JPH0813404A - Rail-straightening machine - Google Patents

Abstract

PURPOSE:To prevent a wheel from coming off at a curve and to bring the outside edge of a wheel into contact with the shoulder of the inside of a rail to make it possible to maintain a rail-straightening machine by building a leg member of a chamferer widthwise of the rail in a slidable manner, building a moving frame widthwise in a slidable and fixable manner, and pivoting a jaw loaded wheel on a bearing plate of the lower end. CONSTITUTION:A grinding unit 29 of the front chamferer is moved upward to position a moving frame 26 to the outside of a rail. The grinding unit 29 is moved downward to bring one wheel into contact with a lower part 2d of the inside shoulder, the other wheel is brought into contact with an upper part 2c of the inside shoulder to apply fixed pressure thereto. The grinding unit 29 of the rear chamferer is moved upward to move the moving frame 26 to one side. Wheels are leveled, a turning plate is inclined outward, the grinding unit 29 is moved downward, one wheel is brought into the top 2b of the rail, and the other wheel is brought into contact with the outside shoulder 2a of the rail to apply fixed pressure thereto. According to the constitution, the peripheral surface of the wheel is not collided with take-off planks 54 and 55 of the rail, and the straightening of the head of the rail can be made.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rail grinding wheel for shaping a worn rail rail head into a desired shape.

[0002]

2. Description of the Related Art An empty space is provided between a front wheel and a rear wheel of a vehicle traveling on a rail of a railway, and a transportation carriage traveling on the rail is connected to the empty space so that the transportation carriage can be lifted and lifted and mounted on the transportation carriage A rail grinding wheel that grinds the top surface of a curved rail with a grinding unit is known (for example, Japanese Patent Laid-Open No. 2-14).
7705). However, with this rail grinding wheel, the outer shoulder portion and the inner shoulder portion of the rail head cannot be ground into a desired shape.

On the other hand, as shown in FIG. 10, the carriage 10 traveling on the rail 2 is provided with a sliding block 61 movable in the width direction of the rail, and a holder 49 is attached to a fulcrum pin 43 extending from the sliding block. A chamfering device in which a grinding unit 29 mounted and mounted on a holder is swingable around a fulcrum pin is known (for example, Japanese Patent Publication No. 4-14202).
issue). In this device, a grinding unit 29 is slidably mounted on a holder 49, and a grindstone 53 of the grinding unit is moved back and forth toward the rail 2 by an elevating cylinder 38 fixed to the holder. The grindstone 53 is rotationally driven by a large electric motor 62 built in the grinding unit.

[0004]

By the way, when the rail is curved, the train passing therethrough scrapes off the inner shoulder portion of the rail head by the flange of the wheel, so this portion is sufficiently shaped during repair work. I need to do it. Conventionally, the chamfering device was added to increase the number of grinding units,
The grinding unit was greatly tilted and reciprocated several times to shape the rail head.

However, in such a chamfering device, if a railroad crossing plate is laid inside and outside the rail, a grindstone or an electric motor will hit the railroad crossing plate as shown in FIG. There was a problem that I could not do it.

The present invention provides a rail grinding wheel which can grind a head into a desired shape even with a curved rail, and can continuously perform shaping operation even with a railroad crossing plate. Is intended.

[0007]

In the rail cutting machine of the present invention, a chamfering device 7 is provided between wheels 3 and 4 in front of and behind a vehicle 1 traveling on a rail 2 of a rail so that the chamfering device 7 can float and be lifted. The chamfering device travels on the rail by means of a collared wheel 6 pivotally attached to the ends of leg members 14 provided on the front, rear, left and right of the chamfering device, and the chamfering device 7 shapes the head of the rail 2. In a rail grinding machine provided with a grinding unit 29 equipped with a grindstone 53, the leg members 14 of the chamfering device 7 are movably provided in the width direction of the rail, and form a left and right pair. It is characterized in that it is provided with a drive means 18 for synchronously driving the leg members 14 in mutually opposite directions to widen and narrow the gap between the two.

A moving frame 26 having a first fulcrum pin 33 parallel to the axial direction of the rail 2 slides in the width direction of the rail between the left and right front leg members 14 and between the right and left front leg members 14. The movable frame 26 is mounted so as to be freely and fixedly provided with a swing frame 31 that swings around the first fulcrum pin 33, and this swing frame is provided with a second fulcrum pin 43 coaxial with the first fulcrum pin 33. It is preferable to provide a rotating plate 31 that swings around the second lever pin 43 and to enable the grinding unit 29 to rotate and position on the rotating plate 31. Further, it is preferable that a support plate 15 extending in the axial direction of the rail 2 is fixed to the lower end of each leg member 14, and two flanged wheels 6 are arranged in this bracket.

[0009]

In the present invention, since the leg member 14 of the chamfering device 7 is provided slidably in the width direction of the rail, it is possible to prevent the chamfering device 7 from slipping off the wheel in a curve. Left and right leg members 14 and right and left leg members 14 of the chamfering device
In addition, since the movable frame 26 having the fulcrum pin 33 parallel to the axial direction of the rail 2 is mounted slidably and fixedly in the width direction of the rail, the fulcrum pin 43 of the swing frame is moved in and out of the rail. be able to. Therefore, the outer edge of the grindstone 53 can be brought into contact with the inner and outer shoulders of the rail. Each leg member 1
Since the two flanged wheels 6 are axially supported by the support plate 15 fixed to the lower end of the chamfer 4, the chamfering device 7 can always be maintained at a constant height even if there are rail joints.

[0010]

2 is a side view showing an embodiment of the present invention. The rail milling vehicle 1 is a front wheel 3 traveling on a rail rail 2.
A chamfering device 7 that has a space 5 between the rear wheel 4 and the rear wheel 4 and travels on the rail 2 by means of a collared wheel 6 in this space 5.
Two are stored. The chamfering device 7 is movably and hoistably connected to the vehicle body by a connecting rod 9 hung on a vehicle body 8 of a rail-cutting vehicle. Since the chamfering device 7 is movably provided on the vehicle body 8, the chamfering device 7 can move along the rail 2 even if the rail 2 is curved.

3 and 4 are a plan view and a sectional view of the chamfering device. The chamfering device 7 is provided with a carriage 10, and the carriage 10 has a plane rectangular frame body 11 and short columns 12 hanging from four corners of the frame body. Prop 1
Two guide rods 13 are mounted in parallel between the front side and the back side of 2, and the leg member 1 is mounted on the guide rods.
4 is provided slidably in the width direction of the rail 2. A support plate 1 extending in the axial direction of the rail 2 is provided at the lower end of the leg member 14.
5 is provided, and the support plate 15 is provided with the collar wheel 6
Two are arranged. The leg member 14 is the seam 1 of the rail 2.
When it comes to 6, the front and rear flanged wheels 16 are on the rails, so that the carriage 10 does not rattle.

As shown in FIG. 5, the leg member 14 is slidably provided on the two guide rods 13 of the support column 12 by a slide block 17 provided above the leg member 14, and between the slide blocks 17. The connecting cylinder 18 is interposed. A sprocket 19 is attached to the outer surface of the column 12,
Chains 21 are wound around the front side and the rear side (see FIG. 4) of the sprocket. Chain 21
The upper part is locked to the left sliding block 17, and the lower part is locked to the right sliding block 17. Therefore, the leg members 14 can be brought into contact with and separated from each other in a synchronized manner by expanding and contracting the connecting cylinder 18 in a state in which the carrying carriage 10 is lifted up. Can be prevented from being detached.

As shown in FIG. 6, a guide member 23 having a horizontal groove 22 is fixed to the inside of the upper portion of the leg member 14, and a horizontal cylinder 24 oriented in the width direction of the rail 2 is mounted in the middle of the inside. A brake cylinder 25, which is oriented in the axial direction of the rail, is attached to the inner lower portion.

A plane rectangular moving frame 26 is arranged between the left and right front and rear leg members 14, 14, and horizontal projections 27 projecting from the front and rear surfaces of the moving frame 26 are provided with the horizontal grooves 22.
Is fitted. On the front and back lower surfaces of the moving frame 26, a wide first
The bracket 28 is suspended. First bracket 28
Is connected to the rod end of the horizontal cylinder 24 at its outer intermediate position, and the horizontal cylinder 24 expands and contracts to move the moving frame 26.
Is horizontally moved in the width direction of the rail 2, and when it reaches a desired position, the brake cylinder 25 extends to fix the moving frame 26.

7 to 9 show the holding structure of the grinding unit 29 of the chamfering device 7. As shown in FIG. Moving frame 26
A rocking frame 31 having a flat rectangular shape is arranged inside the frame, and a second bracket 32 hanging from the front and rear lower surfaces of the rocking frame 31 is attached to the lower end of a first bracket 28 (see FIG. 6) of the moving frame to support the rail shaft. It is swingably supported by a first fulcrum pin 33 provided parallel to the direction. The oscillating frame has a movable frame 2 at its front and rear faces and at the base end.
6 is connected to the rod end of an oblique cylinder 34 pivotally mounted on the shaft 6, and the rocking frame 31 when the oblique cylinder 34 extends.
The inclined end of is restricted by a stopper 35 fixed to the frame 11. Two horizontal girders 36 are provided in the center of the swing frame 31, and an elevating cylinder 38 is swingably supported by a shaft 37 provided parallel to the rail on the central upper surface of the horizontal girder. . At the rod end of the elevating cylinder 38, a block body 41 having a long hole 39 horizontally long on both sides is fixed. On the front and rear inner side surfaces of the swing frame, arcuate rails 42 having an inverted L-shaped cross section are provided. A rectangular rotary plate 44 is rotatably supported by a second fulcrum pin 43 provided coaxially with the first fulcrum pin 33. Two horizontal rollers 45 are axially mounted on the outer upper portion of the rotating plate 44, and the horizontal rollers abut against the inside of the arc rail 42 to prevent the rotating plate 44 from falling. The rotating plate 44 is connected to a rod end of a rotating cylinder 46 provided on the swing frame 31 at an intermediate portion thereof,
It can be rotated about the second fulcrum pin 43 by 15 degrees. Two guide rods 47 are vertically mounted on the inner surface of the rotary plate 44, and a base end of a holder 49 having a grinding unit 29 mounted on a piece 48 attached to the guide rod 47. . A roller 51 is rotatably supported at the tip of the holder.
1 is fitted in the long hole 39 of the block body. The lifting cylinder 38 guides the holder 49 via the block body 41.
Move up and down along 7. The swinging motion of the holder that accompanies the rotary motion of the rotary plate is absorbed by the rotary motion of the lifting cylinder around the shaft 37 and the moving motion of the roller in the elongated hole 39 of the block body.

The grinding unit 29 comprises a hydraulic motor 52 and a ring-shaped grindstone 53 fixed to the tip of the motor shaft. Since the hydraulic motor 52 is used, the drive system of the grindstone 53 is light and compact, and the grinding unit as a whole can be miniaturized.

FIGS. 1A and 1B show the relationship between the grinding unit and the rail. The rail grinding wheel 1 is provided with two chamfering devices 7, and one chamfering device 7 is provided with four grinding units 29 in front, rear, left and right as shown in FIG. The four grindstones 53 come into contact with one rail 2. Since the head portion of the rail 2 in the curve is heavily worn on the inner shoulder portion, the shaping work is performed on the outer shoulder portion 2a, the top surface 2b, and the inner shoulder portion at two locations 2c.
2d. Reference numeral 54 is an external railroad crossing plate laid outside the rails, and reference numeral 55 is an internal railroad crossing plate laid between the rails, and a groove 56 through which a wheel flange passes is provided between the internal railroad crossing plate and the rails.

The operation of installing the grindstone 53 on the head of the rail will be described below. In the front chamfering device 7, the elevating cylinder 38 retracts to move the grinding unit 29 upward, and the horizontal cylinder 24 extends to position the moving frame 26 outside the rail 2. At this time, the fulcrum pins 33 and 43 are located on the outer side of the rail, and the slanting cylinder 34 is extended to incline the swing frame 31 about the first fulcrum pin 33 by 60 degrees so as to contact the stopper 35.

Next, the rotating cylinder 46 is retracted to return one rotating plate 44 by 15 degrees. The elevating cylinder 38 is extended to move the grinding units 29, 29 downward, and as shown in FIG. 1A, one grindstone 53 is brought into contact with the inner shoulder lower part 2d, and the other grindstone 53 is inner shoulder. A constant pressure is applied to the grindstone 53 by the elevating cylinder 38 by contacting the upper part 2c.

In the rear chamfering device 7, the lifting cylinder 38 is retracted to move the grinding unit 29 upward, the horizontal cylinder is retracted to move the moving frame to one side, and the fulcrum pin is moved to the inside of the rail 2. Located in. The slanting cylinder is not operated, and further the one rotating cylinder 46 is not operated, the grindstone 53 is made horizontal, the other rotating cylinder 46 is retracted, and the rotating plate 44 is inclined outward by 15 degrees. Lifting cylinder 3
8 is extended and the grinding unit 29 is moved downward, as shown in FIG.
As described above, one grindstone 53 is brought into contact with the top surface 2b of the rail, and the other grindstone 53 is brought into contact with the outer shoulder portion 2a of the rail, and the lifting cylinder 38 applies a constant pressure to the grindstone 53. Next, the hydraulic motor 52 of the grinding unit 29 is driven to rotate the grindstone 53. As is apparent from FIG. 1 (a), the outer periphery of the grinding wheel is the railroad crossing plates 54, 5 laid on the rail 2.
It is possible to continuously correct the rail head without colliding with 5.

[0021]

According to the rail grinding wheel of the present invention, the head can be ground into a desired shape even with a curved rail,
Further, even if there is a railroad crossing plate, the shaping operation can be continuously performed.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a rail shaping operation.

[Fig. 2] Side view of a rail milling car

FIG. 3 is a plan view of a chamfering device.

FIG. 4 is a sectional side view of the chamfering device.

FIG. 5 is a front view showing a mounting structure of leg members of the chamfering device.

6 is a sectional view of part A in FIG.

FIG. 7 is a side view showing the connecting structure of the movable frame and the swing frame.

FIG. 8 is a sectional view of part B in FIG.

FIG. 9 is a sectional view of a C portion of FIG.

FIG. 10 is a sectional side view of a conventional chamfering device.

FIG. 11 is an explanatory view showing the position of the grindstone during the shaping operation.

[Explanation of symbols]

 1 rail milling vehicle 2 rail 3 front wheel 4 rear wheel 6 collared wheel 11 frame body 14 leg member 15 support plate 18 connecting cylinder 26 moving frame 29 grinding unit 31 swinging frame 33 fulcrum pin 43 second fulcrum pin 53 whetstone

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[Procedure amendment]

[Submission date] April 28, 1995

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Fig. 2]

[Figure 3]

[Figure 10]

FIG.

[Figure 4]

[Figure 5]

[Figure 6]

[Figure 7]

[Figure 8]

[Figure 9]

FIG. 11

Claims (3)

[Claims] 1. A vehicle (1) traveling on a rail (2) of a railway.
A chamfering device (7) is provided between the front and rear wheels (3, 4) so that the chamfering device can move freely and can be lifted up. It is running on the rail with a collared wheel (6), and the chamfering device (7) is provided with a grinding unit (29) equipped with a grindstone (53) for shaping the head of the rail (2). In the rail cutting vehicle, the leg member (14) of the chamfering device (7) is movably provided in the width direction of the rail, and the leg member (1
4) A rail shaving vehicle which is equipped with a driving means (18) for synchronously driving each other in opposite directions to widen and narrow the gap between the two. 2. A movement having a first fulcrum pin (33) parallel to the axial direction of the rail (2) between the left and right front and rear leg members (14) and between the right and left front and rear leg members (14). The frame (26) is slidably and fixedly mounted in the width direction of the rail, and the moving frame (2
6) A swing frame (31) swinging around the first fulcrum pin (33) is provided, and a second fulcrum pin (43) coaxial with the first fulcrum pin (33) is provided on the oscillating frame. A rotating plate (31) swinging around the second fulcrum pin (43) is provided, and a grinding unit (29) is provided on the rotating plate so as to be rotatable and positionable. A rail shaving vehicle according to claim 1. 3. A support plate (15) extending in the axial direction of the rail (2) is fixedly attached to the lower end of each leg member (14), and the support plate (2) is spaced apart from the bracket in the axial direction of the rail (2). Wheels with collars
(6) is arrange | positioned, The rail cutting vehicle of Claim 1 or 2 characterized by the above-mentioned.