LBSC-400B Semi-Automatic Nitrogen-Pressurized Core Sampling Machine for Rock Cores
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Description
Product Introduction
This machine features a double-column support structure and a fully sealed design, ensuring that the core samples obtained are more complete and accurate while promoting environmentally friendly operation. The drilling speed is regulated by an inverter, eliminating the drawbacks of the previous DC180 motor—namely, its slow speed, limited three‑speed adjustment, and the need to replace carbon brushes at regular intervals. The unit is easy to operate: simply hold down the up or down buttons to initiate automatic vertical movement. It can also be programmed via a PLC for computer‑controlled operation, making it a programmable model (optional). During core extraction, pressing the main unit’s button and selecting the desired speed enables fully automated core retrieval. Furthermore, this machine supports multiple cooling methods: water cooling, liquid nitrogen cooling, and, when performing dry drilling, an optional dust‑extraction system.
Technical specifications:
| Parameter Category | Parameter content |
| Diamond drill bit | Specifications: φ9–φ100 (standard configuration includes a φ50 mm drill bit); sampling depth ≤400 mm. The diamond is sintered from pure natural diamond, and the drive system employs a splined gear coupled with an electric motor via a flexible coupling. |
| Lifting motor | Rated voltage: 380 V, frequency: 50 Hz; specifications: 2.5 t; speed ratio: 36:1; main motor power: 2.2 kW. |
| Lifting mechanism | It employs a 25 mm diameter ball screw with a lifting mechanism, offering an accuracy of 0.01 mm, thereby ensuring core‑drilling perpendicularity and extending the drill bit’s service life. |
| Control method | Variable-frequency control, with an adjustable range of 0–50 mm. |
| Spindle speed | 1860rpm |
| Transmission and Machining Processes | The transmission assembly comprises two planetary gear sets and a module frame, forming a flexible transmission system that, when paired with a motor and coupling, achieves mechanical power transmission. The cast‑iron components are manufactured from ductile iron and undergo stress‑relief machining; the main shaft is quenched after machining (hardness HRC), with a surface finish of Ra 0.32. |
| Lubrication Configuration | Copper bushings with automatic lubrication, featuring inlaid graphite and MoS₂ solid lubricant. |
| Workbench Structure | This machine is equipped with a worktable that can move forward, backward, left, and right, enabling multi-point sampling in a single operation (an electronic handwheel for automatic adjustment of the sampling position is available as an option). The worktable can be adjusted both horizontally and vertically. |
| Dual cooling mode | One option is water cooling, while the other is liquid nitrogen cooling, which is suitable for samples such as mudstone and sandstone that cannot be cooled with water (equipped with a 10‑L aviation‑aluminum semi‑automatic pressurized liquid nitrogen tank). |
| Detection and Protection System | Equipped with an automatic overload protection circuit system. |
| Fixture type | Supports both manual clamping and pneumatic automatic clamping. |
| Electrical and Motor Configuration | Electrical components are from the Delixi brand; the motor is a domestically produced, pure copper‑wound unit compliant with national standards, featuring a high‑performance protection rating. |
Configuration List:
1. One equipment host unit
2. One set of dedicated fixtures
3. One φ50 drill bit
4. One set of specialized wrenches
5. One set of electrical circuit system
6. One set of water piping system
7. One liquid nitrogen cooling system
8. One certificate of conformity
9. One instruction manual

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