Road detection sampling device

Abstract

The present invention provides a road detection sampling device, wherein the arc knife is composed of an outer arc plate, an inner arc plate, a first side plate, a second side plate and a sac in the middle. In a non-operating state, the arc knife is in a folded state, that is, the sac is deflated, the first side plate and the second side plate are unfolded outward, and the inner arc plate is fitted with the outer arc plate. At this time, the overall thickness of the arc knife is relatively small, so the required depth of the arc accommodating groove is relatively shallow, which has little effect on the structural strength of the drill tube. After drilling to the required depth, the medium is filled into the sac through a filling and discharging component, so that the arc knife is in an operating state. At this time, the sac swells, the inner arc plate is propped open, the first side plate and the second side plate rotate inward, and the first rotating shaft and the second rotating shaft are clamped into the first clamping groove and the second clamping groove at both ends of the outer arc plate, so that the outer arc plate, the inner arc plate, the first side plate and the second side plate are clamped or connected to each other and supported by the sac, thereby generating sufficient structural strength.

Description

Technical Field

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

[0002] The road inspection sampling device is an important equipment used for sampling and testing of pavement materials during the construction of highways or urban roads. It refers to the inspection of the quality of the construction road. It is mainly used to evaluate the quality and performance of the road surface, ensure that the road project meets the design and safety standards, ensure that the strength and quality of the road can meet the construction requirements and traffic requirements, and improve the safety and durability of the road.

[0003] Existing sampling devices are usually motor-driven drill tubes to drill columnar samples. However, when the drill tube carries the sample soil upward during sampling, the stickiness between the soils can easily cause the sample soil in the drill tube to fall off, resulting in incomplete sampling and affecting sampling accuracy.

[0004] In order to solve the above problem, some existing sampling devices install an arc knife on the inner side of the drill tube near the bottom. After drilling to the required sampling depth, the drill tube is kept rotating while driving the arc knife to rotate inward to cut off the soil to keep the sample intact.

[0005] However, in order to make the arc cutter have sufficient strength, the thickness of the arc cutter in the radial direction is usually large. In order to accommodate the arc cutter, a deeper groove needs to be opened on the inner wall of the drill barrel to accommodate the arc cutter, and then the wall thickness of the drill barrel is made thinner at this point, which has a greater impact on the structural strength of the drill barrel, thereby greatly shortening the service life of the drill barrel. Summary of the invention

[0006] The present invention provides a road detection sampling device, aiming to solve the technical problem in the prior art that a deeper accommodating groove needs to be provided on the inner wall of a drill tube in order to accommodate an arc-shaped cutter, which has a significant impact on the structural strength of the drill tube.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a road detection sampling device, including a main machine, a drill barrel, an arc-shaped knife and a bottom cutting drive assembly, the drill barrel is connected to the main machine and is used to drill samples under the drive of the main machine, an arc-shaped accommodating groove is provided on the inner wall of the lower part of the drill barrel, and a first guide groove and a second guide groove are respectively provided at both ends of the arc-shaped accommodating groove; the arc-shaped knife is arranged in the arc-shaped accommodating groove and is rotatably connected to the drill barrel; the power output end of the bottom cutting drive assembly is connected to the arc-shaped knife and is used to drive the arc-shaped knife to rotate.

[0008] Wherein, the arc-shaped knife comprises:

[0009] An outer arc-shaped plate is arranged in the arc-shaped receiving groove and is suitable for being fitted with the inner wall of the arc-shaped receiving groove. The two ends of the outer arc-shaped plate are respectively provided with a first clamping groove and a second clamping groove;

[0010] An inner arc plate, arranged inside the outer arc plate;

[0011] A first side plate, one end of which is elastically rotatably connected to one end of the inner arc-shaped plate, and the other end of which is provided with a first rotating shaft; the first rotating shaft is arranged in the first guide slide groove, and is suitable for sliding along the first guide slide groove to the first clamping groove and then rotating with the drill pipe;

[0012] A second side plate, one end of which is elastically rotatably connected to the other end of the inner arc-shaped plate, and a second rotating shaft is provided at the other end of the second side plate; the second guide slide groove has avoidance grooves on both upper and lower sides, and the second rotating shaft is provided in the second guide slide groove, suitable for sliding along the second guide slide groove into the second clamping groove, and the avoidance groove is connected with the second guide slide groove and the inner side of the drill tube side wall to avoid the second rotating shaft;

[0013] A bladder body is disposed between the outer arc plate and the inner arc plate and connected to the outer arc plate, wherein the bladder body is suitable for being filled with a medium to expand and support the inner arc plate;

[0014] A reset member, used for driving the outer arc plate to reset; and

[0015] The filling and exhausting assembly is connected to the drill pipe and is used to fill the medium into the bladder or to extract the medium from the bladder.

[0016] In a possible implementation of the road detection sampling device provided by the present invention, a torsion spring is provided between the first side plate and the inner arc-shaped plate and between the second side plate and the arc-shaped inner plate.

[0017] In a possible implementation of the road detection sampling device provided by the present invention, the reset member is a magnetic sheet, which is embedded in the outer arc plate and is suitable for attracting the side wall of the drill tube to drive the outer arc plate to reset.

[0018] In a possible implementation of the road detection sampling device provided by the present invention, the filling and discharging assembly includes:

[0019] A cylinder body, arranged on the upper side of the drill tube, connected to the drill tube, filled with a medium, and connected to the capsule body through a pipeline;

[0020] A push member, comprising a piston and a push-pull rod, wherein the piston is slidably disposed in the cylinder body, one end of the push-pull rod is connected to the piston, and the other end extends out of the cylinder body; and

[0021] The filling and discharging driving assembly is connected to the drill pipe, and the power output end is connected to the push-pull rod, and is used to push and pull the piston to fill the medium in the cylinder into the bladder, or to draw the medium in the bladder into the cylinder.

[0022] In a possible implementation of the road detection sampling device provided by the present invention, the filling and discharging drive assembly is one of an electric push rod, a pneumatic cylinder and a hydraulic cylinder.

[0023] In a possible implementation of the road detection sampling device provided by the present invention, a groove is provided on the outer wall of the drill tube, and the bottom cutting drive assembly includes:

[0024] An inner cylinder is sleeved in the drill cylinder and rotatably matched with the drill cylinder, and the lower end of the inner cylinder is arranged on the upper side of the arc-shaped receiving groove;

[0025] A winding assembly is arranged on the upper side of the drill tube and connected to the drill tube, wherein a winding spring is arranged in the winding assembly;

[0026] A connecting rope, one end of which is connected to the coil spring in the winding assembly, and the other end of which passes through the groove, penetrates into the inner side of the drill tube from the connection between the outer arc plate and the first side plate, passes through the outer surface of the outer arc plate, passes out from the end where the outer arc plate is connected to the second side plate, and is connected to the inner tube;

[0027] The bottom cutting driving mechanism is arranged on the upper side of the drill tube and connected to the drill tube. The power output end is connected to the inner tube and is used to drive the inner tube to rotate.

[0028] In a possible implementation of the road detection sampling device provided by the present invention, an arc groove is provided at the top of the drill tube, a force-bearing rod is provided at the top of the inner tube, and the force-bearing rod passes through the drill tube from the arc groove.

[0029] The bottom cutting driving mechanism comprises:

[0030] a hollow shaft drive assembly connected to the drill barrel; and

[0031] The rocker arm is arranged transversely, one end of which is connected to the power output end of the hollow shaft driving assembly, and the other end is suitable for connecting to the force-bearing rod.

[0032] In a possible implementation of the road detection sampling device provided by the present invention, the inner cylinder is composed of two half cylinders, a transverse gear rod is provided on the top of the force-bearing rod, the rocker arm is provided at the lower side of the gear rod, and the gear rod is suitable for being hung on the rocker arm.

[0033] The road detection sampling device also includes a pushing assembly, and the pushing assembly includes:

[0034] A push drive assembly connected to the host; and

[0035] The push rod is vertically arranged and connected to the power output end of the push drive assembly, and is suitable for moving up and down the push drive assembly. The push rod is suitable for passing through the arc groove to push the inner cylinder under the drive of the push drive assembly.

[0036] In a possible implementation of the road detection sampling device provided by the present invention, the host includes:

[0037] Base;

[0038] A lifting drive assembly is arranged on the upper side of the base and connected to the base;

[0039] A lifting frame connected to the power output end of the lifting drive assembly and adapted to move up and down under the drive of the lifting drive assembly; and

[0040] The sampling drive assembly is connected to the lifting frame, and the power output end of the sampling drive assembly is connected to the drill barrel to drive the drill barrel to rotate.

[0041] In a possible implementation of the road detection sampling device provided by the present invention, the medium is a non-Newtonian fluid.

[0042] The beneficial effects of the road detection sampling device provided by the present invention are as follows: compared with the prior art, the road detection sampling device provided by the present invention, the arc knife is composed of an outer arc plate, an inner arc plate, a first side plate, a second side plate and a middle capsule; in a non-operating state, the arc knife is in a folded state, that is, the capsule is deflated, the first side plate and the second side plate are unfolded outward, the first rotating shaft and the second rotating shaft are away from the outer arc plate, and the inner arc plate is fitted with the outer arc plate; at this time, the overall thickness of the arc knife is relatively small, and therefore, the required depth of the arc accommodating groove is relatively shallow, which has little effect on the structural strength of the drill tube; after drilling to the required depth, the medium is filled into the capsule through the filling and discharging assembly, so that the arc knife can be in an operating state, at which time the capsule swells, the inner arc plate is propped open, and the first side plate and the second side plate overcome the The outer arc plate, the inner arc plate, the first side plate and the second side plate are clamped or connected to each other and supported by the capsule to generate sufficient structural strength to cut and cut off the soil; that is, the road detection sampling device provided by the present invention can open the inner arc plate by filling the capsule with a medium, so that the outer arc plate, the inner arc plate, the first side plate and the second side plate are clamped or connected to each other and supported by the capsule to generate sufficient structural strength; and when the arc knife is in a non-operating state, the medium in the capsule can be extracted to put the arc knife in a folded state to reduce the thickness. Therefore, the required depth of the arc accommodating groove is shallow, which has little effect on the structural strength of the drill tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A schematic diagram of the three-dimensional structure of a road detection sampling device provided in an embodiment of the present invention;

[0044] Figure 2 Schematic diagram of the three-dimensional structure of the drill tube in the road detection sampling device provided by the embodiment of the present invention Figure 1 ;

[0045] Figure 3 for Figure 2 A magnified view of part A in FIG.

[0046] Figure 4 Schematic diagram of the three-dimensional structure of the drill tube in the road detection sampling device provided by the embodiment of the present invention Figure 2 ;

[0047] Figure 5 A schematic diagram of the three-dimensional structure of the curved knife in the road detection sampling device provided by an embodiment of the present invention when it is in operation;

[0048] Figure 6 A schematic cross-sectional view of a drill tube in a road detection sampling device provided by an embodiment of the present invention;

[0049] Figure 7 The arc knife in the road detection sampling device provided by the embodiment of the present invention is in the working state along the Figure 6 Schematic diagram of the cross-sectional structure along the AA line;

[0050] Figure 8 for Figure 7 A magnified view of part B in FIG.

[0051] Fig. 9 for Figure 8 The enlarged view of the C part in FIG.

[0052] Fig.10 The arc knife in the road detection sampling device provided by the embodiment of the present invention is in a non-operating state along the Figure 6 Schematic diagram of the cross-sectional structure along the AA line;

[0053] Fig.11 for Fig.10 The enlarged view of the D part in FIG.

[0054] Fig.12 for Fig.11 The enlarged view of part E in FIG.

[0055] Description of reference numerals:

[0056] 10. Drill barrel; 11. First guide chute; 12. Second guide chute; 13. Avoidance groove; 14. Arc groove;

[0057] 21. outer arc plate; 22. inner arc plate; 23. first side plate; 231. first rotating shaft;

[0058] 24. second side plate; 241. second rotating shaft; 25. capsule; 26. reset member; 27. torsion spring;

[0059] 281, cylinder body; 282, push member; 283, charging and discharging drive assembly; 31, winding assembly;

[0060] 32. connecting rope; 33. half cylinder; 34. force rod; 341. gear lever; 351. hollow shaft drive assembly;

[0061] 352, rocker arm; 41, push drive assembly; 42, push rod; 51, base;

[0062] 52. Lifting drive assembly; 53. Lifting frame; 54. Sampling drive assembly. DETAILED DESCRIPTION

[0063] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0064] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0065] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0066] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the application. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0067] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0068] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, and the spatially relative descriptions used here are interpreted accordingly.

[0069] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0070] Please also read Figures 1 to 12The road detection sampling device provided by the present invention is now described. The road detection sampling device comprises a main machine, a drill tube 10, an arc-shaped knife and a bottom cutting drive assembly. The drill tube 10 is connected to the main machine and is used to drill samples under the drive of the main machine. An arc-shaped receiving groove is provided on the inner wall of the lower part of the drill tube 10. A first guide groove 11 and a second guide groove 12 are provided at both ends of the arc-shaped receiving groove. The arc-shaped knife is provided in the arc-shaped receiving groove and is rotatably connected to the drill tube 10. The power output end of the bottom cutting drive assembly is connected to the arc-shaped knife and is used to drive the arc-shaped knife to rotate.

[0071] The arc knife includes an outer arc plate 21, an inner arc plate 22, a first side plate 23, a second side plate 24, a capsule 25 and a reset member 26. The outer arc plate 21 is arranged in the arc accommodating groove and is suitable for fitting with the inner wall of the arc accommodating groove. The two ends of the outer arc plate 21 are respectively provided with a first clamping groove and a second clamping groove; the inner arc plate 22 is arranged on the inner side of the outer arc plate 21; one end of the first side plate 23 is elastically rotatably connected to one end of the inner arc plate 22, and the other end is provided with a first rotating shaft 231; the first rotating shaft 231 is arranged in the first guide groove 11, and is suitable for sliding along the first guide groove 11 to the first clamping groove and then rotating with the drill tube 10; one end of the second side plate 24 is elastically rotatably connected to the other end of the inner arc plate 22, and the second A second rotating shaft 241 is provided at the other end of the side plate 24; the second guide groove 12 is provided with avoidance grooves 13 on the upper and lower sides, and the second rotating shaft 241 is arranged in the second guide groove 12, suitable for sliding along the second guide groove 12 to the second clamping groove, and the avoidance groove 13 is connected with the second guide groove 12 and the inner side of the side wall of the drill tube 10 to avoid the second rotating shaft 241; the capsule 25 is arranged between the outer arc plate 21 and the inner arc plate 22, and is connected to the outer arc plate 21. The capsule 25 is suitable for filling with medium to expand and support the inner arc plate 22; the reset member 26 is used to drive the outer arc plate 21 to reset; the filling and discharging assembly is connected to the drill tube 10, and is used to fill the medium into the capsule 25 or extract the medium in the capsule 25.

[0072] Specifically, the first guide groove 11 and the second guide groove 12 are both T-shaped arc grooves 14 .

[0073] like Figures 7 to 12As shown, it should be noted that, in the non-operating state, the arc knife is in a folded state, that is, the capsule 25 is deflated, the first side plate 23 and the second side plate 24 are expanded outward, the first rotating shaft 231 and the second rotating shaft 241 are away from the outer arc plate 21, and the inner arc plate 22 is in contact with the outer arc plate 21. At this time, the overall thickness of the arc knife is small, so the required depth of the arc accommodating groove is shallow, which has little effect on the structural strength of the drill tube 10; after drilling to the required depth, the filling and discharging assembly is used to fill the capsule 25. By filling the medium, the arc knife can be put into operation state. At this time, the capsule 25 swells and opens the inner arc plate 22. The first side plate 23 and the second side plate 24 overcome the elastic force and rotate inward. The first rotating shaft 231 and the second rotating shaft 241 are inserted into the first and second slots at both ends of the outer arc plate 21, so that the outer arc plate 21, the inner arc plate 22, the first side plate 23, and the second side plate 24 are mutually engaged or connected and supported by the capsule 25, thereby generating sufficient structural strength to cut and cut off the soil.

[0074] It should be noted that the bladder 25 is a non-elastic bladder 25 , which can effectively support the inner arc plate 22 after being filled with a medium.

[0075] The beneficial effects of the road detection sampling device provided by the present invention are as follows: compared with the prior art, the road detection sampling device provided by the present invention can expand the inner arc plate 22 by filling the medium into the capsule 25, so that the outer arc plate 21, the inner arc plate 22, the first side plate 23, and the second side plate 24 are mutually clamped or connected and supported by the capsule 25 to generate sufficient structural strength; and when the arc knife is in a non-operating state, the medium in the capsule 25 can be extracted to put the arc knife in a folded state to reduce the thickness, so the required depth of the arc accommodating groove is shallow, which has little effect on the structural strength of the drill tube 10.

[0076] like Fig. 9 and Fig.12 As shown, in a specific implementation of the road detection sampling device provided by an embodiment of the present invention, torsion springs 27 are provided between the first side plate 23 and the inner arc-shaped plate 22 and between the second side plate 24 and the arc-shaped inner plate.

[0077] Specifically, the first side plate 23 and the second side plate 24 are both hinged to the inner arc-shaped plate 22, and the torsion spring 27 is sleeved on the rotating shaft at the hinge.

[0078] like Figure 5 As shown, in a specific implementation of the road detection sampling device provided by an embodiment of the present invention, the reset member 26 is a magnetic sheet, which is embedded in the outer arc plate 21 and is suitable for attracting the side wall of the drill tube 10 to drive the outer arc plate 21 to reset.

[0079] Specifically, the outer arc plate 21 is automatically reset by the magnetic force of the magnetic sheet, and drives the inner arc plate 22, the first side plate 23 and the second side plate 24 to reset.

[0080] In addition, the reset member 26 may also be an element such as an elastic rope that can provide a pulling force to pull the outer arc plate 21 to reset.

[0081] like Figure 4 As shown, in a specific implementation of the road detection sampling device provided by an embodiment of the present invention, the filling and discharging assembly includes a cylinder body 281, a push piece 282 and a filling and discharging drive assembly 283. The cylinder body 281 is arranged on the upper side of the drill barrel 10, connected to the drill barrel 10, filled with a medium inside, and connected to the capsule 25 through a pipeline; the push piece 282 includes a piston and a push-pull rod, the piston is slidably arranged in the cylinder body 281, one end of the push-pull rod is connected to the piston, and the other end extends out of the cylinder body 281; the filling and discharging drive assembly 283 is connected to the drill barrel 10, and the power output end is connected to the push-pull rod, which is used to push and pull the piston to fill the medium in the cylinder body 281 into the capsule 25, or to draw the medium in the capsule 25 into the cylinder body 281.

[0082] Specifically, Figure 4 As shown, in a specific implementation of the road detection sampling device provided in an embodiment of the present invention, the filling and discharging drive assembly 283 is one of an electric push rod, a pneumatic cylinder and a hydraulic cylinder.

[0083] Preferably, the charging and discharging drive assembly 283 is an electric push rod, which has a more compact structure and requires a smaller installation area.

[0084] Furthermore, a battery is installed on the top of the drill rod or drill barrel 10 as a power source.

[0085] like Figure 4 , Figure 7 and Figure 8 As shown, in a specific implementation of the road detection sampling device provided by an embodiment of the present invention, a groove is opened on the outer wall of the drill barrel 10, and the bottom cutting drive component includes an inner barrel, a winding component 31, a connecting rope 32 and a bottom cutting drive mechanism. The inner barrel is sleeved in the drill barrel 10 and rotates with the drill barrel 10, and the lower end of the inner barrel is arranged on the upper side of the arc-shaped accommodating groove; the winding component 31 is arranged on the upper side of the drill barrel 10 and connected to the drill barrel 10, and a coil spring is arranged in the winding component 31; one end of the connecting rope 32 is connected to the coil spring in the winding component 31, and the other end passes through the groove from the connection between the outer arc plate 21 and the first side plate 23 to the inner side of the drill barrel 10, and passes through the outer surface of the outer arc plate 21, and passes through the end connected to the second side plate 24 of the outer arc plate 21, and is connected to the inner barrel; the bottom cutting drive mechanism is arranged on the upper side of the drill barrel 10, connected to the drill barrel 10, and the power output end is connected to the inner barrel to drive the inner barrel to rotate.

[0086] It should be noted that after drilling to the required depth, the medium is filled into the capsule 25 to put the arc knife in an operating state; then the bottom cutting drive mechanism drives the inner cylinder to rotate toward the side away from the arc knife, pulls the connecting rope 32, and applies pressure to the arc knife inward through the connecting rope 32, so that the arc knife rotates inward with the first rotating shaft 231 as the axis, cuts the lower soil, and separates the lower soil from the sample; after the cutting is completed, the inner cylinder is reversed and reset, the connecting rope 32 is retracted by the winding assembly 31, and the outer arc plate 21 is reversed and reset under the suction of the magnetic sheet, thereby driving the arc knife to reset as a whole; thereafter, the piston is pulled by the filling and discharging drive assembly 283 to draw the medium in the capsule 25 back into the cylinder 281, so that the arc knife returns to a non-operating state and is stored in the arc receiving groove.

[0087] like Figure 1 and Figure 4 As shown, in a specific implementation of the road detection sampling device provided by an embodiment of the present invention, an arc groove 14 is opened on the top of the drill tube 10, and a force-bearing rod 34 is provided on the top of the inner tube, and the force-bearing rod 34 passes through the drill tube 10 from the arc groove 14.

[0088] The bottom cutting drive mechanism includes a hollow shaft drive assembly 351 and a rocker arm 352. The hollow shaft drive assembly 351 is connected to the drill tube 10. The rocker arm 352 is arranged horizontally, one end of which is connected to the power output end of the hollow shaft drive assembly 351, and the other end is suitable for connecting to the force-bearing rod 34.

[0089] Specifically, the drill pipe of the drill tube 10 passes through the hollow shaft drive assembly 351. The hollow shaft drive assembly 351 is a hollow shaft motor, or a combination of a motor and a hollow shaft reducer.

[0090] like Figure 1 , Figure 4 and Figure 7 As shown, in a specific implementation of the road detection sampling device provided by an embodiment of the present invention, the inner cylinder is composed of two half cylinders 33, a transverse stopper 341 is provided on the top of the force-bearing rod 34, a rocker arm 352 is provided on the lower side of the stopper 341, and the stopper 341 is suitable for hanging on the rocker arm 352 to prevent the inner cylinder from sliding downward and falling off. Specifically, only one side of the stopper 341 extends out of the force-bearing rod 34.

[0091] The road detection sampling device also includes a push assembly, which includes a push drive assembly 41 and a push rod 42. The push drive assembly 41 is connected to the host; the push rod 42 is vertically arranged and connected to the power output end of the push drive assembly 41, suitable for moving up and down in the push drive assembly 41, and the push rod 42 is suitable for passing through the arc groove 14 to push the inner cylinder under the drive of the push drive assembly 41. The push drive assembly 41 is a cylinder, an electric push rod or a hydraulic cylinder.

[0092] Specifically, Figure 1As shown, in a specific implementation of the road detection sampling device provided by an embodiment of the present invention, the main machine includes a base 51, a lifting drive assembly 52, a lifting frame 53, and a sampling drive assembly 54. The lifting drive assembly 52 is arranged on the upper side of the base 51 and is connected to the base 51; the lifting frame 53 is connected to the power output end of the lifting drive assembly 52, and is suitable for moving up and down under the drive of the lifting drive assembly 52; the sampling drive assembly 54 is connected to the lifting frame 53, and the power output end of the sampling drive assembly 54 is connected to the drill barrel 10, which is used to drive the drill barrel 10 to rotate; the sampling drive assembly 54 is a motor or a combination of a motor and a reducer.

[0093] It should be noted that the sample is usually tightly combined with the drill tube 10, which makes it difficult to remove. In the prior art, vibration or auger drilling is usually used to break the sample and remove it, but this will lose soil layer information. In this embodiment, after drilling is completed, the hollow shaft driving assembly 351 drives the rocker arm 352 to rotate, pushes the force-bearing rod 34, and causes the inner cylinder to rotate, thereby driving the arc knife to rotate, so that the sample is separated from the lower soil; thereafter, the hollow shaft driving assembly 351 drives the rocker arm 352 to rotate in the direction, pushes the force-bearing rod 34 and the inner cylinder to reset, at this time, the rocker arm 352 is on the side where there is no gear lever 341 and the force-bearing rod 34, and will not prevent the inner cylinder from moving downward; at this time, the lifting driving assembly 52 drives the drill tube 10 to move up to a preset position, and aligns the arc groove 14 on the drill tube 10 with the push rod 42, and the push driving assembly 41 drives the push rod 42 to extend, and pushes the inner cylinder out of the drill tube 10, and the inner cylinder is composed of two half cylinders 33, therefore, after the inner cylinder is taken out, the two half cylinders 33 are separated, and the sample can be completely taken out, and the soil layer information is effectively retained.

[0094] like Figure 1 and Figure 2 As shown, in a specific implementation of the road detection sampling device provided in an embodiment of the present invention, the medium is a non-Newtonian fluid.

[0095] It should be noted that when the curved knife is subjected to a large impact, the internal non-Newtonian fluid solidifies instantly due to the instantaneous impact force, so that the curved knife as a whole has a higher strength at this time, effectively preventing the curved knife from bending and deforming.

[0096] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A road detection sampling device, characterized in that: It comprises a main machine, a drill tube, an arc-shaped knife and a bottom cutting drive assembly, wherein the drill tube is connected to the main machine and is used to drill samples under the drive of the main machine, an arc-shaped receiving groove is provided on the inner wall of the lower part of the drill tube, and a first guide groove and a second guide groove are respectively provided at both ends of the arc-shaped receiving groove; the arc-shaped knife is arranged in the arc-shaped receiving groove and is rotatably connected to the drill tube; The power output end of the bottom cutting drive assembly is connected to the arc-shaped knife to drive the arc-shaped knife to rotate; Wherein, the arc-shaped knife comprises: An outer arc-shaped plate is arranged in the arc-shaped receiving groove and is suitable for being fitted with the inner wall of the arc-shaped receiving groove. The two ends of the outer arc-shaped plate are respectively provided with a first clamping groove and a second clamping groove; An inner arc plate, arranged inside the outer arc plate; A first side plate, one end of which is elastically rotatably connected to one end of the inner arc-shaped plate, and the other end of which is provided with a first rotating shaft; the first rotating shaft is arranged in the first guide slide groove, and is suitable for sliding along the first guide slide groove to the first clamping groove and then rotating with the drill pipe; A second side plate, one end of which is elastically rotatably connected to the other end of the inner arc-shaped plate, and a second rotating shaft is provided at the other end of the second side plate; the second guide slide groove has avoidance grooves on both upper and lower sides, and the second rotating shaft is provided in the second guide slide groove, suitable for sliding along the second guide slide groove into the second clamping groove, and the avoidance groove is connected with the second guide slide groove and the inner side of the drill tube side wall to avoid the second rotating shaft; A bladder body is disposed between the outer arc plate and the inner arc plate and connected to the outer arc plate, wherein the bladder body is suitable for being filled with a medium to expand and support the inner arc plate; A reset member, used for driving the outer arc-shaped plate to reset; and The filling and exhausting assembly is connected to the drill pipe and is used to fill the medium into the bladder or to extract the medium from the bladder.

2. The road detection sampling device as claimed in claim 1, characterized in that: Torsion springs are provided between the first side plate and the inner arc plate and between the second side plate and the inner arc plate.

3. The road detection sampling device according to claim 1, characterized in that: The reset member is a magnetic sheet, which is embedded in the outer arc plate and is suitable for attracting the side wall of the drill tube to drive the outer arc plate to reset.

4. The road detection sampling device according to claim 1, characterized in that: The filling and discharging assembly comprises: A cylinder body, arranged on the upper side of the drill tube, connected to the drill tube, filled with a medium, and connected to the capsule through a pipeline; A push member, comprising a piston and a push-pull rod, wherein the piston is slidably disposed in the cylinder body, one end of the push-pull rod is connected to the piston, and the other end extends out of the cylinder body; and The filling and discharging driving assembly is connected to the drill pipe, and the power output end is connected to the push-pull rod, and is used to push and pull the piston to fill the medium in the cylinder into the bladder, or to draw the medium in the bladder into the cylinder.

5. The road detection sampling device as claimed in claim 4, characterized in that: The charging and discharging driving component is one of an electric push rod, a pneumatic cylinder and a hydraulic cylinder.

6. The road detection sampling device according to claim 1, characterized in that: A groove is provided on the outer wall of the drill tube, and the bottom cutting drive assembly comprises: An inner cylinder is sleeved in the drill cylinder and rotatably matched with the drill cylinder, and the lower end of the inner cylinder is arranged on the upper side of the arc-shaped receiving groove; A winding assembly is arranged on the upper side of the drill tube and connected to the drill tube, wherein a winding spring is arranged in the winding assembly; A connecting rope, one end of which is connected to the coil spring in the winding assembly, and the other end of which passes through the groove, penetrates into the inner side of the drill tube from the connection between the outer arc plate and the first side plate, passes through the outer surface of the outer arc plate, passes out from the end where the outer arc plate is connected to the second side plate, and is connected to the inner tube; The bottom cutting driving mechanism is arranged on the upper side of the drill tube and connected to the drill tube. The power output end is connected to the inner tube and is used to drive the inner tube to rotate.

7. The road detection sampling device as claimed in claim 6, characterized in that: The top of the drill tube is provided with an arc groove, the top of the inner tube is provided with a force-bearing rod, and the force-bearing rod passes through the drill tube from the arc groove; The bottom cutting driving mechanism comprises: a hollow shaft drive assembly connected to the drill barrel; and The rocker arm is arranged transversely, one end of which is connected to the power output end of the hollow shaft driving assembly, and the other end is suitable for connecting to the force-bearing rod.

8. The road detection sampling device as claimed in claim 7, characterized in that: The inner cylinder is composed of two half cylinders, a transverse lever is provided on the top of the force-bearing rod, the rocker arm is provided at the lower side of the lever, and the lever is suitable for being hung on the rocker arm; The road detection sampling device also includes a pushing assembly, and the pushing assembly includes: A push drive assembly connected to the host; and The push rod is vertically arranged and connected to the power output end of the push drive assembly, and is suitable for moving up and down the push drive assembly. The push rod is suitable for passing through the arc groove to push the inner cylinder under the drive of the push drive assembly.

9. The road detection sampling device according to claim 1, characterized in that: The host comprises: Base; A lifting drive assembly is arranged on the upper side of the base and connected to the base; A lifting frame connected to the power output end of the lifting drive assembly and adapted to move up and down under the drive of the lifting drive assembly; and The sampling drive assembly is connected to the lifting frame, and the power output end of the sampling drive assembly is connected to the drill barrel to drive the drill barrel to rotate.

10. The road detection sampling device according to any one of claims 1 to 9, characterized in that: The medium is a non-Newtonian fluid.

Images