Elevator Car Beam Mounting Bracket Design
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Solution Overview
Problem
Conventional elevator car constructions either require numerous parts for beam mounting, leading to complex and time-consuming installation, or lack a car frame, resulting in impaired riding comfort and limited applicability to small elevators.
Innovation Solution
An elevator car design featuring a car frame that supports a cage with a beam mounting bracket above the ceiling, allowing the beam to be mounted using a simple configuration with a horizontal and vertical portion, facilitating easy installation and adjustment while maintaining riding comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a car frame with mounting arms and reinforcing rods is used to mount the beam, then the beam can be securely mounted, but the number of parts increases and installation becomes time-consuming
Solution Approach 1:
The mounting arm and beam support function are merged into a single integrated beam mounting bracket that directly mounts to the cage ceiling. This eliminates the need for separate mounting arms and reinforcing rods, reducing the number of parts while maintaining the beam mounting strength through the bracket's direct structural connection to the ceiling.
Solution Approach 2:
The beam mounting function is extracted from the car frame structure and relocated to the cage ceiling. By mounting the bracket directly to the cage ceiling rather than through the car frame's mounting arms, the complex frame-based mounting system is simplified while preserving the necessary support strength.
2Strength
If a car frame with mounting arms is used to mount the beam, then the beam can be securely mounted, but installation and adjustment such as centering becomes time-consuming
Solution Approach 1:
The beam mounting bracket is pre-positioned on the cage ceiling at the correct location and orientation before beam installation. This preliminary positioning of the bracket eliminates the need for time-consuming centering and alignment adjustments during the beam installation process, while the bracket's structural design ensures proper load-bearing strength.
3Device complexity
If reinforcing materials are disposed on the outer surface of the cage without a car frame, then the construction is simple, but riding comfort is impaired
Solution Approach 1:
The beam mounting bracket merges the structural support function with the vibration isolation function. By integrating the mounting bracket directly to the cage ceiling and incorporating vibration isolation elements, the design achieves both construction simplicity and improved riding comfort, eliminating the need for a separate car frame structure.
4Device complexity
If reinforcing materials are disposed on the outer surface of the cage without a car frame, then the construction is simple, but installation and adjustment such as centering becomes time-consuming
Solution Approach 1:
The beam mounting bracket is pre-installed on the cage ceiling at the precisely correct position and orientation before beam installation. This preliminary action eliminates the need for time-consuming centering and alignment adjustments during beam installation, while maintaining construction simplicity through the direct ceiling-mounting approach without requiring a car frame.
Data Source
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AI summary
An elevator car has: a car frame; a cage (1) that is supported by the car frame, and on which a car doorway (1a) is disposed; a beam (2) that is disposed above the car doorway (1a), and on which a hanger rail (2a) is disposed; and a car door (3) that is moved along the hanger rail (2a) to open and close the car doorway (1a). A beam mounting bracket (21) is mounted above a ceiling (6) of the cage (1). The beam (2) is mounted onto the cage (1) by means of the beam mounting bracket (21); and the beam mounting bracket (21) is disposed along a front edge portion of the ceiling (6) over an entire width direction of the cage (1).