A safety tire inner support mechanism that can improve the ground adhesion performance after a flat tire

Abstract

The present invention discloses a safety tire inner support mechanism capable of improving the ground adhesion performance after a flat tire, which comprises an inner support base and a support device. The inner support base is fixedly installed on the surface of the rim, and an installation groove is arranged inside the inner support base. The support device is arranged in the installation groove. The support device includes a driving mechanism and an extended support body. The driving mechanism includes a detection support body, two sets of driven gear sets and two sets of accelerating gear sets. The detection support body includes a detection support body crown and a detection support body stem. The extended support body includes an extended support body crown, an extended support body stem and an extended support body truss. The support device further includes a locking mechanism. After the tire has a flat tire, the driving mechanism can drive the extended support body to unfold and lock, providing support force for the tire. The device of the present invention can unfold within a short time when the inner support contacts the ground, increasing the grounding area of the inner support, effectively reducing the out-of-control risk after a flat tire, and improving the stability and safety of the vehicle's zero-pressure continuous driving.

Description

Technical Field

[0001] The present invention relates to the technical field of inner support safety tires, and particularly relates to a safety tire inner support mechanism that can improve the grounding adhesion performance after a flat tire. Background Art

[0002] Currently, the mainstream explosion-proof safety tires can be mainly divided into two categories: pneumatic safety tires and non-pneumatic safety tires. The inner support safety tire belongs to the category of pneumatic safety tires and is a relatively widely used form, especially in the fields of military vehicle tires and heavy-duty radial tires. After a vehicle has a flat tire, the built-in auxiliary support body continues to support the vehicle for a certain distance.

[0003] However, in the field of military vehicle tires where the inner support safety tire is relatively maturely applied, it is often necessary to deal with special road conditions such as unconventional gravel roads and marsh roads. When driving on such roads, the probability of a flat tire is higher, and at the same time, the performance of the tire will be affected to a certain extent. Problems such as sinking and insufficient grip seriously threaten driving safety. Since the inner support body is placed inside the pneumatic tire, its width is limited and its strength is relatively large, resulting in a limited grounding area of the support body after a flat tire. Therefore, stress concentration and insufficient adhesion occur on the above-mentioned special roads, making it difficult for the vehicle to continue driving. Not only can't it achieve the ideal continuous driving ability, but it will even have a certain negative impact, resulting in worse handling and stability of the whole vehicle. Therefore, the present invention provides a safety tire inner support mechanism that can improve the grounding adhesion performance after a flat tire to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a safety tire inner support mechanism that can improve the grounding adhesion performance after a flat tire for the problems existing in the prior art.

[0005] The present invention is realized through the following technical solutions:

[0006] A safety tire inner support mechanism that can improve the grounding adhesion performance after a flat tire, comprising an inner support base and a plurality of groups of support devices; the inner support base is fixedly installed on the surface of the rim, an installation groove is provided inside the inner support base, and the support devices are arranged in the installation groove; the support device includes a driving mechanism and an extended support body. After the tire has a flat tire, the driving mechanism can drive the extended support body to unfold to provide support force for the tire.

[0007] Furthermore, the driving mechanism includes a detection support body, two sets of driven gear sets, and two sets of acceleration gear sets; the detection support body includes a detection support body crown and a detection support body stem. The detection support body crown is fixedly installed at one end of the detection support body stem away from the rim. Rack teeth are symmetrically arranged on both sides of the detection support body stem; the two sets of driven gear sets are mirror-symmetrically distributed on both sides of the detection support body and are respectively meshed with the rack teeth on the detection support body stem; the two sets of acceleration gear sets are mirror-symmetrically distributed on both sides of the detection support body and are respectively meshed with the two sets of driven gear sets; two sets of expansion support bodies are provided and are mirror-symmetrically distributed on both sides of the detection support body and are respectively meshed with the two sets of acceleration gear sets. After a tire blows out, the internal pressure changes. After the detection support body crown contacts the ground and moves upward, the detection support body stem drives the driven gear sets and the acceleration gear sets to rotate, thereby driving the expansion support bodies to unfold and providing support force for the tire.

[0008] Furthermore, each driven gear set includes two identical driven gears connected coaxially. Correspondingly, rack teeth corresponding to the two driven gears are symmetrically arranged on both sides of the detection support body stem respectively; each acceleration gear set includes one acceleration large gear and two identical acceleration small gears. The acceleration large gear and the acceleration small gears are connected coaxially. The two acceleration small gears are distributed on both sides of the acceleration large gear. The diameter and the number of teeth of the acceleration large gear are both larger than those of the acceleration small gears; the two acceleration small gears are respectively meshed with the two driven gears, and the acceleration large gear is meshed with the expansion support body. After the detection support body crown contacts the ground and moves upward, the detection support body stem drives the driven gears to rotate, the driven gears drive the acceleration small gears to rotate, the acceleration small gears drive the acceleration large gear to rotate, and the acceleration large gear drives the expansion support body to unfold and provides support force for the tire.

[0009] Furthermore, the expansion support body includes an expansion support body crown, an expansion support body stem, and an expansion support body truss. The expansion support body stem is inclined; rack teeth are arranged on the expansion support body stem and are meshed with the acceleration gear set; the expansion support body truss is installed at one end of the expansion support body stem away from the acceleration gear set, and the expansion support body crown is installed on the expansion support body truss. After a tire blows out, the internal pressure changes. After the detection support body crown contacts the ground and moves upward, it drives the driven gear sets and the acceleration gear sets to rotate, thereby driving the expansion support body stem to move, and thus driving the expansion support body truss and the expansion support body crown to unfold and providing support force for the tire.

[0010] Further, the device is also provided with a locking mechanism, which includes a locking limit block, an initial locking limit groove, an extended locking limit groove, and a connecting locking spring; both the initial locking limit groove and the extended locking limit groove are hemispherical grooves, distributed vertically, and are arranged in the rack groove of the detection support body; the locking limit block includes two groups of locking limit hemispheres, two groups of locking limit snap rings, and two groups of locking spring mounting posts. Among them, the locking limit hemispheres are adapted to the sizes of the initial locking limit groove and the extended locking limit groove; a through locking mechanism mounting hole is provided in the stem of the detection support body, and the locking mechanism mounting hole is horizontally distributed, and the middle diameter of the locking mechanism mounting hole is larger than the diameters at both ends; the connecting locking spring is arranged inside the locking mechanism mounting hole, and the two ends of the connecting locking spring are respectively connected to the locking spring mounting posts, the locking limit snap rings, and the locking limit hemispheres in sequence. The diameter of the locking limit snap ring is larger than the opening diameters at both ends of the locking mechanism mounting hole, so as to limit the connecting locking spring in the locking mechanism mounting hole; in the initial state, the locking limit block corresponds to the initial locking limit groove, and the locking limit hemispheres are located in the initial locking limit groove to achieve locking connection; when the stem of the detection support body is stressed and moves upward, the locking limit hemispheres are stressed and retracted into the locking mechanism mounting hole, and at this time the connecting locking spring is in a compressed state; when the stem of the detection support body reaches the end position, the locking limit block corresponds to the extended locking limit groove, and under the action of the connecting locking spring, the locking limit hemispheres enter the extended locking limit groove to achieve locking connection.

[0011] Further, extension support body teeth are provided on the stem of the extension support body. The extension support body teeth are arranged at the end of the rack on the stem of the extension support body, and the height of the extension support body teeth is higher than the height of other teeth on the rack to play a limiting role.

[0012] Further, two symmetrical triangular grooves are provided at one end of the inner support body base away from the rim; when the extension support body is in a non-expanded state, the extension support body truss is received in the triangular grooves, and the inner surface of the crown of the extension support body is attached to the inner support body base.

[0013] Further, the installation grooves provided in the inner support body base include an extension support body rack groove, an acceleration gear groove, a driven gear groove, and a detection support body rack groove, which respectively install the stem of the extension support body, the acceleration gear set, the driven gear set, and the stem of the detection support body; an acceleration gear shaft is provided in the acceleration gear groove, and the acceleration gear set is rotationally installed in the acceleration gear groove through the acceleration gear shaft; a driven gear shaft is provided in the driven gear groove, and the driven gear set is rotationally installed in the driven gear groove through the driven gear shaft.

[0014] Further, a number of conical anti-slip nails, or octopus tentacle-shaped suction cups, or strip-shaped heat dissipation grilles, or anti-slip stripes are evenly arranged on the outer surfaces of the extended support body crown and the detection support body crown; the arcs of the extended support body crown and the detection support body crown are the same as those of the inner support body base.

[0015] Further, one group or multiple groups of inner support body bases are provided; when multiple groups of inner support body bases are provided, the inner support body bases are connected end to end in sequence and distributed circumferentially along the rim, and adjacent inner support body bases are fixedly connected by inner support base assembly screws; the support devices are evenly distributed on the inner support body bases.

[0016] Further, three groups of inner support body bases are provided, which are arc-shaped structures with a central angle of 120° for each section. Hole positions are provided at the head and tail of the three groups of inner support body bases, and they are fixedly connected to each other by inner support base assembly screws.

[0017] Further, each group of inner support body bases includes one or more split seats, and an installation groove is provided between adjacent split seats for installing the support device. After installing the support device into the groove, adjacent two groups of split seats are bonded to form a whole.

[0018] Advantages of the present invention:

[0019] (1) The inner support body mechanism of the safety tire capable of improving the ground adhesion performance after a flat tire in the present invention retains the advantages of the traditional inner support, can effectively reduce the out-of-control risk after a flat tire, and ensure driving safety;

[0020] (2) The inner support body mechanism of the safety tire capable of improving the ground adhesion performance after a flat tire in the present invention can be deployed in a shorter time when the inner support body touches the ground, increase the grounding area of the inner support, and improve the stability and safety of the vehicle's zero-pressure continuous driving;

[0021] (3) The design of the anti-slip nails in the present invention can increase the friction between the inner support body and the inner surface of the tire or the ground under zero-pressure working conditions, improve the overall adhesion performance, thereby reducing the damage to the tire surface caused by a flat tire and the subsequent negative impacts, so as to adapt to different working conditions and road conditions;

[0022] (4) The shapes of the detection support body crown and the extended support body crown in the present invention can be modularly customized according to requirements, and can meet more diversified application scenarios. Description of the drawings

[0023] Figure 1 is a sectional view of the device of the present invention installed inside the tire (standard tire pressure working condition);

[0024] Figure 2 is a side view of the assembled present invention;

[0025] Figure 3 is a three-dimensional solid display diagram of the cross-section of the inner support base of the present invention;

[0026] Figure 4 is a three-dimensional solid display diagram of the driving mechanism and the extended support body of the present invention;

[0027] Figure 5 is a sectional view of the locking mechanism of the present invention;

[0028] Figure 6 is a sectional view (zero-pressure condition) of the present invention after being deployed on the ground;

[0029] Figure 7 is an isometric view of three modular designs of the crown of the extended support body of the present invention;

[0030] The reference signs in the drawings are:

[0031] 1, rim; 2, carcass; 3, inner support base; 31, acceleration gear shaft; 32, driven gear shaft; 33, split seat; 3a, triangular groove; 3b, extended support body rack groove; 3c, acceleration gear groove; 3d, driven gear groove; 3e, detection support body rack groove; 3f, initial locking limit groove; 3g, deployment locking limit groove; 4, driven gear set; 41, driven gear; 5, acceleration gear set; 51, acceleration large gear; 52, acceleration small gear; 6, extended support body; 61, extended support body crown; 62, extended support body stem; 63, extended support body truss; 64, extended support body limit tooth; 7, detection support body; 71, detection support body crown; 72, detection support body stem; 7a, locking mechanism mounting hole; 71-1, suction cup; 71-2, heat dissipation grille; 71-3, anti-slip stripe; 8, locking limit block; 81, locking limit hemisphere; 82, locking limit snap ring; 83, locking spring mounting post; 9, connecting locking spring; 10, anti-slip nail; 11, inner support base assembly screw; 12, ground. Detailed implementation manners

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] Embodiment 1

[0034] Refer to Figures 1 to 7, an embodiment of the present invention provides a safety tire inner support mechanism that can improve the ground adhesion performance after a flat tire, including an inner support base 3 and a plurality of groups of support devices; the inner support base 3 is fixedly installed on the surface of the rim 1, and an installation groove is provided in the inner support base 3, and the support devices are arranged in the installation groove; the support devices include a driving mechanism and an extended support body 6. After the tire has a flat tire, the driving mechanism can drive the extended support body 6 to unfold to provide support force for the tire.

[0035] Specifically, in this embodiment, the driving mechanism includes a detection support body 7, two groups of driven gear sets 4, and two groups of acceleration gear sets 5; the detection support body 7 includes a detection support body crown 71 and a detection support body stem 72. The detection support body crown 71 is fixedly installed at one end of the detection support body stem 72 away from the rim 1; the detection support body stem 72 is a strip-shaped structure perpendicular to the center position of the detection support body crown 71; racks are symmetrically arranged on both sides of the detection support body stem 72; the two groups of driven gear sets 4 are mirror-symmetrically distributed on both sides of the detection support body 7 and are respectively meshed with the racks of the detection support body stem 72; the two groups of acceleration gear sets 5 are mirror-symmetrically distributed on both sides of the detection support body 7 and are respectively meshed with the two groups of driven gear sets 4; two sets of the extended support bodies 6 are provided and are mirror-symmetrically distributed on both sides of the detection support body 7 and are respectively meshed with the two groups of acceleration gear sets 5.

[0036] In this embodiment, the extended support body 6 includes an extended support body crown 61, an extended support body stem 62, and an extended support body truss 63. The extended support body stem 62 is inclined; a rack is provided on the extended support body stem 62 and is meshed with the acceleration gear set 5; the extended support body truss 63 is installed at one end of the extended support body stem 62 away from the acceleration gear set 5, and the extended support body crown 61 is installed on the extended support body truss 63. The extended support body truss 63 is triangular to ensure the force stability of the extended support body 6.

[0037] In this embodiment, the extended support body crown 61 covers a part of the top surface and the side surface of the inner support base 3. Two symmetric triangular grooves 3a are provided at one end of the inner support base 3 away from the rim 1; when the extended support body 6 is in a non-unfolded state, the extended support body truss 63 is received in the triangular grooves 3a, the inner surface of the extended support body crown 61 is attached to the surface of the inner support base 3, covering the position of the triangular grooves 3a, and has a certain extension relative to the size of the triangular grooves 3a. At the same time, the extended support body truss 63 does not touch the inner support base 3.

[0038] After the tire bursts, the internal pressure changes, the detection support body crown 71 contacts the ground and moves upward, the detection support body stem 72 drives the driven gear set 4 and the acceleration gear set 5 to rotate, and then drives the expansion support body stem 62 to move, thereby driving the expansion support body truss 63 and the expansion support body crown 61 to expand, providing support for the tire. In the process of expanding the expansion support body 6 and contracting the detection support body 7, the expansion support body crown 61 and the detection support body crown 71 do not come into contact.

[0039] Example 2

[0040] The main structure of this embodiment is the same as that of Embodiment 1, except that a locking mechanism is further provided in this embodiment.

[0041] Specifically, refer to Figure 5 In this embodiment, the locking mechanism includes a locking limit block 8, an initial locking limit groove 3f, an expanded locking limit groove 3g and a connecting locking spring 9; the initial locking limit groove 3f and the expanded locking limit groove 3g are both hemispherical grooves, distributed up and down, and arranged in the rack groove 3e of the detection support body; the locking limit block 8 includes two groups of locking limit hemispheres 81, two groups of locking limit snap rings 82 and two groups of locking spring mounting columns 83, wherein the locking limit hemispheres 81 are adapted to the sizes of the initial locking limit groove 3f and the expanded locking limit groove 3g; the detection The stem portion 72 of the measuring support body is provided with a penetrating locking mechanism mounting hole 7a, and the locking mechanism mounting hole 7a is horizontally distributed. The middle diameter of the locking mechanism mounting hole 7a is larger than the diameter at both ends; the connecting locking spring 9 is arranged inside the locking mechanism mounting hole 7a, and the two ends of the connecting locking spring 9 are respectively connected to the locking spring mounting column 83, the locking limit snap ring 82 and the locking limit hemisphere 81 in sequence. The diameter of the locking limit snap ring 82 is larger than the opening diameter of the two ends of the locking mechanism mounting hole 7a, and the connecting locking spring 9 is limited in the locking mechanism mounting hole 7a.

[0042] In the initial state, the locking limit block 8 corresponds to the position of the initial locking limit groove 3f, and the locking limit hemisphere 81 is located in the initial locking limit groove 3f to realize the locking connection; during the unfolding process, the reaction force given to the crown 71 of the detection support body by the ground can make the locking limit block 8 disengage from the initial locking limit groove 3f, and the locking limit hemisphere 81 is retracted into the locking mechanism mounting hole 7a under the force, and the connecting locking spring 9 is in a compressed state at this time; when the stem 72 of the detection support body reaches the terminal position, the locking limit block 8 corresponds to the position of the unfolding locking limit groove 3g, and under the action of the connecting locking spring 9, the locking limit hemisphere 81 enters the unfolding locking limit groove 3g to realize the locking connection.

[0043] Example 3

[0044] The main structure of this embodiment is the same as that of Embodiment 2. The difference lies in that the specific structures of the driven gear set 4 and the acceleration gear set 5 are defined in this embodiment.

[0045] Specifically, referring to Figure 4 , in this embodiment, the driven gear set 4 includes two identical driven gears 41 connected coaxially. Correspondingly, racks corresponding to the two driven gears 41 are symmetrically arranged on both sides of the stem 72 of the detection support body; the acceleration gear set 5 includes a set of large acceleration gears 51 and two identical small acceleration gears 52. The large acceleration gear 51 and the small acceleration gears 52 are connected coaxially. The two small acceleration gears 52 are distributed on both sides of the large acceleration gear 51, and the number of teeth of the large acceleration gear 51 is twice that of the small acceleration gears 52; the two small acceleration gears 52 are respectively meshed with the two driven gears 41, and the large acceleration gear 51 is meshed with the expansion support body 6.

[0046] In this embodiment, expansion support body limit teeth 64 are provided on the stem 62 of the expansion support body. The expansion support body limit teeth 64 are arranged at the end of the rack on the stem 62 of the expansion support body, and the height of the expansion support body limit teeth 64 is higher than that of other teeth on the rack to play a limiting role.

[0047] During application, after the crown 71 of the detection support body contacts the ground and moves upward, the stem 72 of the detection support body drives the driven gear 41 to rotate. The driven gear 41 drives the small acceleration gear 52 to rotate. The small acceleration gear 52 drives the large acceleration gear 51 to rotate. The large acceleration gear 51 drives the expansion support body 6 to unfold to provide support force for the tire.

[0048] Embodiment 4

[0049] The main structure of this embodiment is the same as that of Embodiment 3. The difference lies in that the installation grooves provided inside the inner support body base 3 are defined in this embodiment.

[0050] Specifically, referring to Figure 3 , in this embodiment, the installation grooves provided inside the inner support body base 3 include an expansion support body rack groove 3b, an acceleration gear groove 3c, a driven gear groove 3d, and a detection support body rack groove 3e, which are respectively used to install the stem 62 of the expansion support body, the acceleration gear set 5, the driven gear set 4, and the stem 72 of the detection support body.

[0051] The detection support body rack groove 3e is located on the center line of the cross-section of the inner support body base 3, and a pair of extended support body rack grooves 3b, acceleration gear grooves 3c, and driven gear grooves 3d are symmetrically distributed on both sides; an acceleration gear shaft 31 is provided at the center of the acceleration gear groove 3c, and the acceleration gear set 5 is rotatably installed in the acceleration gear groove 3c through the acceleration gear shaft 31; a driven gear shaft 32 is provided at the center of the driven gear groove 3d, and the driven gear set 4 is rotatably installed in the driven gear groove 3d through the driven gear shaft 32. The extended support body stem 62 is slidably installed in the extended support body rack groove 3b, and the detection support body stem 72 is slidably installed in the detection support body rack groove 3e.

[0052] Embodiment 5

[0053] The main structure of this embodiment is the same as that of Embodiment 4, except that the outer surface structures of the extended support body crown 61 and the detection support body crown 71 are defined in this embodiment.

[0054] Specifically, referring to Figure 4 and 7 , a number of conical anti-slip nails 10 are evenly arranged on the outer surfaces of the extended support body crown 61 and the detection support body crown 71 to play an anti-slip role; or octopus tentacle-shaped suction cups 71-1 are evenly arranged on the outer surfaces of the extended support body crown 61 and the detection support body crown 71 to increase the adsorption performance between the inner support body 3 and the inner wall of the tire or the ground; or strip-shaped heat dissipation grilles 71-2 are evenly arranged on the outer surfaces of the extended support body crown 61 and the detection support body crown 71 to relieve the heat accumulation on the outer surface of the detection support body crown 71 caused by the high-speed rotation of the wheel under the zero-pressure continuous driving condition and improve the heat dissipation performance of the inner support body 3; or anti-slip stripes 71-3 similar to the tread of a traditional tire are evenly arranged on the outer surfaces of the extended support body crown 61 and the detection support body crown 71. According to different pattern shapes, the adaptability to different working conditions can be realized, such as improving the drainage performance, off-road performance, etc. of the inner support body during flat tire continuous driving.

[0055] In other embodiments of the present invention, the shapes of the extended support body crown 61 and the detection support body crown 71 and the auxiliary mechanisms on the outer surfaces can be modularly customized to adapt to different working conditions. In addition, the extended support body crown 61 and the detection support body crown 71 have the same radian as the inner support body base 3.

[0056] Embodiment 6

[0057] The main structure of this embodiment is the same as that of Embodiment 5, except that the number of the inner support body base 3 and the support device is defined in this embodiment.

[0058] Specifically, referring to Figure 2, in this embodiment, three sets of the inner support body bases 3 are provided, which are arc-shaped structures with a central angle of 120° for each of the three segments. Hole positions are provided at the head and tail of the three sets of inner support body bases 3, and they are fixedly connected to each other by the inner support base assembly screws 11. Among them, 4 sets of support devices are provided in each set of inner support body bases 3, and a total of 12 sets of support devices are provided for the three sets of inner support body bases 3. The 12 sets of support devices are evenly distributed along the circumferential direction. In other embodiments of the present invention, the numbers of the inner support body bases 3 and the support devices can also be set as required.

[0059] Refer to Figure 2 , in this embodiment, each set of inner support body bases 3 includes 5 split seats 33. An installation groove is provided between adjacent split seats 33 for installing 4 sets of support devices. After installing the support devices into the groove, adjacent two sets of split seats 33 are bonded to form a whole.

[0060] Principle and working process of the present invention:

[0061] Under the standard tire pressure condition, the inner support mechanism does not come into contact with the ground. The tire relies on the air pressure inside the tire to support the vehicle to drive, and its performance is the same as that of a traditional radial tire. At this time, the locking limit block 8 and the initial locking limit groove 3f cooperate with each other for locking and limiting. During the normal driving of the vehicle, each mechanism will not have relative movement, ensuring the stability of the inner support body structure.

[0062] When a tire blowout occurs to the vehicle, the air pressure inside the tire drops instantly. The detection support body crown 71 first contacts the ground and receives a vertically upward force. The locking limit block 8 is separated from the initial locking limit groove 3f under the reaction force from the ground; the detection support body crown 71 drives the detection support body stem 72 to move inward into the inner support body base 3 along the detection support body rack groove 3e. The rack of the detection support body stem 72 drives the driven gear 4 to rotate, and then drives the acceleration gear 5 to rotate, and then drives the expansion support body stem 62 to move along the expansion support body rack groove 3b, completing the expansion process of the expansion support body 6. And the acceleration of the expansion of the expansion support body 6 is realized through the acceleration large gear 51 and the acceleration small gear 52, increasing the grounding area of the inner support body.

[0063] When the wheel rotates one circle, all the expansion support bodies 6 can be expanded, thus increasing the overall grounding area of the inner support body. When the expansion support body 6 expands to a certain extent, the expansion support body crown 61 is flush with the detection support body crown 71 and they jointly contact the ground. At this time, the locking limit block 8 and the expansion locking limit groove 3g cooperate with each other for locking and limiting, ensuring that during the tire blowout and continued driving process, the relative movement of each mechanism component will not be caused by the rotation of the wheel.

[0064] During the process of zero-pressure continuous driving, there may be a certain relative sliding between the inner support body and the inner surface of the tire, or between the inner support body and the ground, which affects the stability of the whole vehicle. The anti-slip studs 10 provided on the outer surfaces of the detection support body crown 71 and the extended support body crown 61 can penetrate into the inner surface of the tire for fixation. If the tire burst is relatively strong and the tread is damaged, it can also increase the relative friction between the inner support body and the ground, thereby enhancing a certain grip and improving driving stability.

[0065] The shapes and structures of the detection support body crown 71 and the extended support body crown 61 can be modularly customized to meet different working conditions or road surfaces. For example, the outer surface of the extended support body crown 61 can be designed to be more conforming to the inner circle of the tire, further reducing the performance change after the tire bursts.

[0066] The above are only the preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should be regarded as within the protection scope of the present invention.

Claims

1. A safety tire inner support mechanism capable of improving the ground adhesion performance after a flat tire, characterized in that it includes an inner support base (3) and several groups of support devices; the inner support base (3) is fixedly installed on the surface of the rim (1), an installation groove is provided in the inner support base (3), and the support devices are arranged in the installation groove; the support device includes a driving mechanism and an extended support body (6). After the tire has a flat tire, the driving mechanism can drive the extended support body (6) to unfold to provide support force for the tire; the driving mechanism includes a detection support body (7), two groups of driven gear sets (4) and two groups of acceleration gear sets (5); the detection support body (7) includes a detection support body crown (71) and a detection support body stem (72). The detection support body crown (71) is fixedly installed at one end of the detection support body stem (72) far from the rim (1). Rack teeth are symmetrically arranged on both sides of the detection support body stem (72); the two groups of driven gear sets (4) are mirror-symmetrically distributed on both sides of the detection support body (7) and are respectively meshed with the rack teeth of the detection support body stem (72); the two groups of acceleration gear sets (5) are mirror-symmetrically distributed on both sides of the detection support body (7) and are respectively meshed with the two groups of driven gear sets (4); two extended support bodies (6) are provided and are mirror-symmetrically distributed on both sides of the detection support body (7) and are respectively meshed with the two groups of acceleration gear sets (5).

2. The safety tire inner support mechanism capable of improving the ground adhesion performance after a flat tire according to claim 1, characterized in that the driven gear set (4) includes two identical driven gears (41) connected coaxially. Correspondingly, rack teeth corresponding to the two driven gears (41) are symmetrically arranged on both sides of the detection support body stem (72); the acceleration gear set (5) includes an acceleration large gear (51) and two identical acceleration small gears (52). The acceleration large gear (51) and the acceleration small gears (52) are connected coaxially. The two acceleration small gears (52) are distributed on both sides of the acceleration large gear (51). The diameter and number of teeth of the acceleration large gear (51) are both larger than those of the acceleration small gears (52); the two acceleration small gears (52) are respectively meshed with the two driven gears (41), and the acceleration large gear (51) is meshed with the extended support body (6).

3. The safety tire inner support mechanism capable of improving the ground adhesion performance after a flat tire according to claim 1, characterized in that the extended support body (6) includes an extended support body crown (61), an extended support body stem (62) and an extended support body truss (63), and the extended support body stem (62) is inclined; rack teeth are provided on the extended support body stem (62) and are meshed with the acceleration gear set (5); the extended support body truss (63) is installed at one end of the extended support body stem (62) far from the acceleration gear set (5), and the extended support body crown (61) is installed on the extended support body truss (63).

4. The safety tire inner support mechanism capable of improving the ground adhesion performance after a flat tire according to claim 1, characterized in that A locking mechanism is also provided, and the locking mechanism includes a locking limit block (8), an initial locking limit groove (3f), an unfolding locking limit groove (3g), and a connecting locking spring (9); Both the initial locking limit groove (3f) and the unfolding locking limit groove (3g) are hemispherical grooves, which are distributed vertically and are arranged in the detection support body rack groove (3e); the locking limit block (8) includes two groups of locking limit hemispheres (81), two groups of locking limit snap rings (82), and two groups of locking spring mounting posts (83). Among them, the locking limit hemispheres (81) are adapted to the sizes of the initial locking limit groove (3f) and the unfolding locking limit groove (3g); The detection support body stem (72) is provided with a through locking mechanism mounting hole (7a), and the locking mechanism mounting hole (7a) is horizontally distributed. The middle diameter of the locking mechanism mounting hole (7a) is larger than the diameters at both ends; the connecting locking spring (9) is arranged inside the locking mechanism mounting hole (7a), and the two ends of the connecting locking spring (9) are sequentially connected to the locking spring mounting posts (83), the locking limit snap rings (82), and the locking limit hemispheres (81) respectively. The diameter of the locking limit snap ring (82) is larger than the opening diameters at both ends of the locking mechanism mounting hole (7a), so as to limit the connecting locking spring (9) in the locking mechanism mounting hole (7a); In the initial state, the locking limit block (8) corresponds to the initial locking limit groove (3f), and the locking limit hemisphere (81) is located in the initial locking limit groove (3f) to achieve locking connection; when the detection support body stem (72) is stressed and moves upward, the locking limit hemisphere (81) is stressed and retracts into the locking mechanism mounting hole (7a). At this time, the connecting locking spring (9) is in a compressed state; when the detection support body stem (72) reaches the end position, the locking limit block (8) corresponds to the unfolding locking limit groove (3g), and under the action of the connecting locking spring (9), the locking limit hemisphere (81) enters the unfolding locking limit groove (3g) to achieve locking connection.

5. The safety tire inner support body mechanism capable of improving the ground adhesion performance after a flat tire according to claim 3, wherein The extended support body stem (62) is provided with extended support body limit teeth (64), and the extended support body limit teeth (64) are arranged at the end of the rack on the extended support body stem (62), and the height of the extended support body limit teeth (64) is higher than the height of other teeth on the rack.

6. The safety tire inner support body mechanism capable of improving the ground adhesion performance after a flat tire according to claim 3, wherein Two symmetric triangular grooves (3a) are provided at one end of the inner support body base (3) away from the rim (1); When the extended support body (6) is in a non-unfolded state, the extended support body truss (63) is received in the triangular groove (3a), and the inner surface of the extended support body crown (61) is attached to the surface of the inner support body base (3).

7. The safety tire inner support body mechanism capable of improving the ground adhesion performance after a flat tire according to claim 3, wherein The installation grooves provided in the inner support body base (3) include an extended support body rack groove (3b), an acceleration gear groove (3c), a driven gear groove (3d), and a detection support body rack groove (3e), which respectively install the extended support body stem (62), the acceleration gear set (5), the driven gear set (4), and the detection support body stem (72); An acceleration gear shaft (31) is provided in the acceleration gear groove (3c), and the acceleration gear set (5) is rotatably installed in the acceleration gear groove (3c) through the acceleration gear shaft (31); a driven gear shaft (32) is provided in the driven gear groove (3d), and the driven gear set (4) is rotatably installed in the driven gear groove (3d) through the driven gear shaft (32).

8. The safety tire inner support body mechanism capable of improving the ground adhesion performance after a flat tire according to claim 3, characterized in that A plurality of anti-slip nails (10), suction cups (71-1), heat dissipation grilles (71-2), or anti-slip stripes (71-3) are uniformly arranged on the outer surfaces of the extended support body crown (61) and the detection support body crown (71); The extended support body crown (61) and the detection support body crown (71) have the same curvature as the inner support body base (3).

9. The safety tire inner support body mechanism capable of improving the ground adhesion performance after a flat tire according to claim 1, characterized in that One set or more sets of the inner support body bases (3) are provided; When multiple sets of inner support body bases (3) are provided, the inner support body bases (3) are connected end to end in sequence and are circumferentially distributed along the rim (1), and adjacent inner support body bases (3) are fixedly connected by inner support base assembly screws (11); The support devices are uniformly distributed on the inner support body base (3).

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