Construction Cab Protective Structure with Sunk Lower Panel
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Solution Overview
Problem
Conventional construction equipment cabs with protective structures face issues such as deformation during rollover accidents, inadequate space for rear-mounted components, complex assembly processes, increased production costs, and inefficient load dispersion, which compromise operator safety and work efficiency.
Innovation Solution
A construction equipment cab design featuring a protective structure that is mounted on an upper swivel body with a lower panel sunk forward to create space, using first and second fixing members to secure the structure to the cab and swivel body, allowing for horizontal load dispersion and simplified assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the protective structure protrudes backward from the cab, then the operator is protected from rollover accidents, but insufficient space is secured for mounting rear components such as radiator and battery
Solution Approach 1:
The lower panel is inclined upward toward the rear of the cab, transforming the rear space from a flat limited area into a three-dimensional sloped volume. This dimensional change allows the protective structure to protrude backward while still accommodating rear components like radiator and battery in the created sloped space.
2Reliability
If the protective structure is fixed to the cab using conventional fastening members, then the structure is securely attached, but the assembly process becomes complex and time-consuming
Solution Approach 1:
The fixing means is divided into multiple independent components: first fixing members for attaching to the upper swivel body, second fixing members for attaching to the cab, brackets with coupling holes for alignment, and fastening members for final connection. This segmentation allows each component to be optimized independently and simplifies the assembly process by enabling modular installation.
3Reliability
If the protective structure uses complex fastening members and hooks, then secure attachment is achieved, but production cost increases
Solution Approach 1:
The brackets serve multiple functions: they provide structural support for the protective structure, contain coupling holes for alignment and connection, and work with both first and second fixing members. This multi-functionality reduces the total number of separate components needed, thereby reducing production cost while maintaining attachment security.
4Stability of the object's composition
If the protective structure is rigidly fixed to the cab, then attachment stability is improved, but load dispersion efficiency decreases during rollover accidents
Solution Approach 1:
The fixing members and brackets are designed to allow controlled movement and deformation during a rollover accident. The coupling holes and fastening members enable the structure to dynamically adjust its configuration, dispersing loads more effectively while maintaining attachment stability during normal operation.
Data Source
AI summary
Provided is a construction equipment cab having a protective structure capable of protecting an operator from injury due to deformation of a cab in the event of a rollover accident. The construction equipment cab is mounted on an upper swivel body, and the protective structure is mounted on the cab and the upper swivel body and protects an operator from the cab in a rollover accident. The construction equipment cab includes a lower panel provided at a rear lower portion of the cab to be sunk in a forward direction in order to secure a space in which the protective structure is held, and a unit for fixing the protective structure held in the space to the upper swivel body and the cab.