Profiled Pin Elevator Guide Shoe Vibration Damping
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Solution Overview
Problem
Existing sliding guide shoes for elevators are affected by irregularities such as rail joints, leading to undesirable vibrations that impair travel comfort.
Innovation Solution
A sliding guide shoe comprising a guide shoe housing and an insert with a profiled pin that engages in a bore of the housing, providing efficient vibration absorption and improved travel comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional sliding guide shoes with simple pins are used, then the structure is simple and easy to manufacture, but vibrations from rail joints are not effectively absorbed, impairing travel comfort
Solution Approach 1:
The pin is given a profiled outer contour with specific geometric features (elevations and indentations) at its contact region with the guide shoe housing. This local structural modification creates increased elasticity precisely where needed to absorb vibrations, while the rest of the pin maintains its simple cylindrical form for ease of manufacture and insertion.
Solution Approach 2:
The pin's outer contour is modified from a simple cylinder to a profiled shape with varying cross-sectional properties along its length. The elevations and indentations create regions of different stiffness and elasticity, allowing the pin to deform elastically under vibration loads while maintaining structural integrity and positional securing function.
2Device complexity
If the insert is positionally secured using simple cylindrical pins, then the assembly is simple, but the pins cannot effectively dampen vibrations from rail joints
Solution Approach 1:
The pin's outer contour is modified locally at the contact region with the guide shoe housing, featuring elevations and indentations that create increased elasticity. This localized structural change adds vibration damping capability without significantly increasing overall device complexity or requiring complete redesign of the pin and housing assembly.
3Object-affected harmful factors
If existing sliding guide shoes are retrofitted to reduce vibrations, then travel comfort can be improved, but the retrofitting process should remain simple and cost-effective
Solution Approach 1:
The insert is divided into separable components: the U-shaped profile body and the profiled pin. This segmentation allows the pin to be replaced independently as a wear or damping element, facilitating easy retrofitting of existing guide shoes without requiring replacement of the entire insert or housing assembly.
Solution Approach 2:
The profiled pin is designed as a relatively simple, inexpensive component that can be easily replaced. The pin absorbs vibrations and can be swapped out without requiring complex tools or procedures, making it an economical solution for retrofitting existing elevator systems to improve travel comfort.
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 profiled pin effectively absorbs vibrations, enhancing travel comfort and allowing for easy retrofitting of existing sliding guide shoes.
Implementation Method 1
the at least one pin has a profiled outer contour created by indentations and/or elevations. In the contact region with the guide shoe housing, the pin has an advantageously increased local elasticity. The vibration isolation achieved thanks to the pin profiled in such a manner has a positive effect on the travel comfort when the car is traveling.
Implementation Method 2
In the contact region with the guide shoe housing, the pin has an advantageously increased local elasticity.
Data Source
AI summary
A sliding guide shoe for an elevator has a guide shoe housing and an insert inserted into the guide shoe housing for guiding an elevator car or a counterweight. In order to positionally secure the insert, the insert has profiled pins that engage in bores in the guide shoe housing. In order to form the profiling, the pins each have radially outwardly directed ribs or projections that are distributed evenly over the circumference.