Magnetic powder inspection equipment for double-beam brake beam

Abstract

The invention relates to the technical field of brake beam detection, in particular to double-beam brake beam magnetic powder inspection equipment which comprises a workbench, and the bottom of the workbench is fixedly connected with a collecting frame; the top of the workbench is fixedly connected with a top plate, the bottom of the top plate is fixedly connected with a second linear driver, the moving end of the second linear driver is fixedly connected with a third linear driver, the moving end of the third linear driver is fixedly connected with an electric push rod, and the moving end of the electric push rod is fixedly connected with an industrial camera. The second linear driver, the third linear driver and the electric push rod are used for adjusting the X-axis position, the Y-axis position and the Z-axis position of the industrial camera. Through the synergistic effect of the second linear driver, the third linear driver and the electric push rod, accurate positioning of the industrial camera on the X axis, the Y axis and the Z axis is achieved, and it is ensured that the surface of the brake beam is detected; the suction pipes are arranged at different angles, and the magnetic suspension permeates into surface gaps at multiple angles in combination with active rotation of the brake beam.

Description

Technical Field

[0001] The invention relates to the technical field of brake beam detection, in particular to a magnetic particle flaw detection device for a double-beam brake beam. Background Art

[0002] The patent with the publication (announcement) number CN217717606U discloses a magnetic particle flaw detection device for the brake beam of a railway passenger car, including a frame, an electrode clamping mechanism, a lifting mechanism, a rotating mechanism, a spray mechanism, and a yoke coil. The electrode clamping mechanism is provided with two groups, which are symmetrically arranged on the frame. The rotating mechanism drives the two chuck shafts to rotate synchronously. The yoke coil is sleeved on the outer end of the electrode chuck and is coaxially arranged with the electrode chuck. The cross-section of the yoke coil is arranged in an L-shape. The spray mechanism is provided with a linear guide rail and a spray pipe. The spray pipe is arranged at the upper end of the brake beam and parallel to the brake beam. The linear guide rail is fixed at both ends of the frame. The two ends of the spray pipe are slidably arranged in the linear guide rail. The spray pipe is laterally provided with several nozzles. The principle of the flaw detection equipment of the present invention adopts two-way composite magnetization technology. The surface or near-surface cracks of the brake beam can be fully compositely magnetized by a one-time power-on.

[0003] The patent with publication (announcement) number CN219871154U discloses a brake beam magnetic particle flaw detector, which includes a body, an operating table installed on the body, a control module provided on the operating table, a rotating shaft installed on the control module, drive modules provided on both sides of the control module, and a limiting track installed on the operating table close to the drive module; a top frame, the top frame is located on the operating table, and a controller is installed on the top frame, the lower end of the controller is connected to an electric telescopic rod, and a searchlight is installed on the electric telescopic rod; a stabilizing frame, the stabilizing frame is located on the side of the top frame.

[0004] In the above-mentioned prior art, by opening the spray tube, the driving motor and the control module, the workpiece rotates as the control module controls the rotation of the rotating shaft, and the driving motor drives the screw nut on the reciprocating driving screw to move smoothly to complete the limiting, and also drives the spray port on the slider to move evenly. The magnetic powder is applied to the surface of the workpiece more evenly through the smoothly moving spray port, and the processing environment of the workpiece is in an exposed state. When the brake beam is sprayed with magnetic suspension liquid, the magnetic suspension liquid can easily diffuse to the outer end.

[0005] Therefore, a double-beam brake beam magnetic particle inspection device is proposed to solve the above problems. Summary of the Invention

[0006] In response to the shortcomings of the existing technology, the present invention provides a double-beam brake beam magnetic particle inspection equipment, which can realize the precise positioning of the industrial camera in the XYZ three axes through the coordinated action of the second and third linear drives and the electric push rod, and cooperate with the brake beam rotation driven by the servo motor to ensure 360° blind-angle detection of the brake beam surface; the suction tubes are arranged at different angles, combined with the active rotation of the brake beam, so that the magnetic suspension can penetrate the surface gaps at multiple angles, enhancing the ability to capture tiny defects; multiple groups of suction tubes are combined with electromagnetic valves to realize local airflow adjustment, optimize the flow path of the magnetic suspension, and avoid detection blind spots.

[0007] To achieve the above object, the present invention provides the following technical solutions: A double-beam brake beam magnetic particle inspection device comprises a workbench, a collection frame is fixedly connected to the bottom of the workbench; a top plate is fixedly connected to the top of the workbench, a second linear drive is fixedly connected to the bottom of the top plate, a moving end of the second linear drive is fixedly connected to a third linear drive, a moving end of the third linear drive is fixedly connected to an electric push rod, a moving end of the electric push rod is fixedly connected to an industrial camera, and the second linear drive, the third linear drive, and the electric push rod are used to adjust the XYZ axis position of the industrial camera; The side wall of the connecting plate on the workbench is fixedly connected with a limiting component; The limiting assembly includes a connecting seat, and the connecting seat is fixedly connected to the side wall of the connecting plate; A driving motor is bolted to the connecting seat, the output shaft of the driving motor is fixedly connected to the driving gear, the driving gear is meshed with the driven gear, the driven gear is rotatably connected to the connecting seat, the center of the driven gear is fixedly connected to the screw, the screw is rotatably connected to the connecting seat, and the screw is used to drive the two sets of accommodating frames to move in the X-axis direction, so that the two sets of accommodating frames wrap the brake beam inside to avoid overflow of the magnetic suspension liquid during the detection process.

[0008] Preferably, the left and right ends of the workbench are fixedly connected to receiving seats, the side walls of the receiving seats are fixedly connected to first linear actuators, and the output end of the first linear actuator is fixedly connected to the connecting plate; The receiving seat, the first linear drive and the connecting plate are provided in two groups and are symmetrically installed at the left and right ends of the workbench.

[0009] Preferably, a fifth linear drive is bolted to the connecting seat, and the fifth linear drive is fixedly connected to the contact rod. The contact rod slides through the inner center of the screw rod, and the screw rod is hollowed out.

[0010] Preferably, a servo motor is fixedly connected to the contact rod, an output shaft of the servo motor is fixedly connected to a drive shaft, and the drive shaft is rotatably connected to the contact rod.

[0011] Preferably, the screw rod is connected to the threaded sleeve in the accommodating frame through an internal thread, and the side wall at one end of the connecting seat is fixedly connected to the guide rod.

[0012] Preferably, the guide rod is slidably connected to the side wall of the containing frame, and the side wall of the containing frame is embedded with multiple groups of suction tubes at different angles. An electromagnetic valve is provided in the suction tube, and the electromagnetic valve is used to adjust whether the suction tube is connected to the containing frame; the suction tube is connected to an external suction device, and the suction device extracts the air inside the containing frame through the suction tube at different angles and areas, so that the magnetic suspension is extracted and transmitted outward at different angles and passes through the surface of the brake beam, and at the same time controls the drive shaft to drive the brake beam to rotate slightly.

[0013] Preferably, a yoke coil is provided at the bottom of the accommodating frame, the cross section of the yoke coil is arranged in an L-shape, and the yoke coil magnetizes the brake beam longitudinally; A spray pipe is embedded in the top of the receiving frame. The spray pipe is used to connect with an external pipeline for conveying magnetic suspension liquid. The spray head of the spray pipe is located at the upper end of the receiving frame.

[0014] Preferably, a vacuum pump is bolted to the top of the containing frame, the suction end of the vacuum pump is connected to the inside of the containing frame, and the side wall of the containing frame is fixedly connected to a contact assembly; wherein, the vacuum pump extracts the air between the inside of the two groups of containing frames, so that the pressure inside the containing frames is reduced, and the internal and external pressure difference between the containing frames and the brake beam will force the magnetic suspension liquid to accelerate the penetration of the gaps on the surface of the brake beam, and even penetrate into the tiny pores.

[0015] The accommodating component includes a mouth-shaped frame, the mouth-shaped frame is fixedly connected to the accommodating frame, a fourth linear driver is fixedly connected to the surface of the mouth-shaped frame, and an output end of the fourth linear driver is fixedly connected to the pressing plate.

[0016] Preferably, the inner surface of the mouth-shaped frame is fixedly connected to one end surface of the suction bag, the inner surface of the suction bag is provided with multiple groups of water-absorbing fluffs, and the suction bag is fixedly connected to a negative pressure tube.

[0017] Preferably, the negative pressure tube is used to connect to an external suction device. After the air inside the suction bag is sucked into a vacuum, the suction bag as a whole shrinks to fit the surface of the brake beam, so that the suction bag automatically fits the surface of the brake beam according to the shape of the brake beam, and the water-absorbent fluff in the suction bag contacts the surface of the brake beam.

[0018] Compared with the prior art, the present invention provides a double-beam brake beam magnetic particle inspection device, which has the following beneficial effects: 1. The present invention achieves precise positioning of the industrial camera in the X, Y, and Z axes through the coordinated action of the second and third linear drives and the electric push rod. Combined with the rotation of the brake beam driven by the servo motor, it ensures 360-degree detection of the brake beam surface without blind spots. The suction pipes are arranged at different angles. Combined with the active rotation of the brake beam, the magnetic suspension can penetrate surface gaps from multiple angles, enhancing the ability to capture tiny defects. Multiple suction pipes are combined with electromagnetic valves to achieve local airflow regulation, optimize the flow path of the magnetic suspension, and avoid detection blind spots.

[0019] 2. The present invention uses a vacuum pump to extract the air between the two sets of containing frames, thereby reducing the pressure inside the containing frames. The internal and external pressure difference between the containing frames and the brake beams will force the magnetic suspension liquid to penetrate into the surface gaps of the brake beams at an accelerated rate, and even penetrate into tiny pores.

[0020] 3. The present invention is connected to an external suction device through a negative pressure tube. After the air inside the suction bag is sucked into a vacuum, the suction bag shrinks as a whole to fit the surface of the brake beam, so that the suction bag automatically fits the surface of the brake beam according to the shape of the brake beam, and the water-absorbent fluff in the suction bag contacts the surface of the brake beam; the fourth linear drive is controlled to push the pressure plate to press the open end of the suction bag to form an enclosed space. The vacuum-shrinked suction bag adaptively fits according to the shape of the brake beam, and the water-absorbent fluff efficiently absorbs residual liquid to ensure that the surface of the brake beam is dry.

[0021] 4. The present invention wraps the brake beam by closing two sets of containing frames to avoid the brake beam being exposed during spraying. After the containing frames expose the brake beam, the brake beam is in the lower area of the industrial camera, which facilitates the industrial camera to detect the brake beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 The structure of the present invention is schematically shown Figure 1 ; Figure 2 The structure of the present invention is schematically shown Figure 2 ; Figure 3 The structure of the present invention is schematically shown Figure 3 ; Figure 4 Schematic diagram of the top plate connection structure of the present invention; Figure 5 Schematic diagram of the limiting component structure of the present invention Figure 1 ; Figure 6 Schematic diagram of the limiting component structure of the present invention Figure 2 ; Figure 7 Schematic diagram of the limiting component structure of the present invention Figure 3 ; Figure 8 It is a schematic diagram of the screw connection structure of the present invention.

[0023] In the figure: 1. workbench; 2. collection frame; 3. receiving seat; 4. first linear drive; 5. connecting plate; 6. top plate; 7. second linear drive; 8. third linear drive; 9. electric push rod; 10. industrial camera; 11. limiting assembly; 111. connecting seat; 112. driving motor; 113. driving gear; 114. driven gear; 115. screw; 116. fifth linear drive; 117. contact rod; 118. servo motor; 119. driving shaft; 1151. containing frame; 1152. guide rod; 1153. suction pipe; 1154. spray pipe; 1155. vacuum pump; 1156. contact assembly; 11561. mouth frame; 11562. fourth linear drive; 11563. pressure plate; 11564. suction bag; 11565. negative pressure pipe. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figure 1 - Figure 8 , a double-beam brake beam magnetic particle inspection equipment in this embodiment includes a workbench 1, a collection frame 2 is fixedly connected to the bottom of the workbench 1, a PLC controller is provided on the workbench 1, and the PLC controller is electrically connected to the internal electrical components; the left and right ends of the workbench 1 are fixedly connected to a socket 3, and the side wall of the socket 3 is fixedly connected to a first linear drive 4, the first linear drive 4 is used to drive the connecting plate 5 to move, and the connecting plate 5 can also drive the limiting component 11 to move and adjust the position as a whole, and the output end of the first linear drive 4 is fixedly connected to the connecting plate 5; the socket 3, the first linear drive 4, and the connecting plate 5 are provided with two groups, which are symmetrically installed on the left and right ends of the workbench 1, the socket 3, the first linear drive 4, and the connecting plate 5 are used to adjust the movement of the limiting components 11 at the left and right ends; the workbench 1, the socket 3, and the connecting plate 5 are made of Q345B low-alloy high-strength steel, which can withstand the dynamic load of the brake beam and the drive mechanism during the inspection process.

[0026] Further, such as Figures 1-8As shown, a top plate 6 is fixedly connected to the top of the workbench 1, a second linear drive 7 is fixedly connected to the bottom of the top plate 6, a moving end of the second linear drive 7 is fixedly connected to a third linear drive 8, a moving end of the third linear drive 8 is fixedly connected to an electric push rod 9, a moving end of the electric push rod 9 is fixedly connected to an industrial camera 10, and the second linear drive 7, the third linear drive 8, and the electric push rod 9 are used to adjust the XYZ axis position of the industrial camera 10; the industrial camera 10 adopts; SVS-Vistek CXP interface camera: such as SHR and HR series, providing high resolution and high-speed data transmission, suitable for machine vision and high-speed industrial inspection; the industrial camera 10 is connected to the computer USB interface via a USB cable, which is plug-and-play, with a fast transmission speed (up to 5Gbps), and suitable for short-distance transmission.

[0027] The vacuum pump 1155 can be turned on to extract the air between the two sets of containing frames 1151. When the containing frames 1151 between the two sets of limiting components 11 are pressed and contacted with each other, the containing frames 1151 improve the sealing performance of the two sets of containing frames 1151 when in contact through the rubber layer, thereby reducing the pressure inside the containing frames 1151. The pressure difference between the containing frames 1151 and the brake beam will force the magnetic suspension liquid to penetrate into the gaps on the surface of the brake beam at an accelerated rate, and even penetrate into the tiny pores. Subsequently, the control screw 115 drives the accommodating frame 1151 away from the brake beam, so that the accommodating frame 1151 loses its wrapping of the brake beam, and drives the servo motor 118 to drive the driving shaft 119 to rotate, so that the driving shaft 119 drives the brake beam to rotate and adjust the angle. In addition, the second linear drive 7, the third linear drive 8, and the electric push rod 9 can be controlled to drive the industrial camera 10 to move closer to the brake beam, and the surface of the brake beam can be photographed and inspected by the industrial camera 10.

[0028] At the same time, if Figures 1-8 As shown, the side wall of the connecting plate 5 is fixedly connected to the limiting component 11; the limiting component 11 includes a connecting seat 111, which is fixedly connected to the side wall of the connecting plate 5. When the connecting plate 5 moves, it can drive the connecting seat 111 to move as a whole, and the connecting seat 111 is L-shaped; a driving motor 112 is bolted to the connecting seat 111, and the output shaft of the driving motor 112 is fixedly connected to the driving gear 113 for driving the driving gear 113 to rotate, and the driving gear 113 drives the driven gear 114 to rotate, and the driven gear 114 thereby drives the screw 115 to rotate, and the driving gear 113 is meshed with the driven gear 114, and the driven gear 114 is rotatably connected to the connecting seat 111, and the center of the driven gear 114 is fixedly connected to the screw 115, and the screw 115 is rotatably connected to the connecting seat 111; A fifth linear drive 116 is bolted to the connecting seat 111, and the fifth linear drive 116 is fixedly connected to the contact rod 117. The contact rod 117 slides through the inner center of the screw 115, and the screw 115 is hollowed out. A servo motor 118 is fixedly connected to the contact rod 117, and the output shaft of the servo motor 118 is fixedly connected to the drive shaft 119, and the drive shaft 119 is rotatably connected to the contact rod 117; a motor chuck is provided on the drive shaft 119, and the screw 115 is used to drive the two sets of accommodating frames 1151 to move in the X-axis direction, so that the two sets of accommodating frames 1151 wrap the brake beam.

[0029] When inspecting the brake beam, the brake beam is placed between the two sets of limiting assemblies 11 using an external handling tool, and then the fifth linear actuator 116 is controlled to drive the contact rod 117 to move, so that the contact rod 117 drives the drive shaft 119 to contact the left and right ends of the brake beam, thereby fixing the brake beam; Then the driving motor 112 drives the driving gear 113 to rotate, the driving gear 113 drives the driven gear 114 to drive the screw 115 to rotate, and the screw 115 drives the containing frame 1151 to move, so that the two sets of containing frames 1151 wrap the brake beam. Then, the external magnetic suspension is sprayed onto the magnetic suspension liquid inside the containing frame 1151 through the spray pipe 1154, and the suction pipe 1153 is connected to the external suction device. The suction device extracts the air inside the containing frame 1151 through the suction pipe 1153 and at different angles and areas, so that the magnetic suspension is extracted and transmitted outward at different angles and passes through the surface of the brake beam. At the same time, the driving shaft 119 is controlled to drive the brake beam to rotate slightly.

[0030] Further, if Figures 1-8 As shown, the screw 115 is connected to the threaded sleeve in the accommodating frame 1151, which makes it convenient for the screw 115 to drive the accommodating frame 1151 to move and adjust its position. The side wall of one end of the connecting seat 111 is fixedly connected to the guide rod 1152, and the guide rod 1152 is slidably connected to the side wall of the accommodating frame 1151. The side wall of the accommodating frame 1151 is embedded with multiple groups of suction tubes 1153 at different angles. An electromagnetic valve is provided in the suction tube 1153, and the electromagnetic valve is used to adjust whether the suction tube 1153 is connected to the accommodating frame 1151.

[0031] Furthermore, if Figures 1-8As shown, a yoke coil is provided at the bottom of the containing frame 1151, and the cross-section of the yoke coil is arranged in an L-shape. The yoke coil magnetizes the brake beam longitudinally; a spray pipe 1154 is embedded in the top of the containing frame 1151, and the spray pipe 1154 is used to connect to the pipeline for conveying magnetic suspension liquid from the outside, and the spray head of the spray pipe 1154 is located at the upper end of the containing frame 1151; the external magnetic suspension liquid supply pipeline is connected to the spray pipe 1154, and the suction device is connected to the suction pipe 1153 and the negative pressure pipe 11565; a vacuum pump 1155 is bolted to the top of the containing frame 1151, and the suction end of the vacuum pump 1155 is connected to the inside of the containing frame 1151. A contact assembly 1156 is fixedly connected to the side wall of the containing frame 1151; the vacuum pump 1155 adopts the brushless vacuum pump VML series: it is suitable for occasions requiring long-term continuous operation, such as gas circulation and exhaust.

[0032] Finally, if Figures 1-8 As shown, the accommodating component 1156 includes a mouth-shaped frame 11561, which is fixedly connected to the accommodating frame 1151. A rubber layer is provided on the side wall of the accommodating frame 1151. A fourth linear driver 11562 is fixedly connected to the surface of the mouth-shaped frame 11561. The output end of the fourth linear driver 11562 is fixedly connected to the pressing plate 11563. The inside of the mouth-shaped frame 11561 is fixedly connected to the surface of one end of the suction bag 11564. The inner surface of the suction bag 11564 is provided with multiple groups of water-absorbing fluff. A negative pressure tube 11565 is fixedly connected and is used to connect to an external suction device. After the air inside the suction bag 11564 is sucked into a vacuum, the suction bag 11564 shrinks as a whole to fit the surface of the brake beam, so that the suction bag 11564 automatically fits the surface of the brake beam according to the shape of the brake beam, and the water-absorbent fluff in the suction bag 11564 contacts the surface of the brake beam; the fourth linear drive 11562 is controlled to push the pressure plate 11563 to press the open end of the suction bag 11564 to form an enclosed space.

[0033] Among them, the brake beam is placed inside the suction bag 11564, and then the fourth linear driver 11562 is driven to drive the pressure plate 11563 to squeeze one end of the suction bag 11564, so that the suction bag 11564 is in a closed state. The suction device extracts the air inside the suction bag 11564 through the negative pressure tube 11565, so that the suction bag 11564 is deflated as a whole. The water-absorbing fluff in the suction bag 11564 contacts the brake beam, and the water-absorbing fluff can absorb moisture on the surface of the brake beam.

[0034] The installation method, connection method or setting method disclosed in this embodiment are all common mechanical connection methods. Any connection method can be implemented as long as it can achieve its beneficial effects, so the specific structural composition and working principle will not be described in detail in this embodiment.

[0035] 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 the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0036] 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. A double-beam brake beam magnetic particle inspection device, comprising a workbench (1), wherein a collecting frame (2) is fixedly connected to the bottom of the workbench (1); Its characteristics are: The top of the workbench (1) is fixedly connected to a top plate (6), the bottom of the top plate (6) is fixedly connected to a second linear drive (7), the moving end of the second linear drive (7) is fixedly connected to a third linear drive (8), the moving end of the third linear drive (8) is fixedly connected to an electric push rod (9), the moving end of the electric push rod (9) is fixedly connected to an industrial camera (10), and the second linear drive (7), the third linear drive (8), and the electric push rod (9) are used to adjust the XYZ axis position of the industrial camera (10); The side wall of the connecting plate (5) on the workbench (1) is fixedly connected with a limiting component (11); The limiting assembly (11) includes a connecting seat (111), and the connecting seat (111) is fixedly connected to the side wall of the connecting plate (5); A driving motor (112) is bolted to the connecting seat (111), an output shaft of the driving motor (112) is fixedly connected to a driving gear (113), the driving gear (113) is meshed with a driven gear (114), the driven gear (114) is rotationally connected to the connecting seat (111), the center of the driven gear (114) is fixedly connected to a screw rod (115), the screw rod (115) is rotationally connected to the connecting seat (111), and the screw rod (115) is used to drive two groups of accommodating frames (1151) to move in the X-axis direction, so that the two groups of accommodating frames (1151) wrap the brake beam inside to prevent the magnetic suspension liquid from overflowing during the detection process.

2. The double-beam brake beam magnetic particle inspection equipment according to claim 1, characterized in that: The left and right ends of the workbench (1) are fixedly connected to a receiving seat (3), the side wall of the receiving seat (3) is fixedly connected to a first linear drive (4), and the output end of the first linear drive (4) is fixedly connected to the connecting plate (5); The receiving seat (3), the first linear drive (4), and the connecting plate (5) are provided in two groups and are symmetrically mounted on the left and right ends of the workbench (1).

3. The double-beam brake beam magnetic particle inspection equipment according to claim 2, characterized in that: A fifth linear drive (116) is bolted to the connecting seat (111), and the fifth linear drive (116) is fixedly connected to a contact rod (117). The contact rod (117) slides through the inner center of the screw rod (115), and the screw rod (115) is hollowed out.

4. The double-beam brake beam magnetic particle inspection equipment according to claim 3, characterized in that: A servo motor (118) is fixedly connected to the contact rod (117), an output shaft of the servo motor (118) is fixedly connected to a drive shaft (119), and the drive shaft (119) is rotationally connected to the contact rod (117).

5. The double-beam brake beam magnetic particle inspection equipment according to claim 4, characterized in that: The screw rod (115) is connected to the threaded sleeve in the accommodating frame (1151) through an internal thread, and a side wall at one end of the connecting seat (111) is fixedly connected to the guide rod (1152).

6. The double-beam brake beam magnetic particle inspection equipment according to claim 5, characterized in that: The guide rod (1152) is slidably connected to the side wall of the containing frame (1151); the side wall of the containing frame (1151) is embedded with a plurality of suction tubes (1153) at different angles; an electromagnetic valve is provided in the suction tube (1153); the electromagnetic valve is used to adjust whether the suction tube (1153) is connected to the inside of the containing frame (1151); the suction tube (1153) is connected to an external suction device; the suction device extracts air from the inside of the containing frame (1151) through the suction tube (1153) at different angles and areas, so that the magnetic suspension is extracted and transmitted outward at different angles and passes through the surface of the brake beam, while controlling the drive shaft (119) to drive the brake beam to rotate slightly.

7. The double-beam brake beam magnetic particle inspection equipment according to claim 6, characterized in that: A yoke coil is provided at the bottom of the accommodating frame (1151), the cross section of the yoke coil is arranged in an L-shape, and the yoke coil magnetizes the brake beam longitudinally; A spray pipe (1154) is embedded in the top of the containing frame (1151). The spray pipe (1154) is used to connect to an external pipeline for transporting magnetic suspension liquid. The spray head of the spray pipe (1154) is located at the upper end of the containing frame (1151).

8. The double-beam brake beam magnetic particle inspection equipment according to claim 7, characterized in that: The top of the accommodating frame (1151) is bolted to a vacuum pump (1155), a suction end of the vacuum pump (1155) is in communication with the interior of the accommodating frame (1151), and a contact assembly (1156) is fixedly connected to the side wall of the accommodating frame (1151); The contact assembly (1156) includes a mouth-shaped frame (11561), the mouth-shaped frame (11561) is fixedly connected to the accommodating frame (1151), a fourth linear driver (11562) is fixedly connected to the surface of the mouth-shaped frame (11561), and the output end of the fourth linear driver (11562) is fixedly connected to the pressure plate (11563).

9. The double-beam brake beam magnetic particle inspection equipment according to claim 8, characterized in that: The mouth-shaped frame (11561) is fixedly connected to the surface of one end of the suction bag (11564), and the inner surface of the suction bag (11564) is provided with multiple groups of water-absorbing fluffs. The suction bag (11564) is fixedly connected to a negative pressure tube (11565).

10. The double-beam brake beam magnetic particle inspection equipment according to claim 9, characterized in that: The negative pressure tube (11565) is used to connect to an external suction device. After the air inside the suction bag (11564) is sucked into a vacuum, the suction bag (11564) shrinks as a whole to fit the surface of the brake beam, so that the suction bag (11564) automatically fits the surface of the brake beam according to the shape of the brake beam, and the water-absorbing fluff in the suction bag (11564) contacts the surface of the brake beam.

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