A high-precision steel slag pavement structure depth measuring device and method

Abstract

The present application relates to steel slag pavement structure depth measurement technical field, disclose a kind of high-precision steel slag pavement structure depth measurement equipment, including support, drive device one and sand track setting device of installation on support, drive device one is used to drive sand track setting device rotates around a vertical shaft;Sand track setting device includes sand cavity, sand inlet with sand cavity communication, with sand cavity communication opening downward movable sand outlet, with sand cavity inside communication sand pushing device;When movable sand outlet sand, sand pushing device always fills sand cavity with the sand of pushing sand, movable sand outlet can be displaced on a straight line passing through the rotation center of sand track setting device;The present application avoids the influence of manual sand laying method by operator experience and proficiency, also can solve the problem that the measuring precision is poor after sand is pushed out by electric sand laying instrument to obtain a strip track with "sharp head" at the end, so as to greatly improve the accuracy of measurement, wide application scene, simple operation, high test precision.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel slag pavement structure depth measurement, and more particularly to a high-precision steel slag pavement structure depth measurement device and a high-precision steel slag pavement structure depth measurement method. BACKGROUND

[0002] The structure depth of the pavement surface, previously referred to as the texture depth, is an important indicator of pavement roughness, and refers to the average depth of the open pores of the uneven road surface of a certain area, and is mainly used to evaluate the macroscopic roughness, drainage performance and skid resistance of the pavement surface. Using steel slag for road construction is an effective way to large-scale resource utilization of steel slag. With the increasing depth of the resource utilization application technology of steel slag, the steel slag is paved on the road surface due to its rough surface, hard and wear-resistant characteristics, and becomes a conventional use as an anti-skid and wear-resistant layer.

[0003] The "Highway Subgrade and Pavement Field Test Specification" (JTG 3450-2019) provides that the structure depth of the pavement is measured by means of manual sand paving, electric sand paving instrument, pendulum instrument, transverse force coefficient test system and dynamic rotary friction coefficient tester, among which the sand paving method is the most common in the field construction due to its low equipment cost, easy portability and simple operation. The existing sand paving method mainly includes manual sand paving method and electric sand paving instrument sand paving method. The manual sand paving method is manually spread with a circular sand, which is greatly affected by the experience and proficiency of the operator, and different personnel often get test results with large differences, large test error and low test precision. The electric sand paving instrument will get a strip trajectory with a "sharp head" at the end after spreading the sand. Since the length and thickness of the "sharp head" part cannot be accurately measured, the average value is used to determine the paving length, and the measurement precision is poor. In addition, whether the manual sand paving method or the electric sand paving instrument, the sand used is uniform sand with a particle size of 0.15-0.3mm, and the sand cannot fully fill the honeycomb-shaped small pores on the rough surface of the steel slag aggregate wrapped with bitumen during the structure depth test, resulting in a smaller measurement result. SUMMARY

[0004] The present application aims to overcome at least one of the above-mentioned defects of the prior art, and provides a high-precision steel slag pavement structure depth measurement device to solve the technical problem that different personnel spread different amounts of sand, resulting in large differences in test results.

[0005] The technical scheme adopted by the present application is a high-precision steel slag pavement structure depth measuring device, which comprises a support, a driving device one and a sand laying track setting device mounted on the support, wherein the driving device one is used to drive the sand laying track setting device to rotate around a vertical shaft; the sand laying track setting device comprises a sand cavity, a sand inlet communicated with the sand cavity, a movable sand outlet communicated with the sand cavity and opening downward, and a sand pushing device communicated with the inside of the sand cavity; when the movable sand outlet discharges sand, the sand pushing device pushes the remaining sand to always fill the sand cavity, and the movable sand outlet can be displaced on a straight line passing through the rotation center of the sand laying track setting device.

[0006] In the present scheme, the sand laying track setting device is driven to rotate by the driving device one, and the remaining sand is always filled in the sand cavity by the sand pushing device, so that the movable sand outlet can constantly and uniformly discharge sand, thereby the sand laying shape can be controlled with high precision each time, the influence of the experience and proficiency of the operator on the manual sand laying method is avoided, and the measurement accuracy can be greatly improved.

[0007] Further, the sand laying track setting device further comprises a mounting box rotatably connected to the support, the bottom of the mounting box is provided with a long strip-shaped opening passing through the rotation center of the sand laying track setting device, two stoppers movable along the length direction of the opening are arranged at the two ends of the opening, and the two opposite surfaces of the two stoppers and the two side walls of the opening between the two stoppers enclose the movable sand outlet. In this way, the movable sand outlet can be close to or away from the rotation center of the sand laying track setting device, so that a circular, semicircular, annular or semicircular sand laying track can be formed on the road surface during rotation; the mounting box is made of a hard transparent material such as tempered glass.

[0008] Further, the width of the opening of the mounting box is between 0.5-2mm. When the width of the opening is less than 0.5mm, the sand is difficult to discharge due to large discharge resistance, and when the width of the opening is greater than 2mm, the internal sand is easy to overflow, which causes the sand laying track to be irregular, thereby affecting the accuracy of the final calculation value.

[0009] Further, the two stoppers are respectively slidably connected to the opening, two driving devices two are mounted on the mounting box, and the two driving devices two correspondingly drive the two stoppers to move. The driving device two is mainly used to drive the stopper to move linearly, and can be selected from a linear motor and an electric push rod, and the two stoppers can move with high precision through the control of the two driving devices two, so as to improve the precision of the opening size of the movable sand outlet, and further improve the precision of the final calculation result.

[0010] Further, the sand pushing device comprises a pushing member arranged in the mounting box, and a driving device three arranged on the mounting box and used for driving the pushing member to move along the length direction of the mounting box; the side wall of the pushing member, the inner side wall of the mounting box and the side walls of the two stop members jointly form a sand cavity.

[0011] Further, the driving device three is mainly used for driving the pushing member to move linearly, and can be a mechanical structure of an electric push rod or a motor combined with a lead screw, which is a common technology known by those skilled in the art and will not be described in detail herein. The cross section of one stop member is the same as that of the sand cavity, and the cross section area of the other stop member is equal to the sum of the cross section areas of the pushing member, and the size of the stop member with the same cross section as that of the sand cavity can be set as 1 cm in height, 1 cm in length and 0.5 cm in width.

[0012] Further, the support member is a transparent cylindrical barrel structure with an open bottom, and the sand paving track setting device is arranged in the support member. The support member adopts a cylindrical steel frame, and transparent tempered glass is arranged on the side surface and the top surface. The tempered glass seals the remaining surfaces of the main frame except the bottom surface, mainly plays a windproof role, and can further improve the data accuracy of the final calculation.

[0013] Further, a driving rod is rotatably connected to the support member, one end of the driving rod is fixedly connected to the output shaft of the driving device one, and the other end of the driving rod is hingedly connected to the mounting box. The driving device one mainly drives the mounting box to rotate through the driving rod, and a servo motor or the like in the prior art can be selected. The other end of the driving rod is hingedly connected to the mounting box, mainly to provide a certain degree of freedom for the mounting box, so that the bottom of the mounting box, i.e. the movable sand outlet, can be closely attached to the road surface to be measured during rotation.

[0014] Further, a horizontal rod is fixedly arranged on the driving rod, two pressing rods are fixedly arranged at the two ends of the horizontal rod respectively, and the bottom ends of the two pressing rods are hingedly connected to the top ends of the mounting box. The two pressing rods mainly provide pressure to the two ends of the mounting box, so that the two ends of the mounting box can be closely attached to the road surface to be measured during rotation.

[0015] An automatic road surface construction depth testing device comprises a digital central controller, which is electrically connected to the electric control end of the driving device one, the electric control end of the sand pushing device and the electric control end of the driving device two respectively. The digital central controller can be a display plc controller, and the control program of the display plc controller can be pre-inputted with the rotation speed v, the rotation angle a, the moving distance x1 of the stop member, the moving distance x2 of the stop member, the horizontal pushing force K of the pushing member, the area S of the pushing member and the like.

[0016] The present scheme in use, control sand track setting device rotates to the position, through the digital display central controller can directly output the value of the measured road surface structure depth, without moving the whole, so there will be no existing technology in the presence of "sharp head" case, can effectively solve the existing technology in the electric sanding instrument will be sand to expand after a end with "sharp head" track, poor measurement accuracy problem.

[0017] A high-precision steel slag pavement structure depth measurement method, comprising the following steps:

[0018] S1. Clean the impurities on the measured road surface, so that the movable sand outlet can be tightly attached to the measured road surface;

[0019] S2. Control the two stop pieces to move x1 and x2 in the same direction, take the larger value as x2 and the smaller value as x1, and add the sand with particle size of 200-500 mesh through the sand inlet;

[0020] S3. Control the sand track setting device to rotate by α angle, and control the three driving pushers of the driving device to move with a constant force, so that the remaining sand always fills the sand cavity; During this process, the sand in the movable sand outlet is gradually discharged and forms circular, fan-shaped, ring-shaped, fan-ring and other shapes on the measured road surface; The movement distance of the pusher is recorded as y, and the cross section of the pusher is recorded as S. The volume of the sand consumed in this process is calculated by Y and S, that is, Sx y, recorded as V;

[0021] S4. Calculate the structure depth of the measured road surface by the following formula, recorded as TD:

[0022]

[0023] Compared with the prior art, the present application has the following advantages: by driving the sand track setting device to rotate, the remaining sand is pushed by the sand pushing device to always fill the sand cavity, so that the movable sand outlet can constantly and uniformly discharge sand, thereby controlling the sanding shape with high precision each time, avoiding the influence of the operator's experience and proficiency in manual sanding method; An automatic pavement structure depth testing device does not need to be moved as a whole after testing, can directly output the value of the tested pavement structure depth, can solve the problem of poor measurement accuracy that the electric sanding instrument obtains a strip-shaped track with "sharp head" at the end after expanding the sand, thereby greatly improving the measurement accuracy, being suitable for wide application scenarios, simple operation and high testing precision. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the overall structure schematic diagram of the embodiment one of the present application.

[0025] Figure 2 It is the structure schematic diagram of the sand track setting device in the embodiment one of the present application.

[0026] Figure 3 Cross-sectional view of the installation box in the first embodiment of the present application

[0027] Figure 4 Schematic diagram of the overall structure in the second embodiment of the present application.

[0028] In the figure: 1, support, 2, driving device one, 3, sand track setting device, 4, sand cavity, 5, sand inlet, 6, movable sand outlet, 7, sand pushing device, 8, installation box, 9, stopper, 10, driving device two, 11, pushing piece, 12, driving device three, 13, driving rod, 14, horizontal rod, 15, pressing rod, 16, locking assembly, 17, digital central controller, 18, through opening. DETAILED DESCRIPTION

[0029] The drawings of the present application are only used for illustrative description and cannot be understood as limitation to the present application. In order to better illustrate the following embodiments, some components in the drawings will be omitted, enlarged or reduced, and do not represent the actual product size; it is understandable for those skilled in the art that some well-known structures in the drawings and their descriptions can be omitted.

[0030] Embodiment one

[0031] As shown in Figure 1 and 2 , the present scheme discloses a high-precision steel slag pavement structure depth measuring device, which comprises a support 1, a driving device one 2 and a sand track setting device 3 installed on the support 1, the driving device one 2 is used to drive the sand track setting device 3 to rotate around a vertical shaft; the sand track setting device 3 comprises a sand cavity 4, a sand inlet 5 communicating with the sand cavity 4, a movable sand outlet 6 with the opening downward communicating with the sand cavity 4, and a sand pushing device 7 communicating with the inside of the sand cavity 4; when the movable sand outlet 6 discharges sand, the sand pushing device 7 pushes the remaining sand to always fill the sand cavity 4, and the movable sand outlet 6 can displace on a straight line passing through the rotation center of the sand track setting device 3.

[0032] In the present scheme, the sand track setting device 3 is driven to rotate by the driving device one 2, and the remaining sand is always filled in the sand cavity 4 by the sand pushing device 7, so that the movable sand outlet 6 can constantly and uniformly discharge sand, thereby the sanding shape can be controlled with high precision every time, and the influence of the experience and proficiency of the operator on the manual sanding method is avoided.

[0033] The sand paving track setting device 3 further comprises a mounting box 8 rotatably connected to the support 1, the bottom of the mounting box 8 is provided with a long strip-shaped through opening 18 passing through the rotation center of the sand paving track setting device 3, both ends of the through opening 18 are provided with two stoppers 9 capable of moving along the length direction of the through opening 18, and the two opposite surfaces of the two stoppers 9 and the two side walls of the through opening 18 between the two stoppers 9 enclose the movable sand outlet 6. In this way, the movable sand outlet 6 can be close to or away from the rotation center of the sand paving track setting device 3, so that when rotating, a circular, semicircular, annular, semicircular or other shape sand paving track can be formed on the road surface; the mounting box 8 is made of a hard transparent material such as tempered glass, which is convenient for observing the sand content inside the mounting box 8.

[0034] The width of the through opening 18 of the mounting box 8 is between 0.5-2mm. When the width of the through opening 18 is less than 0.5mm, the sand output resistance is large, and it is difficult to output sand; when the width of the through opening 18 is greater than 2mm, the internal sand is easy to overflow, resulting in irregular track formed by the laid sand, thereby affecting the accuracy of the final calculation value.

[0035] The two stoppers 9 are respectively in sliding connection with the through opening 18, and two driving devices two 10 are installed on the mounting box 8, and the two driving devices two 10 correspondingly drive the two stoppers 9 to move. The driving device two 10 is mainly used for driving the stopper 9 to move linearly, and can be selected from a linear motor, an electric push rod and the like, and through the control of the two driving devices two 10, the two stoppers 9 can move with high precision, thereby improving the precision of the opening size of the movable sand outlet 6, and further improving the precision of the final calculation result.

[0036] The sand pushing device 7 comprises a pushing member 11 arranged in the mounting box 8, and a driving device three 12 arranged on the mounting box 8 and used for driving the pushing member 11 to move along the length direction of the mounting box 8; the side wall of the pushing member 11, the inner side wall of the mounting box 8 and the side walls of the two stoppers 9 jointly enclose the sand cavity 4.

[0037] The driving device three 12 is mainly used for driving the pushing member 11 to move linearly, and can be selected from an electric push rod or a mechanical structure combining a motor and a lead screw, which is a technology known to those skilled in the art and will not be described in detail here. The cross section of one of the stoppers 9 is the same as that of the sand cavity 4, and the cross section area of the other stopper 9 is equal to the sum of the cross section areas of the pushing member 11, and the size of the stopper 9 with the same cross section as that of the sand cavity 4 can be set as 1cm in height, 1cm in length and 0.5cm in width.

[0038] The support 1 is a transparent barrel type structure with an open bottom, and the sand laying track setting device 3 is arranged in the support 1. The support 1 adopts a cylindrical steel frame, and transparent tempered glass is arranged on the side and top of the frame. The tempered glass seals the frame except the bottom surface, mainly plays a windproof role, and can further improve the data accuracy of the final measurement.

[0039] The support 1 is rotatably connected with a driving rod 13. One end of the driving rod 13 is fixedly connected with an output shaft of the driving device 2, and the other end is hingedly connected with the mounting box 8. The driving device 2 mainly drives the mounting box 8 to rotate through the driving rod 13. A servo motor or the like in the prior art can be selected. The other end of the driving rod 13 is hingedly connected with the mounting box 8, mainly to provide a certain degree of freedom for the mounting box 8. When rotating, the bottom of the mounting box 8, i.e. the movable sand outlet 6, can be closely attached to the road surface to be measured.

[0040] A horizontal rod 14 is fixedly arranged on the driving rod 13. Two pressing rods 15 are fixedly arranged at the two ends of the horizontal rod 14. The bottom ends of the two pressing rods 15 are hingedly connected with the top ends of the mounting box 8. The two pressing rods 15 mainly provide pressure to the two ends of the mounting box 8, so that when rotating, the two ends of the mounting box 8 can be closely attached to the road surface to be measured.

[0041] The driving rod 13 and the pressing rod 15 are spring telescopic rods. A locking assembly 16 is arranged on the spring telescopic rod. The spring telescopic rod is provided with spring clamps on the inner rod and the outer rod. The rod body is sleeved with a spring between the two spring clamps. The spring telescopic rod is also provided with the locking assembly 16. The locking assembly 16 can be a locking knob which is screw-connected to the outer rod of the telescopic rod. The end of the locking knob is in extrusion and locking with the outer circumferential surface of the inner rod of the telescopic rod. The spring telescopic rod and the locking assembly 16 are known to those skilled in the art, and will not be described in detail here. The locking assembly 16 is used to control the lifting and falling of the sand laying track setting device 3. During transportation or non-testing time, the sand laying track setting device 3 can be lifted by shortening the spring telescopic rod and locked to a higher position by the locking assembly 16. During testing, the locking assembly 16 can be released, and the spring provides vertical downward pressure to ensure that the movable sand outlet 6 is closely attached to the ground.

[0042] As shown in Figure 3 Although the mounting box 8 is designed in a rectangular structure to achieve the scheme, when used for a road surface with a large texture depth, the road surface may be easily stuck due to a large degree of concave-convex. In view of this phenomenon, the mounting box 8 can be designed in a trapezoidal structure (as shown in Figure 3 One side of the trapezoidal structure faces the rotating direction of the mounting box 8. When a position with a large degree of concave-convex is encountered, the slope can play a good guiding role, so that the mounting box 8 can rotate more smoothly. At the same time, the width of the movable sand outlet 6 can be as small as possible under the premise of ensuring smooth sand leakage, which can further improve the accuracy during measurement.

[0043] Embodiment two

[0044] As Figure 3 shown, the embodiment discloses an automatic pavement structure depth testing device, the difference between the embodiment and embodiment one is that the embodiment further comprises a digital central controller 17, the digital central controller 17 is electrically connected with the electric control end of the driving device one 2, the electric control end of the sand pushing device 7 and the electric control end of the driving device two 10 respectively.

[0045] The digital central controller 17 can be a display plc controller, the display plc controller can be pre-inputted with control programs of rotating speed v, rotating angle α, moving distance x1 of the stopper 9, moving distance x2 of the stopper 9, horizontal pushing force K of the pushing piece 11, area S of the pushing piece 11 and the like, the connection between the digital central controller 17 and the electric control end of the driving device one 2, the electric control end of the sand pushing device 7 and the electric control end of the driving device two 10 belongs to the technology known by the person skilled in the art, which will not be described in detail here; the rotating angle α is set in the interval of 0-360°, the rotating speed v should not be too fast when being set, and it should be ensured that the sand flows out of the sand leakage hole and is uniformly pushed out.

[0046] The use steps are specifically as follows:

[0047] Step one: select a road surface to be tested, and use a brush or a dust collector to clean the surface floating soil and debris.

[0048] Step two: place the automatic pavement structure depth testing device on the road surface to be tested, release the locking assembly 16 to make the spring on the spring telescopic rod exert pressure on the sand paving track setting device 3, so that the movable sand outlet 6 is in full contact with the road surface to be tested.

[0049] Step three: input the test parameters such as rotating speed v, rotating angle α, lengths x1 and x2 of the two stoppers 9 moving in the same direction (take x2 as the larger value and x1 as the smaller value), horizontal pushing force K of the pushing piece 11 and cross-sectional area S of the pushing piece 11 in the display plc controller.

[0050] Step four: the display plc controller controls the two driving devices two 10 to make the two stoppers 9 move in the same direction by lengths x1 and x2 (take x2 as the larger value and x1 as the smaller value), at this time, the length of the movable sand outlet 6 is L=x2-x1.

[0051] Step five: inject a sufficient amount of dry and clean homogeneous sand with a particle size of 200-500 mesh (25-75 μm) into the sand cavity 4 through the sand inlet 5.

[0052] Step six: the driving device three 12 applies a constant horizontal thrust K to the pusher 11, so that it pushes the sand to fill the closed space formed by the sand cavity 4 cavity and the surface to be measured, so that it does not overflow from the movable sand outlet 6.

[0053] Step seven: the display plc controller drives the driving rod 13 to rotate through the driving device one 2, thereby driving the installation box 8 to rotate, and rotates to the set angle α at the set rotation speed v, while the display plc controller automatically records the displacement y of the pusher 11 driven by the driving device three 12, at this time, the volume of sand used in this sand paving process is V=Sx y.

[0054] Step eight: calculate the construction depth of the surface to be measured using the following formula:

[0055]

[0056] Step nine: then connect the display plc controller with the printer to print out the TD value of this time; the test result can be directly printed out, after the end, the installation box 8 is lifted and locked upward through the locking assembly 16, and is moved to the next surface to be measured for measurement.

[0057] In use, the control sand paving track setting device 3 is rotated to the position, and the value of the construction depth of the surface to be measured can be directly output through the digital display central controller 17, without moving the whole, so that the "sharp head" phenomenon in the prior art does not exist, and the problem of poor measurement accuracy caused by the "sharp head" at the end of the track after the sand is pushed out by the electric sand paving instrument in the prior art can be effectively solved.

[0058] Embodiment three

[0059] This embodiment discloses a high-precision steel slag pavement construction depth measurement method based on embodiment one, comprising the following steps:

[0060] S1. Clean the impurities on the road surface to be measured, so that the movable sand outlet 6 can be closely attached to the road surface to be measured;

[0061] S2. Control the two stop pieces 9 to move in the same direction by x1 and x2, respectively, take the larger value as x2 and the smaller value as x1, and add the sand with particle size of 200-500 mesh through the sand inlet 5;

[0062] S3. Control the sand track setting device 3 to rotate an angle a, and control the driving device three 12 to drive the pusher 11 to move at a constant force, so that the residual sand fills the sand cavity 4 all the time; during the process, the sand in the movable sand outlet 6 is gradually discharged and forms circular, fan-shaped, ring-shaped, fan ring and other shapes of tracks with different radii on the road surface to be measured; the moving distance of the pusher 11 is recorded as y, the cross section of the pusher 11 is recorded as S, and the volume of the sand consumed during the process is calculated by Y and S, that is, Sx y, recorded as V;

[0063] S4. Calculate the construction depth of the road surface to be measured by the following formula, recorded as TD:

[0064]

[0065] Through this test method, the sand track is more accurate each time, and there is no "sharp head" situation, which can effectively avoid the problems of large error and low precision caused by manual sanding method and electric sanding instrument, and the sand particle size used in the scheme is smaller, which can fully fill the honeycomb-shaped micro pores on the rough surface of the slag aggregate wrapped with bitumen, and the precision of the measurement result is higher.

[0066] The two stoppers 9 can be completely converged below the driving rod 13, and this state is x1=0, x2=0, which is the initial state of the road surface construction depth testing equipment.

[0067] In order to make the purpose, technical scheme and advantages of the present application more clear and obvious, the following will be described in detail with several actual sanding examples:

[0068] Example one: when the sand to be measured needs to be spread into a circle (assuming that the radius of the circle is 100mm), the operation steps are as follows:

[0069] S1. Select a road surface to be measured, and use a brush or a dust collector to clean the surface of floating soil and debris.

[0070] S2. Place the automatic road surface construction depth testing equipment on the road surface to be measured, release the locking assembly 16, and make the spring on the spring telescopic rod exert pressure on the sand track setting device 3, so that the movable sand outlet 6 is in complete contact with the road surface to be measured.

[0071] S3. Set the rotation speed v=1 rad / s, the rotation angle a=360°, x1=0, x2=100mm, the thrust K=0.5N, and the area S of the pusher 11=1cm2 in the display plc controller.

[0072] S4. Keep one stopper 9 in initial state x1=0, drive the other stopper 9 to move by drive device 2 to make x2=100mm. At this time, the length of sand leakage hole is L=x2-x1=100mm, i.e. the radius of the circle formed by the spread sand is 100mm.

[0073] S5. Inject a sufficient amount of dry and clean homogeneous sand with particle size of 200-500 mesh (25-75μm) into sand cavity 4 through sand inlet 5.

[0074] S6. Drive device 3 12 applies a constant horizontal thrust of 0.5N to pushing member 11 to push sand to fill the closed space formed by sand cavity 4 and the surface to be measured, so that the sand does not overflow from movable sand outlet 6.

[0075] S7. The display plc controller drives drive rod 13 to rotate by drive device 1 2, thereby driving mounting box 8 to rotate at a set rotation speed of 1 rad / s to a set angle of 360°, while the display plc controller automatically records the displacement y of pushing member 11 driven by drive device 3 12. The volume of sand used in this sand spreading process is V=Sx y=100 ymm3.

[0076] S8. Calculate the construction depth of the surface to be measured using the following formula:

[0077]

[0078] The calculation result is accurate to 0.02mm.

[0079] S9. Then connect the display plc controller to the printer to print out the TD value of this time; the test result can be directly printed out, and after the end, the mounting box 8 is lifted upward and locked by locking assembly 16, and moved to the next surface to be measured for measurement.

[0080] Example 2: When the surface to be measured needs to spread the sand into a circular ring (assuming the outer diameter of the circular ring is 100mm and the inner diameter is 50mm), the operation steps are as follows:

[0081] S1. Select a surface to be measured, and use a brush or a dust collector to clean the surface of floating soil and debris.

[0082] S2. Place the automatic road construction depth testing device on the surface to be measured, release the locking assembly 16 to allow the spring on the spring telescopic rod to exert pressure on the sand spreading track setting device 3, so that the movable sand outlet 6 is in complete contact with the surface to be measured.

[0083] S3. Set the rotation speed v = 1 rad / s, the rotation angle a = 360°, the movement distance of one stopper 9 x1 = 50 mm, the movement distance of another stopper 9 x2 = 100 mm, the horizontal thrust of the stopper 9 K = 0.5 N, and the area of the stopper 9 S = 1 cm2 in the display PLC controller.

[0084] S4. The display PLC controller drives the two stoppers 9 to move x1 = 50 mm and x2 = 100 mm respectively by the two driving devices 10, at this time, the length of the sand leakage hole is L = x2 - x1 = 50 mm, that is, the outer diameter of the sand spread into a ring is 100 mm and the inner diameter is 50 mm.

[0085] S5. Inject a sufficient amount of dry and clean homogeneous sand with a particle size of 200-500 mesh (25-75 μm) into the sand cavity 4 through the sand inlet 5.

[0086] S6. The driving device 3 applies a constant horizontal thrust of 0.5 N to the pusher 11 to push the sand to fill the closed space composed of the sand cavity 4 and the surface to be measured, so that it does not overflow from the movable sand outlet 6.

[0087] S7. The display PLC controller drives the driving rod 13 to rotate by controlling the driving device 1, thereby driving the installation box 8 to rotate, and rotates to the set angle of 360° at the set rotation speed of 1 rad / s, while the display PLC controller automatically records the displacement y (unit: mm) of the pusher 11 under the push of the driving device 3 during the rotation of the movable sand outlet 6 from 0° to 360°. At this time, the volume of the sand used in this sand spreading process is V = S x y = 100 y mm3.

[0088] S8. Calculate the construction depth of the surface to be measured by the following formula:

[0089]

[0090] The calculation result is accurate to 0.02 mm.

[0091] S9. Then connect the display PLC controller with the printer to print out the TD value of this time; the test result can be directly printed out, and after the end, the installation box 8 is lifted upward and locked by the locking assembly 16, and moved to the next surface to be measured for measurement.

[0092] Example Three: When the surface to be measured needs to spread the sand into a quarter circle (assuming the outer diameter of the circle is 100 mm), the operation steps are as follows:

[0093] S1. Select a surface to be measured, and use a brush or a dust collector to clean the surface of floating soil and debris.

[0094] S2. Place the automated pavement texture depth testing device on the road surface to be measured, release the locking assembly 16 to allow the spring on the spring telescopic rod to exert pressure on the sand track setting device 3, so that the movable sand outlet 6 is in full contact with the road surface to be measured.

[0095] S3. Set the rotation speed v = 1 rad / s, the rotation angle a = 90°, the movement distance x1 of one stopper 9 = 0, the movement distance x2 of the other stopper 9 = 100 mm, the horizontal thrust K = 0.5 N, and the area S of the pusher 11 = 1 cm2 in the display plc controller.

[0096] S4. The movement distance x1 of one stopper 9 = 0, and the movement distance x2 of the other stopper 9 = 100 mm. At this time, the length of the movable sand outlet 6 is L = x2 - x1 = 100 mm, i.e. the sand is spread into a quarter circle with a radius of 100 mm.

[0097] S5. Inject a sufficient amount of dry, clean, and homogeneous sand with a particle size of 200-500 mesh (25-75 μm) into the sand cavity 4 through the sand inlet 5.

[0098] S6. The driving device three 12 applies a constant horizontal thrust of 0.5 N to the pusher 11, so that it pushes the sand to fill the closed space composed of the sand cavity 4 cavity and the road surface to be measured, so that it does not overflow from the movable sand outlet 6.

[0099] S7. The display plc controller controls the driving device one 2 to drive the driving rod 13 to rotate, thereby driving the installation box 8 to rotate, and rotates to the set angle of 90° at the set rotation speed of 1 rad / s, while the display plc controller automatically records the displacement y (unit: mm) of the pusher 11 under the push of the driving device three 12 during the rotation of the movable sand outlet 6 from 0° to 90°. At this time, the volume of sand used in this sanding process is V = S × y = 100 ymm3.

[0100] S8. Calculate the texture depth of the road surface to be measured using the following formula:

[0101]

[0102] The calculation result is accurate to 0.02 mm.

[0103] S9. Then connect the display plc controller to the printer to print out the TD value of this time; the test result can be directly printed out, and after the end, the installation box 8 is lifted upward and locked by the locking assembly 16, and moved to the next road surface to be measured for measurement.

[0104] Example 4: When the road surface to be measured needs to spread the sand into a quarter of a circular ring (assuming the outer diameter of the circular ring is 100 mm, and the inner diameter is 50 mm), the operation steps are as follows:

[0105] S1. Select a road surface to be measured, and use a brush or a vacuum cleaner to clean the surface of floating soil and debris.

[0106] S2. Place the automatic road surface texture depth testing device on the road surface to be measured, release the locking assembly 16, and allow the spring on the spring telescopic rod to exert pressure on the sand spreading track setting device 3, so that the movable sand outlet 6 is in full contact with the road surface to be measured.

[0107] S3. In the display plc controller, set the rotation speed v = 1 rad / s, the rotation angle a = 90°, x1 = 50 mm, x2 = 100 mm, the thrust K = 0.5 N, and the area S of the pusher 11 = 1 cm2.

[0108] S4. Drive device two 10 to drive one stopper 9 to move x1 = 50 mm, and drive device two 10 to drive the other stopper 9 to move x2 = 100 mm. At this time, the length of the movable sand outlet 6 is L = x2 - x1 = 50 mm, i.e. the sand is spread into a quarter of a circular ring with an outer diameter of 100 mm and an inner diameter of 50 mm.

[0109] S5. Inject a sufficient amount of dry, clean, and homogeneous sand with a particle size of 200-500 mesh (25-75 μm) into the sand cavity 4 through the sand inlet 5.

[0110] S6. Drive device three 12 to apply a constant horizontal thrust of 0.5 N to the pusher 11, so that it pushes the sand to fill the closed space formed by the sand cavity 4 and the road surface to be measured, so that it does not overflow from the movable sand outlet 6.

[0111] S7. The display plc controller controls drive device one 2 to drive the drive rod 13 to rotate, thereby driving the mounting box 8 to rotate, at a set rotation speed of 1 rad / s to a set angle of 90°. At the same time, the display plc controller automatically records the displacement y (unit: mm) of the pusher 11 under the push of drive device three 12 during the rotation of the movable sand outlet 6 from 0° to 90°. At this time, the volume of sand used in this sand spreading process is V = S x y = 100y (mm3).

[0112] S8. Calculate the texture depth of the road surface to be measured using the following formula:

[0113]

[0114] The calculation result is accurate to 0.02 mm.

[0115] S9. After that, the display PLC controller is connected with the printer to print out the TD value; the test result can be directly printed out, and after the end, the installation box 8 is lifted and locked upward through the locking assembly 16, and is moved to the next surface to be measured for measurement.

[0116] Obviously, the above embodiments of the present application are only examples for clearly illustrating the technical solutions of the present application, and are not intended to limit the specific embodiments of the present application. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the claims of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A high-precision steel slag pavement construction depth measuring device, characterized by: The application relates to a sanding track setting device, which comprises a support (1), a driving device I (2) and a sanding track setting device (3) installed on the support (1), wherein the driving device I (2) is used for driving the sanding track setting device (3) to rotate around a vertical shaft. The sanding track setting device (3) comprises a sand cavity (4), a sand inlet (5) communicated with the sand cavity (4), a movable sand outlet (6) communicated with the sand cavity (4) and opening downward, and a sand pushing device (7) communicated with the inside of the sand cavity (4); when the movable sand outlet (6) discharges sand, the sand pushing device (7) pushes the residual sand to always fill the sand cavity (4); the movable sand outlet (6) can be displaced on a straight line passing through the rotation center of the sanding track setting device (3). The sanding track setting device (3) further comprises a mounting box (8) rotatably connected to the support (1), the bottom of the mounting box (8) is provided with a long-strip-shaped through opening (18) passing through the rotation center of the sanding track setting device (3), the two ends of the through opening (18) are provided with two stoppers (9) capable of moving along the length direction of the through opening (18), and the two opposite surfaces of the two stoppers (9) and the two side walls of the through opening (18) between the two stoppers (9) surround the movable sand outlet (6).

2. The high-precision steel slag pavement construction depth measuring device according to claim 1, characterized in that: The width of the movable sand outlet (6) is between 0.5-2mm.

3. The high-precision steel slag pavement construction depth measuring device according to claim 1, characterized in that: The sand pushing device (7) comprises a pushing member (11) arranged in the mounting box (8) and a driving device III (12) installed on the mounting box (8) and used for driving the pushing member (11) to move along the length direction of the mounting box (8); the side wall of the pushing member (11), the inner side wall of the mounting box (8) and the side walls of the two stoppers (9) jointly surround the sand cavity (4).

4. A high-precision steel slag pavement construction depth measuring device according to any one of claims 1-3, characterized in that: The two stoppers (9) are respectively slidably connected to the through opening (18), two driving devices II (10) are installed on the mounting box (8), and the two driving devices II (10) correspondingly drive the two stoppers (9) to move.

5. The high-precision steel slag pavement construction depth measuring device according to claim 1, characterized in that: The support (1) is a transparent round barrel type structure with an open bottom, and the sanding track setting device (3) is arranged in the support (1).

6. The high-precision steel slag pavement construction depth measuring device according to claim 1, characterized in that: A driving rod (13) is rotatably connected to the support (1), one end of the driving rod (13) is fixedly connected to the output shaft of the driving device I (2), and the other end of the driving rod (13) is hingedly connected to the mounting box (8).

7. A high precision steel slag pavement profile depth measuring apparatus according to claim 6, wherein: A horizontal rod (14) is fixed to the driving rod (13), two pressing rods (15) are respectively fixed to the two ends of the horizontal rod (14), and the bottom ends of the two pressing rods (15) are respectively hingedly connected to the top ends of the mounting box (8).

8. An automated pavement profile depth testing apparatus having the apparatus of claim 4, wherein: A digital central controller (17) is further arranged, and the digital central controller (17) is electrically connected with the electric control ends of the driving device I (2), the sand pushing device (7) and the driving device II (10).

9. The measuring method of the high-precision steel slag pavement construction depth measuring apparatus according to claim 3, characterized in that: The application further comprises the following steps: S1. cleaning impurities on the road surface to be tested, so that the movable sand outlet (6) can be closely attached to the road surface to be tested; S2. controlling the two stoppers (9) to move in the same direction by x1 and x2, taking the larger value as x2 and the smaller value as x1, and adding sand with a particle size of 200-500 meshes into the inside through the sand inlet (5). S3. Control the sand track setting device (3) to rotate an angle of α, and control the driving device three (12) to drive the pusher (11) to move, so that the residual sand always fills the sand cavity (4); In this process, the sand in the movable sand outlet (6) is gradually discharged and forms a circular, fan-shaped, ring-shaped or fan-ring-shaped track on the road surface to be measured; The moving distance of the pusher (11) is recorded as y, the cross section of the pusher (11) is recorded as S, and the volume of the sand consumed in this process is calculated by Y and S, that is, SxY, recorded as V; S4. Calculate the construction depth of the road surface to be measured by the following formula, recorded as TD: TD= 。

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