A device for removing aging layer of asphalt pavement

Abstract

The present application relates to a device for removing an aged layer of an asphalt pavement, and belongs to the technical field of removal devices. The device for removing an aged layer of an asphalt pavement comprises a milling machine, a mobile vehicle is fixedly provided on one side of the milling machine, a notch is penetrated through the surface of the mobile vehicle, a conveyor belt is obliquely provided in the notch, the conveyor belt penetrates the notch and extends to the outside, a support plate is fixedly provided between the top of the conveyor belt and the upper surface of the mobile vehicle, a first rotating motor for driving the conveyor belt to rotate is installed on the side wall of the mobile vehicle, a scraper is provided at the bottom of the conveyor belt, and a screening device is provided on the side of the conveyor belt away from the milling machine. The present application has the effect of improving work efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of removal devices, and in particular to a device for removing an aged layer of an asphalt pavement. Background Art

[0002] Asphalt pavement will age and deteriorate after long-term exposure to the sun and wheel rolling. Once the asphalt material ages and deteriorates, its performance is difficult to restore.

[0003] After the asphalt pavement ages, it needs to be repaired. Currently, most people use milling machines to remove the waste asphalt first, and then repair the pavement. The removed waste asphalt can be screened, re-proportioned and reused.

[0004] Regarding the above-mentioned related technologies, the inventor believes that the milling machine directly mixes the waste asphalt together after stripping it. However, the waste asphalt needs to be screened when it is recycled. The staff transports the waste asphalt to the sorting station for screening, which consumes a lot of time and has the defect of low work efficiency. Summary of the invention

[0005] In order to improve work efficiency, the present application provides a device for removing an aged layer of an asphalt pavement.

[0006] The present application provides a device for removing the aged layer of asphalt pavement, which adopts the following technical solution:

[0007] A device for removing an aged layer of an asphalt pavement comprises a milling machine, a mobile vehicle is fixedly provided on one side of the milling machine, a notch is penetrated through the surface of the mobile vehicle, a conveyor belt is obliquely arranged in the notch, the conveyor belt penetrates through the notch and extends to the outside, a support plate is fixedly provided between the top of the conveyor belt and the upper surface of the mobile vehicle, a first rotating motor for driving the conveyor belt to rotate is installed on the side wall of the mobile vehicle, a scraper is provided at the bottom of the conveyor belt, and a screening device is provided on the side of the conveyor belt away from the milling machine.

[0008] By adopting the above technical solution, the scraper scoops up the waste asphalt, and the first rotating motor starts the conveyor belt to transport the waste asphalt to the screening device for screening. Through the above structure, after the milling machine removes the waste asphalt, the waste asphalt is screened during the collection process, and there is no need to screen the waste asphalt during the regeneration of the waste asphalt, thereby achieving the effect of improving work efficiency.

[0009] Optionally, the screening device includes a screening box and a screening net, the screening box is arranged above the mobile vehicle, a cavity is defined in the screening box, the cavity passes through the top wall of the screening box, the screening net is arranged obliquely in the cavity, and the screening net is fixedly connected to the inner wall of the screening box, a first discharge port is defined through the inner wall of the screening box near the bottom of the screening net, a second discharge port is defined through the bottom of the inner wall of the screening box on the side opposite to the first discharge port, a material guide plate is horizontally arranged below the screening net, the material guide plate is rotatably connected to the inner wall of the screening box, a rotating shaft is fixedly arranged on the side wall of the material guide plate facing away from the screening net, an end of the rotating shaft away from the material guide plate is rotatably connected to the screening box, and a driving device for driving the rotating shaft to rotate is arranged between the material guide plate and the screening box.

[0010] By adopting the above technical solution, after the waste asphalt enters the cavity, the screening net screens the waste asphalt, and the waste asphalt larger than the aperture of the screening net remains on the surface of the screening net, and then slides out from the first discharge port along the inclination direction of the screening net; the waste asphalt smaller than the aperture of the screening net passes through the screening net, and then falls to the surface of the guide plate, and the driving device rotates the guide plate through the rotating shaft, and the rotation of the guide plate causes the waste asphalt on its surface to slide out from the second discharge port through the centrifugal force. Through the above structure, the effect of screening the waste asphalt and respectively exporting it from the screening box is achieved.

[0011] Optionally, the driving device includes a first bevel gear, a second bevel gear and a second rotating motor, the second rotating motor is installed on the side of the guide plate away from the screening net, the first bevel gear is fixedly connected to the output shaft of the second rotating motor, the second bevel gear is fixed on the circumferential side wall of the rotating shaft, and the second bevel gear is meshed with the first bevel gear.

[0012] By adopting the above technical solution, the second rotating motor rotates the first bevel gear, the first bevel gear rotates the second bevel gear, the second bevel gear rotates the shaft, and the shaft rotates the guide plate. Through the above structure, the effect of the driving device driving the guide plate to rotate is achieved.

[0013] Optionally, a material guide block is fixedly provided on the surface of the material guide plate facing the screening net, and the material guide block is configured to be conical.

[0014] By adopting the above technical solution, the waste asphalt dropped on the surface of the guide block slides along the guide block to the edge of the guide plate, thereby making it difficult for the waste asphalt to fall on the center of the guide plate, thereby achieving the effect of making the waste asphalt easily slide out from the second discharge port.

[0015] Two rollers are arranged below the moving vehicle along the length direction of the moving vehicle. The two rollers are respectively located on both sides of the moving vehicle. One end of the rollers is rotatably connected to the side wall of the moving vehicle. Scrapers are fixed on the circumferential side walls of the rollers. A linkage device is arranged between the support rod and the first rotating motor.

[0016] By adopting the above technical solution, the first rotating motor drives the two rollers to rotate simultaneously through the linkage device, the rollers rotate the scraper, and the scraper pushes the waste asphalt on both sides inward, thereby collecting the waste asphalt, thereby achieving the effect of making it easier for the shovel to shovel up the waste asphalt.

[0017] Optionally, the linkage device includes a first gear, a second gear, a transmission shaft, a third bevel gear, and a fourth bevel gear. The second gear is fixed on the circumferential side wall of the output shaft of the first rotating motor, the first gear is meshed with the second gear, one end of the transmission shaft is fixedly connected to the first gear, a support frame is fixed between the transmission shaft and the bottom wall of the moving vehicle, two third bevel gears are provided, and the third bevel gears are respectively fixed at both ends of the transmission shaft, two fourth bevel gears are provided, the fourth bevel gear corresponds to the third bevel gear one by one and the two are meshed and connected, the fourth bevel gear is provided on the side of the third bevel gear facing the scraper, and the two fourth bevel gears are respectively provided on the side of the two third bevel gears facing away from each other.

[0018] By adopting the above technical solution, the first rotating motor rotates the second gear, the second gear rotates the first gear, the first gear rotates the transmission shaft, the transmission shaft rotates the third bevel gear, the third bevel gear rotates the fourth bevel gear, and the two fourth bevel gears rotate in opposite directions, so that the fourth bevel gear rotates the roller in opposite directions, and the two rollers rotate the scrapers on their own circumferential side walls respectively. Through the above structure, the linkage device drives the scrapers to collect the waste asphalt on both sides.

[0019] Optionally, baffles are fixedly provided on both sides of the scraper.

[0020] By adopting the above technical solution, when the scraper is shoveling up the waste asphalt, the baffle makes it difficult for the waste asphalt to overflow from both sides of the scraper, thereby achieving the effect of the baffle on blocking the waste asphalt.

[0021] Optionally, a collecting plate is fixedly provided at one end of the two baffles close to the old plate.

[0022] By adopting the above technical solution, the mobile vehicle moves the collecting plate through the baffle. During the movement of the collecting plate, the waste asphalt on both sides is moved toward the middle along the surface of the collecting plate, thereby achieving the effect of collecting the waste asphalt cleanly.

[0023] Optionally, the side walls on the opposite sides of the two collecting plates are each provided with a groove, a plurality of rollers are vertically arranged in the groove, and both ends of the rollers are rotatably connected to the inner wall of the collecting plate at the groove.

[0024] By adopting the above technical solution, the roller reduces the friction between the waste asphalt and the collecting plate, thereby achieving the effect of smooth movement of the collecting plate.

[0025] Optionally, guard plates are fixedly provided on both sides of the conveyor belt, and the top of the scraper is located between the guard plates and the two are fixedly connected.

[0026] By adopting the above technical solution, the guard plate prevents the waste asphalt on the belt surface from sliding to the outside during transportation, thereby achieving the effect of the guard plate blocking the waste asphalt on the belt surface.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. After the milling machine removes the waste asphalt, it is transported to the screening box through a conveyor belt for screening. Then the staff transports the screened waste asphalt separately. There is no need to screen the waste asphalt during recycling, which improves work efficiency.

[0029] 2. The screening net screens the waste asphalt, and the waste asphalt remaining on the surface of the screening net slides out from the first discharge port along the screening net; the waste asphalt passing through the screening net falls to the guide plate, and the guide plate rotates to make the waste asphalt slide out from the second discharge port through centrifugal force. Through the above structure, the effect of screening the waste asphalt and exporting it to the screening box is achieved;

[0030] 3. The first rotating motor drives the transmission shaft to rotate through the second gear, and the transmission shaft drives the fourth bevel gear to drive the roller to rotate through the third bevel gear, and the roller drives the scraper to rotate. Through the above structure, the linkage device drives the scraper to collect the waste asphalt on both sides. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of an aged layer removal device for asphalt pavement according to an embodiment of the present application;

[0032] Figure 2 is a partial cross-sectional view of an embodiment of the present application to embody the connection method between the rotating roller and the first rotating motor;

[0033] Figure 3 It is a partial schematic diagram of the embodiment of the present application to embody the scraper, the baffle and the collecting plate;

[0034] Figure 4 It is a partial schematic diagram of a screening device in an embodiment of the present application;

[0035] Figure 5 This is a cross-sectional view of the internal structure of the screening box according to an embodiment of the present application.

[0036] In the figure, 1, milling machine; 2, mobile car; 21, gap; 22, conveyor belt; 221, scraper; 222, guard plate; 23, support plate; 24, first rotating motor; 25, support frame; 26, support table; 3, screening device; 31, screening box; 311, cavity; 312, first discharge port; 313, second discharge port; 314, first guide plate; 315, second guide plate; 32, screening net; 4, guide plate; 41, rotating shaft; 42, guide block; 5, driving device; 51, first bevel gear; 52, second bevel gear; 53, second rotating motor; 6, roller; 61, scraper; 7, linkage device; 71, first gear; 72, second gear; 73, transmission shaft; 74, third bevel gear; 75, fourth bevel gear; 8, baffle; 81, collecting plate; 811, groove; 812, roller; 9, support rod. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-5 This application is described in further detail.

[0038] The embodiment of the present application discloses a device for removing an aged layer of an asphalt pavement.

[0039] refer to Figure 1 A device for removing the aged layer of asphalt pavement comprises a milling machine 1, a mobile vehicle 2 is fixedly provided on one side of the milling machine 1, a screening device 3 is provided on the end of the mobile vehicle 2 away from the milling machine 1, and a conveyor belt 22 is provided between the screening device 3 and the milling machine 1 along the direction of the milling machine 1 toward the screening device 3. The milling machine 1 removes the aged layer of the pavement, and after the removal is completed, the conveyor belt 22 transports the waste asphalt to the screening device 3 for screening.

[0040] refer to Figure 2 Two rollers 6 are arranged under the moving vehicle 2. The two rollers 6 are respectively located on both sides of the moving vehicle 2. One end of the roller 6 is rotatably connected to the side wall of the moving vehicle 2. A scraper 61 is fixedly arranged on the circumferential side wall of the roller 6. A plurality of scrapers 61 are arranged, and the scrapers 61 are evenly spaced around the central axis of the roller 6.

[0041] refer to Figure 2A first rotating motor 24 for driving the conveyor belt 22 to rotate is installed on the side wall of the mobile vehicle 2. A linkage device 7 for driving the roller 6 to rotate is arranged between the first rotating motor 24 and the roller 6. The linkage device 7 includes a first gear 71, a second gear 72, a transmission shaft 73, a third bevel gear 74 and a fourth bevel gear 75. The second gear 72 is fixed on the circumferential side wall of the output shaft of the first rotating motor 24. The first gear 71 is meshed with the second gear 72. One end of the transmission shaft 73 is fixedly connected to the first gear 71. Two support frames 25 are fixed on the bottom wall of the mobile vehicle 2. , two support frames 25 are relatively arranged on both sides of the mobile vehicle 2, the transmission shaft 73 passes through the support frames 25 and the two are rotatably connected, two third bevel gears 74 are provided, the two third bevel gears 74 are respectively sleeved on both ends of the transmission shaft 73 and the two are fixedly connected, two fourth bevel gears 75 are provided, the fourth bevel gear 75 corresponds to the third bevel gear 74 one by one and the two are meshed and connected, one end of the rotating roller 6 close to the first rotating motor 24 is fixedly connected to the fourth bevel gear 75, and the two fourth bevel gears 75 are respectively arranged on the side of the two third bevel gears 74 facing away from each other.

[0042] The first rotating motor 24 starts to drive the second gear 72 to rotate, the second gear 72 drives the first gear 71 to rotate, the first gear 71 drives the transmission shaft 73 to rotate, the transmission shaft 73 drives the third bevel gear 74 to rotate, the third bevel gear 74 drives the fourth bevel gear 75 to rotate, the fourth bevel gear 75 drives the roller 6 to rotate, the roller 6 drives the scraper 61 to rotate, and the scraper 61 collects the waste asphalt.

[0043] refer to Figure 1 and Figure 3 Guard plates 222 are fixedly provided on both sides of the conveyor belt 22, a scraper 221 is fixedly provided between the two guard plates 222, the scraper 221 is located at the bottom of the guard plates 222, baffle plates 8 are fixedly provided on both sides of the scraper 221, and a collecting plate 81 is fixedly provided on one end of the baffle plate 8 close to the scraper 61.

[0044] refer to Figure 3 The side walls of the two collecting plates 81 on the opposite sides are each provided with a groove 811, and a plurality of rollers 812 are arranged in the vertical direction in the groove 811. The rollers 812 are closely arranged in sequence in the horizontal direction, and both ends of the rollers 812 are rotatably connected to the side walls of the collecting plates 81 at the groove 811.

[0045] refer to Figure 1 A notch 21 is formed through the upper surface of the moving vehicle 2 , a conveyor belt 22 is obliquely arranged in the notch 21 , the conveyor belt 22 passes through the notch 21 and extends to the outside, and a support plate 23 is fixed between the top of the conveyor belt 22 and the upper surface of the moving vehicle 2 .

[0046] The milling machine 1 drives the collecting plate 81 to move through the mobile vehicle 2, and the collecting plate 81 makes the remaining waste asphalt move inward, so that the waste asphalt makes the roller 812 roll; the milling machine 1 continues to move so that the waste asphalt is between the two baffles 8, and the scraper 221 scoops up the waste asphalt, and the waste asphalt accumulates on the surface of the scraper 221; then the milling machine 1 continues to move so that the waste asphalt overflows to the belt surface, and the first rotating motor 24 is started to make the conveyor belt 22 transport the waste asphalt to the screening device 3.

[0047] refer to Figure 4 The screening device 3 includes a screening box 31 and a screening net 32. The screening box 31 is arranged at one end of the mobile vehicle 2 close to the second roller. A support platform 26 is fixedly arranged between the screening box 31 and the mobile vehicle 2. A cavity 311 is opened in the screening box 31. The cavity 311 passes through the top wall of the screening box 31. The screening net 32 ​​is tiltedly arranged in the cavity 311, and the screening net 32 ​​is fixedly connected to the screening box 31. A first discharge port 312 is penetrated through the side wall of the screening box 31 close to the bottom of the screening net 32, and the bottom of the screening net 32 ​​is not lower than the lower edge line of the first discharge port 312. A first guide plate 314 is fixedly arranged on the side wall of the screening box 31 at the first discharge port 312, and a support rod 9 is fixedly arranged between the first guide plate 314 and the mobile vehicle 2.

[0048] refer to Figure 4 and Figure 5 A second discharge port 313 is formed through the bottom of the side wall of the screening box 31 away from the first discharge port 312, and a guide plate 4 is arranged horizontally below the screening net 32, the upper surface of the guide plate 4 is not lower than the lower edge line of the second discharge port 313, and the guide plate 4 is rotatably connected to the inner wall of the screening box 31 at the cavity 311, and a guide block 42 is fixedly provided on the side wall of the guide plate 4 facing the screening net 32, the guide block 42 is conical, and the guide block 42 is located at the center of the guide plate 4, and a second guide plate 315 is fixedly provided on the side wall of the second discharge port 313 of the screening box 31, and a support rod 9 is also fixedly provided between the second guide plate 315 and the moving vehicle 2.

[0049] refer to Figure 5 A rotating shaft 41 is fixedly provided on the side wall of the guide plate 4 away from the screening net 32. The end of the rotating shaft 41 away from the guide plate 4 is rotatably connected to the screening box 31. A driving device 5 for driving the rotating shaft 41 to rotate is provided on the side of the guide plate 4 facing the rotating shaft 41.

[0050] After the belt transports the waste asphalt to the cavity 311, the waste asphalt falls onto the surface of the screening net 32. The waste asphalt remaining on the surface of the screening net 32 ​​slides out from the first discharge port 312 to the first guide plate 314 along the inclined direction of the screening net 32. The waste asphalt passing through the screening net 32 ​​falls onto the surface of the guide plate 4. The guide block 42 causes the waste asphalt to slide to the edge of the guide plate 4. The driving device 5 starts to drive the rotating shaft 41 to rotate. The rotating shaft 41 drives the guide plate 4 to rotate. The guide plate 4 causes the waste asphalt to slide out from the second discharge port 313 to the second guide plate 315 through the action of centrifugal force.

[0051] refer to Figure 5 The driving device 5 includes a first bevel gear 51, a second bevel gear 52 and a second rotating motor 53. The second rotating motor 53 is installed on the inner bottom wall of the screening box 31 facing the guide plate 4. The first bevel gear 51 is fixed on the circumferential side wall of the output shaft of the second rotating motor 53. The second bevel gear 52 is fixed on the circumferential side wall of the rotating shaft 41, and the first bevel gear 51 and the second bevel gear 52 are meshed and connected.

[0052] The second rotating motor 53 is started to drive the first bevel gear 51 to rotate, the first bevel gear 51 drives the second bevel gear 52 to rotate, and the second bevel gear 52 drives the rotating shaft 41 to rotate.

[0053] The implementation principle of the device for removing the aged layer of asphalt pavement in the embodiment of the present application is as follows: the first rotating motor 24 drives the first gear 71 to rotate the transmission shaft 73 through the second gear 72, and the transmission shaft 73 drives the fourth bevel gear 75 to rotate the roller 6 through the third bevel gear 74, so that the roller 6 drives the scraper 61 to collect the waste asphalt. The milling machine 1 moves to make the blade 221 scoop up the collected waste asphalt, and the milling machine 1 continues to move to make the waste asphalt overflow from the blade 221 to the surface of the conveyor belt 22, and the first rotating motor 24 transports the waste asphalt to the screening device 3 through the conveyor belt 22. The screening net 32 ​​screens the waste asphalt, and the waste asphalt remaining on the surface of the screening net 32 ​​slides out from the first discharge port 312 along the inclination direction of the screening net 32, and the waste asphalt passing through the screening net 32 ​​falls onto the surface of the guide plate 4; the second rotating motor 53 drives the second bevel gear 52 to rotate the rotating shaft 41 through the first bevel gear 51, and the rotating shaft 41 drives the guide plate 4 to rotate, and the guide plate 4 slides out of the second discharge port 313 through the centrifugal force. Through the above structure, the waste asphalt is screened during the collection process, thereby achieving the effect of improving work efficiency.

[0054] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A device for removing an aged layer of an asphalt pavement, comprising a milling machine (1), characterized in that: A moving vehicle (2) is fixedly provided on one side of the milling machine (1). A notch (21) is formed through the surface of the moving vehicle (2). A conveyor belt (22) is obliquely provided in the notch (21). The conveyor belt (22) passes through the notch (21) and extends to the outside. A support plate (23) is fixedly provided between the top of the conveyor belt (22) and the upper surface of the moving vehicle (2). A first rotating motor (24) for driving the conveyor belt (22) to rotate is installed on the side wall of the moving vehicle (2). A scraper (221) is provided at the bottom of the conveyor belt (22). The conveyor belt (22) is disposed on the side facing away from the milling machine (1). A screening device (3) is provided; the screening device (3) comprises a screening box (31) and a screening net (32); the screening box (31) is arranged above the mobile vehicle (2); a cavity (311) is provided in the screening box (31); the cavity (311) passes through the top wall of the screening box (31); the screening net (32) is obliquely provided in the cavity (311); the screening net (32) is fixedly connected to the inner wall of the screening box (31); a first discharge port (312) is provided through the inner wall of the screening box (31) near the bottom of the screening net (32); the screening box (31) is provided with a first discharge port (312); A second discharge port (313) is provided through the bottom of the inner wall on the side opposite to the discharge port (312); a guide plate (4) is horizontally arranged below the screening net (32); the guide plate (4) is rotatably connected to the inner wall of the screening box (31); a rotating shaft (41) is fixedly arranged on the side wall of the guide plate (4) away from the screening net (32); an end of the rotating shaft (41) away from the guide plate (4) is rotatably connected to the screening box (31); a driving device (5) for driving the rotating shaft (41) to rotate is arranged between the guide plate (4) and the screening box (31); the driving device (5) The invention comprises a first bevel gear (51), a second bevel gear (52) and a second rotating motor (53); the second rotating motor (53) is mounted on a side of a material guide plate (4) away from a screening net (32); the first bevel gear (51) is fixedly connected to an output shaft of the second rotating motor (53); the second bevel gear (52) is fixedly arranged on a circumferential side wall of a rotating shaft (41), and the second bevel gear (52) is meshed with the first bevel gear (51); a material guide block (42) is fixedly arranged on a surface of the material guide plate (4) facing the screening net (32); the material guide block (42) is arranged to be conical.

2. The device for removing the aged layer of asphalt pavement according to claim 1 is characterized in that: Two rollers (6) are arranged below the moving vehicle (2) along the length direction of the moving vehicle (2), the two rollers (6) are respectively located on both sides of the moving vehicle (2), one end of the rollers (6) is rotatably connected to the side wall of the moving vehicle (2), a scraper (61) is fixedly arranged on the circumferential side wall of the rollers (6), and a linkage device (7) is arranged between the support rod (9) and the first rotating motor (24).

3. The device for removing the aged layer of asphalt pavement according to claim 2 is characterized in that: The linkage device (7) comprises a first gear (71), a second gear (72), a transmission shaft (73), a third bevel gear (74), and a fourth bevel gear (75); the second gear (72) is fixedly arranged on the circumferential side wall of the output shaft of the first rotating motor (24); the first gear (71) is meshed with the second gear (72); one end of the transmission shaft (73) is fixedly connected to the first gear (71); a support frame (25) is fixedly arranged between the transmission shaft (73) and the bottom wall of the moving vehicle (2); the third bevel gear (74) is arranged There are two third bevel gears (74), and the third bevel gears (74) are respectively fixedly arranged at both ends of the transmission shaft (73). There are two fourth bevel gears (75), and the fourth bevel gears (75) correspond to the third bevel gears (74) one by one and are meshingly connected. The fourth bevel gear (75) is arranged on the side of the third bevel gear (74) facing the scraper (61), and the two fourth bevel gears (75) are respectively arranged on the sides of the two third bevel gears (74) facing away from each other, and the two fourth bevel gears (75) are respectively fixedly connected to the two rollers (6).

4. The device for removing the aged layer of asphalt pavement according to claim 2 is characterized in that: Baffles (8) are fixedly provided on both sides of the scraper (221).

5. The device for removing the aged layer of asphalt pavement according to claim 4 is characterized in that: A collecting plate (81) is fixedly provided at one end of the two baffles (8) close to the scraper (61).

6. The device for removing the aged layer of asphalt pavement according to claim 5 is characterized in that: The side walls of the two collecting plates (81) on the opposite side are each provided with a groove (811), a plurality of rollers (812) are vertically arranged in the groove (811), and both ends of the rollers (812) are rotatably connected to the inner wall of the collecting plate (81) at the groove (811).

7. The device for removing the aged layer of asphalt pavement according to claim 1 is characterized in that: Guard plates (222) are fixedly provided on both sides of the conveyor belt (22), and the top of the scraper (221) is located between the guard plates (222) and the two are fixedly connected.

Images