CN108747744B - Hand-held electric rust removal device - Google Patents
Hand-held electric rust removal device Download PDFInfo
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- CN108747744B CN108747744B CN201810594517.6A CN201810594517A CN108747744B CN 108747744 B CN108747744 B CN 108747744B CN 201810594517 A CN201810594517 A CN 201810594517A CN 108747744 B CN108747744 B CN 108747744B
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- fixing
- fixing device
- left end
- adjusting
- connecting rod
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
- B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/033—Other grinding machines or devices for grinding a surface for cleaning purposes, e.g. for descaling or for grinding off flaws in the surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
- Manufacturing Of Electrical Connectors (AREA)
Abstract
The invention relates to the technical field of auxiliary devices for rust removal, in particular to a handheld electric rust removal device which does not need manual rust removal, saves manpower and improves the use reliability; the working efficiency is improved, and the production requirement can be met; meanwhile, the rust removal effect is improved, the quality of subsequent coating is guaranteed, and the practicability is improved; including electric rotary device, fixing device, adjusting sleeve, go up adjusting bolt, adjusting bolt down, the connecting rod, the mounting panel, the rubber pole, threaded rod and screwed pipe, electric rotary device's left side output is provided with the pivot, the top and the bottom of pivot are provided with multiunit equidistant last fixed slot and lower fixed slot respectively, adjusting sleeve's top and bottom are provided with respectively and adjust the screw down, fixing device's inside is provided with the working chamber, fixing device's the left end outside is provided with the perforation, still include the regulating plate, the bar spout, spacing post, the draw-in groove, fixing hole, steel brush and ball bearing.
Description
Technical Field
The invention relates to the technical field of rust removal auxiliary devices, in particular to a handheld electric rust removal device.
Background
As is well known, the surface treatment is the most important part in the steel structure coating process and is the basic process for obtaining the protective performance of the high-performance coating, the size of a component is small, the working environment is limited, the polishing effect of a bolt and the inner wall of a steel pipe is not very ideal, and the polishing effect is often the bottleneck for restricting the coating quality, and the rust removal device is an auxiliary device for removing rust on the surfaces of the steel pipe and the bolt and facilitating subsequent coating and is widely used in the field of the coating process; the existing rust removing device comprises a steel wire brush, wherein one end of the steel wire brush is provided with a handle, and the other end of the steel wire brush is provided with a steel wire; when the existing derusting device is used, the surfaces of the steel pipe and the bolt are derusted by a steel wire brush manually; the existing portable rust removing device is found to have higher workload, consume a large amount of manpower and cause lower use reliability in use; the working effect is low, and the production requirement cannot be met; simultaneously, rust removal is carried out manually, the rust removal effect is poor, the quality of subsequent coating is influenced, and the practicability is low.
Disclosure of Invention
In order to solve the technical problems, the invention provides a rust remover which does not need manual rust removal, saves manpower and improves the use reliability; the working efficiency is improved, and the production requirement can be met; improve the rust cleaning effect simultaneously, the quality of the follow-up application of guarantee improves the electronic rust cleaning device of hand-held type of practicality.
The invention relates to a handheld electric rust removing device, which comprises an electric rotating device, a fixing device, an adjusting sleeve, an upper adjusting bolt, a lower adjusting bolt, a connecting rod, a mounting plate, a rubber rod, a threaded pipe, a fixing bolt and a fixing nut, wherein the left output end of the electric rotating device is provided with a rotating shaft, the left end of the rotating shaft is inserted into the right end of the adjusting sleeve, the top end and the bottom end of the rotating shaft are respectively provided with a plurality of groups of upper fixing grooves and lower fixing grooves which are equally spaced, the top end and the bottom end of the adjusting sleeve are respectively provided with an upper adjusting screw hole and a lower adjusting screw hole, the output end of the upper adjusting bolt penetrates through the upper adjusting screw hole and is inserted into one group of the upper fixing grooves, the output end of the lower adjusting bolt penetrates through the lower adjusting screw hole and is inserted into one group of the lower fixing grooves, and the left end of the, the fixing device is internally provided with a working cavity, an adjusting plate is arranged in the working cavity, the adjusting plate can slide left and right in the working cavity, a through hole communicated with the working cavity is arranged at the outer side of the left end of the fixing device, one end of the connecting rod, which is adjacent to the fixing device, penetrates through the through hole from the outer side of the fixing device, extends into the working cavity and is hinged with the outer side of the left end of the adjusting plate, strip-shaped chutes are arranged at two sides of the connecting rod, two groups of side walls of the through hole are respectively provided with a limiting post, the two groups of limiting posts are respectively positioned in the two groups of strip-shaped chutes, one end of the connecting rod, which is far away from the fixing device, is provided with a clamping groove, the mounting plate is positioned in the clamping groove, fixing through holes are arranged at the clamping grooves of the mounting plate and the connecting rod, the output, the outer side wall of the rubber rod is provided with a steel wire brush, the middle of the left end of the fixing device is provided with a mounting hole, a ball bearing is fixedly mounted in the mounting hole, the right end of the threaded pipe penetrates through the ball bearing from the left end of the fixing device and extends into the working cavity, the outer side wall of the threaded pipe is fixedly connected with the inner side wall of the ball bearing, the threaded rod is located in the working cavity, the right end of the threaded rod is fixedly connected with the middle of the left end of the adjusting plate, and the left end of the threaded rod is inserted into the right end of the threaded pipe and screwed into the inner side.
According to the handheld electric rust removing device, six groups of through holes are formed, the six groups of through holes are uniformly distributed on the outer side of the left end of the fixing device, and the six groups of connecting rods, the mounting plate, the rubber rod and the steel wire brush are correspondingly arranged.
The handheld electric rust removing device also comprises a rotating cap, wherein the rotating cap is positioned on the left side of the fixing device and is arranged at the left end of the threaded pipe.
According to the handheld electric rust removing device, the cross section of the working cavity is circular, the adjusting plate is of a circular plate structure, and the outer side wall of the adjusting plate is in contact with the inner side wall of the working cavity.
According to the handheld electric rust removing device, the side wall of the working cavity is provided with the limiting sliding grooves, the outer side of the adjusting plate is provided with the limiting sliding blocks, the limiting sliding blocks are located in the limiting sliding grooves and can slide left and right in the limiting sliding grooves, and at least two groups of limiting sliding grooves and at least two groups of limiting sliding blocks are arranged.
Compared with the prior art, the invention has the beneficial effects that: through the arrangement, the rotating shaft, the adjusting sleeve and the fixing device are driven to rotate by the electric rotating device, the connecting rod and the rubber rod are driven to rotate by the fixing device, rust removal is carried out by the steel wire brush on the rubber rod, the left end of the threaded rod is screwed in or out from the right end of the threaded pipe by manually rotating the threaded pipe, the adjusting plate is moved left and right in the working cavity, the adjusting plate drives the right end of the connecting rod to move, the outward inclined angle of the left end of the connecting rod can be adjusted, the fixing bolt and the fixing nut are unscrewed, the mounting plate is rotated in the clamping groove of the connecting rod, the included angle between the rubber rod and the connecting rod is adjusted, the inner walls of the steel pipes with different inner diameters can be conveniently cleaned, the outer side of the bolt can be cleaned, the upper adjusting bolt and the lower adjusting bolt are respectively inserted into different upper fixing grooves and lower fixing grooves, and the distance between, the steel pipe inner wall to the different degree of depth is cleared up to the convenience, need not artifical manual rust cleaning, use manpower sparingly, improve and use the reliability, drive the high-speed rotation of rubber pole and steel brush through electric rotary device and remove rust, improve work efficiency, can satisfy the production demand, through the contained angle between angle and the rubber pole that adjusts the connecting rod left end and lean out and the connecting rod, make the steel brush in rotatory in-process and the inner wall of steel pipe or the outside of bolt fully contact, improve the rust cleaning effect, the quality of the follow-up application of guarantee, the high practicality is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of an exploded structure of the rubber pole, mounting plate and connecting rod connection of the present invention;
FIG. 3 is a schematic left side view of the fastening device of the present invention;
FIG. 4 is a schematic structural view of the steel brush of the present invention when cleaning the inner wall of the steel pipe;
in the drawings, the reference numbers: 1. an electric rotating device; 2. a fixing device; 3. adjusting the sleeve; 4. an upper adjusting bolt; 5. a lower adjusting bolt; 6. a connecting rod; 7. mounting a plate; 8. a rubber rod; 9. a threaded rod; 10. a threaded pipe; 11. fixing the bolt; 12. fixing a nut; 13. a rotating shaft; 14. an upper fixing groove; 15. a lower fixing groove; 16. an adjusting plate; 17. perforating; 18. a strip-shaped chute; 19. a limiting column; 20. a card slot; 21. a fixing through hole; 22. a wire brush; 23. a ball bearing; 24. rotating the cap; 25. a limiting chute; 26. and a limiting sliding block.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
As shown in fig. 1 to 4, the handheld electric rust removing device of the present invention comprises an electric rotating device 1, a fixing device 2, an adjusting sleeve 3, an upper adjusting bolt 4, a lower adjusting bolt 5, a connecting rod 6, a mounting plate 7, a rubber rod 8, a threaded rod 9, a threaded pipe 10, a fixing bolt 11 and a fixing nut 12, wherein a rotating shaft 13 is provided at a left output end of the electric rotating device, a left end of the rotating shaft is inserted into a right end of the adjusting sleeve, a plurality of sets of upper fixing grooves 14 and lower fixing grooves 15 are respectively provided at a top end and a bottom end of the rotating shaft, an upper adjusting screw hole and a lower adjusting screw hole are respectively provided at a top end and a bottom end of the adjusting sleeve, an output end of the upper adjusting bolt is screwed through the upper adjusting screw hole and inserted into one set of the upper fixing grooves, an output end of the lower adjusting bolt is screwed through the lower adjusting screw hole, the left end of the adjusting sleeve is fixedly connected with the middle part of the right end of the fixing device, a working cavity is arranged in the fixing device, an adjusting plate 16 is arranged in the working cavity, the adjusting plate can slide left and right in the working cavity, a through hole 17 communicated with the working cavity is arranged on the outer side of the left end of the fixing device, one end of the connecting rod, which is adjacent to the fixing device, penetrates through the through hole from the outer side of the fixing device, extends into the working cavity and is hinged with the outer side of the left end of the adjusting plate, strip-shaped sliding grooves 18 are arranged on both sides of the connecting rod, limiting columns 19 are arranged on both groups of side walls of the through hole, the two groups of limiting columns are respectively positioned in the two groups of strip-shaped sliding grooves, a clamping groove 20 is arranged at one end of the connecting rod, which is away from the fixing device, the mounting plate is, one end of the rubber rod, which is close to the fixing device, is fixedly connected with the mounting plate, a steel wire brush 22 is arranged on the outer side wall of the rubber rod, the middle part of the left end of the fixing device is provided with a mounting hole, a ball bearing 23 is fixedly arranged in the mounting hole, the right end of the threaded pipe penetrates through the ball bearing from the left end of the fixing device and extends into the working cavity, the outer side wall of the threaded pipe is fixedly connected with the inner side wall of the ball bearing, the threaded rod is positioned in the working cavity, the right end of the threaded rod is fixedly connected with the middle part of the left end of the adjusting plate, and the left end of the threaded rod is; through the arrangement, the rotating shaft, the adjusting sleeve and the fixing device are driven to rotate by the electric rotating device, the connecting rod and the rubber rod are driven to rotate by the fixing device, rust removal is carried out by the steel wire brush on the rubber rod, the left end of the threaded rod is screwed in or out from the right end of the threaded pipe by manually rotating the threaded pipe, the adjusting plate is moved left and right in the working cavity, the adjusting plate drives the right end of the connecting rod to move, the outward inclined angle of the left end of the connecting rod can be adjusted, the fixing bolt and the fixing nut are unscrewed, the mounting plate is rotated in the clamping groove of the connecting rod, the included angle between the rubber rod and the connecting rod is adjusted, the inner walls of the steel pipes with different inner diameters can be conveniently cleaned, the outer side of the bolt can be cleaned, the upper adjusting bolt and the lower adjusting bolt are respectively inserted into different upper fixing grooves and lower fixing grooves, and the distance between, the steel pipe inner wall to the different degree of depth is cleared up to the convenience, need not artifical manual rust cleaning, use manpower sparingly, improve and use the reliability, drive the high-speed rotation of rubber pole and steel brush through electric rotary device and remove rust, improve work efficiency, can satisfy the production demand, through the contained angle between angle and the rubber pole that adjusts the connecting rod left end and lean out and the connecting rod, make the steel brush in rotatory in-process and the inner wall of steel pipe or the outside of bolt fully contact, improve the rust cleaning effect, the quality of the follow-up application of guarantee, the high practicality is improved.
The handheld electric rust removing device is characterized in that six groups of through holes are formed, the six groups of through holes are uniformly distributed on the outer side of the left end of the fixing device, and the connecting rod, the mounting plate, the rubber rod and the steel wire brush are correspondingly provided with six groups; through the arrangement, the six groups of uniformly arranged steel wire brushes rotate, so that the inner diameter of the steel pipe is conveniently derusted, and the derusting efficiency and the derusting effect are improved.
The handheld electric rust removing device also comprises a rotating cap 24, wherein the rotating cap is positioned on the left side of the fixing device and is arranged at the left end of the threaded pipe; through the arrangement, the threaded pipe is convenient to rotate through the rotating cap, the position of the adjusting plate in the working cavity is convenient to adjust, and the use reliability is improved.
According to the handheld electric rust removing device, the cross section of the working cavity is circular, the adjusting plate is of a circular plate structure, and the outer side wall of the adjusting plate is in contact with the inner side wall of the working cavity; through the arrangement, the adjusting plate can be guaranteed to move left and right in the working cavity, the adjusting plate can be prevented from shaking in the working cavity, and the stability during rust removal operation is improved.
According to the handheld electric rust removing device, the side wall of the working cavity is provided with the limiting sliding groove 25, the outer side of the adjusting plate is provided with the limiting sliding block 26, the limiting sliding block is located in the limiting sliding groove and can slide left and right in the limiting sliding groove, and at least two groups of limiting sliding grooves and limiting sliding blocks are arranged; through the arrangement, the adjusting plate is prevented from rotating when moving through the matching of the limiting sliding groove and the limiting sliding block, and the practicability is improved.
The invention relates to a handheld electric rust removing device, which is characterized in that when in operation, before the operation is finished, the device is firstly moved to a position required by a user, a rotating cap is manually rotated to drive a threaded pipe to rotate, the left end of a threaded rod is screwed in or out from the inside of the right end of the threaded pipe, an adjusting plate is moved left and right in a working cavity, the adjusting plate drives the right end of a connecting rod to move, the outward inclined angle of the left end of the connecting rod can be adjusted, then a fixing bolt and a fixing nut are unscrewed, a mounting plate is rotated in a clamping groove of the connecting rod, the angle of an included angle between a rubber rod and the connecting rod is adjusted, then the fixing bolt and the fixing nut are screwed to fix the mounting plate and the clamping groove, a rotating shaft, an adjusting sleeve and a fixing device are driven to rotate by an electric rotating device, the connecting rod and the, the steel pipe inner walls with different inner diameters and the outer sides of the bolts can be conveniently cleaned, the upper adjusting bolt and the lower adjusting bolt are respectively inserted into different upper fixing grooves and lower fixing grooves, the distance between the electric rotating shaft and the steel wire brush can be adjusted, the steel pipe inner walls with different depths can be conveniently cleaned, manual derusting is not needed, labor is saved, the use reliability is improved, the rubber rod and the steel wire brush are driven by the electric rotating device to rotate at high speed for derusting, the working efficiency is improved, the production requirement can be met, the steel wire brush is fully contacted with the inner wall of the steel pipe or the outer side of the bolt in the rotating process by adjusting the outward inclined angle of the left end of the connecting rod and the included angle between the rubber rod and the connecting rod, the derusting effect is improved, the quality of subsequent coating is guaranteed, and through the matching of the limiting sliding groove and the limiting sliding block, the adjusting plate is prevented from rotating when moving.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (5)
1. A handheld electric rust removing device is characterized by comprising an electric rotating device (1), a fixing device (2), an adjusting sleeve (3), an upper adjusting bolt (4), a lower adjusting bolt (5), a connecting rod (6), a mounting plate (7), a rubber rod (8), a threaded rod (9), a threaded pipe (10), a fixing bolt (11) and a fixing nut (12), wherein a rotating shaft (13) is arranged at the left output end of the electric rotating device (1), the left end of the rotating shaft (13) is inserted into the right end of the adjusting sleeve (3), a plurality of groups of upper fixing grooves (14) and lower fixing grooves (15) which are equidistant are respectively arranged at the top end and the bottom end of the rotating shaft (13), an upper adjusting screw hole and a lower adjusting screw hole are respectively arranged at the top end and the bottom end of the adjusting sleeve (3), the output end of the upper adjusting bolt (4) penetrates through the upper adjusting screw hole and is inserted into one group of the upper fixing grooves (14), the output end screw dress of adjusting bolt (5) down passes down adjusts the screw and inserts one of them a set of under in fixed slot (15), the left end of adjusting sleeve pipe (3) and the right-hand member middle part fixed connection of fixing device (2), the inside of fixing device (2) is provided with the working chamber to be provided with regulating plate (16) in the working chamber, regulating plate (16) can slide from side to side in the working chamber, the left end outside of fixing device (2) is provided with perforation (17) communicating with the working chamber, the one end that connecting rod (6) are close to fixing device (2) passes perforation (17) from the outside of fixing device (2) and stretches into in the working chamber and is articulated with the left end outside of regulating plate (16), and all be provided with bar spout (18) in the both sides of connecting rod (6), all be provided with spacing post (19) on two sets of lateral wall of perforation (17), the two groups of limiting columns (19) are respectively positioned in the two groups of strip-shaped sliding grooves (18), one end of the connecting rod (6) far away from the fixing device (2) is provided with a clamping groove (20), the mounting plate (7) is positioned in the clamping groove (20), fixing through holes (21) are respectively arranged at the positions of the mounting plate (7) and the clamping groove (20) of the connecting rod (6), the output end of the fixing bolt (11) sequentially penetrates through the two groups of fixing through holes (21) and is in threaded connection with the fixing nut (12), one end of the rubber rod (8) close to the fixing device (2) is fixedly connected with the mounting plate (7), a steel wire brush (22) is arranged on the outer side wall of the rubber rod (8), the middle part of the left end of the fixing device (2) is provided with a mounting hole, a ball bearing (23) is fixedly arranged in the mounting hole, the right end of the threaded pipe (10) penetrates through the ball bearing (23) from the left end, and the lateral wall of screwed pipe (10) and ball bearing (23)'s inside wall fixed connection, threaded rod (9) are located the working chamber, and the right-hand member of threaded rod (9) and the left end middle part fixed connection of regulating plate (16), the left end of threaded rod (9) inserts and spiral shell dress to the right-hand member of screwed pipe (10) inside.
2. The handheld electric rust removing device as claimed in claim 1, characterized in that the through holes (17) are provided in six groups, the six groups of through holes (17) are evenly distributed outside the left end of the fixing device (2), and the connecting rod (6), the mounting plate (7), the rubber rod (8) and the wire brush (22) are respectively provided in six groups.
3. The hand-held electric rust removing device as claimed in claim 2, further comprising a rotating cap (24), wherein the rotating cap (24) is located at the left side of the fixing device (2), and the rotating cap (24) is installed at the left end of the threaded pipe (10).
4. A hand-held electric rust removing apparatus according to claim 3, characterized in that the working chamber has a circular cross section, the adjusting plate (16) has a circular plate structure, and the outer side wall of the adjusting plate (16) is in contact with the inner side wall of the working chamber.
5. The handheld electric rust removing device as claimed in claim 4, characterized in that a limiting sliding groove (25) is arranged on the side wall of the working chamber, a limiting slide block (26) is arranged on the outer side of the adjusting plate (16), the limiting slide block (26) is positioned in the limiting sliding groove (25), the limiting slide block (26) can slide left and right in the limiting sliding groove (25), and at least two sets of the limiting sliding groove (25) and the limiting slide block (26) are arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810594517.6A CN108747744B (en) | 2018-06-11 | 2018-06-11 | Hand-held electric rust removal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810594517.6A CN108747744B (en) | 2018-06-11 | 2018-06-11 | Hand-held electric rust removal device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108747744A CN108747744A (en) | 2018-11-06 |
| CN108747744B true CN108747744B (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810594517.6A Active CN108747744B (en) | 2018-06-11 | 2018-06-11 | Hand-held electric rust removal device |
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| CN (1) | CN108747744B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113843118A (en) * | 2021-08-17 | 2021-12-28 | 沪东中华造船(集团)有限公司 | Manual coating tool for inner wall of ship piping system |
| CN115194619B (en) * | 2022-07-14 | 2023-08-01 | 太原福莱瑞达物流设备科技有限公司 | Portable grinding device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101073237B1 (en) * | 2009-03-23 | 2011-10-12 | 창원대학교 산학협력단 | spindle interface grinding device |
| CN204339523U (en) * | 2014-12-25 | 2015-05-20 | 济宁市齐力机电设备有限公司 | A kind of polishing robotic devices |
| CN105643416A (en) * | 2016-01-08 | 2016-06-08 | 苏交科集团股份有限公司 | Portable rust treatment machine |
| CN205870232U (en) * | 2016-07-25 | 2017-01-11 | 山西省工业设备安装有限公司 | Steel pipe inner wall rust cleaning device with adjustable |
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2018
- 2018-06-11 CN CN201810594517.6A patent/CN108747744B/en active Active
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| CN108747744A (en) | 2018-11-06 |
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