped structure 2 and the arm tail 5, and for convenient adjustment, the lengths of the rear arm upper plate 71, the rear arm lower plate 72 and the two rear arm side plates 73 are appropriately reduced so that a certain gap is reserved between the two ends. The mid-section aft welding bar 27 and the arm tail welding bar 53 can extend a distance to provide an internal weld support surface. The rear arm upper plate 71, the rear arm lower plate 72 and the two rear arm side plates 73 can be normally placed between the box-shaped structure 2 and the arm tail 5 through the welding supporting surface, and the gap is filled with solder, so that the assembly can be completed. For welding to the rear sleeve 52, the rear ends of the rear arm upper plate 71 and the rear arm lower plate 72 are longer than the rear ends of the rear arm side plates 73, and the front and rear positions of the welding surface on the rear sleeve 52 and the arm tail welding strip 53 are necessarily offset, so that the problem of easy tearing can be avoided.
As shown in fig. 2, the front end surfaces of the outer bending plate 21 and the inner bending plate 22 are offset from the front end surfaces of the two side plates 25 in the front-rear direction, and the rear end surfaces of the outer bending plate 21 and the inner bending plate 22 are offset from the rear end surfaces of the two side plates 25 in the front-rear direction. In this way, the welding surfaces of the box-shaped structure 2 and the front arm 6 are not in the same plane, and the welding surfaces of the box-shaped structure 2 and the rear arm 7 are not in the same plane, so that structural weakness can be avoided and tearing can be prevented.
What has been described above is merely some embodiments of the present invention. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the invention.
Claims (7)
1. A split type movable arm splice welding method is characterized in that: the method comprises the following steps:
s1, preparing a middle section module: taking an outer bending plate (21), an inner bending plate (22), a front reinforcing plate (23), a rear reinforcing plate (24), two side plates (25), two lower ear plate assemblies (1) and two upper ear plates (3), and welding together according to a first design structure to form a middle section module;
s2, preparing an arm head module: the two front ear plates (41), a U-shaped plate (42) and a square plate (43) are spliced and welded together according to a second design structure to form an arm head module (4);
s3, preparing an arm tail module: welding two rear ear plates (51) on two sides of a rear sleeve (52) to form an arm tail module (5);
s4, preparing a plate group: providing a forearm panel set comprising a forearm upper panel (61), a forearm lower panel (62) and two forearm side panels (63), and a rear arm panel set comprising a rear arm upper panel (71), a rear arm lower panel (72) and two rear arm side panels (73);
s5, assembly welding: positioning the middle section module, the arm head module (4) and the arm tail module (5) on a jig by utilizing the lower ear plate assembly (1), the upper ear plate (3), the front ear plate (41) and the ear hole positioning of the rear sleeve (52); welding a forearm plate group between the arm head module (4) and the middle section module to form a forearm (6); welding a rear arm plate group between the arm tail module (5) and the middle section module to form a rear arm (7) so as to obtain a movable arm assembly;
the first design structure is that the outer bending plate (21) is arranged at the upper part, the inner bending plate (22) is arranged at the lower part, the front reinforcing plate (23) is arranged at the front part, the rear reinforcing plate (24) is arranged at the rear part, the outer bending plate (22) is welded with two side plates (25) positioned at two sides to form a box-shaped structure (2), the outer surface of the inner bending plate (22) is welded with two lower ear plate assemblies (1) in parallel, and the outer bending plate (21) is welded with two upper ear plates (3) in parallel;
step S1, welding four middle section front welding strips (26) on the inner side of the front edge of the box-shaped structure (2), and welding four arm head welding strips (44) on the inner side of the rear edge of the arm head module (4), wherein the front end and the rear end of the front arm upper plate (61), the front arm lower plate (62) and the front arm side plates (63) in step S5 are respectively welded on one middle section front welding strip (26) and one arm head welding strip (44);
step S1 is to weld four middle section back welding strips (27) on the inner side of the back edge of the box-shaped structure (2), step S3 is to weld one arm tail welding strip (53) on the inner side of the back edge of the two back ear plates (51), step S5 is to weld the back ends of the back arm upper plate (71) and the back arm lower plate (72) on the outer surface of the back sleeve (52), the front ends of the back arm upper plate (71) and the back arm lower plate (72) are to be welded on one middle section back welding strip (27), and the front end and the back end of the back arm side plate (73) are to be welded on one middle section back welding strip (27) and one arm tail welding strip (53) respectively.
2. The split boom splice welding method according to claim 1, characterized in that: the lower ear plate assembly (1) is formed by welding a lower ear plate (11) and a lower sleeve (12).
3. The split boom splice welding method according to claim 1, characterized in that: the two front lug plates (41) are staggered with the two rear end surfaces of the U-shaped plate (42) back and forth.
4. The split boom splice welding method of claim 3, further comprising: the front end surfaces of the outer bending plate (21) and the inner bending plate (22) are staggered with the front end surfaces of the two side plates (25) in front-back direction.
5. The split boom splice welding method of claim 3, further comprising: the rear end surfaces of the outer bending plate (21) and the inner bending plate (22) are staggered with the rear end surfaces of the two side plates (25) in front-back direction.
6. The split boom splice welding method according to claim 1, characterized in that: the second design structure is that two front lug plates (41) are symmetrically welded on two sides of the U-shaped plate (42), and square plates (43) are welded in openings of the U-shaped plate (42).
7. The split boom splice welding method according to claim 1, characterized in that: step S5 is followed by step S6, spot welding of the parts: and a plurality of wire seats (8 a), a plurality of oil pipe fixing pieces (8 b) and a plurality of fixing pieces (8 c) are welded on the outer surface of the movable arm assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310385951.4A CN116100184B (en) | 2023-04-12 | 2023-04-12 | Split welding method for split movable arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310385951.4A CN116100184B (en) | 2023-04-12 | 2023-04-12 | Split welding method for split movable arm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116100184A CN116100184A (en) | 2023-05-12 |
| CN116100184B true CN116100184B (en) | 2023-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310385951.4A Active CN116100184B (en) | 2023-04-12 | 2023-04-12 | Split welding method for split movable arm |
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| CN (1) | CN116100184B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20240165728A1 (en) * | 2022-11-22 | 2024-05-23 | Fca Us Llc | Extruded weld joint backing insert |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06313325A (en) * | 1993-04-30 | 1994-11-08 | Komatsu Ltd | Boom member of working machine for construction machine |
| JP4446471B2 (en) * | 2004-04-05 | 2010-04-07 | キャタピラージャパン株式会社 | Construction machine boom and arm connection structure |
| JP4938637B2 (en) * | 2007-12-21 | 2012-05-23 | 日立建機株式会社 | Welded joints between flat plates and welded joints between box-type structures |
| WO2012144037A1 (en) * | 2011-04-20 | 2012-10-26 | 日立建機株式会社 | Boom for construction machine |
| JP5665790B2 (en) * | 2012-03-30 | 2015-02-04 | 株式会社クボタ | Work equipment work equipment |
| JP5983666B2 (en) * | 2014-03-19 | 2016-09-06 | コベルコ建機株式会社 | Welded structures and construction machinery |
| JP2017145665A (en) * | 2016-02-19 | 2017-08-24 | 株式会社日立建機ティエラ | Construction machinery |
| CN109555176A (en) * | 2018-11-26 | 2019-04-02 | 中联重科股份有限公司 | Boom, method for manufacturing boom, and excavator |
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- 2023-04-12 CN CN202310385951.4A patent/CN116100184B/en active Active
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| CN116100184A (en) | 2023-05-12 |
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