CN109554996A - A kind of all-purpose road cyclic loading detection machine - Google Patents
A kind of all-purpose road cyclic loading detection machine Download PDFInfo
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- CN109554996A CN109554996A CN201811414715.6A CN201811414715A CN109554996A CN 109554996 A CN109554996 A CN 109554996A CN 201811414715 A CN201811414715 A CN 201811414715A CN 109554996 A CN109554996 A CN 109554996A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/01—Devices or auxiliary means for setting-out or checking the configuration of new surfacing, e.g. templates, screed or reference line supports; Applications of apparatus for measuring, indicating, or recording the surface configuration of existing surfacing, e.g. profilographs
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Abstract
A kind of all-purpose road cyclic loading detection machine, belongs to lane detection technology field.Bionical foot pulls limb mechanism of upper and lower limb mechanism alternatively swinging by line cylinder to realize the Fast marching of complete equipment when operation, line cylinder working principle is that line cylinder is mounted among fixed bracket and executing agency by wirerope, the line roller of installation shuttle-type in the cylinder body of line cylinder, wirerope both ends on line roller are respectively wound around on the reverse wheel being horizontally mounted and vertically arranged reverse wheel and form wirerope circuit with line roller ontology, after energization, it is mounted on the intracorporal motor band moving-wire roller turn of cylinder, when motor rotates in the forward direction, line roller executes positive take-up operation, the entire length of line cylinder becomes smaller, executing agency is driven to be swung up, it is on the contrary, when motor reversely rotates, line roller executes reversed take-up operation, the entire length of line cylinder is elongated, executing agency is under the effect of gravity to lower swing, upper limb and the continuous alternating movement of lower limb can be real The Fast marching of existing complete machine.
Description
Technical Field
The invention relates to the technical field of road detection, in particular to a multifunctional road cyclic load detector.
Background
The broad scholars make a lot of researches on the detection of pavement recessive diseases, and provide a lot of detection methods, the early experience method is judged by artificial subjective on-site observation, the later development is a mechanical response detection method represented by FWD, more advanced instruments and methods are applied, such as an ultrasonic detection instrument, and the like, for example, a ground penetrating radar mentioned in patent No. 201720804169.1, the main structure of which is that a transmitting antenna and a receiving antenna are installed on a trolley, high-frequency electromagnetic waves are transmitted to the underground through the transmitting antenna, the electromagnetic waves are reflected when encountering boundary surfaces with electrical differences when propagating in underground media, and the underground space position, structure, form and burial depth are deduced according to the characteristics of the wave form, amplitude intensity, time variation and the like of the electromagnetic waves received by the receiving antenna.
Meanwhile, the existing road cyclic load detection device mainly comprises a three-phase asynchronous motor, a coupler, a connecting disc, directional wheels and a box body, wherein a load is applied through a hydraulic device, the three-phase asynchronous motor is electrified to rotate, and the 3 directional wheels are rotated through the coupler, so that the alternating load applied to different positions of a roadbed is measured, and the influence of different loads on the roadbed is found. The device has the great disadvantage that under the rotation of the three-phase asynchronous motor, 3 directional wheels can not do circular motion along a complete circle, thereby causing the instability of the whole device. Because the device does a circular motion, the required data can not be accurately measured.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a multifunctional road cyclic load detector.
The invention designs a multifunctional road circulating load detector with a bionic foot mechanism, wherein the bionic foot is alternately swung by an upper limb mechanism and a lower limb mechanism of a wire cylinder mechanism to realize the rapid advance of the whole set of equipment, the working principle of the wire cylinder is that the wire cylinder is arranged between a fixed bracket and an actuating mechanism through a steel wire rope, a shuttle-shaped wire roller is arranged in a cylinder body of the wire cylinder, wire grooves are arranged on two side conical surfaces on the wire roller and wound with the steel wire rope, one end of the steel wire rope is respectively connected with a reversing wheel which is horizontally arranged and vertically arranged, in the working process, a motor arranged in the cylinder body drives the wire roller to rotate, when the motor rotates forwards, the wire roller carries out forward wire collection operation, the whole length of the wire cylinder is reduced, the actuating mechanism is driven to swing upwards, otherwise, when the motor rotates backwards, the wire roller carries out reverse wire collection operation, the whole length of the wire cylinder is lengthened, the actuating mechanism swings downwards under the action of gravity, and the upper limbs and the lower limbs continuously and alternately act to realize the rapid advance of the whole machine.
Meanwhile, the invention also integrates the ground penetrating radar on the equipment, the ground penetrating radar detection technology is a nondestructive detection method for detecting the condition of the roadbed, the pavement and the interlayer, the radar system mainly comprises a main control part and a receiving and transmitting part, and the main control system mainly comprises a storage device, a signal processor and a display device; the transceiving system mainly comprises a pulse generator, an electromagnetic wave transmitter, a receiver, an antenna and the like.
The pulse generator mainly generates sinusoidal electromagnetic pulses, and the sinusoidal electromagnetic pulses are transmitted to the transmitting antenna after passing through the separator.
The sampling receiver mainly captures and amplifies electromagnetic wave reflected signals and transmits the signals to the processing system.
The transceiving antenna is mainly used for transmitting electromagnetic waves and receiving reflected signals.
The separator serves to separate the transmitted pulse signal from the reflected signal for identification while protecting the relevant components of the receiver from the high energy output of the transmitter.
The signal processing system mainly processes the received reflected signal, and processes and stores the data. Displaying and analyzing.
A multifunctional road cyclic load detector comprises a multifunctional platform and a bionic foot, wherein the bionic foot comprises an upper limb swing rod, a lower limb swing rod and a buffer pad, the upper limb swing rod is connected with the multifunctional platform through a rotating shaft, the upper limb swing rod and the multifunctional platform are provided with a first cylinder, the upper limb swing rod and the lower limb swing rod are connected through the rotating shaft, a second cylinder is arranged between the lower limb swing rod and the multifunctional platform, two ends of the first cylinder are provided with ear rings, the ear rings are arranged on an upper end cover and a lower end cover, the upper end cover is provided with a first reversing wheel and a second reversing wheel, the lower end cover is provided with a third reversing wheel and a fourth reversing wheel, the first reversing wheel is connected with a first conical surface of a first conical roller and a third conical surface of a second conical roller through a first warp, the fourth reversing wheel is connected with a second conical surface of the first conical roller and a fourth conical surface of the warp roller through a second warp roller, the axle axes of the first reversing wheel and the second reversing wheel are parallel to the axle axes of the first conical roller and the second conical roller, the third reversing wheel is connected with the first conical surface and the second conical surface of the first conical roller through a first weft, the fourth reversing wheel is connected with the third conical surface and the fourth conical surface of the second conical roller through a second weft, the axle axes of the third reversing wheel and the fourth reversing wheel are vertical to the axle axes of the first conical roller and the second conical roller, the first conical roller and the second conical roller are vertically arranged on a traveling shell, one end of the first conical roller is provided with a large gear, the large gear is meshed with a small gear, the small gear is arranged on an output shaft of a first main motor, the first main motor is arranged in a cylindrical shell, the transmission mechanism of the second conical roller is the same as that of the first conical roller, and the second conical roller is driven by a second main motor; the lower end cover and the upper sliding seat are connected through a first sliding rod, a second sliding rod and a third sliding rod, the first sliding rod, the second sliding rod and the third sliding rod penetrate through holes in the upper sliding seat, a first guide rod, a second guide rod and a third guide rod are arranged between the upper end cover and the lower sliding seat, the first guide rod, the second guide rod and the third guide rod penetrate through the lower sliding seat, thread holes are formed in the end face of the movable shell with the guide holes in the lower sliding seat, and first warps, second warps, first wefts and second wefts penetrate out of the thread holes in the end face of the movable shell.
Preferably, the wire cylinder is used as a driving mechanism of the bionic foot.
Furthermore, the outgoing line length of the line cylinder can be adjusted according to actual needs, and a first main motor and a second main motor in the line cylinder are servo motors.
Preferably, bearings are mounted on wheel shafts of the first reversing wheel, the second reversing wheel, the third reversing wheel and the fourth reversing wheel.
Preferably, two conical rollers are mounted in each wire cylinder.
The multifunctional platform is provided with a linear guide rail, a sliding block is arranged on the linear guide rail, an adapter plate is arranged on the sliding block, a first horizontal module and a second horizontal module are arranged at the bottom of the adapter plate, a moving support is arranged between the adapter plates, a first pressurizing module and a second pressurizing module are arranged on two sides of the moving support, and an accelerating module is arranged in the middle of the moving support.
First horizontal module, and the horizontal module of second and accelerate the module and use iron core linear electric motor as the basis, its structure includes rectangle permanent magnet and iron core coil, and rectangle permanent magnet pastes on the magnetic sheet, and iron core coil installs on the keysets.
The first pressurizing module and the second pressurizing module are based on a coreless linear motor and structurally comprise a U-shaped magnet and a coreless coil, the U-shaped magnet is installed in a U-shaped base, the U-shaped base is fixed on the adapter plate, the length of the coreless coil is smaller than that of the U-shaped base, and the coreless coil is fixed on the moving support.
Preferably, the first pressing module and the second pressing module are provided with dust covers.
A connecting rod is arranged on an adapter plate with an iron core coil of the acceleration module, a heavy hammer is arranged on the connecting rod, and a pressing wheel is arranged at the bottom of the heavy hammer.
The heavy hammer is of a gantry structure, a jacking oil cylinder is mounted at the bottom of the gantry, a pad is mounted on an output shaft of the jacking oil cylinder, a base of the jacking oil cylinder is mounted on a bearing, and the bearing is fixed in a bearing seat at the bottom of the heavy hammer.
The front end of the multifunctional platform is provided with a first radar, the rear end of the multifunctional platform is provided with a second radar, the first radar comprises a receiving antenna and a transmitting antenna, the receiving antenna and the transmitting antenna are disc-shaped, and a breadth adjusting shaft is arranged between the disc and the mounting platform.
Preferably, the ground penetrating radar works on the principle that the generated pulse electromagnetic wave is emitted to a target in a broadband short pulse mode in a certain angle by an antenna orientation, when the dielectric property of the material is discontinuous, transmission and reflection occur, and the reflection strength depends on the dielectric constant difference of the media on two sides of the interface. The antenna receives the feedback echo signal, the system adopts a forward or inversion method to carry out digital simulation and physical simulation according to the characteristics of electromagnetic wave amplitude, waveform, frequency and the like, and technicians directly identify technical characteristics from the display.
Preferably, the angles between the axes of the receiving antenna and the transmitting antenna and the normal line vertical to the ground are equal and are both 45 degrees.
The electric control part of the multifunctional platform comprises a main control system and a transceiver system, wherein the main control system comprises a pressure sensor NHDR2X6, an implementation signal acquisition processor HX711-BF and a large-capacity storage system STM32F101C8T6, the PO1 and PO2 pins of the large-capacity storage system STM32F101C8T6 are connected with an oscillator serving as a crystal oscillator clock, and the transceiver system comprises a transmitting controller and a receiving controller.
Compared with the prior art, the multifunctional road cyclic load detector has the beneficial effects that:
(1) compared with the traditional hydraulic cylinder and mechanical transmission mechanism, the unique linear cylinder mechanism is designed to serve as a power source of the bionic foot, a complex transmission mechanism is not required to be designed, an oil cylinder and an oil way are omitted, the load of equipment can be greatly reduced, and the possibility that the transmission mechanism is frequently used under the working conditions of high-speed vibration and the like is reduced.
(2) Compared with the traditional screw transmission mechanism, the linear motion module is used as a power source for horizontal motion and vertical motion, and the heavy hammer can perform horizontal motion or vertical motion for more times in the same time, so that the testing efficiency is improved.
(3) The bionic foot design enables the equipment to be suitable for cyclic load detection operation of steep slope pavements with various angles, and meanwhile, the absolute level of the test platform can be guaranteed by controlling the bending degree of four limbs, so that the accuracy of subsequent load tests is guaranteed.
(4) The mechanism can not only carry out impact load detection, but also carry out continuous load detection, has multiple purposes, can switch different modes at any time according to requirements, and improves the detection efficiency.
Drawings
FIG. 1 is a front view of the structure of the present invention;
FIG. 2 is a left side sectional view of the inventive structure;
FIG. 3 is a schematic view of a structural wire cylinder of the present invention;
FIG. 4 is a three-dimensional view of a structural wire cylinder of the present invention;
FIG. 5 is a layout diagram of a cone roller in a cylinder according to the present invention;
FIG. 6 is a schematic diagram of the cone roller transmission of the present invention;
FIG. 7 is a schematic view of the linkage of conical rollers according to the present invention;
FIG. 8 is a three-dimensional view of the structure of the heavy punch of the present invention;
FIG. 9 is a circuit diagram of a master control system of the architecture of the present invention;
FIG. 10 is a schematic diagram of the structural master control system of the present invention;
FIG. 11 is a Fresnel band diagram of the structure of the present invention.
Wherein,
1. the multifunctional platform comprises a multifunctional platform, 2, a bionic foot, 201, an upper limb swing rod, 202, a lower limb swing rod, 203, a buffer pad, 3, a first radar, 301, a receiving antenna, 302, a transmitting antenna, 303, a breadth adjusting shaft, 4, a second radar, 5, a rotating shaft, 6, a first wire cylinder, 7, a second wire cylinder, 8, a linear guide rail, 9, a sliding block, 10, an adapter plate, 11, a buffer hydraulic cylinder, 12, a first pressurizing module, 121, a U-shaped magnet, 122, an ironless coil, 13, a second pressurizing module, 14, an accelerating module, 141, a rectangular permanent magnet, 142, an ironless coil, 15, an anti-collision block, 16, a first horizontal module, 17, a second horizontal module, 18, a moving support, 19, a connecting rod, 20, a bearing, 21, a jacking oil cylinder, 22, a cushion block, 23, a pressing wheel, 24, a heavy hammer, 25, a first main motor, 26, a first reversing wheel, 27, a first reversing wheel, a second reversing, A first conical roller 271, a first conical surface 272, a second conical surface 28, a second conical roller 281, a third conical surface 282, a fourth conical surface 29, a third change wheel 30, a fourth change wheel 31, a gearwheel 32, a pinion 33, a traveling housing 34, a second change wheel 35, an upper end cover 36, a lower end cover 37, a second main motor 38, an upper sliding seat 39, a lower sliding seat 40, a first sliding rod 41, a second sliding rod 42, a third sliding rod 43, a first guide rod 44, a second guide rod 45, a third guide rod 46, an ear ring 47, a first warp 48, a second warp 49, a first weft 50, a second weft 49
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings.
A multifunctional road cyclic load detector comprises a multifunctional platform 1 and a bionic foot 2, wherein the bionic foot 2 comprises an upper limb swing rod 201, a lower limb swing rod 202 and a buffer pad 203, the upper limb swing rod 201 is connected with the multifunctional platform 1 through a rotating shaft 5, the upper limb swing rod 201 and the multifunctional platform 1 are provided with a first cylinder 6, the upper limb swing rod 201 and the lower limb swing rod 202 are connected through the rotating shaft 5, a second cylinder 7 is arranged between the lower limb swing rod 202 and the multifunctional platform 1, two ends of the first cylinder 6 are provided with ear rings 46, the ear rings 46 are arranged on an upper end cover 35 and a lower end cover 36, the upper end cover 35 is provided with a first reversing wheel 26 and a second reversing wheel 34, the lower end cover 36 is provided with a third reversing wheel 29 and a fourth reversing wheel 30, the first reversing wheel 26 is connected with a first conical surface 271 of the first conical roller 27 and a third conical surface 281 of the second conical roller 28 through a first warp 47, the fourth reversing wheel 30 is connected with the second conical surface 272 of the first conical roller 27 and the fourth conical surface 282 of the second conical roller 28 through the second warp 48, the axle axes of the first reversing wheel 26 and the second reversing wheel 34 are parallel to the axle axes of the first conical roller 27 and the second conical roller 28, the third reversing wheel 29 is connected with the first conical surface 271 and the second conical surface 282 of the first conical roller 27 through the first weft 49, the fourth reversing wheel 30 is connected with the third conical surface 281 and the fourth conical surface 282 of the second conical roller 28 through the second weft 50, the axle axes of the third reversing wheel 29 and the fourth reversing wheel 30 are perpendicular to the axle axes of the first conical roller 27 and the second conical roller 28, the first conical roller 27 and the second conical roller 28 are arranged up and down on the traveling case 33, one end of the first conical roller 27 is provided with the large gear 31, the large gear 31 is engaged with the small gear 32, the small gear 32 is arranged on the output shaft of the first main motor 25, the first main motor 25 is arranged in the cylindrical shell 33, the transmission mechanism of the second conical roller 28 is the same as that of the first conical roller 27, the second conical roller 28 is driven by a second main motor 37, the lower end cover 36 is connected with the upper sliding seat 38 through a first sliding rod 40, a second sliding rod 41 and a third sliding rod 42, the first sliding rod 40, the second sliding rod 41 and the third sliding rod 42 penetrate through an opening on the upper sliding seat 38, a first guide rod 43, a second guide rod 44 and a third guide rod 45 are arranged between the upper end cover 35 and the lower sliding seat 39, and the first guide rod 43, the second guide rod 44 and the third guide rod 45 penetrate through guide holes on the lower sliding seat 39; the end face of the floating shell 33 is provided with a thread hole, and the first warp yarn 47, the second warp yarn 48, the first weft yarn 49 and the second weft yarn 50 penetrate out of the thread hole on the end face of the floating shell 33.
As a first embodiment of the invention, the multifunctional detection platform has two functions of impact load detection and continuous load detection, in an impact load detection experiment, a heavy hammer is used as an execution mechanism, the heavy hammer is brought to a high position through an acceleration load module after being electrified and then descends at a high speed, a pressing wheel impacts the ground, ground crack data before impact is detected and recorded through a radar arranged at the front part of the platform, ground crack data after impact is detected through a radar arranged at the rear part of the platform, and the ground crack data are compared to obtain the change of the bottom surface under a certain equivalent impact load.
Furthermore, in the experiment process, in order to reduce the vibration of the vehicle body caused by the recoil force generated when the heavy hammer knocks the ground at high speed, the first pressurizing module and the second pressurizing module are arranged on two sides of the accelerating module, the main structure of the pressurizing module is a coreless linear motor, in the module, the length of coil active cell is less than the length of magnet, when the weight down accelerates, first pressurization module and second pressurization module outage, the recoil force that the weight impact ground brought makes the active cell go upward on being used in module active cell, the coil does left cutting magnetic line of force motion in the magnetic field and produces induced electromotive force, this kind of induced electromotive force can produce damping force to the motion of active cell as a back electromotive force, add the positioning force of permanent magnet to coil on the magnetic plate, just can alleviate the impact that the recoil force caused the automobile body to a great extent.
In the continuous load detection experiment, the weight is still used as an actuating mechanism as the actuating mechanism, but in the continuous load detection experiment, the weight mechanism is driven by the first horizontal module and the second horizontal module to move horizontally, the continuous pressure of the weight on the ground is changed by changing the extension length of the hydraulic cylinder, and meanwhile, the cracks of the roadbed are monitored in real time through radars installed at two ends of the platform.
A linear guide rail 8 is installed on the multifunctional platform 1, a sliding block 9 is arranged on the linear guide rail 8, an adapter plate 10 is arranged on the sliding block 9, a first horizontal module 16 and a second horizontal module 17 are installed at the bottom of the adapter plate 10, a moving support 18 is installed between the adapter plates 10, a first pressurizing module 12 and a second pressurizing module 13 are arranged on two sides of the moving support 18, and an accelerating module 14 is arranged in the middle of the moving support 18.
As a first embodiment of the invention, the first horizontal module 16 and the second horizontal module 17 are respectively provided with a motor, and the movement of the multifunctional platform adopts a gantry double-drive mode.
As a second embodiment of the invention, the first horizontal module 16 is provided with a motor, the second horizontal module 17 is provided with only a guide rail slide block, and the multifunctional platform moves in a gantry single-drive mode.
As a first embodiment of the invention, the upper end cover 35 and the lower slide block 39 are connected through a first slide bar 40, a second slide bar 41 and a third slide bar 42, and the components are reciprocated along the guide bar during operation.
As a first embodiment of the present invention, a first guide rod 51, a second guide rod 52 and a third guide rod 53 are arranged between the lower end cover 36 and the upper slide holder 38, and the components formed by the above parts swing around the rotating shaft of the lower end cover 36 during the operation process.
The first horizontal module 16, the second horizontal module 17 and the acceleration module 14 are based on a linear motor with an iron core, and structurally comprise a rectangular permanent magnet 141 and an iron core coil 142, wherein the rectangular permanent magnet 141 is adhered to a magnetic plate, and the iron core coil 142 is arranged on the adapter plate 10.
As a first embodiment of the present invention, hydraulic cylinders are installed on both sides of the acceleration module 14.
As a first embodiment of the present invention, a spring is installed at the bottom of the mover of the acceleration module 14, and when the acceleration module 14 is powered off, the weight is prevented from falling by the elastic force of the spring.
The first pressurizing module 12 and the second pressurizing module 13 are based on a coreless linear motor, and structurally comprise a U-shaped magnet 121 and a coreless coil 122, the U-shaped magnet 121 is installed in a U-shaped base, the U-shaped base is fixed on the adapter plate 10, the length of the coreless coil 122 is smaller than that of the U-shaped base, and the coreless coil 122 is fixed on the moving support 18.
The connecting rod 19 is mounted on the adapter plate with the iron core coil 142 of the acceleration module 14, the weight 24 is mounted on the connecting rod 19, and the pinch roller 23 is mounted at the bottom of the weight 24.
The heavy hammer 24 is of a gantry structure, a jacking oil cylinder 21 is arranged at the bottom of the gantry structure, a cushion block 22 is arranged on an output shaft of the jacking oil cylinder 21, a base of the jacking oil cylinder 21 is arranged on a bearing, and the bearing is fixed in a bearing seat at the bottom of the heavy hammer 24.
As a first embodiment of the invention, the multifunctional platform 1 can only move forwards in the working process, when reverse movement is needed, the jacking oil cylinder 21 is driven to extend the output shaft of the jacking oil cylinder, when the cushion block 22 contacts the ground, the platform is wholly separated from the ground, at the moment, the platform is manually rotated, the jacking oil cylinder 21 rotates around a bearing arranged at the bottom of the oil cylinder, when the platform rotates to a proper position, the output shaft of the jacking oil cylinder 21 is controlled to retract, and four limbs of the multifunctional platform 1 contact the ground.
The front end of the multifunctional platform 1 is provided with a first radar 3, the rear end of the multifunctional platform 1 is provided with a second radar 4, the first radar 3 comprises a receiving antenna 301 and a transmitting antenna 302, the receiving antenna 301 and the transmitting antenna 302 are disc-shaped, and a breadth adjusting shaft 303 is arranged between the disc and the mounting platform.
As a first embodiment of the invention, a road pavement base layer in an operation period is subjected to a traffic load transmitted by a surface layer and the action of underground water, so that the base layer is easy to cause local incompactness or uneven strength under a complex environment, specifically, a roadbed is empty and even subsides, however, the diseases are mainly generated on wheel tracks of traffic lanes, the positions of radar measuring lines are arranged along the wheel tracks of each traffic lane, when abnormality is found, encryption detection is carried out, a transverse detection section is arranged in a suspected disease area, and the encrypted measuring line length and the transverse section measuring line length are completely observed based on the abnormality until the vertical position of the disease is located.
As a first embodiment of the present invention, the selection of the radar center frequency reflects the contradiction between the maximum detection depth and the minimum resolution, so that the selection of the radar center frequency needs to consider the detection depth, the resolution and whether the antenna size meets the field requirement. In practical applications, the low-frequency radar should be used as much as possible on the premise of meeting the resolution requirement so as to increase the detection longitudinal range.
As a first embodiment of the present invention, the detection time window refers to a range in which the detection depth is expressed by time nanosecond, and the length of the time window is determined according to the actually required detection depth H and the transmission speed of the electromagnetic wave in the medium to be detected, and may also be calculated according to the following formula:
in the formula: hMAX-pre-estimating a maximum detection depth;
v-the average speed of propagation of the radar waves in each structural layer of the pavement;
w-sampling time window
The electric control part of the multifunctional platform comprises a main control system and a transceiver system, wherein the main control system comprises a pressure sensor NHDR2X6, an implementation signal acquisition processor HX711-BF and a large-capacity storage system STM32F101C8T6, the PO1 and PO2 pins of the large-capacity storage system STM32F101C8T6 are connected with an appropriate oscillator as a crystal oscillator clock, and the transceiver system comprises a transmitting controller and a receiving controller.
Referring to fig. 11, the lateral resolution of the ground penetrating radar is mainly illustrated by a fresnel zone as a first embodiment of the present invention. Wave theory holds that an incident wavefront, when it reaches a reflective interface, forms a reflected wave that is a banded distribution of the energy that is superimposed or subtracted as mutual interference on one face.
Assuming that the buried depth of the reflection interface is z, and the distance between the transmitting antenna and the receiving antenna is far less than z, the minimum transverse resolution can be calculated as:
in the formula: r isf-lateral minimum resolution
Wavelength of lambda radar wavelet
Buried depth length of z-anomaly
As a first embodiment of the invention, the longitudinal resolution of the radar is mainly used to identify the presence of the road surface lamellar structure, the higher the resolution, the thinner the smallest horizon it can react to. The narrower the pulse signal in the time domain, the wider the frequency band range, and the higher the longitudinal resolution, which is calculated by the pulse width calculation formula: it can be seen that the main frequency of the radar is inverse to the pulse width, i.e. the higher the center frequency of the radar, the higher the longitudinal resolution.
In summary, the present invention is not limited to the above-mentioned embodiments, and those skilled in the art can propose other embodiments within the teaching of the present invention, but these embodiments are included in the scope of the present invention.
Claims (7)
1. The utility model provides a multi-functional road circulation load detection machine, its characterized in that, includes multi-functional platform (1) and bionical foot (2) two parts, bionical foot (2) comprises upper limbs pendulum rod (201), low limbs pendulum rod (202) and cushion (203) triplex, upper limbs pendulum rod (201) through pivot (5) with multi-functional platform (1) is connected, upper limbs pendulum rod (201) with install first wire jar (6) between multi-functional platform (1), pass through between upper limbs pendulum rod (201) and the low limbs pendulum rod (202) pivot (5) are connected, install second wire jar (7) between low limbs pendulum rod (202) and multi-functional platform (1), there are earrings (46) at the both ends of first wire jar (6), earrings (46) are installed on upper end cover (35) and lower extreme cover (36), install first reverse wheel (26) and second reverse wheel (34) on upper end cover (35), the lower end cover (36) is provided with a third reversing wheel (29) and a fourth reversing wheel (30), a first warp (47) starts from a first conical surface (271) of a first conical roller (27) and bypasses the first reversing wheel (26) to be connected with a third conical surface (281) of a second conical roller (28), a second warp (48) starts from a second conical surface (272) of the first conical roller (27) and bypasses the fourth reversing wheel (30) to be connected with a fourth conical surface (282) of the second conical roller (28), the axle axes of the first reversing wheel (26) and the second reversing wheel (34) are parallel to the axle axes of the first conical roller (27) and the second conical roller (28), and a first weft (49) starts from the first conical roller (271) of the first conical roller (27), bypasses the third reversing wheel (29) to be connected with the second conical surface (272), the second weft thread (50) is connected with the fourth conical surface (282) after passing by the fourth reversing wheel (30) from the third conical surface (281) of the second conical roller (28), the axes of the third reversing wheel (29) and the fourth reversing wheel (30) are vertical to the axle axes of the first conical roller (27) and the second conical roller (28), the first conical roller (27) and the second conical roller (28) are arranged on a traveling shell (33) up and down, one end of the first conical roller (27) is provided with a large gear (31), the large gear (31) is meshed with a small gear (32), the small gear (32) is arranged on the output shaft of a first main motor (25), the first main motor (25) is arranged in the barrel-shaped shell (33), the transmission mechanism of the second conical roller (28) is the same as that of the first conical roller (27), the second cone roller (28) is driven by a second main motor (37), the lower end cover (36) is connected with the upper sliding seat (38) through a first sliding rod (40), a second sliding rod (41) and a third sliding rod (42), the first sliding rod (40), the second sliding rod (41) and the third sliding rod (42) penetrate through guide holes in the end face of the upper sliding seat (38), a first guide rod (43), a second guide rod (44) and a third guide rod (45) are arranged between the upper end cover (35) and the lower sliding seat (39), and the first guide rod (43), the second guide rod (44) and the third guide rod (45) penetrate through guide holes in the end face of the lower sliding seat (39); the end face of the floating shell (33) is provided with a thread hole, and the first warp (47), the second warp (48), the first weft (49) and the second weft (50) penetrate out of the thread hole in the end face of the floating shell (33).
2. The multifunctional road cyclic load detector as claimed in claim 1, wherein a linear guide rail (8) is mounted on the multifunctional platform (1), a slider (9) is disposed on the linear guide rail (8), an adapter plate (10) is mounted on the slider (9), a first horizontal module (16) and a second horizontal module (17) are mounted at the bottom of the adapter plate (10), a moving bracket (18) is mounted between the adapter plates (10), a first pressurizing module (12) and a second pressurizing module (13) are disposed on two sides of the moving bracket (18), and an accelerating module (14) is disposed in the middle of the moving bracket (18).
3. The multifunctional road circulating load detector as claimed in claim 2, wherein the first horizontal module (16), the second horizontal module (17) and the accelerating module (14) are based on a cored linear motor, the structure of the multifunctional road circulating load detector comprises a rectangular permanent magnet (141) and a cored coil (142), the rectangular permanent magnet (141) is adhered to a magnetic plate, and the cored coil (142) is installed on the adapter plate (10).
4. The multifunctional road circulating load detector as claimed in claim 2, wherein the first pressurizing module (12) and the second pressurizing module (13) are based on a coreless linear motor, and the structure of the multifunctional road circulating load detector comprises a U-shaped magnet (121) and a coreless coil (122), the U-shaped magnet (121) is installed in a U-shaped base, the U-shaped base is fixed on the adapter plate (10), the length of the coreless coil (122) is smaller than that of the U-shaped base, and the coreless coil (122) is fixed on the traveling bracket (18).
5. The multifunctional road circulating load detector as claimed in claim 2, wherein a connecting rod (19) is mounted on the adapter plate of the iron-cored coil (142) of the acceleration module (14), a heavy hammer (24) is mounted on the connecting rod (19), a pressing wheel (23) is mounted at the bottom of the heavy hammer (24), the heavy hammer (24) is of a gantry structure, a jacking cylinder (21) is mounted at the bottom of the gantry structure, a cushion block (22) is mounted on the output shaft of the jacking cylinder (21), and a cylinder base of the jacking cylinder (21) is mounted on a bearing, wherein the bearing is fixed in a bearing seat at the bottom of the heavy hammer (24).
6. The multifunctional road cyclic load detector as claimed in claim 1, wherein a first radar (3) is installed at the front end of the multifunctional platform (1), a second radar (4) is installed at the rear end of the multifunctional platform (1), the first radar (3) comprises a receiving antenna (301) and a transmitting antenna (302), the receiving antenna (301) and the transmitting antenna (302) are disc-shaped, and a breadth adjusting shaft (303) is arranged between the disc and the installation platform.
7. The multifunctional road cyclic load detector as claimed in claim 1, wherein the electric control part of the multifunctional platform (1) comprises two parts of a main control system and a transceiver system, the main control system comprises a pressure sensor NHDR2X6, a signal acquisition processor HX711-BF and a mass storage system STM32F101C8T6, the PO1 and PO2 pins of the mass storage system STM32F101C8T6 are connected with oscillators as crystal oscillator clocks, and the transceiver system comprises two parts of a transmitting controller and a receiving controller.
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| CN201811414715.6A CN109554996B (en) | 2018-11-26 | 2018-11-26 | Multifunctional road cyclic load detector |
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| CN201811414715.6A CN109554996B (en) | 2018-11-26 | 2018-11-26 | Multifunctional road cyclic load detector |
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| CN111501498A (en) * | 2020-05-07 | 2020-08-07 | 青田昙正测量仪器有限公司 | Pavement detection device based on detector |
| CN112054283A (en) * | 2020-09-09 | 2020-12-08 | 重庆南方迪马专用车股份有限公司 | Vehicle-mounted antenna lodging device |
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| JP2002174588A (en) * | 2000-12-07 | 2002-06-21 | Fukuda Road Construction | Method and apparatus for test of water-permeable pavement |
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| CN109554996B (en) | 2021-11-02 |
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