A device and method for detecting pressure damage on the surface of a fan outer cylinder

Abstract

A device and method for detecting pressure damage on the surface of a fan outer cylinder, belonging to the technical field of fan outer cylinders, in order to solve the problem that most of the existing technologies rely on naked eye identification or manual all-round searching, and slight depressions are difficult to be found. In order to observe the casing more intuitively, the casing will be clamped and turned on both sides, but local clamping is prone to secondary damage due to excessive clamping force or uneven clamping force; the present invention drives a tracing pen to appear at a through groove through an arc-shaped bending block, and as a positioning mechanism moves on the inner wall of the barrel shell, the tracing pen traces on the inner wall surface, and the tracing pen traces in a spiral, continuous and uninterrupted state; the present invention utilizes the force of a driving toothed disc to ensure the slow descent of a movable sleeve, thereby basically covering the inner wall surface of the barrel shell, preventing point omissions, and quickly depicting the contour of a depression or wear on the barrel shell.

Description

Technical Field

[0001] The invention relates to the technical field of fan outer cylinders, and in particular to a device and method for detecting pressure damage on the surface of a fan outer cylinder. Background Art

[0002] A fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is a driven fluid machine. Fan is China's customary abbreviation for gas compression and gas delivery machinery. Commonly referred to fans include ventilators, blowers, wind turbines, and fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, ventilation and air induction of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selection of grains, wind tunnel wind sources and inflation and propulsion of hovercraft, etc.

[0003] In order to keep the fan in normal operation, its casing needs to be regularly inspected for external injuries. Most existing technologies rely on visual identification or manual all-round searching, and slight dents are difficult to detect. In order to observe the casing more intuitively, the casing is clamped and flipped on both sides. However, local clamping is prone to secondary damage due to excessive or uneven clamping force. This method of injury identification is not only time-consuming and labor-intensive, but also has unsatisfactory detection effects. It can only identify the approximate location of larger dents, which is not conducive to subsequent rapid repair of the casing.

[0004] In view of the above problems, the existing device is improved, and a device and method for detecting pressure damage on the surface of a fan outer cylinder are proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a device and method for detecting pressure damage on the surface of the outer cylinder of a fan, which solves the problem in the background technology that in order to maintain the normal operation of the fan, its shell needs to be regularly inspected for external damage. Most of the existing technologies rely on naked eye identification or manual all-round search, and slight dents are difficult to be found. In order to observe the casing more intuitively, the shell is clamped and turned on both sides, but local clamping is prone to secondary damage due to excessive clamping force or uneven clamping force. This method of external damage identification is not only time-consuming and labor-intensive, but also has unsatisfactory detection effect, and can only identify the approximate location of the larger dent, which is not conducive to the subsequent rapid repair of the casing.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for detecting the surface pressure damage of a fan outer cylinder, comprising a detection base and a fastening ring frame installed on the upper surface of the detection base, a cylinder shell is arranged on the inner side of the fastening ring frame, a spiral moving mechanism is arranged in the center of the upper surface of the detection base, a positioning mechanism is arranged on one side of the spiral moving mechanism, a connecting rod is arranged between the spiral moving mechanism and the positioning mechanism, one end of the connecting rod is connected to the center of the positioning mechanism, and the other end of the connecting rod is connected to the top side surface of the spiral moving mechanism, the fastening ring frame comprises a contour ring installed on the upper surface of the detection base and a ring provided on the wheel An adjusting notch groove is arranged on the upper surface of the profile ring, a movable groove is arranged inside the adjusting notch groove, a fastening ring body is arranged inside the movable groove, rubber reserved blocks are arranged on both sides of the profile ring, a tensioning piece is embedded on the surface of the rubber reserved block, the tensioning piece includes a positioning block arranged on the surface of the rubber reserved block and a movable connecting piece installed on one side of the positioning block, arc-shaped connecting rods are arranged on both sides of the movable connecting piece, the inner surface of the arc-shaped connecting rod corresponds to the positioning block, an extension block is arranged at one end of the arc-shaped connecting rod, an adjusting telescopic rod is installed between the two groups of extension blocks, and both ends of the fastening ring body are connected to the outer surface of the extension block;

[0007] A accommodating activity cavity is provided in the middle of the detection base, an open access groove is provided at the upper end of the accommodating activity cavity, the open access groove matches the outer dimensions of the spiral moving mechanism, a movable vertical rod is provided on the inner bottom surface of the accommodating activity cavity, a limit cover is installed at one end of the movable vertical rod, an inner dense tooth ring is sleeved on the outer side of the movable vertical rod, the outer dimensions of the inner dense tooth ring match the accommodating activity cavity, driving tooth discs are provided on both sides of the movable vertical rod, the driving tooth discs are meshed and connected with the inner surface of the inner dense tooth ring, and limit vertical strips are installed at both ends of the upper surface of the open access groove;

[0008] The spiral moving mechanism includes a movable sleeve column arranged on the inner side of the open access groove and a positioning groove opened on the upper end of the movable sleeve column, the positioning groove is connected to the limit cover, a movable sleeve groove is opened at the lower end of the positioning groove, the movable sleeve groove is connected to the movable vertical rod, a spiral drawing groove is opened on the outer surface of the movable sleeve column, and an annular groove is opened at the lower end of the spiral drawing groove.

[0009] Furthermore, the positioning mechanism includes a central block connected to the connecting rod and a dispersed extension rod arranged on the outside of the central block. Eight groups of dispersed extension rods are provided. A accommodating receiving plate is installed at one end of the dispersed extension rod. A connecting groove is opened in the center of the central block, and a through groove is opened on the side surface of the accommodating receiving plate.

[0010] Furthermore, an installation chamber is provided inside the accommodating plate, an installation baffle is provided inside the installation chamber, a connecting rod is provided at one end of the side surface of the installation baffle, a swing arm is provided inside the connecting rod, a driving adjustment control is installed on the inner side of the swing arm, a connecting block is provided on the upper surface of the installation baffle, a limiting frame ring is provided on one side of the connecting block, and a limiting small rod is installed in the center of the connecting block.

[0011] Furthermore, a movable slot is provided at one end of the connecting section rod, and one end of the swing arm is connected to the movable slot.

[0012] Furthermore, a limit long groove is provided on the upper surface of the mounting baffle, and the limit long groove is connected to the limit small rod.

[0013] Furthermore, the drive adjustment control unit includes a mounting rod connected to the inner wall of the mounting chamber and a coupling pad arranged at one end of the mounting rod, a guide turntable is arranged at the upper end of the coupling pad, a driving shaft is arranged at one side end of the coupling pad, the coupling pad is connected to the guide turntable through the driving shaft, a traction block is installed at the side end of the guide turntable, and the traction block is connected to the inner side of the limit frame ring.

[0014] Furthermore, the swing arm frame includes a swing arm rod and an L-shaped clamping rod arranged on the side surface of the swing arm rod, the guide turntable is arranged between the swing arm rod and the L-shaped clamping rod, one end of the swing arm rod is provided with a movable connecting shaft rod, the swing arm rod is connected to the movable slot through the movable connecting shaft rod, and the other end of the swing arm rod is provided with an arc-shaped bent block, the side surface of the arc-shaped bent block is installed with a tracing pen, and the tracing pen is connected to the through slot.

[0015] Furthermore, both side arms inside the inner dense gear ring are provided with small docking rods, and the small docking rods are connected to the annular grooves.

[0016] Furthermore, fixed point blocks are evenly installed on the inner surface of the limiting vertical strip, and the fixed point blocks are connected to the spiral groove.

[0017] Another technical solution proposed by the present invention is to provide a method for detecting a surface pressure damage of a fan outer cylinder, comprising the following steps:

[0018] S1: Place the barrel shell to be tested inside the fastening ring frame, shorten the telescopic rod, pull the two ends of the fastening ring body to continuously reduce its circumference, and then fix the barrel shell on the upper end of the testing base;

[0019] S2: The guide turntable rotates with the driving shaft at the side end as the axis, and the swing arm frame as a whole swings with the movable connecting shaft as the axis. When the engaging pad and the guide turntable are completely staggered, the arc-shaped bending block drives the line drawing pen to appear at the through groove, and as the positioning mechanism moves on the inner wall of the barrel shell, the line drawing pen draws lines on the inner wall surface;

[0020] S3: Start the two sets of driving gear discs, the inner gear ring gradually moves down slowly, and under the traction force of the docking rod, the spiral moving mechanism gradually moves down slowly along the open access groove, and the spiral groove is connected with the fixed point block of the limit vertical bar, so that the movable sleeve column slowly moves down in a spiral motion state;

[0021] S4: Start the driving shaft to make the guide turntable and the joint pad completely fit together, and the swing arm frame swings as a whole to restore the original position, so that the tracing pen is stored in the installation chamber;

[0022] S5: When the line drawing of the last barrel shell to be inspected is completed, the next barrel shell can be directly installed, and the line drawing is performed spirally from bottom to top. At this point, all the implementation steps are completed.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The present invention provides a device and method for detecting pressure damage on the surface of a fan outer cylinder. In the prior art, the shell is clamped and turned on both sides for more intuitive observation of the shell, but local clamping is prone to cause secondary damage due to excessive clamping force or uneven clamping force. The present invention places the barrel shell to be detected on the inner side of the fastening ring frame, shortens the adjustment telescopic rod, and continuously shortens the distance between the two groups of extension blocks. The arc-shaped connecting rod gradually fits toward the positioning block, and then pulls the two ends of the fastening ring body to continuously reduce its circumference, thereby fixing the barrel shell on the upper end of the detection base, which is convenient for taking the barrel shell and is beneficial to improving the progress of subsequent operations. In addition, this clamping method can perform annular clamping and fixing of the barrel shell with uniform clamping force, thereby avoiding secondary damage to the barrel shell caused by the force of local clamping.

[0025] 2. The present invention provides a device and method for detecting pressure damage on the surface of a fan outer cylinder. In the prior art, most of the methods are identified by naked eyes or manually searched in all directions, and slight depressions are difficult to be found. However, the present invention enables the guide turntable to rotate with the driving shaft at the side end as the axis, and utilizes the force of the connection between the traction block and the limit frame ring to drive the swing arm frame as a whole to swing with the movable connecting shaft as the axis. When the engagement pad and the guide turntable are completely offset, the arc-shaped bending block drives the tracing pen to appear at the through groove. With the movement of the positioning mechanism on the inner wall of the barrel shell, the tracing pen is used to trace the line on the inner wall surface. The tracing pen is applied in a spiral, continuous and uninterrupted state. If there is a line interruption, it means that there is a depression or wear at the interrupted position, which is conducive to intuitively finding the external damage position of the fan outer cylinder and improving the repair rate of the detection personnel without manual all-round search with the naked eye.

[0026] 3. The present invention provides a device and method for detecting pressure damage on the surface of the fan outer cylinder. In the prior art, such external damage identification methods are not only time-consuming and labor-intensive, but also have unsatisfactory detection effects. In addition, they can only identify the approximate location of a relatively large depression, which is not conducive to the subsequent rapid repair of the casing. The present invention utilizes the meshing connection between the driving toothed disc and the inner surface of the inner dense toothed ring to gradually and slowly move the inner dense toothed ring downward. Under the traction force of the docking rod, the spiral moving mechanism gradually and slowly moves downward along the open access groove, and the spiral groove is connected to the fixed point block of the limit vertical strip, so that the movable sleeve column moves in a spiral motion. The movable sleeve moves down slowly in a state, and the docking rod moves along the annular groove, so as not to affect the spiral rotation of the movable sleeve. Then, under the traction of the connecting rod, the tracing pen moves in a spiral state along the inner wall of the barrel shell. The density of the tooth surface set on the inner surface of the inner dense gear ring is utilized. Under the action of the driving gear disc, the movable sleeve is ensured to descend slowly, and then the inner wall surface of the barrel shell can be basically covered to prevent the omission of points. The outline of the depression or wear of the barrel shell can be quickly depicted. The detection method is simple, and it is convenient to quickly obtain the detection result, and it is easy to clean the inner wall of the barrel shell later.

[0027] 4. The present invention provides a device and method for detecting pressure damage on the surface of a fan outer cylinder. In the prior art, the wear between components shortens the service life, while in the present invention, when the detection device is idle, the driving shaft is started to make the guide turntable and the engaging pad fully fit, and the swing arm frame is swung as a whole to restore to its original position, and then the tracing pen is stored in the installation chamber to protect the pen tip from wear. The positioning mechanism and the spiral moving mechanism are simple in structure, saving the manufacturing cost of the device. After the tracing of the last detected barrel shell is completed, there is no need to restore the spiral moving mechanism to its original position, and the next barrel shell can be directly installed, and the spiral tracing is performed from bottom to top, which reduces the overall operation amount of the spiral moving mechanism, reduces the wear between components, and is conducive to extending the service life of the components. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the fan outer cylinder surface pressure damage detection device of the present invention;

[0029] Figure 2 It is a schematic diagram of the overall structure of the fastening ring frame of the fan outer cylinder surface pressure damage detection device of the present invention;

[0030] Figure 3 It is a schematic diagram of the internal planar structure of the fastening ring frame of the fan outer cylinder surface pressure damage detection device of the present invention;

[0031] Figure 4 It is a schematic diagram of the internal plane structure of the detection base of the fan outer cylinder surface pressure damage detection device of the present invention;

[0032] Figure 5 It is a schematic diagram of the structure of the tensioning member of the device for detecting the surface damage of the outer cylinder of the fan of the present invention;

[0033] Figure 6 It is a schematic diagram of the structure of the spiral moving mechanism of the fan outer cylinder surface pressure damage detection device of the present invention;

[0034] Figure 7 It is a schematic diagram of the structure of the positioning mechanism of the fan outer cylinder surface pressure damage detection device of the present invention;

[0035] Figure 8 This is a schematic diagram of the receiving plate structure of the fan outer cylinder surface pressure damage detection device of the present invention;

[0036] Fig. 9 This is a schematic diagram of the internal structure of the chamber in which the blower outer cylinder surface pressure damage detection device of the present invention is installed;

[0037] Fig.10 It is a schematic diagram of the structure of the swing arm frame of the fan outer cylinder surface pressure damage detection device of the present invention;

[0038] Fig.11 For the present invention Figure 4 Enlarged view of point A.

[0039] In the figure: 1. Detection base; 11. Accommodating movable cavity; 12. Open access groove; 13. Active vertical rod; 14. Limit cover; 15. Inner dense gear ring; 151. Docking rod; 16. Driving gear plate; 17. Limit vertical strip; 171. Fixed point block; 2. Fastening ring frame; 21. Contour ring; 22. Adjustment notch groove; 23. Active groove; 24. Fastening ring body; 25. Rubber reserved block; 26. Tension piece; 261. Positioning block; 262. Active connecting piece; 263. Arc connecting rod; 264. Extension block; 265. Adjustment telescopic rod; 3. Cylinder shell; 4. Spiral moving mechanism; 41. Active sleeve column; 42. Positioning groove; 43. Active sleeve groove; 44. Spiral groove; 45. Annular groove; 5. Positioning mechanism; 51, center block; 52, dispersed extension rod; 53, accommodating receiving plate; 531, installation chamber; 532, installation baffle; 5321, limiting long groove; 533, connecting section rod; 5331, movable slot; 534, swing arm frame; 5341, swing arm rod; 5342, L-shaped clamping rod; 5343, movable connecting shaft rod; 5344, arc-shaped bending block; 5345, tracing pen; 535, driving adjustment control unit; 5351, installation connecting rod; 5352, engagement pad; 5353, guide turntable; 5354, driving shaft; 5355, traction block; 536, connecting block; 537, limiting frame ring; 538, limiting small rod; 54, connecting groove; 55, through groove; 6, connecting rod. DETAILED DESCRIPTION

[0040] 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.

[0041] In order to observe the housing more intuitively, the housing is clamped and turned on both sides. However, partial clamping is prone to cause secondary damage due to excessive clamping force or uneven clamping force, such as Figure 1-Figure 5 As shown, the following preferred technical solutions are provided:

[0042] A device for detecting the surface damage of a fan outer cylinder comprises a detection base 1 and a fastening ring frame 2 installed on the upper surface of the detection base 1, a cylinder shell 3 is arranged on the inner side of the fastening ring frame 2, a spiral moving mechanism 4 is arranged in the center of the upper surface of the detection base 1, a positioning mechanism 5 is arranged on one side of the spiral moving mechanism 4, a connecting rod 6 is arranged between the spiral moving mechanism 4 and the positioning mechanism 5, one end of the connecting rod 6 is connected to the center of the positioning mechanism 5, and the other end of the connecting rod 6 is connected to the top side surface of the spiral moving mechanism 4, the fastening ring frame 2 comprises a contour ring 21 installed on the upper surface of the detection base 1 and an adjusting notch groove 22 opened on the upper surface of the contour ring 21, and an movable notch groove 22 is opened inside the adjusting notch groove 22 A drawing groove 23, a fastening ring body 24 is arranged inside the movable drawing groove 23, rubber reserved blocks 25 are arranged on both sides of the contour ring 21, and a tensioning member 26 is embedded in the surface of the rubber reserved block 25. The tensioning member 26 includes a positioning block 261 arranged on the surface of the rubber reserved block 25 and a movable connecting member 262 installed on one side end of the positioning block 261, arc-shaped connecting rods 263 are arranged on both sides of the movable connecting member 262, the inner surface of the arc-shaped connecting rod 263 corresponds to the positioning block 261, and an extension block 264 is arranged at one end of the arc-shaped connecting rod 263, and an adjusting telescopic rod 265 is installed between the two groups of extension blocks 264, and both ends of the fastening ring body 24 are connected to the outer surface of the extension block 264.

[0043] The middle part of the detection base 1 is provided with an accommodating activity chamber 11, and the upper end of the accommodating activity chamber 11 is provided with an open access groove 12, and the open access groove 12 matches the outer size of the spiral moving mechanism 4. The inner bottom surface of the accommodating activity chamber 11 is provided with a movable vertical rod 13, and one end of the movable vertical rod 13 is installed with a limit cover 14. The outer side of the movable vertical rod 13 is sleeved with an inner dense tooth ring 15, and the outer size of the inner dense tooth ring 15 matches the accommodating activity chamber 11. Both sides of the movable vertical rod 13 are provided with a driving toothed disc 16, and the driving toothed disc 16 is connected to the inner dense toothed disc 14. The inner surface of the gear ring 15 is meshed and connected, and limit vertical strips 17 are installed at both ends of the upper surface of the open passage groove 12. The spiral moving mechanism 4 includes a movable sleeve column 41 arranged on the inner side of the open passage groove 12 and a positioning groove 42 opened at the upper end of the movable sleeve column 41. The positioning groove 42 is connected to the limit cover 14, and a movable sleeve groove 43 is opened at the lower end of the positioning groove 42. The movable sleeve groove 43 is connected to the movable vertical rod 13. A spiral groove 44 is opened on the outer surface of the movable sleeve column 41, and an annular groove 45 is opened at the lower end of the spiral groove 44.

[0044] Specifically, the barrel shell 3 to be tested is placed inside the fastening ring frame 2, the telescopic rod 265 is shortened and adjusted, so that the distance between the two groups of extension blocks 264 is continuously shortened, and the arc-shaped connecting rod 263 gradually fits toward the positioning block 261, thereby pulling the two ends of the fastening ring body 24 to continuously reduce its circumference, thereby fixing the barrel shell 3 on the upper end of the detection base 1, which is convenient for taking the barrel shell 3 and is conducive to improving the progress of subsequent operations. In addition, this clamping method can perform annular clamping and fixing of the barrel shell 3 with uniform clamping force, thereby avoiding secondary damage to the barrel shell 3 caused by the force of local clamping.

[0045] In order to solve the technical problem that most of the existing technologies rely on naked eye recognition or manual full-scale search, slight depressions are difficult to detect, such as Figure 7-10 As shown, the following preferred technical solutions are provided:

[0046] The positioning mechanism 5 includes a central block 51 connected to the connecting rod 6 and a dispersed extension rod 52 arranged on the outside of the central block 51. Eight groups of dispersed extension rods 52 are provided. A receiving plate 53 is installed at one end of the dispersed extension rod 52. A connecting groove 54 is provided in the center of the central block 51. A through groove 55 is provided on the side surface of the receiving plate 53. An installation chamber 531 is provided inside the receiving plate 53. An installation baffle 532 is provided inside the installation chamber 531. A connecting section rod 533 is provided at one end of the side surface of the installation baffle 532. A swing arm frame 534 is provided inside the connecting section rod 533. A driving adjustment control 535 is installed on the inner side of the swing arm frame 534. A connecting block 536 is provided on the upper surface of the installation baffle 532. A limit frame ring 537 is provided on one side of the connecting block 536. A limit rod 538 is installed in the center of the connecting block 536.

[0047] Specifically, the driving shaft 5354 is started to rotate the guide turntable 5353 around the driving shaft 5354 at the side end, and the force of the connection between the traction block 5355 and the limit frame ring 537 is used to drive the swing arm 534 to swing as a whole around the movable connecting shaft 5343 as the axis. When the engagement pad 5352 and the guide turntable 5353 are completely offset, the arc-shaped bending block 5344 drives the tracing pen 5345 to appear at the through groove 55. As the positioning mechanism 5 moves on the inner wall of the barrel shell 3, the tracing pen 5345 traces lines on the inner wall surface. The tracing pen 5345 traces in a spiral, continuous and uninterrupted state. If there is a line interruption, it means that there is a depression or wear at the interruption position, which is conducive to intuitively finding the external damage position of the fan outer barrel and improving the repair rate of the inspector without the need for manual visual search.

[0048] In order to solve the technical problems that this kind of injury identification method is not only time-consuming and labor-intensive, but also has unsatisfactory detection effect, and can only identify the approximate location of the larger dent, which is not conducive to the subsequent rapid repair of the casing, such as Figure 3 , Figure 6 and Fig.11 As shown, the following preferred technical solutions are provided:

[0049] A movable slot 5331 is provided at one end of the connecting rod 533, one end of the swing arm 534 is connected to the movable slot 5331, a limited long slot 5321 is provided on the upper surface of the mounting baffle 532, the limited long slot 5321 is connected to the limited small rod 538, the driving adjustment control 535 includes a mounting rod 5351 connected to the inner wall of the mounting chamber 531 and a coupling pad 5352 arranged at one end of the mounting rod 5351, a guide turntable 5353 is provided at the upper end of the coupling pad 5352, a driving shaft 5354 is provided at one side end of the coupling pad 5352, the coupling pad 5352 is connected to the guide turntable 5353 through the driving shaft 5354, a traction block 5355 is installed at the side end of the guide turntable 5353, and the traction block 5355 is connected to the inner side of the limiting frame ring 537.

[0050] Specifically, the two sets of driving toothed discs 16 are started, and the inner surface of the inner dense toothed ring 15 is meshed and connected by the driving toothed discs 16, so that the inner dense toothed ring 15 gradually and slowly moves downward. Under the traction force of the docking rod 151, the spiral moving mechanism 4 gradually and slowly moves downward along the open access groove 12, and the spiral groove 44 is connected to the fixed point block 171 of the limit vertical bar 17, so that the movable sleeve column 41 slowly moves downward in a spiral motion state, and the docking rod 151 moves along the annular groove 45, so as not to affect the movable sleeve column 41. The spiral rotation of the connecting rod 6 causes the tracing pen 5345 to perform a circular motion in a spiral state along the inner wall of the barrel shell 3. The density of the tooth surface provided on the inner surface of the inner dense gear ring 15 is utilized. Under the action of the driving toothed disc 16, the slow descent of the movable sleeve 41 is ensured, so that the inner wall surface of the barrel shell 3 can be basically covered to prevent the omission of points. The contour of the depression or wear of the barrel shell 3 can be quickly depicted. The detection method is simple, and it is convenient to quickly obtain the detection result, and it is easy to clean the inner wall of the barrel shell 3 later.

[0051] In order to better solve the technical problem of shortened service life caused by wear between components, such as Figure 8-Figure 10 As shown, the following preferred technical solutions are provided:

[0052] The swing arm frame 534 includes a swing arm rod 5341 and an L-shaped clamping rod 5342 arranged on the side surface of the swing arm rod 5341, and a guide turntable 5353 is arranged between the swing arm rod 5341 and the L-shaped clamping rod 5342. A movable connecting shaft rod 5343 is arranged at one end of the swing arm rod 5341, and the swing arm rod 5341 is connected to the movable slot 5331 through the movable connecting shaft rod 5343. An arc-shaped bending block 5344 is arranged at the other end of the swing arm rod 5341, and a tracing pen 5345 is installed on the side surface of the arc-shaped bending block 5344, and the tracing pen 5345 is connected to the through groove 55. Both side arms inside the inner dense tooth ring 15 are provided with docking rods 151, and the docking rods 151 are connected to the annular groove 45. Fixed point blocks 171 are evenly installed on the inner surface of the limiting vertical strip 17, and the fixed point blocks 171 are connected to the spiral groove 44.

[0053] Specifically, when the detection device is idle, the driving shaft 5354 is started to make the guide turntable 5353 and the engaging pad 5352 fully fit together, and the swing arm 534 is swung as a whole to return to its original position, and then the tracing pen 5345 is stored in the installation chamber 531 to protect the pen tip of the tracing pen 5345 from wear and tear. The positioning mechanism 5 and the spiral moving mechanism 4 are simple in structure, saving the manufacturing cost of the device. After the tracing of the last detected barrel shell 3 is completed, there is no need to restore the spiral moving mechanism 4 to its original position, and the next barrel shell 3 can be directly installed, and the spiral tracing is performed from bottom to top, which reduces the overall operation volume of the spiral moving mechanism 4, reduces the wear between components, and helps to extend the service life of the components.

[0054] In order to further better explain the above embodiment, the present invention also provides an implementation scheme, a detection method of a fan outer cylinder surface pressure damage detection device, comprising the following steps:

[0055] Step 1: Place the barrel shell 3 to be tested inside the fastening ring frame 2, shorten and adjust the telescopic rod 265, pull the two ends of the fastening ring body 24 to continuously reduce its circumference, and then fix the barrel shell 3 on the upper end of the detection base 1;

[0056] Step 2: The guide turntable 5353 rotates with the driving shaft 5354 at the side end as the axis, and the swing arm 534 as a whole swings with the movable connecting shaft 5343 as the axis. When the engaging pad 5352 and the guide turntable 5353 are completely staggered, the arc-shaped bending block 5344 drives the line drawing pen 5345 to appear at the through groove 55. As the positioning mechanism 5 moves on the inner wall of the barrel shell 3, the line drawing pen 5345 draws lines on the inner wall surface thereof.

[0057] Step 3: Start the two sets of driving toothed discs 16, the inner dense toothed ring 15 gradually and slowly moves downward, and under the traction force of the docking rod 151, the spiral moving mechanism 4 gradually and slowly moves downward along the open access groove 12, and the spiral groove 44 is connected with the fixed point block 171 of the limit vertical bar 17, so that the movable sleeve column 41 moves slowly downward in a spiral motion state;

[0058] Step 4: Start the driving shaft 5354 to make the guide rotating disk 5353 and the joint pad 5352 completely fit together, and the swing arm 534 swings as a whole to restore the original position, so that the tracing pen 5345 is stored in the installation chamber 531;

[0059] Step 5: After the line drawing of the last detected barrel shell 3 is completed, the next barrel shell 3 can be directly installed, and the line drawing is performed spirally from bottom to top. At this point, all the implementation steps are completed.

[0060] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fan outer cylinder surface pressure damage detection device, comprising a detection base (1) and a fastening ring frame (2) mounted on the upper surface of the detection base (1), characterized in that: A cylinder shell (3) is arranged on the inner side of the fastening ring frame (2); a spiral moving mechanism (4) is arranged at the center of the upper surface of the detection base (1); a positioning mechanism (5) is installed on one side of the spiral moving mechanism (4); a connecting rod (6) is installed between the spiral moving mechanism (4) and the positioning mechanism (5); one end of the connecting rod (6) is connected to the center of the positioning mechanism (5); the other end of the connecting rod (6) is connected to the top side surface of the spiral moving mechanism (4); the fastening ring frame (2) comprises a contour ring (21) installed on the upper surface of the detection base (1) and an adjustment notch groove (22) provided on the upper surface of the contour ring (21); a movable groove (23) is provided inside the adjusting notch groove (22); a fastening ring is arranged inside the movable groove (23); A body (24), rubber reserved blocks (25) are arranged on both sides of the contour ring (21), and a tensioning member (26) is embedded in the surface of the rubber reserved block (25), and the tensioning member (26) comprises a positioning block (261) arranged on the surface of the rubber reserved block (25) and a movable connecting member (262) installed on one side end of the positioning block (261), arc-shaped connecting rods (263) are arranged on both sides of the movable connecting member (262), the inner surface of the arc-shaped connecting rod (263) corresponds to the positioning block (261), an extension block (264) is arranged at one end of the arc-shaped connecting rod (263), an adjustable telescopic rod (265) is installed between the two groups of extension blocks (264), and both ends of the fastening ring body (24) are connected to the outer surface of the extension block (264); A accommodating movable cavity (11) is provided in the middle of the detection base (1), an open access groove (12) is provided at the upper end of the accommodating movable cavity (11), and the open access groove (12) matches the outer dimensions of the spiral moving mechanism (4), a movable vertical rod (13) is provided on the inner bottom surface of the accommodating movable cavity (11), a limit cover (14) is installed at one end of the movable vertical rod (13), an inner dense tooth ring (15) is sleeved on the outer side of the movable vertical rod (13), and the outer dimensions of the inner dense tooth ring (15) match the accommodating movable cavity (11), driving tooth discs (16) are provided on both sides of the movable vertical rod (13), and the driving tooth discs (16) are meshedly connected with the inner surface of the inner dense tooth ring (15), and limit vertical strips (17) are installed at both ends of the upper surface of the open access groove (12); The spiral moving mechanism (4) comprises a movable sleeve column (41) arranged on the inner side of the open access groove (12) and a positioning groove (42) provided on the upper end of the movable sleeve column (41); the positioning groove (42) is connected to the limit cover (14); a movable sleeve groove (43) is provided at the lower end of the positioning groove (42); the movable sleeve groove (43) is connected to the movable upright rod (13); a spiral groove (44) is provided on the outer surface of the movable sleeve column (41); an annular groove (45) is provided at the lower end of the spiral groove (44); an installation chamber (531) is provided inside the receiving plate (53); an installation baffle (531) is provided inside the installation chamber (531) 532, a connecting rod (533) is provided at one end of the side surface of the mounting baffle (532), a swing arm frame (534) is provided inside the connecting rod (533), a driving adjustment control (535) is installed on the inner side of the swing arm frame (534), a connecting block (536) is provided on the upper surface of the mounting baffle (532), a limit frame ring (537) is provided on one side of the connecting block (536), a limit rod (538) is installed in the center of the connecting block (536), a movable slot (5331) is provided at one end of the connecting rod (533), and one end of the swing arm frame (534) is connected to the movable slot (5331).

2. A fan outer cylinder surface pressure damage detection device as claimed in claim 1, characterized in that: The drive adjustment control unit (535) comprises a mounting rod (5351) connected to the inner wall of the mounting chamber (531) and a joint pad (5352) arranged at one end of the mounting rod (5351); a guide turntable (5353) is arranged at the upper end of the joint pad (5352); a driving shaft (5354) is arranged at one side end of the joint pad (5352); the joint pad (5352) is connected to the guide turntable (5353) via the driving shaft (5354); a traction block (5355) is installed at the side end of the guide turntable (5353); and the traction block (5355) is connected to the inner side of the limit frame ring (537).

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