A device and method for immersion centrifuge separation for testing asphalt adhesion

Abstract

The application discloses a kind of water immersion centrifugal separation detection asphalt adhesion device and method, mainly related to detection device technical field.It includes workbench, to dry the oven of the asphalt attached to the surface of stone, to separate the centrifuge of stone and asphalt, adjusting device and discharging device, the lower surface of workbench is fixedly connected with several support columns playing supporting role, one side of workbench is equipped with electric control box, central processing system is arranged in the inside of electric control box, oven and centrifuge are set to the upper portion of workbench by means of discharging device, discharging device is located on the upper surface of workbench, adjusting device is located on the upper surface of workbench, adjusting device includes material holding assembly, to transfer material holding assembly transfer assembly, material holding assembly includes material cylinder to place stone and asphalt.The beneficial effects of the application are that asphalt adhesion detection experiment can be automatically carried out, personnel work intensity can be reduced, experimental period can be shortened, and asphalt adhesion detection efficiency can be improved.

Description

Technical Field

[0001] This invention relates to the field of testing equipment technology, and in particular to a device and method for detecting the adhesiveness of asphalt by immersion centrifugation. Background Technology

[0002] The asphalt adhesion testing device is mainly used to quantitatively assess the adhesion performance between asphalt and aggregates, thereby ensuring the anti-stripping durability of asphalt pavements.

[0003] Existing technologies, such as the invention with publication number CN106996910B, disclose a test device and method for testing the interfacial adhesion of asphalt aggregates. The key technical points are: the bottom opening of the outer casing is fastened to the control box; the lower end of the lifting rod is connected to the output shaft of the power device; the upper end of the lifting rod extends out of the control box and is inserted into the outer casing; a first clamping device is fixed to the upper end of the lifting rod; a second clamping device is disposed on the control box; the first clamping device faces the second clamping device; one end of the test piece is clamped on the first clamping device; the other end of the test piece is clamped on the second clamping device; a display is provided on the outer wall of the control box; a sensor is used to detect the vertical force between the first clamping device and the test piece; the control box is connected to the control end of the power device, the output end of the sensor, and the display. This device and method can evaluate the adhesion of asphalt aggregates.

[0004] Regarding the above-mentioned issues, the following technical defects have been found: When using existing asphalt adhesion testing devices, the numerous testing steps and the inability to automatically test the adhesion of asphalt increase the workload of personnel, extend the experimental cycle, and reduce the efficiency of asphalt adhesion testing. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing devices for detecting asphalt adhesion, which cannot automatically detect the adhesion of asphalt during use, thus increasing the workload of personnel, increasing the experimental cycle, and reducing the efficiency of asphalt adhesion detection. Therefore, this invention proposes a device and method for detecting asphalt adhesion by immersion and centrifugation.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a device for detecting the adhesion of asphalt by immersion centrifugation, comprising a workbench, an oven for drying asphalt adhering to the surface of gravel, a centrifuge for separating gravel and asphalt, an adjusting device, and a discharging device. Several support columns are fixedly connected to the lower surface of the workbench for support. An electrical control box is installed on one side of the workbench, and a central processing system is installed inside the electrical control box. The oven and the centrifuge are positioned above the workbench via the discharging device, which is located on the upper surface of the workbench. The adjusting device is also located on the upper surface of the workbench. The adjusting device includes a material-collecting assembly and a transfer assembly for transferring the material-collecting assembly. The material-collecting assembly includes a material cylinder for holding gravel and asphalt. The size of the material cylinder is adapted to the internal dimensions of the oven and the centrifuge. Several circular holes are provided on the outer wall and lower surface of the material cylinder. A component is fixedly connected to the bottom of the inner wall of the material cylinder to prevent the bottom of the material cylinder from colliding with the center of the centrifuge. The cylindrical cover is subject to impact. The upper end of the material cylinder is fitted with a feed hopper for adding asphalt and gravel. A sealing plate is fixedly connected to the inner wall of the feed hopper. A lower screen plate for screening gravel is fixedly connected to the upper surface of the sealing plate. The screen holes of the lower screen plate communicate with the feed hopper and the material cylinder. A supporting ear plate is fixedly connected to the outer wall of the feed hopper. A limiting rod for guiding the lifting and lowering process of the feed hopper slides through the surface of the ear plate. One end of the short arm of the limiting rod is connected to… The outer wall of the material cylinder is fixedly connected, and the arc surface of the long arm end of the limiting rod is fitted with a return spring for driving the feed hopper to quickly reset. The two ends of the return spring are fixedly connected to the limiting rod and the ear plate, respectively. A rack is fixedly connected to the lower surface of the ear plate. A motor is fixedly connected to the outer wall of the material cylinder. The output end of the motor is fixedly connected to a half-tooth gear for driving the rack to rise and fall. The half-tooth gear meshes with the rack. The upper surface of the feed hopper is fixedly connected to a baffle to prevent stones from falling.

[0007] The effects achieved by the above components are as follows: by setting up the adjustment device, the asphalt adhesion test can be carried out automatically, which can reduce the workload of personnel, shorten the test cycle, and improve the efficiency of asphalt adhesion test.

[0008] Preferably, the transfer assembly includes a support frame, one side of which is fixedly connected to the upper surface of the workbench. The support frame has a U-shaped cross-section. Two drive wheels are rotatably connected to one side of the support frame. The arc surfaces of the two drive wheels are connected to a belt for controlling the lateral movement of the material-collecting assembly. A servo motor for driving the drive wheels is fixedly connected to the side of the support frame away from the drive wheels. The output end of the servo motor is fixedly connected to one end of one of the drive wheels. An adjusting block is fixedly connected to the lower surface of the outer wall of the belt. A cylinder for driving the longitudinal movement of the material-collecting assembly is fixedly connected to the lower surface of the block. A weighing scale is fixedly connected to the output end of the cylinder. A hook is fixedly connected to the lower surface of the weighing scale. A lifting ring is abutted against the inner wall of the hook. Several lifting ropes are fixedly connected to the outer wall of the lifting ring. The lifting ropes are fixedly connected to the upper surface of the material-blocking cover. A guide rod for guiding the movement of the adjusting block is slidably passed through the side of the adjusting block. Limiting plates for supporting the guide rod are fixedly connected to both ends of the guide rod. The upper surface of the limiting plate is fixedly connected to the support frame.

[0009] The effect achieved by the above components is that by setting the above structure, the lateral and longitudinal positions of the material-collecting assembly can be automatically adjusted, so that the material-collecting assembly can be automatically transferred to the oven or centrifuge, thereby improving the ease of use and automation of the asphalt adhesion testing device.

[0010] Preferably, an upper screen plate is attached to the upper surface of the lower screen plate, the screen holes of the upper screen plate are the same size as those of the lower screen plate, a motor base for support is fixedly connected to the outer wall of the feed hopper, a drive motor is fixedly connected to the inner wall of the motor base, a lead screw is fixedly connected to the output end of the drive motor, a connecting plate for moving the upper screen plate is threaded to the arc surface of the lead screw, the lower surface of the connecting plate is fixedly connected to the upper surface of the upper screen plate, a positioning plate is fixedly connected to the upper surface of the connecting plate, a positioning rod for preventing rotational displacement of the connecting plate during movement is slidably passed through the side of the positioning plate, and one end of the positioning rod is fixedly connected to the outer wall of the motor base.

[0011] The effect achieved by the above components is as follows: by setting the above structure, the size of the holes formed by the sieve holes of the upper sieve plate and the sieve holes of the lower sieve plate can be automatically adjusted, so that the device can screen stones of different sizes, and then select stones of different sizes for asphalt adhesion testing. The test results of stones of a single size may have limitations, while multi-size testing provides more data points, which can enhance the statistical significance and reliability of adhesion test results.

[0012] Preferably, the upper surface of the sealing plate is provided with a scale, and the upper surface of the upper sieve plate is fixedly connected with a pointer.

[0013] The effect achieved by the above components is that, by setting a scale and pointer, the size of the holes formed by the sieve holes of the upper sieve plate and the sieve holes of the lower sieve plate can be precisely adjusted.

[0014] Preferably, the half-gear has a toothed hole on the side away from the motor, a support plate is fixedly connected to the outer wall of the barrel to provide support, an electric push rod is fixedly connected to one side of the support plate, and a toothed block for locking the half-gear is fixedly connected to the output end of the electric push rod, the size of the toothed block being adapted to the toothed hole.

[0015] The effect achieved by the above components is that, by setting the above structure, when the half-tooth gear rotates and drives the feed hopper to move to the appropriate position, the tooth block can be automatically driven to lock the half-tooth gear, thereby improving the stability of the feed hopper after it moves to the appropriate position.

[0016] Preferably, a protective cover is fixedly connected to the outer wall of the material cylinder, and the motor, the half-tooth gear, the electric push rod and the tooth block are located inside the protective cover.

[0017] The effect achieved by the above components is that by setting up protective covers, the motor, half-gear, electric push rod and tooth block can be covered and protected, thereby improving the service life of these parts and improving the smoothness of the operation of the upper screen plate.

[0018] Preferably, the regulating device further includes a water tank for storing water, one side of which is fixedly connected to one side of the workbench. A delivery pump is installed inside the water tank, and an inlet pipe and a corrugated pipe are fixedly connected to the upper surface of the water tank. The end of the corrugated pipe away from the water tank is fixedly connected to a nozzle for spraying water into the centrifuge.

[0019] The effect achieved by the above components is that by setting up the above structure, personnel can easily and conveniently carry out the water addition step, which improves the ease of use of the asphalt adhesion testing device.

[0020] Preferably, the discharge device includes a hydraulic cylinder, which is fixed to the upper surface of the workbench. A rotating seat is fixedly connected to the output end of the hydraulic cylinder. A connecting plate for moving and rotating the oven and centrifuge is rotatably connected to the inner wall of the rotating seat. The upper surface of the connecting plate is fixedly connected to the lower surface of the oven and the centrifuge. A sludge collection box for collecting water and asphalt flowing out of the material cylinder is fixedly connected to the upper surface of the connecting plate. A collection box for storing waste materials inside the oven, the sludge collection box, and the centrifuge is fixedly connected to one side of the workbench. An outlet pipe is fixedly connected to one side of the outer wall of the collection box. A sealing plug for sealing the outlet pipe is fixedly connected to the inner wall of the outlet pipe.

[0021] The effect achieved by the above components is as follows: by setting up a discharge device, after the asphalt adhesion test is completed, the oven, sludge collection box and centrifuge can be automatically driven to tilt and discharge the waste inside, which facilitates the next use of the asphalt adhesion test device.

[0022] Preferably, the upper surface of the workbench is fixedly connected with several baffles that enable the rotating seat to move quickly to a designated position, and one side of the baffles is in contact with the rotating seat.

[0023] The effect achieved by the above components is that, by setting up a rotating seat, when the oil cylinder drives the rotating seat to fit against one side of the baffle, the operation of the oil cylinder can be stopped, thereby enabling the rotating seat to move quickly to the designated position.

[0024] A method for detecting the adhesiveness of asphalt by immersion and centrifugation includes the following steps:

[0025] S1. First, the stones are screened so that the screened stones enter the material cylinder. Then, the material cylinder is driven by the transfer component into the oven containing a certain amount of asphalt so that the stones are coated with asphalt material.

[0026] S2, use the transfer component to drive the material cylinder to cool the asphalt-coated stones, and weigh the asphalt-coated stones after cooling;

[0027] S3, using the transfer component, put the asphalt-coated stones into a centrifuge filled with water, and start the centrifuge to separate the stones from the asphalt;

[0028] S4. After the centrifuge is running, the material collection assembly is taken out of the centrifuge, dried, and the mass of the stones wrapped after centrifugation is measured. Finally, the mass difference is used to evaluate the adhesion strength of the asphalt.

[0029] In summary, the beneficial effects of the present invention are as follows:

[0030] In this invention, by setting an adjustment device, asphalt adhesion testing experiments can be carried out automatically, which can reduce the workload of personnel, shorten the test cycle, and improve the efficiency of asphalt adhesion testing.

[0031] In this invention, by setting up a discharge device, after the asphalt adhesion testing operation is completed, the oven, sludge collection box and centrifuge can be automatically driven to tilt and discharge the waste inside, which facilitates the next use of the asphalt adhesion testing device. Attached Figure Description

[0032] Appendix Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0033] Appendix Figure 2 This is the invention Figure 1 The structural diagram on the left;

[0034] Appendix Figure 3 This is a schematic diagram of the structure of the adjusting device of the present invention;

[0035] Appendix Figure 4 This is a schematic diagram of the material-collecting assembly in the adjusting device of the present invention;

[0036] Appendix Figure 5 This is a partial structural disassembly diagram of the material-holding assembly of the present invention;

[0037] Appendix Figure 6 This is the invention Figure 4 The diagram shows a partial structure.

[0038] Appendix Figure 7 This is a partial structural schematic diagram of the material-holding assembly of the present invention;

[0039] Appendix Figure 8 This is a schematic diagram of the internal structure of the barrel of the present invention;

[0040] Appendix Figure 9 This is a schematic diagram of the transfer component in the regulating device of the present invention;

[0041] Appendix Figure 10 This is a schematic diagram of the water tank structure of the present invention;

[0042] Appendix Figure 11 This is a schematic diagram of the material discharge device of the present invention.

[0043] The following are the labels in the attached diagram: 1. Workbench; 2. Support column; 3. Adjustment device; 31. Material hopper assembly; 3101. Material cylinder; 3102. Circular hole; 3103. Circular cover; 3104. Feed hopper; 3105. Material baffle; 3106. Sealing plate; 3107. Lower screen plate; 3108. Upper screen plate; 3109. Motor base; 3110. Drive motor; 3111. Lead screw; 3112. Connecting plate; 3113. Positioning plate; 3114. Positioning rod; 3115. Scale; 3116. Pointer; 3117. Ear plate; 3118. Limiting rod; 3119. Return spring; 3120. Rack; 3121. Motor; 3122. Half gear; 3123. Tooth hole; 3124. Support plate; 3 125. Electric actuator; 3126. Tooth block; 3127. Protective cover; 32. Transfer assembly; 3201. Support frame; 3202. Drive wheel; 3203. Belt; 3204. Servo motor; 3205. Adjusting block; 3206. Cylinder; 3207. Hanging scale; 3208. Hook; 3209. Lifting ring; 3210. Lifting rope; 3211. Guide rod; 3212. Limiting plate; 33. Water tank; 34. Water inlet pipe; 35. Corrugated pipe; 36. Nozzle; 4. Discharge device; 401. Hydraulic cylinder; 402. Rotating seat; 403. Connecting plate; 404. Sludge collection box; 405. Baffle; 406. Collection box; 407. Outlet pipe; 408. Sealing plug; 5. Electrical control box; 6. Drying oven; 7. Centrifuge. Detailed Implementation

[0044] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0045] Reference Figure 1 and Figure 2 As shown, the present invention provides a technical solution: a device for detecting the adhesion of asphalt by immersion centrifugation, comprising a workbench 1, an oven 6 for drying asphalt adhering to the surface of stones, a centrifuge 7 for separating stones and asphalt, an adjusting device 3, and a discharging device 4. Several support columns 2 are fixedly connected to the lower surface of the workbench 1 to provide support. An electrical control box 5 is installed on one side of the workbench 1. The electrical control box 5 is equipped with a central processing system. The oven 6 and the centrifuge 7 are positioned above the workbench 1 by means of the discharging device 4.

[0046] The discharge device 4 is located on the upper surface of the workbench 1, and the adjustment device 3 is located on the upper surface of the workbench 1.

[0047] The specific settings and functions of the regulating device 3 and the discharging device 4 will be explained in detail below.

[0048] reference Figures 3 to 10As shown in this embodiment: the adjusting device 3 includes a material-collecting assembly 31 and a transfer assembly 32 for transferring the material-collecting assembly 31. The material-collecting assembly 31 includes a material cylinder 3101 for placing stones and asphalt. The size of the material cylinder 3101 is adapted to the internal size of the drying oven 6 and the centrifuge 7. Several round holes 3102 are opened on the outer wall and lower surface of the material cylinder 3101. The bottom of the inner wall of the material cylinder 3101 is fixedly connected to prevent the bottom of the material cylinder 3101 from touching the ground. The central component inside the centrifuge 7 is a circular cover 3103 that is subject to impact. The upper end of the feed cylinder 3101 is fitted with a feed hopper 3104 for adding asphalt and gravel into the feed cylinder 3101. A sealing plate 3106 is fixedly connected to the inner wall of the feed hopper 3104. A lower screen plate 3107 for screening gravel is fixedly connected to the upper surface of the sealing plate 3106. The screen holes of the lower screen plate 3107 are connected to the feed hopper 3104 and the feed cylinder 3101. The feed hopper 310... The outer wall of the feed hopper 3104 is fixedly connected to a supporting ear plate 3117. A limiting rod 3118 for guiding the lifting and lowering process of the feed hopper 3104 is slidably inserted through the surface of the ear plate 3117. One end of the short arm of the limiting rod 3118 is fixedly connected to the outer wall of the feed cylinder 3101. The arc surface of the long arm of the limiting rod 3118 is fitted with a return spring 3119 for driving the feed hopper 3104 to quickly return to its original position. The two ends of the return spring 3119 are respectively connected to the limiting rod 3104. Position rod 3118 and ear plate 3117 are fixedly connected. A rack 3120 is fixedly connected to the lower surface of ear plate 3117. A motor 3121 is fixedly connected to the outer wall of material cylinder 3101. A half gear 3122 for driving the rack 3120 to rise and fall is fixedly connected to the output end of motor 3121. The half gear 3122 meshes with rack 3120. A baffle 3105 for preventing stones from falling is fixedly connected to the upper surface of feed hopper 3104.When this device is used to test the adhesion of asphalt, first place the stones into the baffle 3105, then start the motor 3121 to drive the half-gear 3122 to rotate. When the half-gear 3122 is in mesh with the rack 3120, the half-gear 3122 will drive the rack 3120, causing the rack 3120 to drive the ear plate 3117. The ear plate 3117 will cause the height of the feed hopper 3104 to rise. Then, as the half-gear 3122 rotates, the meshing state between the half-gear 3122 and the rack 3120 will change to a non-meshing state. At this time, the return spring 3119 will drive the ear plate 3117, causing the ear plate 3117 to move rapidly downward along the arc surface of the limit rod 3118. The ear plate 3117 will drive the feed hopper 3104 downward until the lower end of the feed hopper 3104 is in contact with the upper end of the material cylinder 3101. Through the continuous operation of the motor 3121, the feed hopper 3104 can be moved downward. The semi-gear 3122 and rack 3120 continuously switch between meshing and non-meshing states, thereby controlling the vibration of the feed hopper 3104. This allows the lower screen plate 3107 to screen the stones, enabling them to pass through the screen holes and enter the space formed by the material cylinder 3101 and the dome 3103. The material cylinder 3101 is then placed into the oven 6 containing a measured amount of asphalt, coating the stones with asphalt material. The material collection component 31 is then removed from the oven 6, and the asphalt-coated stones are cooled. Water is added to the centrifuge 7 while the stones are cooling. After the stones have cooled, they are weighed. The material collection component 31 is then used to transfer the asphalt-coated stones into the centrifuge 7 containing water. The centrifuge 7 is then started to separate the stones from the asphalt. After the centrifuge 7 has run, the material collection component 31 is removed from the centrifuge 7. After drying, the mass of the stones coated after centrifugation is measured. Finally, the mass difference is used to evaluate the asphalt adhesion strength.

[0049] The transfer assembly 32 includes a support frame 3201. One side of the support frame 3201 is fixedly connected to the upper surface of the workbench 1. The cross-section of the support frame 3201 is U-shaped. Two drive wheels 3202 are rotatably connected to one side of the support frame 3201. The arc surfaces of the two drive wheels 3202 are connected to a belt 3203 for controlling the lateral movement of the material-collecting assembly 31. A servo motor 3204 for driving the drive wheels 3202 is fixedly connected to the side of the support frame 3201 away from the drive wheels 3202. The output end of the servo motor 3204 is fixedly connected to one end of one of the drive wheels 3202. An adjusting block 3205 is fixedly connected to the lower surface of the outer wall of the belt 3203. The lower surface of the adjusting block 3205 is fixedly... A cylinder 3206 is connected to drive the longitudinal movement of the material-carrying assembly 31. The output end of the cylinder 3206 is fixedly connected to a weighing scale 3207. A hook 3208 is fixedly connected to the lower surface of the weighing scale 3207. A lifting ring 3209 abuts against the inner wall of the hook 3208. Several lifting ropes 3210 are fixedly connected to the outer wall of the lifting ring 3209. The lifting ropes 3210 are fixedly connected to the upper surface of the baffle 3105. A guide rod 3211 is slidably passed through the side of the adjusting block 3205 to guide the movement of the adjusting block 3205. Both ends of the guide rod 3211 are fixedly connected to a limiting plate 3212 to support the guide rod 3211. The upper surface of the limiting plate 3212 is fixedly connected to the support frame 3201. When the transfer component 32 is needed to transfer the material-carrying component 31, the servo motor 3204 is first started to drive one of the transmission wheels 3202 to rotate, thereby causing the belt 3203 to run within the limits of the two transmission wheels 3202. During the movement of the belt 3203, it will drive the adjusting block 3205, causing the adjusting block 3205 to move under the guidance of the guide rod 3211. The adjusting block 3205 drives the cylinder 3206, hook 3208 and lifting ring 3209 to move laterally. 9 drives the material-collecting assembly 31 to move laterally, thereby adjusting the lateral position of the material-collecting assembly 31. When it is necessary to adjust the longitudinal position of the material-collecting assembly 31, the cylinder 3206 is activated to drive the hook 3208 to rise and fall. The hook 3208 drives the lifting ring 3209, the lifting rope 3210 and the material-collecting assembly 31 to rise and fall, thereby adjusting the longitudinal position of the material-collecting assembly 31. The hanging scale 3207 can weigh the weight of the stones wrapped with asphalt in the material-collecting assembly 31.

[0050] An upper screen plate 3108 is attached to the upper surface of the lower screen plate 3107. The screen holes of the upper screen plate 3108 are the same size as those of the lower screen plate 3107. A motor base 3109 is fixedly connected to the outer wall of the feed hopper 3104 to provide support. A drive motor 3110 is fixedly connected to the inner wall of the motor base 3109. A lead screw 3111 is fixedly connected to the output end of the drive motor 3110. The arc surface of the lead screw 3111 is threadedly connected to a connecting plate 3112 for moving the upper screen plate 3108. The lower surface of the connecting plate 3112 is fixedly connected to the upper surface of the upper screen plate 3108. A positioning plate 3113 is fixedly connected to the upper surface of the connecting plate 3112. A positioning rod 3114 is slidably inserted on the side of the positioning plate 3113 to prevent the connecting plate 3112 from rotating and shifting during movement. One end of the positioning rod 3114 is fixedly connected to the outer wall of the motor base 3109. When the size of the sieve openings needs to be adjusted to screen stones of different sizes, the drive motor 3110 is started to drive the lead screw 3111 to rotate. The lead screw 3111 drives the connecting plate 3112 to move along its arc surface. During the movement of the connecting plate 3112, the positioning plate 3113 fixed on the connecting plate 3112 moves along the arc surface of the positioning rod 3114, thereby preventing the connecting plate 3112 from rotating or shifting during its movement. Simultaneously, the movement of the connecting plate 3112 drives the upper sieve plate 3108 to move. As the upper sieve plate 3108 moves, the sieve openings of the upper sieve plate 3108... The size of the hole formed by the hole and the sieve hole of the lower sieve plate 3107 will change. When the hole is adjusted to a suitable size, the operation of the drive motor 3110 can be stopped. By setting the above structure, the size of the hole formed by the sieve hole of the upper sieve plate 3108 and the sieve hole of the lower sieve plate 3107 can be automatically adjusted, so that the device can screen stones of different sizes. Then, stones of different sizes can be selected for asphalt adhesion testing. The test results of stones of a single size may be limited. Multi-size testing provides more data points and can enhance the statistical significance and reliability of adhesion test results.

[0051] A scale 3115 is provided on the upper surface of the sealing plate 3106, and a pointer 3116 is fixedly connected to the upper surface of the upper sieve plate 3108. By setting the scale 3115 and the pointer 3116, the size of the holes formed by the sieve holes of the upper sieve plate 3108 and the sieve holes of the lower sieve plate 3107 can be precisely adjusted.

[0052] The half gear 3122 has a toothed hole 3123 on the side away from the motor 3121. The outer wall of the material cylinder 3101 is fixedly connected to a support plate 3124 that provides support. An electric push rod 3125 is fixedly connected to one side of the support plate 3124. The output end of the electric push rod 3125 is fixedly connected to a tooth block 3126 for locking the half gear 3122. The size of the tooth block 3126 is matched with that of the toothed hole 3123. When it is necessary to lock the half gear 3122, first activate the electric actuator 3125 to drive the tooth block 3126, causing the tooth block 3126 to move closer to the tooth hole 3123. Once the tooth block 3126 is inserted into the tooth hole 3123, the locking of the half gear 3122 is completed. By setting the above structure, when the half gear 3122 rotates and drives the feed hopper 3104 to move to a suitable position, the tooth block 3126 can be automatically driven to lock the half gear 3122, thereby improving the stability of the feed hopper 3104 after it moves to a suitable position.

[0053] A protective cover 3127 is fixedly connected to the outer wall of the material cylinder 3101. The motor 3121, the half-gear 3122, the electric push rod 3125, and the tooth block 3126 are located inside the protective cover 3127. By setting the protective cover 3127, the motor 3121, the half-gear 3122, the electric push rod 3125, and the tooth block 3126 can be covered and protected, thereby improving the service life of these parts and improving the smooth operation of the upper screen plate 3108.

[0054] The regulating device 3 also includes a water tank 33 for storing water. One side of the water tank 33 is fixedly connected to one side of the workbench 1. A delivery pump is installed inside the water tank 33. A water inlet pipe 34 and a corrugated pipe 35 are fixedly connected to the upper surface of the water tank 33. The end of the corrugated pipe 35 away from the water tank 33 is fixedly connected to a nozzle 36 for spraying water into the centrifuge 7. When water needs to be added to the centrifuge 7, the operator can move the nozzle 36 to aim it at the inside of the centrifuge 7, and then start the delivery pump inside the water tank 33 to spray water into the centrifuge 7 along the corrugated pipe 35 and the nozzle 36. When the water in the water tank 33 is low, the operator can add water to the water tank 33 through the water inlet pipe 34. By setting up the above structure, the operator can easily and conveniently perform the water adding step, improving the ease of use of the asphalt adhesion testing device.

[0055] Reference Figure 11As shown, in this embodiment: the discharge device 4 includes a hydraulic cylinder 401, which is fixed on the upper surface of the workbench 1. The output end of the hydraulic cylinder 401 is fixedly connected to a rotating seat 402. The inner wall of the rotating seat 402 is rotatably connected to a connecting plate 403 for moving and rotating the oven 6 and the centrifuge 7. The upper surface of the connecting plate 403 is fixedly connected to the lower surface of the oven 6 and the centrifuge 7. The upper surface of the connecting plate 403 is fixedly connected to a sludge collection box 404 for receiving water and asphalt flowing out of the material cylinder 3101. A collection box 406 for storing waste materials inside the oven 6, the sludge collection box 404 and the centrifuge 7 is fixedly connected to one side of the workbench 1. An outlet pipe 407 is fixedly connected to one side of the outer wall of the collection box 406. A sealing plug 408 for sealing the outlet pipe 407 is fixedly connected to the inner wall of the outlet pipe 407. When the asphalt adhesion test is completed and the waste from the oven 6, the sludge collection box 404, and the centrifuge 7 needs to be poured into the collection box 406, first start the hydraulic cylinder 401 to drive the rotating seat 402. The rotating seat 402 then moves the connecting plate 403 closer to the collection box 406. The connecting plate 403 drives the oven 6, centrifuge 7, and sludge collection box 404. After the hydraulic cylinder 401 moves the rotating seat 402 above the workbench 1, the connecting plate 403 will rotate along the inner wall of the rotating seat 402 under its own gravity. At this time, the connecting plate 403 will drive the oven 6... The sludge collection box 404 and the centrifuge 7 rotate synchronously, so that the oven 6, the sludge collection box 404 and the centrifuge 7 can automatically tilt, thus pouring the waste inside the oven 6, the sludge collection box 404 and the centrifuge 7 into the collection box 406. After the tilting is completed, the hydraulic cylinder 401 is activated to drive the rotating seat 402 to move in the opposite direction, so that the rotating seat 402 and the connecting plate 403 are reset. After the reset, the operation of the hydraulic cylinder 401 can be stopped, thus completing the waste discharge operation. When the collection box 406 is full, the sealing plug 408 can be opened to allow the waste to be discharged through the outlet pipe 407.

[0056] The upper surface of the worktable 1 is fixedly connected with several baffles 405, which enable the rotating seat 402 to move quickly to a designated position. One side of the baffle 405 is in contact with the rotating seat 402. By setting the rotating seat 402, when the hydraulic cylinder 401 drives the rotating seat 402 to contact one side of the baffle 405, the operation of the hydraulic cylinder 401 can be stopped, thereby enabling the rotating seat 402 to move quickly to the designated position.

[0057] Detailed Instructions for Use: When using this device to test the adhesion of asphalt, first place the stones into the baffle 3105, then start the motor 3121 to drive the half-gear 3122 to rotate. When the half-gear 3122 is engaged with the rack 3120, the half-gear 3122 will drive the rack 3120, causing the rack 3120 to drive the ear plate 3117. The ear plate 3117 will raise the height of the feed hopper 3104, and then... As the half-gear 3122 rotates, the meshing state between the half-gear 3122 and the rack 3120 changes to a non-meshing state. At this time, the return spring 3119 drives the ear plate 3117, causing the ear plate 3117 to move rapidly downward along the arc surface of the limit rod 3118. The ear plate 3117 drives the feed hopper 3104 to move downward until the lower end of the feed hopper 3104 is in contact with the upper end of the material cylinder 3101. Through the continuous operation of the motor 3121... This allows the semi-gear 3122 and rack 3120 to continuously switch between meshing and non-meshing states, thereby controlling the vibration of the feed hopper 3104. This enables the lower screen plate 3107 to screen the stones, allowing them to pass through the screen holes and enter the space formed by the material cylinder 3101 and the circular cover 3103. The material cylinder 3101 is then placed into the oven 6 containing a quantitative amount of asphalt, so that the stones are coated with asphalt material. The material collection component 31 is then removed from the oven 6, and the asphalt-coated stones are cooled. Water is added to the centrifuge 7 while the stones are cooling. After the stones have cooled, they are weighed. The material collection component 31 is then used to transfer the asphalt-coated stones into the centrifuge 7 containing water. The centrifuge 7 is then started to separate the stones from the asphalt. After the centrifuge 7 has run, the material collection component 31 is removed from the centrifuge 7. After drying, the mass of the stones coated after centrifugation is measured. Finally, the mass difference is used to evaluate the asphalt adhesion strength.

[0058] When the asphalt adhesion test is completed and the waste from the oven 6, sludge collection box 404, and centrifuge 7 needs to be poured into the collection box 406, first start the hydraulic cylinder 401 to drive the rotating seat 402, causing the rotating seat 402 to move the connecting plate 403 closer to the collection box 406. The connecting plate 403 then drives the oven 6, centrifuge 7, and sludge collection box 404. After the hydraulic cylinder 401 moves the rotating seat 402 above the workbench 1, the connecting plate 403 will rotate along the inner wall of the rotating seat 402 under its own gravity. At this time, the connecting plate 403 will drive the oven 6, sludge collection box 404, and centrifuge 7 to rotate synchronously, thereby enabling the oven 6, sludge collection box 404, and centrifuge 7 to rotate. The machine automatically tilts the waste material from the oven 6, the sludge collection box 404, and the centrifuge 7 into the collection box 406. After tilting, the cylinder 401 is activated to move the rotating seat 402 in the opposite direction, resetting the rotating seat 402 and the connecting plate 403. After resetting, the cylinder 401 stops operating, thus completing the waste discharge operation. When the collection box 406 is full, the sealing plug 408 can be opened to allow the waste to be discharged through the outlet pipe 407. By setting the rotating seat 402, when the cylinder 401 moves the rotating seat 402 to fit against one side of the baffle 405, the cylinder 401 stops operating, allowing the rotating seat 402 to quickly move to the designated position.

[0059] A method for detecting the adhesiveness of asphalt by immersion and centrifugation includes the following steps:

[0060] S1. First, the stones are screened so that the screened stones enter the material cylinder 3101. Then, the material cylinder 3101 is driven into the oven 6 containing a quantitative amount of asphalt using the transfer component 32, so that the stones are coated with asphalt material.

[0061] S2, using the transfer component 32 to drive the material cylinder 3101 to cool the asphalt-coated stones, and then weighing the asphalt-coated stones after cooling.

[0062] S3, using the transfer component 32, the stones coated with asphalt are placed into the centrifuge 7 containing water, and the centrifuge 7 is started to separate the stones from the asphalt.

[0063] S4. After the centrifuge 7 is running, the material collection component 31 is taken out from inside the centrifuge 7, dried, and the mass of the stones wrapped after centrifugation is measured. Finally, the mass difference is used to evaluate the adhesion strength of the asphalt.

Claims

1. A device for testing the adhesion of bitumen to aggregates by immersion in water and centrifugation, comprising a worktable (1), an oven (6) for drying the bitumen adhering to the surface of the aggregates, a centrifuge (7) for separating the aggregates from the bitumen, a regulating device (3) and a discharge device (4), characterized in that: The lower surface of the workbench (1) is fixedly connected with a plurality of support columns (2) which play a supporting role, one side of the workbench (1) is provided with an electric control box (5), the inside of the electric control box (5) is provided with a central processing system, the oven (6) and the centrifuge (7) are arranged above the workbench (1) by means of the discharging device (4), the discharging device (4) is located on the upper surface of the workbench (1), the adjusting device (3) is located on the upper surface of the workbench (1), the adjusting device (3) comprises a material holding assembly (31) and a transfer assembly (32) for transferring the material holding assembly (31), the material holding assembly (31) comprises a material cylinder (3101) for placing stones and asphalt, the size of the material cylinder (3101) is matched with the size of the inside of the oven (6) and the centrifuge (7), a plurality of round holes (3102) are formed in the outer wall and the lower surface of the material cylinder (3101), a round cover (3103) is fixedly connected to the inner wall bottom of the material cylinder (3101) to avoid the bottom of the material cylinder (3101) from colliding with the elements in the center of the inside of the centrifuge (7), a feeding hopper (3104) is attached to the upper end of the material cylinder (3101) to add asphalt and stones into the material cylinder (3101), a sealing plate (3106) is fixedly connected to the inner wall of the feeding hopper (3104), a lower sieve plate (3107) is fixedly connected to the upper surface of the sealing plate (3106) to sieve stones, the sieve holes of the lower sieve plate (3107) are communicated with the feeding hopper (3104) and the material cylinder (3101), an ear plate (3117) is fixedly connected to the outer wall of the feeding hopper (3104) to play a supporting role, a limiting rod (3118) is slidably arranged on the surface of the ear plate (3117) to guide the lifting process of the feeding hopper (3104), one end of the short arm of the limiting rod (3118) is fixedly connected with the outer wall of the material cylinder (3101), the long arm end of the limiting rod (3118) is sleeved with a reset spring (3119) to drive the feeding hopper (3104) to quickly reset, the two ends of the reset spring (3119) are fixedly connected with the limiting rod (3118) and the ear plate (3117) respectively, a rack (3120) is fixedly connected to the lower surface of the ear plate (3117), a motor (3121) is fixedly connected to the outer wall of the material cylinder (3101), the output end of the motor (3121) is fixedly connected with a half-tooth gear (3122) to drive the rack (3120) to lift, the half-tooth gear (3122) is engaged with the rack (3120), and the upper surface of the feeding hopper (3104) is fixedly communicated with a material blocking cover (3105) to prevent stones from falling.

2. A water immersion centrifuge separation device for testing the adhesion of bitumen according to claim 1, characterized in that: The transport assembly (32) includes a support frame (3201), one side of the support frame (3201) is fixedly connected with the upper surface of the workbench (1), the cross section of the support frame (3201) is "U" shape, one side of the support frame (3201) is rotatably connected with two transmission wheels (3202), the arc surfaces of the two transmission wheels (3202) are transmissionally connected with a belt (3203) for controlling the transverse movement of the material pocket assembly (31), one side of the support frame (3201) away from the transmission wheel (3202) is fixedly connected with a servo motor (3204) for driving the transmission wheel (3202) to rotate, the output end of the servo motor (3204) is fixedly connected with one end of the transmission wheel (3202), the lower surface of the outer wall of the belt (3203) is fixedly connected with an adjusting block (3205), the lower surface of the adjusting block (3205) is fixedly connected with an air cylinder (3206) for driving the longitudinal movement of the material pocket assembly (31), the output end of the air cylinder (3206) is fixedly connected with a hanging scale (3207) for weighing, the lower surface of the hanging scale (3207) is fixedly connected with a hook (3208), the inner wall of the hook (3208) abuts against a lifting ring (3209), the outer wall of the lifting ring (3209) is fixedly connected with a plurality of lifting ropes (3210), the lifting ropes (3210) are fixedly connected with the upper surface of the material blocking cover (3105), the side surface of the adjusting block (3205) is slidably provided with a guide rod (3211) for guiding the movement of the adjusting block (3205), the two ends of the guide rod (3211) are fixedly connected with limiting plates (3212) for supporting the guide rod (3211), the upper surface of the limiting plate (3212) is fixedly connected with the support frame (3201).

3. A water immersion centrifuge separation device for testing the adhesion of bitumen according to claim 2, characterized in that: The upper surface of the lower sieve plate (3107) is attached with an upper sieve plate (3108), the sieve holes of the upper sieve plate (3108) are the same size as the sieve holes of the lower sieve plate (3107), the outer wall of the feed hopper (3104) is fixedly connected with a motor base (3109) for supporting, the inner wall of the motor base (3109) is fixedly connected with a drive motor (3110), the output end of the drive motor (3110) is fixedly connected with a lead screw (3111), the arc surface of the lead screw (3111) is threadedly connected with a connecting plate (3112) for driving the movement of the upper sieve plate (3108), the lower surface of the connecting plate (3112) is fixedly connected with the upper surface of the upper sieve plate (3108), the upper surface of the connecting plate (3112) is fixedly connected with a positioning plate (3113), the side surface of the positioning plate (3113) is slidably provided with a positioning rod (3114) for avoiding the rotational deviation of the connecting plate (3112) during movement, one end of the positioning rod (3114) is fixedly connected with the outer wall of the motor base (3109).

4. A water immersion centrifuge for testing the adhesion of bitumen according to claim 3, characterized in that: The upper surface of the sealing plate (3106) is provided with a scale table (3115), and the upper surface of the upper sieve plate (3108) is fixedly connected with a pointer (3116).

5. A water immersion centrifuge for testing the adhesion of bitumen according to claim 4, characterized in that: The half-tooth gear (3122) is provided with a gear hole (3123) on the side away from the motor (3121), the outer wall of the barrel (3101) is fixedly connected with a support plate (3124) for support, one side of the support plate (3124) is fixedly connected with an electric push rod (3125), the output end of the electric push rod (3125) is fixedly connected with a tooth block (3126) for locking the half-tooth gear (3122), and the tooth block (3126) is matched with the size of the gear hole (3123).

6. A water immersion centrifuge for testing the adhesion of bitumen according to claim 5, characterized in that: The outer wall of the barrel (3101) is fixedly connected with a protective cover (3127), and the motor (3121), the half-tooth gear (3122), the electric push rod (3125) and the tooth block (3126) are located in the interior of the protective cover (3127).

7. A water immersion centrifuge separation apparatus for testing the adhesion of bitumen according to claim 6, characterized in that: The adjusting device (3) further comprises a water tank (33) for storing water, one side of the water tank (33) is fixedly connected with one side of the workbench (1), a conveying pump is installed in the interior of the water tank (33), the upper surface of the water tank (33) is fixedly connected with a water inlet pipe (34) and a corrugated pipe (35), one end of the corrugated pipe (35) away from the water tank (33) is fixedly connected with a spray head (36) for spraying water into the centrifuge (7).

8. A water immersion centrifuge for testing the adhesion of bitumen according to claim 7, characterized in that: The discharging device (4) comprises an oil cylinder (401), the oil cylinder (401) is fixed on the upper surface of the workbench (1), the output end of the oil cylinder (401) is fixedly connected with a rotating seat (402), the inner wall of the rotating seat (402) is rotatably connected with a linking plate (403) for driving the oven (6) and the centrifuge (7) to move and overturn, the upper surface of the linking plate (403) is fixedly connected with the lower surfaces of the oven (6) and the centrifuge (7), the upper surface of the linking plate (403) is fixedly connected with a pollution collection box (404) for collecting water and asphalt flowing out of the barrel (3101), one side of the workbench (1) is fixedly connected with a collection box (406) for storing waste materials in the oven (6), the pollution collection box (404) and the centrifuge (7), one side of the outer wall of the collection box (406) is fixedly connected with a discharge pipe (407), and the inner wall of the discharge pipe (407) is fixedly connected with a sealing plug (408) for sealing the discharge pipe (407).

9. A water immersion centrifuge separation apparatus for testing the adhesion of bitumen according to claim 8, characterized in that: The upper surface of the workbench (1) is fixedly connected with a plurality of baffles (405) for enabling the rotating seat (402) to quickly move to a specified position, and one side of the baffle (405) is attached to the rotating seat (402).

10. A method for measuring the adhesion of bitumen using a device for measuring the adhesion of bitumen by immersion centrifugation according to any one of claims 1 to 9, characterized in that The method comprises the following steps: S1, first screening the stones, making the screened stones enter the barrel (3101), and then using the transfer assembly (32) to drive the barrel (3101) to enter the oven (6) filled with a certain amount of asphalt, so that the stones are wrapped with asphalt material; S2, using the transport assembly (32) to drive the barrel (3101), the asphalt-coated stone is cooled, and the asphalt-coated stone is weighed after cooling; S3, with the help of the transport assembly (32), the asphalt-coated stone is put into the centrifuge (7) containing water, and the centrifuge (7) is started to separate the stone and the asphalt; S4, after the centrifuge (7) is operated, the material holding assembly (31) is fished out from the inside of the centrifuge (7), dried after fishing out, the mass of the wrapped stone after centrifugation is measured, and finally the strength of the asphalt adhesion is evaluated by the mass difference.

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