Road roadbed construction detection sampling device

Abstract

The invention relates to the technical field of road subgrade construction detection, in particular to a road subgrade construction detection sampling device which comprises a fixed seat, a sampling assembly is slidably arranged on the fixed seat, the sampling assembly drills a cylindrical sample from a road subgrade, the sampling assembly comprises a sampling barrel, and a cut-off mechanism is arranged in the sampling barrel. The cut-off mechanism cuts off a sample from a road subgrade, a driving mechanism is arranged above the sampling barrel, the driving mechanism drives the sampling barrel to rotate, and the driving mechanism further controls the cut-off mechanism to deflect. The sampling device is provided with the cut-off mechanism, and through cooperation of the cut-off mechanism and the driving mechanism, the sampling assembly can cut off the lower end of a sample in the sampling barrel after reaching a specified depth, so that the integrity of the sample in the sampling barrel is guaranteed, and the sample cannot be damaged or lost when lifted 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 can be more conveniently carried out by workers.

Description

Technical Field

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

[0002] Road subgrade construction is one of the largest construction contents in road projects. After the road infrastructure is completed, workers need to take samples and conduct tests on the constructed road subgrade, and sampling equipment is needed at this time.

[0003] The current sampling method is usually to drill an annular incision on the road surface and then test the cut cylindrical sample. However, the existing annular cutter head makes it difficult to separate the cylindrical sample from the foundation. Workers are required to use a screw to drill into the sample and then pull the sample out of the ground by applying a pulling force. Although this sampling method is easy to operate, it is easy to cause damage to the sample. In addition, the pulling process may easily cause the fracture of the lower layer of the sample to not meet the sampling depth requirements, which is not conducive to workers obtaining accurate road conditions. In view of this, the present invention proposes a road subgrade construction detection sampling device. Summary of the Invention

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

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: The road subgrade construction detection sampling device provided by the present invention comprises: a fixed base configured to support the components and mechanisms; a sampling assembly disposed in the fixing seat and configured to take a sample from the roadbed; Wherein, the sampling component comprises: The sampling cylinder is rotatably arranged on the inner side of the fixed seat; The cutting mechanism is arranged in the sampling cylinder and comprises a plurality of arc-shaped cutting heads rotatably arranged on one side of the sampling cylinder. The plurality of arc-shaped cutting heads are driven to rotate toward the inside of the sampling cylinder to cut off the soil sample in the sampling cylinder.

[0006] Preferably, a cutting blade is provided at one end of each of the plurality of arc-shaped blades; When the plurality of arc-shaped blade heads are driven to rotate to cut off the soil sample, the plurality of cutting blade heads contact and close to support the cut soil sample.

[0007] Preferably, the sampling tube is provided with an arc-shaped groove for accommodating the arc-shaped cutter head; One end of each arc-shaped cutter head is provided with a rotating rod, and the rotating rod is rotatably arranged at the corresponding arc-shaped groove. The rotating rod is driven to drive the arc-shaped cutter head to rotate.

[0008] Preferably, the sampling cylinder is driven by a driving mechanism; Wherein, the driving mechanism includes: A sliding seat is provided at an output end of a motor; 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 fixed to the sampling tube.

[0009] Preferably, a guide block is fixedly connected to the top end of the rotating rod; A curved groove is provided in the sliding seat corresponding to the guide block, and the guide block is slidably arranged in the corresponding curved groove.

[0010] Preferably, a fixing ring is provided at the top of the sampling cylinder, and the guide ring is connected to one side of the fixing ring; The sampling assembly further comprises a plurality of support blocks, one end of each of the support blocks being rotatably disposed in the fixing ring via a first elastic member, and the other end of each of the support blocks being capable of contacting the sliding seat.

[0011] Preferably, the plurality of support blocks are arranged in an L-shape; In the first state, one end of the support block abuts against the sliding seat so that the sliding seat and the guide ring are relatively fixed; In the second state, the support block rotates to release the interference with the sliding seat, so that the sliding seat can slide relative to the guide ring.

[0012] Preferably, a limiting platform is provided on one side of the guide ring and the sliding seat; A plurality of second elastic members are arranged between the two limiting platforms.

[0013] Preferably, a plurality of inserting rods are provided at the bottom end of the sliding seat, and the bottom ends of the inserting rods are connected to two clamping blocks; A slot is correspondingly provided on the top surface of the fixing ring, and a clamping slot is correspondingly provided in the slot and in the clamping block.

[0014] Preferably, a pedal is fixedly provided on one side of the fixing seat.

[0015] Preferably, the top end of the sliding seat is rotatably provided with two handles; Two supporting plates are arranged opposite to each other on the top of the fixing seat, and the motor is slidably arranged between the two supporting plates through two connecting rods.

[0016] Preferably, a support plate is fixedly provided on one side 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 moves to the highest point.

[0017] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: The present invention is provided with a cut-off mechanism. Through the cooperation of the cut-off mechanism and the driving mechanism, the sampling component can cut off the lower end of the sample in the sampling tube after reaching the specified depth, thereby ensuring the integrity of the sample in the sampling tube and preventing the sample from being damaged or lost when it is raised to the ground. This effectively improves the authenticity of the road subgrade construction inspection results, reduces the difficulty of the sampling work, and makes it more convenient for staff to carry out road subgrade construction inspection work. The design is ingenious and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the sampling tube of the present invention; Figure 3 For the present invention Figure 2 A in the middle is an enlarged structural diagram; Figure 4 This is a schematic cross-sectional structural diagram of the sampling tube of the present invention; Figure 5 This is a schematic cross-sectional structural diagram of the sliding seat of the present invention; Figure 6 A schematic diagram comparing the opening and closing states of the cutting mechanism of the present invention; Figure 7 It is a schematic structural diagram of the fixing seat of the present invention; Figure 8 It is a schematic diagram of the support block structure of the present invention.

[0020] The numbers in the figure represent: 100, fixed seat; 110, pedal; 120, support plate; 130, lifting seat; 140, connecting rod; 150, connecting plate; 160, supporting plate; 170, stopper; 200, sampling assembly; 210, sampling tube; 211, circular cutting head; 212, sliding seat; 2121, grip; 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, slot; 2144, clamping groove; 215, support block; 2151, hinged shaft; 2152, first elastic member; 216, insertion rod; 217, clamping block; 218, arc groove; 219, rod groove; 220, cutting mechanism; 221, curved cutter head; 222, rotating rod; 223, cutting cutter head; 224, guide block; 230. Driving mechanism; 231. Electric motor. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0022] It should be noted that, in the drawings of the present application, in order to intuitively display the internal structure of the components, section lines are not applied to some of the cross-sectional views.

[0023] Road subgrade construction detection sampling device, reference Figures 1-8 , including: a fixing base 100, configured to support various components and mechanisms; a sampling component 200, arranged in the fixing base 100, and configured to sample from the roadbed; wherein, the sampling component 200 includes: a sampling barrel 210, rotatably arranged on the inner side of the fixing base 100; a cutting mechanism 220, arranged in the sampling barrel 210, the cutting mechanism 220 includes several arc-shaped cutting heads 221 rotatably arranged on one side of the sampling barrel 210, and the several arc-shaped cutting heads 221 are driven to rotate toward the inside of the sampling barrel 210 to cut off the soil sample in the sampling barrel 210.

[0024] In the above technical solution, the sampling barrel 210 is an annular structure, and the lower end of the sampling barrel 210 is coaxially fixedly connected with a circular cutting head 211. The bottom surface of the circular cutting head 211 is provided with a plurality of continuous teeth arranged in a ring shape. During operation, the sampling barrel 210 is driven to rotate, driving the circular cutting head 211 to rotate. Under the action of downward pressure, the circular cutting head 211 can cut the soil sample in the roadbed into a cylindrical structure. Then the cutting mechanism 220 is driven, and the multiple arc-shaped cutting heads 221 rotate toward each other (that is, they all rotate toward the inside of the sampling barrel 210). During the rotation, the multiple arc-shaped cutting heads 221 cut off the soil sample in the sampling barrel 210, making it convenient to take out the soil sample for subsequent testing.

[0025] In a specific technical solution, a cutting blade 223 is provided at one end of the plurality of arc-shaped blade heads 221; when the plurality of arc-shaped blade heads 221 are driven to rotate to cut off the soil sample, the plurality of cutting blade heads 223 contact and close to support the cut soil sample.

[0026] That is, in the above technical solution, the arc-shaped blade head 221 can, on the one hand, cut off the soil sample, and on the other hand, cooperate with the cutting blade head 223 to support the cut soil sample, so that the integrity of the soil sample can be ensured when the sampling tube 210 drives the soil sample to be taken out from the roadbed; when the sampling tube 210 is removed from the roadbed, the multiple arc-shaped blade heads 221 and the cutting blade head 223 rotate toward the outside of the sampling tube 210, releasing the support for the soil sample, and facilitating the removal of the soil sample from the sampling tube 210.

[0027] In a specific example, the sampling tube 210 is provided with an arc-shaped groove 218 for accommodating the arc-shaped blade head 221; a rotating rod 222 is provided at one end of the arc-shaped blade head 221, and the rotating rod 222 is rotatably arranged at the corresponding arc-shaped groove 218, and the rotating rod 222 is driven to drive the arc-shaped blade head 221 to rotate.

[0028] In the above technical solution, when the sampling tube 210 needs to be drilled into the roadbed for sampling, the arc-shaped cutter head 221 is stored in the arc-shaped groove 218 to avoid affecting the sampling work; when the arc-shaped cutter head 221 needs to cut off the soil sample, the rotation is driven to rotate, driving the arc-shaped cutter head 221 to rotate toward the inside of the sampling tube 210, and multiple arc-shaped cutter heads 221 can cut off the soil sample.

[0029] During actual operation, the sampling assembly 200 requires the sampling cylinder 210 to rotate when sampling so that the annular cutter head rotates to take samples. Therefore, 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, which is arranged at the output end of a motor 231; a guide ring 213, which is connected to one side of the sliding seat 212, and the guide ring 213 can rotate with the sliding seat 212, and the guide ring 213 is fixed to the sampling cylinder 210.

[0030] During the sampling process, the motor 231 drives the sliding seat 212 to rotate, and the guide ring 213 rotates along with the sliding seat 212 , and then drives the sampling tube 210 to rotate through the guide ring 213 .

[0031] In order to enable the guide ring 213 to rotate with the sliding seat 212 during sampling, in a specific example, a plurality of protrusions are evenly arranged on the outer wall of the guide ring 213, and a plurality of annular grooves 2122 are arranged at the bottom of the sliding seat 212 corresponding to the plurality of protrusions. The protrusions are slidably arranged in the corresponding annular grooves 2122, so that the sliding seat 212 and the guide ring 213 can rotate synchronously and slide relative to each other.

[0032] Based on the above explanation, in the process of cutting off the soil sample, the arc-shaped blade head 221 is driven by the rotating rod 222. In a specific example, a gear can be set at the top of the rotating rod 222, and the rotating rod 222 is rotated by driving multiple gears through the set motor, thereby causing the rotating rod 222 to rotate, and then the multiple arc-shaped blade heads 221 cut off the soil sample.

[0033] In another example described in the embodiments of the present application, a guide block 224 is fixedly connected to the top of the rotating rod 222 ; a curved groove 2125 corresponding to the guide block 224 is opened in the sliding seat 212 , and the guide block 224 is slidably configured in the corresponding curved groove 2125 .

[0034] Specifically, a rod groove 219 is provided on the bottom surface of the sliding seat 212 for rotating cooperation with the rotating rod 222. The upper end of the rotating rod 222 passes through the top surface of the sampling tube 210 and extends to the inside of the rod groove 219 and is fixed with a guide block 224. The inner wall of the rod groove 219 is provided with a curved groove 2125 for sliding cooperation with the guide block 224. The curved groove 2125 is arranged on the inner wall of the rod groove 219 in a spiral ascending structure.

[0035] When the soil sample in the sampling tube 210 needs to be cut, the sliding seat 212 slides relative to the guide ring 213. At this time, the guide block 224 moves along the threaded curved groove 2125. Driven by the curved groove 2125, the guide block 224 drives the rotating rod 222 to rotate, thereby causing the multiple curved blades 221 to rotate and 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 in the opposite direction, causing the multiple curved blades 221 to move away from the center of the sampling tube 210 until they are stored in the curved groove 218.

[0036] In the above technical solution, the holding and sliding of the sliding seat 212 relative to the guide ring 213 can be achieved by using a linear mechanism such as a hydraulic rod or an electric push rod. When soil sampling is required, the position between the sliding seat 212 and the guide ring 213 is kept unchanged. When the soil sample needs to be cut off, the linear mechanism drives the sliding seat 212 to move relative to the guide ring 213, so that the arc-shaped cutter head 221 can rotate.

[0037] In a specific example of the present application, a fixing ring 214 is provided at the top of the sampling tube 210, and the guide ring 213 is connected to one side of the fixing ring 214; the sampling assembly 200 also includes a plurality of support blocks 215, one end of the plurality of support blocks 215 is rotatably provided in the fixing ring 214 through a first elastic member 2152, and the other end of the plurality of support blocks 215 can abut against the sliding seat 212.

[0038] Among them, multiple support blocks 215 are arranged in an L shape; in the first state, one end of the support block 215 abuts against the sliding seat 212 so that the sliding seat 212 and the guide ring 213 are relatively fixed; in the second state, the support block 215 rotates to release the abutment on the sliding seat 212, so that the sliding seat 212 can slide relative to the guide ring 213.

[0039] 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 inclined structures with the upper ends offset inward. A block groove 2124 is provided at the bottom edge of the sliding seat 212 to be plugged into the upper ends of the support blocks 215. A through groove 2141 is provided on the fixing ring 214 to be slidably matched with the lower part of the support block 215. The lower part of the support block 215 extends through the through groove 2141 to the bottom of the fixing ring 214 and is connected to the hinge shaft 214. 151 is rotatably connected to the through groove 2141. When the bottom surface of the fixing ring 214 is in contact with the ground, the lower end of the support block 215 is squeezed into contact with the ground. The inner wall of the through groove 2141 is provided with an axis groove 2142 which is rotatably matched with the hinge shaft 2151. The outer wall of the hinge shaft 2151 is sleeved with a first elastic member 2152. The end of the first elastic member 2152 away from the hinge shaft 2151 is connected and fixed to the inner wall of the axis groove 2142; wherein, the first elastic member 2152 can be a torsion spring or other element with torsional resilience.

[0040] In the above technical solution, the first state is the state in which the sliding seat 212 and the guide ring 213 remain relatively fixed. At this time, the top end of the support block 215 is in contact with the block groove 2124 on the bottom surface of the sliding seat 212, and the bottom end of the support block 215 is rotatably set 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 fixing ring 214 is in contact with the ground, the extended part can be squeezed and contacted with the ground to cause the support block 215 to rotate, and then the top end of the support block 215 is released from the contact with the sliding seat 212, so that the sliding seat 212 can slide relative to the guide ring 213, which is the aforementioned second state.

[0041] In a specific example of the present application, a limiting platform is provided on one side of the guide ring 213 and the sliding seat 212; and a plurality of second elastic members 2123 are provided between the two limiting platforms.

[0042] The setting of the limit platform makes the inner wall of the guide ring 213 and the ring groove 2122 both have an L-shaped structure, and a plurality of second elastic members 2123 are fixed between the inner top surface of the guide ring 213 and the bottom surface of the ring groove 2122; among them, the second elastic members 2123 can be selected from elements with tensile resilience such as tension springs.

[0043] The second elastic member 2123 is provided so that the guide ring 213 and the sliding seat 212 can be driven to move away from each other when the sliding seat 212 and the guide ring 213 need to be separated.

[0044] Compared with the solution using a linear mechanism, the above technical solution can reduce the investment in power equipment. The use of a mechanical structure can achieve relative fixation and relative sliding of the sliding seat 212 and the guide ring 213, and is more suitable for outdoor open area operations.

[0045] Preferably, a plurality of inserting rods 216 are provided at the bottom end of the sliding seat 212 , and the bottom ends of the inserting rods 216 are connected to two clamping blocks 217 ; a slot 2143 is correspondingly provided on the top surface of the fixing ring 214 , and a clamping groove 2144 is provided in the slot 2143 corresponding to the clamping block 217 .

[0046] Specifically, an insert rod 216 is fixed at a position between two adjacent block grooves 2124 on the bottom surface of the sliding seat 212. The lower part of the insert rod 216 is a U-shaped structure, and two clamping blocks 217 are symmetrically fixed to the lower end of the insert rod 216. The top surface of the fixing ring 214 is provided with a slot 2143 that is plugged into and cooperates with the insert rod 216, and the inner wall of the slot 2143 is provided with a clamping slot 2144 that is clamped into and cooperates with the clamping block 217.

[0047] Through the arrangement of the above technical solution, when the sliding seat 212 and the guide ring 213 move relative to each other, the insertion rod 216 can move toward the slot 2143 until the block 217 is engaged in the corresponding slot 2144. At this time, driven by the curved groove 2125, the rotating rod 222 drives the arc-shaped blade heads 221 to approach each other, and the cutting blade head 223 rotates to the innermost end to form a closed structure to support the cut soil sample; when the sampling tube 210 moves upward, in the absence of external force, the block 217 can remain engaged in the slot 2144, so that the arc-shaped blade head 221 and the cutting blade head 223 can continue to support the soil sample.

[0048] In another embodiment, a pedal 110 is fixedly mounted on one side of the fixed base 100. Two handles 2121 are rotatably mounted on the top of the sliding base 212. Two support plates 120 are positioned opposite each other at the top of the fixed base 100, and the motor 231 is slidably disposed between the two support plates 120 via two connecting rods 140. A support plate 160 is fixedly mounted on one side of the two support plates 120. When the handles 2121 reach their highest point, their bottom surfaces can slide in contact with the top surfaces of the support plates 160.

[0049] Specifically, the fixed seat 100 is an annular structure and is coaxially arranged with the sampling tube 210. A pedal 110 is fixedly provided on the front wall of the fixed seat 100. Two support plates 120 are symmetrically fixedly provided on the rear part of the top surface of the fixed seat 100. The motor 231 is slidingly connected to the two support plates 120 through two connecting rods 140. The outer wall of the fixed ring 214 is rotatably connected to the lifting seat 130. Two connecting plates 150 are symmetrically fixedly provided on both sides of the top surface of the lifting seat 130. The connecting plates 150 are L-shaped structures. The two connecting plates 150 are slidingly connected to the corresponding support plates 120 respectively. A support plate 160 is fixedly provided on the upper end of the front wall of the support plate 120. When the handle 2121 moves to the highest point, the bottom surface can slide in contact with the top surface of the support plate 160. A stop block 170 is fixedly provided on the front wall of the support plate 120, and the bottom surface of the stop block 170 is in extrusion contact with the top surface of the connecting plate 150.

[0050] Working principle: After the road infrastructure is completed, the staff can move the device to the site and randomly select a roadbed to be sampled and tested. After placing the device on the ground, the sampling work can be started. First, the staff needs to use the motor 231 to drive the sliding seat 212 to rotate. During the rotation of the sliding seat 212, the guide ring 213 will be driven to rotate through the annular groove 2122 on its bottom surface, and then the sampling tube 210 will rotate under the drive of the driving mechanism 230.

[0051] Then the staff can step on the pedal 110 to stabilize the device to prevent the reaction force generated by the cutting head 211 when it contacts the ground from tilting the device. After stabilization, the staff can gently turn the handle 2121 so that the two handles 2121 are not in contact with the corresponding support plate 160. The sliding seat 212 that loses the support force of the support plate 160 will slide down under the action of gravity. The staff can also apply pressure to the sampling assembly 200 through the handle 2121 to make it move downward and cut the road surface through the cutting head 211. A plurality of continuous cutting teeth are provided on the bottom surface of 211. Such a design evenly distributes the cutting force to the plurality of cutting teeth, which can not only improve the drilling efficiency, but also avoid single-point stress concentration, reduce the risk of cutter head breakage, and increase the service life of the device. In the process of the sampling tube 210 drilling into the formation, because a plurality of support blocks 215 are inserted in the block groove 2124 to provide a supporting effect on the sliding seat 212, external force will not affect the distance between the sliding seat 212 and the fixed ring 214, thereby avoiding the premature operation of the cutter mechanism 220.

[0052] When the lower part of the sampling tube 210 is completely immersed in the road surface and the bottom surface of the fixing ring 214 and the bottom surface of the lifting seat 130 rotatably connected thereto are both in contact with the road surface, the bottom surfaces of the connecting plates 150 fixed on both sides of the lifting seat 130 are also in contact with the top surface of the fixing seat 100. At the same time, the lower end of the support block 215 will also contact the ground and rotate into the through groove 2141 under the reaction force of the ground. When the bottom surface of the support block 215 is flush with the bottom surface of the fixing ring 214, the upper end of the support block 215 will move out of the block groove 2124, and then the sliding seat 212 will lose the supporting force provided by the support block 215. Under the continued force applied by the staff, the sliding seat 212 can slide down along the direction of its sliding connection with the guide ring 213, and the second elastic member 2123 between the guide ring 213 and the ring groove 2122 is also stretched by the force.

[0053] On the other hand, as the sliding seat 212 slides down, the top surface of the rod groove 219 will also approach the top surface of the rotating rod 222. The reduction in the distance between the two will also cause the corresponding positions of the guide block 224 and the curved groove 2125 to change. Because the curved groove 2125 is arranged in a spiral ascending 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 squeezing of the curved groove 2125 on the guide block 224, which will then cause the multiple arc-shaped blades 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 it spans, the deflection angle of the arc-shaped blade 221 can be controlled, and then under the deflection of the multiple arc-shaped blades 221, the bottom of the existing sample inside the sampling tube 210 can be cut to separate it from the ground.

[0054] It is worth mentioning that a truncation head 223 is also fixed on the arc-shaped blade head 221. Multiple truncation heads 223 will eventually be spliced ​​into a closed structure at the axial position of the sampling tube 210. In addition, the arc-shaped blade head 221 cuts off the remaining part of the connection between the ground and the sample. In this way, the sample can be fully separated from the ground, avoiding damage or loss caused by the sample being pulled off when it is lifted out of the ground. In the process of lifting the sample out of the ground, multiple blade heads can also play a lifting effect to prevent the sample from falling out of the sampling tube 210 prematurely, further improving the sampling convenience of the staff and increasing the integrity of the sample again.

[0055] When the cutting mechanism 220 is in operation, the sliding seat 212 and the fixing ring 214 are still moving in a state of continuous approach. When the multiple cutting heads 223 are spliced, the top surface of the fixing ring 214 and the bottom surface of the sliding seat 212 will also fit each other. At this time, the insertion rod 216 will be inserted into the slot 2143, and the card block 217 will also be stuck in the card groove 2144, thus completing the mutual fixation between the sliding seat 212 and the fixing ring 214. Then, after the sampling is completed, when the staff stops the operation of the driving mechanism 230 and pulls up the sampling tube 210, the sliding seat 212 and the fixing ring 214 will not separate first, causing the sample to fall out prematurely.

[0056] The support plates 120 on both sides of the device are set higher, so that when the staff completely lifts the sampling tube 210 out of the ground, the top surface of the connecting plate 150 will fit with the bottom surface of the stopper 170 without affecting the connection between the sliding seat 212 and the fixing ring 214. At this time, the staff can move the sample to the designated location by moving the device, and then continue to pull up the handle 2121 to pull the insertion rod 216 out of the slot 2143. The upper and lower walls of the block 217 are both curved structures, so its insertion or extraction into the slot 2144 is not subject to rigid restrictions. The toughness of the U-shaped structure at the lower end of the insertion rod 216 Under the action of force, the card block 217 can be easily inserted into or pulled out of the card slot 2144. After the restriction is released, the sliding seat 212 and the fixed ring 214 will quickly separate under the influence of the upward pulling force of the staff and the gravity of the sampling tube 210 itself. At the same time, the cut-off mechanism 220 will also be retracted into the arc groove 218. With the assistance of the rebound force of multiple second elastic members 2123, the cut-off mechanism 220 can be easily reset, reducing the physical exertion of the staff. When the cut-off mechanism 220 is reset, the lower open end of the sampling tube 210 is opened, and then the sample can slide out of the sampling tube 210, and the staff only needs to put it into the test.

[0057] It is worth mentioning that the device is also provided with a support plate 160. When the staff lifts the sliding seat 212 to the highest point, they can slightly turn the handles 2121 so that the bottom surface of one of the handles 2121 corresponds to the top surface of the support plate 160. In this way, the handle 2121 can be stuck and the height of the sampling component 200 can be limited, which makes it convenient for the staff to move and store the device and prevent the sampling component 200 from sliding down due to gravity during the movement of the device.

[0058] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A road subgrade construction detection sampling device, characterized in that: include: a fixed base configured to support the components and mechanisms; a sampling assembly disposed in the fixing seat and configured to take a sample from the roadbed; Wherein, the sampling component comprises: The sampling cylinder is rotatably arranged on the inner side of the fixed seat; The cutting mechanism is arranged in the sampling cylinder and comprises a plurality of arc-shaped cutting heads rotatably arranged on one side of the sampling cylinder. The plurality of arc-shaped cutting heads are driven to rotate toward the inside of the sampling cylinder to cut off the soil sample in the sampling cylinder.

2. The road subgrade construction detection sampling device according to claim 1, characterized in that: One end of each of the arc-shaped blades is provided with a cutting blade; When the plurality of arc-shaped blade heads are driven to rotate to cut off the soil sample, the plurality of cutting blade heads come into contact with each other to support the cut soil sample.

3. The road subgrade construction detection sampling device according to claim 1, characterized in that: The sampling tube is provided with an arc-shaped groove for accommodating the arc-shaped cutter head; One end of each arc-shaped cutter head is provided with a rotating rod, and the rotating rod is rotatably arranged at the corresponding arc-shaped groove. The rotating rod is driven to drive the arc-shaped cutter head to rotate.

4. The road subgrade construction detection sampling device according to claim 3, characterized in that: The sampling tube is driven by a driving mechanism; Wherein, the driving mechanism includes: A sliding seat is provided at an output end of a motor; 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 fixed to the sampling tube.

5. The road subgrade construction detection sampling device according to claim 4, characterized in that: The top end of the rotating rod is fixedly connected with a guide block; A curved groove is provided in the sliding seat corresponding to the guide block, and the guide block is slidably arranged in the corresponding curved groove.

6. The road subgrade construction detection sampling device according to claim 4, characterized in that: A fixing ring is provided at the top of the sampling tube, and the guide ring is connected to one side of the fixing ring; The sampling assembly further comprises a plurality of support blocks, one end of each of the support blocks being rotatably disposed in the fixing ring via a first elastic member, and the other end of each of the support blocks being capable of contacting the sliding seat.

7. The road subgrade construction detection sampling device according to claim 6, characterized in that: The plurality of support blocks are arranged in an L shape; In the first state, one end of the support block abuts against the sliding seat so that the sliding seat and the guide ring are relatively fixed; In the second state, the support block rotates to release the interference with the sliding seat, so that the sliding seat can slide relative to the guide ring.

8. The road subgrade construction detection sampling device according to claim 4, characterized in that: A limiting platform is provided on one side of the guide ring and the sliding seat; A plurality of second elastic members are arranged between the two limiting platforms.

9. The road subgrade construction detection sampling device according to claim 6, characterized in that: The bottom end of the sliding seat is provided with a plurality of plug rods, and the bottom ends of the plug rods are connected with two clamping blocks; A slot is correspondingly provided on the top surface of the fixing ring, and a clamping slot is correspondingly provided in the slot and in the clamping block.

10. The road subgrade construction detection sampling device according to any one of claims 1 to 9, characterized in that: A pedal is fixedly arranged on one side of the fixing seat.

11. The road subgrade construction detection sampling device according to claim 4, characterized in that: Two handles are rotatably provided on the top of the sliding seat; Two supporting plates are arranged opposite to each other on the top of the fixing seat, and the motor is slidably arranged between the two supporting plates through two connecting rods.

12. The road subgrade construction detection sampling device according to claim 11, characterized in that: A supporting plate is fixedly provided on one side of the two support plates, and when the handle moves to the highest point, the bottom surface can slide in contact with the top surface of the supporting plate.

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