An intelligent tire automatic pressure maintenance system and vehicle

Abstract

This utility model discloses an intelligent automatic tire pressure maintaining system and vehicle, relating to the field of vehicle tire pressure detection and control. The intelligent automatic tire pressure maintaining system includes a wheel-side module and a power supply module for supplying power to the wheel-side module. The wheel-side module is coaxially mounted on one side of each tire and rotates synchronously with the tire. It includes an air pump for communicating with the tire valve and a control component for acquiring the real-time tire pressure of each tire and controlling the air pump to perform corresponding inflation actions on the corresponding tire based on the difference between the real-time tire pressure and a pre-set pressure maintaining threshold. The power supply module includes a conductive slip ring coaxially mounted with the tire. The conductive slip ring includes a fixed conductive outer ring and a conductive inner ring that rotates synchronously with the wheel-side module. This application has a simple structure, achieves automated independent tire pressure maintaining, and the entire pressure maintaining process requires no manual intervention.

Description

Technical Field

[0001] This utility model relates to the field of vehicle tire pressure detection and control, specifically to an intelligent automatic tire pressure maintenance system and vehicle. Background Technology

[0002] Currently, automatic tire pressure maintenance for gantry cranes primarily relies on a central tire inflation / deflation system. This system consists of a central air compressor, air tank, control unit, pressure sensors, solenoid valves, and a crucial rotary seal joint. Sensors monitor tire pressure, and the control unit compares this pressure with a set value, then instructs the corresponding valve to open for inflation or deflation, maintaining precise tire pressure. Its advantages include high automation, significantly extended tire life, and improved safety and energy efficiency. However, the system is complex and costly. Another option is to equip each tire with an independent small electric air pump and sensor. This approach is relatively simple, eliminates the need for a central air circuit and rotary seal, and may be less expensive. However, it has a slower inflation speed, typically cannot actively deflate, and each wheel end has a potential failure point. Its reliability and applicability on large, heavy-duty cranes are not as mature as a central tire inflation / deflation system. Furthermore, a pure tire pressure monitoring system only provides an early warning function, relying on manual intervention for pressure maintenance, and fails to achieve the core value of automatic adjustment. Utility Model Content

[0003] This application provides an intelligent automatic tire pressure maintenance system and vehicle, which can solve the technical problems of existing pressure maintenance methods that rely on a central tire inflation and deflation system, which is complex and costly, and the method of equipping each tire with an independent small electric air pump and sensor, which is simple in structure but only provides a warning function and relies on manual intervention to maintain pressure, and cannot achieve automatic adjustment.

[0004] In a first aspect, embodiments of this application provide an intelligent automatic tire pressure maintenance system, comprising: The wheel-side module is coaxially mounted on one side of each tire and rotates synchronously with the tire. The wheel-side module includes an air pump for communicating with the tire valve and a control component for acquiring the real-time tire pressure of each tire and controlling the air pump to perform corresponding inflation actions on the corresponding tire based on the difference between the real-time tire pressure and a pre-set pressure holding threshold. A power supply module for supplying power to the wheel-side module, the power supply module including a conductive slip ring coaxially arranged with the tire, the conductive slip ring including a fixed conductive outer ring and a conductive inner ring that rotates synchronously with the wheel-side module.

[0005] In conjunction with the first aspect, in one embodiment, the wheel-side module includes a central clamp, and the outer periphery of the central clamp is radially symmetrically provided with brackets, one bracket being detachably connected to the air pump, and the other bracket being detachably connected to the control component.

[0006] In one embodiment, the bracket includes two opposing bent plates, the two ends of which are folded back to form connecting ears, and fastening bolts are provided on the connecting ears. The central clamp, the bottom of the air pump, and the top of the control assembly are all provided with mating parts for connecting with the connecting ears.

[0007] In one embodiment, one end face of the air pump is provided with a pump body drive power line for connection to the power supply module.

[0008] In one embodiment, the other end of the air pump is provided with a gas output pipe, and the control component includes an on / off control air passage. One end of the on / off control air passage is connected to the gas output pipe, and the other end is provided with a tire air supply pipe. The output end of the tire air supply pipe is used to communicate with the tire valve.

[0009] In one embodiment, the control component further includes a host control system and tire pressure sensors, with one tire pressure sensor corresponding to each tire, and the control component is electrically connected to the vehicle controller.

[0010] In one embodiment, the conductive outer ring includes two opposing outer ring semicircles, and one of the outer ring semicircles is provided with a brush block. The end of the brush block away from the conductive inner ring is provided with a spring. The conductive inner ring includes two opposing inner ring semicircles, and the end face of the conductive inner ring facing the conductive outer ring is provided with a copper ring for cooperating with the brush block to generate current.

[0011] In one embodiment, a plurality of bearings are provided on one end face of the conductive inner ring, the plurality of bearings are arranged along the circumference of the conductive inner ring, and the bearings protrude from the disk surface of the conductive inner ring to abut against the inner circumferential wall of the conductive outer ring.

[0012] In one embodiment, the conductive inner ring is provided with at least two power output lines, one of which is used to connect to the control component and the other is used to connect to the air pump. The conductive outer ring is provided with an input wire for connecting to the vehicle's electrical system.

[0013] Secondly, this application provides a vehicle in which each tire is equipped with the aforementioned automatic tire pressure maintaining system, and multiple sets of intelligent automatic tire pressure maintaining systems are electrically connected to the vehicle's overall controller.

[0014] The beneficial effects of the technical solutions provided in this application include: 1. By monitoring tire pressure in real time through the wheel-side module and actively controlling the air pump to perform inflation, the system completely changes the passive mode of traditional solutions that only provide warnings but do not take action. Once the tire pressure falls below the preset threshold, the system will automatically start inflating the tires without driver intervention, greatly improving convenience and safety. 2. The complex central tire inflation / deflation system with its extensive piping network has been eliminated, and a distributed design with "one tire corresponding to one independent wheel-side module" has been adopted. This not only significantly simplifies the overall vehicle layout and reduces system complexity and manufacturing costs, but also avoids the common risks of leaks and single-point failures in central systems, improving the overall reliability of the system. The system structure is simplified, the cost is lower, and the reliability is higher. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This application provides a schematic diagram of the wheel-side module structure in an intelligent automatic tire pressure maintenance system. Figure 2 A schematic diagram of the power supply module structure in an intelligent tire automatic pressure maintenance system provided in this application embodiment; Figure 3 An exploded view of the wheel-side module in an intelligent automatic tire pressure maintenance system provided in this application embodiment; Figure 4 An exploded view of the power supply module in an intelligent tire automatic pressure maintenance system provided in this application embodiment.

[0017] In the diagram: 1. Air pump; 101. Pump drive power cord; 102. Gas output pipe; 2. Control components; 201. On / off control air passage; 202. Tire air supply pipe; 3. Conductive slip ring; 301. Conductive outer ring; 3011. Outer ring semicircle; 3012. Brush block; 3013. Spring; 302. Conductive inner ring; 3021. Inner ring semicircle; 3022. Copper ring; 3023. Bearing; 4. Central clamp; 5. Bracket; 501. Bending plate; 502. Connecting ear; 503. Fastening bolt; 6. Power supply cable; 7. Input wire. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0019] Firstly, the embodiments of this application provide an intelligent automatic tire pressure maintenance system, which can solve the technical problems existing in the prior art. The existing pressure maintenance methods rely on a central tire inflation and deflation system, which is complex and costly. Although the method of equipping each tire with an independent small electric air pump and sensor is simple in structure, it only provides a warning function and relies on manual intervention to maintain pressure, and cannot achieve automatic adjustment.

[0020] The automatic tire pressure maintaining system in this application includes a wheel-side module and a power supply module. The wheel-side module is configured on one side of each tire and rotates synchronously with the tire to realize real-time tire pressure detection and perform automated dynamic pressure maintaining action on the current tire according to the tire pressure. The power supply module is used to provide power to the wheel-side module. Part of its structure also rotates synchronously with the wheel-side module and the tire, and generates electrical energy during its rotation and transmits the electrical energy to the wheel-side module to realize the automated action of the wheel-side module.

[0021] Specifically, the wheel-side module includes an air pump 1, which is electric and coaxially mounted with the tire. It is specifically fitted onto the vehicle's wheel axle, close to the tire, and connected to the tire valve. The wheel-side module also includes a control component 2, which is mainly used to realize the automatic inflation action of the air pump 1. It is the upper control unit of the air pump 1 and can continuously obtain the real-time tire pressure. The control component 2 has a pressure holding threshold set in advance. When the tire pressure is lower than the pressure holding threshold, it controls the air pump 1 to perform the inflation action. Even during vehicle operation, the wheel-side module always remains relatively stationary with respect to the tire.

[0022] Furthermore, the power supply module includes a conductive slip ring 3 coaxially mounted with the tire. The conductive slip ring 3 is also fitted onto the vehicle axle to be coaxially mounted with the tire. It is located on the side of the wheel module away from the tire. Specifically, the conductive slip ring 3 includes a fixed conductive outer ring 301 and a conductive inner ring 302 that rotates synchronously with the wheel module. The conductive outer ring 301 can be mechanically connected to any suitable position around the frame or vehicle tire to maintain fixation. The conductive inner ring 302 is fitted onto the vehicle axle and rotates synchronously with the vehicle axle, tire, and wheel module during vehicle operation to maintain relative stillness. The rotation of the conductive inner ring 302 generates current between itself and the conductive outer ring 301, which is then transmitted to the wheel module.

[0023] Furthermore, the wheel-side module includes a central clamp 4, with brackets 5 radially symmetrically arranged on the outer periphery of the central clamp 4. One bracket 5 is detachably connected to the air pump 1, and the other bracket 5 is detachably connected to the control component 2. The central clamp 4 is an open ring used to fit around the outer periphery of the vehicle wheel axle. The two ends of the opening of the central clamp 4 are folded back in a direction away from its center point and are provided with connecting bolts. The two ends of the connecting bolts pass through the two folded ends respectively, and one end of the connecting bolt is provided with an adjusting nut. By rotating the adjusting nut, the inner diameter and locking force of the central clamp 4 can be adjusted to adapt to vehicle wheel axles of different diameters on different vehicle models.

[0024] Furthermore, the bracket 5 includes two opposing bent plates 501, the two ends of which are folded back to form connecting ears 502. The connecting ears 502 are provided with fastening bolts 503. The connecting ears 502 at one end of the bent plate 501 that connects to the middle clamp 4 are configured as an arc-shaped structure to adapt to the bending posture of the outer circumferential wall of the middle clamp 4. The end of the bent plate 501 that connects to the air pump 1 or the control component 2 is configured as a flat plate. The middle clamp 4, the bottom of the air pump 1, and the top of the control component 2 are all provided with mating parts for connecting with the connecting ears 502. The mating parts are configured as bolt holes for the fastening bolts 503 to pass through or enter.

[0025] Furthermore, one end face of the air pump 1 is provided with a pump body drive power line 101 for connecting to the power supply component. The air pump 1 is a square structure in general. In actual installation scenarios, it has two end faces facing the length direction of the vehicle body, and the pump body drive power line 101 is provided on one end face.

[0026] Furthermore, the other end of the air pump 1 is provided with a gas output pipe 102. The opening and closing of the gas output path of the air pump 1 is controlled by the control component 2. Therefore, in this application, the control component 2 includes an on / off control air passage 201. The gas output pipe 102 is connected to the inlet end of the on / off control air passage 201, and the outlet end of the on / off control air passage 201 is provided with a tire air supply pipe 202 for connecting to the tire valve. In one possible embodiment, a solenoid valve is provided in the on / off control air passage 201, and the control component 2 controls the closing state of the solenoid valve and the opening degree of the valve body.

[0027] Furthermore, the control component 2 also includes a host control system and a tire pressure sensor, and multiple control components 2 are electrically connected to the vehicle controller. Each tire corresponds to an air pump 1, an on / off control air passage 201, a tire pressure sensor, and the aforementioned on / off control air passage 201. In one embodiment, the host control system is configured with a wheel-side ECU on one side of each tire, which is used to receive the value of the tire pressure sensor and control the on / off of the corresponding on / off control air passage 201. The wheel-side ECU is electrically connected to the vehicle controller and is used to realize the monitoring of various modules, data integration, storage, human-machine interaction, and remote control.

[0028] Furthermore, the conductive outer ring 301 includes two oppositely arranged outer ring semicircles 3011, and the conductive inner ring 302 includes two oppositely arranged inner ring semicircles 3021. The conductive outer ring 301 and the conductive inner ring 302 are spliced ​​together in a semicircular configuration, which facilitates assembly onto the vehicle body without removing the vehicle tires.

[0029] The conductive outer ring 301 includes two opposing outer ring semicircles 3011, one of which has a brush block 3012. A spring 3013 is located at the end of the brush block 3012 furthest from the conductive inner ring 302. The conductive inner ring 302 includes two opposing inner ring semicircles 3021. A copper ring 3022 is located on the end face of the conductive inner ring 302 facing the conductive outer ring 301, for cooperating with the brush block 3012 to generate current. The copper ring 3022 provides a smooth, wear-resistant, and highly conductive friction contact surface, typically made of graphite or a metal-graphite composite material, and is relatively soft. Under the pressure of the spring 3013, it stationarily "brushes" against the surface of the rotating copper ring 3022, thereby establishing a continuous electrical connection channel between the rotating and stationary systems, enabling the transmission of power and / or signals. The conductive slip ring 3 is a commonly used component, and its working principle will not be elaborated further here.

[0030] Furthermore, a plurality of bearings 3023 are provided on one end face of the conductive inner ring 302. The bearings 3023 are arranged along the circumference of the conductive inner ring 302, and the bearings 3023 protrude from the disk surface of the conductive inner ring 302 to abut against the inner circumferential wall of the conductive outer ring 301. The arrangement of the bearings 3023 can reduce the frictional resistance when the conductive inner ring 302 rotates along the inner wall of the conductive outer ring 301, increase the structural performance and current output stability, and at the same time, maintain a stable distance between the conductive inner ring 302 and the conductive outer ring 301.

[0031] Furthermore, the conductive inner ring 302 is provided with at least two power output lines 6. One power output line 6 is used to connect to a pre-set interface on the control component 2, and the other power output line 6 is used to connect to the pump body drive power line 101 on the air pump 1. The power source for both the air pump 1 and the control component 2 comes from the conductive slip ring 3. The conductive outer ring 301 is provided with an input wire 7 for connecting to the vehicle's electrical system. The input wire 7 connects to the vehicle's electrical system to guide the external power supply on the stationary side to the load on the rotating side. That is, it guides the current in the stationary vehicle engine to the rotating air pump 1 and the control component 2 evenly.

[0032] The pressure-maintaining system control logic in this application is as follows: When the upper control system receives the tire pressure adjustment command, it controls the tire pressure sensor to collect the real-time pressure of each tire. When the real-time tire pressure is lower than the pressure-maintaining threshold, the upper control system controls the air pump 1 to perform an inflation action. The air pump 1 operates in a cycle of 3 minutes of work followed by 3 minutes of rest, and the tire pressure is measured in real time during the operation. Inflation and deflation can be performed normally at low speeds. Simultaneously, the tire pressure of each tire can be transmitted in real time to the vehicle's cloud server for storage. The uploaded data is processed through the Internet of Things, and finally uploaded to a mini-program to display the real-time tire pressure of each tire. As an optional embodiment, the wheel-side module also includes a temperature sensor, which is also set one-to-one with the tire. It can issue an alarm when the tire temperature is too high, allowing the driver to understand the tire condition in a timely manner.

[0033] Secondly, this application embodiment also provides a vehicle, each tire of which is equipped with the above-mentioned intelligent tire automatic pressure maintaining system, and multiple sets of intelligent tire automatic pressure maintaining systems are electrically connected to the vehicle's whole vehicle controller, and the wheel-side module and conductive slip ring 3 in the intelligent tire automatic pressure maintaining system are both sleeved on the outside of the vehicle's wheel axle.

[0034] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0035] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An intelligent automatic tire pressure maintaining system, characterized in that, include: The wheel-side module is coaxially mounted on one side of each tire and rotates synchronously with the tire. The wheel-side module includes an air pump (1) for communicating with the tire valve and a control component (2) for obtaining the real-time tire pressure of each tire and controlling the air pump (1) to perform corresponding inflation actions on the corresponding tire based on the difference between the real-time tire pressure and the pre-set pressure holding threshold. A power supply module for supplying power to the wheel-side module, the power supply module including a conductive slip ring (3) coaxially arranged with the tire, the conductive slip ring (3) including a fixed conductive outer ring (301) and a conductive inner ring (302) that rotates synchronously with the wheel-side module.

2. The intelligent tire automatic pressure maintaining system as described in claim 1, characterized in that: The wheel-side module includes a central clamp (4), and the central clamp (4) is radially symmetrically provided with brackets (5) on its outer periphery. One bracket (5) is detachably connected to the air pump (1), and the other bracket (5) is detachably connected to the control component (2).

3. The intelligent tire automatic pressure maintaining system as described in claim 2, characterized in that: The bracket (5) includes two oppositely arranged bent plates (501), the two ends of the bent plates (501) are folded back to form connecting ears (502), the connecting ears (502) are provided with fastening bolts, and the middle clamp (4), the bottom of the air pump (1) and the top of the control component (2) are all provided with mating parts for connecting with the connecting ears (502).

4. The intelligent automatic tire pressure maintaining system as described in claim 1, characterized in that: One end face of the air pump (1) is provided with a pump body drive power line (101) for connection with the power supply module.

5. The intelligent automatic tire pressure maintaining system as described in claim 4, characterized in that: The air pump (1) has a gas output pipe (102) on the other end. The control component (2) includes an on / off control air passage (201). One end of the on / off control air passage (201) is connected to the gas output pipe (102), and the other end is provided with a tire air supply pipe (202). The output end of the tire air supply pipe (202) is used to communicate with the tire valve.

6. The intelligent tire automatic pressure maintaining system as described in claim 1, characterized in that: The control component (2) also includes a host control system and a tire pressure sensor. Each tire corresponds to a tire pressure sensor. The control component (2) is electrically connected to the vehicle controller.

7. The intelligent automatic tire pressure maintaining system as described in claim 1, characterized in that: The conductive outer ring (301) includes two oppositely arranged outer ring semicircles (3011), and one of the outer ring semicircles (3011) is provided with a brush block (3012). The end of the brush block (3012) away from the conductive inner ring (302) is provided with a spring (3013). The conductive inner ring (302) includes two oppositely arranged inner ring semicircles (3021). The end face of the conductive inner ring (302) facing the conductive outer ring (301) is provided with a copper ring (3022) for cooperating with the brush block (3012) to generate current.

8. The intelligent tire automatic pressure maintaining system as described in claim 7, characterized in that: The conductive inner ring (302) has a plurality of bearings (3023) on one end face. The plurality of bearings (3023) are arranged along the circumference of the conductive inner ring (302), and the bearings (3023) protrude from the disk surface of the conductive inner ring (302) to abut against the inner circumferential wall of the conductive outer ring (301).

9. The intelligent tire automatic pressure maintaining system as described in claim 8, characterized in that: The conductive inner ring (302) is provided with at least two power output lines (6), one of which is used to connect to the control component (2), and the other is used to connect to the air pump (1). The conductive outer ring (301) is provided with an input wire (7) for connecting to the vehicle's electrical system.

10. A vehicle, characterized in that, Each tire of the vehicle is equipped with an intelligent automatic tire pressure maintaining system as described in any one of claims 1 to 9, and multiple sets of intelligent automatic tire pressure maintaining systems are electrically connected to the vehicle's overall controller.

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