Hub Tire Constant Pressure Device Using Pneumatic Slip Ring
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing hub tire systems face challenges in maintaining constant air pressure, particularly during high-speed driving and high temperatures, which can lead to tire bursts due to increased pressure, and existing cooling solutions are complex, wasteful, and prone to maintenance issues.
Innovation Solution
An automatic constant pressure device for hub tire systems, featuring a valve nozzle, pneumatic slip ring, pressure relief valve, and integrated tire pressure and temperature sensors, automatically adjusts air pressure to maintain a set value between 200 kPa ± 20 kPa, using a solenoid valve and air storage tank to prevent over- or under-inflation, while also controlling temperature through pressure relief and inflation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If water spraying is used to cool the hub tire system, then temperature reduction is achieved, but water resources are wasted and the cooling system becomes complex
Solution Approach 1:
The hub tire system uses its own internal air for cooling through pressure relief, eliminating the need for external water resources. The air circulation within the closed system provides self-service cooling without consuming external materials.
Solution Approach 2:
The invention uses pneumatic principles by utilizing compressed air stored in the air storage tank to inflate the tire and circulate air for cooling purposes, replacing the hydraulic water-based cooling system.
2Temperature
If a circulating water cooling system is built in the hub motor, then cooling effect is improved, but the structure becomes complex and maintenance becomes difficult
Solution Approach 1:
The invention extracts the cooling function from the complex water-based system and implements it through the simpler air pressure relief mechanism, separating the cooling function from the motor structure itself.
Solution Approach 2:
The system changes the physical state and parameters of the cooling medium from liquid water to gaseous air, and changes the cooling mechanism from external water circulation to internal air pressure regulation, simplifying the overall system.
3Temperature
If water pipes are used for cooling, then heat dissipation is achieved, but the pipes are easily blocked and cooling effect reduces
Solution Approach 1:
The invention replaces the hydraulic water pipe system with a pneumatic air-based system, utilizing the compressibility and flow characteristics of gas to avoid blockage issues inherent in liquid-based systems.
4Power
If the hub motor occupies large space in the hub rim, then motor power is improved, but heat dissipation of the tire system is hindered
Solution Approach 1:
The invention merges the motor housing with the tire inflation and cooling system by integrating the air storage tank and pressure relief valve into the hub structure, allowing the motor to serve dual purposes of power generation and heat management.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device effectively maintains constant air pressure, preventing tire bursts and ensuring optimal tire conditions by automatically regulating pressure and temperature, reducing the risk of accidents and simplifying maintenance compared to existing solutions.
Implementation Method 1
The pneumatic slip ring is installed on the main shaft, and the rotating portion of the pneumatic slip ring can rotate synchronously with the hub
Implementation Method 2
when the tire pressure is higher than 220 kPa, the pressure can be relieved to 200 kPa±20 kPa through the pressure relief valve
Implementation Method 3
when the tire pressure is higher than 220 kPa, the pressure can be relieved to 200 kPa±20 kPa through the pressure relief valve; and when the tire temperature is higher than 80° C., the temperature can be reduced by circulating the air in the tire, that is, the pressure relief valve is opened to relieve the pressure
Implementation Method 4
when the tire pressure is lower than 180 kPa, the tire can be inflated to 200 kPa±20 kPa through the valve
Implementation Method 5
The valve is a solenoid valve, and the other end of the valve is connected to the vehicle-mounted air source through the air pipe B
Implementation Method 6
The valve nozzle is provided with a tire pressure sensor that can be integrated with a tire temperature sensor at the same time
Implementation Method 7
The valve nozzle is provided with a tire pressure sensor that can be integrated with a tire temperature sensor at the same time
Data Source
AI summary
The invention provides an automatic constant pressure device for a hub tire system. The device comprises a valve nozzle, air pipes, valves, a pneumatic slip ring, a hub, a pressure relief valve, a tire, a main shaft, an air storage tank, a vehicle-mounted air source and the like. Two valve holes are machined in the hub of the device. The valve nozzle with a tire pressure sensor is installed at one valve hole, and the pressure relief valve is installed at the other valve hole. The tire pressure is detected by the tire pressure sensor. The valve is controlled to inflate through the valve nozzle, and the pressure relief valve is controlled to relieve the pressure. The device has the characteristics of scientific detection principle, simple and reasonable structure and the like.