A road base thickness detection device

Abstract

The present invention discloses a road base thickness detection device, including a drilling mechanism, a support rod is provided on one side of the drilling mechanism, a control mechanism is movably sleeved on the outside of the support rod, the drilling mechanism is fixedly connected to one side of the control mechanism, the bottom end of the support rod is fixedly connected to a base mechanism, and a screening mechanism is provided on one side of the control mechanism. The present invention lifts the coring drill bit to take out the base core and place it in a protective plate. The user can press the top of the core with a pressing plate by rotating the telescopic ruler to measure the height of the core, and the lifting plate is driven to lift the core by pulling the pull rod, so that it is convenient to use to measure the thickness of each layer of the road base separately, which is convenient for the user to better measure the thickness. The device integrates a variety of measuring tools, avoids the trouble of users carrying a large number of tools, and improves the efficiency of users' measurement.

Description

Technical Field

[0001] The invention relates to the technical field of highway base detection, in particular to a highway base thickness detection device. Background Art

[0002] In highway pavement engineering, the thickness of each layer is closely related to the overall strength of the road. Only when the thickness is guaranteed can the strength of each layer and the whole road surface be guaranteed. In addition to ensuring the strength, strictly controlling the thickness of each structural layer can also play a certain control role in the elevation of the road surface. It is a very important indicator. Therefore, highway base thickness detection is an important link in construction.

[0003] In the prior art, for example, the Chinese patent number CN115059045B, “a roadbed base measuring device for a highway pavement”, comprises a vehicle body, a sampling drill barrel and a rotating transmission assembly; it also comprises a clamping material extraction assembly and a pressing transmission assembly; the sampling drill barrel comprises an outer barrel and an inner barrel; an annular drill tooth is provided at the bottom of the outer barrel; an avoidance gap is provided between the outer barrel and the inner barrel; the clamping material extraction assembly comprises a clamping head rotatably mounted on the inner barrel, and the inner barrel is provided with a plurality of first mounting grooves for mounting the clamping head, and the first mounting grooves are used to retract the clamping head into the inner barrel.

[0004] However, in the prior art, when conducting highway base inspection, a large number of tools are usually needed to drill holes, take samples and measure the highway base. When conducting continuous inspections at multiple locations, a large number of tools are troublesome to carry and inconvenient to operate, which affects the inspection efficiency of the operator. Summary of the invention

[0005] The purpose of the present invention is to provide a highway base thickness detection device to solve the problem raised by the above-mentioned background technology that when conducting highway base detection, a large number of tools are usually needed to drill holes, take samples and measure the highway base. When conducting continuous detection at multiple locations, a large number of tools are troublesome to carry and inconvenient to operate, which affects the detection efficiency of the operator.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a highway base thickness detection device, comprising a drilling mechanism, a support rod is provided on one side of the drilling mechanism, a control mechanism is movably sleeved on the outside of the support rod, the drilling mechanism is fixedly connected to one side of the control mechanism, the control mechanism is used to control the drilling mechanism to lift and move, the bottom end of the support rod is fixedly connected to a base mechanism, a screening mechanism is provided on one side of the control mechanism, the drilling mechanism comprises a driving motor, a controller is fixedly installed on the top of the driving motor, a reducer is fixedly connected to the bottom surface of the driving motor, the output shaft end of the driving motor is fixedly connected to the input shaft end of the reducer, the output shaft end of the reducer is fixedly connected to a transmission shaft, the bottom end of the transmission shaft is fixedly connected to a coring drill bit, the base mechanism comprises a bottom plate, one end of the bottom plate is fixedly connected to a fixing rod, the outer wall of the fixing rod is provided with a limiting slide groove, The top end of the support plate is fixedly provided with a protective plate, the outer wall of the protective plate is penetrated with a drainage hole, and the other end of the top surface of the support plate is penetrated with a bolt, and the bottom end of the bolt is rotatably connected with a pad. The measuring mechanism comprises a pad, and one end of the pad is movably connected to the inner wall of the limiting sliding groove, and the outer wall of one end of the limiting sliding groove is rotatably connected to a roller, and the outer wall of the roller contacts with the inner wall of the limiting sliding groove. The top surface of the pad is provided with a rotating groove, and a telescopic ruler is provided inside the rotating groove, and one end of the telescopic ruler is rotatably connected to the inner wall of the rotating groove, and the other end of the rotating groove is rotatably connected to a pressing plate, and the top surface of the pad is fixedly connected with a protective plate, and the outer wall of the protective plate is penetrated with a drainage hole, and a lifting plate is provided inside the protective plate, and the top surface of the lifting plate is fixedly connected with a pull rod.

[0007] Preferably, a stroke measuring scale is fixedly connected to the outer wall of one side of the support rod, and a fixed tooth plate is fixedly connected to the outer wall of one side of the support rod close to the control mechanism. The setting of the stroke measuring scale makes it convenient for the user to control the downward stroke of the coring drill bit, thereby making it convenient for the user to better perform sampling operations on the pavement base layer.

[0008] Preferably, the control mechanism includes a transmission box, one side of the transmission box is rotatably connected to a connecting shaft, one end of the connecting shaft is movably connected to a control rod, the inner wall of the connecting shaft is rotatably connected to a driving gear, one end of the driving gear is fixedly connected to one end of the connecting shaft, the driving gear is meshingly connected to a fixed tooth plate, and the rotation of the connecting shaft by the control rod drives the meshing between the driving gear and the fixed tooth plate, so that the transmission box moves on the support rod, thereby driving the coring drill bit to move downward through the movable hole through the fixed block to perform coring on the road surface, so that the user can control the depth of coring.

[0009] Preferably, a fixed block is fixedly connected to the outer wall of the transmission box, and one end of the fixed block is fixedly connected to the outer wall of the reducer. Through the setting of the fixed block, the coring drill bit moves downward synchronously with the transmission box, which is convenient for the user to better control.

[0010] Preferably, the four corners of the bottom surface of the base plate are movably connected with universal wheels, and one side of the universal wheel is movably connected with a limit plate, so that the device can be moved and placed on the detection area, and then the universal wheel is locked by pressing the limit plate, thereby stabilizing the device on the ground.

[0011] Preferably, the screening mechanism includes a support frame, the support frame is fixedly connected to the outer wall of the bottom plate, a discharge hopper is fixedly connected to the top surface of one end of the support frame, a screening drum is rotatably connected to one end of the discharge hopper, and screening holes are penetrated through the outer wall of the screening drum. The feeding screw is driven to rotate by starting the second servo motor, so that the core is crushed in the discharge hopper and conveyed to the screening drum, and the crushed base core is screened by using the screening holes on the surface of the screening drum.

[0012] Preferably, a connecting head is movably sleeved on the middle outer wall of the screening drum, a collecting tank is movably connected to the bottom surface of the connecting head, a collecting box is fixedly connected to one side of the connecting head, an end of the collecting box away from the connecting head is fixedly connected to the outer wall of the discharge hopper, and a partition is fixedly connected to the inner wall of the collecting box.

[0013] Preferably, the outer wall of the connecting head is fixedly connected with a connecting block, and the number of the connecting blocks is three, one side of one of the connecting blocks is penetrated by a threaded sleeve rod, and one side of the other two connecting blocks are penetrated by guide rods, one end of the guide rod is fixedly connected to a fixing frame, a first servo motor is fixedly installed on the top of the fixing frame, the output shaft end of the first servo motor is fixedly connected with a screw rod, the threaded sleeve rod is threadedly sleeved on the outer wall of the screw rod, and one end of the screw rod is rotatably connected to the outer wall of the discharge hopper, so as to facilitate the rolling of the device on the aggregate tank for screening operations.

[0014] Preferably, an outer wall of one side of the fixed frame is rotatably connected to one end of the screening drum, a second transmission gear is provided inside the fixed frame, an axial end of the second transmission gear passes through the outer wall of the fixed frame and is fixedly connected to one end of the screening drum, one side of the second transmission gear is meshedly connected to the first transmission gear, one side of the first transmission gear is meshedly connected to a driving gear, a second servo motor is fixedly mounted on the outer wall of one side of the fixed frame, and the driving gear is fixedly connected to the outer wall of the output shaft of the second servo motor, so as to facilitate the user to collect fragments of different sizes as needed.

[0015] Preferably, a feeding screw is provided inside the screening drum, one end of which is rotatably connected to the inner wall of the discharge hopper, and the other end of which is fixedly connected to the output shaft end of the second servo motor, so that the user can judge and classify the quality of the base layer and recycle the core body for subsequent backfilling of the base layer holes.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the present invention, the control mechanism drives the coring drill bit to move downward through the movable hole to perform coring of the road surface. After the coring is completed, the coring drill bit is lifted to take out the base core and place it in the protective plate. The user can measure the height of the core by rotating the telescopic ruler and pressing the top of the core with the pressing plate, and the lifting plate is driven to lift the core by pulling the pull rod, so that the thickness of each layer of the highway base can be measured separately, which is convenient for the user to better measure the thickness. The device integrates a variety of measuring tools, avoids the trouble of users carrying a large number of tools, and improves the measurement efficiency of users.

[0018] 2. In the present invention, the measured base core is placed in the discharge hopper, and the second servo motor is started to drive the feed screw to rotate, so that the core is crushed in the discharge hopper and conveyed to the screening drum, and the screening drum is rolled simultaneously by the transmission of the active gear to the first transmission gear and the second transmission gear, and the crushed base core is screened by the screening holes on the surface of the screening drum. The user can use the collecting tank and the collection box to receive it, which is convenient for the user to judge the quality of the base and collect it by category, and it is convenient for the user to recycle the core for subsequent backfilling of the base holes.

[0019] 3. In the present invention, the roller of the pad slides in the limiting slide groove, so that the user can connect multiple sets of pads to the fixed rod, which is convenient for the user to place multiple cores when performing continuous coring detection, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of a highway base thickness detection device of the present invention;

[0021] Figure 2 It is a three-dimensional rear view structural schematic diagram of a highway base thickness detection device of the present invention;

[0022] Figure 3 This is a schematic diagram of the base structure of a highway base thickness detection device of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of a measuring mechanism of a highway base thickness detection device of the present invention;

[0024] Figure 5 A cross-sectional view of the internal structure of a transmission box of a highway base thickness detection device of the present invention;

[0025] Figure 6 This is a schematic diagram of the screening mechanism structure of a highway base thickness detection device of the present invention;

[0026] Figure 7 A road base thickness detection device according to the present invention Figure 6 A magnified view of the structure at center;

[0027] Figure 8 The present invention is a cross-sectional view of the internal structure of a discharge hopper of a highway base thickness detection device.

[0028] In the figure:

[0029] 1. Drilling mechanism; 11. Driving motor; 12. Controller; 13. Speed ​​reducer; 131. Transmission shaft; 132. Coring drill bit; 2. Base mechanism; 21. Bottom plate; 22. Universal wheel; 221. Limiting plate; 23. Fixing rod; 24. Limiting slide; 25. Support plate; 251. Movable hole; 252. Bolt; 253. Pad; 3. Screening mechanism; 31. Discharging hopper; 32. Screening drum; 321. Screening hole; 33. Threaded sleeve rod; 331. First servo motor; 332. Screw rod; 34. Guide rod; 35. Support frame; 36. Aggregate tank; 361. Connector; 362. Collection box ; 363, connecting block; 364, partition; 37, second servo motor; 371, fixed frame; 372, driving gear; 373, first transmission gear; 374, second transmission gear; 38, feed screw; 4, measuring mechanism; 41, protective plate; 42, drainage hole; 43, pad; 431, rotating groove; 432, telescopic ruler; 433, pressure plate; 44, roller; 45, pull rod; 46, lifting plate; 5, support rod; 51, travel measuring ruler; 52, fixed gear plate; 6, control mechanism; 61, connecting shaft; 62, control rod; 63, transmission box; 64, driving gear; 65, fixed block. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0031] Reference Figure 1-8As shown: a highway base thickness detection device includes a drilling mechanism 1, a support rod 5 is provided on one side of the drilling mechanism 1, a control mechanism 6 is movably sleeved on the outside of the support rod 5, the drilling mechanism 1 is fixedly connected to one side of the control mechanism 6, the control mechanism 6 is used to control the drilling mechanism 1 to move up and down, the bottom end of the support rod 5 is fixedly connected to a base mechanism 2, a screening mechanism 3 is provided on one side of the control mechanism 6, the drilling mechanism 1 includes a driving motor 11, a controller 12 is fixedly installed on the top of the driving motor 11, a reducer 13 is fixedly connected to the bottom surface of the driving motor 11, the output shaft end of the driving motor 11 is fixedly connected to the input shaft end of the reducer 13, the output shaft end of the reducer 13 is fixedly connected to a transmission shaft 131, the transmission shaft The bottom end of 131 is fixedly connected with a coring drill bit 132, the base mechanism 2 includes a bottom plate 21, one end of the bottom plate 21 is fixedly connected with a fixing rod 23, the outer wall of the fixing rod 23 is provided with a limiting slide groove 24, a support plate 25 is provided below the fixing rod 23, the top surface of the support plate 25 is penetrated with a movable hole 251, one end of the support plate 25 is fixedly connected with the outer wall of the bottom plate 21, the other end of the top surface of the support plate 25 is penetrated with a bolt 252 threadedly connected, the bottom end of the bolt 252 is rotatably connected with a cushion block 253, by rotating the bolt 252, the cushion block 253 is pressed against the ground, so that the device remains stable on the ground, one end of the fixing rod 23 is movably connected with a measuring mechanism 4, the measuring mechanism 4 includes a cushion plate 43, the cushion plate 43 One end of the limit slide 24 is movably connected to the inner wall of the limit slide 24, and the outer wall of one end of the limit slide 24 is rotatably connected to a roller 44, and the outer wall of the roller 44 contacts the inner wall of the limit slide 24. The top surface of the pad 43 is provided with a rotating groove 431, and a telescopic ruler 432 is provided inside the rotating groove 431. One end of the telescopic ruler 432 is rotatably connected to the inner wall of the rotating groove 431, and the other end of the rotating groove 431 is rotatably connected to a pressing plate 433. The top surface of the pad 43 is fixedly connected to a protective plate 41, and the outer wall of the protective plate 41 is penetrated with a drainage hole 42. The interior of the protective plate 41 is provided with a lifting plate 46, and the top surface of the lifting plate 46 is fixedly connected to a pull rod 45. By starting the driving motor 11, the core drill 1 is driven through the reducer 13. 32 rotates, the user can drive the coring drill bit 132 to move down through the movable hole 251 through the control mechanism 6 to perform coring on the road surface. After the coring is completed, the coring drill bit 132 is lifted to take out the base core and place it in the protective plate 41. The user can rotate the telescopic ruler 432 to press the top of the core with the pressure plate 433, so as to measure the height of the core, and pull the pull rod 45 to drive the lifting plate 46 to lift the core, so as to facilitate the use of the thickness of each layer of the highway base layer to be measured separately, so that the user can better measure the thickness. The device integrates a variety of measuring tools, avoids the trouble of users carrying a large number of tools, and improves the measurement efficiency of users.

[0032] according to Figure 1 and Figure 2 As shown, a stroke measuring scale 51 is fixedly connected to the outer wall of one side of the support rod 5, and a fixed tooth plate 52 is fixedly connected to the outer wall of one side of the support rod 5 close to the control mechanism 6. The setting of the stroke measuring scale 51 facilitates the user to control the downward movement stroke of the coring drill bit 132, thereby facilitating the user to better perform sampling operations on the pavement base layer.

[0033] according to Figure 2 and Figure 5 As shown, the control mechanism 6 includes a transmission box 63, one side of the transmission box 63 is rotatably connected to a connecting shaft 61, one end of the connecting shaft 61 is penetrated by a control rod 62 that is movably connected, the inner wall of the connecting shaft 61 is rotatably connected to a driving gear 64, one end of the driving gear 64 is fixedly connected to one end of the connecting shaft 61, the driving gear 64 is meshingly connected to a fixed tooth plate 52, and the rotation of the connecting shaft 61 by the control rod 62 drives the meshing between the driving gear 64 and the fixed tooth plate 52, so that the transmission box 63 moves on the support rod 5, thereby driving the coring drill bit 132 to move downward through the movable hole 251 through the fixed block 65 to perform coring on the road surface, so that the user can control the depth of coring.

[0034] according to Figure 5 As shown, the outer wall of the transmission box 63 is fixedly connected with a fixing block 65, and one end of the fixing block 65 is fixedly connected to the outer wall of the reducer 13. Through the setting of the fixing block 65, the coring drill bit 132 moves downward synchronously with the transmission box 63, which is convenient for the user to better control.

[0035] according to Figure 3 As shown, the four corners of the bottom surface of the base plate 21 are movably connected with universal wheels 22, and one side of the universal wheel 22 is movably connected with a limit plate 221. The arrangement of the universal wheel 22 facilitates the movement of the device to the detection area, and then the universal wheel 22 is locked by pressing the limit plate 221, thereby stabilizing the device on the ground.

[0036] according to Figure 2 and Figure 6 As shown, the screening mechanism 3 includes a support frame 35, the support frame 35 is fixedly connected to the outer wall of the bottom plate 21, the top surface of one end of the support frame 35 is fixedly connected to a discharge hopper 31, one end of the discharge hopper 31 is rotatably connected to a screening drum 32, and the outer wall of the screening drum 32 is penetrated with screening holes 321. By placing the measured base core into the discharge hopper 31 and starting the second servo motor 37 to drive the feed screw 38 to rotate, the core is crushed in the discharge hopper 31 and transported to the screening drum 32, and the crushed base core is screened by using the screening holes 321 on the surface of the screening drum 32.

[0037] according to Figure 6-Figure 8As shown, the middle outer wall of the screening drum 32 is movably sleeved with a connecting head 361, the bottom surface of the connecting head 361 is movably connected to the collecting tank 36, one side of the connecting head 361 is fixedly connected to a collecting box 362, the end of the collecting box 362 away from the connecting head 361 is fixedly connected to the outer wall of the discharge hopper 31, and the inner wall of the collecting box 362 is fixedly connected to a partition 364. The setting of the connecting head 361 facilitates the device to roll on the collecting tank 36 for screening operations.

[0038] according to Figure 6-Figure 8 As shown, the outer wall of the connecting head 361 is fixedly connected with a connecting block 363, and the number of the connecting blocks 363 is set to three, one side of one of the connecting blocks 363 is penetrated by a threaded sleeve 33, and one side of the other two connecting blocks 363 is penetrated by a guide rod 34, one end of the guide rod 34 is fixedly connected to a fixing frame 371, and a first servo motor 331 is fixedly installed on the top of the fixing frame 371, and the output shaft end of the first servo motor 331 is fixedly connected with a screw rod 332, and the threaded sleeve 33 is threadedly sleeved on the outer wall of the screw rod 332, and one end of the screw rod 332 is rotatably connected to the outer wall of the discharge hopper 31. By starting the first servo motor 331 to drive the screw rod 332 to rotate, the threaded sleeve 33 moves on the screw rod 332 to drive the connecting head 361 to move, so that the user can control the receiving position of the collecting tank 36 and the collecting box 362, so that the user can collect fragments of different sizes according to needs.

[0039] according to Figure 6-Figure 8 As shown, an outer wall of one side of the fixed frame 371 is rotatably connected to one end of the screening drum 32, a second transmission gear 374 is arranged inside the fixed frame 371, the shaft end of the second transmission gear 374 passes through the outer wall of the fixed frame 371 and is fixedly connected to one end of the screening drum 32, one side of the second transmission gear 374 is meshingly connected to the first transmission gear 373, one side of the first transmission gear 373 is meshingly connected to the driving gear 372, a second servo motor 37 is fixedly installed on the outer wall of one side of the fixed frame 371, the driving gear 372 is fixedly connected to the outer wall of the output shaft of the second servo motor 37, the screening drum 32 is rolled simultaneously by the transmission of the driving gear 372 to the first transmission gear 373 and the second transmission gear 374, and the screening holes 321 on the surface of the screening drum 32 are used to screen the crushed base core, so that the user can judge and classify the quality of the base, and the user can recycle the core for subsequent backfilling of the base holes.

[0040] according to Figure 6-Figure 8As shown, a feeding screw 38 is provided inside the screening drum 32, one end of the feeding screw 38 is rotatably connected to the inner wall of the discharge hopper 31, and the other end of the feeding screw 38 is fixedly connected to the output shaft end of the second servo motor 37. By starting the second servo motor 37 to drive the feeding screw 38 to rotate, the core is crushed in the discharge hopper 31.

[0041] The method of use and working principle of the device: When in use, the user moves the device to the detection area, then presses the limit plate 221 to lock the universal wheel 22 and presses the pad 253 to touch the ground by rotating the bolt 252, so that the device remains stable on the ground, and then starts the drive motor 11 to drive the core drill 132 to rotate through the reducer 13. The user can drive the engagement between the drive gear 64 and the fixed tooth plate 52 by rotating the connecting shaft 61 through the control rod 62, so that the transmission box 63 moves on the support rod 5, and the travel measuring ruler 51 is set. The arrangement is convenient for the user to control the downward movement of the coring drill bit 132, so as to facilitate the user to better perform sampling operations on the road base layer, so that the coring drill bit 132 is driven by the fixed block 65 to move downward through the movable hole 251 to perform coring of the road surface. After the coring is completed, the coring drill bit 132 is lifted to take out the base core and place it in the protective plate 41. The user can rotate the telescopic ruler 432 to press the top of the core body with the pressing plate 433 to measure the height of the core body, and the lifting plate 46 is driven to lift the core body by pulling the pull rod 45, so as to facilitate The thickness of each layer of the highway base is measured separately, which is convenient for users to measure the thickness better. The device integrates various measuring tools, avoids the trouble of users carrying a large number of tools, and improves the efficiency of users' measurement. Through the sliding of the roller 44 of the pad 43 in the limiting slide 24, the user can connect multiple groups of pads 43 on the fixed rod 23, which is convenient for users to place cores during continuous coring detection and is easy to use. After measuring the core thickness, the user can put the measured base core into the discharge hopper 31 and start the second servo The motor 37 drives the feed screw 38 to rotate, so that the core is crushed in the discharge hopper 31 and conveyed to the screening drum 32. The driving gear 372 transmits the transmission to the first transmission gear 373 and the second transmission gear 374 to make the screening drum 32 roll at the same time. The screening holes 321 on the surface of the screening drum 32 are used to screen the crushed base core. The user can use the collecting tank 36 and the collection box 362 to receive it, so that the user can judge the quality of the base and collect it by category, and the user can recycle the core for subsequent backfilling of the base holes.

[0042] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A road base thickness detection device, comprising a drilling mechanism (1), characterized in that: A support rod (5) is provided on one side of the drilling mechanism (1), a control mechanism (6) is movably sleeved on the outside of the support rod (5), the drilling mechanism (1) is fixedly connected to one side of the control mechanism (6), the control mechanism (6) is used to control the drilling mechanism (1) to move up and down, the bottom end of the support rod (5) is fixedly connected to a base mechanism (2), a screening mechanism (3) is provided on one side of the control mechanism (6), the drilling mechanism (1) comprises a driving motor (11), a controller (12) is fixedly mounted on the top of the driving motor (11), and the bottom surface of the driving motor (11) is fixedly connected to a base mechanism (2). The reducer (13) is connected to the output shaft end of the drive motor (11) and is fixedly connected to the input shaft end of the reducer (13). The output shaft end of the reducer (13) is fixedly connected to a transmission shaft (131). The bottom end of the transmission shaft (131) is fixedly connected to a coring drill bit (132). The base mechanism (2) comprises a bottom plate (21). One end of the bottom plate (21) is fixedly connected to a fixing rod (23). A limiting sliding groove (24) is provided on the outer wall of the fixing rod (23). A support plate (25) is provided below the fixing rod (23). A movable hole is provided through the top surface of the support plate (25). (251), one end of the support plate (25) is fixedly connected to the outer wall of the bottom plate (21), the top surface of the other end of the support plate (25) is threadedly connected with a bolt (252), the bottom end of the bolt (252) is rotatably connected with a cushion block (253), one end of the fixed rod (23) is movably connected to a measuring mechanism (4), the measuring mechanism (4) comprises a cushion plate (43), one end of the cushion plate (43) is movably connected to the inner wall of the limiting slide groove (24), one end of the outer wall of the limiting slide groove (24) is rotatably connected to a roller (44), the outer wall of the roller (44) is rotatably connected to the inner wall of the limiting slide groove (24), The top surface of the pad (43) is provided with a rotating groove (431), a telescopic ruler (432) is provided inside the rotating groove (431), one end of the telescopic ruler (432) is rotatably connected to the inner wall of the rotating groove (431), and the other end of the rotating groove (431) is rotatably connected to a pressure plate (433), the top surface of the pad (43) is fixedly connected to a protective plate (41), an outer wall of the protective plate (41) is penetrated by a drainage hole (42), a lifting plate (46) is provided inside the protective plate (41), and the top surface of the lifting plate (46) is fixedly connected to a pull rod (45).

2. A road base thickness detection device according to claim 1, characterized in that: A stroke measuring scale (51) is fixedly connected to an outer wall of one side of the support rod (5), and a fixed tooth plate (52) is fixedly connected to an outer wall of one side of the support rod (5) close to the control mechanism (6).

3. A road base thickness detection device according to claim 2, characterized in that: The control mechanism (6) comprises a transmission box (63), one side of the transmission box (63) is rotatably connected to a connecting shaft (61), one end of the connecting shaft (61) passes through and is movably connected to a control rod (62), an inner wall of the connecting shaft (61) is rotatably connected to a driving gear (64), one end of the driving gear (64) is fixedly connected to one end of the connecting shaft (61), and the driving gear (64) is meshingly connected to a fixed toothed plate (52).

4. A road base thickness detection device according to claim 3, characterized in that: A fixing block (65) is fixedly connected to the outer wall of the transmission box (63), and one end of the fixing block (65) is fixedly connected to the outer wall of the reducer (13).

5. A road base thickness detection device according to claim 1, characterized in that: The four corners of the bottom surface of the bottom plate (21) are all movably connected to universal wheels (22), and one side of the universal wheel (22) is movably connected to a limiting plate (221).

6. A road base thickness detection device according to claim 1, characterized in that: The screening mechanism (3) comprises a support frame (35), the support frame (35) being fixedly connected to the outer wall of the bottom plate (21), a discharge hopper (31) being fixedly connected to the top surface of one end of the support frame (35), a screening drum (32) being rotatably connected to one end of the discharge hopper (31), and a screening hole (321) being provided through the outer wall of the screening drum (32).

7. A road base thickness detection device according to claim 6, characterized in that: A connecting head (361) is movably sleeved on the middle outer wall of the screening drum (32); a collecting tank (36) is movably connected to the bottom surface of the connecting head (361); a collecting box (362) is fixedly connected to one side of the connecting head (361); an end of the collecting box (362) away from the connecting head (361) is fixedly connected to the outer wall of the discharge hopper (31); and a partition plate (364) is fixedly connected to the inner wall of the collecting box (362).

8. A road base thickness detection device according to claim 7, characterized in that: The outer wall of the connecting head (361) is fixedly connected to a connecting block (363), and the number of the connecting blocks (363) is three. A threaded sleeve rod (33) is penetrated and connected to one side of one of the connecting blocks (363), and a guide rod (34) is penetrated and connected to one side of the other two connecting blocks (363). One end of the guide rod (34) is fixedly connected to a fixing frame (371), and a first servo motor (331) is fixedly installed on the top of the fixing frame (371). The output shaft end of the first servo motor (331) is fixedly connected to a screw rod (332), the threaded sleeve rod (33) is threadedly sleeved on the outer wall of the screw rod (332), and one end of the screw rod (332) is rotatably connected to the outer wall of the discharge hopper (31).

9. A road base thickness detection device according to claim 8, characterized in that: An outer wall of one side of the fixed frame (371) is rotatably connected to one end of the screening drum (32); a second transmission gear (374) is arranged inside the fixed frame (371); an axial end of the second transmission gear (374) passes through the outer wall of the fixed frame (371) and is fixedly connected to one end of the screening drum (32); one side of the second transmission gear (374) is meshedly connected to the first transmission gear (373); one side of the first transmission gear (373) is meshedly connected to the driving gear (372); a second servo motor (37) is fixedly mounted on an outer wall of one side of the fixed frame (371); and the driving gear (372) is fixedly connected to the outer wall of the output shaft of the second servo motor (37).

10. A road base thickness detection device according to claim 6, characterized in that: A feeding screw (38) is arranged inside the screening drum (32), one end of the feeding screw (38) is rotatably connected to the inner wall of the discharge hopper (31), and the other end of the feeding screw (38) is fixedly connected to the output shaft end of the second servo motor (37).

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