CN208880051U - A kind of steel-pipe welding butting tooling - Google Patents
A kind of steel-pipe welding butting tooling Download PDFInfo
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- CN208880051U CN208880051U CN201821778592.XU CN201821778592U CN208880051U CN 208880051 U CN208880051 U CN 208880051U CN 201821778592 U CN201821778592 U CN 201821778592U CN 208880051 U CN208880051 U CN 208880051U
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Abstract
The utility model discloses a kind of steel-pipe welding butting toolings, including two brackets disposed in parallel, the top of two brackets is fixedly installed with the same station, station top side is fixedly installed with the first fixture, the side of first fixture is equipped with the second fixture being movably arranged on station top side, second fixture is equipped with the telescope motor being fixedly mounted on station top side far from the side of the first fixture, telescopic rod is fixedly installed on the output shaft of telescope motor, one end of telescopic rod is fixedly mounted on side of second fixture far from the first fixture, the top side of first fixture and the second fixture offers holding tank.The utility model structure is simple, fixture can clamp longer steel pipe, and the crank that swings back and forth, so that two movable plates, two kellies and top plate jointly grip the steel pipe in holding tank, multiple spot is fixed stronger not to be shaken so that clamping, conducive to welding, and steel pipe meets use demand convenient for removing.
Description
Technical field
The utility model relates to steel pipe processing technique field more particularly to a kind of steel-pipe welding butting toolings.
Background technique
Welded still pipe refers to be deformed into the shapes such as round, rectangular with steel band or steel plate bending after be welded into again, surface has
The steel pipe of seam, the blank that welded still pipe uses is steel plate or strip.Steel pipe is often needed in use by two or more
Steel-pipe welding together, for butt welding needs, needs to be docked by after two sections of steel pipe clampings, butt seam is welded,
Since steel pipe is cylindrical, when clamping of steel pipe, is easy to appear situations such as clamping loosens, clipping operation is cumbersome, is easy to influence welding
A kind of effect, it is therefore desirable to the steel-pipe welding butting tooling of firm grip, convenient disassembly.
The patent of Publication No. CN207771204U discloses a kind of steel-pipe welding butting tooling, including be oppositely arranged two
A hold-down mechanism and the liftable wheel platform being mounted between the hold-down mechanism, hold-down mechanism can be horizontal including one
The rear side end of the compression plate of linear movement, compression plate is connect with drive rod, and drive rod is connect with cylinder piston rod, the utility model
It can fast implement the positioning docking of two sections of steel pipes, so that bonding machine be facilitated to carry out weld job, but the butting tooling is from two
One end that a steel pipe is located remotely from each other carries out extruding fixation, is only applicable to shorter steel pipe, can not effectively fix when steel pipe is longer, and
It is inconvenient that steel pipe on fixture is dismantled, therefore cannot satisfy the use demand.
Utility model content
(1) technical problems to be solved
In order to overcome the shortage of prior art, it is proposed that a kind of steel-pipe welding butting tooling presss from both sides steel pipe to solve fixture
When holding fixed, steel pipe clamping is insecure, steel pipe is difficult to convenient the problem of removing after welding, realizes that fixture presss from both sides steel pipe multiple spot
Fixation is held, is not shaken securely, and steel pipe is convenient removes, it is easy to use.
(2) technical solution
The utility model is achieved through the following technical solutions: the utility model proposes a kind of steel-pipe welding butting tooling,
Including two brackets disposed in parallel, the top of described two brackets is fixedly installed with the same station, and station top side is solid
Dingan County is equipped with the first fixture, and the side of the first fixture is equipped with the second fixture being movably arranged on station top side, the second fixture
Side far from the first fixture is equipped with the telescope motor being fixedly mounted on station top side, fixes on the output shaft of telescope motor
Telescopic rod is installed, one end of telescopic rod is fixedly mounted on side of second fixture far from the first fixture, first fixture
Holding tank is offered with the top side of the second fixture, loose slot, two activities are offered on the bottom side inner wall of two holding tanks
Motion bar is movably installed in slot, and the top of two motion bars all extends in holding tank and is fixedly installed with top respectively
Plate offers placing groove on the two sides inner wall of holding tank, movable plate is movably installed in placing groove, two movable plates mutually lean on
Close side all extends in holding tank, and top plate top side is fixedly installed with two kellies, and two movable plate bottom sides offer card
Slot, kelly are to be obliquely installed with card slot, and the top of two kellies extends respectively in two card slots, the side of the holding tank
Rotation hole is offered on inner wall, rotation axis is rotatably equipped in rotation hole, and one end of rotation axis extends in holding tank and fixed
Rotating bar is installed, the bottom side rotational installation of rotating bar is there are two l-shaped rod, and two l-shaped rods are symmetrical arranged based on rotation axis, activity
The equal equidistant intervals in the two sides of bar are fixedly installed with multiple wedge blocks, the bottom end of two l-shaped rods respectively with the two sides phase of wedge block
Contact, two l-shaped rod sides close to each other are fixedly installed with same first spring.
Further, the push-and-pull hole below rotation hole is offered on the side inner wall of the holding tank, is pushed and pulled in hole
It is movably installed with push-pull rod, and the both ends of push-pull rod all extend to outside push-and-pull hole, two l-shaped rod sides close to each other rotate
Connecting rod is installed, two connecting rods one end close to each other is rotatably installed in respectively on the two sides of push-pull rod.
Further, the push-pull rod is fixedly installed with push and pull bar far from one end of motion bar, is socketed on push and pull bar
There is rubber protecting jacket.
Further, movable block is movably installed in the loose slot, the bottom end of motion bar is fixedly mounted on movable block
On top side.
Further, the movable block bottom side is fixedly installed with the top of second spring, the fixed peace in the bottom end of second spring
On the bottom side inner wall of loose slot, sliding groove is offered on the two sides inner wall of loose slot, the two sides of movable block are slided respectively
It is mounted in two sliding grooves.
Further, the top side of the station offers shifting chute, and the bottom side of the second fixture is slidably mounted on shifting chute
It is interior.
Further, the bottom end of two l-shaped rods is fixedly installed with fixture block, two fixture blocks side difference close to each other respectively
It is in contact with the two sides of wedge block.
Further, limiting slot, the fixed peace in two movable plate bottom sides are offered on the bottom side inner wall of two placing grooves
Equipped with limited block, the bottom side of two limited blocks is slidably mounted on respectively in two limiting slots.
Further, one end of the rotation axis is fixedly installed with crank, is socketed with rubber protecting jacket on crank.
(3) beneficial effect
The utility model compared with the existing technology, has the advantages that
In the utility model, pass through bracket, station, the first fixture, the second fixture, telescope motor, telescopic rod, holding tank
Be used cooperatively, start telescope motor, push the second fixture mobile to the direction close to the first fixture, thus by two steel pipes pair
It connects, to weld, passes through loose slot, motion bar, movable block, sliding groove, top plate, kelly, movable plate, rotation axis, rotating bar, L
Type bar, fixture block, wedge block, shifting chute, placing groove, card slot, rotation hole are used cooperatively, and swing back and forth crank, drive rotation axis
Rotation, rotation axis drive rotating bar to swing back and forth in holding tank, and rotating bar, which is swung, drives two fixture blocks to move one on the other, to
The fixture block of upper movement pushes wedge block, and then motion bar is pushed to move up, and the fixture block moved down is then along the one of wedge block
Slideslip drives motion bar to move up, activity up to being blocked by next wedge block to realize rotating bar and swing back and forth
Bar, which moves up, drives top plate mobile, and top plate drives two kellies to move up, to drive two movable plates towards mutually leaning on
Close direction is mobile, and two movable plates, two kellies and top plate jointly grip the steel pipe in holding tank, and more
Point is fixed so that clamping is stronger does not shake, be conducive to welding, is used cooperatively, is pushed by connecting rod, push-pull rod, push-and-pull hole
Push and pull bar drives push-pull rod to, push-pull rod promotion two connecting rods movements mobile close to the direction of motion bar, two connecting rods
Two fixture blocks are pushed to be located remotely from each other, under second spring rebound effect, motion bar moves down return, so that steel pipe can
Easily removed from fixture, it is easy to use；
The utility model structure is simple, and fixture can clamp longer steel pipe, and the crank that swings back and forth, so that two movements
Plate, two kellies and top plate jointly grip the steel pipe in holding tank,
Multiple spot fix so that clamp it is stronger do not shake, be conducive to welding, and steel pipe is convenient for removing, meet using needing
It asks.
Detailed description of the invention
Fig. 1 be the utility model proposes a kind of steel-pipe welding butting tooling structural schematic diagram；
Fig. 2 be the utility model proposes a kind of steel-pipe welding butting tooling fixture positive structure diagram；
Fig. 3 be the utility model proposes a kind of steel-pipe welding butting tooling fixture side structure schematic view；
Fig. 4 be the utility model proposes a kind of steel-pipe welding butting tooling Fig. 2 in part A structural schematic diagram.
In figure: 1 bracket；2 stations；3 first fixtures；4 second fixtures；5 telescope motors；6 telescopic rods；7 holding tanks；8 is living
Dynamic slot；9 motion bars；10 movable blocks；11 sliding grooves；12 top plates；13 kellies；14 movable plates；15 rotation axis；16 rotating bars；17 L
Type bar；18 fixture blocks；19 wedge blocks；20 connecting rods；21 push-pull rods；22 shifting chutes；23 placing grooves；24 card slots；25 rotation holes；26 push away
Pulling eye.
Specific embodiment
In the technical program:
3 first fixtures, 4 second fixtures, 7 holding tanks, 8 loose slots, 9 motion bars, 10 movable blocks, 12 top plates, 13 kellies, 14
Movable plate, 15 rotation axis, 16 rotating bars, 17L type bar, 18 fixture blocks, 19 wedge blocks, 20 connecting rods, 21 push-pull rods, 22 shifting chutes,
23 placing grooves, 24 card slots, 25 rotation holes, 26 push-and-pull holes.Contain the innovative component of essence for the utility model.
1 bracket, 2 stations, 5 telescope motors, 6 telescopic rods, 11 sliding grooves are to realize that technical solutions of the utility model must not
The connectivity component that can lack.
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
A kind of steel-pipe welding butting tooling as shown in Figs 1-4, including two brackets 1 disposed in parallel, two brackets 1
Top is fixedly installed with the same station 2, and 2 top side of station is fixedly installed with the first fixture 3, and the side of the first fixture 3 is set
There is the second fixture 4 being movably arranged on 2 top side of station, the second fixture 4 is equipped with far from the side of the first fixture 3 and is fixedly mounted
Telescope motor 5 on 2 top side of station is fixedly installed with telescopic rod 6, one end of telescopic rod 6 on the output shaft of telescope motor 5
It is fixedly mounted on side of second fixture 4 far from the first fixture 3, the top side of the first fixture 3 and the second fixture 4 offers folder
Slot 7 is held, loose slot 8 is offered on the bottom side inner wall of two holding tanks 7, is movably installed with motion bar in two loose slots 8
9, and the top of two motion bars 9 all extends in holding tank 7 and is fixedly installed with respectively top plate 12, in the two sides of holding tank 7
Placing groove 23 is offered on wall, and movable plate 14, two movable plates 14 side close to each other are movably installed in placing groove 23
It all extends in holding tank 7, there are two kellies 13 for the fixed installation of 12 top side of top plate, and two 14 bottom sides of movable plate offer card slot
24, kelly 13 is to be obliquely installed with card slot 24, and the top of two kellies 13 extends respectively in two card slots 24, holding tank 7
Side inner wall on offer rotation hole 25, rotation axis 15 is rotatably equipped in rotation hole 25, one end of rotation axis 15 extends to
In holding tank 7 and it is fixedly installed with rotating bar 16, there are two l-shaped rod 17, two l-shaped rods 17 for the bottom side rotational installation of rotating bar 16
It is symmetrical arranged based on rotation axis 15, the equal equidistant intervals in the two sides of motion bar 9 are fixedly installed with multiple wedge blocks 19, two L-types
The bottom end of bar 17 is in contact with the two sides of wedge block 19 respectively, and two sides close to each other of l-shaped rod 17 are fixedly installed with same
Two steel pipes to be welded are separately fixed on two fixtures by a first spring, start telescope motor 5, push the second fixture 4
To close to the movement of the direction of the first fixture 3, so that two steel pipes be docked, to weld, in fixed steel pipe, steel pipe is placed
In holding tank 7, swing back and forth crank, and rotation axis 15 is driven to rotate in rotation hole 25, and rotation axis 15 drives rotating bar 16 to exist
It swinging back and forth in holding tank 7, rotating bar 16 is swung so that a l-shaped rod 17 moves down, and another l-shaped rod 17 moves up, into
And two fixture blocks 18 is driven to move one on the other, the first spring is stretched, and the fixture block 18 moved up pushes wedge block 19, in turn
Motion bar 9 is pushed to move up, the fixture block 18 moved down is then along a Slideslip of wedge block 19 until by next wedge shape
Block 19 blocks, and drives motion bar 9 to move up to realize rotating bar 16 and swing back and forth, and motion bar 9 moves up drive and lives
Motion block 10 is mobile, and movable block 10 slides in the sliding groove 11 of 8 two sides of loose slot, and second spring is stretched.
Wherein, the push-and-pull hole 26 positioned at 25 lower section of rotation hole is offered on the side inner wall of holding tank 7, is pushed and pulled living in hole 26
It is dynamic that push-pull rod 21 is installed, and the both ends of push-pull rod 21 all extend to outside push-and-pull hole 26, two l-shaped rods 17 side close to each other
It is rotatably equipped with connecting rod 20, two connecting rods 20 one end close to each other is rotatably installed in the two sides of push-pull rod 21 respectively
On, push-pull rod 21 is fixedly installed with push and pull bar far from one end of motion bar 9, and rubber protecting jacket is socketed on push and pull bar, living
It is movably installed with movable block 10 in dynamic slot 8, the bottom end of motion bar 9 is fixedly mounted on the top side of movable block 10,10 bottom of movable block
Side is fixedly installed with the top of second spring, and the bottom end of second spring is fixedly mounted on the bottom side inner wall of loose slot 8, loose slot
Sliding groove 11 is offered on 8 two sides inner wall, the two sides of movable block 10 are slidably mounted on respectively in two sliding grooves 11, operation
The top side of platform 2 offers shifting chute 22, and the bottom side of the second fixture 4 is slidably mounted in shifting chute 22, the bottom end of two l-shaped rods 17
It is fixedly installed with fixture block 18 respectively, two fixture blocks 18 side close to each other is in contact with the two sides of wedge block 19 respectively, and two
Limiting slot is offered on the bottom side inner wall of placing groove 23, two 14 bottom sides of movable plate are fixedly installed with limited block, two limits
The bottom side of position block is slidably mounted on respectively in two limiting slots, and one end of rotation axis 15 is fixedly installed with crank, is socketed on crank
There is rubber protecting jacket, motion bar 9, which moves up, drives top plate 12 mobile, and top plate 12 drives two kellies 13 to move up, and two
Kelly 13 moves in two card slots 24 respectively, thus drive two movable plates 14 mobile towards direction close to each other, two
14, two kellies 13 of movable plate and top plate 12 jointly grip the steel pipe in holding tank 7, and multiple spot fix so that
Clamp it is stronger do not shake, be conducive to welding, after the completion of welding, push push and pull bar, drive push-pull rod 21 to close to motion bar 9
Direction it is mobile, push-pull rod 21 pushes two connecting rods 20 mobile, and two connecting rods 20 push two l-shaped rods 17 respectively so that
Two l-shaped rods 17 are located remotely from each other, and the first spring is stretched, and two l-shaped rods 17 are located remotely from each other far from two fixture blocks 18 of drive, until
Two fixture blocks 18 are detached from wedge block 19, and under second spring rebound effect, motion bar 9 moves down return, the lower shipper pole of motion bar 9
Dynamic top plate 12 moves down and two movable plates 14 are located remotely from each other, so that steel pipe can easily be taken from fixture
Under, it is easy to operate.
A kind of steel-pipe welding butting tooling that the utility model is mentioned, working principle are as follows: distinguish two steel pipes to be welded
It being fixed on two fixtures, starts telescope motor 5, the direction for pushing the second fixture 4 to close first fixture 3 is mobile, thus
Two steel pipes are docked, to weld, in fixed steel pipe, steel pipe is placed in holding tank 7, swing back and forth crank, drives
Rotation axis 15 rotates in rotation hole 25, and rotation axis 15 drives rotating bar 16 to swing back and forth in holding tank 7, and rotating bar 16 is swung
So that a l-shaped rod 17 moves down, another l-shaped rod 17 is moved up, and then two fixture blocks 18 is driven to move one on the other, the
One spring is stretched, and the fixture block 18 moved up pushes wedge block 19, and then motion bar 9 is pushed to move up, and moves down
Fixture block 18 by next wedge block 19 then along a Slideslip of wedge block 19 until blocked, to realize rotating bar 16 back and forth
It swings and motion bar 9 is driven to move up, motion bar 9, which moves up, drives movable block 10 mobile, and movable block 10 is in 8 two sides of loose slot
Sliding groove 11 in sliding, second spring is stretched, and drives top plate 12 mobile in addition, motion bar 9 moves up, top plate 12 drives
Two kellies 13 move up, and two kellies 13 move in two card slots 24 respectively, thus drive two movable plates 14 towards
Direction close to each other is mobile, and two movable plates, 14, two kellies 13 and top plate 12 jointly carry out the steel pipe in holding tank 7
Grip, and multiple spot fix so that clamp it is stronger do not shake, be conducive to welding, after the completion of welding, push push and pull bar, band
Dynamic push-pull rod 21 is to close to the movement of the direction of motion bar 9, and push-pull rod 21 pushes two connecting rods 20 mobile, and two connecting rods 20 are divided
Not Tui Dong two l-shaped rods 17 so that two l-shaped rods 17 are located remotely from each other, the first spring is stretched, and two l-shaped rods 17 are far from driving
Two fixture blocks 18 are located remotely from each other, until two fixture blocks 18 are detached from wedge blocks 19, under second spring rebound effect, motion bar 9 to
Lower mobile return, motion bar 9, which moves down, drives top plate 12 to move down and two movable plates 14 are located remotely from each other, so that steel pipe
It can easily be removed from fixture, it is easy to operate, meet use demand.
Embodiment described above is only that preferred embodiments of the present invention are described, not practical to this
Novel conception and scope is defined.Without departing from the design concept of the present utility model, ordinary people in the field couple
The all variations and modifications that the technical solution of the utility model is made, should fall within the protection scope of the present utility model, this reality
With novel claimed technology contents, it is all described in the claims.
Claims (9)
1. a kind of steel-pipe welding butting tooling, including two brackets (1) disposed in parallel, which is characterized in that two brackets (1)
Top is fixedly installed with the same station (2), and station (2) top side is fixedly installed with the first fixture (3), the first fixture (3)
Side be equipped with the second fixture (4) for being movably arranged on station (2) top side, the second fixture (4) is far from the first fixture (3)
Side is equipped with the telescope motor (5) being fixedly mounted on station (2) top side, is fixedly mounted on the output shaft of telescope motor (5)
Have telescopic rod (6), one end of telescopic rod (6) is fixedly mounted on the side of the second fixture (4) separate first fixture (3), described
The top side of first fixture (3) and the second fixture (4) offers holding tank (7), opens on the bottom side inner wall of two holding tanks (7)
Equipped with loose slot (8), it is movably installed with motion bar (9) in two loose slots (8), and the top of two motion bars (9) is prolonged
It extends in holding tank (7) and is fixedly installed with respectively top plate (12), offer placing groove on the two sides inner wall of holding tank (7)
(23), it is movably installed with movable plate (14) in placing groove (23), two movable plate (14) sides close to each other all extend to folder
It holds in slot (7), there are two kelly (13) for the fixed installation of top plate (12) top side, and two movable plate (14) bottom sides offer card slot
(24), kelly (13) and card slot (24) are to be obliquely installed, and the top of two kellies (13) extends respectively to two card slots (24)
It is interior, it is offered rotation hole (25) on the side inner wall of the holding tank (7), is rotatably equipped with rotation axis in rotation hole (25)
(15), one end of rotation axis (15) extends in holding tank (7) and is fixedly installed with rotating bar (16), the bottom side of rotating bar (16)
There are two l-shaped rod (17), two l-shaped rods (17) to be symmetrical arranged based on rotation axis (15) for rotational installation, and the two sides of motion bar (9) are equal
Equidistant intervals are fixedly installed with multiple wedge blocks (19), the bottom end of two l-shaped rods (17) two sides with wedge block (19) respectively
It is in contact, two l-shaped rod (17) sides close to each other are fixedly installed with same first spring.
2. a kind of steel-pipe welding butting tooling according to claim 1, which is characterized in that the side of the holding tank (7)
The push-and-pull hole (26) below rotation hole (25) is offered on inner wall, is movably installed with push-pull rod (21) in push-and-pull hole (26),
And the both ends of push-pull rod (21) all extend to push-and-pull hole (26) outside, two l-shaped rod (17) sides close to each other are rotatablely installed
Have connecting rod (20), two connecting rod (20) one end close to each other are rotatably installed in respectively on the two sides of push-pull rod (21).
3. a kind of steel-pipe welding butting tooling according to claim 2, which is characterized in that the push-pull rod (21) is far from living
One end of lever (9) is fixedly installed with push and pull bar, is socketed with rubber protecting jacket on push and pull bar.
4. a kind of steel-pipe welding butting tooling according to claim 1, which is characterized in that movable in the loose slot (8)
It is equipped with movable block (10), the bottom end of motion bar (9) is fixedly mounted on the top side of movable block (10).
5. a kind of steel-pipe welding butting tooling according to claim 4, which is characterized in that movable block (10) bottom side is solid
Dingan County is equipped with the top of second spring, and the bottom end of second spring is fixedly mounted on the bottom side inner wall of loose slot (8), loose slot
(8) it is offered on two sides inner wall sliding groove (11), the two sides of movable block (10) are slidably mounted on two sliding grooves respectively
(11) in.
6. a kind of steel-pipe welding butting tooling according to claim 1, which is characterized in that the top side of the station (2)
It offers shifting chute (22), the bottom side of the second fixture (4) is slidably mounted in shifting chute (22).
7. a kind of steel-pipe welding butting tooling according to claim 1, which is characterized in that the bottom end of two l-shaped rods (17)
It is fixedly installed with respectively fixture block (18), two fixture blocks (18) side close to each other connects with the two sides of wedge block (19) respectively
Touching.
8. a kind of steel-pipe welding butting tooling according to claim 1, which is characterized in that the bottom side of two placing grooves (23)
Limiting slot is offered on inner wall, two movable plate (14) bottom sides are fixedly installed with limited block, the bottom side point of two limited blocks
It is not slidably mounted in two limiting slots.
9. a kind of steel-pipe welding butting tooling according to claim 1, which is characterized in that one end of the rotation axis (15)
It is fixedly installed with crank, is socketed with rubber protecting jacket on crank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821778592.XU CN208880051U (en) | 2018-10-31 | 2018-10-31 | A kind of steel-pipe welding butting tooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821778592.XU CN208880051U (en) | 2018-10-31 | 2018-10-31 | A kind of steel-pipe welding butting tooling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208880051U true CN208880051U (en) | 2019-05-21 |
Family
ID=66517653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821778592.XU Expired - Fee Related CN208880051U (en) | 2018-10-31 | 2018-10-31 | A kind of steel-pipe welding butting tooling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208880051U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111336317A (en) * | 2020-03-19 | 2020-06-26 | 储小燕 | Construction method for erecting petroleum and natural gas pipeline |
| CN117066800A (en) * | 2023-10-16 | 2023-11-17 | 常州钢劲型钢股份有限公司 | Welding equipment and method for steel structural member of curve power transmission tower |
-
2018
- 2018-10-31 CN CN201821778592.XU patent/CN208880051U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111336317A (en) * | 2020-03-19 | 2020-06-26 | 储小燕 | Construction method for erecting petroleum and natural gas pipeline |
| CN111336317B (en) * | 2020-03-19 | 2020-12-11 | 金华馨菲科技有限公司 | Construction method for erecting petroleum and natural gas pipeline |
| CN117066800A (en) * | 2023-10-16 | 2023-11-17 | 常州钢劲型钢股份有限公司 | Welding equipment and method for steel structural member of curve power transmission tower |
| CN117066800B (en) * | 2023-10-16 | 2024-04-05 | 常州钢劲型钢股份有限公司 | Welding equipment and method for steel structural member of curve power transmission tower |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190521 Termination date: 20201031 |