Battery-Powered Concrete Vibrator Head for Reduced Carrying Weight
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Solution Overview
Problem
Existing concrete vibrators powered by internal combustion engines are cumbersome for operators to carry on construction sites, necessitating a more portable and efficient power solution.
Innovation Solution
A concrete vibrator system featuring a vibrating head with a radially offset center of mass, powered by an onboard electric motor and connected via a cable to a portable power unit with a battery pack, allowing interchangeable battery packs and vibrating heads, and incorporating a motor control unit for remote operation and temperature monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If an internal combustion engine is used to power the concrete vibrator, then the vibrator can operate continuously, but the device becomes difficult for operators to carry on construction sites
Solution Approach 1:
The system is divided into separate components: a lightweight vibrating head unit that operators can easily carry, and a separate portable power unit with battery pack that provides continuous power through a connected cable, eliminating the need to carry the engine with the vibrator
Solution Approach 2:
The internal combustion engine is replaced with an electric motor powered by a battery pack, substituting a heavy mechanical power source with a lighter electrical power source that can be separately positioned and connected via cable
2Weight of moving object
If a portable power unit with battery pack is used, then the operator can easily carry the vibrating head, but the cable may limit the operator's movement range
Solution Approach 1:
A cable acts as an intermediary connection between the portable power unit and the vibrating head, allowing the operator to carry only the lightweight vibrating head while maintaining power supply and control, with the power unit positioned at a convenient location along the cable's reach
3Adaptability or versatility
If interchangeable battery packs are implemented, then the system becomes more versatile, but the connection mechanism becomes more complex
Solution Approach 1:
The battery receptacle unit is designed with a universal interface that can selectively receive different battery packs, allowing the same power unit to operate with various battery types and capacities, enhancing system versatility while maintaining a standardized connection 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 efficient and ergonomic operation of concrete vibrators by reducing the weight carried by operators, facilitating interchangeable tools, and ensuring consistent vibration frequency through remote control and temperature management.
Implementation Method 1
an onboard electric motor configured to provide torque to the shaft, thereby causing the shaft to rotate
Implementation Method 2
a shaft having a center of mass radially offset from a rotational axis of the shaft
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A concrete vibrator system comprises a vibrating head including a shaft. The shaft has a center of mass that is radially offset from a rotational axis of the shaft. The vibrating head also includes an onboard electric motor configured to provide torque to the shaft, causing the shaft to rotate. The concrete vibrator system further comprises a portable power unit including a battery pack configured to provide electrical current to the motor. A cable extends between the portable power unit and the vibrating head. The cable is configured to transmit electrical current from the battery pack to the motor and a motor control signal from the portable power unit to the motor.