A point marking device for surveying
By designing a fixed-point marking device with a ball sleeve and locking mechanism, the problem of drill rod tilting and displacement under complex terrain and external interference in traditional surveying equipment was solved, realizing the vertical insertion and stable fixation of the drill rod, and improving the accuracy and efficiency of measurement data.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN LINGJIE WATER CONSERVANCY SURVEY DESIGN & RES CO LTD
- Filing Date
- 2025-10-20
- Publication Date
- 2026-07-21
AI Technical Summary
Traditional surveying and marking devices are easily affected by terrain, soil hardness, and operator skill when inserting the rod, resulting in the rod tilting or not being perpendicular, which affects the accuracy of measurement data. In addition, they are prone to displacement in complex terrain and wind-induced vibration environments, resulting in low efficiency.
A positioning marking device including a plug rod, a fixing sleeve, a rectangular sleeve, a locking handle, and a ball sleeve is designed. Through the gravity verticality of the ball sleeve and the locking mechanism, the plug rod is ensured to be concentric and perpendicular to the reference point. Combined with the screw sleeve and the locking handle, one-click fixing is achieved to resist external interference.
It enables vertical insertion and stable fixation of the drill rod, eliminates tilting errors, improves the accuracy and efficiency of measurement data, is suitable for rugged terrain and large-scale surveying tasks, and reduces engineering rework costs.
Smart Images
Figure CN224535107U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of surveying and mapping marking technology, specifically to a fixed-point marking device for surveying and mapping. Background Technology
[0002] In traditional surveying and marking, the manual insertion of drill rods is easily affected by terrain, soil hardness, or operator skill, resulting in the rods tilting or not being perpendicular. Tilted markers introduce angular errors, which in turn affect subsequent measurement data (such as elevation or location coordinates).
[0003] Benchmark points are often located in complex terrain (such as hard soil, rock, or near obstacles), making it difficult to directly insert drill rods and prone to positional offsets (i.e., the drill rod is not concentric with the benchmark point). Offsets accumulate errors, which can be amplified into significant deviations in large-scale surveying projects.
[0004] Meanwhile, the surveying site is often affected by wind, vibration or operational disturbances, which can cause the marking device to shift or loosen during insertion, affecting the final positional stability of the drill rod.
[0005] Traditional methods require repeated adjustments and verifications of verticality and position, which is inefficient, especially on uneven ground.
[0006] In the prior art, patent document CN221376674U discloses a point marking device for surveying. This device uses a positioning marking mechanism to fix a fixed pin to the ground, preventing displacement or tipping during positioning. Then, a marking rod is installed onto a positioning base plate through the engagement of a threaded connection and a threaded connecting platform. Next, an information tag is installed onto the marking rod via a movable collar. Rotation of the movable collar changes the orientation of the indicator tag to correspond to the direction of underground pipelines. The information tag records and displays information such as the length and depth of the underground pipelines. However, this device cannot guarantee the verticality of the marking rod after point marking, thus affecting subsequent measurement data (such as elevation or location coordinates).
[0007] Patent document CN220453283U discloses a surveying and mapping point marking device. It comprises a rotating rod, ratchet, thorn, and rotating head. When the positioning cylinder is positioned at the mark point, rotating the handle clockwise drives the ratchet, which in turn drives the rotating rod, which in turn rotates the mark rod. Because the ratchet is limited to counter-clockwise rotation by the thorn, the mark rod can be gradually driven into a hard surface by repeatedly rotating the handle in both directions. The overall structure facilitates the installation of the mark rod at the mark point. However, this device cannot guarantee the verticality of the mark rod after point marking, thus affecting subsequent measurement data. Utility Model Content
[0008] The main purpose of this invention is to provide a positioning marking device that can vertically insert a drill rod into the soil below a reference point.
[0009] To achieve the above objectives, the technical solution provided by this utility model is as follows: A point marking device for surveying includes an insertion rod, a fixed sleeve rotatably connected to the upper end of the insertion rod, a rectangular sleeve fixed to the upper end of the fixed sleeve, a rectangular rod slidably disposed inside the rectangular sleeve, the rectangular rod being perpendicular to the insertion rod, a vertical hole being formed on the rectangular rod, a fixed cylinder fixed to the upper end of the rectangular rod, the fixed cylinder being concentric with the vertical hole, an upper ball sleeve being concentrically rotatably engaged inside the fixed cylinder, a threaded sleeve being threaded to the outer side of the upper end of the fixed cylinder, a circular hole being concentrically formed at the upper end of the threaded sleeve, the upper end of the upper ball sleeve being able to pass through the circular hole after the threaded sleeve rotates downward, the upper end of the threaded sleeve being able to press the upper part of the upper ball sleeve, a connecting tube being concentrically fixed to the lower end of the upper threaded sleeve, the connecting tube passing through the vertical hole, a gap being provided between the outer wall of the connecting tube and the inner wall of the vertical hole, a lower ball sleeve being concentrically fixed to the lower end of the connecting tube; it also includes a drill rod, the drill rod passing through the upper ball sleeve, the connecting tube and the lower ball sleeve.
[0010] Specifically, the fixing sleeve is threadedly connected to a first locking handle, one end of which is pressed against the insertion rod.
[0011] Specifically, the rectangular sleeve is threaded with a second locking handle, one end of which abuts against the rectangular rod.
[0012] Specifically, the diameter of the lower ball sleeve is larger than the diameter of the lower ball sleeve.
[0013] Specifically, both the lower end of the insertion rod and the lower end of the drill rod are pointed.
[0014] Specifically, the outer edge of the drill rod contacts the inner wall of the upper ball sleeve and the inner wall of the lower ball sleeve.
[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The lower and upper ball sleeves and connecting pipes remain perpendicular to the horizontal plane under gravity, eliminating tilting errors during manual insertion of the drill rod and ensuring the absolute perpendicularity between the marked point and the reference point. When the drill rod penetrates the inner wall of the upper and lower ball sleeves, it automatically aligns with the reference point due to the constraint of the inner wall of the ball sleeve, avoiding the eccentricity problem caused by soil resistance or operational deviations in traditional methods.
[0016] 2. By rotating the insert rod and sliding and extending the rectangular rod within the rectangular sleeve, the three-dimensional position of the lower ball sleeve can be freely adjusted. Even if the reference point is located in a rock or hard soil area, the insert rod can be accurately positioned after being inserted from an adjacent soft soil area. The screw sleeve rotates down to lock the upper ball sleeve. Combined with the first and second locking handles, this achieves one-click fixing of key components, preventing displacement after adjustment.
[0017] 3. The locking mechanism (screw sleeve, first locking handle, and second locking handle) forms a rigid connection, effectively resisting external interference such as wind, impact, and vibration, ensuring that the device remains secure during drill rod insertion. This device integrates adjustment, alignment, and locking functions, eliminating the need for repeated verification of verticality and position, significantly shortening deployment time, and is especially suitable for rugged terrain or large-scale surveying tasks.
[0018] 4. This device can mark with high precision, avoiding measurement data failure caused by point deviation, and reducing engineering rework and data correction costs. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the present invention.
[0020] Figure 2 This is a bottom view of the present invention.
[0021] Figure 3 for Figure 2 Sectional view along line AA.
[0022] The parts in the attached diagram are named as follows: 1. Insert rod, 2. Fixing sleeve, 3. First locking handle, 4. Rectangular sleeve, 5. Rectangular rod, 6. Second locking handle, 7. Fixing cylinder, 8. Screw sleeve, 9. Connecting tube, 10. Lower ball sleeve, 11. Upper ball sleeve, 12. Round hole, 13. Chisel rod, 14. Vertical hole. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0024] Example 1: Refer to Figures 1-3 As shown, a point marking device for surveying includes a rod 1 with a pointed lower end. A fixed sleeve 2 is rotatably connected to the upper end of the rod 1, and a rectangular sleeve 4 is fixed to the upper end of the fixed sleeve 2. A rectangular rod 5 is slidably disposed inside the rectangular sleeve 4 and is perpendicular to the rod 1.
[0025] A vertical hole 14 is opened on the rectangular rod 5. A fixing cylinder 7 is fixed at the upper end of the rectangular rod 5. The fixing cylinder 7 is concentric with the vertical hole 14. An upper ball sleeve 11 is concentrically rotated and engaged inside the fixing cylinder 7. A threaded sleeve 8 is threadedly connected to the outer side of the upper end of the fixing cylinder 7. A circular hole 12 is concentrically opened at the upper end of the threaded sleeve 8. After the threaded sleeve 8 rotates downward, the upper end of the upper ball sleeve 11 can pass through the circular hole 12. The upper end of the threaded sleeve 8 can press the upper part of the upper ball sleeve 11. A connecting pipe 9 is concentrically fixed at the lower end of the upper threaded sleeve 8. The connecting pipe 9 passes through the vertical hole 14. A gap is provided between the outer wall of the connecting pipe 9 and the inner wall of the vertical hole 14. A lower ball sleeve 10 is concentrically fixed at the lower end of the connecting pipe 9. The diameter of the lower ball sleeve 10 is larger than that of the upper ball sleeve 10.
[0026] It also includes a drill rod 13, which passes through the upper ball sleeve 11, the connecting pipe 9, and the lower ball sleeve 10, with the lower end of the drill rod 13 being a pointed tip. The outer edge of the drill rod 13 contacts the inner wall of the upper ball sleeve 11 and the inner wall of the lower ball sleeve 10.
[0027] When it is necessary to insert the drill rod 13 into the soil below the reference point, insert the drill rod 1 into the soil on the side of the reference point where it is easy to insert, then rotate the rectangular sleeve 4 and the rectangular rod 5, and let the rectangular rod 5 slide inside the rectangular sleeve 4 until the lower ball sleeve 10 is directly above the reference point.
[0028] Under the influence of gravity, the lower ball sleeve 10, the upper ball sleeve 11, and the connecting pipe 9 remain perpendicular to the horizontal plane. After the lower ball sleeve 10 is positioned directly above the reference point, the threaded sleeve 8 is rotated and rotates downward. The upper end of the threaded sleeve 8 presses tightly against the upper part of the upper ball sleeve 11, thereby positioning the upper ball sleeve 11 and preventing the upper ball sleeve 11, the connecting pipe 9, and the lower ball sleeve 10 from swinging.
[0029] Then, the drill rod 13 is passed through the upper ball sleeve 11, the connecting pipe 9 and the lower ball sleeve 10. Since the outer edge of the drill rod 13 is in contact with the inner wall of the upper ball sleeve 11 and the inner wall of the lower ball sleeve 10, the drill rod 13 is perpendicular to the horizontal plane and concentric with the reference point. Then, the drill rod 13 is struck so that the drill rod 13 is inserted into the soil below the reference point.
[0030] After the upper ball sleeve 11, connecting pipe 9 and lower ball sleeve 10 are stabilized, when the drill rod 13 is struck downwards, the upper ball sleeve 11, connecting pipe 9 and lower ball sleeve 10 can effectively straighten the drill rod 13.
[0031] Example 2: Based on Example 1, referring to... Figure 1 and Figure 2 As shown, a first locking handle 3 is threadedly connected to the fixed sleeve 2, and one end of the first locking handle 3 is tightly pressed against the insertion rod 1.
[0032] A second locking handle 6 is threaded onto the rectangular sleeve 4, and one end of the second locking handle 6 is pressed tightly against the rectangular rod 5.
[0033] When the lower ball sleeve 10 is directly above the reference point, rotate the first locking handle 3. The first locking handle 3 presses tightly against the insertion rod 1, locking the insertion rod 1 and the fixing sleeve 2. Then rotate the second locking handle 6, locking the rectangular sleeve 4 and the rectangular rod 5. This allows for easy positioning of the upper ball sleeve 11, connecting pipe 9, and lower ball sleeve 10, facilitating the insertion of the drill rod 13 through the upper ball sleeve 11, connecting pipe 9, and lower ball sleeve 10 into the soil below the reference point.
[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A point marking device for surveying, comprising a rod (1), characterized in that, A fixed sleeve (2) is rotatably connected to the upper end of the insertion rod (1). A rectangular sleeve (4) is fixed to the upper end of the fixed sleeve (2). A rectangular rod (5) is slidably arranged inside the rectangular sleeve (4). The rectangular rod (5) is perpendicular to the insertion rod (1). A vertical hole (14) is opened on the rectangular rod (5). A fixed cylinder (7) is fixed to the upper end of the rectangular rod (5). The fixed cylinder (7) is concentric with the vertical hole (14). An upper ball sleeve (11) is concentrically rotatably engaged inside the fixed cylinder (7). A threaded sleeve (8) is threaded to the outer side of the upper end of the fixed cylinder (7). A round hole is concentrically opened at the upper end of the threaded sleeve (8). (12) After the screw sleeve (8) rotates downward, the upper end of the upper ball sleeve (11) can pass through the round hole (12). The upper end of the screw sleeve (8) can squeeze the upper part of the upper ball sleeve (11). The lower end of the upper screw sleeve (8) is concentrically fixed with a connecting pipe (9). The connecting pipe (9) passes through the vertical hole (14). There is a gap between the outer wall of the connecting pipe (9) and the inner wall of the vertical hole (14). The lower end of the connecting pipe (9) is concentrically fixed with a lower ball sleeve (10). It also includes a drill rod (13). The drill rod (13) passes through the upper ball sleeve (11), the connecting pipe (9) and the lower ball sleeve (10).
2. The point marking device for surveying according to claim 1, characterized in that, The fixing sleeve (2) is threadedly connected to a first locking handle (3), one end of which is pressed against the insertion rod (1).
3. The point marking device for surveying according to claim 1, characterized in that, The rectangular sleeve (4) is threaded with a second locking handle (6), one end of which abuts against the rectangular rod (5).
4. The point marking device for surveying according to claim 1, characterized in that, The diameter of the lower ball sleeve (10) is larger than the diameter of the lower ball sleeve (10).
5. The point marking device for surveying according to claim 1, characterized in that, Both the lower ends of the insertion rod (1) and the lower ends of the drill rod (13) are pointed.
6. The point marking device for surveying according to claim 1, characterized in that, The outer edge of the drill rod (13) is in contact with the inner wall of the upper ball sleeve (11) and the inner wall of the lower ball sleeve (10).