Portable Pipe Threader With BLDC Drive and Auto Lubrication
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Solution Overview
Problem
Portable pipe threaders often face inefficiencies due to the need for external power sources and manual lubrication, which can limit their portability and operational convenience.
Innovation Solution
A portable pipe threader equipped with a brushless direct current (BLDC) motor and a battery pack for self-powered operation, along with an integrated lubrication system using quick-connect couplings for efficient lubricant delivery, enhancing both power supply and lubrication management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If an AC motor with remote power source is used, then the motor can provide sufficient power for pipe threading, but the device loses portability and requires external power infrastructure
Solution Approach 1:
The patent replaces the AC motor with a brushless direct current (BLDC) motor that operates on DC power from a battery pack. This substitution enables the pipe threader to operate without external power infrastructure, significantly improving portability while maintaining sufficient threading power through the high-torque characteristics of BLDC motors.
Solution Approach 2:
The pipe threader becomes self-powered through the integration of a battery pack that provides electrical energy to the BLDC motor. This self-service capability eliminates dependence on remote power sources, allowing the device to be deployed in field conditions without external power infrastructure.
2Device complexity
If manual lubrication with hand-operated pump is used, then the device structure remains simple, but the operator must continuously monitor and manually lubricate the dies, reducing productivity
Solution Approach 1:
The lubrication system automatically monitors die temperature and applies lubricant without operator intervention. The system uses sensors to detect when lubrication is needed and activates the lubricant delivery mechanism accordingly, freeing the operator to focus on pipe threading while maintaining optimal die lubrication conditions.
Solution Approach 2:
The lubrication system incorporates temperature sensors that continuously monitor die conditions and provide feedback to the control system. Based on this feedback, the system automatically adjusts lubricant application timing and quantity, ensuring optimal lubrication without requiring manual inspection or adjustment by the operator.
3Productivity
If automated lubrication system is integrated, then the lubrication process becomes automated improving productivity, but the device complexity increases
Solution Approach 1:
The lubrication system operates autonomously by monitoring die temperature through integrated sensors and automatically activating the lubricant delivery mechanism when needed. This self-service capability provides automated lubrication without requiring complex external control systems or continuous operator intervention.
Solution Approach 2:
The control system integrates multiple functions including motor control, lubrication timing, and temperature monitoring into a single unified system. This multi-functionality reduces overall system complexity by consolidating control logic rather than requiring separate independent systems for each function.
4Ease of operation
If battery pack is used to power BLDC motor, then the device achieves portable self-powered operation, but the weight of the device increases
Solution Approach 1:
The replacement of AC motor with BLDC motor enabled the use of battery power, achieving portability. The BLDC motor's high efficiency and torque density allow for a more compact and lighter battery pack compared to what would be required for equivalent power from other DC motor types.
Solution Approach 2:
The system optimizes the battery pack configuration by selecting appropriate voltage and capacity parameters based on the specific threading applications. This parameter optimization balances weight against runtime requirements, providing sufficient power for typical field operations while minimizing unnecessary weight.
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 provides a more portable and efficient pipe threading solution by enabling self-powered operation and automated lubrication, improving the device's usability and performance in field applications.
Implementation Method 1
a brushless direct current ('BLDC') motor operable to provide torque to one of the pipe or a selected one of the pipe threading tools
Implementation Method 2
a lubrication system in selective fluid communication with the lubrication port for providing a lubricant to the pipe or the pipe threading tools
Data Source
AI summary
A portable pipe threader includes a stand upon which a pipe is supported, a carriage supported by the stand, and a plurality of pipe threading tools coupled to the carriage and selectively operable to perform work on the pipe. The portable pipe threader further includes a drive assembly mounted to the stand including a brushless direct current (“DC”) motor operable to provide torque to one of the pipe or a selected one of the pipe threading tools to rotate the pipe and the selected one of the pipe threading tools relative to each other, and a battery pack supported by the stand in selective electrical communication with the motor to provide electrical power to the motor.