Heavy-load combined tire

Abstract

A heavy-load combined tire comprises a hollow rubber base tire assembled with a rim, a replaceable rubber wear ring combined on the outer circumference of the base tire, high-elasticity solid particles filled in an inner cavity of the base tire, and inflation opening leather which is arranged between an opening of the inner cavity of the base tire and the rim and is provided with an inflation cavity, the outer circumferential surface of the base tire and the inner circumferential surface of the wear ring are provided with mutually embedded convex and concave parts, and two sides of the circumference of the wear ring are provided with flanges which are attached to the side surface of the base tire and radially stabilize the wear ring on the base tire. The tire has the positive effects that the replaceable wear ring is assembled on the base tire, the base tire can be used for a long time, the required tire pressure is obtained through the high-elasticity rubber ball and the inflation inlet leather, the bearing capacity is greatly improved, the size is reduced compared with an existing heavy-duty tire, the inflation part is far away from the ground, and the inflation effect is good. And potential safety hazards caused by pressure reduction or tire burst of the tire due to puncture are eliminated. The high-difficulty technology and the large amount of material consumption for manufacturing heavy-duty tires are avoided, and the manufacturing cost and the use cost are greatly reduced.

Description

Technical Field

[0001] This invention belongs to the field of vehicles, specifically relating to automobile tires. Background Technology

[0002] Existing large heavy-duty trucks, especially those used in mining operations, utilize tires with increased diameter, width, and thickness, made from high-quality materials to achieve heavy-duty performance. This results in tires that are bulky, heavy, and expensive (e.g., a tire for a mining truck with a diameter of 4000mm, an axial width of 1000mm, and a weight of 5000kg costs over 400,000 RMB). This is unaffordable for most companies. Furthermore, the rough surfaces and sharp rocks in mines cause tires to wear out quickly. When the circumference of the tire reaches its wear limit, the remaining parts are far from their aging period, leading to the entire tire being discarded simply because it has worn down. This results in significant waste of rubber materials and increases vehicle manufacturing and operating costs. The frequent replacement and disposal of large tires also increases the environmental burden. In addition, existing tires rely entirely on inflation for support and cushioning, making it difficult to eliminate the safety hazards of punctures, leaks, and blowouts. Summary of the Invention

[0003] The purpose of this invention is to provide a heavy-duty combined tire to overcome the aforementioned disadvantages of existing heavy-duty vehicles, especially monolithic large tires used in mining operations.

[0004] The heavy-duty combined tire of the present invention includes: a hollow rubber base tire assembled with a rim; a replaceable (installable and detachable) rubber wear ring assembled on the outer circumference of the base tire; highly elastic solid particles filled in the inner cavity of the base tire; and an inflation valve with an inflation chamber installed between the inner cavity opening of the base tire and the rim. The outer circumferential surface of the base tire and the inner circumferential surface of the wear ring have interlocking protrusions and concaves. The protrusions and concaves on the outer circumferential surface of the wear ring form a contact surface with the ground. The two sides of the circumference of the wear ring have flanges that fit against the sides of the base tire to secure the wear ring to the base tire.

[0005] In this invention, the highly elastic solid particles filled in the inner cavity of the base tire are preferably highly elastic (large deformation rate) rubber balls.

[0006] In this invention, the interlocking convex and concave surfaces of the base tire's outer circumferential surface and the wear ring preferably have protruding teeth pointing towards the center on the inner circumferential surface of the wear ring. These protruding teeth are continuously arranged on the inner circumference of the wear ring to form a toothed ring. The outer circumferential surface of the base tire has toothed grooves that engage with all the protruding teeth on the wear ring. Preferably, three rings of protruding teeth are spaced apart on both sides and in the middle of the inner circumference of the wear ring.

[0007] To ensure the pressure applied by the bead to the filler inside the base tire and the strength of the inflatable bead, tire cords or steel wires are inserted into the side of the bead facing the elastic filler.

[0008] To prevent the high-elasticity solid particles filling the tire from scattering due to impact in the rare event of a tire blowout, a fiber mesh or wire mesh is placed at the interface between the base tire and the high-elasticity solid particles.

[0009] The assembly steps of the tire onto the rim according to the present invention are as follows: First, a wear ring is assembled on the base tire. Then, a wire mesh is inserted into the cavity of the base tire and filled with high-elastic rubber balls. Before use, the surface of the rubber balls is coated with an anti-scattering non-curing adhesive to prevent the rubber balls from flowing and loosening during the filling process. The adhesive is preferably the same as or similar to that used in self-adhesive tape. After the rubber balls are filled, the pre-inflated end cap is assembled onto the rim. Finally, the base tire filled with high-elastic rubber balls is assembled with the rim. After assembly, the inflation cavity of the end cap is inflated. The end cap expands, squeezing the rubber balls and generating an expansion force in the inner cavity of the base tire. After the tire working pressure is met, inflation is stopped. The end cap valve is checked to confirm that there is no air leakage. The tire and rim assembly are then complete.

[0010] The positive effects of this invention are:

[0011] A replaceable wear ring is fitted around the circumference of the base tire, allowing for the combination and separation of the worn area from the rest. Replacing the wear ring extends the base tire's lifespan and reduces tire material consumption. The required tire pressure is achieved through the combination of a high-elasticity rubber ball and an inflation valve, significantly increasing load-bearing capacity compared to ordinary tires and allowing for a substantial reduction in size compared to existing heavy-duty tires. Furthermore, the inflation point is located inside the valve, close to the rim and away from the ground, minimizing the risk of punctures and tire blowouts, thus eliminating the driving hazards associated with tire punctures and blowouts. This ensures safe tire use. This invention, while increasing the number of tires, allows the use of smaller diameter, conventionally thicker tires to meet the load-bearing requirements of large heavy-duty trucks. Compared to existing heavy-duty tires with larger diameters, greater thicknesses, and wider treads, it avoids complex manufacturing techniques and excessive material consumption, significantly reducing manufacturing and operating costs. The tire of this invention is designed and manufactured with a diameter of 2000mm and an axial width of 800mm. Based on current production costs, the selling price will not exceed RMB 50,000. Attached Figure Description

[0012] Figure 1 This is a radial partial sectional view of the overall structure of the tire mounted on the rim according to the present invention.

[0013] Figure 2 This is a partial sectional view of the base tire in this invention.

[0014] Figure 3 This is a side view of the base tire in this invention.

[0015] Figure 4 This is a partial sectional view of the wear ring in the main view of the present invention.

[0016] Figure 5This is a partial sectional view of the wear ring from the side in this invention. Detailed Implementation

[0017] See Figure 1 The heavy-duty tire of the present invention includes: a hollow rubber base tire 2 mounted on a rim 1; a rubber wear ring 3 that can be mounted, removed (replaced) and combined on the outer circumference of the base tire 2; a highly elastic rubber ball 4 filled in the inner cavity of the base tire; a wire mesh 5 inserted into the interface between the base tire 2 and the highly elastic rubber ball 4; and an air inlet skin 6 with an air cavity installed between the base tire 2 and the rim 1.

[0018] See Figure 1-3 The base tire 2 includes a cylindrical circumferential portion 2-1, two radial side portions 2-2 connected to both ends of the cylindrical circumferential portion, and a mounting hole 2-3 at the center of the side portion and the rim.

[0019] See Figure 1 , Figure 4 , Figure 5 The wear ring 3 has protruding teeth 3-1 pointing towards the center on its inner circumferential surface. The protruding teeth 3-1 are continuously arranged on the inner circumference of the wear ring to form a toothed ring. The toothed ring on the inner circumferential surface of the wear ring 3 is arranged in three rings at intervals on both sides and in the middle of the circumference of the wear ring 3. The base tire 2 has tooth grooves 2-4 on its outer circumferential surface that engage with all the protruding teeth on the wear ring 3.

[0020] See Figure 3 , Figure 4 The outer circumference of the wear ring has treads (tread marks) to increase friction with the ground. The two sides of the outer circumference of the wear ring 3 have flanges 3-2 that fit against the side of the base tire 2 to secure the wear ring 3 to the base tire 2. Reinforcing steel wires are embedded in the wear ring 3.

[0021] The mouthpiece 6 has an inflatable inner cavity 6-1 and an inflatable nozzle. The mouthpiece 6 is thickened on the side facing the elastic rubber ball 4 and a tire line or steel wire is inserted therein.

[0022] The rubber ball is made of a material with a diameter between 50mm and 150mm.

Claims

1. A heavy-duty combined tire, characterized in that: The device includes a hollow rubber base tire that is assembled with a rim, a replaceable rubber wear ring that is assembled on the outer circumference of the base tire, highly elastic solid particles that fill the inner cavity of the base tire, and an inflation valve with an inflation chamber installed between the inner opening of the base tire and the rim. The outer circumferential surface of the base tire and the inner circumferential surface of the wear ring have interlocking protrusions and concaves. The protrusions and concaves on the outer circumferential surface of the wear ring form a contact surface with the ground. The two sides of the wear ring have flanges that fit against the sides of the base tire to secure the wear ring to the base tire.

2. The heavy-duty combined tire according to claim 1, characterized in that: The highly elastic solid particles filling the inner cavity of the base tire are highly elastic rubber balls.

3. The heavy-duty combined tire according to claim 1, characterized in that: The interlocking convex and concave surfaces between the outer circumferential surface of the base tire and the inner circumferential surface of the wear ring consist of protruding teeth pointing towards the center on the inner circumferential surface of the wear ring. These protruding teeth are continuously arranged on the inner circumference of the wear ring to form a toothed ring, and there are toothed grooves on the circumferential surface of the base tire that engage with all the protruding teeth of the wear ring.

4. A heavy-duty combined tire according to claim 3, characterized in that: The toothed rings on the inner circumference of the wear ring are arranged in three rings at intervals on both sides and in the middle of the wear ring circumference.

5. A heavy-duty combined tire according to claim 1, characterized in that: The tire line or steel wire is inserted with the opening facing the elastic filler.

6. A heavy-duty combined tire according to claim 1, characterized in that: Nylon or wire mesh is placed at the interface between the base material and the highly elastic solid particles.

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