Mobile flaw detector servo drive centering device

FIELD: transport.

SUBSTANCE: invention relates to railroad transport. Servo drive centering device of mobile flaw detector along rail lengthwise axis comprises detectors furnished with self-centering device. The latter is made up of permanent magnets arranged on faces of every detector on crosswise displacement carriages articulated with detectors and arranged on guide bars rigidly coupled with load bearing bar of servo drive system suspension.

EFFECT: higher quality of rail state control, possibility for flaw detection at high speeds.

4 dwg

 

The claimed technical device relates to the field of rail transport, in particular to the special mobile assets equipped with instrumentation to check the status of the path, and is intended to ensure the quality of rail flaw detection at high velocities of the mobile detector.

A device truck carrier, which is made of two independent single axle trucks, the frame of each single axle truck connected parallelogram mechanism with a common frame, and the witness is in the witness wheels, dont forget the witness of the opposite wheels single axle trucks hinged longitudinal beams with the mechanism of lifting-and lowering mechanism, correction, diagnostic device, wherein the longitudinal beams fixed with the possibility of angular and axial movement uniaxial trucks, this site compensate for the offset axis of the bogie relative to each other is, for example, a spherical joint, which is fixed to the linear bearing in the inner cavity of which set the end of the longitudinal beam, and a correction mechanism offset seekers associated with sensor movement control servo wheels (patent RU No. 2309077; published 27.10.2007; IPC B61K 9/08; "Cart-carrier").

However the com of the known device is reduce the quality of diagnosis in high-speed trolley-carrier mobile detector, as well as the need for time-consuming maintenance.

For the prototype of the proposed technical solutions adopted centering device pleading look mobile detector, comprising driving the truck, on the transverse frame which is installed on the drive movement of the rolling element contact elements pivotally connected to the guardrails witness skis and located between the guardrails, the ends of which are located between the paddle wheels wheelset undercarriage, the device is equipped with an intermediate link and a lever, and a movable link contact elements mounted on the intermediate element by means of a hinged connection, the axis of rotation which is parallel to the axis of the hinge connecting the movable link with guardrails, and levers connected to the frame of the undercarriage and guardrails through hinge joints axes of rotation which are parallel to the axis of the hinge connecting the movable link with guardrails, and each hinge securing the lever to the frame of the undercarriage posted on turning around the horizontal axis of the housing, the lever is located on the axis of this hinge can move along the axis in a linear guide parallel to the axis of the hinge mounting of rolling element to an intermediate element made in the form of a lever mounted by hinge soy is inane on the frame of the undercarriage, in addition, the movable link is made with adjustable stops (the patent for useful model RU # 38708; published 10.07.2004; IPC B61K 9/08; "centering Device pleading look mobile detector").

The disadvantages of the prototype is the complexity of the design and the associated low reliability of the centering device.

With increasing speed of the mobile detector known device does not provide the necessary quality control devices and the reliability of the performed measurements, which is due primarily to the necessity of a witness skis, which requires high complexity of its installation and operation.

The complexity of the use of the witness skis are expressed also in the issue of passing turnouts, possible deviations in the dynamic impacts, including impacts, the need for a dynamic contact with a dirty surface of the rail, which significantly degrades the quality control process.

At high speeds of movement of the mobile detector the device performance alignment is significantly reduced without providing, in particular, the required accuracy and performance, which leads to lack of control of individual sections of the rail, not subjected to quality testing.

Accelerated wear of tordos the face inserts, installed on the witness ski, reduces the accuracy of centrifuge pleading look of the system relative to the longitudinal axis of the rail.

The objective of this technical solution is to simplify the design and improve the quality condition monitoring of railway track at high speed mobile detector.

The problem is solved due to the fact that the centering device tracking system mobile detector relative to the longitudinal axis of the rail seekers equipped with a centering device, made in the form of permanent magnets placed end sides of each selector on carriages lateral movement, kinematically connected with seekers and installed on the guide rods rigidly connected with the carrier beam suspension tracking system.

The presence of the centering device is necessary to ensure seeker optimum position above the rail in the process of monitoring, which allows to improve the quality testing to improve the performance and reliability of the device as a whole.

Performing a centering device in the form of permanent magnets placed end sides of each selector, greatly simplifies the design, allowing you to eliminate the need for bulky difficult drive for correction is ogene seeker and the need for its regulation and adjustment tools.

The placement of the permanent magnets of the device to self-align with the end sides of the finder so that in the initial position of their longitudinal axis and the longitudinal axis of the finder are in the same vertical plane with the longitudinal axis of the rail, provides for the creation between the magnets and the head rail by magnetic forces, which, due to the commitment of permanent magnets to the original position, creating a magnetic return force when the deviation of the seeker from the original optimum position, thereby providing the effect of centering the seeker.

The presence of carriages mounted on the guide rods associated with the carrier beam suspension, allows lateral movement relative to the longitudinal axis of the rail.

The presence of kinematic link finder with carriages lateral movement provides stabilization of the position of seeker, guiding the seeker of the offset provisions in the original, due to the recoil strength of the magnetic field of permanent magnets.

The process of centering the operating position of the selector increases the efficiency of the welding research by increasing their credibility with a simultaneous increase in the moving speed of the mobile detector.

The proposed device is self-centering allows you to refuse the t of the contact elements of the track rail in the form of witness skis or witness wheels carrying out non-contact centering seeker, providing a significant advantage of this device in the movement and overcoming turnouts at high speeds.

The presence of the distinguishing features of the claimed technical solution allows to make a conclusion about its compliance with the conditions of patentability of "novelty."

The condition of patentability "industrial applicability" is confirmed on the example of a specific implementation.

The invention is illustrated with technical drawings, on which:

figure 1 - shows a General view finder device with self-centering;

figure 2 - side view of figure 1;

figure 3 - General view of the device in a perspective view;

figure 4 is a bottom view of the end portion of the finder and the centering device in a perspective view.

Figure 1 shows the supporting beam 1 servo system for mobile detector, which by means of brackets 2 are rigidly fixed on the trolley mobile detector (not shown).

The tracking system mobile detector contains seekers 3, which establishes the transducers monitoring devices and are in the process of testing moved over the rolling surface of the rail head 9.

On both sides of the front parts finder 3 posted by permanent magnets 4, attached by means of brackets 5 the levers 6 on the carriage 7 (2) lateral movement. The carriage 7 is installed on the guide rods 8 (figure 4), with the possibility of movement in a direction transverse to the longitudinal axis of the rail 9 (Fig 1).

Finder 3 is suspended on the rods 10 of the power cylinder 11 of the vertical movement mechanism of the finder 3.

The power cylinder 11 mounted on the carriage 7, forming a kinematic relationship seeker 3 with the carriage 7 for its lateral movement.

The guide rod 8 to move the carriage 7 spaced from each other by a distance which provides accommodation and rigid fastening on the carriage 7 of the power cylinder 11, the free end of the rod 10 which is connected with one end of the finder 3, with a fixed converters.

The centering device is set so that the initial stable position before operating the longitudinal axis of the permanent magnets 4 and the longitudinal axis a pleading look beam 3 is placed in the same vertical plane with the longitudinal axis of the rail. In this optimal position transducers monitoring devices ensure maximum reliability of results.

To get started permanent magnets 4 on the bracket 5 is turned relative to the levers 6, transferring them from the top of the transport position in the lower working position, establishing permanent magnets 4 on the rail 9 by small the gap, determined by the magnetic field between them.

The operation of the centering of the servo system is that in the process of moving a mobile detector, placed on a track vehicle, when the external dynamic pressure shift pleading look system from its original position, the strength of the magnetic field existing between the rail 9 and the permanent magnets 4, force magnets 4 to return to its original position relative to the longitudinal axis of the rail 9.

Rushing from the shifted position in the source, the permanent magnets 4 carry the carriage 7, which, easily moving along the guide rods 8 and being in kinematic connection with the finder 3, return seekers 3 of the offset in the original optimum position, thereby ensuring their centering.

In permanent magnets 4 under the action of magnetic fields arise recoil force that is always directed towards the original equilibrium and depends on the magnitude of displacement of the seeker and the magnetic-eld strength, i.e. acts peculiar magnetic spring device, centering.

Lateral movement of the selector 3 in the process provide a carriage 7 which, being in kinematic connection with the finder 3, allow him to return from a biased Ref is the initial optimal position by moving the carriage 7 along the guide rods 8.

Rod 8 is rigidly fixed with their ends in bearing beam 1 is mounted by means of brackets 2 on the trolley mobile detector, which in the process control moves along the track.

The power cylinder 11 vertical movement of the finder 3, mounted on the carriage 7 and its associated rod 10 with the finder 3, provides the kinematic relationship of the seeker 3 with the carriage 7, the transverse movement of which causes the strength of the magnetic field of the permanent magnet 4, the recoil forces which are constantly striving to bring back the seeker 3 from position offset in the original optimal position of the control.

The magnetic forces between the rail and the magnets are permanent and do not require additional devices, drives and external control, thereby providing a continuous process of self-centering seekers in the process of implementation of the inspection of rails.

Return the strength of the magnetic field does not depend on the influence of external factors such as temperature, humidity, dirt and ice on the surface of the rail, which distinguishes the considered device from contact devices centering a pleading look systems, largely dependent on external factors.

Testing of these units are in low temperatures, ice and high snow cover area under the adopted his quality work, in contrast to the results of the use in similar conditions known analogues.

Permanent magnets that do not change their performance within their service life, ensure the stable operation of the centering seeker and provide high efficiency testing at high speeds of movement of the mobile detector.

The centering device tracking system mobile detector relative to the longitudinal axis of the rail, characterized in that the seekers equipped with a centering device, made in the form of permanent magnets placed end sides of each selector on carriages lateral movement, kinematically connected with seekers and installed on the guide rods rigidly connected with the carrier beam suspension tracking system.



 

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3 dwg

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