Portable land boundary survey marker
By designing a portable land boundary mapping and marking device and adopting a reinforced structure and protective plate, the problems of the device becoming loose in the soil and the electronic components being easily damaged were solved, thus achieving the stability of the device and the accuracy of the data.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEILONGJIANG JIAHENG SURVEYING & MAPPING CO LTD
- Filing Date
- 2025-07-04
- Publication Date
- 2026-06-23
AI Technical Summary
Existing land boundary mapping and marking devices are prone to loosening under complex soil conditions or when subjected to external interference, and lack protection for internal electronic components, affecting the accuracy of mapping data and the normal use of the device.
A portable land boundary mapping and marking device was designed. It adopts a reinforced structure and protective plate. The device achieves mechanical self-locking fixation through the combination of threaded rod, threaded sleeve, connecting rod and reinforced plate. The device absorbs impact force through buffer plate and spring structure to protect internal electronic components.
Ensure the device is stable in the soil, protect the internal electronic components from damage, and guarantee the accuracy and integrity of the survey data.
Smart Images

Figure CN224398673U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of land boundary surveying technology, specifically a portable land boundary surveying and marking device. Background Technology
[0002] In land management and surveying, accurately defining land boundaries is crucial to clarifying land ownership, providing clear boundary ranges for landowners and users, avoiding land ownership disputes caused by ambiguous boundaries, and ensuring the legality and stability of land rights. Land boundary mapping and marking devices can visually identify the specific location of land boundaries on the ground, providing surveyors with clear reference points and ensuring the accuracy of surveying data. Under complex terrain conditions, the marking devices can clearly indicate the direction of the boundary, avoiding surveying deviations caused by visual errors or terrain obstruction.
[0003] Current land boundary mapping and marking devices, once driven into the soil of the surveyed land, are not easily reinforced. In complex soil conditions or under external interference, they are prone to loosening, affecting the accuracy of subsequent mapping and positioning work. Moreover, current devices often contain electronic components such as GPS locators, but they lack protective features. When encountering falling rocks, collisions, or impacts from other foreign objects, the internal electronic components cannot be effectively protected, easily leading to damage to the electronic components, which in turn affects the accuracy of the mapping data and the normal use of the device. Utility Model Content
[0004] To overcome the shortcomings of the prior art, this utility model proposes a portable land boundary mapping and marking device to solve the problems mentioned in the background art.
[0005] The technical solution adopted by this utility model to solve its technical problem is:
[0006] A portable land boundary mapping and marking device, comprising an upper marking pole with an internally installed GPS locator and a lower marking pole rotatably connected below the upper marking pole, and further comprising:
[0007] A positioning cone is fixed to the bottom of the lower marking rod. The lower marking rod has a cavity inside, and a reinforcing structure is movably connected inside the cavity. Fixing grooves are provided on all four sides of the surface of the lower marking rod.
[0008] A fixing plate is fixed on the upper left and right sides of the upper marking rod. The surface of the fixing plate is provided with an installation groove. A buffer plate is slidably connected to the upper part of the inner wall of the installation groove. Springs are fixed on the front and rear sides of the bottom of the buffer plate. The bottom end of the spring is fixedly connected to the bottom of the inner wall of the installation groove. A protective plate is fixed on the top of the buffer plate.
[0009] Preferably, the reinforcing structure includes a threaded rod, a threaded sleeve, a connecting rod, a movable block, and a reinforcing plate. The threaded rod is rotatably connected to the top of the positioning cone, and the top of the threaded rod is fixedly connected to the bottom of the upper marking rod body. The threaded sleeve is threadedly connected to the upper surface of the threaded rod. The connecting rod is hinged to the four sides of the surface of the threaded sleeve. The movable block is slidably connected to the four sides of the top of the positioning cone. The reinforcing plate is fixed to the surface of one side of the movable block.
[0010] Preferably, the connecting rod is inclined as a whole, and the end of the connecting rod away from the threaded sleeve is hinged to the top of the moving block.
[0011] Preferably, one side of the movable block extends into the interior of the fixed groove, and the movable block is in contact with the inner wall surface of the fixed groove, and the movable block is slidably connected to the inner wall of the fixed groove.
[0012] Preferably, multiple anti-slip strips are adhered to the lower surface of the upper marking rod, and the anti-slip strips are made of rubber.
[0013] Preferably, the fixing plate has limit grooves on both the front and rear sides, and the buffer plate has limit blocks fixed below both the front and rear sides, with the limit blocks located inside the limit grooves and slidably connected to the inner wall of the limit grooves.
[0014] Preferably, a bird-repelling needle is fixed to the top of the protective plate, and the number of bird-repelling needles is several, and they are evenly distributed above the protective plate.
[0015] Compared with existing technologies, the advantages of this portable land boundary mapping and marking device are:
[0016] First, the overall structure of this utility model is compact and lightweight, making it convenient for surveyors to carry. After the device is installed, it can be reinforced to firmly fix it in the soil, ensuring the stability of the marking device.
[0017] Secondly, this utility model has a protective function, which can shield and protect the area above it, effectively preventing foreign objects from damaging the electronic components inside the marking device, protecting the normal operation of the internal electronic components, and ensuring the accuracy and integrity of land boundary surveying data. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0019] Figure 2 This is a three-dimensional schematic diagram of the upper marking rod body in this utility model;
[0020] Figure 3 This is a cross-sectional view of the lower marking rod in this utility model;
[0021] Figure 4 This is a three-dimensional schematic diagram of the protective plate in this utility model.
[0022] The components are as follows: 1. Upper marking pole body; 2. Lower marking pole body; 3. Positioning cone; 4. Cavity; 5. Reinforcing structure; 51. Threaded rod; 52. Threaded sleeve; 53. Connecting rod; 54. Moving block; 55. Reinforcing plate; 6. Fixing groove; 7. Fixing piece; 8. Mounting groove; 9. Buffer plate; 10. Spring; 11. Protective plate; 12. Limiting groove; 13. Limiting block; 14. Anti-slip strip; 15. Bird deterrent needle. Detailed Implementation
[0023] The specific embodiments of this utility model will now be described in further detail with reference to the accompanying drawings.
[0024] The portable land boundary mapping and marking device in this specific embodiment, such as Figure 1-4 As shown, the device includes an upper marking pole 1, a lower marking pole 2 rotatably connected to the lower part of the upper marking pole 1, and a GPS locator installed inside the upper marking pole 1. A positioning cone 3 is fixed to the bottom of the lower marking pole 2, which is used to drill into the soil of the surveyed land. A cavity 4 is opened inside the lower marking pole 2, and a reinforcing structure 5 is movably connected inside the cavity 4. Fixing grooves 6 are opened on all four sides of the surface of the lower marking pole 2. Fixing plates 7 are fixed above the left and right sides of the upper marking pole 1. Mounting grooves 8 are opened on the surface of the fixing plates 7. A buffer plate 9 is slidably connected to the upper part of the inner wall of the mounting groove 8. Springs 10 are fixed to the front and rear sides of the bottom of the buffer plate 9. The bottom end of the spring 10 is fixedly connected to the bottom of the inner wall of the mounting groove 8. A protective plate 11 is fixed to the top of the buffer plate 9.
[0025] The reinforcing structure 5 includes a threaded rod 51, a threaded sleeve 52, a connecting rod 53, a movable block 54, and a reinforcing plate 55. The threaded rod 51 is rotatably connected to the top of the positioning cone 3, and the top of the threaded rod 51 is fixedly connected to the bottom of the upper marking rod body 1. The threaded sleeve 52 is threadedly connected to the upper surface of the threaded rod 51. The connecting rod 53 is hinged to the four sides of the surface of the threaded sleeve 52. The movable block 54 is slidably connected to the four sides of the top of the positioning cone 3. The reinforcing plate 55 is fixed to the surface of one side of the movable block 54. The connecting rod 53 is integrally... The body is tilted, and the end of the connecting rod 53 away from the threaded sleeve 52 is hinged to the top of the moving block 54. When the operator rotates the upper marking rod 1, the upper marking rod 1 will drive the lower threaded rod 51 to rotate. The threaded sleeve 52 on the surface of the threaded rod 51 will descend, and the connecting rod 53 on the surface of the threaded sleeve 52 will push the lower moving block 54 to move. The moving block 54 will push the reinforcing plate 55 out of the fixing groove 6, so that the reinforcing plate 55 is inserted into the soil, thus completing the reinforcement operation of the marking device.
[0026] One side of the movable block 54 extends into the interior of the fixed groove 6, and the movable block 54 is in contact with the inner wall surface of the fixed groove 6. The movable block 54 is slidably connected to the inner wall of the fixed groove 6. When the connecting rod 53 pushes the movable block 54 to move, the movable block 54 and the fixed groove 6 can guide the reinforcing plate 55 so that the reinforcing plate 55 can be moved out of the interior of the fixed groove 6 to reinforce the marking device.
[0027] Multiple anti-slip strips 14 are adhered to the lower surface of the upper marking pole 1. The anti-slip strips 14 are made of rubber. The multiple anti-slip strips 14 make it convenient for staff to rotate the upper marking pole 1 to reinforce the entire marking device.
[0028] Limiting grooves 12 are provided on both the front and rear sides of the fixing plate 7. Limiting blocks 13 are fixed on the lower sides of both the front and rear sides of the buffer plate 9. The limiting blocks 13 are located inside the limiting grooves 12 and are slidably connected to the inner wall of the limiting grooves 12. When a rock or other foreign object falls on the protective plate 11, the buffer plate 9 will squeeze the spring 10 below. The spring 10 will buffer the protective plate 11. The limiting blocks 13 also slide inside the limiting grooves 12. Through the setting of the limiting grooves 12 and the limiting blocks 13, the buffer plate 9 can be limited, so that the buffer plate 9 can only slide up and down.
[0029] A bird deterrent needle 15 is fixed to the top of the protective plate 11. There are several bird deterrent needles 15, and they are evenly distributed above the protective plate 11. By setting the bird deterrent needles 15, the surrounding birds can be driven away, preventing birds from nesting above the marking device.
[0030] Its working principle is as follows:
[0031] The staff first aligns the positioning cone (3) with the target survey point and inserts it vertically into the soil. At this time, the lower marking rod (2) and the positioning cone (3) provide initial positioning as the basic anchoring structure. Then, the operator holds the upper marking rod (1) with anti-slip strip (14) and rotates it. This rotation is transmitted to the threaded rod (51) through the rotational connection between the rods, so that the threaded rod (51) fixed at the bottom of the upper marking rod (1) rotates synchronously at the top of the positioning cone (3). The rotation of the threaded rod (51) drives the threaded sleeve (52) on its surface to move linearly downward along the threaded trajectory. The downward-moving threaded sleeve (52) applies a lateral thrust to the moving block (54) through the inclined connecting rod (53) with four hinges on the sides. Since the moving block (54) is in a sliding fit with the inner wall of the fixed groove (6), the guide structure forces the moving block to... (54) Move horizontally outward along the fixed groove (6), and the reinforcing plate (55) fixed to the moving block (54) is pushed out forcefully from the inside of the fixed groove (6). The four reinforcing plates (55) are radially wedged into the surrounding soil to form a mechanical self-locking structure. By expanding the anchoring contact surface, the pull-out resistance is significantly improved. After the mechanical reinforcement is completed, the built-in GPS locator continuously transmits coordinate data to achieve accurate geographic marking. When external rocks or foreign objects hit the protective plate (11), the impact force is transmitted to the buffer plate (9) through the protective plate (11). The buffer plate (9) compresses the spring (10) downward along the inner wall of the installation groove (8). At the same time, the limiting block (13) slides in the limiting groove (12) in a direction. The impact energy is absorbed by the elastic deformation of the spring (10). This completes the marking and positioning operation of the land boundary mapping and marking device.
[0032] It should be noted that, although specific embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these specific embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A portable land boundary mapping and marking device, characterized in that, It includes an upper marker pole (1) with a GPS locator installed inside and a lower marker pole (2) rotatably connected below the upper marker pole (1), and also includes: A positioning cone (3) is fixed at the bottom of the lower marking rod (2). The lower marking rod (2) has a cavity (4) inside, and a reinforcing structure (5) is movably connected inside the cavity (4). Fixing grooves (6) are provided on all four sides of the surface of the lower marking rod (2). Fixing plates (7) are fixed on the upper left and right sides of the upper marking rod (1). The surface of the fixing plates (7) is provided with mounting grooves (8). A buffer plate (9) is slidably connected to the upper part of the inner wall of the mounting groove (8). Springs (10) are fixed on the front and rear sides of the bottom of the buffer plate (9). The bottom end of the spring (10) is fixedly connected to the bottom of the inner wall of the mounting groove (8). A protective plate (11) is fixed on the top of the buffer plate (9).
2. The portable land boundary mapping and marking device according to claim 1, characterized in that: The reinforcing structure (5) includes a threaded rod (51), a threaded sleeve (52), a connecting rod (53), a moving block (54), and a reinforcing plate (55). The threaded rod (51) is rotatably connected to the top of the positioning cone (3), and the top of the threaded rod (51) is fixedly connected to the bottom of the upper marking rod body (1). The threaded sleeve (52) is threadedly connected to the upper surface of the threaded rod (51). The connecting rod (53) is hinged to the four sides of the surface of the threaded sleeve (52). The moving block (54) is slidably connected to the four sides of the top of the positioning cone (3). The reinforcing plate (55) is fixed to the surface of one side of the moving block (54).
3. The portable land boundary mapping and marking device according to claim 2, characterized in that: The connecting rod (53) is inclined as a whole, and the end of the connecting rod (53) away from the threaded sleeve (52) is hinged to the top of the moving block (54).
4. The portable land boundary mapping and marking device according to claim 2, characterized in that: One side of the movable block (54) extends into the interior of the fixed groove (6), and the movable block (54) is in contact with the inner wall surface of the fixed groove (6), and the movable block (54) is slidably connected to the inner wall of the fixed groove (6).
5. The portable land boundary mapping and marking device according to claim 1, characterized in that: Multiple anti-slip strips (14) are adhered to the lower surface of the upper marking rod (1), and the anti-slip strips (14) are made of rubber.
6. The portable land boundary mapping and marking device according to claim 1, characterized in that: The fixing plate (7) has a limiting groove (12) on both the front and rear sides. The buffer plate (9) has a limiting block (13) fixed below both the front and rear sides. The limiting block (13) is located inside the limiting groove (12) and is slidably connected to the inner wall of the limiting groove (12).
7. The portable land boundary mapping and marking device according to claim 1, characterized in that: Bird deterrent needles (15) are fixed on the top of the protective plate (11). There are several bird deterrent needles (15), and they are evenly distributed above the protective plate (11).