Passenger Conveyor Auxiliary Brake With Self-Releasing Pole
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Solution Overview
Problem
The existing auxiliary brake for passenger conveyors requires a worker to manually release the brake after confirming its movement, making it difficult to easily release the brake.
Innovation Solution
An auxiliary brake system for passenger conveyors that includes a braking wheel with grooves and a movable pole that can shift between contact and non-contact positions with the grooves, allowing for automatic release of the brake.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a worker manually releases the auxiliary brake after confirming its movement, then the braking operation can be safely released, but the release operation becomes complex and time-consuming
Solution Approach 1:
The auxiliary brake automatically releases itself through the pole's automatic retraction mechanism. When the braking wheel rotates, the groove passes under the pole, causing the pole to be pushed back by a spring to the release position without requiring manual intervention, thus achieving self-service operation
Solution Approach 2:
The spring is pre-compressed to store energy that automatically pushes the pole to the release position after braking. This preliminary energy storage enables automatic release action without waiting for manual operation, resolving the contradiction between safety confirmation and ease of release
2Force
If the pole remains in contact with the groove face during rotation, then continuous braking force is applied, but the release operation becomes difficult and time-consuming
Solution Approach 1:
The braking action occurs periodically only when the groove face contacts the pole during rotation. The pole automatically moves between contact (braking) and non-contact (release) positions as the groove passes under it, creating periodic braking action that enables easy release when not in use
Solution Approach 2:
The pole's position is dynamically changed during operation. It moves between the braking position (contacting groove face) and release position (retracted by spring) based on the rotation of the braking wheel, enabling automatic transition between force application and release states
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
Enables easy and automatic release of the auxiliary brake, reducing the need for manual intervention and improving operational efficiency.
Implementation Method 1
a pole (41) having a shape of a rod and provided being movable in a direction of the rotation axis of the braking wheel (30), between a first position of coming into contact with any face of the plurality of grooves (31) and a second position of not coming into contact with any face of the plurality of grooves (31)
Data Source
AI summary
There is provided an auxiliary brake of a passenger conveyor that can be easily released. The auxiliary brake of the passenger conveyor includes: a braking wheel comprising a groove on one side face, the groove being depressed in a direction of a rotation axis and having a face parallel to the rotation axis on one end, and the braking wheel being provided so as to rotate synchronously with a main axis of a sprocket of the passenger conveyor; and a pole having a shape of a rod and provided being movable in the direction of the rotation axis of the braking wheel, the pole being displaced between a first position of coming into contact with any face of the groove and a second position of not coming into contact with any face of the groove.