Elevator Governor Assembly Compact Counterweight Integration
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Solution Overview
Problem
Existing elevator governors face challenges in narrow shaft installations, as traditional governors require space at the top of the elevator shaft, which is not always available, and there is a need for a compact solution that can effectively control elevator speed and initiate braking mechanisms in special situations.
Innovation Solution
A follower-type governor assembly with a centrifugal tripping mechanism, including a main pulley, first axle, first guide pulley, and safety devices, which allows the main pulley and first axle to couple and rotate together when the speed exceeds a preset value, activating a braking mechanism via a connecting rod system to control the elevator's speed and initiate braking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional governor is mounted at the top of the shaft, then speed control and braking functions are achieved, but it requires additional space at the top of the elevator shaft which is not available in narrow shaft installations
Solution Approach 1:
The governor assembly is merged with the counterweight structure, integrating the speed control and braking functions directly into the counterweight. This eliminates the need for separate governor mounting space at the top of the shaft, as the counterweight itself becomes the governor housing.
Solution Approach 2:
The counterweight structure is given multiple functions: it serves both as the traditional counterweight for balancing the elevator car and as the housing for the governor assembly. This multi-functionality allows the governor to be installed without requiring additional space in the shaft.
2Area of stationary object
If a follower-type governor is used to move along with the car, then space at the top of the shaft is saved, but the structure becomes more complex requiring additional components like axles, pulleys, and tripping mechanisms
Solution Approach 1:
Instead of having the governor move with the car (follower-type), the invention inverts the approach by having the governor stationary on the counterweight while the counterweight itself moves. This simplifies the structure by eliminating the need for complex moving mounting mechanisms while still achieving space savings.
Solution Approach 2:
The invention extracts the essential governor components (main pulley, axle, safety device, and tripping mechanism) and integrates them directly into the counterweight structure, removing the need for separate governor housing and mounting mechanisms.
3Area of stationary object
If the governor assembly is compactly integrated within the counterweight side, then installation space is reduced, but the mechanical components must be densely packed increasing potential interference
Solution Approach 1:
The governor components are nested within the counterweight structure. The main pulley is mounted on the axle, which is supported by the counterweight. The safety device and tripping mechanism are integrated into this nested arrangement, allowing compact packaging without excessive complexity.
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 enables effective speed control and braking in narrow shaft environments, ensuring safety by compactly integrating the governor assembly within the counterweight side of the elevator, allowing for efficient operation without the need for additional space at the top of the shaft.
Implementation Method 1
a centrifugal tripping mechanism, which enables, when a rotating speed of the main pulley exceeds a preset value, the main pulley and the first axle to be coupled and rotate together
Data Source
AI summary
The present invention provides a governor assembly and an elevator, wherein the governor assembly includes: a support; a first axle rotatably supported by the support; a main pulley rotatably mounted on the first axle relative to the first axle; a first guide pulley near the main pulley; a first safety device actuated by the rotation of the first axle; and a centrifugal tripping mechanism which enables, when a rotating speed of the main pulley exceeds a preset value, the main pulley and the first axle to be coupled and rotate together. The governor assembly according to the present invention is of a compact structure and is applicable to a small mounting space.