When should you not use a hammer drill?
According to relevant regulations, the use of impact drills must comply with the following time restrictions:
- Weekdays: Prohibited from 8:30 AM to 12:00 PM and from 2:00 PM to 6:00 PM (specific times may vary based on property management or local policies).
- Weekends and holidays: Typically prohibited all day.
Notes:
- Property management restrictions: Some residential complexes or office buildings may have additional regulations regarding renovation hours. Confirm with the property management in advance.
- Noise control: Even during permitted hours, ensure noise levels do not disturb others.
If use during prohibited hours is necessary, it is advisable to negotiate with the property management in advance or opt for low-noise alternatives (e.g., using an electric drill instead).
Unsuitable Geological Conditions for Impact Drills
Impact drills are unsuitable for geological conditions involving extremely hard rock, excessive depth, or overly soft soil.
I. Working Principle and Applicable Range of Impact Drills
An impact drill is a rock and soil drilling tool that utilizes impact force to drive a drill bit into the ground, then retracts it to clear debris from the borehole. It is suitable for moderately hard rock and soil layers, commonly used in geological exploration, construction projects, bridge engineering, and highway engineering.
II. Unsuitable Geological Conditions for Impact Drills
Although impact drills have certain advantages, they are not suitable for all geological conditions. Below are some unsuitable scenarios:
- Extremely hard rock: When the rock is too hard, the impact drill cannot penetrate the layer. Excessive hardness may even damage the drill bit and mechanical components.
- Excessive drilling depth: As depth increases, the impact force diminishes, making it difficult for the drill bit to penetrate rock or soil, and deep drilling becomes challenging.
- Overly soft soil: When encountering loose or low-density soil, the drill bit may become stuck, making it difficult to retract the bit and drill rod.
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