Mobile Axle Press for Stub Axle Replacement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing axle presses require significant assembly work and time to replace axle stubs, as they necessitate detaching the hollow axle from the carriage, which is inefficient and labor-intensive.
Innovation Solution
A mobile axle press with a movable frame and pull-out unit that can be coupled to the stub axle, allowing for force application in the longitudinal direction to press or detach the stub axle from the hollow axle without separating the hollow axle from the carriage, supported by counter bearings for stability and adjustability to fit various carriage sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a stationary axle press is used to replace axle stubs, then the axle stub can be detached from the hollow axle, but the hollow axle must be detached from the carriage which increases assembly work and time
Solution Approach 1:
The axle press is transformed from a stationary device to a mobile device that can be positioned under the carriage and moved along the longitudinal axis. The frame includes wheels for mobility, and the entire press can be relocated to different positions without requiring detachment of the hollow axle from the carriage, thereby reducing assembly time and work
2Force
If a stationary axle press is used, then sufficient force can be applied to detach the axle stub, but the device requires the hollow axle to be separated from the carriage
Solution Approach 1:
The axle press is divided into functional modules: a mobile frame with wheels for positioning, a pull-out unit with gripping elements for applying force to the axle stub, and a counter bearing for force distribution. This segmentation allows the device to maintain sufficient pulling force while being mobile and not requiring detachment of the hollow axle from the carriage
3Loss of time
If the axle press is made mobile to reduce assembly work, then the hollow axle remains attached to the carriage, but the press must be stable during force application
Solution Approach 1:
A counter bearing is provided that can be positioned under the carriage frame to provide a reaction force during the pull-out operation. This counter bearing stabilizes the mobile axle press during force application, preventing it from moving or tipping while the pull-out unit applies force to the axle stub, thus maintaining stability without requiring the hollow axle to be detached
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
Enables efficient and reliable assembly by allowing axle stub replacement without detaching the hollow axle, reducing assembly work and time, and accommodating different carriage sizes with adjustable counter bearings and power-driven mechanisms for increased usability.
Implementation Method 1
the axle press includes a hydraulic cylinder for moving the pull-out unit. By means of a hydraulic cylinder, a sufficiently large force can be exerted on the axle stub via the pull-out unit
Data Source
Figure 1a~1b
Figure 2~3
Figure 4a~4b
AI summary
Mobile axle press (100) for removing or pressing an axle stub (351) out of or into a hollow axle (350) of a vehicle (300), such as a caravan or trailer, comprising a frame (101) that can be moved under the vehicle with an extension unit (102) that can be coupled to the axle stub, which can exert a force in the longitudinal direction of the hollow axle (350) on the axle stub in order to press the axle stub into or out of the hollow axle and with a counter bearing (103) for supporting the mobile axle press (100) against the vehicle.