Double-frequency ground penetrating radar conversion device

Abstract

The utility model discloses a dual-frequency ground penetrating radar conversion device, which belongs to the technical field of radar detection and comprises a frame body, a first radar, a second radar, a fixing system, a first motor, a second motor and a lifting device, the first radar and the second radar are arranged on the lifting device, the fixing system is arranged on the inner side of the bottom of the frame body and used for fixing the radar needing to be used, and the first motor is arranged on the frame body. The lifting device is arranged on the inner side of the middle of the frame body and used for lifting a radar needing to be used, the first motor is arranged on the outer side of the bottom of the front portion of the frame body and used for driving the lifting device, and the second motor comprises a motor and a fixing frame, is arranged on the outer side of the middle of the front portion of the frame body through four bolts and used for driving the fixing system. Free combination of any two radar antennas is realized, the flexibility during detection is improved, and various working requirements are met.

Description

Technical Field

[0001] This utility model relates to the field of ground penetrating radar detection technology, specifically a dual-frequency ground penetrating radar conversion device. Background Technology

[0002] In recent years, with the development of road construction, the length and traffic volume of roads in my country have been increasing, and people have begun to pay more attention to road safety. Ground-penetrating radar (GPR), as a non-destructive testing method for road defects, is widely used in my country's road inspection field. However, when using GPR for inspection, most existing GPR systems only have single-frequency antennas, which limits the effectiveness of road inspection. High-frequency antennas (such as 800MHz) have high resolution but shallow detection depth, making them suitable for detecting fine structures. Conversely, low-frequency antennas (such as 400MHz or 200MHz) have lower resolution but deeper detection depth, making them suitable for large-area or deep-level detection. The selection of these antenna frequencies is usually adjusted according to specific application requirements and geological conditions to achieve the best detection effect.

[0003] When using a single-frequency ground-penetrating radar (GPR) antenna for ground detection, it is difficult to achieve both high accuracy and large detection depth simultaneously. Therefore, it is often necessary to use two different frequency GPR antennas for separate detections, requiring operators to frequently switch equipment. This not only consumes time but also increases the physical burden on staff. This method has significant shortcomings in terms of efficiency and operation.

[0004] Therefore, this invention provides a dual-frequency ground-penetrating radar conversion device to address the challenges posed by traditional equipment. Utility Model Content

[0005] To address the aforementioned problems, this invention proposes a dual-frequency ground-penetrating radar conversion device, which solves the problem of increased workload for testing personnel when selecting two different frequency ground-penetrating radar antennas for separate testing.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A dual-frequency ground-penetrating radar conversion device includes a frame, a first radar, a second radar, a fixing system, a first motor, a second motor, and a lifting device. The fixing system is located on the inner side of the bottom of the frame and is used to fix the first radar or the second radar.

[0008] The lifting device is located on the inner side of the middle part of the frame, and the first radar and the second radar are mounted on the lifting device.

[0009] The second motor drives the lifting device to move up and down;

[0010] The first motor drives the fixing system to expand or contract.

[0011] The fixed system includes:

[0012] A radar limiting device is installed on the inner side of the bottom of the frame;

[0013] The first gear and the second gear are installed on the radar limiting device;

[0014] A locking device installed on the frame and engaged with the first gear for locking.

[0015] The fixing system is located on the inner side of the bottom of the frame and is used to fix the radar to be used. The fixing system includes: a radar limiting device, a first gear, a locking device, and a second gear. The radar limiting device is located on the lower inner side of the housing. The first gear is located in the middle front of the radar limiting device and is installed in the housing of the fixing gear. The locking device is located in the middle front of the radar limiting device. The second gear is located in the middle rear of the radar limiting device and is installed in the housing of the fixing gear.

[0016] The radar limiting device includes:

[0017] First limiting plate and second limiting plate;

[0018] A first gear sliding mechanism and a second gear sliding mechanism connect the first limiting plate and the second limiting plate;

[0019] The first gear engages with the first gear sliding mechanism, and the second gear engages with the second gear sliding mechanism.

[0020] The first gear sliding mechanism includes:

[0021] First sliding guide rail and second sliding guide rail;

[0022] A first sliding toothed plate is installed on the first sliding guide rail;

[0023] The second sliding toothed plate is installed on the second sliding guide rail;

[0024] The first sliding tooth plate and the second sliding tooth plate are installed on both sides of the first gear;

[0025] The second gear sliding mechanism includes:

[0026] The third and fourth sliding guide rails;

[0027] A third sliding toothed plate installed on the third sliding guide rail;

[0028] The fourth sliding toothed plate is installed on the fourth sliding guide rail;

[0029] The third and fourth sliding tooth plates are mounted on both sides of the second gear.

[0030] The first sliding toothed plate is fixed to the second limiting plate, and the second sliding toothed plate is fixed to the first limiting plate;

[0031] The third sliding toothed plate is fixed to the second limiting plate, and the fourth sliding toothed plate is fixed to the first limiting plate.

[0032] The radar limiting device includes: a right limiting plate, a sliding guide rail, a sliding toothed plate, a left limiting plate, and a fixed gear housing. The sliding guide rail has two pairs of four rails, which are fixedly installed at the front and rear ends of the bottom of the frame. The sliding toothed plate has two pairs of four rails, each with an internal groove, and is fixedly installed on the sliding guide rail. The front and rear teeth mesh with the first gear and the second gear, respectively. The right limiting plate is fixed to the lower pair of sliding toothed plates by two pairs of four bolts, and the left limiting plate is fixed to the upper pair of sliding toothed plates by two pairs of four bolts. The fixed gear housing has two housings, which are fixedly installed at the front and rear of the bottom of the frame.

[0033] The locking device includes:

[0034] Cylinders mounted on the frame;

[0035] A gear locking mechanism is installed on the cylinder and locked in place with the first gear.

[0036] The locking device includes: a limiting tooth plate, a limiting rod, a connecting rod, a cylinder, and a cylinder bracket. There are two limiting rods, which are horizontally and vertically fixedly installed on the housing of the fixed gear. There are two limiting tooth plates, each with two upper and lower sliding grooves that pass through the limiting rods and mesh with the first gear in the left and right directions. The bottom of the connecting rod is connected to the top of each limiting tooth plate via a rotating shaft, and the top is connected to the cylinder via a rotating shaft. The cylinder is fixedly installed on the cylinder bracket by bolts, and the cylinder bracket is fixedly installed on the front end of the bottom of the frame by bolts.

[0037] The lifting device includes:

[0038] A first gear shaft and a second gear shaft are mounted vertically on the frame.

[0039] Both the first gear shaft and the second gear shaft have gear discs and are connected in the vertical direction by a transmission chain.

[0040] The transmission chain is rotatably connected to two radar mounting brackets, and the first radar and the second radar are respectively mounted on the two radar mounting brackets.

[0041] The frequency of the first radar is 350–450 MHz; the frequency of the second radar is 750–850 MHz.

[0042] The second motor drives the first gear shaft or the second gear shaft.

[0043] The 350-450MHz and 750-850MHz radars are mounted on a lifting device, which is located on the inner side of the frame and is used to raise and lower the radars to be used.

[0044] The lifting device includes a first gear shaft, a second gear shaft, a transmission chain, and a radar mounting bracket. The front end of the first gear shaft is mounted in the mounting bracket of the second motor, and the rear end is mounted on the frame. Two gears are provided at the front and rear of the first gear shaft. The second gear shaft is mounted on the frame, with two gears provided at the front and rear of the second gear shaft. The transmission chain has two identical chains that mesh with the front and rear ends of the first and second gear shafts, respectively. Two chain sections are shaft chains, and each chain section has a protrusion with a shaft at the protrusion. Two identical radar mounting brackets are provided and connected to the transmission chain via shafts. The radar mounting brackets are fixedly connected to the four corners of the 400MHz and 800MHz radars via four connecting rods.

[0045] Further preferably, the radar housing has grooves on both sides, with the upper part of the grooves being horizontal and the lower part sloping outward from top to bottom, and completely fitting with the right and left limiting plates in the locking device.

[0046] In a further preferred embodiment, the first gear shaft is horizontally positioned, and bearings are provided at the connection points between the first gear shaft and the fixing frame and the frame of the second motor.

[0047] More preferably, the second gear shaft is horizontally positioned, and a bearing is provided at the connection point of the second gear shaft frame.

[0048] In a further preferred embodiment, the limiting rod is arranged horizontally, and the inner wall of the limiting tooth plate is in contact with the limiting rod.

[0049] Further preferably, the connecting rod is provided with two rods, and both rods are inclined outward from top to bottom.

[0050] In a further preferred embodiment, the sliding toothed plate is arranged horizontally, and the sliding toothed plate groove fits into the sliding guide rail, and one section of the sliding toothed plate contains a baffle to prevent the sliding toothed plate from being excessively extended.

[0051] Further preferably, the frame is configured as a truss structure, which is small in size and light in weight, reducing the vibration of the overall device. In addition, all components of the radar limiting device, radar antenna, and locking device are made detachable, improving operational flexibility.

[0052] Further preferred, the radar antennas in the 400MHz and 800MHz radars can be freely replaced with two other radar antennas of any frequency, achieving flexible antenna switching.

[0053] Compared with the prior art, the beneficial effects of this utility model are:

[0054] 1. The present invention proposes a dual-frequency ground-penetrating radar conversion device, which raises and lowers the radar by rotating the lifting device to realize the conversion between the two radar antennas. It can also freely combine any two radar antennas by changing the radar antenna of the radar housing, which increases the flexibility of detection and meets a variety of working requirements.

[0055] 2. The present invention proposes a dual-frequency ground-penetrating radar conversion device, which uses a first motor to drive a first gear so that the left and right limiting plates fit into the groove of the radar antenna housing. Then, a locking device restricts the movement of the left and right limiting plates, thereby increasing the support effect on the radar antenna and preventing the radar antenna from slipping or swaying left and right. Attached Figure Description

[0056] Figure 1 This is a front structural schematic diagram of a dual-frequency ground-penetrating radar conversion device according to the present invention;

[0057] Figure 2 This is a schematic diagram of the rear structure of a dual-frequency ground-penetrating radar conversion device according to the present invention;

[0058] Figure 3 This is a schematic diagram of the radar structure of a dual-frequency ground-penetrating radar conversion device according to the present invention;

[0059] Figure 4 This is a schematic diagram of the radar limiting device and locking device of a dual-frequency ground-penetrating radar conversion device according to the present invention.

[0060] Figure 5 This is a schematic diagram of the lifting device structure of a dual-frequency ground-penetrating radar conversion device according to the present invention.

[0061] Explanation of reference numerals in the attached figures:

[0062] 1. Frame;

[0063] 2. 400MHz radar; 21. Housing; 22. Radar antenna; 23. Power supply; 24. Wireless transmission module;

[0064] 3. 800MHz radar;

[0065] 4. Fixing system; 41. Radar limiting device; 411. Right limiting plate; 412. Sliding guide rail; 413. Sliding toothed plate; 414. Left limiting plate; 415. Fixed gear housing; 42. First gear; 43. Locking device; 431. Limiting toothed plate; 432. Limiting rod; 433. Connecting rod; 434. Cylinder; 435. Cylinder bracket; 44. Second gear;

[0066] 5. First motor;

[0067] 6. Second motor;

[0068] 7. Lifting device; 71. First gear shaft; 72. Second gear shaft; 73. Transmission chain; 74. Radar mounting bracket. Detailed Implementation

[0069] Next, the technical solutions in the embodiments will be described in detail and clearly with reference to the accompanying drawings in this utility model specification. In the drawings, the same components will be marked with the same reference numerals for ease of understanding. It should be particularly noted that in the following description, "front," "rear," "left," "right," "up," and "down" refer to the corresponding directions in the drawings, while "bottom surface" and "top surface," "inner" and "outer" indicate directions facing or away from the geometric center of a specific component.

[0070] like Figure 1 and Figure 2 As shown, a dual-frequency ground-penetrating radar conversion device includes a frame 1, a 400MHz radar 2, an 800MHz radar 3, a fixing system 4, a first motor 5, a second motor 6, and a lifting device 7. The 400MHz radar 2 and the 800MHz radar 3 are mounted on the lifting device 7. The fixing system 4 is located on the inner bottom of the frame 1 for fixing the radar to be used. The lifting device 7 is located on the inner middle part of the frame 1 for raising and lowering the radar to be used. The first motor 5 is located on the outer side of the bottom front of the frame 1 for driving the lifting device. The second motor 6 includes a motor and a fixing frame, and is mounted on the outer side of the middle front of the frame 1 by four bolts for driving the fixing system.

[0071] like Figure 3 As shown, the 400MHz radar 2 and the 800MHz radar 3 include: a housing 21, a radar antenna 22, a power supply 23, and a wireless transmission module 24. The radar antenna 22 is located on the lower inner side of the housing 21, the power supply 23 is located on the upper left side of the housing 21, and the wireless transmission module 24 is located on the upper right side of the housing 21.

[0072] like Figure 4 and Figure 5As shown, the fixing system 4 includes: a radar limiting device 41, a first gear 42, a locking device 43, and a second gear 44. The radar limiting device 41 is located on the lower inner side of the housing 21. The first gear 42 is located in the middle front of the radar limiting device 41 and is installed in the fixing gear housing 415. The locking device 43 is located in the middle front of the radar limiting device 41. The second gear 44 is located in the middle rear of the radar limiting device 41 and is installed in the fixing gear housing 415.

[0073] The radar limiting device 41 includes: a right limiting plate 411, a sliding guide rail 412, a sliding toothed plate 413, a left limiting plate 414, and a fixed gear housing 415. The sliding guide rail 412 has two pairs of four rails, which are fixedly installed at the front and rear ends of the bottom of the frame 1. The sliding toothed plate 413 has two pairs of four rails, which have internal grooves and are installed on the sliding guide rail 412. The front and rear of the toothed plate 413 mesh with the first gear 42 and the second gear 44, respectively. The right limiting plate 411 is fixed to the lower pair of sliding toothed plates 413 by two pairs of four bolts. The left limiting plate 414 is fixed to the upper pair of sliding toothed plates 413 by two pairs of four bolts. The fixed gear housing 415 has two pieces and is fixedly installed at the front and rear ends of the bottom of the frame 1.

[0074] The locking device 43 includes: a limiting tooth plate 431, a limiting rod 432, a connecting rod 433, a cylinder 434, and a cylinder bracket 435. There are two limiting rods 432, which are fixedly installed horizontally and vertically on the housing 415 of the fixed gear. There are two limiting tooth plates 431, each of which has two upper and lower sliding grooves that pass through the limiting rods 432 and mesh with the first gear 42 from left to right. The bottom of the connecting rod 433 is connected to the top of each limiting tooth plate 431 through a rotating shaft, and the top is connected to the cylinder 434 through a rotating shaft. The cylinder 434 is fixedly installed on the cylinder bracket (435) by bolts, and the cylinder bracket (435) is fixedly installed on the bottom front end of the frame 1 by bolts.

[0075] like Figure 5 As shown, the lifting device 7 includes a first gear shaft 71, a second gear shaft 72, a transmission chain 73, and a radar mounting bracket 74. The front end of the first gear shaft 71 is located in the mounting bracket of the second motor 6, and the rear end is located on the frame 1. Two gears are provided at the front and rear ends respectively. The second gear shaft 72 is located on the frame 1, and two gears are provided at the front and rear ends respectively. The transmission chain 73 has two identical chains, which mesh with the front and rear ends of the first gear shaft 71 and the second gear shaft 72 respectively. Two of the chain sections are shaft chains, and each chain section has a protrusion with a shaft at the protrusion. Two identical radar mounting brackets 74 are provided, which are connected to the transmission chain 73 through shafts. The radar mounting bracket 74 is fixedly connected to the four corners of the 400MHz radar 2 and the 800MHz radar 3 through four connecting rods.

[0076] This utility model provides an improved radar antenna horizontal adjustment device, the working principle of which is as follows:

[0077] First, before use, the frame 1 of the device is fixed to the radar vehicle frame with bottom bolts, then the cylinder is connected to the external pneumatic control system, and then the required radar antenna is installed and fixed in the box 21.

[0078] Second, by controlling the extension of the piston rod of the cylinder 434, since the connecting rods 433 are all inclined outward from top to bottom, when the piston rod of the cylinder 434 extends, it pushes the limiting tooth plates 431 to expand through the connecting rods 433. The limiting tooth plates 431 slide along the limiting rods 432 to expand, breaking the meshing between the limiting tooth plates 431 and the first gear 42, so that the first gear 42 can rotate.

[0079] Third, by controlling the first motor 5 to drive the first gear 42 to rotate counterclockwise, the sliding tooth plate 413 opens horizontally outward along the sliding guide rail 412;

[0080] Fourth, by controlling the second motor 6 to drive the first gear shaft 71 to rotate, the 400MHz radar 2 and the 800MHz radar 3 can be switched.

[0081] Fifth, by controlling the first motor 5 to drive the first gear 42 to rotate clockwise, the sliding tooth plate 413 slides horizontally inward along the sliding guide rail 412 until it is inserted into the grooves on both sides of the radar housing 21, thereby fixing the radar.

[0082] Sixth, by controlling the retraction of the piston rod of cylinder 434, since the connecting rods 433 are all inclined outward from top to bottom, when the piston rod of cylinder 434 retracts, the limiting tooth plates 431 retract through the connecting rods 433 to mesh with the first gear 42, thereby restricting the rotation of the first gear 42.

[0083] The foregoing descriptions represent only some preferred embodiments of the present invention and are not intended to limit it. Within the overall framework of the present invention, those skilled in the art have the right to make appropriate adjustments to the technical solutions mentioned in the foregoing embodiments. However, all other embodiments formed without inventive effort are protected by the present invention. Any equivalent changes made based on the structure, shape, and principle disclosed in this application should be included within the protection scope of the present invention.

Claims

1. A dual-frequency ground-penetrating radar conversion device, comprising a frame (1), a first radar (2), a second radar (3), a fixing system (4), a first motor (5), a second motor (6), and a lifting device (7), characterized in that, The fixing system (4) is installed on the inner side of the bottom of the frame (1) and is used to fix the first radar (2) or the second radar (3). The lifting device (7) is located on the inner side of the middle part of the frame (1), and the first radar (2) and the second radar (3) are installed on the lifting device (7); The second motor (6) drives the lifting device (7) to move up and down; The first motor (5) drives the fixing system (4) to unfold or retract.

2. The dual-frequency ground-penetrating radar conversion device according to claim 1, characterized in that, The fixed system (4) includes: Radar limiting device (41) is installed on the inner side of the bottom of the frame (1). The first gear (42) and the second gear (44) are installed on the radar limiting device (41). A locking device (43) is installed on the frame (1) and engages with the first gear (42) for locking.

3. The dual-frequency ground-penetrating radar conversion device according to claim 2, characterized in that, The radar limiting device (41) includes: First limiting plate (411) and second limiting plate (414); A first gear sliding mechanism and a second gear sliding mechanism connect the first limiting plate (411) and the second limiting plate (414); The first gear (42) is engaged with the first gear sliding mechanism, and the second gear (44) is engaged with the second gear sliding mechanism.

4. The dual-frequency ground-penetrating radar conversion device according to claim 3, characterized in that, The first gear sliding mechanism includes: First sliding guide rail and second sliding guide rail; A first sliding toothed plate is installed on the first sliding guide rail; The second sliding toothed plate is installed on the second sliding guide rail; The first sliding tooth plate and the second sliding tooth plate are installed on both sides of the first gear (42); The second gear sliding mechanism includes: The third and fourth sliding guide rails; A third sliding toothed plate installed on the third sliding guide rail; The fourth sliding toothed plate is installed on the fourth sliding guide rail; The third and fourth sliding tooth plates are mounted on both sides of the second gear (44).

5. The dual-frequency ground-penetrating radar conversion device according to claim 4, characterized in that, The first sliding toothed plate is fixed to the second limiting plate (414), and the second sliding toothed plate is fixed to the first limiting plate (411); The third sliding toothed plate is fixed to the second limiting plate (414), and the fourth sliding toothed plate is fixed to the first limiting plate (411).

6. The dual-frequency ground-penetrating radar conversion device according to claim 2, characterized in that, The locking device (43) includes: Cylinder (434) installed on the frame (1); A gear locking mechanism is installed on the cylinder (434) and locked in engagement with the first gear (42).

7. The dual-frequency ground-penetrating radar conversion device according to claim 2, characterized in that, The lifting device (7) includes: A first gear shaft (71) and a second gear shaft (72) are installed vertically on the frame (1). The first gear shaft (71) and the second gear shaft (72) both have gear discs and are connected in the vertical direction by a transmission chain (73).

8. The dual-frequency ground-penetrating radar conversion device according to claim 7, characterized in that, The transmission chain (73) is rotatably connected to two radar mounting brackets (74), and the first radar (2) and the second radar (3) are respectively mounted on the two radar mounting brackets (74).

9. The dual-frequency ground-penetrating radar conversion device according to claim 1, characterized in that, The frequency of the first radar (2) is 350~450MHz; The frequency of the second radar (3) is 750~850MHz.

10. The dual-frequency ground-penetrating radar conversion device according to claim 7, characterized in that, The second motor (6) drives the first gear shaft (71) or the second gear shaft (72).

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