CN111307951A - Rail bottom side flaw detection undercarriage for welding seam of welding joint of welding rail foundation ground steel rail - Google Patents
Rail bottom side flaw detection undercarriage for welding seam of welding joint of welding rail foundation ground steel rail Download PDFInfo
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- 239000000523 sample Substances 0.000 claims abstract description 127
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/225—Supports, positioning or alignment in moving situation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
- G01N29/265—Arrangements for orientation or scanning by relative movement of the head and the sensor by moving the sensor relative to a stationary material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/28—Details, e.g. general constructional or apparatus details providing acoustic coupling, e.g. water
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
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- G01N2291/028—Material parameters
- G01N2291/0289—Internal structure, e.g. defects, grain size, texture
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/10—Number of transducers
- G01N2291/105—Number of transducers two or more emitters, two or more receivers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/26—Scanned objects
- G01N2291/267—Welds
- G01N2291/2675—Seam, butt welding
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Abstract
The invention discloses a rail bottom side flaw detection undercarriage for welding a welding joint of a rail foundation ground steel rail, which comprises a rail bottom flaw detection base, two A transmitting structures and two A receiving structures, wherein the rail bottom flaw detection base is positioned below the steel rail; the A transmitting structure comprises an A transmitting probe which emits an A ultrasonic wave and inclines to the length direction of the steel rail, the A receiving structure comprises a plurality of A receiving probes which receive the A ultrasonic wave, and the direction of the A receiving probes which receive the A ultrasonic wave is perpendicular to the transmitting direction of the A ultrasonic wave; the directions of the two A transmitting probes for emitting the ultrasonic waves are not parallel. The invention has the beneficial effects that: the scheme can be used for detecting the flaw of the rail bottom side of the steel rail, is favorable for realizing automatic control, and can improve the flaw detection efficiency and the flaw detection precision.
Description
Technical Field
The invention relates to the field of ultrasonic flaw detection, in particular to a rail bottom side flaw detection undercarriage for welding a welding joint weld of a rail base ground steel rail.
Background
With the comprehensive speed increase, expansion and upgrade of railways in China and the rapid development of passenger dedicated lines and high-speed heavy haul railways, higher requirements are put forward on the quality of steel rail welding joints. The quality control of the steel rail welding joint directly influences the railway transportation production and the driving safety, so that the single-probe and double-probe full-section flaw detection is realized on a steel rail welding seam and a heat affected zone from the aspects of improving the flaw detection standard and using novel equipment, the welding joint flaw detection capability is improved, the double-insurance strategy for ensuring that the welding joint leaves the factory without damage is realized, and the effective means for ensuring the railway driving safety is also realized. Particularly, the work is very important in a high-speed passenger special line.
The flash welding of steel rails is a steel rail welding method with high production efficiency and relatively stable and reliable quality, and is also the most widely applied rail welding method at home and abroad at present. During the flash welding, the problems of unstable welding equipment and technological parameters, over standard geometric dimension of the steel rail, material of the steel rail base metal and the like exist. The welded joint has various defects, and the following 2 defects are mainly generated according to types:
1. bulk or spot defects such as porosity and slag inclusions;
2. plane defects such as grey spots, lack of welding, etc., wherein the plane defects are dangerous, not only reduce the effective cross section of the rail, but also can cause stress concentrations, even leading to weld pull-apart or rail breakage.
At present, the following problems exist in the flaw detection of a weld joint before flash welding steel rails leave a factory:
1. the manual handheld probe is adopted for flaw detection, so that the influence factors are many, the scanning range is not comprehensive, manual identification and judgment are carried out, the flaw detection result is not reliable, and the safety technology is not guaranteed;
2. for planar defects, double-probe K-type and tandem flaw detection methods are required, the operation is complex, the requirements on the technical grade and the skill of flaw detection operators are high, and manual flaw detection is difficult to realize;
3. the flaw detection efficiency is low, and the flaw detection process is a bottleneck for restricting the production of a welding track assembly line;
4. the informatization level is low, the storage of flaw detection data is not facilitated, and the welding process cannot be improved through data statistical analysis.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the rail bottom side flaw detection undercarriage for welding the welding seam of the rail base ground steel rail, which is used for realizing automatic detection of the rail bottom side of the steel rail and improving the detection efficiency and precision.
The invention is realized by the following technical scheme: a rail bottom side flaw detection undercarriage for welding a welding joint of a rail-based ground steel rail comprises a rail bottom flaw detection base, two A transmitting structures and two A receiving structures, wherein the rail bottom flaw detection base is positioned below the steel rail;
the A transmitting structure comprises an A transmitting probe which emits an A ultrasonic wave and inclines to the length direction of the steel rail, the A receiving structure comprises a plurality of A receiving probes which receive the A ultrasonic wave, and the direction of the A receiving probes which receive the A ultrasonic wave is perpendicular to the transmitting direction of the A ultrasonic wave;
the directions of the two A transmitting probes for emitting the ultrasonic waves are not parallel.
Furthermore, in order to better realize the invention, two rail bottom flaw detection structure driving devices capable of respectively driving the A transmitting structure and the A receiving structure to be far away from or close to the steel rail are arranged on the rail bottom flaw detection base.
Further, in order to better implement the invention, the rail bottom flaw detection structure driving device comprises an installation bottom plate A, an air cylinder A in transmission connection with the installation bottom plate A, and a bottom plate A sliding rail arranged below the installation bottom plate A and in sliding connection with the installation bottom plate A.
Furthermore, in order to better implement the invention, the a receiving structure and the a transmitting structure are respectively arranged on the a mounting base plate, and the a receiving structure are diagonally distributed or are positioned on the same side of the steel rail.
Furthermore, in order to better implement the invention, the a receiving structure comprises two a receiving vertical plates arranged on the a mounting base plate and an a receiving probe mounting seat arranged between the two a receiving vertical plates, and the a receiving probe mounting seat is provided with a plurality of a receiving probe mounting grooves for mounting the a receiving probe.
Furthermore, in order to better realize the invention, one side of the A receiving probe mounting seat, which is close to the steel rail, is provided with an A receiving probe wear-resisting plate, and one side of the A receiving vertical plate, which is close to the steel rail, is provided with an A receiving probe limiting plate; the A receiving probe mounting seat is movably connected with the A receiving vertical plate.
Furthermore, in order to better realize the invention, the A emission structure comprises two A emission vertical plates arranged on an A installation bottom plate and an A emission probe installation seat arranged between the two A emission vertical plates, and a plurality of A emission probe installation grooves used for installing the A emission probe are arranged on the A emission probe installation seat.
Furthermore, in order to better realize the invention, one side of the A emission probe mounting seat close to the steel rail is provided with an A emission probe wear-resisting plate, and one side of the A emission vertical plate close to the steel rail is provided with an A emission probe limiting plate; the A emission probe mounting seat is movably connected with the A emission vertical plate.
Furthermore, in order to better realize the invention, a flaw detection base lifting mechanism is arranged below the rail bottom flaw detection base, a flaw detection base mounting base is arranged below the flaw detection base lifting mechanism, and the flaw detection base lifting mechanism is in transmission connection with a flaw detection base driving structure.
Furthermore, in order to better realize the invention, the flaw detection base lifting mechanism comprises four connecting rods which are distributed on two opposite sides of the rail bottom flaw detection base in pairs, the four connecting rods are parallel to each other, and two ends of each connecting rod are respectively hinged with the rail bottom flaw detection base and the flaw detection base mounting seat.
Further, in order to better realize the invention, the flaw detection base driving structure adopts an air cylinder, a cylinder body of the flaw detection base driving structure is hinged with the flaw detection base mounting seat, a piston rod of the flaw detection base driving structure is hinged with the rail bottom flaw detection base, and the flaw detection base driving structure and the connecting rod are in X-shaped cross distribution.
The beneficial effect that this scheme obtained is:
the scheme can be used for detecting the flaw of the rail bottom side of the steel rail, is favorable for realizing automatic control, and can improve the flaw detection efficiency and the flaw detection precision.
Drawings
FIG. 1 is a schematic structural diagram of the present embodiment;
FIG. 2 is a schematic structural diagram of the upper structure of a rail bottom flaw detection base;
FIG. 3 is a schematic diagram of an A emission structure;
FIG. 4 is a schematic diagram of the structure of the A receiving structure;
FIG. 5 is a schematic structural view of a flaw detection base lifting mechanism;
wherein the device comprises a 12-steel rail, a 71-rail bottom flaw detection base, a 72-flaw detection base lifting mechanism, a 73-flaw detection base mounting seat, a 74-flaw detection base driving structure, a 75-rail bottom flaw detection structure driving device, a 751-A air cylinder, a 752-A bottom plate slide rail, a 753-A mounting bottom plate, a 754-A mounting bottom plate limiting structure, a 755-A air cylinder mounting seat, a 76-A transmitting structure, a 761-A transmitting vertical plate, a 762-A transmitting probe mounting seat, a 763-A transmitting probe mounting groove, a 764-A transmitting probe wear-resisting plate, a 765-A transmitting probe limiting plate, a 77-roller, a 78-A receiving structure, a 781-A receiving vertical plate, a 782-A receiving probe mounting seat, a 783-A receiving probe mounting groove and a 785-A receiving probe limiting plate, 784-A receives the probe wear plate.
Detailed Description
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.
Example 1:
as shown in fig. 1, in this embodiment, a rail-bottom-side flaw detection undercarriage for welding a welding seam of a rail-based ground rail welding joint includes a rail-bottom flaw detection base 71 located below a rail 12, two a transmitting structures 76 arranged on the rail-bottom flaw detection base 71, and two a receiving structures 78 arranged on the rail-bottom flaw detection base 71, where the a transmitting structures 76 and the a receiving structures 78 are in one-to-one correspondence and are respectively arranged on two sides of the rail 12;
the A transmitting structure 76 comprises an A transmitting probe which emits an A ultrasonic wave inclined to the length direction of the steel rail 12, the A receiving structure 78 comprises a plurality of A receiving probes which receive the A ultrasonic wave, and the receiving direction of the A receiving probes is perpendicular to the transmitting direction of the A ultrasonic wave;
the directions of the two A transmitting probes for emitting the ultrasonic waves are not parallel.
When it is desired to inspect the rail 12 on the rail foot side, the rail 12 is placed above the foot inspection base 71 and between the a transmitter structure 76 and the a receiver structure 78. The A transmitting probe and the A receiving probe are respectively connected with the controller, the A transmitting probe is used for emitting ultrasonic waves along the direction inclined to the steel rail 12, the ultrasonic waves penetrate through the steel rail 12, the A receiving probe is used for receiving the ultrasonic waves, and signals received by the A receiving probe are transmitted to the controller to be processed so as to analyze whether flaws exist in the steel rail 12 or not.
The rail bottom flaw detection base 71 drives the a transmitting structure 76 and the a receiving structure 78 to move along the length direction of the steel rail 12, so that flaw detection can be performed on the rail bottom side of the steel rail 12 within the moving range.
If the direction of the flaw inside the steel rail 12 is parallel to the direction of the ultrasonic waves, the flaw is difficult to detect by using the ultrasonic waves, so that the condition of missed detection is caused, the ultrasonic waves are emitted by using the two A emitting structures 76 along different directions, the condition of missed detection can be avoided, and the detection precision is improved. And can accomplish the detection in a stroke scope, be favorable to improving the efficiency that detects.
In this embodiment, the directions of the ultrasonic waves emitted by the two a-emission probes are symmetrically distributed with the plane perpendicular to the length direction of the steel rail 12 as a symmetry plane.
The A transmitting probe and the A receiving probe can be controlled by the controller, and the movement of the rail bottom flaw detection base 71 can be automatically controlled, so that the whole flaw detection process can be automatically realized, and the detection efficiency and precision can be improved.
As shown in fig. 1 and 2, in the present embodiment, two rollers 77 for supporting the rail 12 can be disposed on the rail bottom flaw detection base 71, an axis of the roller 77 is perpendicular to a length direction of the rail 12, the rail 12 is supported by the roller 77, so that bending deformation of the rail itself due to suspension of the rail under gravity can be avoided, friction can be reduced by rolling, and mutual abrasion between the rail bottom flaw detection base 71 and the rail 12 can be avoided.
Example 2:
on the basis of the above embodiments, in the present embodiment, the rail bottom flaw detection base 71 is provided with two rail bottom flaw detection structure driving devices 75 capable of respectively driving the a transmitting structure 76 and the a receiving structure 78 to move away from or close to the steel rail 12. The distance between the A transmitting structure 76 or the A receiving structure 78 and the steel rail 12 can be adjusted by using the rail bottom flaw detection structure driving device 75, and when the steel rail 12 is placed, the A transmitting structure 76 and the A receiving structure 78 are controlled to be outwards far away from the steel rail 12, so that the steel rail 12 is convenient to mount and place, and the structural damage caused by collision is avoided. After the rail is positioned, the a transmitter structure 76 or the a receiver structure is moved inward to be close to the rail 12, so as to reduce external interference and prevent detection accuracy from being affected.
As shown in fig. 2, the rail foot flaw detection structure driving device 75 includes an a-mounting base plate 753, an a-cylinder 751 drivingly connected to the a-mounting base plate 753, and an a-base plate slide rail 752 provided below the a-mounting base plate 753 and slidably connected to the a-mounting base plate 753.
The a receiving structure 78 and the a transmitting structure 76 are respectively disposed on the a mounting base plate 753, and the a receiving structure 78 are diagonally distributed or located on the same side of the steel rail 12.
Because the a receiving structure 78 and the a transmitting structure 76 may have different width dimensions, the a receiving structure 78 and the a receiving structure 78 are diagonally distributed, and the a mounting bottom plates 753 having the same length can be used on both sides of the steel rail 12, so that a reasonable layout space is facilitated, and mutual interference of ultrasonic waves emitted by the two a receiving structures 78 can be avoided.
The a-mount base plate 753 is used as a mounting base for the a-receiving structure 78 or the a-transmitting structure 76, and the a-mount base plate 753 is supported by the a-base plate slide rails 752 to keep the a-mount base plate 753 balanced and stable.
The A cylinder 751 is used for pushing the A installation bottom plate 753 to move back and forth along the A bottom plate sliding rail 752 so as to control the A receiving probe to be close to or far away from the steel rail 12.
The rail bottom flaw detection base 71 is provided with two springs which are located on two sides of the A cylinder 751 and are connected with the A mounting bottom plate 753 and have the same specification, the two springs are parallel and are in the same compression or stretching state, the springs are utilized to help the rail bottom flaw detection base 71 to keep stable and balanced, the influence of errors in installation on the moving precision of the rail bottom flaw detection base 71 is reduced, and the detection precision is prevented from being influenced.
Be provided with two A cylinder mount 755 that are located A cylinder 751 both sides respectively on rail foot flaw detection base 71, A cylinder 751 articulate with A cylinder mount 755, the articulated effect of cooperation piston rod and A mounting plate 753 can increase A mounting plate 753 adjustable range and flexibility, avoids taking place to interfere and influence the going on of detection achievement between A cylinder 751 and the A mounting plate 753.
In this embodiment, the rail foot flaw detection base 71 is provided with an a-mounting base plate limit structure 754, the a-mounting base plate limit structure 754 and the a cylinder 751 are located on the same side of the a-mounting base plate 753, and the a-mounting base plate limit structure 754 is used for limiting the maximum distance that the a-mounting base plate 753 can move.
As shown in fig. 4, the a receiving structure 78 includes two a receiving vertical plates 781 disposed on the a mounting base plate 753 and an a receiving probe mounting seat 782 disposed between the two a receiving vertical plates 781, and the a receiving probe mounting seat 782 is provided with a plurality of a receiving probe mounting grooves 783 for mounting an a receiving probe.
The A receiving probe mounting seat 782 is used as a mounting base of the A receiving probe, and the A receiving probe is mounted in the A receiving probe mounting groove 783, so that the height of the A receiving probe, the distance from the A receiving probe to the steel rail 12 and other position accuracy can be conveniently controlled, and the detection accuracy can be improved.
The height of the a receiving probe mounting groove 783 can be greater than the height of the a receiving probe, and the width of the a receiving probe mounting groove 783 can be greater than the width of the a receiving probe, so that the mounting angle of the a receiving probe can be adjusted within an appropriate range to control the direction in which the a receiving probe receives the ultrasonic waves. At this time, the position of the receiving probe a needs to be kept fixed by using a corresponding fixing structure, for example, a wedge, a spacer, a screw, and the like, to lock the receiving probe a. In this embodiment, a screw hole communicating with the a receiving probe mounting groove 783 is formed in the a receiving probe mounting seat 782, and the a receiving probe is locked by a screw. A gasket can be arranged between the A receiving probe and the screw, so that the A receiving probe is prevented from being crushed by the screw.
A receiving probe wear-resisting plate A784 is arranged on one side, close to the steel rail 12, of the receiving probe mounting seat A782, and a receiving probe limiting plate A785 is arranged on one side, close to the steel rail 12, of the receiving vertical plate A781; and the A receiving probe mounting seat 782 is movably connected with the A receiving vertical plate 781.
A receiving probe wear-resisting plate 784 is arranged on one side, close to the steel rail 12, of the A receiving probe mounting seat 782, and the A receiving probe wear-resisting plate 784 is used for replacing the A receiving probe mounting seat 782 to be in contact with the steel rail 12 in the detection process, so that abrasion and deformation are reduced, and the detection accuracy is prevented from being influenced due to the change of the shape accuracy of the A receiving probe mounting seat 782.
Due to factors such as mounting accuracy and machining accuracy, it may be difficult to ensure the relative position of the rail 12 and the a receiving probe at the optimum detection position. In this embodiment, make a receiving probe mount pad 782 and a receive riser 781 swing joint, be favorable to making a receiving probe mount pad 782 realize self-adaptation regulation to make a receiving probe antifriction plate 784 can laminate in the rail 12 outside, avoid having great clearance and influence the detection precision between rail 12 and a receiving probe antifriction plate 784.
The receiving vertical plate 781 is provided with a spherical self-adaptive device, and the self-adaptive device is elastically connected with the probe mounting seat 782.
In this embodiment, the movable connection means that the a receiving probe mounting seat 782 can move relative to the a receiving vertical plate 781 in a direction close to the steel rail 12 or away from the steel rail 12, or the a receiving probe mounting seat 782 can rotate relative to the a receiving vertical plate 781.
The contact between the two A receiving probe limiting plates 785 and the steel rail 12 can limit the adjustable range of the A receiving probe mounting seat 782, and damage caused by the fact that the moving range of the A receiving probe mounting seat 782 relative to the A receiving vertical plate 781 exceeds the limit is avoided.
In this embodiment, a sliding block that slides along a direction close to the steel rail 12 or away from the steel rail 12 can be disposed on the a receiving vertical plate 781, so that the a receiving probe mounting seat 782 is rotatably connected to the sliding block, and thus, the movable connection between the a receiving probe mounting seat 782 and the a receiving vertical plate 781 can be realized.
In this embodiment, the a-radiation structure 76 is disposed on the a-mount base plate 753. As shown in fig. 3, the a-transmitting structure 76 includes two a-transmitting risers 761 disposed on the a-mounting base plate 753 and an a-transmitting probe mounting seat 762 disposed between the two a-transmitting risers 761, and the a-transmitting probe mounting seat 762 is provided with a plurality of a-transmitting probe mounting grooves 763 for mounting an a-transmitting probe.
A transmitting probe wear-resisting plate 764 is arranged on one side, close to the steel rail 12, of the transmitting probe mounting seat 762A, and a transmitting probe limiting plate 765 is arranged on one side, close to the steel rail 12, of the transmitting vertical plate 761A; the a-emission probe mounting seat 762 is movably connected with the a-emission riser 761.
The a-transmit structure 76 is similar in structure to the a-receive structure 78, and the detailed structure of the a-transmit structure 76 will not be repeated here. The a cylinder 751 for driving the a emitting structure 76 and the a receiving structure 78 are coaxial and perpendicular to the steel rail 12, so that the control precision is improved, and the detection precision is prevented from being affected.
A launch probe mount pad 762 on set up the apopore that runs through A launch probe mount pad 762, the directional rail 12 of axis of apopore, be provided with the through-hole that communicates with the apopore on the corresponding A launch probe antifriction plate 764, utilize apopore intercommunication water pipe, the accessible apopore lasts the drainage, forms rivers so that regard as the required couplant of ultrasonic broken flaw detection between A launch probe antifriction plate 764 and rail 12. A water outlet hole can also be arranged on the corresponding a receiving probe mounting seat 782. The water pipe can be provided with an electromagnetic valve, and the electromagnetic valve is favorable for realizing remote control to achieve the purpose of water saving.
Example 3:
as shown in fig. 1 and 5, in addition to the above-mentioned embodiments, in the present embodiment, a flaw detection base lifting mechanism 72 is provided below the rail base flaw detection base 71, a flaw detection base mounting base 73 is provided below the flaw detection base lifting mechanism 72, and a flaw detection base driving mechanism 74 is connected to the flaw detection base lifting mechanism 72 in a transmission manner. Utilize the base drive structure 74 that detects a flaw to drive the base elevating system 72 that detects a flaw, can drive rail end base 71 that detects a flaw and remove in vertical direction so that control rail end base 71 goes up and down for after the rail 12 that needs to detect a flaw installed, remove rail end base 71 that detects a flaw and put in place again, avoid rail end base 71 that detects a flaw and the structure above to influence the transmission and the location of rail 12.
In this embodiment, the flaw detection base lifting mechanism 72 includes four connecting rods that are distributed on two opposite sides of the rail bottom flaw detection base 71, the four connecting rods are parallel to each other, and two ends of the connecting rods are hinged to the rail bottom flaw detection base 71 and the flaw detection base mounting base 73 respectively. Therefore, the rail bottom flaw detection base 71 can be driven to move by controlling the rotation of the connecting rod. The four connecting rods are beneficial to keeping the rail bottom flaw detection base 71 stable and realizing parallel movement in the moving process, and the damage of the position precision of the upper structure of the rail bottom flaw detection base 71 caused by deflection is avoided.
The four connecting rods form a parallelogram structure, and the four connecting rods are of a low-pair structure, are convenient to process and manufacture, high in transmission precision, wear-resistant and the like. The lifting speed and the descending speed are adjusted by adjusting a throttle valve on an adjusting cylinder, and the action is soft.
In this embodiment, the flaw detection base driving structure 74 adopts an air cylinder, a cylinder body of the flaw detection base driving structure 74 is hinged to the flaw detection base mounting base 73, a piston rod of the flaw detection base driving structure 74 is hinged to the rail bottom flaw detection base 71, and the flaw detection base driving structure 74 and the connecting rods are distributed in an X-shaped cross manner.
In this embodiment, other undescribed contents are the same as those in the above embodiment, and thus are not described again.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.
Claims (10)
1. The utility model provides a weld rail base ground rail welded joint welding seam's rail bottom side undercarriage of detecting a flaw which characterized in that: the device comprises a rail bottom flaw detection base (71) positioned below a steel rail (12), two A transmitting structures (76) arranged on the rail bottom flaw detection base (71) and two A receiving structures (78) arranged on the rail bottom flaw detection base (71), wherein the A transmitting structures (76) and the A receiving structures (78) are in one-to-one correspondence and are respectively arranged on two sides of the steel rail (12);
the A transmitting structure (76) comprises an A transmitting probe which emits an A ultrasonic wave inclined to the length direction of the steel rail (12), the A receiving structure (78) comprises a plurality of A receiving probes which receive the A ultrasonic wave, and the direction of the A receiving probes which receive the A ultrasonic wave is perpendicular to the transmitting direction of the A ultrasonic wave;
the directions of the two A transmitting probes for emitting the ultrasonic waves are not parallel.
2. The undercarriage for rail bottom side flaw detection for welding a weld of a rail-based ground rail weld joint according to claim 1, wherein: and two rail bottom flaw detection structure driving devices (75) capable of respectively driving the A transmitting structure (76) and the A receiving structure (78) to be far away from or close to the steel rail (12) are arranged on the rail bottom flaw detection base (71).
3. The undercarriage for rail bottom side flaw detection for welding a weld of a rail-based ground rail weld joint according to claim 2, wherein: the rail bottom flaw detection structure driving device (75) comprises an A installation bottom plate (753), an A cylinder (751) in transmission connection with the A installation bottom plate (753), and an A bottom plate sliding rail (752) which is arranged below the A installation bottom plate (753) and is in sliding connection with the A installation bottom plate (753).
4. The undercarriage for rail bottom side flaw detection for welding a weld of a rail-based ground rail weld joint according to claim 3, wherein: the A receiving structure (78) and the A transmitting structure (76) are respectively arranged on the A mounting base plate (753), and the A receiving structure (78) are distributed diagonally or are positioned on the same side of the steel rail (12).
5. The undercarriage for rail bottom side flaw detection for welding a weld of a rail-based ground rail weld joint according to claim 4, wherein: the receiving structure A (78) comprises two receiving vertical plates A (781) arranged on a mounting bottom plate A (753) and a receiving probe mounting seat A (782) arranged between the two receiving vertical plates A (781), and a plurality of receiving probe mounting grooves A (783) used for mounting receiving probes A are arranged on the receiving probe mounting seat A (782).
6. The undercarriage for rail bottom side flaw detection for welding a weld of a rail-based ground rail weld joint according to claim 5, wherein: an A receiving probe wear-resisting plate (784) is arranged on one side, close to the steel rail (12), of the A receiving probe mounting seat (782), and an A receiving probe limiting plate (785) is arranged on one side, close to the steel rail (12), of the A receiving vertical plate (781); the A receiving probe mounting seat (782) is movably connected with the A receiving vertical plate (781).
7. The undercarriage for rail bottom side flaw detection for welding a weld of a rail-based ground rail weld joint according to claim 4, wherein: the A emission structure (76) is arranged on an A installation bottom plate (753), the A emission structure (76) comprises two A emission risers (761) arranged on the A installation bottom plate (753) and an A emission probe installation seat (762) arranged between the two A emission risers (761), and a plurality of A emission probe installation grooves (763) used for installing A emission probes are arranged on the A emission probe installation seat (762).
8. The undercarriage for rail bottom side flaw detection for welding a weld of a rail-based ground rail weld joint according to claim 7, wherein: one side, close to the steel rail (12), of the A emission probe mounting seat (762) is provided with an A emission probe wear-resisting plate (764), and one side, close to the steel rail (12), of the A emission vertical plate (761) is provided with an A emission probe limiting plate (765); the A emission probe mounting seat (762) is movably connected with the A emission vertical plate (761).
9. A rail bottom side flaw detection undercarriage for welding a rail-based ground rail weld joint according to any one of claims 1 to 8, wherein: the rail-bottom flaw detection device is characterized in that a flaw detection base lifting mechanism (72) is arranged below the rail-bottom flaw detection base (71), a flaw detection base mounting base (73) is arranged below the flaw detection base lifting mechanism (72), and the flaw detection base lifting mechanism (72) is in transmission connection with a flaw detection base driving structure (74).
10. The undercarriage for rail bottom side flaw detection for welding a weld of a rail-based ground rail weld joint according to claim 9, wherein: the flaw detection base lifting mechanism (72) comprises four connecting rods which are distributed on two opposite sides of the rail bottom flaw detection base (71) in pairs, the four connecting rods are parallel to each other, and two ends of each connecting rod are respectively hinged with the rail bottom flaw detection base (71) and the flaw detection base mounting seat (73); the flaw detection base driving structure (74) adopts an air cylinder, a cylinder body of the flaw detection base driving structure (74) is hinged with the flaw detection base mounting seat (73), a piston rod of the flaw detection base driving structure (74) is hinged with the rail bottom flaw detection base (71), and the flaw detection base driving structure (74) and the connecting rod are in X-shaped cross distribution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911355119.XA CN111307951A (en) | 2019-12-25 | 2019-12-25 | Rail bottom side flaw detection undercarriage for welding seam of welding joint of welding rail foundation ground steel rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911355119.XA CN111307951A (en) | 2019-12-25 | 2019-12-25 | Rail bottom side flaw detection undercarriage for welding seam of welding joint of welding rail foundation ground steel rail |
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| CN111307951A true CN111307951A (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911355119.XA Pending CN111307951A (en) | 2019-12-25 | 2019-12-25 | Rail bottom side flaw detection undercarriage for welding seam of welding joint of welding rail foundation ground steel rail |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113640390A (en) * | 2021-08-02 | 2021-11-12 | 邢台市超声检测设备有限公司 | Separating and turning-up mechanism of steel rail flaw detector detection frame body |
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