CN210257878U - Special robot walking tire quick detach mechanism - Google Patents
Special robot walking tire quick detach mechanism Download PDFInfo
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- CN210257878U CN210257878U CN201921297007.9U CN201921297007U CN210257878U CN 210257878 U CN210257878 U CN 210257878U CN 201921297007 U CN201921297007 U CN 201921297007U CN 210257878 U CN210257878 U CN 210257878U
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 109
- 239000010959 steel Substances 0.000 claims abstract description 109
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- 230000008859 change Effects 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to a special robot walking tire quick detach mechanism, including drive shaft and tire, one side of the wheel hub of tire is equipped with the inside cavity perpendicularly and both ends are the open sleeve, the rigid coupling has the fixed ring of establishing towards on the telescopic inner wall sleeve axis direction is protruding, the fixed ring will the sleeve is inside to be separated into mounting hole and working hole, the working hole is close to the wheel hub setting, be equipped with in the fixed ring towards the steel ring of working hole direction extension, set up a plurality of ball grooves that are the circumference and distribute on the steel ring, the activity has placed the steel ball in the ball groove, set up on the drive shaft and supply the annular groove of steel ball joint when the sleeve slides and cup joints to on the drive shaft; and a switch assembly for ensuring that the steel ball is clamped in the annular groove or retreats from the annular groove is arranged in the working hole. The utility model has the advantages that make things convenient for the staff to install, dismantle and change the tire, improved work efficiency.
Description
Technical Field
The utility model belongs to the technical field of the fire-fighting robot technique and specifically relates to a special robot walking tire quick detach mechanism is related to.
Background
The fire-fighting robot is one of special robots and plays a role in fighting fire and rescuing more and more. The fire-fighting robot can replace fire-fighting rescue personnel to enter dangerous disaster accident sites such as flammable and explosive, toxic, anoxic and dense smoke for data acquisition, processing and feedback, so the fire-fighting robot is widely applied to fires of various large petrochemical enterprises, tunnels, subways, oil gas, toxic gas leakage explosion, subway collapse and other places.
The existing fire-fighting robot mainly comprises a chassis, a traveling mechanism, a driving assembly, a water cannon fire-extinguishing device, a control system and the like, wherein the traveling mechanism is mostly a crawler belt or a tire, the crawler belt is made of iron, and friction sparks can be generated in the traveling process, so that the existing fire-fighting robot is not suitable for flammable and explosive places such as a gas station; and what the tire adopted mostly is the fire-resistant tire that has certain anti high temperature function, even so, if the time overlength of putting out a fire the rescue causes the tire to be close to the fire source for a long time, still can cause the damage to the tire, leads to the unable normal walking of fire-fighting robot, then at this moment, then needs the scene to dismantle and change the tire.
Because every tire all is fixed through a plurality of bolts, still need to use supporting instrument to realize moreover when the dismouting, therefore very inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a special type robot walking tire quick detach mechanism, its advantage makes things convenient for the staff to install, dismantle and change the tire, has improved work efficiency.
The above technical purpose of the present invention can be achieved by the following technical solutions: a special robot walking tire quick-release mechanism comprises a driving shaft and a tire, wherein a sleeve which is hollow inside and has two open ends is vertically arranged on one side of a hub of the tire, a fixing ring which is convexly arranged towards the axial direction of the sleeve is fixedly connected to the inner wall of the sleeve, the fixing ring divides the interior of the sleeve into a mounting hole and a working hole, the working hole is close to the hub, a steel ring which extends towards the direction of the working hole is arranged in the fixing ring, a plurality of ball grooves which are distributed circumferentially are formed in the steel ring, steel balls are movably arranged in the ball grooves, and an annular groove for clamping the steel balls when the sleeve is slidably sleeved on the driving shaft is formed in the driving shaft;
and a switch assembly for ensuring that the steel ball is clamped in the annular groove or retreats from the annular groove is arranged in the working hole.
Through the technical scheme, when a worker installs the tire, the worker only needs to move the tire, the sleeve is sleeved on the driving shaft in a sliding mode, and then the steel ball is matched with the annular groove in a clamping mode through the switch assembly, so that the tire can be installed; when the tire is disassembled, the steel ball is withdrawn from the annular groove only through the switch assembly, and then the tire is moved away, so that the tire can be rapidly disassembled and replaced, and the working efficiency is greatly improved.
The utility model discloses further set up to: the switch assembly comprises a stop ring which is sleeved outside the steel ring in a sliding manner to press and hold the steel ball, a push ring which is integrally connected to the outer wall of the steel ring and extends towards the direction of the hub, and a spring which is sleeved outside the steel ring and two ends of which are respectively abutted against the fixed ring and the push ring;
an anti-drop ring for limiting one end of the retaining ring away from the fixing ring is fixedly connected to the outer wall of the steel ring;
the hub is provided with an operation hole which is convenient for a worker to press the push ring so as to drive the baffle ring to slide.
According to the technical scheme, during installation, the chassis is jacked up through hydraulic equipment, then the tire is lifted up, the key groove is aligned to the spline, and then the tire is pushed to enable the sleeve to be sleeved on the driving shaft in a sliding mode; when a thin shaft of the driving shaft extends into the steel ring and contacts with the steel ball, the steel ball can prevent the driving shaft from extending into the steel ring, at the moment, a worker presses the push ring towards the inside of the sleeve to enable the stop ring to be staggered with the ball groove, then the tire is continuously pushed to enable the steel ball to move along the direction far away from the axis of the steel ring under the influence of the pushing force until part of a ball body of the steel ball is extruded into a gap between the push ring and the steel ring, and the driving shaft is not influenced to be deep any more; when the end part of the sleeve is abutted against the shaft shoulder of the driving shaft, the push ring is loosened, at the moment, the baffle ring resets under the influence of the restoring force of the spring, and the second chamfer angle pushes the steel ball to return to the ball groove and is clamped with the annular groove in the resetting process, so that the fixed installation of the tire is realized;
when the tire is disassembled, the push ring is pressed, the baffle ring and the ball groove are staggered, and then the tire is dragged towards the direction far away from the driving shaft, so that the tire is very convenient and quick.
The utility model discloses further set up to: the gap between the inner wall of the push ring and the outer wall of the steel ring is larger than the depth of the steel ball extending into the annular groove and smaller than the diameter of the steel ball.
Through the technical scheme, the steel ball is prevented from being completely separated from the ball groove while the normal installation of the steel ball is ensured.
The utility model discloses further set up to: the driving shaft is a stepped shaft, the annular groove is formed in the thin shaft of the driving shaft, the thick shaft of the driving shaft is integrally connected with a spline extending along the axis direction of the spline, and the inner wall of the mounting hole is provided with a key groove matched with the spline.
Through above-mentioned technical scheme, guarantee that the tire can realize power transmission along with drive shaft synchronous revolution.
The utility model discloses further set up to: the steel ring is far away from be equipped with the ladder face on the outer wall of ball groove one end, the ladder face of steel ring with solid fixed ring's inner wall threaded connection.
Through above-mentioned technical scheme, during the installation, put into the working hole in proper order with spring and throw-out collar, then correspond the steel ball and install at every ball inslot, the in-process of installation can adopt the mode of gluing to carry out preliminary fixed, fixes the back, puts into the throw-out collar with the steel ring and threaded connection on solid fixed ring.
The utility model discloses further set up to: and a plurality of fixing holes for tools to be inserted and installed in a rotating manner are formed in the end face of the steel ring, which is close to one end of the hub.
Through above-mentioned technical scheme, during the operation, insert the shaft-like instrument to the fixed orifices, then rotate shaft-like instrument, make it drive steel ring threaded connection in the stationary ring, until flushing with the terminal surface of stationary ring.
The utility model discloses further set up to: and a flange plate fixed with the wheel hub is integrally connected to the outer wall of one end, close to the switch component, of the sleeve.
Through above-mentioned technical scheme, the sleeve passes through the ring flange to be fixed on wheel hub to the staff carries out the dismouting to it as required.
The utility model discloses further set up to: one end of the driving shaft, which is close to the annular groove, is provided with a first chamfer which is convenient to install.
Through above-mentioned technical scheme, when the thin axle of drive shaft stretched into the steel ring and contacted with the steel ball, the steel ball received the influence of thrust to remove towards the direction of keeping away from the steel ring axis along first chamfer, and the setting of first chamfer makes things convenient for the partial spheroid of steel ball to withdraw from the ball groove to further installation.
To sum up, the utility model discloses a beneficial technological effect does:
1. according to the quick-release structure for the tire, when a worker installs the tire, the worker only needs to move the tire, the sleeve is sleeved on the driving shaft in a sliding mode, and then the steel ball is matched with the annular groove in a clamping mode through the switch assembly, so that the tire can be installed; when the tire is disassembled, the steel ball is withdrawn from the annular groove only through the switch assembly, and then the tire is moved away, so that the tire can be rapidly disassembled and replaced, and the working efficiency is greatly improved;
2. the arrangement of the spline and the key groove ensures that the tire can synchronously rotate along with the driving shaft, and power transmission is realized;
3. the arrangement of the fixing hole facilitates the installation of the steel ring by workers;
4. the first chamfer is arranged to enable the steel ball to move towards the direction far away from the axis of the steel ring under the influence of the thrust when the thin shaft of the driving shaft extends into the steel ring and contacts with the steel ball, so that part of the ball body exits from the ball groove for further installation.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a cross-sectional view showing the internal structure of the sleeve and cooperating with the switch assembly;
FIG. 3 is an enlarged schematic view at A in FIG. 2;
FIG. 4 is a schematic structural view showing a stepped surface;
FIG. 5 is a schematic view of a structure embodying a first chamfer;
fig. 6 is a schematic structural view showing the tire assembly.
In the figure, 1, a drive shaft; 11. an annular groove; 12. a first chamfer; 13. a spline; 2. a tire; 21. a hub; 211. an operation hole; 3. a sleeve; 31. a fixing ring; 32. mounting holes; 321. a keyway; 33. a working hole; 4. a flange plate; 5. a steel ring; 51. a step surface; 52. a fixing hole; 53. a ball groove; 54. the anti-drop ring; 6. a steel ball; 7. a switch assembly; 71. a baffle ring; 72. a push ring; 73. a spring; 74. and (7) second chamfering.
Detailed Description
Referring to fig. 1, for the utility model discloses a special type robot walking tire quick detach mechanism, including drive shaft 1 and tire 2, wherein, drive shaft 1 installs on the chassis, and one side of wheel hub 21 is equipped with inside cavity and both ends perpendicularly and is open sleeve 3, and it is close to an organic whole and is connected with ring flange 4 on the outer wall of one end, and sleeve 3 passes through ring flange 4 to be fixed on wheel hub 21.
Referring to fig. 2 and 4, a fixing ring 31 protruding toward the axial direction of the sleeve 3 is fixed to the inner wall of the sleeve 3, and divides the interior of the sleeve 3 into a mounting hole 32 and a working hole 33 communicating with each other, wherein the working hole 33 is provided near the hub 21. The fixing ring 31 is internally provided with a steel ring 5 extending towards the direction of the working hole 33, the outer wall of one end, close to the steel ring 5, of the steel ring 5 is provided with a stepped surface 51 with the same width as that of the fixing ring 31, and the steel ring 5 is in threaded connection with the inner wall of the fixing ring 31 through the stepped surface 51.
In order to avoid the situation that the steel ring 5 cannot be normally installed due to no holding after extending into the sleeve 3, a plurality of fixing holes 52 are formed in the end face of one end, close to the hub 21, of the steel ring 5, during operation, a rod-shaped tool is inserted into the fixing holes 52, and then the rod-shaped tool is rotated to drive the steel ring 5 to be in threaded connection with the fixing ring 31 until the rod-shaped tool is flush with the end face of the fixing ring 31.
Referring to fig. 2 and 4, a plurality of ball grooves 53 distributed circumferentially are formed in the outer wall of the steel ring 5 in the working hole 33, the ball grooves 53 penetrate through the steel ring 5, a steel ball 6 is movably placed in each ball groove 53, and the diameter of each steel ball 6 is larger than the opening of the ball groove 53 close to one side of the inner wall of the steel ring 5 and smaller than the opening of the ball groove 53 close to one side of the outer wall of the steel ring 5, so that the steel ball 6 is prevented from falling into the steel ring 5 during normal installation.
Referring to fig. 5, the driving shaft 1 is a stepped shaft, the inner diameter of the sleeve 3 (see fig. 2) is matched with the outer diameter of the thick shaft of the driving shaft 1, the inner diameter of the steel ring 5 is matched with the outer diameter of the thin shaft of the driving shaft 1, an annular groove 11 is formed in the thin shaft of the driving shaft 1, and when the sleeve 3 is slidably sleeved on the driving shaft 1, the steel ball 6 is clamped in the annular groove, so that the tire 2 is mounted. A first chamfer 12 is provided at the end of the drive shaft 1 adjacent the annular recess 11 to facilitate mounting.
Referring to fig. 2 and 5, in order to ensure that the tire 2 can rotate synchronously with the driving shaft 1, the thick shaft of the driving shaft 1 is integrally connected with the spline 13 extending along the axial direction, the inner wall of the mounting hole 32 is provided with a key groove 321 matched with the spline 13, and the two are mutually matched to realize power transmission.
A switch component 7 is arranged in the working hole 33 and used for ensuring that the steel ball 6 is clamped in the annular groove 11 or exits from the annular groove 11, namely, in an installation state or a disassembly state. The switch component 7 comprises a retaining ring 71 which is slidably sleeved outside the steel ring 5 to press and hold the steel ball 6, a push ring 72 which is integrally connected to the outer wall of the steel ring 5 and extends towards the hub 21 (see fig. 1), and a spring 73 which is sleeved outside the steel ring 5 and two ends of which are respectively abutted against the fixed ring 31 and the push ring 72, wherein the push ring 72 extends out of the working hole 33 to the outside, the outer diameter of the push ring 72 is matched with the inner diameter of the working hole 33, and the retaining ring 71 is shielded at the ball groove 53 under the action of the spring 73 under the normal condition. The clearance between the inner wall of the push ring 72 and the outer wall of the steel ring 5 is larger than the depth of the steel ball 6 extending into the annular groove 11 and smaller than the diameter of the steel ball 6, and the steel ball 6 is prevented from completely separating from the ball groove 53 while the steel ball 6 is ensured to be normally installed under the above conditions.
Referring to fig. 2 and 3, a drop-proof ring 54 is fixedly connected to a position of the outer wall of the steel ring 5 corresponding to one end of the retaining ring 71 away from the fixing ring 31, and is used for limiting the retaining ring 71 and preventing the retaining ring 71 from dropping off from the steel ring 5. One end of the retaining ring 71 close to the anti-drop ring 54 is provided with a second chamfer 74 which facilitates the steel ball 6 to return to the ball groove 53.
Referring to fig. 6, an operation hole 211 is formed in the hub 21 at a position corresponding to the position where the push ring 72 extends out of the sleeve 3, so that a worker can press the push ring 72 to drive the stopper ring 71 to slide along the outer wall of the steel ring 5.
Referring to fig. 5 and 6, during installation, the chassis is jacked up by hydraulic equipment, then the tire 2 is lifted up, the key groove 321 is aligned with the spline 13, and then the tire 2 is pushed to enable the sleeve 3 to be sleeved on the driving shaft 1 in a sliding mode; when a thin shaft of the driving shaft 1 extends into the steel ring 5 and contacts with the steel ball 6 (see fig. 2), the steel ball 6 can prevent the driving shaft 1 from extending into the steel ring, at the moment, a worker presses the push ring 72 towards the inside of the sleeve 3 to make the stop ring 71 staggered with the ball groove 53 (see fig. 4), and then the tire 2 is continuously pushed, so that the steel ball 6 moves along the direction away from the axis of the steel ring 5 along the first chamfer 12 under the influence of the pushing force until part of the ball body of the steel ball 6 is extruded into a gap between the push ring 72 and the steel ring 5 and the penetration of the driving shaft 1 is not influenced any more; when the end of the sleeve 3 abuts against the shaft shoulder of the driving shaft 1, the push ring 72 is loosened, at the moment, the baffle ring 71 resets under the influence of the restoring force of the spring 73, and the second chamfer 74 pushes the steel ball 6 to return to the ball groove 53 and be clamped with the annular groove 11 in the resetting process, so that the fixed installation of the tire 2 is realized.
Referring to fig. 4 and 6, during disassembly, the chassis is jacked up by hydraulic equipment, then the push ring 72 is pressed, the stop ring 71 is staggered with the ball groove 53, and then the tire 2 is pulled in a direction away from the driving shaft 1, so that the disassembly is very convenient and rapid.
Compared with the mode of bolt fixing in the prior art, the tire quick-release structure in the application enables a worker to install the tire 2 only by moving the tire 2, slidably sleeving the sleeve 3 on the driving shaft 1, and then enabling the steel ball 6 to be in clamping fit with the annular groove 11 through the switch assembly 7; when the tire is disassembled, the steel ball 6 is only required to be withdrawn from the annular groove 11 through the switch component 7, and then the tire 2 is moved away, so that the tire 2 can be rapidly disassembled and replaced, and the working efficiency is greatly improved.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides a special type robot walking tire quick detach mechanism which characterized in that: comprises a driving shaft (1) and a tyre (2), one side of a wheel hub (21) of the tyre (2) is vertically provided with a sleeve (3) which is hollow inside and has two open ends, a fixing ring (31) which is convexly arranged towards the axis direction of the sleeve (3) is fixedly connected on the inner wall of the sleeve (3), the fixed ring (31) divides the interior of the sleeve (3) into a mounting hole (32) and a working hole (33), the working hole (33) is arranged close to the hub (21), a steel ring (5) extending towards the direction of the working hole (33) is arranged in the fixing ring (31), the steel ring (5) is provided with a plurality of ball grooves (53) distributed in a circumferential manner, a steel ball (6) is movably placed in the ball groove (53), and an annular groove (11) for clamping the steel ball (6) when the sleeve (3) is slidably sleeved on the driving shaft (1) is formed in the driving shaft (1);
the switch component (7) which is used for ensuring that the steel ball (6) is clamped in the annular groove (11) or retreats from the annular groove (11) is arranged in the working hole (33).
2. The special robot walking tire quick release mechanism as claimed in claim 1, characterized in that: the switch assembly (7) comprises a stop ring (71) which is sleeved outside the steel ring (5) in a sliding manner to press and hold the steel ball (6), a push ring (72) which is integrally connected to the outer wall of the steel ring (5) and extends towards the direction of the hub (21), and a spring (73) which is sleeved outside the steel ring (5) and two ends of which are respectively abutted against the fixed ring (31) and the push ring (72);
an anti-drop ring (54) for limiting one end of the baffle ring (71) far away from the fixing ring (31) is fixedly connected to the outer wall of the steel ring (5);
the hub (21) is provided with an operation hole (211) which is convenient for a worker to press the push ring (72) to drive the baffle ring (71) to slide.
3. The special robot walking tire quick release mechanism as claimed in claim 2, characterized in that: the gap between the inner wall of the push ring (72) and the outer wall of the steel ring (5) is larger than the depth of the steel ball (6) extending into the annular groove (11) and smaller than the diameter of the steel ball (6).
4. The special robot walking tire quick release mechanism as claimed in claim 1, characterized in that: the driving shaft (1) is a stepped shaft, the annular groove (11) is formed in the thin shaft of the driving shaft (1), the thick shaft of the driving shaft (1) is integrally connected with a spline (13) extending along the axis direction of the spline, and a key groove (321) matched with the spline (13) is formed in the inner wall of the mounting hole (32).
5. The special robot walking tire quick release mechanism as claimed in claim 1, characterized in that: keep away from steel ring (5) be equipped with ladder face (51) on the outer wall of ball groove (53) one end, the ladder face (51) of steel ring (5) with the inner wall threaded connection of solid fixed ring (31).
6. The special robot walking tire quick release mechanism as claimed in claim 5, characterized in that: and a plurality of fixing holes (52) for tools to be inserted and installed in a driving and rotating manner on the end face of one end, close to the hub (21), of the steel ring (5) are formed.
7. The special robot walking tire quick release mechanism as claimed in claim 1, characterized in that: the outer wall of the sleeve (3) close to one end of the switch component (7) is integrally connected with a flange plate (4) fixed with the hub (21).
8. The special robot walking tire quick release mechanism as claimed in claim 1, characterized in that: one end of the driving shaft (1) close to the annular groove (11) is provided with a first chamfer (12) which is convenient to mount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921297007.9U CN210257878U (en) | 2019-08-09 | 2019-08-09 | Special robot walking tire quick detach mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921297007.9U CN210257878U (en) | 2019-08-09 | 2019-08-09 | Special robot walking tire quick detach mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210257878U true CN210257878U (en) | 2020-04-07 |
Family
ID=70016970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921297007.9U Active CN210257878U (en) | 2019-08-09 | 2019-08-09 | Special robot walking tire quick detach mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210257878U (en) |
-
2019
- 2019-08-09 CN CN201921297007.9U patent/CN210257878U/en active Active
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220915 Address after: North Section of Xinghuo Road, Economic and Technological Development Zone, Shenmu City, Yulin City, Shaanxi Province 719000 Patentee after: Shenmu Lingtian Intelligent Technology Co.,Ltd. Address before: 101149 building B, No.20, 25 Jingsheng south 2nd Street, Jinqiao Science and technology industrial base, Tongzhou Park, Zhongguancun Science and Technology Park, Tongzhou District, Beijing Patentee before: Beijing Lingtian Intelligent Equipment Group Co.,Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20240115 Address after: Area W, 1st Floor, Building A7, Safety Technology Industrial Park, East of Yinshan Road and South of Lijiang Road, Second Industrial Park, Xuzhou High-tech Industrial Development Zone, Xuzhou City, Jiangsu Province, 221100 Patentee after: Xuzhou Luban Intelligent Technology Co.,Ltd. Address before: North Section of Xinghuo Road, Economic and Technological Development Zone, Shenmu City, Yulin City, Shaanxi Province 719000 Patentee before: Shenmu Lingtian Intelligent Technology Co.,Ltd. |