Construction Machine Central Foothold Transit Zone Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Construction machines with central footholds and maintenance access passages often require irregular movements, such as oblique or transverse movements, during transit between the access passage and the foothold, leading to instability and difficulties in arranging other equipment within limited spaces.
Innovation Solution
The construction machine design includes a maintenance access passage with an upper end portion aligned inwardly and adjacent to the central foothold, allowing a straight-line transit zone that eliminates the need for irregular movements and accommodates additional equipment without altering the space dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the maintenance access passage is extended to form a continuous region with the central foothold, then worker transit safety is improved, but the space for arranging other equipment is reduced
Solution Approach 1:
The maintenance access passage is extended not only in the front-rear direction but also in the width direction, creating a two-dimensional expansion of the transit region. This allows the passage to connect with the central foothold through both longitudinal and lateral continuity, providing workers with multiple path options while maintaining compact overall dimensions that preserve equipment arrangement space.
2Ease of operation
If the maintenance access passage is significantly extended within limited space, then worker transit continuity is improved, but the difficulty of disposing other equipment increases
Solution Approach 1:
The maintenance access passage is designed with non-uniform width along its length, being wider at certain sections and narrower at others. This local variation in dimensions allows the passage to provide sufficient continuity for worker transit while strategically allocating space in different sections, thereby accommodating other equipment in the narrower regions without compromising overall transit quality.
3Stability of the object's composition
If the maintenance access passage aligns with the central foothold in the front-rear direction, then worker transit stability is improved, but the complexity of the design increases
Solution Approach 1:
The maintenance access passage is designed with asymmetric alignment relative to the central foothold, where the passage connects to the foothold at a specific offset position rather than at the exact center. This asymmetric configuration provides stable linear transit path for workers while the offset connection simplifies the overall structural design by avoiding the need for complex centered alignment mechanisms.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
Provided is a construction machine having a central foothold (27) and a maintenance access passage (P2) with high safety. The construction machine includes an upper slewing body (2), which includes: an upper frame (10), an engine compartment (12) on a rear end region of the upper frame(10), a cabin (17) on a right or left region of the upper frame (10), a central foothold (27) immediately forward of the engine compartment (12) and on a central region of the upper frame (10) widthwise of the upper frame (10), and a maintenance access passage (P1) extending rearward while elevated to guide a worker from the ground forward of the upper frame (10) to the central foothold (27) on a side opposite to the cabin (17). Widthwise of the upper frame (10), an inward edge of an upper end portion of the maintenance access passage (P2) is located inward of one edge of the central foothold, to thereby form a transit zone (S) between the maintenance access passage (P2) and the central foothold (27).