Roadbed compaction degree automatic detection equipment

Abstract

The invention relates to the technical field of roadbed detection equipment, in particular to roadbed compactness automatic detection equipment which comprises a crawler, a telescopic arm, an adjusting device, an outer drill bit, a pit repairing cutter and an inner drill bit, a miniature telescopic rod is mounted on the inner top wall of the outer drill bit, and a moving plate is mounted at the output end of the miniature telescopic rod; an inner ring is inserted into the inner wall of the outer drill bit, first sliding grooves are formed in the left side and the right side of the inner ring, and a plurality of wedging grooves are formed in the inner walls of the first sliding grooves; the dust collection device has the beneficial effects that when a miniature telescopic push rod is started to drive a moving plate to slide up and down along the inner wall of an inner ring, fixing columns are driven to be attached to wedging grooves one by one, the moving plate is made to vibrate through the elastic force of an elastic piece, dust on the inner wall of the inner ring is vibrated into a collection bag, and then the dust is prevented from falling to the outside; the accuracy of roadbed compactness detection is influenced, and the use effect of the automatic roadbed compactness detection equipment is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of roadbed detection equipment, in particular to automatic detection equipment for roadbed compaction. Background Art

[0002] The sand filling method is an engineering method used to measure the density of fine-grained soil, sandy soil and gravel soil on site. By using standard sand to replace the aggregate in the test hole, the actual dry density of the sample can be calculated. When digging the test hole, in order to ensure the accuracy of the test hole excavation, it is necessary to use automatic roadbed compaction detection equipment.

[0003] In the prior art, traditional roadbed compaction detection usually requires manual digging at the detection site using a hammer and a chisel. This method is not only inefficient and labor-intensive, but also difficult to effectively control the depth and inclination of the entire pit, resulting in the test hole being prone to inclination errors, thereby affecting the detection accuracy. Existing roadbed compaction detection generally uses automated detection equipment, which will dig the test hole before detection, and the operator can complete the excavation of the test hole without the help of tools. However, since the excavation drill bit needs to be shaken during the excavation process to facilitate the collection of the generated dust, this will cause the dust to fall to the outside, thereby affecting the accuracy of dust collection, and ultimately affecting the accuracy of the roadbed compaction detection results.

[0004] Therefore, an automated detection device for roadbed compaction is needed to solve the problem that the existing automated detection equipment needs to shake the excavation drill bit, causing dust to fall to the outside, thereby affecting the accuracy of roadbed compaction detection. Summary of the invention

[0005] The purpose of the present invention is to provide an automatic detection device for roadbed compaction to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automated detection device for roadbed compaction, comprising a crawler vehicle, a telescopic arm, an adjustment device, an outer drill bit, a pit repair tool and an inner drill bit, the inner top wall of the outer drill bit is installed with a micro telescopic rod, the output end of the micro telescopic rod is installed with a movable plate, the inner wall of the outer drill bit is plugged with an inner ring, the left and right sides of the inner ring are provided with a slide groove 1, the inner wall of the slide groove 1 is provided with a plurality of mating grooves, the left and right sides of the inner wall of the movable plate are plugged with fixed columns, the fixed columns on the left and right sides are plugged into the inner wall of the upper mating groove, and the movable plate is slidably connected to the inner wall of the inner ring.

[0007] Preferably, the movable plate is provided with insert rods on both the front and rear sides of the bottom, the outer drill bit is provided with fixing blocks on both the front and rear sides of the inner wall, the movable plate is provided with a second slide groove on both the left and right sides, the inner wall of the second slide groove is provided with a connecting plate, and elastic parts are provided on the adjacent sides of the connecting plates on the left and right sides.

[0008] Preferably, the adjacent sides of the elastic members on the left and right sides are both installed on the inner wall of the second slide groove, and the separated sides of the connecting plates on the left and right sides are both installed between the fixing columns.

[0009] Preferably, storage grooves are provided on both left and right sides of the lower part of the outer drill bit, a fixing groove is provided on the upper side of the inner wall of the storage groove, a support block is hinged on the inner wall of the storage groove, an insertion plate is inserted on the separated sides of the support blocks on the left and right sides, a rubber clamp is installed on the adjacent sides of the insertion plates on the left and right sides, and a card slot is provided on the top of the support block.

[0010] Preferably, the rubber clamp is inserted into the inner wall of the clamping slot, and the rubber clamp is in an extruded deformation state.

[0011] Preferably, the support blocks on the left and right sides are symmetrically arranged, and when the support blocks are hinged to the inner wall of the storage groove, the separated sides of the left and right side plug boards are both plugged into the inner wall of the fixing groove.

[0012] Preferably, a limiting groove is provided at the bottom of the support block, installation grooves are provided on both the front and rear sides of the upper part of the inner ring, plug blocks are installed on both the left and right sides of the lower part of the inner ring, and a slot is provided in the middle of the plug block.

[0013] Preferably, the plug block is inserted into the inner wall of the limiting groove, the adjacent sides of the plug plates on the left and right sides penetrate the support block and are inserted into the inner wall of the slot, and the bottom wall of the mounting groove fits with the fixing block.

[0014] Preferably, fixing screws are inserted on both the front and rear sides of the bottom of the inner ring, the pit repairing tool is inserted at the bottom of the inner ring, and the adjacent sides of the fixing screws on the front and rear sides pass through the inner ring and are threadedly connected to the pit repairing tool.

[0015] Preferably, the fixed columns on the left and right sides are symmetrically arranged, the inner drill bit is arranged in the middle of the inner ring, and the inner drill bit is installed at the bottom of the movable plate, and the bottom of the outer drill bit is inserted into the lower part of the inner ring.

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

[0017] The automatic detection device for roadbed compaction proposed in the present invention starts the micro-telescopic push rod to drive the moving plate to slide up and down along the inner wall of the inner ring, while driving the fixed columns to fit into the fitting grooves one by one, and utilizes the elastic force of the elastic part to make the moving plate vibrate, and shake the dust on the inner wall of the inner ring into the collection bag, thereby preventing the dust from falling to the outside and affecting the accuracy of the roadbed compaction detection, thereby further improving the use effect of the automatic detection device for roadbed compaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a stereogram of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the pit repair tool of the present invention;

[0020] Figure 3 It is a left side view of the outer drill bit of the present invention;

[0021] Figure 4 for Figure 3 Structural cross-section at AA in the middle;

[0022] Figure 5 It is a front view of the outer drill bit of the present invention;

[0023] Figure 6 for Figure 5 Structural cross-section at the middle BB;

[0024] Figure 7 This is a cross-sectional view of the structure after the support block of the present invention is opened;

[0025] Figure 8 This is a cross-sectional view of the structure after the support block of the present invention is stored;

[0026] Fig. 9 This is a schematic diagram of the support block structure of the present invention;

[0027] Fig.10 for Fig. 9 Structural cross-section at DD in the middle;

[0028] Fig.11 This is a schematic diagram of the inner ring structure of the present invention;

[0029] Fig.12 for Fig.11 Structural cross-section at EE;

[0030] Fig.13 for Figure 5 Structural cross-section at the middle CC;

[0031] Fig.14 This is a schematic diagram of the plug structure of the present invention;

[0032] Fig.15 for Fig.14 Structural cross-section at FF in the middle;

[0033] Fig.16 This is a cross-sectional view of the structure after the inner drill bit of the present invention is extended;

[0034] Fig.17 This is a cross-sectional view of the structure of the pit repairing tool of the present invention after being disassembled.

[0035] In the figure: 1. crawler vehicle; 2. telescopic arm; 3. adjustment device; 4. outer drill bit; 5. pit repair tool; 6. inner ring; 7. inner drill bit; 8. micro telescopic rod; 9. movable plate; 10. plug rod; 11. fixed block; 12. storage slot; 13. support block; 14. fixed slot; 15. plug plate; 16. limiting slot; 17. clamping slot; 18. rubber clamp; 19. plug block; 20. slide slot one; 21. fitting slot; 22. installation slot; 23. slot; 24. fixing screw; 25. fixing column; 26. elastic member; 27. connecting plate; 28. slide slot two. DETAILED DESCRIPTION

[0036] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit 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.

[0037] Example 1: Please refer to Figures 1 to 17 The present invention provides a technical solution: an automatic detection device for roadbed compaction, comprising a crawler vehicle 1, a light high-frequency ground penetrating radar is arranged at the bottom of the crawler vehicle 1, the geological conditions of the detection position are mastered before the roadbed compaction detection, a mode, a telescopic arm 2, an adjustment device 3, an outer drill bit 4, a pit repair tool 5 and an inner drill bit 7 are reasonably selected, a micro telescopic rod 8 is installed on the inner top wall of the outer drill bit 4, a moving plate 9 is installed on the output end of the micro telescopic rod 8, an inner wall of the outer drill bit 4 is plugged with an inner ring 6, and a slide groove 20 is opened on both sides of the left and right sides of the inner ring 6, and the slide groove 20 is opened on both sides of the left and right sides of the inner ring 6. A plurality of fitting grooves 21 are provided on the inner wall of 20, and fixed columns 25 are inserted on the left and right sides of the inner wall of the movable plate 9, and the fixed columns 25 on the left and right sides are inserted in the inner wall of the upper fitting groove 21, and the movable plate 9 is slidably connected to the inner wall of the inner ring 6; the fixed columns 25 on the left and right sides are symmetrically arranged, the inner drill bit 7 is arranged in the middle of the inner ring 6, and the inner drill bit 7 is installed at the bottom of the movable plate 9, so as to facilitate the subsequent use when breaking the central soil, and the bottom of the outer drill bit 4 is inserted in the lower part of the inner ring 6, so as to facilitate the subsequent separate disassembly and assembly of the inner ring 6 to clean the inner wall of the outer drill bit 4.

[0038] First, use the wireless remote control device to start, and use the crawler vehicle 1 to drive the telescopic arm 2, the adjustment device 3 and the outer drill bit 4 to the target position, then select the appropriate drilling mode, at this time, unscrew the two fixing screws 24, and remove the pit repair tool 5 from the bottom of the inner ring 6, then start the micro telescopic rod 8 to drive the moving plate 9 to move downward, and push the inner drill bit 7 to extend downward. As the inner drill bit 7 moves downward, the fixing blocks 11 on both sides of it are gradually inserted downward into the inner wall of the insertion rod 10. When it is fully inserted, the outer drill bit 4 can be started to drive the inner drill bit 7 to break the central soil. After the breaking is completed, the collecting belt is hung on the outside of the left and right side plug plates 15, and then the micro telescopic rod 8 is started to drive the movable plate 9 to move back and forth on the inner wall of the inner ring 6, and drive the fixed columns 25 on the left and right sides to slide along the inner wall of the slide groove 1 20. When one end of the fixed column 25 is separated from the fitting groove 21, it will shrink to the inner wall of the slide groove 28. Through the reciprocating movement of the movable plate 9, the fixed columns 25 are driven to reciprocate and fit between the fitting grooves 21 one by one, thereby causing the movable plate 9 to vibrate, and shake the dust on the inner wall of the inner ring 6 into the collecting bag, thereby effectively preventing the dust from falling to the outside.

[0039] Embodiment 2: On the basis of embodiment 1, in order to make the movable plate 9 in a vibrating state when the fixed columns 25 are fitted with the fitting grooves 21 one by one, the bottom of the movable plate 9 is provided with plug rods 10 on both sides, and the inner wall of the outer drill bit 4 is provided with fixed blocks 11 on both sides. The inner left and right sides of the movable plate 9 are provided with a second slide groove 28, and the inner wall of the second slide groove 28 is provided with a connecting plate 27. The adjacent sides of the connecting plates 27 on the left and right sides are provided with elastic members 26; the adjacent sides of the elastic members 26 on the left and right sides are installed on the inner wall of the second slide groove 28, and the separated sides of the connecting plates 27 on the left and right sides are installed between the fixed columns 25, so that when the movable plate 9 is pushed downward, the fixed columns 25 on both sides thereof are driven to shrink to the inner wall of the second slide groove 28, and then when moving downward, the elastic force of the elastic member 26 is used to push the fixed columns 25 to be plugged into the fitting grooves 21 one by one, so that the movable plate 9 vibrates, thereby shaking off the dust on the inner wall of the outer drill bit 4.

[0040] Starting the micro telescopic rod 8 drives the moving plate 9 to move back and forth up and down on the inner wall of the inner ring 6, and drives the fixed columns 25 on its left and right sides to slide along the inner wall of the slide groove 1 20. When one end of the fixed column 25 disengages from the fitting groove 21, it will shrink to the inner wall of the slide groove 28, and push the connecting plate 27 to squeeze the elastic member 26. When the fixed column 25 moves downward along the inner wall of the slide groove 1 20 to the inner wall of the next-level fitting groove 21, the elastic force of the elastic member 26 is utilized to drive the connecting plate 27 and push one end of the fixed column 25 to fit between the fitting groove 21. Through the reciprocating movement of the moving plate 9, the fixed columns 25 are driven to reciprocate and fit between the fitting grooves 21 one by one, thereby causing the moving plate 9 to vibrate, and shaking the dust on the inner wall of the inner ring 6 into the collection bag, thereby effectively preventing the dust from falling to the outside.

[0041] Embodiment 3: On the basis of embodiment 2, in order to facilitate the hanging of the collection belt, storage grooves 12 are provided on both sides of the lower part of the outer drill bit 4, and a fixing groove 14 is provided on the upper side of the inner wall of the storage groove 12. A support block 13 is hinged on the inner wall of the storage groove 12, and a plug plate 15 is inserted on the separated sides of the left and right support blocks 13, and a rubber clamp 18 is installed on the adjacent sides of the left and right plug plates 15. A clamping groove 17 is provided on the top of the support block 13; the rubber clamp 18 is inserted into the inner wall of the clamping groove 17, and the rubber clamp 18 is in an extruded deformation state, so that the rubber clamp 18 is used to increase the stability of the installation between the plug plate 15 and the support block 13; the left and right support blocks 13 are symmetrically arranged, and when the support blocks 13 are hinged to the inner wall of the storage groove 12, the separated sides of the left and right plug plates 15 are inserted into the inner wall of the fixing groove 14, so that the support blocks 13 can be folded and stored for subsequent use.

[0042] When it is necessary to store the support block 13 to the inner wall of the receiving groove 12, the plug plates 15 on the left and right sides are pulled out of the inner wall of the slot 23, and the rubber clamp 18 is driven to disengage from the clamping groove 17, and then the inner ring 6 is pulled downward to scrape along the inner wall of the outer drill bit 4, and the plug block 19 is driven to disengage from the limiting groove 16, so that the inner ring 6 is used to scrape off the dust remaining on the inner wall of the outer drill bit 4, and the fixing block 11 is allowed to slide along the inner wall of the mounting groove 22. When the inner ring 6 is completely removed, the plug plate 15 is reset, and the support block 13 is folded to the inner wall of the receiving groove 12, so that the side of the plug plates 15 on the left and right sides that are separated from each other is converted from a horizontal state to a vertical state, and then one side of it is driven to be plugged into the inner wall of the fixing groove 14, so that the support block 13 is stuck between the receiving groove 12, and the outer drill bit 4 can be started to trim the pit surface.

[0043] Embodiment 4: On the basis of embodiment 3, in order to facilitate the removal of the inner ring 6 so as to scrape and clean the inner wall of the outer drill bit 4, a limiting groove 16 is provided at the bottom of the support block 13, and mounting grooves 22 are provided on both the front and rear sides of the upper part of the inner ring 6. Insert blocks 19 are installed on both the left and right sides of the lower part of the inner ring 6, and a slot 23 is provided in the middle of the insert block 19; the insert block 19 is inserted into the inner wall of the limiting groove 16, and the adjacent sides of the left and right side insert plates 15 penetrate the support block 13 and are inserted into the inner wall of the slot 23, so that one side of the insert plate 15 is inserted into the inner wall of the slot 23, and then the insert block 19 and the support block 13 are clamped together, so as to facilitate the subsequent disassembly and assembly of the inner ring 6, and the bottom wall of the mounting groove 22 is fitted with the fixing block 11, so that when the inner ring 6 is pulled downward to separate from the outer drill bit 4, the mounting groove 22 is gradually separated from the fixing block 11, so as to remove the inner ring 6, and the fixing block 11 is used to achieve a positioning effect to prevent the inner ring 6 from being inserted incorrectly.

[0044] Pull out the plug plates 15 on the left and right sides respectively to disengage from the inner wall of the slot 23, and drive the rubber clamp 18 to disengage from the slot 17, then pull the inner ring 6 downward to scrape it along the inner wall of the outer drill bit 4, and drive the plug block 19 to disengage from the limiting slot 16, so that the inner ring 6 can be used to scrape off the dust remaining on the inner wall of the outer drill bit 4, and at the same time, let the fixing block 11 slide along the inner wall of the installation slot 22, so that the inner ring 6 is completely removed. When the pit surface is trimmed, the dust is collected on the inner wall of the collection bag. After completion, the inner ring 6 is reset and inserted into the inner wall of the outer drill bit 4, and at the same time, the bottom of the outer drill bit 4 is fit with the lower part of the inner ring 6, and in the process of inserting the inner ring 6, the support block 13 is folded to let it disengage from the collection bag. The slot 12 is inserted into the inner wall of the limiting slot 16, and the plug plate 15 is driven to be disengaged from the fixing slot 14. At the same time, the plug plate 15 is removed from the supporting block 13. At this time, when the inner ring 6 is reset upward, the mounting slot 22 is used to slide along the outer side of the plug rod 10, so that the plug rod 10 can be positioned. After the inner ring 6 is reset, the plug block 19 is driven to be inserted into the inner wall of the limiting slot 16. At this time, the plug plate 15 is reset and inserted into the inner wall of the slot 23, and the rubber clamp 18 is driven to be engaged with the inner wall of the clamping slot 17. Then, the pit repairing tool 5 can be installed between the two fixing screws 24 and the bottom of the inner ring 6, and then the outer drill bit 4 is rotated to trim the pit bottom, thereby improving the effect of the trial pit excavation, and then improving the detection effect.

[0045] Embodiment 5: On the basis of embodiment 4, in order to facilitate disassembly and separate replacement of the pit repairing tool 5, fixing screws 24 are inserted on both the front and rear sides of the bottom of the inner ring 6, and the pit repairing tool 5 is inserted at the bottom of the inner ring 6. The adjacent sides of the fixing screws 24 on the front and rear sides penetrate the inner ring 6 and are threadedly connected to the pit repairing tool 5. Therefore, the fixing screws 24 can be removed to replace the pit repairing tool 5, which is convenient for subsequent use.

[0046] First, unscrew the two fixing screws 24 and let them detach from the bottom of the inner ring 6, then remove the pit repairing tool 5. At this time, the pit repairing tool 5 can be replaced or disassembled. When resetting, the operator uses tools to install the pit repairing tool 5 to the bottom end of the inner ring 6, and at the same time, screw the fixing screws 24 on the left and right sides to install the pit repairing tool 5 and the inner ring 6 together for subsequent pit repair use.

[0047] Embodiment 6: Based on Embodiment 5, a method for using the automatic detection device for roadbed compaction is proposed, comprising the following steps:

[0048] Step 1, first use the wireless remote control device to start, and use the crawler vehicle 1 to drive the telescopic arm 2, the adjustment device 3 and the outer drill bit 4 to the target position, then select the appropriate drilling mode, at this time, unscrew the two fixing screws 24, and remove the pit repair tool 5 from the bottom of the inner ring 6, then start the micro telescopic rod 8 to drive the movable plate 9 to move downward, and push the inner drill bit 7 to extend downward. As the inner drill bit 7 moves downward, the fixed blocks 11 on both sides of the front and rear are gradually inserted downward into the inner wall of the insertion rod 10. When it is fully inserted, the outer drill bit 4 can be started to drive the inner drill bit 7 to break the central soil. After breaking, the collecting belt is hung on the outside of the left and right side plug plates 15, and then the micro telescopic rod 8 is started to drive the movable plate 9 in the inner ring 6. The inner wall reciprocates up and down, and drives the fixed columns 25 on its left and right sides to slide along the inner wall of the slide groove 1 20. When one end of the fixed column 25 is separated from the fitting groove 21, it will shrink to the inner wall of the slide groove 28, and push the connecting plate 27 to squeeze the elastic member 26. When the fixed column 25 moves down along the inner wall of the slide groove 1 20 to the inner wall of the next-level fitting groove 21, the elastic force of the elastic member 26 is used to drive the connecting plate 27 and push one end of the fixed column 25 to fit between the fitting groove 21. Through the reciprocating movement of the moving plate 9, the fixed columns 25 are driven to fit between the fitting grooves 21 one by one, so that the moving plate 9 vibrates, and the dust on the inner wall of the inner ring 6 is shaken off into the collection bag, thereby effectively preventing the dust from falling to the outside.

[0049] Step 2, when the support block 13 needs to be stored in the inner wall of the storage groove 12, the plug plates 15 on the left and right sides are respectively pulled out of the inner wall of the slot 23, and the rubber clamp 18 is driven to disengage from the clamping groove 17, and then the inner ring 6 is pulled downward to scrape along the inner wall of the outer drill bit 4, and the plug block 19 is driven to disengage from the limiting groove 16, so that the inner ring 6 is used to scrape off the dust remaining on the inner wall of the outer drill bit 4, and at the same time, the fixing block 11 is allowed to slide along the inner wall of the installation groove 22. When the inner ring 6 is completely removed, the plug plate 15 is reset, and the support block 13 is folded to the inner wall of the storage groove 12, so that the left and right side plug plates 15 are converted from a horizontal state to a vertical state, and then one side is driven to be plugged into the inner wall of the fixing groove 14, so that the support block 13 is stuck between the storage groove 12, and the outer drill bit 4 can be started to trim the pit surface;

[0050] Step 3, when the pit surface is finished, the dust is collected on the inner wall of the collection bag. After completion, the inner ring 6 is reset and inserted into the inner wall of the outer drill bit 4, and the bottom of the outer drill bit 4 is made to fit with the lower part of the inner ring 6. In the process of inserting the inner ring 6, the support block 13 is folded to disengage it from the storage groove 12, and the plug plate 15 is driven to disengage from the fixing groove 14. At the same time, the plug plate 15 is removed from the support block 13. At this time, when the inner ring 6 is reset upward, the installation groove 22 is used to move along the insertion rod 10. The outer side slides, so that the insertion rod 10 plays a positioning role. After the inner ring 6 is reset, it will drive the insertion block 19 to be inserted into the inner wall of the limiting groove 16. At this time, the insertion plate 15 is reset and inserted into the inner wall of the slot 23, and at the same time, the rubber clamp 18 is driven to engage with the inner wall of the clamping groove 17. Then, the pit repair tool 5 can be installed between the two fixing screws 24 and the bottom of the inner ring 6, and then the outer drill bit 4 is rotated to trim the pit bottom, thereby improving the effect of trial pit excavation and further improving the detection effect.

[0051] 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. An automatic detection device for roadbed compaction, comprising a crawler vehicle (1), a telescopic arm (2), an adjustment device (3), an outer drill bit (4), a pit repair tool (5) and an inner drill bit (7), wherein a micro telescopic rod (8) is installed on the inner top wall of the outer drill bit (4), and a movable plate (9) is installed on the output end of the micro telescopic rod (8), characterized in that: The inner wall of the outer drill bit (4) is plugged with an inner ring (6), and a slide groove (20) is provided on both the left and right sides of the inner ring (6), and a plurality of matching grooves (21) are provided on the inner wall of the slide groove (20). The inner wall of the movable plate (9) is plugged with fixed columns (25) on both the left and right sides of the inner wall, and the fixed columns (25) on both the left and right sides are plugged into the inner wall of the upper matching groove (21), and the movable plate (9) is slidably connected to the inner wall of the inner ring (6).

2. The automatic detection device for roadbed compaction according to claim 1 is characterized in that: Insertion rods (10) are installed on both the front and rear sides of the bottom of the movable plate (9), and fixing blocks (11) are installed on both the front and rear sides of the inner wall of the outer drill bit (4). The movable plate (9) is provided with a second slide groove (28) on both the left and right sides. A connecting plate (27) is installed on the inner wall of the second slide groove (28), and elastic members (26) are installed on the adjacent sides of the connecting plates (27) on the left and right sides.

3. The automatic detection device for roadbed compaction according to claim 2 is characterized in that: The adjacent sides of the elastic members (26) on the left and right sides are both installed on the inner wall of the second slide groove (28), and the separated sides of the connecting plates (27) on the left and right sides are both installed between the fixing columns (25).

4. The automatic detection device for roadbed compaction according to claim 1 is characterized in that: The lower left and right sides of the outer drill bit (4) are provided with receiving grooves (12), the upper side of the inner wall of the receiving groove (12) is provided with a fixing groove (14), the inner wall of the receiving groove (12) is hinged with a support block (13), the separated sides of the left and right support blocks (13) are plugged with plug plates (15), the adjacent sides of the left and right plug plates (15) are installed with rubber clamps (18), and the top of the support block (13) is provided with a card slot (17).

5. The automatic detection device for roadbed compaction according to claim 4 is characterized in that: The rubber clamp (18) is inserted into the inner wall of the clamping groove (17), and the rubber clamp (18) is in an extruded deformation state.

6. The automatic detection device for roadbed compaction according to claim 4 is characterized in that: The support blocks (13) on the left and right sides are symmetrically arranged, and when the support blocks (13) are hinged to the inner wall of the storage groove (12), the separated sides of the left and right plug plates (15) are both plugged into the inner wall of the fixing groove (14).

7. The automatic detection device for roadbed compaction according to claim 4 is characterized in that: The bottom of the support block (13) is provided with a limiting groove (16), the upper front and rear sides of the inner ring (6) are provided with mounting grooves (22), the lower left and right sides of the inner ring (6) are provided with insert blocks (19), and the middle of the insert block (19) is provided with a slot (23).

8. The automatic detection device for roadbed compaction according to claim 7 is characterized in that: The insert block (19) is inserted into the inner wall of the limiting groove (16), and the adjacent sides of the insert plates (15) on the left and right sides penetrate the support block (13) and are inserted into the inner wall of the slot (23), and the bottom wall of the installation groove (22) is fitted with the fixing block (11).

9. The automatic detection device for roadbed compaction according to claim 1 is characterized in that: The bottom of the inner ring (6) is plugged with fixing screws (24) on both the front and rear sides. The pit repairing tool (5) is plugged into the bottom of the inner ring (6). The fixing screws (24) on both the front and rear sides pass through the inner ring (6) and are threadedly connected to the pit repairing tool (5).

10. The automatic detection device for roadbed compaction according to claim 1, characterized in that: The fixed columns (25) on the left and right sides are symmetrically arranged, the inner drill bit (7) is arranged in the middle of the inner ring (6), and the inner drill bit (7) is installed at the bottom of the movable plate (9), and the bottom of the outer drill bit (4) is inserted into the lower part of the inner ring (6).

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