Drilling Device Automatic Throttle Control Engine Speed
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Solution Overview
Problem
Conventional throttle control in drilling devices optimizes for drilling efficiency but not fuel efficiency or environmental impact, as engine speed is often maintained at medium or higher speeds, leading to suboptimal fuel usage and environmental impact.
Innovation Solution
Implementing an automatic throttle control system that maintains engine speed at a low idle until specific operations are performed, increasing to medium or high speeds only when necessary, and returning to low idle when operations cease, with a computer program managing these speed changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If engine speed is maintained at medium or high speed to enable rapid increase during striking or flushing operations, then responsiveness and drilling efficiency are improved, but fuel efficiency deteriorates and environmental impact increases
Solution Approach 1:
The engine speed is made dynamically adjustable based on operational requirements. The control unit automatically adjusts engine speed between a low speed (first speed) for idle states and a high speed (second speed) for operational states, enabling the system to adapt its energy consumption to actual workload demands rather than maintaining a fixed high speed continuously
Solution Approach 2:
The invention changes the operational parameter of engine speed from a fixed medium/high value to a variable parameter that switches between two distinct levels. This parameter change allows the engine to operate at lower speeds during idle periods (improving fuel efficiency) while maintaining the capability to rapidly increase to high speeds when striking or flushing operations are required
2Loss of time
If engine speed is kept at medium speed (1800 rpm) as a baseline, then rapid acceleration to high speed (2200 rpm) is enabled, but unnecessary energy consumption occurs during idle periods
Solution Approach 1:
The control unit is pre-programmed with the logic to detect operational states and automatically adjust engine speed accordingly. This preliminary setup allows the system to proactively reduce engine speed to a low idle state when operations are not required, eliminating unnecessary energy consumption while maintaining the capability to rapidly respond when operations commence
Solution Approach 2:
The control unit continuously monitors the operational state of the drilling device and provides feedback-based automatic adjustment of engine speed. When the system detects that striking or flushing operations are required, it automatically increases engine speed to the appropriate level, and when operations cease, it reduces speed back to idle, creating a closed-loop control system that optimizes energy usage based on real-time conditions
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
A drilling device is provided with improved fuel efficiency, reduced impact on the environment, and the like. Specifically, the drilling device (1) is brought into an idling state by maintaining the engine speed at a first speed while waiting for a drilling operation. Moreover, the engine speed is increased to a second speed that is higher than the first speed when any one of a rotation operation, a feeding operation, a rod exchange operation, or a boom operation is performed for a rock drill (4). Moreover, the engine speed is increased to a third speed that is higher than the second speed when a striking operation or a flushing operation is performed, and the engine speed is decreased from the third speed to the first speed after the striking operation and the flushing operation finish. The magnitude relationship between the speeds satisfies such that first speed < second speed < third speed. For example, the first speed is a low speed (1200 rpm), the second speed is a medium speed (1800 rpm), and the third speed is a high speed (2200 rpm).