Novel abrader

Abstract

The embodiment of the utility model provides a novel abrader, which relates to the field of airport cement pavement engineering, and comprises a mounting platform, a driving mechanism and a walking wheel group, the mounting platform is used for supporting and positioning a to-be-tested concrete roadbed; the driving mechanism is fixed on the mounting platform; the walking wheel set comprises a mounting frame and a plurality of directional rubber wheels, the mounting frame is connected with the driving mechanism, and the directional rubber wheels are all fixed to the mounting frame and distributed around the preset axis at intervals. The extension line of the wheel shaft of each directional rubber wheel is vertically intersected with a preset axis; and the driving mechanism is used for driving the mounting frame and the directional rubber wheels to rotate around a preset axis. According to the design of the wear meter, the test process can better conform to the real service condition of airport concrete, so that the accuracy and the reliability of a test result are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of airport cement pavement engineering, and specifically relates to a novel abrasion instrument. BACKGROUND

[0002] The design of the abrasion instrument is to make the test research of the wear resistance of the airport cement pavement material more in line with the actual situation, to truly simulate the wear and surface loose state of the airport cement pavement under the repeated action of the vehicle load, and to provide a theoretical basis for the design of the airport cement pavement material. Most of the traditional test machines cannot truly simulate the wear state under the interaction of the tire and the pavement. Under normal circumstances, the wear cycle of the tire and the pavement is long and energy-consuming, so the tire and pavement wear test cycle is relatively long. The prior art does not comprehensively consider the tire size, width, wear resistance, material, pattern and other factors, and the selection of a suitable tire plays a crucial role in the overall function of the test instrument. If the tire size is too large, the contact area of the tread with the concrete test piece will be larger, and the bearing weight required to reach the preset pressure will also be larger, and the cost of instrument manufacturing will also be higher. If the tire size is too small, the bearing capacity of the tire is not enough, which is easy to cause deformation and damage of the tire. On the other hand, the action area generated by the tire when it wears on the concrete test piece is too small, which is not conducive to the measurement of test data and the observation of test results, and cannot well guarantee the accuracy of the test results. Moreover, in the prior art, when testing the wear resistance of the airport concrete pavement, a steel wheel is used to wear the test piece, and the wear form of the steel wheel to the test piece is sliding friction, which is far from the actual wear condition of the pavement under the vehicle load, and the accuracy of the test results is poor. SUMMARY

[0003] The purpose of the utility model includes, for example, providing a novel abrasion instrument, which can make the test process more in line with the actual service condition of the airport concrete, thereby improving the accuracy and reliability of the test results.

[0004] The embodiments of the utility model can be implemented as follows:

[0005] In a first aspect, the utility model provides a novel abrasion instrument for obtaining the wear condition of the airport concrete pavement, comprising:

[0006] The installation platform is used to support and position the concrete roadbed to be tested. The driving mechanism is fixed on the installation platform. The walking wheel set comprises a mounting bracket and a plurality of directional rubber wheels. The mounting bracket is connected with the driving mechanism, and the plurality of directional rubber wheels are fixed on the mounting bracket and arranged at intervals around a preset axis. The extension line of the wheel shaft of each directional rubber wheel intersects perpendicularly with the preset axis. The driving mechanism is used to drive the mounting bracket and the plurality of directional rubber wheels to rotate around the preset axis.

[0007] In an optional embodiment, the directional rubber wheel comprises a mounting shaft, a mounting seat and a rubber wheel body, the mounting shaft is fixed to the mounting seat and the mounting frame at the same time, and the rubber wheel body is rotatably mounted to the mounting seat; the driving mechanism is connected with the mounting shaft.

[0008] Based on the above scheme, the structure of the directional rubber wheel is simple, easy to manufacture, and through the connection of the mounting shaft and the mounting frame, the space in the longitudinal direction can be reasonably utilized, and assembly is facilitated.

[0009] In an optional embodiment, the mounting shaft comprises a one-piece first shaft body and a second shaft body, the diameter of the first shaft body is smaller than the diameter of the second shaft body, so that the end face of the second shaft body connected with the first shaft body forms an annular limiting surface; the mounting frame is provided with a positioning through hole, the first shaft body is arranged in the positioning through hole, and the mounting frame abuts against the annular limiting surface; the driving mechanism is connected with the second shaft body.

[0010] Based on the above scheme, during assembly, a plurality of directional rubber wheels can be vertically arranged, and then the mounting frame is moved from the top to the bottom of the plurality of directional rubber wheels, the mounting shafts of the plurality of directional rubber wheels are respectively inserted into the corresponding positioning through holes of the mounting frame, the mounting frame is supported and carried by the plurality of annular limiting surfaces, and the position of the downward movement is limited by the annular limiting surface, so that the relative position of the mounting frame and the mounting shaft can be quickly known, and assembly is facilitated.

[0011] In an optional embodiment, the new wear tester further comprises a counterweight, the counterweight is mounted on the mounting frame, and the counterweight is used to make the mounting frame fit on the annular limiting surface.

[0012] Based on the above, the gravity of the counterweight is transmitted to the plurality of mounting shafts through the mounting frame, so that the rubber wheel body can stably walk on the concrete roadbed to be tested, and the gravity of the counterweight is adjusted according to the requirement, so as to simulate the wear test under different scenes.

[0013] In an optional embodiment, the first shaft body protrudes from the positioning through hole, the portions of the plurality of first shaft bodies protruding from the positioning through hole enclose a positioning area, the counterweight is located in the positioning area, and the plurality of first shaft bodies cooperatively limit the counterweight from sliding off the mounting frame from the edge of the mounting frame.

[0014] Based on the above scheme, the positions of the plurality of first shaft bodies cooperatively limit the counterweight, so that the counterweight is not easy to fall off from the edge of the mounting frame under the action of centrifugal force when the counterweight rotates with the mounting frame, and the position of the counterweight is stable and reliable. At the same time, no additional positioning structure is needed to position the counterweight, the structure is simplified, and the cost is reduced.

[0015] In an optional embodiment, the diameter of the rubber wheel body is set to 180mm-220mm, and the tire width of the rubber wheel body is set to 60mm-80mm.

[0016] Based on the above scheme, the parameter size of the rubber wheel body is set in a reasonable range, which can ensure that the contact area of the rubber wheel body with the road surface is appropriate, and it is not easy to appear the condition of too large or too small area, thereby facilitating the measurement of test data and the observation of test results, and also being able to well guarantee the accuracy of test results.

[0017] In an optional embodiment, the driving mechanism comprises a motor, a speed reducer and a connecting frame, the output shaft of the motor is connected with the speed reducer, the output shaft of the speed reducer is connected with the connecting frame, and the connecting frame is connected with the plurality of directional rubber wheels; the motor and the speed reducer are both mounted on the mounting platform.

[0018] Based on the above scheme, the rotating speed of the motor is adjusted by the speed reducer and then output to the connecting frame, and the plurality of directional rubber wheels are driven to rotate synchronously by the connecting frame, thereby facilitating the control of the rotating speed of the plurality of directional rubber wheels and being able to adapt to the test requirements of different scenes.

[0019] In an optional embodiment, the connecting frame comprises a center ring and a plurality of connecting arms, the plurality of connecting arms are all fixed on the center ring and are arranged at intervals around the axis of the center ring; the output shaft of the speed reducer is arranged in the center ring; and the plurality of directional rubber wheels are respectively connected with the plurality of connecting arms.

[0020] Based on the above scheme, the connecting frame has a simple structure and is convenient for processing and manufacturing. The plurality of connecting arms are all connected with the center ring, forming a frame structure, which saves materials and reduces costs.

[0021] In an optional embodiment, a shaft shoulder is arranged on the output shaft of the speed reducer, the center ring is sleeved outside the output shaft and connected with the shaft shoulder; and a locking nut is screwed on the output shaft, and the locking nut and the shaft shoulder cooperate to clamp the center ring.

[0022] Based on the above scheme, the center ring is fixed by the cooperation of the shaft shoulder and the locking nut, so that the center ring is not easy to move in the axial direction of the output shaft, and the operation is stable and reliable.

[0023] In an optional embodiment, the mounting platform comprises a support leg and a support plate, the support leg is fixedly connected with the support plate, the top of the support plate is provided with a groove for accommodating the concrete roadbed to be tested; and the driving mechanism is mounted on the support plate.

[0024] Based on the above scheme, the concrete roadbed to be tested is located in the groove, and when the concrete roadbed cracks during the test, the debris is blocked by the groove side wall, which is not easy to scatter everywhere, does not easily pollute the environment, and is also convenient for subsequent cleaning.

[0025] The beneficial effects of the embodiments of the utility model include, for example:

[0026] To sum up, the novel abrasion instrument provided by the embodiment is mainly used for obtaining the abrasion condition of the airport concrete pavement, and when used, the plurality of directional rubber wheels of the abrasion instrument are placed on the surface of the concrete roadbed to be tested, the driving mechanism is started, the driving mechanism drives the plurality of directional rubber wheels to simultaneously rotate directionally around the preset axis on the concrete roadbed to be tested, the plurality of directional rubber wheels rub against the surface of the concrete roadbed to be tested, and thus the wear resistance and other parameters of the concrete roadbed are tested. Since the directional rubber wheels are used to act on the surface of the roadbed, the directional rubber wheels are used to perform rolling friction loading on the airport concrete test piece, the material of the directional rubber wheels is close to that of the real vehicle rubber tire, the friction form is the same, the difference between the abrasion condition of the road surface under the vehicle load and the abrasion condition of the road surface is small, the pressure of the directional rubber wheels on the surface of the roadbed can also reach the value of the real vehicle ground pressure, the real situation of the road surface abrasion under the vehicle load can be better simulated, the abrasion condition and the rule of the airport pavement concrete test piece obtained through the test are more reasonable. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and thus should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of the drawings.

[0028] Figure 1 It is a schematic view of the novel abrasion instrument of the embodiment of the application.

[0029] Figure 2 It is a schematic view of the directional rubber wheel of the embodiment of the application.

[0030] Figure 3 It is a schematic view of the mounting frame of the embodiment of the application.

[0031] Figure 4 It is a schematic view of the connecting frame of the embodiment of the application.

[0032] Icon:

[0033] 001 - concrete roadbed to be tested; 100 - mounting platform; 110 - foot; 120 - support plate; 121 - groove; 200 - driving mechanism; 210 - motor; 220 - speed reducer; 230 - connecting frame; 231 - center ring; 232 - connecting arm; 2321 - assembly through hole; 240 - locking nut; 300 - walking wheel set; 310 - mounting frame; 311 - positioning through hole; 320 - directional rubber wheel; 321 - mounting shaft; 3211 - first shaft body; 3212 - second shaft body; 3213 - annular limiting surface; 322 - mounting seat; 323 - rubber wheel body; 400 - counterweight. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0036] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0037] In the description of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0038] In addition, if the terms "first", "second" and the like appear, they are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0039] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.

[0040] In the prior art, in order to obtain the wear and surface loosening state of the airport concrete pavement under the repeated action of vehicle load, a steel wheel is generally used to walk on the to-be-tested pavement, and the influence of the size of the steel wheel on the measurement is not considered. The size of the steel wheel is too large or too small, which causes the external force acting on the to-be-tested pavement in the test process to be quite different from the actual external force acting on the airport pavement, and the accuracy of the test result is not high.

[0041] Therefore, the designer provides a new type of wear instrument to simulate the wear and surface loosening state of the airport cement pavement under the repeated action of vehicle load in a real scenario, to provide a theoretical basis for the design of the airport cement pavement material, and to make the test research on the wear resistance of the airport cement pavement material more in line with the actual situation.

[0042] Please refer to Figures 1-4 In the embodiment, the new type of wear instrument comprises a mounting platform 100, a driving mechanism 200 and a walking wheel set 300. The mounting platform 100 is used to support and position the to-be-tested concrete roadbed 001; the driving mechanism 200 is fixed on the mounting platform 100; the walking wheel set 300 comprises a mounting frame 310 and a plurality of directional rubber wheels 320. The mounting frame 310 is connected with the driving mechanism 200, and the plurality of directional rubber wheels 320 are fixed on the mounting frame 310 and are arranged at intervals around a preset axis. The extension line of the wheel shaft of each directional rubber wheel 320 is perpendicular to the preset axis. The driving mechanism 200 is used to drive the mounting frame 310 and the plurality of directional rubber wheels 320 to rotate around the preset axis.

[0043] As described above, the working mode of the new type of wear instrument of the embodiment is as follows:

[0044] The plurality of directional rubber wheels 320 of the wear instrument are placed on the surface of the to-be-tested concrete roadbed 001, the driving mechanism 200 is started, and the driving mechanism 200 drives the plurality of directional rubber wheels 320 to rotate directionally around the preset axis on the to-be-tested concrete roadbed 001 at the same time. The plurality of directional rubber wheels 320 generate friction with the surface of the to-be-tested concrete roadbed 001, so as to test the wear resistance and other parameters of the concrete roadbed. Since the directional rubber wheels 320 are used to act on the surface of the roadbed, the directional rubber wheels 320 are used to perform rolling friction loading on the airport concrete test piece, which is close to the material of the real vehicle rubber tire and has the same friction form, and the difference between the wear state of the road surface caused by the directional rubber wheels 320 and the actual road surface caused by the vehicle load is small. The pressure of the directional rubber wheels 320 on the surface of the roadbed can also reach the value of the real vehicle ground pressure, which can better simulate the real situation of the wear of the road surface caused by the vehicle load. The wear state and rule of the airport pavement concrete test piece obtained by the test are more reasonable.

[0045] The details of the new type of wear instrument of the embodiment of the application are described below by way of example.

[0046] Please refer toFigures 1-2 In the embodiment, the directional rubber wheel 320 can include a mounting shaft 321, a mounting seat 322, and a rubber wheel body 323. The mounting shaft 321 is fixed to the mounting seat 322 and the mounting frame 310, and the rubber wheel body 323 is rotatably mounted to the mounting seat 322. The driving mechanism 200 is connected to the mounting shaft 321. The directional rubber wheel 320 has a simple structure, is easy to manufacture, and is connected to the mounting frame 310 through the mounting shaft 321, so that the space in the longitudinal direction can be reasonably utilized, and assembly is facilitated.

[0047] It should be understood that the mounting shaft 321 and the mounting seat 322 can be metal parts. The mounting shaft 321 can be fixed to the mounting seat 322 by welding. The structure of the mounting shaft 321 and the mounting seat 322 is firm, the connection mode is simple and reliable, and the mounting shaft 321 and the mounting seat 322 are easy to process.

[0048] In addition, the mounting shaft 321 can be a cylindrical part, and the mounting seat 322 can be a rectangular part. The axis of the mounting shaft 321 coincides with the center line of the mounting seat 322.

[0049] In actual testing, the number of directional rubber wheels 320 is selected as needed. In the embodiment, the number of directional rubber wheels 320 is four, which is taken as an example for description. In addition, the structures of the four directional rubber wheels 320 are the same, which can be mass-produced, have universality, have low processing and manufacturing costs, and have low replacement costs.

[0050] It should be noted that each rubber wheel body 323 is rotatably connected to the mounting seat 322, and the rubber wheel body 323 can be detached from the mounting seat 322, so that replacement is facilitated.

[0051] Optionally, the mounting shaft 321 includes an integrated first shaft body 3211 and a second shaft body 3212. The first shaft body 3211 and the second shaft body 3212 are both cylindrical shafts. The first shaft body 3211 is located at one end of the second shaft body 3212, and the first shaft body 3211 and the second shaft body 3212 are coaxially arranged. The diameter of the first shaft body 3211 is smaller than the diameter of the second shaft body 3212, so that the end surface of the second shaft body 3212 connected to the first shaft body 3211 forms an annular limiting surface 3213.

[0052] Please refer to Figure 1 and Figure 3 Correspondingly, the mounting frame 310 is provided with a positioning through hole 311. The first shaft body 3211 is arranged in the positioning through hole 311, and the mounting frame 310 abuts against the annular limiting surface 3213. The driving mechanism 200 is connected to the second shaft body 3212. The number of the positioning through holes 311 is consistent with the number of the directional rubber wheels 320. For example, in the embodiment, the number of the positioning through holes 311 is four and the positioning through holes 311 are uniformly arranged.

[0053] In assembly, all directional rubber wheels 320 can be vertically arranged first, that is, the mounting shaft 321 of the directional rubber wheel 320 is vertically arranged and upward, and then the mounting frame 310 is moved downward from the upward of all directional rubber wheels 320, the mounting shaft 321 of each directional rubber wheel 320 is respectively inserted into the corresponding positioning hole 311 of the mounting frame 310, the mounting frame 310 is supported and carried by the plurality of annular limiting surfaces 3213, the downward position is limited by the annular limiting surface 3213, the relative position of the mounting frame 310 and the mounting shaft 321 can be quickly known, and the installation is convenient.

[0054] In the embodiment, optionally, the diameter of the rubber wheel body 323 is set to 180mm-220mm, and the tire width of the rubber wheel body 323 is set to 60mm-80mm. The parameter size of the rubber wheel body 323 is set in a reasonable range, which can ensure that the contact area of the rubber wheel body 323 with the road surface is appropriate, and it is not easy to appear the condition of too large or too small area, thereby being beneficial to the measurement of test data and the observation of test results, and also being able to well guarantee the accuracy of test results.

[0055] For example, in some embodiments, the diameter of the rubber wheel body 323 can be set to 180mm, 200mm or 220mm, and the tire width of the rubber wheel body 323 can be set to 60mm, 70mm or 80mm.

[0056] In the embodiment, optionally, the new wear tester further comprises a counterweight 400, the counterweight 400 is installed on the mounting frame 310, and the counterweight 400 is used to make the mounting frame 310 adhere to the annular limiting surface 3213. The gravity of the counterweight 400 is transmitted to the plurality of mounting shafts 321 through the mounting frame 310, so that the rubber wheel body 323 can stably walk on the concrete roadbed 001 to be tested, and the gravity of the counterweight 400 is adjusted according to the demand, so as to simulate the wear resistance test under different scenes.

[0057] It should be understood that the counterweight 400 can be directly prevented on the mounting frame 310, and the counterweight 400 is convenient to install. The number of the counterweight 400 can be one or more, and the plurality of counterweights 400 can be arranged in a stacked manner, and the upper space of the mounting frame 310 is reasonably utilized.

[0058] It should be noted that, optionally, each first shaft body 3211 extends out of the positioning hole 311, and the part of the plurality of first shaft bodies 3211 extending out of the positioning hole 311 surrounds a positioning area, the counterweight 400 is located in the positioning area, and the plurality of first shaft bodies 3211 cooperatively limit the counterweight 400 from sliding off the mounting frame 310 from the edge of the mounting frame 310.

[0059] In this way, the plurality of first shaft bodies 3211 cooperate to limit the position of the counterweight 400, so that the counterweight 400 is not easy to fall off the edge of the mounting frame 310 under the action of centrifugal force when the mounting frame 310 rotates, and the position of the counterweight 400 is stable and reliable. At the same time, there is no need for additional positioning structure to position the counterweight 400, which simplifies the structure and reduces the cost.

[0060] Please refer to Figure 1 and Figure 4 In the embodiment, optionally, the driving mechanism 200 includes a motor 210, a speed reducer 220 and a connecting frame 230. The output shaft of the motor 210 is connected with the speed reducer 220, the output shaft of the speed reducer 220 is connected with the connecting frame 230, the connecting frame 230 is connected with the plurality of directional rubber wheels 320; the motor 210 and the speed reducer 220 are both installed on the mounting platform 100. The rotating speed of the motor 210 is adjusted by the speed reducer 220 and then output to the connecting frame 230, which drives the plurality of directional rubber wheels 320 to rotate synchronously through the connecting frame 230, so as to facilitate the control of the rotating speed of the plurality of directional rubber wheels 320 and adapt to the test requirements of different scenes.

[0061] It should be understood that the shell of the speed reducer 220 can be fixedly connected with the shell of the motor 210 through bolts, or the motor 210 and the speed reducer 220 are arranged as an integrated structure, which is compact in structure and small in size, and is convenient to install. At least one of the shell of the motor 210 and the shell of the speed reducer 220 can also be fixed on the mounting platform 100 through bolts, which is convenient to install.

[0062] In addition, the speed ratio of the speed reducer 220 is adjusted as needed, and the output parameters of the output shaft of the speed reducer 220 can be set at 30r / min, 60r / min, 90r / min and 120r / min respectively in the test process, so as to simulate the stress condition of the concrete pavement under different rotating speeds.

[0063] In the embodiment, the connecting frame 230 includes a center ring 231 and a plurality of connecting arms 232, the plurality of connecting arms 232 are fixed to the center ring 231 and are arranged at intervals around the axis of the center ring 231. Each connecting arm 232 can be fixed to the center ring 231 by welding. The output shaft of the speed reducer 220 is arranged in the center ring 231, and the output shaft of the speed reducer 220 and the center ring 231 can be connected by spline, and the output shaft of the speed reducer 220 and the center ring 231 are relatively fixed in the circumferential direction of the center ring 231. Further, the center ring 231 is a circular ring, the connecting arms 232 extend in the radial direction of the center ring 231, that is, the connecting arms 232 are arranged perpendicular to the axis of the center ring 231, and the center line of the connecting arm 232 intersects the center line of the center ring 231. The connecting arm 232 is provided with an assembly through hole 2321, the assembly through hole 2321 is a cylindrical hole, and the axis of the assembly through hole 2321 is parallel to the axis of the center ring 231. The number of connecting arms 232 is the same as the number of directional rubber wheels 320, and each directional rubber wheel 320 is positioned by one connecting arm 232. Specifically, the second shaft body 3212 of the directional rubber wheel 320 is arranged in the corresponding assembly through hole 2321, which is convenient and fast to disassemble and assemble.

[0064] In the embodiment, the output shaft of the speed reducer 220 is provided with a shaft shoulder, the center ring 231 is sleeved outside the output shaft and connected with the shaft shoulder, and the output shaft is screwed with a locking nut 240, and the locking nut 240 and the shaft shoulder cooperate to clamp the center ring 231. The center ring 231 is fixed by the cooperation of the shaft shoulder and the locking nut 240, so that the center ring 231 is not easy to move in the axial direction of the output shaft, and the operation is stable and reliable.

[0065] In the embodiment, the mounting platform 100 includes a support leg 110 and a support plate 120, the support leg 110 is fixedly connected with the support plate 120, the top of the support plate 120 is provided with a groove 121 for accommodating the concrete roadbed 001 to be tested, and the driving mechanism 200 is mounted on the support plate 120. The concrete roadbed 001 to be tested is located in the groove 121, and when the concrete roadbed cracks during the test, the debris is blocked and limited by the groove side wall of the groove 121, so that the debris is not easy to scatter everywhere, the environment is not easy to be polluted, and the subsequent cleaning is also convenient.

[0066] The novel abrasion tester provided in the embodiment reasonably controls the diameter and the tire width of the rubber wheel body 323, so that the contact area of the rubber wheel body 323 and the concrete pavement is moderate, the rubber wheel body 323 made of rubber material is in contact with the concrete pavement, the simulated scene is closer to the real service scene of the concrete pavement, and the data results obtained by testing are more accurate and reliable.

[0067] The above merely illustrates the specific implementation of the present application, but the protection scope of the present application is not limited to this, 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 novel wear meter for obtaining wear information on airport concrete pavement, characterized in that, include: The system comprises an installation platform (100), a drive mechanism (200), and a set of wheels (300). The installation platform (100) is used to support and position the concrete subgrade (001) to be tested. The drive mechanism (200) is fixed on the installation platform (100). The set of wheels (300) includes a mounting frame (310) and multiple directional rubber wheels (320). The mounting frame (310) is connected to the drive mechanism (200). The multiple directional rubber wheels (320) are all fixed on the mounting frame (310) and arranged at intervals around a preset axis. The extension line of the axle of each directional rubber wheel (320) intersects the preset axis perpendicularly. The drive mechanism (200) is used to drive the mounting frame (310) and the multiple directional rubber wheels (320) to rotate around the preset axis.

2. The novel wear tester according to claim 1, characterized in that: The directional rubber wheel (320) includes a mounting shaft (321), a mounting base (322), and a rubber wheel body (323). The mounting shaft (321) is fixed to both the mounting base (322) and the mounting bracket (310). The rubber wheel body (323) is rotatably mounted on the mounting base (322). The drive mechanism (200) is connected to the mounting shaft (321).

3. The novel wear tester according to claim 2, characterized in that: The mounting shaft (321) includes an integral first shaft body (3211) and a second shaft body (3212). The diameter of the first shaft body (3211) is smaller than the diameter of the second shaft body (3212), so that the end face of the second shaft body (3212) connected to the first shaft body (3211) forms an annular limiting surface (3213). The mounting bracket (310) is provided with a positioning through hole (311), and the first shaft body (3211) passes through the positioning through hole (311). The mounting bracket (310) abuts against the annular limiting surface (3213). The driving mechanism (200) is connected to the second shaft body (3212).

4. The novel wear tester according to claim 3, characterized in that: The novel wear tester also includes a counterweight (400), which is mounted on the mounting frame (310) and is used to make the mounting frame (310) fit against the annular limiting surface (3213).

5. The novel wear tester according to claim 4, characterized in that: The first shaft (3211) extends out of the positioning through hole (311), and the portions of the first shafts (3211) extending out of the positioning through hole (311) form a positioning area. The counterweight (400) is located in the positioning area, and the multiple first shafts (3211) cooperate to restrict the counterweight (400) from sliding away from the edge of the mounting bracket (310).

6. The novel wear tester according to claim 2, characterized in that: The diameter of the rubber wheel body (323) is set to 180mm-220mm, and the tire width of the rubber wheel body (323) is set to 60mm-80mm.

7. The novel wear tester according to any one of claims 1-6, characterized in that: The drive mechanism (200) includes a motor (210), a reducer (220), and a connecting frame (230). The output shaft of the motor (210) is connected to the reducer (220), the output shaft of the reducer (220) is connected to the connecting frame (230), and the connecting frame (230) is connected to the plurality of directional rubber wheels (320). The motor (210) and the reducer (220) are both mounted on the mounting platform (100).

8. The novel wear tester according to claim 7, characterized in that: The connecting frame (230) includes a central ring (231) and multiple connecting arms (232), all of which are fixed on the central ring (231) and arranged at intervals around the axis of the central ring (231); the output shaft of the reducer (220) passes through the central ring (231); and the multiple directional rubber wheels (320) are respectively connected to the multiple connecting arms (232).

9. The novel wear tester according to claim 8, characterized in that: The output shaft of the reducer (220) is provided with a shoulder, and the central ring (231) is sleeved on the output shaft and connected to the shoulder; a locking nut (240) is screwed on the output shaft, and the locking nut (240) cooperates with the shoulder to clamp the central ring (231).

10. The novel wear tester according to claim 1, characterized in that: The installation platform (100) includes a support leg (110) and a support plate (120). The support leg (110) is fixedly connected to the support plate (120). The top of the support plate (120) is provided with a groove (121) for accommodating the concrete subgrade (001) to be tested. The drive mechanism (200) is installed on the support plate (120).

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