Road Sweeper Pneumatic Actuation for Floating Brush Control
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Solution Overview
Problem
Existing road sweeping machines face inefficiencies due to hydraulic actuators that limit floating motion, pose safety risks, release pollutants, and have complex maintenance, with inadequate anti-collision systems and stabilization issues.
Innovation Solution
A sweeping machine equipped with pneumatic actuators and pneumatic suspensions that enable floating motions, reduce environmental risks, simplify maintenance, and enhance safety through electronic control systems and improved stabilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If hydraulic actuators are used to move sweeping elements, then the sweeping system can be controlled, but floating motion is limited and maintenance complexity increases
Solution Approach 1:
The patent replaces hydraulic actuators with pneumatic actuators (specifically pneumatic cylinders) to move the sweeping elements. This substitution eliminates the need for hydraulic fluid and complex hydraulic circuits, thereby reducing maintenance complexity while enabling floating motion capability through the compressible nature of pneumatic systems.
Solution Approach 2:
The patent specifically employs pneumatic actuators (cylinders) to replace traditional hydraulic actuators. The pneumatic system provides the necessary force for moving sweeping elements while offering inherent compliance that enables floating motion, and eliminates hydraulic fluid leakage and contamination issues.
2Ease of operation
If hydraulic actuators are used, then the sweeping system can be actuated, but polluting substances are released in case of breakage
Solution Approach 1:
The patent substitutes hydraulic actuators with pneumatic actuators. This replacement eliminates the use of hydraulic fluid that could leak and pollute the environment. The pneumatic system uses compressed air which, even in case of failure, does not release polluting substances, thereby resolving the environmental pollution issue while maintaining actuator functionality.
3Ease of operation
If hydraulic actuators are used, then the sweeping system can be controlled, but anti-collision and safety systems are insufficient
Solution Approach 1:
The patent replaces hydraulic actuators with pneumatic actuators, which inherently provide safer operation. Pneumatic systems are cleaner and pose less risk of contamination to operators. Additionally, the patent incorporates electronic control systems with sensors that detect collisions and automatically stop the sweeping elements, significantly improving operator safety while maintaining system control.
Solution Approach 2:
The patent implements electronic control systems with sensors that provide feedback on the position and status of sweeping elements. This feedback mechanism enables real-time monitoring and automatic response to potential collisions or unsafe conditions, thereby enhancing operator safety while preserving full system control capability.
4Ease of operation
If hydraulic actuators are used, then the sweeping elements can be moved, but the system requires complex maintenance
Solution Approach 1:
The patent replaces complex hydraulic actuators with simpler pneumatic actuators (cylinders). Pneumatic systems have fewer moving parts, no hydraulic fluid to manage, and simpler sealing requirements, making them significantly easier to maintain and repair while still providing the necessary motion for sweeping elements.
5Ease of operation
If hydraulic actuators are used, then the sweeping system can operate, but stabilization of loads is compromised
Solution Approach 1:
The patent replaces hydraulic actuators with pneumatic actuators, whose compressible nature provides inherent shock absorption and load stabilization. The pneumatic system naturally dampens vibrations and maintains horizontal position stability while still enabling full operational capability of the sweeping system.
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 machine achieves efficient waste removal with floating motions, reduced environmental impact, simplified maintenance, and enhanced operator safety by using pneumatic actuators and suspensions.
Implementation Method 1
The invention relates to a sweeping machine... equipped with pneumatic actuators and pneumatic suspensions that enable floating motions
Implementation Method 2
A sweeping machine equipped with pneumatic actuators and pneumatic suspensions that enable floating motions, reduce environmental risks, simplify maintenance, and enhance safety through electronic control systems and improved stabilization
Data Source
AI summary
A sweeping machine (1) comprising a vehicle (2) defining a longitudinal axis (2a) parallel to the direction of travel of the vehicle (2) on the ground and comprising at least a supporting frame (20), motion means (21) constrained unstably to the frame (20) and configured to drive the motion of the vehicle (2) with respect to the ground, a sweeping system (3) connected to the frame (20), suitable to move waste present on the ground and comprising: at least a sweeping element (30) suitable to move waste from the ground and defining a reference position (3a) with respect to the frame (20), at least a connecting arm (31) for each sweeping element (30) suitable to connect each sweeping element (30) to the vehicle (2), a waste collection system (4) integral to the frame (20) and placed near the sweeping system (3), a waste containment chamber (5) connected to the collection system (4) and suitable to contain waste, the sweeping system (3) further comprising at least a pneumatic actuator (32) controlled electronically, suitable to move each sweeping element (30) so as to modify the reference position (3a) with respect to the frame (20), and constituting at least part of each arm (31) so as to be able to modify the extension of the arm (31).