Curved Bunk Arm Design for Logging Waste Compaction
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Solution Overview
Problem
Existing load space bunks in logging equipment are costly and inflexible, struggling to securely transport logging waste and brushwood due to open designs that allow materials to easily fall, and require complex and expensive manufacturing processes.
Innovation Solution
A load space bunk design featuring a frame component with articulated support components and curved bunk arms that expand the surface area, allowing for lateral compression and vertical compaction of materials, along with quick-clamping mechanisms for easy modification and secure locking of bunk arms, utilizing hydraulic actuators for efficient loading and transportation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If bunks are designed with open load space for transporting saw logs, then ease of loading and unloading is improved, but logging waste and brushwood easily fall from the load space
Solution Approach 1:
The bunk arms are designed to be movable between open and closed positions through articulated support components and actuators. This dynamic configuration allows the load space to adapt: open for easy loading/unloading of saw logs, and closed for secure transport of logging waste and brushwood, resolving the contradiction between operational ease and load retention security
2Strength
If bunk arms are fixedly connected by welding to provide structural strength, then strength and reliability are improved, but manufacturing complexity and cost increase
Solution Approach 1:
The bunk arm is divided into multiple separable plates (first plate, second plate, third plate) that can be manufactured independently and then assembled using bolt connections. This segmentation reduces manufacturing complexity by allowing parallel production of simpler components while maintaining structural strength through the reinforced plate configuration with support components
3Ease of manufacture
If conventional straight bunk arms are used, then manufacturing simplicity is maintained, but the ability to compact and secure low-density materials like brushwood is insufficient
Solution Approach 1:
The first plate of the bunk arm is profiled to a curved form on the transverse plane, creating a curved surface that better conforms to the shape of brushwood and logging waste. This curvature improves the compacting effectiveness and load retention for low-density materials while the plate construction remains relatively simple to manufacture compared to fully curved structures
4Adaptability or versatility
If removable bunk designs are used to improve versatility, then adaptability to different materials is improved, but structural strength and stability decrease
Solution Approach 1:
The bunk arm is constructed as a composite structure of multiple plates (first plate, second plate, third plate) joined by bolt connections with reinforcement at support component ends. This composite construction provides both the removability/versatility needed for different materials and the structural strength required through the reinforced plate configuration and articulated support components
Data Source
AI summary
The invention relates to a bunk of a load space which bunk (12) includes a frame component (15), a support component (14) articulated to at least one end of the frame component (15), and two bunk arms (16, 17). At least one bunk arm (17) is composed of two or more plates (18, 19, 20) wherein one of the plates (18) is profiled to a curved form (10) on the transverse plane at the position of the load space and the other plate (20) is made parallel to the curved surface of the bunk arm (17) for widening the surface area of the bunk arm (17).