Sliding traction angle-adjustable magnetic defect detector auxiliary device

Abstract

The invention relates to a sliding traction angle-adjustable magnetic defect detector auxiliary device, which comprises a sleeve shell, an installation cavity for installing a magnetic defect detector main body is arranged in the sleeve shell, and the detection angle of a magnet yoke probe is adjustable; a driving cavity is formed in the working rod, and the upper end is connected and communicated with the left side wall of the sleeve shell; one end of the traction mechanism is clamped on the outer side of the tested workpiece, and the other end is connected with the sleeve shell through a traction rope; a pressing plate directly facing a power switch on the magnetic defect detector is arranged in the mounting cavity; a driving device is arranged in the driving cavity, a driving button of the driving device is arranged on the outer side wall of the working rod, a pressing plate is arranged in the mounting cavity, and the driving end of the driving device and the pressing plate are connected with a driving part, so that the pressing plate extrudes a power switch on the magnetic defect detector, and the magnetic defect detector is started and stopped. The auxiliary device provided by the invention is simple in structure, can help detection personnel to carry out magnetic powder detection work in a narrow space area, and can greatly reduce the labor intensity of the detection personnel through the traction mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of auxiliary devices for magnetic particle flaw detectors, in particular to an auxiliary device for magnetic particle flaw detectors with sliding traction and adjustable angle. Background Art

[0002] Magnetic particle testing is a nondestructive testing method for detecting discontinuities in ferromagnetic materials. It works by magnetizing a workpiece. Discontinuities within the material cause localized distortion of magnetic field lines at and near the surface, thereby generating a leakage magnetic field. This leakage magnetic field attracts magnetic particles applied to the workpiece surface. Under appropriate lighting conditions, visible magnetic traces can be observed, revealing the specific location, size, shape, and severity of the discontinuity. Magnetic particle testing is widely used in the nondestructive testing of metal components such as pressure vessels. Before conducting magnetic particle testing, a magnetic powder suspension is sprayed onto the surface of the component to be inspected to ensure effective adhesion of the particles. The inspector then uses a magnetic particle detector to conduct the inspection.

[0003] However, due to the weight of magnetic particle detectors, prolonged testing increases the workload of inspectors, making it difficult to continuously inspect metal parts. Furthermore, spatial limitations in the testing environment severely impact inspection, especially in confined areas such as the second- and third-stage blades of steam turbine rotors, further impacting inspection efficiency and accuracy. To address these challenges, it is necessary to design a magnetic particle detector auxiliary device with sliding traction and adjustable angle. Summary of the Invention

[0004] The present invention provides a sliding traction, angle-adjustable magnetic particle flaw detector auxiliary device, which can help inspectors carry out magnetic particle inspection work in narrow areas, and can greatly reduce the labor intensity of inspectors through the traction mechanism. At the same time, inspectors can obtain more ample observation time and field of view, thereby improving the stability and accuracy of magnetic particle inspection. It can also facilitate inspectors to start the magnetic particle flaw detector during the lifting process, so that the timing of starting is appropriate.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A sliding traction and angle-adjustable magnetic particle flaw detector auxiliary device, comprising:

[0007] The casing has an installation cavity for installing the main body of the magnetic particle detector, and the magnetic yoke probe of the magnetic particle detector passes through the right cavity wall of the installation cavity and is located outside the casing, and the detection angle of the magnetic yoke probe of the magnetic particle detector is adjustable;

[0008] A working rod, for the inspection personnel to hold, having a driving cavity therein, and an upper end connected to and in communication with the left side wall of the housing;

[0009] A traction mechanism, one end of which is clamped on the outside of the workpiece to be tested, and the other end of which is connected to the housing via a traction rope, so that the magnetic yoke probe of the magnetic particle detector on the housing can detect the workpiece along the surface of the workpiece;

[0010] A pressing plate facing the power switch on the magnetic particle detector is provided in the installation cavity, and the pressing plate can be moved closer to or away from the power switch on the magnetic particle detector;

[0011] A driving device is provided inside the above-mentioned driving cavity, a driving button of the above-mentioned driving device is provided on the outer wall of the above-mentioned working rod, a pressing plate is provided in the above-mentioned installation cavity, and a driving member is connected to the driving end of the above-mentioned driving device and the above-mentioned pressing plate. The above-mentioned driving device uses the above-mentioned driving member to make the above-mentioned pressing plate approach and squeeze the power switch on the above-mentioned magnetic particle flaw detector to turn the magnetic particle flaw detector on and off.

[0012] Preferably, a sliding groove is provided on a cavity wall of the installation cavity away from the working rod, and the pressing plate is slidably arranged on the sliding groove to move closer to or away from a power switch on the magnetic particle detector;

[0013] The above-mentioned driving member includes two driving ropes, the free ends of the two driving ropes pass through the above-mentioned driving cavity and the installation cavity in sequence and are located in the above-mentioned sliding groove, and are respectively connected to the two side walls opposite to the pressing plate, and multiple reset springs are connected between the above-mentioned pressing plate and the bottom of the above-mentioned sliding groove.

[0014] Preferably, both the upper and lower walls of the installation cavity are provided with wire grooves, and a plurality of rollers are provided in the wire grooves so that the drive rope can move in the wire grooves.

[0015] Preferably, the plurality of rollers are arranged at the inflection points of the wire groove so that the drive rope moves in a vertical or horizontal direction.

[0016] Preferably, the traction mechanism includes a connecting rod and sliding assemblies located at both ends of the connecting rod, and the connecting rod is arranged along the front-back direction;

[0017] Any set of the above sliding assemblies includes a support rod, a traction wheel and an elastic member, the above support rod and the above traction wheel are both two, the two support rods are respectively located on the left and right sides of the end of the above connecting rod, and the above support rod includes an upper support rod and a lower support rod, the upper end of the upper support rod is rotatably provided on the end of the above connecting rod, and the lower end is hinged to the upper end of the above lower support rod;

[0018] The two traction wheels are correspondingly mounted on the two lower support rods, and the elastic member is connected between the two lower support rods and is located above the traction wheels;

[0019] Both ends of the connecting rod and the upper side walls of the front and rear ends of the housing are connected by a traction rope.

[0020] Preferably, the elastic member includes a spring and a waterproof hose, and the waterproof hose is sleeved on the outside of the spring.

[0021] Preferably, the upper side walls of the front and rear ends of the housing are both provided with angle control mechanisms, and the two angle control mechanisms are connected to both ends of the connecting rod via two traction ropes;

[0022] The angle control mechanism includes a slide rail base, a limit plate and two guide assemblies. The two guide assemblies each include a guide wheel and a fixing member. The guide wheel is mounted on the fixing member. The upper end of the fixing member is connected to the connecting rod through a traction rope.

[0023] The above-mentioned slide rail base is arranged on the upper side wall of the above-mentioned shell, and the above-mentioned limit plate is connected to the side wall of the above-mentioned slide rail base close to the above-mentioned guide assembly. The above-mentioned slide rail base is arranged along the left and right directions, and a side wall of the above-mentioned slide rail base arranged along the left and right directions is provided with a guide rail, and the above-mentioned guide rail is located above the above-mentioned limit plate, and the above-mentioned guide wheel is provided with an annular groove, and the above-mentioned guide rail is provided in the above-mentioned annular groove. At least three limit holes are provided on the above-mentioned limit plate in the left and right directions. Before the above-mentioned traction mechanism is pulled, the lower ends of the two above-mentioned fixed columns are correspondingly arranged in the two above-mentioned limit holes.

[0024] Preferably, the fixing member includes an adjusting bolt, the adjusting bolt includes a screw and a nut, the guide wheel is threadedly connected to the screw, and the traction rope is connected to the screw between the guide wheel and the nut;

[0025] By screwing the nut, the lower end of the screw rod moves up and down and is inserted into and pulled out of the limiting hole.

[0026] Preferably, both ends of the connecting rod have extension rods, the diameter of the extension rods is smaller than the diameter of the connecting rod, and the upper end of the upper support rod is rotatably mounted on the extension rods;

[0027] The end of the extension rod is provided with a fastening nut, the fixing piece between the fastening nut and the upper end of the upper support rod is sleeved with a first metal ring, and the end of the traction rope is connected to the first metal ring.

[0028] Preferably, the outer side wall of the lower portion of the working rod is covered with an anti-slip sleeve, and the driving button is located at the anti-slip sleeve.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. The housing is used to load the magnetic particle detector, the working rod is used for the inspector to hold it, and the traction mechanism is located above the housing. The two are connected by a traction rope. During testing, the traction mechanism can be clamped on the surface of the workpiece to be tested. The traction mechanism applies a certain pulling force to the housing through the traction rope, making it easier for the inspector to lift the housing through the working rod, thereby reducing the labor intensity of the inspector during magnetic particle testing.

[0031] 2. The inspector can moderately adjust the contact angle between the yoke probe and the workpiece by controlling the working rod, and then cooperate with the yoke probe itself to rotate a certain angle, making the detection angle adjustment of the yoke probe more flexible and easier to adjust to the direction angle required by the inspector, making it easier for the yoke probe to enter narrow areas to carry out magnetic particle detection work.

[0032] 3. Through the cooperation of the driving device, driving rope, pressing plate and the power switch of the magnetic particle detector, the magnetic particle detector can be started while being lifted, so that the timing of starting the magnetic particle detector is appropriate and it is more convenient for the inspection personnel to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 This is a schematic diagram of the overall device of an embodiment of the present invention;

[0035] Figure 2 This is a schematic diagram of the connection between the magnetic particle detector, housing and working rod in an embodiment of the present invention;

[0036] Figure 3 A cross-sectional view of the housing and the working rod along the front-to-back direction of an embodiment of the present invention;

[0037] Figure 4 A partial cross-sectional view of a housing according to an embodiment of the present invention along the front-to-back direction;

[0038] Figure 5 It is a top cross-sectional view of the housing along the vertical direction of an embodiment of the present invention;

[0039] Figure 6 For the embodiment of the present invention Figure 5 A is an enlarged schematic diagram;

[0040] Figure 7 A schematic diagram of a traction mechanism in an embodiment of the present invention;

[0041] Figure 8 For the embodiment of the present invention Figure 7 A magnified schematic diagram of B in the middle;

[0042] Figure 9 Schematic diagram of the angle adjustment mechanism in an embodiment of the present invention.

[0043] Description of reference numerals:

[0044] 1. Housing; 11. Mounting cavity; 12. Press plate; 13. Sliding groove; 14. Return spring; 15. Wire groove; 16. Roller; 17. Housing body; 18. Housing bottom;

[0045] 2. Working rod; 21. Driving chamber; 22. Anti-slip sleeve;

[0046] 3. Traction mechanism; 31. Connecting rod; 32. Sliding assembly; 321. Support rod; 3211. Upper support rod; 3212. Lower support rod; 322. Traction wheel; 323. Elastic member; 33. Extension rod; 34. First metal collar; 35. Fastening nut;

[0047] 4. Driving device; 41. Driving button; 5. Driving rope; 6. Traction rope;

[0048] 7. Angle control mechanism; 71. Slide rail base; 711. Guide rail; 72. Limit plate; 721. Limit hole; 73. Guide assembly; 731. Guide wheel; 732. Adjusting bolt; 7321. Screw; 7322. Nut; 733. Annular groove; 734. Gasket; 735. Second metal collar; 736. Limiting disc;

[0049] 8. Magnetic particle detector; 81. Magnetic yoke probe; 82. Power switch. DETAILED DESCRIPTION

[0050] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0051] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0052] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0053] like Figures 1-9As shown, the embodiment of the present invention provides a sliding traction, angle-adjustable magnetic particle flaw detector auxiliary device, including a housing 1, a working rod 2 and a traction mechanism 3, the three of which cooperate to complete the auxiliary support of the magnetic particle flaw detector 8; specifically, the housing 1 is used to load the magnetic particle flaw detector 8, and the magnetic particle flaw detector 8 is "concave", so in this embodiment, the housing 1 is set to a concave structure, and correspondingly, the housing 1 has a mounting cavity 11, and the mounting cavity 11 also has a concave structure, which is convenient for the main body of the magnetic particle flaw detector 8 to be placed in the mounting cavity 11, and the magnetic particle flaw detector 8 has two yoke probes 81, and the magnetic particle flaw detector 8 is installed in the mounting cavity 11. The two yoke probes 81 respectively pass through the right cavity wall of the front and rear extensions of the mounting cavity 11 and are located on the outside of the housing 1; specifically, the working rod 2 is tilted, and the upper end of the working rod 2 is connected to the left side wall of the housing 1, and the working rod 2 is used for the inspection personnel to hold; specifically, one end of the traction mechanism 3 is clamped on the outside of the workpiece to be measured, and can It moves along the outer wall of the workpiece, and the other end is connected to the housing 1 by a traction rope 6; when actually in use, it is only necessary to install the magnetic particle detector 8 into the housing 1, and then clamp the outer side of the workpiece to be tested by the traction mechanism 3. The inspector can adjust the contact angle between the yoke probe 81 and the workpiece by controlling the working rod 2, and then perform magnetic particle detection on the corresponding surface of the workpiece. At the same time, after a certain surface of the workpiece is inspected, the traction mechanism 3 is pulled by hand to move the traction mechanism 3 on the outer wall of the workpiece, thereby realizing the movement of the entire auxiliary device, so that the magnetic particle detector 8 moves, and then the surface of the workpiece continues to be inspected. Moreover, because the traction mechanism 3 applies a certain pulling force to the housing 1 through the traction rope 6, it is more labor-saving for the inspector to lift the housing 1 through the working rod 2, reducing the labor intensity during magnetic particle detection, and the traction mechanism 3 can stably move along the surface of the workpiece, thereby stably driving the magnetic particle detector 8 to move along the surface of the workpiece, improving the overall stability of the detection. The above-mentioned front, back, left and right directions are defined in order to more clearly describe the positional relationship between the various technical features. Please refer to the attached Figure 1 , Figure 1 It is a three-dimensional schematic diagram of the entire device, where the working rod 2 is connected to the left side wall of the casing 1, and what can be seen are the front side wall and the horizontal upper side wall of the casing 1.

[0054] Correspondingly, in the present embodiment, the magnetic particle detector 8 is a wireless magnetic particle detector 8, and the yoke probe 81 is rotatably connected to the main body of the magnetic particle detector 8, that is, the yoke probe 81 can rotate in the front and rear directions. Specifically, the rotatable connection can be achieved by a rotating shaft or a bolt, which can enable the yoke probe 81 to rotate within a certain angle range, thereby further adjusting the contact angle with the workpiece, and then cooperating with the inspection personnel to adjust the inclination angle of the entire magnetic particle detector 8 through the working rod 2, and then adjust the detection angle of the yoke probe 81, so that the required detection angle of the yoke probe 81 is easier to adjust to the direction angle required by the inspection personnel, and the yoke probe 81 can be made easier to enter a narrow space area to carry out magnetic particle detection work.

[0055] Specifically, the housing 1 is divided into a housing body 17 and a housing bottom 18. The housing bottom 18 is provided with a buckle plug, and the housing body 17 has a corresponding buckle socket at the bottom, which are symmetrically distributed. Through the use of the buckle plug and the buckle socket, the housing body 17 and the housing bottom 18 are detachable. The magnetic particle flaw detector 8 can be placed into the housing body 17 through the housing bottom 18, and then the housing bottom 18 is installed at the bottom of the housing body 17. In addition, an anti-slip cover 22 is provided on the working rod 2, which the inspector can hold. The starting switch of the drive device 4 is located on the anti-slip cover 22, which is convenient for the inspector to press.

[0056] Further, if Figure 4-Figure 6 As shown, in order to facilitate the opening of the magnetic particle flaw detector 8, after the magnetic particle flaw detector 8 is installed on the installation cavity 11, its power switch 82 faces the left cavity wall of the installation cavity 11. Correspondingly, a pressing plate 12 is provided at the left cavity wall of the installation cavity 11. The pressing plate 12 can slide left and right. Sliding to the right can squeeze the power switch 82 on the magnetic particle flaw detector 8, so that the magnetic particle flaw detector 8 is turned on or off. Correspondingly, a driving device 4 is provided inside the driving cavity 21. The driving shaft of the driving device 4 is connected to the pressing plate 12 by a driving member, so that the pressing plate 12 can be driven close to or away from the power switch 8 on the magnetic particle flaw detector 8 by the driving member. 2, that is, driving the pressing plate 12 to move left and right, and squeezing the power switch 82 on the magnetic particle detector 8 to turn it on and off, and the outer wall of the working rod 2 is provided with a driving button 41 of the driving device 4, and the driving button 41 can directly control the operation of the driving device 4, and then control the pressing plate 12 to press the power switch 82 on the magnetic particle detector 8. Specifically, after the inspection personnel lifts and adjusts the detection angle of the magnetic yoke probe 81, they press the driving button 41 to turn on the driving device 4, and then turn on the magnetic particle detector 8, so that the magnetic yoke probe 81 can be inspected, so that the timing of turning on the magnetic particle detector 8 is appropriate, which is more convenient for the inspection personnel to use.

[0057] Specifically, a sliding groove 13 is provided on the cavity wall of the installation cavity 11 away from the working rod 2. In this embodiment, the sliding groove 13 is provided on the left cavity wall of the installation cavity 11, and the pressing plate 12 is slidably provided on the sliding groove 13 along the left and right directions. When sliding to the right, the pressing plate 12 partially protrudes out of the sliding groove 13 and can squeeze the power switch 82 on the magnetic particle flaw detector 8 located in the installation cavity 11. Correspondingly, the driving member includes two driving ropes 5. Both driving ropes 5 enter the sliding groove 13 along the driving cavity 21 and the installation cavity 11, and are respectively connected to the two opposite side walls of the pressing plate 12. The other two opposite side walls are provided with a protrusion. The two opposite side walls of the sliding groove 13 are provided with a sliding groove provided along the left and right directions, and the protrusion is slidably provided in the sliding groove. , so that the pressing plate 12 can move in the left and right directions, so that the driving device 4 can drive the pressing plate 12 to approach the power switch 82 on the magnetic particle flaw detector 8 through the driving rope 5, and then press the power switch 82. Of course, a plurality of return springs 14 are connected between the pressing plate 12 and the bottom of the sliding groove 13. The return spring 14 is in a stretched state, so that after the driving shaft of the driving device 4 returns to the initial position, the driving rope 5 is in a relaxed state. Under the action of the return spring 14, the pressing plate 12 can return to the initial position, so that the magnetic particle flaw detector 8 is stably turned on, instead of the pressing plate 12 continuously squeezing the power switch 82 of the magnetic particle flaw detector 8, avoiding pressing it again, and causing the magnetic particle flaw detector 8 to turn off.

[0058] Specifically, wire grooves 15 are provided on the inner walls of the upper and lower cavities in the installation cavity 11, and multiple rollers 16 are provided in the wire grooves 15. The multiple rollers 16 are used to standardize the setting route of the drive rope 5, so that the drive rope 5 can move stably in the wire grooves 15 under the drive of the driving device 4, and avoid being arranged outside the wire grooves 15, causing friction with the magnetic particle flaw detector 8 and damaging the magnetic particle flaw detector 8. Specifically, in this embodiment, the wire groove 15 provided on the inner side wall of the upper cavity includes a first wire groove provided vertically on the upper left cavity wall in the installation cavity 11, a second wire groove provided along the left-right direction of the top cavity wall, and a third wire groove provided vertically on the upper right cavity wall, wherein the first wire groove, the second wire groove and the third wire groove are connected, and a roller 16 is installed at the entrance of the first wire groove, the entrance of the second wire groove, the exit of the second wire groove and the exit of the third wire groove, so that the first driving rope 5 can be connected to the hanging ear of the upper side wall of the pressing plate 12 vertically upward, horizontally to the right, vertically downward and horizontally to the right along the multiple rollers 16, thereby standardizing the arrangement and movement path of the driving rope 5. Similarly, the inner side wall of the lower cavity is provided The wire groove 15 includes a fourth wire groove vertically arranged on the lower left cavity wall of the installation cavity 11, a fifth wire groove arranged along the left and right directions of the bottom cavity wall, and a sixth wire groove vertically arranged on the lower right cavity wall, wherein the fourth wire groove, the fifth wire groove and the sixth wire groove are connected, and a roller 16 is installed at the entrance of the fourth wire groove, the entrance of the fifth wire groove, the exit of the fifth wire groove and the exit of the sixth wire groove, so that the second drive rope 5 can be connected to the hanging ear of the lower side wall of the pressing plate 12 vertically downward, horizontally to the right, vertically upward and horizontally to the right along multiple rollers 16, standardizing the arrangement and movement path of the drive rope 5, wherein the front and rear side walls of the pressing plate 12 have protrusions, and the two protrusions are respectively slid in the slide groove. The drive device 4 can be specifically an electric telescopic rod. When the drive rod of the electric telescopic rod is shortened, the drive rope 5 is pulled, forcing the pressing plate 12 to move rightward toward the power switch 82 of the magnetic particle flaw detector 8 and press it. The electric telescopic rod is extended, which relaxes the drive rope 5. The pressing plate 12 slides leftward under the action of the return spring 14, away from the power switch 82 of the magnetic particle flaw detector 8. Specifically, the drive rope 5 and the pulling rope 6 are both made of nylon.

[0059] Specifically, such as Figure 7-Figure 8As shown, the traction mechanism 3 includes a connecting rod 31 and sliding assemblies 32 located at both ends of the connecting rod 31, and the connecting rod 31 is arranged along the front-back direction; specifically, the two sets of sliding assemblies 32 each include a support rod 321, a traction wheel 322 and an elastic member 323. In one set of sliding assemblies 32, there are two support rods 321 and two traction wheels 322, and the two support rods 321 are respectively located on the left and right sides of the connecting rod 31, wherein the support rod 321 includes an upper support rod 3211 and a lower support rod 3212, and the upper end of the upper support rod 3211 is rotatably arranged on the connecting rod The end of the rod 31 is hinged at the lower end with the upper end of the lower support rod 3212, and the two traction wheels 322 are correspondingly rotatably installed on the two lower support rods 3212. The elastic member 323 is connected between the two lower support rods 3212 and is located above the traction wheels 322. Therefore, the four traction wheels 322 in the two sets of sliding assemblies 32 can be stably clamped on the outer wall of the workpiece. The two traction wheels 322 in one sliding assembly 32 are clamped on the front side of the workpiece, and the two traction wheels 322 in the other sliding assembly 32 are clamped on the back side of the workpiece, forming two front and rear The traction wheel 322 is fixed to the workpiece by the spring 323 and the spring 324 is fixed to the workpiece by the spring 325. The traction wheel 322 is fixed to the workpiece by the spring 325. When held on the workpiece to be inspected and moved over an uneven surface, the elastic member 323 experiences different tensile deformations, providing different tensile stresses. Overall, this allows the traction wheel 322 to be more stably clamped to the workpiece, preventing it from easily dislodging. Furthermore, in this embodiment, the inspector applies a diagonally downward driving force via the support rod 321, then pulls the traction mechanism 3 along the outer wall of the workpiece via the traction rope 6. Due to the positional restraint of the upper connecting rod 31, the traction wheel 322 does not disengage from the outer wall of the workpiece and rolls stably along the outer wall. Accordingly, the ends of the connecting rod 31 and the upper sidewalls of the front and rear ends of the housing 1 are connected by the traction rope 6. When the inspector applies a diagonally downward driving force, the front and rear traction ropes 6 simultaneously act on the front and rear ends of the connecting rod 31, causing the front and rear traction wheels 322 to move simultaneously. It is understood that the outer surface of the traction wheel 322 is made of rubber, with anti-slip patterns on the surface to prevent abnormal sliding and reduce wear on the workpiece.

[0060] Specifically, the elastic member 323 includes a spring and a waterproof hose. The waterproof hose is sleeved on the outside of the spring. A layer of flexible waterproof hose is provided on the surface of the spring to prevent the internal spring from being corroded by contact with the splash of the sprayed magnetic suspension, thereby ensuring the service life of the spring.

[0061] Specifically, the upper side walls of the front and rear ends of the housing 1 are provided with angle control mechanisms 7, and the two angle control mechanisms 7 are connected to both ends of the connecting rod 31 through two traction ropes 6. Specifically, Figure 9 As shown, the angle control mechanism 7 includes a slide rail base 71, a limit plate 72 and two guide assemblies 73, and the two guide assemblies 73 each include a guide wheel 731 and a fixing member, wherein the guide wheel 731 is installed on the fixing member, and the upper ends of the fixing members in the two guide assemblies 73 are connected to the connecting rod 31 through a traction rope 6, thereby realizing an angle control mechanism 7 connected to the connecting rod 31 through two traction ropes 6, wherein in the same angle control mechanism 7, the slide rail base 71 is arranged on the upper side wall of the shell 1, the slide rail base 71 is arranged along the left and right directions, and a guide rail 711 is provided on one side wall of the slide rail base 71 arranged along the left and right directions, specifically in this embodiment, it can be the front side wall of the slide rail base 71, and the corresponding two guide wheels 731 are both provided with annular grooves 733, and the guide rail 711 is located in the annular grooves 733, so that the two guide wheels 731 can be connected to the guide rail 711 on the slide rail base 71 through the annular grooves 733. The cooperation realizes sliding in the left and right directions, and in order to achieve the fixation of the entire guide assembly 73 and adjustment of the angle between the two traction ropes 6, the limit plate 72 is installed on the side wall of the slide rail base 71 near the guide wheel 731, and is located below the guide wheel 731. At least three limit holes 721 are provided on the limit plate 72 along the left and right directions, and the lower ends of the fixing posts can be inserted and fixed in the limit holes 721. By adjusting the insertion position of the two fixing posts at the limit holes 721, the angle between the two traction ropes 6 can be adjusted. The larger the angle, the shorter the vertical distance between the shell 1 and the traction mechanism 3, and the smaller the angle, the longer the vertical distance between the shell 1 and the traction mechanism 3. Therefore, the vertical distance between the traction mechanism 3 and the shell 1 can be finally adjusted by adjusting the relative fixed position of the fixing parts in the two guide assemblies 73 on the limit plates, making the lifting more comfortable for the inspection personnel.

[0062] Of course, in this embodiment, the fixing member is set as an adjusting bolt 732, which includes a screw 7321 and a nut 7322. The screw 7321 passes downward through the guide wheel 731 and is threadedly connected to the guide wheel 731. The nut 7322 is located above the guide wheel 731, and the traction rope 6 is connected between the guide wheel 731 and the nut 7322. Since the annular groove 733 of the guide wheel 731 is matched with the guide portion, the guide wheel 731 is limited in the up and down directions, so that the screw 7321 can be moved downward or upward by twisting the nut 7322, so that the lower end of the screw 7321 is inserted into the limiting hole 721 or pulled out from the limiting hole 721. Specifically, when the fixed position of the two adjusting bolts 732 needs to be adjusted, the nuts 7322 are loosened, so that the screw rods 7321 of the adjusting bolts 732 move upward, and the lower ends of the screw rods 7321 are disengaged from the limiting holes 721. Then, the guide wheel 731 can move left and right along the guide rail 711. When it moves to the position where it needs to be fixed, the nuts 7322 are tightened, so that the screw rods 7321 of the adjusting bolts 732 move downward, and the lower ends of the screw rods 7321 enter the corresponding limiting holes 721, thereby limiting the adjustment bolts 732 in the left and right directions, thereby limiting the guide wheel 731 in the left and right directions. Of course, the diameter of the limiting holes 721 is the same as the diameter of the screw rods 7321, which can effectively lock the adjusting bolts 732 and screw rods 7321 to prevent abnormal displacement and ensure the stable connection of the traction rope 6. Specifically, in this embodiment, the cross section of the guide rail 711 is V-shaped, and the cross section of the annular groove 733 of the guide wheel 731 is also V-shaped.

[0063] Specifically, both ends of the connecting rod 31 have an extension rod 33, the diameter of the extension rod 33 is smaller than the diameter of the connecting rod 31, the upper end of the upper support rod 3211 is provided with a rotating hole, the upper end of the upper support rod 3211 is sleeved on the extension rod 33, and can rotate relative to the extension rod 33, the upper end of the fixing piece is provided with a fastening nut 35, and the fixing piece between the fastening nut 35 and the upper end of the upper support rod 3211 is sleeved with a first metal ring 34, the end of the traction rope 6 is connected to the first metal ring 34, by tightening the fastening nut 35, the first metal ring 34 and the upper end of the upper support rod 3211 can be limited to the extension rod 33, of course, each of the first metal rings 34 on the extension rod 33 has two , respectively connected to a traction rope 6; correspondingly, a second metal ring 735 is provided on the screw 7321 between the guide wheel 731 and the nut 7322, and the second metal ring 735 is used to connect the traction rope 6, and the screw 7321 between the guide wheel 731 and the nut 7322 is also sleeved with a limiting disc 736 and a rubber gasket 734. The rubber gasket 734 is located between the second metal ring 735 and the guide wheel 731, which can reduce the loosening of the joint caused by vibration or vibration, increase friction and improve stability, and the limiting disc 736 is located between the second metal ring 735 and the nut 7322, and is used to limit the second metal ring 735 to prevent it from falling off from the nut 7322.

[0064] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A sliding traction, angle-adjustable magnetic particle flaw detector auxiliary device, characterized in that: include: The casing has an installation cavity for installing the main body of the magnetic particle flaw detector, and the magnetic yoke probe of the magnetic particle flaw detector passes through the right cavity wall of the installation cavity and is located outside the casing, and the detection angle of the magnetic yoke probe of the magnetic particle flaw detector is adjustable; A working rod, for the inspection personnel to hold in hand, having a driving cavity therein, and an upper end connected to and in communication with the left side wall of the housing; A traction mechanism, one end of which is clamped on the outside of the workpiece to be tested, and the other end of which is connected to the housing via a traction rope, so that the magnetic yoke probe of the magnetic particle detector on the housing can detect the workpiece along the surface of the workpiece; A pressing plate facing the power switch on the magnetic particle detector is provided in the installation cavity, and the pressing plate can be moved closer to or away from the power switch on the magnetic particle detector; A driving device is provided inside the driving cavity, a driving button of the driving device is provided on the outer wall of the working rod, a pressing plate is provided in the installation cavity, and a driving member is connected to the driving end of the driving device and the pressing plate. The driving device uses the driving member to make the pressing plate approach and squeeze the power switch on the magnetic particle flaw detector to turn the magnetic particle flaw detector on and off.

2. The auxiliary device for magnetic particle flaw detector according to claim 1, characterized in that: A sliding groove is provided on the cavity wall of the installation cavity away from the working rod, and the pressing plate is slidably arranged on the sliding groove to move closer to or away from the power switch on the magnetic particle flaw detector; The driving member includes two driving ropes, the free ends of the two driving ropes pass through the driving cavity and the installation cavity in sequence and are located in the sliding groove, and are respectively connected to the two side walls opposite to the pressing plate, and multiple reset springs are connected between the pressing plate and the bottom of the sliding groove.

3. The auxiliary device for magnetic particle flaw detector according to claim 2, characterized in that: Wire grooves are provided on the upper and lower walls of the installation cavity, and a plurality of rollers are provided in the wire grooves so that the driving rope can move in the wire grooves.

4. The auxiliary device for magnetic particle flaw detector according to claim 3, characterized in that: The plurality of rollers are all arranged at the inflection points of the wire groove so that the driving rope moves in a vertical or horizontal direction.

5. The auxiliary device for magnetic particle flaw detector according to claim 1, characterized in that: The traction mechanism includes a connecting rod and sliding assemblies located at both ends of the connecting rod, and the connecting rod is arranged along the front-back direction; Any group of the sliding assemblies includes a support rod, a traction wheel and an elastic member, and there are two support rods and two traction wheels, and the two support rods are respectively located on the left and right sides of the end of the connecting rod, and the support rods include an upper support rod and a lower support rod, the upper end of the upper support rod is rotatably arranged on the end of the connecting rod, and the lower end is hinged to the upper end of the lower support rod; The two traction wheels are correspondingly mounted on the two lower support rods, and the elastic member is connected between the two lower support rods and is located above the traction wheels; Both ends of the connecting rod and the upper side walls of the front and rear ends of the housing are connected by a traction rope.

6. The auxiliary device for magnetic particle flaw detector according to claim 5, characterized in that: The elastic member includes a spring and a waterproof hose, and the waterproof hose is sleeved on the outside of the spring.

7. The auxiliary device for magnetic particle flaw detector according to claim 5, characterized in that: The upper side walls of the front and rear ends of the housing are both provided with angle control mechanisms, and the two angle control mechanisms are connected to both ends of the connecting rod via two traction ropes; The angle control mechanism includes a slide rail base, a limit plate and two guide assemblies, each of which includes a guide wheel and a fixing member. The guide wheel is mounted on the fixing member, and the upper end of the fixing member is connected to the connecting rod through a traction rope. The slide rail base is arranged on the upper side wall of the sleeve shell, and the limit plate is connected to the side wall of the slide rail base close to the guide assembly. The slide rail base is arranged along the left and right directions, and a side wall of the slide rail base arranged along the left and right directions is provided with a guide rail, and the guide rail is located above the limit plate, and the guide wheel is provided with an annular groove, and the guide rail is provided in the annular groove. At least three limit holes are provided on the limit plate in the left and right directions. Before the traction mechanism is pulled, the lower ends of the two fixed columns are correspondingly arranged in the two limit holes.

8. The auxiliary device for magnetic particle flaw detector according to claim 7, characterized in that: The fixing member includes an adjusting bolt, which includes a screw and a nut. The guide wheel is threadedly connected to the screw, and the traction rope is connected to the screw between the guide wheel and the nut. By screwing the nut, the lower end of the screw rod moves up and down and is inserted into and pulled out of the limiting hole.

9. The auxiliary device for magnetic particle flaw detector according to claim 7, characterized in that: Both ends of the connecting rod are provided with extension rods, the diameter of the extension rods is smaller than the diameter of the connecting rod, and the upper end of the upper support rod is rotatably arranged on the extension rods; A fastening nut is provided at the end of the extension rod, a first metal ring is sleeved on the fixing piece between the fastening nut and the upper end of the upper support rod, and the end of the traction rope is connected to the first metal ring.

10. The auxiliary device for magnetic particle flaw detector according to claim 1, characterized in that: An anti-slip sleeve is provided on the outer side wall of the lower part of the working rod, and the driving button is located on the anti-slip sleeve.

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