A testing device for segment damage of subway shield tunnels

Abstract

The present invention provides a damage testing device for subway shield tunnel segments, which relates to the technical field of shield segments. A damage testing device for subway shield tunnel segments includes a support and assembly member. The support and assembly member includes a rotating special-shaped seat. A driving and rotating mechanism is installed at the lower end of the rotating special-shaped seat, and a closely attached flaw detection mechanism is installed at the upper end of the driving and rotating mechanism. The driving and rotating mechanism can clean the surface of the segments in the tunnel during the process of driving the rotating special-shaped seat to rotate. The closely attached flaw detection mechanism includes an X-ray machine; the driving and rotating mechanism includes a first motor, the first motor is installed at the lower end of the rotating special-shaped seat, the output shaft of the first motor is fixedly connected to a rotating shaft, one end of the rotating shaft is fixedly connected to a driving gear, and the driving gear is meshed with a gear ring on the outside; the closely attached flaw detection mechanism includes a lifting bracket, and second side sliding rails are slidably installed in the sliding grooves on both sides of the lifting bracket, and support seats are fixedly connected to the lower ends of the second side sliding rails on both sides.

Description

Technical Field

[0001] The present invention relates to the technical field of shield segments, and particularly to a damage testing device for subway shield tunnel segments. Background Art

[0002] Shield segments are the main assembled components in shield construction, and are the innermost barrier of the tunnel, bearing the functions of resisting soil pressure, groundwater pressure and some special loads. Shield segments are the permanent lining structure of shield tunnels. The quality of shield segments is directly related to the overall quality and safety of the tunnel, affecting the waterproof performance and durability of the tunnel. When shield segments are used for a long time, the inside of the shield segments will be corroded, causing damage to the inside of the shield segments. In order to extend the life of shield segments, damage detection equipment is needed to detect the shield segments.

[0003] At present, when using damage detection equipment to detect shield segments in the prior art, most of them are X-ray penetration detections. Among them, X-rays will generate a large amount of radiation, which affects the physical health of tunnel construction workers. In addition, dust and soil will adhere to the surface of the shield segments inside the tunnel. When using X-rays to detect the shield segments, the dust and soil will affect the accuracy of damage detection, thus affecting the service life of the shield segments. Therefore, the present invention proposes a damage testing device for subway shield tunnel segments. Summary of the Invention

[0004] The purpose of the present invention is to solve the disadvantages that dust and soil will adhere to the surface of the shield segments inside the tunnel in the prior art, and the dust and soil will affect the accuracy of damage detection when using X-ray detection, and X-rays will generate a large amount of radiation, which affects the physical health of tunnel construction workers.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solution: A damage testing device for subway shield tunnel segments, including a support and assembly member, the support and assembly member includes a rotating special-shaped seat, a driving and rotating mechanism is installed at the lower end of the rotating special-shaped seat, a close-proximity flaw detection mechanism is installed at the upper end of the driving and rotating mechanism, the driving and rotating mechanism can clean the surface of the segments in the tunnel during the process of driving the rotating special-shaped seat to rotate, the close-proximity flaw detection mechanism includes an X-ray machine, and the close-proximity flaw detection mechanism can perform anti-radiation treatment on the radiation generated by the X-ray machine during the flaw detection process; the driving and rotating mechanism includes a first motor, the first motor is installed at the lower end of the rotating special-shaped seat, the output shaft of the first motor is fixedly connected with a rotating shaft, one end of the rotating shaft is fixedly connected with a driving gear, and the driving gear is meshed with a gear ring on the outside; the close-proximity flaw detection mechanism includes a lifting bracket, sliding grooves are arranged on both sides of the lifting bracket, second side slide rails are slidably installed in the sliding grooves on both sides of the lifting bracket, the lower ends of the second side slide rails on both sides are fixedly connected with a support seat, and the support seat is fixedly connected to the upper end of one side surface of the rotating special-shaped seat.

[0006] In at least some embodiments, a loading tray is provided on one side of the rotating special-shaped seat. An arc-shaped slide rail is fixedly connected to the edge of the surface of the loading tray. The rotating special-shaped seat is mounted on the arc-shaped slide rail. A gear ring is fixedly connected to the surface of the loading tray, and the gear ring is located inside the arc-shaped slide rail.

[0007] In at least some embodiments, a first connecting seat is fixedly connected to the surface of the other end of the loading tray. A support column is fixedly connected to one side of the first connecting seat. An installation seat is fixedly connected to one side of the support column. The installation seat is provided with a plurality of uniformly distributed installation screw holes. An upper chute is provided on one side of the upper surface of the rotating special-shaped seat, and limiting grooves are opened at the edges of both ends of the upper surface of the rotating special-shaped seat.

[0008] In at least some embodiments, a turntable is provided above the rotating shaft. A central shaft is fixedly connected to the center of the turntable. The central shaft is rotatably installed on one side surface of the rotating special-shaped seat. Sprockets are fixedly sleeved on the central shaft and the rotating shaft, and a chain is drivingly installed on the two sprockets.

[0009] In at least some embodiments, a mounting member is fixedly connected to the edge of one side surface of the turntable. A transmission rod is rotatably installed on the mounting member. A first slider is rotatably installed at one end of the transmission rod. The first slider is installed in a first side slide rail, and the first side slide rail is fixedly connected to one side surface of the rotating special-shaped seat.

[0010] In at least some embodiments, a lifting plate is fixedly connected to the upper surface of the first slider. First toothed plates are fixedly connected to both side surfaces of the lifting plate. The first toothed plates are meshed with a driven gear. A connecting shaft is fixedly connected to the center of the driven gear. One end of the connecting shaft is rotatably installed on one side surface of the rotating special-shaped seat.

[0011] In at least some embodiments, a second connecting rod is fixedly connected to one end of each connecting shaft. A first connecting rod is rotatably installed at the upper end of the second connecting rod. A second connecting seat is rotatably installed at the upper end of the first connecting rod. The first connecting rod is located in the limiting groove. A cleaning brush plate is fixedly connected to the upper end of the second connecting seat. A second slider is fixedly connected to one side of the lower surface of the cleaning brush plate. The second slider is installed in the upper chute.

[0012] In at least some embodiments, a second motor is fixedly connected to the upper surface of the support base. The output shaft of the second motor is fixedly connected to a driving screw rod. The driving screw rod is meshed with a threaded lifting rod. The threaded lifting rod is fixedly connected to the lower surface of the lifting bracket. The lifting bracket is arranged in a U shape. Four rotating rods are rotatably installed at the four corners of the inner wall of the lifting bracket. A mating gear is fixedly sleeved on the surface of each rotating rod. One side of each mating gear is meshed with a second toothed plate through teeth. One side of the second toothed plate is fixedly connected to a backing plate. The backing plate is fixedly connected to one side surface of the rotating special-shaped seat.

[0013] In at least some embodiments, one end of each rotating rod is fixedly connected to a third connecting rod. One end of each third connecting rod is rotatably installed with an extension shaft. A fixed seat is rotatably connected between the extension shafts. An X-ray machine is fixedly connected to one side of the fixed seat. A protective cover is arranged outside the output end of the X-ray machine. The protective cover is made of lead. A groove is arranged on one side of the protective cover. Limiting blocks are fixedly connected to both sides of the inner wall of the groove. A limiting rod is installed on each limiting block. The limiting rod is fixedly connected to both ends of the upper extension shaft.

[0014] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0015] 1. In the present invention, the first motor drives the driving gear to cooperate with the gear ring to drive the rotating special-shaped seat to rotate along the arc-shaped slide rail. During the rotation, the linkage turntable and the lifting plate drive the cleaning brush plate to make a reciprocating motion from the center point to both sides. Through the rotation of the special-shaped rotating seat and the movement of the cleaning brush plate, the shield segments in the tunnel can be cleaned, and the dust and soil on their surfaces can be cleaned, which is convenient for subsequent X-ray flaw detection of the shield segments. At the same time, flaw detection of shield segments at different angles can also be achieved through rotation. On the one hand, the linkage practicability of the device is enhanced, and on the other hand, the guiding and automatic cleaning functions are realized through a single motor.

[0016] 2. In the present invention, the second motor drives the lifting bracket to move up and down. During the movement, it cooperates with the second toothed plate to drive the X-ray machine to rotate around the rotating rod, achieving the extension and retraction of the X-ray machine. When the X-ray machine moves, it can also drive the protective cover to move up and down along the X-ray machine in cooperation with the limiting rod. When the X-ray machine works, the protective cover can isolate the generated X-rays to prevent radiation from harming the safety and health of construction workers. The second motor realizes the integration of flaw detection and radiation protection automatically, optimizes the construction environment in the tunnel, improves the safety of the equipment, and is convenient for subsequent construction workers to carry out tunnel construction work. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic three-dimensional view of one side structure of the overall subway shield tunnel segment damage testing equipment proposed by the present invention;

[0018] Figure 2 This is a schematic three-dimensional view of the other side of the overall structure of a segment damage testing device for subway shield tunnels proposed by the present invention;

[0019] Figure 3 This is a schematic three-dimensional view of one side of the overall structure of the support and assembly components of a segment damage testing device for subway shield tunnels proposed by the present invention;

[0020] Figure 4 This is a schematic three-dimensional view of the other side of the overall structure of the support and assembly components of a segment damage testing device for subway shield tunnels proposed by the present invention;

[0021] Figure 5 This is a schematic three-dimensional view of one side of the combined structure of the driving and rotating mechanism and the close-proximity flaw detection mechanism of a segment damage testing device for subway shield tunnels proposed by the present invention;

[0022] Figure 6 This is a schematic three-dimensional view of the other side of the combined structure of the driving and rotating mechanism and the close-proximity flaw detection mechanism of a segment damage testing device for subway shield tunnels proposed by the present invention;

[0023] Figure 7 This is a schematic three-dimensional view of the structure of the first motor, the driving gear, and the turntable of a segment damage testing device for subway shield tunnels proposed by the present invention;

[0024] Figure 8 This is a schematic three-dimensional view of the partial structure of the driving and rotating mechanism of a segment damage testing device for subway shield tunnels proposed by the present invention;

[0025] Figure 9 This is a schematic three-dimensional view of the detailed structure of the rotating special-shaped seat of a segment damage testing device for subway shield tunnels proposed by the present invention;

[0026] Figure 10 This is a schematic three-dimensional view of the overall structure of the close-proximity flaw detection mechanism of a segment damage testing device for subway shield tunnels proposed by the present invention;

[0027] Figure 11 This is a schematic three-dimensional view of the partial structure of the close-proximity flaw detection mechanism of a segment damage testing device for subway shield tunnels proposed by the present invention;

[0028] Figure 12 This is a schematic three-dimensional view of the partial structure of the other side of the close-proximity flaw detection mechanism of a segment damage testing device for subway shield tunnels proposed by the present invention;

[0029] Figure 13 This is a schematic three-dimensional view of the protective cover and the X-ray machine of a segment damage testing device for subway shield tunnels proposed by the present invention.

[0030] Legend Explanation: 100, support assembly member; 200, drive rotation mechanism; 300, close contact flaw detection mechanism; 101, mounting base; 102, mounting screw hole; 103, support column; 104, loading tray; 105, arc-shaped slide rail; 106, gear ring; 107, rotating special-shaped seat; 108, upper chute; 109, limiting groove; 110, first connecting seat; 201, first motor; 202, sprocket; 203, rotating shaft; 204, driving gear; 205, turntable; 206, mounting part; 207, central shaft; 208, transmission rod; 209, first slider; 210, first side slide rail; 211, lifting plate; 212, first toothed plate; 213, driven gear; 214, connecting shaft; 215, first connecting rod; 216, second connecting seat; 217, cleaning brush plate; 218, second slider; 219, second connecting rod; 220, chain; 301, support seat; 302, second motor; 303, driving screw; 304, threaded lifting rod; 305, second side slide rail; 306, lifting bracket; 307, protective cover; 308, X-ray machine; 309, backing plate; 310, second toothed plate; 311, mating gear; 312, third connecting rod; 313, fixing seat; 314, rotating rod; 315, extension shaft; 316, limiting rod; 317, limiting block; 318, groove. Detailed Implementation Manner

[0031] In order to more clearly understand the above-mentioned objects, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0032] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the present invention is not limited by the specific embodiments disclosed in the following specification.

[0033] In the prior art, when the shield segment is used for a long time, the inside of the shield segment will be corroded, resulting in damage to the inside of the shield segment. The quality of the shield segment is directly related to the overall quality and safety of the tunnel. In order to extend the life of the shield segment, damage detection equipment is required to detect the shield segment. Most of the detection methods are to analyze the damage degree after irradiating the shield segment with the X-ray machine 308. However, during the damage detection process of the shield segment, there will be some dust and dirt attached to the inner wall of the shield segment. As a result, when the X-ray penetrates the shield segment, the dust and dirt will affect the accuracy of the damage result of the segment. And since there will be construction workers working in the tunnel later, a large amount of radiation will be generated when the X-ray machine 308 detects, and these radiations will affect the tunnel construction workers and affect the physical health of the tunnel construction workers.

[0034] For this reason, the purpose of the present invention is at least that the driving rotation mechanism 200 drives the rotating special-shaped seat 107 to rotate circumferentially along the arc-shaped slide rail 105. During the rotation process, the cleaning brush plate 217 located at the upper end of the rotating special-shaped seat 107 can be linked to reciprocate, so as to clean the dust and soil on the inner wall of the shield segment, which is convenient for the subsequent X-ray machine 308 to detect the damage of the shield segment, improving the practicability of the damage testing equipment and the accuracy of detection. At the same time, the X-ray machine 308 can also be driven to rotate to realize flaw detection of shield segments at different positions in the tunnel. Subsequently, the X-ray machine 308 is pushed towards the shield segment to be detected by closely adhering to the flaw detection mechanism 300. During the movement process, the protective cover 307 can also be linked to move between the shield segment and the flaw detection head of the X-ray machine 308. The protective cover 307 isolates the radiation generated during the detection of the X-ray machine 308, enabling the damage detection equipment to have the function of radiation isolation, and automatically achieving the integration effect of flaw detection and radiation protection, further improving the practicability of the damage testing equipment.

[0035] Example, according to Figures 1-13 , as Figures 1-2 and Figures 4-5 shown, a subway shield tunnel segment damage testing equipment provided by an embodiment of the present invention includes a support assembly member 100. The support assembly member 100 includes a rotating special-shaped seat 107. A driving rotation mechanism 200 is installed at the lower end of the rotating special-shaped seat 107. A closely adhering flaw detection mechanism 300 is installed at the upper end of the driving rotation mechanism 200. The driving rotation mechanism 200 can clean the surface of the segment in the tunnel during the process of driving the rotating special-shaped seat 107 to rotate. The closely adhering flaw detection mechanism 300 includes an X-ray machine 308. The closely adhering flaw detection mechanism 300 can perform anti-radiation treatment on the radiation generated by the X-ray machine 308 during the flaw detection process; the driving rotation mechanism 200 includes a first motor 201. The first motor 201 is installed at the lower end of the rotating special-shaped seat 107. The output shaft of the first motor 201 is fixedly connected to a rotating shaft 203. One end of the rotating shaft 203 is fixedly connected to a driving gear 204. The driving gear 204 is externally meshed with a gear ring 106; the closely adhering flaw detection mechanism 300 includes a lifting bracket 306. Chute grooves are arranged on both sides of the lifting bracket 306. Second side slide rails 305 are slidably installed in the chute grooves on both sides of the lifting bracket 306. The lower ends of the two second side slide rails 305 are fixedly connected to a support seat 301. The support seat 301 is fixedly connected to the upper end of one side surface of the rotating special-shaped seat 107;

[0036] Specifically, start the first motor 201 to drive the rotation of the driving gear 204. The driving gear 204 is meshed and connected to the gear ring 106. The first motor 201 is installed on the rotating special-shaped seat 107, and the rotating special-shaped seat 107 is installed on the arc-shaped slide rail 105 of the loading plate 104. The gear ring 106 is fixedly connected to one side surface of the loading plate 104, which can drive the rotating special-shaped seat 107 along the arc-shaped slide rail 105. Since the arc-shaped slide rail 105 is provided with a cleaning brush plate 217 and an X-ray machine 308 through the driving and rotating mechanism 200 and closely adheres to the flaw detection mechanism 300, when the rotating special-shaped seat 107 rotates along the arc-shaped slide rail 105, the cleaning brush plate 217 can automatically clean the shield segments in the tunnel, and at the same time, the X-ray machine 308 can be driven to rotate to realize flaw detection of the shield segments at different positions in the tunnel.

[0037] As Figures 3-4 As shown in the figure, a loading plate 104 is provided on one side of the rotating special-shaped seat 107. An arc-shaped slide rail 105 is fixedly connected to the surface edge of the loading plate 104. The rotating special-shaped seat 107 is installed on the arc-shaped slide rail 105. A gear ring 106 is fixedly connected to the surface of the loading plate 104. The gear ring 106 is located inside the arc-shaped slide rail 105. A first connecting seat 110 is fixedly connected to the other end surface of the loading plate 104. A support column 103 is fixedly connected to one side of the first connecting seat 110. An installation seat 101 is fixedly connected to one side of the support column 103. The installation seat 101 is provided with a number of uniformly distributed installation screw holes 102. An upper slide groove 108 is provided on one side of the upper surface of the rotating special-shaped seat 107. Limit grooves 109 are opened at both ends of the upper surface of the rotating special-shaped seat 107;

[0038] Specifically, a first connecting seat 110 is connected to one side of the loading plate 104. A support column 103 is connected to one side of the first connecting seat 110. One end of the support column 103 is connected to an installation seat 101. The surface of the installation seat 101 is provided with a number of uniformly distributed installation screw holes 102. Through the installation screw holes 102, the damage detection device can be installed on the driving vehicle to drive the entire damage detection device to move in the tunnel for cleaning and flaw detection operations.

[0039] As Figures 7-9As shown in the figure, a turntable 205 is provided above the rotating shaft 203. A central shaft 207 is fixedly connected to the center of the turntable 205. The central shaft 207 is rotatably installed on one side surface of the rotating special-shaped seat 107. A sprocket 202 is fixedly sleeved on the central shaft 207 and the rotating shaft 203. A chain 220 is installed on the two sprockets 202. A mounting member 206 is fixedly connected to the edge of one side surface of the turntable 205. A transmission rod 208 is rotatably installed on the mounting member 206. One end of the transmission rod 208 is rotatably installed with a first slider 209. The first slider 209 is installed in the first side slide rail 210. The first side slide rail 210 is fixedly connected to one side surface of the rotating special-shaped seat 107. A lifting plate 211 is fixedly connected to the upper surface of the first slider 209. First toothed plates 212 are fixedly connected to both side surfaces of the lifting plate 211. The first toothed plates 212 are meshed with a driven gear 213. A connecting shaft 214 is fixedly connected to the center of the driven gear 213. One end of the connecting shaft 214 is rotatably installed on one side surface of the rotating special-shaped seat 107. A second connecting rod 219 is fixedly connected to one end of each connecting shaft 214. The upper end of the second connecting rod 219 is rotatably installed with a first connecting rod 215. The upper end of the first connecting rod 215 is rotatably installed with a second connecting seat 216. The first connecting rod 215 is located in the limiting groove 109. A cleaning brush plate 217 is fixedly connected to the upper end of the second connecting seat 216. A second slider 218 is fixedly connected to one side of the lower surface of the cleaning brush plate 217. The second slider 218 is installed in the upper slide groove 108;

[0040] Specifically, when the first motor 201 drives the driving gear 204 to rotate through the rotating shaft 203, since the rotating shaft 203 drives the turntable 205 to rotate around the central shaft 207 through the sprocket 202 and the chain 220, and since the turntable 205 is connected with the first slider 209 through the mounting member 206 and the transmission rod 208, the first slider 209 can be driven to perform reciprocating up and down movement along the first side slide rail 210. Through the lifting plate 211 and the first toothed plates 212 fixedly connected to the upper surface of the first slider 209, and the first toothed plates 212 being meshed with the driven gear 213, the connecting shaft 214 can be driven to rotate. Since the connecting shaft 214 is rotatably installed on the first connecting rod 215 through the second connecting rod 219, the first connecting rod 215 is connected to the cleaning brush plate 217 through the second connecting seat 216, and the cleaning brush plate 217 is installed in the upper slide groove 108 through the second slider 218, the two cleaning brush plates 217 can be driven to perform reciprocating movement along the upper slide groove 108, and the shield segments on the inner wall of the tunnel can be cleaned through the cleaning brush plate 217.

[0041] As Figures 10-13As shown in the figure, a second motor 302 is fixedly connected to the upper surface of the support base 301. The output shaft of the second motor 302 is fixedly connected to a driving screw 303. The driving screw 303 is meshed with a threaded lifting rod 304. The threaded lifting rod 304 is fixedly connected to the lower surface of the lifting bracket 306. The lifting bracket 306 is arranged in a U shape. Four rotating rods 314 are rotatably installed at the four corners of the inner wall of the lifting bracket 306. A mating gear 311 is fixedly sleeved on the surface of each rotating rod 314. One side of each mating gear 311 is meshed with a second toothed plate 310 through teeth. One side of the second toothed plate 310 is fixedly connected to a backing plate 309. The backing plate 309 is fixedly connected to one side surface of the rotating special-shaped seat 107. One end of each rotating rod 314 is fixedly connected to a third connecting rod 312. One end of each third connecting rod 312 is rotatably installed with an extension shaft 315. The extension shafts 315 are rotatably connected to a fixed seat 313. One side of the fixed seat 313 is fixedly connected to an X-ray machine 308. A protective cover 307 is arranged outside the output end of the X-ray machine 308. The protective cover 307 is made of lead. A groove 318 is arranged on one side of the protective cover 307. Limiting blocks 317 are fixedly connected to both sides of the inner wall of the groove 318. A limiting rod 316 is installed on each limiting block 317. The limiting rod 316 is fixedly connected to both ends of the upper extension shaft 315;

[0042] Specifically, start the second motor 302 to drive the driving screw 303 to rotate. The driving screw 303 is threadedly connected to the threaded lifting rod 304. The upper end of the threaded lifting rod 304 is connected to the lifting bracket 306. The two sides of the lifting bracket 306 are installed on the second side slide rail 305, so that the lifting bracket 306 can be driven to move up and down along the second side slide rail 305. Since the mating gear 311 is installed on the inner side of the lifting bracket 306 through the rotating rod 314 and the mating gear 311 is meshed with the second toothed plate 310, the rotating rod 314 can be driven to rotate. The rotating rod 314 is connected to the X-ray machine 308 through the third connecting rod 312, the extension shaft 315 and the fixed seat 313, so that the X-ray machine 308 can be driven to rotate and move around the rotating rod 314, achieving driving the X-ray machine 308 to move out of the rotating special-shaped seat 107 and approach the shield segment. When the fixed seat 313 rotates around the rotating rod 314, the limiting rod 316 can also be driven to rotate. Since the limiting block 317 is installed in the limiting rod 316 and the limiting block 317 is fixedly connected to the groove 318 of the protective cover 307, the protective cover 307 can be driven to move between the shield segment and the detection head of the X-ray machine 308. The protective cover 307 isolates the radiation generated during the detection of the X-ray machine 308, enabling the damage detection device to have the function of isolating radiation.

[0043] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A subway shield tunnel segment damage testing device, comprising a support assembly component (100), characterized in that: The support assembly component (100) comprises a rotating special-shaped seat (107), a driving rotating mechanism (200) is installed at the lower end of the rotating special-shaped seat (107), and a close-fitting flaw detection mechanism (300) is installed at the upper end of the driving rotating mechanism (200). The driving rotating mechanism (200) can clean the surface of the pipe segment in the tunnel during the process of driving the rotating special-shaped seat (107) to rotate, and the close-fitting flaw detection mechanism (300) comprises an X-ray machine (308). The close-fitting flaw detection mechanism (300) can perform radiation protection treatment on the radiation generated by the X-ray machine (308) during the flaw detection process; The driving rotating mechanism (200) comprises a No. 1 motor (201), the No. 1 motor (201) being mounted at the lower end of the rotating special-shaped seat (107), the output shaft of the No. 1 motor (201) being fixedly connected to a rotating shaft (203), one end of the rotating shaft (203) being fixedly connected to a driving gear (204), the outer side of the driving gear (204) being meshingly connected to a gear ring (106); The close-fitting flaw detection mechanism (300) comprises a lifting bracket (306), and slide grooves are arranged on both sides of the lifting bracket (306). The slide grooves on both sides of the lifting bracket (306) are slidably mounted with second side slide rails (305), and the lower ends of the second side slide rails (305) on both sides are fixedly connected to support seats (301), and the support seats (301) are fixedly connected to the upper end of one side surface of the rotating special-shaped seat (107); A No. 2 motor (302) is fixedly connected to the upper surface of the support seat (301); the output shaft of the No. 2 motor (302) is fixedly connected to a driving screw (303); the driving screw (303) is meshingly connected to a threaded lifting rod (304); the threaded lifting rod (304) is fixedly connected to the lower surface of a lifting bracket (306); the lifting bracket (306) is arranged in a U shape; four rotating rods (314) are rotatably mounted at the four corners of the inner wall of the lifting bracket (306); a matching gear (311) is fixedly sleeved on the surface of each rotating rod (314); one side of each matching gear (311) is meshingly connected to a No. 2 tooth plate (310) via a latch; one side of the No. 2 tooth plate (310) is fixedly connected to a pad (309); the pad (309) is fixedly connected to the surface of one side of the rotating special-shaped seat (107); One end of each rotating rod (314) is fixedly connected to a No. 3 connecting rod (312), one end of each No. 3 connecting rod (312) is rotatably mounted with an extension shaft (315), a fixing seat (313) is rotatably connected between each of the extension shafts (315), one side of the fixing seat (313) is fixedly connected to an X-ray machine (308), a protective cover (307) is arranged on the outer side of the output end of the X-ray machine (308), the protective cover (307) is made of lead, a groove (318) is arranged on one side of the protective cover (307), both sides of the inner wall of the groove (318) are fixedly connected to a limiting block (317), each limiting block (317) is mounted with a limiting rod (316), and the limiting rod (316) is fixedly connected to both ends of the upper extension shaft (315).

2. The subway shield tunnel segment damage testing device according to claim 1 is characterized by: A loading plate (104) is provided on one side of the rotating special-shaped seat (107); an arc-shaped slide rail (105) is fixedly connected to the edge of the surface of the loading plate (104); the rotating special-shaped seat (107) is mounted on the arc-shaped slide rail (105); a gear ring (106) is fixedly connected to the surface of the loading plate (104); and the gear ring (106) is located inside the arc-shaped slide rail (105).

3. The subway shield tunnel segment damage testing device according to claim 2 is characterized by: A No. 1 connection seat (110) is fixedly connected to the other end surface of the loading plate (104); a support column (103) is fixedly connected to one side of the No. 1 connection seat (110); a mounting seat (101) is fixedly connected to one side of the support column (103); a plurality of evenly distributed mounting screw holes (102) are provided on the mounting seat (101); an upper sliding groove (108) is provided on one side of the upper end surface of the rotating special-shaped seat (107); and limiting grooves (109) are provided at both end edges of the upper surface of the rotating special-shaped seat (107).

4. The subway shield tunnel segment damage testing device according to claim 1, characterized in that: A turntable (205) is arranged above the rotating shaft (203), a central shaft (207) is fixedly connected to the center of the turntable (205), the central shaft (207) is rotatably mounted on a surface of one side of the rotating special-shaped seat (107), sprockets (202) are fixedly sleeved on the central shaft (207) and the rotating shaft (203), and chains (220) are transmission-mounted on the two sprockets (202).

5. The subway shield tunnel segment damage testing device according to claim 4 is characterized by: A mounting member (206) is fixedly connected to the edge of one side surface of the rotating disk (205); a transmission rod (208) is rotatably mounted on the mounting member (206); a first slider (209) is rotatably mounted on one end of the transmission rod (208); the first slider (209) is mounted in a first side slide rail (210); and the first side slide rail (210) is fixedly connected to one side surface of the rotating special-shaped seat (107).

6. The subway shield tunnel segment damage testing device according to claim 5 is characterized by: A lifting plate (211) is fixedly connected to the upper surface of the No. 1 slider (209), and a No. 1 tooth plate (212) is fixedly connected to the two side surfaces of the lifting plate (211), and the No. 1 tooth plate (212) is meshingly connected to a driven gear (213), and a connecting shaft (214) is fixedly connected at the center of the driven gear (213), and one end of the connecting shaft (214) is rotatably mounted on a side surface of the rotating special-shaped seat (107).

7. The subway shield tunnel segment damage testing device according to claim 6, characterized in that: One end of each connecting shaft (214) is fixedly connected to a No. 2 connecting rod (219); a No. 1 connecting rod (215) is rotatably mounted on the upper end of the No. 2 connecting rod (219); a No. 2 connecting seat (216) is rotatably mounted on the upper end of the No. 1 connecting rod (215); the No. 1 connecting rod (215) is located in the limiting groove (109); a cleaning brush plate (217) is fixedly connected to the upper end of the No. 2 connecting seat (216); a No. 2 sliding block (218) is fixedly connected to one side of the lower surface of the cleaning brush plate (217); and the No. 2 sliding block (218) is mounted in the upper sliding groove (108).

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