Streamlined Tail Frame Guard for Loader Rear-End Collision Protection
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Solution Overview
Problem
Engineering machines, such as loaders with battery packs as power sources, face challenges in protecting their rear ends or tail frames from collision damage due to their specific structural adaptations, which often omit conventional counterweights, leaving them vulnerable during operations in complex terrains.
Innovation Solution
An anti-collision structure comprising a streamlined, hollow body made of plates that covers the side and rear end walls of the tail frame, providing enhanced strength and impact resistance while accommodating electrical components and allowing for maintenance access, is integrated into the engineering machine's design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the battery pack is placed in the tail frame to serve as counterweight, then the power source function is improved, but the impact resistance of the tail frame deteriorates
Solution Approach 1:
The tail frame structure is segmented into functional zones: the battery pack occupies the lower portion serving as counterweight, while the upper portion features a streamlined protective body that provides impact protection. This segmentation allows the battery pack to fulfill its power source function while the separate protective structure compensates for the lost counterweight protection capability.
Solution Approach 2:
The protective body is constructed from plate materials forming a composite structure that combines strength with streamlined geometry. This composite plate structure provides the necessary impact resistance to compensate for the removal of conventional counterweight protection, while maintaining the battery pack's functional role.
2Device complexity
If conventional counterweight is omitted to accommodate battery pack, then the device complexity is reduced, but the anti-collision capability deteriorates
Solution Approach 1:
The streamlined protective body serves multiple functions simultaneously: it provides aerodynamic styling, offers impact protection for the tail frame, and creates a protective enclosure for the battery pack. This multi-functionality compensates for the reduced structural complexity by delivering enhanced protective capabilities through a single integrated design element.
Solution Approach 2:
The protective body employs streamlined curved geometry that enhances both aesthetic appearance and collision resistance. The curved surfaces are better at distributing impact forces compared to flat conventional structures, providing superior anti-collision capability while maintaining design simplicity.
3Strength
If thick steel plates are used for tail frame protection, then the impact resistance is improved, but the weight of the machine increases
Solution Approach 1:
The streamlined protective body uses curved plate geometry that provides enhanced structural strength and impact distribution without requiring excessive thickness. The aerodynamic shaping allows the plates to withstand collision forces more efficiently, reducing the need for heavy material while maintaining protection capability.
Solution Approach 2:
The protective structure optimizes plate thickness and geometric parameters to achieve the necessary balance between protection and weight. By carefully selecting plate dimensions and configurations, the design provides adequate impact resistance while minimizing additional weight compared to conventional thick-plate approaches.
Data Source
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AI summary
The disclosure relates to an anti-collision structure for an engineering machine, the engineering machine has a tail frame (200) arranged at a rear end. The anti-collision structure comprises an anti-collision body that at least partially covers side walls (210, 220) and a rear end wall (230) of the tail frame, wherein the anti-collision body is made of plates and configured to have a streamline shape and a hollow structure. The anti-collision structure of the disclosure can effectively avoid collision to the rear end or tail of the engineering machine when the machine climbs or reverses, which improves the overall strength and impact-resistance of the tail frame and the main frame of the engineering machine. In addition, the three-dimensional streamlined shape of the anti-collision structure matches the whole vehicle in style, adding highlights for the electric driver. The disclosure also relates to an engineering machine comprising the anti-collision structure.