Crank Circular Slider Mechanism Dynamic Balance
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Solution Overview
Problem
Current reciprocating internal combustion engines and compressors using crank linkage mechanisms are bulky, heavy, and suffer from poor balance performance due to the presence of link rods, and the introduction of dynamic balance sliders complicates the design and reduces strength, while existing solutions with dynamic balance sliders lead to increased friction and complexity.
Innovation Solution
A crank circular slider mechanism that employs a dynamic balance rotary block with a mass center configuration that replicates the effect of a dynamic balance slider without the need for a guiding rail, allowing for complete balance and increased rigidity by using a mass part with an eccentric hole to fit over the crank pin, and adjusting the mass and placement of the dynamic balance rotary block to achieve balance without additional guiding rails.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dynamic balance slider is used to improve dynamic balance, then the dynamic balance performance is improved, but the structure becomes more complex and the body strength is impaired due to the need for guiding rails
Solution Approach 1:
The invention extracts the dynamic balance function from the traditional dynamic balance slider that requires guiding rails, and transfers it to a dynamic balance rotary block that rotates with the crankshaft. This removes the need for separate guiding rail structures while maintaining the dynamic balance effect.
Solution Approach 2:
The invention merges the dynamic balance function with the crankshaft rotation system by using a dynamic balance rotary block that rotates together with the crankshaft. This combines multiple functions (crankshaft rotation and dynamic balance) into a single integrated system, reducing overall structural complexity.
2Reliability
If a dynamic balance slider is used to improve dynamic balance, then the dynamic balance performance is improved, but the body strength and rigidity are reduced due to the added guiding rails
Solution Approach 1:
The invention removes the guiding rail structures that were necessary for supporting the dynamic balance slider, thereby eliminating the structural weaknesses and maintaining the strength and rigidity of the engine body while still achieving dynamic balance through the rotary block.
3Reliability
If a dynamic balance slider is used to improve dynamic balance, then the dynamic balance performance is improved, but sliding friction increases which reduces power transformation efficiency
Solution Approach 1:
The invention replaces the sliding friction-based dynamic balance slider mechanism with a rotating dynamic balance rotary block mechanism. This substitution eliminates sliding friction between the balance component and guiding rails, thereby reducing energy loss and improving power transformation efficiency.
4Ease of operation
If a crank linkage mechanism with link rods is used, then the motion conversion function is achieved, but the machine becomes bulky and heavy
Solution Approach 1:
The invention merges the connecting rod function with the dynamic balance function by integrating the dynamic balance rotary block directly onto the crankshaft. This eliminates the need for separate connecting rods and reduces the overall weight of the mechanism while maintaining the motion conversion 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
The mechanism achieves complete dynamic balance without the need for a dynamic balance slider, maintaining simplicity and light weight, reducing friction, and allowing for easier adjustment of inertia balance, thus enhancing power transformation efficiency and structural integrity.
Implementation Method 1
A crank circular slider mechanism that employs a dynamic balance rotary block with a mass center configuration that replicates the effect of a dynamic balance slider without the need for a guiding rail, allowing for complete balance
Implementation Method 2
using a mass part with an eccentric hole to fit over the crank pin, and adjusting the mass and placement of the dynamic balance rotary block to achieve balance
Data Source
Figure 1~3
Figure 4
AI summary
The invention provides a crank circular slider mechanism which comprises a crankshaft having at least one crank pin (1-3); at least one circular slider (3) with an eccentric hole (3-1) which fits over the crank pin (1-3) of the crankshaft; at least one reciprocating element (5) with circular slider -receiving hole (5-4), which receives the circular slider (3) in a rotatable manner, the amount of the element is equal to that of the circular slider; and at least one dynamic balance rotary block with an eccentric hole (4-1) which fits over the same one crank pin (1-3) of the crankshaft" the dynamic balance rotary block and the adjacent circular slider (3) are fixed together. By means of proper selection of mounting place and mass of the dynamic balance rotary block the mechanism can convert the reciprocating inertia of the reciprocating element into the rotation inertia so as to obtain the balance effect. The invention also provides a part for the crank circular slider mechanism and an internal combustion engine and compressor using the crank circular slider mechanisn.