A soil compaction detection device for water conservancy projects

Abstract

The present invention relates to the technical field of compaction detection devices, and in particular to a soil compaction detection device for water conservancy projects. It comprises a fixed rod, the bottom end of which is fixedly connected with a guide block with circumferentially equal spacing, the guide block is slidably connected with a sliding plate, the lower side of the sliding plate is fixedly connected with an arc-shaped connecting plate, the inner wall of the arc-shaped connecting plate is provided with a groove, and the grooves of the arc-shaped connecting plates with circumferentially equal spacing are jointly provided with a ring knife, and the ring knife cooperates with the groove of the arc-shaped connecting plate in a limiting manner. The present invention utilizes four arc-shaped connecting plates to drive the ring knife to sample the soil, which reduces the process of removing the soil around the ring knife and reduces the damage to the ground, and is more convenient to use. At the same time, the four arc-shaped connecting plates are used to drive the ring knife to cut the soil downward, so as to avoid the two ends of the soil sample being squeezed and loosened, resulting in incomplete filling of the sample in the ring knife, causing sampling failure.

Description

Technical Field

[0001] The invention relates to the technical field of compaction detection devices, and in particular to an earthwork compaction detection device for water conservancy projects. Background Art

[0002] Compactness is the ratio of the actual dry density of the soil after construction to the maximum dry density of the soil. The maximum dry density is obtained through a standard compaction test, which indicates the maximum density that the soil can achieve under specific conditions. The compaction degree test of earthwork in water conservancy projects is an important quality control measure, which ensures the stability and durability of the soil structure and the safety of hydraulic structures such as dams, reservoirs, and channels.

[0003] Existing methods for compaction detection include the ring knife method and the sand filling method. The ring knife method uses a ring knife to cut out the soil and then detects its quality and water content. The ring knife method must ensure that the upper and lower sides of the soil sample are flush with the upper and lower sides of the ring knife when measuring and detecting the compaction. When the existing ring knife cuts the soil, it presses the ring knife down by knocking on the top plate, and the cutting depth of the ring knife is limited. After the ring knife is inserted into the soil, the top plate will be squeezed on the upper side of the soil, causing the ring knife to vibrate in the soil, thereby loosening the soil in the ring knife. The compacted soil cannot be flush with the two sides of the ring knife, resulting in failure. In addition, the impact force received by the ring knife in the process of taking soil can easily cause the ring knife to deform, thereby causing an error in the ratio between the volume and mass of the soil sample taken by the ring knife. Summary of the invention

[0004] In order to overcome the disadvantage that the soil sample is loose and cannot completely fill the ring knife when detecting the compaction degree of earthwork in the existing ring knife method, a soil compaction degree detection device for water conservancy projects is provided.

[0005] The technical solution is as follows: A soil compaction detection device for water conservancy projects, comprising a fixed rod, the bottom end of the fixed rod is fixedly connected to a guide block with equal circumferential spacing, the guide block is slidably connected to a sliding plate, the lower side of the sliding plate is fixedly connected to an arc-shaped connecting plate, the arc-shaped connecting plates with equal circumferential spacing cooperate to form a circular cylinder, the inner wall of the arc-shaped connecting plate is provided with grooves, and the grooves of the arc-shaped connecting plates with equal circumferential spacing are jointly provided with ring knives, the ring knives and the grooves of the arc-shaped connecting plates are limited in position, the fixed rod is slidably connected to a threaded sleeve, the outer sides of the sliding plates with equal circumferential spacing are provided with threads, the threaded sleeves are threadedly connected to the threads of the sliding plates with equal circumferential spacing, and the threaded sleeves are used to limit the sliding plates with equal circumferential spacing.

[0006] Furthermore, the sliding plates are arranged in an arc shape, and the sliding plates which are circumferentially evenly spaced contact each other to form a round tube with threads, thereby ensuring that the sliding plates move the same distance along adjacent guide blocks.

[0007] Furthermore, an arcuate slide is provided on the lower side of the arc connecting plate, and an arcuate step surface is provided on the lower side of the arc connecting plate, and an arcuate protrusion is provided on the inner annular surface of the arcuate slide, and the annular protrusion of the arcuate slide slide is slidably matched with the step surface of the arc connecting plate, and the side wall thickness of the arc connecting plate is the same as the side wall thickness of the arcuate slide, and the arc connecting plate is fixedly connected with a fixed tube, wherein two fixed tubes on opposite sides are slidably connected with sliding rods, and the lower ends of the sliding rods are fixedly connected to adjacent arcuate slides, and the sliding rods are fixedly connected to a limiting plate, and the limiting plate is located above the adjacent arc connecting plates, and in addition, two symmetrical fixed tubes are slidably connected with sliding tubes, and a through groove is provided on the side of the sliding tube close to the adjacent arc connecting plate, and the lower ends of the sliding tubes are fixedly connected to the adjacent arcuate slides.

[0008] Furthermore, an arc-shaped groove is provided at the step surface of the arc-shaped connecting plate, and the arc-shaped protrusion of the arc-shaped sliding plate is used to close the arc-shaped groove at the step surface of the arc-shaped connecting plate.

[0009] Furthermore, a fixing ring is fixedly connected to the lower part of the fixing rod, and the fixing ring is located above the arc-shaped connecting plate. A sliding sleeve is slidably connected to the lower part of the fixing rod, and the sliding sleeve is located above the fixing ring. A spring is fixedly connected between the fixing ring and the sliding sleeve. The sliding sleeve is slidably connected to sliding parts with circumferential equal spacing. The sliding tube and the sliding rod are respectively fixed to adjacent sliding parts. The sliding sleeve is fixedly connected to a symmetrical fixing plate. The fixing rod is fixedly connected to an impact plate, and the impact plate is located on the upper side of the sliding sleeve. The impact plate is used to limit the sliding sleeve.

[0010] Furthermore, the lower ends of the sliding rod and the sliding tube are both configured as pointed ends, so as to reduce resistance during the insertion process.

[0011] Furthermore, the fixed rod is slidably connected to an impact hammer, the lower side of the impact hammer is limitedly matched with the impact plate, the fixed rod is provided with two sliding grooves, the inner wall of the impact hammer is fixedly connected to a telescopic column, the telescopic end of the telescopic column is limitedly matched with the sliding groove of the fixed rod, and the lower side of the impact hammer is fixedly connected to a symmetrical fixed column, and the fixed column is squeezed and matched with the adjacent fixed plate.

[0012] Furthermore, it also includes an auxiliary cutting mechanism, which is used to cut off the lower side of the soil sample, and the auxiliary cutting mechanism is arranged at the arc-shaped groove of the arc-shaped connecting plate. The auxiliary cutting mechanism includes two symmetrical cutting ropes, and the two cutting ropes are respectively arranged in the arc-shaped grooves of the arc-shaped connecting plate with equal circumferential spacing, and the two ends of the cutting rope respectively pass through the symmetrical arc-shaped connecting plates, and a sliding block is slidably connected in the sliding tube, and the two ends of the cutting rope are respectively fixedly connected to adjacent sliding blocks, and a symmetrical tensioning rope is slidably connected between the sliding tube and the fixed rod, and one end of the tensioning rope is fixedly connected to the adjacent sliding block, and a winding assembly is provided at the top of the fixed rod, and the winding assembly is used to tighten the two cutting ropes.

[0013] Furthermore, the cutting rope is configured as a flexible steel wire for cutting the lower side of the soil sample.

[0014] Furthermore, the winding assembly includes a fixed seat, the fixed seat is fixed to the top end of the fixed rod, the fixed seat is rotatably connected to a winding roller, the winding roller is fixed to the symmetrical tensioning rope, both ends of the winding roller are installed with one-way wheels, the outer rings of the symmetrical one-way wheels are commonly fixed with a rotating handle, the rotating handle is provided with an arc-shaped groove, and the arc-shaped groove of the rotating handle is limitedly matched with the fixed rod.

[0015] The beneficial effects of the present invention are as follows: the present invention utilizes four arc-shaped connecting plates to drive the ring knife to sample the earth, which reduces the process of removing the soil around the ring knife and reduces the damage to the ground, making it more convenient to use. At the same time, the four arc-shaped connecting plates are used to drive the ring knife to cut the soil downward, thereby preventing the two ends of the soil sample from being squeezed and loosened, resulting in incomplete filling of the sample in the ring knife and causing sampling failure. At the same time, the four arc-shaped connecting plates protect the ring knife, reducing the deformation of the ring knife during the process of inserting the ring knife into the soil, and improving the accuracy of the earth compaction detection value. The present invention utilizes two cutting ropes to cut the soil over a large area, and then in the process of the staff pulling up the fixing rod, the soil sample breaks at the cutting rope, reducing the force required for the staff to pull up the fixing rod. At the same time, the broken part of the soil sample is located below the ring knife, thereby ensuring that the soil sample in the ring knife remains in a fully filled state, which is convenient for the subsequent staff to level the soil sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of parts such as an arc-shaped connecting plate and an arc-shaped sliding plate of the present invention;

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the sliding plate and the arc-shaped connecting plate and other parts of the present invention;

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the arc-shaped connecting plate and the ring cutter and other parts of the present invention;

[0020] Figure 5 It is a cross-sectional view of the fixed tube, sliding rod and other parts of the present invention;

[0021] Figure 6 It is a cross-sectional view of parts such as a fixed tube and a sliding tube of the present invention;

[0022] Figure 7 is a cross-sectional view of the sliding sleeve and the impact plate of the present invention;

[0023] Figure 8 It is a three-dimensional structural schematic diagram of the arc-shaped connecting plate and the cutting rope and other parts of the present invention;

[0024] Fig. 9 is a cross-sectional view of an impact hammer of the present invention;

[0025] Fig.10 It is a cross-sectional view of the fixing rod of the present invention.

[0026] Markings in the accompanying drawings: 1: fixed rod, 2: guide block, 3: sliding plate, 4: arc-shaped connecting plate, 401: ring knife, 5: threaded sleeve, 6: arc-shaped slide plate, 7: fixed tube, 8: sliding rod, 9: limit plate, 10: sliding tube, 11: fixed ring, 12: sliding sleeve, 13: spring, 14: sliding part, 15: fixed plate, 16: impact plate, 17: impact hammer, 18: telescopic column, 19: fixed column, 20: cutting rope, 21: sliding block, 22: tensioning rope, 23: fixed seat, 24: winding roller, 25: one-way wheel, 26: turning handle. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and the protection scope of the present invention is not limited thereto. The soil in the present invention is in a compacted state.

[0028] Embodiment 1: It has been found through research that when the existing ring cutter cuts soil, the ring cutter is pressed down by knocking the top plate, which limits the cutting depth of the ring cutter, and after the ring cutter is inserted into the soil, the top plate will be squeezed on the upper side of the soil, causing the soil in the ring cutter to become loose, and the compacted soil cannot be flush with both sides of the ring cutter, resulting in failure. By adopting the following implementation method, the loosening of the soil due to vibration is reduced, and the accuracy and success rate of sampling are improved.

[0029] A soil compaction detection device for water conservancy projects, such as Figure 1-Figure 4As shown, it includes a fixed rod 1, the bottom end of the fixed rod 1 is fixedly connected with four guide blocks 2 with circumferential equal spacing, the guide block 2 is slidably connected with a sliding plate 3, the guide block 2 and the sliding plate 3 are limited and matched, the lower side of the sliding plate 3 is fixedly connected with an arc-shaped connecting plate 4, the four arc-shaped connecting plates 4 with circumferential equal spacing cooperate to form a circular cylinder, the four arc-shaped connecting plates 4 are not sealed, and are used to discharge the air in the four arc-shaped connecting plates 4, the inner wall of the arc-shaped connecting plate 4 is provided with a groove, and the grooves of the four arc-shaped connecting plates 4 are jointly provided with a ring knife 401, the ring knife 401 is limited and matched with the groove of the arc-shaped connecting plate 4, and the four arc-shaped connecting plates 4 drive the ring knife 401 to be inserted into the soil through the groove, so that the ring The knife 401 cuts the required soil. When the ring knife 401 moves downward, it is only subject to the friction resistance of the soil on the inner wall of the ring knife 401. The fixed rod 1 is slidably connected with a threaded sleeve 5. The outer sides of the four sliding plates 3 are all provided with threads. The threads on the outer sides of the four sliding plates 3 are in a continuous state. The threaded sleeve 5 is threadedly connected to the threads of the four sliding plates 3. The threaded sleeve 5 is used to limit the four sliding plates 3 so that the four arc-shaped connecting plates 4 maintain a contact and matching state. The sliding plates 3 are arranged in an arc shape. The sliding plates 3 with equal circumferential spacing contact each other to form a circular tube with threads, ensuring that the sliding plates 3 move the same distance along the adjacent guide blocks 2, thereby avoiding deformation of the four arc-shaped connecting plates 4 during the insertion into the soil.

[0030] like Figure 3-Figure 6 As shown, an arc-shaped slide plate 6 is provided on the lower side of the arc-shaped connecting plate 4, and an arc-shaped step surface is provided on the lower side of the arc-shaped connecting plate 4. An arc-shaped protrusion is provided on the inner annular surface of the arc-shaped slide plate 6. The annular protrusion of the arc-shaped slide plate 6 slides with the step surface of the arc-shaped connecting plate 4. During use, the arc-shaped slide plate 6 and the adjacent arc-shaped connecting plate 4 are always in a fitted state. The side wall thickness of the arc-shaped connecting plate 4 is the same as the side wall thickness of the arc-shaped slide plate 6, which avoids unevenness between the arc-shaped connecting plate 4 and the adjacent arc-shaped slide plates 6, resulting in increased resistance during the insertion of the arc-shaped slide plate 6 into the soil. The arc-shaped connecting plate 4 is fixedly connected with a fixed tube 7, wherein two fixed tubes 7 on opposite sides are slidably connected with a sliding rod 8, and the sliding rod 8 The lower end is fixedly connected to the adjacent arc-shaped slide plate 6, and the sliding rod 8 is fixedly connected to the limiting plate 9. The limiting plate 9 is used to limit the adjacent sliding rod 8 to ensure that the arc-shaped slide plate 6 and the adjacent arc-shaped connecting plate 4 always remain in a connected state. The limiting plate 9 is located above the adjacent arc-shaped connecting plate 4. In addition, a sliding tube 10 is slidably connected in two symmetrical fixed tubes 7. Through grooves are provided on opposite sides of the two sliding tubes 10. The lower end of the sliding tube 10 is fixedly connected to the adjacent arc-shaped slide plate 6. An arc-shaped groove is provided at the step surface of the arc-shaped connecting plate 4. The arc-shaped protrusion of the arc-shaped slide plate 6 is used to close the arc-shaped groove at the step surface of the arc-shaped connecting plate 4 to prevent part of the soil from entering the arc-shaped groove of the arc-shaped connecting plate 4.

[0031] like Figure 4 and Figure 7As shown, a fixing ring 11 is fixedly connected to the lower part of the fixing rod 1, and the fixing ring 11 is located above the arc-shaped connecting plate 4. A sliding sleeve 12 is slidably connected to the lower part of the fixing rod 1, and the sliding sleeve 12 is located above the fixing ring 11. A spring 13 is fixedly connected between the fixing ring 11 and the sliding sleeve 12. The spring 13 is sleeved on the outer side of the fixing rod 1. The spring 13 is initially in a power storage state. The sliding sleeve 12 is slidably connected to four sliding members 14 with equal circumferential spacing. The sliding tube 10 and the sliding rod 8 are respectively fixed to the adjacent sliding members 14. The sliding tube 10 and the sliding rod 8 are respectively The connected sliding members 14 are driven to move synchronously, so that the sliding members 14 slide along the sliding sleeve 12. The sliding sleeve 12 and the four sliding members 14 are always in a connected state. The sliding sleeve 12 is fixedly connected with two symmetrical fixing plates 15. The fixing rod 1 is fixedly connected with an impact plate 16. The impact plate 16 is located on the upper side of the sliding sleeve 12. The impact plate 16 is used to limit the sliding sleeve 12, thereby ensuring that the spring 13 is in a force storage state. The lower ends of the sliding rod 8 and the sliding tube 10 are both set as pointed ends to reduce the resistance during the insertion process and improve the practicability of the detection device.

[0032] like Figure 1 and Fig. 9 As shown, the fixed rod 1 is slidably connected with an impact hammer 17, and the lower side of the impact hammer 17 is limitedly matched with the impact plate 16. The impact hammer 17 falls freely and collides with the impact plate 16 to generate impact force, so that the four arc-shaped connecting plates 4 and the four arc-shaped slide plates 6 are inserted into the soil. The fixed rod 1 is provided with two slide grooves, and the inner wall of the impact hammer 17 is fixedly connected with a telescopic column 18. The telescopic end of the telescopic column 18 is limitedly matched with the two slide grooves of the fixed rod 1. The telescopic end of the telescopic column 18 is used to slide along the slide groove of the fixed rod 1 to prevent the impact hammer 17 from twisting when it falls freely. Two symmetrical fixed columns 19 are fixedly connected to the lower side of the impact hammer 17, and the fixed columns 19 are squeezed and matched with the adjacent fixed plates 15. The two fixed columns 19 are used to collide with the adjacent fixed plates 15, so that the two fixed plates 15 drive the sliding sleeve 12 to slide downward along the fixed rod 1.

[0033] When using the device to detect the compaction degree of soil, the worker first rotates the threaded sleeve 5 clockwise to release the threaded connection between the threaded sleeve 5 and the four sliding plates 3, and then the worker pulls the four arc-shaped connecting plates 4 outward in turn, and the four arc-shaped connecting plates 4 move away from each other, and the sliding plates 3 connected to the arc-shaped connecting plates 4 slide along the adjacent guide blocks 2, and the arc-shaped connecting plates 4 drive the parts thereon to move synchronously. At this time, the two sliding rods 8 both drive the sliding parts 14 connected thereto to slide away from each other along the sliding sleeve 12, and at the same time, the two sliding tubes 10 both drive the sliding parts 14 connected thereto to slide away from each other along the sliding sleeve 12 until they reach Figure 3In the displayed state, the staff then places the ring knife 401 between the four arc-shaped connecting plates 4 from the bottom, and then pushes the four arc-shaped connecting plates 4 in turn to make the four arc-shaped connecting plates 4 contact and cooperate with each other again. At the same time, the parts on the four arc-shaped connecting plates 4 are reset, and the four sliding members 14 are reset at the same time.

[0034] After the four arc-shaped connecting plates 4 are reset and matched with each other again, the four sliding plates 3 also match and contact each other. The staff rotates the threaded sleeve 5 counterclockwise to make the threaded sleeve 5 and the four sliding plates 3 threadedly matched again. The threaded sleeve 5 limits the four sliding plates 3, thereby ensuring that the four arc-shaped connecting plates 4 form a circular cylinder. In the process of the four arc-shaped connecting plates 4 moving closer to each other, the ring knife 401 is simultaneously stuck in the grooves of the four arc-shaped connecting plates 4, and the grooves of the four arc-shaped connecting plates 4 simultaneously limit the ring knife 401, and the inner side wall of the ring knife 401 is flush with the inner side wall of the circular cylinder formed by the four arc-shaped connecting plates 4.

[0035] The staff moves the detection device to the position to be detected, and then the staff makes the fixed rod 1 in a state perpendicular to the ground, and then the staff lifts the impact hammer 17 upward, and the impact hammer 17 slides upward along the fixed rod 1. At this time, the telescopic end of the telescopic column 18 slides along the slide groove on the left side of the fixed rod 1 until the telescopic column 18 moves to the top of the slide groove on the left side of the fixed rod 1. Then the staff lets go and lets the impact hammer 17 fall freely. The impact hammer 17 slides downward along the fixed rod 1 under the action of gravity, and the lower side of the impact hammer 17 hits the upper side of the impact plate 16. Under the limiting action of the left side slide groove of the fixed rod 1, the impact hammer 17 will not twist, the fixed column 19 does not contact the adjacent fixed plate 15, and the impact force exerted on the impact plate 16 acts on the four arc-shaped connecting plates 4 through the fixed rod 1 and the four guide blocks 2. The arc-shaped connecting plates 4 and the arc-shaped slide plates 6 thereon are inserted into the soil under the impact force. The staff repeatedly lifts the impact hammer 17, thereby gradually inserting the four arc-shaped connecting plates 4 and the four arc-shaped slide plates 6 into the ground, and the soil (compacted state) in the four arc-shaped connecting plates 4 enters the ring knife 401.

[0036] As the impact hammer 17 continuously strikes the impact plate 16, until the inner tops of the four arc-shaped connecting plates 4 touch the soil, the worker stops lifting the impact hammer 17, and then rotates the impact hammer 17 counterclockwise. When the impact hammer 17 rotates, the telescopic column 18 is squeezed and contracted by the left slide groove of the fixed rod 1. When the telescopic end of the telescopic column 18 is in the slide groove on the front side of the fixed rod 1, the telescopic end of the telescopic column 18 extends again and cooperates with the sliding limit of the slide groove on the front side of the fixed rod 1. Then the worker repeats the action of lifting the impact hammer 17 again. When the impact hammer 17 falls again, the lower end of the fixed column 19 will impact the adjacent fixed plate 15. The length of the fixed column 19 is greater than the distance the fixed plate 15 moves downward (the lower side of the impact hammer 17 is not in contact with the impact plate 16). The sliding sleeve 12 uses two sliding rods 8 and two sliding tubes 10 to synchronously drive the four arc-shaped slide plates 6 to continue to be inserted downward until the two limit plates 9 contact the upper side surfaces of the adjacent arc-shaped connecting plates 4, thereby ensuring that the arc-shaped slide plates 6 are always in contact with the adjacent arc-shaped connecting plates 4. After the two limit plates 9 are respectively in contact with the upper sides of the adjacent arc-shaped connecting plates 4, the staff stops lifting the impact hammer 17. In the process of the sliding sleeve 12 sliding downward along the fixed rod 1, the spring 13 is compressed, and the friction force between the four arc-shaped slide plates 6 and the soil is greater than the elastic force of the spring 13. In the initial state, the spring 13 is in a stored force state, which is used to ensure that the arc-shaped slide plates 6 and the adjacent arc-shaped connecting plates 4 remain in a fit state.

[0037] Then the staff pulls up the fixing rod 1 to remove the four arc-shaped connecting plates 4 and the four arc-shaped sliding plates 6 from the soil. The present invention utilizes the four arc-shaped connecting plates 4 to drive the ring knife 401 to sample the earth, thereby reducing the process of removing the soil around the ring knife 401 and reducing damage to the ground. At the same time, the four arc-shaped connecting plates 4 are used to drive the ring knife 401 to cut the soil downward, thereby preventing the two ends of the soil sample from being squeezed and loosened, resulting in incomplete filling of the sample in the ring knife 401 and causing sampling failure. At the same time, the four arc-shaped connecting plates 4 protect the ring knife 401, reducing the deformation of the ring knife 401 during the process of being inserted into the soil, thereby improving the accuracy of the earth compaction detection value. , the four arc-shaped connecting plates 4 bring out the ring knife 401 and the samples therein synchronously, and then the staff takes out the ring knife 401 and the samples in the middle thereof from between the four arc-shaped connecting plates 4. At the same time, the staff cleans the residual soil between the four arc-shaped connecting plates 4 and the four arc-shaped sliding plates 6. In the process of cleaning the residual soil, under the elastic force of the spring 13, the sliding sleeve 12 drives the two sliding rods 8 and the sliding tube 10 to reset respectively through the four sliding parts 14, and then the staff continues to put the ring knife 401 between the four arc-shaped connecting plates 4, so that the groove of the arc-shaped connecting plate 4 limits the ring knife 401 again, and then samples other detection points.

[0038] Embodiment 2: Based on embodiment 1, Figure 6 and Figure 8 As shown, it also includes an auxiliary cutting mechanism, which is used to cut off the lower side of the soil sample. The auxiliary cutting mechanism is arranged at the arc groove of the arc connecting plate 4. The auxiliary cutting mechanism includes two symmetrical cutting ropes 20. The two cutting ropes 20 are respectively arranged in the arc grooves of the four arc connecting plates 4. The two ends of the cutting rope 20 respectively penetrate the two arc connecting plates 4 close to the two sliding tubes 10. During the tightening process, the two cutting ropes 20 will come close to each other and cross-cut the soil. There is a sliding connection in the sliding tube 10. The sliding block 21 and the two ends of the cutting rope 20 are respectively fixedly connected to the adjacent sliding blocks 21. The sliding tube 10 and the fixed rod 1 are slidably connected with two symmetrical tensioning ropes 22. The lower ends of the tensioning ropes 22 are fixedly connected to the adjacent sliding blocks 21. The two tensioning ropes 22 are used to pull the adjacent sliding blocks 21 to tighten the two cutting ropes 20 to cut the soil. A winding assembly is provided at the top of the fixed rod 1. The winding assembly is used to tighten the two cutting ropes 20. The cutting ropes 20 are set as flexible steel wires for cutting the lower side of the soil sample.

[0039] like Figure 1 and Fig.10 As shown, the winding assembly includes a fixed seat 23, which is fixedly connected to the top of the fixed rod 1. The fixed seat 23 is rotatably connected to a winding roller 24. The winding roller 24 is fixedly connected to the symmetrical tensioning ropes 22. The winding roller 24 rotates to wind up the two tensioning ropes 22. The two tensioning ropes 22 are initially in a relaxed state. One-way wheels 25 are installed at both ends of the winding roller 24. The outer rings of the two one-way wheels 25 are commonly fixedly connected to a rotating handle 26. The rotating handle 26 is provided with an arc groove. The arc groove of the rotating handle 26 is limitedly matched with the fixed rod 1 to reduce the shaking of the rotating handle 26.

[0040] Before using the device, the staff pulls the arc slide 6 downward in sequence to release the seal of the arc groove of the adjacent arc connecting plate 4 by the arc slide 6. Then the staff inserts the two cutting ropes 20 into the arc grooves of the two arc connecting plates 4 on the same side, and then resets the arc slide 6. In the process of inserting the knife into the soil under the arc connecting plate 4 and the arc slide 6, the arc slide 6 always seals the arc groove of the adjacent arc connecting plate 4. When in use, the cutting rope 20 and the tension rope 22 are kept loose. In the relaxed state, after the arc-shaped connecting plate 4 and the arc-shaped slide plate 6 are inserted into the soil, the arc-shaped slide plate 6 slides downward along the adjacent arc-shaped connecting plate 4, and then the staff swings the rotating handle 26 back and forth, and the rotating handle 26 drives the winding roller 24 to rotate in one direction through the two one-way wheels 25, and the winding roller 24 winds up the two tension ropes 22, and the tension rope 22 slides along the fixed rod 1 and the adjacent sliding tube 10, and the lower end of the tension rope 22 pulls the connected sliding block 21 upward, and the sliding block 21 moves along the adjacent sliding tube The two cutting ropes 20 cut a large area of ​​the soil on the lower side of the arc connecting plate 4, and then in the process of the staff pulling up the fixing rod 1, the soil sample is broken at the cutting rope 20, which reduces the force required for the staff to pull up the fixing rod 1, and at the same time, the broken part of the soil sample is located below the ring knife 401, thereby ensuring that the soil sample in the ring knife 401 remains fully filled, which is convenient for the subsequent staff to level the soil sample.

[0041] When the ring knife 401 and the soil sample inside it need to be taken out, the staff only needs to pull down the two cutting ropes 20. At this time, the cutting ropes 20 are in a loose state. At the same time, the two tensioning ropes 22 pull the winding roller 24 to rotate in the opposite direction. At the same time, the two sliding blocks 21 are reset. After the four arc-shaped connecting plates 4 are separated, the staff takes out the ring knife 401 and the soil sample inside it, and then repeats the above operation to clean the residual soil between the arc-shaped connecting plate 4 and the adjacent arc-shaped sliding plate 6, and places the cutting rope 20 in the arc-shaped groove of the arc-shaped connecting plate 4.

[0042] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present application, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of this application.

Claims

1. A soil compaction detection device for water conservancy projects, characterized in that: The invention comprises a fixed rod (1), the bottom end of which is fixedly connected with a guide block (2) with equal circumferential spacing, the guide block (2) is slidably connected with a sliding plate (3), the lower side of the sliding plate (3) is fixedly connected with an arc-shaped connecting plate (4), the arc-shaped connecting plates (4) with equal circumferential spacing cooperate to form a circular cylinder, the inner wall of the arc-shaped connecting plate (4) is provided with a groove, the grooves of the arc-shaped connecting plates (4) with equal circumferential spacing are jointly provided with a ring knife (401), the ring knife (401) and the groove of the arc-shaped connecting plate (4) are limitedly matched, the fixed rod (1) is slidably connected with a threaded sleeve (5), the outer sides of the sliding plates (3) with equal circumferential spacing are all provided with threads, the threaded sleeve (5) is threadedly connected with the threads of the sliding plates (3) with equal circumferential spacing, and the threaded sleeve (5) is used to limit the sliding plates (3) with equal circumferential spacing.

2. The earthwork compaction detection device for water conservancy engineering according to claim 1, characterized in that: The sliding plates (3) are arranged in an arc shape, and the sliding plates (3) at equal circumferential intervals contact each other to form a round tube with threads, thereby ensuring that the sliding plates (3) move the same distance along adjacent guide blocks (2).

3. The earthwork compaction detection device for water conservancy engineering according to claim 1, characterized in that: The lower side of the arc-shaped connecting plate (4) is provided with an arc-shaped slide plate (6), the lower side of the arc-shaped connecting plate (4) is provided with an arc-shaped step surface, the inner annular surface of the arc-shaped slide plate (6) is provided with an arc-shaped protrusion, the annular protrusion of the arc-shaped slide plate (6) is slidably matched with the step surface of the arc-shaped connecting plate (4), the side wall thickness of the arc-shaped connecting plate (4) is the same as the side wall thickness of the arc-shaped slide plate (6), and the arc-shaped connecting plate (4) is fixedly connected with a fixing tube (7), wherein the inner surfaces of the two fixing tubes (7) on opposite sides are provided with an arc-shaped protrusion. A sliding rod (8) is slidably connected, the lower end of the sliding rod (8) is fixedly connected to the adjacent arc-shaped slide plate (6), the sliding rod (8) is fixedly connected to a limit plate (9), and the limit plate (9) is located above the adjacent arc-shaped connecting plate (4). In addition, a sliding tube (10) is slidably connected in the two symmetrical fixed tubes (7), and a through groove is provided on one side of the sliding tube (10) close to the adjacent arc-shaped connecting plate (4), and the lower end of the sliding tube (10) is fixedly connected to the adjacent arc-shaped slide plate (6).

4. The earthwork compaction detection device for water conservancy engineering according to claim 3, characterized in that: An arc-shaped groove is provided on the step surface of the arc-shaped connecting plate (4), and the arc-shaped protrusion of the arc-shaped sliding plate (6) is used to close the arc-shaped groove on the step surface of the arc-shaped connecting plate (4).

5. The earthwork compaction detection device for water conservancy engineering according to claim 3, characterized in that: A fixing ring (11) is fixedly connected to the lower part of the fixing rod (1), and the fixing ring (11) is located above the arc-shaped connecting plate (4). A sliding sleeve (12) is slidably connected to the lower part of the fixing rod (1), and the sliding sleeve (12) is located above the fixing ring (11). A spring (13) is fixedly connected between the fixing ring (11) and the sliding sleeve (12). The sliding sleeve (12) is slidably connected to sliding members (14) with circumferential equal spacing. The sliding tube (10) and the sliding rod (8) are respectively fixedly connected to adjacent sliding members (14). The sliding sleeve (12) is fixedly connected to a symmetrical fixing plate (15). The fixing rod (1) is fixedly connected to an impact plate (16), and the impact plate (16) is located on the upper side of the sliding sleeve (12). The impact plate (16) is used to limit the sliding sleeve (12).

6. The earthwork compaction detection device for water conservancy engineering according to claim 5, characterized in that: The lower ends of the sliding rod (8) and the sliding tube (10) are both configured as pointed ends, so as to reduce resistance during the insertion process.

7. The earthwork compaction detection device for water conservancy engineering according to claim 5, characterized in that: The fixing rod (1) is slidably connected with an impact hammer (17), the lower side of the impact hammer (17) is limitedly matched with the impact plate (16), the fixing rod (1) is provided with two sliding grooves, the inner wall of the impact hammer (17) is fixedly connected with a telescopic column (18), the telescopic end of the telescopic column (18) is limitedly matched with the sliding groove of the fixing rod (1), the lower side of the impact hammer (17) is fixedly connected with a symmetrical fixing column (19), and the fixing column (19) is pressed and matched with the adjacent fixing plate (15).

8. The earthwork compaction detection device for water conservancy engineering according to claim 7, characterized in that: The invention also comprises an auxiliary cutting mechanism, which is used for cutting the lower side of the soil sample, and is arranged at the arc-shaped groove of the arc-shaped connecting plate (4). The auxiliary cutting mechanism comprises two symmetrical cutting ropes (20), which are respectively arranged in the arc-shaped grooves of the arc-shaped connecting plate (4) with equal circumferential spacing, and the two ends of the cutting ropes (20) respectively penetrate the symmetrical arc-shaped connecting plate (4). A sliding block (21) is slidably connected in the sliding tube (10), and the two ends of the cutting rope (20) are respectively fixedly connected to adjacent sliding blocks (21). A symmetrical tensioning rope (22) is slidably connected between the sliding tube (10) and the fixed rod (1), and one end of the tensioning rope (22) is fixedly connected to the adjacent sliding block (21). A winding assembly is arranged at the top end of the fixed rod (1), and the winding assembly is used for tightening the two cutting ropes (20).

9. The earthwork compaction detection device for water conservancy engineering according to claim 8, characterized in that: The cutting rope (20) is configured as a flexible steel wire and is used to cut the lower side of the soil sample.

10. The earthwork compaction detection device for water conservancy engineering according to claim 8, characterized in that: The winding assembly includes a fixed seat (23), the fixed seat (23) is fixedly connected to the top end of the fixed rod (1), the fixed seat (23) is rotatably connected to a winding roller (24), the winding roller (24) is fixedly connected to the symmetrical tensioning rope (22), both ends of the winding roller (24) are equipped with one-way wheels (25), the outer rings of the symmetrical one-way wheels (25) are commonly fixedly connected to a rotating handle (26), the rotating handle (26) is provided with an arc groove, and the arc groove of the rotating handle (26) is limitedly matched with the fixed rod (1).

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