An asphalt concrete pressure water stability test device

Abstract

The present invention discloses an asphalt concrete pressure water stability test device, belonging to the technical field of asphalt concrete performance test devices. An asphalt concrete pressure water stability test device includes a treatment tank. The upper and lower parts of the side wall of the treatment tank are respectively connected with a water inlet pipe and a drain pipe. A top plate is installed on the treatment tank. A plurality of hinged first movable covers are circumferentially distributed on the top of the top plate. An activity component is arranged between the top plate and the bottom of the treatment tank. A plurality of placement components for placing asphalt concrete specimens are circumferentially connected to the activity component. A flipping component for driving the placement component to rotate is arranged on the activity component. A water circulation component is arranged on the treatment tank. An electric heater is arranged at the bottom of the treatment tank. A temperature sensor is arranged on the inner wall of the treatment tank. A controller electrically connected to the electrical equipment in the device is arranged on the top plate, having the advantages of water temperature regulation, stable placement, flexible flipping, full and comprehensive contact, high evaluation accuracy, reliable structure, and simplicity and practicality.

Description

Technical Field

[0001] The present invention relates to the technical field of asphalt concrete performance test devices, and specifically relates to an asphalt concrete pressure water stability test device. Background Technique

[0002] Asphalt concrete is composed of three parts: graded aggregate (aggregate), stone powder (filler), and asphalt (binder). As the core material in road construction, the performance of asphalt concrete directly affects the service life and driving safety of the road. In order to ensure that asphalt concrete meets the requirements of road engineering, it is necessary to evaluate its water stability performance.

[0003] When processing the experimental group of asphalt concrete specimens, most of the time, the asphalt concrete specimens are directly placed at the bottom of the soaking tank, soaked in constant-temperature water at 60 °C for 48 hours, then taken out and dried, and then the stability is measured. However, the results obtained by this test method are not accurate. Since the asphalt concrete specimens are placed at the bottom of the soaking tank, the bottom surface of the asphalt concrete specimens cannot effectively contact with water, and they rely on gravity or capillary action to absorb water, with insufficient contact area, resulting in a significant reduction in the saturation efficiency, so that the asphalt concrete specimens cannot be in an effective saturated water state within 48 hours, and the soaking time needs to be extended to ensure the saturation effect. However, extending the soaking time reduces the test efficiency and cannot perform a rapid and efficient water stability performance test on the asphalt concrete specimens.

[0004] Therefore, it is necessary to provide an asphalt concrete pressure water stability test device to solve the above problems. Summary of the Invention

[0005] Aiming at the deficiencies of the existing technology, the purpose of the embodiment of the present invention is to provide an asphalt concrete pressure water stability test device to solve the problems in the above background technique.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] An asphalt concrete pressure water stability test device includes a treatment tank. The upper and lower parts of the side wall of the treatment tank are respectively connected with a water inlet pipe and a drain pipe. A top plate is installed on the treatment tank, and a plurality of hinged first movable covers are circumferentially distributed on the top of the top plate. An electric heater is provided at the bottom of the treatment tank, a temperature sensor is provided on the inner wall of the treatment tank, and a controller electrically connected to the electrical equipment in the device is provided on the top plate; it further includes:

[0008] A movable assembly, which is arranged between the top plate and the bottom of the treatment tank;

[0009] A placement assembly, a plurality of placement assemblies are circumferentially connected to the movable assembly, and the placement assembly is used to place asphalt concrete specimens;

[0010] and a flipping component disposed on the movable component, the flipping component being used to drive the placement component to rotate.

[0011] As a further solution of the present invention, the movable component includes a fixed support plate fixedly arranged inside the processing box. A screw rod is rotatably connected to the fixed support plate. The top end of the screw rod is connected to a motor installed on the top plate. A threaded sleeve is threadedly sleeved on the screw rod. A plurality of cross plates are circumferentially distributed on the outer side of the threaded sleeve. A connecting sleeve is rotatably arranged between the fixed support plate and the top plate. A plurality of guide grooves are circumferentially distributed on the side wall of the connecting sleeve. A lifting sliding seat clamped with the corresponding cross plate is slidably arranged in the guide groove. A first rotating rod is rotatably arranged on the lifting sliding seat. The inner end of the first rotating rod is rotationally matched with the threaded sleeve.

[0012] As a further solution of the present invention, the placement component includes a placement frame connected to the outer end of the first rotating rod. Second movable covers are symmetrically and hingedly arranged on the top of the placement frame. A plurality of through grooves are distributed on the placement frame and the second movable covers. L-shaped strips are arranged at one end of the two second movable covers close to each other. The two L-shaped strips are movably clamped through a T-shaped frame.

[0013] As a further solution of the present invention, the flipping component includes a fixed bevel gear ring fixedly arranged on the fixed support plate. A bevel gear meshing with the fixed bevel gear ring is connected to one end of the first rotating rod close to the threaded sleeve. A plurality of connecting holes corresponding to the guide grooves one by one are circumferentially distributed at the bottom of the connecting sleeve. A plurality of positioning holes corresponding to the connecting holes are circumferentially distributed on the fixed support plate. A positioning column movably connected to the connecting hole is slidably arranged in the positioning hole. A second spring is connected between the positioning hole and the positioning column. A connecting column movably connected to the connecting hole is arranged at the bottom of the lifting sliding seat. An internal ratchet is arranged at the bottom of the inner side wall of the connecting sleeve. A plurality of pawls movably abutted against the internal ratchet are rotatably arranged on the fixed support plate. A first spring is connected between the pawl and the fixed support plate.

[0014] As a further solution of the present invention, it further includes a water circulation component. The water circulation component includes a water pump arranged on the outer wall of the processing box. The input end of the water pump is communicated with the bottom of the processing box through a suction pipe. One end of the suction pipe located inside the processing box is connected with a water suction cover. The output end of the water pump is communicated with water outlet frames rotatably arranged at both ends inside the processing box through a water guide pipe. A water equalizing net is arranged on one side of the water outlet frames close to each other. Brackets are symmetrically arranged on the inner wall of the processing box. A moving plate slidably arranged on the bracket and hinged to the corresponding end of each of the two water outlet frames is arranged on the bracket. A straight groove plate is arranged in the middle of the moving plate. A second rotating rod is rotatably arranged in the water suction cover. A plurality of rotating blades are circumferentially distributed on the second rotating rod located inside the water suction cover. One end of the second rotating rod penetrates through the water suction cover and is connected to a turntable movably arranged inside the processing box. A sliding column slidably matched with the straight groove plate is arranged on the outer edge of the turntable.

[0015] As a further solution of the present invention, the number of the first movable covers is the same as that of the placement frames, and there are at least 6 placement frames.

[0016] As a further solution of the present invention, the number of the positioning holes is the same as that of the connection holes, and both are set to 6.

[0017] As a further solution of the present invention, the size of the positioning posts is the same as that of the connection posts, and the outer diameter of the connection posts is the same as the inner diameter of the connection holes.

[0018] As a further solution of the present invention, there is a spacing between the water outlet frame and the inner wall of the treatment tank.

[0019] As a further solution of the present invention, the water guide pipe is a three-way flexible pipe.

[0020] In summary, compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0021] 1. In the present invention, through the cooperation of the electric heater and the temperature sensor, the water inside the treatment tank can be heated and monitored. Through the adjustment of the controller, the water temperature inside the treatment tank can be controlled within a suitable range. In actual operation, the water temperature can be maintained at 60 °C. Through the cooperation of the movable assembly and the placement assembly, the asphalt concrete specimen can be lifted and lowered, so that the asphalt concrete specimen moves below the water surface inside the treatment tank, facilitating the soaking treatment of the asphalt concrete specimen;

[0022] 2. In the present invention, the lifting slide seat drives the placement frame to revolve around the screw by driving the first rotating rod to rotate synchronously. At the same time, the first rotating rod drives the placement frame to rotate around the first rotating rod by meshing with the fixed bevel gear ring through the bevel gear. Under the dual action of rotation and revolution, all surfaces of the asphalt concrete specimen in the placement frame will be in full contact with the water inside the treatment tank, accelerating the water stability test of the asphalt concrete specimen, avoiding the problem of insufficient contact surface due to the direct placement of the asphalt concrete specimen at the bottom of the treatment tank, being more similar to the situation of long-term water accumulation or pavement cracking and water immersion on the road surface, meeting the actual use requirements, helping to accurately evaluate the water stability of the material, predicting the degree of early water damage in the project, and facilitating the subsequent safe construction of the project;

[0023] 3. In the present invention, during the left and right reciprocating movement of the moving plate, the water flow direction of the water sprayed out by the two water outlet frames can be in a changing state in real time, facilitating the full contact between the surface of the asphalt concrete specimen far from the outer wall of the connecting sleeve and the water; through the opposite water flow directions, a vortex can be formed at the center of the treatment tank, facilitating the full contact between the surface of the asphalt concrete specimen close to the outer wall of the connecting sleeve and the water; by flushing the surface of the asphalt concrete specimen with multi-directional water flows, the durability of the material can be evaluated more severely, helping to improve the quality control of the project.

[0024] To more clearly illustrate the structural features and functions of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. Description of the Drawings

[0025] Figure 1 It is a perspective view of the asphalt concrete pressure water stability test device in the embodiment of the invention.

[0026] Figure 2 It is a rear view of the asphalt concrete pressure water stability test device in the embodiment of the invention.

[0027] Figure 3 It is a sectional view of the asphalt concrete pressure water stability test device in the embodiment of the invention.

[0028] Figure 4 It is a sectional view of the movable component in the embodiment of the invention.

[0029] Figure 5 It is Figure 4 a partial enlarged view of part A in

[0030] Figure 6 It is a sectional view of the flipping component in the embodiment of the invention.

[0031] Figure 7 It is a structural schematic diagram of the placing component in the embodiment of the invention.

[0032] Figure 8 It is a structural schematic diagram of the water circulation component in the embodiment of the invention.

[0033] Figure 9 It is a structural schematic diagram of the turntable in the embodiment of the invention.

[0034] Reference numerals: 1, processing tank; 101, top plate; 102, first movable cover plate; 103, controller; 104, water inlet pipe; 105, drain pipe; 2, movable assembly; 201, motor; 202, screw rod; 203, connecting sleeve; 204, guide groove; 205, fixed support plate; 206, threaded kit; 207, cross plate; 208, lifting slide block; 209, first rotating rod; 3, flipping assembly; 301, fixed bevel gear ring; 302, bevel gear; 303, connecting column; 304, positioning hole; 305, connecting hole; 306, positioning column; 307, internal ratchet; 308, ratchet pawl; 309, first spring; 310, second spring; 4, placing assembly; 401, placing frame; 402, through groove; 403, second movable cover plate; 404, L-shaped strip; 405, T-shaped frame; 5, water circulation assembly; 501, water pump; 502, water suction pipe; 503, water guide pipe; 504, water suction hood; 505, water outlet frame; 506, water equalizing net; 507, moving plate; 508, bracket; 509, straight groove plate; 510, sliding column; 511, turntable; 512, second rotating rod; 513, rotating paddle; 6, asphalt concrete specimen; 7, electric heater; 8, temperature sensor. Detailed implementation manners

[0035] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] The following describes in detail the specific implementation of the present invention with reference to specific embodiments.

[0037] In an embodiment of the present invention, refer to Figures 1 - 3 , an asphalt concrete pressure water stability test device, including a processing tank 1, a water inlet pipe 104 and a drain pipe 105 are respectively connected to the upper and lower parts of the side wall of the processing tank 1, a top plate 101 is installed on the processing tank 1, a plurality of hinged first movable cover plates 102 are circumferentially distributed on the top of the top plate 101, a movable assembly 2 is provided between the top plate 101 and the bottom of the processing tank 1, a plurality of placing assemblies 4 for placing asphalt concrete specimens 6 are circumferentially connected to the movable assembly 2, a flipping assembly 3 for driving the placing assembly 4 to rotate is provided on the movable assembly 2, a water circulation assembly 5 is provided on the processing tank 1, an electric heater 7 is provided at the bottom of the processing tank 1, a temperature sensor 8 is provided on the inner wall of the processing tank 1, and a controller 103 electrically connected to the electrical equipment in the device is provided on the top plate 101.

[0038] In this embodiment, through the cooperation of the electric heater 7 and the temperature sensor 8, the water inside the treatment tank 1 can be heated and monitored. Through the adjustment of the controller 103, the water temperature inside the treatment tank 1 can be controlled within a suitable range. In actual operation, the water temperature can be maintained at 60 °C. Through the placement component 4, the asphalt concrete specimen 6 can be stably placed, preventing the asphalt concrete specimen 6 from falling during the flipping process. Through the cooperation of the movable component 2 and the placement component 4, the asphalt concrete specimen 6 can be lifted and lowered, facilitating the insertion and removal of the asphalt concrete specimen 6. Through the cooperation of the movable component 2, the flipping component 3 and the placement component 4, the revolution and rotation of the asphalt concrete specimen 6 can be achieved, facilitating the full contact between the surface of the asphalt concrete specimen 6 and the water. Through the water circulation component 5, the water inside the treatment tank 1 can be circulated, and at the same time, the automatic reciprocating swing of the water flow direction inside the treatment tank 1 can be realized, with the swing frequency changing synchronously with the water circulation speed, facilitating the full contact between the water and the asphalt concrete specimen 6, ensuring that the asphalt concrete specimen 6 is in a saturated water state, and having the effects of water temperature regulation, stable placement, flexible flipping, full and sufficient contact, high evaluation accuracy, reliable structure, and simplicity and practicality;

[0039] Wherein, a water inlet valve is provided on the water inlet pipe 104. Through the cooperation of the water inlet pipe 104 and the water inlet valve, a sufficient amount of water can be injected into the treatment tank 1. A drain valve is provided on the drain pipe 105. Through the cooperation of the drain pipe 105 and the drain valve, the water inside the treatment tank 1 can be drained.

[0040] In an embodiment of the present invention, referring to Figures 1 - 7 , the movable component 2 includes a fixed support plate 205 fixedly arranged inside the treatment tank 1. A screw rod 202 is rotatably connected to the fixed support plate 205. The top end of the screw rod 202 is connected to a motor 201 installed on the top plate 101. A threaded sleeve 206 is threadedly sleeved on the screw rod 202. A plurality of cross plates 207 are circumferentially distributed on the outer side of the threaded sleeve 206. A connecting sleeve 203 is rotatably arranged between the fixed support plate 205 and the top plate 101. A plurality of guide grooves 204 are circumferentially distributed on the side wall of the connecting sleeve 203. An elevating slide seat 208 that is clamped with the corresponding cross plate 207 is slidably arranged in the guide groove 204. A first rotating rod 209 is rotatably arranged on the elevating slide seat 208. The inner end of the first rotating rod 209 is rotatably matched with the threaded sleeve 206.

[0041] The placement component 4 includes a placement frame 401 connected to the outer end of the first rotating rod 209. The top of the placement frame 401 is symmetrically and hingedly connected with second movable covers 403. A number of through slots 402 are distributed on the placement frame 401 and the second movable covers 403. L-shaped bars 404 are provided at one end of the two second movable covers 403 close to each other, and the two L-shaped bars 404 are movably clamped through a T-shaped frame 405.

[0042] In this embodiment, in the initial state, the threaded sleeve 206, the cross plate 207, and the lifting slide block 208 are at the highest point. At this time, the placement component 4 is at the highest point, and the position of the connecting sleeve 203 is fixed. The staff opens the first movable cover 102, pushes the T-shaped frame 405 to one side, releases the clamping between the two L-shaped bars 404, turns the second movable cover 403 outward to open it, and the asphalt concrete specimen 6 can be placed into the placement component 4 or the asphalt concrete specimen 6 in the placement component 4 can be taken out.

[0043] When it is necessary to soak the asphalt concrete specimen 6 placed in the placement component 4, the motor 201 drives the screw 202 to rotate clockwise. The screw 202 drives the threaded sleeve 206 and the lifting slide block 208 to move downward by means of threaded connection with the threaded sleeve 206, sliding fit of the lifting slide block 208 with the guide groove 204, and clamping of the cross plate 207 with the lifting slide block 208. The lifting slide block 208 drives the placement frame 401 to move downward synchronously by means of rotational cooperation with the first rotating rod 209. The placement frame 401 drives the asphalt concrete specimen 6 to move downward synchronously by means of cooperation with the symmetrically arranged second movable covers 403, so that the asphalt concrete specimen 6 moves below the water surface inside the treatment tank 1, facilitating the soaking treatment of the asphalt concrete specimen 6.

[0044] When it is necessary to take out the saturated asphalt concrete specimen 6 for testing, the motor 201 drives the screw 202 to rotate counterclockwise. The screw 202 drives the threaded sleeve 206 and the lifting slide block 208 to move upward by means of threaded connection with the threaded sleeve 206, sliding fit of the lifting slide block 208 with the guide groove 204, and clamping of the cross plate 207 with the lifting slide block 208. The lifting slide block 208 drives the placement frame 401 to move upward synchronously by means of rotational cooperation with the first rotating rod 209. The placement frame 401 drives the asphalt concrete specimen 6 to move upward synchronously by means of cooperation with the symmetrically arranged second movable covers 403.

[0045] Open the corresponding first movable cover plate 102 and second movable cover plate 403 according to requirements, take out the asphalt concrete specimen 6 in the corresponding placement frame 401, and perform corresponding stability tests on the asphalt concrete specimen 6 in the saturated water state to obtain the measured stability (MS1) of the test group. Perform stability tests on the asphalt concrete specimens 6 of the control group to obtain the measured stability (MS0) of the control group. That is, the residual stability of the asphalt concrete specimen 6 is MS1 / MS0*100%, which can be used to evaluate the degree of water damage;

[0046] Among them, the number of the first movable cover plates 102 is the same as the number of the placement frames 401. There are at least 6 placement frames 401. By measuring the residual stability data of multiple groups of asphalt concrete specimens 6, the accuracy of evaluating the degree of water damage is improved, and the test error is reduced.

[0047] In an embodiment of the present invention, refer to Figures 1 - 7 The flipping assembly 3 includes a fixed bevel gear ring 301 fixedly arranged on the fixed support plate 205. One end of the first rotating rod 209 close to the threaded sleeve 206 is connected with a bevel gear 302 meshing with the fixed bevel gear ring 301. A plurality of connection holes 305 corresponding to the guide grooves 204 one by one are circumferentially distributed at the bottom of the connection sleeve 203. A plurality of positioning holes 304 corresponding to the connection holes 305 are circumferentially distributed on the fixed support plate 205. A positioning column 306 movably connected with the connection hole 305 is slidably arranged in the positioning hole 304. A second spring 310 is connected between the positioning hole 304 and the positioning column 306. A connection column 303 movably connected with the connection hole 305 is arranged at the bottom of the lifting slide 208. An internal ratchet 307 is arranged on the inner side wall of the bottom of the connection sleeve 203. A plurality of pawls 308 movably abutted against the internal ratchet 307 are rotatably arranged on the fixed support plate 205. A first spring 309 is connected between the pawl 308 and the fixed support plate 205.

[0048] In this embodiment, in the initial state, the positioning column 306 is connected to the connection hole 305, the positioning hole 304 is in the original length, and the lifting slide 208 is located at the highest point. At this time, the connection column 303 is far away from the connection hole 305, and the position of the connection sleeve 203 is fixed and cannot rotate;

[0049] When the motor 201 drives the screw rod 202 to rotate clockwise, the screw rod 202 drives the threaded sleeve 206 and the lifting slide seat 208 to move downward by means of being threadedly connected with the threaded sleeve 206, the lifting slide seat 208 being slidably engaged with the guide groove 204, and the cross plate 207 being clamped with the lifting slide seat 208. The lifting slide seat 208 drives the connecting column 303 to move downward synchronously. When the connecting column 303 moves downward to correspond to the connecting hole 305 and then continues to move downward, the connecting column 303 will push the positioning column 306 into the positioning hole 304. The positioning column 306 is pressed and moves downward into the positioning hole 304, releasing the positioning of the connecting sleeve 203. At the same time, the second spring 310 is stressed and contracts, and the connecting column 303 is connected to the connecting hole 305, realizing the synchronous rotation of the connecting sleeve 203 and the threaded sleeve 206;

[0050] Since the connecting sleeve 203 is in an active state, that is, the connecting sleeve 203 is rotationally engaged with the fixed support plate 205. When the motor 201 continues to drive the screw rod 202 to rotate clockwise, the screw rod 202 drives the threaded sleeve 206 and the lifting slide seat 208 to rotate synchronously by means of being threadedly connected with the threaded sleeve 206, the lifting slide seat 208 being slidably engaged with the guide groove 204, the cross plate 207 being clamped with the lifting slide seat 208, and the connecting sleeve 203 being rotationally engaged with the fixed support plate 205. The lifting slide seat 208 drives the placement frame 401 to revolve around the screw rod 202 by driving the first rotating rod 209 to rotate synchronously. At the same time, the first rotating rod 209 drives the placement frame 401 to rotate around the first rotating rod 209 by means of the bevel gear 302 being meshed with the fixed bevel gear ring 301. Under the dual action of rotation and revolution, all surfaces of the asphalt concrete specimen 6 in the placement frame 401 will be in full and sufficient contact with the water inside the treatment tank 1, accelerating the water stability test of the asphalt concrete specimen 6, avoiding the problem of insufficient contact surface when the asphalt concrete specimen 6 is directly placed at the bottom of the treatment tank 1, being more similar to the situation of long-term water accumulation or pavement cracking and water immersion on the road surface, meeting the actual use requirements, helping to accurately evaluate the water stability of the material, predicting the degree of early water damage in the project, and facilitating subsequent engineering construction;

[0051] During the clockwise rotation of the connecting sleeve 203, the connecting sleeve 203 drives the inner ratchet wheel 307 to rotate synchronously. The inner ratchet wheel 307 realizes the one-way clockwise rotation of the inner ratchet wheel 307 by being in movable contact with the pawl 308 and the first spring 309 being connected to the pawl 308;

[0052] When it is necessary to take out the asphalt concrete specimen 6 in a saturated water state, the motor 201 drives the screw 202 to rotate counterclockwise. Due to the cooperation of the inner ratchet 307 and the pawl 308, the connecting sleeve 203 cannot rotate counterclockwise, that is, the connecting sleeve 203 is in a corresponding fixed state. The screw 202 drives the threaded sleeve 206 and the lifting slide 208 to move upward by means of threaded connection with the threaded sleeve 206, sliding fit between the lifting slide 208 and the guide groove 204, and clamping connection between the cross plate 207 and the lifting slide 208. The lifting slide 208 disconnects the connection between the connecting column 303 and the connection hole 305 by driving the connecting column 303 to move upward synchronously. Since the second spring 310 is in a compressed state, during the upward movement of the connecting column 303, the second spring 310 pushes the positioning column 306 to move upward by elongating upward, so that the positioning column 306 is reconnected to the connection hole 305, realizing the stable positioning of the connecting sleeve 203, that is, the connecting sleeve 203 cannot rotate clockwise or counterclockwise. Then, the screw 202 drives the threaded sleeve 206 and the lifting slide 208 to move upward by means of threaded connection with the threaded sleeve 206, sliding fit between the lifting slide 208 and the guide groove 204, and clamping connection between the cross plate 207 and the lifting slide 208. The lifting slide 208 drives the placement frame 401 to move upward synchronously by means of rotational cooperation with the first rotating rod 209. The placement frame 401 drives the asphalt concrete specimen 6 to move upward synchronously by cooperating with the symmetrically arranged second movable cover plate 403, facilitating the taking out and testing of the asphalt concrete specimen 6 in a saturated water state;

[0053] Wherein, the number of the positioning holes 304 is the same as that of the connection holes 305 and is set to 6. The size of the positioning column 306 is the same as that of the connecting column 303, and the outer diameter of the connecting column 303 is the same as the inner diameter of the connection hole 305, facilitating the reliable positioning of the connecting sleeve 203.

[0054] In an embodiment of the present invention, see Figures 1 - 9, the water circulation component 5 includes a water pump 501 disposed on the outer wall of the processing tank 1. The input end of the water pump 501 is communicated with the bottom of the processing tank 1 through a water suction pipe 502. One end of the water suction pipe 502 located inside the processing tank 1 is connected with a water suction hood 504. The output end of the water pump 501 is communicated with water outlet frames 505 rotatably disposed at both ends inside the processing tank 1 through a water guide pipe 503. A water equalizing net 506 is provided on one side of the water outlet frames 505 close to each other. Brackets 508 are symmetrically provided on the inner wall of the processing tank 1. Moving plates 507 respectively hinged to corresponding ends of the two water outlet frames 505 are slidably provided on the brackets 508. A straight groove plate 509 is provided in the middle of the moving plate 507. A second rotating rod 512 is rotatably provided inside the water suction hood 504. A plurality of rotating blades 513 are circumferentially distributed on the second rotating rod 512 located inside the water suction hood 504. One end of the second rotating rod 512 penetrates through the water suction hood 504 and is connected with a turntable 511 movably disposed inside the processing tank 1. A sliding column 510 slidably matched with the straight groove plate 509 is provided on the outer edge of the turntable 511.

[0055] In this embodiment, in the initial state, the turntable 511 is located in the middle of the turntable 511. The water pump 501 pumps out the water at the bottom of the processing tank 1 through the water suction pipe 502 and the water suction hood 504. The pumped water is sprayed out from the water equalizing net 506 in a manner of being communicated through the water guide pipe 503 and the water outlet frames 505. The spraying direction of the water flow is towards the center of the processing tank 1, and the water inside the processing tank 1 can flow in different directions.

[0056] During the process that the water at the bottom of the processing tank 1 enters the water suction pipe 502 through the water suction hood 504, the inhaled water flow drives the second rotating rod 512 to rotate by contacting the rotating blades 513. The second rotating rod 512 drives the sliding column 510 to rotate synchronously by being connected with the turntable 511. The sliding column 510 drives the moving plate 507 to move left and right reciprocally by being slidably matched with the straight groove plate 509 and the moving plate 507 being slidably matched with the bracket 508.

[0057] During the process of the moving plate 507 moving to one side, one end of the moving plate 507 drives the corresponding side of the water outlet frame 505 to rotate towards the turntable 511 by means of being hinged to the water outlet frame 505 on one side and the water outlet frame 505 being rotationally matched with the inner wall of the treatment tank 1. The other end of the moving plate 507 drives the water outlet frame 505 on the other side to rotate away from the turntable 511 by means of being hinged to the water outlet frame 505 on the other side and the water outlet frame 505 being rotationally matched with the inner wall of the treatment tank 1, so that the water flow directions of the water sprayed out through the two water outlet frames 505 are in a reverse parallel state. During the left-right reciprocating movement of the moving plate 507, the water flow directions of the water sprayed out by the two water outlet frames 505 can be in a changing state in real time, which is convenient for the surface of the asphalt concrete specimen 6 far from the outer wall of the connecting sleeve 203 to be fully contacted with water. Through the opposite water flow directions, a vortex can be formed at the center of the treatment tank 1, which is convenient for the surface of the asphalt concrete specimen 6 close to the outer wall of the connecting sleeve 203 to be fully contacted with water;

[0058] By means of multi-directional water flow scouring on the surface of the asphalt concrete specimen 6, the durability of the material can be evaluated more severely, which helps to improve the quality control of the project;

[0059] Among them, the water guide pipe 503 is a three-way flexible pipe, which is convenient for the rotation of the water outlet frame 505. There is a spacing between the water outlet frame 505 and the inner wall of the treatment tank 1, which can ensure the swinging space of the water outlet frame 505.

[0060] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An asphalt concrete pressure water stability test device, comprising a treatment tank, an inlet pipe and a drain pipe are respectively connected to the upper and lower parts of the side wall of the treatment tank, and a top plate is installed on the treatment tank, and it is characterized in that, A number of first movable covers are circumferentially distributed on the top of the top plate. An electric heater is provided at the bottom of the treatment tank. A temperature sensor is provided on the inner wall of the treatment tank. A controller electrically connected to the electrical equipment inside the device is provided on the top plate. Further included are: A movable assembly is arranged between the top plate and the bottom of the treatment tank. The movable assembly includes a fixed support plate fixedly arranged inside the treatment tank. A screw rod is rotatably connected to the fixed support plate. The top end of the screw rod is connected to a motor installed on the top plate. A threaded sleeve is threadedly sleeved on the screw rod. A number of cross plates are circumferentially distributed on the outer side of the threaded sleeve. A connecting sleeve is rotatably arranged between the fixed support plate and the top plate. A number of guide grooves are circumferentially distributed on the side wall of the connecting sleeve. A lifting sliding seat clamped with the corresponding cross plate is slidably arranged in the guide groove. A first rotating rod is rotatably arranged on the lifting sliding seat. The inner end of the first rotating rod is rotationally matched with the threaded sleeve. A placing assembly is circumferentially connected to the movable assembly. The placing assembly is used for placing asphalt concrete specimens. And a flipping assembly is arranged on the movable assembly. The flipping assembly is used to drive the placing assembly to rotate. The flipping assembly includes a fixed bevel gear ring fixedly arranged on the fixed support plate. A bevel gear meshing with the fixed bevel gear ring is connected to one end of the first rotating rod close to the threaded sleeve. A number of connecting holes corresponding to the guide grooves one by one are circumferentially distributed at the bottom of the connecting sleeve. A number of positioning holes corresponding to the connecting holes are circumferentially distributed on the fixed support plate. A positioning column movably connected to the connecting hole is slidably arranged in the positioning hole. A second spring is connected between the positioning hole and the positioning column. A connecting column movably connected to the connecting hole is arranged at the bottom of the lifting sliding seat. An internal ratchet is arranged at the bottom of the inner side wall of the connecting sleeve. A number of pawls movably abutted against the internal ratchet are rotatably arranged on the fixed support plate. A first spring is connected between the pawl and the fixed support plate. A water circulation assembly is further included. The water circulation assembly includes a water pump arranged on the outer wall of the treatment tank. The input end of the water pump is communicated with the bottom of the treatment tank through a suction pipe. One end of the suction pipe located inside the treatment tank is connected with a suction hood. The output end of the water pump is communicated with water outlet frames rotatably arranged at both ends inside the treatment tank through a water guide pipe. A water equalizing net is arranged on one side of the water outlet frames close to each other. Brackets are symmetrically arranged on the inner wall of the treatment tank. A moving plate respectively hinged to the corresponding ends of the two water outlet frames is slidably arranged on the brackets. A straight groove plate is arranged in the middle of the moving plate. A second rotating rod is rotatably arranged in the suction hood. A number of rotating blades are circumferentially distributed on the second rotating rod located inside the suction hood. One end of the second rotating rod penetrates through the suction hood and is connected with a turntable movably arranged inside the treatment tank. A sliding column slidably matched with the straight groove plate is arranged on the outer edge of the turntable.

2. The asphalt concrete pressure water stability test device according to claim 1, wherein, The placing assembly includes a placing frame connected to the outer end of the first rotating rod. Second movable covers are symmetrically and hingedly arranged on the top of the placing frame. A number of through grooves are distributed on the placing frame and the second movable covers. L-shaped strips are arranged at one end of the two second movable covers close to each other. The two L-shaped strips are movably clamped through a T-shaped frame.

3. The asphalt concrete pressure water stability test device according to claim 2, characterized in that, The number of the first movable covers is the same as the number of the placing frames, and there are at least 6 placing frames.

4. The asphalt concrete pressure water stability test device according to claim 1, characterized in that, The number of the positioning holes is the same as the number of the connecting holes and both are set to 6.

5. The asphalt concrete pressure water stability test device according to claim 1, characterized in that, The size of the positioning post is the same as that of the connecting post, and the outer diameter of the connecting post is the same as the inner diameter of the connecting hole.

6. The asphalt concrete pressure water stability test device according to claim 1, characterized in that There is a spacing between the water outlet frame and the inner wall of the treatment tank.

7. The asphalt concrete pressure water stability test device according to claim 1, characterized in that The water guide pipe is a three-way flexible pipe.

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