CN214264389U - Welding robot that auto-parts used - Google Patents
Welding robot that auto-parts used Download PDFInfo
- Publication number
- CN214264389U CN214264389U CN202022739196.XU CN202022739196U CN214264389U CN 214264389 U CN214264389 U CN 214264389U CN 202022739196 U CN202022739196 U CN 202022739196U CN 214264389 U CN214264389 U CN 214264389U
- Authority
- CN
- China
- Prior art keywords
- welding
- rotating
- cylinder
- rod
- connecting rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Automatic Assembly (AREA)
Abstract
The utility model discloses a welding robot for automobile accessories, which comprises a base, a lower welding column and a first cylinder, wherein a cross beam is arranged at the middle position above the base, and the left and right sides of the beam are both provided with rotating shafts, the outer side of each rotating shaft is sleeved with a lantern ring, the outer wall of each lantern ring is fixed with a connecting rod, one end of each connecting rod, far away from each lantern ring, is provided with a vertical rod, and a mounting plate is arranged above the upright stanchion, an auxiliary tool is fixed on the outer wall of the mounting plate, a back frame is arranged above the rear side of the base, a main machine is arranged on the inner side of the back frame, a bottom frame is arranged on the front side of the main machine, the front end of the bottom frame is connected with a rotating rod, the lower welding column is arranged on the front side of the panel, and an upper welding column is arranged above the lower welding column, the first air cylinder is arranged at the rear end of the first piston telescopic rod, and an air pump is arranged on the left side of the rear part of the first air cylinder. The utility model discloses overall arrangement is compact, saves space to the whole assembly is simple, and the practicality is strong.
Description
Technical Field
The utility model relates to an auto-parts production and processing technology field specifically is a welding robot that auto-parts used.
Background
Automobile parts are all units forming the whole automobile and a product serving the automobile, and with the improvement of living standard of people, people consume more and more automobiles, and the market of the automobile parts is getting bigger and bigger. With the increasingly fierce competition of automobile parts processing markets, the deep mind of environmental protection concepts and the continuous upgrading and application of technologies, the international automobile parts processing industry shows the following development characteristics in recent years: the trend of matching and modular supply of automobile accessory processing systems is emerging; globalization of automobile parts processing and purchasing; the transfer speed of the automobile accessory processing industry is accelerated.
Auto-parts welding equipment in the existing market is not convenient for set up appurtenance by welding host computer equipment in the use, and the installation is dismantled to the complete machine inconvenient for auto-parts need change a plurality of stations in welding process, and the occupation space that not only leads to whole equipment is big, still causes the problem that welding operation production efficiency is low, for this reason, we provide the welding robot that auto-parts that the practicality is higher used.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a welding robot that auto-parts used has solved auto-parts welding equipment on the existing market and is not convenient for set up appurtenance by welding host computer equipment in the use, and the installation is dismantled to the complete machine inconvenient for auto-parts need change a plurality of stations in welding process, and the occupation space that not only leads to whole equipment is big, still causes the problem that welding operation production efficiency hangs down.
In order to achieve the above object, the utility model provides a following technical scheme: a welding robot for automobile accessories comprises a base, a lower welding column and a first air cylinder, wherein a cross beam is installed at the middle position above the base, rotating shafts are installed on the left side and the right side of the cross beam respectively, a lantern ring is sleeved on the outer side of each rotating shaft, a connecting rod is fixed on the outer wall of each lantern ring, a vertical rod is installed at one end, away from the lantern ring, of each connecting rod, a mounting plate is installed above each vertical rod, an auxiliary tool is fixed on the outer wall of each mounting plate, a back frame is installed above the rear side of the base, a main machine is installed on the inner side of the back frame, a bottom frame is installed on the front side of the main machine, a rotating rod is connected to the front end of the bottom frame, a rotating plate is connected to the upper portion of each rotating rod, a panel is installed on the front side of the front panel, an upper welding column is arranged above the lower welding column, and a welding support is installed on the rear side of the upper welding column, and the rear side of welding support is connected with first piston telescopic link, first cylinder is installed in the rear end of first piston telescopic link, and installs the air pump on the left of the rear of first cylinder, the cylinder base is installed to the below of first cylinder, coupling assembling is installed to the rear side of connecting rod, and coupling assembling's rear side is connected with second piston telescopic link, the second cylinder is installed to the rear end of second piston telescopic link, and the mount pad is installed to one side that the second cylinder is close to the crossbeam.
Preferably, the rotating shaft forms a rotating structure through the lantern ring and the connecting rod, and the connecting rod is perpendicular to the vertical rod.
Preferably, the underframe forms a rotating structure through the rotating rod and the rotating plate, the rotating plate is connected with the welding support in a welding mode, and the welding support is connected with the first piston telescopic rod in a rotating mode.
Preferably, the vertical central lines of the lower welding column and the upper welding column are overlapped, and the upper welding column and the welding support as well as the lower welding column and the panel are connected in a sleeved mode.
Preferably, the cylinder base is rotatably connected with the first cylinder, the first cylinder forms a telescopic structure with the welding support through a first piston telescopic rod, and the first cylinder is communicated with the air pump.
Preferably, the connecting assembly comprises a rotating arm, a pin shaft and a clamping plate, the clamping plate is installed at one end, far away from the connecting rod, of the rotating arm, and the pin shaft is installed at the connecting position of the clamping plate and the rotating arm.
Preferably, the rotating arm forms a rotating structure between the pin shaft and the clamping plate, the clamping plate is in threaded connection with the second piston telescopic rod, and the clamping plate forms a telescopic structure between the second piston telescopic rod and the second cylinder.
Preferably, the mounting base comprises a sliding plate, a sliding block and a fixed shaft, the sliding block is connected to the outer side of the sliding plate, and the fixed shaft is mounted on one side, away from the sliding plate, of the sliding block.
Preferably, a sliding structure is formed between the sliding plate and the sliding block, and a rotating structure is formed between the sliding block and the fixed shaft.
Compared with the prior art, the beneficial effects of the utility model are as follows:
1. the utility model is provided with a lantern ring which is sleeved outside the rotating shaft and can move relative to the rotating shaft, so as to drive the connecting rod to rotate around the rotating shaft, thereby adjusting the position of the auxiliary tool, enabling the auxiliary tool to rotate inwards to the lower welding column and the upper welding column, assisting the welding operation, and being capable of rotating outwards to expand without influencing the feeding and discharging of auto parts;
2. the utility model discloses set up the rotor plate and can rotate around the relative chassis of bull stick to it opens to drive the rotation of upper weld post, conveniently welds, sets up welding post and upper weld post and cup joints with welding support and panel respectively down, then utilizes the bolt locking to fix, makes the assembly operation of two welding posts simpler, also is convenient for later stage to dismantle simultaneously, changes the maintenance to the welding post;
3. the utility model discloses set up the air pump and can change the atmospheric pressure state in the first cylinder, and then drive the first piston telescopic link and carry out the shrink operation, make the rotation effect of commentaries on classics board can be driven by pneumatic equipment, labour saving and time saving more, and pneumatic flexible effect not only the repeatability is high, and the flexible process is also more steady, and then improves the stability of whole welding operation, prolongs the life of spare part;
4. the utility model discloses set up and can rotate between rotor arm, round pin axle and the cardboard three to the pneumatic drive action through second piston telescopic link and second cylinder is used in driving the connecting rod and taking place to rotate in the time of rotating, and then realizes the gyration of pneumatic drive connecting rod, makes the gyration of connecting rod more convenient, and these mechanism symmetries set up to two sets simultaneously, are convenient for add a plurality of appurtenances by main equipment and carry out the auxiliary welding operation;
5. the utility model discloses set up and to slide between slide and the slider, consequently the second cylinder can utilize the sliding action adjusting position between slide and the slider, the biggest process of the control connecting rod pivoted of being convenient for, whole welding robot overall arrangement is compact, saves space to the whole assembly is simple, and the practicality is strong, can also reduce the transfer of auto-parts between a plurality of stations simultaneously, is favorable to improving welding operation's production efficiency.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic top view of the base of the present invention;
FIG. 3 is a schematic view of the mounting structure of the main frame and the welding column of the present invention;
fig. 4 is a schematic view of the mounting structure of the connecting assembly, the second cylinder and the mounting seat of the present invention;
fig. 5 is a schematic view of the top-view three-dimensional structure of the present invention.
In the figure: 1. a base; 2. a cross beam; 3. a rotating shaft; 4. a collar; 5. a connecting rod; 6. erecting a rod; 7. mounting a plate; 8. an auxiliary tool; 9. a back frame; 10. a host; 11. a chassis; 12. a rotating rod; 13. rotating the plate; 14. a panel; 15. a lower welding column; 16. mounting a welding column; 17. welding a support; 18. a first piston telescoping rod; 19. a first cylinder; 20. a cylinder base; 21. an air pump; 22. a connecting assembly; 221. a rotating arm; 222. a pin shaft; 223. clamping a plate; 23. a second piston telescopic rod; 24. a second cylinder; 25. a mounting seat; 251. a slide plate; 252. a slider; 253. and (5) fixing the shaft.
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. 1-5, a welding robot for auto parts includes a base 1, a beam 2, a rotating shaft 3, a collar 4, a connecting rod 5, a vertical rod 6, a mounting plate 7, an auxiliary tool 8, a back frame 9, a main frame 10, a bottom frame 11, a rotating rod 12, a rotating plate 13, a panel 14, a lower welding column 15, an upper welding column 16, a welding support 17, a first piston telescopic rod 18, a first cylinder 19, a cylinder base 20, an air pump 21, a connecting assembly 22, a rotating arm 221, a pin 222, a clamping plate 223, a second piston telescopic rod 23, a second cylinder 24, a mounting seat 25, a sliding plate, a slider 252 and a fixed shaft 251, wherein the beam 2 is mounted at the middle position above the base 1, the rotating shaft 3 is mounted on both the left side and the right side of the beam 2, the collar 4 is sleeved on the outer side of the rotating shaft 3, the connecting rod 5 is fixed on the outer wall of the collar 4, the connecting rod 5 is mounted on one end of the connecting rod 5 far from the collar 4, a mounting plate 7 is mounted above the upright 6, an auxiliary tool 8 is fixed on the outer wall of the mounting plate 7, a back frame 9 is mounted above the rear side of the base 1, a main machine 10 is mounted on the inner side of the back frame 9, an underframe 11 is mounted on the front side of the main machine 10, the front end of the underframe 11 is connected with a rotating rod 12, a rotating plate 13 is connected above the rotating rod 12, and a panel 14 is mounted on the front side of the rotating rod 12;
the lower welding column 15 is installed on the front side of the panel 14, an upper welding column 16 is arranged above the lower welding column 15, a welding support 17 is installed on the rear side of the upper welding column 16, a first piston telescopic rod 18 is connected to the rear side of the welding support 17, a first cylinder 19 is installed at the rear end of the first piston telescopic rod 18, an air pump 21 is installed on the left side of the rear side of the first cylinder 19, a cylinder base 20 is installed below the first cylinder 19, a connecting assembly 22 is installed on the rear side of the connecting rod 5, a second piston telescopic rod 23 is connected to the rear side of the connecting assembly 22, a second cylinder 24 is installed at the rear end of the second piston telescopic rod 23, an installation seat 25 is installed on one side of the second cylinder 24 close to the cross beam 2, the rotating shaft 3 forms a rotating structure with the connecting rod 5 through a lantern ring 4, the connecting rod 5 is perpendicular to the upright rod 6, the lantern ring 4 is arranged to be sleeved on the outer side of the rotating shaft 3 and can move relative to the rotating shaft 3, the connecting rod 5 can be driven to rotate around the rotating shaft 3, so that the position of the auxiliary tool 8 can be adjusted to be rotated inwards to the lower welding column 15 and the upper welding column 16 for welding operation assistance, and can also be rotated outwards for unfolding, and the feeding and discharging of automobile parts are not influenced;
the bottom frame 11 forms a rotating structure through the rotating rod 12 and the rotating plate 13, the rotating plate 13 is connected with the welding support 17 in a welding manner, the welding support 17 is connected with the first piston telescopic rod 18 in a rotating manner, the rotating plate 13 can rotate around the rotating rod 12 relative to the bottom frame 11 so as to drive the upper welding column 16 to rotate and open, welding is convenient, the vertical central lines of the lower welding column 15 and the upper welding column 16 are superposed with each other, the upper welding column 16 and the welding support 17 as well as the lower welding column 15 and the panel 14 are connected in a sleeved manner, the lower welding column 15 and the upper welding column 16 are respectively sleeved with the welding support 17 and the panel 14 and then locked and fixed by bolts, so that the assembly operation of the two welding columns is simpler, meanwhile, later-stage disassembly is convenient, the welding columns are replaced and maintained, and the cylinder base 20 and the first cylinder 19 are connected in a rotating manner, the first air cylinder 19 and the welding support 17 form a telescopic structure through the first piston telescopic rod 18, the first air cylinder 19 is communicated with the air pump 21, the air pump 21 is arranged to change the air pressure state inside the first air cylinder 19, and then the first piston telescopic rod 18 is driven to perform the contraction operation, so that the rotation effect of the rotating plate 13 can be driven by pneumatic equipment, time and labor are saved, the pneumatic telescopic action is high in repeatability, the telescopic process is more stable, the stability of the whole welding operation is improved, and the service life of parts is prolonged;
the connecting assembly 22 comprises a rotating arm 221, a pin 222 and a catch plate 223, and one end of the rotating arm 221 away from the connecting rod 5 is provided with the catch plate 223, and a pin 222 is installed at the joint of the clamping plate 223 and the rotating arm 221, the rotating arm 221 forms a rotating structure with the clamping plate 223 through the pin 222, and the clamping plate 223 is in threaded connection with the second piston telescopic rod 23, and the clamping plate 223 forms a telescopic structure through the second piston telescopic rod 23 and the second cylinder 24, the rotating arm 221, the pin 222 and the clamping plate 223 are arranged to be rotatable, so that the pneumatic driving action through the second piston telescopic rod 23 and the second air cylinder 24 is used for driving the connecting rod 5 to rotate at the same time of rotating, furthermore, the rotation of the connecting rod 5 is pneumatically driven, so that the rotation of the connecting rod 5 is more convenient, and meanwhile, the mechanisms are symmetrically arranged into two groups, so that a plurality of auxiliary tools 8 are conveniently added beside the main equipment for auxiliary welding operation;
mount pad 25 includes slide 251, slider 252 and dead axle 253, and the outside of slide 251 is connected with slider 252, and dead axle 253 is installed to one side that slide 252 kept away from slide 251, constitute sliding construction between slide 251 and the slider 252, and constitute rotating construction between slider 252 and the dead axle 253, it can slide to set up between slide 251 and the slider 252, consequently, second cylinder 24 can utilize the sliding action adjusting position between slide 251 and the slider 252, be convenient for control connecting rod 5 pivoted maximum process, whole welding robot overall arrangement is compact, save space, and the whole assembly is simple, therefore, the clothes hanger is strong in practicability, simultaneously can also reduce the transfer of auto-parts between a plurality of stations, be favorable to improving welding operation's production efficiency.
The working principle is as follows: for the welding robot for the automobile parts, firstly, the base 1 supports the beam 2 and the back frame 9, the main machine 10 can control the whole device to work, when the auxiliary tools 8 on two sides are required to be rotated to a welding position, the second cylinder 24 drives the second piston telescopic rod 23 to extend, the second piston telescopic rod 23 pushes the connecting rod 5 to move through the connecting component 22, so that the connecting rod 5 drives the lantern ring 4 to rotate around the rotating shaft 3, meanwhile, the rotating arm 221 rotates around the pin shaft 222 relative to the clamping plate 223, the second cylinder 24 drives the sliding block 252 in the mounting seat 25 to rotate with the fixed shaft 253, when the position of the second cylinder 24 is required to be changed in the later period, bolts on the sliding block 252 and the sliding plate 251 can be firstly unscrewed, so that the sliding block 252 can slide relative to the sliding plate 251 to change the position, and the connecting rod 5 drives the auxiliary tools 8 to be contracted together through the upright rod 6 and the mounting plate 7;
similarly, the air pump 21 takes out the inside gas of first cylinder 19, the inside gas of first cylinder 19 reduces, pressure reduces, atmospheric pressure promotes first piston telescopic link 18 and contracts to first cylinder 19 is inside to return, first piston telescopic link 18 passes through welding support 17 and drives welding post 16 and contracts backward, welding support 17 drives swivel plate 13 and rotates around the relative chassis 11 of bull stick 12, make and go up welding post 16 and upwards rotate, take place the separation with taking place between the lower welding post 15 of panel 14 front side, also take place the rotation effect between first cylinder 19 and the cylinder base 20 simultaneously, accomplish the use of the welding robot that whole auto-parts used like this.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a welding robot that auto-parts used, includes base (1), lower welding post (15) and first cylinder (19), its characterized in that: crossbeam (2) is installed to the top intermediate position of base (1), and pivot (3) are all installed to the left and right sides of crossbeam (2), lantern ring (4) has been cup jointed in the outside of pivot (3), and the outer wall of lantern ring (4) is fixed with connecting rod (5), pole setting (6) are installed to the one end that lantern ring (4) were kept away from to connecting rod (5), and mounting panel (7) are installed to the top of pole setting (6), the outer wall of mounting panel (7) is fixed with appurtenance (8), back of the body frame (9) is installed to the rear side top of base (1), and the inboard of back of the body frame (9) is installed host computer (10), chassis (11) are installed to the front side of host computer (10), and the front end of chassis (11) is connected with bull stick (12), the top of bull stick (12) is connected with rotor (13), and panel (14) are installed to the front side of bull stick (12), the lower welding column (15) is arranged at the front side of the panel (14), an upper welding column (16) is arranged above the lower welding column (15), a welding support (17) is arranged at the rear side of the upper welding column (16), and the rear side of the welding support (17) is connected with a first piston telescopic rod (18), the first cylinder (19) is arranged at the rear end of the first piston telescopic rod (18), an air pump (21) is installed on the left side of the rear portion of the first air cylinder (19), an air cylinder base (20) is installed below the first air cylinder (19), a connecting assembly (22) is installed on the rear side of the connecting rod (5), and the rear side of the connecting component (22) is connected with a second piston telescopic rod (23), the rear end of the second piston telescopic rod (23) is provided with a second cylinder (24), and one side of the second cylinder (24) close to the cross beam (2) is provided with a mounting seat (25).
2. The welding robot for automobile parts according to claim 1, characterized in that: the rotating shaft (3) forms a rotating structure through the lantern ring (4) and the connecting rod (5), and the connecting rod (5) and the vertical rod (6) are perpendicular to each other.
3. The welding robot for automobile parts according to claim 1, characterized in that: the chassis (11) forms a rotating structure through the rotating rod (12) and the rotating plate (13), the rotating plate (13) is connected with the welding support (17) in a welding mode, and the welding support (17) is connected with the first piston telescopic rod (18) in a rotating mode.
4. The welding robot for automobile parts according to claim 1, characterized in that: the vertical central lines of the lower welding column (15) and the upper welding column (16) are overlapped, and the upper welding column (16) and the welding support (17) as well as the lower welding column (15) and the panel (14) are connected in a sleeved mode.
5. The welding robot for automobile parts according to claim 1, characterized in that: the air cylinder base (20) is rotatably connected with the first air cylinder (19), the first air cylinder (19) forms a telescopic structure through the first piston telescopic rod (18) and the welding support (17), and the first air cylinder (19) is communicated with the air pump (21).
6. The welding robot for automobile parts according to claim 1, characterized in that: coupling assembling (22) include rotor arm (221), round pin axle (222) and cardboard (223), and rotor arm (221) keep away from the one end of connecting rod (5) and install cardboard (223), and round pin axle (222) are installed to the junction of cardboard (223) and rotor arm (221).
7. The welding robot for automobile parts according to claim 6, characterized in that: the rotating arm (221) forms a rotating structure through the pin shaft (222) and the clamping plate (223), the clamping plate (223) is in threaded connection with the second piston telescopic rod (23), and the clamping plate (223) forms a telescopic structure through the second piston telescopic rod (23) and the second cylinder (24).
8. The welding robot for automobile parts according to claim 1, characterized in that: the mounting seat (25) comprises a sliding plate (251), a sliding block (252) and a fixed shaft (253), the sliding block (252) is connected to the outer side of the sliding plate (251), and the fixed shaft (253) is mounted on one side, away from the sliding plate (251), of the sliding block (252).
9. The welding robot for automobile parts according to claim 8, characterized in that: a sliding structure is formed between the sliding plate (251) and the sliding block (252), and a rotating structure is formed between the sliding block (252) and the fixed shaft (253).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202022739196.XU CN214264389U (en) | 2020-11-24 | 2020-11-24 | Welding robot that auto-parts used |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202022739196.XU CN214264389U (en) | 2020-11-24 | 2020-11-24 | Welding robot that auto-parts used |
Publications (1)
Publication Number | Publication Date |
---|---|
CN214264389U true CN214264389U (en) | 2021-09-24 |
Family
ID=77776633
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202022739196.XU Active CN214264389U (en) | 2020-11-24 | 2020-11-24 | Welding robot that auto-parts used |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN214264389U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112548406A (en) * | 2020-11-24 | 2021-03-26 | 广州优尼冲压有限公司 | Welding robot that auto-parts used |
-
2020
- 2020-11-24 CN CN202022739196.XU patent/CN214264389U/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112548406A (en) * | 2020-11-24 | 2021-03-26 | 广州优尼冲压有限公司 | Welding robot that auto-parts used |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN214264389U (en) | Welding robot that auto-parts used | |
CN113020542B (en) | Investment casting shell-making manipulator | |
CN210010658U (en) | Vertical stand dismouting machine | |
CN104760477A (en) | Vehicle-mounted operation type tyre disassembling and assembling machine | |
CN201082707Y (en) | Movable concrete pump vehicle | |
CN112548406A (en) | Welding robot that auto-parts used | |
CN209634171U (en) | A kind of tyre dismounting transport device | |
CN209479317U (en) | A kind of wheel disassembly robot | |
CN219270821U (en) | Overturning and storage control mechanism of floor washing machine station board | |
CN216543174U (en) | Bicycle bracket and automatic recycling and disassembling device based on same | |
CN107856483B (en) | Tire dismouting helping hand arm device | |
CN108356699B (en) | Polisher strutting arrangement | |
CN215033413U (en) | Investment casting shell-making manipulator | |
CN111099322A (en) | General type stands up frock | |
CN201120882Y (en) | Ambulation machine supporting device and concrete pump vehicle with the supporting device | |
CN111195901B (en) | Multi-foot deformation robot based on Schatz mechanism | |
CN113146020A (en) | Inner support device for longitudinal seam friction stir welding and welding method thereof | |
CN109458218B (en) | Straight arm type heavy load tunnel multifunctional operation platform | |
WO2021003857A1 (en) | Lift | |
CN214132412U (en) | Automobile shell processing is with application device convenient to fix | |
CN205463776U (en) | Many retooling mechanisms of numerical control | |
CN212844380U (en) | Simulation detection tool for assembly of rear overhang part of automobile chassis | |
CN214213428U (en) | Auxiliary fixing device for ball table | |
CN215697309U (en) | Molybdenum alloy pole processing is with mould of bending | |
CN214459835U (en) | Warning device for municipal construction |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |