Screening device for road asphalt recycling

Abstract

The application relates to the technical field of asphalt recycling, in particular to a screening device for road asphalt recycling, which comprises a mounting frame, a screening frame is arranged on the mounting frame in a sliding mode, a vibration assembly is arranged on the mounting frame, the vibration assembly is connected with the screening frame and used for driving the screening frame to vibrate, the screening net comprises two groups of screen rods, the two groups of screen rods are perpendicular to each other, a plurality of screen holes are formed between the two groups of screen rods, an installation groove is arranged in the screening frame, a sliding groove which is in communication with the installation groove is arranged on one side of the screening frame close to the screen rods, the end portions of the screen rods extend into the installation groove through the sliding grooves, the screen rods slide in the sliding grooves in a direction towards adjacent screen rods, and an adjusting assembly is arranged in the installation groove and connected with the screen rods and used for adjusting the positions of the screen rods. The application has the effect of improving the recycling efficiency.

Description

Technical Field

[0001] This application relates to the technical field of asphalt recycling, and in particular to a screening device for road asphalt recycling. Background Technology

[0002] When using asphalt to pave the ground, a large amount of residue is generated during the construction process. In addition, the production of modified asphalt requires the asphalt, fillers, and admixtures to achieve compatibility at high temperatures. However, after the temperature cools down, the asphalt solidifies, producing a lot of waste. When recycling asphalt waste, it is necessary to screen the asphalt waste for subsequent recycling processing.

[0003] Related technologies describe screening devices for road asphalt recycling, including a box-shaped structure. The upper surface of the box is open, and a top cover is provided at the opening. Asphalt collection boxes and waste collection boxes are installed through the bottom of both sides of the box. Through slots are formed on the front and rear end faces of the box near the waste collection boxes, and vibrating structures are installed within these slots. A screening structure is located inside the box. During screening, the vibrating structures drive the screening structure to vibrate, thus screening the asphalt.

[0004] The aforementioned technologies are prone to clogging during screening, making cleaning difficult and affecting the efficiency of asphalt recovery. Summary of the Invention

[0005] To improve recycling efficiency, this application provides a screening device for road asphalt recycling.

[0006] The screening device for road asphalt recycling provided in this application adopts the following technical solution:

[0007] A screening device for road asphalt recycling includes a mounting frame, on which a screening frame is slidably mounted. A vibration component is mounted on the mounting frame and connected to the screening frame to drive the screening frame to vibrate. The screen includes two sets of screen rods, which are perpendicular to each other and form multiple screen holes between them. An installation groove is provided inside the screening frame. A sliding groove communicating with the installation groove is provided on the side of the screening frame near the screen rods. The ends of the screen rods extend into the installation groove through the sliding grooves and slide in the sliding grooves toward adjacent screen rods. An adjustment component is provided in the installation groove and connected to the screen rods to adjust the position of the screen rods.

[0008] By adopting the above technical solution, the vibration component drives the screening frame to vibrate and screen the asphalt. When blockage occurs, the position of the screen rod is adjusted by the adjustment component, so that the screen rod slides in the chute. The spacing between the screen rods is adjusted, and the size of the screen holes is adjusted in turn. The size of the screen holes can be increased so that the asphalt can be separated from the screen holes, the blocked asphalt can be cleaned, and the asphalt recycling efficiency can be improved.

[0009] Optionally, the screening frame is provided with a guide frame, and a feed inlet is opened on the guide frame at a position corresponding to the middle of the screen. The edge of the feed inlet and the edge of the screen are spaced apart. The adjustment component includes an adjustment plate, an adjustment rod, and an adjustment seat. Two adjustment plates are spaced apart in the mounting groove. The adjustment plates are slidably arranged in the direction toward the screen rod. Multiple adjustment seats are provided on each adjustment plate. The adjustment seats are correspondingly arranged at the middle of the gap between two adjacent adjustment seats on an adjacent adjustment plate. The adjustment seats are slidably arranged on the adjustment plate in the direction of the screen rod arrangement. Multiple adjustment rods are provided. The two ends of the adjustment rods are rotatably connected to the adjustment seats on two adjustment plates respectively. The end of the screen rod is rotatably arranged on the adjustment rod.

[0010] By adopting the above technical solution, the adjusting plate moves, driving the adjusting rod to rotate. At the same time, the adjusting seat slides on the adjusting plate, the adjusting rod rotates to an inclined state, and the adjusting seats on the other two adjusting plates move simultaneously, driving the screen rod to move, thereby adjusting the distance between two adjacent screen rods, and thus adjusting the size of the screen holes.

[0011] Optionally, a control rod is provided in the mounting groove. The control rod is arranged along the arrangement direction of the screen rods and slides along its own length. An adjustment groove is provided on the adjustment plate along the length direction of the screen rods. One end of the adjustment groove is inclined away from the screen rods. A guide rod is provided on the control rod. The end of the guide rod is provided with a bent part. The bent part slides in the adjustment groove. The different positions of the bent part and the adjustment groove are coordinated to adjust the position of the adjustment plate.

[0012] By adopting the above technical solution, the control rod is moved, which drives the guide rod to move. The movement of the guide rod causes the bending part and the adjustment groove to cooperate at different positions, thereby driving the adjustment plate to move and adjusting the position of the screen rod.

[0013] Optionally, the guide rod is provided in two sets, which are arranged on both sides of the control rod, and the two sets of guide rods and the two adjustment plates are arranged in a one-to-one correspondence.

[0014] By adopting the above technical solution, two sets of guide rods are set on the control rod. The two sets of guide rods drive the two adjusting plates to move simultaneously, so that the two adjusting plates move synchronously, thereby improving the stability of the screen rod when it moves.

[0015] Optionally, the screening frame has an auxiliary rod and an auxiliary gear, the auxiliary gear being rotatably mounted in the mounting groove, and the control rod having an auxiliary tooth groove that meshes with the auxiliary gear on one side near the auxiliary gear, and the auxiliary rod and the auxiliary gear being coaxially connected.

[0016] By adopting the above technical solution, the auxiliary rod is rotated, and the auxiliary rod drives the control rod to move through the auxiliary gear, thereby adjusting the position of the control rod and thus adjusting the position of the adjustment plate.

[0017] Optionally, two auxiliary rods and two sets of screen rods are provided correspondingly, the two auxiliary rods are arranged perpendicular to each other, and a bevel gear set is provided between the two auxiliary rods for connecting the two.

[0018] By adopting the above technical solution, a bevel gear set is set between the two auxiliary rods. When one of the auxiliary rods is rotated, the bevel gear set makes the two sets of auxiliary rods rotate synchronously, thereby adjusting the position of the two sets of screen rods at the same time, so that the size of the screen holes changes uniformly. This facilitates the cleaning of asphalt and allows the size of the screen holes to be adjusted according to different screening requirements.

[0019] Optionally, the screening frame is provided with a limiting component, which includes a worm gear and a worm. The end of the auxiliary rod extends to the outside of the screening frame. The worm gear is coaxially disposed outside the auxiliary rod. The worm rotates on the screening frame, and the worm and the worm gear mesh.

[0020] By adopting the above technical solution, the rotating worm gear drives the auxiliary rod to rotate through the worm wheel. The worm wheel and worm gear have a self-locking mechanism, which reduces the phenomenon of the adjusting plate shifting after the position of the screen rod is adjusted, and improves the stability of the screen rod.

[0021] Optionally, a ball bearing is rotatably mounted on the adjusting seat, and a stabilizing groove is provided on the side of the adjusting plate near the adjusting seat. The ball bearing is engaged in the stabilizing groove and slides within the stabilizing groove.

[0022] By adopting the above technical solution, the adjusting seat uses a combination of balls and a stabilizing groove to reduce the friction between the adjusting seat and the adjusting plate when the adjusting seat moves, so as to adjust the position of the adjusting seat.

[0023] Optionally, a drive rack is slidably disposed in the mounting groove. The drive rack is perpendicular to the screen rod. One end of the drive rack extends to the outside of the mounting groove and connects to the mounting frame. The screen rod passes through the adjusting rod. A drive gear is disposed at the end of the screen rod near the adjusting rod. The drive gear meshes with the drive rack.

[0024] By adopting the above technical solution, when the screening frame moves, the drive gear rotates and drives the screen rod to rotate. That is, while the screening frame moves back and forth, the screen rod also rotates and swings synchronously, so that the asphalt can pass through the screen holes or separate from the screen holes, reducing the phenomenon of asphalt clogging in the screen holes.

[0025] Optionally, the vibration assembly includes a drive component, an eccentric cam, and a reset component. The eccentric cam is rotatably mounted on the mounting frame, and the side of the eccentric cam abuts against the side of the screening frame. The reset component is mounted on the mounting frame and connected to the side of the screening frame away from the eccentric cam to drive the screening frame to move in the direction toward the eccentric cam. The output end of the drive component is connected to the eccentric cam to drive the eccentric cam to rotate.

[0026] By adopting the above technical solution, the driving component drives the eccentric cam to rotate, and under the action of the eccentric cam and the reset component, the screening frame moves back and forth, causing the screening frame to vibrate, thereby screening the asphalt. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a screening device for road asphalt recycling according to an embodiment of this application.

[0028] Figure 2 This is a structural view of the screening frame in the screening device for road asphalt recycling according to an embodiment of this application.

[0029] Figure 3 This is a structural view of the installation groove in the screening device for road asphalt recycling according to an embodiment of this application.

[0030] Figure 4 This is a structural view of the control rod in the screening device for road asphalt recycling according to an embodiment of this application.

[0031] Figure 5 This is a structural view of the adjustment component in the screening device for road asphalt recycling according to an embodiment of this application.

[0032] Figure 6 This is a structural view of the limiting member in the screening device for road asphalt recycling according to an embodiment of this application.

[0033] Reference numerals: 1. Mounting frame; 11. Drive rack; 12. Elastic element; 13. Mounting plate; 2. Screening frame; 21. Mounting groove; 22. Slide groove; 3. Screen; 31. Screen rod; 311. Drive gear; 4. Vibration assembly; 41. Drive element; 42. Eccentric cam; 43. Reset element; 5. Guide frame; 51. Feed inlet; 6. Adjustment assembly; 61. Adjustment plate; 611. Stabilizing groove; 612. Adjusting groove; 62. Adjusting rod; 63. Adjusting seat; 631. Ball bearing; 7. Control rod; 71. Guide rod; 711. Bending part; 72. Auxiliary tooth groove; 8. Auxiliary rod; 81. Auxiliary gear; 82. Limiting element; 821. Worm gear; 822. Worm; 83. Bevel gear set. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0035] This application discloses a screening device for road asphalt recycling. (Ref.) Figure 1 and Figure 2 The screening device for road asphalt recycling includes a mounting frame 1, a screening frame 2 slidably mounted on the mounting frame 1, and a screen 3 for screening asphalt inside the screening frame 2. A vibration assembly 4 is mounted on the mounting frame 1 and connected to the screening frame 2. During asphalt recycling, asphalt is added to the screening frame 2, and then the vibration assembly 4 drives the screening frame 2 to vibrate on the mounting frame 1, thus screening the asphalt.

[0036] Reference Figure 1 and Figure 2 The vibration assembly 4 includes a drive component 41, an eccentric cam 42, and a reset component 43. The eccentric cam 42 is rotatably mounted on the mounting frame 1, and its side abuts against the side of the screening frame 2. The reset component 43 can be a spring, mounted on the mounting frame 1 and positioned along the sliding direction of the screening frame 2. One end of the spring is connected to the side of the screening frame 2 opposite to the eccentric cam 42, and the other end is connected to the mounting frame 1. The drive component 41 can be a motor, mounted on the mounting frame 1, and its output end is connected to the eccentric cam 42 to drive its rotation. The drive component 41 drives the eccentric cam 42 to rotate, and simultaneously, in conjunction with the spring, drives the screening frame 2 to reciprocate. As the eccentric cam 42 rotates rapidly, the screening frame 2 vibrates reciprocally, thus screening the asphalt.

[0037] Reference Figure 2 and Figure 3A guide frame 5 is provided on the screening frame 2, and a feed inlet 51 is provided on the guide frame 5. The feed inlet 51 corresponds to the middle position of the screen 3, and the edges of the feed inlet 51 and the edges of the screen 3 are spaced apart. The screen 3 includes two sets of screen rods 31 arranged perpendicularly to each other. Each set of screen rods 31 includes multiple screen rods 31 arranged at intervals. The two sets of screen rods 31 together form multiple screen holes for screening asphalt. An installation groove 21 is provided inside the screening frame 2. A sliding groove 22 communicating with the installation groove 21 is provided on the side of the screening frame 2 near the screen 3. The ends of the screen rods 31 extend into the installation groove 21 through the sliding groove 22. The screen rods 31 slide in the sliding groove 22 in the direction toward their adjacent screen rods 31, that is, the distance between the two screen rods 31 changes when the screen rods 31 slide. An adjustment component 6 is provided in the mounting groove 21. The adjustment component 6 is connected to the screen rod 31 and is used to adjust the position of the screen rod 31. The size of the screen hole is adjusted by adjusting the position of the screen rod 31. When the screen hole is blocked, the size of the screen hole can be adjusted by adjusting the position of the screen rod 31 so that the blocked asphalt can be separated from the screen hole and the asphalt can be cleaned.

[0038] Reference Figure 4 and Figure 5 The adjusting assembly 6 includes adjusting plates 61, adjusting rods 62, and adjusting seats 63. Two adjusting plates 61 are spaced apart within the mounting groove 21, with each plate positioned on opposite sides of the plane containing the screen rod 31. The adjusting plates 61 slide within the mounting groove 21 in the direction towards the screen rod 31. Multiple adjusting seats 63 are provided on each adjusting plate 61, corresponding to the gaps between adjacent adjusting seats 63 on adjacent adjusting plates 61. The adjusting seats 63 slide on the adjusting plates 61 in the direction in which the screen rods 31 are arranged. Multiple adjusting rods 62 are provided, positioned between two adjusting plates 61. Both ends of the adjusting rods 62 are rotatably connected to the adjusting seats 63, meaning the adjusting rods 62 are inclined. The end of the screen rod 31 passes through the adjusting rod 62, and the screen rod 31 rotates on the adjusting rod 62.

[0039] The movable adjusting plate 61 drives the adjusting rod 62 to rotate via the adjusting seat 63. At the same time, the adjusting seat 63 slides on the adjusting plate 61. When the adjusting rod 62 rotates, it drives the screen rod 31 to move, thereby adjusting the size of the screen holes. Meanwhile, multiple adjusting rods 62 rotate at the same angle, so that the multiple screen rods 31 after adjustment are evenly distributed.

[0040] Reference Figure 4 and Figure 5A ball bearing 631 is rotatably mounted on the adjusting seat 63. A stabilizing groove 611 is formed on the side of the adjusting plate 61 near the adjusting seat 63, and the stabilizing groove 611 is arranged along the sliding direction of the adjusting seat 63. The ball bearing 631 is engaged in the stabilizing groove 611 and slides within the stabilizing groove 611 along its length. The adjusting seat 63, through the cooperation of the ball bearing 631 and the adjusting plate 61, reduces the friction of the adjusting seat 63 during movement, thereby facilitating the adjustment of the position of the adjusting seat 63. The side of the screen rod 31 abuts against the inner wall of the slide groove 22, that is, the screen rod 31 and the inner wall of the slide groove 22 slide against each other. After the position of the screen rod 31 is adjusted, the inner wall of the slide groove 22 supports the screen rod 31, improving the stability of the screen rod 31 during screening.

[0041] Reference Figure 4 and Figure 5 A control rod 7 for adjusting the position of the adjusting plate 61 is provided in the mounting groove 21. The control rod 7 is arranged along the arrangement direction of the screen rods 31 and slides along its own length within the mounting groove 21. An adjusting groove 612 is formed on the adjusting plate 61 along the length direction of the screen rods 31. The adjusting groove 612 is arranged along the sliding direction of the adjusting seat 63, and one end of the adjusting groove 612 is inclined away from the screen rods 31. A guide rod 71 is provided on the side of the control rod 7 near the adjusting plate 61. A bent part 711 is provided at the end of the guide rod 71 away from the control rod 7 and slides within the adjusting groove 612. When the control rod 7 is moved, the control rod 7 drives the guide rod 71 to move. The movement of the guide rod 71 causes the bent part 711 to abut against different positions within the adjusting groove 612, thereby adjusting the position of the adjusting plate 61.

[0042] Reference Figure 4 and Figure 5 Two sets of guide rods 71 ​​are provided, and the two sets of guide rods 71 ​​are located on both sides of the control rod 7. The two sets of guide rods 71 ​​and the two adjusting plates 61 are arranged in a one-to-one correspondence. That is, when the control rod 7 moves, the positions of the two adjusting plates 61 are adjusted simultaneously, so that the screen rod 31 slides in the same plane.

[0043] Reference Figure 5 and Figure 6An auxiliary rod 8 and an auxiliary gear 81 are mounted on the screening frame 2. The auxiliary gear 81 is rotatably mounted within the mounting groove 21. An auxiliary tooth groove 72 is provided on the side of the control rod 7 near the auxiliary gear 81. The auxiliary gear 81 and the auxiliary tooth groove 72 mesh. The auxiliary rod 8 and the auxiliary gear 81 are coaxially connected, and the end of the auxiliary rod 8 extends to the outside of the screening frame 2. When the position of the screen rod 31 needs to be adjusted, the auxiliary rod 8 is rotated. The auxiliary rod 8 drives the adjusting plate 61 to move through the auxiliary gear 81, thereby adjusting the position of the screen rod 31. The auxiliary rod 8 is set perpendicular to the control rod 7. Two sets of adjusting components 6 are set on the screening frame 2 and corresponding to both ends of the screen rod 31. Two auxiliary gears 81 and two control rods 7 are correspondingly set. When the auxiliary rod 8 is rotated, the auxiliary rod 8 moves synchronously to both ends of the screen rod 31 through the two auxiliary gears 81, improving the stability of the screen rod 31 during movement.

[0044] Reference Figure 5 and Figure 6 Two auxiliary rods 8 and two sets of screen rods 31 are correspondingly provided, with the two auxiliary rods 8 arranged perpendicularly to each other. A bevel gear set 83 is provided between the two auxiliary rods 8, connecting the two auxiliary rods 8. That is, when one auxiliary rod 8 rotates, it drives the other auxiliary rod 8 to rotate synchronously through the bevel gear, thereby synchronously adjusting the position of all screen rods 31, so that the size of the screen holes increases or decreases uniformly to clean the asphalt. At the same time, the size of the screen holes can be adjusted according to the screening requirements to screen asphalt particles of different sizes.

[0045] Reference Figure 5 and Figure 6 A limiting component 82 is provided on the screening frame 2. The limiting component 82 includes a worm gear 821 and a worm 822. The end of the auxiliary rod 8 extends to the outside of the screening frame 2. The worm gear 821 is coaxially disposed outside the auxiliary rod 8. The worm 822 is rotatably disposed on the screening frame 2, and the worm 822 and the worm gear 821 mesh. The worm gear 821 is rotated by the worm 822 to rotate the adjusting rod 62. At the same time, the worm gear 821 and the worm 822 have a self-locking mechanism. After the position of the screen rod 31 is adjusted, the phenomenon of screen rod 31 deviation is reduced, and the stability of screen rod 31 is further improved.

[0046] Reference Figure 5 and Figure 6A drive rack 11 is installed in the mounting groove 21, perpendicular to the screen rod 31. One end of the drive rack 11 extends to the outside of the mounting groove 21 and connects to the mounting frame 1, meaning that when the screening frame 2 vibrates, the screen rod 31 remains stationary relative to the screening frame 2. A drive gear 311 is installed at the end of the screen rod 31 near the adjusting rod 62, meshing with the drive rack 11. When the screening frame 2 moves, the drive gear 311 rotates, causing the screen rod 31 to rotate. That is, while the screening frame 2 reciprocates, the screen rod 31 also rotates and swings synchronously, so that asphalt can pass through or separate from the screen holes, reducing the phenomenon of asphalt clogging in the screen holes.

[0047] Reference Figure 5 and Figure 6 A mounting plate 13 is provided on the mounting frame 1, and an elastic element 12 is provided at the end of the drive rack 11. The elastic element 12 is arranged along the length direction of the drive rack 11, and the elastic element 12 can be set as a spring. One end of the spring is connected to the drive rack 11, and the other end is connected to the mounting plate 13. When the screening frame 2 moves, the drive rack 11 moves relative to the screening frame 2 to compress the spring, driving the screen rod 31 to rotate. At the same time, the elastic element 12 is provided to prevent the screen rod 31 from deforming due to excessive cooperation force between the drive rack 11 and the drive gear 311, thus protecting the screen rod 31.

[0048] The implementation principle of this application is as follows: when the screen holes are blocked, the auxiliary rod 8 is rotated. The auxiliary rod 8 drives the adjusting plate 61 to move through the control rod 7. The movement of the adjusting plate 61 drives the adjusting rod 62 to rotate. The rotation of multiple adjusting rods 62 drives multiple screen rods 31 to move synchronously. The movement of the screen rods 31 adjusts the position of the screen holes, enlarging the screen holes so as to clean the asphalt and improve the asphalt screening efficiency.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A screening device for road asphalt recycling, comprising a mounting frame (1), characterized in that: A screening frame (2) is slidably mounted on the mounting frame (1), and a screen (3) is mounted on the screening frame (2). A vibration component (4) is mounted on the mounting frame (1). The vibration component (4) is connected to the screening frame (2) to drive the screening frame (2) to vibrate. The screen (3) includes two sets of screen rods (31). The two sets of screen rods (31) are perpendicular to each other and form multiple screen holes between the two sets of screen rods (31). An installation groove (21) is opened inside the screening frame (2). The screening frame (2) is close to the screen rods (31). 1) A sliding groove (22) communicating with the mounting groove (21) is provided on one side. The end of the screen rod (31) extends into the mounting groove (21) through the sliding groove (22). The screen rod (31) slides in the sliding groove (22) in the direction toward the adjacent screen rod (31). An adjustment component (6) is provided in the mounting groove (21). The adjustment component (6) is connected to the screen rod (31) to adjust the position of the screen rod (31). The vibration component (4) can drive the screening frame (2) to vibrate back and forth in the left and right directions. The screening frame (2) is provided with a guide frame (5), and a feed inlet (51) is opened on the guide frame (5) at a position corresponding to the middle of the screen (3). The edge of the feed inlet (51) and the edge of the screen (3) are spaced apart. The adjustment component (6) includes an adjustment plate (61), an adjustment rod (62), and an adjustment seat (63). Two adjustment plates (61) are spaced apart in the mounting groove (21). The adjustment plates (61) are slidably arranged in the direction toward the screen rod (31). The adjustment seat (63) Multiple adjustment seats (63) are provided on each adjustment plate (61). The adjustment seats (63) are correspondingly provided at the middle of the gap between two adjacent adjustment seats (63) on the adjacent adjustment plate (61). The adjustment seats (63) are slidably arranged on the adjustment plate (61) along the direction of the arrangement of the screen rods (31). Multiple adjustment rods (62) are provided. The two ends of the adjustment rods (62) are rotatably connected to the adjustment seats (63) on the two adjustment plates (61) respectively. The ends of the screen rods (31) are rotatably arranged on the adjustment rods (62). A control rod (7) is provided in the mounting groove (21). The control rod (7) is arranged along the arrangement direction of the screen rod (31). The control rod (7) is slidably arranged along its own length direction. An adjustment groove (612) is provided on the adjustment plate (61) along the length direction of the screen rod (31). One end of the adjustment groove (612) is inclined in the direction away from the screen rod (31). A guide rod (71) is provided on the control rod (7). A bend (711) is provided at the end of the guide rod (71). The bend (711) is slidably arranged in the adjustment groove (612). The different positions of the bend (711) and the adjustment groove (612) are coordinated to adjust the position of the adjustment plate (61). The screening frame (2) is provided with an auxiliary rod (8) and an auxiliary gear (81). The auxiliary gear (81) is rotatably arranged in the mounting groove (21). The control rod (7) has an auxiliary tooth groove (72) that meshes with the auxiliary gear (81) on one side near the auxiliary gear (81). The auxiliary rod (8) and the auxiliary gear (81) are coaxially connected.

2. The screening device for road asphalt recycling according to claim 1, characterized in that: The guide rod (71) is provided in two sets, and the two sets of guide rods (71) are provided on both sides of the control rod (7). The two sets of guide rods (71) and the two adjustment plates (61) are provided in a one-to-one correspondence.

3. The screening device for road asphalt recycling according to claim 1, characterized in that: The auxiliary rod (8) and the two sets of screen rods (31) are provided in two corresponding positions. The two auxiliary rods (8) are arranged perpendicular to each other, and a bevel gear set (83) is provided between the two auxiliary rods (8) for connecting the two.

4. The screening device for road asphalt recycling according to claim 1, characterized in that: The screening frame (2) is provided with a limiting member (82), which includes a worm wheel (821) and a worm (822). The end of the auxiliary rod (8) extends to the outside of the screening frame (2). The worm wheel (821) is coaxially arranged outside the auxiliary rod (8). The worm (822) is rotatably arranged on the screening frame (2). The worm (822) and the worm wheel (821) mesh.

5. The screening device for road asphalt recycling according to claim 1, characterized in that: The adjusting seat (63) is rotatably provided with a ball bearing (631), and the adjusting plate (61) is provided with a stabilizing groove (611) on the side near the adjusting seat (63). The ball bearing (631) is locked in the stabilizing groove (611) and slides in the stabilizing groove (611).

6. The screening device for road asphalt recycling according to claim 1, characterized in that: A drive rack (11) is slidably disposed in the mounting groove (21). The drive rack (11) is disposed perpendicular to the screen rod (31). One end of the drive rack (11) extends to the outside of the mounting groove (21) and connects to the mounting frame (1). The screen rod (31) passes through the adjusting rod (62). A drive gear (311) is disposed at one end of the screen rod (31) near the adjusting rod (62). The drive gear (311) meshes with the drive rack (11).

7. The screening device for road asphalt recycling according to claim 1, characterized in that: The vibration assembly (4) includes a drive member (41), an eccentric cam (42), and a reset member (43). The eccentric cam (42) is rotatably mounted on the mounting frame (1). The side of the eccentric cam (42) abuts against the side of the screening frame (2). The reset member (43) is mounted on the mounting frame (1). The reset member (43) is connected to the side of the screening frame (2) away from the eccentric cam (42) to drive the screening frame (2) to move in the direction toward the eccentric cam (42). The output end of the drive member (41) is connected to the eccentric cam (42) to drive the eccentric cam (42) to rotate.

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