Mono-Frame Forest Trailer with Reinforced Longitudinal Beam
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Solution Overview
Problem
Existing forest trailers have complex and expensive constructions to support crane movements and mounting platforms, which complicate the attachment of cranes and increase costs.
Innovation Solution
A mono-frame forest trailer design where the longitudinal beam serves as the mounting platform, featuring a cross-sectional shape with multiple corners, allowing for a simpler and more stable construction by integrating the fastening platform directly into the beam, and optionally reinforced with multi-layers or varying wall thicknesses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a mono-frame construction is used for the forest trailer, then the overall structure is simpler, but the frame cannot absorb the forces of crane movements without complex reinforcements
Solution Approach 1:
The longitudinal beam is designed with varying wall thickness along its length, with thicker sections at critical locations (front, rear, and crane mounting areas) to absorb crane movement forces, while maintaining thinner sections elsewhere to reduce overall weight and complexity. This local reinforcement strategy provides the necessary strength without requiring complex reinforcements throughout the entire frame.
Solution Approach 2:
The mono-frame is divided into multiple longitudinal beams that are connected by transverse beams, creating a segmented structure. This segmentation allows each longitudinal beam to be optimized independently for specific load conditions, while the transverse beams provide lateral stability and force distribution, enabling the simple mono-frame design to absorb crane forces effectively.
2Strength
If complex constructions (reinforcements using plates, struts or separate crane base frame) are added to the mono-frame in the crane area, then the frame can absorb crane forces, but the construction becomes more complex and expensive
Solution Approach 1:
The crane mounting function is merged directly into the longitudinal beam structure itself, rather than being a separate attachment. The longitudinal beam's integrated design with optimized wall thickness and cross-sectional geometry provides both structural strength and crane mounting capability in a single component, eliminating the need for separate reinforcement plates, struts, or crane base frames.
Solution Approach 2:
The longitudinal beam serves multiple functions simultaneously: it provides the primary structural framework, absorbs crane movement forces, provides mounting surfaces for the crane, and maintains lateral stability. This multi-functionality eliminates the need for dedicated reinforcement components, reducing overall construction complexity while maintaining necessary strength.
3Adaptability or versatility
If brackets (stanchions) are added to hold economic goods, then the trailer can transport goods, but the construction becomes more expensive
Solution Approach 1:
The longitudinal beam's cross-sectional geometry with multiple corners and flat surfaces is designed to directly accommodate and support stanchions without requiring additional brackets or mounting hardware. The beam's own structure provides the necessary support surfaces, allowing stanchions to be attached directly to the beam, thereby reducing construction complexity and cost while maintaining goods holding capability.
4Stability of the object's composition
If a double-frame construction is used with two profile tubes, then sufficient stability is achieved, but the design and mounting become more complex
Solution Approach 1:
Instead of using two separate profile tubes arranged side-by-side (horizontal dimension), the invention uses a single longitudinal beam with a multi-corner cross-section that provides stability through its geometric configuration in the vertical and lateral dimensions. The multi-corner cross-section creates inherent lateral stability and mounting surfaces without requiring a second tube, achieving double-frame-like stability with a simpler mono-frame design.
Data Source
Figure 1~2
Figure 3a~4
Figure 5a~5b
AI summary
Forestry trailer for transporting agricultural or forestry goods with - a central longitudinal beam (2), - at least one axle (15) load-bearing mounted on the longitudinal beam (2) and - a mounting platform (4) suitable for attaching and supporting a crane (5), wherein the longitudinal beam (2) extends with a continuous cross-section at least from the mounting platform (4) to the at least one axle (15), wherein the longitudinal beam (2) functions as a mounting platform (4), wherein the crane (5) is attached to the mounting platform (4) by means of a screw connection and the longitudinal beam (2) is designed in the area of the mounting platform (4) as a multi-layered structure or with a thickening to reinforce the longitudinal beam (2).