Sampling device for asphalt testing

Abstract

The utility model discloses a sampling device for asphalt detection, including a moving plate, a moving assembly is installed on the side of the moving plate, and the moving assembly includes a first mounting seat, a first screw rod, a second mounting seat, a first motor, a gear, a transmission belt, a screw block, a slider, a column and a moving wheel; a supporting assembly, the supporting assembly is installed on the side of the moving plate, and the supporting assembly includes a third mounting seat, a hydraulic cylinder, a guide rod, a supporting block and an anti-skid pad; a lifting assembly, the lifting assembly is installed above the moving plate, and the lifting assembly includes a fixed column, a first bearing, a screw sleeve, a first bevel gear, a second screw rod, a second bevel gear, a first rotating shaft, a cross plate, a second motor, a second rotating shaft, a third bevel gear, a fourth bevel gear and a connecting seat; the first fixed rod is fixedly connected above the moving plate. The sampling container inside the sampling bucket can be heated, and the asphalt after sampling can be prevented from drying out during the moving process, which is beneficial to the subsequent detection work.

Description

Technical Field

[0001] The utility model relates to the field of sampling devices, in particular to a sampling device for asphalt detection. Background Art

[0002] During the asphalt production process, workers are required to take samples to detect whether they meet the standards, so a sampling device is needed. Patent application number 2021213459800 discloses a hot material bin sampling device for an asphalt mixing station. Through the setting of the height adjustment component, the height of the sampling bucket can be automatically adjusted according to the height of the discharge port for sampling. There is no need for workers to climb for sampling, thereby reducing the labor intensity of the workers. Through the setting of the horizontal adjustment component, the position of the sampling bucket can be adjusted according to the discharge port so that the position of the sampling bucket is consistent with the position of the discharge port to prevent asphalt from falling and wasting due to different positions during sampling. An asphalt sampling container is also provided in the sampling bucket to prevent asphalt from sticking in the sampling bucket during sampling, thereby reducing redundant work of personnel, improving work efficiency, and greatly improving the practicality and convenience of the equipment.

[0003] However, the patented product was found to still have the following defects during actual use: since the sampling bucket has a simple structure and no heating component is provided, the asphalt after sampling is prone to drying out during the movement process, which is not conducive to subsequent detection work. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a sampling device for asphalt testing, which can heat the sampling container inside the sampling bucket to prevent the sampled asphalt from drying out during the movement, thereby facilitating subsequent testing work.

[0005] According to the technical solution provided in the embodiment of the present application, a sampling device for asphalt detection includes:

[0006] A movable plate, a movable assembly is installed on the side of the movable plate, and the movable assembly includes a first mounting seat, a first screw rod, a second mounting seat, a first motor, a gear, a transmission belt, a screw block, a slider, a column and a movable wheel; the first mounting seat is fixedly mounted on the side of the movable plate, the first screw rod is connected to the first mounting seat through a second bearing, the second mounting seat is fixedly mounted above the first mounting seat on the left side, the first motor is fixedly mounted above the second mounting seat, the first motor is connected to the first screw rod through a first coupling, the gear is fixedly mounted on the outside of the first screw rod, the transmission belt is meshed between the gears on the left and right sides, the screw block is screwed on the outside of the first screw rod, the slider is fixedly mounted on the side of the screw block, the end of the slider is in sliding contact with the first mounting seat, the side of the first mounting seat is provided with a sliding groove matching the slider, the column is fixedly mounted between the screw block and the movable wheel, and the side of the first mounting seat and the movable plate are both provided with a first opening corresponding to the column;

[0007] A support assembly, wherein the support assembly is mounted on the side of the movable plate, and the support assembly comprises a third mounting seat, a hydraulic cylinder, a guide rod, a support block and an anti-skid pad; the third mounting seat is fixedly mounted on the side of the movable plate, the hydraulic cylinder is mounted on the side of the third mounting seat by a first screw, the support block is connected to the lower end of the hydraulic cylinder by a connecting sleeve and a first screw, the guide rod is fixedly connected above the support block, the guide rod is in sliding contact with the third mounting seat, a sliding through hole corresponding to the guide rod is provided on the side of the third mounting seat, the anti-skid pad is bonded to the bottom of the support block, and a second opening corresponding to the support block is provided on the side of the movable plate;

[0008] A lifting component, wherein the lifting component is installed above the movable plate, and the lifting component comprises a fixed column, a first bearing, a screw sleeve, a first helical gear, a second screw, a second helical gear, a first rotating shaft, a cross plate, a second motor, a second rotating shaft, a third helical gear, a fourth helical gear and a connecting seat; the fixed column is fixedly installed above the movable plate, the first bearing is fixedly installed between the screw sleeve and the fixed column, the first helical gear is fixedly installed on the outside of the screw sleeve, the second screw is screwed with the screw sleeve, the second helical gear is meshed with the first helical gear, the second helical gear is fixedly installed on the outside of the first rotating shaft, the cross plate is fixedly connected between the fixed columns on the left and right sides, the second motor is fixedly installed below the cross plate, the second motor is connected to the second rotating shaft through a second coupling, the third helical gear is fixedly installed on the outside of the second rotating shaft, the third helical gear is meshed with the fourth helical gear, the fourth helical gear is fixedly installed on the outside of the first rotating shaft, the connecting seat is fixedly installed above the cross plate, the first rotating shaft is connected to the connecting seat through a third bearing, and the top of the second screw is fixedly connected to the lifting platform;

[0009] The first fixing rod is fixedly connected to the top of the movable plate, the outer wall of the second fixing rod is in sliding contact with the inner wall of the first fixing rod, and a lifting platform is fixedly installed on the top of the second fixing rod; there are two groups of movable components, the front movable component is located at the front side of the lifting component, and the rear movable component is located at the rear side of the first fixing rod, the third mounting seat is located between the fixing column and the first fixing rod, and the diameter of the first fixing rod is larger than the diameter of the second fixing rod;

[0010] A heating component, the heating component is installed above the lifting platform, the heating component includes a base, a protective cylinder, a fan, an electric heating pipe, an air outlet pipe and an air supply pipe; the base is installed above the lifting platform by a first countersunk screw, the protective cylinder is installed above the base by a second countersunk screw, the fan is installed above the base by a second screw, the side of the base is provided with an air inlet corresponding to the fan, a fixing plate is fixedly installed inside the protective cylinder, the electric heating pipe is installed below the fixing plate by a mounting ring and a second screw, the side of the fixing plate is provided with an air outlet, the air outlet pipe is fixedly connected to the side of the protective cylinder, and the side of the protective cylinder is provided with a first ventilation hole corresponding to the air outlet pipe;

[0011] A sampling hopper, wherein the sampling hopper is fixedly mounted above the protective tube, and an air inlet pipe is fixedly connected to the side of the sampling hopper; the air delivery pipe is fixedly connected between the air inlet pipe and the air outlet pipe, the sampling hopper is a top open structure, a second ventilation hole is provided at the bottom of the sampling hopper, and a third ventilation hole corresponding to the air inlet pipe is provided on the side of the sampling hopper;

[0012] A push-pull rod is fixedly mounted on the right side of the moving plate.

[0013] In summary, the beneficial effects of this application are:

[0014] 1. Through the setting of the heating component and the air inlet pipe, the sampling container inside the sampling bucket can be heated, which can prevent the asphalt after sampling from drying out during the movement process, thus facilitating subsequent detection work;

[0015] 2. By setting up the supporting components, the product is not easily displaced during the sampling process, thereby avoiding the waste caused by asphalt falling due to misalignment between the sampling bucket and the discharge port of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the top view of the connection between the gear and the transmission belt of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the connection between the heating component, the sampling hopper and the air inlet pipe of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the connection between the movable plate, the movable assembly and the supporting assembly of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the connection between the movable plate, lifting assembly and lifting platform of the utility model;

[0022] Figure 6 It is a structural schematic diagram of the connection between the movable plate, the first fixing rod, the second fixing rod and the lifting platform of the utility model.

[0023] Numbers in the figure: 1, moving plate; 2, moving assembly; 3, first mounting seat; 4, first screw rod; 5, second mounting seat; 6, first motor; 7, gear; 8, transmission belt; 9, screw block; 10, slider; 11, column; 12, moving wheel; 13, support assembly; 14, third mounting seat; 15, hydraulic cylinder; 16, guide rod; 17, support block; 18, anti-skid pad; 19, lifting assembly; 20, fixed column; 21, first bearing; 22, screw sleeve; 23, first bevel gear ; 24. Second screw rod; 25. Second bevel gear; 26. First rotating shaft; 27. Cross plate; 28. Second motor; 29. ​​Second rotating shaft; 30. Third bevel gear; 31. Fourth bevel gear; 32. Connecting seat; 33. First fixing rod; 34. Second fixing rod; 35. Lifting platform; 36. Heating assembly; 37. Base; 38. Protective tube; 39. Fan; 40. Electric heating tube; 41. Air outlet pipe; 42. Air supply pipe; 43. Sampling bucket; 44. Air inlet pipe; 45. Push-pull rod. DETAILED DESCRIPTION

[0024] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings.

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] Please refer to Figure 1-Figure 6A sampling device for asphalt detection comprises a moving plate 1, a moving assembly 2 is installed on the side of the moving plate 1, and the moving assembly 2 comprises a first mounting seat 3, a first screw 4, a second mounting seat 5, a first motor 6, a gear 7, a transmission belt 8, a screw block 9, a slider 10, a column 11 and a moving wheel 12; a supporting assembly 13, the supporting assembly 13 is installed on the side of the moving plate 1, and the supporting assembly 13 comprises a third mounting seat 14, a hydraulic cylinder 15, a guide rod 16, a supporting block 17 and an anti-slip pad 18; a lifting assembly 19, the lifting assembly 19 is installed above the moving plate 1, and the lifting assembly 19 comprises a fixing column 20, a first bearing 21, a screw sleeve 22, a first bevel gear 23, a second screw 24, a second bevel gear 25, a first rotating shaft 26, a cross plate 27, a second motor 28, a second rotating shaft 29, a third bevel gear 30, a fourth bevel gear 31, a first bevel gear 32, a first bevel gear 33, a first bevel gear 34, a second bevel gear 35, a first bevel gear 36, a second bevel gear 37, a first bevel gear 38, a first bevel gear 39, a first bevel gear 31, a first bevel gear 30, a first bevel gear 31, a first bevel gear 32, a first bevel gear 33, a first bevel gear 34, a second bevel gear 35, a first bevel gear 36, a second bevel gear 37, a first bevel gear 38, a first bevel gear 39, a first bevel gear 30, a first bevel gear 31, a first bevel gear 32, a first bevel gear 33, a first bevel gear 3 Gear 31 and connecting seat 32; the first fixed rod 33 is fixedly connected to the top of the movable plate 1, the outer wall of the second fixed rod 34 is in sliding contact with the inner wall of the first fixed rod 33, and the top of the second fixed rod 34 is fixedly installed with a lifting platform 35; the heating component 36, the heating component 36 is installed above the lifting platform 35, the heating component 36 includes a base 37, a protective tube 38, a fan 39, an electric heating pipe 40, an air outlet pipe 41 and an air supply pipe 42; the sampling bucket 43, the sampling bucket 43 is fixedly installed above the protective tube 38, and the side of the sampling bucket 43 is fixedly connected with the air inlet pipe 44; the push-pull rod 45, the push-pull rod 45 is fixedly installed on the right side of the movable plate 1, and a controller is fixedly installed above the push-pull rod 45, the first motor 6, the hydraulic cylinder 15, the second motor 28, the fan 39, the electric heating pipe 40 are electrically connected to the controller, which facilitates control.

[0027] like Figure 1 , Figure 2 and Figure 4As shown, the first mounting seat 3 is fixedly mounted on the side of the movable plate 1, the first screw 4 is connected to the first mounting seat 3 through the second bearing, the second mounting seat 5 is fixedly mounted above the first mounting seat 3 on the left, the first motor 6 is fixedly mounted above the second mounting seat 5, the first motor 6 is connected to the first screw 4 through the first coupling, the gear 7 is fixedly mounted on the outer side of the first screw 4, the transmission belt 8 is engaged between the left and right gears 7, the screw block 9 is screwed on the outer side of the first screw 4, the slider 10 is fixedly mounted on the side of the screw block 9, the end of the slider 10 is in sliding contact with the first mounting seat 3, the side of the first mounting seat 3 is provided with a sliding groove matching the slider 10, which facilitates the sliding of the slider 10, the column 11 is fixedly mounted between the screw block 9 and the movable wheel 12, and the sides of the first mounting seat 3 and the movable plate 1 are provided with first openings corresponding to the column 11, which facilitates the passage of the column 11. The third mounting seat 14 is fixedly mounted on the side of the movable plate 1, the hydraulic cylinder 15 is mounted on the side of the third mounting seat 14 by a first screw, the support block 17 is connected to the lower end of the hydraulic cylinder 15 by a connecting sleeve and a first screw, the guide rod 16 is fixedly connected above the support block 17, the guide rod 16 is in sliding contact with the third mounting seat 14, a sliding through hole corresponding to the guide rod 16 is provided on the side of the third mounting seat 14, an anti-slip pad 18 is bonded to the bottom of the support block 17, and a second opening corresponding to the support block 17 is provided on the side of the movable plate 1, which facilitates the passage of the support block 17.

[0028] like Figure 1 , Figure 4-Figure 6 As shown, the fixed column 20 is fixedly installed above the movable plate 1, the first bearing 21 is fixedly installed between the screw sleeve 22 and the fixed column 20, the first bevel gear 23 is fixedly installed on the outer side of the screw sleeve 22, the second screw 24 is screwed with the screw sleeve 22, the second bevel gear 25 is meshed with the first bevel gear 23, the second bevel gear 25 is fixedly installed on the outer side of the first rotating shaft 26, the cross plate 27 is fixedly connected between the fixed columns 20 on the left and right sides, the second motor 28 is fixedly installed below the cross plate 27, the second motor 28 is connected to the second rotating shaft 29 through the second coupling, the third bevel gear 30 is fixedly installed on the outer side of the second rotating shaft 29, the third bevel gear 30 is meshed with the fourth bevel gear 31, the fourth bevel gear 31 is fixedly installed on the outer side of the first rotating shaft 26, the connecting seat 32 is fixedly installed above the cross plate 27, the first rotating shaft 26 is connected to the connecting seat 32 through the third bearing, and the top of the second screw 24 is fixedly connected to the lifting platform 35. There are two groups of moving components 2, the front moving component 2 is located in front of the lifting component 19, and the rear moving component 2 is located behind the first fixed rod 33. The third mounting seat 14 is located between the fixed column 20 and the first fixed rod 33, and the diameter of the first fixed rod 33 is greater than the diameter of the second fixed rod 34.

[0029] like Figure 1 , Figure 3 , Figure 5and Figure 6 As shown, the base 37 is installed above the lifting platform 35 by a first countersunk screw, the top and bottom of the protective cylinder 38 are both open structures, the protective cylinder 38 is installed above the base 37 by a second countersunk screw, the fan 39 is installed above the base 37 by the second screw, the side of the base 37 is provided with an air inlet corresponding to the fan 39, the inside of the protective cylinder 38 is fixedly installed with a fixing plate, which facilitates the installation of the electric heating tube 40, the electric heating tube 40 is installed below the fixing plate by a mounting ring and a second screw, the side of the fixing plate is provided with an air outlet, the air outlet pipe 41 is fixedly connected to the side of the protective cylinder 38, the side of the protective cylinder 38 is provided with a first ventilation hole corresponding to the air outlet pipe 41, the air supply pipe 42 is fixedly connected between the air inlet pipe 44 and the air outlet pipe 41, the top and bottom of the air supply pipe 42 are both closed structures, and the side of the air supply pipe 42 is provided with a flow hole corresponding to the air inlet pipe 44 and the air outlet pipe 41. The sampling hopper 43 is an open-top structure. A second ventilation hole is provided at the bottom of the sampling hopper 43 , and a third ventilation hole corresponding to the air inlet pipe 44 is provided on the side of the sampling hopper 43 .

[0030] During use: first place the sampling container inside the sampling bucket 43, then start the fan 39 of the heating component 36, the wind blown by the fan 39 will be heated by the electric heating tube 40, and then a part of the hot air will enter the interior of the sampling bucket 43 through the second ventilation hole, and the other part of the hot air will enter the interior of the sampling bucket 43 through the air outlet pipe 41, the air supply pipe 42, the air inlet pipe 44 and the third ventilation hole in turn, heating the internal sampling container, which can prevent the asphalt after sampling from drying out during the movement, thereby facilitating subsequent detection work, and then push the push-pull rod 45 to move the product to the bottom of the silo discharge port, and then start the second motor 28 of the lifting component 19, the second motor 28 will drive the second rotating shaft 29 and the third bevel gear 30 to rotate, the third bevel gear 30 will drive the fourth bevel gear 31, the first rotating shaft 26 and the second bevel gear 25 to rotate, and the second bevel gear 25 will drive the first The bevel gear 23 and the screw sleeve 22 rotate, and the screw sleeve 22 will drive the second screw rod 24, the lifting platform 35, the second fixed rod 34 and the sampling bucket 43 to move upward, so that the sampling bucket 43 is located below the discharge port, and then the push-pull rod 45 is pushed and pulled to align the sampling bucket 43 below the discharge port, and then the hydraulic cylinder 15 of the support assembly 13 is started, and the hydraulic cylinder 15 will drive the support block 17 to move downward, so that the anti-slip pad 18 abuts against the ground, and then the first motor 6 of the moving assembly 2 is started. The first motor 6 can drive the gear 7, the transmission belt 8 and the first screw rod 4 to rotate, and the first screw rod 4 can drive the screw block 9, the slider 10, the column 11 and the moving wheel 12 to move upward. At this time, the support assembly 13 can support this product, so that during the sampling process, this product is not easy to be displaced, thereby avoiding the waste caused by the asphalt falling due to the misalignment between the sampling bucket 43 and the discharge port of this product.

[0031] The above description is only an explanation of the preferred embodiments of the present application and the technical principles and other schemes used. At the same time, the scope of the utility model involved in the present application is not limited to the technical scheme formed by a specific combination of the above technical features, but also includes other technical schemes formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) to form a technical scheme.

Claims

1. A sampling device for asphalt detection, characterized by: The invention comprises a moving plate (1), a moving assembly (2) is installed on the side of the moving plate (1), and the moving assembly (2) comprises a first mounting seat (3), a first screw rod (4), a second mounting seat (5), a first motor (6), a gear (7), a transmission belt (8), a screw block (9), a slider (10), a column (11) and a moving wheel (12); A support assembly (13), the support assembly (13) being mounted on a side surface of the movable plate (1), the support assembly (13) comprising a third mounting seat (14), a hydraulic cylinder (15), a guide rod (16), a support block (17) and an anti-slip pad (18); A lifting assembly (19), wherein the lifting assembly (19) is installed above the movable plate (1), and the lifting assembly (19) comprises a fixing column (20), a first bearing (21), a screw sleeve (22), a first bevel gear (23), a second screw rod (24), a second bevel gear (25), a first rotating shaft (26), a transverse plate (27), a second motor (28), a second rotating shaft (29), a third bevel gear (30), a fourth bevel gear (31) and a connecting seat (32); The first fixing rod (33) is fixedly connected above the movable plate (1), the outer wall of the second fixing rod (34) is in sliding contact with the inner wall of the first fixing rod (33), and the top end of the second fixing rod (34) is fixedly mounted with a lifting platform (35); A heating component (36), wherein the heating component (36) is installed above the lifting platform (35), and the heating component (36) comprises a base (37), a protective tube (38), a fan (39), an electric heating pipe (40), an air outlet pipe (41) and an air supply pipe (42); A sampling hopper (43), wherein the sampling hopper (43) is fixedly mounted above the protective tube (38), and an air inlet pipe (44) is fixedly connected to a side of the sampling hopper (43); A push-pull rod (45), wherein the push-pull rod (45) is fixedly mounted on the right side of the movable plate (1).

2. The sampling device for asphalt detection according to claim 1 is characterized in that: The first mounting seat (3) is fixedly mounted on the side of the movable plate (1); the first screw rod (4) is connected to the first mounting seat (3) via a second bearing; the second mounting seat (5) is fixedly mounted above the first mounting seat (3) on the left side; the first motor (6) is fixedly mounted above the second mounting seat (5); the first motor (6) is connected to the first screw rod (4) via a first coupling; the gear (7) is fixedly mounted on the outside of the first screw rod (4); and the transmission belt (8) is meshed with the gears ( 7), the screw block (9) is screwed on the outer side of the first screw rod (4), the slider (10) is fixedly mounted on the side of the screw block (9), the end of the slider (10) is in sliding contact with the first mounting seat (3), the side of the first mounting seat (3) is provided with a sliding groove matching the slider (10), the column (11) is fixedly mounted between the screw block (9) and the moving wheel (12), and the sides of the first mounting seat (3) and the moving plate (1) are both provided with a first opening corresponding to the column (11).

3. The sampling device for asphalt detection according to claim 1 is characterized in that: The third mounting seat (14) is fixedly mounted on the side of the movable plate (1), the hydraulic cylinder (15) is mounted on the side of the third mounting seat (14) by a first screw, the support block (17) is connected to the lower end of the hydraulic cylinder (15) by a connecting sleeve and a first screw, the guide rod (16) is fixedly connected above the support block (17), the guide rod (16) is in sliding contact with the third mounting seat (14), a sliding through hole corresponding to the guide rod (16) is provided on the side of the third mounting seat (14), the anti-slip pad (18) is bonded to the bottom of the support block (17), and a second opening corresponding to the support block (17) is provided on the side of the movable plate (1).

4. The sampling device for asphalt detection according to claim 1 is characterized in that: The fixed column (20) is fixedly mounted above the movable plate (1); the first bearing (21) is fixedly mounted between the screw sleeve (22) and the fixed column (20); the first bevel gear (23) is fixedly mounted on the outer side of the screw sleeve (22); the second screw rod (24) is screwed to the screw sleeve (22); the second bevel gear (25) is meshed with the first bevel gear (23); the second bevel gear (25) is fixedly mounted on the outer side of the first rotating shaft (26); the transverse plate (27) is fixedly connected between the fixed columns (20) on the left and right sides; the second motor (28) is fixedly mounted on the outer side of the first rotating shaft (26); Below the transverse plate (27), the second motor (28) is connected to the second rotating shaft (29) through a second coupling, the third bevel gear (30) is fixedly mounted on the outer side of the second rotating shaft (29), the third bevel gear (30) is meshed with the fourth bevel gear (31), the fourth bevel gear (31) is fixedly mounted on the outer side of the first rotating shaft (26), the connecting seat (32) is fixedly mounted above the transverse plate (27), the first rotating shaft (26) is connected to the connecting seat (32) through a third bearing, and the top end of the second screw rod (24) is fixedly connected to the lifting platform (35).

5. The sampling device for asphalt detection according to claim 1 is characterized in that: There are two groups of the moving components (2), the front moving components (2) are located in front of the lifting component (19), and the rear moving components (2) are located behind the first fixed rod (33). The third mounting seat (14) is located between the fixed column (20) and the first fixed rod (33), and the diameter of the first fixed rod (33) is greater than the diameter of the second fixed rod (34).

6. The sampling device for asphalt detection according to claim 1 is characterized in that: The base (37) is mounted on the top of the lifting platform (35) by a first countersunk screw, the protective tube (38) is mounted on the top of the base (37) by a second countersunk screw, the fan (39) is mounted on the top of the base (37) by a second screw, the side of the base (37) is provided with an air inlet corresponding to the fan (39), a fixing plate is fixedly mounted inside the protective tube (38), the electric heating tube (40) is mounted below the fixing plate by a mounting ring and a second screw, an air outlet is provided on the side of the fixing plate, the air outlet pipe (41) is fixedly connected to the side of the protective tube (38), the side of the protective tube (38) is provided with a first ventilation hole corresponding to the air outlet pipe (41), and the air supply pipe (42) is fixedly connected between the air inlet pipe (44) and the air outlet pipe (41).

7. The sampling device for asphalt detection according to claim 1 is characterized in that: The sampling hopper (43) is a top-open structure, a second ventilation hole is provided at the bottom of the sampling hopper (43), and a third ventilation hole corresponding to the air inlet pipe (44) is provided on the side of the sampling hopper (43).

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