A drying and mixing equipment for recycled asphalt mixture

Abstract

A drying and mixing device for recycled asphalt mixture comprises: an outer cylinder, an inner cylinder, multiple box bodies, and multiple lifting plate assemblies; the inner cylinder is rotatably connected to the outer cylinder, and an arc-shaped rack is provided at the bottom; multiple box bodies are arranged on the inner wall of the outer cylinder, and a lifting plate assembly is arranged inside each box body, and each lifting plate assembly comprises: a driving shaft and a lifting plate, the driving shaft passes through the box body, a first driving gear is sleeved on one end, and a force storage release assembly is configured, the first driving gear is meshed with the arc-shaped rack, and one end of the lifting plate is connected to the driving shaft, when the first driving gear moves on the arc-shaped rack, the driving shaft stores force through the force storage release assembly, so that the lifting plate approaches the bottom of the box body, when the outer cylinder continues to rotate until the first driving gear leaves the arc-shaped rack, the force storage release assembly releases energy, and the lifting plate ejects the asphalt mixture in the box body, which not only ensures that the scattered asphalt mixture can be more fully in contact with the hot air in the outer cylinder, but also improves the mixing uniformity of the asphalt mixture.

Description

Technical Field

[0001] The invention relates to the technical field of recycled asphalt, in particular to a drying and stirring device for recycled asphalt mixture. Background Art

[0002] Recycled asphalt refers to materials that are processed and reused through physical or chemical methods. It can reduce environmental pollution, save resources, and extend the service life of asphalt pavement. In recent years, research on recycled asphalt in the field of materials science has focused on improving its performance, exploring new recycling technologies, and improving recycling processes. In the production process of recycled asphalt, drying is a key step. Its main function is to remove moisture and volatile substances from the asphalt mixture to ensure the quality and performance of the recycled asphalt. For example: by drying to remove moisture, the performance of asphalt can be prevented from deteriorating due to moisture during subsequent processing and use, and the adhesion of asphalt can be improved; the aging components in asphalt will recover to a certain extent under high temperature, thereby improving the overall performance of the recycled asphalt and restoring the aging characteristics of the asphalt.

[0003] The recycled asphalt drying drum is a key component of the asphalt recycling equipment. It is responsible for heating and drying the recycled asphalt mixture. In the recycled asphalt production process, the drying drum is generally arranged horizontally. The rotating movement of the drying drum allows the asphalt mixture to fully contact with the hot air inside, thereby removing the moisture and volatile substances in it, ensuring the quality and performance of the recycled asphalt.

[0004] Since the lifting plates inside the drying drum of the existing horizontal drying and mixing equipment are fixedly arranged on the inner wall of the drying drum, the asphalt mixture in the drying drum can only be lifted up in the drying drum according to the lifting plates set by the rotation and inclination of the drying drum, and it is difficult to achieve a more dispersed lifting effect on the asphalt mixture, resulting in limited contact area between the asphalt mixture and the hot air in the drying drum. Summary of the invention

[0005] The purpose of the present invention is to provide a drying and stirring device for recycled asphalt mixture, which can lift and disperse the asphalt mixture in the drying drum, so that the asphalt mixture particles are fully in contact with the hot air in the drying drum, which can not only improve the drying effect but also improve the mixing uniformity between the asphalt mixtures.

[0006] The technical solution of the present invention is:

[0007] A drying and mixing device for recycled asphalt mixture comprises: an outer cylinder, which is driven by a driving device and is rotatably arranged on a prefabricated frame, one end of the inner wall of the outer cylinder is configured as a step surface, and the inner diameter of a section of the step surface of the outer cylinder is larger than the inner diameter of a middle section; an inner cylinder, which is sleeved in a section of the step surface of the outer cylinder, the inner cylinder is fixed on the prefabricated frame and is rotatably connected to the outer cylinder, and an arc-shaped rack is arranged at the bottom of the inner wall of the inner cylinder; a plurality of box bodies are arranged on the inner wall of the middle section of the outer cylinder; a plurality of lifting plate assemblies are correspondingly arranged on each box body, and each lifting plate assembly comprises: a driving shaft, which passes through the box wall of the box body along the length direction of the outer cylinder, and the driving shaft is located at a section outside the box body A first driving gear is sleeved on the end, and the first driving gear is meshed with the tooth groove surface of the arc-shaped rack. The first driving gear rolls along the arc-shaped rack through the rotation of the outer cylinder, thereby driving the driving shaft to rotate; a power storage release component is connected to the driving shaft, and completes energy storage through the rotation of the driving shaft, and releases the stored kinetic energy after the first driving gear leaves the arc-shaped rack, so that the driving shaft rotates in the opposite direction; a lifting plate is connected to the driving shaft and rotates in the box body with the driving shaft as the axis, and the lifting plate is configured with two states, one of which is to approach the bottom of the box body through the forward rotation of the driving shaft; the other is to rotate toward the box mouth of the box body through the reverse rotation of the driving shaft to lift out the mixed material in the box body.

[0008] Furthermore, in order to prevent the box body from tilting when the box body rotates to a position close to the middle height of the outer cylinder, causing the material above the box body to scatter, the plane where the box mouth of each box body is located is inclined, and the drive shaft is arranged on the lower side of the box body, and the lower end is the front end.

[0009] Furthermore, in order to make the lifting plate fit the bottom of the box body more closely as a whole, the lifting plate includes: a driving plate, one end of which is connected to the driving shaft; a driven plate, which is connected to the driving plate via a rotating shaft, and the rotating shaft is equipped with a torsion spring for resetting the rotating shaft.

[0010] Furthermore, a plurality of the driven plates are provided, and the plurality of driven plates are connected via a rotating shaft.

[0011] Furthermore, in order to reduce the use cost of the force storage and release component, the force storage and release component is designed as a mechanical energy storage clockwork structure, the box body is provided with a cavity in the box wall of the drive shaft, and the force storage and release component is arranged in the cavity, including: a clockwork box; a clockwork shaft, which passes through the clockwork box and is located at the central axis position of the clockwork box, and a clockwork driving gear is provided at one end; a spring, a spiral metal torsion spring, which is arranged around the clockwork shaft, and its two ends are respectively connected to the clockwork shaft and the clockwork box, and is tightened and relaxed in the clockwork box by the rotation of the clockwork shaft; a driven gear, which is sleeved on the drive shaft and meshes with the clockwork driving gear.

[0012] Furthermore, it also includes: a limit bar, which is arranged on the inner wall of the box body away from the driving shaft and close to the top; a sleeve, which is sleeved on the driving shaft, and one end of the sleeve is fixed on the inner wall of the box body; a limit block is fixedly connected to the sleeve, which is used to limit the pop-up angle of the driving plate, and when the box body is rotated to the highest position, the box mouth faces downward. At this time, the limit block and the limit bar are required to limit the driving plate and the driven plate inside the box body, so as to facilitate the energy storage behind the driving shaft. When the driving shaft releases energy, the driving plate hits the limit block to generate vibration, which shakes off the asphalt mixture retained on the driving plate and the driven plate.

[0013] Furthermore, in order to avoid the influence of asphalt mixture on the arc-shaped rack, the arc-shaped rack is arranged on the outer wall of the bottom of the inner tube, and also includes: a gear bracket, which is fixed to the box body through a fixing part, and the gear shaft of the first driving gear is connected to the gear bracket; a transmission gear, whose gear shaft is connected to the gear bracket, and the transmission gear is meshed with the first driving gear; a second driving gear, which is sleeved on the gear shaft of the transmission gear, and the second driving gear is meshed with the tooth groove surface of the arc-shaped rack.

[0014] Furthermore, the multiple boxes are divided into multiple columns, the driving shafts on the multiple boxes in each column are aligned and connected, and the multiple boxes in two adjacent columns are staggered, thereby improving the dispersion effect of the multiple boxes in the outer cylinder on the asphalt mixture.

[0015] Furthermore, a first scraper is provided on the side of the driving plate and the driven plate, and a second scraper is provided on the end of the driven plate away from the driving plate. The first scraper and the second scraper respectively correspond to the inner wall of one side of the box body and abut against the corresponding inner wall, so that the asphalt mixture on the inner wall of the box body can be scraped off when the driving plate and the driven plate swing.

[0016] Furthermore, it includes multiple chains, one end of each of which is connected to the side of the box body away from the drive shaft near the bottom. Through the rotation of the outer cylinder and the self-gravity of the chain, its sliding direction is changed to clean the outside of the box body and the inner wall of the outer cylinder.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention arranges an inner cylinder inside an outer cylinder, and provides an arc-shaped rack at the bottom of the inner cylinder, arranges a plurality of boxes on the inner side surface of the outer cylinder, and configures a lifting plate assembly on each box. When the outer cylinder starts to rotate to allow the box to approach the bottom position of the outer cylinder, the driving shaft stores energy through the first driving gear and the arc-shaped rack, and drives the lifting plate to approach the bottom of the box, leaving space for receiving asphalt mixture scattered from the upper position and storing the asphalt mixture. When the outer cylinder continues to rotate until the first driving gear on the box leaves the arc-shaped rack, the energy storage release assembly releases energy, thereby driving the lifting plate to pop up, and the mixture stored in the box is popped up and scattered, which not only ensures that the scattered asphalt mixture can be more fully in contact with the hot air in the outer cylinder, but also improves the mixing uniformity of the asphalt mixture.

[0019] The present invention designs the lifting plate into a multi-section structure, so that the lifting plate can fit more closely to the bottom of the box body when the driving shaft accumulates power, and when the driving shaft releases energy and rotates, the driving plate and multiple driven plates are driven to pop up, thereby ejecting the asphalt mixture on the driving plate and the driven plate.

[0020] The present invention uses a limit bar and a limit block. When the box opening of the box body faces downward, the limit block and the limit bar limit the driving plate and the driven plate inside the box body, thereby facilitating energy storage behind the driving shaft. When the driving shaft releases energy, the driving plate hits the limit block, and the driven plate hits the limit bar, which can generate vibrations and shake off the asphalt mixture retained on the driving plate and the driven plate.

[0021] The present invention divides multiple boxes into multiple columns, and multiple boxes on two adjacent columns are staggered, which can ensure that the asphalt mixture in the outer cylinder is lifted and scattered from more positions, which not only improves the drying effect, but also makes the asphalt mixture mixed more evenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the main structure of the present invention.

[0023] Figure 2 It is a front view of a schematic diagram of the internal structure of multiple boxes in the outer cylinder of the present invention.

[0024] Figure 3 for Figure 1 An enlarged view of the structural schematic diagram of the middle A area.

[0025] Figure 4 for Figure 2 An enlarged view of the schematic diagram of the structure of the middle B area.

[0026] Figure 5 for Figure 2 An enlarged view of the structural schematic diagram of the middle C area.

[0027] Figure 6 It is a schematic diagram of the internal structure of the box body of the present invention.

[0028] Figure 7 for Figure 6 An enlarged view of the structural schematic diagram of the middle D area.

[0029] Figure 8 It is a schematic diagram of the internal structure of the power storage and release component of the present invention.

[0030] Fig. 9 It is a schematic diagram of the arrangement structure of multiple box bodies in the outer cylinder of the present invention.

[0031] Fig.10 It is a schematic diagram of the cable chain structure of the present invention.

[0032] Fig.11 It is a schematic diagram of the structure of the lifting plate of the present invention.

[0033] Fig.12 Schematic diagram of the structure of the gear bracket and the arc-shaped rack in Example 2 of the present invention.

[0034] Among them, 1. outer cylinder, 11. gear ring, 12. driver, 2. box body, 21. limit bar, 3. inner cylinder, 31. arc-shaped rack, 4. driving shaft, 41. first driving gear, 42. driven gear, 5. lifting plate, 51. driving plate, 52. driven plate, 53. rotating shaft, 54. first scraper, 55. second scraper, 56. limit block, 6. power storage release component, 61. spring box, 62. spring shaft, 621. spring driving gear, 63. spring, 7. chain, 8. gear bracket, 81. fixing part, 9. transmission gear, 91. second driving gear. DETAILED DESCRIPTION

[0035] Combine the following Figures 1 to 12 , the specific embodiments of the present invention are described in detail. In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0036] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0037] It should be noted that the conditions for generating hot air in the prefabricated frame, the driver and the drying device involved in the present invention do not involve any innovation.

[0038] Example 1

[0039] like Figure 1 and Figure 2 As shown, a drying and mixing device for recycled asphalt mixture comprises: an outer cylinder 1, an inner cylinder 3, a plurality of box bodies 2, and a plurality of lifting plate assemblies. The outer cylinder 1 is driven by a driving device. One end of the inner wall of the outer cylinder 1 is configured as a step surface. The inner diameter of a section of the step surface of the outer cylinder 1 is larger than the inner diameter of a middle section of the outer cylinder 1. The middle section refers to the inner wall of the outer cylinder 1 excluding a section of the step surface, and one end of the step surface and the inner wall of the middle section are both straight. When feeding, the recycled asphalt mixture is directly input into the middle section of the outer cylinder 1 through a conveying pipe. The driving device comprises: a driver 12 and a gear ring 11. The gear ring 11 is sleeved on the outer cylinder 1. The driver 12 comprises a motor and a gear sleeved on the output shaft of the motor. The gear and the gear ring 11 are meshed. The motor is driven by electricity. The output shaft of the machine rotates to make the outer cylinder 1 rotate and is arranged on the prefabricated frame. The outer cylinder 1 is provided with a heating device outside for drying the asphalt mixture in the outer cylinder 1; the inner cylinder 3 is sleeved in a section of the step surface provided on the outer cylinder 1. The cylinder body of the inner cylinder 3 is shorter and is located at the cylinder mouth position at one end of the outer cylinder 1. The inner cylinder 3 is fixed on the prefabricated frame and is rotatably connected with the outer cylinder 1. That is, when the outer cylinder 1 rotates, the inner cylinder 3 remains stationary. An arc-shaped rack 31 is provided at the bottom position of the inner wall of the inner cylinder 3 and is fitted with the curvature of the inner wall of the inner cylinder 3; a plurality of box bodies 2 are provided on the inner side surface of the middle section of the outer cylinder 1. The box body 2 has a box mouth, which is opened on the side of the box body 2 close to the central axis of the outer cylinder 1; each box body 2 is provided with a lifting plate assembly, such as Figure 3 and Figure 4 As shown, each lifting plate assembly includes: a driving shaft 4, a force-storage release assembly 6 and a lifting plate 5. The driving shaft 4 passes through the box wall of the box body 2 along the length direction of the outer cylinder 1. The first driving gear 41 is sleeved on one end of the driving shaft 4 located outside the box body 2, and the driving shaft 4 is provided with a force-storage release assembly 6. The first driving gear 41 meshes with the tooth groove surface of the arc-shaped rack 31. One end of the lifting plate 5 is connected to the driving shaft 4. Taking one of the box bodies 2 as an example, when the outer cylinder 1 starts to rotate, so that this box body 2 is close to the bottom position of the outer cylinder 1, the first driving gear 41 thereon starts to pass through the arc-shaped rack 31, and through the meshing of the first driving gear 41 and the arc-shaped rack 31, the driving shaft 4 rotates, so that the lifting plate 5 starts to approach the bottom of the box body 2 and abuts against the inner bottom surface of the box body 2, so that the driving shaft 4 accumulates force through the force-storage release assembly 6 arranged thereon, as shown in FIG. Figure 4 As shown in FIG. 1 , when the driving shaft 4 accumulates power, the lifting plate 5 moves closer to the bottom of the box body 2, leaving space for receiving the asphalt mixture scattered from the upper position and storing the asphalt mixture. When the outer cylinder 1 continues to rotate until the first driving gear 41 on the box body 2 leaves the arc-shaped rack 31, that is, Figure 2 The lifting plates 5 inside the four box bodies 2 located above the outer cylinder 1 are in the state, and the force release component 6 releases energy, thereby driving the lifting plates 5 to pop up and eject the asphalt mixture stored in the box body 2 from the box mouth. After the box body 2 exceeds the middle position of the outer cylinder 1, the asphalt mixture will scatter from the box mouth due to the inclination of the box body 2. In order to prevent the box body 2 from failing to eject the asphalt mixture due to this reason, when designing the length of the arc-shaped rack 31, it should be ensured that both ends of the arc-shaped rack 31 are lower than the middle height position of the outer cylinder 1, so that the box body 2 can eject all the internal materials before reaching the middle height position of the outer cylinder 1, which not only ensures that the scattered asphalt mixture can be more fully in contact with the hot air in the outer cylinder 1, but also improves the mixing uniformity of the asphalt mixture.

[0040] In order to prevent the box body 2 from tilting when the outer cylinder 1 rotates the box body 2 to the middle height position, so that the asphalt mixture located at the upper part of the box body 2 is scattered, Figure 1 and Figure 2 As shown, the plane where the box opening of each box body 2 is located is inclined, the drive shaft 4 is arranged on the lower side of the box body 2, and the lower end side of the box body 2 is the front end, as shown in FIG. Figure 2 As shown, when the outer cylinder 1 rotates, since the height of the box body at the front end is relatively low, the spillage of the asphalt mixture is reduced during the rising process of the box body 2.

[0041] like Figure 2 and Fig.11 As shown, the lifting plate 5 includes: a driving plate 51 and a driven plate 52, one end of the driving plate 51 is connected to the driving shaft 4; the driven plate 52 is connected to the driving plate 51 through a rotating shaft 53, and the rotating shaft 53 is provided with a torsion spring for resetting the rotating shaft 53, limiting the angle of the torsion spring to prevent the driven plate from being unable to bounce up. When the driving shaft 4 starts to accumulate force, the driven plate 52 and the driving plate 51 will abut against and fit on the bottom surface of the box body 2 after the driving shaft 4 rotates, and the torsion spring configured on the rotating shaft 53 on the driven plate 52 stores energy. When the driving shaft 4 continues to rotate, the abutment effect of the driving plate 51 causes the force storage release component 6 to start storing energy until the first driving gear 41 leaves the arc-shaped rack 31, and the driving shaft 4 rotates through the energy release of the force storage release component 6, and drives the driving plate 51 and the driven plate 52 to bounce up, and the asphalt mixture located on the driving plate 51 and the driven plate 52 is ejected.

[0042] like Fig.11 As shown, in order to make the lifting plate 5 fit the bottom of the box body 2 more closely as a whole, a plurality of driven plates 52 are provided, and the plurality of driven plates 52 are connected by a rotating shaft 53. In order to protect the rotating shaft 53 and the driving shaft 4, a sealing layer can be laid on the lifting plate 5 to prevent asphalt particles from entering the rotating shaft 53 and the driving shaft 4.

[0043] In such Figure 6 , Figure 7 and Figure 8 In the embodiment shown, the box body 2 is provided with a cavity in the box wall of the driving shaft 4, and the power storage release assembly 6 is arranged in the cavity, including: a spring box 61, a spring shaft 62, a spring 63 and a driven gear 42; the spring box 61 is used to fix the spring 63 and the spring shaft 62, protect the internal structure, and allow the spring 63 to be wound and relaxed, and the spring box 61 is provided with a cover body for closing the spring box 61 to prevent asphalt particles from entering; the spring shaft 62 passes through the spring box 61 and is located at the central axis position of the spring box 61, and a spring driving gear 621 is provided at one end; the spring 63 of this embodiment is a spiral metal torsion spring, and its elastic force and torsion are designed to be sufficient to eject the asphalt mixture at the moment of its release, such as Figure 8 As shown, the mainspring 63 is arranged around the mainspring shaft 62, and its two ends are respectively connected to the mainspring shaft 62 and the mainspring box 61, and is tightened and relaxed in the mainspring box 61 through the rotation of the mainspring shaft 62; the driven gear 42 is sleeved on the driving shaft 4, and rotates with the rotation of the driving shaft 4, and the driven gear 42 is meshed with the mainspring driving gear 621. In order to ensure the driving effect of the force storage release component 6 on the driving shaft 4, multiple force storage release components 6 can be set for one driving shaft.

[0044] like Figure 5 and Fig.11 In the embodiment shown, the drying and mixing device further includes: a limit strip 21 and a limit block 56. The limit strip 21 is arranged at a position near the top of the inner wall of the box body 2 away from the driving shaft 4, and after the driven plate 52 touches the limit strip 21 on the box body 2, the impact generates vibration, thereby causing the asphalt mixture sticking to the driven plate 52 to fall off; a sleeve is sleeved on the driving shaft 4, one end of the sleeve is fixed on the inner wall of the box body 2, and the limit block 56 is fixedly connected to the sleeve to limit the pop-up angle of the driving plate 51. Since the driving shaft 4 rotates at a large angle when storing energy, the rotation angle of the driving shaft 4 when releasing energy may cause the lifting plate 5 to exceed the box opening of the box body 2, and when the box body 2 rotates to the highest position, the box opening faces downward. At this time, the limit block 56 and the limit bar 21 are required to limit the driving plate 51 and the driven plate 52 inside the box body 2, so as to facilitate the energy storage behind the driving shaft 4, and when the driving shaft 4 releases energy, the impact on the limit block 56 can generate vibration, which can shake off the asphalt mixture retained on the driving plate 51 and the driven plate 52.

[0045] like Fig. 9As shown, in order to improve the dispersion effect of the multiple box bodies 2 in the outer cylinder 1 on the asphalt mixture, the multiple box bodies 2 are divided into multiple columns, and the driving shafts 4 on the multiple box bodies 2 in each column are aligned and connected. The connected driving shaft 4 only needs to be sleeved with a first driving gear 41 on the end close to the inner cylinder 3 where the arc-shaped rack 31 is provided. Through the engagement of the first driving gear 41 and the arc-shaped rack 31, the entire connected driving shaft 4 is rotated, and the energy storage of the force release assembly 6 on the multiple box bodies 2 in this column is realized by the rotation of the entire driving shaft 4. The multiple box bodies 2 on two adjacent columns are staggered, which can ensure that the asphalt mixture in the outer cylinder 1 is lifted and scattered from more positions, which not only improves the drying effect, but also makes the asphalt mixture mixed more evenly.

[0046] In some embodiments, Figure 5 , Figure 6 and Fig.11 As shown, a first scraper 54 is provided on the side of the driving plate 51 and the driven plate 52, and a second scraper 55 is provided on the end of the driven plate 52 away from the driving plate 51. The first scraper 54 and the second scraper 55 respectively correspond to the inner wall of one side of the box body 2 and abut against the corresponding inner wall, so as to scrape the asphalt mixture on the inner wall of the box body 2 when the driving plate 51 and the driven plate 52 swing.

[0047] like Fig.10 As shown, in order to clean the outside of the box body 2 and the inner wall of the outer cylinder 1, a plurality of chains 7 are also included. Each box body 2 is provided with a chain 7. One end of each chain 7 is connected to the side of the box body 2 away from the driving shaft 4 and close to the bottom. When the outer cylinder 1 starts to rotate, Fig.10 As shown, taking the box body 2 at the bottom as an example, when it rises from the bottom, the chain 7 is used to slide downward along the inner wall of the outer cylinder 1 due to the action of gravity, thereby cleaning the inner wall of the outer cylinder 1. When it rises to the upper right, the chain 7 falls on the outer wall of the box body 2 due to gravity. The outer cylinder 1 continues to rotate, and after it rotates to the lower right, the chain 7 slides from the outer wall of the box body 2 due to gravity, thereby cleaning the outer wall of the side of the box body 2 where the asphalt mixture is easily accumulated. This can effectively prevent the asphalt mixture from accumulating on the inner wall of the outer cylinder 1 and the outer wall of the box body 2, causing the problem of difficulty in cleaning later.

[0048] Example 2

[0049] The difference from Example 1 is that, in order to avoid the influence of the asphalt mixture on the arc-shaped rack 31, in this embodiment, one end of the inner cylinder 3 exceeds the cylinder wall of the outer cylinder 1, and the arc-shaped rack 31 of the inner cylinder 3 is arranged on the outer wall of the bottom of the inner cylinder 3, and the first driving gear 41 and the arc-shaped rack 31 are meshed and driven by a gear assembly, and the gear assembly includes: a gear bracket 8, a transmission gear 9 and a second driving gear 91, and the gear bracket 8 is fixed to the box body 2 by a fixing member 81. The material properties and fixing effect of the fixing member 81 can meet the energy storage process of the drive shaft 4, such as Fig.12 As shown, the gear shaft of the first driving gear 41 is connected to the gear bracket 8; the gear shaft of the transmission gear 9 is connected to the gear bracket 8, and the transmission gear 9 is meshed with the first driving gear 41; the second driving gear 91 is sleeved on the gear shaft of the transmission gear 9, and the second driving gear 91 is meshed with the tooth groove surface of the arc rack 31.

[0050] The above disclosures are only several preferred specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A drying and mixing device for recycled asphalt mixture, characterized in that: include: The outer cylinder (1) is driven by a driving device and is rotatably arranged on the prefabricated frame, one end of the inner wall of the outer cylinder (1) is configured as a step surface, and the inner diameter of a section of the step surface of the outer cylinder (1) is larger than the inner diameter of a middle section; The inner cylinder (3) is sleeved in a section of the stepped surface of the outer cylinder (1). The inner cylinder (3) is fixed on the prefabricated frame and is rotatably connected to the outer cylinder (1). An arc-shaped rack (31) is provided at the bottom of the inner wall of the inner cylinder (3); A plurality of box bodies (2) are arranged on the inner wall of the middle section of the outer cylinder (1); A plurality of lifting plate assemblies are respectively arranged on corresponding box bodies (2), and each lifting plate assembly comprises: A driving shaft (4) passes through the box wall of the box body (2) along the length direction of the outer cylinder (1); a first driving gear (41) is sleeved on one end of the driving shaft (4) located outside the box body (2); the first driving gear (41) is meshed with the tooth groove surface of the arc-shaped rack (31); the first driving gear (41) rolls along the arc-shaped rack (31) through the rotation of the outer cylinder (1), thereby driving the driving shaft (4) to rotate; A power storage release assembly (6) is connected to the drive shaft (4), stores energy through the rotation of the drive shaft (4), and releases the stored kinetic energy after the first drive gear (41) leaves the arc-shaped rack (31), so that the drive shaft (4) rotates in the opposite direction; The material raising plate (5) is connected to the driving shaft (4) and rotates in the box body (2) with the driving shaft (4) as the axis. The material raising plate (5) is configured in two states: one is that the driving shaft (4) rotates forward to approach the bottom of the box body (2); the other is that the driving shaft (4) rotates reversely to raise the mixed material in the box body (2); The box body (2) is provided with a cavity in a box wall on which a driving shaft (4) is provided, and the force storage release component (6) is arranged in the cavity, comprising: barrel (61); A spring shaft (62) passes through the spring box (61) and is located at the central axis of the spring box (61), and one end of the spring shaft is provided with a spring driving gear (621); The spring (63) is a spiral metal torsion spring, which is arranged around the spring shaft (62), with two ends respectively connected to the spring shaft (62) and the spring box (61), and is tightened and relaxed in the spring box (61) by the rotation of the spring shaft (62); The driven gear (42) is sleeved on the driving shaft (4) and meshes with the mainspring driving gear (621).

2. The drying and mixing equipment for recycled asphalt mixture according to claim 1, characterized in that: The plane on which the box opening of each box body (2) is located is inclined, the drive shaft (4) is arranged on the lower side surface of the box body (2), and the lower end side surface of the box body (2) is the front end.

3. The drying and mixing equipment for recycled asphalt mixture according to claim 1, characterized in that: The lifting plate (5) comprises: A driving plate (51), one end of which is connected to the driving shaft (4); The driven plate (52) is connected to the driving plate (51) via a rotating shaft (53), and the rotating shaft (53) is provided with a torsion spring for resetting the rotating shaft (53).

4. The drying and mixing equipment for recycled asphalt mixture according to claim 3, characterized in that: A plurality of driven plates (52) are provided, and the plurality of driven plates (52) are connected via a rotating shaft (53).

5. The drying and mixing equipment for recycled asphalt mixture according to claim 3, characterized in that: Also includes: A limit strip (21) is arranged at a position close to the top of the inner wall of the box body (2) on a side away from the driving shaft (4); A sleeve is sleeved on the driving shaft (4), and one end of the sleeve is fixed on the inner wall of the box body (2); The limiting block (56) is fixedly connected to the sleeve and is used to limit the spring-up angle of the driving plate (51).

6. The drying and mixing equipment for recycled asphalt mixture according to claim 1, characterized in that: The plurality of box bodies (2) are divided into a plurality of rows, the driving shafts (4) on the plurality of box bodies (2) in each row are aligned and connected, and the plurality of box bodies (2) in two adjacent rows are staggered.

7. The drying and mixing equipment for recycled asphalt mixture according to claim 3, characterized in that: The side surfaces of the driving plate (51) and the driven plate (52) are both provided with a first scraper (54); an end of the driven plate (52) away from the driving plate (51) is provided with a second scraper (55); the first scraper (54) and the second scraper (55) respectively correspond to one side inner wall of the box body (2) and abut against the corresponding inner wall.

8. The drying and mixing equipment for recycled asphalt mixture according to claim 1, characterized in that: It also comprises a plurality of cable chains (7), each box body (2) being provided with a cable chain (7), one end of each of the cable chains (7) being connected to a side of the corresponding box body (2) away from the driving shaft (4) and close to the bottom.

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