A device for detecting density of rammed earth in civil engineering

Abstract

The present invention relates to the technical field of civil engineering equipment, specifically to a civil engineering rammed earth density detection device, including a flange, a steel pipe, a driving rod, a turntable, a ring drill bit and a cross fixing plate, a gear on the driving rod, a first gear ring and a bevel gear ring on the turntable, a second gear ring on the inner side of the ring drill bit, a servo motor on the cross fixing plate, a plate-type weighing sensor at the output end of the hydraulic cylinder, and a soil sampling box on the bottom side of the plate-type weighing sensor. The servo motor of the present invention drives the turntable to rotate through the bevel gear and the bevel gear ring, and the turntable drives a plurality of driving rods to rotate synchronously through the first gear on the bottom side. The driving rod can rotate the ring drill bit driven by the gear whose lower end is meshed with the second gear ring, and the soil on the rammed earth surrounding the sampled soil is removed, and then the soil sampling box is driven by the hydraulic cylinder to slide downward to sample the soil, which replaces the manual soil sampling method and improves the detection efficiency. Moreover, the squeezed rammed earth can overflow from between the two steel pipes, reducing the pressure of the surrounding soil on the soil sampling box.

Description

Technical Field

[0001] The invention relates to the technical field of civil engineering equipment, and in particular to a device for detecting density of rammed earth in civil engineering. Background Art

[0002] The purpose of rammed earth density testing is to evaluate the compactness of rammed earth, that is, the mass or weight of rammed earth per unit volume, and the tightness between rammed earth particles. This is crucial to ensure the bearing capacity, stability and durability of rammed earth projects. Therefore, rammed earth density testing is an indispensable quality control link in rammed earth projects. By selecting appropriate testing methods and following standardized testing procedures, the compactness and stability of rammed earth can be accurately evaluated, providing strong guarantees for the construction quality of rammed earth projects.

[0003] In the prior art, workers usually use a ring knife to take out a certain volume of sample from the rammed earth, and calculate the density of the rammed earth by measuring the mass and volume of the sample. This method is relatively complicated to operate. In actual operation, the ring knife needs to be knocked to make it inserted into the soil. If it hits a stone, the ring knife will easily deform. In addition, the wall thickness of the ring knife itself will squeeze the surrounding soil, which may make the sampled soil density slightly greater than the actual density, thereby affecting the detection accuracy of the rammed earth density.

[0004] Therefore, it is urgent to improve the civil engineering rammed earth density detection device to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide a device for detecting the density of rammed earth in civil engineering. The servo motor drives the turntable to rotate through bevel gears and bevel gear rings. The turntable drives a plurality of driving rods to rotate synchronously through the first gear on the bottom side. The driving rods can rotate through a gear-driven ring drill bit whose lower end is meshed with the second gear ring, so as to remove the soil on the surrounding surface of the rammed earth to be sampled, and then drive the soil box to slide downward through the hydraulic cylinder to take the soil, thereby replacing the manual soil taking method and improving the detection efficiency. Moreover, the squeezed rammed earth can overflow from between two steel pipes, reducing the pressure of the surrounding soil on the soil taking box.

[0006] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0007] A device for detecting density of rammed earth in civil engineering, comprising two flanges distributed up and down, a plurality of uniformly distributed steel pipes are fixedly installed between the two flanges, a driving rod is rotatably arranged inside the steel pipe, the driving rod extends to both sides of the steel pipe, two gears distributed up and down are fixedly installed on the driving rod, and the gears are rotatably arranged inside the flanges;

[0008] A turntable is rotatably provided on the flange at the upper end, a first gear ring is fixedly provided on the bottom side of the turntable, the first gear ring is meshed with the gear at the upper end of the driving rod, a ring drill is rotatably connected to the flange at the lower end, a second gear ring is fixedly installed on the inner side of the ring drill, the second gear ring is meshed with the gear at the lower end of the driving rod, a cross fixing plate is fixedly installed inside the flange at the upper end by bolts, two symmetrically distributed servo motors are fixedly installed on the cross fixing plate, a bevel gear is fixedly connected to the output end of the servo motor, a bevel gear ring is fixedly provided on the upper side of the turntable, the bevel gear is meshed with the bevel gear ring;

[0009] A hydraulic cylinder is fixedly mounted on the cross fixing plate, an output end of the hydraulic cylinder passes through the cross fixing plate and extends to the bottom of the flange, a plate type weighing sensor is fixedly mounted on the output end of the hydraulic cylinder, and a soil sampling box is fixedly mounted on the bottom side of the plate type weighing sensor.

[0010] Preferably, a wedge-shaped ring cutter is fixedly mounted on the bottom end of the soil-taking box, and two symmetrically distributed trimming devices are fixedly mounted on the wedge-shaped ring cutter, and the trimming devices are distributed on both sides of the soil-taking box.

[0011] Preferably, the trimming device includes a dustproof box and a cutting motor fixedly installed inside the dustproof box, the output end of the cutting motor is fixedly connected to a screw, the rotation of the screw is arranged inside the dustproof box, a slider is slidably arranged on the screw, a steel wire is fixedly arranged between the two sliders, and the steel wire is slidably arranged inside the slider.

[0012] Preferably, a box cover is fixedly mounted on the upper end of the dustproof box, and a clamping plate is fixedly mounted inside the dustproof box and on the box cover, and the clamping plate corresponds to the screw rod.

[0013] Preferably, two symmetrically distributed mechanical arms are fixedly mounted on the cross fixing plate, the upper ends of the mechanical arms are fixedly mounted on the external sampling vehicle by bolts, and the mechanical arms are distributed on both sides of the hydraulic cylinder.

[0014] Preferably, two springs are fixedly connected between the soil taking box and the cross fixing plate, a guide column is slidably arranged inside the spring, the guide column extends into the interior of the soil taking box, a push plate is fixedly installed at the bottom end of the guide column, and the push plate is slidably arranged inside the soil taking box through the guide column.

[0015] Preferably, an air hole is opened inside the guide column, and a blocking block is fixedly installed on the cross fixing plate at a position corresponding to the spring, and the blocking block corresponds to the air hole.

[0016] Preferably, two symmetrically distributed electrode blocks are fixedly installed on the upper end of the push plate, and the electrode blocks are distributed between the two guide pillars. The two electrode blocks are electrically connected to the positive and negative poles of the power supply of the cutting motor through wires, and a copper sheet is fixedly installed on the inner top side surface of the soil sampling box, and the two ends of the copper sheet correspond to the two electrode blocks respectively.

[0017] Preferably, four C-shaped mounting blocks are fixedly installed around the cross fixing plate, and the C-shaped mounting blocks are fixedly installed on the inner side of the flange by bolts, and the C-shaped mounting blocks are not in contact with the turntable, and a Z-shaped mounting plate is fixedly installed on the cross fixing plate corresponding to the position of the servo motor, and one end of the Z-shaped mounting plate is fixedly installed on the C-shaped mounting block by bolts.

[0018] Preferably, an iron ring is fixedly installed inside the flange at the lower end by bolts, and the bottom end of the iron ring is rotatably connected to the inner side of the ring drill bit.

[0019] The present invention has at least the following beneficial effects:

[0020] 1. The servo motor of the present invention drives the turntable to rotate through the bevel gear and the bevel gear ring. The turntable drives a plurality of driving rods to rotate synchronously through the first gear on the bottom side. The driving rod can rotate through the gear-driven ring drill bit whose lower end is meshed with the second gear ring to remove the soil around the rammed earth to be sampled, and then the soil taking box is driven by the hydraulic cylinder to slide downward to take the soil, which replaces the manual soil taking method and improves the detection efficiency. In addition, the squeezed rammed earth can overflow from between the two steel pipes, reducing the pressure of the surrounding soil on the soil taking box.

[0021] In the process of drilling the soil by the servo motor driven ring drill bit of the present invention 2, the soil on the outside of the steel pipe is scraped out to form a gap around the steel pipe. The inclined surface of the wedge-shaped ring cutter can squeeze out the surrounding rammed earth from the gap between the two steel pipes to prevent it from generating squeezing pressure on the soil box and the wedge-shaped ring cutter. The trimming device can cut off the excess rammed earth, thereby greatly improving the accuracy of rammed earth density detection.

[0022] 3. The cutting motor of the present invention is used to drive the screw to rotate. The synchronous rotation of the screws on both sides of the soil box can drive the two sliders to slide synchronously on both sides of the soil box, so that the steel wire on the slider slides horizontally in the soil box to cut the bottom of the rammed earth, which changes the way of manual transmission trimming, not only reduces the workload of the inspection personnel, but also greatly shortens the inspection time, thereby improving the inspection efficiency of the rammed earth density.

[0023] 4. The cross fixing plate facilitates the connection between the rammed earth density detection device and the sampling vehicle. At the same time, the symmetrically distributed mechanical arm drive rods are conducive to the uniform transmission of driving force. At the same time, the iron ring and dustproof box can prevent mud and dust from entering the device, thereby greatly extending the service life of the rammed earth density detection device.

[0024] 5. When the soil box is driven by the hydraulic cylinder to slide downward, the wedge-shaped ring knife first contacts the rammed soil for cutting. At this time, the sample rammed soil gradually enters the soil box and contacts the push plate. The air inside the soil box is discharged through the air holes. After the soil box is filled, the trimming device trims the rammed soil. At this time, the top of the guide column contacts the blocking block, and the air hole is blocked by the blocking block. No air enters the inside of the soil box. The mechanical arm is started to lift the detection device. The rammed soil sample is cut by the steel wire and separated from the bottom. The rammed soil sample can be weighed by the plate weighing sensor to quickly obtain the density of the rammed soil.

[0025] 6. After the soil box of the present invention is filled, the push plate rises to the top of the soil box. At this time, the electrode block on the upper end of the push plate contacts the copper sheet, and a power circuit of the cutting motor is formed. At this time, the steel wire slides through the screw drive, which can improve efficiency on the one hand and simplify control logic on the other hand, reducing the design cost of the control system. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0027] Figure 1 The overall elevation diagram provided by the present invention;

[0028] Figure 2 A cross-sectional elevation view provided for the present invention;

[0029] Figure 3 The present invention provides Figure 2 The enlarged schematic diagram at A in the middle;

[0030] Figure 4 The present invention provides Figure 2 The enlarged schematic diagram of point B in the middle;

[0031] Figure 5 Explosion diagram provided by the present invention Figure 1 ;

[0032] Figure 6 Explosion diagram provided by the present invention Figure 2 ;

[0033] Figure 7 A cross-sectional elevation view of a soil borrowing box provided by the present invention;

[0034] Figure 8 The present invention provides Figure 7 Front view schematic diagram;

[0035] Fig. 9An exploded schematic diagram of a trimming device provided by the present invention;

[0036] Fig.10 This is a schematic diagram of the cutting motor circuit provided by the present invention.

[0037] In the figure, 1. flange; 2. steel pipe; 3. driving rod; 4. gear; 5. turntable; 51. first gear ring; 52. bevel gear ring; 6. ring drill; 61. second gear ring; 7. cross fixing plate; 71. C-type mounting block; 72. Z-type fixing plate; 8. servo motor; 9. bevel gear; 10. hydraulic cylinder; 11. plate weighing sensor; 12. soil taking box; 13. wedge-shaped ring cutter; 14. dressing device; 141. dustproof box; 142. cutting motor; 143. screw; 144. slider; 145. steel wire; 146. box cover; 147. clamping plate; 15. mechanical arm; 16. spring; 17. guide column; 18. push plate; 19. air hole; 20. blocking block; 21. electrode block; 22. copper sheet; 23. iron ring. DETAILED DESCRIPTION

[0038] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0039] like Figure 1-Figure 10 As shown, the civil engineering rammed earth density detection device provided in this embodiment includes two flanges 1 distributed up and down, a plurality of uniformly distributed steel pipes 2 are fixedly installed between the two flanges 1, a driving rod 3 is rotatably arranged inside the steel pipe 2, the driving rod 3 extends to both sides of the steel pipe 2, two gears 4 distributed up and down are fixedly installed on the driving rod 3, the gear 4 is rotatably arranged inside the flange 1, and the plurality of driving rods 3 synchronously drive the ring drill 6 to rotate, so that the driving force of the ring drill 6 can be more uniform;

[0040] A turntable 5 is rotatably provided on the flange 1 at the upper end, a first gear ring 51 is fixedly provided on the bottom side of the turntable 5, the first gear ring 51 meshes with the gear 4 at the upper end of the driving rod 3, a ring drill bit 6 is rotatably connected to the flange 1 at the lower end, a second gear ring 61 is fixedly installed on the inner side of the ring drill bit 6, the second gear ring 61 meshes with the gear 4 at the lower end of the driving rod 3, a cross fixing plate 7 is fixedly installed inside the upper end flange 1 by bolts, two symmetrically distributed servo motors 8 are fixedly installed on the cross fixing plate 7, a bevel gear 9 is fixedly connected to the output end of the servo motor 8, a bevel gear ring 52 is fixedly provided on the upper side of the turntable 5, the bevel gear 9 meshes with the bevel gear ring 52, the servo motor 8 is used to drive the turntable 5 to rotate through the bevel gear 9 and the bevel gear ring 52, the turntable 5 drives a plurality of driving rods 3 to rotate synchronously through the first gear ring 51 on the bottom side;

[0041] A hydraulic cylinder 10 is fixedly installed on the cross fixing plate 7. The output end of the hydraulic cylinder 10 penetrates the cross fixing plate 7 and extends to the bottom of the flange 1. A plate type weighing sensor 11 is fixedly installed on the output end of the hydraulic cylinder 10. A soil taking box 12 is fixedly installed on the bottom side of the plate type weighing sensor 11. The hydraulic cylinder 10 is used to drive the soil taking box 12 to slide downward to take soil. The plate type weighing sensor 11 can weigh the taken soil and simply calculate the density of the rammed soil.

[0042] Among them, the servo motor 8 drives the turntable 5 to rotate through the bevel gear 9 and the bevel gear ring 52, and the turntable 5 drives several driving rods 3 to rotate synchronously through the first gear ring 51 on the bottom side. The driving rod 3 can drive the ring drill 6 to rotate through the gear 4 meshing with the second gear ring 61 at the lower end, so as to remove the soil around the rammed earth to be sampled, and then drive the soil box 12 to slide downward to take the soil through the hydraulic cylinder 10, which replaces the manual soil taking method and improves the detection efficiency. The squeezed rammed earth can overflow from between the two steel pipes 2, reducing the pressure of the surrounding soil on the soil box 12. The plate weighing sensor 11 can weigh the taken soil, so as to simply calculate the density of the rammed earth.

[0043] Further, such as Figure 1-Figure 8 As shown, a wedge-shaped ring cutter 13 is fixedly installed at the bottom end of the soil sampling box 12, and two symmetrically distributed trimming devices 14 are fixedly arranged on the wedge-shaped ring cutter 13. The trimming devices 14 are distributed on both sides of the soil sampling box 12. The wedge-shaped ring cutter 13 is used to cut the rammed earth in the center of a number of steel pipes 2 to make it fit the cross-sectional area of ​​the soil sampling box 12. During the process of drilling the soil with the ring drill bit 6 driven by the servo motor 8, the soil on the outside of the steel pipe 2 is scraped out to form a gap around the steel pipe 2. The inclined surface of the wedge-shaped ring cutter 13 can squeeze out the surrounding rammed earth from the gap between the two steel pipes 2 to prevent it from generating an extrusion pressure on the soil sampling box 12 and the wedge-shaped ring cutter 13. The trimming device 14 can cut off the excess rammed earth, thereby greatly improving the accuracy of rammed earth density detection.

[0044] To solve the problem of rammed earth finishing:

[0045] like Figure 7 , Figure 8 and Fig. 9As shown, the trimming device 14 includes a dustproof box 141 and a cutting motor 142 fixedly installed inside the dustproof box 141, the output end of the cutting motor 142 is fixedly connected to a screw 143, the rotation of the screw 143 is arranged inside the dustproof box 141, the cutting motor 142 is used to drive the screw 143 to rotate, a slider 144 is slidably arranged on the screw 143, a steel wire 145 is fixedly arranged between the two sliders 144, the steel wire 145 is slidably arranged inside the slider 144, a box cover 146 is fixedly installed on the upper end of the dustproof box 141, a card plate 147 is fixedly installed inside the dustproof box 141 and on the box cover 146, the card plate 147 corresponds to the screw 143, and the box cover 146 and the dustproof box 141 are used to prevent wet soil from entering and causing a short circuit;

[0046] The cutting motor 142 is used to drive the screw rod 143 to rotate. The screw rods 143 on both sides of the soil box 12 rotate synchronously to drive the two sliders 144 to slide synchronously on both sides of the soil box 12, so that the steel wire 145 on the slider 144 slides horizontally in the soil box 12 to cut the bottom of the rammed earth, which changes the transmission manual trimming method, not only reduces the workload of the inspection personnel, but also greatly shortens the inspection time, thereby improving the inspection efficiency of the rammed earth density;

[0047] Specifically, a shallow groove can be opened inside the soil box 12 at the position corresponding to the steel wire 145 to prevent the steel wire 145 from contacting the rammed earth during the soil removal process of the hydraulic cylinder 10. The steel wire 145 should be as tight as possible during installation to prevent bending during the cutting process. If hard objects such as stones are encountered, multiple sampling methods should be used to eliminate test results with large differences.

[0048] Furthermore, if Figure 1-Figure 6 As shown, two symmetrically distributed mechanical arms 15 are fixedly installed on the cross fixing plate 7, and the upper ends of the mechanical arms 15 are fixedly installed on the external sampling vehicle by bolts. The mechanical arms 15 are distributed on both sides of the hydraulic cylinder 10, and an iron ring 23 is fixedly installed inside the flange plate 1 at the lower end by bolts. The bottom end of the iron ring 23 is rotatably connected to the inner side of the ring drill bit 6. The cross fixing plate 7 facilitates the connection between the rammed earth density detection device and the sampling vehicle. At the same time, the symmetrically distributed mechanical arms 15 drive rods 3 are beneficial to the uniform transmission of the driving force. At the same time, the iron ring 23 and the dustproof box 141 can prevent soil and dust from entering the interior of the device, thereby greatly extending the service life of the rammed earth density detection device.

[0049] Furthermore, if Figure 7 , Figure 8 and Fig. 9As shown, two springs 16 are fixedly connected between the soil box 12 and the cross fixing plate 7. The spring 16 is used to reduce the shock of the guide column. A guide column 17 is slidably arranged inside the spring 16. The guide column 17 extends into the soil box 12. A push plate 18 is fixedly installed at the bottom end of the guide column 17. The push plate 18 is slidably arranged inside the soil box 12 through the guide column 17. An air hole 19 is opened inside the guide column 17. A blocking block 20 is fixedly installed at the position of the cross fixing plate 7 corresponding to the spring 16. The blocking block 20 corresponds to the air hole 19.

[0050] In the process of the hydraulic cylinder 10 driving the soil box 12 to slide downward, the wedge-shaped ring knife 13 first contacts the rammed earth to cut, and at this time the sample rammed earth gradually enters the soil box 12 and contacts the push plate 18, and the air inside the soil box 12 is discharged through the air hole 19. After the soil box 12 is filled, the trimming device 14 trims the rammed earth. At this time, the top of the guide column 17 contacts the blocking block 20, and the air hole 19 is blocked by the blocking block 20. No air enters the inside of the soil box 12, and the mechanical arm 15 is started to lift the detection device. The rammed earth sample is cut by the steel wire 145 and separated at the bottom. The rammed earth sample can be weighed by the plate-type weighing sensor 11, so as to quickly obtain the density of the rammed earth.

[0051] Specifically, the calculation formula for soil density is usually expressed as:

[0052]

[0053] ρ is the soil density, is the total weight of the soil box 12 and the rammed earth sample, is the weight of the soil box 12, is the volume from the steel wire 145 to the top side of the soil box 12, is the volume of the push plate 18.

[0054] In order to solve the problem of dressing of the dressing device 14:

[0055] like Figure 7 , Figure 8 and Fig. 9 As shown, two symmetrically distributed electrode blocks 21 are fixedly installed on the upper end of the push plate 18, and the electrode blocks 21 are distributed between the two guide pillars 17. The two electrode blocks 21 are electrically connected to the positive and negative poles of the power supply of the cutting motor 142 through wires, and a copper sheet 22 is fixedly installed on the inner top side of the soil box 12, and the two ends of the copper sheet 22 correspond to the two electrode blocks 21 respectively;

[0056] Among them, after the soil box 12 is filled, the pushing plate 18 rises to the top of the soil box 12. At this time, the electrode block 21 at the upper end of the pushing plate 18 contacts the copper sheet 22, and the power circuit of the cutting motor 142 forms a path. At this time, the steel wire is driven to slide through the screw 143, which can improve efficiency on the one hand and simplify control logic and reduce control system design costs on the other hand.

[0057] In addition, if Figure 1-Figure 10 As shown, four C-shaped mounting blocks 71 are fixedly installed around the cross fixing plate 7, and the C-shaped mounting blocks 71 are fixedly installed on the inner side of the flange 1 by bolts, and the C-shaped mounting blocks 71 do not contact the turntable 5. A Z-shaped mounting plate 72 is fixedly installed on the position of the cross fixing plate 7 corresponding to the servo motor 8, and one end of the Z-shaped mounting plate 72 is fixedly installed on the C-shaped mounting block 71 by bolts, which can improve the stability of the rammed earth density detection device. After the detection is completed, the hydraulic cylinder 10 is started to drive the soil box 12 to rise and the guide column 17 is against the bottom side of the cross fixing plate 7, so that the pushing plate 18 is pushed down to push the rammed earth sample out, and the operation is simple and convenient.

[0058] like Figure 1-Figure 10 As shown, the principle of the civil engineering rammed earth density detection device provided in this embodiment is as follows:

[0059] When in use, the mechanical arm 15 is started to make the bottom side of the ring drill 6 contact with the rammed earth surface, the servo motor 8 drives the turntable 5 to rotate through the bevel gear 9 and the bevel gear ring 52, the turntable 5 drives several driving rods 3 to rotate synchronously through the first gear ring 51 on the bottom side, the driving rod 3 can drive the ring drill 6 to rotate through the gear 4 meshing with the second gear ring 61 at the lower end, and the soil around the rammed earth surface to be sampled is removed. When taking soil, the soil taking box 12 is driven by the hydraulic cylinder 10 to slide downward, the wedge-shaped ring knife 13 first contacts with the rammed earth for cutting, at this time the sample rammed earth gradually enters the soil taking box 12 and contacts with the push plate 18, and the air inside the soil taking box 12 passes through the air The air hole 19 is discharged, and after the soil box 12 is filled, the trimming device 14 trims the rammed earth. At this time, the top of the guide column 17 contacts the blocking block 20, and the air hole 19 is blocked by the blocking block 20. No air enters the inside of the soil box 12, and the mechanical arm 15 is started to lift the detection device. The rammed earth sample is cut by the steel wire 145 and separated from the bottom. The rammed earth sample can be weighed by the plate weighing sensor 11, so as to quickly obtain the density of the rammed earth. After the detection is completed, the hydraulic cylinder 10 is started to drive the soil box 12 to rise. The guide column 17 is against the bottom side of the cross fixing plate 7, so that the pushing plate 18 is pushed down to push the rammed earth sample out. The operation is simple and convenient.

[0060] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0061] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0062] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and variations made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A device for detecting density of rammed earth for civil engineering, comprising two flanges (1) arranged vertically and horizontally, characterized in that: A plurality of uniformly distributed steel pipes (2) are fixedly mounted between the two flanges (1), a driving rod (3) is rotatably mounted inside the steel pipe (2), the driving rod (3) extends to both sides of the steel pipe (2), two gears (4) distributed up and down are fixedly mounted on the driving rod (3), and the gears (4) are rotatably mounted inside the flange (1); A rotating disk (5) is rotatably mounted on the flange (1) at the upper end, a first gear ring (51) is fixedly mounted on the bottom side of the rotating disk (5), and the first gear ring (51) meshes with the gear (4) at the upper end of the driving rod (3); a ring drill (6) is rotatably connected to the flange (1) at the lower end, a second gear ring (61) is fixedly mounted on the inner side of the ring drill (6), and the second gear ring (61) meshes with the gear (4) at the lower end of the driving rod (3); a cross fixing plate (7) is fixedly mounted inside the flange (1) at the upper end by bolts, and two symmetrically distributed servo motors (8) are fixedly mounted on the cross fixing plate (7), and an output end of the servo motor (8) is fixedly connected to a bevel gear (9); a bevel gear ring (52) is fixedly mounted on the upper side of the rotating disk (5), and the bevel gear (9) meshes with the bevel gear ring (52); A hydraulic cylinder (10) is fixedly mounted on the cross fixing plate (7), an output end of the hydraulic cylinder (10) passes through the cross fixing plate (7) and extends below the flange (1), a plate type weighing sensor (11) is fixedly mounted on the output end of the hydraulic cylinder (10), and a soil sampling box (12) is fixedly mounted on the bottom side of the plate type weighing sensor (11); A wedge-shaped ring cutter (13) is fixedly mounted on the bottom end of the soil taking box (12), and two symmetrically distributed trimming devices (14) are fixedly mounted on the wedge-shaped ring cutter (13), and the trimming devices (14) are distributed on both sides of the soil taking box (12); The trimming device (14) comprises a dustproof box (141) and a cutting motor (142) fixedly mounted inside the dustproof box (141); the output end of the cutting motor (142) is fixedly connected to a screw rod (143); the screw rod (143) is rotatably mounted inside the dustproof box (141); a slider (144) is slidably mounted on the screw rod (143); a steel wire (145) is fixedly mounted between two sliders (144); the steel wire (145) is slidably mounted inside the slider (144); a box cover (146) is fixedly mounted on the upper end of the dustproof box (141); a card plate (147) is fixedly mounted inside the dustproof box (141) and on the box cover (146); the card plate (147) corresponds to the screw rod (143).

2. The device for detecting density of rammed earth for civil construction according to claim 1, characterized in that: Two symmetrically distributed mechanical arms (15) are fixedly mounted on the cross fixing plate (7), and the upper ends of the mechanical arms (15) are fixedly mounted on the external sampling vehicle by means of bolts. The mechanical arms (15) are distributed on both sides of the hydraulic cylinder (10).

3. The device for detecting density of rammed earth for civil construction according to claim 1, characterized in that: Two springs (16) are fixedly connected between the soil taking box (12) and the cross fixing plate (7); a guide column (17) is slidably arranged inside the spring (16); the guide column (17) extends into the interior of the soil taking box (12); a push plate (18) is fixedly installed at the bottom end of the guide column (17); the push plate (18) is slidably arranged inside the soil taking box (12) via the guide column (17).

4. The device for detecting density of rammed earth for civil construction according to claim 3, characterized in that: An air hole (19) is provided inside the guide column (17), and a blocking block (20) is fixedly mounted on the cross fixing plate (7) at a position corresponding to the spring (16), and the blocking block (20) corresponds to the air hole (19).

5. The device for detecting density of rammed earth for civil construction according to claim 3, characterized in that: Two symmetrically distributed electrode blocks (21) are fixedly mounted on the upper end of the push plate (18), the electrode blocks (21) are distributed between the two guide pillars (17), the two electrode blocks (21) are electrically connected to the positive and negative poles of the power supply of the cutting motor (142) through wires, and a copper sheet (22) is fixedly mounted on the inner top side surface of the soil sampling box (12), the two ends of the copper sheet (22) respectively corresponding to the two electrode blocks (21).

6. The device for detecting density of rammed earth for civil construction according to claim 1, characterized in that: Four C-shaped mounting blocks (71) are fixedly mounted around the cross fixing plate (7), the C-shaped mounting blocks (71) are fixedly mounted on the inner side of the flange (1) by means of bolts, and the C-shaped mounting blocks (71) are not in contact with the turntable (5), and a Z-shaped mounting plate (72) is fixedly mounted on the cross fixing plate (7) at a position corresponding to the servo motor (8), and one end of the Z-shaped mounting plate (72) is fixedly mounted on the C-shaped mounting block (71) by means of bolts.

7. The device for detecting density of rammed earth for civil construction according to claim 1, characterized in that: An iron ring (23) is fixedly mounted inside the flange (1) at the lower end by bolts, and the bottom end of the iron ring (23) is rotatably connected to the inner side of the ring drill bit (6).

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