A rubber foamed tire
By designing surface covers and side guards on rubber foam tires, the tire's grip, shock absorption performance, and structural durability are improved, solving the problems of low elasticity and low strength of existing rubber foam tires, making them suitable for the high load requirements of industrial vehicles.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO ZHENHUA TIRE CO LTD
- Filing Date
- 2025-09-03
- Publication Date
- 2026-07-14
AI Technical Summary
Existing rubber foam tires have problems such as low elasticity and low strength, making them easily damaged by external forces.
The design incorporates a surface cover and side guards. The surface cover includes a supporting outer layer, anti-slip protrusions, cushioning cutouts, wear-resistant padding, and reinforced edge sealing. The side guards include a connecting base, connecting seals, and tire bead. The combination of these components enhances the tire's grip, shock absorption, and structural durability.
It significantly improves tire grip and shock absorption, extends tread life, reduces rolling resistance, and enhances structural durability and aesthetics, making it suitable for the harsh operating conditions of industrial vehicles.
Smart Images

Figure CN224490538U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rubber foam tire technology, and in particular to a rubber foam tire. Background Technology
[0002] Traditional solid rubber tires, while simple in structure and maintenance-free, suffer from inherent drawbacks such as heavy weight, poor shock absorption, and high rolling resistance. Ordinary pneumatic tires, on the other hand, are prone to punctures in industrial applications, resulting in high maintenance costs. To balance performance requirements, foamed rubber tires were developed. This technology introduces a controlled foaming process into the rubber matrix, forming a uniform closed-cell structure, giving the tire both lightweight and cushioning performance. Simultaneously, its airless nature eliminates the risk of tire blowouts, making it particularly suitable for the harsh operating conditions of industrial vehicles such as forklifts and AGVs. With advancements in material modification technology and composite structure design, modern foamed rubber tires have achieved breakthroughs in load-bearing capacity and service life, becoming an important development direction for industrial tires. However, existing foamed rubber tires still suffer from low elasticity, low strength, and susceptibility to damage from external forces.
[0003] Therefore, it is essential to invent a rubber foam tire. Utility Model Content
[0004] To address the aforementioned technical problems, this utility model provides a rubber foam tire, which solves the issues of low elasticity, low strength, and susceptibility to damage from external forces that still exist in existing rubber foam tires. A rubber foam tire includes a foam tire base, supporting steel sheets, a surface cover, and side guards, wherein: the supporting steel sheets are arranged and installed on the surface of the foam tire base, and the surface cover is fixedly installed on the outer side of the supporting steel sheets; the side guards are fixedly installed on the outer walls of both sides of the foam tire base.
[0005] The outer cover includes a supporting outer layer, anti-slip protrusions, cushioning perforations, wear-resistant padding, and reinforcing edge sealing. The anti-slip protrusions are fixedly installed on the outer surface of the supporting outer layer, and the cushioning perforations are opened inside the anti-slip protrusions. The wear-resistant padding is fixedly installed on the surface of the anti-slip protrusions. The reinforcing edge sealing is fixedly installed between the supporting outer layer and the anti-slip protrusions.
[0006] The side guard includes a connecting base plate, a connecting seal ring, and a tire bead. The connecting base plate is fixedly installed on the outer walls of both sides of the foamed tire base. The connecting seal ring is fixedly installed on the outer side of the connecting base plate and at the joint between the foamed tire base and the supporting steel sheet. The tire bead is fixedly installed on the inner side of the connecting base plate.
[0007] The supporting outer layer inside the outer cover uses a ring-shaped rubber ring, and the supporting outer layer can completely wrap the outer surface of the curved surface of the foamed tire matrix. The anti-slip protrusions are made of several rubber blocks. The anti-slip protrusions are arranged in a ring on the surface of the supporting outer layer, and the buffer hollow is set inside each anti-slip protrusion, which is a long strip-shaped through hole. The wear-resistant wrapping pad is made of hard rubber pad. The reinforced edge sealing seals the seam between the supporting outer layer and the anti-slip protrusions.
[0008] The side guards consist of two sets of annular rubber sheets, and the side guards completely cover the outer surface of the foamed tire base; the tire bead can be connected to the wheel hub.
[0009] Compared with the prior art, the present invention has the following beneficial effects:
[0010] 1. The surface cover of this utility model provides overall protection for the tire's outer surface through a supporting outer layer. Its anti-slip protrusions, combined with internal buffer hollows, significantly improve grip and shock absorption performance. The wear-resistant pad extends the tread life by more than 3 times, while the reinforced edge seal ensures structural durability through a 2.5MPa bonding strength. At the same time, this design reduces rolling resistance by 18% and controls tire noise below 68dB, forming a high-performance tread system that integrates anti-slip, wear resistance, and quietness.
[0011] 2. The side guards of this utility model are fixed to both sides of the foamed tire base by connecting base plates, providing edge protection to prevent scratches; the connecting seal ring seals the joint between the foamed tire base and the supporting steel sheet, preventing dust and water; the tire bead ensures a tight connection with the wheel hub and distributes pressure; at the same time, the double-sided ring design maintains structural stability, prevents deformation, and also has an aesthetic and anti-fouling function. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of this utility model.
[0013] Figure 2 This is a schematic diagram of the disassembled version of this utility model.
[0014] Figure 3 This is a schematic diagram of the surface cover of this utility model.
[0015] Figure 4 This is a structural schematic diagram of the side cover of this utility model.
[0016] In the picture:
[0017] 1. Foamed tire base, 2. Supporting steel sheet, 3. Surface cover, 31. Supporting outer layer, 32. Anti-slip protrusion, 33. Buffer hollow, 34. Wear-resistant wrapping pad, 35. Reinforced edge seal, 4. Side guard, 41. Connecting base plate, 42. Connecting seal ring, 43. Tire bead. Detailed Implementation
[0018] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.
[0019] As attached Figure 1 To be continued Figure 3 As shown.
[0020] The present invention provides a rubber foam tire, comprising a foam tire base 1, supporting steel sheets 2, a surface cover 3 and a side cover 4, wherein: the supporting steel sheets 2 are arranged and installed on the surface of the foam tire base 1, and the surface cover 3 is fixedly installed on the outside of the supporting steel sheets 2, and the side cover 4 is fixedly installed on the outer walls of both sides of the foam tire base 1.
[0021] The outer cover 3 includes a supporting outer layer 31, anti-slip protrusions 32, buffer cutouts 33, wear-resistant padding 34, and reinforced edge sealing 35. The anti-slip protrusions 32 are fixedly installed on the outer surface of the supporting outer layer 31, and the buffer cutouts 33 are formed inside the anti-slip protrusions 32. The wear-resistant padding 34 is fixedly installed on the surface of the anti-slip protrusions 32. The reinforced edge sealing 35 is fixedly installed between the supporting outer layer 31 and the anti-slip protrusions 32.
[0022] The side guard 4 includes a connecting base plate 41, a connecting seal ring 42, and a tire bead 43. The connecting base plate 41 is fixedly installed on the outer walls of both sides of the foamed tire base 1. The connecting seal ring 42 is fixedly installed on the outer side of the connecting base plate 41 and at the joint between the foamed tire base 1 and the supporting steel sheet 2. The tire bead 43 is fixedly installed on the inner side of the connecting base plate 41.
[0023] The supporting outer layer 31 inside the outer cover 3 is a ring-shaped rubber ring, and the supporting outer layer 31 can completely wrap the outer surface of the curved surface of the foamed tire base 1. The anti-slip protrusions 32 are made of several rubber blocks. The anti-slip protrusions 32 are arranged in a ring on the surface of the supporting outer layer 31, and the buffer hollow 33 is set inside each anti-slip protrusion 32, which is a long strip-shaped through hole. The wear-resistant wrapping pad 34 is a hard rubber pad. The reinforcing edge sealing 35 seals the seam between the supporting outer layer 31 and the anti-slip protrusions 32.
[0024] The side guard 4 uses two sets of annular rubber sheets, and the side guard 4 completely wraps the outer surface of the side of the foamed tire base 1; the tire bead 43 can be connected to the wheel hub.
[0025] This rubber foam tire achieves efficient load-bearing and cushioning through a composite structure of the foam tire matrix 1 and supporting steel sheets 2: the closed-cell foam structure of the foam tire matrix 1 absorbs 80% of the impact energy, while the radially arranged supporting steel sheets 2 limit excessive deformation. The outer surface cover 3 serves as an intelligent ground contact surface, with its anti-slip protrusions 32 improving drainage by 30% through a diamond pattern, internal cushioning perforations 33 reducing the peak impact value by 45%, wear-resistant padding 34 extending its lifespan by 3 times, and reinforced edge sealing 35 ensuring structural integrity.
[0026] The sidewall 4 features a double-layer protection design: the connecting base plate 41 fits the tire sidewall with an interference fit, the tire bead 43 forms a labyrinth-style hub seal, and the connecting seal ring 42 can absorb 5-8° deflection stress. Under vertical load, the pressure is evenly distributed to the supporting steel plate 2; during rolling, the anti-slip protrusions 32 achieve gradual ground contact with a 15°-20° tilt angle; during steering, the sidewall 4 maintains the tire's roundness error <0.3mm. This design reduces weight by 35% and increases load capacity by 20% compared to traditional tires, making it perfectly suited for high-load demand scenarios such as electric handling equipment.
[0027] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.
Claims
1. A rubber foam tire, characterized in that: The system includes a foamed tire base (1), supporting steel sheets (2), a surface cover (3), and side guards (4), wherein: the supporting steel sheets (2) are arranged and installed on the surface of the foamed tire base (1), and the surface cover (3) is fixedly installed on the outside of the supporting steel sheets (2), and the side guards (4) are fixedly installed on the outer walls of both sides of the foamed tire base (1); the surface cover (3) includes a supporting outer layer (31), anti-slip protrusions (32), buffer cutouts (33), wear-resistant padding (34), and reinforced edge sealing (35), and the anti-slip protrusions (32) are fixedly installed on the outer surface of the supporting outer layer (31), and the buffer cutouts (33) are formed on the anti-slip protrusions. The interior of the foamed tire body (1) is as follows: the wear-resistant pad (34) is fixedly installed on the surface of the anti-slip protrusion (32); the reinforced edge seal (35) is fixedly installed between the supporting outer layer (31) and the anti-slip protrusion (32); the side guard (4) includes a connecting base plate (41), a connecting seal ring (42) and a tire bead (43), and the connecting base plate (41) is fixedly installed on the outer walls of both sides of the foamed tire body (1); the connecting seal ring (42) is fixedly installed on the outside of the connecting base plate (41) and fixedly installed at the joint between the foamed tire body (1) and the supporting steel sheet (2); the tire bead (43) is fixedly installed on the inside of the connecting base plate (41).
2. The rubber foam tire as described in claim 1, characterized in that: The supporting outer layer (31) inside the surface cover (3) is a ring-shaped rubber ring, and the supporting outer layer (31) can completely wrap the outer surface of the arc surface of the foamed tire matrix (1). The anti-slip protrusion (32) is made of several rubber blocks. The anti-slip protrusion (32) is arranged in a ring on the surface of the supporting outer layer (31), and the buffer hollow (33) is set inside each anti-slip protrusion (32), which is a long strip-shaped through hole. The wear-resistant wrapping pad (34) is made of hard rubber pad. The reinforced sealing edge (35) seals the seam between the supporting outer layer (31) and the anti-slip protrusion (32).
3. A rubber foam tire as described in claim 1, characterized in that: The side guard (4) uses two sets of annular rubber sheets, and the side guard (4) completely covers the outer surface of the side of the foamed tire base (1); the tire bead (43) can be connected to the wheel hub.