Range finder for measuring distance through refraction

Abstract

The utility model relates to the technical field of range finders, and discloses a range finder for measuring distance through refraction, which comprises a placing frame, a range finder body is arranged in the placing frame, a working box is fixedly arranged on one side of the range finder body, a limiting assembly is arranged on one side of the working box, the limiting assembly comprises a limiting hole, and the limiting hole is communicated with the working box. The limiting holes are formed in the peripheral side of the limiting disc, and the limiting disc is fixedly connected with the rotating shaft. According to the working box, the limiting assembly is arranged and used for limiting and fixing the rotating shaft, so that the rotating shaft cannot deflect when shaking, and the situation that the reflection angle of a lens in the working box is changed due to shaking is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of rangefinders, in particular to a rangefinder for measuring distance through refraction. Background Art

[0002] Construction surveying refers to the surveying work performed during the construction phase of various projects. Its primary task is to accurately measure (set out) the plan position and elevation of the building designed on the blueprints, according to the design and construction requirements, on the construction work surface. This serves as the basis for construction. A series of surveying and control work is also performed during the construction process to guide and ensure that construction is carried out according to the design requirements.

[0003] The Chinese utility model patent with patent application number 202222260166.X provides a construction rangefinder. Through the refraction of the lens, the intensity of the laser emitted by the rangefinder can be greatly enhanced, so that the device can detect distance information over a longer distance, effectively avoiding the need to measure the distance information of the target point multiple times, thereby reducing the time required for measurement and alleviating the workload of the staff. At the same time, by adjusting the reflection angle of the lens, the intensity of the laser convergence can be adjusted, thereby effectively improving the work efficiency of the staff.

[0004] However, during the use of the above-mentioned device, it was found that when adjusting the reflection angle of the lens, the device needs to pull the tooth plate and control the rotation of the lens through the engagement of the tooth plate and the gear. When an unexpected situation occurs during the measurement process and causes the rangefinder to shake, the tooth plate is prone to shaking, causing the reflection angle of the lens to change. The staff needs to readjust the reflection angle of the lens, which affects the measurement efficiency. Utility Model Content

[0005] The purpose of the utility model is to provide a rangefinder for measuring distance by refraction, so as to solve the problem raised in the above-mentioned background art that when an unexpected situation occurs during the measurement process and the rangefinder shakes, the tooth plate is prone to shake, causing the reflection angle of the lens to change, requiring the staff to readjust the reflection angle of the lens, which affects the measurement efficiency.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a rangefinder for measuring distance by refraction, comprising a placement frame, wherein a rangefinder body is mounted inside the placement frame, a working box is fixedly mounted on one side of the rangefinder body, a limit assembly is provided on one side of the working box, the limit assembly includes a limit hole, the limit hole is provided on the circumference of a limit disk, and the limit disk is fixedly connected to a rotating shaft.

[0007] Preferably, a worm is rotatably provided inside the working box, the worm is fixedly connected to the rotating shaft, one end of the rotating shaft is connected to a knob 1, the worm is engaged with a worm wheel, the worm wheel is rotatably provided on the connecting plate, and a lens is fixedly mounted on the worm wheel.

[0008] Preferably, the limit assembly includes a limit groove, the internal sliding connection of the limit groove is provided with a moving block, one end of the moving block is connected to the limit block, the limit block is adapted to the limit hole, one side of the moving block is fixedly connected with a push plate, the other end of the moving block is connected to the inner wall of the limit groove through a spring, and the push plate is slidably set in the slide groove.

[0009] Preferably, the placement frame is installed on the top of the bracket, and a connecting arm is provided on the peripheral side of the bracket. The bracket is rotatably connected to the supporting foot through the connecting arm, and a connecting block is slidably connected to the supporting foot.

[0010] Preferably, a connecting column is fixedly provided in the middle of the bottom of the bracket, a connecting frame is slidably provided on the connecting column, a connecting rod corresponding to the supporting foot is fixedly provided on the peripheral side of the connecting frame, and the connecting rod is rotatably connected to the connecting block.

[0011] Preferably, a fixing assembly is provided inside the connecting frame, and the fixing assembly includes a fixing block. A connecting hole is provided on the connecting column, and the fixing block corresponds to the connecting hole. The connecting hole is rotatably connected to the threaded rod, and the fixing block is provided in the fixing groove. The threaded rod is spirally connected to the connecting frame, and one end of the threaded rod is connected to knob 2.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The utility model sets a limit assembly and uses the limit assembly to limit and fix the rotating shaft, so that the rotating shaft will not deflect when encountering shaking, thereby avoiding the shaking causing the reflection angle of the lens inside the working box to change. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a diagram showing the overall structure of the utility model;

[0015] Figure 2 For this utility model Figure 1 Structural display diagram of the middle limit assembly;

[0016] Figure 3 For this utility model Figure 1 The internal structure of the working box is shown in the figure;

[0017] Figure 4 For this utility model Figure 1 Diagram showing the internal structure of the middle connecting frame.

[0018] In the figure: 1. Placement frame; 2. Rangefinder body; 3. Working box; 31. Knob 1; 32. Rotating shaft; 33. Limiting plate; 34. Worm; 35. Worm gear; 36. Lens; 37. Connecting plate; 4. Bracket; 41. Connecting arm; 42. Connecting column; 421. Connecting hole; 5. Support foot; 51. Connecting block; 6. Limiting assembly; 61. Limiting slot; 62. Spring; 63. Moving block; 631. Limiting block; 64. Push plate; 65. Slide slot; 66. Limiting hole; 7. Connecting frame; 71. Connecting rod; 8. Fixing assembly; 81. Knob 2; 82. Threaded rod; 83. Fixing block; 84. Fixing slot. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Example 1

[0021] See also Figures 1-4 The illustrated rangefinder for measuring distance by refraction includes a placement frame 1, a rangefinder body 2 being mounted within the placement frame 1, a working box 3 being fixedly mounted on one side of the rangefinder body 2, a limit assembly 6 being provided on one side of the working box 3, the limit assembly 6 including a limit hole 66, the limit hole 66 being provided around a limit plate 33, and the limit plate 33 being fixedly connected to a rotating shaft 32;

[0022] A worm 34 is rotatably provided inside the working box 3. The worm 34 is fixedly connected to the rotating shaft 32. One end of the rotating shaft 32 is connected to a knob 31. The worm 34 is meshed with a worm wheel 35. The worm wheel 35 is rotatably provided on a connecting plate 37. A lens 36 is fixedly mounted on the worm wheel 35.

[0023] The limiting assembly 6 includes a limiting groove 61, a moving block 63 is slidably connected to the interior of the limiting groove 61, one end of the moving block 63 is connected to the limiting block 631, the limiting block 631 is adapted to the limiting hole 66, one side of the moving block 63 is fixedly connected to a push plate 64, the other end of the moving block 63 is connected to the inner wall of the limiting groove 61 via a spring 62, and the push plate 64 is slidably set in the slide groove 65;

[0024] The placement frame 1 is installed on the top of the bracket 4. A connecting arm 41 is provided on the peripheral side of the bracket 4. The bracket 4 is rotatably connected to the support leg 5 through the connecting arm 41. The support leg 5 is slidably connected to a connecting block 51.

[0025] A connecting column 42 is fixedly provided in the middle of the bottom of the bracket 4, a connecting frame 7 is slidably provided on the connecting column 42, and a connecting rod 71 corresponding to the support leg 5 is fixedly provided on the peripheral side of the connecting frame 7, and the connecting rod 71 is rotatably connected to the connecting block 51;

[0026] A fixing assembly 8 is provided inside the connecting frame 7, and the fixing assembly 8 includes a fixing block 83. A connecting hole 421 is provided on the connecting column 42. The fixing block 83 corresponds to the connecting hole 421. The connecting hole 421 is rotatably connected to the threaded rod 82. The fixing block 83 is set in the fixing groove 84. The threaded rod 82 is spirally connected to the connecting frame 7. One end of the threaded rod 82 is connected to the knob 2 81.

[0027] In this solution, the rangefinder body 2 is installed in the placement frame 1, and the rangefinder body 2 is fixed by a fixing plate on one side of the placement frame 1 to prevent the rangefinder body 2 from shaking during the measurement process. When the lens 36 inside the working box 3 needs to be rotated, the staff pushes the push plate 64, causing the push plate 64 to move in the slide groove 65. At the same time, the moving block 63 connected to the push plate 64 squeezes the spring 62, causing the limit block 631 connected to one end of the moving block 63 to move out of the limit hole 66, so that the rotating shaft 32 can drive the worm 34 to rotate under the rotation of the knob 31. When the worm 34 rotates, the meshing of the worm 34 and the worm wheel 35 causes the worm wheel 35 to rotate on the connecting plate 37, thereby adjusting the angle of the lens 36.

[0028] After the angle of the lens 36 is adjusted, the operator releases the push plate 64 and uses the spring 62 inside the limiting groove 61 to push the moving block 63 so that the limiting block 631 enters the limiting hole 66, thereby limiting the limiting plate 33 to prevent the limiting plate 33 from rotating. At the same time, the rotating shaft 32 is restricted, thereby preventing the rotating shaft 32 from driving the worm 34 to rotate and causing the angle of the lens 36 to deflect again due to an unexpected situation.

[0029] When measuring, the support legs 5 are spread out to support the device. When the support legs 5 are spread out, the connecting frame 7 is used to move upward along the connecting column 42, so that the distance between the connecting frame 7 and the bracket 4 becomes closer, thereby driving the connecting block 51 to move on the support legs 5 through the connecting frame 7. In this process, since the distance from the connecting frame 7 to the connecting block 51 is greater than the distance from the connecting frame 7 to the connecting arm 41, the spread angle of the support legs 5 becomes larger during the rising process of the connecting block 51, so that the support legs 5 can stably support the bracket 4. By using multiple identical connecting rods 71 ​​on the connecting frame 7, the spread angles of the support legs 5 can be the same, so that each support leg 5 is evenly stressed during support, the overall stability is stronger, and the device itself is prevented from shaking during measurement.

[0030] After the support leg 5 determines the supporting angle, the fixing assembly 8 is used to fix the connecting frame 7 to prevent the connecting frame 7 from moving and causing the support leg 5 to change its support angle. During the fixing process, the threaded rod 82 is driven to rotate by rotating the knob 2 81. The threaded rod 82 is connected to the connecting frame 7 by a spiral connection, thereby pushing the fixing block 83 to move in the fixing groove 84, so that the fixing block 83 can enter the connecting hole 421, completing the fixation of the connecting column 42.

[0031] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although the 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 may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rangefinder for measuring distance by refraction, characterized in that: include: A placement frame (1) is provided, wherein a rangefinder body (2) is installed inside the placement frame (1), a working box (3) is fixedly installed on one side of the rangefinder body (2), a limiting assembly (6) is provided on one side of the working box (3), the limiting assembly (6) includes a limiting hole (66), the limiting hole (66) is provided on the circumference of a limiting plate (33), and the limiting plate (33) is fixedly connected to a rotating shaft (32).

2. A distance measuring instrument for measuring distance by refraction according to claim 1, characterized in that: A worm (34) is rotatably provided inside the working box (3), the worm (34) is fixedly connected to the rotating shaft (32), one end of the rotating shaft (32) is connected to a knob (31), the worm (34) is meshed with a worm wheel (35), the worm wheel (35) is rotatably provided on a connecting plate (37), and a lens (36) is fixedly mounted on the worm wheel (35).

3. The distance measuring instrument according to claim 2, wherein: The limiting assembly (6) includes a limiting groove (61), the interior of the limiting groove (61) is slidably connected to a moving block (63), one end of the moving block (63) is connected to a limiting block (631), the limiting block (631) is adapted to the limiting hole (66), one side of the moving block (63) is fixedly connected to a push plate (64), the other end of the moving block (63) is connected to the inner wall of the limiting groove (61) through a spring (62), and the push plate (64) is slidably arranged in a sliding groove (65).

4. The distance measuring instrument according to claim 1, wherein: The placement frame (1) is installed on the top of the bracket (4); a connecting arm (41) is provided on the peripheral side of the bracket (4); the bracket (4) is rotatably connected to the supporting leg (5) through the connecting arm (41); and a connecting block (51) is slidably connected to the supporting leg (5).

5. The distance measuring instrument according to claim 4, wherein: A connecting column (42) is fixedly provided in the middle of the bottom of the bracket (4), a connecting frame (7) is slidably provided on the connecting column (42), a connecting rod (71) corresponding to the supporting leg (5) is fixedly provided on the peripheral side of the connecting frame (7), and the connecting rod (71) is rotatably connected to the connecting block (51).

6. The distance measuring instrument according to claim 5, wherein: A fixing assembly (8) is provided inside the connecting frame (7), and the fixing assembly (8) includes a fixing block (83). A connecting hole (421) is provided on the connecting column (42), and the fixing block (83) corresponds to the connecting hole (421). The connecting hole (421) is rotatably connected to the threaded rod (82). The fixing block (83) is provided in a fixing groove (84), and the threaded rod (82) is spirally connected to the connecting frame (7). One end of the threaded rod (82) is connected to a second knob (81).

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