Rut tester capable of easily changing wheel pressure

Abstract

The utility model relates to the technical field of rut test tools, and discloses a rut tester capable of easily changing wheel pressure, which comprises a shell, the counterweight mechanism comprises a front baffle plate arranged on one side of the shell and a rear baffle plate arranged on the other side of the shell, the positions of the front baffle plate and the rear baffle plate are correspondingly arranged when the front baffle plate and the rear baffle plate are mounted, a plurality of counterweight blocks are placed between the front baffle plate and the rear baffle plate, the front baffle plate, the rear baffle plate and the counterweight blocks are detachably mounted, and a space is reserved between every two adjacent counterweight blocks; the rut plate container comprises a shell, a carrying plate is connected to the shell in a sliding mode, and a rut plate is placed in the carrying plate; and the wheel load structure is located between the counterweight mechanism and the rut plate container, and when a test is carried out, the top surface of the wheel load structure is in contact with the bottom of a counterweight block of the counterweight mechanism, and the bottom of the wheel load structure is in contact with the rut plate. According to the rut tester disclosed by the utility model, not only can the safety be ensured, but also the convenience in a test process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rutting test tooling, in particular to a rutting tester which is easy to change wheel pressure. Background Art

[0002] Asphalt mixture is a viscoelastic material, and its physical and mechanical properties are closely related to temperature and load. When asphalt mixture is subjected to high temperature or long-term load, it will produce significant deformation, and the part that cannot be restored is called permanent deformation. The resulting rutting will reduce the performance of the road surface, endanger driving safety, and thus shorten the service life of the asphalt pavement. Rutting is one of the most harmful forms of damage to asphalt pavement and is also an important research topic for highway technicians around the world.

[0003] Indoor rutting test is a good means to evaluate the anti-rutting performance of asphalt mixture, and can test whether the high-temperature anti-rutting performance of the designed asphalt mixture meets the requirements. The standard rutting test process is as follows: after checking the equipment, determining the load and wheel pressure area, raise the test wheel, put the prepared rutting specimen in, the walking direction of the test wheel is consistent with the molding direction of the specimen, fix the specimen, lower the test wheel, adjust the sensor, turn on the machine to set the test parameters, keep warm for more than 5 hours, and then start the test. The system automatically records the deformation at 45 minutes and 60 minutes, and calculates the dynamic stability to evaluate the high-temperature stability of the asphalt mixture.

[0004] Due to the complex causes of rutting and the many influencing factors, the standard test wheel pressure of 0.7Mpa, temperature of 60℃, and test axle load times of 2520 times cannot meet the general practical applicability. Therefore, considering the actual temperature, traffic volume, vehicle type and other factors in the region, more and more research has been conducted in recent years on changing the wheel pressure, temperature, and axle load times. The way to change the wheel pressure is to adjust the weight of the counterweight block above the test wheel. The increase and decrease of the counterweight block needs to be done manually, and the constant increase and decrease wastes a lot of time. In addition, the danger caused by the heavy weight is self-evident. At the same time, many scholars are currently studying the rutting performance of different thicknesses, or studying large-particle asphalt mixtures, which leads to an increase in the thickness of the rutting plate and also increases the weight. When conducting rutting tests, the instrument needs to be lifted in, which is easy to pinch the hands and hurt the waist. Even if the test personnel are careful, the danger cannot be ignored. The above two situations will bring safety problems during the test.

[0005] Therefore, a rutting tester that is easy to change wheel pressure is urgently needed to solve the above problems. Utility Model Content

[0006] The utility model aims to provide a wheel rutting tester which is easy to change wheel pressure, so as to solve the problems existing in the prior art, reduce the risk in the test process and improve the safety.

[0007] To achieve the above object, the utility model provides the following solution: The utility model provides a rutting tester that is easy to change wheel pressure, comprising:

[0008] shell;

[0009] A counterweight mechanism, comprising a front baffle plate arranged on one side of the shell and a rear baffle plate arranged on the other side of the shell, wherein the positions of the front baffle plate and the rear baffle plate when installed are correspondingly arranged, a plurality of counterweight blocks are placed between the front baffle plate and the rear baffle plate, the front baffle plate, the rear baffle plate and the counterweight blocks are detachably installed, and there is a spacing between adjacent counterweight blocks;

[0010] The rutting plate container comprises a shell, a loading plate is slidably connected to the shell, and the rutting plate is placed in the loading plate;

[0011] The wheel load structure is located between the counterweight mechanism and the rutting plate container. During the test, the top surface of the wheel load structure contacts the bottom of the counterweight block of the counterweight mechanism, and the bottom of the wheel load structure contacts the rutting plate.

[0012] Preferably, the front baffle is symmetrically provided with a plurality of sliding holes; the rear baffle is symmetrically provided with a plurality of threaded holes; and the counterweight block is symmetrically provided with through holes;

[0013] It also includes a fastener, which passes through the sliding hole, the through hole and the threaded hole in sequence to connect the front baffle, the counterweight block and the rear baffle.

[0014] Preferably, a protrusion is provided on one side of the counterweight block, and a groove I is provided on the other side. When conducting a test, the protrusions and grooves I of adjacent counterweight blocks fit together.

[0015] Preferably, a slide rail is fixedly installed in the shell, a slider is fixedly installed on one side of the loading plate, and the slider is slidably connected in the slide rail.

[0016] Preferably, a groove II is provided on the loading plate at a side away from the slide rail, and the rutting plate is placed in the groove II.

[0017] Preferably, it further comprises a plurality of fixing bolts, wherein the fixing bolts penetrate through the housing and contact the rutting plate, and the fixing bolts are symmetrically arranged on both sides of the rutting plate.

[0018] Preferably, a handle is fixedly mounted on the loading plate.

[0019] Preferably, the fastener is a baffle bolt.

[0020] Preferably, a control component is also included, and the control component includes:

[0021] The utility model discloses the following technical effects: the rutting tester disclosed by the utility model is provided with a front baffle and a rear baffle, and the counterweight block is detachably installed therebetween, so that when it is necessary to adjust the wheel pressure, that is, to adjust the number of counterweight blocks, the counterweight blocks at the corresponding positions can be dropped for testing by removing the connection between the counterweight blocks, the front baffle and the rear baffle, so that there is no need for manual transportation for adjustment, which reduces the risk during transportation and improves the convenience of the test; furthermore, the rutting plate used in the test process is directly placed in the rutting plate container, so that when it is necessary to replace the rutting plate, the loading plate can be directly pulled out and the rutting plate can be placed in it, and there is no need to manually place the rutting plate into the test instrument, which avoids unnecessary personal injury and also improves safety. The rutting tester disclosed in the present application can not only ensure safety, but also improve the convenience during the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is the overall structure diagram of the rutting tester;

[0024] Figure 2 is a structural schematic diagram of a counterweight mechanism;

[0025] Figure 3 It is a schematic diagram of the structure of the front and rear baffles;

[0026] Figure 4 It is a structural schematic diagram of the baffle bolt;

[0027] Figure 5 It is a schematic diagram of the raised structure of the counterweight;

[0028] Figure 6 It is a schematic diagram of the structure of groove I of the counterweight;

[0029] Figure 7 A schematic diagram of the structure for adapting the protrusion and the groove Ⅰ;

[0030] Figure 8 is a schematic diagram of the structure of the carrier plate and the shell;

[0031] Fig. 9 A schematic diagram of the structure in which a rutting plate is placed in a rutting plate container;

[0032] Fig.10 It is a schematic diagram of the structure of the carrier plate and the back of the shell;

[0033] Among them, 1. shell; 2. control panel; 3. front baffle; 4. sliding hole; 5. rear baffle; 6. threaded hole; 7. baffle bolt; 8. counterweight; 81. protrusion; 82. groove I; 9. through hole; 10. slide rail; 11. fixing bolt; 12. loading plate; 13. groove II; 14. wheel-carrying structure; 141. lifting member; 142. sensor; 143. test wheel; 15. rutting plate container; 16. handle; 17. mounting plate; 18. shell; 19. slider; 20. rotation controller; 21. load-bearing plate; 22. test wheel support plate; 23. slide bar. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0036] Reference Figure 1-Figure 10 The utility model provides a rutting tester which is easy to change wheel pressure, comprising:

[0037] Shell 1;

[0038] A counterweight mechanism, comprising a front baffle plate 3 arranged on one side of the housing 1 and a rear baffle plate 5 arranged on the other side of the housing 1, wherein the front baffle plate 3 and the rear baffle plate 5 are arranged in corresponding positions when installed, and a plurality of counterweight blocks 8 are placed between the front baffle plate 3 and the rear baffle plate 5, wherein the front baffle plate 3, the rear baffle plate 5 and the counterweight blocks 8 are detachably installed, and there is a spacing between adjacent counterweight blocks 8;

[0039] The rutting plate container 15 comprises a shell 18, on which a carrier plate 12 is slidably connected, and a rutting plate is placed in the carrier plate 12;

[0040] The wheel-loaded structure 14 is located between the counterweight mechanism and the rutting plate container 15. During the test, the top surface of the wheel-loaded structure 14 contacts the bottom of the counterweight block 8 of the counterweight mechanism, and the bottom of the wheel-loaded structure 14 contacts the rutting plate.

[0041] Specifically, Figure 1-Figure 2As shown, the spacing between the front baffle plate 3 and the rear baffle plate 5 is the width of the counterweight block 8, and in order to facilitate the observation of the structural parts during the test, a transparent glass or acrylic plate is installed at the front end of the shell 1, so that the test personnel can observe the changes of the structural parts in the shell 1 at any time. The wheel-loaded structure and the lifting member refer to the existing wheel tracker. First, the shell is assembled from the bottom, left and right, and the rear, leaving space for installing the wheel-loaded structure. Then, the wheel-loaded structure is installed and connected and fixed with the bottom and left and right side structures of the shell, and finally the front and upper shell are installed. At the same time, the wheel-loaded structure 14 includes a mounting plate 17, on which a test wheel 143 is installed, and a lifting member 141 is installed above the mounting plate 17. The lifting member 141 refers to the front baffle plate 3, the rear baffle plate 5, and the sliding hole 4 and threaded hole 6 on the plate, plus the baffle bolts 7 and the counterweight block 8, and the lower contact bearing plate 21, which is connected to the test wheel 143. A sensor 142 is installed on the lifting member 141, wherein the lifting member 141 and the sensor 142 are electrically connected to the control panel 2. The sensor 142 can measure the rutting deformation in real time according to its own vertical displacement, which is convenient for control; the test wheel support plate 22 plays a connecting force transmission role, transmitting the upper force to the lower test wheel 143. When conducting the test, the tester rotates the rotary controller 20 to make the lifting member 141 rise until the support plate on the lifting member 141 contacts the bottom counterweight block 8, and then selects the number of counterweight blocks 8 according to the requirements of the test. After completion, the control panel 2 is controlled to make the lifting member 141 descend until the test wheel 143 contacts the rutting plate. During the entire ascending and descending process, the test wheel support plate 22 remains stationary, and the lower test wheel 143 rises and descends with the lifting member 141. Then, the test is conducted, and the test wheel support plate 22 drives the wheel-bearing structure 14 to perform multiple reciprocating movements of a specified distance along the direction of the slide bar 23 through the control panel to simulate rutting. The rutting tester disclosed in the present application is provided with a front baffle plate 3 and a rear baffle plate 5, and the counterweight block 8 is detachably installed therebetween. In this way, when it is necessary to adjust the wheel pressure, that is, to adjust the number of counterweight blocks 8, the counterweight blocks 8 at the corresponding positions can be dropped for testing by removing the connection between the counterweight blocks 8, the front baffle plate 3 and the rear baffle plate 5. In this way, there is no need for manual transportation for adjustment, which reduces the risk during transportation and improves the convenience of the test. Furthermore, the rutting plate used in the test process is directly placed in the rutting plate container 15. In this way, when it is necessary to replace the rutting plate, the loading plate 12 can be directly pulled out and the rutting plate can be placed in it. There is no need to manually place the rutting plate into the test instrument, which avoids unnecessary personal injury and also improves safety. The rutting tester disclosed in the present application can not only ensure safety, but also improve the convenience during the test.

[0042] According to a further optimized solution, the front baffle plate 3 is symmetrically provided with a plurality of sliding holes 4; the rear baffle plate 5 is symmetrically provided with a plurality of threaded holes 6; and the counterweight block 8 is symmetrically provided with through holes 9;

[0043] It also includes a fastener, which passes through the sliding hole 4, the through hole 9 and the threaded hole 6 in sequence to connect the front baffle 3, the counterweight block 8 and the rear baffle 5.

[0044] Furthermore, the fastener is a baffle bolt 7.

[0045] Specifically, Figure 2-Figure 5 As shown, in order to facilitate the adjustment of the number of counterweights 8 and thus adjust different wheel pressures, fasteners are used to support the counterweights 8, that is, when no test is performed, the counterweights 8 are fixed between the front baffle 3 and the rear baffle 5, so that they will not apply wheel pressure to the wheel-loaded structure 14. When a test is required, the fasteners can be removed from bottom to top in sequence. When a fastener is removed, a counterweight 8 will fall off. In this way, a corresponding number of fasteners can be removed according to the needs of different counterweights. In this way, there is no need to manually carry the counterweights 8 and then place them on the wheel-loaded structure 14, reducing the risk of injury to personnel during the test. The number of counterweights 8 is preferably 5, each weighing about 20 kg, and the number of sliding holes 4, through holes 9 and threaded holes 6 is adjusted according to the number of counterweights 8. Furthermore, during fixed installation, the other side of the baffle bolt 7 is threaded with a nut to ensure its firmness.

[0046] According to a further optimized solution, a protrusion 81 is provided on one side of the counterweight block 8, and a groove I82 is provided on the other side. When conducting a test, the protrusions 81 and grooves I82 of adjacent counterweight blocks 8 are matched.

[0047] Specifically, Figure 5-Figure 7 As shown, in order to ensure that adjacent counterweight blocks 8 can be stably fitted when they fall, a groove Ⅰ82 is opened on one side of the counterweight block 8, and a protrusion 81 is integrally formed on the other side thereof. When adjacent counterweight blocks 8 are fitted, the protrusion 81 on the adjacent counterweight blocks 8 fits with the groove Ⅰ82, that is, the counterweight blocks 8 adopt a mortise and tenon structure, which can be stably connected, thereby preventing the upper counterweight block 8 from sliding due to inertia during the test, thereby increasing safety.

[0048] According to a further optimized solution, a slide rail 10 is fixedly installed in the housing 18 , and a slider 19 is fixedly installed on one side of the loading plate 12 , and the slider 19 is slidably connected in the slide rail 10 .

[0049] Furthermore, a handle 16 is fixedly mounted on the loading plate 12 .

[0050] Specifically, Figure 8-Figure 10 As shown, the carrier plate 12 is slidably connected to the housing 18, that is, the carrier plate 12 is configured as a push-pull carrier plate 12 for pushing and pulling the track plate. The slide rail 10 is configured to facilitate pushing and pulling, replacing traditional manual operation and increasing safety.

[0051] According to a further optimized solution, a groove II 13 is provided on the loading plate 12 at a side away from the slide rail 10 , and the rutting plate is placed in the groove II 13 .

[0052] Specifically, Figure 8 As shown, a groove II 13 is provided on the carrier plate 12 so that the rutting plate can be placed therein, and at the same time the stability of the rutting plate can be ensured to prevent it from moving randomly.

[0053] A further optimized solution further includes a plurality of fixing bolts 11 , which penetrate through the housing 18 and contact the rutting plate, and the fixing bolts 11 are symmetrically arranged on both sides of the rutting plate.

[0054] Specifically, Fig. 9 As shown, fixing bolts 11 are provided to fix the rutting plate to ensure stability during the test and increase accuracy.

[0055] When conducting the test, first determine the wheel pressure required for the test, determine the number of counterweights 8 required, raise the wheel load structure 14 to the top surface and stably contact the bottom surface of the lowest counterweight 8 to prevent the counterweight 8 from falling after the baffle bolts 7 are screwed out, screw out the baffle bolts 7 supporting the counterweight 8 from the bottom to the top, and place the removed baffle bolts 7 next to the rutting tester. Screw out the baffle bolts 7 in the lower rows as many counterweights 8 as needed. Screwing them out from the bottom to the top is to avoid the situation where a pair of baffle bolts 7 bears multiple counterweights 8 to avoid damage. The wheel load structure 14 rises to leave a corresponding height for the placement of the rutting plate, and pull out the load Place the prepared rutting plate specimen in the groove, push the loading plate 12 so that the center line of the rutting plate is below the test wheel 143, tighten the fixing bolts 11 to fix the loading plate 12, and lower the wheel loading structure 14. At this time, there are the required number of counterweights 8 above the wheel loading structure 14, and the remaining counterweights 8 remain between the upper front baffle 3 and the rear baffle 5. Set the test temperature, test duration and other parameters through the control panel 2, turn on the insulation, and keep the insulation at the test temperature for not less than five hours, then start the test, and record the data you need through the content displayed on the control panel 2 for subsequent calculations. After the test is completed, wait for the temperature to drop, raise the wheel load structure 14, and make the top surface of the top counterweight block 8 of the wheel load structure 14 connect with the bottom surface of the remaining counterweight block 8 of the baffle. If no further tests are performed subsequently, insert the baffle bolts 7 to fix it. If the test is continued under the same wheel load, no adjustment is required. If the wheel load needs to be changed for testing, unscrew some of the remaining baffle bolts 7 from bottom to top as needed to increase the counterweight, or tighten some baffle bolts 7 from top to bottom to reduce the counterweight, then loosen the fixing bolts 11, pull out the loading plate 12, and take out the rutting plate. Then perform subsequent tests as needed, repeat the above process, and after completing all tests, fix all counterweight blocks 8 and turn off the machine.

[0056] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0057] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A wheel rutting tester that is easy to change wheel pressure, characterized in that: include: Housing (1); A counterweight mechanism comprises a front baffle (3) arranged on one side of the housing (1) and a rear baffle (5) arranged on the other side of the housing (1), wherein the front baffle (3) and the rear baffle (5) are arranged in corresponding positions when installed, a plurality of counterweight blocks (8) are placed between the front baffle (3) and the rear baffle (5), the front baffle (3), the rear baffle (5) and the counterweight blocks (8) are detachably installed, and there is a spacing between adjacent counterweight blocks (8); A wheel rutting plate container (15) comprises a shell (18), a carrier plate (12) is slidably connected to the shell (18), and a wheel rutting plate is placed inside the carrier plate (12); A wheel load structure (14), the wheel load structure (14) is located between the counterweight mechanism and the rutting plate container (15), when the test is carried out, the top surface of the wheel load structure (14) contacts the bottom of the counterweight block (8) of the counterweight mechanism, and the bottom of the wheel load structure (14) contacts the rutting plate.

2. The wheel rutting tester with easy wheel pressure change according to claim 1, characterized in that: The front baffle (3) is symmetrically provided with a plurality of sliding holes (4); the rear baffle (5) is symmetrically provided with a plurality of threaded holes (6); and the counterweight (8) is symmetrically provided with through holes (9); It also includes a fastener, which passes through the sliding hole (4), the through hole (9) and the threaded hole (6) in sequence to connect the front baffle (3), the counterweight (8) and the rear baffle (5).

3. The wheel rutting tester with easy wheel pressure change according to claim 1, characterized in that: The counterweight block (8) is provided with a protrusion (81) on one side and a groove I (82) on the other side. When testing, the protrusions (81) and grooves I (82) of adjacent counterweight blocks (8) are matched.

4. The wheel rutting tester with easy wheel pressure change according to claim 1, characterized in that: A slide rail (10) is fixedly installed in the housing (18), a slider (19) is fixedly installed on one side of the object carrier (12), and the slider (19) is slidably connected in the slide rail (10).

5. The wheel rutting tester with easy wheel pressure change according to claim 4, characterized in that: A groove II (13) is provided on the loading plate (12) at a side away from the slide rail (10), and the wheel track plate is placed in the groove II (13).

6. The wheel rutting tester with easy wheel pressure change according to claim 1 or 5, characterized in that: It also includes a plurality of fixing bolts (11), the fixing bolts (11) passing through the housing (18) and contacting the rutting plate, and the fixing bolts (11) are symmetrically arranged on both sides of the rutting plate.

7. The wheel rutting tester with easy wheel pressure change according to claim 6, characterized in that: A handle (16) is fixedly mounted on the loading plate (12).

8. The wheel rutting tester with easy wheel pressure change according to claim 2, characterized in that: The fastener is a baffle bolt (7).

9. The wheel rutting tester with easy wheel pressure change according to claim 1, characterized in that: Also included is a control component, the control component comprising: A control panel (2), wherein the control panel (2) is fixedly mounted on the outside of the housing (1), and the control panel (2) is electrically connected to the wheel-mounted structure (14).

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