JP6141700B2 - Rail lower jaw cleaning device - Google Patents

Description

  The present invention is for polishing and cleaning the surface of the lower part of the rail of the railway rail (the flaw detection surface) with which the probe is brought into contact prior to the inspection when performing an ultrasonic flaw inspection on the head of the rail. Relating to the device.

  Railroad rail is a steel product that is classified as a type of steel bar to support the weight of the railroad vehicle and to guide the railroad vehicle to the desired course, and its cross section has a special shape. Are known.

  That is, as shown in FIG. 8, a rail (hereinafter simply referred to as a rail) R is composed of three parts, a head A, an abdomen B, and a bottom C. And left and right side portions As and As, and further, left and right lower jaw portions (upper neck portions) Aj and Aj that connect the head A and the abdomen B.

Further, as shown in FIG. 9, the tread surface Wt of the wheel W in the railway vehicle abuts on the top portion At of the head A of the rail R, and one side (inward side of the gauge) of the head A is side portion. The flange Wf of the wheel W comes into contact with As.
Here, on the head A of the rail R described above, there is a possibility that damage such as lateral cracks may occur inside due to the load of the traveling railway vehicle acting on the rail R. For safe operation of the railway vehicle, Along with the early detection of the damage, appropriate treatment for the damage is essential.

Conventionally, ultrasonic flaw detection has been employed as a means for detecting damage occurring in the head A of the rail R. As one example, one of the heads A of the rail R (left side in the figure) is used as an example. ) With the transmitting probe Pe in contact with the lower chin Aj of the head and the receiving probe Pr with the lower chin Aj on the other (right side in the figure), and the top of the head A from the probe Pe. By providing ultrasonic waves toward At and analyzing the echoes received by the probe Pr, it is possible to provide a flaw detection method and apparatus that are particularly effective for finding damages occurring near the parietal region At. (For example, see Patent Document 1 and Patent Document 2).
In addition, the said ultrasonic wave may enter from the right side in FIG. 10, and may be the structure received on the left side.

JP 2009-236808 A JP 2013-036770 A

By the way, when performing the ultrasonic flaw inspection as described above, the lower jaw portions Aj and Aj of the rail R with which the pair of probes Pe and Pr are brought into contact with each other usually occur on the surface because they are not subjected to maintenance. It is extremely dirty due to rust and attached oil.
When the probes Pe and Pr are brought into contact with the dirty lower jaw portions Aj and Aj in this manner, the probe Pe can be moved into the rail R even when a contact medium such as glycerin is interposed. Incidence of ultrasonic waves and reception of ultrasonic waves from the inside of the rail R to the probe Pr are hindered, thereby causing inconvenience that it is difficult to perform ultrasonic flaw detection inspection.

  Therefore, when conducting an ultrasonic flaw inspection, a wire brush or a hand-held disc sander is used prior to the inspection to remove dirt such as rust and oil from the surface of the lower jaw Aj, Aj (flaw detection surface) on the rail R. Cleaning work to remove is necessary.

  However, since the laid rail R is at a low position, cleaning work using a wire brush or the like forces the worker to take an unreasonable posture such as a middle waist and the surface of the lower jaws Aj and Aj. Since it faces downward, it is difficult to clean it by properly applying a wire brush or the like, and thus it is difficult to efficiently perform the cleaning work on the lower jaws Aj and Aj.

  In view of the above situation, the object of the present invention is to provide a rail that can easily and reliably polish and clean the surface of the lower jaw of the rail, which is a flaw detection surface, without forcing an operator to take an unreasonable posture. It is to provide a lower jaw cleaning device.

  In order to achieve the above object, a rail lower jaw cleaning device according to the invention of claim 1 is provided with a device main body capable of rotatably supporting a traveling roller and traveling on a railroad rail by the traveling roller, and provided in the device main body. A travel roller that is rotatably supported with respect to the apparatus main body, and has a brush support that rotatably supports the cleaning brush, and a brush drive source that is provided on the brush support and rotationally drives the cleaning brush. The first spring means for urging the cleaning brush upward with respect to the railroad rail and the apparatus main body to move the cleaning brush in the width direction of the railroad rail. And a second urging means for urging the brush support, which is movably supported, in a direction in which the cleaning brush approaches the railway rail. Together is pressed against the top, is pressed against the cleaning brush on the jaw lower part of the railway rails, by traveling moving the apparatus main body, it is characterized by being configured to clean the jaw lower by the cleaning brush.

  Further, the rail lower part cleaning device according to the invention of claim 2 is the rail lower part cleaning device according to the invention of claim 1, wherein the cleaning brush has a form extending along the longitudinal direction of the rail, and the front-rear direction. The brush support includes a support arm extending in the vertical direction, the rotation shaft of the cleaning brush is supported at the lower part of the support arm, and the brush drive source is provided at the upper part of the brush support. The rotating shaft of the cleaning brush is driven through a transmission shaft that is disposed and extends in the vertical direction along the support arm.

  In the rail lower part cleaning device according to the invention of claim 1, since the lower part of the chin is cleaned with the cleaning brush by running and moving the device main body in the state set on the railroad rail, the rail lower part cleaning device is provided. By running and moving, it is possible to perform polishing and cleaning operations on the lower part of the rail of the railway rail in an easy posture without forcing the worker to take an unreasonable posture such as a middle waist.

  Moreover, in the rail chin lower part cleaning apparatus which concerns on invention of Claim 1, the cleaning brush was urged | biased by the 1st urging means and the 2nd urging means. On the other hand, even when the top surface of the railroad rail is worn, the cleaning brush comes into contact with the lower jaw of the railroad rail, so it is possible to effectively polish and clean the lower jaw surface. It becomes.

  According to the rail chin lower part cleaning device according to the invention of claim 2, the cleaning brush has a form extending along the longitudinal direction of the railroad rail, the support arm of the brush support body extends in the vertical direction, and the brush The drive source rotates the cleaning brush via a transmission shaft extending in the vertical direction along the support arm, so when the rail lower jaw cleaning device is attached to or detached from the rail, it is set on the rail It is possible to prevent interference with a derailment prevention guard or a railroad crossing laid in parallel with the rail when the polishing / cleaning operation is performed.

It is one Example of the rail chin lower part cleaning apparatus which concerns on this invention, Comprising: It is a whole perspective view which shows the rail chin lower part cleaning apparatus of the state set to the rail. It is an external appearance side view which shows the rail chin lower part cleaning apparatus in an Example. It is an external appearance front view which shows the rail chin lower part cleaning apparatus in an Example. It is a whole perspective view which shows the rail chin lower part cleaning apparatus in an Example. It is an external appearance front view which shows the operation | movement at the time of setting the rail chin lower part cleaning apparatus in an Example to a rail. It is an external appearance front view which shows the operation | movement at the time of setting the rail chin lower part cleaning apparatus in an Example to a rail. It is sectional drawing which shows the state which made the cleaning brush contact the lower jaw part of a 60 kg rail. It is sectional drawing which shows the state which made the cleaning brush contact the lower jaw part of a 50 kgN rail. It is the external appearance perspective view and external appearance side view of a common rail. It is the external appearance perspective view and external appearance side view of a common rail. It is sectional drawing of the rail shown with the wheel in a railway vehicle. FIG. 5 is a cross-sectional view of a rail showing an aspect of ultrasonic flaw detection inspection in which a probe is brought into contact with the lower jaw surface (flaw detection surface).

Hereinafter, a specific configuration of the rail lower jaw cleaning device according to the present invention will be described in detail with reference to the drawings illustrating embodiments.
1 to 4 show an embodiment of a rail chin lower part cleaning apparatus according to the present invention. The rail chin lower part cleaning apparatus 1 (hereinafter referred to as the cleaning apparatus 1) is a main body frame 2 as a main body of the apparatus. The front and rear running rollers 3 and 3 are rotatably supported on the main body frame 2.

  The main body frame 2 is formed of a frame structure having a rectangular shape in a plan view, and the left and right side plates 2s and 2s are provided with long holes 2o and 2o for supporting the support shafts 3a and 3a of the traveling rollers 3 and 3, respectively. Since the elongated holes 2o and 2o extend vertically, the traveling rollers 3 and 3 are supported on the main body frame 2 so as to be movable up and down.

  A travel roller biasing spring (first biasing means) 4 for biasing the travel roller 3 downward with respect to the main body frame 2 is provided between the main body frame 2 and the travel rollers 3 and 3. Specifically, the traveling roller urging spring 4 locked to the pin 2p of the side plate 2s in the main body frame 2 is configured to urge the support shaft 3a of the traveling roller 3 downward.

  On the other hand, support frames 5 and 5 as brush supports are provided on the left and right sides of the main body frame 2 described above, and the cleaning brushes 6 and 6 are rotatable on these support frames 5 and 5, respectively. It is supported.

  Here, the cleaning brush 6 has a form extending along the longitudinal direction of a railroad rail (hereinafter simply referred to as a rail) R, and has a center extending in the front-rear direction (longitudinal direction of the rail R). A rotating shaft 6a and a screw-like brush material 6b provided around the rotating shaft 6a and having a tip that forms a spiral are provided.

  The support frame 5 has an upper beam 5b extending along the longitudinal direction of the rail R and three support arms 5a, 5a, 5a extending in the vertical direction, and below these support arms 5a The rotating shaft 6a of the cleaning brush 6 described above is rotatably supported, and a brush cover 5c that covers the outer side of the brush material 6b of the cleaning brush 6 is provided.

  The support frames 5 and 5 positioned on the left and right of the main body frame 2 are arranged on the main body frame 2 in such a manner that the cleaning brush 6 supported on the lower portion of the support arm 5a is moved in the width direction (left and right direction) of the rail R. On the other hand, it is supported in a swinging manner by a pair of front and rear shaft support pins 5A, 5A.

  Further, between the left and right support frames 5, 5, a support frame biasing spring that biases the cleaning brushes 6, 6 supported on the respective support frames 5, 5 in a direction to approach the rail R. (Second biasing means) 7 and 7 are provided.

  More specifically, support frame biasing springs 7 and 7 formed of compression springs are interposed between the upper beams 5b and 5b of the left and right support frames 5 and 5, respectively. The cleaning brushes 6 and 6 supported by 5 are configured to be urged in directions toward each other.

  In addition, a cam surface 5ac that functions as described later when the cleaning device 1 is set on the rail R is formed at the lower end of each support arm 5a in the support frame 5. Further, front and rear support in the support frame 5 is formed. When the cleaning device 1 is set on the rail R, the arms 5a and 5a include a side guide roller 5s that contacts the side portion As of the rail R and a lower guide roller 5l that contacts the lower jaw portion Aj of the rail R. Each is supported rotatably.

  The upper beam 5b of the support frame 5 is provided with a disk sander 10 as a brush drive source. The spindle (rotating shaft) of the disk sander 10 is vertically moved along the support arm 5a of the support frame 5. A transmission shaft 11 is connected to the shaft, and a screw gear (helical gear) 12 is interposed between the transmission shaft 11 and the rotating shaft 6a of the cleaning brush 6. The cleaning brush 6 is a disc sander. 10 is rotated by the driving force transmitted from 10 through the transmission shaft 11 and the screw gear 12.

  Incidentally, the cleaning device 1 according to the embodiment has an appearance in which the front and rear total length is about 400 mm, the total height is about 300 mm, and the left and right total width is about 200 mm. It has an appearance that is so-called two-fold rotational symmetry that matches the above.

  The cleaning device 1 of the embodiment configured as described above is supported by the main body frame 2 as clearly shown in FIG. 3 in a state where it is set with respect to the rail R as shown in FIGS. The traveling roller 3 is placed on the top At of the head A of the rail R, and the cleaning brushes 6 and 6 supported by the left and right support frames 5 and 5 are below the chin of the head A of the rail R. Aj is in contact with Aj.

  Here, the traveling roller 3 is urged downward with respect to the main body frame 2 by the traveling roller urging spring (first urging means) 4 as described in detail above. Is mounted on the top portion At of the rail R, the main body frame 2 is urged upward with respect to the traveling roller 3, and the left and right support frames 5, 5 provided on the main body frame 2 move upward. Thus, the lower guide rollers 5l and 5l supported on the support arm 5a of the support frames 5 and 5 come into contact with the lower jaw portion Aj of the rail R.

  The left and right support frames 5 and 5 are urged in a direction in which the cleaning brush 6 approaches the rail R by a support frame urging spring (second urging means) 7 as described in detail above. Therefore, the side guide rollers 5s and 5s supported on the support arm a of the support frames 5 and 5 are in pressure contact with the side portion As of the rail R.

  Thus, the lower guide rollers 5l and 5l are in pressure contact with the lower jaw portion Aj of the rail R, and the side guide rollers 5s and 5s are in pressure contact with the side portion As of the rail R. The cleaning brushes 6 and 6 that are supported occupy an optimal relative position with respect to the lower jaw portion Aj of the rail R.

  Therefore, in the state where the cleaning device 1 is set on the rail R, the traveling roller 3 is pressed against the top portion At of the rail R and the cleaning brush 6 is positioned at an optimum position with respect to the lower chin Aj of the rail R. Under the circumstances, the left and right jaw lower portions Aj in the rail R are continuously polished and cleaned by driving and rotating the cleaning brushes 6 and 6 while the left and right cleaning brushes 6 and 6 are driven.

As described above, in the cleaning device 1 of the embodiment, the lower jaws Aj and Aj are cleaned by the cleaning brushes 6 and 6 by running and moving in a state of being set on the rail R. By running and moving, it is possible to perform the polishing / cleaning operation on the lower jaw portion Aj of the rail R with an easy posture without forcing the worker to take an unreasonable posture such as a middle waist.
In addition, by attaching a towline or a long handle (not shown) to the cleaning device 1, the degree of freedom of the posture of the worker at the time of work is greatly improved. It is also possible to run and perform polishing / cleaning work on the rail R.

  During polishing and cleaning of the rail R by the cleaning device 1, rust dust and the like removed from the rail R by the cleaning brush 6 is guided by the brush cover 5c and falls in the vicinity of the rail R. It will be prevented in advance that it is scattered.

  In the cleaning device 1 of the embodiment, as described above, the traveling roller 3 is urged downward with respect to the main body frame 2 by the traveling roller urging spring (first urging means) 4. Regardless of the amount of wear on the top surface At of the head A of the rail R, the left and right support frames 5 and 5 provided on the main body frame 2 move upward, and the cleaning brushes 6 and 6 are moved below the chin of the rail R. In order to occupy the optimal relative position with respect to Aj, the polishing / cleaning operation for the rail R can be performed by running the cleaning device 1.

  Similarly, in the cleaning device 1 according to the embodiment, the traveling roller 3 is urged downward with respect to the main body frame 2 by the traveling roller urging spring (first urging means) 4. Even if the dimensions of the head A are different, such as the rail (60 kg rail) R and the rail (50 kg N rail) R shown in FIG. Since the support frames 5 and 5 are moved upward and the cleaning brushes 6 and 6 are positioned at an optimal relative position with respect to the lower jaw portion Aj of the rail R, no parts are required even for a plurality of types of rails R having different shapes. The polishing / cleaning operation can be carried out by running the cleaning device 1 without requiring replacement.

  Further, the rail (60 kg rail) R shown in FIG. 6 and the rail (50 kg N rail) R shown in FIG. 7 are different from each other in the lower jaw portion Aj, but the cleaning brush in the cleaning device 1 is different. Since the brush material 6b of 6 is normally made of a thin wire of metal or resin and can be deformed, it effectively abuts against the chin lower part Aj having a different shape, and different types of rails R having different shapes. On the other hand, the polishing / cleaning operation of the lower chin Aj can be performed without requiring any part replacement.

  On the other hand, when the cleaning device 1 of the embodiment as described above is set on the rail R, first, as shown in FIG. 5A, it is formed at the lower ends of the support arms 5a, 5a in the left and right support frames 5, 5. The cam surfaces 5ac and 5ac are brought into contact with the head A of the rail R. When the cleaning device 1 is pressed as indicated by the arrow D, the cam surfaces 5ac and 5ac are attached to the head A of the rail R. By making sliding contact with the side portions, the support arms 5a and 5a of the left and right support frames 5 and 5 are opened as shown by arrows O and O against the biasing force of the support frame biasing spring 7, and further cleaning is performed. When the cam surface 5ac, 5ac gets over the head A of the rail R by depressing the device 1, the support arms 5a, 5a in the left and right support frames 5, 5 are moved by the biasing force of the support frame biasing spring 7. Close The Rukoto, cleaning device 1 becomes to be set at a predetermined position (see FIG. 3) with respect to the rail R as shown in Figure 5 (b).

  Here, according to the cleaning device 1 of the embodiment, the cleaning brush 6 has a form extending along the longitudinal direction of the rail R, the support arm 5a of the support frame 5 extends in the vertical direction, and the cleaning brush. 6 is driven and rotated via a transmission shaft 11 extending in the vertical direction along the support arm 5a, so that the derailment prevention guard G is laid in parallel with the rail R as shown in FIG. Even at level crossings, when the cleaning device 1 is attached to and detached from the rail R, and when the cleaning device 1 is set on the rail R and polishing and cleaning work is performed, interference with the derailment prevention guard G is prevented in advance. can do.

  In the cleaning device 1 of the embodiment as described above, since the cleaning brushes 6 and 6 are provided on the left and right sides of the main body frame 2, the left and lower chin lower portions Aj and Aj in the head A of the rail R are It is possible to polish and clean at the same time by traveling, and the efficiency of the cleaning operation for the rail R is very good. Incidentally, even when only one lower jaw Aj on the rail R is cleaned, it is possible to easily cope with the problem by removing one cleaning brush 6 from the cleaning device 1.

  Moreover, in the cleaning apparatus 1 of the embodiment, the disc sander 10 of the electric tool is used as a brush drive source, so that it does not require a special power supply device and operates with an AC 100 V power source from a small generator used on site. Therefore, it is extremely effective in reducing the cost associated with the implementation of ultrasonic flaw detection.

  Furthermore, according to the cleaning device 1 of the embodiment, the cleaning brush 6 is configured to extend in the longitudinal direction of the rail R, so that the cleaning brush 6 that moves as the device 1 travels is specified on the rail R. Therefore, the polishing / cleaning operation for the rail R is reliably and effectively performed.

1 Rail lower jaw cleaning device 2 Body frame (device body)
3 Traveling roller 4 Traveling roller biasing spring (first biasing means)
5 Support frame (Brush support)
5a Support arm 6 Cleaning brush 6a Rotating shaft 6b Brush material 7 Support frame biasing spring (second biasing means)
10 Disc sander (brush drive source)
11 Transmission shaft 12 Screw gear R Rail (railway rail)
A head At head top As side Side Aj Lower jaw B Abdomen C Bottom G Derailment prevention guard

Claims (2)

A rail lower jaw cleaning device for polishing and cleaning the surface of the lower jaw prior to ultrasonic flaw detection performed by bringing a probe into contact with the lower jaw of the head of a railroad rail,
An apparatus main body which rotatably supports a traveling roller and can travel on the railroad rail by the traveling roller;
A brush support provided in the apparatus main body and rotatably supporting the cleaning brush;
A brush drive source provided on the brush support and configured to rotate and drive the cleaning brush;
A first roller that biases the cleaning brush upward with respect to the railroad rail by biasing the traveling roller supported so as to be movable up and down with respect to the device main body downward. Spring means;
Second urging means for urging the brush support supported by the apparatus main body so as to move the cleaning brush in the width direction of the railway rail in a direction in which the cleaning brush approaches the railway rail. And
In the state set on the railroad rail, the cleaning roller is pressed against the top of the railroad rail, and the cleaning brush is pressed against the lower chin of the railroad rail to move the apparatus main body, thereby moving the cleaning body. A rail lower jaw cleaning device characterized by cleaning the lower jaw with a brush. The cleaning brush has a form extending along the longitudinal direction of the railroad rail, and includes a rotating shaft and a brush material extending in the front-rear direction,
The brush support includes a support arm extending in the vertical direction, and supports the rotating shaft of the cleaning brush at a lower portion of the support arm.
The brush drive source is disposed on an upper portion of the brush support and drives the rotating shaft of the cleaning brush through a transmission shaft extending in the vertical direction along the support arm.
The rail lower chin cleaning apparatus according to claim 1, wherein:

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