A level for surveying engineering
By using a mechanical structure consisting of bearings, a rotating ring, a connecting disc, and a spherical counterweight, combined with the design of an eccentric wheel and a lifting plate, the high cost and calibration problems of existing levels have been solved, achieving low-cost automatic calibration and angle locking, thus improving measurement accuracy and ease of use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGRAO RUIDA SURVEYING & DESIGN CO LTD
- Filing Date
- 2025-06-19
- Publication Date
- 2026-05-29
AI Technical Summary
Existing surveying and mapping engineering levels are expensive, difficult to maintain, and require stringent calibration environments. Ordinary users cannot easily equip themselves with professional calibration platforms, which affects measurement accuracy and ease of use.
The mechanical structure employs bearings, a rotating ring, a connecting disc, and a spherical counterweight. It utilizes gravity to automatically calibrate the laser level, and combines the mechanical locking of the eccentric wheel and the lifting plate to achieve automatic calibration and angle locking of the level, thus avoiding the high cost of sensors and the need for a professional calibration platform.
It achieves low-cost automatic calibration and angle locking, improves measurement accuracy and operational stability, reduces production and maintenance costs, and enhances convenience and practicality.
Smart Images
Figure CN224301702U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of surveying and mapping engineering equipment technology, and more specifically, it relates to a level for surveying and mapping engineering. Background Technology
[0002] In the field of surveying and mapping engineering, a level is an indispensable key measuring tool, mainly used to accurately measure whether a plane is horizontal or vertical, providing basic data support for topographic mapping, building construction, equipment installation, and other work. Whether it is the foundation calibration of high-rise buildings or the flatness inspection of roads and bridges, the accurate measurement of a level is relied upon to ensure the quality of the project. The accuracy of its measurement results directly affects the construction precision and final effect of the entire project, playing a vital role in ensuring the safety and reliability of the project.
[0003] However, existing surveying and mapping levels have many drawbacks in practical applications. Currently, most levels use accelerometers for horizontal or vertical detection. These sensors are not only expensive to purchase, but also difficult to repair once they malfunction, often requiring complete replacement, which significantly increases the production and maintenance costs of the levels. In addition, these levels have stringent requirements for the calibration environment, needing to be calibrated regularly on an absolutely level calibration platform. However, ordinary users rarely have access to professional calibration platforms, making level calibration extremely difficult and unable to guarantee measurement accuracy in a timely manner. This seriously affects the convenience and stability of the levels in practical use, and innovative technical solutions are urgently needed to solve these problems. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] In view of the above situation and to overcome the defects of the prior art, this utility model provides a level for surveying engineering, which aims to solve the problems in the background art.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: A level for surveying engineering, comprising a housing, characterized in that: a rotating ring is rotatably connected to the inner wall of the housing via a bearing and a first rotating shaft; a connecting disc is rotatably connected to the inner wall of the rotating ring via a bearing and a second rotating shaft; a laser level body is rotatably connected to the upper surface of the connecting disc via an annular groove; a spherical counterweight is fixedly connected to the lower surface of the connecting disc via a connecting column; a limiting column is fixedly connected to the inner lower wall of the housing; a lifting plate is slidably connected to the outer surface of the limiting column; a top column is fixedly connected to the middle of the lifting plate; a rubber top block is fixedly connected to the upper surface of the top column; a lifting rod is fixedly connected to the upper surface of one end of the lifting plate; a sliding block is fixedly connected to the outer surface of the upper end of the lifting rod; a pushing block is fixedly connected to one end of the sliding block; a third rotating shaft is fixedly connected to the outer surface of the housing; an eccentric wheel is fixedly connected to the outer surface of the third rotating shaft; and a handle is fixedly connected to the upper surface of the eccentric wheel.
[0008] The present invention is further provided with a support foot on the lower surface of the outer shell, and the support foot is provided in three parts and evenly distributed in a ring array.
[0009] The present invention is further configured such that there are two first rotating shafts arranged symmetrically, and two second rotating shafts arranged symmetrically, the line connecting the two first rotating shafts and the line connecting the two second rotating shafts are perpendicular to each other, and the center of the spherical counterweight is located at the intersection of the line connecting the two first rotating shafts and the line connecting the two second rotating shafts.
[0010] The present invention is further configured such that a spring is fixedly connected to the middle of the inner lower wall of the outer shell, the upper end of the spring abuts against the inner top wall of the top column, and the upper surface of the rubber top block is provided with a groove adapted to the spherical counterweight.
[0011] The present invention is further configured such that a groove is formed on the outer surface of the outer shell, and the outer surface of the sliding block is slidably connected to the inner wall of the groove.
[0012] The present invention is further configured such that the outer surface of the pushing block is slidably connected to the outer surface of the eccentric wheel, and the maximum eccentricity of the eccentric wheel is set at a position away from the lower end of the handle.
[0013] (III) Beneficial Effects
[0014] Compared with the prior art, this utility model provides a level for surveying engineering, which has the following beneficial effects:
[0015] 1. This surveying engineering level, through the arrangement of bearings, a rotating ring, a second rotating shaft, a connecting disc, and a spherical counterweight, enables the level to be automatically calibrated. The coordinated arrangement of the bearings, rotating ring, second rotating shaft, and connecting disc allows the connecting disc to rotate 360 degrees during use. Furthermore, through its interaction with the spherical counterweight, the weight of the counterweight keeps the connecting disc horizontal, thus ensuring the laser level itself remains vertical. This structure significantly reduces production and maintenance costs, achieving the goal of facilitating automatic calibration while saving costs.
[0016] 2. This surveying engineering level, through the arrangement of a lifting plate, top column, spring, lifting rod, push block, and eccentric wheel, enhances its practicality. The coordinated arrangement of the lifting plate, top column, spring, lifting rod, push block, and eccentric wheel allows for locking the angle of the laser level body during use, preventing wobbling caused by external factors. Furthermore, this structure allows for easy locking of the laser level body's angle simply by carrying the device by the handle, placing it in the designated position, and then tilting the handle to one side, greatly increasing the device's versatility. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0018] Figure 2 This is a schematic diagram of the front cross-section of the present invention;
[0019] Figure 3 This utility model Figure 1 Schematic diagram of the structure at point B;
[0020] Figure 4 This is a top view of the rotating ring and connecting disk of this utility model.
[0021] Figure 5 This is a schematic diagram of the structure of the top column and lifting rod of this utility model;
[0022] Figure 6 This utility model Figure 2 Schematic diagram of the structure at point C;
[0023] Figure 7 This utility model Figure 2 A schematic diagram of the structure at point A in the middle.
[0024] In the diagram: 1. Outer shell; 2. Support leg; 3. Bearing; 4. First rotating shaft; 5. Rotating ring; 6. Second rotating shaft; 7. Connecting disc; 8. Annular groove; 9. Laser level body; 10. Connecting column; 11. Spherical counterweight; 12. Limiting column; 13. Lifting plate; 14. Top column; 15. Rubber top block; 16. Spring; 17. Lifting rod; 18. Sliding block; 19. Groove; 20. Pushing block; 21. Third rotating shaft; 22. Eccentric wheel; 23. Handle. Detailed Implementation
[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0026] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.
[0027] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.
[0028] Please see Figure 1 , Figure 2 , Figure 4 and Figure 6 A level for surveying engineering includes a housing 1. The lower surface of the housing 1 is provided with three legs 2 arranged in a circular array. The inner wall of the housing 1 is rotatably connected to a rotating ring 5 via a bearing 3 and a first rotating shaft 4. The inner wall of the rotating ring 5 is rotatably connected to a connecting disk 7 via a bearing 3 and a second rotating shaft 6. There are two first rotating shafts 4 arranged symmetrically, and two second rotating shafts 6 arranged symmetrically. The line connecting the two first rotating shafts 4 and the line connecting the two second rotating shafts 6 are perpendicular to each other. The upper surface of the connecting disk 7 is rotatably connected to a laser level body 9 via an annular groove 8. The lower surface of the connecting disk 7 is fixedly connected to a spherical counterweight 11 via a connecting column 10. The center of the spherical counterweight 11 is located at the intersection of the lines connecting the two first rotating shafts 4 and the two second rotating shafts 6.
[0029] Specifically, the inner wall of the outer shell 1 is connected to the first rotating shaft 4 via a bearing 3 to a rotating ring 5. The rotating ring 5 is connected to the second rotating shaft 6 via a bearing 3 to a connecting disk 7, forming a dual-axis rotation structure. The lines connecting the two first rotating shafts 4 and the two second rotating shafts 6 are perpendicular. The spherical counterweight 11 is fixed to the lower surface of the connecting disk 7 via a connecting column 10, with its center located at the intersection of the two axes. The laser level body 9 is rotatably connected to the connecting disk 7 via an annular groove 8. The bottom of the outer shell 1 is provided with three annular array of support legs 2. When the device is placed, the spherical counterweight 11 drives the connecting disk 7 to rotate due to gravity. Through the dual-axis rotation structure (first rotating shaft 4 and second rotating shaft 6), the connecting disk 7 is automatically adjusted to a horizontal state, thereby driving the laser level body 9 to remain vertical. This structure uses the principle of gravity to achieve automatic calibration, eliminating the need for an acceleration sensor and avoiding the high cost and maintenance difficulties of traditional sensors. The mechanical structure ensures calibration accuracy and significantly reduces production and maintenance costs.
[0030] Please see Figures 1-7 The inner lower wall of the outer shell 1 is fixedly connected to a limiting post 12. A lifting plate 13 is slidably connected to the outer surface of the limiting post 12. A top post 14 is fixedly connected to the middle of the lifting plate 13. A rubber top block 15 is fixedly connected to the upper surface of the top post 14. A spring 16 is fixedly connected to the middle of the inner lower wall of the outer shell 1. The upper end of the spring 16 abuts against the inner top wall of the top post 14. The upper surface of the rubber top block 15 is provided with a groove that matches the spherical counterweight 11. A lifting rod 17 is fixedly connected to the upper surface of one end of the lifting plate 13. The outer surface of the upper end of the lifting rod 17 is... A sliding block 18 is fixedly connected to the surface of the outer shell 1. A groove 19 is opened on the outer surface of the outer shell 1. The outer surface of the sliding block 18 is slidably connected to the inner side wall of the groove 19. A push block 20 is fixedly connected to one end of the sliding block 18. A third rotating shaft 21 is fixedly connected to the outer surface of the outer shell 1. An eccentric wheel 22 is fixedly connected to the outer surface of the third rotating shaft 21. A handle 23 is fixedly connected to the upper surface of the eccentric wheel 22. The outer surface of the push block 20 is slidably connected to the outer surface of the eccentric wheel 22. The maximum eccentricity of the eccentric wheel 22 is set at a position away from the lower end of the handle 23.
[0031] Specifically, the limiting post 12 at the bottom of the inner shell 1 is slidably connected to the lifting plate 13. The lifting plate 13 is connected to the rubber top block 15 via the top post 14. The spring 16 abuts against the top post 14 and the bottom of the outer shell 1. The lifting plate 13 is connected to the sliding block 18 via the lifting rod 17. The sliding block 18 slides along the sliding groove 19 of the outer shell 1 and is connected to the pushing block 20. The pushing block 20 abuts against the outer surface of the eccentric wheel 22. The eccentric wheel 22 is connected to the outer shell 1 via the third rotating shaft 21. The handle 23 is fixed on the eccentric wheel 22, and its maximum eccentricity is far away from the lower end of the handle 23, allowing for easy lifting. When the handle 23 is placed, the eccentric wheel 22 pushes the push block 20 to lower the lifting plate 13, and the rubber top block 15 separates from the counterweight, allowing the connecting disc 7 to rotate for calibration. After the position is determined, the handle 23 is turned to one side, the eccentric wheel 22 rotates to reduce its eccentricity, and the push block 20 drives the lifting plate 13 to rise under the action of the spring 16. The rubber top block 15 is embedded in the counterweight groove, locking the position of the connecting disc 7. This structure prevents shaking caused by external interference through mechanical locking, eliminating the need for a professional calibration table and improving the convenience and stability of on-site use.
[0032] In summary, when using the entire device: directly lift the handle 23 to place the device in the designated position. The eccentric wheel 22 pushes the push block 20 to the lowest point, and the upper surface of the rubber top block 15 disengages from the lower surface of the spherical counterweight 11, allowing the connecting disc 7 to shift at any angle inside the outer casing 1. The spring 16 pushes the lifting plate 13, top column 14, lifting rod 17, sliding block 18, and push block 20 upward, ensuring that the upper surface of the push block 20 is always in contact with the outer surface of the handle 23. This also causes the rubber top block 15 to rise. The spherical counterweight 11 then drives the connecting disc 7 and the laser level. The body 9 remains horizontal. After the position is determined, the handle 23 is turned to one side. At this time, the eccentric wheel 22 rotates, and the eccentricity at the contact point with the push block 20 gradually decreases. The upper surface of the rubber top block 15 abuts against the lower surface of the spherical counterweight 11, thereby preventing the spherical counterweight 11 from moving. This allows for angle locking of the connecting disc 7 and the laser level body 9. During operation, this prevents the laser level body 9 from deflecting or wobbling due to external factors, greatly increasing the practicality of the device, reducing production costs, and solving the problem of the traditional device requiring a dedicated calibration platform for calibration.
[0033] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model 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 embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.
Claims
1. A level for surveying engineering, comprising a housing (1), characterized in that: The inner wall of the outer shell (1) is rotatably connected to a rotating ring (5) via a bearing (3) and a first rotating shaft (4). The inner wall of the rotating ring (5) is rotatably connected to a connecting disc (7) via a bearing (3) and a second rotating shaft (6). The upper surface of the connecting disc (7) is rotatably connected to a laser level body (9) via an annular groove (8). The lower surface of the connecting disc (7) is fixedly connected to a spherical counterweight (11) via a connecting column (10). A limiting column (12) is fixedly connected to the inner lower wall of the outer shell (1). A lifting plate (13) is slidably connected to the outer surface of the limiting column (12). A top column (14) is fixedly connected to the middle of the lowering plate (13). A rubber top block (15) is fixedly connected to the upper surface of the top column (14). A lifting rod (17) is fixedly connected to the upper surface of one end of the lifting plate (13). A sliding block (18) is fixedly connected to the outer surface of the upper end of the lifting rod (17). A push block (20) is fixedly connected to one end of the sliding block (18). A third rotating shaft (21) is fixedly connected to the outer surface of the outer shell (1). An eccentric wheel (22) is fixedly connected to the outer surface of the third rotating shaft (21). A handle (23) is fixedly connected to the upper surface of the eccentric wheel (22).
2. The level for surveying engineering according to claim 1, characterized in that: The lower surface of the outer shell (1) is provided with support feet (2), and there are three support feet (2) evenly distributed in a ring array.
3. A level for surveying engineering according to claim 1, characterized in that: There are two first rotating shafts (4) arranged symmetrically, and two second rotating shafts (6) arranged symmetrically. The line connecting the two first rotating shafts (4) and the line connecting the two second rotating shafts (6) are perpendicular to each other. The center of the spherical counterweight (11) is located at the intersection of the line connecting the two first rotating shafts (4) and the line connecting the two second rotating shafts (6).
4. A level for surveying engineering according to claim 1, characterized in that: A spring (16) is fixedly connected to the middle of the inner low wall of the outer shell (1). The upper end of the spring (16) abuts against the inner top wall of the top column (14). The upper surface of the rubber top block (15) is provided with a groove that matches the spherical counterweight (11).
5. A level for surveying engineering according to claim 1, characterized in that: The outer surface of the outer shell (1) is provided with a groove (19), and the outer surface of the sliding block (18) is slidably connected to the inner wall of the groove (19).
6. A level for surveying engineering according to claim 1, characterized in that: The outer surface of the push block (20) is slidably connected to the outer surface of the eccentric wheel (22), and the maximum eccentricity of the eccentric wheel (22) is set at a position away from the lower end of the handle (23).