Elevator Guide Rail Bracket Layout for Safe Shaft Installation

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Solution Overview

Problem

Existing elevator systems face challenges in simplifying and ensuring the safe installation of guide rails in the elevator shaft, particularly due to the need for precise alignment with the shaft doors and efficient use of space.

Innovation Solution

An elevator system with a mounting structure featuring a U-shaped bracket with a crossmember fixed to the floor and side members projecting into the shaft, allowing for easy alignment and secure fastening of guide rails using elongated mounting holes and separate attachment parts, optimizing space usage and stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the installation bracket is designed with side members projecting into the shaft space, then the guide rails can be securely fastened to the bracket, but the installation becomes more dangerous for the installer and space in the shaft is reduced

Engineering Contradiction:
Improvesecure fastening of guide railsVSAvoidinstaller safety
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The crossmember is positioned and fixed to the floor landing before the side members are installed into the shaft space. This preliminary action allows the installer to work from a safe position on the floor landing while the crossmember supports the subsequent installation of side members and guide rails, eliminating the need for installers to work at height in the shaft space.

Inventive Principle:
Principle #10Preliminary action

2Manufacturing precision

If the crossmember extends into the shaft space, then the guide rails can be properly positioned, but the space utilization in the elevator shaft is reduced

Engineering Contradiction:
Improveguide rail positioningVSAvoidshaft space utilization
Core Design Contradiction:
Manufacturing precisionVSVolume of stationary object

Solution Approach 1:

The crossmember is fixed to the floor landing in advance, establishing a precise reference position for the guide rails. This preliminary positioning ensures accurate alignment and spacing of the guide rails relative to the shaft door, while minimizing the extension into the shaft space. The crossmember acts as a pre-positioned support structure that enables precise guide rail installation without requiring excessive intrusion into the shaft volume.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS20250346458A1Elevator system
Publication Date: 2025.11.13 INVENTIO AG
  • US20250346458A1 patent drawing
  • US20250346458A1 patent drawing
  • US20250346458A1 patent drawing

AI summary

An installation bracket for mounting at a shaft door opening to a shaft of an elevator system includes a crossmember and two side members projecting away from the crossmember. The crossmember has a floor fixing portion adapted to be fixed to a horizontal surface of the floor landing at the shaft door opening. Each of the side members has a rail fastening portion that, when the bracket is mounted at the floor landing, extends in a vertical direction in the shaft and has at least one mounting hole for fastening a guide rail for guiding an elevator car.