Road test detection sampling structure

Abstract

The invention relates to the technical field of road sampling, and discloses a road test detection sampling structure which comprises a mechanical arm, a mounting plate and a protective cover fixedly connected to the bottom of the mounting plate, and the driving end of the mechanical arm is fixedly connected with the mounting plate. A driving assembly, a hydraulic assembly, a torque adjusting mechanism, a sampler and a water spraying mechanism are arranged in the protective cover; the protective cover is used for covering the outer part of the sampler, and the sampler is used for carrying out roadbed sampling work in the protective cover; the protective cover is connected to the outside of the sampler in a covering manner, so that the sampler performs sampling work in the protective cover, dust dissipation in the sampling process is effectively prevented, interference of the external environment to the sampling process is prevented, the protective cover can reduce the flowing speed of cooling water sprayed by the water spraying mechanism, the cooling water is convenient to gather at the cutting position of the sampler, and the sampling efficiency is improved. Therefore, the cooling effect of the sampler in the sampling process is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of highway sampling, in particular to a highway test detection sampling structure. Background Art

[0002] After the highway construction is completed, it is usually necessary to conduct sampling inspection on the construction highway to ensure the quality of highway construction. When sampling, the highway sampler drills down into the roadbed to extract a cylindrical sample of the highway, and then conducts various data inspections on the sample to determine whether the construction of the section of road is qualified.

[0003] Among them, in the Chinese patent with patent publication number CN113624544B, a sampling device for road surface detection for highway construction technology is disclosed, including: a movable base and a water storage tank, the upper surface of the movable base is slidably connected with a connecting seat, one side of the connecting seat is provided with a sampling drill barrel, and the other side of the movable base is provided with a driving motor, the driving motor is transmission-connected with the sampling drill barrel, a threaded rod is fixedly welded on the top of the sampling drill barrel, a threaded sleeve is threadedly connected to the outer surface of the threaded rod, and a conical insert is rotatably connected to the bottom end of the threaded sleeve, and the conical insert is movably inserted into the inside of the sampling drill barrel; a drain pipe is fixedly installed on the outer surface of the water storage tank, and an annular spray pipe is fixedly installed at the end of the drain pipe, and the annular spray pipe is located directly above the sampling drill barrel, and the water in the water storage tank is continuously pumped into the drain pipe and sprayed downward on the sampling drill barrel through the annular spray pipe, so as to realize automatic spray cooling when the sampling drill barrel rotates, thereby realizing protection of the sampling drill barrel.

[0004] The above-mentioned annular spray pipe is located directly above the sampling drill barrel. Therefore, although it can play a certain cooling role during the spraying process, the overall cooling effect on the sampling drill barrel is poor. The sprayed water cannot directly act on the sampling drill barrel, but needs to enter by flowing, which affects the cooling effect. When the sampling drill barrel drills to a certain depth in the road surface, it is difficult for the water flow to penetrate downward, and the cooling effect on the cutter head of the sampling drill barrel that has drilled to a certain depth is further reduced, which makes the cutter part of the sampling drill barrel easily damaged by high temperature. In addition, the sampling drill barrel and the driving part are fixedly connected. The sample material needs to be unloaded again for each sampling, which is not conducive to multi-point sampling of the highway, resulting in low efficiency of multi-point sampling of the highway. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a highway test detection sampling structure, which is convenient for multi-point sampling of highways, has a good protection effect on the sampler during the sampling process, and effectively improves the service life of the sampler.

[0006] To achieve the above object, the present invention provides the following technical solutions: A highway test sampling structure includes a mechanical arm and a mounting plate, wherein a driving end of the mechanical arm is fixedly connected to the mounting plate, and further includes: A protective cover fixedly connected to the bottom of the mounting plate, wherein a driving assembly, a hydraulic assembly, a torque adjustment mechanism, a sampler and a water spray mechanism are arranged inside the protective cover; The protective cover is used to cover the outside of the sampler, and the sampler performs roadbed sampling work inside the protective cover; The driving assembly is arranged above the sampler, the driving assembly and the sampler are detachably connected, and the driving assembly is used to drive the sampler to rotate; The hydraulic assembly is used to drive the sampler to move downward, and is used to cooperate with the driving assembly to complete the sampling work of the sampler; The water spraying mechanism is arranged at the inner bottom of the protective cover, and is used for spraying water on the outside of the sampler during the sampling process.

[0007] Preferably: the interior of the protective cover is fixedly connected to an inner sleeve rod, the driving assembly includes a driving motor fixedly connected to the outside of the mounting plate, the output end of the driving motor extends to the interior of the inner sleeve rod and is fixedly connected to an output shaft, the outside of the output shaft is movably connected to a sleeve shaft, the bottom of the sleeve shaft is fixedly connected to a driving disk, the output shaft is used to drive the sleeve shaft to rotate, the bottom of the driving disk is fixedly connected to a radial limit block, and a connection limit hole is provided at the bottom of the driving disk.

[0008] Preferably: a key slot is provided on the side of the sleeve shaft, a limiting protrusion is fixedly connected to the bottom of the output shaft, the torque adjustment mechanism includes a motor limiting block, the motor limiting block is sleeved on the outside of the output shaft, a transmission guide rod is fixedly connected to the outside of the motor limiting block, the transmission guide rod is slidably connected to the inside of the key slot, and the motor limiting block is used to engage with the limiting protrusion.

[0009] Preferably, the hydraulic assembly comprises a hydraulic cylinder, an oil inlet regulating valve is arranged outside the hydraulic cylinder, the oil inlet regulating valve is connected to an external oil pump through an oil delivery pipe, and the external oil pump pumps oil to the hydraulic cylinder through the oil inlet regulating valve.

[0010] Preferably: an oil inlet pipe is fixedly connected to the top of the oil inlet regulating valve, and the oil inlet pipe is connected to an external oil pump through an oil delivery pipe, and a first oil outlet pipe and a second oil outlet pipe are also fixedly connected to the outside of the regulating valve, the first oil outlet pipe is communicated with the hydraulic cylinder, and the first oil outlet pipe is located above the second oil outlet pipe, and a regulating valve plate is slidably connected to the inside of the oil inlet regulating valve, and a valve position spring and a controller are provided between the regulating valve plate and the oil inlet regulating valve.

[0011] Preferably: the torque adjustment mechanism also includes a hydraulic limit block, which is fixedly connected to the outside of the transmission guide rod, the hydraulic assembly also includes a hydraulic rotary machine, the output end of the hydraulic rotary machine is fixedly connected to an output gear ring, the hydraulic rotary machine is connected to the second oil outlet pipe, an electromagnetic push rod is arranged on the top of the hydraulic limit block, a plane bearing is arranged between the electromagnetic push rod and the hydraulic limit block, and the electromagnetic push rod is electrically connected to the controller.

[0012] Preferably, an external positioning bearing is arranged outside the driving disc, and a hydraulic push rod is fixedly connected to the output end of the hydraulic cylinder, and the hydraulic push rod is fixedly connected to the top of the external positioning bearing.

[0013] Preferably: the sampler comprises a sampling barrel ring, a connecting block is fixedly connected to the top of the sampling barrel ring, a slot is provided on the top of the connecting block, a rotating limit block adapted to the radial limit block is fixedly connected to the inside of the slot, an adjusting ring is rotatably connected to the inside of the connecting block, a reset spring is provided between the adjusting ring and the connecting block, a control ring is fixedly connected to the outside of the adjusting ring, a plurality of eccentric grooves are provided on the control ring, the connecting block is internally slidably connected to a limiting plug, the limiting plug is slidably connected to the inside of the eccentric groove, a spiral groove and a vertical groove are provided on the outside of the sampling barrel ring, and a toothed knife block is provided on the bottom side of the sampling barrel ring.

[0014] Preferably: the water spray mechanism includes a water supply ring and a rotating ring, the water supply ring is welded to the outside of the sampling tube ring, the rotating ring and the water supply ring are rotatably connected, the rotating ring and the water supply ring are internally communicated, a water pipe for water supply is arranged on the outside of the water supply ring, the water pipe is externally connected to an external water pumping device and a water tank, and a plurality of water spray heads are arranged on the outside of the rotating ring.

[0015] Preferably: the water spray head surrounds the outside of the sampling tube ring, the outside of the rotating ring is fixedly connected with a rotating slide key, the rotating slide key extends toward the axis of the protective cover, and the rotating slide key is slidably connected in any vertical groove.

[0016] Beneficial effects of the present invention: 1. The highway test sampling structure drives the movement of the limit plug through the adjustment ring, thereby facilitating the assembly and disassembly of the sampling tube ring. It is convenient to select different sampling tube rings according to different sampling environments and sampling requirements during the sampling process, thereby effectively improving the applicability of the sampling structure. The overall operation is simple, eliminating the trouble of unloading each time, and facilitating the direct replacement of the sampling tube ring to carry out sampling work at the next sampling point, thereby ensuring the sampling efficiency during multi-point sampling.

[0017] 2. The highway test detection sampling structure, through the coordinated use of the oil inlet regulating valve and the torque regulating mechanism, can automatically adjust the working mode of the sampler when the sampler contacts a high-hard roadbed and the sampler has difficulty in feeding, so that the sampler can automatically switch to being driven by the hydraulic rotary machine, so that the sampler can now perform sampling in a high-torque, low-speed, and low-feed-speed manner, thereby protecting the sampler and avoiding the risk of damage to the sampler and the drive motor due to a sharp increase in pressure between the sampler and the roadbed while the sampler is still in a high-speed rotation state, thereby increasing the service life of the device.

[0018] 3. The highway test sampling structure uses a rotating water spray head to perform circumferential water spraying, thereby effectively ensuring the uniformity of water spraying on the sampling part. At the same time, the spiral grooves and vertical grooves opened on the outside of the sampling tube ring facilitate the water sprayed on the road surface to penetrate into the blade part of the sampling tube ring more easily during the rotation process, thereby improving the cooling effect on the sampling tube ring and avoiding incomplete cooling of the blade part of the sampling tube ring due to the difficulty of water penetration on the road surface. At the same time, when the sampling tube ring rotates, it can drive water to flow downward through the spiral groove, increase the downward penetration speed of water, and increase the cooling effect on the knife part of the sampling tube ring during the rotation process. When the sampling tube ring stops rotating, the road cooling water can easily penetrate downward naturally through the vertical groove, thereby making the amount of cooling water contacted by the knife part of the sampling tube ring during the sampling process of the sampling tube ring and the rotation state, thereby ensuring the cooling effect of the knife part of the sampling tube ring and ensuring the safety of the sampling tube ring during the sampling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an overall schematic diagram of the sampling structure of the present invention; Figure 2 This is a schematic diagram of the connection between the mounting plate, the protective cover and the drive motor of the present invention; Figure 3 This is a schematic diagram of the cross-sectional state of the protective cover of the present invention; Figure 4 It is a schematic diagram of the connection state of the hydraulic assembly and the sampler of the present invention; Figure 5 This is a schematic cross-sectional view of the drive assembly and hydraulic assembly of the present invention; Figure 6 It is a schematic diagram of the connection between the sleeve shaft, the output shaft and the torque adjustment mechanism of the present invention; Figure 7 For the present invention Figure 3 A magnified schematic diagram of part A; Figure 8 For the present invention Figure 6 A magnified schematic diagram of part B; Fig. 9 This is a schematic diagram of the oil inlet regulating valve of the present invention; Fig.10It is a schematic diagram of the drive disk and the sampler of the present invention; Fig.11 It is a schematic diagram of the adjustment ring of the present invention; Fig.12 It is a schematic diagram of the water spraying mechanism of the present invention.

[0020] In the figure: 1. Robotic arm; 2. Mounting plate; 3. Protective cover; 4. Drive assembly; 5. Hydraulic assembly; 6. Torque adjustment mechanism; 7. Sampler; 8. Water spray mechanism; 31. Inner sleeve rod; 41. driving motor; 42. output shaft; 43. sleeve shaft; 44. keyway; 45. limiting convex block; 46. driving plate; 47. external positioning bearing; 48. radial limiting block; 49. connecting limiting hole; 51. Hydraulic cylinder; 52. Oil inlet regulating valve; 53. Hydraulic push rod; 54. Oil hydraulic rotary machine; 55. Output gear ring; 521, oil inlet pipe; 522, first oil outlet pipe; 523, second oil outlet pipe; 524, valve plate; 525, valve position spring; 526, controller; 61. Motor limit block; 62. Hydraulic limit block; 63. Transmission guide rod; 64. Electromagnetic push rod; 71. sampling tube ring; 72. connecting block; 73. limit plug block; 74. slot; 75. rotation limit block; 76. adjustment ring; 77. spiral groove; 78. vertical groove; 761. control ring; 762. eccentric slide groove; 763. reset spring; 81. Water supply ring; 82. Water pipe; 83. Rotating ring; 84. Sprinkler head; 85. Rotating sliding key. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1. Please refer to Figure 1 - Fig.11 A highway test sampling structure includes a mechanical arm 1 and a mounting plate 2, wherein the driving end of the mechanical arm 1 is fixedly connected to the mounting plate 2, and further includes: A protective cover 3 is fixedly connected to the bottom of the mounting plate 2, and a driving assembly 4, a hydraulic assembly 5, a torque adjustment mechanism 6, a sampler 7 and a water spray mechanism 8 are arranged inside the protective cover 3; The protective cover 3 is used to cover the outside of the sampler 7, and the sampler 7 performs roadbed sampling work inside the protective cover 3; The driving assembly 4 is arranged above the sampler 7, and the driving assembly 4 and the sampler 7 are detachably connected, and the driving assembly 4 is used to drive the sampler 7 to rotate; The hydraulic assembly 5 is used to drive the sampler 7 to move downward, and is used to cooperate with the driving assembly 4 to complete the sampling work of the sampler 7; The water spraying mechanism 8 is arranged at the inner bottom of the protective cover 3, and the water spraying mechanism 8 is used for spraying water on the outside of the sampler 7 during the sampling process.

[0023] The mechanical arm 1 is installed outside the engineering vehicle, and the sampling structure is moved by the engineering vehicle.

[0024] When sampling, the engineering vehicle drives to the designated location and controls the mechanical arm 1 to press the protective cover 3 against the top of the location to be sampled.

[0025] The sampling position can be determined by determining the position of the protective cover 3, thereby facilitating the accuracy of the sampling position during the sampling process, so that the sampling structure can accurately sample and reduce the error of the sampling position.

[0026] The mechanical arm 1 can also be installed on an external movable bracket, and the sampling structure can be driven to move by controlling the movable bracket.

[0027] refer to Figure 3-Figure 7 , Fig. 9 In an optional embodiment, the interior of the protective cover 3 is fixedly connected to an inner sleeve rod 31, and the driving assembly 4 includes a driving motor 41 fixedly connected to the outside of the mounting plate 2. The output end of the driving motor 41 extends to the interior of the inner sleeve rod 31 and is fixedly connected to an output shaft 42. The outside of the output shaft 42 is movably connected to a sleeve shaft 43. The bottom of the sleeve shaft 43 is fixedly connected to a driving disk 46. The output shaft 42 is used to drive the sleeve shaft 43 to rotate.

[0028] It should be noted that the driving motor 41 drives the output shaft 42 to rotate, the output shaft 42 drives the sleeve shaft 43 to rotate, and the sleeve shaft 43 drives the driving disc 46 to rotate.

[0029] refer to Figure 5-Figure 7 In an optional embodiment, a driving disk 46 is fixedly connected to the bottom of the sleeve shaft 43 , a connection limiting hole 49 is opened on the bottom side of the driving disk 46 , and a radial limiting block 48 is fixedly connected to the bottom of the driving disk 46 .

[0030] It should be noted that the drive disk 46 is a connecting piece between the drive assembly 4 and the sampler 7 . The drive disk 46 is slidably connected to the inside of the protective cover 3 . The drive disk 46 is connected to the sampler 7 via the limit hole 49 and the radial limit block 48 .

[0031] The protective cover 3 is connected to the outside of the sampler 7, so that the sampler 7 performs sampling work inside the protective cover 3, thereby effectively preventing dust from escaping during the sampling process and preventing the external environment from interfering with the sampling process. The protective cover 3 can reduce the dispersion speed of the cooling water sprayed by the water spray mechanism 8, making it easier for the cooling water to gather at the cutting position of the sampler 7, thereby improving the cooling effect of the sampler 7 during the sampling process.

[0032] In an optional embodiment, a key slot 44 is opened on the side of the sleeve shaft 43, and a limiting protrusion 45 is fixedly connected to the bottom of the output shaft 42. The torque adjustment mechanism 6 includes a motor limiting block 61, which is sleeved on the outside of the output shaft 42. A transmission guide rod 63 is fixedly connected to the outside of the motor limiting block 61, and the transmission guide rod 63 is slidably connected to the inside of the key slot 44. The motor limiting block 61 is used to engage with the limiting protrusion 45.

[0033] It should be noted that the motor limit block 61 and the limit protrusion 45 are both configured to be rectangular cone-shaped. In the initial state, the motor limit block 61 and the limit protrusion 45 are engaged, and the output shaft 42 drives the transmission guide rod 63 to rotate through the motor limit block 61, and the transmission guide rod 63 drives the sleeve shaft 43 to rotate through the key slot 44, and the sleeve shaft 43 drives the drive disk 46 to rotate.

[0034] In an optional embodiment, the hydraulic assembly 5 includes a hydraulic cylinder 51 , an oil inlet regulating valve 52 is arranged outside the hydraulic cylinder 51 , the oil inlet regulating valve 52 is connected to an external oil pump through an oil pipeline, and the external oil pump pumps oil to the hydraulic cylinder 51 through the oil inlet regulating valve 52 .

[0035] An external positioning bearing 47 is disposed outside the driving disc 46 , and a hydraulic push rod 53 is fixedly connected to the output end of the hydraulic cylinder 51 . The hydraulic push rod 53 is fixedly connected to the top of the external positioning bearing 47 .

[0036] It should be noted that when the driving motor 41 drives the sampler 7 to rotate, the external oil pump pumps oil to the hydraulic cylinder 51 through the oil inlet regulating valve 52, and the hydraulic cylinder 51 pushes the driving disk 46 downward through the hydraulic push rod 53, so that the sampler 7 rotates at high speed and moves downward, completing the sampling work of the sampler 7.

[0037] In an optional embodiment, an oil inlet pipe 521 is fixedly connected to the top of the oil inlet regulating valve 52, and the oil inlet pipe 521 is connected to an external oil pump through an oil delivery pipe. The outside of the oil inlet regulating valve 52 is also fixedly connected to a first oil outlet pipe 522 and a second oil outlet pipe 523. The first oil outlet pipe 522 is connected to the hydraulic cylinder 51, and the first oil outlet pipe 522 is located above the second oil outlet pipe 523. The inside of the oil inlet regulating valve 52 is slidably connected to a regulating valve plate 524, and a valve position spring 525 and a controller 526 are arranged between the regulating valve plate 524 and the oil inlet regulating valve 52.

[0038] Among them, the torque adjustment mechanism 6 also includes a hydraulic limit block 62, which is fixedly connected to the outside of the transmission guide rod 63. The hydraulic component 5 also includes a hydraulic rotary machine 54. The output end of the hydraulic rotary machine 54 is fixedly connected to an output gear ring 55. The hydraulic rotary machine 54 is connected to the second oil outlet pipe 523. An electromagnetic push rod 64 is arranged on the top of the hydraulic limit block 62. A plane bearing is arranged between the electromagnetic push rod 64 and the hydraulic limit block 62. The electromagnetic push rod 64 is electrically connected to the controller 526.

[0039] Furthermore, a pressure detector is provided inside the electromagnetic push rod 64 .

[0040] When the output shaft 42 drives the sleeve shaft 43 to rotate through the motor limit block 61, the limit protrusion 45 forms a downward thrust on the motor limit block 61, and the electromagnetic push rod 64 detects that the limit protrusion 45 forms a downward thrust on the motor limit block 61. When the thrust reaches the set safety threshold, the electromagnetic push rod 64 controls the motor limit block 61 to move downward, so that the hydraulic limit block 62 and the output gear ring 55 are engaged.

[0041] The safety threshold is calculated based on the maximum torque load that the drive motor 41 can withstand.

[0042] It should be noted that when the sampler 7 is sampling on a softer roadbed, the driving motor 41 drives the sampler 7 to rotate, and the hydraulic assembly 5 pushes the sampler 7 to move downward to perform stable sampling. However, when the sampler 7 contacts a harder roadbed, it is difficult for the sampler 7 to move downward, and the external oil pump continues to pump oil to the hydraulic cylinder 51 through the oil inlet regulating valve 52. The high-pressure oil pushes the regulating valve plate 524 to move downward, so that the second oil outlet pipe 523 is connected to the oil inlet regulating valve 52, thereby causing part of the hydraulic oil to enter the oil hydraulic rotary machine 54 through the second oil outlet pipe 523, and drive the output gear ring 55 to rotate through the oil hydraulic rotary machine 54.

[0043] At the same time, during the downward movement of the regulating valve plate 524, the regulating valve plate 524 compresses the controller 526, and the controller 526 controls the electromagnetic push rod 64 to start, and the electromagnetic push rod 64 pushes the hydraulic limit block 62 and the motor limit block 61 to move downward as a whole, so that the motor limit block 61 is disengaged from and engaged with the limit protrusion 45, and the hydraulic limit block 62 enters a state of engagement with the output gear ring 55. At this time, the sampler 7 is driven to rotate by the hydraulic rotary machine 54, and the hydraulic oil pumped into the hydraulic cylinder 51 by the oil pump through the oil inlet regulating valve 52 is diverted through the second oil outlet pipe 523, thereby causing the hydraulic cylinder 51 to control the sampler 7 to descend at a reduced speed.

[0044] By using the oil inlet regulating valve 52 and the torque regulating mechanism 6 in coordination, when the sampler 7 contacts a high-hard roadbed and the sampler 7 has difficulty in feeding, the working mode of the sampler 7 can be automatically adjusted, so that the sampler 7 can be automatically switched to be driven by the hydraulic rotary machine 54, so that the sampler 7 can perform sampling in a high-torque, low-rotation speed and low-feed speed mode at this time, thereby protecting the sampler 7 and avoiding the risk of damage to the sampler 7 and the drive motor 41 due to a sharp increase in pressure between the sampler 7 and the roadbed while the sampler 7 is still in a high-speed rotation state, thereby increasing the service life of the device.

[0045] Through the cooperation of the controller 526 and the electromagnetic push rod 64, a two-way monitoring effect is achieved.

[0046] Example 2. Reference Figure 5 , Figure 6 , Fig.10 and Fig.11 On the basis of the first embodiment, the sampler 7 comprises a sampling tube ring 71, a connecting block 72 is fixedly connected to the top of the sampling tube ring 71, a slot 74 is provided on the top of the connecting block 72, a rotation limit block 75 adapted to the radial limit block 48 is fixedly connected to the inside of the slot 74, an adjusting ring 76 is rotatably connected to the inside of the connecting block 72, a reset spring 763 is provided between the adjusting ring 76 and the connecting block 72, a control ring 761 is fixedly connected to the outside of the adjusting ring 76, a plurality of eccentric grooves 762 are provided through the control ring 761, a limiting plug 73 is slidably connected to the inside of the eccentric groove 762, a spiral groove 77 and a vertical groove 78 are provided on the outside of the sampling tube ring 71, and a toothed knife block is provided on the bottom side of the sampling tube ring 71.

[0047] It should be noted that the sampler 7 is installed by connecting the connecting block 72 and the driving disk 46. During the installation process, the driving disk 46 is inserted into the inside of the slot 74, and the radial limit block 48 and the rotation limit block 75 are adapted to be snap-fitted, thereby facilitating the connection block 72 to rotate during the rotation of the driving disk 46, and the connection block 72 drives the sampling tube ring 71 to rotate.

[0048] Among them, the driving disk 46 is inserted into the inside of the slot 74, the limit block 73 is inserted into the inside of the connection limit hole 49, the position and number of the limit block 73 and the connection limit hole 49 are adapted, and the rotation limit block 75 and the radial limit block 48 are matched and snap-fitted.

[0049] By inserting the driving disk 46 into the inside of the slot 74 and the limiting plug block 73 into the inside of the connection limiting hole 49, the installation stability of the sampling tube ring 71 is effectively guaranteed, and the axial positioning and radial positioning of the sampling tube ring 71 are realized, thereby ensuring the stability of the sampling process, and the overall connection method is simple and easy to operate, which facilitates the replacement and maintenance of the sampling tube ring 71, and facilitates the use of different matching sampling tube rings 71 when sampling at multiple points. At the same time, the completed sampling tube ring 71 can be used to store highway cylindrical samples, thereby effectively improving the applicability of the highway structure, and effectively improving the sampling efficiency of the sampling structure when sampling at multiple points on the highway, ensuring the use effect of the sampling structure.

[0050] refer to Figure 5 and Fig.10 Specifically, during the installation process, the slot 74 of the sampling tube ring 71 is inserted into the outside of the driving disk 46, and the bottom of the driving disk 46 squeezes the limit block 73 to move the limit block 73 inward. The limit block 73 drives the adjusting ring 76 to rotate through the eccentric groove 762 and the control ring 761, thereby compressing the reset spring 763. When the limit block 73 reaches the connecting limit hole 49, the reset spring 763 is reset, pushing the adjusting ring 76 to rotate, and the adjusting ring 76 drives the limit block 73 to slide into the connecting limit hole 49 through the control ring 761 and the eccentric groove 762, thereby completing the installation of the sampling tube ring 71.

[0051] When it is necessary to remove the sampling tube ring 71, limit the rotation of the sampling tube ring 71, then twist the adjustment ring 76, and manually control the adjustment ring 76 to rotate relative to the connecting block 72 and the driving disk 46, so that the adjustment ring 76 drives the control ring 761 to rotate inside the connecting block 72, and the control ring 761 drives the limiting plug 73 to disengage from the connection limiting hole 49 through the eccentric groove 762, thereby facilitating the removal of the sampling tube ring 71 and completing the disassembly of the sampling tube ring 71 and the driving disk 46.

[0052] Example 3. Reference Figure 3 , Figure 6 and Fig.12 Furthermore, a spiral groove 77 and a vertical groove 78 are provided on the outer side of the sampling tube ring 71 , and a toothed cutter block is provided on the bottom side of the sampling tube ring 71 .

[0053] It also includes a water spraying mechanism 8, which includes a water supply ring 81 and a rotating ring 83. The water supply ring 81 is welded to the outside of the sampling tube ring 71, the rotating ring 83 and the water supply ring 81 are rotatably connected, the rotating ring 83 and the water supply ring 81 are internally connected, a water pipe 82 for water supply is arranged on the outside of the water supply ring 81, the water pipe 82 is connected to an external water pumping device and a water tank, and a plurality of water spraying heads 84 are arranged on the outside of the rotating ring 83.

[0054] The water spray head 84 surrounds the outside of the sampling tube ring 71 , and a rotating slide key 85 is fixedly connected to the outside of the rotating ring 83 . The rotating slide key 85 extends toward the axis of the protective cover 3 , and the rotating slide key 85 is slidably connected to any one of the vertical grooves 78 .

[0055] When the sampling tube ring 71 is installed, the rotating sliding key 85 is controlled to slide in any vertical groove 78. During the sampling process, water is supplied to the water supply ring 81 through an external water pumping device. The inside of the water supply ring 81 is connected to the rotating ring 83, so the water flow inside the water supply ring 81 enters the rotating ring 83 and is sprayed out through the water spray head 84. At the same time, during the rotation of the sampling tube ring 71, the sampling tube ring 71 drives the water spray head 84 to rotate synchronously, and the rotating water spray head 84 is used to spray water around, thereby effectively ensuring the uniformity of water spraying on the sampling part. At the same time, the spiral groove 77 and the vertical groove 78 opened on the outside of the sampling tube ring 71 make it easier for the water sprayed on the road surface to penetrate into the sampling tube ring 7 during the rotation process. 1, thereby improving the cooling effect on the blade part of the sampling barrel ring 71, avoiding incomplete cooling of the blade part of the sampling barrel ring 71 due to the difficulty of water penetration on the road surface. At the same time, when the sampling barrel ring 71 rotates, it can drive water to flow downward through the spiral groove 77, increase the downward penetration speed of water, and increase the cooling effect on the blade part of the sampling barrel ring 71 during the rotation process. When the sampling barrel ring 71 stops rotating, the road cooling water can easily penetrate downward naturally through the vertical groove 78, thereby making the amount of cooling water contacted by the blade part of the sampling barrel ring 71 during the sampling process of the sampling barrel ring 71 and the rotation state, thereby ensuring the cooling effect on the blade part of the sampling barrel ring 71 and ensuring the safety of the sampling barrel ring 71 during the sampling process.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A highway test sampling structure, comprising a mechanical arm (1) and a mounting plate (2), wherein a driving end of the mechanical arm (1) and the mounting plate (2) are fixedly connected, characterized in that: Also includes: A protective cover (3) fixedly connected to the bottom of the mounting plate (2), wherein a driving assembly (4), a hydraulic assembly (5), a torque adjustment mechanism (6), a sampler (7) and a water spray mechanism (8) are arranged inside the protective cover (3); The protective cover (3) is used to cover the outside of the sampler (7), and the sampler (7) performs roadbed sampling work inside the protective cover (3); The driving assembly (4) is arranged above the sampler (7), the driving assembly (4) and the sampler (7) are detachably connected, and the driving assembly (4) is used to drive the sampler (7) to rotate; The hydraulic assembly (5) is used to drive the sampler (7) to move downward, and is used to cooperate with the driving assembly (4) to complete the sampling work of the sampler (7); The water spray mechanism (8) is arranged at the inner bottom of the protective cover (3), and the water spray mechanism (8) is used to spray water on the outside of the sampler (7) during the sampling process.

2. A highway test detection sampling structure according to claim 1, characterized in that: The protective cover (3) is fixedly connected to an inner sleeve rod (31) inside, the driving assembly (4) comprises a driving motor (41) fixedly connected to the outside of the mounting plate (2), the output end of the driving motor (41) extends to the inside of the inner sleeve rod (31) and is fixedly connected to an output shaft (42), the output shaft (42) is movably connected to a sleeve shaft (43) outside, the sleeve shaft (43) is fixedly connected to a driving disk (46) at the bottom, the output shaft (42) is used to drive the sleeve shaft (43) to rotate, the bottom of the driving disk (46) is fixedly connected to a radial limit block (48), and the bottom of the driving disk (46) is provided with a connection limit hole (49).

3. A highway test sampling structure according to claim 2, characterized in that: A key slot (44) is provided on the side of the sleeve shaft (43); a limit convex block (45) is fixedly connected to the bottom of the output shaft (42); the torque adjustment mechanism (6) comprises a motor limit block (61); the motor limit block (61) is sleeved on the outside of the output shaft (42); a transmission guide rod (63) is fixedly connected to the outside of the motor limit block (61); the transmission guide rod (63) is slidably connected to the inside of the key slot (44); and the motor limit block (61) is used to engage with the limit convex block (45).

4. A highway test sampling structure according to claim 3, characterized in that: The hydraulic assembly (5) comprises a hydraulic cylinder (51), an oil inlet regulating valve (52) is arranged outside the hydraulic cylinder (51), the oil inlet regulating valve (52) is connected to an external oil pump via an oil delivery pipe, and the external oil pump pumps oil into the hydraulic cylinder (51) via the oil inlet regulating valve (52).

5. A highway test sampling structure according to claim 4, characterized in that: The top of the oil inlet regulating valve (52) is fixedly connected to an oil inlet pipe (521), and the oil inlet pipe (521) is connected to an external oil pump via an oil delivery pipe. The outside of the oil inlet regulating valve (52) is also fixedly connected to a first oil outlet pipe (522) and a second oil outlet pipe (523), and the first oil outlet pipe (522) is in communication with the hydraulic cylinder (51), and the first oil outlet pipe (522) is located above the second oil outlet pipe (523). The inside of the oil inlet regulating valve (52) is slidably connected to a regulating valve plate (524), and a valve position spring (525) and a controller (526) are provided between the regulating valve plate (524) and the oil inlet regulating valve (52).

6. A highway test sampling structure according to claim 5, characterized in that: The torque adjustment mechanism (6) further comprises a hydraulic limit block (62), wherein the hydraulic limit block (62) is fixedly connected to the outside of the transmission guide rod (63). The hydraulic assembly (5) further comprises a hydraulic rotary machine (54), wherein an output end of the hydraulic rotary machine (54) is fixedly connected to an output gear ring (55), wherein the hydraulic rotary machine (54) is connected to a second oil outlet pipe (523), wherein an electromagnetic push rod (64) is arranged at the top of the hydraulic limit block (62), wherein a plane bearing is arranged between the electromagnetic push rod (64) and the hydraulic limit block (62), and wherein the electromagnetic push rod (64) is electrically connected to a controller (526).

7. A highway test sampling structure according to claim 6, characterized in that: An external locating bearing (47) is disposed outside the driving plate (46), and a hydraulic push rod (53) is fixedly connected to the output end of the hydraulic cylinder (51), and the hydraulic push rod (53) is fixedly connected to the top of the external locating bearing (47).

8. A highway test sampling structure according to claim 4, characterized in that: The sampler (7) comprises a sampling tube ring (71), a connecting block (72) is fixedly connected to the top of the sampling tube ring (71), a slot (74) is provided on the top of the connecting block (72), a rotation limit block (75) adapted to the radial limit block (48) is fixedly connected inside the slot (74), an adjustment ring (76) is rotatably connected inside the connecting block (72), and a return spring (763) is provided between the adjustment ring (76) and the connecting block (72). ), the outside of the adjustment ring (76) is fixedly connected to a control ring (761), the control ring (761) is provided with a plurality of eccentric sliding grooves (762) extending therethrough, the inside of the connection block (72) is slidably connected to a limit plug block (73), the limit plug block (73) is slidably connected to the inside of the eccentric sliding groove (762), the outside of the sampling tube ring (71) is provided with a spiral groove (77) and a vertical groove (78), and a toothed knife block is provided on the bottom side of the sampling tube ring (71).

9. A highway test sampling structure according to claim 7, characterized in that: The water spray mechanism (8) comprises a water supply ring (81) and a rotating ring (83); the water supply ring (81) is welded to the outside of the sampling tube ring (71); the rotating ring (83) and the water supply ring (81) are rotatably connected; the rotating ring (83) and the water supply ring (81) are internally connected; a water pipe (82) for water supply is arranged outside the water supply ring (81); the water pipe (82) is externally connected to an external water pump device and a water tank; and a plurality of water spray heads (84) are arranged outside the rotating ring (83).

10. A highway test sampling structure according to claim 8, characterized in that: The water spray head (84) surrounds the outside of the sampling tube ring (71), and a rotating slide key (85) is fixedly connected to the outside of the rotating ring (83). The rotating slide key (85) extends toward the axis of the protective cover (3), and the rotating slide key (85) is slidably connected to any one of the vertical grooves (78).

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