Karst roadbed monitoring device

Abstract

The utility model belongs to the field of monitoring devices, and particularly relates to a karst roadbed monitoring device which comprises a base and a movable adjusting device. A mounting seat is mounted on the movable adjusting device, a servo motor is fixedly mounted at the top of the mounting seat, a gear is fixedly mounted at the output end of the servo motor, and a rack is in transmission connection with one side of the gear; a servo motor is driven to enable a gear to be in transmission fit with a rack during working, a mounting base is driven to perform corresponding horizontal displacement, the detection area of the ground penetrating radar is adjusted, and when the distance between the detection area of the ground penetrating radar and a roadbed is too high, a hydraulic cylinder is driven to enable a piston rod at the output end to perform telescopic movement; according to the ground penetrating radar, linkage is generated on the connecting block in the moving process, the connecting block conducts circumferential movement with the hinged position of the connecting rod as the axis, adaptive adjustment is conducted on the height of the ground penetrating radar, the movable monitoring function is achieved, the problem that operation is complex when a monitoring point position is replaced is solved, and the adaptability in use is improved.

Description

Technical Field

[0001] The utility model relates to the field of monitoring devices, in particular to a karst roadbed monitoring device. Background Art

[0002] Construction projects in karst-rich areas often experience uneven and cluttered surfaces, including rock sprouts and karst gullies. Underground karst caves undermine the integrity of the rock mass, and changes in karst hydrodynamic conditions can cause subsidence in the overlying soil layer, all of which affect project stability to varying degrees. The engineering geological problems encountered vary depending on the project type. Common karst engineering geological problems encountered in industrial and civil construction projects include foundation collapse and uneven subsidence. In underground projects, these problems may include cavern surrounding rock instability and water inrush. In road and bridge construction, karst can cause roadbed subsidence.

[0003] Chinese patent number CN202320646191.3 discloses a karst roadbed collapse monitoring and early warning device, which includes N rope-tensioned structures arranged at intervals on the karst foundation surface at the bottom of the fill project, where N is a positive integer; M fixed structures are vertically buried in the surface foundation at intervals below each of the rope-tensioned structures, and the tops of the fixed structures are fixedly connected to their corresponding rope-tensioned structures, where M is a positive integer; force sensors are provided on the rope-tensioned structure sections between adjacent fixed structures, and the signal output end of the force sensor is connected to the signal input end of an alarm module.

[0004] From the above, it can be seen that the case has the characteristics of low cost, high durability, easy installation, low construction technical requirements, easy operation and management, accurate positioning of karst collapse, environmental protection and conducive to promotion. However, the case still has the following shortcomings: When monitoring karst roadbed, the existing technology usually conducts continuous monitoring at fixed points. When the monitoring points need to be replaced, the operation is more complicated and has certain limitations in use.

[0005] Therefore, a karst roadbed monitoring device is proposed to address the above problems. Utility Model Content

[0006] In order to make up for the shortcomings of the existing technology, the problem of complicated operation when replacing the monitoring points, the utility model proposes a karst roadbed monitoring device.

[0007] The technical solution adopted by the utility model to solve its technical problems is: the karst roadbed monitoring device described in the utility model includes a base and a movable adjustment device; the movable adjustment device is installed with a mounting seat, a servo motor is fixedly installed on the top of the mounting seat, a gear is fixedly installed on the output end of the servo motor, one side of the gear is transmission-connected with a rack, and a fixing rod is fixedly installed on the bottom of the rack.

[0008] Preferably, the base is installed with two supporting legs, the tops of the two supporting legs are fixedly installed with fixing rods, and the tops of the fixing rods are fixedly installed with two sliding rods.

[0009] Preferably, two sliding blocks are fixedly mounted on the tops of the two sliding bars respectively, and mounting seats are fixedly mounted on the tops of the four sliding blocks.

[0010] Preferably, a connecting rod is fixedly installed on the top of the mounting seat, a connecting block is hinged on one side of the connecting rod, a hydraulic cylinder is hinged on one side of the connecting block, a piston rod is movably installed on the output end of the hydraulic cylinder, and one end of the piston rod is hinged to the connecting rod.

[0011] Preferably, a stepper motor is fixedly mounted on the bottom of the connecting block, and a movable arm is fixedly mounted on the output end of the stepper motor.

[0012] Preferably, a ground penetrating radar is movably installed at the bottom of the movable arm.

[0013] The utility model is beneficial in that:

[0014] The utility model adopts the structural design of the movable adjustment device, drives the servo motor to make the gear and the rack cooperate with each other when working, drives the mounting seat to perform corresponding horizontal displacement, and adjusts the detection area of the ground penetrating radar. When the detection area of the ground penetrating radar is too high from the roadbed, drives the hydraulic cylinder to make the piston rod at the output end to extend and retract, and generates linkage to the connecting block during the movement, so that the connecting block performs circular movement with the hinge of the connecting rod as the axis, and the height of the ground penetrating radar is adaptively adjusted, realizing the function of active monitoring, solving the problem of complicated operation when the monitoring point is replaced, and improving adaptability in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is an exploded schematic diagram of the overall structure of the utility model;

[0018] Figure 3 For this utility model Figure 2 A magnified schematic diagram of the structure;

[0019] Figure 4 This is an exploded schematic diagram of the structure of the movable adjustment device of the utility model;

[0020] Figure 5 For this utility model Figure 4 A magnified schematic diagram of the structure at point B in the middle.

[0021] In the figure: 1. Base; 2. Movable adjustment device; 11. Support leg; 12. Fixed rod; 21. Mounting seat; 22. Servo motor; 23. Gear; 24. Rack; 25. Slider; 26. Sliding rod; 27. Connecting rod; 28. Connecting block; 29. Hydraulic cylinder; 31. Piston rod; 32. Stepper motor; 33. Movable arm; 34. Ground penetrating radar. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-Figure 5 As shown, the karst roadbed monitoring device includes a base 1 and a movable adjustment device 2; the movable adjustment device 2 is installed with a mounting base 21, a servo motor 22 is fixedly installed on the top of the mounting base 21, a gear 23 is fixedly installed on the output end of the servo motor 22, one side of the gear 23 is transmission-connected to a rack 24, and a fixing rod 12 is fixedly installed on the bottom of the rack 24;

[0024] During operation, the servo motor 22 provides power, and the gear 23 transmits the power to the rack 24 . The cooperation between the gears facilitates the corresponding displacement of the mounting seat 21 on the fixing rod 12 .

[0025] Furthermore, the base 1 is equipped with two supporting legs 11, the tops of the two supporting legs 11 are fixedly equipped with fixing rods 12, and the tops of the fixing rods 12 are fixedly equipped with two sliding rods 26;

[0026] During operation, the installation of the support legs 11 is helpful to ensure the support of the whole, so that the whole has sufficient stability during operation.

[0027] Furthermore, two sliders 25 are fixedly mounted on the top of the two slide bars 26, and mounting seats 21 are fixedly mounted on the tops of the four sliders 25.

[0028] During operation, when the mounting base 21 moves, in order to prevent shaking or instability, the movement of the mounting base 21 is limited by the cooperation of the slider 25 and the slide rod 26 so that the mounting base 21 always keeps moving horizontally.

[0029] Furthermore, a connecting rod 27 is fixedly mounted on the top of the mounting base 21, a connecting block 28 is hingedly connected to one side of the connecting rod 27, a hydraulic cylinder 29 is hingedly connected to one side of the connecting block 28, a piston rod 31 is movably mounted on the output end of the hydraulic cylinder 29, and one end of the piston rod 31 is hingedly connected to the connecting rod 27;

[0030] During operation, when the hydraulic cylinder 29 drives the piston rod 31 to perform telescopic movement, the mutual hinged cooperation facilitates the connection block 28 to perform circular movement with the hinge of the connection rod 27 as the axis.

[0031] Furthermore, a stepper motor 32 is fixedly mounted on the bottom of the connecting block 28, and a movable arm 33 is fixedly mounted on the output end of the stepper motor 32;

[0032] During operation, when the position of the ground penetrating radar 34 needs to be adjusted to the grid line, the stepping motor 32 is driven to rotate the movable arm 33 so that the position of the ground penetrating radar 34 is changed accordingly.

[0033] Furthermore, a ground penetrating radar 34 is movably mounted on the bottom of the movable arm 33;

[0034] When working, the ground penetrating radar 34 mostly uses an antenna to emit high-frequency pulse electromagnetic waves to the detection target for detection. Usually, the detection target depth satisfies the far-field condition and can be approximately regarded as propagating in the form of a plane wave. The polarization of the plane wave refers to the change characteristics of the field vector direction at a given point in space over time.

[0035] Working principle: Ground penetrating radar 34 uses high-frequency electromagnetic waves for underground detection. When working, the transmitting antenna transmits high-frequency electromagnetic waves to the underground. When these electromagnetic waves propagate underground, they will be reflected when they encounter an interface with electrical differences. The receiving antenna is responsible for receiving these electromagnetic waves reflected back to the ground. The received reflected electromagnetic wave signals are converted into digital signals after sampling and analog-to-digital conversion. These digital signals are then processed and displayed to form an image of the distribution of underground media. By analyzing these images, the spatial position, structure, morphology and burial depth of the underground media can be inferred. When the detection area needs to be changed, the gear 23 is rotated by driving the servo motor 22. When the gear 23 is working, it cooperates with the rack 24 to convert the rotational motion of the gear 23 into its linear motion, thereby driving the mounting base 21 to perform corresponding horizontal displacement, and adjusting the detection area of the ground penetrating radar 34. When the detection area of the ground penetrating radar 34 is too high from the roadbed, the hydraulic cylinder 29 is driven to make the piston rod 31 at the output end to retract and retract, and during the movement, the connecting block 28 is linked to make the connecting block 28 perform circular movement with the hinge of the connecting rod 27 as the axis, so as to adaptively adjust the height of the ground penetrating radar 34. At the same time, the stepping motor 32 can be driven to rotate the movable arm 33, and the position of the ground penetrating radar 34 can be further adjusted during the rotation.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. Karst roadbed monitoring device, characterized by: The invention comprises a base (1) and a movable adjustment device (2); the movable adjustment device (2) is installed with a mounting seat (21); a servo motor (22) is fixedly installed on the top of the mounting seat (21); a gear (23) is fixedly installed on the output end of the servo motor (22); a rack (24) is transmission-connected to one side of the gear (23); and a fixing rod (12) is fixedly installed on the bottom of the rack (24).

2. The karst roadbed monitoring device according to claim 1, characterized in that: The base (1) is installed with two supporting legs (11), the tops of the two supporting legs (11) are fixedly installed with fixing rods (12), and the tops of the fixing rods (12) are fixedly installed with two sliding rods (26).

3. The karst roadbed monitoring device according to claim 2, characterized in that: Two sliders (25) are fixedly mounted on the tops of the two slide bars (26), and mounting seats (21) are fixedly mounted on the tops of the four sliders (25).

4. The karst roadbed monitoring device according to claim 3, characterized in that: A connecting rod (27) is fixedly mounted on the top of the mounting seat (21), a connecting block (28) is hinged on one side of the connecting rod (27), a hydraulic cylinder (29) is hinged on one side of the connecting block (28), a piston rod (31) is movably mounted on the output end of the hydraulic cylinder (29), and one end of the piston rod (31) is hinged to the connecting rod (27).

5. The karst roadbed monitoring device according to claim 4, characterized in that: A stepping motor (32) is fixedly mounted on the bottom of the connecting block (28), and a movable arm (33) is fixedly mounted on the output end of the stepping motor (32).

6. The karst roadbed monitoring device according to claim 5, characterized in that: A ground penetrating radar (34) is movably mounted on the bottom of the movable arm (33).

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