CN217224366U - Special welding seam back chipping equipment for full penetration welding of electric power iron tower - Google Patents
Special welding seam back chipping equipment for full penetration welding of electric power iron tower Download PDFInfo
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- CN217224366U CN217224366U CN202221075895.1U CN202221075895U CN217224366U CN 217224366 U CN217224366 U CN 217224366U CN 202221075895 U CN202221075895 U CN 202221075895U CN 217224366 U CN217224366 U CN 217224366U
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Abstract
The utility model provides a special welding seam back chipping equipment is used to full penetration welding of electric power iron tower. The electric power iron tower is full penetration welding with special welding seam back chipping equipment includes: the device comprises a workbench, wherein four support columns are fixedly mounted at the top of the workbench, a top plate is fixedly mounted at the top ends of the four support columns, and a moving mechanism, a back chipping mechanism and an impurity removing mechanism are arranged on the top plate; the moving mechanism comprises two first hydraulic cylinders, a first lifting plate, a mounting plate, two inclined fixing plates, two first rotating shafts, two conveying wheels, two turbines, two second rotating shafts, two worms, two first bevel gears, a first motor and a second bevel gear, and the two first hydraulic cylinders are fixedly mounted at the bottom of the top plate. The utility model provides a special welding seam back chipping equipment is used to full penetration welding of electric power iron tower can be simply effectual remove the angle steel and carry out back chipping work to can concentrate the advantage of clearance to the waste material that the back chipping produced.
Description
Technical Field
The utility model belongs to the technical field of the welding seam back chipping, especially, relate to a special welding seam back chipping equipment is used to full penetration welding of electric power iron tower.
Background
To the higher two-sided welded forming's of quality requirement full penetration welding seam, before welding one side and welding to the reverse side, use the process of appropriate instrument from the reverse side to the welding seam root clearance of accomplishing, be called "back chipping", among the relevant art, disclose a back iron back chipping equipment, relate to the field of back iron processing, it includes back chipping machine main part, and back chipping machine main part includes feed inlet and discharge gate, discharge gate department is provided with the supporting mechanism who accepts the back iron, and the supporting mechanism lateral part is provided with the collection mechanism who collects the back iron, and the opposite side that the supporting structure kept away from the collection mechanism is provided with the pushing mechanism who promotes the back iron and move to collection mechanism, and it has reduced the staff and has waited the artifical frequent transport amount of labour of back iron ejection of compact, reduces staff's intensity of labour, improves production efficiency's effect.
However, the above-mentioned structure has a disadvantage that the apparatus cannot clean the waste generated by the back chipping operation, and an additional process is required to clean the waste after the back chipping operation.
Therefore, a new special welding seam back chipping device for full penetration welding of the electric iron tower is needed to be provided to solve the technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem provide a can be simply effectual remove the angle steel and carry out back chipping work to can concentrate the electric power iron tower that the clearance was used special welding seam back chipping equipment to the waste material that the back chipping produced.
In order to solve the technical problem, the utility model provides an electric power iron tower is full penetration welding with special welding seam back chipping equipment includes: the device comprises a workbench, wherein four support columns are fixedly mounted at the top of the workbench, top plates are fixedly mounted at the top ends of the four support columns, and a moving mechanism, a back chipping mechanism and an impurity removing mechanism are arranged on the top plates;
the moving mechanism comprises two first hydraulic cylinders, a first lifting plate, a mounting plate, two inclined fixing plates, two first rotating shafts, two conveying wheels, two turbines, two second rotating shafts, two worms, two first bevel gears, a first motor and a second bevel gear, wherein the two first hydraulic cylinders are fixedly mounted at the bottom of the top plate, the first lifting plate is fixedly mounted on output shafts of the two first hydraulic cylinders, the mounting plate is arranged below the first lifting plate, the two inclined fixing plates are fixedly mounted at the bottom of the mounting plate, the two first rotating shafts are respectively rotatably mounted on the two inclined fixing plates, the two conveying wheels are respectively rotatably mounted at one ends of the two first rotating shafts, the two turbines are respectively fixedly mounted at one ends of the two first rotating shafts, and the two second rotating shafts are respectively rotatably mounted on the mounting plate, the two worms are fixedly arranged at one ends of the two second rotating shafts respectively, the two worm wheels are meshed with the two worms respectively, the two first bevel gears are fixedly arranged at one ends of the two second rotating shafts respectively, the first motor is fixedly arranged at the top of the mounting plate, the second bevel gear is fixedly arranged on an output shaft of the first motor, and the second bevel gear is meshed with the two first bevel gears respectively;
the back chipping mechanism comprises a second lifting plate, a threaded rod, an internal thread sleeve, a second motor, a circular gear, a gear ring, a buffer plate, two strip-shaped fixing plates, a third rotating shaft, a third motor and a grinding wheel, the second lifting plate is arranged below the top plate, the threaded rod is fixedly arranged at the top of the second lifting plate and penetrates through the top plate, the internal thread sleeve is sleeved on the threaded rod in a threaded manner, the internal thread sleeve is rotatably connected with the top plate, the second motor is fixedly arranged at the top of the top plate, the circular gear is fixedly arranged on an output shaft of the second motor, the gear ring is fixedly sleeved on the internal thread sleeve, the circular gear is meshed with the gear ring, the buffer plate is arranged below the second lifting plate, the two strip-shaped fixing plates are fixedly arranged at the bottom of the buffer plate, and the third rotating shaft is rotatably arranged on the two strip-shaped fixing plates, the third motor is fixedly installed on the outer wall of one side of the corresponding strip-shaped fixing plate, an output shaft of the third motor is fixedly connected with one end of a third rotating shaft, and the grinding wheel is fixedly sleeved on the third rotating shaft.
As a further scheme of the utility model, edulcoration mechanism rose box, fan, filter, two second pneumatic cylinders, third lifter plate, hose, connecting pipe and dust absorption head, rose box fixed mounting is at the top of roof, fan fixed mounting is at the top of roof, the air inlet end and the rose box fixed connection of fan, filter fixed mounting is in the rose box, two the equal fixed mounting of second pneumatic cylinder is in the bottom of roof, third lifter plate fixed mounting is on the output shaft of two second pneumatic cylinders, the hose sets up the top at the third lifter plate, connecting pipe fixed mounting is on the rose box, the bottom and the hose fixed connection of connecting pipe, dust absorption head fixed mounting is on the third lifter plate, the top and the hose fixed connection of dust absorption head.
As a further scheme of the utility model, the top fixed mounting of workstation has two slope extension boards, two all rotate on the slope extension board and install a plurality of backing rolls.
As a further scheme of the utility model, the bottom of second lifter plate is provided with a plurality of buffer gear, buffer gear includes telescopic link and buffer spring, telescopic link fixed mounting is at the top of buffer plate, the top of telescopic link and the bottom fixed connection of second lifter plate, the buffer spring cover is established on the telescopic link, buffer spring's top and the bottom fixed connection of second lifter plate, buffer spring's bottom and the top fixed connection of buffer plate.
As a further scheme of the utility model, the top fixed mounting of second lifter plate has two spacing slide bars, two spacing slide bar all runs through the roof and all with roof sliding connection.
As a further aspect of the present invention, there are four dead levers, four, fixed on the top of the mounting plate the top of the dead lever is all fixed with the bottom of the first lifting plate.
Compared with the prior art, the utility model provides an electric power iron tower is full to be welded with special welding seam back chipping equipment has following beneficial effect:
1. the utility model has the advantages that the moving mechanism is arranged, so that the angle steel can be simply and effectively moved, and the back chipping work can be continuously carried out;
2. the utility model has the advantages that the back chipping mechanism is arranged, so that the back chipping work can be simply and effectively carried out on the angle steel, and the back chipping mechanism has the advantages of high back chipping speed and good effect;
3. the utility model discloses a set up edulcoration mechanism for can be simply effectual carry out the gettering to the waste material that produces when back chipping, and concentrate filtration treatment to it.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of the front sectional view of the special welding seam back chipping device for the full penetration welding of the electric power iron tower of the present invention;
FIG. 2 is an enlarged schematic view of portion A of FIG. 1;
FIG. 3 is a schematic view of a partial side view of a special weld back chipping device for full penetration welding of an electric power iron tower according to the present invention;
FIG. 4 is a schematic structural view of a back gouging mechanism in the special welding seam back gouging device for full penetration welding of the electric power iron tower;
fig. 5 is an assembly view of the middle and second hydraulic cylinders, the third lifting plate, the hose, the connecting pipe and the dust collecting head of the present invention.
In the figure: 1. a work table; 2. a support column; 3. a top plate; 4. a first hydraulic cylinder; 5. a first lifter plate; 6. mounting a plate; 7. inclining the fixing plate; 8. a first rotating shaft; 9. a transfer wheel; 10. a turbine; 11. a second rotating shaft; 12. a worm; 13. a first bevel gear; 14. a first motor; 15. a second bevel gear; 16. a second lifter plate; 17. a threaded rod; 18. an internally threaded sleeve; 19. a second motor; 20. a circular gear; 21. a ring gear; 22. a buffer plate; 23. a strip-shaped fixing plate; 24. a third rotating shaft; 25. a third motor; 26. a grinding wheel; 27. a filter box; 28. a fan; 29. a filter plate; 30. a second hydraulic cylinder; 31. a third lifter plate; 32. a hose; 33. a connecting pipe; 34. a dust suction head.
Detailed Description
Please refer to fig. 1 to 5, wherein fig. 1 is a schematic front sectional view of the special weld back chipping device for full penetration welding of the electric iron tower of the present invention; FIG. 2 is an enlarged schematic view of portion A of FIG. 1; FIG. 3 is a schematic view of a partial side view of a special weld back chipping device for full penetration welding of an electric power iron tower according to the present invention; FIG. 4 is a schematic structural view of a back gouging mechanism in the special welding seam back gouging device for full penetration welding of the electric power iron tower; fig. 5 is an assembly view of the middle and second hydraulic cylinders, the third lifting plate, the hose, the connecting pipe and the dust collecting head of the present invention. The full penetration welding of electric power iron tower includes with special welding seam back chipping equipment: the device comprises a workbench 1, wherein four support columns 2 are fixedly mounted at the top of the workbench 1, a top plate 3 is fixedly mounted at the top ends of the four support columns 2, and a moving mechanism, a back chipping mechanism and an impurity removing mechanism are arranged on the top plate 3;
the moving mechanism comprises two first hydraulic cylinders 4, a first lifting plate 5, a mounting plate 6, two inclined fixing plates 7, two first rotating shafts 8, two transmission wheels 9, two worm wheels 10, two second rotating shafts 11, two worms 12, two first bevel gears 13, a first motor 14 and a second bevel gear 15, wherein the two first hydraulic cylinders 4 are fixedly mounted at the bottom of the top plate 3, the first lifting plate 5 is fixedly mounted on output shafts of the two first hydraulic cylinders 4, the mounting plate 6 is arranged below the first lifting plate 5, the two inclined fixing plates 7 are fixedly mounted at the bottom of the mounting plate 6, the two first rotating shafts 8 are respectively rotatably mounted on the two inclined fixing plates 7, the two transmission wheels 9 are respectively rotatably mounted at one end of the two first rotating shafts 8, and the two worm wheels 10 are respectively fixedly mounted at one end of the two first rotating shafts 8, the two second rotating shafts 11 are rotatably mounted on the mounting plate 6, the two worms 12 are respectively fixedly mounted at one end of the two second rotating shafts 11, the two worm wheels 10 are respectively engaged with the two worms 12, the two first bevel gears 13 are respectively fixedly mounted at one end of the two second rotating shafts 11, the first motor 14 is fixedly mounted at the top of the mounting plate 6, the second bevel gear 15 is fixedly mounted on an output shaft of the first motor 14, and the second bevel gear 15 is respectively engaged with the two first bevel gears 13;
the back chipping mechanism comprises a second lifting plate 16, a threaded rod 17, an internal thread sleeve 18, a second motor 19, a circular gear 20, a gear ring 21, a buffer plate 22, two bar-shaped fixing plates 23, a third rotating shaft 24, a third motor 25 and a grinding wheel 26, wherein the second lifting plate 16 is arranged below the top plate 3, the threaded rod 17 is fixedly arranged at the top of the second lifting plate 16, the threaded rod 17 penetrates through the top plate 3, the internal thread sleeve 18 is sleeved on the threaded rod 17 in a threaded manner, the internal thread sleeve 18 is rotatably connected with the top plate 3, the second motor 19 is fixedly arranged at the top of the top plate 3, the circular gear 20 is fixedly arranged on an output shaft of the second motor 19, the gear ring 21 is fixedly sleeved on the internal thread sleeve 18, the circular gear 20 is meshed with the gear ring 21, the buffer plate 22 is arranged below the second lifting plate 16, and the bar-shaped fixing plates 23 are both fixedly arranged at the bottom of the buffer plate 22, the third rotating shaft 24 is rotatably mounted on the two strip-shaped fixing plates 23, the third motor 25 is fixedly mounted on the outer wall of one side of the corresponding strip-shaped fixing plate 23, the output shaft of the third motor 25 is fixedly connected with one end of the third rotating shaft 24, and the grinding wheel 26 is fixedly sleeved on the third rotating shaft 24.
As shown in fig. 3 and fig. 5, the filter box 27 of the impurity removing mechanism, the fan 28, the filter plate 29, the two second hydraulic cylinders 30, the third lifting plate 31, the hose 32, the connecting pipe 33 and the dust suction head 34, the filter box 27 is fixedly arranged on the top of the top plate 3, the fan 28 is fixedly arranged on the top of the top plate 3, the air inlet end of the fan 28 is fixedly connected with the filter box 27, the filter plate 29 is fixedly arranged in the filter box 27, the two second hydraulic cylinders 30 are both fixedly arranged at the bottom of the top plate 3, the third lifting plate 31 is fixedly arranged on the output shafts of the two second hydraulic cylinders 30, the hose 32 is arranged above the third lifting plate 31, the connecting pipe 33 is fixedly arranged on the filter tank 27, the bottom end of the connecting pipe 33 is fixedly connected with the hose 32, the dust collection head 34 is fixedly arranged on the third lifting plate 31, and the top end of the dust collection head 34 is fixedly connected with the hose 32;
through setting up edulcoration mechanism for can be simple effectual the waste material that produces when back chipping is absorbed, and concentrate filtration treatment to it.
As shown in fig. 1, two inclined support plates are fixedly mounted at the top of the workbench 1, and a plurality of support rollers are rotatably mounted on each of the two inclined support plates;
through setting up slope extension board and bracing piece for can place the angle steel simply effectually, and be convenient for it removes.
As shown in fig. 3 and 4, the bottom of second lifter plate 16 is provided with a plurality of buffer gear, buffer gear includes telescopic link and buffer spring, telescopic link fixed mounting is at the top of buffer plate 22, the top of telescopic link and the bottom fixed connection of second lifter plate 16, the buffer spring cover is established on the telescopic link, buffer spring's top and the bottom fixed connection of second lifter plate 16, buffer spring's bottom and buffer plate 22's top fixed connection.
Through setting up buffer gear for can be simple effectual cushion grinding wheel 26 after the contact angle steel, avoid its damage.
As shown in fig. 4, two limiting slide bars are fixedly mounted at the top of the second lifting plate 16, and both the two limiting slide bars penetrate through the top plate 3 and are slidably connected with the top plate 3;
through setting up spacing slide bar for can be simple effectual restrict second lifter plate 16, avoid second lifter plate 16 and threaded rod 17 to follow internal thread sleeve 18 and rotate.
As shown in fig. 1 to 3, four fixing rods are fixedly mounted at the top of the mounting plate 6, and the top ends of the four fixing rods are fixedly connected with the bottom of the first lifting plate 5;
by providing the fixing rod, it is possible to fix the mounting plate 6 simply and effectively, and to reserve an installation space for the first bevel gear 13, the first motor 14, and the second bevel gear 15.
The utility model provides an electric power iron tower is full penetration welding as follows with the theory of operation of special welding seam back chipping equipment:
the first step is as follows: when the angle steel needs to be back-rooted, the angle steel is placed on a supporting roll, a first hydraulic cylinder 4 is started, the first hydraulic cylinder 4 drives a conveying wheel 9 to move downwards, the conveying wheel 9 is made to contact with the angle steel, a first motor 14 is started, the first motor 14 drives a second bevel gear 15 to rotate, the second bevel gear 15 drives two first bevel gears 13 to rotate, the first bevel gear 13 drives a second rotating shaft 11 to rotate, the second rotating shaft 11 drives a worm 12 to rotate, the worm 12 drives a turbine 10 to rotate, the turbine 10 drives a first rotating shaft 8 to rotate, and the first rotating shaft 8 drives the conveying wheel 9 to rotate, so that the angle steel is moved;
the second step is as follows: at the moment, the second motor 19 is started, the second motor 19 drives the circular gear 20 to rotate, the circular gear 20 drives the gear ring 21 to rotate, the gear ring 21 drives the internal thread sleeve 18 to rotate, the internal thread sleeve 18 drives the threaded rod 17 to move downwards, the threaded rod 17 drives the second lifting plate 16 to move downwards, so that the grinding wheel 26 is driven to move downwards, the grinding wheel 26 is made to contact with the angle steel, the third motor 25 is started, the third motor 25 drives the third rotating shaft 24 to rotate, and the third rotating shaft 24 drives the grinding wheel 26 to rotate, so that the angle steel is subjected to back chipping;
the third step: when the root is cleared, waste residues are generated, the second hydraulic cylinder 30 is started, the second hydraulic cylinder 30 drives the third lifting plate 31 to move downwards, the third lifting plate 31 drives the dust suction head 34 to be close to the angle steel, the fan 28 is started, the fan 28 sucks the waste residues into the filter box 27 through the dust suction head 34, the hose 32 and the connecting pipe 33, and the filter plate 29 can filter the waste residues, so that the generated waste residues are taken out.
It should be noted that the device structure and the accompanying drawings of the present invention mainly describe the principle of the present invention, and in the design principle, the settings of the power mechanism, the power supply system, the control system, etc. of the device are not completely described, and on the premise that the skilled person understands the principle of the present invention, the details of the power mechanism, the power supply system, and the control system can be clearly known, the control mode of the application file is automatically controlled by the controller, and the control circuit of the controller can be realized by simple programming of the skilled person in the art;
the standard parts used in the method can be purchased from the market, and can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts conventional means such as mature bolts, rivets, welding and the like in the prior art, the machines, parts and equipment adopt conventional models in the prior art, and the structure and the principle of the parts known by the skilled person can be known by technical manuals or conventional experimental methods.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made herein without departing from the principles and spirit of the invention, and it is intended that in other related fields of technology, the scope of the invention be limited only by the claims and their equivalents, all of which are intended to be covered by the scope of this invention.
Claims (6)
1. The utility model provides an electric power iron tower is full penetration welding with special welding seam back chipping equipment which characterized in that includes:
the device comprises a workbench, wherein four support columns are fixedly mounted at the top of the workbench, a top plate is fixedly mounted at the top ends of the four support columns, and a moving mechanism, a back chipping mechanism and an impurity removing mechanism are arranged on the top plate;
the moving mechanism comprises two first hydraulic cylinders, a first lifting plate, a mounting plate, two inclined fixing plates, two first rotating shafts, two conveying wheels, two turbines, two second rotating shafts, two worms, two first bevel gears, a first motor and a second bevel gear, wherein the two first hydraulic cylinders are fixedly mounted at the bottom of the top plate, the first lifting plate is fixedly mounted on output shafts of the two first hydraulic cylinders, the mounting plate is arranged below the first lifting plate, the two inclined fixing plates are fixedly mounted at the bottom of the mounting plate, the two first rotating shafts are respectively rotatably mounted on the two inclined fixing plates, the two conveying wheels are respectively rotatably mounted at one ends of the two first rotating shafts, the two turbines are respectively fixedly mounted at one ends of the two first rotating shafts, and the two second rotating shafts are respectively rotatably mounted on the mounting plate, the two worms are fixedly arranged at one ends of the two second rotating shafts respectively, the two worm wheels are meshed with the two worms respectively, the two first bevel gears are fixedly arranged at one ends of the two second rotating shafts respectively, the first motor is fixedly arranged at the top of the mounting plate, the second bevel gear is fixedly arranged on an output shaft of the first motor, and the second bevel gear is meshed with the two first bevel gears respectively;
the back chipping mechanism comprises a second lifting plate, a threaded rod, an internal thread sleeve, a second motor, a circular gear, a gear ring, a buffer plate, two strip-shaped fixing plates, a third rotating shaft, a third motor and a grinding wheel, the second lifting plate is arranged below the top plate, the threaded rod is fixedly arranged at the top of the second lifting plate and penetrates through the top plate, the internal thread sleeve is sleeved on the threaded rod in a threaded manner, the internal thread sleeve is rotatably connected with the top plate, the second motor is fixedly arranged at the top of the top plate, the circular gear is fixedly arranged on an output shaft of the second motor, the gear ring is fixedly sleeved on the internal thread sleeve, the circular gear is meshed with the gear ring, the buffer plate is arranged below the second lifting plate, the two strip-shaped fixing plates are fixedly arranged at the bottom of the buffer plate, and the third rotating shaft is rotatably arranged on the two strip-shaped fixing plates, the third motor is fixedly installed on the outer wall of one side of the corresponding strip-shaped fixing plate, an output shaft of the third motor is fixedly connected with one end of a third rotating shaft, and the grinding wheel is fixedly sleeved on the third rotating shaft.
2. The special welding seam back chipping device for the full penetration welding of the electric iron tower according to claim 1, characterized in that: impurity removal mechanism rose box, fan, filter, two second pneumatic cylinders, third lifter plate, hose, connecting pipe and dust absorption head, rose box fixed mounting is at the top of roof, fan fixed mounting is at the top of roof, the air inlet end and the rose box fixed connection of fan, filter fixed mounting is in the rose box, two the equal fixed mounting of second pneumatic cylinder is in the bottom of roof, third lifter plate fixed mounting is on the output shaft of two second pneumatic cylinders, the hose sets up the top at the third lifter plate, connecting pipe fixed mounting is on the rose box, the bottom and the hose fixed connection of connecting pipe, dust absorption head fixed mounting is on the third lifter plate, the top and the hose fixed connection of dust absorption head.
3. The special welding line back chipping equipment for full penetration welding of the electric power iron tower according to claim 1, characterized in that: the top of the workbench is fixedly provided with two inclined support plates, and the two inclined support plates are rotatably provided with a plurality of supporting rollers.
4. The special welding line back chipping equipment for full penetration welding of the electric power iron tower according to claim 1, characterized in that: the bottom of second lifter plate is provided with a plurality of buffer gear, buffer gear includes telescopic link and buffer spring, telescopic link fixed mounting is at the top of buffer plate, the top of telescopic link and the bottom fixed connection of second lifter plate, the buffer spring cover is established on the telescopic link, buffer spring's top and the bottom fixed connection of second lifter plate, buffer spring's bottom and the top fixed connection of buffer plate.
5. The special welding line back chipping equipment for full penetration welding of the electric power iron tower according to claim 1, characterized in that: the top fixed mounting of second lifter plate has two spacing slide bars, two spacing slide bar all runs through the roof and all with roof sliding connection.
6. The special welding line back chipping equipment for full penetration welding of the electric power iron tower according to claim 1, characterized in that: the top fixed mounting of mounting panel has four dead levers, four the top of dead lever all with the bottom fixed connection of first lifter plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221075895.1U CN217224366U (en) | 2022-05-07 | 2022-05-07 | Special welding seam back chipping equipment for full penetration welding of electric power iron tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221075895.1U CN217224366U (en) | 2022-05-07 | 2022-05-07 | Special welding seam back chipping equipment for full penetration welding of electric power iron tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217224366U true CN217224366U (en) | 2022-08-19 |
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ID=82822549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221075895.1U Active CN217224366U (en) | 2022-05-07 | 2022-05-07 | Special welding seam back chipping equipment for full penetration welding of electric power iron tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217224366U (en) |
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2022
- 2022-05-07 CN CN202221075895.1U patent/CN217224366U/en active Active
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