X-ray detection mechanism

Abstract

The present invention discloses an X-ray detection mechanism, comprising a central frame, a lower frame, an upper frame and an X-ray detector. During use of the present invention, an upper walking platform is lifted by an upper lifting frame in an upper storage cavity at the top of the upper frame. During the lifting process of the upper walking platform, the upper walking wheels gradually fit onto the top surface of the inner wall of the gas pipeline, and with the driving of the upper electric roller, the shaking and tipping of the lower frame and the upper frame during the movement are avoided, thereby further ensuring the X-ray flaw detection effect inside the gas pipeline. The lower storage frame drives the lower frame to move upward and be stored in the bottom area of ​​the central frame, and then drives the upper electric roller so that the upper electric roller drives the upper walking wheels to move along the inner top of the gas pipeline until it passes through the obstacle area smoothly. Then, the lower storage frame is operated to drive the lower frame to unfold again, thereby completing the obstacle avoidance step and ensuring effective X-ray flaw detection on the bottom of the long-distance gas pipeline.

Description

Technical Field

[0001] The invention relates to the technical field of labels, in particular to an X-ray detection mechanism. Background Art

[0002] X-ray testing is an experimental technique that uses X-ray technology to observe, study and inspect the microstructure, chemical composition, surface or internal structural defects of materials, such as X-ray powder diffraction, X-ray fluorescence spectroscopy, X-ray photography, X-ray topography, etc.

[0003] X-ray flaw detection refers to the use of X-rays to penetrate metal materials. Due to the different absorption and scattering effects of the materials on the rays, the film sensitivity is different, thus forming images of different blackness on the film, and based on this, an inspection method is used to judge the internal defects of the material.

[0004] The main reasons why X-rays are widely used in non-destructive testing technology are: they can penetrate materials that visible light cannot penetrate; they have attenuation effects and attenuation laws in materials; they can produce photochemical effects, ionization effects, and fluorescence phenomena on certain materials. Moreover, these effects will increase with the increase of X-ray intensity.

[0005] X-ray flaw detection uses the difference in the degree of X-ray absorption due to different material thicknesses to show the internal defects of materials, parts and welds from films and images through X-ray fluoroscopy and industrial television real-time imaging. Such as cracks, shrinkage cavities, pores, slag inclusions, incomplete fusion, incomplete penetration, etc., to determine the location and size. The quality of materials or products is evaluated by observing the nature, size and location of the defects, thereby preventing major accidents caused by internal defects of materials and poor processing.

[0006] In the prior art, an X-ray detection mechanism is disclosed in the announcement number "CN220795088U". The X-ray detection mechanism includes a mounting frame, on which a conveyor belt is installed, and also includes: an adjustable bracket, which is bolted to one side of the mounting frame and close to the middle, on which an X-ray source is installed, and the X-ray source is located directly above the conveyor belt; a number of fixed brackets, which are equidistantly arranged on the conveyor belt, and on which an X-ray receiving plate and a material tray are placed. In the X-ray detection mechanism provided in the present application, the X-ray source is directly installed on the side of the mounting frame on which the conveyor belt is installed through the adjustable bracket, and the installation position is close to the middle position; at the same time, a material tray is installed on the conveyor belt through the fixed bracket, so that when in use, the material to be detected can be directly placed on the material tray manually, which can ensure the safe distance between the operator and the X-ray source, and can ensure the accuracy of the placement of the material to be detected.

[0007] However, the existing technology still has major deficiencies, such as:

[0008] In the above device and prior art:

[0009] 1. During the production process of circular gas pipelines, gas pipelines of different diameters are welded and sealed according to different construction processes. After the welding and sealing, the pipelines are buried in the preset channel for gas supply. The gas pipelines need to be inspected regularly during use and X-ray flaw detection is performed before pre-embedding. Long-distance circular gas pipelines are difficult to take and internal X-ray flaw detection is difficult;

[0010] 2. If an X-ray flaw detection vehicle is used, long-distance circular gas pipelines can be inspected for flaws. However, if the flaw detection vehicle encounters obstacles such as fallen iron filings inside the gas pipeline, the flaw detection vehicle cannot move forward, resulting in the inability to perform effective X-ray flaw detection on long-distance circular gas pipelines. Summary of the invention

[0011] The object of the present invention is to provide an X-ray detection mechanism to solve the problems raised in the above background technology.

[0012] To achieve the above-mentioned object, the present invention provides the following technical solutions: an X-ray detection mechanism, comprising a central frame, a lower frame, an upper frame and an X-ray detector, wherein a transverse loading platform is installed inside the central frame, the lower frame is arranged on the upper surface of the transverse loading platform, the upper frame is arranged on the lower surface of the transverse loading platform, and the X-ray detector is arranged in a plurality of groups, and the plurality of groups of X-ray detectors are respectively arranged on both sides of the lower frame and the upper frame;

[0013] A walking unit in the pipeline of the detection vehicle body, wherein the walking unit in the pipeline of the detection vehicle body is respectively arranged in the lower frame and the upper frame area, and is used to perform mobile biopsy on the detection area during the X-ray flaw detection process inside the pipeline;

[0014] An internal obstacle avoidance unit for detecting a vehicle frame pipe, wherein the internal obstacle avoidance unit for detecting a vehicle frame pipe is arranged in an outer area of ​​the central frame, and is used for, during a detection process, when the lower frame and the upper frame encounter an obstacle that cannot be climbed over, the internal obstacle avoidance unit for detecting a vehicle frame pipe assists the lower frame and the upper frame to be stored, and then the obstacle area is avoided for detection;

[0015] The dust removal unit on the surface of the detector in the detection vehicle body pipeline is arranged on the upper frame. The X-ray detector installed in the upper frame area will be affected by the iron filings falling from the detection tube wall during the detection process, making the shooting area of ​​the X-ray detector blurred. The dust removal unit on the surface of the detector in the detection vehicle body pipeline can remove the iron filings and impurities attached to the shooting area of ​​the X-ray detector.

[0016] Preferably, the walking unit in the pipeline of the detection vehicle body includes a lower walking platform, a lower storage cavity is provided at the bottom of the lower frame, a lower lifting frame is installed in the lower storage cavity, the lower walking platform is installed on the lifting end of the lower lifting frame, a lower electric roller is installed on the top of the lower walking platform, a lower walking wheel is installed on the surface of the lower electric roller, lower side platforms are installed on both sides of the lower frame, and a moving part is provided on the surface of the lower side platform.

[0017] Preferably, the walking unit in the pipeline of the detection vehicle body also includes an upper walking platform, an upper storage cavity is provided on the top of the upper frame, an upper lifting frame is installed in the upper storage cavity, the upper walking platform is installed on the lifting end of the upper lifting frame, an upper electric roller is installed on the top of the upper walking platform, an upper walking wheel is installed on the surface of the upper electric roller, upper side platforms are installed on both sides of the upper frame, and the moving part is also provided on the surface of the upper side platform.

[0018] Preferably, the movable part includes a mounting plate, a fixed clamping plate is mounted at one end of the mounting plate, a movable vertical plate is slidably mounted on one side of the mounting plate, movable clamping plates are mounted on both sides of the movable vertical plate, a vertical limit rod is mounted on the bottom of the fixed clamping plate, the movable clamping plate is slidably sleeved on the surface of the vertical limit rod, a buffer spring is sleeved on the vertical limit rod, two ends of the buffer spring are respectively fixed to the fixed clamping plate and one side of the movable clamping plate, an output motor is mounted on one side of the movable vertical plate, a movable wheel is mounted on the rotating end of the output motor, and a side slope is arranged on the surface of the movable wheel.

[0019] Preferably, the obstacle avoidance unit inside the detection frame pipe includes an arc-shaped rubber sleeve, which is arranged into a plurality of groups. The plurality of groups of arc-shaped rubber sleeves are symmetrically installed at both ends of the central frame. The arc-shaped rubber sleeve is provided with an expansion margin. A central through groove is opened on the surface of the arc-shaped rubber sleeve. A central rotating wheel is rotatably installed inside the central through groove. Inflatable airbags are installed on the inner sides of the central frame and the arc-shaped rubber sleeves, and two groups of inflatable airbags are installed on the inner sides of each group of the arc-shaped rubber sleeves.

[0020] Preferably, the dust removal unit on the surface of the detector in the detection vehicle body pipeline includes a lateral air box, which is installed on one side of the lower frame. An arc-shaped nozzle is installed on one side of the lateral air box, and the arc-shaped nozzles are arranged into several groups at intervals, and one end of several groups of arc-shaped nozzles faces the side of the lower frame.

[0021] Preferably, obstacle avoidance stability enhancement units are provided on both sides of the lower frame and the upper frame, the obstacle avoidance stability enhancement unit includes a lower stabilizing part, the lower stabilizing part includes a lower stabilizing arm, a lower fixed platform is installed on the top of the lower side platform, a lower rotating roller is installed between the lower side platform and the lower fixed platform, the lower stabilizing arm is installed on the rotating end of the lower rotating roller, a lower stabilizing cavity is provided on the surface of the lower stabilizing arm, and a lower side wheel is rotatably installed in the lower stabilizing cavity.

[0022] Preferably, the obstacle avoidance stability enhancement unit also includes an upper stabilizing part, the upper stabilizing part includes an upper stabilizing arm, an upper fixed platform is installed on the top of the upper side platform, an upper rotating roller is installed between the upper side platform and the upper fixed platform, the upper stabilizing arm is installed on the rotating end of the upper rotating roller, an upper stabilizing cavity is provided on the surface of the upper stabilizing arm, and an upper side wheel is rotatably installed in the upper stabilizing cavity.

[0023] Preferably, an upper storage rack is installed on the top of the transverse loading platform, and a lifting end of the upper storage rack is fixed to the bottom of the upper frame.

[0024] Preferably, a lower storage rack is installed at the bottom of the transverse loading platform, and a lifting end of the lower storage rack is fixed to the bottom of the lower frame.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. During use, during the movement, the X-ray detectors on the lower frame and the upper frame will take pictures and detect the welding interface areas of each part inside the gas pipeline. At the same time, X-ray detectors are installed at both ends of the lower frame and the upper frame, which can effectively avoid missing the detection area and ensure the X-ray flaw detection effect inside the gas pipeline;

[0027] 2. When in use, the upper platform is lifted up through the upper lifting frame in the upper storage cavity on the top of the upper frame. During the lifting process of the upper platform, the upper wheels gradually fit on the top surface of the inner wall of the gas pipeline, and with the drive of the upper electric roller, the lower frame is further assisted to move quickly, and at the same time, the lower frame and the upper frame are fully unfolded in the inner cavity of the gas pipeline, avoiding the shaking and tipping of the lower frame and the upper frame during the movement, and further ensuring the X-ray flaw detection effect inside the gas pipeline;

[0028] 3. When in use, as the lower platform is continuously unfolded, the lower wheels on the surface of the lower platform will gradually fit on the bottom of the inner wall of the gas pipeline. When the lower wheels are completely fitted on the bottom of the inner wall of the gas pipeline, the lower electric roller outputs power, so that the lower wheels assist the upper wheels, further increasing the moving speed of the frame, thereby improving the efficiency of X-ray pipeline flaw detection;

[0029] 4. When in use, the lower storage rack drives the lower frame to move up and be stored in the bottom area of ​​the central frame, and then drives the upper electric roller to drive the upper walking wheel to move along the inner top of the gas pipeline until it passes the obstacle area smoothly. Then, the lower storage rack is operated to drive the lower frame to unfold again, thereby completing the obstacle avoidance step and ensuring effective X-ray flaw detection at the bottom of the long-distance gas pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1It is an overall schematic diagram of the device of the present invention;

[0031] Figure 2 It is a schematic diagram of the side air box part of the present invention;

[0032] Figure 3 It is a schematic diagram of the upper storage cavity part of the present invention;

[0033] Figure 4 It is a schematic diagram of the lower storage chamber part of the present invention;

[0034] Figure 5 It is a schematic diagram of the lower lifting frame part of the present invention;

[0035] Figure 6 It is a schematic diagram of the lower stabilizing arm portion of the present invention;

[0036] Figure 7 It is a schematic diagram of the upper stabilizing arm portion of the present invention;

[0037] Figure 8 It is a schematic diagram of the upper lifting frame part of the present invention;

[0038] Fig. 9 It is a schematic diagram of the mounting plate part in the present invention;

[0039] Fig.10 It is a partial schematic diagram of the transverse loading platform in the present invention;

[0040] Fig.11 For the present invention Fig.10 A magnified schematic diagram of part A;

[0041] In the figure: 1. Central frame; 11. Horizontal loading platform; 13. Upper storage rack; 14. Lower storage rack; 15. Arc rubber sleeve; 151. Central through slot; 16. Central rotating wheel; 17. Inflatable airbag; 2. Lower frame; 21. Lower fixed platform; 22. Lower side platform; 23. Lower rotating roller; 24. Lower stabilizing arm; 241. Lower stabilizing chamber; 242. Lower side wheel; 25. Lower storage chamber; 251. Lower lifting frame; 26. Lower walking platform; 261. Lower electric rotating roller; 262. Lower walking wheel; 3. Upper frame; 31. Upper fixed platform ; 32. Upper side platform; 33. Upper rotating roller; 34. Upper stabilizing arm; 341. Upper stabilizing chamber; 342. Upper side wheel; 35. Upper storage chamber; 351. Upper lifting frame; 36. Upper walking platform; 361. Upper electric roller; 362. Upper walking wheel; 4. Mounting plate; 41. Fixed card plate; 411. Vertical limit rod; 412. Buffer spring; 42. Movable vertical plate; 421. Movable card plate; 43. Output motor; 44. Moving wheel; 441. Side slope; 5. X-ray detector; 6. Lateral air box; 61. Arc nozzle. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] See also Figure 1-11 , the present invention provides a technical solution:

[0044] Embodiment 1: An X-ray detection mechanism: comprising a central frame 1, a lower frame 2, an upper frame 3 and an X-ray detector 5, wherein a transverse loading platform 11 is installed inside the central frame 1, the lower frame 2 is arranged on the upper surface of the transverse loading platform 11, the upper frame 3 is arranged on the lower surface of the transverse loading platform 11, and the X-ray detector 5 is arranged in a plurality of groups, and the plurality of groups of X-ray detectors 5 are respectively arranged on both sides of the lower frame 2 and the upper frame 3;

[0045] An upper storage rack 13 is installed on the top of the transverse loading platform 11 , and a lifting end of the upper storage rack 13 is fixed to the bottom of the upper frame 3 .

[0046] A lower storage rack 14 is installed at the bottom of the transverse loading platform 11 , and a lifting end of the lower storage rack 14 is fixed to the bottom of the lower frame 2 .

[0047] In this embodiment, the inspector of the gas pipeline places the inspection mechanism into the pipeline to be inspected, and then controls the output motor 43 on the movable vertical plate 42 at the bottom of the lower frame 2 to output power. The output motor 43 drives the moving wheel 44 at the bottom of the lower frame 2 to rotate, so that the moving wheel 44 moves smoothly inside the pipeline through the side slope 441. During the movement, the X-ray detector 5 on the lower frame 2 and the upper frame 3 will shoot and inspect the welding interface areas of various parts inside the gas pipeline. At the same time, X-ray detectors 5 are provided at both ends of the lower frame 2 and the upper frame 3, which can effectively avoid missing the inspection area and ensure the X-ray flaw detection effect inside the gas pipeline.

[0048] The walking unit in the pipeline of the detection vehicle body is respectively arranged in the lower frame 2 and the upper frame 3 area, and is used for performing mobile biopsy on the detection area during the X-ray flaw detection process inside the pipeline;

[0049] The walking unit in the pipeline of the detection vehicle body includes a lower walking platform 26, a lower storage cavity 25 is arranged at the bottom of the lower frame 2, a lower lifting frame 251 is installed in the lower storage cavity 25, the lower walking platform 26 is installed on the lifting end of the lower lifting frame 251, a lower electric roller 261 is installed on the top of the lower walking platform 26, and a lower walking wheel 262 is installed on the surface of the lower electric roller 261, and lower side platforms 22 are installed on both sides of the lower frame 2, and a moving part is arranged on the surface of the lower side platform 22.

[0050] The walking unit in the pipeline of the detection vehicle body also includes an upper walking platform 36. An upper storage cavity 35 is arranged on the top of the upper frame 3. An upper lifting frame 351 is installed in the upper storage cavity 35. The upper walking platform 36 is installed on the lifting end of the upper lifting frame 351. An upper electric roller 361 is installed on the top of the upper walking platform 36. Upper walking wheels 362 are installed on the surface of the upper electric roller 361. Upper side platforms 32 are installed on both sides of the upper frame 3, and the surface of the upper side platform 32 is also provided with a moving part.

[0051] The moving part includes a mounting plate 4, a fixed clamping plate 41 is installed at one end of the mounting plate 4, a movable vertical plate 42 is slidably installed on one side of the mounting plate 4, movable clamping plates 421 are installed on both sides of the movable vertical plate 42, a vertical limiting rod 411 is installed at the bottom of the fixed clamping plate 41, the movable clamping plate 421 is slidably sleeved on the surface of the vertical limiting rod 411, a buffer spring 412 is sleeved on the vertical limiting rod 411, two ends of the buffer spring 412 are respectively fixed to the fixed clamping plate 41 and one side of the movable clamping plate 421, an output motor 43 is installed on one side of the movable vertical plate 42, a moving wheel 44 is installed on the rotating end of the output motor 43, and a side slope 441 is provided on the surface of the moving wheel 44.

[0052] In this embodiment, when the lower frame 2 moves, in order to ensure that the lower frame 2 and the central frame 1 and the lower frame 2 remain stable during the movement, the upper storage rack 13 on the top of the central frame 1 and the lower storage rack 14 on the bottom of the central frame 1 are driven to raise the central frame 1, and at the same time, the upper storage rack 13 on the top of the central frame 1 is raised so that the upper walking wheel 362 on the top of the upper storage rack 13 is close to the top of the inner wall of the gas pipeline, and then the upper lifting frame 351 in the upper storage cavity 35 on the top of the upper frame 3 is lifted. During the lifting process of the upper walking platform 36, the upper walking wheel 362 gradually adheres to the top surface of the inner wall of the gas pipeline, and with the drive of the upper electric roller 361, the rapid movement of the lower frame 2 is further assisted, and at the same time, the lower frame 2 and the upper frame 3 are fully unfolded in the inner cavity of the gas pipeline, so as to avoid the shaking and tipping of the lower frame 2 and the upper frame 3 during the movement, and further ensure the X-ray flaw detection effect inside the gas pipeline.

[0053] An obstacle avoidance unit inside the detection frame pipe is arranged in the outer area of ​​the central frame 1, and is used for storing the lower frame 2 and the upper frame 3 with the assistance of the obstacle avoidance unit inside the detection frame pipe when the lower frame 2 and the upper frame 3 encounter obstacles that cannot be climbed over during the detection process, and then avoiding the obstacle area for detection;

[0054] The obstacle avoidance unit inside the detection frame pipeline includes an arc-shaped rubber sleeve 15, which is arranged into several groups. The several groups of arc-shaped rubber sleeves 15 are symmetrically installed at both ends of the central frame 1. The arc-shaped rubber sleeve 15 is provided with an expansion margin. A central through groove 151 is opened on the surface of the arc-shaped rubber sleeve 15. A central rotating wheel 16 is rotatably installed inside the central through groove 151. Inflatable airbags 17 are installed on the inner sides of the central frame 1 and the arc-shaped rubber sleeves 15, and two groups of inflatable airbags 17 are installed on the inner sides of each group of arc-shaped rubber sleeves 15.

[0055] In this embodiment, when the upper frame 3 is fully unfolded, the upper walking wheel 362 is in contact with the top surface of the inner wall of the gas pipeline, and then the lower lifting frame 251 in the lower storage cavity 25 at the bottom of the lower frame 2 is controlled to unfold the lower walking platform 26 downward. During the continuous unfolding process of the lower walking platform 26, the lower walking wheel 262 on the surface of the lower walking platform 26 will gradually fit the bottom of the inner wall of the gas pipeline. When the lower walking wheel 262 is fully in contact with the bottom of the inner wall of the gas pipeline, the lower electric roller 261 outputs power, so that the lower walking wheel 262 assists the upper walking wheel 362, further increasing the moving speed of the frame, thereby improving the efficiency of X-ray pipeline flaw detection.

[0056] The dust removal unit on the surface of the detector in the detection vehicle body pipeline is arranged on the upper frame 3. The X-ray detector 5 installed in the upper frame 3 area will be affected by the iron filings falling from the detection tube wall during the detection process, making the shooting area of ​​the X-ray detector 5 blurred. The dust removal unit on the surface of the detector in the detection vehicle body pipeline can remove the iron filings and impurities attached to the shooting area of ​​the X-ray detector 5;

[0057] The dust removal unit on the surface of the detector in the detection vehicle body pipeline includes a lateral air box 6, which is installed on one side of the lower frame 2, and an arc-shaped nozzle 61 is installed on one side of the lateral air box 6. The arc-shaped nozzle 61 is arranged in a plurality of groups at intervals, and one end of the plurality of groups of arc-shaped nozzles 61 faces the side of the lower frame 2;

[0058] In this embodiment, when the upper frame 3 moves along the top of the pipe, the iron filings on the top of the pipe will fall due to vibration, and the iron filing powder will be scattered in the shooting area of ​​the X-ray detector 5. The side air box 6 is slowly sprayed with gas toward the shooting area of ​​the X-ray detector 5, so that the iron filings and powder attached to the shooting area of ​​the X-ray detector 5 fall off, thereby ensuring the shooting effect of the X-ray detector 5.

[0059] Embodiment 2:

[0060] Based on the first embodiment, the second embodiment takes into account that, during the obstacle avoidance process, the central rotating wheel 16 can be fitted on the inner wall of the gas pipeline by expanding the arc-shaped rubber sleeve 15, so that the positioning of the central frame 1 can be achieved. During the movement, the upper running wheel 362 moves along the inner top of the gas pipeline to drive the central rotating wheel 16 to move along the inner wall of the gas pipeline. However, the contact surface between the central rotating wheel 16 and the inner wall of the gas pipeline is small, which may cause the upper frame 3 area to shake during the movement of the central frame 1. Therefore, an obstacle avoidance stability enhancement unit is provided in the second embodiment to solve the above-mentioned problems.

[0061] Obstacle avoidance stability enhancement units are provided on both sides of the lower frame 2 and the upper frame 3, and the obstacle avoidance stability enhancement units include a lower stabilizing part, and the lower stabilizing part includes a lower stabilizing arm 24. A lower fixed platform 21 is installed on the top of the lower side platform 22, and a lower rotating roller 23 is installed between the lower side platform 22 and the lower fixed platform 21. The lower stabilizing arm 24 is installed on the rotating end of the lower rotating roller 23, and a lower stabilizing cavity 241 is provided on the surface of the lower stabilizing arm 24, and a lower side wheel 242 is rotatably installed in the lower stabilizing cavity 241.

[0062] The obstacle avoidance stability enhancement unit also includes an upper stabilizing part, which includes an upper stabilizing arm 34. An upper fixed platform 31 is installed on the top of the upper side platform 32. An upper rotating roller 33 is installed between the upper side platform 32 and the upper fixed platform 31. The upper stabilizing arm 34 is installed on the rotating end of the upper rotating roller 33. An upper stabilizing cavity 341 is provided on the surface of the upper stabilizing arm 34, and an upper side wheel 342 is rotatably installed in the upper stabilizing cavity 341.

[0063] In this embodiment, when the lower frame 2 encounters an obstacle that cannot be climbed over, the lower storage rack 14 is driven to continue to lift up so that the central frame 1 moves up to the top area of ​​the inner wall close to the vertical pipe, and then the inflatable airbag 17 is driven to continuously inhale gas, so that the inflatable airbag 17 continues to expand. When the inflatable airbag 17 expands, it will push the arc-shaped rubber sleeve 15 to expand outward. As the arc-shaped rubber sleeve 15 continues to expand outward, the central rotating wheel 16 installed on the arc-shaped rubber sleeve 15 will fit on the inner wall of the gas transmission pipe. At this time, the central frame 1 will be positioned at The lower frame 2 is moved upwards near the top area of ​​the inner wall of the vertical pipeline, and then the lower storage rack 14 is driven again, so that the lower storage rack 14 drives the lower frame 2 to move upwards and be stored in the bottom area of ​​the central frame 1. Then, the upper electric roller 361 is driven to drive the upper walking wheel 362 to move along the inner top of the gas pipeline until it passes through the obstacle area smoothly. Then, the lower storage rack 14 is operated to drive the lower frame 2 to unfold again, thereby completing the obstacle avoidance step and ensuring effective X-ray flaw detection at the bottom of the long-distance gas pipeline.

[0064] When the upper frame 3 encounters an obstacle that cannot be climbed over, the upper storage rack 13 is driven to continue to lift up so that the central frame 1 moves down to the top area of ​​the inner wall close to the vertical pipe, and then the lower electric roller 261 is driven to drive the lower walking wheel 262 to move along the inner bottom of the gas pipeline until it successfully passes through the obstacle area, and then the upper storage rack 13 is operated to drive the upper frame 3 to be lifted and unfolded again, thereby completing the obstacle avoidance step of the upper frame 3, and further ensuring effective X-ray flaw detection at the top of the long-distance gas pipeline.

[0065] Working principle: When the device is in use, the output motor 43 on the movable vertical plate 42 at the bottom of the lower frame 2 outputs power, and the output motor 43 drives the moving wheel 44 at the bottom of the lower frame 2 to rotate, so that the moving wheel 44 moves smoothly inside the pipeline through the side slope 441. During the movement, the X-ray detector 5 on the lower frame 2 and the upper frame 3 will shoot and detect the welding interface areas of various parts inside the gas pipeline. At the same time, the X-ray detector 5 is set at both ends of the lower frame 2 and the upper frame 3, which can effectively avoid missing the detection area and ensure the X-ray flaw detection effect inside the gas pipeline;

[0066] When the lower frame 2 is moving, in order to ensure that the lower frame 2 and the central frame 1 and the lower frame 2 remain stable during the movement, the upper storage rack 13 on the top of the central frame 1 and the lower storage rack 14 on the bottom of the central frame 1 are driven to raise the central frame 1, and at the same time, the upper storage rack 13 on the top of the central frame 1 is raised so that the upper walking wheel 362 on the top of the upper storage rack 13 is close to the top of the inner wall of the gas pipeline, and then the upper lifting frame 351 in the upper storage cavity 35 on the top of the upper frame 3 is lifted. During the lifting process of the upper walking platform 36, the upper walking wheel 362 gradually adheres to the top surface of the inner wall of the gas pipeline, and with the drive of the upper electric roller 361, the rapid movement of the lower frame 2 is further assisted, and at the same time, the lower frame 2 and the upper frame 3 are fully unfolded in the inner cavity of the gas pipeline, so as to avoid the shaking and tipping of the lower frame 2 and the upper frame 3 during the movement, and further ensure the X-ray flaw detection effect inside the gas pipeline;

[0067] When the upper frame 3 is fully unfolded, the upper running wheel 362 is attached to the top surface of the inner wall of the gas pipeline, and then the lower lifting frame 251 in the lower storage cavity 25 at the bottom of the lower frame 2 is controlled to unfold the lower walking platform 26 downward. During the continuous unfolding process of the lower walking platform 26, the lower running wheel 262 on the surface of the lower walking platform 26 will gradually fit the bottom of the inner wall of the gas pipeline. When the lower running wheel 262 is fully attached to the bottom of the inner wall of the gas pipeline, the lower electric roller 261 outputs power, so that the lower running wheel 262 assists the upper running wheel 362, further increasing the moving speed of the frame, thereby improving the efficiency of X-ray pipeline flaw detection;

[0068] When the lower frame 2 encounters an obstacle that cannot be climbed over, the lower storage rack 14 is driven to continue to lift up so that the central frame 1 moves up to the top area of ​​the inner wall close to the vertical pipe, and then the inflatable airbag 17 is driven to continuously inhale gas, so that the inflatable airbag 17 continues to expand. When the inflatable airbag 17 expands, it will push the arc-shaped rubber sleeve 15 to expand outward. As the arc-shaped rubber sleeve 15 continues to expand outward, the central runner 16 installed on the arc-shaped rubber sleeve 15 will fit on the inner wall of the gas transmission pipe. At this time, the central frame 1 will be positioned close to the vertical pipe. Towards the top area of ​​the inner wall of the pipeline, and then again by driving the lower storage rack 14, the lower storage rack 14 drives the lower frame 2 to move up and be stored in the bottom area of ​​the central frame 1, and then by driving the upper electric roller 361, the upper electric roller 361 drives the upper walking wheel 362 to move along the inner top of the gas pipeline until it passes the obstacle area smoothly, and then the lower storage rack 14 is operated to drive the lower frame 2 to unfold again, thereby completing the obstacle avoidance step, ensuring effective X-ray flaw detection at the bottom of the long-distance gas pipeline;

[0069] When the upper frame 3 encounters an obstacle that cannot be climbed over, the upper storage rack 13 is driven to continue to lift up so that the central frame 1 moves down to the top area of ​​the inner wall close to the vertical pipe, and then the lower electric roller 261 is driven to drive the lower walking wheel 262 to move along the inner bottom of the gas pipeline until it successfully passes through the obstacle area, and then the upper storage rack 13 is operated to drive the upper frame 3 to be lifted and unfolded again, thereby completing the obstacle avoidance step of the upper frame 3, and further ensuring effective X-ray flaw detection at the top of the long-distance gas pipeline.

[0070] 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 X-ray detection mechanism, characterized in that: The invention comprises a central frame (1), a lower frame (2), an upper frame (3) and an X-ray detector (5); a transverse loading platform (11) is installed inside the central frame (1); the lower frame (2) is arranged on the upper surface of the transverse loading platform (11); the upper frame (3) is arranged on the lower surface of the transverse loading platform (11); the X-ray detector (5) is arranged in a plurality of groups; the plurality of groups of X-ray detectors (5) are respectively arranged on both sides of the lower frame (2) and the upper frame (3); A walking unit in the pipeline of the detection vehicle body, wherein the walking unit in the pipeline of the detection vehicle body is respectively arranged in the lower frame (2) and the upper frame (3) area, and is used to perform mobile biopsy on the detection area during the X-ray flaw detection process inside the pipeline; An internal obstacle avoidance unit for detecting a vehicle frame pipe, the internal obstacle avoidance unit for detecting a vehicle frame pipe being arranged in an outer area of ​​the central frame (1) and being used for, during a detection process, when the lower frame (2) and the upper frame (3) encounter an obstacle that cannot be climbed over, the internal obstacle avoidance unit for detecting a vehicle frame pipe assists the lower frame (2) and the upper frame (3) to be stored, and then the obstacle area is avoided for detection; The dust removal unit for the surface of the detector in the detection vehicle body pipeline is arranged on the upper frame (3). The X-ray detector (5) installed in the upper frame (3) area will be affected by iron filings falling from the detection pipe wall during the detection process, making the shooting area of ​​the X-ray detector (5) blurred. The dust removal unit for the surface of the detector in the detection vehicle body pipeline can remove iron filings and impurities attached to the shooting area of ​​the X-ray detector (5).

2. An X-ray detection mechanism according to claim 1, characterized in that: The walking unit in the pipeline of the detection vehicle body comprises a lower walking platform (26); a lower storage chamber (25) is arranged at the bottom of the lower frame (2); a lower lifting frame (251) is installed in the lower storage chamber (25); the lower walking platform (26) is installed on the lifting end of the lower lifting frame (251); a lower electric roller (261) is installed on the top of the lower walking platform (26); a lower walking wheel (262) is installed on the surface of the lower electric roller (261); lower side platforms (22) are installed on both sides of the lower frame (2); and a moving part is arranged on the surface of the lower side platform (22).

3. An X-ray detection mechanism according to claim 2, characterized in that: The walking unit in the pipeline of the detection vehicle body also includes an upper walking platform (36); an upper storage chamber (35) is arranged on the top of the upper frame (3); an upper lifting frame (351) is installed in the upper storage chamber (35); the upper walking platform (36) is installed on the lifting end of the upper lifting frame (351); an upper electric roller (361) is installed on the top of the upper walking platform (36); an upper walking wheel (362) is installed on the surface of the upper electric roller (361); upper side platforms (32) are installed on both sides of the upper frame (3); and the moving part is also arranged on the surface of the upper side platform (32).

4. An X-ray detection mechanism according to claim 3, characterized in that: The moving part comprises a mounting plate (4), one end of which is mounted with a fixed card plate (41), one side of which is slidably mounted with a movable vertical plate (42), both sides of which are mounted with movable card plates (421), a vertical limiting rod (411) is mounted at the bottom of the fixed card plate (41), the movable card plate (421) is slidably sleeved on the surface of the vertical limiting rod (411), a buffer spring (412) is sleeved on the vertical limiting rod (411), two ends of the buffer spring (412) are respectively fixed to the fixed card plate (41) and one side of the movable card plate (421), an output motor (43) is mounted on one side of the movable vertical plate (42), a moving wheel (44) is mounted on the rotating end of the output motor (43), and a side slope surface (441) is provided on the surface of the moving wheel (44).

5. An X-ray detection mechanism according to claim 1, characterized in that: The obstacle avoidance unit inside the detection frame pipeline comprises an arc-shaped rubber sleeve (15), wherein the arc-shaped rubber sleeve (15) is arranged into a plurality of groups, wherein the plurality of groups of the arc-shaped rubber sleeves (15) are symmetrically mounted at two ends of the central frame (1), wherein the arc-shaped rubber sleeve (15) is provided with an expansion margin, wherein a central through groove (151) is provided on the surface of the arc-shaped rubber sleeve (15), wherein a central rotating wheel (16) is rotatably mounted inside the central through groove (151), wherein an expansion airbag (17) is mounted inside the central frame (1) and the arc-shaped rubber sleeve (15), and wherein two groups of the expansion airbag (17) are mounted inside each group of the arc-shaped rubber sleeve (15).

6. An X-ray detection mechanism according to claim 1, characterized in that: The dust removal unit for the surface of the detector in the detection vehicle body pipeline comprises a lateral air box (6), the lateral air box (6) is installed on one side of the lower frame (2), an arc-shaped nozzle (61) is installed on one side of the lateral air box (6), the arc-shaped nozzle (61) is arranged in a plurality of groups at intervals, and one end of the plurality of groups of arc-shaped nozzles (61) faces the side of the lower frame (2).

7. An X-ray detection mechanism according to claim 3, characterized in that: Obstacle avoidance stability enhancement units are provided on both sides of the lower frame (2) and the upper frame (3), the obstacle avoidance stability enhancement unit comprising a lower stabilizing portion, the lower stabilizing portion comprising a lower stabilizing arm (24), a lower fixed platform (21) is installed on the top of the lower side platform (22), a lower rotating roller (23) is installed between the lower side platform (22) and the lower fixed platform (21), the lower stabilizing arm (24) is installed on the rotating end of the lower rotating roller (23), a lower stabilizing cavity (241) is provided on the surface of the lower stabilizing arm (24), and a lower side wheel (242) is rotatably installed in the lower stabilizing cavity (241).

8. An X-ray detection mechanism according to claim 7, characterized in that: The obstacle avoidance stability enhancement unit also includes an upper stabilizing part, which includes an upper stabilizing arm (34); an upper fixed platform (31) is installed on the top of the upper side platform (32); an upper rotating roller (33) is installed between the upper side platform (32) and the upper fixed platform (31); the upper stabilizing arm (34) is installed on the rotating end of the upper rotating roller (33); an upper stabilizing cavity (341) is provided on the surface of the upper stabilizing arm (34); and an upper side wheel (342) is rotatably installed in the upper stabilizing cavity (341).

9. An X-ray detection mechanism according to claim 1, characterized in that: An upper storage rack (13) is installed on the top of the transverse loading platform (11), and a lifting end of the upper storage rack (13) is fixed to the bottom of the upper vehicle frame (3).

10. An X-ray detection mechanism according to claim 1, characterized in that: A lower storage rack (14) is installed at the bottom of the transverse loading platform (11), and a lifting end of the lower storage rack (14) is fixed to the bottom of the lower vehicle frame (2).

Images