Asphalt concrete paver

Abstract

The invention provides an asphalt concrete paver, and relates to the technical field of pavers. The paver comprises a vehicle body, a first driving mechanism, a paving mechanism, a first connecting mechanism and a discharging mechanism, the vehicle body comprises a hopper. The first driving mechanism comprises a supporting frame and a driving lead screw which is arranged in the supporting frame in a penetrating mode and driven by a first motor to rotate. The paving mechanism comprises an ironing plate connected with the driving screw rod; the first connecting mechanism comprises a connecting plate connected to a rod body of the driving screw rod, and the other end of the connecting plate is connected with the ironing plate; the discharging mechanism is arranged at the bottom of the car hopper and comprises a first rotating shaft and a plurality of blades, the first rotating shaft penetrates through the discharging channel in the direction perpendicular to the bottom of the car hopper, the blades surround the first rotating shaft and are located in the discharging channel, and one end of the first rotating shaft is connected with the driving lead screw through a linkage structure; and the driving screw rod is used for driving the ironing plate to move and driving the first rotating shaft to rotate through self rotation, so that the paving uniformity and the discharging speed uniformity can be synchronously improved.

Description

Technical Field

[0001] This disclosure relates to the field of paver technology, and more specifically, to an asphalt concrete paver. Background Technology

[0002] An asphalt concrete paver is a machine that spreads asphalt mixture evenly on the road base and performs preliminary compaction and leveling. The working process of an asphalt concrete paver includes receiving asphalt mixture from dump trucks or material transfer vehicles, spreading the material laterally through a auger distributor, and performing preliminary compaction and leveling of the material through a screed system to form a road asphalt surface layer that meets the actual requirements.

[0003] Currently, the inventors have discovered a correlation between the uniformity of material output from the paver's discharge pipe and the uniformity of asphalt mixture compaction by the screed during the use of existing pavers. Uneven material output makes it difficult for the screed to compact the mixture evenly, which in turn creates an uneven surface layer. This also affects the output speed and uniformity of the material, and the protrusions on the surface layer can clog the discharge port, causing asphalt concrete to scatter everywhere. Currently, no paver can simultaneously solve the problem of surface layer compaction uniformity through the screed system and the material output system.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0005] In view of this, an asphalt concrete paver is provided, which can simultaneously improve the paving uniformity and discharge uniformity of asphalt concrete by synchronously controlling the screed and the discharge mechanism, thereby further improving the paving quality.

[0006] Other features and advantages of this disclosure will become apparent from the following detailed description, or may be learned in part from practice of this disclosure.

[0007] According to one aspect of this disclosure, an asphalt concrete paver is provided, comprising:

[0008] The vehicle body has a cargo bed for carrying asphalt concrete;

[0009] The first drive mechanism includes a support frame and a drive screw passing through the support frame. The support frame is connected to a first side of the truck bed, and the drive screw is parallel to the first side. The drive screw is driven to rotate by a first motor.

[0010] The paving mechanism includes a screed, which is located on the same side of the hopper as the first drive mechanism, and the screed is connected to the drive screw.

[0011] A first connecting mechanism, comprising a connecting plate, one end of which is connected to the body of the drive screw, and the other end of which is connected to the ironing plate;

[0012] A discharge mechanism is provided at the bottom of the truck bed and near the first side. The discharge mechanism includes a discharge channel through which the asphalt concrete inside the truck bed flows toward the screed.

[0013] The discharge mechanism further includes a first rotating shaft and a plurality of blades surrounding the first rotating shaft and located within the discharge channel. The first rotating shaft passes through the discharge channel in a direction perpendicular to the bottom of the cart. One end of the first rotating shaft is connected to the drive screw via a linkage structure. The drive screw is used to rotate itself to simultaneously drive the ironing plate to move in a direction parallel to the first side and to drive the first rotating shaft to rotate.

[0014] In an exemplary embodiment of this disclosure, the discharge mechanism further includes an extension plate, which is movably connected to the outlet of the discharge channel; the top surface of the extension plate is provided with a plurality of diverter plates arranged at intervals, and a flow channel is formed between two adjacent diverter plates, the extension direction of each flow channel is the same as the outlet axis direction of the discharge channel; there is an included angle between the surfaces of two adjacent diverter plates.

[0015] In an exemplary embodiment of this disclosure, two fixing plates are provided at the bottom of the outlet of the discharge channel, and a connecting frame and a spring assembly are provided between the two fixing plates. One end of the connecting frame is connected to the extension plate. The spring assembly includes a first spring and a first sliding shaft. The first sliding shaft passes through the connecting frame and is connected to the fixing plate. The first spring is disposed between the connecting frame and the fixing plate.

[0016] The first rotating shaft has a first cam at one end away from the bottom of the truck bed. The first rotating shaft drives the first cam to rotate, causing the first cam to intermittently push the connecting frame to move.

[0017] In one exemplary embodiment of this disclosure, the linkage structure includes a first pulley and a second pulley. The first pulley is connected to the bottom end of the drive screw, and the second pulley is connected to the top end of the first rotating shaft. The first pulley and the second pulley are connected by a transmission belt.

[0018] In one exemplary embodiment of this disclosure, the first connecting mechanism further includes a slider, which is disposed within the support frame and fits against the inner wall of the support frame, and the driving screw passes through the slider; a limiting groove is formed on the outer wall of the slider, and one end of the connecting plate is fitted into the limiting groove.

[0019] In an exemplary embodiment of this disclosure, a first groove is provided on the side of the slider away from the limiting groove, and an adjustment component is provided in the first groove. The adjustment component includes a locking block, which is disposed in the first groove and slidably connected to the slider. A second spring is provided between one end of the locking block and the slider. A slot is provided on the inner wall of the support frame, and the other end of the locking block is configured as an inclined surface and extends into the slot.

[0020] In one exemplary embodiment of this disclosure, the paving mechanism further includes a second connecting mechanism, the second connecting mechanism including a fixed seat connected to the bottom surface of the connecting plate; a sleeve is sleeved on the fixed seat, and the sleeve is slidably connected to the fixed seat;

[0021] A limiting block is provided on the inner wall side of the top end of the sleeve, and a limiting ring is provided on the outer wall of the fixing seat. The limiting block and the limiting ring are connected in a cooperating manner, and there is a gap between the limiting block and the limiting ring in a direction parallel to the axis of the sleeve.

[0022] The bottom of the sleeve is fixedly connected to a box body, the box body includes a partition, the bottom surface of the partition has two second sliding shafts symmetrically arranged, each second sliding shaft is respectively fitted with a third spring, one end of the third spring is fixed to the inner wall of the box body, the two second sliding shafts are respectively inserted into two parallel sliding plates, the other end of the third spring is fixedly connected to the sliding plate, and the bottom of the two sliding plates is fixedly connected to the ironing board.

[0023] The second connecting mechanism includes a second rotating shaft, which is disposed inside the sleeve and passes through the box body. One end of the second rotating shaft is connected to the fixed base through a second motor, and the other end of the second rotating shaft is connected to a second cam, which is located between the two sliding plates.

[0024] In one exemplary embodiment of this disclosure, the second connecting mechanism further includes a top plate located on the top surface of the partition, the top plate being sleeved on the second rotating shaft, two first top blocks being symmetrically fixedly connected to the top of the top plate, and two second top blocks being symmetrically fixedly connected to the top of the inner wall of the box, the top of the first top block being a first inclined surface, and the bottom of the second top block being provided with a second inclined surface that cooperates with the first inclined surface.

[0025] In an exemplary embodiment of this disclosure, both ends of the ironing plate have arc-shaped surfaces in the length direction, and grooves are respectively provided on both sides of the ironing plate. Multiple teeth are arranged at equal intervals inside each groove, and the top of each tooth is set as an inclined surface.

[0026] In the width direction, the ironing board is provided with side plates on both sides, and the outer walls of both side plates are arc-shaped surfaces.

[0027] In an exemplary embodiment of this disclosure, the top surface of the ironing board is further provided with two arc-shaped guide plates in the length direction. The two arc-shaped guide plates are respectively provided on both ends of the ironing board. On the side of the arc-shaped guide plate away from the axis of the ironing board, a plurality of partition plates are arranged at intervals, and a guide groove is formed between two adjacent partition plates.

[0028] The asphalt concrete paver provided in this disclosure connects the first drive mechanism and the paving mechanism through a first linkage mechanism. The first drive mechanism is connected to the discharge mechanism. After the drive screw in the first drive mechanism is driven to rotate by the first motor, the drive screw can simultaneously control the rotation of the first rotating shaft in the discharge mechanism and the movement of the screed in the paving mechanism, so that the screed mechanism and the discharge mechanism are linked. Through the first drive structure, the compaction uniformity of the asphalt concrete by the screed mechanism and the discharge uniformity of the discharge mechanism can be controlled simultaneously. Compared with existing pavers that control the discharge speed or the screed alone, this paver can improve the discharge uniformity and the surface screed uniformity at the same time. From the start of asphalt mixture discharge until the surface is compacted, it ensures the surface paving quality in each link and step of the entire paving process, preventing paving defects in the previous step from accumulating and amplifying the paving defects in the next step, thereby affecting the paving quality of the next step, and further improving the paving quality and construction efficiency of the asphalt concrete surface layer.

[0029] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0030] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0031] Figure 1 This is a cross-sectional view of an asphalt concrete paver according to an exemplary embodiment of the present disclosure.

[0032] Figure 2 This is a schematic diagram of the overall structure of an asphalt concrete paver according to an exemplary embodiment of the present disclosure.

[0033] Figure 3 This is a bottom view of an asphalt concrete paver according to an exemplary embodiment of the present disclosure.

[0034] Figure 4 This is a schematic diagram of the discharge structure of an asphalt concrete paver according to an exemplary embodiment of the present disclosure.

[0035] Figure 5 In exemplary embodiments of this disclosure Figure 3 A magnified view of part A in the image.

[0036] Figure 6 In exemplary embodiments of this disclosure Figure 1 A magnified view of part B in the image.

[0037] Figure 7 This is a schematic diagram of the structure of a first connecting mechanism in an exemplary embodiment of the present disclosure.

[0038] Figure 8 This is a partial structural cross-sectional view of a first connecting mechanism in an exemplary embodiment of the present disclosure.

[0039] Figure 9 In exemplary embodiments of this disclosure Figure 3 A magnified view of part C in the image.

[0040] Figure 10 In exemplary embodiments of this disclosure Figure 1 A magnified view of part D in the image.

[0041] Figure 11 This is a schematic diagram of the structure of an ironing board according to an exemplary embodiment of the present disclosure.

[0042] Figure 12 This is a schematic diagram of an asphalt concrete paver operating on a slope, as shown in an exemplary embodiment of this disclosure.

[0043] Figure 13 This is a flowchart illustrating a method of using an asphalt concrete paver according to an exemplary embodiment of this disclosure.

[0044] The reference numerals in the attached figures are explained as follows:

[0045] 1. Vehicle body; 2. Cargo bed; 3. Support frame; 4. First motor; 5. Drive screw; 6. Slider; 7. Second spring; 8. Locking block; 9. Locking groove; 10. Connecting plate; 11. Fixing seat; 12. Sleeve; 13. Slide groove; 14. Limiting ring; 15. Second motor; 16. Second rotating shaft; 17. Top plate; 18. First top block; 19. Second top block; 20. Box body; 21. Second sliding shaft; 22. Third spring; 23. Slide plate; 24. Ironing plate; 25. Second cam; 26. Groove; 27. Tooth; 28. Arc 29. Guide plate; 30. Divider plate; 31. Side plate; 32. Discharge channel; 33. Outlet of discharge channel; 34. Fixing plate; 35. First sliding shaft; 36. First spring; 37. Connecting frame; 38. Extension plate; 39. First rotating shaft; 40. First cam; 41. Blade; 42. Diverter plate; 43. First pulley; 44. Second pulley; 45. Transmission belt; 46. Limiting groove; 47. First groove; 48. First inclined surface; 49. Second inclined surface; 50. Guide groove; 100. First side surface; 11. Slope. Detailed Implementation

[0046] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore detailed descriptions of them will be omitted. Furthermore, the drawings are merely illustrative of this disclosure and are not necessarily drawn to scale.

[0047] Although relative terms such as "up" and "down" are used in this specification to describe the relative relationship of one component of an icon to another, these terms are used only for convenience, such as according to the orientation of the examples shown in the accompanying drawings. It is understood that if the device of the icon is flipped upside down, the component described as "up" will become the component described as "down." When a structure is "up" of another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is "directly" mounted on the other structure, or that the structure is "indirectly" mounted on the other structure through another structure.

[0048] The terms “a,” “one,” “the,” “the,” and “at least one” are used to indicate the presence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended inclusion and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms “first,” “second,” and “third,” etc., are used only as markers and are not a limitation on the number of objects.

[0049] In related technologies, asphalt panels (surface layers) are impermeable panels formed by spreading and compacting asphalt concrete. During use, they need to withstand the repeated loads of vehicles and the long-term effects of environmental factors. Therefore, while asphalt concrete has a certain load-bearing capacity, it must also have good durability to resist the effects of natural factors. The quality of asphalt panels during the paving process directly affects the durability of the panels.

[0050] In existing paving equipment, uneven asphalt concrete discharge speed at the outlet can cause it to scatter outside the screed's paving area or accumulate at the outlet, resulting in an uneven surface. Furthermore, due to the high viscosity of asphalt concrete, some adheres to the screed. As the screed moves, previously laid asphalt concrete is easily pulled up by the screed, causing pits and unevenness in the asphalt concrete surface. The screed, also sticky with asphalt concrete, cannot evenly spread subsequent batches. When the screed is retrieved after paving, some asphalt concrete remains on its bottom, affecting the compaction quality of the surface. Currently, the functions of the screed and the outlet in existing paving equipment are often independent; the discharge speed and compaction speed are set independently. However, both are related to the paving quality. Considering only one factor's impact on paving quality is not ideal for improving overall paving quality.

[0051] Based on this, the present disclosure provides an asphalt concrete paver, such as... Figure 1 As shown, combined with Figures 2 to 12 The asphalt concrete paver includes: a vehicle body 1, a first drive mechanism, a paving mechanism, a first connecting mechanism, and a discharge mechanism.

[0052] The vehicle body 1 has a truck bed 2 for carrying asphalt concrete; the first drive mechanism includes a support frame 3 and a drive screw 5 passing through the support frame 3. The support frame 3 is connected to the first side 50 of the truck bed 2, and the drive screw 5 is parallel to the first side 50. The drive screw 5 is driven to rotate by a first motor 4; the paving mechanism includes a screed 24, which is located on the same side of the truck bed 2 as the first drive mechanism, and is connected to the drive screw 5; the first connecting mechanism includes a connecting plate 10, one end of which is connected to the shaft of the drive screw 5, and the other end of which is connected to the screed 24.

[0053] The discharge mechanism is located at the bottom of the bucket 2 and close to the first side 50. The discharge mechanism includes a discharge channel 31 through which the asphalt concrete in the bucket 2 flows toward the screed 24. The discharge mechanism also includes a first rotating shaft 38 and multiple blades 40 surrounding the first rotating shaft 38 and located in the discharge channel 31. The first rotating shaft 38 passes through the discharge channel 31 in a direction perpendicular to the bottom of the bucket 2. One end of the first rotating shaft 38 is connected to the drive screw 5 through a linkage structure. The drive screw 5 is used to rotate itself to drive the screed 24 to move in a direction parallel to the first side 50 and to drive the first rotating shaft 38 to rotate.

[0054] The asphalt concrete paver provided in this disclosure connects the first drive mechanism and the paving mechanism through a first linkage mechanism. The first drive mechanism is connected to the discharge mechanism. After the drive screw 5 in the first drive mechanism is driven to rotate by the first motor 4, the drive screw 5 can simultaneously control the rotation of the first rotating shaft 38 in the discharge mechanism and the movement of the screed 24 in the paving mechanism, so that the screed mechanism and the discharge mechanism are linked. Through the first drive structure, the compaction uniformity of the asphalt concrete by the screed mechanism and the discharge uniformity of the discharge mechanism can be controlled simultaneously. Compared with existing pavers that control the discharge speed or the screed 24 separately, this paver can improve the discharge uniformity and the surface screed uniformity at the same time, ensuring the entire paving process from the start of asphalt mixture discharge until the surface is compacted. The surface paving quality at each stage and step of the process is improved to prevent paving defects in the previous step from accumulating and amplifying in the next step, thus affecting the paving quality of the next step and further improving the paving quality and construction efficiency of the asphalt concrete surface layer. In addition, multiple blades 40 are provided on the circumferential position of the first rotating shaft 38 of the discharge structure. When the first driving mechanism drives the first rotating shaft 38 to rotate, the first rotating shaft 38 drives the multiple blades 40 to rotate. The blades 40 reduce the flow speed of the asphalt concrete in the discharge channel 31, preventing the asphalt concrete from flowing out all at once and scattering everywhere, leaving the paving range of the screeding mechanism. In addition, the discharge mechanism can also prevent the discharge port from being blocked due to excessive discharge speed, further improving the uniformity of discharge.

[0055] It should be noted that in this disclosure, such as Figure 1As shown, the first side 50 of the truck bed 2 can refer to a side located at the rear of the vehicle body 1. Typically, the first side 50 is perpendicular or approximately perpendicular to the bottom surface of the truck bed 2. However, when the truck bed 2 is inverted trapezoidal or other shapes, the first side 50 and the bottom surface of the truck bed 2 may not be perpendicular. Furthermore, in this disclosure, a component parallel to the first side 50 can refer to a component whose axis or centerline is parallel to the first side 50 and perpendicular to the bottom surface of the truck bed 2. This will not be emphasized again in the following embodiments. In this disclosure, the parallelism between the first side 50 and the bottom surface of the truck bed 2 is used as an example. When the truck bed 2 has other shapes, the specific placement and connection relationships of the various mechanisms provided in this disclosure can be adaptively adjusted, all within the scope of protection of this disclosure.

[0056] The various parts of the asphalt concrete paver provided in the embodiments of this disclosure will now be described in detail with reference to the accompanying drawings:

[0057] In the embodiments provided in this disclosure, such as Figure 2 As shown, combined with Figure 1 The paver includes a vehicle body 1.

[0058] The vehicle body 1 has a bucket 2 for carrying asphalt concrete. The vehicle body 1 may also include a drive system, etc., which enables the paver to move and work independently. For example, the drive system can be a tracked drive system or a wheeled drive system to adapt to different paving needs. Although the accompanying drawings provided in this disclosure use a wheeled drive system as an example, the vehicle body 1 of this disclosure is not limited to this. When the vehicle body 1 has other types of drive systems, the setting positions of each mechanism can be adapted to suit the drive systems of different pavers.

[0059] In some embodiments, since asphalt concrete has a certain viscosity, in order to facilitate the flow of asphalt concrete from the hopper 2 into the discharge channel 31, the bottom wall of the hopper 2 can have a certain angle with the horizontal plane, and the opening of this angle can gradually decrease in the direction close to the discharge channel 31, so that the asphalt concrete can flow to a position near the discharge channel 31 by its own gravity. In addition, the above-mentioned effect can also be achieved by controlling the hopper 2 to tilt at a certain angle relative to the horizontal plane.

[0060] In the embodiments provided in this disclosure, reference is made to Figure 1 , combined Figure 3 The paver includes a first drive mechanism.

[0061] The first drive mechanism includes a support frame 3, a drive screw 5, and a first motor 4. The support frame 3 is connected to the first side 50 of the truck bed 2. The drive screw 5 passes through the support frame 3 in a direction parallel to the first side 50. The first motor 4 is fixedly connected to the top of the support frame 3. The output shaft of the first motor 4 is connected to one end of the drive screw 5. After the first motor 4 is started, the first motor 4 can drive the drive screw 5 to rotate clockwise or counterclockwise.

[0062] The support frame 3 can be a frame with a cavity or a cavity with a cavity. The support frame 3 can provide support and fixation for components such as the drive screw 5 and the first motor 4. The structural parameters such as the length and width of the support frame 3 can be determined according to the positional relationship of the drive screw 5, the first connecting mechanism, and the paving mechanism to ensure that the structural parameters of the support frame 3 can guarantee the correct assembly relationship between the various mechanisms.

[0063] In the embodiments provided in this disclosure, such as Figures 7 to 8 As shown, combined with Figure 1 The paver includes a first connecting mechanism.

[0064] refer to Figure 1 The first connecting mechanism includes a connecting plate 10. The plate body of the connecting plate 10 can be set parallel to the bottom surface of the truck bed 2 or the ground, that is, the extension direction of the connecting plate 10 can be the same as the length direction of the truck bed 2, so as to ensure that the connecting plate 10 can provide the correct working position for the ironing plate 24. One end of the connecting plate 10 is connected to the rod body of the drive screw 5, and the other end of the connecting plate 10 is connected to the ironing plate 24.

[0065] refer to Figure 7 One end of the connecting plate 10 is connected to the rod body of the drive screw 5. The first connecting mechanism includes a slider 6, which is disposed inside the support frame 3 and fits against the inner wall of the support frame 3. The drive screw 5 passes through the slider 6, and the axis of the drive screw 5 and the axis of the slider 6 can coincide to avoid the slider 6 from rotating eccentrically when the drive screw 5 rotates, thus affecting the connection between the first connecting mechanism and the first driving mechanism.

[0066] A limiting groove 45 is formed on the outer side wall of the slider 6. One end of the connecting plate 10 is fitted into the limiting groove 45 to fix one end of the connecting plate 10 in the limiting groove 45. The slider 6 can be a dumbbell-shaped structure, and one end of the connecting plate 10 can have a groove structure that matches the dumbbell-shaped structure of the slider 6. By inserting the groove structure of the connecting plate 10 into the recessed part of the dumbbell-shaped slider 6, that is, by inserting the connecting plate 10 into the limiting groove 45, the connecting plate 10 is fixed on the slider 6 through its groove structure.

[0067] refer to Figure 8A first groove 46 is provided on the side of the slider 6 away from the limiting groove 45. An adjustment component is provided in the first groove 46. The adjustment component includes a locking block 8. The locking block 8 is provided in the first groove 46 and is slidably connected to the slider 6. A second spring 7 is provided between one end of the locking block 8 and the slider 6. A slot 9 is provided on the inner wall of the support frame 3. The other end of the locking block 8 is set as an inclined surface and extends into the slot 9.

[0068] One side of the locking block 8 is an inclined surface, and the other side of the locking block 8 is a flat surface. When the locking block 8 rotates with the drive screw 5, the shape of the different sides of the locking block 8 and the cooperation with the slot 9 can be used to control the slider 6 to be located at different positions of the support frame 3, thereby controlling the position adjustment of the connecting plate 10. In one embodiment, the drive screw 5 rotates simultaneously, causing the slider 6 and the locking block 8 to rotate counterclockwise. When the locking block 8 rotates to the position of the locking groove 9, under the action of the second spring 7, the locking block 8 moves into the locking groove 9. As the drive screw 5 continues to rotate, the straight surface on one side of the locking block 8 presses against the inner wall of the locking groove 9 and cannot rotate. Thus, when the drive screw 5 rotates counterclockwise, it causes the slider 6 to move back and forth up and down within the support frame 3, causing the connecting plate 10 to move back and forth up and down. The drive screw 5 rotates simultaneously, causing the slider 6 and the locking block 8 to rotate clockwise. When the locking block 8 rotates to the position of the locking groove 9, under the action of the second spring 7, the locking block 8 moves into the locking groove 9. As the drive screw 5 continues to rotate clockwise, the inclined surface on the other side of the locking block 8 presses against the inner wall of the locking groove 9. Under the pressure of the locking groove 9, the locking block 8 moves into the slider 6 and presses the second spring 7 again. Thus, when the drive screw 5 rotates clockwise, it causes the slider 6 to rotate within the support frame 3.

[0069] In the embodiments provided in this disclosure, such as Figures 10 to 11 As shown, combined with Figures 1 to 3 The paver includes a paving mechanism.

[0070] refer to Figure 1 The paving mechanism includes a screed 24 and a second connecting mechanism. The screed 24 and the first driving mechanism are located on the same side of the hopper 2. The screed 24 and the driving screw 5 are connected through the second connecting mechanism.

[0071] In some embodiments, reference Figure 10 The second connecting mechanism includes a fixed base 11, which is connected to the bottom surface of the connecting plate 10. A sleeve 12 is fitted onto the fixed base 11, and the sleeve 12 is slidably connected to the fixed base 11. A limit block is provided on the inner wall side of the top end of the sleeve 12, and a limit ring 14 is provided on the outer wall of the fixed base 11. The limit block and the limit ring 14 are connected in a cooperating manner, and there is a gap between the limit block and the limit ring 14 in the direction parallel to the axis of the sleeve 12.

[0072] The bottom of the sleeve 12 is fixedly connected to a box body 20. The box body 20 includes a partition. The bottom surface of the partition has two symmetrically arranged second sliding shafts 21. Each second sliding shaft 21 is fitted with a third spring 22. One end of the third spring 22 is fixed to the inner wall of the box body 20. The two second sliding shafts 21 are respectively inserted into two parallel sliding plates 23. The other end of the third spring 22 is fixedly connected to the sliding plate 23. The bottom of the two sliding plates 23 is fixedly connected to the ironing board 24.

[0073] refer to Figure 11 The second connecting mechanism also includes a second rotating shaft 16, which is disposed inside the sleeve 12 and passes through the housing 20. One end of the second rotating shaft 16 is connected to the fixed base 11 via a second motor 15, and the other end of the second rotating shaft 16 is connected to a second cam 25, which is located between two sliding plates 23. The top and bottom of the housing 20 are provided with through slots that mate with the second rotating shaft 16. The inner diameter of the through slots can be larger than the outer diameter of the second rotating shaft 16 to ensure that the second rotating shaft 16 can rotate within the through slots.

[0074] The working process of the second connecting mechanism is as follows: When the screed plate 24 is pressing the asphalt concrete, the second motor 15 is started, which drives the second rotating shaft 16 to rotate, causing the second cam 25 to rotate. When the protruding end of the second cam 25 rotates to one side, it pushes the slide plate 23 to move to the same side, pressing the third spring 22. As the second cam 25 continues to rotate, when the second cam 25 disengages from the slide plate 23, the slide plate 23 is gradually reset under the action of the third spring 22. When the protruding end of the second cam 25 rotates to the other side, it similarly pushes the slide plate 23 to move to the same side. This process is repeated. As the second rotating shaft 16 rotates, the slide plate 23 is driven to swing back and forth, causing the screed plate 24 and the slide plate 23 to swing back and forth in the same direction. Through the continuous swing of the screed plate 24, the asphalt concrete can be better flattened. The continuous swing of the screed plate 24 can also prevent the compacted asphalt concrete from being pulled up, effectively preventing the asphalt concrete from sticking to the screed plate 24.

[0075] In some embodiments, reference Figure 10 The second connecting mechanism also includes a top plate 17 located on the top surface of the partition. The top plate 17 is sleeved on the second rotating shaft 16. Two first top blocks 18 are symmetrically fixedly connected to the top of the top plate 17, and two second top blocks 19 are symmetrically fixedly connected to the top of the inner wall of the box 20. The top of the first top block 18 is a first inclined surface 47, and the bottom of the second top block 19 is provided with a second inclined surface 48 that cooperates with the first inclined surface 47.

[0076] The working process of the second connecting mechanism is as follows: When the screed plate 24 moves downward to begin compacting the asphalt concrete, the asphalt concrete at the bottom of the screed plate 24 compresses the screed plate 24, causing it to move upward, which in turn causes the box body 20 to move upward, which in turn causes the sleeve 12 to move upward, which in turn causes the limiting ring 14 to move upward, so that the limiting ring 14 presses against the top of the inner wall of the chute 13. After the top of the limiting ring 14 is pressed, the screed plate 24 begins to compact the asphalt concrete. At the same time as the box body 20 moves upward, it also causes the second top block 19 to move upward, causing the second top block 19 to be misaligned with the first top block 18. After the paving operation is completed, the connecting plate 10 is controlled to move upward by the first motor 4, causing the screed plate 24 to move downward under the action of gravity. The screed plate 24 causes the sleeve 12 and the box body 20 to move downward, so that the limiting ring 14 presses against the bottom of the inner wall of the chute 13. After the box body 20 moves downward, the second top block 19 moves to the same position as the first top block 18. On the horizontal plane, the second motor 15 is started again, driving the top plate 17 to rotate, causing the first top block 18 to rotate. When the first top block 18 rotates to a position close to the second top block 19, under the squeezing action of the first top block 18, it pushes the second top block 19 to move upward, driving the box body 20 to move upward, and causing the screed 24 to move upward. When the first top block 18 rotates to a position away from the second top block 19, it loses the squeezing action of the first top block 18, and under the action of gravity, it drives the screed 24 to vibrate downward. This process is repeated. After the second motor 15 is started, it can drive the screed 24 to vibrate downward continuously. Combined with the second connecting mechanism, the screed 24 can be continuously oscillated. Through the continuous downward vibration and continuous oscillation of the screed 24, the asphalt concrete adhering to the screed 24 can be shaken off, preventing the asphalt concrete from drying on the screed 24 and affecting the next paving operation of the screed 24, thereby improving the overall paving quality throughout the paving process.

[0077] In some embodiments, reference Figure 10 In the length direction, both ends of the ironing plate 24 have arc-shaped surfaces, and grooves 26 are respectively provided on both sides of the ironing plate 24. Multiple teeth 27 are arranged at equal intervals inside each groove 26, and the top of each tooth 27 is set as an inclined surface. In the width direction, side plates 30 are respectively provided on both sides of the ironing plate 24, and the outer walls of the two side plates 30 are arc-shaped surfaces.

[0078] The working process of the screed 24 in the above embodiment is as follows: When the screed 24 continuously swings to compact the asphalt concrete along its length, the asphalt concrete is wrapped by two grooves 26 symmetrically arranged on both sides of the screed 24 along its length. This allows the asphalt concrete to slide down along the inclined surface at the top of the teeth 27 and through the straight surface at the bottom of the teeth 27, preventing the asphalt concrete from flowing upward. This prevents the asphalt concrete from overflowing onto the top surface of the screed 24 or spilling out of the paving area during the compaction process. This allows the asphalt concrete to be better compacted at the bottom of the screed 24, ensuring the paving thickness of the panel and making full use of the asphalt concrete. In the width direction of the screed 24, side plates 30 are respectively set on both sides of the screed 24. The side plates 30 wrap the asphalt concrete on both sides of the screed 24. During the compaction of the asphalt concrete by the screed 24, the asphalt concrete is prevented from overflowing into areas outside the paving range and thus leaving the compaction range of the screed 24. At the same time, guided by the arc-shaped surface of the outer wall of the side plate 30, the asphalt concrete can flow to the bottom of the screed 24, which is convenient for the screed 24 to compact it and ensure the thickness of the panel and the paving quality.

[0079] In some embodiments, reference Figure 11 Along its length, the top surface of the screed 24 is also provided with two arc-shaped guide plates 28, which are respectively located at both ends of the screed 24. On the side of the arc-shaped guide plates 28 away from the axis of the screed 24, multiple spacer plates 29 are arranged at intervals, forming guide grooves 49 between adjacent spacer plates 29. The arc-shaped guide plates 28 on the screed 24 act as a barrier to prevent asphalt concrete from sliding onto the top of the screed 24. Furthermore, the arc-shaped surfaces of the guide plates 28 guide the asphalt concrete, allowing it to flow to the bottom of the screed 24. The guide grooves 49 break up any accumulated asphalt concrete, preventing it from accumulating and affecting the paving quality of the panel.

[0080] In the embodiments provided in this disclosure, such as Figure 4 and Figure 5 As shown, combined with Figures 1 to 3 The paver includes a material discharge mechanism.

[0081] refer to Figure 4The discharge mechanism is located at the bottom of the hopper 2 and near the first side 50. The discharge mechanism includes a discharge channel 31, through which the asphalt concrete in the hopper 2 flows towards the screed 24. The inlet of the discharge channel 31 can be located at the top of the hopper 2. The asphalt concrete flows into the discharge channel 31 through the inlet. To control the flow of asphalt concrete in the discharge channel 31, an electrically controlled valve can be installed at the inlet. The electrically controlled valve can be used to open and close the flow of asphalt concrete, thus initially controlling the total amount of asphalt concrete in the discharge channel 31.

[0082] The discharge channel 31 may include a vertical section and a horizontal section. The vertical section is directly connected to the bottom of the hopper 2, and the inlet is located at the end of the vertical section. The horizontal section is interconnected with the vertical section, and the outlet is located at the end of the horizontal section away from the vertical section. That is, after the asphalt concrete enters the vertical section through the inlet, it enters the horizontal section and flows towards the screed 24 through the outlet. It should be noted that, due to the viscosity of asphalt concrete, the horizontal section within the discharge channel 31 does not need to be strictly horizontal, but can have a certain angle with the horizontal direction, so that the asphalt concrete can use its own gravity to accelerate the flow within the horizontal section, avoiding the asphalt concrete adhering or clogging within the discharge channel 31.

[0083] Refer again Figure 4 The discharge mechanism includes a first rotating shaft 38 and multiple blades 40. The multiple blades 40 surround the first rotating shaft 38 and are located in the discharge channel 31. The first rotating shaft 38 passes through the discharge channel 31 in a direction perpendicular to the bottom of the hopper 2. One end of the first rotating shaft 38 is connected to the drive screw 5 through a linkage structure. The drive screw 5 is used to rotate itself to drive the ironing plate 24 to move in a direction parallel to the first side 50 and to drive the first rotating shaft 38 to rotate.

[0084] Each blade 40 can have an arc-shaped surface, and the curvature direction of the arc-shaped surface of each blade 40 can be the same, so that two adjacent blades 40 form a flow channel for asphalt concrete, and the flow velocity of asphalt concrete flowing out from different flow channels is approximately the same, avoiding the impact of uneven asphalt concrete flowing out from different flow channels on the compaction quality of the screed 24.

[0085] like Figure 6As shown, the linkage structure includes a first pulley 42 and a second pulley 43. The first pulley 42 is connected to the bottom end of the drive screw 5, and the second pulley 43 is connected to the top end of the first rotating shaft 38. The first pulley 42 and the second pulley 43 are connected by a transmission belt 44. The rotation of the drive screw 5 simultaneously drives the first pulley 42 to rotate, which in turn drives the transmission belt 44 to rotate, which in turn drives the second pulley 43 to rotate, thereby causing the first rotating shaft 38 to rotate. By controlling the rotation speed of the first rotating shaft 38 through the first drive mechanism, the flow rate of the asphalt concrete can be controlled.

[0086] The working process of the above-mentioned discharge mechanism is as follows: After adjusting the height of the screed 24, the first motor 4 controls the drive screw 5 to rotate clockwise. With the help of the adjustment component, the slider 6 rotates in the same direction as the drive screw 5. At this time, the connecting plate 10 continues to slide in the limiting groove 45. While the drive screw 5 rotates clockwise, it drives the first rotating shaft 38 to rotate through the set linkage structure. The rotation of the first rotating shaft 38 drives multiple blades 40 to rotate in the discharge channel 31. The sliding asphalt concrete is wrapped by two adjacent blades 40. With the rotation of multiple blades 40, the asphalt concrete is discharged intermittently to avoid excessive discharge at one time, which would cause the asphalt concrete to scatter everywhere and leave the paving range of the screed 24.

[0087] In some embodiments, reference Figure 5 , combined Figure 1 The discharge mechanism also includes an extension plate 37, which is movably connected to the outlet 32 ​​of the discharge channel. The top surface of the extension plate 37 is provided with multiple diversion plates 41 arranged at intervals. A flow channel is formed between two adjacent diversion plates 41, and the extension direction of each flow channel is the same as the axial direction of the outlet 32 ​​of the discharge channel. There is an included angle between the surfaces of two adjacent diversion plates 41.

[0088] In some embodiments, the extension plate 37 can be installed at an angle relative to the outlet 32 ​​of the discharge channel, and multiple diversion plates 41 can be fixedly connected at equal intervals on the top surface of the extension plate 37. There can be an included angle between the surfaces of two adjacent diversion plates 41, and the opening of the included angle can be gradually increased along the flow direction of the asphalt concrete. The asphalt concrete flowing out of the discharge channel 31 slides onto the extension plate 37 and continues to slide down along the inclined surface of the extension plate 37. When the asphalt concrete slides to the multiple diversion plates 41, it is divided into multiple streams and slides down after being diverted by the multiple diversion plates 41, which avoids the asphalt concrete from accumulating in one place after being discharged, causing the paved asphalt concrete panel to be uneven, thereby improving the paving quality of the panel.

[0089] In some embodiments, reference Figure 5The bottom of the outlet 32 ​​of the discharge channel is provided with two fixed plates 33, and a connecting frame 36 and a spring assembly are provided between the two fixed plates 33. One end of the connecting frame 36 is connected to the extension plate 37. The spring assembly includes a first spring 35 and a first sliding shaft 34. The first sliding shaft 34 passes through the connecting frame 36 and is connected to the fixed plate 33. The first spring 35 is provided between the connecting frame 36 and the fixed plate 33. The end of the first rotating shaft 38 away from the bottom of the truck bed 2 has a first cam 39. The first rotating shaft 38 drives the first cam 39 to rotate, so that the first cam 39 intermittently pushes the connecting frame 36 to move. As the first rotating shaft 38 rotates, it drives the first cam 39 to rotate. When the protruding end of the first cam 39 rotates to one side, it pushes the connecting frame 36 to move to one side and presses the first spring 35. As the first cam 39 continues to rotate, after the first cam 39 disengages from the connecting frame 36, the connecting frame 36 gradually returns to its original position under the action of the first spring 35. When the protruding end of the first cam 39 rotates to the other side, it similarly pushes the connecting frame 36 to move to the other side. This process repeats itself. As the first rotating shaft 38 rotates, it drives the connecting frame 36 to swing back and forth, causing the extension plate 37 to swing back and forth. Through the swinging of the extension plate 37, not only is the flow divider plate 41 prevented from being blocked by asphalt concrete, but the flow range of asphalt concrete is also expanded, further preventing the accumulation of asphalt concrete.

[0090] In one exemplary embodiment provided in this disclosure, such as Figure 12 As shown, combined with Figures 1 to 11When using the aforementioned asphalt concrete paver to pave panels on slope 100, the working process is as follows: When paving asphalt concrete on slope 100, control the vehicle body 1 to drive onto slope 100. A traction machine is installed at the top of slope 100 to provide tension to the vehicle body 1, assisting it in driving on slope 100. Asphalt concrete is loaded into the truck bed 2. An electric control valve can be installed at the inlet of the discharge channel 31 to control the material discharge. Start the first motor 4, driving the drive screw 5 to rotate counterclockwise. In conjunction with the adjusting component, the slider 6 moves up and down repeatedly, driving the connecting plate 10 to move up and down repeatedly, causing the fixed seat 11, sleeve 12, box 20, and screed 24 to move accordingly. This controls the position of the screed 24. At the start of the paving operation, control the drive screw 5 to rotate counterclockwise. The clock hand rotates, moving the screed 24 to a suitable height. The height of the screed 24 determines the paving thickness of the asphalt concrete. The discharge channel 31 is opened by the electronic control valve, allowing the asphalt concrete in the truck bed 2 to be discharged. The asphalt concrete flows out along the discharge channel 31 and is spread on the ground. As the truck body 1 moves, it drives the screed 24 to move upward and compact the asphalt concrete on the ground. Since the connecting plate 10 can be moved up and down by the drive screw 5, and the first rotating shaft 38 can be rotated by the drive screw 5, the position of the screed 24, the discharge speed and uniformity can be controlled in a coordinated manner through the linkage between the connecting plate 10 and the first rotating shaft 38. This improves the paving uniformity of the screed 24 and the discharge uniformity of the discharge channel 31, further enhancing the overall paving quality of the device.

[0091] It should be noted that the asphalt concrete paver provided in this disclosure is applicable to paving of panels on various road conditions such as horizontal surfaces and slopes, with a wide range of applications and high paving quality.

[0092] This disclosure provides a method for using an asphalt concrete paver, applying the asphalt concrete paver provided in any of the above embodiments, such as... Figure 13 As shown, combined with Figures 1 to 12 The method of use includes steps S1 to S4.

[0093] S1: Control the vehicle to travel up the slope;

[0094] S2: Start the first motor to rotate clockwise. The first motor drives the drive screw to rotate, the drive screw drives the first rotating shaft to rotate, and the first rotating shaft drives the rotation of multiple blades, so that the asphalt concrete is fed intermittently. Through the cooperation of the first cam and the connecting frame, the extension plate swings back and forth.

[0095] S3: When the screed is pressing the asphalt concrete, start the second motor. The second motor drives the second shaft to rotate. Through the cooperation of the second cam and the slide plate, the screed will swing continuously.

[0096] S4: After the paving operation is completed, start the first motor to control the connecting plate to move upward, and start the second motor. Through the cooperation of the first and second top blocks, the screed plate will continuously vibrate downward and swing, shaking off the asphalt concrete adhering to the screed plate.

[0097] The method of using the asphalt concrete paver disclosed herein is applicable to the paver described above. The specific working processes of the various mechanisms within the paver are as described above and will not be repeated here. This method of using the asphalt concrete paver is simple to operate and easy to control. By coordinating and controlling the interaction between the various mechanisms, the overall paving quality of the paver can be improved.

[0098] It should be noted that the first motor 4 provided in this disclosure drives the drive screw 5 to rotate clockwise or counterclockwise. In pavers with different structures, when the drive screw 5 rotates clockwise, it can achieve the function and effect of the drive screw 5 rotating counterclockwise in the above embodiments, and when the drive screw 5 rotates counterclockwise, it can achieve the function and effect of the drive screw 5 rotating clockwise in the above embodiments. The effect achieved by the specific rotation method of the drive screw 5 can be adaptively replaced and adjusted according to the structural design of different pavers.

[0099] It should be noted that although the steps of the method of using the asphalt concrete paver in this disclosure are described in a specific order in the accompanying drawings, this does not require or imply that these steps must be performed in that specific order, or that all the steps shown must be performed to achieve the desired result. Additional or alternative steps may be omitted, multiple steps may be combined into one step, and / or one step may be broken down into multiple steps.

[0100] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

Claims

1. An asphalt concrete paver characterized by, The utility model relates to a paving machine, including: A vehicle body has a vehicle hopper that carries asphalt concrete; A first drive mechanism includes a support frame and a drive screw inside the support frame, the support frame is connected to the first side of the vehicle hopper, the drive screw is parallel to the first side, the drive screw is driven to rotate by a first motor; A paving mechanism includes a screed, the screed is located on the same side of the vehicle hopper as the first drive mechanism, the screed is connected to the drive screw; A first connecting mechanism includes a connecting plate, one end of the connecting plate is connected to the rod body of the drive screw, the other end of the connecting plate is connected to the screed; A discharge mechanism is arranged at the bottom of the vehicle hopper and close to the first side, the discharge mechanism includes a discharge channel, the asphalt concrete inside the vehicle hopper flows to the direction close to the screed through the discharge channel; The discharge mechanism further includes a first rotating shaft and a plurality of blades around the first rotating shaft and located in the discharge channel, the first rotating shaft is arranged in the discharge channel along the direction perpendicular to the bottom of the vehicle hopper, one end of the first rotating shaft is connected to the drive screw through a linkage structure; the drive screw is used to drive the screed to move along the direction parallel to the first side and drive the first rotating shaft to rotate by rotating itself.

2. The asphalt concrete paver of claim 1, wherein, The discharge mechanism further includes an extension plate, the extension plate is movably connected to the outlet of the discharge channel; the top surface of the extension plate is provided with a plurality of shunt plates arranged at intervals, a flow-through channel is formed between adjacent two shunt plates, the extension direction of each flow-through channel is the same as the outlet axis direction of the discharge channel; the surfaces of adjacent two shunt plates have an included angle.

3. The asphalt concrete paver of claim 2, wherein, The bottom of the outlet of the discharge channel is provided with two fixed plates, a connecting frame and a spring assembly are arranged between the two fixed plates, one end of the connecting frame is connected to the extension plate; the spring assembly includes a first spring and a first sliding shaft, the first sliding shaft is arranged in the connecting frame and connected to the fixed plate, the first spring is arranged between the connecting frame and the fixed plate; The end of the first rotating shaft away from the bottom of the vehicle hopper has a first cam, the first rotating shaft drives the first cam to rotate, so that the first cam intermittently pushes the connecting frame to move.

4. The asphalt concrete paver of claim 1, wherein, The linkage structure includes a first pulley and a second pulley, the first pulley is connected to the bottom end of the drive screw, the second pulley is connected to the top end of the first rotating shaft, the first pulley and the second pulley are connected by a transmission belt.

5. The asphalt concrete paver of claim 1, wherein, The first connecting mechanism further includes a sliding block, the sliding block is arranged in the support frame and is arranged in close contact with the inner wall of the support frame, the drive screw is arranged in the sliding block; a limiting groove is formed in the outer side wall of the sliding block, one end of the connecting plate is assembled in the limiting groove.

6. The asphalt concrete paver of claim 5, wherein, The first recess is arranged on one side of the sliding block away from the limiting groove, and an adjusting assembly is arranged in the first recess.

7. The asphalt concrete paver of claim 1, wherein, The paving mechanism further comprises a second connecting mechanism, the second connecting mechanism comprises a fixing seat connected to the bottom surface of the connecting plate, and a sleeve is sleeved on the fixing seat and in sliding connection with the fixing seat. The inner wall side of the top end of the sleeve is provided with a limiting block, the outer wall of the fixing seat is provided with a limiting ring, the limiting block and the limiting ring are in matched connection, and a gap is formed between the limiting block and the limiting ring in the direction parallel to the axis of the sleeve. The bottom of the sleeve is fixedly connected with a box body, the box body comprises a partition plate, the bottom surface of the partition plate is provided with two symmetrical second sliding shafts, each second sliding shaft is sleeved with a third spring, one end of the third spring is fixed to the inner wall of the box body, the two second sliding shafts are respectively arranged in two parallel sliding plates, the other end of the third spring is fixedly connected with the sliding plate, and the bottom of the two sliding plates is fixedly connected with the screed. The second connecting mechanism comprises a second rotating shaft arranged in the sleeve and penetrating through the box body, one end of the second rotating shaft is connected to the fixing seat through a second motor, and the other end of the second rotating shaft is connected with a second cam located between the two sliding plates.

8. The asphalt concrete paver of claim 7, wherein, The second connecting mechanism further comprises a top plate located on the top surface of the partition plate, the top plate is sleeved on the second rotating shaft, the top of the top plate is fixedly connected with two first top blocks in symmetry, the top of the inner wall of the box body is fixedly connected with two second top blocks in symmetry, the top of the first top block is a first inclined surface, and the bottom of the second top block is provided with a second inclined surface matched with the first inclined surface.

9. The asphalt concrete paver of any of claims 1-8, wherein, In the length direction, the two ends of the screed are provided with arc surfaces, recesses are arranged on the two sides of the screed, a plurality of equidistantly arranged teeth are arranged in each recess, and the top of each tooth is provided with an inclined surface. In the width direction, the two sides of the screed are respectively provided with side plates, and the outer walls of the two side plates are arc surfaces.

10. The asphalt concrete paver of claim 9, wherein, In the length direction, the top surface of the screed is further provided with two arc-shaped guide plates, the two arc-shaped guide plates are respectively arranged on the two ends of the screed, and a plurality of partition plates are arranged on the side of the arc-shaped guide plate away from the axis of the screed. In the length direction, the top surface of the screed is further provided with two arc-shaped guide plates, the two arc-shaped guide plates are respectively arranged on the two ends of the screed, and a plurality of partition plates are arranged on the side of the arc-shaped guide plate away from the axis of the screed.

Images