An asphalt mixture compaction device and compaction method

Abstract

This application relates to the field of asphalt mixture preparation technology, and discloses an asphalt mixture compaction device, including a support frame, a first optical shaft, a pressure plate, a clamping block, a first annular pressure sensor, a first spring, a first electric push rod, a first moving plate, a thumb cylinder, and a mold placement plate. In use, the first electric push rod and the thumb cylinder work together to move the pressure plate upwards, or release the pressure plate to compact the asphalt mixture laid inside the asphalt mixture mold, thereby completing the continuous compaction of the asphalt mixture. Furthermore, during the upward movement of the pressure plate, the first spring is compressed, thus generating elastic force. Different elastic forces are generated as the first spring is compressed to different degrees. Then, under the action of the reaction force and the change in the vertical height of the pressure plate, different compaction forces are generated. This application also discloses an asphalt mixture compaction method.

Description

Technical Field

[0001] This application relates to the field of asphalt mixture preparation technology, for example to an asphalt mixture compaction device and compaction method. Background Technology

[0002] A related technology (publication number: CN110849685B) discloses an integrated roller compaction machine for asphalt mixtures, comprising a compaction device, a sliding device, a compaction power device, and a rolling device. The compaction device includes a guide support and a compaction rod capable of sliding up and down along the guide support. The lower end of the compaction rod is connected to a compaction head via a ball joint, and a vertically arranged rack is provided on the compaction rod. The compaction power device includes a half-gear for meshing with the rack, the half-gear being connected to the output shaft of a drive motor, and the drive motor being fixed to the guide support.

[0003] In implementing the above embodiments, at least the following problems were found in the related technology:

[0004] The integrated roller compactor for asphalt mixtures uses a drive motor to rotate a gear. Through the meshing of the gears and the guiding support, the rack drives the compaction rod to move reciprocally. This ultimately moves the compaction head up and down, compacting the asphalt mixture inside the mold. This ensures consistent compaction force with each pass, solving the problems of uneven compaction, low efficiency, and excessive labor caused by manual compaction. However, when compacting asphalt mixtures with different mix proportions, different compaction forces are often required. Since compaction relies heavily on gravity, adjusting the compaction force is inconvenient.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0006] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0007] This disclosure provides an asphalt mixture compaction device and compaction method to facilitate adjustment of compaction force.

[0008] In some embodiments, the asphalt mixture compaction device includes: a support frame, the support frame including a first support plate and a second support plate whose planes are parallel to each other, the second support plate being located above the first support plate along the height direction of the support frame; a first optical axis, slidably passing through the second support plate along the height direction of the support frame; a pressure plate, installed at one end of the optical axis and located between the opposing surfaces of the first and second support plates, the plane of the pressure plate being parallel to the plane of the first support plate; a clamping block, installed on the pressure plate; and a first annular pressure sensor, sleeved on the first optical axis, installed on the second support plate, and located between the opposing surfaces of the first and second support plates. Between the opposite sides; a first spring, fitted onto the first optical axis and located between the pressure plate and the first annular pressure sensor; a first electric push rod, mounted on the second support plate along the height direction of the support frame, with the moving end of the first electric push rod facing the first support plate; a first movable plate, mounted on the moving end of the first electric push rod; a thumb cylinder, mounted on the first movable plate, used to clamp or release the clamping block; a mold placement plate, slidably mounted on the first support plate and located between the opposite surfaces of the first and second support plates, used to support and place the asphalt mixture mold; wherein, under the elastic force of the first spring, the pressure plate can abut against the asphalt mixture laid inside the asphalt mixture mold.

[0009] Optionally, the support frame further includes: a third support plate, the plane of which is located is parallel to the plane of which is located of the first support plate, and the third support plate and the second support plate are located on both sides of the support frame along the length direction of the support frame; and support rods, which are respectively installed between the first support plate, the second support plate and the third support plate.

[0010] Optionally, it further includes: a linear slide table, mounted on the third support plate along the length direction of the support frame and located between the opposing surfaces of the third support plate and the first support plate; a movable frame, mounted on the movable end of the linear slide table; a second electric push rod, mounted on the movable frame along the height direction of the support frame, with the movable end of the second electric push rod facing the first support plate; a second movable plate, mounted on the movable end of the second electric push rod; a second optical axis, slidably passing through the second movable plate along the height direction of the support frame; a support base, mounted on one end of the second optical axis; and a pressure plate. Rollers are rotatably mounted on the support base along the width direction of the support frame and are evenly distributed on the support base along the length direction of the support frame; a first limiting ring is mounted on the other end of the second optical axis; a second annular pressure sensor is sleeved on the second optical axis, mounted on the movable plate, and located between the movable plate and the support base; a second spring is sleeved on the second optical axis and located between the second annular pressure sensor and the support base; wherein, driven by the second electric push rod, the plurality of pressure rollers can abut against the asphalt mixture laid inside the asphalt mixture mold.

[0011] Optionally, it further includes: a third optical axis, which is slidably disposed in the movable frame along the height direction of the support frame and connected to the second movable plate.

[0012] Optionally, it further includes: a first metal pad, fitted onto the second optical axis, and located at the contact point between the second spring and the support base and the second annular pressure sensor.

[0013] Optionally, it further includes: a linear guide rail, which is installed on the first support plate along the length of the support frame and located below the second support plate and the third support plate; a slider, which is slidably installed on the linear guide rail and connected to the mold placement plate; and a guide rail clamp, which is installed on the mold placement plate and is used to clamp or release the linear guide rail.

[0014] Optionally, it also includes: limiting pieces, which are respectively installed at both ends of the linear guide rail.

[0015] Optionally, it further includes: a fourth optical axis, which is slidably disposed in the second support plate along the height direction of the support frame and connected to the first movable plate.

[0016] Optionally, it further includes: a second metal pad, fitted onto the first optical axis, and located at the contact point between the first spring and the pressure plate and the first annular pressure sensor.

[0017] In some embodiments, the asphalt mixture compaction method includes: fixing an asphalt mixture mold to a mold placement plate, and then adjusting the position of the mold placement plate so that the pressure plate can be pressed into the interior of the asphalt mixture mold; spreading the mixed asphalt mixture into the interior of the asphalt mixture mold, higher than the perimeter of the asphalt mixture mold; controlling the pressure plate to press the asphalt mixture spread into the interior of the asphalt mixture mold a preset number of times and a preset pressure; readjusting the position of the mold placement plate again so that the pressed asphalt mixture moves to a position where it can be compacted by multiple pressure rollers; and controlling the multiple pressure rollers to compact the pressed asphalt mixture a preset number of times and a preset pressure.

[0018] The asphalt mixture compaction device provided in this disclosure can achieve the following technical effects:

[0019] This disclosure provides an asphalt mixture compaction device, comprising a support frame, a first optical shaft, a pressure plate, a clamping block, a first annular pressure sensor, a first spring, a first electric push rod, a first moving plate, a thumb cylinder, and a mold placement plate. The support frame supports the entire device. The support frame includes a first support plate and a second support plate whose planes are parallel to each other. Along the height direction of the support frame, the second support plate is located above the first support plate, and both support the relevant components of the installation device. The first optical shaft slidably passes through the second support plate along the height direction of the support frame, serving as a guide and support, and can slide relative to the second support plate along the height direction of the support frame. The pressure plate is installed at one end of the optical shaft and is located between the opposing surfaces of the first and second support plates. The plane of the pressure plate is parallel to the plane of the first support plate, and it is used to press the asphalt mixture laid inside the asphalt mixture mold. The clamping block is installed on the pressure plate and moves synchronously with the pressure plate. A first annular pressure sensor is sleeved on the first optical axis, mounted on the second support plate, and located between the opposing surfaces of the first and second support plates. It is used to detect the force generated by the deformation of the first spring. A first spring is sleeved on the first optical axis and located between the pressure plate and the first annular pressure sensor, providing elastic force. A first electric push rod is mounted on the second support plate along the height direction of the support frame, with its moving end facing the first support plate, providing driving force to achieve linear movement. A first movable plate is mounted on the moving end of the first electric push rod and moves towards the first support plate under the drive of the first electric push rod. A thumb cylinder is mounted on the first movable plate and used to clamp or release the clamping block to adjust the position of the pressure plate. A mold placement plate is slidably mounted on the first support plate and located between the opposing surfaces of the first and second support plates. It supports the asphalt mixture mold and can slide relative to the first support plate to adjust the position of the asphalt mixture mold. Under the elastic force of the first spring, the pressure plate can abut against the asphalt mixture laid inside the asphalt mixture mold.

[0020] During operation, once the asphalt mixture is laid into the asphalt mixture mold and the mold placement plate is adjusted to be directly below the pressure plate, compaction can begin. At this point, controlling the first electric push rod moves the first moving plate along the height of the support frame, ultimately adjusting the vertical position of the thumb cylinder. Controlling the thumb cylinder clamps or releases the clamping block. Together, these actions move the pressure plate upwards or release it to compact the asphalt mixture laid into the mold, thus completing continuous compaction of the asphalt mixture. Furthermore, during the upward movement of the pressure plate, the first spring is compressed, generating elastic force. Different degrees of compression produce different elastic forces. Under the action of the reaction force and changes in the vertical height of the pressure plate, different compaction forces are generated. This allows for adjustment of the compaction force to compact asphalt mixtures with different proportions. Simultaneously, the first annular pressure sensor detects the elastic force generated by the deformation of the first spring, facilitating control of the compaction force.

[0021] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0022] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are considered similar elements. The drawings do not constitute a limitation of scale, and wherein:

[0023] Figure 1 This is a schematic diagram of the structure of an asphalt mixture compaction device provided in an embodiment of this disclosure;

[0024] Figure 2 This is a schematic diagram of the structure of an asphalt mixture compaction device provided in an embodiment of this disclosure;

[0025] Figure 3 This is a schematic diagram of the structure of an asphalt mixture compaction device provided in an embodiment of this disclosure;

[0026] Figure 4 This is a schematic diagram of the structure of an asphalt mixture compaction device provided in an embodiment of this disclosure;

[0027] Figure 5 This is a schematic diagram of the structure of an asphalt mixture compaction device provided in an embodiment of this disclosure;

[0028] Figure 6 This is a schematic diagram of the structure of an asphalt mixture compaction device provided in an embodiment of this disclosure;

[0029] Figure 7 This is a schematic diagram of the structure of an asphalt mixture compaction device provided in an embodiment of this disclosure;

[0030] Figure 8 This is a flowchart of an asphalt mixture compaction method provided in an embodiment of this disclosure.

[0031] Figure label:

[0032] 1: Support frame; 01: First support plate; 02: Second support plate; 03: Third support plate; 04: Support rod; 2: First optical axis; 3: Pressure plate; 4: Clamping block; 5: First annular pressure sensor; 6: First spring; 7: First electric push rod; 8: First moving plate; 9: Thumb cylinder; 10: Trial mold placement plate; 11: Linear slide; 12: Moving frame; 13: Second electric push rod; 14: Second moving plate; 15: Second optical axis; 16: Support base ; 17: Pressure roller; 18: First limiting ring; 19: Second annular pressure sensor; 20: Second spring; 21: Third optical axis; 22: Third linear bearing; 23: Second linear bearing; 24: First metal gasket; 25: Linear guide rail; 26: Slider; 27: Guide rail clamp; 28: Limiting piece; 29: Fourth optical axis; 30: Fourth linear bearing; 31: First linear bearing; 32: Second metal gasket; 33: Clamping plate; 34: Second limiting ring. Detailed Implementation

[0033] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0034] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0035] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0036] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0037] Unless otherwise stated, the term "multiple" means two or more.

[0038] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0039] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0040] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0041] Combination Figures 1 to 8As shown, this embodiment of the present disclosure provides an asphalt mixture compaction device, including a support frame 1, a first optical shaft 2, a pressure plate 3, a clamping block 4, a first annular pressure sensor 5, a first spring 6, a first electric push rod 7, a first moving plate 8, a thumb cylinder 9, and a mold placement plate 10. The support frame 1 is used to support the entire device. The support frame 1 includes a first support plate 01 and a second support plate 02 whose planes are parallel to each other. Along the height direction of the support frame 1, the second support plate 02 is located above the first support plate 01, and is used to support the relevant components of the installation device. The first optical shaft 2 is slidably inserted through the second support plate 02 along the height direction of the support frame 1, and is used to provide guidance and support. It can slide relative to the second support plate 02 along the height direction of the support frame 1. The pressure plate 3 is installed at one end of the optical shaft and is located between the opposite surfaces of the first support plate 01 and the second support plate 02. The plane of the pressure plate 3 is parallel to the plane of the first support plate 01, and is used to press the asphalt mixture laid inside the asphalt mixture mold. The clamping block 4 is mounted on the pressure plate 3 and moves synchronously with it. The first annular pressure sensor 5 is sleeved on the first optical axis 2, mounted on the second support plate 02, and located between the opposing surfaces of the first and second support plates 01 and 02, used to detect the force generated by the deformation of the first spring 6. The first spring 6 is sleeved on the first optical axis 2 and located between the pressure plate 3 and the first annular pressure sensor 5, used to provide elastic force. The first electric push rod 7 is mounted on the second support plate 02 along the height direction of the support frame 1, with its moving end facing the first support plate 01, used to provide driving force to achieve linear movement. The first moving plate 8 is mounted on the moving end of the first electric push rod 7 and moves towards the direction of the first support plate 01 under the drive of the first electric push rod 7. The thumb cylinder 9 is mounted on the first moving plate 8 and used to clamp or release the clamping block 4 to adjust the position of the pressure plate 3. The mold placement plate 10 is slidably mounted on the first support plate 01 and located between the opposing surfaces of the first support plate 01 and the second support plate 02. It is used to support and place the asphalt mixture mold and can slide relative to the first support plate 01 to adjust the position of the asphalt mixture mold. Under the elastic force of the first spring 6, the pressure plate 3 can abut against the asphalt mixture laid inside the asphalt mixture mold.

[0042] This disclosure provides an asphalt mixture compaction device. When the asphalt mixture is laid into the asphalt mixture mold and the position of the mold placement plate 10 is adjusted so that it is directly below the pressure plate 3, compaction can begin. At this time, controlling the first electric push rod 7 will move the first moving plate 8 along the height direction of the support frame 1, ultimately adjusting the vertical position of the thumb cylinder 9. Controlling the thumb cylinder 9 will clamp or release the clamping block 4. The two working together will move the pressure plate 3 upwards or release it to compact the asphalt mixture laid into the mold, thus completing the continuous compaction of the asphalt mixture. Furthermore, during the upward movement of the pressure plate 3, the first spring 6 is compressed, generating elastic force. Different elastic forces are generated as the first spring 6 is compressed to different degrees. Then, under the action of the reaction force and the change in the vertical height of the pressure plate 3, different compaction forces are generated. This facilitates the adjustment of the compaction force, enabling the compaction of asphalt mixtures with different proportions. Meanwhile, the first annular pressure sensor 5 can detect the elastic force generated by the deformation of the first spring 6, thereby facilitating the control of the pressure force.

[0043] Optionally, combined Figure 1 As shown, the support frame 1 also includes a third support plate 03 and a support rod 04. The plane of the third support plate 03 is parallel to the plane of the first support plate 01, and is used to support the relevant components of the mounting device. Along the length of the support frame 1, the third support plate 03 and the second support plate 02 are located on both sides of the support frame 1 to avoid interference between the relevant components during movement. The support rod 04 is installed between the first support plate 01, the second support plate 02, and the third support plate 03, respectively, to determine the relative positions of the first support plate 01, the second support plate 02, and the third support plate 03.

[0044] In this embodiment, the third support plate 03 and the support rod 04 are assembled together with the first support plate 01 and the second support plate 02 to form a support frame 1 to support the relevant components of the mounting device.

[0045] Optionally, combined Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the system also includes a linear slide 11, a movable frame 12, a second electric push rod 13, a second movable plate 14, a second optical axis 15, a support base 16, a pressure roller 17, a first limiting ring 18, a second annular pressure sensor 19, and a second spring 20. The linear slide 11 is mounted on the third support plate 03 along the length of the support frame 1, and is located between the opposing surfaces of the third support plate 03 and the first support plate 01, for linear movement. The movable frame 12 is mounted on the movable end of the linear slide 11 and moves along the length of the support frame 1 under the drive of the linear slide 11. The second electric push rod 13 is mounted on the movable frame 12 along the height of the support frame 1, with its movable end facing the first support plate 01, for linear movement. The second movable plate 14 is mounted on the movable end of the second electric push rod 13 and moves towards the first support plate 01 under the drive of the second electric push rod 13. The second optical shaft 15 is slidably mounted on the second movable plate 14 along the height direction of the support frame 1, serving as a guide and support. A support seat 16 is installed at one end of the second optical shaft 15 to support and mount a rotatable pressure roller 17. The pressure roller 17 is rotatably mounted on the support seat 16 along the width direction of the support frame 1, and is evenly distributed on the support seat 16 along the length direction of the support frame 1, all used for compacting the pressed asphalt mixture. A first limiting ring 18 is installed at the other end of the second optical shaft 15 to limit its movement and prevent it from detaching from the second movable plate 14. A second annular pressure sensor 19 is sleeved on the second optical shaft 15, mounted on the movable plate, and located between the movable plate and the support seat 16, used to detect the elastic force generated by the deformation of the second spring 20. The second spring 20 is sleeved on the second optical shaft 15 and located between the second annular pressure sensor 19 and the support seat 16, used to provide elastic force. Driven by the second electric push rod 13, multiple pressure rollers 17 can be used to counteract the asphalt mixture laid inside the asphalt mixture mold.

[0046] In this embodiment, after the asphalt mixture is pressed into the asphalt mixture mold, the position of the mold placement plate 10 is adjusted so that it is directly below the multiple pressure plates 3, and then the rolling operation can begin. At this time, controlling the second electric push rod 13 will drive the second moving plate 14 to move along the height direction of the support frame 1. Under the elastic force of the second spring 20, the support seat 16 will move accordingly. Finally, the multiple pressure rollers 17 will come into contact with the asphalt mixture, and the second spring 20 will be compressed. As the second spring 20 is compressed to different degrees, different elastic forces will be generated. Then, under the action of the reaction force, different rolling pressures will be generated. This makes it easy to adjust the rolling pressure so that asphalt mixtures with different proportions can be rolled. At the same time, the second annular pressure sensor 19 can detect the elastic force generated by the deformation of the second spring 20, thereby making it easy to control the magnitude of the rolling pressure. Finally, controlling the linear slide table 11 will drive the moving frame 12 to move along the length direction of the support frame 1. Ultimately, this drives multiple rollers 17 to move laterally, completing the compaction of the asphalt mixture.

[0047] Optionally, combined Figure 1 , Figure 2 and Figure 4 As shown, it also includes a third optical axis 21. The third optical axis 21 is slidably inserted through the movable frame 12 along the height direction of the support frame 1 and is connected to the second movable plate 14.

[0048] In this embodiment, the third optical axis 21 serves as a guide and support to improve the stability of the second moving plate 14 during movement and reduce the radial force on the moving end of the second electric push rod 13.

[0049] Optionally, combined Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, it also includes a third linear bearing 22. The third linear bearing 22 is slidably mounted on the third optical axis 21 and installed on the movable frame 12.

[0050] In this embodiment of the disclosure, the third linear bearing 22 is used to reduce the friction between the third optical axis 21 and the moving frame 12, and to improve the accuracy of the third optical axis 21 when sliding relative to the moving frame 12.

[0051] Optionally, combined Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, it also includes a second linear bearing 23. The second linear bearing 23 is slidably mounted on the second optical axis 15 and installed on the second movable plate 14.

[0052] In this embodiment of the disclosure, the second linear bearing 23 is used to reduce the friction between the second optical axis 15 and the second moving plate 14, and to improve the accuracy of the second optical axis 15 when sliding relative to the second moving plate 14.

[0053] Optionally, combined Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, it also includes a first metal gasket 24. The first metal gasket 24 is fitted onto the second optical axis 15 and is located at the contact point between the second spring 20 and the support base 16 and the second annular pressure sensor 19.

[0054] In this embodiment of the disclosure, the second metal gasket 32 ​​serves as a protective element to prevent wear and damage at the contact points between the support base 16 and the second annular pressure sensor 19 and the second spring 20.

[0055] Optionally, combined Figure 1 , Figure 3 , Figure 6 and Figure 7 As shown, the system also includes a linear guide rail 25, a slider 26, and a guide rail clamp 27. The linear guide rail 25 is mounted along the length of the support frame 1 on the first support plate 01 and below the second support plate 02 and the third support plate 03, supporting the slidable slider 26. The slider 26 is slidably mounted on the linear guide rail 25 and connected to the mold placement plate 10, moving synchronously with it. The guide rail clamp 27 is mounted on the mold placement plate 10 and is used to clamp or release the linear guide rail 25.

[0056] In this embodiment, the linear guide rail 25 and the slider 26 serve as guides and supports, allowing the mold placement plate 10 to move along the length of the support frame 1. The guide rail clamp 27 clamps or releases the linear guide rail 25. When the guide rail clamp 27 releases the linear guide rail 25, the position of the mold placement plate 10 can be adjusted. When the guide rail clamp 27 clamps the linear guide rail 25, the position of the mold placement plate 10 can be fixed, thereby completing the position adjustment of the mold placement plate 10.

[0057] Optionally, combined Figure 1 and Figure 3 As shown, it also includes limiting pieces 28. The limiting pieces 28 are respectively installed at both ends of the linear guide rail 25.

[0058] In this embodiment, the limiting piece 28 is used to limit the slider 26 from falling off the linear guide rail 25.

[0059] Optionally, combined Figure 1 and Figure 6As shown, it also includes a fourth optical axis 29. The fourth optical axis 29 is slidably inserted through the second support plate 02 along the height direction of the support frame 1 and is connected to the first movable plate 8.

[0060] In this embodiment, the fourth optical axis 29 serves as a guide and support to improve the stability of the first moving plate 8 during movement and reduce the radial force on the moving end of the first electric push rod 7.

[0061] Optionally, combined Figure 1 and Figure 6 As shown, it also includes a fourth linear bearing 30. The fourth linear bearing 30 is slidably mounted on the fourth optical axis 29 and installed on the second support plate 02.

[0062] In this embodiment of the disclosure, the fourth linear bearing 30 is used to reduce the friction between the fourth optical axis 29 and the second support plate 02, and to improve the accuracy of the fourth optical axis 29 when sliding relative to the second support plate 02.

[0063] Optionally, combined Figure 1 and Figure 6 As shown, it also includes a first linear bearing 31. The first linear bearing 31 is slidably mounted on the first optical axis 2 and installed on the second support plate 02.

[0064] In this embodiment of the disclosure, the first linear bearing 31 is used to reduce the friction between the first optical axis 2 and the second support plate 02, and to improve the accuracy of the first optical axis 2 sliding relative to the second support plate 02.

[0065] Optionally, combined Figure 1 , Figure 3 and Figure 6 As shown, it also includes a second metal gasket 32. The second metal gasket 32 ​​is fitted onto the first optical axis 2 and is located at the contact point between the first spring 6 and the pressure plate 3 and the first annular pressure sensor 5.

[0066] In this embodiment of the disclosure, the second metal gasket 32 ​​serves as a protective element to prevent wear and damage at the contact points between the pressure plate 3 and the first annular pressure sensor 5 and the first spring 6.

[0067] Optionally, combined Figure 1 and Figure 6 As shown, it also includes a clamping plate 33. The clamping plates 33 are respectively installed on the two moving ends of the thumb cylinder 9.

[0068] In this embodiment of the present disclosure, both clamping plates 33 are used to clamp the clamping block 4 to increase the friction between them and the clamping block 4, thereby improving the clamping effect.

[0069] Optionally, combined Figure 1 and Figure 6As shown, it also includes a second limiting ring 34. The second limiting ring 34 is installed at the other end of the first optical axis 2.

[0070] In this embodiment, the second limiting ring 34 is used to limit the movement of the first optical axis 2 from the first linear bearing 31 and the second support plate 02.

[0071] Optionally, a heating wire and a temperature sensor are also included. The heating wire is located inside the pressure plate 3. The temperature sensor is mounted on the surface of the pressure plate 3.

[0072] In this embodiment of the disclosure, a heating wire is used to heat the pressure plate 3, and a temperature sensor is used to detect the temperature of the pressure plate 3, so that the temperature of the contact surface between the pressure plate 3 and the asphalt mixture is consistent with the test temperature of the asphalt mixture to be tested.

[0073] Combination Figure 1 As shown, in some embodiments, such as Figure 8 As shown, an asphalt mixture compaction method is provided, which includes:

[0074] S802, fix the asphalt mixture mold to the mold placement plate, and then adjust the position of the mold placement plate so that the pressure plate can be pressed into the interior of the asphalt mixture mold.

[0075] S804, the mixed asphalt mixture is laid into the interior of the asphalt mixture mold, and is higher than the four edges of the asphalt mixture mold.

[0076] S806 controls the pressure plate to press the asphalt mixture into the asphalt mixture mold a preset number of times and at a preset pressure.

[0077] S808, readjust the position of the test mold placement plate again, so that the pressed asphalt mixture can be moved to a position where it can be crushed by multiple rollers.

[0078] S810 controls multiple rollers to compact the asphalt mixture a preset number of times and a preset pressure.

[0079] The compaction method provided in this disclosure can select different compaction forces and compaction pressures according to different proportions of asphalt mixtures in order to improve the molding effect.

[0080] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An asphalt mixture compaction device, characterized in that, include: A support frame includes a first support plate and a second support plate that are parallel to each other in their planes. Along the height direction of the support frame, the second support plate is located above the first support plate. The support frame also includes a third support plate and a support rod. The plane of the third support plate is parallel to the plane of the first support plate. Along the length direction of the support frame, the third support plate and the second support plate are located on both sides of the support frame. The support rod is installed between the first support plate, the second support plate, and the third support plate. The first optical axis is slidably inserted through the second support plate along the height direction of the support frame; A pressure plate is installed at one end of the optical axis and is located between the opposing surfaces of the first support plate and the second support plate. The plane of the pressure plate is parallel to the plane of the first support plate. Clamping block, installed on the pressure plate; A first annular pressure sensor is sleeved on the first optical axis, installed on the second support plate, and located between the opposite surfaces of the first support plate and the second support plate; A first spring is fitted onto the first optical axis and is located between the pressure plate and the first annular pressure sensor; A first electric push rod is mounted on the second support plate along the height direction of the support frame, with the moving end of the first electric push rod facing the first support plate; The first movable plate is installed on the movable end of the first electric push rod; A thumb cylinder, mounted on the first movable plate, is used to clamp or release the clamping block; A mold placement plate is slidably mounted on the first support plate and located between the opposite surfaces of the first support plate and the second support plate, for supporting and placing asphalt mixture molds; A linear slide is installed on the third support plate along the length of the support frame, and is located between the opposite surfaces of the third support plate and the first support plate; A movable frame is installed on the movable end of the linear slide table; The second electric push rod is installed on the movable frame along the height direction of the support frame, and the movable end of the second electric push rod faces the first support plate; The second movable plate is installed at the movable end of the second electric push rod; The second optical axis is slidably inserted through the second movable plate along the height direction of the support frame; A support base is installed at one end of the second optical axis; The pressure rollers are rotatably mounted on the support base along the width direction of the support frame and are evenly distributed on the support base along the length direction of the support frame. The first limiting ring is installed at the other end of the second optical axis; The second annular pressure sensor is sleeved on the second optical axis, installed on the movable plate, and located between the movable plate and the support base; The second spring is fitted onto the second optical axis and is located between the second annular pressure sensor and the support base; Under the elastic force of the first spring, the pressure plate can abut against the asphalt mixture laid inside the asphalt mixture mold. Under the drive of the second electric push rod, multiple pressure rollers can abut against the asphalt mixture laid inside the asphalt mixture mold. The second annular pressure sensor detects the elastic force generated by the deformation of the second spring, which facilitates the control of the rolling pressure.

2. The asphalt mixture compaction device according to claim 1, characterized in that, Also includes: The third optical axis is slidably inserted through the movable frame along the height direction of the support frame and is connected to the second movable plate.

3. The asphalt mixture compaction device according to claim 1, characterized in that, Also includes: The first metal gasket is fitted onto the second optical axis and is located at the contact point between the second spring and the support base and the second annular pressure sensor.

4. The asphalt mixture compaction device according to claim 1, characterized in that, Also includes: A linear guide rail is installed on the first support plate along the length of the support frame and is located below the second and third support plates; A slider is slidably mounted on the linear guide rail and connected to the mold placement plate; A guide rail clamp is installed on the test mold placement plate and is used to clamp or release the linear guide rail.

5. An asphalt mixture compaction device according to claim 4, characterized in that, Also includes: Limiting plates are respectively installed at both ends of the linear guide rail.

6. An asphalt mixture compaction device according to any one of claims 1 to 5, characterized in that, Also includes: The fourth optical axis is slidably inserted through the second support plate along the height direction of the support frame and is connected to the first movable plate.

7. An asphalt mixture compaction device according to any one of claims 1 to 5, characterized in that, Also includes: The second metal gasket is fitted onto the first optical axis and is located at the contact point between the first spring, the pressure plate, and the first annular pressure sensor.

8. A method for compacting asphalt mixtures, characterized in that, The asphalt mixture compaction apparatus as described in any one of claims 1 to 7, wherein the asphalt mixture compaction method comprises: The asphalt mixture mold is fixed to the mold placement plate, and then the position of the mold placement plate is adjusted so that the pressure plate can be pressed into the interior of the asphalt mixture mold. The mixed asphalt mixture is laid into the interior of the asphalt mixture mold, and is higher than the four edges of the asphalt mixture mold; The pressure plate is controlled to press the asphalt mixture into the asphalt mixture mold a preset number of times and at a preset pressure. The position of the test mold placement plate is readjusted so that the pressed asphalt mixture is moved to a position where it can be crushed by the multiple pressure rollers. Multiple pressure rollers are controlled to compact the asphalt mixture a preset number of times and at a preset pressure.

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