A level for engineering quality inspection
By installing an arc-shaped plate and connecting strip at the bottom of the level body, combined with the design of a hollow magnet and a raised plate, the problem of traditional levels being easily deformed by impact is solved, achieving stability and convenient operation of the equipment, especially its effective use in low-light environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 宗长海
- Filing Date
- 2025-06-20
- Publication Date
- 2026-05-26
AI Technical Summary
Traditional levels are easily deformed or scratched by external impacts when not in use or being carried, affecting their effectiveness.
A level for engineering quality inspection was designed. It adopts a structure in which an arc plate and connecting strip are installed at the bottom of the level body. Combined with the design of hollow magnet and raised plate, the level is protected and easy to operate through magnetic connection and elastic coil spring.
It effectively prevents the level from being deformed or scratched by impact during transfer or placement, improving the stability and ease of use of the equipment, especially in low-light environments.
Smart Images

Figure CN224285929U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of level technology, and in particular to a level for engineering quality testing. Background Technology
[0002] A level is a precision measuring instrument used to measure small angles of tilt. It is mainly used to detect the deviation of an object from the horizontal plane, measure the levelness and verticality of machine tool guide rails and equipment installations, inspect the flatness, straightness and slight tilt angles of mechanical parts, measure the horizontal / vertical position of equipment installations, avoid operational failures caused by tilting, and calibrate the level of the installation foundation of large equipment (such as generators and cranes).
[0003] Traditional levels typically employ a support rod design. When the level is not in use or being carried, the surface of the object it contacts is easily deformed or scratched by external impacts, affecting the level's future use. To address this issue, a level for engineering quality inspection is proposed, in which a shrinkable protective shell is added to the level's contact surface to solve the aforementioned problems. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a level for engineering quality testing, which effectively solves the deficiencies of the prior art.
[0005] To achieve the above objectives, one embodiment of this utility model provides a level for engineering quality inspection, including a level body with three gripping areas at its top. A bubble level is installed in the middle of the level body. Three arc-shaped grooves are formed in the middle of the bottom of the level body, and three arc-shaped plates are rotatably installed inside each of the three grooves. A connecting strip is installed on one side of each of the three arc-shaped plates. A through groove is formed at the bottom of one side of the level body, and mounting seats are installed at both ends of the through groove. A coil spring is installed inside each of the two mounting seats, and a connecting shaft is snapped onto one end of each of the two mounting seats. One end of each of the two connecting shafts is bent toward the end of the connecting strip and fixedly connected to the connecting strip by screws.
[0006] Preferably, as described in any of the above schemes, a transparent protective plate is installed on the middle part of both sides of the level body near the bubble level. This scheme facilitates the protection of the bubble level, while also making it easy to observe the bubble level and use it as a reference to adjust the levelness of external equipment.
[0007] Preferably, one side of the middle part of the level body is recessed inward, and a battery, switch, LED light, and cover plate are installed inside. The battery, switch, and LED light are electrically connected by wires. The LED light enters the interior of one end of a transparent protective plate. This design facilitates the illumination of the level bubble, the battery provides power to the LED light, and the retainer acts as a circuit switch. One end of the transparent protective plate has a notch to facilitate the entry of the LED light. The cover plate is sealed with adhesive to the recessed part of the level body to prevent the battery from falling out.
[0008] Preferably, one of the above solutions is that three hollow magnets are embedded on one side of the level body near the three arc-shaped grooves, and the three magnets are magnetically connected to the top surface of the connecting strip. This solution facilitates the attraction of the connecting strip, and the connecting strip is separated from the hollow magnets by dragging it with the protruding plate. Two coil springs drive the arc plate back into the arc-shaped groove through the connecting shaft, making it convenient for the operator to hold the level body to measure the levelness.
[0009] Preferably, in any of the above solutions, the bottom end of one side of the connecting strip is fixedly connected to three arc-shaped plates by screws, and a protruding plate is installed in the middle of one side of the connecting strip. This solution provides a convenient gripping position for the user, and by moving the protruding plate downwards, the connecting strip is separated from the hollow magnet, making it convenient to use the level body. After the level body is used, the protruding plate pulls the arc-shaped plate out from the inside of the arc-shaped groove, wrapping around the bottom surface of the level body for protection. At the same time, the connecting shaft drives the coil spring to rotate, accumulating elastic potential energy.
[0010] Preferably, in any of the above solutions, baffles are installed on adjacent sides of the two mounting seats, and a gap is left between one side of the two baffles and the outer wall of the coil spring. This solution facilitates the sealing of the opening of the mounting seat, limits the coil spring, prevents the coil spring from popping out accidentally, and leaves a safe distance between the baffles and the coil spring to avoid affecting the rotation and release of the spring force.
[0011] This utility model has the following advantages:
[0012] 1. This level for engineering quality inspection, by setting the level body, has three arc-shaped plates installed at its bottom. The three arc-shaped plates are fixedly connected to the connecting strip, which facilitates pulling the connecting strip to drive the three arc-shaped plates to rotate along the arc-shaped groove. At the same time, one side of the connecting strip is magnetically connected to three hollow magnets to ensure that the position of the three arc-shaped plates remains stable, protecting the bottom surface of the level body and preventing deformation or scratches caused by impact during transfer or placement, thus ensuring the integrity of the bottom surface of the level body and effectively solving the problems existing in the prior art.
[0013] 2. This level for engineering quality inspection features a main body with three gripping areas at the top, allowing operators to easily lift the level and measure its levelness. It incorporates a battery, switch, and LED light. The LED light is housed within a transparent protective plate and can be activated by the switch to illuminate the level bubble, facilitating use in low-light conditions and enhancing overall usability. A raised plate provides a gripping position and facilitates the separation of the connecting strip from the hollow magnet. Two coil springs, connected by a connecting shaft, retract the arc-shaped plate into the arc-shaped groove, further enhancing ease of use. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0015] Figure 2 This is a cross-sectional view of the overall structure of this utility model;
[0016] Figure 3 This is a first-view structural diagram of the level body of this utility model;
[0017] Figure 4 This is a schematic diagram of the second-view structure of the level body of this utility model;
[0018] Figure 5 This is a schematic diagram of the arc-shaped plate structure of this utility model;
[0019] Figure 6 This is a schematic diagram of the mounting base structure of this utility model.
[0020] In the diagram: 1-Level body, 2-Mounting base, 3-Connecting shaft, 4-Arc plate, 5-Protruding plate, 6-Connecting strip, 7-Grip area, 8-Cover plate, 9-Transparent protective plate, 10-Battery, 11-Level bubble, 12-Coil spring, 13-Baffle, 14-Through groove, 15-Arc groove, 16-LED light, 17-Hollow magnet, 18-Switch. Detailed Implementation
[0021] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.
[0022] like Figures 1 to 6As shown, a level for engineering quality inspection includes a level body 1 with three gripping areas 7 at its top. A bubble level 11 is installed in the middle of the level body 1. Three arc-shaped grooves 15 are opened in the middle of the bottom of the level body 1, and three arc-shaped plates 4 are rotatably installed inside each of the three grooves. A connecting strip 6 is installed on one side of the three arc-shaped plates 4. A through groove 14 is opened at the bottom of one side of the level body 1. Mounting seats 2 are installed at both ends of the through groove 14. A coil spring 12 is installed inside each of the two mounting seats 2, and a connecting shaft 3 is snapped onto one end of each of the two mounting seats 2. One end of each of the two connecting shafts 3 is bent toward the end of the connecting strip 6. The two connecting shafts 3 are rotatably connected to the middle of the mounting seats 2. The two connecting shafts 3 are L-shaped, and their ends are fixedly connected to both ends of the connecting strip 6 by screws.
[0023] A transparent protective plate 9 is installed on the middle of both sides of the level body 1 near the bubble level 11. As an optional technical solution of this utility model, this is convenient for protecting the bubble level 11, and at the same time, it is convenient for observing the bubble level 11, and using it as a reference to adjust the levelness of external equipment, etc.
[0024] One side of the middle part of the level body 1 is recessed inward, and a battery 10, a switch 18, an LED light 16, and a cover plate 8 are installed inside. The battery 10, switch 18, and LED light 16 are electrically connected by wires. The LED light 16 enters the interior of one end of a transparent protective plate 9. As an optional technical solution of this utility model, this facilitates the illumination of the level bulb 11. The battery 10 provides power to the LED light 16. The retainer 18 serves to switch the circuit on and off. One end of the transparent protective plate 9 has a notch to facilitate the entry of the LED light 16. The cover plate 8 is sealed with adhesive to prevent the battery 10 from falling out.
[0025] Three hollow magnets 17 are embedded on one side of the level body 1 near the three arc-shaped grooves 15, and the three are magnetically connected to the top surface of the connecting strip 6. As an optional technical solution of this utility model, this facilitates the attraction of the connecting strip 6. The connecting strip 6 is pulled apart from the hollow magnets 17 by the protrusion plate 5. The two coil springs 12 drive the arc plate 4 to retract into the arc-shaped groove 15 through the connecting shaft 3, which makes it convenient for the operator to hold the level body 1 to measure the levelness.
[0026] The bottom end of one side of the connecting strip 6 is fixedly connected to three arc-shaped plates 4 by screws. A protruding plate 5 is installed in the middle of one side of the connecting strip 6. As an optional technical solution of this utility model, this facilitates the user to hold the device. By moving the protruding plate 5 downward, the connecting strip 6 is separated from the hollow magnet 17, making it convenient to use the level body 1. After the level body 1 is used, the protruding plate 5 pulls the arc-shaped plate 4 out from the inside of the arc-shaped groove 15 to wrap around the bottom surface of the level body 1 for protection. At the same time, the connecting shaft 3 drives the coil spring 12 to rotate and accumulate elastic potential energy.
[0027] Each of the two mounting bases 2 has a baffle 13 installed on its adjacent side. A gap is left between one side of the two baffles 13 and the outer wall of the coil spring 12. As an optional technical solution of this utility model, this makes it easy to block the opening of the mounting base 2, limit the coil spring 12, prevent the coil spring 12 from popping out accidentally, and at the same time leave a safe distance between them to avoid affecting the rotation and release of the spring spring 12.
[0028] This type of level for engineering quality inspection requires the following steps when used:
[0029] 1) When in use, the operator holds any one of the grip areas 7 and lifts the level body 1;
[0030] 2) By bending the protruding plate 5 downward, the connecting strip 6 is separated from the hollow magnet 17, and the two coil springs 12 drive the arc plate 4 to retract into the arc groove 15 through the connecting shaft 3.
[0031] 3) The operator holds the grip area 7 and moves the level body 1 to the measurement position to measure the equipment light;
[0032] 4) Turn on switch 18 to light up LED light 16, making it convenient for operators to use in low-light conditions.
[0033] In summary, when the user uses the level body 1, three arc-shaped plates 4 are installed at its bottom. These three arc-shaped plates 4 are fixedly connected to the connecting strip 6, allowing the user to easily pull the connecting strip 6 to rotate the three arc-shaped plates 4 along the arc-shaped groove 15. Simultaneously, one side of the connecting strip 6 is magnetically connected to three hollow magnets 17, ensuring the stability of the three arc-shaped plates 4 and protecting the bottom surface of the level body 1 from deformation or scratches caused by impacts during transfer or placement. This ensures the integrity of the bottom surface of the level body 1, effectively solving the problems existing in the prior art. Furthermore, by setting three gripping areas 7 at the top of the level body 1, it facilitates… The operator can pick up the level body 1 through the grip area 7 to measure the levelness of the device. The system is equipped with a battery 10, a switch 18, and an LED light 16. The LED light 16 is inserted into one end of a transparent protective plate 9 and then turned on by the switch 18 to illuminate the level bulb 11, making it convenient to use in low-light environments and improving overall practicality. The protruding plate 5 provides a gripping position for the operator and facilitates the separation of the connecting strip 6 from the hollow magnet 17. The two coil springs 12 drive the arc plate 4 to retract into the arc groove 15 through the connecting shaft 3, making it convenient for the operator to use.
[0034] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A level for engineering quality inspection, characterized in that: The system includes a level body (1) with three gripping areas (7) at its top. A bubble level (11) is installed in the middle of the level body (1). Three arc-shaped grooves (15) are opened in the middle of the bottom of the level body (1), and three arc-shaped plates (4) are rotatably installed inside each of the three. A connecting strip (6) is installed on one side of each of the three arc-shaped plates (4). A through groove (14) is opened at the bottom of one side of the level body (1). Mounting seats (2) are installed at both ends of the through groove (14). Coil springs (12) are installed inside each of the two mounting seats (2), and a connecting shaft (3) is snapped onto one end of each of the two mounting seats. One end of each connecting shaft (3) is bent toward the end of the connecting strip (6) and fixedly connected to the connecting strip (6) by screws.
2. The level for engineering quality inspection according to claim 1, characterized in that: The level body (1) is equipped with transparent protective plates (9) on the middle of both sides near the level bubble (11).
3. A level for engineering quality inspection according to claim 2, characterized in that: The middle part of the level body (1) is recessed inward, and a battery (10), a switch (18), an LED light (16), and a cover plate (8) are installed inside. The battery (10), the switch (18), and the LED light (16) are electrically connected by wires. The LED light (16) enters the interior of one end of a transparent protective plate (9).
4. A level for engineering quality inspection according to claim 3, characterized in that: The level body (1) has three hollow magnets (17) embedded on one side near the three arc grooves (15), and the three magnets are magnetically connected to the top surface of the connecting strip (6).
5. A level for engineering quality inspection according to claim 4, characterized in that: The bottom end of one side of the connecting strip (6) is fixedly connected to three arc-shaped plates (4) by screws, and a protruding plate (5) is installed in the middle of one side of the connecting strip (6).
6. A level for engineering quality inspection according to claim 5, characterized in that: Each of the two mounting bases (2) has a baffle (13) installed on its adjacent side, and a gap is left between one side of the two baffles (13) and the outer wall of the coil spring (12).