CN111827244A - Automatic acquisition device and measurement method for Beckman beam deflectometer - Google Patents
Automatic acquisition device and measurement method for Beckman beam deflectometer Download PDFInfo
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- CN111827244A CN111827244A CN202010705288.8A CN202010705288A CN111827244A CN 111827244 A CN111827244 A CN 111827244A CN 202010705288 A CN202010705288 A CN 202010705288A CN 111827244 A CN111827244 A CN 111827244A
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- E—FIXED CONSTRUCTIONS
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- E02D1/00—Investigation of foundation soil in situ
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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
The application discloses an automatic acquisition device and a measurement method of a Beckman beam deflectometer, which comprise an auxiliary acquisition vehicle, a Beckman beam and an information monitoring system; the auxiliary collecting vehicle comprises a frame body, a bracket vertically and slidably mounted on the frame body, a height adjusting piece for adjusting the height of the bracket and a mounting frame; the end part of the bracket is positioned outside the rack, and the Beckman beam is placed and supported at the end part of the bracket; the information monitoring system comprises a displacement sensor, a distance measuring sensor, a micro-processing unit, a display unit and a power supply unit; the displacement sensor is used for automatically and continuously acquiring the data of the rebound deflection of the road subgrade; the distance measuring sensor is used for automatically and continuously acquiring the distance between the standard vehicle and a measuring point; and the micro-processing unit processes, displays, stores and outputs the data collected by the displacement sensor and the distance measuring sensor. The automatic acquisition device and the measurement method of the Beckman beam deflectometer can acquire data in real time, improve the field detection efficiency and enable the measurement result to be more accurate and reliable.
Description
Technical Field
The application relates to the field of pavement roadbed deflection measurement, in particular to an automatic acquisition device and a measurement method of a Beckman beam deflection instrument.
Background
The deflection value is the magnitude of deformation of the roadbed and the pavement before and after the load acts on the roadbed/the pavement. If the deflection value is too large, the deformation of the road surface is larger, and each layer of the road surface is easy to damage. The deflection value is used as an important detection index and reflects the overall strength quality of the pavement. Therefore, the characteristic curve of the pavement deflection basin is accurately measured, and the method plays an extremely important role in knowing the change rule of pavement deflection, accurately evaluating the pavement quality and objectively estimating the pavement service life.
At present, the method of measuring the rebound deflection of the roadbed of the road is mainly adopted in the construction and construction of the highway by adopting a Beckman beam method. The main equipment adopted by the method comprises a standard vehicle and a Beckman beam, wherein a lever fulcrum is arranged at one third of the whole length of the Beckman beam to divide a beam body into a longer front arm and a shorter rear arm (namely, the length ratio of the front arm to the rear arm is 2: 1). The front arm is contacted with roadbed/road surface, and the rear arm is equipped with dial indicator mechanical displacement meter.
When the deflection test is carried out, the standard vehicle slowly advances, loads are applied to the road surface to deform the road surface, the dial indicator continuously rotates forwards along with the increase of the road surface deformation, when the indicator needle rotates to the maximum value, the initial reading is rapidly read, the standard vehicle continuously advances, the indicator needle of the dial indicator reversely rotates, and after the indicator needle rotates stably, the final reading is read again.
However, when the test is performed by using the beckmann beam deflectometer, the following disadvantages exist: firstly, 4 persons are needed to complete the carrying of the Beckman beam arm, the zero setting of the dial indicator and the reading and recording of test data, more manpower resources are consumed, the labor intensity of the persons is higher, and the working efficiency is lower; secondly, the testing process is greatly influenced by human factors, and the accuracy of the testing result cannot be well ensured.
Disclosure of Invention
The application aims to provide an automatic acquisition device and a measurement method for a Beckman beam deflectometer, which can acquire data in real time, improve the field detection efficiency and enable the measurement result to be more accurate and reliable.
The above object of the present application is achieved by the following technical solutions:
an automatic acquisition device of a Beckman beam deflectometer comprises an auxiliary acquisition vehicle, a Beckman beam and an information monitoring system; the auxiliary collecting vehicle comprises a frame body with a conveying platform, a bracket vertically and slidably mounted on the frame body, a height adjusting piece driving the bracket to reciprocate along the height direction, and a mounting frame with a telescopic length; the end part of the bracket is positioned outside the rack body, and the Beckman beam is placed and supported at the end part of the bracket; the information monitoring system comprises a displacement sensor, a distance measuring sensor, a micro-processing unit, a display unit and a power supply unit; the displacement sensor is arranged on the mounting frame and used for automatically and continuously collecting the data of the rebound deflection of the road subgrade; the distance measuring sensor is arranged on the frame body and used for automatically and continuously collecting the distance between the standard vehicle and the measuring point; the micro-processing unit processes, displays, stores and outputs the data collected by the displacement sensor and the distance measuring sensor; the display unit is used for outputting the data processed by the micro-processing unit; the power supply unit is connected with the displacement sensor, the distance measuring sensor, the micro-processing unit and the display unit in a power supply mode.
By adopting the technical scheme, the Beckman beam can be directly placed at the end part of the bracket and transferred to the next measuring point along with the auxiliary collecting vehicle without being carried by four workers, so that the labor force is effectively liberated, and the field detection efficiency is improved; the information monitoring system can automatically and continuously acquire data, the required acquired data is completely stored in the microprocessing unit in real time, the defect that only a single-point deflection value can be detected by using a mechanical dial indicator in the conventional Beckman beam measuring method is overcome, the real-time performance, the multi-point continuity and the integrity of the required data are ensured, and errors possibly generated during manual reading are avoided.
The application is further configured to: the support body includes that the appearance is the frame of rectangle, sets up pole setting and transportation platform at the frame corner, the vertical setting of pole setting, its top and frame rigid coupling, bottom and transportation platform rigid coupling, the auto-lock universal wheel is installed to transportation platform bottom.
Through adopting above-mentioned technical scheme, the support body that frame, pole setting, transportation platform are constituteed provides the installation basis for bracket and information monitoring system to realize the man roof beam transport of beckman and information real-time collection function.
The application is further configured to: the bracket mainly comprises two straight plates which are distributed in a crossed manner, and the end part of the bracket is in sliding fit with the upright rod; the height adjusting piece comprises a lead screw vertically rotatably installed on the frame body and a force application piece installed at the top of the lead screw, and the lead screw is in threaded connection with the bracket.
Through adopting above-mentioned technical scheme, the bracket sets up alternately to with the pole setting sliding fit of support body, when making the bracket can provide the support to the graceful roof beam of becker, still with the interior partition of support body into a plurality of triangle regions, effectively improved the stability of support body. Utilize the lead screw to order about the bracket and make the reciprocating motion that goes up and down, screw drive is steady swift, makes the more stable of placing of the graceful roof beam of beckman on the bracket.
The application is further configured to: the mounting bracket includes the telescopic link, with telescopic link horizontal installation mount pad on transport platform, and connect the holder at the telescopic link expansion end, the holder has the elasticity and presss from both sides the mouth, displacement sensor is arranged in the elasticity presss from both sides the mouth.
The application is further configured to: the movable end of the telescopic rod is vertically and fixedly connected with a connecting rod, the clamping piece comprises a sliding sleeve which is slidably arranged on the connecting rod and a clamping plate which is horizontally and fixedly connected on the sliding sleeve, and the elastic clamping opening is formed in the end part, far away from the sliding sleeve, of the clamping plate; the sliding sleeve is positioned on the connecting rod through a jackscrew.
Through adopting above-mentioned technical scheme, displacement sensor installs in the elasticity presss from both sides the mouth, utilizes the telescopic link to realize length direction and adjusts, utilizes sliding sleeve and connecting rod cooperation to realize the direction of height and adjusts to this precision adjustment installation that realizes displacement sensor.
The application is further configured to: the two groups of mounting racks are arranged on two sides of the transportation platform oppositely; the telescopic rods of the two groups of mounting frames are arranged in a vertically staggered manner.
By adopting the technical scheme, the auxiliary collecting vehicle can measure the Beckman beams on two sides at the same time, the measured data can be contrasted and corrected, and the measuring accuracy is improved.
The application is further configured to: the information monitoring system further comprises a temperature sensor for automatically and continuously acquiring the temperature of the road surface.
By adopting the technical scheme, the field temperature factor can be referred to when the data is processed, and the accuracy of the data is improved.
The application is further configured to: the information monitoring system also comprises an incremental encoder which is in signal connection with the micro-processing unit and is used for carrying out measurement point pile number setting, time interval setting and logic calculation on the data acquired and processed by the micro-processing unit.
The second purpose of the present application is achieved by the following technical scheme:
a measuring method of an automatic acquisition device of a Beckman beam deflectometer comprises the following steps:
checking and maintaining the vehicle condition of the standard vehicle, and aligning the wheel clearance of the rear wheel of the standard vehicle to the position 3-5cm behind the measuring point;
checking each component and a connecting node in the information monitoring system;
manually inserting the Beckman beam into a wheel gap of the rear wheel of the standard vehicle, wherein the direction of the Beckman beam is consistent with that of the standard vehicle, and the measuring head of the Beckman beam is positioned 3-5cm in front of the center of the wheel gap;
adjusting the position of the positioning auxiliary acquisition vehicle, adjusting the length and the height of the mounting frame, and mounting the displacement sensor on the mounting frame to enable the displacement sensor to be in contact with the Beckman beam, so that the whole information monitoring system is in a state of starting to collect data;
the commander sends a forward command, the standard vehicle advances, the information monitoring system firstly acquires a maximum value, a final value is acquired when the standard vehicle drives out to influence the distance, and the micro-processing unit processes and stores the measured data to finish the measurement of the measuring point;
the method comprises the following steps of placing and supporting a Beckman beam at the end part of a bracket, and lifting the bracket by utilizing a lead screw to advance the Beckman beam to a next measuring point along with the auxiliary collecting vehicle;
and repeating the steps, continuously and completely detecting the rebound deflection value of the roadbed of the road, and finally processing the output data.
In summary, the present application has the following beneficial effects: an auxiliary collection vehicle is arranged for the Beckman beam, and the Beckman beam can be placed on the auxiliary collection vehicle for synchronous transfer; the auxiliary acquisition vehicle is provided with the information monitoring system to automatically and continuously acquire data, the required acquired data is completely stored in the micro-processing unit in real time, the defect that only a single-point deflection value can be detected by using a mechanical dial indicator in the conventional measuring method for measuring the rebound deflection of the roadbed of the pavement through the Beckman beam is overcome, and the real-time property, the multi-point continuity and the integrity of the required data and errors possibly generated during manual reading are guaranteed.
Drawings
FIG. 1 is a schematic structural diagram of an automatic acquisition device of a Beckman beam deflectometer in the embodiment;
FIG. 2 is a schematic structural diagram of an auxiliary collecting vehicle in the embodiment;
fig. 3 is a schematic block diagram of an information monitoring system in an embodiment.
In the figure, 1, an auxiliary collecting vehicle; 11. a transport platform; 12. erecting a rod; 13. a frame; 14. a universal wheel; 2. a Beckman beam; 3. an information monitoring system; 31. a displacement sensor; 32. a ranging sensor; 33. a temperature sensor; 34. a micro-processing unit; 35. an incremental encoder; 36. a display unit; 37. a power supply unit; 4. a bracket; 5. a height adjustment member; 51. a lead screw; 52. a force application member; 6. a mounting frame; 61. a telescopic rod; 611. an inner rod; 612. an outer tube; 62. a mounting seat; 63. a clamping member; 631. a sliding sleeve; 632. a clamping plate; 633. an elastic nip; 64. a connecting rod.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
An automatic acquisition device of a Beckman beam deflectometer is shown in figure 1 and comprises an auxiliary acquisition vehicle 1, a Beckman beam 2 and an information monitoring system 3. Wherein the Beckman beam 2 can be placed on the auxiliary collection vehicle 1 and transferred through the auxiliary collection vehicle 1; the information monitoring system 3 is arranged on the auxiliary collecting vehicle 1 and used for measuring and recording relevant data of the road surface deflection value in real time.
As shown in fig. 1 and 2, the auxiliary collecting vehicle 1 includes a transportation platform 11, four upright posts 12 which are distributed in a rectangular shape are vertically and fixedly connected to the top of the transportation platform 11, a rectangular frame 13 is horizontally and fixedly connected to the top of the upright posts 12, and the frame 13, the upright posts 12 and the transportation platform 11 form a frame body of the auxiliary collecting vehicle 1; the bottom of the transportation platform 11 is provided with self-locking universal wheels 14 so as to facilitate the transfer or positioning of the rack body.
A bracket 4 and a height adjusting member 5 for adjusting the height of the bracket 4 are horizontally arranged in a frame body of the auxiliary collecting vehicle 1. Wherein the bracket 4 is X-shaped and is formed by splicing two straight plates which are distributed in a crossed way; the cross-overlapped part of the bracket 4 is positioned at the center of the transportation platform 11, and the end part of the bracket extends out of the frame body and is used for hanging and supporting the Beckman beam 2; the through-hole has all been seted up to the position department that bracket 4 is close to self tip, and bracket 4 establishes on pole setting 12 through the through-hole cover to with support body sliding fit.
The height adjusting part 5 comprises a screw rod 51 and a force application part 52, the bottom of the screw rod 51 vertically penetrates through the overlapped part of the bracket 4 and is rotatably arranged on the transportation platform 11 by matching with a bearing seat fixedly connected on the transportation platform 11; a support plate is horizontally and fixedly connected to the frame 13 of the frame body, and the top of the screw 51 penetrates through the support plate and is in running fit with the support plate through a bearing. In this embodiment, the force applying member 52 is selected as a manual crank and is fixedly connected to the top of the screw 51.
The force application part 52 drives the screw rod 51 to rotate, so that the bracket 4 does lifting reciprocating motion along the axis of the screw rod 51, the end part of the bracket 4 is matched with the upright rod 12 to play a role in guiding and limiting the bracket 4, and the lifting process of the bracket 4 is more stable.
An installation frame 6 with adjustable length is also arranged in the frame body, and the installation frame 6 is positioned below the bracket 4. The mounting frame 6 comprises a telescopic rod 61, a mounting seat 62 for horizontally mounting the telescopic rod 61 in the frame body, and a clamping piece 63 connected to the movable end of the telescopic rod 61.
Specifically, the mounting seat 62 is fixedly connected to the top of the transportation platform 11, and the mounting seat 62 is horizontally provided with a mounting hole; the telescopic rod 61 comprises an inner rod 611 and an outer tube 612, and the outer tube 612 is arranged in the mounting hole in a penetrating manner and fixedly connected with the mounting seat 62; an inner rod 611 is inserted through the outer tube 612 in sliding engagement with the outer tube 612. The cross section of the telescopic rod 61 is rectangular, or a sliding block is fixedly connected to the peripheral surface of the inner rod 611, a sliding groove is formed in the outer tube 612, and the sliding block is in sliding limit fit with the sliding groove, so that the inner rod 611 can slide stably in the outer tube 612.
The outer tube 612 is in threaded connection with a jackscrew, and the end of the jackscrew can penetrate through the tube wall and press against the inner rod 611, so that the inner rod 611 is positioned in the outer tube 612.
The clamping piece 63 is provided with an elastic clamping opening 633 for clamping and mounting components in the information monitoring system 3; the clamping member 63 is connected to one end of the inner rod 611 far away from the outer tube 612, and the position of the component in the horizontal direction is adjusted through the telescopic rod 61.
Further, a connecting rod 64 is fixedly connected to the end of the inner rod 611 far away from the outer tube 612; the clamping piece 63 is provided with a sliding sleeve 631 in sliding fit with the connecting rod 64, the outer surface of the sliding sleeve 631 extends along the radial direction to form a clamping plate 632, and an elastic clamping opening 633 is arranged at the end of the clamping plate 632; the sliding sleeve 631 slides on the connecting rod 64 to drive the component mounted on the clamping plate 632 to move synchronously, so as to adjust the position of the component in the vertical direction. The sliding sleeve 631 is also fixedly connected with the connecting rod 64 through a jackscrew.
The outer tube 612 of the telescopic rod 61 is completely located in the frame body through the mounting seat 62, and the end of the outer tube 612 facing the inner rod 611 is spaced from the edge of the frame body, so that after the inner rod 611 retracts into the outer tube 612, the clamping member 63 is located at the spaced position, that is, the clamping member 63 is also located in the frame body; when in order to avoid supplementary collection car 1 to remove, the components and parts of installing on holder 63 take place to collide with and damage, play the guard action to components and parts.
The mounting racks 6 are arranged in two groups in the frame body and are oppositely arranged on the transportation platform 11; the telescopic rods 61 of the two groups of mounting frames 6 are distributed in the same axial direction in a vertically staggered manner so as to avoid position interference.
As shown in fig. 3, the information monitoring system 3 includes a displacement sensor 31, a distance measuring sensor 32, a temperature sensor 33, a microprocessor unit 34, an incremental encoder 35, a display unit 36, and a power supply unit 37.
Wherein, displacement sensor 31 is installed in the elasticity of holder 63 presss from both sides mouth 633 for the automatic resilience deflection value data that gathers road surface road bed in succession.
The distance measuring sensor 32 is arranged on the frame body and used for automatically and continuously collecting the distance between the standard vehicle and the measuring point.
The temperature sensor 33 is mounted on the transport platform 11 for automatically and continuously acquiring the road surface temperature.
The micro-processing unit 34 is mounted on the frame body, and can be connected with the displacement sensor 31, the distance measuring sensor 32 and the temperature sensor 33 through wireless communication, and process, store and output data collected by the displacement sensor 31, the distance measuring sensor 32 and the temperature sensor 33.
The incremental encoder 35 is arranged on the frame body and is in signal connection with the microprocessing unit 34; the incremental encoder 35 performs measurement point pile number setting, time interval setting and logic calculation on the data acquired and processed by the micro-processing unit 34.
The display unit 36 is mounted on the frame 13 of the rack body, connected with the microprocessor unit 34, and used for displaying data processed by the microprocessor unit 34; the micro-processing unit 34 can be connected to a printer by a USB interface or a Bluetooth signal connection, and prints and outputs data.
The power supply unit 37 is used as a power supply source and is electrically connected to each component in the information monitoring system 3.
The application discloses a 2 benkelman roof beam benkelman beams deflectometer automatic acquisition device's specific measurement process as follows:
checking and keeping the good vehicle condition and braking performance of the standard vehicle, and aligning the wheel gap of the rear wheel of the standard vehicle to the position about 3-5cm behind the measuring point;
checking whether each component and connecting node in the information monitoring system 3 meet the requirement to be tested;
manually inserting the Beckman beam 2 into a wheel gap of a rear wheel of a standard vehicle, wherein the direction of the Beckman beam 2 is consistent with that of the standard vehicle, a beam arm cannot touch a tire, and a measuring head of the Beckman beam 2 is positioned 3-5cm in front of the center of the wheel gap;
the position of the auxiliary acquisition vehicle 1 is adjusted, the length and the height of the mounting frame 6 are adjusted, the displacement sensor 31 is mounted on the mounting frame 6, the displacement sensor 31 is in contact with the Beckman beam 2, and the whole information monitoring system 3 is in a state of starting to collect data;
the commander sends a forward command, the standard vehicle advances, the information monitoring system 3 firstly acquires a maximum value, a final value is acquired when the standard vehicle drives out for influencing the distance (more than 3 meters), and the micro-processing unit 34 processes and stores the measured data to complete the measurement of the measuring point;
the Beckman beam 2 is placed and supported at the end part of the bracket 4, the bracket 4 is lifted by the lead screw 51, so that the Beckman beam 2 is advanced and moves to the next measuring point along with the front of the auxiliary collecting vehicle 1;
and repeating the steps, continuously and completely detecting the rebound deflection value of the roadbed of the road, and finally processing the output data.
In the measuring process, when the standard vehicle moves forward, the information monitoring system 3 starts to collect data until the distance measuring sensor 32 displays that the standard vehicle moves 5 meters away from the measuring point;
the data acquisition comprises the steps that a displacement sensor 31 synchronously acquires the rebound deflection value of a road subgrade, a distance measuring sensor 32 monitors the distance between a measuring point and a standard vehicle, and a temperature sensor 33 acquires the air temperature and the road surface temperature during the test;
the acquisition process is continuous acquisition according to a set time interval, such as 5ms or less;
the microprocessor 34 obtains an initial reading (maximum value) and a final reading (final value) from the series of data at the nth measuring point, calculates the measured value = (initial reading-final reading) × 2 at the nth measuring point through the incremental encoder 35, and displays the measured value through the display unit 36.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (10)
1. The utility model provides a graceful roof beam benkelman beams deflectometer automatic acquisition device of beck which characterized in that: the system comprises an auxiliary acquisition vehicle (1), a Beckman beam (2) and an information monitoring system (3);
the auxiliary collecting vehicle (1) comprises a frame body with a conveying platform (11), a bracket (4) vertically installed on the frame body in a sliding mode, a height adjusting piece (5) driving the bracket (4) to reciprocate along the height direction, and a mounting frame (6) arranged in a length telescopic mode;
the end part of the bracket (4) is positioned outside the frame body, and the Beckman beam (2) is placed and supported at the end part of the bracket (4);
the information monitoring system (3) comprises a displacement sensor (31), a distance measuring sensor (32), a micro-processing unit (34), a display unit (36) and a power supply unit (37);
the displacement sensor (31) is arranged on the mounting frame (6) and is used for automatically and continuously acquiring resilience deflection value data of the road subgrade;
the distance measuring sensor (32) is arranged on the frame body and used for automatically and continuously collecting the distance between the standard vehicle and the measuring point;
the micro-processing unit (34) processes, displays, stores and outputs the data collected by the displacement sensor (31) and the distance measuring sensor (32);
the display unit (36) is used for outputting the data processed by the micro-processing unit (34);
the power supply unit (37) is connected with the displacement sensor (31), the distance measuring sensor (32), the micro-processing unit (34) and the display unit (36) in a power supply mode.
2. The automatic acquisition device of the beckmann beam deflectometer according to claim 1, wherein: the support body includes that appearance is frame (13), setting in pole setting (12) and the transportation platform (11) of frame (13) corner of rectangle, the vertical setting of pole setting (12), its top and frame (13) rigid coupling, bottom and transportation platform (11) rigid coupling, auto-lock universal wheel (14) are installed to transportation platform (11) bottom.
3. The automatic acquisition device of the beckmann beam deflectometer according to claim 2, wherein: the bracket (4) mainly comprises two straight plates which are distributed in a crossed manner, and the end part of the bracket (4) is in sliding fit with the upright rod (12); the height adjusting piece (5) comprises a lead screw (51) vertically rotatably mounted on the frame body and a force application piece (52) mounted at the top of the lead screw (51), and the lead screw (51) is in threaded connection with the bracket (4).
4. The automatic acquisition device of the beckmann beam deflectometer according to claim 2, wherein: mounting bracket (6) include telescopic link (61), with telescopic link (61) horizontal installation mount pad (62) on transportation platform (11) and connect holder (63) at telescopic link (61) expansion end, holder (63) have elasticity and press from both sides mouth (633), displacement sensor (31) are arranged in elasticity and press from both sides mouth (633).
5. The automatic acquisition device of the beckman beam deflectometer according to claim 4, wherein: the movable end of the telescopic rod (61) is vertically and fixedly connected with a connecting rod (64), the clamping piece (63) comprises a sliding sleeve (631) which is slidably mounted on the connecting rod (64) and a clamping plate (632) which is horizontally and fixedly connected to the sliding sleeve (631), and the elastic clamping opening (633) is formed in the end part, far away from the sliding sleeve (631), of the clamping plate (632); the sliding sleeve (631) is positioned on the connecting rod (64) through a jackscrew.
6. The automatic acquisition device of the beckman beam deflectometer according to claim 5, wherein: the mounting racks (6) are arranged into two groups and are oppositely arranged at two sides of the transportation platform (11); the telescopic rods (61) of the two groups of mounting racks (6) are arranged in a vertically staggered manner.
7. The automatic acquisition device of the beckmann beam deflectometer according to claim 1, wherein: the information monitoring system (3) further comprises a temperature sensor (33) for automatically and continuously acquiring the temperature of the road surface.
8. The automatic acquisition device of the beckmann beam deflectometer according to claim 1, wherein: the information monitoring system (3) further comprises an incremental encoder (35), wherein the incremental encoder (35) is in signal connection with the micro-processing unit (34) and is used for carrying out measurement point pile number setting, time interval setting and logic calculation on data acquired and processed by the micro-processing unit (34).
9. A measuring method using the automatic acquisition device of the beckmann beam deflectometer according to any one of claims 1 to 8, characterized in that: the method comprises the following steps:
checking and maintaining the vehicle condition of the standard vehicle, and aligning the wheel clearance of the rear wheel of the standard vehicle to the position 3-5cm behind the measuring point;
checking each component and a connecting node in the information monitoring system (3);
manually inserting the Beckman beam (2) into a wheel gap of a rear wheel of the standard vehicle, wherein the direction of the Beckman beam (2) is consistent with that of the standard vehicle, and a measuring head of the Beckman beam (2) is positioned 3-5cm in front of the center of the wheel gap;
the position of the positioning auxiliary acquisition vehicle (1) is adjusted, the length and the height of the mounting frame (6) are adjusted, the displacement sensor (31) is mounted on the mounting frame (6), the displacement sensor (31) is in contact with the Beckman beam (2), and the whole information monitoring system (3) is in a state of starting to collect data;
the commander sends a forward command, the standard vehicle advances, the information monitoring system (3) firstly acquires a maximum value, a final value is acquired when the standard vehicle drives out to influence the distance, and the micro-processing unit (34) processes and stores the measured data to complete the measurement of the measuring point;
the Beckman beam (2) is placed and supported at the end part of the bracket (4), the bracket (4) is lifted by utilizing the lead screw (51) to advance the Beckman beam (2), and the Beckman beam moves to the next measuring point along with the front of the auxiliary collecting vehicle (1);
repeating the above processes, continuously and completely detecting the rebound deflection value of the roadbed of the road, and finally processing the output data.
10. The measurement method of the beckman beam deflectometer automatic acquisition device according to claim 9, characterized in that: the data acquisition comprises the steps that a displacement sensor (31) synchronously acquires the rebound deflection value of the road subgrade, a distance measuring sensor (32) monitors the distance between a measuring point and a standard vehicle, and a temperature sensor (33) acquires the air temperature and the road surface temperature during the test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010705288.8A CN111827244A (en) | 2020-07-21 | 2020-07-21 | Automatic acquisition device and measurement method for Beckman beam deflectometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010705288.8A CN111827244A (en) | 2020-07-21 | 2020-07-21 | Automatic acquisition device and measurement method for Beckman beam deflectometer |
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| Publication Number | Publication Date |
|---|---|
| CN111827244A true CN111827244A (en) | 2020-10-27 |
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|---|---|---|---|
| CN202010705288.8A Pending CN111827244A (en) | 2020-07-21 | 2020-07-21 | Automatic acquisition device and measurement method for Beckman beam deflectometer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115325917A (en) * | 2022-08-05 | 2022-11-11 | 民航机场建设工程有限公司 | Airport pavement deflection detection device and detection method |
| CN117213957A (en) * | 2023-08-24 | 2023-12-12 | 湖北建夷检验检测中心有限公司 | Deflection instrument hand-push platform and use method |
-
2020
- 2020-07-21 CN CN202010705288.8A patent/CN111827244A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115325917A (en) * | 2022-08-05 | 2022-11-11 | 民航机场建设工程有限公司 | Airport pavement deflection detection device and detection method |
| CN117213957A (en) * | 2023-08-24 | 2023-12-12 | 湖北建夷检验检测中心有限公司 | Deflection instrument hand-push platform and use method |
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