CN213004487U - Steel material grinding device for building engineering - Google Patents
Steel material grinding device for building engineering Download PDFInfo
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- CN213004487U CN213004487U CN202022021655.0U CN202022021655U CN213004487U CN 213004487 U CN213004487 U CN 213004487U CN 202022021655 U CN202022021655 U CN 202022021655U CN 213004487 U CN213004487 U CN 213004487U
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- polishing
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- building engineering
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Abstract
The utility model discloses a steel polishing device for building engineering, which comprises a workbench, wherein side baffles are arranged at the middle parts of the two sides of the upper surface of the workbench, the top ends of the side baffles are provided with a top plate, a screw rod and a slide rod are respectively arranged between the two side baffles, the screw rod is positioned below the slide rod and is rotationally connected with the side baffles through a bearing, one end of the screw rod extends to the outer side of the side baffle and is connected with a motor, when in use, steel materials to be polished are placed on the placing plate, the positions of the two fixing mechanisms are adjusted according to the length of the steel so that the two ends of the steel are positioned in the supporting seat, then the stud is screwed to push the pressing plate to move downwards to be tightly contacted with the upper surface of the steel, thereby fix steel to under the effect of spring, not only played spacing effect to the pressure strip, can also effectively prevent to lead to fixed not firm phenomenon to take place owing to the double-screw bolt is not hard up at the in-process of polishing.
Description
Technical Field
The utility model relates to a building engineering technical field specifically is a steel grinding device for building engineering.
Background
The building engineering is an engineering entity which is used for planning, surveying, designing, constructing, completing and the like for newly building, reconstructing or extending building structures and auxiliary structure facilities, and is used for installing lines, pipelines and equipment matched with the engineering entity.
Building steel need polish at the in-process that uses, steel grinding device for the building engineering on the existing market is not convenient enough when using, general steel grinding device for the building engineering needs artifical handheld grinding device to polish steel, not only waste time and energy but also very inconvenient, thereby influence people's work efficiency, and simultaneously, there is the safety problem in the process of polishing, in addition, current grinding device is not convenient for change the polishing piece, and the polishing piece is the horizontal hunting easily in the use, thereby influence the quality of polishing.
Disclosure of Invention
An object of the utility model is to provide a steel grinding device for building engineering to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a steel polishing device for building engineering comprises a workbench, wherein side baffles are arranged at the middle parts of two sides of the upper surface of the workbench, the top ends of the side baffles are provided with a top plate, a screw rod and a slide rod are respectively arranged between the two side baffles, the screw rod is positioned below the slide rod and is rotationally connected with the side baffles through a bearing, one end of the screw rod extends to the outer side of the side baffle and is connected with a motor, the screw rod and the sliding rod are connected with a movable seat, one side of the top end of the movable seat is provided with an installation plate, the bottom of the installation plate is fixedly provided with a hydraulic cylinder, a movable plate is arranged at the bottom of the hydraulic cylinder, one side of the movable plate is connected with the side wall of the movable seat in a sliding way, and the bottom of the movable plate is provided with a polishing motor, the bottom of the polishing motor is connected with a polishing sheet, the upper surface of the workbench is connected with a placing plate in a sliding manner, and two sides of the upper surface of the placing plate are both connected with fixing mechanisms in a sliding manner;
the middle part of the upper surface of the polishing sheet is provided with a sleeve, the shaft part of the polishing motor is connected with a rotating shaft, the inner wall of the bottom of the sleeve is provided with second clamping teeth distributed in a circumferential array, the side wall of the bottom of the rotating shaft is provided with first clamping teeth distributed in a circumferential array, the first clamping teeth are meshed with the second clamping teeth, and the rotating shaft is fixedly connected with the sleeve through a locking mechanism;
the fixing mechanism comprises a supporting seat which is of a U-shaped structure, a threaded hole is formed in the middle of the upper surface of the supporting seat, a stud is rotationally connected in the threaded hole, the bottom of the stud is rotationally connected with a pressing plate through a bearing, a knob is arranged at the top end of the stud, a spring is arranged between two sides of the upper surface of the pressing plate and the inner wall of the top end of the supporting seat, when the fixing mechanism is used, steel to be polished is placed on a placing plate, the positions of two fixing mechanisms are adjusted according to the length of the steel, so that two ends of the steel are located in the supporting seat, then the stud is screwed, the pressing plate is pushed by the stud to move downwards to be in close contact with the upper surface of the steel, the steel is fixed, the pressing plate is limited under the action of the spring, and the phenomenon that the stud is not firmly fixed due to looseness in the polishing, the steel is positioned under the polishing sheet by pushing the placing plate, then the hydraulic cylinder is started to make the polishing sheet contact with the surface of the steel, then the polishing motor and the motor are started to polish the steel by the polishing sheet, the movable seat drives the polishing sheet to move left and right by the rotation of the lead screw, thereby avoiding polishing by manually moving the position of the polishing sheet, improving the automation, greatly reducing the labor intensity of people, improving the working efficiency, being convenient for the device to fixedly polish the steel with different sizes and dimensions by arranging the sleeve and the rotating shaft to be engaged and clamped by the first clamping teeth and the second clamping teeth, leading the connection of the polishing sheet to be more stable, and avoiding the phenomenon of left and right shaking in the rotating process, thereby improved the quality of polishing, be convenient for simultaneously sleeve and pivot between be connected and fixed to under locking mechanism's effect, be convenient for install and dismantle the polishing piece, thereby be convenient for change the polishing piece.
As a further aspect of the present invention: the utility model discloses a portable electronic device, including the movable seat, the movable seat is provided with the screw hole with the junction of screw rod, the movable seat is provided with the slide opening with the junction of slide rod, movable seat and fly leaf junction one side are provided with the spacing groove, the fly leaf passes through stopper and spacing groove sliding connection, through the setting of slide opening, has played spacing effect to the movable seat, through the cooperation between stopper and the spacing groove for the fly leaf is more firm.
As a further aspect of the present invention: locking mechanism includes the connecting block, connecting block one side is provided with two locking posts, constitutes "U" type structure between two locking posts and the connecting block, the sleeve all is provided with two through-holes, two with the pivot surface the locking post runs through the through-hole and the swivelling joint has lock nut, and through the cooperation between connecting block and the locking post, it is fixed to be convenient for lock between sleeve and the pivot to be favorable to changing the polishing piece.
As a further aspect of the present invention: the utility model discloses a steel plate placing device, including workstation upper surface, place board bottom, the board is placed to the board, workstation upper surface both sides all are provided with first spout, it is provided with the second slider to place board bottom both sides and first spout correspondence, second slider and first spout sliding connection are convenient for adjust the position of placing the board through second slider and first spout sliding connection to be convenient for adjust the position of steel.
As a further aspect of the present invention: place board upper surface both sides and all be provided with the second spout, supporting seat bottom both sides correspond with the second spout and are provided with first slider, first slider and second spout sliding connection, just place board one side and be provided with the handle, through first slider and second spout sliding connection, be convenient for adjust fixed establishment's position to be convenient for adjust the position between two fixed establishment according to the size of steel, improved the flexibility of device.
As a further aspect of the present invention: the pressing plate is characterized in that a rubber pad is arranged at the bottom of the pressing plate, anti-skid grains are arranged at the bottom of the rubber pad, the surface of steel cannot be abraded through the arranged rubber pad, and a good fixing effect is achieved under the action of the anti-skid grains.
Compared with the prior art, the beneficial effects of the utility model are that:
1. when the device is used, steel materials to be polished are placed on the placing plate, the positions of the two fixing mechanisms are adjusted according to the length of the steel materials, the two ends of the steel materials are located in the supporting seat, then the stud is screwed to push the pressing plate to move downwards to be in close contact with the upper surface of the steel materials, so that the steel materials are fixed, the pressing plate is limited under the action of the spring, the phenomenon that the pressing plate is not fixed firmly due to looseness of the stud in the polishing process can be effectively prevented, the placing plate is pushed to enable the steel materials to be located under the polishing plate, then the hydraulic cylinder is started to enable the polishing plate to be in contact with the surface of the steel materials, then the polishing motor and the polishing motor are started, so that the polishing plate polishes the steel materials, the movable seat drives the polishing plate to move left and right through rotation of the lead screw, and the position of the polishing plate is prevented from being manually moved to, the automation is improved, the labor intensity of people is greatly reduced, and the working efficiency is improved.
2. Because fixed establishment with place board upper surface sliding connection, thereby be convenient for the device can fix the steel of equidimension not and polish, the device's utilization ratio has been improved greatly, through setting up the meshing chucking between sleeve and the pivot through first latch and the second latch, make polishing the piece and connect more firm, the phenomenon of rocking about can not taking place rotating the in-process, thereby the quality of polishing has been improved, be convenient for simultaneously between sleeve and the pivot be connected with fixed, and under locking mechanism's effect, be convenient for install and dismantle polishing piece, thereby be convenient for change polishing piece.
3. Through second slider and first spout sliding connection, be convenient for adjust the position of placing the board to be convenient for adjust the position of steel, through first slider and second spout sliding connection, be convenient for adjust fixed establishment's position, thereby be convenient for adjust the position between two fixed establishment according to the size of steel, improved the flexibility of device.
Drawings
Fig. 1 is a schematic structural diagram of a steel polishing device for building engineering.
Fig. 2 is a connection diagram of a sleeve and a rotating shaft in the steel polishing device for building engineering.
FIG. 3 is a top view of a sleeve and a rotating shaft in a steel polishing device for construction engineering.
Fig. 4 is a schematic structural diagram of a sleeve in a steel polishing device for building engineering.
Fig. 5 is a schematic structural diagram of a fixing mechanism in a steel polishing device for building engineering.
Fig. 6 is a schematic structural diagram of a placing plate in a steel polishing device for building engineering.
In the figure: 1. a work table; 2. a side dam; 3. a top plate; 4. a motor; 5. a screw rod; 6. a slide bar; 7. a movable seat; 8. mounting a plate; 9. a hydraulic cylinder; 10. a movable plate; 11. polishing the motor; 12. grinding the sheets; 13. placing the plate; 14. a fixing mechanism; 15. a first chute; 16. a sleeve; 17. a rotating shaft; 18. a first latch; 19. connecting blocks; 20. a locking post; 21. a second latch; 22. a supporting seat; 23. a first slider; 24. a stud; 25. a compression plate; 26. a spring; 27. a second slider; 28. a second runner.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 6, in an embodiment of the present invention, a steel polishing device for building engineering includes a workbench 1, side baffles 2 are disposed at middle portions of two sides of an upper surface of the workbench 1, a top plate 3 is disposed at top ends of the side baffles 2, a lead screw 5 and a slide bar 6 are disposed between the two side baffles 2, the lead screw 5 is located below the slide bar 6, the lead screw 5 is rotatably connected to the side baffles 2 through a bearing, one end of the lead screw 5 extends to an outer side of the side baffles 2 and is connected to a motor 4, a movable base 7 is connected to the lead screw 5 and the slide bar 6, a mounting plate 8 is disposed at one side of a top end of the movable base 7, a hydraulic cylinder 9 is fixedly mounted at a bottom of the mounting plate 8, a movable plate 10 is disposed at a bottom of the hydraulic cylinder 9, one side of the movable plate 10 is slidably connected to a side wall of, the bottom of the polishing motor 11 is connected with a polishing sheet 12, the upper surface of the workbench 1 is connected with a placing plate 13 in a sliding manner, and two sides of the upper surface of the placing plate 13 are both connected with fixing mechanisms 14 in a sliding manner; a sleeve 16 is arranged in the middle of the upper surface of the polishing disc 12, a rotating shaft 17 is connected to the shaft part of the polishing motor 11, second clamping teeth 21 distributed in a circumferential array are arranged on the inner wall of the bottom of the sleeve 16, first clamping teeth 18 distributed in a circumferential array are arranged on the side wall of the bottom of the rotating shaft 17, the first clamping teeth 18 are meshed with the second clamping teeth 21, and the rotating shaft 17 is fixedly connected with the sleeve 16 through a locking mechanism; fixing mechanism 14 includes supporting seat 22, supporting seat 22 is "U" type structure, supporting seat 22 upper surface middle part is provided with the screw hole, the screw hole internal rotation is connected with double-screw bolt 24, double-screw bolt 24 bottom is rotated through the bearing and is connected with pressure strip 25, the double-screw bolt 24 top is provided with the knob, be provided with spring 26 between pressure strip 25 upper surface both sides and the supporting seat 22 top inner wall.
When the device is used, steel materials to be polished are placed on the placing plate 13, the positions of the two fixing mechanisms 14 are adjusted according to the length of the steel materials, the two ends of the steel materials are located in the supporting seat 22, then the stud 24 is screwed to push the pressing plate 25 to move downwards to be in close contact with the upper surface of the steel materials, so that the steel materials are fixed, under the action of the spring 26, the pressing plate 25 is limited, the phenomenon that the steel materials are not firmly fixed due to looseness of the stud 24 in the polishing process can be effectively prevented, the placing plate 13 is pushed to enable the steel materials to be located under the polishing plate 12, then the hydraulic cylinder 9 is started, the polishing plate 12 is in contact with the surface of the steel materials, then the polishing motor 11 and the motor 4 are started, the polishing plate 12 is used for polishing the steel materials, the movable seat 7 drives the polishing plate 12 to move left and right through rotation of the screw rod 5, thereby avoid artifical manual removal polishing piece 12's position to polish, automation is improved, greatly reduced people's intensity of labour, thereby work efficiency is improved, because fixed establishment 14 with place board 13 upper surface sliding connection, thereby be convenient for the device can fix the polishing to the steel of not unidimensional size, the device's utilization ratio has been improved greatly, through setting up the meshing chucking between sleeve 16 and the pivot 17 through first latch 18 and the second latch 21, make polishing piece 12 connect more firm, the phenomenon of rocking about can not taking place in the rotation process, thereby the quality of polishing has been improved, be convenient for simultaneously sleeve 16 and pivot 17 between be connected with fixed, and under locking mechanism's effect, be convenient for install and dismantle polishing piece 12, thereby be convenient for change polishing piece 12.
The movable seat 7 is provided with the screw hole with the junction of lead screw 5, the junction of movable seat 7 and slide bar 6 is provided with the slide opening, movable seat 7 is provided with the spacing groove with fly leaf 10 junction one side, fly leaf 10 passes through stopper and spacing groove sliding connection.
Through the setting of slide opening, played spacing effect to sliding seat 7, through the cooperation between stopper and the spacing groove for fly leaf 10 is more firm.
Locking mechanism includes connecting block 19, connecting block 19 one side is provided with two locking post 20, constitutes "U" type structure between two locking post 20 and the connecting block 19, sleeve 16 all is provided with two through-holes, two with pivot 17 surface locking post 20 runs through the through-hole and swivelling joint has lock nut.
The locking and fixing between the sleeve 16 and the rotating shaft 17 are facilitated by the cooperation between the connecting block 19 and the locking column 20, so that the grinding sheet 12 can be replaced conveniently.
The utility model discloses a table top, including workstation 1, place board 13, first spout 15 is all provided with on workstation 1 upper surface both sides, place board 13 bottom both sides and first spout 15 and correspond and be provided with second slider 27, second slider 27 and first spout 15 sliding connection.
Through second slider 27 and first spout 15 sliding connection, be convenient for adjust the position of placing board 13 to be convenient for adjust the position of steel.
The two sides of the upper surface of the placing plate 13 are both provided with second sliding grooves 28, the two sides of the bottom of the supporting seat 22 are provided with first sliding blocks 23 corresponding to the second sliding grooves 28, the first sliding blocks 23 are connected with the second sliding grooves 28 in a sliding mode, and a handle is arranged on one side of the placing plate 13.
Through first slider 23 and second spout 28 sliding connection, be convenient for adjust the position of fixed establishment 14 to be convenient for adjust the position between two fixed establishment 14 according to the size of steel, improved the flexibility of device.
The bottom of the pressing plate 25 is provided with a rubber pad, and the bottom of the rubber pad is provided with anti-skid grains.
Through the rubber pad that sets up, can not cause wearing and tearing to the steel surface to under the effect of anti-skidding line, played fine fixed effect.
The utility model discloses a theory of operation is:
when the device is used, steel materials to be polished are placed on the placing plate 13, the positions of the two fixing mechanisms 14 are adjusted according to the length of the steel materials, the two ends of the steel materials are located in the supporting seat 22, then the stud 24 is screwed to push the pressing plate 25 to move downwards to be in close contact with the upper surface of the steel materials, so that the steel materials are fixed, under the action of the spring 26, the pressing plate 25 is limited, the phenomenon that the steel materials are not firmly fixed due to looseness of the stud 24 in the polishing process can be effectively prevented, the placing plate 13 is pushed to enable the steel materials to be located under the polishing plate 12, then the hydraulic cylinder 9 is started, the polishing plate 12 is in contact with the surface of the steel materials, then the polishing motor 11 and the motor 4 are started, the polishing plate 12 is used for polishing the steel materials, the movable seat 7 drives the polishing plate 12 to move left and right through rotation of the screw rod 5, thereby avoiding manual movement of the polishing sheet 12 for polishing, improving automation, greatly reducing labor intensity of people, and improving working efficiency, because the fixing mechanism 14 is connected with the upper surface of the placing plate 13 in a sliding way, the device can be used for fixing and polishing steel materials with different sizes, the utilization rate of the device is greatly improved, the sleeve 16 and the rotating shaft 17 are arranged to be meshed and clamped through the first latch 18 and the second latch 21, so that the polishing sheet 12 is more stably connected, the left-right shaking phenomenon can not occur in the rotating process, the polishing quality is improved, meanwhile, the sleeve 16 and the rotating shaft 17 are convenient to connect and fix, the polishing sheet 12 can be conveniently installed and disassembled under the action of the locking mechanism, the polishing sheet 12 can be conveniently replaced, and the movable seat 7 can be limited through the arrangement of the sliding hole, through the cooperation between stopper and the spacing groove for fly leaf 10 is more firm, through second slider 27 and first spout 15 sliding connection, is convenient for adjust the position of placing board 13, thereby is convenient for adjust the position of steel, through first slider 23 and second spout 28 sliding connection, is convenient for adjust the position of fixed establishment 14, thereby is convenient for adjust the position between two fixed establishment 14 according to the size of steel, has improved the flexibility of device.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. The utility model provides a steel grinding device for building engineering, includes workstation (1), its characterized in that, workstation (1) upper surface both sides middle part all is provided with side shield (2), side shield (2) top is provided with roof (3), two be provided with lead screw (5) and slide bar (6) between side shield (2) respectively, lead screw (5) are located the below of slide bar (6), lead screw (5) rotate with side shield (2) through the bearing and are connected, just lead screw (5) one end extends to the side shield (2) outside and is connected with motor (4), be connected with sliding seat (7) on lead screw (5) and slide bar (6), sliding seat (7) top one side is provided with mounting panel (8), mounting panel (8) bottom fixed mounting has pneumatic cylinder (9), pneumatic cylinder (9) bottom is provided with fly leaf (10), one side of the movable plate (10) is connected with the side wall of the movable seat (7) in a sliding mode, a polishing motor (11) is installed at the bottom of the movable plate (10), a polishing sheet (12) is connected to the bottom of the polishing motor (11), a placing plate (13) is connected to the upper surface of the workbench (1) in a sliding mode, and fixing mechanisms (14) are connected to two sides of the upper surface of the placing plate (13) in a sliding mode;
a sleeve (16) is arranged in the middle of the upper surface of the polishing disc (12), a rotating shaft (17) is connected to the shaft part of the polishing motor (11), second clamping teeth (21) distributed in a circumferential array are arranged on the inner wall of the bottom of the sleeve (16), first clamping teeth (18) distributed in a circumferential array are arranged on the side wall of the bottom of the rotating shaft (17), the first clamping teeth (18) are meshed with the second clamping teeth (21), and the rotating shaft (17) is fixedly connected with the sleeve (16) through a locking mechanism;
fixing mechanism (14) are including supporting seat (22), supporting seat (22) are "U" type structure, supporting seat (22) upper surface middle part is provided with the screw hole, the screw hole internal rotation is connected with double-screw bolt (24), double-screw bolt (24) bottom is rotated through the bearing and is connected with pressure strip (25), double-screw bolt (24) top is provided with the knob, be provided with spring (26) between pressure strip (25) upper surface both sides and supporting seat (22) top inner wall.
2. The steel grinding device for building engineering according to claim 1, wherein a threaded hole is formed in a joint of the movable seat (7) and the lead screw (5), a sliding hole is formed in a joint of the movable seat (7) and the sliding rod (6), a limiting groove is formed in one side of a joint of the movable seat (7) and the movable plate (10), and the movable plate (10) is slidably connected with the limiting groove through a limiting block.
3. The steel grinding device for building engineering according to claim 1, wherein the locking mechanism comprises a connecting block (19), two locking columns (20) are arranged on one side of the connecting block (19), a U-shaped structure is formed between the two locking columns (20) and the connecting block (19), two through holes are formed in the surfaces of the sleeve (16) and the rotating shaft (17), and the two locking columns (20) penetrate through the through holes and are rotatably connected with locking nuts.
4. The steel polishing device for building engineering according to claim 1, wherein first sliding grooves (15) are formed in two sides of the upper surface of the workbench (1), second sliding blocks (27) are arranged on two sides of the bottom of the placing plate (13) corresponding to the first sliding grooves (15), and the second sliding blocks (27) are connected with the first sliding grooves (15) in a sliding mode.
5. The steel grinding device for building engineering according to claim 1, wherein second sliding grooves (28) are formed in both sides of the upper surface of the placing plate (13), first sliding blocks (23) are arranged on both sides of the bottom of the supporting seat (22) corresponding to the second sliding grooves (28), the first sliding blocks (23) are connected with the second sliding grooves (28) in a sliding mode, and a handle is arranged on one side of the placing plate (13).
6. The steel polishing device for building engineering as claimed in claim 1, wherein a rubber pad is arranged at the bottom of the pressing plate (25), and anti-skid lines are arranged at the bottom of the rubber pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022021655.0U CN213004487U (en) | 2020-09-16 | 2020-09-16 | Steel material grinding device for building engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022021655.0U CN213004487U (en) | 2020-09-16 | 2020-09-16 | Steel material grinding device for building engineering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213004487U true CN213004487U (en) | 2021-04-20 |
Family
ID=75476511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022021655.0U Expired - Fee Related CN213004487U (en) | 2020-09-16 | 2020-09-16 | Steel material grinding device for building engineering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213004487U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320760A (en) * | 2022-02-25 | 2022-04-12 | 华能河南清洁能源有限公司 | Blade locking device for wind turbine generator |
| CN115194474A (en) * | 2022-07-27 | 2022-10-18 | 江苏华杰不锈钢制品有限公司 | Calibration equipment for steel processing |
-
2020
- 2020-09-16 CN CN202022021655.0U patent/CN213004487U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320760A (en) * | 2022-02-25 | 2022-04-12 | 华能河南清洁能源有限公司 | Blade locking device for wind turbine generator |
| CN115194474A (en) * | 2022-07-27 | 2022-10-18 | 江苏华杰不锈钢制品有限公司 | Calibration equipment for steel processing |
| CN115194474B (en) * | 2022-07-27 | 2023-08-25 | 江苏华杰不锈钢制品有限公司 | Calibration equipment is used in steel processing |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210420 Termination date: 20210916 |
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| CF01 | Termination of patent right due to non-payment of annual fee |