Pipeline coating analysis device

Abstract

The utility model discloses a pipeline coating analyzing device, which comprises a rack, a plurality of connecting rods, a plurality of connecting rods and a plurality of connecting rods, the positioning assembly and the rotating assembly comprise fastening units and two positioning circular truncated cones, positioning through holes are formed in the two positioning circular truncated cones, and the rotating assembly drives one of the positioning circular truncated cones to rotate; the detection assembly comprises a fixing column, a sliding block, a driving unit, a fixing block and a connecting seat, the connecting seat and the fixing block are hinged through a connecting rod, the connecting seat and the sliding block are hinged through a connecting rod, and a detection probe is arranged on the connecting seat; the lifting assembly drives the movable frame to move in the vertical direction. According to the pipeline coating analysis device, after the coaxial lead is clamped between the two positioning circular truncated cones through the positioning assembly, the lifting assembly drives the detection frame to ascend and descend, so that the detection probe is located in the pipeline, and the rotating assembly is matched to drive the positioning circular truncated cones and the pipeline to rotate, so that the detection probe can rotate and axially move relative to the pipeline; the number of detection probes is reduced, the cost is reduced, and the detection range is expanded.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline coating analysis, in particular to a pipeline coating analysis device. Background Art

[0002] PTEF coating is a thin film made of PTEF material, which is coated on the substrate through a special process. It is widely used in many industrial fields such as food, medical, automotive, electronics, and construction. For example, in the chemical, petroleum, and pharmaceutical industries, PTFE coating is applied to the inner wall of the pipeline, which can significantly improve the corrosion resistance, temperature resistance and non-stickiness of the pipeline, reduce scale and blockage inside the pipeline, and improve efficiency.

[0003] After PTEF coating is applied to the interior of a pipe, a coating analyzer is typically used to measure the coating thickness. For example, Chinese utility model patent publication number CN221173340U describes a pipeline coating analyzer that uses multiple analysis probes to analyze the inner coating of the pipe. A telescopic mechanism enables a roller to contact the coating on the inner wall of the pipe, allowing it to move through pipes of varying inner diameters and analyze the coating at different locations.

[0004] However, in order to detect multiple locations in the above-mentioned analytical instrument, multiple analytical probes need to be set up, which increases the cost of the device. Moreover, during detection, although the analytical probe can move along the axial direction of the pipeline, the radial position is relatively fixed, resulting in a limited analysis range and an inability to perform a comprehensive analysis of the coating inside the pipeline. In addition, during the analysis process, when locations where the internal coating is too thick or too thin are detected, it is impossible to make corresponding marks for the unqualified locations. As a result, once it is detected that the coating thickness is not within the qualified range, the device needs to be shut down, and the unqualified locations need to be manually marked before continuing the detection, resulting in the entire detection process being lengthy and the manual marking operation being cumbersome.

[0005] Therefore, it is necessary to improve the pipeline coating analysis device in the prior art. Utility Model Content

[0006] The purpose of the utility model is to overcome the defects in the prior art and provide a pipeline coating analysis device with a simplified structure, reduced costs, expanded detection range, and the ability to automatically mark unqualified locations to improve detection efficiency.

[0007] To achieve the above technical effects, the technical solution of the present invention is: a pipeline coating analysis device, comprising:

[0008] A frame, wherein a movable frame is provided on the frame;

[0009] A positioning assembly and a rotating assembly, wherein the positioning assembly includes a fastening unit and two positioning truncated tables arranged opposite to each other with their coaxial centerlines and their axis lines extending in the vertical direction, wherein both positioning truncated tables are provided with coaxial positioning through holes, wherein the fastening unit drives the two positioning truncated tables to move relative to each other in the vertical direction, and the rotating assembly drives one of the positioning truncated tables to rotate around its own axis line;

[0010] A detection assembly, the detection assembly comprising a fixed column extending in a vertical direction and fixed to the frame, a slider sliding in a vertical direction on the fixed column, a driving unit driving the slider to slide along the fixed column, a fixed block fixed to the fixed column, and a connecting seat provided between the slider and the fixed block, the connecting seat and the fixed block, and the connecting seat and the slider being hinged by a connecting rod, and a horizontal and outward-facing detection probe being provided on the connecting seat;

[0011] A lifting assembly drives the movable frame to move in a vertical direction between an access position and a detection position. In the access position, the positioning assembly is arranged above the detection assembly. In the detection position, the pipe clamped between the two positioning stages is sleeved outside the detection assembly.

[0012] Preferably, in order to facilitate driving the pipe clamped between the two positioning stages to rotate around its own axis, the upper positioning stage is connected to the output end of the fastening unit, and the lower positioning stage is connected to the output end of the rotating component.

[0013] Preferably, in order to drive the positioning table to rotate, the rotating assembly includes a rotating motor, the output end of the rotating motor is connected to a driving wheel coaxially, the driving wheel is connected to a cylindrical driven wheel through a synchronous belt drive, and the driven wheel is connected to the positioning table coaxially and rotates around its own axis on the movable frame.

[0014] Preferably, in order to ensure that the positioning cone is relatively fixedly connected to the coaxial centerline of the pipeline, the fastening unit includes a fastening cylinder and a fastening bearing, the cylinder barrel of the fastening cylinder is arranged in the vertical direction and fixed on the movable frame, and the piston rod is connected to the upper positioning cone of the two positioning cones through a bearing.

[0015] Preferably, in order to avoid contact between the fastening cylinder and the top of the detection assembly, the fastening cylinder is located above the side of the positioning through hole.

[0016] Preferably, in order to avoid the detection probe from contacting the inner wall of the pipeline, which causes wear on the end of the detection probe after the pipeline and the detection probe slide relative to each other, the fixed column is coaxial with the positioning through hole, and a plurality of connecting seats are arranged between the fixed block and the slider. The connecting seats are distributed in a circular array with the axis of the positioning cone as the center line. The side of the connecting seat away from the axis of the positioning through hole is the installation surface. The connecting seat includes a detection seat and a balancing seat. The detection probe is arranged on the detection seat and is located on one side of the installation surface and the axis of the positioning through hole.

[0017] Preferably, in order to reduce the wear of the coating inside the pipeline, a ball protruding from the mounting surface is provided on the balancing seat, and the ball rotates around its own spherical center on the balancing seat.

[0018] Preferably, in order to facilitate automatic marking of locations where the pipeline coating thickness is unqualified, a marking unit is also provided on the detection seat, and the marking unit includes a marking pen and a telescopic unit. The direction of the marking pen is consistent with the direction of the detection probe, and the telescopic unit drives the marking pen to move along its own axis.

[0019] Preferably, in order to facilitate the replacement of the marking pen, the marking pen is detachably arranged on the detection seat.

[0020] Preferably, in order to drive the movable frame to move up and down, the lifting assembly includes a lifting motor fixed on the frame, the output shaft of the lifting motor is connected to a screw rod coaxially, the screw rod is threadedly connected to a screw sleeve, and the screw sleeve is fixedly connected to the movable frame.

[0021] To sum up, compared with the existing technology, the pipeline coating analysis device of the present invention uses a positioning component to clamp the coaxial center line between two positioning round tables, and the lifting component drives the detection frame to move up and down, so that the detection probe is located inside the pipeline. The rotating component drives the positioning round table and the pipeline to rotate, so that the detection probe can rotate and move axially relative to the pipeline. While reducing the number of detection probes and lowering costs, it realizes comprehensive detection of the internal coating of the pipeline and expands the detection range. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the utility model;

[0023] Figure 2 This is a schematic structural diagram of another usage state of the utility model;

[0024] Figure 3 yes Figure 2 Cross-sectional structural diagram;

[0025] Figure 4 yes Figure 3A magnified view of part A;

[0026] Figure 5 This is a schematic diagram of the connection structure of the positioning component and the rotating component of the utility model;

[0027] Figure 6 yes Figure 5 Explosion diagram of

[0028] Figure 7 It is a structural diagram of the detection component of the utility model;

[0029] Figure 8 This is a schematic diagram of the connection structure between the detection base and the marking unit of the utility model;

[0030] Figure 9 yes Figure 8 Explosion diagram of

[0031] Figure 10 yes Figure 8 Explosion diagram from another perspective;

[0032] In the figure: 1. Frame; 11. Movable frame; 111. Movable plate; 112. Guide sleeve; 12. Bottom plate; 13. Pillar; 14. Top plate; 2. Positioning assembly; 21. Fastening unit; 211. Fastening cylinder; 212. Fastening bearing; 213. Fastening frame; 214. Guide rod; 215. Guide sleeve; 216. Pressing ring; 22. Positioning table; 221. Positioning through hole; 3. Rotating assembly; 31. Rotating motor; 32. Driving pulley; 33. Synchronous belt; 34. Driven pulley; 35. Support bearing; 36. Rotating frame; 4. Detection assembly; 41. Fixed column; 411. Base; 42. Slider; 43. Drive unit; 44. Fixed block; 45. Connecting seat; 451. Detection seat; 4511. First circular hole; 4512. Second circular hole; 452. Balancing seat; 4521. Ball bearing; 46. Connecting rod; 461. Articulated seat; 47. Detection probe; 48. Marking unit; 481. Marking pen; 482. Compression spring; 483. Telescopic cylinder; 484. Translation plate; 485. Translation rod; 486. Convex cover; 5. Lifting assembly; 51. Lifting motor; 52. Screw; 53. Screw sleeve; 54. Bushing; 6. Pipeline. DETAILED DESCRIPTION

[0033] The following embodiments are used to further describe the specific embodiments of the present invention in conjunction with the accompanying drawings and examples. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0034] like Figures 1-10 As shown, the pipeline coating analysis device of the present invention includes:

[0035] Frame 1, on which a movable frame 11 is provided;

[0036] The positioning assembly 2 and the rotating assembly 3 are provided. The positioning assembly 2 includes a fastening unit 21 and two positioning truncated tables 22 arranged coaxially and with their axes extending in the vertical direction. The two positioning truncated tables 22 are provided with positioning through holes 221 coaxially. The fastening unit 21 drives the two positioning truncated tables 22 to move relative to each other in the vertical direction. The rotating assembly 3 drives one of the positioning truncated tables 22 to rotate around its own axis.

[0037] The detection assembly 4 includes a fixed column 41 extending in the vertical direction and fixed to the frame 1, a slider 42 sliding in the vertical direction on the fixed column 41, a driving unit 43 driving the slider 42 to slide along the fixed column 41, a fixed block 44 fixed to the fixed column 41, and a connecting seat 45 provided between the slider 42 and the fixed block 44. The connecting seat 45 and the fixed block 44, as well as the connecting seat 45 and the slider 42, are hingedly connected by a connecting rod 46. A horizontal and outward-facing detection probe 47 is provided on the connecting seat 45;

[0038] The lifting assembly 5 drives the movable frame 11 to move in the vertical direction between the access position and the detection position. In the access position, the positioning assembly 2 is arranged above the detection assembly 4. In the detection position, the pipe 6 clamped between the two positioning stages 22 is sleeved outside the detection assembly 4.

[0039] When the coating analysis device of the present invention is used, the movable frame 11 is first adjusted to the access position by the lifting assembly 5. Figure 1 As shown, the positioning component 2 is located above the detection component 4, and the two positioning stages 22 are driven to move away from each other in the vertical direction by the fastening unit 21 (in order to facilitate the description of the two positioning stages 22, the positioning stage 22 located below is the lower positioning stage 22, and the positioning stage 22 located above is the upper positioning stage 22), so that the distance between the two is greater than the length of the pipe 6 to be detected; at the same time, the driving unit 43 drives the slider 42 along the fixed column 41 away from the fixed block 44 to reduce the size of the detection component 4 in the horizontal direction, so that the subsequent pipe 6 can be installed outside the detection component 4.

[0040] The pipe 6 is placed vertically on the lower positioning table 22, and the outer diameter of one end and the outer diameter of the other end of the two positioning tables 22 are respectively larger than the inner diameter of the pipe 6 and smaller than the inner diameter of the pipe 6, so that after the pipe 6 is placed vertically on the lower positioning table 22, it can maintain a coaxial centerline with the lower positioning table 22; then, the fastening unit 21 controls the two positioning tables 22 to approach each other, so that the ends with smaller outer diameters of the two positioning tables 22 can be inserted into the inner side of the pipe 6 from both ends of the pipe 6, respectively, until the circumferential outer edge of the positioning table 22 abuts against the pipe 6, so that the pipe 6 is clamped between the two positioning tables 22.

[0041] Afterwards, the movable frame 11 is controlled by the lifting assembly 5 to move downward to the position as shown in FIG. Figure 2 and Figure 3 position, that is, the detection position. In the detection position, the detection component 4 is located on the inner side of the pipe 6, and then the detection component 4 is in operation, and the slider 42 is driven by the driving unit 43 to slide along the fixed column 41, reducing the distance between the slider 42 and the fixed block 44, so that the two connecting rods 46 rotate, acting on the connecting seat 45, so that the detection probe 47 on the connecting seat 45 is close to the circumferential inner wall of the pipe 6, thereby performing thickness analysis and detection on the PTFE coating on the inner wall of the pipe 6. Preferably, the detection probe 47 is a non-contact probe, which can avoid contamination and wear caused by contact with the inner wall of the pipe 6 during the detection process. The non-contact probe can use a laser probe, an ultrasonic probe or an infrared probe to measure the coating.

[0042] In the above case, the rotating component 3 can drive the two positioning stages 22 to rotate, and then drive the pipe 6 clamped between the two positioning stages 22 to rotate. The lifting component 5 can drive the movable frame 11 to move up and down, and then drive the pipe 6 to move along its own axis. In this way, axial and radial movement between the pipe 6 and the detection probe 47 is realized, and the detection range of the detection probe 47 can be expanded, and a comprehensive detection of the internal coating of the pipe 6 can be achieved. It is also beneficial to reduce the number of detection probes 47, thereby reducing costs.

[0043] After the inspection is completed, the movable frame 11 is raised to the access position by the lifting assembly 5 , and then the fastening unit 21 increases the distance between the two positioning round platforms 22 , thereby facilitating the removal of the inspected pipe 6 from the lower positioning round platform 22 .

[0044] Specifically, the frame 1 of the present invention is as follows Figures 1-4 As shown, the frame 1 includes a horizontal base plate 12, above which are fixedly provided pillars 13 distributed in a rectangular array and extending in a vertical direction, and a horizontal top plate 14 is fixed on the top of the pillars 13; there is also a movable frame 11 between the base plate 12 and the top plate 14, and the movable frame 11 includes a horizontal movable plate 111, and the movable plate 111 is fixed with a guide sleeve 112 extending in a vertical direction and slidingly fitting with the pillars 13 in a one-to-one correspondence, and the movable plate 111 is also provided with a movable through hole, which is coaxial with the positioning through hole 221 and the outer diameter of the movable through hole is larger than the outer diameter of the positioning through hole 221.

[0045] A further improvement is that the lifting assembly 5 includes a lifting motor 51 fixed on the frame 1, the output shaft of the lifting motor 51 is coaxially connected to a screw 52, ​​the screw 52 is threadedly connected to a screw sleeve 53, and the screw sleeve 53 is fixedly connected to the movable frame 11.

[0046] Specifically, such as Figure 2 As shown, the lifting motor 51 is fixed below the top plate 14 and is positioned downward. The screw sleeve 53 is fixedly connected to the movable plate 111 along its axis. A shaft sleeve 54 is fixed above the bottom plate 12. The bottom end of the screw rod 52 rotates around its own axis on the inner side of the shaft sleeve 54. With the above structure, when the lifting motor 51 is started, it drives the screw rod 52 to rotate around its own axis under the guidance of the shaft sleeve 54. The screw sleeve 53 acts on the screw sleeve 53, and through the sliding fit of the guide sleeve 112 and the support 13, the movable plate 111 moves smoothly in the vertical direction, that is, in the axial direction of the support 13.

[0047] A further improvement is that, of the two positioning truncated stages 22 , the upper positioning truncated stage 22 is connected to the output end of the fastening unit 21 , and the lower positioning truncated stage 22 is connected to the output end of the rotating assembly 3 .

[0048] Specifically, such as Figure 5 and Figure 6 As shown, the rotating component 3 includes a rotating motor 31, the output end of the rotating motor 31 is connected to the driving wheel 32 coaxially, the driving wheel 32 is connected to the cylindrical driven wheel 34 through a synchronous belt 33, the driven wheel 34 is connected to the lower positioning table 22 coaxially and rotates around its own axis on the movable frame 11; the rotating component 3 also includes a rotating frame 36 and a support bearing 35, the rotating frame 36 is fixed above the movable plate 111, the rotating motor 31 is fixed on the rotating frame 36 and is arranged downwardly, the output shaft of the rotating motor 31 is fixedly connected to the driving wheel 32 coaxially, the outer ring of the support bearing 35 is fixed on the movable plate 111, and the inner ring is fixed to the bottom of the lower positioning table 22 coaxially through the driven wheel 34.

[0049] After adopting the above structure, the driving wheel 32 is driven to rotate by the rotating motor 31, and the driving wheel 32 acts on the driven wheel 34 through the synchronous belt 33. Under the action of the support bearing 35, the driven wheel 34 and the lower positioning table 22 fixedly connected on the coaxial centerline can rotate with their own axis as the center line.

[0050] A further improvement is that the fastening unit 21 includes a fastening cylinder 211 and a fastening bearing 212. The cylinder barrel of the fastening cylinder 211 is arranged in the vertical direction and fixed on the movable frame 11. The piston rod is connected to the upper positioning table 22 of the two positioning tables 22 through a bearing; the fastening cylinder 211 is located on the upper side of the positioning through hole 221.

[0051] Specifically, the fastening unit 21 also includes a fastening frame 213, which is a U-shaped frame with both ends fixed above the movable plate 111. Two fastening cylinders 211 are provided, both of which are located above the side of the positioning through hole 221. The cylinder barrel of the fastening cylinder 211 is vertically downwardly arranged and fixed below the fastening frame 213. The bottom end of the piston rod is fixedly connected to a clamping ring 216. The inner ring and outer ring of the fastening bearing 212 are respectively fixedly connected to the upper positioning cone 22 and the clamping ring 216 coaxially. A guide sleeve 215 extending in the vertical direction and located above the side of the positioning through hole 221 is also fixed on the fastening frame 213. A guide rod 214 fixed directly above the clamping ring 216 slides on the inner side of the guide sleeve 215.

[0052] With the above structure, the tightening cylinder 211 is actuated, and through the telescopic movement of the piston rod, the clamping ring 216 is driven to move stably in the vertical direction under the sliding cooperation of the guide rod 214 and the guide sleeve 215. The tightening bearing 212 below the clamping ring 216 allows the upper positioning table 22 to move synchronously with the clamping ring 216 while facilitating the rotation of the upper positioning table 22. As a result, after the two positioning tables 22 cooperate to clamp the pipe 6, as the rotating assembly 3 drives the lower positioning table 22 to rotate, the upper positioning table 22 and the pipe 6 rotate synchronously. The tightening cylinder 211 and the positioning hole 221 are both located above and to the side of the positioning hole 221, forming a clearance space for the top of the detection assembly 4 to pass through the top of the pipe 6.

[0053] A further improvement is that the fixed column 41 is coaxial with the positioning through hole 221, and a plurality of connecting seats 45 are arranged between the fixed block 44 and the slider 42. The connecting seats 45 are distributed in a circular array with the axis of the positioning cone 22 as the center line. The side of the connecting seat 45 away from the axis of the positioning through hole 221 is the mounting surface. The connecting seat 45 includes a detection seat 451 and a balancing seat 452. The detection probe 47 is arranged on the detection seat 451 and is located on one side of the mounting surface and the axis of the positioning through hole 221. The balancing seat 452 is provided with a ball 4521 protruding from the mounting surface, and the ball 4521 rotates around its own center on the balancing seat 452.

[0054] Specifically, such as Figure 3 、 Figure 4 and Figure 7 As shown, a base 411 is provided at the bottom end of the fixed column 41, and the base 411 is fixed above the bottom plate 12. The slider 42 is a sheath slidably mounted on the outside of the fixed column 41. The fixed block 44 is fixed to the top of the fixed column 41. The projection of the circumferential outer edge of the fixed block 44 on the horizontal plane and the projection of the slider 42 on the horizontal plane are overlapping squares. Both ends of the connecting rod 46 are rotatably provided with hinged seats 461, one of the hinged seats 461 is fixed on one of the side walls of the fixed block 44, and the other is fixed on one of the side walls of the slider 42. The connecting rods 46 on the upper and lower sides of the connecting seat 45 are symmetrically arranged.

[0055] There are four connecting seats 45, namely a detection seat 451 and three balancing seats 452. The detection seat 451 is a tubular structure facing away from the fixed column 41, and the detection probe 47 is accommodated in the detection seat 451, while the mounting surfaces of the other three balancing seats 452 are all protruding with balls 4521 that can rotate around their own sphere centers; the driving unit 43 is a driving cylinder, the cylinder barrel of which is fixed above the base 411, and the top of the piston rod is fixedly connected to the slider 42.

[0056] After adopting the above structure, the slider 42 is driven by the driving unit 43 to slide along the fixed column 41, changing the angle and position of the connecting rod 46, so that the distance between the four connecting seats 45 and the axial center line of the positioning through hole 221 is changed, thereby making the balls 4521 on the three balancing seats 452 abut against the inner wall of the pipe 6 while ensuring that there is a certain distance between the detection probe 47 and the inner wall of the pipe 6, to prevent the wear between the pipe 6 and the detection probe 47 when the pipe 6 rotates and moves up and down after the detection probe 47 contacts the inner wall of the pipe 6; and the rotation of the balls 4521 on the balancing seat 452 can reduce the friction between it and the coating of the pipe 6, reduce wear, and help the pipe 6 to rotate smoothly around its own axis.

[0057] A further improvement is that a marking unit 48 is also provided on the detection seat 451. The marking unit 48 includes a marking pen 481 and a telescopic unit. The direction of the marking pen 481 is consistent with the direction of the detection probe 47. The telescopic unit drives the marking pen 481 to move along its own axial direction; the marking pen 481 is detachably provided on the detection seat 451.

[0058] By setting a marking pen 481 with a direction consistent with that of the detection probe 47 on the detection seat 451, when the coating thickness detected by the detection probe 47 is unqualified, the telescopic unit is used to control the marking pen 481 to move along its own axis close to the inner wall of the pipe 6, so that a mark can be left on the inner wall of the pipe 6, making it convenient for subsequent workers to carry out relevant remedial work on the coating of the pipe 6 at the unqualified position, and then the detection component 4 can continue to perform coating analysis on other positions of the pipe 6 without manual marking, which is beneficial to improving the detection efficiency; and the marking pen 481 is detachable from the detection seat 451, so as to facilitate the replacement of the marking pen 481 to ensure the long-term use of the marking unit 48.

[0059] Specifically, the detection seat 451 is in the shape of a long strip, and the cross-section of the circumferential outer edge is a square with a fixed side length; the first circular holes 4511 are provided at the four corners of the mounting surface of the detection seat 451, and the second circular holes 4512 which are coaxially connected to the four first circular holes 4511 are provided at the four corners of the other side. The inner diameter of the second circular hole 4512 is larger than the inner diameter of the first circular hole 4511. Four marking pens 481 are provided, which correspond one-to-one to the four first circular holes 4511. The marking pen 481 is sealed and fitted with the circumferential inner wall of the first circular hole 4511, and the end of the marking pen 481 close to the fixed column 41 is fixedly connected to the convex cover 486 coaxially.

[0060] The telescopic unit includes a telescopic cylinder 483, the cylinder barrel of the telescopic cylinder 483 is fixed on the side wall of the detection seat 451, and its axial direction is opposite to the direction of the detection probe 47. The piston rod of the telescopic cylinder 483 is fixedly connected to a translation plate 484 located between the detection seat 451 and the fixed column 41. A translation rod 485 corresponding to the four second circular holes 4512 is fixed on the side of the translation plate 484 adjacent to the detection seat 451. The translation rod 485 abuts against the convex cover 486. A compression spring 482 is also provided on the inner side of the second circular hole 4512. The two ends of the compression spring 482 are respectively connected to the inner bottom wall of the second circular hole 4512 and the convex cover 486.

[0061] After adopting the above structure, the telescopic cylinder 483 drives the translation plate 484 close to the detection seat 451, so that the translation rod 485 pushes the convex cover 486, and then the tip of the marking pen 481 extends out of the first circular hole 4511 and contacts the inner wall of the pipe 6, forming a mark on the pipe 6; then the telescopic cylinder 483 drives the translation plate 484 and the translation rod 485 away from the detection seat 451, and under the action of the compression spring 482, pushes the convex cover 486 close to the translation rod 485, so that the tip of the marking pen 481 detaches from the inner wall of the pipe 6 and retreats to the first circular hole 4511.

[0062] When the marking pen 481 needs to be replaced, the telescopic cylinder 483 drives the translation plate 484 to continue to move closer to the fixed column 41, so that a distance is created between the convex cover 486 and the translation rod 485. After the marking pen 481 is taken out of the second circular hole 4512, a new marking pen 481 can be inserted into the second circular hole 4512, and then the telescopic cylinder 483 drives the translation plate 484 to move, so that the translation rod 485 pushes the convex cover 486, and the two ends of the compression spring 482 abut against the inner bottom wall of the second circular hole 4512 and the convex cover 486, thereby completing the replacement of the marking pen 481.

[0063] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A pipeline coating analysis device, characterized in that: include: A frame (1), wherein a movable frame (11) is provided on the frame (1); A positioning assembly (2) and a rotating assembly (3), wherein the positioning assembly (2) comprises a fastening unit (21) and two positioning truncated tables (22) arranged coaxially opposite to each other and with their axes extending in a vertical direction, and the two positioning truncated tables (22) are both provided with a positioning through hole (221) coaxially, the fastening unit (21) drives the two positioning truncated tables (22) to move relative to each other in a vertical direction, and the rotating assembly (3) drives one of the positioning truncated tables (22) to rotate around its own axis; A detection assembly (4), the detection assembly (4) comprising a fixed column (41) extending in a vertical direction and fixed on the frame (1), a slider (42) sliding on the fixed column (41) in a vertical direction, a driving unit (43) driving the slider (42) to slide along the fixed column (41), a fixed block (44) fixed on the fixed column (41), and a connecting seat (45) arranged between the slider (42) and the fixed block (44), the connecting seat (45) and the fixed block (44) being hingedly connected by a connecting rod (46), and a horizontal and outward-facing detection probe (47) being arranged on the connecting seat (45); A lifting assembly (5) drives the movable frame (11) to move between an access position and a detection position in a vertical direction. In the access position, the positioning assembly (2) is arranged above the detection assembly (4). In the detection position, the pipe (6) clamped between the two positioning truncated tables (22) is sleeved outside the detection assembly (4).

2. The pipeline coating analysis device according to claim 1, characterized in that: Of the two positioning truncated tables (22), the upper positioning truncated table (22) is connected to the output end of the fastening unit (21), and the lower positioning truncated table (22) is connected to the output end of the rotating assembly (3).

3. The pipeline coating analysis device according to claim 2, characterized in that: The rotating assembly (3) includes a rotating motor (31), the output end of the rotating motor (31) is coaxially connected to a driving wheel (32), the driving wheel (32) is connected to a cylindrical driven wheel (34) through a synchronous belt (33), and the driven wheel (34) is coaxially connected to the positioning table (22) and rotates around its own axis on the movable frame (11).

4. The pipeline coating analysis device according to claim 1, characterized in that: The fastening unit (21) comprises a fastening cylinder (211) and a fastening bearing (212); the cylinder barrel of the fastening cylinder (211) is arranged in a vertical direction and fixed on the movable frame (11); and the piston rod is connected to the upper positioning truncated table (22) of the two positioning truncated tables (22) through a bearing.

5. The pipeline coating analysis device according to claim 4, characterized in that: The fastening cylinder (211) is located above and on the side of the positioning through hole (221).

6. The pipeline coating analysis device according to claim 1, characterized in that: The fixing column (41) and the positioning through hole (221) are coaxial, and a plurality of connecting seats (45) are provided between the fixing block (44) and the slider (42). The connecting seats (45) are distributed in a circular array with the axis of the positioning truncated cone (22) as the center line. The side of the connecting seat (45) away from the axis of the positioning through hole (221) is the mounting surface. The connecting seat (45) includes a detection seat (451) and a balancing seat (452). The detection probe (47) is provided on the detection seat (451) and is located on one side of the mounting surface and the axis of the positioning through hole (221).

7. The pipeline coating analysis device according to claim 6, characterized in that: The balancing seat (452) is provided with a ball (4521) protruding from the mounting surface, and the ball (4521) rotates on the balancing seat (452) around its own spherical center.

8. The pipeline coating analysis device according to claim 6, characterized in that: The detection seat (451) is further provided with a marking unit (48), the marking unit (48) comprising a marking pen (481) and a telescopic unit, the orientation of the marking pen (481) being consistent with the orientation of the detection probe (47), and the telescopic unit driving the marking pen (481) to move along its own axial direction.

9. The pipeline coating analysis device according to claim 8, characterized in that: The marking pen (481) is detachably arranged on the detection seat (451).

10. The pipeline coating analysis device according to any one of claims 1 to 9, characterized in that: The lifting assembly (5) includes a lifting motor (51) fixed on the frame (1); the output shaft of the lifting motor (51) is coaxially connected to a screw rod (52); the screw rod (52) is threadedly connected to a screw sleeve (53); and the screw sleeve (53) is fixedly connected to the movable frame (11).

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