CN214420148U - Heavy truck tire heat radiation structure - Google Patents
Heavy truck tire heat radiation structure Download PDFInfo
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- CN214420148U CN214420148U CN202120300731.3U CN202120300731U CN214420148U CN 214420148 U CN214420148 U CN 214420148U CN 202120300731 U CN202120300731 U CN 202120300731U CN 214420148 U CN214420148 U CN 214420148U
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Abstract
The utility model discloses a heavy truck tire heat radiation structure, connecting rod and the fixed connection in the loading case at frame top including frame, locomotive, fixed connection in the fixed plate of locomotive bottom, connection fixed plate and frame, the first link of bottom fixedly connected with of fixed plate, the front of first link is rotated through first pivot and is connected with the front wheel group, just be located the first heat radiation structure of top fixedly connected with of front wheel group between the bottom of fixed plate and frame, first heat radiation structure includes second heat exchanger and two mounting panels that dispel the heat. The utility model discloses a second shower nozzle of installation on the second cooling tube sprays the water source to the preceding tire tread of front wheel group and carries out the heat absorption heat dissipation, and second heat dissipation cover is semi-arc, evenly sprays around the upper surface of front wheel group, has increased and has sprayed the area to improve the radiating efficiency to the front wheel tire, prevent that the vehicle from high temperature weather, the phenomenon of high temperature blowing out appears in high-speed going, improved driver's safety of traveling.
Description
Technical Field
The utility model relates to a heavy truck tire heat dissipation technical field specifically is a heavy truck tire heat radiation structure.
Background
The heavy truck is called a heavy truck and is called a genuine, traditional and informal heavy truck and semi-trailer tractor, and includes various special vehicles (such as a sprinkler, a fire truck, a road cleaning vehicle, an oil tank truck, a mixer truck and the like), a dump truck (such as a soil hauling truck and all having a lifter), trucks (for freight, including cattle and the like) and rare off-road vehicles (for military use) which are seen on roads.
In long-distance freight transportation, when a current existing heavy truck runs for a long time in high-temperature weather, the ground surface temperature is too high, so that the surface temperature of a tire is too high, the friction force between the tire and the ground can be increased due to the weight of loaded goods, the surface of the tire can also generate heat, the tire is blown out in the running process due to the high temperature, the running safety of a driver is reduced, and the freight transportation efficiency is reduced due to the replacement of the tire.
Therefore, it is necessary to provide a heat dissipation structure for a heavy truck tire to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a heavy truck tire heat radiation structure to solve the problem that prior art travel in-process can't dispel the heat the cooling to the tire surface.
In order to achieve the above object, the utility model provides a following technical scheme: a heavy truck tire heat dissipation structure comprises a truck frame, a truck head, a fixed plate fixedly connected to the bottom of the truck head, a connecting rod for connecting the fixed plate and the truck frame, and a loading box fixedly connected to the top of the truck frame, wherein the bottom of the fixed plate is fixedly connected with a first connecting frame, the front of the first connecting frame is rotatably connected with a front wheel set through a first rotating shaft, a first heat dissipation structure is fixedly connected between the fixed plate and the bottom of the truck frame and above the front wheel set, the first heat dissipation structure comprises a second heat dissipation cover and two mounting plates, the back of the second heat dissipation cover is fixedly connected with the front of the first connecting frame, the two mounting plates are respectively and fixedly connected to the bottom of the fixed plate and the bottom of the truck frame, connecting shafts are fixedly connected to the bottoms of the two mounting plates, a bearing plate is arranged between the bottom ends of the two connecting shafts, and the two connecting shafts are both rotatably connected with the bearing plate, the bottom of the bearing plate is fixedly connected with a second water tank, the left side of the second water tank is fixedly connected with a second condensate pump, the water inlet end of the second condensate pump is communicated with a second water inlet pipe, the bottom end of the second water inlet pipe is communicated with the left side of the second water tank, the water outlet end of the second condensate pump is communicated with a second water outlet pipe, one end of the second water outlet pipe is communicated with a flexible hose, one end of the flexible hose is communicated with a connecting pipe, a second circulation cavity is formed in the second heat dissipation cover, one end of the connecting pipe penetrates through the top of the second heat dissipation cover and extends into the second heat dissipation cover, one end, located in the second heat dissipation cover, of the connecting pipe is communicated with the second circulation cavity, second radiating pipes communicated with the second circulation cavity are evenly arranged on the inner surface of the second heat dissipation cover, and one ends, far away from the second heat dissipation cover, of the second radiating pipes are communicated with a second spray head, the top on the right side of the second water tank is communicated with a second water adding pipe, and the top end of the second water adding pipe is in threaded connection with a second threaded cover.
Preferably, the both sides of frame bottom all are provided with two second links, the front of second link is rotated through the second pivot and is connected with two rear wheel groups, the top of frame just is located the first water tank of the positive fixedly connected with of loading case, the first condensate pump of the equal fixedly connected with in both sides of first water tank, two the end of intaking of first condensate pump all communicates there is first inlet tube, two the one end of first inlet tube all communicates there is the right angle pipe, two the inside that first water tank just extended to first water tank is all run through to the one end of right angle pipe, two the water outlet end of first condensate pump all communicates there is first outlet pipe.
Preferably, the bottom ends of the two first water outlet pipes penetrate through the frame and extend to the bottom of the frame, the bottom ends of the two second connecting frames are fixedly connected with a second heat dissipation structure between the front faces of the two second connecting frames and located on the first water outlet pipes, the second heat dissipation structure comprises two first heat dissipation covers, and the two first heat dissipation covers are fixedly connected to the front faces of the two second connecting frames respectively.
Preferably, first circulation cavities are formed in the two first heat dissipation covers, and a bending pipe communicated with the two first circulation cavities is arranged between the tops of the two first heat dissipation covers.
Preferably, the inner surfaces of the two first radiating covers are uniformly communicated with first radiating pipes, and one ends, far away from the first radiating covers, of the first radiating pipes are communicated with first nozzles.
Preferably, the top intercommunication of first water tank has first filler pipe, the top threaded connection of first filler pipe has first thread cover 6, the top of frame just is located two fixed plates of the equal fixedly connected with in both sides at the positive both sides of loading case and the back, two rotate between the relative one side of fixed plate and be connected with the lead screw, two in addition fixedly connected with slide bar between the relative one side of fixed plate, the surface of lead screw and slide bar is all overlapped and is equipped with the transmission piece, the top cover of loading case is equipped with waterproof canopy, one the left side fixedly connected with motor case of fixed plate, the inside fixedly connected with motor of motor case, one is run through in proper order to the one end of lead screw fixed plate and motor case just extend to the inside of motor case.
Preferably, the one end that the lead screw is located the motor incasement portion is connected with the output shaft transmission of motor, the left side of waterproof canopy bottom and the left side fixed connection who loads the roof portion, waterproof canopy bottom right side all with two the top fixed connection of transmission piece, one transmission piece and lead screw threaded connection, another transmission piece and slide bar sliding connection.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) when the front wheel needs to be cooled, the second condensation pump is started to pump the water source in the second water tank through the second water inlet pipe for condensation and cooling, then the water is delivered to the flexible hoses through the second water outlet pipes, the flexible hoses deliver the water source into the connecting pipes, the connecting pipes deliver the water source to the interiors of the second radiating pipes through the second circulation cavities, the water source is sprayed to the front tire tread of the front wheel set through the second spray head arranged on the second radiating pipe for heat absorption and radiation, the second radiating cover is in a semi-arc shape and is uniformly sprayed around the upper surface of the front wheel set, the spraying area is increased, therefore, the heat dissipation efficiency of the front wheel tire is improved, the phenomenon that the tire is blown out at high temperature in high-temperature weather and high-speed running of the vehicle is prevented, the running safety of a driver is improved, the tire does not need to be replaced and maintained periodically, and the freight efficiency is improved.
(2) This heavy truck tire heat radiation structure, when the rear wheel needs the cooling, through starting two first condensate pumps and extracting the water source in the first water tank through first inlet tube and right angle pipe, after the condensation cooling, inside two second heat radiation structure's the bending pipe of rethread two first outlet pipes transport, the pipe of bending is carried the water source and is given two first heat dissipation cover inside first circulation intracavity portions, carry the water source to each first cooling tube department, spray to rear wheel group tire tread through first shower nozzle, carry out the heat absorption heat dissipation, prevent that high temperature weather from traveling long-distance leads to the tire high temperature, cause the phenomenon of blowing out, first heat dissipation cover is half arc, evenly spray around the upper surface of rear wheel group, the front and back wheel separately cools down, can open the heat dissipation according to the user demand, improve the heat dissipation convenience.
(3) This heavy truck tire heat radiation structure, when the inside water source of first water tank needs the supply, first thread cover is twisted off to the accessible, open first filler pipe, carry out the water source supply to first water tank inside, when needs carry out the water source supply to second water tank inside, the second thread cover is twisted off to the accessible, open the second filler pipe, carry out the water source supply to the inside of second water tank, the water source supply is convenient, heat abstractor life is longer, heavy truck is when the turn, the angle between locomotive and the frame changes, the expansion hose can be stretched along with the change of angle, guarantee that the front wheel can normally dispel the heat.
Drawings
Fig. 1 is a schematic structural view of a preferred embodiment of a heat dissipation structure for a heavy truck tire according to the present invention;
fig. 2 is a schematic structural view of the first heat dissipation structure shown in fig. 1;
FIG. 3 is an enlarged view of the structure shown at A in FIG. 2;
FIG. 4 is an enlarged view of the structure shown at B in FIG. 1;
fig. 5 is a schematic structural view of the second heat dissipation structure shown in fig. 1;
FIG. 6 is an enlarged view of the structure shown in FIG. 5 at C;
fig. 7 is a schematic plan view showing the structure of the waterproof shed shown in fig. 1.
In the figure: 1. a frame; 2. a connecting rod; 3. a fixing plate; 4. a headstock; 5. a loading bin; 6. a first connecting frame; 7. a first rotating shaft; 8. a front wheel set; 9. a first heat dissipation structure; 10. a second link frame; 11. a second rotating shaft; 12. a rear wheel set; 13. a first water tank; 14. a first condensate pump; 15. a first water inlet pipe; 16. a right-angled tube; 17. a first water outlet pipe; 18. a second heat dissipation structure; 19. a first water adding pipe; 20. a first threaded cap; 21. a fixing plate; 22. a screw rod; 23. a motor case; 24. a motor; 25. a waterproof shed; 26. a transmission block; 27. a slide bar; 181. a first heat dissipation cover; 182. a first flow-through chamber; 183. bending the pipe; 184. a first radiating pipe; 185. a first nozzle; 901. a second heat dissipation cover; 902. mounting a plate; 903. a connecting shaft; 904. a bearing plate; 905. a second water tank; 906. a second condensate pump; 907. a second water outlet pipe; 908. a second water inlet pipe; 909. a flexible hose; 910. a connecting pipe; 911. a second flow-through chamber; 912. a second heat dissipation pipe; 913. a second nozzle; 914. a second water adding pipe; 915. a second threaded cap.
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. 1-7, the present invention provides an embodiment: a heavy truck tire heat dissipation structure comprises a truck frame 1, a truck head 4, a fixing plate 3 fixedly connected to the bottom of the truck head 4, a connecting rod 2 connecting the fixing plate 3 and the truck frame 1, and a loading box 5 fixedly connected to the top of the truck frame 1, wherein the bottom of the fixing plate 3 is fixedly connected with a first connecting frame 6, the front of the first connecting frame 6 is rotatably connected with a front wheel set 8 through a first rotating shaft 7, a first heat dissipation structure 9 is fixedly connected between the fixing plate 3 and the bottom of the truck frame 1 and positioned above the front wheel set 8, the first heat dissipation structure 9 comprises a second heat dissipation cover 901 and two mounting plates 902, the back of the second heat dissipation cover 901 is fixedly connected with the front of the first connecting frame 6, the two mounting plates 902 are respectively fixedly connected to the bottom of the fixing plate 3 and the bottom of the truck frame 1, and the bottoms of the two mounting plates 902 are both fixedly connected with a connecting shaft 903, a bearing plate 904 is arranged between the bottom ends of the two connecting shafts 903, the two connecting shafts 903 are rotatably connected with the bearing plate 904, a second water tank 905 is fixedly connected to the bottom of the bearing plate 904, a second condensate pump 906 is fixedly connected to the left side of the second water tank 905, a second water inlet pipe 908 is communicated with the water inlet end of the second condensate pump 906, the bottom end of the second water inlet pipe 908 is communicated with the left side of the second water tank 905, a second water outlet pipe 907 is communicated with the water outlet end of the second condensate pump 906, an expansion hose 909 is communicated with one end of the second water outlet pipe 907, a connecting pipe 910 is communicated with one end of the expansion hose 909, a second circulation cavity 911 is formed in the second heat dissipation cover 901, one end of the connecting pipe 910 penetrates through the top of the second heat dissipation cover 901 and extends into the second heat dissipation cover 901, the second heat dissipation cover 901 is semi-arc-shaped and uniformly sprays around the upper surface of the front wheel set 19, the spraying area is big, and the radiating efficiency is high, the connecting pipe 910 is located inside one end of second heat dissipation cover 901 and second circulation chamber 911 intercommunication, the internal surface of second heat dissipation cover 901 evenly is provided with the second cooling tube 912 with second circulation chamber 911 intercommunication, the one end intercommunication that second cooling tube 912 kept away from second heat dissipation cover 901 has second shower nozzle 913, the top intercommunication on second water tank 905 right side has second filler pipe 914, the top threaded connection of second filler pipe 914 has second screw cap 915, first condensate pump 14 and second condensate pump 906 connect the control panel of the inside driver's cabin of locomotive 4, and the driver can control the switch of first condensate pump 14 and second condensate pump 906 in the driver's cabin.
The both sides of 1 bottom of frame all are provided with two second link 10, the front of second link 10 is rotated through second pivot 11 and is connected with two rear wheel group 12, the top of frame 1 just is located the first water tank 13 of positive fixedly connected with of loading case 5, the first condensate pump 14 of the equal fixedly connected with in both sides of first water tank 13, two the end of intaking of first condensate pump 14 all communicates there is first inlet tube 15, two the equal intercommunication of one end of first inlet tube 15 has right angle pipe 16, two the inside that first water tank 13 just extended to first water tank 13 is all run through to the one end of right angle pipe 16, two the equal intercommunication of the play water end of first condensate pump 14 has first outlet pipe 17.
Two the bottom of first outlet pipe 17 all runs through frame 1 and extends to the bottom of frame 1, two between the front of second link 10 and be located the bottom fixedly connected with second heat radiation structure 18 of first outlet pipe 17, second heat radiation structure 18 includes two first heat dissipation covers 181, and first heat dissipation cover 181 is semi-arc, evenly sprays around the upper surface of rear wheel group 12, and it is big to spray the area, and the radiating efficiency is high, two first heat dissipation cover 181 is fixed connection respectively in two the front of second link 10.
The inner surfaces of the two first radiating covers 181 are uniformly communicated with first radiating pipes 184, and one ends of the first radiating pipes 184, which are far away from the first radiating covers 181, are both communicated with first nozzles 185.
The lead screw 22 is located the inside one end of motor case 23 and is connected with the output shaft transmission of motor 24, the left side of waterproof canopy 25 bottom and the left side fixed connection at loading box 5 top, waterproof canopy 25 bottom right side all with two the top fixed connection of transmission piece 26, one transmission piece 26 and lead screw 22 threaded connection, another transmission piece 26 and slide bar 27 sliding connection.
The working principle is as follows: when the rear wheel cooling device is used, when the rear wheel needs cooling, two first condensation pumps 14 are started to extract water sources in a first water tank 13 through a first water inlet pipe 15 and a right-angle pipe 16, after the rear wheel needs cooling, the water sources are conveyed to the interior of a bent pipe 183 in two second heat dissipation structures 18 through two first water outlet pipes 17, the bent pipe 183 conveys the water sources to the interior of a first circulation cavity 182 in two first heat dissipation covers 181, the water sources are conveyed to the positions of the first heat dissipation pipes 184, the water sources are sprayed to the tire treads of the rear wheel set 12 through a first spray head 185 to absorb heat and dissipate heat, the phenomenon that the temperature of tires is too high due to long-distance running in high temperature weather and the tires are blown out is prevented, the first heat dissipation covers 181 are semi-arc-shaped and uniformly sprayed around the upper surface of the rear wheel set 12, when the front wheel needs cooling, the second condensation pumps 906 are started to extract the water sources in a second water tank 905 through a second water inlet pipe 908 to be condensed and cooled, then the water is delivered to the flexible hose 909 through the second water outlet pipe 907, the flexible hose 909 delivers the water into the inside of the connecting pipe 910, the connecting pipe 910 delivers the water to the inside of each second radiating pipe 912 through the second circulation cavity 911, the water is sprayed to the front tire tread of the front wheel set 8 through the second spray head 913 installed on the second radiating pipe 912 for heat absorption and radiation, the second radiating cover 901 is semi-arc and evenly sprayed around the upper surface of the front wheel set 19, when the water is required to be supplied to the inside of the first water tank 13, the first threaded cover 20 can be screwed off, the first water adding pipe 19 can be opened, the water is supplied to the inside of the first water tank 13, when the water is required to be supplied to the inside of the second water tank 905, the second threaded cover 915 can be screwed off, the second water adding pipe 914 can be opened, the inside of the second water tank 905 can be supplied, when the heavy truck turns, the angle between the head 4 and the frame 1 changes, the flexible hose 909 stretches along with the change of the angle, and meanwhile, the second water tank 905 rotates and adjusts along with the change of the angle between the vehicle head 4 and the vehicle frame 1 through the bearing plate 904 and the two connecting shafts 903.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (7)
1. The utility model provides a heavy truck tire heat radiation structure, includes frame (1), locomotive (4), fixed connection in fixed plate (3) of locomotive (4) bottom, connecting rod (2) and fixed connection in the loading case (5) at frame (1) top of connecting fixed plate (3) and frame (1), its characterized in that: the bottom of the fixed plate (3) is fixedly connected with a first connecting frame (6), the front of the first connecting frame (6) is rotatably connected with a front wheel set (8) through a first rotating shaft (7), a first heat dissipation structure (9) is fixedly connected between the fixed plate (3) and the bottom of the vehicle frame (1) and above the front wheel set (8), the first heat dissipation structure (9) comprises a second heat dissipation cover (901) and two mounting plates (902), the back of the second heat dissipation cover (901) is fixedly connected with the front of the first connecting frame (6), the two mounting plates (902) are respectively and fixedly connected with the bottom of the fixed plate (3) and the bottom of the vehicle frame (1), connecting shafts (903) are fixedly connected to the bottoms of the two mounting plates (902), a bearing plate (904) is arranged between the bottoms of the two connecting shafts (903), and the two bearing plates (903) are rotatably connected with the bearing plate (904), the bottom of the bearing plate (904) is fixedly connected with a second water tank (905), the left side of the second water tank (905) is fixedly connected with a second condensation pump (906), the water inlet end of the second condensation pump (906) is communicated with a second water inlet pipe (908), the bottom end of the second water inlet pipe (908) is communicated with the left side of the second water tank (905), the water outlet end of the second condensation pump (906) is communicated with a second water outlet pipe (907), one end of the second water outlet pipe (907) is communicated with a flexible hose (909), one end of the flexible hose (909) is communicated with a connecting pipe (910), a second circulation cavity (911) is formed in the second heat dissipation cover (901), one end of the connecting pipe (910) penetrates through the top of the second heat dissipation cover (901) and extends into the second heat dissipation cover (901), and one end, positioned in the second heat dissipation cover (901), of the connecting pipe (910) is communicated with the second circulation cavity (911), the inner surface of the second heat dissipation cover (901) is uniformly provided with a second heat dissipation pipe (912) communicated with a second circulation cavity (911), one end, far away from the second heat dissipation cover (901), of the second heat dissipation pipe (912) is communicated with a second spray head (913), the top on the right side of the second water tank (905) is communicated with a second water adding pipe (914), and the top end of the second water adding pipe (914) is in threaded connection with a second threaded cover (915).
2. The heat dissipating structure for a tire of a heavy truck according to claim 1, wherein: frame (1) bottom both sides all are provided with two second link (10), the front of second link (10) is rotated through second pivot (11) and is connected with two rear wheel group (12), the top of frame (1) just is located the first water tank of the positive fixedly connected with (13) of loading case (5), the equal first condensate pump of fixedly connected with (14) in both sides of first water tank (13), two the end of intaking of first condensate pump (14) all communicates and has first inlet tube (15), two the one end of first inlet tube (15) all communicates and has right angle pipe (16), two the one end of right angle pipe (16) all runs through first water tank (13) and extends to the inside of first water tank (13), two the play water end of first condensate pump (14) all communicates and has first outlet pipe (17).
3. The heat dissipating structure for a tire of a heavy truck according to claim 2, wherein: the bottom of first outlet pipe (17) all runs through frame (1) and extends to the bottom of frame (1), two bottom fixedly connected with second heat radiation structure (18) that just are located first outlet pipe (17) between the front of second link (10), second heat radiation structure (18) include two first heat dissipation covers (181), two first heat dissipation cover (181) respectively fixed connection in two the front of second link (10).
4. The heat dissipating structure for a tire of a heavy truck according to claim 3, wherein: first circulation cavities (182) are formed in the two first heat dissipation covers (181), and bending pipes (183) communicated with the two first circulation cavities (182) are arranged between the tops of the two first heat dissipation covers (181).
5. The heat dissipating structure for the tire of a heavy truck according to claim 4, wherein: the inner surfaces of the two first radiating covers (181) are uniformly communicated with first radiating pipes (184), and one ends, far away from the first radiating covers (181), of the first radiating pipes (184) are communicated with first spray heads (185).
6. The heat dissipating structure for a tire of a heavy truck according to claim 2, wherein: the top intercommunication of first water tank (13) has first filler pipe (19), the top threaded connection of first filler pipe (19) has first thread lid (20), the top of frame (1) just is located two fixed plates (21) of the equal fixedly connected with in both sides at the positive both sides of loading case (5) and the back, two rotate between the relative one side of fixed plate (21) and be connected with lead screw (22), two in addition fixedly connected with slide bar (27) between the relative one side of fixed plate (21), the surface of lead screw (22) and slide bar (27) all is overlapped and is equipped with driving block (26), the top cover of loading case (5) is equipped with waterproof canopy (25), one the left side fixedly connected with motor case (23) of fixed plate (21), the inside fixedly connected with motor (24) of motor case (23), the one end of lead screw (22) runs through one in proper order fixed plate (21) and motor case (23) just extend to motor case (23) Of the inner part of (a).
7. The heat dissipating structure for a tire of a heavy truck according to claim 6, wherein: lead screw (22) are located the inside one end of motor case (23) and are connected with the output shaft transmission of motor (24), the left side of waterproof canopy (25) bottom and the left side fixed connection who loads case (5) top, waterproof canopy (25) bottom right side all with two the top fixed connection of transmission piece (26), one transmission piece (26) and lead screw (22) threaded connection, another transmission piece (26) and slide bar (27) sliding connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120300731.3U CN214420148U (en) | 2021-02-01 | 2021-02-01 | Heavy truck tire heat radiation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120300731.3U CN214420148U (en) | 2021-02-01 | 2021-02-01 | Heavy truck tire heat radiation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214420148U true CN214420148U (en) | 2021-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120300731.3U Active CN214420148U (en) | 2021-02-01 | 2021-02-01 | Heavy truck tire heat radiation structure |
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| Country | Link |
|---|---|
| CN (1) | CN214420148U (en) |
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2021
- 2021-02-01 CN CN202120300731.3U patent/CN214420148U/en active Active
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