High cushioning mechanical tire

Abstract

The application relates to a high-buffer mechanical tire, and belongs to the technical field of engineering mechanical tires and special vehicle tires, which comprises a composite outer-ring tire body, an inner-ring hub, a nitrogen spring buffer assembly, a hydraulic damping buffer assembly and a anti-falling limiting assembly, the composite outer-ring tire body comprises an outer-ring framework and a plurality of buffer blocks arranged on the outer circumference of the outer-ring framework; the nitrogen spring buffer assembly comprises a plurality of groups of nitrogen springs, the two ends of each group of nitrogen springs are respectively hinged to the outer wall of the inner-ring hub and the inner sidewall of the outer-ring framework; the hydraulic damping buffer assembly comprises a plurality of hydraulic damping buffers, the two ends of each hydraulic damping buffer are respectively hinged to the outer wall of the inner-ring hub and the inner sidewall of the tire body; and the anti-falling limiting assembly comprises a plurality of hinged connecting arms, the two ends of each hinged connecting arm are respectively hinged to the outer wall of the inner-ring hub and the inner sidewall of the tire body. The application has the technical effects of preventing axial movement of the inner and outer rings, good shock absorption effect and excellent damping effect.

Description

Technical Field

[0001] This application relates to the technical field of tires for engineering machinery and tires for special vehicles, and in particular to a high-impact mechanical tire. Background Technology

[0002] Currently, construction machinery tires used in heavy-duty and off-highway conditions are mainly divided into three categories: solid rubber tires, polyurethane solid tires, and split composite tires. They are the core walking components of construction machinery and mining equipment, and have extremely high requirements for load-bearing capacity, cushioning performance, and structural reliability.

[0003] Existing cushioned composite tires are generally composite tires that use elastic cushioning components. The cushioning components are not arranged reasonably, resulting in uneven stress and local overload damage. They lack redundant cushioning design, and the entire structure fails when a single cushioning component fails. They also lack a dedicated anti-detachment limiting mechanism, and the connection between the inner and outer rings is not reliable enough, which cannot meet the long-term use requirements of extreme working conditions such as mining and heavy engineering. Summary of the Invention

[0004] In order to overcome the technical difficulties of split tires being prone to axial detachment and the inability of a single buffer structure to simultaneously achieve buffering, shock absorption, and load bearing, and to realize adjustable tire buffering performance to adapt to different heavy-duty working conditions and improve vehicle running stability, this application provides a high-buffering mechanical tire.

[0005] This application provides a high-impact tire, which adopts the following technical solution: A high-buffer mechanical tire includes a composite outer ring carcass, an inner ring hub, a nitrogen spring buffer assembly, a hydraulic damping buffer assembly, and an anti-detachment limiting assembly. The composite outer ring carcass includes an outer ring skeleton and multiple buffer blocks disposed on the outer circumference of the outer ring skeleton. The inner ring hub is coaxially disposed inside the outer ring skeleton and forms a gap with the inner sidewall of the outer ring skeleton. The nitrogen spring buffer assembly includes multiple sets of nitrogen springs, with each set of nitrogen springs having its two ends hinged to the outer wall of the inner rim hub and the inner side wall of the outer rim skeleton, respectively. The hydraulic damping buffer assembly includes multiple hydraulic damping buffers, each of which is hinged at both ends to the outer wall of the inner rim hub and the inner wall of the tire body, respectively. The anti-detachment limiting assembly includes multiple articulated connecting arms, each of which is hinged at both ends to the outer wall of the inner rim hub and the inner wall of the tire body, respectively, to limit the axial relative displacement between the inner rim hub and the outer rim frame.

[0006] Optionally, the articulated connecting arm includes a first connecting arm and a second connecting arm, one end of the first connecting arm is hinged to the inner wheel hub, the other end of the first connecting arm is hinged to one end of the second connecting arm, and the other end of the second connecting arm is connected to the inner sidewall of the tire.

[0007] Optionally, the nitrogen spring buffer assembly, the hydraulic damping buffer assembly, and the anti-slip limiting assembly are all located on both sides of the tire along the centerline direction, and the assemblies on each side are evenly distributed along the circumference of the inner wheel hub.

[0008] Optionally, each set of nitrogen springs includes two nitrogen springs arranged in a figure-eight pattern; the hydraulic damping buffer is disposed between two adjacent sets of nitrogen springs.

[0009] Optionally, the buffer block is made of polyurethane elastomer and is fixed to the outer circumferential wall of the outer ring skeleton by locking bolts.

[0010] Optionally, an annular groove is provided on the outer circumferential wall of the outer ring skeleton, and a positioning block is provided on the buffer block. The positioning block is embedded in the annular groove, and the locking bolt passes through the countersunk hole on the outer ring skeleton and connects with the threaded hole on the positioning block.

[0011] Optionally, the nitrogen spring is a heavy-duty nitrogen spring with a rated load of 10-18kN and a stroke of 60-120mm; the hydraulic damping buffer is a bidirectional hydraulic damper with a damping coefficient of 250-550N•s / m.

[0012] Optionally, the buffer block is made of polyester polyurethane elastomer with a Shore hardness of 85-95A, the outer ring frame is made of wear-resistant alloy steel or carbon fiber frame; the inner ring hub is made of 42CrMo high-strength alloy structural steel through integral forging and tempering, and the hardness after tempering is HRC35-42.

[0013] Optionally, the inner side of the inner wheel hub is provided with circular or elliptical weight-reduction holes for weight reduction.

[0014] Optional, applicable to mining heavy-duty loaders or heavy engineering transport vehicles, wherein: when used in mining heavy-duty loaders, the number of nitrogen springs is 12 with a rated load of 15kN and a stroke of 100mm, the number of hydraulic damping buffers is 6 with a damping coefficient of 450N•s / m, and the number of anti-detachment limit components is 8. When used in heavy engineering transport vehicles, the number of nitrogen springs is 12 with a rated load of 12kN and a stroke of 80mm, the number of hydraulic damping buffers (41) is 6 with a damping coefficient of 350N•s / m, and the number of anti-detachment limit components is 6.

[0015] Compared with the prior art, this application includes the following technical effects: High anti-detachment safety: Utilizing a Z-shaped connecting arm structure, it fundamentally eliminates the risk of axial movement and detachment of the inner and outer rings, making it suitable for extreme working conditions such as mining and heavy-duty applications, eliminating safety hazards. Excellent shock absorption: Nitrogen springs and hydraulic dampers work together, providing a long buffer stroke and good shock absorption, with vibration attenuation efficiency more than 60% higher than traditional tires, protecting the vehicle chassis and frame. Long structural strength and service life: The outer ring buffer block is wear-resistant and crack-resistant, while the inner ring is made of high-strength forged steel, extending the overall service life by 25 times compared to traditional rubber tires and increasing load-bearing capacity by more than 30%. Low maintenance costs. The modular design allows for individual replacement of buffer blocks, eliminating the need for complete scrapping and reducing maintenance costs by over 50%. It boasts strong adaptability to various operating conditions, adapting to different load capacities and road conditions by adjusting the nitrogen spring pressure and hydraulic damper damping coefficient, making it highly versatile. Furthermore, it offers excellent operational stability, with the nitrogen spring buffer assembly and hydraulic damping buffer assembly arranged evenly in a ring, ensuring balanced force distribution, eliminating localized stress concentrations, preventing resonance, and significantly improving vehicle ride stability. Attached Figure Description

[0016] Figure 1 This is a perspective view illustrating the mechanical tire in this invention; Figure 2 This is a front view illustrating the mechanical tire in this invention; Figure 3 This is a schematic diagram illustrating the outer ring skeleton in this invention; Figure 4 This is a cross-sectional view illustrating the mechanical tire in this invention; Figure 5 This is a schematic diagram illustrating the nitrogen spring buffer assembly and the anti-disengagement limiting assembly in this invention.

[0017] Explanation of reference numerals in the attached drawings: 1. Composite outer tire carcass; 11. Outer tire skeleton; 111. Groove; 112. Inner inner wall of the tire; 113. Second hinge seat; 114. Fourth hinge seat; 115. Countersunk hole; 12. Buffer block; 121. Positioning block; 122. Threaded hole; 2. Inner tire hub; 21. First hinge seat; 22. Third hinge seat; 3. Nitrogen spring buffer assembly; 31. Nitrogen spring; 4. Hydraulic damping buffer assembly; 41. Hydraulic damping buffer; 5. Anti-detachment limiting assembly; 51. First connecting arm; 52. Second connecting arm. Detailed Implementation

[0018] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0019] Embodiment 1 of the present invention The present invention provides a high-buffered mechanical tire comprising a composite outer tire body 1, an inner wheel hub 2, a nitrogen spring buffer assembly 3, a hydraulic damping buffer assembly 4, and an anti-slip limit assembly 5. The components work together to achieve the core performance of high load-bearing capacity, high buffering capacity, and high anti-slipping capacity.

[0020] The composite outer tire carcass 1 includes a buffer block 12 and an outer ring skeleton 11. The buffer block 12 is made of polyurethane elastomer, specifically a wear-resistant, highly elastic, and tear-resistant polyester-type polyurethane elastomer with a Shore hardness of 85-95A. The outer ring skeleton 11 is made of Q355 wear-resistant alloy steel. The buffer block 12 forms the tread surface, and its outer surface can be fitted with anti-slip patterns. For lightweight design, the outer ring skeleton 11 can be replaced with a carbon fiber skeleton.

[0021] A groove 111 is formed on the outer circumferential wall of the outer ring frame 11, and the groove 111 is arranged around the outer ring frame 11. Multiple buffer blocks 12 are evenly distributed along the outer circumferential surface of the outer ring frame 11. In this embodiment, 20 buffer blocks 12 are provided. A positioning block 121 is fixed to the side of the buffer block 12 near the groove 111. The positioning block 121 is integrally formed with the buffer block 12. A countersunk hole 115 is formed on the outer ring frame 11, and a threaded hole 122 is formed on the side wall of the positioning block 121. The locking bolt passes through the countersunk hole 115 and is threadedly connected to the threaded hole 122. The countersunk hole 115 is designed to ensure that the screw head of the locking bolt is fully embedded and does not protrude from the tire surface, avoiding interference and wear during operation. Each buffer block 12 is fixed by 4 locking bolts, two of which are located on one side of the buffer block 12, and the other two are located on the other side of the buffer block 12.

[0022] The inner wheel hub 2 is made of 42CrMo high-strength alloy structural steel, which is integrally forged and tempered. After tempering, the hardness is HRC35-42, which ensures the wheel hub's load-bearing strength, impact resistance and fatigue life, and avoids deformation and cracking under heavy load.

[0023] The inner wheel hub 2 is used to connect with the vehicle axle. The inner side of the inner ring has a weight reduction hole, which is circular or elliptical. Without reducing the structural strength, the overall weight of the tire is reduced, thus reducing the vehicle's energy consumption.

[0024] The inner wheel hub 2 is located at the center of the outer frame 11, and a gap is provided between the outer sidewall of the inner wheel hub 2 and the inner sidewall of the outer frame 11. The nitrogen spring buffer assembly 3, the hydraulic damping buffer assembly 4, and the anti-detachment limiting assembly 5 are all located between the outer sidewall of the inner wheel hub 2 and the inner sidewall 112 of the outer frame 11. The nitrogen spring buffer assembly 3, the hydraulic damping buffer assembly 4, and the anti-detachment limiting assembly 5 are provided on both the front and rear sides of the tire. The front and rear sides of the tire are along the centerline of the tire; one side of the tire is the front side, and the other side is the rear side.

[0025] Multiple first hinge seats 21 are fixed on the outer wall of the inner rim hub 2, and multiple second hinge seats 113 are fixed on the inner sidewall 112 of the outer rim frame 11. The nitrogen spring buffer assembly 3 includes multiple sets of nitrogen springs 31, each set of nitrogen springs 31 having two springs, and the multiple sets of nitrogen springs 31 are evenly distributed along the circumference of the inner rim hub 2. The two nitrogen springs 31 in each set of nitrogen springs 31 are arranged in a figure-eight pattern, such as... Figure 5 As shown, A and B are a set of nitrogen springs 31. In this embodiment, three sets of nitrogen springs 31 are provided on one side of the tire.

[0026] The hydraulic damping buffer assembly 4 includes multiple hydraulic damping buffers 41, which are distributed along the circumference of the inner wheel hub 2, and are located between two adjacent sets of nitrogen springs 31. In this embodiment, three hydraulic damping buffers 41 are provided on one side of the tire.

[0027] One end of the nitrogen spring 31 is hinged to the first hinge seat 21 on the inner rim hub 2, and the other end of the nitrogen spring 31 is hinged to the second hinge seat 113 fixed on the inner sidewall 112 of the outer rim frame 11. One end of the hydraulic damping buffer 41 is hinged to the first hinge seat 21, and the other end of the hydraulic damping buffer 41 is hinged to the second hinge seat 113.

[0028] The nitrogen spring 31 is a heavy-duty nitrogen spring with a rated load capacity of 10-18kN and a stroke of 60-120mm. The nitrogen spring 31 provides the main elastic support force, adapting to heavy-duty load requirements and buffering road impacts. The hydraulic damper 41 is a bidirectional hydraulic damper with a damping coefficient of 250-550N•s / m. The piston rod surface is chrome-plated for corrosion protection. The cylinder end is hinged to the inner ring, and the piston rod end is hinged to the outer ring. It is used to absorb vibration energy, suppress the rebound resonance of the nitrogen spring 31, quickly dampen vibrations, and improve driving stability.

[0029] The anti-detachment limiting component 5 includes multiple articulated connecting arms, including a first connecting arm 51 and a second connecting arm 52, which are hinged together. Multiple third hinge seats 22 are fixed to the outer wall of the inner rim hub 2, and multiple fourth hinge seats 114 are fixed to the inner sidewall 112 of the outer rim frame 11. The first connecting arm 51 is hinged to the third hinge seat 22, and the second connecting arm 52 is hinged to the fourth hinge seat 114. The first connecting arm 51 and the second connecting arm 52 are made of 40Cr alloy structural steel. Multiple articulated connecting arms are arranged along the circumference of the inner rim hub 2. The fourth hinge seat 114, the second connecting arm 52, and the first connecting arm 51 form a Z-shaped structure. This Z-shaped structure acts as an axial limiting stop, physically restricting the relative axial displacement between the inner and outer rings. Even if the screws loosen or break, the Z-shaped connecting arms can hold the inner and outer rings in place, completely eliminating the safety hazard of the inner ring falling off or the outer ring coming out, thus achieving double anti-detachment protection. In this embodiment, three Z-shaped connecting arms are provided on one side of the tire.

[0030] The beneficial effects of this application are: 1. High safety against detachment: The Z-shaped connecting arm structure fundamentally eliminates the risk of axial movement and detachment of the inner and outer rings, making it suitable for extreme working conditions such as mining and heavy loads, and eliminating safety hazards. 2. Excellent shock absorption effect: the nitrogen spring 31 and the hydraulic damper 41 work together, with a long buffer stroke and good shock absorption effect. The vibration attenuation efficiency is more than 60% higher than that of traditional tires, protecting the vehicle chassis and frame. 3. Long structural strength and service life: the outer ring buffer block is 12 wear-resistant and crack-resistant, and the inner ring is made of high-strength forged steel. The overall service life is 25 times longer than that of traditional rubber tires, and the load-bearing capacity is increased by more than 30%. 4. Low maintenance cost: Modular and split design, buffer block 12 can be replaced individually, without the need for complete scrapping, reducing operation and maintenance costs by more than 50%; 5. It has strong adaptability to working conditions. By adjusting the pressure of the nitrogen spring 31 and the damping coefficient of the hydraulic damper 41, it can be adapted to different load weights and different road conditions, making it highly versatile. 6. Good operational stability: The nitrogen spring buffer assembly 3 and the hydraulic damping buffer assembly 4 are evenly arranged in a ring, with balanced force distribution, no local stress concentration, and avoidance of resonance, which greatly improves the vehicle's driving stability.

[0031] Embodiment 2 of the present invention Mechanical tires specifically designed for heavy-duty loaders in mining operations.

[0032] Composite outer ring carcass 1: Polyester polyurethane + Q355 outer ring skeleton 11 composite material, Shore hardness 90A, outer diameter 1250mm; Inner ring hub 2: 42CrMo steel forged and tempered, hardness HRC38-40, with 8 circular weight reduction holes; Buffer assembly: 31 nitrogen springs with a rated load of 15kN and a stroke of 100mm; 41 hydraulic dampers with a damping coefficient of 450N•s / m. Anti-detachment components: 8 40CrZ-type connecting arms, evenly arranged circumferentially; Assembly process: First, hinge the two ends of the nitrogen spring 31 and the hydraulic damper 41 to the corresponding positions of the inner and outer rings, then install the Z-shaped connecting arm, adjust the preload of the buffer assembly, and complete the assembly.

[0033] Embodiment 3 of the present invention Mechanical tires specifically designed for heavy engineering transportation.

[0034] Composite outer ring carcass 1: Polyester polyurethane + wear-resistant alloy steel skeleton, Shore hardness 92A, outer diameter 1100mm; Inner ring hub 2: 42CrMo steel forged and tempered, with a hardness of HRC36-41, and has 6 oval weight reduction holes. Buffer assembly: 12 nitrogen springs with a rated load of 12kN and a stroke of 80mm 31, and 6 hydraulic dampers with a damping coefficient of 350N•s / m 41; Anti-detachment component: 6 40CrZ-type connecting arms, evenly arranged circumferentially.

[0035] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-impact mechanical tire, characterized in that: The tire includes a composite outer ring carcass (1), an inner ring hub (2), a nitrogen spring buffer assembly (3), a hydraulic damping buffer assembly (4), and an anti-detachment limiting assembly (5). The composite outer ring carcass (1) includes an outer ring skeleton (11) and multiple buffer blocks (12) disposed on the outer circumference of the outer ring skeleton (11). The inner ring hub (2) is coaxially disposed inside the outer ring skeleton (11) and forms a gap with the inner sidewall of the outer ring skeleton (11). The nitrogen spring buffer assembly (3) includes multiple sets of nitrogen springs (31), with each set of nitrogen springs (31) having its two ends hinged to the outer wall of the inner wheel hub (2) and the inner side wall (112) of the outer wheel frame (11), respectively. The hydraulic damping buffer assembly (4) includes multiple hydraulic damping buffers (41), with each hydraulic damping buffer (41) having its two ends hinged to the outer wall of the inner wheel hub (2) and the inner sidewall (112) of the tire body, respectively. The anti-detachment limiting component (5) includes multiple articulated connecting arms, each of which is hinged at both ends to the outer wall of the inner rim hub (2) and the inner sidewall (112) of the tire body, respectively, to limit the axial relative displacement between the inner rim hub (2) and the outer rim frame (11).

2. The high-impact mechanical tire according to claim 1, characterized in that: The articulated connecting arm includes a first connecting arm (51) and a second connecting arm (52). One end of the first connecting arm (51) is hinged to the inner wheel hub (2), and the other end of the first connecting arm (51) is hinged to one end of the second connecting arm (52). The other end of the second connecting arm (52) is connected to the inner sidewall (112) of the tire.

3. A high-impact mechanical tire according to claim 1, characterized in that: The nitrogen spring buffer assembly (3), the hydraulic damping buffer assembly (4) and the anti-detachment limiting assembly (5) are all located on both sides of the tire along the center line direction, and the assemblies on each side are evenly distributed along the circumference of the inner wheel hub (2).

4. A high-impact mechanical tire according to claim 3, characterized in that: Each set of nitrogen springs (31) includes two nitrogen springs (31) arranged in a figure-eight pattern; a hydraulic damping buffer (41) is disposed between two adjacent sets of nitrogen springs (31).

5. The high-impact mechanical tire according to claim 1, characterized in that: The buffer block (12) is made of polyurethane elastomer and is fixed to the outer circumferential wall of the outer ring frame (11) by locking bolts.

6. A high-impact mechanical tire according to claim 5, characterized in that: An annular groove (111) is provided on the outer circumferential wall of the outer ring skeleton (11), and a positioning block (121) is provided on the buffer block (12). The positioning block (121) is embedded in the annular groove (111), and the locking bolt passes through the countersunk hole (115) on the outer ring skeleton (11) and connects with the threaded hole (122) on the positioning block (121).

7. A high-impact mechanical tire according to claim 1, characterized in that: The nitrogen spring (31) is a heavy-duty nitrogen spring (31) with a rated load of 10-18kN and a stroke of 60-120mm; the hydraulic damping buffer (41) is a bidirectional hydraulic damper with a damping coefficient of 250-550N•s / m.

8. A high-impact mechanical tire according to claim 1, characterized in that: The buffer block (12) is a polyester polyurethane elastomer with a Shore hardness of 85-95A, the outer ring skeleton (11) is a wear-resistant alloy steel or carbon fiber skeleton; the inner ring hub (2) is made of 42CrMo high-strength alloy structural steel by integral forging and tempering, and the hardness after tempering is HRC35-42.

9. A high-impact mechanical tire according to claim 1, characterized in that: The inner side of the inner hub (2) is provided with circular or elliptical weight reduction holes for weight reduction.

10. A high-impact mechanical tire according to any one of claims 1-9, characterized in that: Suitable for heavy-duty loaders in mining or heavy-duty engineering transport vehicles, including: When used in a heavy-duty loader for mining, the number of nitrogen springs (31) is 12 with a rated load of 15kN and a stroke of 100mm, the number of hydraulic damping buffers (41) is 6 with a damping coefficient of 450N•s / m, and the number of anti-detachment limit components (5) is 8. When used in heavy engineering transport vehicles, the number of nitrogen springs (31) is 12 with a rated load of 12kN and a stroke of 80mm, the number of hydraulic damping buffers (41) is 6 with a damping coefficient of 350N•s / m, and the number of anti-detachment limit components (5) is 6.

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