Gantry-type support body for bulletproof tire

Abstract

The present invention discloses a gantry-type support body for a bulletproof tire. The support body (1) is a circular ring body formed by a group of A-shaped support units (2) and a group of B-shaped support units (14) arranged at intervals. The A-shaped support unit and the B-shaped support unit both include a top plate (3). Positioning grooves (4) are provided at both ends of the top surface of the top plate of the A-shaped support unit, and positioning bosses (5) are provided at both ends of the top surface of the top plate of the B-shaped support unit. A group of connecting ears (6) are provided on the bottom surfaces of both ends of the top plate, and connecting holes (7) are provided on the connecting ears. Side wings (8) inclined outward are provided on both sides of the top plate. Ventilation holes (9) are distributed on the side wings. The A-shaped support unit and the B-shaped support unit are connected to form a circular ring-shaped support body via bolts (10). The present invention has the characteristics of low driving force loss, uniform mass, light weight, rim protection, simple structure, and easy installation. It can be used for vehicles with bulletproof and air leakage prevention requirements and has a good effect.

Description

Technical Field

[0001] The invention relates to a gantry type support body for a bulletproof tire, belonging to the technical field of safety tires. Background Art

[0002] Existing bulletproof tires typically incorporate a bulletproof support body, inner tube, or other supporting structure within a pneumatic tire. If the tire is punctured by a bullet, bursts while driving, or experiences a puncture or leak, the support body, inner tube, or other supporting structure (hereinafter collectively referred to as the support body) replaces the pneumatic tire to support the vehicle's weight and prevent the tire from falling off, allowing the vehicle to continue driving. Therefore, the support body is a key component of a bulletproof tire, and its structure is crucial to its performance and quality.

[0003] Existing bulletproof tires generally use a torus with an I-shaped steel cross section as a support body. In order to prevent the tire from falling off when the pneumatic tire is hit by a bullet and penetrated, the existing technology usually widens the lower wing plate of the I-shaped steel so that the two sides of the lower wing plate of the I-shaped steel are pressed against the inner side of the toe of the pneumatic tire, preventing the tire bead from sliding toward the center line of the rim, thereby ensuring that the tire does not fall off the rim and that the vehicle can still drive normally when the pneumatic tire is hit by a bullet and penetrated. However, the support body of the existing technology increases the weight of the support body due to the widening of the lower wing plate of the I-shaped steel, resulting in material waste. In addition, the lower wing plate of the I-shaped steel in the existing technology contacts the inner side of the rim, and the bottom of the lower wing plate is provided with longitudinal and transverse exhaust grooves to speed up the inflation speed. When the valve position is changed, it is necessary to change the support body forming mold or adjust the machining process, which reduces the versatility of the support body. When a tire deflates, the majority of the load is borne by the I-rail steel web. The lower flange of the I-rail steel forms a rigid contact with the rim. To avoid stress concentration that could lead to rim cracks, damage, or failure, the rim thickness must be increased. This increased rim thickness also increases rim weight. Existing technologies often use a three- or four-petal structure, where the joint weight accounts for approximately 20% to 30% of the total support weight, resulting in uneven circumferential mass. Therefore, existing technologies still have shortcomings and require further improvement. Summary of the Invention

[0004] The present invention aims to provide a gantry-type support body for a bulletproof tire, which can reduce the loss of driving force of the vehicle, avoid interference between the valve stem and the support body, avoid stress concentration leading to rim cracks and damage or failure, and make the mass distribution of the support body more uniform, thereby overcoming the shortcomings of the prior art.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] The present invention provides a gantry-type support body for a bulletproof tire, wherein the support body is a circular body formed by a group of A fan-shaped support units and a group of B fan-shaped support units arranged at intervals; the A fan-shaped support units and the B fan-shaped support units each include a top plate; both ends of the top surface of the top plate of the A fan-shaped support unit are provided with positioning grooves, and both ends of the top surface of the top plate of the B fan-shaped support unit are provided with positioning protrusions; a group of connecting ears are provided on the bottom surfaces of both ends of the top plate, and the connecting ears are provided with connecting holes; side wing plates inclined outward are provided on both sides of the top plate; ventilation holes are distributed on the side wing plates; the A fan-shaped support unit and the B fan-shaped support unit are connected to form a circular support body by bolts.

[0007] In the aforementioned gantry-type support body for the bulletproof tire, ventilation holes are distributed on the side wing plates.

[0008] In the aforementioned gantry-type support body for the bulletproof tire, the fan-shaped support unit A and the fan-shaped support unit B are both formed of lightweight metal, non-metal or composite materials.

[0009] Due to the adoption of the above technical solution, compared to existing technologies, the present invention utilizes a gantry-style support structure, effectively reducing vehicle driving force loss, preventing interference between the valve stem and the support, and avoiding stress concentration that can lead to rim cracks, damage, or failure. Furthermore, the support weight is more evenly distributed. This invention features minimal driving force loss, uniform mass, light weight, rim protection, a simple structure, and easy installation. It can be used effectively in vehicles requiring bulletproof and air leak protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the present invention;

[0011] Figure 2 It is a structural schematic diagram of the fan-shaped support unit A of the present invention;

[0012] Figure 3 It is a structural schematic diagram of the fan-shaped support unit B of the present invention;

[0013] Figure 4 is a schematic diagram of the support body of the present invention in a pneumatic tire;

[0014] Figure 5 yes Figure 3 Schematic cross-section of .

[0015] The markings in the figure are as follows: 1-support body, 2-fan-shaped support unit A, 3-top plate, 4-positioning groove, 5-positioning boss, 6-connecting ear, 7-connecting hole, 8-side wing plate, 9-vent, 10-bolt, 11-pneumatic tire, 12-pneumatic tire toe, 13-rim centerline, 14-fan-shaped support unit B. DETAILED DESCRIPTION

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0017] A gantry type support body for a bulletproof tire of the present invention, such as Figures 1 to 5 As shown, the support body 1 is a torus body composed of a group of A fan-shaped support units 2 and a group of B fan-shaped support units 14 arranged at intervals; the A fan-shaped support units 2 and the B fan-shaped support units 14 each include a top plate 3; the A fan-shaped support unit 2 is as shown in FIG. Figure 2 As shown, both ends of the top surface of the top plate 3 are provided with positioning grooves 4, and the fan-shaped support unit 14 is as shown in FIG. Figure 3 As shown, the top plate 3 has positioning bosses 5 at both ends of its top surface; a pair of connecting ears 6 are provided on the bottom surfaces of both ends of the top plate 3, each with a connection hole 7. Outwardly inclined side panels 8 are provided on either side of the top plate 3; each side panel 8 is provided with ventilation holes 9. The A-shaped support unit 2 and the B-shaped support unit 14 are connected by bolts 10 to form the annular support body 1. Ventilation holes are distributed on the side panels 8. Both the A-shaped support unit 2 and the B-shaped support unit 14 are formed of lightweight metal, non-metal, or composite materials. Example

[0018] like Figure 4 and Figure 5 As shown, the gantry support body for the bulletproof tire of the present invention is as shown in FIG. Figure 4 As shown, it is arranged in the pneumatic tire 11. When the support body 1 is placed, Figure 5 As shown, the bottom ends of the side wing plates 8 on both sides of the support body 1 are pressed against the inner sides of the toe 12 of the pneumatic tire to limit the toe 12 of the pneumatic tire from sliding toward the center line 13 of the rim.

[0019] The support body 1 can be formed from lightweight metal, non-metal, or composite materials. All edges of the support body 1 are rounded, which reduces stress concentration within the support body. Furthermore, when the pneumatic tire is struck, it is primarily supported by the top plate 3 of the support body 1, and the rounded corners of the top plate 3 prevent the tire from being crushed. The vents 9 on the side panels 8 on either side of the top plate 3 are evenly distributed radially, minimizing the weight of the support body 1 while ensuring support strength, thereby reducing the engine's driving force on the tire. The inner side of the support points on the bottom of the side panels 8 on either side of the top plate 3 of the present invention are >40 mm apart, away from the rim centerline 13, preventing interference with the air valve and facilitating installation. The air vents 9 on the side panels 8 on either side of the top plate 3 create an internal space significantly larger than the exhaust slots of conventional I-shaped supports. Gas enters the internal space of the support body from the air valve and then passes through the vents 9, inflating the tire. The inflation and deflation speeds of the present invention approach those of bulletproof tires without a support body.

[0020] When the pneumatic tire is not deflated, the support body of the present invention contacts the inner side of the pneumatic tire toe and the inner surface of the rim through the bottom of the side wing plates 8 on both sides, and rotates with the rim. After the tire is deflated, the load is transmitted through the tire crown to the top plate 3 at the top of the support body, and then from the top plate 3 to the bottom of the side wing plates 8 through the side wing plates 8 on both sides. Part of the lateral load is borne by the tire bead, and part of the vertical load is borne by the rim. This has a significant stress dispersion effect, which can reduce the incidence of rim cracks, damage, or failure. After the tire is deflated, the load is transmitted through the tire crown to the top plate 3 of the support body 1, and then from the top plate 3 to the bottom of the side wing plates 8 through the side wing plates 8 on both sides. The bottom ends of the side wing plates 8 slide toward the centerline of the rim, pressing the inner area of ​​the pneumatic tire toe and preventing the tire bead from sliding toward the centerline of the rim. The support body of the present invention reduces the driving force loss of the vehicle after deflation compared to traditional I-shaped support bodies.

Claims

1. A gantry-type support body for a bulletproof tire, characterized by: The support body (1) is a circular body composed of a group of A fan-shaped support units (2) and a group of B fan-shaped support units (14) arranged at intervals; the A fan-shaped support unit (2) and the B fan-shaped support unit (14) both include a top plate (3); both ends of the top surface of the top plate (3) of the A fan-shaped support unit (2) are provided with positioning grooves (4), and both ends of the top surface of the top plate (3) of the B fan-shaped support unit (14) are provided with positioning protrusions (5); a group of connecting ears (6) are provided on the bottom surfaces of both ends of the top plate (3), and the connecting ears (6) are provided with connecting holes (7); side wing plates (8) inclined outward are provided on both sides of the top plate (3); ventilation holes (9) are distributed on the side wing plates (8); the A fan-shaped support unit (2) and the B fan-shaped support unit (14) are connected to form a circular ring-shaped support body (1) via bolts (10); The side panels (8) are provided with vent holes (9); The fan-shaped support unit A (2) and the fan-shaped support unit B (14) are both formed of lightweight metal, non-metal or composite materials; All edges of the support body (1) are arc-shaped transitions; the vents (9) on the side wing plates (8) on both sides of the top plate (3) are evenly distributed radially; the inner distance between the two sides of the support points on the bottom of the two side wing plates (8) is >40 mm, away from the center line of the rim (13); Gas enters the internal space of the support body from the valve nozzle through the vent (9) to achieve tire inflation; When the pneumatic tire is not deflated, the support body contacts the inner side of the pneumatic tire toe and the inner surface of the rim through the bottom of the side wing plates (8) on both sides, and rotates together with the rim; after the tire is deflated, the load is transmitted to the top plate (3) on the top of the support body (1) through the tire crown, and then transmitted from the top plate (3) to the bottom end of the side wing plates (8) through the side wing plates (8) on both sides. Part of the lateral load is borne by the tire bead, and part of the vertical load is borne by the rim, so that the stress is dispersed.

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