Asphalt mixture anti-scouring test device

Abstract

The utility model discloses an asphalt mixture anti-scouring test device which comprises a test box, a test piece box, a nozzle and a liquid supply mechanism connected with the nozzle, the test piece box is rotatably arranged in the test box, the nozzle is arranged on the test box in a lifting mode and located above the test piece box, and the liquid supply mechanism is connected with the nozzle. An angle adjusting mechanism for rotationally adjusting the angle of the test piece box relative to the horizontal plane and a lifting adjusting mechanism for lifting the nozzle are arranged on the test piece box. The asphalt mixture anti-scouring test device has the advantages of being simple in structure, capable of adjusting the relative height and angle of the nozzle and the test piece, high in adaptability and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of feeding equipment, in particular to an anti-scour testing device for asphalt mixture. Background Art

[0002] The number and length of urban traffic roads are increasing with the development of urban economy and expected planning, which has brought a lot of convenience to people's lives. At the same time, the development of cities has also made the problem of urban environmental pollution more and more serious. In addition to automobile exhaust, garbage pollution and dust, dust, gravel, etc. generated by urban construction will accumulate on the surface of urban roads. Not only will it cause damage to the road environment, but it will also pose many hidden dangers to vehicle driving safety. Therefore, effective cleaning of the road surface is a necessary measure for road maintenance and prevention of environmental pollution.

[0003] As the permeable asphalt pavement ages, its internal void structure will be gradually blocked by dust and garbage, losing its permeability, which in turn affects its drainage, noise reduction and other performances. In order to clean the permeable asphalt pavement and maintain or restore the drainage skills of the pavement, it is necessary to clean the pavement at a certain time. The most effective way is to use a high-pressure cleaner, in which the water pressure sprayed by the water gun nozzle of the cleaning vehicle is very high, mostly 5-10MPa. However, the permeable asphalt pavement with a porous structure has an upper limit of water pressure resistance. If the water pressure sprayed by the water gun nozzle is too large and exceeds the upper limit of water pressure resistance, it is easy to cause the peeling between the asphalt and the aggregate, resulting in the loosening of the mixture and the destruction of the pavement structure; however, the upper limit of water pressure resistance of the permeable asphalt pavement is affected by the height and angle of the water gun nozzle. Therefore, before studying the cleaning vehicle for the permeable asphalt pavement, it is necessary to obtain the optimal height of the water gun nozzle from the pavement, the optimal angle relative to the pavement, and the upper limit of the water pressure strength through experiments.

[0004] The existing application number is 202120275285.5, which is a test device for simulating dynamic water scouring behavior of asphalt mixture, including a rainfall simulation box and a water supply device; the top of the rainfall simulation box is open, and a sample placement plate and a heating device are arranged inside the rainfall simulation box, the sample placement plate is spaced apart from the bottom of the rainfall simulation box, and the heating device is arranged between the sample placement plate and the bottom of the rainfall simulation box; the water supply device includes a water pipe, a water pump and a nozzle, the water pump is connected to the water pipe, one end of the water pipe is connected to the bottom of the rainfall simulation box, and the other end of the water pipe is connected to the nozzle, the nozzle is located directly above the rainfall simulation box, and the nozzle is arranged downward. The test device has the following shortcomings:

[0005] 1) The nozzle is fixed relative to the rainfall simulation box, and the relative height and angle between the nozzle and the rainfall simulation box cannot be adjusted. It is impossible to obtain the optimal height of the nozzle from the road surface and the optimal angle relative to the road surface through the test;

[0006] 2) It is difficult to meet the placement requirements of specimens at different inclination angles and has poor adaptability. Utility Model Content

[0007] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an asphalt mixture anti-scour test device which has a simple structure, can adjust the relative height and angle between the nozzle and the test piece and has strong adaptability.

[0008] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0009] An asphalt mixture anti-scour testing device comprises a test box, a specimen box, a nozzle and a liquid supply mechanism connected to the nozzle, wherein the specimen box is rotatably arranged in the test box, the nozzle is lifted and arranged on the test box and is located above the specimen box, and the specimen box is provided with an angle adjustment mechanism for rotating and adjusting the angle of the specimen box relative to a horizontal plane and a lifting and adjusting mechanism for lifting and adjusting the nozzle.

[0010] As a further improvement of the above technical solution:

[0011] The angle adjustment mechanism comprises two groups of lateral displacement adjustment components capable of adjusting positions by lateral displacement. The two groups of lateral displacement adjustment components are respectively arranged on opposite sides of the test box and respectively abut against opposite sides of the specimen box.

[0012] The lateral displacement adjustment component comprises an adjustment screw movably arranged on the side wall of the test box, the adjustment screw is provided with adjustment nuts on both the inner and outer sides of the test box, and the adjustment screw is against the specimen box.

[0013] The test box is provided with supporting blocks on both sides of the test piece box so as to be laterally movable, and the adjusting screw rod is movably arranged in the corresponding supporting blocks.

[0014] The test box comprises an enclosed side wall and a bottom wall. The enclosed side wall is rotatably arranged in the test box. The bottom wall is detachably arranged at the bottom of the enclosed side wall. The bottom wall is a solid wall or a wall with holes.

[0015] The test box comprises a box body and a box cover. The test box is rotatably arranged in the box body. The box cover is detachably covered on the top of the box body. A guide hole is arranged on the box cover. The nozzle is inserted into the guide hole.

[0016] The lifting and lowering adjustment mechanism comprises a mounting frame and a clamping member, wherein the mounting frame is arranged on the test box, and the clamping member is arranged on the mounting frame and clamped on the nozzle.

[0017] The mounting frame comprises a support frame and a cross bar, the clamping member is a clamping hoop, the support frame is fixed on the test box, one end of the cross bar is mounted on the support frame, and the clamping hoop is arranged at the other end of the cross bar.

[0018] The liquid supply mechanism comprises a liquid collecting box, a water pump, a water inlet pipe and a water outlet pipe. The water inlet pipe is connected between the liquid collecting box and the water inlet end of the water pump, and the water outlet pipe is connected between the nozzle and the water outlet end of the water pump.

[0019] The bottom of the test box is provided with a drainage hole, and the liquid collecting box is arranged below the drainage hole.

[0020] Compared with the prior art, the advantages of the utility model are:

[0021] The utility model of the asphalt mixture anti-scour test device has the following test process: placing a test piece made of asphalt mixture in a test piece box; rotating the test piece box by an angle adjustment mechanism to adjust the angle of the test piece box relative to the horizontal plane; adjusting the height of the nozzle relative to the test piece by a lifting adjustment mechanism; adjusting the water pressure sprayed by the nozzle by a liquid supply mechanism or a nozzle; and conducting combined tests at different angles, heights, and water pressures to obtain the optimal height of the nozzle from the test piece, the optimal angle relative to the test piece, and the optimal spraying water pressure, thereby obtaining the optimal height of the nozzle from the road surface, the optimal angle relative to the road surface, and the optimal spraying water pressure. The asphalt mixture anti-scour test device, on the one hand, can adjust the relative height and angle of the nozzle and the test piece box, and can obtain the optimal height of the nozzle from the road surface and the optimal angle relative to the road surface through tests; on the other hand, the test piece is placed in the test piece box, and the inclination angle is adjusted along with the test piece box, so as to meet the placement requirements of the test piece at different inclination angles, and has strong adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the asphalt mixture anti-scour testing device of the utility model.

[0023] Figure 2 This is a schematic diagram of the main cross-sectional structure of the test box of the asphalt mixture anti-scour testing device of the utility model.

[0024] Figure 3 The utility model is a schematic diagram of the top view of the test box of the asphalt mixture anti-scour test device.

[0025] Figure 4 The utility model is a schematic diagram of the structure of the bottom wall of the asphalt mixture anti-scour testing device.

[0026] Figure 5 Another structural schematic diagram of the bottom wall of the asphalt mixture anti-scour testing device of the utility model.

[0027] The symbols in the figure represent:

[0028] 1. Test box; 11. Box body; 12. Box cover; 13. Guide hole; 2. Test piece box; 21. Enclosed side wall; 22. Bottom wall; 3. Nozzle; 4. Liquid supply mechanism; 41. Liquid collecting box; 42. Water pump; 43. Water inlet pipe; 44. Water outlet pipe; 5. Angle adjustment mechanism; 51. Lateral displacement adjustment component; 511. Adjusting screw; 512. Adjusting nut; 52. Support block; 6. Lifting and lowering adjustment mechanism; 61. Mounting frame; 611. Support frame; 612. Cross bar; 62. Clamping piece; 7. Drain hole. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, 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 cannot be understood as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "assemble", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Figures 1 to 5An embodiment of the asphalt mixture anti-scour test device of the utility model is shown. The asphalt mixture anti-scour test device of this embodiment includes a test box 1, a test piece box 2, a nozzle 3 and a liquid supply mechanism 4 connected to the nozzle 3. The test piece box 2 is rotatably set in the test box 1, the nozzle 3 is lifted and set on the test box 1 and is located above the test piece box 2. The test piece box 2 is provided with an angle adjustment mechanism 5 for rotating and adjusting the angle of the test piece box 2 relative to the horizontal plane and a lifting and adjusting mechanism 6 for lifting and adjusting the nozzle 3.

[0034] Test process: Place the test piece made of asphalt mixture in the test piece box 2; rotate the test piece box 2 by the angle adjustment mechanism 5 to adjust the angle of the test piece box 2 relative to the horizontal plane; adjust the height of the nozzle 3 relative to the test piece by the lifting adjustment mechanism 6; adjust the water pressure sprayed by the nozzle 3 by the liquid supply mechanism 4 or the nozzle 3; and conduct tests with different angles, heights and water pressures to obtain the best height of the nozzle 3 from the test piece, the best angle relative to the test piece and the best spraying water pressure, thereby obtaining the best height of the nozzle 3 from the road surface, the best angle relative to the road surface and the best spraying water pressure. The asphalt mixture anti-scour test device, on the one hand, can adjust the relative height and angle of the nozzle 3 and the test piece box 2, and can obtain the best height of the nozzle 3 from the road surface and the best angle relative to the road surface through the test; on the other hand, the test piece is placed in the test piece box 2, and the inclination angle is adjusted with the test piece box 2, which can meet the placement requirements of the test piece at different inclination angles, and has strong adaptability.

[0035] Furthermore, in this embodiment, the angle adjustment mechanism 5 includes two sets of lateral displacement adjustment components 51 capable of lateral displacement adjustment, and the two sets of lateral displacement adjustment components 51 are respectively arranged on opposite sides of the test box 1 and respectively abut against opposite sides of the specimen box 2. The lateral displacement is Figure 1 The longitudinal direction of the test box 1 is shown in FIG. The lateral displacement adjustment component 51 on one side of the test box 2 moves toward the test box 2, and at the same time, the lateral displacement adjustment component 51 on the other side of the test box 2 moves away from the test box 2, that is, the angle of the test box 2 relative to the horizontal plane is adjusted. The structure is simple and the adjustment is convenient.

[0036] Furthermore, in this embodiment, if Figure 1 and Figure 2 As shown, the lateral displacement adjustment assembly 51 includes an adjustment screw 511 movably arranged on the side wall of the test box 1, and the adjustment screw 511 is provided with adjustment nuts 512 on both the inner and outer sides of the test box 1, and the adjustment screw 511 is against the test box 2. By screwing the adjustment nuts 512 on both the inner and outer sides of the test box 1, the adjustment screw 511 can be moved toward and away from the test box 2, and the structure is simple and the operation is convenient.

[0037] Furthermore, in this embodiment, the test box 1 is provided with supporting blocks 52 on both sides of the specimen box 2 so as to be laterally movable, and the adjusting screw 511 is movably arranged in the corresponding supporting blocks 52. Since the adjusting screw 511 is a long bar, it is suspended into the test box 1 when supporting the specimen box 2, so that the stability of the adjusting screw 511 can be improved under the support of the supporting block 52. Preferably, the supporting block 52 is provided with a transverse through hole, and the adjusting screw 511 is arranged in the transverse through hole.

[0038] Further, in this embodiment, the test box 2 includes an enclosed side wall 21 and a bottom wall 22. The enclosed side wall 21 is rotatably arranged in the test box 2, and the bottom wall 22 is detachably arranged at the bottom of the enclosed side wall 21. The bottom wall 22 is a solid wall or a wall with holes. The bottom wall 22 is detachably arranged at the bottom of the enclosed side wall 21. The bottom wall 22 is as follows: Figure 4 The solid wall shown or Figure 5 The perforated wall shown can realize two types of scour tests: one with the bottom wall 22 draining and the other with the bottom wall 22 not draining, based on the variable factor of whether the bottom wall 22 drains water.

[0039] Further, in this embodiment, the test box 1 includes a box body 11 and a box cover 12, the test box 2 is rotatably arranged in the box body 11, the box cover 12 is detachably arranged on the top of the box body 11, and a guide hole 13 is provided on the box cover 12, and the nozzle 3 is inserted into the guide hole 13. The top cover of the box body 11 is provided with a box cover 12 to prevent liquid from splashing. The box cover 12 is provided with a guide hole 13 to guide the lifting and lowering movement of the nozzle 3. Preferably, the guide hole 13 is arranged vertically.

[0040] Furthermore, in this embodiment, if Figure 2 As shown, the lifting and lowering adjustment mechanism 6 includes a mounting frame 61 and a clamping member 62. The mounting frame 61 is arranged on the test box 1, and the clamping member 62 is arranged on the mounting frame 61 and clamped on the nozzle 3. By adjusting the position where the clamping member 62 is clamped on the nozzle 3, the height of the nozzle 3 relative to the test box 2 is adjusted. The structure is simple and the adjustment is convenient. Specifically, the mounting frame 61 is arranged on the top surface of the box cover 12.

[0041] Furthermore, in this embodiment, the mounting frame 61 includes a support frame 611 and a cross bar 612, the clamping member 62 is a clamping hoop, the support frame 611 is fixed on the test box 1, one end of the cross bar 612 is mounted on the support frame 611, and the clamping hoop is arranged at the other end of the cross bar 612. The clamping hoop is aligned with the guide hole 13 up and down, and the central axis of the clamping hoop is arranged vertically. Preferably, the support frame 611 and the cross bar 612 are connected by bolts, which is convenient for disassembly and assembly.

[0042] Furthermore, in this embodiment, the liquid supply mechanism 4 includes a liquid collecting tank 41, a water pump 42, a water inlet pipe 43 and a water outlet pipe 44, the water inlet pipe 43 is connected between the liquid collecting tank 41 and the water inlet end of the water pump 42, and the water outlet pipe 44 is connected between the nozzle 3 and the water outlet end of the water pump 42. The accumulated liquid in the liquid collecting tank 41 is pumped out by the water pump 42 and the water inlet pipe 43, and is transported to the nozzle 3 through the water outlet pipe 44, and is sprayed onto the asphalt mixture (porous) specimen in the specimen box 2 by the nozzle 3.

[0043] Furthermore, in this embodiment, a drainage hole 7 is provided at the bottom of the test box 1, and a liquid collecting box 41 is provided below the drainage hole 7. The accumulated liquid in the liquid collecting box 41 is pumped out by a water pump 42 and a water inlet pipe 43, and is transported to the nozzle 3 through a water outlet pipe 44, and is sprayed onto the asphalt mixture (porous) specimen in the specimen box 2 by the nozzle 3; after the high-pressure liquid flow is sprayed onto the specimen, it flows back into the liquid collecting box 41 through the drainage hole 7, realizing liquid recycling.

[0044] Furthermore, in this embodiment, a drainage mechanism is provided at the bottom of the box body 11 to facilitate cleaning.

[0045] Preferably, the water pump 42 can be selected to have a pressure regulating valve and a visible pressure, or the water pump 42 can be additionally installed with a pressure regulating valve and a visible hydraulic gauge. The pressure regulating valve is used to control the pressure of the spray water flow, and the visible hydraulic gauge feeds back the current water pressure.

[0046] The utility model of the asphalt mixture anti-scouring test device can realize the recycling of water and meet the test requirements of different scouring times; the output conventional water pressure can reach 0-18MPa through the pressure regulating valve, and the limit water pressure can reach 25MPa, and the nozzle 3 (high-pressure water gun) can be regulated to spray water pressure to carry out scouring tests with different scouring water pressures and scouring times; at the same time, the angle of the test piece box 2 can be freely adjusted through the angle adjustment mechanism 5, which is used to adjust the scouring angle of the high-pressure water flow on the test piece to realize scouring tests with different scouring angles.

[0047] The asphalt mixture anti-scour test device of the utility model is not limited to the scour test on the asphalt mixture specimen, but can also be used for scour test on other similar specimens. That is to say, the asphalt mixture in the name does not limit the use of the device for testing other specimens.

[0048] In other embodiments, a test piece may be used in place of the bottom wall 22 .

[0049] Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the art can use the above disclosed technical content to make many possible changes and modifications to the technical solution of the present invention without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. An asphalt mixture anti-scour test device, characterized in that: The invention comprises a test box (1), a test box (2), a nozzle (3), and a liquid supply mechanism (4) connected to the nozzle (3); the test box (2) is rotatably arranged in the test box (1); the nozzle (3) is lifted and arranged on the test box (1) and is located above the test box (2); and the test box (2) is provided with an angle adjustment mechanism (5) for rotatably adjusting the angle of the test box (2) relative to a horizontal plane and a lifting adjustment mechanism (6) for lifting and adjusting the nozzle (3).

2. The asphalt mixture anti-scour testing device according to claim 1, characterized in that: The angle adjustment mechanism (5) comprises two groups of lateral displacement adjustment components (51) capable of adjusting positions by lateral displacement. The two groups of lateral displacement adjustment components (51) are respectively arranged on opposite sides of the test box (1) and respectively abut against opposite sides of the specimen box (2).

3. The asphalt mixture anti-scour testing device according to claim 2, characterized in that: The lateral displacement adjustment component (51) comprises an adjustment screw (511) movably arranged on a side wall of the test box (1); the adjustment screw (511) is provided with adjustment nuts (512) on both the inner and outer sides of the test box (1); and the adjustment screw (511) abuts against the specimen box (2).

4. The asphalt mixture anti-scour testing device according to claim 3 is characterized in that: The test box (1) is provided with supporting blocks (52) on both sides of the specimen box (2) so as to be laterally movable, and the adjusting screw rod (511) is movably inserted into the corresponding supporting block (52).

5. The asphalt mixture anti-scour testing device according to any one of claims 1 to 4, characterized in that: The test piece box (2) comprises an enclosing side wall (21) and a bottom wall (22); the enclosing side wall (21) is rotatably arranged in the test piece box (2); the bottom wall (22) is detachably arranged at the bottom of the enclosing side wall (21); and the bottom wall (22) is a solid wall or a wall with holes.

6. The asphalt mixture anti-scour test device according to any one of claims 1 to 4, characterized in that: The test box (1) comprises a box body (11) and a box cover (12); the test piece box (2) is rotatably arranged in the box body (11); the box cover (12) is detachably arranged on the top of the box body (11); a guide hole (13) is provided on the box cover (12); and the nozzle (3) is inserted into the guide hole (13).

7. The asphalt mixture anti-scour testing device according to any one of claims 1 to 4, characterized in that: The lifting and lowering adjustment mechanism (6) comprises a mounting frame (61) and a clamping member (62); the mounting frame (61) is arranged on the test box (1); and the clamping member (62) is arranged on the mounting frame (61) and clamped on the nozzle (3).

8. The asphalt mixture anti-scour testing device according to claim 7, characterized in that: The mounting frame (61) comprises a support frame (611) and a cross bar (612); the clamping member (62) is a clamping hoop; the support frame (611) is fixed on the test box (1); one end of the cross bar (612) is mounted on the support frame (611); and the clamping hoop is arranged at the other end of the cross bar (612).

9. The asphalt mixture anti-scour test device according to any one of claims 1 to 4, characterized in that: The liquid supply mechanism (4) comprises a liquid collecting box (41), a water pump (42), a water inlet pipe (43) and a water outlet pipe (44); the water inlet pipe (43) is connected between the liquid collecting box (41) and the water inlet end of the water pump (42); and the water outlet pipe (44) is connected between the nozzle (3) and the water outlet end of the water pump (42).

10. The asphalt mixture anti-scour testing device according to claim 9, characterized in that: The bottom of the test box (1) is provided with a drainage hole (7), and the liquid collecting box (41) is arranged below the drainage hole (7).

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