Rear Axle Mounting Machine with Spring Compression Carriage
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Solution Overview
Problem
Existing methods for assembling a rear axle with a deformable crossmember under a vehicle are inefficient, unsafe, and lack a reliable means to compress suspension springs, posing risks to operators due to the high energy stored in compressed springs.
Innovation Solution
A machine with an adjustable hooking system and lifting means, such as hydraulic jacks, is used to compress the suspension springs, allowing for safe and controlled assembly by applying upward forces to the suspension arms, ensuring ease of installation and safety through direct force looping on the machine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual compression of suspension springs is performed during rear axle assembly, then the assembly process becomes simple and economical, but it creates safety risks due to high energy stored in compressed springs
Solution Approach 1:
A carriage equipped with lifting means (hydraulic jacks or electric screws) acts as an intermediary device between the operator and the suspension springs. This intermediary systematically compresses the springs during assembly, eliminating the need for manual compression while maintaining process simplicity. The carriage can be positioned under the vehicle and applies controlled upward force on the suspension arms, safely managing the high energy stored in compressed springs.
2Reliability
If dedicated machines for compressing suspension springs are used, then operator safety is improved, but the device complexity and cost increase
Solution Approach 1:
The carriage is designed as a multi-functional device that can perform both compression of suspension springs and guidance of the rear axle assembly. By integrating multiple functions into a single device, the patent avoids the need for separate dedicated compression machines, thereby reducing overall device complexity and cost while maintaining safety improvements.
3Productivity
If traditional assembly methods without spring compression are used, then the assembly process is rapid and simple, but the manufacturing precision and proper positioning of suspension components cannot be achieved
Solution Approach 1:
The carriage performs preliminary compression of the suspension springs before final assembly operations. By pre-compressing the springs to the correct position, the system enables proper positioning of suspension arms and accurate installation of shock absorbers, thereby achieving manufacturing precision without sacrificing assembly speed. The carriage maintains this compressed state throughout the assembly process.
4Device complexity
If manual positioning of suspension arms is performed, then the assembly process requires minimal equipment, but the ease of operation and control over spring compression is poor
Solution Approach 1:
The patent replaces manual mechanical positioning with a mechanically assisted system using a carriage equipped with lifting means (hydraulic jacks or electric screws). This substitution provides controlled, adjustable compression of suspension springs through mechanical means, significantly improving ease of operation while maintaining relatively simple equipment requirements. The carriage can be easily positioned and the lifting means provide precise control over compression force.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The machine enables efficient, safe, and rapid assembly of rear axles by compressing suspension springs, reducing the risk of accidents and allowing for easy adjustment of the assembly process, ensuring operator safety and ease of installation.
Implementation Method 1
a lifting means provided to apply to the rear of each arm an upward effort
Implementation Method 2
applying upward forces to the suspension arms, ensuring ease of installation and safety through direct force looping on the machine
Data Source
Figure 1~3
AI summary
Machine for assisting the mounting of a rear axle with a deformable crossmember (10) onto a vehicle (2), said axle comprising a longitudinal suspension arm (12) on each side, having a connection at the front on the body shell of said vehicle and having a support at the rear for receiving the base of a suspension spring, the two arms being connected together in a rigid manner by a deformable crossmember, characterized in that said machine comprises a trolley (20) having a height-adjustable anchoring system (36) for fixing same between the two suspension arms (12), on the rear axle (10) or the body shell (2) while preventing rising, said trolley comprising, on each side of the anchoring system, a lifting means (40) for applying an upward force to the rear of each arm.