Flexible Elastomeric Sheath for Drill Cooling and Weather Protection
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Solution Overview
Problem
Drills used for drilling railway rails face challenges in operating safely in bad weather conditions, as water, sand, and other particles can damage the drill and disrupt operations.
Innovation Solution
A protective sheath made of flexible elastomeric material, impermeable to liquids, is designed to encase the drill, featuring a ventilation channel with downward-facing inlet openings to ensure cooling while keeping the drill dry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the drill is operated in bad weather conditions, then productivity is maintained, but the reliability deteriorates due to water and particles damaging the drill
Solution Approach 1:
The patent applies a flexible protective sheath made of elastomeric material that envelops the drill components (motor, battery, reduction gear) to protect them from water and particles. The sheath is impermeable to liquids and can be easily applied and removed, allowing continuous operation in bad weather while maintaining component protection.
2Reliability
If the drill is covered to protect from rain, then reliability is improved, but the cooling system deteriorates due to blocked air intake
Solution Approach 1:
The protective sheath incorporates localized openings positioned at the lower part of the sheath that allow air intake for motor cooling while preventing water entry. The downward orientation of these openings enables them to admit air while excluding rain and particles, thus maintaining both protection and cooling functions simultaneously.
3Reliability
If a rigid protective cover is used, then protection from weather is improved, but ease of operation deteriorates due to difficulty in application and removal
Solution Approach 1:
The patent employs a flexible, dynamic sheath made of elastomeric material that can be easily stretched over and removed from the drill components. This flexibility allows rapid application and removal without complex fastening mechanisms, maintaining ease of operation while providing effective weather protection.
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 sheath effectively protects the drill from rain and other environmental hazards, allowing safe operation in adverse weather conditions without compromising the cooling system.
Implementation Method 1
the sheath forms a ventilation channel with one or more first inlet openings formed in an outer surface of the sheath and facing downwards, and with an inner ventilation section, which is concave so as not to adhere to the motor, and is open towards the inside of the sheath so as to communicate cooling air from the inlet openings to a cooling system of the drill
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A protective sheath (24) applicable to a drill (1): wherein the sheath (24) is made of flexible elastomeric material, impermeable to liquids, and has a tubular shape with a front opening (25) and a rear opening (26), so as to be able to be slotted over an electric motor (2) and over at least a part of the battery (6) of the drill (1) to protect them, wherein the sheath (24) forms a ventilation channel (27) with an inlet opening (28) facing downwards, and an inner ventilation section (29) which is concave and open towards the inside of the sheath (24) so as to communicate cooling air from the inlet opening (28) to a cooling system of the drill (1).