JP6086812B2 - Rail clamp device, rail fixing method using the rail clamp device, and rail correcting device - Google Patents

Description

  The present invention relates to a rail clamp device for fixing a rail correction device to a rail, which is provided before and after a rail correction device that corrects the welding remainder of the rail, the top surface and the side surface of the head, and the rail clamp device. TECHNICAL FIELD The present invention relates to a rail fixing method and a rail correcting device.

  When a welding remainder (welding surplus) remains in the joint portion of the rail, or when the rail top surface is uneven, the welding residual portion or rail top surface is corrected by a rail correcting device. In such a rail grinding device, after being fixed to the rail by a rail clamp device provided before and after the device, the grinding wheel of the rail grinding device is moved in parallel along the longitudinal direction of the rail, It is moved in a vertical plane with respect to the longitudinal direction to correct the rail welding remainder and rail top surface (see, for example, Patent Documents 1 to 3).

JP 2001-049604 A JP 2002-188101 A JP 2005-029975 A

  However, in each of the rail clamp devices of the rail correction devices of Patent Documents 1 to 3, the rail clamp device itself is configured such that the rail top surface and the jaw (neck) side surface are sandwiched and fixed to the rail. Although there is a merit that can be downsized, there is a problem that the rail clamp device is easy to tilt with respect to the rail and the stability is poor because the fulcrum that fixes (clamps) the rail is arranged in the vicinity of each other. .

  For this reason, if the rail clamp device is fixed in a tilted state relative to the rail, or if the rail clamp device is tilted and tilted during the cutting operation, the grinding wheel of the rail correcting device also tilts, so that the cutting front also faces the rail. However, there is a problem in that there is a possibility of being inclined rather than parallel.

  In addition, the rail top surface (tread surface) is not completely horizontal, and both ends are curved, or it may be worn and slanted by aging, so that it may be tilted. There is also a problem that it is difficult to mount the positive device at a predetermined angle with respect to the rail.

  Therefore, the present invention has been made in view of such problems. First, it can be fixed to the rail in a stable state, and secondly, the guide portion can be further fixed while being fixed to the rail. It is an object of the present invention to provide a rail clamp device capable of easily aligning a normal location, a rail fixing method using the rail clamp device, and a rail correction device.

In order to solve the above-mentioned problems, the rail correction device of the present invention is provided at the front and rear of the rail longitudinal direction of the rail correction device that corrects the welding remainder of the rail, the top surface, and the side surface of the head. A rail clamp device for fixing a rail sharpening device, a block support portion for supporting a pair of side blocks in a state of being spaced apart from the width of the rail head, and the pair of side blocks A first clamp mechanism portion that is attached and fixed to sandwich the rail, and the first clamp mechanism portion is rotatably supported on the front surface with respect to the rail longitudinal direction of each side block, and The lower end extends to the bottom of the rail, and a locking portion for locking the both ends of the rail bottom is provided on the inner side of the lower end. A pair of first clamp arms having a sleeve portion rotatably attached thereto, and screw portions threadedly engaged with the screw portions of the sleeve portions of the pair of first clamp arms are provided at both ends, and at the center. A first clamp shaft provided with a cam; and a first clamp shaft that is fixed to the cam and rotates the first clamp shaft and the cam by moving from a standing state to a lying state or vice versa. The clamp lever constituting the mechanism is moved from the standing state to the lying down state or vice versa, thereby rotating the first clamp shaft and the cam so that the outer peripheral surface of the cam contacts the rail top surface, and a pair of first 1 Lock each of the lower end of the clamp arm to the both ends of the rail bottom, and fix at the three points of the rail top and both ends of the rail bottom. The features.
Here, in the above-described rail clamp device, the cam provided at the center of the first clamp shaft does not come into contact with the rail top surface when the clamp lever is in the upright state, and the clamp lever falls from the upright state. When moved to the state, it is more preferable that the first clamp shaft is passed through an eccentric position so that the cam rotates and its outer peripheral surface comes close to and comes into contact with the rail top surface.
The rail clamp device may further include a second clamp mechanism that is attached to the pair of side blocks and clamps the rail, and the second clamp mechanism is provided in each of the pair of side blocks. A second clamp shaft that is passed through the through hole and is rotatably supported, and is provided with screw portions that are wound in reverse directions at positions outside the rail head, and screwed into each screw portion of the second clamp shaft. A pair of second clamp arms that move toward or away from the rail head side surface by rotation of the second clamp shaft, and one end of the second clamp shaft. A clamp handle for rotating the shaft, the second clamp shaft is rotated by rotating the clamp handle constituting the second clamp mechanism, and a pair of second The inner lamp arms each lower end is brought into contact with the side surface of the rail head, even better when so fixed at two points on both sides of the rail head.
Further, in the rail clamp device, the locking portion provided at the lower end portion of the first clamp arm constituting the first clamp mechanism portion has a notch cut out in a triangular shape along the side edge of the bottom portion of the rail. It is even better if the part is formed.
Moreover, the rail fixing method using the rail clamp device according to the present invention is a rail fixing method using the above-described rail clamp device, and first, the clamp lever constituting the first clamp mechanism portion is lowered from the upright state. Or, conversely, the first clamp shaft and the cam are rotated by rotating about half of the moving range, the outer peripheral surface of the cam is brought into contact with the rail top surface, and each of the lower ends of the pair of first clamp arms By locking the locking part to each of both ends of the rail bottom, temporarily fixing at the three points of the rail head top surface and both ends of the rail bottom, and then rotating the clamp handle constituting the second clamp mechanism By rotating the second clamp shaft, the inner sides of the lower ends of the pair of second clamp arms are brought into contact with the side surfaces of the rail head, and both sides of the rail head Finally, the first clamp shaft and the cam are further rotated by further rotating the clamp lever constituting the first clamp mechanism part about the remaining half of the moving range, and the outer peripheral surface of the cam. Are firmly abutted against the rail top surface, and the locking portions of the lower ends of the pair of first clamp arms are firmly locked to the both ends of the rail bottom, so that the rail top and both ends of the rail bottom have three points. It is characterized in that the main fixing is performed with a stronger fixing force than that at the time of temporary fixing.
Moreover, the rail correction apparatus according to the present invention is characterized in that the rail clamp device is provided before and after the rail correction apparatus.

According to the rail clamp device according to the first invention and the rail fixing method using the rail clamp device according to the fifth invention, the first clamp mechanism portion fixes at the three points of the rail top surface and both ends of the rail bottom portion. Therefore, the rail can be fixed in a more stable state than the conventional technique in which the rail is fixed on the top surface of the rail and the side of the jaw (neck).
According to the rail clamp device of the second invention, the cam provided at the center of the first clamp shaft has its outer peripheral surface not in contact with the rail top surface when the clamp lever is in an upright state, and the clamp lever is When moving from the standing state to the lying down state, the first clamp shaft is passed through an eccentric position so that the cam rotates and its outer peripheral surface approaches and contacts the rail top surface. Since it acts in the direction which fixes a rail, a rail can be fixed in the stable state.
According to the rail clamp device concerning the 3rd invention, since it fixes at two points of both sides of a rail head by a 2nd clamp mechanism part, both ends of a rail top surface by a 1st clamp mechanism part, and a rail bottom part In addition to the three-point fixing, the rail is fixed at five points, and the rail can be fixed in a more stable state.
According to the rail clamp device of the fourth invention, the locking portion provided at the lower end portion of the first clamp arm constituting the first clamp mechanism portion has a triangular shape along the side edge of the bottom portion of the rail. Since the notched portion is formed, even when the thickness of the bottom portion of the rail differs depending on the type of the rail, the bottom portion of the rail can be closely attached and locked.
According to the rail cutting device according to the sixth aspect of the invention, the rail clamp device is provided before and after the rail cutting device, and the rail is fixed at two locations. Therefore, both ends of the welding remainder (welding surplus) of the joint portion of the rail Even if the rail is not horizontal, the end is curved, or it is worn and slanted due to secular change, the rail clamp device or rail correction device should be installed at a predetermined angle with respect to the rail. Can be installed.

It is a right side view of the whole rail shaving apparatus which provided the rail clamp device and rail clamp device concerning the present invention forward and backward. It is a right view of the whole rail grinding apparatus which shows the state which the motor and the grinding wheel moved to the left side on the figure. It is a front view which shows the structural example at the time of seeing one of the guide mechanisms provided in the front and back of a rail grinding device from the longitudinal direction of a rail. It is a top view at the time of one clamp opening (rail opening) of the rail clamp apparatus provided via the guide mechanism before and behind a rail grinding apparatus. It is a right view at the time of one clamp opening of the rail clamp apparatus provided before and behind the rail grinding apparatus. It is a front view at the time of one clamp opening of the rail clamp apparatus provided before and behind the rail grinding apparatus. It is a partially notched front view at the time of one clamp opening of the rail clamp apparatus provided before and behind the rail correction apparatus. FIG. 5 is a partial cross-sectional view taken along line AA of FIG. 4 when one of the rail clamp devices provided before and after the rail correcting device is opened. It is a top view at the time of one clamp (rail fixation) of the rail clamp apparatus provided before and behind the rail correction apparatus. It is a right view at the time of one clamp of the rail clamp apparatus provided before and behind the rail correction apparatus. It is a front view at the time of one clamp of the rail clamp apparatus provided before and behind the rail correction apparatus. It is a partially notched front view at the time of one clamp of the rail clamp apparatus provided before and behind the rail correction apparatus. It is the BB partial sectional view of FIG. 9 at the time of one clamp of the rail clamp apparatus provided before and behind the rail correction apparatus.

  Next, the rail clamp apparatus 1 of this embodiment and the rail correction apparatus 2 provided with the rail clamp apparatus 1 in the front and rear will be described.

  FIG. 1 and FIG. 2 are right side views of the rail correcting device 1 in which the rail clamp device 1 of the present embodiment is provided at the front and rear.

  As shown in FIG. 1 and FIG. 2, the rail clamp devices 1 and 1 are provided with rail cutting for correcting the welding residual portion (welding surplus) R ′, the top surface (tread surface) and the head side surface of the joint portion of the rail R. The support frames 24b and 24b of the front and rear guide mechanisms 24 and 24 with respect to the longitudinal direction of the rail R of the main device 2 are provided so as to be removable by welding or bolts (not shown).

  The rail sharpening device 2 is a well-known device, and includes a grinding wheel 21 for grinding a welding residual portion R ′ of a joint portion of the rail R and a crown surface (tread surface) that is uneven or inclined due to aging, and the grinding wheel 21. A pair of guide rods 23 and 23 for guiding the movement of the motor 22 and the grinding wheel 21 and the like in parallel to the rail R, and the rail R on both sides of the pair of guide rods 23 and 23. It is installed and supports both ends of the pair of guide rods 23, 23 via the slide portions 24a, 24a, respectively, so that the rail correcting device 2 is rotated along the rail R top surface in a plane perpendicular to the longitudinal direction of the rail R. A pair of guide mechanisms 24, 24 to be moved, and one of the pair of guide mechanisms 24, 24 (left side in FIGS. 1 and 2) is rotatably supported by a slide 24a and a motor support base 25. In addition, a screw thread is formed on the outer periphery thereof, and the two-stage ball screws 26a and 26b that are moved in the direction parallel to the rail R such as the motor 22 and the grinding wheel 21 by rotation thereof, and the ball screws 26a and 26b are manually A handle 27 or the like to be rotated is provided. In other words, the tip of the second-stage ball screw 26a is fixed to the motor support base 25, while the first-stage ball screw 26b is threaded inward and outward, and the rotation of the second-stage ball screw 26b results in the second-stage ball screw 26b. The ball screw 26a is expanded and contracted, and is configured to move horizontally with respect to the rail grinding device 2.

  FIG. 1 shows a state in which the motor 22 and the grinding wheel 21 are located on the right side of the welding remaining portion R ′ of the rail R with the ball screws 26 a and 26 b extended. Further, in FIG. 2, the motor 22 and the grinding wheel 21 are moved to the left side in the drawing due to the contraction of the ball screws 26a and 26b, and the motor 22 and the grinding wheel 21 are moved to the left side in the drawing of the welding remaining portion R ′ of the rail R. Indicates the state. 1 and 2 show a state in which the rail clamp devices 1 and 1 clamp (rail) the rail R.

  FIG. 3 is a front view showing a configuration example when one of the guide mechanisms 24, 24 provided before and after the rail sharpening device 2 is viewed from the longitudinal direction of the rail R.

  As shown in FIG. 3, the guide mechanism 24 rotates (moves) the rail grinding device 2 along the rail R top surface in a plane perpendicular to the longitudinal direction of the rail R, thereby grinding the grinding wheel 21 ( FIG. 1 and FIG. 2)), the top of the rail R and the welding remainder R 'on the side of the head are reliably corrected. Here, the rail correcting device 2 is rotated (moved) by the chain.

  That is, the guide mechanism 24 includes a slide portion 24a to which the pair of guide rods 23, 23 of the rail correcting device 2 is fixed, and the rail correcting device 2 together with the slide portion 24a in a plane perpendicular to the longitudinal direction of the rail R. And a support frame 24b that is rotated (moved) along the top surface of the rail R as shown by the arrow in FIG. The support frame 24b is configured to straddle the rail R, is fixed to the slide portion 24a, and rotates (moves) along the top surface of the rail R in a plane perpendicular to the longitudinal direction of the rail R. A chain guide 24b2 that guides the chain 24b1, a main driving pulley 24b3 that drives the chain 24b1 by rotation of a handle (not shown), and a pair of driven pulleys 24b4 and 24b4 provided at both ends of the chain 24b1.

  For this reason, the rail correcting device 2 is rotated (moved) along the top surface of the rail R as shown by the arrow in FIG. 3 by the guide mechanism 24 when correcting the welding remainder or the top surface of the rail R. Thus, alignment can be performed easily. In the guide mechanism 24 shown in FIG. 3, it has been described that the rail sharpening device 2 is rotated (moved) along the top surface of the rail R by the chain 24b1, but in the present invention, the guide mechanism shown in FIG. 24 is merely an example, and is not limited to this. For example, the rail shaving device 2 is rotated along the top surface of the rail R by a combination of gears (gears) instead of the chain 24b1. Of course, a guide hole may be provided instead of the chain guide 24b2. In the subsequent drawings, detailed illustration of the guide mechanism 24 is omitted.

  4 to 8 are a plan view and a right side view when one of the rail clamp devices 1 provided on the front and rear sides of the rail correcting device 2 (left side in the drawings in FIGS. 1 and 2) is clamped (rail open). FIG. 5 is a front view, a partially cutaway front view, and a partial cross-sectional view along line AA shown in FIG. 4.

  As shown in FIGS. 4 to 8, the rail clamp device 1 includes a block support portion 12 that supports a pair of side blocks 11 and 11 in a state in which the gap is larger than the width of the head of the rail R, and The first clamp mechanism 13 is attached to the front side surface of the pair of side blocks 11 and 11 and fixed to the rail R at three points as will be described later, and passes through the pair of side blocks 11 and 11. And a second clamp mechanism portion 14 attached to the rail R at two points as will be described later. In addition, the block support part 12 is fixed to the support frame 24b of the guide mechanism 24, and does not rotate with the support frame 24b.

  The first clamp mechanism portion 13 includes a pair of first clamp arms 131 and 131, a first clamp shaft 132, sleeve portions 133 and 133, a cam 134, a clamp lever 135, and the like.

  The pair of first clamp arms 131 and 131 are attached so that their intermediate portions are pivotably supported on the front surfaces with respect to the longitudinal direction of the rail R of the pair of side blocks 11 and 11, respectively. The portions are provided with locking portions 131a and 131a that extend to the bottom surface of the rail R and that form notches 131a1 and 131a1 that are notched in a triangular shape when viewed from the front, where both ends of the bottom portion of the rail R are locked. Yes. In addition, sleeve portions 133 and 133 having female screw portions 133a and 133a that are wound in opposite directions toward the center of the rail R are rotatably attached to the upper ends of the pair of first clamp arms 131 and 131, respectively. Yes.

  The first clamp shaft 132 has male screw portions 132a and 132a that are inserted into and screwed into the female screw portions 133a and 133a of the sleeve portions 133 and 133 of the pair of first clamp arms 131 and 131, respectively, at both ends. And a cam 134 is provided at the center.

  The clamp lever 135 is fixed to the cam 134 and rotates the first clamp shaft 132 and the cam 134 by moving from the standing state to the lying state or vice versa. Here, the rail R is opened in the standing state, and the rail R is fixed in the lying state.

  Here, as shown in FIG. 5, the cam 134 provided at the center of the first clamp shaft 132 does not abut on the top surface of the rail R when the clamp lever 135 is in an upright state. When the clamp lever 135 is moved from the standing state to the lying state as shown in FIG. 1, the first clamp shaft 132 is positioned at an eccentric position so that the cam 134 rotates and its outer peripheral surface comes close to and contacts the rail R top surface. Is passed and fixed. However, in the present invention, the first clamp shaft 132 is not necessarily passed through and fixed to the eccentric position of the cam 134.

  Further, the second clamp mechanism portion 14 of the rail clamp device 1 is provided closer to the rail correcting device 2 than the first clamp mechanism portion 13 as shown in FIG. 5, and a pair of pairs as shown in FIG. Are fixed to the rail R at two points by sandwiching both side surfaces of the head of the rail R.

  That is, as shown in FIG. 8, the second clamp mechanism portion 14 is rotatably supported through the through holes 11 a and 11 a provided in the pair of side blocks 11 and 11, respectively. A second clamp shaft 141 provided with male screw portions 141a and 141a with right and left threads that are wound in opposite directions on both sides of the first and second male screw portions 141a and 141a of the second clamp shaft 141. Screw portions 142a, 142a are screwed together and provided at one end of a pair of second clamp arms 142, 142 that move so as to approach or leave the head side surface of the rail R, and the second clamp shaft 141. And a clamp handle 143 that rotates the second clamp shaft 141 by rotating. Here, convex portions 142b and 142b are provided inside the lower end portions of the second clamp arms 142 and 142 (on the side facing the rail R), respectively. In the present invention, the convex portions 142b and 142b are not essential and may be omitted.

  FIGS. 9 to 13 are a plan view, a right side view, and a right side view of one of the rail clamp devices 1 provided on the front and rear of the rail correcting device 2 (left side in FIGS. 1 and 2). FIG. 10 is a front view, a partially cutaway front view, and a partial cross-sectional view along line BB shown in FIG. 9.

  In this rail grinding apparatus, as shown in FIGS. 9 and 10, when the clamp lever 135 constituting the first clamp mechanism 13 is moved from the standing state to the lying state, the first clamp shaft 132 and the cam 134 are rotated. As shown in FIGS. 10 to 12, the outer peripheral surface of the cam 134 comes into contact with the top surface of the rail R. The locking portions 131a and 131a at the lower ends of the pair of first clamp arms 131 and 131 approach the bottom of the rail R, and lock the bottom of the rail R from both sides.

  That is, the first clamp mechanism 13 of the rail correction device tilts the clamp lever 135 from the upright state to the inclined state, and as shown in FIG. 11 and FIG. It will be fixed at three points on both ends of the bottom.

  As a result, according to the rail clamp device 1 and the rail sharpening device 2, the first clamp mechanism 13 fixes the top of the rail R at the three points of the top surface of the rail R and both ends of the bottom of the rail R. It can be fixed to the rail R in a more stable state than the conventional technique in which the surface and the jaw (neck) side are fixed.

  Further, in this rail shaving apparatus 1, notches 131a1 and 131a1 that are cut out in a triangular shape so as to follow the side edges of the bottom of the rail R are formed at the lower ends of the locking portions 131a and 131a. Even when the bottom of the rail R is different depending on the type of R (“JIS E1101 normal rail and special rail for branching devices”), the bottom of the rail R can be closely attached and locked. There is no need to replace the first clamp arm 131 depending on the type.

  Further, in this rail grinding device 1, in addition to the three-point fixing by the first clamp mechanism unit 13, the second clamp shaft 141 is rotated by rotating the clamp handle 143 constituting the second clamp mechanism unit 14. The protrusions 142b, 142b at the lower ends of the pair of second clamp arms 142, 142 are brought into contact with the side surfaces of the head of the rail R by the male screw portions 141a, 141a on the side surfaces of the second clamp shaft 141. To do.

  That is, in addition to the three-point fixing by the first clamp mechanism unit 13, the second clamp mechanism unit 14 of the rail shaving device rotates the second clamp shaft 141 by rotating the clamp handle 143, and FIG. As shown in FIG. 2, the pair of second clamp arms 142 and 142 are fixed at two points on both side surfaces of the rail R head.

  Therefore, according to the rail clamp device 1 and the rail correction device 2, the first clamp mechanism 13 not only fixes the top of the rail R at the three points of the top surface and the bottom of the rail R but also the second clamp. Since the mechanism 14 fixes the two points on both sides of the head of the rail R, the top of the rail R, both ends of the bottom of the rail R, and five points on both sides of the head of the rail R are fixed. Thus, the rail R can be fixed in a more stable state.

  As a result, as shown in FIGS. 1 and 2, in the rail correcting device 2 in which the rail clamp device 1 is provided at the front and rear, the rail clamp device 1 is securely fixed to the rail R in a horizontal state, and 5 Since the rail clamp device 1 is hardly displaced and tilted during the correction operation by the point support, the welding residual portion R ′ at the joint of the rail R can be reliably corrected horizontally.

  In particular, in this rail clamp device 1, the cam 134 provided in the center of the first clamp shaft 132 has its outer peripheral surface not in contact with the top surface of the rail R when the clamp lever 135 is in an upright state. When the 135 is moved from the standing state to the lying state, the locking portions 131a and 131a at the lower ends of the pair of first clamp arms 131 and 131 lock the both sides of the bottom of the rail R, and at the same time the outer periphery of the cam 134. Since the surface abuts on the top surface of the rail R and is fixed to the rail 3 by the three points, the rail R can be easily fixed at three points.

  Moreover, in this rail clamp apparatus 1, since it comprised so that the 1st clamp mechanism part 13 and the 2nd clamp mechanism part 14 could operate | move independently, in the rail fixing method using this rail clamp apparatus 1, for example, If the rail R is fixed to the rail R in three stages as follows, the rail clamp device 1 or the rail correction device 2 is placed on the top surface of the rail R (stepping step) such as leveling of the rail clamp device 1 or the rail correction device 2. It becomes easy to attach at a predetermined angle with respect to the surface.

  That is, in the first stage, the first clamp shaft 132 and the cam 134 are rotated by rotating the clamp lever 135 constituting the first clamp mechanism unit 1 from the standing state to the lying state by about half of the moving range. The outer peripheral surface of the cam 134 is brought into contact with the top surface of the rail R, and the locking portions 131a and 131a at the lower ends of the pair of first clamp arms 131 and 131 are locked at both ends of the bottom portion of the rail R, respectively. Then, it is temporarily fixed at the three points of the top surface of the rail R and both ends of the bottom of the rail R. Then, at the time of the temporary fixing in the first stage, the rail clamp device 1 and the rail correcting device 2 are temporarily fixed at a predetermined angle with respect to the top surface (tread surface) of the rail R by using a level or an angle meter. To do.

  Next, in the second step, the second clamp shaft 141 is rotated by rotating the clamp handle 143 that constitutes the second clamp mechanism portion 14, and the convex portions inside the lower end portions of the pair of second clamp arms 142 and 142 are respectively rotated. The parts 142b and 142b are brought into contact with the side surface of the head of the rail R, and two points on both sides of the head of the rail R are fixed. Note that the fixing force at the two points on both sides of the head of the rail R at this time is stronger than the fixing force at the time of temporary fixing in the first stage. Accordingly, at the time of temporary fixing in the first stage, the rail clamp device 1 and the rail sharpening device 2 are temporarily fixed at a predetermined angle with respect to the top surface (tread surface) of the rail R. Thus, the rail clamp device 1 and the rail correction device 2 can be reliably held at a predetermined angle with respect to the top surface (tread surface) of the rail R.

  Then, in the final third stage, the first clamp shaft 132 and the cam 134 are further rotated by further rotating the clamp lever 135 constituting the first clamp mechanism portion 13 about the remaining half of the moving range, and the cam 134 The outer peripheral surface of the rail R is brought into strong contact with the top surface of the rail R, and the locking portions 131a and 131a at the lower ends of the pair of first clamp arms 131 and 131 are firmly locked at both ends of the bottom portion of the rail R, respectively. Then, the fixing force at the three points of the top surface of the rail R and both ends of the bottom portion of the rail R is made stronger than that at the first stage of temporary fixing, and then tightened and finally fixed (final tightening).

  Therefore, according to the rail fixing method using the rail clamp device 1, the rail clamp device 1 and the rail rectifying device 2 are attached to the top surface (tread surface) of the rail R at the time of the temporary fixing at the three points in the first stage. Temporarily fixed at a predetermined angle, and these devices are securely held at a predetermined angle with respect to the top surface (tread surface) of the rail R when fixing the two points in the second stage. Since it is possible to perform the final fixing (final tightening) by the additional tightening fixing, the devices can be set more reliably at a predetermined angle.

  In the above description, the rail clamp device 1 is fixed to the rail clamp device 1 at the three points of the top surface of the rail R and both ends of the bottom of the rail R, and the two points on both sides of the head of the rail R. However, the present invention is not limited to this, and it is sufficient that at least the first clamp mechanism portion 13 is provided. In the rail fixing method using the rail clamp device 1, as described above, the rail fixing method is described in three stages. However, in the present invention, the three-stage rail fixing method is an example. Alternatively, the first clamp mechanism 13 may be fixed at three points and then the second clamp mechanism 14 may be fixed at two points, or vice versa. Of course, three points may be fixed by one clamp mechanism 13.

DESCRIPTION OF SYMBOLS 1 Rail clamp apparatus 11, 11 Side block 12 Block support part 13 1st clamp mechanism part 131,131 1st clamp arm 131a, 131a Locking part 132 1st clamp axis 133, 133 Sleeve part 134 Cam 135 Clamp lever 14 14th 2 Clamp mechanism 141 Second clamp shaft 142, 142 2nd clamp arm 143 Clamp handle 2 Rail grinding device 21 Grinding wheel 22 Motor 23 Guide rod 24, 24 Guide mechanism 25 Motor support 26a, 26b Ball screw 27 Handle

Claims (6)

A rail clamp device for fixing the rail correction device to the rail, which is provided before and after the rail longitudinal direction of the rail correction device that corrects the welding remainder of the rail, the top surface and the side surface of the head,
A block support portion that supports the pair of side blocks in a state of being spaced apart from the width of the rail head portion, and a first clamp mechanism portion that is attached to the pair of side blocks and sandwiches the rail. ,
The first clamp mechanism is
Each side block is rotatably supported on the front surface with respect to the longitudinal direction of the rail, and the lower end portion extends to the rail bottom surface, and a locking portion for locking both end portions of the rail bottom portion is provided inside the lower end portion. On the other hand, a pair of first clamp arms each having a sleeve portion rotatably attached to the upper end portion in the direction of the center of the rail and having mutually oppositely wound screw portions,
A first clamp shaft having a screw portion that is screwed into a screw portion of a sleeve portion of each of the pair of first clamp arms provided at both ends, and a cam provided in the center;
A first clamp shaft and a clamp lever that rotates the cam by moving from the standing state to the lying state or vice versa, fixed to the cam; and
The first clamp shaft and the cam are rotated by moving the clamp lever constituting the first clamp mechanism from the standing state to the lying state or vice versa, the outer peripheral surface of the cam is brought into contact with the rail top surface, and A rail clamp device characterized in that a locking portion of each of the lower end portions of the pair of first clamp arms is locked to each of both end portions of the rail bottom portion and fixed at three points of the rail top surface and both end portions of the rail bottom portion. In the rail clamp device according to claim 1,
The cam provided in the center of the first clamp shaft does not come into contact with the rail top when the clamp lever is in the upright state, and when the clamp lever is moved from the upright state to the lying down state, The rail clamp device is characterized in that the first clamp shaft is passed through an eccentric position so that the outer peripheral surface approaches and comes into contact with the rail top surface. In the rail clamp device according to claim 1 or 2,
Furthermore, it has a second clamp mechanism part that is attached to the pair of side blocks and clamps the rail,
The second clamp mechanism is
A second clamp shaft that is rotatably supported by being passed through through holes provided in each of the pair of side blocks, and is provided with screw portions that are wound in reverse directions at positions outside the rail heads,
A pair of second clamp arms that are screwed into the respective screw portions of the second clamp shaft and move toward or away from the rail head side surface by rotation of the second clamp shaft;
A clamp handle that is provided at one end of the second clamp shaft and rotates the second clamp shaft;
The second clamp shaft is rotated by rotating the clamp handle constituting the second clamp mechanism, and the inner side of the lower end of each of the pair of second clamp arms is brought into contact with the side surface of the rail head. The rail clamp device is characterized by being fixed at two points on both side surfaces of the part. In the rail clamp device according to any one of claims 1 to 3,
The locking portion provided at the lower end portion of the first clamp arm constituting the first clamp mechanism portion is formed with a notch portion that is cut out in a triangular shape along the side edge of the bottom portion of the rail. Rail clamp device. A rail fixing method using the rail clamp device according to claim 3 or 4,
First, the first clamp shaft and the cam are rotated by rotating the clamp lever constituting the first clamp mechanism portion from the standing state to the lying down state or vice versa by rotating about half of the moving range, and the outer peripheral surface of the cam is moved to the rail top. Abutting against the surface, and engaging the locking portions of the lower ends of the pair of first clamp arms with the both ends of the rail bottom, and temporarily fixing at the three points of the rail top surface and both ends of the rail bottom. ,
Then, the second clamp shaft is rotated by rotating the clamp handle constituting the second clamp mechanism, and the inside of the lower end of each of the pair of second clamp arms is brought into contact with the side surface of the rail head, Fix at two points on both sides of the rail head,
Finally, the first clamp shaft and the cam are further rotated by further rotating the clamp lever constituting the first clamp mechanism part about the remaining half of the movement range, and the outer peripheral surface of the cam is strongly applied to the rail top surface. At the same time, the locking portions of the lower ends of the pair of first clamp arms are firmly locked to the both ends of the rail bottom, and the fixing force at the three points of the rail top and both ends of the rail is temporarily fixed. A rail fixing method using a rail clamp device characterized in that the main fixing is stronger than the time.   A rail shaving apparatus comprising the rail clamping apparatus according to any one of claims 1 to 4 before and after the rail shaving apparatus.

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