Comprehensive rutting test equipment

Abstract

This utility model discloses a comprehensive rutting test device, comprising a first moving device, a second moving device, a rutting wheel, and a loading device. The rutting wheel is placed on the test surface. The loading device is mounted on the first moving device and can move up and down on it, with its bottom connected to the rutting wheel. The first moving device is mounted on the second moving device and can move along a first direction, causing the loading device and the rutting wheel to move together along the first direction. The second moving device can move along a second direction, causing the first moving device, the loading device, and the rutting wheel to move together along the second direction, with an angle between the second and first directions. The rutting wheel is subjected to different weights of force through the loading device. Simultaneously, the movement of the rutting wheel on the test surface via the first and second moving devices represents the overall degree of road surface damage.

Description

Technical Field

[0001] This utility model relates to a comprehensive rutting test device. Background Technology

[0002] Rutting is a permanent deformation along the direction of travel caused by repeated vehicle loads. It mainly manifests as depressions and grooves formed along wheel tracks on the road surface and is one of the most common defects in asphalt pavements. The presence of rutting directly reduces road surface smoothness, increases driving resistance, and can even cause vehicles to skid at high speeds due to uneven friction between the tires and the road surface, seriously threatening driving safety. At the same time, rutting accelerates fatigue damage to the road surface, shortens the service life of asphalt pavements, and increases road maintenance costs.

[0003] To evaluate the rutting resistance of asphalt mixtures, the conventional rutting test is commonly used in existing technologies. The core procedure of this test is as follows: Asphalt mixture specimens are prepared into standard specimens (typically 300mm × 300mm × 50mm test plates), placed in a high-temperature environment (60℃) for heat preservation, and then the central part of the specimen is rolled back and forth in a straight line using the test wheel of a rutting test machine. The deformation of the specimen after a certain number of rolling cycles is recorded, and the dynamic stability is calculated to evaluate the rutting resistance of the mixture. A higher dynamic stability indicates better rutting resistance and is currently the core indicator for evaluating the rutting resistance of asphalt mixtures in highway engineering.

[0004] However, in real-world driving, vehicles do not always travel in a straight line—turning, U-turns, lane changes, and other maneuvers all subject the road surface to lateral shear stress, a key factor leading to further rutting. However, conventional rutting tests can only express the degree of damage to the road surface caused by vehicles traveling in a straight line, and cannot express the overall degree of road surface damage. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of existing rut tests, which can only express the degree of damage to the road surface by vehicles during straight-line driving and cannot express the overall degree of damage to the road surface, and to provide a comprehensive rut test device.

[0006] The present invention solves the above-mentioned technical problems through the following technical solution:

[0007] A comprehensive rutting test device is characterized in that it includes a first moving device, a second moving device, a rutting wheel, and a loading device. The rutting wheel is placed on a test surface. The loading device is disposed on the first moving device and can move up and down on the first moving device. The bottom of the loading device is connected to the rutting wheel. The first moving device is disposed on the second moving device and can move along a first direction, thereby moving the loading device and the rutting wheel together along the first direction. The second moving device can move along a second direction, thereby moving the first moving device, the loading device, and the rutting wheel together along the second direction. An angle exists between the second direction and the first direction.

[0008] In this scheme, the above-mentioned structural form is adopted, which allows the rut wheel to adjust its displacement in the vertical direction with the loading device. The load is applied to the test surface through the rut wheel. There is an angle between the first moving device and the second moving device, and they move in coordination, so that the rut wheel can form a trajectory in a compound direction on the surface of the rut plate, which expresses the overall degree of road damage.

[0009] Preferably, the first moving device includes a first platform and a first driving mechanism. The loading device is disposed on the first platform and can move up and down on the first platform. The first driving mechanism is disposed on the second moving device, and the movable end of the first driving mechanism is connected to the first platform and used to drive the first platform to move along the first direction.

[0010] In this solution, the above-mentioned structural form is adopted. The first driving mechanism is used to provide driving force and drive the first platform to move along the first direction. The movement of the first platform drives the loading device and the wheel wheel to move together along the first direction. The overall structure is simple and easy to install and set up.

[0011] Preferably, the loading device includes a counterweight and a connector. The counterweight is disposed on the first platform and can be moved up and down on the first platform. The first platform has a through hole. The top of the connector is connected to the counterweight, the connector passes through the through hole, and the bottom of the connector is connected to the wheel.

[0012] In this design, the aforementioned structure allows for the adjustment of the loading device's own weight using counterweights. As the counterweights rise and fall on the first platform, the wheel tracks move up and down with them. Simultaneously, the connecting piece passes through a through-hole, providing a stable lifting guide platform for the loading device through the through-hole, preventing the loading device from shifting during pressure application and ensuring high stability.

[0013] Preferably, the loading device further includes at least one guide member, the first platform has at least one guide groove, one end of the guide member is connected to the bottom of the counterweight, and the other end of the guide member is inserted into the guide groove and can move vertically up and down relative to the first platform.

[0014] In this scheme, the above-mentioned structural form is adopted. The presence of the guide can limit the offset of the counterweight during the loading process, so that the counterweight can be applied more smoothly during the movement.

[0015] Preferably, the second mobile device includes a second platform and a second drive mechanism, the movable end of the second drive mechanism is connected to the second platform and is used to drive the second platform to move along the second direction, and the first platform is disposed on the second platform.

[0016] In this scheme, the above-mentioned structural form is adopted. Since the first platform is set on the second platform, the first platform not only moves along the first direction, but also the second drive mechanism is used to provide driving force and drive the second platform to move along the second direction. The first platform also moves along the second direction with the second platform, so that the running trajectory of the wheel rut changes from a single-direction trajectory to a composite-direction trajectory, which can express the overall degree of damage to the road surface.

[0017] Preferably, a first guide structure is provided between the first platform and the second platform;

[0018] And / or, a second guide structure is provided at the bottom of the second platform.

[0019] In this solution, the above-mentioned structural form is adopted. The first guide structure has a guiding function. By setting the first guide structure, the first platform and the second platform are slidably connected. The first platform moves along the first guide structure in the first direction, so that the first platform, the loading device and the wheel track can move more stably and reliably in the first direction.

[0020] The second guide structure has a guiding function. By setting the second guide structure, the second platform is slidably connected to the support surface. The second platform moves along the second guide structure in the second direction, making the movement of the second platform, the first platform, the loading device and the wheel in the second direction more stable and reliable.

[0021] Preferably, the first guide structure includes a first slide rail and a plurality of first sliders. The first slide rail is disposed on the top surface of the second platform, and the plurality of first sliders are evenly disposed on the bottom surface of the first platform. The plurality of first sliders are connected to the first slide rail and are able to move on the first slide rail.

[0022] And / or, the second guide structure includes a second slide rail and a second slider, the second slide rail is disposed on the support surface, a plurality of second sliders are evenly disposed on the bottom surface of the second platform, and the plurality of second sliders are connected to the second slide rail and are able to move on the second slide rail.

[0023] In this solution, the above-mentioned structural form is adopted. The first guide structure slides and connects the first platform and the second platform into one unit, so that the first platform moves along the first guide structure in the first direction. At the same time, the first platform moves with the second platform in the second direction, and the load-bearing capacity and stability of the first platform during movement are significantly improved.

[0024] The second platform moves along the second guide structure in the second direction, significantly improving the load-bearing capacity and stability of the second platform during movement.

[0025] Preferably, there are two first guide structures, and the two first guide structures are respectively disposed on both sides of the first platform;

[0026] And / or, the number of the second guide structures is two, and the two second guide structures are respectively disposed at both ends of the second platform.

[0027] In this scheme, by adopting the above-mentioned structural form, the first platform is supported by two vertical directions on both sides, and the first platform can move more stably along the first guide structure in the first direction.

[0028] The second platform is supported at both ends in two vertical directions, which allows it to move more stably along the second guide structure in the second direction.

[0029] Preferably, the loading device passes through the second platform.

[0030] In this design, the aforementioned structural form ensures that the load acts continuously on the rutting wheel and is transferred to the rutting plate via the rutting wheel, allowing the rutting wheel to move unimpeded along the first and second directions. Simultaneously, the loading device passes through both the first and second platforms, making the overall structure of the comprehensive rutting test equipment more compact and space-saving.

[0031] Preferably, the first direction and the second direction are perpendicular to each other.

[0032] In this scheme, the above-mentioned structural form is adopted. The first platform and the wheel move along the second platform in the second direction, so that the wheel moves both left and right in the first direction and forward and backward in the second direction. The trajectory of the wheel is formed by the combination of the mutually perpendicular first and second directions.

[0033] The positive and progressive effects of this utility model are as follows:

[0034] This utility model discloses a comprehensive rutting test device. By mounting a loading device on a first moving device and enabling it to move up and down on the first moving device, loading devices of different weights apply force to the test surface through the rutting wheel. Simultaneously, the loading device can move together with the first and second moving devices, driving the rutting wheel to move along a first direction and a second direction respectively. An angle exists between the first and second directions, and their coordinated movement allows the rutting wheel to form a composite trajectory on the rutting plate surface, representing the overall degree of road damage. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of the comprehensive rutting test equipment according to an embodiment of the present invention.

[0036] Explanation of reference numerals in the attached figures:

[0037] Comprehensive rutting test equipment 1

[0038] First mobile device 2

[0039] First Platform 21

[0040] First drive mechanism 22

[0041] First motor 221

[0042] Single-axis 222

[0043] First guiding structure 23

[0044] First slide rail 231

[0045] First slider 232

[0046] First direction 3

[0047] Second mobile device 4

[0048] Second Platform 41

[0049] Second drive mechanism 42

[0050] Second motor 421

[0051] Lead screw 422

[0052] Second guiding structure 43

[0053] Second slide rail 431

[0054] Second slider 432

[0055] Second direction 5

[0056] Loading device 6

[0057] 61 counterweights

[0058] Connector 62

[0059] Guide component 63

[0060] Guide groove 64

[0061] Wheel 7

[0062] 8 ruts Detailed Implementation

[0063] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0064] like Figure 1 As shown, this embodiment discloses a comprehensive rutting test device 1, which includes a first moving device 2, a second moving device 4, a rutting wheel 7, and a loading device 6. The rutting wheel 7 is placed on the test surface, and the loading device 6 is disposed on the first moving device 2 and can move up and down on the first moving device 2. The bottom of the loading device 6 is connected to the rutting wheel 7. The test surface can be a rutting plate 8, and the rutting wheel 7 moves on the rutting plate 8. The loading device 6 can continuously apply a load to the rutting wheel 7. The loading device 6 can move up and down on the first moving device 2, so that loading devices 6 of different weights can apply forces to the rutting plate 8 through the rutting wheel 7. The rutting wheel 7 can adjust its displacement in the vertical direction with the loading device 6, and the load is applied to the rutting plate 8 through the rutting wheel 7.

[0065] The first moving device 2 is mounted on the second moving device 4. The first moving device 2 can move along the first direction 3, driving the loading device 6 and the rutted wheel 7 to move together along the first direction 3. The second moving device 4 can move along the second direction 5, driving the first moving device 2, the loading device 6, and the rutted wheel 7 to move together along the second direction 5. There is an angle between the second direction 5 and the first direction 3. Since the rutted wheel 7 can move along the first direction 3 via the first moving device 2 and along the second direction 5 via the second moving device 4, the rutted wheel 7 forms a trajectory in a composite direction on the surface of the rutted slab 8, which can express the overall degree of damage to the road surface.

[0066] The first moving device 2 includes a first platform 21 and a first driving mechanism 22. A loading device 6 is mounted on the first platform 21 and can move vertically and vertically on it. The first driving mechanism 22 is mounted on the second moving device 4, and its movable end is connected to the first platform 21 and used to drive the first platform 21 to move along a first direction 3. The first driving mechanism 22 provides driving force and drives the first platform 21 to move along the first direction 3. The movement of the first platform 21 drives the loading device 6 and the wheel 7 to move together along the first direction 3. The overall structure is simple and easy to install.

[0067] In this embodiment, the first drive mechanism 22 includes a first motor 221 and a single shaft 222. The first motor 221 is mounted on the second moving device 4. One end of the single shaft 222 is connected to the first motor 221, and the other end of the single shaft 222 is connected to the first platform 21. The first motor 221 drives the first platform 21 to move along the first direction 3 through the single shaft 222. This makes the displacement control of the first platform 21 more precise. The separable design of the first platform 21, the single shaft 222 and the first motor 221 facilitates the maintenance and replacement of parts, and reduces maintenance time and cost.

[0068] Of course, in other embodiments, the first motor 221 can be other types of drive devices such as cylinders or hydraulic cylinders.

[0069] The loading device 6 includes a counterweight 61 and a connector 62. The counterweight 61 is mounted on the first platform 21 and can move up and down on the first platform 21. The first platform 21 has a through hole. The top of the connector 62 is above the counterweight 61, the connector 62 passes through the through hole, and the bottom of the connector 62 is connected to the wheel 7. The weight of the loading device 6 can be adjusted by the counterweight 61. When the counterweight 61 moves up and down on the first platform 21, the wheel 7 moves up and down with the counterweight 61. At the same time, the connector 62 passes through the through hole, and the first platform 21 provides a stable lifting guide platform for the loading device 6 through the through hole, preventing the loading device 6 from shifting during the application of pressure, thus ensuring high stability.

[0070] The loading device 6 also includes at least one guide member 63. The first platform 21 has at least one guide groove 64. One end of the guide member 63 is connected to the bottom of the counterweight 61, and the other end of the guide member 63 is inserted into the guide groove 64 and can move vertically up and down relative to the first platform 21. The presence of the guide member 63 can limit the offset of the counterweight 61 during the loading process, so that the counterweight 61 can apply the load more smoothly during the movement.

[0071] The guide member 63 is a metal rod, and there are two of them, symmetrically arranged on both sides of the through hole. It should be noted that, depending on actual needs, the number of guide members 63 can be one or more, and the number is not limited.

[0072] The second moving device 4 includes a second platform 41 and a second driving mechanism 42. The movable end of the second driving mechanism 42 is connected to the second platform 41 and is used to drive the second platform 41 to move along the second direction 5. The first platform 21 is disposed on the second platform 41. Since the first platform 21 is disposed on the second platform 41, the first platform 21 not only moves along the first direction 3, but also the second driving mechanism 42 provides driving force and drives the second platform 41 to move along the second direction 5. The first platform 21 also moves along the second direction 5 with the second platform 41, so that the running trajectory of the rutted wheel 7 changes from a single-direction trajectory to a composite-direction trajectory, which can express the overall degree of damage to the road surface.

[0073] In this embodiment, the second drive mechanism 42 includes a second motor 421 and a lead screw 422. One end of the lead screw 422 is connected to the second motor 421, and the second platform 41 is threaded to the lead screw 422. The second motor 421 drives the second platform 41 to move along the second direction 5 by rotating the lead screw 422. The transmission method is simple and the displacement control is more precise.

[0074] like Figure 1 As shown, a first guide structure 23 is provided between the first platform 21 and the second platform 41. The first guide structure 23 has a guiding function. By setting the first guide structure 23, the first platform 21 and the second platform 41 are slidably connected. The first platform 21 moves along the first guide structure 23 in the first direction 3, so that the first platform 21, the loading device 6 and the wheel 7 move more stably and reliably in the first direction 3.

[0075] Specifically, the first guide structure 23 includes a first slide rail 231 and a plurality of first sliders 232. The first slide rail 231 is disposed on the top surface of the second platform 41, and the plurality of first sliders 232 are evenly disposed on the bottom surface of the first platform 21. The plurality of first sliders 232 are connected to the first slide rail 231 and can move on the first slide rail 231. The first guide structure 23 slidably connects the first platform 21 and the second platform 41 into one unit, so that the first platform 21 moves along the first guide structure 23 in the first direction 3. At the same time, the first platform 21 moves with the second platform 41 in the second direction 5. The load-bearing capacity and stability of the first platform 21 during movement are significantly improved.

[0076] In this embodiment, there are two first guide structures 23, which are respectively disposed on both sides of the first platform 21. This provides two vertical supports for both sides of the first platform 21, allowing the first platform 21 to move more stably along the first guide structures 23 in the first direction 3.

[0077] like Figure 1As shown, a second guide structure 43 is provided at the bottom of the second platform 41. The second guide structure 43 has a guiding function. By setting the second guide structure 43, the second platform 41 is slidably connected to the support surface. The second platform 41 moves along the second guide structure 43 in the second direction 5, so that the movement of the second platform 41, the first platform 21, the loading device 6 and the wheel 7 in the second direction 5 is more stable and reliable.

[0078] Specifically, the second guide structure 43 includes a second slide rail 431 and a second slider 432. The second slide rail 431 is disposed on the support surface, and a plurality of second sliders 432 are evenly disposed on the bottom surface of the second platform 41. The plurality of second sliders 432 are connected to the second slide rail 431 and can move on the second slide rail 431, so that the second platform 41 moves along the second guide structure 43 in the second direction 5, and the load-bearing capacity and stability of the second platform 41 during movement are significantly improved.

[0079] In this embodiment, there are two second guide structures 43, which are respectively disposed at both ends of the second platform 41. This provides vertical support to both ends of the second platform 41, allowing the second platform 41 to move more stably along the second guide structures 43 in the second direction 5.

[0080] like Figure 1 As shown, the loading device 6 passes through the second platform 41. Specifically, the connector 62 of the loading device 6 passes through the second platform 41 and connects to the rut wheel 7. During the movement of the first moving device 2 and the second moving device 4, the loading device 6 passes through the second platform 41 and connects to the rut wheel 7, continuously applying the load to the rut wheel 7 and transmitting it to the rut plate 8, ensuring that the rut wheel 7 moves unimpeded along the first direction 3 and the second direction 5. Simultaneously, the loading device 6 passing through the first platform 21 and the second platform 41 makes the overall structure of the comprehensive rutting test equipment 1 more compact and occupies less space.

[0081] In this embodiment, the first direction 3 and the second direction 5 are perpendicular to each other. The first platform 21 and the wheel 7 move along the second direction 5 with the second platform 41, so that the wheel 7 moves both left and right along the first direction 3 and forward and backward along the second direction 5. The trajectory of the wheel 7 is formed by the combination of the perpendicular first direction 3 and the second direction 5. Of course, in other embodiments, the specific movement directions of the first direction 3 and the second direction 5 are not limited.

[0082] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A comprehensive rutting test device, characterized in that, It includes a first moving device, a second moving device, a rutted wheel, and a loading device. The rutted wheel is placed on the test surface. The loading device is disposed on the first moving device and can move up and down on the first moving device. The bottom of the loading device is connected to the rutted wheel. The first moving device is disposed on the second moving device and can move along a first direction, driving the loading device and the rutted wheel to move together along the first direction. The second moving device can move along a second direction, driving the first moving device, the loading device, and the rutted wheel to move together along the second direction. There is an angle between the second direction and the first direction.

2. The full-range rutting test equipment as described in claim 1, characterized in that, The first mobile device includes a first platform and a first drive mechanism. The loading device is disposed on the first platform and can move up and down on the first platform. The first drive mechanism is disposed on the second mobile device, and the movable end of the first drive mechanism is connected to the first platform and is used to drive the first platform to move along the first direction.

3. The full-range rutting test equipment as described in claim 2, characterized in that, The loading device includes a counterweight and a connector. The counterweight is placed on the first platform and can move up and down on the first platform. The first platform has a through hole. The top of the connector is connected to the counterweight, the connector passes through the through hole, and the bottom of the connector is connected to the wheel.

4. The full-range rutting test equipment as described in claim 3, characterized in that, The loading device further includes at least one guide member. The first platform has at least one guide groove. One end of the guide member is connected to the bottom of the counterweight, and the other end of the guide member is inserted into the guide groove and can move vertically up and down relative to the first platform.

5. The full-range rutting test equipment as described in claim 2, characterized in that, The second mobile device includes a second platform and a second drive mechanism. The movable end of the second drive mechanism is connected to the second platform and is used to drive the second platform to move along the second direction. The first platform is disposed on the second platform.

6. The full-range rutting test equipment as described in claim 5, characterized in that, A first guide structure is provided between the first platform and the second platform; And / or, a second guide structure is provided at the bottom of the second platform.

7. The full-range rutting test equipment as described in claim 6, characterized in that, The first guide structure includes a first slide rail and a plurality of first sliders. The first slide rail is disposed on the top surface of the second platform, and the plurality of first sliders are evenly disposed on the bottom surface of the first platform. The plurality of first sliders are connected to the first slide rail and are able to move on the first slide rail. And / or, the second guide structure includes a second slide rail and a second slider, the second slide rail is disposed on the support surface, a plurality of second sliders are evenly disposed on the bottom surface of the second platform, and the plurality of second sliders are connected to the second slide rail and are able to move on the second slide rail.

8. The full-range rutting test equipment as described in claim 6, characterized in that, There are two first guide structures, and the two first guide structures are respectively disposed on both sides of the first platform; And / or, the number of the second guide structures is two, and the two second guide structures are respectively disposed at both ends of the second platform.

9. The full-range rutting test equipment as described in claim 5, characterized in that, The loading device passes through the second platform.

10. The full-scale rutting test equipment as described in claim 1, characterized in that, The first direction and the second direction are perpendicular to each other.

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