Anti-falling self-locking intelligent marking nail
By designing anti-fall-off self-locking smart markers, the problems of traditional markers easily falling off in complex geological environments and limited information recording are solved, achieving marker stability and automated information management, and improving the efficiency and accuracy of geological exploration.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- INST OF GEOMECHANICS
- Filing Date
- 2025-06-27
- Publication Date
- 2026-05-08
AI Technical Summary
Traditional markers are prone to falling off in complex geological environments, and their information recording is limited, making automated storage and identification impossible, which affects the accuracy and efficiency of geological work.
It adopts an anti-loosening self-locking design, including a stepped variable diameter nail body, threaded grooves and anti-loosening barbs, combined with magnetic connecting blocks and information storage components to enhance the fixing force and automatic information storage.
Preventing nails from slipping in complex geological environments, improving the reliability and recognizability of markers, enabling automated storage and retrieval of information, and enhancing work efficiency.
Smart Images

Figure CN224216890U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of geological marking technology, and in particular to a self-locking intelligent marking nail that prevents detachment. Background Technology
[0002] In the field of geological work, marker pins are key tools used for geological exploration and stratigraphic marking, marking geological points and recording stratigraphic information. Traditional marker pins are typically straight-bar or winged, relying mainly on hammering to fix them in the soil or rock mass to achieve their marking function. However, there are some problems with existing technologies that urgently need to be solved.
[0003] Traditional straight-bar markers, with their simple structure, rely primarily on friction between the marker and the soil for fixation. In complex geological environments, such as soft soil or weathered rock, these markers are prone to detachment due to soil loosening, leading to marker failure. While winged markers increase the contact area with the soil and improve pull-out resistance to some extent, their wing structure can cause significant disturbance to the soil during hammering, damaging its original structure and affecting marking accuracy. Furthermore, traditional markers offer limited information recording capabilities, typically requiring manual recording of marker location and related information, lacking automated storage and retrieval, which significantly reduces work efficiency in large-scale geological exploration. In addition, the color and coding markings of traditional markers have poor visibility in low-light environments (such as caves or at night), causing numerous inconveniences for on-site personnel in identification and recording, impacting the continuity and accuracy of geological work. Utility Model Content
[0004] The purpose of this invention is to provide a self-locking intelligent marker nail that prevents detachment, which can overcome the shortcomings of the existing technology.
[0005] To achieve the above objectives, a self-locking smart marker is provided, comprising a marker body, a magnetic connecting block movably connected to the upper end of the marker body, a sealing shell fixedly connected to the upper side wall of the magnetic connecting block, a marker sleeve fixedly connected to the upper side wall of the sealing shell, and an information storage component installed inside the upper side wall of the sealing shell.
[0006] The anti-detachment nail body consists of a nail top, a nail middle, and a nail bottom. A ring of anti-detachment barbs is fixedly connected to the outer side wall of the nail middle and the nail bottom. The outer side wall of the anti-detachment nail body is provided with a threaded groove.
[0007] According to the aforementioned anti-fall-off self-locking smart marker nail, the diameter of the top of the nail is set to 10mm, the diameter of the middle part of the nail is set to 8mm, and the diameter of the bottom of the nail is set to 6mm. When the anti-fall-off nail body is hammered, it forms a stepped compaction of the soil, which can better prevent the nail from slipping off.
[0008] According to the aforementioned anti-loosening self-locking smart marker nail, the groove depth of the threaded groove is 1mm. The setting of the threaded groove will induce the soil to form a spiral compression band, which will enhance the resistance to torsion and pull-out force.
[0009] According to the aforementioned anti-loosening self-locking smart marker nail, the outer wall of the anti-loosening nail body is coated with silicon carbide particles, and the particle size of the silicon carbide particles is set to 80-120μm, which increases the friction coefficient of the anti-loosening nail body from 0.3 to 0.65, effectively reducing the slippage process during long-term use.
[0010] According to the aforementioned anti-detachment self-locking smart marker nail, the main body of the anti-detachment nail is made of 304 stainless steel, which improves the service life of the anti-detachment nail body.
[0011] According to the aforementioned anti-fall-off self-locking smart marker nail, the marker sleeve is made of PVC material, the upper side wall of the marker sleeve is set with coding, the color of the marker sleeve is set to red, orange, yellow, blue, green or purple, and the outer side wall of the marker sleeve is provided with a luminous coating to distinguish various strata and ensure the recognizability under poor lighting conditions.
[0012] According to the aforementioned anti-loosening self-locking smart marker nail, the sealing shell is made of ABS material to improve sealing performance.
[0013] According to the aforementioned anti-fall-off self-locking smart marker nail, the information storage component is set as an NFC chip, specifically the NTAG213 chip, with a storage capacity of 144 bytes, used to record geological information.
[0014] This utility model has the following beneficial effects:
[0015] 1. Compared with existing technologies, the stepped variable diameter nail body design forms a stepped compaction of the soil during hammering, effectively preventing the nail from slipping off; combined with the threaded groove and elastic barbs, it induces the soil to form a spiral compression band and locks the soil in place, significantly enhancing the marking nail's resistance to torsion and pull-out, enabling it to remain stable in complex geological environments, reducing the risk of falling off due to soil loosening, and improving the reliability of the marking.
[0016] 2. Compared with existing technologies, the marking sleeve is equipped with coding and a luminous coating, which not only facilitates the differentiation of various strata but also ensures the visibility of the markings in low-light conditions. Simultaneously, the information storage component uses an NFC chip to store stratum information, enabling automated storage and retrieval of information, greatly improving work efficiency, and is particularly suitable for large-scale geological exploration projects. Attached Figure Description
[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;
[0018] Figure 1 This is a structural schematic diagram of a self-locking intelligent marking nail that prevents detachment according to this utility model;
[0019] Figure 2 This is a front view of the anti-fall-off self-locking smart marking nail of this utility model;
[0020] Figure 3 This is a top view schematic diagram of an anti-fall-off self-locking smart marking nail according to the present invention;
[0021] Figure 4 This is a cross-sectional schematic diagram of a self-locking intelligent marking nail that prevents detachment according to this utility model.
[0022] Legend:
[0023] 1. Anti-detachment nail body; 101. Nail top; 102. Nail middle; 103. Nail bottom; 104. Anti-detachment barb; 105. Threaded groove; 2. Magnetic connecting block; 3. Sealed outer shell; 4. Marking sleeve; 5. Information storage component. Detailed Implementation
[0024] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the description of the textual part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0025] Reference Figure 1-4This utility model discloses a self-locking smart marker nail designed to prevent slippage. It includes a nail body 1 with a unique structural design, comprising a 10mm diameter top section 101, an 8mm diameter middle section 102, and a 6mm diameter bottom section 103. This stepped diameter design allows each section of the nail to gradually compact the soil during hammering, creating a stepped compaction that better prevents the nail from slipping. A ring of anti-slip barbs 104 is fixedly connected to the outer walls of the middle section 102 and the bottom section 103. After the nail is hammered into the soil, the barbs 104 engage with the soil, providing additional pull-out resistance. Furthermore, the outer wall of the nail body 1 has a 1mm deep threaded groove 105. This design induces the soil to form a spiral compression band, enhancing torsional and pull-out resistance. When subjected to an external torque of 5 N·m, its torsional resistance is significantly improved compared to nails without threaded grooves.
[0026] The main body of the anti-loosening nail 1 is made of 304 stainless steel, possessing excellent corrosion resistance and mechanical strength. After salt spray testing, it guarantees a service life of at least 10 years even in harsh environments. During manufacturing, the stepped diameter shape and threaded grooves 105 are first machined on a lathe. Then, the anti-loosening barbs 104 are welded and fixed in place. The barb angle is approximately 45°, with six barbs per circle. Finally, the surface is coated with silicon carbide particles, with the particle size strictly controlled within the range of 80-120μm, increasing the nail's friction coefficient from 0.3 to 0.65, reducing slippage during long-term use.
[0027] The magnetic connector 2 is made of neodymium iron boron, a high-strength magnetic material. Its lower end face is a flat, round surface, facilitating contact with the anti-detachment nail body 1. It achieves rapid connection through magnetic attraction. In actual operation, when the marker nail needs to be hammered into the soil, simply align the magnetic connector 2 with the nail top 101 of the anti-detachment nail body 1 and gently place it. The magnetic force will automatically attract and tightly connect the two, eliminating the need for additional binding or fixing operations and greatly improving work efficiency. The sealing shell 3 is made of ABS material, possessing excellent sealing and impact resistance. Its hollow internal structure accommodates other components, and the smooth, burr-free surface effectively prevents moisture, dust, and other impurities from entering, ensuring the normal operation of internal components.
[0028] The marker sleeve 4 is made of PVC material, offering excellent flexibility and wear resistance. Its upper sidewall features a unique QR code that stores information such as the marker's installation location, installation time, and preliminary stratigraphic assessment, facilitating subsequent identification and management. The marker sleeve 4 comes in various colors, including red, orange, yellow, blue, green, and purple, allowing for selection based on different stratigraphic layers or intended uses, providing a clear visual distinction between different formations. The outer sidewall of the marker sleeve 4 also features a luminescent coating. In low-light conditions, such as inside caves or at night, the coating emits a soft glow, ensuring the marker's visibility and facilitating easy inspection and recording by staff.
[0029] The information storage component 5 uses the NTAG213NFC chip, which has a storage capacity of 144 bytes and can record stratigraphic information, such as stratigraphic age, rock type, mineral composition, and other detailed data. In practical applications, the information stored in the chip can be quickly read by bringing an NFC reading device, such as a smartphone or a dedicated card reader, close to the sealed housing 3 of the marker pin. The NFC chip is installed inside the upper side wall of the sealed housing 3, fixed with conductive adhesive, and connected to the internal circuitry to ensure the stability and reliability of data reading. Simultaneously, the material and structural design of the sealed housing 3 effectively protects the NFC chip from external environmental influences, such as rain, mud, and impacts, ensuring long-term normal operation of the chip in harsh outdoor environments.
[0030] Unless otherwise specified, the constituent units of this utility model are obtained from conventional commercial channels or manufactured by conventional methods. Their specific structure, working principle, and possible control methods and spatial arrangement methods can adopt conventional choices in the field and should not be regarded as the innovation of this utility model. This is understandable to those skilled in the art, and this utility model patent will not be further elaborated in detail.
[0031] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A self-locking, anti-fall-off smart marker pin, characterized in that, It includes an anti-detachment nail body (1), a magnetic connecting block (2) is movably connected to the upper end of the anti-detachment nail body (1), a sealing shell (3) is fixedly connected to the upper side wall of the magnetic connecting block (2), a marking sleeve (4) is fixedly connected to the upper side wall of the sealing shell (3), and an information storage component (5) is installed inside the upper side wall of the sealing shell (3). The anti-detachment nail body (1) consists of a nail top (101), a nail middle (102) and a nail bottom (103). A ring of anti-detachment barbs (104) is fixedly connected to the outer side wall of the nail middle (102) and the nail bottom (103). A threaded groove (105) is provided on the outer side wall of the anti-detachment nail body (1).
2. The anti-fall-off self-locking smart marker nail according to claim 1, characterized in that, The diameter of the top (101) of the nail is set to 10 mm, the diameter of the middle (102) of the nail is set to 8 mm, and the diameter of the bottom (103) of the nail is set to 6 mm.
3. The anti-fall-off self-locking smart marker nail according to claim 1, characterized in that, The groove depth of the threaded groove (105) is 1 mm.
4. The anti-fall-off self-locking smart marker nail according to claim 1, characterized in that, The outer wall of the anti-detachment nail body (1) is coated with silicon carbide particles, the particle size of which is set to 80-120μm, and the coating coverage of the silicon carbide particles exceeds 80%.
5. The anti-fall-off self-locking smart marker nail according to claim 1, characterized in that, The anti-detachment nail body (1) is made of 304 stainless steel.
6. The anti-loosening self-locking smart marker nail according to claim 1, characterized in that, The marking sleeve (4) is made of PVC material. The upper side wall of the marking sleeve (4) is set as a code. The color of the marking sleeve (4) is set as red, orange, yellow, blue, green or purple. The outer side wall of the marking sleeve (4) is provided with a luminous coating.
7. The anti-fall-off self-locking smart marker nail according to claim 1, characterized in that, The sealed outer shell (3) is made of ABS material.
8. The anti-fall-off self-locking smart marker nail according to claim 1, characterized in that, The information storage component (5) is configured as an NFC chip.