Elevator Emergency Stop Layout That Preserves Car Room Space
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Solution Overview
Problem
The existing emergency stop apparatus in elevators, where the brake mechanism and operation device are housed in the vertical frame of the car, leads to an increase in the size of the vertical frame, thereby reducing the size of the car room.
Innovation Solution
The emergency stop apparatus is accommodated in the lower frame of the elevator, comprising a brake mechanism, drive mechanism, and operation mechanism, which are housed within the lower frame, preventing an increase in the vertical frame size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the brake mechanism and operation device are housed in the vertical frame of the car, then the emergency stop apparatus can be effectively operated, but the size of the vertical frame increases and the car room size is reduced
Solution Approach 1:
The brake mechanism and operation device are extracted from the vertical frame and relocated to the lower frame. This separation removes the emergency stop apparatus components from the vertical frame structure, preventing the increase in vertical frame size and thereby maintaining the original car room dimensions while preserving the emergency stop functionality.
Solution Approach 2:
The emergency stop apparatus is relocated from the vertical dimension (vertical frame) to the horizontal dimension (lower frame). By placing the brake mechanism and operation device in the lower frame, the design utilizes the horizontal space of the car rather than expanding the vertical frame, thus maintaining car room size while achieving the same safety function.
2Reliability
If the brake mechanism and operation device are housed in the vertical frame of the car, then the emergency stop apparatus can be effectively operated, but the weight of the car increases
Solution Approach 1:
The brake mechanism and operation device are extracted from the vertical frame and relocated to the lower frame. This redistribution of components optimizes the weight distribution of the car, placing heavy braking components in the lower frame which can better support their weight, thereby reducing the overall car weight while maintaining emergency stop functionality.
3Reliability
If the brake mechanism and operation device are housed in the vertical frame of the car, then the emergency stop apparatus can be effectively operated, but the force required for braking increases
Solution Approach 1:
The emergency stop apparatus is relocated from the vertical dimension to the horizontal dimension by placing it in the lower frame. This positional change allows for optimized force transmission paths and better mechanical advantage in the braking system, reducing the force required to activate the brakes while maintaining effective emergency stopping capability.
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
This configuration prevents an increase in the vertical frame size, maintaining the car room's dimensions and reducing the weight and force required for braking, while also protecting the mechanisms from dust and rail oil.
Implementation Method 1
a brake mechanism having a braking element configured to clamp the guide rail
Data Source
AI summary
An elevator includes: a car having a car room; a guide rail configured to guide a movement of the car; a lower frame provided on a lower portion of the car room; and an emergency stop apparatus configured to stop the movement of the car. The emergency stop apparatus includes a brake mechanism having a braking element configured to clamp the guide rail, a drive mechanism configured to operate the brake mechanism, and an operation mechanism configured to actuate the drive mechanism. The drive mechanism and the operation mechanism are accommodated in the lower frame.