Ultrasonic flaw detection device and method based on agricultural transmission shaft manufacturing and detection

Abstract

The invention discloses an ultrasonic flaw detection device and method based on agricultural transmission shaft manufacturing and detection, and relates to the technical field of ultrasonic flaw detection. According to the ultrasonic flaw detection device and method based on agricultural transmission shaft manufacturing and detection, the lifting rod, the control box, the multiple ultrasonic flaw detection mechanisms and the ultrasonic receiver are matched, and the total number of the ultrasonic flaw detection mechanisms is increased or decreased, so that the inner diameter of a closed annular structure formed by the multiple ultrasonic flaw detection mechanisms is changed; the agricultural transmission shaft flaw detection device can be suitable for agricultural transmission shafts with various diameters, achieves the purpose of flaw detection of the agricultural transmission shafts with various diameters, is wide in application range, and can clean the outer wall of the transmission shaft in time before flaw detection of the outer wall of the transmission shaft by using an ultrasonic transmitter through cooperation of an insertion column, an arc-shaped strip and fiber bristles. Before flaw detection, the surface cleanliness of the transmission shaft is ensured, adhered impurities are prevented from influencing propagation and receiving of ultrasonic signals, and the flaw detection result is prevented from being covered or misled.

Description

Technical Field

[0001] The present invention relates to the technical field of ultrasonic flaw detection, and in particular to an ultrasonic flaw detection device and method based on the production and detection of agricultural transmission shafts. Background Art

[0002] With the rapid advancement of agricultural mechanization, the status of agricultural machinery in agricultural production has become increasingly prominent. Among them, the agricultural drive shaft is the core component of power transmission. Its structural stability and reliability are crucial to mechanical performance and safety. Therefore, the flaw detection of agricultural drive shafts after production has become a key link to ensure quality. Against this background, an ultrasonic flaw detection device came into being. This device uses ultrasonic technology to accurately detect potential problems such as tiny cracks, crack extension and fatigue damage inside the drive shaft, helping staff to promptly discover and resolve potential quality defects before the product leaves the factory, thereby effectively reducing the risk of accidents and ensuring the safe operation of the machinery.

[0003] Reference publication number CN106501371B discloses a precise high-speed acoustic emission flaw detection device for pipe fittings. The pressure plate is driven by a cylinder to press the agricultural drive shaft. It can be suitable for agricultural drive shafts of different lengths and is not easy to loosen after being tightened. There is an internal movable detection component placed in the agricultural drive shaft and an outer wall detection ring on the outside. During the detection process, the outer wall detection ring is sleeved on the outside of the pipe fitting. The outer wall detection ring drives the internal movable detection component to move synchronously through the electromagnetic field, thereby realizing synchronous detection of the inside and outside of the agricultural drive shaft. Since the electromagnetic field can improve the acoustic emission flaw detection effect, the electromagnetic field can be used to improve the detection accuracy. The outer wall detection ring is driven by a pair of motors to drive the screw and cooperate with two guide rods to move, thereby realizing uniform movement. There is an electromagnetic ring on one side of the pressure plate. Before placement, the internal movable detection component can be connected to it by power. When detecting, the power is turned off and the outer wall detection ring drives it to move together. This can ensure that the internal movable measurement magnetic ring is in the center position before it becomes inactive.

[0004] A comprehensive analysis of the above reference patents reveals the following defects: The existing ultrasonic flaw detection device and method based on the production and inspection of agricultural drive shafts are difficult to perform flaw detection on agricultural drive shafts of various diameters, which limits the scope of application of the device. In addition, impurities may adhere to the outer wall of the agricultural drive shaft after production. Before flaw detection of the agricultural drive shaft, it is difficult to remove the impurities on the outer wall in time, which affects the flaw detection effect. Therefore, it is necessary to provide an ultrasonic flaw detection device and method based on the production and inspection of agricultural drive shafts to solve the above technical problems. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides an ultrasonic flaw detection device and method based on the production and inspection of agricultural drive shafts, which solves the problem that it is difficult to perform flaw detection on agricultural drive shafts of various diameters, which limits the scope of application of the device. In addition, after the agricultural drive shaft is manufactured, impurities may adhere to its outer wall. Before the agricultural drive shaft is flawed, it is difficult to remove the impurities on its outer wall in time, which affects the flaw detection effect.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an ultrasonic flaw detection device based on the production and detection of agricultural transmission shafts, comprising: A lifting rod, wherein a control box is fixedly provided in the middle of the lifting rod, an ultrasonic receiver is fixedly provided at the rear end of the control box, and a handle is fixedly provided at the top of the lifting rod; Several ultrasonic flaw detection mechanisms are used to clean the outer wall of the agricultural transmission shaft and then perform flaw detection on the outer wall. Several of the ultrasonic flaw detection mechanisms are connected end to end to form a closed ring structure, and one of the ultrasonic flaw detection mechanisms is fixedly connected to the bottom of the lifting rod; Each of the ultrasonic flaw detection mechanisms includes an arc-shaped connecting block assembly, a cleaning brush assembly is provided at the rear end of the arc-shaped connecting block assembly, an ultrasonic flaw detection assembly is provided on the outer wall of the arc-shaped connecting block assembly, and a guide rod assembly is passed through the internal thread of the arc-shaped connecting block assembly.

[0007] Preferably, the arc-shaped connecting block assembly includes an arc-shaped support plate, a limiting strip is fixedly provided at the rear end of the arc-shaped support plate, and plug posts are slidably passed through both sides of the rear end of the limiting strip, a pull plate is fixedly provided between the rear ends of the two plug posts, and a first spring is provided on the outside of the plug post.

[0008] Preferably, the first spring is fixedly connected between the rear end of the limit clip and the front wall of the pull plate, a limit slot is provided on one side of the front end of the arc-shaped support plate, and accommodating cavities are provided on both the left and right sides of the limit slot, and piston blocks are slidably provided in the two accommodating cavities, and a limit column is fixedly provided on the side where the two piston blocks are close to each other, and the limit column slides through the limit slot, and the piston block is fixedly connected to the inner wall of the accommodating cavity by a second spring, and a threaded circular hole is provided inside the arc-shaped support plate.

[0009] Preferably, an insert block is fixedly provided at one end of the arc-shaped support plate, a movable cavity is opened between the insert block and the interior of the arc-shaped support plate, a push plate is slidably provided between the inner walls of the movable cavity, the rear end of the push plate is fixedly connected to the inner wall of the movable cavity by a number of third springs, a cross bar located in front of the push plate is slidably provided inside the movable cavity, and an adjustment column sliding through the arc-shaped support plate is fixedly provided on one side of the front end of the cross bar.

[0010] Preferably, a positioning column that slides through the plug block is fixedly provided on the other side of the front end of the cross bar, a bearing cavity is provided at the other end of the arc-shaped support plate, the bearing cavity is adapted to the plug block, a positioning hole is provided at the front end of the bearing cavity, the positioning hole is adapted to the positioning column, a clamping block is fixedly provided at the other end of the arc-shaped support plate, a clamping groove is provided on the outer wall of the arc-shaped support plate close to the plug block, and the clamping groove is adapted to the clamping block.

[0011] Preferably, the cleaning brush assembly includes an arc-shaped bar, which passes through the limiting card bar, and the inner wall of the arc-shaped bar is evenly and fixedly provided with a number of fiber bristles. Two through holes are opened in the arc-shaped bar, and the two through holes correspond to two plug posts respectively.

[0012] Preferably, the ultrasonic flaw detection component includes a protective box, which is fixedly connected to the outer wall of the arc-shaped support plate. A rotating shaft is rotatably arranged between the two side walls of the inner cavity of the protective box. A sleeve is fixedly sleeved on the outside of the rotating shaft. A support rod is fixedly arranged in the middle of the sleeve, and the support rod passes through the limiting groove.

[0013] Preferably, an ultrasonic transmitter is fixedly provided at one end of the support rod away from the sleeve, one end of the rotating shaft passes through the outer wall of the protective box and is fixedly provided with a first adjusting disk, a sealing cover is rotatably provided at the front end of the protective box, a first magnet sheet is fixedly provided on one side of the front end of the protective box, and an iron sheet is fixedly provided on one side of the rear end of the sealing cover, and the iron sheet corresponds to the first magnet sheet.

[0014] Preferably, the guide rod assembly includes an adjusting rod, the adjusting rod threaded through a threaded circular hole, the front and rear walls of the adjusting rod are provided with scale lines, a semicircular accommodating seat is fixedly provided at one end of the adjusting rod close to the fiber bristles, a guide ball is rotatably provided in the semicircular accommodating seat, and a second adjusting disk is fixedly provided at the end of the adjusting rod away from the semicircular accommodating seat.

[0015] The present invention also provides an ultrasonic flaw detection method based on the production and inspection of agricultural transmission shafts, using an ultrasonic flaw detection device based on the production and inspection of agricultural transmission shafts. The specific method includes the following steps: Step 1: According to the diameter of the agricultural transmission shaft to be tested, the total number of ultrasonic flaw detection mechanisms is increased or decreased so that the inner diameter of the closed ring structure formed by the multiple ultrasonic flaw detection mechanisms meets the required value. After the total number of ultrasonic flaw detection mechanisms is changed, the arc-shaped connecting block components in each ultrasonic flaw detection mechanism are connected end to end to form a new closed ring structure, which is then sleeved on the outside of the agricultural transmission shaft; Step 2: Then, screw each guide rod assembly in turn so that the ends of each guide rod assembly that are close to each other are in contact with the outer wall of the agricultural transmission shaft, and the distance between each arc-shaped connecting block assembly and the outer wall of the agricultural transmission shaft is equal; Step 3: Then hold the handle, pull the lifting rod and several ultrasonic flaw detection mechanisms and move them backward along the outer wall of the agricultural drive shaft at the same time. During the process, the cleaning brush assembly cleans the outer wall of the agricultural drive shaft, and several guide rod assemblies roll backward along the cleaned outer wall of the agricultural drive shaft. At the same time, several ultrasonic flaw detection assemblies cooperate with ultrasonic receivers to perform ultrasonic flaw detection on the agricultural drive shaft to determine the defect location on the agricultural drive shaft. Beneficial effects

[0016] The present invention provides an ultrasonic flaw detection device and method for manufacturing and testing agricultural drive shafts. Compared with the existing technology, it has the following advantages: 1. An ultrasonic flaw detection device and method for manufacturing and testing agricultural drive shafts. Through the interaction between a lifting rod, a control box, multiple ultrasonic flaw detection mechanisms, and an ultrasonic receiver, the inner diameter of the closed ring structure formed by the multiple ultrasonic flaw detection mechanisms can be changed by increasing or decreasing the total number of ultrasonic flaw detection mechanisms. This device is suitable for agricultural drive shafts of various diameters, achieving the purpose of flaw detection on agricultural drive shafts of various diameters, and has a wide range of applications.

[0017] 2. An ultrasonic flaw detection device and method based on the production and inspection of agricultural transmission shafts. Through the mutual cooperation between the arc-shaped support plate, the insert block, the positioning column and the bearing cavity, the adjusting column is pressed into the movable cavity, and the positioning column moves accordingly and disengages from the positioning hole in the adjacent ultrasonic flaw detection mechanism. Then, the two adjacent ultrasonic flaw detection mechanisms can be separated, thereby achieving the purpose of dismantling the redundant ultrasonic flaw detection mechanism. Similarly, the adjusting column is first pressed into the movable cavity, and the positioning column moves into the movable cavity. Then, the insert block is inserted into the bearing cavity on the new ultrasonic flaw detection mechanism, and the pressure on the adjusting column is released. Under the elastic action of the third spring, the positioning column is inserted into the positioning hole on the new ultrasonic flaw detection mechanism, thereby achieving the purpose of installing the new ultrasonic flaw detection mechanism and the purpose of quickly increasing or decreasing the total number of ultrasonic flaw detection mechanisms. It is relatively convenient to use.

[0018] 3. An ultrasonic flaw detection device and method based on the production and inspection of agricultural drive shafts. Through the mutual cooperation between the limit card strips, the plug-in column, the arc strips and the fiber bristles, the outer wall of the agricultural drive shaft can be cleaned in time before the outer wall of the agricultural drive shaft is inspected using the ultrasonic transmitter, thereby ensuring the cleanliness of the surface of the agricultural drive shaft before inspection, avoiding the influence of adhered impurities on the propagation and reception of the ultrasonic signal, preventing the masking or misleading of the inspection results, and ensuring normal inspection results. In addition, the cleaning brush assembly can be quickly disassembled from the arc-shaped connecting block assembly to facilitate regular cleaning of the cleaning brush assembly to ensure normal use results.

[0019] 4. An ultrasonic flaw detection device and method based on the production and inspection of agricultural drive shafts. Through the mutual cooperation between the adjustment rod, scale line, semicircular receiving seat and guide ball, the position of the guide ball can be accurately adjusted to ensure that the ends of multiple guide balls close to each other are in full contact with the outer wall of the agricultural drive shaft. In this way, when the multiple ultrasonic flaw detection mechanisms are pulled backward for flaw detection, the spacing between each arc-shaped connecting block assembly and the outer wall of the agricultural drive shaft is always maintained at the same level. This not only prevents the ultrasonic transmitter from colliding with the outer wall of the agricultural drive shaft and causing damage, but also ensures that the spacing between each ultrasonic transmitter and the outer wall of the agricultural drive shaft is always the same, ensuring the accuracy and consistency of the flaw detection results.

[0020] 5. An ultrasonic flaw detection device and method for manufacturing and inspecting agricultural drive shafts. Through the mutual cooperation between a protective box, a rotating shaft, a support rod, an ultrasonic transmitter, and a sealing cover, when the device is not needed, the rotating shaft can be rotated to rotate the support rod and ultrasonic transmitter into the protective box. Then, the sealing cover is covered on the front end of the protective box to store the ultrasonic transmitter in the protective box. This prevents the ultrasonic transmitter from being subjected to external collisions or contamination during storage or transportation, helps to extend the service life of the device and reduce maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a first stereogram of the present invention; Figure 2 is a second stereoscopic view of the present invention; Figure 3 This is an exploded view of the ultrasonic flaw detection mechanism of the present invention; Figure 4 It is a first stereoscopic diagram of the ultrasonic flaw detection mechanism of the present invention; Figure 5 is a second stereoscopic view of the ultrasonic flaw detection mechanism of the present invention; Figure 6 This is a separation diagram of the arc-shaped connecting block assembly and the cleaning brush assembly of the present invention; Figure 7 A perspective view of the arc-shaped connecting block assembly of the present invention; Figure 8 A partial cross-sectional view of the arc-shaped connecting block assembly of the present invention; Figure 9 For the present invention Figure 8 A partial enlarged view of point A in the middle; Figure 10 For the present invention Figure 8 A partial enlarged view of point B in the middle; Figure 11 An exploded view of the ultrasonic flaw detection assembly of the present invention; Figure 12 A perspective view of the sealing cover of the present invention; Figure 13 is an exploded view of the guide rod assembly of the present invention; Figure 14 For the present invention Figure 13 A partial enlarged view of point C in the middle.

[0022] In the figure: 1, lifting rod; 2, control box; 3, ultrasonic flaw detection mechanism; 31, arc-shaped connecting block assembly; 311, arc-shaped support plate; 312, limiting card strip; 313, plug column; 314, pull plate; 315, first spring; 316, limiting notch; 317, accommodating chamber; 318, piston block; 319, limiting column; 3110, second spring; 3111, threaded circular hole; 3112, plug block; 3113, movable chamber; 3114, push plate; 3115, third spring; 3116, cross bar; 3117, adjusting column; 3118, positioning column; 3119, bearing chamber; 3120, fixed Position hole; 3121, card block; 3122, card slot; 32, cleaning brush assembly; 321, curved strip; 322, fiber bristles; 323, through hole; 33, ultrasonic flaw detection assembly; 331, protective box; 332, rotating shaft; 333, sleeve; 334, support rod; 335, ultrasonic transmitter; 336, first adjustment disk; 337, sealing cover; 338, first magnet sheet; 339, iron sheet; 34, guide rod assembly; 341, adjustment rod; 342, scale line; 343, semicircular receiving seat; 344, guide ball; 345, second adjustment disk; 4, ultrasonic receiver; 5, handle. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0024] The present invention provides two technical solutions: like Figures 1 to 3 The first embodiment is shown: an ultrasonic flaw detection device based on the production and detection of agricultural transmission shafts, comprising: A lifting rod 1, a control box 2 is fixedly provided through the middle of the lifting rod 1, an ultrasonic receiver 4 is fixedly provided at the rear end of the control box 2, and a handle 5 is fixedly provided at the top of the lifting rod 1; Several ultrasonic flaw detection mechanisms 3 are used to clean the outer wall of the agricultural transmission shaft and perform flaw detection on the outer wall. Several ultrasonic flaw detection mechanisms 3 are connected end to end to form a closed ring structure, and one ultrasonic flaw detection mechanism 3 is fixedly connected to the bottom of the lifting rod 1; Each ultrasonic flaw detection mechanism 3 includes an arc-shaped connecting block assembly 31, a cleaning brush assembly 32 is provided at the rear end of the arc-shaped connecting block assembly 31, an ultrasonic flaw detection assembly 33 is provided on the outer wall of the arc-shaped connecting block assembly 31, and a guide rod assembly 34 is passed through the internal thread of the arc-shaped connecting block assembly 31.

[0025] By cooperating with each other among the lifting rod 1, the control box 2, multiple ultrasonic flaw detection mechanisms 3 and the ultrasonic receiver 4, and by increasing or decreasing the total number of ultrasonic flaw detection mechanisms 3, the inner diameter of the closed ring structure formed by several ultrasonic flaw detection mechanisms 3 is changed. This can be applicable to agricultural drive shafts of various diameters, thereby achieving the purpose of flaw detection on agricultural drive shafts of various diameters, and has a wide range of applications.

[0026] like Figures 4 to 14The second embodiment is shown, which mainly differs from the first embodiment in that: an ultrasonic flaw detection device based on the production and detection of agricultural transmission shafts, the arc-shaped connecting block assembly 31 includes an arc-shaped support plate 311, a limit card strip 312 is fixedly provided at the rear end of the arc-shaped support plate 311, and a plug post 313 is slidably passed through both sides of the rear end of the limit card strip 312, a pull plate 314 is fixedly provided between the rear ends of the two plug posts 313, and a first spring 315 is sleeved on the outside of the plug post 313, and the first spring 315 is fixedly connected between the rear end of the limit card strip 312 and the front wall of the pull plate 314, a limit slot 316 is provided on one side of the front end of the arc-shaped support plate 311, and a accommodating cavity 317 is provided on the left and right sides of the limit slot 316. The two accommodating cavities 317 The cam 314 is provided with a plurality of springs 316 at the bottom end, and the springs 317 are provided with a plurality of springs 316 at the bottom end, and the plurality of springs 316 are provided with a plurality of springs 316 at the bottom end. The cam 3120 is provided on the front end of the cam 3121 so that the cam 3121 can be adjusted by the user. The brush assembly 32 includes an arc-shaped strip 321, which passes through the limiting card strip 312. A number of fiber bristles 322 are evenly fixed on the inner wall of the arc-shaped strip 321. Two through holes 323 are provided in the arc-shaped strip 321. The two through holes 323 correspond to the two plug posts 313 respectively. The ultrasonic flaw detection assembly 33 includes a protective box 331, which is fixedly connected to the outer wall of the arc-shaped support plate 311. A rotating shaft 332 is rotatably provided between the two side walls of the inner cavity of the protective box 331. A sleeve 333 is fixedly sleeved on the outside of the rotating shaft 332. A support rod 334 is fixedly provided in the middle of the sleeve 333. The support rod 334 passes through the limiting slot 316. An ultrasonic transmitter 335 is fixedly provided on the end of the support rod 334 away from the sleeve 333.One end of the rotating shaft 332 passes through the outer wall of the protective box 331 and is fixedly provided with a first adjustment disk 336. A sealing cover 337 is rotatably provided at the front end of the protective box 331. A first magnet piece 338 is fixedly provided on one side of the front end of the protective box 331. An iron piece 339 is fixedly provided on one side of the rear end of the sealing cover 337. The iron piece 339 corresponds to the first magnet piece 338. The guide rod assembly 34 includes an adjustment rod 341. The adjustment rod 341 is threadedly passed through the threaded circular hole 3111. Scale lines 342 are provided on the front and rear walls of the adjustment rod 341. A semicircular receiving seat 343 is fixedly provided on the end of the adjustment rod 341 close to the fiber bristles 322. A guide ball 344 is rotatably provided in the semicircular receiving seat 343. A second adjustment disk 345 is fixedly provided on the end of the adjustment rod 341 away from the semicircular receiving seat 343.

[0027] When the locking cam 3118 is unlocked, the locking cam 3119 is unlocked and the locking cam 3119 is unlocked, so that the two locking cams 3118 can be unlocked. Under the elastic action of the spring 3115, the positioning column 3118 is inserted into the positioning hole 3120 on the new ultrasonic flaw detection mechanism 3, so as to achieve the purpose of installing the new ultrasonic flaw detection mechanism 3 and quickly increase or decrease the total number of ultrasonic flaw detection mechanisms 3. It is convenient to use. Through the mutual cooperation between the limit card strip 312, the plug column 313, the arc strip 321 and the fiber brush 322, before using the ultrasonic transmitter 335 to detect the outer wall of the agricultural drive shaft, the outer wall of the agricultural drive shaft can be cleaned in time, and the cleanliness of the surface of the agricultural drive shaft is ensured before the flaw detection, so as to avoid the adhering impurities from affecting the propagation and reception of the ultrasonic signal, prevent the flaw detection results from being covered up or misleading, and ensure the normal flaw detection effect. , and the cleaning brush assembly 32 can be quickly disassembled from the arc-shaped connecting block assembly 31, so as to regularly clean the cleaning brush assembly 32 and ensure normal use effect. Through the mutual cooperation among the adjusting rod 341, the scale line 342, the semicircular receiving seat 343 and the guide ball 344, the position of the guide ball 344 can be accurately adjusted to ensure that the ends of the multiple guide balls 344 close to each other are fully in contact with the outer wall of the agricultural transmission shaft, so that in the process of pulling the multiple ultrasonic flaw detection mechanisms 3 to move backward for flaw detection, the same distance is always maintained between each arc-shaped connecting block assembly 31 and the outer wall of the agricultural transmission shaft, which not only prevents the ultrasonic transmitter 335 from colliding with the outer wall of the agricultural transmission shaft and causing damage, It can also ensure that the distance between each ultrasonic emitter 335 and the outer wall of the agricultural transmission shaft is always the same, ensuring the accuracy and consistency of the flaw detection results. Through the mutual cooperation between the protective box 331, the rotating shaft 332, the support rod 334, the ultrasonic emitter 335 and the sealing cover 337, when the device is not needed, the rotating shaft 332 can be rotated to rotate the support rod 334 and the ultrasonic emitter 335 into the protective box 331, and then the sealing cover 337 is covered on the front end of the protective box 331 to store the ultrasonic emitter 335 in the protective box 331, so as to avoid external collision or contamination of the ultrasonic emitter 335 during storage or transportation, thereby helping to extend the service life of the device and reduce maintenance costs.

[0028] The embodiment of the present invention further provides an ultrasonic flaw detection method based on the manufacturing and testing of agricultural transmission shafts, using an ultrasonic flaw detection device based on the manufacturing and testing of agricultural transmission shafts. The specific method includes the following steps: Step 1: According to the diameter of the agricultural transmission shaft to be tested, increase or decrease the total number of ultrasonic flaw detection mechanisms 3 so that the inner diameter of the closed ring structure formed by the plurality of ultrasonic flaw detection mechanisms 3 meets the requirements. When the inner diameter of the closed ring structure needs to be increased, add a new ultrasonic flaw detection mechanism 3. During the process, first separate two adjacent ultrasonic flaw detection mechanisms 3, press the corresponding adjustment column 3117 into the active cavity 3113, and the positioning column 3118 moves accordingly and disengages from the positioning hole 3120 in the adjacent ultrasonic flaw detection mechanism 3. It is possible to separate two adjacent ultrasonic flaw detection mechanisms 3, and then add a new ultrasonic flaw detection mechanism 3 between the two separated ultrasonic flaw detection mechanisms 3. In the process of adding the new ultrasonic flaw detection mechanism 3, first press the corresponding adjustment column 3117 into the active cavity 3113, and the positioning column 3118 moves into the active cavity 3113. Then, insert the insert block 3112 into the bearing cavity 3119 on the new ultrasonic flaw detection mechanism 3, and insert the card block 3121 on the new ultrasonic flaw detection mechanism 3 into the adjacent card slot 3122 at the same time, and release the adjustment button. The section column 3117 is pressed, and under the elastic action of the third spring 3115, the positioning column 3118 is inserted into the positioning hole 3120 on the new ultrasonic flaw detection mechanism 3 to complete the limit locking until the required number of ultrasonic flaw detection mechanisms 3 are installed. After that, several ultrasonic flaw detection mechanisms 3 are connected end to end to form a new closed ring structure. When the inner diameter of the closed ring structure needs to be reduced, the new ultrasonic flaw detection mechanism 3 is reduced. In the process, two adjacent ultrasonic flaw detection mechanisms 3 are first separated and the corresponding adjustment columns 3117 are moved toward the active cavity 31 13 is pressed, and the positioning post 3118 moves accordingly and disengages from the positioning hole 3120 in the adjacent ultrasonic flaw detection mechanism 3. Then, the two adjacent ultrasonic flaw detection mechanisms 3 can be separated. Then, the above operation is continued to remove the redundant ultrasonic flaw detection mechanisms 3 in sequence. Finally, the remaining ultrasonic flaw detection mechanisms 3 are connected end to end to form a new closed ring structure, which is then sleeved on the outside of the agricultural transmission shaft. The arc-shaped connecting block assembly 31 and the arc-shaped bar 321 are made of elastically deformable material and can produce elastic deformation within a certain range. Step 2: Then, screw each guide rod assembly 34 in turn, observing the scale line 342 during the process, and accurately fine-tune the position of the guide ball 344 to ensure that the ends of the multiple guide balls 344 that are close to each other are fully in contact with the outer wall of the agricultural drive shaft, and that the distance between each arc-shaped connecting block assembly 31 and the outer wall of the agricultural drive shaft is equal, that is, to ensure that the distance between each ultrasonic transmitter 335 and the outer wall of the agricultural drive shaft is the same; Step 3, then hold the handle 5, pull the lifting rod 1 and several ultrasonic flaw detection mechanisms 3 and move them backward along the outer wall of the agricultural drive shaft at the same time, wherein the bottom of the lifting rod 1 is fixedly connected to one of the protective boxes 331, and during the process, the fiber brush 322 cleans the outer wall of the agricultural drive shaft in time to clean up the impurities adhering to the outer wall of the agricultural drive shaft, and several guide balls 344 roll backward along the cleaned outer wall of the agricultural drive shaft, so that the distance between each ultrasonic transmitter 335 and the outer wall of the agricultural drive shaft is always maintained at the same level, and a plurality of ultrasonic transmitters 335 are used to perform a full range of flaw detection on a circle of the outer wall of the agricultural drive shaft to achieve full coverage of a circle of the outer wall of the agricultural drive shaft, and several ultrasonic transmitters When the device 335 moves backward along the outer wall of the cleaned agricultural transmission shaft, it cooperates with the ultrasonic receiver 4 to perform ultrasonic flaw detection on the agricultural transmission shaft to determine the defect location on the agricultural transmission shaft. The ultrasonic transmitter 335 and the ultrasonic receiver 4 belong to the existing technology well known to those skilled in the art. When the device is not needed, first open the sealing cover 337, use a certain force to rotate the rotating shaft 332, release the limit of the two limiting columns 319 on the support rod 334, rotate the support rod 334 and the ultrasonic transmitter 335 into the protective box 331, and then use the sealing cover 337 to cover the front end of the protective box 331, and store the ultrasonic transmitter 335 in the protective box 331.

[0029] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0030] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An ultrasonic flaw detection device based on the production and detection of agricultural transmission shafts, characterized in that: include: A lifting rod, wherein a control box is fixedly provided in the middle of the lifting rod, an ultrasonic receiver is fixedly provided at the rear end of the control box, and a handle is fixedly provided at the top of the lifting rod; Several ultrasonic flaw detection mechanisms are used to clean the outer wall of the agricultural transmission shaft and then perform flaw detection on the outer wall. Several of the ultrasonic flaw detection mechanisms are connected end to end to form a closed ring structure, and one of the ultrasonic flaw detection mechanisms is fixedly connected to the bottom of the lifting rod; Each of the ultrasonic flaw detection mechanisms includes an arc-shaped connecting block assembly, a cleaning brush assembly is provided at the rear end of the arc-shaped connecting block assembly, an ultrasonic flaw detection assembly is provided on the outer wall of the arc-shaped connecting block assembly, and a guide rod assembly is passed through the internal thread of the arc-shaped connecting block assembly.

2. The ultrasonic flaw detection device for agricultural transmission shaft manufacturing and testing according to claim 1 is characterized by: The arc-shaped connecting block assembly includes an arc-shaped support plate, a limit strip is fixedly provided at the rear end of the arc-shaped support plate, and plug posts are slidably passed through both sides of the rear end of the limit strip. A pull plate is fixedly provided between the rear ends of the two plug posts, and a first spring is sleeved on the outside of the plug post.

3. The ultrasonic flaw detection device for agricultural transmission shaft manufacturing and testing according to claim 2 is characterized by: The first spring is fixedly connected between the rear end of the limit clip and the front wall of the pull plate, and a limit slot is provided on one side of the front end of the arc-shaped support plate. Accommodation cavities are provided on both the left and right sides of the limit slot, and piston blocks are slidably provided in the two accommodating cavities. A limit column is fixedly provided on the side where the two piston blocks are close to each other, and the limit column slides through the limit slot. The piston block is fixedly connected to the inner wall of the accommodating cavity by a second spring, and a threaded circular hole is provided inside the arc-shaped support plate.

4. The ultrasonic flaw detection device for manufacturing and testing agricultural transmission shafts according to claim 3 is characterized by: An insert block is fixedly provided at one end of the arc-shaped support plate, and a movable cavity is opened between the insert block and the interior of the arc-shaped support plate, a push plate is slidably provided between the inner walls of the movable cavity, and the rear end of the push plate is fixedly connected to the inner wall of the movable cavity by a plurality of third springs, and a cross bar located in front of the push plate is slidably provided inside the movable cavity, and an adjustment column that slides through the arc-shaped support plate is fixedly provided on one side of the front end of the cross bar.

5. The ultrasonic flaw detection device for manufacturing and testing agricultural transmission shafts according to claim 4 is characterized in that: A positioning column that slides through the plug block is fixedly provided on the other side of the front end of the cross bar, a bearing cavity is provided at the other end of the arc-shaped support plate, and the bearing cavity is adapted to the plug block, a positioning hole is provided at the front end of the bearing cavity, and the positioning hole is adapted to the positioning column, a clamping block is fixedly provided at the other end of the arc-shaped support plate, and a clamping groove is provided on the outer wall of the arc-shaped support plate close to the plug block, and the clamping groove is adapted to the clamping block.

6. The ultrasonic flaw detection device for manufacturing and testing agricultural transmission shafts according to claim 3 is characterized by: The cleaning brush assembly includes an arc-shaped bar, which passes through the limiting card bar. A number of fiber bristles are evenly and fixedly provided on the inner wall of the arc-shaped bar. Two through holes are provided in the arc-shaped bar, and the two through holes correspond to the two plug posts respectively.

7. The ultrasonic flaw detection device for agricultural transmission shaft manufacturing and testing according to claim 3 is characterized by: The ultrasonic flaw detection component includes a protective box, which is fixedly connected to the outer wall of the arc-shaped support plate. A rotating shaft is rotatably arranged between the two side walls of the inner cavity of the protective box. A sleeve is fixedly sleeved on the outside of the rotating shaft. A support rod is fixedly arranged in the middle of the sleeve, and the support rod passes through the limiting slot.

8. The ultrasonic flaw detection device for manufacturing and testing agricultural transmission shafts according to claim 7, characterized in that: An ultrasonic transmitter is fixedly provided at one end of the support rod away from the sleeve, one end of the rotating shaft passes through the outer wall of the protective box and is fixedly provided with a first adjusting disk, a sealing cover is rotatably provided at the front end of the protective box, a first magnet sheet is fixedly provided on one side of the front end of the protective box, and an iron sheet is fixedly provided on one side of the rear end of the sealing cover, and the iron sheet corresponds to the first magnet sheet.

9. The ultrasonic flaw detection device for manufacturing and testing agricultural transmission shafts according to claim 6, characterized in that: The guide rod assembly includes an adjusting rod, the adjusting rod threaded through a threaded circular hole, the front and rear walls of the adjusting rod are both provided with scale lines, a semicircular accommodating seat is fixedly provided at one end of the adjusting rod close to the fiber bristles, a guide ball is rotatably provided in the semicircular accommodating seat, and a second adjusting disk is fixedly provided at the end of the adjusting rod away from the semicircular accommodating seat.

10. An ultrasonic flaw detection method based on the production and inspection of agricultural transmission shafts, characterized by: Using the ultrasonic flaw detection device based on the production and detection of agricultural transmission shafts according to any one of claims 1 to 9, the method includes the following steps: Step 1: According to the diameter of the agricultural transmission shaft to be tested, the total number of ultrasonic flaw detection mechanisms is increased or decreased so that the inner diameter of the closed ring structure formed by the multiple ultrasonic flaw detection mechanisms meets the required value. After the total number of ultrasonic flaw detection mechanisms is changed, the arc-shaped connecting block components in each ultrasonic flaw detection mechanism are connected end to end to form a new closed ring structure, which is then sleeved on the outside of the agricultural transmission shaft; Step 2: Then, screw each guide rod assembly in turn so that the ends of each guide rod assembly that are close to each other are in contact with the outer wall of the agricultural transmission shaft, and the distance between each arc-shaped connecting block assembly and the outer wall of the agricultural transmission shaft is equal; Step 3: Then hold the handle, pull the lifting rod and several ultrasonic flaw detection mechanisms and move them backward along the outer wall of the agricultural drive shaft at the same time. During the process, the cleaning brush assembly cleans the outer wall of the agricultural drive shaft, and several guide rod assemblies roll backward along the cleaned outer wall of the agricultural drive shaft. At the same time, several ultrasonic flaw detection assemblies cooperate with ultrasonic receivers to perform ultrasonic flaw detection on the agricultural drive shaft to determine the defect location on the agricultural drive shaft.

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