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

Abstract

A device and method for detecting cracks on the surface of a fan outer cylinder, belonging to the technical field of crack detection equipment, is intended to solve the problem that a single small detector of an existing crack detection device detects a rotating workpiece, it is difficult to quickly perform a comprehensive detection by covering the surface with points, and the detection of a single workpiece takes a long time; the present invention utilizes a fan cylinder bracket to be horizontally inserted into the fan outer cylinder, and utilizes a pneumatic linear guide to carry a detection cylinder on the top of a power part to move horizontally along the fan outer cylinder, when moving, a rotating cylinder of the power part and a transmission gear ring engage with a tooth groove on the outer wall of the detection cylinder to drive it to rotate, when the detection cylinder translates and rotates, crack scanning probes arranged at annular intervals on the inner wall at its port perform an array scan on the fan outer cylinder, the crack scanning probes arranged in annular intervals form multiple scanning surfaces to perform crack scanning on the entire fan outer cylinder when translated, and the scanning detection ends when the detection cylinder moves to fit the moving sleeve on the outer wall at the end of the guide rod; the present invention can accurately and quickly detect cracks on the surface of the fan outer cylinder.

Description

Technical Field

[0001] The present invention relates to the technical field of crack detection equipment, and in particular to a device and method for detecting cracks 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. The fans usually mentioned include ventilators, blowers, and wind turbines. Fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, ventilation and air intake 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. The outer cylinder of the fan is mostly a straight tube structure. Good sealing of the outer cylinder of the fan is an important indicator to ensure its normal air supply. Therefore, after the production of the outer cylinder of the fan is completed, surface crack detection is required to prevent air leakage.

[0003] Patent document with publication number CN215812453U discloses a shell crack detection device for multi-chamber gas cylinder production, including a connecting plate, a crack detection device body and a cabinet body, a hydraulic cylinder is embedded and installed on one side of the top of the retaining frame, and a hydraulic rod is installed on one end of the hydraulic cylinder passing through the top of the retaining frame, a support plate is welded inside the cabinet body, a second motor is welded on the upper surface of the support plate, a connecting rod is rotatably installed on the second motor, and a bearing plate is welded on one end of the connecting rod passing through the cabinet body and the flat plate, a first motor is embedded and installed on the other side of the top of the retaining frame, a screw rod is installed on one end of the first motor passing through the top of the retaining frame, a movable block is installed on the screw rod, a protective shell is welded on the side of the movable block opposite to the connecting plate, and a crack detection device body is installed inside the protective shell, so that the multi-chamber gas cylinder rotates and the crack detection device body moves up and down for detection, which has the advantage of high detection efficiency. Most existing crack detection devices rely on a single small detector to detect rotating workpieces. The detector has limited coverage of the workpiece. It is difficult to quickly perform comprehensive detection based on the point-to-surface coverage method by rotating the detector to scan the surface. The detection of a single workpiece is time-consuming and inconvenient to use.

[0004] Therefore, we introduce a device and method for detecting cracks on the surface of a fan outer cylinder. Summary of the invention

[0005] The object of the present invention is to provide a device and method for detecting cracks on the surface of a fan outer cylinder, aiming to solve the problem in the above-mentioned background technology that the existing crack detection devices mostly rely on a single small detector to detect a rotating workpiece, the coverage of the detector on the workpiece is limited, and it is difficult to quickly perform a comprehensive detection based on the point-to-surface coverage method through the rotating scanning of the detector, and the detection of a single workpiece is time-consuming.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for detecting cracks on the surface of a fan outer cylinder, comprising a support plate and pneumatic linear guides fixedly installed on both sides of the upper end of the support plate, the top of the pneumatic slider in the slide groove at the upper end of the pneumatic linear guide is fixedly connected to the lower end of the power part, a detection cylinder is movably arranged on the upper end of the power part, crack scanning probes are fixedly connected to the inner wall at the ports at both ends of the detection cylinder in an annular shape at even intervals, and a tooth groove is arranged in the middle of the outer wall of the detection cylinder, and mounting grooves are opened on the outer wall of the detection cylinder on both sides of the tooth groove, and steel balls are evenly and movably engaged in the mounting grooves, one end of the steel ball extends to the outside of the mounting groove port, and the outer wall of the detection cylinder end head outside the mounting groove port is movably arranged on the outer wall of the detection cylinder end head A positioning ring is sleeved, and a limiting groove is provided on the inner wall of the positioning ring. The positioning ring is clamped on the outside of the steel ball through the limiting groove, and the bottom oblique wall of the positioning ring is fixedly connected to the power part. A fixed vertical plate is provided on the top of the support plate on one side of the detection cylinder, and a wind tube bracket is provided on the outer wall of the fixed vertical plate close to the detection cylinder. The wind tube bracket is used to support the outer cylinder of the fan, and guide rods are fixedly connected to the oblique walls on both sides of the top of the positioning ring close to the wind tube bracket. A movable sleeve is movably sleeved on the outer wall adjacent to the end of the guide rod, and a movable connecting rod is movably connected to the bottom of the movable sleeve through a movable pin. The other end of the movable connecting rod is movably connected to the top of the wind tube bracket, and an intelligent controller is installed on the upper end of the support plate outside the pneumatic linear guide rail;

[0007] The power part includes an L-shaped support seat fixedly connected to the inclined walls on both sides of the bottom of the positioning ring, a reinforcing cross plate is arranged between the side walls of adjacent L-shaped support seats, a rotating drum is movably arranged between the side walls of the L-shaped support seat at the upper end of the reinforcing cross plate, a transmission gear ring is fixedly sleeved at the corresponding gear groove on the outer wall of the rotating drum, the transmission gear ring extends into the gear groove and meshes with it, a driving motor is arranged on the upper end of the bottom plate of the L-shaped support seat at one end of the rotating drum, and the output end of the driving motor is movably connected to the shaft rod at one end of the rotating drum through a pulley group.

[0008] Furthermore, the fixed vertical plate is arranged on the side of the upper end of the support plate away from the detection tube, the fixed vertical plate and the support plate are an integrally formed structure, and the pneumatic linear guide is symmetrically distributed about the fixed vertical plate. The fixed vertical plate has a T-shaped structure, and the horizontal width of the upper part of the fixed vertical plate is greater than the spacing length of the pneumatic linear guide.

[0009] Furthermore, the air duct bracket includes a connecting strip movably connected to the fixed plates at both ends of the side walls of the fixed vertical plate and an L-shaped bracket fixedly connected to the bottom of the connecting strip, the outer wall of the L-shaped bracket close to one side of the fixed vertical plate is movably connected with a piston rod, the end of the piston rod is movably sleeved inside the air cylinder on the side wall of the fixed vertical plate, the lower end of the air cylinder is movably connected to the side wall of the fixed vertical plate, the end of the connecting strip is fixedly connected to the limited side plate, the lower end of the limited side plate is affixed to the bottom plate of the L-shaped bracket, an electric telescopic rod is fixedly connected to the middle of the side walls of the limited side plates between the connecting strips, the end of the electric telescopic rod is fixedly connected to the fixed cross plate, and moving rods are respectively fixedly connected to the outer walls of the two ends of the fixed cross plate close to one side of the limited side plates, the moving rod extends to the other side through the positioning holes on the side walls of the limited side plates, and support plates are movably sleeved on the outer wall of the moving rod at even intervals, and the side walls of the limited side plates outside the support plates are movably connected to the ends of the movable connecting rods.

[0010] Furthermore, the moving rod is arranged horizontally through the piston rod and the air cylinder supporting the limiting side plate. At this time, the supporting plate is arranged parallel to the detection cylinder, and the end of the detection cylinder close to the supporting plate is away from the moving sleeve on the outer wall of the guide rod.

[0011] Furthermore, the axis of the support disk and the axis of the detection tube are arranged on the same horizontal line, and a column magnetic block is fixedly installed at the middle part of the opposite outer walls of the support disk, the column magnetic blocks on the outer walls of adjacent support disks have the same magnetic poles arranged opposite to each other, and X-shaped folding push rods are movably arranged on the outer walls on both sides of the support disk, the X-shaped folding push rods are symmetrically distributed about the column magnetic blocks, and adjacent support disks are movably connected through the X-shaped folding push rods.

[0012] Furthermore, the support plate includes a circular shell and a positioning sleeve fixedly connected to the outer walls at both ends of the circular shell. An integral positioning sleeve is evenly spaced on the outer wall of the circular shell outside the positioning sleeve. A support rod is movably sleeved in the positioning sleeve. The end of the support rod outside the positioning sleeve is fixedly connected to a first magnetic ball. The other end of the support rod extends into the interior of the circular shell. A reset spring is fixedly connected to the end of the reset spring. The end of the reset spring is fixedly connected to the outer wall of the fixed block. The fixed block is suspended between the inner walls on both sides of the circular shell through the fixed rod.

[0013] Furthermore, an installation groove is opened on the outer wall of one side of the support rod adjacent to the reset spring, and an elastic component is fixedly connected to the inner wall of the port corresponding to the installation groove, and a wedge-shaped block is fixedly connected to the end of the elastic component. The wedge-shaped block is movably engaged in the installation groove, and when the elastic component maintains a normal relaxed state, the end of the wedge-shaped block extends to the outside of the installation groove port.

[0014] Furthermore, positioning grooves are evenly spaced on the inner wall of the circular shell opposite to the end of the wedge-shaped block, and a connecting hole is opened on the partition plate on the side of the positioning groove away from the port, and a guide rod is movably arranged in the connecting hole, and the guide rod extends through and extends to the outside of the circular shell and is arranged corresponding to the support rod, and the end of the guide rod outside the circular shell is fixedly connected to a second magnetic ball, and a connecting rod is movably connected to the outer wall of the guide rod in the positioning groove, and the end of the connecting rod is movably connected to the side wall of the pushing block, and the pushing block is movably engaged between the inner walls of the positioning groove.

[0015] Furthermore, when the elastic component maintains a normal relaxation state, the wedge-shaped block is located below the positioning groove. At this time, the connecting end of the connecting rod and the guide rod is close to the connecting hole at the bottom of the positioning groove, and the pushing block is located at the end of the positioning groove.

[0016] The present invention provides another technical solution: a method for using a fan outer cylinder surface crack detection device, comprising the following steps:

[0017] S1: Start the electric telescopic rod to adjust the length of the fan outer cylinder and drive the moving rod to move. When the moving rod moves, the adjacent support plates are forced to move through the repulsive force of the column magnetic blocks between the side walls. The movement of the support plates pushes the X-shaped folding push rod to deflect and extend, so that the overall length of the support plates is adapted to the length of the fan outer cylinder;

[0018] S2: Use the pneumatic linear guide to push the detection cylinder to the end of the support plate at the end of the moving rod, and put the fan outer cylinder on the outside of all the support plates from the port of the detection cylinder. The first magnetic ball on the outside of the support plate is attracted to drive the support rod to move and fit the inner wall of the fan outer cylinder. The support rod pushes the first magnetic ball to lift the fan outer cylinder so that it is suspended outside the support plate.

[0019] S3: When the support rod moves, the second magnetic ball is also attracted to drive the guide rod to move. The second magnetic ball is attracted and suspended in the inner cavity of the fan outer cylinder. When the guide rod moves, the connecting rod is used to pull the pushing block to move to the inside of the positioning groove, and the positioning groove port is exposed. When the support rod moves, the wedge-shaped card block is driven to slide and engage in the corresponding positioning groove port. The wedge-shaped card block engages the positioning groove to fix the support rod to adaptively adjust and support the fan outer cylinder;

[0020] S4: Then, the pneumatic linear guide is used to drive the detection cylinder to move toward the other end of the fan outer cylinder. The drive motor is started while the movement occurs. The drive motor drives the rotating cylinder and the transmission gear ring between the side walls of the L-shaped support seat to rotate through the pulley group. The transmission gear ring engages with the meshing tooth groove to drive the detection cylinder to rotate in the positioning ring.

[0021] S5: When the detection tube rotates, the crack scanning probes evenly spaced on the inner walls of the two end ports are used to perform an array scan on the fan outer tube. The crack scanning probes arranged in a ring form multiple scanning surfaces to perform crack scanning on the entire fan outer tube during translation. The scanning and detection is completed when the detection tube moves to fit the movable sleeve on the outer wall of the end of the guide rod, and the fan outer tube is slid and removed from the outside of the support plate.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention proposes a device and method for detecting cracks on the surface of a fan outer cylinder. The existing detection device relies on a single detector to perform rotation detection on a workpiece, and it is difficult to quickly perform comprehensive detection by covering the entire surface with points. The detection of a single workpiece takes a long time. The present invention uses a pneumatic linear guide to drive the detection cylinder to move toward the other end of the fan outer cylinder, and starts the drive motor while moving. The drive motor drives the rotating cylinder and the transmission gear ring between the side walls of the L-shaped support seat to rotate through a pulley group. The transmission gear ring engages with the meshing tooth groove to drive the detection cylinder to rotate in the positioning ring. When the detection cylinder rotates, the crack scanning probes evenly arranged on the inner walls of the two end ports are used to perform an array scan on the fan outer cylinder. The crack scanning probes arranged in an annular manner form multiple scanning surfaces to perform crack scanning on the entire fan outer cylinder during translation. The scanning detection ends when the detection cylinder moves to fit the moving sleeve on the outer wall at the end of the guide rod. The crack scanning probes arranged in an annular manner form a scanning surface when the detection cylinder rotates. The scanning surface is rotated and translated along the outer wall of the fan outer cylinder for detection, thereby realizing rapid and comprehensive coverage detection of the fan outer cylinder, which is quick and accurate.

[0024] 2. The present invention proposes a device and method for detecting cracks on the surface of a fan outer cylinder. In the existing detection device, when a hydraulic rod is used to extend and retract to clamp a workpiece for rotation detection, the holding force is too large and it is easy to damage the workpiece. In the present invention, the fan outer cylinder is placed on the outside of all support plates. The first magnetic ball on the outside of the support plate is attracted to drive the support rod to move and fit the inner wall of the fan outer cylinder. The support rod pushes the first magnetic ball to lift the fan outer cylinder so that it is suspended outside the support plate. When the support rod moves, the second magnetic ball is also attracted to drive the guide rod to move. The second magnetic ball is attracted and suspended in the inner cavity of the fan outer cylinder. When the guide rod moves, the connecting rod is used to Pull the pushing block to move toward the inside of the positioning groove, and the positioning groove port is exposed. When the support rod moves, it drives the wedge-shaped block to slide and engage in the corresponding positioning groove port. The wedge-shaped block engages with the positioning groove to fix the support rod to adaptively adjust and support the fan outer cylinder. The magnetic force of the magnetic ball is used to adsorb the inner wall of the fan outer cylinder to stretch the support rod to adjust the wedge-shaped block to engage with the positioning groove to support and fix it, avoiding the problem of damage to the wind cylinder caused by excessive holding force when using a hydraulic rod to telescopically clamp the workpiece for rotation detection. After the magnetic ball is pulled out of the fan outer cylinder and loses its magnetic force, the support rod and the wedge-shaped block are automatically reset under the action of the reset spring, which is convenient and practical.

[0025] 3. The present invention proposes a device and method for detecting cracks on the surface of a fan outer cylinder. The existing detection device is easily limited when detecting workpieces of different lengths, and unloading mainly relies on manual labor. The present invention uses an electric telescopic rod to adjust the length of the fan outer cylinder to drive the moving rod to move. When the moving rod moves, it forces the adjacent support plates to move through the repulsive force of the column magnetic blocks between the side walls. The movement of the support plate drives the X-shaped folding push rod to deflect and stretch, so that the overall length of the support plate is adapted to the length of the fan outer cylinder, and the fan outer cylinders of different lengths are supported and fixed. The pneumatic The linear guide pushes the detection cylinder to the end of the supporting plate at the end of the moving rod, and the fan outer cylinder is placed on the outside of all the supporting plates from the port of the detection cylinder. The scanning detection is completed when the detection cylinder rotates and translates to fit the moving sleeve on the outer wall of the end of the guide rod, and then the detection cylinder continues to be pushed to move toward the fixed vertical plate. The detection cylinder pushes the moving sleeve to drive the movable connecting rod to squeeze the limiting side plate downward, driving the limiting side plate to deflect along the fixed plate through the connecting strip. At the same time, the connecting strip pushes the piston rod to compress the gas inside the gas cylinder, so that the supporting plate deflects and tilts downward in the detection cylinder, which is convenient for the fan outer cylinder to slide off from the outside of the supporting plate, so as to facilitate unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the fan outer cylinder surface crack detection device of the present invention;

[0027] Figure 2 It is a schematic diagram of the installation structure of the power parts and the detection cylinder of the fan outer cylinder surface crack detection device of the present invention;

[0028] Figure 3 It is a schematic diagram of the installation structure of the detection cylinder and the positioning ring of the fan outer cylinder surface crack detection device of the present invention;

[0029] Figure 4 It is a schematic diagram of the structure of the power parts of the fan outer cylinder surface crack detection device of the present invention;

[0030] Figure 5 It is a schematic diagram of the installation structure of the fan cylinder bracket of the fan outer cylinder surface crack detection device of the present invention;

[0031] Figure 6 It is a schematic diagram of the structure of the fan cylinder bracket of the fan outer cylinder surface crack detection device of the present invention;

[0032] Figure 7 It is a schematic diagram of the support plate structure of the fan outer cylinder surface crack detection device of the present invention;

[0033] Figure 8 It is a cross-sectional view of the support plate of the fan outer cylinder surface crack detection device of the present invention;

[0034] Fig. 9It is a schematic diagram of the structure of the support rod adjustment state of the fan outer cylinder surface crack detection device of the present invention;

[0035] Fig.10 The invention is a device for detecting cracks on the surface of the fan outer cylinder. Fig. 9 Enlarged structural diagram at A in the middle.

[0036] In the figure: 1, support plate; 2, pneumatic linear guide; 3, power part; 31, L-shaped support seat; 32, strengthening horizontal plate; 33, rotating drum; 34, transmission gear ring; 35, driving motor; 36, pulley group; 4, detection cylinder; 5, crack scanning probe; 6, meshing groove; 7, mounting slot; 8, steel ball; 9, positioning ring; 10, fixed vertical plate; 101, fixed plate; 11, air cylinder bracket; 111, connecting strip; 112, L-shaped support plate; 113, piston rod; 114, air cylinder; 115, limiting side plate; 116, electric telescopic rod; 117, fixed horizontal plate; 118, moving rod; 119, positioning hole; 1110, support plate; 11101, round shaped shell; 11102, positioning sleeve; 11103, positioning sleeve; 11104, support rod; 11105, first magnetic ball; 11106, return spring; 11107, fixed block; 11108, mounting groove; 11109, elastic component; 111010, wedge-shaped block; 111011, positioning groove; 111012, connecting hole; 111013, guide rod; 111014, second magnetic ball; 111015, connecting rod; 111016, squeezing block; 1111, columnar magnetic block; 1112, X-shaped folding push rod; 12, guide rod; 13, movable sleeve; 14, movable connecting rod; 15, intelligent controller; 16, limit groove. DETAILED DESCRIPTION

[0037] 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.

[0038] In order to solve the problem that most existing crack detection devices rely on a single small detector to detect rotating workpieces, the detector has limited coverage of the workpiece, it is difficult to quickly perform comprehensive detection based on the point-to-surface method through the detector rotation scanning, and the detection of a single workpiece takes a long time, please refer to Figure 1-Figure 4 , provide the following preferred technical solutions:

[0039] A device for detecting cracks on the surface of a fan outer cylinder comprises a support plate 1 and pneumatic linear guides 2 fixedly mounted on both sides of the upper end of the support plate 1, the top of the pneumatic slider in the upper end slide groove of the pneumatic linear guide 2 is fixedly connected to the lower end of a power member 3, a detection cylinder 4 is movably arranged on the upper end of the power member 3, a crack scanning probe 5 is fixedly connected to the inner wall of the ports at both ends of the detection cylinder 4 in an annular shape and evenly spaced, and a tooth groove 6 is arranged in the middle of the outer wall of the detection cylinder 4, and mounting grooves 7 are provided on the outer wall of the detection cylinder 4 on both sides of the tooth groove 6, and steel balls 8 are evenly and movably engaged in the mounting grooves 7, one end of the steel ball 8 extends to the outside of the port of the mounting groove 7, and a positioning ring 9 is movably sleeved on the outer wall of the end of the detection cylinder 4 outside the port of the mounting groove 7, and a limiting groove is provided on the inner wall of the positioning ring 9 16, the positioning ring 9 is clamped on the outside of the steel ball 8 through the limiting groove 16, and the bottom oblique wall of the positioning ring 9 is fixedly connected to the power part 3, a fixed vertical plate 10 is arranged on the top of the support plate 1 on one side of the detection tube 4, and a wind tube bracket 11 is arranged on the outer wall of the fixed vertical plate 10 close to the detection tube 4. The wind tube bracket 11 is used to support the outer tube of the fan, and guide rods 12 are fixedly connected to the oblique walls on both sides of the top of the positioning ring 9 close to the wind tube bracket 11. A movable sleeve 13 is movably sleeved on the outer wall adjacent to the end of the guide rod 12, and a movable connecting rod 14 is movably connected to the bottom of the movable sleeve 13 through a movable pin. The other end of the movable connecting rod 14 is movably connected to the top of the wind tube bracket 11, and an intelligent controller 15 is installed on the upper end of the support plate 1 outside the pneumatic linear guide 2.

[0040] The power member 3 includes an L-shaped support seat 31 fixedly connected to the inclined walls on both sides of the bottom of the positioning ring 9, a reinforcing cross plate 32 is arranged between the side walls of adjacent L-shaped support seats 31, a rotating drum 33 is movably arranged between the side walls of the L-shaped support seat 31 at the upper end of the reinforcing cross plate 32, a transmission gear ring 34 is fixedly sleeved at the corresponding meshing groove 6 on the outer wall of the rotating drum 33, the transmission gear ring 34 extends into the meshing groove 6 and meshes with it, a driving motor 35 is arranged on the upper end of the bottom plate of the L-shaped support seat 31 at one end of the rotating drum 33, and the output end of the driving motor 35 is movably connected to the shaft rod at one end of the rotating drum 33 through a pulley group 36.

[0041] The fixed vertical plate 10 is arranged on the side of the upper end of the support plate 1 away from the detection tube 4. The fixed vertical plate 10 and the support plate 1 are an integrally formed structure, and the pneumatic linear guide 2 is symmetrically distributed about the fixed vertical plate 10. The fixed vertical plate 10 is a T-shaped structure, and the horizontal width of the upper part of the fixed vertical plate 10 is greater than the spacing length of the pneumatic linear guide 2.

[0042] Specifically, the pneumatic linear guide 2 is used to push the detection cylinder 4 to the end of the support plate 1110 at the end of the moving rod 118, and the fan outer cylinder is fixed to the outside of all the support plates 1110 from the port of the detection cylinder 4. The pneumatic linear guide 2 is used to drive the detection cylinder 4 to move to the other end of the fan outer cylinder. The drive motor 35 is started while moving. The drive motor 35 drives the rotating cylinder 33 and the transmission gear ring 34 between the side walls of the L-shaped support seat 31 to rotate through the pulley group 36. The transmission gear ring 34 engages with the meshing groove 6 to drive the detection cylinder 4 to rotate in the positioning ring 9. When the detection tube 4 rotates, the crack scanning probes 5 evenly spaced on the inner walls of the two end ports thereof are used to perform an array scan on the fan outer tube. The crack scanning probes 5 arranged in an annular manner form multiple scanning surfaces to perform crack scanning on the entire fan outer tube during translation. The scanning detection is completed when the detection tube 4 moves to fit the moving sleeve 13 on the outer wall at the end of the guide rod 12. The crack scanning probes 5 arranged in an annular manner form a scanning surface when the detection tube 4 rotates. The scanning surface is rotated and translated along the outer wall of the fan outer tube for detection, thereby realizing rapid, comprehensive and accurate coverage detection of the fan outer tube.

[0043] In order to facilitate the detection and fixation of fan outer cylinders of different lengths, Figure 5-Figure 7 As shown, the following preferred technical solutions are provided:

[0044] The air duct bracket 11 includes a connecting strip 111 movably connected to the fixed plates 101 at both ends of the side wall of the fixed vertical plate 10 and an L-shaped support plate 112 fixedly connected to the bottom of the connecting strip 111. A piston rod 113 is movably connected to the outer wall of the L-shaped support plate 112 on the side close to the fixed vertical plate 10. The end of the piston rod 113 is movably sleeved inside the air cylinder 114 on the side wall of the fixed vertical plate 10. The lower end of the air cylinder 114 is movably connected to the side wall of the fixed vertical plate 10. The end of the connecting strip 111 is fixedly connected to the limiting side plate 115. The lower end of the limiting side plate 115 is attached to the bottom plate of the L-shaped support plate 112. An electric telescopic rod 116 is fixedly connected to the middle part of the side wall of the limiting side plate 115 between the connecting strips 111, and a fixed transverse plate 117 is fixedly connected to the end of the electric telescopic rod 116. Moving rods 118 are fixedly connected to the outer walls of the two ends of the fixed transverse plate 117 close to one side of the limiting side plate 115. The moving rod 118 extends to the other side through the positioning holes 119 on the side wall of the limiting side plate 115, and support plates 1110 are movably sleeved on the outer wall of the moving rod 118 at even intervals, and the side wall of the limiting side plate 115 outside the support plate 1110 is movably connected to the end of the movable connecting rod 14.

[0045] The moving rod 118 is supported by the piston rod 113 and the air cylinder 114 to support the limiting side plate 115 in a horizontal position. At this time, the supporting plate 1110 is arranged parallel to the detection cylinder 4, and the end of the detection cylinder 4 close to the supporting plate 1110 is away from the moving sleeve 13 on the outer wall of the guide rod 12.

[0046] The axis of the support disk 1110 and the axis of the detection tube 4 are arranged on the same horizontal line, and a columnar magnetic block 1111 is fixedly installed in the middle of the opposite outer walls of the support disk 1110, and the columnar magnetic blocks 1111 on the outer walls of adjacent support disks 1110 have the same magnetic poles arranged opposite to each other, and X-shaped folding push rods 1112 are movably arranged on the outer walls on both sides of the support disk 1110, and the X-shaped folding push rods 1112 are symmetrically distributed about the columnar magnetic blocks 1111, and adjacent support disks 1110 are movably connected through the X-shaped folding push rods 1112.

[0047] Specifically, the electric telescopic rod 116 is started to telescope according to the length of the fan outer cylinder, driving the moving rod 118 to move. When the moving rod 118 moves, the adjacent support plate 1110 is forced to move through the repulsive force of the column magnetic block 1111 between the side walls. The support plate 1110 moves to push the X-shaped folding push rod 1112 to deflect and stretch, so that the overall length of the support plate 1110 is adapted to the length of the fan outer cylinder, and the fan outer cylinders of different lengths are supported and fixed. The pneumatic linear guide 2 is used to push the detection cylinder 4 to the end of the support plate 1110 at the end of the moving rod 118, and the fan outer cylinder is pushed from the port of the detection cylinder 4. The cylinder sleeve is placed outside all the support plates 1110. The scanning detection is completed when the detection cylinder 4 rotates and translates to fit the movable sleeve 13 on the outer wall of the end of the guide rod 12. Then the detection cylinder 4 continues to be pushed to move toward the fixed vertical plate 10. The detection cylinder 4 pushes the movable sleeve 13 to drive the movable connecting rod 14 to squeeze the limiting side plate 115 downward, driving the limiting side plate 115 to deflect along the fixed plate 101 through the connecting strip 111. At the same time, the connecting strip 111 pushes the piston rod 113 to compress the internal gas of the gas cylinder 114, so that the support plate 1110 deflects and tilts downward in the detection cylinder 4, which is convenient for sliding the outer cylinder of the fan off the outside of the support plate 1110 to facilitate unloading.

[0048] In order to avoid the problem that the traditional testing equipment uses hydraulic rods to extend and retract to clamp the workpiece for rotation testing, the holding force is too large and it is easy to damage it. Figure 1 and Figure 6-Figure 10 As shown, the following preferred technical solutions are provided:

[0049] The support plate 1110 includes a circular shell 11101 and a positioning sleeve 11102 fixedly connected to the outer walls at both ends of the circular shell 11101. An integral positioning sleeve 11103 is evenly spaced on the outer wall of the circular shell 11101 outside the positioning sleeve 11102. A support rod 11104 is movably sleeved in the positioning sleeve 11103. The end of the support rod 11104 outside the positioning sleeve 11103 is fixedly connected to a first magnetic ball 11105. The other end of the support rod 11104 extends into the interior of the circular shell 11101, and a reset spring 11106 is fixedly connected to the end of the support rod 11104. The end of the reset spring 11106 is fixedly connected to the outer wall of a fixed block 11107. The fixed block 11107 is suspended between the inner walls on both sides of the circular shell 11101 through a fixed rod.

[0050] An installation groove 11108 is opened on the outer wall of one side of the support rod 11104 adjacent to the reset spring 11106, and an elastic component 11109 is fixedly connected to the inner wall of the port corresponding to the installation groove 11108, and a wedge-shaped block 111010 is fixedly connected to the end of the elastic component 11109. The wedge-shaped block 111010 is movably engaged in the installation groove 11108, and when the elastic component 11109 maintains a normal relaxation state, the end of the wedge-shaped block 111010 extends to the outside of the port of the installation groove 11108.

[0051] Positioning grooves 111011 are evenly spaced on the inner wall of the circular shell 11101 opposite to the end of the wedge-shaped blocking block 111010, a connecting hole 111012 is opened on the partition plate of the positioning groove 111011 away from the port side, a guide rod 111013 is movably arranged in the connecting hole 111012, the guide rod 111013 extends through and extends to the outside of the circular shell 11101 and is arranged corresponding to the support rod 11104, the end of the guide rod 111013 outside the circular shell 11101 is fixedly connected to the second magnetic ball 111014, the outer wall of the guide rod 111013 in the positioning groove 111011 is movably connected with a connecting rod 111015, the end of the connecting rod 111015 is movably connected to the side wall of the pushing block 111016, and the pushing block 111016 is movably engaged between the inner walls of the positioning groove 111011.

[0052] When the elastic component 11109 maintains a normal relaxed state, the wedge-shaped block 111010 is located below the positioning groove 111011. At this time, the connecting end of the connecting rod 111015 and the guide rod 111013 is close to the connecting hole 111012 at the bottom of the positioning groove 111011, and the pushing block 111016 is located at the port of the positioning groove 111011, and the pushing block 111016 and the inner wall of the positioning groove 111011 are connected by a spring.

[0053] Specifically, the fan outer cylinder is placed outside all the support plates 1110, and the first magnetic ball 11105 outside the support plate 1110 is attracted to drive the support rod 11104 to move and fit the inner wall of the fan outer cylinder. The support rod 11104 pushes the first magnetic ball 11105 to lift the fan outer cylinder so that it is suspended outside the support plate 1110. When the support rod 11104 moves, the second magnetic ball 111014 is also attracted to drive the guide rod 111013 to move. The second magnetic ball 111014 is attracted and suspended in the inner cavity of the fan outer cylinder. When the guide rod 111013 moves, the connecting rod 111015 is used to pull the squeezing block 111016 to move to the inside of the positioning groove 111011, and the end of the positioning groove 111011 is exposed. When the support rod 11104 moves, it drives the wedge-shaped block 111010 to slide and engage in the corresponding positioning groove 111011 port. The wedge-shaped block 111010 engages with the positioning groove 111011 to fix the support rod 11104 to adaptively adjust and support the fan outer cylinder. The magnetic force of the magnetic ball is used to adsorb the inner wall of the fan outer cylinder to stretch the support rod 11104 and adjust the wedge-shaped block 111010 to engage with the positioning groove 111011 to support and fix it. This avoids the problem of damage to the wind cylinder due to excessive holding force when using a hydraulic rod to telescopically clamp the workpiece for rotation detection. After the magnetic ball is pulled out of the fan outer cylinder and loses its magnetic force, the support rod 11104 and the wedge-shaped block 111010 are automatically reset under the action of the reset spring 11106, which is convenient and practical.

[0054] In order to better demonstrate the fan outer cylinder surface crack detection device, this embodiment provides a method for using the fan outer cylinder surface crack detection device, including the following steps:

[0055] Step 1: Start the electric telescopic rod 116 to adjust the telescopic length according to the length of the fan outer cylinder, driving the moving rod 118 to move. When the moving rod 118 moves, it forces the adjacent support plate 1110 to move through the repulsive force of the column magnetic block 1111 between the side walls. The movement of the support plate 1110 pushes the X-shaped folding push rod 1112 to deflect and extend, so that the overall length of the support plate 1110 is adapted to the length of the fan outer cylinder;

[0056] Step 2: Use the pneumatic linear guide 2 to push the detection tube 4 to the end of the support plate 1110 at the end of the moving rod 118, and put the fan outer tube on the outside of all the support plates 1110 from the port of the detection tube 4. The first magnetic ball 11105 on the outside of the support plate 1110 is attracted to drive the support rod 11104 to move and fit the inner wall of the fan outer tube. The support rod 11104 pushes the first magnetic ball 11105 to lift the fan outer tube so that it is suspended outside the support plate 1110.

[0057] Step three: when the support rod 11104 moves, the second magnetic ball 111014 is also attracted to drive the guide rod 111013 to move. The second magnetic ball 111014 is attracted and suspended in the inner cavity of the fan outer cylinder. When the guide rod 111013 moves, the connecting rod 111015 is used to pull the pushing block 111016 to move to the inside of the positioning groove 111011, and the end of the positioning groove 111011 is exposed. When the support rod 11104 moves, it drives the wedge-shaped block 111010 to slide and engage in the corresponding end of the positioning groove 111011. The wedge-shaped block 111010 engages with the positioning groove 111011 to fix the support rod 11104 to adaptively adjust and support the fan outer cylinder;

[0058] Step 4: Then, the pneumatic linear guide 2 is used to drive the detection cylinder 4 to move toward the other end of the fan outer cylinder. The drive motor 35 is started while the movement is in progress. The drive motor 35 drives the rotating cylinder 33 and the transmission gear ring 34 between the side walls of the L-shaped support seat 31 to rotate through the pulley group 36. The transmission gear ring 34 engages with the meshing tooth groove 6 to drive the detection cylinder 4 to rotate in the positioning ring 9.

[0059] Step 5: When the detection tube 4 rotates, the crack scanning probes 5 evenly spaced on the inner walls of the two end ports are used to perform an array scan on the fan outer tube. The annular crack scanning probes 5 form multiple scanning surfaces to perform crack scan on the entire fan outer tube during translation. When the detection tube 4 moves to fit the movable sleeve 13 on the outer wall at the end of the guide rod 12, the scanning and detection is completed, and the fan outer tube is slid and removed from the outside of the support plate 1110.

[0060] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0061] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fan outer cylinder surface crack detection device, comprising a support plate (1) and pneumatic linear guides (2) fixedly mounted on both sides of the upper end of the support plate (1), wherein the top of the pneumatic slider in the upper end slide groove of the pneumatic linear guide (2) is fixedly connected to the lower end of a power member (3), characterized in that: A detection cylinder (4) is movably arranged at the upper end of the power member (3), and crack scanning probes (5) are fixedly connected to the inner wall of the two end ports of the detection cylinder (4) at even intervals in an annular shape, and a tooth groove (6) is arranged in the middle of the outer wall of the detection cylinder (4), and mounting grooves (7) are opened on the outer wall of the detection cylinder (4) on both sides of the tooth groove (6), and steel balls (8) are evenly and movably engaged in the mounting grooves (7), one end of the steel ball (8) extends to the outside of the port of the mounting groove (7), and a steel ball (8) is movably sleeved on the outer wall of the end of the detection cylinder (4) outside the port of the mounting groove (7). A positioning ring (9) is provided with a limiting groove (16) on the inner wall of the positioning ring (9), the positioning ring (9) is clamped on the outside of the steel ball (8) through the limiting groove (16), and the bottom oblique wall of the positioning ring (9) is fixedly connected to the power member (3), a fixed vertical plate (10) is provided on the top of the support plate (1) on one side of the detection cylinder (4), a wind tube bracket (11) is provided on the outer wall of the fixed vertical plate (10) on the side close to the detection cylinder (4), the wind tube bracket (11) is used to support the outer cylinder of the fan, and the positioning ring (9) on both sides of the top of the wind tube bracket (11) on the side close to the wind tube bracket (11) Guide rods (12) are fixedly connected to the inclined walls respectively, a movable sleeve (13) is movably sleeved on the outer wall adjacent to the end of the guide rod (12), a movable connecting rod (14) is movably connected to the bottom of the movable sleeve (13) through a movable pin, the other end of the movable connecting rod (14) is movably connected to the top of the wind tube bracket (11), and an intelligent controller (15) is installed on the upper end of the support plate (1) outside the pneumatic linear guide rail (2); the power member (3) includes an L-shaped support seat (31) fixedly connected to the inclined walls on both sides of the bottom of the positioning ring (9), and adjacent L-shaped support seats (3 1), a reinforcing horizontal plate (32) is arranged between the side walls of the L-shaped support seat (31) at the upper end of the reinforcing horizontal plate (32), a rotating drum (33) is movably arranged between the side walls of the L-shaped support seat (31), a transmission gear ring (34) is fixedly sleeved at a position corresponding to the meshing tooth groove (6) on the outer wall of the rotating drum (33), the transmission gear ring (34) extends into the meshing tooth groove (6) and meshes therewith, a driving motor (35) is arranged at the upper end of the bottom plate of the L-shaped support seat (31) at one end of the rotating drum (33), and an output end of the driving motor (35) is movably connected to a shaft rod at one end of the rotating drum (33) through a pulley group (36);The air duct bracket (11) comprises a connecting strip (111) movably connected to the fixed plates (101) at both ends of the side wall of the fixed vertical plate (10) and an L-shaped support plate (112) fixedly connected to the bottom of the connecting strip (111); a piston rod (113) is movably connected to the outer wall of the L-shaped support plate (112) on the side close to the fixed vertical plate (10); the end of the piston rod (113) is movably sleeved inside the air cylinder (114) on the side wall of the fixed vertical plate (10); the lower end of the air cylinder (114) is movably connected to the side wall of the fixed vertical plate (10); the end of the connecting strip (111) is fixedly connected to the limiting side plate (115); the lower end of the limiting side plate (115) is fitted to the fixed vertical plate (10); On the bottom plate of the L-shaped support plate (112), an electric telescopic rod (116) is fixedly connected at the middle of the side wall of the limiting side plate (115) between the connecting strips (111), and a fixed transverse plate (117) is fixedly connected to the end of the electric telescopic rod (116). Moving rods (118) are respectively fixedly connected to the outer wall of one side of the limiting side plate (115) at both ends of the fixed transverse plate (117). The moving rod (118) extends to the other side through a positioning hole (119) on the side wall of the limiting side plate (115), and support plates (1110) are evenly spaced and movably sleeved on the outer wall of the moving rod (118). The limiting side plate on the outer side of the support plate (1110) The side wall (115) is movably connected to the end of the movable connecting rod (14), the axis of the support disk (1110) and the axis of the detection tube (4) are arranged on the same horizontal line, and a column magnetic block (1111) is fixedly installed at the middle of the opposite outer wall of the support disk (1110), and the column magnetic blocks (1111) on the outer walls of adjacent support disks (1110) have the same magnetic poles arranged opposite to each other, and X-shaped folding push rods (1112) are movably arranged on the outer walls of both sides of the support disk (1110), and the X-shaped folding push rods (1112) are symmetrically distributed about the column magnetic block (1111), and the adjacent support disks (1110) are connected by the X-shaped folding push rods (1111). 2) being movably connected, the support plate (1110) comprises a circular shell (11101) and a positioning sleeve (11102) fixedly connected to the outer walls at both ends of the circular shell (11101), a positioning sleeve (11103) is evenly spaced on the outer wall of the circular shell (11101) outside the positioning sleeve (11102), a support rod (11104) is movably sleeved in the positioning sleeve (11103), a first magnetic ball (11105) is fixedly connected to the end of the support rod (11104) outside the positioning sleeve (11103), and the other end of the support rod (11104) extends into the interior of the circular shell (11101). ; 2. A fan outer cylinder surface crack detection device as claimed in claim 1, characterized in that: The fixed vertical plate (10) is arranged on a side of the upper end of the support plate (1) away from the detection tube (4), the fixed vertical plate (10) and the support plate (1) are an integrally formed structure, and the pneumatic linear guide rails (2) are symmetrically distributed about the fixed vertical plate (10), the fixed vertical plate (10) is a T-shaped structure, and the horizontal width of the upper part of the fixed vertical plate (10) is greater than the spacing length of the pneumatic linear guide rails (2).

3. A fan outer cylinder surface crack detection device as claimed in claim 2, characterized in that: The movable rod (118) is supported by the piston rod (113) and the air cylinder (114) to support the limiting side plate (115) in a horizontal arrangement. At this time, the support plate (1110) and the detection tube (4) are arranged in parallel, and the end of the detection tube (4) close to the support plate (1110) is away from the movable sleeve (13) on the outer wall of the guide rod (12).

4. A fan outer cylinder surface crack detection device as claimed in claim 3, characterized in that: The end of the support rod (11104) in the circular shell (11101) is fixedly connected to a return spring (11106), and the end of the return spring (11106) is fixedly connected to the outer wall of the fixed block (11107). The fixed block (11107) is suspended between the inner walls on both sides of the circular shell (11101) through the fixed rod.

5. A fan outer cylinder surface crack detection device as claimed in claim 4, characterized in that: An installation groove (11108) is provided on the outer wall of one side of the support rod (11104) adjacent to the reset spring (11106); an elastic component (11109) is fixedly connected to the inner wall of the port corresponding to the installation groove (11108); a wedge-shaped block (111010) is fixedly connected to the end of the elastic component (11109); the wedge-shaped block (111010) is movably engaged in the installation groove (11108); and when the elastic component (11109) maintains a normal relaxation state, the end of the wedge-shaped block (111010) extends to the outside of the port of the installation groove (11108).

6. A fan outer cylinder surface crack detection device as claimed in claim 5, characterized in that: Positioning grooves (111011) are evenly spaced on the inner wall of the circular shell (11101) opposite to the end of the wedge-shaped block (111010), a connecting hole (111012) is opened on the partition plate on the side of the positioning groove (111011) away from the port, and a guide rod (111013) is movably arranged in the connecting hole (111012), and the guide rod (111013) extends through and extends to the outside of the circular shell (11101) and corresponds to the support rod (11104 ) is arranged, the end of the guide rod (111013) outside the circular shell (11101) is fixedly connected to the second magnetic ball (111014), the outer wall of the guide rod (111013) in the positioning groove (111011) is movably connected to the connecting rod (111015), the end of the connecting rod (111015) is movably connected to the side wall of the squeezing and pushing block (111016), and the squeezing and pushing block (111016) is movably engaged between the inner walls of the positioning groove (111011).

7. A fan outer cylinder surface crack detection device as claimed in claim 6, characterized in that: When the elastic component (11109) maintains a normal relaxed state, the wedge-shaped block (111010) is located below the positioning groove (111011). At this time, the connecting end of the connecting rod (111015) and the guide rod (111013) is close to the connecting hole (111012) at the bottom of the positioning groove (111011), and the pushing block (111016) is located at the end of the positioning groove (111011).

8. A method for using a fan outer cylinder surface crack detection device as claimed in claim 7, characterized in that: The following steps are involved: S1: starting the electric telescopic rod (116) to perform telescopic adjustment according to the length of the fan outer cylinder, driving the moving rod (118) to move, and when the moving rod (118) moves, the adjacent support plate (1110) is forced to move by the repulsive force of the column magnetic block (1111) between the side walls, and the movement of the support plate (1110) pushes the X-shaped folding push rod (1112) to perform deflection and extension adjustment, so that the overall length of the support plate (1110) is adapted to the length of the fan outer cylinder; S2: using the pneumatic linear guide rail (2) to push the detection tube (4) to the end of the support plate (1110) at the end of the moving rod (118), and putting the fan outer tube on the outside of all the support plates (1110) from the port of the detection tube (4), the first magnetic ball (11105) outside the support plate (1110) is attracted to drive the support rod (11104) to move and fit the inner wall of the fan outer tube, and the support rod (11104) pushes the first magnetic ball (11105) to lift the fan outer tube so that it is suspended outside the support plate (1110); S3: When the support rod (11104) moves, the second magnetic ball (111014) is also attracted to drive the guide rod (111013) to move. The second magnetic ball (111014) is attracted and suspended in the inner cavity of the fan outer cylinder. When the guide rod (111013) moves, the connecting rod (111015) is used to pull the pushing block (111016) to move toward the inner side of the positioning groove (111011), and the end of the positioning groove (111011) is exposed. When the support rod (11104) moves, the wedge-shaped clamping block (111010) is driven to slide and engage in the corresponding end of the positioning groove (111011). The wedge-shaped clamping block (111010) engages with the positioning groove (111011) to fix the support rod (11104) to adaptively adjust and support the fan outer cylinder; S4: Then, the pneumatic linear guide (2) is used to drive the detection cylinder (4) to move toward the other end of the fan outer cylinder. The drive motor (35) is started while the movement is being carried out. The drive motor (35) drives the rotating cylinder (33) and the transmission gear ring (34) between the side walls of the L-shaped support seat (31) to rotate through the pulley group (36). The transmission gear ring (34) engages with the meshing tooth groove (6) to drive the detection cylinder (4) to rotate in the positioning ring (9). S5: When the detection cylinder (4) rotates, the crack scanning probes (5) evenly spaced on the inner walls of the two end ports thereof are used to perform an array scan on the fan outer cylinder. The crack scanning probes (5) arranged in an annular manner form multiple scanning surfaces to perform crack scanning on the entire fan outer cylinder during translation. When the detection cylinder (4) moves to fit the moving sleeve (13) on the outer wall of the end of the guide rod (12), the scanning detection is completed, and the fan outer cylinder is slid and removed from the outside of the support plate (1110).

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