Conveyor Speed Reducer With Dynamic Engagement Member
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Solution Overview
Problem
Gravity roller conveyor systems face challenges in reducing the speed of low-momentum objects without causing them to stall, leading to product flow stoppages.
Innovation Solution
A speed reducer system with a rotatable engagement member biased by a damper and controlled by a retraction mechanism, which adjusts its position in response to object momentum and detection signals to prevent stalling, allowing for controlled speed reduction and resumption of movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a speed-reducing device is used to slow down objects on a gravity roller conveyor, then the speed of high-momentum objects is reduced, but low-momentum objects become stalled and cause product flow stoppage
Solution Approach 1:
The engagement member is designed to be dynamically adjustable between an extended position (for speed reduction) and a retracted position (for preventing stalls). The actuator enables the engagement member to change its position based on real-time detection of object characteristics, allowing the system to adapt its speed reduction behavior to match the momentum of passing objects.
Solution Approach 2:
A detection device monitors objects on the conveyor and provides feedback signals to a controller. The controller processes this information and adjusts the engagement member's position accordingly - extending it when high-momentum objects are detected and retracting it when low-momentum objects are detected, thereby preventing unnecessary stalling.
2Loss of energy
If the engagement member is positioned to reduce speed, then momentum dissipation occurs, but low-momentum objects cannot overcome the resistance and become stalled
Solution Approach 1:
The engagement member transitions from a static speed-reducing barrier to a dynamic element that can extend and retract. When extended, it provides momentum dissipation for high-momentum objects; when retracted, it eliminates resistance for low-momentum objects, maintaining continuous product flow without unnecessary energy loss.
Solution Approach 2:
The system changes the parameter of engagement member position (extended vs. retracted) based on detected object characteristics. This parameter change allows the system to control the amount of momentum dissipation applied, matching it to the actual momentum of passing objects and preventing productivity loss.
3Speed
If a speed-reducing mechanism is continuously engaged, then all objects are slowed down, but this causes unnecessary stoppages for low-momentum objects
Solution Approach 1:
The engagement member operates periodically rather than continuously - it is extended only when high-momentum objects are detected and retracted when low-momentum objects pass. This periodic engagement reduces speed only when necessary, eliminating unnecessary stoppages and time loss while maintaining consistent speed reduction for appropriate objects.
Solution Approach 2:
The detection device and controller provide real-time feedback about object momentum characteristics, enabling the engagement member to adjust its state dynamically. This feedback mechanism ensures speed reduction is applied consistently to high-momentum objects while preventing unnecessary interruptions to low-momentum object flow.
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
Effectively reduces the speed of objects moving on a conveyor while preventing stalling, ensuring continuous product flow by dynamically adjusting the engagement member's position based on object momentum and detection of prolonged presence in a predetermined volume.
Implementation Method 1
A damper is connected to the mounting member and is structured to bias the engagement member toward the first rotational position
Data Source
AI summary
A speed reducer for a gravity roller conveyor system is provided. The speed reducer includes a mounting member and an engagement member rotatably connected to the mounting member and structured to be rotatable to a first rotational position and to a second rotational position. A damper is connected to the mounting member and is structured to bias the engagement member to the first rotational position. A retraction mechanism is operably connected to the engagement member and is structured to be operable to rotate the engagement member to the second rotational position against a biasing force exerted by the damper on the engagement member when an object moving along the conveyor becomes stalled, thereby enabling the object to move along the conveyor past the engagement member. A speed reducer system incorporating the speed reducer is also described.