Motorized Conical Centring Body for Wheel Rim Blocking
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Solution Overview
Problem
Existing wheel rim blocking systems on tyre-mounting machines fail to consistently apply the correct force, risking damage to the rim, especially with large wheels, due to manual torque variability and complexity in existing motorized solutions.
Innovation Solution
A device with a rotating support plate and a stem with a slidable conical centring body, powered by a motor via a mechanical transmission, ensuring consistent and secure rim blocking through efficient force application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual locking collar is used to activate the conical centring body, then the device structure remains simple, but the blocking force becomes inconsistent and may damage the rim or fail to secure it properly
Solution Approach 1:
The motor automatically activates the mechanical transmission to move the cursor and apply the conical centring body to the rim hub, eliminating the need for manual torque application while ensuring consistent blocking force through automated control
Solution Approach 2:
The manual mechanical activation system (locking collar) is replaced with an automated motor-driven mechanical transmission system, substituting human-operated mechanical components with motor-controlled mechanical components to achieve consistent force application
2Object-affected harmful factors
If excessive torque is applied by the locking collar, then the rim may be damaged, but insufficient torque causes the wheel to displace during operations
Solution Approach 1:
The motor-driven system provides controlled force application through the mechanical transmission, implicitly regulating the blocking force to prevent both rim damage and wheel displacement by replacing uncontrolled manual torque with automated mechanical actuation
Solution Approach 2:
The activation method changes from manual torque control to motor-driven mechanical transmission, transforming the parameter control from human-dependent variable torque to machine-controlled consistent torque application
3Device complexity
If the blocking operation is performed manually, then the device complexity remains low, but the operation speed becomes slow
Solution Approach 1:
The motor activates the mechanical transmission to rapidly move the cursor into the engaged position, transforming the slow continuous manual operation into a faster automated periodic actuation that quickly achieves the blocking state
Solution Approach 2:
The motor-driven system pre-positions the cursor and applies the conical centring body to the rim hub automatically, eliminating the time required for manual manipulation and achieving rapid rim securing
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 solution provides a reliable, safe, and rapid method for blocking wheel rims of all sizes, preventing damage during tyre fitting and removal operations, while being simpler and less expensive than existing motorized systems.
Implementation Method 1
a conical centring body (16) which is slidable on the stem (11) and is brought into engagement with the wheel rim (100)
Implementation Method 2
the means for activating comprising a mechanical transmission between a collar (20) and a motor (28)
Data Source
Figure 1~2
Figure 3
AI summary
The blocking device (10) of a wheel rim (100) on a tyre-mounting machine is provided with a rotating support plate (5) having a central hole (6), and comprises a stem (11) for engaging with the rotating support plate (5), and a cursor (15) which is slidable on the stem (11) and which comprises a conical centring body (16) and means for activating for moving the cursor (15) along the stem (11). The means for activating comprise a mechanical transmission between a collar (20) and a motor (28) and the coupling between the cursor (15) and the stem (11) is such as to prevent rotation of the cursor (15) about the stem (11).