Geotechnical sampling device for geotechnical engineering investigation

Abstract

The invention relates to the technical field of geotechnical engineering investigation, in particular to a geotechnical sampling device for geotechnical engineering investigation, which comprises a frame, a rotating assembly and a drilling assembly, the lower end of the rotating assembly is rotatably arranged on the frame; the drilling assembly is fixedly arranged on the rotating assembly and is driven by the rotating assembly to move relative to the frame; the rotating assembly comprises a rotating seat and a fixing frame; the lower end surface of the rotating seat is rotatably connected with the frame; the fixed seat is fixedly arranged on the rotating seat and used for being fixedly connected with the drilling assembly. Through the integrated rotating assembly and drilling assembly, the rock-soil sampling device can efficiently go deep into a rock-soil layer for sampling. A driving rotating structure and a winch lifting structure in the drilling assembly are matched with each other, so that the rotation and lifting of the drill rod can be accurately controlled, the accuracy of the sampling depth and position is ensured, and the sampling efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of geotechnical engineering investigation, and particularly relates to a geotechnical sampling device for geotechnical engineering investigation. Background Art

[0002] When sampling geotechnical materials, a sampling cylinder is directly used to sample the geotechnical materials, but there is no limiting mechanism at the opening of the sampling cylinder. As a result, the geotechnical sample is prone to falling when being lifted. Even if the geotechnical sample can just stay inside the sampling cylinder without falling, it will still cause inconvenience when taking it out later, thus delaying the work efficiency.

[0003] A geotechnical sampling device for marine geological survey disclosed in Chinese invention patent CN117074074A can break the geotechnical materials by driving the sampling cylinder to move through a set impact pump, and then it is convenient to collect them into the sampling cylinder. After the motor drives the shaft rod to rotate, the shaft rod will drive the sleeve to rotate through a bevel gear connecting piece. After the sleeve rotates, it will drive the semi-gear to rotate through a second ratchet component. After the semi-gear rotates, it will drive the toothed ring to rotate. After the toothed ring rotates, it will reverse the torsion spring, and after the toothed ring rotates, it will drive the column to rotate through an arc-shaped guide groove. The bottom of the column is located in a rectangular groove, so that the column slides open and close. After the column slides, it will drive the opening and closing plate to move synchronously, and the opening and closing plate will close and gather, thereby closing the bottom of the sampling cylinder to prevent the sample inside the sampling cylinder from falling during the movement. Moreover, the opening and closing plate is provided with honeycomb holes to facilitate draining seawater and reducing the weight.

[0004] In the prior art, the method for preventing sample from falling is only applicable to broken samples, while many geotechnical samples in the process of geotechnical exploration are in the form of whole columnar shapes, which are not applicable to the current sample anti-drop device for columnar geotechnical samples. Summary of the Invention

[0005] The purpose of the present invention is to provide a geotechnical sampling device for geotechnical engineering investigation to solve at least one of the technical problems existing in the prior art.

[0006] To solve the above technical problems, a geotechnical sampling device for geotechnical engineering investigation provided by the present invention includes a vehicle frame, a rotating assembly, and a drilling assembly; The lower end of the rotating assembly is rotatably arranged on the vehicle frame; The drilling assembly is fixedly arranged on the rotating assembly and is driven by the rotating assembly to move relative to the vehicle frame.

[0007] Further, the rotating assembly includes a rotating seat and a fixing frame; The lower end face of the rotating seat is rotatably connected to the vehicle frame; The fixed seat is fixedly arranged on the rotating seat and is used for fixedly connecting with the drilling assembly.

[0008] Further, the drilling assembly includes a driving and rotating structure; The driving and rotating structure includes a vertical beam, a drill pipe, a sampling cylinder and a driving connection pair; The sampling cylinder is arranged at the bottom end of the drill pipe and is used for geotechnical sampling; The driving connection pair is arranged on the vertical beam and the drill pipe and is used for driving the drill pipe and the sampling cylinder to rotate.

[0009] Further, the driving connection pair includes a driver, a driving disc, a driving cylinder, a driving gear and a toothed ring; The driving disc is arranged on the vertical beam; The driver is arranged at the outer end of the driving disc; The output end of the driver passes through the outer wall of the driving disc and is drivingly connected with the driving gear inside the driving disc; A driving cylinder is sleeved on the drill pipe, and a toothed ring is arranged on the driving cylinder; The toothed ring meshes with the driving gear; When the driver drives the driving gear to rotate, the driving gear transmits the rotational motion to the drill pipe through the toothed ring meshing with it, so that the drill pipe rotates.

[0010] Further, a groove arranged axially is provided on the vertical beam; A sliding plate is fixedly arranged on the driving disc; The sliding plate is slidably arranged in the groove; A cylinder is fixedly arranged in the groove; The output end of the cylinder is fixedly connected with the sliding plate; The cylinder drives the sliding plate to move axially along the vertical beam, thereby driving the driving disc to move up and down.

[0011] Further, the drilling assembly further includes a hoisting and lifting structure; The hoisting and lifting structure includes a hoist, a cable, a pulley frame and a connecting end cover; The hoist is fixedly arranged on the rotating assembly; The pulley frame is fixedly arranged at the top end of the vertical beam; The connecting end cover is arranged at the top end of the drill pipe; The cable extends out of the hoist, bypasses the pulley frame and is connected to the connecting end cover; The hoist lifts or lowers the drill pipe by winding in or out the cable.

[0012] Further, the pulley frame includes a frame body, a first fixed pulley, and a second fixed pulley; The first fixed pulley and the second fixed pulley are arranged on the frame body; The first fixed pulley is arranged on the side of the frame body close to the winch; The second fixed pulley is arranged on the side away from the first fixed pulley; The cable passes through the second fixed pulley and is vertically connected to the connecting end cover downward.

[0013] Further, the drilling assembly further includes a sleeve; A convex ring is arranged on the side wall of the sampling cylinder; The sleeve is sleeved outside the sampling cylinder, and the position of the sleeve is limited between the two convex rings through the limitation of the convex ring.

[0014] Further, an inclined opening space is arranged between the sleeve and the sampling cylinder; A through groove is arranged on the side wall of the sampling cylinder; A buckle is arranged in the through groove; The bottom of the buckle is rotatably connected to the inner wall of the through groove through a rotating shaft; The cross-sectional depth of the buckle is greater than the depth of the through groove; A spring piece is arranged on the buckle; The spring piece is located in the inclined opening space and abuts against the sleeve; When conducting geotechnical sampling, by axially moving the sleeve, the spring piece relatively moves from the wider side of the inclined opening space to the narrower side of the inclined opening space, so that the end of the buckle away from the spring piece enters the sampling cylinder and abuts against the geotechnical sample, thereby clamping the geotechnical sample. Moving the sleeve again, the spring piece relatively moves to the wider side of the inclined opening space and is gradually released, and the pressure of the buckle on the geotechnical sample is reduced, thereby reducing the clamping force on the geotechnical soil.

[0015] Further, a compensating sleeve is further included; The compensating sleeve is sleeved between the two convex rings of the sampling cylinder and is used to occupy the remaining space between the two convex rings after the sleeve is sleeved, so as to limit the sliding of the sleeve.

[0016] Further, the compensating sleeve is composed of a pair of arc-shaped plates provided with thread grooves, and the two arc-shaped plates are connected by a stud passing through the threaded holes.

[0017] Further, a rod groove is further arranged on the drill pipe; Strip-shaped protrusions are arranged on the driving cylinder; The strip-shaped protrusions are inserted into the rod groove.

[0018] Further, wheels are provided at the four corners of the frame. An electric motor is also provided on the frame for driving the wheels to rotate.

[0019] Further, a receiving groove is formed in the rotating seat. The receiving groove is used for placing a counterweight to prevent the frame from tipping due to uneven force.

[0020] Adopting the above technical solution, the present invention has the following beneficial effects: (1) Through the integrated rotating assembly and drilling assembly, the geotechnical sampling device can efficiently penetrate into the rock and soil layers for sampling. The driving rotation structure and the hoisting and lowering structure in the drilling assembly cooperate with each other to accurately control the rotation and lifting of the drill rod, thereby ensuring the accurate depth and position of sampling and improving the sampling efficiency.

[0021] (2) The design of the wheels and the electric motor on the frame makes the whole device easy to move and position, greatly enhancing the operation flexibility. At the same time, the receiving groove on the rotating seat can place a counterweight to ensure the balanced force of the frame during sampling, prevent tipping, and improve the overall stability of the device.

[0022] (3) The design of the sleeve and the buckle in the drilling assembly can cleverly clamp and loosen the geotechnical sample. At the same time, the setting of the compensating sleeve can limit the sliding of the sleeve and improve the stability of the equipment. Description of the Drawings

[0023] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the geotechnical sampling device for geotechnical engineering investigation of the present application; Figure 2 is Figure 1 a partial enlarged view of part A in Figure 3 is Figure 1 a partial enlarged view of part B in Figure 4 It is the front view of the geotechnical sampling device for geotechnical engineering investigation of the present application; Figure 5 It is a three-dimensional structural schematic diagram of the geotechnical sampling device for geotechnical engineering investigation of the present application after removing the frame; Figure 6 It is a schematic plan view of a vertical beam and related components; Figure 7 It is a schematic three-dimensional view of a drill pipe and related components; Figure 8 It is Figure 7 The partial enlarged view at position C in Figure 9 It is a schematic three-dimensional view of a driving connection pair; Figure 10 It is Figure 9 The partial enlarged view at position D in Figure 11 It is a schematic three-dimensional view of the sampling cylinder; Figure 12 It is an exploded view of the sampling cylinder; Figure 13 It is Figure 12 The partial enlarged view at position E in Figure 14 It is a schematic view of the sampling cylinder after the sleeve and the compensating sleeve are made transparent; Figure 15 It is Figure 14 The partial enlarged view at position F in Figure 16 It is Figure 14 The partial enlarged view at position G in

[0025] Reference numerals: 100 - vehicle frame; 110 - wheel; 120 - receiving groove; 130 - counterweight; 200 - rotating assembly; 210 - rotating seat; 220 - fixing frame; 300 - drilling assembly; 310 - driving rotation structure; 311 - vertical beam; 311a - groove; 312 - drill pipe; 312a - rod groove; 313 - sampling cylinder; 313a - convex ring; 313b - through groove; 314 - driving connection pair; 314a - driver; 314b - driving disc; 314c - driving cylinder; 314d - driving gear; 314e - toothed ring; 320 - slide plate; 330 - cylinder; 340 - hoisting and lifting structure; 341 - hoist; 342 - cable; 343 - pulley frame; 343a - frame body; 343b - first fixed pulley; 343c - second fixed pulley; 344 - connecting end cap; 350 - sleeve; 351 - inclined opening space; 360 - buckle; 370 - elastic sheet; 380 - compensating sleeve; 381 - arc plate; 382 - thread groove; 383 - stud; 390 - strip-shaped protrusion. Detailed implementation manners

[0026] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0029] It should also be noted that the following specific embodiments or specific implementation manners are a series of optimized setting manners listed by the present invention to further explain the specific invention content, and these setting manners can be combined with each other or used in association with each other.

[0030] The present invention will be further explained below in conjunction with specific implementation manners.

[0031] As Figure 1-4 shown, a geotechnical sampling device for geotechnical engineering investigation provided in this embodiment includes a vehicle frame 100, a rotating assembly 200, and a drilling assembly 300; The lower end of the rotating assembly 200 is rotatably provided on the vehicle frame 100; The drilling assembly 300 is fixedly provided on the rotating assembly 200 and is driven by the rotating assembly 200 to move relative to the vehicle frame 100.

[0032] As Figure 1 shown, as a further implementation manner of this embodiment, the rotating assembly 200 includes a rotating seat 210 and a fixed frame 220; The lower end surface of the rotating seat 210 is rotatably connected to the vehicle frame 100; The fixed seat is fixedly arranged on the rotating seat 210 and is used for fixedly connecting with the drilling assembly 300.

[0033] As Figure 1 shown, as a further implementation manner of this embodiment, wheels 110 are arranged at the four corners of the vehicle frame 100; A motor is further arranged on the vehicle frame 100 and is used for driving the wheels 110 to rotate.

[0034] As Figure 1 shown, as a further implementation manner of this embodiment, a receiving groove 120 is formed on the rotating seat 210; The receiving groove 120 is used for placing a counterweight 130 to prevent the vehicle frame 100 from tipping over due to unbalanced force.

[0035] When the geotechnical sampling device disclosed in this application is in use, first, the geotechnical sampling device reaches the area to be sampled through the motor and the wheels 110, and the rotation of the rotating seat 210 drives the drilling assembly 300 to accurately reach above the area to be sampled and perform sampling.

[0036] As Figure 1 、 2 、4 shown, as a further implementation manner of this embodiment, the drilling assembly 300 includes a driving and rotating structure 310; The driving and rotating structure 310 includes a vertical beam 311, a drill pipe 312, a sampling cylinder 313, and a driving connection pair 314; The sampling cylinder 313 is arranged at the bottom end of the drill pipe 312 and is used for geotechnical sampling; The driving connection pair 314 is arranged on the vertical beam 311 and the drill pipe 312 and is used for driving the drill pipe 312 and the sampling cylinder 313 to rotate.

[0037] As Figure 5 、 7 -10 shown, as a further implementation manner of this embodiment, the driving connection pair 314 includes a driver 314a, a driving disk 314b, a driving cylinder 314c, a driving gear 314d, and a toothed ring 314e; The driving disk 314b is arranged on the vertical beam 311; The driver 314a is arranged at the outer end of the driving disk 314b; The output end of the driver 314a passes through the outer wall of the driving disk 314b and is drivingly connected to the driving gear 314d inside the driving disk 314b; A drive cylinder 314c is sleeved on the drill pipe 312, and a toothed ring 314e is arranged on the drive cylinder 314c; The toothed ring 314e meshes with the drive gear 314d; When the driver 314a drives the drive gear 314d to rotate, the drive gear 314d transmits the rotational motion to the drill pipe 312 through the toothed ring 314e meshing with it, causing the drill pipe 312 to rotate.

[0038] In a geotechnical sampling device for geotechnical engineering investigation disclosed in this embodiment, when the drill pipe 312 reaches the designated position, the drive cylinder 314c is driven to rotate through the drive disk 314b, and the drill pipe 312 sleeved on the drive cylinder 314c rotates synchronously, thereby driving the sampling cylinder 313 to drill and sample.

[0039] The toothed ring 314e is connected to the inside of the drive disk 314b through the bearing. The drive cylinder 314c is fixedly inserted into the toothed ring 314e. The drive cylinder 314c penetrates through the bottom of the drive disk 314b. A drive gear 314d is arranged inside the drive disk 314b and on one side of the toothed ring 314e. The drive gear 314d meshes with the toothed ring 314e. One side of the lower surface of the drive disk 314b is provided with the driver 314a. The driving end of the driver 314a is connected to the center of the drive gear 314d. The rotation of the drive cylinder 314c is controlled by the driver 314a to drive the drive gear 314d to rotate. When the drive gear 314d rotates, it drives the meshing toothed ring 314e to rotate. The toothed ring 314e is fixed to the drive cylinder 314c. Further, the drill pipe 312 sleeved inside the drive cylinder 314c is driven to rotate synchronously.

[0040] As Figure 6 shown, as a further implementation manner of this embodiment, a groove 311a arranged axially is provided on the vertical beam 311; A slide plate 320 is fixedly arranged on the drive disk 314b; The slide plate 320 is slidably arranged in the groove 311a; A cylinder 330 is fixedly arranged in the groove 311a; The output end of the cylinder 330 is fixedly connected to the slide plate 320; The cylinder 330 drives the slide plate 320 to move axially along the vertical beam 311, thereby driving the drive disk 314b to move up and down.

[0041] When the geotechnical sampling device for geotechnical engineering investigation disclosed in this embodiment is actually working, the output end of the cylinder 330 is pin-connected to the upper surface of the sliding plate 320, and the cylinder 330 is pin-connected in the groove 311a of the vertical beam 311. Preferably, the vertical beam 311 is a channel steel structure, and the groove 311a is a self-owned structure of the channel steel.

[0042] As Figure 1 , 3 , shown in Figure 5, as a further implementation manner of this embodiment, the drilling assembly 300 further includes a hoisting and lowering structure 340; The hoisting and lowering structure 340 includes a hoist 341, a cable 342, a pulley frame 343 and a connecting end cover 344; The hoist 341 is fixedly arranged on the rotating assembly 200; The pulley frame 343 is fixedly arranged at the top of the vertical beam 311; The connecting end cover 344 is arranged at the top end of the drill pipe 312; The cable 342 extends out of the hoist 341, bypasses the pulley frame 343 and is connected to the connecting end cover 344; The hoist 341 lifts or lowers the drill pipe 312 by winding in or out the cable 342.

[0043] As Figure 3 shown, as a further implementation manner of this embodiment, the pulley frame 343 includes a frame body 343a, a first fixed pulley 343b and a second fixed pulley 343c; The first fixed pulley 343b and the second fixed pulley 343c are arranged on the frame body 343a; The first fixed pulley 343b is arranged on the side of the frame body 343a close to the hoist 341; The second fixed pulley 343c is arranged on the side far from the first fixed pulley 343b; The cable 342 is vertically downward connected to the connecting end cover 344 after passing through the second fixed pulley 343c.

[0044] When the geotechnical sampling device for geotechnical engineering investigation disclosed in this embodiment is actually working, the lifting and lowering of the drill pipe 312 is controlled by the pulling force of the hoisting and lowering structure 340 and the gravity of the drill pipe 312. Since the second pulley is arranged directly above the connecting end cover 344, the cable 342 gives a vertical pulling force to the connecting end cover 344, thus ensuring that the drill pipe 312 is lifted and lowered vertically without deviation.

[0045] As Figure 11-16As shown, as a further implementation of this embodiment, the drilling assembly 300 further includes a sleeve 350; A convex ring 313a is provided on the side wall of the sampling cylinder 313; The sleeve 350 is sleeved outside the sampling cylinder 313, and the position of the sleeve 350 is restricted between the two convex rings 313a by the limitation of the convex ring 313a.

[0046] As Figure 14-16 As shown, as a further implementation of this embodiment, an inclined opening space 351 is provided between the sleeve 350 and the sampling cylinder 313; A through groove 313b is provided on the side wall of the sampling cylinder 313; A buckle 360 is provided in the through groove 313b; The bottom of the buckle 360 is rotatably connected to the inner wall of the through groove 313b through a rotating shaft; The cross-sectional depth of the buckle 360 is greater than the depth of the through groove 313b; A spring piece 370 is provided on the buckle 360; The spring piece 370 is located in the inclined opening space 351 and abuts against the sleeve 350; When performing geotechnical sampling, by axially moving the sleeve 350, the spring piece 370 relatively moves from the wider side of the inclined opening space 351 to the narrower side of the inclined opening space 351, so that one end of the buckle 360 away from the spring piece 370 enters the sampling cylinder 313 and abuts against the geotechnical sample, thereby clamping the geotechnical sample. Moving the sleeve 350 again, the spring piece 370 relatively moves towards the wider side of the inclined opening space 351 and is gradually released, and the pressure of the buckle 360 on the geotechnical sample is reduced, thereby reducing the clamping force on the geotechnical soil.

[0047] When the geotechnical sampling device for geotechnical engineering exploration disclosed in this embodiment is actually working, the convex rings 313a are integrally connected to both ends of the outer surface of the sampling cylinder 313. In this embodiment, the distance of the up and down sliding of the sleeve 350 is restricted by the convex rings 313a to prevent the sleeve 350 from falling off. At the same time, since a space for the sleeve 350 to slide needs to be reserved, the length of the sleeve 350 is less than the distance between a pair of convex rings 313a, so that the sleeve 350 has a space for up and down movement.

[0048] When the sleeve 350 moves up and down, the spring piece 370 changes its elastic potential energy in the inclined opening space 351 with the change of the inclined opening side wall, thereby changing the resistance force to the geotechnical sample, and realizing the clamping or loosening of the geotechnical sample.

[0049] AsFigure 11-12 As shown, as a further implementation of this embodiment, it further includes a compensation sleeve 380; The compensation sleeve 380 is sleeved between the two convex rings 313a of the sampling cylinder 313, and is used to occupy the remaining space between the two convex rings 313a after the sleeve 350 is sleeved, so as to limit the sliding of the sleeve 350.

[0050] As Figure 12 shown, as a further implementation of this embodiment, the compensation sleeve 380 is composed of a pair of arc-shaped plates 381 provided with threaded grooves 382, and the two arc-shaped plates 381 are connected by a stud 383 passing through the threaded holes.

[0051] During the use of the sleeve 350, excessive sliding may occur, causing the elastic piece 370 to slide out of the inclined opening space 351, so that the elastic piece 370 loses the extrusion force, resulting in the buckle 360 losing the ability to resist the rock and soil sample. Therefore, in this embodiment, the compensation sleeve 380 is sleeved at one end of the sleeve 350 on the sampling cylinder 313. By the compensation sleeve 380 occupying the remaining distance between the pair of convex rings 313a, the sleeve 350 is fixed and cannot be displaced.

[0052] The disassembly method of assembling the two arc-shaped plates 381 into the compensation cylinder by passing the stud 383 through the threaded hole is very simple, which is more convenient when maintenance or replacement is needed, enabling it to be more easily clamped on the sampling cylinder 313 and also facilitating disassembly later, so as to make room for the movement of the sleeve 350.

[0053] As Figure 8 shown, as a further implementation of this embodiment, a rod groove 312a is further provided on the drill pipe 312; A strip-shaped protrusion 390 is provided on the driving cylinder 314c; The strip-shaped protrusion 390 is inserted into the rod groove 312a.

[0054] In this embodiment, when the driving gear 314d drives the driving cylinder 314c to rotate through the tooth ring 314e, the strip-shaped protrusion 390 horizontally abuts against the rod groove 312a to make the drill pipe 312 rotate. In the case of ensuring that the drill pipe 312 can be driven to rotate, the drill pipe 312 can also achieve the purpose of lifting and lowering, so that during the drilling process, the drill pipe 312 can always move downward.

[0055] In this embodiment, the sampling depth is changed by increasing or decreasing the drill pipe 312. When it is necessary to increase the drill pipe 312, the connection end cover 344 is disconnected from the uppermost drill pipe 312. The driving disk 314b is driven upward by the cylinder 330, so that the driving cylinder 314c is disengaged from the socket connection with the drill pipe 312. At this time, a new drill pipe 312 is added. The driving disk 314b descends under the drive of the cylinder 330, so that the driving cylinder 314c is socket-connected with the newly added drill pipe 312. The strip-shaped protrusions 390 provided on the inner wall of the driving cylinder 314c are slidably connected with the rod grooves 312a of the drill pipe 312, and the connection end cover 344 is connected with the newly added drill pipe 312.

[0056] As a further implementation manner of this embodiment, grinding teeth are provided at the bottom of the sampling cylinder 313 for crushing rock and soil.

[0057] Adopting the above technical solution, the present invention has the following beneficial effects: (1) Through the coordinated action of the rotating assembly 200 and the drilling assembly 300, the rock and soil sampling device can accurately reach the predetermined sampling position and quickly complete the sampling operation, significantly improving the sampling accuracy and efficiency.

[0058] (2) The vehicle frame 100 is equipped with wheels 110 and a motor, making the movement and positioning of the device more convenient. At the same time, the rotational design of the rotating seat 210 further enhances the operation flexibility and can adapt to the sampling requirements at different angles and positions.

[0059] (3) The design of the receiving groove 120 on the rotating seat 210 can place the counterweight 130 to balance the force on the vehicle frame 100, prevent tipping, and ensure the stability and safety of the equipment during the sampling process.

[0060] (4) In the drilling assembly 300, the driving rotation structure 310 and the hoisting and lowering structure 340 can accurately control the rotation and lifting of the drill pipe 312, reducing the disturbance to the rock and soil layer.

[0061] (5) By increasing or decreasing the number of drill pipes 312, the sampling depth can be flexibly adjusted to meet the requirements of different geotechnical engineering investigations.

[0062] (6) A buckle 360 is provided on the outer surface of the sampling cylinder 313 of the present invention, and the buckle 360 is made to abut against the rock and soil sample through the elastic piece 370, which can effectively prevent the rock and soil sample from falling during the sampling process and ensure the integrity of the sampling. When the sleeve 350 moves downward, its inclined section provides space for the release of the elastic piece 370, making the buckle 360 loose and facilitating the falling of the rock and soil sample. This not only facilitates the retention of the sample during sampling but also facilitates the subsequent extraction of the sample.

[0063] (7) In the present invention, the driving disc 314b adjusts the height of the sliding plate 320 on the vertical beam 311 by pushing and pulling with the cylinder 330. The vertical beam 311 is of channel steel structure. This structural design enables the sampling device to flexibly adjust the sampling depth and position according to actual needs, adapting to different geotechnical investigation requirements. A winch 341 is assembled on the rotating seat 210, and the cable 342 is connected to the connecting end cover 344 at the end of the drill pipe 312. The direction of the cable 342 can be changed by the fixed pulley on the pulley frame 343, which can assist in adjusting the position of the drill pipe 312 and further enhances the flexibility of sampling position adjustment.

[0064] (8) In the present invention, strip-shaped protrusions 390 are symmetrically arranged on the inner wall of the driving cylinder 314c, and rod grooves 312a are correspondingly formed on the outer surface of the drill pipe 312. When the drill pipe 312 is sleeved in the driving cylinder 314c, the strip-shaped protrusions 390 are located in the rod grooves 312a. When the driving gear 314d drives the driving cylinder 314c to rotate through the toothed ring 314e, the strip-shaped protrusions 390 horizontally abut against the rod grooves 312a to make the drill pipe 312 rotate. This design can ensure the stable rotation of the drill pipe 312, which is beneficial to smoothly drilling into the rock and soil for sampling.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A geotechnical sampling device for geotechnical engineering investigation, characterized in that, It includes a frame, a rotating assembly, and a drilling assembly; The lower end of the rotating assembly is rotatably arranged on the frame; The drilling assembly is fixedly arranged on the rotating assembly and is driven by the rotating assembly to move relative to the frame; The rotating assembly includes a rotating seat and a fixing frame; The lower end face of the rotating seat is rotatably connected to the frame; The fixing seat is fixedly arranged on the rotating seat and is used for fixedly connecting with the drilling assembly; The drilling assembly includes a driving and rotating structure; The driving and rotating structure includes a vertical beam, a drill pipe, a sampling cylinder, and a driving connection pair; The sampling cylinder is arranged at the bottom end of the drill pipe and is used for geotechnical sampling; The driving connection pair is arranged on the vertical beam and the drill pipe and is used for driving the drill pipe and the sampling cylinder to rotate.

2. The geotechnical sampling device for geotechnical engineering investigation according to claim 1, characterized in that, The driving connection pair includes a driver, a driving disk, a driving cylinder, a driving gear, and a toothed ring; The driving disk is arranged on the vertical beam; The driver is arranged at the outer end of the driving disk; The output end of the driver passes through the outer wall of the driving disk and is drivingly connected with the driving gear inside the driving disk; A driving cylinder is sleeved on the drill pipe, and a toothed ring is arranged on the driving cylinder; The toothed ring meshes with the driving gear; When the driver drives the driving gear to rotate, the driving gear transmits the rotational motion to the drill pipe through the toothed ring meshing with it, causing the drill pipe to rotate.

3. The geotechnical sampling device for geotechnical engineering investigation according to claim 1, wherein, A groove is arranged axially on the vertical beam; A sliding plate is fixedly arranged on the driving disk; The sliding plate is slidably arranged in the groove; A cylinder is fixedly arranged in the groove; The output end of the cylinder is fixedly connected with the sliding plate; The cylinder drives the sliding plate to move axially along the vertical beam, thereby driving the driving disk to move up and down.

4. The geotechnical sampling device for geotechnical engineering investigation according to claim 1, wherein The drilling assembly further includes a hoisting and lifting structure; The hoisting and lifting structure includes a winch, a cable, a pulley frame, and a connecting end cover; The winch is fixedly arranged on the rotating assembly; The pulley frame is fixedly arranged at the top end of the vertical beam; The connecting end cover is arranged at the top end of the drill pipe; The cable extends from the winch, bypasses the pulley frame, and is connected to the connecting end cover; The winch lifts or lowers the drill pipe by taking in and paying out the cable.

5. The geotechnical sampling device for geotechnical engineering investigation according to claim 4, characterized in that, The pulley frame includes a frame body, a first fixed pulley, and a second fixed pulley; The first fixed pulley and the second fixed pulley are arranged on the frame body; The first fixed pulley is arranged on the side of the frame body close to the winch; The second fixed pulley is arranged on the side far from the first fixed pulley; The cable passes through the second fixed pulley and is vertically downward connected to the connecting end cover.

6. The geotechnical sampling device for geotechnical engineering investigation according to claim 1, characterized in that, The drilling assembly further includes a sleeve; A convex ring is arranged on the side wall of the sampling cylinder; The sleeve is sleeved outside the sampling cylinder, and the position of the sleeve is limited between two convex rings through the limitation of the convex ring; 7. The geotechnical sampling device for geotechnical engineering investigation according to claim 6, characterized in that, An inclined opening space is arranged between the sleeve and the sampling cylinder; A through groove is arranged on the side wall of the sampling cylinder; A buckle is arranged in the through groove; The bottom of the buckle is rotatably connected to the inner wall of the through groove through a rotating shaft; The cross-sectional depth of the buckle is greater than the depth of the through groove; A spring piece is arranged on the buckle; The shrapnel is located in the beveled space and abuts against the sleeve; When taking a geotechnical sample, by axially moving the sleeve, the shrapnel relatively moves from the wider side of the beveled space to the narrower side of the beveled space, so that the end of the buckle away from the shrapnel enters the sampling tube and abuts against the geotechnical sample, thereby clamping the geotechnical sample. Moving the sleeve again, the shrapnel relatively moves towards the wider side of the beveled space and is gradually released, and the pressure of the buckle on the geotechnical sample is reduced, thereby reducing the clamping force on the geotechnical soil.

8. The geotechnical sampling device for geotechnical engineering investigation according to claim 6, characterized in that, It also includes a compensation sleeve; The compensation sleeve is sleeved between the two convex rings of the sampling tube and is used to occupy the remaining space between the two convex rings after the sleeve is sleeved, thereby restricting the sliding of the sleeve; The compensation sleeve is composed of a pair of arc-shaped plates provided with threaded grooves, and the two arc-shaped plates are connected by a stud passing through the threaded holes.

9. The geotechnical sampling device for geotechnical engineering investigation according to claim 1, characterized in that, A rod groove is also provided on the drill pipe; Strip-shaped protrusions are provided on the driving cylinder; The strip-shaped protrusions are inserted into the rod grooves.

10. The geotechnical sampling device for geotechnical engineering investigation according to claim 1, characterized in that, Wheels are provided at the four corners of the vehicle frame; An electric motor is also provided on the vehicle frame for driving the wheels to rotate; A receiving groove is provided on the rotating seat; The receiving groove is used to place counterweights to prevent the vehicle frame from tipping due to unbalanced force.

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