Electric power tubular column welding equipment
By designing a power column welding equipment, the timely stress release of the weld is achieved using arc-shaped ring gears and transmission mechanisms, the internal stress problem caused by thermal expansion and contraction during the welding process is solved, and the welding strength is improved.
Patent Information
- Application Number
- CN202510547204.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2025-07-01
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Internal stress occurs during the welding process of power pipe columns due to uneven thermal expansion and contraction, which leads to the risk of cracks or brittle cracks in the weld, affecting the connection strength.
A power pipe column welding equipment is designed, and the load support wheel and welding gun are driven to rotate around the power pipe column through the arc-shaped ring gear, and the weld is reciprocated by the transmission mechanism to release welding stress in time.
Effectively avoid weld cracks or brittle cracks, increase the strength of the power pipe string connection, and ensure the welding quality.
Smart Images
Figure CN120228478A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of welding, and specifically to a welding device for power pipe columns. Background Art
[0002] During the construction of power projects, for the convenience of transportation, power pipe columns are usually transported to the construction site and assembled and welded on-site.
[0003] Currently, during the welding operation of power pipe columns, local overheating can cause the material to expand and then contract when cooling. This uneven thermal expansion and contraction will generate internal stress. If the stress is not released in time, there will be a risk of cracks or brittle fractures in the weld, resulting in a decrease in connection strength and potential safety hazards. Summary of the Invention
[0004] The purpose of the present invention is to provide a welding device for power pipe columns to solve the problem in the above-mentioned prior art that during the welding operation of power pipe columns, the internal stress generated by uneven thermal expansion and contraction cannot be released in time, resulting in the risk of cracks or brittle fractures in the weld.
[0005] To achieve the above purpose, the present invention provides the following technical solution: A welding device for power pipe columns, comprising: a base; two clamping members disposed on the base and coaxially clamping two power pipe columns respectively; a fixing frame fixedly connected to the base; an arc gear ring rotatably disposed on the fixing frame through a driving mechanism to rotate around the power pipe column; a welding torch radially slidably connected to one end of the arc gear ring; a sliding seat radially slidably connected to the other end of the arc gear ring and distributed at 180° from the welding torch in the circumferential direction of the arc gear ring. A carrier wheel rotatably connected to the sliding seat and capable of abutting against the circumferential side surface of two coaxially butt-jointed power pipe columns is provided. The carrier wheel rotates when the arc gear ring revolves around the power pipe column; at least one knocking rod rotatably connected to the sliding seat, which receives the rotational drive of the carrier wheel through a transmission mechanism to swing reciprocally and knock the weld seam.
[0006] Further, the transmission mechanism includes a first gear coaxially and fixedly connected to the carrier wheel, a second gear rotatably connected to the sliding seat and meshing with the first gear, a contact block fixedly connected to the knocking rod, and a convex platform coaxially and fixedly connected to the second gear. When the convex platform rotates, its edge abuts and cooperates with the contact block. A first elastic member disposed between the knocking rod and the sliding seat drives the knocking rod to move closer to the weld seam during the process of restoring deformation.
[0007] Further, the first elastic member is a torsion spring. The torsion spring is sleeved on the rotating shaft between the knocking rod and the sliding seat. One end of the torsion spring is fixedly connected to the knocking rod, and the other end is fixedly connected to the sliding seat.
[0008] Further, the edge of the convex platform includes two strip-shaped edges and two arc-shaped edges arranged alternately.
[0009] Further, a moving table is radially and slidably connected to the middle of the arc-shaped gear ring. A first connecting rod is rotatably connected between the moving table and the sliding seat, and a second connecting rod is rotatably connected between the moving table and the welding torch. An adjusting assembly for adjusting the sliding amount of the moving table on the arc-shaped gear ring is further included.
[0010] Further, an arc-shaped sliding rail in the shape of a major arc is fixedly connected to the fixing frame. An arc-shaped sliding groove that is slidably engaged with the arc-shaped sliding rail is formed on the arc-shaped gear ring. A sliding damping exists between the arc-shaped sliding groove and the arc-shaped sliding rail.
[0011] Further, the knocking rod includes a cross bar and a swing rod connected to each other. The swing rod is rotatably connected to the sliding seat, and the cross bar is parallel to the axial direction of the arc-shaped gear ring.
[0012] Further, the driving mechanism includes a driving portion, a connecting rod, and a first rack and a second rack that are vertically slidably connected to the connecting rod and have opposite tooth surfaces. The arc-shaped gear ring is located between the first rack and the second rack. The first rack is slidably connected to the fixing frame along a first path, and the second rack is slidably connected to the fixing frame along a second path. The driving portion drives the connecting rod to move horizontally so that the first rack and the second rack alternately engage with the arc-shaped gear ring, thereby causing the arc-shaped gear ring to rotate around the power pipe column.
[0013] Further, the first path includes a first sliding groove formed on the fixing frame. The first sliding groove includes a first horizontal section, a first inclined section, and a second horizontal section that is higher than the first horizontal section, which are sequentially connected from the first end to the second end of the first rack. The second path includes a third sliding groove formed on the fixing frame. The third sliding groove includes a third horizontal section, a second inclined section, and a fourth horizontal section that is lower than the third horizontal section, which are sequentially connected from the second end to the first end of the first rack.
[0014] Further, a vertical first elastic telescopic rod is fixedly connected to the first rack. The other end of the first elastic telescopic rod that is fixedly connected to the first rack and is vertically arranged is slidably connected to the first sliding groove. A horizontal second sliding groove is formed on the fixing frame. The other end of the first telescopic rod that is fixedly connected to the first rack and is vertically arranged is slidably connected to the second sliding groove.
[0015] In the above technical solution, a welding device for power pipe columns provided by the present invention. When the sliding seat and the welding torch both slide radially so that the supporting wheels abut against two power pipe columns and the welding torch approaches the two power pipe columns, then the driving mechanism drives the arc gear ring, the sliding seat, the supporting wheels and the welding torch to revolve around the two power pipe columns together. On the one hand, the welding torch welds the circumferential sides of the butt ends of the two power pipe columns. On the other hand, the supporting wheels abutting against the two power pipe columns rotate. Through the cooperation of the transmission mechanism, the cross bar of the knocking rod swings reciprocally to knock the welded seam after welding, thereby timely releasing the stress generated by the welding torch during welding, effectively avoiding the phenomenon of cracks or brittle fractures in the welded seam, and increasing the connection strength between the two power pipe columns. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.
[0017] Figure 1 It is the overall structure schematic diagram provided by the embodiment of the present invention; Figure 2 It is the working schematic diagram of the structure clamping member provided by the embodiment of the present invention; Figure 3 It is the structure schematic diagram of the arc gear ring provided by the embodiment of the present invention; Figure 4 It is the structure schematic of the transmission mechanism provided by the embodiment of the present invention Figure Ⅰ ; Figure 5 It is the structure schematic of the transmission mechanism provided by the embodiment of the present invention Figure Ⅱ ; Figure 6 It is the motion state diagram of the welding torch provided by the embodiment of the present invention; Figure 7 It is the partial structure schematic of the driving mechanism provided by the embodiment of the present invention Figure Ⅰ ; Figure 8 It is the structure schematic diagram of the fixing frame provided by the embodiment of the present invention; Figure 9 It is the structure schematic diagram of the driving part provided by the embodiment of the present invention; Figure 10 It is the partial structure schematic of the driving mechanism provided by the embodiment of the present invention Figure Ⅱ ; Figure 11 It is the partial structure schematic of the driving mechanism provided by the embodiment of the present invention Figure Ⅲ ; Figure 12 An enlarged view of A in Figure 11 the embodiment of the present invention; Figure 13 An enlarged view of B in Figure 11 the embodiment of the present invention; Figure 14 The motion state of the arc-shaped gear ring provided by the embodiment of the present invention Figure Ⅰ ; Figure 15 The motion state of the arc-shaped gear ring provided by the embodiment of the present invention Figure Ⅱ ; Figure 16 The motion state of the arc-shaped gear ring provided by the embodiment of the present invention Figure Ⅲ ; Figure 17 The motion state of the arc-shaped gear ring provided by the embodiment of the present invention Figure Ⅳ .
[0018] Explanation of reference numerals: 1. Base; 2. Clamping member; 3. Fixed frame; 4. Arc-shaped gear ring; 5. Driving mechanism; 51. First rack; 52. Second rack; 53. First sliding structure; 531. First chute; 5311. First horizontal section; 5312. First inclined section; 5313. Second horizontal section; 532. Second chute; 533. First transmission part; 5331. First elastic telescopic rod; 5332. First telescopic rod; 54. Second sliding structure; 541. Third chute; 5411. Third horizontal section; 5412. Second inclined section; 5413. Fourth horizontal section; 542. Fourth chute; 543. Second transmission part; 5431. Second elastic telescopic rod; 5432. Second telescopic rod; 55. Driving part; 551. Connecting rod; 552. Driving cylinder; 6. Welding torch; 7. Sliding seat; 8. Knocking rod; 81. Cross bar; 82. Swing rod; 9. Transmission mechanism; 91. First gear; 92. Second gear; 93. Boss; 931. Strip-shaped edge; 932. Arc-shaped edge; 94. Abutting block; 95. First elastic member; 10. Arc-shaped slide rail; 11. Abutting wheel; 12. Adjusting screw rod; 13. Moving table; 14. First connecting rod; 15. Second connecting rod; 16. Supporting wheel; 17. L-shaped groove; 18. Slide bar; 19. Protruding block. Detailed implementation manners
[0019] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further introduced in detail below with reference to the accompanying drawings.
[0020] Please refer to Figure 1-17, a kind of electric power pipe column welding device provided by an embodiment of the present invention includes a base 1, two clamping members 2 arranged on the base 1, a fixing frame 3, an arc-shaped gear ring 4, a driving mechanism 5, a welding torch 6, a sliding seat 7 and a knocking rod 8. The two clamping members 2 can adopt the existing technology and are used to coaxially clamp two sections of electric power pipes to be welded. The fixing frame 3 is fixedly connected to the base 1. As Figure 8 shown, the fixing frame includes a vertical rod body arranged on the base 1 and two horizontal rod bodies fixedly connected to the vertical rod body; an arc-shaped slide rail 10 in the shape of a major arc is fixedly connected to the vertical rod body of the fixing frame 3 through a support rod. An arc-shaped chute that is slidably matched with the arc-shaped slide rail 10 is provided on the arc-shaped gear ring 4. The arc-shaped gear ring 4 is coaxially located outside the electric power pipe, so as to drive the arc-shaped gear ring 4 to rotate around the electric power pipe column on the fixing frame 3. There is a sliding damping between the arc-shaped chute and the arc-shaped slide rail 10, which is used to prevent the arc-shaped gear ring 4 from sliding by itself due to its own weight.
[0021] The welding torch 6 is radially slidably connected to a first track on one end of the arc-shaped gear ring 4, and the sliding seat 7 is radially slidably connected to a second track on the other end of the arc-shaped gear ring 4. The sliding amounts of the welding torch 6 and the sliding seat 7 on the arc-shaped gear ring 4 can be adjusted separately or jointly. The welding torch 6 and the sliding seat 7 are distributed at 180° in the circumferential direction of the arc-shaped gear ring 4, that is to say, the sliding paths of the welding torch 6 and the sliding seat 7 are on the same diameter of the arc-shaped gear ring 4. A carrier wheel 16 that can abut against the circumferential side surface of two coaxially butted electric power pipe columns is rotatably connected to the sliding seat 7. The knocking rod 8 includes a swing rod 82 and a cross bar 81. One end of the swing rod 82 is fixedly connected to the cross bar 81, and the other end is rotatably connected to the sliding seat 7 through a rotating shaft. The length direction of the cross bar 81 is parallel to the length direction of the two electric power pipe columns after being coaxially aligned.
[0022] The driving mechanism 5 is used to drive the arc-shaped gear ring 4 to move along the arc-shaped slide rail 10 on the fixing frame 3, so that the arc-shaped gear ring 4 and the welding torch 6 and the sliding seat 7 thereon rotate around the electric power pipe column. The welding torch 6 can weld the circumference of the electric power pipe column. The carrier wheel 16 on the sliding seat 7 rotates by itself due to the friction with the circumferential side of the electric power pipe column. The rotation of the carrier wheel 16 drives the swing rod 82 to swing reciprocally relative to the sliding seat 7 through a transmission mechanism 9, so that the cross bar 81 repeatedly knocks the weld seam.
[0023] In the present invention, when both the sliding seat 7 and the welding torch 6 slide radially so that the supporting wheels 16 are in contact with the two power pipe columns and the welding torch 6 is close to the two power pipe columns, then the driving mechanism 5 drives the arc gear ring 4, the sliding seat 7, the supporting wheels 16 and the welding torch 6 to revolve around the two power pipe columns together. On the one hand, the welding torch 6 welds the circumferential sides of the butt ends of the two power pipe columns. On the other hand, the supporting wheels 16 in contact with the two power pipe columns rotate. Through the cooperation of the transmission mechanism 9, the cross bar 81 of the knocking rod 8 swings reciprocally to knock the welded seam, so as to timely release the stress generated by welding at the welded seam, effectively avoiding the phenomenon of cracks or brittle fractures in the welded seam and increasing the connection strength between the two power pipe columns.
[0024] Regarding the supporting wheels 16, it should be noted that the supporting wheels 16 are preferably two wheel bodies rotatably connected coaxially to the sliding seat 7. Each of the two wheel bodies is in contact with the circumferential side of a power pipe column. Anti-slip patterns are provided on the surfaces of the two wheel bodies, and there is a certain gap between the two wheel bodies to adapt to the welded seam generated during welding. As Figure 4 shown, there are two sets of combinations of the supporting wheels 16, the transmission mechanism 9 and the knocking rod 8, which are distributed in the circumferential direction of the arc gear ring 4.
[0025] Similarly, two abutting wheels 11 are rotatably connected to the housing of the welding torch 6. The two abutting wheels 11 are respectively in contact with the two sections of power pipe columns, and the welding torch 6 is located between the two abutting wheels 11.
[0026] Regarding the adjustment of the sliding amount of the welding torch 6 and the sliding seat 7 on the arc gear ring 4, refer to Figure 7-8 , a moving platform 13 is slidably connected to the third track fixedly connected to the arc gear ring 4. A threaded sleeve is fixedly embedded on the moving platform 13. An adjusting screw rod 12 is rotatably connected to the third track. The adjusting screw rod 12 is threadedly connected to the threaded sleeve. The moving platform 13 is connected to the sliding seat 7 through a first connecting rod 14. One end of the first connecting rod 14 is rotatably connected to the sliding seat 7, and the other end is rotatably connected to the moving platform 13. The moving platform 13 is connected to the welding torch 6 through a second connecting rod 15. One end of the second connecting rod 15 is rotatably connected to the welding torch 6, and the other end is rotatably connected to the moving platform 13.
[0027] The adjusting lead screw 12 is located on the perpendicular bisector between the sliding seat 7 and the welding torch 6, and the length direction of the adjusting lead screw 12 is the radial direction of the arc-shaped gear ring 4. Thus, when the adjusting lead screw 12 rotates, the moving platform 13 moves linearly along the length direction of the adjusting lead screw 12, and under the cooperation of the first connecting rod 14 and the second connecting rod 15, the sliding seat 7 and the welding torch 6 are driven to slide relative to each other until the two wheel bodies of the supporting wheel 16 respectively abut against and support two power pipe columns, and the two abutting wheels 11 also respectively abut against the two power pipe columns, facilitating the welding operation of the welding torch 6. Compared with the separate adjustment of the sliding seat 7 and the welding torch 6, in the above technical solution, the supporting wheel 16 and the abutting wheel 11 are synchronously adjusted to adapt to the power pipe columns, greatly reducing the time for preparatory work such as position adjustment before welding.
[0028] Wherein, the transmission mechanism 9 includes a first gear 91, a second gear 92, a boss 93, an abutting block 94 and a first elastic member 95. The first gear 91 is coaxially and fixedly connected to the supporting wheel 16; the second gear 92 is rotatably connected to the sliding seat 7 and meshes with the first gear 91; the boss 93 is coaxially and fixedly connected to the second gear 92. The boss 93 includes two strip-shaped edges 931 and two arc-shaped edges 932, and the strip-shaped edges 931 and the arc-shaped edges 932 are arranged alternately; the abutting block 94 is fixedly connected to the swing rod 82, and the abutting block 94 can abut and cooperate with the rotating boss 93; the process of the first elastic member 95 restoring its elastic deformation drives the swing rod 82 to rotate so that the cross bar 81 of the knocking rod 8 can approach and knock the weld seam. Among them, the pitch diameter of the first gear 91 is larger than the pitch diameter of the second gear 92. In a preferred state, when the first gear 91 rotates one circle, the engaged second gear 92 rotates n circles (n is at least greater than 3). Among them, the first elastic member 95 is a torsion spring. The torsion spring is sleeved on the rotating shaft. One end of the torsion spring is fixedly connected to the swing rod 82, and the other end is fixedly connected to the sliding seat 7.
[0029] When the supporting wheel 16 rotates, it drives the first gear 91 to rotate. The first gear 91 drives the second gear 92 meshing with it to rotate. The second gear 92 drives the boss 93 to rotate. The boss 93 abuts and cooperates with the abutting block 94 and, under the cooperation of the first elastic member 95, drives the cross bar 81 of the knocking rod 8 to repeatedly knock the weld seam. Among them, when the arc-shaped edge 932 of the boss 93 abuts and cooperates with the abutting block 94, at this time, the cross bar 81 of the knocking rod 8 is farthest from the weld seam. During the process of the strip-shaped edge 931 of the boss 93 abutting and cooperating with the abutting block 94, the process of the first elastic member 95 restoring its elastic deformation is used to drive the cross bar 81 of the knocking rod 8 to knock the weld seam.
[0030] For the clamping member 2, preferably, each clamping member 2 includes a first clamp fixedly connected to the base 1 and a second clamp slidably connected to the base 1 vertically. During the process of the second clamp sliding close to the first clamp, it is used to clamp the corresponding power pipe column. An adjusting bolt is provided between the second clamp and the base 1. A guide rod arranged in parallel with the adjusting bolt is also fixedly connected to the base 1. A slider is slidably connected to the guide rod vertically, and the slider is threadedly connected to the adjusting bolt. Thus, when the adjusting bolt is rotated, the slider will move linearly along the length direction of the guide rod, so that the second clamp approaches the first clamp to clamp the corresponding power pipe column.
[0031] In the present invention, a preferred technical solution of the driving mechanism 5 is also provided. The driving mechanism 5 includes a first rack 51, a second rack 52 and a driving part 55. The driving part 55 includes a connecting rod 551 and a driving cylinder 552. The housing of the driving cylinder 552 is fixedly connected to the base 1, and the telescopic end of the driving cylinder 552 is fixedly connected to the connecting rod 551. The tooth surfaces of the first rack 51 and the second rack 52 face each other and are both slidably connected to the connecting rod 551 vertically. At the same time, the first rack 51 is movably arranged on the transverse rod body through a first sliding structure 53, and the second rack 52 is movably arranged on another transverse rod body through a second sliding structure 54. The first rack 51 and the second rack 52 are arranged in a front-back dislocation in the length direction of the transverse rod body.
[0032] Among them, the length direction of the first rack 51 and the second rack 52 is the length direction of the transverse rod body. Specifically, the driving part 55 drives the first rack 51 and the second rack 52 that are parallel and in front-back dislocation to move along the length direction of the transverse rod body.
[0033] In the above technical solution, the first rack 51 drives the arc-shaped gear ring 4 to revolve relative to the power pipe column until the arc-shaped gear ring 4 meshes with the second rack 52 and the arc-shaped gear ring 4. At this time, the first rack 51 and the arc-shaped gear ring 4 are in a tooth-disengaged state. Then, the first rack 51 and the second rack 52 are reset synchronously, and the second rack 52 continues to drive the arc-shaped gear ring 4 to revolve relative to the power pipe column until the arc-shaped gear ring 4 meshes with the first rack 51 again. At this time, the second rack 52 and the arc-shaped gear ring 4 are in a tooth-disengaged state. Among them, the arc-shaped gear ring 4 in this state is preferably a major arc gear ring.
[0034] Among them, the first sliding structure 53 includes a first chute 531, a second chute 532 and a first transmission part 533. The first chute 531 includes a first horizontal section 5311, a first inclined section 5312 and a second horizontal section 5313 that are sequentially connected from the first end to the second end of the first rack 51. The lower inclined end of the first inclined section 5312 is connected to the first horizontal section 5311, and the upper inclined end of the first inclined section 5312 is connected to the second horizontal section 5313. The first transmission part 533 includes a first elastic telescopic rod 5331 and a first telescopic rod 5332. One end of the first elastic telescopic rod 5331 is slidably connected to the first chute 531, and the other end is fixedly connected to the first rack 51. One end of the first telescopic rod 5332 is slidably connected to the second chute 532, and the other end is fixedly connected to the first rack 51.
[0035] The structure of the second sliding structure 54 is basically the same as that of the first sliding structure 53, but there are differences in layout. The second sliding structure 54 includes a third chute 541, a fourth chute 542 and a second transmission part 543. The third chute 541 includes a third horizontal section 5411, a second inclined section 5412 and a fourth horizontal section 5413 that are sequentially connected from the second end to the first end of the first rack 51. The upper inclined end of the second inclined section 5412 is connected to the third horizontal section 5411, and the lower inclined end of the second inclined section 5412 is connected to the fourth horizontal section 5413. The second transmission part 543 includes a second elastic telescopic rod 5431 and a second telescopic rod 5432. One end of the second elastic telescopic rod 5431 is slidably connected to the third chute 541, and the other end is fixedly connected to the second rack 52. One end of the second telescopic rod 5432 is slidably connected to the fourth chute 542, and the other end is fixedly connected to the second rack 52.
[0036] It should be noted that the first end of the first rack 51 is the end far from the connecting rod 551, and the first end of the first rack 51 is the end close to the connecting rod 551. The first elastic telescopic rod 5331 is slidably connected to the first chute 531 through a first guide block, and the first telescopic rod 5332 is slidably connected to the second chute 532 through a second guide block. The second elastic telescopic rod 5431 is slidably connected to the third chute 541 through a third guide block, and the second telescopic rod 5432 is slidably connected to the fourth chute 542 through a fourth guide block.
[0037] Among them, an L-shaped groove 17 is formed in the connecting rod 551. The L-shaped groove 17 includes a connected horizontal groove and a vertical groove. A sliding rod 18 is fixedly connected to the first rack 51. A first convex block 19 is fixedly connected to the end of the sliding rod 18 away from the first rack 51. The first convex block 19 is slidably engaged with the L-shaped groove 17. Among them, the L-shaped groove 17 includes a transverse groove with a length direction consistent with the length direction of the transverse rod body and a vertical groove with a length direction consistent with the length direction of the vertical rod body.
[0038] When the driving mechanism works, in the initial state, since the first rack 51 and the second rack 52 are arranged in a front-back dislocation manner, at this time, the first rack 51 will be in a meshing state with the arc-shaped gear ring 4. One end of the first elastic telescopic rod 5331 is fixedly connected to the first guide block located in the second horizontal section 5313 of the first chute 531 (at this time, the first elastic telescopic rod 5331 is in a compressed state, but not compressed to the extreme state, and the process of its restoring elastic deformation is used to drive the first rack 51 to press down so that the first rack 51 is in a meshing state with the arc-shaped gear ring 4), while the second guide block at one end of the first telescopic rod 5332 is located in the second chute 532 (at this time, the first telescopic rod 5332 is in a state of being compressed to the extreme). Based on this, at this time, the first rack 51 can slide vertically relative to the connecting rod 551; and at this time, the second rack 52 is in a state of being disengaged from the arc-shaped gear ring 4. At this time, the third guide block fixedly connected to one end of the second elastic telescopic rod 5431 is located in the third horizontal section 5411 of the third chute 541 (the second elastic telescopic rod 5431 is in a state of being compressed to the limit at this time). Similarly, the fourth guide block at one end of the second telescopic rod 5432 is located in the fourth chute 542 (at this time, the second telescopic rod 5432 is in a state of being compressed to the extreme).
[0039] When the driving cylinder 552 of the driving part 55 drives the connecting rod 551 to slide relative to the transverse rod body of the fixed frame 3, at this time, the first bump 19 moves from the intersection point of the vertical groove and the horizontal groove of the L-shaped groove 17 to the closed end of the horizontal groove, so that the connecting rod 551 can push the arc-shaped gear ring 4 (at this time, the second rack 52 and the first rack 51 are still in a misaligned state, and the second rack 52 is not engaged with the arc-shaped gear ring 4). After that, when the connecting rod 551 continues to move, it drives the component that can be engaged with the arc-shaped gear ring 4 to force the arc-shaped gear ring 4 to rotate more than half a turn and less than three-quarters of a turn. During this process, the first guide block fixedly connected to one end of the first elastic telescopic rod 5331 moves from the second horizontal section 5313 to the first horizontal section 5311 so that the first telescopic rod 5332 is compressed to the limit state. The third guide block fixed to one end of the second elastic telescopic rod 5431 moves from the third horizontal section 5411 to the fourth horizontal section 5413, so that the telescopic end of the second elastic telescopic rod 5431 is disengaged from the state of being compressed to the extreme (but the second elastic telescopic rod 5431 is still in a compressed state, and the elastic force for restoring its elastic deformation is used to drive the second telescopic rod 5432 to be compressed to the extreme state). Since both the first elastic telescopic rod 5331 and the first telescopic rod 5332 are compressed to the limit state, the first rack 51 will not slide vertically relative to the connecting rod 551. And the second elastic telescopic rod 5431 is released from the state of being compressed to the extreme. At this time, when the first rack 51 is about to disengage from the arc-shaped gear ring 4, the second rack 52 will abut and engage with the arc-shaped gear ring 4. Since the first rack 51 is still engaged with the arc-shaped gear ring 4, the second rack 52 and the connecting rod 551 will slide vertically downward and disengage from the arc-shaped gear ring 4. When the first rack 51 completely disengages from the arc-shaped gear ring 4, the elastic force of the second elastic telescopic rod 5431 for restoring elastic deformation drives the second rack 52 to slide vertically upward relative to the connecting rod 551 and engage with the arc-shaped gear ring 4.
[0040] Up to this point, when the driving cylinder 552 contracts, the second rack 52 will first engage with the arc-shaped gear ring 4 to make it continue to revolve around the electric pipe string by a certain angle. During this process, the first bump 19 will move from the closed end of the horizontal groove to the junction of the horizontal groove and the vertical groove. After that, the second rack 52 will move synchronously with the first rack 51, and the second rack 52 will always engage with the arc-shaped gear ring 4 until it disengages from the arc-shaped gear ring 4. Since the second rack 52 can drive the arc-shaped gear ring 4 to rotate half a turn during the engagement process with the arc-shaped gear ring 4, when the second rack 52 disengages from the arc-shaped gear ring 4, the second elastic telescopic rod 5431 and the second telescopic rod 5432 are respectively compressed to the limit state in the third chute 541 and the fourth chute 542 (at this time, there is no relative sliding between the second rack 52 and the connecting rod 551). At the same time, the first elastic telescopic rod 5331 returns to have a certain elasticity so that the first rack 51 and the connecting rod 551 can relatively slide (at this time, the first bump 19 will slide along the vertical groove of the L-shaped groove 17) to facilitate the engagement of the first rack 51 with the arc-shaped gear ring 4. After that, the connecting rod 551 continues to move. At this time, the first rack 51 drives the arc-shaped gear ring 4 to rotate in the reverse direction to return to the initial state under the engagement with the arc-shaped gear ring 4.
[0041] The above process will realize the welding work of the welding torch 6 on two electric pipe strings. At this time, since the two knocking rods 8 only knock on the welds that are more than half a turn and less than one turn during one revolution of the arc-shaped gear ring 4, it is necessary to drive the arc-shaped gear ring 4 to rotate one more turn to complete the knocking work on the welds, so as to better release the stress generated during welding. At the same time, since there is a certain distance between the welding torch 6 and the knocking rods 8, it can avoid the knocking rods 8 knocking on the welds immediately after the welding torch 6 finishes welding and affecting the welding effect, realizing the operation process of knocking on the welds to release stress after a certain time of welding cooling.
[0042] Only some exemplary embodiments of the present invention have been described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.
Claims
1. A power pipe column welding device, comprising a base (1) and two groups of clamping members (2) arranged on the base (1) and respectively coaxially clamping two power pipe columns, characterized in that: Also includes: A fixing frame (3) fixedly connected to the base (1); An arc-shaped gear ring (4) is rotatably arranged on a fixed frame (3) through a driving mechanism (5) so as to rotate around the power pipe column; A welding gun (6) radially slidably connected to one end of the arc-shaped gear ring (4); A sliding seat (7) is radially slidably connected to the other end of the arc-shaped gear ring (4) and is distributed at 180 degrees with the welding gun (6) in the circumferential direction of the arc-shaped gear ring (4). A supporting wheel (16) capable of abutting against the circumferential side surfaces of two coaxially connected power pipe columns is rotatably connected to the sliding seat (7). The arc-shaped gear ring (4) drives the supporting wheel (16) to rotate when it revolves around the power pipe column. At least one striking rod (8) is rotatably connected to the sliding seat (7), and is driven by the rotation of the supporting wheel (16) through a transmission mechanism (9) to strike the weld seam in a reciprocating swing.
2. The electric power pipe column welding equipment according to claim 1, characterized in that: The transmission mechanism (9) comprises a first gear (91) coaxially fixedly connected to the supporting wheel (16), a second gear (92) rotatably connected to the sliding seat (7) and meshing with the first gear (91), an abutment block (94) fixedly connected to the knocking rod (8), and a boss (93) coaxially fixedly connected to the second gear (92); when the boss (93) rotates, its edge abuts against the abutment block (94); and a first elastic member (95) arranged between the knocking rod (8) and the sliding seat (7) drives the knocking rod (8) to move close to the weld seam during the process of restoring deformation.
3. The electric power pipe column welding equipment according to claim 2, characterized in that: The first elastic member (95) is a torsion spring, which is sleeved on the rotating shaft between the knocking rod (8) and the sliding seat (7), one end of the torsion spring is fixedly connected to the knocking rod (8), and the other end is fixedly connected to the sliding seat (7).
4. The electric power pipe column welding equipment according to claim 2, characterized in that: The edge of the boss (93) comprises two strip edges (931) and two arc edges (932) that are alternately arranged.
5. The electric power pipe column welding equipment according to claim 1, characterized in that: A moving platform (13) is radially slidably connected to the middle of the arc-shaped gear ring (4); a first connecting rod (14) is rotatably connected between the moving platform (13) and the sliding seat (7); and a second connecting rod (15) is rotatably connected between the moving platform (13) and the welding gun (6); and an adjusting component for adjusting the sliding amount of the moving platform (13) on the arc-shaped gear ring (4) is also included.
6. The electric power pipe column welding equipment according to claim 1, characterized in that: The fixed frame (3) is fixedly connected to an arc-shaped arc-shaped slide rail (10), and the arc-shaped gear ring (4) is provided with an arc-shaped slide groove that slidably cooperates with the arc-shaped slide rail (10), and there is sliding damping between the arc-shaped slide groove and the arc-shaped slide rail (10).
7. The electric power pipe column welding equipment according to claim 1, characterized in that: The knocking rod (8) comprises a connected crossbar (81) and a swing rod (82); the swing rod (82) is rotationally connected to the sliding seat (7); and the crossbar (81) is parallel to the axial direction of the arc-shaped gear ring (4).
8. The electric power pipe column welding equipment according to claim 1, characterized in that: The driving mechanism (5) comprises a driving part (55), a connecting rod (551), and a first rack (51) and a second rack (52) which are vertically slidably connected to the connecting rod (551) and have tooth surfaces facing each other; the arc-shaped gear ring (4) is located between the first rack (51) and the second rack (52); the first rack (51) is slidably connected to the fixing frame (3) along a first path; the second rack (52) is slidably connected to the fixing frame (3) along a second path; the driving part (55) drives the connecting rod (551) to move horizontally so that the first rack (51) and the second rack (52) are alternately meshed with the arc-shaped gear ring (4), thereby causing the arc-shaped gear ring (4) to rotate around the power column.
9. The electric power pipe column welding equipment according to claim 8, characterized in that: The first path comprises a first slide groove (531) formed on the fixing frame (3), the first slide groove (531) comprising a first horizontal section (5311), a first inclined section (5312) and a second horizontal section (5313) which are connected in sequence from the first end to the second end of the first rack (51); The second path comprises a third slide groove (541) opened on the fixing frame (3), and the third slide groove (541) comprises a third horizontal section (5411), a second inclined section (5412), and a fourth horizontal section (5413) lower than the third horizontal section (5411) which are sequentially connected from the second end to the first end of the first rack (51).
10. The electric power pipe column welding equipment according to claim 9, characterized in that: A vertical first elastic telescopic rod (5331) is fixedly connected to the first rack (51), and the other end of the vertically arranged first elastic telescopic rod (5331) fixedly connected to the first rack (51) is slidably connected to the first sliding groove (531); A horizontal second slide groove (532) is provided on the fixed frame (3), and the other end of the first telescopic rod (5332) which is fixedly connected to the first rack (51) and arranged vertically is slidably connected to the second slide groove (532).