CN215910401U - Portable ultrasonic flaw detection device for axle end of railway axle - Google Patents
Portable ultrasonic flaw detection device for axle end of railway axle Download PDFInfo
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- CN215910401U CN215910401U CN202121785558.7U CN202121785558U CN215910401U CN 215910401 U CN215910401 U CN 215910401U CN 202121785558 U CN202121785558 U CN 202121785558U CN 215910401 U CN215910401 U CN 215910401U
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Abstract
The utility model discloses a portable ultrasonic flaw detection device for a railway axle end, which comprises a shell. The H-shaped slip ring fixing body is rotatably arranged in the shell through a front bearing and a rear bearing. The front end of the slip ring fixing body is fixed with a probe disc, the center of the probe disc is provided with a center positioning cone forward, and the probe disc is provided with a plurality of ultrasonic probes with different angles around the center positioning cone. And a gear ring is fixed at the rear end of the slip ring fixing body, the gear ring is meshed with a gear, and the gear is connected with a direct current servo motor. The middle part of the slip ring fixing body is penetrated and provided with the conductive slip ring, the forward rotating part of the conductive slip ring is connected with the ultrasonic probe, and the backward fixing part of the conductive slip ring is connected with the industrial personal computer. An electromagnet disc embedded with a plurality of electromagnets is fixed at the front end of the shell. The rear end of the shell is provided with a motor cover. The shell lateral wall is installed and is handed the handle, and the electro-magnet is connected with power supply unit through the last switch of handing the handle. The ultrasonic nondestructive flaw detection device can be stably positioned at the axle end of an axle to carry out ultrasonic nondestructive flaw detection, and is convenient, rapid and convenient to carry.
Description
Technical Field
The utility model relates to an axle defect ultrasonic detection device, in particular to a portable railway axle end ultrasonic flaw detection device.
Background
When CRH series motor train units, various locomotives, passenger cars and subways are overhauled in factories or in sections, the central axles of the CRH series motor train units, the various locomotives, the passenger cars and the subways are generally subjected to conventional ultrasonic flaw detection by adopting automatic flaw detection equipment and assisting a manual retest mode, wherein the conventional ultrasonic flaw detection is carried out on the axle bodies, the shaft necks and the axle ends of the axles, which face the wheel seat embedding parts, the gear seat or brake disc embedding parts, the large cracks of the axle bodies, the sound transmission performance of the axles and the like. At present, a single crystal probe is adopted in conventional ultrasonic flaw detection, for example, when a solid axle of a passenger car wheel is detected, the single crystal probe is adopted to scan a crack defect at an embedding part of a brake disc seat from an axle body, scan a crack defect at an embedding part of a wheel seat from an axle neck, and scan an R arc part, a large crack of the axle body and the sound transmission performance of the axle from an axle end. In actual detection, it can be found that when flaw detection is performed by using a single crystal probe, a plurality of scanning positions need to be arranged along the axis direction of an axle, and probes at different angles are used for mobile scanning so as to cover the whole detected area. However, in order to shorten the period of factory and section, the wheel set and the wheel axle need to be detected in a non-disassembled state, so that the only detection method is to detect at the axle end, that is, the bearing cover at the axle end is opened to expose the axle end (axle end face) so as to detect from both axle ends of the axle. However, no equipment capable of being positioned at the axle end of the axle for ultrasonic flaw detection exists in the industry at present.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a portable ultrasonic flaw detection device for a railway axle end, which can be stably positioned at the axle end of an axle for ultrasonic nondestructive flaw detection, is convenient and quick to detect, is convenient to move and carry, and is suitable for popularization.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a portable railway axletree axle head ultrasonic inspection detection device which characterized in that: it includes the open shell in both ends, wherein: the slip ring fixing body with the H-shaped section is rotatably arranged in the shell through a front bearing and a rear bearing; a probe disc is fixedly installed at the front end of the slip ring fixing body, a central positioning cone is installed forwards at the center of the probe disc, and a plurality of ultrasonic probes with different angles are installed on the probe disc around the central positioning cone; a gear ring is fixedly installed at the rear end of the slip ring fixing body, the gear ring is meshed with a gear, the gear is connected with an output shaft of a direct current servo motor through a speed reducer, and the direct current servo motor with a coder is connected with an external industrial personal computer; the middle part of the slip ring fixing body is provided with a conductive slip ring in a penetrating way, the rotor incoming line of the forward rotating part of the conductive slip ring is electrically connected with the ultrasonic probe, and the stator outgoing line of the backward fixing part of the conductive slip ring is connected with the industrial personal computer; an electromagnet disc is fixedly installed at the front end of the shell, the electromagnet disc is arranged around the periphery of the probe disc, and a plurality of electromagnets are embedded on the electromagnet disc; the rear end of the shell is provided with a cylindrical motor cover, the rear end of the motor cover is provided with a rear end cover, and the rear end cover is provided with a wire outlet hole; the hand-held handle is installed to the shell lateral wall, and the electro-magnet is through handheld power switch on hand and outside power equipment electric connection, industrial computer, speed reducer and direct current servo motor and power equipment electric connection.
The utility model has the advantages that:
the ultrasonic flaw detection device has the advantages of reasonable and compact structural design, small volume, convenient and quick handheld positioning and high detection speed, can be stably positioned at the shaft end of the solid axle for ultrasonic flaw detection, is convenient to move and carry, and can be well used for ultrasonic nondestructive flaw detection of railway axles on the basis of meeting the requirements of iron standards and iron general wheel gauges.
Drawings
FIG. 1 is a schematic structural diagram of a portable ultrasonic flaw detection device for a railway axle end of the utility model.
Fig. 2 is a schematic sectional view taken along the a-a cut line of fig. 1.
FIG. 3 is a schematic view of the installation structure of the centering cone.
Fig. 4 is a schematic view of the rear end cap.
FIG. 5 is an explanatory view of the portable ultrasonic flaw detection device for a railway axle end according to the present invention.
Fig. 6 is an explanatory view of the position of the ultrasonic probe on the axle when the portable ultrasonic flaw detection device for the axle end of the railway axle of the present invention performs ultrasonic flaw detection.
Fig. 7 is a schematic view of the mounting structure of the ultrasonic probe.
Fig. 8 is an angle explanatory diagram of an ultrasonic beam emitted by the ultrasonic probe.
Detailed Description
As shown in fig. 1 to 8, the portable ultrasonic flaw detection device 500 for railway axle ends of the present invention includes a housing 300 with two open ends, the housing 300 is, for example, designed in a cylindrical shape (without limitation), wherein: the slip ring fixing body 60 of H-shaped section is rotatably installed in the housing 300 through a front bearing 81 and a rear bearing 82; a probe disc 20 is fixedly installed at the front end of the slip ring fixing body 60, a central positioning cone 10 is installed forward from the center of the probe disc 20, and a plurality of ultrasonic probes 30 with different angles are installed on the probe disc 20 around the central positioning cone 10; a gear ring 90 is fixedly mounted at the rear end of the slip ring fixing body 60, the gear ring 90 is meshed with a gear 100, the gear 100 is connected with an output shaft of a direct current servo motor 140 through a speed reducer 130, the direct current servo motor 140 with an encoder is connected with an external industrial personal computer (not shown) through a signal cable (not shown), for example, the direct current servo motor 140 is a 24V direct current servo motor with an encoder; a conductive slip ring 70 is installed in the middle of the slip ring fixing body 60 in a penetrating manner, a rotor incoming line 73 of a forward rotating part 71 of the conductive slip ring 70 is electrically connected with the ultrasonic probe 30, and a stator outgoing line 74 of a backward fixing part 72 of the conductive slip ring 70 is connected with an industrial personal computer through an output cable (not shown in the figure); an electromagnet disc 40 is fixedly installed at the front end of the shell 300, the electromagnet disc 40 is arranged around the periphery of the probe disc 20, and a plurality of electromagnets 50 are embedded on the electromagnet disc 40; the rear end of the housing 300 is provided with a cylindrical motor cover 120, the rear end of the motor cover 120 is provided with a rear end cover 150, the motor cover 120 and the rear end cover 150 cover the direct current servo motor 140, and the rear end cover 150 is provided with a wire outlet hole 151; the handheld handle 180 is installed on the side wall of the housing 300, the electromagnet 50 is electrically connected with an external power supply device (not shown in the figure) through a power switch 190 on the handheld handle 180, the speed reducer 130 and the direct current servo motor 140 are also electrically connected with the power supply device through a power cable (not shown in the figure), the industrial personal computer is also connected with the power supply device, the power supply device can be a storage battery, and the power supply device supplies power to the industrial personal computer, the electromagnet 50, the direct current servo motor 140 and the speed reducer 130.
As shown in fig. 1 and 2, the slip ring fixing body 60 includes a slip ring mounting base 61, the conductive slip ring 70 is penetratingly mounted on the slip ring mounting base 61 by a slip ring fixing screw 75, the slip ring mounting base 61 is provided with a front end 62 in a forward shape, the front end 62 is provided with a front cavity 620 for accommodating a forward protruding portion of the rotating portion 71 from the slip ring mounting base 61, the slip ring mounting base 61 is provided with a rear end 63 in a rearward shape, the rear end 63 is provided with a rear protruding portion and a fixing portion 72 for accommodating the rearward protruding portion of the rotating portion 71 from the slip ring mounting base 61, and a rear cavity 630 for mounting the ring gear 90, the ring gear 90 is mounted on the rear end 63 by a ring gear fixing screw 91, and the fixing portion 72 protrudes out of the ring gear 90.
In the present invention, the conductive slip ring 70 is an existing component in the art. The conductive slip ring 70 functions such that the rotating portion 71 rotates together with the slip ring fixing body 60 and the probe head 20, and the fixing portion 72 and the stator outgoing line 74 led out therefrom do not rotate, thereby preventing the cable from being wound due to rotation.
As shown in fig. 1, a stopper 301 is disposed on an inner wall of the housing 300, a spacer 83 is disposed between the front bearing 81 and the rear bearing 82, and a bearing cover 110 is mounted at a rear end of the housing 300 by a cover screw 111, wherein: as viewed in the radial direction of the slip ring fixing body 60, the front bearing 81 and the rear bearing 82 are both interposed between the outer wall of the slip ring fixing body 60 and the inner wall of the housing 300; the front bearing 81, the rear bearing 82, and the spacer 83 are positioned between the stopper 301 and the bearing cover 110 as viewed in the axial direction of the slip ring fixing body 60 so that the front bearing 81 and the rear bearing 82 do not move forward and backward.
Referring to fig. 1 and 2, a positioning cone mounting groove 22 and a plurality of probe mounting grooves 21 are provided on the disc-shaped probe plate 20, the positioning cone mounting groove 22 is located at the center of the probe plate 20, and each probe mounting groove 21 is provided around the positioning cone mounting groove 22, wherein: the center pilot cone 10 is elastically and telescopically mounted in the pilot cone mounting groove 22, and the ultrasonic probe 30 is elastically and telescopically mounted in the probe mounting groove 21.
As shown in fig. 3, the central positioning cone 10 includes a cone column 11, a positioning screw 14 is fixed after the rear end of the cone column 11 passes through a through hole on the bottom of the positioning cone mounting groove 22, a gasket 15 is arranged between the positioning screw 14 and the rear end of the cone column 11, a wedge-shaped cone head 12 is arranged at the front end of the cone column 11, the cone column 11 and the cone head 12 are integrally formed, a buffer spring 13 is sleeved on the cone column 11, and the shape of the cone head 12 is matched with the shape of a wedge-shaped central hole 410 on the end surface of the axle end 400, wherein: when conical head 12 is pressed, under the guiding of positioning cone mounting groove 22 and the elastic action of buffer spring 13, conical head 12 retracts into positioning cone mounting groove 22, and simultaneously conical column 11, conical head 12 and positioning screw 14 move for a certain distance towards the direction in which conical head 12 retracts into positioning cone mounting groove 22, and here, gasket 15 plays a limiting role in preventing conical head 12 from disengaging from positioning cone mounting groove 22.
In practical design, the tapered surface of the conical head 12 is matched with the tapered surface of the wedge-shaped central hole 410 of the axle shaft end 400, so that the central positioning cone 10 can be completely inserted into the central hole 410 and tightly attached to the wall of the central hole 410, and in addition, after the probe disc 20 and the electromagnet disc 40 of the device are attached to the end surface of the axle shaft end 400, the buffer spring 13 can enable the central positioning cone 10 to be tightly abutted against the central hole 410, so that the central positioning cone 10 and the electromagnet 50 are mutually matched to play a stable positioning role for the whole device.
As shown in fig. 7, the ultrasonic probe 30 includes a probe body 34, a probe boss 32 is disposed at the rear end of the probe body 34, the cross-sectional area of the probe boss 32 is slightly larger than that of the probe body 34, a probe column 31 is disposed at the rear end of the probe boss 32, the probe body 34, the probe boss 32 and the probe column 31 are integrally formed, a tightly supported spring 33 is sleeved on the probe column 31, the length of the tightly supported spring 33 (i.e. the initial length is not pressed) is larger than that of the probe column 31, a probe mounting groove 21 is arranged on the probe disc 20 in a penetrating manner, a side wall of the probe mounting groove 21 is provided with a limit shallow groove 211, a probe gland 23 is mounted at the rear end of the probe disc 20, and a caulking groove 230 is disposed on the probe gland 23, wherein: after the ultrasonic probe 30 is installed in the probe installation groove 21, the probe boss 32 is movably embedded in a limit space formed by the limit shallow groove 211 of the probe installation groove 21 and the probe gland 23, and the probe column 31 sleeved with the tight-supporting spring 33 is positioned in the embedded groove 230; when the ultrasonic probe 30 is pressed, the ultrasonic probe 30 retracts into the probe mounting groove 21 under the guiding of the limit shallow groove 211 (or the probe mounting groove 21) and the elastic action of the tight spring 33; the cable led out from the ultrasonic probe 30 is connected to the rotor lead-in wire 73 of the conductive slip ring 70 through a through hole 231 formed in the probe cover 23.
During flaw detection, the ultrasonic probe 30 can be kept to be tightly attached to the end face of the axle shaft end 400 under the elastic action of the abutting spring 33, so that a good coupling effect of the ultrasonic probe 30 and the axle shaft end 400 is ensured, and the detection accuracy is ensured.
As shown in fig. 1 and 2, the probe cover 23 is fixed to the front end 62 of the slip ring fixing body 60 by a stop ring 84, specifically, the probe cover 23 is fixed to the probe disc 20 by a screw (not shown), the probe cover 23 is fixed to the stop ring 84 by a screw (not shown), and the stop ring 84 is fixed to the front end 62 of the slip ring fixing body 60 by a fixing screw 85, so that the probe disc 20 does not move backward. Here, the design of the probe cover 23 and the design of the screws fixed to the stopper ring 84 to be installed in the axial direction of the probe disk 20 allow the probe disk 20 to be easily detached, thereby facilitating the replacement of the ultrasonic probe 30.
In the practical design, as shown in fig. 6, the ultrasonic probes 30 are uniformly distributed around the central positioning cone 10 in the probe mounting groove 21, for example, 6 ultrasonic probes 30 are uniformly distributed, 12 cables of the 6 ultrasonic probes 30 respectively pass through the corresponding through holes 231 to be connected with 12 rotor incoming lines 73 of the conductive slip ring 70, and the 6 ultrasonic probes 30 at different angles are automatically scanned simultaneously.
In the present invention, the ultrasonic probes 30 having different angles are configured such that the directions of the ultrasonic beams emitted from the ultrasonic probes 30 are different from each other when the ultrasonic probes 30 are rotated to the same position on the end surface of the axle shaft end 400 one by one. As shown in fig. 8, the ultrasonic probe 30 emits an ultrasonic beam with an angle θ, which forms an included angle with the axle axis L, and when the other ultrasonic probes 30 rotate to the same position as the ultrasonic probe 30, the included angles formed between the ultrasonic beams emitted by the other ultrasonic probes and the axle axis L are different from θ, so that the multi-angle scanning mode completely covers the whole flaw detection scanning area of the axle, and the detection efficiency is greatly improved.
In the present invention, the probe body 34 of the ultrasonic probe 30 is a conventional device in the art, which is also called an ultrasonic sensor, and generally adopts a piezoelectric transducer probe, and is composed of a piezoelectric wafer, a wedge, a joint and a lead. In the present invention, the ultrasonic probe 30 is used to detect defects in a metal solid axle.
As shown in fig. 1 and 2, an annular electromagnet disk 40 is provided with an electromagnet mounting groove 41, an electromagnet 50 is fixedly mounted in the electromagnet mounting groove 41 by a fastening screw 51, and the electromagnet disk 40 is fixed to the front end of the housing 300 by a locking screw 43.
In practical designs, a plurality of electromagnets 50 mounted in the electromagnet mounting groove 41 are evenly distributed around the probe card 20, for example, 12 electromagnets 50 are evenly distributed, to provide a large magnetic attraction force. In addition, the electromagnet 50 is flush with the front end face of the electromagnet disk 40, and the electromagnet 50 is flush with the front end face of the probe disk 20, so that when the electromagnet 50 is attached to the end face of the axle shaft end 400, the pressed ultrasonic probe 30 can be closely attached to the end face of the axle shaft end 400 by the elastic force of the abutting spring 33.
Further, as shown in fig. 1 and 2, the speed reducer 130 is fixedly mounted on the rear end surface of the bearing cover 110 by the motor fixing screw 101, an output shaft of the speed reducer 130 protruding forward from the bearing cover 110 is fixed to the gear 100, and an input shaft of the speed reducer 130 is connected to an output shaft of the dc servo motor 140.
Specifically, as shown in fig. 1, the dc servo motor 140 is connected to one end of the supporting rod 160 through the pressing block 170, the other end of the supporting rod 160 is fixed to the inner wall of the motor cover 120 through the screw 161, the dc servo motor 140 is firmly fixed in the motor cover 120 through the supporting rod 160, and the motor cover 120 is fixed to the rear end of the housing 300 through the motor cover screw 121. In addition, the rear cover 150 is fixed to the rear end of the motor cover 120 by a rear cover screw 152.
As shown in fig. 4, the rear end cap 150 is provided with an outlet hole 151 for allowing an output cable connected to the stator outlet 74 to pass through and a power cable connected to the dc servo motor 140, the speed reducer 130 and the power switch 190 to pass through, and the rear end cap 150 is further provided with a screw hole 1520 for mounting the rear end cap screw 152. Fig. 4 shows the case of 3 outlet holes 151.
Referring to fig. 1, the electromagnet disk 40 is provided with an annular cable cavity 42, and a power cable led out from the electromagnet 50 extends into the handle 180 through the cable cavity 42 and a through hole 302 formed in the housing 300 to be electrically connected with the power switch 190, and then is electrically connected with an external power device through a through hole (not shown) formed in the housing 300 and the outlet hole 151 formed in the rear end cap 150.
As will be appreciated with reference to fig. 5 and 6, the outer diameter of electromagnet disc 40 corresponds to the outer diameter of the end face of axle stub 400, wherein: when the portable ultrasonic flaw detection device 500 for the axle end of the railway axle is positioned on the end surface of the axle end 400 of the railway axle, the ultrasonic probe 30 on the probe disc 20 is between the wedge-shaped central hole 410 and the screw hole 420 when being tightly attached to the end surface of the axle end 400 of the railway axle.
Referring to fig. 6, a wedge-shaped central bore 410 is shown in the center of the end face of an axle stub 400 of a solid axle, with a plurality of screw bores 420 (e.g., 3 screw bores 420) evenly spaced about central bore 410.
In the present invention, the front-back direction of the portable ultrasonic flaw detection device 500 for a railway axle end of the present invention is set as follows: the centering cone 10 is positioned forward and the rear end cap 150 is positioned rearward.
Referring to fig. 5, in use, power cables leading out of the electromagnet 50, the dc servo motor 140, and the speed reducer 130 from the rear end cover 150 are connected to an external power device, and a signal cable leading out of the dc servo motor 140 from the rear end cover 150 and an output cable leading out of the conductive slip ring 70 from the rear end cover 150 are connected to corresponding interfaces on an external industrial personal computer (portable industrial personal computer), respectively.
Then, the hand-held handle 180 is held by hand to move the device 500 of the present invention to the front of the end face of the axle shaft end 400, so that the central positioning cone 10 is aligned with the central hole 410, then the central positioning cone 10 is inserted into the central hole 410, at this time, the probe disc 20 and the electromagnet disc 40 are in contact with the end face of the axle shaft end 400, so that the power switch 190 is pressed, the electromagnet 50 is energized, the electromagnet 50 is firmly adsorbed on the end face of the axle shaft end 400 to ensure the rotational stability of the probe disc 20, at this time, the ultrasonic probe 30 is tightly attached to the end face of the axle shaft end 400, and at this time, the electromagnet 50 is matched with the central positioning cone 10 tightly inserted into the central hole 410, so that the device 500 of the present invention is stably adsorbed on the end face of the axle shaft end 400, on the one hand, and on the other hand, the accurate positioning of the ultrasonic probe 30 in the whole flaw detection process is ensured.
Therefore, the detection personnel can start flaw detection by the industrial personal computer.
During flaw detection (or flaw detection scanning), the industrial personal computer starts the direct current servo motor 140 to operate (the industrial personal computer controls the flaw detection speed by controlling the rotating speed and the rotating direction of the direct current servo motor 140), so that the direct current servo motor 140 drives the gear 100 to rotate by the reducer 130, and the gear 100 drives the slip ring fixing body 60 and the probe disc 20 to rotate together by the gear ring 90 under the action of the front bearing 81 and the rear bearing 82. In the process that the ultrasonic probes 30 rotate along with the probe disc 20, the industrial personal computer controls the ultrasonic probes 30 to emit ultrasonic beams to the solid axle, and then receives the ultrasonic beams which are collected by the ultrasonic probes 30 and fed back through the solid axle.
When the probe disc 20 rotates 360 degrees, the probe disc stops rotating, so that one-time flaw detection is completed on the solid axle, and in the flaw detection process, the device 500 of the utility model realizes the comprehensive coverage of the whole flaw detection scanning area of the solid axle. The industrial personal computer automatically generates a scanning image based on the received ultrasonic beam, so that the conditions of the position, the distribution state, the size and the like of the defects of the solid axle are obtained, the flaw detection of the axle defects is completed, and the flaw detection result can relate to the large crack conditions of the wheel seat embedding part, the gear seat or brake disc embedding part and the axle body of the axle, the sound transmission performance of the axle and the like.
After flaw detection is finished, a detector controls the direct current servo motor 140 to stop running through the industrial personal computer, then the electromagnet 50 is powered off through the power switch 190, then the electromagnet 50 does not adsorb the axle shaft end 400 any more, and at the moment, the device 500 can be taken down from the axle shaft end 400 to carry out the next flaw detection task.
The utility model has the advantages that:
the ultrasonic flaw detection device has the advantages of reasonable and compact structural design, small volume, convenient and quick handheld positioning and high detection speed, can be stably positioned at the shaft end of the solid axle for ultrasonic flaw detection, is convenient to move and carry, and can be well used for ultrasonic nondestructive flaw detection of railway axles on the basis of meeting the requirements of iron standards and iron general wheel gauges.
The above description is of the preferred embodiment of the present invention and the technical principles applied thereto, and it will be apparent to those skilled in the art that any changes and modifications based on the equivalent changes and simple substitutions of the technical solutions of the present invention are within the protection scope of the present invention without departing from the spirit and scope of the present invention.
Claims (8)
1. The utility model provides a portable railway axletree axle head ultrasonic inspection detection device which characterized in that: it includes the open shell in both ends, wherein: the slip ring fixing body with the H-shaped section is rotatably arranged in the shell through a front bearing and a rear bearing; a probe disc is fixedly installed at the front end of the slip ring fixing body, a central positioning cone is installed forwards at the center of the probe disc, and a plurality of ultrasonic probes with different angles are installed on the probe disc around the central positioning cone; a gear ring is fixedly installed at the rear end of the slip ring fixing body, the gear ring is meshed with a gear, the gear is connected with an output shaft of a direct current servo motor through a speed reducer, and the direct current servo motor with a coder is connected with an external industrial personal computer; the middle part of the slip ring fixing body is provided with a conductive slip ring in a penetrating way, the rotor incoming line of the forward rotating part of the conductive slip ring is electrically connected with the ultrasonic probe, and the stator outgoing line of the backward fixing part of the conductive slip ring is connected with the industrial personal computer; an electromagnet disc is fixedly installed at the front end of the shell, the electromagnet disc is arranged around the periphery of the probe disc, and a plurality of electromagnets are embedded on the electromagnet disc; the rear end of the shell is provided with a cylindrical motor cover, the rear end of the motor cover is provided with a rear end cover, and the rear end cover is provided with a wire outlet hole; the hand-held handle is installed to the shell lateral wall, and the electro-magnet is through handheld power switch on hand and outside power equipment electric connection, industrial computer, speed reducer and direct current servo motor and power equipment electric connection.
2. The portable ultrasonic flaw detection device for the axle end of a railway axle according to claim 1, wherein:
the slip ring fixing body comprises a slip ring mounting seat, the conductive slip ring is installed on the slip ring mounting seat in a penetrating mode, the slip ring mounting seat is provided with a cylindrical front end portion forwards, the front end portion is provided with a front cavity used for containing the rotating portion from a forward extending portion of the slip ring mounting seat, the slip ring mounting seat is provided with a cylindrical rear end portion backwards, the rear end portion is provided with a fixing portion used for containing the rotating portion from a backward extending portion of the slip ring mounting seat and the fixing portion, and the fixing portion is used for being installed in a rear cavity of the gear ring, and the fixing portion is worn out of the gear ring.
3. The portable ultrasonic flaw detection device for the axle end of a railway axle according to claim 2, wherein:
be equipped with backstop portion on the inner wall of shell, the front bearing with be equipped with the spacer between the rear bearing, the bearing gland is installed to the rear end of shell, wherein: the front bearing and the rear bearing are arranged between the slip ring fixing body and the shell along the radial direction of the slip ring fixing body; the front bearing, the rear bearing and the spacer are positioned between the stopper and the bearing gland in the axial direction of the slip ring stationary body.
4. The portable ultrasonic flaw detection device for the axle end of a railway axle according to claim 2, wherein:
discoid be equipped with a location awl mounting groove and a plurality of probe mounting groove on the probe dish, the location awl mounting groove is in the center of probe dish, each probe mounting groove sets up around the location awl mounting groove, wherein: the center positioning cone is elastically and telescopically arranged in the positioning cone mounting groove, and the ultrasonic probe is elastically and telescopically arranged in the probe mounting groove.
5. The portable ultrasonic flaw detection device for the axle end of a railway axle according to claim 4, wherein:
the center location awl is including awl post, and the rear end of awl post passes a set screw of fixed behind the through-hole on the tank bottom of location awl mounting groove is equipped with a gasket between set screw and the awl post rear end, and the front end of awl post is equipped with a wedge form conical head, and the cover is equipped with buffer spring on the awl post, and the wedge form centre bore shape looks adaptation on the terminal surface of conical head shape and axletree axle head, wherein: when the conical head is pressed, under the guiding action of the positioning cone mounting groove and the elastic action of the buffer spring, the conical head retracts into the positioning cone mounting groove, and simultaneously the conical column, the conical head and the positioning screw move towards the direction that the conical head retracts into the positioning cone mounting groove;
ultrasonic transducer includes the probe body, and the rear end of probe body is equipped with a probe boss, and the cross sectional area of probe boss is greater than the cross sectional area of probe body, and the rear end of probe boss is equipped with a probe post, and the cover is equipped with tightly supports the spring on the probe post, and the length that tightly supports the spring is greater than the length of probe post, the probe mounting groove runs through the probe dish sets up, the lateral wall of probe mounting groove is equipped with spacing shallow slot, the probe gland is installed to the rear end of probe dish, is equipped with the caulking groove on the probe gland, wherein: after the ultrasonic probe is installed in the probe installation groove, the probe boss is movably embedded in a limiting space formed by a limiting shallow groove of the probe installation groove and the probe gland, and meanwhile, the probe column sleeved with the tight-supporting spring is positioned in the embedding groove; when the ultrasonic probe is pressed, the ultrasonic probe retracts into the probe mounting groove under the guiding of the limit shallow groove and the elastic action of the tight-resisting spring; and a cable led out by the ultrasonic probe penetrates through a through hole formed in the probe press cover and is connected with the rotor incoming line of the conductive slip ring.
6. The portable ultrasonic flaw detection device for the axle end of a railway axle according to claim 5, wherein:
the probe gland is fixed on the front end part of the slip ring fixing body through a stop ring.
7. The portable ultrasonic flaw detection device for the axle end of a railway axle according to claim 6, wherein: and an electromagnet mounting groove is formed in the annular electromagnet disc, and the electromagnet is fixed in the electromagnet mounting groove.
8. The portable ultrasonic flaw detection device for the axle end of a railway axle according to claim 7, wherein:
the electromagnetic iron disc is provided with an annular cable cavity, a power cable led out by the electromagnet extends into the handheld handle through the cable cavity and the through hole formed in the shell and is electrically connected with the power switch, and then the power cable is electrically connected with external power equipment through the through hole in the shell and the wire outlet hole in the rear end cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121785558.7U CN215910401U (en) | 2021-08-02 | 2021-08-02 | Portable ultrasonic flaw detection device for axle end of railway axle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121785558.7U CN215910401U (en) | 2021-08-02 | 2021-08-02 | Portable ultrasonic flaw detection device for axle end of railway axle |
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| Publication Number | Publication Date |
|---|---|
| CN215910401U true CN215910401U (en) | 2022-02-25 |
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| CN202121785558.7U Active CN215910401U (en) | 2021-08-02 | 2021-08-02 | Portable ultrasonic flaw detection device for axle end of railway axle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024040654A1 (en) * | 2022-08-24 | 2024-02-29 | 天津精益铁安机电技术有限公司 | Mandrel floating mechanism for ultrasonic tube end detection |
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2021
- 2021-08-02 CN CN202121785558.7U patent/CN215910401U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024040654A1 (en) * | 2022-08-24 | 2024-02-29 | 天津精益铁安机电技术有限公司 | Mandrel floating mechanism for ultrasonic tube end detection |
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