CN112413228A - Pipeline butt joint auxiliary device for explosion-proof electrical engineering construction - Google Patents
Pipeline butt joint auxiliary device for explosion-proof electrical engineering construction Download PDFInfo
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- CN112413228A CN112413228A CN202011411904.5A CN202011411904A CN112413228A CN 112413228 A CN112413228 A CN 112413228A CN 202011411904 A CN202011411904 A CN 202011411904A CN 112413228 A CN112413228 A CN 112413228A
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- fixedly connected
- connecting rod
- box body
- shaped plate
- opening
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/065—Scissor linkages, i.e. X-configuration
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Electric Cable Installation (AREA)
Abstract
The invention discloses an auxiliary device for butt joint of pipelines for explosion-proof electrical engineering construction, which comprises a box body and a gear box, wherein an operation panel is arranged on the right side of the box body, a sleeve is fixedly connected to the left side of the operation panel, an opening is formed in the side wall of the right side of the box body, a bearing is fixedly connected to the opening, the left end of the sleeve penetrates through the bearing, extends to the inner cavity of the box body and is movably connected with a first threaded rod, clamping blocks are arranged on the left side and the right side of the top of the box body, and a sliding groove is. According to the invention, through the arrangement of the first connecting rod, the second connecting rod and the sliding block, a worker shakes the second rocker to drive the second threaded rod, the second threaded rod drives the sliding block to slide, the sliding block drives the connecting rods to rotate, and the lifting of the upper U-shaped plate is realized under the combined action of the first connecting rod and the second connecting rod, so that the height of the pipeline on the clamping block is finally adjusted up and down. The invention has the characteristics of adjustable height, angle adjustment and the like through a series of structures.
Description
Technical Field
The invention relates to the technical field of electrical engineering construction, in particular to an auxiliary pipeline butt joint device for explosion-proof electrical engineering construction.
Background
The electrical engineering construction is one of the cores in the engineering construction, all the constructions related to electricity belong to one part of the electrical engineering construction, a plurality of pipelines are needed to be used in the electrical engineering construction, the pipelines need to be communicated to realize the stable operation of electrical equipment, the pipeline butt joint is an indispensable ring, and if the pipeline butt joint is not completed, great potential safety hazards can be brought.
Need adjust height and angle in current pipeline butt joint, but height and angle modulation difficulty in the pipeline butt joint need rely on traditional manpower to accomplish these works, and is consuming time power, in order to solve prior art's problem, need an explosion-proof pipeline butt joint auxiliary device for electrical engineering construction now, help the better pipeline butt joint that carries on of staff.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of difficult height adjustment and incapability of angle adjustment in the prior art, and provide the pipeline butt joint auxiliary device for the explosion-proof electrical engineering construction. The pipeline butt joint auxiliary device for the explosion-proof electrical engineering construction has the characteristics of height adjustment, rotary butt joint and the like.
In order to achieve the purpose, the invention provides the following technical scheme: an auxiliary device for butt joint of pipelines for construction of explosion-proof electrical engineering comprises a box body and a gear box, wherein an operation panel is arranged on the right side of the box body, a sleeve is fixedly connected to the left side of the operation panel, an opening is formed in the side wall of the right side of the box body, a bearing is fixedly connected to the opening, the left end of the sleeve penetrates through the bearing and extends to the inner cavity of the box body, a first threaded rod is movably connected to the clamping block through the bearing, clamping blocks are arranged on the left side and the right side of the top of the box body, a sliding groove is formed in the top of the box body, the clamping block on the left side penetrates through the sliding groove and extends to the inner cavity of the box body, one end, far away from the sleeve, of the first threaded rod is movably connected to the clamping block through the bearing, a second rocker is arranged on the right side, the gearbox is characterized in that a first gear is fixedly connected with the bottom of an inner cavity of the gearbox, a bearing is fixedly connected with the bottom of the inner cavity of the gearbox, a rotating rod is movably connected with the bottom of the inner cavity of the gearbox through the bearing, a second gear is fixedly connected with the rotating rod, a rotating disc is fixedly connected with the top of the rotating rod, the right side of the second gear is meshed with the first gear, and a lifting mechanism is arranged between the box body and the gearbox.
Preferably, the lifting mechanism comprises two U-shaped plates, the top of the U-shaped plate is fixedly connected to the box body, the bottom of the U-shaped plate is fixedly connected to the turntable, the right side of the U-shaped plate is provided with a first rocker, the side wall of the right side of the U-shaped plate is provided with an opening, the opening is fixedly connected with a bearing, the right end of the first rocker penetrates through the bearing and extends to the inner side of the U-shaped plate, the U-shaped plate is fixedly connected with a second threaded rod below, one end of the second threaded rod is movably connected to the first fixed plate through the bearing, slide bars are fixedly connected to the front side and the rear side of the U-shaped plate below, slide blocks are slidably connected to the slide bars, second connecting rods are movably connected to the slide blocks, the left side of the U-shaped plate below is fixedly connected with two second fixed plates, and first connecting rods, the middle of the first connecting rod is movably connected with the second connecting rod, a sliding rod is fixedly connected to the U-shaped plate above the first connecting rod, a sliding block is connected to the sliding rod above the first connecting rod in a sliding mode, the top end of the first connecting rod is movably connected to the sliding block above the first connecting rod, two second fixing plates are fixedly connected to the left side of the U-shaped plate above the first connecting rod, and the top ends of the two second connecting rods are fixedly connected to the second fixing plates above the second connecting rod.
Preferably, the middle parts of the first connecting rod and the second connecting rod are connected in a cross mode, the first connecting rod and the second connecting rod are crossed in an X shape, and the first connecting rod is movably connected with the second connecting rod through a pin shaft.
Preferably, the top of the gear box is provided with an opening, the caliber of the opening is larger than the diameter of the rotary table, and the rotary table penetrates through the opening and extends to the outer side of the top of the gear box.
Preferably, the operation panel is provided with an anti-slip sleeve, the protective sleeve is provided with anti-slip particles, and the anti-slip particles are provided with anti-slip lines.
Preferably, the lower part is fixedly connected with a connecting plate between the two sliding blocks, an opening is arranged in the middle of the connecting plate, an internal thread is arranged on the opening, an external thread is arranged on the second threaded rod, and the internal thread at the opening is matched with the external thread of the second threaded rod.
Preferably, the two clamping blocks are fixedly connected with anti-skid pads.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, through the arrangement of the first gear and the second gear, a worker rotates the first rocker, the first gear rotates to drive the second gear, the second gear drives the turntable, the turntable drives the U-shaped plate, the U-shaped plate drives the box body, the box body drives the clamping block to rotate, and the pipeline rotates along with the rotation, so that the purpose of rotating the pipeline horizontally is achieved.
2. According to the invention, through the arrangement of the first connecting rod, the second connecting rod and the sliding block, a worker shakes the second rocker to drive the second threaded rod, the second threaded rod drives the sliding block to slide, the sliding block drives the connecting rods to rotate, and the lifting of the upper U-shaped plate is realized under the combined action of the first connecting rod and the second connecting rod, so that the height of the pipeline on the clamping block is finally adjusted up and down.
Drawings
FIG. 1 is a front view of the present invention.
Fig. 2 is a right side view of the present invention.
Fig. 3 is a structural view of the elevating mechanism of the present invention.
Reference numbers in the figures: 1. a box body; 2. a U-shaped plate; 3. a gear case; 4. an operation panel; 5. a sleeve; 6. a first threaded rod; 7. a clamping block; 8. a non-slip mat; 9. a first rocker; 10. a second threaded rod; 11. a slider; 12. a first connecting rod; 13. a slide bar; 14. a second connecting rod; 15. a connecting plate; 16. a first fixing plate; 17. a second fixing plate; 18. a second rocker; 19. a first gear; 20. a second gear; 21. a turntable.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: an auxiliary device for butt joint of pipelines for explosion-proof electrical engineering construction comprises a box body 1 and a gear box 3, wherein the top of the gear box 3 is provided with an opening, the caliber of the opening is larger than the diameter of a rotary plate 21, the rotary plate 21 penetrates through the opening and extends to the outer side of the top of the gear box 3, the right side of the box body 1 is provided with an operating plate 4, the operating plate 4 is provided with an anti-slip sleeve, the protective sleeve is provided with anti-slip particles, the anti-slip particles are provided with anti-slip lines, the left side of the operating plate 4 is fixedly connected with a sleeve 5, the right side wall of the box body 1 is provided with an opening, the opening is fixedly connected with a bearing, the left end of the sleeve 5 penetrates through the bearing and extends to the inner cavity of the box body 1 and is movably connected with a first threaded rod 6, the left side and the right side of the top of the box body 1 are provided with clamping blocks 7, the two clamping blocks 7, the gearbox 3, the right side of the gearbox 3 is provided with a second rocker 18, the right side wall of the gearbox 3 is provided with an opening, the opening of the gearbox 3 is fixedly connected with a bearing, the left end of the second rocker 18 penetrates through the bearing and extends into the inner cavity of the gearbox 3 and is fixedly connected with a first gear 19, the bottom of the inner cavity of the gearbox 3 is fixedly connected with a bearing, the bottom of the inner cavity of the gearbox 3 is movably connected with a rotating rod through the bearing, the rotating rod is fixedly connected with a second gear 20, the top of the rotating rod is fixedly connected with a rotating disc 21, the right side of the second gear 20 is engaged with the first gear 19, a lifting mechanism is arranged between the box body 1 and the gearbox 3 and comprises two U-shaped plates 2, the top of the upper U-shaped plate 2 is fixedly connected on the box body 1, the bottom of the lower U-shaped plate 2, the opening is fixedly connected with a bearing, the right end of the first rocker 9 penetrates through the bearing and extends to the inner side of the U-shaped plate 2 and is fixedly connected with a second threaded rod 10, the lower U-shaped plate 2 is fixedly connected with a first fixed plate 16, one end of the second threaded rod 10 is movably connected on the first fixed plate 16 through the bearing, the front side and the rear side of the lower U-shaped plate 2 are fixedly connected with slide rods 13, the slide rods 13 are slidably connected with slide blocks 11, a connecting plate 15 is fixedly connected between the two lower slide blocks 11, an opening is arranged in the middle of the connecting plate 15 and is provided with internal threads, the second threaded rod 10 is provided with external threads, the internal threads at the opening are matched with the external threads of the second threaded rod 10, the slide blocks 11 are movably connected with second connecting rods 14, the left side of the lower U-shaped plate 2 is fixedly connected with, the middle parts of the first connecting rods 12 and the second connecting rods 14 are connected in a cross mode, the first connecting rods 12 and the second connecting rods 14 are crossed in an X shape, the first connecting rods 12 are movably connected with the second connecting rods 14 through pin shafts, the middle parts of the first connecting rods 12 and the second connecting rods 14 are movably connected, sliding rods 13 are fixedly connected to the upper U-shaped plates 2, sliding blocks 11 are connected to the upper sliding rods 13 in a sliding mode, the top ends of the first connecting rods 12 are movably connected to the upper sliding blocks 11, two second fixing plates 17 are fixedly connected to the left sides of the upper U-shaped plates 2, and the top ends of the two second connecting rods 14 are fixedly connected to the upper second fixing plates 17.
The working principle is as follows: when the invention works, firstly, a worker puts a pipeline between two clamping blocks 7, rotates an operating disc 4, the operating disc 4 drives a sleeve 5 to rotate, the sleeve 5 drives a first threaded rod 6 to slowly move rightwards, the first threaded rod 6 drives a left clamping block 7 to move rightwards to clamp the pipeline, an anti-slip mat 8 on the clamping block 7 prevents the pipeline from butting, the pipeline slides to influence the butting work, secondly, the first rocker 9 is rocked, the first rocker 9 drives a second threaded rod 10 to rotate, the second threaded rod 10 drives a connecting plate 15 to move leftwards, the connecting plate 15 drives a front slider 11 and a rear slider 11 of a lower U-shaped plate 2 to slide leftwards on a sliding rod 13, the sliders 11 drive a second connecting rod 14 to rotate, the second connecting rod 14 drives the first connecting rod 12 to rotate, the first connecting rod 12 drives the slider 11 at the upper end of the first connecting rod 12 to move leftwards, the first connecting rod 12 and the second connecting rod 14 drive, the upper U-shaped plate 2 drives the box body 1, the box body 1 drives the clamping block 7, the clamping block 7 drives the pipeline to move upwards, when the pipeline moves to the height of butt joint, the second rocker 18 is shaken, the second rocker 18 drives the first gear 19 to rotate, the first gear 19 drives the second gear 20 to rotate, the second gear 20 drives the rotating shaft to rotate, the rotating shaft drives the rotating disc 21 at the top of the rotating shaft to rotate, the rotating disc 21 drives the lower U-shaped plate 2 to rotate, the lower U-shaped plate 2 drives the upper U-shaped plate 2 to rotate, the upper U-shaped plate 2 drives the box body 1 to rotate, the box body 1 drives the clamping block 7 to rotate, the clamping block 7 drives the pipeline to rotate, the pipeline rotates horizontally to adjust the butt joint angle, then the pipeline butt joint is carried out, after the pipeline butt joint is finished, a worker rotates the operation panel 4 reversely, the operation panel 4 drives the sleeve 5, the sleeve 5 drives the first, after the clamping of the pipeline is finished, the first rocker 9 is rocked, the first rocker 9 drives the second threaded rod 10 to rotate, the second threaded rod 10 drives the connecting plate 15 to move rightwards, the connecting plate 15 drives the front and rear sliding blocks 11 on the lower U-shaped plate 2 to slide on the sliding rods 13, the sliding blocks 11 drive the second connecting rod 14 to rotate, the second connecting rod 14 drives the first connecting rod 12 to rotate, the first connecting rod 12 drives the upper sliding block 11 of the first connecting rod 12 to move rightwards on the sliding rods 13, the first connecting rod 12 and the second connecting rod 14 jointly drive the upper U-shaped plate 2 to descend, the upper U-shaped plate 2 drives the box body 1, the box body 1 drives the clamping block 7 to descend and return to the original position, the second rocker 18 is rocked, the second rocker 18 drives the first gear 19, the first gear 19 drives the second gear 20, the second gear 20 drives the rotating shaft, the rotating shaft drives the rotating disc, the lower U-shaped plate 2 drives the upper U-shaped plate 2, the upper U-shaped plate 2 drives the box body 1, the box body 1 drives the clamping block 7, the clamping block 7 is rotated back to the original direction, and time and labor cost are saved in the butt joint work of the pipeline.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides an explosion-proof electric engineering construction is with pipeline butt joint auxiliary device, includes box (1) and gear box (3), its characterized in that: the right side of the box body (1) is provided with an operating panel (4), the left side of the operating panel (4) is fixedly connected with a sleeve (5), the right side wall of the box body (1) is provided with an opening, the opening is fixedly connected with a bearing, the left end of the sleeve (5) penetrates through the bearing and extends to the inner cavity of the box body (1) and is movably connected with a first threaded rod (6), the left side and the right side of the top of the box body (1) are provided with clamping blocks (7), the top of the box body (1) is provided with a sliding groove, the left side clamping block (7) penetrates through the sliding groove and extends to the inner cavity of the box body (1), one end of the first threaded rod (6) far away from the sleeve (5) is movably connected onto the clamping block (7) through the bearing, the right side of the gear box (3) is provided with a second rocker (18), the right side wall of the gear, the bearing is run through to second rocker (18) left end, and extends to gear box (3) inner chamber to fixedly connected with first gear (19), gear box (3) inner chamber bottom fixedly connected with bearing, gear box (3) inner chamber bottom has the bull stick through bearing swing joint, fixedly connected with second gear (20) on the bull stick, bull stick top fixedly connected with carousel (21), second gear (20) right side meshing is connected with first gear (19), be equipped with elevating system between box (1) and gear box (3).
2. The pipeline butt joint auxiliary device for the explosion-proof electrical engineering construction according to claim 1, characterized in that: the lifting mechanism comprises two U-shaped plates (2), the top of each U-shaped plate (2) is fixedly connected to the box body (1), the bottom of each U-shaped plate (2) is fixedly connected to the rotary table (21), the right side of each U-shaped plate (2) is provided with a first rocker (9) below, the right side wall of each U-shaped plate (2) is provided with an opening, a bearing is fixedly connected to each opening, the right end of each first rocker (9) penetrates through the bearing and extends to the inner side of each U-shaped plate (2) and is fixedly connected with a second threaded rod (10), a first fixed plate (16) is fixedly connected to each U-shaped plate (2) below, one end of each second threaded rod (10) is movably connected to each first fixed plate (16) through the bearing, sliding rods (13) are fixedly connected to the front side and the rear side of each U-shaped plate (2) below, and sliding blocks, swing joint has second connecting rod (14), below on slider (11) two second fixed plates (17), two of U-shaped plate (2) left side fixedly connected with, swing joint has head rod (12) on second fixed plate (17), department swing joint, top in the middle of head rod (12) and second connecting rod (14) fixedly connected with slide bar (13), top on U-shaped plate (2) sliding connection has slider (11) on slide bar (13), head rod (12) top swing joint is on slider (11) of top, top two of U-shaped plate (2) left side fixedly connected with two second fixed plates (17), two on second connecting rod (14) top fixed connection is on second fixed plate (17) of top.
3. The pipeline butt joint auxiliary device for the explosion-proof electrical engineering construction according to claim 1, characterized in that: the middle parts of the first connecting rod (12) and the second connecting rod (14) are connected in a cross mode, the first connecting rod (12) and the second connecting rod (14) are crossed in an X shape, and the first connecting rod (12) is movably connected with the second connecting rod (14) through a pin shaft.
4. The pipeline butt joint auxiliary device for the explosion-proof electrical engineering construction according to claim 1, characterized in that: the top of the gear box (3) is provided with an opening, the caliber of the opening is larger than the diameter of the rotary table (21), and the rotary table (21) penetrates through the opening and extends to the outer side of the top of the gear box (3).
5. The pipeline butt joint auxiliary device for the explosion-proof electrical engineering construction according to claim 1, characterized in that: the anti-skidding protective sleeve is characterized in that an anti-skidding sleeve is arranged on the operating panel (4), anti-skidding particles are arranged on the protective sleeve, and anti-skidding grains are arranged on the anti-skidding particles.
6. The pipeline butt joint auxiliary device for the explosion-proof electrical engineering construction according to claim 1, characterized in that: below two fixedly connected with connecting plate (15) between slider (11), department is equipped with the opening in the middle of connecting plate (15), be equipped with the internal thread on the opening, be equipped with the external screw thread on second threaded rod (10), the internal thread of opening part matches each other with the external screw thread of second threaded rod (10).
7. The pipeline butt joint auxiliary device for the explosion-proof electrical engineering construction according to claim 1, characterized in that: and the two clamping blocks (7) are fixedly connected with anti-skid pads (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011411904.5A CN112413228A (en) | 2020-12-04 | 2020-12-04 | Pipeline butt joint auxiliary device for explosion-proof electrical engineering construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011411904.5A CN112413228A (en) | 2020-12-04 | 2020-12-04 | Pipeline butt joint auxiliary device for explosion-proof electrical engineering construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112413228A true CN112413228A (en) | 2021-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011411904.5A Pending CN112413228A (en) | 2020-12-04 | 2020-12-04 | Pipeline butt joint auxiliary device for explosion-proof electrical engineering construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112413228A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113800210A (en) * | 2021-09-22 | 2021-12-17 | 上海建工四建集团有限公司 | Transport system |
| CN115816019A (en) * | 2022-11-29 | 2023-03-21 | 江苏龙英管道新材料有限公司 | Pipe penetrating device and method for prefabricated overhead heat-insulating pipe |
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| FR2932240A1 (en) * | 2008-06-10 | 2009-12-11 | Dle Specialites | Pipe element i.e. drinking water supplying pipe element, descending and positioning method, involves moving assembly formed by movable beam and pipe element to encase male end of element with female end of pipe section |
| CN207087016U (en) * | 2017-09-01 | 2018-03-13 | 江苏佳润管业有限公司 | A kind of high pipe cutting machine of cut quality |
| CN208557274U (en) * | 2018-07-31 | 2019-03-01 | 中信戴卡股份有限公司 | Clamping device is used in a kind of processing of automotive hub |
| CN211505281U (en) * | 2020-02-19 | 2020-09-15 | 程干权 | Quick nondestructive test equipment of pressure vessel |
| CN211692307U (en) * | 2020-03-23 | 2020-10-16 | 桑峰军 | Petroleum drilling machine base convenient to location |
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2020
- 2020-12-04 CN CN202011411904.5A patent/CN112413228A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2932240A1 (en) * | 2008-06-10 | 2009-12-11 | Dle Specialites | Pipe element i.e. drinking water supplying pipe element, descending and positioning method, involves moving assembly formed by movable beam and pipe element to encase male end of element with female end of pipe section |
| CN207087016U (en) * | 2017-09-01 | 2018-03-13 | 江苏佳润管业有限公司 | A kind of high pipe cutting machine of cut quality |
| CN208557274U (en) * | 2018-07-31 | 2019-03-01 | 中信戴卡股份有限公司 | Clamping device is used in a kind of processing of automotive hub |
| CN211505281U (en) * | 2020-02-19 | 2020-09-15 | 程干权 | Quick nondestructive test equipment of pressure vessel |
| CN211692307U (en) * | 2020-03-23 | 2020-10-16 | 桑峰军 | Petroleum drilling machine base convenient to location |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113800210A (en) * | 2021-09-22 | 2021-12-17 | 上海建工四建集团有限公司 | Transport system |
| CN115816019A (en) * | 2022-11-29 | 2023-03-21 | 江苏龙英管道新材料有限公司 | Pipe penetrating device and method for prefabricated overhead heat-insulating pipe |
| CN115816019B (en) * | 2022-11-29 | 2023-10-13 | 江苏龙英管道新材料有限公司 | Pipe penetrating device and pipe penetrating method for prefabricated overhead heat-insulating pipe |
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Application publication date: 20210226 |
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