Road slope crack monitoring device and monitoring method

Abstract

The invention relates to the technical field of road side slope crack monitoring, in particular to a road side slope crack monitoring device and a road side slope crack monitoring method.The road side slope crack monitoring device comprises a crack meter, a supporting plate and an anchor rod; the supporting plate is provided with two supporting pieces, the two supporting pieces are connected with an adjusting piece on the supporting plate, and the adjusting piece can drive the two supporting pieces to be away from or close to each other. A fixing mechanism is arranged on the supporting piece and comprises a triggering assembly and a positioning assembly, the triggering assembly comprises a triggering piece and a telescopic piece, the telescopic piece is connected with the supporting piece, and the triggering piece is connected with the supporting piece; the positioning assembly comprises an instant structure fixedly connected with the supporting piece, the instant structure is connected with the triggering piece through the displacement assembly, in the process that the supporting plate telescopic piece is pressed downwards to retract into the supporting piece, an elastic structure on the telescopic piece is matched with the triggering piece, the displacement assembly can be driven to rapidly slide relative to the triggering piece, and therefore the instant structure is triggered; and the positioning rod on the supporting piece is pushed to quickly descend.

Description

Technical Field

[0001] The present invention relates to the technical field of crack monitoring of road slopes, and in particular to a crack monitoring device and a monitoring method for road slopes. Background Art

[0002] Roadside slopes are typically slopes with a certain gradient, created on both sides of the roadbed to ensure roadbed stability. These slopes typically consist of soil and rock. After a road is put into service, cracks may develop on the roadside slopes due to external forces. To detect cracks early, fiber optic crack meters are currently used to monitor these cracks. During installation, the fiber optic crack meter is anchored above the crack in the roadside slope, spanning both sides of the crack. The meter's rod must be aligned at a 90° angle to the crack's path, ensuring accurate detection.

[0003] To ensure the fiber optic crack meter's rod forms a 90° angle with the cracks along the road slope it passes through, a straight line is drawn across the crack before installation. Then, an auxiliary line is drawn across the crack where the fiber optic crack meter is to be installed, intersecting the auxiliary line with the straight lines at both ends of the crack at a 90° angle. During installation, the meter's rod is positioned along the auxiliary line, and anchor rods are used to secure the meter's ends to the crack.

[0004] The installation process is complex and requires the coordination of two auxiliary wires to determine the orientation of the crack meter. However, during the actual pulling process, the two auxiliary wires are easily affected by wind in the environment, causing them to deform and bend. This makes it difficult to measure right angles, making the installation of the fiber optic crack meter more time-consuming and labor-intensive. Deviations can also occur during installation, compromising the standardization of the installation and affecting the accuracy of the crack meter's monitoring data. Summary of the Invention

[0005] The object of the present invention is to provide a road slope crack monitoring device and monitoring method to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A crack monitoring device for a road slope, comprising: a crack meter, a support plate, and an anchor rod; A support member is slidably provided on the support plate, and two groups of the support members are symmetrically provided along the length direction of the support plate. The two groups of support members are connected to an adjustment member rotatably mounted on the support plate, and the adjustment member can drive the two groups of support members to move away from or closer to each other; The support member is provided with a fixing mechanism, the fixing mechanism includes a trigger assembly and a positioning assembly, the trigger assembly includes a trigger member and a telescopic member, the telescopic member is slidably connected to the support member, and the trigger member is fixedly connected to the support member; The positioning assembly includes a momentary structure fixedly connected to the support member, and the momentary structure is connected to the trigger member through a shift assembly. When the support plate is pressed downward, 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 shift assembly to slide rapidly relative to the trigger member, thereby triggering the momentary structure and pushing the positioning rod slidingly provided on the support member to descend rapidly.

[0007] The crack monitoring device for road slopes as described above: the adjusting member includes a bidirectional screw rod rotatably mounted on the support plate, and two groups of bidirectional screw rods are symmetrically arranged along the width direction of the support plate, and the two groups of bidirectional screw rods are connected by a belt.

[0008] The crack monitoring device for road slopes as described above: the support member includes a mounting plate slidingly arranged along the length direction of the support plate, two groups of threaded sleeves are fixedly arranged on one side of the mounting plate along its length direction, the two groups of threaded sleeves are respectively threadedly connected to the two groups of bidirectional screw rods, and two groups of fixed legs are symmetrically fixed on the other side of the mounting plate along its length direction.

[0009] The crack monitoring device for road slopes as described above: the telescopic member includes two groups of telescopic legs, the two groups of telescopic legs are respectively slidably arranged in the two groups of fixed legs, and the two groups of telescopic legs are fixedly connected by a connecting plate.

[0010] The crack monitoring device for road slopes as described above: the triggering member includes a guiding member fixedly arranged on the fixed leg, the guiding member is provided with a positioning groove and a triggering groove, and the triggering groove and the positioning groove are connected via an inclined guiding surface.

[0011] The crack monitoring device for road slopes as described above: the elastic structure includes a fixed sleeve fixedly arranged on the telescopic leg, a first spring is slidably arranged in the fixed sleeve, one end of the first spring abuts against the bottom of the fixed sleeve, and the other end abuts against the plug-in rod slidably arranged in the fixed sleeve, and a pulley is rotatably installed on the end of the plug-in rod away from the first spring.

[0012] The crack monitoring device for road slopes as described above: the instantaneous structure includes a plug-in cylinder slidably arranged on the support plate, the plug-in cylinder is fixedly connected to the fixed leg, and a sliding rod is also fixedly arranged on the plug-in cylinder, and a lifting plate is slidably arranged on the sliding rod; it also includes a second spring slidably arranged in the plug-in cylinder, one end of the second spring is fixedly connected to the bottom of the plug-in cylinder, and the other end abuts against the lifting plate.

[0013] The crack monitoring device for road slopes as described above: the shifting assembly includes a trigger plate slidably arranged in the guide member, a moving rod is fixedly arranged on the trigger plate, an abutment plate is fixedly arranged on one end of the moving rod away from the trigger plate, and the moving rod is slidably connected to a ring fixedly arranged on the fixed leg, and a third spring is also provided on the moving rod, one end of the third spring abuts against the ring, and the other end abuts against the abutment plate.

[0014] A crack monitoring method for road slopes is also proposed, which uses the crack monitoring device for road slopes as described above and includes the following steps: Step 1: Place the support plate vertically on the upper side of the crack, and then rotate the two-way screw according to the width of the crack to make the two sets of connecting plates at a suitable distance; Step 2: Press the support plate downwards, and the telescopic legs retract into the fixed legs. During this process, the guide member cooperates with the elastic structure to cause the telescopic legs to retract automatically and quickly, thereby triggering the shift assembly. Step 3: The triggered displacement assembly makes way for the instantaneous structure, so that the second spring can quickly release the elastic potential energy and drive the positioning rod slidingly set on the fixed leg into the slope to achieve the positioning of the support plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: By setting support members and adjusting members and utilizing the drive of a bidirectional screw, the spacing between the two sets of support members can be adjusted, thereby quickly adapting to cracks of different widths and facilitating the subsequent installation of support members on both sides of the crack. At the same time, the alignment line set on the support plate is used as an auxiliary line to ensure that the support plate and the crack are in a vertical state. The contact between the connecting plate and the slope surface can forcibly ensure that the support plate and the slope surface are in a parallel state, so that the distance between the crack meter as a whole and the slope surface is consistent, thereby reducing the deviation of the monitoring data; And by setting up a fixing mechanism, with the cooperation between the trigger 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 surface on the connecting plate can drive the telescopic part to retract. During the retraction process, the elastic structure on the telescopic part cooperates with the trigger component on the support part, which can drive the displacement component elastically arranged between the support part and the trigger part to quickly make way, releasing the blockage of the instantaneous structure. Then, the instantaneous structure quickly drives the positioning rod arranged on the support part to be vertically driven into the slope surface, realizing a quick connection between the support plate and the slope surface. With the help of the support plate, the standardization of the crack meter installation can be improved, and the error of subsequent monitoring can be reduced. The overall operation process is relatively simple. The subsequent secondary fixation with the anchor rod can improve the stability and firmness of the crack meter after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the structure of the crack monitoring device for road slopes.

[0017] Figure 2 This is a schematic diagram of the structure of the support and adjustment parts in the crack monitoring device for road slopes.

[0018] Figure 3 This is a schematic diagram of the structure of the support plate in the crack monitoring device for road slopes.

[0019] Figure 4 This is a schematic diagram of the structure of the fixing mechanism on the support plate in the crack monitoring device for road slopes.

[0020] Figure 5 This is a schematic diagram of the structure of the elastic structure and triggering component in the crack monitoring device for road slopes.

[0021] Figure 6 This is a schematic diagram of the structure of the support and telescopic parts in the crack monitoring device for road slopes.

[0022] Figure 7 Schematic diagram of the elastic structure in the crack monitoring device for road slopes.

[0023] Figure 8 This is a schematic diagram of the structure of the trigger component in the crack monitoring device for road slopes.

[0024] Figure 9 This is a schematic diagram of the structure of the coordination between the instantaneous structure and the displacement component, the trigger and the support plate in the crack monitoring device for the road slope.

[0025] Figure 10 This is a schematic diagram of the structure of the instantaneous structure, displacement component and trigger component in the crack monitoring device of the road slope.

[0026] Figure 11 Schematic diagram of the structure on the fixed leg in the crack monitoring device for road slopes.

[0027] In the figure: 1. crack meter; 101. anchor rod; 2. support plate; 201. bracket; 202. alignment line; 203. clamping groove; 3. bidirectional screw rod; 4. fixed leg; 5. threaded sleeve; 501. mounting plate; 6. plug-in sleeve; 7. telescopic leg; 701. connecting plate; 8. guide; 801. positioning groove; 802. inclined guide surface; 803. trigger groove; 804. clamping block; 9. fixed sleeve; 10. plug-in 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 DESCRIPTION

[0028] Various exemplary embodiments, features, and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

[0029] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0030] In addition, numerous specific details are provided in the following specific examples to better illustrate the present application. Those skilled in the art will appreciate that the present application can be practiced without certain specific details. In some instances, methods, means, and components well known to those skilled in the art are not described in detail in order to highlight the main purpose of the present application.

[0031] See also Figures 1-11 In an embodiment of the present invention, a crack monitoring device for a road slope includes: a crack meter 1, a support plate 2, and an anchor rod 101; Preferably, see Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 The above-mentioned support plate 2 is symmetrically fixed with two groups of brackets 201 along its length direction. The brackets 201 are elastic clamping rings. The brackets 201 can lock the crack meter 1. By setting the locking, a detachable connection between the crack meter 1 and the support plate 2 can be achieved.

[0032] In addition, the support plate 2 is also provided with an alignment line 202, which is set along the width direction of the support plate 2 and is the symmetry axis of the support plate 2 in the length direction. When the support plate 2 is actually installed, the alignment line 202 is made to coincide with the line connecting the first and last ends of the crack, so as to ensure that the support plate 2 and the crack are in a vertical state, thereby facilitating the installation of the crack meter 1 and improving the installation standardization of the crack meter 1. After the position of the support plate 2 is fixed, the two ends of the crack meter 1 are fixed to the slope surface using the anchor rod 101, which can further improve the stability of the crack meter 1 when monitoring cracks.

[0033] The support plate 2 is provided with a support member which is slidably mounted on the support plate 2. Two groups of support members are symmetrically arranged along the length direction of the support plate 2. The two groups of support members are connected to an adjustment member which is rotatably mounted on the support plate 2. The adjustment member can drive the two groups of support members to move away from or closer to each other. The adjusting member includes a bidirectional screw rod 3 rotatably mounted on the support plate 2, and two groups of bidirectional screw rods 3 are symmetrically arranged along the width direction of the support plate 2, and the two groups of bidirectional screw rods 3 are connected by a belt; The support member includes a mounting plate 501 that is slidably arranged along the length direction of the support plate 2. Two groups of threaded sleeves 5 are fixedly arranged on one side of the mounting plate 501 along its length direction. The two groups of threaded sleeves 5 are respectively threadedly connected to the two groups of bidirectional screw rods 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 screw rod 3. In addition, two groups of fixed legs 4 are symmetrically fixed on the other side of the mounting plate 501 along its length direction. Specifically, see Figure 1 、 Figure 2 One of the two sets of bidirectional screw rods 3 is coaxially fixed with a knob. Before testing the crack meter 1, the support plate 2 is first placed on the upper side of the crack, and then the knob is turned according to the width of the crack; then, the two sets of bidirectional screw rods 3 act synchronously, which can drive the threaded sleeve 5 to drive the two sets of mounting plates 501 and the fixing mechanisms on the mounting plates 501 to move closer to or away from each other, until the distance between the two sets of mounting plates 501 adapts to the width of the crack, and then the knob is stopped from being turned; subsequently, the support plate 2 is pressed downward to trigger the fixing mechanism, thereby fixing the support plate 2 above the crack, so that the crack meter 1 installed on the support plate 2 can monitor the crack in real time.

[0034] Specifically, see Figure 1 、 Figure 2 、 Figure 4 、 Figure 5-Figure 11 , the fixing mechanism includes a trigger assembly and a positioning assembly, the trigger assembly includes a trigger member and a telescopic member, the telescopic member is slidably connected to the support member, and the trigger member is fixedly connected to the support member; The telescopic member includes two groups of telescopic legs 7, which are slidably arranged in the two groups of fixed legs 4, and the two groups of telescopic legs 7 are fixedly connected by a connecting plate 701; In particular, see Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 The connecting plate 701 is kept parallel to the supporting plate 2. When the supporting plate 2 is positioned, the connecting plate 701 will contact the slope surface of the road slope. Under the contact and cooperation between the connecting plate 701 and the slope surface, it can ensure that the supporting plate 2 remains parallel to the slope surface, so that in the subsequent installation process, the distance between the crack meter 1 as a whole and the slope surface remains consistent, thereby improving the accuracy of the monitoring data of the crack meter 1.

[0035] Further, see Figure 1 、 Figure 2 、 Figure 4-11 The positioning assembly includes a transient structure fixedly connected to the support member, and the transient structure is connected to the trigger member through a displacement assembly. When the support plate 2 is pressed downward, 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 assembly to slide rapidly relative to the trigger member, thereby triggering the transient structure and pushing the positioning rod 22 slidingly provided on the support member to descend rapidly; Preferably, a socket ring 12 is fixedly provided on the above-mentioned fixed leg 4, and the positioning rod 22 is placed in the socket ring 12. In the initial state, due to the influence of its own gravity, the upper end of the positioning rod 22 is away from the support plate 2. In 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 surface. Then, under the support of the slope surface, the positioning rod 22 slides relative to the socket ring 12 and the fixed leg 4, and can contact the instantaneous structure. When the subsequent instantaneous structure is triggered, the instantaneous structure can force the positioning rod 22 to descend rapidly relative to the fixed leg 4 and hit the slope surface, thereby achieving the fixation of the support plate 2.

[0036] The trigger member includes a guide member 8 fixedly arranged on the fixed leg 4, and a positioning groove 801 and a trigger groove 803 are formed on the guide member 8. The trigger groove 803 is connected to the positioning groove 801 through an inclined guide surface 802. Specifically, see Figure 8 A clamping block 804 is fixedly provided on the above-mentioned guide member 8, and the clamping block 804 is slidably set in the clamping groove 203 opened on the support plate 2. Under the cooperation of the clamping block 804 and the clamping groove 203, the guide member 8 can follow the fixed leg 4 to slide left and right relative to the support plate 2.

[0037] The elastic structure includes a fixed sleeve 9 fixedly arranged on the telescopic leg 7, a first spring 15 is slidably arranged in 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 arranged in the fixed sleeve 9, and the plug rod 10 is rotatably mounted with a pulley 16 at one end away from the first spring 15; For details, see Figure 7 The first spring 15 is always in a compressed state, pushing the plug rod 10 to move toward the outside of the fixed sleeve 9 so that the pulley 16 fits with the guide member 8.

[0038] In the initial state, see Figure 4 、 Figure 5 、 Figure 6 、 Figure 8 、 Figure 9 , the pulley 16 is combined with the positioning groove 801, at this time, the telescopic leg 7 protrudes from the fixed leg 4, and the distance between the connecting plate 701 and the supporting plate 2 is at the maximum state; When the support plate 2 is positioned, the support plate 2 is pressed downward, and the reaction force of the slope surface on the connecting plate 701 can force the telescopic leg 7 to retract into the fixed leg 4. At the same time, the fixed sleeve 9 fixed to the telescopic leg 7 drives the pulley 16 to separate from the positioning groove 801; with the continuous retraction of the telescopic leg 7, the pulley 16 slides along the inclined guide surface 802, and 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 is separated from the inclined guide surface 802, as the support plate 2 continues to be pressed down, the pulley 16 is quickly combined with the trigger groove 803 under the action of the elastic potential energy released by the first spring 15; in this process, the pulley 16 that 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 realizing the fixed connection between the support plate 2 and the slope, so that the subsequent crack meter 1 can monitor the cracks in real time.

[0039] The instantaneous structure includes an inserting tube 6 slidably arranged on the support plate 2, the inserting tube 6 is fixedly connected to the fixed leg 4, and the mounting plate 501 is matched with the bidirectional screw rod 3 and the threaded sleeve 5. During the movement relative to the support plate 2, the inserting tube 6 and the positioning rod 22 can move synchronously with the mounting plate 501, so that the inserting tube 6 can always remain coaxial with the positioning rod 22, thereby facilitating the subsequent lowering and positioning action of the positioning rod 22, and the inserting tube 6 is also fixedly provided with a sliding rod 11, and a lifting plate 18 is slidably provided on the sliding rod 11; it also includes a second spring 19 arranged in the inserting tube 6, one end of the second spring 19 is fixedly connected to the bottom of the inserting tube 6, and the other end abuts against the lifting plate 18; The shift assembly includes a trigger plate 20 slidably disposed in the guide member 8, a moving rod 13 fixedly disposed on the trigger plate 20, an abutment plate 14 fixedly disposed on one end of the moving rod 13 away from the trigger plate 20, and the moving rod 13 is slidably connected to a collar 17 fixedly disposed on the fixed leg 4, and a third spring 21 is further 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; In particular, see Figure 9 、 Figure 10 、 Figure 11 The above-mentioned third spring 21 is always in a compressed state, pushing the abutment plate 14 to move toward the slide rod 11, thereby blocking the lower end of the plug-in tube 6, and in the initial state, the second spring 19 is compressed in the plug-in tube 6 and reserves a large elastic potential energy.

[0040] In combination with the above, when the support plate 2 is pressed downward until the pulley 16 is engaged with the trigger groove 803, the pulley 16 can push the trigger plate 20 to move toward the inside 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 retracted into the trigger groove 803 drives the abutment plate 14 away from the slide rod 11 under the connection of the moving rod 13, thereby releasing the bottom of the plug-in tube 6; then, the second spring 19 compressed in the plug-in tube 6 quickly releases its elastic potential energy, pushing the lifting plate 18 and the positioning rod 22 quickly 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 meter 1 is fixed to the slope using the anchor rod 101, so that the standardized installation between the crack meter 1 and the slope can be achieved.

[0041] A crack monitoring method for road slopes is also proposed, which uses the crack monitoring device for road slopes as described above and includes the following steps: Step 1: Place the support plate 2 vertically on the upper side of the crack, and then rotate the bidirectional screw 3 according to the width of the crack to ensure that the two sets of connecting plates 701 are at a suitable distance; Step 2: Press the support plate 2 downward, and the telescopic leg 7 retracts into the fixed leg 4. During this process, the guide 8 cooperates with the elastic structure to cause the telescopic leg 7 to retract automatically and quickly, thereby triggering the shift assembly; Step 3: The triggered displacement assembly gives way to the instantaneous structure, so that the second spring 19 can quickly release the elastic potential energy and drive the positioning rod 22 slidably set on the fixed leg 4 into the slope to achieve the positioning of the support plate 2.

[0042] 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.

[0043] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A road slope crack monitoring device, comprising: A crack meter (1), a support plate (2) and an anchor rod (101); characterized in that: A support member is slidably provided on the support plate (2), and two groups of the support members are symmetrically provided along the length direction of the support plate (2). The two groups of support members are connected to an adjusting member rotatably mounted on the support plate (2), and the adjusting member can drive the two groups of support members to move away from or closer to each other; The support member is provided with a fixing mechanism, the fixing mechanism includes a trigger assembly and a positioning assembly, the trigger assembly includes a trigger member and a telescopic member, the telescopic member is slidably connected to the support member, and the trigger member is fixedly connected to the support member; The positioning assembly includes a transient structure fixedly connected to the support member, and the transient structure is connected to the trigger member via a displacement assembly. When the support plate (2) is pressed downward, 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 assembly to slide rapidly relative to the trigger member, thereby triggering the transient structure and pushing the positioning rod (22) slidingly provided on the support member to descend rapidly.

2. A road slope crack monitoring device according to claim 1, characterized in that: The adjusting member comprises a bidirectional screw rod (3) rotatably mounted on the supporting plate (2), wherein two groups of the bidirectional screw rods (3) are symmetrically arranged along the width direction of the supporting plate (2), and the two groups of the bidirectional screw rods (3) are connected by a belt.

3. A road slope crack monitoring device according to claim 2, characterized in that: The support member comprises a mounting plate (501) slidably arranged along the length direction of the support plate (2), two groups of threaded sleeves (5) are fixedly arranged on one side of the mounting plate (501) along its length direction, the two groups of threaded sleeves (5) are respectively threadedly connected to the two groups of bidirectional screw rods (3), and two groups of fixed legs (4) are symmetrically fixedly arranged on the other side of the mounting plate (501) along its length direction.

4. A road slope crack monitoring device according to claim 3, characterized in that: The telescopic member comprises two groups of telescopic legs (7), the two groups of telescopic legs (7) are respectively slidably arranged in the two groups of fixed legs (4), and the two groups of telescopic legs (7) are fixedly connected via a connecting plate (701).

5. The crack monitoring device for road slope according to claim 3, characterized in that: The trigger member comprises a guide member (8) fixedly arranged on the fixed leg (4), the guide member (8) being provided with a positioning groove (801) and a trigger groove (803), and the trigger groove (803) being connected to the positioning groove (801) via an inclined guide surface (802).

6. The crack monitoring device for road slope according to claim 4, characterized in that: The elastic structure comprises a fixed sleeve (9) fixedly arranged on the telescopic leg (7), a first spring (15) being slidably arranged in the fixed sleeve (9), one end of the first spring (15) being in contact with the bottom of the fixed sleeve (9), and the other end being in contact with a plug-in rod (10) slidably arranged in the fixed sleeve (9), and a pulley (16) being rotatably mounted on one end of the plug-in rod (10) away from the first spring (15).

7. The crack monitoring device for road slope according to claim 3, characterized in that: The instantaneous structure includes a plug-in tube (6) slidably arranged on the support plate (2), the plug-in tube (6) is fixedly connected to the fixed leg (4), and a slide rod (11) is fixedly arranged on the plug-in tube (6), and a lifting plate (18) is slidably arranged on the slide rod (11); and also includes a second spring (19) slidably arranged in the plug-in tube (6), one end of the second spring (19) is fixedly connected to the bottom of the plug-in tube (6), and the other end abuts against the lifting plate (18).

8. The crack monitoring device for road slope according to claim 5, characterized in that: The shift assembly includes a trigger plate (20) slidably arranged in the guide member (8), a moving rod (13) is fixedly arranged on the trigger plate (20), an abutment plate (14) is fixedly arranged on one end of the moving rod (13) away from the trigger plate (20), and the moving rod (13) is slidably connected to a collar (17) fixedly arranged on the fixed leg (4), and a third spring (21) is further arranged 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).

9. A method for monitoring cracks on a road slope, using the device for monitoring cracks on a road slope as claimed in claim 1, characterized in that: The steps include: Step 1: Place the support plate (2) vertically on the upper side of the crack, and then rotate the bidirectional screw (3) according to the width of the crack to place the two sets of connecting plates (701) at a suitable distance; Step 2: Press the support plate (2) downward, and the telescopic leg (7) retracts into the fixed leg (4). During this process, the guide (8) cooperates with the elastic structure to cause the telescopic leg (7) to retract automatically and quickly, thereby triggering the shift assembly; Step 3: The triggered displacement assembly makes way for the instantaneous structure, so that the second spring (19) can quickly release the elastic potential energy, and the positioning rod (22) slidingly arranged on the fixed leg (4) is driven into the slope to achieve the positioning of the support plate (2).

Images