Device and method for measuring subsidence amount of road surface

Abstract

The invention relates to the technical field of road measurement, in particular to a device for measuring the subsidence amount of a road surface and a measuring method.The device comprises a transverse plate and a placing rod used for placing the transverse plate at the subsidence position of the road surface, a plurality of sliding rods are arranged on the transverse plate in the length direction of the transverse plate at intervals, and the sliding rods penetrate through the transverse plate and slide on the transverse plate in the vertical direction; a plurality of scale plates are arranged on one sides of the sliding rods, the multiple scale plates correspond to the multiple sliding rods, indicating plates are arranged on the scale plates in a sliding mode, pressing plates are arranged on the sliding rods, the pressing plates abut against the sides, away from the ground, of the indicating plates, and the pressing plates drive the indicating plates to move synchronously when moving along with the sliding rods. A fixing piece is arranged in the transverse plate and used for fixing the position of the sliding rod. The method has the effect of improving the measurement efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of road measurement, and in particular to a device and method for measuring road subsidence. Background Art

[0002] Pavement subsidence measurement is the premise for determining the treatment plan for highway asphalt pavement subsidence. Subsidence measurement data can provide a scientific basis for the repair and maintenance of the pavement, help construction personnel adjust the filling rate, predict the settlement trend, and verify the rationality of the design, thereby improving the construction quality of the project. Therefore, highway pavement subsidence measurement is an important means to ensure the safety and smooth operation of highways, and is also a necessary measure to improve project quality and prevent geological disasters.

[0003] The patent document with the announcement number CN110243341B discloses a road subsidence measuring device, which includes a rectangular plate and a rectangular slider, which are slidably matched with the rectangular plate, and a measuring rod is slidably arranged on the rectangular block in the vertical direction. When measuring, the position of the rectangular plate is adjusted according to the range of the subsidence, so that the rectangular slider and the rectangular plate are placed across the subsidence, and the measuring rod is lowered for measurement after leveling.

[0004] In the above-mentioned related technologies, when measuring, the measuring position of the measuring rod needs to be repeatedly adjusted to measure multiple points of the subsidence, which affects the measurement efficiency. In addition, when measuring, the lane needs to be closed. The traffic volume on the highway is large, and the pressure to maintain the highway is high. The low measurement efficiency poses a great threat to the safety of the operators. Summary of the invention

[0005] In order to improve the measurement efficiency, the present application provides a device and a method for measuring the amount of road subsidence. In a first aspect, the present application provides a device for measuring the amount of road subsidence.

[0006] The following technical solutions are adopted:

[0007] A device for measuring the amount of road subsidence, comprising a transverse plate and a placement rod for placing the transverse plate at a road subsidence location, wherein a plurality of sliding rods are arranged at intervals on the transverse plate along its length direction, the sliding rods penetrate the transverse plate and slide on the transverse plate in a vertical direction, a scale plate is arranged on one side of the sliding rod, the scale plate and the plurality of sliding rods are arranged correspondingly, an indicator plate is slidably arranged on the scale plate, a pressure plate is arranged on the sliding rod, the pressure plate abuts against a side of the indicator plate facing away from the ground, the pressure plate drives the indicator plate to move synchronously with the movement of the sliding rod, a fixing member is arranged in the transverse plate, the fixing member is used to fix the position of the sliding rod.

[0008] By adopting the above technical solution, the cross plate is placed at the sunken part of the road surface through the placing rod, and then the sliding rod is released. Multiple sliding rods move toward the sunken part under the action of their own gravity, and the sliding rod drives the indicator plate to move synchronously through the pressure plate while sliding until it abuts against the sunken part. Then the sliding rod is fixed by the fixing part, and the measurement value is read by the position of the indicator plate on the scale plate, so that multiple points at the sunken part can be measured at the same time, thereby improving the measurement efficiency.

[0009] Optionally, a guide rod is rotatably provided at one end of the sliding rod close to the ground, and the rotation plane of the guide rod is perpendicular to the plane where the multiple sliding rods are located. A placement groove is opened in the sliding rod, and a control member is provided in the placement groove. The control member is connected to the guide rod to drive the guide rod to rotate, and the rotation of the guide rod corresponds to different points on the sunken part of the road surface.

[0010] By adopting the above technical solution, the slide rod is in contact with the subsidence through the guide rod, and the control member drives the guide rod to rotate, so that the same slide rod can measure multiple points at the subsidence only by sliding, thereby improving the measurement efficiency.

[0011] Optionally, the control member includes a control rod, a gear and a limit member, the control rod slides in a vertical direction in the sliding rod, the gear and the guide rod are coaxially connected, a tooth groove is provided on the side of the control rod, the tooth groove and the gear are meshed, the limit member is arranged in the sliding rod, and the limit member and the gear are connected to fix the guide rod.

[0012] By adopting the above technical solution, the control rod is moved, the control rod drives the gear to rotate, the gear rotation drives the guide rod to rotate, and after the guide rod rotates, it is fixed by a limiter so that it can slide with the slide rod to measure the sinking position.

[0013] Optionally, the limit member includes a limit plate, a clamping block and an elastic member 1, the limit plate and the gear are coaxially connected, a plurality of clamping grooves are provided on the side of the limit plate, the clamping block slides in the placement groove in the direction toward the limit plate, the clamping block and the clamping groove are buckled, the elastic member 1 is arranged in the placement groove, the elastic member 1 is connected to the clamping block to drive the clamping block and the clamping groove to buckle, and a slope is provided on the side of the clamping block.

[0014] By adopting the above technical solution, the rotation of the guide rod drives the limit plate to rotate, and the block is separated from the slot under the action of the inclined surface. When the limit plate drives another slot to rotate to the block, the elastic member drives the block to move to engage with the slot, and then fixes the guide rod after the guide rod rotates to a certain angle.

[0015] Optionally, a pull frame is slidably provided on the transverse plate, the pull frame is sleeved on the outside of the slide rod, a stop block is provided on the side of the slide rod, and the stop block is provided on the side of the pull frame facing away from the ground.

[0016] By adopting the above technical solution, the pull frame is moved, and the pull frame and the stopper are abutted, so as to drive multiple slide bars to move in the opposite direction at the same time, thereby realizing the adjustment of the position of the guide rod.

[0017] Optionally, the indicator plates are arranged in multiple groups along the horizontal direction, and the multiple groups of indicator plates are arranged in one-to-one correspondence with multiple sliding rods, and each multiple indicator plates are arranged as a group, and the multiple indicator plates are arranged in one-to-one correspondence with multiple card slots. A middle hole is horizontally opened on the side of the sliding rod, and an inclined groove is opened on the control rod. An intermediate rod is arranged on the pressure plate, and the intermediate rod is slidably set in the inclined groove through the middle hole. Different positions in the inclined groove abut against the intermediate rod to drive the pressure plate to move in the horizontal direction.

[0018] By adopting the above technical solution, when the control rod moves to the baffle, the pressure plate moves to the side of the remaining indicator plates away from the ground. The control rod drives the guide rod to rotate and drives the pressure plate to move horizontally through the inclined groove until the pressure plate moves to the side of the adjacent indicator plate away from the ground, so as to drive the corresponding indicator plate to move when measuring again.

[0019] Optionally, a through hole is provided on the scale plate, and the indicator plate includes a sliding portion, which is slidably arranged in the through hole, and a mounting groove is provided on the sliding portion, and an elastic member 2 and a top plate are arranged in the mounting groove. The top plate slides in a direction toward the outside of the mounting groove, and the top plate abuts against the inner wall of the through hole. The elastic member 2 and the top plate are connected to drive the top plate to abut against the inner wall of the through hole.

[0020] By adopting the above technical solution, the top plate and the inner wall of the through hole abut against each other, which increases the friction when the indicator plate moves. After the specified point is measured, the deviation of the indicator plate relative to the scale plate is reduced to facilitate reading the measured value.

[0021] Optionally, when the sliding rod slides under the action of its own gravity, it drives the top plate to slide along with it.

[0022] By adopting the above technical solution, the phenomenon of the top plate interfering with the sliding of the slide bar can be reduced.

[0023] Optionally, the fixing member includes a screw rod, a fixing rod and a clamping rod, the fixing rod is slidably arranged in the cross plate, and there are multiple clamping rods corresponding to the multiple sliding rods. The clamping rod is arranged on one side of the fixing rod, and the screw rod and the cross plate are threadedly connected. One end of the screw rod is rotatably connected to the fixing rod, and the other end extends to the outside of the cross plate. When the clamping rod moves to abut against the sliding rod, the sliding rod is fixed.

[0024] By adopting the above technical solution, the screw rod is rotated, the screw rod drives the fixing rod to move, and the fixing rod drives the clamping rod to abut against the side of the sliding rod to fix the sliding rod.

[0025] In a second aspect, the present application provides a method for measuring road subsidence

[0026] The following technical solutions are adopted:

[0027] A method for measuring road subsidence, using the above-mentioned device for measuring road subsidence, comprises the following steps:

[0028] S1, placing the horizontal plate at the road surface sedimentation through the placing rod;

[0029] S2, releasing multiple slide bars at the same time, and the slide bars drive the indicator plate to move through the pressure plate until the ends of the slide bars abut against the road surface;

[0030] S3, pull the pull frame to drive the slide rod to move in the opposite direction until the control rod and the baffle plate abut against each other, and the movement of the control rod drives the guide rod to rotate until the card block is engaged with the adjacent card slot, and at the same time, the control rod drives the pressure plate to move to correspond to another indicator plate through the middle rod;

[0031] S4, move the pull frame to the horizontal plate, slide the slide bar downward again, and drive the corresponding indicator plate to move, and measure another point of the subsidence;

[0032] S5, repeat the above operation, repeatedly pull the pull frame, adjust the pressure plate and the multiple indicator plates in turn, and adjust the position of the guide rod accordingly, and measure the road surface sedimentation multiple times;

[0033] S6. After all measurements are completed, the screw is rotated to drive the side of the clamping rod and the sliding rod to abut against each other, and the cross plate is removed from the sunken place. The corresponding scales of the multiple groups of indicator plates are recorded.

[0034] To summarize, the present application includes the following beneficial technical effects: through multiple sliding rods on the horizontal plate, the sliding rods slide under their own gravity during measurement, driving the end of the guide rod to abut against the road surface sedimentation, and then the measurement value is read through the corresponding scale of the indicator plate, thereby realizing simultaneous measurement of multiple points at the subsidence and improving measurement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the structure of the device for measuring road subsidence in the present application.

[0036] Figure 2 It is a partial schematic diagram of the device for measuring road subsidence in the present application.

[0037] Figure 3 It is a schematic diagram of the structure of the fixing parts in the device for measuring the road surface settlement amount of the present application.

[0038] Figure 4 It is a structural schematic diagram of a scale plate in a device for measuring road subsidence in the present application.

[0039] Figure 5 It is a schematic diagram of the structure of the control components in the device for measuring road subsidence in the present application.

[0040] Figure 6 It is a partial exploded schematic diagram of a control rod and an intermediate rod in the device for measuring road subsidence in the present application.

[0041] Figure 7 It is a schematic diagram of the structure of the indicator plate in the device for measuring road subsidence in the present application.

[0042] Figure 8 It is a partial exploded schematic diagram of the sliding part and the top plate in the device for measuring the road surface settlement amount in the present application.

[0043] 1. The cam is provided with a plurality of locking cams, and a plurality of locking cams are provided with a plurality of locking cams. The plurality of locking cams are provided with a plurality of locking cams, and a plurality of locking cams are provided with a plurality of locking cams. DETAILED DESCRIPTION

[0044] The following is combined with Figure 1-8 This application is described in further detail.

[0045] The present application discloses a device for measuring road subsidence.

[0046] Reference Figures 1 to 8 The device for measuring the road subsidence comprises a horizontal plate 1, a slide bar 2 and a scale plate 3. The slide bar 2 penetrates the horizontal plate 1 and slides on the horizontal plate 1 in a vertical direction. The scale plate 3 is arranged on the side of the horizontal plate 1 away from the ground, and the scale plate 3 is arranged in a vertical direction. The scale plate 3 and the multiple slide bars 2 are arranged correspondingly. An indicator plate 4 is slidably arranged on the scale plate 3. The indicator plate 4 corresponds to the scale on the scale plate 3. A pressing plate 5 is arranged on the slide bar 2. The pressing plate 5 is arranged on the side of the indicator plate 4 away from the ground. Placement rods 11 are arranged at both ends of the horizontal plate 1. When measuring, the horizontal plate 1 is placed on the road surface through the placing rods 11. After leveling, the slide bar 2 is released. The slide bar 2 slides under the action of its own gravity. At the same time, the pressing plate 5 abuts against the indicator plate 4 to drive the indicator plate 4 to slide. After the end of the slide bar 2 abuts against the road surface, the scale on the scale plate 3 corresponding to the indicator plate 4 is the subsidence of the road surface at that point.

[0047] Reference Figure 2and Figure 3 There are multiple slide bars 2, which are arranged at intervals along the length direction of the horizontal plate 1. There are multiple scale plates 3 corresponding to the multiple slide bars 2. A fixing member 6 is provided in the horizontal plate 1, and the fixing member 6 is used to fix the position of the slide bar 2. After the slide bar 2 moves to abut against the road surface, the slide bar 2 is fixed by the fixing member 6, and then the horizontal plate 1 is taken out from the sunken part of the road surface to record the measured value. At the same time, multiple points are measured at the same time by multiple slide bars 2, which improves the measurement efficiency.

[0048] Reference Figure 3 The fixing member 6 includes a screw rod 61, a fixing rod 62 and a clamp rod 63. The fixing rod 62 is slidably arranged in the horizontal plate 1. A plurality of clamp rods 63 are arranged corresponding to the plurality of slide bars 2, and the plurality of clamp rods 63 are arranged on the side of the fixing rod 62. The screw rod 61 is threadedly connected to the horizontal plate 1. The screw rod 61 is arranged along the length direction of the fixing rod 62. One end of the screw rod 61 is rotatably connected to the fixing rod 62, and the other end extends to the outside of the horizontal plate 1. When the slide bar 2 needs to be fixed, the slide bar 2 is rotated, the slide bar 2 drives the fixing rod 62 to move, and the fixing rod 62 drives the clamp rod 63 to abut against the side of the slide bar 2 to fix the slide bar 2.

[0049] Reference Figure 4 and Figure 5 A guide rod 7 is arranged at one end of the slide bar 2 close to the ground. The guide rod 7 is rotatably arranged at the end of the slide bar 2, and the rotation plane of the guide rod 7 is arranged perpendicular to the plane where the multiple slide bars 2 are located. A placement groove 21 is provided in the slide bar 2, and a control member 8 is arranged in the placement groove 21. The control member 8 is used to drive the guide rod 7 to rotate. During measurement, the control member 8 drives the guide rod 7 to rotate, so that the guide rod 7 corresponds to different positions in the road surface subsidence, so that each slide bar 2 can detect multiple points in multiple sedimentation places, further improve the measurement points, and then improve the detection efficiency, and at the same time, the road surface subsidence condition can be more comprehensively monitored.

[0050] Reference Figure 4 and Figure 5 The control member 8 includes a control rod 81, a gear 82 and a limit member 83. The control rod 81 is slidably arranged in the slide bar 2 along the vertical direction. The gear 82 is coaxially connected to the rotating end of the guide rod 7. A tooth groove 811 meshing with the gear 82 is provided on the side of the control rod 81. The end of the control rod 81 away from the guide rod 7 extends to the outside of the slide bar 2. The limit member 83 is arranged in the slide bar 2 for fixing the guide rod 7. A baffle 31 is arranged on the scale plate 3. The slide bar 2 is moved, and the slide bar 2 drives the control rod 81 to abut against the baffle 31. At the same time, the control rod 81 slides. The control rod 81 slides and drives the guide rod 7 to rotate through the gear 82, thereby rotating the position of the guide rod 7. At the same time, the limit member 83 fixes the guide rod 7 so that multiple points can be measured through the guide rod 7.

[0051] Reference Figure 4 and Figure 5 The limiting member 83 includes a limiting plate 831, a block 832 and an elastic member 833. The limiting plate 831 and the gear 82 are coaxially arranged. A plurality of slots 834 are provided on the side of the limiting plate 831. The block 832 is slidably arranged in the placement slot 21 in the direction toward the limiting plate 831. The block 832 and the slot 834 are buckled. The elastic member 833 can be set as a spring. One end of the spring is connected to the inner wall of the slide rod 2, and the other end is connected to the side of the block 832 away from the limiting plate 831. The elastic member 833 is used to drive the block 832 to move toward the limiting plate 831, so that the block 832 and the slot 834 remain in a buckled state. A slope 835 is provided on the side of the block 832. When the limit plate 831 rotates, the block 832 can be pushed to move by the slope 835, and the elastic member 1 833 is compressed at the same time. When the limit plate 831 rotates and drives another slot 834 to the block 832, the block 832 is again engaged with the slot 834 under the action of the elastic member 1 833, thereby fixing the guide rod 7 in the corresponding position. In this embodiment, there are three slots 834, and the three slots 834 are distributed at equal distances. When the block 832 is respectively in the three slots 834, the guide rod 7 is respectively in a vertical or left and right tilted state. In other embodiments, the number of slots 834 or the distance between two adjacent slots 834 can be increased or decreased according to the measurement requirements to improve the measurement efficiency.

[0052] Reference Figure 1 and Figure 2 In order to facilitate the adjustment of the position of the control rod 81, a pull frame 9 is slidably arranged on the horizontal plate 1, and the pull frame 9 is sleeved on the outside of the slide bar 2, and the pull frame 9 is slidably arranged on the outside of the slide bar 2. A stopper 23 is arranged on the side of the slide bar 2, and the stopper 23 is arranged on the side of the pull frame 9 away from the ground. A pull rod 91 is arranged on the pull frame 9. When the position of the control rod 81 needs to be adjusted, the pull rod 91 is pulled to drive the pull frame 9 to move, and the pull frame 9 continues to move after contacting the stopper 23 until the pull frame 9 and the stopper 23 on multiple slide bars 2 are all contacted, and then the multiple slide bars 2 are driven to move until the control rod 81 is driven to move to the baffle 31, and the baffle 31 is driven to contact the control rod 81, and then the position of the control rod 81 is adjusted, and then the position of the guide rod 7 is adjusted. After the adjustment is completed, the pull frame 9 is slid to the horizontal plate 1 to reduce the phenomenon that the pull frame 9 interferes with the movement of the slide bar 2 for measurement.

[0053] Reference Figures 4 to 6In order to record the values ​​of multiple measurements for subsequent reading, multiple groups of indicator plates 4 are arranged in the horizontal direction. Multiple groups of indicator plates 4 are arranged one by one with multiple slide bars 2. Each multiple indicator plates 4 is arranged as one group. Multiple indicator plates 4 are arranged at equal intervals along the arrangement direction of multiple slide bars 2. Multiple groups of scales are arranged on the scale plate 3 corresponding to the multiple indicator plates 4. An intermediate rod 51 is arranged on the pressure plate 5, an intermediate hole 22 is opened in the horizontal direction on the side of the slide bar 2, and an inclined groove 812 is opened on the control rod 81. The intermediate rod 51 passes through the intermediate hole 22 and slides in the inclined groove 812. In the initial state, the movement of the slide bar 2 drives the pressure plate 5 to move, and the movement of the pressure plate 5 drives the indicator plate 4 to move. After the measurement is completed, the slide bar 2 is driven to move in the opposite direction by the pull frame 9 until the control rod 81 and the baffle plate 31 abut. When the control rod 81 moves to the baffle plate 31, the pressure plate 5 moves to the side of the remaining indicator plates 4 away from the ground, and then the control rod 81 moves to drive the guide rod 7 to move. At the same time, the different positions in the inclined groove 812 cooperate with the middle rod 51 to drive the pressure plate 5 to move in the horizontal direction. After the guide rod 7 rotates to a specified angle, the pressure plate 5 moves to the side of another indicator plate 4 away from the ground, so that when the slide bar 2 is released again, the pressure plate 5 drives the indicator plate 4 to slide. Repeating the above operations can complete multiple measurements in sequence, thereby improving the measurement efficiency. After the measurement is completed, it is sufficient to read the scales corresponding to the indicator plates 4. In the present embodiment, every three indicator plates 4 are arranged as a group, and the positions of the three indicator plates 4 and the three slots 834 are opposite, that is, when the guide rod 7 is rotated to different angles, the pressure plate 5 moves to the corresponding indicator plates 4 respectively. In other embodiments, the number of each group of indicator plates 4 and the slots 834 can be adaptively adjusted according to actual measurement requirements.

[0054] Reference Figure 7 and Figure 8In order to reduce the phenomenon that the indicator plate 4 is offset after moving with the slide bar 2, a through hole 32 is opened on the scale plate 3. The indicator plate 4 includes an indicating arrow 41, a sliding portion 42 and abutting portion 43. The sliding portion 42 is arranged between the abutting portion 43 and the indicating arrow 41. The sliding portion 42 is slidably arranged in the through hole 32, and the abutting portion 43 cooperates with the pressure plate 5. The indicating arrow 41 corresponds to the indicating scale on the scale plate 3. A mounting groove 421 is provided on the sliding portion 42, and a top plate 422 is slidably provided in the mounting groove 421. The top plate 422 can slide until it abuts against the inner wall of the through hole 32. An elastic member 423 is provided in the mounting groove 421. The elastic member 423 can be set as a spring. One end of the spring is connected to the top plate 422, and the other end is connected to the inner wall of the mounting groove 421. The elastic member 423 is used to drive the top plate 422 to abut against the inner wall of the through hole 32 to increase the friction force when the sliding portion 42 slides. The friction force is less than the gravity of the sliding rod 2, so that the sliding rod 2 can drive the indicating plate 4 to slide, and after the sliding rod 2 and the indicating plate 4 are separated, the sliding deviation of the indicating plate 4 is reduced, so that after the measurement is completed, each indicating plate 4 can be fixed at a specified position.

[0055] The implementation principle of the present application is: the slide bar 2 is repeatedly moved in the opposite direction by the pull frame 9, and the slide bar 2 drives the guide rod 7 to rotate through the control rod 81 when moving in the opposite direction. Each time the guide rod 7 rotates a specified angle, it drives the pressure plate 5 to move to the corresponding indicator plate 4 in turn, and then the slide bar 2 moves under the action of its own gravity, driving the guide rod 7 to respectively contact multiple points in the subsidence, and then the subsidence amount is measured by the position of the corresponding indicator plate 4 on the scale plate 3. By adjusting the angles of multiple slide bars 2 and guide rods 7, it is possible to measure multiple points in multiple groups of the sedimentation area, so as to more comprehensively analyze the measurement data and improve the measurement efficiency.

[0056] The present application also discloses a method for measuring road surface subsidence, which uses the above-mentioned device for measuring road surface subsidence.

[0057] A method for measuring road subsidence comprises the following steps:

[0058] S1, placing the horizontal plate 1 at the road surface sedimentation position through the placing rod 11;

[0059] S2, release multiple slide bars 2 at the same time, and the slide bars 2 drive the indicator plate 4 to move through the pressure plate 5 until the end of the slide bar 2 abuts against the road surface;

[0060] S3, pull the pull frame 9 to drive the slide bar 2 to move in the opposite direction until the control rod 81 abuts against the baffle 31, and the control rod 81 moves to drive the guide rod 7 to rotate until the block 832 engages with the adjacent slot 834, and at the same time, the control rod 81 drives the pressure plate 5 to move to correspond to the other indicator plate 4 through the intermediate rod 51;

[0061] S4, the pull frame 9 is moved to the horizontal plate 1, the slide bar 2 slides downward again, and drives the corresponding indicator plate 4 to move, and another point of the subsidence is measured;

[0062] S5, repeat the above operation, repeatedly pull the pull frame 9, adjust the pressure plate 5 and the multiple indicator plates 4 in turn, and adjust the position of the guide rod 7 accordingly, and measure the road surface sedimentation multiple times;

[0063] S6, after all the measurements are completed, the rotating screw 61 drives the clamping rod 63 to abut against the side of the sliding rod 2, and the cross plate 1 is taken out from the sunken place, and the scales corresponding to the multiple groups of indicator plates 4 are recorded.

[0064] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A device for measuring road subsidence, comprising a transverse plate (1) and a placement rod (11) for placing the transverse plate (1), characterized in that: A plurality of slide bars (2) are arranged at intervals along the length direction of the transverse plate (1), the slide bars (2) penetrate the transverse plate (1) and slide on the transverse plate (1) in a vertical direction, a scale plate (3) is arranged on one side of the slide bar (2), the scale plate (3) and the plurality of slide bars (2) are arranged correspondingly, an indicator plate (4) is slidably arranged on the scale plate (3), a pressure plate (5) is arranged on the slide bar (2), the pressure plate (5) and the indicator plate (4) are in contact with each other on the side facing away from the ground, and the pressure plate (5) drives the indicator plate (4) to move synchronously with the movement of the slide bar (2), and a fixing member (6) is arranged in the transverse plate (1), and the fixing member (6) is used to fix the position of the slide bar (2).

2. The device for measuring road subsidence according to claim 1, characterized in that: A guide rod (7) is rotatably arranged at one end of the slide bar (2) close to the ground, and the rotation plane of the guide rod (7) is perpendicular to the plane where the multiple slide bars (2) are located. A placement groove (21) is provided in the slide bar (2), and a control member (8) is arranged in the placement groove (21). The control member (8) is connected to the guide rod (7) to drive the guide rod (7) to rotate, and the rotation of the guide rod (7) corresponds to different points on the sunken part of the road surface.

3. The device for measuring road subsidence according to claim 2, characterized in that: The control member (8) comprises a control rod (81), a gear (82) and a stopper (83); the control rod (81) slides in the slide rod (2) along a vertical direction; the gear (82) and the guide rod (7) are coaxially connected; a tooth groove (811) is provided on a side surface of the control rod (81); the tooth groove (811) and the gear (82) are meshed; the stopper (83) is arranged in the slide rod (2); the stopper (83) and the gear (82) are connected to fix the guide rod (7).

4. The device for measuring road subsidence according to claim 3, characterized in that: The limiting member (83) comprises a limiting plate (831), a clamping block (832) and an elastic member 1 (833); the limiting plate (831) and the gear (82) are coaxially connected; a plurality of clamping grooves (834) are provided on the side of the limiting plate (831); the clamping block (832) slides in the placement groove (21) in a direction toward the limiting plate (831); the clamping block (832) and the clamping groove (834) are engaged; the elastic member 1 (833) is arranged in the placement groove (21); the elastic member 1 (833) and the clamping block (832) are connected to drive the clamping block (832) and the clamping groove (834) to engage; and a slope (835) is provided on the side of the clamping block (832).

5. The device for measuring road subsidence according to claim 3, characterized in that: A pull frame (9) is slidably arranged on the transverse plate (1), the pull frame (9) is sleeved on the outside of the slide bar (2), a stopper (23) is arranged on the side of the slide bar (2), the stopper (23) is arranged on the side of the pull frame (9) facing away from the ground, and a baffle (31) is arranged on the scale plate (3), the baffle (31) is used to abut against the control rod (81) to drive the control rod (81) to move relative to the slide bar (2).

6. The device for measuring road subsidence according to claim 5, characterized in that: The indicator plates (4) are arranged in multiple groups in the horizontal direction. The multiple groups of indicator plates (4) and the multiple sliding bars (2) are arranged in a one-to-one correspondence. Each multiple indicator plates (4) are arranged as a group. The multiple indicator plates (4) and the multiple card slots (834) are arranged in a one-to-one correspondence. A middle hole (22) is horizontally opened on the side of the sliding bar (2). An inclined groove (812) is opened on the control rod (81). An intermediate rod (51) is arranged on the pressure plate (5). The intermediate rod (51) is slidably arranged in the inclined groove (812) through the middle hole (22). Different positions in the inclined groove (812) abut against the intermediate rod (51) to drive the pressure plate (5) to move in the horizontal direction.

7. The device for measuring road subsidence according to claim 6, characterized in that: The scale plate (3) is provided with a through hole (32), and the indicating plate (4) comprises a sliding part (42), wherein the sliding part (42) is slidably arranged in the through hole (32), and the sliding part (42) is provided with a mounting groove (421), wherein a second elastic member (423) and a top plate (422) are arranged in the mounting groove (421), and the top plate (422) slides in a direction toward the outside of the mounting groove (421), and the top plate (422) abuts against the inner wall of the through hole (32), and the second elastic member (423) and the top plate (422) are connected to drive the top plate (422) to abut against the inner wall of the through hole (32).

8. The device for measuring road subsidence according to claim 7, characterized in that: When the sliding rod (2) slides under the action of its own weight, it drives the top plate (422) to slide along with it.

9. The device for measuring road subsidence according to claim 1, characterized in that: The fixing member (6) comprises a screw rod (61), a fixing rod (62) and a clamping rod (63); the fixing rod (62) is slidably arranged in the transverse plate (1); a plurality of clamping rods (63) and a plurality of sliding rods (2) are arranged correspondingly; the clamping rod (63) is arranged on one side of the fixing rod (62); the screw rod (61) and the transverse plate (1) are threadedly connected; one end of the screw rod (61) is rotatably connected to the fixing rod (62), and the other end extends to the outside of the transverse plate (1); when the clamping rod (63) moves to abut against the sliding rod (2), the sliding rod (2) is fixed.

10. A method for measuring road subsidence, using the device for measuring road subsidence as claimed in claim 7, characterized in that: The steps include: S1, placing the horizontal plate (1) on the road surface sedimentation place through the placing rod (11); S2, releasing the plurality of slide bars (2) at the same time, the slide bars (2) drive the indicator plate (4) to move via the pressure plate (5) until the end of the slide bar (2) contacts the road surface; S3, pulling the pull frame (9) drives the slide bar (2) to move in the opposite direction until the control bar (81) and the baffle plate (31) abut against each other, and the control bar (81) moves to drive the guide bar (7) to rotate until the block (832) engages with the adjacent slot (834), and at the same time, the control bar (81) drives the pressure plate (5) to move to correspond to the other indicator plate (4) through the intermediate bar (51); S4, the pull frame (9) is moved to the horizontal plate (1), the slide bar (2) slides downward again, and drives the corresponding indicator plate (4) to move, and another point of the subsidence is measured; S5, repeat the above operation, repeatedly pull the pull frame (9), adjust the pressure plate (5) and the plurality of indicator plates (4) in turn, and adjust the position of the guide rod (7) accordingly, and perform multiple measurements on the road surface sedimentation area; S6, after all measurements are completed, the screw rod (61) is rotated to drive the clamping rod (63) and the side of the slide rod (2) to abut against each other, and the horizontal plate (1) is taken out from the sunken position, and the corresponding scales of the multiple groups of indicator plates (4) are recorded.

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