Duct piece wall back grouting compactness detection device

Abstract

The invention relates to a duct piece wall back grouting compactness detection device, and belongs to the technical field of structure detection, the device comprises a mounting base, a swing arm assembly, a telescopic arm assembly, a rotating arm assembly, a tail end detection assembly and a control assembly, the mounting base is fixed on a shield tunneling machine to provide a stable support foundation; the swing arm assembly is rotationally connected with the mounting base, and allows the device to swing within a certain range, so that the detection device is alongside in a non-operation period, and passage of a transport vehicle is prevented from being hindered; the telescopic arm assembly is in sliding connection with the swing arm assembly, and the position is fixed by a first fastening bolt to realize a telescopic function so as to adjust the distance between the detection device and the duct piece; the rotating arm assembly is driven by a rotating motor, and 360-degree all-dimensional dead-corner-free detection is achieved. Besides, the first adjusting screw rod and the second adjusting screw rod respectively adjust the positions of the telescopic arm assembly and the telescopic push rod, so that the detection device flexibly adapts to tunnel segments of different sizes, and the universality and practicability of detection are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of structure detection, and in particular to a device for detecting the density of post-grouting of a pipe segment wall. Background Art

[0002] In the process of rapid development of urban rail transit, especially the construction of underground parts has made great progress, shield tunnel engineering has ushered in an opportunity for rapid development, and shield machines have become the most critical construction equipment in subway construction. During the shield construction process, if the gap between the middle and tail of the shield is not filled in time, the soil stress will be released rapidly, causing a series of hazards. Specifically, the sudden release of soil stress may cause deformation and settlement of the surrounding soil, which in turn affects the stability of the tunnel structure and the safety of surrounding existing buildings, underground pipelines and other facilities. In order to effectively eliminate these hazards, it is necessary to timely grout the gaps behind the segments during shield construction, and to conduct inspections on the density and quality of the grouting.

[0003] As far as the current domestic situation is concerned, there are two main forms of quality inspection of the density of grouting behind the shield wall. One form is to carry the quality inspection device on the shield. However, due to the structural and design characteristics of the shield equipment, and the differences in geometric dimensions and spatial layout of tunnels with different pipe diameters, the inspection device carried on the shield is difficult to flexibly adjust according to different pipe diameters, and this inspection method cannot achieve 360° all-round inspection, which means that there may be blind spots in the inspection process, and it is impossible to obtain comprehensive and accurate information on the density of grouting. Another form is to carry the quality inspection device on the intelligent AGV chassis, but the research and development, manufacturing of the intelligent AGV chassis itself, and the adaptation of the inspection device require a lot of money; at the same time, the intelligent control requirements of the chassis are very high, and complex technology and control systems are needed to support it, which increases the difficulty and cost of the entire inspection device.

[0004] In view of the above situation, there is an urgent need to design a segment wall grouting density detection device that can meet specific needs, has 360° detection capability, fully covers the grouting area behind the segment, and has low production cost. Summary of the invention

[0005] In view of the deficiencies mentioned in the above technical background, the purpose of the present invention is to provide a segment wall back-grouting density detection device, which has the advantages of being able to achieve 360° all-round detection, being suitable for tunnels of different diameters, and having low manufacturing cost.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A device for detecting the compactness of post - grouting behind segment lining, comprising a mounting base, a swing arm assembly, a telescopic arm assembly, a rotating arm assembly, a terminal detection assembly and a control assembly;

[0008] One end of the mounting base is fixedly installed on the tail car of the shield machine, and the other end is rotatably connected to the swing arm assembly. The swing arm assembly is driven to rotate relative to the mounting base by a swing arm pushing assembly electrically connected to the control assembly. One end of the swing arm pushing assembly is connected to the mounting base, and the other end is connected to the swing arm assembly;

[0009] A through - hole and a first adjusting screw rod are provided at one end of the swing arm assembly away from the mounting base. A number of first fastening bolts are provided on the side wall of the through - hole. The telescopic arm assembly is inserted into the through - hole and fixed by the first fastening bolts. The first adjusting screw rod is connected to a screw rod push plate fixedly arranged on the telescopic arm assembly. By rotating the first adjusting screw rod, the position of the telescopic arm assembly relative to the swing arm assembly is adjusted;

[0010] The end of the telescopic arm assembly is rotatably connected to the rotating arm assembly. A rotating motor electrically connected to the control assembly is provided on the telescopic arm assembly for driving the rotating arm assembly to rotate relative to the telescopic arm assembly. The terminal detection assembly is provided at the free end of the rotating arm assembly, and the terminal detection assembly is electrically connected to the control assembly;

[0011] The control assembly is used for the automatic control of the device for detecting the compactness of post - grouting behind segment lining.

[0012] As a preferred technical solution of the present invention, the swing arm pushing assembly includes a first mounting block, a second mounting block and a first telescopic push rod electrically connected to the control assembly. The two ends of the first telescopic push rod are respectively connected to the first mounting block and the second mounting block. The first mounting block is fixedly installed on the mounting base, and the second mounting block is fixedly installed on the swing arm assembly.

[0013] As a preferred technical solution of the present invention, the first adjusting screw rod is in threaded connection with the screw rod push plate. By rotating the first adjusting screw rod, the position of the screw rod push plate on the first adjusting screw rod is adjusted.

[0014] As a preferred technical solution of the present invention, the rotating arm assembly includes a rotating arm, a second adjusting screw rod, a second telescopic push rod, and a second fastening bolt. One end of the rotating arm is rotatably connected to the telescopic arm assembly, and the other end is slidably connected to the second telescopic push rod. The second telescopic push rod is connected to the second adjusting screw rod. By rotating the second adjusting screw rod, the position of the second telescopic push rod relative to the rotating arm is adjusted. One end of the rotating arm close to the second telescopic push rod is provided with the second fastening bolt for fixing the position of the second telescopic push rod relative to the rotating arm.

[0015] As a preferred technical solution of the present invention, the second telescopic push rod and the second adjusting screw rod are sleeved inside the rotating arm. The second telescopic push rod is threadedly connected to the second adjusting screw rod. By rotating the second adjusting screw rod, the position of the second telescopic push rod relative to the rotating arm is adjusted.

[0016] As a preferred technical solution of the present invention, the end detection assembly includes a flexible protection device and a ground penetrating radar. The flexible protection device includes an upper mounting plate, a lower mounting plate, a plurality of springs, and a plurality of guide rails. The lower mounting plate is fixedly installed at the free end of the rotating arm assembly. The upper mounting plate is fixedly connected to the ground penetrating radar. The upper mounting plate and the lower mounting plate are connected by a plurality of the springs and a plurality of the guide rails to provide guidance and elastic support for the up and down movement of the upper mounting plate relative to the lower mounting plate. The ground penetrating radar is provided with a safety touch edge electrically connected to the control assembly at the geological contact end.

[0017] As a preferred technical solution of the present invention, the segment backfilling grout density detection device further includes a joint telescopic assembly, which is arranged between the rotating arm assembly and the end detection assembly.

[0018] As a preferred technical solution of the present invention, the joint telescopic assembly includes three or more joints.

[0019] As a preferred technical solution of the present invention, a displacement detection device is further arranged between the upper mounting plate and the lower mounting plate for detecting the distance between the upper mounting plate and the lower mounting plate. The displacement detection device includes a sensor installed on the upper mounting plate and an induction piece installed on the lower mounting plate. The safety touch edge is in a ring structure and is sleeved on the outer periphery of the geological contact end of the ground penetrating radar.

[0020] In summary, the beneficial effects of the present invention are:

[0021] Through the coordinated work of the swing arm assembly, telescopic arm assembly and rotating arm assembly, the present invention realizes 360° all-round detection of the grouting density behind the segment wall, effectively solving the problem of detection blind spots existing in the prior art. The device is fixed on the tail car of the shield machine through the mounting base and moves forward along with the shield machine in the tunneling direction, significantly reducing the structural and control complexity during the movement of the detection device. At the same time, the tail car of the shield machine provides a stable mounting foundation for the device.

[0022] In addition, through the design of the first adjusting screw rod and the first fastening bolt, the present invention realizes the position adjustment of the telescopic arm assembly, increases the flexibility of detection, enables the detection device to adapt to segments of tunnels with different sizes, and effectively solves the problems of high intelligent control requirements and excessive manufacturing costs of the existing detection devices for the grouting density behind the segment wall.

[0023] The flexible protection device equipped with the end detection component provides a guiding and elastic support function for the ground penetrating radar, effectively buffering the impact force generated when the ground penetrating radar contacts the segment during the detection process, and improving the stability and durability of the detection device. This design enables the ground penetrating radar to flexibly cope with different geological conditions during the detection process, avoids detection errors caused by uneven geology, and ensures the accuracy and reliability of the detection results. Description of the Drawings

[0024] Figure 1 is the installation schematic diagram of a detection device for the grouting density behind the segment wall of the present invention;

[0025] Figure 2 is the schematic diagram of the detection device for the grouting density behind the segment wall of the present invention;

[0026] Figure 3 is the schematic diagram of the end detection component of the present invention;

[0027] 1 - Tail car of the shield, 2 - Segment, 3 - Detection device for the grouting density behind the segment wall, 31 - Mounting base, 32 - Swing arm assembly, 321 - Through hole, 322 - First adjusting screw rod, 323 - First fastening bolt, 33 - Telescopic arm assembly, 331 - Screw rod push plate, 34 - Rotating arm assembly, 341 - Rotating arm, 342 - Second adjusting screw rod, 343 - Second telescopic push rod, 344 - Second fastening bolt, 35 - End detection component, 351 - Flexible protection device, 352 - Ground penetrating radar, 353 - Upper mounting plate, 354 - Lower mounting plate, 355 - Spring, 356 - Guide rail, 357 - Safety edge, 358 - Displacement detection device, 3581 - Sensor, 3582 - Inductive sheet, 36 - Swing arm pushing component, 361 - First mounting block, 362 - Second mounting block, 363 - First telescopic push rod, 37 - Rotating motor, 38 - Joint telescopic component. Detailed Embodiments

[0028] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments given here are only used to illustrate and explain the present invention and cannot be used to limit the present invention.

[0029] It should be noted that many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention may have other embodiments and variations, and therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0030] The design purpose of this application is to solve the technical problem of detecting the grouting density behind the segment 2 wall. Specifically, the existing detection methods have problems such as detection blind spots, difficulty in flexible adjustment, and high cost.

[0031] As Figures 1 to 3 shown, a device 3 for detecting the grouting density behind the segment wall of the present invention includes a mounting base 31, a swing arm assembly 32, a telescopic arm assembly 33, a rotating arm assembly 34, a terminal detection assembly 35, and a control assembly (not shown in the figure);

[0032] One end of the mounting base 31 is fixedly installed on the tail car 1 of the shield machine, and the other end is rotatably connected to the swing arm assembly 32. The swing arm assembly 32 is driven to rotate relative to the mounting base 31 by a swing arm pushing assembly 36 electrically connected to the control assembly. One end of the swing arm pushing assembly 36 is connected to the mounting base 31, and the other end is connected to the swing arm assembly 32;

[0033] A through hole 321 and a first adjusting screw rod 322 are provided at the end of the swing arm assembly 32 away from the mounting base 31. A plurality of first fastening bolts 323 are provided on the side wall of the through hole 321. The telescopic arm assembly 33 is inserted into the through hole 321 and fixed by the first fastening bolts 323. The first adjusting screw rod 322 is connected to a screw rod push plate 331 provided on the telescopic arm assembly 33. By rotating the first adjusting screw rod 322, the position of the telescopic arm assembly 33 relative to the swing arm assembly 32 is adjusted;

[0034] The end of the telescopic arm assembly 33 is rotatably connected to the rotating arm assembly 34. A rotating motor 37 electrically connected to the control assembly is provided on the telescopic arm assembly 34 for driving the rotating arm assembly 34 to rotate relative to the telescopic arm assembly 34. A terminal detection assembly 35 is provided at the free end of the rotating arm assembly 34, and the terminal detection assembly 35 is electrically connected to the control assembly;

[0035] The control assembly is used for the automatic control of the device for detecting the grouting density behind the segment 2 wall.

[0036] The mounting base 31 is fixed on the trailing car 1 of the shield machine, providing a stable mounting foundation; the swing arm assembly 32 can be driven by the swing arm driving assembly 36 and can flexibly adjust the angle, so that the segment backfilling grout density detection device 3 can be placed aside during non-operation to avoid obstructing the passage of the transport vehicle; the telescopic arm assembly 33 is connected to the swing arm assembly 32 and can be detected at different positions by means of the adjustment function of the first adjustment screw rod 322; the rotating arm assembly 34 is connected to the telescopic arm assembly 33, and the rotation of the rotating arm assembly 34 and the end detection assembly 35 is realized by driving the rotating motor 37, so as to realize 360° omnidirectional detection and ensure that there is no detection blind area; the control assembly realizes the automatic control of the whole device; through the mutual cooperation of each component, the comprehensive detection of the segment backfilling grout density is realized, the problem of the detection blind area is solved, and the flexibility and accuracy of the detection are improved.

[0037] As a preferred embodiment of the present invention, the swing arm driving assembly 36 includes a first mounting block 361, a second mounting block 362 and a first telescopic push rod 363 electrically connected to the control assembly. The two ends of the first telescopic push rod 363 are respectively connected to the first mounting block 361 and the second mounting block 362. The first mounting block 361 is fixedly installed on the mounting base 31, and the second mounting block 362 is fixedly installed on the swing arm assembly 32.

[0038] Through the telescopic movement of the first telescopic push rod 363, the driving and position adjustment of the swing arm assembly 32 are realized, so that the swing arm assembly 32 can accurately move and position according to the instructions of the control assembly, thus solving the problem of how to realize the accurate driving and position adjustment of the swing arm assembly 32. The first mounting block 361 and the second mounting block 362 can be made of high-strength alloy materials to ensure sufficient strength and durability during use. The first telescopic push rod 363 can be driven by a motor, and the motor is controlled by the control assembly to realize accurate telescopic movement. In addition, the first telescopic push rod 363 can be equipped with a position sensor 3581 to monitor its telescopic state in real time and further improve the positioning accuracy of the swing arm assembly 32.

[0039] As a preferred embodiment of the present invention, the first adjustment screw rod 322 is threadedly connected to the screw rod push plate 331, and the position of the screw rod push plate 331 on the first adjustment screw rod 322 is adjusted by rotating the first adjustment screw rod 322.

[0040] The first adjustment screw rod 322 is threadedly connected to the screw rod push plate 331. Rotating the first adjustment screw rod 322 makes the screw rod push plate 331 move axially along the first adjustment screw rod 322. By controlling the number of rotation turns and the rotation direction of the first adjustment screw rod 322, the distance between the screw rod push plate 331 and the swing arm assembly 32 can be adjusted, and then the telescopic adjustment of the telescopic arm assembly relative to the swing arm assembly 32 can be driven.

[0041] As a preferred embodiment, scale marks can be provided on the outer surface of the first adjusting screw rod 322 to facilitate precise adjustment by the operator according to needs. To prevent loosening or misoperation during the adjustment process, a locking device can be provided on the adjusting screw rod to ensure stability after adjustment.

[0042] As a preferred embodiment of the present invention, the rotating arm assembly 34 includes a rotating arm 341, a second adjusting screw rod 342, a second telescopic push rod 343, and a second fastening bolt 344. One end of the rotating arm 341 is rotatably connected to the telescopic arm assembly 33, and the other end is slidably connected to the second telescopic push rod 343. The second telescopic push rod 343 is connected to the second adjusting screw rod 342. By rotating the second adjusting screw rod 342, the position of the second telescopic push rod 343 relative to the rotating arm 341 can be adjusted. A second fastening bolt 344 is provided at one end of the rotating arm 341 close to the second telescopic push rod 343 for fixing the position of the second telescopic push rod 343 relative to the rotating arm 341.

[0043] As a preferred embodiment of the present invention, the second telescopic push rod 343 and the second adjusting screw rod 342 are sleeved inside the rotating arm 341. The second telescopic push rod 343 is threadedly connected to the second adjusting screw rod 342. By rotating the second adjusting screw rod 342, the position of the second telescopic push rod 343 relative to the rotating arm 341 can be adjusted.

[0044] Precisely controlling the position of the second telescopic push rod 343 can thus achieve precise adjustment of the position of the detection device, which helps to comprehensively cover the grouting area behind the segment 2 and ensure the accuracy and comprehensiveness of the detection.

[0045] As a preferred embodiment of the present invention, the end detection assembly 35 includes a flexible protection device 351 and a ground penetrating radar 352. The flexible protection device 351 includes an upper mounting plate 353, a lower mounting plate 354, a plurality of springs 355, and a plurality of guide rails 356. The lower mounting plate 354 is fixedly installed at the free end of the rotating arm assembly 34. The upper mounting plate 353 is fixedly connected to the ground penetrating radar 352. The upper mounting plate 353 and the lower mounting plate 354 are connected by a plurality of springs 355 and a plurality of guide rails 356 to provide guidance and elastic support for the up and down movement of the upper mounting plate 353 relative to the lower mounting plate 354. A safety touch edge 357 electrically connected to the control assembly is provided at the geological contact end of the ground penetrating radar 352.

[0046] The flexible protection device 351, through the combination of the upper mounting plate 353, the lower mounting plate 354, the spring 355 and the guide rail 356, enables the upper mounting plate 353 to move up and down relative to the lower mounting plate 354, thus providing the functions of guiding and elastic support. This design can effectively buffer the impact force generated when the ground penetrating radar 352 contacts the segment 2 during the detection process, improving the stability and durability of the detection device. The ground penetrating radar 352 is provided with a safety edge 357 at the geological contact end, which can protect the ground penetrating radar 352 during the detection process and prevent it from being damaged. When the segment backfill grouting density detection device 3 makes a circular motion, the safety edge 357 on the end detection component 35 touches an obstacle, and a transmission obstacle signal will be sent to the control component. After receiving the obstacle signal, the control component immediately pauses the circular motion of the segment backfill grouting density detection device 3 to prevent further collision from causing more serious damage to the detection device; at the same time, the motion trajectory of the detection device is re-planned to avoid the area where the obstacle is located, ensuring that the detection work can continue on the premise of safety; after re-planning the motion trajectory, the control component will send instructions to each execution component of the segment backfill grouting density detection device 3 to make it resume motion according to the new trajectory and continue the detection work of the segment backfill grouting density. In addition, the control component records and stores the obstacle information for subsequent fault troubleshooting, safety assessment and optimization of the detection route. Through the above design, the problems of possible detection blind spots and the inability to comprehensively and accurately obtain grouting density information during the detection process of the segment backfill grouting density detection device are solved.

[0047] The upper mounting plate 353 and the lower mounting plate 354 of the flexible protection device 351 are connected by springs 355 and guide rails 356. The springs 355 provide elastic support for the upper mounting plate 353 relative to the lower mounting plate 354, and the guide rails 356 provide guidance for the up and down movement, enabling the ground penetrating radar 352 to flexibly cope with different geological conditions during the detection process and avoiding detection errors caused by uneven geology. The safety touch edge 357, as a protective measure, surrounds the geological contact end of the ground penetrating radar 352 and can prevent the ground penetrating radar 352 from directly contacting the hard geology during the detection process, thereby protecting the integrity and functionality of the ground penetrating radar 352. The springs 355 in the flexible protection device 351 can be selected with different stiffnesses according to specific detection requirements to adapt to different detection environments and requirements. The material and structure of the guide rails 356 can also be adjusted according to the actual situation to ensure the stability of the guidance and movement. In addition, the material of the safety touch edge 357 can be selected as a soft and durable material to provide better protection. The end detection component 35 of the present application can effectively avoid detection blind spots during the detection process and comprehensively and accurately obtain the information of the grouting density. Compared with the prior art, the flexible protection device 351 of the present application is reasonably designed, can improve the stability and durability of the detection device, protect the ground penetrating radar 352 at the same time, and reduce the risks and costs during the detection process.

[0048] As a preferred embodiment of the present invention, the segment back grouting density detection device further includes a joint telescopic component 38, and the joint telescopic component 38 is arranged between the rotating arm component 34 and the end detection component 35.

[0049] As a preferred embodiment of the present invention, the joint telescopic component 38 includes three or more joints.

[0050] The joint telescopic component 38 plays a key role in solving the connection problem between the rotating arm component 34 and the end detection component 35. By setting the joint telescopic component 38, flexible connection and adjustment between the rotating arm component 34 and the end detection component 35 can be achieved, thereby improving the adaptability and detection range of the detection device and ensuring that the detection device can work normally in various complex working environments. The joint telescopic component 38 includes three or more joints. By increasing the number of joints, the joint telescopic component 38 can be adjusted within a larger range, thereby improving the adaptability and flexibility of the detection device in tunnels with different pipe diameters.

[0051] As a preferred embodiment of the present invention, a displacement detection device 358 is further provided between the upper mounting plate 353 and the lower mounting plate 354 for detecting the distance therebetween. The displacement detection device 358 includes a sensor 3581 mounted on the upper mounting plate 353 and an induction sheet 3582 mounted on the lower mounting plate 354; the safety edge 357 is in a ring structure and sleeved on the outer periphery of the ground penetrating radar 352 and the geological contact end.

[0052] When the displacement detection device 358 detects that the distance between the upper mounting plate 353 and the lower mounting plate 354 is too small, a corresponding warning and protection mechanism is triggered. On the one hand, the displacement detection device 358 will send a signal to the control component. After receiving the signal, the control component will stop the operation of the relevant components to avoid damage caused by collision or excessive extrusion between the upper mounting plate 353 and the lower mounting plate 354; on the other hand, the control component reminds the operator to pay attention to this abnormal situation, and the operator checks the equipment according to the information to see if there are component looseness, structural deformation or other fault reasons leading to the abnormal reduction of the distance between the upper mounting plate 353 and the lower mounting plate 354.

[0053] The implementation methods of the displacement detection device 358 include but are not limited to the following: One implementation method is to use a combination of an inductive sensor 3581 and an induction sheet 3582 to measure the distance between the upper mounting plate 353 and the lower mounting plate 354 through inductance change. Another implementation method is to use a photoelectric sensor 3581 to detect displacement through beam occlusion or reflection. In addition, an ultrasonic sensor 3581 can also be used to measure the distance through the time difference of ultrasonic transmission.

[0054] The working principle of the segment backfill grouting density detection device 3 of the present invention:

[0055] The installation base 31 of the segment back grouting density detection device 3 is fixedly installed on the trailing car 1 of the shield machine. When the trailing car 1 of the shield machine moves forward, the detection device starts to detect the back grouting density of the shield segment 2. The detection device of the present invention can achieve multi-directional detection. First, by adjusting the length of the swing arm pushing component 36, the swing arm component 32 is driven to rotate a certain angle relative to the installation base 31, and detection in different directions can be achieved. Then, with the help of the first adjusting screw 322, the screw push plate 331 is driven to move along the axial direction of the first adjusting screw 322. During this process, the telescopic arm component 33 will perform telescopic adjustment relative to the swing arm component 32. After adjusting to the appropriate position, the telescopic arm component 33 is fixed with the first fastening bolt 323. Then, the rotating motor 37 on the telescopic arm component 33 drives the rotating arm 34 component to rotate a certain angle relative to the telescopic arm component 33 according to the requirements of the detection point, completing the adjustment of the device for a certain detection point. In addition, during the detection process, when the diameter of the detection device cannot reach the detection point, the second adjusting screw 342 can be used to adjust the position of the second telescopic push rod 343 relative to the rotating arm 341, so that the end detection component 35 approaches the detection point. Moreover, the position of the end detection component 35 can also be adjusted through the joint telescopic component 38 between the end detection component 35 and the rotating arm component 34, greatly improving the adaptability of the detection device and expanding its detection range.

[0056] It should be understood that the above embodiments are one or more embodiments of the present invention. Based on the present invention, there are many other embodiments and their deformations. Without making pioneering innovations, the deformations and modifications made by those of ordinary skill in the industry through the present invention all fall within the protection scope of the present invention.

Claims

1. A device for detecting the density of post-grouting of a pipe segment wall, characterized in that: It includes a mounting base, a swing arm assembly, a telescopic arm assembly, a rotating arm assembly, an end detection assembly and a control assembly; One end of the mounting base is fixedly mounted on the tail vehicle of the shield machine, and the other end is rotatably connected to the swing arm assembly. The swing arm assembly is driven to rotate relative to the mounting base by a swing arm pushing assembly electrically connected to the control assembly. One end of the swing arm pushing assembly is connected to the mounting base, and the other end is connected to the swing arm assembly. A through hole and a first adjusting screw are provided at one end of the swing arm assembly away from the mounting base, a plurality of first fastening bolts are provided on the side wall of the through hole, the telescopic arm assembly is inserted into the through hole and fixed by the first fastening bolts, the first adjusting screw is connected to a screw push plate fixed on the telescopic arm assembly, and the position of the telescopic arm assembly relative to the swing arm assembly is adjusted by rotating the first adjusting screw; The end of the telescopic arm assembly is rotatably connected to the rotating arm assembly, the telescopic arm assembly is provided with a rotating motor electrically connected to the control assembly, and is used to drive the rotating arm assembly to rotate relative to the telescopic arm assembly, and the free end of the rotating arm assembly is provided with the end detection assembly, and the end detection assembly is electrically connected to the control assembly; The control component is used for automatic control of the segment wall post-grouting density detection device.

2. A segment wall post-grouting density detection device according to claim 1, characterized in that: The swing arm pushing assembly includes a first mounting block, a second mounting block and a first telescopic push rod electrically connected to the control assembly, the two ends of the first telescopic push rod are respectively connected to the first mounting block and the second mounting block, the first mounting block is fixedly mounted on the mounting base, and the second mounting block is fixedly mounted on the swing arm assembly.

3. A segment wall post-grouting density detection device according to claim 1, characterized in that: The first adjusting screw is threadably connected to the screw push plate, and the position of the screw push plate on the first adjusting screw is adjusted by rotating the first adjusting screw.

4. A segment wall post-grouting density detection device according to any one of claims 1 or 2, characterized in that: The rotating arm assembly includes a rotating arm, a second adjusting screw, a second telescopic push rod and a second fastening bolt. One end of the rotating arm is rotatably connected to the telescopic arm assembly, and the other end is slidably connected to the second telescopic push rod. The second telescopic push rod is connected to the second adjusting screw. The position of the second telescopic push rod relative to the rotating arm is adjusted by rotating the second adjusting screw. The second fastening bolt is provided at one end of the rotating arm close to the second telescopic push rod for fixing the position of the second telescopic push rod relative to the rotating arm.

5. A segment wall post-grouting density detection device according to claim 4, characterized in that: The second telescopic push rod and the second adjusting screw rod are sleeved in the rotating arm, the second telescopic push rod is threadedly connected with the second adjusting screw rod, and the position of the second telescopic push rod relative to the rotating arm is adjusted by rotating the second adjusting screw rod.

6. A segment wall post-grouting density detection device according to claim 1, characterized in that: The end detection assembly includes a flexible protection device and a geological radar instrument. The flexible protection device includes an upper mounting plate, a lower mounting plate, a plurality of springs and a plurality of guide rails. The lower mounting plate is fixedly mounted on the free end of the rotating arm assembly. The upper mounting plate is fixedly connected to the geological radar instrument. The upper mounting plate and the lower mounting plate are connected by a plurality of the springs and a plurality of the guide rails to provide guidance and elastic support for the upper mounting plate to move up and down relative to the lower mounting plate. The geological radar instrument is provided with a safety touch edge electrically connected to the control assembly at the geological contact end.

7. A segment wall post-grouting density detection device according to claim 6, characterized in that: The segment wall post-grouting density detection device also includes a joint telescopic component, and the joint telescopic component is arranged between the rotating arm component and the end detection component.

8. A segment wall post-grouting density detection device according to claim 7, characterized in that: The joint telescopic assembly includes three or more joints.

9. A segment wall post-grouting density detection device according to claim 6, characterized in that: A displacement detection device is also provided between the upper mounting plate and the lower mounting plate for detecting the distance between the upper mounting plate and the lower mounting plate. The displacement detection device comprises a sensor installed on the upper mounting plate and a sensing sheet installed on the lower mounting plate. The safety touch edge is an annular structure and is sleeved on the outer periphery of the geological radar instrument and the geological contact end.

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