Snow melting performance testing device for asphalt pavement material

Abstract

The utility model relates to the technical field of test devices, in particular to an asphalt pavement material snow melting performance test device which comprises a test box used for testing the snow melting performance of an asphalt pavement sample, a test opening is formed in the test box, a conveying unit is arranged at the test opening, a test bed is arranged at the conveying end of the conveying unit, and the asphalt pavement sample is arranged on the test bed. A test cover, a snowmaker, a snow pressing wheel and a blower are arranged in the test box, a snow conveying hose is arranged at the snow conveying end of the snowmaker, a snow conveying nozzle is arranged at the snow conveying end of the snow conveying hose, a snow pressing unit is arranged in the test box, the snow pressing wheel is arranged at the output end of the snow pressing unit and connected with the snow conveying nozzle, an air conveying hose is arranged at the air conveying end of the blower, and the air conveying hose is connected with the snow conveying nozzle. And an air conveying nozzle is arranged at the air conveying end of the air conveying hose. According to the utility model, the snow melting performance test can be carried out on the asphalt road sample under the wind power environment, and the snow melting performance test can also be carried out on the asphalt road sample under the condition that snow is compacted.

Description

Technical Field

[0001] The utility model relates to the technical field of test devices, in particular to a test device for the snow melting performance of asphalt pavement materials. Background Technique

[0002] An asphalt pavement refers to various types of pavements paved with road asphalt materials incorporated into mineral materials. The asphalt binder improves the ability of the granular materials used for paving to resist damage to the pavement caused by driving and natural factors, making the pavement flat, less dusty, waterproof and durable. Therefore, asphalt pavement is a widely used high-grade pavement in road construction.

[0003] The utility model patent with the publication number of CN218272074U discloses a test device for the anti-icing and snow melting performance of phase change asphalt mixture, including a high and low temperature test chamber. A monitoring terminal and a mobile device terminal are arranged outside the high and low temperature test chamber. Inside the bottom surface of the high and low temperature test chamber, a phase change test chamber and a control test chamber are fixedly installed. Phase change material specimens and reference specimens are respectively placed inside the phase change test chamber and the control test chamber. By using the high and low temperature test chamber in combination with the phase change test chamber, the control test chamber and other component structures, a special test device can be provided for the anti-icing and snow melting performance of the phase change asphalt mixture. By comparing the snow melting amounts of the phase change material and the reference material, the strength of the anti-icing and snow melting performance of the phase change asphalt mixture can be highlighted, providing a more favorable solution strategy for winter road snow melting and ice removal. At the same time, the whole device can realize automatic operation, which is efficient and fast, and the data information can be viewed online.

[0004] However, the above patent still has deficiencies: 1. It is inconvenient to take and place the test samples in this patent. Since the weight of the test samples is relatively large, it is difficult to take out the test samples after they are placed in the test chamber. If there are gaps left in the test chamber, snow will enter the gaps, affecting the accuracy of the snow melting test data of the test samples; 2. This patent cannot conduct snow melting tests on the test samples under different wind environments and when the snow is compacted. Summary of the Utility Model

[0005] In order to make up for the above deficiencies, the utility model provides a test device for the snow melting performance of asphalt pavement materials to solve the problems of inconvenient taking and placing of test samples and inability to conduct snow melting tests on test samples under different wind environments and when the snow is compacted as mentioned in the above background technique.

[0006] The technical solution of the utility model is as follows:

[0007] An asphalt pavement material snow melting performance test device, including a test box for testing the snow melting performance of asphalt road samples. There is a test opening on the test box, and a conveying unit is provided at the test opening. A test bench is provided at the conveying end of the conveying unit, and the asphalt road sample is arranged on the test bench. Inside the test box, there are a test cover, a snow maker, a snow pressing wheel and a hair dryer. The snow output end of the snow maker is provided with a snow conveying hose, and the snow output end of the snow conveying hose is provided with a snow output nozzle. Inside the test box, there is a snow pressing unit, and the snow pressing wheel is arranged at the output end of the snow pressing unit. The snow pressing wheel is connected to the snow output nozzle. The air output end of the hair dryer is provided with an air conveying hose, and the air output end of the air conveying hose is provided with an air output nozzle.

[0008] Preferably, the conveying unit includes a first electric slide rail and a first electric push rod. The first electric slide rails are symmetrically arranged at the test opening, the first electric push rod is arranged on the sliding end of the first electric slide rail, and the test bench is arranged on the telescopic ends of the two first electric push rods.

[0009] Preferably, a test groove is arranged on the top of the test bench, the asphalt road sample is arranged inside the test groove, and a drain pipe is arranged at the bottom of the test bench. The drain pipe is communicated with the test groove.

[0010] Preferably, test holes are arranged inside the test cover. The bottom of the test holes is communicated with the top of the test bench, and two electric cover doors are symmetrically arranged at the top of the test holes.

[0011] Preferably, the snow pressing unit includes a second electric push rod, a second electric slide rail and a third electric slide rail. The second electric slide rail is arranged on the telescopic end of the second electric push rod, and the third electric slide rail is arranged on the sliding end of the second electric slide rail.

[0012] Preferably, the snow pressing unit further includes a pressure sensor. The pressure sensor is arranged on the sliding end of the third electric slide rail, and the snow pressing wheel is arranged on the sensing end of the pressure sensor.

[0013] Preferably, air inlet holes and air outlet holes are arranged on the test cover. An air inlet filter screen is arranged inside the air inlet holes, and an air outlet filter screen is arranged inside the air outlet holes.

[0014] Preferably, two third electric push rods are symmetrically arranged on the hair dryer. The air output nozzle is arranged on the telescopic ends of the two third electric push rods, and the air output nozzle abuts against the air inlet filter screen.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] First, the utility model conveys the asphalt road sample on the test bench from the test port to the test cover inside the test box through the conveying unit, thus facilitating the picking and placing of the asphalt road sample.

[0017] Second, the utility model conveys the wind to the air outlet connected to the air delivery hose through the hair dryer, so as to conduct the snow melting performance test of the asphalt road sample under the wind environment. At the same time, by controlling the height of the air outlet through the third electric push rod, it can ensure that the wind output by the air outlet is accurately conveyed to the snow surface.

[0018] Third, the utility model drives the snow pressing wheel to compact the snow on the asphalt road sample through the cooperation of the second electric push rod, the second electric slide rail, the third electric slide rail and the pressure sensor, so as to conduct the snow melting performance test of the asphalt road sample under the condition of snow being compacted. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structure schematic diagram of the snow melting performance test device for asphalt pavement materials of the utility model;

[0020] Figure 2 is a partial three-dimensional first perspective structure schematic diagram of the snow melting performance test device for asphalt pavement materials of the utility model;

[0021] Figure 3 is a partial three-dimensional second perspective structure schematic diagram of the snow melting performance test device for asphalt pavement materials of the utility model;

[0022] Figure 4 is a partial three-dimensional first perspective structure schematic diagram of the test bench, the asphalt road sample and the snow pressing unit of the utility model;

[0023] Figure 5 is a partial three-dimensional second perspective structure schematic diagram of the test bench and the snow pressing unit of the utility model.

[0024] In the figure:

[0025] 1. Asphalt road sample; 2. Test box; 21. Test port; 3. Test bench; 31. Test groove; 32. Drain pipe; 4. Test cover; 41. Test hole; 42. Electric cover door; 43. Inlet air filter screen; 44. Outlet air filter screen; 5. Snow maker; 51. Snow delivery hose; 52. Snow outlet; 6. Snow pressing wheel; 61. Second electric push rod; 62. Second electric slide rail; 63. Third electric slide rail; 64. Pressure sensor; 7. Hair dryer; 71. Air delivery hose; 72. Air outlet; 8. First electric slide rail; 81. First electric push rod; 9. Third electric push rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] Please refer to Figures 1 to 5 , and the present utility model details the above technical solutions through the following embodiments:

[0028] A snow melting performance test device for asphalt pavement materials includes a test box 2 for testing the snow melting performance of an asphalt road sample 1. A test port 21 is provided on the test box 2, and a conveying unit is provided at the test port 21. A test bench 3 is provided at the conveying end of the conveying unit. The asphalt road sample 1 is arranged on the test bench 3. Inside the test box 2, there are a test hood 4, a snow maker 5, a snow compaction wheel 6, and a hair dryer 7. A snow conveying hose 51 is provided at the snow output end of the snow maker 5, and a snow output nozzle 52 is provided at the snow output end of the snow conveying hose 51. A snow compaction unit is provided inside the test box 2, and the snow compaction wheel 6 is arranged at the output end of the snow compaction unit. The snow compaction wheel 6 is connected to the snow output nozzle 52. An air conveying hose 71 is provided at the air output end of the hair dryer 7, and an air output nozzle 72 is provided at the air output end of the air conveying hose 71. Thus, the asphalt road sample 1 on the test bench 3 is conveyed from the test port 21 to the test hood 4 inside the test box 2 through the conveying unit. Then, the snow maker 5 conveys the snow to the snow output nozzle 52 connected to the snow conveying hose 51. At the same time, the snow output nozzle 52 is driven by the snow compaction unit to evenly convey the snow onto the asphalt road sample 1. Next, the hair dryer 7 conveys the air to the air output nozzle 72 connected to the air conveying hose 71, thereby conducting a snow melting performance test on the asphalt road sample 1. At the same time, the snow compaction unit drives the snow compaction wheel 6 to compact the snow on the asphalt road sample 1, and then conducts a snow melting performance test on the compacted snow on the asphalt road sample 1.

[0029] As Figures 1 to 3 shown, the conveying unit includes a first electric slide rail 8 and a first electric push rod 81. The first electric slide rail 8 is symmetrically arranged at the test port 21, the first electric push rod 81 is arranged on the sliding end of the first electric slide rail 8, and the test bench 3 is arranged at the telescopic ends of the two first electric push rods 81. Thus, the asphalt road sample 1 on the test bench 3 is conveyed from the test port 21 to the test hood 4 inside the test box 2 through the cooperation of the first electric slide rail 8 and the first electric push rod 81.

[0030] As Figure 4 and Figure 5As shown, a test tank 31 is provided at the top of the test bench 3, and the asphalt road sample 1 is placed inside the test tank 31. A drain pipe 32 is provided at the bottom of the test bench 3, and the drain pipe 32 is communicated with the test tank 31. Thus, the asphalt road sample 1 is placed inside the test tank 31, and at the same time, the melted snow water on the asphalt road sample 1 is discharged through the drain pipe 32.

[0031] As Figure 2 and Figure 3 shown, a test hole 41 is provided inside the test cover 4. The bottom of the test hole 41 is communicated with the top of the test bench 3. Two electric cover doors 42 are symmetrically provided at the top of the test hole 41. Thus, the test cover 4 covers the asphalt road sample 1 on the test bench 3 to prevent external factors from affecting the test of the snow melting performance of the asphalt road sample 1.

[0032] It should be added that the heating device can be installed on the electric cover door 42, which is common knowledge and will not be elaborated here.

[0033] As Figures 2 to 5 shown, the snow pressing unit includes a second electric push rod 61, a second electric slide rail 62 and a third electric slide rail 63. The second electric slide rail 62 is provided at the telescopic end of the second electric push rod 61, and the third electric slide rail 63 is provided at the sliding end of the second electric slide rail 62. Thus, through the cooperation of the second electric push rod 61, the second electric slide rail 62 and the third electric slide rail 63, the snow feeding nozzle 52 is driven to evenly transport the snow onto the asphalt road sample 1. At the same time, through the cooperation of the second electric push rod 61, the second electric slide rail 62 and the third electric slide rail 63, the snow pressing wheel 6 is also driven to compact the snow on the asphalt road sample 1, and then the snow melting performance test is carried out on the compacted snow on the asphalt road sample 1.

[0034] As Figure 5 shown, the snow pressing unit further includes a pressure sensor 64. The pressure sensor 64 is provided at the sliding end of the third electric slide rail 63, and the snow pressing wheel 6 is provided at the sensing end of the pressure sensor 64. Thus, the force with which the snow pressing wheel 6 compacts the snow on the asphalt road sample 1 is controlled through the pressure sensor 64, and then the compaction degree of the snow on the asphalt road sample 1 is controlled.

[0035] As Figure 2 and Figure 3 shown, the test cover 4 is provided with an air inlet hole and an air outlet hole. An air inlet filter screen 43 is provided inside the air inlet hole, and an air outlet filter screen 44 is provided inside the air outlet hole. Thus, after the blower 7 transports the air to the air outlet nozzle 72 connected to the air delivery hose 71, the air outlet nozzle 72 transports the air from the air inlet filter screen 43 to the snow on the asphalt road sample 1 inside the test cover 4, and at the same time, the air inside the test cover 4 is discharged from the air outlet filter screen 44.

[0036] As Figure 2As shown in the figure, two third electric push rods 9 are symmetrically arranged on the hair dryer 7, and the air outlet nozzle 72 is arranged on the telescopic ends of the two third electric push rods 9. The air outlet nozzle 72 abuts against the air inlet filter screen 43, so as to control the height of the air outlet nozzle 72 through the third electric push rod 9, ensuring that when the snow on the asphalt road sample 1 melts and thins, the air output by the air outlet nozzle 72 is continuously delivered to the snow surface.

[0037] Working principle: First, place the asphalt road sample 1 in the test groove 31 at the top of the test bench 3, then drive the test bench 3 into the interior of the test chamber 2 from the test port 21 through the first electric slide rail 8, and then drive the test bench 3 to rise to the bottom of the test cover 4 through the first electric push rod 81. At this time, the bottom of the test hole 41 is communicated with the top of the test bench 3, and at the same time, the test cover 4 covers the asphalt road sample 1 on the test bench 3. Then, open the top of the test hole 41 through the electric cover door 42, and then drive the second electric slide rail 62 and the third electric slide rail 63 to descend into the test hole 41 through the second electric push rod 61. Then, drive the third electric slide rail 63 to drive the snow delivery nozzle 52 on the snow pressing wheel 6 to move horizontally through the second electric slide rail 62, and at the same time, drive the snow pressing wheel 6 to drive the snow delivery nozzle 52 to move vertically through the third electric slide rail 63, so that the snow making machine 5 can deliver the snow to the snow delivery nozzle 52 connected to the snow delivery hose 51, and at the same time, make the snow delivery nozzle 52 evenly deliver the snow to the asphalt road sample 1. Then, close the top of the test hole 41 through the electric cover door 42, and the snow melting performance test of the asphalt road sample 1 can be started.

[0038] Furthermore, since the snow on the asphalt road sample 1 will be affected by the wind during melting, when conducting the snow melting performance test on the asphalt road sample 1, the hair dryer 7 is used to deliver the wind to the air outlet nozzle 72 connected to the air delivery hose 71, so that the snow melting performance test of the asphalt road sample 1 can be carried out under the wind environment. At the same time, as the snow on the asphalt road sample 1 melts, the thickness of the snow on the asphalt road sample 1 will become thinner. Therefore, by controlling the height of the air outlet nozzle 72 through the third electric push rod 9, it can be ensured that the air output by the air outlet nozzle 72 is accurately delivered to the snow surface.

[0039] Still further, since the melting speed of the compacted snow will be affected after the snow on the asphalt road sample 1 is compacted by the car tire, when conducting the snow melting performance test on the asphalt road sample 1, the second electric push rod 61, the second electric slide rail 62, the third electric slide rail 63 and the pressure sensor 64 are used in cooperation to drive the snow pressing wheel 6 to compact the snow on the asphalt road sample 1, so as to conduct the snow melting performance test of the asphalt road sample 1 under the condition that the snow is compacted.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A snow melting performance test device for asphalt pavement, characterized in that: The invention comprises a test box (2) for testing the snow melting performance of an asphalt road sample (1). The test box (2) is provided with a test port (21). A conveying unit is provided at the test port (21). A test bench (3) is provided at the conveying end of the conveying unit. The asphalt road sample (1) is arranged on the test bench (3). A test cover (4), a snowmaking machine (5), a snow pressing wheel (6) and a blower (7) are provided inside the test box (2). A snow conveying hose (51) is provided at the snow conveying end of the snowmaking machine (5). A snow conveying nozzle (52) is provided at the snow conveying end of the snow conveying hose (51). A snow pressing unit is provided inside the test box (2). The snow pressing wheel (6) is provided at the output end of the snow pressing unit. The snow pressing wheel (6) is connected to the snow conveying nozzle (52). An air conveying hose (71) is provided at the air conveying end of the blower (7). An air conveying nozzle (72) is provided at the air conveying end of the air conveying hose (71).

2. The asphalt pavement material snow melting performance test device according to claim 1, characterized in that: The conveying unit comprises a first electric slide rail (8) and a first electric push rod (81); the first electric slide rail (8) is symmetrically arranged at the test port (21); the first electric push rod (81) is arranged on the sliding end of the first electric slide rail (8); and the test bench (3) is arranged on the telescopic ends of the two first electric push rods (81).

3. The asphalt pavement material snow melting performance test device according to claim 1, characterized in that: A test trough (31) is provided on the top of the test bench (3), the asphalt road sample (1) is arranged inside the test trough (31), and a drainage pipe (32) is provided on the bottom of the test bench (3), the drainage pipe (32) being connected to the test trough (31).

4. The asphalt pavement material snow melting performance testing device as claimed in claim 3, characterized in that: A test hole (41) is provided inside the test cover (4), the bottom of the test hole (41) is connected to the top of the test bench (3), and two electric cover doors (42) are symmetrically provided on the top of the test hole (41).

5. The asphalt pavement material snow melting performance testing device as claimed in claim 1, characterized in that: The snow pressing unit comprises a second electric push rod (61), a second electric slide rail (62) and a third electric slide rail (63), wherein the second electric slide rail (62) is arranged on the telescopic end of the second electric push rod (61), and the third electric slide rail (63) is arranged on the sliding end of the second electric slide rail (62).

6. The asphalt pavement material snow melting performance testing device as claimed in claim 5, characterized in that: The snow compacting unit further comprises a pressure sensor (64), wherein the pressure sensor (64) is arranged on the sliding end of the third electric slide rail (63), and the snow compacting wheel (6) is arranged on the sensing end of the pressure sensor (64).

7. The asphalt pavement material snow melting performance testing device according to claim 1, characterized in that: The test cover (4) is provided with an air inlet hole and an air outlet hole, an air inlet filter (43) is provided inside the air inlet hole, and an air outlet filter (44) is provided inside the air outlet hole.

8. The snow melting performance testing device for asphalt pavement material according to claim 7, characterized in that: The hair dryer (7) is symmetrically provided with two third electric push rods (9), the air delivery nozzle (72) is provided on the telescopic ends of the two third electric push rods (9), and the air delivery nozzle (72) is in conflict with the air inlet filter (43).

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