JP6091223B2 - Sleeper fixing device - Google Patents

Description

  The present invention relates to a sleeper fixing device for fixing a sleeper provided when a rail is laid in a pipeline.

  Conventionally, a non-open cutting method in which a pipe is laid by connecting a plurality of segments by connecting the main girder of a segment with bolts and nuts in the tunnel while excavating the tunnel in the ground using a small shield machine Has been done. The pipe formed in this way is called a sheath pipe and plays a role as a wall surface of the tunnel. Hereinafter, the pipe line will be described as a sheath pipe line.

  After the sheath pipe is formed as described above, a main pipe such as a water pipe is further laid in the sheath pipe. The main pipe line is laid by carrying a plurality of carry-in pipes into the sheath pipe line and connecting these carry-in pipes. As shown in FIGS. 17 and 18, since the carry-in pipe 105 is carried by the carriage 106 in the sheath pipe 103, when the main pipe is laid, the carriage 106 is supported and guided for traveling. A pair of left and right rails 107 are laid in the sheath duct 103.

  Both rails 107 are supported on a plurality of sleepers 108 provided in the sheath duct 103. These sleepers 108 are arranged so as to form a chordal shape with respect to an arc surface formed by the upper surface of the main girder 102 on the bottom side at the joint portion between the segments 101. Both ends of each sleeper 108 are fixed to the main beam 102 by a clamp 109 (sleeper fixing device).

  As shown in FIGS. 19 and 20, the clamp tool 109 includes an inverted U-shaped main body 110 straddling the main girder 102 of the connected segment 101, and three bolts 111 a to 111 c provided on the main body 110. Have. Among these, the 1st and 2nd volt | bolts 111a and 111b oppose in the pipe length direction A, and are arrange | positioned on the same axial center. The clamp 109 is attached to the main girder 102 by the main girder 102 being sandwiched between the first and second bolts 111a and 111b. The third bolt 111c is orthogonal to the first and second bolts 111a and 111b, and presses the end of the sleeper 108 against the inner peripheral end of the main beam 102 from above.

  According to this, both ends of the sleepers 108 are arranged at the inner peripheral end of the main beam 102, and as shown in FIGS. 19 and 20, the clamp tool 109 is set so as to straddle the main beam 102 from above, By tightening the second bolts 111a and 111b, the main girder 102 is sandwiched between the first and second bolts 111a and 111b, and the clamp tool 109 is attached to the main girder 102. Further, by tightening the third bolt 111c, the end of the sleeper 108 is pressed against the inner peripheral end of the main girder 102 from above, whereby the end of the sleeper 108 is fixed to the main girder 102.

  Note that a sleeper fixing device including the clamp 109 as described above is described in, for example, Patent Document 1 below.

Patent 3725962

  However, in the above-described conventional type, the third bolt 111c is loosened by the influence of vibration or the like generated when the carriage 106 travels on the rail 107, and the main body 110 of the clamp tool 109 is moved as shown by the phantom line in FIG. There is a problem that the first and second bolts 111a and 111b rotate to the outside and roll over, and the third bolt 111c is detached from the upper end of the sleeper 108 outward. When such a problem occurs, the end of the sleeper 108 is not fixed, and the end of the sleeper 108 is lifted from the main girder 102, and the position of the sleeper 108 may be displaced, or the carriage 106 may derail from the rail 107. is there.

  An object of this invention is to provide the sleeper fixing device which can prevent reliably the edge part of a sleeper rising.

In order to achieve the above object, according to the first invention, the segment has a main girder having an inner flange shape,
By connecting the main girders in the pipe length direction, a plurality of segments are connected to form a pipe line,
A sleeper fixing device for fixing a sleeper provided on a main girder when laying rails in a pipeline,
The sleeper fixing device has a fixing base portion, an attachment portion for attaching the sleeper fixing device to the main girder, and a pressing portion for pressing the end portion of the sleeper from above.
The presser part is provided on the fixed base part.
The fixed base portion has a receiving portion that abuts on the inner side of the segment and receives a rotational moment in a separating direction in which the presser portion is detached from the end portion of the sleeper with the attachment portion as a center.

  According to this, by attaching the fixing base part to the main girder by the attaching part, the presser part presses the end part of the sleeper from above, and the end part of the sleeper is fixed to the main girder. In addition, due to the influence of vibration, etc., even if the fixed base part tries to rotate in the separation direction around the mounting part, the receiving part abuts on the inside of the segment and receives the rotational moment in the separation direction. Is prevented from rotating in the direction of detachment, and the presser portion can be prevented from detaching from the end of the sleeper. Thereby, it can prevent reliably that the edge part of a sleeper floats.

In the sleeper fixing device according to the second aspect of the present invention, the mounting portion is provided on the fixing base, the main girder is sandwiched from both sides in the pipe length direction, and the fixing base is attached to the main girder.
The receiving portion is in contact with the inner periphery of the main girder and receives the rotational moment.

  According to this, by fixing the main girder from both sides with the attaching part, the fixing base part is attached to the main girder, the presser part presses the end part of the sleeper from above, and the end part of the sleeper is fixed to the main girder. Further, even if the fixed base portion tries to rotate in the detaching direction around the mounting portion, the receiving portion comes into contact with the inner periphery of the main girder and receives the rotational moment in the detaching direction.

In the sleeper fixing device according to the third aspect of the present invention, a pair of attachment portions are provided in the tube length direction,
The main girder is sandwiched between both mounting parts,
At least one of the both attachment portions has a screw member that can be fed and moved in the tube length direction.

According to this, the fixing base part is attached to the main girder by tightening the screw member and sandwiching the main girder from both sides with both attachment parts.
In the sleeper fixing device according to the fourth aspect of the present invention, the presser portion is located directly above the attachment portion as seen from the tube length direction.

  According to this, it is possible to reduce the rotational moment in the detaching direction around the mounting portion. Thereby, the load which acts on a receiving part is reduced and a deformation | transformation etc. of a receiving part can be prevented.

  As described above, according to the present invention, it is possible to reliably prevent the ends of the sleepers from floating.

It is the schematic of the sheath pipe line and the main pipe line in the 1st Embodiment of this invention. It is the figure which looked at the segment which comprises the same as that from the inner peripheral side. FIG. 3 is an XX arrow view in FIG. 2. It is a figure when carrying a carrying-in pipe with a trolley | bogie in the same as in a sheath pipe line. It is a figure of the rail and trolley laid in the same as that in a sheath channel. It is a figure of the sleeper installed in the sheath pipe line and the sleeper fixing device. It is a front view of the sleeper fixing device. It is a XX arrow line view in FIG. It is a YY arrow line view in FIG. It is a figure of the sleeper in the 2nd Embodiment of this invention, and a sleeper fixing device. It is a top view of the sleeper fixing apparatus in the 3rd Embodiment of this invention. It is a XX arrow line view in FIG. It is a side view of the sleeper fixing device in the 4th Embodiment of this invention. It is a figure of the sleeper in the 5th Embodiment of this invention, and a sleeper fixing device. It is a XX arrow line view in FIG. It is a YY arrow line view in FIG. It is a figure when the carrying-in pipe is conveyed with the trolley | bogie conventionally in a sheath pipe line. It is a figure of the rail laid in the same as that in a sheath pipe line. It is a figure of the sleeper installed in the sheath pipe line and the sleeper fixing device. It is a XX arrow line view in FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
In the first embodiment, as shown in FIG. 1, reference numeral 1 denotes a sheath pipe that is an example of a pipe, and the sheath pipe 1 includes a plurality of segments 2 as in the conventional one described in the background art. Is laid in the ground by connecting.

  As shown in FIGS. 2 and 3, each segment 2 includes an outer plate portion 5 curved in an arc shape, a pair of main girders 6, a pair of joint plates 7, and a plurality of reinforcing members 8. Yes. The main girder 6 has an inner flange shape, and is provided at both end portions of the outer plate portion 5 in the tube length direction A of the sheath conduit 1 so as to protrude inward. The plurality of segments 2 are connected in the pipe length direction A by connecting the main beams 6 of the plurality of segments 2 with bolts 43a and nuts 43b (see FIG. 9).

  The joint plate 7 is provided so as to protrude inward at both end portions of the outer plate portion 5 in the circumferential direction B of the sheath pipe line 1. By connecting the joint plates 7 of the plurality of segments 2 with bolts, nuts (not shown) or the like, the plurality of segments 2 are connected in the circumferential direction B (see FIG. 4).

  The reinforcing member 8 is a plate-like member and an angle-like member, and is provided on the inner peripheral surface of the outer plate portion 5 by welding or the like. By connecting the plurality of segments 2 in the pipe length direction A and the circumferential direction B, the sheath pipe line 1 is formed. For this reason, a pair of main girders 6 connected to each other are formed on the entire inner circumference of the sheath pipe line 1 at predetermined distances in the pipe length direction A.

  As shown in FIGS. 4 and 5, the sheath pipe 1 includes a rail 12 including a pair of left and right rails 11, and a carriage 13 supported and guided by the rails 11 so as to be able to travel in the sheath pipe 1. It has been. The carriage 13 carries the carry-in pipe 14 carried into the sheath pipe line 1, and a plurality of carry-in pipes 14 are connected in the sheath pipe line 1 to form a main pipe line 16 such as a water pipe. Is done.

  Both rails 11 are supported and fixed by a plurality of sleepers 18. Each sleeper 18 is provided on the upper plate portion 18a, a square frame-like base frame 18b provided on the lower portion of the upper plate portion 18a, and on both left and right sides of the base frame 18b at both lower portions of the upper plate portion 18a. And a reinforcing plate 18c, which is supported by the main girder 6 at the bottom in the sheath pipe 1.

  Each sleeper 18 is fixed to the main beam 6 side by a pair of left and right sleeper fixing devices 21. As shown in FIGS. 6 to 9, the sleeper fixing device 21 includes a fixing base part 22, an attachment part 23 for attaching the fixing base part 22 to the main girder 6, and a presser claw 24 ( An example of a presser part).

  The fixed base 22 has a flat base 22a and a pair of mounting plates 22b provided downward from one end of the base 22a. Both mounting plates 22b are opposed to each other with a predetermined interval in the tube length direction A, and a mounting space 25 is formed between both mounting plates 22b.

The presser claw 24 is provided on the base 22a of the fixed base 22 by welding or the like.
A pair of attachment portions 23 are provided in the tube length direction A, and each includes a nut 23a provided by welding or the like on the attachment plate 22b of the fixing base portion 22, and a bolt 23b (an example of a screw member) screwed into the nut 23a. And have. A pair of bolts 23b are provided in the tube length direction A, and can be fed and moved in the tube length direction A by rotation. As shown in FIG. 8, the two joined main girders 6 are sandwiched from both sides in the tube length direction A and fixed. The base portion 22 is attached to the main girder 6. As shown in FIG. 7, the presser claw 24 is located immediately above the attachment portion 23 when viewed from the tube length direction A.

  The fixed base part 22 has a receiving part 27 at the other end of the base 22a. As shown in FIG. 6, the receiving portion 27 is in contact with the inner peripheral edge (an example of the inside of the segment 2) of the main girder 6, and the presser claw 24 moves upward from the end of the sleeper 18 around the bolt 23 b. This is the part that receives the rotational moment M in the direction of separation.

Hereinafter, the operation of the above configuration will be described.
As shown in FIG. 1, in order to lay the sheath pipe 1 in the ground and lay the main pipe 16 such as a water pipe in the sheath pipe 1, for example, the following non-cutting method is used.

  First, while excavating a tunnel in the ground using a small shield machine, the main beams 6 of the segments 2 are connected to each other by bolts 43a and nuts 43b in the tunnel to connect the plurality of segments 2 in the pipe length direction A. At the same time, the joint plates 7 of the segment 2 are connected to each other by bolts and nuts to connect the plurality of segments 2 in the circumferential direction B, thereby forming the sheath pipe line 1.

  Thereafter, as shown in FIG. 5, a plurality of sleepers 18 are installed in the sheath pipe 1, and the rails 11 are installed on the sleepers 18. At this time, both ends of each sleeper 18 are fixed to the main beam 6 side by using the sleeper fixing device 21.

  That is, the sleeper 18 is installed on the main girder 6 at the bottom in the sheath duct 1 and the main girder 6 is inserted into the mounting space 25 of the fixing base 22 of the sleeper fixing device 21 from below as shown in FIG. Then, the base 22a is installed on the main beam 6. Thereafter, both bolts 23b are tightened, and the main girder 6 is sandwiched from both sides in the pipe length direction A by both bolts 23b, whereby the fixing base portion 22 is attached to the main girder 6. As shown in FIG. Since the end of the sleeper 18 is pressed from above, the end of the sleeper 18 is fixed to the main girder 6.

  After the sleepers 18 are fixed as described above, the carriage 13 is arranged on the rail 11, and as shown in FIG. 4, the carry-in pipe 14 is carried into the sheath pipe 1 and loaded on the carriage 13. The carrying pipe 14 is transported to the connection site in the sheath pipe line 1, and the plurality of carry-in pipes 14 are connected to each other to form the main pipe line 16.

  Further, even if the fixed base portion 22 tries to rotate in the direction of detachment about the bolt 23b due to vibration or the like when the carriage 13 travels on the rail 11, as shown in FIG. Since it contacts the inner peripheral edge of the girder 6 and receives the rotational moment M in the separation direction, the fixing base 22 is prevented from rotating in the separation direction, and the presser claw 24 is prevented from separating upward from the end of the sleeper 18. can do. Thereby, it can prevent reliably that the edge part of the sleeper 18 floats.

  Further, as shown in FIG. 7, since the presser claw 24 is positioned right above the mounting portion 23 when viewed from the tube length direction A, the rotational moment M can be reduced, and thereby the receiving portion The load acting on 27 can be reduced, and deformation of the receiving portion 27 can be prevented.

  Further, as shown in FIG. 8, by turning both the bolts 23b and adjusting the protruding amount C from the nut 23a to the tip of the bolt 23b, the mounting position of the sleeper fixing device 21 can be adjusted with respect to the main beam 6. It can be moved in the tube length direction A. Thereby, the position of the presser claw 24 of the sleeper fixing device 21 with respect to the main beam 6 can be adjusted to the optimum position in the tube length direction A.

(Second Embodiment)
In the second embodiment, as shown in FIG. 10, two upper and lower presser claws 24 a and 24 b are provided on the base 22 a of the fixed base portion 22.

  According to this, when the sleeper 18 is installed on the main girder 6 at the bottom in the sheath pipe 1, as shown by the solid line in FIG. 10, when the height of the end of the sleeper 18 is low, the lower presser claw 24 a However, the end of the sleeper 18 can be fixed by pressing it from above. Further, as shown by the phantom line in FIG. 10, when the height of the end of the sleeper 18 is high, the upper presser claw 24 b can press and fix the end of the sleeper 18 from above. Thus, even when the height of the end portion of the sleeper 18 is different, the end portion of the sleeper 18 can be fixed to the main beam 6 using the sleeper fixing device 21.

In the second embodiment, the pressing claws 24a and 24b are provided in two upper and lower stages, but a plurality of upper and lower three or more stages may be provided.
(Third embodiment)
In the third embodiment, as shown in FIGS. 11 and 12, the base 22 a of the fixed base portion 22 in a state where the two press claws 24 a and 24 b are arranged at a predetermined interval in the tube length direction A. It is provided above.

According to this, since the two presser claws 24a and 24b press the end of the sleeper 18 from above, it is possible to prevent the sleeper 18 from tilting up and down in the pipe length direction A.
In the third embodiment, the two presser claws 24a and 24b are provided on the fixed base 22, but three or more presser claws may be provided at predetermined intervals in the tube length direction A. Good.

(Fourth embodiment)
In the first embodiment, as shown in FIG. 8, each of the pair of attachment portions 23 provided on the fixing base portion 22 includes a nut 23 a and a bolt 23 b. On the other hand, in the fourth embodiment described below, as shown in FIG. 13, any one of the pair of attachment portions 23 is the same as the first embodiment. It has a nut 23a and a bolt 23b, and the other mounting portion 23 has a fixing pin 35 (fixing member). The fixing pin 35 is provided on the other mounting plate 22b, and one bolt 23b and the other fixing pin 35 face each other in the tube length direction A on the same axis.

Hereinafter, the operation of the above configuration will be described.
The sleeper 18 is installed on the main girder 6 at the bottom of the sheath pipe line 1, the main girder 6 is inserted into the mounting space 25 of the fixing base 22 of the sleeper fixing device 21 from below, and the pedestal 22 a is inserted into the main girder 6. Install on top. Thereafter, the fixing base 22 is attached to the main girder 6 by tightening the one bolt 23 b and sandwiching the main girder 6 from both sides in the tube length direction A with the one bolt 23 b and the other fixing pin 35.

(Fifth embodiment)
In the fifth embodiment, as shown in FIG. 16, the main beams 6 of the adjacent segments 2 are connected by a plurality of sets of bolts 43a and nuts 43b (connectors). Among these, each bolt 43 a is inserted through a bolt hole 40 formed in the main beam 6.

  As shown in FIGS. 14 to 16, the sleeper fixing device 41 includes a fixing base part 42, an attachment part 43 for attaching the fixing base part 42 to the main girder 6, and a presser claw 44 (for pressing the end of the sleeper 18 from above. An example of a presser part).

  The fixed base part 42 is a square flat plate-like member and has a long hole 46 that is long in the circumferential direction B. The mounting portion 43 includes a bolt 43a (screw member) inserted through the bolt hole 40 of the main beam 6 and the long hole 46 of the fixing base portion 42, and a nut 43b screwed into the bolt 43a. Yes. Further, the presser claw 44 is provided on the fixed base portion 42.

  The fixed base part 42 has a receiving part 47 at the other end. The receiving portion 47 contacts the inner peripheral surface of the outer plate portion 5 of the segment 2 (an example of the inner side of the segment 2), and the presser claw 44 is detached upward from the end portion of the sleeper 18 around the bolt 43a. This is the part that receives the rotational moment M in the separation direction.

Hereinafter, the operation of the above configuration will be described.
As shown in FIGS. 15 and 16, the fixing base 42 is attached to the inner surface of the main girder 6, and the bolts 43 a are connected to the bolt holes 40 of the pair of main girder 6 and the long holes 46 of the fixing base 42. The sleeper fixing device 41 is attached to the main girder 6 by screwing the nut 43b into the bolt 43a and tightening. As shown in FIG. In order to hold down, the end of the sleeper 18 is fixed to the main beam 6.

  As described above, the sleeper fixing device 41 can be attached to the main beam 6 using the bolts 43a and nuts 43b that connect the main beams 6 of the adjacent segments 2, so that the main beams 6 can be connected to each other. The bolt 43a and the nut 43b can also be used as the bolt 43a and the nut 43b for attaching the sleeper fixing device 41. Thereby, the number of bolts 43a and nuts 43b can be reduced.

  In addition, with the bolts 43a and nuts 43b loosened, as shown in FIG. 14, the fixing base 42 can be slid and moved in the circumferential direction B along the long hole 46. Depending on the position, the position of the presser claw 44 can be adjusted in the circumferential direction B.

  Further, even if the fixed base 42 tries to rotate in the disengagement direction around the bolt 43 a due to vibration or the like when the carriage 13 travels on the rail 11, the receiving part 47 is not connected to the inner peripheral surface of the outer plate part 5. Since the rotation moment M in the detaching direction is received in contact with the sway, the rotation of the fixing base 42 in the detaching direction is prevented, and the presser claw 44 can be prevented from detaching upward from the end of the sleeper 18.

  In each of the above embodiments, as shown in FIGS. 2 and 3, the main girder 6 having the inner flange shape is provided at both ends of the segment 2, but in addition to the main girder 6, the outer flange projecting outward. May be provided. In this case, it is possible to connect the plurality of segments 2 by connecting the main beams 6 and connecting the outer flanges.

  In each of the above embodiments, a small-diameter tunnel is excavated using a small shield machine, but a large-diameter tunnel may be excavated using a large shield machine.

1 sheath pipe (pipe)
2 segment 6 main girder 12 rail 18 sleepers 21, 41 sleeper fixing devices 22, 42 fixing base parts 23, 43 mounting parts 23b bolts (screw members)
24, 44 Presser claw (presser part)
27, 47 Receiving part A Pipe length direction M Rotational moment

Claims (4)

The segment has an inner flange-shaped main girder,
By connecting the main girders in the pipe length direction, a plurality of segments are connected to form a pipe line,
A sleeper fixing device for fixing a sleeper provided on a main girder when laying rails in a pipeline,
The sleeper fixing device has a fixing base portion, an attachment portion for attaching the sleeper fixing device to the main girder, and a pressing portion for pressing the end portion of the sleeper from above.
The presser part is provided on the fixed base part.
The fixing base part has a receiving part that abuts on the inner side of the segment and receives a rotational moment in a separating direction in which the presser part is detached from the end part of the sleeper with the attachment part as a center. Fixing device. The mounting part is provided on the fixed base part, the main girder is sandwiched from both sides in the pipe length direction, and the fixed base part is attached to the main girder,
The sleeper fixing device according to claim 1, wherein the receiving portion abuts on the inner periphery of the main girder and receives the rotational moment. A pair of mounting portions are provided in the tube length direction,
The main girder is sandwiched between both mounting parts,
The sleeper fixing device according to claim 2, wherein at least one of the attachment portions has a screw member that can be fed and moved in the tube length direction. The sleeper fixing device according to any one of claims 1 to 3, wherein the presser portion is positioned immediately above the attachment portion when viewed from the tube length direction.

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