Roadbed compactness detecting and sampling device for highway engineering

Abstract

The invention relates to the technical field of highway engineering, in particular to a roadbed compactness detection sampling device for highway engineering, which comprises an upper ring piece and a lower ring piece arranged on the lower side of the upper ring piece, the top end of the upper ring piece is fixedly connected with an upper cover, the upper end of the upper cover is fixedly connected with an air pump, the upper cover is provided with a circular groove, and the circular groove is fixedly connected with the lower ring piece. A conical insertion rod is vertically and movably inserted into the bottom end of the upper ring piece, a reset spring is fixedly connected between the top end of the conical insertion rod and the upper ring piece, and the bottom end of the conical insertion rod is movably inserted into the lower ring piece. According to the roadbed compactness detecting and sampling device for the highway engineering, before the upper ring piece rotates clockwise, the extrusion rings on the two sides extrude the inner cavity of the lower ring piece, so that soil in the upper ring piece is prevented from falling down, and after the upper ring piece rotates clockwise, gas can be sprayed out from the bottom end of a third connecting groove, so that the compactness of the roadbed is detected. Furthermore, the soil in the upper ring piece and the lower ring piece is downwards extruded, and the gas has different effects in different states.

Description

Technical Field

[0001] The invention relates to the technical field of highway engineering, in particular to a roadbed compaction detection sampling device used in highway engineering. Background Art

[0002] The roadbed compaction test of highway projects is one of the most critical indicators in the process of municipal roadbed and pavement construction. It directly affects the quality control of engineering construction. Therefore, the roadbed compaction test of highway projects is of vital importance. Since the soil adheres to the inner wall of the sampling tube, when the soil is taken out, some soil will stick to the inner wall of the sampling tube, which will cause deviations in subsequent tests.

[0003] Some existing technologies reduce the soil adhering to the inner wall of the sampling barrel by vibrating the sampling barrel, but the vibration may not necessarily remove all the attached soil. Excessive vibration may also damage the sampling barrel. Even if it is cleaned by components such as a scraper, all the adhered soil cannot be quickly removed. In addition, during the process of taking out the sampling barrel, if the soil in the sampling barrel is relatively dry, it is very easy to fall out of the sampling shell, resulting in the need for re-sampling, thereby reducing the sampling efficiency. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a roadbed compaction detection sampling device for highway engineering.

[0005] The present invention adopts the following technical scheme, a roadbed compaction detection sampling device for highway engineering, comprising an upper ring piece and a lower ring piece arranged at the lower side of the upper ring piece, the top of the upper ring piece is fixedly connected to an upper cover, and the upper end of the upper cover is fixedly connected to an air pump, a circular groove is opened on the upper cover, a conical plug rod is movably inserted up and down at the bottom end of the upper ring piece, and a reset spring is fixedly connected between the top end of the conical plug rod and the upper ring piece, and the bottom end of the conical plug rod is movably inserted in the lower ring piece, and also includes:

[0006] An anti-slip mechanism can prevent the soil from sliding during sampling, and the anti-slip mechanism is arranged in the lower ring piece;

[0007] An auxiliary mechanism can completely remove the sample through the air drawn in by the upper cover, and the auxiliary mechanism is arranged in the upper ring sheet;

[0008] And a reverse mechanism is used to enhance the loosening effect of the sample, and the reverse mechanism is arranged in the lower ring sheet.

[0009] As a further description of the above technical solution: the anti-slip mechanism includes an extrusion ring horizontally inserted into the inner wall of the lower ring piece, and two extrusion rings are symmetrically arranged, a lifting rod is movably inserted in the extrusion ring, the bottom end of the lifting rod is slidably arranged on the extrusion ring, an air guide column is arranged on the upper side of the lifting rod, the air guide column is fixedly connected to the upper end of the lower ring piece, the upper ring piece is movably sleeved on the outside of the air guide column, and a conduit is connected between the inner cavity of the air guide column and the air pump.

[0010] As a further description of the above technical solution: the auxiliary mechanism includes a lifting frame 1 that is movably inserted in the bottom end of the upper ring piece up and down, one side of the lifting frame 1 is located in the upper ring piece and is rotatably provided with a lifting frame 2, and the bottom ends of the lifting frame 1 and the lifting frame 2 are extended into the lower ring piece, and the upper ends of the lifting frame 1 and the lifting frame 2 are extended to the upper side of the upper ring piece, the bottom end of the lifting frame 2 is fixedly connected to a lifting plate, the upper end of the lifting plate is fixedly connected to a contact, the lifting plate is slidably arranged in the lower ring piece up and down, a counterweight block is slidably arranged in the lower ring piece up and down, and a pull rope is fixedly connected between the counterweight block and the lifting rod, the lower side of the upper end of the lifting frame 2 is located in the upper ring piece and is fixedly connected to a magnet 1, and the upper end of the lifting frame 1 A magnet is fixedly connected to the upper ring piece on one side, an external tooth is fixedly connected to the lifting frame one, and a gear is meshed with the external tooth on one side, a rotating ball is fixedly connected to one end of the central axis of the gear, and the rotating ball is rotatably arranged in the upper cover, and through holes are opened in the rotating ball from top to bottom, a straight slot is opened on the lifting plate, a ventilation slot is opened on the lower ring piece, and the ventilation slot connects the slide slot where the lifting rod is located with the outer side of the lower ring piece, the bottom end of the lifting plate is located in the ventilation slot, a connecting slot is opened on the inner wall of the straight slot, a connecting slot is connected between the straight slot and the slide slot where the lifting rod is located, and the other end of the connecting slot is connected to the slide slot where another lifting rod is located.

[0011] As a further description of the above technical solution: the reverse mechanism includes a lifting plate, and the lifting plate is arranged on a side close to the air guide column, a squeezing plate is fixedly connected to the bottom end of the lifting plate, a connecting plate is arranged on the lower side of the squeezing plate and slides up and down in the lower ring piece, a lifting ring is fixedly connected to the connecting plate, two lifting rings are arranged, the other lifting ring is fixedly connected to the other lifting plug rod, the close ends of the two lifting rings are fixedly connected with external teeth one, a gear one is meshed and connected between the external teeth on both sides, and the gear one is rotatably arranged in the lower ring piece, a limit rod is horizontally inserted in the connecting plate, and a limit groove is provided on the lifting plug rod.

[0012] As a further description of the above technical solution: one air guide column is provided.

[0013] As a further description of the above technical solution: an annular groove is provided on the upper ring plate, and the annular groove is connected to the inner cavity of the air guide column, and connecting groove three is provided on the lifting frame one and connecting groove three, and the bottom end of connecting groove three is connected to the inner cavity of the upper ring plate.

[0014] As a further description of the above technical solution: the upper and lower sides of one end of the limit rod close to the limit slot are provided with inclined surfaces, and the upper side of one end of the limit rod away from the limit slot is provided with an inclined surface.

[0015] As a further description of the above technical solution: the lifting rod is arranged on the bottom side of the lower ring piece.

[0016] The present invention provides a roadbed compaction detection sampling device for highway engineering by improvement, which has the following improvements and advantages compared with the prior art:

[0017] First, before the upper ring piece rotates clockwise, the gas generated by the vacuum pump presses the lifting rods downward, and then the extrusion rings on both sides are squeezed into the inner cavity of the lower ring piece, thereby preventing the soil in the upper ring piece from falling. When the upper ring piece rotates clockwise, the gas can be ejected from the bottom of the three connecting grooves, and then the soil in the upper and lower ring pieces is squeezed downward. The gas has different effects in different states, and the gas replaces the spring to move the extrusion ring, which can prevent the spring from fatigue.

[0018] Second, before the upper ring piece rotates clockwise, the anti-skid mechanism plays a role in preventing the soil from falling. After the upper ring piece rotates clockwise, the gas will vibrate the anti-skid mechanism, thereby promoting the discharge of the soil in the upper ring piece. The movement of the anti-skid mechanism will make the gas sprayed from the bottom end of the three connecting grooves intermittently stronger, which can further promote the complete fall of the soil in the upper ring piece. The gas and the anti-skid mechanism promote each other.

[0019] Thirdly, the two lifting rods move up and down in opposite directions, which will cause the extrusion rings on both sides to move in opposite directions, thereby making the soil in the lower ring piece more dispersed and more conducive to the falling of the soil in the lower ring piece;

[0020] To sum up, before the upper ring piece rotates clockwise, the gas generated by the vacuum pump presses the lifting and lowering rods downward, and then the extrusion rings on both sides are squeezed into the inner cavity of the lower ring piece, thereby preventing the soil in the upper ring piece from falling. When the upper ring piece rotates clockwise, the gas can be ejected from the three bottom ends of the connecting groove, and then the soil in the upper and lower ring pieces is squeezed downward. The gas has different effects under different conditions, and the extrusion ring is moved by gas instead of the spring to prevent spring fatigue. The gas and the anti-slip mechanism promote each other, and the extrusion rings on both sides move in opposite directions, so that the soil in the lower ring piece can be better squeezed and dispersed, which is more conducive to the falling of the soil in the lower ring piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments:

[0022] Figure 1A schematic diagram of the structure of a roadbed compaction detection sampling device for highway engineering provided by an embodiment of the present invention;

[0023] Figure 2 A three-dimensional cross-sectional view of an upper ring sheet and a lower ring sheet provided in an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of the structure of a reverse mechanism provided by an embodiment of the present invention;

[0025] Figure 4 A schematic diagram of the separation structure of the limit rod and the connection plate provided in an embodiment of the present invention;

[0026] Figure 5 A schematic diagram of the structure of a rotating ball provided by an embodiment of the present invention;

[0027] Figure 6 A schematic diagram of the structure of a tapered plug rod provided in an embodiment of the present invention;

[0028] Figure 7 for Figure 2 The enlarged view of point A in the middle;

[0029] Figure 8 for Figure 2 The enlarged view of point B in the middle;

[0030] Fig. 9 for Figure 2 Enlarged view of point C in the middle.

[0031] In the figure: 1, upper ring piece; 2, lower ring piece; 3, upper cover; 4, vacuum pump; 5, guide tube; 6, circular groove; 7, anti-slip mechanism; 71, extrusion ring; 72, lifting and plugging rod; 73, air guide column; 8, reverse mechanism; 81, lifting plate; 82, extrusion plate; 83, connecting plate; 84, lifting ring; 85, external gear 1; 86, limit groove; 87, limit rod; 88, gear 1; 9, auxiliary mechanism; 91. Lifting frame 1; 92. Lifting frame 2; 93. Contact; 94. Pull rope; 95. Counterweight; 96. Magnet 1; 97. Magnet 2; 98. External tooth 2; 99. Gear 2; 910. Rotating ball; 911. Straight slot; 912. Ventilation slot; 913. Connecting slot 1; 914. Connecting slot 2; 915. Annular slot; 916. Connecting slot 3; 10. Conical plug rod; 11. Return spring. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below with reference to specific diagrams. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0033] See also Figure 1 - Fig. 9 The embodiment of the present invention provides a technical solution: a roadbed compaction detection sampling device for highway engineering, comprising an upper ring piece 1 and a lower ring piece 2 arranged at the lower side of the upper ring piece 1, the upper ring piece 1 is fixedly connected to an upper cover 3 at the top, and an air pump 4 is fixedly connected to the upper end of the upper cover 3, a circular groove 6 is provided on the upper cover 3, a conical plug rod 10 is movably inserted at the bottom end of the upper ring piece 1, and a return spring 11 is fixedly connected between the top end of the conical plug rod 10 and the upper ring piece 1, and the bottom end of the conical plug rod 10 is movably inserted in the lower ring piece 2, and also includes:

[0034] An anti-skid mechanism 7 can prevent the soil from sliding during sampling, and the anti-skid mechanism 7 is arranged in the lower ring piece 2;

[0035] The auxiliary mechanism 9 can completely remove the sample through the air sucked in by the upper cover 3, and the auxiliary mechanism 9 is arranged in the upper ring sheet 1;

[0036] And a reverse mechanism 8 is used to enhance the loosening effect of the sample, and the reverse mechanism 8 is arranged in the lower ring piece 2.

[0037] Specifically, before the upper ring piece 1 rotates clockwise, the gas generated by the vacuum pump 4 presses the lifting rods 72 downward, thereby squeezing the extrusion rings 71 on both sides toward the inner cavity of the lower ring piece 2, thereby preventing the soil in the upper ring piece 1 from falling. When the upper ring piece 1 rotates clockwise, the gas can be ejected from the bottom end of the connecting groove 3 916, thereby squeezing the soil in the upper ring piece 1 and the lower ring piece 2 downward. The gas has different effects in different states, and the gas replaces the spring to move the extrusion ring 71, which can prevent the spring from fatigue.

[0038] Before the upper ring piece 1 rotates clockwise, the anti-skid mechanism 7 plays a role in preventing the soil from falling. After the upper ring piece 1 rotates clockwise, the gas will cause the anti-skid mechanism 7 to vibrate, thereby promoting the discharge of the soil in the upper ring piece 1, and the movement of the anti-skid mechanism 7 will make the gas sprayed from the bottom end of the connecting groove 3 916 intermittently stronger, which can further promote the complete falling of the soil in the upper ring piece 1. The gas and the anti-skid mechanism 7 promote each other, and the extrusion rings 71 on both sides move in opposite directions, which can make the soil in the lower ring piece 2 better squeezed and dispersed, which is more conducive to the falling of the soil in the lower ring piece 2.

[0039] In another embodiment provided by the present invention, the anti-slip mechanism 7 includes an extrusion ring 71 horizontally inserted into the inner wall of the lower ring piece 2, and two extrusion rings 71 are symmetrically arranged, and a lifting rod 72 is movably inserted up and down in the extrusion ring 71, and the bottom end of the lifting rod 72 is slidably arranged on the extrusion ring 71, and an air guide column 73 is arranged on the upper side of the lifting rod 72, and the air guide column 73 is fixedly connected to the upper end of the lower ring piece 2, and the upper ring piece 1 is movably sleeved on the outer side of the air guide column 73, and a conduit 5 is connected between the inner cavity of the air guide column 73 and the vacuum pump 4.

[0040] One air guide column 73 is provided.

[0041] The lifting rod 72 is arranged on the bottom side of the lower ring plate 2 .

[0042] Specifically, before the upper ring piece 1 rotates clockwise, the gas generated by the vacuum pump 4 presses the lifting rods 72 downward, thereby squeezing the extrusion rings 71 on both sides into the inner cavity of the lower ring piece 2, thereby preventing the soil in the upper ring piece 1 from falling. When the upper ring piece 1 rotates clockwise, the gas can be ejected from the bottom end of the connecting groove three 916, thereby squeezing the soil in the upper ring piece 1 and the lower ring piece 2 downward. The gas has different effects under different conditions, and the gas replaces the spring to move the extrusion ring 71, which can prevent spring fatigue.

[0043] In another embodiment provided by the present invention, the auxiliary mechanism 9 includes a lifting frame 91 which is movably inserted in the bottom end of the upper ring piece 1, one side of the lifting frame 91 is located in the upper ring piece 1 and is rotatably provided with a lifting frame 92, and the bottom ends of the lifting frame 91 and the lifting frame 92 are extended into the lower ring piece 2, and the upper ends of the lifting frame 91 and the lifting frame 92 are extended to the upper side of the upper ring piece 1, the bottom end of the lifting frame 92 is fixedly connected with a lifting plate 81, the upper end of the lifting plate 81 is fixedly connected with a contact 93, the lifting plate 81 is slidably arranged in the lower ring piece 2, a counterweight block 95 is slidably arranged in the lower ring piece 2, and a pull rope 94 is fixedly connected between the counterweight block 95 and the lifting plug rod 72, the lower side of the upper end of the lifting frame 92 is located in the upper ring piece 1 and is fixed with a magnet 96, and the upper side of the lifting frame 91 is located in the upper ring piece 1 and is fixed in the upper ring piece 1 It is connected to magnet 2 97, external teeth 2 98 are fixedly connected to lifting frame 1 91, and one side of external teeth 2 98 is meshedly connected to gear 2 99, one end of the central axis of gear 2 99 is fixedly connected to a rotating ball 910, and the rotating ball 910 is rotatably set in the upper cover 3, and a through hole is opened in the rotating ball 910 from top to bottom, a straight slot 911 is opened on the lifting plate 81, a ventilation slot 912 is opened on the lower ring plate 2, and the ventilation slot 912 connects the slide groove where the lifting plug rod 72 is located and the outer side of the lower ring plate 2, the bottom end of the lifting plate 81 is located in the ventilation slot 912, and a connecting slot 1 913 is opened on the inner wall of the straight slot 911, and a connecting slot 2 914 is connected between the straight slot 911 and the slide groove where the lifting plug rod 72 is located, and the other end of the connecting slot 1 913 is connected to the slide groove where another lifting plug rod 72 is located.

[0044] An annular groove 915 is provided on the upper ring piece 1 , and the annular groove 915 is communicated with the inner cavity of the air guide column 73 . A connecting groove 3 916 is provided on both the lifting frame 1 91 and the connecting groove 3 916 , and the bottom end of the connecting groove 3 916 is communicated with the inner cavity of the upper ring piece 1 .

[0045] Specifically, before the upper ring piece 1 rotates clockwise, the anti-skid mechanism 7 plays a role in preventing the soil from falling. After the upper ring piece 1 rotates clockwise, the gas will cause the anti-skid mechanism 7 to vibrate, thereby promoting the discharge of the soil in the upper ring piece 1. The movement of the anti-skid mechanism 7 will make the gas sprayed from the bottom end of the connecting groove 3 916 intermittently stronger, which can further promote the complete falling of the soil in the upper ring piece 1. The gas and the anti-skid mechanism 7 promote each other.

[0046] In another embodiment provided by the present invention, the reversing mechanism 8 includes a lifting plate 81, and the lifting plate 81 is arranged on a side close to the air guide column 73, a squeezing plate 82 is fixedly connected to the bottom end of the lifting plate 81, a connecting plate 83 is arranged on the lower side of the squeezing plate 82 and slides up and down in the lower ring piece 2, a lifting ring 84 is fixedly connected to the connecting plate 83, two lifting rings 84 are arranged, another lifting ring 84 is fixedly connected to the other lifting plug rod 72, the ends close to the two lifting rings 84 are fixedly connected with external teeth 85, gears 88 are meshed and connected between the external teeth 85 on both sides, and the gears 88 are rotatably arranged in the lower ring piece 2, a limit rod 87 is horizontally inserted in the connecting plate 83, and a limit groove 86 is provided on the lifting plug rod 72.

[0047] The upper and lower sides of one end of the limiting rod 87 close to the limiting groove 86 are provided with inclined surfaces, and the upper side of one end of the limiting rod 87 away from the limiting groove 86 is provided with an inclined surface.

[0048] Specifically, the two lifting rods 72 move up and down in opposite directions, which will cause the squeezing rings 71 on both sides to move in opposite directions, thereby enabling the soil in the lower ring piece 2 to be better squeezed and dispersed, making it easier for the soil in the lower ring piece 2 to fall.

[0049] Working principle: when in use, after the bottom end of the conical plug rod 10 is inserted into the lower ring piece 2, the lower ring piece 2 and the upper ring piece 1 are pressed into the soil of the roadbed through other power devices, and the bottom end of the lifting plug rod 72 will move upward due to the squeezing of the soil. At this time, the squeezing rings 71 on both sides are located in the lower ring piece 2. When the sample needs to be taken out, the vacuum pump 4 is started first, and the gas will enter the air guide column 73 through the conduit 5. Then, part of the gas enters the slide groove where the lifting plug rod 72 is located on the lower side of the air guide column 73, and the other part enters the slide groove where the other lifting plug rod 72 is located through the connecting groove 2 914 and the connecting groove 1 913. This causes the lifting plug rods 72 on both sides to be pressed downward, and then the squeezing rings 71 on both sides are squeezed into the inner cavity of the lower ring piece 2, and the soil at the bottom of the inner cavity of the lower ring piece 2 is pressed tightly, thereby preventing the soil in the upper ring piece 1 from falling;

[0050] After that, the upper ring piece 1 and the lower ring piece 2 are moved upward and separated from the soil, and the containing device is placed on the lower side. Then, from the direction of looking up from the bottom, the upper ring piece 1 is rotated 180 degrees clockwise to separate the soil in the upper ring piece 1 and the lower ring piece 2. This is to separate the squeezed soil in the lower ring piece 2 from the normal soil in the upper ring piece 1, so that the subsequent detection is more accurate. The bottom end of the lifting frame 91 will squeeze the contact 93 downward, and the contact 93 will also squeeze the lifting frame 91 upward. At this time, the lifting frame 2 92 and the lifting frame 1 91 are respectively adsorbed with the magnet 1 96 and the magnet 2 97, and the rotating ball 910 rotates so that the inner cavity of the upper ring piece 1 is no longer connected with the upper side air, and the annular groove 915 also connects the connecting groove 3 916 and the inner cavity of the air guide column 73, so that the gas can be ejected from the bottom end of the connecting groove 3 916, thereby squeezing the soil in the upper ring piece 1 downward. When the contact 93 and the lifting plate 81 descend, the straight slot 911 and the ventilation slot 912 The lifting rod 72 is connected to the air outside the lower ring piece 2 by the lifting rod 72, so that the upper end of the sliding groove where the lifting rod 72 is located is connected to the air outside the lower ring piece 2. At this time, the downward impact force of the gas on the lifting rod 72 is weakened, and then the counterweight block 95 will move downward, causing the lifting rod 72 to move upward. Due to the inertia of the lifting rod 72, it will move to the uppermost side. At this time, the lifting rod 72 will block the ventilation groove 912, and the downward pressure of the gas on the lifting rod 72 will increase, causing the lifting rod 72 to move downward quickly, and the extrusion ring 71 will collide with the lower ring piece 2, and the vibration will promote the discharge of the soil in the upper ring piece 1. The lifting rod 72 moves up and down reciprocatingly, which will make the gas intermittently ejected from the bottom end of the connecting groove three 916 become stronger, which can further promote the complete fall of the soil in the upper ring piece 1. When the soil in the upper ring piece 1 is discharged, the upper ring piece 1 is rotated back to restore. At this time, the lifting frame 1 91 and the lifting frame 2 92 are adsorbed, and still maintain their original state, so that the remaining soil in the lower ring piece 2 can also be flushed out by the gas.

[0051] When the lifting plate 81 moves downward, the squeezing plate 82 will press the limiting rod 87 into the limiting groove 86, so that the lifting rod 72 and the connecting plate 83 are connected, and then the connecting groove 1 913 is no longer connected to the connecting groove 2 914, and no gas rushes into the sliding groove where the other lifting rod 72 is located. This makes the two lifting rods 72 move up and down in opposite directions through the transmission of gear 1 88 and outer tooth 1 85, which will make the squeezing rings 71 on both sides move in opposite directions, so that the soil in the lower ring piece 2 can be better squeezed and dispersed, which is more conducive to the falling of the soil in the lower ring piece 2.

[0052] The basic principles, main features and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and the description in the specification are only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A roadbed compaction detection sampling device for highway engineering, comprising an upper ring piece (1) and a lower ring piece (2) arranged on the lower side of the upper ring piece (1), the upper end of the upper ring piece (1) is fixedly connected to an upper cover (3), and the upper end of the upper cover (3) is fixedly connected to an air pump (4), a circular groove (6) is provided on the upper cover (3), a conical plug rod (10) is movably inserted at the bottom end of the upper ring piece (1), and a return spring (11) is fixedly connected between the top end of the conical plug rod (10) and the upper ring piece (1), and the bottom end of the conical plug rod (10) is movably inserted in the lower ring piece (2), characterized in that: Also includes: An anti-slip mechanism (7) can prevent soil from sliding off during sampling, and the anti-slip mechanism (7) is arranged in the lower ring piece (2); An auxiliary mechanism (9) can completely remove the sample through the air sucked in by the upper cover (3), and the auxiliary mechanism (9) is arranged in the upper ring sheet (1); and a reverse mechanism (8) for enhancing the loosening effect of the sample, wherein the reverse mechanism (8) is arranged in the lower ring sheet (2).

2. A roadbed compaction detection sampling device for highway engineering according to claim 1, characterized in that: The anti-slip mechanism (7) comprises an extrusion ring (71) horizontally inserted into the inner wall of the lower ring piece (2), and two extrusion rings (71) are symmetrically provided. A lifting rod (72) is movably inserted in the extrusion ring (71) up and down, and the bottom end of the lifting rod (72) is slidably arranged on the extrusion ring (71). An air guide column (73) is provided on the upper side of the lifting rod (72). The air guide column (73) is fixedly connected to the upper end of the lower ring piece (2). The upper ring piece (1) is movably sleeved on the outer side of the air guide column (73), and a conduit (5) is connected between the inner cavity of the air guide column (73) and the air pump (4).

3. The sampling device for detecting the compactness of roadbed used in highway engineering according to claim 1, characterized in that: The auxiliary mechanism (9) comprises a lifting frame (91) which is movably inserted at the bottom end of the upper ring piece (1) in an up-and-down manner, a lifting frame (92) is rotatably provided on one side of the lifting frame (91) in the upper ring piece (1), and the bottom ends of the lifting frame (91) and the lifting frame (92) extend into the lower ring piece (2), the top ends of the lifting frame (91) and the lifting frame (92) extend to the upper side of the upper ring piece (1), and the bottom end of the lifting frame (92) is fixedly connected to a lifting plate (81). The upper end of the lifting plate (81) is fixedly connected with a contact (93), the lifting plate (81) is slidably arranged in the lower ring piece (2), a counterweight block (95) is slidably arranged in the lower ring piece (2), and a pull rope (94) is fixedly connected between the counterweight block (95) and the lifting rod (72), the lower end of the lifting frame (92) is located in the upper ring piece (1) and is fixedly connected with a magnet (96), and the upper end of the lifting frame (91) is located in the upper ring piece (1) and is fixedly connected with a magnet (96). (97), the lifting frame (91) is fixedly connected with an outer tooth (98), and one side of the outer tooth (98) is meshedly connected with a gear (99), one end of the central axis of the gear (99) is fixedly connected with a rotating ball (910), and the rotating ball (910) is rotatably arranged in the upper cover (3), and a through hole is opened in the rotating ball (910) from top to bottom, a straight slot (911) is opened on the lifting plate (81), and a ventilation slot (911) is opened on the lower ring plate (2). 12), and the ventilation groove (912) connects the sliding groove where the lifting plug rod (72) is located and the outer side of the lower ring plate (2), the bottom end of the lifting plate (81) is located in the ventilation groove (912), the inner wall of the straight groove opening (911) is provided with a connecting groove 1 (913), the straight groove opening (911) and the sliding groove where the lifting plug rod (72) is located are connected by a connecting groove 2 (914), and the other end of the connecting groove 1 (913) is connected to the sliding groove where another lifting plug rod (72) is located.

4. A roadbed compaction detection sampling device for highway engineering according to claim 3, characterized in that: The reverse mechanism (8) comprises a lifting plate (81), and the lifting plate (81) is arranged on a side close to the air guide column (73). The bottom end of the lifting plate (81) is fixedly connected with a squeeze plate (82). The lower side of the squeeze plate (82) is provided with a connecting plate (83) which is located in the lower ring sheet (2) and slides up and down. The connecting plate (83) is fixedly connected with a lifting ring (84). Two lifting rings (84) are provided. The other lifting ring (84) is fixedly connected to the other lifting plug rod (72). The two lifting rings (84) are fixedly connected with an external tooth one (85) at one end close to each other. A gear one (88) is meshedly connected between the external teeth one (85) on both sides, and the gear one (88) is rotatably arranged in the lower ring sheet (2). A limit rod (87) is horizontally inserted in the connecting plate (83), and a limit groove (86) is provided on the lifting plug rod (72).

5. The sampling device for detecting roadbed compaction for highway engineering according to claim 2, characterized in that: The air guide column (73) is provided with one.

6. The sampling device for detecting roadbed compaction for highway engineering according to claim 3, characterized in that: The upper ring piece (1) is provided with an annular groove (915), and the annular groove (915) is communicated with the inner cavity of the air guide column (73). The lifting frame (91) and the connecting groove (916) are both provided with a connecting groove (916), and the bottom end of the connecting groove (916) is communicated with the inner cavity of the upper ring piece (1).

7. A roadbed compaction detection sampling device for highway engineering according to claim 4, characterized in that: The upper and lower sides of one end of the limiting rod (87) close to the limiting groove (86) are provided with inclined surfaces, and the upper side of one end of the limiting rod (87) away from the limiting groove (86) is provided with an inclined surface.

8. The sampling device for detecting roadbed compaction for highway engineering according to claim 2, characterized in that: The lifting and lowering rod (72) is arranged on the bottom side of the lower ring piece (2).

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