Road subgrade construction detection sampling device

Abstract

The present application relates to the technical field of road subgrade construction detection, and specifically relates to a road subgrade construction detection sampling device, which comprises a fixing seat, a sampling assembly is slidably arranged on the fixing seat, the sampling assembly drills a cylindrical sample from a road subgrade, the sampling assembly comprises a sampling cylinder, a cutting mechanism is arranged inside the sampling cylinder, the cutting mechanism cuts off the sample from the road subgrade, a driving mechanism is arranged above the sampling cylinder, the driving mechanism drives the sampling cylinder to rotate, and the driving mechanism also controls the deflection of the cutting mechanism. The present application is provided with the cutting mechanism, through the cooperation of the cutting mechanism and the driving mechanism, the lower end of the sample in the sampling cylinder can be cut off after the sampling assembly reaches the specified depth, the integrity of the sample in the sampling cylinder is ensured, the sample will not be damaged or lost when being taken out of the ground, the authenticity of the road subgrade construction detection result is effectively improved, the difficulty of sampling work is reduced, and the road subgrade construction detection work of the staff is more convenient to carry out.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of road subgrade construction detection, and particularly relates to a road subgrade construction detection sampling device. BACKGROUND

[0002] Road subgrade construction is one of the largest construction contents in road engineering. After the completion of road infrastructure, the staff needs to sample and detect the constructed road subgrade, and thus needs to use a sampling device.

[0003] The current sampling method usually drills a ring-shaped incision on the road surface, and then detects the drilled cylindrical sample. However, the existing ring-shaped cutter head cannot separate the cylindrical sample from the foundation, and thus the staff needs to drill into the sample by using a screw rod and then pull out the sample from the ground by applying a pulling force. Although such a sampling method is convenient to operate, it is easy to damage the sample, and the lower layer of the sample is not easy to meet the sampling requirement depth during the pulling process, which is not conducive to the staff to obtain accurate road surface conditions. In view of this, the present application provides a road subgrade construction detection sampling device. SUMMARY

[0004] In view of the above shortcomings of the prior art, the present application provides a road subgrade construction detection sampling device, which can effectively solve the problems in the prior art.

[0005] To achieve the above purpose, the present application is implemented by the following technical solutions:

[0006] The road subgrade construction detection sampling device provided by the present application comprises:

[0007] A fixed seat configured to support various components and mechanisms;

[0008] A sampling assembly arranged in the fixed seat and configured to sample from the road subgrade;

[0009] The sampling assembly comprises:

[0010] A sampling cylinder rotatably arranged on the inner side of the fixed seat;

[0011] A cutting mechanism arranged in the sampling cylinder, the cutting mechanism comprising a plurality of arc-shaped cutter heads rotatably arranged on one side of the sampling cylinder, and the plurality of arc-shaped cutter heads are driven to rotate towards the inside of the sampling cylinder to cut the soil sample in the sampling cylinder.

[0012] Preferably, one end of each of the plurality of arc-shaped cutter heads is provided with a cutting cutter head.

[0013] When the plurality of arc-shaped cutter heads are driven to rotate to cut the soil sample, the plurality of cutting cutter heads are in contact and closed to support the cut soil sample.

[0014] Preferably, the sampling cylinder is provided with an arc-shaped slot for accommodating the arc-shaped cutter head;

[0015] One end of the arc-shaped cutter head is provided with a rotating rod, which is rotationally arranged at the corresponding arc-shaped slot, and the rotating rod is driven to rotate the arc-shaped cutter head.

[0016] Preferably, the sampling cylinder is driven by a driving mechanism;

[0017] The driving mechanism comprises:

[0018] A sliding seat is arranged at the output end of an electric motor;

[0019] A guide ring is connected to one side of the sliding seat, the guide ring can rotate with the sliding seat, and the guide ring is fixedly arranged with the sampling cylinder.

[0020] Preferably, the top end of the rotating rod is fixedly connected with a guide block;

[0021] A curved slot is arranged in the sliding seat corresponding to the guide block, and the guide block is slidingly arranged in the corresponding curved slot.

[0022] Preferably, the top end of the sampling cylinder is provided with a fixing ring, and the guide ring is connected to one side of the fixing ring;

[0023] The sampling assembly further comprises a plurality of supporting blocks, one end of the plurality of supporting blocks is rotationally arranged in the fixing ring through a first elastic member, and the other end of the plurality of supporting blocks can abut against the sliding seat.

[0024] Preferably, the plurality of supporting blocks are arranged in an L shape;

[0025] In the first state, one end of the supporting block abuts against the sliding seat, so that the sliding seat is relatively fixed with the guide ring;

[0026] In the second state, the supporting block rotates to release the abutment against the sliding seat, so that the sliding seat can slide relative to the guide ring.

[0027] Preferably, one side of the guide ring and the sliding seat is provided with a limiting table;

[0028] A plurality of second elastic members are arranged between the two limiting tables.

[0029] Preferably, the bottom end of the sliding seat is provided with a plurality of insertion rods, and the bottom end of the insertion rod is connected with two clamping blocks;

[0030] The top surface of the fixing ring is correspondingly provided with an insertion slot, and the insertion slot is correspondingly provided with a clamping slot.

[0031] Preferably, one side of the fixing seat is fixedly provided with a pedal.

[0032] Preferably, the top end of the sliding seat is rotationally provided with two handles;

[0033] The top end of the fixed seat is oppositely provided with two support plates, and the motor is slidably arranged between the two support plates through two connecting rods.

[0034] Preferably, one side of the two support plates is fixedly provided with a supporting plate, and the bottom surface of the handle can be in sliding contact with the top surface of the supporting plate when the handle moves to the highest point.

[0035] Compared with the prior art, the technical scheme provided by the present application has the following beneficial effects:

[0036] The present application is provided with a cutting mechanism, through the cooperation of the cutting mechanism and the driving mechanism, the sampling assembly can cut the lower end of the sample in the sampling cylinder after reaching the specified depth, ensuring the integrity of the sample in the sampling cylinder, so that the sample will not be damaged or missing when it is taken out of the ground, effectively improving the authenticity of the road subgrade construction detection result, also reducing the difficulty of sampling work, and making it more convenient for the staff to carry out road subgrade construction detection work, the design is ingenious and has strong practicality. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0038] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0039] Figure 2 It is a schematic diagram of the internal structure of the sampling cylinder of the present application;

[0040] Figure 3 It is a schematic diagram of the Figure 2 It is a schematic diagram of the enlarged structure at A in the present application;

[0041] Figure 4 It is a schematic diagram of the cross-sectional structure of the sampling cylinder of the present application;

[0042] Figure 5 It is a schematic diagram of the cross-sectional structure of the sliding seat of the present application;

[0043] Figure 6 It is a schematic diagram of the opening and closing state of the cutting mechanism of the present application;

[0044] Figure 7 It is a schematic diagram of the fixed seat structure of the present application;

[0045] Figure 8 The schematic diagram of the support block structure of the present application.

[0046] The reference signs in the drawings represent respectively:

[0047] 100, fixing seat; 110, pedal; 120, support plate; 130, lifting seat; 140, connecting rod; 150, connecting plate; 160, supporting plate; 170, stop block;

[0048] 200, sampling assembly;

[0049] 210, sampling cylinder; 211, ring cutter head; 212, sliding seat; 2121, handle; 2122, ring groove; 2123, second elastic member; 2124, block groove; 2125, curved groove; 213, guide ring; 214, fixing ring; 2141, through groove; 2142, shaft groove; 2143, insertion slot; 2144, clamping slot; 215, support block; 2151, hinged shaft; 2152, first elastic member; 216, insertion rod; 217, clamping block; 218, arc-shaped groove; 219, rod groove;

[0050] 220, cutting mechanism; 221, arc-shaped cutter head; 222, rotating rod; 223, cutting cutter head; 224, guide block;

[0051] 230, driving mechanism; 231, motor. DETAILED DESCRIPTION

[0052] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0053] It should be noted that, in the drawings of the present application, for the purpose of directly and visually showing the internal structure of the components, the section lines are not applied to the part of the section view.

[0054] Road subgrade construction detection sampling device, refer to Figures 1-8The utility model relates to a kind of roadbed soil sampling device, including: fixed seat 100 is configured to support each component and mechanism;Sampling assembly 200 is arranged in fixed seat 100, is configured to sample from roadbed;Wherein, the sampling assembly 200 includes: sampling cylinder 210, rotation is arranged in the inside of fixed seat 100;Truncation mechanism 220 is configured in the sampling cylinder 210, and the truncation mechanism 220 includes several arc-shaped cutter heads 221 rotationally arranged on the side of the sampling cylinder 210, several arc-shaped cutter heads 221 are driven to rotate towards the inside of sampling cylinder 210 to cut off the soil sample in sampling cylinder 210.

[0055] In the above technical solution, the sampling cylinder 210 is a ring structure, the lower end of the sampling cylinder 210 is coaxially fixedly connected with a ring cutter head 211, the bottom surface of the ring cutter head 211 is annularly arranged with a plurality of consecutive cutter teeth, during operation, the sampling cylinder 210 is driven to rotate, driving the ring cutter head 211 to rotate, under the action of downward pressure, the ring cutter head 211 can cut the soil sample in the roadbed into a cylindrical structure, then the truncation mechanism 220 is driven, the plurality of arc-shaped cutter heads 221 rotate towards each other (i.e., rotate towards the inside of the sampling cylinder 210), during rotation, the plurality of arc-shaped cutter heads 221 cut off the soil sample in the sampling cylinder 210, facilitating subsequent removal and subsequent detection of the soil sample.

[0056] In one specific technical solution, one end of each of the plurality of arc-shaped cutter heads 221 is provided with a cutting-off cutter head 223; when the plurality of arc-shaped cutter heads 221 are driven to rotate to cut off the soil sample, the plurality of cutting-off cutter heads 223 are in contact and closed to support the cut-off soil sample.

[0057] That is, in the above technical solution, the arc-shaped cutter head 221 can cut off the soil sample on one hand, and can cooperate with the cutting-off cutter head 223 to support the cut-off soil sample on the other hand, so that the integrity of the soil sample can be ensured when the sampling cylinder 210 removes the soil sample from the roadbed; when the sampling cylinder 210 is removed from the roadbed, the plurality of arc-shaped cutter heads 221 and the cutting-off cutter heads 223 rotate towards the outside of the sampling cylinder 210, releasing the support of the soil sample, facilitating removal of the soil sample from the sampling cylinder 210.

[0058] In one specific example, the sampling cylinder 210 is provided with an arc-shaped groove 218 for accommodating the arc-shaped cutter head 221; one end of each of the arc-shaped cutter heads 221 is provided with a rotating rod 222, the rotating rod 222 is rotationally arranged at the corresponding arc-shaped groove 218, and the rotating rod 222 is driven to rotate the arc-shaped cutter head 221.

[0059] In the above technical solution, when the sampling cylinder 210 needs to drill into the roadbed for sampling, the arc-shaped cutter head 221 is accommodated in the arc-shaped groove 218, avoiding affecting the sampling work; when the arc-shaped cutter head 221 needs to cut off the soil sample, the arc-shaped cutter head 221 is driven to rotate and rotate towards the inside of the sampling cylinder 210, so that the plurality of arc-shaped cutter heads 221 can cut off the soil sample.

[0060] In actual work, the sampling assembly 200 needs to rotate the sampling cylinder 210 during sampling to make the annular cutter head rotate and sample, so in a specific example, the sampling cylinder 210 is driven by a driving mechanism 230, wherein the driving mechanism 230 includes a sliding seat 212 arranged at the output end of an electric motor 231, and a guide ring 213 connected to one side of the sliding seat 212, which can rotate with the sliding seat 212, and the guide ring 213 is fixedly arranged with the sampling cylinder 210.

[0061] During sampling, the electric motor 231 drives the sliding seat 212 to rotate, the guide ring 213 rotates with the sliding seat 212, and then the guide ring 213 drives the sampling cylinder 210 to rotate.

[0062] Among them, in order to make the guide ring 213 rotate with the sliding seat 212 during sampling, in a specific example, the outer wall of the guide ring 213 is uniformly provided with a plurality of protrusions, and the bottom of the sliding seat 212 is provided with a plurality of ring grooves 2122 corresponding to the plurality of protrusions, the protrusions are slidingly arranged in the corresponding ring grooves 2122, so that the sliding seat 212 and the guide ring 213 can rotate synchronously and can slide relative to each other.

[0063] Based on the foregoing explanation, during the cutting of the soil sample, the arc-shaped cutter head 221 is driven by the rotating rod 222, wherein in a specific example, the top end of the rotating rod 222 can be provided with a gear, and the rotating rod 222 is driven to rotate by the driving of the plurality of gears by the electric motor, and then the plurality of arc-shaped cutter heads 221 cut off the soil sample.

[0064] In another example described in the embodiments of the present application, the top end of the rotating rod 222 is fixedly connected with a guide block 224, and a curved groove 2125 corresponding to the guide block 224 is formed in the sliding seat 212, and the guide block 224 is slidingly arranged in the corresponding curved groove 2125.

[0065] Specifically, the bottom surface of the sliding seat 212 is provided with a rod groove 219 matched with the rotation of the rotating rod 222, the upper end of the rotating rod 222 extends through the top surface of the sampling cylinder 210 into the rod groove 219 and is fixedly provided with the guide block 224, the inner wall of the rod groove 219 is provided with a curved groove 2125 slidingly matched with the guide block 224, and the curved groove 2125 is arranged on the inner wall of the rod groove 219 in a spiral ascending structure.

[0066] When it is needed to cut the soil sample in the sampling cylinder 210, the sliding seat 212 slides relative to the guide ring 213, at this time the guide block 224 moves along the threaded curve groove 2125, under the drive of the curve groove 2125, the guide block 224 drives the rotating rod 222 to rotate, in turn, the plurality of arc-shaped cutter heads 221 rotate to cut the soil sample; similarly, when the sliding seat 212 moves away from the guide ring 213, the guide block 224 drives the rotating rod 222 to rotate reversely, so that the plurality of arc-shaped cutter heads 221 move away from the center of the sampling cylinder 210 until they are accommodated in the arc-shaped groove 218.

[0067] In the above technical solution, the holding and sliding of the sliding seat 212 relative to the guide ring 213 can be realized by using a linear mechanism such as a hydraulic rod or an electric push rod, etc., when it is needed to sample the soil sample, the position between the sliding seat 212 and the guide ring 213 is kept unchanged, when it is needed to cut the soil sample, the sliding seat 212 is moved relative to the guide ring 213 by the linear mechanism, so that the arc-shaped cutter heads 221 rotate.

[0068] In one specific example of the present application, the top end of the sampling cylinder 210 is provided with a fixed ring 214, and the guide ring 213 is connected to one side of the fixed ring 214; the sampling assembly 200 further comprises a plurality of supporting blocks 215, one end of the plurality of supporting blocks 215 is rotatably arranged in the fixed ring 214 by a first elastic member 2152, and the other end of the plurality of supporting blocks 215 can abut against the sliding seat 212.

[0069] Among them, the plurality of supporting blocks 215 are arranged in an L shape; in a first state, one end of the supporting block 215 abuts against the sliding seat 212 to relatively fix the sliding seat 212 and the guide ring 213; in a second state, the supporting block 215 rotates to release the abutment against the sliding seat 212, so that the sliding seat 212 can slide relative to the guide ring 213.

[0070] Specifically, a plurality of support blocks 215 are evenly arranged around the sliding seat 212, the support blocks 215 are L-shaped structures, the support blocks 215 are arranged in an inclined structure with the upper end offset to the inner side, a block groove 2124 is formed at the edge of the bottom surface of the sliding seat 212 and is inserted and matched with the upper end of the support block 215, a through groove 2141 is formed in the fixed ring 214 and is slidably matched with the lower part of the support block 215, the lower part of the support block 215 extends to the lower part of the fixed ring 214 through the through groove 2141 and is rotationally connected with the through groove 2141 through a hinged shaft 2151, the lower end of the support block 215 is in extrusion contact with the ground when the bottom surface of the fixed ring 214 is in contact with the ground, an axle groove 2142 is formed in the inner wall of the through groove 2141 and is rotationally matched with the hinged shaft 2151, a first elastic element 2152 is sleeved on the outer wall of the hinged shaft 2151, and one end of the first elastic element 2152 away from the hinged shaft 2151 is fixedly connected with the inner wall of the axle groove 2142; wherein the first elastic element 2152 can be a torsional spring or the like having torsional resilience.

[0071] In the above technical solution, the first state is that the sliding seat 212 and the guide ring 213 remain relatively fixed, at this time, the top end of the support block 215 abuts in the block groove 2124 of the bottom surface of the sliding seat 212, the bottom end of the support block 215 is rotationally arranged in the corresponding through groove 2141, and one end of the support block 215 extends out of the corresponding through groove 2141, so that when the bottom surface of the fixed ring 214 is in contact with the ground, the extended part can be in extrusion contact with the ground to make the support block 215 rotate, and then the top end of the support block 215 is released from abutting the sliding seat 212, so that the sliding of the sliding seat 212 relative to the guide ring 213 can be realized, that is, the second state described above.

[0072] In one specific example of the present application, a limiting table is arranged on one side of the guide ring 213 and the sliding seat 212.

[0073] The arrangement of the limiting table makes the inner wall of the guide ring 213 and the ring groove 2122 have an L-shaped structure, and a plurality of second elastic elements 2123 are fixedly arranged between the inner side top surface of the guide ring 213 and the bottom surface of the ring groove 2122; wherein the second elastic element 2123 can be a tensile spring or the like having tensile resilience.

[0074] The arrangement of the second elastic element 2123 enables the guide ring 213 and the sliding seat 212 to move away from each other when they need to be separated.

[0075] The above technical solution can reduce the investment in power equipment compared with the solution using a linear mechanism, and can realize the relative fixation and relative sliding of the sliding seat 212 and the guide ring 213 using a mechanical structure, which is more suitable for outdoor open area operation.

[0076] Preferably, the bottom end of the sliding seat 212 is provided with a plurality of insertion rods 216, the bottom end of the insertion rod 216 is connected with two clamping blocks 217; the top surface of the fixed ring 214 is correspondingly provided with an insertion slot 2143, and the insertion slot 2143 is correspondingly provided with a clamping slot 2144.

[0077] Specifically, the bottom surface of the sliding seat 212 is fixed with an insertion rod 216 between the positions of the adjacent two block grooves 2124, the lower part of the insertion rod 216 is a U-shaped structure, the lower end of the insertion rod 216 is also symmetrically fixed with two clamping blocks 217, the top surface of the fixed ring 214 is provided with an insertion slot 2143 which is inserted and matched with the insertion rod 216, and the inner wall of the insertion slot 2143 is provided with a clamping slot 2144 which is clamped and matched with the clamping block 217.

[0078] Through the arrangement of the above technical scheme, when the sliding seat 212 moves relative to the guide ring 213, the insertion rod 216 can move towards the insertion slot 2143 until the clamping block 217 is clamped in the corresponding clamping slot 2144, at this time, under the driving of the curved slot 2125, the rotating rod 222 drives the arc-shaped cutter head 221 to move close to each other, and the cutting-off cutter head 223 rotates to the innermost end to splice a closed structure to support the cut-off soil sample; when the sampling cylinder 210 moves upward, under the condition that there is no external force, the clamping block 217 can be clamped in the clamping slot 2144, so that the arc-shaped cutter head 221 and the cutting-off cutter head 223 can support the soil sample.

[0079] In still another specific scheme, one side of the fixed seat 100 is fixedly provided with a pedal 110. The top end of the sliding seat 212 is rotatably provided with two handles 2121; the top end of the fixed seat 100 is oppositely provided with two support plates 120, and the electric motor 231 is slidably arranged between the two support plates 120 through two connecting rods 140. One side of the two support plates 120 is fixedly provided with a supporting plate 160, and the bottom surface of the handle 2121 can be in sliding contact with the top surface of the supporting plate 160 when the handle 2121 moves to the highest point.

[0080] Specifically, the fixed seat 100 is an annular structure and is coaxially arranged with the sampling cylinder 210, the front wall of the fixed seat 100 is fixedly provided with a pedal 110, the top surface of the fixed seat 100 is symmetrically fixedly provided with two support plates 120 at the rear part, the electric motor 231 is slidably connected with the two support plates 120 through two connecting rods 140 respectively, the outer wall of the fixed ring 214 is rotatably connected with a lifting seat 130, the top surface of the lifting seat 130 is symmetrically fixedly provided with two connecting plates 150 at the two sides, the connecting plate 150 is provided in an L-shaped structure, the two connecting plates 150 are slidably connected with the corresponding support plates 120 respectively, the front wall of the support plate 120 is fixedly provided with a supporting plate 160 at the upper end, the bottom surface of the handle 2121 can be in sliding contact with the top surface of the supporting plate 160 when the handle 2121 moves to the highest point, the front wall of the support plate 120 is fixedly provided with a stop block 170, and the bottom surface of the stop block 170 is in extrusion contact with the top surface of the connecting plate 150.

[0081] Working principle: after the completion of the road infrastructure, the staff can move the device to the site and randomly select a roadbed to be sampled for detection, place the device on the ground, and then start the sampling work. First, the staff need to use the motor 231 to drive the sliding seat 212 to rotate. In the rotation of the sliding seat 212, the guide ring 213 will be driven to rotate through the ring groove 2122 on the bottom surface of the sliding seat 212, and then the sampling cylinder 210 will be rotated under the drive of the driving mechanism 230.

[0082] Then the staff can step on the pedal 110 to stabilize the device and avoid the reaction force generated when the ring cutter head 211 contacts the ground from lifting the device. After stabilization, the handle 2121 can be turned lightly, so that both handles 2121 are not in contact with the corresponding supporting plate 160, and the sliding seat 212 will slide down under the action of gravity, and the staff can also apply pressure to the sampling assembly 200 through the handle 2121 to move it downward and cut the road surface through the ring cutter head 211. The bottom surface of the ring cutter head 211 is provided with a plurality of continuous cutter teeth, which can uniformly disperse the cutting force to multiple cutter teeth, improve the drilling efficiency, avoid single-point stress concentration, reduce the risk of cutter breakage, and improve the service life of the device. During the process of the sampling cylinder 210 drilling into the stratum, the external force cannot affect the distance between the sliding seat 212 and the fixed ring 214 because the plurality of supporting blocks 215 are inserted into the block groove 2124 to provide support to the sliding seat 212, thereby avoiding the premature operation of the cutting-off mechanism 220.

[0083] When the lower part of the sampling cylinder 210 is completely immersed in the road surface, and the bottom surface of the fixed ring 214 and the bottom surface of the lifting seat 130 connected therewith are in contact with the road surface, the bottom surface of the connecting plate 150 fixedly arranged on both sides of the lifting seat 130 is also in contact with the top surface of the fixed seat 100, and the lower end of the supporting block 215 is also in contact with the ground and turns into the through groove 2141 under the reaction force of the ground. When the bottom surface of the supporting block 215 is flush with the bottom surface of the fixed ring 214, the upper end of the supporting block 215 will move out of the block groove 2124, and then the sliding seat 212 will lose the support force provided by the supporting block 215. Under the continued force of the staff, the sliding seat 212 can slide downward along the direction in which it is slidingly connected with the guide ring 213, and the second elastic member 2123 between the guide ring 213 and the ring groove 2122 is also stretched under force.

[0084] On the other hand, the top surface of the rod groove 219 will also approach the top surface of the rotating rod 222 during the process of the sliding seat 212 sliding down, and the distance between the two will be reduced, which will also change the position of the guide block 224 corresponding to the curved groove 2125. Since the curved groove 2125 is arranged in a spiral upward structure on the inner wall of the rod groove 219 and the rod groove 219 cannot rotate, the guide block 224 will drive the rotating rod 222 to rotate under the extrusion of the curved groove 2125, thereby causing the multiple arc-shaped cutter heads 221 to deflect. Although the curved groove 2125 is arranged in a spiral structure, it is less than one turn of the spiral as a whole. By setting the size of the arc spanned by it, the deflection angle of the arc-shaped cutter head 221 can be controlled, and then the bottom of the existing sample in the sampling cylinder 210 can be cut under the deflection of the multiple arc-shaped cutter heads 221, so that it is separated from the ground.

[0085] It is worth noting that the arc-shaped cutter head 221 is also fixed with a cutting cutter head 223, and multiple cutting cutter heads 223 will eventually be spliced into a closed structure at the axial position of the sampling cylinder 210. In addition to the cutting of the arc-shaped cutter head 221 on the remaining part of the connection between the ground and the sample, the sample can be fully separated from the ground, avoiding damage or loss caused by the sample being pulled out of the ground, and multiple cutter heads can also play a lifting effect during the process of the sample being pulled out of the ground, preventing the sample from falling out of the sampling cylinder 210 too early, further improving the sampling convenience of the staff, and further increasing the integrity of the sample.

[0086] During the operation of the cutting mechanism 220, the sliding seat 212 and the fixed ring 214 are still in a state of continuously approaching. When the multiple cutting cutter heads 223 are spliced, the top surface of the fixed ring 214 and the bottom surface of the sliding seat 212 will also be in close contact with each other. At this time, the insertion rod 216 will be inserted into the insertion slot 2143, and the clamping block 217 will be clamped into the clamping slot 2144. In this way, the mutual fixation between the sliding seat 212 and the fixed ring 214 is completed, and then when the staff stops the operation of the driving mechanism 230 and pulls up the sampling cylinder 210 after sampling is completed, the sliding seat 212 and the fixed ring 214 will not separate first to cause the sample to fall out too early.

[0087] The two side supporting plates 120 of the device are set higher, so that when the sampling cylinder 210 is completely pulled out of the ground, the top surface of the connecting plate 150 will be in contact with the bottom surface of the stopper 170, but will not affect the connection between the sliding seat 212 and the fixing ring 214. At this time, the worker can move the device to move the sample to the designated location, and then continue to pull the handle 2121 to pull out the plug rod 216 from the insertion slot 2143. The upper and lower walls of the clamping block 217 are both arc-shaped structures, so that the clamping block 217 can be easily inserted or pulled out of the clamping slot 2144 without hard restriction. Under the flexibility of the U-shaped structure at the lower end of the plug rod 216, the clamping block 217 can be easily inserted or pulled out of the clamping slot 2144. After the restriction is released, the sliding seat 212 and the fixing ring 214 will quickly separate under the influence of the worker's pulling force and the weight of the sampling cylinder 210. At the same time, the cutting mechanism 220 will be retracted into the arc-shaped slot 218. With the assistance of the rebound force of the plurality of second elastic members 2123, the cutting mechanism 220 can be easily reset, reducing the physical exertion of the worker. The reset of the cutting mechanism 220 opens the lower opening end of the sampling cylinder 210, and then the sample can slide out of the sampling cylinder 210. The worker only needs to put it into detection.

[0088] It is worth mentioning that the device also has a supporting plate 160. When the worker lifts the sliding seat 212 to the highest position, he can rotate the handle 2121 slightly to make the bottom surface of one of the handles 2121 correspond to the position of the top surface of the supporting plate 160. In this way, the handle 2121 can be clamped and the height of the sampling assembly 200 can be limited, which facilitates the movement and storage of the device by the worker and prevents the sampling assembly 200 from sliding under the influence of gravity during movement.

[0089] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can modify the technical solutions described in the foregoing embodiments, or make equivalent replacements for some technical features. Such modifications or replacements will not change the essence of the corresponding technical solutions from the protection scope of the technical solutions of the embodiments of the present application.

Claims

1. A road subgrade construction testing and sampling device, characterized in that, include: The mounting base is configured to support the various components and mechanisms; The sampling component, housed within a mounting base, is configured to take samples from the roadbed. The sampling component includes: A sampling cylinder is rotatably mounted inside a fixed base. The sampling cylinder is driven by a driving mechanism, which includes a sliding base and a guide ring. The sliding base is located at the output end of a motor, and the guide ring is connected to one side of the sliding base. The guide ring can rotate with the sliding base and is fixedly mounted to the sampling cylinder. A fixed ring is provided at the top of the sampling cylinder, and the guide ring is connected to one side of the fixed ring. A cutting mechanism is disposed inside the sampling tube. The cutting mechanism includes several arc-shaped blades rotatably disposed on one side of the sampling tube. An arc-shaped groove is provided on the sampling tube to accommodate the arc-shaped blades. One end of each of the arc-shaped blades is provided with a cutting blade. When the arc-shaped blades are driven to rotate to cut off the soil sample, the multiple cutting blades contact each other to support the cut soil sample. Furthermore, one end of each arc-shaped blade is provided with a rotating rod. A guide block is fixedly connected to the top of the rotating rod. A curved groove is provided in the sliding seat corresponding to the guide block. The guide block is slidably disposed in the corresponding curved groove. The sampling assembly also includes multiple support blocks. One end of each support block is rotatably mounted inside a fixed ring via a first elastic element, and the other end of each support block can abut against a sliding seat. The multiple support blocks are arranged in an L-shape. In a first state, one end of the support block abuts against the sliding seat, making the sliding seat relatively fixed to the guide ring. In a second state, the support block rotates to release the abutment against the sliding seat, allowing the sliding seat to slide relative to the guide ring.

2. The roadbed construction testing and sampling device according to claim 1, characterized in that, The rotating rod is rotatably positioned at the corresponding arc-shaped groove, and the rotating rod is driven to rotate the arc-shaped cutter head.

3. The roadbed construction testing and sampling device according to claim 1, characterized in that, Both the guide ring and the sliding seat are provided with a limiting platform on one side, and a plurality of second elastic elements are provided between the two limiting platforms.

4. The roadbed construction testing and sampling device according to claim 1, characterized in that, The bottom of the sliding seat is provided with several insert rods, and the bottom of each insert rod is connected to two locking blocks. The top surface of the fixing ring is provided with a corresponding slot, and the slot is provided with a corresponding groove in the locking block.

5. The road subgrade construction testing and sampling device according to any one of claims 1-4, characterized in that, A foot pedal is fixedly installed on one side of the fixed base.

6. The roadbed construction testing and sampling device according to claim 1, characterized in that, The top of the sliding seat is rotatably equipped with two handles; the top of the fixed seat is provided with two support plates opposite each other, and the motor is slidably configured between the two support plates via two connecting rods.

7. The roadbed construction testing and sampling device according to claim 6, characterized in that, A support plate is fixedly installed on one side of each of the two support plates, and the bottom surface of the handle can slide in contact with the top surface of the support plate when the handle is moved to the highest point.

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