Pavement asphalt detecting and sampling device

Abstract

The invention discloses a pavement asphalt detecting and sampling device, which comprises a movable cart, a cylindrical rod, a T-shaped frame, a spline shaft sleeve, a sampling barrel, a T-shaped plate and a spline shaft rod, the spline shaft rod is driven to rotate, the lifting reciprocating motion of the T-shaped frame is realized by virtue of the transmission of a belt pulley and a threaded rod, and the sampling barrel is further driven to movably drill pavement asphalt; the device is further provided with a cooling mechanism, a water storage tank, a liquid inlet pipe, a liquid discharge pipe and a spray head are used for spraying water to cool a sampling barrel and an asphalt sample in the sampling barrel in the drilling process, the influence of friction heat on sampling work is reduced, and the service life of a drill bit and the sampling barrel is prolonged; the road asphalt detection and sampling device is reasonable in structure, simple and convenient to operate and capable of effectively improving the automation level and quality of road asphalt detection and sampling.

Description

Technical Field

[0001] The present invention relates to the technical field of road asphalt detection and sampling, in particular to a road asphalt detection and sampling device. Background Art

[0002] With the acceleration of urbanization and the booming transportation industry, the importance of road infrastructure construction and maintenance has become increasingly prominent. Asphalt pavement plays a crucial role in road construction due to its excellent smoothness, anti-skid properties, and relatively low construction costs. However, the quality of asphalt pavement is directly related to the road's service life, driving safety, and smooth traffic flow. To ensure that road construction quality meets standards and to promptly identify and address potential pavement problems, asphalt pavement inspection is particularly critical. During the asphalt pavement inspection process, sampling is the foundation for obtaining accurate test data. Traditional asphalt sampling methods have many shortcomings.

[0003] The existing Chinese patent with publication number CN111458182B includes a core drilling machine base, a support frame arranged on the base, a drilling rig arranged on the support frame, and a control mechanism for driving the drilling rig to move up and down. The drilling rig includes a sampling barrel and a motor that drives the sampling barrel to rotate by rotating a belt. A water bag for cooling the interior of the sampling barrel is provided in the sampling barrel. A pushing cylinder is also provided on the sampling barrel. The sampling barrel is rotatably arranged on the outside of the piston rod of the pushing cylinder. The piston rod of the pushing cylinder penetrates into the sampling barrel and is connected to an extrusion piece for crushing the water bag.

[0004] When the above device is in use, the turntable is rotated to drive the sampling tube to move downward, so that the sampling tube can take samples downward. However, in actual use, personnel are required to manually rotate the turntable to prompt the sampling tube to take samples, which increases the workload of construction personnel and is time-consuming and labor-intensive. Therefore, it is difficult to automatically drive the sampling tube to move for sampling.

[0005] For this purpose, we proposed a road asphalt detection sampling device. Summary of the Invention

[0006] The purpose of the present invention is to provide a road asphalt detection sampling device, which has the advantage of automatically driving a sampling cylinder for mobile sampling and solves the problems in the background technology.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a road asphalt detection and sampling device, comprising a mobile cart that moves on the road surface, cylindrical rods fixedly connected at symmetrical positions on both sides of the mobile cart, a T-shaped frame that is sleeved on the outer contour of the two cylindrical rods for lifting and reciprocating movement, the end of the T-shaped frame away from the cylindrical rod is penetrated and connected to a spline shaft sleeve for fixed axis rotation, a sampling tube for sampling road asphalt is fixedly connected to the outer contour of the bottom end of the spline shaft sleeve, the ends of the two cylindrical rods are fixedly connected to T-shaped plates, the end of the T-shaped plate away from the cylindrical rod is penetrated and connected to a spline shaft driven by a power mechanism for rotation, and the inner wall of the spline shaft sleeve is penetrated by the spline shaft and connected for lifting and movement, and the T-shaped plate is provided with a sampling mechanism that drives the sampling tube to lift and reciprocate and drill the road asphalt.

[0008] Preferably, the sampling mechanism includes a threaded rod that is passed through the T-shaped plate and is connected to a fixed axis for driving the T-shaped frame to move up and down and reciprocate. A threaded sleeve is passed through and fixedly connected at the corresponding position of the T-shaped frame and the threaded rod, and the inner wall of the threaded sleeve is passed through by the threaded rod and is screwed.

[0009] Preferably, the end of the spline shaft is coaxially fixedly connected to a second pulley that drives the threaded rod to rotate on a fixed axis, and the end of the threaded rod is coaxially fixedly connected to a first pulley at a position corresponding to the second pulley, and a transmission belt is sleeved in the sliding groove on the outer contour of the first pulley and the second pulley for the spline shaft to drive the threaded rod to rotate synchronously.

[0010] Preferably, a mounting hole is provided on the mobile cart, an annular shell is fixedly connected to the inner wall of the mounting hole, and a plurality of nozzles arranged in an annular array are penetrated and fixedly connected to the inner wall of the annular shell.

[0011] Preferably, a plurality of through holes in a circular array are provided on the outer contour of the sampling cylinder near the bottom end, and the mobile cart is provided with a cooling mechanism for spraying water on the sampling cylinder and the asphalt sample inside through a nozzle.

[0012] Preferably, the cooling mechanism includes a water tank for storing water fixedly connected to the end of the mobile cart away from the cylindrical rod, the water tank is penetrated and fixedly connected with a liquid inlet pipe for transporting water to the interior of the sampling cylinder, and the end of the liquid inlet pipe away from the water tank is penetrated to the inner wall of the sampling cylinder and fixedly connected, the outer contour of the sampling cylinder close to the end of the liquid inlet pipe is penetrated and fixedly connected with a discharge pipe for discharging water to the inside of the annular shell and the nozzle for spraying, and the end of the discharge pipe away from the sampling cylinder is penetrated to the interior of the annular shell and fixedly connected.

[0013] Preferably, a piston plate for extracting and discharging water from the water tank is fixedly connected to the outer contour of the spline shaft near the bottom end, a one-way liquid inlet valve for quantitatively extracting water from the water tank is fixedly connected to the inner wall of the liquid inlet tube near one end of the sampling tube, and a one-way liquid discharge valve for quantitatively discharging water from the sampling tube is fixedly connected to the inner wall of the liquid discharge tube near one end of the sampling tube.

[0014] Preferably, the spline shaft is provided with a discharge mechanism for discharge the asphalt sample inside the sampling cylinder, the discharge mechanism includes a ejection block fixedly connected to the bottom end of the spline shaft for ejecting the asphalt sample inside the sampling cylinder, and a one-way exhaust valve fixedly connected to the outer contour of the sampling cylinder near the bottom end for discharging the gas at the bottom end of the sampling cylinder.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. During the sampling process, the spline shaft drives the second pulley to rotate, and the transmission belt drives the first pulley and the threaded rod to rotate synchronously. Under the action of the threaded rod, the threaded sleeve drives the T-shaped frame to rise and fall smoothly along the cylindrical rod, thereby driving the sampling barrel to move and drill. The radius of the first pulley is larger than that of the second pulley. The threaded rod rotates slower than the spline shaft, so that the T-shaped frame can drive the sampling barrel to move synchronously and slowly, avoiding the sampling barrel moving too fast, which will cause the friction between the sampling barrel and the asphalt pavement to increase sharply, resulting in excessive load on the motor, causing the sampling device to shut down, affecting the normal sampling work, increasing equipment maintenance costs and downtime, and extending the service life of the sampling device.

[0016] 2. During the drilling process, the piston plate moves with the sampling cylinder, drawing water from the water tank into the sampling cylinder and spraying it evenly on the sampling cylinder and asphalt sample through the nozzle. This not only reduces the frictional heat between the sampling cylinder and the asphalt pavement, but also prevents the asphalt from becoming too viscous or softening due to high temperature, thereby ensuring that the sampling cylinder can drill samples smoothly and improving the sampling quality; at the same time, it also avoids damage to the drill bit due to overheating, extends the service life of the drill bit and sampling cylinder, and reduces the maintenance cost of the equipment.

[0017] 3. When the sampling tube completes drilling and moves upward to reset, the piston plate discharges the air at the bottom of the sampling tube through the one-way exhaust valve. When the sampling tube moves to the extreme position, the ejector block collides with the asphalt sample inside the sampling tube, and the surface of the ejector block is provided with anti-slip grooves to increase the friction between the ejector block and the surface of the asphalt sample. The spline shaft drives the ejector block to rotate synchronously on a fixed axis, so that the ejector block can drive the asphalt sample to rotate and separate from the inner wall of the sampling tube and push the asphalt sample out of the inner wall of the sampling tube, realizing automatic unloading of the asphalt sample inside the sampling tube, reducing the labor intensity of personnel and improving the overall efficiency of the sampling work.

[0018] The coordinated use of the above-mentioned structure solves the problem that in actual use of the existing device, personnel need to manually rotate the turntable to prompt the sampling tube to take samples, which increases the workload of construction personnel and is time-consuming and labor-intensive, making it difficult to automatically drive the sampling tube to move for sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 This is a schematic cross-sectional view of the three-dimensional structure of the mobile cart of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the spline sleeve of the present invention; Figure 4 This is a schematic cross-sectional view of the three-dimensional structure of the T-shaped frame of the present invention; Figure 5 This is a schematic cross-sectional view of the three-dimensional structure of the sampling tube of the present invention; Figure 6 For the present invention Figure 5 Schematic diagram of the structure at A in the middle; Figure 7 This is a schematic diagram of the three-dimensional structure of the T-shaped plate of the present invention; Figure 8 It is a schematic diagram of the explosion of the three-dimensional structure of the annular shell of the present invention.

[0020] In the figure: 1. Mobile cart; 101. Mounting hole; 2. Cylindrical rod; 3. T-shaped frame; 4. Splined shaft sleeve; 5. Sampling tube; 501. Through hole; 6. T-shaped plate; 7. Splined shaft; 8. Threaded sleeve; 9. Threaded rod; 10. First pulley; 11. Second pulley; 12. Drive belt; 14. Annular housing; 15. Sprinkler; 16. Water tank; 17. Liquid inlet pipe; 18. Liquid discharge pipe; 19. Piston plate; 20. One-way liquid inlet valve; 21. One-way liquid discharge valve; 22. Ejector block; 23. One-way exhaust valve. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example 1:

[0023] See also Figures 1 to 8The present invention provides a technical solution: a road asphalt detection sampling device, comprising a mobile cart 1 that moves on the road surface, with cylindrical rods 2 fixedly connected at symmetrical positions on both sides of the mobile cart 1, and a T-shaped frame 3 that is sleeved on the outer contour of the two cylindrical rods 2 for lifting and reciprocating movement, and the end of the T-shaped frame 3 away from the cylindrical rod 2 is penetrated and fixedly rotatably connected to a spline sleeve 4, and the outer contour of the bottom end of the spline sleeve 4 is fixedly connected to a sampling tube 5 for sampling the road asphalt, and the ends of the two cylindrical rods 2 are fixedly connected to a T-shaped plate 6, and the end of the T-shaped plate 6 away from the cylindrical rod 2 is penetrated and fixedly rotatably connected to a spline shaft rod 7 driven to rotate by a power mechanism, and the inner wall of the spline shaft sleeve 4 is penetrated by the spline shaft rod 7 and lifted and moved connected, and the T-shaped plate 6 is provided with a sampling mechanism that drives the sampling tube 5 to lift and reciprocate and drill the road asphalt.

[0024] When in use, by setting up the mobile cart 1, first, a person pushes the mobile cart 1 on the road to the sampling position, which improves the flexibility of the sampling device, and the columnar rod 2 set on the mobile cart 1 is used to fix the columnar rod 2 on the mobile cart 1, and the T-shaped frame 3 set on the columnar rod 2 is used, and the columnar rod 2 supports the T-shaped frame 3, so that the T-shaped frame 3 can be lifted and moved on the outer contour of the columnar rod 2. The spline shaft sleeve 4 set on the T-shaped frame 3 is supported on the T-shaped frame 3 by a fixed axis rotation, and the sampling tube 5 set on the spline shaft sleeve 4 is fixedly supported on the spline shaft sleeve 4, so that the sampling tube 5 and the spline shaft sleeve 4 are connected, and the T-shaped plate 6 set on the columnar rod 2 is used, so that the T-shaped plate 6 can be fixedly supported on the columnar rod 2, and the T-shaped plate The spline shaft 7 provided on 6 enables the spline shaft 7 to be connected to the T-plate 6 for fixed-axis rotation. The above-mentioned power mechanism is an electric motor after power is supplied, and the output shaft on the motor is coaxially fixedly connected to the spline shaft 7. When the motor is started, the motor can drive the spline shaft 7 to perform fixed-axis reciprocating rotation on the T-plate 6, and the spline shaft 7 penetrates the inner wall of the spline shaft sleeve 4 and is connected for lifting and movement. As the spline shaft 7 rotates on the fixed axis, the spline shaft 7 can drive the sampling tube 5 to rotate on the T-frame 3 synchronously through the spline shaft sleeve 4. Through the sampling mechanism provided on the T-plate 6, the sampling tube 5 is driven to rotate on the fixed axis by the spline shaft 7, and the sampling mechanism can drive the sampling tube 5 to move up and down through the T-frame 3, so that the sampling tube 5 can perform mobile sampling of the road asphalt.

[0025] Example 2:

[0026] On the basis of the first embodiment, further steps are as follows: The sampling mechanism includes a threaded rod 9 that penetrates and is fixedly connected to the T-shaped plate 6 and drives the T-shaped frame 3 to move up and down and reciprocate. A threaded sleeve 8 is penetrated and fixedly connected at the corresponding position of the T-shaped frame 3 and the threaded rod 9, and the inner wall of the threaded sleeve 8 is penetrated by the threaded rod 9 and screwed.

[0027] The end of the spline shaft 7 is coaxially fixedly connected to a second pulley 11 that drives the threaded rod 9 to rotate on a fixed axis, and the end of the threaded rod 9 is coaxially fixedly connected to a first pulley 10 at a position corresponding to the second pulley 11. A transmission belt 12 is sleeved in the sliding groove on the outer contour of the first pulley 10 and the second pulley 11, and the spline shaft 7 drives the threaded rod 9 to rotate synchronously.

[0028] When in use, through the threaded rod 9 provided on the T-shaped plate 6, the threaded rod 9 can be connected to the T-shaped plate 6 for fixed-axis rotation, through the threaded sleeve 8 provided on the T-shaped frame 3, and the threaded sleeve 8 is fixedly supported on the T-shaped frame 3, the threaded sleeve 8 is sleeved on the outer contour of the threaded rod 9 and screwed, through the first pulley 10 provided on the threaded rod 9 and the second pulley 11 provided on the spline shaft 7, so that the first pulley 10 and the second pulley 11 can be coaxially fixedly connected to the threaded rod 9 and the spline shaft 7 respectively, through the transmission belt provided on the first pulley 10 and the second pulley 11 12, can make the transmission belt 12 transmission sleeve be arranged in the slide groove of the outer contour of the first pulley 10 and the second pulley 11, accompanied by the fixed-axis reciprocating rotation of the spline shaft 7, and the spline shaft 7 can drive the second pulley 11 to rotate synchronously, so that the transmission belt 12 can drive the threaded rod 9 to synchronously rotate back and forth on the T-shaped plate 6 through the first pulley 10, and at the same time, the threaded sleeve 8 can drive the T-shaped frame 3 to move up and down and back and forth on the cylindrical rod 2 under the action of the threaded rod 9, and then the T-shaped frame 3 can drive the sampling tube 5 to move up and down and back and forth synchronously through the spline shaft sleeve 4.

[0029] In actual use, Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, in the initial state, the T-shaped frame 3 drives the sampling tube 5 to be located at the extreme position of the end of the cylindrical rod 2. When sampling the road asphalt, the spline shaft 7 is driven by the motor to rotate counterclockwise, and the transmission belt 12 can drive the threaded rod 9 to rotate counterclockwise synchronously on the T-shaped plate 6, so that the threaded sleeve 8 can drive the T-shaped frame 3 to move in the downward vertical direction under the action of the threaded rod 9. Then, the T-shaped frame 3 can drive the spline shaft sleeve 4 and the sampling tube 5 to move synchronously in the downward vertical direction on the outer contour of the spline shaft 7, accompanied by the spline shaft 7 driving the sampling tube 5 to rotate synchronously on a fixed axis, thereby realizing that the sampling tube 5 can move to drill the road asphalt sample.

[0030] And the radius of the first pulley 10 is larger than that of the second pulley 11, so the threaded rod 9 has a slower rotation speed than the spline shaft 7, so that the T-shaped frame 3 can drive the sampling tube 5 to move synchronously and slowly, avoiding the sampling tube 5 moving too fast, which will cause the friction between the sampling tube 5 and the asphalt pavement to increase sharply, causing the motor to bear excessive load, causing the sampling device to shut down, affecting the normal sampling work, increasing equipment maintenance costs and downtime, and extending the service life of the sampling device.

[0031] When the sampling barrel 5 has completed drilling the asphalt sample from the road surface, the motor drives the spline shaft 7 to rotate clockwise, and the above structure simultaneously resets and moves in the opposite direction, so that the sampling barrel 5 can take the internal asphalt sample out of the hole in the road surface.

[0032] Example 3:

[0033] On the basis of the second embodiment, further steps are as follows: The mobile cart 1 is provided with a mounting hole 101 , an annular shell 14 is fixedly connected to the inner wall of the mounting hole 101 , and a plurality of nozzles 15 arranged in an annular array are penetrated and fixedly connected to the inner wall of the annular shell 14 .

[0034] The outer contour of the sampling tube 5 near the bottom is provided with a plurality of through holes 501 in an annular array. The mobile cart 1 is provided with a cooling mechanism for spraying water on the sampling tube 5 and the asphalt sample inside through a nozzle 15 .

[0035] When in use, the mounting hole 101 opened on the mobile cart 1 and the annular shell 14 provided on the mounting hole 101 are used to fix the annular shell 14 on the inner wall of the mounting hole 101. The nozzle 15 provided on the annular shell 14 is arranged in an annular array on the inner wall of the annular shell 14, so that the nozzle 15 can be connected with the interior of the annular shell 14. The cooling mechanism provided on the mobile cart 1 enables the cooling mechanism to spray water on the outer contour of the sampling tube 5 through the nozzle 15, and the through hole 501 opened on the sampling tube 5 is formed around the through hole 501. The array is arranged on the sampling barrel 5, ensuring that the water sprayed by the nozzle 15 can enter the interior of the sampling barrel 5 through the through hole 501, and can cool the sampling barrel 5 and the asphalt sample inside, thereby avoiding the generation of a large amount of frictional heat between the sampling barrel 5 and the asphalt pavement during the drilling process of the sampling barrel 5. Since asphalt is a thermoplastic material, its physical properties will change at high temperatures, causing the asphalt to become too viscous or soften, thereby increasing the difficulty of drilling. At the same time, water spraying can effectively reduce the temperature of the drill bit, prevent the drill bit from being damaged due to overheating, and extend the service life of the drill bit.

[0036] Example 4:

[0037] On the basis of the third embodiment, further steps are as follows: The cooling mechanism includes a water tank 16 for storing water fixedly connected to the end of the mobile cart 1 away from the cylindrical rod 2, and a liquid inlet pipe 17 for transporting water to the interior of the sampling cylinder 5 is penetrated and fixedly connected to the water tank 16, and the end of the liquid inlet pipe 17 away from the water tank 16 is penetrated to the inner wall of the sampling cylinder 5 and fixedly connected, and the outer contour of the sampling cylinder 5 close to the end of the liquid inlet pipe 17 is penetrated and fixedly connected to a discharge pipe 18 for discharging water to the annular shell 14 and the nozzle 15 for spraying, and the end of the discharge pipe 18 away from the sampling cylinder 5 is penetrated to the interior of the annular shell 14 and fixedly connected.

[0038] A piston plate 19 for extracting and discharging water from the water tank 16 is fixedly connected to the outer contour of the spline shaft 7 near the bottom end, and a one-way liquid inlet valve 20 for quantitatively extracting water from the water tank 16 is fixedly connected to the inner wall of the liquid inlet pipe 17 near one end of the sampling cylinder 5, and a one-way liquid discharge valve 21 for quantitatively discharging water from the water tank 16 is fixedly connected to the inner wall of the liquid discharge pipe 18 near one end of the sampling cylinder 5.

[0039] When in use, through the water storage tank 16 provided on the mobile cart 1, and the water storage tank 16 is fixedly supported on the mobile cart 1, first fill the water storage tank 16 with water for storage, through the liquid inlet pipe 17 provided on the water storage tank 16, the liquid inlet pipe 17 can connect the water storage tank 16 with the inner wall of the sampling cylinder 5, through the liquid discharge pipe 18 provided on the sampling cylinder 5, the liquid discharge pipe 18 can connect the sampling cylinder 5 with the inner wall of the annular shell 14, through the piston plate 19 provided on the spline shaft 7, the outer contour of the piston plate 19 can be fitted with the inner wall of the sampling cylinder 5 and movably connected, as the T-shaped frame 3 drives the sampling cylinder 5 to move downward to drill the asphalt sample, and the piston plate 1 9 moves toward the end near the sampling cylinder 5, so that the internal air pressure near the end of the nozzle 15 is in a positive pressure state, and the one-way liquid inlet valve 20 provided on the liquid inlet pipe 17 and the one-way liquid discharge valve 21 provided on the liquid discharge pipe 18, at this time, the one-way liquid inlet valve 20 is in a closed state, and the one-way liquid discharge valve 21 is in an open state, then the piston plate 19 can discharge the water source inside the sampling cylinder 5 through the liquid discharge pipe 18 to the inner wall of the annular shell 14, so that the nozzle 15 can spray the water source onto the sampling cylinder 5 and the asphalt sample inside, realizing that the sampling cylinder 5 and the asphalt sample inside can be cooled during the drilling process, thereby improving the sampling quality of the road asphalt and extending the service life of the sampling cylinder 5.

[0040] When the T-shaped frame 3 drives the sampling tube 5 to reset upward, the above structure moves synchronously in the opposite direction, and the internal air pressure near the end of the sampling tube 5 is in a negative pressure state. At this time, the one-way liquid inlet valve 20 is in an open state and the one-way liquid discharge valve 21 is in a closed state, so that the piston plate 19 can quantitatively draw the water source inside the water tank 16 into the interior of the sampling tube 5 through the liquid inlet pipe 17.

[0041] Embodiment 5:

[0042] On the basis of the fourth embodiment, further steps are as follows: The spline shaft 7 is provided with a discharge mechanism for discharge of the asphalt sample inside the sampling tube 5. The discharge mechanism includes an ejection block 22 fixedly connected to the bottom end of the spline shaft 7 for ejecting the asphalt sample inside the sampling tube 5, and a one-way exhaust valve 23 fixedly connected to the outer contour of the sampling tube 5 near the bottom end for discharging the gas at the bottom end of the sampling tube 5.

[0043] When in use, the ejector block 22 provided on the spline shaft 7 is fixedly supported on the spline shaft 7, and the one-way exhaust valve 23 provided on the sampling cylinder 5 is used. When the asphalt sample drilled inside the sampling cylinder 5 covers the through hole 501, the sampling cylinder 5 moves downward to drill, and the piston plate 19 moves toward the top of the sampling cylinder 5. At this time, the internal air pressure near the bottom of the sampling cylinder 5 is in a negative pressure state, and the one-way exhaust valve 23 is in a closed state, which can guide the asphalt sample to move and be stored in the interior of the sampling cylinder 5. When the sampling cylinder 5 is reset in the upward vertical direction, the internal air pressure at the bottom of the sampling cylinder 5 is in a positive pressure state, and the one-way exhaust valve 23 is in a closed state. When the exhaust valve 23 is in the open state, the piston plate 19 can discharge the air at the bottom end of the sampling cylinder 5 through the one-way exhaust valve 23. When the sampling cylinder 5 moves upward to the extreme position, the ejector block 22 can contact the asphalt sample inside the sampling cylinder 5. The surface of the ejector block 22 is provided with anti-slip grooves to increase the friction between the ejector block 22 and the surface of the asphalt sample. The spline shaft 7 drives the ejector block 22 to rotate synchronously on a fixed axis, so that the ejector block 22 can drive the asphalt sample to rotate and separate from the inner wall of the sampling cylinder 5 and push the asphalt sample out of the inner wall of the sampling cylinder 5, thereby realizing automatic unloading of the asphalt sample inside the sampling cylinder 5 and further improving the overall efficiency of the sampling work.

[0044] Furthermore, the existing device can automatically drive the sampling tube to move and sample during actual use, which is convenient to use and better than traditional products.

[0045] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and drawings can also be directly processed according to existing technical common sense without any doubt. At the same time, the connection method of each component adopts the mature conventional means in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so no specific description will be given here.

[0046] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A road asphalt detection sampling device, characterized by: The invention comprises a mobile cart (1) that moves on a road surface, wherein cylindrical rods (2) are fixedly connected at symmetrical positions on both sides of the mobile cart (1), and a T-shaped frame (3) that is sleeved on the outer contours of the two cylindrical rods (2) for lifting and reciprocating movement is provided, and one end of the T-shaped frame (3) away from the cylindrical rods (2) is penetrated and connected to a spline shaft sleeve (4) for fixed axis rotation, and a sampling tube (5) for sampling road surface asphalt is fixedly connected to the outer contour of the bottom end of the spline shaft sleeve (4), and the ends of the two cylindrical rods (2) are fixedly connected to a T-shaped plate (6), and one end of the T-shaped plate (6) away from the cylindrical rods (2) is penetrated and connected to a spline shaft rod (7) driven to rotate by a power mechanism, and the inner wall of the spline shaft sleeve (4) is penetrated by the spline shaft rod (7) and is lifted and moved, and a sampling mechanism is provided on the T-shaped plate (6) for driving the sampling tube (5) to lift and reciprocate and drill the road surface asphalt.

2. A road asphalt detection sampling device according to claim 1, characterized in that: The sampling mechanism comprises a threaded rod (9) which is passed through the T-shaped plate (6) and is connected to the T-shaped frame (3) for reciprocating movement. A threaded sleeve (8) is passed through and fixedly connected to the T-shaped frame (3) at a position corresponding to the threaded rod (9), and the inner wall of the threaded sleeve (8) is passed through and screwed by the threaded rod (9).

3. The road asphalt detection sampling device according to claim 2, characterized in that: The end of the spline shaft (7) is coaxially fixedly connected to a second pulley (11) for driving the threaded rod (9) to rotate on a fixed axis, and the end of the threaded rod (9) is coaxially fixedly connected to a first pulley (10) at a position corresponding to the second pulley (11). A transmission belt (12) is provided in the sliding grooves on the outer contours of the first pulley (10) and the second pulley (11) for driving the spline shaft (7) to drive the threaded rod (9) to rotate synchronously.

4. The road asphalt detection sampling device according to claim 1, characterized in that: The mobile cart (1) is provided with a mounting hole (101), the inner wall of the mounting hole (101) is fixedly connected to an annular shell (14), and the inner wall of the annular shell (14) is penetrated and fixedly connected to a plurality of nozzles (15) arranged in an annular array.

5. The road asphalt detection sampling device according to claim 4, characterized in that: The outer contour of the sampling tube (5) near the bottom end is provided with a plurality of through holes (501) in a circular array, and the mobile cart (1) is provided with a cooling mechanism for spraying water on the sampling tube (5) and the asphalt sample inside through a nozzle (15).

6. The road asphalt detection sampling device according to claim 5, characterized in that: The cooling mechanism includes a water tank (16) for storing water fixedly connected to one end of the mobile cart (1) away from the cylindrical rod (2), a liquid inlet pipe (17) for conveying water to the interior of the sampling cylinder (5) is passed through and fixedly connected to the water tank (16), and the end of the liquid inlet pipe (17) away from the water tank (16) passes through the inner wall of the sampling cylinder (5) and is fixedly connected, and a liquid discharge pipe (18) for discharging water to the inside of the annular shell (14) and the nozzle (15) for spraying is passed through and fixedly connected to the outer contour of the sampling cylinder (5) near the end of the liquid inlet pipe (17), and the end of the liquid discharge pipe (18) away from the sampling cylinder (5) passes through the interior of the annular shell (14) and is fixedly connected.

7. The road asphalt detection sampling device according to claim 6, characterized in that: A piston plate (19) for extracting and discharging water from the water storage tank (16) is fixedly connected to the outer contour of the spline shaft (7) near the bottom end, a one-way liquid inlet valve (20) for quantitatively extracting water from the water storage tank (16) is fixedly connected to the inner wall of one end of the liquid inlet pipe (17) near the sampling cylinder (5), and a one-way liquid discharge valve (21) for quantitatively discharging water from the sampling cylinder (5) is fixedly connected to the inner wall of one end of the liquid discharge pipe (18) near the sampling cylinder (5).

8. The road asphalt sampling device according to claim 7, characterized in that: The spline shaft (7) is provided with a discharge mechanism for discharging the asphalt sample inside the sampling barrel (5), the discharge mechanism comprising a discharge block (22) fixedly connected to the bottom end of the spline shaft (7) for discharging the asphalt sample inside the sampling barrel (5), and a one-way exhaust valve (23) fixedly connected to the outer contour of the sampling barrel (5) near the bottom end for discharging the gas at the bottom end of the sampling barrel (5).

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