Elevator Guide Rail Nut Positioning Through Elongated Holes
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Solution Overview
Problem
Existing elevator guide rail systems face challenges in simplifying the installation of nuts onto hollow rails, requiring complex alignment and stability without disrupting the rail's structure.
Innovation Solution
A positioning aid with a fastening portion and holding portion, allowing the nut to be easily inserted and secured within the hollow rail's elongated holes, eliminating the need for additional openings and enabling quick, convenient installation without moving the guide rail or holder.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If nuts are inserted into hollow guide rails during installation, then the guide rail can be fastened to guide rail holders, but it becomes difficult to position and hold the nuts securely within the elongated holes without additional openings or complex alignment procedures
Solution Approach 1:
A positioning aid is introduced as an intermediary tool between the nut and the elongated hole. The positioning aid includes a holding portion that engages with the nut and a fastening portion that extends through the elongated hole to the guide rail holder, facilitating easy positioning and secure fastening without requiring complex alignment procedures or additional openings in the hollow guide rail.
Solution Approach 2:
The positioning aid is designed with pre-configured geometric features including a holding portion with specific dimensions and shapes (such as U-shape, C-shape, or arc-shape) that preliminarily establish the correct position and orientation of the nut relative to the elongated hole before fastening occurs. This preliminary positioning action eliminates the need for complex alignment during the fastening process.
2Quantity of substance
If the guide rail is made as a hollow structure, then the weight and material usage are reduced, but accessing the interior to position nuts becomes more difficult
Solution Approach 1:
Instead of accessing the interior of the hollow guide rail to position nuts from within, the positioning aid enables nuts to be positioned and fastened from the exterior through the elongated holes. The holding portion engages the nut externally, and the fastening portion extends through the hole to secure the nut to the guide rail holder, inverting the traditional approach of interior access.
Solution Approach 2:
The positioning aid serves as an intermediary mechanism that bridges the exterior access requirement with the interior fastening function. It allows operators to position and secure nuts through the existing elongated holes without needing to access the hollow interior of the guide rail, maintaining the lightweight hollow structure while enabling easy exterior operation.
3Ease of manufacture
If elongated holes are provided in the hollow rail for fastening, then screws can be inserted and nuts fastened, but the holes may compromise the structural stability and strength of the rail
Solution Approach 1:
The positioning aid performs preliminary positioning of the nut at the correct location within the elongated hole before the fastening screw is inserted. This preliminary action ensures proper alignment and distribution of forces, allowing the elongated holes to be used for fastening without compromising the structural integrity of the hollow rail, as the positioning aid supports the loading during assembly.
Data Source
AI summary
A positioning aid positions a nut on a guide rail of an elevator system, the guide rail being formed as a hollow rail, the hollow rail having a plurality of elongated holes arranged one behind the other in the longitudinal direction of the hollow rail in order to be fastened to a guide rail holder. The positioning aid includes an elongate fastening portion to which at least one nut is fastened and which is dimensioned such that it can be passed through one of the elongated holes together with the at least one nut and moved within the hollow rail. The positioning aid also includes a holding portion for holding the fastening portion, the holding portion being fastened to one end of the fastening portion and being configured to be wider than the elongated hole.