Sampling and detecting device for compacted backfill soil

Abstract

The invention discloses a tamped backfill soil sampling and detecting device which comprises a mounting hanging seat, four driving hydraulic cylinders are fixedly connected to the bottom of the mounting hanging seat, a sampler is fixedly connected to the output ends of the driving hydraulic cylinders, and soil sample floating layer cleaning assemblies are arranged on the two sides of the sampler. Two sampler cleaning assemblies are symmetrically arranged at the top of the mounting hanging seat; the sampler comprises a sampler main body, two outer sliding grooves are symmetrically formed in the outer wall of the sampler main body, and sensors are embedded in the bottoms of the inner walls of the outer sliding grooves; according to the sampling detection device, through the arrangement of the soil sample floating layer cleaning assembly, efficient cleaning of a floating layer can be achieved, specifically, floating dust, moss or loose sediments on the surface of a soil sample are rapidly stripped through the friction and shearing action of a rotary cleaning head, and the soil sample analysis accuracy is remarkably improved; lateral impact is avoided through vertical pressing, excessive compaction is prevented through spring buffering, and the undisturbed soil structure is reserved to the maximum extent; operation is convenient and reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of maintenance of soil sampling and testing equipment. Specifically, it relates to a sampling and testing device for compacted backfill soil after sampling. Background Art

[0002] Backfill soil refers to the soil that is returned and compacted after completing the works below the ground surface such as the foundation. Backfill soil refers to the construction process of taking soil within 5m for backfill after the completion of concealed works such as the foundation and cushion layer.

[0003] The following problems exist in the prior art: In the existing soil sampling and testing technology, because the composition of backfill soil is relatively complex, usually garden soil or hillside soil, which contains more organic substances and small stones, and has impact, adhesiveness and corrosiveness, the sampling mechanism will be damaged from different aspects during sampling, thus affecting the accuracy of the sampled samples. At the same time, due to the complex composition of backfill soil and the change of its surface composition and structure after a certain backfill time, the sampling effect is affected; thus resulting in insufficient representativeness of the samples. Summary of the Invention

[0004] In view of the problems in the related art, the present invention provides a sampling and testing device for compacted backfill soil after sampling to overcome the above technical problems existing in the prior related art.

[0005] For this purpose, the specific technical solution adopted by the present invention is as follows: A sampling and testing device for compacted backfill soil after sampling, including an installation suspension seat, four driving hydraulic cylinders are fixedly connected to the bottom of the installation suspension seat, the output end of the driving hydraulic cylinder is fixedly connected to a sampler, soil sample floating layer cleaning components are arranged on both sides of the sampler, and two sampler cleaning components are symmetrically arranged on the top of the installation suspension seat; The sampler includes a sampler main body, two outer sliding grooves are symmetrically arranged on the outer wall of the sampler main body, sensors are buried at the bottom of the inner wall of the outer sliding groove, several auxiliary impact mechanisms are arranged on the inner wall of the sampler main body, a stable bottom insert is fixedly connected to the bottom of the sampler main body, and side buffer springs are symmetrically arranged on both sides of the sampler main body.

[0006] The sampler main body is a rectangular alloy sampler; The soil sample floating layer cleaning assembly includes an inner sliding seat fittingly and slidably arranged on the inner wall of the outer sliding groove. A upper weight block is fixedly connected to the top of the inner sliding seat. A pressing and rotating mechanism is arranged on the inner wall of the inner sliding seat. A cleaning head is fixedly connected to the bottom of the pressing and rotating mechanism. The pressing and rotating mechanism includes an upper pressing cylinder fixedly arranged on the inner wall of the inner sliding seat. A lower rotating cylinder is slidably connected to the outer wall of the upper pressing cylinder. A pressing spring is elastically connected between the upper pressing cylinder and the lower rotating cylinder. Two vertical sliding grooves and a spiral sliding groove are formed on the outer wall of the lower rotating cylinder, and the two vertical sliding grooves and the two spiral sliding grooves are connected in series with each other. A limiting slider is fixedly connected to the outer wall of the upper pressing cylinder. The outer wall of the limiting slider is fittingly and slidably connected to the outer walls of the vertical sliding grooves and the spiral sliding groove; Preferably, the sensor is a pressure sensor, and the tactile end of the sensor protrudes from the inner wall of the outer sliding groove.

[0007] Preferably, the stable bottom plug includes a bottom plug welded to the bottom of the sampler body. A plurality of stable blocks are equidistantly arranged on the outer wall of the bottom plug. The stable blocks are inclined and upwardly curved, and gaps are formed between the plurality of stable blocks.

[0008] Preferably, the side buffer spring is a leaf spring, and a flat bottom base is welded to the bottom of the side buffer spring.

[0009] Preferably, the auxiliary impact mechanism includes an inner sliding groove opened on the inner wall of the sampler body. A spring chuck is arranged on the inner wall of the inner sliding groove. A clamping seat is clamped to the outer wall of the spring chuck. An impact block is fixedly connected to the bottom of the clamping seat. A sharp insertion plate is fixedly connected to the outer wall of the clamping seat.

[0010] Preferably, the sampler cleaning assembly includes a retracting and releasing motor, a buffer bending spring, a movable pulley, a fixed pulley and a connecting rotating seat. The output end of the retracting and releasing motor is connected with a retracting rope. One end of the retracting rope is fixedly connected to the outer wall of the connecting rotating seat. A dust removing and shaking mechanism is fixedly connected to the outer wall of the connecting rotating seat. An inner cleaning scraper mechanism is fixedly connected to the outer wall of the connecting rotating seat. The two ends of the buffer bending spring are respectively connected to the mounting suspension seat and the connecting rotating seat; The inner cleaning scraper mechanism includes an inner scraper. A single-sided straight chamfer is opened on the bottom side of the inner scraper, and the bottom of the inner scraper forms a thin scraping head by opening the single-sided straight chamfer. An elastic contact head is slidably connected to the inner wall of the inner scraper. The inner wall of the inner scraper is connected to the elastic contact head through several springs; The dust removing and shaking mechanism includes a right-angle connecting piece fixedly arranged thereon. A shaking connecting plate is hinged to the inner wall of the right-angle connecting piece. A corrugated groove is opened on the inner side of the shaking connecting plate. One end of the shaking connecting plate is connected with an anti-floating block; The shaking connecting plate is movably connected with the connecting rotating seat, and the connecting angle between the inner scraper and the connecting rotating seat is fixedly arranged.

[0011] Preferably, the retracting and extending motor includes a housing and an internal motor body, and an output shaft of the motor body is fixedly connected to a winding rod through a coupling, and an outer wall of the winding rod is fixedly connected to one end of a pulling rope.

[0012] Preferably, both ends of the connecting swivel are fixedly connected with short pins, and an outer wall of the short pins is movably and fittingly connected with an inner wall of the mounting suspension seat.

[0013] Preferably, one end of the anti-floating block is threadedly connected to the bottom of the [object not specified], and a lead ball block is packed inside the anti-floating block.

[0014] Preferably, both the impact block and the upper weight block are packed with lead blocks inside.

[0015] The beneficial effects of the present invention are as follows: 1. For the sampling and testing device after ramming of backfill soil, through the setting of the soil sample floating layer cleaning component, the following can be achieved: efficient cleaning of the floating layer: the rotating cleaning head 204 quickly peels off the floating dust, moss or loose sediment on the surface of the soil sample through friction and shearing actions, significantly improving the accuracy of soil sample analysis; protecting the integrity of the soil sample: vertical downward pressure avoids lateral impact, and spring buffering prevents over-compaction, maximizing the retention of the original soil structure; convenient and reliable operation: a single downward pressure can complete the entire process of "contact - cleaning - reset", reducing the complexity of manual operation; a pure mechanical structure is suitable for harsh field environments; compatibility is optimized.

[0016] 2. For the sampling and testing device after ramming of backfill soil, through the setting of the sampler cleaning component, deep cleaning: the combination of the thin scraping head and the elastic design thoroughly removes the soil attached to the inner wall of the sampler body and protects the alloy surface of the sampler body; anti-residue design: the vibrating connecting plate actively shakes off the accumulated soil to avoid secondary pollution of the sampler body; convenient operation: the retracting and extending motor drives the inner scraper to be lowered, so that the inner scraper and the elastic contact head actively clean the inside of the sampler body during the recovery process of the sampler body, reducing the intensity of manual cleaning; the buffer spring improves the durability of the mechanism.

[0017] 3. After the backfill soil is tamped, the sampling and testing device is equipped with a sampler. The stable bottom of the sampler body first contacts the cleaned soil surface. The bottom plug is in an inverted conical shape as a whole. During the falling process of the sampler body, the insertion pressure is reduced, making it easier to enter the soil layer. The stabilizing blocks are arranged on the outer wall of the bottom plug, which increases the contact area with the ground and reduces the sliding of the sampler body when inserted into the soil layer, ensuring the stable insertion of the sampler body into the coating and avoiding the distortion of the sampler body caused by sliding when inserted into the soil layer. The stabilizing blocks are dispersed, reducing the resistance to inserting into the ground and facilitating the smooth insertion into the soil. When the sampler body gradually enters the soil, since the backfill soil contains crushed stones, when the sampler body gets stuck by small stones, an impact force is generated when the sampler body pauses. The impact force opens the connection between the spring chuck and the clamping seat in the auxiliary impact mechanism, and the auxiliary impact mechanism drops. The sharp insertion plate quickly drops under the weight of the impact block. The sharp surfaces on both sides of the sharp insertion plate can reduce the resistance, smoothly reach above the small stones, and squeeze the small stones to both sides. The sampler body can continue to move down for sampling, reducing the situation where the sampler body directly touches the small stones continuously and the bending deformation of the bottom of the inverted conical shape at the bottom of the sampler body, thereby ensuring the quantity of the sampled soil and the sampling position of the sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 Front view of the present invention (sampling state diagram); Figure 2 Side view of the present invention (state diagram waiting for cleaning after sampling); Figure 3 Structural schematic diagram of the soil sample floating layer cleaning component of the present invention; Figure 4 Structural schematic diagram of the pressing and rotating mechanism of the present invention; Figure 5 External structural schematic diagram of the sampler of the present invention; Figure 6 Structural schematic diagram of the auxiliary impact mechanism of the present invention; Figure 7 Structural schematic diagram of the stable bottom plug of the present invention; Figure 8 Structural schematic diagram of the sampler cleaning component of the present invention; Figure 9This is a schematic structural diagram of the internal cleaning scraper mechanism of the present invention; Figure 10 This is a schematic structural diagram of the dust removal and shaking mechanism of the present invention.

[0020] In the figure: 1. Sampler; 101. Sampler main body; 102. Side buffer spring; 103. Outer chute; 104. Sensor; 105. Stable bottom insertion; 1051. Bottom plug; 1052. Stable block; 106. Auxiliary impact mechanism; 1061. Inner chute; 1062. Impact block; 1063. Sharp insertion plate; 1064. Clamping seat; 2. Soil sample floating layer cleaning assembly; 201. Inner sliding seat; 202. Upper weight; 203. Pressing and rotating mechanism; 2031. Upper pressing cylinder; 2032. Pressing spring; 2033. Spiral chute; 2034. Vertical chute; 2035. Lower rotating cylinder; 204. Cleaning head; 3. Sampler cleaning assembly; 301. Dust removal and shaking mechanism; 3011. Shaking plate; 3012. Right-angle connecting piece; 3013. Anti-floating block; 3014. Corrugated groove; 302. Inner cleaning scraper mechanism; 3021. Inner scraper; 3022. Thin scraping head; 3023. Elastic contact head; 303. Connecting rotating seat; 304. Buffer bending spring; 305. Movable pulley; 306. Reeling motor; 307. Fixed pulley; 4. Driving hydraulic cylinder; 5. Installation hanging seat. Detailed implementation manners

[0021] To further illustrate the embodiments, the present invention provides drawings, which are part of the disclosure of the present invention. They are mainly used to illustrate the embodiments and can be combined with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0022] According to an embodiment of the present invention, a sampling and detection device for compacted backfill soil is provided.

[0023] Embodiment 1; As Figures 1 - 10 shown, the sampling and detection device for compacted backfill soil according to an embodiment of the present invention includes an installation hanging seat 5. Four driving hydraulic cylinders 4 are fixedly connected to the bottom of the installation hanging seat 5. The output end of the driving hydraulic cylinder 4 is fixedly connected to a sampler 1. Soil sample floating layer cleaning assemblies 2 are arranged on both sides of the sampler 1. Two sampler cleaning assemblies 3 are symmetrically arranged on the top of the installation hanging seat 5; The sampler main body 101 is a rectangular alloy sampler; The soil sample floating layer cleaning component 2 includes an inner sliding seat 201 that fits and slides on the inner wall of the outer sliding groove 103. A upper weight 202 is fixedly connected to the top of the inner sliding seat 201. A pressing and rotating mechanism 203 is arranged on the inner wall of the inner sliding seat 201. A cleaning head 204 is fixedly connected to the bottom of the pressing and rotating mechanism 203. The pressing and rotating mechanism 203 includes an upper pressing cylinder 2031 fixedly arranged on the inner wall of the inner sliding seat 201. A lower rotating cylinder 2035 is slidably connected to the outer wall of the upper pressing cylinder 2031. A pressing spring 2032 is elastically connected between the upper pressing cylinder 2031 and the lower rotating cylinder 2035. Two vertical sliding grooves 2034 and spiral sliding grooves 2033 are formed on the outer wall of the lower rotating cylinder 2035, and the two vertical sliding grooves 2034 and the two spiral sliding grooves 2033 are connected in series with each other. A limiting slider is fixedly connected to the outer wall of the upper pressing cylinder 2031, and the outer wall of the limiting slider fits and slides with the outer walls of the vertical sliding groove 2034 and the spiral sliding groove 2033; The sampler cleaning component 3 includes a retracting and releasing motor 306, a buffer bending spring 304, a movable pulley 305, a fixed pulley 307, and a connecting rotating seat 303. The output end of the retracting and releasing motor 306 is connected with a retracting and pulling rope. One end of the retracting and pulling rope is fixedly connected to the outer wall of the connecting rotating seat 303. A dust removing and shaking mechanism 301 is fixedly connected to the outer wall of the connecting rotating seat 303. An inner cleaning scraper mechanism 302 is fixedly connected to the outer wall of the connecting rotating seat 303. The two ends of the buffer bending spring 304 are respectively connected with the mounting suspension seat 5 and the connecting rotating seat 303; The inner cleaning scraper mechanism 302 includes an inner scraper 3021. A single-sided straight chamfer is formed on the bottom side of the inner scraper 3021, and a thin scraping head 3022 is formed at the bottom of the inner scraper 3021 by forming the single-sided straight chamfer. An elastic contact head 3023 is slidably connected to the inner wall of the inner scraper 3021. The inner wall of the inner scraper 3021 is connected with the elastic contact head 3023 through several springs; The dust removing and shaking mechanism 301 includes a right-angle connecting piece 3012 fixedly arranged on the upper part. A shaking connecting plate 3011 is hinged to the inner wall of the right-angle connecting piece 3012. A corrugated groove 3014 is formed on the inner side of the shaking connecting plate 3011. A anti-floating block 3013 is connected to one end of the shaking connecting plate 3011; The sensor 104 is a pressure sensor 104, and the touch end of the sensor 104 protrudes from the inner wall of the outer sliding groove 103; The shaking connecting plate 3011 is movably connected with the connecting rotating seat 303, and the connecting angle between the inner scraper 3021 and the connecting rotating seat 303 is fixedly arranged; The retracting and releasing motor 306 includes a housing and an internal motor main body, and the output shaft of the motor main body is fixedly connected with a winding rod through a coupling. The outer wall of the winding rod is fixedly connected with one end of the retracting and pulling rope; Both ends of the connecting rotating seat 303 are fixedly connected with short pins, and the outer walls of the short pins fit and movably connect with the inner walls of the mounting suspension seat 5; One end of the anti-floating block 3013 is threadedly connected to the bottom, and the inner wall of the anti-floating block 3013 is wrapped with lead ball blocks.

[0024] Both the impact block 1062 and the upper weight block 202 are internally wrapped with lead blocks.

[0025] In this embodiment, through the setting of the soil sample floating layer cleaning component 2, the following can be achieved: efficient cleaning of the floating layer: the rotating cleaning head 204 quickly peels off the floating dust, moss or loose sediments on the surface of the soil sample through friction and shearing actions, significantly improving the accuracy of soil sample analysis; protecting the integrity of the soil sample: vertical downward pressure avoids lateral impact, and the spring buffer prevents over-compaction, maximizing the retention of the original soil structure; convenient and reliable operation: a single downward pressure can complete the entire process of "contact - cleaning - reset", reducing the complexity of manual operation; the pure mechanical structure adapts to harsh field environments; compatibility is optimized.

[0026] In this embodiment, through the setting of the sampler cleaning component 3, deep cleaning: the thin scraping head 3022 combined with elastic design thoroughly removes the soil attached to the inner wall of the sampler main body 101 and protects the alloy surface of the sampler main body 101; anti-residual design: the shaking plate 3011 actively shakes off the accumulated soil to avoid secondary pollution of the sampler main body 101; convenient operation: the retracting and extending motor 306 drives the inner scraping plate 3021 to be lowered, so that the inner scraping plate 3021 and the elastic contact head 3023 actively clean the inside of the sampler main body 101 during the recovery process of the sampler main body 101, reducing the intensity of manual cleaning; the buffer spring improves the durability of the mechanism.

[0027] Embodiment Two; Based on Embodiment One, a preferred embodiment of the sampling and testing device for compacted backfill soil provided by the present invention is as Figures 1 - 10 shown: The sampler 1 includes a sampler main body 101. Two outer sliding grooves 103 are symmetrically arranged on the outer wall of the sampler main body 101. A sensor 104 is buried at the bottom of the inner wall of the outer sliding groove 103. Several auxiliary impact mechanisms 106 are arranged on the inner wall of the sampler main body 101. A stable bottom insert 105 is fixedly connected to the bottom of the sampler main body 101. Side buffer springs 102 are symmetrically arranged on both sides of the sampler main body 101; The side buffer spring 102 is a leaf spring, and a flat bottom base is welded to the bottom of the side buffer spring 102; The stable bottom insert 105 includes a bottom plug 1051 welded to the bottom of the sampler main body 101. A plurality of stable blocks 1052 are equidistantly arranged on the outer wall of the bottom plug 1051. The stable blocks 1052 are inclined and are bent upward. A gap is formed between the plurality of stable blocks 1052; In this embodiment, through the setting of the side buffer spring 102, when the sampler main body 101 is inserted into the soil to the deepest depth, the setting of the leaf spring can achieve the effect of buffering and limiting the sampler main body 101, avoiding the sampler main body 101 from penetrating too deep into the soil, and further avoiding the entry of organic matter and water in the soil into the electrical mechanism above the sampler main body 101, thereby damaging the electrical mechanism above the sampler main body 101; compared with the setting of the relative fixed limit mechanism, the leaf spring has a better buffering effect, effectively reducing the impact force between the upper end of the sampler main body 101 and the ground, and thus achieving the protection effect on the sampler main body 101 and the mechanisms such as the driving hydraulic cylinder 4 above.

[0028] In this embodiment, the stable bottom plug 105 at the bottom of the sampler main body 101 first contacts the cleaned soil surface. The bottom plug 1051 is generally in an inverted conical shape, reducing the insertion pressure during the falling process of the sampler main body 101 and better entering the soil layer. The stabilizing blocks 1052 are arranged on the outer wall of the bottom plug 1051. By means of the stabilizing blocks 1052, the ground gripping contact area with the ground is increased, reducing the sliding situation of the sampler main body 101 when inserted into the soil layer, so as to ensure the stable insertion of the sampler main body 101 into the coating, and avoiding the sampler main body 101 from being distorted and deformed due to sliding when inserted into the soil layer. The stabilizing blocks 1052 are arranged in a dispersed manner, reducing the resistance to inserting into the ground and facilitating the smooth insertion into the soil.

[0029] Embodiment Three; On the basis of Embodiment One, the preferred embodiment of the backfill soil compaction and sampling detection device provided by the present invention is as Figures 1 - 10 shown: The auxiliary impact mechanism 106 includes an inner chute 1061 opened on the inner wall of the sampler main body 101. The inner wall of the inner chute 1061 is provided with a spring chuck, and a clamping seat 1064 is clamped on the outer wall of the spring chuck. The bottom of the clamping seat 1064 is fixedly connected with an impact block 1062, and the outer wall of the clamping seat 1064 is fixedly connected with a sharp insertion plate 1063.

[0030] In this embodiment, when the sampler main body 101 is gradually inserted into the soil, because the backfill soil is mixed with gravel, when the sampler main body 101 encounters a small stone and gets stuck, while the sampler main body 101 pauses, an impact force is generated. The impact force opens the connection between the spring chuck and the clamping seat 1064 in the auxiliary impact mechanism 106, and the auxiliary impact mechanism 106 drops. The sharp insertion plate 1063 quickly drops under the weight of the impact block 1062. The sharp surfaces on both sides of the sharp insertion plate 1063 can reduce the resistance, smoothly reach above the small stone, and squeeze the small stone to both sides. The sampler main body 101 can continue to move downward for sampling, reducing the situation that the sampler main body 101 directly touches the small stone continuously, and the bending deformation of the bottom of the sampler main body 101 with an inverted conical shape at the bottom caused thereby, and thus ensuring the quantity of the sampled sample and the sampling position of the sample.

[0031] To facilitate the understanding of the above technical solution of the present invention, the working principle or operation mode of the present invention in the actual process will be described in detail below.

[0032] In actual application, during use: by fixedly installing the installation suspension base 5 on the mechanism of a mobile device or a manipulator, and moving the sampling and detection device to a selected backfill soil sampling position, the sampler 1 is moved downward by controlling the four driving hydraulic cylinders 4 for sampling: The sampler main body 101 vertically descends and enters the backfill soil under the pressure of the driving hydraulic cylinder 4; In the state where the sampler 1 is vertically placed, the soil sample floating layer cleaning component 2 descends along the outer sliding groove 103 outside the sampler 1 under the action of gravity. A pressing and rotating mechanism 203 is arranged inside the soil sample floating layer cleaning component 2, and an upper weight 202 is arranged on the inner sliding seat 201. During the sampling process of the sampler 1, the bottom cleaning head 204 of the soil sample floating layer cleaning component 2 contacts the ground. At this time, the sampler 1 continues to descend, and the cleaning head 204 is mechanically linked with the pressing and rotating mechanism 203 and undergoes the following process under the action of the pressing and rotating mechanism 203: Initial state: The limit slider is located at the top of the vertical sliding groove 2034, the pressing spring 2032 is in a natural extended state, and the cleaning head 204 is suspended; Pressing stage: External force presses the upper weight 202 → the upper pressing cylinder 2031 moves downward → the limit slider slides downward along the vertical sliding groove 2034 → the cleaning head 204 vertically contacts the soil sample surface, and there is no rotation at this time; Rotation triggering stage: When the limit slider reaches the bottom end of the vertical sliding groove 2034, it enters the spiral sliding groove 2033 → under the continuous downward pressure, the limit slider moves along the spiral track → forcing the lower rotating cylinder 2035 to rotate relative to the upper pressing cylinder → driving the cleaning head 204 to rotate; Reset stage: Remove the external force → the pressing spring 2032 rebounds → push the upper pressing cylinder 2031 upward → the limit slider moves reversely along the spiral sliding groove 2033 to the vertical sliding groove 2034 → finally reset to the initial position; After the soil sample floating layer cleaning component 2 drives the soil sample floating layer cleaning component 2 to clean the ground during the vertical descent of the sampler main body 101, the sampler main body 101 continues to descend. At this time, the soil sample floating layer cleaning component 2 slides along the inner wall of the outer sliding groove 103 and is finally left on the soil surface under the pressure of the soil layer. The soil sample floating layer cleaning component 2 is above the sampler main body 101 relative to the sampler main body 101; Before the sampler body 101 is inserted into the soil, the sensor 104 on the inner wall of the outer chute 103 is powered off. When the sampler body 101 is inserted into the soil, the sensor 104 is powered on to make the sensor 104 start working. After the sampler body 101 takes the sample and is pulled out upward, for the soil sample floating layer cleaning assembly 2 relative to the sampler body 101, the soil sample floating layer cleaning assembly 2 also slowly moves down. When the soil sample floating layer cleaning assembly 2 contacts the bottom of the inner wall of the outer chute 103, the sensor 104 is triggered to turn on the retracting and releasing motor 306 on the sampler cleaning assembly 3 to work: The retracting and releasing motor 306 winds and pulls the pull rope to make the connecting turntable 303 rotate, and then retracts and releases the dust removal and shaking mechanism 301 and the inner cleaning scraper mechanism 302 on the rotating control connecting turntable 303: When the connecting turntable 303 drives the rotation, the inner cleaning scraper mechanism 302 is vertically arranged above the sampler body 101. When the sampler body 101 moves upward through the driving hydraulic cylinder 4, relative movement occurs between the sampler body 101, the inner scraper 3021 and the elastic contact head 3023. The inner wall of the sampler body 101 is scraped and cleaned by the thin scraping head 3022 on the inner scraper 3021 and the elastic contact head 3023: Inner cleaning scraper mechanism 302: The thin scraping head 3022 forms a thin edge through a single-sided straight chamfer to scrape the soil attached to the inner wall of the sampler body 101; the elastic contact head 3023 buffers the pressure to prevent scratching the wall of the device; At this time, the corrugated groove 3014 on the outer wall of the shaking plate 3011 is lapped with the outer wall of the sampler body 101; Whenever the sampler body 101 continues to move upward, the shaking plate 3011 and the sampler body 101 move relative to each other, causing slight collision vibrations, and vibrating off the soil particles that have not been scraped off on the sampler body 101, increasing the cleaning effect of the sampler body 101; The shaking plate 3011 generates vibrations through the corrugated groove 3014 to shake off the residual soil accumulated on the scraper; the anti-floating block 3013 increases the weight to suppress the shaking.

[0033] Power control: The retracting and releasing motor 306 winds and pulls the pull rope through the fixed pulley 307 and the movable pulley 305 to control the lifting of the connecting turntable 303; the buffer bending spring 304 relieves the impact force during the lowering process of the dust removal and shaking mechanism 301 and the inner cleaning scraper mechanism 302.

[0034] In summary, by means of the above technical solutions of the present invention, for the sampling detection device after ramming the backfill soil, through the setting of the soil sample floating layer cleaning component 2, the following can be achieved: efficient cleaning of the floating layer: the rotating cleaning head 204 quickly strips the floating dust, moss or loose sediment on the surface of the soil sample through friction and shearing actions, significantly improving the accuracy of soil sample analysis; protecting the integrity of the soil sample: vertical downward pressure avoids lateral impact, and spring buffering prevents over-compaction, maximizing the retention of the original soil structure; convenient and reliable operation: a single downward pressure can complete the entire process of "contact - cleaning - reset", reducing the complexity of manual operation; a pure mechanical structure adapts to harsh field environments; compatibility optimization; through the setting of the sampler cleaning component 3, deep cleaning: the combination of the thin scraping head 3022 and the elastic design thoroughly removes the soil attached to the inner wall of the sampler main body 101 and protects the alloy surface of the sampler main body 101; anti-residual design: the vibrating connecting plate 3011 actively shakes off the accumulated soil to avoid secondary pollution of the sampler main body 101; convenient operation: the retracting and releasing motor 306 drives the inner scraping plate 3021 to be lowered, so that the inner scraping plate 3021 and the elastic contact head 3023 actively clean the inside of the sampler main body 101 during the recovery process of the sampler main body 101, reducing the intensity of manual cleaning; the buffer spring improves the durability of the mechanism; the stable bottom insertion 105 at the bottom of the sampler main body 101 first contacts the cleaned soil surface. The bottom plug 1051 is overall in an inverted conical shape, which reduces the insertion pressure during the falling process of the sampler main body 101 and better enters the soil layer. The stabilizing blocks 1052 provided on the outer wall of the bottom plug 1051 increase the ground gripping contact area through the stabilizing blocks 1052, reducing the sliding situation of the sampler main body 101 when inserted into the soil layer, so as to ensure the stable insertion of the sampler main body 101 into the coating, avoiding the sampler main body 101 from being distorted due to sliding when inserted into the soil layer. The stabilizing blocks 1052 are dispersedly arranged, reducing the resistance to inserting into the ground and facilitating smooth insertion into the soil; when the sampler main body 101 gradually enters the soil, since the backfill soil contains crushed stones, when the sampler main body 101 encounters a small stone and gets stuck, while the sampler main body 101 pauses, an impact force is generated. The impact force opens the connection between the spring chuck and the clamping seat 1064 in the auxiliary impact mechanism 106, and the auxiliary impact mechanism 106 drops. The sharp insertion plate 1063 quickly drops under the weight of the impact block 1062. The sharp surfaces on both sides of the sharp insertion plate 1063 can reduce the resistance, smoothly reach above the small stone, and squeeze the small stone to both sides. The sampler main body 101 can continue to move downward for sampling, reducing the situation where the sampler main body 101 directly abuts against the small stone continuously, and the bending deformation of the bottom of the inverted conical setting at the bottom of the sampler main body 101 caused thereby, thus ensuring the quantity of the sampled soil and the sampling position of the sample.

[0035] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sampling and testing device for compacted backfill soil, comprising a mounting suspension seat (5), characterized in that, Four driving hydraulic cylinders (4) are fixedly connected to the bottom of the installation suspension seat (5). The output end of the driving hydraulic cylinder (4) is fixedly connected to a sampler (1). Soil sample floating layer cleaning components (2) are arranged on both sides of the sampler (1). Two sampler cleaning components (3) are symmetrically arranged at the top of the installation suspension seat (5). The sampler (1) includes a sampler main body (101). Two outer sliding grooves (103) are symmetrically arranged on the outer wall of the sampler main body (101). A sensor (104) is buried at the bottom of the inner wall of the outer sliding groove (103). Several auxiliary impact mechanisms (106) are arranged on the inner wall of the sampler main body (101). A stable bottom plug (105) is fixedly connected to the bottom of the sampler main body (101). Side buffer springs (102) are symmetrically arranged on both sides of the sampler main body (101). The sampler main body (101) is a rectangular alloy sampler. The soil sample floating layer cleaning component (2) includes an inner sliding seat (201) that fits and slides on the inner wall of the outer sliding groove (103). An upper weight (202) is fixedly connected to the top of the inner sliding seat (201). A pressing and rotating mechanism (203) is arranged on the inner wall of the inner sliding seat (201). A cleaning head (204) is fixedly connected to the bottom of the pressing and rotating mechanism (203). The pressing and rotating mechanism (203) includes an upper pressing cylinder (2031) fixedly arranged on the inner wall of the inner sliding seat (201). A lower rotating cylinder (2035) is slidably connected to the outer wall of the upper pressing cylinder (2031). A pressing spring (2032) is elastically connected between the upper pressing cylinder (2031) and the lower rotating cylinder (2035). Two vertical sliding grooves (2034) and a spiral sliding groove (2033) are arranged on the outer wall of the lower rotating cylinder (2035), and the two vertical sliding grooves (2034) and the two spiral sliding grooves (2033) are connected in series with each other. A limiting slider is fixedly connected to the outer wall of the upper pressing cylinder (2031), and the outer wall of the limiting slider fits and slides with the outer walls of the vertical sliding groove (2034) and the spiral sliding groove (2033).

2. The sampling and testing device for compacted backfill soil according to claim 1, wherein, The sensor (104) is a pressure sensor (104), and the touch end of the sensor (104) protrudes from the inner wall of the outer sliding groove (103).

3. The sampling and testing device for compacted backfill soil according to claim 1, wherein The stable bottom plug (105) includes a bottom plug (1051) welded to the bottom of the sampler main body (101). A plurality of stable blocks (1052) are equidistantly arranged on the outer wall of the bottom plug (1051). The stable blocks (1052) are inclined and are bent upward. Spaces are formed between the plurality of stable blocks (1052).

4. The sampling and testing device for compacted backfill soil according to claim 1, characterized in that, The side buffer spring (102) is a leaf spring, and a flat bottom base is welded to the bottom of the side buffer spring (102).

5. The sampling and testing device for the compacted backfill soil according to claim 1, characterized in that, The auxiliary impact mechanism (106) includes an inner chute (1061) formed on the inner wall of the sampler body (101). The inner wall of the inner chute (1061) is provided with a spring chuck, and the outer wall of the spring chuck is clamped with a clamping seat (1064). The bottom of the clamping seat (1064) is fixedly connected with an impact block (1062), and the outer wall of the clamping seat (1064) is fixedly connected with a sharp insertion plate (1063).

6. The sampling and testing device for compacted backfill soil according to claim 1, wherein The sampler cleaning assembly (3) includes a retracting and releasing motor (306), a buffer bending spring (304), a movable pulley (305), a fixed pulley (307) and a connecting rotating seat (303). The output end of the retracting and releasing motor (306) is connected with a retracting rope. One end of the retracting rope is fixedly connected with the outer wall of the connecting rotating seat (303). The outer wall of the connecting rotating seat (303) is fixedly connected with a dust removal and shaking mechanism (301), and the outer wall of the connecting rotating seat (303) is fixedly connected with an inner cleaning scraper mechanism (302). The two ends of the buffer bending spring (304) are respectively connected with the installation hanging seat (5) and the connecting rotating seat (303); The inner cleaning scraper mechanism (302) includes an inner scraper (3021). A single-sided straight chamfer is formed on the bottom side of the inner scraper (3021), and a thin scraping head (3022) is formed at the bottom of the inner scraper (3021) by forming the single-sided straight chamfer. An elastic contact head (3023) is slidably connected to the inner wall of the inner scraper (3021), and the inner wall of the inner scraper (3021) is connected with the elastic contact head (3023) through several springs; The dust removal and shaking mechanism (301) includes a right-angle connecting piece (3012) fixedly arranged thereon. A shaking connecting plate (3011) is hinged to the inner wall of the right-angle connecting piece (3012). A corrugated groove (3014) is formed on the inner side of the shaking connecting plate (3011), and one end of the shaking connecting plate (3011) is connected with an anti-floating block (3013); The shaking connecting plate (3011) is movably connected with the connecting rotating seat (303), and the connecting angle between the inner scraper (3021) and the connecting rotating seat (303) is fixedly arranged.

7. The sampling and testing device for compacted backfill soil according to claim 6, wherein The retracting and releasing motor (306) includes a housing and an internal motor body, and the output shaft of the motor body is fixedly connected with a winding rod through a coupling. The outer wall of the winding rod is fixedly connected with one end of the retracting rope.

8. The sampling and testing device for the backfill soil after compaction according to claim 6, characterized in that, Both ends of the connecting rotating seat (303) are fixedly connected with short pins, and the outer walls of the short pins are fitted and movably connected with the inner walls of the installation hanging seat (5).

9. The sampling and testing device for compacted backfill soil according to claim 6, characterized in that, One end of the anti-floating block (3013) is threadedly connected with the bottom of, and the inner wall of the anti-floating block (3013) is wrapped with a lead ball block.

10. The sampling and testing device for compacted backfill soil according to claim 5, characterized in that, Both the impact block (1062) and the upper weight block (202) are wrapped with lead blocks inside.

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