Rigidity-variable tire air shortage auxiliary supporting device

Abstract

The invention provides a variable-rigidity tire air shortage auxiliary supporting device. The variable-rigidity tire air shortage auxiliary supporting device comprises a tire body supporting mechanism, a mounting seat mechanism and a supporting connecting mechanism, the tire body supporting mechanism comprises a plurality of arc-shaped supporting plates, the mounting seat mechanism comprises an outer ring fixing base and an inner ring rotating base, and the supporting connecting mechanism comprises a plurality of supporting bodies; the supporting body comprises a fixed rod, a movable rod and arc-shaped supporting rods, the fixed rod is fixed in circular holes of the two arc-shaped supporting rods and fixedly connected with the inner ring rotating base, the movable rod is arranged in arc-shaped sliding holes of the two arc-shaped supporting rods in a sliding mode, and the movable rod is connected with the outer ring fixing base; the upper ends of the supporting bodies are movably connected with the arc-shaped supporting plates, and each arc-shaped supporting plate is connected with two supporting bodies. When the supporting body is turned over in the forward direction, the arc-shaped supporting plate is closed, and when the supporting body is turned over in the reverse direction, the arc-shaped supporting plate is opened and supports the air-deficient tire. The supporting body is used for supporting the air-deficient tire, so that the risk of instability during air-deficient driving of the tire can be reduced, and the air-deficient driving capability of the tire is improved.

Description

Technical Field

[0001] This invention relates to the field of tire internal support technology, specifically to a variable stiffness tire run-flat auxiliary support device. Background Technology

[0002] If a tire goes flat while a car is in motion, it can cause uneven tire rolling radius, leading to vehicle instability and, in severe cases, tire blowouts or tire detachment from the bead. To improve tire safety, it is necessary to research tire run-flat support devices. These devices are simple in structure, easy to install, and enable vehicles to continue driving even with a flat tire.

[0003] Current internally supported safety tires typically use solid metal or polymer materials, resulting in a large overall mass and a radius smaller than the tire's free-rolling radius. This inconsistency in radius means the tire can still rub against other parts of the vehicle during continuous driving. Conventional internal supports are often made of a single metal or polyurethane material, which is also quite heavy, impacting normal tire operation. During operation, they directly contact the tire's inner wall, leading to excessive tire stiffness. Impacts from road bumps and shocks significantly affect other components. Therefore, current tire internal support systems cannot fully meet the driving needs of vehicles on different road surfaces. Based on this, the present invention provides a variable stiffness tire run-flat assist support device to solve the above problems. Summary of the Invention

[0004] This invention addresses the problems of existing technologies by providing a variable stiffness tire run-flat support device. This device overcomes the issues of vehicle instability caused by changes in the inner support diameter, the invariable tire stiffness during inner support operation, and the large mass of the tire. When a tire equipped with this support device is run-flat, the stiffness of the support device changes according to different road impact loads to adapt to various road conditions. Furthermore, the support device has retractable and extendable states, effectively saving installation space, and in the extendable state, it brings the tire closer to its inflated radius. This improves tire stability and driving range.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This invention provides a variable stiffness tire run-flat assist support device, comprising a tire carcass support mechanism, a mounting base mechanism, and a support connection mechanism. The tire carcass support mechanism is located outside the mounting base mechanism and includes several arc-shaped support plates for supporting the tire. The mounting base mechanism includes an outer ring fixed base and an inner ring rotating base, the inner ring rotating base being rotatably mounted within the outer ring fixed base. The support connection mechanism includes several support bodies, each support body including a fixed rod, a movable rod, and two parallel arc-shaped support rods. The bottom end of each arc-shaped support rod has a circular hole, and the middle end of each arc-shaped support rod has an arc-shaped sliding hole. The fixed rod is simultaneously inserted into and fixed within the circular holes of the two arc-shaped support rods. The fixed rod is connected to the inner ring rotating base at both ends; the movable rod is simultaneously inserted into the arc-shaped sliding holes of the two arc-shaped support rods and can move along the arc-shaped sliding holes, and the movable rod is connected to the outer ring fixed base at both ends; the upper end of the support body is movably connected to the arc-shaped support plate, and each arc-shaped support plate connects two support bodies; the inner surface of the arc-shaped support plate is provided with a first connector and a second connector, the first connector is fixedly connected to the arc-shaped support plate, the second connector is slidably connected to the arc-shaped support plate, and the two support bodies are respectively hinged to the first connector and the second connector; when the support body is flipped forward, the arc-shaped support plate closes, and when the support body is flipped backward, the arc-shaped support plate opens and supports the deflated tire.

[0007] Furthermore, the inner ring rotating base is provided with a through hole at the connection with the fixed rod, and the inner wall of the outer ring fixed base is provided with a ball head groove adapted to the moving trajectory of the fixed rod; the two ends of the fixed rod pass through the through hole of the inner ring rotating base and are slidably disposed in the ball head groove, and the two ends of the fixed rod can make a certain radial displacement in the through hole. When the support body is flipped, the two ends of the fixed rod slide in the ball head groove.

[0008] Furthermore, the end of the ball head slide is provided with a locking groove, the central axis of the locking groove is parallel to the central axis of the fixing rod, and the locking groove is connected to the ball head slide; the end of the fixing rod is provided with an elastic ball head, which slides into the locking groove and locks.

[0009] Furthermore, a torsion spring is provided at the lower part of the support body. The torsion spring is connected to the fixed rod on one side and fixedly connected to the inner ring rotating base on the other side. When the arc-shaped support plate is closed, the torsion spring is in a compressed state.

[0010] Furthermore, the two side walls of the outer ring fixing base are respectively provided with outer ring grooves, and the two side walls of the outer ring fixing base are respectively hinged with hydraulic push-pull rods. One end of the hydraulic push-pull rod is hinged to the outer ring fixing base, and the other end is hinged to the movable rod passing through the outer ring groove. The hydraulic push-pull rod can drive the movable rod to move along the arc-shaped sliding hole.

[0011] Furthermore, a movable rod fixing mechanism is provided within the outer ring groove. This mechanism includes a first movable block, a second movable block, a third movable block, and at least one sliding rod. A through hole communicating with the outer ring groove is provided on the side wall of the outer ring fixing base. The sliding rod is slidably disposed within the through hole, with its inner end fixedly connected to the first movable block. A first spring is sleeved on the sliding rod, distributed between the first movable block and the outer ring groove wall. The second movable block is movably connected to the lower end of the first movable block via a first torsion spring and a pin. The third movable block… The blocks are distributed below the first movable block and are movably mounted in the outer ring groove via a second torsion spring and a pin. When the hydraulic push-pull rod drives the movable rod to move upward along the arc-shaped sliding hole, the movable rod pushes the second movable block to rotate clockwise, and the movable rod pushes the third movable block to rotate clockwise. The end of the third movable block near the first movable block pushes the first movable block to move upward until the end of the third movable block is engaged with one side of the first movable block. When the end of the third movable block is engaged with the first movable block, the third movable block supports the movable rod, and the second movable block contacts the third movable block.

[0012] Furthermore, a first panel and a second panel are fixedly disposed within the outer ring groove; the thickness of the first panel and the second panel is less than the thickness of the side wall of the outer ring fixed base, and the inner end faces of the first panel and the second panel are flush with the inner end faces of the outer ring fixed base; a space for the passage of the movable rod is provided between the first panel and the second panel; a first slide rail is provided on the first panel, the first slide rail is adapted to the movement trajectory of the first movable block, the first movable block is slidably connected to the first panel through the slider and the first slide rail, and the pin of the third movable block is rotatably connected to the second panel.

[0013] Furthermore, an arc-shaped slide rod is fixedly installed in the outer ring groove; the third movable block is provided with a sliding hole adapted to the arc-shaped slide rod, and the movement trajectory of the sliding hole coincides with that of the arc-shaped slide rod. When the third movable block is flipped, the slide rod can pass through the sliding hole of the third movable block; a spring is sleeved on the arc-shaped slide rod, one end of the spring is connected to the outer ring fixed base, and the other end is connected to the third movable block, and the diameter of the spring is larger than the diameter of the sliding hole.

[0014] Furthermore, the first connectors are distributed at the ends of the arc-shaped support plates, and the first connectors connecting each arc-shaped support plate are distributed at the same end of the arc-shaped support plate.

[0015] Furthermore, the outer ring fixing base is provided with an annular slide rail, and the inner ring rotating base is slidably connected to the outer ring fixing base through the annular slide rail; the outer surface of the arc-shaped support plate has the same curvature as the inner surface of the tire, and can fit in close contact with the inside of the tire.

[0016] The beneficial effects of this invention are:

[0017] (1) This invention discloses a variable stiffness tire deflation auxiliary support device, which uses a metal support body and a support plate to support the tire, thereby achieving the load-bearing capacity of the traditional tire internal support body and effectively reducing the risk of instability when driving with a flat tire, and improving the tire deflation range.

[0018] (2) This invention discloses a variable stiffness tire deflation auxiliary support device, which has a contracted state and an extended state. It can be extended in advance according to the air pressure, and the extension is accelerated by using a torsion spring and a rotating base to reduce the risk of impact on the structure during the extension. In the contracted state, it occupies little space. In the extended state, the tire support plate is close to the inner wall of the tire, and the radius change is small after the tire deflates, which reduces the risk of tire instability caused by the radius change.

[0019] (3) This invention discloses a variable stiffness tire run-flat auxiliary support device. The stiffness of the metal support body is changed by the movement of the movable rod in the arc-shaped sliding hole of the metal support body. Under the action of the auxiliary support device, the run-flat tire has the containment characteristics of an inflated tire, which can cope with different road conditions and ultimately improve the tire's driving range. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the support body in its contracted state according to the present invention;

[0021] Figures 2-3 This is a schematic diagram of the unfolded state of the support body of the present invention;

[0022] Figure 4 This is a schematic diagram of the support body after it has been unfolded and before the movable rod has moved.

[0023] Figure 5 This is a schematic diagram of the movable rod moving after the support body of the present invention is unfolded;

[0024] Figure 6 This is a schematic diagram of the support body and the arc-shaped support plate of the present invention;

[0025] Figure 7 This is an isometric view of the arc-shaped support plate and the support connection mechanism of the present invention;

[0026] Figure 8 This is a schematic diagram of the supporting connection mechanism;

[0027] Label name in the image:

[0028] 1. Arc-shaped support plate; 3. Support body; 3-1. Arc-shaped sliding hole; 3A. First connecting piece; 3B. Second connecting piece; 4. Outer ring fixed base; 4-1. Outer ring groove; 4-2. Ball head sliding groove; 5. Inner ring rotating base; 6. Hydraulic push-pull rod; 8. Movable rod; 9. Fixed rod; 10. First movable block; 11. Torsion spring; 12. Third movable block; 13. Slide rod; 14. First spring; 15. First panel; 16. Second panel; 17. Arc-shaped slide rod; 18. Second movable block; 19. Cover plate. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example 1

[0031] like Figures 1-8 As shown, the present invention provides a variable stiffness tire run-flat assist support device, including a tire body support mechanism, a mounting base mechanism and a support connection mechanism. The tire body support mechanism is located outside the mounting base mechanism and includes four arc-shaped support plates 1 for supporting the tire. The outer surface of the arc-shaped support plates 1 has the same curvature as the inner surface of the tire and can fit in close contact with the inside of the tire.

[0032] The mounting base mechanism includes an outer ring fixed base 4 and an inner ring rotating base 5. The inner ring rotating base 5 is rotatably mounted inside the outer ring fixed base 4 via an annular slide rail, and can rotate relative to the outer ring fixed base 4. Both the outer ring fixed base 4 and the inner ring rotating base 5 are annular structures with a U-shaped cross-section.

[0033] The supporting connection mechanism includes eight support bodies 3. Each support body 3 includes a fixed rod 9, a movable rod 8, and two parallel arc-shaped support rods. The bottom end of each arc-shaped support rod has a circular hole, and the middle end of each arc-shaped support rod has an arc-shaped sliding hole 3-1. The fixed rod 9 is simultaneously inserted into and fixed within the circular holes of the two arc-shaped support rods, and both ends of the fixed rod 9 are connected to the inner ring rotating base 5. The movable rod 8 is simultaneously inserted into the arc-shaped sliding holes 3-1 of the two arc-shaped support rods, and can move along the arc-shaped sliding holes 3-1. Both ends of the movable rod 8 are connected to the outer ring fixed base 4.

[0034] The upper end of the support body 3 is movably connected to the arc-shaped support plate 1. Each arc-shaped support plate 1 connects two support bodies 3. A first connector 3A and a second connector 3B are provided on the inner surface of the arc-shaped support plate 1. The first connector 3A is fixedly connected to the arc-shaped support plate 1, and the second connector 3B is slidably connected to the arc-shaped support plate 1. The two support bodies 3 are hinged to the first connector 3A and the second connector 3B, respectively. The first connectors 3A are distributed at the ends of the arc-shaped support plates 1, and the first connectors 3A connecting each arc-shaped support plate 1 are distributed at the same end of the arc-shaped support plate 1. When the support body 3 is flipped forward, the arc-shaped support plate 1 closes; when the support body 3 is flipped backward, the arc-shaped support plate 1 opens and supports the deflated tire.

[0035] The inner ring rotating base 5 is provided with a through hole at the connection with the fixed rod 9, and the inner wall of the outer ring fixed base 4 is provided with a ball head groove 4-2 adapted to the moving trajectory of the fixed rod 9. The two ends of the fixed rod 9 pass through the through hole of the inner ring rotating base 5 and slide in the ball head groove 4-2 (the two ends of the fixed rod 9 can make a certain radial displacement in the through hole of the inner ring rotating base 5). When the support body 3 is flipped, the two ends of the fixed rod 9 slide in the ball head groove 4-2.

[0036] The outer ring fixing base 4 has two side walls respectively provided with outer ring grooves 4-1, and two side walls of the outer ring fixing base 4 are respectively hinged with hydraulic push-pull rods 6. One end of the hydraulic push-pull rod 6 is hinged to the outer ring fixing base 4, and the other end is hinged to the movable rod 8 passing through the outer ring groove 4-1. The hydraulic push-pull rod 6 can drive the movable rod 8 to move along the arc-shaped sliding hole 3-1.

[0037] Application process of this embodiment:

[0038] When the tire is in a normal state, all eight support bodies 3 are closed and housed within the outer ring fixed base 4, with the fixed rods 9 positioned at the far end of the ball joint groove 4-2. When the tire leaks air, the inner ring rotating base 5 and the fixed rods 9 rotate clockwise together, causing the fixed rods 9 to slide to the other end of the ball joint groove 4-2, while the movable rod 8 remains fixed during this process. At this point, the eight support bodies 3 are open, thus supporting the arc-shaped support plates 1. This causes the four arc-shaped support plates 1 to unfold, forming a circular tire support mechanism to support the leaking tire. The four arc-shaped support plates 1 can be detachably connected end-to-end via magnetic blocks, making the structure more stable. After the support operation is completed, the hydraulic push-pull rod 6 is activated. The hydraulic push-pull rod 6 pushes the movable rod 8 upward along the arc-shaped sliding hole 3-1, increasing the support rigidity. When it is necessary to restore the original position, first activate the hydraulic push-pull rod 6 to return the movable rod 8 to its original position. Then, the inner ring rotating base 5 and the fixed rod 9 rotate counterclockwise together, so that the fixed rod 9 slides back to the far end of the ball head slide groove 4-2. The 8 sets of support bodies 3 and the 4 arc-shaped support plates 1 close and are re-stored in the outer ring fixed base 4.

[0039] In this embodiment, the drive mechanism for rotating the inner ring base 5 can be designed as a motor and a gear. The drive mechanism is installed inside the outer ring fixed base 4. A rack is provided at the bottom of the inner ring rotating base 5, and a slotted hole is provided in the outer ring fixed base 4. The motor meshes with the gear, which passes through the slotted hole and meshes with the rack at the bottom of the inner ring rotating base 5. The motor drives the gear to rotate, and the gear drives the inner ring rotating base 5 to rotate through the rack.

[0040] Example 2

[0041] This embodiment provides a variable stiffness tire run-flat auxiliary support device, whose main structure is the same as that of Embodiment 1. The difference is that: in this embodiment, the inner ring rotating base 5 is not equipped with a drive mechanism, and the opening and closing of the tire support mechanism is not driven by the inner ring rotating base 5 as a power source.

[0042] Specifically, the end of the ball head slide 4-2 is provided with a locking groove, the central axis of which is parallel to the central axis of the fixing rod 9, and the locking groove is connected to the ball head slide 4-2, with an arc-shaped transition between them. The end of the fixing rod 9 is provided with an elastic ball head, which includes an elastic element and a ball head. The fixing rod 9 is connected to the ball head through the elastic element. The elastic ball head can be locked when it slides into the locking groove.

[0043] like Figure 8 As shown, a torsion spring 11 is provided at the lower part of the support body 3. The torsion spring 11 is connected to the fixed rod 9 on one side and fixedly connected to the inner ring rotating base 5 on the other side. When the arc-shaped support plate 1 is closed, the torsion spring 11 is in a compressed state.

[0044] like Figure 7 As shown, the outer ring fixing base 4 has an outer ring groove 4-1 on its outer side wall. Two hydraulic push-pull rods 6 are hinged to each other on the two side walls of the outer ring fixing base 4. One end of the hydraulic push-pull rod 6 is hinged to the outer ring fixing base 4, and the other end is hinged to a movable rod 8 that passes through the outer ring groove 4-1. The hydraulic push-pull rod 6 can drive the movable rod 8 to move along the arc-shaped sliding hole 3-1.

[0045] Application process of this embodiment:

[0046] When the tire is in a normal state, all eight support bodies 3 are closed and housed within the outer ring fixing base 4. At this time, the fixing rods 9 are located in the locking grooves at the far end of the ball joint slide 4-2 and locked in place, while the torsion springs 11 on the support bodies 3 are compressed. When the tire leaks air, the hydraulic push-pull rod 6 is activated, pushing the movable rod 8 upwards. This causes the movable rod 8 to move upwards along the arc-shaped sliding hole 3-1, providing an upward force to the support bodies 3. Under the influence of this upward force and the arc-shaped transition, the fixing rod 9 disengages from the locking groove and enters the ball joint slide 4-2. Under the action of the torsion spring 11, the fixing rod 9 automatically slides to the other end of the ball joint slide 4-2, while the movable rod 8 remains fixed during this process. At this point, the eight support bodies 3 are open, thus supporting the arc-shaped support plates 1. This causes the four arc-shaped support plates 1 to unfold, forming a circular tire support mechanism, thereby supporting the leaking tire. After the support operation is completed, activate the hydraulic push-pull rod 6 to push the movable rod 8 upward along the arc-shaped sliding hole 3-1, which can increase the support rigidity.

[0047] Example 3

[0048] This embodiment provides a variable stiffness tire deflation auxiliary support device, whose main structure is the same as that of Embodiment 1. The difference is that this embodiment also has a movable rod fixing mechanism. When the 8 sets of support bodies 3 are unfolded and the movable rod 8 moves upward along the arc-shaped sliding hole 3-1, the movable rod 8 can be assisted in supporting the movable rod 8 through the movable rod fixing mechanism.

[0049] Specifically, the movable rod fixing mechanism is located within the outer ring groove 4-1. The movable rod fixing mechanism includes a first movable block 10, a second movable block 18, a third movable block 12, and two sliding rods 13. For example... Figures 4-5 and Figures 7-8 As shown,

[0050] The outer ring fixed base 4 has a through hole on its side wall that communicates with the outer ring groove 4-1. The slide rod 13 is slidably disposed in the through hole. The inner end of the slide rod 13 is fixedly connected to the first movable block 10, and a first spring 14 is sleeved on the slide rod 13. The first spring 14 is distributed between the first movable block 10 and the wall of the outer ring groove 4-1. The second movable block 18 is movably connected to the lower end of the first movable block 10 through a first torsion spring and a pin. The third movable block 12 is distributed below the first movable block 10 and is movably installed in the outer ring groove 4-1 through a second torsion spring and a pin. When the hydraulic push-pull rod 6 drives the movable rod 8 to move upward along the arc-shaped slide hole 3-1, the movable rod 8 pushes the second movable block 18 to rotate clockwise (rotate outward). The movable rod 8 pushes the third movable block 12 to rotate clockwise. The end of the third movable block 12 near the first movable block 10 pushes the first movable block 10 to move upward until the end of the third movable block 12 is engaged with one side of the first movable block 10. When the end of the third movable block 12 engages with the first movable block 10, the third movable block 12 supports the movable rod 8, and the second movable block 18 contacts the third movable block 12.

[0051] As a further preferred embodiment of the present invention, a first panel 15 and a second panel 16 are fixedly disposed within the outer ring groove 4-1; the thickness of the first panel 15 and the second panel 16 is less than the thickness of the side wall of the outer ring fixed base 4, and the inner end faces of the first panel 15 and the second panel 16 are flush with the inner end faces of the outer ring fixed base 4; a space for the passage of the movable rod 8 is provided between the first panel 15 and the second panel 16. A first slide rail is provided on the first panel 15, and the first slide rail is adapted to the movement trajectory of the first movable block 10. The first movable block 10 is slidably connected to the first panel 15 through a slider and the first slide rail, and the pin of the third movable block 12 is rotatably connected to the second panel 16.

[0052] As a further preferred embodiment of the present invention, an arc-shaped slide rod 17 is fixedly disposed within the outer ring groove 4-1, and the third movable block 12 is provided with a sliding hole adapted to the arc-shaped slide rod 17. The movement trajectory of the sliding hole coincides with that of the arc-shaped slide rod 17. When the third movable block 12 is flipped, the arc-shaped slide rod 17 can pass through the sliding hole of the third movable block 12. A spring is sleeved on the arc-shaped slide rod 17. One end of the spring is connected to the outer ring fixed base 4, and the other end is connected to the third movable block 12. The diameter of the spring is larger than the diameter of the sliding hole.

[0053] In this embodiment, both the second movable block 18 and the third movable block 12 are L-shaped. When the support body 3 is in the closed state, one end of the second movable block 18 is movably connected to the first movable block 10, and the other end is in contact with one end of the third movable block 12. The other end of the third movable block 12 is connected to the spring on the arc-shaped slide rod 17, and the other end of the third movable block 12 is slidably connected to the arc-shaped slide rod 17.

[0054] Application process of this embodiment:

[0055] When the 8 sets of support bodies 3 are deployed, the hydraulic push-pull rod 6 pushes the movable rod 8 to move upward along the arc-shaped sliding hole 3-1. The movable rod 8 pushes the second movable block 18 to rotate clockwise (outward), and the movable rod 8 also pushes the third movable block 12 to rotate clockwise. The end of the third movable block 12 near the first movable block 10 pushes the first movable block 10 (along the first slide rail) to move upward. The first movable block 10 drives the second movable block 18 to move upward, and the spring on the slide rod 13 is compressed. When the end of the third movable block 12 is engaged with one side of the first movable block 10, the movable rod 8 stops moving upward. At this time, the upper surface of the horizontal section of the third movable block 12 contacts the movable rod 8, providing support for the movable rod 8. The second movable block 18 returns to its position under the action of the torsion spring, and the upper surface of the horizontal section of the second movable block 18 contacts the lower surface of the horizontal section of the third movable block 12, providing further support.

[0056] Before the 8 sets of support bodies 3 are closed, the hydraulic push-pull rod 6 pushes the movable rod 8 upward along the arc-shaped sliding hole 3-1 again. The movable rod 8 pushes the first movable block 10 upward until the third movable block 12 is disengaged from the first movable block 10. The third movable block 12 flips back to its original position under the action of the torsion spring and / or spring. The second movable block 18 flips outward again. The hydraulic push-pull rod 6 drives the movable rod 8 downward along the arc-shaped sliding hole 3-1, so that the movable rod 8 returns to its initial position.

[0057] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the principles of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should be considered within the scope of protection of the present invention.

Claims

1. A variable stiffness tire run-flat assist support device, characterized in that, This includes the tire body support mechanism, the mounting base mechanism, and the support connection mechanism; The tire support mechanism is located on the outside of the mounting base mechanism and includes several arc-shaped support plates (1) for supporting the tire; The mounting base mechanism includes an outer ring fixed base (4) and an inner ring rotating base (5), the inner ring rotating base (5) being rotatably disposed within the outer ring fixed base (4); The supporting connection mechanism includes several supporting bodies (3). Each supporting body (3) includes a fixed rod (9), a movable rod (8), and two parallel arc-shaped supporting rods. The bottom end of the arc-shaped supporting rod has a round hole, and the middle end of the arc-shaped supporting rod has an arc-shaped sliding hole (3-1). The fixed rod (9) is inserted into and fixed in the round holes of the two arc-shaped supporting rods, and both ends of the fixed rod (9) are connected to the inner ring rotating base (5). The movable rod (8) is inserted into the arc-shaped sliding hole (3-1) of the two arc-shaped supporting rods and can move along the arc-shaped sliding hole (3-1). Both ends of the movable rod (8) are connected to the outer ring fixed base (4). The upper end of the support body (3) is movably connected to the arc-shaped support plate (1), and each arc-shaped support plate (1) connects two support bodies (3); the inner surface of the arc-shaped support plate (1) is provided with a first connector (3A) and a second connector (3B), the first connector (3A) is fixedly connected to the arc-shaped support plate (1), the second connector (3B) is slidably connected to the arc-shaped support plate (1), and the two support bodies (3) are respectively hinged to the first connector (3A) and the second connector (3B); When the support body (3) flips in the forward direction, the arc-shaped support plate (1) closes. When the support body (3) flips in the reverse direction, the arc-shaped support plate (1) opens and supports the deflated tire.

2. The variable stiffness tire run-flat assist support device according to claim 1, characterized in that, The inner ring rotating base (5) is provided with a through hole at the connection with the fixed rod (9), and the inner wall of the outer ring fixed base (4) is provided with a ball head groove (4-2) adapted to the moving trajectory of the fixed rod (9); The two ends of the fixing rod (9) are slidably disposed in the ball head groove (4-2) through the through hole of the inner ring rotating base (5). The two ends of the fixing rod (9) can make a certain radial displacement in the through hole. When the support body (3) is flipped, the two ends of the fixing rod (9) slide in the ball head groove (4-2).

3. The variable stiffness tire run-flat assist support device according to claim 2, characterized in that, The end of the ball head slide (4-2) is provided with a locking groove. The central axis of the locking groove is parallel to the central axis of the fixing rod (9), and the locking groove is connected to the ball head slide (4-2). The end of the fixing rod (9) is provided with an elastic ball head, which slides into the locking groove and locks.

4. The variable stiffness tire run-flat assist support device according to claim 1, characterized in that, The support body (3) is provided with a torsion spring (11) at the bottom. The torsion spring (11) is connected to the fixed rod (9) on one side and fixedly connected to the inner ring rotating base (5) on the other side. When the arc-shaped support plate (1) is closed, the torsion spring (11) is in a compressed state.

5. The variable stiffness tire run-flat assist support device according to claim 1, characterized in that, The outer ring fixing base (4) has two side walls respectively provided with outer ring grooves (4-1), and two side walls of the outer ring fixing base (4) are respectively hinged with hydraulic push-pull rods (6). One end of the hydraulic push-pull rod (6) is hinged to the outer ring fixing base (4), and the other end is hinged to the movable rod (8) passing through the outer ring groove (4-1). The hydraulic push-pull rod (6) can drive the movable rod (8) to move along the arc-shaped sliding hole (3-1).

6. The variable stiffness tire run-flat assist support device according to claim 5, characterized in that, The outer groove (4-1) is provided with a movable rod fixing mechanism, which includes a first movable block (10), a second movable block (18), a third movable block (12) and at least one sliding rod (13); The outer ring fixed base (4) has a through hole on its side wall that communicates with the outer ring groove (4-1). The slide rod (13) is slidably disposed in the through hole. The inner end of the slide rod (13) is fixedly connected to the first movable block (10). A first spring (14) is sleeved on the slide rod (13). The first spring (14) is distributed between the first movable block (10) and the wall of the outer ring groove (4-1). The second movable block (18) is movably connected to the lower end of the first movable block (10) through a first torsion spring and a pin. The third movable block (12) is distributed below the first movable block (10) and is movably installed in the outer ring groove (4-1) through a second torsion spring and a pin. When the hydraulic push-pull rod (6) drives the movable rod (8) to move upward along the arc-shaped sliding hole (3-1), the movable rod (8) pushes the second movable block (18) to rotate clockwise, and the movable rod (8) pushes the third movable block (12) to rotate clockwise. The end of the third movable block (12) close to the first movable block (10) pushes the first movable block (10) to move upward until the end of the third movable block (12) is engaged with one side of the first movable block (10). When the end of the third movable block (12) is engaged with the first movable block (10), the third movable block (12) supports the movable rod (8), and the second movable block (18) contacts the third movable block (12).

7. The variable stiffness tire run-flat assist support device according to claim 6, characterized in that, The outer groove (4-1) is fixedly provided with a first panel (15) and a second panel (16); The thickness of the first panel (15) and the second panel (16) is less than the thickness of the side wall of the outer ring fixed base (4), and the inner end face of the first panel (15) and the second panel (16) is flush with the inner end face of the outer ring fixed base (4). A space is provided between the first panel (15) and the second panel (16) for the passage of the movable rod (8). The first panel (15) is provided with a first slide rail, which is adapted to the movement trajectory of the first movable block (10). The first movable block (10) is slidably connected to the first panel (15) through a slider and the first slide rail. The pin of the third movable block (12) is rotatably connected to the second panel (16).

8. The variable stiffness tire run-flat assist support device according to claim 6, characterized in that, An arc-shaped slide rod (17) is fixedly installed inside the outer ring groove (4-1); The third movable block (12) is provided with a sliding hole that matches the arc-shaped slide rod (17). The movement trajectory of the sliding hole coincides with that of the arc-shaped slide rod (17). When the third movable block (12) is flipped, the arc-shaped slide rod (17) can pass through the sliding hole of the third movable block (12). A spring is sleeved on the arc-shaped slide rod (17). One end of the spring is connected to the outer ring fixed base (4), and the other end is connected to the third movable block (12). The diameter of the spring is larger than the diameter of the sliding hole.

9. The variable stiffness tire run-flat assist support device according to claim 1, characterized in that, The first connector (3A) is distributed at the end of the arc-shaped support plate (1), and the first connector (3A) connecting each arc-shaped support plate (1) is distributed at the same end of the arc-shaped support plate (1).

10. The variable stiffness tire run-flat assist support device according to claim 1, characterized in that, The outer ring fixing base (4) is provided with an annular slide rail, and the inner ring rotating base (5) is slidably connected to the outer ring fixing base (4) through the annular slide rail; the outer surface of the arc-shaped support plate (1) has the same curvature as the inner surface of the tire, and can fit in close to the inside of the tire.

Images