Soil fixed-depth sampling device for constructional engineering specialty

Abstract

The invention discloses a soil fixed-depth sampling device for a constructional engineering specialty. The soil fixed-depth sampling device comprises a cart, a lifting mechanism is arranged on the cart, an electric rotating rod is arranged on the lifting mechanism, a mounting plate is connected to the electric rotating rod, a sampling pipe is rotationally connected to the mounting plate through a hollow rotating rod, and a stripping mechanism is arranged between the sampling pipe and the mounting plate. The vibration rod is mounted on the sampling pipe, the groove is formed in the inner wall of the sampling pipe, and the sealing strip is arranged to seal the groove, so that soil is prevented from entering the groove and the sealing strip is prevented from moving to be separated from a soil sample when the sampling pipe drills and samples, a gap is filled between the soil sample and the periphery of the inner wall of the sampling pipe, and subsequent soil taking operation is facilitated; the semi-circular striking block strikes the vibrating rod to generate vibration, the vibrating rod transmits the generated vibration to the inner wall of the sampling pipe, and a soil sample is stripped outwards under the assistance of the vibration and the gap, so that the difficulty of taking out the soil is reduced, and the effect of conveniently taking out the soil sample is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of soil sampling, in particular to a soil fixed-depth sampling device for construction engineering. Background Art

[0002] In the field of construction engineering, soil sampling is a very important preliminary work. It plays a key role in evaluating the geological conditions of the construction site, determining the bearing capacity of the foundation, selecting appropriate foundation treatment methods, and predicting possible geological problems.

[0003] At present, automatic sampling drills are widely used to collect soil samples. Automatic sampling drills use mechanical power to quickly drill into the soil layer and are equipped with special sampling tubes that can collect soil samples at different depths. However, in actual use, automatic sampling drills have some defects: when the sampling tube is drilled into the soil layer for soil storage sampling, due to the squeezing between the soil and the viscosity of the soil itself, after the sampling tube is pulled out of the soil layer, the soil is easily blocked in the sampling tube and cannot be removed smoothly. In order to remove the sample, it is usually necessary to manually knock the sampling tube with the help of tools. This method not only easily causes collision deformation damage to the sampling tube, but also increases the difficulty of soil removal. Summary of the invention

[0004] The invention aims to provide a soil fixed-depth sampling device for construction engineering which is convenient for taking out soil samples.

[0005] The present invention adopts the following technical scheme: a soil fixed-depth sampling device for construction engineering, comprising a cart, a lifting mechanism is provided on the cart, an electric rotating rod is provided on the lifting mechanism, a mounting plate is connected to the electric rotating rod, a sampling tube is rotatably connected to the mounting plate through a hollow rotating rod, a driving motor is installed on the top of the mounting plate, the driving motor is transmission-connected to the hollow rotating rod, a stripping mechanism is provided between the sampling tube and the mounting plate, the stripping mechanism comprises a cover body arranged at the lower side of the mounting plate, semicircular striking blocks capable of horizontal reciprocating movement are provided in the cover body at intervals along the circumferential direction, and the semicircular striking blocks A second spring is connected to the cover body, and a vibrating rod is embeddedly installed at circumferential intervals on the sampling tube. The top of the vibrating rod extends out of the sampling tube. A driving member for driving the cover body to rise and fall is provided on the mounting plate. After the cover body is lowered, it is sleeved on the outside of the sampling tube, so that the semicircular impact block moves between the vibrating rods. Grooves are opened at circumferential intervals on the inner wall of the sampling tube, and vibrating rods are embeddedly installed at circumferential intervals on the inner wall of the sampling tube. Grooves are opened at circumferential intervals on the inner wall of the sampling tube, and a sealing strip is provided in the groove. A driving mechanism for driving the sealing strip to reciprocate horizontally in the groove is provided in the hollow rotating rod.

[0006] Preferably, the lifting mechanism includes a guide rail connected to the trolley, a lifting block is slidably connected in the guide rail, an electric screw is provided on the trolley, the electric screw is threadedly connected to the lifting block, and the electric rotating rod is arranged on the lifting block.

[0007] Preferably, the driving mechanism includes an air pipe fixedly connected to the hollow rotating rod, an airbag fixedly connected to the groove, the airbag is connected to the sealing strip, the expansion of the airbag pushes the sealing strip to move the sealing groove, the air pipe is connected to the airbag through a shunt pipe, the top of the mounting plate is connected to a shell, the top of the air pipe extends into the shell, an air pump is installed on the lifting block, and the air pump is connected to the shell through a hose.

[0008] Preferably, the cart includes a movable base, a first rotating shaft, a mounting frame, a second rotating shaft, a mounting seat, a vertical plate, a hydraulic cylinder and a push rod. The movable base is rotatably connected to the mounting frame via the first rotating shaft, the mounting frame is rotatably connected to the mounting seat via the second rotating shaft, vertical plates are connected to both sides of the top of the mounting seat, hydraulic cylinders are hingedly connected to the top of the movable base and the top of the mounting frame, the hydraulic cylinders are hingedly connected to the corresponding vertical plates, a push rod is connected to the outside of the movable base, a guide rail is connected to the top of the mounting seat, an electric screw is arranged on the mounting seat, and through holes are opened on the movable base and the mounting seat for lifting and lowering the sampling tube.

[0009] Preferably, a laser level adjustment mechanism is provided in the middle of the top of the mounting seat, and the laser level adjustment mechanism includes a connecting seat connected to the middle of the top of the mounting seat, a ring is rotatably connected to the connecting seat via a third rotating shaft, a laser light is rotatably connected to the ring via a fourth rotating shaft, and a photoelectric sensor is installed in the connecting seat and is located directly below the laser light.

[0010] Preferably, a brushing mechanism for cleaning the outside of the sampling tube is provided on the mounting seat, and the brushing mechanism includes an annular brush rotatably connected to a through hole on the mounting seat, and the annular brush is used to clean the outside of the sampling tube. A disc is connected to the mounting seat via a rotating shaft, and a slotted swing plate is connected to the side of the annular brush close to the disc. A lever is connected to the eccentric position of the disc, and the lever is located in the slot of the slotted swing plate. The screw on the electric screw is transmission-connected to the rotating shaft to drive the rotating shaft to rotate.

[0011] Preferably, the driving member includes a sliding rod 1 that is slidably connected to the mounting plate, the cover body is installed on the sliding rod 1, a spring 1 is connected between the sliding rod 1 and the mounting plate, and an extrusion rod is connected to the top of the lifting block. The sliding rod 1 can contact the extrusion rod as the mounting plate swings upward and is squeezed downward by the extrusion rod.

[0012] Preferably, nuts are connected to the outside of the movable base at intervals, a screw is connected to the inner thread of the nut, and a pointed cone is connected to the bottom end of the screw.

[0013] The beneficial effects of the present invention have the following advantages compared with the prior art:

[0014] 1. By installing a vibrating rod on the sampling tube, opening a groove on the inner wall of the sampling tube, and arranging a sealing strip to seal the groove, soil is prevented from entering the groove when the sampling tube is drilled for sampling. The sealing strip moves and separates from the soil sample, so that there is a gap around the soil sample and the inner wall of the sampling tube, which is convenient for subsequent soil removal operations. The semicircular impact block hits the vibrating rod to generate vibration, and the vibrating rod transmits the generated vibration to the inner wall of the sampling tube. The soil sample is removed outward with the assistance of vibration and gap, which reduces the difficulty of soil removal and achieves the effect of facilitating soil sample removal. There is no need to manually knock the sampling tube with the help of tools to remove the material, which reduces the risk of deformation and damage of the sampling tube and can extend the service life of the sampling tube.

[0015] 2. By adjusting the horizontal position of the mounting base, the sampling tube can be adjusted to ensure that the sampling tube remains vertical to the ground for drilling sampling. This not only improves the accuracy of sampling and the reliability of the sampling results, but also reduces the risk of bending or breaking of the sampling tube, reduces the possibility of equipment damage, reduces the resistance during the sampling process, reduces the difficulty of drilling sampling, and improves the sampling efficiency.

[0016] 3. Through the cooperation of laser lights and photoelectric sensors, automatic and high-precision level adjustment can be achieved. There is no need to observe with the naked eye whether the mount is adjusted to a horizontal state. Compared with naked eye observation and manual control adjustment, it not only improves accuracy and efficiency, but also reduces human errors, improves safety and consistency, and is suitable for various complex environments.

[0017] 4. The sampling tube will pass through the inside of the annular brush during the lifting process. The annular brush can brush off the soil adhering to the outer wall of the sampling tube, thereby automatically cleaning the outer wall of the sampling tube, reducing the risk of erosion and rust of the sampling tube, and thus extending the service life of the sampling tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the cart and the lifting mechanism of the present invention.

[0020] Figure 3 It is a partial three-dimensional structural schematic diagram of the present invention.

[0021] Figure 4 It is a schematic diagram of the installation of the stripping mechanism of the present invention.

[0022] Figure 5 It is a three-dimensional structural schematic diagram of the stripping mechanism of the present invention.

[0023] Figure 6 It is a partial three-dimensional structural schematic diagram of the stripping mechanism of the present invention.

[0024] Figure 7 It is a working state diagram of the stripping mechanism of the present invention.

[0025] Figure 8 It is a schematic diagram of the three-dimensional structure of the cart of the present invention.

[0026] Fig. 9 It is a schematic diagram of the three-dimensional structure of the laser level adjustment mechanism of the present invention.

[0027] Fig.10 It is a three-dimensional structural schematic diagram of the cleaning mechanism of the present invention.

[0028] Serial numbers in the figure: 1-trolley, 11-mobile base, 12-rotating shaft 1, 13-mounting frame, 14-rotating shaft 2, 15-mounting seat, 16-through hole, 17-vertical plate, 18-hydraulic cylinder, 19-hand push rod, 21-guide rail, 22-electric screw, 23-lifting block, 3-mounting plate, 4-electric rotating rod, 5-hollow rotating rod, 6-sampling tube, 7-driving motor, 8-belt drive assembly 1, 91-vibrating rod, 92-guide sleeve, 93-sliding rod 1, 94-spring 1, 95-extrusion rod, 96-cover, 97-sliding rod 2, 98-semicircular impact block, 99-spring 2 , 910-groove, 911-sealing strip, 912-airbag, 913-trachea, 914-diverter, 915-housing, 916-air pump, 917-hose, 101-connecting seat, 102-rotating shaft three, 103-ring, 104-rotating shaft four, 105-laser light, 106-photoelectric sensor, 111-annular slide rail, 112-annular slider, 113-annular brush, 114-rotating shaft, 115-disc, 116-slotted swing plate, 117-shift rod, 118-belt drive component two, 121-nut, 122-screw, 123-cone. DETAILED DESCRIPTION

[0029] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0030] A soil sampling device for construction engineering, see Figure 1-Figure 7, including a cart 1, the cart 1 includes a mobile base 11, a rotating shaft 12, a mounting frame 13, a rotating shaft 2 14, a mounting seat 15, a vertical plate 17, a hydraulic cylinder 18 and a hand push rod 19, the front and rear sides of the mobile base 11 are rotatably connected with the rotating shaft 12, the mounting frame 13 is connected between the two rotating shafts 12, the mounting frame 13 is located in the mobile base 11, the top and bottom of the mounting frame 13 are both open-type settings, the left and right sides of the mounting frame 13 are rotatably connected with the rotating shaft 2 14, the mounting seat 15 is connected between the two rotating shafts 2 14, the right side and the rear side of the top of the mounting seat 15 are connected to two vertical plates 17, the two vertical plates 17 on the right side are arranged front and back, and the two vertical plates 17 on the rear side are arranged left and right, the mobile base 1 The top right side of the mounting frame 11 and the top rear side of the mounting frame 13 are both hinged with two hydraulic cylinders 18, the two hydraulic cylinders 18 on the mobile base 11 are arranged front and rear, and the two hydraulic cylinders 18 on the mounting frame 13 are arranged left and right, the telescopic rod of the hydraulic cylinder 18 is hinged with the vertical plate 17 on the same side, and a hand push rod 19 is connected to the rear outer wall of the mobile base 11, and a lifting mechanism is provided on the top rear side of the mounting seat 15, and the lifting mechanism includes a guide rail 21 connected to the top rear side of the mounting seat 15, and the guide rail 21 is located between the two vertical plates 17 on the rear side, and a lifting block 23 is slidably connected in the guide rail 21, and an electric screw rod 22 is provided at the rear of the mounting seat 15, and the electric screw rod 22 includes a servo motor and a screw rod, and the servo motor is installed on the mounting seat 15. At the rear side of the bottom, the screw rod is rotatably connected to the rear side of the mounting seat 15, the screw rod is connected to the output shaft of the servo motor, and the screw rod is threadedly connected to the lifting block 23. The lifting block 23 can be pushed down by controlling the servo motor to drive the screw rod to rotate, and the lifting block 23 can be pushed up by controlling the servo motor to drive the screw rod to reverse. An electric rotating rod 4 is provided on the lifting block 23, and the electric rotating rod 4 includes a stepping motor and a rotating rod. The stepping motor is installed on the right front side of the lifting block 23, and the rotating rod is rotatably connected to the front side of the lifting block 23. A mounting plate 3 is connected to the rotating rod. Controlling the stepping motor to drive the rotating rod to rotate can drive the mounting plate 3 to swing upward, and controlling the stepping motor to drive the rotating rod to reverse can drive the mounting plate 3 to swing downward. A hollow rotating rod 5 is rotatably connected to the front side of the mounting plate 3, and a sampling tube 6 is connected to the bottom end of the hollow rotating rod 5. The bottom end of the sampling tube 6 is serrated, which helps to better cut into the soil during the sampling process, thereby improving the sampling efficiency and the integrity of the sample. A through hole 16 is provided on the front side of the movable base 11 and the mounting seat 15 for the sampling tube 6 to be raised and lowered. A driving motor 7 is installed on the top rear side of the mounting plate 3, and the driving motor 7 is connected to the hollow rotating rod 5 through a belt transmission assembly 8. The belt transmission assembly 8 consists of two pulleys and a belt. The two pulleys are respectively connected to the output shaft of the driving motor 7 and the upper part of the hollow rotating rod 5, and the belt is sleeved between the two pulleys. A stripping mechanism is provided between the sampling tube 6 and the mounting plate 3.

[0031] See also Figure 4-Figure 7The stripping mechanism includes a cover body 96 arranged at the lower side of the mounting plate 3, and two sliding rods 97 that can move back and forth horizontally are connected in a sliding manner at uniform intervals along the circumferential direction on the cover body 96. The shape of the sliding rod 97 is T-shaped, and the ends of the two sliding rods 97 that are close to each other are connected with a semicircular striking block 98 located in the cover body 96, and a spring 99 is connected between the semicircular striking block 98 and the cover body 96. The spring 99 is sleeved on the sliding rod 97, and six vibrating rods 91 are embeddedly installed at uniform intervals along the circumferential direction on the sampling tube 6. The top of the vibrating rod 91 extends out of the sampling tube 6. A driving member for driving the cover body 96 to rise and fall is provided on the mounting plate 3. After the cover body 96 is lowered, it is sleeved on the outside of the sampling tube 6, so that the semicircular striking block 98 moves between the vibrating rods 91. The driving member includes a guide sleeve 92, a sliding rod 93, a spring 94 and an extrusion rod 95. Two guide sleeves 92 are symmetrically connected to the front side of the plate 3, and a slide bar 93 is slidably connected in the two guide sleeves 92. The shape of the slide bar 93 is an inverted U shape, and a cover body 96 is installed at the lower part of the slide bar 93. The left and right sides of the inverted U-shaped slide bar 93 are sleeved with springs 94, and the two ends of the spring 94 are respectively connected to the inverted U-shaped slide bar 93 and the guide sleeve 92. An inverted U-shaped extrusion rod 95 is connected to the top of the lifting block 23. The slide bar 93 can contact the extrusion rod 95 as the mounting plate 3 swings upward, and is squeezed downward by the extrusion rod 95. Six grooves 910 are evenly spaced along the circumferential direction on the inner wall of the sampling tube 6, and each groove 910 is located between two adjacent vibrating rods 91. A sealing strip 911 is slidably connected in the groove 910, and a driving mechanism for driving the sealing strip 911 to reciprocate horizontally in the groove 910 is provided in the hollow rotating rod 5.

[0032] The ground for soil sampling may be uneven. The cart 1 will tilt to one side when it is on the uneven ground, causing the lifting mechanism to drive the sampling tube 6 to tilt to one side through the mounting plate 3, so that the sampling tube 6 cannot remain perpendicular to the ground for drilling and sampling. The inclined drilling of the sampling tube 6 will cause the sampling soil layer to fail to reach the predetermined sampling depth, affecting the accuracy of the sampling depth, thereby affecting the reliability of the sampling results; in addition, when the sampling tube 6 is drilled in an inclined state, it may bend or break due to uneven force, increasing the risk of equipment damage. At the same time, the inclined sampling tube 6 may cause increased resistance during the sampling process, increase the difficulty of drilling, and reduce the sampling efficiency. If the mounting seat 15 tilts to the lower right and is in a tilted state with the left high and the right low, the telescopic rods of the two hydraulic cylinders 18 on the mobile base 11 are controlled to extend, and the vertical plate 17 on the right side is pushed to drive the mounting seat 15 to swing to a horizontal state with the rotating shaft 12 as the rotation center. If the mounting seat 15 tilts to the lower left and is in a tilted state with the left lower and the right higher, the telescopic rods of the two hydraulic cylinders 18 on the mobile base 11 are controlled to shorten, and the vertical plate 17 on the right is pulled to drive the mounting seat 15 to swing to a horizontal state with the rotation center of the first axis 12. If the mounting seat 15 tilts to the lower back and is in a tilted state with the front higher and the back lower, the telescopic rods of the two hydraulic cylinders 18 on the mounting frame 13 are controlled to extend, and the vertical plate 17 on the rear side is pushed to drive the mounting seat 15 to swing to a horizontal state with the rotation center of the second axis 14. If the mounting seat 15 tilts to the lower front and is in a tilted state with the front lower and the back higher, the telescopic rods of the two hydraulic cylinders 18 on the mounting frame 13 are controlled to shorten, and the vertical plate 17 on the rear side is pulled to drive the mounting seat 15 to swing to a horizontal state with the rotation center of the second axis 14. In this way, horizontal adjustment of the mounting seat 15 can be achieved, ensuring that the mounting seat 15 always remains in a horizontal state, so that the mounting plate 3 is driven by the lifting mechanism to perform horizontal adjustment, ensuring that the mounting plate 3 also remains in a horizontal state, and then the sampling tube 6 can be adjusted to ensure that the sampling tube 6 remains perpendicular to the ground for drilling sampling, which not only improves the accuracy of sampling and improves the reliability of the sampling results, but also reduces the risk of bending or breaking of the sampling tube 6, reduces the possibility of equipment damage, reduces the resistance during the sampling process, reduces the difficulty of drilling sampling, and improves the sampling efficiency.

[0033] Initially, the sealing strip 911 seals the groove 910 to prevent the soil from entering the groove 910 during the subsequent sampling tube 6 drilling and sampling. The electric screw 22 is controlled to rotate to drive the lifting block 23 to drive the mounting plate 3 to descend through the electric rotating rod 4. The mounting plate 3 descends and drives the sampling tube 6 to descend through the hollow rotating rod 5 to enter the soil layer for sampling. At the same time, the driving motor 7 is controlled to work. The driving motor 7 drives the hollow rotating rod 5 to rotate through the belt transmission component 8. The hollow rotating rod 5 rotates and drives the sampling tube 6 to rotate for drilling and sampling. After the drilling and sampling is completed, the electric screw 22 is controlled to reverse and drive the lifting block 23 to rise, thereby driving the sampling tube 6 to rise and pull it out of the soil layer. Then, the electric rotating rod 4 is controlled to work to drive the mounting plate 3 to drive its upper part to swing upward, and the sampling tube 6 swings forward and upward, so that its bottom end is located at the front side of the cart 1, so as to facilitate the subsequent collection of soil samples dropped from the sampling tube 6. The slide bar 93 swings upward with the mounting plate 3 to contact the extrusion rod 95, and is squeezed downward by the extrusion rod 95, and the spring 94 is compressed accordingly, and the slide bar 93 moves downward to drive the cover body 96 to move downward and sleeve on the outside of the sampling tube 6, so that the semicircular striking block 98 moves between the vibrating rods 91. Then the driving mechanism is controlled to drive the sealing strip 911 to move in the direction away from the central axis of the sampling tube 6, so that the soil sample and the inner wall of the sampling tube 6 are filled with gaps around, which is convenient for subsequent soil extraction operations. Then the driving motor 7 is controlled to work, so that the sampling tube 6 drives the vibrating rod 91 to rotate, and the rotation of the vibrating rod 91 can collide with the semicircular striking block 98 to generate vibration, and the vibrating rod 91 transmits the generated vibration to the inner wall of the sampling tube 6, and the soil sample is removed outward with the assistance of vibration and gap, which reduces the difficulty of soil extraction and achieves the effect of being able to facilitate soil sample extraction, without the need for manual use of tools to knock the sampling tube 6 for removal, reducing the risk of deformation damage to the sampling tube 6, and can extend the service life of the sampling tube 6.

[0034] The elastic force of spring 2 99 is relatively large, ensuring that the semicircular impact block 98 can stably collide with the vibration rod 91. After the vibration rod 91 rotates until it contacts the semicircular impact block 98, it continues to rotate, pushing the semicircular impact block 98 to move away from the central axis of the cover body 96. Spring 2 99 is compressed accordingly. When the vibration rod 91 rotates and disengages from the semicircular impact block 98, under the resetting action of spring 2 99, the semicircular impact block 98 can be pushed to move toward the direction close to the central axis of the cover body 96 and reset, thereby impacting the next vibration rod 91. When the soil sample is completely out of the sampling tube 6, the electric rotating rod 4 is controlled to drive the mounting plate 3 to drive the upper component thereof to swing downward and reset. The sliding bar 93 swings downward with the mounting plate 3 and disengages from the squeezing rod 95. Under the reset action of the spring 94, the sliding bar 93 is pushed to drive the cover body 96 to move upward and disengage from the sampling tube 6. The semicircular striking block 98 moves upward and disengages from the vibrating rod 91. Finally, the driving mechanism is controlled to drive the sealing strip 911 to move and reset in the direction close to the central axis of the sampling tube 6, thereby resealing the groove 910.

[0035] See also Figure 4-Figure 5 The driving mechanism includes an air pipe 913 fixedly connected to the hollow rotating rod 5, an air bag 912 fixedly connected to the groove 910, the air bag 912 is connected to the sealing strip 911, the air bag 912 expands and pushes the sealing strip 911 to move and seal the groove 910, the air pipe 913 is connected to the air bag 912 through the shunt pipe 914, the top front side of the mounting plate 3 is connected to the shell 915, the top end of the air pipe 913 extends into the shell 915, the air pipe 913 is rotatably connected to the shell 915, and an air pump 916 is installed on the top of the lifting block 23, the air pump 916 is located on the inner side of the extrusion rod 95, and the air pump 916 is connected to the shell 915 through a hose 917.

[0036] Initially, the airbag 912 expands and pushes the sealing strip 911 to seal the groove 910. The air pump 916 is controlled to evacuate air, so that the gas in the airbag 912 can be drawn out through the shunt tube 914, the air pipe 913, the shell 915 and the hose 917. The airbag 912 shrinks accordingly to pull the sealing strip 911 to move away from the central axis of the sampling tube 6, so that there is a gap around the soil sample and the inner wall of the sampling tube 6, which is convenient for the subsequent soil removal operation; the air pump 916 is controlled to inflate, so that the external gas can be injected into the airbag 912 through the hose 917, the shell 915, the air pipe 913 and the shunt tube 914, so that the airbag 912 expands and pushes the sealing strip 911 to move toward the direction close to the central axis of the sampling tube 6 to reset, thereby resealing the groove 910.

[0037] See also Figure 8-Figure 9 A laser level adjustment mechanism is provided in the middle of the top of the mounting seat 15, and the laser level adjustment mechanism includes a connecting seat 101 connected to the middle of the top of the mounting seat 15, and the left and right sides of the connecting seat 101 are rotatably connected with a rotating shaft three 102, a ring 103 is connected between the two rotating shafts three 102, and the front and rear sides of the ring 103 are rotatably connected with a rotating shaft four 104, a laser lamp 105 is connected between the two rotating shafts four 104, and a photoelectric sensor 106 is installed in the connecting seat 101 and is located directly below the laser lamp 105.

[0038] When the uneven ground causes the mounting base 15 to tilt to one side, the mounting base 15 drives the photoelectric sensor 106 to tilt to one side through the connecting base 101. Since the ring 103 is rotatably connected to the connecting base 101 through the rotating shaft 3 102, the laser lamp 105 is rotatably connected in the ring 103 through the rotating shaft 4 104, so that the laser lamp 105 can remain in a vertical state under the action of its own gravity. When the laser lamp 105 is in a vertical state and the photoelectric sensor 106 is tilted to one side, the light emitted by the laser lamp 105 cannot directly hit the midpoint of the photoelectric sensor 106. When the photoelectric sensor 106 senses that the light emitted by the laser lamp 105 is biased to the left, it means that the mounting base 15 is tilted to the lower right and is in a tilted state with the left side higher and the right side lower. The photoelectric sensor 106 sends a signal to the controller (the controller is not shown in the figure, the controller is a prior art and will not be described here). After receiving the signal, the controller controls the telescopic rods of the two hydraulic cylinders 18 on the mobile base 11 to extend, pushing the right vertical plate 17 to drive the mounting base 15 to swing to a horizontal state with the rotating shaft 12 as the rotation center. The mounting base 15 swings to a horizontal state and drives the photoelectric sensor 106 to swing to a horizontal state through the connecting base 101. At this time, the light emitted by the laser lamp 105 directly hits the midpoint of the photoelectric sensor 106. The photoelectric sensor 106 sends a signal to the controller. After receiving the signal, the controller controls the hydraulic cylinder 18 on the mobile base 11 to close. Similarly, when the photoelectric sensor 106 senses that the light emitted by the laser lamp 105 is biased to the right, it means that the mounting seat 15 is tilted to the lower left and is in a tilted state with the left lower and the right higher. The photoelectric sensor 106 sends a signal to the controller. After receiving the signal, the controller controls the telescopic rods of the two hydraulic cylinders 18 on the mobile base 11 to shorten, and pulls the vertical plate 17 on the right to drive the mounting seat 15 to swing to a horizontal state with the rotation center of the first axis 12. If the photoelectric sensor 106 senses that the light emitted by the laser lamp 105 is biased to the front, it means that the mounting seat 15 is tilted to the lower back and is in a tilted state with the front higher and the back lower. The photoelectric sensor 106 sends a signal to the controller. After receiving the signal, the controller controls the telescopic rods of the two hydraulic cylinders 18 on the mounting frame 13 to extend, and pushes the vertical plate 17 on the rear side to drive the mounting seat 15 to swing to a horizontal state with the rotation center of the second axis 14. Similarly, if the photoelectric sensor 106 senses that the light emitted by the laser lamp 105 is biased backward, it means that the mounting seat 15 is tilted forward and downward and is in a tilted state with the front lower and the back higher. The photoelectric sensor 106 sends a signal to the controller. After receiving the signal, the controller controls the telescopic rods of the two hydraulic cylinders 18 on the mounting frame 13 to shorten, and pulls the vertical plate 17 on the rear side to drive the mounting seat 15 to swing to a horizontal state with the second rotating shaft 14 as the rotation center. In this way, automatic and high-precision horizontal adjustment can be achieved, and there is no need to manually observe whether the mounting seat 15 is adjusted to a horizontal state. Compared with naked eye observation and manual control adjustment, it not only improves accuracy and efficiency, but also reduces human errors, improves safety and consistency, and is suitable for various complex environments.

[0039] See also Fig.10 The mounting seat 15 is provided with a cleaning mechanism for cleaning the outside of the sampling tube 6, the cleaning mechanism includes an annular slide rail 111 connected to the through hole 16 on the mounting seat 15, an annular slider 112 is slidably connected to the annular slide rail 111, and an annular brush 113 for cleaning the outside of the sampling tube 6 is connected to the annular slider 112. The mounting seat 15 is rotatably connected with a rotating shaft 114, the rotating shaft 114 is located between the annular slide rail 111 and the electric screw 22, and a disc 115 is connected to the rotating shaft 114. The annular brush 1 A slotted swing plate 116 is connected to the rear side of 13, a lever 117 is connected to the eccentric position of the top of the disc 115, the lever 117 is located in the groove of the slotted swing plate 116, the screw on the electric screw 22 is connected to the rotating shaft 114 through a belt drive component 118, the belt drive component 118 is located on the lower side of the disc 115, the belt drive component 118 consists of two pulleys and a belt, the two pulleys are respectively connected to the rotating shaft 114 and the lower part of the screw, and the belt is sleeved between the two pulleys.

[0040] The sampling tube 6 will pass through the annular brush 113 during the lifting process. The annular brush 113 can brush off the soil adhering to the outer wall of the sampling tube 6, thereby automatically cleaning the outer wall of the sampling tube 6, reducing the risk of erosion and rust of the sampling tube 6, and thus extending the service life of the sampling tube 6. The screw on the electric screw 22 rotates through the belt drive assembly 118 to drive the rotating shaft 114 to rotate. The rotation of the rotating shaft 114 drives the disc 115 to drive the lever 117 to rotate. When the lever 117 rotates, it pushes the slotted swing plate 116 to swing back and forth. At the same time, the lever 117 slides in the slot of the slotted swing plate 116. The reciprocating swing of the slotted swing plate 116 drives the annular brush 113 to rotate forward and reverse alternately. The annular brush 113 can not only clean the outer wall of the sampling tube 6 more cleanly, but also shake off the soil on it, keep the annular brush 113 clean, and ensure that it continuously and effectively removes the soil on the outer wall of the sampling tube 6.

[0041] See also Figure 1 and Figure 8 The outer periphery of the movable base 11 is fixedly connected with nuts 121 , and screw rods 122 are threadedly connected inside the four nuts 121 , and the bottom ends of the four screw rods 122 are connected with pointed cones 123 .

[0042] The screw rod 122 is rotated so that the screw rod 122 drives the pointed cone 123 to move downward and insert into the ground, thereby locking the cart 1 to prevent the cart 1 from being displaced during the soil sampling operation, thereby improving the stability and safety of the cart 1, and further improving the accuracy and efficiency of soil sampling. When the cart 1 needs to be unlocked, the screw rod 122 is reversed so that the screw rod 122 drives the pointed cone 123 to move upward and be pulled out of the ground.

[0043] The above-mentioned embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those skilled in the art, several modifications, improvements and substitutions can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims

1. A soil fixed depth sampling device for construction engineering, characterized in that: The invention comprises a trolley (1), wherein the trolley (1) is provided with a lifting mechanism, wherein the lifting mechanism is provided with an electric rotating rod (4), wherein the electric rotating rod (4) is connected with a mounting plate (3), wherein the mounting plate (3) is rotatably connected with a sampling tube (6) via a hollow rotating rod (5), wherein a driving motor (7) is installed on the top of the mounting plate (3), wherein the driving motor (7) is transmission-connected with the hollow rotating rod (5), wherein a stripping mechanism is provided between the sampling tube (6) and the mounting plate (3), wherein the stripping mechanism comprises a cover body (96) arranged at the lower side of the mounting plate (3), wherein semicircular striking blocks (98) capable of horizontal reciprocating movement are provided at intervals along the circumferential direction in the cover body (96), wherein a spring (99) is connected between the semicircular striking blocks (98) and the cover body (96), wherein the sampling tube (6) is provided with a stripping mechanism at intervals along the circumferential direction. A vibrating rod (91) is embedded and installed at intervals, and the top end of the vibrating rod (91) extends out of the sampling tube (6). A driving member for driving the cover body (96) to rise and fall is provided on the mounting plate (3). After the cover body (96) is lowered, it is sleeved on the outside of the sampling tube (6), so that the semicircular striking block (98) moves between the vibrating rods (91). Grooves (910) are provided on the inner wall of the sampling tube (6) at intervals in the circumferential direction. Vibrating rods (91) are embedded and installed at intervals in the circumferential direction on the sampling tube (6). Grooves (910) are provided on the inner wall of the sampling tube (6) at intervals in the circumferential direction. A sealing strip (911) is provided in the groove (910). A driving mechanism for driving the sealing strip (911) to reciprocate horizontally in the groove (910) is provided in the hollow rotating rod (5).

2. A soil fixed depth sampling device for construction engineering according to claim 1, characterized in that: The lifting mechanism comprises a guide rail (21) connected to the trolley (1), a lifting block (23) is slidably connected inside the guide rail (21), an electric screw rod (22) is provided on the trolley (1), the electric screw rod (22) is threadedly connected to the lifting block (23), and an electric rotating rod (4) is arranged on the lifting block (23).

3. A soil fixed depth sampling device for construction engineering according to claim 2, characterized in that: The driving mechanism comprises an air pipe (913) fixedly connected to the hollow rotating rod (5), an air bag (912) fixedly connected to the groove (910), the air bag (912) being connected to the sealing strip (911), the air bag (912) expanding to push the sealing strip (911) to move the sealing groove (910), the air pipe (913) being connected to the air bag (912) via a shunt pipe (914), the top of the mounting plate (3) being connected to a shell (915), the top end of the air pipe (913) extending into the shell (915), an air pump (916) being installed on the lifting block (23), the air pump (916) being connected to the shell (915) via a hose (917).

4. A soil fixed depth sampling device for construction engineering according to claim 3, characterized in that: The cart (1) comprises a movable base (11), a first rotating shaft (12), a mounting frame (13), a second rotating shaft (14), a mounting seat (15), a vertical plate (17), a hydraulic cylinder (18) and a hand push rod (19). The movable base (11) is rotatably connected to the mounting frame (13) via the first rotating shaft (12). The mounting seat (15) is rotatably connected to the mounting frame (13) via the second rotating shaft (14). Both sides of the top of the mounting seat (15) are connected to the vertical plates (17). The top of the movable base (11) and the top of the mounting frame (13) are both hinged with a hydraulic cylinder (18), the hydraulic cylinder (18) and the corresponding vertical plate (17) are hinged, the outside of the movable base (11) is connected with a push rod (19), the guide rail (21) is connected to the top of the mounting seat (15), the electric screw (22) is arranged on the mounting seat (15), and the movable base (11) and the mounting seat (15) are both provided with a through hole (16) for the sampling tube (6) to be raised and lowered.

5. A soil fixed depth sampling device for construction engineering according to claim 4, characterized in that: A laser level adjustment mechanism is provided in the middle of the top of the mounting seat (15), and the laser level adjustment mechanism comprises a connecting seat (101) connected to the middle of the top of the mounting seat (15), a ring (103) is rotatably connected in the connecting seat (101) via a rotating shaft three (102), a laser light (105) is rotatably connected in the ring (103) via a rotating shaft four (104), and a photoelectric sensor (106) is installed in the connecting seat (101) and is located directly below the laser light (105).

6. A soil sampling device for construction engineering according to claim 5, characterized in that: The mounting seat (15) is provided with a cleaning mechanism for cleaning the outside of the sampling tube (6). The cleaning mechanism comprises an annular brush (113) rotatably connected to a through hole (16) on the mounting seat (15). The annular brush (113) is used to clean the outside of the sampling tube (6). The mounting seat (15) is connected to a disk (115) via a rotating shaft (114). A slotted swing plate (116) is connected to a side of the annular brush (113) close to the disk (115). A lever (117) is connected to an eccentric position of the disk (115). The lever (117) is located in a slot of the slotted swing plate (116). The screw on the electric screw (22) is transmission-connected to the rotating shaft (114) to drive the rotating shaft (114) to rotate.

7. A soil sampling device for construction engineering according to claim 6, characterized in that: The driving member comprises a slide bar (93) slidably connected to the mounting plate (3), a cover body (96) is mounted on the slide bar (93), a spring (94) is connected between the slide bar (93) and the mounting plate (3), a squeezing rod (95) is connected to the top of the lifting block (23), and the slide bar (93) can contact the squeezing rod (95) as the mounting plate (3) swings upward, and is squeezed downward by the squeezing rod (95).

8. The soil fixed-depth sampling device for construction engineering according to claim 7 is characterized in that: The outer portion of the movable base (11) is connected with nuts (121) at intervals, the inner thread of the nut (121) is connected with a screw rod (122), and the bottom end of the screw rod (122) is connected with a pointed cone (123).

Images