A metal pipe detection device for rail transit

Abstract

The present invention relates to a metal pipe detection device for rail transit, comprising a bracket, a bearing platform, a limiting platform, a limiting cylinder and a support arm; a fixed platform is fixedly connected to the inner edge of the bracket, a movable platform moves telescopically along the inner edge of the bracket, a bearing platform is arranged on the opposite surfaces of the fixed platform and the movable platform, a limiting platform is arranged on the bearing platform, and a limiting cylinder is arranged along the inner edge of the limiting platform; a limiting platform is arranged in the limiting cylinder, a limiting arm and a linkage frame are arranged on the limiting platform, a position movement module is arranged at the peripheral position of the limiting platform, and a vertical frame is arranged on the linkage frame. Through the coordinated control of operating member 1 and operating member 2 and in combination with the design of the telescopic movement module and the elastic member, the metal pipe detection device for rail transit can flexibly adapt to metal pipes of different specifications and sizes, including straight cylindrical metal pipes and metal pipes with butt joints, significantly improving the versatility and application range of the detection device.

Description

Technical Field

[0001] The present invention belongs to the technical field of metal pipe detection, and specifically relates to a metal pipe detection device for rail transit. Background Art

[0002] The rail transit industry has extremely high quality requirements for metal pipes. As key components, the surface quality, dimensional accuracy, and structural stability of metal pipes directly affect the safety and reliability of the rail transit system.

[0003] Metal pipe detection equipment mainly completes detection through manual positioning and scanning devices. However, the positioning device is relatively single and can only limit one specification of metal pipe. Since the commonly used metal pipes in rail transit are straight cylindrical and metal pipes with docking plates, when limiting the metal pipes with docking plates, the limited area of limitation is likely to cause position deviation, affecting the overall placement efficiency. Moreover, the deviation will affect the accuracy of the detection results, and it is also necessary to switch tooling back and forth, affecting the detection efficiency.

[0004] In view of this, a metal pipe detection device for rail transit is proposed. Summary of the Invention

[0005] The purpose of this part is to outline some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Simplifications or omissions may be made in this part, as well as in the abstract and title of the present application, to avoid obscuring the purpose of this part, the abstract, and the title. However, such simplifications or omissions shall not be used to limit the scope of the present invention.

[0006] In view of the following technical problems existing in the prior art: Metal pipe detection equipment mainly completes detection through manual positioning and scanning devices. However, the positioning device is relatively single and can only limit one specification of metal pipe. Since the commonly used metal pipes in rail transit are straight cylindrical and metal pipes with docking plates, when limiting the metal pipes with docking plates, the limited area of limitation is likely to cause position deviation, affecting the overall placement efficiency. Moreover, the deviation will affect the accuracy of the detection results, and it is also necessary to switch tooling back and forth, affecting the detection efficiency.

[0007] To solve the above technical problems, the present invention provides the following technical solution: A metal pipe detection device for rail transit, including a bracket, a carrier table, a limiting table, a limiting cylinder, and a support arm.

[0008] A fixed table is fixedly connected to the inner edge of the bracket, a movable table moves telescopically along the inner edge of the bracket, a carrier table is arranged on the opposite surfaces of the fixed table and the movable table, a limiting table is placed on the carrier table, and a limiting cylinder is arranged on the inner edge of the limiting table.

[0009] A limiting platform is installed in the limiting cylinder. A limiting arm and a linkage frame are arranged on the limiting platform. A position movement module is arranged at the peripheral position of the limiting platform. A vertical frame is arranged on the linkage frame. The limiting arm and the linkage frame perform telescopic movement on the limiting platform. An elastic member is arranged at the middle position between the limiting arm and the linkage frame. The position movement module drives the linkage frame, the vertical frame and the limiting arm to perform telescopic movement.

[0010] A first channel is reserved on the limiting platform. A parallel double-channel is milled on the inner edge of the first channel. A fan-shaped channel is milled on the outer contour of the limiting platform. A guiding seat is arranged at the position where the limiting arm extends into the parallel double-channel. The guiding seat performs telescopic movement with the parallel double-channel. A first linkage channel and a second linkage channel are milled on the limiting arm. A first telescopic seat is fixedly connected to the part of the linkage frame extending into the parallel double-channel. The first telescopic seat performs telescopic movement with the parallel double-channel. A second linkage plate is arranged at the part of the first telescopic seat deviating from the linkage frame. A continuous alveolar mouth pattern is milled on the side of the second linkage plate deviating from the first telescopic seat. The second linkage plate is in an embedded butt joint with the first linkage channel. An operation cavity and a second movable cavity are milled on the linkage frame.

[0011] As a preferred technical solution of a metal pipe detection device for rail transit, an operating member one is arranged on the side of the limiting cylinder. A first movable cavity is milled in the support. A first lead screw is hinged in the first movable cavity. A first thread sleeve is externally threaded on the first lead screw. The first thread sleeve is in threaded transmission with the movable table. A guiding column is fixedly connected to the fixed table. The guiding column penetrates through the movable table.

[0012] As a preferred technical solution of a metal pipe detection device for rail transit, a support arm is arranged on one side of the support. A scanner and an irradiator are arranged on the support arm. The cooperation of the scanner and the irradiator is used to detect the surface of the metal pipe.

[0013] As a preferred technical solution of a metal pipe detection device for rail transit, a cross column is fixedly connected to the side of the limiting arm close to the first linkage channel and the second linkage channel. The cross column is in an embedded butt joint with the operation cavity. The elastic member surrounds the cross column. One side of the elastic member is fixedly connected to the limiting arm. The other side of the elastic member is fixedly connected to the linkage frame.

[0014] As a preferred technical solution of a metal pipe detection device for rail transit, a first linkage plate is arranged on the cross column. A second thread sleeve is fixedly connected to the vertical frame. The second thread sleeve performs telescopic movement in the second movable cavity. A second lead screw is hinged in the second movable cavity. The second thread sleeve is in threaded connection with the second lead screw. An umbrella-shaped linkage member one is arranged at the part where the second lead screw extends into the operation cavity.

[0015] As a preferred technical solution of a metal pipe detection device for rail transit, a bearing column is hinged to the inner edge of the operation cavity. A first linkage disk and a second umbrella-shaped linkage member are arranged on the outer wall of the bearing column. Tooth groove patterns are milled on the hypotenuses of both the second umbrella-shaped linkage member and the first umbrella-shaped linkage member. The first umbrella-shaped linkage member and the second umbrella-shaped linkage member are engaged with each other. Tooth groove patterns are milled on the outer contour of the first linkage disk. The first linkage disk and the first umbrella-shaped linkage member do not touch each other.

[0016] As a preferred technical solution of a metal pipe detection device for rail transit, the position movement module includes a second telescopic seat, a first hinge column and a second hinge column. The second telescopic seat performs telescopic movement in a parallel double channel. A third linkage plate is arranged on the second telescopic seat. Tooth groove patterns are milled on the third linkage plate. The third linkage plate is in an embedded butt joint with the second linkage channel. The first hinge column is located at the middle position between the second linkage plate and the third linkage plate. The first hinge column is hinged to the inner edge of the parallel double channel.

[0017] As a preferred technical solution of a metal pipe detection device for rail transit, a second linkage disk is arranged outside the first hinge column. Tooth groove patterns are milled on the outside of the second linkage disk. The second linkage disk is engaged with both the third linkage plate and the second linkage plate at the same time. A fixed block is arranged on the inner edge of the fan-shaped channel. A second hinge column is arranged in the fixed block. A coupling is arranged at the part where the first hinge column extends into the fan-shaped channel. The second hinge column is arranged at the other part of the coupling.

[0018] As a preferred technical solution of a metal pipe detection device for rail transit, a third linkage disk is arranged outside the part where the second hinge column extends out of the fixed block. Tooth groove patterns are milled on the outer contour of the third linkage disk. A first transmission disk is hinged to the outer contour of the limit platform. A linkage ring is fixedly connected to the first transmission disk. Tooth groove patterns are milled on the edge position of the linkage ring. The linkage ring is engaged with the third linkage disk. A bearing frame is arranged on the outer contour of the limit platform. A second transmission disk is hinged to the bearing frame. Inclined tooth groove patterns are milled on the outside of the first transmission disk. Spiral patterns matching with the inclined tooth groove patterns are milled on the outside of the second transmission disk. The second transmission disk is engaged with the first transmission disk. An operating member two is arranged at the movable part of the second transmission disk.

[0019] As a preferred technical solution of a metal pipe detection device for rail transit, a second channel is milled on the limit platform. A notch is milled on the back of the limit platform. A protrusion is arranged on the side of the limiting cylinder facing the limit platform. The protrusion is adapted to the notch.

[0020] Advantages of the present invention:

[0021] 1. Through the coordinated control of the first operating part and the second operating part, and combined with the design of the telescopic movement module and the elastic part, the metal pipe detection equipment of this rail transit can flexibly adapt to metal pipes of different specifications and sizes, including straight metal pipes and metal pipes with docking plates, significantly improving the versatility and application range of the detection equipment;

[0022] 2. Through the linkage mechanism of the limiting arm, the linkage frame and the vertical frame, and the auxiliary function of the elastic part, the metal pipe detection equipment of this rail transit realizes the precise positioning and firm limiting of the metal pipe; especially for metal pipes with docking plates, through the double limiting design (the limiting arm fits with the docking plate and the vertical frame presses the plate surface), it effectively prevents the position deviation of the metal pipe during the detection process, ensuring the accuracy and reliability of the detection results;

[0023] 3. Relying on the movable bearing platform and the adjustable movable table design, and combined with the smooth guiding mechanism of the lead screw drive and the guiding column, the metal pipe detection equipment of this rail transit can quickly adapt to metal pipes of different lengths and shapes, with simple operation and high detection efficiency; at the same time, the matching design of the first operating part and the second operating part supports external operation, further improving the use convenience.

[0024] Other features and advantages of the present invention will be described in the subsequent specification, and part of them will become obvious from the specification or be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the structures specifically pointed out in the specification and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. Among them:

[0026] Figure 1 is the overall structural schematic diagram of the present invention.

[0027] Figure 2 is the back schematic diagram of the present invention.

[0028] Figure 3 is the schematic diagram of the limiting platform of the present invention.

[0029] Figure 4 is the half-sectional view of the limiting platform of the present invention.

[0030] Figure 5 is based on the present invention Figure 4 schematic diagram at X in

[0031] Figure 6 Schematic diagram of the fan-shaped channel of the present invention.

[0032] Figure 7 Based on the present invention Figure 6 Schematic diagram at position Y in

[0033] Figure 8 Schematic diagram of the limiting arm of the present invention.

[0034] Figure 9 Schematic diagram of the limit of the metal tube with a docking plate according to the present invention.

[0035] Figure 10 Schematic diagram of the limit of the straight metal tube according to the present invention.

[0036] Reference numerals: 10, bracket; 11, fixed table; 12, movable table; 13, bearing table; 14, limiting table; 15, limiting cylinder; 16, operating member 1; 17, movable cavity 1; 18, lead screw 1; 19, nut sleeve 1; 110, guiding column; 20, support arm; 21, scanner; 22, irradiator; 30, limiting table; 310, channel 1; 311, parallel double channel; 312, fan-shaped channel; 313, channel 2; 314, notch; 31, limiting arm; 320, guiding seat; 321, first linkage channel; 322, second linkage channel; 323, cross column; 324, linkage plate 1; 32, linkage frame; 330, telescopic seat 1; 331, linkage plate 2; 332, operating cavity; 333, movable cavity 2; 334, lead screw 2; 335, umbrella-shaped linkage member 1; 336, bearing column; 337, umbrella-shaped linkage member 2; 338, linkage disk 1; 33, vertical frame; 340, nut sleeve 2; 34, elastic member; 35, position movement module; 360, telescopic seat 2; 361, hinge column 1; 362, hinge column 2; 363, linkage plate 3; 364, linkage disk 2; 365, fixed block; 366, coupling; 367, linkage disk 3; 368, drive disk 1; 369, drive disk 2; 3610, linkage ring; 3611, bearing frame; 3612, operating member 2. Detailed implementation manners

[0037] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be given in conjunction with the accompanying drawings of the specification.

[0038] In the following description, many specific details are set forth to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0039] Second, the "one embodiment" or "embodiment" referred to herein means a specific feature, structure or characteristic that may be included in at least one implementation manner of the present invention. The "in one embodiment" that appears in different places in this specification does not all refer to the same embodiment, nor is it an embodiment that is separate or selectively exclusive to other embodiments.

[0040] Thirdly, the present invention is described in detail in conjunction with schematic diagrams. When detailing the embodiments of the present invention, for the convenience of explanation, the cross-sectional views showing the device structure will be locally enlarged in a non-general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present invention here. In addition, the three-dimensional spatial dimensions of length, width and depth should be included in actual production.

[0041] Embodiment, referring to Figure 1 and 2 , a metal pipe detection device for rail transit, including a bracket 10, a bearing platform 13, a limiting platform 14, a limiting cylinder 15 and a support arm 20;

[0042] A fixed platform 11 is fixedly connected to the inner edge of the bracket 10, and a movable platform 12 moves telescopically along the inner edge of the bracket 10. A bearing platform 13 is arranged on the opposite surfaces of the fixed platform 11 and the movable platform 12. The bearing platform 13 is movable, which is convenient for detecting different surfaces. A limiting platform 14 is arranged on the bearing platform 13, and a limiting cylinder 15 is arranged on the inner edge of the limiting platform 14;

[0043] An operating member 16 is arranged on the side of the limiting cylinder 15. The operating member 16 can be adapted to an operating member 3612, so as to control the operating member 3612 outside. The operating member 3612 and the operating member 16 can be in a meshing or transmission and friction manner, etc., and the manner can be changed under different applications. An activity cavity 17 is milled in the bracket 10, and a lead screw 18 is hinged in the activity cavity 17. A thread sleeve 19 is externally threaded on the lead screw 18, and the thread sleeve 19 is in threaded transmission with the movable platform 12. A guiding column 110 is fixedly connected to the fixed platform 11, and the guiding column 110 penetrates through the movable platform 12;

[0044] The lead screw 18 is externally connected to a motor. When the lead screw 18 rotates, it drives the thread sleeve 19 to move up and down in position. The guiding column 110 can assist in ensuring the smoothness of the movable platform 12 during the lifting movement. The movable platform 12 can be applied to metal pipes of different lengths during the lifting movement.

[0045] Referring to Figure 1 , a support arm 20 is arranged on one side of the bracket 10, and a scanner 21 and an irradiator 22 are arranged on the support arm 20. The cooperation of the scanner 21 and the irradiator 22 is used to detect the surface of the metal pipe.

[0046] Referring to Figure 2 and 3, a limiting platform 30 is installed in the limiting cylinder 15, a limiting arm 31 and a linkage frame 32 are arranged on the limiting platform 30, a position movement module 35 is arranged at the peripheral position of the limiting platform 30, and a vertical frame 33 is arranged on the linkage frame 32; the limiting arm 31 and the linkage frame 32 perform telescopic movement on the limiting platform 30; an elastic member 34 is arranged at the middle position between the limiting arm 31 and the linkage frame 32; the position movement module 35 drives the linkage frame 32, the vertical frame 33 and the limiting arm 31 to perform telescopic movement.

[0047] Refer to Figure 3 , 4 , 5 and 8, a first channel 310 is reserved on the limiting platform 30, a parallel double-channel 311 is milled on the inner edge of the first channel 310, a sector channel 312 is milled on the outer contour of the limiting platform 30, a guiding seat 320 is arranged at the position where the limiting arm 31 extends into the parallel double-channel 311, the guiding seat 320 performs telescopic movement with the parallel double-channel 311, a first linkage channel 321 and a second linkage channel 322 are milled on the limiting arm 31, a first telescopic seat 330 is fixedly connected to the part of the linkage frame 32 extending into the parallel double-channel 311, the first telescopic seat 330 performs telescopic movement with the parallel double-channel 311, a second linkage plate 331 is arranged at the part of the first telescopic seat 330 deviating from the linkage frame 32, a continuous alveolar notch pattern is milled on one side of the second linkage plate 331 deviating from the first telescopic seat 330, and the second linkage plate 331 is in a fitting connection with the first linkage channel 321; an operation cavity 332 and a second movable cavity 333 are milled on the linkage frame 32;

[0048] When the first telescopic seat 330 performs telescopic movement, it will drive the linkage frame 32 to move in the parallel double-channel 311 together. When the linkage frame 32 performs telescopic movement, the elastic member 34 causes the position of the limiting arm 31 to change. At this moment, the limiting arm 31 and the guiding seat 320 will also perform telescopic movement in the parallel double-channel 311; under the shape characteristics of the parallel double-channel 311, it is ensured that the limiting arm 31 and the linkage frame 32 have a guiding effect during telescopic movement.

[0049] Refer to Figure 4 , 5With respect to FIGS. 7 and 8, on one side of the limiting arm 31 close to the first linkage channel 321 and the second linkage channel 322, a cross column 323 is fixedly connected. The cross column 323 is fitted and docked with the operation cavity 332. An elastic member 34 is wound around the outside of the cross column 323. One side of the elastic member 34 is fixedly connected to the limiting arm 31, and the other side of the elastic member 34 is fixedly connected to the linkage frame 32. A first linkage plate 324 is arranged on the cross column 323. A second wire sleeve 340 is fixedly connected to the vertical frame 33. The second wire sleeve 340 moves telescopically in the second movable cavity 333. A second lead screw 334 is hinged in the second movable cavity 333. The second wire sleeve 340 is threadedly connected to the second lead screw 334. At the part where the second lead screw 334 extends into the operation cavity 332, a first umbrella-shaped linkage member 335 is arranged. A bearing column 336 is hinged to the inner edge of the operation cavity 332. A first linkage disk 338 and a second umbrella-shaped linkage member 337 are arranged on the outer wall of the bearing column 336. Tooth groove patterns are milled on the hypotenuse of both the second umbrella-shaped linkage member 337 and the first umbrella-shaped linkage member 335. The first umbrella-shaped linkage member 335 and the second umbrella-shaped linkage member 337 are engaged. Tooth groove patterns are milled on the outer contour of the first linkage disk 338. The first linkage disk 338 and the first umbrella-shaped linkage member 335 do not touch each other;

[0050] Before the metal pipe is placed for detection, there is a certain distance between the first linkage plate 324 and the first linkage disk 338. When the metal pipe is placed, the linkage frame 32 drives the elastic member 34 and the limiting arm 31 to move together. When the position of the limiting arm 31 changes, it can drive the cross column 323 and the first linkage plate 324 to change their positions together. After the limiting arm 31 touches the docking disk of the metal pipe, it will stop moving. At this moment, the cross column 323 and the first linkage plate 324 also stop moving. At this moment, the linkage frame 32 continues to drive the vertical frame 33, and the elastic member 34 is pressed. The self-acting force of the elastic member 34 makes the limiting arm 31 closely touch the docking disk of the metal pipe, so as to limit the state of the metal pipe. The vertical frame 33 moves to the position of the docking disk of the metal pipe, and the first linkage disk 338 gradually approaches and engages with the first linkage plate 324. At this moment, the first linkage disk 338 rotates, and the second umbrella-shaped linkage member 337 rotates accordingly and engages with the first umbrella-shaped linkage member 335, causing the second lead screw 334 to rotate. At this moment, the second lead screw 334 drives the second wire sleeve 340 to move up and down. The vertical frame 33 moves onto the docking disk of the metal pipe and closely touches the docking disk of the metal pipe with the limiting platform 30 to perform secondary limitation on the metal pipe;

[0051] Relying on the mutual transmission of the first linkage plate 324, the first linkage disk 338, the second umbrella-shaped linkage member 337, the first umbrella-shaped linkage member 335, the second lead screw 334 and the second wire sleeve 340, after the limiting arm 31 touches the docking disk of the metal pipe, the vertical frame 33 can press the docking disk of the metal pipe to ensure that the metal pipe will not shift during the inspection process and affect the accuracy of the detection result.

[0052] Refer to Figure 6 and 7, the position movement module 35 includes a second telescopic seat 360, a first hinge column 361 and a second hinge column 362. The second telescopic seat 360 telescopically moves in the parallel double-channel 311. A third linkage plate 363 is installed on the second telescopic seat 360. The third linkage plate 363 is milled with alveolar notch patterns. The third linkage plate 363 is in an embedded butt joint with the second linkage channel 322. The first hinge column 361 is located in the middle of the second linkage plate 331 and the third linkage plate 363. The first hinge column 361 is hinged to the inner edge of the parallel double-channel 311. A second linkage disk 364 is installed outside the first hinge column 361. The second linkage disk 364 is milled with alveolar notch patterns on the outside. The second linkage disk 364 is engaged with both the third linkage plate 363 and the second linkage plate 331 at the same time. A fixed block 365 is installed on the inner edge of the fan-shaped channel 312. A second hinge column 362 is arranged in the fixed block 365. A coupling 366 is installed at the part where the first hinge column 361 extends into the fan-shaped channel 312. The second hinge column 362 is arranged at the other part of the coupling 366. A third linkage disk 367 is installed outside the part where the second hinge column 362 extends out of the fixed block 365. The outer contour of the third linkage disk 367 is milled with alveolar notch patterns. A first drive disk 368 is hinged to the outer contour of the limit platform 30. A linkage ring 3610 is fixedly connected to the first drive disk 368. The edge position of the linkage ring 3610 is milled with alveolar notch patterns. The linkage ring 3610 is engaged with the third linkage disk 367. A carrier 3611 is arranged on the outer contour of the limit platform 30. A second drive disk 369 is hinged to the carrier 3611. The outer surface of the first drive disk 368 is milled with inclined alveolar notch patterns. The outer surface of the second drive disk 369 is milled with matching spiral patterns. The second drive disk 369 is engaged with the first drive disk 368. An operating member two 3612 is arranged at the movable part of the second drive disk 369;

[0053] Among them, by controlling the operating member two 3612, the second drive disk 369 can perform a revolving motion. At this moment, the first drive disk 368 is driven to perform a revolving motion, the linkage ring 3610 is driven to perform a revolving motion, several third linkage disks 367 are driven to perform a revolving motion together, the second hinge column 362 is driven to perform a revolving motion. When the second hinge column 362 is revolving, the first hinge column 361 and the second linkage disk 364 are driven to perform a revolving motion by means of the coupling 366. During the revolving motion of the second linkage disk 364, it is engaged with both the second linkage plate 331 and the third linkage plate 363 at the same time, so that the first telescopic seat 330 and the second telescopic seat 360 move away from each other. At this moment, the first telescopic seat 330 and the linkage frame 32 move towards the position of the metal pipe, and the second telescopic seat 360 moves in the other direction;

[0054] When detecting a straight metal tube, the operating member 2 (3612) is manipulated in an opposite movement manner, causing the lead screw 2 (334) to drive the telescopic seat 2 (360) to move towards the position of the metal tube, while the telescopic seat 1 (330) moves away from the position of the metal tube. The telescopic seat 2 (360) acts on the guiding seat (320), causing the guiding seat (320) to move towards the position of the metal tube, thereby limiting the metal tube. The linkage plate 2 (331), the telescopic seat 1 (330), and the linkage frame (32) do not face the metal tube, and the elastic member (34) is in a stretched state at this moment, and the position of the metal tube is limited by the limiting arm (31).

[0055] By relying on the bidirectional movement of the operating member 2 (3612), it is possible to perform limit detection on a metal tube with a docking plate and also perform limit detection on a straight metal tube, enabling this detection to be applied to metal tubes of different sizes and specifications.

[0056] Refer to Figure 4 , a second channel (313) is milled on the limit table (30). The second channel (313) can be used to mount the limit table (30) on the limiting cylinder (15). A notch (314) is milled on the back of the limit table (30). A protrusion is provided on the surface of the limiting cylinder (15) facing the limit table (30), and the protrusion is adapted to the notch (314), so that the limit table (30) is not likely to shift in position when installed at the designated position.

[0057] Through the above, it can be achieved that the operating member 1 (16) can control the operating member 2 (3612), enabling the drive disk 2 (369) to perform a rotary motion. At this moment, the drive disk 1 (368) is driven to perform a rotary motion, the linkage ring (3610) is driven to perform a rotary motion, several drive disks 3 (367) are driven to perform a rotary motion together, the hinge column 2 (362) is driven to perform a rotary motion. During the rotary motion of the hinge column 2 (362), the hinge column 1 (361) and the drive disk 2 (364) perform a rotary motion by relying on the coupling (366). During the rotary motion of the drive disk 2 (364), it engages with the linkage plate 2 (331) and the linkage plate 3 (363) simultaneously, causing the telescopic seat 1 (330) and the telescopic seat 2 (360) to move away from each other. At this moment, the telescopic seat 1 (330) and the linkage frame (32) move towards the position of the metal tube, and the telescopic seat 2 (360) moves in the other direction;

[0058] The linkage frame 32 links the elastic member 34 to move together with the limiting arm 31. When the limiting arm 31 changes its position, it can link the horizontal column 323 and the linkage plate 1 324 to change its position. After the limiting arm 31 touches the docking plate of the metal pipe, it stops moving. The horizontal column 323 and the linkage plate 1 324 also stop moving at this moment. The linkage frame 32 continues to link the vertical frame 33 at this moment. The elastic member 34 is pressed. The self-action force of the elastic member 34 makes the limiting arm 31 touch the docking plate of the metal pipe closely, thereby limiting the state of the metal pipe. 3 moves to the docking plate position of the metal pipe, and the linkage plate 1 338 gradually approaches the linkage plate 1 324 and engages with it. At this time, the linkage plate 1 338 rotates, and the umbrella-shaped linkage member 2 337 rotates accordingly and engages with the umbrella-shaped linkage member 1 335, causing the lead screw 2 334 to rotate. At this time, the lead screw 2 334 links the wire sleeve 2 340 to move up and down. The vertical frame 33 moves to the docking plate of the metal pipe and closely contacts the docking plate of the metal pipe with the limit platform 30 to perform secondary limitation on the metal pipe and ensure the stability of the metal pipe during inspection.

[0059] When inspecting a straight metal tube, the second operating member 3612 is manipulated in the opposite direction, causing the second lead screw 334 to link the second telescopic seat 360 to move toward the metal tube, while the first telescopic seat 330 moves away from the metal tube. The second telescopic seat 360 acts on the guide seat 320, causing the guide seat 320 to move toward the metal tube, thereby restraining the metal tube. The second linkage plate 331, the first telescopic seat 330, and the linkage frame 32 are not facing the metal tube.

[0060] The metal pipe at a defined position is inspected by means of a scanner 21 and an illuminator 22;

[0061] The outer contour of the metal tube with the docking plate is limited by the limiting arm 31, and then the linkage frame 32 acts on the vertical frame 33 to limit the plate surface, so that the center position of the metal tube with the docking plate is more accurate during detection, and it is not easy to deviate in the position in the later stage, and it is convenient for the overall placement. At the same time, relying on the action of the elastic member 34, the metal tube with the docking plate can further improve its stability performance when the center of gravity is unstable during limitation, thereby improving the convenience and accuracy of detection.

[0062] It will be understood that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but for those of ordinary skill having the benefit of this disclosure, the development effort will be a routine task of design, fabrication, and production without undue experimentation.

[0063] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A metal pipe detection device for rail transit, characterized in that: It includes a bracket, a bearing platform, a limiting platform, a limiting cylinder and a support arm; A fixed platform is fixedly connected to the inner edge of the bracket, a movable platform moves telescopically along the inner edge of the bracket, a bearing platform is arranged on the opposite surfaces of the fixed platform and the movable platform, a limiting platform is arranged on the bearing platform, and a limiting cylinder is arranged on the inner edge of the limiting platform; A limiting platform is arranged in the limiting cylinder, a limiting arm and a linkage frame are arranged on the limiting platform, a position movement module is arranged at the peripheral position of the limiting platform, and a vertical frame is arranged on the linkage frame; the limiting arm and the linkage frame move telescopically on the limiting platform; an elastic member is arranged at the middle position between the limiting arm and the linkage frame; the position movement module drives the linkage frame, the vertical frame and the limiting arm to perform telescopic movement; A channel one is reserved on the limiting platform, a parallel double-channel is milled on the inner edge of the channel one, a sector channel is milled on the outer contour of the limiting platform, a guiding seat is arranged at the position where the limiting arm extends into the parallel double-channel, the guiding seat moves telescopically with the parallel double-channel, a first linkage channel and a second linkage channel are milled on the limiting arm, a telescopic seat one is fixedly connected to the part of the linkage frame extending into the parallel double-channel, the telescopic seat one moves telescopically with the parallel double-channel, a linkage plate two is arranged at the part of the telescopic seat one deviating from the linkage frame, a continuous alveolar notch pattern is milled on one side of the linkage plate two deviating from the telescopic seat one, the linkage plate two is in an embedded butt joint with the first linkage channel, and an operation cavity and a movable cavity two are milled on the linkage frame; A cross column is fixedly connected to one side of the limiting arm close to the first linkage channel and the second linkage channel, the cross column is in an embedded butt joint with the operation cavity, the elastic member surrounds the cross column, one side of the elastic member is fixedly connected to the limiting arm, and the other side of the elastic member is fixedly connected to the linkage frame; The position movement module includes a telescopic seat two, a hinge column one and a hinge column two, the telescopic seat two moves telescopically in the parallel double-channel, a linkage plate three is arranged on the telescopic seat two, a alveolar notch pattern is milled on the linkage plate three, the linkage plate three is in an embedded butt joint with the second linkage channel, the hinge column one is located at the middle position between the linkage plate two and the linkage plate three, and the hinge column one is hinged to the inner edge of the parallel double-channel; A linkage disk two is arranged outside the hinge column one, a alveolar notch pattern is milled outside the linkage disk two, the linkage disk two is engaged with both the linkage plate three and the linkage plate two at the same time, a fixed block is arranged on the inner edge of the sector channel, a hinge column two is arranged in the fixed block, a coupling is arranged at the part where the hinge column one extends into the sector channel, and the hinge column two is arranged at the other part of the coupling; A linkage disk three is installed outside the part where the hinge column two extends out of the fixed block. The outer contour of the linkage disk three is milled with alveolar notch patterns. A transmission disk one is hinged at the outer contour of the limit table. A linkage ring is fixedly connected to the transmission disk one. The edge position of the linkage ring is milled with alveolar notch patterns. The linkage ring engages with the linkage disk three. A bearing frame is arranged at the outer contour of the limit table. A transmission disk two is hinged on the bearing frame. The outer part of the transmission disk one is milled with oblique alveolar notch patterns. The outer part of the transmission disk two is milled with spiral patterns that match it. The transmission disk two engages with the transmission disk one. An operating part two is arranged at the movable part of the transmission disk two.

2. The metal pipe detection device for rail transit according to claim 1, characterized in that: An operating part one is installed at the side of the limiting cylinder. An activity cavity one is milled in the support. A lead screw one is hinged in the activity cavity one. A thread sleeve one is threadedly connected to the outside of the lead screw one. The thread sleeve one is in threaded transmission with the movable table. A guiding column is fixedly connected to the fixed table. The guiding column penetrates through the movable table.

3. The metal pipe detection device for rail transit according to claim 1, characterized in that: A support arm is installed at one side of the support. A scanner and an irradiator are installed on the support arm. The cooperation of the scanner and the irradiator is used to detect the surface of the metal pipe.

4. The metal pipe detection device for rail transit according to any one of claims 1-3, characterized in that: A linkage plate one is arranged on the cross column. A thread sleeve two is fixedly connected to the vertical frame. The thread sleeve two moves telescopically in the activity cavity two. A lead screw two is hinged in the activity cavity two. The thread sleeve two is threadedly connected to the lead screw two. An umbrella-shaped linkage part one is arranged at the part where the lead screw two extends into the operation cavity.

5. The metal pipe detection device for rail transit according to claim 1, wherein: A bearing column is hinged at the inner edge of the operation cavity. A linkage disk one and an umbrella-shaped linkage part two are arranged on the outer wall of the bearing column. The hypotenuses of the umbrella-shaped linkage part two and the umbrella-shaped linkage part one are both milled with alveolar notch patterns. The umbrella-shaped linkage part one engages with the umbrella-shaped linkage part two. The outer contour of the linkage disk one is milled with alveolar notch patterns. The linkage disk one does not touch the umbrella-shaped linkage part one.

6. The metal pipe detection device for rail transit according to claim 1, wherein: A channel two is milled on the limit table. A notch is milled on the back of the limit table. A protrusion is installed on the side of the limiting cylinder facing the limit table. The protrusion is adapted to the notch.

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