Sliding Guide Shoe With Inclined Ends For Elevator Rail Joints
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Solution Overview
Problem
Existing sliding guide shoes for elevators experience undesirable vibrations and reduced service life due to rail joints, especially when encountering bent sheet metal guide rails, which are difficult to rework and lead to material wear.
Innovation Solution
A sliding guide shoe with a U-shaped profile sliding element and guide shoe housing, featuring non-horizontal upper and lower ends with an angle of inclination between 5° and 45°, and a damping element made of elastic materials, to minimize impact and vibrations at rail joints, and extend the service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional sliding guide shoes with horizontal ends are used, then the structure is simple and easy to manufacture, but hard and abrupt impacts occur when traveling over rail joints, causing vibrations and reduced service life
Solution Approach 1:
The sliding element features non-horizontal upper and lower ends with inclined surfaces instead of straight horizontal edges. This curvature/inclination allows the sliding guide shoe to gradually transition over rail joints rather than making abrupt impacts, reducing vibrations and extending service life while maintaining structural simplicity
2Productivity
If guide rails are bent from sheet metal to reduce manufacturing cost, then production efficiency increases, but rail joints with non-homogeneous transitions occur that cause vibrations and material wear
Solution Approach 1:
The inclined non-horizontal ends of the sliding element create a gradual transition surface that works particularly well with bent sheet metal guide rails. This allows the sliding guide shoe to smoothly traverse the non-homogeneous transitions at rail joints without causing excessive vibrations or material wear, maintaining the benefits of efficient sheet metal manufacturing
Solution Approach 2:
The inclined surfaces at the ends of the sliding element act as a cushioning mechanism before impact occurs. By gradually transitioning over the rail joint threshold rather than making abrupt contact, the design预先 absorbs impact energy and prevents hard strikes that would cause vibrations and material removal
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 ensures low-vibration, low-noise travel and extended service life by reducing material wear and improving traveling comfort, even at rail joints, particularly on sheet metal guide rails.
Implementation Method 1
a damping element made of elastic materials, to minimize impact and vibrations at rail joints
Implementation Method 2
at least one and preferably each of the upper and lower ends along the respective ends have a non-horizontal course, a hard and abrupt impact can be avoided
Data Source
AI summary
A sliding guide shoe for an elevator includes a guide shoe housing and a two-part insert inserted into the guide shoe housing. The insert includes a damping element and a sliding element for guiding an elevator car or a counterweight.