JP3172828B2 - Rail processing device, rail cutting device and rail clamping device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rail processing apparatus for cutting and polishing a railroad rail which has been worked or laid, and more particularly to a rail cutting apparatus suitable for performing rail welding on a railroad track and used for rail cutting. The present invention relates to a rail clamp device that performs

[0002]

2. Description of the Related Art In a railway line, in order to lay a new line or to perform maintenance and inspection of an already laid rail and replace it with a new rail, the rail to be laid or the laid rail is cut. Welding work is performed on the rail laying site. As a rail welding method,
There are a thermite welding method, an enclosed arc welding method, a gas pressure welding method, and the like, but a thermite welding method that can be performed in a short time and easily without a power source is widely used.

As a rail cutting method for securing a welding groove, gas cutting that can be cut in a short time and that can be cut even when the rail has an axial force is used. Gas cutting, as shown in FIG. 17, a rail clamp machine 103 that defines a plane perpendicular to the rail 100 with a right angle piece 101,
A torch head 202 is mounted orthogonally to the handle 201, a guide piece 203 is provided at the tip side of the torch head, and a pair of guide rollers 204 are sandwiched between the torch head 202.
Is performed using a gas fusing machine 200 mounted on the guide piece 203.

That is, a rail clamp machine 103 is fixed to a rail 100, and a cutting line is scribed around a rail surface at a position at a fixed distance from a plane of the right-angled piece 101 (a plane orthogonal to the rail head), and a guide is formed. The piece 203 is a right angle piece 10
The handle 201 is moved by freehand so that the torch head 202 moves along the cutting line while hitting the rail 1, and the rail 100 is cut (blown by a flame injected from the tip of the torch). At this time, as shown in FIG. 16, the rail is cut by the torch head 202 tracing the cutting line from three directions of the rail cross section. This is because the rail cross section has a thick head and flange base,
This is because cutting cannot be performed by cutting only from one direction.

[0005]

However, according to the above-described cutting method, since the torch head 202 is operated freehand, the strength of the heat, the angle and distance of the tip of the torch with respect to the rail surface, and the rails to be performed before fusing are performed. The skill level of individuals greatly affects the degree of preheating and how to put in flames, and considerable skill is required to obtain a good cut surface.

Further, when the rail is cut, cutting is performed from three directions. Therefore, even when performed by a skilled worker, irregularities and steps are formed on the surfaces where the cutting marks in the three directions are in contact with each other. After cutting, the cut surface is ground using a hand grinder or the like to obtain weldable accuracy.

The present invention has been made in view of the above circumstances, and has a mechanism in which a rail processing means such as a rail cutting means (torch head) has a mechanism capable of moving following a rail bus (surface) shape, thereby providing a rail surface. It is an object of the present invention to provide a rail processing device and a rail cutting device that facilitate processing of a rail.

It is another object of the present invention to provide a rail clamping device for fixing a processing means or a cutting means in a rail processing device or a rail cutting device to a rail surface.

[0009]

In order to achieve the above object, a rail machining apparatus according to the present invention comprises a rail clamping means, a rail surface following means, and a rail machining means. The rail clamp means includes a side plate having a concave portion into which the rail can be inserted, and a clamp mechanism for fixing the side plate to the rail. The rail surface following means includes a fixed plate fixed to the side plate, a rotating plate rotatably mounted on the fixed plate, and a reciprocating reciprocating member on a surface opposite to the fixed plate of the rotating plate. A guide pin is provided on the back side of the guide body, a long slot is formed in the rotating plate in the diameter direction of the rotating shaft, and the rotating shaft of the fixed plate is Guide holes are formed on the upper side and the side surrounding the guide holes, the guide pins are mounted so as to be fitted into the guide holes via the elongated holes, and the side of the guide body opposite to the rail surface operates following the rail surface. Is configured.
The rail processing means is mounted on the guide body so as to face the rail surface.

According to this rail machining apparatus, a plane perpendicular to the rail can be easily obtained by the clamp mechanism, and the guide body can be operated by following the rail surface by the rail surface follow-up means. The mounted rail processing means can be moved along the rail surface.

[0011] The rail cutting device of the present invention has gas cutting means as a rail processing means in the rail processing device, wherein a torch main body is mounted on the guide body such that a torch tip is opposed to a rail surface. I have.

According to this rail cutting device, since the torch main body is provided on the guide body that moves following the surface of the rail, the tip of the torch can be moved at a substantially constant distance from the rail surface. it can.

In the above configuration, it is preferable that the guide hole provided in the fixed board is formed by connecting three arc-shaped holes. Further, in the side plate fixed to the rail by the clamp mechanism, the rails are cut from three directions by forming fixing portions for fixing the fixing plate at both sides of the concave portion and at three positions above the concave portion. Can be. In this case, even if the rail is cut in three directions, the clamp mechanism provides a plane perpendicular to the rail, so that each cut surface can be positioned on the same surface, and a large step occurs at the connection portion of the cut surfaces. Therefore, the cut surface can be made a flat surface suitable for welding.

Further, by mounting the torch main body to the guide body via the adjusting mechanism, the distance between the tip of the torch and the side plate can be adjusted.

A rail clamp device according to the present invention is a clamp device having a pair of side plates, a rod erected between the side plates, and a rail fastener mounted on the rod to fasten a rail. It is characterized by including. A groove having a side capable of contacting the rail head and a pair of legs sandwiching the groove are formed on each of the side plates so that the rail can be inserted from below the side plate. A contact piece that contacts the lower side of the rail, a locking piece that locks the rail jaw, and a support piece that supports the rail abdomen are formed on the inside of one leg of each side plate. In at least one side plate, a convex portion is formed at a side plate position corresponding to a position above the rail head, and a hole is formed in each leg of the side plate and a side plate corresponding to a position above the rail head. A curved groove cut from each outer surface of the side plate or the side surface of the convex portion is formed at a position above the portion.

According to this rail clamp device, the side plate connected by the rod can be reliably clamped so as to be orthogonal to the laying rail, and a plane perpendicular to the laying rail can be easily obtained.

If the holes and the corresponding curved grooves are formed in both side plates, and the curved grooves formed in the respective convex portions are cut in opposite directions, the rails are formed in the respective side plates. Rail processing means such as cutting means can be mounted.

Further, if a pair of side plates are configured so that the heights of the symmetrically located holes from the lower ends of the side plates are different, it is possible to perform processing such as cutting on rails of different shapes in each side plate. .

Further, in the rail fastener of the rail clamp device, by having an adjusting rod which can move forward and backward with respect to the rail head, and an adjusting mechanism which is attached to the tip of the adjusting rod and which can tilt with respect to the adjusting rod, The lower surface of the adjustment mechanism can reliably press the rail head.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a rail cutting device according to the present invention will be described with reference to the drawings. 1 is a perspective explanatory view of a rail cutting device mounted on a rail, FIG. 2 is a front explanatory diagram of a rail cutting device with a partially cutaway section, and FIG. 3 is a perspective explanatory diagram of a rail clamping device mounted on a rail. It is.

As shown in FIGS. 1 and 2, the rail cutting device includes a rail clamp device 1 securely fixed to a rail 3 and a gas fusing machine 2 mounted at an appropriate position of the rail clamp device 1. It is configured. Where appropriate,
It is a portion located on the upper surface and both side surfaces with respect to the rail 3, and is for enabling the rail 3 to be cut from three directions.
FIG. 1 shows a case where a gas fusing machine 2 is mounted on a rail clamp device 1 corresponding to a side surface of a rail 3, and FIG.
Gas cutting machine 2 with rail clamp device 1 corresponding to the upper surface of
Are respectively shown.

As shown in FIGS. 2 and 3, the rail clamp device 1 includes a pair of side plates 1 which are arranged to face each other.
, 12, a clamp rod 13 and rods 14, 15, 16 erected between these side plates;
3 at a central position. Each rod has a cylindrical shape, and the clamp rod 13
Is built thicker than the other rods because it incorporates the fixing collar of the rail fastener 17.

As shown in FIGS. 4 and 5, each side plate 11 (12) has a side 11a (12
a), and a pair of legs 11c, 11d (12c, 12d) sandwiching the groove, so that the rail can be inserted from below the side plate. It is formed so that it can be mounted and arranged on a laying rail. One side leg 11c (12
In the inside of c), a contact piece 11 abutting on the lower side of the rail side surface is provided.
e (12e), locking pieces 11f (1) for locking the rail jaws.
2f), support piece 11g (12g) for supporting rail abdomen
Are formed to project from each other. In addition, each side plate 11 (1
On the upper surface of 2), when the rail 3 '(3 ") is mounted on the groove 11b (12b), a protrusion 11h (12h) substantially equal to the rail width is formed at a position corresponding to the rail head. 4 and 5, the rail 3 'is a 60K rail and the rail 3 "is a 50N rail.

In each leg 11c, 11d of the side plate 11, a hole (fixing portion) 11i, 1 for mounting the gas fusing machine 2 is provided.
1j are respectively perforated. These holes are in groove 1
When the rail 3 'is arranged on the base 1b, the rail 3' is formed at a position where the height h1 from the base and the distance d1 from the abdomen are the same. In addition, a hole 11k for mounting the gas fusing machine 2 in the upper central position of the side plate 11 like the holes 11c and 11d so as to correspond to the head of the rail 3 'arranged in the groove 11b. Are perforated. At the positions above the holes 11i and 11j, curved grooves 11l and 11m are formed with a constant radius r1 from the center of each hole and cut in an arc shape from each outer surface of the side plate 11. Similarly, at a position above the hole 11k, a curved groove 11n having a constant radius r1 from the center of the hole and cut in an arc shape from the side surface of the protrusion is formed.

The holes 12i, 12j, 1 are also formed in the legs 12c, 12d of the side plate 12 and in the upper center of the side plate.
2k and corresponding curved grooves 121, 12m, 12
n are formed respectively. The curved grooves 11n, 12n formed in the respective convex portions 11h, 12h are cut from opposite directions to form the curved grooves 11n, 12n formed in the respective convex portions.
Are positioned point-symmetrically with respect to the center of the rail clamp device (the position where the rail fastener 17 is mounted).

Although the side plate 11 and the side plate 12 have the same overall shape, they have different rails (60K and 50K).
N), the leg 11c of the side plate 11
Of the hole 11i at (distance t1 from the lower piece of the side plate)
And the position of the hole 12i in the leg 12c of the side plate 12 (distance t2 from the lower piece of the side plate) is set to be different (t1 <t2). The position of the hole 11k in the upper central portion of the side plate 11 (distance t3 from the side 11a)
Also, the position of the hole 12k in the upper central portion of the side plate 12 (distance t4 from the side 12a) is set to be different (t3> t4).

[0027] Clamp rod 1 of rail clamp device 1
As shown in FIG. 6, the rail fastener 17 mounted on the 3 is a U-shaped clamp piece 18 having two bent portions.
, An adjustment rod 19, an adjustment mechanism 20 attached to the lower end of the adjustment rod 19, and a handle 21 attached to the upper end of the adjustment rod 19. A through hole 22 is formed in the bent portion on the upper side of the clamp piece 18,
Clamp rod 1 is inserted through clamp rod 13
The clamp piece 18 is rotatable with respect to 3. The portion corresponding to the upper surface of the rail of the clamp piece 18 has a cylindrical portion 2
3 is formed, threads are formed on the inner peripheral surface of the cylindrical portion 23 and the outer peripheral surface of the adjustment rod 19, and the two are screwed together. The rotation of the handle 21 causes the adjustment rod 19 to move vertically with respect to the clamp piece 18. To go back and forth.
The lower end portion 24 of the U-shaped clamp piece 18 is configured to support the rail abdomen. That is,
When the rail clamp device 1 is mounted on the rail 3, the lower end portions 24 of the clamp pieces 18 are used to hold the side plates 11, 12.
Are positioned above the support pieces 11g and 12g to support the rail abdomen.

The adjusting mechanism 20 has a frusto-conical joint 25 fixed with bolts 26 so that the small diameter circular side contacts the lower surface of the adjusting rod 19, and a joint 25.
And a cylindrical adjustment portion 27 that covers the
Since the slope of the hole of the adjusting portion 27 is formed to be gentler than the slope of the hypotenuse of the joint portion 25, the adjusting portion 27 can be inclined with respect to the adjustment rod 19, and the lower surface of the adjusting portion 27 securely holds the rail head. It is configured to be pressable.

Next, the gas fusing machine 2 mounted on the rail clamp device 1 will be described. Gas cutting machine 2
As shown in FIGS. 1, 2, 7 and 8, a work guide fixing plate 31 fixed to the rail clamp device 1,
A work guide rotation plate 32 rotatably mounted on the work guide fixing plate 31; a torch guide 33 mounted on the surface of the work guide rotation plate 32;
And a torch main body 34 fixed to the main body 3. 1 and 2, the work guide fixing plate 31 is mounted on the hole 11j of the side plate 11 of the rail clamp device 1, and in FIG. 8, the work guide fixing plate 31 is mounted on the hole 11k of the side plate 11 of the rail clamp device 1. It is installed.

As shown in FIG. 9 corresponding to the mounting state of FIG. 8, the work guide fixing plate 31 has a circular portion 35, a square pilot portion 36 connected to the circular portion 35, and a pilot portion 36. Elongated lock plate 37 attached to the upper end
And a hole 38 provided at the center of the pilot portion 36.
A shaft 39 protruding to the rear side is fixed (FIG. 2), a thread is formed on the surface of the shaft 39, and a thumbscrew 40 is screwed to the tip side. A hole 41 is provided at the center of the circular portion 35, and a guide hole 42 is formed above and on the side of the hole 41. Work guide fixing plate 3
The guide hole 42 provided in 1 is formed by connecting a side arc-shaped hole 42a, an upper arc-shaped hole 42c, and a side arc-shaped hole 42b. The side arc-shaped holes 42a and 42b are formed line-symmetrically with respect to the diameter of the circular portion 35. Further, a lock piece 43 is provided on the distal end side of the lock plate 37 so as to be rotatable around the distal end from a position along the longitudinal direction of the lock plate 37 to a horizontal position on the front side.

As shown in FIG. 10, the work guide rotating plate 32 includes a circular portion 35 of the work guide fixing plate 31, a circular portion 44 having the same shape as the pilot portion 36, and a torch pilot portion 45. A long work grip 46 longer than the lock plate 37 is provided at the upper end of the torch pilot portion 45.
Is attached. A square hole 47 is formed at a position corresponding to the lock piece 43 of the work grip 46, and the work piece 46 is fixed to the lock plate 37 by inserting the above-described lock piece 43 into the square hole 47 ( Lock).

A hole 48 is formed at the center of the circular portion 44 of the work guide rotation plate 32, and a rotation shaft 49 protruding to the rear surface side is fixed (FIG. 2). When the gas fusing machine 2 is mounted on the rail clamp device 1, the rotary shaft 49 penetrates the hole 41 of the work guide fixing plate 31, and each hole 11 i formed on the side plate 11 of the rail clamp device 1. , 11j, and 11k. In the work guide rotation plate 32, an elongated hole 50 is formed at an appropriate distance from the hole 48 along the longitudinal direction of the work grip (FIG. 7).

The torch guide 33 mounted on the surface of the work guide rotation plate 32 is provided between a pair of support frames 52, 52 fixed to the surface of the rotation plate with the long hole 50 interposed therebetween. It comprises two shaft portions 53, 53, and a rectangular guide body 54 mounted reciprocally with respect to the shaft portion 53. The guide body 54 has a through hole through which each shaft portion 53 penetrates, and a bearing cylinder 54 a is mounted in the through hole, so that the guide body 54 can move smoothly between the support frames 52. Guide body 54
A guide pin 55 protruding to the rear side is fixed to the center of the rear side of FIG.

Therefore, the rotating shaft 49 of the work guide rotating plate 32 is passed through the hole 41 of the work guide fixing plate 31 so that the work guide rotating plate 32 and the work guide fixing plate 31
The work guide fixing plate 31 is fixed to the rail clamp device 1, and the guide pin 55 fixed to the back surface of the guide body 54 is attached to the work guide rotating plate 3.
If the work guide fixing plate 31 is mounted so as to fit into the guide hole 42 of the work guide fixing plate 31 through the two long holes 50, the work guide turning plate 3 around the turning shaft 49 relative to the work guide fixing plate 31.
2, the guide pin 55 moves in the guide hole 42 in accordance with the rotation, and the operation moves the guide body 54 between the support frames 52, and the lower surface side of the guide body 54 (the rail surface facing side). ) Can be configured to follow the rail surface. The work guide fixing plate 31
Hole 11 provided in side plate 11 of rail clamp device 1
i, 11j, 11k and corresponding curved grooves 111, 11
By fixing through the m and 11n, the guide body 54 is fixed.
The lower surface side (opposite side of the rail surface) moves along the periphery of the rail from three directions of the rail surface at substantially constant intervals.

The guide body 54 is provided with a torch support portion 56, and the torch main portion 34 is mounted on the torch support portion 56 to constitute rail working means. That is, a torch support portion 56 composed of a support portion 57 and a holder portion 58 is fixed to the front surface side of the guide member 54, and the holder portion 58 is arranged such that the torch tip 59 extends in the moving direction of the guide member 54.
The torch main body 34 is mounted on the main body (FIG. 11). Three hoses 60 are provided on the side of the torch body 34 opposite the tip of the torch.
a, 60b, and 60c are connected so that high-pressure oxygen, preheating oxygen, and gas are sent into the torch main body 34, respectively. Further, the fixing piece 62 of the holder part 58 is fitted between the pair of adjusting pieces 61 erected on the support part 57,
By having an adjustment mechanism that allows the fixing piece 62 to be fixed at an appropriate position between the adjustment pieces 61, the distance from the guide body 54 to the torch main body 34 can be adjusted. The distance L between the center of the torch main body 34 and the side plate 11 (12) when the torch is mounted on the main body can be adjusted (FIG. 2).

As shown in FIG. 12, high pressure oxygen from a hose 60a and a hose 60
b, and a preheating flame injection port 64 around which a flame mixed with preheating oxygen from the hose 60c and a gas from the hose 60b is injected. Are formed.

Therefore, the torch tip 59 is configured to operate while maintaining a substantially constant interval between the torch and the rail surface by the rail surface following means. The movement trajectory of the torch tip 59 is determined by the shape of the guide hole 42 formed in the work guide fixing plate 31. As shown in FIG. 13, the shape of the guide hole 42 is a side arc-shaped hole formed with a radius a2 and a groove width d around a point A that is horizontally separated by a distance a1 from the center of the rotation shaft 49. 42a
And the rotating shaft 4 located on the side opposite to the side arc-shaped hole 42a.
9, a side arc-shaped hole 42b formed with a radius a2 and a groove width d around a point C separated by a distance a1 from the center 9;
And the upper side arc-shaped hole 42c formed at a radius b2 with a radius b2 and a groove width d around the point B vertically separated by a distance b1 in the vertical direction and connected to the side arc-shaped hole 42a and the side arc-shaped hole 42b. , The rotating shaft 49 is connected to each hole 11i of the side plate 11,
11j and 11k, and the guide pin 55 is moved in the order of the trajectory X (solid line), the trajectory Y (dashed-dotted line), and the trajectory Z (dotted line) in FIG. When the work guide rotating plate 32 is rotated with respect to the work guide fixing plate 31 so as to operate with the
5 moves in the long hole 50 of the work rotation plate 32 to cause the guide body 54 to follow the rail surface (rail bus), and the torch tip 59 is moved along the trajectories X ', Y' and Z 'in FIG. Move around the rail 3 in this order, the rail surface and the torch tip 59
Can be maintained at a substantially constant interval.

Next, a method of using the rail cutting device including the rail clamp device 1 and the gas fusing machine 2 will be described. First, the rail clamp device 1 is fixed in the vicinity of the planned cutting position of the rail 3 (60K rail) (FIG. 3). That is, the rail clamp device 1 is mounted on the rail 3 so that the groove (recess) 11b of the side plate 11 is located on the rail head, and the rail fastener 17 is rotated so that the U-shaped clamp piece 18 is in contact with the rail head. The adjustment rod 19 is moved forward and backward with respect to the U-shaped clamp piece 18 by rotating the handle 21 so as to sandwich the rail abdomen, and the locking piece 11f of the side plate 11 abuts on the rail jaw to be clamped (FIG. 6). At this time, the vertical direction of the rail clamp device 1 is
The movement is regulated by an adjusting part 27 attached to the lower end of the adjustment rod 19 so as to securely press the locking piece 11f and the head of the rail 3, and for the left-right movement, a contact piece that contacts the lower side of the rail side surface. 11e, a support piece 11g for supporting the rail abdomen, and a lower tip 2 of the U-shaped clamp piece 18.
4 regulates the rail 3 by pinching it (FIG. 4). As a result, for example, for a 60K rail, FIG.
As shown in the figure, the distance A from the rail side surface to the center of the hole 11k, the distance B from the rail center to the center of the hole 11k (the distance B becomes 0 at the time of clamping, the rail center line and the hole 1
1k center line coincides), hole 11k from rail head
The rail clamp device 1 can be fixed to the rail 3 so that the distance C to the center is constant during clamping.

Next, the gas fusing machine 2 is mounted on the rail clamp device 1. The gas fusing machine 2 includes holes 11 i, 11 j, 1 formed in the side plate 11 of the rail clamp device 1.
Since it can be mounted on any one of 1k, it is sufficient to mount it in the cutting order. For example, when the rails are cut in the order shown in FIG.
The gas fusing machine 2 is mounted in the order of 11j and 11k, and the rail is cut so that the torch tip 59 of the gas fusing machine 2 moves around the rail surface.

When the gas fusing machine 2 is mounted in each hole, the turning shaft 49 of the work guide turning plate 32 is passed through the hole 41 of the work guide fixing plate 31 so that the work guide turning plate 32 The rotating shaft 49 is inserted into a hole (for example, hole 11k) of the side plate 11 by integrating the work guide fixing plate 31 with the work guide fixing plate 31. Then, the work guide rotation plate 32 and the work guide fixing plate 31 are rotated to the rail side around the rotation shaft 49, and the shaft portion 39 fixed to the pilot portion 36 of the work guide fixing plate 31 is curved. The work guide fixing plate 31 is fixed to the side plate 11 by tightening the thumb screw 40 inserted into the groove 11n) and screwed to the tip side of the shaft portion 39 (FIG. 2).

Next, the lock piece 43 of the work guide fixing plate 31 is removed from the square hole 47 of the work guide rotating plate 32,
Work guide rotating plate 3 with respect to work guide fixing plate 31
2 is in a rotatable state. Subsequently, the torch main body 34
The torch tip 59 is ignited, and the preheating flame injection port 64 is ignited.
From FIG. 12, a flame for preheating is sprayed, and the work grip 46 is manually operated to rotate around the rotation shaft 49 to apply preheating to the rail surface at the cutting position. This work is to give a preheat to a portion of the rail 3 to be cut, thereby making it easy to cut the rail.

Next, a flame for cutting the rail is injected simultaneously with the flame for preheating from the cutting flame injection port 63 of the torch tip 59. Then, the work grip 46 is again manually turned.
To rotate the work guide rotation plate 32 around the rotation shaft 49.
Is rotated from the rail end side, and the guide body 54 fixed to the guide pin 55 moves so as to follow the rail surface between the support frames 52, so that the distance between the torch tip 59 and the rail surface is made substantially constant. The rail 3 is cut while being held. The work guide fixing plate 31 is mounted in the order of the holes 11i, 11j, and 11k, and the operation of the work guide rotating plate 32 as described above causes the guide pins 55 to move the guide pins 55 through the guide holes 42 along the trajectories X,
When the torch tip 59 is moved in the order of the locus Y and the locus Z, the torch tip 59 moves in the order of the locus X ', the locus Y', and the locus Z 'with respect to the rail surface (FIGS. 14 and 15). The rail 3 can be cut by injecting a flame from a certain distance.

Further, the side plates 11 of the rail clamp device 1,
12 are holes 11i, 11j, 11k (12i, 12j, 12) so as to obtain the trajectory of the torch tip 59 suitable for cutting the rails for 60K and 50N, respectively.
k) is provided. Therefore, one rail clamp device 1 can cut two types of rails having different shapes.

When the rail 3 is cut using the rail clamp device 1 and the gas fusing machine 2 having the above-described structure, the four rods 13 and 1 are used by using the rail clamp device 1.
The side plates 11, 12 joined by 4, 15, 16 are rails 3
Can be securely clamped so as to be orthogonal to
Torch main body 34 of gas fusing machine 2 mounted on 1, 12
Can be moved at right angles to the longitudinal direction of the rail 3. Therefore, it is possible to obtain a uniform cut surface and improve the accuracy of the cut surface without requiring a skill of an operator.

Also, even if the rail 3 is cut from three directions,
Since the cut surfaces can be positioned on the same surface, a large step does not occur in the cut connection portion, and the cut surface can be a flat surface that can be welded. As a result, there is no need to grind the cut surface with a grinder as in the conventional method,
The time required for rail cutting and welding can be reduced.

The planned cutting position of the rail 3 (ruled line)
If the surface of the side plate 11 (12) is arranged at a position away from the torch by a distance L, the torch main body 34 is drawn on the scored line.
Is moved, so that the planned cutting position can be reliably cut.

Further, according to the gas fusing machine 2, since the torch tip 59 moves at a substantially constant interval from the rail surface, it is possible to maintain the fire power of the flame substantially constant with respect to the rail surface, and efficiently. Cutting can be performed, and the accuracy of the cut surface can be made uniform.

In the above-described example, the rail cutting device is used by using the gas fusing machine 2 as the rail processing device. However, if a grinder having a disk body for polishing the rail surface is attached to the guide body 54, the rail surface can be reduced. A rail polishing apparatus for polishing the surface may be used.

[0049]

According to the rail machining apparatus of the present invention, a plane perpendicular to the rail can be easily obtained, and the guide can be operated following the surface of the rail. Without this, the rail surface can be processed by the rail processing means mounted on the guide body.

According to the rail cutting device of the present invention, the torch tip moves with a substantially constant distance from the rail surface, so that the thermal power from the torch tip with respect to the rail surface is maintained substantially constant. Postcards can be cut efficiently, and the accuracy of the cut surface can be made uniform. Also,
A plane perpendicular to the rail can be easily obtained, and the accuracy of the cutting position can be improved. Further, even if the rail is cut from three directions, each cut surface can be positioned on the same surface, so that there is no step at the connecting portion of the cut surfaces, and the cut surface can be a flat surface.

According to the rail clamping device of the present invention, each side plate connected by the rod can be reliably clamped so as to be orthogonal to the rail, and a plane perpendicular to the rail can be easily obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating a rail cutting device according to an example of an embodiment of the present invention, which is mounted on a laying rail.

FIG. 2 is an explanatory front view of the rail cutting device, a part of which is shown in a cutaway cross section.

FIG. 3 is an explanatory perspective view of a rail clamp device mounted on a rail.

FIG. 4 is an explanatory side view of a rail clamp device mounted on a 60K rail.

FIG. 5 is an explanatory side view of a rail clamp device mounted on a 50N rail.

FIG. 6 is an explanatory side view of a rail fastener attached to the rail clamp device.

FIG. 7: Work guide fixing plate, work guide rotating plate,
It is a structural explanatory view showing a connected state of a guide body.

FIG. 8 is an explanatory side view of the gas fusing machine.

FIG. 9 is an explanatory side view of the work guide fixing plate.

FIG. 10 is an explanatory side view of a work guide rotation plate.

FIGS. 11A and 11B are structural explanatory views showing a mounting state of the torch main body with respect to the guide body, wherein FIG. 11A is a top explanatory view of the guide body and the torch main body part, and FIG. .

FIG. 12 is a structural explanatory view showing the structure of a torch tip.

FIG. 13 is a structural explanatory view for explaining a shape of a guide hole of a work guide fixing plate.

FIG. 14 is an explanatory view of a movement trajectory for explaining the movement of the guide pin in the guide hole.

FIG. 15 is an explanatory view of a movement locus for explaining the movement of the torch tip with respect to the rail surface.

FIG. 16 is an explanatory sectional view of a rail for explaining a procedure of cutting the rail;

FIG. 17 is an explanatory perspective view showing a case where a rail is cut using a conventional rail clamp machine and a gas fusing machine.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Rail clamp device, 2 ... Gas fusing machine, 3 ... Rail, 11, 12 ... Side plate, 11b ... Groove (recess),
11e: contact piece, 11f: locking piece, 11g: support piece, 11i, 11j, 11k: hole, 11l, 11
m, 11n: curved groove, 12i, 12j, 12k: hole, 12l, 12m, 12n: curved groove, 13: clamp rod, 14, 15, 16: rod, 17: rail fastener, 18: clamp piece, 19 … Adjustment rod,
20 adjustment mechanism, 21 handle, 25 ...
Joint part, 27 ... Adjust part, 31 ... Work guide fixing plate, 32 ... Work guide rotating plate, 33 ...
Torch guide, 34 ... Torch body, 39 ... Shaft,
40: Thumb screw, 41: Hole, 42: Guide hole, 42
a, 42b: side arc-shaped holes, 42c: upper arc-shaped holes,
46: Work grip, 48: Hole, 49: Rotating shaft, 50: Slot, 52: Support frame, 54: Guide body, 55: Guide pin, 56: Torch support, 5
9 ... Torch tip, 63 ... Cutting flame injection port, 64 ...
Preheating flame injection port

Claims (9)

(57) [Claims] 1. A side plate having a concave portion into which a rail can be inserted, a rail clamping means having a clamp mechanism capable of fixing the side plate to the rail, and a fixed plate fixed to the side plate. A rotating plate pivotally mounted on the fixed plate, and a guide body reciprocally mounted on a surface of the rotating plate opposite to the fixed plate, and a back surface of the guide body. A guide pin is provided on the rotary plate, a long and narrow hole is formed in a diameter direction of the rotary shaft in the rotary plate, and a guide hole is formed above and on the side of the fixed plate surrounding the rotary shaft. A rail surface follower that is mounted so as to fit into the guide hole through the elongated hole and that operates so that the side facing the rail surface of the guide body follows the rail surface, and the guide body is provided so as to face the rail surface. Mounted rail processing means. . 2. A rail clamping means comprising a side plate having a concave portion into which a rail can be inserted, and a clamp mechanism for fixing the side plate to the rail, and a fixed plate fixed to the side plate. A rotating plate pivotally mounted on the fixed plate, and a guide body reciprocally mounted on a surface of the rotating plate opposite to the fixed plate, and a back surface of the guide body. A guide pin is provided on the rotary plate, a long and narrow hole is formed in a diameter direction of the rotary shaft in the rotary plate, and a guide hole is formed above and on the side of the fixed plate surrounding the rotary shaft. A rail surface follower that is mounted so as to fit into the guide hole via the elongated hole, and the rail surface facing side of the guide body operates by following the rail surface, and a torch tip portion faces the rail surface. Gas blowing means comprising a torch body mounted on the guide body , Rail cutting apparatus comprising. 3. The rail cutting device according to claim 2, wherein the guide hole provided in the fixed board is formed by connecting three arc-shaped holes. 4. The rail cutting device according to claim 2, wherein fixing portions for fixing the fixing plate are formed on both sides of the side plate sandwiching the concave portion and at three positions above the concave portion. 5. The rail cutting device according to claim 2, wherein the torch main body is mounted on the guide body via an adjusting mechanism capable of adjusting the distance between the tip of the torch and the side plate. 6. A clamp device having a pair of side plates, a rod spanned between the side plates, and a rail fastener mounted on the rod and fastening a rail, the side being capable of contacting a rail head. A groove having a groove and a pair of legs sandwiching the groove are formed in each of the side plates so that a rail can be inserted from below the side plate, while inside the leg on one side of each side plate, on the lower side of the rail side surface. A contacting piece that abuts, a locking piece that locks the rail jaw, and a support piece that supports the rail abdomen are formed in a projecting manner, and at least one side plate has a protrusion at a side plate position corresponding to above the rail head. Forming a hole in the side plate corresponding to each leg of the side plate and the position above the rail head, and cutting from the outer surface or the side surface of the convex portion of the side plate at the position above the hole. To form curved grooves Rail clamping device according to claim. 7. The rail clamp device according to claim 6, wherein the hole and the corresponding curved groove are formed in both side plates, and the curved grooves formed in each convex portion are cut in opposite directions. . 8. The rail clamp device according to claim 7, wherein the heights of the symmetrically located holes of the pair of side plates from the lower end of the side plates are different. 9. The rail clamp device according to claim 6, wherein the rail fastener has an adjustment rod that can move forward and backward with respect to the rail head, and an adjusting mechanism that can be tilted with respect to the adjustment rod is provided at the tip thereof. .