A device for detecting the moisture content of subgrade soil

Abstract

The application discloses a kind of detection devices for roadbed soil moisture content, it is related to roadbed soil moisture content detection technical field, including detection equipment and detection mechanism, the detection mechanism includes probe rod, driving structure, small lead screw head, connecting piece, anti-disturbance isolation sheath, axial convex strip and axial sewage tank;The application is used by probe rod, small lead screw head, connecting piece and driving structure cooperation, probe rod is rotated into the position to be detected, anti-disturbance isolation sheath and axial convex strip make probe rod be completely isolated with the hole wall soil in the process of rotation, avoid soil body to be driven, disturbed or compacted, cooperate with the sewage of axial sewage tank and the low-speed drive of worm and worm structure, will not destroy soil body original structure, realize undisturbed high-precision moisture content detection, improve the sewage effect of axial sewage tank by cooperation of inclined cutting block, spiral conveying rod, synchronous belt structure and first transmission structure, reduce the frequency of axial sewage tank blockage.

Description

Technical Field

[0001] This invention belongs to the field of soil moisture content detection technology, specifically a device for detecting the moisture content of roadbed soil. Background Technology

[0002] The roadbed is an important component of the road structure, forming a complete transportation route together with bridges and tunnels. The roadbed soil is the key carrier in the earthwork of roadbed construction, supporting the pavement structure and transferring loads to the foundation. The compaction quality of the roadbed is the basis of its bearing capacity. The effect of moisture content on compaction effect follows a parabolic relationship. Only when the moisture content is close to the optimum moisture content can the friction and cohesion between soil particles reach equilibrium, thus achieving the maximum dry density. Furthermore, the stability of the roadbed depends on the shear strength of the soil, and moisture content is a key factor affecting shear strength. Therefore, it is necessary to test the moisture content of the roadbed soil during road construction. Thus, a device for testing the moisture content of roadbed soil is needed.

[0003] Existing devices for detecting the moisture content of subgrade soil employ probe rods for real-time and convenient detection. During this process, the probe rod needs to be inserted into the subgrade soil. Sometimes, when deeper areas need to be tested, tools are used to hammer or tampe the probe rod into the soil, or a hole is drilled for soil sampling. However, hammering or tamping the probe rod into the subgrade soil compresses the surrounding soil, increasing localized compaction and decreasing porosity, altering the original moisture distribution and dielectric properties. This results in measured values ​​that are lower than the true values, with the effects being more pronounced in saturated soil. Drilling for soil sampling damages the original soil structure, making it difficult to restore the original density and porosity during backfilling. The backfilled area differs significantly from the original subgrade structure, creating false measurement zones and reducing the effectiveness of the detection device, thus failing to meet user needs. Summary of the Invention

[0004] The present invention aims to solve the technical problems existing in the prior art; to this end, the present invention proposes a device for detecting the moisture content of roadbed soil.

[0005] A device for detecting the moisture content of roadbed soil includes: a detection device and a detection mechanism connected to the detection device. The detection mechanism includes a probe rod connected to the detection device and a drive structure for controlling the rotation of the probe rod. The detection mechanism also includes a small-lead spiral head disposed at the bottom of the probe rod and a connector disposed at the upper part of the probe rod and connected to the drive structure. An anti-disturbance isolation sleeve is movably fitted on the outer side of the probe rod. An electrode area is provided on the probe rod, and the electrode area detects the moisture content of the roadbed soil through the anti-disturbance isolation sleeve. The probe rod has a hollow design, allowing the electrode wire to run inside the rod and be completely internal. The outer side of the anti-disturbance isolation sleeve has axial protrusions arranged in a circular array. Several of the axial protrusions work together to prevent friction from driving the probe rod during rotation. The anti-disturbance isolation sleeve rotates with the body, structurally ensuring that the anti-disturbance isolation sleeve remains stationary. The outer wall of the anti-disturbance isolation sleeve is treated with an ultra-smooth and wear-resistant finish. The upper end of the anti-disturbance isolation sleeve has several micro-vent holes arranged in a circular array to avoid air blockage and difficulty in screwing in. The outer side of the anti-disturbance isolation sleeve has several axial drainage grooves arranged in a circular array. The axial drainage grooves can be used in conjunction with the small-lead screw head to allow the soil and slurry generated during the screwing of the probe rod into the roadbed soil to be smoothly discharged along the drainage grooves, avoiding blockage of the electrode area or increased screwing resistance. The lower end of the anti-disturbance isolation sleeve is close to and fits against the rear end of the small-lead screw head, and is movably sealed with the probe rod. The upper end of the anti-disturbance isolation sleeve extends to the bottom of the drive structure housing and is fixedly sealed.

[0006] As a further aspect of the present invention: the inner upper and lower ends of the anti-disturbance isolation sleeve are provided with low-friction guide rings that fit the probe rod, making the probe rod more stable during rotation. The lower end of the axial sewage discharge trough is provided with a guide flared structure, which allows the small-lead spiral head to smoothly enter the axial sewage discharge trough, avoiding blockage and accumulation. The interior of the axial sewage discharge trough is polished and rounded, making the mud discharge smoother and reducing soil disturbance.

[0007] As a further embodiment of the present invention: the driving structure includes a driving housing, a worm gear structure disposed inside the driving housing and connected to the probe rod, and a driving motor disposed outside the driving housing. The probe rod is connected to the worm gear structure through a connector, and the upper end of the probe rod passes through the driving housing. Anti-slip handles are symmetrically provided on the outer side of the driving housing. An external support frame can also be connected to the driving housing to facilitate the stable placement of the driving structure on the roadbed. A rotation counting ring can be installed on the output shaft of the driving motor to accurately calculate the depth based on the lead of the spiral head, thereby achieving constant depth detection.

[0008] As a further aspect of the present invention: the detection mechanism further includes a sewage discharge component for assisting the axial sewage discharge trough in sewage discharge. The sewage discharge component includes several inclined cutting blocks aligned at the guide flared structure of the axial sewage discharge trough. The several inclined cutting blocks are arranged in a cooperative manner to prevent large stones from entering the axial sewage discharge trough. The sewage discharge component also includes a spiral conveying rod aligned with the axial sewage discharge trough and a support block disposed on the lower inner side of the axial sewage discharge trough and rotatably connected to the bottom end of the spiral conveying rod. The lower side of the support block is V-shaped to facilitate the separation of mud in the axial sewage discharge trough. The sewage discharge component also includes a fixing member disposed at the lower end of the drive housing and a support base connected to the bottom end of the fixing member. The support base has a synchronous belt structure inside for controlling the operation of the spiral conveying rod. The top end of the spiral conveying rod is rotatably disposed on the lower side of the support base. The synchronous belt structure has a first connecting rod coaxially connected to the spiral conveying rod. The synchronous belt structure has a first transmission rod that passes through the fixing member and extends into the drive housing. The sewage discharge component also includes a first transmission structure for drivingly connecting the probe rod and the first transmission rod.

[0009] As a further aspect of the present invention: the first transmission structure includes a first transmission gear ring disposed on the probe rod and a plurality of first transmission gears meshing with the first transmission gear ring. The bottom end of the first transmission gear is coaxially provided with a transmission tube that is inserted into the first transmission rod. When the probe rod rotates, the transmission tube, the first transmission rod and the synchronous belt structure cooperate to control the spiral conveyor rod to perform the conveying work through the first transmission gear ring and the first transmission gears.

[0010] As a further aspect of the present invention: the fixing member includes a first fixing block fixedly disposed on the upper end of the support base and a second fixing block threadedly disposed on the first fixing block, wherein the upper end of the second fixing block is threadedly fixed to the drive housing.

[0011] As a further aspect of the present invention: the detection mechanism further includes a cleaning component disposed on the drive housing and used to clean the upper part of the axial drain groove. The cleaning component includes a protective box detachably disposed at the lower end of the drive housing and aligned with the support seat, and an airbag disposed inside the protective box. The upper inner side of the protective box is provided with a squeezing block for squeezing the airbag. The lower end of the protective box is provided with a rotating seat. A jet pipe communicating with the airbag is rotatably disposed on the rotating seat. The jet pipe is provided with a first one-way valve, which allows the jet pipe to blow air only. One end of the jet pipe can be aligned with the axial drain groove. The outer side of the protective box is provided with an air inlet pipe communicating with the airbag. A second one-way valve is installed on the air inlet pipe, which allows the air inlet pipe to intake air only. When the squeezing block squeezes the airbag, the jet pipe blows air into the axial drain groove, thereby cleaning the axial drain groove.

[0012] As a further aspect of the present invention: the cleaning assembly further includes a moving strip vertically disposed on the upper end of the extrusion block and a drive block for controlling the moving strip to move up and down. The upper end of the moving strip passes through the protective box and extends into the interior of the drive housing, and is provided with a contact block that cooperates with the drive block. The drive block is rotatably disposed inside the drive housing, and the drive block can periodically extrude the contact block, thereby controlling the moving strip to move up and down.

[0013] As a further aspect of the present invention: the cleaning assembly further includes a first bevel gear structure coaxially connected to the first transmission gear and a second connecting rod coaxially connected to the first bevel gear structure. One end of the second connecting rod is coaxially connected to the drive block, so that when the first transmission gear ring controls the first transmission gear to rotate, the first bevel gear structure controls the drive block to work through the second connecting rod, thereby controlling the moving bar to move up and down.

[0014] As a further aspect of the present invention: the cleaning assembly further includes a plurality of guide blocks disposed within the drive housing and movably connected to the moving strip, and a buffer spring disposed on the guide blocks. The moving strip has a guide groove that matches the guide block, and the buffer spring is disposed in the guide groove.

[0015] As a further aspect of the present invention: the cleaning assembly further includes a filter cover movably disposed at one end of the air intake pipe, which can filter the gas entering the air intake pipe and reduce impurities entering the interior of the airbag. The cleaning assembly also includes a filter box disposed inside the protective box and connected to the air intake pipe, and a filter plate rotatably disposed inside the filter box. The filter box is connected to the airbag, so that the filter cover performs preliminary filtration of the gas, and the filter plate performs secondary filtration of the incoming gas, and can guide the filtered gas into the airbag.

[0016] As a further aspect of the present invention: both the protective box and the filter box are cylindrical structures. The cleaning assembly further includes a first cleaning scraper disposed inside the filter box for cleaning the filter plate and an mounting rod for fixing the first cleaning scraper to the filter box. The vertical cross-section of the filter plate is circular and is movably sealed to the filter box. The filter plate is provided with a connecting ring movably connected to the filter box. A second transmission gear ring is provided on the outer side of the connecting ring. The moving bar is provided with a second transmission structure for controlling the rotation of the second transmission gear ring, so that the first cleaning scraper can clean the filter plate.

[0017] As a further aspect of the present invention: the second transmission structure includes a second transmission gear meshing with a second transmission gear ring and a main gear coaxially arranged with the second transmission gear. A first groove matching the main gear is provided on the moving bar. A lifting rack meshing with the main gear is installed in the first groove. A second transmission rod detachably connected to the second transmission gear is provided on the main gear. A first protective box for protecting the second transmission gear is provided at the upper end of the protective box.

[0018] As a further embodiment of the present invention: the cleaning assembly further includes a third transmission rod vertically disposed at the center of the filter plate and a second protective box disposed on the air inlet pipe and rotatably connected to the third transmission rod. The protective box is provided with a bearing for assisting the rotation of the third transmission rod. The interior of the second protective box is provided with a first rotating gear coaxially connected to the third transmission rod. The cleaning assembly further includes a third transmission gear ring disposed in the second protective box and controlling the rotation of the filter cover, and a third transmission gear meshing with the third transmission gear ring. The third transmission gear meshes with the first rotating gear. The filter cover is provided with a rotating ring sealed and connected to the second protective box. The rotating ring is coaxially connected to the third transmission gear ring.

[0019] As a further aspect of the present invention: the cleaning assembly further includes two second cleaning scrapers vertically disposed on the outside of the second protective box, the second cleaning scrapers being in contact with the filter cover, and a third cleaning scraper being disposed between the two second cleaning scrapers for cleaning the end face of the second protective box.

[0020] As a further aspect of the present invention: the detection mechanism further includes a collection component disposed at the lower end of the protective box. The collection component includes a fixed base symmetrically disposed at the lower end of the protective box and a collection box detachably connected to the fixed base. The collection box is provided with a fixing strip that is inserted into the fixed base. Both the protective box and the filter box are provided with a discharge port that matches the first cleaning scraper. The upper end of the collection box is provided with a feed port that is aligned with the discharge port, so that the first cleaning scraper can guide the cleaned impurities into the collection box.

[0021] As a further embodiment of the present invention: the collecting assembly further includes a second groove formed on the upper end of the fixing bar, a main rack disposed in the second groove, and a second rotating gear rotatably disposed inside the fixing seat and capable of meshing with the main rack. The collecting assembly further includes a sealing block for sealing the discharge port and a first moving gear that is connected to the second rotating gear and controls the horizontal movement of the sealing block. The lower end of the sealing block is provided with a first moving groove that matches the first moving gear. The first moving groove is provided with a first moving rack that meshes with the first moving gear. The first moving gear is provided with a second bevel gear structure that is coaxially connected with the second rotating gear. One end of the sealing block is inserted into the protective box.

[0022] As a further aspect of the present invention: the collection assembly further includes a second moving gear coaxially connected to the first moving gear via a connecting rod and a moving block that is drivenly connected to the second moving gear. The moving block has a second moving groove, and a second moving rack that meshes with the second moving gear is provided in the second moving groove. The bottom end of the moving block extends out of the fixed seat and is provided with a weight block, so that after the collection box is disassembled, the sealing block controls the sealing of the discharge port through the weight block and the moving block.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] (1) The present invention uses a detection device and detection mechanism, with the probe rod, small lead spiral head, connector and drive structure working together to screw the probe rod into the position to be detected. The anti-disturbance isolation sleeve and axial protrusion can completely isolate the probe rod from the soil in the hole wall during the screwing process, avoiding the soil from being driven, disturbed or compacted. With the sewage discharge of the axial sewage discharge trough and the low-speed drive of the worm gear structure, the original structure of the soil will not be damaged, and the water content detection can be achieved without disturbance, without compression and with high precision. The inclined cutting block, spiral conveying rod, support block, fixing part, support seat, synchronous belt structure, first transmission rod, first transmission structure and transmission pipe can improve the sewage discharge effect of the axial sewage discharge trough, reduce the number of times the axial sewage discharge trough is blocked, and improve the accuracy and use effect of the detection device.

[0025] (2) The present invention uses a cleaning assembly, a protective box, an airbag, a jet pipe, a rotating seat, a first one-way valve, an air inlet pipe, a second one-way valve, and a squeezing block to clean the upper part of the axial sewage discharge tank, preventing soil from moving upward to the drive structure. The squeezing block moves up and down through the moving bar, drive block, contact block, and first bevel gear structure. The gas entering the airbag is filtered through the filter cover, filter box, and filter plate, extending the service life of the airbag. The filter plate is rotated for cleaning when the moving bar moves through the first cleaning scraper, connecting ring, second transmission gear ring, second transmission gear, main gear, lifting rack, second transmission rod, guide block, and buffer spring. The filter plate is rotated for cleaning through the third transmission rod, second protective box, bearing, first rotating gear, third transmission gear ring, third transmission gear, rotating ring, second cleaning scraper, and third cleaning scraper. The filter plate and filter cover are linked together to clean impurities, improve the cleaning effect of the filter plate and filter cover, and improve the use effect of the detection device.

[0026] (3) The present invention, through the coordinated use of the collection components, the fixed base, the protective box and the collection box, enables the first cleaning scraper to guide the cleaned impurities into the collection box through the discharge port. Through the structure of the fixed strip, the main rack, the second rotating gear, the first moving gear, the first moving rack and the second bevel gear, when the collection box is installed on the fixed base, the sealing block opens the discharge port, which facilitates the collection box to collect impurities. Through the structure of the first moving gear, the second moving gear, the moving block, the weight block and the second moving rack, when the collection box is disassembled, the sealing block is controlled to seal the discharge port, so as to avoid interfering with the work of the cleaning components, improve the collection efficiency of the collection components and improve the use effect of the detection device. Attached Figure Description

[0027] Figure 1 This is an overall structural diagram of the present invention.

[0028] Figure 2 In this invention Figure 1 Enlarged view of the structure at point A in the middle.

[0029] Figure 3 This is a partial structural diagram of the driving structure and probe rod in this invention.

[0030] Figure 4 This is a partial structural diagram of the anti-disturbance isolation sleeve and cleaning component in this invention.

[0031] Figure 5 In this invention Figure 4 Enlarged view of the structure at point B.

[0032] Figure 6 This is a partial structural diagram of the spiral conveyor rod and the first transmission gear in this invention.

[0033] Figure 7 This is a cross-sectional view of the cleaning component in this invention.

[0034] Figure 8 This is a partial structural diagram of the airbag and the moving strip in this invention.

[0035] Figure 9 This is a partial structural diagram of the filter cover and air intake pipe in this invention.

[0036] Figure 10 This is a partial structural diagram of the collecting components in this invention.

[0037] Figure 11 This is a partial structural diagram of the sealing block and the moving block in this invention.

[0038] In the diagram: 1. Detection equipment; 2. Probe rod; 3. Drive structure; 4. Small lead spiral head; 5. Connector; 6. Anti-disturbance isolation sleeve; 7. Axial protrusion; 8. Axial drain trough; 9. Drive housing; 10. Worm gear structure; 11. Drive motor; 12. Anti-slip handle; 13. Inclined cutting block; 14. Spiral conveyor rod; 15. Support block; 16. Fixing component; 17. Support base; 18. Synchronous belt structure; 19. First transmission rod; 20. First transmission structure; 21. First transmission gear ring; 22. First transmission gear; 23. Transmission pipe; 24. First fixing block; 25. Second fixing block; 26. Protective box; 27. Airbag; 28. Jet pipe; 29. ​​Rotating seat; 30. First one-way valve; 31. Air inlet pipe; 32. Second one-way valve; 33. Moving bar; 34. Drive block; 35. Contact block; 36. First bevel gear structure; 37. Extrusion block; 38. Filter cover; 3 9. Filter box; 40. Filter plate; 41. First cleaning scraper; 42. Connecting ring; 43. Second transmission gear ring; 44. Second transmission structure; 45. Mounting rod; 46. Second transmission gear; 47. Main gear; 48. Lifting rack; 49. Second transmission rod; 50. First protective box; 51. Guide block; 52. Buffer spring; 53. Third transmission rod; 54. Second protective box; 55. Bearing component; 56. First rotating gear; 57. 58. Third transmission gear ring; 59. Rotating ring; 60. Second cleaning scraper; 61. Third cleaning scraper; 62. Fixed base; 63. Collection box; 64. Fixed strip; 65. Main rack; 66. Second rotating gear; 67. Sealing block; 68. First moving gear; 69. First moving rack; 70. Second bevel gear structure; 71. Second moving gear; 72. Moving block; 73. Weight block; 74. Second moving rack. Detailed Implementation

[0039] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0040] Example 1

[0041] Please see Figure 1 - Figure 6This application provides a device for detecting the moisture content of roadbed soil, including a detection device 1 and a detection mechanism connected to the detection device 1. The detection mechanism includes a probe rod 2 connected to the detection device 1 and a drive structure 3 for controlling the rotation of the probe rod 2. The detection mechanism also includes a small-lead spiral head 4 located at the bottom of the probe rod 2 and a connector 5 located at the upper part of the probe rod 2 and connected to the drive structure 3. An anti-disturbance isolation sleeve 6 is movably fitted on the outer side of the probe rod 2. An electrode area is provided on the probe rod 2, and the electrode area detects the moisture content of the roadbed soil through the anti-disturbance isolation sleeve 6. The probe rod 2 adopts a hollow design, so that the electrode wire runs inside the rod and is completely built-in. The outer side of the anti-disturbance isolation sleeve 6 has axial protrusions 7 arranged in a circular array. Several axial protrusions 7 work together to prevent the probe rod 2 from rotating. Friction causes the anti-disturbance isolation sleeve 6 to rotate, structurally ensuring that the anti-disturbance isolation sleeve 6 remains stationary. The outer wall of the anti-disturbance isolation sleeve 6 is treated with an ultra-smooth and wear-resistant finish. The upper end of the anti-disturbance isolation sleeve 6 has several micro-vent holes arranged in a circular array to avoid air blockage and difficulty in screwing in. The outer side of the anti-disturbance isolation sleeve 6 has several axial drainage grooves 8 arranged in a circular array. The axial drainage grooves 8 can be used in conjunction with the small lead screw head 4 to allow the soil and mud generated during the screwing of the probe rod 2 into the roadbed soil to be smoothly discharged along the drainage grooves, avoiding blockage of the electrode area or increased screwing resistance. The lower end of the anti-disturbance isolation sleeve 6 is close to and fits against the rear end of the small lead screw head 4, and is movably sealed with the probe rod 2. The upper end of the anti-disturbance isolation sleeve 6 extends to the bottom of the drive structure 3 housing and is fixedly sealed.

[0042] In this embodiment, at the subgrade soil to be tested, the probe rod 2 is stably aligned with the subgrade soil, and the drive structure 3 is activated, causing the connector 5 to drive the probe rod 2 to rotate. The probe rod 2 drives the small-lead spiral head 4 to rotate and enter the soil. The probe rod 2 drives the anti-disturbance isolation sleeve 6 to move downward, causing the anti-disturbance isolation sleeve 6 to drive the axial protrusion 7 to move in the soil. The small-lead spiral head 4 guides the soil and mud generated during the spiraling process into the axial drainage trough 8, which discharges the mud through the axial drainage trough 8. When the electrode area on the probe rod 2 moves to the position to be tested, the probe rod 2 is controlled by the detection device 1 to detect the moisture content in the soil.

[0043] In this invention, the inner upper and lower ends of the anti-disturbance isolation sleeve 6 are provided with low-friction guide rings that fit with the probe rod 2, making the probe rod 2 more stable during rotation. The lower end of the axial sewage discharge trough 8 is provided with a guide flared structure, which allows the small lead spiral head 4 to smoothly enter the axial sewage discharge trough 8, avoiding blockage and accumulation. The interior of the axial sewage discharge trough 8 is polished and rounded, making the mud discharge smoother and reducing soil disturbance.

[0044] In this invention, the drive structure 3 includes a drive housing 9, a worm gear structure 10 disposed inside the drive housing 9 and connected to the probe rod 2, and a drive motor 11 disposed outside the drive housing 9. The worm gear structure 10 is capable of reversing. The probe rod 2 is connected to the worm gear structure 10 via a connector 5. The upper end of the drive housing 9 is provided with an adapter for rotating the probe rod 2. The adapter is connected to the detection device 1 via an electrical wire. The upper end of the probe rod 2 passes through the drive housing 9. Anti-slip handles 12 are symmetrically provided on the outer side of the drive housing 9. An external support frame can also be attached to the drive housing 9 to facilitate the stable placement of the drive structure 3 on the roadbed. A rotation counting ring can be installed on the output shaft of the drive motor 11 to accurately calculate the depth based on the lead of the spiral head, thereby achieving fixed-depth detection. After the detection is completed, the worm gear structure 10 is reversed by the drive motor 11, thereby removing the probe rod 2 from the soil.

[0045] In this embodiment, when the drive structure 3 is started, the drive motor 11 drives the worm gear structure 10 to work, the worm gear structure 10 drives the connecting piece 5 to rotate, and the connecting piece 5 drives the probe rod 2 to rotate.

[0046] The detection mechanism of this invention also includes a sewage discharge assembly for assisting the axial sewage discharge trough 8 in sewage discharge. The sewage discharge assembly includes several inclined cutting blocks 13 aligned and arranged at the guide flared structure of the axial sewage discharge trough 8. The inclined cutting blocks 13 are designed to prevent large stones from entering the axial sewage discharge trough 8. The sewage discharge assembly also includes a spiral conveying rod 14 aligned with the axial sewage discharge trough 8 and a support block 15 located on the lower inner side of the axial sewage discharge trough 8 and rotatably connected to the bottom end of the spiral conveying rod 14. The lower side of the support block 15 has a V-shaped surface to facilitate the separation of soil in the axial sewage discharge trough 8. The sewage discharge assembly also includes a fixing member 16 disposed at the lower end of the drive housing 9 and a support base 17 connected to the bottom end of the fixing member 16. The support base 17 has a timing belt structure 18 inside which controls the operation of the spiral conveying rod 14. The top end of the spiral conveying rod 14 is rotatably disposed on the lower side of the support base 17. The timing belt structure 18 has a first connecting rod coaxially connected to the spiral conveying rod 14. The timing belt structure 18 has a first transmission rod 19 that passes through the fixing member 16 and extends into the interior of the drive housing 9. The sewage discharge assembly also includes a first transmission structure 20 that drives the probe rod 2 to connect with the first transmission rod 19.

[0047] In this embodiment, when the soil enters the guide funnel structure of the axial sewage discharge trough 8, the inclined cutting block 13 performs preliminary cutting on the soil and prevents large stones from entering the axial sewage discharge trough 8. When the probe rod 2 rotates, it drives the first transmission structure 20 to work, which in turn drives the first transmission rod 19 to rotate. The first transmission rod 19 drives the synchronous belt structure 18 to work, which in turn drives the spiral conveyor rod 14 to rotate, thus conveying the soil in the axial sewage discharge trough 8 upward and assisting the axial sewage discharge trough 8 in discharging sewage.

[0048] In this invention, the first transmission structure 20 includes a first transmission gear ring 21 disposed on the probe rod 2 and a plurality of first transmission gears 22 meshing with the first transmission gear ring 21. The bottom end of the first transmission gear 22 is coaxially provided with a transmission tube 23 that is inserted into the first transmission rod 19. When the probe rod 2 rotates, the transmission tube 23, the first transmission rod 19 and the synchronous belt structure 18 cooperate to control the spiral conveying rod 14 to perform conveying work through the first transmission gear ring 21 and the first transmission gear 22. In this invention, the fixing member 16 includes a first fixing block 24 fixedly disposed on the upper end of the support base 17 and a second fixing block 25 threadedly disposed on the first fixing block 24. The upper end of the second fixing block 25 is threadedly fixed to the drive housing 9.

[0049] In this embodiment, when the probe rod 2 rotates, it drives the first transmission gear ring 21 to rotate, the first transmission gear ring 21 drives the first transmission gear 22 to rotate, the first transmission gear 22 drives the transmission tube 23 to rotate, the transmission tube 23 drives the first transmission rod 19 to rotate, so that the first transmission rod 19 drives the synchronous belt structure 18 to work, and the synchronous belt structure 18 drives the spiral conveyor rod 14 to rotate, thereby conveying the mud in the axial sewage discharge trough 8 upward.

[0050] Example 2

[0051] Based on Example 1, referring to Figure 4 - Figure 9This is the second embodiment of the present invention. In this embodiment, the detection mechanism further includes a cleaning component disposed on the drive housing 9 and used to clean the upper part of the axial drain trough 8. The cleaning component includes a protective box 26 detachably disposed at the lower end of the drive housing 9 and aligned with the support base 17, and an airbag 27 disposed inside the protective box 26. A compression block 37 is provided on the upper inner side of the protective box 26 to compress the airbag 27. The compression block 37 is connected to the airbag 27. A rotating seat 29 is provided at the lower end of the protective box 26, and a rotating part rotatably mounted on the rotating seat 29 is connected to the airbag 27. The 7-connected jet pipe 28 is equipped with a first one-way valve 30, which allows the jet pipe 28 to only blow air. One end of the jet pipe 28 can be aligned with the axial drain trough 8. The outer side of the protective box 26 is equipped with an air inlet pipe 31 that communicates with the airbag 27. A second one-way valve 32 is installed on the air inlet pipe 31, which allows the air inlet pipe 31 to only take in air. When the squeezing block 37 squeezes the airbag 27, the jet pipe 28 blows air into the axial drain trough 8, thereby cleaning the axial drain trough 8.

[0052] In this embodiment, the angle of the jet pipe 28 is adjusted by rotating the seat 29 so that the jet pipe 28 is aligned with the axial drain trough 8. When the squeezing block 37 moves downward, it squeezes the airbag 27, squeezing the gas inside the airbag 27 into the jet pipe 28, so that the jet pipe 28 blows air into the axial drain trough 8, cleaning the mud on the upper part of the axial drain trough 8 and preventing the mud from moving upward to the drive housing 9. When the squeezing block 37 moves upward, the air intake pipe 31 draws the external gas into the airbag 27.

[0053] The cleaning component of this invention also includes a moving strip 33 vertically disposed on the upper end of the squeezing block 37 and a driving block 34 for controlling the moving strip 33 to move up and down. The upper end of the moving strip 33 passes through the protective box 26 and extends into the interior of the driving shell 9, and is provided with a contact block 35 that cooperates with the driving block 34. The driving block 34 is rotatably disposed inside the driving shell 9, and the driving block 34 can periodically squeeze the contact block 35, thereby controlling the moving strip 33 to move up and down.

[0054] In this embodiment, when the drive block 34 rotates to the contact block 35, the contact block 35 is controlled to move downward, so that the contact block 35 drives the moving bar 33 to move downward, the moving bar 33 drives the squeezing block 37 to move downward, and the squeezing block 37 squeezes the airbag 27.

[0055] The cleaning assembly of the present invention also includes a first bevel gear structure 36 coaxially connected to the first transmission gear 22 and a second connecting rod coaxially connected to the first bevel gear structure 36. One end of the second connecting rod is coaxially connected to the drive block 34, so that when the first transmission gear ring 21 controls the first transmission gear 22 to rotate, the first bevel gear structure 36 controls the drive block 34 to work through the second connecting rod, thereby controlling the moving bar 33 to move up and down.

[0056] In this embodiment, when the first transmission gear 22 rotates, it drives the first bevel gear structure 36 to rotate. The first bevel gear structure 36 drives the second connecting rod to rotate. The second connecting rod drives the drive block 34 to rotate. When the drive block 34 contacts the contact block 35, it continues to rotate, which controls the contact block 35 to move downward. The movement of the contact block 35 drives the moving bar 33 to move downward, thereby controlling the squeezing block 37 to squeeze the airbag 27. When the drive block 34 separates from the contact block 35, the squeezing block 37 moves upward to reset.

[0057] The cleaning component of the present invention also includes several guide blocks 51 disposed in the drive housing 9 and movably connected to the moving bar 33, and buffer springs 52 disposed on the guide blocks 51. The moving bar 33 is provided with guide grooves that match the guide blocks 51, and the buffer springs 52 are disposed in the guide grooves.

[0058] In this embodiment, when the moving bar 33 moves, the guide block 51 moves in the guide groove, causing the moving bar 33 to compress the buffer spring 52.

[0059] Example 3

[0060] Based on Example 2, referring to Figure 7 - Figure 9 This is the third embodiment of the present invention. In this embodiment, the cleaning component further includes a filter cover 38 movably disposed at one end of the air intake pipe 31, which can filter the gas entering the air intake pipe 31 and reduce impurities entering the interior of the airbag 27. The cleaning component also includes a filter box 39 disposed inside the protective box 26 and connected to the air intake pipe 31, and a filter plate 40 rotatably disposed inside the filter box 39. The filter box 39 is connected to the airbag 27, so that the filter cover 38 performs preliminary filtration of the gas, and the filter plate 40 performs secondary filtration of the incoming gas, and can introduce the filtered gas into the airbag 27.

[0061] In this embodiment, when the air intake pipe 31 draws in air, the filter cover 38 filters the inhaled gas and introduces the filtered gas into the filter box 39, so that the filter plate 40 filters the inhaled gas again and introduces the gas after two filtrations into the airbag 27.

[0062] In this invention, both the protective box 26 and the filter box 39 are cylindrical. The cleaning assembly also includes a first cleaning scraper 41 disposed inside the filter box 39 to clean the filter plate 40, and an mounting rod 45 that fixes the first cleaning scraper 41 to the filter box 39. The vertical cross-section of the filter plate 40 is circular and is movably sealed with the filter box 39. The filter plate 40 is provided with a connecting ring 42 that is movably connected to the filter box 39. A second transmission gear ring 43 is provided on the outer side of the connecting ring 42. The moving bar 33 is provided with a second transmission structure 44 that controls the rotation of the second transmission gear ring 43, so that the first cleaning scraper 41 can clean the filter plate 40.

[0063] In this embodiment, when the moving bar 33 moves up and down, the second transmission structure 44 drives the second transmission gear ring 43 to rotate, the second transmission gear ring 43 drives the connecting ring 42 to rotate, and the connecting ring 42 drives the filter plate 40 to rotate inside the filter box 39, so that the first cleaning scraper 41 cleans the filter plate 40.

[0064] In this invention, the second transmission structure 44 includes a second transmission gear 46 meshing with the second transmission gear ring 43 and a main gear 47 coaxially arranged with the second transmission gear 46. A first groove matching the main gear 47 is provided on the moving bar 33. A lifting rack 48 meshing with the main gear 47 is installed in the first groove. A second transmission rod 49 detachably connected to the second transmission gear 46 is provided on the main gear 47. A first protective box 50 is provided at the upper end of the protective box 26 to protect the second transmission gear 46.

[0065] In this embodiment, when the moving bar 33 moves, it drives the lifting rack 48 to move. The lifting rack 48 drives the main gear 47 to rotate. The main gear 47 drives the second transmission rod 49 to rotate. The second transmission rod 49 drives the second transmission gear 46 to rotate in the first protective box 50. The second transmission gear 46 drives the second transmission gear ring 43 to rotate, so that the second transmission gear ring 43 drives the filter plate 40 to rotate.

[0066] The cleaning assembly of the present invention further includes a third transmission rod 53 vertically disposed at the center of the filter plate 40 and a second protective box 54 disposed on the air inlet pipe 31 and rotatably connected to the third transmission rod 53. The protective box 26 is provided with a bearing 55 for assisting the rotation of the third transmission rod 53. The interior of the second protective box 54 is provided with a first rotating gear 56 coaxially connected to the third transmission rod 53. The cleaning assembly also includes a third transmission gear ring 57 disposed in the second protective box 54 and controlling the rotation of the filter cover 38, and a third transmission gear 58 meshing with the third transmission gear ring 57. The third transmission gear 58 meshes with the first rotating gear 56. The filter cover 38 is provided with a rotating ring 59 sealed and connected to the second protective box 54. The rotating ring 59 is coaxially connected to the third transmission gear ring 57.

[0067] In this embodiment, when the filter plate 40 rotates, it causes the third transmission rod 53 to rotate, which in turn causes the first rotating gear 56 to rotate, which in turn causes the third transmission gear 58 to rotate, which in turn causes the third transmission gear ring 57 to rotate, which in turn causes the rotating ring 59 to rotate on the second protective box 54, thereby causing the rotating ring 59 to rotate the filter cover 38.

[0068] The cleaning assembly of the present invention also includes two second cleaning scrapers 60 vertically arranged on the outside of the second protective box 54. The second cleaning scrapers 60 are attached to the filter cover 38. A third cleaning scraper 61 is provided between the two second cleaning scrapers 60 to clean the end face of the second protective box 54.

[0069] In this embodiment, when the filter cover 38 rotates, the second cleaning scraper 60 cleans impurities on the outer surface of the filter cover 38, and the third cleaning scraper 61 cleans impurities on the end face of the second protective box 54.

[0070] Example 4

[0071] Based on Example 3, referring to Figure 7 and Figure 10 - Figure 11 This is the fourth embodiment of the present invention. In this embodiment, the detection mechanism further includes a collection component disposed at the lower end of the protective box 26. The collection component includes a fixing seat 62 symmetrically disposed at the lower end of the protective box 26 and a collection box 63 detachably connected to the fixing seat 62. The collection box 63 is provided with a fixing strip 64 that is inserted into the fixing seat 62. The fixing seat 62 is provided with a fixing groove that is connected to the fixing strip 64. Both the protective box 26 and the filter box 39 are provided with discharge ports that match the first cleaning scraper 41. The upper end of the collection box 63 is provided with a feed port that is aligned with the discharge port, so that the first cleaning scraper 41 can guide the cleaned impurities into the collection box 63.

[0072] In this embodiment, when the filter plate 40 rotates, the first cleaning scraper 41 cleans the filter plate 40 of impurities and guides the cleaned impurities into the discharge port. The impurities enter the feed port from the discharge port, so that the collection box 63 collects the impurities.

[0073] The collecting assembly of the present invention further includes a second groove formed on the upper end of the fixing strip 64, a main rack 65 disposed in the second groove, and a second rotating gear 66 rotatably disposed inside the fixing seat 62 and capable of meshing with the main rack 65. The collecting assembly also includes a sealing block 67 for sealing the discharge port and a first moving gear 68 that is connected to the second rotating gear 66 and controls the horizontal movement of the sealing block 67. The lower end of the sealing block 67 is provided with a first moving groove that matches the first moving gear 68. The first moving groove is provided with a first moving rack 69 that meshes with the first moving gear 68. The first moving gear 68 is provided with a second bevel gear structure 70 that is coaxially connected with the second rotating gear 66. One end of the sealing block 67 is inserted into the protective box 26. When the collecting box 63 is fixed to the fixing seat 62, the collecting box 63 and the protective box 26 are fitted and sealed together.

[0074] In this embodiment, the collection box 63 is aligned with the fixing base 62, and the fixing strip 64 is installed in the fixing base 62. When the fixing strip 64 moves to the second rotating gear 66, the main rack 65 and the second rotating gear 66 mesh. The main rack 65 drives the second rotating gear 66 to rotate, which in turn drives the second bevel gear structure 70 to rotate. The second bevel gear structure 70 drives the first moving gear 68 to rotate, and the first moving gear 68 drives the first moving rack 69 to move, which in turn drives the sealing block 67 to move horizontally, opening the discharge port and connecting the collection box 63 with the discharge port.

[0075] The collection assembly of the present invention also includes a second moving gear 71 coaxially connected to the first moving gear 68 via a connecting rod and a moving block 72 drivenly connected to the second moving gear 71. The moving block 72 is provided with a second moving groove, and a second moving rack 74 meshing with the second moving gear 71 is provided in the second moving groove. The bottom end of the moving block 72 extends out of the fixed seat 62 and is provided with a weight block 73, so that after the collection box 63 is disassembled, the sealing block 67 is controlled by the weight block 73 and the moving block 72 to seal the discharge port.

[0076] In this embodiment, when the collection box 63 is disassembled for maintenance, the fixing strip 64 is removed from the fixing seat 62. The main rack 65 and the second rotating gear 66 cooperate through the second bevel gear structure 70 to make the first moving gear 68 control the first moving rack 69 and the sealing block 67 to move horizontally, closing the discharge port. The first moving gear 68 drives the second moving gear 71 to rotate, and the second moving gear 71 drives the second moving rack 74 to move downward. The second moving rack 74 drives the moving block 72 and the weight block 73 to move downward, so that the weight block 73 and the moving block 72 cooperate to limit the sealing block 67, so that the sealing block 67 seals the discharge port.

[0077] The above embodiments are only used to illustrate the technical methods of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of the present invention without departing from the spirit and scope of the technical methods of the present invention.

Claims

1. A device for detecting the moisture content of roadbed soil, characterized in that, include: The testing equipment uses a probe rod to detect the moisture content of the roadbed soil; The small lead screw head is located at the bottom of the probe rod and is used to assist the probe rod in rotating in the roadbed soil. The drive housing has a worm gear structure inside which the probe rod is rotated by a connecting piece, and the drive housing is equipped with a drive motor connected to the worm gear structure; The anti-disturbance isolation sleeve is fitted on the outside of the probe rod and is fitted and limited to the roadbed soil by several axial protrusions. The lower end of the anti-disturbance isolation sleeve is fitted to the rear end of the small lead screw head and is movably sealed with the probe rod. The upper end of the anti-disturbance isolation sleeve extends to the bottom of the drive housing and is fixedly sealed. An axial drainage ditch is located on the outside of the anti-disturbance isolation sleeve and can discharge the soil generated during the insertion of the probe rod into the roadbed soil. Inclined cutting blocks are aligned with the guide bell-shaped structure of the axial sewage discharge trough; The probe rod is equipped with an electrode area, which is protected by an anti-disturbance isolation sleeve to detect the moisture content of the subgrade soil. The axial drainage channel allows the mud and slurry generated during the probe rod's insertion into the subgrade soil to be smoothly discharged along the drainage channel, avoiding clogging of the electrode area or increasing the insertion resistance. The inner side of the axial sewage discharge trough is equipped with a screw conveyor for assisting sludge discharge: The lower inner side of the axial sewage discharge trough is provided with a support block that is rotatably connected to the bottom end of the screw conveyor rod; The lower side of the support block has a V-shaped surface; The lower end of the drive housing is fitted with a support base by a fastener. The support base is equipped with a synchronous belt structure that controls the operation of the spiral conveyor rod. The synchronous belt structure is provided with a first transmission rod that passes through the fixing member and extends into the drive housing; The probe rod is equipped with a first transmission structure that controls the rotation of the first transmission rod.

2. The device for detecting soil moisture content in roadbeds according to claim 1, characterized in that, The first transmission structure includes: The first transmission gear ring is coaxially fixed on the probe rod and is located on the lower side of the worm gear structure; The first transmission gears are arranged in a circular array and mesh with the outer side of the first transmission gear ring; The bottom end of the first transmission gear is provided with a transmission tube that is inserted into the first transmission rod; When the probe rod rotates, the first transmission gear ring and the first transmission gear enable the transmission tube, the first transmission rod and the synchronous belt structure to work together to control the spiral conveyor rod to perform the conveying work.

3. The device for detecting soil moisture content in roadbeds according to claim 2, characterized in that, The lower end of the drive housing is provided with a protective box that works in conjunction with the support base; The protective box contains an airbag and a compression block that compresses the airbag. The lower end of the protective box is equipped with a jet pipe that communicates with the airbag and has an adjustable angle; The jet pipe is equipped with a first check valve; One end of the jet pipe can be aligned with the axial drain trough; The outer side of the protective box is equipped with an air inlet pipe that communicates with the airbag; A second one-way valve is installed on the intake pipe.

4. The device for detecting soil moisture content in roadbeds according to claim 3, characterized in that, The upper end of the extrusion block is provided with a movable strip that extends into the drive housing; The upper end of the moving bar is provided with a contact block; The first transmission gear is coaxially provided with a first bevel gear structure; The first bevel gear structure is provided with a drive block that periodically presses the contact block through the second connecting rod. When the drive block rotates, it controls the moving bar to move up and down. The drive housing is provided with a guide block that is movably connected to the moving bar. The moving bar is provided with a guide groove that matches the guide block; The guide block is equipped with a buffer spring that is connected to the guide groove.

5. The device for detecting soil moisture content in roadbeds according to claim 4, characterized in that, One end of the air intake pipe is equipped with a filter cover; The protective box contains a filter box that communicates with the airbag. The filter box is internally sealed with a filter plate. Both the protective box and the filter box are cylindrical in structure; The filter box is equipped with a first cleaning scraper for cleaning the filter plate.

6. The device for detecting soil moisture content in roadbeds according to claim 5, characterized in that, The outer wall of the filter plate is provided with a connecting ring that is movably connected to the filter box; A second transmission gear ring is provided on the outer side of the connecting ring; The upper end of the protective box is provided with a first protective box; The first protective box is equipped with a second transmission gear inside to control the rotation of the second transmission gear ring; A second transmission rod is coaxially mounted on the second transmission gear; One end of the second transmission rod extends to the moving bar and is equipped with a main gear; The moving bar is equipped with a lifting rack that meshes with the main gear.

7. The device for detecting soil moisture content in roadbeds according to claim 6, characterized in that, A third transmission rod extending vertically from the center of the filter plate into the protective box is provided. The protective box is equipped with bearing components to assist the rotation of the third transmission rod; The air intake pipe is equipped with a second protective box that is rotatably connected to the third transmission rod. The second protective box has a first rotating gear that is coaxially connected to the third transmission rod inside; The second protective box is equipped with a third transmission gear ring that controls the rotation of the filter cover; A third transmission gear meshes between the first rotating gear and the third transmission ring gear. The third transmission gear ring is connected to the filter cover via a rotating ring; The outer side of the second protective box is provided with a second cleaning scraper and a third cleaning scraper that fit against the filter cover.

8. The device for detecting soil moisture content in roadbeds according to claim 7, characterized in that, The protective box is symmetrically provided with fixing bases on its lower side; The fixing base is equipped with a collection box for collecting and cleaning impurities via a fixing strip; Both the protective box and the filter box are provided with discharge ports that match the first cleaning scraper. The fixing bar is provided with a main toothed rack; The fixed base is internally equipped with a second rotating gear that meshes with the main rack. The fixed base is provided with a sealing block to seal the discharge port; The sealing block is provided with a first movable rack on its lower side; The fixed base is internally provided with a first movable gear that meshes with the first movable rack. The first moving gear is provided with a second bevel gear structure that is coaxially connected to the second rotating gear.

9. A device for detecting the moisture content of roadbed soil according to claim 8, characterized in that, The first movable gear is coaxially mounted with the second movable gear via a connecting rod; A second moving gear meshes with a second moving rack on one side; The fixed base is internally equipped with a movable block that is connected to the second movable rack. The bottom end of the movable block extends out of the fixed base and is equipped with a weight block, so that after the collection box is disassembled, the sealing block is controlled by the weight block and the movable block to seal the discharge port.

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