CN111872521A - Welding device for welding large pipe elbow - Google Patents
Welding device for welding large pipe elbow Download PDFInfo
- Publication number
- CN111872521A CN111872521A CN201910397479.XA CN201910397479A CN111872521A CN 111872521 A CN111872521 A CN 111872521A CN 201910397479 A CN201910397479 A CN 201910397479A CN 111872521 A CN111872521 A CN 111872521A
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- welding
- elbow
- driving chain
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- 238000003466 welding Methods 0.000 title claims abstract description 170
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 27
- 239000000843 powder Substances 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 5
- 210000001503 joint Anatomy 0.000 claims description 2
- 230000004907 flux Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
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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
- B23K9/18—Submerged-arc 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
- B23K9/32—Accessories
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention relates to a welding device for welding a large pipe elbow, which comprises a liftable bracket, a welding arm connected with the bracket, and a welding head arranged at the end part of the welding arm, and further comprises an elbow weldment clamping device, wherein the elbow weldment clamping device comprises: the driving chain wheel is driven by the driving chain to rotate, and correspondingly, a driven chain wheel is arranged on the inner side of the driving chain; the first hydraulic oil cylinder is connected with the driving chain and can drive the driving chain to move up and down; the device comprises a first linear slideway and a second linear slideway, wherein the two linear slideways are arranged in a fan shape with a driving chain wheel, the end parts of the two linear slideways are hinged with a wheel shaft of the driving chain wheel, and the two linear slideways are respectively provided with a clamping piece which is used for clamping an elbow welding piece. The elbow weldment is convenient to fix, and the rotation speed of the elbow weldment is stable.
Description
Technical Field
The invention relates to a welding device for welding a large pipe elbow.
Background
The most relevant prior art of the invention is a patent of an invention named as an automatic butt welding elbow welding machine (patent number: 201810508309.X), a welding head is arranged on a bracket capable of moving up and down, left and right, an elbow welding piece is fixed on a rotating disc and rotates along with the rotating disc, namely the elbow welding piece rotates relative to the welding head, so that the elbow is welded. The fixed knot that this patent exists lies in, and the fixed knot of elbow weldment and rolling disc constructs complicacy, and the operation is inconvenient, and the elbow weldment is not steady enough along with the rolling disc pivoted speed to influence welded quality.
Disclosure of Invention
The invention aims to provide a welding device for welding a large pipe elbow, which is convenient for fixing an elbow weldment and stable in rotation speed of the elbow weldment.
The technical scheme for realizing the purpose of the invention is as follows:
the utility model provides a be used for large-scale pipe fitting elbow welded welding set, includes the support of liftable, and the leg joint has the welding arm, and the tip of welding arm is equipped with the welding head, its characterized in that still includes elbow weldment clamping device, elbow weldment clamping device includes:
the driving chain wheel is driven by the driving chain to rotate, and correspondingly, a driven chain wheel is arranged on the inner side of the driving chain;
the first hydraulic oil cylinder is connected with the driving chain and can drive the driving chain to move up and down;
the device comprises a first linear slideway and a second linear slideway, wherein the two linear slideways are arranged in a fan shape with a driving chain wheel, the end parts of the two linear slideways are hinged with a wheel shaft of the driving chain wheel, and the two linear slideways are respectively provided with a clamping piece which is used for clamping an elbow welding piece.
Furthermore, a second hydraulic cylinder and a third hydraulic cylinder are arranged and used for adjusting a fan-shaped included angle between the two linear sliding ways, and the second hydraulic cylinder and the third hydraulic cylinder are located on the inner sides of the two linear sliding ways.
Furthermore, a center rod is arranged, the end part of the center rod is connected with a wheel shaft of the driving chain wheel, and a second hydraulic cylinder, a third hydraulic cylinder and two linear slideways are symmetrically distributed relative to the center rod; the end parts of a second hydraulic cylinder and a third hydraulic cylinder are hinged with a wheel shaft of the driving chain wheel, the end part of a cylinder rod of the second hydraulic cylinder is hinged with a first pull rod and a second pull rod, and the first pull rod and the second pull rod are respectively hinged with the central rod and the first linear slideway; the end part of a rod of the third hydraulic oil cylinder is hinged with a third pull rod and a fourth pull rod, and the third pull rod and the fourth pull rod are respectively hinged with the central rod and the second linear slideway.
Furthermore, a screw rod is arranged on the linear slideway, the clamping piece is arranged on the screw rod and can be driven by the screw rod to do linear motion; and a driving motor for driving the lead screw to move is correspondingly arranged on the linear slideway.
Furthermore, a cylinder rod of the first hydraulic oil cylinder is connected with the left side of the sliding frame, the sliding frame is installed on the guide support, the sliding frame can slide up and down along the guide support under the driving of the first hydraulic oil cylinder, and the right side of the sliding frame is connected with the driving chain.
Further, the first hydraulic oil cylinder is provided with a back pressure control device.
Furthermore, the whole welding arm is arc-shaped, the welding arm is composed of a plurality of welding arms, and the welding arms are hinged with each other; and a fourth hydraulic oil cylinder is connected at the hinged part between the two sections of welding arms and is used for adjusting the bending radian of the welding arms.
Furthermore, a welding seam powder supporting pad is arranged at the welding seam corresponding to the elbow weldment and consists of a plurality of sections of metal powder grooves, the metal powder grooves are hinged with each other, and the welding seam powder supporting pad is arranged on the back of the welding surface of the welding seam; the welding seam is an outer circular arc welding seam or an inner circular arc welding seam of the elbow.
Furthermore, the whole welding arm is in a downward sunken arc shape; the driving chain wheel is positioned above the driven chain wheel, and after the elbow welding part is clamped, the inner circular arc welding line of the elbow corresponds to the position of the welding machine head.
Furthermore, the whole welding arm is in an upward-bulged circular arc shape; the driving chain wheel is positioned below the driven chain wheel, and after the elbow welding part is clamped, the outer circular arc welding line of the elbow corresponds to the position of the welding machine head.
The invention has the following beneficial effects:
the elbow weldment clamping device comprises a driving chain wheel, wherein the driving chain wheel is driven by a driving chain to rotate, and correspondingly, a driven chain wheel is arranged on the inner side of the driving chain; the first hydraulic oil cylinder is connected with the driving chain and can drive the driving chain to move up and down; the two linear slideways are arranged in a fan shape with the driving chain wheel, the end parts of the two linear slideways are hinged with the wheel shaft of the driving chain wheel, and the two linear slideways are respectively provided with a clamping piece which is used for clamping an elbow welding piece. According to the invention, the driving chain wheel is driven to rotate by the first hydraulic oil cylinder, and the vertical linear motion is converted into the rotary motion, so that the elbow weldment is driven to rotate, the stable rotation speed of the elbow weldment is ensured, namely the consistency of the welding speed is ensured, and the welding process has no movement and no intermittence, so that the welding seam is smooth and uniform, and the welding quality is improved; the elbow weldment is fixed on the first linear slideway and the second linear slideway which are sectors through the clamping and fixing piece, so that the elbow weldment is convenient to fix.
The hydraulic control device is provided with a second hydraulic cylinder and a third hydraulic cylinder, and is used for adjusting a fan-shaped included angle between two linear slide ways, wherein the second hydraulic cylinder and the third hydraulic cylinder are positioned at the inner sides of the two linear slide ways; the second hydraulic cylinder, the third hydraulic cylinder and the two linear slideways are symmetrically distributed relative to the center rod; the end parts of a second hydraulic cylinder and a third hydraulic cylinder are hinged with a wheel shaft of the driving chain wheel, the end part of a cylinder rod of the second hydraulic cylinder is hinged with a first pull rod and a second pull rod, and the first pull rod and the second pull rod are respectively hinged with the central rod and the first linear slideway; the end part of a rod of the third hydraulic oil cylinder is hinged with a third pull rod and a fourth pull rod which are respectively hinged with the central rod and the second linear slideway; the linear slideway is provided with a screw rod, the clamping piece is arranged on the screw rod and can be driven by the screw rod to do linear motion; and a driving motor for driving the lead screw to move is correspondingly arranged on the linear slideway.
According to the invention, the included angle of the sectors of the two linear slide ways can be effectively adjusted through the second hydraulic oil cylinder and the third hydraulic oil cylinder, and the clamping piece can horizontally move under the driving of the screw rod, so that the fixing device is suitable for fixing elbow weldments of different specifications, is more convenient for fixing the elbow weldments, and has strong fixing reliability.
According to the invention, a cylinder rod of a first hydraulic oil cylinder is connected with the left side of a sliding frame, the sliding frame is arranged on a guide support, the sliding frame can slide up and down along the guide support under the drive of the first hydraulic oil cylinder, and the right side of the sliding frame is connected with a drive chain; the first hydraulic oil cylinder is provided with a back pressure control device. The invention ensures that the cylinder rod can not fall back automatically due to dead weight eccentricity when extending or falling back through the backpressure control device, the rotating speed can not be controlled, and the consistency of the welding speed is further ensured.
The welding arm is integrally arc-shaped and consists of a plurality of welding arms which are hinged with each other; and a fourth hydraulic oil cylinder is connected at the hinged part between the two sections of welding arms and is used for adjusting the bending radian of the welding arms. The bending radian of the welding arm is adjustable, and the welding operation is more convenient.
The welding seam explosive-supporting pad is arranged at the welding seam corresponding to an elbow weldment and consists of a plurality of sections of metal explosive grooves which are hinged with each other, and the welding seam explosive-supporting pad is arranged on the back surface of the welding seam welding surface; the welding seam is an outer circular arc welding seam or an inner circular arc welding seam of the elbow. Welding current can be increased after the welding seam supports the powder, the depth of a welding molten pool is deepened, a manual backing welding process is omitted after the welding seam uses the powder, and the powder supporting pad can be repeatedly used. The flux-supporting pad is suitable for supporting the flux of various elbows during welding, the flux used by the flux-supporting pad is filled in the flux-supporting pad by using the flux used by submerged arc welding, and the isolation of the bottom of a welding line from air is realized, so that no bubble is generated during welding, and the welding quality is ensured.
Drawings
FIG. 1 is a schematic structural diagram according to a first embodiment of the present invention;
FIG. 2 is a schematic structural view of a first hydraulic cylinder and a drive sprocket part according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of a second embodiment of the present invention.
Detailed Description
The first embodiment is as follows:
welding device for welding inner arc (inner R) welding seam of elbow
As shown in figure 1, the lifting support comprises a rack 3, a lifting frame 5 and a transverse arm 4, wherein the transverse arm is mounted on the lifting frame 5, the lifting frame can move up and down relative to the rack 3, the transverse arm 4 is connected with a welding arm 9, and the end part of the welding arm is provided with a welding machine head 10. The rotating disk 2 is fixed on the base 1 and can drive the frame 3 to rotate. The lifting motor 6 can drive the lifting frame 5 to move up and down through the lifting chain 7, and further drive the transverse arm 4 to move up and down. The transverse arm 4 is provided with a wire reel 8, a welding wire 27 is arranged on the wire reel 8, and the welding wire 27 is connected with the welding head 10.
As shown in fig. 1 and 2, the elbow weldment clamping device further comprises: a driving sprocket 20, the driving sprocket 20 is driven by a driving chain 23 to rotate, and correspondingly, a driven sprocket 30 is arranged on the inner side of the driving chain; the first hydraulic oil cylinder 21 is connected with the driving chain 23 and can drive the driving chain 23 to move up and down. During the connection, the cylinder rod of the first hydraulic oil cylinder 21 is connected with the left side of the sliding frame 25, the sliding frame 25 is installed on the guide support column 22, the sliding frame 25 is provided with a sliding wheel 24, the sliding frame 25 can slide up and down along the guide support column 22 under the driving of the first hydraulic oil cylinder 21, and the right side of the sliding frame 25 is connected with the driving chain 23. The first hydraulic cylinder 21 is provided with a back pressure control device. The device comprises a first linear slideway 17 and a second linear slideway 28, wherein the two linear slideways are arranged in a fan shape with a driving chain wheel 20, the end parts of the two linear slideways are hinged with a wheel shaft of the driving chain wheel, clamping pieces 14 are arranged on the two linear slideways, and the clamping pieces 14 are used for clamping elbow welding pieces. And the second hydraulic cylinder 32 and the third hydraulic cylinder 16 are arranged and used for adjusting a fan-shaped included angle between the two linear slide ways, and the second hydraulic cylinder 32 and the third hydraulic cylinder 16 are positioned on the inner sides of the two linear slide ways. The second hydraulic cylinder 32, the third hydraulic cylinder 16 and the two linear slideways are symmetrically distributed relative to the central rod 33; the end parts of the second hydraulic cylinder 32 and the third hydraulic cylinder 16 are hinged with a wheel shaft of the driving chain wheel 20, the end part of a cylinder rod of the second hydraulic cylinder 32 is hinged with a first pull rod 34 and a second pull rod 35, and the first pull rod 34 and the second pull rod 35 are respectively hinged with a central rod 33 and a first linear slideway 17; the end parts of the third hydraulic cylinder 16 are hinged with a third pull rod 36 and a fourth pull rod 37, and the third pull rod 36 and the fourth pull rod 37 are respectively hinged with the central rod 33 and the second linear slideway 28. A screw 13 is arranged on the linear slideway, a clamping piece 14 is arranged on the screw 13, and the clamping piece 14 can be driven by the screw 13 to do linear motion; the linear slideway is correspondingly provided with a driving motor 15 for driving the screw rod 13 to move.
As shown in fig. 1, the welding arm 9 is arc-shaped as a whole, the welding arm 9 is composed of a plurality of welding arms, and the welding arms are hinged with each other; and a fourth hydraulic oil cylinder is connected at the hinged part between the two sections of welding arms and is used for adjusting the bending radian of the welding arms. A welding seam powder supporting pad 19 is arranged at the welding seam corresponding to the elbow weldment, the welding seam powder supporting pad 19 consists of a plurality of sections of metal powder grooves, the plurality of sections of metal powder grooves are hinged with each other, and the welding seam powder supporting pad is arranged on the back of the welding face of the welding seam; the welding seam is an outer circular arc welding seam or an inner circular arc welding seam of the elbow.
In this embodiment, the welding device is used for welding an inner arc (inner R) weld of an elbow, and the welding arm 9 is in a shape of a circular arc which is concave downwards as a whole; the drive sprocket 20 is located above the driven sprocket. In specific implementation, the existing structure, namely the bracket 31 in fig. 1, can also be directly used for the bracket and the welding arm structure.
When the elbow welding part is in work, the inner arc welding seam of the elbow welding part corresponds to the position of the welding machine head 10 after the elbow welding part 26 is clamped and fixed through the adjusting bracket. When the elbow welding piece 26 is clamped, the sector included angles of the two linear slide ways can be effectively adjusted through the second hydraulic cylinder 32 and the third hydraulic cylinder 16, and the clamping piece 14 can horizontally move under the driving of the lead screw 13, so that the fixing device is suitable for fixing elbow welding pieces of different specifications, the fixing of the elbow welding pieces is more convenient, and the fixing reliability is strong. The first hydraulic cylinder 21 drives the driving sprocket 20 to rotate, that is, the vertical linear motion is converted into a rotational motion, so as to drive the elbow weldment 26 to rotate, that is, the elbow weldment 26 rotates relative to the welding head 10, thereby performing the welding operation. The invention is driven by the first hydraulic oil cylinder 21, and the oil cylinder is provided with the back pressure device, so that the stable rotation speed of the elbow weldment can be ensured, namely the consistency of the welding speed is ensured, no movement and no intermittence exist during welding, the welding line is smooth and uniform, and the welding quality is improved.
Example two:
welding device for welding outer arc (outer R) welding seam of elbow
As shown in fig. 3, the second embodiment is different from the first embodiment only in that the welding arm is in an upward-bulging circular arc shape as a whole; the driving chain wheel is positioned below the driven chain wheel, and after the elbow welding part is clamped, the outer circular arc welding line of the elbow corresponds to the position of the welding machine head.
Claims (10)
1. The utility model provides a be used for large-scale pipe fitting elbow welded welding set, includes the support of liftable, and the leg joint has the welding arm, and the tip of welding arm is equipped with the welding head, its characterized in that still includes elbow weldment clamping device, elbow weldment clamping device includes:
the driving chain wheel is driven by the driving chain to rotate, and correspondingly, a driven chain wheel is arranged on the inner side of the driving chain;
the first hydraulic oil cylinder is connected with the driving chain and can drive the driving chain to move up and down;
the device comprises a first linear slideway and a second linear slideway, wherein the two linear slideways are arranged in a fan shape with a driving chain wheel, the end parts of the two linear slideways are hinged with a wheel shaft of the driving chain wheel, and the two linear slideways are respectively provided with a clamping piece which is used for clamping an elbow welding piece.
2. The welding device for welding the large pipe elbow according to claim 1, wherein: the second hydraulic cylinder and the third hydraulic cylinder are arranged and used for adjusting a fan-shaped included angle between the two linear slide ways, and the second hydraulic cylinder and the third hydraulic cylinder are located on the inner sides of the two linear slide ways.
3. The welding device for welding the large pipe elbow according to claim 2, wherein: the second hydraulic cylinder, the third hydraulic cylinder and the two linear slideways are symmetrically distributed relative to the center rod; the end parts of a second hydraulic cylinder and a third hydraulic cylinder are hinged with a wheel shaft of the driving chain wheel, the end part of a cylinder rod of the second hydraulic cylinder is hinged with a first pull rod and a second pull rod, and the first pull rod and the second pull rod are respectively hinged with the central rod and the first linear slideway; the end part of a rod of the third hydraulic oil cylinder is hinged with a third pull rod and a fourth pull rod, and the third pull rod and the fourth pull rod are respectively hinged with the central rod and the second linear slideway.
4. The welding device for welding the large pipe elbow according to claim 1, wherein: the linear slideway is provided with a screw rod, the clamping piece is arranged on the screw rod and can be driven by the screw rod to do linear motion; and a driving motor for driving the lead screw to move is correspondingly arranged on the linear slideway.
5. The welding device for welding the large pipe elbow according to claim 1, wherein: the cylinder rod of the first hydraulic oil cylinder is connected with the left side of the sliding frame, the sliding frame is installed on the guide support, the sliding frame can slide up and down along the guide support under the driving of the first hydraulic oil cylinder, and the right side of the sliding frame is connected with the driving chain.
6. The welding device for welding the large pipe elbow according to claim 1, wherein: the first hydraulic oil cylinder is provided with a back pressure control device.
7. The welding device for welding the large pipe elbow according to claim 1, wherein: the welding arm is integrally arc-shaped and consists of a plurality of welding arms which are hinged with each other; and a fourth hydraulic oil cylinder is connected at the hinged part between the two sections of welding arms and is used for adjusting the bending radian of the welding arms.
8. The welding device for welding the large pipe elbow according to claim 1, wherein: a welding seam powder supporting pad is arranged at the welding seam corresponding to the elbow weldment and consists of a plurality of sections of metal powder grooves which are hinged with each other, and the welding seam powder supporting pad is arranged on the back surface of the welding seam welding surface; the welding seam is an outer circular arc welding seam or an inner circular arc welding seam of the elbow.
9. The welding device for large pipe elbow welding according to any one of claims 1 to 8, characterized in that: the whole welding arm is in a downward sunken arc shape; the driving chain wheel is positioned above the driven chain wheel, and after the elbow welding part is clamped, the inner circular arc welding line of the elbow corresponds to the position of the welding machine head.
10. The welding device for large pipe elbow welding according to any one of claims 1 to 8, characterized in that: the whole welding arm is in an upward-raised arc shape; the driving chain wheel is positioned below the driven chain wheel, and after the elbow welding part is clamped, the outer circular arc welding line of the elbow corresponds to the position of the welding machine head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910397479.XA CN111872521A (en) | 2019-05-02 | 2019-05-02 | Welding device for welding large pipe elbow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910397479.XA CN111872521A (en) | 2019-05-02 | 2019-05-02 | Welding device for welding large pipe elbow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111872521A true CN111872521A (en) | 2020-11-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910397479.XA Pending CN111872521A (en) | 2019-05-02 | 2019-05-02 | Welding device for welding large pipe elbow |
Country Status (1)
| Country | Link |
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| CN (1) | CN111872521A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112917055A (en) * | 2021-01-27 | 2021-06-08 | 中国核动力研究设计院 | Automatic pipeline welding device with adjustable mechanical arm and method |
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| KR20140052149A (en) * | 2012-10-19 | 2014-05-07 | (주)에이원엔지니어링 | Supporting apparatus for welding machine |
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| CN108406217A (en) * | 2018-05-24 | 2018-08-17 | 温州市明洋管件制造有限公司 | Butt-welding elbow automatic welding machine |
| CN210060074U (en) * | 2019-05-02 | 2020-02-14 | 杨喜春 | Welding device for welding large pipe elbow |
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2019
- 2019-05-02 CN CN201910397479.XA patent/CN111872521A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101045273A (en) * | 2007-04-30 | 2007-10-03 | 李文秀 | Equipment for automatically welding longitudinal concave seam of large elbow |
| CN201086181Y (en) * | 2007-10-30 | 2008-07-16 | 杨喜春 | Tire rotating device for welding large-scale pipe fitting connector bend |
| CN201664811U (en) * | 2008-08-14 | 2010-12-08 | 中机生产力促进中心 | Automatic shift welding machine for large pipe fittings |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112917055A (en) * | 2021-01-27 | 2021-06-08 | 中国核动力研究设计院 | Automatic pipeline welding device with adjustable mechanical arm and method |
| CN112917055B (en) * | 2021-01-27 | 2021-12-07 | 中国核动力研究设计院 | Automatic pipeline welding device with adjustable mechanical arm and method |
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