JP4932780B2 - Rail fall prevention device - Google Patents

Description

  According to the present invention, in order to prevent the rail from falling due to tension by a tensioner when the rail is changed, the roller is fixedly disposed at an appropriate position along the longitudinal direction of the rail, particularly in the vicinity of the curved portion of the rail. The present invention relates to a rail overturn preventer that is brought into contact with a side surface and receives a load in a rail overturn direction caused by a tension force generated by the tension device to prevent the rail from falling over.

  A pressure receiving rod with a roller pivotally attached to the tip of a frame having leg pieces on both sides of the upper piece is provided to be movable forward and backward, and each leg portion is provided on a side wall of a groove provided in a concrete sleeper. A rail overturn preventer in which one end of a piece is locked while the roller is locked to a side surface of the rail to prevent the rail from falling is known (for example, Patent Document 1).

JP-A-8-302604

  The rail overturn preventer is provided with side walls facing the rails of the grooves on both sides of the rails laid on the sleepers made of precast concrete, and the rails are mounted in the grooves by the installed spring-type fastening devices. When using side walls (edges) facing the rail of the groove of the rail device that is fastened to the sleepers, both side edges of the groove facing the rail are parallel to each other. Even if the side edge is used, one end of each leg piece is locked to the side edge and the roller is locked to the side surface of the rail to prevent the rail from falling. In other words, the rail overturn prevention, which is the intended purpose, can be prevented by arranging one type of rail overturn protector in the opposite direction for both the inside and outside of the rail (both left and right along the longitudinal direction). Can function.

  However, the both side edges facing the rail may be arranged symmetrically with respect to the rail as the axis of symmetry due to the difference in the spring type of the spring-type fastening device. With a structure that only locks one end of the leg piece of the frame to the side wall (edge), it can be applied to one side (inside) along the longitudinal direction of the rail, but not to the other side (outside). , You have to prepare each one (two types).

  Therefore, the current situation is that inconvenience is caused in the inventory management as well as the transportation to the site.

  The present invention eliminates the above-described drawbacks of the prior art, and a pair of slopes facing the rails, with the grooves provided in the concrete sleepers symmetrically angled with respect to the rails with the rails on the sleepers as the symmetry axis. The present invention was devised for the purpose of providing a rail overturn preventer that can be placed on either side of a side wall and can receive a load in the rail overturning direction.

  A pressure receiving rod with a roller pivotally attached at the tip to a frame with relative leg pieces on both sides of the upper piece can be moved forwards and backwards, and consists of a side edge of a groove provided in a concrete sleeper. In addition, the rear end of each leg piece is locked to one of a pair of diagonal step portions in a direction that intersects the rail in plan view symmetrically with respect to the rail on the sleeper as an axis of symmetry. An improved rail overturn preventer that is locked to the side surface of the rail to prevent the rail from overturning, from one of the diagonally stepped portions locked by the one leg piece. When the rear end of the one leg piece is locked to the other diagonal step on the other leg piece side to be locked to the one diagonal step in the portion adjacent to the rail, The other end of the other leg piece is overlapped behind the rear end of the other leg piece, The locking pieces to be locked to a portion of the direction the stepped portion is of a rotatably pivoted configuration.

  According to the present invention, when the outer walls (edges) of the grooves provided on both sides sandwiching the rail are parallel to each other (parallel to the rail at an angle), of course, the rail If the rails are tilted in plan view with the rail as the axis of symmetry, in the case of one side on both the left and right sides along the rail, one end of the leg piece is locked to the one outer wall. Thus, in the case of the other side, the locking piece is locked to the other outer wall, so that a fall prevention effect can be expected, and a suitable fall prevention device can be provided in handling.

  The drawings show an embodiment of the rail overturn preventer according to the present invention, FIG. 1 is a plan view of a rail in which the rail overturn preventer is arranged, FIG. 2 is a partially cutaway enlarged plan view of FIG. 2 is a side view of the rail overturn preventer when the locking piece is projected, FIG. 5 is a bottom view of FIG. 4, FIG. 6 is a side view of FIG. 4, and FIG. FIG. 8 is a side view of the state in which the locking piece is accommodated, FIG. 9 is a bottom view of FIG. 8, FIG. 10 is a sectional view of the state in which the rail is fastened, and FIG. It is an expanded sectional view.

  The rail overturn preventer A according to the present invention is configured by a side edge of a groove (recessed portion) 1 for receiving pressure of a spring cradle Bb of a fastening bracket B for fastening a rail R to a concrete sleeper C, and the sleeper The rail R on the C is disposed between one side of the pair of diagonal steps 1a, 1a symmetrically along the direction intersecting the rail R and the side surface Rb of the rail R symmetrically about the axis of symmetry. This prevents the rail R from falling over.

  The groove 1 is provided in a central portion of the upper surface of the sleeper C except for both sides in the longitudinal direction. The rail R placed in a shallow portion at the center in the longitudinal direction of the groove 1 is connected to the rail R Are fastened with a fastening bracket B interposed between one of the oblique step portions 1a, and the oblique step portions 1a and 1a gradually approach each other through the rail R from one end to the other end. It is provided approximately symmetrically as an axis of symmetry, and is configured at the side end of the groove 1 as described above. However, independent grooves (recessed portions) are provided on both sides along the longitudinal direction of the rail R, and Even if the present invention is applied, there is no inconvenience.

  As shown in FIG. 10, the fastening bracket B includes a bracket body Ba that is fastened to the sleepers C with bolts b and presses the pedestal portion Rc of the rail R, and the bracket body Ba and the diagonally stepped portions 1a and 1a. And the spring cradle Bb on the wedge to prevent between the rail R and the rail R is fastened to the sleeper C by being arranged on both sides of the rail R.

  In the case shown in the figure, they are opposed to each other via the rail R and are arranged in a crossing direction with respect to the rail R, and are arranged at symmetrical positions with respect to the rail R as an axis of symmetry (to form a square shape in plan view). A spring cradle Bb is pushed (slidably fitted) between the stepped portions 1a, 1a and the metal fitting body Ba to fasten the rail R to the sleeper C.

  When the rail R is changed to the sleeper C with the fastening bracket B, the fall of the rail R on the curved path is prevented in order to prevent the rail R on the curved path from being overturned by the tension of the tensioner. The preventer A is used by being interposed between the oblique step 1a and the side surface Rb of the rail R.

  The rail overturn preventer A is constructed by assembling the base frame 2, the cylindrical body 3, the pressure receiving material 4 and the pressing bolt 5 to each other. The rail side surface Rb and the rail side surface Rb are crossed to the sleeper C as described above. It is interposed between one diagonal step 1a, and the rear end side of the leg piece of the frame 2 is locked to the diagonal step 1a, and the roller provided to the pressure receiving material 4 on the rail side surface Rb is locked. This prevents the rail R from toppling over.

  The underframe 2 has one rear end 7a on both sides of the upper piece 6 provided with a notch 6a for engaging the bolt rod b for fastening the fastening bracket B at the front end on the side arranged on the rail R side. Is provided with a pair of leg pieces 7, 7 'positioned in front of the other rear end 7'a, and is located on the front side (rail R side) from the rear end 7'a of the other leg piece piece 7'. A standing piece 8 is laid on the front side of one leg piece 7 having a rear end 7a at a position, and a pair of upper and lower parts are placed on the inner surface of the one leg piece 7 on the rear end 7a side. The support piece 9, 9 is provided, the base piece is engaged with the support piece 9, 9, and the locking piece 10 overlapping the rear end 7a at the rear is pivotally attached to the shaft 11 in a freely pivotable manner. is there.

  The underframe 2 has the rear ends 7a and 7'a of the leg pieces 7 and 7 on one side of the diagonally stepped parts 1a and 1a 'provided on the sleeper C (one side via the rail R). When the fall prevention device A is arranged, the rear end 7a of one leg piece 7 is separated from the rail R to the portion pa of the one oblique step 1a, and the other one of the oblique steps 1a. The rear end 7'a of the other leg piece 7 'is engaged with the portion pb (indicated by a two-dot chain line in FIG. 2), and the rail is prevented from tipping over to the other oblique step 1a' side. When the container A is arranged, the rear end 7'a of the other leg piece 7 'is moved from the rail R to the portion pa' on the side close to the rail R of the step portion 1a '. One leg piece 7 is pivoted about the shaft 11 to protrude from the frame 1 to the other part pb 'of the obliquely stepped portion 1a' that is separated from the base frame 1. It is to the coefficient Tomekoma 10 superimposed behind the rear end 7a to use each and engaged (FIG. 2, anti-tip device indicated by the solid line).

  The cylindrical body 3 is a piece 3a projecting on the circumferential side, and is placed on the upright piece 8 of the frame 2 and fastened with bolts 12 so as to be installed horizontally in the front-rear direction of the frame 1. A pressure-sensitive material 4 is attached to the cylindrical body 3 so as to protrude from the cylindrical body 3 of the pressure-sensitive material 4 and protrude from the distal end of the upper piece 6 of the underframe 2 to the tip of the main body rod 4a. The roller 4b to be brought into contact with the side surface Rb is pivotally mounted, and is inserted into the rear end of the main rod 4a located in the cylindrical body 3 by screwing into the nut member 3b fixed to the cylindrical body 3. The tip of the pressing bolt 5 is brought into contact, and the pressure receiving material 4 (main rod 4a) is pressed by the pressing bolt 5 and advances along the cylinder 3, and the roller 4b provided at the tip is pressed against (locked to) the rail side surface Rb. )

  When the rail overturn protector A is arranged on one 1a side (one side through the rail R) of the diagonal stepped portions 1a and 1a ′ provided on the sleepers C, the portion pa of the one diagonal stepped portion 1a The rear end 7a of one leg piece 7 is separated from the rail R from the portion pa, and the rear end 7'a of the other leg piece 7 'is applied to the other portion pb of the oblique step portion 1a. On the other hand, when the roller 4b of the pressure receiving material 4 combined with the cylindrical body 3 is applied to the side surface Rb of the rail R and the pressing bolt 5 is rotated, the pressing bolt 5 moves forward along the cylindrical body 3 to receive the pressure. The material 4 is pressed, and the roller 4b at the tip of the pressure receiving material 4 contacts the side surface Rb of the rail R, while the rear ends 7a and 7'a of the leg pieces 7 and 7 'correspond to the diagonal step portions 1a, respectively. Thus, the rail R can be brought into contact with the portion pa or pb to prevent the rail R from falling.

  Further, when the rail overturn protector A is disposed on the other oblique step 1a 'side, the other leg piece 7' is placed on the portion pa 'on the side close to the rail A of the step 1a'. The rear end 7'a is rotated around the shaft 11 to protrude from the frame 1 to the other portion pb 'of the oblique step 1a' that is separated from the rail R by the portion pa '. In the same manner as when the rail overturn protector A is disposed on the one oblique direction step portion 1a side, the latching pieces 10 overlapped behind the rear end 7a of the piece 7 are respectively applied. When the pressure bolt 5 is rotated by applying the roller 4b of the pressure receiving material 4 combined with the body 3 to the side surface Rb of the rail R, the pressure bolt 5 advances along the cylindrical body 3 and presses the pressure receiving material 4. The roller 4b at the front end of the pressure receiving material 4 is in contact with the side surface Rb of the rail R, while being superimposed on the rear end 7a of the leg piece 7. The fitted locking piece 10 is closer to the corresponding portion pb ′ of the oblique step portion 1a, and the rear end 7′a of the other leg piece 7 ′ is closer to the rail R than the portion pb ′ of the step portion 1a. By contacting the portions pb, the rail R can be prevented from falling.

  In the figure, reference numeral 18 denotes a restricting device for restricting the rotation of the locking piece 10 about the shaft 11, and the inside of the cylindrical main body 18 b of the lower end opening fitted and fixed to the upper support piece 9. A restrictor 18a that is urged and protruded by a spring 18c installed inside from the opening is provided, and the restrictor 18a is moved in and out of the movement path of the locking piece 10, and the locking piece 10 protrudes and is The restrictor 18a protrudes to restrict the movement of the locking piece 10 in each case when it overlaps the tip edge 7a of the leg piece 7 and when it is accommodated in the frame 2, and it is in the accommodated state from the projected state. When shifting from the housed state to the projecting state, it is pressed by the locking piece 10 and temporarily immerses in the cylindrical main body 18b (upper support piece 9) against the bias of the spring 18c. is there.

The top view of the rail which has arrange | positioned the rail fall prevention device. FIG. 2 is an enlarged plan view of a part of FIG. The side view of FIG. The side view of a rail fall prevention device when a locking piece is made to protrude. The bottom view of FIG. The side view of FIG. FIG. 5 is a partially cutaway plan view of FIG. 4. The side view of the state which accommodated the locking piece. The bottom view of FIG. Sectional drawing of the state which fastened the rail. The expanded sectional view of a control apparatus part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Groove 1a, 1a 'Diagonal direction step part 2 Base frame 4 Pressure receiving material 4b Roller 6 Upper piece 7, 7' Leg piece 7a, 7'a Rear end 11 Locking piece

Claims (1)

  A pressure receiving material with a roller pivotally attached at the tip to a frame with relative leg pieces on both sides of the upper piece is configured to move forward and backward, and is composed of side edges of grooves provided in a concrete sleeper. In addition, the rear end of each leg piece is locked to one of a pair of diagonal steps in a direction that crosses the rail in plan view symmetrically about the rail on the sleeper as an axis of symmetry, while the roller is In the rail overturn preventer that is locked to the side surface of the rail to prevent the rail from overturning, the rear end of one of the leg piece pieces is engaged with the rail from the one oblique stepped portion. When the rear end of the one leg piece is locked to the other diagonal piece on the other leg piece side to be locked to the one diagonal step in the adjacent portion, the free end On the other leg piece so as to overlap the rear end of the other leg piece. Of the locked to the locking pieces pivotally connected pivotally to the part, the rail anti-tip device.

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