Motor tricycle with all-terrain adaptive capacity

By installing detachable anti-slip components on the drive wheels of the three-wheeled motorcycle and utilizing the compressed gas buffer design in the damping chamber, the problem of insufficient grip of the three-wheeled motorcycle in complex terrain is solved, improving passability and riding comfort, and simplifying maintenance operations.

CN121697377APending Publication Date: 2026-03-20ZHEJIANG CHUANBAO NEW ENERGY LOCOMOTIVE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-20
Publication Date
2026-03-20

AI Technical Summary

Technical Problem

Existing three-wheeled motorcycles lack sufficient traction on muddy, soft, or slippery roads, making them prone to skidding and getting stuck. Traditional anti-skid devices are cumbersome to install or costly, making them difficult to popularize on ordinary agricultural three-wheeled vehicles.

Method used

A detachable, cushioning-equipped anti-slip component, including anti-slip parts and support parts, is installed on the drive wheel. The cushioning is achieved by compressed gas in the damping chamber. Combined with a pneumatic linkage locking mechanism, the cushioning performance can be quickly disassembled and adjusted.

Benefits of technology

It significantly improves the vehicle's grip and ability to get out of trouble in complex terrain, improves driving comfort, reduces structural impact damage, balances passability and economy, integrates on-board inflation and tire cleaning devices, and enhances overall adaptability.

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Abstract

The motor tricycle with the all-terrain adaptive capacity comprises a rear wheel, the rear wheel comprises a tire and a hub, and a plurality of anti-skid assemblies arranged around the center of a wheel axle are detachably arranged on the rear wheel; the anti-skid assembly comprises an anti-skid piece matched with the outer wall of the tire and a supporting piece connected with the hub. One side of the anti-skid piece is in damping sliding connection with the supporting piece, a damping cavity is formed in the anti-skid piece, the damping cavity is filled with compressed gas, one end of the supporting piece is arranged in the damping cavity in a sliding mode to form a telescopic part, and damping stretching and retracting are achieved through extrusion buffering of the supporting piece and the compressed gas in the cavity; the detachable anti-skid assembly with the air pressure buffering function is additionally arranged on the driving wheel, the road holding capacity and the escape capacity of the tricycle in complex terrains such as muddy terrains and soft terrains are remarkably improved, and the problem that a traditional tricycle is prone to slipping and being trapped is effectively solved.
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Description

Technical Field

[0001] This invention relates to the field of three-wheeled motorcycle technology, and in particular to a three-wheeled motorcycle with all-terrain adaptability. Background Technology

[0002] Three-wheeled motorcycles are widely used in agricultural production, cargo transportation, and short-distance transportation due to their simple structure, strong carrying capacity, and flexible operation. Especially in unpaved roads or muddy areas such as farmland, orchards, and construction sites, three-wheeled motorcycles are often used as the main means of transportation for carrying crops, fertilizers, or other materials.

[0003] However, existing three-wheeled motorcycles generally suffer from insufficient traction and are prone to slipping and getting stuck when driving on complex terrain, especially muddy, soft, or slippery surfaces. Their traditional tire tread designs are mostly optimized for paved roads, but in mud, the uneven distribution of ground pressure causes the tread to easily become clogged with mud, resulting in a significant decrease in grip. Furthermore, as the main drive wheel, the rear wheel's continuous spinning in mud further exacerbates the problem, making it difficult for the vehicle to get out of trouble. This not only affects transportation efficiency but also increases the driver's workload and safety hazards.

[0004] Chinese patent CN206086231U discloses a tire anti-skid device, which involves setting several support frames on the outer wall of the tire and connecting the support frames with fastening rings. Its effect is similar to adding snow chains, the difference being the installation method. However, this type of anti-skid structure is cumbersome to install and causes significant damage to the tire and road surface. Furthermore, the support frames may detach under extreme conditions. While tracked devices offer strong off-road capability, they suffer from high cost, heavy weight, and increased rolling resistance, making them difficult to popularize on ordinary agricultural tricycles. Therefore, how to effectively improve the off-road capability and anti-skid ability of tricycles in muddy and other complex terrains without significantly altering the vehicle structure or increasing costs remains a pressing technical problem for the industry. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a three-wheeled motorcycle with all-terrain adaptability. This three-wheeled motorcycle achieves excellent grip and passability on muddy and soft ground by installing detachable anti-slip components with buffering function on the drive wheels. At the same time, it can effectively buffer impacts during driving, taking into account both passability and riding comfort, while extending the service life of the components, and can be quickly disassembled and assembled according to road conditions.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a three-wheeled motorcycle with all-terrain adaptability, including a rear wheel, the rear wheel including a tire and a hub, and a plurality of anti-slip components detachably disposed on the rear wheel around the center of the axle; The anti-slip assembly includes an anti-slip component adapted to the outer wall of the tire and a support component connected to the wheel hub; One side of the anti-slip component is slidably connected to the support component. The anti-slip component has a damping cavity filled with compressed gas. One end of the support component is slidably disposed in the damping cavity to form a telescopic part, which achieves damping telescopic by squeezing and buffering with the compressed gas in the cavity.

[0007] In the above scheme, preferably, the anti-slip component includes an anti-slip part and a support part. The anti-slip part includes a clamping groove that fits against the outer wall of the tire, and the outer surface of the anti-slip part is provided with a plurality of anti-slip patterns.

[0008] In the above scheme, preferably, the anti-slip part extends towards the center of the tire from the inner side of the tire to form a support part, and the support part is provided with a damping cavity that cooperates with the telescopic part.

[0009] In the above scheme, preferably, the support part is provided with a slot that slides and engages with the telescopic part, the support part is provided with a plurality of guide slots, and the telescopic part is provided with a guide pin hole that slides and engages with the guide slots.

[0010] In the above scheme, preferably, the support member is provided with an air inlet that communicates with the damping cavity.

[0011] In the above scheme, preferably, the support member is provided with a locking member that cooperates with the wheel hub. The locking member includes symmetrically arranged locking pins, and the wheel hub is provided with pin holes that are adapted to the locking pins.

[0012] In the above scheme, preferably, one end of the symmetrically arranged locking pin passes through the support member and is fitted with a pin hole, and the other end is connected by a connecting plate. A locking spring is provided between the locking pin and the support member.

[0013] In the above scheme, preferably, the end of the locking pin is provided with a plurality of telescopic pins around the circumference, and the locking pin is provided with a pressure channel, which is connected to the air inlet. The bottom of the pin hole is provided with an annular groove that cooperates with the sliding telescopic pin.

[0014] In the above solution, preferably, it includes a frame, on which a rear wheel axle is provided that is connected to the rear wheel, the rear wheel axle is connected to the frame through a leaf spring, and the leaf spring is provided with a positioning bracket connected to the rear wheel axle; The positioning frame is equipped with an inflation assembly, which includes an inflation frame, an inflation tube that is flexibly slidably disposed on the inflation frame, and a lifting push rod for driving the inflation tube to rise and fall. The inflation frame is provided with a lifting groove that cooperates with the inflation tube. The inflation tube is connected to a vehicle-mounted multi-functional air pump.

[0015] In the above scheme, preferably, the upper end of the inflator frame is provided with a connecting pipe that cooperates with the inflator tube, the frame is provided with a telescopic bladder, the connecting pipe is connected to the telescopic bladder, and the telescopic bladder is provided with a cleaning brush for cleaning the outer wall of the tire.

[0016] The beneficial effects of the present invention are: by adding a detachable anti-slip component with air pressure buffer function to the drive wheel, the present invention significantly improves the vehicle's grip and ability to get out of trouble in complex terrains such as mud and soft ground, and effectively solves the problem of traditional tricycles being prone to slipping and getting stuck. Meanwhile, the "damping chamber filled with compressed gas" buffer design elastically connects the anti-slip components and the support components, providing strong grip while efficiently absorbing and mitigating impacts and vibrations during driving. This significantly improves ride comfort and reduces impact damage to the vehicle structure. The inflation pressure can be selected according to road conditions to choose the appropriate buffering performance. In addition, the air pressure linkage locking mechanism allows the anti-slip components to be quickly installed and removed according to road conditions, and the buffering performance can be easily adjusted through the inflation nozzle, taking into account both driving economy on paved roads and passability on unpaved roads. This invention integrates a vehicle-mounted air inflation device and an automatic tire cleaning device, making maintenance operations simpler and more intelligent, demonstrating high practicality and user experience; the overall structure is reliable, highly adaptable, and combines excellent passability, smoothness, convenience, and economy, improving the overall adaptability of three-wheeled motorcycles. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the three-wheeled motorcycle of the present invention.

[0018] Figure 2 For the present invention Figure 1 Schematic diagram of the cross-sectional structure at the tire hub.

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the inner side of the tire and wheel hub of the present invention.

[0020] Figure 4 This is a three-dimensional structural diagram of the anti-slip component of the present invention.

[0021] Figure 5 This is a cross-sectional view of the anti-slip component of the present invention.

[0022] Figure 6 This is a cross-sectional view of the structure of the locking pin and the locking hole in the wheel hub of the present invention.

[0023] Figure 7 For the present invention Figure 1 A magnified schematic diagram of the structure at point A in the middle. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: See also Figures 1-7 .

[0025] A three-wheeled motorcycle with all-terrain adaptability mainly includes a frame 4, a front wheel, and a rear drive wheel 1. The rear wheels 1 are symmetrically arranged on both sides of the rear end of the frame 4, and include conventional tires 101 and wheel hubs 102. The two symmetrical rear wheels 1 are connected by a rear wheel axle 401, which is connected to the frame 4 by a leaf spring 402. The leaf spring 402 is provided with a positioning bracket 403 that cooperates with the rear wheel axle 401. Figure 3 As shown, the front and rear ends of the leaf spring 402 are connected to the frame 4 via pins, and the middle part is connected to the rear wheel axle 401 via a positioning bracket 403. The rear wheel axle 401 rotates through the positioning bracket 403. This is the conventional structure of a three-wheeled vehicle leaf spring chassis, which will not be described in detail here.

[0026] In this embodiment, multiple anti-slip components 2 are detachably provided on the wheel hub 102, and several sets are evenly arranged around the outer periphery of the tire 101, forming a combined functional component that enhances the grip and anti-slip force of the tire 101. Figures 2 to 4 As shown, each anti-slip component 2 consists of an anti-slip part 201 and a support part 202. The inner side of the anti-slip part 21 of the anti-slip part 201 has a clamping groove 23 that fits tightly against the outer contour of the tire 101, ensuring a stable fit after its inner wall is tightly against the outer wall of the tire 101. Its outer surface is covered with deep and rough anti-slip grooves 24 for gripping mud. The side of the anti-slip part 21 closest to the center of the frame 4 extends towards the wheel center to form a support part 22, and the side furthest from the center of the frame 4 bends towards the arc of the tire 101 wall to form a fitting part that fits against the tire wall, such as... Figure 4 As shown.

[0027] The support member 202 is connected to the anti-slip member 201 in a damping sliding connection via a telescopic part 204 at its end. Specifically, a damping cavity 203 is machined inside the end of the support member 22 facing the telescopic part 204. The telescopic part 204 is slidably inserted into the cavity. The damping cavity 203 is filled with compressed gas at a certain pressure, which can be pumped into the damping cavity 203 by the pump body of an air pump. In its natural state, the anti-slip member 201 fits against the tire 101 through its shape and can maintain its position after being filled with a certain pressure of gas in the damping cavity 203. Figure 3 As shown in the diagram; when the vehicle is traveling on a bumpy road and the anti-slip component 201 collides with an obstacle, the telescopic part 204 slides within the damping cavity 203 and compresses the gas, converting the impact energy into the internal energy of the gas, achieving efficient buffering. The support part 22 is provided with a slot 25, and the front and rear walls of the telescopic part 204 are inserted into the slot 25. The support part 22 has several guide grooves 26 extending through the front and rear walls of the slot 25, such as... Figure 4As shown, the telescopic part 204 is provided with guide pin holes 27 at the corresponding positions of the guide groove 26. By inserting guide pins through the guide groove 26 and guide pin holes 27, the anti-slip part 201 can be guided to slide vertically along the support part 202. At the same time, the side wall of the support part 22 is horizontally locked to the telescopic part 204 through the slot 25, ensuring that the two can only slide relative to each other along the axial direction and cannot rotate or swing, thereby improving the reliability of operation and excellent guiding performance.

[0028] The anti-slip part 21 can be made of rubber support, and the support part 22 can be made of metal or hard rubber support. It is integrally pressed and formed with the anti-slip part 21. The outer edge of the telescopic part 204 can be provided with a sealing sliding element, such as an annular sealing ring, which is sealed and slidably connected to the damping cavity 203 in the support part 22.

[0029] The support member 202 is fixed to the hub 102 by a locking member 3, in conjunction with Figure 3 , Figure 5 and Figure 6 The locking component 3 includes two symmetrical locking pins 301, the end of which, away from the hub 102, passes through a hole in the support component 202 and is connected to the outer end by a connecting plate 303. A locking spring 304 is installed between the locking pins 301 and the support component 202. Figure 6 As shown, under normal conditions, the locking pin 301 is pushed to retract towards the side closer to the wheel hub 102. During installation, align the locking pin 301 on the support 202 with the pre-made pin hole 302 on the wheel hub 102, first pull the connecting plate 303 outward, and when the locking pin 301 is aligned with the pin hole 302, release the connecting plate 303. Under the restoring force of the locking spring 304, the locking pin 301 is pushed into the pin hole 302, completing the initial locking.

[0030] To achieve more reliable locking, multiple radially movable telescopic pins 31 are arranged around the end of the locking pin 301. A pressure channel 32 is machined inside the locking pin 301, which communicates with an air inlet 34 located on the support member 202. When high-pressure gas is injected into the system through the air inlet 34, one path of the gas enters the damping chamber 203, while the other path travels through the pressure channel 32 to the bottom of the telescopic pin 31, pushing it outwards and ultimately engaging it in the annular groove 33 at the bottom of the pin hole 302 (e.g., ...). Figure 6 As shown), the pneumatically assisted secondary locking greatly enhances the safety and vibration resistance of the connection. Preferably, four telescopic pins 31 are evenly arranged, and each telescopic pin 31 has an annular sealing ring at one end facing the center of the locking pin 301 that matches the sliding hole of the telescopic pin 31, thereby realizing the damped sliding of the telescopic pin 31. When the air inlet 34 is sucked, the pressurized gas in the damping cavity 203 can be extracted. At the same time, the pressure channel 32 sucks each telescopic pin 31, causing it to slide and reset and hide in the outer circumference of the locking pin 301, releasing the engagement with the annular groove 33 and releasing the locking function of the locking pin 301.

[0031] like Figure 2 and Figure 3 As shown, to facilitate gas replenishment in the field, this invention integrates an inflation assembly 5 on the vehicle frame 4. The inflation frame 501 of the inflation assembly 5 is vertically fixed on the positioning frame 403. One end of the inflation tube 502, near the inner side of the wheel hub 102, is installed in the lifting groove 504 of the inflation frame 501 through an elastic element such as a buffer spring. One end of the inflation tube 502 passes through the lifting groove 504 and slides in the push rod end of the lifting push rod 503, which can be driven to rise and fall by the lifting push rod 503. The lifting push rod 503 can be an electric push rod. The inflation tube 502 is connected to a 12V or 24V multi-functional air pump on the vehicle through a hose. The multi-functional air pump integrates air suction and air extraction functions, which is a conventional design of multi-functional air pumps and will not be described in detail here. The inflation tube 502 is located inside the wheel hub 102, as shown in the diagram. Figure 2 As shown, a buffer spring is provided between the end of the inflation tube 502 facing the hub 102 and the inflation frame 501. The end of the inflation tube 502 facing the hub 102 is provided with a transition arc-shaped concave hole that cooperates with the inflation nozzle 34. When the lifting push rod 503 inside the inflation tube 502 is driven to the same circumferential position as the inflation nozzle 34, the rotation of the hub 102 allows the inflation nozzles 34 on each anti-slip component 2 on the hub 102 to cooperate with the inflation tube 502 in sequence. At the same time, the buffer spring improves the sealing performance when the inflation tube 502 and the inflation nozzle 34 are in contact. The inflation nozzle 34 is an existing tire inflation nozzle, and the corresponding inflation tube 502 is an existing inflation connector used to cooperate with the tire inflation nozzle. When the two are connected, the inflation nozzle 34 is sucked in by a multi-functional inflation pump.

[0032] When inflation is required, the lifting push rod 503 pushes the inflation tube 502 down, so that its output port is precisely connected to the inflation nozzle 34 on the support 202, and inflation or pressure testing can be performed. After all anti-slip components 2 are installed, the inflation tube 502 is used to inflate the inflation nozzles 34 on each anti-slip component 2. At the same time, the inflation pressure of the vehicle-mounted multi-functional air pump is set to ensure that the gas in the damping chamber 203 has a certain pressure. After all anti-slip components 2 are inflated, the lifting push rod 503 pushes the inflation tube 502 to the top of the lifting groove 504. At this time, the rear wheel 1 does not contact the inflation tube 502 when rotating normally.

[0033] The inflatable frame 501 is equipped with a connecting pipe 505 at the upper end of the lifting groove 504. The inflatable pipe 502 can be connected to the upper connecting pipe 505 after being lifted upward by the lifting push rod 503. At this time, the connecting pipe 505 is connected to the telescopic bladder 404 installed on the frame 4 through another flexible hose. Figure 1 and Figure 7As shown, the telescopic bladder 404 is located above the rear wheel 1, with two guide rods arranged parallel to it. Two sets of telescopic bladders 404 are sleeved on one end of the guide rods, and a cleaning brush 405 is installed at the other end of the telescopic bladder 404. When the inflation pipe 502 is connected to the connecting pipe 505, the telescopic bladder 404 is reciprocated by inflating and deflating by starting the vehicle-mounted multi-functional air pump. This allows high-pressure gas to enter the telescopic bladder 404, causing it to expand and drive the cleaning brush 405 to press against the surface of the tire 101, scraping off the attached mud. When deflation occurs, the telescopic bladder 404 contracts, and the cleaning brush 405 automatically returns to its original position, cleaning while returning to its original position and avoiding unnecessary wear after resetting.

[0034] Using a three-wheeled motorcycle with all-terrain adaptability as described above: When driving on regular roads, the anti-skid component 2 can be removed to maintain vehicle economy; When navigating muddy or complex terrain, each anti-skid component 2 is installed onto the wheel hub 102 via the locking element 3 on its support 202. Specifically, pulling the connecting plate 303 aligns the locking pin 301 with the pin hole 302 on the wheel hub, then releasing it. The locking spring 304 then springs the locking pin 301 into the pin hole, completing the initial mechanical locking. Subsequently, the inflation component 5 is operated, and the lifting push rod 503 drives the inflation pipe 502 to descend and connect with the inflation nozzle 34 on the support 202. High-pressure gas is then injected into the system through the inflation pipe 502 via the vehicle-mounted multi-functional air pump. The gas enters the damping chamber 203 of the anti-skid component 201, causing... The telescopic part 204 is supported and provides buffer potential energy for the anti-slip part 201. On the other hand, the pressure channel 32 pushes the telescopic pin 31 at the end of the locking pin 301 to extend radially and engage with the annular groove 33 at the bottom of the pin hole 302, realizing pneumatically assisted secondary safety locking. During driving, the anti-slip texture 24 on the outer surface of the anti-slip part 201 penetrates into the ground to provide the main traction force. When encountering an impact, the anti-slip part 201 can slide relative to the support 202, compressing the gas in the damping chamber 203 to absorb the shock and achieve adaptive buffering. During maintenance, the air pressure can be adjusted or the components can be disassembled by evacuating air through the same air nozzle 34 using an air pump. Meanwhile, the inflation tube 502 can be raised and connected to the connecting tube 505, which can drive the telescopic bladder 404 to reciprocate, thereby causing the cleaning brush 405 to periodically press against and detach from the surface of the tire 101, thus realizing the automatic mud scraping and cleaning function.

[0035] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A three-wheeled motorcycle with all-terrain adaptability, including a rear wheel (1), characterized in that: The rear wheel (1) includes a tire (101) and a hub (102), and a plurality of anti-slip components (2) are detachably provided on the rear wheel (1) and arranged around the center of the wheel axle. The anti-slip assembly (2) includes an anti-slip component (201) adapted to the outer wall of the tire (101) and a support component (202) connected to the wheel hub (102). The anti-slip component (201) is slidably connected to the support component (202) on one side. The anti-slip component (201) is provided with a damping cavity (203) filled with compressed gas. One end of the support component (202) is slidably disposed in the damping cavity (203) to form a telescopic part (204), which achieves damping telescopic by squeezing and buffering with the compressed gas in the cavity.

2. A three-wheeled motorcycle with all-terrain adaptability according to claim 1, characterized in that: The anti-slip component (201) includes an anti-slip part (21) and a support part (22). The anti-slip part (21) includes a clamping groove (23) that fits against the outer wall of the tire (101). The surface of the anti-slip part (21) is provided with a plurality of anti-slip patterns (24).

3. A three-wheeled motorcycle with all-terrain adaptability according to claim 2, characterized in that: The anti-slip part (21) extends towards the center of the tire (101) from one end toward the inside of the tire (101) to form a support part (22), and the support part (22) is provided with a damping cavity (203) that cooperates with the telescopic part (204).

4. A three-wheeled motorcycle with all-terrain adaptability according to claim 2, characterized in that: The support part (22) is provided with a slot (25) that slides and engages with the telescopic part (204), the support part (22) is provided with a plurality of guide slots (26), and the telescopic part (204) is provided with a guide pin hole (27) that slides and engages with the guide slots (26).

5. A three-wheeled motorcycle with all-terrain adaptability according to claim 1, wherein the characteristic is: The support member (202) is provided with an air inlet (34) that communicates with the damping cavity (203).

6. A three-wheeled motorcycle with all-terrain adaptability according to claim 5, characterized in that: The support member (202) is provided with a locking member (3) that cooperates with the hub (102). The locking member (3) includes symmetrically arranged locking pins (301), and the hub (102) is provided with a pin hole (302) that is adapted to the locking pin (301).

7. A three-wheeled motorcycle with all-terrain adaptability according to claim 6, characterized in that: The symmetrically arranged locking pins (301) pass through the support member (202) at one end and are fitted with the pin hole (302), and the other end is connected through the connecting plate (303). A locking spring (304) is provided between the locking pin (301) and the support member (202).

8. A three-wheeled motorcycle with all-terrain adaptability according to claim 7, characterized in that: The locking pin (301) has several telescopic pins (31) arranged around its circumference at its end, and a pressure channel (32) is provided inside the locking pin (301), which is connected to the air inlet (34). The bottom of the pin hole (302) is provided with an annular groove (33) that cooperates with the sliding telescopic pin (31).

9. A three-wheeled motorcycle with all-terrain adaptability according to claim 1, characterized in that: Includes a frame (4), on which a rear wheel axle (401) is provided connected to the rear wheel (1), the rear wheel axle (401) is connected to the frame (4) via a leaf spring (402), and the leaf spring (402) is provided with a positioning bracket (403) connected to the rear wheel axle (401). The positioning frame (403) is provided with an inflation assembly (5), which includes an inflation frame (501), an inflation tube (502) that is elastically slidably disposed on the inflation frame (501), and a lifting push rod (503) for driving the inflation tube (502) to lift. The inflation frame (501) is provided with a lifting groove (504) that cooperates with the inflation tube (502). The inflation tube (502) is connected to a vehicle-mounted multi-functional air pump.

10. A three-wheeled motorcycle with all-terrain adaptability according to claim 9, characterized in that: The upper end of the inflatable frame (501) is provided with a connecting pipe (505) that cooperates with the inflatable pipe (502). The frame (4) is provided with a telescopic bladder (404). The connecting pipe (505) is connected to the telescopic bladder (404). The telescopic bladder (404) is provided with a cleaning brush (405) for cleaning the outer wall of the tire (101).

Citation Information

Patent Citations

  • Skid -proof means for vehicle tyre

    CN206086231U