JP2016204980A - Belt-type rail head re-profiling machine and self-traveling rail head re-profiling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide: a belt-type rail head re-profiling machine capable of efficiently performing rail head re-profiling work with one rail head re-profiling machine by using a grinding belt rotating in a longitudinal direction of a rail; and a self-traveling rail head re-profiling device.SOLUTION: A re-profiling machine is provided with a pair of grinding belt rotating pulleys 24c1, 24c2 arranged with a predetermined interval therebetween and a grinding belt 24d is stretched across the pulleys. The grinding belt 24d is provided with, in the inside thereof: a pressing roller 24f having a rail head shape pressing surface whose shape is substantially matched with a cross-sectional shape of a head part of a rail R; and a pressing plate 24e having a flat-plate pressing surface having a flat-plate shape and a predetermined length in a longitudinal direction of the rail R. The pressing roller 24f and the pressing plate 24e are relatively lifted and lowered to cause the grinding belt 24d to be pressed against the head part of the rail R with the flat-plate pressing surface of the pressing plate 24e or the rail head shape pressing surface of the pressing roller 24f, and thereby the grinding is performed.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a belt-type rail head correcting machine and a self-propelled rail head correcting apparatus that correct the head of a rail.

  Since wavy wear and rail joint steps generated on the rail head cause vibration and noise, various types of belt-type rail head straighteners and self-propelled rail heads have been conventionally used for the purpose of polishing and removing them. A part correction device has been proposed.

  The self-propelled rail head grinding machine is equipped with a belt-type rail head grinder and is self-propelled on the rail. While running on the rail at a low speed, the grinding wheel for the belt-type rail head grinder The head of the rail is ground to remove the wavy wear and the step of the rail joint. By the way, in the curve portion of the rail, in order to facilitate the passage of the vehicle, a cant that makes the outer rail rail higher than the inner rail rail and slack that makes the rail width wider than normal (straight portion) are provided. Therefore, wavy wear tends to occur. Therefore, as a self-propelled rail head grinding device, a grinding unit including a guide wheel with a flange and a grinding wheel is provided slidably in the width direction of the vehicle body. A pressing mechanism is provided between the grinding unit and the vehicle body, and the grinding unit is pressed so that the flange of the guide wheel is always in contact with the inner surface of each rail. There has been proposed a rail head grinding apparatus that enables rail grinding while being positioned directly above (see, for example, Patent Document 1).

JP 2003-53655 A

  However, the self-propelled rail head rectifying device of Patent Document 1 has a belt-type grinding wheel for biasing means in the case of performing finish grinding for restoring the shape of the rail head after roughing to correct wavy wear. There is a problem that it takes time to grind by pressing against the head of the rail with the flat pressing surface.

  In particular, wavy wear occurs on the tread surface of the rail due to a curve, a traveling speed, a traveling difference between train wheels, and the like. The unevenness of the wavy wear may exceed 1 m on the Shinkansen or the like when the pitch is large from 50 mm.

  However, in the self-propelled rail head correcting apparatus of Patent Document 1, an elastic member such as a spring is provided between the pressing surface and the holding portion as shown in FIG. It moves up and down following the irregularities of the wavy wear, and the wavy wear cannot be corrected accurately.

  Therefore, the present invention has been made paying attention to these problems and the like, and a rail head correcting machine is used to perform a rail head correcting operation using a grinding belt rotating in the longitudinal direction of the rail. It is an object of the present invention to provide a belt-type rail head corrector that can be more efficiently executed, and a self-propelled rail head corrector using such a belt-type rail head corrector.

In order to solve the above-mentioned problems, a belt-type rail head straightener according to the present invention is a belt-type rail head straightener that corrects the head of the rail, with a predetermined interval in the straightener main body. A pressing roller having a rail head-shaped pressing surface that substantially matches the cross-sectional shape of the rail head inside the grinding belt spanned between a pair of provided grinding belt rotating pulleys, and a predetermined length in the longitudinal direction of the rail A pressing plate having a flat plate-shaped pressing surface having a length, and by raising and lowering the pressing roller and the pressing plate relatively, the flat pressing surface of the pressing plate or the pressing roller of the pressing roller A pressing plate / roller elevating mechanism for pressing and grinding the grinding belt against the rail head at the rail head-shaped pressing surface is provided.
Here, the predetermined length in the longitudinal direction of the rail on the plate-like pressing surface of the pressing plate is equal to or greater than the pitch interval of the unevenness of wavy wear formed on the tread surface of the rail head.
The self-propelled rail head correcting device according to the present invention has a frame that has a frame that is narrower than the interval between the rails, and that travels on the rail by wheels on both sides of the frame. A self-propelled rail head provided with any one of the above-described belt-type rail head straighteners slidable in a direction perpendicular to the rail via a slide mechanism on at least one side of the carriage body A rail follower that makes the belt-type rail head corrector follow the rail before and after the belt-type rail head corrector and further hits both sides of the rail head to be corrected. When one of the roller and a plurality of rotating rollers arranged closely in the longitudinal direction of the rail hits the rail head, the belt type rail head straightener is always fixed to the rail head. And having a height holding roller for holding the height.

According to the belt-type rail head straightener and the self-propelled rail head straightener of the present invention, the cross-sectional shape of the rail head is substantially matched to the inside of the grinding belt having a polishing portion on the surface. A pressing roller having a rail head-shaped pressing surface and a pressing plate having a flat plate-shaped pressing surface having a predetermined length in the longitudinal direction of the rail, and the pressing roller and the pressing plate are moved up and down relatively. Thus, the grinding belt is pressed against the rail head by the flat pressing surface of the pressing plate or the rail head shape pressing surface of the pressing roller, and is ground.
Therefore, according to the present invention, for example, after grinding by pressing the grinding belt against the rail with a flat pressing surface, it becomes possible to perform finish grinding by pressing the grinding belt against the rail with a pressing roller, Rail head grinding work can be efficiently performed by a single rail head grinding machine and a self-propelled rail head grinding machine.
Further, according to the self-propelled rail head shaving device of the present invention, since it has a slide mechanism part, a rail follower part, a height holding roller, etc., even if there is slack or meandering on the rail, the slack can be easily configured. It can automatically follow the meander and meander to perform self-propelled correction.

It is a top view of the whole self-propelled rail head part correction device of an embodiment concerning the present invention. It is a front view of the whole self-propelled rail head part correction device of an embodiment concerning the present invention. It is a rear view of the whole self-propelled rail head part correcting device of an embodiment concerning the present invention. FIG. 4 is a right side view showing a state in which the grinding belt is pressed against the rail by the pressing plate of the rail head correcting machine in the self-propelled rail head correcting device according to the embodiment of the present invention to grind the head of the rail. is there. The expansion of the principal part which shows the state which presses a grinding belt against a rail with the pressing board of the rail head part correction machine in the self-propelled rail head part correction apparatus of embodiment which concerns on this invention, and grinds the head part of a rail It is a right view. It is a right view which shows the state which presses a grinding belt on a rail with the pressing roller of the rail head-shaping machine in the self-propelled rail head-shaping device of embodiment which concerns on this invention, and grinds the head of a rail. is there. The expansion of the principal part which shows the state which presses a grinding belt against a rail with the pressing roller of the rail head correction machine in the self-propelled rail head correction device of an embodiment concerning the present invention, and grinds the head of a rail It is a right view. The main part which shows the state which presses a grinding belt on a rail with the pressing plate of the rail head part correction machine in the self-propelled rail head part correction apparatus of embodiment which concerns on this invention, and grinds the tread of the head part of a rail FIG. The state which grinds the left corner of the rail head by pressing the grinding belt against the rail by the pressing plate of the rail head cutter in the self-propelled rail head cutter of the embodiment according to the present invention is shown. It is an expanded sectional front view of the principal part. The state which is grinding the right corner of the head of a rail by pressing a grinding belt on a rail with the pressing board of a rail head shaving machine in a self-propelled rail head shaving device of an embodiment concerning the present invention is shown. It is an expanded sectional front view of the principal part. The main part which shows the state which presses a grinding belt against a rail with the pressing roller of the rail head part correction machine in the self-propelled rail head part correction apparatus of embodiment which concerns on this invention, and grinds the tread of the rail head part FIG.

  Next, a self-propelled rail head correcting device 1 according to an embodiment of the present invention and a belt-type rail head correcting device 2 equipped with the self-propelled rail head correcting device 1 will be described.

<Configuration of Self-propelled Rail Head Grinding Device 1>
As shown in FIG. 1, the self-propelled rail head correcting device 1 of the embodiment is a device that self-propels and corrects the head of the rail R, and includes a cart body 10 and at least one of the cart body 10. A belt-type rail head straightening machine 2 that is slidable in a direction perpendicular to the rail R and slides the head of the rail R through slide / falling mechanism portions 14a and 14b is provided. In the state shown in FIG. 1, the belt-type rail head cutter 2 is provided only on one side (the lower side in the figure) of the cart body 10, but the other side (the upper side in the figure, the upper side) of the cart body 10. ) May be provided with the belt-type rail head cutter 2, or the same belt-type rail head cutter 2 may be provided on both sides of the carriage body 10 (upper and lower sides in the figure). good. Although not shown in FIG. 1, a generator is mounted on the cart body 10, and a drive current is supplied to the drive unit 13 of the cart body 10 and the belt-type rail head cutter 2.

  The cart body 10 has a frame 11 that is narrower than the interval between the rails R, and has front wheels 12a and 12a and rear wheels 12b and 12b on both front and rear sides thereof. The vehicle travels on the rail R by rotating the wheels 12a, 12a, 12b, 12b provided in front of or behind the vehicle 11 respectively. Here, the front wheels 12a, 12a provided in front of the frame 11 are driven, but the present invention is not limited to this.

  The frame 11 of the cart body 10 includes a left frame member 11a and a right frame member 11b on both sides (upper and lower sides in the drawing) parallel to the longitudinal direction of the rail R, and a front and rear perpendicular to the longitudinal direction of the rail R (shown in the drawing). Right side left) front frame members 11c, 11c and a rear frame member 11d. Here, the drive unit 13 incorporating the first motor 13a is provided on the rear frame member 11d, and rotates the wheels 12a and 12c connected by the axle 15 to reciprocate the carriage main body 10. That is, the drive unit 13 can rotate forward and backward, and the cart body 10 can move forward and backward. The rear wheels 12a and 12c and the front wheels 12b and 12d are connected by an axle 15 as shown in FIG.

  Before and after the right frame member 11b, there are slide mechanism portions 14a and 14b for installing the belt-type rail head cutter 2 slidably in the direction perpendicular to the rail R, respectively. In addition, you may provide the slide mechanism parts 14a and 14b also on the left side frame material 11a side.

  The slide mechanism portions 14a and 14b are respectively fixed rails 14a1 and 14b1 with bolts and screws fixed to the right frame member 11b, and rails via rollers (not shown) to the fixed bases 14a1 and 14b1. It consists of slide plates 14a2 and 14b2 that are slidable in a direction perpendicular to R. As shown in FIGS. 9 and 11, the slide plates 14a2 and 14b2 have hoisting and lowering arms 14a4 and 14b4 for raising and lowering the belt-type rail head cutter 2 with respect to the rail 2 via rotating shafts 14a3 and 14b3, respectively. Further, fixing bolts 14a5 and 14b5 for fixing the belt-type rail head cutter 2 are provided at the tips of the undulating arms 14a4 and 14b4.

<Configuration of belt type rail head cutter 2>
Next, the configuration of the belt-type rail head cutter 2 according to this embodiment will be described.
The belt-type rail head cutter 2 according to the present embodiment is provided on the front and rear sides of the belt-type rail head cutter 2 below the front and rear ends of the belt-type rail head cutter 2, while hitting both sides of the rail R to be corrected. The rail follower rollers 21a and 21b that rotate and follow the belt-type rail head corrector 2 with respect to the rail R, and the front and rear ends of the belt-type rail head corrector 2 are provided below the rail R. When one of the plurality of rotating rollers 22a1 and 22b1 arranged in close contact with each other hits the rail head, the belt-type rail head cutter 2 is always kept at a constant height with respect to the head of the rail R. Height holding rollers 22a, 22b to be held, angle adjustment setting plates 23a, 23b to which rail following rollers 21a, 21b and height holding rollers 22a, 22b are attached, angle adjustment setting plates 23a, Mounted between 3b, and a expurgation main body 24 to expurgation head (tread) of the rail R.

  The angle adjustment setting plates 23a and 23b are respectively provided before and after the belt-type rail head cutter 2 as shown in FIG. The right side projecting portions 23a1, 23b1 and the left side projecting portions 23a2, 23b2 projecting in the direction, and centering pins 25a1, 25b1 provided so as to project parallel to the rail R are inserted. Arc-shaped angle setting through holes 23a3 and 23b3 having a radius centered on the center are formed.

  Then, one of the angle adjustment setting plates 23a and 23b, for example, screw rod support plates 23b11 and 23b21 are provided at the tips of the right and left protruding portions 23b1 and 23b2 of the angle adjustment setting plate 23b, respectively. The screw rod support plates 23b11 and 23b21 are rotatably attached with an angle adjusting screw 23b4 having a screw groove formed on the outer periphery.

  An angle adjustment handle 23b5 for rotating the angle adjustment screw 23b4 is provided at one end of the angle adjustment screw 23b4. Accordingly, when the angle adjustment handle 23b5 is rotated, the angle adjustment screw 23b4 is rotated, and the centering nut 25b3 screwed to the angle adjustment screw 23b4 is moved as shown in FIGS. Since the angle of the centering rod 25b2 to which the centering nut 25b3 is attached changes, the cutting angle of the cutting machine body 24 with respect to the rail R can be set or adjusted.

  Further, since the slide plates 14a2 and 14b2 of the slide mechanism portions 14a and 14b are provided with the up and down arms 14a4 and 14b4 via the rotary shafts 14a3 and 14b3, the belt type rail head cutter 2 is provided. When the hoistable arms 14a4 and 14b4 of the slide mechanism portions 14a and 14b to which are attached are lifted up, the belt-type rail head cutter 2 can be separated from the rail 2. For this reason, the belt-type rail head corrector 2 is separated from the rail 2, so that the belt-type rail head corrector 2 can be removed or attached or removed. Maintenance work of the rail head cutter 2 is facilitated. Further, when the rail R is not rectified, the friction resistance with the rail R becomes 0 by running the carriage body 10 while the belt-type rail head rectifier 2 is lifted up from the rail R. This is very convenient when moving.

  As shown in FIGS. 4 and 5, the correcting machine main body 24 includes a rectangular casing 24 a extending in the longitudinal direction of the rail R, and a second motor that is rotated by a drive current from a generator (not shown). 24b and a pair of grinding belt rotating pulleys 24c1 and 24c2 that are arranged at a predetermined interval in the longitudinal direction of the rail R and are rotated by the second motor 24b via the driving pulley 24b1, the driving belt 24b2, and the like. The grinding belt 24d is stretched around the pulleys 24c1 and 24c2 for rotating the grinding belt.

  On the outer surface of the grinding belt 24d, a polishing part (grinding material) or a fine grinding stone is applied or pasted to provide a polishing part. The polishing part is in the longitudinal direction of the rail R, and this self-propelled Rotating in the direction opposite to the traveling direction of the rail-type head portion correcting device 1, and the pressing plate / roller lifting mechanism 24g moves the pressing plate 24e or the pressing roller 24f relatively up and down as will be described later. Either one of 24e or the pressing roller 24f is pressed from the inside of the grinding belt 24d toward the head of the rail R to grind the head (tread) of the rail R.

  The pressing plate / roller elevating mechanism unit 24g uses a link mechanism to elevate the pressing plate 24e with respect to the casing 24a, and elevates the pressing roller 24f with respect to the casing 24a using the bow gauge 24g21. And a pressing roller lifting / lowering part 24g2.

  As shown in FIGS. 5 and 7, the pressing plate lifting / lowering part 24g1 connects the upper ends of the two L-shaped links 24g11 and 24g12 so as to be rotatable by the horizontal link 24g13, while the two L-shaped links 24g11. 24g12 is fixed to an elevating frame 24a1 in which a pressing plate 24e is fixed by bolts, nuts, screws or the like without using a spring, and both sides of the horizontal link 24g13 are connected by wires 24g14. The pressing plate 24e fixed to the lifting frame 24a1 is moved up and down by pulling with the wire pulleys 24g15 and 24g16 rotated by the third motor 24g15.

  The elevating frame 24a1 is attached to the casing 24a of the cutter main body 24 so as to be able to be raised and lowered. And since the raising / lowering frame 24a1 and the pressing plate 24e itself are comprised from heavy steel materials etc., they can grind by pushing the grinding belt 24d from the back side with those weight.

  The pressing roller lifting / lowering portion 24g2 has a bow gauge 24g21 extending in the longitudinal direction of the rail R attached to the lifting / lowering frame 24a1 and rotary pulleys 24g22 and 24g22 provided on the front and rear sides of the lifting / lowering frame 24a1. 24f is moved in the longitudinal direction of the rail R, moved between the retracted (retracted) position 24A2 and the grinding position 24A3, and moved vertically by being guided by contacting the guide surface of the bow gauge 24g21 from below. (Chain) 24g23 is provided.

  For this reason, in the correction machine main body 24, the pressing roller base portion 24f2 that rotatably supports the base portion of the roller support portion 24f1 that rotatably supports the pressing roller 24f is attached to the moving belt (chain) 24g23 and moved. The belt (chain) 24g23 is moved by rotating one rotary pulley 24g22 via a belt 24g28 that the fourth motor 24g24 hangs around the rotary pulleys 24g25 to 24g27.

  When the moving belt (chain) 24g23 is rotated by the rotating pulleys 24g22 and 24g22, the roller support portion 24f1 is swung (swinged) by coming into contact with the guide surface of the gauge 24g21 from below at the intermediate portion of the roller support portion 24f1. The pressing roller 24f is moved up and down.

<Operation of Self-propelled Rail Head Grinding Device 1 and Belt Type Rail Head Grinding Machine 2>
Next, the operation of the self-propelled rail head correcting device 1 and the belt-type rail head correcting device 2 of the present embodiment configured as described above will be described.

<When grinding the head of the rail R by pressing the grinding belt 24d against the rail R with the pressing plate 24e>

  When the grinding belt 24d is pressed against the rail R by the pressing plate 24e of the belt-type rail head cutter 2 and the head of the rail R is ground, as shown in FIG. 4 and FIG. The plate of the pressing plate 24e is projected by causing the roller lifting portion 24g2 to lower the plate-like pressing surface 24e1 of the pressing plate 24e lower than the rail head-shaped pressing surface 24f4 of the pressing roller 24f, that is, to the head side of the rail R. The shaped pressing surface 24e1 presses the inner side of the grinding belt 24d toward the rail R, and presses the outer grinding surface of the grinding belt 24d against the rail R for grinding.

  Specifically, as shown in FIG. 5, the pressing roller lifting / lowering unit 24g2 rotates the belt 24g28 that is wound around the rotating pulleys 24g25 to 24g27 by the rotation of the fourth motor 24g24, thereby causing the pressing roller 24f to be a bow and the gauge 24g21. The guide head is moved to the retracted (retracted) position 24A2 while being guided according to the guide surface, and the rail head-shaped pressing surface 24f4 of the pressing roller 24f is higher than the plate-shaped pressing surface 24e1 of the pressing plate 24e, that is, the plate-shaped pressing of the pressing plate 24e. The surface 24e1 is brought closer to the head of the rail R.

  On the other hand, the pressing plate elevating part 24g1 moves the horizontal link 24g13 to the left side by moving the horizontal link 24g13 to the left side by increasing the length of the left wire 24g14 from the right side of the third motor 24g15 in FIG. The head 24a1 and the pressing plate 24e can grind the head of the rail R by pushing the grinding belt 24d from the back side by its own weight.

  Here, as shown in FIGS. 8 to 9, when the angle adjustment handle 23b5 of the angle adjustment setting plate 23b is rotated, the angle adjustment screw 23b4 is rotated and the centering nut 25b3 screwed into the angle adjustment screw 23b4 is rotated. Moves to the left and right, and the upper part of the angle setting attachment plate 25b of the centering rod 25b2 to which the centering nut 25b3 is attached moves, so that the cutting angle of the cutting mechanism 24 with respect to the rail R is set or adjusted. As shown in FIG. 8, the pressing plate 24e pushes the grinding belt 24d from the back side to grind the tread of the head of the rail R, or the pressing plate 24e pushes the grinding belt 24d back as shown in FIGS. By pushing from the side, the left and right corners of the head of the rail R can be ground.

  Here, the grinding belt 24d rotates when the second motor 24b rotates the pair of rotating pulleys 24c1 and 24c2 via the driving pulley 24b1 and the belt 24b2, and the rotation direction thereof is the self-propelled rail head. The head of the rail R is rotated by rotating in the direction opposite to the traveling direction of the correcting device 1 so that a brake (resistance) is applied to the self-propelled rail head correcting device 1 by the grinding. To do.

  That is, in FIGS. 4 and 5, when the self-propelled rail head correcting device 1 advances in the right direction, the grinding belt 24 d rotates counterclockwise, while the traveling rail head correcting device 1 moves to the left. When proceeding in the direction, the grinding belt 24d rotates counterclockwise so that the self-propelled rail head correcting device 1 is braked (resistance) by the grinding belt 24d.

  Therefore, according to the self-propelled rail head grinding apparatus 1, it can be surely ground so that the rail R does not run away.

  Further, the pressing plate 24e has a flat plate-like pressing surface 24e1, and the predetermined length L in the longitudinal direction of the rail R of the flat pressing surface 24e1 is an uneven pitch of wavy wear generated on the rail R, That is, the length is longer than the distance from the peak of the peak (convex) to the peak of the next peak (convex).

  For example, in the case of 50 mm to 200 mm of the wavy wear uneven pitch generated in the longitudinal direction of the rail R, the length L of the pressing plate 24 e in the longitudinal direction of the rail R is 200 mm or more which is the maximum pitch of the wavy wear unevenness generated. Of length.

  Therefore, in the self-propelled rail head correcting device 1 and the belt-type rail head correcting device 2 of the present embodiment, the length L of the pressing plate 24e in the longitudinal direction of the rail R is caused by the wavy wear generated in the rail R. Therefore, even when the wavy wear uneven pitch is long, the flat pressing surface 24e1 of the pressing plate 24e does not move up and down following the wavy wear unevenness, and the wavy wear is surely prevented. Can be ground.

  Further, in the self-propelled rail head correcting device 1 and the belt-type rail head correcting device 2 of the present embodiment, unlike the belt-type rail head correcting device described in Patent Document 1, the pressing plate is used. 24e is directly fixed to the elevating frame 24a1 by screws 14b or the like without using an elastic member such as a spring with respect to the frame 11.

  Therefore, also in this point, in the self-propelled rail head correcting device 1 and the belt-type rail head correcting device 2 of the present embodiment, the flat pressing surface 24e1 of the pressing plate 24e follows the unevenness of the wavy wear. The vertical movement can be prevented, and the wavy wear of the head of the rail R can be reliably ground.

<When grinding the head of the rail R by pressing the grinding belt 24d against the rail R with the pressing roller 24f>

  When the grinding belt 24d is pressed against the rail R by the pressing roller 24f of the belt-type rail head grinder 2 and the head of the rail R is ground, as shown in FIG. 6 and FIG. The rail of the pressing roller 24f is projected by causing the rail head-shaped pressing surface 24f4 of the pressing roller 24f to be lower than the plate-shaped pressing surface 24e1 of the pressing plate 24e, that is, to protrude toward the head side of the rail R by the roller lifting unit 24g2. The head-shaped pressing surface 24f4 presses the inner side of the grinding belt 24d toward the rail R and presses the outer polishing surface of the grinding belt 24d against the rail R for grinding.

  Specifically, the pressing plate lifting / lowering part 24g1 is configured so that the length of the right and left wires 24g14 of the third motor 24g15 is substantially the same in FIG. The plate-like pressing surface 24e1 of the pressing plate 24e is moved upward, that is, away from the rail R.

  On the other hand, as shown in FIG. 7, the pressing roller lifting / lowering part 24g2 rotates the belt 24g28 that is wound around the rotating pulleys 24g25 to 24g27 by the rotation of the fourth motor 24g24, thereby causing the pressing roller 24f to be a bow and guide surface of the gauge 24g21. The rail head-shaped pressing surface 24f4 of the pressing roller 24f is lower than the plate-shaped pressing surface 24e1 of the pressing plate 24e, that is, close to the head of the rail R.

  Therefore, according to the self-propelled rail head correcting device 1 and the belt-type rail head correcting device 2 of the present embodiment, the rail head-shaped pressing surface 24f4 of the pressing roller 24f is the plate-shaped pressing surface of the pressing plate 24e. 24e1 protrudes toward the head of the rail R, so that the rail head-shaped pressing surface 24f4 of the pressing roller 24f pushes the inner side of the grinding belt 24d toward the rail R, and the outer grinding surface of the grinding belt 24d moves to the rail R. Can be pressed to grind.

  Here, the rail head-shaped pressing surface 24f4 of the pressing roller 24f is formed so that the cross-sectional shape substantially matches the cross-sectional shape of the head of the rail R. Therefore, the self-propelled rail head correction of this embodiment is performed. According to the apparatus 1 and the belt-type rail head cutter 2, as shown in FIGS. 4, 5, and 8 to 10, the inner surface of the grinding belt 24 d is moved to the rail R by the flat pressing surface 24 e 1 of the pressing plate 24 e. After grinding the wavy wear on the head of the rail R, the inner side of the grinding belt 24d is moved inside the grinding belt 24d by the rail head-shaped pressing surface 24f4 of the pressing roller 24f as shown in FIGS. Finish grinding can be performed to restore the shape of the head of the rail R by pushing toward the head.

  As a result, the head R of the rail R can be efficiently corrected by the single self-propelled rail head correcting device 1 and the belt-type rail head correcting device 2.

  Further, the self-propelled rail head correcting device 1 of the present embodiment is provided with slide mechanism portions 14a, 14b, rail following rollers 21a, 21b, heights before and after the belt-type rail head correcting device 2 of the present embodiment. Since the holding rollers 22a and 22b are provided, even if the rail R has slack or meandering, it is possible to perform self-propelled correction by automatically following the slack or meandering with a simple configuration.

DESCRIPTION OF SYMBOLS 1 Self-propelled rail head part correction apparatus 2 Belt type rail head part correction machine 10 Bogie body 11 Frame 12a, 12b Wheel 13 Drive part 13a First motor 14a, 14b Slide mechanism part 15 Axle 21a, 21b Rail following roller 22a , 22b Height holding roller 23a, 23b Angle adjustment setting plate 23b1 Right side extension 23b2 Left side extension 23b3 Angle setting through hole 23b4 Angle adjustment screw 23b5 Angle adjustment handle 24 Cutting mechanism 24a Cutting machine body 24a1 Lifting frame 24A2 Storage ( Retraction) position 24A3 grinding position 24b second motor 24c1, 24c2 rotating pulley 24d grinding belt 24e pressing plate 24e1 flat plate pressing surface 24f pressing roller 24f4 rail head shape pressing surface 24g pressing plate / roller lift構部 24g1 pressing plate supporting portion 24g15 third motor 24g2 pressing roller elevating unit 24g21 bow gauge 24g24 fourth motor 25a, 25b angle setting mounting plate

Claims (3)

A belt-type rail head corrector that corrects the head of the rail,
A rail head-shaped pressing surface that substantially matches the cross-sectional shape of the rail head is provided on the inside of the grinding belt spanned between a pair of grinding belt rotating pulleys provided at a predetermined interval on the main body of the grinding machine. While providing a pressing roller and a pressing plate having a flat plate-shaped pressing surface having a predetermined length in the longitudinal direction of the rail,
By grinding the pressing roller and the pressing plate relatively up and down, the grinding belt is pressed against the rail head by the flat pressing surface of the pressing plate or the rail head-shaped pressing surface of the pressing roller, and is ground. A belt-type rail head straightener equipped with a pressing plate and roller lifting mechanism. The belt-type rail head straightener according to claim 1,
A predetermined length in the longitudinal direction of the rail on the plate-like pressing surface of the pressing plate is equal to or greater than the pitch interval of the unevenness of wavy wear formed on the tread surface of the rail head. Machine. A cart body having a frame narrower than the interval between the rails and traveling on the rails by wheels on both sides provided on the front and rear sides of the frame; and
The belt-type rail head straightener according to claim 1 or 2, wherein the belt main body is provided on a side of at least one side of the carriage body so as to be slidable in a direction perpendicular to the rail via a slide mechanism. A traveling rail head correction device,
Before and after the belt type rail head straightener,
A rail follower roller that makes the belt type rail head corrector follow the rail while hitting both sides of the rail head to be corrected;
Any one of a plurality of rotating rollers arranged closely in the longitudinal direction of the rail hits the rail head, so that the belt-type rail head straightener is always held at a certain height with respect to the rail head. A self-propelled rail head shaving device comprising a height holding roller.

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