Asphalt mixture detection device

Abstract

The invention discloses an asphalt mixture detection device. The asphalt mixture detection device comprises a detection platform and a holding assembly, a retaining piece, a limiting piece and a connecting piece are arranged in the retaining assembly. A pressure applying disc and a positioning disc are arranged in the retaining piece, and the pressure applying disc and the positioning disc are connected through symmetrically arranged elastic arms. According to the asphalt mixture detection device, a pressing opening structure is adopted, when the external force of pressing is cancelled, the maintaining area can be shrunk under the elastic force of the first spring, the second spring and the elastic arm, and the asphalt mixture in the middle is rapidly limited. In addition, the asphalt mixture can be kept in a suspended state through supporting of the limiting plates, pressure exerting devices at the two ends can exert pressure conveniently, detection personnel can observe the stress state of the asphalt mixture conveniently, and the accuracy of test data is improved.

Description

Technical Field

[0001] The invention relates to asphalt detection technology, and in particular to an asphalt mixture detection device. Background Art

[0002] Asphalt mixture is the most important road construction material for high-grade pavement, and its performance directly affects the performance and service life of the pavement. Asphalt mixture is a composite material, mainly composed of asphalt, coarse aggregate, fine aggregate, mineral powder, and sometimes polymers and wood cellulose. These materials of different quality and quantity are mixed to form different structures and have different mechanical properties. Before actual production for road paving, fatigue performance testing is an indispensable step. The main aspect of fatigue performance testing of asphalt mixture is its anti-bending performance. When external force is applied, it will not easily fall apart or break within a certain period of time.

[0003] CN217006764U discloses an asphalt mixture detection device, which requires a hydraulic pump to provide pressure all the time, and requires external equipment to provide hydraulic pressure, making the detection device more complicated and larger in size. CN210982320U discloses an iron content detection device for iron tailings asphalt mixture, which uses a screw to tighten the asphalt mixture. Although the asphalt mixture can be fixed, it needs to be tightened to prevent the asphalt mixture from falling, which is inconvenient for actual operation during detection. Summary of the invention

[0004] In order to solve the defects of the above-mentioned prior art, the present invention proposes an asphalt mixture detection device.

[0005] The technical solution of the present invention is achieved in this way:

[0006] An asphalt mixture detection device, characterized by comprising:

[0007] A detection platform, wherein pressure applicators are arranged at both ends of the detection platform, a pressure plate is arranged on the pressure applicator, a bearing mechanism is arranged between the two pressure applicators, a sliding seat, a sliding platform and a holding component symmetrically arranged on the sliding platform are arranged in the bearing mechanism, the sliding seat is arranged on the detection platform, the sliding platform is arranged on the sliding seat, the sliding platform is provided with symmetrically arranged stepped holes, and a movable hole is arranged at the lower end of the stepped hole,

[0008] The retaining assembly comprises:

[0009] A retaining member, wherein a pressure plate and a positioning plate are provided in the retaining member, wherein the pressure plate and the positioning plate are connected via symmetrically arranged elastic arms, and when the pressure plate is subjected to force and moves toward the positioning plate, the two ends of the elastic arm are kept close to the middle, and the middle of the elastic arm is deformed by force, and a positioning column is provided between the pressure plate and the positioning plate, and the lower end of the positioning column is connected to the elastic arm via a symmetrically arranged deformation section, and the lower end of the positioning plate is provided with a symmetrically arranged elastic plate, and the elastic plate passes through the stepped hole and is arranged in the movable hole, and a holding area is formed between the elastic arm and the positioning column,

[0010] A limiting member is arranged at the lower end of the movable hole, and the limiting member is installed at the lower end of the retaining member through a connecting member, and the pressure plate is pressed downward to keep the elastic arm deformed under force, thereby expanding the area of ​​the retaining region.

[0011] In the present invention, the connecting member is composed of a rod body and a limiting plate, the limiting plate is arranged in the middle of the rod body, the upper end of the rod body is provided with a first threaded portion, the first threaded portion is provided with a first fastener, the lower end of the rod body is provided with a second threaded portion, the second threaded portion is provided with a second fastener, the first fastener is located at the upper end of the pressure plate, and the second fastener is located at the lower end of the limiting member.

[0012] In the present invention, a countersunk hole and a first through hole are provided in the middle of the pressure plate, the first fastener is arranged in the countersunk hole, and the first threaded portion is arranged at the first through hole.

[0013] In the present invention, the middle of the positioning column is hollowed out to form a positioning chamber, the rod body and the limiting plate are arranged in the positioning chamber, an extension column is provided at the lower end of the positioning column, a second through hole is formed in the middle of the extension column, a first spring is provided in the positioning chamber, and the first spring is on the limiting plate.

[0014] In the present invention, an arc-shaped block is provided on the positioning column, and an arc-shaped groove matching with the arc-shaped block is provided on the pressure plate.

[0015] In the present invention, a second spring is provided between the extension column and the limiting member, the second spring is sleeved on the rod body, and the elastic force of the second spring is smaller than the elastic force of the first spring.

[0016] In the present invention, the limiting plate is provided with symmetrically arranged limiting rods, and the positioning chamber is provided with limiting holes that cooperate with the limiting rods.

[0017] In the present invention, the elastic arm is composed of a first movable segment and a second movable segment, and an arc-shaped opening is provided at the connection between the first movable segment and the second movable segment.

[0018] In the present invention, a plurality of limiting plates are provided on the wall surfaces of the first movable section and the second movable section facing the positioning column, and the height of the limiting plates gradually increases from the middle of the elastic arm to both ends.

[0019] In the present invention, the limiting member is composed of a limiting block and positioning blocks symmetrically arranged on both sides of the limiting block, a gap for accommodating the elastic plate is formed between the limiting block and the positioning block, a symmetrically arranged retaining block is provided on the connecting member, a third through hole cooperating with the connecting member is provided in the middle of the limiting block, a retaining opening cooperating with the retaining block is provided at the third through hole, the maximum length between the positioning blocks is h1, the movable hole is composed of a symmetrical long inner wall and a wide inner wall, the length of the long inner wall is h2, the length of the wide inner wall is h3, h1>h2>h3.

[0020] The asphalt mixture detection device of the present invention has the following beneficial effects: the asphalt mixture detection device adopts a press-to-open structure, and when the pressing external force is cancelled, the holding area can be reduced under the elastic force of the first spring, the second spring and the elastic arm, and the asphalt mixture in the middle can be quickly limited. In addition, the asphalt mixture can be kept in a suspended state through the support of the limit plate, which is convenient for the pressure applicators at both ends to apply pressure, which is beneficial for the inspection personnel to observe the stress state of the asphalt mixture and improve the accuracy of the test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of the asphalt mixture detection device of the present invention;

[0022] Figure 2 for Figure 1 Schematic diagram of the bearing mechanism structure in FIG.

[0023] Figure 3 for Figure 2 Exploded diagram of some structures in the figure;

[0024] Figure 4 for Figure 3 A top view of the sliding platform and a retaining assembly structure;

[0025] Figure 5 for Figure 4 The cross-sectional view at AA in FIG.

[0026] Figure 6 for Figure 3 Schematic diagram of the structure of the holding component in FIG.

[0027] Figure 7 for Figure 6 The main view of

[0028] Figure 8 for Figure 6Exploded diagram of

[0029] Fig. 9 for Figure 8 A schematic diagram of the retaining structure in FIG.

[0030] Fig.10 for Figure 8 Schematic diagram of the limiter structure;

[0031] Fig.11 for Figure 8 A schematic diagram of the structure of the connecting member, the first spring and the second spring;

[0032] Fig.12 for Figure 8 Sectional view of the retaining structure

[0033] Fig.13 for Figure 8 The force analysis diagram of the retaining structure in FIG.

[0034] Fig.14 for Figure 3 The cross-sectional view of the sliding platform structure in FIG.

[0035] Fig.15 for Fig.14 A partial enlarged view of point B in FIG.

[0036] In the figure: detection platform 1, holding component 2, pressure applicator 3, pressure plate 4, bearing mechanism 5, sliding seat 6, sliding platform 7, stepped hole 8, movable hole 9, first recess 10, positioning plate 11, protrusion 12, long inner wall 13, wide inner wall 14, limiter 15, positioning block 16, second recess 17, third recess 18, limiter plate 19, tapered surface 20, elastic plate 21, arc segment 22, arc surface 23, holding member 24, connecting member 25, pressure plate 26, elastic arm 27, first movable segment 28, second movable segment 29, arc mouth 30, positioning column 31, Support block 32, holding area 33, recessed surface 34, deformation section 35, fourth through hole 36, countersunk hole 37, first through hole 38, positioning chamber 39, second through hole 40, limiting rod 41, limiting hole 42, arc block 43, arc groove 44, limiting block 45, holding block 46, third through hole 47, holding port 48, handle 49, limiting area 50, guide slope 51, limiting plate 52, rod body 53, first threaded portion 54, first fastener 55, second threaded portion 56, second fastener 57, first spring 58, second spring 59, gap 60. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0038] like Figures 1 to 15As shown, the asphalt mixture detection device of the present invention comprises a detection platform 1 and a holding component 2 , wherein the holding component 2 is installed in the middle of the detection platform 1 .

[0039] The two ends of the detection platform 1 are provided with a pressure applicator 3, and a pressure plate 4 is provided on the pressure applicator 3. The pressure applicator 3 can be a cylinder, and the pressure plate 4 can be installed on the cylinder. By providing the pressure applicator 3 at both ends, it is convenient to control the external force applied at both ends to be consistent.

[0040] The bearing mechanism 5 is arranged between two pressure applicators 3, and the asphalt mixture to be fatigue tested is placed on the bearing mechanism 5, and pressure is applied to it by the pressure applicators 3 at both ends. The bearing mechanism 5 is provided with a sliding seat 6, a sliding platform 7 and a holding component 2 symmetrically arranged on the sliding platform 7. The sliding seat 6 is arranged on the detection platform 1, and the sliding platform 7 is arranged on the sliding seat 6. The sliding platform 7 is provided with symmetrically arranged stepped holes 8, and the lower end of the stepped hole 8 is provided with a movable hole 9. The sliding platform 7 is installed on the sliding seat 6 through a slide rail.

[0041] The stepped hole 8 is provided with a symmetrical first notch 10 for matching and installing with the positioning disk 11. The positioning disk 11 is provided with a symmetrically arranged protrusion 12, which is arranged in the first notch 10 so that the positioning disk 11 does not rotate. The movable hole 9 is rectangular, with two side surfaces being longer surfaces and the other two side surfaces being shorter surfaces. The movable hole 9 is composed of a symmetrical long inner wall 13 and a wide inner wall 14. When installing the limiter 15, the positioning block 16 on the limiter 15 is inserted toward the wide inner wall 14, and then rotated 90° to keep the positioning block 16 reaching the lower end of the long inner wall 13. The long inner wall 13 is provided with a second notch 17 and a third notch 18. The second notch 17 is located at the upper end of the third notch 18. The limiting plate 19 is arranged at the second notch 17. When squeezed by the conical surface 20, the elastic plate 21 is kept entering the second notch 17. At the same time, an arc surface 23 matching with the arc segment 22 on the elastic plate 21 is provided at the upper end of the second notch 17 .

[0042] The holding assembly 2 includes a holding member 24, a limiting member 15 and a connecting member 25. The holding member 24 is arranged on the sliding platform 7 through the limiting member 15, and the connecting member 25 is to arrange the limiting member 15 at the lower end of the holding member 24 and connect the limiting member 15 with the holding member 24.

[0043] The retaining member 24 is provided with a pressure plate 26 and a positioning plate 11, and the pressure plate 26 is arranged at the upper end of the positioning plate 11. The pressure plate 26 and the positioning plate 11 are connected by symmetrically arranged elastic arms 27. When the pressure plate 26 is forced to move toward the positioning plate 11, the two ends of the elastic arm 27 are kept close to the middle, and the middle of the elastic arm 27 is deformed by force.

[0044] The elastic arm 27 is composed of a first movable section 28 and a second movable section 29, and an arc-shaped opening 30 is provided at the connection between the first movable section 28 and the second movable section 29. The arc-shaped opening 30 facilitates the deformation of the portion where the first movable section 28 and the second movable section 29 are connected by force, so that the upper end of the first movable section 28 moves downward.

[0045] A plurality of limit plates 19 are provided on the wall surface of the first movable section 28 and the second movable section 29 facing the positioning column 31, and the height of the limit plates 19 gradually increases from the middle of the elastic arm 27 to both ends. The limit plates 19 are used to cooperate with the support blocks 32 on the positioning column 31 to limit the position of the asphalt mixture to be detected, increase the contact area with the positioning column 31, and keep the asphalt mixture stably set in the holding area 33.

[0046] A positioning column 31 is provided between the pressure plate 26 and the positioning plate 11. A symmetrical support block 32 is provided on the positioning column 31. The middle of the support block 32 forms an inward concave surface 34, which is used to increase the contact area with the asphalt mixture and improve the stability of the asphalt mixture. The lower end of the positioning column 31 is connected to the elastic arm 27 through a symmetrically arranged deformation section 35. When the deformation section 35 is subjected to the downward external force of the positioning column 31, it can be deformed downward with a piece. When subjected to the extrusion force of the elastic arm 27, the deformation section 35 can be forced to move close to the positioning column 31.

[0047] The lower end of the positioning plate 11 is provided with a symmetrically arranged elastic plate 21, and the elastic plate 21 is connected to the lower end of the positioning plate 11 through an arc segment 22. A fourth through hole 36 is provided in the middle of the positioning plate 11 for the positioning column 31 to move therein. The elastic plate 21 passes through the stepped hole 8 and is arranged in the movable hole 9, and a holding area 33 is formed between the elastic arm 27 and the positioning column 31, and the asphalt mixture is arranged in the holding area 33.

[0048] The limit member 15 is arranged at the lower end of the movable hole 9, and the limit member 15 is installed at the lower end of the retaining member 24 through a connecting member 25. The pressure plate 26 is pressed down to keep the elastic arm 27 deformed under force, thereby expanding the area of ​​the retaining area 33. After the area of ​​the retaining area 33 is expanded, it is convenient to put in the asphalt mixture. After the asphalt mixture is put in, the external force pressing the pressure plate 26 is cancelled, so that the pressure plate 26 can be pushed upward under the elastic force of the first spring 58, the second spring 59 and the elastic arm 27, thereby reducing the area of ​​the retaining area 33 and clamping the asphalt mixture.

[0049] The connecting member 25 is composed of a rod body 53 and a limiting plate 52. The limiting plate 52 is arranged in the middle of the rod body 53. The upper end of the rod body 53 is provided with a first threaded portion 54, and the first threaded portion 54 is provided with a first fastener 55. The lower end of the rod body 53 is provided with a second threaded portion 56, and the second threaded portion 56 is provided with a second fastener 57. The first fastener 55 is located at the upper end of the pressure plate 26, and the second fastener 57 is located at the lower end of the limiting member 15. When the first fastener 55 rotates, the position of the pressure plate 26 can be changed. When the first fastener 55 tightens the pressure plate 26 to contact with the positioning column 31, as shown in FIG. Figure 7 In the state shown, the area of ​​the holding region 33 is a constant value, and the elastic arm 27, the first spring 58 and the second spring 59 cannot push the pressure plate 26 upward, thereby failing to change the area of ​​the holding region 33.

[0050] When the area of ​​the holding area 33 needs to be changed, the first fastener 55 only needs to be rotated upward. The second fastener 57 is used to adjust the positional relationship between the stopper 15 and the sliding platform 7. The second fastener 57 can be rotated upward to keep the stopper 15 locked in the third notch 18.

[0051] When the second fastener 57 continues to rotate upward, the positioning column 31 can be driven downward by the limiting plate 52 to enter the fourth through hole 36. The arc segment 22 on the elastic plate 21 is pushed by the tapered surface 20 between the positioning column 31 and the extension column 35, so that the elastic plate 21 gradually enters the second recess 17 for limiting. At the same time, the distance between the positioning column 31 and the pressure plate 26 can be increased, so that the pressure plate 26 can continue to apply pressure in the direction of the positioning column 31, and the area of ​​the holding area 33 is changed.

[0052] A counterbore 37 and a first through hole 38 are provided in the middle of the pressure plate 26 . The first fastener 55 is disposed in the counterbore 37 , and the first threaded portion 54 is disposed at the first through hole 38 .

[0053] The middle of the positioning column 31 is hollowed out to form a positioning chamber 39, and the rod body 53 and the limiting plate 52 are arranged in the positioning chamber 39. The lower end of the positioning column 31 is provided with an extension column 35, and the middle of the extension column 35 forms a second through hole 40. A first spring 58 is arranged in the positioning chamber 39, and the first spring 58 is located on the limiting plate 52. The limiting plate 52 is provided with a symmetrically arranged limiting rod 41, and a limiting hole 42 is provided in the positioning chamber 39 to cooperate with the limiting rod 41. An arc block 43 is provided on the positioning column 31, and an arc groove 44 is provided on the pressure plate 26 to cooperate with the arc block 43.

[0054] A second spring 59 is provided between the extension column 35 and the stopper 15. The second spring 59 is sleeved on the rod body 53. The elastic force of the second spring 59 is smaller than the elastic force of the first spring 58. A conical surface 20 is provided at the connection between the extension column 35 and the positioning column 31.

[0055] The limiting member 15 is composed of a limiting block 45 and positioning blocks 16 symmetrically arranged on both sides of the limiting block 45. A gap 60 for accommodating the elastic plate 21 is formed between the limiting block 45 and the positioning block 16. A symmetrically arranged retaining block 46 is arranged on the limiting block 45. A third through hole 47 cooperating with the connecting member 25 is arranged in the middle of the limiting block 45, and a retaining opening 48 cooperating with the retaining block 46 is arranged at the third through hole 47. The height of the positioning block 16 is higher than that of the limiting block 45, so that a limiting area 50 is formed at the upper end of the limiting block 45.

[0056] A guiding slope 51 is disposed at the lower end of the wide inner wall 14 , and the positioning block 16 is guided by the guiding slope 51 and deformed in the direction of the limiting block 45 .

[0057] When the pressure plate 26 rotates, the positioning column 31 can be driven to rotate, and at the same time, the connecting member 25 is driven by the positioning column 31, and the connecting member 25 drives the limiting member 15 to rotate.

[0058] The maximum length between the positioning blocks 16 is h1, and the movable hole 9 is composed of a symmetrical long inner wall 13 and a wide inner wall 14. The length of the long inner wall 13 is h2, and the length of the wide inner wall 14 is h3, and h1>h2>h3. When the limiting member 15 is at the lower end of the long inner wall 13, the limiting member 15 will not be pulled upward by force, and when it is at the lower end of the wide inner wall 14, the limiting member 15 can be pulled upward by force.

[0059] When the entire retaining assembly 2 needs to be removed, there is no need to twist the first fastener 55 and the second fastener 57. It is only necessary to align the arc block 43 and the arc groove 44, and then rotate the handle 49 on the pressure plate 26 to cause the elastic arm 27 to twist. The pressure plate 26 drives the positioning column 31 to rotate, the positioning column 31 drives the connecting member 25 to rotate, and the connecting member 25 drives the limiting member 15 to rotate. Rotate 90° to allow the positioning block 16 at the lower end of the long inner wall 13 to reach the lower end of the wide inner wall 14, so that it can be taken out from the lower end of the movable hole 9.

[0060] The pressure plate 26 is subjected to the downward pressure of F1, and keeps the middle of the elastic arm 27 moving in the direction of F2.

[0061] Before testing, the first fastener 55 is adjusted to a suitable position on the first threaded portion 54, and then the pressure plate 26 is pressed to deform the first spring 58, the second spring 59 and the elastic arm 27, thereby expanding the holding area 33 and placing the asphalt mixture to be tested in the holding area 33. Finally, the pressure applicators 3 at both ends are started to squeeze the asphalt mixture, and the pressure value of the pressure applicator 3 and the time of pressure application are recorded until the asphalt mixture breaks or disperses.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An asphalt mixture detection device, characterized in that: include: A detection platform, wherein pressure applicators are provided at both ends of the detection platform, and pressure plates are provided on the pressure applicators. A bearing mechanism is arranged between two pressure applicators, wherein the bearing mechanism is provided with a sliding seat, a sliding platform and a holding component symmetrically arranged on the sliding platform, the sliding seat is arranged on the detection platform, the sliding platform is arranged on the sliding seat, the sliding platform is provided with symmetrically arranged stepped holes, and the lower end of the stepped hole is provided with a movable hole, The retaining assembly comprises: A retaining member, wherein a pressure plate and a positioning plate are provided in the retaining member, wherein the pressure plate and the positioning plate are connected via symmetrically arranged elastic arms, and when the pressure plate is subjected to force and moves toward the positioning plate, the two ends of the elastic arm are kept close to the middle, and the middle of the elastic arm is deformed by force, and a positioning column is provided between the pressure plate and the positioning plate, and the lower end of the positioning column is connected to the elastic arm via a symmetrically arranged deformation section, and the lower end of the positioning plate is provided with a symmetrically arranged elastic plate, and the elastic plate passes through the stepped hole and is arranged in the movable hole, and a holding area is formed between the elastic arm and the positioning column, A limiting member is arranged at the lower end of the movable hole, and the limiting member is installed at the lower end of the retaining member through a connecting member, and the pressure plate is pressed downward to keep the elastic arm deformed under force, thereby expanding the area of ​​the retaining region.

2. The asphalt mixture detection device according to claim 1, characterized in that: The connecting member is composed of a rod body and a limiting plate, the limiting plate is arranged in the middle of the rod body, the upper end of the rod body is provided with a first threaded portion, the first threaded portion is provided with a first fastener, the lower end of the rod body is provided with a second threaded portion, the second threaded portion is provided with a second fastener, the first fastener is located at the upper end of the pressure plate, and the second fastener is located at the lower end of the limiting member.

3. The asphalt mixture detection device according to claim 2, characterized in that: A countersunk hole and a first through hole are provided in the middle of the pressure plate, the first fastener is arranged in the countersunk hole, and the first threaded portion is arranged at the first through hole.

4. The asphalt mixture detection device according to claim 3, characterized in that: The middle of the positioning column is hollowed out to form a positioning chamber, the rod body and the limiting plate are arranged in the positioning chamber, an extension column is provided at the lower end of the positioning column, a second through hole is formed in the middle of the extension column, a first spring is provided in the positioning chamber, and the first spring is on the limiting plate.

5. The asphalt mixture detection device according to claim 4, characterized in that: The positioning column is provided with an arc block, and the pressure plate is provided with an arc groove matched with the arc block.

6. The asphalt mixture detection device according to claim 5, characterized in that: A second spring is provided between the extension column and the limiting member. The second spring is sleeved on the rod body. The elastic force of the second spring is smaller than the elastic force of the first spring.

7. The asphalt mixture detection device according to claim 6, characterized in that: The limiting plate is provided with symmetrically arranged limiting rods, and the positioning chamber is provided with limiting holes that cooperate with the limiting rods.

8. The asphalt mixture detection device according to claim 1, characterized in that: The elastic arm is composed of a first movable section and a second movable section, and an arc-shaped opening is provided at the connection between the first movable section and the second movable section.

9. The asphalt mixture detection device according to claim 8, characterized in that: A plurality of limit plates are arranged on the wall surfaces of the first movable section and the second movable section facing the positioning column, and the height of the limit plates gradually increases from the middle of the elastic arm to both ends.

10. The asphalt mixture detection device according to claim 1, characterized in that: The limiting member is composed of a limiting block and positioning blocks symmetrically arranged on both sides of the limiting block, a gap for accommodating the elastic plate is formed between the limiting block and the positioning block, a symmetrically arranged retaining block is provided on the connecting member, a third through hole cooperating with the connecting member is provided in the middle of the limiting block, a retaining opening cooperating with the retaining block is provided at the third through hole, the maximum length between the positioning blocks is h1, the movable hole is composed of a symmetrical long inner wall and a wide inner wall, the length of the long inner wall is h2, the length of the wide inner wall is h3, h1>h2>h3.

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