CN219808214U - Land leveling device for engineering - Google Patents
Land leveling device for engineering Download PDFInfo
- Publication number
- CN219808214U CN219808214U CN202321242797.7U CN202321242797U CN219808214U CN 219808214 U CN219808214 U CN 219808214U CN 202321242797 U CN202321242797 U CN 202321242797U CN 219808214 U CN219808214 U CN 219808214U
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- leveling
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- land
- driving
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- 230000007246 mechanism Effects 0.000 claims abstract description 34
- 238000007790 scraping Methods 0.000 claims abstract description 34
- 238000004140 cleaning Methods 0.000 claims abstract description 25
- 239000002689 soil Substances 0.000 claims abstract description 22
- 230000010405 clearance mechanism Effects 0.000 claims abstract description 4
- 230000006835 compression Effects 0.000 claims description 11
- 238000007906 compression Methods 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000003068 static effect Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 208000034656 Contusions Diseases 0.000 description 2
- 208000034526 bruise Diseases 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Soil Working Implements (AREA)
Abstract
The utility model discloses a land leveling device for engineering, which relates to the technical field of land leveling and comprises the following components: a bottom frame; leveling plates; leveling rollers; the driving mechanism is used for driving the leveling plate to reciprocate up and down and driving the leveling roller to roll; the leveling plate cleaning mechanism is used for cleaning soil at the bottom of the leveling plate; and the leveling roller cleaning mechanism is used for cleaning soil on the surface of the leveling roller. According to the utility model, through the arrangement of the driving mechanism, the leveling plate can be driven to reciprocate up and down to tamp and level the land, and the leveling roller can be driven to roll continuously to roll and level the land; through the arrangement of the leveling plate cleaning mechanism, the leveling plate scraping plate can scrape the soil adhered to the lower end surface of the leveling plate; through leveling cylinder clearance mechanism's setting, leveling cylinder scraper blade can strike off the earth of leveling cylinder surface adhesion, is soft contact between leveling cylinder scraper blade and the leveling cylinder surface, prolongs the life of this engineering land leveling device.
Description
Technical Field
The utility model relates to the technical field of land leveling, in particular to a land leveling device for engineering.
Background
In the process of land trimming construction, a road surface needs to be flattened by using a road pressing vehicle, and in some special cases, such as a narrower space, the road pressing vehicle is inconvenient to use, and the land needs to be flattened by using a manually-pushed flattening device, so that the attractiveness of land trimming is maintained.
The patent with the publication number of CN216457853U discloses a land leveling device for civil engineering construction, which comprises a frame and a dust falling mechanism; the leveling module is fixedly arranged on one side of the treatment box and comprises a shell fixedly connected with one side wall of the treatment box, a cavity is formed in the shell, a motor is fixedly arranged on one side of the shell, a rotating frame is fixedly arranged at the output end of the motor, the rotating frame is arranged in the shell, a connecting piece is rotationally connected with the rotating frame, one end of the connecting piece is rotationally connected with the protruding end of the rotating frame, a sliding frame is hinged to the connecting piece and is in sliding connection with the shell, and an elastic ramming structure is detachably arranged at one end of the sliding frame extending to the outside of the shell; the elastic tamping structure comprises a first connecting plate detachably connected with the sliding frame, the first connecting plate is connected with a second connecting plate through an elastic telescopic rod, a spring is installed in the elastic telescopic rod, and the second connecting plate is detachably connected with a leveling head.
Above-mentioned soil leveling device for civil engineering construction is when using, level the soil through the first reciprocating motion of leveling of elasticity ramming structure, when leveling the first continuous ramming of soil, the first terminal surface of leveling can constantly contact with ground, can make the first terminal surface adhesion of leveling have earth under, and the earth of adhesion probably is uneven, can influence the leveling effect of leveling the first to the soil, and above-mentioned soil leveling device for civil engineering construction, if want to clear up the earth of leveling first terminal surface under, still need stop whole device, clear up through the manual work.
Disclosure of Invention
The utility model aims to provide an engineering land leveling device for solving the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: an engineering land leveling device, comprising:
the bottom frame is fixedly provided with a support frame at the upper end, and connecting blocks are fixedly arranged at the left and right ends of the front side and the rear side of the support frame;
the upper end of the leveling plate is fixedly provided with a lifting plate through a connecting column, the left side and the right side of the lifting plate are fixedly provided with sliding blocks, the left side wall and the right side wall of the support frame are provided with sliding holes for sliding connection with the sliding blocks, guide rods are fixedly arranged in the sliding holes, the sliding blocks are provided with guide holes for the guide rods to pass through, and compression springs are arranged between the sliding blocks and the inner walls of the bottoms of the sliding holes and outside the guide rods;
the leveling roller is rotationally arranged at the rear side in the bottom frame through a bearing;
the driving mechanism is used for driving the leveling plate to reciprocate up and down and driving the leveling roller to roll;
the leveling plate cleaning mechanism is arranged at the leveling plate and is used for cleaning soil at the bottom of the leveling plate;
the leveling roller cleaning mechanism is arranged on the rear side of the leveling roller and is used for cleaning soil on the surface of the leveling roller.
Optionally, the actuating mechanism includes the pivot, the pivot passes through the bearing rotation and installs in the support frame, pivot middle part fixed mounting has the cam, the cam is located the lifter plate directly over, pivot one end fixed mounting has first driven pulley, support frame upper end fixed mounting has the motor, the output shaft fixed mounting of motor has first driving pulley, be connected through first belt transmission between first driving pulley and the first driven pulley, pivot other end fixed mounting has the second driving pulley, install the second driven pulley on the leveling cylinder, be connected through the second belt transmission between second driven pulley and the second driving pulley.
Optionally, leveling board clearance mechanism includes two sets of leveling board scrapers that set up around, two sets of leveling board scrapers are all fixed in both ends about a side that the leveling board scrapers are on a back to each other and are equipped with the connecting rod that the upper end has the engaging lug, the engaging lug rotates with the connecting block through the dead axle to be connected, just be located the dead axle outside between engaging lug and the connecting block and install torsion spring, during the quiescent condition, two sets of leveling board scrapers are located leveling board lower terminal surface left and right sides and contact with leveling board lower terminal surface.
Optionally, both sides face all is fixed to be equipped with the deflector around the leveling board, two sets of the side that the deflector is on the back all inclines to set up, and two sets of the deflector uses the leveling board as the central front and back symmetry setting.
Optionally, leveling cylinder clearance mechanism includes leveling cylinder scraper blade, leveling cylinder scraper blade articulates in the underframe up end rear side, leveling cylinder scraper blade lower extreme left and right sides all articulates there is the telescopic link, the telescopic link lower extreme is connected with the underframe up end is articulated, extension spring is installed outward to the telescopic link, and when stationary state, leveling cylinder scraper blade contacts with leveling cylinder surface.
Optionally, the auxiliary roller is all installed in the rotation of both sides wall front end about the underframe, the underframe back side wall is fixed to be equipped with two sets of armrests, the handrail surface just is located the one end cover that keeps away from the underframe and is equipped with anti-skidding rubber circle.
Compared with the prior art, the utility model has the following beneficial effects:
according to the utility model, the driving mechanism is arranged, so that the leveling plate can be driven to reciprocate up and down, the soil can be compacted and leveled, the leveling roller can be driven to roll continuously, the soil can be leveled by rolling, the leveling plate and the leveling roller can be used for leveling the soil synchronously, the construction efficiency is improved, only one driving mechanism is needed, and the construction cost is reduced.
According to the utility model, by arranging the leveling plate cleaning mechanism, the leveling plate scraping plate can automatically scrape the soil adhered to the lower end surface of the leveling plate in the process of up-and-down reciprocating movement of the leveling plate.
According to the utility model, by arranging the leveling roller cleaning mechanism, the leveling roller scraping plate can automatically scrape the soil adhered to the surface of the leveling roller in the process that the leveling roller continuously rolls; the setting of telescopic link and extension spring for be soft contact between leveling cylinder scraper blade and the leveling cylinder surface, when this engineering land leveling device march takes place, reduce the bruise condition between leveling cylinder scraper blade and the leveling cylinder, prolong this engineering land leveling device's life.
Drawings
FIG. 1 is a left-hand structural schematic diagram of the present utility model;
FIG. 2 is a right side view of the present utility model;
FIG. 3 is a schematic view of the structure of the present utility model shown in FIG. 2 at a partially enlarged scale;
fig. 4 is a schematic view of a leveling plate cleaning mechanism and a leveling plate structure according to the present utility model.
In the figure: 1. a bottom frame; 2. a support frame; 3. a connecting block; 4. leveling plates; 5. a connecting column; 6. a lifting plate; 7. a slide block; 8. a slide hole; 9. a guide rod; 10. a compression spring; 11. leveling rollers; 12. a rotating shaft; 13. a cam; 14. a motor; 15. a first belt; 16. a second belt; 17. a leveling plate scraping plate; 18. a connecting rod; 19. fixing the shaft; 20. a torsion spring; 21. a guide plate; 22. leveling the roller scraping plate; 23. a telescopic rod; 24. a tension spring; 25. an auxiliary roller; 26. an armrest.
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.
Examples
Referring to fig. 1 to 4, the present utility model provides a technical solution: an engineering land leveling device, comprising:
the bottom frame 1, the upper end of the bottom frame 1 is fixedly provided with a support frame 2, and the left and right ends of the front side and the rear side of the support frame 2 are fixedly provided with connecting blocks 3;
the upper end of the leveling plate 4 is fixedly provided with a lifting plate 6 through a connecting column 5, the left side and the right side of the lifting plate 6 are fixedly provided with sliding blocks 7, the left side wall and the right side wall of the support frame 2 are respectively provided with sliding holes 8 for sliding connection with the sliding blocks 7, the sliding holes 8 are internally fixedly provided with guide rods 9, the sliding blocks 7 are provided with guide holes for the guide rods 9 to pass through, and compression springs 10 are arranged between the sliding blocks 7 and the inner bottom walls of the sliding holes 8 and outside the guide rods 9;
more specifically: lifting plate 6, spliced pole 5 and leveling plate 4 downwardly traveling, tamp the leveling through leveling plate 4 to the soil, have pressure downwardly traveling in-process in lifting plate 6 upper end, slider 7 moves down thereupon, and slider 7 compresses compression spring 10, when lifting plate 6 upper end loses pressure gradually, compression spring 10 resets for lifting plate 6, spliced pole 5 and leveling plate 4 upwards move.
The leveling roller 11 is rotatably arranged at the rear side in the bottom frame 1 through a bearing;
more specifically: the leveling roller 11 contacts the ground, and the soil is rolled and leveled by the rolling of the leveling roller 11.
The driving mechanism is used for driving the leveling plate 4 to reciprocate up and down and driving the leveling roller 11 to roll;
the driving mechanism comprises a rotating shaft 12, the rotating shaft 12 is rotatably arranged in the supporting frame 2 through a bearing, a cam 13 is fixedly arranged in the middle of the rotating shaft 12, the cam 13 is positioned right above the lifting plate 6, a first driven belt pulley is fixedly arranged at one end of the rotating shaft 12, a motor 14 is fixedly arranged at the upper end of the supporting frame 2, a first driving belt pulley is fixedly arranged on an output shaft of the motor 14, the first driving belt pulley is in transmission connection with the first driven belt pulley through a first belt 15, a second driving belt pulley is fixedly arranged at the other end of the rotating shaft 12, a second driven belt pulley is arranged on the leveling roller 11, and the second driven belt pulley is in transmission connection with the second driving belt pulley through a second belt 16.
More specifically: the motor 14 of the driving mechanism works to drive the first driving belt pulley to rotate, and the first driven belt pulley and the rotating shaft 12 are driven to rotate through the transmission of the first belt 15; the rotation of the rotating shaft 12 drives the cam 13 to rotate, and drives the lifting plate 6, the connecting column 5 and the leveling plate 4 to reciprocate up and down under the compression and reset of the compression spring 10; the rotation of the rotating shaft 12 drives the second driving belt pulley to rotate, and the second driven belt pulley rotates and the leveling roller 11 rolls through the transmission of the second belt 16.
The leveling plate cleaning mechanism is arranged at the leveling plate 4;
the leveling plate cleaning mechanism comprises two groups of leveling plate scraping plates 17 which are arranged front and back, wherein the left and right ends of one side surface of the two groups of leveling plate scraping plates 17, which are opposite, are fixedly provided with connecting rods 18 with connecting lugs at the upper ends, the connecting lugs are rotationally connected with the connecting block 3 through fixed shafts 19, torsion springs 20 are arranged between the connecting lugs and the connecting block 3 and positioned outside the fixed shafts 19, and in a static state, the two groups of leveling plate scraping plates 17 are positioned at the left and right sides of the lower end surface of the leveling plate 4 and are in contact with the lower end surface of the leveling plate 4;
the front side and the back side of the leveling plate 4 are fixedly provided with guide plates 21, one side of the two groups of guide plates 21, which are opposite, is obliquely arranged, and the two groups of guide plates 21 are symmetrically arranged around the leveling plate 4 as a center.
More specifically: when the driving mechanism drives the leveling plate 4 to move downwards, the leveling plate scraping plate 17 and the connecting rod 18 of the leveling plate cleaning mechanism rotate outwards continuously by taking the fixed shaft 19 as the center, the torsion spring 20 is continuously twisted, when the leveling plate 4 moves downwards to be in contact with the ground to perform tamping leveling on the ground, the leveling plate scraping plate 17 rotates to the outer side of the guide plate 21 and is higher than the lower end face of the leveling plate 4, so that the leveling plate scraping plate 17 cannot cause the barrier of tamping leveling of the leveling plate 4 on the ground, the guide plate 21 also plays a limiting role on the leveling plate scraping plate 17, the leveling plate scraping plate 17 cannot retract into the upper end of the leveling plate 4 automatically, and the leveling plate scraping plate 17 can also return to the lower end face of the leveling plate 4; under the driving of the driving mechanism and the reset of the compression spring 10, when the leveling plate 4 moves upwards to reset, the torsion spring 20 gradually loses torsion force to reset, so that the connecting rod 18 drives the leveling plate scraping plate 17 to rotate continuously towards the leveling plate 4, and the contact parts of the leveling plate scraping plates 17 on the front side and the rear side and the lower end face of the leveling plate 4 continuously move from the outer side of the lower end face of the leveling plate 4 to the middle part, so that soil adhered to the lower end face of the leveling plate 4 is scraped.
The leveling roller cleaning mechanism is arranged at the rear side of the leveling roller 11;
the leveling roller cleaning mechanism comprises a leveling roller scraping plate 22, the leveling roller scraping plate 22 is hinged to the rear side of the upper end face of the bottom frame 1, telescopic rods 23 are hinged to the left side and the right side of the lower end of the leveling roller scraping plate 22, the lower end of each telescopic rod 23 is hinged to the upper end face of the bottom frame 1, a tension spring 24 is arranged outside each telescopic rod 23, and in a static state, the leveling roller scraping plate 22 is in contact with the surface of the leveling roller 11.
More specifically: when the leveling roller 11 rolls forwards, the leveling roller scraping plate 22 of the leveling roller cleaning mechanism is continuously contacted with the outer surface of the leveling roller 11, and soil adhered to the surface of the leveling roller 11 is scraped off by the leveling roller scraping plate 22 in the process that the leveling roller 11 rolls continuously; through the setting of telescopic link 23 and extension spring 24 for be soft contact between leveling cylinder scraper blade 22 and the leveling cylinder 11 surface, when this engineering land leveling device march takes place, reduce the bruise condition between leveling cylinder scraper blade 22 and the leveling cylinder 11, prolong this engineering land leveling device's life.
Examples
Referring to fig. 1 to 4, auxiliary rollers 25 are rotatably mounted at the front ends of the left and right side walls of the bottom frame 1, two sets of armrests 26 are fixedly arranged on the rear side wall of the bottom frame 1, and an anti-slip rubber ring is sleeved on the outer surface of each of the armrests 26 and at one end far from the bottom frame 1.
More specifically: by the arrangement of the auxiliary rollers 25, the movement of the bottom frame 1 is assisted, and the front-back balance of the bottom frame 1 is maintained; by arranging the armrests 26, construction staff can conveniently push the land leveling device for engineering to move.
Working principle: when the land leveling device for engineering is used, a constructor holds the handrail 26 to control the direction of the land leveling device for engineering, works through the motor 14 of the driving mechanism, drives the first driving belt pulley to rotate, is driven by the first belt 15 to enable the first driven belt pulley and the rotating shaft 12 to rotate, the rotating shaft 12 rotates to drive the cam 13 to rotate, the lifting plate 6, the connecting column 5 and the leveling plate 4 are driven to reciprocate up and down under the compression and reset of the compression spring 10, the leveling plate 4 is used for tamping and leveling the land when moving downwards, the rotating shaft 12 rotates to drive the second driving belt pulley to rotate, is driven by the second belt 16 to enable the leveling roller 11 to roll, and the leveling roller 11 is used for rolling and leveling the land when the land rolls; when the leveling plate 4 moves downwards, the leveling plate scraping plate 17 and the connecting rod 18 of the leveling plate cleaning mechanism rotate outwards continuously by taking the dead axle 19 as a center, the torsion spring 20 is twisted continuously, and when the leveling plate 4 moves downwards to be in contact with the ground to tamp and level the ground, the leveling plate scraping plate 17 rotates to the outer side of the guide plate 21 and is higher than the lower end face of the leveling plate 4; when the leveling plate 4 moves upwards to reset, the torsion spring 20 gradually loses torsion force and resets, so that the connecting rod 18 drives the leveling plate scraping plate 17 to rotate towards the leveling plate 4 continuously, and the contact part of the leveling plate scraping plate 17 on the front side and the rear side and the lower end surface of the leveling plate 4 moves from the outer side of the lower end surface of the leveling plate 4 to the middle part continuously, thereby scraping earth adhered to the lower end surface of the leveling plate 4; when the leveling roller 11 rolls forwards, soil adhered to the surface of the leveling roller 11 is scraped by the leveling roller scraping plate 22 of the leveling roller cleaning mechanism, the leveling roller scraping plate 22 is in soft contact with the surface of the leveling roller 11 through the arrangement of the telescopic rod 23 and the extension spring 24, when jolt occurs in the advancing process of the engineering land leveling device, the damage condition between the leveling roller scraping plate 22 and the leveling roller 11 is reduced, and the service life of the engineering land leveling device is prolonged.
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 (6)
1. An engineering land leveling device, comprising:
the device comprises a bottom frame (1), wherein a support frame (2) is fixedly arranged at the upper end of the bottom frame (1), and connecting blocks (3) are fixedly arranged at the left end and the right end of the front side surface and the rear side surface of the support frame (2);
the leveling plate (4), leveling plate (4) upper end is fixed through spliced pole (5) and is equipped with lifter plate (6), lifter plate (6) both sides are all fixed and are equipped with slider (7), slide hole (8) that are used for sliding connection slider (7) are all seted up to support frame (2) both sides wall about, slide hole (8) internal fixation is equipped with guide bar (9), set up the guiding hole that supplies guide bar (9) to pass on slider (7), install compression spring (10) between slider (7) and the interior bottom wall of slide hole (8) and be located guide bar (9) outside;
the leveling roller (11) is rotationally arranged at the inner rear side of the bottom frame (1) through a bearing;
the driving mechanism is used for driving the leveling plate (4) to reciprocate up and down and driving the leveling roller (11) to roll;
the leveling plate cleaning mechanism is arranged at the leveling plate (4) and is used for cleaning soil at the bottom of the leveling plate (4);
the leveling roller cleaning mechanism is arranged on the rear side of the leveling roller (11) and is used for cleaning soil on the surface of the leveling roller (11).
2. The engineering land leveling device according to claim 1, wherein: the driving mechanism comprises a rotating shaft (12), the rotating shaft (12) is rotatably mounted in a supporting frame (2) through a bearing, a cam (13) is fixedly mounted in the middle of the rotating shaft (12), the cam (13) is located right above a lifting plate (6), a first driven belt wheel is fixedly mounted at one end of the rotating shaft (12), a motor (14) is fixedly mounted at the upper end of the supporting frame (2), a first driving belt wheel is fixedly mounted on an output shaft of the motor (14), the first driving belt wheel is in transmission connection with the first driven belt wheel through a first belt (15), a second driving belt wheel is fixedly mounted at the other end of the rotating shaft (12), and a second driven belt wheel is mounted on a leveling roller (11) and is in transmission connection with the second driving belt wheel through a second belt (16).
3. The engineering land leveling device according to claim 1, wherein: leveling board clearance mechanism is including two sets of leveling board scraper blade (17) that set up around, two sets of leveling board scraper blade (17) are all fixed to be equipped with link (18) that the upper end has the engaging lug in both sides of a side that is on the back of each other, the engaging lug rotates with connecting block (3) through dead axle (19) and is connected, torsion spring (20) are installed in just being located the dead axle (19) outside between engaging lug and connecting block (3), and during the static state, two sets of leveling board scraper blade (17) are located leveling board (4) lower terminal surface left and right sides and contact with leveling board (4) lower terminal surface.
4. A land leveling device for engineering according to claim 3, wherein: guide plates (21) are fixedly arranged on the front side and the rear side of the leveling plate (4), two groups of guide plates (21) are obliquely arranged on one side surface opposite to each other, and the two groups of guide plates (21) are symmetrically arranged around the leveling plate (4) serving as a center.
5. The engineering land leveling device according to claim 1, wherein: the leveling roller cleaning mechanism comprises a leveling roller scraping plate (22), the leveling roller scraping plate (22) is hinged to the rear side of the upper end face of the bottom frame (1), telescopic rods (23) are hinged to the left side and the right side of the lower end of the leveling roller scraping plate (22), the lower ends of the telescopic rods (23) are hinged to the upper end face of the bottom frame (1), extension springs (24) are arranged outside the telescopic rods (23), and in a static state, the leveling roller scraping plate (22) is in contact with the surface of the leveling roller (11).
6. The engineering land leveling device according to claim 1, wherein: the auxiliary rollers (25) are rotatably mounted at the front ends of the left side wall and the right side wall of the bottom frame (1), two groups of handrails (26) are fixedly arranged on the rear side wall of the bottom frame (1), and an anti-slip rubber ring is sleeved on the outer surface of each handrail (26) and located at one end far away from the bottom frame (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321242797.7U CN219808214U (en) | 2023-05-22 | 2023-05-22 | Land leveling device for engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321242797.7U CN219808214U (en) | 2023-05-22 | 2023-05-22 | Land leveling device for engineering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219808214U true CN219808214U (en) | 2023-10-10 |
Family
ID=88217415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321242797.7U Active CN219808214U (en) | 2023-05-22 | 2023-05-22 | Land leveling device for engineering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219808214U (en) |
-
2023
- 2023-05-22 CN CN202321242797.7U patent/CN219808214U/en active Active
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