Magnetic type steel rail side edge automatic flaw detection auxiliary tool

Abstract

The utility model belongs to the technical field of track flaw detection devices, and particularly relates to a magnetic type steel rail side edge automatic flaw detection auxiliary tool which comprises a probe support and two rectangular sliding rods, a main gear and an auxiliary gear are arranged at the two ends of the two rectangular sliding rods, and an inner tooth conveying belt is meshed between the main gear and the auxiliary gear; a control box is arranged on one side of the rectangular sliding rod, a control module and a driving motor are arranged in the control box, and an output shaft of the driving motor drives the driving gear to rotate through an output shaft converter; and the probe support horizontally moves along the rectangular sliding rod. Compared with the prior art, the auxiliary device has the advantages that the auxiliary device is adsorbed on the side surface of the steel rail through the powerful magnet, the probe support is driven to move in the horizontal direction by the transmission of the internal tooth transmission belt, and the probe and the detection surface of the steel rail keep certain coupling strength by arranging the spring piece, so that flaw detection data acquisition is ensured; and a worker can complete the observation instrument to complete flaw checking in the flaw detection process, so that the working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of rail flaw detection devices, and in particular relates to a magnetic-attraction type rail side automatic flaw detection auxiliary tool. Background Art

[0002] Digital universal ultrasonic flaw detectors are widely applicable, highly efficient and low-priced, with stable performance and simple operation. They are mainly used in nondestructive flaw detection operations of mobile or high-altitude equipment in the fields of metal equipment aviation, metal pressure capacitors, engineering power, and railway rail transit maintenance industries. By performing ultrasonic flaw detection and scanning on the rails, it is possible to determine whether there is structural unevenness in the rails, as well as the location and extent of the problem, and monitor the development. For lines with long operating time, nuclear damage to the rail head is the main cause of rail breakage. The transverse fatigue crack of the rail head is commonly known as the rail head nuclear damage, or nuclear damage for short. It means that under the repeated action of the train load, during the operation of the train, the rail head directly contacts the train load, and extremely complex stress states and stress distributions will be generated inside. Even small cracks can easily expand laterally and develop into nuclear damage, resulting in insufficient strength of the steel around the nuclear damage to resist the stress under the wheel load, and the rail breaks suddenly. The internal nuclear damage of the rail head poses a huge threat to train operation. During the inspection process, due to the long-term operation of the line, rail core damage is prone to occur. In order to ensure the quality of flaw detection at the welding joint position and the requirements of the turnout flaw detection operation, the staff needs to hold the ultrasonic flaw detector and move it continuously. During the detection process, the ultrasonic flaw detector is usually placed on the ground and the probe is held for detection. Especially when the side flaw detection of the rail is scanned and the rail head is inspected manually, the probe is prone to slide and deflection, resulting in a large deflection error. Improper operation causes damage to the probe, affecting the service life of the ultrasonic flaw detector probe. In addition, the manual operation error of the probe will interfere with the detection effect. In addition, the instrument must be held by hand, which is easy to cause the instrument to fall, affecting the movement of the ultrasonic flaw detector. At the same time, the manual flaw detection at the turnout position and the side flaw detection at the turnout position cause large errors caused by human objective factors. The magnetic rail side automatic flaw detection auxiliary tool effectively reduces time, reduces the labor intensity of night operations, improves the detection quality, and improves the operation efficiency. Therefore, it is necessary to study the auxiliary device for automatic scanning and flaw detection of the side flaw detection of the rail turnout head. Utility Model Content

[0003] The utility model aims to provide a magnetic rail side automatic flaw detection auxiliary tool to solve the problem that the existing manual flaw detection process is easily affected by human factors, resulting in errors and image data collection; at the same time, observation and operation are required simultaneously during the flaw detection process, and damage inspection cannot be carried out using a single observation instrument.

[0004] The utility model is realized through the following technical scheme: a magnetic suction type rail side automatic flaw detection auxiliary tool, including a probe support, a probe is installed at the bottom of the probe support, including two parallel rectangular slide rods, the rectangular slide rod is a European standard 1640 guide rail, the two ends of the two rectangular slide rods are respectively fixed by connecting supports, the middle position of the connecting support is provided with an insertion shaft hole, the connecting supports at both ends can be rotatably connected to the main gear and the sub-gear, the basis of the main gear and the sub-gear is a two-sided flat gear pulley, the bottom central axis of the main gear and the sub-gear is provided with an insertion shaft matching the insertion shaft hole, and the diameter of the insertion shaft hole is 8mm; a driving gear with the same central axis as the main gear is provided above the main gear, and an internal tooth transmission belt is meshed between the main gear and the sub-gear;

[0005] A control box is provided on one side of the rectangular slide rod where the main gear is arranged. A plurality of strong magnets are fixed on the side wall of the control box. A strong neodymium magnet with a diameter of 20 mm is selected. A hole is opened in the middle and a threaded screw is fixed on the side wall of the control box to ensure strong adsorption, so that the control box can be stably adsorbed on the top or side of the rail.

[0006] The control box is provided with a control module and a drive motor, and the output shaft of the drive motor drives the drive gear to rotate through the output shaft converter; the control module is used to control the automatic flaw detector to manually confirm the problem and other functions of the control system, including a control circuit, the motor is connected according to the instrument series circuit, the automatic control scanning module and the DC brush speed regulator are connected in parallel, the DC brush reduction motor, that is, the drive motor, is controlled, and the drive gear is driven to rotate through the output shaft converter to realize automatic scanning and manual variable speed control scanning functions;

[0007] The probe support has symmetrically arranged U-shaped slots matching the rectangular slide rod on both sides, and the toothed clamping blocks and the flat clamping blocks are respectively fixed at the height of the inner tooth transmission belt on both sides of the probe support, so that the toothed clamping blocks are meshed with the inner tooth transmission belt, and the flat clamping blocks are gap-matched with the transmission belt.

[0008] Specifically, the probe support includes a supporting cylinder and a mounting head slidably connected to the supporting cylinder. The bottom of the probe support is connected to the mounting head through a spring member arranged outside the supporting cylinder. The mounting head is used to connect the probe so that the probe can be extended and retracted up and down. During the flaw detection process, the spring member maintains a certain coupling force with the rail detection surface, thereby ensuring that the ultrasonic waveform received during the flaw detection process is stable and avoiding longitudinal angle deviation of the probe. A wiring hole connected to the supporting cylinder is provided above the probe support to facilitate the connection of a high-frequency function docking cable of a universal flaw detector.

[0009] Specifically, the meshing teeth of the main gear and the auxiliary gear are trapezoidal teeth, with 18 teeth, an inner hole diameter of 8mm, an outer diameter of 28mm, and a groove width of 100mm, to ensure uniform force when the main gear and the auxiliary gear are transmitted, and to ensure stable reception of ultrasonic information when transmitting and receiving ultrasonic waves for automatic scanning.

[0010] Specifically, a strong magnet is arranged at the bottom of the connecting support, and a strong neodymium magnet material is selected, which can be adsorbed on the surface of the rail to ensure the overall stability; the connecting support can clamp the rectangular sliding rod to improve the stability of the probe support when sliding.

[0011] The control box surface is provided with a display screen and multiple control switches. The display screen is used to display information such as the automatic scanning cycle. The control switches include a power switch, an automatic control scanning module branch switch, a DC brushless speed regulator branch switch, and an automatic forward and reverse control switch, which are used to adjust the automatic flaw detection speed and the overall frequency.

[0012] When in use, the device as a whole can be adsorbed on the side of the rail through a strong magnet, and the drive motor is started to act on the drive gear, so that the main gear and the auxiliary gear drive the internal tooth transmission belt. The probe support moves along the rectangular slide under the action of the toothed clamping block, and the automatic flaw detection is completed during the movement. It is convenient for the staff to observe the instrument and check for damage during the flaw detection process;

[0013] The control box can be used to adjust the flaw detection speed, overall frequency or forward and reverse rotation of the drive motor. Automatic scanning or manual scanning can also be selected according to actual needs.

[0014] Compared with the prior art, the utility model has the following advantages: the auxiliary device is adsorbed on the side of the rail by a strong magnet, the internal tooth transmission belt drives the probe support to move in the horizontal direction, and the spring member is provided to maintain a certain coupling force between the probe and the rail detection surface to ensure the collection of flaw detection data; the staff can simultaneously complete the damage investigation with the observation instrument during the flaw detection process, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 yes Figure 1 The middle part is an enlarged structural diagram.

[0017] Figure 3 It is a schematic diagram of the structure of a meshing internal tooth transmission belt.

[0018] Figure 4 It is a structural diagram of the connecting support.

[0019] Figure 5 It is a structural schematic diagram of the probe support.

[0020] Figure 6 It is a schematic structural diagram of a toothed clamping block.

[0021] Figure 7 It is a schematic structural diagram of a flat clamping block.

[0022] Figure 8 It is a schematic structural diagram of a control box.

[0023] Fig. 9 It is a schematic diagram of a control circuit.

[0024] Among them, 1 - control box, 11 - control switch, 12 - powerful magnet, 13 - charging jack, 2 - probe support, 21 - U-shaped card slot, 22 - support cylinder, 23 - wiring hole, 24 - mounting head, 25 - spring member, 26 - toothed clamping block, 27 - flat clamping block, 3 - internal tooth conveyor belt, 31 - main gear, 32 - sub-gear, 4 - rectangular slide rod, 41 - connecting support, 411 - rectangular card slot, 412 - powerful magnet, 413 - insertion shaft hole, 6 - output shaft converter, 61 - driving gear. Specific embodiments

[0025] The present utility model will be further described below with reference to the accompanying drawings.

[0026] The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model. Embodiment 1

[0027] As Figure 1-8 shown in, the magnetic adsorption type auxiliary tool for automatic inspection of the side of the steel rail includes a probe support 2 and two parallel rectangular slide rods 4. The rectangular slide rod 4 is a European standard 1640 type guide rail. The two ends of the two rectangular slide rods 4 are respectively fixed by a connecting support 41. An insertion shaft hole 413 is provided in the middle position of the connecting support 41. Rectangular card slots 411 matching the rectangular slide rod 4 are provided on both sides of the connecting support 41. A powerful magnet 412 is arranged at the bottom of the connecting support. The powerful neodymium-iron-boron magnet material is selected and can be adsorbed on the surface of the steel rail;

[0028] The connecting supports 41 at both ends can be rotatably connected to the main gear 31 and the sub-gear 32 respectively. The base of the main gear 31 and the sub-gear 32 is a double-sided flat gear pulley. The meshing teeth of the main gear 31 and the sub-gear 32 are trapezoidal teeth, with 18 teeth, an inner hole diameter of 8mm, a tooth outer diameter of 28mm, and a groove width of 100mm, so as to ensure that the main gear 31 and the sub-gear 32 have uniform force during transmission, and ensure stable reception of ultrasonic information when transmitting and receiving ultrasonic waves for automatic scanning;

[0029] The central axis of the bottom of the main gear 31 and the auxiliary gear 32 is provided with an insertion shaft 311 matching the insertion shaft hole 413, and the diameter of the insertion shaft hole 413 is 8 mm; a driving gear 61 coaxial with the main gear 31 is provided above the main gear 31, and an internal tooth transmission belt 3 is meshed between the main gear 31 and the auxiliary gear 32;

[0030] The probe is installed at the bottom of the probe support 2, and the U-shaped slots 21 matching the rectangular slide rod 4 are symmetrically arranged on both sides of the probe support 2. The toothed clamping blocks 26 and the flat clamping blocks 27 are respectively fixed at the positions at the height of the inner tooth transmission belt 3 on both sides of the probe support 2, so that the toothed clamping blocks 26 are meshed with the inner tooth transmission belt 3, and the flat clamping blocks 27 are gap-matched with the transmission belt; the probe support 2 includes a support cylinder 22 and a mounting head 24 slidably connected to the support cylinder 22. The bottom of the probe support 2 is connected to the mounting head 24 through a spring member 25 arranged outside the support cylinder 22. The mounting head 24 is used to connect the probe so that the probe can be extended and retracted up and down. During the flaw detection process, the spring member 25 keeps a certain coupling force between the probe and the rail detection surface, ensuring that the ultrasonic waveform received during the flaw detection process is stable and avoiding the longitudinal angle deviation of the probe; a wiring hole 23 connected to the support cylinder 22 is provided above the probe support 2, which is convenient for connecting the high-frequency function docking cable of the universal flaw detector;

[0031] A control box 1 is provided on one side of the rectangular slide rod 4 where the main gear 31 is provided. A display screen (not shown), a plurality of control switches 11 and a charging socket 13 are provided on the surface of the control box 1. The display screen is used to display information such as the automatic scanning cycle. The control switch 11 includes a power switch, an automatic control scanning module branch switch, a DC brushless speed regulator branch switch, and an automatic forward and reverse control switch. A plurality of strong magnets 12 are fixed to the side wall of the control box 1 (on the opposite side where the control switch is provided). A strong neodymium rubidium magnet with a diameter of 20 mm is selected, with a hole in the middle, and is fixed to the side wall of the control box with threaded screws (which is a conventional technology in the art) to ensure strong adsorption, so that the control box 1 can be stably adsorbed on the top or side of the rail.

[0032] The control box 1 is provided with a control module, a lithium battery pack and a drive motor, the output shaft of the drive motor drives the drive gear 61 to rotate through the output shaft converter 6; the control module is used to control the automatic flaw detector to manually confirm the problem and other functions of the control system, including a control circuit, such as Fig. 9 As shown, the motor is connected in series according to the instrument circuit, and the automatic control scanning module and the DC brush speed regulator are connected in parallel to control the DC brush reduction motor, that is, the drive motor, and then drive the drive gear to rotate through the output shaft converter 6 to realize automatic scanning and manual variable speed control scanning functions;

[0033] When in use, the device as a whole can be adsorbed on the side of the rail by a strong magnet, and the driving motor is started to act on the driving gear 61, so that the main gear 31 and the auxiliary gear 32 drive the internal tooth transmission belt 3 to transmit, and the probe support 2 moves along the rectangular slide rod 4 under the action of the toothed clamping block 26, and the automatic flaw detection is completed during the movement, so that the staff can observe the instrument and check for damage during the flaw detection process;

[0034] The control box can be used to adjust the flaw detection speed, overall frequency or forward and reverse rotation of the drive motor. Automatic scanning or manual scanning can also be selected according to actual needs.

[0035] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0036] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A magnetic rail side automatic flaw detection auxiliary tool, comprising a probe support, a probe is installed at the bottom of the probe support, characterized in that: It comprises two parallel rectangular slides, the two ends of which are fixed by connecting supports, the middle position of the connecting supports is provided with a plug-in shaft hole, the connecting supports at both ends are rotatably connected to the main gear and the auxiliary gear, the central axis parts at the bottom of the main gear and the auxiliary gear are provided with plug-in shafts matching the plug-in shaft holes; a driving gear with the same central axis as the main gear is provided above the main gear, and an internal tooth transmission belt is meshed between the main gear and the auxiliary gear; A control box is provided on one side of the rectangular slide rod where the main gear is arranged, and a plurality of strong magnets are fixed on the side wall of the control box; a control module and a drive motor are provided in the control box, and the output shaft of the drive motor drives the drive gear to rotate through an output shaft converter; The probe support has symmetrically arranged U-shaped slots matching the rectangular slide rod on both sides, and the toothed clamping blocks and the flat clamping blocks are respectively fixed at the height of the inner tooth transmission belt on both sides of the probe support, so that the toothed clamping blocks are meshed with the inner tooth transmission belt, and the flat clamping blocks are gap-matched with the transmission belt.

2. A magnetic rail side automatic flaw detection auxiliary tool as claimed in claim 1, characterized in that: The probe support includes a supporting cylinder and a mounting head slidably connected to the supporting cylinder. The bottom of the probe support is connected to the mounting head through a spring member arranged outside the supporting cylinder, and the mounting head is used to connect the probe; a wiring hole connected to the supporting cylinder is provided above the probe support.

3. A magnetic rail side automatic flaw detection auxiliary tool as claimed in claim 1, characterized in that: The meshing teeth of the main gear and the auxiliary gear are trapezoidal teeth.

4. A magnetic rail side automatic flaw detection auxiliary tool as claimed in claim 1, characterized in that: A strong magnet is arranged at the bottom of the connecting support.

5. A magnetic rail side automatic flaw detection auxiliary tool as claimed in claim 1, characterized in that: A display screen and a plurality of control switches are arranged on the surface of the control box.

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