Asphalt paver for road engineering paving

Abstract

The present invention relates to the field of road engineering technology, and specifically to an asphalt paver for paving road engineering, comprising a paver main body and an output trough, the bottom surfaces of the outer shells on both sides are provided with a turning mechanism for dragging and steering, the inner surface of the turning mechanism is provided with an opening mechanism for controlling the output amount at different positions, the inner surface of the output trough is provided with a spreading mechanism for scraping and spreading asphalt evenly, and the outer surface of the spreading mechanism is provided with a deflection mechanism for adjusting the scraping frequency according to the steering. The output trough for outputting asphalt can follow the paver turning and adjust the rotation direction of the opening mechanism according to the direction of the turning, so that the gap between the open side plates will form a trapezoid, which can ensure that the area swept at different positions matches the output amount of asphalt, thereby achieving uniform distribution of asphalt during turning paving, effectively avoiding the problem of excessive or insufficient local asphalt, and ensuring the quality and aesthetics of road paving.

Description

Technical Field

[0001] The present invention relates to the technical field of road engineering, in particular to an asphalt paver for paving road engineering. Background Art

[0002] An asphalt paver is a key piece of equipment used in road construction, primarily for laying asphalt concrete pavements. During operation, the asphalt mixture enters the paver from the hopper, is evenly distributed through a spiral distributor, and is then spread and formed through a screed. This equipment ensures the smoothness and uniform thickness of the asphalt pavement, improving construction efficiency and quality. It is widely used in the construction of highways, municipal roads, and other pavement projects. With technological advancements, modern asphalt pavers are also equipped with intelligent control systems, further enhancing the accuracy and convenience of construction.

[0003] When existing asphalt pavers are laying asphalt, since the output ports are mostly rectangular, they can lay asphalt very evenly when paving on straight roads. However, when passing through right-angle bends or U-shaped bends, the paver needs to turn and rotate around a center of a circle when turning. Since the output port is long and narrow, when rotating around a point, the point must be outside the paver. In this way, the distance between each output port and the rotation center is different. Although the angular velocity is the same during rotation, the linear velocity at different positions is different, and the area swept by different regions is also different.

[0004] Existing pavers lack the function of adjusting the asphalt distribution according to the position when turning, making it difficult to ensure that the asphalt is evenly distributed when paving turns, affecting the quality of road paving.

[0005] In view of this, we propose an asphalt paver for road engineering paving. Summary of the Invention

[0006] The purpose of the present invention is to provide an asphalt paver for road engineering paving, so as to solve the problem of the existing asphalt paver mentioned in the above background technology, which is that it cannot adapt to the linear speed difference at different positions when turning, which affects the uniform distribution of asphalt during turning paving and affects the quality of road paving. To achieve the above purpose, the present invention provides the following technical solution: an asphalt paver for road engineering paving, comprising a paver body and an output trough, the inner surface of the output trough being rotatably connected to a threaded transport rod, two side shells being fixedly connected to the two sides of the output trough, the bottom surfaces of the two side shells being provided with a turning mechanism, the inner surface of the turning mechanism being provided with an opening mechanism, the inner surface of the output trough being provided with a uniform paving mechanism, and the outer surface of the uniform paving mechanism being provided with a deflection mechanism.

[0007] Preferably, the turning mechanism includes a bottom shell, the bottom shell is fixedly connected to the bottom surface of the output trough, symmetrically distributed wheel mounting frames are fixedly connected to both sides of the bottom shell, the inner surface of the wheel mounting frame is rotatably connected to an L-shaped plate, one side surface of the L-shaped plate is rotatably connected to a driving wheel, the other side surface of the L-shaped plate is hingedly connected to a driven push-pull rod, the other end of the driven push-pull rod is hingedly connected to an active T-block, the outer surface of the bottom shell is fixedly connected to the bottom mounting frame, and the top surface of the bottom mounting frame is fixedly connected to a rotatable mounting column;

[0008] The driven push-pull rods are symmetrically distributed on both sides of the active T-block, the active T-block is rotatably connected to the rotating mounting column, and the L-shaped plate and the driven push-pull rods are both slidably connected to the inner surfaces of the bottom shell and the upper grooves of the two side shells.

[0009] Preferably, the opening mechanism includes an opening support frame, the top surface of the opening support frame is rotatably connected to an opening side panel, the top surface of the opening side panel is fixedly connected to a top baffle, both ends of the opening side panel are hingedly connected to an opening control arm, the other end of the opening control arm is hingedly connected to a push control block, the outer surface of the push control block is fixedly connected to an L-connecting plate, and the top surface of the L-connecting plate is rotatably connected to a frame connecting plate;

[0010] Both sides of the top baffle are arc-shaped, and the radius of the arc is the distance from the rotation center of the opening side plate to the rotation center of the opening control arm. The top baffle is slidably connected to the inner surface of the bottom shell. The number of the opening control arms is four, and the number on each side of the opening side plate is two. The number of the push control blocks is two, and the push control blocks are slidably connected to the inner surface of the bottom shell.

[0011] Preferably, the frame connecting plate is fixedly connected to the bottom surface of the L-shaped plate.

[0012] Preferably, the evenly paving mechanism includes an upper platform, an input groove is provided on the top surface of the upper platform, a connecting hole is provided on the outer surface of the upper platform, a contact protrusion is fixedly connected to the inner surface of the connecting hole, a bottom limiting groove is provided on the bottom surface of the upper platform, the bottom surface of the upper platform is slidably connected to the lower platform, the top surface of the lower platform is fixedly connected to the connecting limiting column, a pushing groove is provided on the outer surface of the lower platform, an open connecting block is fixedly connected to the outer surface of the lower platform, and an open connecting groove is provided on the outer surface of the open side plate;

[0013] The upper platform is slidably connected to the inner surface of the output slot, there are two lower platforms, the bottom limit slot is slidably connected to the connecting limit column, the open connecting block is slidably connected to the inner surface of the open connecting slot, and the lower platform is slidably connected to the outer surfaces of the opening side panel and the top baffle.

[0014] Preferably, the deflection mechanism includes a driving motor, the output end of the driving motor is fixedly connected to a cylindrical cam, the outer surface of the cylindrical cam is slidably connected to a fixed shell, both sides of the fixed shell are fixedly connected to connecting pull columns, the inner surface of the fixed shell is slidably connected to a movable shell, the outer surface of the movable shell is sleeved with a trigger spring, the outer surface of the connecting pull column is slidably connected to a trigger arm, the outer surface of the trigger arm is provided with a pulling groove, the top surface of the driven push-pull rod is fixedly connected to a short connecting column, and the top surface of the driven push-pull rod on the other side is fixedly connected to a long connecting column;

[0015] The cylindrical cam is rotatably connected to the outer surface of the output slot, there are two fixed shells, the movable shell passes through the fixed shell, the two ends of the trigger spring are fixedly connected to the movable shell and the fixed shell respectively, the connecting pulling column is slidably connected to the inner surface of the pulling slot, and the cylindrical cam passes through the connecting hole and is slidably connected to the contact protrusion.

[0016] Preferably, the end connecting column and the long connecting column are fixedly connected to the driven push-pull rods on both sides respectively.

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

[0018] In this invention, the turning mechanism and the opening mechanism work together to enable the drive wheels closer to the center of rotation to rotate at a greater angle than the outer drive wheels, allowing the asphalt delivery trough to follow the paver's turns. The opening mechanism's rotational direction is adjusted based on the direction of the turn, creating a trapezoidal gap between the side panels. The gap decreases closer to the center of rotation, resulting in less asphalt delivery; the gap increases toward the outer edges, resulting in more asphalt delivery. This dynamic adjustment of the opening size based on the turning situation ensures that the area swept across at different locations matches the asphalt delivery volume, achieving uniform asphalt distribution during turns, effectively avoiding the problem of excessive or insufficient asphalt in certain areas, and ensuring the quality and aesthetics of the road paving.

[0019] In the present invention, the paving mechanism and the deflection mechanism work together, and the upper platform and the lower platform in the paving mechanism are driven by the cylindrical cam to move back and forth. During the movement, the asphalt on the inner side of the output trough and the outer surface of the opening side plate and the top baffle is scraped off to prevent the asphalt from adhering for a long time and causing blockage. At the same time, it also helps to make the asphalt more evenly distributed in the paving area.

[0020] In the present invention, the turning mechanism and the deflection mechanism work together. While turning, the deflection mechanism adjusts the moving path of the paving mechanism. On the side where the asphalt throughput is less, the scraping frequency is reduced; on the side where the asphalt throughput is more, the scraping frequency is increased, further ensuring the uniform output of asphalt at different positions and improving the overall quality and effect of road paving. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic side view of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the output trough, the threaded transport rod, and the turning mechanism cooperating with each other in the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the output trough, two side shells, and bottom shell cooperating with each other in the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the various components of the turning mechanism of the present invention cooperating with each other;

[0025] Figure 5 This is a schematic diagram of the structure of the L-shaped plate, driving wheel, and frame connecting plate cooperating with each other in the present invention;

[0026] Figure 6 This is a schematic diagram of the structure in which the active T-block, the bottom mounting frame, the short connecting column and the long connecting column cooperate with each other in the present invention;

[0027] Figure 7 Schematic diagram A of the bottom structure of the turning mechanism and opening mechanism of the present invention;

[0028] Figure 8 It is a schematic diagram of the top structure of the turning mechanism and the opening mechanism of the present invention;

[0029] Figure 9 This is a schematic diagram of the structure of the opening side panel and the bottom shell cooperating with each other in the present invention;

[0030] Figure 10 This is a schematic diagram of the structure of the opening side panels, top baffles, and opening connection grooves that cooperate with each other in the present invention;

[0031] Figure 11 This is a schematic diagram of the structure of the L-shaped plate, L-connecting plate, and push control block cooperating with each other in the present invention;

[0032] Figure 12 Schematic diagram B of the bottom structure of the turning mechanism and opening mechanism of the present invention;

[0033] Figure 13 This is a schematic diagram of the structure of the evenly paving mechanism and the top baffle cooperating with each other in the present invention;

[0034] Figure 14 This is a schematic diagram of the structure of the various components of the evenly paving mechanism of the present invention cooperating with each other;

[0035] Figure 15 This is a schematic diagram of the structure of the coordination between the evenly spreading mechanism and the deflecting mechanism of the present invention;

[0036] Figure 16 It is a schematic diagram of the structure of the mutual cooperation of the various components of the deflection mechanism of the present invention.

[0037] Figure: 1. Paver body; 2. Output chute; 21. Threaded transport rod; 22. Side housings; 3. Turning mechanism; 31. Bottom housing; 311. Wheel mounting bracket; 32. L-shaped plate; 321. Drive wheel; 33. Driven push-pull rod; 34. Active T-shaped block; 341. Bottom mounting bracket; 342. Rotating mounting column; 4. Opening mechanism; 41. Opening support bracket; 42. Opening side plate; 421. Top baffle; 43. Opening control arm; 431. Push control block; 44. L-shaped connecting plate; 441. Frame connecting plate; 5 , evenly spreading mechanism; 51, upper platform; 511, input slot; 512, connecting hole; 5121, contact protrusion; 513, bottom limit slot; 52, lower platform; 521, connecting limit column; 522, pushing slot; 523, opening connecting block; 524, opening connecting slot; 6, deflection mechanism; 61, driving motor; 62, cylindrical cam; 63, fixed shell; 631, connecting pulling column; 64, movable shell; 641, trigger spring; 65, trigger arm; 651, pulling slot; 66, short connecting column; 661, long connecting column. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0039] See also Figures 1 to 16 The present invention provides a technical solution: an asphalt paver for road engineering paving, comprising a paver body 1 and an output trough 2, wherein a threaded transport rod 21 is rotatably connected to the inner surface of the output trough 2, and two side shells 22 are fixedly connected to the two sides of the output trough 2. A turning mechanism 3 is provided on the bottom surface of the two side shells 22, and an opening mechanism 4 is provided on the inner surface of the turning mechanism 3. A uniform paving mechanism 5 is provided on the inner surface of the output trough 2, and a deflection mechanism 6 is provided on the outer surface of the uniform paving mechanism 5;

[0040] The paver body 1 outputs the asphalt to be paved to the center of the output trough 2, and the internal threaded transport rod 21 continuously rotates to disperse the asphalt to both sides.

[0041] The turning mechanism 3 includes a bottom shell 31, which is fixedly connected to the bottom surface of the output trough 2. Both sides of the bottom shell 31 are fixedly connected to symmetrically distributed wheel mounting frames 311. The inner surface of the wheel mounting frame 311 is rotatably connected to an L-shaped plate 32. One side surface of the L-shaped plate 32 is rotatably connected to a driving wheel 321. The other side surface of the L-shaped plate 32 is hingedly connected to a driven push-pull rod 33. The other end of the driven push-pull rod 33 is hingedly connected to an active T-block 34. The outer surface of the bottom shell 31 is fixedly connected to a bottom mounting frame 341. The top surface of the bottom mounting frame 341 is fixedly connected to a rotatable mounting column 342.

[0042] The driven push-pull rods 33 are symmetrically distributed on both sides of the active T-block 34. The active T-block 34 is rotatably connected to the rotating mounting column 342. The L-shaped plate 32 and the driven push-pull rods 33 are slidably connected to the inner surface of the grooves on the bottom shell 31 and the two side shells 22.

[0043] Through the setting of the turning mechanism 3, during use, after the asphalt enters the output trough 2, it is output from the bottom shell 31 at the bottom and paved on the ground. The output trough 2 and the bottom shell 31 are equipped with most components, and are dragged and turned by the paver body 1 through the driving wheels 321 on both sides. In the initial state of straight-line driving, the driving wheels 321 are parallel. When the paver body 1 turns, the driving wheels 321 on both sides will also rotate, and the L-shaped plate 32 on the driving wheel 321 on one side will rotate, and the driven push-pull rod 33 will push or pull the active T-shaped block 34 to rotate on the rotating mounting column 342, and pull or push the driven push-pull rod 33 on the other side, so that the L-shaped plate 32 on the other side also drives the driving wheel 321 to rotate. After the active T-shaped block 34 rotates, since it rotates around the rotating mounting column 342, it will push the driven push-pull rod 33 on one side and pull the driven push-pull rod 33 on the other side, so that the rotation angle of the driving wheel 321 close to the inner side of the rotating circle is greater than that of the outer driving wheel 321.

[0044] The opening mechanism 4 includes an opening support frame 41, the top surface of the opening support frame 41 is rotatably connected to an opening side panel 42, the top surface of the opening side panel 42 is fixedly connected to a top baffle 421, both ends of the opening side panel 42 are hingedly connected to an opening control arm 43, the other end of the opening control arm 43 is hingedly connected to a push control block 431, the outer surface of the push control block 431 is fixedly connected to an L-shaped connecting plate 44, and the top surface of the L-shaped connecting plate 44 is rotatably connected to a frame connecting plate 441;

[0045] Both sides of the top baffle 421 are arc-shaped, and the radius of the arc is the distance between the rotation center of the opening side plate 42 and the rotation center of the opening control arm 43. The top baffle 421 is slidably connected to the inner surface of the bottom shell 31. There are four opening control arms 43, one on each side of the two opening side plates 42. There are two push control blocks 431, and the push control blocks 431 are slidably connected to the inner surface of the bottom shell 31.

[0046] Through the setting of the opening mechanism 4, during use, the opening side panels 42 rotate on the opening support frame 41, and the rotation center is the center position of the opening side panels 42, so that the opening side panels 42 cannot move and can only rotate. In the initial state, the paver body 1 moves straight, and the opening side panels 42 are in a parallel state. The gap in each interval is equal. When the output trough 2 outputs the asphalt through the opening mechanism 4, the output amount of asphalt in each part is the same. When the paver body 1 turns, the L-shaped plates 32 on both sides will rotate on the wheel mounting frame 311, and drive the bottom frame connecting plate 441 to rotate. Since the rotation direction is the same, the two L connecting plates 44 will be pushed to the same side, and the outer side will push the control block during rotation. When the opening side panels 42 are moved, the opening control arms 43 on the push control block 431 are pushed to both sides, and the opening side panels 42 are pushed to both sides, thereby increasing the gap. When the push control block 431 on the other side moves outward, the opening control arm 43 is pulled inward, thereby reducing the gap. This causes both opening side panels 42 to rotate, and the distance between them becomes smaller the closer they are to the rotating position. The push control block 431 can move inside the bottom housing 31 to adapt to the displacement of the L-connecting plates 44 on both sides in opposite directions and with different moving distances.

[0047] A top baffle 421 is provided on the top of the open side plate 42, which still blocks the top after rotation, so that the asphalt can only pass through the gap of the open side plate 42. The smaller the gap, the less asphalt is output. In this way, when the paver body 1 lays asphalt through the output trough 2 when turning, the angular velocity is the same during rotation, but the linear velocity at each point on the output trough 2 is different. The farther away from the rotation center, the larger the swept area is, and more asphalt needs to be laid. The smaller the swept area is near the rotation center, so when laying, the closer to the rotation center, the less asphalt is output, and the farther out, the more asphalt is, making the asphalt more uniform.

[0048] The frame connecting plate 441 is fixedly connected to the bottom surface of the L-shaped plate 32 .

[0049] The evenly spreading mechanism 5 includes an upper platform 51, an input slot 511 is formed on the top surface of the upper platform 51, a connecting hole 512 is formed on the outer surface of the upper platform 51, a contact protrusion 5121 is fixedly connected to the inner surface of the connecting hole 512, a bottom limiting slot 513 is formed on the bottom surface of the upper platform 51, a lower platform 52 is slidably connected to the bottom surface of the upper platform 51, a connecting limiting column 521 is fixedly connected to the top surface of the lower platform 52, a pushing slot 522 is formed on the outer surface of the lower platform 52, an open connecting block 523 is fixedly connected to the outer surface of the lower platform 52, and an open connecting slot 524 is formed on the outer surface of the open side plate 42;

[0050] The upper platform 51 is slidably connected to the inner surface of the output trough 2. There are two lower platforms 52. The bottom limiting groove 513 is slidably connected to the connecting limiting column 521. The opening connecting block 523 is slidably connected to the inner surface of the opening connecting groove 524. The lower platform 52 is slidably connected to the outer surfaces of the opening side plate 42 and the top baffle 421.

[0051] The upper platform 51 is connected to the lower platform 52 for contacting the outer surface of the opening side plate 42 and the top baffle 421, and moves synchronously with the upper platform 51 to also achieve the scraping effect. The lower platform 52 is installed in the bottom limit groove 513 of the upper platform 51 through the connection limit column 521. The connection limit column 521 can move and rotate in the bottom limit groove 513, so that the lower platform 52 has a certain degree of movement and rotation freedom while maintaining connection with the upper platform 51, and is always in contact with the surface of the opening side plate 42 through the opening connection block 523 and the opening connection groove 524. In this way, when the opening side plate 42 rotates, the lower platform 52 can follow the rotation to move back and forth to scrape the surface.

[0052] When the lower platform 52 moves back and forth, if the paver body 1 turns and the open side plate 42 rotates, the opening gaps in different areas will be different. When the lower platform 52 moves back and forth, in the process of returning from a smaller gap to a larger gap, both sides of the pushing groove 522 are inclined. The asphalt gap is small and passes slowly, so the asphalt will accumulate on the top. The inclined pushing groove 522 will pass from the bottom of the accumulated asphalt, thereby reducing the amount of asphalt pushed and scraping the upper surface of the top baffle 421.

[0053] The deflection mechanism 6 includes a drive motor 61, the output end of which is fixedly connected to a cylindrical cam 62, the outer surface of which is slidably connected to a fixed housing 63, both sides of which are fixedly connected to connecting pull posts 631, the inner surface of which is slidably connected to a movable housing 64, the outer surface of which is sleeved with a trigger spring 641, the outer surface of which is slidably connected to the outer surface of the connecting pull post 631, the outer surface of which is provided with a pulling groove 651, the top surface of which is fixedly connected to a short connecting post 66, and the top surface of which is fixedly connected to a long connecting post 661.

[0054] The cylindrical cam 62 is rotatably connected to the outer surface of the output slot 2. There are two fixed housings 63. The movable housing 64 passes through the fixed housing 63. The two ends of the trigger spring 641 are fixedly connected to the movable housing 64 and the fixed housing 63 respectively. The connecting pull column 631 is slidably connected to the inner surface of the pull slot 651.

[0055] By setting the deflection mechanism 6, during use, the driving motor 61 drives the cylindrical cam 62 to rotate. The cam groove on the surface of the cylindrical cam 62 is a double spiral, which cooperates with the contact protrusion 5121 of the upper platform 51 to realize the reciprocating movement of the upper platform 51. When the paver body 1 turns, the active T-block 34 will rotate, causing the driven push-pull rods 33 on both sides to move away from the rotation center. The short connecting column 66 and the long connecting column 661 also move, so that the trigger arm 65 pulls the connecting pull column 631 on the side close to the rotation center through the inner wall of the pulling groove 651 when moving, and the inner wall of the pulling groove 651 on the other side does not contact the connecting pull column 631 when moving, and does not work. In this way, the fixed housing 63 on the side close to the rotation center will move inward, so that when the upper platform 51 reciprocates, the moving distance on the side close to the rotation center is reduced. The reduced path reduces the time of each reciprocating movement, and the frequency of scraping is faster on the side with a larger gap and more asphalt output.

[0056] When the upper platform 51 encounters the intersection of the double helix, if it cannot continue to move forward, it will enter the helix on the other side and return. Since the moving position of the fixed shell 63 is not fixed, the upper platform 51 cannot enter the intersection every time, so the movable shell 64 and the trigger spring 641 are used as a buffer. The movable distance of the movable shell 64 is greater than the spacing between the intersections of the two double helices. In this way, when it contacts the movable shell 64, if it cannot enter the intersection of the double helix at the first time, it will continue to move to push the movable shell 64 and compress the trigger spring 641 until it enters the intersection of the double helix. Since the deformation of the trigger spring 641 is proportional to the force it receives, the reset of the trigger spring 641 will push the movable shell 64 to enter the helix on the other side and return, thereby reducing the moving range on the side with less asphalt throughput and allowing the side with more throughput to have a higher frequency of scraping.

[0057] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 As shown, the output chute 2 is installed on the outside of the paver body 1, and the other mechanisms are installed around the output chute 2;

[0058] In this embodiment, Figure 4 As shown, the installation positions of various components after removing the output slot 2, as well as the overall structure of the turning mechanism 3;

[0059] In this embodiment, Figure 5 、 Figure 6 As shown, the connection relationship between the components of the turning mechanism 3;

[0060] In this embodiment, Figure 7 、 Figure 8 、 Figure 12 As shown, the turning mechanism 3 drives the opening mechanism 4 to deform before and after turning, and the rotation angles on both sides are different when turning;

[0061] In this embodiment, Figure 9 As shown, both sides of the top baffle 421 are arc-shaped, and the radius of the arc is the distance from the rotation center of the opening side plate 42 to the rotation center of the opening control arm 43, so that no gap will be generated when the top baffle 421 rotates and passes through the bottom shell 31;

[0062] In this embodiment, Figure 10 、 Figure 11 、 Figure 13 As shown, the turning mechanism 3, the opening mechanism 4, and the evenly spreading mechanism 5 are interconnected and deform simultaneously when turning and going straight;

[0063] In this embodiment, Figure 13 、 Figure 14As shown, the connection limit column 521 can move and rotate in the bottom limit groove 513, so that the lower platform 52 has a certain degree of freedom of movement and rotation while maintaining connection with the upper platform 51;

[0064] In this embodiment, Figure 15 、 Figure 16 As shown, when the turning mechanism 3 rotates, the deflection mechanism 6 is deformed to control the movement range of the evenly spreading mechanism 5 .

[0065] The use method and advantages of the present invention: The asphalt paver used for road engineering paving has the following working process:

[0066] like Figures 1 to 16 As shown, when in use, the paver body 1 outputs the asphalt to be paved to the center of the output trough 2, and the internal threaded transport rod 21 continuously rotates to spread the asphalt to both sides;

[0067] The upper platform 51 is moved back and forth by the cylindrical cam 62. The upper platform 51 is attached to the inner surface of the output trough 2 and scrapes off the asphalt covering the inner surface of the output trough 2 when moving. The lower platform 52 is connected to fit the outer surface of the opening side plate 42 and the top baffle 421, and also has a scraping effect.

[0068] In the initial state, the paver body 1 moves straight, the opening side plates 42 are parallel, the gaps in each section are equal, and when the output chute 2 outputs asphalt through the opening mechanism 4, the output amount of asphalt in each section is the same;

[0069] When the paver body 1 turns, the driving wheels 321 on both sides rotate, and the driving wheels 321 closer to the inner side of the rotation center rotate at a greater angle than the driving wheels 321 on the outer side, pushing and pulling the push control blocks 431 on both sides to move, so that the open side plates 42 rotate, and the gap becomes trapezoidal. When paving, the closer to the rotation center, the smaller the gap, the less asphalt is output, and the more asphalt is output toward the outer side, making the asphalt more uniform.

[0070] At the same time, when turning, the driven push-pull rods 33 on both sides move away from the rotation center, so that the trigger arm 65 pulls the connecting pulling column 631 close to the rotation center through the inner wall of the pulling groove 651 when moving, and the fixed shell 63 close to the rotation center will move inward, so that the upper platform 51 reduces the moving distance close to the rotation center when moving back and forth.

[0071] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An asphalt paver for road engineering paving, comprising a paver body (1) and an output trough (2), wherein the inner surface of the output trough (2) is rotatably connected to a threaded transport rod (21), and two sides of the output trough (2) are fixedly connected to two side shells (22); Its characteristics are: The bottom surfaces of the two side shells (22) are provided with a turning mechanism (3) for dragging and steering, the inner surface of the turning mechanism (3) is provided with an opening mechanism (4) for controlling the output amount at different positions, the inner surface of the output trough (2) is provided with a paving mechanism (5) for scraping and evenly spreading asphalt, and the outer surface of the paving mechanism (5) is provided with a deflection mechanism (6) for adjusting the scraping frequency according to the steering direction; The turning mechanism (3) includes a bottom shell (31), the bottom shell (31) is fixedly connected to the bottom surface of the output trough (2), and symmetrically distributed wheel mounting frames (311) are fixedly connected to both sides of the bottom shell (31), the inner surface of the wheel mounting frame (311) is rotatably connected to an L-shaped plate (32), one side surface of the L-shaped plate (32) is rotatably connected to a driving wheel (321), the other side surface of the L-shaped plate (32) is hingedly connected to a driven push-pull rod (33), the other end of the driven push-pull rod (33) is hingedly connected to an active T-shaped block (34), the outer surface of the bottom shell (31) is fixedly connected to a bottom mounting frame (341), and the top surface of the bottom mounting frame (341) is fixedly connected to a rotating mounting column (342); The driven push-pull rods (33) are symmetrically distributed on both sides of the active T-block (34), the active T-block (34) is rotatably connected to the rotating mounting column (342), and the L-shaped plate (32) and the driven push-pull rods (33) are both slidably connected to the inner surface of the upper grooves of the bottom shell (31) and the two side shells (22); The opening mechanism (4) comprises an opening support frame (41), the top surface of the opening support frame (41) is rotatably connected to an opening side plate (42), both ends of the opening side plate (42) are hingedly connected to an opening control arm (43), the other end of the opening control arm (43) is hingedly connected to a push control block (431), the outer surface of the push control block (431) is fixedly connected to an L-shaped connecting plate (44), and the top surface of the L-shaped connecting plate (44) is rotatably connected to a vehicle frame connecting plate (441); The frame connecting plate (441) is fixedly connected to the bottom surface of the L-shaped plate (32).

2. The asphalt paver for road engineering paving according to claim 1, characterized in that: The evenly spreading mechanism (5) comprises an upper platform (51), a connection hole (512) is provided on the outer surface of the upper platform (51), a contact protrusion (5121) is fixedly connected to the inner surface of the connection hole (512), a bottom limiting groove (513) is provided on the bottom surface of the upper platform (51), a lower platform (52) is slidably connected to the bottom surface of the upper platform (51), a connection limiting column (521) is fixedly connected to the top surface of the lower platform (52), and a push groove (522) is provided on the outer surface of the lower platform (52).

3. The asphalt paver for road engineering paving according to claim 2, characterized in that: The deflection mechanism (6) includes a driving motor (61), an output end of the driving motor (61) is fixedly connected to a cylindrical cam (62), an outer surface of the cylindrical cam (62) is slidably connected to a fixed housing (63), two sides of the fixed housing (63) are fixedly connected to connecting pull columns (631), an inner surface of the fixed housing (63) is slidably connected to a movable housing (64), an outer surface of the movable housing (64) is sleeved with a trigger spring (641), an outer surface of the connecting pull column (631) is slidably connected to a trigger arm (65), and an outer surface of the trigger arm (65) is provided with a pulling groove (651).

4. The asphalt paver for road engineering paving according to claim 3, characterized in that: The upper platform (51) is slidably connected to the inner surface of the output slot (2), the lower platform (52) is slidably connected to the outer surfaces of the opening side plate (42) and the top baffle (421), and the cylindrical cam (62) passes through the connection hole (512) and is slidably connected to the contact protrusion (5121).

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