CN110895139A

CN110895139A - Portable laser cross section instrument

Info

Publication number: CN110895139A
Application number: CN201911328820.2A
Authority: CN
Inventors: 何耀帮; 张智
Original assignee: Hunan Wangxuan Technology Co Ltd
Current assignee: Hunan Wangxuan Technology Co Ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-03-20

Abstract

The invention discloses a portable laser cross section instrument, which comprises a beam support and a host; the beam support comprises a plurality of sections of guide rails which are sequentially and transversely detachably spliced together; the host comprises a sliding seat, a controller and a laser displacement sensor; the sliding seat is movably arranged on the guide rail and moves back and forth along the extending direction of the guide rails, a walking device for promoting the sliding seat to move back and forth is arranged between the sliding seat and the guide rail, and the sliding seat and the guide rail are arranged separately; the controller is arranged on the sliding seat, and the walking device is connected with the controller. This instrument measurement accuracy is high, and degree of automation is high, reduces manual operation error and human cost, can measure the horizontal terminal surface in lane, and the minimum measurement interval can reach 1mm, can be real reaction out the road rut situation to easy operation, operating personnel can use as long as through simple training, and use cost is low, does not need professional vehicle during the test, and ordinary dolly just can carry, and equipment cost is low.

Description

Portable laser cross section instrument

Technical Field

The invention relates to the technical field of test instruments, in particular to a portable laser cross section instrument.

Background

There are two types of instrument for measuring ruts on cross section of asphalt pavement on the market at present, namely a cross section ruler and a vehicle-mounted laser cross section instrument.

Although the cross section ruler has simple structure and low equipment cost, the cross section ruler has the following disadvantages:

1) the measurement accuracy is low, and the error is very large by adopting a steel ruler or a depth gauge for manual reading.

2) The measurement efficiency is low, only manual reading and manual recording can be passed, and a large amount of labor cost is consumed in the test.

3) The cross section ruler is an integral part, the length of the cross section ruler is more than 3.5m, and the cross section ruler cannot be disassembled and is inconvenient to carry.

Although the vehicle-mounted laser cross section instrument has high test precision, high automation degree and high test efficiency, the road surface can be tested in the walking process of the test vehicle, and the vehicle-mounted laser cross section instrument is more suitable for testing large projects of engineering quantity. The vehicle-mounted laser cross section instrument has the following defects:

1) the common rut type laser cross section instrument is characterized in that a fixed laser displacement sensor is arranged on a head or a parking space beam of a special modified test vehicle, the number of the sensors is 13-17 generally, a road surface with an effective width of 3.2m needs to be measured, the distance of a lane cross section is 200mm when the test is carried out, and the real rut depth of a single lane road surface cannot be truly reflected.

2) The equipment cost is high, and more than ten laser sensors and special modified test vehicles are arranged.

3) The use cost is high, and special modified test vehicles need to be used for road test, and professional vehicle drivers need to be equipped.

4) The requirement on operators is high, and professional training is needed for operating the vehicle-mounted laser cross section instrument.

Therefore, there is a need to develop a solution to the above problems.

Disclosure of Invention

In view of the above, the present invention is directed to the defects in the prior art, and the main object of the present invention is to provide a portable laser cross section apparatus, which has the characteristics of high measurement accuracy, high automation degree, and reduced manual operation error and labor cost.

In order to achieve the purpose, the invention adopts the following technical scheme:

a portable laser cross section instrument comprises a beam support and a host; the beam support comprises a plurality of sections of guide rails which are sequentially and transversely detachably spliced together; the host comprises a sliding seat, a controller and a laser displacement sensor; the sliding seat is movably arranged on the guide rail and moves back and forth along the extending direction of the guide rails, a walking device for promoting the sliding seat to move back and forth is arranged between the sliding seat and the guide rail, and the sliding seat and the guide rail are arranged separately; the controller is arranged on the sliding seat, and the walking device is connected with the controller; the laser position sensor is arranged on the sliding seat and connected with the controller.

Preferably, the guide rail comprises an aluminum profile and a rack arranged on the aluminum profile, the walking device comprises a walking driving motor and a first walking gear, the walking driving motor is fixed on the sliding seat and connected with the controller, and the first walking gear is fixed on an output shaft of the walking driving motor and meshed with the rack.

Preferably, the sliding seat is provided with a rotating shaft, a second walking gear is fixed on the rotating shaft, the second walking gear is meshed with the rack, the rotating shaft is connected with a photoelectric encoder, and the photoelectric encoder is connected with the controller.

Preferably, the guide rail and the guide rail are positioned by a bolt and are connected in a locking manner through a quick lock catch.

Preferably, the bottom of the guide rail at the two ends is provided with a support leg.

Preferably, both sides of slide all are provided with spacing sensor, and this spacing sensor is connected with the controller, and correspond, and the outer end that is located the guide rail at both ends all is provided with the limit stop who cooperates with spacing sensor.

Preferably, a plurality of rolling balance limit bearings are arranged on the sliding seat and respectively abut against the front side face and the rear side face of the guide rail.

Preferably, a lithium battery is arranged on the sliding seat and connected with the controller.

Preferably, a WiFi antenna is arranged on the sliding base, and the WiFi antenna is connected with the controller and is in wireless communication connection with the mobile terminal.

Preferably, a handle is arranged at the top of the sliding seat.

Compared with the prior art, the invention has obvious advantages and beneficial effects, and specifically, the technical scheme includes that:

this instrument measurement accuracy is high, and degree of automation is high, reduces manual operation error and human cost, can measure the horizontal terminal surface in lane, and the minimum measurement interval can reach 1mm, can be real reaction out the road rut situation to easy operation, operating personnel can use as long as through simple training, and use cost is low, does not need professional vehicle during the test, and ordinary dolly just can carry, and equipment cost is low.

To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments:

drawings

FIG. 1 is a front view of a preferred embodiment of the present invention;

FIG. 2 is an enlarged partial schematic view of FIG. 1;

fig. 3 is a top view of fig. 2.

The attached drawings indicate the following:

10. cross beam support 11 and guide rail

111. Aluminum profile 112 and rack

12. Bolt 13, quick hasp

14. Supporting leg 15, handle

16. Limit stop 20 and host

21. Slide carriage 22 and controller

23. Laser displacement sensor 24 and walking device

241. Travel driving motor 242 and first travel gear

25. Rotating shaft 26 and second traveling gear

27. Photoelectric encoder 28 and limit sensor

29. Balanced limiting bearing 201 and lithium battery

202. WiFi antenna 203, handle

30. Mobile terminal 40, lane crossing

Detailed Description

Referring to fig. 1 to 3, a specific structure of a preferred embodiment of the present invention is shown, including a beam support 10 and a main frame 20.

The beam support 10 comprises a plurality of sections of guide rails 11, and the plurality of sections of guide rails 11 are sequentially and transversely detachably spliced together; the guide rail 11 comprises an aluminum profile 111 and a rack 112 arranged on the aluminum profile 111. The guide rail 11 and the guide rail 11 are positioned by a bolt 12 and are in locking connection through a quick lock catch 13. Furthermore, the bottom of the guide rail 11 at the two ends is provided with a supporting leg 14, and the top of the guide rail 10 at the two ends is provided with a handle 15; in addition, the beam support 10 is 3.9m in total length and is divided into three sections, each section is 1.3m, and the beam support can be placed in an instrument box and can also be connected with two sections for measuring narrow space pavements.

The main machine 20 comprises a slide carriage 21, a controller 22 and a laser displacement sensor 23; the sliding base 21 is movably arranged on the guide rail 11 and moves back and forth along the extending direction of the multi-section guide rail 11, a walking device 24 for promoting the sliding base 21 to move back and forth is arranged between the sliding base 21 and the guide rail 11, the sliding base 21 and the guide rail 11 are separately arranged, and the transportation host 20 can be independently placed in an instrument box; the controller 22 is arranged on the sliding seat 21, and the walking device 24 is connected with the controller 22; the laser position sensor 23 is arranged on the sliding base 21 and connected with the controller 22, and the measurement elevation range of the laser position sensor 23 is as follows: 0-70mm, laser position sensor 23 measurement resolution: 0.01mm, the measurement accuracy of the laser position sensor 23: 0.1 mm.

Specifically, the traveling device 24 includes a traveling driving motor 241 and a first traveling gear 242, the traveling driving motor 241 is fixed to the carriage 21 and connected to the controller 22, and the first traveling gear 242 is fixed to an output shaft of the traveling driving motor 241 and engaged with the rack 112. The sliding base 21 is provided with a rotating shaft 25, a second walking gear 26 is fixed on the rotating shaft 25, the second walking gear 26 is meshed with the rack 112, the rotating shaft 25 is connected with a photoelectric encoder 27, and the photoelectric encoder 27 is connected with the controller 22. The two sides of the sliding base 21 are both provided with limit sensors 28, the limit sensors 28 are connected with the controller 22, and correspondingly, the outer ends of the guide rails 11 at the two ends are both provided with limit stoppers 16 matched with the limit sensors 28. The sliding base 21 is provided with a plurality of rolling balance limit bearings 29, and the balance limit bearings 29 respectively support against the front side surface and the rear side surface of the guide rail 11. Be provided with lithium cell 201 on the slide 21, this lithium cell 201 is connected with controller 22, and the capacity of lithium cell 201: DC24V, 10AH, can be operated continuously for 8 hours. The slider 21 is provided with a WiFi antenna 202, the WiFi antenna 202 is connected to the controller 22 and is in wireless communication connection with the mobile terminal 30, and the mobile terminal 30 is a tablet computer, a mobile phone, and the like, without limitation. The top of the slide 21 is provided with a handle 203 to facilitate lifting.

Detailed description the working principle of the present embodiment is as follows:

1. and taking the guide rail 11 out of the instrument box, connecting the guide rail 11 according to the direction of a bolt 12 on the end surface of the guide rail 11, and locking and connecting by using a quick lock catch 13 to form the beam bracket 10.

2. The assembled crossbar support 10 is placed on the 1 required roadway cross-section 40.

3. Taking out the main machine 20, placing the main machine on any section of the beam support 10, and enabling the main machine to be close to the limit stop 16 as much as possible; then, the first traveling gear 242 and the second traveling gear 26 of the main body 20 are aligned with the rack 112 of the guide rail 11, and the main body 20 is pushed slightly by hand to confirm whether the gear of the main body 20 is engaged with the rack 112 of the guide rail 10.

4. The main unit 20 power switch is turned on (to ensure the instrument is fully charged before use).

5. The power supply of the mobile terminal 30 (tablet computer or notebook computer) is turned on, and the test software is clicked.

6. And connecting the host 20 through the wireless WIFI on the test software.

7. Software parameters are set, the click test is started, the host 20 starts the walking driving motor 241 to drive the host 20 to run along the direction of the guide rail 11, the running speed is 10cm/s, the walking position distance is measured through the internal photoelectric encoder 26, and the laser displacement sensor 23 on one side synchronously tests the displacement amount relative to the road surface. The test is automatically stopped until the main frame 20 moves to the limit stop 16 of the other section of the beam support 10 or the moving position set in the software.

8. After the test is finished, the software automatically draws a curve of the cross section of the measured lane, and simultaneously analyzes the rutting depth or the pavement damage depth.

9. And storing the test result.

10. When the next end surface needs to be tested, two persons can move the instrument to the next test point in advance through the handles 15 at the two ends of the beam support 10. Repeating the 7-9 test procedures.

11. After all tests are completed, the instrument is disassembled and placed in the instrument box.

The instrument measures the total length of the cross section of the road surface: 3.5m, cross section sampling interval of the road surface: 1-100mm can be set arbitrarily; this instrument adopts cell-phone or panel computer communication to control host computer 20, and automatic data acquisition draws the cross section curve and calculates the rut degree of depth automatically, and the sampling interval can reach 1mm, reaction road cross section size condition that can be real, and the effectual sampling interval of avoiding vehicular cross section appearance is too wide and loses the defect of valid data, full automated control, and measurement accuracy is high, conveniently carries, single measuring time: is < 40 s. The instrument can also measure narrow auxiliary roads and ramp roads, and can replace a three-meter ruler to measure the pavement evenness. The instrument is light in weight (the total weight is less than 35kg, and two persons can easily lift up), and the instrument box placed after disassembly is small in size, can be placed in the tail box behind the trolley, and is convenient to carry.

The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.

Claims

1. A portable laser cross section instrument is characterized in that: comprises a beam bracket and a host; the beam support comprises a plurality of sections of guide rails which are sequentially and transversely detachably spliced together; the host comprises a sliding seat, a controller and a laser displacement sensor; the sliding seat is movably arranged on the guide rail and moves back and forth along the extending direction of the guide rails, a walking device for promoting the sliding seat to move back and forth is arranged between the sliding seat and the guide rail, and the sliding seat and the guide rail are arranged separately; the controller is arranged on the sliding seat, and the walking device is connected with the controller; the laser position sensor is arranged on the sliding seat and connected with the controller.

2. The portable laser cross-section apparatus of claim 1, wherein: the guide rail comprises an aluminum profile and a rack arranged on the aluminum profile, the walking device comprises a walking driving motor and a first walking gear, the walking driving motor is fixed on the sliding seat and connected with the controller, and the first walking gear is fixed on an output shaft of the walking driving motor and meshed with the rack.

3. The portable laser cross-section apparatus of claim 2, wherein: the sliding seat is provided with a rotating shaft, a second walking gear is fixed on the rotating shaft and meshed with the rack, the rotating shaft is connected with a photoelectric encoder, and the photoelectric encoder is connected with the controller.

4. The portable laser cross-section apparatus of claim 1, wherein: the guide rails are positioned by bolts and are connected in a locking manner through quick lock catches.

5. The portable laser cross-section apparatus of claim 1, wherein: the bottom of the guide rail at the two ends is provided with a supporting leg.

6. The portable laser cross-section apparatus of claim 1, wherein: the two sides of the sliding seat are provided with limit sensors which are connected with the controller and correspond to the limit sensors, and the outer ends of the guide rails at the two ends are provided with limit stops matched with the limit sensors.

7. The portable laser cross-section apparatus of claim 1, wherein: the sliding seat is provided with a plurality of balance limit bearings which can roll, and the balance limit bearings are respectively supported on the front side surface and the rear side surface of the guide rail.

8. The portable laser cross-section apparatus of claim 1, wherein: and a lithium battery is arranged on the sliding seat and is connected with the controller.

9. The portable laser cross-section apparatus of claim 1, wherein: and the sliding seat is provided with a WiFi antenna which is connected with the controller and is in wireless communication connection with the mobile terminal.

10. The portable laser cross-section apparatus of claim 1, wherein: the top of the sliding seat is provided with a handle.