An agitating structure for an asphalt paving device

Abstract

The present application relates to bitumen paving technical field, it discloses a kind of stirring structure for bitumen paving device, including horizontal stirring tank, stirring vane is installed in horizontal stirring tank and stirring vane is arrayed with multiple along the circumferential direction of horizontal stirring tank, the extension direction of stirring vane is parallel to the center line of horizontal stirring tank, the end of stirring vane extends blade shaft, the end of blade shaft passes through bearing hole being arranged in the closed end of horizontal stirring tank, blade shaft is movably connected between blade shaft and bearing hole, the end of blade shaft is sleeved with gear and is connected by speed increaser between the power connection, the inside of stirring vane is hollow, blade shaft is hollow shaft shape, the outer surface of stirring vane is arrayed with several output holes, the closed end of horizontal stirring tank side coaxially is provided with arc gear rack, arc gear rack is located below the axis line of horizontal stirring tank, and during the process that stirring vane rotates along with horizontal stirring tank, gear can be engaged with arc gear rack.

Description

Technical Field

[0001] This invention relates to the field of asphalt paving technology, and more specifically to a mixing structure for an asphalt paving device. Background Technology

[0002] Asphalt mixtures are the most widely used paving materials in highway and urban road pavement engineering. Their road performance directly depends on the uniform coating degree of asphalt and mineral aggregates (aggregates, mineral powder) in the mixture. Mixing, as a key process in asphalt mixture production, aims to achieve a uniform distribution of the various components at both the macroscopic and microscopic levels within a limited time, forming a homogeneous mixture system. However, insufficient mixing has long plagued asphalt mixture production practice, becoming a prominent technical challenge affecting the quality of pavement engineering.

[0003] Insufficient mixing manifests macroscopically primarily as segregation and whitening of asphalt mixtures. Segregation refers to the separation of coarse and fine aggregates, or asphalt, from aggregates in the mixture, resulting in an uneven composition. Whitening manifests as some aggregate particles not being fully coated with asphalt, exhibiting a dry, mottled appearance. Studies have shown that unevenness in the mixture during construction is a significant intrinsic factor leading to early pavement distresses such as high-temperature rutting, low-temperature cracking, and water damage. These defects gradually become apparent after the pavement has been in service, severely impacting its lifespan and driving safety.

[0004] Most existing mixing technologies use an electric motor to drive a mixing shaft, which in turn rotates the mixing blades to mix aggregates and asphalt. This type of mixing technology suffers from problems such as dead zones and insufficient mixing, requiring further improvement. Furthermore, the resulting asphalt material often leaves residue in the mixing tank due to its viscosity, which can negatively impact subsequent batches.

[0005] Based on the above, the present invention proposes a mixing structure for an asphalt paving device. Summary of the Invention

[0006] To address the problems mentioned in the background above, the present invention provides a mixing structure for an asphalt paving device.

[0007] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows.

[0008] A mixing structure for an asphalt paving device includes a mixing assembly. The mixing assembly includes a horizontal mixing tank and a motor for driving the horizontal mixing tank to rotate. The horizontal mixing tank is equipped with mixing blades, and multiple mixing blades are arranged in an array along the circumference of the horizontal mixing tank. The extension direction of the mixing blades is parallel to the center line of the horizontal mixing tank. The ends of the mixing blades extend to blade shafts, and the ends of the blade shafts pass through bearing holes provided at the closed end of the horizontal mixing tank. The blade shafts are movably connected to the bearing holes.

[0009] The end of the blade shaft is fitted with a gear, and the two are connected by a speed increaser.

[0010] The stirring blade is hollow inside, the blade shaft is hollow, and the outer surface of the stirring blade is arrayed with several output holes;

[0011] An arc-shaped rack is coaxially arranged on one side of the closed end of the horizontal mixing tank. The arc-shaped rack is located below the axis of the horizontal mixing tank, and the gear can mesh with the arc-shaped rack as the mixing blades rotate together with the horizontal mixing tank.

[0012] Furthermore, the closed end of the horizontal mixing tank has a coaxially extending mounting shaft. A ring frame and a rotary joint are sleeved on the outside of the mounting shaft. The output end of the rotary joint is connected to the ring frame. A tube is provided on one side of the ring frame to be inserted into the blade shaft. The inside of the ring frame is hollow and is used to realize the communication between the tube and the rotary joint.

[0013] Furthermore, the inner ring surface of the fixed ring is composed of a clearance arc surface, a limiting arc surface, and a connecting arc surface. The central angle of the clearance arc surface is the same as the central angle of the arc rack and the two are arranged side by side. The connecting arc surface is used to realize the connection between the clearance arc surface and the limiting arc surface. The inner diameter of the clearance arc surface is larger than the inner diameter of the limiting arc surface.

[0014] A support is provided at the end of the blade shaft. When the gear meshes with the arc rack, the blade shaft rotates with the stirring blades. During this process, the support does not contact the clearance arc surface. When the gear meshes with the end of the arc rack, the side of the support facing the limiting arc surface is set as a supporting arc surface. The supporting arc surface has the same diameter as the limiting arc surface.

[0015] An asphalt paving device encompassing the above-mentioned mixing structure further includes a vehicle body, the mixing structure being mounted on the vehicle body, and a feeding assembly for supplying aggregates into a horizontal mixing tank and supplying cold-mixed asphalt to a rotary joint.

[0016] Furthermore, the open end of the horizontal mixing tank is equipped with a tank cover;

[0017] The feeding assembly includes an aggregate bin and an asphalt bin located above the horizontal mixing tank, as well as a peristaltic pump;

[0018] The inlet of the peristaltic pump is connected to the asphalt tank, and the outlet of the peristaltic pump is connected to the inlet of the rotary joint.

[0019] The end face of the tank lid is provided with a feed hole, which is located near the highest point of the outer circumference of the horizontal mixing tank.

[0020] Furthermore, the bottom of the aggregate bin is designed as a horizontally arranged arc shape, and a side hole is provided on one side of the bottom of the bin. A side pipe extends from the opening of the side hole, and an auger is installed inside the side pipe. One end of the auger passes through the aggregate bin.

[0021] A notch is provided at the lowest point of the outer circumference of the side pipe;

[0022] The upper surface of the can lid extends with a sealing plate. The upper surface of the sealing plate is set in an arc shape and fits the outer circular surface of the side pipe. The end face of the sealing plate is provided with a connecting hole and the connecting hole is connected to the notch. The connecting hole and the feed hole are connected by a guide pipe.

[0023] An asphalt paving device encompassing the above-mentioned mixing structure further includes a vehicle body, wherein the mixing structure is mounted on the vehicle body, and an output component is also installed on the vehicle body for traction of the asphalt concrete in the horizontal mixing tank to be output after mixing is completed.

[0024] Furthermore, the can lid is movable, and the output components include a conveyor belt, a pusher, a scraper, and a drive unit;

[0025] The side support facing the can lid is set in a flat shape and the two are initially attached;

[0026] The conveyor belt is arranged horizontally in the conveying direction. Scrapers extend vertically from the outer surface of the conveyor belt. Multiple scrapers are arranged in an array along the extension direction of the conveyor belt. The upper surface of the scraper located above the conveyor belt is in contact with the lower surface of the side support or the lower surface of the can cover.

[0027] The scraper is located above the tank cover. When the distance between the tank cover and the horizontal mixing tank reaches its maximum value and the scraper moves downward, the two sides of the scraper are respectively attached to the tank cover and the side support.

[0028] The push plug is fitted inside the horizontal mixing tank. The end face of the push plug is provided with a clearance opening for avoiding the mixing blades. One end of the push plug extends coaxially with a connecting shaft, and the end of the connecting shaft extends out of the horizontal mixing tank. Initially, the push plug is in contact with the closed end of the horizontal mixing tank.

[0029] Furthermore, a side support is provided on the outside of the opening end of the horizontal mixing tank, and a guide rod parallel to the center line of the horizontal mixing tank is provided on one side of the tank cover. The guide rod and the side support are slidably connected, and a spring four is sleeved on the outside of the guide rod between the side support and the tank cover. The elastic force of the spring four is used to drive the tank cover to move closer to the horizontal mixing tank. Initially, under the elastic force of the spring four, the tank cover and the opening end of the horizontal mixing tank are in close contact.

[0030] Furthermore, the driving component includes a drive seat located on one side of the closed end of the horizontal mixing tank and a cylinder for driving the drive seat to move along the center line of the horizontal mixing tank. One side of the drive seat is connected to a drive shaft one and a drive shaft two parallel to the center line of the horizontal mixing tank.

[0031] The end of drive shaft one extends into a hollow shaft-shaped coupling, and a spring one is sleeved inside the coupling between drive shaft one and push plug. A nut is provided at the end of the coupling. When the push plug is located at the open end of the horizontal mixing tank, the movement of the nut is restricted.

[0032] A connecting rod extends parallel to the second drive shaft on one side of the can lid. The end of the connecting rod extends into the second drive shaft, which is in the shape of a hollow shaft. A second spring is installed inside the second drive shaft, located between the connecting rod and the drive seat. The spring force coefficient of the second spring is greater than that of the fourth spring.

[0033] The vehicle body is equipped with a pump casing parallel to the center line of the horizontal mixing tank. Piston 1 and Piston 2 are fitted inside the pump casing, and a spring 3 is installed between them. A piston rod extends from one side of Piston 2. The end of the piston rod extends out of the pump casing and is located on the side of the pump casing facing the drive seat. An air pipe is connected to the side of the pump casing away from the drive seat. The end of the air pipe is connected to a vertically arranged hydraulic telescopic rod. The output end of the hydraulic telescopic rod is connected to the scraper seat through a fixed rod.

[0034] Compared with the prior art, the beneficial effects of this invention are as follows:

[0035] I. In this case, the advantages of the integrated mixing technology, which utilizes the revolution and rotation of the mixing blades and the entry of cold-mixed asphalt into the horizontal mixing tank through the outlet, are as follows:

[0036] Technical effect 1: In this case, the pre-set amount of aggregate is first added to the horizontal mixing tank, and then cold-mixed asphalt is input into the horizontal mixing tank through a peristaltic pump. The peristaltic pump can accurately and efficiently complete the ratio of aggregate to cold-mixed asphalt. In addition, in this case, cold-mixed asphalt can be input while mixing, which can improve the efficiency of mixing.

[0037] Technical effect 2: In this case, the horizontal mixing tank is equipped with several sets of mixing blades. These mixing blades revolve around the center line of the mixing tank. The cold-mix asphalt output hole array is set on the surface of the mixing blades, which can greatly improve the dispersion of cold-mix asphalt, ensure that it has more sufficient contact with the aggregate, and achieve rapid mixing.

[0038] Furthermore, as the mixing blades revolve from the bottom to the top of the horizontal mixing tank, the area enclosed by the mixing blades and the tank wall can scoop up the aggregate and move it upwards. Finally, the aggregates slide down the mixing blades. During this process, cold-mixed asphalt flows out along the output holes set on the surface of the mixing blades and forms a continuously flowing water curtain, which can greatly improve the mixing and blending effect of asphalt and aggregates.

[0039] Furthermore, when the mixing blades are embedded in the aggregate, they also rotate on their own axis while revolving around the central axis. Due to the speed increaser, the rotation is relatively fast. During the rotation, under the centrifugal force of the mixing blades, the cold-mix asphalt is rapidly dispersed and ejected in all directions through the output holes set on the surface of the mixing blades. The aggregates surrounding the mixing blades can be evenly coated with the cold-mix asphalt, which can also greatly improve the mixing and blending effect between the cold-mix asphalt and the aggregates.

[0040] In conclusion, in this case, whether the mixing blades are embedded in the aggregate or detached from it, they can improve the mixing and blending effect between the aggregate and the asphalt.

[0041] II. In this case, the technical advantages of the output component are:

[0042] Technical effect 3: In this case, by removing the tank cover, the asphalt concrete material is slowly pushed outward by using the pusher, which facilitates the output of the material. During the material output process, the pusher can scrape off the residual material on the inner wall of the horizontal mixing tank and the surface of the mixing blades, ensuring the cleanliness of the entire mixing structure after operation. If there is residual material, it is easy to solidify over time, which may affect the next material mixing.

[0043] Furthermore, residual material on the can lid, side support, and push plug can be cleaned by the scraper.

[0044] Furthermore, the scraper can clean up any residual material on the can lid, side supports, and the lower surface of the scraper.

[0045] In other words, the output components of the laying device disclosed in this case form an integrated scraping structure that can keep the entire device clean by using a pusher, can lid, scraper seat, and scraper on the conveyor belt. This facilitates long-term repeated use without the need for additional cleaning structures. Attached Figure Description

[0046] Figure 1This is a schematic diagram of the structure of the present invention;

[0047] Figure 2 A cross-sectional view of the present invention during stirring;

[0048] Figure 3 A cross-sectional view of the present invention as the pusher pushes the mixed material outward for output;

[0049] Figure 4 A cross-sectional view of the present invention when scraping off residual material after the material has been output;

[0050] Figure 5 This is a schematic diagram of the stirring assembly and the output assembly;

[0051] Figure 6 This is a cross-sectional view of the stirring assembly;

[0052] Figure 7 This is a schematic diagram of the stirring blades and the pusher.

[0053] Figure 8 A schematic diagram of the stirring blades, retaining ring, and arc-shaped toothed rack;

[0054] Figure 9 This is a schematic diagram of the output component;

[0055] Figure 10 This is a schematic diagram of the can lid and side support.

[0056] The labels in the attached diagram are:

[0057] 100. Vehicle body; 200. Mixing assembly; 201. Horizontal mixing tank; 2011. Side support; 202. Tank cover; 2021. Guide rod; 2022. Spring 4; 203. Mixing blade; 2031. Blade shaft; 2032. Output hole; 2033. Speed ​​increaser; 204. Motor; 205. Ring frame; 2051. Insert pipe; 206. Gear; 207. Arc-shaped rack; 208. Fixing ring; 2081. Avoidance arc surface; 2082. Limiting arc surface; 2083. Connecting arc surface; 209. Support; 300. Feeding assembly; 301. Aggregate box; 302. Side pipe; 303. Screwdriver; 304. 305. Feed pipe; 306. Sealing plate; 307. Asphalt tank; 308. Peristaltic pump; 409. Rotary joint; 400. Output assembly; 401. Conveyor belt; 4011. Scraper; 402. Push plug; 4021. Coupling; 4022. Clearance opening; 403. Scraper seat; 404. Drive component; 405. Cylinder; 406. Drive seat; 407. Drive shaft one; 408. Spring one; 409. Drive shaft two; 410. Connecting rod; 411. Spring two; 412. Pump housing; 413. Piston one; 414. Piston two; 415. Piston rod; 416. Spring three; 417. Air pipe; 418. Hydraulic telescopic rod. Detailed Implementation

[0058] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0059] Example 1

[0060] Reference Figures 1-8 A mixing structure for an asphalt paving device includes a mixing assembly 200, which includes a horizontal mixing tank 201 and a motor 204 for driving the horizontal mixing tank 201 to rotate. The motor 204 may employ servo motor technology.

[0061] The horizontal mixing tank 201 is equipped with a tank cover 202 at its open end.

[0062] A stirring blade 203 is installed inside the horizontal mixing tank 201, and multiple stirring blades 203 are arranged in an array along the circumference of the horizontal mixing tank 201. Furthermore, the extension direction of the stirring blades 203 is parallel to the center line of the horizontal mixing tank 201. The end of the stirring blade 203 extends to a blade shaft 2031, and the end of the blade shaft 2031 passes through a bearing hole provided at the closed end of the horizontal mixing tank 201. The blade shaft 2031 and the bearing hole are movably connected, for example, through a bearing. Furthermore, a gear 206 is sleeved on the end of the blade shaft 2031, and the two are poweredly connected through a speed increaser 2033.

[0063] The mixing blade 203 is hollow inside, the blade shaft 2031 is a hollow shaft shape, and the outer surface of the mixing blade 203 is provided with a number of output holes 2032. In this case, cold-mixed asphalt is selected, which enters the horizontal mixing tank 201 through the blade shaft 2031, the mixing blade 203 and the output holes 2032.

[0064] Furthermore, since the stirring blades 203 rotate following the horizontal mixing tank 201, therefore, referring to Figure 6 The horizontal mixing tank 201 has a mounting shaft extending coaxially from its closed end. A ring frame 205 and a rotary joint 308 are sleeved on the outside of the mounting shaft. The output end of the rotary joint 308 is connected to the ring frame 205. A tube 2051 is provided on one side of the ring frame 205 and inserted into the blade shaft 2031. The ring frame 205 is hollow inside and is used to realize the communication between the tube 2051 and the rotary joint 308. Therefore, cold-mixed asphalt flows into the blade shaft 2031 through the input and output ends of the rotary joint 308 and the tube 2051, and finally enters the horizontal mixing tank 201 through the output hole 2032.

[0065] Reference Figure 7 and Figure 8The stirring structure also includes an arc-shaped rack 207 and a fixing ring 208 coaxially located on one side of the closed end of the horizontal stirring tank 201.

[0066] The arc-shaped rack 207 is located below the axis of the horizontal mixing tank 201. As the mixing blade 203 rotates together with the horizontal mixing tank 201, the gear 206 can mesh with the arc-shaped rack 207. The two work together to make the blade shaft 2031 rotate. Even if the mixing blade 203 rotates, the mixing blade 203 stops rotating when the gear 206 disengages and moves away from the arc-shaped rack 207.

[0067] The inner ring surface of the fixed ring 208 is composed of a clearance arc surface 2081, a limiting arc surface 2082, and a connecting arc surface 2083. The central angle of the clearance arc surface 2081 is the same as the central angle of the arc rack 207 and the two are arranged side by side. The connecting arc surface 2083 is used to connect the clearance arc surface 2081 and the limiting arc surface 2082. The inner diameter of the clearance arc surface 2081 is larger than the inner diameter of the limiting arc surface 2082.

[0068] A support 209 is provided at the end of the blade shaft 2031.

[0069] When gear 206 meshes with arc rack 207, during the rotation of blade shaft 2031 carrying stirring blade 203, support 209 does not contact avoidance arc surface 2081. That is, the purpose of setting avoidance arc surface 2081 is to make the rotation of stirring blade 203 smooth and stable.

[0070] Since gear 206 meshes with arc-shaped rack 207, when the ends of gear 206 and arc-shaped rack 207 are engaged and about to disengage, support 209 is configured as a supporting arc surface on the side facing the limiting arc surface 2082. The supporting arc surface and the limiting arc surface 2082 have the same diameter. Then, guided by connecting arc surface 2083, support 209 passes over connecting arc surface 2083 and reaches the position of limiting arc surface 2082. At this time, there is a gap between the supporting arc surface and the limiting arc surface 2082. Despite a slight angle, under the weight of the mixing blade 203 and the asphalt concrete scooped up by the mixing blade 203, the blade shaft 2031 has a downward deflection tendency, thereby causing the supporting arc surface to fit into the limiting arc surface 2082. In other words, through the cooperation between the supporting arc surface and the limiting arc surface 2082, after the gear 206 and the arc rack 207 disengage, the mixing blade 203 is restricted from rotating. The mixing blade 203 rotates only when the gear 206 and the arc rack 207 are engaged.

[0071] In a preferred embodiment, the central angle of the arc-shaped rack 207 is 180 degrees.

[0072] The working process of Example 1:

[0073] First, the aggregate is put into the horizontal mixing tank 201, with the upper surface of the aggregate slightly higher than the end height of the arc-shaped toothed rack 207;

[0074] Then, the motor 204 drives the horizontal mixing tank 201 to rotate, and the mixing blade 203 rotates together with the horizontal mixing tank 201, which is called revolution. When the gear 206 meshes with the arc rack 207, the corresponding mixing blade 203 is located inside the aggregate and rotates on its own axis.

[0075] Meanwhile, cold-mixed asphalt enters the horizontal mixing tank 201 through the outlet 2032;

[0076] In this case, the advantages of the integrated mixing technology, which utilizes the revolution and rotation of the mixing blades 203 and the entry of cold-mixed asphalt into the horizontal mixing tank 201 through the outlet 2032, are as follows:

[0077] Technical effect 1: In this case, the pre-set amount of aggregate is first added to the horizontal mixing tank, and then cold-mixed asphalt is input into the horizontal mixing tank through a peristaltic pump. The peristaltic pump can accurately and efficiently complete the ratio of aggregate to cold-mixed asphalt. In addition, in this case, cold-mixed asphalt can be input while mixing, which can improve the efficiency of mixing.

[0078] Technical effect 2: In this case, the horizontal mixing tank is equipped with several sets of mixing blades. These mixing blades revolve around the center line of the mixing tank. The cold-mix asphalt output hole array is set on the surface of the mixing blades, which can greatly improve the dispersion of cold-mix asphalt, ensure that it has more sufficient contact with the aggregate, and achieve rapid mixing.

[0079] Furthermore, as the mixing blades revolve from the bottom to the top of the horizontal mixing tank, the area enclosed by the mixing blades and the tank wall can scoop up the aggregate and move it upwards. Finally, the aggregates slide down the mixing blades. During this process, cold-mixed asphalt flows out along the output holes set on the surface of the mixing blades and forms a continuously flowing water curtain, which can greatly improve the mixing and blending effect of asphalt and aggregates.

[0080] Furthermore, when the mixing blades are embedded in the aggregate, they also rotate on their own axis while revolving around the central axis. Due to the speed increaser, the rotation is relatively fast. During the rotation, under the centrifugal force of the mixing blades, the cold-mix asphalt is rapidly dispersed and ejected in all directions through the output holes set on the surface of the mixing blades. The aggregates surrounding the mixing blades can be evenly coated with the cold-mix asphalt, which can also greatly improve the mixing and blending effect between the cold-mix asphalt and the aggregates.

[0081] In conclusion, in this case, whether the mixing blades are embedded in the aggregate or detached from it, they can improve the mixing and blending effect between the aggregate and the asphalt.

[0082] Example 2

[0083] An asphalt paving device encompassing the above-mentioned mixing structure further includes a vehicle body 100, the mixing structure being mounted on the vehicle body 100, and a feeding assembly 300 for supplying aggregates to a horizontal mixing tank 201 and supplying cold-mixed asphalt to a rotary joint 308.

[0084] Reference Figure 2 , Figure 5 and Figure 6 The feeding assembly 300 includes an aggregate bin 301 and an asphalt bin 306 located above the horizontal mixing tank 201, as well as a peristaltic pump 307.

[0085] The input end of the peristaltic pump 307 is connected to the asphalt tank 306, and the output end of the peristaltic pump 307 is connected to the input end of the rotary joint 308. The peristaltic pump 307 draws the cold-mixed asphalt in the asphalt tank 306 into the rotary joint 308, and finally enters the horizontal mixing tank 201 through the output hole 2032.

[0086] The bottom of the aggregate bin 301 is designed as a horizontally arranged arc shape, and a side hole is provided on one side of the bottom. A side pipe 302 extends from the opening of the side hole, and an auger 303 is installed in the side pipe 302. Furthermore, one end of the auger 303 is connected to the end of the side pipe 302, and the other end passes through the aggregate bin 301 and is connected to the existing motor technology to form a power connection. The motor technology drives the auger 303 to rotate, thereby pulling the aggregate in the aggregate bin 301 to move into the side pipe 302.

[0087] A notch is provided at the lowest point of the outer surface of the side pipe 302, and the aggregate inside the side pipe 302 eventually falls downward through the notch.

[0088] The end face of the tank cover 202 is provided with a feed hole, which is close to the highest point of the outer circle of the horizontal mixing tank 201.

[0089] A sealing plate 305 extends from the upper surface of the can lid 202. The upper surface of the sealing plate 305 is set in an arc shape and fits against the outer circular surface of the side pipe 302, that is, the sealing plate 305 is used to seal the gap.

[0090] The end face of the sealing plate 305 is provided with a connection hole and the connection hole is in communication with the notch. The connection hole and the feed hole are connected by a guide tube 304.

[0091] The aggregate falling downwards through the notch eventually enters the horizontal mixing tank 201 through the connecting hole, the guide pipe 304, and the feed hole.

[0092] Example 3

[0093] An asphalt paving device encompassing the above-mentioned mixing structure further includes a vehicle body 100, the mixing structure being mounted on the vehicle body 100, and an output component 400 being mounted on the vehicle body 100 for outputting asphalt concrete from the horizontal mixing tank 201 after mixing is completed.

[0094] Reference Figure 10 The tank cover 202 is designed to be movable. Specifically, a side support 2011 is provided on the outside of the opening end of the horizontal mixing tank 201. A guide rod 2021 parallel to the center line of the horizontal mixing tank 201 is provided on one side of the tank cover 202. The guide rod 2021 and the side support 2011 are slidably connected, and a spring 2022 is sleeved on the outside of the guide rod 2021 between the side support 2011 and the tank cover 202. The elastic force of the spring 2022 is used to drive the tank. As the lid 202 moves closer to the horizontal mixing tank 201, initially, under the elastic force of the spring 2022, the lid 202 is in close contact with the opening end of the horizontal mixing tank 201, and the lid 202 blocks the opening end of the horizontal mixing tank 201. When the lid 202 is subjected to external force and the compression of the spring 2022 increases, the lid 202 will move away from the opening end of the horizontal mixing tank 201, that is, the opening end of the horizontal mixing tank 201 is opened.

[0095] It should be noted that when the can lid 202 moves, the sealing plate 305 remains in place to seal the gap.

[0096] Reference Figures 2-5 The output component 400 includes a conveyor belt 401, a pusher 402, a scraper 403, and a drive component 404.

[0097] The side bracket 2011 is set in a planar shape on the side facing the can lid 202 and the two are initially attached.

[0098] The conveyor belt 401 is arranged horizontally in the conveying direction. Scrapers 4011 extend vertically from the outer surface of the conveyor belt 401. Multiple scrapers 4011 are arranged in an array along the extension direction of the conveyor belt 401. The upper surface of the scraper 4011 located above the conveyor belt 401 is in contact with the lower surface of the side support 2011 or the lower surface of the tank cover 202. It should be noted that a paving structure is provided on one side of the discharge end of the conveyor belt 401. The paving structure can be achieved using the existing asphalt paving machine paving technology. It is not the core of this case and will not be described in detail.

[0099] The scraper seat 403 is located above the tank cover 202. When the distance between the tank cover 202 and the horizontal mixing tank 201 reaches its maximum value and the scraper seat 403 moves downward, the two sides of the scraper seat 403 are respectively attached to the tank cover 202 and the side support 2011.

[0100] The push plug 402 is fitted inside the horizontal mixing tank 201. The end face of the push plug 402 is provided with a clearance opening 4022 for avoiding the stirring blade 203. One end of the push plug 402 extends coaxially with a connecting shaft 4021. The end of the connecting shaft 4021 extends out of the horizontal mixing tank 201. Initially, the push plug 402 is in contact with the closed end of the horizontal mixing tank 201 and does not affect the stirring process.

[0101] After mixing is complete, the drive component 404 moves the pusher 402, the can cover 202, and the scraper 403 to output the mixed asphalt concrete material. Specifically:

[0102] The tank cover 202 moves, the opening end of the horizontal mixing tank 201 is opened, the pusher 402 moves, pushing the asphalt concrete material in the horizontal mixing tank 201 outward. The asphalt concrete material falls onto the conveyor belt 401 and is pulled away by the scraper 4011, and finally output through the discharge end of the conveyor belt 401.

[0103] When the pusher 402 moves to the opening end of the horizontal mixing tank 201, it stops moving and the scraper 403 moves down to scrape off the material remaining on the tank cover 202, the side support 2011 and the pusher 402. The scraped material falls onto the conveyor belt 401.

[0104] When the scraper seat 403 moves down to contact the scraper 4011, it stops moving. The conveyor belt 401 continues to run, pulling the scraper 4011 to move and scrape off the residual material on the scraper seat 403, the can cover 202 and the lower surface of the side support 2011.

[0105] In summary, the technical advantages of the output component in this case are:

[0106] Technical effect 3: In this case, by removing the tank cover, the asphalt concrete material is slowly pushed outward by using the pusher, which facilitates the output of the material. During the material output process, the pusher can scrape off the residual material on the inner wall of the horizontal mixing tank and the surface of the mixing blades, ensuring the cleanliness of the entire mixing structure after operation. If there is residual material, it is easy to solidify over time, which may affect the next material mixing.

[0107] Furthermore, residual material on the can lid, side support, and push plug can be cleaned by the scraper.

[0108] Furthermore, the scraper can clean up any residual material on the can lid, side supports, and the lower surface of the scraper.

[0109] In other words, the output components of the laying device disclosed in this case form an integrated scraping structure that can keep the entire device clean by using a pusher, can lid, scraper seat, and scraper on the conveyor belt. This facilitates long-term repeated use without the need for additional cleaning structures.

[0110] Reference Figure 9 and Figure 10 ,

[0111] The drive unit 404 includes a drive seat 406 located on one side of the closed end of the horizontal mixing tank 201 and a cylinder 405 for driving the drive seat 406 to move along the center line of the horizontal mixing tank 201.

[0112] One side of the drive base 406 is connected to drive shaft 407 and drive shaft 409, which are parallel to the center line of the horizontal mixing tank 201.

[0113] The end of the drive shaft 407 extends into the hollow shaft 4021, and a spring 408 is sleeved inside the shaft 4021 between the drive shaft 407 and the push plug 402.

[0114] Furthermore, a nut is provided at the end of the coupling 4021. When the push plug 402 is located at the open end of the horizontal mixing tank 201, the nut contacts the rotary joint 308, and the movement of the push plug 402 to push the material out is restricted.

[0115] A connecting rod 410 extends from one side of the can lid 202, parallel to the second drive shaft 409. The end of the connecting rod 410 extends into the second drive shaft 409, which is in the shape of a hollow shaft. A second spring 411 is sleeved inside the second drive shaft 409, located between the connecting rod 410 and the drive seat 406. The elastic coefficient of the second spring 411 is much greater than that of the fourth spring 2022.

[0116] A pump casing 412 parallel to the center line of the horizontal mixing tank 201 is provided on the vehicle body 100. A piston 1 413 and a piston 2 414 are installed inside the pump casing 412, and a spring 3 416 is provided between them. A piston rod 415 extends from one side of the piston 2 414. The end of the piston rod 415 extends out of the pump casing 412 and is located on the side of the pump casing 412 facing the drive seat 406. An air pipe 417 is connected to the side of the pump casing 412 away from the drive seat 406. The end of the air pipe 417 is connected to a vertically arranged hydraulic telescopic rod 418. The output end of the hydraulic telescopic rod 418 is connected to the scraper seat 403 through a fixed rod.

[0117] Working process of drive component 404:

[0118] Cylinder 405 starts, causing drive seat 406 to move closer to horizontal mixing tank 201. During the movement of drive seat 406:

[0119] Through the cooperation of drive shaft 407 and spring 408, the pusher 4021 and push plug 402 move. At the same time, through the cooperation of drive shaft 409 and spring 411, the pusher rod 410 and can lid 202 move.

[0120] When the can lid 202 reaches its maximum moving distance, the drive seat 406 continues to move, and the spring 411 is compressed.

[0121] When the pusher 402 moves to the opening end of the horizontal mixing tank 201, it cannot move further. After that, the drive seat 406 continues to move, the spring 408 is compressed, the drive seat 406 will contact the piston rod 415 and push the piston 414 and piston 413 to move, pushing the hydraulic medium in the pump housing 412 into the hydraulic telescopic rod 418. The hydraulic telescopic rod 418 retracts, taking the scraper seat 403 down.

[0122] In summary, the can lid 202, the pusher 402, and the scraper 403 can be driven to scrape off residual materials by the drive component 404 as a single power source. The connection between each sub-action is smooth. Of course, the scraping action of residual materials can also be achieved by driving the can lid 202, the pusher 402, and the scraper 403 to move through other technical means.

[0123] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A mixing structure for an asphalt paving device, comprising a mixing assembly (200), the mixing assembly (200) including a horizontal mixing tank (201) and a motor (204) for driving the horizontal mixing tank (201) to rotate, characterized in that, A stirring blade (203) is installed inside the horizontal mixing tank (201), and multiple stirring blades (203) are arranged in an array along the circumferential direction of the horizontal mixing tank (201). The extension direction of the stirring blade (203) is parallel to the center line of the horizontal mixing tank (201). The end of the stirring blade (203) extends into a blade shaft (2031). The end of the blade shaft (2031) passes through a bearing hole provided at the closed end of the horizontal mixing tank (201), and the blade shaft (2031) is movably connected to the bearing hole. The blade shaft (2031) is fitted with a gear (206) at its end, and the two are connected by a speed increaser (2033); The interior of the stirring blade (203) is hollow, the blade shaft (2031) is a hollow shaft shape, and the outer surface of the stirring blade (203) is provided with a number of output holes (2032). A curved rack (207) is coaxially arranged on one side of the closed end of the horizontal mixing tank (201). The curved rack (207) is located below the axis of the horizontal mixing tank (201). During the rotation of the mixing blade (203) along with the horizontal mixing tank (201), the gear (206) can mesh with the curved rack (207).

2. The mixing structure for an asphalt paving device according to claim 1, characterized in that, The closed end of the horizontal mixing tank (201) is coaxially extended with an installation shaft. The installation shaft is fitted with a ring frame (205) and a rotary joint (308). The output end of the rotary joint (308) is connected to the ring frame (205). A tube (2051) is provided on one side of the ring frame (205) for inserting into the blade shaft (2031). The ring frame (205) is hollow inside and is used to realize the communication between the tube (2051) and the rotary joint (308).

3. The mixing structure for an asphalt paving device according to claim 1, characterized in that, The inner ring surface of the fixed ring (208) is composed of a clearance arc surface (2081), a limiting arc surface (2082), and a connecting arc surface (2083). The central angle of the clearance arc surface (2081) is the same as the central angle of the arc rack (207) and the two are arranged side by side. The connecting arc surface (2083) is used to realize the connection between the clearance arc surface (2081) and the limiting arc surface (2082). The inner diameter of the clearance arc surface (2081) is larger than the inner diameter of the limiting arc surface (2082). A support (209) is provided at the end of the blade shaft (2031). When the gear (206) meshes with the arc rack (207), the support (209) does not contact the avoidance arc surface (2081) during the rotation of the blade shaft (2031) carrying the stirring blade (203). When the gear (206) meshes with the end of the arc rack (207), the side of the support (209) facing the limiting arc surface (2082) is set as a supporting arc surface, and the supporting arc surface and the limiting arc surface (2082) have the same diameter.

4. An asphalt paving device encompassing the mixing structure described in claim 2, characterized in that, It also includes a vehicle body (100), the mixing structure is mounted on the vehicle body (100), and the vehicle body (100) is also equipped with a feeding assembly (300) for supplying aggregates into the horizontal mixing tank (201) and supplying cold-mixed asphalt to the rotary joint (308).

5. The asphalt paving device according to claim 4, characterized in that, The horizontal mixing tank (201) is provided with a tank cover (202) at its open end. The feeding assembly (300) includes an aggregate bin (301) and an asphalt bin (306) located above the horizontal mixing tank (201) and a peristaltic pump (307). The inlet of the peristaltic pump (307) is connected to the asphalt tank (306), and the outlet of the peristaltic pump (307) is connected to the inlet of the rotary joint (308). The end face of the tank cover (202) is provided with a feed hole and the feed hole is close to the highest point of the outer circle of the horizontal mixing tank (201).

6. The asphalt paving device according to claim 5, characterized in that, The bottom of the aggregate bin (301) is set in a horizontal arc shape and a side hole is provided on one side of the bottom of the bin. A side pipe (302) extends from the opening of the side hole. An auger (303) is installed in the side pipe (302) and one end of the auger (303) passes through the aggregate bin (301). A notch is provided at the lowest point of the outer surface of the side pipe (302); The upper surface of the can lid (202) extends with a sealing plate (305). The upper surface of the sealing plate (305) is set in an arc shape and the upper surface of the sealing plate (305) fits against the outer circle of the side pipe (302). The end face of the sealing plate (305) is provided with a connecting hole and the connecting hole is connected to the notch. The connecting hole and the feed hole are connected by a guide pipe (304).

7. An asphalt paving device encompassing the mixing structure described in claim 3, characterized in that, It also includes a vehicle body (100), the mixing structure is mounted on the vehicle body (100), and the vehicle body (100) is also equipped with an output component (400) for pulling the asphalt concrete in the horizontal mixing tank (201) to the outside after the mixing is completed.

8. The asphalt paving device according to claim 7, characterized in that, The can lid (202) is movable, and the output assembly (400) includes a conveyor belt (401), a pusher (402), a scraper (403), and a drive unit (404). The side bracket (2011) is set in a planar shape on the side facing the can lid (202) and the two are initially attached to each other; The conveyor belt (401) is arranged horizontally in the conveying direction. Scrapers (4011) extend vertically on the outer surface of the conveyor belt (401). Multiple scrapers (4011) are arranged in an array along the extension direction of the conveyor belt (401). The upper surface of the scraper (4011) located above the conveyor belt (401) is in contact with the lower surface of the side support (2011) or the lower surface of the can cover (202). The scraper (403) is located above the tank cover (202). When the distance between the tank cover (202) and the horizontal mixing tank (201) reaches its maximum value and the scraper (403) moves downward, the two sides of the scraper (403) are respectively attached to the tank cover (202) and the side support (2011). The push plug (402) is fitted inside the horizontal mixing tank (201). The end face of the push plug (402) is provided with a clearance opening (4022) for avoiding the stirring blade (203). One end of the push plug (402) extends coaxially with a connecting shaft (4021). The end of the connecting shaft (4021) extends out of the horizontal mixing tank (201). Initially, the push plug (402) is in contact with the closed end of the horizontal mixing tank (201).

9. The asphalt paving device according to claim 8, characterized in that, A side support (2011) is provided on the outside of the opening end of the horizontal mixing tank (201). A guide rod (2021) parallel to the center line of the horizontal mixing tank (201) is provided on one side of the tank cover (202). The guide rod (2021) and the side support (2011) are slidably connected. A spring four (2022) is sleeved on the outside of the guide rod (2021) between the side support (2011) and the tank cover (202). The elastic force of the spring four (2022) is used to drive the tank cover (202) to move closer to the horizontal mixing tank (201). Initially, under the action of the elastic force of the spring four (2022), the tank cover (202) and the opening end of the horizontal mixing tank (201) are in close contact.

10. The asphalt paving device according to claim 8, characterized in that, The drive unit (404) includes a drive seat (406) located on one side of the closed end of the horizontal mixing tank (201) and a cylinder (405) for driving the drive seat (406) to move along the center line of the horizontal mixing tank (201). One side of the drive seat (406) is connected to a drive shaft one (407) and a drive shaft two (409) parallel to the center line of the horizontal mixing tank (201). The end of the drive shaft (407) extends into the hollow shaft-shaped connecting shaft (4021), and the connecting shaft (4021) is fitted with a spring (408) located between the drive shaft (407) and the push plug (402). The end of the connecting shaft (4021) is provided with a nut, and the movement of the nut is restricted when the push plug (402) is located at the open end of the horizontal mixing tank (201). A connecting rod (410) extends parallel to the second drive shaft (409) on one side of the can lid (202). The end of the connecting rod (410) extends into the second drive shaft (409), which is in the shape of a hollow shaft. A second spring (411) is sleeved inside the second drive shaft (409) between the connecting rod (410) and the drive seat (406). The elastic coefficient of the second spring (411) is greater than that of the fourth spring (2022). A pump casing (412) parallel to the center line of the horizontal mixing tank (201) is provided on the vehicle body (100). A piston 1 (413) and a piston 2 (414) are fitted inside the pump casing (412) and a spring 3 (416) is provided between them. A piston rod (415) extends from one side of the piston 2 (414). The end of the piston rod (415) extends out of the pump casing (412) and is located on the side of the pump casing (412) facing the drive seat (406). An air pipe (417) is connected to the side of the pump casing (412) away from the drive seat (406). The end of the air pipe (417) is connected to a vertically arranged hydraulic telescopic rod (418). The output end of the hydraulic telescopic rod (418) is connected to the scraper seat (403) through a fixed rod.

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