Cylinder-Driven Lifting Mechanism for Compaction Machine
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Solution Overview
Problem
The existing winch-type lifting mechanisms in compaction machines are costly to produce and maintain, prone to damage from repeated impacts, and have complex control systems, leading to high maintenance costs and reliability issues.
Innovation Solution
A cylinder-driven lifting mechanism using a combination of a cylinder, fixed pulley set, movable pulley set, and rope, which allows for extension and retraction movements to lift and drop a compaction hammer, simplifying the structure and reducing the risk of damage through a perpendicular movement of the cylinder and pulley axis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a winch-type lifting mechanism is used, then the compaction machine can lift the compaction hammer, but the production and manufacturing costs increase significantly
Solution Approach 1:
The patent extracts and removes the complex winch-type lifting mechanism (including motor, speed reducer, clutch, brake) and replaces it with a simple hydraulic cylinder directly connected to the compaction hammer. This extraction eliminates unnecessary components while maintaining the core lifting function, thereby reducing manufacturing costs and simplifying the structure.
Solution Approach 2:
The patent employs a hydraulic cylinder as a simple, cost-effective replacement for the expensive winch mechanism. The cylinder is a straightforward component with fewer parts, lower manufacturing cost, and easier replacement if needed, embodying the principle of using simpler, more economical components.
2Ease of operation
If a winch-type lifting mechanism is used, then the compaction hammer can be lifted and dropped, but the control system becomes very complicated
Solution Approach 1:
The patent removes the complex control system (clutch, brake, speed reducer) associated with winch-type mechanisms and replaces it with direct hydraulic control. The hydraulic cylinder responds simply to pressure changes, eliminating the need for complex mechanical control components and simplifying the overall control architecture.
3Productivity
If a winch-type lifting mechanism is used, then the compaction machine can operate, but maintenance costs increase due to frequent damage
Solution Approach 1:
The patent extracts and eliminates the fragile components of the winch mechanism (clutch, brake, motor, speed reducer) that are prone to damage from repeated impacts. By using a robust hydraulic cylinder directly connected to the hammer, the system becomes more resilient to impact forces, reducing maintenance frequency and costs.
4Speed
If the spool rotates at high speed during ramming, then the steel wire rope can be released quickly, but the spool shakes and causes internal oil leakage
Solution Approach 1:
The patent removes the spool component entirely from the lifting mechanism, replacing it with a hydraulic cylinder that extends and retracts linearly. This eliminates the rotational motion and associated shaking problems, while still enabling quick release of the compaction hammer through rapid cylinder extension.
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 cylinder-driven lifting mechanism reduces production and maintenance costs, enhances reliability, and minimizes energy loss and component damage, providing a more efficient and compact compaction process.
Implementation Method 1
a cylinder, a fixed pulley set, a movable pulley set and a rope... The cylinder is configured to perform extension and retraction movements
Implementation Method 2
The rope is wound on the fixed pulley set and the movable pulley set and is then connected to the compaction hammer
Implementation Method 3
a fixed pulley set, a movable pulley set and a rope... When the cylinder performs extension and retraction movements, the movable pulley set moves with the cylinder
Data Source
AI summary
In one aspect of the disclosure, a cylinder-driven lifting mechanism of a compaction machine includes a cylinder having a first end and a second end, a fixed pulley set, a movable pulley set, a rope having a head end, and a tail end configured to connect a compaction hammer. The first end of the cylinder is connected to a vehicle body of the compaction machine and the second end of the cylinder is connected to the movable pulley set. The rope is wound on the fixed pulley set and the movable pulley set and is then connected to the compaction hammer. When the cylinder performs extension and refraction movement, the movable pulley set moves with the cylinder, the distance between the movable pulley set and the fixed pulley set increases or decreases, and the compaction hammer connected to the tail end of the rope is lifted up or dropped respectively.