Asphalt paving device for highway engineering

Abstract

The utility model discloses an asphalt paving device for highway engineering, which belongs to the technical field of asphalt paving and comprises a bottom plate, rollers arranged at four corners of the bottom of the bottom plate, a spiral discharging rod rotationally connected to one end of the bottom plate and a flattening mechanism arranged on one side, close to the spiral discharging rod, of the bottom plate. A side panel is arranged at the top of the bottom plate, two inclined panels are fixedly arranged in the side panel, the faces, close to each other, of the inclined panels are in a funnel shape, a discharging mechanism for controlling the longitudinal flowing speed of the asphalt binder is arranged at the position, located at the funnel-shaped bottom, in each inclined panel, and a conveying mechanism is arranged in the side panel and the conveying bin. According to the utility model, the falling speed of the asphalt binder is roughly controlled through the blanking mechanism, then the laying speed is accurately controlled through the conveying mechanism, the asphalt binder is continuously conveyed to the spiral blanking rod by the conveying mechanism and then is uniformly laid on a road, so that the pressure of the spiral blanking rod is reduced, and the spiral blanking rod is not easy to clamp.

Description

Technical Field

[0001] This utility model relates to the field of asphalt paving technology, specifically an asphalt paving device for highway engineering. Background Technology

[0002] Asphalt pavement refers to various types of pavement constructed by incorporating road asphalt materials into mineral materials. Asphalt binders improve the ability of paving aggregates to resist damage to the pavement from traffic and natural factors, resulting in a smooth, dust-free, impermeable, and durable pavement. Therefore, asphalt pavement is one of the most widely used high-grade pavement types in road construction.

[0003] An investigation revealed that Chinese utility model patent CN213925758U discloses a road asphalt paving device for highway engineering. The device includes a base plate with a storage bin on it. The storage bin has a feed hopper at its upper end and a discharge trough at its bottom. A spiral discharge rod is rotatably mounted inside the discharge trough, and a scraper is located at the lower end of the discharge trough. A connecting rod is slidably mounted on the base plate, with a pressure plate at its lower end. A support frame is located above the connecting rod, and a second motor and a turntable are mounted on the support frame. An eccentric shaft is mounted on the turntable, and a hinge rod is hinged to the eccentric shaft. The lower end of the hinge rod is hinged to the upper end of the connecting rod. A disc is rotatably mounted below one end of the base plate, with a brush at its bottom. A third motor is mounted on the base plate, and an exhaust fan is mounted on it. The exhaust fan's outlet is connected to a dust storage bin. A traction ring is located at one end of the base plate.

[0004] When the asphalt paving device in this highway project is used to pave asphalt, the asphalt binder is loaded into the storage bin. The asphalt binder flows out of the device through the discharge chute at the bottom of the storage bin under the action of the auger. After paving, it is compacted. However, when the storage bin is full, the asphalt binder at the bottom of the discharge bin is under the greatest pressure due to gravity, and the discharge speed is also the fastest. As the asphalt binder decreases, the discharge speed gradually decreases. This results in uneven thickness of the asphalt road during paving, and the overall road surface is uneven, affecting the road quality and providing a bad experience for vehicles and people. In addition, the asphalt binder is pressed on the auger, which can easily cause the auger to get stuck.

[0005] Therefore, this utility model provides an asphalt paving device for highway engineering to solve the above problems. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] This utility model provides an asphalt paving device for highway engineering, which aims to solve the problems of inconsistent paving thickness in existing asphalt paving devices mentioned in the background art.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: an asphalt paving device for highway engineering, comprising a base plate, rollers disposed at four corners of the bottom of the base plate, a spiral feed rod rotatably connected to one end of the base plate, and a flattening mechanism disposed on the side of the base plate near the spiral feed rod. Side panels are disposed on both sides of the top of the base plate corresponding to the direction of travel of the device. Two inclined panels are fixedly disposed inside the side panels, with one side of the inclined panels close to each other forming a funnel shape. A mechanism for controlling the longitudinal flow rate of the asphalt binder is disposed at the bottom of the funnel shape within the inclined panels. The feeding mechanism has a material conveying bin fixedly installed on the top of the base plate corresponding to the inclined panel near the spiral feeding rod. A conveying channel is opened at the bottom of the inclined panel near the spiral feeding rod. The side panel and the material conveying bin are equipped with a material conveying mechanism for uniformly conveying asphalt binder laterally. The feeding mechanism can roughly control the falling speed of the asphalt binder, and the material conveying mechanism can precisely control the paving speed. The material conveying mechanism delivers the asphalt binder to the spiral feeding rod one after another, and then spreads it evenly on the road, reducing the pressure on the spiral feeding rod and making it less likely to get stuck.

[0010] Preferably, the material conveying mechanism includes a drive roller rotatably connected to the inner side of the side panel and the material conveying bin, positioned above the spiral feed rod, a conveyor belt mounted on the drive roller, and push rods arrayed on the conveyor belt. The highest point of the push rods is flush with the bottom of the inclined panel near the spiral feed rod, thereby controlling the feeding speed of the material dispensing mechanism and the transmission speed of the conveyor belt to ensure uniform conveying.

[0011] Preferably, the conveying mechanism further includes a blocking roller rotatably disposed on the inner side of the side panel at the position of the conveying channel. The blocking roller has a plurality of strip teeth arranged in a ring array. The strip teeth extend axially on the outer wall of the blocking roller. When the blocking roller rotates, the strip teeth on it can push large foreign objects back until the asphalt mixture passing through is flat within the interval of the push rod, ensuring the smooth operation of the conveying mechanism.

[0012] Preferably, the feeding mechanism includes a central shaft disposed at the funnel-shaped bottom inside the inclined panel, a rotating ring rotatably sleeved on the central shaft, and protruding strips arranged in a ring array on the rotating ring. The protruding strips extend axially on the outer wall of the rotating ring. A motor is connected to the rotating ring, and the rotation speed of the rotating ring is matched with the running speed of the feeding mechanism. The operation of the feeding mechanism makes it difficult for the asphalt binder to get stuck in the inclined panel and the side panel.

[0013] Preferably, a receiving groove is provided on the side panel corresponding to the position of the feeding mechanism. The feeding mechanism also includes a threaded rod that passes through the end of the central shaft, two guide blocks that are threadedly connected to the threaded rod and move laterally along the receiving groove, and a drive motor fixedly installed inside the receiving groove. One end of the threaded rod is fixedly connected to the output end of the drive motor, and the other end of the threaded rod away from the drive motor is rotatably connected to the inner wall of the receiving groove. The threaded rod is threaded to the central shaft on the inner side of the guide block. The threaded direction of the threaded rod on both sides is opposite with the center of the two inclined plates as the dividing line. The distance between the guide blocks on both sides and the central shaft can be controlled by rotating the threaded rod. When the rotating ring is stopped and the central shaft is brought closer, the rotating rings contact each other, which can pause the conveying of the asphalt mixture and stop the operation of the asphalt paving device.

[0014] (III) Beneficial Effects

[0015] This utility model incorporates a feeding mechanism that feeds the asphalt binder onto a conveying mechanism. The conveying mechanism then evenly delivers the asphalt binder to the auger and onto the surface to be paved. The feeding mechanism can roughly control the falling speed of the asphalt binder, while the conveying mechanism precisely controls the paving speed. The conveying mechanism continuously feeds the asphalt binder to the auger and then onto the road surface, reducing the pressure on the auger and making it less prone to jamming.

[0016] This invention features a blocking roller. As the blocking roller rotates, the strip teeth on it can push back large particles, stones, or other foreign objects mixed in the asphalt mixture until the asphalt mixture passing through is flat within the interval of the push rod, ensuring the smooth operation of the conveying mechanism.

[0017] This invention features a rotating ring with protruding strips that convey asphalt binder downwards. The rotation speed of the rotating ring can be controlled to adjust the speed of the asphalt mixture. The rotation speed of the rotating ring is coordinated with the operating speed of the conveying mechanism, and the operation of the feeding mechanism makes it less likely for the asphalt binder to get stuck in the inclined and side panels. Attached Figure Description

[0018] Figure 1 A front view of an asphalt paving device for highway engineering;

[0019] Figure 2 This is an overall elevation view of an asphalt paving device for highway engineering.

[0020] Figure 3 A cross-sectional view of an asphalt paving device for highway engineering;

[0021] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0022] In the diagram: 1. Base plate; 11. Roller; 12. Spiral feed rod; 2. Flattening mechanism; 3. Side panel; 31. Inclined panel; 311. Conveying channel; 32. Receiving trough; 4. Feeding mechanism; 41. Central shaft; 42. Rotating ring; 421. Protruding bar; 43. Threaded rod; 44. Guide block; 45. Drive motor; 5. Feeding bin; 6. Feeding mechanism; 61. Drive roller; 62. Conveyor belt; 63. Push rod; 64. Blocking roller; 641. Strip tooth. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] This utility model provides an asphalt paving device for highway engineering, referring to... Figures 1 to 3 The device includes a base plate 1, rollers 11 located at the four corners of the bottom of the base plate 1, a spiral feed rod 12 rotatably connected to one end of the base plate 1, and a flattening mechanism 2 located on the side of the base plate 1 near the spiral feed rod 12. The top of the base plate 1 is provided with side panels 3 on both sides corresponding to the direction of travel of the device. Two inclined panels 31 are fixedly provided inside the side panels 3. The inclined panels 31 are funnel-shaped with their sides close to each other. A feeding mechanism 4 for controlling the longitudinal flow speed of asphalt binder is provided at the bottom of the funnel-shaped inclined panels 31. A conveying bin 5 is fixedly provided on the top of the base plate 1 corresponding to the side of the inclined panels 31 near the spiral feed rod 12. A conveying channel 311 is opened at the bottom of the inclined panels 31 near the spiral feed rod 12. A conveying mechanism 6 for uniformly conveying asphalt binder laterally is provided in the side panels 3 and the conveying bin 5.

[0025] Specifically, during asphalt paving, asphalt binder is poured into the funnel-shaped space formed by the side panel 3 and the inclined panel 31. Under gravity, the asphalt binder falls through the feeding mechanism 4 onto the conveying mechanism 6, which then evenly transports it to the position of the spiral feeding rod 12 and onto the ground to be paved. The feeding mechanism 4 can roughly control the falling speed of the asphalt binder, while the conveying mechanism 6 precisely controls the paving speed. The conveying mechanism 6 continuously delivers the asphalt binder to the spiral feeding rod 12 and then spreads it onto the road, reducing the pressure on the spiral feeding rod 12 and making it less likely to get stuck. The flattening mechanism 2 is used to flatten and compact the falling asphalt binder.

[0026] Furthermore, refer to Figure 3 The conveying mechanism 6 includes a drive roller 61 rotatably connected to the inner side of the side panel 3 and the conveying bin 5, positioned above the spiral feed rod 12; a conveyor belt 62 mounted on the drive roller 61; and push rods 63 arrayed on the conveyor belt 62. The highest point of the push rods 63 is flush with the bottom of the inclined panel 31 near the spiral feed rod 12. Asphalt binder is fed onto the conveyor belt 62 by the feeding mechanism 4. The feeding speed of the feeding mechanism 4 and the transmission speed of the conveyor belt 62 are controlled so that the asphalt binder fills the intervals between the push rods 63 on the conveyor belt 62. The drive roller 61 drives the conveyor belt 62 to move, conveying the asphalt binder onto the spiral feed rod 12 and spreading it on the road surface. The bottom 31 of the inclined panel scrapes the asphalt mixture, keeping the asphalt mixture exceeding the push rods 63 inside the two inclined panels 31, so that the conveyor belt 62 conveys evenly.

[0027] Furthermore, refer to Figure 3 The material conveying mechanism 6 also includes a blocking roller 64 rotatably disposed on the inner side of the side panel 3 at the position of the conveying channel 311. The blocking roller 64 has a plurality of strip teeth 641 arranged in a ring array. The strip teeth 641 extend axially on the outer wall of the blocking roller 64. If large particles, stones or other foreign objects are mixed in the asphalt mixture and exceed the height of the push rod 63, they may get stuck at the bottom of the inclined panel 31, causing the material conveying mechanism 6 to run poorly or even get stuck. When the blocking roller 64 rotates, the strip teeth 641 on it can push these large foreign objects back until the asphalt mixture passing through is flat within the interval of the push rod 63, ensuring the smooth operation of the material conveying mechanism 6.

[0028] It is worth noting that, referring to Figures 3 to 4 The feeding mechanism 4 includes a central shaft 41 disposed at the funnel-shaped bottom inside the inclined panel 31, a rotating ring 42 rotatably sleeved on the central shaft 41, and protruding strips 421 arranged in a ring array on the rotating ring 42. The protruding strips 421 extend axially on the outer wall of the rotating ring 42. A motor is connected to the rotating ring 42. When the rotating ring 42 rotates, the protruding strips 421 on the rotating ring 42 convey the asphalt binder downwards. The rotation speed of the rotating ring 42 can be controlled to control the passing speed of the asphalt mixture. The rotation speed of the rotating ring 42 is coordinated with the running speed of the conveying mechanism 6. The operation of the feeding mechanism 4 makes it less likely for the asphalt binder to get stuck in the inclined panel 31 and the side panel 3.

[0029] It should be noted that, referring to Figures 3 to 4The side panel 3 has a receiving groove 32 at the position corresponding to the feeding mechanism 4. The feeding mechanism 4 also includes a threaded rod 43 that passes through the end of the central shaft 41, two guide blocks 44 that are threaded to the threaded rod 43 and move laterally along the receiving groove 32, and a drive motor 45 fixedly installed inside the receiving groove 32. One end of the threaded rod 43 is fixedly connected to the output end of the drive motor 45, and the end of the threaded rod 43 away from the drive motor 45 is rotatably connected to the inner wall of the receiving groove 32. The threaded rod 43 is threaded to the central shaft 41 and is threaded to the inside of the guide blocks 44. The threaded rod 43 has opposite threads on both sides with the center of the two inclined plates 31 as the dividing line. The drive motor 45 drives the threaded rod 43 to rotate. Since the threads at both ends of the threaded rod 43 are opposite, as the threaded rod 43 rotates, the guide blocks 44 on both sides and the central shaft 41 move in opposite directions. By rotating the threaded rod 43, the distance between the guide blocks 44 on both sides and the central shaft 41 can be controlled. Increasing the distance can increase the flow speed of the asphalt binder, and decreasing the distance can decrease the flow speed. When the rotating ring 42 is stopped and the central shaft 41 is brought closer, the rotating ring 42 contacts each other, which can stop the conveying of the asphalt mixture and stop the operation of the asphalt paving device.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A highway engineering asphalt paving device, comprising a bottom plate (1), rollers (11) arranged at the four corners of the bottom of the bottom plate (1), a spiral feeding rod (12) rotatably connected to one end of the bottom plate (1), and a flattening mechanism (2) arranged on one side of the bottom plate (1) close to the spiral feeding rod (12). characterized in that The top of the bottom plate (1) is provided with side panels (3) corresponding to the two sides in the driving direction of the device, two inclined panels (31) are fixedly arranged inside the side panels (3), one side of the inclined panels (31) is funnel-shaped, a feeding mechanism (4) for controlling the longitudinal flow speed of asphalt binder is arranged at the funnel-shaped bottom of the inclined panels (31), a feeding bin (5) is fixedly arranged on the top of the bottom plate (1) corresponding to the side of the inclined panels (31) close to the spiral feeding rod (12), a conveying channel (311) is formed in the bottom of the inclined panel (31) on the side close to the spiral feeding rod (12), and a feeding mechanism (6) for uniformly conveying asphalt binder in the transverse direction is arranged in the side panels (3) and the feeding bin (5).

2. A highway engineering asphalt paving device according to claim 1, characterized in that: The feeding mechanism (6) comprises drive rollers (61) rotatably connected to the inner side of the side panels (3) and the feeding bin (5) above the spiral feeding rod (12), conveying belts (62) sleeved on the drive rollers (61), and push rods (63) arranged in an array on the conveying belts (62), and the highest point of the push rods (63) is flush with the bottom of the inclined panel (31) on the side close to the spiral feeding rod (12).

3. A highway engineering asphalt paving device according to claim 2, characterized in that: The feeding mechanism (6) further comprises a blocking roller (64) rotatably arranged in the inner side of the side panels (3) at the position of the conveying channel (311), a plurality of strip-shaped teeth (641) are annularly arranged on the blocking roller (64), and the strip-shaped teeth (641) extend in the axial direction on the outer wall of the blocking roller (64).

4. A highway engineering asphalt paving device according to claim 3, characterized in that: The feeding mechanism (4) comprises a central shaft (41) arranged at the funnel-shaped bottom of the inclined panel (31), a rotating ring (42) rotatably sleeved on the central shaft (41), and a plurality of protruding strips (421) arranged in an annular array on the rotating ring (42), the protruding strips (421) extend in the axial direction on the outer wall of the rotating ring (42), and a motor is arranged outside the rotating ring (42).

5. A highway engineering asphalt paving device according to claim 4, characterized in that: The side panel (3) is provided with a containing groove (32) corresponding to the position of the discharging mechanism (4), the discharging mechanism (4) further comprises a threaded rod (43) penetrating through the end of the central shaft (41) in sequence, two guide blocks (44) threadedly connected on the threaded rod (43) and moving transversely along the containing groove (32), and a driving motor (45) fixedly arranged inside the containing groove (32), one end of the threaded rod (43) is fixedly connected to the output end of the driving motor (45), the end of the threaded rod (43) away from the driving motor (45) is rotationally connected to the inner wall of the containing groove (32), the threaded rod (43) is threadedly connected with the central shaft (41) on the inner side of the guide block (44), and the threaded rod (43) is opposite in the threaded direction on the two sides of the center of the two inclined panels (31).

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