CN221275040U - Dust removal and cooling device for multifunctional crown block sliding contact line of electrolytic aluminum - Google Patents
Dust removal and cooling device for multifunctional crown block sliding contact line of electrolytic aluminum Download PDFInfo
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- CN221275040U CN221275040U CN202323111518.6U CN202323111518U CN221275040U CN 221275040 U CN221275040 U CN 221275040U CN 202323111518 U CN202323111518 U CN 202323111518U CN 221275040 U CN221275040 U CN 221275040U
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- crown block
- multifunctional
- electrolytic aluminum
- multifunctional crown
- block
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- 239000000428 dust Substances 0.000 title claims abstract description 25
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 22
- 238000001816 cooling Methods 0.000 title claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 38
- 238000004140 cleaning Methods 0.000 claims abstract description 30
- 230000017525 heat dissipation Effects 0.000 claims abstract description 25
- 238000010926 purge Methods 0.000 claims abstract description 24
- 238000004891 communication Methods 0.000 claims description 8
- 238000005452 bending Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000007664 blowing Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 5
- 238000009423 ventilation Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000004071 soot Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of multifunctional crown blocks for electrolytic aluminum, and discloses a dust removal and cooling device for a sliding contact line of the multifunctional crown block for electrolytic aluminum, which comprises the following components in part by weight; the multifunctional overhead travelling crane comprises a multifunctional overhead travelling crane, an overhead travelling crane track and a trolley line, wherein an end beam horizontal bracket is fixedly arranged at the bottom of the multifunctional overhead travelling crane; the purging mechanism is arranged at the top of the sliding contact line; and the cleaning mechanism is arranged on the side surface of the multifunctional crown block. Compared with the traditional electrolytic aluminum multifunctional crown block, the novel purging device controls the whole on-off of the purging mechanism through the electromagnetic valve, when the multifunctional crown block walks, the electromagnetic valve is opened, so that the purging mechanism starts to operate to remove dust on the surface of the trolley wire, the heat dissipation capacity of the trolley wire is fully diffused, the cooling effect on the trolley wire is achieved, the thermal expansion and bending of the trolley wire caused by overhigh temperature are reduced, the maintenance times and the workload of personnel are reduced, the safety coefficient is improved, and the safe operation of equipment is ensured.
Description
Technical Field
The utility model relates to the technical field of multifunctional crown blocks for electrolytic aluminum, in particular to a dust removal and cooling device for a sliding contact line of an multifunctional crown block for electrolytic aluminum.
Background
Along with the pushing of the new electrolysis process, the multifunctional crown block of the electrolysis workshop is frequently used, the environment of an operation area is limited, excessive dust accumulation on the surface of the trolley line often occurs, the heat dissipation quantity is poor, the dust emission of the trolley line is adjusted to be large, the environment protection is affected, the workload of personnel is large, and the danger coefficient of overhead operation is large. And the thermal expansion bending phenomenon of the trolley line when the workshop temperature is higher, thereby affecting the safe operation of the equipment. In order to solve the problems, the dedusting and cooling device is additionally arranged, the output air quantity is timely adjusted according to the workshop temperature, and the surface of the sliding contact line is dedusted and cooled, so that the sliding contact line is fast in heat dissipation, bending deformation is reduced, the workload of personnel is reduced, and unsafe conditions of personnel and equipment are avoided.
Disclosure of utility model
In order to overcome the defects of the prior art, the utility model provides the dust removal and cooling device for the sliding contact line of the multifunctional crown block for electrolytic aluminum, which has the advantages of improving the safety coefficient and ensuring the safe operation of equipment.
In order to achieve the above purpose, the present utility model provides the following technical solutions: an electrolytic aluminum multifunctional overhead travelling crane sliding contact line dust removal and cooling device comprises;
The multifunctional overhead travelling crane comprises a multifunctional overhead travelling crane, an overhead travelling crane track and a trolley line, wherein an end beam horizontal bracket is fixedly arranged at the bottom of the multifunctional overhead travelling crane;
The purging mechanism is arranged at the top of the sliding contact line;
The cleaning mechanism is arranged on the side surface of the multifunctional crown block;
The purging mechanism consists of a four-way joint, an electromagnetic valve, an air pipe, a communication pipeline and an M-shaped bracket;
the utility model discloses a cross-type air conditioner, including end beam horizontal support, cross connection, air pipe, solenoid valve, communicating pipe pipeline, M type support fixed mounting is in the inside of end beam horizontal support, solenoid valve fixed mounting is in the bottom of cross connection in end beam horizontal support, communicating pipe pipeline fixed mounting is in the side of end beam horizontal support, M type support fixed mounting is in the bottom of communicating pipe pipeline, air pipe intercommunication cross connection, communicating pipe.
As a preferable technical scheme of the utility model, the cleaning mechanism consists of a sliding hard rail, a cleaning brush, a sliding block, a rotating gear and a motor;
the cleaning brush is fixedly arranged at the top of the sliding block, the rotating gear is movably arranged at the side face of the multifunctional crown block, the motor is fixedly arranged at the side face of the multifunctional crown block, and the output shaft of the motor is movably connected with the rotating gear.
As a preferable technical scheme of the utility model, the bottom of the cleaning brush is composed of a plurality of groups of fluff, and the fluff is lighter and softer.
As a preferable technical scheme of the utility model, a first limiting block and a second limiting block are fixedly arranged on the side face of the multifunctional crown block, and the first limiting block and the second limiting block are positioned at the head and the tail of the sliding hard rail.
As a preferable technical scheme of the utility model, a heat dissipation channel is arranged on the side surface of the multifunctional crown block, and a filter screen is fixedly arranged on the surface of the heat dissipation channel.
As a preferable technical scheme of the utility model, a fixed bracket is fixedly arranged on the side surface of the multifunctional crown block, the fixed bracket is fixedly connected with a connecting pipeline, an auxiliary pulley is fixedly arranged at the bottom of the M-shaped bracket, and the auxiliary pulley is movably connected with the ground.
As a preferable technical scheme of the utility model, a fixing bracket is fixedly arranged on the side surface of the multifunctional crown block, and the top of the fixing bracket is fixedly connected with a motor.
As a preferable technical scheme of the utility model, the purging mechanism is controlled by the electromagnetic valve, when the multifunctional crown block operates, the electromagnetic valve is electrified, and when the multifunctional crown block stops operating, the electromagnetic valve is powered off, and the purging mechanism stops operating.
Compared with the prior art, the utility model has the following beneficial effects:
1. According to the utility model, the M-shaped bracket is fixed at the end beam horizontal bracket and is directly above the trolley wire and connected with the air pipe, the air path is controlled by the electromagnetic valve, the blowing mechanism is controlled by the electromagnetic valve signal for blowing ash on the trolley track, when the air pressure works, the electromagnetic valve is electrified when the multifunctional overhead travelling crane walks, the blowing communication pipeline starts to work, at the moment, dust on the surface of the trolley wire is removed, the heat dissipation capacity of the trolley wire is fully diffused, compared with the traditional electrolytic aluminum multifunctional overhead travelling crane, the novel blowing device controls the integral on-off of the blowing mechanism through the electromagnetic valve, when the multifunctional overhead travelling crane walks, the electromagnetic valve is started, the blowing mechanism starts to operate to remove dust on the surface of the trolley wire, the heat dissipation capacity of the trolley wire is fully diffused, meanwhile, the cooling effect on the trolley wire is achieved, the thermal expansion and bending of the trolley wire caused by overhigh temperature are reduced, the maintenance times and the workload of personnel are reduced, the safety coefficient is improved, and the safe operation of equipment is ensured.
2. According to the novel cleaning mechanism, the motor is started, the output shaft of the motor provides power to drive the rotating gear to rotate, so that the rotating gear drives the sliding block to reciprocate up and down on the surface of the sliding hard rail, the cleaning brush cleans dust blocked on the surface of the filter screen, compared with a traditional electrolytic aluminum multifunctional crown block, the novel cleaning mechanism is characterized in that the motor drives the rotating gear to rotate, so that the sliding block and the cleaning brush reciprocate on the surface of the sliding hard rail, the surface of the filter screen is cleaned, dust blocking in the filter screen is avoided, and the defect that the filter screen is blocked, heat dissipation failure is caused, and damage is caused due to overhigh temperature of elements in a heat dissipation channel is avoided.
Drawings
FIG. 1 is a right side view of the present utility model;
FIG. 2 is a schematic view of the back structure of the present utility model;
FIG. 3 is a left side view of the present utility model;
FIG. 4 is a schematic view of the bottom structure of the present utility model;
FIG. 5 is a schematic view of a cleaning mechanism according to the present utility model;
Fig. 6 is a schematic view of a bottom part enlarged structure of the present utility model.
In the figure: 1. multifunctional crown block; 2. crown block track; 3. a trolley line; 4. an end beam horizontal bracket; 5. an air pipe; 6. a communication pipe; 7. an M-shaped bracket; 8. an auxiliary pulley; 9. a fixed bracket; 10. a four-way joint; 11. an electromagnetic valve; 12. a heat dissipation channel; 13. a filter screen; 14. sliding the hard rail; 15. a cleaning brush; 16. a sliding block; 17. rotating the gear; 18. a motor; 19. a fixed bracket; 20. a first limiting block; 21. and a second limiting block.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1 to 6, the utility model provides a dust removal and cooling device for an electrolytic aluminum multifunctional overhead travelling crane trolley line, which comprises;
The multifunctional overhead travelling crane comprises a multifunctional overhead travelling crane 1, an overhead travelling crane track 2 and a trolley wire 3, wherein an end beam horizontal bracket 4 is fixedly arranged at the bottom of the multifunctional overhead travelling crane 1;
the blowing mechanism is arranged at the top of the sliding contact line 3;
A cleaning mechanism arranged on the side surface of the multifunctional crown block 1;
The purging mechanism consists of a four-way joint 10, an electromagnetic valve 11, an air pipe 5, a communicating pipeline 6 and an M-shaped bracket 7;
the four-way joint 10 is fixedly arranged in the end beam horizontal support 4, the electromagnetic valve 11 is fixedly arranged at the bottom of the four-way joint 10, the communicating pipeline 6 is fixedly arranged on the side face of the end beam horizontal support 4, the M-shaped support 7 is fixedly arranged at the bottom of the communicating pipeline 6, the air pipe 5 is fixedly arranged on the side face of the end beam horizontal support 4, and the air pipe 5 is communicated with the four-way joint 10 and the communicating pipeline 6.
An M-shaped bracket 7 is fixed at the position of the end beam horizontal bracket 4, is directly above the trolley wire 3 and is connected with the air pipe 5, the air passage on-off is controlled by an electromagnetic valve 11, a blowing mechanism is controlled by a signal of a cart track soot blowing electromagnetic valve 11, when the air pressure works, the electromagnetic valve 11 is electrified when the multifunctional crown block 1 walks, the blowing communication pipeline 6 starts to work in ventilation, at the moment, dust on the surface of the trolley wire is removed, and the heat dissipation capacity of the trolley wire 3 is fully diffused.
The M-shaped bracket 7 is fixed at the end beam horizontal bracket 4 and is directly above the trolley wire 3 and connected with the air pipe 5, the air path on-off is controlled by the electromagnetic valve 11, the trolley track soot blowing electromagnetic valve 11 is used for controlling the purging mechanism, when the air pressure works, the electromagnetic valve 11 is electrified when the multifunctional crown block 1 walks, the purging communication pipeline 6 starts to work by ventilation, at the moment, dust on the surface of the trolley wire is cleared, the heat dissipation capacity of the trolley wire 3 is fully diffused, compared with the traditional electrolytic aluminum multifunctional crown block, the novel purging device controls the whole on-off of the purging mechanism through the electromagnetic valve 11, when the multifunctional crown block 1 walks, the electromagnetic valve 11 is opened, the purging mechanism starts to operate to clear the dust on the surface of the trolley wire 3, the heat dissipation capacity of the trolley wire 3 is fully diffused, meanwhile, the cooling effect is achieved on the trolley wire 3, the thermal expansion bending of the trolley wire 3 caused by overhigh temperature is reduced, the maintenance times and the work capacity of personnel are reduced, the safety coefficient is improved, and the safe operation of equipment is ensured.
The cleaning mechanism consists of a sliding hard rail 14, a cleaning brush 15, a sliding block 16, a rotating gear 17 and a motor 18;
The sliding hard rail 14 is fixedly arranged on the side face of the multifunctional crown block 1, the sliding block 16 is movably arranged on the surface of the sliding hard rail 14, the cleaning brush 15 is fixedly arranged on the top of the sliding block 16, the rotating gear 17 is movably arranged on the side face of the multifunctional crown block 1, the motor 18 is fixedly arranged on the side face of the multifunctional crown block 1, and the output shaft of the motor 18 is movably connected with the rotating gear 17.
When the dust in the workshop blocks the filter screen 13, the motor 18 is started, the output shaft of the motor 18 provides power to drive the rotary gear 17 to rotate, so that the rotary gear 17 drives the sliding block 16 to reciprocate up and down on the surface of the sliding hard rail 14, the cleaning brush 15 cleans the dust blocked on the surface of the filter screen 13, and ventilation and heat dissipation of the filter screen 13 are guaranteed.
Through opening motor 18, the output shaft of motor 18 provides power and drives rotation gear 17 rotation, make rotation gear 17 drive slider 16 at the surface of sliding hard rail 14 reciprocating motion from top to bottom, make cleaning brush 15 clean the dust that filter screen 13 surface was blockked up, compare with traditional multi-functional crown block of electrolytic aluminum, novel cleaning mechanism, drive rotation gear 17 rotation through motor 18 and make slider 16 and cleaning brush 15 carry out reciprocating motion at the surface of sliding hard rail 14, clean the surface of filter screen 13, make no dust jam in the filter screen 13, avoided because the jam of filter screen 13 leads to the heat dissipation inefficacy, the component high temperature in the heat dissipation passageway 12 leads to damaging.
Wherein the bottom of the cleaning brush 15 is composed of a plurality of groups of fluff, and the fluff is light and soft.
Because the bottom of the cleaning brush 15 is composed of a plurality of groups of fluff, and the fluff is light and soft, the fluff at the bottom of the cleaning brush 15 can be conveniently bent and permeated into the filter holes on the surface of the filter screen 13, and the cleaning effect is better.
The side surface of the multifunctional crown block 1 is fixedly provided with a first limiting block 20 and a second limiting block 21, and the first limiting block 20 and the second limiting block 21 are positioned at the head and tail of the sliding hard rail 14.
The first limiting block 20 and the second limiting block 21 are fixedly arranged on the side face of the multifunctional crown block 1, and the first limiting block 20 and the second limiting block 21 are positioned at the head and tail of the sliding hard rail 14. The sliding block 16 is conveniently limited, and normal operation of the sliding block is ensured.
The side face of the multifunctional crown block 1 is provided with a heat dissipation channel 12, and a filter screen 13 is fixedly arranged on the surface of the heat dissipation channel 12.
Because the side of the multifunctional crown block 1 is provided with the heat dissipation channel 12, the surface of the heat dissipation channel 12 is fixedly provided with the filter screen 13, so that the heat dissipation of the internal elements of the multifunctional crown block 1 is facilitated.
Wherein, multi-functional crown block 1 side fixed mounting has fixed bolster 9, and fixed bolster 9 fixed connection pipeline 6, the bottom fixed mounting of M type support 7 has auxiliary pulley 8, auxiliary pulley 8 and ground swing joint.
Because the fixed support 9 is fixedly arranged on the side face of the multifunctional crown block 1, the fixed support 9 is fixedly connected with the communication pipeline 6, the auxiliary pulley 8 is fixedly arranged at the bottom of the M-shaped support 7, and the auxiliary pulley 8 is movably connected with the ground, so that the purging mechanism is conveniently supported and fixed.
Wherein, the side of multi-functional crown block 1 is fixed mounting has fixed bolster 19, and the top fixed connection motor 18 of fixed bolster 19.
Because the side surface of the multifunctional crown block 1 is fixedly provided with the fixed bracket 19, the top of the fixed bracket 19 is fixedly connected with the motor 18, the motor 18 is conveniently fixed, and the motor can be operated to drive the rotary gear 17 to normally rotate.
Wherein, the purging mechanism is controlled by solenoid valve 11, and when multi-functional crown block 1 operation, solenoid valve 11 circular telegram, multi-functional crown block 1 stop operation, solenoid valve 11 outage, purging mechanism stop operation.
Because the purging mechanism is controlled by the electromagnetic valve 11, when the multifunctional crown block 1 runs, the electromagnetic valve 11 is electrified, and when the multifunctional crown block 1 stops running, the electromagnetic valve 11 is powered off, and the purging mechanism stops running, so that the purging mechanism can be automatically started according to proper conditions.
The working principle and the using flow of the utility model are as follows:
An M-shaped bracket 7 is fixed at the position of the end beam horizontal bracket 4, is directly above the trolley wire 3 and is connected with the air pipe 5, the air passage on-off is controlled by an electromagnetic valve 11, a blowing mechanism is controlled by a signal of a cart track soot blowing electromagnetic valve 11, when the air pressure works, the electromagnetic valve 11 is electrified when the multifunctional crown block 1 walks, the blowing communication pipeline 6 starts to work in ventilation, at the moment, dust on the surface of the trolley wire is removed, and the heat dissipation capacity of the trolley wire 3 is fully diffused.
When the dust in the workshop blocks the filter screen 13, the motor 18 is started, the output shaft of the motor 18 provides power to drive the rotary gear 17 to rotate, so that the rotary gear 17 drives the sliding block 16 to reciprocate up and down on the surface of the sliding hard rail 14, the cleaning brush 15 cleans the dust blocked on the surface of the filter screen 13, and ventilation and heat dissipation of the filter screen 13 are guaranteed.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a multi-functional overhead travelling crane wiping line dust removal heat sink of electrolytic aluminum, its characterized in that: comprises the following steps of;
The multifunctional overhead travelling crane comprises a multifunctional overhead travelling crane (1), an overhead travelling crane track (2) and a trolley line (3), wherein an end beam horizontal bracket (4) is fixedly arranged at the bottom of the multifunctional overhead travelling crane (1);
The purging mechanism is arranged at the top of the sliding contact line (3);
the cleaning mechanism is arranged on the side surface of the multifunctional crown block (1);
The purging mechanism consists of a four-way joint (10), an electromagnetic valve (11), an air pipe (5), a communicating pipeline (6) and an M-shaped bracket (7);
The four-way joint (10) is fixedly arranged in the end beam horizontal support (4), the electromagnetic valve (11) is fixedly arranged at the bottom of the four-way joint (10), the communicating pipeline (6) is fixedly arranged on the side face of the end beam horizontal support (4), the M-shaped support (7) is fixedly arranged at the bottom of the communicating pipeline (6), the air pipe (5) is fixedly arranged on the side face of the end beam horizontal support (4), and the air pipe (5) is communicated with the four-way joint (10) and the communicating pipeline (6).
2. The electrolytic aluminum multifunctional crown block trolley line dedusting and cooling device as claimed in claim 1, wherein the device is characterized in that: the cleaning mechanism consists of a sliding hard rail (14), a cleaning brush (15), a sliding block (16), a rotating gear (17) and a motor (18);
The utility model discloses a multifunctional crown block, including multi-functional crown block (1), sliding hard rail (14), sliding block (16) movable mounting in the side of multi-functional crown block (1), cleaning brush (15) fixed mounting in the top of sliding block (16), rotation gear (17) movable mounting in the side of multi-functional crown block (1), motor (18) fixed mounting in the side of multi-functional crown block (1), the output shaft swing joint of motor (18) rotates gear (17).
3. The electrolytic aluminum multifunctional crown block trolley line dedusting and cooling device as claimed in claim 2, wherein: the bottom of the cleaning brush (15) is composed of a plurality of groups of fluff, and the fluff is lighter and softer.
4. The electrolytic aluminum multifunctional crown block trolley line dedusting and cooling device as claimed in claim 1, wherein the device is characterized in that: the side of the multifunctional crown block (1) is fixedly provided with a first limiting block (20) and a second limiting block (21), and the first limiting block (20) and the second limiting block (21) are positioned at the head and tail of the sliding hard rail (14).
5. The electrolytic aluminum multifunctional crown block trolley line dedusting and cooling device as claimed in claim 1, wherein the device is characterized in that: a heat dissipation channel (12) is formed in the side face of the multifunctional crown block (1), and a filter screen (13) is fixedly arranged on the surface of the heat dissipation channel (12).
6. The electrolytic aluminum multifunctional crown block trolley line dedusting and cooling device as claimed in claim 1, wherein the device is characterized in that: the multifunctional crown block is characterized in that a fixed support (9) is fixedly arranged on the side face of the multifunctional crown block (1), the fixed support (9) is fixedly connected with a communication pipeline (6), an auxiliary pulley (8) is fixedly arranged at the bottom of the M-shaped support (7), and the auxiliary pulley (8) is movably connected with the ground.
7. The electrolytic aluminum multifunctional crown block trolley line dedusting and cooling device as claimed in claim 1, wherein the device is characterized in that: the side of the multifunctional crown block (1) is fixedly provided with a fixed bracket (19), and the top of the fixed bracket (19) is fixedly connected with a motor (18).
8. The electrolytic aluminum multifunctional crown block trolley line dedusting and cooling device as claimed in claim 1, wherein the device is characterized in that: the purging mechanism is controlled by the electromagnetic valve (11), when the multifunctional crown block (1) operates, the electromagnetic valve (11) is electrified, and when the multifunctional crown block (1) stops operating, the electromagnetic valve (11) is deenergized, and the purging mechanism stops operating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323111518.6U CN221275040U (en) | 2023-11-17 | 2023-11-17 | Dust removal and cooling device for multifunctional crown block sliding contact line of electrolytic aluminum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323111518.6U CN221275040U (en) | 2023-11-17 | 2023-11-17 | Dust removal and cooling device for multifunctional crown block sliding contact line of electrolytic aluminum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221275040U true CN221275040U (en) | 2024-07-05 |
Family
ID=91694473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323111518.6U Active CN221275040U (en) | 2023-11-17 | 2023-11-17 | Dust removal and cooling device for multifunctional crown block sliding contact line of electrolytic aluminum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221275040U (en) |
-
2023
- 2023-11-17 CN CN202323111518.6U patent/CN221275040U/en active Active
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