CN212008432U

CN212008432U - Rail bottom section flaw detection undercarriage for welding joint welding seam of welding rail foundation ground steel rail

Info

Publication number: CN212008432U
Application number: CN201922373001.1U
Authority: CN
Inventors: 刘亚仑; 邓华; 段永强; 袁刚强; 胡艺; 徐森; 程勇刚; 周雪清; 刘志毅; 何文骥; 王泽斌; 刘长青; 李想; 段宇; 王建军
Original assignee: Sichuan Yaocheng Non Destructive Testing Technology Co ltd
Current assignee: Sichuan Yaocheng Non Destructive Testing Technology Co ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-11-24
Anticipated expiration: 2029-12-25

Abstract

The utility model discloses a weld rail foot section of rail foundation ground rail welded joint welding seam undercarriage of detecting a flaw, including the B stand, set up at the B mount pad of B stand both sides, set up B probe mount pad and a plurality of setting B probe mounting groove on the B probe mount pad on the B mount pad, B probe mounting groove symmetry on two B probe mount pads sets up in the both sides of B stand. The utility model has the advantages that: the scheme is favorable for realizing automatic flaw detection of the rail bottom section, and the flaw detection efficiency and precision are improved.

Description

Rail bottom section flaw detection undercarriage for welding joint welding seam of welding rail foundation ground steel rail

Technical Field

The utility model relates to an ultrasonic inspection field, specific saying so, weld rail base ground rail welded joint welding seam's rail end section undercarriage of detecting a flaw.

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 welded 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 line and a heat affected zone from the aspects of improving the flaw detection standard and using novel equipment, the double-insurance strategy for improving the welding line flaw detection capability and ensuring that the welded joint leaves a factory without damage is provided, and the effective means for ensuring the railway driving safety is also provided. 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.

SUMMERY OF THE UTILITY MODEL

For overcoming the not enough of prior art, the utility model aims to provide a weld rail base ground rail welded joint welding seam rail end section undercarriage of detecting a flaw for detect a flaw to rail end section, can realize automatic detecting a flaw, be favorable to improving the efficiency and the precision of detecting a flaw.

The utility model discloses a following technical scheme realizes: the utility model provides a weld rail base ground rail welded joint welding seam's rail foot section undercarriage of detecting a flaw, includes the B stand, sets up B mount pad, the B probe mount pad of setting on the B mount pad and the B probe mounting groove of a plurality of setting on the B probe mount pad in B stand both sides, and B probe mounting groove symmetry on two B probe mount pads sets up in the both sides of B stand.

Further, for better realization the utility model discloses, the B mount pad on rotate and install two B leading wheels that are located the rail both sides respectively, the axis of B leading wheel be on a parallel with the direction of height of rail, the minimum interval of two B leading wheels equals the rail end width of rail.

Further, for better realization the utility model discloses, the B stand on be provided with the B drive structure of being connected with the transmission of B mount pad.

Further, for better realization the utility model discloses, B drive structure including setting up B initiative connecting rod and the B driven connecting rod in B mount pad both sides, the both ends of B initiative connecting rod are articulated with B stand, B mount pad respectively, the both ends of B driven connecting rod are articulated with B stand, B mount pad respectively, the pin joint of B initiative connecting rod and B driven connecting rod is four summits of parallelogram, the upper surface level of B mount pad.

Further, for better realization the utility model discloses, the B stand on be provided with B limit baffle, B driven connecting rod on be provided with the B limiting plate that uses with the cooperation of B limit baffle.

Further, for better realization the utility model discloses, the both sides of B stand be provided with two B mounting panels respectively, be provided with the B slide bar between two B mounting panels, slide on the B slide bar and be provided with the B slider, B initiative connecting rod and B driven connecting rod articulate with the B slider respectively.

Further, for better realization the utility model discloses, B mounting panel and B slider between be provided with the spring of suit on the B slide bar.

Further, for better realization the utility model discloses, the top of B leading wheel be provided with the diameter from up leading wheel that reduces gradually down.

Further, for better realization the utility model discloses, the B mounting panel on be provided with the through-hole that is used for installing the B slide bar, the B mounting panel on be provided with the open slot that communicates with the through-hole, be provided with the locking screw who runs through the open slot on the B mounting panel.

Further, for better realization the utility model discloses, B stand below be provided with the B connecting plate.

The beneficial effect that this scheme obtained is: the scheme is favorable for realizing automatic flaw detection of the rail bottom section, and the flaw detection efficiency and precision are improved.

Drawings

FIG. 1 is a schematic perspective view of the present solution;

FIG. 2 is a schematic front view of the present solution;

FIG. 3 is a schematic top view of the present solution;

FIG. 4 is an enlarged view taken at A of FIG. 1;

the device comprises an 81-B upright post, a 82-B mounting plate, an 83-B sliding rod, an 84-B sliding block, an 85-B driven connecting rod, a 86-B driving connecting rod, an 87-B mounting seat, an 88-B probe mounting seat, a 881-B support, a 882B support limiting plate, an 89-B probe mounting groove, a 810-B guide wheel, a 811-B limiting baffle, a 812-B limiting plate and a 813-B connecting plate.

Detailed Description

The present invention will be described in further detail with reference to examples, but the present invention is not limited thereto.

Example 1:

as shown in fig. 1, in the present embodiment, a rail base section flaw detection undercarriage for welding a welding seam of a rail-based ground rail welding joint includes a B-pillar 81, B-mounts 87 disposed on both sides of the B-pillar 81, B-probe mounts 88 disposed on the B-mounts 87, and a plurality of B-probe mounting grooves 89 disposed on the B-probe mounts 88, where the B-probe mounting grooves 89 on two B-probe mounts 88 are symmetrically disposed on both sides of the B-pillar 81.

When the steel rail needs to be detected, the steel rail is placed above the B probe mounting seat 88, and the B probe mounting seat 88 is used for mounting the ultrasonic probe, so that the ultrasonic probe is aligned to the bottom of the steel rail. In the detection process, the B probe mounting seat 88 is contacted with the steel rail, and the ultrasonic probe sends ultrasonic waves to penetrate through the bottom of the steel rail and receives the ultrasonic waves reflected from the section of the rail bottom. The ultrasound probe can be connected to an ultrasound unit in order to send detected signals to the ultrasound unit for processing. The driving scheme moves along the length direction of the steel rail, and the specific part of the steel rail, which needs to be detected, can be detected.

The probe B mounting groove 89 on the probe B mounting seat 88 is opened toward, but is different in width direction. The part that can make solitary ultrasonic sensor can detect the characteristics with this, uses a plurality of ultrasonic sensor can effectively cover the low section's of rail the whole scope and avoid lou examining.

The B probe mounting grooves 89 on the two B probe mounting seats 88 are symmetrically arranged on two sides of the B upright column 81, so that the directions of ultrasonic waves emitted by the ultrasonic probes on two sides of the B upright column 81 are also symmetrical, and the missed detection caused by the fact that some defects are parallel to the ultrasonic wave direction can be avoided.

In this embodiment, the structure that drive B stand 81 and B mount pad 87 integrated into one piece move can realize automaticly, therefore this scheme is favorable to realizing automated inspection to improve the efficiency that detects, the in-process that detects can guarantee that the position of ultrasonic transducer and rail keeps unchangeable, is favorable to improving the precision that detects with this.

The upper surface of the B mounting seat 87 can be provided with an anti-abrasion layer, so that the strength of the upper surface of the B mounting seat 87 is increased, and the abrasion of the B mounting seat 87 caused by the relative movement of the B mounting seat 87 and the steel rail is avoided, thereby being beneficial to ensuring the shape precision of the B mounting seat 87 and preventing the shape precision of the B mounting seat 87 from being damaged to cause the relative position precision of the ultrasonic probe and the steel rail to be poor.

The mounting base B87 can be provided with a plurality of water outlet holes, so that the water outlet holes are communicated with a water source, water is supplied to the steel rail through the water outlet holes during detection, and the water is used as a coupling agent for detection. Therefore, the structure can be simplified, an additional water supply structure is avoided, and water supplied through the water outlet holes can be distributed between the B mounting seat 87 and the steel rail to meet the use requirement.

A plurality of projections can be provided on the upper surface of the B mount 87 so that the projections contact the rail, and a small gap is formed between the B mount 87 and the rail for water supply and circulation.

Example 2:

as shown in fig. 1 and fig. 3, in the present embodiment, on the basis of the above embodiment, two B guide wheels 810 respectively located at two sides of the rail are rotatably mounted on the B mounting seat 87, the axis of the B guide wheel 810 is parallel to the height direction of the rail, and the minimum distance between the two B guide wheels 810 is equal to the width of the rail bottom of the rail.

The guide wheels 810 can be clamped on two sides of the steel rail, so that when the mounting seat 87B and the steel rail move relatively, the ultrasonic probe can be always kept at a designed position, and the detection precision is prevented from being influenced.

Example 3:

on the basis of the above embodiments, in the present embodiment, the B pillar 81 is provided with a B driving structure in transmission connection with the B mounting seat 87. The driving structure is mainly used for driving the mounting base B87 to move in the vertical direction relative to the steel rail, so that the interference on the mounting process of the steel rail to be detected in the early stage is avoided.

As shown in fig. 1, 2 and 3, the B driving structure includes a B driving link 86 and a B driven link 85 disposed at two sides of a B mounting seat 87, two ends of the B driving link 86 are respectively hinged to a B upright 81 and the B mounting seat 87, two ends of the B driven link 85 are respectively hinged to the B upright 81 and the B mounting seat 87, hinge points of the B driving link 86 and the B driven link 85 are four vertices of a parallelogram, and an upper surface of the B mounting seat 87 is horizontal. The B mounting seat 87 can be driven to move by driving the B driving connecting rod 86 to rotate around the hinge point on the B upright post 81, and the upper surface of the B mounting seat 87 can be always kept horizontal due to the fact that the hinge point of the B driving connecting rod 86 and the hinge point of the B driven connecting rod 85 are four vertexes of a parallelogram, so that subsequent mounting and use are facilitated.

In this embodiment, the B upright 81 is provided with a B limit baffle 811, and the B driven link 85 is provided with a B limit plate 812 used in cooperation with the B limit baffle 811. The B stopper plate 811 can block the movement of the B stopper plate 812, and thereby limit the movable range of the B mount 87. The mounting base B87 is prevented from colliding with the steel rail under the action of driving force to be damaged.

Example 4:

on the basis of the above embodiment, in the present embodiment, two B mounting plates 82 are respectively disposed on two sides of the B upright 81, a B sliding rod 83 is disposed between the two B mounting plates 82, a B sliding block 84 is slidably disposed on the B sliding rod 83, and a B driving link 86 and a B driven link 85 are respectively hinged to the B sliding block 84. Thus, the B mount 87 can be moved along the B slide bar 83 as necessary to adjust the relative position of the B mount 87 and the rail, thereby aligning and mounting the rail with the B guide wheel 810.

In this embodiment, a spring sleeved on the B sliding rod 83 is disposed between the B mounting plate 82 and the B sliding block 84. Utilize the spring can play certain limiting displacement to finely tune the relative position of B mount pad 87 and rail, can reset B mount pad 87 after detecting the structure, avoid B mount pad 87, B slider 84 to collide with other structures and damage, warp.

In this embodiment, the top of the B guide wheel 810 is provided with a guide wheel whose diameter gradually decreases from bottom to top. The guide wheels can play a role in guiding, when the B guide wheel 810 is in contact with the steel rail, the guide wheels of the B guide wheel 810 are firstly in contact with the steel rail, and the force applied by the steel rail to the B guide wheel 810 can compress the spring to adaptively adjust the relative position of the B mounting seat 87 and the steel rail, so that quick adaptive adjustment can be realized.

The B guide wheel 810 can be hinged with the B mounting seat 87, and a torsion spring is arranged between the B guide wheel 810 and the B mounting seat 87, so that the B guide wheel 810 can be used for self-adaptively adjusting the relative position of the B guide wheel 810 and the B mounting seat 87.

In this embodiment, the B mounting plate 82 is provided with a through hole for mounting the B sliding rod 83, the B mounting plate 82 is provided with an open slot communicated with the through hole, and the B mounting plate 82 is provided with a locking screw penetrating through the open slot. Through setting up the open slot, can make the relative extrusion of part of B mounting panel 82 open slot both sides, utilize locking screw locking, can increase the joint strength of B slide bar 83 and B mounting panel 82, prevent that B slide bar 83 from taking off.

Example 5:

on the basis of the above embodiments, in the present embodiment, a B connecting plate 813 is disposed below the B pillar 81. The B-link plate 813 is used to facilitate connection to other structures.

Example 6:

as shown in fig. 1 and 4, on the basis of the above embodiments, in the present embodiment, two B brackets 881 are disposed on the B mount 87, and the B probe mount 88 is disposed between the two B brackets 881, so that the B probe mount 88 is rotatably connected with the B brackets 881, and after the B probe mount 88 contacts with the steel rail, the angle between the B probe mount 88 and the steel rail can be adaptively adjusted.

The B probe mounting seat 88 is connected with the B bracket 881 in a sliding way, the sliding direction is vertical to the bottom of the steel rail, and the positions of the B probe mounting seat 88 and the steel rail can be adjusted in a self-adaptive manner after the B probe mounting seat 88 is contacted with the steel rail.

Set up B support limiting plate 882 on the face that B support 881 is close to the rail, after B support limiting plate 882 and rail contact, the rail no longer makes B probe mount pad 88 take place the displacement to the effort of B probe mount pad 88 to this can avoid B probe mount pad 88 to receive the extrusion and damage.

In this embodiment, other undescribed contents are the same as those in the above embodiment, and thus are not described again.

The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the technical matters of the present invention all fall into the protection scope of the present invention to any simple modification and equivalent change of the above embodiments.

Claims

1. The utility model provides a weld rail base ground rail welded joint welding seam's rail end section undercarriage of detecting a flaw which characterized in that: including B stand (81), set up B mount pad (87) in B stand (81) both sides, set up B probe mount pad (88) and a plurality of B probe mounting groove (89) of setting on B probe mount pad (88) on B mount pad (87), B probe mounting groove (89) symmetry on two B probe mount pads (88) sets up in the both sides of B stand (81).

2. The undercarriage for flaw detection of the rail bottom section of the welding joint of the rail-based ground steel rail according to claim 1, wherein: the mounting base B (87) is rotatably provided with two guide wheels B (810) which are respectively positioned on two sides of the steel rail, the axis of the guide wheel B (810) is parallel to the height direction of the steel rail, and the minimum distance between the two guide wheels B (810) is equal to the width of the rail bottom of the steel rail.

3. The undercarriage for inspecting a rail foot section of a weld joint of a rail-based ground rail according to claim 1 or 2, wherein: and a B driving structure in transmission connection with the B mounting seat (87) is arranged on the B upright post (81).

4. The undercarriage for detecting flaw of rail bottom section of welding joint of rail-based ground rail according to claim 3, wherein: the B driving structure comprises a B driving connecting rod (86) and a B driven connecting rod (85) which are arranged on two sides of a B mounting seat (87), two ends of the B driving connecting rod (86) are hinged to a B upright post (81) and the B mounting seat (87) respectively, two ends of the B driven connecting rod (85) are hinged to the B upright post (81) and the B mounting seat (87) respectively, hinged points of the B driving connecting rod (86) and the B driven connecting rod (85) are four vertexes of a parallelogram, and the upper surface of the B mounting seat (87) is horizontal.

5. The undercarriage for detecting flaw of rail bottom section of welding joint of rail-based ground rail according to claim 4, wherein: a B limit baffle (811) is arranged on the B upright post (81), and a B limit plate (812) matched with the B limit baffle (811) for use is arranged on the B driven connecting rod (85).

6. A rail foot section flaw detection undercarriage for welding a rail-based ground rail weld joint according to claim 4 or 5, wherein: the two sides of the B upright post (81) are respectively provided with two B mounting plates (82), a B sliding rod (83) is arranged between the two B mounting plates (82), a B sliding block (84) is arranged on the B sliding rod (83) in a sliding mode, and a B driving connecting rod (86) and a B driven connecting rod (85) are respectively hinged to the B sliding block (84).

7. The undercarriage for detecting flaw of rail bottom section of welding joint of rail-based ground rail according to claim 6, wherein: and a spring sleeved on the B sliding rod (83) is arranged between the B mounting plate (82) and the B sliding block (84).

8. The undercarriage for detecting flaw of rail bottom section of welding joint of rail-based ground rail according to claim 2, wherein: the top of the B guide wheel (810) is provided with a guide wheel with the diameter gradually reduced from bottom to top.

9. The undercarriage for inspecting a rail foot section of a weld joint of a rail-based ground rail according to claim 7, wherein: b mounting panel (82) on be provided with the through-hole that is used for installing B slide bar (83), B mounting panel (82) on be provided with the open slot that communicates with the through-hole, be provided with the locking screw who runs through the open slot on B mounting panel (82).

10. A rail foot section flaw detection undercarriage for welding a rail-based ground rail weld joint according to any one of claims 1, 2, 4, 5, 7, 8 and 9, wherein: a B connecting plate (813) is arranged below the B upright post (81).