Mill Roller Transmission Mechanism With Elastic Tensioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing mill roller transmission systems experience over-tensioning of toothed belts, leading to reduced lifespan and inefficient power transmission due to rigid tensioning mechanisms and suboptimal tooth pitch configurations, which also complicate assembly.
Innovation Solution
An elastic adjustable tensioning mechanism with a tensioning wheel and press mechanism that allows for buffering of belt tension, combined with optimized tooth pitch and surface designs for improved power transmission and ease of assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a rigid tensioning mechanism is used to tension the toothed belt, then the belt is properly tensioned for power transmission, but the belt experiences over-tensioning and shortened life when hard foreign matters are entrapped or during startup
Solution Approach 1:
The patent applies the dynamics principle by replacing the rigid tensioning mechanism with a dynamic elastic tensioning system. The elastic component (spring or rubber element) allows the tensioning wheel to move relative to the frame, enabling the system to adapt to varying tension requirements. During normal operation, the elastic element maintains proper belt tension for power transmission, while during abnormal conditions (foreign matter entrapment or startup), it absorbs excess tension shocks, preventing over-tensioning and extending belt life.
2Area of stationary object
If toothed belts with 14 mm pitch are used to increase mate area, then the contact area is larger, but the angle of contact is small and assembly becomes difficult
Solution Approach 1:
The patent applies parameter changes by optimizing the tooth pitch parameter to 10mm, which represents an intermediate value between the conventional 8mm and 14mm pitches. This optimized parameter provides a balanced solution: the 10mm pitch delivers sufficient mate area for effective power transmission while maintaining a reasonable angle of contact that facilitates easier assembly and mounting operations compared to the 14mm pitch option.
3Ease of manufacture
If toothed belts with 8 mm pitch are used, then the assembly is easier, but the transmission power is low due to small mate area
Solution Approach 1:
The patent applies parameter changes by selecting an optimized tooth pitch of 10mm, which exceeds the conventional 8mm pitch. This parameter optimization increases the mate area between the belt and gear teeth, thereby enhancing the transmission power capability while still maintaining relatively easy assembly characteristics, thus resolving the trade-off between assembly ease and power transmission.
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 effectively prevents over-tensioning of the toothed belt, prolongs its lifespan, enhances power transmission efficiency, and simplifies the mounting process by using an elastic adjustable mechanism and optimizing tooth pitch and surface designs.
Implementation Method 1
a spring, fitted over the rod of the tension rod, with its top end biased on the swing frame
Implementation Method 2
a spring, fitted over the rod of the tension rod, with its top end biased on the swing frame
Implementation Method 3
the inner toothed surface of the toothed belt is engaged with an outer peripheral surface of the fast roller, the outer toothed surface of the toothed belt is engaged with an outer peripheral surface of the slow roller
Data Source
Figure 1
Figure 2~3
AI summary
A mill roller transmission mechanism comprises a frame (7), a fast roller (1), a slow roller (2), and a toothed belt (4). The toothed belt (4) is provided with an inner toothed surface and an outer toothed surface. The inner toothed surface of the toothed belt (4) is engaged with an outer peripheral surface of the fast roller (1). The outer toothed surface of the toothed belt (4) is engaged with an outer peripheral surface of the slow roller (2). The mill roller transmission mechanism further comprises: a tensioning seat (51), a support shaft (52), a swing frame (53), a rolling shaft (54), a tensioning wheel (3), and a press mechanism. Also disclosed is a mill employing the transmission mechanism. The tensioning mechanism is designed to be an elastic adjustable mechanism, so that when the tensioning wheel is engaged with the inner tooth wall of the toothed belt, there is a margin for buffering, and the tension of the toothed belt may be buffered through the elasticity of the tensioning mechanism. The pitch of the teeth of the toothed belt is optimized, to improve power transmission and stability. The outer peripheral surface of the tensioning wheel is optimized, to make it easy to mount the toothed belt.