Flatness measuring device for improving cultivated land quality

By designing a rotatable and open protective cover and adjusting the rotary slide, the protection problem of the laser scanner in the non-working state is solved, the safety and efficiency of the measurement device are improved, the measurement range is expanded, and the accuracy of flatness evaluation is improved.

CN120252590AActive Publication Date: 2025-07-04山东省国土空间生态修复中心(山东省地质灾害防治技术指导中心山东省土地储备中心)
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Patent Information

Application Number
CN202510733107.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-04
Publication Date
2025-07-04
Estimated Expiration
2045-06-04

AI Technical Summary

Technical Problem

The existing flatness measuring device lacks effective protection for laser scanning components in non-operating states, which leads to easy damage during handling and transfer, affecting the measurement progress and efficiency.

Method used

A rotatable opening and closing protective cover is designed to automatically open during measurement and automatically close after measurement. It combines the adjustment of the turntable and the adjustment slide to expand the measurement range to ensure the safety of the laser scanner in non-use state.

Benefits of technology

It improves the safety of laser scanners, ensures the continuity and efficiency of measurement work, expands the measurement range and accuracy, and improves the universality and accuracy of farmland flatness evaluation.

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Abstract

The invention provides a flatness measuring device for improving cultivated land quality, and relates to the technical field of measurement, the flatness measuring device comprises a support rod A, the top end of the support rod A is rotatably provided with a connector A; an adjusting motor is fixedly mounted at the top end of the supporting rod B; an adjusting screw rod is fixedly mounted on an output shaft of the adjusting motor; an adjusting head is mounted on the adjusting screw rod through threads; and the top end of the adjusting head is movably connected with a connector B. The two protective covers provide comprehensive protection for the laser scanner in a non-use state, so that the safety performance of the laser scanner in a non-working state is remarkably improved, and possible damage in the carrying and transferring process is effectively prevented; the flatness measuring device solves the problems that automatic storage and protection requirements when a laser scanning part is not used are not fully considered in design of an existing flatness measuring device, and the laser scanning part still lacks effective protection measures in a non-working state of the device.
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Description

Technical Field

[0001] The present invention relates to the technical field of measurement, and particularly to a flatness measurement device for improving cultivated land quality. Background Art

[0002] In order to maintain and improve the quality of cultivated land, it is necessary to use a flatness measurement device to regularly measure the cultivated land and take corresponding land improvement measures according to the measurement results, such as land leveling projects, irrigation and drainage projects, and soil improvement projects. These measures can significantly improve the flatness of cultivated land, improve land use efficiency, and provide a good environment for crop growth. For example, the patent with the application number: CN201810886157.7 discloses a farmland surface flatness measurement system and measurement method, and another example is the patent with the application number: CN201210223607.7, which discloses a surface roughness measurement system and measurement method. Both of the above flatness measurement devices use laser scanning components to accurately evaluate the flatness of cultivated land. However, these devices have a common problem: the laser scanning components are directly exposed to the external environment. When the device needs to be moved or transferred to different measurement locations, this exposed state greatly increases the risk of damage to the laser scanning components. Given that the laser scanning components are the core components for completing the flatness measurement task, once damaged, the entire measurement work will be forced to stop, thus seriously affecting the measurement progress and efficiency. In summary, the existing flatness measurement devices do not fully consider the need for automatic storage and protection when the laser scanning components are not in use. When the device is in a non-working state, the laser scanning components still lack effective protection measures and are easily damaged due to accidental collisions or environmental factors. Summary of the Invention

[0003] Embodiments of the present disclosure relate to a flatness measurement device for improving cultivated land quality. By providing two protective cover shells that can rotate and open and close, the two protective cover shells can automatically open when the measurement slide carriage carries the laser scanner for feeding measurement, so as to avoid the protective cover shells affecting the normal measurement work of the laser scanner. And the two protective cover shells can automatically merge when the measurement slide carriage moves to both ends of the transmission plate body to complete the measurement, surrounding the laser scanner. Thus, when the laser scanner is in a non-use state, the device can protect the laser scanner, improving the safety factor of the laser scanner in the non-use state and avoiding the situation where the measurement progress is delayed due to damage to the laser scanner during handling and transfer.

[0004] In a first aspect of the present disclosure, a flatness measuring device for improving cultivated land quality is provided, specifically including: a support rod A and a support rod B. A connecting head A is rotatably installed at the top of the support rod A; an adjustment motor is fixedly installed at the top of the support rod B; an adjustment screw rod is fixedly installed on the output shaft of the adjustment motor; an adjustment head is installed on the adjustment screw rod through a thread; a connecting head B is movably connected to the top of the adjustment head; a horizontal base is jointly installed at the tops of the connecting head B and the connecting head A; an adjustment sliding seat is sleeved and slidably installed on the horizontal base; a mounting disk body is fixedly installed at the bottom of the adjustment sliding seat; an adjustment turntable is rotatably installed at the bottom of the mounting disk body; two limit insertion holes are formed at the top of the adjustment turntable; a guiding base is fixedly installed on the circumferential outer wall of the adjustment turntable; a driving screw rod is rotatably installed on the guiding base; a driving motor is fixedly installed on one side of the guiding base; the output shaft of the driving motor is connected to one end of the driving screw rod; a transmission plate body is fixedly installed at the bottom end of the guiding base; a restoration guiding groove is formed at the outer end position of the outer side of the transmission plate body; a conversion guiding groove is also formed on the outer side of the transmission plate body; an opening guiding groove is formed at the middle position of the outer side of the transmission plate body; a measuring sliding seat is also sleeved and slidably installed on the transmission plate body; a transmission member is slidably installed inside the measuring sliding seat; a driving rack is fixed to the bottom end of the transmission member; a driven cylinder body is fixedly installed on the outer wall of the transmission member; a laser scanner is fixedly installed at the bottom end of the transmission member; a switching shaft body is rotatably installed on the outer wall of the transmission member; a driven gear is fixedly installed at the outer end of the switching shaft body; a protective cover shell is fixedly installed on the circumferential outer wall of the switching shaft body.

[0005] In at least some embodiments, an inclination sensor is fixedly installed at the top of the horizontal base; the inclination sensor is connected to the adjustment motor through a controller and a circuit.

[0006] In at least some embodiments, a locking bolt is installed on the top of the adjustment sliding seat through a thread; an embedding groove is formed at the front side of the top of the mounting disk body; a limit insertion rod is slidably inserted inside the embedding groove.

[0007] In at least some embodiments, the limit insertion rod is of a cylindrical structure; a retaining disk is fixedly installed on the circumferential outer wall of the limit insertion rod; the retaining disk is of a disk-shaped structure.

[0008] In at least some embodiments, a spring A is jointly embedded between the bottom of the retaining disk and the inner bottom end of the embedding groove; the two limit insertion holes are arranged vertically; the bottom end of the limit insertion rod should be inserted inside the corresponding limit insertion hole.

[0009] In at least some embodiments, the conversion guide groove has an inclined structure; the height of the opening guide groove is lower than that of the restoration guide groove; the highest end of the conversion guide groove is connected to the inner end of the restoration guide groove; the lowest end of the conversion guide groove is connected to the outer end of the opening guide groove.

[0010] In at least some embodiments, the measuring slide is connected to the driving lead screw through a thread; the transmission member has an H-shaped structure; the driven cylinder has a cylindrical structure.

[0011] In at least some embodiments, the driven cylinder is also slidably installed in a guide groove structure composed of a restoration guide groove, a conversion guide groove, and an opening guide groove.

[0012] In at least some embodiments, a spring B is jointly installed between the inner top of the transmission member and the inner bottom end of the measuring slide; the driven gear is meshed and connected to the driving rack.

[0013] In at least some embodiments, when the two protective housing covers are butted, they can surround the laser scanner.

[0014] The present invention provides a flatness measuring device for improving the quality of cultivated land, having the following beneficial effects: 1. The flatness measuring device innovatively designs two rotatable and openable protective housing covers. When the measuring slide carries the laser scanner for feeding measurement, these protective housing covers can automatically open to ensure that the laser scanner can perform accurate measurement without hindrance. When the measuring slide moves to both ends of the transmission plate to complete the measurement task, the two protective housing covers can automatically close and tightly wrap the laser scanner, providing comprehensive protection for the laser scanner in the non-use state. This design significantly improves the safety performance of the laser scanner in the non-working state, effectively preventing possible damage during handling and transfer, thus ensuring the continuity and efficiency of the measurement work.

[0015] 2. The flatness measuring device also cleverly integrates the functional design of the adjustment turntable and the adjustment slide. The adjustment turntable can flexibly adjust the guiding base from horizontal to vertical, and the adjustment slide allows the guiding base to freely slide on the horizontal base to adjust its position. This combined design, together with the design that the driving lead screw can drive the measuring slide and the laser scanner to move, enables the measurement range of this measuring device to be extended to a rectangular area. Compared with the linear measurement method of traditional devices, this device can cover a wider cultivated land range for measurement in a single setup, not only greatly improving the measurement efficiency, but also significantly enhancing the universality and accuracy of the measurement results, providing strong support for the accurate assessment of the flatness of cultivated land. Description of the Drawings

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly introduced below.

[0017] The accompanying drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0018] In the accompanying drawings: Figure 1 A schematic structural diagram of the horizontal base in the lateral state of the present application is shown; Figure 2 A schematic structural diagram of the horizontal base in the longitudinal state of the present application is shown; Figure 3 A schematic structural diagram of the horizontal base in the longitudinal eccentric state of the present application is shown; Figure 4 A schematic structural diagram of the measuring slide in the feeding state of the present application is shown; Figure 5 A schematic structural diagram of the measuring slide in the non-feeding state of the present application is shown; Figure 6 A schematic structural diagram of the protective cover in the open state of the present application is shown; Figure 7 A schematic structural diagram of the protective cover in the closed state of the present application is shown; Figure 8 A schematic structural diagram of the measuring slide in the disassembled state of the present application is shown; List of reference numerals 1. Support rod A; 101. Connector A; 2. Support rod B; 201. Adjustment motor; 202. Adjustment lead screw; 203. Adjustment head; 204. Connector B; 3. Horizontal base; 301. Inclination sensor; 302. Adjustment slide; 303. Locking bolt; 304. Mounting disc; 305. Embedded groove; 306. Limiting insertion rod; 307. Stop disc; 308. Spring A; 309. Adjustment turntable; 3010. Limiting jack; 3011. Guide base; 3012. Driving lead screw; 3013. Driving motor; 3014. Transmission plate; 3015. Restoration guide groove; 3016. Conversion guide groove; 3017. Opening guide groove; 3018. Measuring slide; 3019. Transmission part; 3020. Driving rack; 3021. Driven cylinder; 3022. Spring B; 3023. Laser scanner; 3024. Opening and closing shaft; 3025. Driven gear; 3026. Protective cover. Detailed implementation manners

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions of the embodiments of the present invention in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0020] Please refer to Figures 1 to 8 : Embodiment 1:

[0021] The present invention provides a flatness measuring device for improving cultivated land quality, comprising: a support rod A1 and a support rod B2. A connecting head A101 is rotatably installed at the top end of the support rod A1; an adjustment motor 201 is fixedly installed at the top end of the support rod B2; an adjustment lead screw 202 is fixedly installed on the output shaft of the adjustment motor 201; an adjustment head 203 is installed on the adjustment lead screw 202 through screw threads; the top end of the adjustment head 203 is movably connected to a connecting head B204; a horizontal base 3 is jointly installed at the top ends of the connecting head B204 and the connecting head A101; an adjustment sliding seat 302 is sleeved and slidably installed on the horizontal base 3; an installation disc body 304 is fixedly installed at the bottom of the adjustment sliding seat 302; an adjustment turntable 309 is rotatably installed at the bottom of the installation disc body 304; two limit jacks 3010 are formed at the top of the adjustment turntable 309; a guiding base 3011 is fixedly installed on the circumferential outer wall of the adjustment turntable 309; a driving lead screw 3012 is rotatably installed on the guiding base 3011; a driving motor 3013 is fixedly installed on one side of the guiding base 3011; the output shaft of the driving motor 3013 is connected to one end of the driving lead screw 3012; a transmission plate body 3014 is fixedly installed at the bottom end of the guiding base 3011; a restoring guide groove 3015 is formed at the outer end position of the outer side of the transmission plate body 3014; a conversion guide groove 3016 is also formed at the outer side of the transmission plate body 3014; an opening guide groove 3017 is formed at the middle position of the outer side of the transmission plate body 3014; a measuring sliding seat 3018 is also sleeved and slidably installed on the transmission plate body 3014; a transmission member 3019 is slidably installed inside the measuring sliding seat 3018; a driving rack 3020 is fixed at the bottom end of the transmission member 3019; a driven cylinder body 3021 is fixedly installed on the outer wall of the transmission member 3019; a laser scanner 3023 is fixedly installed at the bottom end of the transmission member 3019; a opening and closing shaft body 3024 is rotatably installed on the outer wall of the transmission member 3019; a driven gear 3025 is fixedly installed at the outer end of the opening and closing shaft body 3024; a protective cover shell 3026 is fixedly installed on the circumferential outer wall of the opening and closing shaft body 3024. By providing two protective cover shells 3026 that can rotate and open and close, the two protective cover shells 3026 can automatically open when the measuring sliding seat 3018 carries the laser scanner 3023 for feeding measurement, avoiding the protective cover shell 3026 from affecting the normal measurement work of the laser scanner 3023. And the two protective cover shells 3026 can automatically merge when the measuring sliding seat 3018 moves to both ends of the transmission plate body 3014 to complete the measurement, surrounding the laser scanner 3023. Thus, when the laser scanner 3023 is in a non-use state, the device can protect the laser scanner 3023, improving the safety factor of the laser scanner 3023 in the non-use state and avoiding the situation that the laser scanner 3023 is damaged during handling and transfer, which delays the measurement progress.

[0022] Embodiment 2: On the basis of Embodiment 1, an inclination sensor 301 is fixedly installed on the top of the horizontal base 3; the inclination sensor 301 is connected to the adjustment motor 201 through a controller and a circuit; a locking bolt 303 is installed on the top of the adjustment slide 302 by means of a thread; an embedding groove 305 is formed in the front side of the top of the mounting disc body 304; a limiting insertion rod 306 is slidably inserted into the inside of the embedding groove 305; the limiting insertion rod 306 is of a cylindrical structure; a retaining disc 307 is fixedly installed on the circumferential outer wall of the limiting insertion rod 306; the retaining disc 307 is of a disc-shaped structure; a spring A 308 is jointly embedded between the bottom of the retaining disc 307 and the inner bottom end of the embedding groove 305; the two limiting insertion holes 3010 are arranged vertically; the bottom end of the limiting insertion rod 306 should be inserted into the inside of the corresponding limiting insertion hole 3010. By providing the adjustment turntable 309 and the adjustment slide 302, the adjustment turntable 309 can convert the guiding base 3011 in the measuring device from transverse to longitudinal, and the adjustment slide 302 can enable the guiding base 3011 in the device to slide along the horizontal base 3 to adjust the position. Thus, in cooperation with the driving lead screw 3012, the measuring slide 3018 and the laser scanner 3023 are driven to move, so that the measuring range of the measuring device is a rectangular structure, improving the measuring range. Compared with the linear measuring method in the comparative document, when the measuring device is erected once, it can measure a larger range of cultivated land. Therefore, the measuring structure has higher universality and the measuring result of the cultivated land flatness is more accurate.

[0023] Embodiment 3. On the basis of Embodiment 2, the conversion guide groove 3016 is in an inclined structure; the height of the opening guide groove 3017 is lower than that of the restoration guide groove 3015; the highest end of the conversion guide groove 3016 is communicated with the inner end of the restoration guide groove 3015; the lowest end of the conversion guide groove 3016 is communicated with the outer end of the opening guide groove 3017; the measuring slide 3018 is connected to the driving lead screw 3012 through threads; the transmission member 3019 is in an H-shaped structure; the driven cylinder 3021 is in a cylindrical structure; the driven cylinder 3021 is also slidably installed in the guide groove structure composed of the restoration guide groove 3015, the conversion guide groove 3016 and the opening guide groove 3017; a spring B3022 is jointly installed between the inner top of the transmission member 3019 and the inner bottom end of the measuring slide 3018; the driven gear 3025 is meshed and connected with the driving rack 3020; when the two protective housing 3026 are butted, the laser scanner 3023 can be surrounded. Insert the support rod A1 and the support rod B2 into the cultivated land to complete the basic erection of the measuring device. Then, the tilt sensor 301 will collect the tilt data of the horizontal base 3 during the basic erection and send an instruction to the adjustment motor 201 through the controller, so that the adjustment motor 201 rotates the adjustment lead screw 202 by an appropriate number of turns according to the instruction, and the adjustment lead screw 202 rotates to adjust the height of one end of the horizontal base 3 by using the adjustment head 203 and the connection head B204 until the horizontal base 3 is in a horizontal state, which is convenient for measuring the horizontal degree of the cultivated land next.

[0024] Working principle of this embodiment: First, set up this measuring device. Insert the support rod A1 and the support rod B2 into the cultivated land to complete the basic setup of this measuring device. Then, the inclination sensor 301 will collect the inclination data of the horizontal base 3 during the basic setup and send an instruction to the adjustment motor 201 through the controller, so that the adjustment motor 201 rotates the adjustment lead screw 202 by an appropriate number of turns according to the instruction. The adjustment lead screw 202 rotates and uses the adjustment head 203 and the connecting head B204 to adjust the height of one end of the horizontal base 3 until the horizontal base 3 is in a horizontal state, thus completing the setup work. Then, start the drive motor 3013, so that the drive motor 3013 drives the drive lead screw 3012 to rotate. The drive lead screw 3012 rotates and drives the measuring slide 3018 to move from one end of the transmission plate body 3014 to the other end. During the movement, the driven cylinder 3021 will gradually slide from the restoration guide groove 3015 into the conversion guide groove 3016 and the opening guide groove 3017. During the sliding process, the transmission member 3019 will drive the drive rack 3020 to descend a certain distance, and the drive rack 3020 will use this distance to drive the driven gear 3025, the opening and closing shaft body 3024, and the protective cover 3026 to rotate, so that the two protective covers 3026 are opened by rotation. At this time, the laser scanner 3023 is exposed, and the laser scanner 3023 measures the flatness of the cultivated land below the travel route. After the measuring slide 3018 drives the laser scanner 3023 to move to the other end of the transmission plate body 3014, the driven cylinder 3021 will gradually slide from the opening guide groove 3017 into the conversion guide groove 3016 and the restoration guide groove 3015 at the other end, so that the transmission member 3019 drives the drive rack 3020 to rise and restore, and at the same time, the protective covers 3026 are restored to be docked to protect the laser scanner 3023 in the non-use state, completing the lateral linear measurement of the cultivated land. Then, the limit insertion rod 306 can be slid upward to disengage it from the inside of a limit insertion hole 3010. At this time, rotate the adjustment turntable 309 to drive the guide base 3011 to rotate 90 degrees to become a longitudinal state, and then loosen the limit insertion rod 306, so that it is inserted into the inside of another limit insertion hole 3010 under the action of the spring A308 to keep the guide base 3011 in the longitudinal state. At this time, the drive motor 3013 can be started continuously to enable the laser scanner 3023 to complete the longitudinal linear measurement. Moreover, the locking bolt 303 can be loosened to enable the adjustment slide 302 to slide horizontally along the horizontal base 3 to adjust the position of the guide base 3011 in the longitudinal state, facilitating the longitudinal linear measurement of more positions of the cultivated land, improving the single measurement range of this device, and ensuring the universality of a single measurement.

[0025] In this article, the following points need to be noted: 1. The drawings of the embodiments of this disclosure only relate to the structures involved in the embodiments of this disclosure, and other structures can refer to the general design.

[0026] 2. Without conflict, the embodiments of the present disclosure and the features in the embodiments may be combined with each other to obtain new embodiments.

[0027] The above is only the specific implementation manner of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should all be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A flatness measuring device for improving the quality of cultivated land, comprising: Support rod A (1) and support rod B (2), a connection head A (101) is rotatably installed at the top of the support rod A (1); an adjustment motor (201) is fixedly installed at the top of the support rod B (2); characterized in that, an adjustment screw rod (202) is fixedly installed on the output shaft of the adjustment motor (201); an adjustment head (203) is installed on the adjustment screw rod (202) through screw threads; the top of the adjustment head (203) is movably connected to a connection head B (204); a horizontal base (3) is jointly installed at the tops of the connection head B (204) and the connection head A (101); an adjustment sliding seat (302) is sleeved and slidably installed on the horizontal base (3); an installation disk body (304) is fixedly installed at the bottom of the adjustment sliding seat (302); an adjustment turntable (309) is rotatably installed at the bottom of the installation disk body (304); a guiding base (3011) is fixedly installed on the circumferential outer wall of the adjustment turntable (309); a transmission plate body (3014) is fixedly installed at the bottom end of the guiding base (3011); a measuring sliding seat (3018) is also sleeved and slidably installed on the transmission plate body (3014); a transmission member (3019) is slidably installed inside the measuring sliding seat (3018); a driven cylinder (3021) is fixedly installed on the outer wall of the transmission member (3019); a laser scanner (3023) is fixedly installed at the bottom end of the transmission member (3019); an opening and closing shaft body (3024) is rotatably installed on the outer wall of the transmission member (3019); a protective cover (3026) is fixedly installed on the circumferential outer wall of the opening and closing shaft body (3024).

2. The flatness measuring device for improving cultivated land quality according to claim 1, characterized in that, An inclination sensor (301) is fixedly installed at the top of the horizontal base (3); the inclination sensor (301) is connected to the adjustment motor (201) through a controller and a circuit.

3. The flatness measuring device for improving cultivated land quality according to claim 2, characterized in that, A locking bolt (303) is installed at the top of the adjustment sliding seat (302) through threads; an embedding groove (305) is opened at the front side of the top of the installation disk body (304); a limiting insertion rod (306) is slidably inserted inside the embedding groove (305).

4. The flatness measuring device for improving cultivated land quality according to claim 3, characterized in that, The limiting insertion rod (306) is of a cylindrical structure; a blocking disk (307) is fixedly installed on the circumferential outer wall of the limiting insertion rod (306); the blocking disk (307) is of a disk-shaped structure; two limiting insertion holes (3010) are opened at the top of the adjustment turntable (309).

5. The flatness measuring device for improving cultivated land quality according to claim 4, characterized in that, A spring A (308) is jointly embedded between the bottom of the blocking disk (307) and the inner bottom end of the embedding groove (305); the two limiting insertion holes (3010) are arranged vertically; the bottom end of the limiting insertion rod (306) should be inserted inside the corresponding limiting insertion hole (3010).

6. The flatness measuring device for improving cultivated land quality according to claim 5, characterized in that, A conversion guide groove (3016) is also formed on the outer side of the transmission plate body (3014); an opening guide groove (3017) is formed at the center position on the outer side of the transmission plate body (3014); the conversion guide groove (3016) is of an inclined structure; a restoration guide groove (3015) is formed at the outer end position of the outer side of the transmission plate body (3014); the height of the opening guide groove (3017) is lower than that of the restoration guide groove (3015); the highest end of the conversion guide groove (3016) is communicated with the inner end of the restoration guide groove (3015); the lowest end of the conversion guide groove (3016) is communicated with the outer end of the opening guide groove (3017).

7. A flatness measuring device for improving cultivated land quality according to claim 6, characterized in that, A driving lead screw (3012) is rotatably installed on the guiding base (3011); a driving motor (3013) is fixedly installed on one side of the guiding base (3011); an output shaft of the driving motor (3013) is connected with one end of the driving lead screw (3012); the measuring slide block (3018) is connected with the driving lead screw (3012) through screw threads; the transmission member (3019) is of an H-shaped structure; the driven cylinder (3021) is of a cylindrical structure.

8. The flatness measuring device for improving cultivated land quality according to claim 7, characterized in that, The driven cylinder (3021) is also slidably installed in a guide groove structure composed of the restoration guide groove (3015), the conversion guide groove (3016) and the opening guide groove (3017); a driving rack (3020) is fixed to the bottom end of the transmission member (3019).

9. The flatness measuring device for improving cultivated land quality according to claim 8, characterized in that, A spring B (3022) is jointly embedded between the inner top of the transmission member (3019) and the inner bottom end of the measuring slide block (3018); the driven gear (3025) is meshed and connected with the driving rack (3020); the outer end of the opening and closing shaft body (3024) is fixedly installed with the driven gear (3025).

10. A flatness measurement device for improving cultivated land quality according to claim 9, characterized in that, When the two protective covers (3026) are butted, the laser scanner (3023) can be surrounded.

Citation Information

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