CN213580566U - High-precision laser detection device for coarse aggregate needle flaky particles - Google Patents
High-precision laser detection device for coarse aggregate needle flaky particles Download PDFInfo
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- CN213580566U CN213580566U CN202022875206.2U CN202022875206U CN213580566U CN 213580566 U CN213580566 U CN 213580566U CN 202022875206 U CN202022875206 U CN 202022875206U CN 213580566 U CN213580566 U CN 213580566U
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Abstract
The utility model discloses a coarse aggregate needle slice granule high accuracy laser detection device, including length measurement unit, signal processing unit and the control unit, length measurement unit passes through screw fixed connection with the signal processing unit, the outside parcel of signal processing unit has corrosion resistant plate, the top of signal processing unit is provided with the plastics handle, the signal processing unit passes through the electric wire and is connected with the control unit. The utility model discloses when survey the maximum length and the thickness of coarse aggregate, the step of artifical reading calculation has been saved, through adjusting putting of gathering materials on the slide rail, the removal activity slider carries out laser rangefinder, but signal processing unit automatic generation data, can set for simultaneously and gather materials "length-thickness ratio" restraint scope, engineering and scientific research work suitable for different demands, the cooperation is used pilot lamp indicating function, degree of automation is high, detection efficiency has been improved, and laser detection's output length unit can be accurate to 0.01mm, it is high to detect the accuracy.
Description
Technical Field
The utility model relates to a road building material's survey technical field specifically is a high accuracy laser detection device of needle slice granule of coarse aggregate.
Background
In road engineering, aggregate is a common paving material, and is a kind of aggregate which plays a role in skeleton and filling in a mixture and can be divided into coarse aggregate and fine aggregate according to the particle size, and the aggregate with the particle size of more than 4.75mm is generally specified as coarse aggregate, such as broken stone and pebble; the aggregate with the particle size of less than 4.75mm is fine aggregate, such as machine-made sand, stone chips and natural sand, and the needle-shaped particles in the coarse aggregate are typical harmful particles, and are easy to break off in the construction process due to the slender or flat shape, so that the aggregate gap is enlarged, the mixture is not compact, and the early damage of a pavement is caused, therefore, the content of the needle-shaped particles is one of the conventional and important indexes for controlling the quality of the aggregate.
The current method for testing the needle-shaped content is a vernier caliper method adopted in Highway engineering aggregate test regulation (JTG E42-2005), namely, crushed stones are weighed and pass through a 4.75mm sieve, particles which are close to a cube shape are selected by visual inspection, the maximum length and the maximum thickness of the residual aggregates which possibly belong to the needle-shaped particles are measured one by the vernier caliper, and if the length-thickness ratio is more than 3, the particles are needle-shaped; and calculating the percentage of the mass of the needle-shaped particles in the total mass of the sample according to the recorded statistical results to serve as the content of the needle-shaped particles.
However, in practical use, the following problems exist in this method: 1. the aggregate has irregular appearance, and the measuring and calculating process is complicated; 2. the method adopts a particle-by-particle detection mode, so that the psychology of operators is easy to fluctuate, human factors have large influence on test data, and the detection data have deviation; 3. the specification stipulates that the number of samples detected each time is not less than 100, and two parallel tests need to be carried out, so that the time consumption is long, the workload of data recording is large, and the accuracy cannot be ensured.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a coarse aggregate needle slice granule high accuracy laser detection device is in order to solve the problem that provides in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a coarse aggregate needle slice granule high accuracy laser detection device, includes length measurement unit, signal processing unit and the control unit, length measurement unit passes through screw fixed connection with the signal processing unit, the outside parcel of signal processing unit has stainless steel plate, the top of signal processing unit is provided with the plastics handle, the signal processing unit passes through the electric wire and is connected with the control unit.
Preferably, the length measuring unit comprises a graduated scale, a slide rail, a limit baffle, a movable slide block, a reflecting baffle and a laser range finder, wherein the division value of the graduated scale is 0.1mm, the rear surface of the graduated scale is fixedly installed on the front surface of the slide rail, the bottom of the limit baffle is fixedly connected with the top of the slide rail, the movable slide block is slidably connected with the slide rail, and the effective working width of the limit baffle and the effective working width of the movable slide block are kept consistent.
Preferably, laser range finder horizontal installation is at length measuring unit's front end lateral wall, and laser range finder is located the bottom of slide rail, laser range finder's transmission port position keeps flushing with limit baffle, reflection baffle fixed mounting is in the bottom of movable slider, and the laser direction of reflection baffle and laser range finder transmission is perpendicular.
Preferably, the signal processing unit comprises a laser signal processor and a power supply, and the laser signal processor is connected with the laser range finder through a data transmission line.
Preferably, the control unit comprises a power switch, a key, a display screen, a red indicator light and a green indicator light, and the control unit is used for inputting an operation instruction and displaying a measurement result.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses when survey the maximum length and the thickness of coarse aggregate, the step of artifical reading calculation has been saved, through adjusting putting of gathering materials on the slide rail, remove movable slider and carry out laser rangefinder, signal processing unit can automatic generation data, can set for simultaneously and gather materials "length-thickness ratio" restraint range (as 3/1, 2/1, 5/1), engineering and scientific research work suitable for different demands, the cooperation is used pilot lamp indicating function, degree of automation is high, detection efficiency is improved, and laser detection's output length unit can be accurate to 0.01mm, it is high to detect the accuracy, stop device has been realized, laser rangefinder, the integration of parts such as data control unit and pilot lamp is used, good stability, and easy and simple to handle, the needle slice content detection efficiency of coarse aggregate has been improved.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the working principle of the control unit of the present invention.
In the figure: 1. a length measuring unit; 2. a signal processing unit; 3. a control unit; 4. a graduated scale; 5. a slide rail; 6. a limit baffle; 7. a movable slide block; 8. a reflective baffle; 9. a laser range finder; 10. a laser signal processor; 11. a power source; 12. a plastic handle; 13. a stainless steel plate; 14. a power switch; 15. pressing a key; 16. a display screen; 17. a red indicator light; 18. a green indicator light; 19. an electric wire; 20. and a data transmission line.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides an embodiment: the utility model provides a high accuracy laser detection device of needle sheet granule of coarse aggregate, includes length measurement unit 1, signal processing unit 2 and the control unit 3, and length measurement unit 1 passes through screw fixed connection with signal processing unit 2, and the outside parcel of signal processing unit 2 has corrosion resistant plate 13, and the top of signal processing unit 2 is provided with plastics handle 12, and signal processing unit 2 passes through electric wire 19 and is connected with the control unit 3.
The utility model discloses when survey the maximum length and the thickness of coarse aggregate, the step of artifical reading calculation has been saved, through adjusting putting of gathering materials on the slide rail, the removal activity slider carries out laser rangefinder, but signal processing unit automatic generation data, can set for simultaneously and gather materials "length-thickness ratio" restraint scope (as 3/1, 2/1, 5/1), be applicable to the engineering and the scientific research work of different demands, the cooperation is used pilot lamp indicating function, degree of automation is high, detection efficiency is improved, and laser detection's output length unit can be accurate to 0.01mm, it is high to detect the accuracy.
Please refer to fig. 1, the length measuring unit 1 includes a graduated scale 4, a slide rail 5, a limit baffle 6, a movable slider 7, a reflective baffle 8 and a laser range finder 9, the graduated scale 4 has a graduation value of 0.1mm, the rear surface of the graduated scale 4 is fixedly mounted with the front surface of the slide rail 5, the bottom of the limit baffle 6 is fixedly connected with the top of the slide rail 5, the movable slider 7 is slidably connected with the slide rail 5, the limit baffle 6 keeps consistent with the effective working width of the movable slider 7, the laser range finder 9 is horizontally mounted on the front side wall of the length measuring unit 1, the laser range finder 9 is located at the bottom of the slide rail 5, the emitting port of the laser range finder 9 is kept flush with the limit baffle 6, the reflective baffle 8 is fixedly mounted at the bottom of the movable slider 7, the reflective baffle 8 is perpendicular to the laser direction emitted by the laser range finder 9, the signal processing unit 2 includes a laser signal processor 10 and a power, the laser signal processor 10 is connected with the laser range finder 9 through a data transmission line 20.
This kind of coarse aggregate needle slice granule high accuracy laser detection device is 0.1mm through the division value of the scale 4 that sets up for check laser range finder 9's accuracy, the degree of accuracy is higher.
Please refer to fig. 1 and 2, the control unit 3 includes a power switch 14, a key 15, a display screen 16, a red indicator light 17 and a green indicator light 18, the control unit 3 is used for inputting an operation instruction and displaying a measurement result, the control unit 3 further includes a control board and an analog-to-digital converter, a signal detected by the laser range finder 9 is input to the control board through the laser signal processor 10 and the analog-to-digital converter, a calculation result is output through the display screen 16 by the control board, and a next operation and related experimental data are prompted.
The high-precision laser detection device for the coarse aggregate needle flake particles is used for overall operation of a control device through a set power switch 14, a key 15 is used for inputting an operation instruction, such as data zero clearing and setting of a standard value of 'length-thickness ratio', a red indicator light 17 and a green indicator light 18 are connected with a control panel, the two indicator lights are both in an off state before detection is completed, and when the control panel judges that the coarse aggregate particles are needle flakes, the red indicator light 17 is on; when it is determined that the coarse aggregate particles are not in the needle-like form, the green indicator light 18 is on.
The working principle is as follows: when the device is used, a power switch 14 is turned on, the 'length-thickness ratio' standard value of the coarse aggregate is set, the aggregate is placed on a slide rail 5 of a length measuring unit 1 during working, the surface of one side of the aggregate is tightly attached to a limiting baffle 6, the other side of the aggregate is fixed through a movable slide block 7, a laser range finder 9 emits laser to a reflecting baffle 8 and completes laser receiving, a laser signal processor 10 senses the length of a signal and transmits the signal to a control unit 3, and the obtained length data is displayed on a display screen 16; the maximum length and the maximum thickness of the aggregate are measured by adjusting the placement of the aggregate, the control panel automatically processes data, when the measured value of the length-thickness ratio is greater than a standard value, the coarse aggregate particles are judged to be needle-shaped, and at the moment, the red indicator light 17 is on; when the measured value of the length-thickness ratio is smaller than the standard value, the coarse aggregate particles are judged to be not in a needle shape, the green indicator light 18 is turned on, after the single aggregate detection is finished, the data is cleared through the key 15, the steps are repeated, and the power switch 14 is turned off after all the aggregate detection is finished.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (5)
1. The utility model provides a coarse aggregate needle slice granule high accuracy laser detection device, includes length measuring unit (1), signal processing unit (2) and the control unit (3), its characterized in that: the length measuring unit (1) is fixedly connected with the signal processing unit (2) through screws, a stainless steel plate (13) is wrapped on the outer side of the signal processing unit (2), a plastic handle (12) is arranged at the top of the signal processing unit (2), and the signal processing unit (2) is connected with the control unit (3) through an electric wire (19).
2. The high-precision laser detection device for the coarse aggregate needle-shaped particles according to claim 1, characterized in that: length measurement unit (1) includes scale (4), slide rail (5), limit baffle (6), activity slider (7), reflecting baffle (8) and laser range finder (9), the division value of scale (4) is 0.1mm, the rear surface of scale (4) and the front surface fixed mounting of slide rail (5), the bottom of limit baffle (6) and the top fixed connection of slide rail (5), activity slider (7) and slide rail (5) sliding connection, limit baffle (6) keep unanimous with the effective working width of activity slider (7).
3. The high-precision laser detection device for the coarse aggregate needle-shaped particles according to claim 2, characterized in that: laser range finder (9) horizontal installation is at the front end lateral wall of length measurement unit (1), and laser range finder (9) are located the bottom of slide rail (5), the transmission mouth position of laser range finder (9) keeps flushing with limit baffle (6), reflection baffle (8) fixed mounting is in the bottom of movable slide block (7), and reflection baffle (8) are perpendicular with the laser direction of laser range finder (9) transmission.
4. The high-precision laser detection device for the coarse aggregate needle-shaped particles according to claim 2, characterized in that: the signal processing unit (2) comprises a laser signal processor (10) and a power supply (11), and the laser signal processor (10) is connected with the laser range finder (9) through a data transmission line (20).
5. The high-precision laser detection device for the coarse aggregate needle-shaped particles according to claim 1, characterized in that: the control unit (3) comprises a power switch (14), a key (15), a display screen (16), a red indicator lamp (17) and a green indicator lamp (18), and the control unit (3) is used for inputting an operation instruction and displaying a measurement result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022875206.2U CN213580566U (en) | 2020-12-02 | 2020-12-02 | High-precision laser detection device for coarse aggregate needle flaky particles |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022875206.2U CN213580566U (en) | 2020-12-02 | 2020-12-02 | High-precision laser detection device for coarse aggregate needle flaky particles |
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| Publication Number | Publication Date |
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| CN213580566U true CN213580566U (en) | 2021-06-29 |
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| CN202022875206.2U Active CN213580566U (en) | 2020-12-02 | 2020-12-02 | High-precision laser detection device for coarse aggregate needle flaky particles |
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