Telescopic Lifting Arm Assembly for Rescue Vehicles
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Solution Overview
Problem
Prior art lifting arm assemblies on vehicles are designed for single-purpose use, limiting their versatility and adaptability for various operations such as fire prevention, rescue, construction, and military applications.
Innovation Solution
A lifting arm assembly with a rotating base and telescopic structure that can be positioned in multiple configurations for transport and operation, featuring quick clamping mechanisms for attaching different work modules, allowing for flexible use in various scenarios without increasing the vehicle's overall length or height, and enabling operations under bridges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the lifting arm assembly is designed for single-purpose use, then the device complexity is reduced, but the adaptability or versatility deteriorates
Solution Approach 1:
The lifting arm assembly is designed with universal functionality to perform multiple tasks including fire prevention, rescue operations, construction work, and military applications. The same basic structure supports various work modules such as water tanks, ladders, cages, and cutting tools, eliminating the need for separate specialized vehicles for each function.
Solution Approach 2:
The lifting arm assembly is divided into modular components including a rotating base, telescopic central part, and outermost part with quick clamping means. This segmentation allows different work modules to be attached and detached at the outermost end, enabling the system to adapt to various operational requirements while maintaining a standardized base structure.
2Productivity
If the lifting arm assembly is extended to increase reach, then the productivity is improved, but the vehicle's overall length increases
Solution Approach 1:
The lifting arm assembly employs a telescopic structure where the outermost part can be extended outward from the central part, and the central part itself can telescope from the basic part. This nested telescopic design allows the assembly to achieve extended reach for productive operations while retracting to a compact configuration that fits within the vehicle's overall dimensions during transport.
Solution Approach 2:
The lifting arm assembly utilizes vertical extension through telescopic mechanisms rather than increasing horizontal vehicle length. The assembly can extend upward and outward in three-dimensional space, providing increased reach and working height without proportionally increasing the vehicle's footprint or required parking space.
3Productivity
If the lifting arm assembly is positioned to increase height, then the productivity is improved, but the vehicle's center of gravity rises
Solution Approach 1:
The lifting arm assembly achieves increased working height through vertical telescopic extension of the central and outermost parts, rather than permanently elevating the vehicle's center of gravity. The telescopic mechanism allows the assembly to reach high positions only when needed for operations, while maintaining a low profile and stable center of gravity during transport and when not in use.
4Productivity
If the lifting arm assembly is designed for rapid deployment, then the productivity is improved, but the device complexity increases
Solution Approach 1:
The lifting arm assembly incorporates dynamic telescopic mechanisms that can be rapidly extended and retracted using hydraulic or electric actuators. The telescopic central part and outermost part can be deployed quickly from a compact transport position to an extended working position, enabling rapid response to operational needs without requiring complex manual assembly procedures.
Solution Approach 2:
The lifting arm assembly is pre-configured with quick clamping means at the outermost end that can rapidly secure various work modules. The telescopic structure is pre-positioned and can be extended to the required length before attachment, allowing for swift deployment of different task-specific equipment without time-consuming adjustments or reconfigurations.
Data Source
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AI summary
A vehicle equipped with a lifting arm assembly and comprising a chassis structure (1 ) with a cabin (2) and a lifting arm assembly (5) fastened on top of the chassis structure so that it is capable of turning around a vertical rotating axis (Y) by means of a rotating base (9). For the purpose of folding it into the transport position the lifting arm assembly (5) is dimensioned so that it is positioned behind the cabin (2) in those two positions in which the lifting arm assembly (5) extends in parallel to the longitudinal axis of the vehicle, either forward or backward. In a rescue vehicle the lifting arm assembly (5) also comprises at least an arm (8) fastened to the end of the lifting arm assembly (5) so that said arm (8) can be outstretched to a standby position in which it is located on top of the cabin (2). The lifting arm assembly (5) comprises a third arm (8) fastened to the end of the second arm (7) and arranged to rotate in the vertical direction in such a manner that in the transport position of the lifting arm assembly (5) the third arm (8) can be turned under the second arm (7) or next to it, and the rotating base (9) is also positioned under the central part of the second arm (7) when the lifting arm assembly (5) is in said transport position.