Multi-Stage Sliding Floor System for Semi-Trailer Unloading
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Solution Overview
Problem
Existing sliding floor systems in semi-trailers for unloading large volumes face issues such as excessive force required for unloading, structural damage, wear and tear, and friction-related complications, especially when dealing with sticky materials and residual loads, leading to inefficient and slow discharge processes.
Innovation Solution
A system with at least three stages of sliding floors and walls, where the first stage involves a sliding floor, the second stage includes a second sliding floor with a smaller displacement, and the third stage features a vertical sliding wall, allowing for staged unloading and reducing frictional resistance, enabling faster and more efficient discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a two-stage sliding floor system is used for unloading large volumes, then the unloading function is achieved, but excessive force is required causing structural damage and equipment wear
Solution Approach 1:
The unloading system is divided into three independent sliding stages instead of two: the first sliding floor (6 meters), the second sliding floor (4.5 meters), and the sliding wall (3-3.5 meters). Each stage can operate independently or in combination, distributing the unloading force across multiple smaller displacements rather than requiring one large forceful movement. This segmentation reduces the peak force required on any single stage while maintaining the ability to unload large volumes.
2Productivity
If a two-stage sliding floor system is used, then unloading is achieved, but unloading time is excessive (15 minutes)
Solution Approach 1:
The three-stage system allows for parallel and sequential operation of different sliding components. The first sliding floor can move independently to discharge material, while the second sliding floor and sliding wall can simultaneously or subsequently operate to complete the unloading. This segmented approach enables faster overall discharge compared to the sequential two-stage system, reducing unloading time from 15 minutes to approximately 3 minutes.
3Reliability
If residual load is present outside the sliding platform, then friction increases, but this restricts movement and causes load compaction
Solution Approach 1:
The three-stage design ensures that material is progressively moved through multiple smaller displacements rather than one large movement. The first sliding floor moves material a certain distance, then the second sliding floor continues the movement, and finally the sliding wall completes the discharge. This segmented approach prevents material from becoming compacted or creating excessive friction, as each stage operates on a smaller portion of the total displacement, maintaining consistent discharge throughout the process.
Data Source
Figure 1~2
Figure 3~4
AI summary
A system of sliding floors and sliding walls, used in the loading platforms of road semi-trailers for horizontal unloading in stages, which is installed within a loading platform (1) attached to road semi-trailers (2), and wherein this loading platform (1) has a rear side wall (11) comprising a first sliding floor (10) attached to the base of the loading platform (1), a second sliding floor (20) attached to the first sliding floor (10), and a vertical sliding wall (30) attached to the second sliding floor (20). The first floor (10) performs "stage 1" of the displacement, moving and carrying the second floor (20) and the sliding wall (30) with it. After the first floor (10) has been moved, the second floor (20) moves over the first floor (10), carrying out "stage 2" of the movement, taking with it the sliding wall (30) which is attached to it.After the second floor (20) has been moved, the sliding wall (30) is then moved, performing "stage 3" of the unloading, moving over the second floor (20) to the outermost end of the loading platform (1), as close as possible to the rear side wall (11).