Pavement asphalt content detection device

Abstract

The utility model provides a pavement asphalt content detection device, which relates to the technical field of pavement detection devices, and comprises a bottom plate, an asphalt content detector fixedly arranged on one side of the top of the bottom plate, a feeding hole formed in one side of the asphalt content detector, and a sampling mechanism arranged above the bottom plate in an up-down telescopic manner, the sampling mechanism comprises a material containing bottom plate and a material taking pipe, the material containing bottom plate is horizontally arranged and is separated from the outer side wall of the feeding port, the material taking pipe is close to the feeding port and is rotationally arranged on the lower portion of the material containing bottom plate in a penetrating mode, a drill shaft is axially and fixedly arranged in the material taking pipe, and a drill bit is fixedly arranged at the bottom of the drill shaft. A spiral material guide plate is fixedly arranged on the drill spindle from the bottom to the top of the material taking pipe in a surrounding mode, a first driving source used for driving the material taking pipe to rotate is further arranged on the material containing bottom plate, a material pushing mechanism is fixedly arranged on the material containing bottom plate and comprises a material pushing plate, and the material pushing plate is arranged on the side, away from the feeding port, of the material taking pipe in a telescopic mode; when the material containing bottom plate is flush with the bottom of the feeding port, the material pushing plate can stretch into the feeding port.

Description

Technical Field

[0001] This utility model relates to the technical field of road surface testing devices, and in particular to a road surface asphalt content testing device. Background Technology

[0002] The detection of asphalt content in asphalt pavements is of paramount importance. As the main bonding material of the pavement, the asphalt content directly determines the quality, durability, and service life of the pavement. Accurate detection of asphalt content ensures that pavement construction meets design requirements, avoiding problems such as cracking and peeling due to insufficient asphalt content, thereby extending the pavement's service life and reducing maintenance costs. Furthermore, asphalt content detection helps assess the pavement's resistance to water damage and rutting, providing strong support for the long-term stable operation of the pavement. The test results also provide a scientific basis for pavement disease diagnosis and maintenance decisions, ensuring road safety and comfort. Therefore, effective detection of asphalt content is necessary during asphalt paving. The detection process involves multiple steps, including temperature measurement, sampling, and testing, resulting in a long testing cycle, low testing efficiency, and the inability to quickly obtain test results, thus affecting the construction progress.

[0003] Chinese utility model patent CN221855219U discloses a "device for detecting asphalt content in asphalt pavement", which includes a base and a traveling wheel at the bottom of the base. An asphalt content detector is fixedly mounted on one end of the top surface of the base, and a U-shaped frame is fixedly mounted on the other end of the top surface of the base. The movable end of the electric push rod extends out of the bottom surface of the lifting seat and is fixedly mounted on a mounting seat. A connecting cylinder is fixedly mounted on the bottom surface of the mounting seat. The connecting cylinder has an external thread, and a threaded cylinder that is compatible with it is fitted on the external thread. A sampling cylinder that can extend into the connecting cylinder is fixedly inserted on the bottom wall of the threaded cylinder. The outer side of the sampling cylinder below the threaded cylinder has a conical structure, and a feed groove is opened on the upper part of the conical structure.

[0004] Although the above structure can integrate multiple processes such as temperature measurement, sampling, and testing into a single device and can also facilitate convenient and quick sample collection and processing, some problems still exist: after sampling, the sampling tube needs to be manually removed and poured into the asphalt content analyzer, which is relatively troublesome. In addition, the feed trough in the above structure is open, and the sample is easy to fall out of the feed trough during vibration or movement. If the asphalt sample is at a high temperature at this time, there is a risk of burns during the pouring process. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a road asphalt content detection device, which solves the problems of requiring manual material transfer, samples easily falling out of the feed trough, and the risk of burns during the pouring of high-temperature samples.

[0006] According to an embodiment of this utility model, a road asphalt content testing device includes a horizontally arranged base plate, with casters fixedly arranged at the four corners of the bottom of the base plate, an asphalt content detector fixedly arranged on one side of the top of the base plate, and a feed inlet provided on one side of the asphalt content detector, and further includes:

[0007] The sampling mechanism is telescopically mounted above the base plate. The sampling mechanism includes a material placement base plate and a material collection tube. The material placement base plate is horizontally mounted and separated from the outer wall of the feed inlet. The material collection tube passes through the feed inlet and is rotatably mounted on the lower part of the material placement base plate. A drill shaft is axially fixed inside the tube. A drill bit is fixedly mounted at the bottom of the drill shaft. A spiral guide plate is fixedly mounted around the drill shaft from the bottom to the top of the material collection tube. A first drive source for driving the material collection tube to rotate is also provided on the material placement base plate.

[0008] A pushing mechanism is fixedly mounted on the material placement base plate. The pushing mechanism includes a pushing plate, which is telescopically mounted on the side of the material receiving tube away from the inlet. When the material placement base plate is flush with the bottom of the inlet, the pushing plate can extend into the inlet.

[0009] The technical principle of this utility model is as follows: When in use, the sampling mechanism is extended downwards. When the sampling tube comes into contact with the asphalt ground, the first drive source is activated to drive the sampling tube to rotate. The drill bit and spiral guide plate in the sampling tube will break the asphalt ground. As the sampling tube goes deeper downwards, the broken asphalt sample moves upwards along the spiral guide plate and finally falls out from the feed port and accumulates on the placement base plate. After sampling is completed, the placement base plate is adjusted to be flush with the bottom of the feed port, and then the asphalt sample is pushed into the feed port by the forward extension of the pusher plate.

[0010] Furthermore, a pair of material placement side plates are fixedly arranged perpendicularly to the pusher plate on the material placement base plate. The material placement side plates are symmetrically arranged at both ends of the material taking tube. A material placement top plate is fixedly connected to the top of the two material placement side plates. The side wall of the pusher plate is connected to the material placement top plate, the material placement side plates and the material placement base plate to form a rectangular pusher channel.

[0011] Furthermore, a side plate is fixedly installed on one side of the base plate, a top plate is fixedly installed on the top of the side plate, and a first cylinder is fixedly installed on the top plate, with the output end of the first cylinder fixedly connected to the material placement top plate.

[0012] Furthermore, the base plate has an opening larger than the clearance opening of the material placement base plate.

[0013] Furthermore, the pushing mechanism includes a second cylinder and a mounting plate. The mounting plate is fixedly disposed on the side of the material receiving tube away from the inlet. The second cylinder is fixedly disposed on the mounting plate and its output end is fixedly connected to the pushing plate.

[0014] Furthermore, the first driving source includes a motor, which is fixedly connected to the top or bottom of the material placement base plate. A drive gear is fixedly connected to the output end of the motor, and a driven gear is fixedly connected around the outer wall of the material picking tube. The drive gear and the driven gear mesh with each other.

[0015] Furthermore, a chain is also arranged around the drive gear and the driven gear, and the chain meshes with the drive gear and the driven gear respectively.

[0016] Furthermore, a rotating seat is fixedly installed at the top of the material taking tube. The rotating seat is embedded in and rotatably disposed within the material placing base plate. The top surface of the rotating seat is flush with the top surface of the material placing base plate. The rotating seat is provided with a feeding port that connects the inside and outside of the material taking tube.

[0017] Furthermore, a plurality of first crushing heads are fixedly arranged around the bottom of the drill bit, and a plurality of second crushing heads are fixedly connected to the bottom end of the spiral guide plate.

[0018] Furthermore, an infrared temperature sensor is also fixedly installed at the bottom of the material placement base plate.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. By using a drill bit and a spiral guide plate, the asphalt sample broken by the drill bit in the sampling cylinder can be moved up along the spiral guide plate and fall out from the feed port onto the bottom plate. The spiral structure of the spiral guide plate can provide a certain support force for the sample, thereby reducing the occurrence of sample falling.

[0021] 2. By extending and retracting a pusher plate on the side of the material collection tube away from the inlet, after adjusting the material placement base plate to be flush with the bottom of the inlet, the pusher plate can push the asphalt sample into the inlet. There is no need for manual removal of the sample from the material collection tube. The operation process is simple, convenient, safe and efficient. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0023] Figure 2 for Figure 1 A magnified schematic diagram of the structure at point A in the diagram.

[0024] Figure 3This is a partial cross-sectional side view of an embodiment of the present utility model.

[0025] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point B in the diagram.

[0026] Figure 5 This is a bottom view of a partial structural cross-section of an embodiment of the present utility model.

[0027] Figure 6 for Figure 5 A magnified schematic diagram of the structure at point C.

[0028] In the above attached diagrams: 1. Base plate; 11. Side plate; 12. Top plate; 13. Push handle; 14. Caster wheel; 15. Clearance opening; 21. First cylinder; 22. Material placement top plate; 23. Material placement side plate; 24. Material placement bottom plate; 241. Clearance groove; 25. Mounting plate; 26. Second cylinder; 27. Pushing plate; 28. Pushing channel; 3. Material picking pipe; 31. Rotating seat; 311. Feeding port; 32. Drill shaft; 33. Spiral guide plate; 331. Second crushing head; 34. Drill bit; 341. First crushing head; 35. Motor; 36. Drive gear; 37. Driven gear; 38. Chain; 39. Protective cover; 4. Infrared temperature sensor; 5. Asphalt content detector; 51. Feed inlet; 511. Limiting strip. Detailed Implementation

[0029] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0030] like Figure 1 As shown in the figure, this utility model embodiment proposes a road asphalt content detection device, which includes a horizontally arranged base plate 1. The four corners of the bottom of the base plate 1 are fixedly provided with casters 14 to facilitate the movement of the device. An asphalt content detector 5 is fixedly provided on one side of the top of the base plate 1. An inlet 51 is provided on one side of the asphalt content detector 5. A pusher 13 is also fixedly provided on the side of the base plate 1 away from the inlet 51 to push the device to move.

[0031] like Figure 1-5As shown, a sampling mechanism is telescopically mounted above the base plate 1. The sampling mechanism includes a material placement base plate 24 and a material collection tube 3. The material placement base plate 24 is horizontally positioned and separated from the outer wall of the inlet 51. That is, when the material placement base plate 24 moves vertically, its side wall near the inlet 51 is always in close contact with the outer wall of the asphalt content detector 5. A clearance opening 15 larger than that of the material placement base plate 24 is provided on the base plate 1 to facilitate the downward movement of the sampling mechanism for sampling. The bottom of the material placement base plate 24 is also fixed. An infrared temperature sensor 4 is provided for detecting the temperature of the sampled asphalt. The sampling tube 3 is located near the feed inlet 51 and is rotatably mounted on the lower part of the material placement base plate 24. A rotating seat 31 is fixedly mounted on the top of the sampling tube 3. The rotating seat 31 is embedded in and rotatably mounted within the material placement base plate 24. The top surface of the rotating seat 31 is flush with the top surface of the material placement base plate 24. The rotating seat 31 is provided with a feeding port 311 that connects the inside and outside of the sampling tube 3. The feeding port 311 is preferably semi-circular. A drill shaft 32 is axially fixed inside the material collection tube 3. The drill shaft 32 is fixedly connected to the bottom of the rotating seat 31. A drill bit 34 is fixedly mounted at the bottom of the drill shaft 32. A spiral guide plate 33 is fixedly mounted around the drill shaft 32 from the bottom to the top of the material collection tube 3. The top of the spiral guide plate 33 is connected to one side of the feeding port 311, so that the asphalt sample can move smoothly upward along the upper surface of the spiral guide plate 33 and come out of the feeding port 311. Furthermore, to ensure the collection... To ensure the accuracy of sample testing, asphalt samples can be broken into smaller particles. Therefore, several first fragment heads 341 are fixedly arranged around the bottom of the drill bit 34. The first fragment heads 341 have a reverse spiral pointed structure opposite to the rotation direction of the drill bit 34. Several second fragment heads 331 are evenly distributed along the bottom surface of the spiral guide plate 33. The second fragment heads 331 have a maple leaf-shaped three-pointed structure, with the three points perpendicular to the top, side, and bottom surfaces of the spiral guide plate 33, respectively. It should be emphasized that, in order to make the sampling process smoother, the sampling tube 3 should not be too long, and the width of the spiral guide plate 33 should not be too wide, to avoid the sampling tube 3 accommodating too many samples, resulting in a large number of samples, excessive sampling time, or the need for multiple drilling for sampling.

[0032] like Figure 5 and Figure 6As shown, the material placement base plate 24 is also provided with a first drive source for driving the material taking tube 3 to rotate. The first drive source is a motor 35, which is fixedly connected to the top or bottom of the material placement base plate 24. In this embodiment, the motor 35 is fixedly connected to the top of the material placement base plate 24, and its output end is fixedly connected to a drive gear 36. A driven gear 37 is fixedly connected around the outer wall of the material taking tube 3. The drive gear 36 and the driven gear 37 mesh with each other. As an alternative transmission method, a chain 38 can also be arranged around the drive gear 36 and the driven gear 37. The chain 38 meshes with the drive gear 36 and the driven gear 37 respectively, thereby transmitting the torque generated by the drive of the motor 35. A protective cover 39 can also be detachably provided around the drive gear 36 and the driven gear 37 to protect the internal structure.

[0033] like Figure 1-4 As shown, a pushing mechanism is also fixedly installed above the base plate 1. The pushing mechanism includes a second cylinder 26 and a mounting plate 25. The mounting plate 25 is fixedly installed on the side of the material taking tube 3 away from the inlet 51. The second cylinder 26 is fixedly installed on the mounting plate 25 and its output end is fixedly connected to a pushing plate 27. The pushing plate 27 is on the same vertical plane as the inlet 51, and the shape of the pushing plate 27 is smaller than that of the inlet 51, so that when the material placing base plate 24 is flush with the bottom of the inlet 51, the pushing plate 27 can extend into the inlet 51, thereby ensuring that the asphalt sample can be smoothly pushed into the asphalt content detector 5.

[0034] like Figure 1-4As shown, in this embodiment, considering the accuracy and effective utilization of sample feeding, a side plate 11 is fixedly installed on one side of the base plate 1, and a top plate 12 is fixedly installed on the top of the side plate 11. A first cylinder 21 is fixedly installed on the top plate 12. A pair of feeding side plates 23 are also fixedly installed on the feeding base plate 24 perpendicular to the feeding plate 27. The feeding side plates 23 are symmetrically arranged with the feeding tube 3 as the center. A feeding top plate 22 is fixedly connected to the top of the two feeding side plates 23. The output end of the first cylinder 21 is fixedly connected to the feeding top plate 22. The feeding top plate 22 and the feeding side plates 23 are fixedly connected. The material feeding plate 27 and the material placement base plate 24 are connected to form a rectangular feeding channel 28. The side wall of the feeding plate 27 is separate from the inner wall of the feeding channel 28, so that the feeding plate 27 can push all the sample entering the feeding channel 28 into the feed inlet 51, greatly increasing the effective utilization rate of the sample. Furthermore, a pair of limiting strips 511 are symmetrically arranged on the outer wall of the feed inlet 51. The inner walls of the two limiting strips 511 are separate from the outer wall of the material placement side plate 23, further increasing the airtightness between the feeding channel 28 and the feed inlet 51, preventing the sample from spilling out of the gaps during the feeding process. Figure 6 As shown, in order for the material handling mechanism to slide smoothly up and down, if necessary, the material placement base plate 24 needs to have a clearance groove 241 that allows the limiting strip 511 to slide up and down.

[0035] The technical principle of this utility model is as follows: When in use, first start the first cylinder 21 to drive the material taking tube 3 to move downwards and extend. When the material taking tube 3 comes into contact with the asphalt ground, start the motor 35 to drive the material taking tube 3 to rotate. The drill bit 34 and the spiral guide plate 33 in the material taking tube 3 will break the asphalt ground. As the material taking tube 3 goes deeper downwards, the broken asphalt sample moves upwards along the spiral guide plate 33 and finally falls out from the feed port 311 and accumulates on the material placement base plate 24. After sampling is completed, drive the first cylinder 21 again to adjust the material placement base plate 24 to be flush with the bottom of the feed port 51. Finally, drive the second cylinder 26 to drive the pusher plate 27 to extend forward and push the asphalt sample into the feed port 51. Then turn on the asphalt content detector 5 to perform the test.

[0036] This invention, through the cooperation of drill bit 34 and spiral guide plate 33, allows the asphalt sample broken by drill bit 34 in the sampling tube to move upward along spiral guide plate 33 as the sampling tube 3 descends, and fall out from the feed port 311, accumulating on the placement base plate 24. The spiral structure of spiral guide plate 33 can provide a certain support force for the sample, thereby reducing the occurrence of sample falling. The pushing channel 28 formed by placement base plate 24, placement side plate 23 and placement top plate 22 can provide a stable storage space for the sample. Furthermore, by fixing a second cylinder 26 on the side of the sampling tube 3 away from the feed port 51, and driving the pushing plate 27 facing the feed port 51 to translate and extend, after adjusting the placement base plate 24 to be flush with the bottom of the feed port 51, the pushing plate 27 can directly push the asphalt sample into the feed port 51. The entire sample delivery process is automated, without the need for manual removal of the sample from the sampling tube 3. The operation process is simple, convenient, safe and efficient.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A road asphalt content detection device, comprising a horizontally arranged bottom plate (1), the bottom plate (1) is fixedly provided with universal wheels (14) at the bottom corners, and an asphalt content detector (5) is fixedly arranged at one side of the top of the bottom plate (1), and a feeding port (51) is arranged on one side of the asphalt content detector (5), characterized in that, Also include: The sampling mechanism is arranged above and below the bottom plate (1), which includes a material placement bottom plate (24) and a material taking pipe (3). The material placement bottom plate (24) is horizontally arranged and separated from the outer wall of the feed inlet (51). The material taking pipe (3) is arranged through and rotatingly arranged at the lower part of the material placement bottom plate (24) near the feed inlet (51). The drill shaft (32) is fixedly arranged in the inner shaft of the material taking pipe (3). The drill head (34) is fixedly arranged at the bottom of the drill shaft (32). The spiral guide plate (33) is fixedly arranged around the drill shaft (32) from the bottom to the top of the material taking pipe (3). The material placement bottom plate (24) is also provided with a first driving source for driving the rotation of the material taking pipe (3); The pushing mechanism is fixedly arranged on the material placement bottom plate (24). The pushing mechanism includes a pushing plate (27). The pushing plate (27) is arranged on the side of the material taking pipe (3) away from the feed inlet (51). When the material placement bottom plate (24) is flush with the bottom of the feed inlet (51), the pushing plate (27) can extend into the feed inlet (51).

2. A device for detecting the asphalt content of a road surface as claimed in claim 1, characterized in that: A pair of material placement side plates (23) are fixedly arranged on the material placement bottom plate (24) perpendicular to the pushing plate (27). The material placement side plates (23) are symmetrically arranged at both ends of the material taking pipe (3). The top ends of the two material placement side plates (23) are fixedly connected with a material placement top plate (22). The side wall of the pushing plate (27) is connected with the material placement top plate (22), the material placement side plates (23) and the material placement bottom plate (24) to form a rectangular pushing channel (28) inner wall.

3. A device for detecting the asphalt content of a road surface as claimed in claim 2, characterized in that: A side plate (11) is fixedly arranged on one side of the bottom plate (1). A top plate (12) is fixedly arranged on the top of the side plate (11). A first air cylinder (21) is fixedly arranged on the top plate (12). The output end of the first air cylinder (21) is fixedly connected with the material placement top plate (22).

4. A device for detecting the asphalt content of a road surface as claimed in claim 3, characterized in that: A clearance (15) is formed on the bottom plate (1), which is larger than the material placement bottom plate (24).

5. The pavement asphalt content detection device of claim 1, wherein: The pushing mechanism includes a second air cylinder (26) and a mounting plate (25). The mounting plate (25) is fixedly arranged on the side of the material taking pipe (3) away from the feed inlet (51). The second air cylinder (26) is fixedly arranged on the mounting plate (25), and the output end of the second air cylinder (26) is fixedly connected with the pushing plate (27).

6. The pavement asphalt content detection device of claim 1, wherein: The first driving source includes a motor (35). The motor (35) is fixedly connected on the top or bottom of the material placement bottom plate (24). The output end of the motor (35) is fixedly connected with a driving gear (36). The outer wall of the material taking pipe (3) is fixedly connected with a driven gear (37). The driving gear (36) and the driven gear (37) are meshed with each other.

7. A device for detecting the asphalt content of a road surface as claimed in claim 6, characterized in that: The driving gear (36) and the driven gear (37) are also fixedly arranged with a chain (38) around the outer wall. The chain (38) is meshed with the driving gear (36) and the driven gear (37) respectively.

8. The pavement asphalt content detection device of claim 1, wherein: The top of the material taking pipe (3) is fixedly provided with a rotating seat (31), which is embedded and rotatably arranged in the material placing bottom plate (24), the top surface of the rotating seat (31) is flush with the top surface of the material placing bottom plate (24), and the rotating seat (31) is provided with a feeding opening (311) communicating inside and outside of the material taking pipe (3).

9. The pavement asphalt content detection device of claim 1, wherein: The bottom of the drill bit (34) is fixedly provided with a plurality of first crushing heads (341), and the bottom end of the spiral material guide plate (33) is fixedly connected with a plurality of second crushing heads (331).

10. The pavement asphalt content detection device of claim 1, wherein: The bottom of the material placing bottom plate (24) is also fixedly provided with an infrared temperature sensor (4).

Images