Urban road and traffic pavement skid resistance detection device and test method thereof

Abstract

The invention relates to the field of road surface detection equipment, in particular to an urban road and traffic road surface anti-skid performance detection device and a test method thereof.The urban road and traffic road surface anti-skid performance detection device comprises a supporting cylinder, a positioning frame and an adjusting cylinder, the positioning frame is fixed to the outer side of the supporting cylinder, and the adjusting cylinder is vertically arranged in the supporting cylinder in a sliding mode; a core rod is vertically and rotatably arranged in the middle of the adjusting cylinder, a mounting seat is arranged at the bottom end of the core rod, a flattening plate is arranged on the bottom side of the mounting seat, an auxiliary gear ring is arranged outside the bottom end of the adjusting cylinder, a guide frame extending in the radial direction of the core rod is fixed to the bottom end of the core rod, and a screw is rotatably arranged at the bottom of the guide frame. The screw is used for driving the mounting seat to drive the flattening plate to rotate and simultaneously translate and expand outwards at a constant speed in the radial direction so as to support the flattening plate to pave a sand layer to form a regular circular sand cake, compared with manual operation, the problem that the sand layer is oval or the edge is irregular due to uneven force is avoided, the paving range of the sand layer is accurately controlled, and the measurement sensitivity is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of road surface detection equipment, in particular to a city road and traffic road surface anti-skid performance detection device and a testing method thereof. BACKGROUND

[0002] The construction depth is one of the important indicators for measuring the road surface anti-skid performance, and the road surface microtexture and macrostructure can be understood by measuring the road surface construction depth. Larger construction depth means better roughness of the road surface, which can provide more friction for the vehicle tires, thereby effectively reducing the occurrence of dangerous situations such as vehicle skidding and side slipping in rainy or other slippery conditions, and ensuring driving safety.

[0003] During the road construction process, the road surface construction depth is detected by using the manual sanding method regularly, so that whether the road construction meets the design requirements can be found in time, so as to adjust and improve the construction technology, ensure the construction quality, guide the road surface design and construction, and ensure that the completed road surface has good anti-skid performance. And in the subsequent use process of the road surface, the construction depth is detected by using the manual sanding method regularly, so that the change of the road surface anti-skid performance in the long-term use process can be grasped in time. With the repeated action of the vehicle load and the erosion of the natural environment, the construction depth of the road surface will gradually decrease, and the anti-skid performance will gradually decrease. Through continuous monitoring, the time when the road surface needs to be maintained or repaired can be determined, and appropriate measures such as road milling, re-paving, etc. are taken in time to restore the anti-skid performance of the road surface and prolong the service life of the road surface.

[0004] The manual sanding method is that the road surface of the to-be-detected area is manually cleaned by using a brush, then a 25ml sand filling cylinder is filled with sand and poured on the to-be-detected area to form a sand pile, a push plate with rubber sheet on the bottom surface is repeatedly rotated and spread from inside to outside, the sand is slightly pushed into the concave-convex gap of the road surface, and the sand is spread into a circle as much as possible, and the surface should not leave floating residual sand. The diameters of the two perpendicular directions of the spread circular sand surface are measured by using a steel ruler, and the average value is calculated to obtain the road surface construction depth. The manual sanding method relies on the hand to push the push plate, and the force and speed are difficult to keep uniform, which easily leads to irregular sand layer spreading shape, such as oval, irregular edge, etc., resulting in large detection data error, and another tool is needed to pre-clean the to-be-detected area, which is not convenient to use. SUMMARY

[0005] The purpose of the present invention is to provide an urban road and traffic pavement anti-skid performance detection device and a testing method thereof in order to solve the above problems. A screw-driven mounting seat is used to drive the push plate to rotate and translate outward at a uniform speed in the radial direction to support the push plate to spread the sand layer to form a regular circular sand cake. Compared with manual operation, it avoids the problem of elliptical sand layer or uneven edges caused by uneven force, and reduces the diameter measurement error; the auxiliary gear ring and the auxiliary gear can be separated by pulling up the movable handle, and the outward expansion action during the rotation of the push plate can be adjusted. Pulling up the auxiliary gear ring can release the synchronous outward movement function of the push plate, thereby locking the circumferential rotation distance of the push plate to accurately control the sand layer paving range and improve the measurement sensitivity. See the following for details.

[0006] To achieve the above objectives, the present invention provides the following technical solutions: The present invention provides a device for detecting the anti-skid performance of urban roads and traffic pavements, comprising a support tube, a positioning frame, and an adjustment tube. The positioning frame is fixed to the outside of the support tube, and the adjustment tube is vertically slidably arranged inside the support tube. A core rod is vertically rotated in the middle of the adjustment tube, and a mounting seat is provided at the bottom end of the core rod. A push plate is provided on the bottom side of the mounting seat. An auxiliary gear ring is provided on the outside of the bottom end of the adjustment tube. A guide frame extending radially along the core rod is fixed to the bottom end of the core rod, a screw is rotatably provided at the bottom of the guide frame, an auxiliary gear engaging with the auxiliary gear ring is fixed to the outer end of the screw, the mounting seat is slidably engaged with the guide frame along the length direction of the guide frame, and the screw is threadedly engaged with the mounting seat to support the mounting seat and the push plate to rotate under the support of the adjustment cylinder through the core rod, and the screw is supported by the gear ring to rotate, and the screw is used to drive the mounting seat and the push plate to rotate and translate outward.

[0007] Preferably, the positioning frame includes two groups of support plates symmetrically fixed on both sides of the support tube, the bottom ends of the two groups of support plates expand outward and extend horizontally to form tread plates for abutting the ground, a reinforcement ring sleeved on the outside of the support tube is provided between the two groups of support plates, and a connecting plate for installing the positioning reinforcement ring is fixed on the inner side of the support plate.

[0008] Preferably, the support tube is a vertically penetrating regular polygonal cylinder, the adjustment tube vertically slides and adapts to the inner wall of the support tube, and bearing seat holes are provided on the inner sides of the upper and lower ends of the adjustment tube, and thrust bearings supporting the rotation of the core rod are provided inside the two groups of bearing seat holes.

[0009] Preferably, a driving ring gear is fixed to the top of the core rod, an operating shaft is rotatably provided on the outer side of the top of the adjusting cylinder, a driving gear that engages with the driving ring gear is coaxially fixed to the outside of the operating shaft, a turntable is fixed to the outer end of the operating shaft, and a crank extending outward is rotatably provided at the eccentric portion of the outer end surface of the turntable.

[0010] As preferred, the bottom end of the adjusting cylinder is externally provided with a vertically extending sliding groove, the top end of the auxiliary gear ring is fixed with a plurality of radially distributed spoke rods, the top end of the spoke rods is fixed with a synchronizing ring which is sleeved outside the sliding groove, and the middle part of the synchronizing ring is penetrated with a sliding hole which is adapted to the sliding groove.

[0011] As preferred, the top side of the synchronizing ring is provided with a retaining spring which is tightly pressed to the top of the sliding groove, the retaining spring is used to downwardly press the synchronizing ring to maintain the engagement state of the auxiliary gear ring and the auxiliary gear, the top end of the adjusting cylinder is externally fixed with a pull handle, the outside of the synchronizing ring is provided with a movable handle which extends upwardly below the pull handle, the movable handle is a U-shaped bent rod structure with the opening facing downwardly, and the two ends of the movable handle are respectively rotationally matched with the front and rear sides of the synchronizing ring.

[0012] As preferred, the mounting seat comprises a constraint cylinder in the form of a rectangular square cylinder structure, the screw rod penetrates through the constraint cylinder and is threadedly matched with the constraint cylinder, the top end of the constraint cylinder is fixed with an H-shaped guide block which is slidably matched with the guide frame, the two sides of the constraint cylinder are penetrated with a limiting groove, and the inside of the constraint cylinder is fixed with a vertically extending supporting rod.

[0013] As preferred, the bottom surface of the flattening plate is provided with a disc-shaped rubber sheet, and the upper side of the flattening plate is provided with a hanger which is an arc-shaped structure extending downwardly, and the two sides of the flattening plate are respectively fixed with a mounting shaft which is rotationally matched with the hanger.

[0014] As preferred, the top surface of the flattening plate is provided with a cleaning sheet which is densely covered with bristles, the hanger penetrates through the constraint cylinder along the limiting groove, and the top part of the hanger is vertically penetrated with a central hole which accommodates the penetration of the supporting rod, the outside of the supporting rod is sleeved with a return spring which is tightly pressed against the hanger, the return spring is used to upwardly tightly press the hanger to maintain the tightly pressing of the flattening plate against the bottom surface of the mounting seat, the top surface of the cleaning sheet is provided with a reinforcing hole, and the bottom end of the supporting rod is fixed with a reinforcing end block which is detachably embedded in the reinforcing hole.

[0015] The testing method of the urban road and traffic pavement anti-skid performance detection device comprises the following steps: S1, cleaning preparation of the to-be-tested area: downwardly pushing the hanger to drive the flattening plate to move downwardly to separate the flattening plate from the bottom surface of the mounting seat, the hanger moves downwardly while compressing the return spring to remove the tightly pressing and supporting effect of the mounting seat on the flattening plate, at this time, the flattening plate is rotated under the support of the hanger to flip up and down along the axis of the mounting shaft to flip one side of the cleaning sheet to the downward state, and then the hanger is loosened to move upwardly under the support of the return spring, at this time, the mounting seat is tightly pressed to one side of the rubber sheet, and the flipping action of the flattening plate is completed; S2, pre-cleaning of the to-be-tested area: the whole device is moved to the to-be-tested area through the positioning support, the adjusting cylinder supports the core rod to drive the mounting seat and the pushing plate to press against the road surface, then the downward pressing force of the adjusting cylinder on the core rod is controlled by manually holding the lifting handle, thereby the downward pressing force of the mounting seat on the pushing plate is controlled in real time, at this time the rotating handle is rotated to drive the rotating disc to rotate, the driving gear is driven to rotate by the driving gear ring, thereby the bottom mounting seat and the pushing plate are driven to rotate as a whole, and the road surface of the to-be-tested area is swept by the bristles of the pushing plate; S3, automatic outward expansion of the pushing plate: in the rotating process of the adjusting cylinder supporting the core rod, the mounting seat and the pushing plate rotate with the core rod, the auxiliary gear on the screw rod at the bottom end of the core rod is engaged with the auxiliary gear ring, at this time the auxiliary gear is in a state of continuous rotation, thereby the screw rod is driven to rotate by the auxiliary gear, and the mounting seat and the pushing plate are driven to gradually expand and translate outward as a whole while the core rod rotates, so that the cleaning sheet automatically expands outward during the rotating sweeping process to clean the road surface of the to-be-tested area; S4, sand measuring and spreading: 25ml of sand measured by the sand measuring cylinder is poured on the road surface of the to-be-tested area to form a sand pile, then the pushing plate is turned upside down with the rubber sheet facing downward, at this time the pushing plate is moved above the sand pile, the downward pressing force of the pushing plate is controlled in real time by the lifting handle, then the core rod is driven to rotate by the rotating handle, and the mounting seat and the pushing plate are driven to rotate by the core rod, so that the sand pile is pushed outward and spreaded flat; S5, position control of the pushing plate: in the rotating process of the pushing plate following the core rod, the pushing plate gradually expands outward under the driving of the rotating screw rod, when the pushing plate needs to stop the synchronous outward expansion, the active handle is pulled upward while holding the lifting handle, so that the auxiliary gear ring is pulled upward to drive the radial rod and the auxiliary gear ring to move upward, the auxiliary gear ring is separated from the auxiliary gear, at this time the pushing plate and the mounting seat are moved to the fixed circumferential position and do circumferential motion under the support of the core rod to realize sand measuring and spreading, when the spreading range of the pushing plate needs to be adjusted, the active handle is released to reset the auxiliary gear ring by the restoring spring, so that the auxiliary gear ring is engaged with the auxiliary gear again, at this time the screw rod can be driven to rotate by the auxiliary gear to drive the pushing plate and the mounting seat to move outward again, so that the spreading range and the pressing force of the pushing plate are controlled in real time.

[0016] The beneficial effects are as follows: 1. The auxiliary gear is arranged at the end of the screw rod, the auxiliary gear ring is engaged during the whole rotating process of the core rod, the mounting seat is driven to rotate by the screw rod, and the pushing plate is driven to translate outward at a constant speed in the radial direction while rotating, so that the pushing plate is supported to spread the sand layer to form a regular circular sand cake, compared with manual operation, the problems of sand layer oval or irregular edge caused by uneven force are avoided, and the diameter measurement error is reduced; 2. The auxiliary gear ring can be separated from the auxiliary gear by pulling the movable handle upwards, the expansion of the push plate during rotation can be adjusted, the auxiliary gear ring is pulled to release the synchronous outward movement of the push plate, thereby locking the circumferential rotation distance of the push plate, the sand layer paving range is accurately controlled, and the measurement sensitivity is improved; 3. The push plate is designed on both sides, the locking state of the push plate by the mounting seat is quickly released by pressing the hanger, the upper and lower positions of the rubber sheet and the cleaning sheet are switched by supporting the push plate through the hanger, the rubber layer is quickly switched between the rubber layer and the cleaning function, no additional tools are needed, and the bristles gradually expand outward during the cleaning process to automatically sweep impurities to the measured area, thereby improving the uniformity of the bristles during the cleaning process. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0018] Figure 1 is the front view structure diagram of the present application; Figure 2 is the three-dimensional structure diagram of the present application; Figure 3 is the structure split diagram of the present application; Figure 4 is the structure split diagram of the positioning frame of the present application; Figure 5 is the three-dimensional structure diagram of the core rod of the present application; Figure 6 is the structure split diagram of the core rod of the present application; Figure 7 is the structure split diagram of the mounting seat of the present application; Figure 8 is the three-dimensional structure diagram of the adjusting cylinder of the present application; Figure 9 is the three-dimensional structure diagram of the present application in another direction; Figure 10 is the top view structure diagram of the present application; Figure 11 is the right view structure diagram of the present application.

[0019] The following explains the reference signs: 1, support cylinder; 2, positioning frame; 201, support plate; 201a, tread piece; 202, reinforcing ring; 203, connecting piece; 3, adjusting cylinder; 301, bearing seat hole; 302, operating shaft; 303, drive gear; 304, turntable; 305, crank; 306, sliding groove; 307, pull handle; 4, core rod; 401, guide frame; 402, screw; 403, auxiliary gear; 404, drive gear ring; 5, mounting seat; 501, constraint cylinder; 501a, limiting groove; 502, guide block; 503, brace; 503a, reinforcing end block; 504, return spring; 6, push plate; 601, rubber sheet; 602, cleaning sheet; 602a, brush; 603, reinforcing hole; 604, mounting shaft; 605, hanger; 605a, center hole; 7, auxiliary gear ring; 701, spoke; 702, synchronous ring; 702a, sliding hole; 703, retaining spring; 704, movable handle. DETAILED DESCRIPTION

[0020] To make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described in detail below. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present application.

[0021] Reference Figures 1-11 As shown in the drawings, the present application discloses a kind of urban road and traffic pavement skid resistance detection device, including support cylinder 1, positioning frame 2 and adjusting cylinder 3, positioning frame 2 is fixed to the outer side of support cylinder 1, adjusting cylinder 3 is vertically slidingly arranged in support cylinder 1, adjusting cylinder 3 middle part is vertically rotatably arranged with core rod 4, and the bottom end of core rod 4 is provided with mounting seat 5, the bottom side of the mounting seat 5 is provided with push plate 6, the bottom end of adjusting cylinder 3 is provided with auxiliary gear ring 7, push plate 6 is disc-shaped structure, and the diameter of push plate 6 is 50mm; The bottom end of the core rod 4 is fixed with a guide frame 401 extending in the radial direction thereof, the bottom of the guide frame 401 is rotatably provided with a screw rod 402, the outer end of the screw rod 402 is fixed with an auxiliary gear 403 engaging with the auxiliary gear ring 7, so that in the rotation process of the core rod 4, the auxiliary gear ring 7 drives the auxiliary gear 403 to rotate the screw rod 402, the mounting seat 5 is slidingly matched with the guide frame 401 in the length direction of the guide frame 401, and the screw rod 402 is threadedly matched with the mounting seat 5, so as to support the mounting seat 5 and the push flat plate 6 to rotate under the support of the adjusting cylinder 3, and at the same time, the screw rod 402 is supported to rotate by the gear ring, the mounting seat 5 and the push flat plate 6 are driven to rotate and translate outward by the screw rod 402, the position adjustment action of the push flat plate 6 in the axial direction of the screw rod 402 is realized, so that when the push flat plate 6 is used to flatten the sand pile, the push flat plate 6 can be driven to rotate and automatically expand outward by the screw rod 402, and the precision effect of the edge of the flattened sand cake is improved.

[0022] As an optional embodiment, the positioning frame 2 includes two groups of support plates 201 symmetrically fixed to the two sides of the supporting cylinder 1, the bottom ends of the two groups of support plates 201 outwardly expand and horizontally extend to form stepping pieces 201a abutting to the ground, facilitating stepping to support the equipment to be stably placed on the road surface of the to-be-tested area, a reinforcing ring 202 is arranged between the two groups of support plates 201 and is sleeved to the outside of the supporting cylinder 1, connecting pieces 203 are fixed to the inner sides of the support plates 201 and are used to mount and position the reinforcing ring 202, the support stability of the two groups of support plates 201 is improved, the supporting cylinder 1 is a vertical through positive polygonal cylinder, the adjusting cylinder 3 vertically slides and fits the inner wall of the supporting cylinder 1, and the supporting cylinder 1 can support the adjusting cylinder 3 to be adjusted in height, so as to facilitate the user to change the height position of the adjusting cylinder 3 to adjust the downward pressure of the lower push flat plate 6 on the road surface or sand layer, the inner sides of the upper and lower end portions of the adjusting cylinder 3 are both provided with bearing seat holes 301, the inner sides of the two groups of bearing seat holes 301 are both provided with thrust bearings supporting the rotation of the core rod 4, the vertical stability of the core rod 4 and the adjusting cylinder 3 is ensured, the top end of the core rod 4 is fixed with a driving gear ring 404, the top end of the adjusting cylinder 3 is rotatably provided with an operation shaft 302, the outer side of the operation shaft 302 is coaxially fixed with a driving gear 303 engaging with the driving gear ring 404, the outer end of the operation shaft 302 is fixed with a rotating disc 304, and the outer end surface of the rotating disc 304 is eccentrically rotatably provided with an outwardly extending crank 305, so that the rotating disc 304 can be driven to rotate by rotating the crank 305, the driving gear 303 and the driving gear ring 404 are engaged, the core rod 4 is driven to rotate, and the lower mounting seat 5 and the push flat plate 6 are driven to rotate and spread by the core rod 4 under the support of the adjusting cylinder 3; The outer bottom end of the adjusting cylinder 3 is provided with a vertically extending sliding groove 306, the sliding groove 306 is a regular polygon in cross section, the top end of the auxiliary gear ring 7 is fixed with a plurality of radially distributed radials 701, the top end of the plurality of radials 701 is fixed with a synchronizing ring 702 which is sleeved outside the sliding groove 306, the middle part of the synchronizing ring 702 is penetrated by a sliding hole 702a which is matched with the sliding groove 306, so as to ensure that the synchronizing ring 702 can rotate synchronously with the adjusting cylinder 3, the top side of the synchronizing ring 702 is provided with a retaining spring 703 which is tightly pressed into the top of the sliding groove 306, the retaining spring 703 is used to downwardly abut the synchronizing ring 702 to maintain the meshing state of the auxiliary gear ring 7 and the auxiliary gear 403, the top end of the adjusting cylinder 3 is fixed with a pull handle 307, the outer side of the synchronizing ring 702 is provided with a movable handle 704 which extends upwardly below the pull handle 307, the movable handle 704 is a U-shaped bent rod structure with an opening downwardly, and the movable handle 704 is rotatably connected to the front and rear sides of the synchronizing ring 702 respectively, the operator holds the pull handle 307 and grasps the movable handle 704; When it is needed to release the driving state of the screw rod 402 and the mounting seat 5, the movable handle 704 is tightly held upwardly to pull the synchronizing ring 702 upwardly, the radials 701 are used to support the upward movement of the auxiliary gear ring 7 below, so as to release the meshing state of the auxiliary gear ring 7 and the auxiliary gear 403, at this time, the core rod 4 drives the mounting seat 5 and the push plate 6 to rotate in a constant circle; When the operator releases the movable handle 704, the retaining spring 703 pushes the synchronizing ring 702 downwardly, so as to move the auxiliary gear ring 7 downwardly to mesh with the auxiliary gear 403, when the core rod 4 drives the mounting seat 5 and the push plate 6 to rotate, the auxiliary gear 403 drives the screw rod 402 to rotate, so as to drive the mounting seat 5 and the push plate 6 to slide along the length direction of the guide frame 401, so as to realize the continuous variable-diameter rotation of the mounting seat 5 and the push plate 6; The constant circle rotation and the variable-diameter rotation of the push plate 6 can be adjusted by operating the movable handle 704, specifically, when the movable handle 704 does not pull the auxiliary gear ring 7 upwardly, the push plate 6 is driven by the screw rod 402 to rotate in a variable-diameter manner under the support of the mounting seat 5, which is suitable for cleaning the to-be-tested area by the cleaning sheet 602 and using in the initial stage of sand pile spreading; when the movable handle 704 pulls the auxiliary gear ring 7 upwardly, the auxiliary gear ring 7 is separated from the auxiliary gear 403, at this time, the push plate 6 rotates in a constant circle, which is suitable for the circumferential trimming action in the later stage of sand layer spreading.

[0023] In addition, the mounting base 5 comprises a constraint cylinder 501 in a rectangular square cylinder structure, the screw rod 402 penetrates through the constraint cylinder 501 and is in threaded cooperation with the constraint cylinder 501, the constraint cylinder 501 is fixed with a guide block 502 in an H shape at the top end, the guide block 502 is in sliding cooperation with the guide frame 401, the sliding stability of the mounting base 5 and the guide frame 401 is ensured, the constraint cylinder 501 penetrates through a limiting groove 501a at both sides, and the constraint cylinder 501 is internally fixed with a vertically extending supporting rod 503, the push plate 6 is provided with a disc-shaped rubber sheet 601 at the bottom surface, the thickness of the rubber sheet 601 is 1.5 mm, the hanger 605 is provided above the push plate 6, the hanger 605 is in an arc structure extending downward, the mounting shaft 604 rotatingly cooperating with the hanger 605 is fixed at both sides of the push plate 6, the hanger 605 can support the push plate 6 to rotate in the hanger 605 through the mounting shaft 604, the two sides of the push plate 6 are exchanged, the cleaning sheet 602 is provided at the top surface of the push plate 6, the surface of the cleaning sheet 602 is densely covered with bristles 602a, the hanger 605 penetrates through the constraint cylinder 501 along the limiting groove 501a, and the hanger 605 is vertically penetrated through a center hole 605a accommodating the supporting rod 503, and the supporting rod 503 is in clearance cooperation with the center hole 605a, the reset spring 504 abutting against the hanger 605 is sleeved outside the supporting rod 503, the reset spring 504 is used for tightly supporting the hanger 605 upward to keep the push plate 6 abutting against the bottom surface of the mounting base 5, so that the position stability of the push plate 6 is kept, the reinforcing hole 603 is provided at the center of the top surface of the cleaning sheet 602, the reinforcing end block 503a separably embedded in the reinforcing hole 603 is fixed at the bottom end of the supporting rod 503, and the structural stability of the abutting position of the push plate 6 and the mounting base 5 is further increased.

[0024] The application further discloses a testing method of the urban road and traffic pavement anti-skid performance detection device. S1, cleaning preparation of a to-be-detected area: the hanger 605 is pushed downward, the push plate 6 is driven to move downward to separate the push plate 6 from the bottom surface of the mounting base 5, the hanger 605 is moved downward at the same time to compress the reset spring 504, the abutting and supporting effect of the mounting base 5 and the push plate 6 is removed, at this time, the push plate 6 is rotated under the support of the hanger 605 to be flipped up and down along the axis of the mounting shaft 604, so that one side of the cleaning sheet 602 is flipped to a downward state, then the hanger 605 is released, the hanger 605 is moved upward to reset under the support of the reset spring 504, at this time, the mounting base 5 abuts against one side of the rubber sheet 601, and the flipping action of the push plate 6 is completed; S2, pre-cleaning of the to-be-tested area: the whole device is supported by the positioning frame 2 to move to the to-be-tested area, the adjusting cylinder 3 supports the core rod 4 to drive the mounting seat 5 and the push plate 6 to press against the road surface, then the pull handle 307 is manually held to control the downward pressing force of the adjusting cylinder 3 on the core rod 4, so as to control the downward pressing force of the mounting seat 5 on the push plate 6 in real time, at this time, the rotating handle 305 drives the rotating disc 304 to rotate, the drive gear 303 drives the drive gear ring 404 to rotate, and then the supporting core rod 4 drives the bottom mounting seat 5 and the push plate 6 to rotate as a whole, and the brush 602a of the push plate 6 rotates to clean the road surface of the to-be-tested area; S3, automatic expansion of the push plate 6: during the rotation of the adjusting cylinder 3 supporting the core rod 4, the mounting seat 5 and the push plate 6 rotate with the core rod 4, and the auxiliary gear 403 on the screw rod 402 at the bottom end of the core rod 4 is engaged with the auxiliary gear ring 7, at this time, the auxiliary gear 403 is in a state of continuous rotation, and then the auxiliary gear 403 drives the screw rod 402 to rotate, so as to drive the mounting seat 5 and the push plate 6 to gradually expand and translate outward as a whole during the rotation of the core rod 4, so that the cleaning sheet 602 automatically expands outward during the rotating cleaning process to clean the road surface of the to-be-tested area; S4, sand spreading and flattening: 25ml of sand measured by the sand measuring cylinder is poured on the road surface of the to-be-tested area to form a sand pile, then the push plate 6 is turned upside down to the state that the rubber sheet 601 faces downward, at this time, the push plate 6 is moved above the sand pile, the pull handle 307 is used to control the downward pressing force of the push plate 6 in real time, then the rotating handle 305 drives the core rod 4 to rotate, the core rod 4 supports the mounting seat 5 and the push plate 6 to rotate, so as to push the sand pile outward to spread and flatten; The formula for calculating the depth of construction TD is: In the formula, D is the diameter (mm) of the sand layer after flattening, and V is the volume (25cm³) of the sand layer.

[0025] Given the volume V of the sand is 25cm³, it is brought into the formula , to obtain .

[0026] The numerator is calculated , and the formula becomes .

[0027] Taking π≈3.1416, we have , and finally we obtain .

[0028] The formula meets the calculation principle of the road surface surface structure depth, and meets the provisions of "T0962-2008 Manual Sand Paving Method for Measuring Road Surface Structure Depth" in "Highway Subgrade and Pavement Field Test Regulations" (JTG3450-2019), and is used for quantifying the roughness of the road surface and evaluating the anti-skid performance.

[0029] S5, position control of the pushing plate 6: during the rotation of the pushing plate 6 following the core rod 4, the pushing plate 6 gradually expands outward under the rotation driving of the screw rod 402; when the pushing plate 6 needs to stop the synchronous outward expansion action, the movable handle 704 is pulled upward while holding the lifting handle 307, so as to pull the synchronous ring 702 to drive the radial rod 701 and the auxiliary gear ring 7 to move upward, and the auxiliary gear ring 7 is separated from the auxiliary gear 403 by compressing the retaining spring 703; at this time, the pushing plate 6 and the sliding mounting seat 5 are moved to a fixed circumferential position, and the pushing plate 6 realizes the sand paving under the support of the core rod 4; when it is necessary to adjust the paving range of the pushing plate 6, the movable handle 704 is loosened to reset the synchronous ring 702 by using the retaining spring 703, so as to re-engage the auxiliary gear ring 7 with the auxiliary gear 403; at this time, the auxiliary gear 403 can drive the screw rod 402 to rotate to drive the pushing plate 6 and the mounting seat 5 to move outward again, so as to realize real-time control of the paving range and pressure of the pushing plate 6.

[0030] By setting the auxiliary gear 403 at the end of the screw rod 402, the auxiliary gear ring 7 is engaged to rotate during the overall rotation of the core rod 4, and then the screw rod 402 drives the mounting seat 5 to drive the pushing plate 6 to uniformly translate radially at a constant speed while rotating, so as to support the pushing plate 6 to form a regular circular sand cake, which avoids the problems of oval sand layer or irregular edge caused by uneven force in manual operation, and reduces the diameter measurement error. By pulling the movable handle 704 upward, the auxiliary gear ring 7 can be separated from the auxiliary gear 403, the outward expansion action of the pushing plate 6 during rotation can be adjusted, the synchronous outward movement function of the pushing plate 6 can be released by pulling the auxiliary gear ring 7, so as to lock the circumferential rotation distance of the pushing plate 6, and the sand paving range can be accurately controlled to improve the measurement sensitivity. The pushing plate 6 is designed in double sides, the mounting seat 5 can be quickly released from the locking state of the pushing plate 6 by pressing the hanger 605, and the rubber sheet 601 and the cleaning sheet 602 can be switched in up-down position by supporting the pushing plate 6 to flip through the hanger 605, so as to quickly switch between the rubber layer paving and the cleaning function of the bristles 602a, without the need for additional tools, and the bristles 602a gradually expand outward during the cleaning process to automatically sweep the impurities to the outside of the to-be-measured area, improving the coverage uniformity of the bristles 602a during the cleaning process.

[0031] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A device for detecting the anti-skid performance of urban roads and traffic pavements, characterized by: It comprises a support tube (1), a positioning frame (2) and an adjustment tube (3), wherein the positioning frame (2) is fixed to the outside of the support tube (1), the adjustment tube (3) is vertically slidably arranged inside the support tube (1), a core rod (4) is vertically rotated in the middle of the adjustment tube (3), a mounting seat (5) is provided at the bottom end of the core rod (4), a push plate (6) is provided at the bottom side of the mounting seat (5), and an auxiliary gear ring (7) is provided on the outside of the bottom end of the adjustment tube (3); A guide frame (401) extending radially thereof is fixed to the bottom end of the core rod (4), a screw rod (402) is rotatably provided at the bottom of the guide frame (401), an auxiliary gear (403) meshing with the auxiliary gear ring (7) is fixed to the outer end of the screw rod (402), the mounting seat (5) is slidably engaged with the guide frame (401) along the length direction of the guide frame (401), and the screw rod (402) is threadedly engaged with the mounting seat (5), so that the mounting seat (5) and the push plate (6) are supported by the core rod (4) to rotate under the support of the adjustment cylinder (3), and the screw rod (402) is used to support the rotation of the screw rod (402), and the screw rod (402) is used to drive the mounting seat (5) and the push plate (6) to rotate and translate outward.

2. The device for detecting the anti-skid performance of urban roads and traffic pavements according to claim 1, characterized in that: The positioning frame (2) comprises two groups of support plates (201) symmetrically fixed on both sides of the support tube (1), the bottom ends of the two groups of support plates (201) expand outward and extend horizontally to form a tread plate (201a) for contacting the ground, a reinforcement ring (202) sleeved on the outside of the support tube (1) is provided between the two groups of support plates (201), and a connecting plate (203) for mounting the positioning reinforcement ring (202) is fixed on the inner side of the support plate (201).

3. The anti-skid performance testing device for urban roads and traffic pavement according to claim 2, characterized in that: The support cylinder (1) is a vertically penetrating regular polygonal cylinder, the adjustment cylinder (3) is vertically slidably adapted to the inner wall of the support cylinder (1), and bearing seat holes (301) are provided on the inner sides of both upper and lower ends of the adjustment cylinder (3), and thrust bearings for supporting the rotation of the core rod (4) are provided inside the two groups of bearing seat holes (301).

4. The device for detecting the anti-skid performance of urban roads and traffic pavements according to claim 3, characterized in that: A driving gear ring (404) is fixed to the top end of the core rod (4), an operating shaft (302) is rotatably provided on the outer side of the top end of the regulating cylinder (3), a driving gear (303) meshing with the driving gear ring (404) is coaxially fixed to the outside of the operating shaft (302), a turntable (304) is fixed to the outer end of the operating shaft (302), and a crank (305) extending outward is rotatably provided at an eccentric portion of the outer end surface of the turntable (304).

5. The device for detecting the anti-skid performance of urban roads and traffic pavements according to claim 1, characterized in that: A vertically extending sliding groove (306) is provided on the outside of the bottom end of the adjusting cylinder (3); a plurality of spokes (701) distributed and gathered upward are fixed to the top end of the auxiliary gear ring (7); a synchronization ring (702) sleeved on the outside of the sliding groove (306) is fixed to the top end of the plurality of spokes (701); a sliding hole (702a) is passed through the middle of the synchronization ring (702) and is slidably adapted to the sliding groove (306).

6. The device for detecting the anti-skid performance of urban roads and traffic pavements according to claim 5, characterized in that: The top side of the synchronizer ring (702) is provided with a retaining spring (703) which is pressed against the top of the sliding groove (306). The retaining spring (703) is used to press the synchronizer ring (702) downward to maintain the meshing state of the auxiliary gear ring (7) and the auxiliary gear (403). A lifting handle (307) is fixed to the outer side of the top of the adjustment cylinder (3). The outer side of the synchronizer ring (702) is provided with a movable handle (704) which extends upward to the bottom of the lifting handle (307). The movable handle (704) is a U-shaped bent rod structure with an opening facing downward, and the two ends of the movable handle (704) are respectively rotatably engaged with the front and rear sides of the synchronizer ring (702).

7. The device for detecting the anti-skid performance of urban roads and traffic pavements according to claim 6, characterized in that: The mounting seat (5) comprises a restraining tube (501) of a rectangular square tube structure, the screw (402) passes through the restraining tube (501) and is threadedly engaged with the restraining tube (501), an H-shaped guide block (502) is fixed to the top of the restraining tube (501), the guide block (502) is slidably engaged with the guide frame (401), limiting grooves (501a) pass through both sides of the restraining tube (501), and a vertically extending support rod (503) is fixed inside the restraining tube (501).

8. The device for detecting the anti-skid performance of urban roads and traffic pavements according to claim 7, characterized in that: A disc-shaped rubber sheet (601) is provided on the bottom surface of the push plate (6), and a hanger (605) is provided above the push plate (6). The hanger (605) is an arc-shaped structure extending downward, and mounting shafts (604) that rotatably cooperate with the hanger (605) are fixed on both sides of the push plate (6).

9. The device for detecting the anti-skid performance of urban roads and traffic pavements according to claim 8, characterized in that: The top surface of the push plate (6) is provided with a cleaning sheet (602), and the surface of the cleaning sheet (602) is densely covered with bristles (602a). The hanger (605) passes through the constraint cylinder (501) along the limiting groove (501a), and the top of the hanger (605) is vertically penetrated with a center hole (605a) for accommodating the support rod (503) to pass through. The outside of the support rod (503) is provided with a return spring (504) that presses against the hanger (605). The return spring (504) is used to push the hanger (605) upward to keep the push plate (6) pressed against the bottom surface of the mounting seat (5). A reinforcement hole (603) is provided in the center of the top surface of the cleaning sheet (602), and a reinforcement end block (503a) that can be detachably embedded in the reinforcement hole (603) is fixed to the bottom end of the support rod (503).

10. The testing method of the anti-skid performance testing device for urban roads and traffic pavement according to claim 9, characterized in that: The following steps are involved: S1. Preparation for cleaning the test area: Push the hanger (605) downward to drive the push plate (6) to move downward to separate it from the bottom surface of the mounting seat (5). When the hanger (605) moves downward, the return spring (504) is compressed to release the support between the mounting seat (5) and the push plate (6). At this time, the push plate (6) is rotated under the support of the hanger (605) so that it is turned up and down along the axis of the mounting shaft (604) to turn one side of the cleaning sheet (602) to a downward state, and then the hanger (605) is released. The return spring (504) is used to support the hanger (605) to move upward and reset. At this time, the mounting seat (5) is pressed against one side of the rubber sheet (601), completing the turning action of the push plate (6); S2, pre-cleaning of the area to be tested: the positioning frame (2) supports the device to move as a whole to the area to be tested, the adjusting cylinder (3) supports the core rod (4) to drive the mounting seat (5) and the push plate (6) to press against the road surface, and then manually hold the lifting handle (307) to control the downward pressing force of the adjusting cylinder (3) on the core rod (4), thereby controlling the downward pressing force of the mounting seat (5) on the lower push plate (6) in real time, and at this time, turning the crank (305) drives the turntable (304) to rotate, and the driving gear (303) drives the driving gear ring (404) to rotate, thereby supporting the core rod (4) to drive the bottom side mounting seat (5) and the push plate (6) to rotate as a whole, and using the brush bristles (602a) of the push plate (6) to rotate and clean the road surface of the area to be tested; S3, the push plate (6) automatically expands outward: during the rotation of the core rod (4) supported by the adjustment cylinder (3), the mounting seat (5) and the push plate (6) rotate along with the core rod (4), and the auxiliary gear (403) on the screw rod (402) at the bottom end of the core rod (4) is meshed with the auxiliary gear ring (7). At this time, the auxiliary gear (403) is in a continuous rotation state, and then the screw rod (402) is driven to rotate by the auxiliary gear (403), so as to utilize the thread cooperation between the screw rod (402) and the constraint cylinder (501), and then the mounting seat (5) and the push plate (6) are driven to gradually expand and translate outward as a whole while the core rod (4) rotates, so that the cleaning sheet (602) automatically expands outward during the rotation and cleaning process to clean the road surface of the test area; S4, measuring sand and leveling: pouring 25 ml of sand measured by the sand measuring cylinder onto the road surface of the test area to form a sand pile, and then turning the push plate (6) up and down to the state where the rubber sheet (601) is facing downward, at this time, moving the push plate (6) above the sand pile, and controlling the downward pressure of the push plate (6) in real time by pulling the handle (307), and then turning the crank (305) to drive the core rod (4) to rotate, and using the core rod (4) to support the mounting seat (5) and the push plate (6) to rotate, so as to push the sand pile outward and level it; S5. Position control of the push plate (6): When the push plate (6) rotates along with the core rod (4), the push plate (6) gradually expands outwards under the rotation drive of the screw rod (402). When the push plate (6) needs to stop the synchronous expansion action, the movable handle (704) is pulled upwards while holding the lifting handle (307). The movable handle (704) is used to pull the synchronous ring (702) to drive the spoke (701) and the auxiliary gear ring (7) to move upwards, and at the same time, the retaining spring (703) is compressed to separate the auxiliary gear ring (7) from the auxiliary gear (403). At this time, the push plate ( 6) and the mounting seat (5) slide to a fixed circumferential position, and perform circular motion under the support of the core rod (4) to achieve the sand leveling. When it is necessary to adjust the paving range of the push plate (6), loosen the movable handle (704) to use the retaining spring (703) to push the synchronization ring (702) to reset, and re-engage the auxiliary gear ring (7) with the auxiliary gear (403). At this time, the auxiliary gear (403) can drive the screw (402) to rotate to drive the push plate (6) and the mounting seat (5) outward again, thereby controlling the paving range and pressure of the push plate (6) in real time.

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