KR0140067B1 - Machine for cutting railway rail - Google Patents

Abstract

Clamp by catching the catch frame 3 to the cutting position indicating gauge 9 fixed to the railroad rail 5, and the body block 1 through the slide shafts 2 and 2 with respect to the catch frame 3; ) And the rotary grindstone 30 driven by the engine 18 installed in the main body block 1 by the operation of the stroke handle 11 to smoothly rotate the rotary grindstone 30 along the cutting hole. A railroad rail cutter which cuts the railroad rail 5 in the width direction ascends and descends, and changes the cutting opening of the grindstone 30 to reduce the frictional resistance of the cutting, thereby suppressing the generation of frictional heat and miniaturizing the engine. Can improve the cutting tool precision.

Description

[Name of invention]

Railway rail cutting machine

[Brief Description of Drawings]

1 is a perspective view of the entire railway rail cutting machine according to the present invention.

2 is an exploded perspective view of a cutter according to the present invention.

3 is a side view of the railway rail clamp unit according to the present invention.

4 is a perspective view showing a state in which a cutting position indicating gauge according to the present invention is attached to an upper surface of a railway rail.

5 is a perspective view for explaining a clamp state of the cutter according to the present invention.

Figure 6 is a schematic side view showing the body block attachment position of the cutter according to the present invention.

7 (a) to 7 (c) are diagrams for explaining the variation of the grindstone cutting tool of the cutter according to the present invention.

8 to 14 are perspective views for explaining the operation of the cutter according to the present invention.

Detailed description of the invention

[Technical Field]

The present invention relates to a railroad rail cutter for use in cutting railroad rails to a predetermined length in laying and connecting railroad rails.

Background Technology

In the case of new laying of railway rails or replacement of old railroad rails, a cutting machine is used to cut rails to a predetermined length by rotating a rotary grindstone of a circular plate in order to cut the rails to a predetermined length.

However, since the conventional cutting machine is configured to push the main body in a fixed direction while rotating the grinding wheel while clamping the main body to the railway rail, there is no change in the contact position of the grinding wheel with respect to the railway rail, so that the rail head Cut across the full width.

In such a cutting method, the grinding wheel always rotates in contact with the same cutting tool, so that it generates a high temperature frictional heat, which not only thermally burns the rail, but also requires a large engine to drive the grinding wheel. Because the vibration is easy to be transmitted and a strong cutting pressure is required, the cutting tool is widened or bent, which hinders high precision cutting.

SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional shortcoming, and it is possible to make high-precision cutting with a thin cutting tool that does not affect the rail, and to reduce the power and make the handling easier and to facilitate the positioning of the cutting machine. It is an object of the present invention to provide a railroad rail cutting machine that performs and improves workability.

[Initiation of invention]

The present invention is a railroad rail cutting machine, the clamp arm (4) with respect to the catch frame (3) is freely axially supported on the catch frame (3) to clamp the railroad rail (5) of a predetermined cross-section in the width direction, the clamp arm (4) The lower end part 8c of the clamp screw 8 with the rotating handle 8a which penetrates the screw cylinder 4b installed at the upper end of the head vertically downwards is attached to the upper surface of the railway rail 5 in advance. The clamp position is determined by tightening the upper plate dish hole 9a of the cutting position indicating gauge 9, and the railroad rail 5 is pushed down at right angles in the vertical direction and held down at a right angle in the horizontal direction. The rail clamp means is constituted by the rail support portions 6a to 6c provided on the catch frame B side and the lower hook portion 4a provided on the clamp arm 4 side. Two to slide sideways (1) freely Both ends of the slide shafts 2 and 2 of the slide shafts 2 and 2 so that the slide shafts 2 and 2 extend perpendicularly and horizontally to the longitudinal direction of the railway rail 5, and are rotatably supported with respect to the catch frame 3. While supporting the middle portion of the stroke handle 11 extending upwards with respect to the main body 1 through the connecting rod 12 to enable rotational movement, the upper side of the main body 1 extends to the side of the catch frame 3 Come out and swing the vertical direction with respect to the slide direction of the slide shaft (2, 2), and is provided with a cutting arm (17) which always has a constant cutting pressure by the spring repulsion force, the cutting arm (17) An arm handle 26 is placed, and a cutting hole is formed in the width direction of the railway rail 5 in accordance with the cutting instruction position 10 of the gauge 9 at the front end side of the cutting arm 17, and rotated by power. Grinding wheel (30) to the removable material The angle between the top surface of the railway rail 5 and the radius from the rotary shaft B of the rotary grindstone 30 to the contact point C at which the rotary grindstone 30 contacts the edge of the railway rail 5. The cutting position with respect to the same cutting opening of the railway rail 5 by the grinding wheel 30 is always fluctuate | varied according to the back and forth movement operation of the stroke handle 11 so that it may become about 45 degrees.

In addition, the clamp means provided on the catch frame 3 is provided with the rail supporters 6a and 6b for holding the rail head 5c up and down against the lower end 8c of the clamp screw 8, and the clamp arm. The rail abdominal supports 6a and 6a supporting the side of the rail head 5c and the parallel installation of the rail abdominal supports 6a and 6a which hold the rail abdomen 5a against the downward hook portion 4a of (4). ) And the rail head support 6c provided on the same side.

Best Mode for Carrying Out the Invention

In FIG. 1 and FIG. 2, (1) is a main body block, and two slide shafts (2, 2) are provided in this main body block (1) by sliding space | interval freely at intervals in a horizontal direction. These slide shafts 2 and 2 penetrate back and forth through the main body block 1, and have threaded portions 2a, 2a, respectively, at both ends.

As shown in FIG. 3, the catch frame 3 has a substantially c-shaped longitudinal section consisting of the front and back wall surfaces 3a and 3b and the ceiling surface 3c. In Fig. 1 and Fig. 3, the side and the through holes 3d and 3d of the wall surface 3a of the left side) are drilled and installed in the front and rear directions, and the slide shafts 2 and 2 are provided in each of these through holes 3d and 3d. ), And fix each of the screw portions 2a, 2a on the front (right side in FIGS. 1 and 3) with a nut.

However, the through holes 3d and 3d are such that when the slide shafts 2 and 2 are attached, the slide shafts 2 and 2 extend perpendicularly to the front wall surface 3b of the catch frame 3. .

The front wall surface 3b of the catch frame 3 constitutes various rail supporting means with respect to one side along the longitudinal direction of the predetermined cross-sectional railroad rail 5 accommodated between the wall surfaces 3a and 3b. That is, as shown in FIG. 5 by the arrow of the position and the direction of the rail support means, the rail abdominal part 5a is supported by two horizontal directions, and the rail jaw part 5b is supported by two horizontal directions, The side of the rail head 5c is supported by one central point, and as shown in FIG. 3, these support points are provided so that the front wall surface 3b becomes a uniform support which is vertically different with respect to the railway rail 5. The rail support means which consists of two rail abdominal support 6a, 6a, and two rail support 6b, 6b, and one rail head support 6c is comprised.

In addition, the U-shaped clamp arm 4 having a hook portion 4a at the lower side and a screw barrel 4b at the upper side is received with respect to the cavity portion 3d formed in the central longitudinal direction of the catch frame 3. Then, the curved portion is freely supported by the shaft 7 over the flanges 3e and 3e of the catch frame 3, and the screw portion 4b is a screw portion of the clamp screw 8 vertically downward. The lower end part 8c is projected downward by screwing 8b by screwing operation of the upper rotation handle 8a.

The lower end portion 8c of the clamp screw 8 is fitted into a plate-shaped hole a formed by drilling at a predetermined position on the upper surface of the gauge 9 used to indicate the cutting position when cutting the railway rail 5. That is, the railroad rail 5 is cut in the width direction of the railroad rail 5, but the gauge 9 is provided on the upper surface of the railroad rail 5 in advance, and is fastened by clamping the clamp screw 8. When the lower end portion 8c is fixed to the plate-shaped hole 9a of the gauge 9, it is possible to automatically fix the installation position of the cutter with respect to the railway rail 5.

However, as shown in FIG. 3, the lower end part 8c of the clamp screw 8 is set so that the perpendicular | vertical line may be located substantially in the center of the rail abdominal support 6a and the rail support 6b. The tightening of 8) can be performed stably.

As shown in FIG. 4, the gauge 9 fixes the fitting piece 9b which can fit the railroad rail 5 of a predetermined width upward on one side of a plate which can be mounted on the upper surface of the railroad rail 5, as shown in FIG. The press holding member 9c, which can be fitted to the railroad rail 5 like the fitting piece 9a on the other side, is secured, and the side portion on the side of the pressing holding member 9c has a screwed fitting piece 9d. The side of the rail head 5c can be tightened with the cross section), and the edge portion on the side of the fitting piece 9b is set as the cutting instruction position 10.

The scheduled cutting line corresponding to this cutting instruction position 10 is formed at right angles to the longitudinal direction of the railway rail 5. The dish-shaped hole 9a drilled in the upper surface of the gauge 9 is provided in the position corresponding to the lower end part 8c of the said clamp screw 8.

Thus, as shown in FIG. 5, the rails are supported by rail jaws 6b and 6n (two point support) facing the lower end 8c (one point support) of the clamp screw 8 by tightening the clamp screw 8. While holding the head 5c up and down, the rail abdomen 5a is supported by the rail abdominal supports 6a, 6a (two points of support) of the catch frame 3, and the rail head restraint 6c on the same side; One point of support) to support the side of the rail head 5c, and the rail abdomen 5a to the hook portion 4a of the clamp arm 4 against the three-point support to the same side of these railroad rails 5; By one point of support).

As a result, only by tightening by one catch frame 3 to the plate-shaped hole 9a of the gauge 9, it can clamp at right angles to the railroad rail 5 at right angles, and to the horizontal direction. ) Can slide in the perpendicular or horizontal direction with respect to the longitudinal direction of the railway rail (5).

In addition, in the right side of FIG. 5, the said clamp state is divided into the up-down direction and the horizontal direction of the railroad rail 5, and each right angle support is illustrated.

A stroke handle 11 extending upward is freely supported by the shaft 11a on the side portion near the attachment position of the slide shafts 2 and 2 of the catch frame 3, and the stroke handle 11 Rotational movements of the intermediate portion and the protrusions 16a of the support shaft 16 protruding from the upper anti-retention members 1a and 1a of the main body 1 are freely connected to each other by the connecting rods 12.

In this configuration, when the catch frame 3 is fixed to the railway rails 5 and the stroke lances 11 are moved back and forth, the main body 1 can be moved back and forth horizontally with respect to the railway rails 5. 11b is rubber mounted on the stroke handle 11, and the stroke handle 11 is fixed by hooking the handle hook 1d through the stopper 11c provided on the side protrusion of the catch frame 3 at the forward inclined value. I can do it in a state.

In addition, the support body 14 provided with the wheels 13 and 13 at both ends is fixed to the threaded parts 2a and 2a on the opposite side to the catch frames 3 of the slide shafts 2 and 2. The stopper 14a is fixed to the main body 1 side of the support body 14, and the collision with the support body 14 at the time of back and forth movement of the main body 1 can be alleviated. In addition, the transport handles 15 and 15 are fixed to both ends of the main body 1. 15a is a rubber to be mounted on the transport handle 15.

17 is a cutting arm rotatably supported by the support shaft 16 with respect to the support bodies 1a and 1a of the upper part of the main body 1, in the state which clamped the railway rail 5 by the catch frame 3 as mentioned above. The rocking motion of the cutting arm 17 is attached so as to be perpendicular to the longitudinal direction of the railway rail 5.

The cutting arm 17 has a shape in which the free end extends to the side of the catch frame 3, and a supporting plate 19 is provided on the supporting side of the cutting arm 17, that is, above the main body 1, and this supporting plate is provided. On (19), the output drive 18a is bolted to the cutting arm 17 side via the mounting plate 20 for the engine 18 for rotational driving. The engine 18 may be constituted by an electric motor in addition to the combustion type. The engine shown in each figure is a combustion type, and is equipped with necessary apparatuses, such as the fuel tank 42 and the starter lever 41. As shown in FIG.

The attachment means of the engine 18 makes the bolt hole 19a of the support plate 19 a long hole in the front-rear direction, and at the same time, the adjustment bolt 20a is screwed in front of the mounting plate 20, and this tip is screwed. The front and rear mounting positions of the engine 18 can be adjusted by fitting.

In addition, the cylinders 23a and 23a are provided on both sides of the attachment plate 23 with respect to the support shafts 22 and 22 protruding rearward from both side portions of the support plate 19. Each end receives the ends of the coil springs 24 and 24, inserts the respective coil springs 24 and 24 into the support shafts 22 and 22, and then cuts the ends of the support shafts 22 and 22 into the washer ( Holding and fixing to 24a and 24a to prevent the coil springs 24 and 24 from escaping, the lower side of the attachment plate 23 is screwed to the rear side of the support 1a, 1a of the main body 1. .

In addition, the stopper 23b is fixed to the side of the sub-plate 23 upward through the bracket, and the stopper 23b touches the bottom of the support plate 19 to be cut at the time of rotation behind the cutting arm 17. The amount of rotation below the arm 17 is regulated.

A bifurcated plate 17a, 17a is attached to the free end of the cutting arm 17, and an arm handle 26 extending upward is fixed to the inner bifurcated plate 17a. 26a is a rubber mounted to the arm handle 26, and this arm handle 26 is hooked to the handle hook 26d through a stopper 26c attached to the side protrusion of the catch frame 3 at the forward tilting position. Can be fixed

The cutting arm 17 is provided with mounting holes 27 and 27 for rotatably attaching the flange-mounted rotating shaft 28 through the two-plates 17a and 17a. The shaft part with a flange attached to the attachment holes 27 and 27 in the state which lifted the flange part outward, and the shaft part which protruded in the one side of the rotation shaft 28 between the two boards 17a and 17a. The pulley 31 is rotated and fixed with respect to the 28a, and the bearings 29 and 29 fitted to both sides of the pulley 31 are attached to the mounting holes 27 and 27 of the two plates 17a and 17a. In contact, the shaft end of this shaft portion 28a is tightened with a nut. The other shaft portion 28b is fitted to the flange portion of the rotating shaft 28 with a flange so that the flange 33 is inserted from the outside so that the rotary grindstone 30 of the circular flat plate can be freely attached and fastened with a nut 34. .

Then, the belt 35 is placed on the pulley 31 disposed between the two plates 17a and 17a and the pulley 32 fixed to the output shaft 18a of the engine 18. In such a configuration, the rotary grindstone 30 is configured such that the rocking motion of the cutting arm 17 is perpendicular to the longitudinal direction of the railway rail 5 so that the cutting hole of the rotary grindstone 30 is the railway rail 5. ) Perpendicular to the longitudinal direction. The cutting arm 17 is provided with a cover 36a covering the belt 35 and a cover 36 covering the rotary grindstone 30.

As shown in the lower right side of FIG. 2, the arm arm lever 37 is rotatably supported on the upper part of the main body 1 as the cutting arm 17 needs to make the rocking motion locked as necessary. The arm lock lever 37 is tightened to the main body 1 through the spring 39, and the concave piece 37a fixed to the middle portion of the arm lock lever 37 is attached to the cutting arm 17. As shown in FIG. Automatic locking is applied to the shaft piece 38 protruding in the vicinity of the support portion, and the release arm 17 is shifted upward by slightly lifting the arm handle 26 to release the lock state. ) Forward to release the engagement of the concave piece 37a against the shaft piece 38.

In the above configuration, as shown in FIG. 6, the rotary grindstone (B) is rotated on the rotary shaft B of the rotary grindstone 30 by the cutting arm 17 swinging about the rotary shaft A (support shaft 16). The cutting arm 17 is supported by the support arm 16 when the angle between the radius of the contact point C contacting the edge of the railway rail 5 and the upper surface of the railway rail 5 is approximately 45 °. When swinging around, due to the weight of the cutting arm 17 and the spring force of the coil springs 24 and 24, the rotation moment of the cutting arm 17 is applied to the cutting hole of the railway rail 5 by the rotary grindstone 30. It swings while giving the average cutting pressure with respect to it, and the grinding wheel 30 moves up and down smoothly according to the cutting opening of the railway rail 5 by back and forth movement of the main body 1. In the above configuration, when the attachment position of the rotary shaft A of the cutting arm 17 is configured as low as possible from the rail head 5c, the position of the rotary shaft A is relative to the entire length of the railway rail 5. Approaching the center in the horizontal direction, the separation distance to the railway rail 5 from the rotation axis (A) is equal, there is an advantage that the operation of the stroke handle 11 can be the same stroke operation, the operation is simplified.

In this case, however, it is preferable that the minimum position of the catch arm 3 is taken to be able to directly cut the laying rail by taking a certain distance X from the ground.

Here, the operation of the railway rail cutting machine having the above configuration will be described with reference to FIGS. 8 to 14 as well as the operation method thereof.

In FIG. 8, in order to carry the cutting machine of the present invention, a stroke handle 11 and an arm handle 26 are locked to each of the handle hooks 11d and 26d, and a single person handles the stroke handle 11 and the arm. The handle 26 is lifted up, and the other person lifts both carrying handles 15 and 15.

Next, in FIG. 9, the handle hook 26d of the arm handle 26 is removed to lift the arm handle 26, and the concave piece 37a of the arm lock lever 37 is removed from the cutting arm 17. As shown in FIG. It hangs on the shaft piece 38, and it locks in the fixed state, lifting up the cutting arm 17. Then, the grindstone 30 is inserted into the shaft portion 28a of the rotating shaft 28 with flange, and fastened with the nut 34 using the spanner 40 through the flange 33 as shown in FIG. do.

Next, as shown in FIG. 10, the gauge 9 is attached to the railway rail 5 to be cut. At this time, the cutting instruction position 10 of the gauge 9 is adjusted to the cutting scheduleability of the railway rail 5. Then, the cutter body is lifted up, the clamp screw 8 lower end portion 8c is placed on the railroad rail 5 in accordance with the plate-shaped hole 9a of the gauge 9, and the clamp screw 8 is tightened at the same time.

At this time, when the person holding the carrying handles 15 and 15 shakes the cutter body a little, the two rail abdominal supports 6a and 6a on the catch frame 3 side are provided with the two rail supporters 6b and 6b. The support points of the two rail head support 6c and the hook portion 4a of the clamp arm 4 can be clamped at right angles while being evenly applied to a predetermined portion of the railway rail 5.

Next, as shown in FIG. 12, when the handle hook 11d of the stroke handle 11 is removed and the arm handle 26 is lifted up, the grinding wheel 30 falls from the railway rail 5. The engine 18 is started in this state and left in an idling state.

Subsequently, the engine wheel is gradually raised to set the grinding wheel 30 to a stable rotation without oscillation. Then, as shown in FIG. 12, the arm handle 26 is slightly lifted (in the direction of the black arrow in FIG. 12). Pull the lock lever 37 forward to make the cutting arm 17 free, and gently lower the arm handle 26 (in the direction of the white arrow in FIG. 13) to turn the grinding wheel 30 to the rail head of the railway rail 5 ( With respect to 5c), the output of engine 18 is maximized in the state in which some cutting opening was formed in the rail head 5c.

Then, the arm handle 26 is pressed so that the rotary grindstone 30 does not shake up and down, and the stroke handle 11 is moved back and forth in a cycle of about 30 cm for 1 to 2 seconds to cut the railway rail 5.

In this cutting operation, as shown in Fig. 7 (b), when the stroke handle 11 is pulled forward (in front of the operator) by the rotary grindstone 30 rotating in the direction of the arrow, the rotary grindstone 30 is arrow b1. As it moves in the direction, the cutting position of the grindstone 30 is smoothly raised (c1), and in the upper corner portion d1, the cutting is progressed with a cutting tool of a slight length, and then the stroke handle 11 is rearward ( As the rotary grindstone 30 moves in the direction of arrow b2 by pushing in front of the operator, the rotary grindstone 30 smoothly descends (c2), and cuts the lower edge portion d2 while cutting the central ridge.

In this way, the stroke handle 11 is moved back and forth so that the cutting holes d1 to d2 of the grinding wheel 30 are always changed so that the frictional heat generating part is varied, and the grinding wheel 30 is a cutting tool d1 of a slight length. The cutting force may be small because the cutting process can be carried out only by contacting ˜d2). As shown in Fig. 7 (a), when the rotary grindstone 30 rotating in the arrow a direction does not change the cutting tool as shown in Fig. 7 (a), the frictional heat is always generated at the same position. The length reaching the cutting opening of the grindstone 30 is lengthened over the entire width of the railway rail 5, so that the rotational force of the grindstone is unnecessary.

FIG. 14 shows the rear side of the cutting machine attached to the railway rail 5, but as described above, the cutting machine is cut because it is clamped in the raised state as indicated by the arrow H at the bottom of the railway rail 5. It is possible to proceed with the cutting operation without disassembling while laying the rail railway rail (5). However, it is preferable to remove the gravel 41 below the cutting position of the grinding wheel by about 10 cm.

Industrial availability

According to the above description, when cutting the rail to a predetermined length, the present invention can easily position and clamp the cutter with respect to the cutting position of the rail, and is suitable for carrying out with the railway rail to be cut. Convenient for replacement work.

In this cutting operation, the grinding wheel moves up and down smoothly along the cutting hole just by moving the stroke handle back and forth so that the cutting position of the rotation is always changed. Since the cutting proceeds only by contacting the cutting tool of the length, it is possible to cut with slight rotational force without giving heat to the rail, and the vibration of the grindstone is hardly generated as a result that the power can be reduced in size and weight. The sphere is thin and high precision cutting is performed.

In addition, the weight reduction can simplify and facilitate workability such as transportation, handling and setting.

Claims (2)

Screw cylinder (4) rotatably supported on the catch frame (3) so as to clamp the railroad rail (5) of a predetermined cross section in the width direction freely, and installed on the upper end of the clamp arm (4) 45 of the cutting position indicating gauge 9 in which the lower end portion 8c of the clamp screw 8 with the rotary handle 8a, which is vertically screwed through, is detachably attached to the upper surface of the railway rail 5 in advance. By clamping on the upper plate-shaped hole 9a, the clamp position is determined, and the railroad rail 5 is pushed and held at right angles in the vertical direction, and the catch frame 3 is held at a right angle in the horizontal direction. The rail clamp means is constituted by the rail support parts 6a to 6c provided and the lower hook part 4a provided on the clamp arm 4 side, and the rail clamp means is slid to the main body 1 with respect to the catch frame 3. 2 slide shafts (2, Both ends of 2) are fixed so that the slide shafts 2 and 2 extend perpendicularly and horizontally to the longitudinal direction of the railway rail 5, and are rotatably supported with respect to the catch frame 3 and extend upward. The middle part of the stroke handle 11 is rotatably supported with respect to the main body 1 through the connecting rod 12, while the upper part of the main body 1 extends to the side of the catch frame 3 and slides. A cutting arm 17 which swings in the vertical direction with respect to the slide direction of the shafts 2 and 2 and which has a constant cutting pressure by the repulsive force of the spring is provided, and the cutting arm 17 has an arm handle for pressurization. (26) is provided, and a cutting hole is formed at the front end side of the cutting arm (17) in the width direction of the railway rail (5) according to the cutting instruction position (10) of the gauge (9) and rotated by power. Rotating Attaching and detaching the stone 30 freely, the radius from the rotating shaft (B) of the rotary grindstone (30) to the contact point (C) in contact with the corner portion of the railway rail 5, and the The angle formed by the upper surface of the railroad rail 5 is about 45 °, and according to the same cutting hole of the railroad rail 5 by the rotary grindstone 30 according to the forward and backward movement of the stroke handle 11. A railway rail cutter, characterized in that the cutting position is always varied. 2. The clamp according to claim 1, wherein the clamp means provided on the catch frame (3) is provided with a rail support (6b) for holding the rail head (5c) up and down against the lower end (8c) of the clamp screw (8). 6b) and the rail abdominal supports 6a and 6a for holding the rail abdomen 5a forcibly facing the lower hook portion 4a of the clamp arm 4, and the side of the rail head 5c. A railroad rail cutter comprising a rail head support (6c) provided on the same side as the rail abdominal support (6a, 6a) to support.