CN108971701B - Special positioning device for repairing surfacing welding of omega-shaped welding seams in middle of CRDM (Crdm) - Google Patents
Special positioning device for repairing surfacing welding of omega-shaped welding seams in middle of CRDM (Crdm) Download PDFInfo
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- CN108971701B CN108971701B CN201811060964.XA CN201811060964A CN108971701B CN 108971701 B CN108971701 B CN 108971701B CN 201811060964 A CN201811060964 A CN 201811060964A CN 108971701 B CN108971701 B CN 108971701B
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- connecting plate
- welding gun
- slide seat
- crdm
- inclination angle
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- 238000003466 welding Methods 0.000 title claims abstract description 95
- 239000000725 suspension Substances 0.000 claims abstract description 31
- 239000011324 bead Substances 0.000 claims description 8
- 235000010599 Verbascum thapsus Nutrition 0.000 abstract description 6
- XKRFYHLGVUSROY-UHFFFAOYSA-N argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003247 decreasing Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000002194 synthesizing Effects 0.000 description 1
Images
Classifications
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/24—Features related to electrodes
- B23K9/28—Supporting devices for electrodes
Abstract
The invention relates to a special positioning device for repairing omega-shaped welding seams in the middle of CRDM (CrDM) by surfacing, which comprises an annular suspension, a two-shaft sliding seat mechanism, a welding gun inclination angle driving part and a control mechanism, wherein a welding gun is connected to the welding gun inclination angle driving part and always points to the central line of the annular suspension, the two-shaft sliding seat mechanism is positioned at one side of the welding gun and comprises a first adjusting sliding seat, a second adjusting sliding seat, a connecting plate assembly and a driving assembly, the connecting plate assembly comprises a first connecting plate and a second connecting plate, the first connecting plate and the second connecting plate are respectively connected with the first adjusting sliding seat and the second adjusting sliding seat, and the first connecting plate and the second connecting plate are connected and can be adjusted in the. The two-shaft sliding seat mechanism is translated to one side of the welding gun, the space at the lower part of the circular suspension is fully utilized, and the reciprocating motion of the welding torch during welding is completed through the two-shaft combined motion; through the up-and-down adjustment of the first connecting plate and the second connecting plate, the up-and-down space of the welding gun is increased, and the welding is convenient.
Description
Technical Field
The invention relates to the field of CRDM (CrDM), in particular to a special positioning device for surfacing repair of omega welding seams in the middle of CRDM.
Background
When arc welding is performed, the level of the arc voltage depends on the change of the arc length, and when the arc is elongated, the arc voltage is increased, and when the arc length is shortened, the arc voltage is decreased. Arc Voltage Control Arc Voltage Control (AVC) is a regulation method for controlling Voltage during Arc welding, and can improve the safety and economy of system operation.
When the argon arc welding surfacing maintenance operation is carried out on the omega-shaped sealing weld joint, CRDM Overlay surfacing repair equipment is adopted. The CRDM equipment comprises a circular ring-shaped suspension 1 and a welding gun 4 connected to the lower part of the circular ring-shaped suspension, and the orientation of the welding gun always points to the central line O of the circular ring-shaped suspension.
First, in order to facilitate adjustment of the displacement of the welding gun 4 with respect to the horizontal and vertical directions, a cross slide mechanism 2' is generally provided. The cross slide 2 'is directly connected to the welding gun 4, which requires the cross slide 2' to be arranged in the extending direction of the welding gun 4, as shown in fig. 2 and 3. However, a plurality of CRDM devices are generally arranged together, as shown in fig. 1, the spacing between the CRDM pressure housings is small, and the cross sliding mechanism 2 'itself has a certain volume, so that there is no space at all on the torus suspension 1 to connect with the cross sliding mechanism 2'.
Secondly, because welder 4 is connected in the lower part of circle annular suspension 1, welder 4 is all limited to the distance on ground, welder 4 to the distance of circle annular suspension 1, and under the condition of welder 4 rigidity in vertical direction (cross glide machanism 2' is used for the displacement of welder 4 when the welding to adjust), the work piece welding seam is above welder, perhaps in welder below, and narrow position can cause the welded space not enough for the welding is difficult.
Disclosure of Invention
The invention aims to provide a special positioning device for surfacing repair of omega welding seams in the middle of CRDM.
In order to achieve the purpose, the invention adopts the technical scheme that:
a special positioning device for repairing a omega-shaped welding seam in the middle of CRDM (CrDM) by surfacing comprises a circular ring-shaped suspension, a two-shaft sliding seat mechanism connected to the lower part of the circular ring-shaped suspension, a welding gun inclination angle driving part connected to the two-shaft sliding seat mechanism, and a control mechanism, wherein a welding gun is connected to the welding gun inclination angle driving part, the direction of the welding gun always points to the central line of the circular ring-shaped suspension, the two-shaft sliding seat mechanism is positioned on one side of the welding gun,
the two-axis slide seat mechanism comprises a first adjusting slide seat, a second adjusting slide seat, a connecting plate component connected with the first adjusting slide seat and the second adjusting slide seat, a driving component for driving the second adjusting slide seat to move relative to the first adjusting slide seat and a welding gun inclination angle driving component to move relative to the second adjusting slide seat, wherein the first adjusting slide seat is connected on the circular ring-shaped suspension frame, the welding gun inclination angle driving component is connected on the second adjusting slide seat,
the connecting plate assembly comprises a first connecting plate and a second connecting plate, the first connecting plate is connected with the first adjusting sliding seat, the second connecting plate is connected with the second adjusting sliding seat, the first connecting plate is connected with the second connecting plate, and the second connecting plate can be adjusted in the vertical direction relative to the first connecting plate.
Preferably, the planes of the first connecting plate and the second connecting plate are parallel or coplanar.
Further preferably, the second link plate is rotatably adjustable relative to the first link plate on the surface thereof.
Preferably, the driving assembly includes a first driving component for driving the second adjusting slide to move in a horizontal direction relative to the first adjusting slide, and a second driving component for driving the welding gun inclination driving component to move in a vertical direction, and the first driving component and the second driving component synchronously drive the second adjusting slide and the welding gun inclination driving component to move.
Preferably, the first adjusting slide comprises a first slide box connected to the lower part of the circular suspension, and a first slide rail arranged in the first slide box and extending along the horizontal direction, and the second adjusting slide is connected to the first slide rail through the connecting plate assembly.
Preferably, the second adjusting slide seat comprises a second slide seat box body and a second slide rail arranged in the second slide seat box body and extending along a second direction, and the welding gun inclination angle driving part is connected to the second slide rail through a third connecting plate.
Preferably, the special positioning device further comprises a hanger, and the circular ring-shaped suspension is connected to the hanger.
Further preferably, the hanger can be stretched and retracted in the vertical direction and can rotate around the center line of the hanger.
Preferably, the control mechanism is a PLC capable of realizing differential motion control.
Preferably, the welding gun inclination angle driving part and the driving assembly are connected with the control mechanism.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages and effects:
1. the two-shaft sliding seat mechanism is translated to one side of the welding gun, the space at the lower part of the circular suspension is fully utilized under the condition that the space among a plurality of CRDM devices is limited, and meanwhile, the reciprocating motion of a welding torch in the vertical and horizontal directions and with an inclination angle during welding can be completed through the two-shaft combined motion;
2. according to the invention, the space above or below the welding gun is enlarged through the vertical adjustment of the second connecting plate relative to the first connecting plate, so that the welding is convenient.
Drawings
FIG. 1 is a schematic top view of a prior art distribution of multiple CRDM devices;
FIG. 2 is a schematic top view of a prior art layout of a single CRDM device;
FIG. 3 is a schematic side view of a prior art layout of a single CRDM device;
FIG. 4 is a perspective view of the present invention;
FIG. 5 is a schematic front view of the present invention;
FIG. 6 is a perspective view of the present invention (with collision avoidance features omitted);
FIG. 7 is a schematic view of a hanger of the present invention;
FIG. 8 is a first schematic view of the first and second connection plates of the present invention;
FIG. 9 is a second schematic view of the first and second connection plates of the present invention;
FIG. 10 is a schematic top view of the layout of the present invention;
FIG. 11 is a schematic side view of an arrangement according to the present invention
Wherein: 1. a circular suspension; 2. a two-axis slide carriage mechanism; 20. a first adjustment slide; 200. a first carriage housing; 201. a first slide rail; 21. a second adjustment slide; 210. a second carriage housing; 211. a second slide rail; 22. a first connecting plate; 23. a second connecting plate; 24. a first drive member; 25. a second drive member; 3. a welding gun inclination angle driving part; 30. a third connecting plate; 4. a welding gun; 5. an anti-collision component; 50. a connecting rod; 51. an alarm component; 6. a hanger.
Detailed Description
The invention is further described below with reference to the accompanying drawings and embodiments:
as shown in fig. 4-6, the special positioning device for repairing the CRDM omega weld by bead welding comprises a circular suspension 1, a two-axis slide carriage mechanism 2 connected to the lower part of the circular suspension 1, a welding gun inclination angle driving part 3 connected to the two-axis slide carriage mechanism 2, an anti-collision part 5 connected to the lower part of the circular suspension 1, and a control mechanism, wherein the welding gun 4 is connected to the welding gun inclination angle driving part 3. Wherein:
as shown in fig. 10: the two-axis slide carriage mechanism 2 is located on one side of the welding gun 4 and includes a first adjustment slide 20, a second adjustment slide 21, a linkage plate assembly connecting the first adjustment slide 20 and the second adjustment slide 21, and a drive assembly. Specifically, the method comprises the following steps:
the first adjusting slide 20 is connected to the circular suspension 1, and includes a first slide box 200, and a first slide rail 201 disposed in the first slide box 200 and extending along a horizontal direction; the second adjusting slide 21 is connected to the first slide rail 201 through a connecting plate assembly, and includes a second slide carriage box 210 and a second slide rail 211 arranged in the second slide carriage box 210 and extending in a vertical direction, and the welding gun inclination driving part 3 is connected to the second slide rail 211.
The connecting plate assembly comprises a first connecting plate 22 and a second connecting plate 23, wherein the surfaces of the first connecting plate 22 and the second connecting plate 23 are parallel, and theoretically, the two connecting plates are coplanar. The first connecting plate 22 is connected to the first slide rail 201 of the first adjustment carriage 20, the second connecting plate 23 is connected to the second carriage box 210 of the second adjustment carriage 21, the first connecting plate 22 and the second connecting plate 23 are connected to each other, and the second connecting plate 23 is vertically adjustable relative to the first connecting plate 22. When the welding position of the welding seam is positioned above the welding gun, the second connecting plate 23 is downwards adjusted relative to the first connecting plate 22, so that the space above the welding gun is enlarged, and the welding can be realized; when the welding position of the weld is below the welding gun, the second connecting plate 23 is adjusted upward relative to the first connecting plate 22, increasing the space below the welding gun. Furthermore, the second web 23 is preferably rotationally adjustable on the surface thereof relative to the first web 22, as shown in fig. 8 and 9, so that the welding torch can also be displaced in a smooth path in a non-horizontal, vertical direction.
The driving assembly comprises a first driving part 24 for driving the second adjusting slide seat 21 to move along the horizontal direction relative to the first adjusting slide seat 20, and a second driving part 25 for driving the welding gun inclination angle driving part 3 to move along the vertical direction, wherein the first driving part 24 and the second driving part 25 can adopt servo motors, the first driving part 24 and the second driving part 25 are connected with a control mechanism and synchronously drive the second adjusting slide seat 21 and the welding gun inclination angle driving part 3 to move, the synthesis of a smooth path is realized, and the orientation of the welding gun 4 always points to the central line O of the circular ring-shaped suspension 1. The method specifically comprises the following steps: the first driving part 24 drives the connecting plate assembly to move along the first sliding rail 201, so as to drive the second adjusting slide 21 to move in the horizontal direction; the second driving part 25 drives the welding gun inclination angle driving part 3 to move along the second slide rail 211 so as to move in the vertical direction, and the motions in the two directions are synchronously synthesized to form the vertical reciprocating motion of the welding gun in the AVC feedback process when the welding is finished.
The welding torch inclination driving part 3 is connected to the second slide rail 211 of the second adjusting slide 21 through the third connecting plate 30, and the welding torch inclination driving part 3 may adjust the inclination of the welding torch 4 by using a rotary servo motor, as shown in fig. 11. The special positioning device is matched with the welding gun inclination angle driving part 3, and also comprises a limiting part for limiting the inclination angle of the welding gun 4, wherein the limiting part limits the horizontal upward inclination angle of the welding gun 4 to be 0-90 degrees, and limits the horizontal downward inclination angle of the welding gun 4 to be 0-90 degrees, so that the inclination angle of the welding gun 4 is adjusted between 0-180 degrees.
The anti-collision component 5 is connected to the circular ring-shaped suspension 1 through a connecting rod 50 and is positioned below the welding gun 4. In this embodiment: the impact-proof component 5 is a ring body made of flexible material, as shown in fig. 4. The anti-collision component 5 is provided with an alarm component 51, and when the distance between the anti-collision component 5 and the lower obstacle is smaller than a set value, the alarm component 51 gives an alarm to avoid the welding gun 4 from touching the obstacle.
The control mechanism is a PLC capable of realizing differential motion control.
In addition, the special positioning device also comprises a hanging tool 6, and the circular ring-shaped suspension 1 is connected to the hanging tool 6. The hanger 6 can stretch out and draw back in the vertical direction and can rotate around the central line of the hanger, so that the welding gun 4 is driven to complete 360-degree welding.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (8)
1. The utility model provides a prosthetic special positioner of omega welding seam build-up welding in middle part of CRDM which characterized in that: the special positioning device comprises a circular suspension frame, a two-shaft sliding seat mechanism connected to the lower part of the circular suspension frame, a welding gun inclination angle driving part connected to the two-shaft sliding seat mechanism, and a control mechanism, wherein a welding gun is connected to the welding gun inclination angle driving part, the direction of the welding gun always points to the central line of the circular suspension frame, the special positioning device also comprises a limiting part used for limiting the inclination angle of the welding gun, the limiting part limits the horizontal upward inclination angle of the welding gun to be 0-90 degrees and limits the horizontal downward inclination angle of the welding gun to be 0-90 degrees, and the two-shaft sliding seat mechanism is positioned on one side of the welding gun,
the two-axis slide seat mechanism comprises a first adjusting slide seat, a second adjusting slide seat, a connecting plate component for connecting the first adjusting slide seat and the second adjusting slide seat, and a driving component for driving the second adjusting slide seat to move relative to the first adjusting slide seat and the welding gun inclination angle driving component to move relative to the second adjusting slide seat, wherein the first adjusting slide seat is connected on the circular ring-shaped suspension frame, the welding gun inclination angle driving component is connected on the second adjusting slide seat,
the connecting plate component comprises a first connecting plate and a second connecting plate, the first connecting plate is connected with the first adjusting slide seat, the second connecting plate is connected with the second adjusting slide seat, the first connecting plate is connected with the second connecting plate, the second connecting plate can be adjusted in the vertical direction relative to the first connecting plate, the surfaces of the first connecting plate and the second connecting plate are parallel or coplanar, and the second connecting plate can be rotationally adjusted relative to the first connecting plate on the surface of the second connecting plate,
the special positioning device further comprises an anti-collision part, and the anti-collision part is connected to the lower portion of the annular suspension.
2. The special positioning device for CRDM middle omega weld bead surfacing repair according to claim 1, is characterized in that: the driving assembly comprises a first driving part and a second driving part, the first driving part drives the second adjusting slide seat to move along the horizontal direction relative to the first adjusting slide seat, the second driving part drives the welding gun inclination angle driving part to move along the vertical direction, and the first driving part and the second driving part synchronously drive the second adjusting slide seat and the welding gun inclination angle driving part to move.
3. The special positioning device for CRDM middle omega weld bead surfacing repair according to claim 1, is characterized in that: the first adjusting slide seat comprises a first slide seat box body connected to the lower portion of the circular ring-shaped suspension frame and a first slide rail arranged in the first slide seat box body and extending along the horizontal direction, and the second adjusting slide seat is connected to the first slide rail through the connecting plate assembly.
4. The special positioning device for CRDM middle omega weld bead surfacing repair according to claim 1, is characterized in that: the second adjusting slide seat comprises a second slide seat box body and a second slide rail arranged in the second slide seat box body and extending along a second direction, and the welding gun inclination angle driving part is connected to the second slide rail through a third connecting plate.
5. The special positioning device for CRDM middle omega weld bead surfacing repair according to claim 1, is characterized in that: the special positioning device also comprises a hanger, and the annular suspension is connected to the hanger.
6. The special positioning device for CRDM middle omega weld bead surfacing repair according to claim 5, is characterized in that: the hanger can stretch out and draw back in the vertical direction and can rotate around the central line of the hanger.
7. The special positioning device for CRDM middle omega weld bead surfacing repair according to claim 1, is characterized in that: the control mechanism is a PLC capable of realizing differential motion control.
8. The special positioning device for CRDM middle omega weld bead surfacing repair according to claim 1 or 7, characterized in that: the welding gun inclination angle driving part and the driving assembly are connected with the control mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811060964.XA CN108971701B (en) | 2018-09-12 | 2018-09-12 | Special positioning device for repairing surfacing welding of omega-shaped welding seams in middle of CRDM (Crdm) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811060964.XA CN108971701B (en) | 2018-09-12 | 2018-09-12 | Special positioning device for repairing surfacing welding of omega-shaped welding seams in middle of CRDM (Crdm) |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108971701A CN108971701A (en) | 2018-12-11 |
| CN108971701B true CN108971701B (en) | 2021-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811060964.XA Active CN108971701B (en) | 2018-09-12 | 2018-09-12 | Special positioning device for repairing surfacing welding of omega-shaped welding seams in middle of CRDM (Crdm) |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110695698B (en) * | 2019-09-23 | 2021-03-16 | 苏州热工研究院有限公司 | Welding seam drilling and grinding device used in nuclear power station CRDM surfacing repair process |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5249209A (en) * | 1989-07-07 | 1993-09-28 | Westinghouse Electric Corp. | Control rod canopy seal positioning and welding system |
| JP2000111688A (en) * | 1998-10-02 | 2000-04-21 | Mitsubishi Heavy Ind Ltd | Automatic welder |
| CN108500422A (en) * | 2017-02-24 | 2018-09-07 | 国核电站运行服务技术有限公司 | A kind of seal-weld built-up welding maintenance unit |
| CN108247232B (en) * | 2018-02-11 | 2020-10-16 | 中广核核电运营有限公司 | Valve seat girth weld welding system of high-pressure valve and welding device thereof |
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