Combined supporting device in tire

Abstract

The invention relates to a tire inner combined supporting device which is characterized in that the tire inner combined supporting device comprises an inner supporting body and an outer supporting body installed on the inner supporting body, the inner supporting body and the outer supporting body are both in a circular ring shape, the outer supporting body is formed by connecting and surrounding two or more supporting arc sections, and the outer supporting body is arranged on the outer side of the inner supporting body; a circle of boss is arranged on the outer wall face of the inner supporting body, a groove is formed in the inner wall of the supporting arc section, the boss of the inner supporting body is arranged in the groove of the supporting arc section, and lubricating oil is arranged between the inner supporting body and the supporting arc section. The inner supporting body and the outer supporting body are connected in a relative rotating mode, in the using process, the inner supporting body and a hub rotate together, the outer supporting body and the inner supporting body do not rotate together at the same speed but can slide relatively, and the outer supporting body and other tires without tire burst can move at the same speed; heating caused by friction force and friction between the outer supporting body and the ground is reduced, abrasion is small, and the endurance life is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of automobile wheels, in particular to a combined supporting device in a tire. Background Art

[0002] Special vehicles usually travel on various complex road conditions or non-road conditions, and the tires are easily punctured and blowouts occur. In order to prevent the vehicle from losing control or even rolling over after a tire blowout, and to enable the vehicle to continue driving after the tire is damaged, a support body is usually set on the inside of the tire. The support body is installed on the wheel hub steel ring, and the wheel diameter is smaller than the outer diameter of the tire. When the tire is running normally, the tire is in contact with the ground, and the support body rotates with the wheel, but it is suspended and does not contact the ground. When a tire blowout occurs, the tire is damaged and deflated, and the support body contacts the ground and replaces the damaged tire to drive. The support body of existing special vehicles is fixed on the wheel hub during use. After a tire blowout, the diameter of the support body is smaller than the tire, so the linear speed is smaller than the tire at the same speed, but it must rotate with the wheel hub and move with other tires that have not blown out. Therefore, the support body has severe friction with the ground, and will soon heat up and deform, and the endurance life is short. Summary of the invention

[0003] In order to solve the above problems, the present invention proposes a combined support device in a tire to reduce the friction between the support device and the ground and improve the endurance life.

[0004] In order to achieve the above-mentioned purpose, the present invention provides a combined support device inside a tire, characterized in that it includes an inner support body and an outer support body installed on the inner support body, the inner support body and the outer support body are both in the shape of a circular ring, the outer support body is formed by connecting and enclosing two or more support arc segments, the outer support body is on the outer side of the inner support body, a circle of bosses is provided on the outer wall surface of the inner support body, a groove is provided on the inner wall of the support arc segment, the boss of the inner support body is arranged in the groove of the support arc segment, and lubricating oil is provided between the inner support body and the support arc segment.

[0005] The inner support and the outer support of the present invention are connected to each other in a relatively rotatable manner. When in use, the inner support is fixed on the wheel hub and rotates together with the wheel hub, and the outer support does not rotate together with the inner support at the same speed, but can slide relatively. The outer support can move at the same speed as other tires that have not burst, and the friction between the outer support and the ground and the heat caused by friction are reduced, the wear is small, and the endurance life is extended. The friction and the heat caused by friction are also reduced by lubrication between the inner support and the outer support. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 is a three-dimensional diagram of the combined support device in the tire; Figure 2It is a front view of the combined support device in the tire; Figure 3 It is a right side view of the combined support device in the tire; Figure 4 for Figure 2 AA cross-section diagram; Figure 5 is a three-dimensional diagram of the inner support body; Figure 6 is a right side view of the inner support body; Figure 7 for Figure 6 B is a partial enlarged view of; Figure 8 Schematic diagram of the structure of the supporting arc segment.

[0007] The present invention will be further described in detail below in conjunction with the accompanying drawings. DETAILED DESCRIPTION

[0008] See also Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7 The tire internal combined support device includes an inner support body 1, which is generally a non-closed annular ring with a broken gap 11 to facilitate installation on the wheel hub of a special vehicle. A circle of outwardly protruding and annular bosses 12 are provided in the middle of the outer wall surface of the inner support body 1. The outer wall surface of the inner support body 1 and the bosses 12 are both provided with a plurality of pits 13 to facilitate storage of lubricants. The inner support body 1 is made of engineering plastics or aluminum alloy, and the engineering plastics include but are not limited to polyamide resin (PA) and polybutylene terephthalate (PBT).

[0009] See also Figure 1-4 and Figure 8 , the outer support body is installed on the inner support body 1 and is on the outer side of the inner support body 1. The outer support body is in the shape of a circular ring, which is formed by connecting and enclosing three support arc segments 2. The number of support arc segments 2 can be two or more. The material of the support arc segment 2 is preferably polyamide resin (PA) or polybutylene terephthalate (PBT). The inner wall of the support arc segment 2 is provided with an inwardly concave, arc-shaped groove 21, the shape of the groove 21 is adapted to the boss 12 on the inner support body 1, the width of the groove 21 is slightly larger than the width of the boss 12, and after the support arc segment 2 is installed on the inner support body 1, the boss 12 is placed in the groove 21. Lubricating oil is provided between the inner support body 1 and the support arc segment 2, and the lubricating oil is applied to the outer wall surface of the inner support body 1 and the boss 12, and some of the lubricating oil enters the pit 13. The pit for storing lubricant can also be set on the inner wall of the support arc segment 2 and the groove 21. The inner support and the outer support form a track, and lubricating oil is applied on and around the track, so that the inner support and the outer support can slide relative to each other. Figure 4 A plurality of placement grooves are provided at the bottom of the groove 21, a spring 3 is provided at the bottom of the placement groove, a ball 4 is placed on the spring 3, the lower part of the ball 4 is in the placement groove and pressed on the spring 3, the upper part protrudes outside the placement groove and is in the groove 21, and the boss 12 of the inner support body 1 is pressed on the ball 4.

[0010] See also Figure 1 , 2 and Figure 8 , one end of one of the supporting arc segments 2 is provided with a connecting groove 22 and a threaded hole, the connecting groove 22 is recessed inward from the end surface of the supporting arc segment 2, the threaded hole is recessed inward from the side wall of the supporting arc segment 2, and the connecting groove 22 is connected with the threaded hole. The other end of the supporting arc segment 2 is provided with a connecting groove 23 and a connecting hole 24, the connecting groove 23 is recessed inward from the end surface of the supporting arc segment 2, the connecting hole 24 is recessed inward from the side wall of the supporting arc segment 2, and the connecting groove 23 is connected with the connecting hole 24. Except for the above-mentioned one supporting arc segment 2, the other supporting arc segments 2 have the same structure. The supporting arc segments 2 with the same structure are both provided with connecting grooves 22 and threaded holes at both ends, the connecting grooves 22 are recessed inward from the end surface of the supporting arc segment 2, the threaded holes are recessed inward from the side wall of the supporting arc segment 2, and the connecting grooves 22 arranged at the same end of the supporting arc segment 2 are connected with the threaded holes. The connecting grooves 22 and threaded holes on each supporting arc segment 2 have the same structure. The supporting arc segments 2 are connected together by a fixed connecting rod 6 or an adjustable connecting rod 5. Both ends of the fixed connecting rod 6 are provided with a rod threaded hole 61, and the rod threaded holes 61 at both ends of the fixed connecting rod 6 are respectively inserted into the connecting grooves 22 of two adjacent supporting arc segments, and then the screw 8 is inserted into the threaded hole of the supporting arc segment and the rod threaded hole 61 of the fixed connecting rod to connect one end of the fixed connecting rod and one end of the supporting arc segment. Both ends of the fixed connecting rod 6 are connected to two adjacent supporting arc segments by screws to connect each end of the two supporting arc segments together. One end of the adjustable connecting rod 5 is provided with a rod threaded hole 2 51, and the other end is provided with an external thread. The rod threaded hole 2 51 of the adjustable connecting rod 5 is inserted into the connecting groove 22 of a supporting arc segment, and the screw 8 is inserted into the threaded hole of the supporting arc segment and the rod threaded hole 2 51 of the adjustable connecting rod 5 to connect one end of the adjustable connecting rod 5 and one end of the supporting arc segment. A nut 7 is provided in the connecting hole 24 of the supporting arc segment 2, and one end of the adjustable connecting rod 5 with an external thread is inserted into the connecting groove 23 of the supporting arc segment and matched with the nut 7. The two ends of the adjustable connecting rod 5 are connected to the two adjacent supporting arc segments by screws and nuts respectively, and the ends of the two supporting arc segments are connected together, and the connection method is adjustable. By tightening the nut 7, the tightness of the connection between the two supporting arc segments can be adjusted, thereby adjusting the tightness of the outer support body on the inner support body 1, thereby making the outer support body and the inner support body 1 better matched, and the installation is stable and convenient. The two adjacent supporting arc segments 2 are connected together by a fixed connecting rod 6 or an adjustable connecting rod 5 to form a circular ring.

[0011] During installation, first fix the inner support body 1 on the wheel hub of the special vehicle, then apply lubricating oil on the outer wall surface of the inner support body 1, then install the support arc segment 2 on the inner support body 1, connect and enclose the support arc segment 2, and finally install the tire on the outer side of the outer support body. During the use of the wheel, if the tire bursts, the combined support device inside the tire of the present invention is used instead of the tire. During use, the inner support body is fixed on the wheel hub and rotates with the wheel hub. The outer support body does not rotate at the same speed as the inner support body, but can slide relatively. The outer support body can move at the same speed as other tires that have not burst. The friction between the outer support body and the ground and the heat caused by friction are reduced, the wear is small, and the endurance life is extended. The friction and heat caused by friction are also reduced by lubrication between the inner support body and the outer support body.

Claims

1. A combined support device in a tire, characterized in that: The invention comprises an inner support body (1) and an outer support body mounted on the inner support body, wherein the inner support body and the outer support body are both annular, the outer support body is formed by connecting and enclosing two or more support arc segments (2), the outer support body is on the outer side of the inner support body, a circle of bosses (12) is provided on the outer wall surface of the inner support body, a groove (21) is provided on the inner wall of the support arc segment (2), the bosses (12) of the inner support body are arranged in the grooves (21) of the support arc segment, and lubricating oil is provided between the inner support body and the support arc segment.

2. The tire in-tire combined support device according to claim 1, characterized in that: A placement groove is provided at the bottom of the groove (21) of the supporting circular arc segment (2), a ball (4) is provided in the placement groove, the upper part of the ball protrudes outside the placement groove and is in the groove, and the boss (12) of the inner support body is pressed on the ball.

3. The tire in-tire combined support device according to claim 2, characterized in that: A spring (3) is provided at the bottom of the placement groove, and the ball bearing (4) is pressed on the spring.

4. The tire in-tire combined support device according to claim 3, characterized in that: The outer wall and the boss of the inner support body are provided with a plurality of recesses (13).

5. The tire in-tire combined support device according to any one of claims 1 to 4, characterized in that: One end of one of the supporting arc segments (2) is provided with a connected connecting groove (22) and a threaded hole, and the other end is provided with a connected connecting groove (23) and a connecting hole (24). Both ends of the remaining supporting arc segments are provided with connected connecting grooves (22) and threaded holes. The connecting grooves (22) and the connecting grooves (23) are both recessed inwardly from the end surface of the supporting arc segment (2). The threaded holes and the connecting holes (24) are both recessed inwardly from the side wall of the supporting arc segment (2). Both ends of the fixed connecting rod 6 are provided with rod threaded holes (61). The rod threaded holes (61) at both ends of the fixed connecting rod are respectively inserted into two adjacent supporting arc segments. The screw (8) is inserted into the threaded hole of the supporting arc segment and the rod threaded hole (61) of the fixed connecting rod. One end of the adjustable connecting rod (5) is provided with a second rod threaded hole (51) and the other end is provided with an external thread. The second rod threaded hole (51) is inserted into the connecting groove (22) of the supporting arc segment. The screw (8) is inserted into the threaded hole of the supporting arc segment and the second rod threaded hole (51) of the adjustable connecting rod (5). A nut (7) is provided in the connecting hole (24) of the supporting arc segment. One end of the adjustable connecting rod (5) with the external thread is inserted into the connecting groove (23) of the supporting arc segment and cooperates with the nut (7).

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