Length laser measuring instrument and measuring method based on optical measurement
By designing a laser measuring instrument with rotating gears and driving mechanisms, horizontal and vertical measurement of the laser emitter is achieved, and the problem of inconvenience in measuring special structures in the prior art is solved, and the convenience and accuracy of measurement are improved.
Patent Information
- Application Number
- CN202510146399.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-10
- Publication Date
- 2025-04-29
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing length laser measuring instruments are inconvenient when measuring special structures, especially under bed or similar structures, which are difficult to operate and have large measurement errors, which affect the convenience of use and measurement accuracy.
A length laser measuring instrument based on optical measurement is designed, including a housing, a controller, a laser emitter, a rotating gear, a top plate and a driving mechanism. By driving the first driving rack to slide and rotate the rotating gear, the laser emitter is transformed from a horizontal state to a vertical state, realizing multi-directional measurement.
It realizes convenient measurement of special structures, reduces operation difficulty, improves measurement accuracy and convenience, reduces measurement errors, and avoids property losses caused by errors.
Smart Images
Figure CN119901210A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of laser measurement, and in particular relates to a length laser measuring instrument and a measuring method based on optical measurement. Background Art
[0002] Laser measuring instrument is a high-precision measuring device based on the laser principle. It uses the characteristics of laser beam for measurement and has the advantages of high precision, fast measurement and non-contact measurement. The device emits a beam of red or green laser and uses a receiver to receive the information reflected by the laser to calculate the distance between the target object and the measuring instrument. Its working principle is mainly based on the linear propagation of light and the stability of wavelength. By measuring the time difference from laser emission to reception, the distance between the object being measured and the measuring instrument can be accurately calculated.
[0003] However, there are still some common problems with the existing length laser measuring instruments. Although they can meet most length laser measurement requirements, they are not convenient to use when measuring the length of special structures, especially when measuring special structures under a bed or similar structures under a bed. The measuring instrument can only enter the structure through the gap below the structure to measure various length indicators inside the structure. When traditional measuring instruments are used to perform this operation, because the gap below the structure is low, users usually need to lie on the ground to operate, which greatly affects the convenience and effect of the equipment. Even if the measuring instrument is placed under the structure, its subsequent debugging operation is extremely difficult to complete. At the same time, due to the inconvenience of operation, its measurement data will inevitably have large errors. If such inaccurate measurement data is used in actual use, it may cause economic and property losses. Therefore, a new type of length laser measuring instrument that can cope with the above problems is needed. Summary of the invention
[0004] In view of the problems existing in the prior art, the present invention provides a length laser measuring instrument and a measuring method based on optical measurement, which have the advantages of simple and quick operation and small measurement error. It solves the problems that the existing length laser measuring instrument cannot measure specific structures, the measuring instrument is difficult to place and subsequently debug, and the measurement error is large.
[0005] The present invention is implemented as follows: a length laser measuring instrument and measuring method based on optical measurement, including a shell and a controller, the controller is fixedly connected to one side of the shell, and also includes a laser emitter, a rotating gear, a top plate, a first driving rack and a driving mechanism, the rotating gear is rotatably connected to the inside of the shell, the laser emitter is located inside the shell and is fixedly connected to the rotating gear, a laser hole for the laser beam to pass through is opened on the outside of the shell, the top plate is fixedly connected to the top of the shell, the driving mechanism is arranged on one side of the shell, the first driving rack is arranged inside the shell, the driving mechanism can drive the first driving rack to slide inside the shell, and the first driving rack is meshed with the rotating gear.
[0006] As a preferred embodiment of the present invention, the driving mechanism includes a mounting sleeve, a first gear, at least two second gears and a first threaded rod, the mounting sleeve is fixedly connected to one side of the shell, the first gear and the second gear are both located in the mounting sleeve and are rotatably connected to the outside of the shell, the first gear and the second gear are meshed, the first threaded rod is located inside the shell, and one end of the first threaded rod extends to the outside of the shell and is fixedly connected to the second gear, a first threaded hole is opened inside the first drive rack, and the first threaded rod is threadedly connected to the first threaded hole.
[0007] As a preferred embodiment of the present invention, it also includes a sliding column, a supporting assembly and a sliding drive assembly. A mounting hole connecting the inside and outside of the shell is opened at the bottom of the shell. The sliding column is slidably connected to the mounting hole. The supporting assembly is arranged at one end of the sliding column away from the first driving rack. The supporting assembly can support the equipment. The sliding drive assembly is arranged inside the shell. The sliding drive assembly is transmission-connected to the sliding column. The sliding drive assembly can drive the sliding column to slide up and down in the mounting hole.
[0008] As a preferred embodiment of the present invention, the sliding drive assembly includes a third gear, a rotating rod, a second threaded rod and a second driving rack, a sliding groove is opened on the first driving rack, the third gear is slidably connected in the sliding groove and can rotate in the sliding groove, the second driving rack is fixedly connected in the sliding groove, and the second driving gear is meshed with the third gear, one end of the rotating rod is fixedly connected to the top of the inner wall of the shell, the other end of the rotating rod is fixedly connected to the third gear, the second threaded rod is fixedly connected to the bottom of the third gear, a second threaded hole is opened inside the sliding column, and the second threaded rod is threadedly connected to the second threaded hole.
[0009] As a preferred embodiment of the present invention, the support assembly includes a pressure spring, a mounting column, a push plate and a support seat, the push plate is fixedly connected to the end of the sliding column away from the third gear, the mounting column is fixedly connected to the bottom of the push plate, a limiting hole is provided on the support seat, the mounting column is slidably inserted in the limiting hole, and the sliding range is limited, the pressure spring is sleeved on the outside of the mounting column, and the two ends of the pressure spring are respectively fixedly connected to the push plate and the support seat.
[0010] As a preferred embodiment of the present invention, it also includes a shell and a magnet, the shell covers the outside of the shell, the magnet is fixedly connected to a side of the top plate away from the first gear, and the magnet is also fixedly connected to the joint between the shell and the side of the top plate.
[0011] As a preferred embodiment of the present invention, it also includes a rotating wheel and a limit block, the rotating wheel is located on the side of the mounting sleeve away from the shell, and the side of the rotating wheel close to the mounting sleeve extends into the mounting sleeve and is fixedly connected to the first gear, and the limit block is fixedly connected to the inside of the shell and faces the laser hole.
[0012] A length laser measurement method based on optical measurement comprises the following steps: During the preparation stage, the laser emitter is set to a horizontal orientation. When measurement is required, the device is stably placed under the special structure to be measured and slides into it from one side. At this time, the position of the top plate is adjusted so that it is close to the side of the laser emitter and docked with the side wall of the special structure, while ensuring that the top edge of the shell is tightly fitted with the horizontal opening of the special structure. Subsequently, the laser emitter is started through the controller to emit a laser beam in the horizontal direction, measure and record the length data in this direction, which will be displayed instantly on the controller screen. In addition, the distance between the top plate and the laser emitter in the horizontal state is fixed. Combined with the close fit between the top plate and the side wall of the special structure, the controller can accurately calculate the horizontal distance from the outside of the special structure to its internal boundary. After completing the horizontal measurement, the device remains in place and pushes the first drive rack to slide along the preset track through the internal drive mechanism. This action drives the The tightly meshed rotating gears rotate, thereby causing the laser emitter to rotate smoothly from a horizontal state to a vertical state. When the first drive rack reaches the limit of its stroke, the laser emitter is completely in a vertical position. At this time, the laser emitter is started again through the controller to measure the length in the vertical direction. The measurement results are also displayed on the controller in real time. Since the top of the shell is horizontally aligned with the measurement starting point of the laser emitter in the vertical state, and the shell fits tightly to the horizontal opening of the special structure, the vertical distance data displayed by the controller is the height from the top of the special structure opening to the top of its interior. Then, the distance from the top of the special structure opening to the ground is measured, and the distance from the top of the special structure interior to the ground is added to the vertical distance data. Finally, the equipment is smoothly taken out from the inside of the special structure, and the laser emitter is restored to its initial horizontal state through the reverse drive mechanism for the next measurement.
[0013] Compared with the prior art, the present invention has the following beneficial effects: When the present invention is used, the laser transmitter is initially placed horizontally. During measurement, the device is placed above the ground, and the side of the laser transmitter enters the interior of the special structure. One side of the top plate is in contact with the side of the special structure, and the surface of the shell is in contact with the horizontal opening wall of the special structure. The laser transmitter is controlled to work by an external controller, and the horizontal straight line length is measured, and the result is displayed on the controller. The distance from one side of the top plate to the starting point of the laser transmitter measurement is constant, and the controller calculates the distance from the outside to the inner wall of the special structure. After the horizontal measurement, the device position is maintained, the first drive rack is driven to slide, the rotating gear is rotated, and the laser transmitter is turned from horizontal to vertical. The first drive rack is at the limit position, the laser transmitter is completely vertical, and the controller controls the measurement of the vertical length and uploads the result. The shell surface is flush with the starting point of the vertical measurement of the laser transmitter, and the controller receives data, namely, the distance from the opening wall of the special structure to the internal upper surface. The distance from the opening wall of the special structure to the ground is easy to measure, and the device measurement data is added to it, namely, the length from the inner wall to the ground. After the measurement is completed, the device is taken out of the special structure, the laser transmitter is reset, and ready for the next measurement. The device control operation is all outside the special structure, which improves the convenience of operation. Rotate the laser transmitter to complete multi-directional measurement to ensure accurate and comprehensive data and avoid property losses due to errors. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the structure provided by an embodiment of the present invention; Figure 2 It is a schematic diagram of the matching structure of the shell and the housing provided by an embodiment of the present invention; Figure 3 is a schematic diagram of the structure after the shell is removed provided by an embodiment of the present invention; Figure 4 is a full cross-sectional view of the device provided by the embodiment of the present invention when performing measurement work; Figure 5 The embodiment of the present invention provides Figure 4 A partial enlarged view of the middle A; Figure 6 It is a schematic diagram of the internal structure of a housing provided by an embodiment of the present invention; Figure 7 is a schematic diagram of the internal structure of the housing providing another perspective according to an embodiment of the present invention; Figure 8 is a schematic diagram of the structure after the shell and the outer shell are removed provided by an embodiment of the present invention; Fig. 9 is a schematic structural diagram of another viewing angle after the shell and the outer shell are removed provided by an embodiment of the present invention; Fig.10 The embodiment of the present invention provides Fig. 9 A partial enlarged view of point B in the middle; Fig.11 It is a schematic diagram of the matching structure of the support assembly and the sliding drive assembly provided by an embodiment of the present invention; Fig.12 It is a schematic diagram of the matching structure of the second driving rack and the third gear provided in an embodiment of the present invention.
[0015] In the figure: 1. shell; 2. controller; 3. laser transmitter; 4. rotating gear; 5. top plate; 6. first drive rack; 7. mounting sleeve; 8. first gear; 9. second gear; 10. first threaded rod; 11. sliding column; 12. third gear; 13. rotating rod; 14. second threaded rod; 15. second drive rack; 16. pressure spring; 17. mounting column; 18. push plate; 19. support seat; 20. shell; 21. magnet; 22. rotating wheel; 23. limit block. DETAILED DESCRIPTION
[0016] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.
[0017] The structure of the present invention is described in detail below in conjunction with the accompanying drawings.
[0018] refer to Figures 1 to 12 , a length laser measuring instrument and measuring method based on optical measurement provided by an embodiment of the present invention include a shell 1 and a controller 2, wherein the controller 2 is fixedly connected to one side of the shell 1, and further includes a laser emitter 3, a rotating gear 4, a top plate 5, a first driving rack 6 and a driving mechanism, wherein the rotating gear 4 is rotatably connected to the inside of the shell 1, the laser emitter 3 is located inside the shell 1 and is fixedly connected to the rotating gear 4, a laser hole for passing the laser beam is opened on the outside of the shell 1, the top plate 5 is fixedly connected to the top of the shell 1, the driving mechanism is arranged on one side of the shell 1, the first driving rack 6 is arranged inside the shell 1, the driving mechanism can drive the first driving rack 6 to slide inside the shell 1, and the first driving rack 6 is meshed with the rotating gear 4.
[0019] When in use, in the initial state, the laser emitter 3 is placed horizontally. When measurement is required, the device is placed above the ground so that it enters the special structure to be measured from the side, and then the side of the top plate 5 close to the laser emitter 3 is fitted with the side of the special structure, and the upper surface of the shell 1 is fitted with the horizontal opening wall of the special structure. Then, the laser emitter 3 can be controlled by the controller 2 on the outside to measure the length of the horizontal straight line. The measurement result will be transmitted to the controller 2 for display. In addition, the top plate 5 is close to the laser emitter 3 until the laser is in the horizontal state. The distance between the measurement starting points of the transmitter 3 is constant, and because the side of the top plate 5 close to the laser transmitter 3 is in contact with the side of the special structure, after the controller 2 receives the horizontal measurement result of the laser transmitter 3, it will perform mathematical operations to obtain the specific distance from the outside of the special structure to its inner wall. When the horizontal length measurement is completed, the position of the device is kept unchanged, and then the first driving rack 6 is driven to slide through the driving mechanism, thereby driving the rotating gear 4 meshed with it to rotate, and then the rotating gear 4 drives the laser transmitter 3 to move from a horizontal state to a vertical state. When the first driving rack After 6 moves to the extreme position, at this time, the laser emitter 3 is completely vertical, and then the laser emitter 3 can be controlled by the controller 2 to measure the vertical length distance, and the result is uploaded to the controller 2. Moreover, the upper surface of the shell 1 is flush with the measurement starting point of the laser emitter 3 in the vertical state, and because the upper surface of the shell 1 is in contact with the horizontal opening wall of the special structure, the distance data received by the controller 2 at this time is the actual distance from the opening wall of the special structure to its internal upper surface. Because the distance from the opening wall of the special structure to the ground is easier to measure, it is only necessary to add the measurement data of the device to the measurement distance from the opening wall of the special structure to the ground to obtain the length distance from the inner wall of the special structure to the ground. When the measurement is completed, the device is taken out from the inside of the special structure, and the laser emitter 3 is reset to perform another measurement. Through this setting, the special structure can be measured better. At the same time, the control and operation of the device can be completed outside the special structure, which can effectively improve the convenience of operation of the device. Moreover, by rotating the laser emitter 3, multi-directional measurement can be easily completed, thereby obtaining more accurate and comprehensive measurement data, and preventing property losses caused by large measurement data errors.
[0020] Furthermore, the driving mechanism includes a mounting sleeve 7, a first gear 8, at least two second gears 9 and a first threaded rod 10, the mounting sleeve 7 is fixedly connected to one side of the shell 1, the first gear 8 and the second gear 9 are both located in the mounting sleeve 7, and are both rotatably connected to the outside of the shell 1, the first gear 8 and the second gear 9 are meshed, the first threaded rod 10 is located inside the shell 1, and one end of the first threaded rod 10 extends to the outside of the shell 1 and is fixedly connected to the second gear 9, a first threaded hole is opened inside the first drive rack 6, and the first threaded rod 10 is threadedly connected to the first threaded hole.
[0021] During use, after completing the horizontal measurement, keep the original position of the device unchanged, and then rotate the first gear 8, the first gear 8 will drive the second gear 9 to rotate, and the rotation of the second gear 9 will drive the first threaded rod 10 to rotate, because the first threaded rod 10 is threadedly connected to the first drive rack 6, and the number of first threaded rods 10 is at least two, which will limit the rotation of the first drive rack 6. Therefore, when the first threaded rod 10 is rotated, it will push the first drive rack 6 to slide through the thread action, thereby driving the rotating gear 4 to drive the laser emitter 3 to rotate to the vertical direction. When the device completes the measurement, rotate the first gear 8 in the reverse direction, and the first gear 8 will drive the above-mentioned components in the reverse direction to reset, thereby resetting the laser emitter 3 to the horizontal direction. Through this setting, the measurement direction of the laser emitter 3 can be adjusted by rotating the first gear 8 externally, which can effectively improve the operation convenience of the device and ensure that the device has a better measurement effect.
[0022] Furthermore, it also includes a sliding column 11, a supporting assembly and a sliding drive assembly. A mounting hole connecting the inside and outside of the shell 1 is opened at the bottom of the shell 1. The sliding column 11 is slidably connected to the mounting hole. The supporting assembly is arranged at the end of the sliding column 11 away from the first driving rack 6. The supporting assembly can support the equipment. The sliding drive assembly is arranged inside the shell 1. The sliding drive assembly is transmission-connected to the sliding column 11. The sliding drive assembly can drive the sliding column 11 to slide up and down in the mounting hole. The sliding drive assembly includes a third gear 12, a rotating rod 13, a second threaded rod 14 and a second driving rack 15. A sliding groove is opened on the first driving rack 6. The third gear 12 is slidably connected to the sliding groove and can rotate in the sliding groove. The second driving rack 15 is fixedly connected to the sliding groove, and the second driving gear is connected to the third gear 12. The third gear 12 is meshed, one end of the rotating rod 13 is fixedly connected to the upper part of the inner wall of the shell 1, and the other end of the rotating rod 13 is fixedly connected to the third gear 12, and the second threaded rod 14 is fixedly connected to the lower part of the third gear 12. A second threaded hole is opened inside the sliding column 11, and the second threaded rod 14 is threadedly connected to the second threaded hole. The support assembly includes a pressure spring 16, a mounting column 17, a push plate 18 and a support seat 19. The push plate 18 is fixedly connected to one end of the sliding column 11 away from the third gear 12, and the mounting column 17 is fixedly connected to the lower part of the push plate 18. A limiting hole is opened on the support seat 19, and the mounting column 17 is slidably inserted in the limiting hole and its sliding range is limited. The pressure spring 16 is sleeved on the outer side of the mounting column 17, and the two ends of the pressure spring 16 are respectively fixedly connected to the push plate 18 and the support seat 19.
[0023] When in use, in the initial state, the first drive rack 6 is not engaged with the rotating gear 4, and there is a predetermined distance between it and the rotating gear 4. When measurement is required, the device is placed above the ground. At this time, the support seat 19 will support the entire device, and then the device is pushed horizontally into the special structure. During this process, if the distance between the upper surface of the device's shell 1 and the ground is greater than the distance from the opening wall of the special structure to the ground, then before pushing the device in, it is necessary to first press hard on the top of the shell 1, so that the support seat 19 below is subjected to force and compresses the pressure spring 16, and then maintain this state, push the device into the special structure, and stop pressing the upper surface of the shell 1. At this time, the upper surface of the shell 1 will be in contact with the opening of the special structure under the action of the reset force of the pressure spring 16. The surface of the mouth wall is fitted, and then the position of the equipment is adjusted so that the side of the top plate 5 close to the rotating gear 4 is fitted with the outer surface of the special structure. When the fitting is completed, the first gear 8 is rotated, and the first gear 8 will drive the first driving rack 6 to slide. Because the second driving rack 15 is fixedly connected to the first driving rack 6, the first driving rack 6 will simultaneously drive the second driving rack 15 to slide. The second driving rack 15 will drive the third gear 12 meshing with it to rotate while sliding. The rotation of the third gear 12 will drive the second threaded rod 14 to rotate. Because the second threaded rod 14 is threadedly connected to the sliding column 11, the second threaded rod 14 rotates, which will push the sliding column 11 to slide downward through the threaded action, so that the sliding column 11 extends from the bottom of the housing 1. Because at this time the upper surface of the shell 1 has been subjected to the restoring force of the pressure spring 16 and is in contact with the opening wall of the special structure, when the sliding column 11 extends out from the inside of the shell 1, it will drive the push plate 18 to press the pressure spring 16, thereby increasing the restoring force of the pressure spring 16, so that the support seat 19 and the upper surface of the shell 1 can be more tightly fitted with the ground and the opening wall, preventing the device from being displaced during measurement and affecting the measurement result. When the first drive rack 6 slides to the position where it will mesh with the rotating gear 4, the third gear 12 slides out from the opening on the side of the first drive rack 6 relative to the first drive rack 6, and the third gear 12 is no longer meshed with the second drive rack 15. At this time, the device is stably placed under the push of the pressure spring 16, and the rotation of the first gear is stopped at the same time. 8 can be used for horizontal measurement. When the measurement is completed, continue to rotate the first gear 8 to make the first drive rack 6 mesh with the rotating gear 4, so as to change the direction of the laser emitter 3. When all measurements are completed, reverse rotation of the first gear 8 can reverse the above steps to drive the laser emitter 3 and the sliding column 11 to reset, and at the same time reduce the pressure on the pressure spring 16. When the first drive rack 6 is reset to the initial position, the device can be pulled out of the special structure. If the distance between the upper surface of the shell 1 of the device and the ground is smaller than the distance from the opening wall of the special structure to the ground, then there is no need to press the upper part of the shell 1 before pushing the device in, and the device can be directly placed between the opening wall and the ground, and the upper surface of the shell 1 does not fit the opening wall. At this time,It is necessary to control the position of the device by hand, and then rotate the first gear 8 to drive the sliding column 11 to slide down. Because the upper surface of the shell 1 is not in contact with the opening wall at this time, the sliding column 11 will not compress the pressure spring 16 when it slides down. Instead, it will drive the shell 1 to rise in the opposite direction. When the shell 1 rises to a position in contact with the opening wall, adjust the position of the device so that the side of the top plate 5 close to the rotating gear 4 is in contact with the outer wall of the special structure, and continue to rotate the first gear 8. Because the shell 1 cannot continue to rise at this time, the sliding column 11 continues to slide down and will drive the push plate 18 to compress the pressure spring 16, so that the pressure spring 16 pushes the upper surface of the shell 1 and the support seat 19 in the opposite direction to fit the opening wall and the ground, so as to place the device stably. The subsequent operation is the same as the above steps. After the measurement is completed, the first gear 8 can be rotated in the opposite direction to reset and remove it. In this process, the installation distance that the device can be applied to depends on the actual manufacturing size of the device. Through this setting, the device can be fixed quickly and efficiently to prevent the device from being displaced by a slight external force during measurement, thereby ensuring that the measurement results of the device are accurate.
[0024] Furthermore, it also includes a shell 20 and a magnet 21, the shell 20 covers the outside of the shell 1, the magnet 21 is fixedly connected to the side of the top plate 5 away from the first gear 8, and the magnet 21 is also fixedly connected to the side of the shell 20 and the top plate 5. It also includes a rotating wheel 22 and a limit block 23. The rotating wheel 22 is located on the side of the mounting sleeve 7 away from the shell 1, and the side of the rotating wheel 22 close to the mounting sleeve 7 extends into the mounting sleeve 7 and is fixedly connected to the first gear 8, and the limit block 23 is fixedly connected to the inside of the shell 1 and faces the laser hole.
[0025] During use, after the device completes measurement, the outer shell 20 is put on the outside of the device, and the outer shell 20 is adsorbed on the top of the device by the magnet 21, so as to prevent foreign matter from entering the inside of the device through the laser hole and affecting the operation of the device. The rotating wheel 22 can make the rotation of the first gear 8 more convenient and efficient, and the limit block 23 is used to limit the unnecessary displacement of the laser emitter 3. This setting can make the device more convenient to use, while ensuring the measurement accuracy of the device, and protecting the device to prevent damage to the device and the entry of foreign matter, so as to improve the use effect of the device.
[0026] A length laser measurement method based on optical measurement comprises the following steps: During the preparation stage, the laser emitter 3 is set to a horizontal orientation. When measurement is required, the device is stably placed under the special structure to be measured and slides into it from one side. At this time, the position of the top plate 5 is adjusted so that it is close to one side of the laser emitter 3 and docked with the side wall of the special structure, while ensuring that the top edge of the shell 1 is tightly fitted with the horizontal opening of the special structure. Subsequently, the laser emitter 3 is started through the controller 2 to emit a laser beam in the horizontal direction, measure and record the length data in this direction, which will be displayed instantly on the screen of the controller 2. In addition, the distance between the top plate 5 and the laser emitter 3 in the horizontal state is fixed. Combined with the tight fit between the top plate 5 and the side wall of the special structure, the controller 2 can accurately calculate the horizontal distance from the outside of the special structure to its internal boundary. After completing the horizontal measurement, the device remains in place and pushes the first drive rack 6 to slide along the preset track through the internal drive mechanism. This action drives the The tightly meshed rotating gear 4 rotates, thereby causing the laser emitter 3 to rotate smoothly from a horizontal state to a vertical state. When the first driving rack 6 reaches the limit of its stroke, the laser emitter 3 is completely in a vertical position. At this time, the laser emitter 3 is started again through the controller 2 to measure the length in the vertical direction. The measurement result is also displayed on the controller 2 in real time. Since the top of the shell 1 is horizontally aligned with the measurement starting point of the laser emitter 3 in the vertical state, and the shell fits tightly to the horizontal opening of the special structure, the vertical distance data displayed by the controller 2 is the height from the top of the special structure opening to the top of its interior. Then, the distance from the top of the special structure opening to the ground is measured, and the distance from the top of the special structure interior to the ground is added to the vertical distance data. Finally, the equipment is smoothly taken out from the inside of the special structure, and the laser emitter 3 is restored to its initial horizontal state through the reverse drive mechanism for the next measurement.
[0027] Working principle of the present invention: When in use, the laser emitter 3 is initially placed horizontally. When measuring, the device is placed above the ground, and the side of the laser emitter 3 enters the interior of the special structure. One side of the top plate 5 is in contact with the side of the special structure, and the surface of the shell 1 is in contact with the horizontal opening wall of the special structure. The laser emitter 3 is controlled by the external controller 2 to measure the horizontal straight line length, and the result is displayed on the controller 2. The distance from the side of the top plate 5 to the starting point of the measurement of the laser emitter 3 is constant, and the controller 2 calculates the distance from the outside to the inner wall of the special structure. After the horizontal measurement, the device position is maintained, the first drive rack 6 is driven to slide, the rotating gear 4 is rotated, and the laser emitter 3 is turned from horizontal to vertical. The first drive rack 6 is at the extreme position, the laser emitter 3 is completely vertical, and the controller 2 controls the measurement of the vertical length and uploads the result. The surface of the shell 1 is flush with the starting point of the vertical measurement of the laser emitter 3, and the controller 2 receives the data, which is the distance from the opening wall of the special structure to the internal upper surface. The distance from the opening wall of the special structure to the ground is easy to measure, and the device measurement data is added to it, which is the length from the inner wall to the ground. After the measurement is completed, the device is taken out of the special structure, the laser emitter 3 is reset, and it is ready for the next measurement. The equipment control operation is all outside the special structure, which improves the convenience of operation. The rotating laser transmitter 3 completes multi-directional measurement to ensure accurate and comprehensive data and avoid property losses caused by errors.
[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A length laser measuring instrument based on optical measurement, comprising a housing (1) and a controller (2), wherein the controller (2) is fixedly connected to one side of the housing (1), and characterized in that: It also includes a laser emitter (3), a rotating gear (4), a top plate (5), a first driving rack (6) and a driving mechanism; The rotating gear (4) is rotatably connected to the inside of the shell (1); the laser emitter (3) is located inside the shell (1) and is fixedly connected to the rotating gear (4); a laser hole for the laser beam to pass through is provided on the outside of the shell (1); and the top plate (5) is fixedly connected to the top of the shell (1); The driving mechanism is arranged on one side of the housing (1), and the first driving rack (6) is arranged inside the housing (1). The driving mechanism can drive the first driving rack (6) to slide inside the housing (1), and the first driving rack (6) is meshed with the rotating gear (4).
2. A length laser measuring instrument based on optical measurement as claimed in claim 1, characterized in that: The driving mechanism comprises a mounting sleeve (7), a first gear (8), at least two second gears (9) and a first threaded rod (10); The mounting sleeve (7) is fixedly connected to one side of the housing (1); the first gear (8) and the second gear (9) are both located in the mounting sleeve (7) and are both rotatably connected to the outside of the housing (1); the first gear (8) and the second gear (9) are meshed; The first threaded rod (10) is located inside the housing (1), and one end of the first threaded rod (10) extends to the outside of the housing (1) and is fixedly connected to the second gear (9); a first threaded hole is provided inside the first driving rack (6), and the first threaded rod (10) is threadedly connected to the first threaded hole.
3. A length laser measuring instrument based on optical measurement as claimed in claim 1, characterized in that: It also includes a sliding column (11), a support assembly and a sliding drive assembly; A mounting hole communicating the inside and outside of the housing (1) is provided at the bottom of the housing (1), and the sliding column (11) is slidably connected in the mounting hole; The support assembly is arranged at an end of the sliding column (11) away from the first drive rack (6), and the support assembly can support the device. The sliding drive assembly is arranged inside the housing (1), and the sliding drive assembly is transmission-connected to the sliding column (11), and the sliding drive assembly can drive the sliding column (11) to slide up and down in the mounting hole.
4. A length laser measuring instrument based on optical measurement as claimed in claim 3, characterized in that: The sliding drive assembly comprises a third gear (12), a rotating rod (13), a second threaded rod (14) and a second driving rack (15); The first drive rack (6) is provided with a sliding groove, the third gear (12) is slidably connected in the sliding groove and can rotate in the sliding groove, the second drive rack (15) is fixedly connected in the sliding groove, and the second drive gear is meshed with the third gear (12); One end of the rotating rod (13) is fixedly connected to the upper inner wall of the housing (1), the other end of the rotating rod (13) is fixedly connected to the third gear (12), the second threaded rod (14) is fixedly connected to the lower part of the third gear (12), a second threaded hole is provided inside the sliding column (11), and the second threaded rod (14) is threadedly connected to the second threaded hole.
5. A length laser measuring instrument based on optical measurement as claimed in claim 4, characterized in that: The support assembly comprises a pressure spring (16), a mounting column (17), a push plate (18) and a support seat (19); The push plate (18) is fixedly connected to one end of the sliding column (11) away from the third gear (12), the mounting column (17) is fixedly connected below the push plate (18), the support seat (19) is provided with a limiting hole, the mounting column (17) is slidably inserted into the limiting hole, and the sliding range is limited, the pressure spring (16) is sleeved on the outside of the mounting column (17), and the two ends of the pressure spring (16) are respectively fixedly connected to the push plate (18) and the support seat (19).
6. A length laser measuring instrument based on optical measurement as claimed in claim 2, characterized in that: It also comprises a shell (20) and a magnet (21), wherein the shell (20) covers the outside of the housing (1), and the magnet (21) is fixedly connected to a side of the top plate (5) away from the first gear (8), and the magnet (21) is also fixedly connected to a portion where the shell (20) and the side of the top plate (5) are in contact.
7. A length laser measuring instrument based on optical measurement as claimed in claim 2, characterized in that: It also comprises a rotating wheel (22) and a limiting block (23), wherein the rotating wheel (22) is located on a side of the mounting sleeve (7) away from the housing (1), and a side of the rotating wheel (22) close to the mounting sleeve (7) extends into the mounting sleeve (7) and is fixedly connected to the first gear (8), and the limiting block (23) is fixedly connected to the inside of the housing (1) and faces the laser hole.
8. A length laser measurement method based on optical measurement, characterized in that: Using a length laser measuring instrument based on optical measurement according to any one of claims 1 to 7 comprises the following steps: During the preparation stage, the laser emitter (3) is set to a horizontal orientation. When measurement is required, the device is stably placed under the special structure to be measured and slides into the structure from one side. At this time, the position of the top plate (5) is adjusted so that it is close to the side of the laser emitter (3) and docked with the side wall of the special structure, while ensuring that the top edge of the shell (1) is tightly fitted with the horizontal opening of the special structure. Subsequently, the laser emitter (3) is started by the controller (2) to emit a laser beam in the horizontal direction, measure and record the length data in this direction, and the data is immediately displayed on the screen of the controller (2). In addition, the distance between the top plate (5) and the laser emitter (3) in the horizontal state is fixed. Combined with the tight fit between the top plate (5) and the side wall of the special structure, the controller (2) can accurately calculate the horizontal distance from the outside of the special structure to its internal boundary. After completing the horizontal measurement, the device remains in place and, through the internal drive mechanism, pushes the first drive rack (6) to slide along the preset track. This action drives the The rotating gear (4) tightly meshed with it rotates, thereby causing the laser emitter (3) to rotate smoothly from a horizontal state to a vertical state. When the first drive rack (6) reaches the limit of its travel, the laser emitter (3) is completely in a vertical position. At this time, the laser emitter (3) is started again through the controller (2) to measure the length in the vertical direction. The measurement result is also displayed in real time on the controller (2). Since the top of the shell (1) is horizontally aligned with the measurement starting point of the laser emitter (3) in the vertical state, and the shell is tightly fitted to the horizontal opening of the special structure, the vertical distance data displayed by the controller (2) is the height from the top of the special structure opening to the top of its interior. Then, the distance from the top of the special structure opening to the ground is measured, and added to the vertical distance data to obtain the distance from the top of the interior of the special structure to the ground. Finally, the device is smoothly taken out from the interior of the special structure, and the laser emitter (3) is restored to the initial horizontal state through the reverse drive mechanism for the next measurement.