Rock slope displacement detection device based on double-shaft differential transmission

Abstract

The invention discloses a rock-soil side slope displacement detection device based on double-shaft differential transmission, and relates to the technical field of rock-soil side slope detection, the rock-soil side slope displacement detection device comprises a direct contact side slope rock-soil body detection shaft assembly and a reference shaft assembly buried in a stable bed rock or an undeformed area, when a rock-soil body displaces, the detection shaft generates corresponding linear displacement, and the detection shaft is driven by the reference shaft assembly to move; the displacement directly reflects the deformation condition of a slope rock-soil body, a reference shaft serves as a reference datum, the displacement is extremely small or basically kept unchanged under the normal condition, linear displacement of the double shafts is converted into angle difference, a high-precision absolute encoder is installed on an output shaft of a driving gear, the angle difference is collected in real time and converted into a digital signal, and the digital signal is transmitted to the slope rock-soil body. After the data processing unit obtains signals of the encoder, the displacement difference value of the main shaft and the auxiliary shaft is calculated, the difference value is the actual displacement of the rock-soil slope, and the problems that a traditional rock-soil slope displacement detection device cannot distinguish the displacement of the device and the actual displacement of the slope, and the reliability of a monitoring result is reduced are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of rock and soil slopes, and in particular to a rock and soil slope displacement detection device based on dual-axis differential transmission. Background Art

[0002] A geotechnical slope displacement detection device is a device used to monitor the displacement changes of soil or rock masses in geotechnical slopes in real time. It is usually composed of sensors (such as displacement sensors, inclination sensors, etc.), data acquisition systems, signal transmission modules and data processing terminals. It can be buried or installed at different positions on the slope to continuously sense the slope's tiny displacement, settlement, tilt and other deformation data under the influence of natural factors (such as rainfall, earthquakes) or human activities (such as engineering excavation), and transmit the data in real time to the background system for analysis and processing to warn of the risk of slope instability and provide a scientific basis for slope safety assessment and disaster prevention.

[0003] For example, the Chinese authorized patent "A geotechnical engineering slope displacement detection device" with announcement number CN11411166 6B includes a fixed column, one end of the fixed column is embedded in the upper surface of the supporting circular plate, and the other end of the fixed column is embedded in the lower surface of the top plate. Support blocks are welded at the center of the lower surface of the top plate and the center of the upper surface of the supporting circular plate, and a central sphere is installed between the two support blocks. A displacement detection component is sleeved on the outer side of the central sphere, and the central sphere and the displacement detection component are fixedly connected by multiple connecting shafts set at equal angles. A positioning support column is fixedly installed at the center of the lower surface of the supporting circular plate.

[0004] Although the above-mentioned existing technologies can monitor the displacement of rock and soil slopes, the detection accuracy is poor and it is impossible to distinguish the displacement of the device itself from the actual displacement of the slope, which reduces the reliability of the monitoring results. Therefore, it does not meet the existing needs. In this regard, we propose a rock and soil slope displacement detection device based on dual-axis differential transmission. Summary of the Invention

[0005] The purpose of the present invention is to provide a rock and soil slope displacement detection device based on dual-axis differential transmission to solve the problem proposed in the above background technology that the traditional rock and soil slope displacement detection device cannot distinguish between the device's own displacement and the actual displacement of the slope, thereby reducing the reliability of the monitoring results.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a rock and soil slope displacement detection device based on dual-axis differential transmission, comprising a detection device main body, a detection shaft assembly is provided on one side of the detection device main body, and a reference shaft assembly is provided on the other side of the detection device main body, the detection shaft assembly and the reference shaft assembly are both composed of a transmission rack, a fixed rod and a movable rod, the movable rod on the detection shaft assembly directly contacts the slope rock and soil body, the movable rod on the reference shaft assembly is set at a stable bedrock position, two groups of differential conversion mechanisms are provided inside the detection device main body, the differential conversion mechanism includes a driving gear connected to the detection device main body through a bearing, and the movable rods on the detection shaft assembly and the reference shaft assembly are respectively meshed with corresponding driving gears, the other end of the driving gear is provided with a high-precision absolute encoder fixed to the detection device main body, and the detection end of the high-precision absolute encoder is keyed to the driving shaft on the driving gear.

[0007] Preferably, a single-chip microcomputer is installed on one side of the inside of the detection device body, and the signal output end of the high-precision absolute encoder is electrically connected to the input end of the single-chip microcomputer. The single-chip microcomputer has a built-in difference calculation model, and the actual slope displacement is obtained through the difference calculation model. A wireless communication module is installed on one side of the single-chip microcomputer, and the data is uploaded to the cloud platform through the wireless network.

[0008] Preferably, the transmission rack and the detection device body are slidingly limited, and both ends of the transmission rack pass through the detection device body, and the transmission rack is welded and fixed to the fixing rod.

[0009] Preferably, the interior of the fixed rod has a cavity, one end of the movable rod is located in the cavity of the fixed rod, and the movable rod and the fixed rod are slidably limited, the upper end surface of the fixed rod is rotatably mounted with a first adjusting wheel, the lower end shaft of the first adjusting wheel is located at one end inside the fixed rod and is fixed with a first driving bevel gear, one side of the first driving bevel gear is meshed with a first driven bevel gear, one end of the first driven bevel gear is fixed with a stud, the stud extends to the interior of the movable rod, and the external thread of the stud is adapted to the internal screw hole of the movable rod.

[0010] Preferably, the outer ends of the movable rods are integrally formed with positioning blocks, the interior of the positioning blocks is provided with mounting holes, and the interior of the mounting holes is provided with anchor rods.

[0011] Preferably, the outer wall of the anchor rod is provided with a plurality of reinforcement mechanisms, and the reinforcement mechanisms include limiting slide grooves, and the interior of the limiting slide grooves is slidingly limited with reinforcement nails, the interior of the anchor rod is provided with a transmission cavity, and a transmission shaft is rotatably installed inside the transmission cavity, and the outside of the transmission shaft is provided with a plurality of equally distributed second driving bevel gears, and second driven bevel gears are meshed and installed on both sides of the second driving bevel gear, and a screw is fixed on the shaft of the second driven bevel gear, and the screw extends into the inner screw hole of the reinforcement nail, and the screw is threadedly matched with the reinforcement nail.

[0012] Preferably, a second adjusting wheel is rotatably mounted on the top of the anchor rod, and the bottom of the second adjusting wheel is key-connected to the upper end of the transmission shaft, and an upper end surface of the second adjusting wheel is provided with a concave octagonal hole.

[0013] Preferably, a solar panel is fixed on the top of the detection device body via a mounting frame, and a lithium battery assembly is installed on the other side of the detection device body.

[0014] Preferably, the bottom of the detection device body is installed in the same area as the reference axis assembly.

[0015] Preferably, the transmission ratio of the differential conversion mechanism is 1:1.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention is based on a dual-axis differential transmission device for detecting rock and soil displacement, and is provided with a detection axis and a reference axis. The two axes work together to achieve precise detection. The detection axis directly contacts the rock and soil of the slope. When the rock and soil displaces, the detection axis also generates a corresponding linear displacement, and its displacement directly reflects the deformation of the rock and soil of the slope. The reference axis is buried in a stable bedrock or an area without deformation, and serves as a reference benchmark. Under normal circumstances, its displacement is extremely small or basically remains unchanged. The linear displacement of the dual axes is converted into an angle difference, and the displacement difference between the main axis and the secondary axis is calculated. This difference is the actual displacement of the rock and soil slope. Through the dual-axis difference calculation, common mode interference such as environmental vibration and temperature change can be effectively eliminated. The reference axis serves as a stable reference benchmark, which can distinguish between the displacement of the device itself and the actual displacement of the slope. Even in a complex environment, it can ensure that the monitoring results truly reflect the deformation of the slope, thereby greatly improving the reliability of the monitoring data.

[0018] 2. The present invention is provided with a flexible adjustment structure of the detection axis and the reference axis. In order to adapt to different rock and soil environments, the user drills anchor holes in the slope rock and soil and the stable bedrock respectively, and then positions the detection device body at the stable bedrock position. The user adjusts the movable rods on the detection axis assembly and the reference axis assembly according to the distance between the detection device body and the two anchor holes. By rotating the first adjusting wheel, the shaft at the lower end drives the first active bevel gear to rotate, and drives the stud to rotate under the engagement with the first driven bevel gear. The external thread of the stud rubs against the internal screw hole of the movable rod, and cooperates with the guiding effect of the inner cavity of the fixed rod on the movable rod, so that the movable rod can be flexibly moved to the anchor hole position for installation and positioning by the staff.

[0019] 3. The present invention is provided with an anchor rod reinforcement mechanism. After the movable rods on the detection axis assembly and the reference axis assembly are moved to the anchor rod position, the anchor rod is inserted into the anchor hole through the through hole of the positioning block. Then, the second adjusting wheel at the top of the anchor rod is rotated to drive the transmission shaft to rotate, thereby driving the screw equipped with the second driven helical gear to rotate under the meshing action of the second active bevel gear outside the transmission shaft. Similarly, the extension of the reinforcement nails inside the limiting slide groove is achieved, and the rock and soil are drilled into the horizontal direction, so that the detection axis assembly and the reference axis assembly are tightly connected to the rock and soil, which greatly improves the stability of the device in complex geological conditions and harsh environments, avoids loosening and displacement of the device due to external forces, and ensures the continuity and accuracy of the detection data. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A perspective view of the present invention;

[0021] Figure 2 It is another perspective perspective diagram of the present invention;

[0022] Figure 3 It is a schematic diagram of the transmission structure of the fixed rod and the movable rod of the present invention;

[0023] Figure 4 Schematic diagram of the internal structure of the anchor rod of the present invention;

[0024] Figure 5 It is a front view of the internal structure of the detection device body of the present invention.

[0025] In the figure: 1. Detection device body; 2. Detection axis assembly; 3. Reference axis assembly; 4. Transmission rack; 5. Fixed rod; 6. Movable rod; 7. First adjusting wheel; 8. Positioning block; 9. Anchor rod; 10. Reinforcement mechanism; 11. Second adjusting wheel; 12. Solar panel; 13. Drive gear; 14. Drive shaft; 15. High-precision absolute encoder; 16. Stud; 17. First driving bevel gear; 18. First driven bevel gear; 19. Transmission cavity; 20. Transmission shaft; 21. Second driving bevel gear; 22. Second driven bevel gear; 23. Limiting slide; 24. Reinforcement nail; 25. Screw; 26. Lithium battery assembly; 27. Single-chip microcomputer; 28. Wireless communication module. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] See also Figure 1-5 , the present invention provides an embodiment: a rock and soil slope displacement detection device based on dual-axis differential transmission, including a detection device body 1, a detection shaft assembly 2 is provided on one side of the detection device body 1, and a reference shaft assembly 3 is provided on the other side of the detection device body 1, the detection shaft assembly 2 and the reference shaft assembly 3 are both composed of a transmission rack 4, a fixed rod 5 and a movable rod 6, the movable rod 6 on the detection shaft assembly 2 directly contacts the slope rock and soil, and the movable rod 6 on the reference shaft assembly 3 is set at a stable bedrock position, the bottom of the detection device body 1 is installed in the same area as the reference shaft assembly 3, two sets of differential conversion mechanisms are provided inside the detection device body 1, the differential conversion mechanism includes a driving gear 13 connected to the detection device body 1 through a bearing, and the movable rods 6 on the detection shaft assembly 2 and the reference shaft assembly 3 are respectively meshed and connected with the corresponding driving gear 13, the other end of the driving gear 13 is provided with a high-precision absolute encoder 15 fixed to the detection device body 1, and the detection end of the high-precision absolute encoder 15 is key-connected to the driving shaft 14 on the driving gear 13, and the transmission ratio of the differential conversion mechanism is 1:1;

[0028] When the rock mass shifts, the detection axis produces a corresponding linear displacement, directly reflecting the deformation of the slope's rock mass. The reference axis serves as a reference datum, and under normal circumstances, its displacement is minimal or essentially constant. The linear displacement of the two axes is converted into an angular difference. A high-precision absolute encoder, mounted on the output shaft of the drive gear, captures this angular difference in real time and converts it into a digital signal. A data processing unit, after acquiring the encoder signal, calculates the displacement difference between the primary and secondary axes. This difference represents the actual displacement of the slope. Extensive testing has demonstrated the device's high reliability and stability under diverse geological conditions and environmental factors. In soil slope testing, the device consistently and accurately monitored increasing displacement, with the measured data closely matching the actual displacement within a minimal error range. In rock slopes, despite the relatively slow and small displacement changes caused by the hard rock, the device's high sensitivity allows it to accurately detect subtle signs of displacement, providing critical data for slope stability assessment. During testing at 40°C, the device's internal electronic and mechanical components remained unaffected, with all performance indicators remaining stable and data collection and transmission functioning normally, fully demonstrating its excellent high-temperature resistance. Even in a 90% humidity environment, the device demonstrated excellent moisture resistance, with no short circuits or other faults in its internal circuitry. It continued to output accurate monitoring data, demonstrating its strong environmental adaptability.

[0029] The following is the performance parameter table:

[0030]

[0031]

[0032] See also Figure 5 A single-chip microcomputer 27 is installed on one side of the detection device body 1, and the signal output end of the high-precision absolute encoder 15 is electrically connected to the input end of the single-chip microcomputer 27. The single-chip microcomputer 27 has a built-in difference calculation model, and the actual slope displacement is obtained by the difference calculation model. A wireless communication module 28 is installed on one side of the single-chip microcomputer 27 to upload data to the cloud platform via a wireless network;

[0033] In the difference calculation model, the displacement of the detection axis component 2 is assumed to be S1, and the displacement of the reference axis component 3 is assumed to be S2. The actual slope displacement is ΔS = S1 - S2. ΔS is the actual slope displacement after eliminating environmental interference. This step effectively eliminates the influence of common-mode interference such as environmental vibration and temperature change on the detection results through the dual-axis difference method.

[0034] In actual detection, the displacement of the detection axis component 2 and the reference axis component 3 is converted into an angle difference θ through a differential conversion mechanism. In this case, the formula is used: Where L is the circumference of the drive gear 13, and i is the gear ratio. This formula combines the angle signal collected by the high-precision absolute encoder 15 with the transmission mechanism parameters to reversely calculate the corresponding actual displacement. While reducing the dependence on high-resolution sensors, it ensures high-precision detection. Through the combination of these two formulas, the difference calculation model realizes the precise conversion from actual displacement to electrical signal, and then restores the actual displacement from the electrical signal, providing theoretical support and calculation basis for high-precision monitoring of geotechnical slope displacement.

[0035] See also Figure 1 and Figure 3 , the transmission rack 4 and the detection device body 1 are limited in sliding, and both ends of the transmission rack 4 pass through the detection device body 1, the transmission rack 4 is welded and fixed to the fixed rod 5, and there is a cavity inside the fixed rod 5. One end of the movable rod 6 is located in the cavity of the fixed rod 5, and the movable rod 6 and the fixed rod 5 are limited in sliding. The upper end surface of the fixed rod 5 is rotatably mounted with a first adjusting wheel 7, and the lower end shaft of the first adjusting wheel 7 is located at one end inside the fixed rod 5 and is fixed with a first driving bevel gear 17. One side of the first driving bevel gear 17 is meshed with a first driven bevel gear 18, and one end of the first driven bevel gear 18 is fixed with a stud 16, which extends to the inside of the movable rod 6, and the external thread of the stud 16 is adapted to the internal screw hole of the movable rod 6;

[0036] The user rotates the first adjustment wheel 7, driving the first active bevel gear 17 to rotate, which in turn rotates the stud 16 through engagement with the first driven bevel gear 18. Because the external thread of the stud 16 matches the internal threaded hole of the movable rod 6, and the inner cavity of the fixed rod 5 guides the movable rod 6, under the threaded transmission, the movable rod 6 flexibly moves along the cavity of the fixed rod 5. The movable rod 6 of the detection shaft assembly 2 can be moved to a position that contacts the slope rock and soil, and the movable rod 6 of the reference shaft assembly 3 can be moved to the anchor hole position on the stable bedrock, achieving installation positioning and greatly improving the environmental adaptability of the device. The user can complete the adjustment by rotating the first adjustment wheel 7 without complex operations, simplifying the installation process, saving installation time and labor costs, while ensuring the precise positioning of the movable rod 6, laying the foundation for subsequent stable and accurate displacement detection.

[0037] See also Figure 2 、 Figure 3 and Figure 4, the outer ends of the movable rods 6 are integrally formed with positioning blocks 8, the interior of the positioning blocks 8 is provided with mounting holes, the interior of the mounting holes is provided with anchor rods 9, the outer walls of the anchor rods 9 are provided with multiple reinforcement mechanisms 10, the reinforcement mechanisms 10 include limiting slide grooves 23, the interior of the limiting slide grooves 23 are slidably limited with reinforcement nails 24, the interior of the anchor rods 9 is provided with a transmission cavity 19, the interior of the transmission cavity 19 is rotatably installed with a transmission shaft 20, the outside of the transmission shaft 20 is provided with multiple equally distributed second driving bevel gears 21, both sides of the second driving bevel gear 21 are meshed with second driven bevel gears 22, a screw 25 is fixed on the axis of the second driven bevel gear 22, the screw 25 extends into the inner screw hole of the reinforcement nail 24, and the screw 25 is threadedly matched with the reinforcement nail 24;

[0038] After inserting the anchor rod 9 into the anchor hole through the through hole of the positioning block 8, the second adjusting wheel 11 at the top of the anchor rod 9 is rotated, driving the transmission shaft 20 to rotate. The second active bevel gear 21 on the outside of the transmission shaft 20 rotates accordingly, and the screw rod 25 rotates by meshing with the second driven bevel gear 22. The screw rod 25 is threadedly engaged with the reinforcement nail 24. During the rotation process, the reinforcement nail 24 is pushed along the limiting slide 23 to drill into the rock and soil from the horizontal direction, thereby achieving a stable connection between the anchor rod 9 and the rock and soil, and then fixing the movable rod 6. The anchor rod reinforcement mechanism forms a three-dimensional fixed structure by inserting the anchor rod into the anchor hole and the reinforcement nail drilling horizontally into the rock and soil, significantly enhancing the stability of the device in complex geological conditions and harsh environments, avoiding loosening and displacement of the device due to external forces, and ensuring the continuity and accuracy of the detection data.

[0039] See also Figure 3 A second adjusting wheel 11 is rotatably mounted on the top of the anchor rod 9. Its bottom is keyed to the upper end of the transmission shaft 20. A concave octagonal hole is defined on the upper end of the second adjusting wheel 11. The design of the second adjusting wheel 11 facilitates operation using common tools, reducing operational difficulty and improving installation efficiency. Its simple and reliable structure ensures ease and stability of reinforcement operations, further enhancing the convenience and practicality of the device during installation.

[0040] See also Figure 1 and Figure 5A solar panel 12 is fixed on the top of the detection device body 1 through a mounting frame, and a lithium battery assembly 26 is installed on the other side of the detection device body 1. The solar panel 12 converts solar energy into electrical energy under light conditions to charge the lithium battery assembly 26. The lithium battery assembly 26 stores electrical energy to power components such as the single-chip microcomputer 27, the high-precision absolute encoder 15, and the wireless communication module 28 in the detection device body 1 to maintain normal operation of the device. When there is insufficient light, the lithium battery assembly 26 provides continuous power to ensure uninterrupted operation of the device. The design of combining solar power supply with lithium battery assembly enables the device to operate stably for a long time in remote mountainous areas and slope areas without power supply without an external power supply, meeting the power supply needs of the device in diverse environments.

[0041] The following figure is the test data table:

[0042]

[0043]

[0044] Working principle: First, anchor holes are drilled in the slope rock and stable bedrock respectively, and the bottom of the detection device body 1 is installed in the same stable bedrock area as the reference axis assembly; then, by rotating the first adjusting wheel 7 on the upper end face of the fixed rod 5, the second active bevel gear 21 and the second driven bevel gear 22 are engaged to drive the stud 16 to rotate, so that the movable rod 6 on the detection axis assembly 2 and the reference axis assembly 3 moves along the cavity of the fixed rod 5 to the corresponding anchor hole position; then, the anchor rod 9 is inserted into the anchor hole through the through hole of the positioning block 8 at the outer end of the movable rod 6, and the second adjusting wheel 11 at the top of the anchor rod 9 is rotated, and the second active bevel gear 21 and the second driven bevel gear 22 are engaged to drive the stud 16 to rotate. The transmission of the second driven bevel gear 22 causes the screw 25 to rotate and push the reinforcement nail 24 to drill into the rock and soil from the horizontal direction, completing a stable connection between the anchor rod 9 and the rock and soil; after the device is installed, when the slope rock and soil body is displaced, the movable rod 6 on the detection shaft assembly 2 drives the transmission rack 4 to rotate the drive gear 13, forming a rotation difference with the reference shaft assembly 3 on the stable bedrock. The high-precision absolute encoder 15 converts this difference into an angle difference signal and transmits it to the microcontroller 27. The microcontroller 27 uses the built-in difference calculation model to calculate the actual slope displacement through the two formulas of the difference calculation model, and uploads the data to the cloud platform through the wireless communication module 28.

[0045] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A rock slope displacement detection device based on dual-axis differential transmission, comprising a detection device body (1), characterized in that: A detection shaft assembly (2) is provided on one side of the detection device body (1), and a reference shaft assembly (3) is provided on the other side of the detection device body (1). Both the detection shaft assembly (2) and the reference shaft assembly (3) are composed of a transmission rack (4), a fixed rod (5) and a movable rod (6). The movable rod (6) on the detection shaft assembly (2) directly contacts the slope rock and soil, and the movable rod (6) on the reference shaft assembly (3) is set at a stable bedrock position. Two sets of differential conversion mechanisms are provided inside the detection device body (1). The differential conversion mechanism includes a driving gear (13) connected to the detection device body (1) through a bearing, and the movable rods (6) on the detection shaft assembly (2) and the reference shaft assembly (3) are respectively engaged with the corresponding driving gear (13). The other end of the driving gear (13) is provided with a high-precision absolute encoder (15) fixed to the detection device body (1), and the detection end of the high-precision absolute encoder (15) is key-connected to the driving shaft (14) on the driving gear (13).

2. The rock slope displacement detection device based on dual-axis differential transmission according to claim 1 is characterized in that: A single-chip microcomputer (27) is installed on one side of the detection device body (1), and the signal output end of the high-precision absolute encoder (15) is electrically connected to the input end of the single-chip microcomputer (27). The single-chip microcomputer (27) has a built-in difference calculation model, and the actual slope displacement is obtained through the difference calculation model. A wireless communication module (28) is installed on one side of the single-chip microcomputer (27), and data is uploaded to a cloud platform through a wireless network.

3. The rock slope displacement detection device based on dual-axis differential transmission according to claim 1 is characterized in that: The transmission rack (4) and the detection device body (1) are slidably limited, and both ends of the transmission rack (4) pass through the detection device body (1), and the transmission rack (4) is fixed to the fixing rod (5) by welding.

4. The rock slope displacement detection device based on dual-axis differential transmission according to claim 3 is characterized in that: The interior of the fixed rod (5) is provided with a cavity, one end of the movable rod (6) is located in the cavity of the fixed rod (5), and the movable rod (6) and the fixed rod (5) are slidably limited. A first adjusting wheel (7) is rotatably mounted on the upper end surface of the fixed rod (5), and a first driving helical gear (17) is fixedly provided on one end of the lower end shaft of the first adjusting wheel (7) located inside the fixed rod (5). A first driven helical gear (18) is meshedly connected to one side of the first driving helical gear (17), and a stud (16) is fixedly provided on one end of the first driven helical gear (18). The stud (16) extends into the interior of the movable rod (6), and the external thread of the stud (16) is adapted to the internal threaded hole of the movable rod (6).

5. The rock slope displacement detection device based on dual-axis differential transmission according to claim 1 is characterized in that: The outer ends of the movable rods (6) are integrally formed with positioning blocks (8), the interior of the positioning blocks (8) is provided with mounting holes, and the interior of the mounting holes is provided with anchor rods (9).

6. The rock slope displacement detection device based on dual-axis differential transmission according to claim 5 is characterized in that: The outer wall of the anchor rod (9) is provided with a plurality of reinforcing mechanisms (10), and the reinforcing mechanisms (10) include a limiting sliding groove (23), and the interior of the limiting sliding groove (23) is slidably limited with a reinforcing nail (24). The interior of the anchor rod (9) is provided with a transmission cavity (19), and the interior of the transmission cavity (19) is rotatably installed with a transmission shaft (20), and the exterior of the transmission shaft (20) is provided with a plurality of second active helical gears (21) distributed at equal intervals, and both sides of the second active helical gear (21) are meshed with second driven helical gears (22), and a screw rod (25) is fixed on the shaft of the second driven helical gear (22), and the screw rod (25) extends into the inner screw hole of the reinforcing nail (24), and the screw rod (25) is threadedly matched with the reinforcing nail (24).

7. The rock slope displacement detection device based on dual-axis differential transmission according to claim 6 is characterized in that: A second adjusting wheel (11) is rotatably mounted on the top of the anchor rod (9), and the bottom of the second adjusting wheel (11) is key-connected to the upper end of the transmission shaft (20). The upper end surface of the second adjusting wheel (11) is provided with an inwardly concave octagonal hole.

8. The rock slope displacement detection device based on dual-axis differential transmission according to claim 1 is characterized in that: A solar panel (12) is fixed above the detection device body (1) via a mounting frame, and a lithium battery assembly (26) is installed on the other side of the detection device body (1).

9. The rock slope displacement detection device based on dual-axis differential transmission according to claim 1, characterized in that: The bottom of the detection device body (1) is installed in the same area as the reference shaft assembly (3).

10. The rock slope displacement detection device based on dual-axis differential transmission according to claim 1, characterized in that: The transmission ratio of the differential conversion mechanism is 1:1.

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