Punching and sampling device for road construction detection

Abstract

The invention relates to the technical field of sampling devices, in particular to a punching and sampling device for road construction detection, which comprises a frame, a push rod is fixedly mounted at the top end of the frame close to the edge, a switch box is mounted on the push rod, a plurality of groups of buttons are arranged on the switch box, and a sample storage box is mounted at the top end of the frame. A bottom plate is fixedly connected to the bottom end of the frame, a storage battery is arranged at the top end of the bottom plate, a sampling hole is formed in the middle of the top end of the bottom plate in a penetrating mode, and the device further comprises a drilling driving mechanism and a drilling mechanism. Through mutual cooperation of the drilling driving mechanism, the drilling mechanism and the sampling mechanism, the outer surface of a core sample entering the sample storage device can be prevented from being rubbed and disturbed when frozen soil is punched and sampled; therefore, the situation that the original state of the core sample is damaged due to the fact that the core sample is extruded and rubbed in the sampling process is eradicated, the original state of the frozen soil is sampled, and the accuracy of frozen soil detection in the later period is greatly improved.

Description

Technical Field

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

[0002] Road construction can be broadly understood as a key link in highway construction. It involves many aspects from road design, measurement, investigation to actual construction, maintenance, management, etc. During the road construction process, in order to ensure the stability and strength of the roadbed and improve the construction quality and safety, the requirements for soil quality are very strict. Due to the permafrost layer in Tibet and other regions, and due to the special physical properties of permafrost and its extreme sensitivity to temperature changes, roads built in Tibet and other regions are prone to frost heave or thaw settlement. Periodic frost heave and thaw settlement will cause repeated deformation of the roadbed and pavement, which will not only affect the stability of the roadbed, but may also cause damage to the pavement, seriously affecting the service life of the road and driving safety. In order to avoid the above situation, staff need to sample the original soil of the frozen soil roadbed before road construction.

[0003] Existing drilling sampling devices all use an engine to drive a sampling tube to drill a cylindrical sample on the soil surface, and then move the sampling tube upward to take out the sample to complete soil sampling. However, when sampling the soil by drilling the sampling tube, the inner wall of the sampling tube will rub against the outer surface of the soil core sample, which can easily cause damage to the surface of the soil core sample, and the sampling tube will squeeze the soil core sample that is entering it. If frozen soil is sampled, such squeezing can easily cause the frozen soil core sample to be compressed and melted, thereby destroying the original structure of the frozen soil core sample, thereby greatly reducing the accuracy of frozen soil detection and having poor practicality. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the punching sampling device in the prior art is very easy to destroy the original structure of the frozen soil core sample when sampling the frozen soil, and to propose a punching sampling device for road construction detection.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical scheme: a punching sampling device for road construction detection, comprising a frame, a push rod is fixedly installed at the top of the frame near the edge, a switch box is installed on the push rod, and a plurality of buttons are arranged on the switch box, a sample storage box is installed at the top of the frame, and a bottom plate is fixedly connected to the bottom of the frame, a battery is arranged at the top of the bottom plate, and a sampling hole is penetrated at the middle position of the top of the bottom plate, and further comprising:

[0006] A drilling drive mechanism and a drilling mechanism, wherein the drilling drive mechanism is arranged on a vehicle frame and is used to rotate and move the drilling mechanism downward, the drilling mechanism is located directly above the sampling hole, and the drilling mechanism comprises an inner cylinder, an inner cavity is provided inside the inner cylinder, and the inner cylinder is detachably mounted on the bottom end of the drilling drive mechanism, a positioning platform is fixedly mounted near the bottom end of the inner cavity, a plurality of flanges are arranged at the inner diameter of the positioning platform, a plurality of spiral tool handles are evenly wound around the outer wall of the inner cylinder, and the inner cylinder is fixedly connected to the outer cylinder through the plurality of tool handles, a tool head is mounted on the bottom end of the plurality of tool handles, and the top end of the tool head is respectively fixedly connected to the inner cylinder, the outer cylinder and the bottom end of the positioning platform;

[0007] A sampling mechanism, the sampling mechanism comprises a retracting assembly and a sample storage container, the retracting assembly is arranged at the top of the frame, and is used to pull up or lower the sample storage container, the sample storage container is located in the inner cavity, and the bottom end of the sample storage container is in contact with the top end of the positioning platform, the inner diameter of the sample storage container is larger than the inner diameter of the positioning platform, and the outer diameter of the sample storage container is smaller than the diameter of the inner cavity, two groups of notches are symmetrically opened at the top of the sample storage container, and bosses are fixedly installed at the positions of the notches on the inner wall of the sample storage container, a cutting support assembly is jointly arranged on the sample storage container and the bosses, and is used to divide the core sample entering the sample storage container and prevent the core sample entering the sample storage container from falling, and the sample storage container is detachably connected to the retracting assembly through the cutting support assembly;

[0008] The fixing mechanism is arranged on the bottom plate and is used to fix the entire sampling device.

[0009] Preferably, the drilling drive mechanism includes a cylinder, a fuel tank and a rotating shaft, the cylinder and the fuel tank are both fixedly mounted on the top of the frame, the output end of the fuel tank is connected to the input end of the cylinder through a hose, and the output end of the cylinder passes through the frame and is fixedly connected to a mounting plate, the rotating shaft passes through the top of the mounting plate and is rotatably connected to the mounting plate, and a cover plate is fixedly connected to the bottom end of the rotating shaft, an internal thread is provided at the inner cavity near the top, an external thread is provided on the outer side wall of the cover plate, and the cover plate is threadably connected to the inner cylinder through the external thread, and a rotating component is commonly provided on the mounting plate and the rotating shaft for driving the rotating shaft to rotate.

[0010] Preferably, the rotating component includes a motor and a second pulley, the motor is fixedly mounted on the top of the mounting plate, and the output end of the motor passes through the mounting plate and is fixedly connected to a first pulley, the second pulley is fixedly sleeved on the outer wall of the rotating shaft, and a synchronous belt is commonly sleeved on the first pulley and the second pulley.

[0011] Preferably, the winding and pulling assembly includes a winch and a fixed pulley, and the winch and the fixed pulley are both fixedly mounted on the top of the frame. The winch consists of a drum, a support frame, a servo motor and a steel wire rope, and the steel wire rope is in contact with the top of the fixed pulley, and the end of the steel wire rope away from the winch and the fixed pulley passes through the top wall of the frame, the rotating shaft and the cover plate in sequence, and extends into the inner cavity. The part of the steel wire rope located in the inner cavity is divided into two groups of steel wire connecting ropes, and the bottom ends of the two groups of steel wire connecting ropes are fixedly connected with hooks, and the sample storage device is detachably connected to the two groups of hooks on the winding and pulling assembly by cutting the support assembly.

[0012] Preferably, the cutting support assembly comprises two groups of storage grooves, the two groups of storage grooves are symmetrically opened on the inner wall of the sample storage container near the bottom opening, and steel wires are arranged in the two groups of storage grooves, one end of the two groups of steel wires are respectively fixedly connected to the side walls of one side of the two groups of storage grooves, and the other ends of the two groups of steel wires penetrate through the other side walls of the two groups of storage grooves and the bottom wall of the boss in sequence, and are fixedly connected with hanging rings, the two groups of hanging rings are respectively located at the two groups of notches on the sample storage container, the sample storage container is hung on the two groups of hooks on the pulling assembly through the two groups of hanging rings on the cutting support assembly, and a supporting component is jointly installed on the boss and the two groups of steel wires to prevent the core sample inside the sample storage container from falling.

[0013] Preferably, the supporting component includes multiple groups of steel wires 2, which are evenly installed on the outer wall of the two groups of steel wires 1 located in the inner part of the storage groove, and the inner walls of the two groups of storage grooves are evenly penetrated with multiple groups of wire inlet holes, and the outer wall of the sample storage container is evenly penetrated with multiple groups of wire outlet holes near the top position, and the ends of the multiple groups of steel wires 2 away from the steel wires 1 respectively pass through the multiple groups of wire inlet holes and the multiple groups of wire outlet holes and are fixedly connected with tension springs, and the ends of the multiple groups of tension springs away from the steel wires 2 are fixedly connected to the side wall of the protrusion of the boss.

[0014] Preferably, the fixing mechanism includes four groups of positioning holes and four groups of ground nails. The four groups of positioning holes are symmetrically arranged in pairs and penetrate the top of the bottom plate. The four groups of ground nails are placed inside the sample storage box. The ground nail consists of a head and a drill bit. A positioning part is fixedly installed above the outer wall of the drill bit, and the positioning part is a conical tap structure.

[0015] Preferably, it also includes a sealing mechanism, which includes a bottom cover. The bottom cover is placed inside the sample storage box, and the diameter of the bottom cover is slightly smaller than the inner diameter of the sample storage container. A plurality of groups of feet are evenly installed near the edge of the bottom end of the bottom cover.

[0016] Preferably, a handle is installed at the center of the bottom end of the bottom cover, and the height of the handle is lower than the height of the bottom foot.

[0017] Preferably, two sets of lifting mechanisms are symmetrically arranged on the bottom plate, and the bottom plate is respectively connected to two sets of moving mechanisms through the two sets of lifting mechanisms.

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] 1. The present invention can quickly and conveniently perform drilling and sampling of frozen soil through the cooperation of the drilling drive mechanism, the drilling mechanism and the sampling mechanism. When drilling and sampling frozen soil, the outer surface of the core sample entering the sample storage device can be prevented from being rubbed and disturbed, thereby preventing the core sample from being squeezed and rubbed during sampling, causing the core sample to be damaged, compressed, melted, or otherwise destroyed. This ensures the sampling of the frozen soil in its original state, greatly improving the accuracy of later frozen soil detection.

[0020] 2. The present invention, through the setting of the cutting support assembly in the sampling mechanism, can cooperate with the upward movement of the wire rope to cut the bottom of the core sample entering the sample storage container, and can support the bottom of the core sample while cutting, thereby preventing the cut core sample from falling from the sample storage container, ensuring the smooth removal of the frozen soil core sample, and reducing the possibility of re-drilling and sampling due to sampling failure, thereby greatly improving the efficiency and success rate of frozen soil sampling.

[0021] 3. The present invention can perform multiple frozen soil sampling by replacing the sample storage device through the setting of the hook in the retracting assembly and the setting of the hanging ring in the cutting support assembly, and the frozen soil core samples taken out can be placed in the sample storage box with the sample storage device for constant temperature storage, thereby ensuring the integrity of the frozen soil core samples after taking out while better maintaining the original state of the frozen soil core samples in the sample storage device, thereby improving the accuracy of frozen soil detection, and the sample storage device can be replaced by simple hanging, which is simple and convenient to operate, easy to use, and improves the efficiency of frozen soil sampling.

[0022] 4. The present invention can fix the entire sampling device on the frozen soil through the ground nails by setting the fixing mechanism, so that the sampling device can adapt to different terrains such as flat ground and slopes for sampling. In addition, the setting of the drill bit and the positioning part in the ground nail can overcome the problem that conventional nails are difficult to drive into the hard frozen soil layer and are prone to breakage when driven into the frozen soil layer, thereby extending the life of the ground nails and allowing the ground nails to be used multiple times, thereby improving the efficiency of frozen soil sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a working schematic diagram of a punching sampling device for road construction detection proposed by the present invention;

[0024] Figure 2 It is a rear isometric view of a punching sampling device for road construction detection proposed by the present invention;

[0025] Figure 3 This is an axonometric view of a ground nail in a drilling sampling device for road construction detection proposed by the present invention;

[0026] Figure 4 It is a first isometric view of a drilling mechanism in a drilling sampling device for road construction detection proposed by the present invention;

[0027] Figure 5 A half-section axonometric diagram of a drilling mechanism in a drilling sampling device for road construction detection proposed by the present invention;

[0028] Figure 6 A second axonometric diagram of a drilling mechanism in a drilling sampling device for road construction detection proposed by the present invention;

[0029] Figure 7 This is an axonometric diagram of a sample storage device in a punching sampling device for road construction detection proposed by the present invention;

[0030] Figure 8 This is a bottom isometric view of a sample storage device in a punching sampling device for road construction detection proposed by the present invention;

[0031] Fig. 9 A partial view of a sample storage device in a punch sampling device for road construction detection proposed by the present invention Figure X ;

[0032] Fig.10 A side view of a sample storage device in a punching sampling device for road construction detection proposed by the present invention;

[0033] Fig.11 A cross-sectional view AA of a sample storage device in a punching sampling device for road construction detection proposed by the present invention;

[0034] Fig.12 A partial view Y of a sample storage device in a punching sampling device for road construction detection proposed by the present invention;

[0035] Fig.13 A partial view Z of a sample storage device in a punching sampling device for road construction detection proposed by the present invention;

[0036] Fig.14 This is a cross-sectional view BB of a sample storage device in a punching sampling device for road construction detection proposed by the present invention.

[0037] In the figure: 1, frame; 2, battery; 3, sample box; 4, oil cylinder; 5, winch; 6, switch box; 7, fixed pulley; 8, drilling mechanism; 9, oil tank; 10, ground nail; 11, sample storage; 12, bottom cover; 101, moving mechanism; 102, push rod; 103, bottom plate; 104, positioning hole; 105, sampling hole; 51, servo motor; 52, wire rope; 521, hook; 81, mounting plate; 82, motor; 8 3. Rotating shaft; 84. Cover plate; 85. Outer cylinder; 86. Cutting head; 87. Inner cylinder; 88. Knife handle; 89. Inner cavity; 810. Positioning platform; 1001. Head; 1002. Positioning part; 1003. Drill bit; 111. Hanging ring; 112. Tension spring; 113. Boss; 114. Steel wire one; 115. Steel wire two; 116. Storage groove; 117. Wire outlet hole; 118. Wire inlet hole; 121. Bottom foot; 122. Handle. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0039] Reference Figure 1 to Figure 2 A punching sampling device for road construction detection includes a frame 1, a push rod 102 is fixedly installed at the top of the frame 1 near the edge, a switch box 6 is installed on the push rod 102, and a plurality of buttons are arranged on the switch box 6, and the operation of each mechanism in the sampling device is controlled by the buttons, a sample storage box 3 is installed on the top of the frame 1, and a bottom plate 103 is fixedly connected to the bottom of the frame 1, two groups of lifting mechanisms are symmetrically arranged on the bottom plate 103, and the bottom plate 103 is respectively connected to two groups of moving mechanisms 101 through the two groups of lifting mechanisms, the lifting mechanism and the moving mechanism 101 are both prior art, and their specific structural design is not repeated here, and the moving mechanism 101 is used to make the entire sampling device The lifting mechanism is used to lift the moving mechanism 101. When the sampling device needs to be moved, the lifting mechanism is controlled by pressing the button on the switch box 6 so that the moving mechanism 101 contacts the ground and the sampling device is suspended. At this time, the sampling device can start to move by pushing the push rod 102. When the sampling device moves to the sampling point, the button on the switch box 6 is pressed again to make the moving mechanism 101 move up and reset under the action of the lifting mechanism until the sampling device is placed on the ground. A battery 2 is provided at the top of the bottom plate 103 for powering the sampling device, and a sampling hole 105 is penetrated at the middle position of the top of the bottom plate 103.

[0040] Reference Figures 1 to 3, a fixing mechanism is provided on the bottom plate 103 for fixing the entire sampling device, the fixing mechanism includes four groups of positioning holes 104 and four groups of ground nails 10, the four groups of positioning holes 104 are symmetrically arranged in pairs at the top of the bottom plate 103, the four groups of ground nails 10 are placed in the sample storage box 3, the ground nail 10 consists of a head 1001 and a drill bit 1003, a positioning portion 1002 is fixedly installed on the outer wall of the drill bit 1003, and the positioning portion 1002 is a tapered tap structure. The staff uses a drill gun to drive the ground nails 10 into the ground through the positioning holes 104 in turn, and the head 1001 on the ground nail 10 is drilled together with the drill bit 1003. The gun cooperates with the drill bit 1003 to drill into the ground and form a bottom hole. Since the positioning part 1002 is a tapered tap structure, the positioning part 1002 is used to tap the bottom hole in the ground so that the ground nail 10 presses the bottom plate 103 firmly, so that the sampling device can be fixed on the frozen soil, and then the sampling device can adapt to different terrains such as flat ground and slopes for sampling. The arrangement of the drill bit 1003 and the positioning part 1002 in the ground nail 10 can overcome the problem that conventional nails are difficult to drive into hard frozen soil layers and are prone to breakage when driven into frozen soil layers, thereby extending the life of the ground nail 10.

[0041] Reference Figures 1 to 6A drilling drive mechanism is provided on the frame 1, and a drilling mechanism 8 is detachably installed at the bottom end of the drilling drive mechanism. The drilling drive mechanism is used to rotate and move the drilling mechanism 8 downward. The drilling mechanism 8 is located directly above the sampling hole 105. The drilling drive mechanism includes a cylinder 4, a fuel tank 9 and a rotating shaft 83. The cylinder 4 and the fuel tank 9 are fixedly installed on the top of the frame 1. The output end of the fuel tank 9 is connected to the input end of the cylinder 4 through a hose. The fuel tank 9 is used to store oil and supply oil to the cylinder 4. The output end of the cylinder 4 passes through the frame 1 and is fixedly connected to a mounting plate 81. The rotating shaft 83 passes through the top of the mounting plate 81 and is rotatably connected to the mounting plate 81. A cover plate 84 is fixedly connected to the bottom end of the rotating shaft 83. The rotating shaft 83 is detachably connected to the drilling mechanism 8 through the cover plate 84. A rotating component is commonly provided on the mounting plate 81 and the rotating shaft 83 for driving the rotating shaft 83 to rotate. The rotating component includes a motor 82 and a pulley 2. The electric The machine 82 is fixedly mounted on the top of the mounting plate 81, and the output end of the motor 82 passes through the mounting plate 81 and is fixedly connected with a pulley 1, and the pulley 2 is fixedly sleeved on the outer wall of the rotating shaft 83. The pulleys 1 and 2 are jointly sleeved with a synchronous belt. The drilling mechanism 8 includes an inner cylinder 87, and an inner cavity 89 is opened inside the inner cylinder 87. The inner cavity 89 is opened with an internal thread near the top position. The outer wall of the cover plate 84 is provided with an external thread, and the cover plate 84 is threadedly connected to the inner cylinder 87 through the external thread. A positioning platform 810 is fixedly installed near the bottom position of the inner cavity 89, and multiple groups of flanges are provided at the inner diameter of the positioning platform 810. Multiple groups of spiral tool handles 88 are evenly wound on the outer wall of the inner cylinder 87, and the inner cylinder 87 is fixedly connected to the outer cylinder 85 through multiple groups of tool handles 88. The bottom ends of the multiple groups of tool handles 88 are all equipped with cutter heads 86, and the top ends of the cutter heads 86 are respectively fixedly connected to the inner cylinder 87, the outer cylinder 85 and the bottom ends of the positioning platform 810.

[0042] Reference Figures 1 to 7A sampling mechanism is provided on the frame 1 and in the inner cylinder 87. The sampling mechanism includes a retracting assembly and a sample storage device 11. The retracting assembly is provided at the top of the frame 1 and is used to pull up or lower the sample storage device 11. The retracting assembly includes a winch 5 and a fixed pulley 7. The winch 5 and the fixed pulley 7 are both fixedly installed at the top of the frame 1. The winch 5 consists of a drum, a support frame, a servo motor 51 and a wire rope 52. The winch 5 is a prior art, and its specific structural design is not repeated here. The wire rope 52 is in contact with the top of the fixed pulley 7. The setting of the fixed pulley 7 can guide the wire rope 52 and provide a stable guiding path for the wire rope 52 to avoid the wire rope 52 from tilting during movement. The end of the wire rope 52 away from the winch 5 and the fixed pulley 7 passes through the top wall of the frame 1, the rotating shaft 83 and the cover plate 84 in sequence, and Extending into the inner cavity 89, the portion of the steel wire rope 52 located in the inner cavity 89 is divided into two groups of steel wire connecting ropes, the bottom ends of the two groups of steel wire connecting ropes are fixedly connected with hooks 521, the sample storage container 11 is located in the inner cavity 89, and the bottom end of the sample storage container 11 contacts the top of the positioning platform 810, the inner diameter of the sample storage container 11 is larger than the inner diameter of the positioning platform 810, and the outer diameter of the sample storage container 11 is smaller than the diameter of the inner cavity 89, two groups of notches are symmetrically provided at the top of the sample storage container 11, and a boss 113 is fixedly installed at the position of the notch on the inner wall of the sample storage container 11, a cutting support assembly is jointly provided on the sample storage container 11 and the boss 113, which is used to divide the core sample entering the sample storage container 11 and prevent the core sample entering the sample storage container 11 from falling, and the sample storage container 11 is detachably connected to the two groups of hooks 521 on the retracting assembly through the cutting support assembly.

[0043] After the staff confirms that the drilling mechanism 8 is correctly installed and the wire rope 52 is not blocked, the sampling start button on the switch box 6 is clicked, and the motor 82 is energized to rotate the pulley 1. Under the action of the synchronous belt, the pulley 2 rotates together, thereby driving the drilling mechanism 8 to rotate, and at the same time, the oil cylinder 4 is turned on to make the mounting plate 81 move downward at a uniform speed. Then, the winch 5 lowers the wire rope 52 at a uniform speed as the mounting plate 81 moves downward. The drilling mechanism 8 passes through the sampling hole 105 and drills into the ground at a uniform speed. The cutter head 86 peels off the frozen soil on the ground. The spiral handle 88 on the upper part of the inner cylinder 87 and the outer cylinder 85 forms a spiral ascending channel, and the stripped soil spirally ascends along the handle 88 until it is discharged from the top of the drilling mechanism 8. As the soil is stripped and the drilling mechanism 8 is fed downward, the center of the drilling mechanism 8 forms a core sample for this sampling, and the core sample enters the inner cavity 89 at a uniform speed as the drilling mechanism 8 is fed downward. Since the bottom end of the sample storage 11 is in contact with the top end of the positioning platform 810, and the inner diameter of the sample storage 11 is larger than the inner diameter of the positioning platform 810, the core sample is formed in the center of the drilling mechanism 8. Therefore, the core sample entering the inner cavity 89 enters the sample storage 11, and the core sample entering the inner cavity 89 does not contact the inner cavity 89. At the same time, since the inner diameter of the sample storage 11 is larger than the inner diameter of the positioning platform 810, and the sample storage 11 is pulled by the wire rope 52, when the drilling mechanism 8 rotates, the sample storage 11 will not rotate together, thereby preventing the outer surface of the core sample from being rubbed and disturbed, thereby preventing the core sample from being damaged, compressed, melted, etc. due to squeezing and friction on the core sample during sampling. The situation of the sample storage 11 being shaken by the rotating drilling mechanism 8 can be avoided by setting the multiple sets of flanges to prevent the sample storage 11 from colliding with the outer wall of the core sample after shaking, thereby avoiding affecting the outer wall of the core sample and further ensuring the integrity of the frozen soil core sample structure.

[0044] Reference Figure 2 as well as Figures 5 to 14The cutting support assembly includes two groups of receiving grooves 116, and the two groups of receiving grooves 116 are symmetrically arranged on the inner wall of the sample storage container 11 near the bottom opening, and steel wires 114 are arranged in the two groups of receiving grooves 116, one end of the two groups of steel wires 114 is fixedly connected to the side walls of one side of the two groups of receiving grooves 116, and the other ends of the two groups of steel wires 114 respectively pass through the other side walls of the two groups of receiving grooves 116 and the bottom wall of the boss 113 in sequence, and are fixedly connected with hanging rings 111, and the two groups of hanging rings 111 are respectively located at the two groups of notches on the sample storage container 11, and the sample storage container 11 is hung on the two groups of hooks 521 on the pulling assembly through the two groups of hanging rings 111 on the cutting support assembly, and the boss 113 and the two groups of steel wires 111 are fixedly connected to the two groups of hooks 521 on the pulling assembly. 4 are jointly installed with a supporting component for preventing the core sample inside the sample storage container 11 from falling. The supporting component includes multiple groups of steel wires 115. The multiple groups of steel wires 115 are evenly installed on the outer wall of the two groups of steel wires 114 located in the inner part of the storage groove 116. Multiple groups of wire inlet holes 118 are evenly penetrated on the inner walls of the two groups of storage grooves 116. Multiple groups of wire outlet holes 117 are evenly penetrated near the top position of the outer wall of the sample storage container 11. One end of the multiple groups of steel wires 115 away from the steel wire 114 passes through the multiple groups of wire inlet holes 118 and the multiple groups of wire outlet holes 117 respectively, and is fixedly connected with a tension spring 112. One end of the multiple groups of tension springs 112 away from the steel wires 115 is fixedly connected to the side wall of the protrusion of the boss 113.

[0045] After the oil cylinder 4 reaches the stroke, the feedback signal is sent, and the motor 82 stops. At the same time, the servo motor 51 reverses a quarter turn to pull the wire rope 52, and the hook 521 pulls the hanging ring 111 upwards. In the space generated between the boss 113 and the cover plate 84, when the hanging ring 111 is pulled up, the steel wire 114 is also pulled up together. The two groups of steel wires 114 located in the two groups of receiving grooves 116 are quickly straightened from the receiving grooves 116 and move toward the middle position of the bottom end of the sample storage container 11, thereby cutting off the bottom of the core sample entering the sample storage container 11, and at the same time, the multiple groups of steel wires 2 115 connected to the steel wire 114 are also pulled out together and pulled together by the tension spring 1 Under the action of 12, it is always kept taut. Each group of steel wires 114 and the steel wire 2 115 above it form half a wire mesh. The two groups of steel wire meshes hold the core sample at the bottom of the sample storage container 11. Then, as the oil cylinder 4 is reset at a uniform speed, the drilling mechanism 8 is pulled out from the ground. The winch 5 drives the sample storage container 11 to move upward as the drilling mechanism 8 moves upward, and the wire mesh can be kept in an expanded state when the sample storage container 11 moves upward, thereby preventing the core sample from falling from the sample storage container 11, ensuring the smooth removal of the frozen soil core sample, reducing the possibility of re-drilling and sampling due to sampling failure, and greatly improving the efficiency and success rate of sampling.

[0046] Reference Figure 1 as well as Figures 7 and 8A sealing mechanism is placed inside the sample box 3 for sealing the bottom of the sample storage container 11. The sealing mechanism includes a bottom cover 12. The bottom cover 12 is placed inside the sample box 3, and the diameter of the bottom cover 12 is slightly smaller than the inner diameter of the sample storage container 11. A plurality of groups of feet 121 are evenly installed near the edge of the bottom end of the bottom cover 12, and a handle 122 is installed at the center of the bottom end of the bottom cover 12. The height of the handle 122 is lower than the height of the foot 121. After the oil cylinder 4 is fully reset, the staff will unscrew the drilling mechanism 8 and immediately remove it. The bottom cover 12 is covered into the bottom of the sample storage container 11, and then the sample storage container 11 is removed and placed in the sample storage box 3 for constant temperature storage. Under the rebound of the tension spring 112, the steel wire 2 115 is reset and the steel wire 1 114 is pulled back into the storage groove 116. At this time, since the bottom cover 12 has covered the bottom of the sample storage container 11, the core sample inside the sample storage container 11 will not fall out. If the core sample needs to be taken out, the experimenter only needs to remove the bottom cover 12 through the handle 122. The setting of the base foot 121 can ensure the stable placement of the sample storage container 11.

[0047] The present invention is applied to the sampling of undisturbed soil of a long-term frozen roadbed. The staff fully charges the battery 2 in advance. After the sampling device is transported to the site, the staff holds the push rod 102 and operates the sampling device through the switch box 6. First, the lifting mechanism is controlled by pressing the button on the switch box 6 so that the mobile mechanism 101 contacts the ground. At this time, the sampling device is suspended in the air. The sampling device is moved to the sampling point by pushing the push rod 102. After that, the staff fine-tunes the position of the sampling device to ensure that the center of the sampling hole 105 is located above the sampling point. Then, the staff presses the button on the switch box 6 so that the mobile mechanism 101 is reset under the action of the lifting mechanism and is retracted into the bottom plate 1. 03, so that the sampling device is placed on the ground. There are four groups of positioning holes 104 symmetrically distributed on the bottom plate 103. The staff uses a drill gun to drive the ground nails 10 into the ground through the positioning holes 104 in turn. The head 1001 on the ground nail 10 cooperates with the drill gun, so that the drill bit 1003 drills into the ground and forms a bottom hole. Since the positioning part 1002 is a conical tap structure, the positioning part 1002 is used to tap the bottom hole on the ground so that the ground nail 10 presses the bottom plate 103 firmly, so that the sampling device can be fixed on the frozen soil, and then the sampling device can adapt to different terrains such as flat ground and slopes for sampling. The arrangement of the head 1003 and the positioning portion 1002 enables it to overcome the problem that conventional nails are difficult to drive into hard frozen soil layers and are prone to breakage when driven into frozen soil layers, thereby extending the life of the ground nail 10. After that, the staff first hooks the two sets of hooks 521 on the end of the steel wire rope 52 passing through the rotating shaft 83 into the two sets of hanging rings 111 respectively, and then puts the sample storage container 11 into the inner cavity 89 of the drilling mechanism 8, and the bottom of the sample storage container 11 is placed on the positioning platform 810. The inner diameter of the positioning platform 810 is provided with multiple sets of flanges. Since the bottom end of the sample storage container 11 is in contact with the top end of the positioning platform 810, and the inner diameter of the sample storage container 11 is larger than the inner diameter of the positioning platform 810, diameter, and the outer diameter of the sample storage container 11 is smaller than the diameter of the inner cavity 89, so the outer wall of the sample storage container 11 does not contact the inner cavity 89, and the outer wall of the core sample passing through the positioning platform 810 and entering the inner cavity 89 does not contact the inner wall of the sample storage container 11. The setting of multiple sets of flanges allows the sample storage container 11 to move only within the range of the positioning platform 810, thereby preventing the sample storage container 11 from colliding with the outer wall of the core sample after shaking, thereby avoiding affecting the outer wall of the core sample. The cover plate 84 is connected to the inner cylinder 87 through an external thread. The staff connects the drilling mechanism 8 to the cover plate 84 through the internal thread on its inner cylinder 87, and then the motor 82 can drive the rotating shaft 83 to rotate through the synchronous belt.

[0048] After the staff confirms that the drilling mechanism 8 is correctly installed and the wire rope 52 is not blocked, they click the sampling start button on the switch box 6. The motor 82 is powered to drive the drilling mechanism 8 to rotate while the cylinder 4 extends at a uniform speed. The winch 5 then lowers the wire rope 52 at a uniform speed. The drilling mechanism 8 passes through the sampling hole 105 and drills into the ground at a uniform speed. The cutter head 86 strips the frozen soil on the ground. The spiral handles 88 on each cutter head 86 form spiral rising channels between the inner cylinder 87 and the outer cylinder 85. The stripped soil spirally rises along the handles 88 until it is discharged from the top of the drilling mechanism 8. As the soil is stripped and the drilling mechanism 8 is fed downward, the center of the drilling mechanism 8 is The core sample taken this time enters the inner cavity 89 at a uniform speed as the drilling mechanism 8 feeds the core sample at a uniform speed. Since the inner diameter of the sample storage container 11 is larger than the inner diameter of the positioning platform 810, the core sample entering the inner cavity 89 enters the sample storage container 11, and the sample storage container 11 is pulled by the wire rope 52 and does not rotate with the drilling mechanism 8. The core sample enters at a uniform speed without contacting the inner wall of the sample storage container 11, thereby avoiding friction and disturbance on the outer surface of the core sample, and preventing the occurrence of any situation that destroys the original state of the core sample due to squeezing and friction of the core sample during sampling, such as damage, compression, melting, etc., thereby ensuring the original sampling of the frozen soil, thereby improving the accuracy of the later frozen soil detection.

[0049] After the oil cylinder 4 reaches the stroke, the feedback signal is given, and the motor 82 stops. At the same time, the servo motor 51 reverses a quarter turn to pull the wire rope 52, and the hook 521 pulls the hanging ring 111 upward. One end of the wire 114 is connected to the side wall of the storage groove 116, and the other end passes through the other end of the storage groove 116 and then passes through the bottom wall of the boss 113 along the wall of the sample storage container 11, and is connected to the hanging ring 111. In the space generated between the boss 113 and the cover plate 84, the hanging ring 111 is 1 is pulled up, driving the steel wire 114 to be pulled up together. The two sets of steel wires 114 located in the two sets of receiving grooves 116 are quickly straightened from the receiving grooves 116 and move toward the middle position of the bottom end of the sample storage container 11, thereby cutting off the bottom of the core sample entering the sample storage container 11. At the same time, the multiple sets of steel wires 115 connected to the steel wire 114 are also pulled out together and are always kept taut under the action of the tension spring 112. Each set of steel wires 114 is connected to the steel wires 115 on it. 5 together form a half piece of wire mesh, and the two sets of wire mesh hold the core sample at the bottom of the sample storage 11. Then, as the oil cylinder 4 is reset at a uniform speed, the drilling mechanism 8 is pulled out from the ground. The winch 5 drives the sample storage 11 to move upward as the drilling mechanism 8 moves upward, and the wire mesh can be kept in an unfolded state when the sample storage 11 moves upward, thereby preventing the core sample from falling from the sample storage 11. After the oil cylinder 4 is completely reset, the staff will unscrew the drilling mechanism 8 and immediately remove the bottom cover. 12 is covered into the bottom of the sample storage container 11, and then the sample storage container 11 is removed and placed in the sample storage box 3 for constant temperature storage. Under the rebound of the tension spring 112, the steel wire 2 115 is reset and the steel wire 1 114 is pulled back into the storage groove 116. The bottom foot 121 ensures the stability of the placement, and the handle 122 is convenient for the test personnel to remove the bottom cover 12 and take out the core sample. After the staff unscrews the ground nails 10 in turn, they control the sampling device to lift the moving mechanism 101 and move it to the next sampling point and repeat the previous work.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A punching sampling device for road construction detection, comprising a frame (1), a push rod (102) fixedly mounted at the top of the frame (1) near the edge, a switch box (6) mounted on the push rod (102), a plurality of buttons arranged on the switch box (6), a sample storage box (3) mounted at the top of the frame (1), a bottom plate (103) fixedly connected to the bottom of the frame (1), a battery (2) arranged at the top of the bottom plate (103), and a sampling hole (105) penetrating at the middle position of the top of the bottom plate (103), characterized in that: Also includes: A drilling drive mechanism and a drilling mechanism (8), wherein the drilling drive mechanism is arranged on a vehicle frame (1) and is used to rotate and move the drilling mechanism (8) downward, the drilling mechanism (8) is located directly above the sampling hole (105), and the drilling mechanism (8) comprises an inner cylinder (87), an inner cavity (89) is provided inside the inner cylinder (87), and the inner cylinder (87) is detachably mounted at the bottom end of the drilling drive mechanism, and a positioning device is fixedly mounted near the bottom end of the inner cavity (89). The positioning platform (810) is provided with a plurality of flanges at the inner diameter thereof, a plurality of spiral knife handles (88) are evenly wound around the outer wall of the inner cylinder (87), and the inner cylinder (87) is fixedly connected to the outer cylinder (85) through the plurality of knife handles (88), and a knife head (86) is installed at the bottom end of the plurality of knife handles (88), and the top end of the knife head (86) is respectively fixedly connected to the bottom end of the inner cylinder (87), the outer cylinder (85) and the positioning platform (810); A sampling mechanism, the sampling mechanism comprising a retracting assembly and a sample storage (11), the retracting assembly being arranged at the top of a frame (1) and being used for pulling up or lowering the sample storage (11), the sample storage (11) being located in an inner cavity (89), and the bottom end of the sample storage (11) being in contact with the top end of a positioning platform (810), the inner diameter of the sample storage (11) being larger than the inner diameter of the positioning platform (810), and the outer diameter of the sample storage (11) being smaller than the diameter of the inner cavity (89), the top end of the sample storage (11) being symmetrically provided with two groups of notches, and a boss (113) being fixedly installed at the position of the notch on the inner wall of the sample storage (11), the sample storage (11) and the boss (113) being jointly provided with a cutting support assembly for dividing a core sample entering the sample storage (11) and preventing the core sample entering the sample storage (11) from falling, and the sample storage (11) being detachably connected to the retracting assembly via the cutting support assembly; A fixing mechanism is arranged on the bottom plate (103) and is used to fix the entire sampling device.

2. A drilling sampling device for road construction detection according to claim 1, characterized in that: The drilling drive mechanism comprises an oil cylinder (4), an oil tank (9) and a rotating shaft (83); the oil cylinder (4) and the oil tank (9) are both fixedly mounted on the top of the vehicle frame (1); the output end of the oil tank (9) is connected to the input end of the oil cylinder (4) via a hose, and the output end of the oil cylinder (4) passes through the vehicle frame (1) and is fixedly connected to a mounting plate (81); the rotating shaft (83) is arranged through the top of the mounting plate (81) and is rotatably connected to the mounting plate (81); the bottom end of the rotating shaft (83) is fixedly connected to a cover plate (84); an internal thread is provided at a position near the top of the inner cavity (89); an external thread is provided on the outer wall of the cover plate (84); and the cover plate (84) is threadedly connected to the inner cylinder (87) via the external thread; a rotating component is provided on the mounting plate (81) and the rotating shaft (83) for driving the rotating shaft (83) to rotate.

3. A road construction inspection punching sampling device according to claim 2, characterized in that: The rotating component comprises a motor (82) and a second pulley, wherein the motor (82) is fixedly mounted on the top of a mounting plate (81), and an output end of the motor (82) passes through the mounting plate (81) and is fixedly connected to a first pulley, wherein the second pulley is fixedly sleeved on an outer side wall of a rotating shaft (83), and a synchronous belt is sleeved on both the first pulley and the second pulley.

4. A road construction inspection punching sampling device according to claim 2, characterized in that: The winding and pulling assembly comprises a winch (5) and a fixed pulley (7), wherein the winch (5) and the fixed pulley (7) are both fixedly mounted on the top of the frame (1), the winch (5) is composed of a drum, a support frame, a servo motor (51) and a steel wire rope (52), the steel wire rope (52) is in contact with the top of the fixed pulley (7), and the end of the steel wire rope (52) away from the winch (5) and the fixed pulley (7) successively passes through the top wall of the frame (1), the rotating shaft (83) and the cover plate (84), and extends into the inner cavity (89), the portion of the steel wire rope (52) located in the inner cavity (89) is divided into two groups of steel wire connecting ropes, the bottom ends of the two groups of steel wire connecting ropes are fixedly connected with hooks (521), and the sample storage device (11) is detachably connected to the two groups of hooks (521) on the winding and pulling assembly by cutting the support assembly.

5. A punching sampling device for road construction detection according to claim 4, characterized in that: The cutting support assembly comprises two groups of receiving grooves (116), the two groups of receiving grooves (116) are symmetrically arranged on the inner wall of the sample storage container (11) near the bottom opening, and the two groups of receiving grooves (116) are both provided with steel wires (114), one end of the two groups of steel wires (114) is respectively fixedly connected to the side wall of one side of the two groups of receiving grooves (116), and the other ends of the two groups of steel wires (114) respectively pass through the other side wall and the other side wall of the two groups of receiving grooves (116) in sequence. The bottom wall of the boss (113) is fixedly connected with a hanging ring (111), and the two groups of hanging rings (111) are respectively located at two groups of notches on the sample storage container (11), and the sample storage container (11) is hung on the two groups of hooks (521) on the retracting component by cutting the two groups of hanging rings (111) on the support component, and the boss (113) and the two groups of steel wires (114) are jointly installed with a supporting component for preventing the core sample inside the sample storage container (11) from falling.

6. A punching sampling device for road construction detection according to claim 5, characterized in that: The supporting component comprises a plurality of groups of steel wires 2 (115), wherein the plurality of groups of steel wires 2 (115) are evenly installed on the outer wall of the two groups of steel wires 1 (114) located inside the receiving groove (116), and the inner wall of the two groups of the receiving groove (116) is evenly penetrated with a plurality of groups of wire inlet holes (118), and the outer wall of the sample storage container (11) is evenly penetrated with a plurality of groups of wire outlet holes (117) near the top position, and the ends of the plurality of groups of steel wires 2 (115) away from the steel wire 1 (114) respectively pass through the plurality of groups of wire inlet holes (118) and the plurality of groups of wire outlet holes (117), and are fixedly connected with tension springs (112), and the ends of the plurality of groups of tension springs (112) away from the steel wires 2 (115) are fixedly connected to the side wall of the protrusion of the boss (113).

7. A drilling sampling device for road construction detection according to claim 1, characterized in that: The fixing mechanism comprises four groups of positioning holes (104) and four groups of ground nails (10). The four groups of positioning holes (104) are symmetrically arranged in pairs and penetrate through the top of the bottom plate (103). The four groups of ground nails (10) are all placed inside the sample storage box (3). The ground nail (10) consists of a head (1001) and a drill bit (1003). A positioning portion (1002) is fixedly installed above the outer wall of the drill bit (1003). The positioning portion (1002) is a tapered tap structure.

8. A drilling sampling device for road construction detection according to claim 1, characterized in that: It also includes a sealing mechanism, which includes a bottom cover (12). The bottom cover (12) is placed inside the sample storage box (3), and the diameter of the bottom cover (12) is slightly smaller than the inner diameter of the sample storage container (11). A plurality of groups of feet (121) are evenly installed near the edge of the bottom end of the bottom cover (12).

9. A punching sampling device for road construction detection according to claim 8, characterized in that: A handle (122) is installed at the center of the bottom end of the bottom cover (12), and the height of the handle (122) is lower than the height of the bottom foot (121).

10. A drilling sampling device for road construction detection according to claim 1, characterized in that: Two sets of lifting mechanisms are symmetrically arranged on the bottom plate (103), and the bottom plate (103) is respectively connected to two sets of moving mechanisms (101) via the two sets of lifting mechanisms.

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