Telescopic Arm Hydraulic Pipe Layout for Compact Reliable Extension
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Solution Overview
Problem
Existing handling machines with telescopic arms face issues of hydraulic pipe malfunctions and damage during extension and retraction due to their internal arrangement, which also result in increased bulk and width, compromising reliability and compactness.
Innovation Solution
A telescopic arm design with a U-shaped flexible hydraulic pipe system that extends inside the arm, allowing the pipe to displace along the telescopic ram's rod, providing sufficient clearance and reducing the risk of damage or malfunction, while maintaining a compact width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the hydraulic pipe system is arranged inside the telescopic arm, then the arm width can be reduced and compactness improved, but the pipes are at risk of malfunction or damage during extension and retraction
Solution Approach 1:
The patent applies the dynamics principle by making the hydraulic pipe system flexible rather than rigid. The flexible pipes can dynamically adapt their configuration during telescopic arm extension and retraction, allowing them to move with the changing geometry without experiencing excessive stress or damage. This resolves the contradiction by enabling the pipes to withstand the dynamic movements while remaining compact within the arm structure.
Solution Approach 2:
The patent changes the physical parameters of the hydraulic pipes by using flexible materials with appropriate elasticity and durability characteristics. This parameter change allows the pipes to accommodate the dimensional changes and mechanical stresses during arm extension and retraction, maintaining reliability while keeping the arm width reduced.
2Reliability
If the hydraulic pipe system is arranged outside the telescopic arm, then the pipes are protected from damage, but the arm width increases and compactness is compromised
Solution Approach 1:
The patent applies the nesting principle by placing the flexible hydraulic pipes inside the telescopic arm structure, nesting them within the existing geometric space. This internal arrangement protects the pipes from external damage while utilizing the available internal volume, thereby maintaining compact arm width without sacrificing pipe protection.
Solution Approach 2:
The patent uses flexible hydraulic pipes that can bend and deform within the confined space of the telescopic arm. These flexible conduits adapt to the changing geometry during extension and retraction, providing both protection and compactness simultaneously.
3Device complexity
If rigid hydraulic pipes are used in the telescopic arm, then the structure is simpler, but the pipes cannot accommodate the movement and are prone to damage
Solution Approach 1:
The patent transitions from rigid to flexible piping, applying the dynamics principle to allow the hydraulic system to adapt to movement. While this increases some complexity in pipe selection and installation, it dramatically improves reliability by preventing damage during telescopic arm operation.
Solution Approach 2:
The patent changes the material parameters of the hydraulic pipes from rigid to flexible, selecting materials with appropriate elastic properties that can withstand the dynamic stresses of extension and retraction while maintaining system functionality.
Data Source
AI summary
A handling machine with a telescopic arm including a hydraulic actuator system carried by a second section of the arm mounted so as to slide inside a first section, and a hydraulic control circuit that includes a pipe system that extends at least partly inside the arm and is connected to the hydraulic actuator system in order to supply the hydraulic actuator system. The pipe system includes at least one flexible hydraulic pipe that extends inside the arm and has a first portion fixedly mounted to the first section; a second portion fixedly mounted to the second section; and a U-shaped third portion connecting the first portion and the second portion to one another. The concave side of the U-shaped third portion is oriented towards the end of the first section that is opposite the end of the first section.