High-precision asphalt performance detection device

Abstract

The invention discloses an asphalt performance high-precision detection device, and relates to the technical field of asphalt performance detection.The asphalt performance high-precision detection device comprises a fixed base, a detector body is fixedly connected to the top of the fixed base, a control frame is fixedly connected to the rear side of the detector body, a movable frame is slidably connected to the control frame, and a hemispherical round head is fixedly connected to the bottom of the movable frame; the device further comprises a multi-stage linkage blending control mechanism and a directional spray-washing rotary purification mechanism, through cooperation between the multi-stage linkage blending control mechanism and the directional spray-washing rotary purification mechanism, before the viscosity and toughness of asphalt are tested, cleaning liquid is soaked on degreasing cotton, and the viscosity and toughness of the asphalt are tested through rotation of the rotary base. And the degreasing cotton soaked with the cleaning solution does circular motion around the hemispherical round head to clean the surface of the hemispherical round head, so that the condition that residual oil stain, dust or old asphalt appears on the surface of the hemispherical round head is avoided, and the detection precision is improved.

Description

Technical Field

[0001] This invention relates to the field of asphalt performance testing technology, specifically to a high-precision asphalt performance testing device. Background Technology

[0002] In the existing technology, the asphalt viscosity-toughness tester is a professional testing device used to determine the viscosity-toughness properties of asphalt materials under specific conditions. This instrument evaluates the effect of modifiers or material properties by constantly stretching asphalt samples and recording the stress-deformation data. It is widely used in road engineering, scientific research and testing and other fields.

[0003] In the process of testing the viscosity and toughness of asphalt, the hemispherical head on the instrument often needs to be immersed in the asphalt sample. If there is residual oil, dust or old asphalt on its surface, it will change the actual contact area and adhesion strength between the asphalt and the head, resulting in distortion of the test load deformation curve and deviation of the calculated viscosity and toughness from the true value. Traditional cleaning methods often rely on manual wiping of the hemispherical head with cotton cloth, brush or solvent, which requires repeated dipping in cleaning solution and manual rotation and wiping. This not only makes it difficult to achieve continuous and high-speed cleaning action, resulting in a longer testing cycle, but also the difference in the control of wiping force and cleaning solution by different operators can easily lead to fluctuations in cleaning effect and affect the repeatability of test data.

[0004] Therefore, in view of this, the present invention proposes a high-precision testing device for asphalt performance to make up for and improve the shortcomings of the prior art. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a high-precision testing device for asphalt performance, thereby resolving the corresponding technical issues raised in the background section.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a high-precision asphalt performance testing device, including a fixed base, a testing instrument body fixedly connected to the top of the fixed base, a control frame fixedly connected to the rear side of the testing instrument body, a movable frame slidably connected to the control frame, a hemispherical head fixedly connected to the bottom of the movable frame, and further including: a multi-level linkage adjustment and control mechanism and a directional spraying and rotating purification mechanism, both of which are located on the rear side of the control frame, with the multi-level linkage adjustment and control mechanism located above the directional spraying and rotating purification mechanism; The multi-level linkage and control mechanism includes a first fixed plate, a toothed plate, a first spiral block, a first spiral sleeve, a movable sleeve, and a second spiral block. The first fixed plate is fixedly connected to the rear side of the control frame. The first spiral block is disposed below the first fixed plate. The toothed plate is disposed between the first spiral block and the control frame. The first spiral sleeve is disposed below the first spiral block. The movable sleeve is movably sleeved on the outer surface of the first spiral sleeve. The second spiral block is disposed below the movable sleeve. The directional spraying and rotating purification mechanism includes a gear, a rotating base plate, a rotating base, a spray pipe, and a second spiral sleeve. The rotating base plate is located below the hemispherical head, the gear is located at one end of the rotating base plate facing the control frame, the rotating base is located between the hemispherical head and the rotating base plate, the spray pipe is fixedly installed on the rotating base in an annular shape with equal intervals, and the second spiral sleeve is located below the second spiral block.

[0007] Preferably, the multi-level linkage control mechanism further includes a cylinder fixedly connected to the top of the first fixed plate. A push plate is fixedly connected to the output end of the cylinder. The end of the push plate facing the control frame is fixedly connected to the toothed plate. A first connecting rod is fixedly connected to the bottom of the end of the push plate away from the control frame. The bottom of the first connecting rod is fixedly connected to the first spiral block.

[0008] Preferably, the bottom of the first fixed plate away from the control frame is symmetrically fixedly connected to an mounting plate, and the mounting plate is slidably connected to the push plate. A connecting frame is fixedly connected between the lower ends of the mounting plates. The connecting frame is rotatably connected to the outer surface of the upper end of the first spiral sleeve. A reciprocating groove is opened on the outer surface of the first spiral sleeve. A movable convex ball is fixedly connected to the inner surface of the movable sleeve plate, and the movable convex ball is slidably connected in the reciprocating groove.

[0009] Preferably, the mounting plate has a groove at the lower end of the opposite side, and sliders are symmetrically fixedly connected to the outer surface of the movable sleeve, and the sliders are slidably connected in the groove. A first return spring is fixedly connected between the slider and the bottom wall of the groove. A second connecting rod is fixedly connected to the bottom of the movable sleeve away from the first spiral sleeve, and the bottom of the second connecting rod is fixedly connected to the second spiral block.

[0010] Preferably, the directional spraying and rotating purification mechanism further includes a second fixed plate symmetrically fixedly connected to the rear side of the control frame, and the second fixed plate is disposed below the first fixed plate. A torsion spring shaft is rotatably connected between the second fixed plates. The gear and the rotating base plate are both fixedly connected to the outer surface of the torsion spring shaft. The rotating base is rotatably connected to the top of the rotating base plate at the end away from the control frame. The second spiral sleeve is rotatably connected to the top of the rotating base plate.

[0011] Preferably, a transmission wheel is fixedly connected to the lower outer surface of the second spiral sleeve, and a belt is connected between the transmission wheel and the rotating base. A support plate is symmetrically fixedly connected to the end of the rotating base away from the control frame. A fixing column is fixedly connected to the top of the support plate, and an ear plate is fixedly connected to the top of the fixing column. An annular plate is fixedly connected between the tops of the ear plates, and spherical top blocks are fixedly connected in an annular shape at equal intervals on the inner surface of the annular plate.

[0012] Preferably, the rotating base has an internal cavity, and a liquid storage cylinder is fixedly connected to the lower end of the cavity. An inlet pipe is fixedly connected to the liquid storage cylinder, and the inlet pipe is fixedly connected to the rotating base through it. A screw cap is rotatably connected to the end of the inlet pipe away from the liquid storage cylinder.

[0013] Preferably, the liquid storage cylinder is fixedly connected to a conveying pipe in a ring at equal intervals, the upper end of the receiving cavity is provided with a fixing ring, and the fixing ring is fixedly connected to the spray pipe through it. The end of the spray pipe away from the fixing ring is evenly provided with spray holes.

[0014] Preferably, the fixed ring has piston cylinders fixedly connected to it in an annular shape at equal intervals, and the piston cylinders are fixedly connected to the adjacent nozzles. The end of the delivery pipe away from the liquid storage cylinder is fixedly connected to the fixed ring, and the delivery pipe is fixedly connected between the piston cylinder and the nozzle. The end of the piston cylinder away from the nozzle is slidably connected to a piston rod, and the end of the piston rod away from the piston cylinder is fixedly connected to a spherical push block, and the spherical push block is in contact with a spherical top block. A second return spring is fixedly connected between the spherical push block and the piston cylinder.

[0015] Preferably, an elastic telescopic column is provided between the rotating base plate and the control frame, and the end of the elastic telescopic column away from the rotating base plate is fixedly connected to the control frame, while the end of the elastic telescopic column away from the control frame is slidably connected to the rotating base plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are: (1) Through the coordinated operation of the multi-level linkage control mechanism and the directional spraying and rotating purification mechanism, the cleaning liquid can be soaked into the degreased cotton before testing the viscosity and toughness of asphalt. By rotating the base, the degreased cotton soaked in cleaning liquid can make a circular motion around the hemispherical head to clean the surface of the hemispherical head, avoiding the presence of residual oil, dust or old asphalt on the surface of the hemispherical head, thereby improving the accuracy of the test. Unlike the existing manual cleaning method, it not only eliminates the need for manual cleaning, reduces the cleaning time and shortens the test cycle, but also avoids the situation where the cleaning effect fluctuates due to the difference in the control of wiping force and cleaning liquid by different operators.

[0017] (2) By setting up a multi-level linkage control mechanism, and utilizing the design of the first fixed plate, toothed plate, first spiral block, first spiral sleeve, moving sleeve plate and second spiral block, the linear motion of the first spiral block can be converted into the rotational motion of the first spiral sleeve through the spiral groove opened on the outer surface of the first spiral sleeve. With the design of the moving convex ball and reciprocating groove, the second spiral block can be moved back and forth in the vertical direction, realizing the precise control of power transmission, the efficient integration of compact structure, and the stable and reliable motion conversion, so as to provide a driving basis for the subsequent rotational motion of the rotating base.

[0018] (3) By setting up a directional spraying and rotating purification mechanism, using the design of gears, rotating base plate, rotating base, spray pipe and second spiral sleeve, in the process of the second spiral block moving to drive the second spiral sleeve to rotate, in conjunction with the design of spherical top block and spherical push block, the cleaning liquid stored between the piston cylinder and the delivery pipe can be pushed towards the spray pipe and sprayed out through the spray hole, so that the cleaning liquid is accurately and quantitatively sprayed onto the working degreased cotton, so that it always maintains the best moisture, which not only avoids the waste of cleaning liquid, but also ensures the best dissolution and cleaning effect. This "wet wiping" method is far more effective than simple "dry wiping" or "spray first and then wipe", which can immediately dissolve and wipe away the adhering asphalt, prevent the residue from drying out, and ensure that the cleanliness of the hemispherical head is consistent before each test, thereby ensuring the accuracy of the test data; The delivery pipe, piston cylinder, and nozzle all pass through the fixed ring and intersect within the fixed ring. The three components are fixed and connected to each other, forming a "J"-shaped structure that constitutes a fixed pump unit, effectively reducing the flow resistance and pressure loss of the fluid (cleaning liquid). Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the present invention; Figure 2 This is a schematic diagram of the control frame connection structure shown in the present invention; Figure 3 This is a schematic diagram of the connection structure of the mobile frame shown in this invention; Figure 4 This is a schematic diagram of the rotating base plate connection structure shown in the present invention; Figure 5 As shown in this invention Figure 4 Enlarged structural diagram at point A in the middle; Figure 6 This is a schematic diagram of the rotating base connection structure shown in the present invention; Figure 7 This is a schematic diagram of the structure of the first fixing plate connection point shown in the present invention; Figure 8 As shown in this invention Figure 7 Enlarged structural diagram at point B.

[0020] The numbers on the map are: 1. Fixed base; 2. Control frame; 3. Movable frame; 4. Hemispherical head; 5. Multi-stage linkage control mechanism; 501. First fixed plate; 502. Cylinder; 503. Push plate; 504. Toothed plate; 505. First connecting rod; 506. First spiral block; 507. Mounting plate; 508. First spiral sleeve; 509. Reciprocating groove; 510. Connecting frame; 511. Moving sleeve; 512. Slider; 513. Slide groove; 514. First return spring; 515. Second connecting rod; 516. Second spiral block; 6. Directional spraying and rotary purification mechanism; 601. Second fixed plate; 602. Torsion spring shaft; 603. Gear; 604. Rotating base plate; 605. Rotating base; 606. Receiving cavity; 607. Liquid storage cylinder; 608. Inlet pipe; 609. Screw cap; 610. Conveying pipe; 611. Fixed ring; 612. Spray pipe; 613. Spray hole; 614. Piston cylinder; 615. Piston rod; 616. Second return spring; 617. Spherical push block; 618. Annular plate; 619. Spherical top block; 620. Ear plate; 621. Fixed column; 622. Support plate; 623. Second spiral sleeve; 624. Transmission wheel; 625. Belt; 626. Elastic telescopic column; 7. The detector itself. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Embodiment 1 of the present invention: Please refer to Figures 1 to 8 As shown, a high-precision asphalt performance testing device includes a fixed base 1, a testing instrument body 7 fixedly connected to the top of the fixed base 1, a control frame 2 fixedly connected to the rear side of the testing instrument body 7, a movable frame 3 slidably connected to the control frame 2, and a hemispherical head 4 fixedly connected to the bottom of the movable frame 3. It also includes a multi-level linkage adjustment and control mechanism 5 and a directional spraying and rotating purification mechanism 6. Both the multi-level linkage adjustment and control mechanism 5 and the directional spraying and rotating purification mechanism 6 are located on the rear side of the control frame 2, and the multi-level linkage adjustment and control mechanism 5 is located above the directional spraying and rotating purification mechanism 6. The multi-level linkage control mechanism 5 includes a first fixed plate 501, a toothed plate 504, a first spiral block 506, a first spiral sleeve 508, a movable sleeve 511, and a second spiral block 516. The first fixed plate 501 is fixedly connected to the rear side of the control frame 2. The first spiral block 506 is disposed below the first fixed plate 501. The toothed plate 504 is disposed between the first spiral block 506 and the control frame 2. The first spiral sleeve 508 is disposed below the first spiral block 506. The movable sleeve 511 is movably sleeved on the outer surface of the first spiral sleeve 508. The second spiral block 516 is disposed below the movable sleeve 511. The directional spraying and rotating purification mechanism 6 includes a gear 603, a rotating base plate 604, a rotating base 605, a spray nozzle 612, and a second spiral sleeve 623. The rotating base plate 604 is located below the hemispherical head 4. The gear 603 is located at one end of the rotating base plate 604 facing the control frame 2. The rotating base 605 is located between the hemispherical head 4 and the rotating base plate 604. The spray nozzle 612 is fixedly installed on the rotating base 605 in an annular shape with equal intervals. The second spiral sleeve 623 is located below the second spiral block 516. The multi-level linkage control mechanism 5 also includes a cylinder 502 fixedly connected to the top of the first fixed plate 501. A push plate 503 is fixedly connected to the output end of the cylinder 502. The end of the push plate 503 facing the control frame 2 is fixedly connected to the toothed plate 504. The bottom of the end of the push plate 503 away from the control frame 2 is fixedly connected to a first connecting rod 505. The bottom of the first connecting rod 505 is fixedly connected to the first spiral block 506. A mounting plate 507 is symmetrically fixedly connected to the bottom of the first fixed plate 501 away from the control frame 2, and the mounting plate 507 is slidably connected to the push plate 503. A connecting frame 510 is fixedly connected between the lower ends of the mounting plates 507. The connecting frame 510 is rotatably connected to the outer surface of the upper end of the first spiral sleeve 508. A reciprocating groove 509 is opened on the outer surface of the first spiral sleeve 508. A movable convex ball is fixedly connected to the inner surface of the movable sleeve plate 511, and the movable convex ball is slidably connected in the reciprocating groove 509. The mounting plate 507 has a groove 513 at the lower end of the opposite side. A slider 512 is symmetrically fixedly connected to the outer surface of the movable sleeve 511, and the slider 512 is slidably connected in the groove 513. A first return spring 514 is fixedly connected between the slider 512 and the bottom wall of the groove 513. A second connecting rod 515 is fixedly connected to the bottom of the end of the movable sleeve 511 away from the first spiral sleeve 508. The bottom of the second connecting rod 515 is fixedly connected to the second spiral block 516.

[0023] Please refer to Figure 3 , Figure 4 as well as Figure 7More preferably: a toothed plate 504 is disposed above the gear 603 and is used to drive the gear 603 to rotate; a first helical block 506 is disposed above the first helical sleeve 508 and is used to drive the first helical sleeve 508 to rotate; a movable sleeve plate 511 is slidably disposed on the outer surface of the first helical sleeve 508 through a movable convex ball and a reciprocating groove 509; when the first helical sleeve 508 rotates, it can drive the movable sleeve plate 511 to move up and down reciprocally; a second helical block 516 is disposed above the second helical sleeve 623 and is used to drive the second helical sleeve 623 to rotate.

[0024] The effects achieved by this embodiment are as follows: By setting up a multi-level linkage control mechanism 5, and utilizing the design of the first fixed plate 501, toothed plate 504, first spiral block 506, first spiral sleeve 508, movable sleeve plate 511, and second spiral block 516, the linear motion of the first spiral block 506 can be converted into the rotational motion of the first spiral sleeve 508 through the spiral groove opened on the outer surface of the first spiral sleeve 508. With the design of the movable convex ball and the reciprocating groove 509, the second spiral block 516 can move back and forth in the vertical direction, realizing precise and controllable power transmission, efficient integration of compact structure, and stable and reliable motion conversion, thereby providing a driving basis for the subsequent rotational motion of the rotating base 605.

[0025] Embodiment 2 of the present invention: Please refer to Figures 1 to 8 As shown, the directional spraying and rotating purification mechanism 6 also includes a second fixed plate 601 symmetrically fixedly connected to the rear side of the control frame 2, and the second fixed plate 601 is located below the first fixed plate 501. A torsion spring shaft 602 is rotatably connected between the second fixed plates 601. The gear 603 and the rotating base plate 604 are both fixedly connected to the outer surface of the torsion spring shaft 602. The rotating base 605 is rotatably connected to the top of the rotating base plate 604 at the end away from the control frame 2. The second spiral sleeve 623 is rotatably connected to the top of the rotating base plate 604. A transmission wheel 624 is fixedly connected to the outer surface of the lower end of the second spiral sleeve 623. A belt 625 is connected between the transmission wheel 624 and the rotating base 605. A support plate 622 is symmetrically fixedly connected to the end of the rotating base plate 604 away from the control frame 2. A fixed column 621 is fixedly connected to the top of the support plate 622. An ear plate 620 is fixedly connected to the top of the fixed column 621. An annular plate 618 is fixedly connected between the tops of the ear plates 620. Spherical top blocks 619 are fixedly connected in an annular shape at equal intervals on the inner surface of the annular plate 618. The rotating base 605 has a receiving cavity 606 inside. A liquid storage cylinder 607 is fixedly connected to the lower end of the receiving cavity 606. An inlet pipe 608 is fixedly connected to the liquid storage cylinder 607, and the inlet pipe 608 is fixedly connected to the rotating base 605 through it. A screw cap 609 is rotatably connected to the end of the inlet pipe 608 away from the liquid storage cylinder 607. The liquid storage cylinder 607 is fixedly connected to the conveying pipe 610 in a ring at equal intervals. The upper end of the receiving cavity 606 is provided with a fixing ring 611, and the fixing ring 611 is fixedly connected to the nozzle 612 through it. The nozzle 612 is provided with spray holes 613 evenly on one end away from the fixing ring 611. A piston cylinder 614 is fixedly connected to the fixed ring 611 in an annular shape at equal intervals, and the piston cylinder 614 is fixedly connected to the adjacent nozzle 612. The end of the delivery pipe 610 away from the liquid storage cylinder 607 is fixedly connected to the fixed ring 611, and the delivery pipe 610 is fixedly connected between the piston cylinder 614 and the nozzle 612. A one-way outlet valve is provided inside the nozzle 612. A one-way inlet valve is provided at the upper end of the piston cylinder 614. A piston rod 615 is slidably connected to the end of the piston cylinder 614 away from the nozzle 612. A spherical push block 617 is fixedly connected to the end of the piston rod 615 away from the piston cylinder 614, and the spherical push block 617 is in contact with the spherical top block 619. A second return spring 616 is fixedly connected between the spherical push block 617 and the piston cylinder 614. An elastic telescopic column 626 is provided between the rotating base plate 604 and the control frame 2. The end of the elastic telescopic column 626 away from the rotating base plate 604 is fixedly connected to the control frame 2, and the end of the elastic telescopic column 626 away from the control frame 2 is slidably connected to the rotating base plate 604.

[0026] Please refer to Figure 2 , Figure 3 , Figure 4 as well as Figure 6Even better: the reservoir 607 is filled with cleaning fluid for cleaning the surface of the hemispherical head 4. The inner surface of the rotating base 605 is detachably fitted with degreasing cotton that matches the shape of the outer surface of the hemispherical head 4, facilitating regular removal and replacement by staff. When in use (i.e., when the rotating base 605 is driven to rotate), the degreasing cotton and the rotating base 605 can be considered as a single integrated structure. The degreasing cotton rotates synchronously with the rotating base 605, and the outer surface of the degreasing cotton is in close contact with the inner surface of the rotating base 605, while the inner surface of the degreasing cotton adheres to and covers the hemispherical head 4. Initially, the hemispherical head 4 is fitted into the rotating base 605, while the degreased cotton is positioned between the two. During subsequent use, the cleaning solution is applied to the degreased cotton through the spray hole 613. As the rotating base 605 rotates, the degreased cotton, which is soaked in the cleaning solution, rotates synchronously with the rotating base 605. Since the position of the hemispherical head 4 is fixed, the degreased cotton can move relative to the hemispherical head 4 while rotating with the rotating base 605, and move in a circular motion around the hemispherical head 4 to wipe and clean its surface. In addition, please refer to Figure 4 , Figure 5 as well as Figure 6 The delivery pipe 610, piston cylinder 614, and nozzle 612 all pass through the fixing ring 611 and form a junction point within the fixing ring 611. They are mutually fixed and connected, forming a "J"-shaped structure. The lower end of the delivery pipe 610 is fixedly connected to the liquid storage cylinder 607. The nozzle 612 is fixedly mounted on the rotating base 605. The piston cylinder 614, away from the nozzle 612, is slidably connected to a piston rod 615. A one-way discharge valve is installed inside the nozzle 612. A one-way inlet valve is provided at the upper end of the piston cylinder 614. Initially, the piston cylinder 614 is filled with cleaning fluid. When the piston rod 615 squeezes into the piston cylinder 614, the cleaning fluid can be pushed towards the nozzle 612 through the one-way outlet valve and sprayed out through the nozzle 612. When the piston rod 615 moves in the opposite direction and is pulled out of the piston cylinder 614, the piston movement will draw the cleaning fluid from the reservoir 607 into the delivery pipe 610, and finally draw it into the piston cylinder 614 through the one-way inlet valve.

[0027] The effects achieved by this embodiment are as follows: By setting up the directional spraying and rotating purification mechanism 6, and utilizing the design of gear 603, rotating base plate 604, rotating base 605, spray pipe 612 and second spiral sleeve 623, during the process of the second spiral block 516 moving to drive the second spiral sleeve 623 to rotate, in conjunction with the design of spherical top block 619 and spherical push block 617, the cleaning liquid stored between piston cylinder 614 and conveying pipe 610 can be pushed towards the spray pipe 612 and sprayed out through spray hole 613, so that the cleaning liquid is accurately and quantitatively sprayed onto the working degreasing cotton, keeping it at the best moisture level. This avoids waste of cleaning liquid and ensures the best dissolution and cleaning effect. This "wet wiping" method is far more effective than simple "dry wiping" or "spray first and then wipe". It can immediately dissolve and wipe away the adhering asphalt, prevent the residue from drying out, and ensure that the cleanliness of the hemispherical head 4 is consistent before each test, thereby ensuring the accuracy of the test data. The delivery pipe 610, piston cylinder 614 and nozzle 612 all pass through the fixed ring 611 and form a junction point within the fixed ring 611. The three are fixed and connected to each other, forming a "J" shaped structure, which constitutes a fixed pump unit, effectively reducing the flow resistance and pressure loss of the fluid (cleaning liquid). Through the coordinated operation of the multi-level linkage control mechanism 5 and the directional spraying and rotating purification mechanism 6, the cleaning fluid can be soaked into the degreased cotton before testing the viscosity and toughness of asphalt. By rotating the base 605, the degreased cotton soaked in cleaning fluid moves in a circular motion around the hemispherical head 4 to clean the surface of the hemispherical head 4, avoiding residual oil, dust or old asphalt on the surface of the hemispherical head 4, thereby improving the accuracy of the test. Unlike the existing manual cleaning method, this method not only eliminates the need for manual cleaning, reducing cleaning time and shortening the test cycle, but also avoids the fluctuation of cleaning effect caused by different operators' differences in wiping force and control of cleaning fluid volume.

[0028] The complete usage steps and working principle of the above embodiments are as follows: In the initial state: the liquid storage cylinder 607 is filled with cleaning fluid for cleaning the surface of the hemispherical head 4. The inner surface of the rotating base 605 is detachably equipped with degreasing cotton that matches the shape of the outer surface of the hemispherical head 4, which makes it easy for staff to remove and replace the degreasing cotton regularly. When in use (i.e., when the rotating base 605 is driven to rotate), the degreasing cotton and the rotating base 605 can be regarded as an integral structure. The degreasing cotton will rotate synchronously with the rotation of the rotating base 605, and the outer surface of the degreasing cotton and the inner surface of the rotating base 605 are in close contact. The inner surface of the degreasing cotton is in close contact with the outer surface of the hemispherical head 4. Initially, the hemispherical head 4 is embedded in the rotating base 605, and the degreasing cotton is in between the two.

[0029] It should be noted in advance that, if Figure 2 As shown, the hemispherical head 4 is mounted on the movable frame 3, which is slidably connected to the control frame 2. By moving the movable frame 3 on the control frame 2, the hemispherical head 4 is controlled to test the viscosity and toughness of asphalt. It should also be noted that the specific process of testing the viscosity and toughness of asphalt described above is existing technology and will not be elaborated on here.

[0030] The following describes the working process of the multi-level linkage control mechanism 5 and the directional spraying and rotating purification mechanism 6 working together to clean the surface of the hemispherical head 4: Initially, there is a gap between the second spiral block 516 and the second spiral sleeve 623, and they are not in contact. Before the asphalt visco-toughness test, as... Figure 2 , Figure 3 as well as Figure 7 As shown, by starting the operation of cylinder 502, the push plate 503 connected to its output end can be driven to slide downward synchronously on the mounting plates 507 on both sides, in conjunction with the reference. Figure 8It is known that a first connecting rod 505 is fixedly installed at the bottom of the end of the push plate 503 facing the mounting plate 507, and a first spiral block 506 is fixedly installed at the bottom of the first connecting rod 505. When the push plate 503 slides downward, the first spiral block 506 can be driven to move downward synchronously through the connection of the first connecting rod 505. A connecting frame 510 is fixedly connected between the lower ends of the two mounting plates 507, and a first spiral sleeve 508 is rotatably connected through the middle of the connecting frame 510. The first spiral sleeve 508 is located directly below the first spiral block 506. Therefore, as the first spiral block 506 moves downward, the first spiral block 506 moves downward. The downward movement of the rotating block 506 allows it to enter the interior of the first spiral sleeve 508. Through the spiral connection between the two, the first spiral sleeve 508 can be driven to rotate on the connecting frame 510. Since the outer surface of the first spiral sleeve 508 has a reciprocating groove 509, a movable sleeve plate 511 is movably fitted onto the outer surface of the first spiral sleeve 508. A movable convex ball is fixedly provided on the inner surface of the movable sleeve plate 511, and the movable convex ball is slidably connected within the reciprocating groove 509. (It should be noted that the reciprocating groove 509 is a continuous V-shaped groove, and the movable convex ball is slidably positioned within it.) In the groove, when the first spiral sleeve 508 rotates, the movable convex ball can slide along the path opened in the reciprocating groove 509, thereby driving the movable sleeve plate 511 to move up or down on the outer surface of the first spiral sleeve 508. Therefore, when the first spiral sleeve 508 rotates, through the cooperation between the reciprocating groove 509 and the movable convex ball, the movable sleeve plate 511 can move up and down reciprocally on the outer surface of the first spiral sleeve 508. The sliding groove 513 opened at the lower end of the opposite side of the mounting plate 507, and the sliders 512 symmetrically fixed on both sides of the movable sleeve plate 511, can... The sliding plate 511 can be assisted so that the slider 512 slides synchronously in the slide groove 513 during the movement of the sliding plate 511, thereby limiting the axial movement direction of the sliding plate 511 and enabling the sliding plate 511 to move stably on the outer surface of the first spiral sleeve 508. A first return spring 514 is fixedly installed between the bottom wall of the slide groove 513 and the slider 512. Through the elastic action of the first return spring 514, the stability of the sliding plate 511 during the movement can be further enhanced, making the movement of the sliding plate 511 smoother. During the reciprocating motion of the movable sleeve 511, a second connecting rod 515 is fixedly installed at the bottom of the end of the movable sleeve 511 away from the first spiral sleeve 508, and a second spiral block 516 is fixedly installed at the bottom of the second connecting rod 515. As the movable sleeve 511 moves, the second spiral block 516 can move synchronously and accordingly through the connection of the second connecting rod 515. Figure 3 , Figure 4 as well as Figure 5As shown, a second spiral sleeve 623 is provided directly below the second spiral block 516. As the second spiral block 516 moves downward, it will move towards the second spiral sleeve 623 and gradually enter the interior of the second spiral sleeve 623. Through the spiral relationship between the two, when the second spiral block 516 contacts the second spiral sleeve 623, it can drive the second spiral sleeve 623 to rotate on the rotating base plate 604 accordingly. Initially, the movable sleeve 511 is located in the middle of the first spiral sleeve 508. There is a gap between the second spiral block 516 and the second spiral sleeve 623, and they do not contact each other. Through the design of the reciprocating groove 509 and the movable convex ball, the rotational drive of the first spiral block 506 on the first spiral sleeve 508 causes the movable sleeve 511 to move downwards and then upwards, following the opening path of the reciprocating groove 509. During the downward movement of the movable sleeve 511, the second spiral block 516 moves downwards synchronously and enters the interior of the second spiral sleeve 623, driving the second spiral sleeve 623 to rotate. During the upward movement of the movable sleeve 511, the second spiral block 516 moves upwards, driving the second spiral sleeve 623 to rotate. The spiral block 516 moves upward synchronously and moves out of the inside of the second spiral sleeve 623 (at this time, the second spiral block 516 and the second spiral sleeve 623 will lose contact). After it moves out, it continues to be pushed by the push plate 503. The first spiral block 506 continues to drive the first spiral sleeve 508 to rotate. The moving sleeve plate 511 will drive the second spiral block 516 to continue to move upward synchronously. In coordination with the upward movement of the second spiral block 516, the toothed plate 504 will move downward synchronously and move to contact the gear 603. Through the meshing between the teeth, the gear 603 can be driven to rotate, thereby driving the rotating base plate 604 to rotate. The rotation driving process of the rotating base plate 604 is described below. Furthermore, regarding the reset operation of the rotating base plate 604, the push plate 503 can be moved upward by reversing the operation of the control cylinder 502. At this time, the gear 603 is rotated first by the toothed plate 504, thus resetting the rotating base plate 604. During this process, the moving sleeve 511 will move synchronously from the upper end of the first spiral sleeve 508 to the middle position, and the rotating base plate 604 has completed its reset and is now perpendicular to the outer wall of the control frame 2. The second spiral sleeve 623 will also return to its original position directly below the second spiral block 516, keeping both on the same vertical horizontal line. At this time, the second spiral sleeve 623 is also... The second spiral block 516 will not come into contact with the second spiral block 516 and will still maintain a partial gap. Therefore, by continuing to drive the cylinder 502, the moving sleeve 511 continues to move. When it moves from the middle position of the first spiral sleeve 508 to the lower end, the second spiral block 516 will enter the interior of the second spiral sleeve 623 and come into contact with the second spiral sleeve 623. When the moving sleeve 511 continues to move and resets from the lower end position to the middle position, the second spiral block 516 will move out of the interior of the second spiral sleeve 623 and maintain the gap with the second spiral sleeve 623 again, so that all structures can be reset. During the process of the second spiral block 516 driving the second spiral sleeve 623 to rotate on the rotating base plate 604, in conjunction with the reference... Figure 4 and Figure 6 As shown, a transmission wheel 624 is fixedly installed on the outer surface of the lower end of the second spiral sleeve 623, and a belt 625 is connected between the transmission wheel 624 and the rotating base 605. When the second spiral sleeve 623 rotates, the transmission wheel 624 rotates synchronously. Through the transmission connection of the belt 625, the rotating base 605 can be synchronously driven to rotate on the rotating base plate 604. Figure 6As shown, a receiving cavity 606 is formed inside the rotating base 605. A liquid storage cylinder 607 is fixedly installed at the lower end of the receiving cavity 606, and a fixing ring 611 is installed at the upper end of the receiving cavity 606. A delivery pipe 610 is fixedly connected to the liquid storage cylinder 607 in a ring at equal intervals. The other end of the delivery pipe 610 is fixedly installed through the fixing ring 611. A nozzle 612 and a piston cylinder 614 are fixedly installed through the fixing ring 611 and the rotating base 605 in a ring at equal intervals. The piston cylinder 614 extends outward, and the nozzle 612 extends inward. The number of nozzles 612, piston cylinders 614, and delivery pipes 610 is the same, and three adjacent ones form a group, all of which pass through the fixing ring 611. 1. A junction point is formed inside the fixed ring 611, and the three are fixedly connected to each other, forming a "J"-shaped structure for transferring the cleaning fluid inside the storage cylinder 607. A piston rod 615 is slidably connected to the end of the piston cylinder 614 away from the nozzle 612, and a spherical push block 617 is fixedly installed at the end of the piston rod 615 away from the piston cylinder 614. At the same time, a second return spring 616 is fixedly installed between the spherical push block 617 and the piston cylinder 614. While the rotating base 605 rotates on the rotating base plate 604 through the transmission of the belt 625, other structures installed on the rotating base 605 rotate synchronously. Figure 4As shown, a support plate 622 is symmetrically fixed at one end of the rotating base plate 604 away from the control frame 2. An ear plate 620 is fixedly connected to the top of the support plate 622 via a fixing post 621. An annular plate 618 is fixedly disposed between the two ear plates 620. Spherical top blocks 619 are fixedly disposed in an annular pattern at equal intervals on the inner surface of the annular plate 618. Initially, the spherical top blocks 619 are in contact with the spherical push blocks 617. As the rotating base 605 rotates, the spherical push blocks 617 rotate synchronously. The spherical top blocks 619 are fixedly connected, while the spherical push blocks 617 are movably connected to the piston cylinder 614 via a second return spring 616. Therefore, the spherical top blocks 619 are fixedly connected to the piston cylinder 614. The obstruction and restriction of the top block 619, along with its spherical shape, allow the spherical pusher 617 to be pressed against the spherical top block 619 during movement, pushing the spherical pusher 617 towards the piston cylinder 614. Simultaneously, this drives the piston rod 615 into the piston cylinder 614, expelling the cleaning fluid stored between the piston cylinder 614 and the delivery pipe 610 through a one-way outlet valve inside the nozzle 612. The fluid is then sprayed out through the evenly spaced nozzle holes 613 at the end of the nozzle 612 furthest from the piston cylinder 614. The inner surface of the rotating base 605 is detachably fitted with degreased cotton that matches the shape of the outer surface of the hemispherical head 4, allowing for convenient... The degreasing cotton is regularly removed and replaced by staff. During use (i.e., when the rotating base 605 is driven to rotate), the degreasing cotton and the rotating base 605 can be considered as a single integrated structure. The degreasing cotton rotates synchronously with the rotating base 605, and its outer surface is in contact with the inner surface of the rotating base 605. The inner surface of the degreasing cotton is then attached to and covers the outer surface of the hemispherical head 4. Initially, the hemispherical head 4 is embedded within the rotating base 605, while the degreasing cotton is positioned between the two. When the cleaning fluid is sprayed through the nozzle 613, it can soak the degreasing cotton. Through the rotation of the rotating base 605, the degreasing cotton soaked in the cleaning fluid... The cotton swab rotates synchronously with the rotating base 605. Since the position of the hemispherical head 4 is fixed, the cotton swab can move relative to the hemispherical head 4 while rotating with the rotating base 605. It can also move around the hemispherical head 4 in a circular motion to wipe and clean the surface of the hemispherical head 4. When the spherical top block 619 releases the pressure on the spherical push block 617, the piston rod 615 can be pulled out from the inside of the piston cylinder 614 through the elastic action of the second return spring 616. The piston movement draws the cleaning liquid from the reservoir 607 into the delivery pipe 610, and finally into the piston cylinder 614 through the one-way inlet valve for subsequent use. During the rotation of the rotating base 605, liquid is squeezed out first, and the liquid is transferred to the degreased cotton. As the rotating base 605 continues to rotate, the liquid flows and soaks the degreased cotton. With the subsequent rotation, the soaked degreased cotton can better clean the hemispherical head 4. In the subsequent reset operation, the squeezing out of liquid can also pre-dissolve some oil and asphalt adhering to the hemispherical head 4 when it is not in use, so that a better cleaning effect can be achieved in subsequent use. As cylinder 502 continues to move, the design of the movable convex ball and reciprocating groove 509 causes the second spiral block 516 to move upward synchronously with the movable sleeve 511, gradually disengaging from the interior of the second spiral sleeve 623. After the second spiral block 516 completely disengages from the second spiral sleeve 623, the toothed plate 504 and gear 603 come into contact and mesh. Through the meshing of the teeth, the gear 603 can be driven to rotate, allowing the rotating base plate 604 to rotate about the torsion spring shaft 602 towards the control frame 2, thus achieving the storage of the rotating base plate 604. This effectively avoids physical interference caused by the subsequent control of the hemispherical head 4 by the movable frame 3 during the asphalt viscosity and toughness test. Simultaneously, according to... Figure 3 It can be seen that an elastic telescopic column 626 is provided between the control frame 2 and the rotating base plate 604, and one end of the elastic telescopic column 626 is fixedly connected to the control frame 2, and the other end is slidably connected to the rotating base plate 604. Through cooperation with the torsion spring shaft 602, it can provide auxiliary support to the rotating base plate 604 when it is not retracted. It should be noted that the rotating base plate 604 does not need to be completely folded against the outer wall of the control frame 2 when it is rotated and stored. It is only necessary to rotate it by a certain angle to ensure that it does not affect the subsequent downward or upward resetting movement of the hemispherical head 4. In addition, an inlet pipe 608 is fixedly connected to the liquid storage cylinder 607 through the rotating base 605. A screw cap 609 is provided on the inlet pipe 608. The staff can replenish the cleaning fluid into the liquid storage cylinder 607 by opening the screw cap 609 and through the inlet pipe 608. Please refer to the above work process. Figures 1 to 8 .

[0031] The circuits and controls involved in this invention are all existing technologies and will not be described in detail here.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-precision asphalt performance testing device, comprising a fixed base (1), wherein a testing instrument body (7) is fixedly connected to the top of the fixed base (1), a control frame (2) is fixedly connected to the rear side of the testing instrument body (7), a movable frame (3) is slidably connected to the control frame (2), and a hemispherical head (4) is fixedly connected to the bottom of the movable frame (3), characterized in that, It also includes: a multi-level linkage control mechanism (5) and a directional spraying and rotating purification mechanism (6); The multi-level linkage control mechanism (5) includes a first fixed plate (501), a toothed plate (504), a first spiral block (506), a first spiral sleeve (508), a movable sleeve (511), and a second spiral block (516). The first fixed plate (501) is fixedly connected to the rear side of the control frame (2). The first spiral block (506) is located below the first fixed plate (501). The toothed plate (504) is located between the first spiral block (506) and the control frame (2). The first spiral sleeve (508) is located below the first spiral block (506). The movable sleeve (511) is movably sleeved on the outer surface of the first spiral sleeve (508). The second spiral block (516) is located below the movable sleeve (511). The directional spraying and rotating purification mechanism (6) includes a gear (603), a rotating base plate (604), a rotating base (605), a spray pipe (612), and a second spiral sleeve (623). The rotating base plate (604) is located below the hemispherical head (4). The gear (603) is located at one end of the rotating base plate (604) facing the control frame (2). The rotating base (605) is located between the hemispherical head (4) and the rotating base plate (604). The spray pipe (612) is fixedly installed on the rotating base (605) in an annular shape with equal spacing. The second spiral sleeve (623) is located below the second spiral block (516).

2. The high-precision testing device for asphalt performance according to claim 1, characterized in that, The multi-level linkage control mechanism (5) also includes a cylinder (502) fixedly connected to the top of the first fixed plate (501). The output end of the cylinder (502) is fixedly connected to a push plate (503). The end of the push plate (503) facing the control frame (2) is fixedly connected to a toothed plate (504). The bottom of the end of the push plate (503) away from the control frame (2) is fixedly connected to a first connecting rod (505). The bottom of the first connecting rod (505) is fixedly connected to a first spiral block (506).

3. The high-precision testing device for asphalt performance according to claim 2, characterized in that, The bottom of the first fixed plate (501) away from the control frame (2) is symmetrically fixedly connected to the mounting plate (507), and the mounting plate (507) is slidably connected to the push plate (503). The lower ends of the mounting plate (507) are fixedly connected to the connecting frame (510), and the connecting frame (510) is rotatably connected to the outer surface of the upper end of the first spiral sleeve (508). The outer surface of the first spiral sleeve (508) is provided with a reciprocating groove (509). The inner surface of the movable sleeve plate (511) is fixedly connected to a movable convex ball, and the movable convex ball is slidably connected in the reciprocating groove (509).

4. The high-precision testing device for asphalt performance according to claim 3, characterized in that, The mounting plate (507) has a groove (513) at the lower end of the opposite side. The movable sleeve plate (511) is symmetrically fixedly connected with sliders (512), and the sliders (512) are slidably connected in the groove (513). A first return spring (514) is fixedly connected between the slider (512) and the bottom wall of the groove (513). A second connecting rod (515) is fixedly connected to the bottom of the movable sleeve plate (511) away from the first spiral sleeve (508). The bottom of the second connecting rod (515) is fixedly connected to the second spiral block (516).

5. The high-precision testing device for asphalt performance according to claim 1, characterized in that, The directional spraying and rotating purification mechanism (6) also includes a second fixed plate (601) symmetrically fixedly connected to the rear side of the control frame (2), and the second fixed plate (601) is located below the first fixed plate (501). A torsion spring shaft (602) is rotatably connected between the second fixed plates (601). The gear (603) and the rotating base plate (604) are both fixedly connected to the outer surface of the torsion spring shaft (602). The rotating base (605) is rotatably connected to the top of the rotating base plate (604) away from the control frame (2). The second spiral sleeve (623) is rotatably connected to the top of the rotating base plate (604).

6. The high-precision testing device for asphalt performance according to claim 5, characterized in that, A transmission wheel (624) is fixedly connected to the outer surface of the lower end of the second spiral sleeve (623). A belt (625) is connected between the transmission wheel (624) and the rotating base (605). A support plate (622) is symmetrically fixedly connected to the end of the rotating base plate (604) away from the control frame (2). A fixing column (621) is fixedly connected to the top of the support plate (622). An ear plate (620) is fixedly connected to the top of the fixing column (621). An annular plate (618) is fixedly connected between the tops of the ear plates (620). A spherical top block (619) is fixedly connected in an annular shape at equal intervals on the inner surface of the annular plate (618).

7. The high-precision testing device for asphalt performance according to claim 6, characterized in that, The rotating base (605) has a receiving cavity (606) inside. A liquid storage cylinder (607) is fixedly connected to the lower end of the receiving cavity (606). An inlet pipe (608) is fixedly connected to the liquid storage cylinder (607), and the inlet pipe (608) is fixedly connected to the rotating base (605). A screw cap (609) is rotatably connected to the end of the inlet pipe (608) away from the liquid storage cylinder (607).

8. The high-precision testing device for asphalt performance according to claim 7, characterized in that, The liquid storage cylinder (607) is fixedly connected to the delivery pipe (610) in a ring at equal intervals. The upper end of the receiving cavity (606) is provided with a fixing ring (611), and the fixing ring (611) is fixedly connected to the nozzle (612) through it. The nozzle (612) has spray holes (613) evenly opened at one end away from the fixing ring (611).

9. The high-precision testing device for asphalt performance according to claim 8, characterized in that, A piston cylinder (614) is fixedly connected to the fixed ring (611) in an annular shape at equal intervals. The piston cylinder (614) is fixedly connected to the adjacent nozzle (612). The end of the delivery pipe (610) away from the liquid storage cylinder (607) is fixedly connected to the fixed ring (611). The delivery pipe (610) is fixedly connected between the piston cylinder (614) and the nozzle (612). A piston rod (615) is slidably connected to the end of the piston cylinder (614) away from the nozzle (612). A spherical push block (617) is fixedly connected to the end of the piston rod (615) away from the piston cylinder (614). The spherical push block (617) is in contact with the spherical top block (619). A second return spring (616) is fixedly connected between the spherical push block (617) and the piston cylinder (614).

10. A high-precision testing device for asphalt properties according to claim 9, characterized in that, An elastic telescopic column (626) is provided between the rotating base plate (604) and the control frame (2), and the end of the elastic telescopic column (626) away from the rotating base plate (604) is fixedly connected to the control frame (2), and the end of the elastic telescopic column (626) away from the control frame (2) is slidably connected to the rotating base plate (604).

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