JP2018204225A - Rail polishing device - Google Patents

Abstract

To well polish the flank of a head part of a rail.SOLUTION: A rail polishing device 10 includes a vehicle body 20 movable along a rail R, polishing materials 41, 42 that polish the flank of a head part R1 of the rail R, and a rotary driving source 46 that rotates the polishing materials 41, 42. Polishing surfaces 411 of the polishing materials 41, 42 for polishing the flank of the head part R1 of the rail R are supported so as to be swingable with respect to the rotation axis of the polishing materials 41, 42. Therefore, following bending and deformation of the flank of the head part of the rail, the polishing surfaces 411 of the polishing materials 41, 42 can be abutted and it is possible to polish well.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a rail polishing apparatus for removing rust on the side surface of a rail head.

Railroad rails are regularly inspected by ultrasonic flaw detection for maintenance such as cracks and scratches.
This ultrasonic inspection is performed from the side surface of the rail head, but if the side surface is rusted, there is a risk that accurate inspection results may not be obtained. It was necessary to remove the rust by polishing the side surface of the part. However, the work of polishing a predetermined range on the side surface of the rail head with a tool such as a grinder has been a heavy burden on the operator.

  On the other hand, a rail polishing apparatus that polishes the tread surface of the rail head has been conventionally known, but this rail polishing apparatus cannot polish the side surface of the rail head (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 2006-142112

  The rail polishing apparatus polishes the tread by rotating a grindstone that contacts the tread on the rail head with a motor. Therefore, it is conceivable to apply this rail polishing device to polishing the side surface of the rail head by modifying the direction of the grindstone, but the side surface of the rail head is deformed compared to the tread surface. In many cases, the rail itself may be curved, and it is difficult to divert the tread surface polishing device having a relatively stable shape to the side surface polishing as it is.

  An object of the present invention is to provide a rail polishing apparatus capable of satisfactorily polishing the side surface of the rail head.

The invention according to claim 1 is a rail polishing apparatus,
A vehicle body movable along the rail,
An abrasive for polishing a side surface of the head of the rail;
In a rail polishing apparatus comprising a rotational drive source for rotating the abrasive,
The polishing material is supported so that at least a polishing surface for polishing a side surface of a head portion of the rail can swing with respect to a rotating shaft of the polishing material.

The invention according to claim 2 is the rail polishing apparatus according to claim 1,
The polishing material is supported by a biaxial gimbal structure so that the polishing surface can swing with respect to the rotating shaft of the polishing material.

The invention according to claim 3 is the rail polishing apparatus according to claim 2,
The biaxial gimbal structure is a gimbal spring.

The invention according to claim 4 is the rail polishing apparatus according to any one of claims 1 to 3,
The abrasive has a first abrasive that polishes one side of the head of the rail, and a second abrasive that polishes the other side of the head of the rail,
A rotational force is applied from the rotational drive source so that the rotation direction of the first abrasive and the rotation direction of the second abrasive viewed from one direction orthogonal to the rail are opposite to each other. It is characterized by.

The invention according to claim 5 is the rail polishing apparatus according to any one of claims 1 to 4,
Wheels provided on the vehicle body and traveling along the rails;
And a traveling drive source for the wheels.

A sixth aspect of the present invention is the rail polishing apparatus according to the fifth aspect,
A detection unit for detecting a rotational speed of the travel drive source or a travel speed of the vehicle body;
And a control unit that controls the rotation drive source to start driving when the rotation speed or the traveling speed detected by the detection unit reaches a specified value.

The invention according to claim 7 is the rail polishing apparatus according to any one of claims 1 to 6,
The abrasive is supported so as to be able to contact and separate from the side surface of the head of the rail,
An elastic member that pressurizes the abrasive in a direction away from the side surface of the head of the rail;
And a manual operation unit for bringing the abrasive into contact with the side surface of the head of the rail.

The invention according to claim 8 is the rail polishing apparatus according to claim 7,
The rail polishing apparatus according to claim 7, wherein a casing that supports the abrasive and the manual operation unit is supported so as to be movable up and down with respect to the vehicle body.

The invention according to claim 9 is the rail polishing apparatus according to any one of claims 1 to 8,
The polishing material is supported in a state where a rotation axis of the polishing material is inclined in a direction in which the polishing surface side descends with respect to a horizontal direction.

The invention according to claim 10 is the rail polishing apparatus according to any one of claims 1 to 9,
A dust collector that collects polishing scraps generated during the polishing of the rail is provided.

The invention according to claim 11 is the rail polishing apparatus according to any one of claims 1 to 10,
The vehicle body runs on one rail,
An outrigger for supporting the vehicle body by another rail parallel to the traveling rail is provided.

  In the present invention, since the polishing surface for polishing the side surface of the rail head portion of the abrasive is supported so as to be swingable, a portion where the side surface of the rail head portion is deformed or a curved portion due to the bending of the rail In addition, it is possible to cope with the fact that the polishing surface fluctuates and to realize good polishing.

It is a left view of the rail polisher which is embodiment of invention. It is a top view of a rail polisher. It is a longitudinal cross-sectional view of the grinding | polishing mechanism of a rail grinding | polishing apparatus. 4A is a rear view of the abrasive, and FIG. 4B is a cross-sectional view taken along line VV in FIG. 4A. FIG. 5A is a cross-sectional view along the rotation center line of the support structure in a state where the abrasive is supported, and FIG. 5B is a cross-section along a rotation center line in the support structure where the abrasive is supported. It is sectional drawing. 6A is a front view of the support base viewed from the abrasive side, FIG. 6B is a cross-sectional view taken along line WW of FIG. 6A, and FIG. 6C is the back of the support base. FIG. It is a front view of a leaf | plate spring. It is the rear view which looked at the outrigger with which the vehicle body was mounted | worn from back. It is a block diagram which shows the control system of a rail grinding | polishing apparatus. It is a flowchart which shows operation control of the rail polisher by a control part.

[Outline of Embodiment]
As an embodiment of the invention, a rail polishing apparatus 10 for polishing a side surface of a head R1 of a rail R of a railway vehicle will be described with reference to the drawings. 1 is a left side view of the rail polishing apparatus 10, and FIG. 2 is a plan view.
In the following description, the front side in the traveling direction in which the rail polishing apparatus 10 travels along the rail R is “front”, the rear side in the traveling direction is “rear”, the left hand side is “left” with the front side facing forward, and the front side. It is assumed that the right hand side is defined as “right” in a state of facing, and the front-rear direction, the left-right direction, and the up-down direction are all orthogonal to each other.

  The rail polishing apparatus 10 includes a vehicle body 20 having front and rear wheels 21 and 22 as front and rear wheels that travel along one rail R of a pair of rails, and a drive unit 30 (see FIG. 2 and FIG. 3, a power transmission device (not shown) that transmits power from the drive unit 30 to the front wheels 21 and the rear wheels 22, and a side surface of the traveling rail R (hereinafter referred to as the rail head). An outrigger that keeps the vehicle body 20 horizontal by means of a polishing mechanism 40 that polishes the side of R1), a dust collector 70 that collects polishing debris generated during polishing of the rail R, and another rail R parallel to the traveling rail R 80 (see FIG. 8) and a control unit 100 for controlling the above-described units.

[Body]
The vehicle body 20 is configured by a rectangular frame as viewed from above, and pipe frames 23 and 23 are fixedly installed in a standing state on the front end portion and the middle portion of the upper surface portion, and the two pipe frames 23, A drive unit 30 is mounted between the two.
A dust collection container 72 of a dust collector 70, which will be described later, is placed on the rear half of the upper surface of the vehicle body 20 so as to be removable upward.
Further, a polishing mechanism 40 is provided at the rear end of the vehicle body 20.

Further, a front wheel 21 and a rear wheel 22 as wheels are rotatably mounted at the center part in the left-right direction at the lower front end and rear end of the vehicle body 20, respectively.
A pair of guide wheels 24 are provided in the vicinity of the rear of the front wheel 21. The pair of guide wheels 24 are separated from each other by the width of the rail head portion R1 in the left-right direction. The rail head portion R1 is inserted between the pair of guide wheels 24 so that the vehicle body 20 can travel without being shifted left and right with respect to the rail R. To guide.
The pair of guide wheels 24 is supported by a swing arm 241 that can swing up and down, and the swing arm 241 is connected to a spring 242 that biases the pair of guide wheels 24 downward. .
As a result, the pair of guide wheels 24 normally maintain the state in which the rail head portion R1 is inserted by the spring 242. Further, when there is a bond or the like at the joint of the rail R, the pair of guide wheels 24 is pushed upward by the swinging arm 241 so as to avoid the bond, and the pair of guide wheels 24 is caught by the bond or the like. A situation that occurs and hinders traveling can be avoided.

[Drive unit]
The drive unit 30 travels as a gasoline engine 31, a fuel tank 32, a generator (not shown) that generates power by torque output of the gasoline engine 31, and a travel drive source that rotates by the generated power of the generator. A motor 33 and a motor drive circuit 34 are provided.
A dial-type speed controller 35 that sets the traveling speed of the rail polishing apparatus 10 is provided at the upper end portion of the column that is erected from the upper right side of the rear end portion of the vehicle body 20.
The signal value of the output signal of the speed controller 35 is changed by a dial operation, and the output signal is input to the control unit 100. The motor drive circuit 34 drives the traveling motor 33 at a rotational speed corresponding to the signal value input from the speed controller 35 through the control unit 100.
Further, the traveling motor 33 is provided with an encoder 36 (see FIG. 9) as a detection unit for detecting the rotation speed, and the rotation speed detected by the encoder 36 is input to the control unit 100.

[Power transmission device]
The power transmission device is provided on the lower side inside the vehicle body 20, and a gear transmission mechanism including a shaft and gears for transmitting the output torque of the traveling motor 33 to the front wheels 21 and the rear wheels 22, and a friction clutch plate are separated from each other. The clutch device is configured to switch connection and disconnection of torque transmission from the traveling motor 33 to the gear transmission mechanism by operation.
The gear transmission mechanism transmits constant speed rotation to the front wheel 21 and the rear wheel 22. Further, the clutch device is switched between connection and disconnection of torque transmission by a manual operation by a clutch lever (not shown) erected on the rear upper surface of the vehicle body 20.

[Polishing mechanism: schematic configuration]
FIG. 3 is a longitudinal sectional view of the polishing mechanism 40 of the rail polishing apparatus 10. As shown in FIGS. 1 to 3, the polishing mechanism 40 rotates the abrasives (first abrasive 41 and second abrasive 42) that polish the side surface of the rail head R <b> 1, and the abrasives 41 and 42. A polishing motor 46 as a rotational drive source to be driven, a transmission mechanism 50 for transmitting the torque of the polishing motor 46 to the abrasives 41 and 42, a casing 43 incorporating the transmission mechanism 50, and a rail head of the abrasives 41 and 42 The manual operation part 44 which inputs the contact / separation operation | movement with respect to the side surface of part R1 and the support mechanism 45 which supports the casing 43 are provided.

  The polishing motor 46 is fixedly mounted on the upper portion of the casing 43 and is driven by obtaining electric power from the generator of the drive unit 30. The polishing motor 46 is fixed at the upper part of the casing 43 with the output shaft directed vertically downward.

[Polishing mechanism: casing]
As shown in FIG. 3, the casing 43 is substantially gate-shaped when viewed from the rear, and has a shape having an opening 431 whose lower center is opened downward. Further, side covers 433 are provided on the left and right side surfaces to cover the transmission mechanism 50 supported inside.
The front end of the casing 43 is supported by the support mechanism 45 so as to be movable up and down with respect to the vehicle body 20.

[Polishing mechanism: support mechanism]
The support mechanism 45 includes an upper link member 451 and a lower link member 452 that respectively support the left and right side surfaces of the front end portion of the casing 43.
The upper link member 451 and the lower link member 452 on each side are equal in length and are disposed in parallel between the vehicle body 20 and the casing 43, and both end portions of the link members 451 and 452 are along the left-right direction. It is connected so that it can rotate around the axis.
Therefore, as shown in FIG. 1, the vehicle body 20, the casing 43, and the link members 451 and 452 constitute a four-bar linkage mechanism, and the casing 43 moves up and down while maintaining a fixed posture with respect to the vehicle body 20. Is possible.

Since the casing 43 is supported so as to be movable up and down as described above, the rail head portion R1 can be inserted into the opening 431 by moving downward.
And the guide roller 432 which contact | abuts from the top with respect to the tread surface of the rail head part R1 is provided in the inner upper surface of the opening part 431, and the casing 43 can maintain fixed height with respect to the rail R. it can. The guide roller 432 is supported so as to be rotatable about an axis along the left-right direction, and the casing 43 can move smoothly along the rail R when the vehicle body 20 travels.

[Polishing mechanism: abrasive]
The abrasive is composed of a first abrasive 41 that polishes the left side of the rail head R1 and a second abrasive 42 that polishes the right side of the rail head R1, and the first abrasive 41 is the casing 43. The second abrasive 42 is rotatably supported on the inner right side surface of the opening 431 of the casing 43. The second abrasive 42 is rotatably supported on the inner left side surface of the opening 431.
The first abrasive 41 and the second abrasive 42 have the same structure except that they are arranged symmetrically. Further, the structure for transmitting torque to the first abrasive 41 by the transmission mechanism 50 and the support structure 60 described later and the structure for transmitting torque to the second abrasive 42 are also arranged symmetrically. Are the same. Therefore, in the following, the same portions of the first abrasive 41 and the second abrasive 42 are denoted by the same reference numerals, and only one of them will be described, and redundant description will be omitted. Similarly, with regard to the configuration for transmitting torque to the first abrasive 41 and the configuration for transmitting torque to the second abrasive 42, the same components are denoted by the same reference numerals, and only one of them will be described. The description to be omitted is omitted.

The first abrasive 41 is supported on the right end portion of a rotation shaft 51 of a transmission mechanism 50 described later with the polishing surface 411 directed to the right, and the rotation shaft 51 is in the left-right direction (horizontal direction). The first polishing material 41 is inclined at an angle θ in the direction in which the polishing surface 411 side of the first polishing material 41 descends. The inclination angle θ is a direction inclined at a ratio of the downward length 1 to the horizontal length 40 (θ = 1.43 °). The polishing surface 411 of the first abrasive 41 is perpendicular to the rotation shaft 51.
Further, since the second abrasive 42 is symmetrical with the first abrasive 41, the second abrasive 42 is supported on the left end portion of the rotation shaft 51 with the polishing surface 411 facing the left side, and the rotation shaft 51. Is inclined at an inclination angle θ (θ = 1.43 °) in the direction in which the polishing surface 411 side of the second abrasive 42 descends with respect to the left-right direction (horizontal direction).
The inclination angles of the polishing surfaces 411 of the abrasives 41 and 42 match the inclination angles of the left and right side surfaces of the rail head portion R1, and the polishing surfaces 411 of the respective polishing materials 41 and 42 are individually applied during polishing. It is possible to satisfactorily contact the left and right side surfaces of the rail head portion R1.

Each of the abrasives 41 and 42 is supported by the rotating shaft 51 via the support structure 60.
4A is a rear view of the abrasives 41 and 42 as viewed from the side opposite to the polishing surface 411 (referred to as the back surface), and FIG. 4B is a cross section taken along the line VV in FIG. 4A. FIG.
As shown in the figure, the abrasives 41 and 42 have a cylindrical shape and rotate around the center line thereof. A circular polishing surface 411 is formed on the entire surface of the abrasives 41 and 42 facing the rail head portion R1. For the polishing surface 411, for example, an artificial whetstone is used.

On the back side of the abrasives 41 and 42, a pair of convex portions 412 projecting toward the rotating shaft 51 are formed at both ends in the diametrical direction of rotation (upper end and lower end in FIG. 4A). . The projecting end surface of the projecting portion 412 is smooth, and a screw hole 413 into which a set screw 64 for connecting the abrasives 41 and 42 to a leaf spring 62 of the support structure 60 described later is screwed is formed at the center of the projecting end surface. Is formed.
Further, an edge portion 414 for aligning a leaf spring 62 of the support structure 60 described later is provided on the outer edge portion of the convex portion 412 in the rotational radius direction.

  Further, on the back side of the abrasives 41 and 42, both ends in the diametric direction perpendicular to the diametrical direction where the pair of convex portions 412 are arranged (the left end and the right end in FIG. 4A) are on the polishing surface side. A pair of relief holes 415 that do not penetrate through are formed. These clearance holes 415 are provided so that the abrasives 41 and 42 do not interfere with the heads of set screws 63 that connect the support base 61 of the support structure 60 and the leaf spring 62 described later.

[Polishing mechanism: support structure]
5A and 5B are cross-sectional views of two different cross sections along the rotation center line in the support structure 60 in a state where the abrasives 41 and 42 are supported.
The support structure 60 includes a support base 61 that individually supports the abrasives 41 and 42, and a leaf spring 62 that is interposed between the support base 61 and the abrasives 41 and 42.

6A is a front view of the support base 61 viewed from the abrasive 41 and 42 side (referred to as the front), and FIG. 6B is a cross-sectional view taken along the line WW in FIG. 6A. 6 (C) is a rear view as seen from the surface (rear surface) opposite to the front surface of the support base 61. FIG.
As shown in the figure, the support base 61 has a cylindrical shape, is disposed concentrically with the abrasives 41 and 42, and rotates around its center line.

On the front side of the support base 61, a pair of convex portions 612 projecting toward the abrasives 41 and 42 are formed at both ends in the diametrical direction of rotation (the upper end and the lower end in FIG. 6A). Yes. The protruding end surface of the projecting portion 612 is smooth, and a screw hole 613 into which a set screw 63 for connecting the support base 61 and the leaf spring 62 is screwed is formed at the center of the protruding end surface.
Further, an edge portion 614 for aligning the leaf spring 62 is provided on the outer edge portion of the convex portion 612 in the rotational radius direction.

  Further, a screw hole 611 through which a bolt 511 connecting the rotary shaft 51 and the support base 61 is screwed is formed in the center of the support base 61. A substantially rectangular recess 616 is formed around the screw hole 611 on the back surface of the support base 61. The rotary shaft 51 includes a rectangular convex portion that can be inserted into the concave portion 616 at the connection end portion with the support base 61. By fitting the convex portion into the concave portion 616, Will rotate together.

  Moreover, the both ends (the left end part and the right end part in FIG. 6 (A)) in the diametrical direction orthogonal to the diametrical direction on the back surface side of the support base 61 do not penetrate to the front side. A pair of relief holes 615 are formed. These relief holes 615 are provided so that the support base 61 does not interfere with the head of the set screw 64 that connects the plate spring 62 and the abrasives 41 and 42.

FIG. 7 is a front view of the leaf spring 62. The leaf spring 62 is disposed concentrically between the support base 61 and the abrasives 41 and 42 and connects the support base 61 and the abrasives 41 and 42.
The leaf spring 62 is made of a plate-like elastic metal and has flexibility.
The leaf spring 62 includes two pairs of arm portions 622 and 623 extending from the annular central portion 621 in two diametrical directions orthogonal to each other.

As shown in FIG. 5A, each of the pair of arm portions 622 has a through hole 624, and each arm portion 622 has a set screw 63 inserted into each through hole 624. And the pair of convex portions 612 of the support base 61 are individually connected.
As shown in FIG. 5B, each of the other pair of arms 623 has a through-hole 625, and each arm 623 has a set screw 64 inserted into each through-hole 625. And the pair of convex portions 412 of the abrasives 41 and 42 are individually connected.

When the leaf spring 62 is connected between the support base 61 and the abrasives 41 and 42 as described above, the abrasives 41 and 42 are connected to the support base 61 with a pair of arm portions 622 and a pair of arm portions. 623 can swing around two diameter directions perpendicular to the rotation axis and orthogonal to each other.
That is, the leaf spring 62 functions as a gimbal spring to form a biaxial gimbal structure, and the polishing materials 41 and 42 can tilt in any direction of 360 ° with the polishing surface 411 centering on the rotation axis, Even when the side surface of the rail head portion R1 is curved or deformed along the rail R, the surface contact state can be maintained and good polishing can be performed.
The leaf spring 62 is selected so that the possible swing angle range is at least ± 1 ° or more for each of the two axes perpendicular to each other.

[Polishing mechanism: Transmission mechanism]
As described above, the configuration for transmitting torque to the first abrasive 41 in the transmission mechanism 50 and the configuration for transmitting torque to the second abrasive 42 are symmetrical structures, and therefore torque is transmitted to the first abrasive 41. A configuration for transmitting torque to the second abrasive 42 will be mainly described.

  As shown in FIG. 3, the transmission mechanism 50 includes a main drive bevel gear 52 fixedly mounted on the output shaft of the polishing motor 46, a driven bevel gear 53 meshing with the main drive bevel gear 52, and the driven bevel gear 53. , A first spur gear 55 fixedly connected to the transmission shaft 54, a second spur gear 56 meshing with the first spur gear 55, and a second spur gear 56. , A rotating shaft 51 that supports the first abrasive 41 via a support structure 60, and a rotating cylinder 58 provided on the outer periphery of the rotating shaft 51.

The transmission shaft 54 is supported in the upper left part in the casing 43 so as to be parallel and rotatable to the rotation shaft 51 of the first abrasive 41 described above. That is, the end of the first abrasive 42 on the rotating shaft 51 is supported in a state where it is inclined at an angle θ in the descending direction.
A driven bevel gear 53 is fixedly mounted on the right end of the transmission shaft 54, and torque is input from the main drive bevel gear 52 fixedly mounted on the output shaft of the polishing motor 46, so that the transmission shaft 54 rotates. Do.
As described above, the transmission shaft 54 is parallel to the rotation shaft 51 of the first abrasive 41 and is slightly inclined with respect to the left-right direction. However, the transmission bevel gear 52 and the driven bevel gear 53 Torque is transmitted well.

The first to third spur gears 55 to 57 are all supported so that the rotation shaft 51 of the first abrasive 41 can be rotated around a parallel rotation axis, and only the second spur gear 56 that performs relaying is supported. Becomes reverse rotation, and the first spur gear 55 and the third spur gear 57 rotate in the same direction.
The third spur gear 57 is mounted concentrically on the outer periphery of the rotating cylinder 58 via a key, and the third spur gear 57 and the rotating cylinder 58 integrally rotate together.

The rotating cylinder 58 has a cylindrical shape, and a rotating shaft 51 is inserted therein. The rotating cylinder 58 and the rotating shaft 51 are concentric, and a keyway is formed on the inner periphery of the rotating cylinder 58 and the outer periphery of the rotating shaft 51, and a key is disposed inside them. Therefore, the rotating cylinder 58 and the rotating shaft 51 also perform interlocking rotation integrally.
The key groove on the inner periphery of the rotating cylinder 58 or the key groove on the outer periphery of the rotating shaft 51 is formed sufficiently long with respect to the key 581. Thereby, the rotating shaft 51 can slide along the longitudinal direction with respect to the rotating cylinder 58.

The rotation shaft 51 has a through-hole formed at the center thereof, and a support base 61 of the support structure 60 is fastened and fixed by a bolt 511 penetrating the rotation shaft 51.
As described above, the rotating shaft 51 has a quadrangular prism-like convex portion at the end on the first abrasive 41 side, and is fitted by the substantially rectangular concave portion 616 of the support base 61, so that it is rotated by the bolt 511. When the support base 61 is fastened to the shaft 51, the rotating shaft 51 rotates integrally with the first abrasive 41 via the support structure 60.
Furthermore, since the rotating shaft 51 is slidable along the longitudinal direction with respect to the rotating cylinder 58, the polishing surface 411 of the first abrasive 41 is moved toward and away from the side surface of the rail head portion R1. be able to.

  Since the configuration for transmitting torque to the second abrasive 42 is symmetrical to the configuration for transmitting torque to the first abrasive 41, the driven bevel gear 53, the transmission shaft 54, and the first to third spur gears. 55-57, the rotating shaft 51, and the rotating cylinder 58 are all supported in a state where the rotating shaft is inclined at an angle θ in the direction in which the end of the second abrasive 42 in the rotating shaft 51 descends with respect to the left-right direction. ing.

Further, the driven bevel gear 53 on the first abrasive 41 side and the driven bevel gear 53 on the second abrasive 42 side are arranged symmetrically with respect to the vertical vertical axis, with respect to the main bevel gear 52. Therefore, when viewed from the same left and right direction, the driven bevel gear 53 on the first abrasive 41 side and the driven bevel gear 53 on the second abrasive 42 side are reversely rotated with each other. Is granted.
Therefore, the first abrasive 41 and the second abrasive 42 also rotate in opposite directions when viewed from the same left-right direction.
Both the first abrasive 41 and the second abrasive 42 may receive a drag along the longitudinal direction of the rail R due to sliding friction during polishing. When the rotation directions of the second abrasive 42 are opposite to each other, the drag along the rail R is also generated in the opposite direction and cancels out. Therefore, the traveling speed of the rail polishing apparatus 10 is caused by the drag along the rail R. Can be suppressed.

[Polishing mechanism: manual operation section]
The manual operation unit 44 also has a bilaterally symmetric structure for inputting the operation to the first abrasive 41 and the configuration for inputting the operation to the second abrasive 42, so that the operation is input to the first abrasive 41. The description will mainly be given, and the configuration for inputting the operation to the second abrasive 42 will be denoted by the same reference numerals, and redundant description will be omitted, and different points will be described supplementarily.

  As shown in FIGS. 1 to 3, the manual operation unit 44 includes a connection block 441 connected to the left end portion of the rotation shaft 51 of the first abrasive 41, and the first abrasive 41 via the connection block 441. Spring plunger 442 as an elastic member that presses the rail head R1 in the direction away from the side surface of the rail head portion R1, a handle 443 connected to the upper end of the connecting block 441, and a pair of upper and lower controls that restrict the operating direction of the handle 443 A link member 444 and a support bracket 445 that supports the restriction link member 444 are provided.

The connection block 441 is a long block, and is provided outside the left side surface of the casing 43 along the vertical direction.
And the lower end part of the connection block 441 is connected with the left end part of the rotating shaft 51 which protruded to the left from the left side surface of the casing 43 so that rotation is possible via a bearing. Note that the connecting block 441 is rotatable along the longitudinal direction of the rotating shaft 51 of the connecting block 441 because the connecting shaft 441 can rotate the rotating shaft 51 by the bearing, and the longitudinal direction of the rotating shaft 51 is interlocked with the rotating shaft 51. By the moving operation, the first abrasive 41 can be moved toward and away from the side surface of the rail head portion R1.

The spring plunger 442 is provided at an intermediate portion in the vertical direction of the connection block 441, and a plunger that protrudes with an elastic force by an internal spring (not shown) is brought into contact with the left side surface of the casing 43. For this reason, the connecting block 441 receives a pressing force in a direction away from the casing 43 to the left by the spring plunger 442, and the first abrasive 41 is always urged in a direction away from the side surface of the rail head R1. It is in the state.
That is, unless the rotation shaft 51 is pushed in manually against the spring plunger 442, the side surface of the rail head portion R1 is not polished by the first abrasive 41.

The lower portion of the handle 443 is oriented vertically (see FIG. 1), and the upper portion extends horizontally and rearward (slightly inclined to the left) (see FIG. 2).
One end of the pair of upper and lower restriction link members 444 is connected to a support shaft 446 along the vertical direction of the support bracket 445, and the other end is fixedly connected to the lower portion of the handle 443.
Further, each restriction link member 444 is directed in the same direction as the upper part of the handle 443 as viewed from above, and the restriction link member 444 and the handle 443 are integrally rotated about the support shaft 446. Can do.
By the turning operation of the handle 443, the connecting block 441 connected to the lower part thereof moves in the left-right direction, and the contact / separation movement of the first abrasive 41 with respect to the side surface of the rail head portion R1 can be operated.

In addition, since the structure which inputs operation into the 2nd abrasive 42 is a left-right symmetric structure, the upper part of the handle | steering-wheel 443 is extended horizontally and back (slightly inclined to right) (refer FIG. 2).
When the rear end portion of the handle 443 on the first abrasive 41 side and the rear end portion of the handle 443 on the second abrasive 42 side are operated to approach each other, the first abrasive 41 and the second abrasive 41 are operated. The polishing material 42 comes into contact with the left and right side surfaces of the rail head portion R1 so that the polishing can be performed, and the rear end portion of the handle 443 on the first polishing material 41 side and the rear end of the handle 443 on the second polishing material 42 side. When the parts are operated in a direction in which they are separated from each other, the first abrasive 41 and the second abrasive 42 are separated from the left and right side surfaces of the rail head portion R1 and become non-polished.

[Dust collector]
As shown in FIGS. 1 to 3, the dust collector 70 includes a dust-proof cover 71 that covers the lower side of the abrasives 41 and 42 in the opening 431 of the casing 43, and polishing dust in the opening 431 in a dust collection container 72. A suction fan 75 (see FIG. 9) for suctioning and a collection bag (not shown) for collecting the polishing dust sucked into the dust collecting container 72 are provided.

As shown in FIG. 3, the front, rear, left, right, and upper sides of the abrasives 41, 42 are surrounded by the inner wall of the opening 431 of the casing 43, and the lower part is covered with left and right dustproof covers 71.
Accordingly, only the space between the left and right dustproof covers 71 is open around the abrasives 41 and 42, but the rail head R1 is inserted into this portion during polishing, so the outside of the polishing dust Leakage can be greatly reduced.
Then, one end of a suction pipe (not shown) connected to a suction fan in the dust collecting container 72 is inserted into the opening 431 of the casing 43. This suction pipe is connected to an exhaust port for exhausting the dust into the dust collecting container 72, and sucks polishing dust scattered in the opening 431 from the suction pipe to the dust collecting container 72 side.

The inside of the dust collection container 72 is a duct, and the air inside is exhausted through a collection bag by a suction fan. For this reason, the inside of the dust collecting container 72 becomes a negative pressure, and the air in the opening 431 of the casing 43 is sucked together with the polishing dust through the suction pipe.
The dust container 72 can be removed from the upper surface of the vehicle body 20. The dust collecting container 72 is provided with a lid, and the collection bag can be taken out by opening the lid.

[Outrigger]
FIG. 8 is a rear view of the outrigger 80 attached to the vehicle body 20 as viewed from the rear.
Mounting holes 28 and 28 for mounting the outriggers 80 are formed at intermediate positions in the front-rear direction on the left and right side portions of the vehicle body 20. The outrigger 80 can be mounted in both the left and right mounting holes 28, 28, and when mounted, the outrigger 80 is in a state parallel to the left-right direction.
The outrigger 80 includes a roller 81 that rolls on the tread surface of the rail R, a support rod 82 that supports the roller 81 at the tip, and an internal hollow cylindrical body 83 into which the support rod 82 can be inserted. It is configured.

  The roller 81 is rotatably supported by a rotation axis parallel to the longitudinal direction of the outrigger 80.

One end of the cylindrical body 83 is open, and a round bar-like support rod 82 can be inserted. Further, the other end portion of the cylindrical body 83 is closed, and an insertion portion 831 for the mounting hole 28 whose diameter is smaller than that of the entire cylindrical body 83 is formed. The insertion portion 831 has a keyway (not shown) and is inserted into the mounting hole 28 via a key (not shown). As a result, the entire outrigger 80 rotates to prevent the roller 81 from falling off the tread surface of the rail R.
In addition, a ball rail head portion for preventing slipping that protrudes from the inner peripheral surface of the mounting hole 28 due to a back pressure by a spring protrudes inside the mounting hole 28, and an insertion portion 831 of the cylindrical body 83 is provided. A circumferential groove 832 formed on the outer peripheral surface of the outer peripheral surface engages with the ball when the insertion portion 831 is inserted to prevent the outrigger 80 from coming off.

The support rod 82 inserted into the other end portion of the cylindrical body 83 can move along the longitudinal direction, and thereby the length of the outrigger 80 can be adjusted. In FIG. 8, the rightmost rail R illustrated in the leftmost diagram with respect to the leftmost illustrated rail R shows an arrangement in the case of a standard gauge, and the rail R shown in the second from the right shows an arrangement in a case of a narrow gauge. Show.
As described above, when the gauge width is different by adjusting the movement of the support rod 82, for example, it is possible to cope with polishing of a standard gauge and a narrow gauge rail. Moreover, if it is in the expansion-contraction range of the support rod 82, it can respond to arbitrary gauge widths.
The cylindrical body 83 is provided with a screw hole that penetrates the cylindrical body 83, and a screw member such as a thumbscrew is screwed in to fix the adjustment length of the support rod 82 with respect to the cylindrical body 83. It is desirable to make it possible.

[Control unit]
FIG. 9 is a block diagram showing a control system of the rail polishing apparatus 10.
The control unit 100 of the rail polishing apparatus 10 is a control circuit including a memory that stores a predetermined control program therein and a processor that executes the program.
A traveling motor 33 is connected to the control unit 100 via a motor drive circuit 34, a polishing motor 46 is connected via a motor drive circuit 461, and a suction fan 75 is connected via a drive circuit 76. Yes.
The control unit 100 is connected to a speed controller 35, an operation panel 101 installed on the polishing motor 46, and an encoder 36 that detects the rotational speed of the traveling motor 33. The operation panel 101 is mainly provided with a start button, an emergency stop button, and the like for starting rail polishing.

[Operation of rail polishing equipment by control unit]
The operation control of the rail polishing apparatus 10 by the control unit 100 will be described based on the flowchart of FIG.
The front wheel 21 and the rear wheel 22 of the rail polishing apparatus 10 are placed on one of the rails, and if necessary, the outrigger 80 is mounted in either the left or right mounting hole 28 of the vehicle body 20.
When the polishing start instruction by pressing the start button is input from the operation panel 101 (step S1), the control unit 100 reads the traveling speed set by the speed controller 35 (step S3), and the traveling motor 33. Is started (step S5).

  Then, the control unit 100 reads the output signal of the encoder 36 and calculates the current traveling speed in the process in which the traveling motor 33 accelerates to the set traveling speed. Then, it is determined whether or not the calculated traveling speed by the traveling motor 33 has reached the set traveling speed (step S7).

The control unit 100 continues to monitor the output signal of the encoder 36 when the traveling speed has not been reached. When the traveling speed has been reached, the controller 100 drives the polishing motor 46 and the suction fan 75. Start (step S9).
The operator starts driving the polishing motor 46 as a signal, and pushes down the handle 443 to bring the guide roller 432 in the casing 43 into contact with the tread surface of the rail R.
Further, an operation of pulling the left and right handles 443 toward each other is performed. As a result, the first abrasive 41 and the second abrasive 42 in a rotating state are individually brought into contact with the left and right side surfaces of the rail head portion R1, and the side surface of the rail head portion R1 is moved toward the traveling direction of the vehicle body 20. Polishing is performed to remove rust on the surface.

Thereafter, the control unit 100 monitors re-pressing of the start button on the operation panel 101 (step S11), and when pressed, stops the polishing motor 46 (step S13). Further, when the start button on the operation panel 101 is pressed again, the motor drive circuit 34 stops the traveling motor 33.
Thereafter, the control unit 100 stops the suction fan 75 (step S15).
Then, the polishing operation is finished.

[Technical effects of the embodiment]
In the rail polishing apparatus 10, the first abrasive 41 and the second abrasive 42 are supported so that the polishing surface 411 for polishing the side surface of the rail head R1 can swing. Even when the side surface of R1 is curved or deformed, the first polishing material 41 and the polishing surface 411 of the second polishing material 42 can be brought into contact with each other to perform good polishing. Is possible.

In particular, since the leaf springs 62 that support the abrasives 41 and 42 function as gimbal springs that form a biaxial gimbal structure, each of the abrasives 41 and 42 is any of 360 ° with respect to the central axis of the polishing surface 411. It can be easily swung also in the direction, and better followability can be obtained with respect to the side surface of the rail head portion R1.
Further, since the biaxial gimbal structure is realized by the leaf spring, it is possible to avoid the complexity of the structure, to reduce the number of parts, and to reduce the production cost.

Further, the abrasive has a first abrasive 41 that polishes one side surface of the rail head portion R1, and a second abrasive 42 that polishes the other side surface of the rail head portion. A polishing motor rotation drive source so that the rotation direction of the first abrasive 41 and the rotation direction of the second abrasive 42 viewed from one orthogonal direction (left or right) are opposite to each other. Rotational force is applied.
As a result, both the first abrasive 41 and the second abrasive 42 may receive a drag along the longitudinal direction of the rail R due to sliding friction during polishing. When the rotation directions of the material 41 and the second abrasive 42 are opposite to each other, the drag along the rail R also reverses each other and cancels out. Therefore, the traveling speed of the rail polishing apparatus 10 is reduced by the drag along the rail R. It is possible to reduce the influence of changing, and it is possible to perform stable polishing on the side surface of the rail head portion R1.

  In the rail polishing apparatus 10, the front wheel 21 and the rear wheel 22 that travel along the rail R are provided in the vehicle body 20, and the traveling motor 33 for the front wheel 21 and the rear wheel 22 is provided. By appropriately controlling, the vehicle body 20 can be driven while maintaining a traveling speed suitable for polishing, and stable polishing can be performed on the side surface of the rail head portion R1.

The rail polishing apparatus 10 controls the polishing motor 46 to start driving when the traveling speed based on the rotational speed detected by the encoder 36 reaches a set traveling speed that is a predetermined value. 100.
Thus, the polishing can be started after the traveling speed of the rail polishing apparatus 10 is stabilized, and the polishing is started by starting the polishing in the low speed period when the traveling motor 33 starts up when the rail polishing apparatus 10 starts traveling. It is possible to effectively reduce the occurrence of excess.

Further, in the rail polishing apparatus 10, the abrasives 41 and 42 are supported so as to be able to contact and separate from the side surface of the rail head portion R1, and the abrasive materials 41 and 42 are separated from the side surface of the rail head portion R1. A spring plunger 442 for pressurization and a manual operation unit 44 for bringing the abrasives 41 and 42 into contact with the side surface of the rail head R1 are provided.
For this reason, the abrasives 41 and 42 are usually separated from the side surface of the rail head portion R1, and when polishing, the operator brings the abrasive materials 41 and 42 to the side surface by the manual operation unit 44. Since this is necessary, it is possible to avoid unintended polishing and reduce the occurrence of scratches and uneven polishing on the rail R.

  In the rail polishing apparatus 10, since the casing 43 that supports the abrasives 41 and 42 and the handle 443 is supported by the support mechanism 45 so as to be movable up and down, the rail R has a bond or a guide. In addition, the abrasives 41 and 42 can be easily retracted upward.

  In addition, the rail polishing apparatus 10 supports the abrasive heads 41 and 42 in a state where the rotating shaft 51 of the abrasives 41 and 42 is inclined in a direction in which the polishing surface 411 side is lowered with respect to the horizontal direction. The polishing surface 411 of the abrasives 41 and 42 can be satisfactorily brought into contact with the inclined side surface of the portion R1, and good polishing can be performed.

Further, since the rail polishing apparatus 10 includes the dust collector 70 that collects polishing scraps generated when the rail R is polished, it is possible to suppress scattering around the polishing scraps and to reduce suction by an operator. Become.
In particular, since the casing 43 is provided with a dustproof cover 71 that covers the lower side of the abrasives 41 and 42, it is possible to collect abrasive debris scattered around the abrasives 41 and 42 as much as possible without leaking. And more effective dust collection can be realized.

The vehicle body 20 of the rail polishing apparatus 10 includes an outrigger 80 that travels on one rail R by the front wheel 21 and the rear wheel 22 and supports the vehicle body 20 by another rail R parallel to the traveling rail R. For this reason, the vehicle body 20 of the rail polishing apparatus 10 can be stably maintained horizontally, and the tread surface of the rail R to be polished can be polished while maintaining a certain angle.

[Others]
Since the first abrasive 41 and the second abrasive 42 are each attached to the support structure 60 by screwing, the first abrasive 41 and the second abrasive 42 can be easily replaced. good.
Moreover, although the example which provides the 1st abrasive | polishing material 41 and the 2nd abrasive | polishing material 42 one each was shown, you may provide two or more with these same individuals. In that case, it is desirable to arrange each abrasive along the rail longitudinal direction.

  Further, in the rail polishing apparatus 10, the first polishing material 41 and the second polishing material 42 are supported so that the entire polishing materials 41, 42 are swingable with respect to the rotating shaft 51, thereby the polishing surface 411. Is swingable with respect to the rotating shaft 51, but only a part of the abrasives 41 and 42 including the polishing surface 411 may be swingable.

10 Rail polishing device 20 Car body 21 Front wheel (wheel)
22 Rear wheel
28 Mounting hole 30 Drive unit 33 Motor for travel (travel drive source)
35 Speed controller 36 Encoder (detection unit)
40 Polishing mechanism 41 First abrasive 411 Polishing surface 42 Second abrasive 43 Casing 431 Opening 44 Manual operation unit 442 Spring plunger (elastic member)
443 Handle 45 Support mechanism 46 Polishing motor (rotation drive source)
50 Transmission Mechanism 51 Rotating Shaft 60 Support Structure 61 Support Base 62 Leaf Spring (Gimbal Spring)
70 Dust collector 80 Outrigger 100 Control unit 101 Operation panel R Rail R1 Rail head

Claims (11)

A vehicle body movable along the rail,
An abrasive for polishing a side surface of the head of the rail;
In a rail polishing apparatus comprising a rotational drive source for rotating the abrasive,
The rail polishing apparatus, wherein the polishing material is supported so that at least a polishing surface for polishing a side surface of a head portion of the rail can swing with respect to a rotation shaft of the polishing material.   The rail polishing apparatus according to claim 1, wherein the polishing material is supported by a biaxial gimbal structure so that the polishing surface can swing with respect to a rotating shaft of the polishing material.   The rail polishing apparatus according to claim 2, wherein the biaxial gimbal structure is a gimbal spring. The abrasive has a first abrasive that polishes one side of the head of the rail, and a second abrasive that polishes the other side of the head of the rail,
A rotational force is applied from the rotational drive source so that the rotation direction of the first abrasive and the rotation direction of the second abrasive viewed from one direction orthogonal to the rail are opposite to each other. The rail polisher according to any one of claims 1 to 3, wherein the rail polisher is provided. Wheels provided on the vehicle body and traveling along the rails;
The rail polisher according to any one of claims 1 to 4, further comprising a traveling drive source for the wheels. A detection unit for detecting a rotational speed of the travel drive source or a travel speed of the vehicle body;
6. The control unit according to claim 5, further comprising: a control unit that controls the rotation drive source to start driving when a rotation speed or a traveling speed detected by the detection unit reaches a specified value. Rail polishing equipment. The abrasive is supported so as to be able to contact and separate from the side surface of the head of the rail,
An elastic member that pressurizes the abrasive in a direction away from the side surface of the head of the rail;
The rail polisher according to any one of claims 1 to 6, further comprising a manual operation unit that brings the abrasive into contact with a side surface of the head of the rail.   The rail polishing apparatus according to claim 7, wherein a casing that supports the abrasive and the manual operation unit is supported so as to be movable up and down with respect to the vehicle body.   The said abrasive is supported in the state in which the rotating shaft of the said abrasive was inclined in the direction in which the said grinding | polishing surface side descend | falls with respect to a horizontal direction. Rail polishing equipment.   The rail polisher according to any one of claims 1 to 9, further comprising a dust collector that collects polishing scraps generated when the rail is polished. The vehicle body runs on one rail,
The rail polishing apparatus according to any one of claims 1 to 10, further comprising an outrigger that supports the vehicle body by another rail parallel to the traveling rail.

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