Pneumatic Tire Bead Breaking Machine with Shock Absorber

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Solution Overview

Problem

Existing tire bead breaking machines are expensive and require significant maintenance due to the use of double-acting hydraulic cylinders and hydraulic pumps, with high costs and vibrations contributing to wear and fatigue of parts.

Innovation Solution

A tire bead breaking machine utilizing a pneumatic actuator and a hydraulic or telescopic shock absorber to reduce costs and vibrations, with the pneumatic actuator connected to a source of compressed air and the shock absorber providing asymmetrical damping to manage tool movement effectively.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a double-acting hydraulic cylinder and hydraulic pump are used to operate the bead breaking tool, then the machine can effectively break the tire bead, but the cost of the machine increases and maintenance requirements increase

Engineering Contradiction:

Improveeffectiveness of bead breakingVSAvoidcost and maintenance

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces the hydraulic system (hydraulic cylinder and pump) with a pneumatic system (pneumatic actuator). The pneumatic actuator is connected to a source of compressed air and provides the necessary force to move the tool-holder structure and break the tire bead, thereby reducing machine cost and maintenance requirements while maintaining operational effectiveness.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent specifically applies pneumatic technology by using a pneumatic actuator instead of a hydraulic cylinder. The actuator is connected to a compressed air source and uses pneumatic pressure to drive the tool-holder structure, providing a cost-effective and maintenance-friendly alternative to hydraulic systems.

Inventive Principle:

Principle #29Pneumatics and hydraulics

2Device complexity

If a pneumatic actuator is used instead of a hydraulic cylinder, then the cost and maintenance requirements are reduced, but shocks and vibrations occur when the tire bead breaks off the rim

Engineering Contradiction:

Improvecost and maintenanceVSAvoidshocks and vibrations

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

The patent incorporates a shock absorber (damper) mounted between the tool-holder structure and the frame to dampen shocks and vibrations that occur when the tire bead breaks off the rim. This cushioning element is pre-installed to absorb the impact energy, protecting the pneumatic actuator and other machine parts from damage while maintaining the cost advantages of the pneumatic system.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Productivity

If the tool-holder structure moves quickly to break the bead, then productivity is improved, but wear and fatigue of parts increases due to shocks and vibrations

Engineering Contradiction:

Improvespeed of bead breakingVSAvoidwear and fatigue of parts

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The shock absorber is pre-mounted between the tool-holder structure and the frame to cushion the impact when the bead breaks. This allows the tool to move quickly for high productivity while the shock absorber protects against excessive wear and fatigue by absorbing the shock energy, thus maintaining both speed and reliability.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The pneumatic actuator provides rapid movement for high productivity, and when combined with the shock absorber, it achieves fast operation without the wear and fatigue problems associated with hydraulic systems, thereby improving productivity while maintaining part reliability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical 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 solution reduces the overall cost of the machine while minimizing shocks and vibrations during tire bead breaking, leading to lower wear and maintenance requirements for parts.

Implementation Method 1

the actuator is a pneumatic actuator

Methodology Applied

Scientific EffectPneumatic actuation:

Implementation Method 2

a damper mounted between the tool holder structure and the frame to damp the movement of the tool holder structure when it is set in motion by said actuator

Methodology Applied

Scientific EffectShock absorption: Damping

Data Source

PatentEP3156267B1Machine for breaking a tire bead of a wheel

Publication Date: 2019.05.08 DU QUESNE BERTRAND

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AI summary

A tire bead breaking machine (2) for a wheel (1), comprising a frame (40) designed to rest on the ground, a support platform (50) for the wheel (1), and a bead breaking tool (70) connected to a tool-holding structure (80) movably mounted on the frame (40). The machine includes a pneumatic actuator (90) for moving the tool-holding structure (80) to operate the tool, and a shock absorber (100) connecting the tool-holding structure (80) to the frame (40) to dampen the movement of the tool-holding structure (80), particularly when the tire (2) is separated from the rim (3) of the wheel (1).