Electric SPT Soil Dynamic Standard Heavy Penetrometer
Working principle
Dynamic probing: Using an electric hammer device to drive the probe into the soil, record the penetration resistance, and then analyze the soil characteristics.
Electric Drive: Powered by an electric motor, ensuring stable and controllable hammering force.
Main components
Probe: usually conical in shape, used to penetrate soil and measure resistance.
Electric hammering device: provides hammering force to push the probe into place.
Data collection system: records penetration depth and resistance, and some devices can display data in real time.
Control unit: Adjust the hammering frequency and force to ensure consistent testing conditions.
Bracket and guide rod: Keep the probe vertically inserted to ensure accurate data.
Application Fields
Geological exploration: Evaluating soil mechanical properties to provide a basis for engineering design.
Construction engineering: Testing the bearing capacity of the foundation to ensure construction safety.
Road and bridge construction: Evaluate the stability of roadbeds and bridge foundations.
Environmental engineering: monitoring soil pollution and stability.
Advantages
Efficient: Quickly obtain soil mechanics data.
Portable : Designed to be lightweight and suitable for fieldwork.
Accurate: Dynamic Cone Penetrometer electric control ensures consistent hammering force and reliable data.
Multi functional: Spt suitable for various soil types and engineering requirements.
Parameter
| hammer quality | 63.5kg |
| drop distance | 760mm |
| Speed | 15 strike/minute, Plus or minus 2 / min |
| Dimension | L1.3m*W2.1m*H2.1m |
| feeler lever outside diameter | 42mm |
| Product name | dynamic heavy penetrometer |
| Power supply | 380V 50Hz |
| Application | Soil test |
| Weight | 300kg |
FAQ（Frequently Asked Questions）
Standards&Compliance
Q1: What domestic and international geological survey standards does this equipment comply with?
A: This device adopts a multifunctional integrated design, fully complying with mainstream probing and marking standards at home and abroad, and supports one click switching or component replacement:
Standard Penetration Test (SPT): Meets ASTM D1586, BS 1377-9, and the Chinese national standard GB 50021 "Code for Investigation of Geotechnical Engineering".
Heavy dynamic penetration testing (DPT): meets EN ISO 22476-2 (European standard) and domestic heavy dynamic penetration testing standards (such as 63.5 kg hammer impact standard).
Before leaving the factory, it undergoes energy efficiency testing to ensure that the transmission of hammer energy meets international standards.
Q2: Are the weight and drop distance of the piercing hammer of the equipment standard? Can it be adjusted?
A: Yes, the equipment is manufactured strictly according to the standards. The core parameters are as follows:
Standard penetration/heavy probing mode: hammer weight of 63.5 kg, standard drop distance of 760 mm.
Configuration flexibility: The device adopts a modular through hammer design. According to different testing standards (such as light, medium, and super heavy probing), it is possible to quickly achieve multi-purpose use of one machine by increasing or decreasing counterweights (such as 10 kg, 28 kg, 50 kg, 63.5 kg, etc.) and adjusting the hydraulic/electric lifting stroke switch.
Electric and Automation Technology (Automation&Performance)
Q3: Why choose electric/fully automatic piercing hammer? What are the advantages compared to traditional manual or mechanical rope pulling?
A: Traditional manual or mechanical rope pulling has problems such as unstable rope friction, inaccurate drop distance, and easy fatigue of personnel, which seriously affect the accuracy of N value. Absolute precision in falling distance: The electric automatic release mechanism (automatic decoupling/automatic hoisting system) ensures that each lift reaches a precise 760 mm and achieves free fall, eliminating the energy loss caused by rope friction. Constant frequency: The hammering frequency remains stable at the standard requirement of 15-30 times per minute to avoid human interference. Liberate labor: Experimenters only need to operate on the control panel without manually pulling ropes and counting.
Q4: Field geological exploration usually does not have mains power. How can this electric equipment be powered?
A: We have taken into account the extremely harsh field working environment and provide multiple flexible power solutions:
We have equipped a portable generator with high performance and low fuel consumption, which is sufficient to provide stable power for the electric system.
On site Operations and Data Management
Q5: How does the device record the number of hammer blows? Do we need manual counting?
A: The device is equipped with an intelligent integrated counter (or data logger). Using industrial grade proximity switches or photoelectric sensors, the system automatically increments by 1 for each drop of the hammer. The high-end version supports intelligent data terminals, which can not only record the number of hammer blows, but also automatically record the required number of hammer blows (N value) for every 10cm or 30cm driven through displacement sensors. The data is displayed in real-time on a waterproof touch screen.
Q6: What is the wear resistance of the drill rod and contact probe? Is it easy to deform when encountering hard soil layers?
A: Our drill rods and markers are made of high-strength alloy steel (such as 42CrMo or high-quality geological steel pipes), which have undergone overall quenching and surface intermediate frequency quenching processes.
It has extremely high bending strength and impact toughness, and even with continuous hammering in dense sand layers, gravel soil, or strongly weathered rock layers, the drill pipe joint is not easily deformed, broken, or slipped.
The touch probe (cone head) is made of ultra-high hardness wear-resistant alloy, which has a service life 3-5 times longer than ordinary carbon steel.
Mobility&Durability for handling and adaptability to outdoor environments
Q7: This equipment is so heavy (the hammer alone weighs 63.5kg), how can it be transported in mountainous areas or muddy roads?
A: We have designed three types of frame structures for different terrains:
Split portable: The mast, base, power source, and hammer can be quickly disassembled, and the weight of each piece is within the range of manual handling, suitable for mountainous areas without roads.
Double wheel manual push type (wheeled): equipped with large-sized off-road inflatable tires, it can be easily pushed and moved by two people on grass, sand or muddy roads.
After sales&Consumables
Q8: Which components of this high-frequency and severe vibration equipment are considered vulnerable parts?
A: Frequent metal impacts pose a significant challenge to equipment, and its main vulnerable parts include:
The spring and claw of the automatic decoupling mechanism.
Raise the steel wire rope or chain of the system.
Penetration cone head and drill pipe joint thread.
Rubber shock absorber washer at Anvil.