A sampling device for highway construction detection

Abstract

The present invention belongs to the field of highway construction detection equipment, and proposes a sampling device for highway construction detection, including a drill tube, a transmission mechanism, a first motor and a beam base, wherein the transmission mechanism includes a rotating transmission component and a vertical transmission component, and a deformation frame group is arranged at both ends of the beam base, and a support arm connected to the beam base shaft is arranged above the outer side of the deformation frame group, and a moving seat is arranged at one end of the support arm away from the beam base, and a rear box plate slidingly matched with the rear box plate is arranged on the outer side of the moving seat, and a cantilever, a screw shaft, a pulley group, a second motor and a connecting seat are arranged on the rear box plate, and a third motor is arranged on the connecting seat, and a pay-off wheel and a pulley group are arranged on the transmission side of the third motor, and the pay-off wheel and the pulley group are connected by a wire rope transmission, and the third motor drives the pay-off wheel and the pulley group to transmit and deform the deformation frame group. The present invention has a reasonable design, can be synchronously transferred with a vehicle, is conducive to improving sampling efficiency, reducing work intensity, and is suitable for large-scale promotion.

Description

Technical Field

[0001] The invention belongs to the field of highway construction detection equipment, and in particular relates to a sampling device for highway construction detection. Background Art

[0002] Highway pavement generally adopts cement concrete surface layer and asphalt mixture surface layer. In order to ensure that the quality of highway pavement reaches uniform standards, it is necessary to sample and test it, specifically to measure its density or other physical and mechanical properties. Generally, independent sampling equipment is used for highway construction pavement testing, and the sampling steps include: 1. Select the pavement at the sampling location and mark the drilling position with chalk; 2. The drilling rig is firmly placed at the sampling location, vertically aligned with the pavement and lowered; 3. Open the cooling water, start the motor, and press down the drill bit; 4. After drilling through the full thickness, lift the drill rod, pull out the drill bit, stop rotating, and take out the core sample; 5. Label the core samples and arrange them in order in the sampling vehicle or sample box for testing.

[0003] The existing patent CN202311047111.3 discloses a sampling device for detecting the compaction of highway roadbed and pavement, including a bottom plate, a fixed rod, a sliding plate, a top plate, a cutting sampling mechanism, an up and down moving mechanism, and a beating and vibrating mechanism. The device can realize pavement drilling sampling, but like many sampling equipment, although it works independently, it has no motorized walking ability, so each time a sampling point is changed, the staff needs to lift it onto a work vehicle, or directly push it to the next sampling point. This not only has low sampling efficiency, but also high work intensity, especially when the construction road surface is long. Summary of the invention

[0004] In view of the technical problems existing in the above-mentioned sampling device, the present invention proposes a sampling device for highway construction detection which has a reasonable design and can be synchronously transferred with a vehicle, thereby improving sampling efficiency and reducing work intensity.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: a sampling device for highway construction detection provided by the present invention comprises a drill barrel, a transmission mechanism is arranged at the power input end of the drill barrel, a first motor is arranged at the power input end of the transmission mechanism, the transmission mechanism comprises a rotary transmission assembly and a vertical transmission assembly, a beam base for horizontally mounting the first motor is arranged at the top of the rotary transmission assembly, a deformable frame group is arranged at both ends of the beam base, a support arm axially connected to the beam base is arranged above the outer side of the deformable frame group, a movable seat is arranged at one end of the support arm away from the beam base, a rear box plate slidably matched with the movable seat is arranged on the outer side of the movable seat, Cantilevers are provided at both ends of the rear box plate, a screw shaft is provided between the cantilevers, the screw shaft cooperates with the screw transmission hole provided on the support arm, a pulley group is provided at the power input end of the screw shaft, a second motor is provided at the power input end of the pulley group, a connecting seat is provided at the center of the movable seat, a third motor is provided on the side of the connecting seat facing the beam base, a pay-off wheel and a pulley group are provided on the transmission side of the third motor, the pay-off wheel and the pulley group are connected through a wire rope transmission, the pay-off wheel is installed on the connecting seat, the pulley group is connected to the movable seat, the support arm and the deformation frame group, and the third motor drives the pay-off wheel and the pulley group to transmit and cause the deformation frame group to deform.

[0006] Preferably, the vertical transmission assembly includes a square external fixer, the inner wall of the external fixer is provided with a slide groove, the slide groove cooperates with sliders arranged on both sides of the beam base, the top of the external fixer is provided with a top cover, the top cover is connected to the top of the beam base through a screw, the interior of the external fixer is provided with a transmission block located below the beam base, the center of the transmission block is provided with a threaded transmission hole, a clutch block is provided in the threaded transmission hole, the clutch block cooperates with the drill tube transmission and a clutch control assembly is provided at its control end.

[0007] Preferably, the rotary transmission assembly comprises a bevel gear group connected to the first motor, a spline sleeve is provided at the power output end of the bevel gear group, a spline shaft is provided inside the spline sleeve, axially arranged balls are provided on the splines of the spline shaft, and the bottom of the spline shaft is connected to the drill barrel.

[0008] Preferably, a plurality of internal keyways are provided on the side of the drill barrel, and the clutch block comprises an externally threaded barrel, a wedge sleeve which is slidably matched with the externally threaded barrel is provided on the inner side of the externally threaded barrel, a plurality of key teeth are provided on the inner side of the wedge sleeve, and the bottom of the key teeth is connected to the lower position of the externally threaded barrel through a spring, and internal key teeth and external key teeth are provided on the inner and outer sides of the key teeth, the internal key teeth are used to cooperate with the keyways, and the external key teeth are used to cooperate with the wedge sleeve.

[0009] Preferably, the clutch control assembly includes a hollow iron core and a winding, the hollow iron core is nested with a jacket arranged inside an external threaded sleeve, both ends of the winding are connected to a contact plate arranged at the bottom of the jacket, the bottom of the transmission block is provided with positive and negative pole connectors that cooperate with the contact plate, the interior of the transmission block is provided with a power supply and a switch connected to the positive and negative pole connectors, and the top of the wedge sleeve is provided with an armature outer ring, and the armature outer ring is used to cooperate with the hollow iron core through electromagnetic attraction.

[0010] Preferably, the beam-type base includes a square beam, the square beam is provided with a mounting port for installing the first motor, two opposite spiral threaded holes are provided at both ends of the square beam, a clamping block is provided in the threaded hole, and an axis head connected to the support arm is provided at the end of the clamping block.

[0011] Preferably, the deformation frame group includes two outer arms and two inner arms connected in a three-dimensional space, the inner arm is Z-shaped, the outer arm includes a first arm section connected to a shaft head key, one end of the first arm section is provided with a second arm section forming an angle therewith, the end of the second arm section is provided with a third arm section extending toward the first arm section, a connecting plate is provided at the turning point between the first arm section and the second arm section, a waist-shaped hole is provided on the third arm section, the two ends of the inner arm are respectively connected to the waist-shaped hole of one outer arm and the connecting plate of the other outer arm, a torsion spring is provided inside the connecting plate, and the two ends of the torsion spring are respectively connected to the connecting plate and the outer arm.

[0012] Preferably, a through hole is provided on the third arm section, a wire rope head connector is provided in the through hole, the pulley group includes fixed pulleys provided at both ends of the two support arms, movable pulleys are provided at the turning ends of the second arm section and the third arm section, a tensioning pulley is provided on both sides of the pay-off wheel, the pulley group also includes two steering pulleys, the steering pulley is provided on the translation arm, a guide groove is provided at the top end of the translation arm, the guide groove cooperates with the guide plate provided at the bottom of the rear box plate, a fixed hinge is provided on the guide plate, and a telescopic cylinder connected to the translation arm is provided on the fixed hinge.

[0013] Preferably, the steel wire rope comprises two deformed steel wire ropes and two lever arm steel wire ropes, the deformed steel wire rope starting from the steel wire rope head connector is sequentially wound around the driven pulley in a clockwise direction for one circle, around the fixed pulley in a counterclockwise direction for one circle, from the steering pulley to the tensioning pulley until it is connected to the pay-off wheel, and the lever arm steel wire rope starting from the steel wire rope head connector is sequentially wound around the driven pulley in a counterclockwise direction for one circle, from the steering pulley to the tensioning pulley until it is connected to the pay-off wheel.

[0014] Preferably, the pay-off wheel comprises a coaxially arranged front wheel and a rear wheel, each of the front wheel and the rear wheel comprises two wheel grooves, and an electromagnetic clutch is respectively arranged between the front wheel and the rear wheel and between the rear wheel and the third motor.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are:

[0016] 1. The present invention provides a sampling device for highway construction inspection. The device can be installed on the rear of a motor vehicle through a rear box plate and a connecting seat, so that the device can be moved with the vehicle, and the horizontal position of the drill tube can be adjusted by the second motor and the screw shaft. The drill tube can independently complete the rotation and lifting actions under the cooperation of the first motor and the transmission mechanism to complete the sampling, which is beneficial to reduce the sampling work intensity and improve the sampling efficiency.

[0017] 2. The present invention provides a sampling device for highway construction inspection. The third motor is used to drive the pay-off wheel and the pulley group to control the shape of the deformed frame group. It can be effectively unfolded and provide sufficient force arm to ensure the stability of sampling during operation, and can be reasonably folded up in a non-working state to ensure the passability of motor vehicles and the safety of the device.

[0018] 3. The device is reasonably designed and can be transferred synchronously with the vehicle, which is beneficial to improve sampling efficiency, reduce work intensity, and is suitable for large-scale promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 A front view of a sampling device for highway construction detection provided in an embodiment;

[0021] Figure 2 A side view of a sampling device for highway construction detection provided by an embodiment;

[0022] Figure 3 An axonometric diagram of a sampling device for highway construction detection provided in an embodiment;

[0023] Figure 4 A partial cross-sectional view of a sampling device for highway construction detection provided in an embodiment;

[0024] Figure 5 for Figure 4 A magnified schematic diagram of the structure in the middle;

[0025] Figure 6 It is a cross-sectional view of the moving seat, the rear box plate, the connecting seat, the pay-off wheel and the third motor;

[0026] Figure 7 A transmission schematic diagram of a deformed steel wire rope provided in an embodiment;

[0027] Figure 8 A schematic diagram of the transmission of the lever arm wire rope provided in the embodiment;

[0028] In the above figures, 1, drill tube; 2, transmission mechanism; 21, rotary transmission assembly; 211, bevel gear set; 212, spline sleeve; 213, spline shaft; 214, ball; 22, vertical transmission assembly; 221, external fixation frame; 222, top cover; 223, transmission block; 224, threaded transmission hole; 225, clutch block; 2251, external threaded tube; 2252, wedge sleeve; 2253, key teeth; 2253a, internal key teeth; 2253b, external key teeth; 23, clutch control assembly; 231, hollow core; 232, winding; 233, contact plate; 234, positive and negative terminals; 235, armature outer ring; 3, first motor; 4, beam base; 41, square beam; 42, mounting port; 43, clamping block; 44, shaft head; 5, variable shaped frame group; 51, outer arm; 511, first arm section; 512, second arm section; 513, third arm section; 52, inner arm; 53, connecting plate; 54, torsion spring; 6, support arm; 7, moving seat; 8, rear box plate; 81, cantilever; 82, guide plate; 83, fixed hinge support; 9, screw shaft; 10, pulley group; 11, second motor; 12, connecting seat; 13, third motor; 14, pay-off wheel; 141, front wheel; 142, rear wheel; 15, pulley group; 151, fixed pulley; 152, movable pulley; 153, tensioning pulley; 154, steering pulley; 155, wire rope head connector; 16, wire rope; 161, deformed wire rope; 162, force arm wire rope; 17, translation arm; 18, telescopic cylinder; 19, electromagnetic clutch. DETAILED DESCRIPTION

[0029] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict. For the convenience of description, if the words "upper", "lower", "left" and "right" appear below, they only indicate that the upper, lower, left and right directions are consistent with the accompanying drawings themselves, and do not limit the structure.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0031] Examples, such as Figures 1 to 8 As shown, the present invention provides a sampling device for highway construction detection, including a drill tube 1, a transmission mechanism 2 is provided at the power input end of the drill tube 1, and a first motor 3 is provided at the power input end of the transmission mechanism 2. The drill tube 1 includes a tool provided at the bottom thereof, and the tool can perform rotary excavation on the road surface as the drill tube 1 rotates, but the rotary excavation process must involve the participation of lifting and lowering actions, and in order to reduce the manpower input of each sampling action, the present invention adopts a motorized structure to replace the manual lifting process in the prior art, so as to improve the motorized sampling performance of the device.

[0032] Specifically, the transmission mechanism 2 provided by the present invention includes a rotating transmission component 21 and a vertical transmission component 22. A beam base 4 for horizontally mounting a first motor 3 is arranged on the top of the rotating transmission component 21. Deformation frame groups 5 are arranged at both ends of the beam base 4. A support arm 6 axially connected to the beam base 4 is arranged above the outer side of the deformation frame group 5. A moving seat 7 is arranged at one end of the support arm 6 away from the beam base 4. A rear box plate 8 slidably matched with the moving seat 7 is arranged on the outer side of the moving seat 7. An accordion protective cover is arranged within the movable range of the moving seat 7 and the rear box plate 8. Cantilevers 81 are arranged at both ends of the rear box plate 8. A screw shaft 9 is arranged between the cantilevers 81. The screw shaft 9 is connected to the device The screw transmission hole arranged on the support arm 6 is matched, and a pulley group 10 is provided at the power input end of the screw shaft 9, and a second motor 11 is provided at the power input end of the pulley group 10. A connecting seat 12 is provided at the center of the movable seat 7, and a third motor 13 is provided on the side of the connecting seat 12 facing the beam base 4, and a pay-off wheel 14 and a pulley group 15 are provided on the transmission side of the third motor 13. The pay-off wheel 14 and the pulley group 15 are connected by a wire rope 16. The pay-off wheel 14 is installed on the connecting seat 12, and the pulley group 15 is connected to the movable seat 7, the support arm 6 and the deformation frame group 5. The third motor 13 drives the pay-off wheel 14 and the pulley group 15 to transmit and cause the deformation frame group 5 to deform.

[0033] More specifically, after the rotary transmission component 21 obtains power from the first motor 3, it inputs rotary power to the drill tube 1. At the same time, the vertical transmission component 22 can convert the rotary motion into linear motion during the rotation of the drill tube 1, thereby realizing motorized lifting. That is to say, the drill tube 1 can independently complete the rotation and lifting motion under the cooperation of the first motor 3 and the transmission mechanism 2 to realize the sampling process of a certain longitudinal depth. On this basis, the present invention can install the device at the rear of the motor vehicle through the rear box plate 8 and the connecting seat 12. The rear box plate 8 is connected to the end frame of the vehicle bucket or chassis system of the motor vehicle through bolts. The center of the connecting seat 12 can be plugged and positioned with the structure of the rear of the motor vehicle, so that the device can be transferred with the vehicle and reach different sampling sites by driving the motor vehicle. The second motor 11 drives the pulley group 10 to rotate the screw shaft 9. The screw shaft 9 cooperates with the support arm 6 to realize the adjustment of the overall position of the mobile seat 7, thereby fine-tuning the actual horizontal position of the drill tube 1, so that the overall sampling work intensity can be effectively reduced, especially for a longer target road surface, and the sampling efficiency can be effectively improved.

[0034] Furthermore, the third motor 13 provided by the present invention drives the pay-off wheel 14 and the pulley group 15 to control the shape of the deformation frame group 5. It can be effectively unfolded and provide sufficient force arm to ensure the stability of sampling during operation, and can be reasonably folded up in the non-working state to ensure the passability of motor vehicles and the safety of the device; moreover, this method of using the transmission coordination of the pay-off wheel 14, the pulley group 15 and the wire rope 16 to control the deformation frame group 5, on the basis of achieving mobile control, effectively improves the space utilization rate of the equipment, and also reduces the probability of failure in the linkage process, which is convenient for daily maintenance.

[0035] In order to improve the transmission performance of the transmission mechanism 2, the vertical transmission assembly 22 provided by the present invention includes a square external fixing frame 221, the inner wall of the external fixing frame 221 is provided with a slide groove, and the slide groove cooperates with the sliders arranged on both sides of the beam base 4, and the top of the external fixing frame 221 is provided with a top cover 222, and the top cover 222 is connected to the top of the beam base 4 through a screw rod. The interior of the external fixing frame 221 is provided with a transmission block 223 located below the beam base 4, and the center of the transmission block 223 is provided with a threaded transmission hole 224, and a clutch block 225 is provided in the threaded transmission hole 224. The clutch block 225 cooperates with the drill tube 1 for transmission and a clutch control assembly 23 is provided at its control end. Among them, the external fixer 221 is assembled horizontally through the cooperation of the slide groove and the slider, and the longitudinal freedom of the external fixer 221 is limited, and the screw is further positioned; the transmission block 223 and the clutch block 225 can perform threaded transmission to convert the rotational motion into longitudinal linear motion, and the clutch control component 23 is used to control the connection between the clutch block 225 and the drill barrel 1, thereby controlling whether the clutch block 225 obtains the rotational power transmitted from the drill barrel 1.

[0036] Regarding the rotation transmission assembly 21, the rotation transmission assembly 21 provided by the present invention includes a bevel gear set 211 that is transmission-connected to the first motor 3, a spline sleeve 212 is provided at the power output end of the bevel gear set 211, a spline shaft 213 is provided inside the spline sleeve 212, and axially arranged balls 214 are provided on the splines of the spline shaft 213, and the bottom of the spline shaft 213 is connected to the drill tube 1. Among them, the bevel gear set 211 is used to convert the rotation direction output by the first motor 3 into the rotation direction of the spline sleeve 212, the spline sleeve 212 cooperates with the spline shaft 213 through the spline, and after the spline shaft 213 establishes a transmission relationship with the transmission block 223 through the clutch action of the clutch block 225, it can complete linear movement under the support of the balls 214 while generating a rotation action, that is, the drill tube 1 can complete a rotation action and a linear action under the transmission action of the rotation transmission assembly 21 and the vertical transmission assembly 22.

[0037] In order to ensure the clutch performance of the clutch block 225, the present invention is provided with multiple internal keyways on the side of the drill barrel 1, and the clutch block 225 includes an externally threaded barrel 2251, and a wedge sleeve 2252 is provided on the inner side of the externally threaded barrel 2251 to slide up and down with the wedge sleeve 2252. The upper and lower positions of the wedge sleeve 2252 are adjustable, but the degree of freedom in the rotation direction cannot be automatically adjusted. A plurality of key teeth 2253 that are movably matched with the wedge sleeve 2252 are provided on the inner side of the wedge sleeve 2252, and the bottom of the key tooth 2253 is connected to the lower position of the externally threaded barrel 2251 through a spring, and an internal key tooth 2253a and an external key tooth 2253b are provided on the inner and outer sides of the key tooth 2253. The internal key tooth 2253a is used to cooperate with the keyway, and the external key tooth 2253b is used to cooperate with the wedge sleeve 2252. Among them, the thread of the external threaded barrel 2251 directly cooperates with the threaded transmission hole 224 of the transmission block 223, and the up and down sliding of the wedge sleeve 2252 can adjust the radial position of the key tooth 2253. For example, when the wedge sleeve 2252 is inserted downward, its wedge surface and the external key tooth 2253b produce relative movement, and the internal key tooth 2253a enters the internal key groove, thereby establishing a transmission relationship between the transmission block 223, the clutch block 225 and the drill barrel 1 at the same time; conversely, the wedge sleeve 2252 moves upward, and the center distance between its internal key tooth 2253a and the drill barrel 1 decreases under the action of the restoring force of the spring until the key tooth 2253 completely enters the vertical coverage range of the external threaded barrel 2251, thereby releasing the transmission relationship between the clutch block 225 and the drill barrel 1.

[0038] In order to improve the automatic control performance of the wedge sleeve 2252, the clutch control component 23 provided by the present invention includes a hollow iron core 231 and a winding 232. The hollow iron core 231 is nested with a sleeve arranged inside the external threaded sleeve. The two ends of the winding 232 are connected to a contact plate 233 arranged at the bottom of the sleeve. The bottom of the transmission block 223 is provided with positive and negative pole connectors 234 that cooperate with the contact plate 233. The interior of the transmission block 223 is provided with a power supply and a switch connected to the positive and negative pole connectors 234. The top of the wedge sleeve 2252 is provided with an armature outer ring 235, and the armature outer ring 235 is used to cooperate with the hollow iron core 231 through electromagnetic attraction. In this way, the remote control switch can provide current to the winding 232. When the winding 232 generates current, the hollow iron core 231 generates attraction to attract the armature outer ring 235. When the armature outer ring 235 and the hollow iron core 231 are closed, the wedge sleeve 2252 and the key tooth 2253 generate relative movement until the key tooth 2253 and the drill barrel 1 establish a key connection relationship; conversely, the switch is disconnected, the current is lost in the winding 232, the hollow magnet loses attraction, and the armature outer ring 235 connects to the wedge sleeve 2252 to generate an upward recovery action under the action of the spring until the key tooth 2253 and the drill barrel 1 are released from the transmission relationship.

[0039] In order to improve the balance of the beam-type base 4, the beam-type base 4 provided by the present invention includes a square beam 41, and a mounting port 42 for mounting the first motor 3 is provided on the square beam 41. Two opposite spiral threaded holes are provided at both ends of the square beam 41, and clamping blocks are provided in the threaded holes. The ends of the clamping blocks are provided with shaft heads connected to the support arms 6, and the shaft heads are key-connected to the deformation frame group 5. In this way, during the process of contraction of the maximum opening angle of the deformation frame group 5, the two clamping blocks can rotate in opposite directions around the threaded holes until the deformation frame as a whole flips over. The square beam 41 still maintains a certain posture during this process, thereby ensuring the balance of the beam-type base 4.

[0040] Furthermore, the deformation frame group 5 provided by the present invention includes two outer arms 51 and two inner arms 52 connected in a three-dimensional space, the inner arm 52 is in a Z shape, and the relationship between the two outer arms 51 from the side projection is a central symmetric relationship. Specifically, the outer arm 51 includes a first arm section 511 connected to the shaft head key, one end of the first arm section 511 is provided with a second arm section 512 at an angle thereto, the end of the second arm section 512 is provided with a third arm section 513 extending toward the first arm section 511, a connecting plate 53 is provided at the turning point between the first arm section 511 and the second arm section 512, a waist-shaped hole is provided on the third arm section 513, the two ends of the inner arm 52 are respectively connected to the waist-shaped hole of one outer arm 51 and the connecting plate 53 of the other outer arm 51, a torsion spring is provided inside the connecting plate 53, and the two ends of the torsion spring are respectively connected to the connecting plate 53 and the outer arm 51. The torsion spring can keep a certain tension between the inner arm 52 and the outer arm 51, so that they can obtain a reasonable enveloping range under the contraction condition and the opening condition, and provide structural support for the outer arm 51, ensuring that the planes where the two outer arms 51 are located are always in a parallel state. Regarding the outer arm 51, the outer arm 51 can extend its torque on both ends of the beam base 4, which is conducive to improving the balance of the deformation frame group 5 on the beam base 4 and the left and right structures connected thereto; at the same time, the multiple turning nodes on the outer arm 51 provide effective positions for the pulley block 15, providing effective structural support for the linkage action of the pulley block 15.

[0041] In order to improve the automatic control efficiency of the deformation rack group 5, the present invention is provided with a through hole on the third arm section 513, in which a wire rope head connector 155 is provided, the pulley block 15 includes fixed pulleys 151 provided at both ends of the two support arms 6, movable pulleys 152 are provided at the turning ends of the second arm section 512 and the third arm section 513, a tensioning pulley 153 is provided on both sides of the pay-off wheel 14, and the pulley block 15 also includes two steering pulleys 154, which are provided on the translation arm 17, and the top of the translation arm 17 is provided with a guide groove, which cooperates with the guide plate 82 provided at the bottom of the rear box plate 8, and the guide plate 82 is provided with a fixed hinge 83, and the fixed hinge 83 is provided with a telescopic cylinder 18 connected to the translation arm 17. Among them, the telescopic cylinder 18 can improve the stability of the translation arm 17, and reasonably adjust the actual position of the translation arm 17 according to the movement of the entire moving seat 7.

[0042] In coordination with the pulley block 15, the steel wire rope 16 provided by the present invention includes two deformed steel wire ropes 161 and two lever arm steel wire ropes 162. The deformed steel wire rope 161 starts from the steel wire rope head connector 155 and is sequentially wound around the driven pulley 152 in a clockwise direction, is sequentially wound around the fixed pulley 151 in a counterclockwise direction, is sequentially wound from the steering pulley 154 to the tensioning pulley 153 until it is connected to the pay-off wheel 14. The lever arm steel wire rope 162 starts from the steel wire rope head connector 155 and is sequentially wound around the driven pulley 152 in a counterclockwise direction, is sequentially wound from the steering pulley 154 to the tensioning pulley 153 until it is connected to the pay-off wheel 14. In this case, the working length of the deformed steel wire rope 161 can be shortened by winding it through the pay-off wheel 14, causing the outer arm 51 to shrink until the rotation range of the clamping block connected to the foreign currency reaches the limit position. The length of the deformed steel wire rope 161 can be further shortened to flip the entire deformed rack group 5 together with the transmission mechanism 2, thereby achieving safe closure of the main sampling structure to ensure the passability of the motor vehicle during driving. As for the lever steel wire rope 162, since it is not transmitted to the fixed pulley 151, the direction of the pulling force it generates on the outer arm 51 is opposite to the direction of the pulling force of the deformed steel wire rope 161, so that it can act as a lever in the process of applying the pulling force to ensure the balance of the deformed rack group 5 after unfolding, which is conducive to improving the efficiency of its automatic sampling.

[0043] In order to distinguish and control the deformed steel wire rope 161 and the lever steel wire rope 162, the pay-off wheel 14 provided by the present invention includes a coaxially arranged front wheel 141 and a rear wheel 142, each of which includes two wheel grooves, and an electromagnetic clutch 19 is respectively arranged between the front wheel 141 and the rear wheel 142 and between the rear wheel 142 and the third motor 13. Among them, the electromagnetic clutch 19 directly connected to the third motor 13 can control whether the rear wheel 142 establishes a transmission relationship with the third motor 13 by electromagnetic clutch, and the electromagnetic clutch 19 located between the front wheel 141 and the rear wheel 142 also controls whether the front wheel 141 establishes a transmission relationship with the third motor 13 by electromagnetic clutch. In this case, the third motor 13 can distinguish and control the working length of the pay-off wheel 14 for the deformed steel wire rope 161 and the lever steel wire rope 162 under the action of the two electromagnetic clutches 19, so that the deformation rack group 5 can show a better working angle and convergence angle under the action of the pulley group 15 and the steel wire rope 16.

[0044] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A sampling device for highway construction detection, comprising a drill tube, a transmission mechanism is provided at the power input end of the drill tube, and a first motor is provided at the power input end of the transmission mechanism, characterized in that: The transmission mechanism includes a rotary transmission component and a vertical transmission component, a beam base for horizontally mounting a first motor is arranged on the top of the rotary transmission component, deformation frame groups are arranged at both ends of the beam base, a support arm axially connected to the beam base is arranged above the outer side of the deformation frame group, a moving seat is arranged at one end of the support arm away from the beam base, a rear box plate slidably matched with the moving seat is arranged on the outer side of the moving seat, the rear box plate is connected to the end frame of the vehicle bucket or chassis system by bolts, cantilevers are arranged at both ends of the rear box plate, a screw shaft is arranged between the cantilevers, and the screw shaft is connected to the support arm The screw transmission hole on the upper side is matched, a pulley group is provided at the power input end of the screw shaft, a second motor is provided at the power input end of the pulley group, a connecting seat is provided at the center of the mobile seat, the center of the connecting seat is plugged and positioned with the structure of the rear of the motor vehicle, a third motor is provided on the side of the connecting seat facing the beam base, a pay-off wheel and a pulley group are provided on the transmission side of the third motor, the pay-off wheel and the pulley group are connected by a wire rope transmission, the pay-off wheel is installed on the connecting seat, the pulley group is connected to the mobile seat, the support arm and the deformation frame group, and the third motor drives the pay-off wheel and the pulley group to transmit and cause the deformation frame group to deform; The beam-type base comprises a square beam, the square beam is provided with a mounting opening for mounting the first motor, two oppositely spiral threaded holes are provided at both ends of the square beam, a clamping block is provided in the threaded hole, and an end of the clamping block is provided with a shaft head connected to the support arm; The deformation frame group includes two outer arms and two inner arms connected in a three-dimensional space, the inner arm is in a Z shape, the outer arm includes a first section arm connected to the shaft head key, one end of the first section arm is provided with a second section arm at an angle thereto, the end of the second section arm is provided with a third section arm extending toward the first section arm, a connecting plate is provided at the turning point between the first section arm and the second section arm, a waist-shaped hole is provided on the third section arm, the two ends of the inner arm are respectively connected to the waist-shaped hole of one outer arm and the connecting plate of the other outer arm, a torsion spring is provided inside the connecting plate, and the two ends of the torsion spring are respectively connected to the connecting plate and the outer arm; The third arm section is provided with a through hole, a wire rope head connector is provided in the through hole, the pulley block includes fixed pulleys provided at both ends of the two support arms, movable pulleys are provided at the turning ends of the second arm section and the third arm section, a tensioning pulley is provided on both sides of the pay-off wheel, the pulley block also includes two steering pulleys, the steering pulley is provided on the translation arm, the top end of the translation arm is provided with a guide groove, the guide groove cooperates with the guide plate provided at the bottom of the rear box plate, the guide plate is provided with a fixed hinge, and the fixed hinge is provided with a telescopic cylinder connected to the translation arm; The steel wire rope comprises two deformed steel wire ropes and two lever steel wire ropes, wherein the deformed steel wire rope is sequentially wound around the driven pulley in a clockwise direction for one cycle from the steel wire rope head connector, is sequentially wound around the fixed pulley in a counterclockwise direction for one cycle, is sequentially wound around the deflection pulley toward the tensioning pulley until it is connected to the pay-off wheel, and the lever steel wire rope is sequentially wound around the driven pulley in a counterclockwise direction for one cycle from the steel wire rope head connector, is sequentially wound around the driven pulley in a counterclockwise direction for one cycle from the deflection pulley toward the tensioning pulley until it is connected to the pay-off wheel; The pay-off wheel comprises a front wheel and a rear wheel which are coaxially arranged, and each of the front wheel and the rear wheel comprises two wheel grooves. An electromagnetic clutch is respectively arranged between the front wheel and the rear wheel and between the rear wheel and the third motor.

2. A sampling device for highway construction detection according to claim 1, characterized in that: The vertical transmission assembly includes a square external fixer, the inner wall of the external fixer is provided with a slide groove, the slide groove cooperates with sliders arranged on both sides of the beam base, the top of the external fixer is provided with a top cover, the top cover is connected to the top of the beam base through a screw, the interior of the external fixer is provided with a transmission block located below the beam base, the center of the transmission block is provided with a threaded transmission hole, a clutch block is provided in the threaded transmission hole, the clutch block cooperates with the drill tube transmission and a clutch control assembly is provided at its control end.

3. A sampling device for highway construction detection according to claim 2, characterized in that: The rotary transmission assembly includes a bevel gear set connected to the first motor, a spline sleeve is provided at the power output end of the bevel gear set, a spline shaft is provided inside the spline sleeve, axially arranged balls are provided on the splines of the spline shaft, and the bottom of the spline shaft is connected to the drill barrel.

4. A sampling device for highway construction detection according to claim 3, characterized in that: The side of the drill barrel is provided with multiple internal keyways, and the clutch block includes an external threaded barrel, the inner side of the external threaded barrel is provided with a wedge sleeve that slides up and down with the external threaded barrel, the inner side of the wedge sleeve is provided with multiple key teeth, the bottom of the key teeth is connected to the lower position of the external threaded barrel through a spring, and internal key teeth and external key teeth are provided on the inner and outer sides of the key teeth, the internal key teeth are used to cooperate with the keyways, and the external key teeth are used to cooperate with the wedge sleeve.

5. A sampling device for highway construction detection according to claim 4, characterized in that: The clutch control assembly includes a hollow iron core and a winding. The hollow iron core is nested with a jacket arranged inside an external threaded sleeve. Both ends of the winding are connected to a contact plate arranged at the bottom of the jacket. The bottom of the transmission block is provided with positive and negative pole connectors that cooperate with the contact plate. The interior of the transmission block is provided with a power supply and a switch connected to the positive and negative pole connectors. The top of the wedge sleeve is provided with an armature outer ring, and the armature outer ring is used to cooperate with the hollow iron core through electromagnetic attraction.

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