Adjustable Eccentric Vibrator for Soil Compaction Intensity
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Solution Overview
Problem
Existing vibration devices for soil compaction are not versatile and require multiple devices with different eccentric masses to handle varying soil types, leading to high costs and downtime.
Innovation Solution
A vibration device with a rotating member having a first and second body hinged along parallel axes, adjustable by linear actuators to vary the center of mass, allowing adjustable vibration intensity without replacing the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple vibration devices with different eccentric masses are used to handle varying soil types, then the vibration intensity can be adapted to different soil conditions, but the cost increases and device replacement time is required
Solution Approach 1:
The patent applies the dynamics principle by making the eccentric mass adjustable rather than fixed. The rotating member comprises a first body and a second body hinged along a second axis, allowing the center of mass to be moved relative to the rotation axis by rotating the second body. This dynamic adjustment capability enables a single device to adapt to different soil conditions by varying vibration intensity, eliminating the need for multiple fixed-mass devices and reducing both complexity and replacement time.
2Adaptability or versatility
If multiple vibration devices with different eccentric masses are used to handle varying soil types, then the vibration intensity can be adapted to different soil conditions, but downtime increases due to device replacement
Solution Approach 1:
The dynamic adjustment mechanism allows operators to change vibration intensity in-field by rotating the second body relative to the first body, moving the center of mass to desired positions. This eliminates the need to replace entire vibration devices when soil conditions change, significantly reducing downtime and maintaining continuous operation.
3Device complexity
If the eccentric mass is fixed in the rotating member, then the device structure is simpler, but the vibration intensity cannot be adjusted for different soil types
Solution Approach 1:
The rotating member is designed with a hinged second body that can rotate relative to the first body, dynamically changing the center of mass position. This dynamic structure, while more complex than a fixed mass design, provides the necessary adaptability to adjust vibration intensity for different soil types. The hinge connection and rotation capability allow flexible center of mass repositioning without requiring complete device replacement.
Solution Approach 2:
The rotating member with adjustable center of mass serves multiple functions: it can operate with different eccentric masses for different soil conditions, and the same physical structure adapts to various vibration intensity requirements. This multi-functionality eliminates the need for multiple specialized devices, reducing overall system complexity despite the added adjustment mechanism.
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 adjustable vibration intensity for different soil types without replacing the device, reducing maintenance costs and downtime.
Implementation Method 1
The rotating member comprises a shaft driven in rotation by an actuator, and an eccentric body fixed on the shaft so that the relative centre of mass lies outside the rotation axis: in this way, the rotation of the rotating member results in a corresponding circular vibration of the vibrating frame and therefore also of the tool connected to it.
Implementation Method 2
said second actuation means comprise a linear actuator having a first end connected to said first body and a second end connected to said second body
Data Source
AI summary
A vibration device connectable to an operating machine for a relative movement thereof. the device comprising support means couplable to the operating machine, a vibrating unit comprising a vibrating frame supported by the support means and designed to support a tool, and a rotating member supported by the vibrating frame and which can be operated in rotation relative to the vibrating frame around a first axis by first actuation means to generate a vibration of the tool, the rotating member having a respective centre of mass; the rotating member comprising a first body and a second body hinged to the first body along a second axis substantially parallel to the first axis, and second actuation means designed to rotate the second body relative to the first body around the second axis to move the centre of mass relative to the first axis.