Tire inner supporting system, dismounting and mounting method thereof and mining dump truck

Abstract

The invention discloses a tire inner supporting system, a dismounting and mounting method thereof and a mining dump truck in the technical field of tire inner supporting, and the inner supporting system comprises a flexible ring and a rigid ring; the number of the flexible rings is at least two, one sides of the two flexible rings are attached to the inner walls of the two sides of the tire inner ring, the other sides of the two flexible rings are provided with first slopes, and the inner rings of the flexible rings are hooped on the rim body; the rigid rings are of a sectional type and are arranged between the flexible rings on the two sides, the adjacent sections of the rigid rings are connected through wedge-shaped structures or Z-shaped connecting rods, and loaded compression spaces are reserved in the radial direction of the connecting positions. The two sides of the rigid ring are provided with second inclined faces in contact fit with the first inclined faces of the flexible ring. Through the structural design of the flexible ring and the rigid ring, the flexible ring and the rigid ring are matched with a rim in a tire, the vertical load and the lateral load of a vehicle can be borne at the same time, and the rollover risk during steering of the vehicle is reduced; the combination of the flexible ring and the rigid ring ensures the bearing capacity of the inner support system and also has a vibration reduction function.

Description

Technical Field

[0001] This invention belongs to the field of tire internal support technology, and more specifically, relates to a tire internal support system, its disassembly and assembly method, and a mining dump truck. Background Technology

[0002] As the only part of a mining dump truck that comes into contact with the road surface, the tire's performance directly affects the vehicle's safety, handling stability, comfort, power, and economy. Mining dump trucks operate under harsh conditions; poor road conditions, heavy loads, long-distance driving, and high temperatures are all contributing factors to tire blowouts. Once a blowout occurs, the tire loses pressure instantly, unable to support the vehicle, severely impacting its stability and ride comfort, and potentially causing rollovers, resulting in personal injury and significant economic losses.

[0003] Tire runners are auxiliary support structures mounted on the rim that support the vehicle in the event of a tire blowout. Under normal driving conditions, the runner assembly does not participate in the tire system's operation. However, in the event of a blowout or a drop in tire pressure to a certain level, the runner acts as the primary component bearing the vehicle's weight, simultaneously working with the rim to restrain the tire, preventing it from coming off the bead or running over, and ensuring the vehicle can continue driving safely for a certain distance. Safety tires equipped with runners offer advantages such as simple structure and strong zero-pressure load-bearing capacity, making them a promising type of safety tire.

[0004] Existing tire inner support technology is mainly used in passenger cars, commercial vehicles, and light military vehicles. There are few heavy-duty tire inner support structures developed specifically for mining dump trucks. The technical solutions and innovations are concentrated on the structural details and connection methods of the inner support, and these structures are all single-ring structures. They can only transfer tire loads to the rim at the contact point with the inner support, and cannot transfer the tire's axial load. Therefore, existing inner support structures can only bear a certain vertical load and cannot bear the vehicle's lateral loads. Mining dump trucks have large weights and loads, and their operating conditions include somewhat sloping mining roads; existing technologies cannot meet their usage requirements. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned shortcomings by providing a tire internal support system and its disassembly and assembly method, as well as a mining dump truck equipped with the internal support system. The support system, through a combination of rigid and flexible rings, can bear both the vertical load and lateral load of the vehicle, reducing the risk of rollover when the vehicle is turning, and also has a vibration damping function.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: In a first aspect, the present invention provides a tire internal support system, comprising a flexible ring and a rigid ring; At least two flexible rings are provided. One side of each flexible ring is attached to the inner wall of both sides of the inner ring of the tire, and the other side is provided with a first inclined surface. The inner ring of the flexible ring is clamped on the rim body. The rigid ring is segmented and is located between the flexible rings on both sides. Adjacent segments of the rigid ring are connected by a wedge structure or a Z-shaped connecting rod, and a radial space for load compression is reserved at the connection point. The rigid ring has a second inclined surface on both sides that contacts and cooperates with the first inclined surface of the flexible ring.

[0007] Furthermore, the flexible ring is a one-piece rubber ring to achieve vibration damping, and a metal skeleton is provided inside the rubber ring to increase its structural strength. Specifically, the shape of the flexible ring can be set to approximately a right-angled triangle in cross-section.

[0008] Furthermore, the inner ring of the flexible ring is provided with heat dissipation grooves to improve the heat dissipation efficiency of the tire when driving under zero air pressure and prevent the tire from being damaged quickly due to overheating.

[0009] Furthermore, the outer ring of the rigid ring is provided with circumferential grooves to increase the axial friction with the tire tread. Specifically, the rigid ring can be configured to have a cross-section approximately equal to an isosceles trapezoid.

[0010] Furthermore, the rigid ring can be configured with 3 or 4 segments, and the connection between them is a non-rigid limiting connection, so that the rigid ring is connected as a whole and has a contraction space. The connection is radially reserved with a load compression space, so that the rigid ring automatically contracts after being subjected to radial force, reducing the impact on the wheel dynamic balance caused by the rigid ring being loaded after a tire blowout and its rolling diameter decreasing.

[0011] Furthermore, the angle between the inclined surface of the wedge structure and the radial force direction at its location is smaller than the friction angle between the rigid ring materials, which ensures that the connected rigid rings will not loosen after being radially compressed, but will only tighten further.

[0012] Furthermore, the rigid ring is made of nylon, rigid polyurethane, aluminum alloy, or magnesium alloy, and has sufficient strength to support the vehicle's balance.

[0013] Furthermore, in practical applications, the number of flexible and rigid rings can be increased as needed.

[0014] In a second aspect, the present invention also provides a method for disassembling and assembling the tire internal support system described in the first aspect, comprising: Lay the tires flat; Remove the tire's lock ring, seal ring, seat ring, and pressure ring on the same side as the lock ring in sequence; A flexible ring is inserted into the tire, with its outer side against one sidewall of the tire's inner ring. Assemble a rigid ring inside the tire and place the second inclined surface of one side of the rigid ring against the first inclined surface of the already installed flexible ring. Insert another flexible ring into the tire, so that its first inclined surface abuts against the second inclined surface on the other side of the rigid ring; Press the inner support system, along with the tire, into the rim body; Install the removed pressure ring, seat ring, sealing ring, and locking ring in sequence.

[0015] Furthermore, before pressing the inner support system together with the tire into the rim body, the rim body, the pressure ring on the opposite side of the lock ring, and the tire bead are lubricated.

[0016] Furthermore, before sequentially installing the removed pressure ring, seat ring, sealing ring, and locking ring, the seat ring and pressure ring are first lubricated.

[0017] Thirdly, the present invention also provides a mining dump truck, wherein the tires are equipped with the tire internal support system described in the first aspect.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: The internal support system provided by this invention uses a structure design of flexible and rigid rings to fit inside the tire and the rim. After a tire blowout, the tread load can be transferred to the rim body and pressure ring of the rim. It can bear the vertical load of the vehicle as well as the lateral load, with strong load-bearing capacity and reduced risk of rollover when the vehicle is turning. The combination of flexible and rigid rings ensures the load-bearing capacity of the internal support system and also has a certain vibration damping function. The internal support system provided by this invention has a simple structure, consisting only of a flexible ring and a rigid ring, both of which can be replaced independently, making it easy to disassemble and maintain. The internal support system provided by this invention has a wide range of applications, suitable for flat-bottomed rims and wide flat-bottomed rims, such as the five-piece rims commonly used in mining dump trucks; in addition to mining dump trucks, it can also be applied to road vehicles such as passenger cars and commercial vehicles. Attached Figure Description

[0019] Figure 1 A cross-sectional view of the wheel rim and inner support system provided in an embodiment of the present invention; Figure 2 This is a structural diagram of the rigid ring connection described in the embodiment; Figure 3 A flowchart illustrating a method for disassembling and assembling a tire internal support system, provided as an embodiment of the present invention; 1. Tire; 2. First flexible ring; 3. Rigid ring; 31. Wedge structure; 4. Second flexible ring; 5. First pressure ring; 6. Rim body; 7. Second pressure ring; 8. Seat ring; 9. Sealing ring; 10. Locking ring. Detailed Implementation

[0020] Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings and specific examples.

[0021] In the following description, certain specific details are set forth for the purpose of illustrating various disclosed embodiments in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the art will recognize that embodiments may be practiced without one or more of these specific details. In other instances, well-known apparatuses, structures, and techniques associated with this application may not have been shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0022] Unless the context requires otherwise, throughout the specification and claims, the word “comprising” and its variations, such as “including” and “having”, shall be understood to have an open, inclusive meaning, that is, to be interpreted as “including, but not limited to”.

[0023] Throughout this specification, references to "an embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the appearance of "in an embodiment" or "an embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0024] The singular forms “a” and “the” used in this specification and the appended claims include plural references unless otherwise expressly stated herein. It should be noted that the term “or” is generally used to mean “and / or” unless otherwise expressly stated herein.

[0025] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0026] Example 1 This embodiment provides a tire internal support system, such as Figure 1 As shown, it includes a first flexible ring 2, a rigid ring 3, and a second flexible ring 4. The first flexible ring 2 and the second flexible ring 4 are installed on the rim body 6, close to the inner wall of the tire bead on both sides of the tire 1, and the inner diameter of the first flexible ring 2 and the second flexible ring 4 is slightly smaller than the outer diameter of the rim body so that the flexible ring is tightly clamped on the rim body; the rigid ring 3 is placed between the first flexible ring 2 and the second flexible ring 4.

[0027] In this embodiment, the cross-sections of the first flexible ring 2 and the second flexible ring 4 are approximately right-angled triangles, with a first inclined surface on the side away from the inner ring of the tire 1. Both the inner rings of the first flexible ring 2 and the second flexible ring 4 have heat dissipation grooves to improve the heat dissipation efficiency of the tire when driving under zero air pressure, preventing the tire from being damaged rapidly due to overheating. Both flexible rings are integral rubber rings to achieve vibration damping, and the rubber rings have an internal metal skeleton to increase their structural strength.

[0028] In this embodiment, the rigid ring 3 has an approximate isosceles trapezoidal cross-section, with second inclined surfaces on both sides that contact and engage with the first inclined surface of the flexible ring. The outer ring has circumferential grooves to increase axial friction with the tire tread. The rigid ring 3 in this embodiment is made of rigid polyurethane, possessing sufficient strength to support vehicle balance.

[0029] like Figure 2 As shown, in this embodiment, the rigid ring 3 is a four-segment split type. The adjacent segments of the rigid ring 3 are connected by a wedge structure 31, and a radial compression space is reserved at the connection point so that the rigid ring 3 automatically contracts after being subjected to radial force, thereby reducing the impact of the rigid ring 3 being loaded and its rolling diameter decreasing after a tire blowout on the dynamic balance of the wheel.

[0030] like Figure 2 As shown, in this embodiment, the angle α between the inclined surface of the wedge structure 31 and the radial force direction at its location is less than the friction angle between the materials of the rigid ring 3, which enables the connected rigid ring 3 to not loosen after being radially compressed, but only to tighten further.

[0031] In actual use, the tire internal support system described in this embodiment is equipped with a first flexible ring 2, a rigid ring 3, a second flexible ring 4, and a tire pressure monitoring system (TPMS) for each wheel. The tire pressure monitoring system is an existing and mature device, which is generally integrated on the tire valve 1, and will not be described in detail in this invention.

[0032] When the mining dump truck is driving normally, the first flexible ring 2 and the second flexible ring 4 do not move relative to the tire bead, the rigid ring 3 does not contact the tire tread, and the inner support system does not affect the normal driving of the vehicle.

[0033] When a mining dump truck tire leaks air or bursts, tire 1 loses pressure, and the inner wall of the tread is pressed against the outer ring of the rigid ring 3. The load is transferred through the rigid ring 3 to the first flexible ring 2 and the second flexible ring 4, and then from the first flexible ring 2 and the second flexible ring 4 to the rim body (resisting the vehicle's vertical load) and the first pressure ring 5 and the second pressure ring 7 (resisting the vehicle's lateral load), thus supporting the vehicle to continue driving and preventing rollover. At the same time, the tire pressure monitoring system issues a low-inflation alarm, prompting the driver to take immediate action.

[0034] Specifically, when the multi-segmented rigid ring 3 is subjected to the radial force of the tire, the wedge-shaped structure 31 at its connection point pulls the adjacent rigid ring segments 3 closer together, achieving automatic radial contraction of the rigid ring 3. This reduces the impact on the wheel dynamic balance caused by the reduced rolling diameter of the rigid ring 3 due to load after a tire blowout. Furthermore, the angle between the inclined surface of the wedge-shaped structure 31 and the direction of the radial force at its location is smaller than the friction angle between the materials of the rigid ring 3, ensuring that the rigid ring 3 will not loosen after being compressed and contracted.

[0035] This structure can simultaneously transfer tread load to the axial and radial directions of the rim. Therefore, this inner support system can bear the vehicle's vertical load as well as the lateral load, reducing the risk of rollover when the vehicle is turning.

[0036] In some other embodiments, the rigid ring 3 may also be made of nylon, aluminum alloy or magnesium alloy; the rigid ring 3 may also be divided into three sections.

[0037] In some other embodiments, adjacent segments of the rigid ring 3 are also connected by Z-shaped links, which serve as a non-rigid limiting connection and allow the rigid rings to be connected as a whole with a contraction space.

[0038] In some other embodiments, the number of flexible rings and rigid rings 3 can also be increased as needed. Those skilled in the art can make specific settings according to actual application scenarios, which will not be elaborated upon in this invention.

[0039] Example 2 The five-piece rim is a common rim structure for mining dump trucks. It is a wide flat-bottom rim and includes a rim body 6, a seat ring 8, a pressure ring, a lock ring 10, and a sealing ring 9. The pressure rings include a first pressure ring 5 and a second pressure ring 7, which are respectively located on both sides of the tire 1.

[0040] This embodiment provides a method for disassembling and assembling the tire internal support system described in Embodiment 1, applicable to tires 1 using five-piece rims. Figure 3 This is a flowchart illustrating the assembly and disassembly method of the tire internal support system described in this embodiment. This flowchart merely shows the logical sequence of the method described in this embodiment; however, in other possible embodiments of the invention, different methods may be used, provided there are no conflicts. Figure 3 Complete the steps shown or described in the order indicated.

[0041] like Figure 3 As shown, the disassembly and assembly method includes the following steps: S1: Lay tire 1 flat and remove tire 1 in sequence the lock ring 10, sealing ring 9, seat ring 8 and the second pressure ring 7 on the same side as the lock ring 10; S2: Insert the first flexible ring 2 into the tire 1, so that its outer side is against one side wall of the inner ring of the tire 1; S3: Assemble the rigid ring 3 inside the tire 1, and make the second inclined surface on one side of the rigid ring 3 abut against the first inclined surface of the installed first flexible ring 2; S4: Insert the second flexible ring 4 into the tire 1, so that its first inclined surface abuts against the second inclined surface on the other side of the rigid ring 3; S5: The rim body 6 for lubricating the rim, the first pressure ring 5 on the opposite side of the lock ring 10, and the tire bead of the tire 1; S6: Press the inner support system together with the tire 1 into the rim body 6; S7: Lubricate the seat ring 8 and the second pressure ring 7 that were removed in S1; S8: Install the removed second pressure ring 7, seat ring 8, sealing ring 9 and locking ring 10 in sequence.

[0042] During the above disassembly and assembly process, the first pressure ring 5 does not need to be removed.

[0043] All parts of this invention not described in detail can be implemented using existing well-known technologies known to those skilled in the art.

[0044] Example 3 This embodiment provides a mining dump truck, in which the tire 1 is equipped with the tire internal support system described in the first aspect.

[0045] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and principles of the described embodiments, and these modifications and variations should also be considered within the scope of protection of the present invention.

Claims

1. A tire innersupport system characterized by, The flexible ring and the rigid ring are included. The flexible ring is provided with two sides, one side of which is attached to the inner wall of the tire inner ring, and the other side is provided with a first inclined surface. The rigid ring is segmented and arranged between the two flexible rings, and the adjacent segments of the rigid ring are connected by a wedge-shaped structure or a Z-shaped connecting rod.

2. The in-tire support system of claim 1, wherein, The flexible ring is an integrated rubber ring, and the inside of the rubber ring is provided with a metal reinforcing framework.

3. The in-tire support system of claim 1, wherein, The inner ring of the flexible ring is provided with a heat dissipation groove.

4. The in-tire support system of claim 1, wherein, The outer ring of the rigid ring is provided with a circumferential groove.

5. The in-tire support system of claim 1, wherein, The angle between the inclined surface of the wedge-shaped structure and the radial force direction of its position is smaller than the friction angle between the materials of the rigid ring.

6. The in-tire support system of claim 1, wherein, The material of the rigid ring is nylon, hard polyurethane, aluminum alloy or magnesium alloy.

7. A method of disassembling the tire inboard support system of claims 1-6, characterized in that, The method comprises the following steps: The locking ring, the sealing ring, the seat ring and the pressing ring on the same side of the locking ring of the tire are removed in sequence; A flexible ring is installed in the tire, and the outer side of the flexible ring is attached to one side of the side wall of the tire inner ring; A rigid ring is assembled in the tire, and the second inclined surface on one side of the rigid ring is attached to the first inclined surface of the installed flexible ring; Another flexible ring is installed in the tire, and the first inclined surface of the flexible ring is attached to the second inclined surface on the other side of the rigid ring; The inner support system is pressed into the rim body together with the tire; The above-mentioned pressing ring, seat ring, sealing ring and locking ring are installed in sequence.

8. The method of claim 7, wherein, Before the inner support system is pressed into the rim body together with the tire, the rim body, the pressing ring on the side different from the locking ring and the bead of the tire are lubricated.

9. The method of claim 7, wherein, Before the above-mentioned pressing ring, seat ring, sealing ring and locking ring are installed in sequence, the seat ring and the pressing ring are lubricated.

10. A mining dump truck characterized in that, The tire of the mine dump truck is provided with the tire inner support system according to any one of claims 1 to 6.

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