Run-flat device for engineering tires

Abstract

The present invention discloses an engineering tire run-flat device, belonging to the technical field of engineering tires. The technical scheme is as follows: it comprises a plurality of support components, which are connected into a circle through elastic connectors and are sleeved on the outer circumference of the rim; the support components comprise a bottom plate, one end of which is provided with a protrusion; a support plate is hinged on the protrusion, a matching electromagnetic lock is provided between the support plate and the bottom plate, and a first spring is fixed between the support plate and the bottom plate; a first pressure sensor, a second pressure sensor, a battery and a numerical control module group are provided inside the bottom plate, the electromagnetic lock, the first pressure sensor and the second pressure sensor are respectively connected to the battery wires, and the electromagnetic lock, the first pressure sensor and the second pressure sensor are also respectively connected to the numerical control module group wires. When the tire of the present invention is leaked or blown, it can still travel a certain distance normally to reach the maintenance area, which not only ensures the safety of personnel and vehicles, but also does not affect the overall order.

Description

Technical Field

[0001] The invention relates to the technical field of engineering tires, and in particular to a run-flat device for an engineering tire. Background Art

[0002] Engineering tires are large in size and are used in harsh conditions. They often leak or even blow out due to accidental damage or production defects. Once this happens, the vehicle cannot continue to operate (especially in underground environments), posing a huge safety hazard to drivers and site workers. The order of vehicles on the working floor is affected, downtime increases, and economic benefits decrease. How to allow leaking or blown tires to travel a certain distance normally and reach the maintenance area, while ensuring the safety of personnel and vehicles and not affecting the overall order, is an issue that needs to be solved urgently. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an engineering tire run-flat device, which can still travel a certain distance normally to reach the maintenance area when the tire is leaking or bursting, thereby ensuring the safety of personnel and vehicles without affecting the overall order and having high safety.

[0004] The technical solution of the present invention is:

[0005] The engineering tire run-flat device comprises a plurality of supporting components, which are connected into a circle by elastic connectors and sleeved on the outer circumference of the wheel rim; the supporting components comprise a bottom plate, one end of which is provided with a protrusion; a supporting plate is hinged on the protrusion, a matching electromagnetic lock is provided between the supporting plate and the bottom plate, and a first spring is fixed between the supporting plate and the bottom plate; a first pressure sensor, a second pressure sensor, a battery and a numerical control module group are provided inside the bottom plate, the electromagnetic lock, the first pressure sensor and the second pressure sensor are respectively connected to the battery wires, and the electromagnetic lock, the first pressure sensor and the second pressure sensor are also respectively connected to the numerical control module group wires; when the supporting plate is pressed on the bottom plate, the electromagnetic lock is in a locked state and the first spring is in a compressed state; a supporting plate clamping mechanism is also provided on the bottom plate.

[0006] Preferably, a rotating shaft is provided at the hinged end of the support plate, and a rotating shaft sleeve is provided at a position corresponding to the rotating shaft on the protrusion, and the rotating shaft sleeve is sleeved on the rotating shaft; a groove is provided on the protrusion, and the support plate clamping mechanism includes a plurality of positioning pins, one end of the positioning pin is fixedly provided with a second spring, and the other end is against the rotating shaft, the other end of the second spring is fixed in the groove and the second spring is in a compressed state; a through hole is provided at a position of the rotating shaft corresponding to the positioning pin, and when the support plate is in a locked state, the positioning pin cannot pass through the through hole; when the rotating shaft rotates, the positioning pin passes through the through hole under the action of the second spring.

[0007] Preferably, the elastic connecting member adopts a third spring, and hooks are respectively arranged on both sides of one end of the bottom plate with a protrusion, and the two ends of the third spring are respectively hung on the hooks of two adjacent supporting components.

[0008] Preferably, the base plate and the support plate are both made of aluminum alloy.

[0009] Compared with the prior art, the present invention has the following beneficial effects: after using the device of the present invention, when a tire is leaking or bursting, the vehicle can still travel a certain distance to the maintenance area normally, which not only ensures the safety of personnel and vehicles, but also does not affect the overall order, and has high safety. It is easy to install and has stable performance, which has a great positive significance for the operating efficiency and safe production of industrial and mining enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the support component of the present invention in a locked state.

[0011] Figure 2 It is a structural schematic diagram of the support plate of the support component of the present invention in a pop-up state.

[0012] Figure 3 It is a schematic structural diagram of the positioning pin of the present invention after it pops out.

[0013] Figure 4 It is a schematic diagram of the use state of the device of the present invention when it is sleeved on the rim.

[0014] In the figure, 1-support component, 2-bottom plate, 3-protrusion, 4-support plate, 5-rotating shaft, 6-rotating shaft sleeve, 7-groove, 8-locating pin, 9-second spring, 10-third spring, 11-rim. DETAILED DESCRIPTION

[0015] Example 1

[0016] like Figure 1-4As shown, this embodiment provides an engineering tire run-flat device, including a plurality of support components 1, which are connected into a circle by elastic connectors and sleeved on the outer circumference of the rim 11; the support component 1 includes an aluminum alloy bottom plate 2 and a support plate 4, one end of the bottom plate 2 is provided with a protrusion 3; a rotating shaft 5 is provided at one end of the support plate 4 corresponding to the protrusion 3, and a rotating shaft sleeve 6 is provided at a position corresponding to the rotating shaft 5 on the protrusion 3, and the rotating shaft sleeve 6 is sleeved on the rotating shaft 5, so that the support plate 4 is hinged on the protrusion 3; between the support plate 4 and the bottom plate 2 A matching electromagnetic lock is provided, and a first spring is fixed between the support plate 4 and the bottom plate 2; a first pressure sensor, a second pressure sensor, a battery and a numerical control module group are provided inside the bottom plate 2, and the electromagnetic lock, the first pressure sensor and the second pressure sensor are respectively connected to the battery wires, and the electromagnetic lock, the first pressure sensor and the second pressure sensor are also respectively connected to the numerical control module group wires; when the support plate 4 is pressed on the bottom plate 2, the electromagnetic lock is in a locked state and the first spring is in a compressed state; a support plate 4 locking mechanism is also provided on the bottom plate 2. The electromagnetic lock can adopt an existing electromagnetic lock structure, and its principle is to supply power to the coil, and the coil will generate magnetic force after generating current, and absorb the matching magnet, thereby playing the role of a lock, and its specific structure will not be repeated here.

[0017] The protrusion 3 is provided with a groove 7, and the locking mechanism of the support plate 4 includes a plurality of positioning pins 8. A second spring 9 is fixedly provided at one end of the positioning pin 8, and the other end abuts against the rotating shaft 5. The other end of the second spring 9 is fixed in the groove 7 and the second spring 9 is in a compressed state; a through hole is provided at a position of the rotating shaft 5 corresponding to the positioning pin 8, and when the support plate 4 is in a locked state, the positioning pin 8 cannot pass through the through hole; when the rotating shaft 5 rotates, the positioning pin 8 passes through the through hole under the action of the second spring 9.

[0018] Working principle:

[0019] The number of supporting components 1 is selected appropriately according to the size of the rim 11, and they are connected into a circle with elastic connectors and then sleeved on the rim 11, so that the entire device is tightly clamped on the rim 11 and located in the cavity between the rim 11 and the tire (tubeless).

[0020] Then, the maximum threshold of the feedback pressure value of the first pressure sensor and the minimum threshold of the feedback pressure value of the second pressure sensor are set by the numerical control module group. After the device is tightly clamped on the rim 11, the tire is assembled on the rim 11. The normal state of the magnetic lock is that the magnetic force adsorption makes the support plate 4 cover the bottom plate 2, so that the first spring is in a compressed state.

[0021] The tire is inflated. When the pressure value in the tire reaches the highest threshold of the first pressure sensor, the numerical control module group receives the signal of the first pressure sensor and then controls the second pressure sensor to be turned on. When the pressure value detected by the second pressure sensor is higher than its lowest threshold, it indicates that the pressure in the tire is normal and no air leakage or tire blowout occurs; otherwise, it indicates that the tire has air leakage or tire blowout. At this time, the numerical control module group receives the signal of the first pressure sensor and then stops supplying power to the electromagnetic lock, so that the adsorption force of the electromagnetic lock on the bottom plate 2 and the support plate 4 disappears, and the support plate 4 bounces up under the elastic force of the first spring. At the same time, the rotating shaft 5 at the hinged end of the support plate 4 rotates, causing the perforation on the rotating shaft 5 to rotate accordingly. When the perforation rotates to a certain angle, the positioning pin 8 compressed in the groove 7 by the rotating shaft 5 and the protrusion 3 can pass through the perforation under the elastic force of the second spring 9 and extend out of the rotating shaft 5 and under the support plate 4 to resist the support plate 4, so that the support plate 4 cannot be stressed and returns to the state of covering the bottom plate 2.

[0022] Generally, a deflated tire will continue to sink too much due to insufficient air pressure, causing the vehicle body to lose control or crush the tire and rim 11, resulting in more serious consequences. However, after the device of this embodiment is installed on the rim 11, the support plate 4 bounces up, which can provide good support for the tire, and the tire sinking amount does not exceed 20% of the normal value, the vehicle body will not lose control, and the accident vehicle can be smoothly driven to the maintenance area for inspection.

[0023] Example 2

[0024] On the basis of Example 1, the elastic connecting member adopts a third spring 10, and hooks are respectively arranged on both sides of one end of the protrusion 3 of the bottom plate 2, and the two ends of the third spring 10 are respectively hung on the hooks of two adjacent supporting components 1.

[0025] When in use, several support components 1 are first connected into a line by the third spring 10, and then put on the outer circumference of the rim 11, and finally the first two support components 1 are connected by the third spring 10. Since each support component 1 is independent, the number of appropriate support components 1 can be selected according to the actual needs such as the size of the rim 11, and a damaged support component 1 can be replaced separately, which is convenient to operate.

[0026] Example 3

[0027] On the basis of Embodiment 1, an operation display screen is provided on the bottom plate 2 to adjust the highest threshold value of the first pressure sensor and the lowest threshold value of the second pressure sensor to adapt to different tire pressures.

[0028] Although the present invention has been described in detail by referring to the accompanying drawings and in combination with the preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, a person of ordinary skill in the art may make various equivalent modifications or substitutions to the embodiments of the present invention, and these modifications or substitutions shall be within the scope of the present invention. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, and all of these shall be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A run-flat device for an engineering tire, characterized in that: It comprises a plurality of supporting components (1), wherein the plurality of supporting components (1) are connected to form a circle via an elastic connecting piece and are sleeved on the outer circumference of a wheel rim (11); The support component (1) comprises a bottom plate (2), one end of the bottom plate (2) being provided with a protrusion (3); a support plate (4) is hingedly connected to the protrusion (3), a matching electromagnetic lock is provided between the support plate (4) and the bottom plate (2), and a first spring is fixedly provided between the support plate (4) and the bottom plate (2); The base plate (2) is provided with a first pressure sensor, a second pressure sensor, a battery and a numerical control module group. The electromagnetic lock, the first pressure sensor and the second pressure sensor are respectively connected to the battery wires. The electromagnetic lock, the first pressure sensor and the second pressure sensor are also respectively connected to the numerical control module group wires. When the support plate (4) is pressed on the base plate (2), the electromagnetic lock is in a locked state and the first spring is in a compressed state. The bottom plate (2) is also provided with a support plate (4) locking mechanism; A rotating shaft (5) is provided at the hinged end of the support plate (4), and a rotating shaft sleeve (6) is provided at a position on the protrusion (3) corresponding to the rotating shaft (5), and the rotating shaft sleeve (6) is sleeved on the rotating shaft (5); The protrusion (3) is provided with a groove (7), the support plate (4) locking mechanism comprises a plurality of positioning pins (8), one end of the positioning pin (8) is fixedly provided with a second spring (9), the other end of the positioning pin (8) abuts against the rotating shaft (5), the other end of the second spring (9) is fixedly provided in the groove (7) and the second spring (9) is in a compressed state; The rotating shaft (5) is provided with a through hole at a position corresponding to the positioning pin (8); when the support plate (4) is in a locked state, the positioning pin (8) cannot pass through the through hole; when the rotating shaft (5) rotates, the positioning pin (8) passes through the through hole under the action of the second spring (9); The bottom plate (2) and the support plate (4) are both made of aluminum alloy.

2. The run-flat device for an engineering tire as claimed in claim 1, characterized in that: The elastic connecting member adopts a third spring (10), and hooks are respectively arranged on both sides of one end of the protrusion (3) provided on the bottom plate (2), and the two ends of the third spring (10) are respectively hung on the hooks of two adjacent supporting components (1).

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