CN219426086U - Auxiliary device for welding anchor ear and drill collar - Google Patents
Auxiliary device for welding anchor ear and drill collar Download PDFInfo
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- CN219426086U CN219426086U CN202320102391.2U CN202320102391U CN219426086U CN 219426086 U CN219426086 U CN 219426086U CN 202320102391 U CN202320102391 U CN 202320102391U CN 219426086 U CN219426086 U CN 219426086U
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- drill collar
- welding
- anchor ear
- auxiliary device
- bracket
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
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Abstract
The utility model relates to the field of petroleum drilling tools and discloses an auxiliary device for welding a hoop and a drill collar, wherein a chuck clamps the head of the drill collar, and a positioning and supporting structure positions and supports the tail of the drill collar; after the anchor ear holds the drill collar tightly, a worker holds the welding tongs, spot welding is carried out at the joint of the anchor ear and the drill collar, each time a welding spot is formed, the worker steps on the pedal, each time the pedal is stepped on, the driving structure drives the drill collar to rotate a certain angle, then the worker continues spot welding to form the next welding spot until the drill collar rotates a circumference, so that the anchor ear is primarily fixed on the drill collar in a spot welding mode, and the drill collar is efficient and flexible; finally, the worker steps on the linkage pedal, the driving structure drives the drill collar to slowly rotate, and meanwhile, the worker carries out full-welding processing on the joint of the anchor ear and the drill collar, so that the anchor ear is completely fixed on the drill collar, and welding seams are uniform and consistent.
Description
Technical Field
The utility model relates to the field of petroleum drilling tools, in particular to an auxiliary device for welding a hoop and a drill collar.
Background
When the oil and gas field is drilled, the drill collar is used as a drill collar of a downhole power tool to play a role in connection and power transmission; the drill collar has the functions of providing weight for the drill bit and rigidity of the drill string, and when the drill collar is produced, in order to fix the electric wire on the drill collar body, a plurality of circular grooves are formed in advance on the axial surface of the drill collar body, and then the anchor ear is welded in the circular grooves. In the existing welding work of the anchor ear and the drill collar, two persons are required to cooperatively operate, one person is responsible for spot welding, the other person is responsible for rotating the drill collar body to change the spot welding position, and due to the fact that the weight of the drill collar is large, labor intensity for rotating the drill collar is high, and the drill collar body is difficult to rotate in place.
It can be seen that there is a need for improvements and improvements in the art.
Disclosure of Invention
In view of the defects of the prior art, the utility model aims to provide an auxiliary device for welding a hoop and a drill collar, which aims to solve the problems of high labor intensity and difficult control of rotating the drill collar.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the auxiliary device for welding the anchor ear and the drill collar comprises a chuck, a driving structure for driving the chuck to rotate, a ground rail extending along the axial direction of the drill collar, a frame arranged on the ground rail in a walking manner and a positioning and supporting structure arranged on the frame; the frame can be close to or far from the chuck, the chuck is controlled to rotate through a inching pedal and a linkage pedal, the driving structure is controlled to work through an electric cabinet, and the inching pedal and the linkage pedal are electrically connected with the electric cabinet; the chuck is used for clamping one end of the drill collar, and the positioning and bearing structure is used for supporting the other end of the drill collar.
As a further improvement of the technical scheme, the positioning and bearing structure comprises a bottom plate arranged on the frame, a lower bracket arranged on the bottom plate and two supporting roller structures symmetrically arranged on the lower bracket.
As a further improvement of the technical scheme, the riding wheel structure comprises a lower sleeve, a lower screw rod, a lower ejector rod, a lower support seat and a riding wheel, wherein the lower sleeve is fixed on a lower support, the lower support seat is arranged at the top of the lower ejector rod, the riding wheel is rotatably arranged on the lower support seat, the lower sleeve is provided with internal threads, one end of the lower screw rod is connected with the internal threads of the lower sleeve, and the other end of the lower screw rod is provided with a lower hand screwing head; the bottom end of the lower ejector rod is inserted into the lower sleeve.
As a further improvement of the technical scheme, the lower support is provided with a guide structure for guiding the lower ejector rod to move, the guide structure comprises a guide ring fixed on the lower support, the guide ring is provided with a positioning protrusion, the ejector rod is provided with a sliding groove extending along the axial direction of the ejector rod, and the positioning protrusion is clamped on the sliding groove.
As the further improvement of above-mentioned technical scheme, location bearing structure still includes the upper bracket of setting in the lower carriage top and sets up the pinch roller structure on the upper bracket, upper bracket and lower carriage enclose into circular inner chamber, the one end and the lower carriage of upper bracket are articulated, the other end of upper bracket and lower carriage passes through locking structure and connects.
As a further improvement of the technical scheme, the pinch roller structure comprises an upper sleeve, an upper screw rod, an upper ejector rod, an upper support seat and a pinch roller, wherein the upper sleeve is fixed on an upper support, the upper support seat is arranged at the top of the upper ejector rod, the pinch roller is rotatably arranged on the upper support seat, the upper sleeve is provided with internal threads, one end of the upper screw rod is connected with the internal threads of the upper sleeve, and the other end of the upper screw rod is provided with an upper hand screwing head; the bottom end of the upper ejector rod is inserted into the upper sleeve.
As a further improvement of the technical scheme, the locking structure comprises an upper U-shaped block arranged on the upper bracket and a lower U-shaped block arranged on the lower bracket, wherein a rotatable locking screw is arranged in a notch of the lower U-shaped block, and a locking nut for pressing the upper U-shaped block to the lower U-shaped block is arranged on the locking screw.
As a further improvement of the technical scheme, the frame comprises a frame body, a support plate arranged at the top of the frame body and wheels arranged at the bottom of the frame body, wherein mounting holes are formed in corners of the support plate, kidney-shaped holes corresponding to the mounting holes are formed in the bottom plate, fixing screws are arranged at each mounting hole from bottom to top, and the fixing screws are matched with the fixing nuts after penetrating through the mounting holes and the kidney-shaped holes to fix the bottom plate on the support plate.
As a further improvement of the technical scheme, a sliding rail extending along the axial direction of the drill collar is arranged on the ground, a sliding plate in sliding connection with the sliding rail is arranged on the sliding rail, and the inching pedal and the linkage pedal are arranged on the sliding plate in parallel.
The beneficial effects are that:
compared with the prior art, the auxiliary device for welding the anchor ear and the drill collar can be used for welding the anchor ear and the drill collar only by a technician, is simple to operate and greatly saves labor force.
The chuck clamps the head of the drill collar, the positioning support structure positions and supports the tail of the drill collar, the coaxiality of the head end and the tail end of the drill collar is ensured to be consistent when the drill collar rotates, and the shake of the drill collar is reduced; then installing anchor clamps in the first circular groove of the drill collar, embedding two semicircular rings of the anchor clamps into the circular groove of the drill collar to encircle the drill collar, and connecting every two installation lugs by using tightening screws to enable the anchor clamps to tightly hold the drill collar; then, a worker holds the welding tongs by hand, spot welding is carried out at the joint of the anchor ear and the drill collar, each time a welding spot is formed, the worker steps on the pedal by foot, each time the pedal is stepped on by foot, the driving structure drives the drill collar to rotate a certain angle, then the worker continues spot welding to form the next welding spot until the drill collar rotates a circle, so that the anchor ear is preliminarily fixed on the drill collar in a spot welding mode, and the welding machine is efficient and flexible; finally, the worker steps on the linkage pedal, the driving structure drives the drill collar to slowly rotate, and meanwhile, the worker carries out full-welding processing on the joint of the anchor ear and the drill collar, so that the anchor ear is completely fixed on the drill collar, and welding seams are uniform and consistent.
Drawings
Fig. 1 is a perspective view of an auxiliary device for welding a hoop and a drill collar.
Fig. 2 is a partial enlarged view of the area a in fig. 1.
Fig. 3 is a partial enlarged view of the region B in fig. 1.
Fig. 4 is a second perspective view of the auxiliary device for welding the anchor ear and the drill collar.
Fig. 5 is a right side view of the auxiliary device for welding the anchor ear and the drill collar.
Description of main reference numerals: 1-chuck, 2-driving structure, 3-ground rail, 4-frame, 40-supporting plate, 41-frame body, 42-wheel, 43-set screw, 44-set nut, 5-positioning and supporting structure, 51-bottom plate, 52-lower bracket, 53-riding wheel structure, 531-lower sleeve, 532-lower screw, 533-lower ejector pin, 534-lower bracket, 535-lower hand-screwing head, 536-riding wheel, 54-guide ring, 55-chute, 56-upper bracket, 57-locking structure, 571-upper U-shaped block, 572-lower U-shaped block, 573-locking screw, 574-locking nut, 58-pinch roller structure, 581-upper sleeve, 582-upper screw, 583-upper ejector pin, 584-upper bracket, 585-pinch roller, 586-upper hand-screwing head, 61-click pedal, 62-interlocking pedal, 7-anchor ear, 71-semi-circular ring, 72-mounting ear, 73-tightening screw, 74-drill collar, 75-circular groove, 81-slide rail, 82-slide plate.
Detailed Description
The utility model provides an auxiliary device for welding a hoop and a drill collar, which is used for making the purposes, the technical scheme and the effects of the utility model clearer and more definite, and the utility model is further described in detail below by referring to the accompanying drawings and the embodiments. It should be understood that the detailed description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the utility model.
Referring to fig. 1-5, the utility model provides an auxiliary device for welding a hoop and a drill collar, which comprises a chuck 1, a driving structure 2 for driving the chuck 1 to rotate, a ground rail 3 extending along the axial direction of the drill collar 74, a frame 4 arranged on the ground rail 3 in a walking manner and a positioning and bearing structure 5 arranged on the frame 4; the frame 4 can be close to or far from the chuck 1, the chuck 1 is controlled to rotate through a inching pedal 61 and a linkage pedal 62, the driving structure 2 is controlled to work through an electric cabinet, and the inching pedal 61 and the linkage pedal 62 are electrically connected with the electric cabinet; the chuck 1 is used for clamping one end of the drill collar 74, and the positioning and bearing structure 5 is used for supporting the other end of the drill collar 74.
As shown in fig. 2, the anchor ear 7 includes two semicircular rings 71, two ends of each semicircular ring 71 are bent outwards to form two mounting lugs 72, and the mounting lugs 72 spliced by the two semicircular rings 71 are connected by tightening screws 73. A plurality of circular grooves 75 are formed in the axial surface of the drill collar body 74, and each circular groove is welded with one hoop 7.
Compared with the prior art, only one technician is required to cooperate with the auxiliary device for welding the anchor ear 7 and the drill collar 74, so that the anchor ear 7 and the drill collar 74 can be welded, the operation is simple, and the labor force is greatly saved.
Before the anchor ear 7 is welded, the drill collar 74 is lifted to an auxiliary device for welding the anchor ear 7 and the drill collar 74, the frame 4 is pushed to a proper position according to the tail position of the drill collar 74, then the chuck 1 clamps the head of the drill collar 74, the positioning support structure 5 positions and supports the tail of the drill collar 74, the coaxiality of the head end and the tail end of the drill collar 74 is ensured to be consistent when the drill collar 74 rotates, and the shake of the drill collar 74 is reduced; then installing the anchor ear 7 in a first circular groove 75 of the drill collar 74, embedding two semicircular rings 71 of the anchor ear 7 into the circular groove 75 of the drill collar 74 to encircle the drill collar 74, and then connecting every two mounting lugs 72 by using the tightening screw 73 to enable the anchor ear 7 to tightly encircle the drill collar 74; then, a worker holds the welding tongs by hand, spot welding is carried out at the joint of the anchor ear 7 and the drill collar 74, each time a welding spot is formed, the worker steps on the pedal 61, each time the worker steps on the pedal 61, the driving structure 2 drives the drill collar 74 to rotate a certain angle, and then the worker continues spot welding to form the next welding spot until the drill collar 74 rotates a circumference, so that the anchor ear 7 is primarily fixed on the drill collar 74 in a spot welding mode; finally, the worker steps on the linkage pedal 62 by foot, the driving structure 2 drives the drill collar 74 to slowly rotate, and meanwhile, the worker carries out full-welding processing on the joint of the anchor ear 7 and the drill collar 74, so that the anchor ear 7 is completely fixed on the drill collar 74, and welding seams are uniform and coherent. The remaining circular groove 75 mounts the anchor ear 7 in the manner described above and welds the anchor ear 7 to the drill collar 74.
Specifically, the positioning and bearing structure 5 includes a bottom plate 51 disposed on the frame 4, a lower bracket 52 disposed on the bottom plate 51, and two supporting roller structures 53 symmetrically disposed on the lower bracket 52. The two riding wheel structures 53 are distributed in a splayed shape, the two riding wheel structures 53 jointly support the drill collar 74 in a follow-up mode, the gravity of the drill collar 74 is evenly shared, and the bearing reliability is improved.
Further, the supporting wheel structure 53 includes a lower sleeve 531, a lower screw 532, a lower ejector rod 533, a lower support 534 disposed at the top of the lower ejector rod 533, and a supporting wheel 536 rotatably disposed on the lower support 534, where the lower sleeve 531 is provided with internal threads, one end of the lower screw 532 is connected with the internal threads of the lower sleeve 531, and the other end is provided with a lower hand screwing head 535; the bottom end of the lower push rod 533 is inserted into the lower sleeve 531. After the lower push rod 533 is inserted into the lower sleeve 531, a worker can push the lower push rod 533 to move towards the drill collar 74 by screwing the hand screwing head 535 by hand, so that the riding wheel 536 gradually approaches the drill collar 74 and supports the axial surface of the drill collar 74.
For rotation of the lower carrier rod 533, the riding wheel 536 is caused to shift; the lower support 52 is provided with a guiding structure for guiding the lower ejector rod 533 to move, the guiding structure comprises a guiding ring 54 fixed on the lower support 52, the guiding ring 54 is provided with a positioning protrusion, the ejector rod is provided with a sliding groove 55 extending along the axial direction of the ejector rod, and the positioning protrusion is clamped on the sliding groove 55.
In order to reduce the jump of the drill collar 74 during rotation, the positioning and supporting structure 5 further comprises an upper bracket 56 arranged above the lower bracket 52 and a pinch roller structure 58 arranged on the upper bracket 56, wherein the upper bracket 56 and the lower bracket 52 enclose a circular inner cavity, one end of the upper bracket 56 is hinged with the lower bracket 52, and the other ends of the upper bracket 56 and the lower bracket 52 are connected through a locking structure 57. When the pinch roller structure 58 is used for positioning the drill collar 74, the upper support 56 is turned over to enable the upper support 56 to be combined with the lower support 52, the upper support 56 and the lower support 52 are locked and fixed through the locking structure 57, and then the top of the drill collar 74 is pressed through the pinch roller structure 58.
The pinch roller structure 58 is basically the same as the riding wheel structure 53, the pinch roller structure 58 comprises an upper sleeve 581 fixed on the upper bracket 56, an upper screw rod 582, an upper ejector rod 583, an upper support 584 arranged at the top of the upper ejector rod 583, and a pinch roller 585 rotatably arranged on the upper support 584, the upper sleeve 581 is provided with internal threads, one end of the upper screw rod 582 is connected with the internal threads of the upper sleeve 581, and the other end is provided with an upper hand screwing head 586; the bottom end of the upper push rod 583 is inserted into the upper sleeve 581. After the upper push rod 583 is inserted into the upper sleeve 581, a worker can push the upper push rod 583 to move towards the drill collar 74 by screwing the hand screwing head 586 by hand through the upper screw rod 582, so that the pressing wheel 585 gradually approaches the drill collar 74 until the pressing wheel is pressed against the axial surface of the drill collar 74. The two riding wheel structures 53 are combined with the pinch roller structure 58 to form a stable triangular structure, so that the drill collar 74 is circumferentially positioned, stable rotation of the drill collar 74 is ensured, and the stability and reliability of welding are improved.
To rotate upper lift rod 583, pinch roller 585 is caused to shift; the upper bracket 56 is also provided with a guide structure for guiding the movement of the upper push rod 583.
Further, the locking structure 57 includes an upper U-shaped block 571 disposed on the upper bracket 56, and a lower U-shaped block 572 disposed on the lower bracket 52, wherein a rotatable locking screw 573 is disposed in a recess of the lower U-shaped block 572, and a locking nut 574 for pressing the upper U-shaped block 571 against the lower U-shaped block 572 is mounted on the locking screw 573. In the unlocked state, the locking screw 573 is vertically downward in the gravity state; when the upper bracket 56 and the lower bracket 52 are to be locked, the locking screw is turned up into the recess of the upper U-shaped block 571, and the upper U-shaped block 571 is compressed against the lower U-shaped block 572 by tightening the locking nut 574.
Preferably, the frame 4 includes a frame 41, a support plate 40 disposed at the top of the frame 41, and wheels 42 disposed at the bottom of the frame 41, mounting holes are formed at corners of the support plate 40, kidney-shaped holes corresponding to the mounting holes are formed in the bottom plate 51, fixing screws 43 are mounted at each mounting hole from bottom to top, and the fixing screws 43 pass through the mounting holes and the kidney-shaped holes and then are matched with the fixing nuts 44 to fix the bottom plate 51 on the support plate 40. Through such setting, the location bearing structure 5 detachably sets up on frame 4, can also set up the cushion between bottom plate 51 and backup pad 40, adjusts the central height of location bearing structure 5 through the cushion.
In order to move the positions of the inching pedals 61 and the linkage pedals 62 correspondingly according to the positions of the circular grooves 75, the pedal control of the staff is better realized, a sliding rail 81 extending along the axial direction of the drill collar 74 is arranged on the ground, a sliding plate 82 connected with the sliding rail 81 in a sliding manner is arranged on the sliding rail 81, and the inching pedals 61 and the linkage pedals 62 are arranged on the sliding plate 82 in parallel. The worker can drive the inching pedal 61 and the interlocking pedal 62 to move by pushing the slide plate 82 lightly, the operation is convenient, and the inching pedal 61 and the interlocking pedal 62 are placed in a standardized manner.
In this embodiment, the driving structure 2 is a base, a three-jaw chuck 1 rotatably disposed on the base, and a gear motor drivingly connected to the three-jaw chuck 1. The three-jaw chuck 1 can adopt an air chuck or an electric chuck 1, so that the clamping is convenient; the electric cabinet comprises a cabinet body, a PLC controller arranged in the cabinet body and related control circuits.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
It will be understood that equivalents and modifications will occur to those skilled in the art based on the present utility model and its spirit, and all such modifications and substitutions are intended to be included within the scope of the present utility model.
Claims (10)
1. The auxiliary device for welding the anchor ear and the drill collar is characterized by comprising a chuck, a driving structure for driving the chuck to rotate, a ground rail extending along the axial direction of the drill collar, a frame arranged on the ground rail in a walking manner and a positioning and supporting structure arranged on the frame; the frame can be close to or far from the chuck, the chuck is controlled to rotate through a inching pedal and a linkage pedal, the driving structure is controlled to work through an electric cabinet, and the inching pedal and the linkage pedal are electrically connected with the electric cabinet; the chuck is used for clamping one end of the drill collar, and the positioning and bearing structure is used for supporting the other end of the drill collar.
2. The auxiliary device for welding the anchor ear and the drill collar according to claim 1, wherein the positioning and bearing structure comprises a bottom plate arranged on the frame, a lower bracket arranged on the bottom plate, and two supporting roller structures symmetrically arranged on the lower bracket.
3. The auxiliary device for welding the anchor ear and the drill collar according to claim 2, wherein the supporting wheel structure comprises a lower sleeve fixed on a lower bracket, a lower screw rod, a lower ejector rod, a lower support arranged at the top of the lower ejector rod and a supporting wheel rotatably arranged on the lower support, the lower sleeve is provided with internal threads, one end of the lower screw rod is connected with the internal threads of the lower sleeve, and the other end of the lower screw rod is provided with a lower hand screwing head;
the bottom end of the lower ejector rod is inserted into the lower sleeve.
4. The auxiliary device for welding the anchor ear and the drill collar according to claim 3, wherein the lower support is provided with a guide structure for guiding the lower ejector rod to move, the guide structure comprises a guide ring fixed on the lower support, the guide ring is provided with a positioning protrusion, the ejector rod is provided with a sliding groove extending along the axial direction of the ejector rod, and the positioning protrusion is clamped on the sliding groove.
5. The auxiliary device for welding the anchor ear and the drill collar according to claim 2, wherein the positioning and supporting structure further comprises an upper bracket arranged above the lower bracket and a pinch roller structure arranged on the upper bracket, the upper bracket and the lower bracket enclose a circular inner cavity, one end of the upper bracket is hinged with the lower bracket, and the other ends of the upper bracket and the lower bracket are connected through a locking structure.
6. The auxiliary device for welding the anchor ear and the drill collar according to claim 5, wherein the pinch roller structure comprises an upper sleeve fixed on an upper bracket, an upper screw rod, an upper ejector rod, an upper support arranged at the top of the upper ejector rod, and a pinch roller rotatably arranged on the upper support, the upper sleeve is provided with internal threads, one end of the upper screw rod is connected with the internal threads of the upper sleeve, and the other end of the upper screw rod is provided with an upper hand screwing head;
the bottom end of the upper ejector rod is inserted into the upper sleeve.
7. The auxiliary device for welding the anchor ear and the drill collar according to claim 5, wherein the locking structure comprises an upper U-shaped block arranged on the upper bracket and a lower U-shaped block arranged on the lower bracket, a rotatable locking screw is arranged in a notch of the lower U-shaped block, and a locking nut for pressing the upper U-shaped block to the lower U-shaped block is arranged on the locking screw.
8. The auxiliary device for welding the anchor ear and the drill collar according to claim 2, wherein the frame comprises a frame body, a supporting plate arranged at the top of the frame body and wheels arranged at the bottom of the frame body.
9. The auxiliary device for welding the anchor ear and the drill collar according to claim 8, wherein the corners of the supporting plate are provided with mounting holes, the bottom plate is provided with kidney-shaped holes corresponding to the mounting holes, each mounting hole is provided with a fixing screw from bottom to top, and the fixing screw passes through the mounting hole and the kidney-shaped holes and then is matched with the fixing nut to fix the bottom plate on the supporting plate.
10. The auxiliary device for welding the anchor ear and the drill collar according to claim 1, wherein a sliding rail extending along the axial direction of the drill collar is arranged on the ground, a sliding plate connected with the sliding rail in a sliding manner is arranged on the sliding rail, and the inching pedal and the linkage pedal are arranged on the sliding plate in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320102391.2U CN219426086U (en) | 2023-02-02 | 2023-02-02 | Auxiliary device for welding anchor ear and drill collar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320102391.2U CN219426086U (en) | 2023-02-02 | 2023-02-02 | Auxiliary device for welding anchor ear and drill collar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219426086U true CN219426086U (en) | 2023-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320102391.2U Active CN219426086U (en) | 2023-02-02 | 2023-02-02 | Auxiliary device for welding anchor ear and drill collar |
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| CN (1) | CN219426086U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117548887A (en) * | 2024-01-11 | 2024-02-13 | 潍坊昌大建设集团有限公司 | Steel bar welding positioning device |
-
2023
- 2023-02-02 CN CN202320102391.2U patent/CN219426086U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117548887A (en) * | 2024-01-11 | 2024-02-13 | 潍坊昌大建设集团有限公司 | Steel bar welding positioning device |
| CN117548887B (en) * | 2024-01-11 | 2024-04-02 | 潍坊昌大建设集团有限公司 | Steel bar welding positioning device |
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