JP7228289B1 - center - Google Patents

Abstract

A center provided with a rail feeding device capable of feeding a rail in a desired direction with high efficiency while reducing the work involved in correcting the position of the rail. A center is provided with a rail feeding device (20). The rail feeder 20 is attached to the lower part of the center body 10 and moves the rail 501 in the X direction. The rail feeding device 20 has a pair of left and right wire sheep boxes 21, a lifting unit 22, and a pair of left and right rail moving units. The long frame 21 is provided so that a part thereof protrudes from the center body 10 in the X direction. The lifting unit 22 can lift the center body 10 so that the traveling wheels of the traveling carriage 14 are separated upward from the rails 501 . The rail moving unit 28 pulls the tip of the rail 501 toward the tip 21e of the wire sheep box 21 in a state in which the traveling wheels are separated from the rail. [Selection drawing] Fig. 3

Description

The present invention relates to a center, and more particularly to a center with a rail feeder for moving a rail longitudinally of a tunnel.

In the construction of tunnels, there are cases where concrete is placed on the walls of the tunnel using a center. The center is configured to move on rails laid on the roadbed surface of the tunnel. Laying rails over the entire length of the tunnel results in an increase in cost, so after concrete has been placed in a certain area, the rear rails are repeatedly moved forward.

Patent Literature 1 discloses a rail feeding device for feeding a center rail forward. The rail feeding device disclosed in Patent Document 1 is attached to a center body having a formwork for placing concrete, and includes a pair of rail gripping rollers capable of gripping the rail and an elevating device capable of lifting and lowering the center body. Prepare. In the rail feeding device disclosed in Patent Document 1, the rail is gripped from both sides in the width direction by a pair of rail gripping rollers, and in the gripped state, the center body is lifted together with the rail by an elevating device. As a result, the rail is separated from the road surface. Patent document 1 discloses that the rail is manually sent forward.

Japanese Patent Application Laid-Open No. 2020-37807

However, in the rail feeder disclosed in Patent Document 1, since the rail in the upwardly raised state together with the center body is manually fed out, a large amount of labor is required to move the rail. In addition, in the rail feeding device disclosed in Patent Document 1, a rail gripping roller is disposed in the lower part of the center body, and the rail gripped by the rail gripping roller is moved forward. However, it is difficult to accurately locate the tip position of the rail. That is, it is necessary to provide a gap between the rail gripping roller and the rail so that the rail can move in the longitudinal direction. is moved forward, the position of the tip of the rail may deviate from the desired position in the lateral direction of the tunnel. When the position of the tip of the rail deviates from the desired position in this way, the operator needs to correct the position using a crowbar or the like, which complicates the work.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and is a rail that enables the rail to be sent out in a desired direction with high efficiency while reducing the work involved in correcting the position of the rail. The object is to provide a center with a feeding device.

A center according to an aspect of the present invention includes a center body and a rail feeding device. The center body is capable of coming into contact with a formwork used when pouring concrete on the tunnel wall surface and a pair of left and right rails placed on the roadbed surface in a movable state, and is driven to rotate. and a traveling wheel capable of traveling on the pair of left and right rails . The rail feeding device is a device that is attached to the center body and moves the pair of left and right rails on the roadbed surface in the longitudinal direction of the tunnel.

In the center according to this aspect, the rail feeding device includes a pair of left and right long frames, an elevating unit, and a pair of left and right rail movement units. The pair of left and right long frames are provided so as to protrude from the center body toward at least one of the longitudinal directions of the tunnel. The elevating unit elevates the center body including the traveling wheels. When the elevating unit lowers the center body, the traveling wheels come into rotatable contact with the pair of left and right rails on the road surface, and the elevating unit raises the center body. In this state, the traveling wheels are separated upward from the pair of left and right rails on the roadbed surface.
The rail feeding device further has a pair of left and right rail moving units. Each of the pair of left and right rail moving units is configured so that the traveling wheels are separated upward from the pair of left and right rails on the roadbed surface by raising the center body by the elevating unit . A drive section is provided for pulling the tip portions of the upper pair of left and right rails toward the tip portions of the long frame.

In the center according to the above aspect, the rail moving unit has a driving section, and the leading end of the rail is pulled by the driving section when the rail is moved. Rail feeding is possible with high efficiency without requiring greater labor. Moreover, in the center according to the above aspect, it is possible to ensure a higher level of safety in the work than in the case of manually moving the rails.

In addition, in the center according to the above aspect, since the tip of the rail is pulled toward the tip of the long frame by the rail moving unit, the tip of the rail is pulled toward the tip of the long frame when moving the rail. be moved. Therefore, the rail is supported behind the rail (rear in the moving direction), and compared to the device disclosed in Patent Document 1, which has a configuration in which the tip portion of the rail is not restricted in the left-right direction, the device according to the above aspect. In the center it is possible to move the rails to precise positions. That is, in the device disclosed in Patent Document 1, the tip of the rail, which is not restricted in the lateral direction, sways laterally as the rail moves, making it difficult to move the rail in a desired direction. Therefore, in the center according to the above aspect, the tip of the rail is pulled toward the tip of the long frame. can be moved in any desired direction.

In the center according to the aspect described above, each of the rail moving units includes a wire rope having one end attached to the tip of the pair of left and right rails on the roadbed surface , and the drive section for sending out the wire rope. and a winch that can be wound up, and a sheep that is provided at each end of the long frame and on which the wire rope is hung . In a state in which the pair of left and right rails on the roadbed surface is spaced upward from the pair of left and right rails on the roadbed surface, the pair of left and right rails on the roadbed surface is wound with the winch to wind the wire rope, thereby moving the left and right rails on the roadbed surface. Each tip of a pair of rails may be pulled toward the sheep to move it in the longitudinal direction of the tunnel .

In the center according to the above aspect, the rail moving unit has the wire rope, the winch, and the sheep, and the rail can be moved by winding and pulling out the wire rope with the winch that is the driving part. Therefore, in the center according to the above aspect, the rail can be moved with a simple configuration, and both high workability and low device cost can be achieved compared to the case where the rail is moved manually or using heavy machinery. .

In the center according to the aspect described above, each of the long frames is provided so as to protrude toward both sides in the longitudinal direction of the tunnel, and the wire rope is a first wire rope, the winch is a first winch, and the winch is a first winch. When each of the sheep is referred to as a first sheep, each of the rail moving units is a second wire rope having one end attached to the other end of the pair of left and right rails on the roadbed surface opposite to the tip end. , a second winch capable of sending out and winding the second wire rope, and a second sheep provided at each other end of the long frame to which the second wire rope is hung. The first wire rope is wound by the first winch in a state in which the traveling wheels are spaced upward from the pair of left and right rails on the roadbed surface by raising the center body by the lifting unit. a first mode for moving each of the pair of left and right rails on the roadbed surface toward one of the longitudinal directions of the tunnel by sending out the second wire rope from the second winch; and the second wire rope is wound by the second winch so that each of the pair of left and right rails on the roadbed surface is set in the opposite direction to the one in the longitudinal direction of the tunnel. It may be possible to selectively execute one of the second mode of moving toward the other.

In the center according to the above aspect, the long frames are provided so as to protrude toward both sides of the center body, and one of the first mode and the second mode can be selectively executed. can be advanced or retracted, and high usability can be realized in tunnel construction.

In the center according to the aspect described above, each of the rail moving units includes a hanging frame that hangs downward from each tip end of the long frame, and a hanging frame that is arranged at the lower end of the hanging frame. and a set sheep, wherein the wire rope is routed from the winch via the sheep and the lower sheep to the tips of the pair of left and right rails on the roadbed surface . good too.

In the center according to the above aspect, since the rail moving unit has the hanging frame and the lower sheep, the separation distance in the vertical direction with respect to the roadbed surface in the portion between the lower sheep and the tip of the rail in the wire rope is reduced. It is possible to reduce the lift of the rail from the road surface when the rail is moved. Therefore, in the center according to the aspect described above, it is possible to suppress the rail from swaying vertically and horizontally when the rail is moved.

In the center according to the aspect described above, the rail feeding device is configured such that, in a state in which the traveling wheels are separated upward from the pair of left and right rails on the roadbed surface by raising the center body by the elevating unit, the further comprising a tip support unit for supporting each tip of the long frame between the road surface and the road surface, the tip support unit being provided at the lower end of the telescopic part that can extend and contract in the vertical direction, and a float contacting the roadbed surface in a state in which the expandable portion is extended.

In the center according to the above aspect, since the tip support unit is provided at the tip of the long frame, the tip of the long frame is supported by grounding the float of the tip support unit on the road surface when moving the rail. It is possible to suppress the occurrence of displacement in the vertical direction and the horizontal direction. Therefore, the center according to the above aspect can maintain the position of the distal end of the long frame at the desired position by having the distal end support unit, and is suitable for moving the rail to the desired position.

In the center according to the aspect described above, each of the long frames is arranged to enter below the center body, and the elevating unit moves the center body with respect to each of the long frames. In the lower area, it is composed of a first lifting unit and a second lifting unit spaced apart from each other in the longitudinal direction of the long frame, and the first lifting unit and the second lifting unit respectively comprises a jack capable of lifting and lowering the center body through the long frame, a float attached to the lower end of the jack and grounded on the road surface when the jack is in an extended state, and the long frame. in the lateral direction with respect to the center body, and the first lifting unit moves the tip of the second lifting unit and the long frame in the longitudinal direction of the long frame. and in a state in which the floats of the first lifting unit and the second lifting unit are grounded on the roadbed surface, the lateral feeding mechanism part of the first lifting unit is moved to the length By pressing the elongated frame in one of the left and right directions, the tip of the elongated frame may be rotated around a point where the float of the second elevating unit touches the road surface as a fulcrum.

In the center according to the above aspect, each of the first lifting unit and the second lifting unit has a lateral feeding mechanism, and the float of one of the lifting units moves the tip of the long frame around the fulcrum where the float touches the road surface. Since it can be rotated, it can also be used for curved tunnels. Therefore, in the center according to the above aspect, the rail can be moved in accordance with the traveling direction of the center without greatly correcting the position of the leading end of the rail by hand or heavy machinery.

In the center according to the above aspect, each of the first lifting unit and the second lifting unit is provided on the float of the lifting unit, and when the pair of left and right rails on the roadbed surface moves, A lateral direction guide roller may be further provided for restricting lateral deflection of the pair of left and right rails.

In the center according to the above aspect, since the float of the lifting unit is provided with the lateral guide roller, it is possible to prevent the rail from undesirably colliding with the center body, the rail feeder, etc. when the rail moves.

In the center according to each aspect described above, it is possible to send out the rail in a desired direction with high efficiency while reducing the work involved in correcting the position of the rail.

It is a front view (partial cross section view) which shows the structure of the center which concerns on embodiment. It is a side view (partial cross section view) which shows the structure of a center. It is a side view which expands and shows the A section of FIG. It is a side view which expands and shows the B section of FIG. It is a top view which shows the structure of a center. (a) is a side view showing the configuration of a traveling carriage, and (b) is a front view showing the configuration of an elevating unit. (a) is a front view showing a state in which the float of the lifting unit is separated from the roadbed surface, (b) is a front view showing the state in which the float of the lifting unit is in contact with the roadbed surface, and (c) is a traveling carriage. (d) is a front view showing a state in which the traveling wheels of the traveling truck are separated from the rails. It is process drawing which shows the rail movement method of a rail. FIG. 10 is a schematic diagram showing the relationship between the sheep and the rail when the rail is moved; (a) is a side view showing the configuration of a connection jig attached to the tip of a rail, and (b) is a side view showing the configuration of a connection jig according to Modification 1. FIG. FIG. 12 is a side view showing the configuration of the tip portion of the wire sheep box of the rail feeder according to Modification 2; FIG. 11 is a front view showing the configuration of the tip portion of the rail feeder according to Modification 3, in which (a) is a state in which the float of the tip support unit is in contact with the roadbed surface, and (b) is the float of the tip support unit when the float is in contact with the roadbed surface; , respectively.

EMBODIMENT OF THE INVENTION Below, embodiment of this invention is described, considering drawing into consideration. In addition, the form described below is an example of the present invention, and the present invention is not limited to the following forms except for its essential configuration.

In the drawings used in the following description, the X direction indicates the "longitudinal direction of the tunnel," the Y direction indicates the "left and right direction (width direction) of the tunnel," and the Z direction indicates the "vertical direction of the tunnel."

[Embodiment]
1. Configuration of Center 1 A configuration of a center 1 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 6. FIG.

The center 1 includes a center body 10 and a rail feeding device 20. - 特許庁The center body 10 includes a frame 11, a plurality of forms 12, a plurality of actuators 13, four traveling carriages 14 and 15 (only two traveling carriages 14 and 15 are shown in FIGS. 2 and 4), have

As shown in FIG. 1, the frame 11 is formed by joining a horizontal frame portion 11b and a pair of left and right vertical frame portions 11c, and has a portal shape as a whole when viewed from the front. The frame 11 has a space portion 11a below the horizontal frame portions 11b and between the vertical frame portions 11c. The space 11a is a portion through which workers, vehicles, and the like can pass.

The formwork 12 has almost no gap between them due to the extension of the actuator 13, and has an arch shape as a whole when viewed from the front. The formwork 12 is a part used when pouring concrete into the tunnel wall surface.

The traveling carriages 14 and 15 are joined to the lower end of the vertical frame portion 11c. As shown in FIGS. 2 and 4, the traveling carriages 14 and 15 are arranged below the area where the formwork 12 is arranged. The traveling carriage 14 is arranged on the +X side with a space from the traveling carriage 15 . As shown in FIGS. 4 and 6A, the traveling carriage 14 has traveling wheels 14a, traveling motors 14b, guide rollers 14c, and roller chains 14d. The traveling carriage 15 also has the same configuration.

Rotational driving force generated by the traveling motor 14b is transmitted to the traveling wheels 14a via the roller chains 14d, and the traveling wheels 14a are rotationally driven on the rails 501. As shown in FIG. As a result, the center 1 can travel along the rails 501 laid on the road surface 500 . In FIGS. 4 and 6A, the traveling wheels 14a are shown separated upward from the rails 501. However, when the jacks of the lifting devices 22 and 23, which will be described later, are contracted, the traveling carriage 14 can be moved. By bringing the traveling wheels 14a and the traveling wheels of the traveling truck 15 into contact with the rails 501, the center 1 can travel.

The rail feeding device 20 includes a pair of left and right wire sheep boxes (long frames) 21, four lifting units 22 and 23 (only two lifting units 22 and 23 are shown in FIGS. 2 and 4), and four and a rail movement unit 28 . As shown in FIG. 5, a pair of wire sheep boxes 21 are provided in the Y direction (horizontal direction) above a rail 501 laid on a road surface 500. intrudes below the center body 10, and is provided so as to partially protrude on both the +X side and the -X side.

As shown in FIGS. 2 and 5, the wire sheep box 21 includes a first box portion 21a projecting from the bottom of the center body 10 to the +X side, a second box portion 21b projecting to the -X side, and a bottom of the center body 10. A connecting portion 21c that connects the first box portion 21a and the second box portion 21b is integrally formed.

The four elevating units 22 and 23 are arranged in pairs on the left and right sides corresponding to the rails 501 laid on the road surface 500, and have the same configuration. As shown in FIG. 2, the four lifting units 22 and 23 are arranged below the center body 10. As shown in FIG. As shown in FIGS. 2 and 4, the lifting unit 22 is disposed between the first box portion 21a of the wire sheep box 21 and the traveling carriage 14 in the X direction, and the lifting unit 23 is positioned between the wire sheep box 21. It is arranged between the second box portion 21 b and the traveling carriage 15 .

As shown in FIGS. 4 and 6B, the lifting unit 22 has a jack 22a, a float 22b, a lateral feed mechanism 22c, a lateral feed motor 22d, and lateral guide rollers 22e.

The upper end of the jack 22a is joined to the connecting portion 21c of the wire sheep box 21, and can be expanded and contracted in the Z direction (arrow C1 in FIG. 4). As shown in FIG. 6B, the float 22b is provided so as to straddle the rail 501 laid on the road surface 500 in the Y direction. The lower surface of the float 22b contacts the roadbed surface 500 when the jack 22a is in an extended state (jacked up state), and the lower surface is separated from the roadbed surface 500 when the jack 22a is in a contracted state (jacked down state). do. When the float 22b is separated upward from the roadbed surface 500, the traveling wheels 14a of the traveling truck 14 and the traveling wheels of the traveling truck 15 are in contact with the rails 501, respectively.

The traverse mechanism 22c receives the driving force of the traverse motor 22d, and can press the parts of the wire sheep books 21 directly above the lifting units 22 and 23 in the Y direction via jacks 22a and 23a (FIG. 6). Arrows E1, E2 in (b)). As shown in FIG. 5 , the lifting unit 22 is arranged on the +X side of the lifting unit 23 . Thus, for example, when the lateral feeding mechanism portion of the lifting unit 23 is stopped and the lateral feeding mechanism portion 22c of the lifting unit 22 is driven, the wire sheep box 21 rotates about the lifting unit 23 as a fulcrum. do. As a result, the widths of the lateral deflections D3 and D4 of the tip portion 21e on the +X side of the wire sheep box 21 become larger than the widths of the lateral deflections D5 and D6 of the tip portion 21f on the -X side. Conversely, when the lateral feeding mechanism 22c of the lifting unit 22 is stopped and the lateral feeding mechanism of the lifting unit 23 is driven, the wire sheep box 21 rotates about the lifting unit 22 as a fulcrum. As a result, the widths of the lateral deflections D5 and D6 of the tip portion 21f on the -X side of the wire sheep box 21 become larger than the widths of the lateral deflections D3 and D4 of the tip portion 21e on the +X side.

Whether to drive the lateral feed mechanism 22c of the lifting unit 22 or to drive the lateral feeding mechanism of the lifting unit 23 can be selected in relation to the traveling directions D1 and D2 of the center 1. FIG. For example, when the direction of travel is the direction of arrow D1, the lateral feed mechanism 22c of the lifting unit 22 is driven to increase the width of lateral swing of the tip portion 21e of the wire sheep box 21, and the direction of travel is the direction of arrow D2. If the wire sheep box 21 is oriented in this direction, the transverse feeding mechanism of the lifting unit 23 can be driven to increase the lateral swing width of the tip 21f on the opposite side of the wire sheep box 21 .

Returning to FIG. 6B, the float 22b in the lifting unit 22 is provided with a lateral guide roller 22e on the side facing the rail 501. As shown in FIG. The horizontal guide roller 22e is rotatable around the rotation axis Ax1, and is a roller for controlling the deflection of the rail 501 even when the rail 501 swings in the Y direction during movement of the rail 501, which will be described later.

The lift unit 23 also has the same structure as the lift unit 22, and the jack can be extended and contracted as indicated by an arrow C2.

As shown in FIG. 3, in the wire sheep box 21, a winch 24, a sheep 26, and a wire rope 25 hung on the sheep 26 are arranged in each of the first box portion 21a and the second box portion 21b. It is Although only the first box portion 21a of the wire sheep box 21 is shown in FIG. 3, the second box portion 21b is also provided with a similar configuration.

In the rail feeder 20 , the winch 24 , the sheep 26 and the wire rope 25 constitute a rail moving unit 28 . The winch 24 is provided as a driving portion for moving the rail 501, and is arranged at the root portion (inner portion 21d) of each of the first box portion 21a and the second box portion 21b. On the other hand, the sheep 26 are arranged at the tip portions 21e and 21f of the first box portion 21a and the second box portion 21b, respectively.

The wire rope 25 is sent out and wound up by a winch 24 . A wire rope 25 is routed downward from the wire sheep box 21 via a sheep 26 from a winch 24 . The end of the wire rope 25 is attached to the tip of the rail 501 via the connecting jig 27 . In the center 1 according to the present embodiment, the wire rope 25 and the rail 501 are connected via the connection jig 27, but the wire rope 25 and the rail 501 are connected via the connection jig 27. is not required.

2. Up-and-down states of the lifting units 22 and 23 and the positional relationship between the traveling wheels 14a and the rails 501 Regarding the lifting states of the lifting and lowering units 22 and 23 and the positional relationships between the traveling wheels 14a of the traveling truck 14 and the traveling wheels of the traveling truck 15 and the rails 501 , will be described with reference to FIG. In FIG. 7, the lifting unit 22 and the traveling truck 14 are illustrated, and the drawing of the lifting unit 23 and the traveling truck 15 is omitted. The positional relationship of is also the same as in the following description.

As shown in FIG. 7( a ), when the jack 22 a of the lifting unit 22 is in a contracted state (jacked down), the float 22 b is separated upward from the roadbed surface 500 . In this state, as shown in FIG. 7C, the entire frame 11 including the vertical frame portion 11c is lowered downward (-Z side) (arrow F2). In the state shown in FIG. 7(c), the traveling wheels 14a of the traveling carriage 14 are in contact with the rails 501. By driving the running motor 14b, the center 1 can be moved in the X direction.

As shown in FIG. 7B, when the jack 22a of the lifting unit 22 is extended (jacked up) (arrow F1), the float 22b is in contact with the road surface 500. As shown in FIG. In this state, there is a gap G between the lifting unit 22 and the rail 501, and the horizontal guide roller 22e provided on the float 22b and the rail 501 are separated in the Y direction. When the jack 22a of the lifting unit 22 is extended, as shown in FIG. 7D, the entire frame 11 including the vertical frame portion 11c is lifted upward (+Z side) (arrow F3 ). Therefore, in the state shown in FIG. 7(d), a gap G2 is formed between the traveling wheel 14a of the traveling carriage 14 and the rail 501, and the rail 501 can be moved.

7C and 7D, the guide roller 14c of the traveling carriage 14 and the guide roller of the traveling carriage 15 are in contact with the rail 501. As shown in FIG.

3. Feeding Procedure of Rail 501 and Movement of Center 1 The feeding procedure of the rail 501 laid on the road surface 500 and the movement of the center 1 will be described with reference to FIGS. 7 to 9. FIG. In the following description, it is assumed that the rail 501 is sent toward the +X side and then the center 1 is moved toward the +X side.

First, when moving the rail 501 in the longitudinal direction (X direction) of the tunnel, the jack 22a of the lifting unit 22 and the jack of the lifting unit 23 are extended as described with reference to FIG. 7B. . That is, the vehicle is jacked up (step S1). As a result, the float 22b of the lifting unit 22 and the float of the lifting unit 23 are grounded on the road surface 500, and as described with reference to FIG. The wheels are spaced upward from rail 501 . As described above, the guide rollers 14c of the traveling carriage 14 and the guide rollers of the traveling carriage 15 are kept in contact with the rails 501 even in this state.

Next, it is determined whether or not the trajectory of the center 1 needs to be changed because the tunnel is curved or the like (step S2). If it is determined that the trajectory of the center 1 needs to be changed (step S2: YES), the lateral feed motor 22d of the lifting unit 22 is driven to move the tip of the wire sheep box 21 by the lateral feed mechanism 22c. 21e is rotated in a desired direction and amplitude (step S3). In this case, the lateral feed motor of the lifting unit 23 is not driven.

On the other hand, if it is determined in step S2 that the trajectory of Centaur 1 does not need to be changed (step S2: NO), step S3 is not executed.

Next, the winch 24 provided in the first box portion 21a of the wire sheep box 21 is driven to wind the wire rope 25 and move the rail 501 in the +X direction (step S4). That is, as shown in FIG. 9, by winding the wire rope 25 with the winch 24 provided in the first box portion 21a, the tip portion 501a of the rail 501 is moved to the first box portion 21a as indicated by the arrow H. 21a is pulled toward a sheep 26 disposed at the tip 21e. At this time, since the guide rollers 14 c of the traveling truck 14 and the guide rollers of the traveling truck 15 are in contact with the rails 501 , the guide rollers 14 c of the traveling truck 14 and the guide rollers of the traveling truck 15 are in contact with the rails 501 . act as a guide.

The wire rope is set so as to be sent out without slack from the winch arranged in the second box portion 21b of the wire sheep box 21 .

Next, after moving the rail 501 to a desired position, the jacks 22a of the lifting unit 22 and the jacks of the lifting unit 23 are contracted as described with reference to FIG. 7(a). That is, it is jacked down (step S5). As a result, the float 22b of the lifting unit 22 and the float of the lifting unit 23 are separated upward from the road surface 500, and as described with reference to FIG. The running wheels come into contact with the rails 501 .

Finally, the traveling motor 14b of the traveling truck 14 and the traveling motor of the traveling truck 15 are driven to move the center 1 along the rail 501 toward the +X side (step S6).

4. Configuration of Connection Jig 27 The configuration of the connection jig 27 will be described with reference to FIG.

As shown in FIG. 10A, the connection jig 27 is formed by joining a rail connection portion 27a, a wire connection portion 27b, and a slope portion 27e to each other. The rail connecting portion 27a has a hole 27c through which a bolt can be inserted, and the wire connecting portion 27b has a hole 27d through which a U-shaped hook or the like for attaching the wire rope 25 can be inserted. The slope portion 27e is made of a plate-shaped steel material or the like, and forms a slope that gradually becomes the +Z side from the -X side toward the +X side (in the direction away from the tip portion 501a of the rail 501).

In the center 1 according to the present embodiment, by using the connection jig 27 as shown in FIG. It is possible to prevent the portion 501a from digging into the roadbed surface 500, which is effective in restraining the rail 501 from moving wildly.

5. Effect In the center 1 according to the present embodiment, the rail moving unit 28 has the winch 24, and when the rail 501 is moved, the winch 24 moves the tip 501a of the rail 501 toward the tip 21e of the wire sheep box 21. Since it is pulled, it is possible to move the rail 501 with less effort than the device disclosed in the above-mentioned Patent Document 1, which moves the rail 501 manually. In addition, in the center 1, since the rail feeder 20 is attached to the center body 10, it is possible to ensure a high level of work safety compared to the case where the rail is moved manually or by heavy machinery.

In addition, in the center 1, the rail moving unit 28 of the rail feeder 20 can pull the tip 501a of the rail 501 toward the tips 21e and 21f of the wire sheep box 21, so that the rail 501 can be moved in any desired direction. direction can be set. Therefore, compared to the apparatus disclosed in the above-mentioned Patent Document 1, in which the tip of the rail may be swung left and right when the rail moves as described above, in the center 1 according to the present embodiment, the tip of the rail 501 Since the rail 501a is pulled toward the tips 21e and 21f of the wire sheep box 21, if the tips 21e and 21f of the wire sheep box 21 are aligned in the direction in which the rail 501 is to be moved, the rail 501 can be moved accurately. can be moved to any position.

In the center 1, the guide rollers 14c of the traveling carriage 14 and the guide rollers of the traveling carriage 15 are configured to contact the rail 501 even when the rail 501 is moving. By suppressing , the direction of movement can be held more accurately.

In the center 1, a rail moving unit 28 is composed of a wire rope 25, a winch 24 and a sheep 26, and the rail 501 can be moved by winding or pulling out the wire rope 25 with the winch 24.例文帳に追加Therefore, in the center 1, the rail 501 can be moved with a simple configuration, and both high workability and low device cost can be achieved compared to moving the rail 501 manually or using heavy machinery.

In addition, in the center 1, the wire sheep box 21 is provided so as to protrude from the center body 20 toward both sides in the X direction. Since it is possible to selectively move the rail 501 to the -X side and retract the center 1 to the -X side, it is possible to realize high usability in tunnel construction.

Further, in the center 1, the lifting unit 22 has a lateral feeding mechanism portion 22c and the lifting unit 23 also has a lateral feeding mechanism portion, and the float of one of the lifting units (the float 22b of the lifting unit 22 or the float of the lifting unit 23) Since the tip portions 21e and 21f of the wire sheep box 21 can be rotated around the point where the wire sheep box 21 touches the road surface 500 as a fulcrum, it is possible to correspond to a curved tunnel or the like. Therefore, in the center 1, the rail 501 can be moved in accordance with the traveling direction of the center 1 without greatly correcting the position of the tip portion 501a of the rail 501 manually or by heavy machinery.

In addition, in the center 1, the float 22b of the lifting unit 22 and the float of the lifting unit 23 are each provided with a horizontal guide roller (only the horizontal guide roller 22e is shown in FIG. 6B). When the rail 501 moves, it is possible to prevent the rail 501 from undesirably colliding with the rail feeding device 20 or the like.

As described above, in the center 1 according to the present embodiment, it is possible to send out the rail 501 in a desired direction with high efficiency while reducing the work involved in correcting the position of the rail 501 .

[Modification 1]
The connection jig 37 provided in the center according to Modification 1 will be described with reference to FIG. 10(b). The center according to this modified example has the same configuration as the center 1 according to the above-described embodiment, except for the configuration of the connecting jig 37 interposed between the rail 501 and the wire rope 25 .

As shown in FIG. 10(b), the connection jig 37 is formed to have an extension portion 37f in addition to the rail connection portion 37a, the wire connection portion 37b, and the slope portion 37e. The rail connecting portion 37a has a hole 37c through which a bolt can be inserted, and the wire connecting portion 37b has a hole 37d through which a U-shaped hook or the like for attaching the wire rope 25 can be inserted. The hole 37d is provided at a location between the tip portion 501a of the rail 501 and the slope portion 37e in the X direction.

When using the connection jig 37 as described above, when the rail 501 is pulled to the +X side by the wire rope 25 as indicated by the arrow I2, the slope portion 37e is arranged on the +X side of the hole 37d. As a result, the tip of the slope portion 37e (the tip on the +X side) is spaced upward from the roadbed surface 500 relative to the attachment point (hole 37d) of the wire rope 25, thereby further effectively preventing the roadbed surface 500 from digging into the roadbed surface 500. can be suppressed.

It should be noted that the center according to this modified example can also achieve the same effects as the center 1 according to the above-described embodiment.

[Modification 2]
A center rail feeding device 40 according to Modification 2 will be described with reference to FIG. 11 . The centerpiece according to this modification has the same configuration as the centerpiece 1 according to the above-described embodiment, except for the configuration of the tip portion 21e of the wire sheep box 21. As shown in FIG.

As shown in FIG. 11, the center rail feeding device 40 according to the present modification includes a sheep supporting portion (suspended frame) 41 and a sheep ( It further has a lower arrangement sheep) 42. The sheep support portion 41 is formed so as to hang down from below the tip portion 21 e of the wire sheep box 21 . The sheep 42 is arranged at the lower end portion of the sheep support portion 41 .

In this modification, the wire rope 25 is routed through the sheep 26 and the sheep 42 . Therefore, in this modification, compared to the path 25 b of the wire rope 25 below the wire sheep box 21 when the sheep support portion 41 and the sheep 42 are not provided, Pass through the route 25a.

In the center according to this modified example, the rail feeding device 40 further has the sheep support part 41 and the sheep 42, so that the wire rope 25 between the sheep 42 and the leading end 501a of the rail 501 moves up and down with respect to the roadbed surface 500. The separation distance in the direction can be reduced, and the lifting of the rail 501 from the roadbed surface 500 can be suppressed when the rail 501 is moved. Therefore, in the center according to this modified example, it is possible to suppress the rail 501 from moving up, down, left, and right when the rail 501 moves.

It should be noted that the center according to this modified example can also achieve the same effects as the center 1 according to the above-described embodiment.

[Modification 3]
A center rail feeding device 50 according to Modification 3 will be described with reference to FIG. 12 . The centerpiece according to this modification has the same configuration as the centerpiece 1 according to the above-described embodiment, except for the configuration of the tip portion 21e of the wire sheep box 21. As shown in FIG.

As shown in FIGS. 12(a) and 12(b), the center rail feeding device 50 according to this modified example includes a leading end support unit 51 in addition to the configuration provided in the center rail feeding device 20 according to the above-described embodiment. further has The tip support unit 51 is attached to both sides of the tip part 21e of the wire sheep box 21 in the Y direction.

The distal end support unit 51 is configured such that an extendable portion 51a can extend and retract as indicated by arrows J1 and J3. As indicated by an arrow J1, the float 51b provided at the lower end of the elastic portion 51a is in contact with the roadbed surface 500 when the elastic portion 51a is extended. When the float 51b is in contact with the roadbed surface 500, even if the tip 21e of the wire sheep box 21 swings in the Y direction as indicated by the arrow J2 when the rail 501 moves, the ground resistance of the float 51b against the roadbed surface 500 causes Shaking is suppressed.

When the tip 21e of the wire sheep box 21 is swung in the Y direction or when the center is moved along the rail 501, the float 51b is moved upward away from the road surface 500 as shown in FIG. 12(b). Keep

Although FIG. 12 shows only the tip 21e of the wire sheep box 21, the other tip 21f of the wire sheep box 21 is also provided with a tip support unit 51 having the same configuration.

In the center according to this modified example, since the leading end support units 51 are attached to the leading end portions 21e and 21f of the wire sheep box 21, the positions of the leading end portions 21e and 21f (positions in the Y direction) are adjusted when the rail 501 is moved. A desired position can be maintained, and it is further suitable for moving the rail 501 to a desired position.

It should be noted that the center according to this modified example can also achieve the same effects as the center 1 according to the above-described embodiment.

[Other Modifications]
In the above-described embodiment, the wire sheath box 21 protrudes from both sides of the center body 10 in the X direction. The sheepbox should stick out.

In addition, in the above-described embodiment and the like, the wire sheep box 21 having a box shape is adopted as an example of the long frame, but the present invention can be applied to a cylindrical body such as a square tube shape or a round tube shape, a square bar, a round bar, or the like. It is also possible to adopt a rod body of

Further, in the above embodiment, the rail moving unit 28 composed of the winch 24, the wire rope 25 and the sheep 26 is adopted, but the present invention can also adopt a rail moving unit having a rack and pinion mechanism. be.

In the above-described embodiment, the traveling wheels 14a of the traveling carriage 14 and the traveling wheels of the traveling carriage 15 are arranged in the inner portion 21d of the first box portion 21a in a state in which the traveling wheels 14a of the traveling carriage 14 and the traveling wheels of the traveling carriage 15 are separated upward from the rails 501 by the lifting units 22 and 23. The wire rope 25 is wound by the winch 24, and the wire rope is sent out from the winch arranged inside the second box portion 21b to move each of the rails 501 toward the +X side (the second 1 mode), conversely, the wire rope 25 is sent out from the winch 24 arranged in the inner part 21d of the first box part 21a, and the wire rope is wound by the winch arranged in the inner part of the second box part 21b. , it is also possible to move each of the rails 501 toward the -X side (second mode).

1 Center 10 Center Main Body 14, 15 Travel Cart 14a Travel Wheel 14c Guide Roller 20, 40, 50 Rail Feeding Device 21 Wire Sheep Box 21a, 21f Tip Part 22, 23 Lifting Unit 22a Jack 22c Lateral Feeding Mechanism Section 24 Winch 25 Wire Rope 26, 42 sheep 27, 37 connection jig 27e, 37e slope portion 28 rail movement unit 51 tip support unit 500 roadbed surface 501 rail

Claims (7)

A formwork used when pouring concrete into a tunnel wall surface, and a pair of left and right rails placed on a road surface in a movable state and capable of coming into contact with the pair of left and right rails by rotational driving. a center body having a traveling wheel capable of traveling thereon ;
a rail feeding device attached to the center body for moving the pair of left and right rails on the roadbed surface in the longitudinal direction of the tunnel;
with
The rail feeder is
a pair of left and right long frames protruding from the center body in at least one direction in the longitudinal direction of the tunnel;
an elevating unit for elevating the center body including the traveling wheels ;
has
When the lifting unit lowers the center body, the traveling wheels are rotatably in contact with the pair of left and right rails on the roadbed surface,
When the lifting unit lifts the center body, the traveling wheels are separated upward from the pair of left and right rails on the roadbed surface,
The rail feeding device moves the pair of left and right rails on the roadbed surface in a state in which the traveling wheels are separated upward from the pair of left and right rails on the roadbed surface by raising the center body by the elevating unit. further comprising a pair of left and right rail movement units each having a drive unit for pulling each tip of the rail toward each tip of the long frame,
Center. In the center according to claim 1,
Each of the rail moving units includes:
a wire rope having one end attached to the tip of the pair of left and right rails on the road surface ;
a winch, which is the driving unit and capable of feeding and winding the wire rope;
a sheep provided at each end of the long frame to which the wire rope is hooked; and a sheep that the traveling wheel moves to the pair of left and right rails on the roadbed surface by raising the center body by the elevating unit. In a state in which the pair of left and right rails on the roadbed surface are spaced upward from each other, the pair of left and right rails on the roadbed surface winds the wire rope by the winch, so that each end portion of the pair of left and right rails on the roadbed surface becomes the sheep. moved longitudinally of the tunnel by being pulled toward
Center. In the center according to claim 2,
each of the long frames is provided to protrude toward both sides in the longitudinal direction of the tunnel,
When the wire rope is a first wire rope, the winch is a first winch, and the sheep is a first sheep,
Each of the rail moving units includes:
a second wire rope having one end attached to the other end of the pair of left and right rails on the roadbed surface opposite to the tip end;
a second winch capable of feeding and winding the second wire rope;
a second sheep provided at each other end of the long frame and to which the second wire rope is hung;
further having
In a state in which the traveling wheels are separated upward from the pair of left and right rails on the roadbed surface by raising the center body by the lifting unit, the first wire rope is wound by the first winch. a first mode in which each of the pair of left and right rails on the roadbed surface is moved toward one of the longitudinal directions of the tunnel by sending out the second wire rope from the second winch; By sending out the first wire rope and winding the second wire rope with the second winch, each of the pair of left and right rails on the roadbed surface is moved to the other in the longitudinal direction of the tunnel opposite to the one in the longitudinal direction of the tunnel. a second mode of moving toward
Center. In the center according to claim 2 or claim 3,
Each of the rail moving units includes:
a hanging frame provided to hang downward from each tip of the long frame;
a lower sheep disposed at the lower end of the hanging frame;
further having
The wire rope is routed from the winch to the tip of the pair of left and right rails on the roadbed surface via the sheep and the lower sheep.
Center. In the center according to any one of claims 1 to 4,
The rail feeder is configured such that the lifting unit lifts the center body so that the running wheels are separated upward from the pair of left and right rails on the roadbed surface , and the front end portions of the elongated frames are moved. further comprising a tip support unit that supports between the roadbed surface and
The tip support unit has an extendable part that can be extended and retracted in the vertical direction, and a float that is provided at the lower end of the extendable part and contacts the roadbed surface in a state in which the extendable part is extended.
Center. In the center according to any one of claims 1 to 5,
Each of the long frames is arranged to enter below the center body,
The elevating units include a first elevating unit and a second elevating unit that are spaced apart from each other in the longitudinal direction of the elongated frame in a region below the center body with respect to each of the elongated frames. is composed of
Each of the first elevating unit and the second elevating unit includes a jack capable of elevating the center body via the long frame, and attached to the lower end of the jack, when the jack is in an extended state. a float contacting the roadbed surface; and a transverse feeding mechanism for moving the long frame in the horizontal direction with respect to the center body;
The first elevating unit is disposed between the second elevating unit and a distal end portion of the long frame in the longitudinal direction of the long frame,
In a state in which the floats of the first lifting unit and the second lifting unit are grounded on the roadbed surface, the lateral feeding mechanism part of the first lifting unit directs the long frame to one of the left and right directions. By pressing, the float of the second elevating unit rotates the tip of the long frame around a point where the float touches the roadbed surface as a fulcrum.
Center. In the center according to claim 6,
Each of the first elevating unit and the second elevating unit is provided on the float of the elevating unit, and moves the pair of left and right rails on the roadbed surface in the horizontal direction of the pair of left and right rails on the roadbed surface when the pair of left and right rails moves. It further has a lateral guide roller that regulates the deflection to
Center.

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