Portable laser level gauge

Abstract

The utility model relates to the technical field of measuring instruments, in particular to a portable laser level gauge which comprises a triangular support, a horizontal adjusting device is arranged on the top of the triangular support, a positioning connecting assembly is arranged on the top of the horizontal adjusting device, and a level gauge body is connected to the top of the positioning connecting assembly in a sliding mode. The portable laser level gauge comprises a level gauge main body, a protection adjusting assembly is arranged at the bottom end of the interior of the level gauge main body, a rotating shaft in the protection adjusting assembly is rotationally connected to the interior of the level gauge main body, a gear b is arranged at the tail end of the rotating shaft, and a light spot adjusting knob is rotationally connected to the exterior of the level gauge main body. By rotating the locking knobs, switching of the primary locking mode and the large aperture mode can be synchronously completed, laser eye injury is avoided, the operation safety is improved, double stable connection is achieved through multi-assembly linkage and thread locking, only two knobs need to be operated for disassembly and assembly, no extra tool is needed, and the portability and the use efficiency are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of measuring instrument technology, specifically a portable laser level. Background Technology

[0002] A laser level is a measuring instrument that integrates laser emission and leveling functions. It can project horizontal and vertical laser lines and is used for positioning in engineering construction. Engineering construction scenarios are mostly outdoor and involve multiple work points. The portable design makes it easy for a single person to carry and move it. It can be quickly deployed to different construction locations, reducing transportation costs and time, and improving the efficiency and flexibility of measurement operations.

[0003] After using a laser level, if the operator forgets to adjust the spot mode to the large aperture mode, the spot mode will not automatically adjust when the device is started the next time it is used. It will often work directly in the converged spot mode. In construction sites with frequent personnel movement, this can easily cause accidental damage to people's eyes from high-energy lasers. It is not suitable for complex usage scenarios and poses a significant safety hazard.

[0004] To address this, we propose a portable laser level that allows the spot adjustment knob to be switched to a large aperture mode when the level and tripod are installed. Utility Model Content

[0005] One of the technical problems this application aims to solve is that operator negligence may cause the spot mode to not be adjusted to the large aperture mode, and the instrument is often started directly in the focused spot mode. In construction sites with frequent personnel movement, this can easily cause accidental damage to the human eye from high-energy lasers.

[0006] To address the aforementioned technical problems, this application provides a portable laser level, comprising a tripod, a horizontal adjustment device at the top of the tripod, a positioning connection assembly at the top of the horizontal adjustment device, a level body slidably connected to the top of the positioning connection assembly, a protective adjustment assembly at the bottom interior of the level body, a rotating shaft rotatably connected to the interior of the level body, a gear b at the end of the rotating shaft, a spot adjustment knob rotatably connected to the exterior of the level body, a driven gear on the exterior of the spot adjustment knob, the external teeth of the gear b meshing with the external teeth of the driven gear, and locking connection assemblies on both outer sides of the level body.

[0007] In some embodiments, the positioning connection assembly includes a connecting plate, the bottom of which is disposed on the top of the leveling device, a fixing plate is disposed on the top left side of the connecting plate, the outside of which is slidably connected to the bottom mounting groove of the level body, and a limit plate is disposed on the right side of the fixing plate.

[0008] In some embodiments, the limiting plate is externally slidably connected to the interior of the level body, the top of the limiting plate is provided with an arc-shaped groove, the limiting plate is provided with an opening groove, and the fixing plate is provided with a limiting groove at the top of the opening groove.

[0009] In some embodiments, the protective adjustment assembly includes a rotating shaft, the right arc-shaped end of the limiting plate is in contact with the outside of the rotating shaft, the two outer ends of the rotating shaft are slidably connected in the grooves on both outer sides of the level body, and a gear a is provided on the outside of the rotating shaft.

[0010] In some embodiments, the gear a is disposed on the outside of the opening groove, three return springs are disposed inside the level body, a limit block is disposed at the bottom of the return spring, the bottom of the limit block is in contact with the outside of the rotating shaft, and a locking knob is disposed on the outside of the rotating shaft.

[0011] In some embodiments, a rack is slidably connected inside the body of the level instrument, a locking plate is provided on the top of the rack, the outer teeth of the gear a mesh with the outer teeth of the rack, and the outer side of the locking plate is slidably connected to the inner side of the limiting groove.

[0012] In some embodiments, the locking connection assembly includes a fixing post, the fixing post being disposed outside the level instrument body, a positioning pin being slidably connected inside the fixing post, a compression spring being sleeved outside the positioning pin, and the compression spring being disposed outside the fixing post.

[0013] In some embodiments, the locating pin is externally slidably connected in the external limiting hole of the locating connection assembly, the locating pin is externally rotatably connected to a knob, the knob is externally provided with a threaded ring, the fixed post is externally provided with a threaded groove, and the threaded ring is externally threadedly connected to the inside of the threaded groove.

[0014] This utility model has at least the following beneficial effects:

[0015] 1. During installation, the locking plate is inserted into the limit slot by rotating the locking knob to complete the initial locking. At the same time, gear b drives the driven gear and the spot adjustment knob to rotate, so that the laser spot maintains a large diffused aperture mode. Structurally, this avoids the spot from converging and irradiating personnel when the equipment is started, effectively reducing the risk of high-energy laser damage to the human eye. It is suitable for use scenarios with frequent personnel movement in construction sites and improves operational safety.

[0016] 2. By utilizing the fixed plate and limit plate of the positioning connection component and the gear and rack linkage structure of the protective adjustment component, combined with the threaded locking design of the locking connection component, a double mechanical locking of the level body and the tripod is achieved. The connection is stable and vibration resistant. The disassembly and assembly process only requires operating the locking knob and the connection knob. The steps are simple and no additional tools are required, which greatly improves the portability and efficiency of the equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the connecting plate structure of this utility model;

[0019] Figure 3 This utility model Figure 2 Enlarged diagram of A in the middle;

[0020] Figure 4 This is a schematic diagram of the limiting plate structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the gear b structure of this utility model;

[0022] Figure 6 This utility model Figure 5 Enlarged diagram of B in the diagram.

[0023] In the diagram: 1. Triangular support; 2. Horizontal adjustment device; 3. Level instrument body; 4. Positioning connection assembly; 41. Connecting plate; 42. Fixing plate; 43. Limiting plate; 44. Arc groove; 45. Limiting groove; 46. Opening groove; 5. Protective adjustment assembly; 51. Rotating shaft; 52. Locking knob; 53. Return spring; 54. Limiting block; 55. Gear a; 56. Rack; 57. Locking plate; 58. Gear b; 6. Locking connection assembly; 61. Fixing column; 62. Positioning pin; 63. Compression spring; 64. Threaded groove; 65. Threaded ring; 66. Connecting knob; 7. Spot adjustment knob; 8. Driven gear. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1: Please refer to Figures 1-4This utility model provides a technical solution: a portable laser level, including a tripod 1, which is a stable three-legged structure with high adjustability to adapt to different working environments. A horizontal adjustment device 2 is provided on the top of the tripod 1. The horizontal adjustment device 2 is a precision component that can finely adjust the horizontal state. It achieves precise horizontal calibration through the internal bubble level and adjustment knob. A positioning connection component 4 is provided on the top of the horizontal adjustment device 2. The positioning connection component 4 is a transition component used to securely connect the level body 3 and the horizontal adjustment device. Its structure ensures a stable connection and is easy to disassemble. The level body 3 is slidably connected to the top of the positioning connection component 4. The level body 3 is a precision instrument that integrates laser emission and reception functions. A protective adjustment component 5 is provided at the bottom of the inside of the level body 3. The protective adjustment component 5 is a component that realizes the light spot adjustment function. Its design avoids the light spot from converging and irradiating personnel when the device is started, effectively reducing the risk of high-energy laser damage to human eyes.

[0026] The rotating shaft 51 in the protective adjustment assembly 5 is rotatably connected inside the level instrument body 3. The rotating shaft 51 is cylindrical and can rotate around its axis under external force. A gear b58 is provided at the end of the rotating shaft 51. The gear b58 is a transmission component that meshes with the driven gear 8. Its tooth shape matches the driven gear 8 to ensure smooth transmission. A laser spot adjustment knob 7 is rotatably connected to the outside of the level instrument body 3. The laser spot adjustment knob 7 is used to adjust the size and shape of the laser spot. Its surface is provided with anti-slip texture for easy operation. The light spot adjustment knob 7 is externally provided with a driven gear 8, which is a component that meshes with gear b58 to transmit rotational power. The external teeth of gear b58 and the external teeth of driven gear 8 mesh with each other. This meshing relationship allows the rotation of the light spot adjustment knob 7 to be converted into the rotation of the rotating shaft 51. Locking connection components 6 are provided on both sides of the external surface of the level instrument body 3. The locking connection components 6 are components used to fix the level instrument body 3 and the positioning connection components 4. Their structure ensures a stable connection and facilitates quick disassembly.

[0027] The positioning connection assembly 4 includes a connecting plate 41, which is a flat plate connecting the horizontal adjustment device 2 and the level instrument body 3. Its bottom is positioned on top of the horizontal adjustment device 2. A fixing plate 42, rectangular in shape, is located on the top left side of the connecting plate 41 and is slidably connected to the bottom mounting groove of the level instrument body 3. This sliding connection allows the level instrument body 3 to be easily installed onto the positioning connection assembly 4. A limiting plate 43, with a specific shape, is located on the right side of the fixing plate 42 to restrict the position of the rotation shaft 51. The component is externally slidably connected to the inside of the level body 3. The top of the limiting plate 43 is provided with an arc-shaped groove 44, which is a groove that matches the outside of the rotating shaft 51 and is used to limit the up and down movement of the rotating shaft 51. The limiting plate 43 is provided with an opening groove 46, which is a rectangular groove for accommodating the gear a55. Its size matches the gear a55. The fixing plate 42 is provided with a limiting groove 45 at the top of the opening groove 46. The limiting groove 45 is a rectangular groove for the sliding of the locking plate 57. Its depth ensures that the locking plate 57 can securely lock the fixing plate 42.

[0028] The protective adjustment assembly 5 includes a rotating shaft 51. The right arc-shaped end of the limiting plate 43 is in contact with the outside of the rotating shaft 51. This contact relationship restricts the radial movement of the rotating shaft. The two outer ends of the rotating shaft 51 are slidably connected to the sliding grooves on both sides of the outside of the level body 3. This sliding connection allows the rotating shaft 51 to move in the horizontal direction. A gear a55 is provided on the outside of the rotating shaft 51. The gear a55 is a component that meshes with the rack 56 to transmit power. Its outside is located inside the opening slot 46. Three return springs 53 are provided inside the level body 3. The return springs 53 are elastic components that provide return force. Their material is made of high-elasticity metal to ensure the return effect. A limiting block 54 is provided at the bottom of the return springs 53. The limiting block 54 is a block-shaped component that restricts the position of the rotating shaft 51. Its bottom is in contact with the outside of the rotating shaft 51. This contact relationship ensures that the rotating shaft 51 can return to the initial position under the action of the return springs 53.

[0029] A locking knob 52 is provided on the outside of the rotating shaft 51. The locking knob 52 is used to lock the position of the rotating shaft 51. Its surface is provided with anti-slip texture for easy operation. A rack 56 is slidably connected inside the level instrument body 3. The rack 56 is a long strip-shaped component that meshes with the gear a55 to transmit power. A locking plate 57 is provided on its top. The locking plate 57 is a plate-shaped component used to lock the fixing plate 42. Its exterior is slidably connected to the inside of the limiting groove 45. This sliding connection allows the locking plate 57 to move within the limiting groove 45 to achieve the locking or unlocking function. The external teeth of the gear a55 mesh with the external teeth of the rack 56. This meshing relationship allows the rotation of the gear a55 to be converted into the linear movement of the rack 56.

[0030] Example 2: Please refer to Figure 5 and Figure 6 The locking connection assembly 6 includes a fixing post 61, which is a cylindrical component fixed to the outside of the level instrument body 3. The fixing post 61 is externally located on the outside of the level instrument body 3. A positioning pin 62 is slidably connected inside the fixing post 61. The positioning pin 62 is a cylindrical component for inserting into the external limiting hole of the positioning connection assembly 4. A compression spring 63 is sleeved on its outside. The compression spring 63 is an elastic component for providing a reset force. The compression spring 63 is externally located inside the fixing post 61. This arrangement allows the positioning pin 62 to automatically reset under the action of the compression spring 63.

[0031] The external sliding connection of the positioning pin 62 is in the external limiting hole of the positioning connection assembly 4. This sliding connection allows the positioning pin 62 to be easily inserted into or removed from the limiting hole. The external rotatable connection of the positioning pin 62 is a connecting knob 66, which is a knob used to rotate to lock or unlock the positioning pin 62. The external part of the connecting knob 66 ​​is provided with a threaded ring 65, which is an annular component that matches the threaded groove 64. Its external thread is connected to the inside of the threaded groove 64. The external part of the fixing post 61 is provided with a threaded groove 64. This threaded connection allows the rotation of the connecting knob 66 ​​to be converted into the linear movement of the positioning pin 62 to achieve the locking or unlocking function.

[0032] Based on the above embodiments, the following is the complete working principle of the above embodiments: When it is necessary to install the level instrument body 3 on the tripod 1, firstly, adjust the horizontal state of the tripod 1 through the horizontal adjustment device 2, then slide the mounting groove at the bottom of the level instrument body 3 into the fixing plate 42 of the positioning connection assembly 4, so that the limiting plate 43 slides into the interior of the level instrument body 3. At this time, the right arc-shaped end of the limiting plate 43 presses the rotating shaft 51 of the protective adjustment assembly 5, forcing the rotating shaft 51 to slide upward along the sliding grooves on both sides of the level instrument body 3 and compress the return spring 53. The positioning spring 53 applies a downward preload to the rotating shaft 51 through the limiting block 54. The gear a55 on the rotating shaft 51 moves synchronously with the rotating shaft 51. Since the gear a55 is located in the opening slot 46 of the limiting plate 43, the limiting plate 43 is prevented from interfering with the rotation of the gear a55. After the gear a55 moves upward with the rotating shaft 51, it meshes with the outer teeth of the rack 56. By rotating the locking knob 52, the locking plate 57 at the bottom of the rack 56 is inserted into the limiting slot 45 on the outside of the fixing plate 42, thus initially realizing the mechanical locking of the level instrument body 3 and the positioning connection assembly 4.

[0033] Synchronously, as the rotating shaft 51 moves upward, the gear b58 at its end meshes with the driven gear 8 outside the spot adjustment knob 7. When the locking knob 52 is rotated, causing the locking plate 57 at the top of the rack 56 to insert into the limiting groove 45 outside the fixed plate 42, the gear b58 drives the driven gear 8 and the spot adjustment knob 7 to rotate, adjusting the laser spot to a diffused large aperture mode to prevent it from illuminating personnel when the level instrument body 3 is started. In the spot focusing mode, the energy is concentrated and may cause harm to the eyes. After the initial locking is completed, the locking connection assembly 6 is operated, pushing the connection knob 66 ​​to make the positioning pin 62 slide along the fixed post 61 and insert into the external limiting hole of the positioning connection assembly 4. The compression spring 63 is compressed and applies a reverse preload force to the positioning pin 62, rotating the connection... Knob 66 ​​is turned so that the threaded ring 65 is threadedly connected to the threaded groove 64 of the fixed column 61, thereby locking the positioning pin 62 and further securing the connection between the level instrument body 3 and the tripod bracket 1. When it is necessary to disassemble the level instrument body 3, first close the level instrument body 3, then rotate the connecting knob 66 ​​in the opposite direction to disengage the threaded ring 65 from the threaded groove 64. The compression spring 63 returns to its original position and pushes the positioning pin 62 out of the limiting hole, releasing the fixation of the locking connection assembly 6. At this time, the return spring 53 releases its elastic force and pushes the rotating shaft 51 down the slide groove through the limiting block 54. The rotating shaft 51 drives the gear a55 to move down, driving the rack 56 and the locking plate 57 to slide up, so that the locking plate 57 disengages from the limiting groove 45. Finally, the level instrument body 3 is pulled out along the fixing plate 42 to complete the disassembly.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] 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.

Claims

1. A portable laser level, comprising a tripod (1), characterized in that: A horizontal adjustment device (2) is provided on the top of the triangular support (1), and a positioning connection component (4) is provided on the top of the horizontal adjustment device (2). A level instrument body (3) is slidably connected to the top of the positioning connection component (4). A protective adjustment component (5) is provided at the bottom of the inside of the level instrument body (3). A rotating shaft (51) in the protective adjustment component (5) is rotatably connected to the inside of the level instrument body (3). A gear b (58) is provided at the end of the rotating shaft (51). A light spot adjustment knob (7) is rotatably connected to the outside of the level instrument body (3). A driven gear (8) is provided on the outside of the light spot adjustment knob (7). The external teeth of the gear b (58) mesh with the external teeth of the driven gear (8). Locking connection components (6) are provided on both sides of the outside of the level instrument body (3).

2. The portable laser level according to claim 1, characterized in that: The positioning connection assembly (4) includes a connecting plate (41), the bottom of which is located at the top of the leveling device (2). A fixing plate (42) is provided on the top left side of the connecting plate (41). The fixing plate (42) is slidably connected to the bottom mounting groove of the level body (3). A limit plate (43) is provided on the right side of the fixing plate (42).

3. The portable laser level according to claim 2, characterized in that: The limiting plate (43) is externally slidably connected to the inside of the level instrument body (3). An arc groove (44) is provided on the top of the limiting plate (43). An opening groove (46) is provided on the limiting plate (43). A limiting groove (45) is provided on the fixing plate (42) at the top of the opening groove (46).

4. The portable laser level according to claim 3, characterized in that: The protective adjustment assembly (5) includes a rotating shaft (51), the right arc-shaped end of the limiting plate (43) is in contact with the outside of the rotating shaft (51), the two outer ends of the rotating shaft (51) are slidably connected in the sliding grooves on both sides of the outside of the level body (3), and a gear a (55) is provided on the outside of the rotating shaft (51).

5. The portable laser level according to claim 4, characterized in that: The gear a (55) is located on the outside of the opening slot (46). The body of the level instrument (3) is equipped with three return springs (53). The bottom of the return spring (53) is equipped with a limit block (54). The bottom of the limit block (54) is in contact with the outside of the rotating shaft (51). The outside of the rotating shaft (51) is equipped with a locking knob (52).

6. The portable laser level according to claim 5, characterized in that: The level instrument body (3) is internally slidably connected to a rack (56), and a locking plate (57) is provided on the top of the rack (56). The external teeth of the gear a (55) mesh with the external teeth of the rack (56), and the external locking plate (57) is externally slidably connected to the inner side of the limiting groove (45).

7. The portable laser level according to claim 1, characterized in that: The locking connection assembly (6) includes a fixing post (61), the outside of which is disposed on the outside of the level body (3), a positioning pin (62) is slidably connected inside the fixing post (61), a compression spring (63) is sleeved on the outside of the positioning pin (62), and the outside of the compression spring (63) is disposed inside the fixing post (61).

8. The portable laser level according to claim 7, characterized in that: The external locating pin (62) is slidably connected in the external limiting hole of the positioning connection assembly (4). The external locating pin (62) is rotatably connected to a connecting knob (66). The external connecting knob (66) is provided with a threaded ring (65). The external fixed column (61) is provided with a threaded groove (64). The external threaded ring (65) is threadedly connected to the inside of the threaded groove (64).

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