Laser measuring instrument and method for ploughing

Abstract

The invention discloses a laser measuring instrument and method for ploughing. The laser measuring instrument comprises a machine body internally provided with a laser device, a focusing hand wheel, a rotating disc, a promoting wheel, a rotating plate, a sleeve, a movable column and a limiting plate. When the focusing hand wheel rotates, the limiting plate abuts against and limits the promoting wheel, and the promoting wheel doing circular motion drives the rotating disc to rotate rapidly relative to the focusing hand wheel through the driving piece. When the focusing hand wheel moving upwards rotates, the movable column is in butt joint with the sleeve, and under the action of the driving piece, the promoting wheel in circular motion synchronously rotates to drive the rotating disc to slowly rotate relative to the focusing hand wheel. Free switching between fast focusing (when the focusing hand wheel rotates, the promoting wheel drives the rotating disc to rotate fast) and slow focusing (when the focusing hand wheel moves upwards, the promoting wheel rotates synchronously to drive the rotating disc to rotate slowly) is achieved. And the focal length can be quickly and preliminarily adjusted, and the measurement time is greatly shortened through low-speed focusing and accurate positioning.

Description

Technical Field

[0001] This invention relates to the field of laser measuring instrument structure technology, specifically to a laser measuring instrument and method for arable land. Background Technology

[0002] In agriculture, accurate measurement of arable land area is fundamental to the scientific planning of planting, irrigation, and fertilization. Traditional measurement methods rely on manual string lines, pacing, or simple tools, which are inefficient, prone to errors, and limited by terrain. With the development of laser technology, laser rangefinders are gradually being applied to agriculture, but existing equipment has the following problems: When focusing, existing laser measuring instruments require repeated rotation of the focusing handwheel for manual focusing. The adjustment efficiency of the focusing handwheel cannot be adjusted, and it is impossible to switch between fast and slow focusing quickly, which is time-consuming and makes it difficult to accurately control the focal length, especially in complex terrain.

[0003] Therefore, we propose a laser measuring instrument and method for arable land. Summary of the Invention

[0004] The purpose of this invention is to provide a laser measuring instrument for arable land to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides a laser measuring instrument for cultivated land, comprising: a body having a laser device internally disposed therein, wherein a focusing handwheel is rotatably connected to the body; It also includes a turntable that is connected and fixed to the adjustment wheel of the laser device. An accelerator wheel is rotatably fitted at the edge of the turntable. A rotating plate is provided at the bottom of the turntable. A sleeve that is connected and fixed to the accelerator wheel is rotatably connected to the end of the rotating plate. A movable column is provided inside the sleeve. A limiting plate that presses against the accelerator wheel is connected to the rotating plate through a movable part. It also includes a drive component. When the self-rotating focusing handwheel is rotated, the limit plate presses against and restricts the promoting wheel. The drive component causes the promoting wheel, which is making circular motion, to drive the turntable to rotate rapidly relative to the focusing handwheel. When the upward-moving focusing handwheel rotates, it causes the movable column to engage with the sleeve. Under the action of the driving component, the circumferential motion accelerator wheel rotates synchronously, causing the turntable to rotate slowly relative to the focusing handwheel.

[0006] Furthermore, the driving component includes a rotating shaft that moves through the center of the turntable. A first gear is fixedly connected to the bottom end of the rotating shaft, and the bottom end of the rotating shaft is fixedly connected to the body of the machine. An internal gear ring is fixedly connected to the inner ring of the adjusting handwheel. A second gear meshes between the internal gear ring and the first gear, and the second gear is fixedly connected to the movable column.

[0007] Furthermore, there are two rotating plates. One end of the rotating plate at the bottom position is slidably engaged with the rotating shaft, and the other end is rotatably connected to the movable column. The two ends of the rotating plate at the top position are rotatably connected to the rotating shaft and the movable column, respectively.

[0008] Furthermore, the movable component includes a fixed plate that is connected and fixed to the rotating plate located at the bottom position. The fixed plate is slidably engaged with the rotating plate located at the top position. A plug rod that extends out of the fixed plate is hooked inside the fixed plate by a tension spring. The limiting plate is connected and fixed to multiple plug rods.

[0009] Furthermore, a limiting ring is fixedly connected to the edge of the focusing handwheel, extending into a pre-reserved groove inside the machine body. A compression spring is fixedly connected to the limiting ring, and a sliding disc that slides within the pre-reserved groove is fixedly connected to the top of the compression spring.

[0010] Furthermore, the end of the limiting plate is provided with an elastic extrusion piece, and the contact surface between the elastic extrusion piece and the top of the sleeve is a friction surface.

[0011] Furthermore, the top edge of the movable column is provided with multiple inclined surfaces, the inside of the sleeve is a frustum structure, and the inner wall of the sleeve is in abutting fit with the top of the movable column.

[0012] Furthermore, an L-shaped rod is fixedly connected to the top surface of the first gear, and the other end of the L-shaped rod is fixedly connected to the machine body. An annular groove is provided in the focusing handwheel to slide with the bottom of the movable column, and an anti-slip plate is fixedly connected to the bottom of the movable column.

[0013] The method for using a laser measuring instrument for arable land, based on the aforementioned laser measuring instrument for arable land, specifically includes the following steps; S1. Preparation: Set up the machine on the ridge of the cultivated field, and adjust and fix the height and angle of the machine. S2. Quick Focus Adjustment: The self-rotating focus adjustment handwheel disengages the movable column from the sleeve. The second gear rotates while making circular motion, driving the rotating plate to rotate. Through the limitation of the limit plate, the promoting wheel makes circular motion. The position of the promoting wheel relative to the limit plate is fixed. The promoting wheel, which makes circular motion, drives the turntable to quickly rotate from its original position.

[0014] S3. Slowly adjust the focus: Move the focusing handwheel upwards so that the top surface of the focusing handwheel contacts the machine body, causing the movable column to move upwards and engage with the sleeve. The upward-moving limit plate moves away from the promoting wheel and the sleeve. Then, by rotating the focusing handwheel, the second gear and the accelerator wheel rotate synchronously in a circular motion due to the constraint of the fixed first gear, thereby causing the turntable meshing with the accelerator wheel to rotate slowly. Compared with the prior art, the beneficial effects of the present invention are: Through the innovative mechanical structure of the focusing handwheel, the system enables free switching between fast focusing (when the focusing handwheel rotates, it promotes the wheel to drive the turntable to rotate rapidly) and slow focusing (after the focusing handwheel moves upward, it promotes the wheel to rotate synchronously, driving the turntable to rotate slowly). This solves the problem of traditional laser measuring instruments requiring repeated rotation of the handwheel and having no adjustable focusing efficiency. Especially in complex terrains (such as slopes and uneven fields), it can quickly complete the initial focus adjustment and then accurately position the object through slow focusing, significantly shortening the measurement time.

[0015] In fast mode, the rotation speed of the focusing handwheel is amplified by the gear ratio, which increases the rotation speed of the turntable by several times, enabling rapid focus adjustment. In fine-tuning mode, the second gear performs differential transmission around the fixed first gear, reducing the rotation speed of the turntable and achieving more precise focus adjustment per turn of the handwheel (improved resolution). This device balances efficiency and accuracy, meeting the dual requirements of rapid response and accuracy in agricultural measurement. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the mating structure between the body and the focusing handwheel of the present invention; Figure 3 This is a side view schematic diagram of the cooperation structure between the main body and the focusing handwheel of the present invention; Figure 4 This is a schematic diagram showing the disassembled structure of the main body and the focusing handwheel of the present invention; Figure 5 This is a schematic diagram of the cooperation structure between the focusing handwheel, the turntable, and the promoting wheel of the present invention; Figure 6 This is a cross-sectional structural diagram of the focusing handwheel of the present invention; Figure 7 This is a front view schematic diagram of the cooperation structure between the focusing handwheel, the turntable, and the promoting wheel of the present invention; Figure 8 This is a schematic cross-sectional view of the turntable, the promoting wheel, and the first and second gears of the present invention. Figure 9 This is a schematic diagram of the mating structure of the turntable, the promoting wheel, the first gear, and the second gear of the present invention; Figure 10 This is a front view schematic diagram of the mating structure of the turntable, the promoting wheel, the first gear, and the second gear of the present invention; Figure 11 This is a schematic diagram showing the disassembled structure of the turntable, the promoting wheel, the first gear, and the second gear of the present invention; Figure 12 This is a schematic diagram of the disassembled structure of the movable component of the present invention; Figure 13 This is a schematic diagram of the fit between the sleeve and the movable column of the present invention.

[0017] In the diagram: 1. Body; 2. Focusing handwheel; 3. Turntable; 4. Propeller wheel; 5. Rotating plate; 6. Sleeve; 7. Movable column; 8. Limiting plate; 9. Rotating shaft; 10. First gear; 11. Internal gear ring; 12. Second gear; 13. Fixing plate; 14. Tension spring; 15. Insert rod; 16. Limiting ring; 17. Compression spring; 18. Slide plate; 19. Elastic compression plate; 20. Inclined surface; 21. L-shaped rod; 22. Annular groove; 23. Anti-detachment plate; 24. Connecting rod. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-13 The present invention provides a laser measuring instrument for cultivated land, comprising: a body 1 having a laser device inside, wherein a focusing handwheel 2 is rotatably connected to the body 1; It also includes a turntable 3 that is connected and fixed to the adjustment wheel of the laser device. An accelerator wheel 4 is rotatably fitted at the edge of the turntable 3. A rotating plate 5 is provided at the bottom of the turntable 3. A sleeve 6 that is connected and fixed to the accelerator wheel 4 is rotatably connected to the end of the rotating plate 5. A movable column 7 is provided inside the sleeve 6. A limiting plate 8 that is pressed against the accelerator wheel 4 is connected to the rotating plate 5 through a movable part. Multiple connecting rods 24 are fixedly connected to the edge of the turntable 3. The connecting rods 24 are connected and fixed to the adjustment wheel of the laser device. The rotation of the adjustment wheel adjusts the focal length of the laser device. It also includes a driving component. When the self-rotating focusing handwheel 2 is rotated, the limiting plate 8 presses against the limiting promoting wheel 4. The driving component causes the promoting wheel 4, which is making circular motion, to drive the turntable 3 to rotate rapidly relative to the focusing handwheel 2. When the upward-moving focusing handwheel 2 rotates, the movable column 7 engages with the sleeve 6, and under the action of the driving component, the circumferential motion promoting wheel 4 rotates synchronously, causing the turntable 3 to rotate slowly relative to the focusing handwheel 2.

[0020] The driving component includes a rotating shaft 9 that moves through the center of the turntable 3. A first gear 10 is fixedly connected to the bottom end of the rotating shaft 9. The bottom end of the rotating shaft 9 is fixedly connected to the body 1. An internal gear ring 11 is fixedly connected to the inner ring of the adjusting handwheel. A second gear 12 meshes between the internal gear ring 11 and the first gear 10. The second gear 12 is fixedly connected to the movable column 7. The connection and fixation of the second gear 12 and the movable column 7 form a planetary gear transmission system. The planetary gear structure allows the second gear 12 to simultaneously revolve around the first gear 10 and rotate on its own axis. The focusing speed in fast mode is increased by 3 times, and the resolution in fine-tuning mode is improved.

[0021] There are two rotating plates 5. One end of the rotating plate 5 located at the bottom position is slidably engaged with the rotating shaft 9, and the other end is rotatably connected to the movable column 7. The two ends of the rotating plate 5 located at the top position are rotatably connected to the rotating shaft 9 and the movable column 7, respectively.

[0022] The movable component includes a fixed plate 13 that is connected and fixed to the rotating plate 5 located at the bottom. The fixed plate 13 is slidably engaged with the rotating plate 5 located at the top. A plug rod 15 is attached to the fixed plate 13 by a tension spring 14. The limiting plate 8 is connected and fixed to multiple plug rods 15. The plug rods 15 are slidably engaged with the fixed plate 13, and the limiting plate 8 facilitates a tight fit with the sleeve 6.

[0023] A limiting ring 16 is fixedly connected to the edge of the focusing handwheel 2, which extends into a pre-reserved groove inside the body 1. A compression spring 17 is fixedly connected to the limiting ring 16. A sliding plate 18 that slides in the pre-reserved groove is fixedly connected to the top of the compression spring 17, ensuring that the focusing handwheel 2 moves upward without affecting the rotation of the focusing handwheel 2.

[0024] The end of the limiting plate 8 is provided with an elastic extrusion plate 19. The contact surface between the elastic extrusion plate 19 and the top of the sleeve 6 is a friction surface, which ensures the limiting effect on the promoting wheel 4 and reduces slippage.

[0025] The top edge of the movable column 7 is provided with multiple inclined surfaces 20, and the inside of the sleeve 6 is a frustum structure. The inner wall of the sleeve 6 is pressed against the top of the movable column 7. After the movable column 7 is inserted into the sleeve 6, the inner walls of the two press against each other to form a mechanical self-locking mechanism.

[0026] An L-shaped rod 21 is fixedly connected to the top surface of the first gear 10. The other end of the L-shaped rod 21 is fixedly connected to the body 1. It is worth noting that the L-shaped rod 21 will not contact the rotating plate 5. When the rotating plate 5 moves up and down along the rotating shaft 9, it will not contact the L-shaped rod 21. Furthermore, when the fixed plate 13 makes a circular motion, it will not touch the L-shaped rod 21.

[0027] The focusing handwheel 2 has an annular groove 22 that slides with the bottom of the movable column 7, and the bottom of the movable column 7 is fixedly connected with an anti-slip plate.

[0028] The method for using a laser measuring instrument for arable land, based on the aforementioned laser measuring instrument for arable land, specifically includes the following steps; S1. Preparation: Horizontally set up the machine body 1 on the edge of the cultivated field. Adjust the machine body 1 to a horizontal state using the level at the bottom of the machine body 1, and lock the bracket to ensure the stability of the equipment during the measurement process, thus completing the equipment setup.

[0029] Initial state check: Confirm that the focusing handwheel 2 is in the initial position. At this time, the moving column 7 is disengaged from the sleeve 6, and the limiting plate 8 is in contact with the edge of the promoting wheel 4. S2. Quick focus adjustment: Rotating focus adjustment handwheel 2: Rotate the focus adjustment handwheel 2 clockwise or counterclockwise. The handwheel drives the second gear 12 to make a circular motion around the rotating shaft 9 through the internal gear ring 11.

[0030] The second gear 12 is fixedly connected to the movable column 7, and when it rotates, it drives the bottom rotating plate 5 to rotate.

[0031] Furthermore, the rotating plate 5 is a two-section design. One end of the bottom rotating plate 5 is slidably connected to the rotating shaft 9, and the other end is rotatably connected to the movable column 7. The two ends of the top rotating plate 5 are rotatably connected to the rotating shaft 9 and the movable column 7, respectively.

[0032] When the rotating plate 5 rotates, it drives the promoting wheel 4 to make a circular motion through the sleeve 6; the limiting plate 8 restricts the axial displacement of the promoting wheel 4 by pressing against the edge of the moving part.

[0033] Among them, the elastic compression piece 19 at the end of the limiting plate 8 contacts the friction surface at the top of the sleeve 6, and the friction force ensures that the promoting wheel 4 does not slip during the circumferential motion.

[0034] The accelerator wheel 4 drives the turntable 3 to rotate rapidly relative to the focusing handwheel 2 through meshing transmission. The turntable 3 is fixedly connected to the adjustment wheel of the laser device, which drives the focal length of the laser device to be quickly adjusted to the approximate range.

[0035] Speed ​​comparison: In fast mode, the rotation speed of dial 3 is many times that of the focusing handwheel 2, which can complete the initial adjustment of focus in a short time.

[0036] Among them, the limiting ring 16 on the edge of the focusing handwheel 2 slides with the reserved groove in the body 1 through the compression spring 17 to absorb the vibration energy during operation and prevent the focus from shifting. The slide plate 18 on the top of the compression spring 17 slides in the reserved groove to further stabilize the axial position of the handwheel and ensure that the focusing process is smooth and without jamming. When the actuating wheel 4 moves to the edge of the sleeve 6, the multi-inclined surface 20 at the top of the movable column 7 presses against the frustum structure of the inner wall of the sleeve 6, forming a mechanical limit to prevent excessive rotation from causing structural damage.

[0037] S3. Slowly adjust the focus: Push the focus adjustment handwheel 2 upward: Push the focus adjustment handwheel 2 upward by hand, so that it moves a certain distance along the axis until the top surface of the handwheel is in contact with the surface of the camera body 1.

[0038] The limiting ring 16 on the edge of the focusing handwheel 2 is inserted into the reserved groove inside the body 1, compressing the spring 17 and storing elastic potential energy for reset. The handwheel moves upward, causing the movable column 7 to slide along the annular groove 22, and its top end is inserted into the sleeve 6, forming a self-locking engagement with the frustum structure of the sleeve 6.

[0039] When the movable column 7 moves upward, the rotating plate 5 pulls the limiting plate 8 away from the promoting wheel 4, releasing the friction restriction; slowly rotate the handwheel clockwise or counterclockwise to drive the second gear 12 to perform planetary motion around the fixed first gear 10; The first gear 10 is fixed to the body 1 and locked by the L-shaped rod 21; the second gear 12 revolves around the first gear 10 and rotates on its own axis, forming a differential transmission; the second gear 12 drives the accelerator wheel 4 to revolve and rotate synchronously through the movable column 7, the accelerator wheel 4 meshes with the edge of the turntable 3, and drives the turntable 3 to rotate slowly.

[0040] Turntable 3 micro-motion control: The rotation speed of turntable 3 is lower than that of the fast mode, enabling more precise focus adjustment with each rotation of the handwheel.

[0041] Among them, the compression spring 17 absorbs the axial vibration when the handwheel rotates through the slide plate 18 to prevent the focus from shifting. The anti-detachment plate 23 at the bottom of the movable column 7 cooperates with the annular groove 22 to prevent the handwheel from being pushed up too much and causing the structure to detach. The frustum structure on the inner wall of the sleeve 6 presses against the multi-inclined surface 20 at the top of the movable column 7 to form a surface contact friction self-locking, ensuring that there is no slippage during the adjustment process. S4. Measurement: The area of ​​cultivated land is measured using a laser device.

[0042] 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.

[0043] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser surveying instrument for cultivated land, including: The machine body (1) is equipped with a laser device, and a focusing handwheel (2) is rotatably connected to the machine body (1). The feature is that it further includes: a turntable (3) fixedly connected to the adjustment wheel of the laser device, an rotatable promoting wheel (4) rotatably fitted at the edge of the turntable (3), a rotating plate (5) provided at the bottom of the turntable (3), a sleeve (6) fixedly connected to the promoting wheel (4) rotatably connected at the end of the rotating plate (5), a movable column (7) provided inside the sleeve (6), and a limiting plate (8) that presses against the promoting wheel (4) connected to the rotating plate (5) through a movable part; It also includes a drive component. When the self-rotating focusing handwheel (2) is rotated, the limiting plate (8) presses against the limiting promoting wheel (4). The drive component causes the promoting wheel (4) that is making circular motion to drive the turntable (3) to rotate rapidly relative to the focusing handwheel (2). When the upward-moving focusing handwheel (2) rotates, the movable column (7) engages with the sleeve (6), and under the action of the driving component, the circumferential motion promoting wheel (4) rotates synchronously, driving the turntable (3) to rotate slowly relative to the focusing handwheel (2).

2. The laser measuring instrument for cultivated land according to claim 1, characterized in that: The driving component includes a rotating shaft (9) that moves through the middle of the turntable (3). A first gear (10) is fixedly connected to the bottom end of the rotating shaft (9). The bottom end of the rotating shaft (9) is fixedly connected to the machine body (1). An internal gear ring (11) is fixedly connected to the inner ring of the adjusting handwheel. A second gear (12) meshes between the internal gear ring (11) and the first gear (10). The second gear (12) is fixedly connected to the movable column (7).

3. The laser measuring instrument for cultivated land according to claim 2, characterized in that: There are two rotating plates (5). One end of the rotating plate (5) located at the bottom position is slidably connected to the rotating shaft (9), and the other end is rotatably connected to the movable column (7). The two ends of the rotating plate (5) located at the top position are rotatably connected to the rotating shaft (9) and the movable column (7) respectively.

4. The laser measuring instrument for cultivated land according to claim 3, characterized in that: The movable component includes a fixed plate (13) that is connected and fixed to the rotating plate (5) located at the bottom position. The fixed plate (13) is slidably engaged with the rotating plate (5) located at the top position. A plug rod (15) that passes through the fixed plate (13) is hooked inside the fixed plate (13) by a tension spring (14). The limiting plate (8) is connected and fixed to multiple plug rods (15).

5. The laser measuring instrument for cultivated land according to claim 4, characterized in that: The focusing handwheel (2) is fixedly connected to a limiting ring (16) that extends into a pre-reserved groove inside the body (1). A compression spring (17) is fixedly connected to the limiting ring (16). A sliding plate (18) that slides in the pre-reserved groove is fixedly connected to the top of the compression spring (17).

6. The laser measuring instrument for cultivated land according to claim 5, characterized in that: The end of the limiting plate (8) is provided with an elastic extrusion plate (19), and the contact surface between the elastic extrusion plate (19) and the top of the sleeve (6) is a friction surface.

7. The laser measuring instrument for cultivated land according to claim 6, characterized in that: The top edge of the movable column (7) is provided with multiple inclined surfaces (20), the inside of the sleeve (6) is a frustum structure, and the inner wall of the sleeve (6) is in abutting fit with the top of the movable column (7).

8. The laser measuring instrument for cultivated land according to claim 7, characterized in that: The top surface of the first gear (10) is fixedly connected to an L-shaped rod (21), and the other end of the L-shaped rod (21) is fixedly connected to the body (1). The focusing handwheel (2) has an annular groove (22) that slides with the bottom of the movable column (7). The bottom of the movable column (7) is fixedly connected to an anti-detachment plate (23).

9. A method for using a laser measuring instrument for arable land, characterized in that, The laser measuring instrument for arable land according to claim 8, specifically includes the following steps; S1. Preparation: Set up the machine body (1) on the ridge of the cultivated field, and adjust and fix the height and angle of the machine body (1); S2, quick focus adjustment: the self-rotating focus adjustment handwheel (2) is used. At this time, the movable column (7) is disengaged from the sleeve (6). The second gear (12) rotates while making circular motion, driving the rotating plate (5) to rotate. Through the restriction of the limiting plate (8), the promoting wheel (4) makes circular motion. The position of the promoting wheel (4) relative to the limiting plate (8) is fixed. The promoting wheel (4) making circular motion drives the turntable (3) to quickly rotate in its original position. S3. Slowly adjust the focus: Move the focusing handwheel (2) upward so that the top surface of the focusing handwheel (2) contacts the body (1), which drives the movable column (7) to move upward and engage with the sleeve (6). The upward-moving limit plate (8) moves away from the promoting wheel (4) and the sleeve (6). Then, turn the focusing handwheel (2). Through the restriction of the fixed first gear (10), the second gear (12) and the actuating wheel (4) rotate synchronously in a circular motion, thereby causing the turntable (3) meshing with the actuating wheel (4) to rotate slowly. S4. Measurement: The area of ​​cultivated land is measured using a laser device.

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