Asphalt waste recycling device for highway pavement

Abstract

The invention provides a highway pavement asphalt waste recycling device which comprises a table body, a screening box is arranged at the top of the table body, a crushing box is arranged at the top of the screening box, a feeding port is formed in the top of the crushing box in a penetrating mode, and a first crushing mechanism is arranged in the feeding port; a first smashing roller set and a second smashing roller set which are in linkage with the first smashing mechanism are rotationally arranged in the first material returning opening and the second material returning opening correspondingly. When the asphalt waste crushing device is used, asphalt waste is fed into the feeding port through the feeding machine, the driving mechanism drives the first crushing mechanism to operate, the asphalt waste is crushed, the crushed asphalt falls into the screening box, and large-particle asphalt fragments are discharged to the two sides through the screening box and fall into the inclined groove; according to the device, asphalt fragments are conveyed to the corresponding first material returning opening and the second material returning opening through the crushed material returning mechanism, secondary crushing is conducted through the first crushing roller set and the second crushing roller set, the device does not need to be stopped for waiting, continuous crushing of asphalt waste is achieved, and the crushing and recycling efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of road construction material recycling equipment, in particular to a device for recycling waste asphalt on highway pavement. Background Art

[0002] Highway asphalt waste refers to waste asphalt mixtures generated during road maintenance, reconstruction or expansion. These wastes usually contain old asphalt binders, stone aggregates of different particle sizes, and a small amount of mineral powder and other additives. After crushing and screening, waste asphalt can be recycled in new road construction or repair projects, which not only saves resources but also reduces environmental pollution. Through hot regeneration or cold regeneration technology, waste asphalt can be recombined with new asphalt mixtures to form new materials with good performance, thereby extending the service life of the road and improving economic benefits.

[0003] Patent document CN111617834A discloses a recycled asphalt regeneration feeder for highway construction, and the protected claims include: an opposed crushing mechanism, a screening mechanism, a material pushing mechanism, a lifting mechanism, a material return mechanism, a spiral feeding mechanism and a stirring mechanism, wherein the screening mechanism is located at the discharge end of the opposed crushing mechanism, the material pushing mechanism is installed on the screening mechanism, the material return mechanism is located at the discharge end of the material pushing mechanism, the material return mechanism is installed at the working end of the lifting mechanism, the feeding end of the spiral feeding mechanism is located at the discharge end of the screening mechanism, and the discharge end of the spiral feeding mechanism is located at the feeding end of the stirring mechanism. This technical solution can recycle asphalt and use the reconfigured asphalt for pavement.

[0004] The recycled asphalt regeneration feeder for highway construction in the above-mentioned public documents solves the problem of screening and re-crushing the crushed asphalt. However, when the material pushing mechanism sends the large-particle waste asphalt screened by the screening mechanism to the material return mechanism, the screening mechanism needs to stop running, and the crushing mechanism also needs to stop running. This leads to the problem that the device cannot continuously and uninterruptedly crush and recycle the asphalt waste, greatly affecting the crushing and recycling progress of the asphalt waste. At the same time, it is also not convenient to classify and collect the large-particle waste asphalt after screening, and its applicability is low. Summary of the invention

[0005] The purpose of the present invention is to provide a device for recycling waste asphalt on a highway pavement, aiming to solve the problem that the waste asphalt recycling device on a highway pavement in the prior art cannot continuously crush and recycle the waste asphalt.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a device for recycling waste asphalt on a highway pavement, comprising a table body with a material drop opening penetrating through the top, a screening box is arranged on the top of the table body, and a crushing box is arranged on the top of the screening box;

[0007] A feeding port is provided through the top of the crushing box, a first return port and a second return port are symmetrically and staggeredly provided on the top of the crushing box along its length direction, a first crushing mechanism is provided inside the feeding port, and a first crushing roller group and a second crushing roller group linked to the first crushing mechanism are rotatably provided inside the first return port and the second return port respectively;

[0008] The two sides of the screening box are symmetrically provided with inclined slots, and the interior of the inclined slots is provided with a crushed material return mechanism that cooperates with the first crushing mechanism and the second crushing mechanism;

[0009] A driving mechanism for driving the first crushing mechanism, the second crushing mechanism and the crushed material returning mechanism is arranged inside the table body.

[0010] Preferably, the first pulverizing mechanism comprises a first pulverizing roller and a second pulverizing roller rotatably arranged inside the feed port, one end of the rotating shaft of the first pulverizing roller and the second pulverizing roller is penetrated to the outside of the pulverizing box and is provided with a transmission gear, and the end of the rotating shaft of the first pulverizing roller is also provided with a first pulley;

[0011] A first driving cavity is arranged between the first return port and the feed port, and a first driving gear and a first driven gear whose ends are connected to the first crushing roller group through a rotating shaft are rotatably arranged inside the first driving cavity, and the first driving gear is connected to the end of the first crushing roller through the rotating shaft;

[0012] A second driving cavity is arranged between the second return port and the feed port, and a second driving gear and a second driven gear are rotatably arranged inside the second driving cavity, whose ends are connected to the second crushing roller group through a rotating shaft, and the second driving gear is connected to the end of the second crushing roller through a rotating shaft.

[0013] Preferably, the screening box includes a lower L-shaped mounting plate which is arranged in an eight-shaped shape in front and behind the inner wall of the screening box, a screen frame is arranged on the top of the lower L-shaped mounting plate through a plurality of first springs, a connecting plate is arranged between the two screen frames, a vibrating body is arranged at the bottom of the connecting plate, a dividing plate is arranged above the connecting plate, an upper L-shaped mounting plate is symmetrically arranged above the screen frame, and the bottom of the upper L-shaped mounting plate is connected to the top of the screen frame through a second spring.

[0014] Preferably, openings are provided on both sides of the screen box, a material guide plate is provided at the discharge end of the screen frame, and the material guide plate extends through the opening to above the chute.

[0015] Preferably, the crushed material return mechanism is a vertical shell arranged inside the chute, a conveying shell is arranged on one side of the vertical shell, the bottom of the vertical shell has an opening, a metal chain plate is arranged inside the vertical shell through a transmission shaft, a plurality of feed shells are evenly arranged outside the metal chain plate, a guide block is arranged on the back of the feed shell, and a triangular block installed on the metal chain plate is arranged between the guide block and another feed shell.

[0016] Preferably, the driving mechanism includes a motor arranged inside the table body, and the output end of the motor is sequentially provided with a second pulley and a first active bevel gear, and the second pulley is connected to the first pulley through a belt to drive the crushing box to operate.

[0017] Preferably, first rotating shaft mounting seats are symmetrically and slidably arranged on both sides of the first active bevel gear, a first rotating shaft is rotatably arranged on the inner wall of the first rotating shaft mounting seat, a first driven bevel gear is arranged at one end of the first rotating shaft, a spline shaft is arranged at the other end of the first rotating shaft, a second rotating shaft having a spline groove at one end is arranged at one side of the spline shaft through the second rotating shaft mounting seat, the second rotating shaft mounting seat is fixedly arranged inside the table body, and a second active bevel gear is arranged at the other end of the second rotating shaft;

[0018] The inner rotation of the table body is provided with a third rotating shaft connected with the transmission shaft, and one end of the third rotating shaft is provided with a second driven bevel gear.

[0019] Preferably, the second rotating shaft mounting seat is provided with a moving component for controlling the movement thereof.

[0020] Preferably, the moving component includes a clearance opening and a Z-shaped transmission member, the clearance opening is symmetrically opened on the front of the table body, one end of the Z-shaped transmission member is connected to the second rotating shaft mounting seat, a locking column is passed through the Z-shaped transmission member, and a locking hole cooperating with the locking column is symmetrically opened on the front of the table body.

[0021] Preferably, a discharge port is provided through the bottom of the inclined chute, a receiving groove is provided on the top of the inner wall of the discharge port, a slide plate is provided inside the receiving groove, a transmission member is provided on one side of the slide plate, and the transmission member is connected to the Z-shaped transmission member.

[0022] The beneficial effects of the present invention are:

[0023] 1. When the present invention is in use, the asphalt waste is fed into the feed port through the feeder, and the driving mechanism drives the first crushing mechanism to operate and crush the asphalt waste. The crushed asphalt crushed material falls into the screening box, and the small-particle asphalt fragments are screened by the screening box and fall to the bottom of the table body through the drop port, and the large-particle asphalt fragments are discharged to both sides of the screening box and finally fall into the corresponding chute. The asphalt fragments in the chute are transported to the corresponding first return port and the second return port by the corresponding crushing return mechanism, and are crushed for the second time by the first crushing roller group and the second crushing roller group in the first return port and the second return port. The device does not need to stop and wait during operation, thereby achieving the purpose of continuous crushing of the asphalt waste and improving the crushing and recycling progress when recycling the asphalt waste;

[0024] 2. When the present invention is in use, the first crushing mechanism, the second crushing mechanism and the crushed material return mechanism can be driven to operate at the same time through the setting of the driving mechanism, thereby improving the applicability of the asphalt waste recycling device. At the same time, through the setting of the moving component, the operation of the material return mechanism can be stopped while the crushing box is running. When the material return mechanism stops running, the device can classify large-particle asphalt fragments. People can control the start and stop of the crushed material return mechanism according to the use requirements, thereby greatly improving the classification and recovery effect of asphalt fragments;

[0025] 3. When the present invention is in use, the two screen frames are arranged in an outward eight-shaped shape, and the crushed asphalt fragments fall onto the dividing plate, and the asphalt fragments are guided to the two screen frames by the dividing plate, thereby reducing the problem that the crushed asphalt fragments in the prior art are accumulated on the screen after crushing to form an asphalt fragment pile, and then vibrated and screened, resulting in a part of the asphalt fragments on the top of the asphalt fragment pile cannot be screened by the screen frame in time, and the asphalt fragments are accumulated on the screen frame, and at the same time, the efficiency of the screen frame in screening the asphalt fragments is improved;

[0026] 4. When the present invention is in use, the driving mechanism drives the metal chain plate to run. When the metal chain plate runs, it drives the feed shell to pass through the bottom of the chute. The feed shell loads a part of the fragments at the bottom of the chute into the interior. When the feed shell runs to the highest point of the metal chain plate and enters the other side of the metal chain plate, the asphalt fragments naturally slide onto the guide block, and are then guided by the guide block to the interior of the conveying shell, and finally conveyed by the conveying shell to the top of the crushing box, and enter the corresponding first return port and second return port. At the same time, the setting of the triangular block speeds up the speed at which the asphalt fragments enter the conveying shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a cross-sectional structural schematic diagram of the present invention;

[0029] Figure 3It is a schematic diagram of the cross-sectional structure of the crushing box of the present invention from top view;

[0030] Figure 4 It is a schematic diagram of the three-dimensional structure of the screen frame of the present invention;

[0031] Figure 5 It is a schematic diagram of the cross-sectional structure of the table body of the present invention when viewed from above;

[0032] Figure 6 The present invention Figure 1 Schematic diagram of the structure at A in the middle;

[0033] Figure 7 The present invention Figure 2 Schematic diagram of the structure at B in the middle;

[0034] Figure 8 The present invention Figure 2 Schematic diagram of the structure at C in the middle;

[0035] Fig. 9 The present invention Figure 5 Schematic diagram of the structure at D in the middle;

[0036] Fig.10 The present invention Figure 5 Schematic diagram of the structure at E in the middle.

[0037] In the figure: 1, table body; 2, screening box; 3, crushing box; 4, crushed material return mechanism; 5, feeding port; 6, first crushing roller; 7, second crushing roller; 8, first return port; 9, first crushing roller group; 10, second return port; 11, second crushing roller group; 12, transmission gear; 13, protective shell; 14, first pulley; 15, second driving cavity; 16, second driving gear; 17, second driven gear; 18, first driving cavity; 19, first driving gear; 20, first driven gear; 21, belt; 22, motor; 23, second pulley; 24, first driving bevel gear; 25, first rotating shaft mounting seat; 26, second rotating shaft mounting seat; 27, second rotating shaft; 28, spline groove; 2 9. Spline shaft; 30. Second active bevel gear; 32. Second driven bevel gear; 33. Transmission shaft; 34. Bevel groove; 35. Discharge port; 36. Storage slot; 38. Transmission member; 40. Metal chain plate; 41. Feed shell; 42. Guide block; 43. Triangle block; 44. Conveying shell; 45. Dropping port; 46. Lower L-shaped mounting plate; 47. First spring; 48. Screen frame; 49. Guide plate; 50. Dividing plate; 51. Connecting plate; 52. Vibrating body; 53. Make way port; 54. Z-shaped transmission member; 55. Positioning hole; 56. Positioning column; 58. Upper L-shaped mounting plate; 59. Second spring; 62. First driven bevel gear; 63. First rotating shaft; 64. Third rotating shaft; 65. Slide plate. DETAILED DESCRIPTION

[0038] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0039] Embodiment 1: This embodiment provides a device for recycling waste asphalt on road surfaces, such as Figure 1 As shown, it comprises a table body 1 with a material drop opening 45 running through the top, a screening box 2 is arranged on the top of the table body 1, and a crushing box 3 is arranged on the top of the screening box 2; a feeding opening 5 is running through the top of the crushing box 3, and a first return opening 8 and a second return opening 10 are symmetrically and staggeredly provided on the top of the crushing box 3 along its length direction, a first crushing mechanism is arranged inside the feeding opening 5, and a first crushing roller group 9 and a second crushing roller group 11 which are linked to the first crushing mechanism are rotatably arranged inside the first return opening 8 and the second return opening 10 respectively; inclined slots 34 are symmetrically arranged on both sides of the screening box 2, and a crushed material return mechanism 4 which cooperates with the first crushing mechanism and the second crushing mechanism is arranged inside the inclined slots 34; a driving mechanism for driving the first crushing mechanism, the second crushing mechanism and the crushed material return mechanism 4 to operate is arranged inside the table body 1. When this embodiment is working specifically, the process is as follows:

[0040] When in use, people feed the asphalt waste into the feed port 5 through the feeder, and the driving mechanism drives the first crushing mechanism to operate and crush the asphalt waste. The crushed asphalt fragments fall into the screening box 2, and the small-particle asphalt fragments are screened by the screening box 2 and pass through the drop port 45 to fall to the bottom of the table body 1. The large-particle asphalt fragments are discharged to both sides of the screening box 2 and finally fall into the corresponding chute 34. The asphalt fragments in the chute 34 are transported to the corresponding first return port 8 and the second return port 10 by the corresponding fragment return mechanism 4, and are crushed for the second time by the first crushing roller group 9 and the second crushing roller group 11 in the first return port 8 and the second return port 10. The device does not need to stop and wait during operation, thereby achieving the purpose of continuous crushing of asphalt waste and improving the crushing and recovery progress when recycling asphalt waste.

[0041] Embodiment 2, on the basis of embodiment 1, as Figure 1 , Figure 3 and Figure 6As shown, the first pulverizing mechanism includes a first pulverizing roller 6 and a second pulverizing roller 7 rotatably arranged inside the feeding port 5, and a transmission gear 12 is arranged on one end of the rotating shaft of the first pulverizing roller 6 and the second pulverizing roller 7 after passing through the outside of the pulverizing box 3, and a first pulley 14 is also arranged on the end of the rotating shaft of the first pulverizing roller 6; a first driving chamber 18 is arranged between the first return port 8 and the feeding port 5, and a first driving gear 19 and a first driven gear 20 are rotatably arranged inside the first driving chamber 18, and the first driving gear 19 is connected to the end of the first pulverizing roller 6 through the rotating shaft; a second driving chamber 15 is arranged between the second return port 10 and the feeding port 5, and a second driving gear 16 and a second driven gear 17 are rotatably arranged inside the second driving chamber 15, and the second driving gear 16 is connected to the end of the second pulverizing roller 7 through the rotating shaft, and the process is as follows:

[0042] A protective shell 13 is provided at one end of the crushing box 3 to prevent external impurities from entering between the two transmission gears 12 and affecting the normal operation of the transmission gears 12; the first pulley 14 is driven to rotate by the driving mechanism, and the first pulley 14 drives the two transmission gears 12 to rotate through the rotating shaft, and the rotation of the two transmission gears 12 drives the first crushing roller 6 and the second crushing roller 7 to rotate and crush the asphalt waste, thereby achieving the purpose of preliminary crushing of the asphalt waste;

[0043] When the first crushing roller 6 rotates, the rotating shaft at its end drives the first driving gear 19 in the first driving chamber 18 to rotate, and the rotation of the first driving gear 19 drives the first driven gear 20 to rotate. Since the ends of the first driving gear 19 and the first driven gear 20 are respectively connected to the ends of the two crushing rollers of the first crushing roller group 9 through the rotating shaft, the first crushing roller group 9 is driven to operate to perform secondary crushing on the crushed materials transported by the crushed material return mechanism;

[0044] When the second crushing roller 7 rotates, the rotating shaft at its end drives the second driving gear 16 in the second driving chamber 15 to rotate, and the rotation of the second driving gear 16 drives the second driven gear 17 to rotate. Since the ends of the second driving gear 16 and the second driven gear 17 are respectively connected to the ends of the two crushing rollers of the second crushing roller group 11 through the rotating shaft, the second crushing roller group 11 is driven to operate to perform secondary crushing on the crushed materials transported by the crushed material return mechanism.

[0045] The crushing protrusions on the first crushing roller group 9 and the second crushing roller group 11 are smaller than the crushing protrusions on the first crushing roller 6 and the second crushing roller 7, and the crushing effect on unqualified asphalt fragments is better. The setting of the first crushing roller group 9 and the second crushing roller group 11 fully utilizes the kinetic energy of the driving mechanism, saving costs while also allowing unqualified fragments to be crushed in a targeted manner, thereby improving the practicability of the device.

[0046] Embodiment 3, on the basis of embodiment 1, as Figure 1 , Figures 2 to 3 As shown, the screening box 2 includes a lower L-shaped mounting plate 46 arranged in an eight-shaped shape at the front and rear of the inner wall of the screening box 2, a screening frame 48 is arranged on the top of the lower L-shaped mounting plate 46 through a plurality of first springs 47, a connecting plate 51 is arranged between the two screening frames 48, a vibrating body 52 is arranged at the bottom of the connecting plate 51, a material dividing plate 50 is arranged above the connecting plate 51, an upper L-shaped mounting plate 58 is symmetrically arranged above the screening frame 48, the bottom of the upper L-shaped mounting plate 58 is connected to the top of the screening frame 48 through a second spring 59, openings are provided on both sides of the screening box 2, a material guide plate 49 is provided at the discharge end of the screening frame 48, and the material guide plate 49 extends through the opening to the top of the chute 34, and the process is as follows:

[0047] Most of the screen frames 48 of the standard asphalt waste recycling device are tilted and arranged in a group. The crushed asphalt fragments are crushed and piled on the screen to form an asphalt fragment pile, and then vibrated and screened, resulting in a part of the asphalt fragments on the top of the asphalt fragment pile cannot be screened by the screen frame 48 in time, which leads to a reduction in the screening efficiency of the screen frame 48 for the asphalt fragments. Therefore, we designed two screen frames 48, which are arranged in an outward eight-shaped shape. The crushed asphalt fragments fall onto the dividing plate 50 and are guided to the two screen frames 48 by the dividing plate, thereby reducing the problem of asphalt fragments piling up on the screen frame 48 and improving the efficiency of the screen frame 48 in screening asphalt fragments.

[0048] When the screening box 2 is used to screen the asphalt fragments, the vibrating body 52 is started, the vibrating body 52 generates vibration and transmits the vibration to the screen frame 48 through the connecting plate 51. The screen frame 48 generates vibration through the setting of the first spring 47 and the second spring 59, so that the asphalt fragments on the screen frame 48 are screened, and the asphalt fragments with large particles are finally transported to the inside of the chute 34 through the guide plate 49.

[0049] Embodiment 4, on the basis of embodiment 1, as Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, the crushed material return mechanism 4 is a vertical shell arranged inside the chute 34, a conveying shell 44 is arranged on one side of the vertical shell, the bottom of the vertical shell has an opening, a metal chain plate 40 is arranged inside the vertical shell through the transmission shaft 33, a plurality of material conveying shells 41 are evenly arranged outside the metal chain plate 40, a material guide block 42 is arranged on the back of the material conveying shell 41, and a triangular block 43 installed on the metal chain plate 40 is arranged between the material guide block 42 and another material conveying shell 41. The process is as follows:

[0050] When it is necessary to transport the asphalt fragments in the chute 34 to the top of the crushing box 3, the drive shaft 33 is driven to rotate by the driving mechanism, and the rotation of the drive shaft 33 drives the metal chain plate 40 to run. When the metal chain plate 40 runs, it drives the feed shell 41 to pass through the bottom of the chute 34, and the feed shell 41 loads a part of the fragments at the bottom of the chute 34 into it. At the same time, the side of the feed shell 41 away from the metal chain plate 40 approaches the inner wall of the vertical shell after entering the vertical shell. When the feed shell 40 runs to the highest point of the metal chain plate 40 and enters the other side of the metal chain plate, the asphalt fragments naturally slide onto the guide block 42, and then are guided by the guide block 42 to the inside of the conveying shell 44, and finally are conveyed by the conveying shell 44 to the top of the crushing box 3 and enter the corresponding first return port 8 and second return port 10. At the same time, the setting of the triangular block 43 speeds up the speed at which the asphalt fragments enter the conveying shell 44.

[0051] Embodiment 5, on the basis of embodiment 1, as Figure 1 , Figures 5 to 10 As shown, the driving mechanism includes a motor 22 arranged inside the table body 1, and the output end of the motor 22 is sequentially provided with a second pulley 23 and a first active bevel gear 24, and the second pulley 23 is connected to the first pulley 14 through a belt 21 to drive the crushing box 3 to operate, and the process is as follows:

[0052] By starting the motor 22, the output end of the motor 22 drives the second belt pulley 23 to rotate. When the second belt pulley 23 rotates, the first belt pulley 14 is driven to rotate through the belt, thereby achieving the purpose of driving the crushing box 3 to operate.

[0053] Embodiment 6, on the basis of embodiment 5, as Figure 5 , Fig. 9 and Fig.10 As shown, the first active bevel gear 24 is symmetrically and slidably provided with a first shaft mounting seat 25 on both sides, the first shaft mounting seat 25 is rotatably provided with a first rotating shaft 63 on the inner wall, one end of the first rotating shaft 63 is provided with a first driven bevel gear 62, the other end of the first rotating shaft 63 is provided with a spline shaft 29, one side of the spline shaft 29 is provided with a second rotating shaft 27 with a spline groove 28 at one end through a second shaft mounting seat 26, the second shaft mounting seat 26 is fixedly provided inside the table body 1, and the other end of the second rotating shaft 27 is provided with a second active bevel gear 30; the table body 1 is rotatably provided with a third rotating shaft 64 connected to the transmission shaft 33, and one end of the third rotating shaft 64 is provided with a second driven bevel gear 32, and the process is as follows:

[0054] When the motor 22 drives the crushing box 3 to operate, the first active bevel gear 24 at its output end rotates synchronously. At this time, the first active bevel gear 24 drives the first driven bevel gear 62 meshing with it to rotate, and the rotation of the first driven bevel gear 62 drives the first rotating shaft 63 to rotate. When the first rotating shaft 63 rotates, it drives the second rotating shaft 27 to rotate under the action of the spline shaft 29 and the spline groove 28. When the second rotating shaft 27 rotates, it drives the second driven bevel gear 32 to rotate through the second active bevel gear 30. The rotation of the second driven bevel gear 32 drives the third rotating shaft 64 to rotate. The rotation of the third rotating shaft 64 drives the transmission shaft 33 to rotate, thereby achieving the purpose of driving the crushing return mechanism 4 to operate, and achieving the purpose of driving the first crushing mechanism, the second crushing mechanism and the crushing return mechanism 4 to operate by one motor 22, thereby improving the applicability of the asphalt waste recycling device.

[0055] Embodiment 7, on the basis of embodiment 6, as Figure 1 , Figure 5 , Figure 7 and Fig.10 As shown, a moving assembly for controlling the movement of the second shaft mounting seat 26 is provided, and the moving assembly includes a clearance opening 53 and a Z-shaped transmission member 54. The clearance opening 53 is symmetrically opened on the front of the table body 1, and one end of the Z-shaped transmission member 54 is connected to the second shaft mounting seat 26. A locking column 56 is penetrated on the Z-shaped transmission member 54, and a locking hole 55 matching the locking column 56 is symmetrically opened on the front of the table body 1. The process is as follows:

[0056] When there is no need to crush large-particle asphalt fragments and they are to be collected, it is necessary to stop the operation of the crushed material return mechanism and pull the locking column 56 out of the locking hole 55. At this time, the first rotating shaft mounting seat 25 is driven to move by pushing the Z-shaped transmission member 54. The movement of the first rotating shaft mounting seat 25 drives the first rotating shaft 63 to move. The movement of the first rotating shaft 63 drives the first driven bevel gear 62 away from the first active bevel gear 24, so that the two lose the transmission relationship. The arrangement of the spline shaft 29 and the spline groove 28 allows the first rotating shaft 63 to approach or move away from the second rotating shaft 27, thereby achieving the purpose of controlling the clutch of the first driven bevel gear 62 and the first active bevel gear 24, and facilitating the control of the opening and closing of the crushed material return mechanism 4.

[0057] Embodiment 8, on the basis of embodiment 7, as Figure 2 , Figure 5 and Figure 8 As shown, a discharge port 35 is provided at the bottom of the chute 34, a receiving groove 36 is provided at the top of the inner wall of the discharge port 35, a slide plate 65 is provided inside the receiving groove 36, a transmission member 38 is provided on one side of the slide plate 65, and the transmission member 38 is connected to the Z-shaped transmission member 54, and the process is as follows:

[0058] When the crushed material return mechanism stops running, large-particle asphalt fragments will continue to be transported into the chute 34. In order to prevent the accumulation of crushed materials in the chute 34, a discharge port 35 is arranged at an angle at the bottom of the chute 34, and the inclination direction is away from the direction of the discharge port 45, so as to prevent the large-particle fragments from mixing with the small-particle asphalt fragments below the discharge port. For the classification of asphalt fragments, people can choose the particle size of asphalt fragments according to the use requirements, which improves the applicability of the device. While pushing the Z-type transmission member 54 to control the separation of the first driven bevel gear 62 and the first active bevel gear 24, the Z-type transmission member 54 drives the slide plate 65 to enter the storage groove 36 through the transmission member 38, and the discharge port 35 will automatically open;

[0059] It is worth noting that when it is necessary to push the Z-shaped transmission member 54 to engage the first driven bevel gear 62 and the first active bevel gear 24, the transmission member 38 will drive the slide plate 65 to leave the receiving groove 36 to cover the bottom of the inclined groove 34, thereby enabling the crushed material return mechanism 4 to operate normally.

[0060] Working principle: When in use, people first shovel the asphalt waste on the ground into the crushing box 3, and start the motor 22. The output end of the motor 22 drives the second pulley 23 to rotate. When the second pulley 23 rotates, it drives the first pulley 14 to rotate through the belt. The first pulley 14 drives the two transmission gears 12 to rotate through the rotating shaft. The rotation of the two transmission gears 12 drives the first crushing roller 6 and the second crushing roller 7 to rotate and crush the asphalt waste, so as to achieve the purpose of preliminary crushing of the asphalt waste; when the first crushing roller 6 rotates, the rotating shaft at its end drives the first driving gear 19 inside the first driving cavity 18 to rotate, and the rotation of the first driving gear 19 drives the first driven gear 20 to rotate. Because the ends of the first driving gear 19 and the first driven gear 20 The rotating shafts are connected to the ends of the two crushing rollers of the first crushing roller group 9 respectively, so the first crushing roller group 9 is driven to operate and perform secondary crushing of the crushed materials transported by the crushed material return mechanism; when the second crushing roller 7 rotates, the rotating shaft at its end drives the second driving gear 16 inside the second driving chamber 15 to rotate, and the rotation of the second driving gear 16 drives the second driven gear 17 to rotate. Since the ends of the second driving gear 16 and the second driven gear 17 are connected to the ends of the two crushing rollers of the second crushing roller group 11 respectively through the rotating shafts, the second crushing roller group 11 is driven to operate and perform secondary crushing of the crushed materials transported by the crushed material return mechanism; the crushing protrusions on the first crushing roller group 9 and the second crushing roller group 11 are smaller than the crushing protrusions on the first crushing roller 6 and the second crushing roller 7, The crushing effect of unqualified asphalt fragments is better. The setting of the first crushing roller group 9 and the second crushing roller group 11 fully utilizes the kinetic energy of the driving mechanism, which saves costs and also enables the unqualified fragments to be crushed in a targeted manner, thereby improving the practicality of the device. When the screening box 2 is used to screen the asphalt fragments, the vibrating body 52 is started, the vibrating body 52 generates vibration and transmits the vibration to the screen frame 48 through the connecting plate 51. The screen frame 48 generates vibration through the setting of the first spring 47 and the second spring 59, so that the asphalt fragments on the screen frame 48 are screened, and the asphalt fragments with large particles are finally transported to the inside of the chute 34 through the guide plate 49. When the asphalt fragments in the chute 34 need to be transported to the top of the crushing box 3, the driving mechanism drives The driving shaft 33 rotates, and the rotation of the driving shaft 33 drives the metal chain plate 40 to run. When the metal chain plate 40 runs, it drives the feed shell 41 to pass through the bottom of the chute 34. The feed shell 41 loads a part of the fragments at the bottom of the chute 34 into the inside. At the same time, the side of the feed shell 41 away from the metal chain plate 40 is close to the inner wall of the vertical shell after entering the vertical shell. When the feed shell 40 runs to the highest point of the metal chain plate 40 and enters the other side of the metal chain plate, the asphalt fragments naturally slide onto the guide block 42, and then are guided by the guide block 42 to the inside of the conveying shell 44, and finally are conveyed by the conveying shell 44 to the top of the crushing box 3, and enter the corresponding first return port 8 and second return port 10. At the same time, the setting of the triangular block 43 accelerates the speed at which the asphalt fragments enter the conveying shell 44.When the motor 22 drives the crushing box 3 to operate, the first active bevel gear 24 at its output end rotates synchronously. At this time, the first active bevel gear 24 drives the first driven bevel gear 62 meshing with it to rotate. The rotation of the first driven bevel gear 62 drives the first rotating shaft 63 to rotate. When the first rotating shaft 63 rotates, it drives the second rotating shaft 27 to rotate under the action of the spline shaft 29 and the spline groove 28. When the second rotating shaft 27 rotates, it drives the second driven bevel gear 32 to rotate through the second active bevel gear 30. The rotation of the second driven bevel gear 32 drives the third rotating shaft 64 to rotate. The rotation of the third rotating shaft 64 drives the transmission shaft 33 to rotate, thereby achieving The purpose of driving the crushed material return mechanism 4 to operate is achieved, and the purpose of driving the first crushing mechanism, the second crushing mechanism and the crushed material return mechanism 4 to operate is achieved through a motor 22, thereby improving the applicability of the asphalt waste recycling device; when there is no need to crush large-particle asphalt fragments and to collect large-particle asphalt fragments, it is necessary to stop the operation of the crushed material return mechanism and pull the positioning column 56 out of the positioning hole 55. At this time, the Z-type transmission member 54 is pushed to move and the first rotating shaft mounting seat 25 is driven to move. The movement of the first rotating shaft mounting seat 25 drives the first rotating shaft 63 to move. The movement of the first rotating shaft 63 drives the first driven bevel gear 62 away from the first active bevel gear The gear 24 makes the two lose the transmission relationship. The arrangement of the spline shaft 29 and the spline groove 28 allows the first rotating shaft 63 to approach or move away from the second rotating shaft 27, so as to achieve the purpose of controlling the clutch of the first driven bevel gear 62 and the first active bevel gear 24, and to facilitate the control of the opening and closing of the crushed material return mechanism 4. When the crushed material return mechanism stops running, large-particle asphalt fragments will continue to be transported into the chute 34. In order to prevent the accumulation of crushed materials in the chute 34, a discharge port 35 is arranged at an angle at the bottom of the chute 34, and the inclination direction is away from the direction of the drop port 45, so as to prevent the large-particle fragments from mixing with the small-particle asphalt fragments below the drop port. The classification of the fragments allows people to select the particle size of the asphalt fragments according to the use requirements, which improves the applicability of the device. While pushing the Z-type transmission member 54 to control the separation of the first driven bevel gear 62 and the first active bevel gear 24, the Z-type transmission member 54 drives the slide plate 65 to enter the storage groove 36 through the transmission member 38, and the discharge port 35 will automatically open at this time; it is worth noting that when it is necessary to push the Z-type transmission member 54 to make the first driven bevel gear 62 and the first active bevel gear 24 mesh, the transmission member 38 will drive the slide plate 65 to leave the storage groove 36 to cover the bottom of the inclined groove 34, so that the fragment return mechanism 4 can operate normally. ;

[0061] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0062] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A device for recycling waste asphalt from highway pavement, comprising: A table body (1) having a material drop opening (45) extending through the top, characterized in that a screening box (2) is provided on the top of the table body (1), and a crushing box (3) is provided on the top of the screening box (2); The top of the crushing box (3) is provided with a feed inlet (5) extending through it, and the top of the crushing box (3) is provided with a first return inlet (8) and a second return inlet (10) symmetrically and alternately along its length direction, a first crushing mechanism is arranged inside the feed inlet (5), and a first crushing roller group (9) and a second crushing roller group (11) which are rotatably arranged inside the first return inlet (8) and the second return inlet (10) and which are linked to the first crushing mechanism; The screening box (2) is symmetrically provided with inclined grooves (34) on both sides, and a crushed material return mechanism (4) cooperating with a first crushing mechanism and a second crushing mechanism is provided inside the inclined groove (34); A driving mechanism for driving the first crushing mechanism, the second crushing mechanism and the crushed material return mechanism (4) is arranged inside the table body (1).

2. The device for recycling waste asphalt of highway pavement according to claim 1, characterized in that: The first pulverizing mechanism comprises a first pulverizing roller (6) and a second pulverizing roller (7) which are rotatably arranged inside the feeding port (5); one end of the rotating shaft of the first pulverizing roller (6) and the second pulverizing roller (7) penetrates the outside of the pulverizing box (3) and is provided with a transmission gear (12); and a first pulley (14) is also provided at the end of the rotating shaft of the first pulverizing roller (6); A first driving chamber (18) is provided between the first return port (8) and the feed port (5), and a first driving gear (19) and a first driven gear (20) are rotatably provided inside the first driving chamber (18), and the first driving gear (19) is connected to the end of the first crushing roller (6) via a rotating shaft. A second driving chamber (15) is provided between the second return port (10) and the feed port (5); a second driving gear (16) and a second driven gear (17) are rotatably provided inside the second driving chamber (15), the ends of which are connected to the second crushing roller group (11) via a rotating shaft; the second driving gear (16) is connected to the end of the second crushing roller (7) via a rotating shaft.

3. The device for recycling waste asphalt of highway pavement according to claim 1 is characterized in that: The screening box (2) comprises a lower L-shaped mounting plate (46) arranged in an "eight" shape at the front and rear of the inner wall of the screening box (2); a screening frame (48) is arranged on the top of the lower L-shaped mounting plate (46) via a plurality of first springs (47); a connecting plate (51) is arranged between the two screening frames (48); a vibrating body (52) is arranged at the bottom of the connecting plate (51); a material dividing plate (50) is arranged above the connecting plate (51); an upper L-shaped mounting plate (58) is symmetrically arranged above the screening frame (48); and the bottom of the upper L-shaped mounting plate (58) is connected to the top of the screening frame (48) via a second spring (59).

4. The device for recycling waste asphalt of highway pavement according to claim 3 is characterized in that: Both sides of the screening box (2) are provided with openings, and a material guide plate (49) is provided at the discharge end of the screening frame (48), and the material guide plate (49) passes through the opening and extends to the top of the chute (34).

5. The device for recycling waste asphalt of highway pavement according to claim 1 is characterized in that: The crushed material return mechanism (4) is a vertical shell arranged inside the chute (34), a conveying shell (44) is arranged on one side of the vertical shell, the bottom of the vertical shell has an opening, a metal chain plate (40) is arranged inside the vertical shell through a transmission shaft (33), a plurality of material conveying shells (41) are evenly arranged outside the metal chain plate (40), a material guide block (42) is arranged on the back of the material conveying shell (41), and a triangular block (43) mounted on the metal chain plate (40) is arranged between the material guide block (42) and another material conveying shell (41).

6. The device for recycling waste asphalt of highway pavement according to claim 1, characterized in that: The driving mechanism comprises a motor (22) arranged inside the table body (1); a second belt pulley (23) and a first active bevel gear (24) are arranged in sequence at the output end of the motor (22); the second belt pulley (23) is connected to the first belt pulley (14) through a belt (21) to drive the crushing box (3) to operate.

7. The device for recycling waste asphalt of highway pavement according to claim 6, characterized in that: A first rotating shaft mounting seat (25) is symmetrically and slidably provided on both sides of the first active bevel gear (24); a first rotating shaft (63) is rotatably provided on the inner wall of the first rotating shaft mounting seat (25); a first driven bevel gear (62) is provided at one end of the first rotating shaft (63); a spline shaft (29) is provided at the other end of the first rotating shaft (63); a second rotating shaft (27) having a spline groove (28) at one end is provided on one side of the spline shaft (29) through a second rotating shaft mounting seat (26); the second rotating shaft mounting seat (26) is fixedly provided inside the table body (1); and a second active bevel gear (30) is provided at the other end of the second rotating shaft (27); A third rotating shaft (64) connected to the transmission shaft (33) is rotatably arranged inside the table body (1), and one end of the third rotating shaft (64) is provided with a second driven bevel gear (32).

8. The device for recycling waste asphalt of highway pavement according to claim 7, characterized in that: The second rotating shaft mounting seat (26) is provided with a moving component for controlling the movement thereof.

9. The device for recycling waste asphalt of highway pavement according to claim 8, characterized in that: The moving assembly comprises a clearance opening (53) and a Z-shaped transmission member (54), wherein the clearance opening (53) is symmetrically arranged on the front surface of the table body (1), one end of the Z-shaped transmission member (54) is connected to the second rotating shaft mounting seat (26), a locking column (56) is passed through the Z-shaped transmission member (54), and a locking hole (55) matching with the locking column (56) is symmetrically arranged on the front surface of the table body (1).

10. The device for recycling waste asphalt from road pavement according to claim 1, characterized in that: A discharge port (35) is provided through the bottom of the inclined groove (34), a receiving groove (36) is provided at the top of the inner wall of the discharge port (35), a slide plate (65) is provided inside the receiving groove (36), a transmission member (38) is provided on one side of the slide plate (65), and the transmission member (38) is connected to the Z-shaped transmission member (54).

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