Haul Truck Dump Body Front Wall Support Structure
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Solution Overview
Problem
Conventional dump body support structures in haul trucks are sensitive to manufacturing variations and maintenance practices, leading to unreliable load support and increased machine weight, which affects payload capacity and service life.
Innovation Solution
A support structure arrangement featuring convex down-facing contact surfaces on vertically spaced elongate structural members, integrated with a horizontal support structure, provides a reliable and lightweight load distribution between the dump body and the haul truck frame, ensuring even load transfer and reduced machine weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional dump body support structures are used, then load support is provided, but the structure is sensitive to manufacturing variations and maintenance practices, leading to unreliable load support and increased machine weight
Solution Approach 1:
The support structure employs convex contact surfaces on the vertical support structures that interface with the haul truck frame. These curved surfaces provide a reliable load transfer mechanism that is insensitive to manufacturing variations and maintenance conditions, achieving both high reliability and reduced weight compared to conventional flat-contact structures
2Reliability
If reinforcement of multiple load paths is added to improve reliability, then load support becomes more reliable, but the machine weight increases
Solution Approach 1:
The patent applies reinforcement locally at the contact surfaces between the vertical support structures and the haul truck frame. By concentrating structural quality where load transfer occurs (the convex contact surfaces) rather than uniformly reinforcing all load paths, the design achieves high reliability while minimizing overall weight
Solution Approach 2:
The support structure utilizes composite construction with vertical support structures having convex contact surfaces that interface with the frame. This composite arrangement of different structural elements (vertical supports with convex surfaces, horizontal supports, and frame interfaces) provides reliable load distribution without requiring excessive reinforcement throughout the entire structure
3Weight of moving object
If the dump body weight is reduced to decrease machine weight, then machine weight decreases, but payload carrying capability may be compromised
Solution Approach 1:
The convex contact surfaces on the vertical support structures provide an efficient load transfer geometry that maximizes strength-to-weight ratio. This curved surface design allows the dump body to be lighter while maintaining full payload carrying capability, as the convex surfaces efficiently distribute loads to the haul truck frame
4Ease of manufacture
If conventional flat contact surfaces are used, then manufacturing is simpler, but load distribution is uneven and reliability is reduced
Solution Approach 1:
The convex contact surfaces provide superior load distribution and reliability compared to flat surfaces. While slightly more complex to manufacture than flat surfaces, the convex geometry is still relatively simple to produce and provides significant improvements in load transfer reliability and insensitivity to manufacturing variations
Data Source
AI summary
A support structure arrangement for a front wall of a dump body comprises a first vertical support structure and a second vertical support structure. The first and second vertical support structures can be elongate structural members spaced in a width direction from each other. Bottom portions of the first and second vertical support structures can form down-facing contact surfaces.