Construction Machine Working Arm Layout for Reduced Width
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing construction machinery designs, particularly those transitioning to electrification, face structural complexity due to the need for both linear and rotating mechanisms to support hydraulic actuators, making simplification difficult.
Innovation Solution
A construction machine design featuring drive units with fixed drive shafts supporting a boom, arm, and attachment, where the center of the boom is aligned within the width of the arm, and drive mechanisms are positioned to minimize width, allowing for simplified structural arrangements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If both linear motion mechanism and rotating mechanisms are used to support hydraulic actuators, then the actuators can function properly, but the structural complexity increases
Solution Approach 1:
The patent combines the linear motion function and rotating support function into a single integrated mechanism. The rotating mechanism serves dual purposes: it supports the actuator while also enabling the linear motion required for operation, eliminating the need for separate linear and rotating mechanisms.
Solution Approach 2:
The rotating mechanism is designed to perform multiple functions simultaneously: it provides rotational support for the actuator and also enables the linear motion capability. This multi-functional design reduces the total number of components needed while maintaining full actuator functionality.
2Length of moving object
If drive mechanisms are positioned to minimize width, then the overall width is reduced, but the structural arrangement becomes more constrained
Solution Approach 1:
The patent resolves width constraints by repositioning drive mechanisms along the longitudinal axis rather than being constrained to the width dimension. This dimensional shift allows the mechanisms to be arranged in a line along the length of the equipment, minimizing width while providing adequate space for structural arrangement and maintenance access.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A construction machine (1) includes: a support portion (5); first to third drive units (10, 20, 30) having first to third drive shafts (11, 21, 31) respectively; a boom (7) having a proximal end portion (7A) supported on the support portion via the first drive unit (10); an arm (8) having a proximal end portion (8A) supported on the boom via the second drive unit; and an attachment (9) having a proximal end portion (9A) supported on the arm via the third drive unit. The first drive shaft (11) is fixed to a distal end portion (5A) of the support portion and the proximal end portion of the boom. The second drive shaft (21) is fixed between a distal end portion (7B) of the boom and the proximal end portion of the arm. The third drive shaft is disposed between a distal end portion (8B) of the arm and the proximal end portion of the attachment. The center of the boom is situated within the width of the arm.