A device for testing the resistance of a road surface material to scouring

Abstract

This utility model relates to a test device for erosion resistance of highway pavement materials, belonging to the field of materials testing technology. The test device includes a test platform and a water tank mounted on top of it, with a drainage channel on one side of the water tank. It also includes an adjustment mechanism located outside the water tank, used to flexibly adjust the spray range and angle of the water source, thereby obtaining diverse test data. The adjustment mechanism includes a baffle and two adjusting plates. The adjusting plates are mounted inside the baffle via a hinge shaft. The baffle can move laterally, and the adjusting plates can move axially along the hinge shaft seat. By changing the spray range and angle, and comparing erosion at different angles, diverse test data can be obtained, improving the accuracy of highway material performance analysis.

Description

Technical Field

[0001] This utility model relates to the field of materials testing technology, and in particular to a test device for the erosion resistance of highway pavement materials. Background Technology

[0002] Extensive engineering practice has shown that many road surface damages are not due to insufficient load-bearing capacity, but rather to other causes. Among these, the insufficient erosion resistance of road pavement materials is one of the important factors that accelerate road pavement damage. Domestic and international surveys and studies show that the failure of road pavement materials to meet erosion resistance requirements leads to pavement mud and cracking. Therefore, erosion resistance testing of road pavement materials plays a very important role and has great significance in effectively extending the service life of roads.

[0003] A search revealed that the Chinese patent "A Test Device for Erosion Resistance of Highway Pavement Material" (CN216525291U) includes an operating platform. A placement groove is located on one side of the top of the operating platform, and a through groove is located on the platform and outside the placement groove. A baffle plate is installed inside the through groove, and the baffle plate is vertically connected to the operating platform. By setting a fixed clamping plate, a first cylinder, and a movable clamping plate, the position of the highway pavement material undergoing the erosion test can be fixed, preventing displacement of the road pavement material under the erosion of the sprayed water flow, thus affecting the test results and improving the accuracy of the erosion test results. However, in actual use, the above method has the following drawbacks: the spray range and angle of the spray plate are fixed, resulting in a single type of test data obtained during the erosion test of the highway material, leading to insufficient accuracy in the performance analysis of the highway material. Utility Model Content

[0004] Therefore, it is necessary to provide a test device for the erosion resistance of highway pavement materials to address the problem of fixed water spray range and angle and limited test data.

[0005] A test device for erosion resistance of highway pavement materials includes a test platform and a water box installed on top of it, with a drainage groove on one side of the water box; it also includes an adjustment mechanism, which is located outside the water box and is used to flexibly adjust the spray range and angle of the water source to obtain diverse test data; wherein, the adjustment mechanism includes a baffle and two adjustment plates, the adjustment plates are installed inside the baffle via a hinge shaft, the baffle can move laterally, and the adjustment plates can move axially along the hinge shaft seat.

[0006] In one embodiment, a support box is provided on the outer side of the baffle, and two drive rods for driving the baffle are provided on the support box.

[0007] In one embodiment, the test bench has a test pool, and a support is installed inside the test pool. The side view of the support is trapezoidal.

[0008] In one embodiment, a water tank is installed at the bottom of the test bench, and a water pump is installed at the top of the test bench. The output end and input end of the water pump are respectively connected to the water box and the water tank through two pipes. A bend pipe is provided between the water tank and the test pool.

[0009] In one embodiment, a first electric push rod is installed on one side of the water box, and one end of the first electric push rod is connected to a baffle.

[0010] In one embodiment, a sleeve is slidably fitted on the outer side of the drive rod, one end of the sleeve passes through and is fixedly connected to the inside of the support box, a branch pipe is provided at one end of the sleeve, and a solenoid valve is provided on the outer side of the branch pipe.

[0011] In one embodiment, the support box is provided with a second electric push rod extending into it, and one end of the second electric push rod is fitted with a piston plate that is slidably connected to the inside of the support box.

[0012] In one embodiment, a hook spring is provided between the adjusting plate and the support box.

[0013] Beneficial effects 1. By setting baffles and adjusting plates, the drainage channel can be blocked, thereby adjusting the drainage range and changing the water source spray pressure. Combined with adjusting plates to adjust the water source spray angle, diverse test data can be obtained, improving the accuracy of highway material performance analysis. 2. By setting up two adjustment plates and using corresponding drive rods to drive each adjustment plate individually, the two adjustment plates can form different water spray angles during drainage, allowing for rinsing comparison and enriching the experimental data. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the test bench and water tank of this utility model; Figure 3 This is a cross-sectional schematic diagram of the water box and drainage channel of this utility model; Figure 4 This is a cross-sectional schematic diagram of the support box and baffle of this utility model; Figure 5 This is a cross-sectional schematic diagram of the sleeve of this utility model.

[0016] Figure label: 100. Test bench; 110. Water pump; 200. Water box; 210. First electric push rod; 300. Adjustment mechanism; 310. Baffle; 311. Support box; 312. Drive rod; 313. Sleeve; 314. Second electric push rod; 315. Piston plate; 316. Hook spring; 320. Adjustment plate. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] The following is combined Figures 1-5 This invention describes a test device for erosion resistance of highway pavement materials.

[0019] In one embodiment, a road pavement material erosion resistance testing device includes a test bench 100 and a water box 200 installed on top of it, with a drainage groove on one side of the water box 200; it also includes an adjustment mechanism 300, which is located outside the water box 200 and is used to flexibly adjust the spray range and angle of the water source to obtain diverse test data; wherein, the adjustment mechanism 300 includes a baffle 310 and two adjustment plates 320, the adjustment plates 320 are installed inside the baffle 310 through a hinge shaft, the baffle 310 can move laterally, and the adjustment plates 320 can move axially along the hinge shaft seat.

[0020] like Figure 4 As shown, a support box 311 is provided on the outer side of the baffle 310, and two drive rods 312 for driving the baffle 310 are provided on the support box 311.

[0021] In this embodiment, during the flushing test, the user can drive the baffle 310 to block the drainage channel and change the drainage range. At the same time, the two drive rods 312 can move synchronously to make the two adjusting plates 320 move synchronously, changing the water spray angle and obtaining diverse data. Furthermore, the two drive rods 312 can move to different degrees, allowing the two adjusting plates 320 to guide the sprayed water source at two different angles, facilitating comparison.

[0022] It should be noted that a waterproof membrane is provided between the baffle 310 and the two adjusting plates 320 to reduce leakage along the hinge during water discharge. The waterproof membrane is made of rubber, which is flexible and not easily damaged after repeated adjustment of the adjusting plates 320. The location and dimensions of the water box 200 can be selected according to the specifications of the highway materials and the actual test requirements.

[0023] like Figure 1 As shown, a test pool is provided on the test bench 100, and a support is installed inside the test pool. The side view of the support is trapezoidal.

[0024] The road material is supported by a bracket with a trapezoidal side view, which can quickly discharge water to the outside after water scouring, reducing the occurrence of inaccurate scouring data caused by water soaking the road material.

[0025] like Figure 1 and Figure 2 As shown, a water tank is installed at the bottom of the test bench 100, and a water pump 110 is installed at the top of the test bench 100. The output end and input end of the water pump 110 are connected to the water box 200 and the water tank respectively through two pipes. A bend pipe is installed between the water tank and the test pool.

[0026] Starting the water pump 110 will direct the water from the water tank into the water box 200 for flushing. The used water can be returned to the water tank through the bend pipe for recycling, which is more energy-efficient.

[0027] like Figure 3 As shown, a first electric push rod 210 is installed on one side of the water box 200, and one end of the first electric push rod 210 is connected to the baffle 310.

[0028] Activating the first electric push rod 210 can drive the baffle 310 to move, thereby blocking the drainage channel and changing the drainage position; It should be noted that when the power of the water pump 110 is constant, changing the drainage range will cause the water source jet pressure to change, resulting in flushing data under different pressures.

[0029] like Figure 4 and Figure 5 As shown, a sleeve 313 is slidably sleeved on the outer side of the drive rod 312. One end of the sleeve 313 passes through and is fixedly connected to the inside of the support box 311. A branch pipe is provided at one end of the sleeve 313, and a solenoid valve is provided on the outer side of the branch pipe.

[0030] It should be noted that one end of the drive rod 312 is provided with a sealing ring that is in close contact with the inner wall of the sleeve 313 to ensure the airtightness of the sleeve 313 and make the movement of the drive rod 312 more stable.

[0031] The branch pipe receives gas, and the opening and closing of the solenoid valve controls the branch pipe. After a certain amount of gas enters the sleeve 313, the gas can drive the drive rod 312 to move, thereby driving the corresponding adjustment plate 320.

[0032] like Figure 4 As shown, a second electric push rod 314 extending into the support box 311 is provided on the support box 311, and a piston plate 315 slidably connected to the inside of the support box 311 is installed at one end of the second electric push rod 314.

[0033] The second electric push rod 314 is used to drive the gas in the piston plate 315 and the support box 311 into the corresponding branch pipe.

[0034] like Figure 4 As shown, a hook spring 316 is provided between the adjusting plate 320 and the support box 311.

[0035] When the test ends or when the adjustment plate 320 needs to be reset, the drive rod 312 can be reset, and then the hook spring 316 is used to pull the adjustment plate 320 to reset.

[0036] Working principle: The road material is installed on the bracket, and then the water pump 110 is started, so that the water in the water tank is sprayed out along the drainage channel on the water box 200 to carry out the flushing test. During this process, the user can drive the baffle 310 and the adjusting plate 320 to adjust the water spray range and angle, obtain various data and record them. The sprayed water is guided back to the water tank through the folding pipe for recycling. After the test is completed, the water pump 110 can be stopped and the road material can be removed.

[0037] It should be noted that the first electric actuator 210, the second electric actuator 314, the water pump 110, and the solenoid valve mentioned above are all devices with relatively mature existing technology. The specific models can be selected according to actual needs. At the same time, the first electric actuator 210, the second electric actuator 314, the water pump 110, and the solenoid valve can be powered by the built-in power supply or by the mains power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0038] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for testing the resistance of a highway pavement material to washout, characterized by include: The test bench (100) and the water box (200) installed on its top, the water box (200) having a drainage groove on one side; It also includes an adjustment mechanism (300), which is located on the outside of the water box (200) and is used to flexibly adjust the spray range and angle of the water source, thereby obtaining diverse test data; The adjustment mechanism (300) includes a baffle (310) and two adjustment plates (320). The adjustment plates (320) are installed inside the baffle (310) via a hinge shaft. The baffle (310) can move laterally, and the adjustment plates (320) can move axially along the hinge shaft seat.

2. The device for testing the resistance of a highway pavement material to washout according to claim 1, wherein A support box (311) is provided on the outside of the baffle (310), and two drive rods (312) for driving the baffle (310) are provided on the support box (311).

3. The erosion resistance testing device for highway pavement materials according to claim 1, characterized in that, The test bench (100) has a test pool, and a support is installed inside the test pool. The side view of the support is trapezoidal.

4. The device for testing the resistance of a road paving material to washout according to claim 3, characterized in that, A water tank is installed at the bottom of the test bench (100), and a water pump (110) is installed at the top of the test bench (100). The output end and input end of the water pump (110) are connected to the water box (200) and the water tank respectively through two pipes. A bend pipe is installed between the water tank and the test pool.

5. The device for testing the resistance of a highway pavement material to washout according to claim 1, wherein A first electric push rod (210) is installed on one side of the water box (200), and one end of the first electric push rod (210) is connected to the baffle (310).

6. The erosion resistance testing device for highway pavement materials according to claim 2, characterized in that, A sleeve (313) is slidably sleeved on the outside of the drive rod (312). One end of the sleeve (313) passes through and is fixedly connected to the inside of the support box (311). A branch pipe is provided at one end of the sleeve (313), and a solenoid valve is provided on the outside of the branch pipe.

7. The device for testing the resistance of a highway pavement material to washout according to claim 2, wherein The support box (311) is provided with a second electric push rod (314) extending into it, and one end of the second electric push rod (314) is fitted with a piston plate (315) that is slidably connected to the inside of the support box (311).

8. The device for testing the resistance of a highway pavement material to washout according to claim 2, wherein A hook spring (316) is provided between the adjusting plate (320) and the support box (311).

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