CN111845206B - Explosion-proof energy feedback tire - Google Patents
Explosion-proof energy feedback tire Download PDFInfo
- Publication number
- CN111845206B CN111845206B CN202010844505.1A CN202010844505A CN111845206B CN 111845206 B CN111845206 B CN 111845206B CN 202010844505 A CN202010844505 A CN 202010844505A CN 111845206 B CN111845206 B CN 111845206B
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- tire body
- piston
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- 238000004804 winding Methods 0.000 claims description 3
- 238000004880 explosion Methods 0.000 claims 2
- 230000008713 feedback mechanism Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 230000006698 induction Effects 0.000 description 3
- 238000007872 degassing Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 208000002697 Tooth Abrasion Diseases 0.000 description 1
- 208000004188 Tooth Wear Diseases 0.000 description 1
- 230000037237 body shape Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C5/00—Inflatable pneumatic tyres or inner tubes
- B60C5/20—Inflatable pneumatic tyres or inner tubes having multiple separate inflatable chambers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C17/00—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Tires In General (AREA)
Abstract
The invention relates to the technical field of new energy automobiles and discloses a novel explosion-proof energy-feedback tire, which comprises a tire body, a rim shaft, two rings of stator rings are fixed on two sides of the rim shaft, a rotor gear ring is arranged between the two rings of stator rings through a roller bearing, the tire body is equally divided into at least 12 pneumatic cylinders, the pneumatic cylinders are arranged along the circumference of the tire body and are mutually independent, a piston assembly and a return spring are respectively arranged in each pneumatic cylinder, the piston assembly is arranged at the end part of the pneumatic cylinder facing to the circle center, ratchet teeth are arranged at the outer edge of the rotor gear ring, and when the tire body is stressed and extruded, the piston assembly is in matched contact with the inclined surfaces of the ratchet teeth. Compared with the prior art, the pneumatic cylinders are used as component parts of the energy feedback mechanism, so that the problems of unstable internal air pressure and the like caused by tire puncture are effectively solved, and the automobile can still normally run even if the tire leaks due to tire puncture and the like in running.
Description
Technical Field
The invention relates to the technical field of new energy automobiles, in particular to an explosion-proof energy feedback tire.
Background
Along with the rapid development of new energy automobiles such as electric automobiles, hybrid electric automobiles and the like, the led concepts of high efficiency, energy conservation, no pollution and the like have profoundly influenced the development mode of the traditional automobile industry.
If the energy utilization rate can be improved, the idle work generated in the running process can be reduced, and the energy generated in the running process of the automobile can be fully used. Considering that the deformation of the automobile tire in the running process is frequently ignored, if the automobile tire is reasonably recovered and improved, the generated electric energy can be supplemented for the storage battery, and the recycling of idle work is realized.
With the increasingly tight connection between automobiles and people in daily life, whether the automobiles run safely is particularly outstanding, and automobile tires are the only parts contacted with the ground and are the key points of the running safety of the automobiles. In the running process of an automobile, the pressure inside the tire is often caused to be problematic due to tire puncture, over-deceleration strip and the like, so that the phenomena of tire burst and the like are caused, and the safety of a driver and passengers is endangered. At present, the vacuum tire on the market can not effectively avoid tire burst risk because of the integration inside.
Disclosure of Invention
The invention aims to: aiming at the problems in the prior art, the invention provides the explosion-proof energy feedback tire, which is used as a component part of an energy feedback mechanism through the design of a plurality of pneumatic cylinders, and simultaneously effectively solves the problems of unstable internal air pressure and the like caused by tire puncture, thereby ensuring that the automobile can still normally run even if the tire leaks due to tire puncture and the like during running.
The technical scheme is as follows: the invention provides an explosion-proof energy feedback tire, which comprises a tire body and a rim shaft, wherein two rings of stator rings are fixed on two sides of the rim shaft, a rotor gear ring is arranged between the two rings of stator rings through a roller bearing, the tire body is divided into at least 12 pneumatic cylinders uniformly, the pneumatic cylinders are arranged along the circumference of the tire body and are mutually independent, a piston assembly and a return spring are arranged in each pneumatic cylinder, the piston assembly is arranged at the end part of one side of the pneumatic cylinder facing to the circle center, ratchet teeth are arranged at the outer edge of the rotor gear ring, and when the tire body is extruded under the stress, the piston assembly is in matched contact with the inclined surfaces of the ratchet teeth.
Further, the piston assembly comprises a piston cylinder, a piston rod and a push rod head; the piston cylinder is arranged at the end part of the pneumatic cylinder facing to the circle center, the piston rod is positioned in the piston cylinder and slides in the piston cylinder, one end of the piston rod, which is close to the circle center, is fixed with the push rod head, the other end of the piston rod is provided with a return spring, and the other end of the return spring is fixed at the bottom end of the pneumatic cylinder.
Further, the pneumatic cylinder is further provided with a pair of one-way pneumatic valves, the one-way pneumatic valves are arranged at the end part of the pneumatic cylinder, which is close to the center of the circle, and the exhaust directions of the one-way pneumatic valves are opposite.
Further, one side surface of the ratchet teeth is an inclined surface, an included angle between the inclined surface and the horizontal surface is smaller than 45 degrees, the push rod head is parallel to one side surface corresponding to the inclined surface of the ratchet teeth, and when the piston rod pushes the push rod head to move towards the circle center, the inclined surface of the push rod head contacts and extrudes the inclined surface of the ratchet teeth.
Further, the included angle of the top ends of the ratchet teeth is 90 to 120 degrees, and the length of one side inclined surface of the ratchet teeth, which is contacted with the push rod head, is longer than that of the other side inclined surface.
Further, arc-shaped chamfers are arranged at the top ends of the ratchet teeth and the push rod head.
Further, a plurality of small holes are further formed in the rotor gear ring at intervals, and coil windings are arranged on the small holes.
Further, the number of the pneumatic cylinders is 12 to 24.
Further, the number of the pneumatic cylinders is 16.
Advantageous effects
1. The invention is provided with a plurality of pneumatic cylinders which are mutually independent and are used for sealing gas and generating different pressures with the space outside the pneumatic cylinders in the tyre body tyre, and the piston assembly is pushed to move up and down by the pressure difference. The rotor gear ring is made of rotor materials, ratchet teeth are machined on the outer side of the rotor gear ring, and relative movement is generated relative to the stator ring in the working process of the rotor gear ring, so that magnetic induction wires are cut, and current is generated.
2. When the pneumatic cylinder is contacted with the ground, the pressure in the cylinder is higher than the pressure in the outer space of the pneumatic cylinder in the tyre body tyre, the piston rod is pushed to move upwards, and when the pneumatic cylinder is separated from the ground, the piston rod is pulled by the return spring to move downwards rapidly. The return spring is arranged at the lower half section of the piston rod, when the pneumatic cylinder is in contact with the ground, the piston rod pushes the push rod head to be in contact with the ratchet teeth for extrusion, the return spring deforms and stores elastic potential energy, and when the push rod head is separated from the ratchet teeth, the elastic potential energy is released, and the piston rod is pulled to move downwards while returning to the original position.
3. The invention is provided with a pair of one-way pneumatic valves with opposite exhaust directions, which has influence factors such as speed reduction zones, pits, stones and the like on uneven pavement, the tire body shape is excessively large, one of the one-way pneumatic valves is opened, and the space of the pneumatic cylinder is exhausted; when the pressure of the pneumatic cylinder exceeds a preset threshold value, the valve is opened to reduce pressure, so that the pneumatic cylinder is prevented from being damaged due to the fact that the pressure of the pneumatic cylinder is too high. When the automobile is in air leakage, the automobile can be sealed into an individual through the one-way pneumatic valve, and the automobile is not involved in work any more, so that the normal operation of the automobile is ensured.
4. The invention sets the arc chamfer angles on the ratchet teeth and the top of the pushing rod head to provide larger pushing component force and reduce the inter-tooth abrasion in the movement process.
Drawings
FIG. 1 is a schematic view of a tire body according to the present invention;
FIG. 2 is a schematic side view of a rim in accordance with the present invention;
FIG. 3 is an enlarged view of FIG. 1 at A;
FIG. 4 is a schematic view of a tire display of the present invention with the vehicle at rest;
FIG. 5 is a schematic illustration of the working cylinder extrusion of the tire of the present invention;
FIG. 6 is a schematic view of the tire body of the present invention continuing to rotate on the basis of FIG. 4;
Fig. 7 is a schematic view of a tire according to the present invention in the case where one of the pneumatic cylinders leaks.
The tire comprises a 1-tire body, a 2-pneumatic cylinder, a 3-piston cylinder, a 4-push rod head, a 5-piston rod, 6-ratchet teeth, a 7-return spring, 8-small holes, a 9-rotor gear ring, a 10-one-way pneumatic valve A, a 11-one-way pneumatic valve B, a 12-stator ring, a 13-roller bearing, a 14-arc chamfer, a 15-notch and a 16-rim shaft.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Referring to fig. 1 to 3, the explosion-proof energy feedback tire disclosed by the invention comprises a tire body 1, wherein the tire body 1 is uniformly divided into 16 mutually independent pneumatic cylinders 2, and the tire body 1 is divided into gas in the pneumatic cylinders 2 and gas outside the pneumatic cylinders 2 in the tire body. The outer circumferential wall of the tire body 1 is the bottom of each pneumatic cylinder 2, and the air outside the pneumatic cylinders 2 in the tire body is positioned between the pneumatic cylinders 2 and the rim. The tire also comprises a rim shaft, two rings of stator rings 12 are fixed on two sides of the rim shaft, and a rotor gear ring 9 is arranged between the two rings of stator rings 12 through a roller bearing 13, see figure 2.
The 16 pneumatic cylinders 2 are arranged along the circumference of the tire body 1, the pneumatic cylinders 2 are mutually independent, a piston assembly and a return spring 7 are respectively arranged in each pneumatic cylinder 2, the piston assembly is arranged at the end part of the pneumatic cylinder 2 facing to the circle center side, the piston assembly comprises a piston cylinder 3, a piston rod 5 and a push rod head 4, the piston rod 5 can slide in the piston cylinder 3 along the radial direction of the tire body, the push rod head 4 is arranged on the piston rod 5, ratchet teeth 6 are arranged at the outer edge of a rotor gear ring 9, and therefore, air outside the pneumatic cylinder 2 in the tire body is positioned between the pneumatic cylinder 2 and the ratchet teeth 6. When the tyre body 1 is pressed by force, the push rod head 4 of the piston assembly is in matched contact with the inclined surface of the ratchet wheel teeth 6, and the push rod head 4 is used for pushing the ratchet wheel teeth 6 on the rotor gear ring 9.
The return spring 7 is arranged between the piston assembly and the pneumatic cylinder 2, namely one end of the return spring is fixed at the bottom end of the piston rod 5, and the other end of the return spring is fixed at the bottom surface of the pneumatic cylinder 2.
The tire is provided with two one-way pneumatic valves, which are respectively marked as one-way pneumatic valve A10 and one-way pneumatic valve B11. The one-way pneumatic valve A10 and the one-way pneumatic valve B11 are used for adjusting the relative relation between the internal air pressure of the air cylinder 2 and the air pressure of the outer space of the air cylinder 2 in the tyre body 1. Among them, the one-way air-operated valve a10 functions to exhaust air from the outside of the cylinder block 2 to the inside of the cylinder block 2, and the one-way air-operated valve B11 functions to exhaust air from the inside of the cylinder block 2 to the inside of the tire body 1 outside the cylinder block 2.
The ratchet teeth 6 are similar to a ratchet in appearance, one side surface of the ratchet teeth 6 is an inclined surface, an included angle between the inclined surface and a horizontal plane is smaller than 45 degrees, the push rod head 4 is parallel to one side surface corresponding to the inclined surface of the ratchet teeth 6, and when the piston rod 5 pushes the push rod head 4 to move towards the circle center, the inclined surface of the push rod head 4 contacts and extrudes the inclined surface of the ratchet teeth 6. The included angle of the top end of the ratchet teeth 6 is 90 to 120 degrees, and the length of one side inclined surface of the ratchet teeth 6 contacted with the push rod head 4 is longer than that of the other side inclined surface.
In this embodiment, the top of the ratchet teeth 6 and the top of the pusher head 6 are chamfered by machining to reduce tooth-to-tooth wear during movement to provide a greater pushing force component.
In the embodiment, 32 ratchet teeth 6 are arranged on the rotor gear ring 9, the rotor gear ring 9 is fixed by a cylindrical roller bearing 13 and is arranged in the middle of the outer ring of the rim, so that the rotor gear ring 9 and components such as the tire body 1 can keep different rotating speeds, and a plurality of small holes 8 are drilled on the side surface of the rotor gear ring 9 and are used for installing coil windings for fixing a rotor. As shown in fig. 2, a movable rotor gear ring 9 is mounted in the middle of the rim shaft through a cylindrical roller bearing 13, and two stator rings 12 are fixed on both sides along the periphery of the hub.
Referring to fig. 4, 5 and 6, when the automobile is at rest (fig. 4), the tire body 1 is deformed due to the weight of the automobile, but the rotor gear ring 9 and the stator ring 12 do not move relatively, so that no current is generated.
At the beginning of the operation, the vehicle starts to move from a stationary state, and during the contact of the first pneumatic cylinder 2 with the ground (fig. 5), friction generates heat with the ground, while the volume of the pneumatic cylinder 2 is relatively small, and according to the ideal gas pressure formula pv=nrt (p is the gas pressure, V is the gas volume, n is the amount of gas substance, R is a constant, T is the temperature), the internal gas temperature rises, and the volume decreases, so the internal gas pressure rises. The pressure difference is generated with the air in the tyre body outside the pneumatic cylinder 2, the piston rod 5 is pushed by the pressure difference to slide in the piston cylinder 3 towards the direction close to the ratchet teeth 6, the push rod head 4 fixed at the upper part of the piston rod 5 is in contact with the ratchet teeth 6 on the rotor gear ring 9, and applies a force to the ratchet teeth 6, the force is decomposed into a component force which is upward along the contact surface of the ratchet teeth 6 and is used for overcoming the friction force, and the other component force is perpendicular to the contact surface, so that the rotor gear ring 9 is pushed to move. When the contact area is reduced by the peak value, the pressed return spring 7 rapidly pulls the putter head 4 back. The one-time working cycle is as follows: the push rod head 4 on the piston rod 5 also completes the process from no contact to providing the maximum pushing force and then to the separation in the process that the contact area of the first pneumatic cylinder 2 and the ground is from 0 to the maximum to 0, and the second pneumatic cylinder 2 also enters the working mode along with the end of the contact of the first pneumatic cylinder 2 and the ground. The rotor gear ring 9 is pushed to move periodically, so that the rotor gear ring 9 and the tire body 1 are ensured to be in a moving state, but the speeds are different, namely: there is a relative speed. The stator ring 12 is fixedly arranged on the rim and has the same speed as the tire body 1, so that the stator ring 12 and the rotor gear ring 9 have different speeds, and in the working process, the magnetic induction line can be cut all the time to generate current. The current is stored in the vehicle-mounted storage battery through the lead, the current generated by cutting the magnetic induction line and the current stored in the battery are all the prior art, and are not important points to be protected in the invention, and the description is omitted herein.
Because of friction and other factors, the relative speed of the rotor gear ring 9 relative to the tire body 1 and the stator ring 12 on the rim is controlled, but the ratio is not excessively large because the tire speed is increased.
Considering the uneven road surface and the influence factors such as deceleration strips, pits, stones and the like, the deformation of the tire body 1 is overlarge, and the unidirectional pneumatic valve B11 is additionally arranged at the edge of each pneumatic cylinder 2. When the deformation is too large, the pressure in the cylinder body 2 is too large, the threshold value of the one-way pneumatic valve B11 is triggered, the one-way pneumatic valve B11 is automatically opened to exhaust the space of the in-tire degassing and pressing cylinder 2, if the one-way pneumatic valve A10 detects that the space pressure of the in-tire degassing and pressing cylinder 2 is too large, the threshold value is triggered, the one-way pneumatic valve A10 is automatically opened to relieve the pressure problem, prevent the pressure from being too large, damage to the tire body 1 and even burst.
When sharp objects such as nails appear on the road surface, the tire is pricked to lead the tire body 1 to be provided with a notch 15, air leakage occurs, and referring to fig. 7, namely: one cylinder 2 starts to leak air. The pressure in the space of the pneumatic cylinder 2 in the tire reversely pushes the pushing rod head 4 of the tire puncture to be tightly attached to the piston assembly, and the sealing effect of the piston cylinder 3 and the piston rod 5 in the piston assembly is good, so that the air cannot flow inwards. And the one-way pneumatic valve B11 needs to reach a threshold value to be opened for inflow of gas. In summary, the inside of the tire body 1 no longer supplies air to the air cylinder 2 with the air leakage hole, and the air cylinder does not participate in the work any more, and the automobile can still run normally.
The foregoing embodiments are merely illustrative of the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the present invention and to implement the same, not to limit the scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (7)
1. The anti-explosion energy feedback tire comprises a tire body (1) and a rim shaft (16), wherein two rings of stator rings (12) are fixed on two sides of the rim shaft (16), a rotor gear ring (9) is arranged between the two rings of stator rings (12) through a roller bearing (13), and the anti-explosion energy feedback tire is characterized in that the tire body (1) is equally divided into at least 12 pneumatic cylinders (2), the pneumatic cylinders (2) are arranged along the circumference of the tire body (1) and mutually independent, a piston assembly and a return spring (7) are arranged in each pneumatic cylinder (2), the piston assembly is arranged at the end part of the pneumatic cylinder (2) facing to the circle center side, ratchet teeth (6) are arranged at the outer edge of the rotor gear ring (9), and when the tire body (1) is stressed and extruded, the piston assembly is in matched contact with the inclined surfaces of the ratchet teeth (6);
The piston assembly comprises a piston cylinder (3), a piston rod (5) and a push rod head (4); the piston cylinder (3) is arranged at the end part of the pneumatic cylinder (2) facing the circle center, the piston rod (5) is positioned in the piston cylinder (3) and slides along the radial direction of the tire body (1), one end of the piston rod (5) close to the circle center is fixed with the push rod head (4), the other end of the piston rod is provided with a return spring (7), and the other end of the return spring (7) is fixed at the bottom end of the pneumatic cylinder (2);
The pneumatic cylinder (2) is also provided with a pair of one-way pneumatic valves which are respectively arranged at the end parts of the pneumatic cylinder (2) close to the center of the circle, and the exhaust directions of the pair of one-way pneumatic valves are opposite.
2. The explosion-proof energy feedback tire according to claim 1, wherein one side surface of the ratchet teeth (6) is an inclined surface, an included angle between the inclined surface and a horizontal plane is smaller than 45 degrees, the push rod head (4) is parallel to one side surface corresponding to the inclined surface of the ratchet teeth (6), and when the piston rod (5) pushes the push rod head (4) to slide towards the circle center direction, the inclined surface of the push rod head (4) contacts and presses with the inclined surface of the ratchet teeth (6).
3. A run-flat energy feedback tyre according to claim 2, characterized in that the ratchet teeth (6) have an included angle of 90 to 120 degrees at their tip and that the length of the bevel on one side of the ratchet teeth (6) in contact with the pusher head (4) is longer than the length of the bevel on the other side.
4. A run-flat energy feedback tyre according to claim 3, characterized in that the ratchet teeth (6) and the pusher head (4) are provided with arc-shaped chamfers (14) at their top ends.
5. A run-flat energy feed tyre according to any one of claims 1 to 4, characterized in that the rotor gear ring (9) is further provided with a number of small holes (8) at intervals, on which coil windings are mounted.
6. A run-flat energy feedback tyre according to any one of claims 1 to 4, characterized in that the number of pneumatic cylinders (2) is 12 to 24.
7. A run-flat energy feedback tyre according to any one of claims 1 to 4, characterized in that the number of pneumatic cylinders (2) is 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010844505.1A CN111845206B (en) | 2020-08-20 | 2020-08-20 | Explosion-proof energy feedback tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010844505.1A CN111845206B (en) | 2020-08-20 | 2020-08-20 | Explosion-proof energy feedback tire |
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| Publication Number | Publication Date |
|---|---|
| CN111845206A CN111845206A (en) | 2020-10-30 |
| CN111845206B true CN111845206B (en) | 2024-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010844505.1A Active CN111845206B (en) | 2020-08-20 | 2020-08-20 | Explosion-proof energy feedback tire |
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| CN (1) | CN111845206B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TR202104766A2 (en) * | 2021-03-15 | 2021-07-26 | Fazil Serdar Guerel | AN ELECTRICITY GENERATION SYSTEM FOR VEHICLES WITH PNEUMATIC TIRES THAT CAN BE MOUNTED AND DISASSEMBLED AS ADDITION TO THE PRESSURIZED SECTION BETWEEN THE PNEUMATIC TIRE AND THE RIM |
| CN114379291B (en) * | 2022-03-24 | 2022-06-07 | 山东玲珑轮胎股份有限公司 | Safety locking device for inner support of tire |
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