CN115291208A - Geological radar vehicle-mounted towing device for exploring dyke hidden danger and using method - Google Patents
Geological radar vehicle-mounted towing device for exploring dyke hidden danger and using method Download PDFInfo
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- CN115291208A CN115291208A CN202210454073.2A CN202210454073A CN115291208A CN 115291208 A CN115291208 A CN 115291208A CN 202210454073 A CN202210454073 A CN 202210454073A CN 115291208 A CN115291208 A CN 115291208A
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- 229920001971 elastomer Polymers 0.000 claims description 27
- 239000000806 elastomer Substances 0.000 claims description 27
- 238000004891 communication Methods 0.000 claims description 17
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 10
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/885—Radar or analogous systems specially adapted for specific applications for ground probing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/36—Means for anti-jamming, e.g. ECCM, i.e. electronic counter-counter measures
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- Radar, Positioning & Navigation (AREA)
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Abstract
The invention discloses a geological radar vehicle-mounted towing device for exploring dyke hidden danger and a using method thereof. The device and the method can adapt to the complex terrain of the dike and the harsh inspection environment, ensure that the geological radar antenna is in contact coupling with the dike surface when in use, realize the simultaneous dragging of the geological radar antenna at the top of the dike and the dike slope and improve the detection efficiency; the internal hidden danger of the embankment can be checked in a multi-level manner by adjusting the installation direction, the number, the model and the polarization direction of the geological radar antenna; the invention has no special requirements on the operation vehicle, has better universality and low investment cost for modification.
Description
Technical Field
The invention belongs to the field of engineering hidden danger detection, and particularly relates to a geological radar vehicle-mounted towing device for probing embankment hidden dangers and a using method thereof.
Background
Geological radar is used as a nondestructive and efficient detection technology and is gradually used for detecting hidden dangers of civil and hydraulic engineering buildings. At present, most of formed instruments and equipment adopt a manual dragging mode to carry out field operation, and the efficiency is not high enough when the hydraulic buildings with long lines and wide surfaces such as dikes are faced; moreover, the dykes have various complex environments, the patrol is intensive under extreme conditions such as flood season and the like, and the safety protection capability of instruments and equipment and operators is further enhanced.
At present, in the field of highway hidden danger detection, geological radar is modified and erected on a vehicle for detection. The method comprises the following specific modes: (1) mounting a geological radar antenna on a vehicle chassis; (2) the geological radar antenna is made into a trailer and dragged at the tail part of the vehicle; (3) and erecting the geological radar antenna on a vehicle tail support. The highway engineering road condition is better, and the operating period is abundant, all has no special requirement to detection equipment and operation vehicle, and above mode has obtained the effect of preferred on highway hidden danger is surveyed, has promoted work efficiency.
However, for the embankment engineering, the complexity of the engineering and the particularity of the working scene of the embankment engineering put high requirements on the vehicle-mounted operation of the geological radar, and the existing refitting devices in the relevant fields such as roads are not suitable for embankment exploration. Mainly characterized in the following aspects: (1) the embankment terrain is fluctuated and uneven. The ground penetrating radar is simply and rigidly hung on the chassis or the bracket, so that the ground penetrating radar is easy to collide with an instrument and cause damage; simply through the trailer mount in rear of a vehicle portion, it is not close to make the instrument jolt to cause and the embankment face laminating easily, is difficult to guarantee the detection signal quality. (2) The period such as flood season is an intensive period of the embankment patrol, rainfall, flood and the like are often accompanied, and the detection working environment is harsh. The instrument is simply mounted externally without protection such as water resistance and the like, and the instrument is easy to damage. (3) The dike is used as a water retaining building, the water content in the dike is large, a multi-band low-frequency antenna needs to be selected for detection, and the low-frequency antenna is large in size and weight, so that the difficulty in modification is increased. (4) The embankment has different landforms and widths, different vehicle types have different adaptability on the embankment, and the conventional towing type modification of the geological radar has no universality and cannot be installed on different operation vehicles quickly.
Disclosure of Invention
The invention aims to provide a geological radar vehicle-mounted towing device for exploring dyke hidden danger and a using method thereof.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
a geological radar vehicle-mounted towing device for exploring dyke hidden danger comprises a towing cabin, towing cabin connecting pieces, a fixing support, a positioning device, a counterweight and a communication device;
the towing cabin comprises a base and a fixing device;
the base main body is a flat plate, one end of the flat plate is in a chamfer angle tilting type, and the base is made of a wear-resistant material;
the fixing device (2) consists of a rectangular shell and a clamp, the rectangular shell is fixed at the flat plate main body of the base (1), the rectangular shell is not provided with an upper bottom plate and a lower bottom plate, a radar antenna is accommodated in the rectangular shell and filled with an elastomer material, and the radar antenna is fixed on the upper surface of the base (1) in the rectangular shell through the clamp; the upper part of the rectangular shell is closed by a flat plate (6), and three connector joints (4-1) are fixed on at least one panel of the rectangular shell;
the positioning device (8) is fixed on the flat plate (6), and the counterweight (7) is fixed on one end, close to the chamfer, of the flat plate (6);
at least one group of towing cabin connecting pieces is arranged; each group of towing cabin connecting pieces consists of 1 rigid rod and 2 elastic connecting pieces; one end of each towing cabin connecting piece is correspondingly connected with three connecting piece joints of one panel of the rectangular shell, and the other end of each towing cabin connecting piece is connected with the fixed support;
the fixed bracket is fixed at the tail of the working vehicle;
the communication device is used for transmitting information collected by the geological radar to the vehicle-mounted data processing device, and a cable interface of the communication device is arranged on the rectangular shell panel corresponding to the tilting end of the base and the panel opposite to the rectangular shell panel.
As a preferred embodiment, the tilting height of the base is more than or equal to 20cm, the chamfer radian is 90 degrees, and the chamfer radius is more than or equal to 20cm; the base is made of polyethylene and has a bottom plate with a thicknessd≤18.75/fAnd isd≥0.01m，fThe frequency of the radar antenna in the towing tank, in MHz,dthe unit is m; if a plurality of radar antennas are placed in one towing tank, the thickness of the bottom plate is determined according to the radar antenna with the highest frequency. The polyethylene plate is wear-resistant, has small friction coefficient, has small interference to radar waves, and has both wear resistance and signal quality due to limitation of material combination thickness.
As a preferred embodiment, the elastomer material comprises a granular elastomer material and a flaky elastomer material, wherein the granular elastomer material is filled in the lower layer of the interior of the rectangular shell, and the flaky elastomer material is filled in the upper layer;
when the flat plate is installed, the radar antenna is placed in the rectangular shell, then the granular elastomer material is filled to be full, finally the flaky elastomer material is filled, the filling height is 3-5 cm higher than the upper edge of the rectangular shell, and finally the flat plate is compacted when the flat plate is installed.
As a preferred embodiment, three connector joints are fixed on three panels of the rectangular shell, the rectangular shell is close to one end of the chamfer, and the three connector joints are fixed on the base chamfer;
the towing cabin is provided with a plurality of towing cabins, geological radar antennas with different frequencies are arranged in each towing cabin, and the different geological radar antennas can rotate by a certain angle in the receiving and transmitting directions so as to detect hidden dangers from different polarization directions. The geological radar antenna frequency is preferably selected from two or three of 400MHz, 250MHz and 100 MHz.
The towing cabins are connected through towing cabin connecting pieces.
As a preferred embodiment, the fixed bracket comprises a first connecting rod, a second connecting rod and at least one movable bracket;
one end of the first connecting rod is fixed at the tail of the working vehicle, and the other end of the first connecting rod is provided with a clamp; the second connecting rod penetrates through the hoop of the first connecting rod and is fixed; one end of the movable support is provided with a hoop, the movable support is movably connected with the second connecting rod, and the other end of the movable support is provided with three connecting piece joints for connecting with connecting pieces of the towing cabin.
As a preferred embodiment, the clamp comprises a fixed screw rod, a movable clamping plate and a limit nut;
the fixed screw rod is fixed on the inner surface of the rectangular shell and penetrates through the movable clamping plate, so that the movable clamping plate can slide on the fixed screw rod; the limiting nut is arranged on the fixed screw rod and used for fixing the movable clamping plate; two pairs of four fixed screw rods are arranged in one towing cabin, and the movable clamping plates and the limiting nuts are determined according to the number of the radar antennas;
the fixed screw rod and the movable clamping plate are made of carbon fibers or fiber-added nylon.
In a preferred embodiment, the connecting piece joint is in pin connection with the rigid rod and the elastic connecting piece; the three connector joints are axially symmetrically distributed, and the rigid rod is connected with the connector joint in the middle;
the elastic connecting piece is preferably a compression spring.
As a preferred embodiment, the counterweight member is formed by filling a counterweight body in a hollow hexahedral shell, the section of the hollow hexahedral shell is a right trapezoid, the right-angle side of the right trapezoid is parallel to the rectangular shell, the top of the hollow hexahedral shell is provided with a counterweight body inlet, and the bottom of the side of the hollow hexahedral shell is provided with a counterweight body outlet; the weight body is preferably dry fine sand, and the total weight of the weight body is 5-10kg. The center of mass of the whole device is adjusted by controlling the height of the filled counterweight body, so that the front tilting during towing is prevented.
As a preferred embodiment, the rectangular casing is made of a waterproof material, preferably a carbon fiber plate or an organic glass plate; the rectangular shell is connected with the base through a nylon corner connector, the edge of the seam is sealed by hot melt adhesive, and the dustproof and waterproof grade of the structure formed by the rectangular shell and the base is not lower than IP67.
Another object of the present invention is to provide a method for using the vehicle-mounted towing apparatus for geological radar, which comprises:
s2.1, connecting the towing cabin with a fixed support at the tail of the working vehicle through a connecting device;
s2.2, driving the working vehicle to reach the embankment section to be detected;
s2.3, starting the geological radar equipment, debugging the positioning assembly and setting related parameters;
s2.4, driving on the embankment section to be detected at a speed of less than or equal to 10km/h, and paying attention to the signal acquisition quality and the working state of the towing cabin at all times in the driving process;
s2.5, turning off the geological radar equipment, stopping the operation vehicle, and withdrawing the towing cabin.
The device and the method can adapt to the complex terrain of the dike and the harsh inspection environment, ensure the contact coupling of the geological radar antenna and the dike surface, realize the dragging of the geological radar antenna on the top of the dike and the dike slope at the same time and improve the detection efficiency; the hidden danger in the dike can be checked in a multi-level manner by adjusting the installation direction, number and model of the geological radar antennas; the invention has no special requirements on the operation vehicle, has better universality and low investment cost for modification.
Drawings
Fig. 1 is a partial structure view of a towing tank.
Fig. 2 is a diagram of a state in which the radar antenna is fixed inside the towing tank.
Fig. 3 is an overall configuration view of the towing tank.
Fig. 4 is a view showing the structure of the fixing bracket.
FIG. 5 is a schematic view of the apparatus in use.
In the figure, 1 is a base, 2 is a fixing device, 3-1 is a fixed screw rod, 3-2 is a movable clamping plate, 3-3 is a limit nut, 4-1 is a connector joint, 4-2 is a rigid rod, 4-3 is an elastic connector, 5 is a serial port joint, 6 is a flat plate, 7 is a counterweight, 8 is a positioning device, 9 is a first connecting rod, 10 is a second connecting rod, 11 is a movable support, 12 is an operation vehicle, and 13 is a radar antenna.
Detailed Description
Example 1
This example specifically illustrates the structure of the device of the present invention.
The geological radar vehicle-mounted towing device for exploring the hidden danger of the dike, disclosed by the invention, comprises the following components in parts by weight as shown in figures 1 to 5: towing cabin connecting piece, fixed bolster, positioner, counterweight and communication device.
The towing cabin comprises a base 1, a fixing device 2, a flat plate 6, a positioning device 8 and a counterweight 9.
The base 1 is of a sliding plate type, one end of the base is of a chamfer tilting type, the tilting height is more than or equal to 20cm, the radian of the chamfer is 90 degrees, and the radius of the chamfer is more than or equal to 20cm. The base is made of a polyethylene plate, the thickness d of the plate is less than or equal to 18.75/f and not more than 20mm, wherein d is the thickness of the plate in m; f is the frequency of the radar antenna 13 in the towing tank in MHz.
Fixing device 2 comprises rectangle shell and anchor clamps, and the rectangle shell does not have upper and lower panel, installs on base 1, with base 1 fixed connection, and the dustproof and waterproof grade of structure of formation is not less than IP67. The rectangular shell is preferably made of a carbon fiber plate or an organic glass plate. The clamp comprises a fixed screw rod 3-1, a movable clamping plate 3-2 and a limiting nut 3-3. The fixed screw rod 3-1 is fixedly connected to the inner side of the rectangular shell panel, the movable clamping plate 3-2 penetrates through the fixed screw rod 3-1, and the position of the movable clamping plate 3-2 can be fixed by rotating the limiting nut 3-3 on the fixed screw rod. Four fixed screw rods 3-1 are arranged in each towing cabin, and a plurality of groups of movable clamping plates 3-2 and limiting nuts 3-3 can be arranged. The fixed screw rod 3-1 and the movable clamping plate 3-2 are made of carbon fiber or fiber-added nylon; the tapping of the fixed screw rod 3-1 is matched with the nut.
The radar antenna 13 is fixed on the base 1 in a rectangular shell through a clamp, and the rectangular shell is filled with elastomer materials which comprise two types of particles and sheets. The granular elastomer material is used to fill the interior of the rectangular housing and the sheet-like elastomer material is located on top of the rectangular housing. The elastomer material is low density foam or medium density sponge.
The flat plate 6 is arranged above the rectangular shell and connected with the rectangular shell through a lock catch, and the flat plate 6 presses the sheet-shaped elastomer material downwards to compress the radar antenna 13 below, so that the vibration resistance of the equipment is improved. The flat plate 6 is made of a plate with certain strength, and the upper part of the flat plate can be provided with an expansion bracket for expanding and installing other components or instruments.
The positioning device 8 is mounted on the plate 6.
The weight member 9 includes a weight compartment and a weight body. The counterweight cabin is of a hexahedral structure, the longitudinal section of the counterweight cabin is trapezoidal, an inlet is reserved at the top of the counterweight cabin, and an outlet is reserved at the bottom of the side edge of the counterweight cabin. The counterweight cabin is made of a plate with certain strength, preferably a carbon fiber, fiber-added nylon or organic glass plate; the counterweight is preferably dry fine sand. The fine sand is filled through a top inlet and taken out through a side bottom outlet. The weight compartment may be fixed above the platform 6. The total weight of the counterweight is 5 to 10kg.
Each group of the towing tank connecting pieces consists of 1 rigid rod and 2 elastic connecting pieces. The rigid rod is a straight rod, and joints at two ends are connected by pins (rotatable and immovable in position); the joints at the two ends of the elastic connecting piece are fixedly connected (the end heads are fixed and cannot rotate and move); the elastic connecting piece is a pressure spring.
Each towing cabin is provided with 4 groups of connector joints 4-1 which are respectively arranged on the front, the back, the left and the right surfaces of the towing cabin, wherein three surfaces are arranged on a panel of the rectangular shell, and one surface is arranged at the tilting end of the base 1, as shown in 2. Three connector joints 4-1 are arranged in each group, and the rigid rods are connected with the connector joints positioned in the middle of each surface; the pressure spring is connected by a pin and is connected with the connector joints which are symmetrically distributed on two sides.
The fixed bracket comprises a first connecting rod 9, a second connecting rod 10 and a movable bracket 11. One end of the first connecting rod 9 is fixed at the tail part of the operation vehicle through a bolt, and the other end of the first connecting rod is a hoop. The second connecting rod 10 passes through the collar of the first connecting rod 9 and can be fixed by this collar. One end of the movable bracket 11 is a hoop and penetrates through the second connecting rod 10; the other end is a connector joint which can be connected with a connecting piece of the towing cabin. The movable support 11 may be plural.
This connecting element adopts 1 rigid connection can guarantee to drag the effective aversion of cabin: (1) ensuring that the working vehicle effectively acts the power on the towing cabin; (2) ensuring the fixed interval of the towing cabins; (3) the two ends of the rigid connection are connected by pins, so that the towing cabin can rotate flexibly. 2 elastic connection can guarantee to put right the drag cabin gesture: (1) when the terrain fluctuates, the left side and the right side are elastically connected, so that the up-and-down shaking of the towing cabin can be reduced; (2) when turning along the dike, the left side and the right side are elastically connected, so that the left-right swinging of the towing cabin can be reduced, and the movement along the survey line is ensured.
The communication device comprises a serial port connector 5 and a communication cable.
The serial port connector 5 is divided into a male connector and a female connector, and serial port connectors are arranged on the front side and the rear side of the towing cabin and connected with the inside and the outside of the towing cabin.
The towing tanks can be connected in series. The towing cabins are structurally connected through towing cabin connecting pieces, and front and rear serial port connectors of the towing cabins are connected in series through communication cables to transmit signals.
The radar antenna 13 is arranged in the towing cabin, and the radar antenna 13 is connected with a serial port connector inside the towing cabin through a communication cable; the external serial port connector of the towing cabin is connected with the towing cabin in front through a communication cable, and the external serial port connector of the towing cabin in the forefront is connected with the data processing device through the communication cable.
Example 2
This example specifically describes the method of mounting the device and the method of operating the device of example 1.
The installation process of the device is as follows:
s1.1, fixing the geological radar antenna. Put into the pulling cabin with geological radar antenna, ensure that geological radar antenna bottom hugs closely the below base, make through the nut on the fixed screw pole and remove splint and press from both sides tight geological radar antenna. One towing cabin can be provided with 1 or more geological radar antennas, and correspondingly, a movable clamp plate and a limiting nut can be added.
S1.2 filling with elastomer material. And filling the granular elastomer into the fixing unit, and filling the flaky elastomer above the geological radar antenna, wherein the filling height of the flaky elastomer is 3-5cm higher than that of the towing cabin.
S1.3, installing a flat plate. The flat plate is connected with the fixing component through the lock catch, and the geological radar antenna is tightly pressed through the flaky elastic body.
S1.4, a counterweight part and a positioning device are installed. The counterweight cabin is arranged above the flat plate, and the counterweight body is poured into the counterweight cabin through an inlet at the top of the counterweight cabin; and installing a positioning device.
S1.5, connecting the towing cabin. And connecting the towing cabins into a whole through the towing cabin side connecting pieces according to the requirement.
S1.6, installing a fixed support. Fixing a first connecting rod at the tail part of the working vehicle through a bolt; moving the second connecting rod to a proper position and locking the second connecting rod through a hoop; moving the movable support to a proper position and locking the movable support through a hoop; the towing cabin is connected with the movable bracket through a towing connecting piece.
S1.7 is connected with a communication cable. And connecting serial port connectors of the towing cabins through communication cables, and finally accessing the geological radar host.
When in use, the geological radar antenna can realize multiple frequency bands, preferably two or more of 400MHz, 250MHz and 100 MHz. The receiving and transmitting directions of different geological radar antennas can be considered to rotate by a certain angle so as to detect hidden dangers from different polarization directions.
The operation flow of the device is as follows:
s2.1 the device is in place. The pod is placed on the work vehicle to reach the section of the embankment to be detected.
And S2.2, equipment installation. And installing the towing tank according to the step S1.
S2.3 starting the instrument. And starting the geological radar equipment, debugging the positioning assembly and setting related parameters.
S2.4 starts the work vehicle. The running speed is less than or equal to 10km/h, and the signal acquisition quality and the working state of the towing cabin are noticed at all times during the running process.
And S2.5, recovering by using a device. And (4) turning off the geological radar equipment, stopping the operation vehicle and withdrawing the towing cabin.
Example 3
The present embodiment provides a specific case of a geological radar vehicle-mounted towing installation.
The thickness of the slide plate type base 1 is 20mm, and the slide plate type base is provided with a 100MHz or 250MHz antenna and accords withd≤18.75/fRequiring; the front edge has a tilting height of 30cm, a chamfer angle radian of 90 degrees and a chamfer angle radius of 20cm. The material is Eccolock PP. Fixing device 2 is the rectangular shell of organic glass board preparation, passes through the nylon angle sign indicating number with the slide type base and is connected, and seam edge is sealed with the hot melt adhesive, and waterproof grade reaches IP67. The clamp is made of fiber-added nylon. The elastomer material is medium-density sponge, and is higher than the fixing component by about 3cm after being filled. The flat plate 6 is connected with the fixing component by adopting a lock catch. The counterweight 7 is fixed above the flat plate through a buckle, and the counterweight body is filled with fine sand, and the total weight is 5kg. A positioning device 8 is arranged above the flat plate 6. The periphery of the towing cabin is provided with a connector joint 4-1. The rigid rod 4-2 of the towing cabin connecting piece is a high-strength aluminum alloy adjustable telescopic rod; the elastic connecting piece 4-3 is a pressure spring with the wire diameter of 2 mm. The fixing bracket is made of high-strength aluminum alloy.
The two towing tanks are in a group and are respectively provided with 100MHz and 250MHz antennae, and the towing tanks and the fixed assembly 2 are connected together through towing tank connecting pieces 4-2.
The device assembly process is as follows:
(1) And fixing the geological radar antenna. 2 groups of antennas with frequencies of 100MHz and 250MHz are selected and respectively placed in the towing cabin and fixed through the fixing component.
(2) And filling the elastomer material. The inside of the fixing unit is filled with granular medium-density sponge, the upper part of the fixing unit is filled with flaky sponge, and the filling height of the sponge is about 3cm higher than that of the towing cabin in a natural state.
(3) And (5) installing the flat plate. The flat plate is connected with the fixing component through the lock catch, and the geological radar antenna is tightly pressed through the flaky elastic body.
(4) And (5) installing a counterweight. And (3) installing the balance weight cabin above the flat plate, and pouring 5kg of fine sand through an inlet at the top of the balance weight cabin.
(5) And installing a fixed support. The first connecting rod 9 is fixed at the tail of the working vehicle through a bolt; moving the second connecting rod 10 to a proper position and locking by a clamp; the movable bracket 11 is locked to a proper position; the movable support 11 is connected with the towing cabin through a towing connecting piece.
(6) And connecting the towing tank. And the groups of dragging cabins are respectively connected through the straight rod and the pressure spring. The group of the towing cabins is connected with the fixing components through the front side of the foremost towing cabin; and the other group is connected with the fixing assembly through the side surface of the foremost towing cabin.
(7) And connecting the communication cable. The serial port connectors of the towing cabins are connected through communication cables and finally connected into the geological radar host, and the geological radar host is installed on the vehicle cabin platform.
Then, the work is carried out using the onboard towing system.
(1) And starting the geological radar equipment, debugging the positioning assembly and setting related parameters.
(2) The work vehicle is turned on. The running speed is less than or equal to 10km/h, attention is paid to the signal acquisition quality and the working state of the towing cabin at all times in the running process, and the adjustment is carried out in time when the working is abnormal. The abnormity is usually the tilting of the front of the towing cabin and can be adjusted by adding a counterweight body.
(3) And (5) recovering the device. And (5) turning off the geological radar equipment, stopping the working vehicle and withdrawing the towing cabin.
Claims (10)
1. A geological radar vehicle-mounted towing device for exploring dyke hidden danger is characterized by comprising a towing cabin, towing cabin connecting pieces, a fixing support, a positioning device (8), a counterweight (7) and a communication device;
the towing cabin comprises a base (1) and a fixing device (2);
the main body of the base (1) is a flat plate, one end of the flat plate is in a chamfer angle and tilting type, and the base (1) is made of wear-resistant materials;
the fixing device (2) consists of a rectangular shell and a clamp, the rectangular shell is fixed at the flat plate main body of the base (1), the rectangular shell is not provided with an upper bottom plate and a lower bottom plate, a radar antenna (13) is accommodated in the rectangular shell and filled with an elastomer material, and the radar antenna is fixed on the upper surface of the base (1) in the rectangular shell through the clamp; the upper part of the rectangular shell is closed by a flat plate (6), and three connector joints (4-1) are fixed on at least one panel of the rectangular shell;
the positioning device (8) is fixed on the flat plate (6), and the counterweight (7) is fixed on one end, close to the chamfer, of the flat plate (6);
at least one group of towing cabin connecting pieces is arranged; each group of towing cabin connecting pieces consists of 1 rigid rod (4-2) and 2 elastic connecting pieces (4-3); one end of each towing cabin connecting piece is correspondingly connected with three connecting piece joints (4-1) of one panel of the rectangular shell, and the other end of each towing cabin connecting piece is connected with the fixed support;
the fixed bracket is fixed at the tail part of the working vehicle;
the communication device is used for transmitting information collected by the geological radar antenna to the data processing device, and a cable interface of the communication device is arranged on the rectangular shell panel corresponding to the tilting end of the base (1) and the panel opposite to the rectangular shell panel.
2. The geological radar vehicle-mounted towing device for exploring levee hidden dangers according to claim 1, characterized in that the tilting height of the base (1) is more than or equal to 20cm, the chamfer radian is 90 degrees, and the chamfer radius is more than or equal to 20cm; the base (1) is made of polyethylene and has a bottom plate with a thicknessd≤18.75/fAnd isd≥0.01m，fIs the frequency of the radar antenna in the towing tank, in MHz,dthe unit is m; if a plurality of radar antennas are placed in one towing tank, the thickness of the bottom plate is determined according to the radar antenna with the highest frequency.
3. The vehicle-mounted towing device for the geological radar for exploring levee hazards as claimed in claim 1, wherein the elastomer material comprises granular elastomer material and sheet elastomer material, the granular elastomer material is filled in the lower layer inside the rectangular shell, and the sheet elastomer material is filled in the upper layer;
when the antenna is installed, the radar antenna is placed in the rectangular shell, then the granular elastomer material is filled to be full, finally the flaky elastomer material is filled, the filling height is 3-5cm higher than the upper edge of the rectangular shell, and finally the antenna is compacted when the flat plate (6) is installed.
4. The vehicle-mounted towing device of geological radar for exploring embankment hidden danger as claimed in claim 1, characterized in that three connector joints (4-1) are fixed on three panels of the rectangular casing, the rectangular casing is near one end of the chamfer, and the three connector joints (4-1) are fixed on the chamfer of the base (1);
the number of the towing cabins is multiple, radar antennas with different frequencies can be arranged in each towing cabin, and hidden dangers are detected by the radar antennas from different polarization directions; the frequency of the radar antenna is preferably selected from two or three of 400MHz, 250MHz and 100 MHz;
the towing cabins are connected through towing cabin connecting pieces.
5. The geological radar vehicle-mounted towing installation for exploring dykes according to claim 1, characterized in that the fixed support comprises a first connecting rod (9), a second connecting rod (10) and at least one movable support (11);
one end of the first connecting rod (9) is fixed at the tail of the working vehicle, and the other end of the first connecting rod is provided with a hoop; the second connecting rod (10) penetrates through the hoop of the first connecting rod (9) and is fixed; one end of the movable support (11) is provided with a hoop, the movable support (11) is movably connected with the second connecting rod (10), and the other end of the movable support (11) is provided with three connecting piece connectors (4-1) for connecting with connecting pieces of the towing cabin.
6. The vehicle-mounted towing device of geological radar for exploring dyke hidden danger as claimed in claim 1, characterized in that the clamp comprises a fixed screw rod (3-1), a movable clamping plate (3-2) and a limit nut (3-3);
the fixed screw rod (3-1) is fixed on the inner surface of the rectangular shell, and the fixed screw rod (3-1) penetrates through the movable clamping plate (3-2) to enable the movable clamping plate (3-2) to slide on the fixed screw rod (3-1); the limiting nut (3-3) is arranged on the fixed screw rod (3-1) and is used for fixing the movable clamping plate (3-2); the number of the fixed screw rods (3-1) in one towing cabin is two, and the number of the movable clamping plates (3-2) and the number of the limiting nuts (3-3) are determined according to the number of the radar antennas;
the fixed screw rod (3-1), the movable clamping plate (3-2) and the limiting nut (3-3) are made of carbon fibers or fiber-added nylon.
7. The vehicle-mounted geological radar towing device for exploring dyke hidden troubles as claimed in claim 1, wherein the connector joint (4-1) is pin-connected with the rigid rod (4-2) and fixedly connected with the elastic connector (4-3); the three connector joints (4-1) are distributed in an axisymmetric manner, and the rigid rod (4-2) is connected with the connector joint (4-1) positioned in the middle;
the elastic connecting piece (4-3) is preferably a compression spring.
8. The vehicle-mounted geological radar towing device for exploring dyke hidden danger as claimed in claim 1, characterized in that the weight member (7) is formed by filling a weight body in a hollow hexahedral shell (with a right trapezoid cross section), the hollow hexahedral shell has a right trapezoid cross section, the right angle side of the right trapezoid is parallel to the rectangular shell, the top of the hollow hexahedral shell is provided with a weight body inlet, and the bottom of the side is provided with a weight body outlet; the weight body is preferably dry fine sand, and the total weight of the weight body is 5-10kg.
9. The geological radar vehicle-mounted towing device for exploring dyke hidden dangers as claimed in claim 1, wherein the rectangular housing is made of waterproof material, preferably carbon fiber plate or organic glass plate; rectangle shell is connected through nylon angle sign indicating number with base (1), and seam edge is sealed with the hot melt adhesive, makes the structure dustproof and waterproof grade that rectangle shell and base (1) formed not less than IP67.
10. The use method of the geological radar vehicle-mounted towing device according to any one of claims 1 to 9, characterized by comprising the following steps:
s2.1, connecting the towing cabin with a fixed support at the tail of the working vehicle through a connecting device;
s2.2, driving the working vehicle to reach the embankment section to be detected;
s2.3, starting the geological radar equipment, debugging the positioning assembly and setting related parameters;
s2.4, driving on the embankment section to be detected at a speed of less than or equal to 10km/h, and paying attention to the signal acquisition quality and the working state of the towing cabin at any moment in the driving process;
s2.5, the geological radar equipment is turned off, the operation vehicle is stopped, and the towing cabin is retracted.
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| CN202210454073.2A CN115291208B (en) | 2022-04-27 | 2022-04-27 | Geological radar vehicle-mounted dragging device for exploring embankment hidden danger and use method |
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