JP2008267960A - Ruler for confirming rail-grinding position - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ruler for confirming rail-grinding position that allows accurate confirmation of grinding position and improvement of working efficiency. <P>SOLUTION: A ruler 1 for rail-grinding includes a frame 3 formed so as to encompass a rail head part 2A; a fixing means 10 for fixing the frame 3 to the rail 2; a moving reference ruler 21, having a reference surface 21a extending in a direction orthogonal to a direction of central axial line O of the rail 2, in a state where the frame 3 is fixed to the rail 2, abutting against a head top surface 2a of the rail 2, and provided to the frame 3 so as to be movable along the direction of center axial line O; and a determination unit 22 which is movable along the reference surface 21a and having a tip indication part 22a, at a position on the side of the rail 2 in the direction of central axial line O from the reference surface 21a. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a rail cutting position confirmation ruler for checking a cutting position at the time of rail cutting.

Conventionally, when a train travels on a rail, train load, driving force, and the like act on the rail through the wheels, so that the structure of the rail surface changes due to metal fatigue or the rail itself is worn. If metal fatigue is left as it is, rail scratches may occur, rolling noise between the wheels and rails may become intense, and eventually the rails may break. For this reason, the rail surface is corrected at least every 0.1 mm by removing at least 0.1 mm or more of the rail surface using a grinding device such as a grinder so that a new metal structure that does not cause metal fatigue is exposed on the surface. Maintenance work is being performed.
In general, when grinding, to prevent the wheel from rolling on the rail while rolling, for example, below a predetermined position below the rail top surface at the gauge corner portion of the rail (for example, 5 mm below the rail top surface) The cutting standard is set so that cutting is not performed at the position below (1).

By the way, as a device for measuring the head of the rail, particularly the top surface, a measuring instrument for measuring the amount of wear of the rail has been proposed in, for example, Patent Document 1 and Patent Document 2.
Patent Documents 1 and 2 are based on the lower part of the head and chin of the rail inside and between the inner side of the gauge and the side of the rail head in Patent Document 1, and in Patent Document 2 on the lower part of the head and jaw inside the gauge. It is fixed at a predetermined position with respect to the rail, and the installation position of the measurement instrument main body fixed at that time is set as a reference position, and the measurement instrument main body can be brought into contact with each one of the rail top surface and the rail R surface portion. A caliper (digital side length device) is provided at a position where the caliper is brought into contact with the rail top surface and the rail R surface, and the amount of wear is measured by reading the scale (or digital display value) at that time. There is disclosed a measuring instrument that confirms how much the contact position is worn with respect to a reference value.
Japanese Patent Laid-Open No. 10-73401 JP 2002-296001 A

However, the conventional grinding work has the following problems.
That is, when the rail is corrected, it is necessary to confirm the position 5 mm below the rail top (top) based on the set correction standard as described above. This is a method for confirming a position 5 mm below, and there are variations in the number of people and errors are large, resulting in a problem in accuracy. And in the abrasion measuring device of patent document 1 and patent document 2, there are only two measurement points where the caliper (digital side length device) abuts, one point on the rail top surface and one point on the R portion. It is not a configuration that grasps the position of the top of the rail, that is, it is not a configuration that can accurately confirm where the rail is the top of the rail, but it is possible to confirm the position 5 mm below the rail top surface that serves as a reference for grinding could not. Therefore, there has been a demand for a suitable measuring device that can accurately and easily confirm a position below a predetermined dimension from the rail top surface during or after the cutting.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a rail cutting position confirmation ruler capable of accurately confirming a cutting position and improving work efficiency.

In order to achieve the above object, the rail cutting position confirmation ruler according to the present invention is a rail cutting position confirmation ruler that is attached to the rail head to check the cutting position, and surrounds the rail head. A ruler body formed so as to be fixed, a fixing means for fixing the ruler body to the rail, and a reference surface extending in a direction perpendicular to the central axis direction of the rail while the ruler body is fixed to the rail. And a reference ruler that can be brought into contact with the top surface of the rail and that can be moved along the central axis direction on the ruler body, and can be moved along the reference plane, and can be moved along the central axis direction from the reference plane. And a discriminator having a tip indicating portion at a position on the rail side.
In the present invention, when correcting the rail side (gauge corner side) of the rail, by fixing the ruler body to the rail by the fixing means, the reference plane of the reference ruler is perpendicular to the central axis of the rail. Become. Then, by moving the reference ruler from the top to the bottom in the direction of the central axis while maintaining the direction in which the reference plane is orthogonal to the central axis, the reference plane is the top surface of the rail, that is, the top of the rail. It will contact the top. Next, the determiner is moved to the rail side along the reference plane, and is positioned so that the tip indicating portion of the determiner contacts the upper edge of the head on the gauge corner side of the rail. Since the tip indicating unit is a position below the reference plane by a predetermined dimension, the position indicated by the tip indicating unit is a position below the predetermined dimension with respect to the topmost part of the rail, for example, the reference of the cutting range is the rail. When the position is 5 mm or less below the topmost part, the position 5 mm below the topmost part of the rail can be easily confirmed.

In the rail cutting position confirmation ruler according to the present invention, the ruler main body extends in parallel to the central axis direction with the ruler main body fixed to the rail, and the reference ruler extends along the central axis direction. It is preferable to have a guide portion that guides it to move.
In the present invention, with the ruler body fixed to the rail by the fixing means, the reference ruler is moved along the guide portion of the ruler body, so that the reference surface of the reference ruler is always orthogonal to the central axis of the rail. Can be positioned in the direction.

Moreover, in the rail cutting position confirmation ruler according to the present invention, the fixing means is in a state in which the first locking portion that contacts the lower portion of the head chin of the rail and the first locking portion is in contact with the lower portion of the head and chin. It is preferable that the second engaging portion is in contact with the side surface of the head portion of the rail.
In the present invention, the ruler body is fixed to the rail at a predetermined position by bringing the first locking portion into contact with the lower portion of the head chin of the rail and fixing the second locking portion in contact with the side surface of the head of the rail. That is, it can be fixed so that the reference surface of the reference ruler is in a direction perpendicular to the central axis of the rail.

According to the rail cutting position confirmation ruler of the present invention, since the reference surface of the reference ruler abuts on the topmost part of the rail, the position indicated by the tip indicating part of the determiner is based on the topmost part of the rail. The position is lower by a predetermined dimension, and the position can be easily confirmed. Therefore, when the reference of the cutting range is, for example, a position 5 mm below the top, the cutting position 5 mm below the top can be accurately confirmed during or after cutting. .
In addition, this rail cutting position confirmation ruler has a simple structure in which the position of the reference surface of the reference ruler can be arranged in a direction orthogonal to the central axis direction of the rail simply by fixing the ruler body to the rail by fixing means. As a result, the confirmation work becomes easy and the work efficiency can be improved.

Hereinafter, an embodiment of a rail cutting position confirmation ruler according to the present invention will be described with reference to FIGS.
FIG. 1 is a front view showing a state in which a cutting position is confirmed using a rail cutting ruler according to an embodiment of the present invention, and FIG. 2 is a view showing a state in which the cutting position is also confirmed. FIG. 3 is a partially omitted enlarged view showing a cutting position confirmation state by the determination unit. FIG.

  As shown in FIG. 1, the rail cutting position confirmation ruler (hereinafter referred to as “rail cutting ruler 1”) according to the present embodiment adjusts the shape of an existing rail laid on a railway or the like, It is applied to maintenance work that corrects the rail surface with a grinder or the like when removing fatigue, and the side surface of the head has a 1/40 slope (hereinafter simply referred to as “rail 2”). It is used by being attached to the head 2A.

  The rail cutting ruler 1 includes a frame 3 (ruler body) formed in a bowl shape so as to surround the rail head 2A, and a predetermined position with respect to the rail 2 (that is, a reference ruler 21 described later). And a fixing means 10 for fixing the reference surface 21a to a position perpendicular to the central axis O of the rail 2 and a top portion P of the rail 2 (see FIG. 3). ) And a cutting position determination unit 20 that indicates a position below a predetermined dimension.

  The frame 3 has a substantially U-shape formed from a plate-like member having a constant thickness, and includes a central portion 3A, a first side wall portion 3B and a second side wall portion orthogonal to both ends of the central portion 3A. 3C (corresponding to the “guide portion” of the present invention). The first side wall part 3B and the second side wall part 3C are arranged in parallel. A fixing means 10 is provided on one first side wall portion 3B located on the outer side of the rail 2 between the rails 2, and a cutting position determining portion 20 is provided on the other second side wall portion 3C.

The fixing means 10 includes a magnet 11 (second locking portion) that is fixed to the head side surface 2b of the rail 2 by the action of magnetic force, and a contact that is abutted and supported by the head lower jaw 2c of the rail 2. A stop pin 12 (first locking portion) is provided.
The magnet 11 is fixed to the inner surface of the first side wall 3 </ b> B of the frame 3. The fixed surface 11a of the magnet 11 has a flat shape, and the fixed surface 11a is parallel to the first side wall 3B and the second side wall 3C. That is, in a state where the magnet 11 is fixed to the rail 2 together with the frame 3, the fixing surface 11 a, the first side wall portion 3 B, and the second side wall portion 3 C of the magnet 11 extend in parallel to the direction of the central axis O of the rail 2. Yes.

The locking pin 12 is provided on the first side wall 3 </ b> B via the base 13, protrudes from the fixed surface 11 a of the magnet 11, and comes into contact with the head jaw lower part 2 c of the rail 2.
That is, the frame 3 (that is, the rail cutting ruler 1) is moved to the rail 2 in a state where the magnet 11 is fixed to the head side surface 2b of the rail 2 while the locking pin 12 is brought into contact with the head lower jaw 2c. It is comprised so that it may always be located in the reference position with respect to. Specifically, the posture of the frame 3 with respect to the central axis O of the rail 2 is fixed by simply fixing the locking pin 12 and the magnet 11 to the rail 2, and a later-described reference ruler 21 provided in the frame 3 is attached to the rail 2. The head can be set at a position spaced apart from the top surface 2a by a predetermined distance.

The correction position determination unit 20 includes a reference ruler 21 provided so as to be movable along the second side wall 3 </ b> C, and a determiner 22 provided so as to be movable along the reference ruler 21.
The reference ruler 21 has a flat plate shape that extends in a direction orthogonal to the second side wall portion 3 </ b> C and is disposed so as to face the center portion 3 </ b> A of the frame 3. At this time, in a state where the frame 3 is fixed to the rail 2 in a predetermined posture, a surface of the reference ruler 21 opposite to the central portion 3A side forms a reference surface 21a that abuts the top surface 2a of the rail 2. That is, when the frame 3 is fixed by the fixing means 10, the reference surface 21 a of the reference ruler 21 is configured to be in a direction orthogonal to the central axis O of the rail 2.

The first guide rail 23 is provided along the outer peripheral surface of the second side wall portion 3C of the frame 3, and the first linear motion block 24 having a thrust bearing provided at the base end portion 21b of the reference ruler 21 is the first. It is guided by the guide rail 23 and is slidably moved in the direction of the central axis O of the rail 2 (arrow Y direction). That is, the reference ruler 21 is configured to be movable in the direction of the central axis O (up and down direction) of the rail 2 forming the arrow Y direction.
Furthermore, a second guide rail 25 is provided on the side surface of the reference ruler 21 in a direction along the reference surface 21a.

The determiner 22 is fixed to a second linear motion block 26 having a thrust bearing. The second linear motion block 26 is guided by the second guide rail 25 and is slidably moved in the direction of the reference surface 21a of the reference ruler 21 (arrow X direction). More specifically, the determiner 22 is positioned on the rail side in the direction of the central axis O of the rail 2 with respect to the reference surface 21a, and a tip indicating portion 22a having a pointed tip in side view is formed. The front end instruction portion 22a is fixed to the second linear motion block 26 in a state in which the front end portion 22c is directed to the front end portion 21c of the reference ruler 21 in the moving direction of the determiner 22 (arrow X direction). That is, the determiner 22 is configured to move so as to move closer to and away from the upper edge 2 d of the head of the rail 2 in a state where the rail cutting ruler 1 is fixed to the rail 2.
An operation knob 29 for moving the determiner 22 is provided on the side surface of the second linear motion block 26. The second linear motion block 26 moves along the second guide rail 25 by rotating the operation knob 29.

  And the position of the front-end | tip instruction | indication part 22a is set so that the reference | standard of the correction range may become the position of 5 mm below from the topmost part P of the rail 2, for example in this Embodiment. In addition, the space | interval D (refer FIG. 3) of this reference surface 21a and the front-end | tip instruction | indication part 22a is arbitrary, and can be changed.

  2 and 3, the reference ruler 21 is brought into contact with the top surface 2a of the rail 2, and the determiner 22 is moved in a direction (X direction) along the reference surface 21a, whereby the determiner 22 is moved to the rail. 2 is in contact with the upper edge 2d of the head. The tip indicating portion 22a of the determiner 22 is configured to point to a position 5 mm below the lower surface (reference surface 21a) of the reference ruler 21. Further, the position of the determiner 22 is a position that does not come into contact with the rail 2 when positioned on the base end portion 21 b side of the reference ruler 21.

  Further, as shown in FIG. 1, the base end portion 21b of the reference ruler 21 is made of a leaf spring or the like in which a convex locking portion 27a projecting inwardly (on the second side wall portion 3C side) is formed at the distal end portion. A stopper 27 is provided. And the protrusion latching part 28 latched to the convex latching | locking part 27a is being fixed to the position near the 2nd side wall part 3C of the center part 3A of the flame | frame 3. As shown in FIG. That is, when the convex locking portion 27a is fixed so as to be hooked on the protruding locking portion 28, the reference ruler 21 is restricted from moving in the vertical direction (arrow Y direction). .

Next, a method of using the rail cutting ruler 1 configured as described above and its operation will be described with reference to the drawings.
As shown in FIG. 1, first, a state in which the convex locking portion 27 a of the stopper 27 is locked to the protruding locking portion 28, that is, the reference ruler 21 is positioned closer to the center portion 3 </ b> A of the frame 3. In this state, the locking pin 12 is brought into contact with the lower head jaw lower portion 2c outside the rail of the rail 2 at an arbitrary position on the rail 2, and the fixed surface 11a of the magnet 11 is attracted to the rail 2 by the action of magnetic force. By fixing to the head side surface 2b, the reference surface 21a of the reference ruler 21 is in a direction (arrow X direction) orthogonal to the central axis O of the rail 2.

  Then, the latching state of the convex latching portion 27a and the projecting latching portion 28 is released, and the reference ruler 21 (the first straight ruler 21) is maintained while maintaining the direction in which the reference surface 21a is orthogonal to the central axis O. The moving block 25) is moved from the upper side to the lower side in the vertical direction (the direction of the central axis O) forming the arrow Y direction along the first guide rail 23 extending to the second side wall 3C, and the reference surface 21a is moved to the rail. 2 is brought into contact with the top surface 2a of the head 2, that is, the topmost portion P (see FIG. 3) of the rail 2.

  Next, as shown in FIG. 2, by rotating the operation knob 26, the determiner 22 (second linear motion block 26) is moved to the rail 2 side along the second guide rail 25 parallel to the reference plane 21a. The tip designating part 22a of the determiner 22 is positioned so as to abut on the head upper edge 2d on the gauge side (gauge corner side) of the rail 2. Since the tip indicating portion 22a is a position below the reference surface 21a by a predetermined dimension, the position indicated by the tip indicating portion 22a is a predetermined dimension below the topmost portion P (see FIG. 3) of the rail 2 as a reference. The position, for example, a position 5 mm below the topmost part P, which is used as a reference for the cutting range, can be easily confirmed.

In the rail cutting position confirmation ruler according to the present embodiment described above, the reference surface 21a of the reference ruler 21 comes into contact with the topmost part P of the rail 2, so that the position indicated by the tip indication part 22a of the determiner 22 Becomes a position below a predetermined dimension with respect to the topmost part P of the rail 2, and the position can be easily confirmed. Therefore, when the reference of the correction range is, for example, the position 5 mm below from the top P, it is possible to accurately confirm the correction position 5 mm below the top during or after the cutting. it can.
Moreover, the rail cutting position confirmation ruler 1 is arranged in a direction in which the position of the reference surface 21a of the reference ruler 21 is orthogonal to the direction of the central axis O of the rail 2 only by fixing the frame 3 to the rail 2 by the fixing means 10. Since it is a simple structure that can be performed, the confirmation work is facilitated, and the work efficiency can be improved.

Although the embodiment of the rail cutting position confirmation ruler according to the present invention has been described above, the present invention is not limited to the above embodiment, and can be changed as appropriate without departing from the spirit of the present invention.
For example, in the present embodiment, the distance D between the reference surface 21a of the reference ruler 21 and the tip indicating portion 22a is set to 5 mm, but is not limited to this dimension. The point is that the tip indicating portion 22a of the discriminator 22 can be positioned at a position below a predetermined dimension to be confirmed from the topmost portion P with reference to the topmost portion P of the rail 2 with which the reference surface 21a abuts.

Further, the magnet 11 and the locking pin 12 of the fixing means 10, the moving mechanism of the reference ruler 21 and the discriminator 22, the form and size of the frame 3, etc. are not limited to this embodiment, and the rail What is necessary is just to set so that it may become optimal based on a magnitude | size and other conditions. That is, in this embodiment, the magnet 11 is fixed to the head side surface 2b of the rail 2 and the locking pin 12 is locked to the head jaw lower portion 2c. You may make it use the magnet of the shape along the head side surface 2b from the chin lower part 2c.
In addition, this rail correction position confirmation ruler can be applied not only to conventional rails, but also to all rails, including rails for Shinkansen, regardless of the size and shape of the rails. is there.

It is a front view which shows the state which confirms a cutting position using the ruler for rail cutting by embodiment of this invention. It is a figure which similarly shows the state which confirms the correction position, Comprising: It is a front view of the state which made the determination element contact | abut to the head of a rail. It is the enlarged view which abbreviate | omitted partially which shows the cutting position confirmation state by the determination part.

Explanation of symbols

1 Rail cutting ruler (Rail cutting position confirmation ruler)
2 rail 2a head top surface 2b head side surface 2c head chin lower part 3 frame (ruler body)
3C 2nd side wall part (guide part)
10 Fixing means 11 Magnet (second locking portion)
12 Locking pin (first locking part)
21 reference ruler 21a reference surface 22 discriminator 22a tip indication part P top part

Claims (3)

A rail cutting position confirmation ruler that is attached to the head of the rail to check the cutting position,
A ruler body formed so as to surround the head of the rail;
Fixing means for fixing the ruler body to the rail;
In a state where the ruler body is fixed to the rail, the ruler body has a reference surface extending in a direction perpendicular to the direction of the central axis of the rail, and can come into contact with the top surface of the rail. A reference ruler provided so as to be movable along the central axis direction;
A determiner that is movable along the reference plane and has a tip indicating portion at a position on the rail side in the central axis direction from the reference plane;
A rail cutting position confirmation ruler characterized by comprising:   The ruler body is a guide that extends in parallel with the central axis direction while the ruler body is fixed to the rail, and guides the reference ruler to move along the central axis direction. The rail cutting position confirmation ruler according to claim 1, further comprising a portion.   The fixing means is in contact with a side surface of the head of the rail in a state where the first locking portion is in contact with a lower part of the head jaw of the rail, and the first locking part is in contact with the lower part of the head jaw. The rail cutting position confirmation ruler according to claim 1 or 2, comprising a second locking portion.

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