A Crack Monitoring Device and Method for Road Slopes

Abstract

This invention relates to the field of crack monitoring technology for road slopes, specifically a crack monitoring device and method for road slopes. The crack monitoring device includes: a crack gauge, a support plate, and an anchor rod. The support plate has two sets of support members connected to an adjusting component on the support plate. The adjusting component can drive the two sets of support members to move away from or closer to each other. The support members have a fixing mechanism, which includes a triggering component and a positioning component. The triggering component includes a trigger element and a telescopic element, which are connected to the support members. The positioning component includes an instantaneous structure fixedly connected to the support members. The instantaneous structure is connected to the trigger element through a displacement component. During the process of the telescopic element retracting into the support member while the support plate is pressed down, the elastic structure on the telescopic element cooperates with the trigger element, driving the displacement component to slide rapidly relative to the trigger element, thereby triggering the instantaneous structure and pushing the positioning rod on the support member to descend rapidly.

Description

Technical Field

[0001] This invention relates to the field of crack monitoring technology for road slopes, specifically a crack monitoring device and method for road slopes. Background Technology

[0002] Roadside slopes are generally slopes with a certain gradient created on both sides of the roadbed to ensure its stability. They typically include soil slopes and rock slopes. After a road is put into use, external forces can cause cracks to appear on the roadside slopes. To detect the deterioration of these cracks early, fiber optic crack gauges are currently used to monitor them. During installation, the fiber optic crack gauge is anchored above the crack and spans both sides of it. The gauge's rod must be angled at 90° to the direction of the crack to ensure accurate monitoring.

[0003] To ensure that the fiber optic crack gauge's pole forms a 90° angle with the crack along the roadside slope it traverses, a straight line is first stretched across both ends of the crack before installation. Then, an auxiliary line is stretched at the crack where the fiber optic crack gauge will be installed, intersecting the straight line at both ends of the crack at a 90° angle. During installation, the fiber optic crack gauge's pole is positioned along the auxiliary line, and anchor bolts are used to secure both ends of the gauge to the sides of the crack.

[0004] The installation process described above is complex, requiring the coordination of two auxiliary lines to further determine the installation direction of the fiber optic crack gauge. However, in actual operation, the two auxiliary lines are easily affected by wind in the environment, causing them to deform and bend. This makes right-angle measurements difficult, resulting in a time-consuming and labor-intensive installation of the fiber optic crack gauge. Installation deviations can also occur, reducing the standardization of the installation and affecting the accuracy of the crack gauge monitoring data. Summary of the Invention

[0005] The purpose of this invention is to provide a device and method for monitoring cracks in road slopes, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A crack monitoring device for roadside slopes includes: a crack gauge, a support plate, and an anchor bolt;

[0008] The pallet is slidably provided with a support member, and two sets of the support members are symmetrically arranged along the length of the pallet. The two sets of the support members are connected to an adjusting member rotatably mounted on the pallet. The adjusting member can drive the two sets of support members to move away from or closer to each other.

[0009] The support member is provided with a fixing mechanism, which includes a triggering component and a positioning component. The triggering component includes a triggering element and a telescopic element. The telescopic element is slidably connected to the support member, and the triggering element is fixedly connected to the support member.

[0010] The positioning component includes an instantaneous structure fixedly connected to the support member. The instantaneous structure is connected to the trigger member through a displacement component. When the tray is pressed down, the telescopic member retracts into the support member. During the retraction process, the elastic structure provided on the telescopic member cooperates with the trigger member to drive the displacement component to slide rapidly relative to the trigger member, thereby triggering the instantaneous structure and pushing the positioning rod slidably provided on the support member to descend rapidly.

[0011] The road slope crack monitoring device described above: the adjusting component includes a bidirectional screw rod rotatably mounted on the support plate, and two sets of bidirectional screw rods are symmetrically arranged along the width direction of the support plate, and the two sets of bidirectional screw rods are connected by a belt.

[0012] The road slope crack monitoring device described above: the support includes a mounting plate that is slidably arranged along the length direction of the support plate, two sets of threaded sleeves are fixedly arranged on one side of the mounting plate along its length direction, the two sets of threaded sleeves are respectively threadedly connected to two sets of bidirectional screws, and two sets of fixing legs are symmetrically fixedly arranged on the other side of the mounting plate along its length direction.

[0013] The road slope crack monitoring device described above: the telescopic component includes two sets of telescopic legs, the two sets of telescopic legs are slidably disposed in the two sets of fixed legs respectively, and the two sets of telescopic legs are fixedly connected by a connecting plate.

[0014] The road slope crack monitoring device described above: the triggering element includes a guide fixedly mounted on the fixed leg, the guide having a positioning groove and a triggering groove, the triggering groove and the positioning groove being connected by an inclined guide surface.

[0015] The roadside slope crack monitoring device described above: the elastic structure includes a fixed sleeve fixedly mounted on the telescopic leg, a first spring slidably mounted inside the fixed sleeve, one end of the first spring abutting against the bottom of the fixed sleeve, and the other end abutting against a plug rod slidably mounted inside the fixed sleeve, and a pulley is rotatably mounted on the end of the plug rod away from the first spring.

[0016] The roadside slope crack monitoring device described above includes: the instantaneous structure comprising a plug-in cylinder slidably disposed on the support plate, the plug-in cylinder being fixedly connected to the fixed leg, and a sliding rod being fixedly disposed on the plug-in cylinder, with a lifting plate slidably disposed on the sliding rod; it also includes a second spring slidably disposed inside the plug-in cylinder, one end of the second spring being fixedly connected to the bottom of the plug-in cylinder, and the other end abutting against the lifting plate.

[0017] The road slope crack monitoring device described above: the displacement component includes a trigger plate slidably disposed within the guide member, a moving rod fixedly disposed on the trigger plate, an abutment plate fixedly disposed at one end of the moving rod away from the trigger plate, and the moving rod is slidably connected to a collar fixedly disposed on the fixed leg. A third spring is also disposed on the moving rod, one end of the third spring abutting against the collar and the other end abutting against the abutment plate.

[0018] A method for monitoring cracks in road slopes is also proposed, employing the road slope crack monitoring device described above, and including the following steps:

[0019] Step 1: Place the support plate vertically on the top of the crack, and then rotate the double-acting screw according to the width of the crack to make the two sets of connecting plates at a suitable distance.

[0020] Step 2: Press down on the support plate, and the telescopic leg retracts into the fixed leg. During this process, the guide and the elastic structure work together to enable the telescopic leg to retract automatically and quickly, thereby triggering the displacement component.

[0021] Step 3: The triggered displacement component makes way for the instantaneous structure, so that the second spring can quickly release its elastic potential energy and drive the positioning rod, which is slidably set on the fixed leg, into the slope to achieve the positioning of the pallet.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] By setting up support components and adjusting components, and using the drive of a two-way screw, the spacing between the two sets of support components can be adjusted, thereby quickly adapting to cracks of different widths and facilitating the installation of support components on the subsequent support plate on both sides of the crack.

[0024] At the same time, by using the alignment line set on the support plate as an auxiliary line, it can be ensured that the support plate is perpendicular to the crack. Furthermore, through the contact between the connecting plate and the slope, it can be forcibly ensured that the support plate is parallel to the slope, so that the distance between the crack gauge and the slope is consistent, thereby reducing the deviation of the monitoring data.

[0025] By setting up a fixing mechanism, with the cooperation between the triggering component and the positioning component, when the position of the support plate is confirmed and the support plate is pressed down, the reaction force of the slope on the connecting plate can drive the telescopic component to retract. During the retraction process, the elastic structure on the telescopic component cooperates with the triggering component on the support component to drive the elastic displacement component set between the support component and the triggering component to quickly move aside, releasing the blockage on the instantaneous structure. Then, the instantaneous structure quickly drives the positioning rod set on the support component to be driven vertically into the slope, realizing the rapid connection between the support plate and the slope. With the help of the support plate, the standardization of the crack gauge installation can be improved, the error of subsequent monitoring can be reduced, and the overall operation process is relatively simple. The subsequent secondary fixing with anchor rods can improve the stability and firmness of the crack gauge after installation. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a crack monitoring device for roadside slopes.

[0027] Figure 2 This is a schematic diagram of the structure of the support and adjustment components in a roadside slope crack monitoring device.

[0028] Figure 3 This is a schematic diagram of the support plate in a roadside slope crack monitoring device.

[0029] Figure 4 This is a schematic diagram of the fixing mechanism on the support plate in a road slope crack monitoring device.

[0030] Figure 5 This is a schematic diagram of the structure of the elastic structure and the triggering element in the crack monitoring device for road slopes.

[0031] Figure 6 This is a schematic diagram of the structure of the support and expansion joints in the crack monitoring device for road slopes.

[0032] Figure 7 This is a schematic diagram of the elastic structure in a crack monitoring device for road slopes.

[0033] Figure 8 This is a schematic diagram of the trigger element in a crack monitoring device for roadside slopes.

[0034] Figure 9 This is a schematic diagram of the structure of the instantaneous structure, displacement component, trigger element, and support plate in the crack monitoring device for road slopes.

[0035] Figure 10 This is a schematic diagram of the structure of the instantaneous structure, displacement component, and triggering element in the crack monitoring device for road slopes.

[0036] Figure 11 This is a schematic diagram of the structure on the fixed leg of a crack monitoring device for road slopes.

[0037] In the diagram: 1. Crack gauge; 101. Anchor bolt; 2. Support plate; 201. Bracket; 202. Alignment line; 203. Snap-fit ​​groove; 3. Two-way lead screw; 4. Fixed leg; 5. Threaded sleeve; 501. Mounting plate; 6. Insert sleeve; 7. Telescopic leg; 701. Connecting plate; 8. Guide component; 801. Positioning groove; 802. Inclined guide surface; 803. Trigger groove; 804. Snap-fit ​​block; 9. Fixed sleeve; 10. Insert rod; 11. Slide rod; 12. Sleeve ring; 13. Moving rod; 14. Abutment plate; 15. First spring; 16. Pulley; 17. Sleeve ring; 18. Lifting plate; 19. Second spring; 20. Trigger plate; 21. Third spring; 22. Positioning rod. Detailed Implementation

[0038] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0039] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0040] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented even without certain specific details. In some instances, methods, means, and elements well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0041] Please see Figures 1-11 In this embodiment of the invention, a crack monitoring device for road slope includes: a crack gauge 1, a support plate 2, and an anchor bolt 101.

[0042] Preferably, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 The aforementioned support plate 2 is symmetrically fixed with two sets of brackets 201 along its length direction. The brackets 201 are elastic retaining rings. The brackets 201 can lock the crack gauge 1. By setting the retaining ring, a detachable connection between the crack gauge 1 and the support plate 2 can be realized.

[0043] Furthermore, the support plate 2 is also provided with an alignment line 202. The alignment line 202 is set along the width direction of the support plate 2 and is the axis of symmetry in the length direction of the support plate 2. In actual installation of the support plate 2, the alignment line 202 is made to coincide with the line connecting the beginning and end of the crack, so that the support plate 2 is perpendicular to the crack, thereby facilitating the installation of the crack gauge 1 and improving the installation standard of the crack gauge 1. After the position of the support plate 2 is fixed, the two ends of the crack gauge 1 are fixed to the slope surface by the anchor rod 101, which can further improve the stability of the crack gauge 1 when monitoring cracks.

[0044] The pallet 2 is slidably provided with a support member. Two sets of the support members are symmetrically arranged along the length of the pallet 2. The two sets of the support members are connected to an adjusting member that is rotatably mounted on the pallet 2. The adjusting member can drive the two sets of the support members to move away from or closer to each other.

[0045] The adjusting component includes a bidirectional lead screw 3 rotatably mounted on the support plate 2. Two sets of bidirectional lead screws 3 are symmetrically arranged along the width direction of the support plate 2, and the two sets of bidirectional lead screws 3 are connected by a belt.

[0046] The support includes a mounting plate 501 that is slidably disposed along the length of the support plate 2. Two sets of threaded sleeves 5 are fixedly disposed on one side of the mounting plate 501 along its length. The two sets of threaded sleeves 5 are respectively threadedly connected to two sets of bidirectional lead screws 3. Under the cooperation between the mounting plate 501 and the support plate 2, the threaded sleeves 5 can only reciprocate along the axial direction of the bidirectional lead screws 3. Two sets of fixing legs 4 are symmetrically fixedly disposed on the other side of the mounting plate 501 along its length.

[0047] Specifically, please refer to Figure 1 , Figure 2 One of the two sets of bidirectional lead screws 3 is coaxially fixed with a knob. Before testing the crack gauge 1, the support plate 2 is placed on the upper side of the crack. Then, the knob is rotated according to the width of the crack. Immediately, the two sets of bidirectional lead screws 3 move synchronously, which can drive the threaded sleeve 5 to move the two sets of mounting plates 501 and the fixing mechanism on the mounting plates 501 closer or further apart until the distance between the two sets of mounting plates 501 is adapted to the width of the crack. Then, the knob is stopped. Afterward, pressing down on the support plate 2 will trigger the fixing mechanism, thereby fixing the support plate 2 above the crack so that the crack gauge 1 installed on the support plate 2 can monitor the crack in real time.

[0048] Specifically, please refer to Figure 1 , Figure 2 , Figure 4 , Figures 5-11The fixing mechanism includes a triggering component and a positioning component. The triggering component includes a triggering element and a telescopic element. The telescopic element is slidably connected to the support element, and the triggering element is fixedly connected to the support element.

[0049] The telescopic component includes two sets of telescopic legs 7, which are slidably disposed in two sets of fixed legs 4, and are fixedly connected to each other by a connecting plate 701.

[0050] In particular, please see Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 7 The connecting plate 701 is parallel to the support plate 2. When positioning the support plate 2, the connecting plate 701 will contact the slope surface of the roadside slope. With the contact and cooperation between the connecting plate 701 and the slope surface, it can be ensured that the support plate 2 and the slope surface remain parallel, so that the distance between the crack gauge 1 and the slope surface remains consistent during the subsequent installation process, thereby improving the accuracy of the monitoring data of the crack gauge 1.

[0051] Further, please refer to Figure 1 , Figure 2 , Figures 4-11 The positioning component includes an instantaneous structure fixedly connected to the support member. The instantaneous structure is connected to the trigger member through a displacement component. When the tray 2 is pressed down, the telescopic member retracts into the support member. During the retraction process, the elastic structure provided on the telescopic member cooperates with the trigger member to drive the displacement component to slide rapidly relative to the trigger member, thereby triggering the instantaneous structure and pushing the positioning rod 22, which is slidably provided on the support member, to descend rapidly.

[0052] Preferably, a sleeve ring 12 is fixedly provided on the fixed leg 4, and the positioning rod 22 is placed inside the sleeve ring 12. In the initial state, under the influence of its own gravity, the upper end of the positioning rod 22 is far away from the support plate 2. During the subsequent pressing process, as the support plate 2 and the fixed leg 4 descend, the end of the positioning rod 22 contacts the slope. Then, under the support of the slope, the positioning rod 22 slides relative to the sleeve ring 12 and the fixed leg 4, and can contact the instantaneous structure. When the instantaneous structure is triggered, the instantaneous structure can force the positioning rod 22 to descend rapidly relative to the fixed leg 4 and hit into the slope, thereby fixing the support plate 2.

[0053] The triggering element includes a guide 8 fixedly mounted on the fixed leg 4. The guide 8 has a positioning groove 801 and a trigger groove 803. The trigger groove 803 and the positioning groove 801 are connected by an inclined guide surface 802.

[0054] Specifically, please refer to Figure 8A snap-fit ​​block 804 is fixedly provided on the guide member 8. The snap-fit ​​block 804 is slidably disposed in the snap-fit ​​groove 203 opened on the tray 2. With the cooperation of the snap-fit ​​block 804 and the snap-fit ​​groove 203, the guide member 8 can slide left and right relative to the tray 2 following the fixed leg 4.

[0055] The elastic structure includes a fixed sleeve 9 fixedly mounted on the telescopic leg 7. A first spring 15 is slidably mounted inside the fixed sleeve 9. One end of the first spring 15 abuts against the bottom of the fixed sleeve 9, and the other end abuts against the insertion rod 10 slidably mounted inside the fixed sleeve 9. A pulley 16 is rotatably mounted on the end of the insertion rod 10 away from the first spring 15.

[0056] For details, please refer to Figure 7 The first spring 15 is always in a compressed state, which pushes the plug rod 10 to move outward toward the fixed sleeve 9 so that the pulley 16 fits against the guide 8.

[0057] In the initial state, please refer to Figure 4 , Figure 5 , Figure 6 , Figure 8 , Figure 9 When the pulley 16 is engaged with the positioning groove 801, the telescopic leg 7 protrudes from the fixed leg 4, and the distance between the connecting plate 701 and the support plate 2 is at its maximum.

[0058] When the pallet 2 is positioned, pressing down on the pallet 2 causes the slope to react with the connecting plate 701, forcing the telescopic leg 7 to retract into the fixed leg 4. At the same time, the fixed sleeve 9, which is fixed to the telescopic leg 7, causes the pulley 16 to separate from the positioning groove 801. As the telescopic leg 7 continues to retract, the pulley 16 slides along the inclined guide surface 802. Under the pressure of the inclined guide surface 802, the pulley 16 forces the plug rod 10 to retract into the fixed sleeve 9, further compressing the first spring 15. After the pulley 16 separates from the inclined guide surface 802, as the support plate 2 continues to press down, the pulley 16, under the action of the elastic potential energy released by the first spring 15, quickly engages with the trigger groove 803. During this process, the pulley 16, which moves rapidly toward the outside of the fixed sleeve 9, can trigger the displacement component, thereby making way for the instantaneous structure so that the instantaneous structure can quickly drive the positioning rod 22 into the slope, thereby achieving a fixed connection between the support plate 2 and the slope, so that the subsequent crack gauge 1 can monitor the crack in real time.

[0059] The instantaneous structure includes a plug-in cylinder 6 slidably disposed on the support plate 2. The plug-in cylinder 6 is fixedly connected to the fixed leg 4. The mounting plate 501 is engaged by a bidirectional lead screw 3 and a threaded sleeve 5. During the movement relative to the support plate 2, the plug-in cylinder 6 and the positioning rod 22 can move synchronously with the mounting plate 501 so that the plug-in cylinder 6 can always remain coaxial with the positioning rod 22, thereby facilitating the subsequent descent positioning action of the positioning rod 22. The plug-in cylinder 6 is also fixedly disposed on a slide rod 11, and a lifting plate 18 is slidably disposed on the slide rod 11. The structure also includes a second spring 19 disposed inside the plug-in cylinder 6. One end of the second spring 19 is fixedly connected to the bottom of the plug-in cylinder 6, and the other end abuts against the lifting plate 18.

[0060] The displacement assembly includes a trigger plate 20 slidably disposed within the guide member 8. A moving rod 13 is fixedly disposed on the trigger plate 20. An abutment plate 14 is fixedly disposed at one end of the moving rod 13 away from the trigger plate 20. The moving rod 13 is slidably connected to a collar 17 fixedly disposed on the fixed leg 4. A third spring 21 is also disposed on the moving rod 13. One end of the third spring 21 abuts against the collar 17, and the other end abuts against the abutment plate 14.

[0061] In particular, please see Figure 9 , Figure 10 , Figure 11 The third spring 21 is always in a compressed state, pushing the abutment plate 14 to tend to move toward the slide rod 11, thereby sealing the lower end of the plug tube 6. In the initial state, the second spring 19 is compressed inside the plug tube 6 and stores a large elastic potential energy.

[0062] In summary, when the support plate 2 is pressed down until the pulley 16 engages with the trigger groove 803, the pulley 16 can push the trigger plate 20 toward the interior of the trigger groove 803 (the elastic potential energy stored in the first spring 15 is greater than the elastic potential energy stored in the third spring 21). At the same time, the trigger plate 20, which retracts into the trigger groove 803, moves the abutment plate 14 away from the slide rod 11 under the connection of the moving rod 13, thereby releasing the lower part of the insertion cylinder 6. Subsequently, the second spring 19 compressed in the insertion cylinder 6 quickly releases its elastic potential energy, pushing the lifting plate 18 and the positioning rod 22 to quickly drive into the slope. At this time, the positioning rod 22 remains perpendicular to the slope so that the support plate 2 remains parallel to the slope. Then, the crack gauge 1 is fixed to the slope using the anchor rod 101, thus achieving the standardized installation between the crack gauge 1 and the slope.

[0063] A method for monitoring cracks in road slopes is also proposed, employing the road slope crack monitoring device described above, and including the following steps:

[0064] Step 1: Place the support plate 2 vertically on the upper side of the crack, and then rotate the double-acting screw 3 according to the width of the crack to make the two sets of connecting plates 701 at a suitable distance.

[0065] Step 2: Press down on the support plate 2, and the telescopic leg 7 retracts into the fixed leg 4. During this process, the guide 8 cooperates with the elastic structure to enable the telescopic leg 7 to retract automatically and quickly, thereby triggering the displacement component.

[0066] Step 3: The triggered displacement component makes way for the instantaneous structure so that the second spring 19 can quickly release its elastic potential energy and drive the positioning rod 22, which is slidably set on the fixed leg 4, into the slope to achieve the positioning of the pallet 2.

[0067] 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 implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0068] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A crack monitoring device for roadside slopes, comprising: The crack gauge (1), the support plate (2), and the anchor bolt (101) are characterized by: The support member is slidably provided on the tray (2). Two sets of the support members are symmetrically arranged along the length direction of the tray (2). The two sets of the support members are connected to the adjusting member rotatably installed on the tray (2). The adjusting member can drive the two sets of the support members to move away from or closer to each other. The support member is provided with a fixing mechanism, which includes a triggering component and a positioning component. The triggering component includes a triggering element and a telescopic element. The telescopic element is slidably connected to the support member, and the triggering element is fixedly connected to the support member. The positioning component includes an instantaneous structure fixedly connected to the support member. The instantaneous structure is connected to the trigger member through a displacement component. When the tray (2) is pressed down, the telescopic member retracts into the support member. During the retraction process, the elastic structure provided on the telescopic member cooperates with the trigger member to drive the displacement component to slide rapidly relative to the trigger member, thereby triggering the instantaneous structure and pushing the positioning rod (22) slidably provided on the support member to descend rapidly. The adjusting component includes a bidirectional lead screw (3) rotatably mounted on the support plate (2). Two sets of bidirectional lead screws (3) are symmetrically arranged along the width direction of the support plate (2), and the two sets of bidirectional lead screws (3) are connected by a belt. The supporting component includes a mounting plate (501) slidably arranged along the length direction of the support plate (2). Two sets of threaded sleeves (5) are fixedly arranged on one side of the mounting plate (501) along its length direction. The two sets of threaded sleeves (5) are threadedly connected to the two sets of bidirectional lead screws (3) respectively. Two sets of fixed legs (4) are symmetrically fixed on the other side of the mounting plate (501) along its length direction. The telescopic component includes two sets of telescopic legs (7). The two sets of telescopic legs (7) are slidably arranged in the two sets of fixed legs (4), and the two sets of telescopic legs (7) are connected by a connecting plate. (701) Fixed connection; the triggering element includes a guide (8) fixedly disposed on the fixed leg (4), the guide (8) is provided with a positioning groove (801) and a trigger groove (803), the trigger groove (803) and the positioning groove (801) are connected by an inclined guide surface (802); the instantaneous structure includes a plug tube (6) slidably disposed on the support plate (2), the plug tube (6) is fixedly connected to the fixed leg (4), and a slide rod (11) is also fixedly disposed on the plug tube (6), and a lifting plate (18) is slidably disposed on the slide rod (11); it also includes a second spring (19) slidably disposed in the plug tube (6), one end of the second spring (19) is fixedly connected to the bottom of the plug tube (6), and the other end abuts against the lifting plate (18).

2. The crack monitoring device for roadside slopes according to claim 1, characterized in that, The elastic structure includes a fixed sleeve (9) fixedly mounted on the telescopic leg (7), a first spring (15) is slidably mounted inside the fixed sleeve (9), one end of the first spring (15) abuts against the bottom of the fixed sleeve (9), and the other end abuts against the plug rod (10) slidably mounted inside the fixed sleeve (9), and a pulley (16) is rotatably mounted on the end of the plug rod (10) away from the first spring (15).

3. The crack monitoring device for road slopes according to claim 2, characterized in that, The displacement assembly includes a trigger plate (20) slidably disposed within the guide (8), a moving rod (13) fixedly disposed on the trigger plate (20), an abutment plate (14) fixedly disposed at one end of the moving rod (13) away from the trigger plate (20), and the moving rod (13) slidably connected to a collar (17) fixedly disposed on the fixed leg (4). A third spring (21) is also disposed on the moving rod (13), one end of the third spring (21) abutting against the collar (17) and the other end abutting against the abutment plate (14).

4. A method for monitoring cracks in road slopes, employing the road slope crack monitoring device described in claim 1, characterized in that, Includes the following steps: Step 1: Place the support plate (2) vertically on the upper side of the crack, and then rotate the double screw (3) according to the width of the crack to make the two sets of connecting plates (701) at a suitable distance. Step 2: Press down on the tray (2), and the telescopic leg (7) retracts into the fixed leg (4). During this process, the guide (8) cooperates with the elastic structure to enable the telescopic leg (7) to retract automatically and quickly, thereby triggering the displacement component. Step 3: The triggered displacement component makes way for the instantaneous structure so that the second spring (19) can quickly release its elastic potential energy and drive the positioning rod (22) that is slidably set on the fixed leg (4) into the slope to achieve the positioning of the pallet (2).

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