CN217605740U

CN217605740U - Brake disc magnetic particle flaw detector

Info

Publication number: CN217605740U
Application number: CN202221596376.XU
Authority: CN
Inventors: 门靖开; 王新华; 岑巳隆; 史陇平; 孙高鹏; 汪鹏
Original assignee: Xi'an Yong'an Magnetic Particle Testing Technology Co ltd
Current assignee: Xi'an Yong'an Magnetic Particle Testing Technology Co ltd
Priority date: 2022-06-24
Filing date: 2022-06-24
Publication date: 2022-10-18
Anticipated expiration: 2032-06-24

Abstract

The utility model relates to a brake disc magnetic particle flaw detector, which comprises a feeding trolley, a feeding level, a magnetizing device, a magnetizing level, a bed type machine body and an observing level, wherein the feeding trolley is communicated with three stations on the bed type machine body and can reciprocate among the three stations; the magnetization position of the bed-type machine body is provided with a magnetization device. The utility model adopts a bed structure, the equipment structure is simple, and the upper and lower workpieces are convenient. The utility model discloses a circumference center conductor and vertical electromagnetic induction's compound magnetization detection device guarantees that the brake disc detects a flaw the position and any ascending defect in orientation can both obtain higher sensitivity of detecting a flaw, and the whole fluorescence magnetic particle inspection of brake disc detects in the magnetization completion, the utility model discloses a non-contact magnetic particle inspection device detects reliably stably, guarantees brake disc magnetic particle inspection's effect, accomplishes the transport and the gyration of work piece automatically when detecting a flaw, very big reduction measurement personnel intensity of labour.

Description

Brake disc magnetic particle flaw detector

Technical Field

The utility model relates to a brake disc magnetic particle inspection detection device in nondestructive test field, the device are applicable to harmonious electric locomotive brake disc fluorescence magnetic particle inspection operation.

Background

The magnetic particle inspection is a means for carrying out nondestructive detection on the surface and the near surface of a ferromagnetic material workpiece in industrial nondestructive detection, and the magnetic particle inspection is a method for detecting defects on the surface of the ferromagnetic material workpiece by utilizing a magnetic phenomenon. Magnetic powder (such as magnetic suspension) with certain viscosity and magnetic conductivity is sprayed on the surface of a test piece, after the test piece is magnetized, magnetic poles on two sides of a defect adsorb the magnetic powder, the magnetic powder is accumulated to form a magnetic mark, and the appearance of the magnetic mark displays a series of contour images such as the length and the trend of the defect, so that the purpose of flaw detection is achieved.

The brake disc of the harmonious electric locomotive is an annular steel casting and is provided with radial cooling ribs, and the brake disc has a braking effect by friction with the brake pad. The brake disc is a component for carrying out nondestructive testing for the key point in manufacturing and overhauling the harmonious electric locomotive, and in order to ensure the safety of the harmonious electric locomotive in high-speed operation, the brake disc must carry out surface wet-process fluorescent magnetic powder inspection in the manufacturing and overhauling processes.

At present, magnetic powder detection of brake discs of harmonious electric locomotives mostly adopts a portable magnet yoke flaw detector to carry out magnetic powder flaw detection to detect surface defects, the detection mode aims at solving the problems of small detection range, easy omission, low detection efficiency and the like of the brake discs with complex structural shapes, personnel need to turn the brake discs to detect the flaw of each detection surface of a workpiece during flaw detection, the labor intensity of the detection personnel is increased, the production cost, the production field and the personnel increase are caused, the detection quality of the brake discs is seriously influenced by the conditions, and the safety of the vehicles during high-speed operation is also influenced.

Disclosure of Invention

The utility model provides a compound magnetization magnetic particle flaw detector, the device are applicable to harmonious electric locomotive brake disc wet process fluorescence magnetic particle flaw detection operation.

The technical solution of the utility model is that: a brake disc magnetic particle flaw detector comprises a feeding trolley, a feeding position, a darkroom, a magnetizer, a magnetization position, a bed type machine body, a control cabinet and an observation position, wherein the bed type machine body is provided with three stations of the feeding position, the magnetization position and the observation position; the bed type machine body is provided with a feeding trolley which is communicated with three stations on the bed type machine body and can move back and forth among the three stations; a magnetizing device is arranged at the magnetizing position of the bed type machine body; a control cabinet is arranged outside the bed type machine body; the outer side of the whole machine is provided with a darkroom.

The feeding trolley comprises a trolley body, a walking device and a workpiece supporting and rotating device, wherein the walking device comprises a rotating shaft, a chain wheel A, a walking wheel A, a chain A, a speed reducer A, a chain wheel B and a walking wheel B; the workpiece supporting and rotating device comprises a roller A, a side plate, a supporting roller, a support, a roller B, a chain wheel C, a speed reducer B, a chain wheel D, a transmission shaft and a wheel seat; be equipped with curb plate and wheel seat on the automobile body, be equipped with gyro wheel A and gyro wheel B on the wheel seat, be equipped with the support on the curb plate, be equipped with the support gyro wheel on the support, on gyro wheel A and gyro wheel B were placed to the brake disc, the bottom sprag brake disc, on the support gyro wheel was placed to the brake disc top, the brake disc was supported at the top, speed reducer B passes through sprocket C and chain B and connects sprocket D, is equipped with the transmission shaft on the sprocket D, is equipped with gyro wheel B on the transmission shaft.

The magnetizing device comprises a sliding table, a cylinder A, a mounting seat, a support A, a central conductor A, a movable iron core, a pull rod, a pull plate, a push plate, a cylinder B, a coil winding, a central conductor B, a fixed iron core, a support B and a fixed seat; the mounting seat is provided with a cylinder A, a piston rod of the cylinder A is connected with the sliding table, and the sliding table is provided with a support A, a central conductor A and a movable iron core; the fixed iron core is provided with a coil winding; the cylinder B is fixed on the fixing seat, a piston rod of the cylinder B is connected with the push plate, one end of the pull rod is connected with the push plate, and the other end of the pull rod is connected with the pull plate.

The utility model adopts a bed structure, the equipment structure is simple, and the upper and lower workpieces are convenient.

The utility model discloses to the defect that exists in the current harmonious electric locomotive brake disc magnetic particle inspection technique of railway and not enough, adopt circumference center conductor and vertical electromagnetic induction's compound magnetization detection device, guarantee that the brake disc detects a flaw any ascending defect in orientation in position and can both obtain higher flaw detection sensitivity, the whole fluorescence magnetic particle inspection of brake disc is accomplished in magnetization once, it is little effectively to solve traditional inspection equipment detection range, leak easily and examine, detection efficiency is low.

The utility model discloses a non-contact magnetic particle inspection device, the during operation magnetization unit of detecting a flaw not with the work piece contact, the magnetization effect is not influenced by the contact condition, detect reliably stably, guarantee brake disc magnetic particle inspection's effect, electrode and work piece contact probably cause the danger of the work piece of burning of striking sparks to being detected the work piece when avoiding traditional magnetization to the spare circular telegram, operation safety.

The utility model discloses be furnished with the pay-off dolly, the work piece is installed to the pay-off dolly and is supported slewer, accomplishes the transport and the gyration of work piece automatically when detecting a flaw, need not personnel and turns the brake disc and detect a flaw work piece and respectively detect the surface, very big reduction measurement personnel intensity of labour.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic structural view of the feeding trolley of the utility model.

Fig. 3 is a schematic view of the structure of the magnetizing device of the present invention.

Detailed Description

The whole machine of the utility model adopts a bed type structure design, and the machine body plays a role in supporting and fixing all components of the flaw detector; the brake disc is conveyed by a rail-type trolley, so that the functions of placing, conveying and rotating the brake disc are realized; a magnetizing device of a composite magnetic field is formed by adopting a circumferential central conductor method and a longitudinal induction method, and the brake disc is wholly magnetized in all directions; a steel-structure darkroom is adopted to ensure that the white light illumination of the observation position meets the standard; an electrical control system with a PLC as a core is adopted to realize the automatic control work of magnetic powder inspection.

The utility model relates to a brake disc magnetic particle flaw detector includes: the device comprises a movable door 1, a feeding trolley 2, a feeding level 3, a darkroom 4, a magnetizing device 5, a magnetizing level 6, a bed-type machine body 7, a control cabinet 8, a brake disc 9, an observation level 10 and the like. The bed-type machine body 7 is provided with three stations of a material loading position 3, a magnetization position 6 and an observation position 10; the bed type machine body 7 is provided with the feeding trolley 2, the feeding trolley 2 has two functions of walking and rotary support, and the feeding trolley 2 is communicated with three stations on the bed type machine body 7 and can move back and forth among the three stations; the magnetizing device 5 is arranged at a magnetizing station 6 of the bed type machine body 7; the control cabinet 8 is placed outside the bed-type machine body 7; the darkroom 4 is arranged at the outer side of the whole machine.

The feeding trolley 2 comprises a trolley body 11, a walking device and a workpiece supporting and rotating device, wherein the walking device comprises a rotating shaft 12, a chain wheel A13, a roller A14, a walking wheel A15, a chain A16, a speed reducer A17, a mounting seat 18, a chain wheel B19 and a walking wheel B31, the speed reducer A17 is connected with the chain wheel A13 through the chain wheel B19 and the chain A16, the rotating shaft 12 is arranged on the chain wheel A13, the walking wheel A15 is arranged on the rotating shaft 12, and the walking wheel B31 is arranged on the trolley body 11; the feeding trolley 2 has two functions of walking, workpiece positioning and supporting and rotating. The walking function is realized: the chain wheel B19 is driven by the speed reducer A17 fixed on the mounting seat 18 through the chain A16 to drive the chain wheel A13, the rotating shaft 12 and the travelling wheel A15 to rotate together, and the whole feeding trolley 2 is driven to travel by the friction force between the travelling wheel A15 and the guide rail. The workpiece supporting and rotating device comprises a roller A14, a side plate 20, a supporting roller 21, a support 22, a roller B23, a chain wheel C24, a speed reducer B25, a chain B26, a chain wheel D27, a transmission shaft 28 and a wheel seat 30; be equipped with curb plate 20 and wheel seat 30 on the automobile body 11, be equipped with gyro wheel A14 and gyro wheel B23 on the wheel seat 30, be equipped with support 22 on the curb plate 20, be equipped with support roller 21 on the support 22, brake disc 9 places on gyro wheel A14 and gyro wheel B23, bottom sprag brake disc 9, brake disc 9 top is placed on support roller 21, top sprag brake disc 9, speed reducer B25 passes through sprocket C24 and chain B26 and connects sprocket D27, be equipped with transmission shaft 28 on the sprocket D27, be equipped with gyro wheel B23 on the transmission shaft 28. The workpiece positioning and supporting functions are realized: the brake disc 9 is placed on the roller A14 and the roller B23, and the top of the brake disc 9 is leaned on the roller 21, so that the positioning and the supporting of the brake disc are completed. The rotation function of the brake disc is realized: the speed reducer B25 drives the chain wheel C24 to transmit power to the chain wheel D27 through the chain B26, the chain wheel D27 drives the transmission shaft 28 and the roller B23 to rotate, and the roller B25 drives the brake disc to rotate through friction force between the roller B25 and the brake disc 9, so that the rotating function of the brake disc is realized.

The magnetization of the brake disc adopts a magnetization mode combining a circumferential central conductor method and a longitudinal electromagnetic induction method. The magnetization of the circumferential central conductor is to penetrate the conductor into a hole of a hollow workpiece and place the conductor in the center of the hole, and current passes through the conductor to form a circumferential magnetic field; the longitudinal induced current magnetization is to insert an iron core into an annular workpiece, use the annular workpiece as a secondary winding of a transformer, and enable an alternating magnetic field to generate induced circumferential current on the workpiece through the change of magnetic flux in the iron core to form a longitudinal magnetic field.

The magnetizing device 5 is composed of a sliding table 33, a cylinder A34, an installation seat 35, a support A36, a central conductor A37, a movable iron core 38, a pull rod 39, a pull plate 40, a push plate 41, a cylinder B42, a central conductor B43, a coil winding 44, a fixed iron core 45, a support B46 and a fixed seat 47. The mounting seat 35 is provided with a cylinder A34, a piston rod of the cylinder A34 is connected with the sliding table 33, and the sliding table 33 is provided with a support A36, a central conductor A37 and a movable iron core 38; a fixed iron core 45, a central conductor B43 and a support B46 are arranged on the fixed seat 37, and a coil winding 44 is arranged on the fixed iron core 45; the cylinder B42 is fixed on the fixed seat 37, a piston rod of the cylinder B42 is connected with the push plate 41, one end of the pull rod 39 is connected with the push plate 41, and the other end of the pull rod is connected with the pull plate 40. The magnetizing function of the magnetizing device 5 is realized: the feeding trolley 2 with the brake disc 9 travels to the magnetization station 6 of the bed type machine body 4 and stops, a piston rod of a cylinder A34 fixed on a mounting seat 37 retracts to drive the sliding table 33, a support A36, a central conductor A37 and a movable iron core 38 which are installed on the sliding table 33 to move together to the right end, a fixed iron core 45 and a central conductor B43, which are installed on a fixed seat 47, of the movable iron core 38 and the central conductor A37 are tightly attached, a push plate 41 is driven by a cylinder B42 installed on the fixed seat 47 to drive a pull rod 39 and a pull plate 40 to press downwards, contacts of the central conductor A37 and the central conductor B43 are further attached, and the effective contact area of the conductors is ensured. Alternating current is supplied to the central conductor A37 and the central conductor 43B to circumferentially magnetize the brake disc 9, alternating current is supplied to the coil winding 44 mounted on the fixed iron core 45, an alternating magnetic field is generated inside the induction iron core composed of the movable iron core 38 and the fixed iron core 45, circumferential induced current is generated on the surface of the brake disc 9, a longitudinal magnetic field is generated, and the brake disc 9 is integrally magnetized under the action of the composite magnetic field. After the magnetization operation, the air cylinder B42 is reset, the driving push plate 41 drives the pull rod 39 and the pull plate 40 to separate the central conductor A37 from the central conductor B43, the piston rod of the air cylinder A34 extends out to drive the sliding table 33, the support A36 installed on the sliding table 33, the central conductor A37 and the movable iron core 38 to move together to the left end, and then the feeding trolley 2 loaded with the brake disc 9 can walk to the next station, so that the magnetization operation of the brake disc 9 is finished.

The electric control system is composed of a control cabinet, a PLC, a control button, a sensor, a relay, a display instrument, a magnetizing transformer, a silicon controlled voltage regulating module and other execution elements, and completes automatic control work of workpiece conveying, rotating, spraying, magnetizing and other processes.

The working process is as follows:

a movable door 1 of a darkroom 4 is opened, a feeding trolley 2 moves to a bed type machine body 7 to feed a material level 3, a brake disc 9 is manually placed on a roller A14, a roller B23 and a supporting roller 21 of the feeding trolley 2, a speed reducer A17 is started to drive a traveling wheel A15 to rotate, the brake disc 9 and the feeding trolley 2 move to a magnetization position 6 of the bed type machine body 7, and the speed reducer A17 stops. The cylinder A34 is started to drive the central conductor A37 and the movable iron core 38 on the sliding table 33 in the magnetizer 3 to pass through the inner ring of the brake disc 9 and tightly push against the fixed iron core 45 and the central conductor B43 on the fixed seat 47 in the magnetizer 3 to stop, at the moment, the inner ring of the brake disc 9 is positioned at the center of the whole magnetizer 3, the cylinder B42 is started, the driving push plate 41 drives the pull rod 39 and the pull plate 40 to press down, so that the central conductor A37 and the central conductor B43 are in contact and contact with each other to be pressed tightly, at the moment, the spray pump is started to spray magnetic suspension onto the surface of the brake disc 9, the speed reducer B25 is started at the same time, the driving sprocket C24 transmits power to the sprocket D27 through the chain B26, the sprocket D27 drives the transmission shaft 28 and the roller B23 to rotate, the roller B23 drives the brake disc 9 to rotate through friction force between the brake disc 9, the transformer supplies power to introduce magnetization current into the central conductor A37 and the central conductor B43, a circumferential magnetic field is generated around the central conductor, alternating current is introduced into the coil winding group 44, a circumferential magnetic field is generated inside the induction iron core 38 and the fixed iron core 45, the brake disc 9 simultaneously forms a circumferential magnetic field, a circumferential magnetic field is formed, the longitudinal magnetic field is superposed on the surface of the brake disc 9, and the brake disc rotates, and a composite magnetic field is detected, and the brake disc 9 rotates, and any one circle of the composite magnetic field is detected. The cylinder B42 is reset, the driving push plate 41 drives the pull rod 39 and the pull plate 40 to ascend, so that the contact point between the central conductor A37 and the central conductor B43 is released, the cylinder A34 is reset, the central conductor A37 and the movable iron core 38 on the middle sliding table 33 of the magnetizer 3 are driven to retreat from the inner ring of the brake disc 9, the sliding table 33 moves backwards to the rear limit position and stops, the speed reducer A17 is started, the driving walking wheel A15 rotates, the feeding trolley 2 with the brake disc 9 moves to the observation position 10 of the bed type machine body 7 along the guide rail and stops, the movable door 1 is closed, the speed reducer B25 is started, the driving roller B23 rotates to drive the brake disc 9 to rotate, the detector holds the ultraviolet lamp to observe the magnetic marks on the surface of the brake disc 9, after observation is finished, the speed reducer B25 is powered off, the brake disc 9 stops rotating, the movable door 1 is opened, the speed reducer A17 is started, the driving walking wheel A15 rotates, the feeding trolley 2 with the brake disc 9 with the detected material level moves to the bed type machine body 7 along the guide rail and stops, the brake disc 9 is lifted manually, and the whole operation is finished.

The utility model discloses a PLC program controller automated design, after the material loading, a key operation alright accomplish magnetic particle inspection's whole process, improved degree of automation and reduced the production and leaked the human factor of examining, conveniently detect a flaw the operation, improve reliability and production efficiency of detecting a flaw, reduce operating personnel, practice thrift the cost of production.

The utility model discloses an electric power compensation technique, under the prerequisite that does not reduce detectivity, magnetizing power can reduce thirty percent.

The utility model discloses have magnetizing current regulatory function, magnetizing current is controlled by silicon controlled rectifier voltage regulating module, and the electric current size can be adjusted at any time according to the needs that detect.

Claims

1. The utility model provides a brake disc magnetic particle flaw detector, includes pay-off dolly (2), material loading level (3), darkroom (4), magnetization unit (5), magnetization position (6), bed formula fuselage (7), switch board (8) and observe position (10), its characterized in that: the bed-type machine body (7) is provided with three stations of a material loading position (3), a magnetization position (6) and an observation position (10); the bed type machine body (7) is provided with a feeding trolley (2), and the feeding trolley (2) is communicated with three stations on the bed type machine body (7) and can reciprocate among the three stations; a magnetizing device (5) is arranged at the magnetizing position (6) of the bed type machine body (7); a control cabinet (8) is arranged on the outer side of the bed type machine body (7); a darkroom (4) is arranged at the outer side of the whole machine.

2. A brake disc magnetic particle flaw detector according to claim 1, characterized in that: the feeding trolley (2) comprises a trolley body (11), a traveling device and a workpiece supporting and rotating device, wherein the traveling device comprises a rotating shaft (12), a chain wheel A (13), a traveling wheel A (15), a chain A (16), a speed reducer A (17), a chain wheel B (19) and a traveling wheel B (31), the speed reducer A (17) is connected with the chain wheel A (13) through the chain wheel B (19) and the chain A (16), the rotating shaft (12) is arranged on the chain wheel A (13), the traveling wheel A (15) is arranged on the rotating shaft (12), and the traveling wheel B (31) is arranged on the trolley body (11); the workpiece supporting and rotating device comprises a roller A (14), a side plate (20), a supporting roller (21), a support (22), a roller B (23), a chain wheel C (24), a speed reducer B (25), a chain B (26), a chain wheel D (27), a transmission shaft (28) and a wheel seat (30); be equipped with curb plate (20) and wheel seat (30) on automobile body (11), be equipped with gyro wheel A (14) and gyro wheel B (23) on wheel seat (30), be equipped with support (22) on curb plate (20), be equipped with on support (22) and support gyro wheel (21), gyro wheel A (14) and gyro wheel B (23) are placed on brake disc (9), bottom sprag brake disc (9), support gyro wheel (21) are placed on brake disc (9) top, top sprag brake disc (9), sprocket D (27) is connected through sprocket C (24) and chain B (26) in speed reducer B (25), be equipped with transmission shaft (28) on sprocket D (27), be equipped with gyro wheel B (23) on transmission shaft (28).

3. A brake disc magnetic particle flaw detector according to claim 1, characterized in that: the magnetizing device (5) comprises a sliding table (33), a cylinder A (34), a mounting seat (35), a support A (36), a central conductor A (37), a movable iron core (38), a pull rod (39), a pull plate (40), a push plate (41), a cylinder B (42), a coil winding (44), a central conductor B (43), a fixed iron core (45), a support B (46) and a fixed seat (47); a cylinder A (34) is arranged on the mounting seat (35), a piston rod of the cylinder A (34) is connected with the sliding table (33), and a support A (36), a central conductor A (37) and a movable iron core (38) are arranged on the sliding table (33); a fixed iron core (45), a central conductor B (43) and a support B (46) are arranged on the fixed seat (47), and a coil winding (44) is arranged on the fixed iron core (45); the cylinder B (42) is fixed on the fixed seat (47), a piston rod of the cylinder B (42) is connected with the push plate (41), one end of the pull rod (39) is connected with the push plate (41), and the other end of the pull rod is connected with the pull plate (40).