Electric Earth Working Machine Layout for Balanced Weight Distribution
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Self-propelled earth working machines, such as surface miners and asphalt milling machines, emit significant exhaust gases due to their reliance on combustion engines, which is environmentally detrimental and inefficient.
Innovation Solution
The machine utilizes an electrical energy store as its primary power source, positioning it and the conveyor apparatus on opposite sides of a reference plane orthogonal to the ground contact surface, allowing for operation without a combustion engine or with a smaller auxiliary engine, thereby reducing emissions and stabilizing the machine by balancing weights to prevent tipping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a combustion engine is used as the central power source, then the earth working machine can generate sufficient power for ground removal operations, but it emits significant exhaust gases that are environmentally detrimental
Solution Approach 1:
The patent extracts the harmful combustion process from the power generation system by replacing the combustion engine with an electrical energy store (battery). The electrical energy store provides power without combustion, thereby eliminating exhaust gas emissions while maintaining the power generation capability needed for ground removal operations
Solution Approach 2:
The patent replaces the mechanical combustion engine system with an electrical energy storage system. The combustion engine (mechanical/thermal system) is substituted with an electrical energy store (electrical system), which delivers power through electrochemical reactions instead of combustion, thus eliminating harmful emissions while providing sufficient power
2Stability of the object's composition
If the electrical energy store is positioned far from the axis of rotation to balance the conveyor apparatus, then the machine achieves better stability, but the distance from the working apparatus increases
Solution Approach 1:
The patent applies the counterweight principle by positioning the electrical energy store on the opposite side of the reference plane from the conveyor apparatus. The electrical energy store acts as a counterweight to balance the tipping moment generated by the projecting conveyor apparatus, thereby improving machine stability during operation
Solution Approach 2:
The patent resolves the spatial conflict by utilizing the lateral dimension (side-to-side positioning relative to the axis of rotation) rather than only the longitudinal dimension. By positioning components on opposite sides of the reference plane, the design achieves balance without compromising accessibility to the working apparatus
3Productivity
If the conveyor apparatus projects far from the machine frame to transport ground material, then material transport capability is improved, but a high tipping moment is produced that can cause machine instability
Solution Approach 1:
The patent uses the electrical energy store as a counterweight to offset the tipping moment generated by the projecting conveyor apparatus. By positioning the heavy electrical energy store on the opposite side of the reference plane, the design balances the lateral forces, allowing the conveyor to project far for effective material transport without compromising machine stability
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
This configuration significantly reduces emissions, enhances operational stability by balancing weights, and improves maneuverability by optimizing the placement of the electrical energy store and conveyor apparatus, ensuring effective ground removal operations with reduced environmental impact.
Implementation Method 1
the electrical energy source is an electrical energy store
Implementation Method 2
the electrical energy store on the one hand and the receiving configuration on the other hand are situated on different sides of a reference plane... to balance weights to prevent tipping
Data Source
AI summary
A self-propelled earth working machine (10) comprises a machine frame (14) and a traveling gear (12), wherein the traveling gear (12) comprises a plurality of rollable drive units (18, 22), wherein the machine frame (14) supports a working apparatus (28) for ground removal work, wherein the working apparatus (28) is accommodated on the machine frame (14) so as to be rotatable about an axis of rotation (R), wherein the earth working machine (10) comprises an electric work drive (50) in order to drive the working apparatus (28) to perform a rotating working movement effecting the ground removal work, wherein the earth working machine (10) comprises an electrical energy source (56), which outputs electrical energy to the working apparatus (28) during the ground removal operation, and wherein the earth working machine (10) comprises a receiving configuration (42) for receiving a conveyor apparatus (40) for transporting removed ground material.According to the invention, the electrical energy source (56) is an electrical energy store (56), wherein in a reference state, in which the earth working machine (10) stands on level ground (U), the electrical energy store (56) on the one hand and the receiving configuration (42) on the other hand are situated on different sides of a reference plane (BE) that contains the axis of rotation (R) and that is orthogonal to the contact surface of the ground (U).