JP4827759B2 - Horizontal moving carriage of propulsion pipe in starting shaft - Google Patents

Description

  The present invention relates to a lateral movement carriage of a propulsion pipe in a start shaft for laterally moving from a lateral pulling portion provided adjacent to a start portion on a planned route of a tunnel to a start portion and installing the propulsion pipe on the planned route About.

  A number of propulsion pipes connected in the ground by thrusting the shield propulsion machine and the propulsion pipe into the ground using a propulsion jack installed in the start shaft while sequentially connecting the propulsion pipes from the rear of the shield propulsion machine In the propulsion method for forming a tunnel composed of, for example, when a tunnel is formed directly under a road while ensuring the passage of vehicles, the opening of the start shaft cannot be provided on the planned route. For this reason, as shown in FIG. 1, for example, the portion directly above the start portion 51 of the start shaft 50 located on the planned route L is covered with a large number of lining plates 53 arranged vertically and horizontally to allow the vehicle to pass. The lateral pulling portion 52 is provided at a position off the road adjacent to the starting portion 51, and the upper portion of the lateral pulling portion 52 serves as an opening, and the propulsion pipe is passed through the opening of the lateral pulling portion 52. 11 and other equipment have been devised so that they can be carried into the start shaft 50.

Further, the propulsion pipe 11 carried into the start shaft 50 using a crane or other lifting machine is moved laterally to the start portion 51 on the planned route L through the opening of the horizontal pulling portion 52 and then pushed into the ground. Need to be included. For this reason, various techniques for efficiently moving the propelling pipe 11 from the lateral pulling portion 52 to the starting portion 51 have been proposed (see, for example, Patent Document 1).
JP 2002-4779 A

  The propulsion pipe moved laterally from the horizontal pulling section to the start section is placed in front of the propulsion jack and push wheel on the planned route, and is aligned with the rear end of the preceding propulsion pipe that has been propelled underground. After joining, the propulsion jack will be extended and pushed into the ground, but the preceding propulsion pipe is affected by the attitude control of the shield propeller located at the head of the row of propulsion pipes and the state of the surrounding ground For example, the position may gradually shift in the process of being pushed into the ground by the propulsion jack. When such misalignment occurs, after the propulsion process for one propulsion pipe is completed, connect the next propulsion pipe to, for example, the rear end of the preceding propulsion pipe that has been pushed into the ground partway from the starting pit. Then, when pushing again with the propulsion jack, the alignment is not performed well, and much work is required for the joining work.

  In other words, when it is possible to provide a shaft opening above the planned route, it is possible to finely adjust the position in the height direction and the lateral direction by operating a lifting machine such as a crane. In the propulsion work where the upper part of the starting part arranged on the planned route is closed by a lining plate etc., and it is necessary to move the lateral part from the lateral pulling part to the starting part and install the propelling pipe on the planned line, Because it is impossible to perform alignment using a crane or other heavy lifting machine, it is difficult to make fine adjustments to the installation position.For example, even if a portable jack or the like is used, it takes a lot of work. It was.

  The present invention has been made paying attention to such a technical problem, and when the propulsion pipe moved laterally from the lateral pulling portion to the starting portion is installed on the planned route, the height of the propulsion pipe is reduced by a simple operation. It is possible to finely adjust the direction and lateral position, and easily place the subsequent propulsion pipe at the rear end of the preceding propulsion pipe propelled in the ground without much trouble. An object of the present invention is to provide a laterally moving carriage of a propulsion pipe in a start shaft that can be joined together.

In the present invention, a propulsion pipe is laterally moved from the lateral pulling portion provided adjacent to the starting portion on the planned route of the tunnel to the starting portion and installed on the planned route, and is propelled into the ground in advance. A lateral movement carriage of a propulsion pipe in a start shaft including a position adjusting mechanism for aligning the propulsion pipe with a rear end portion of a preceding propulsion pipe, wherein the lateral movement carriage is perpendicular to a propulsion direction of the propulsion pipe or The traverser device is configured together with the guide track by moving along a guide track laid across the starting portion and the lateral pulling portion so as to intersect a substantially vertical direction, and the position adjusting mechanism Are arranged on both sides of a center line along the propulsion direction of the mounting frame portion on which the propulsion pipe is placed, at a portion on the front side in the propulsion direction of the laterally moving carriage, and the tip ends of the propulsion pipe A pair of telescopic jaws that contact the outer peripheral surface of the Consists Tsu key, the pair of telescopic jack is installed so as to expand and contract in the diagonal direction inclined to the central line side upward, before described置架base part is in parallel at predetermined intervals The propulsion pipe is supported in a state where the arcuate portion of the outer peripheral surface of the propulsion pipe is dropped into the recess between the pair of pedestals, and the pair of telescopic jacks The above object is achieved by providing a laterally moving carriage for a propulsion pipe in a start shaft that is installed at an inner base end and expands and contracts in an oblique direction .

  Here, the center line along the propulsion direction of the mounting frame portion on which the propulsion pipe is mounted passes through the central axis of the mounted propulsion tube when the propulsion tube is mounted on the mounting frame portion. It is a line segment extending along the vertical plane.

  In the lateral movement carriage of the propulsion pipe in the start shaft of the present invention, it is preferable that the pair of telescopic jacks are installed at symmetrical positions across the center line along the propulsion direction of the mounting base portion.

  Moreover, in the lateral movement bogie of the propulsion pipe in the start shaft of the present invention, it is preferable that the pair of telescopic jacks expand and contract in an oblique direction toward the central axis of the propulsion pipe placed on the mounting base.

  According to the lateral movement carriage of the propulsion pipe in the start shaft of the present invention, when the propulsion pipe moved laterally from the lateral pulling portion to the start portion is installed on the planned route, the height direction and the lateral direction of the propulsion pipe can be easily operated. It is possible to perform fine adjustment of the position of the front, and the subsequent propulsion pipe is easily aligned and joined to the rear end of the preceding propulsion pipe that has been propelled into the ground without much trouble. can do.

  The lateral movement bogie of the propulsion pipe in the start shaft according to a preferred embodiment of the present invention is configured to push the shield propulsion machine and the propulsion pipe into the ground while sequentially connecting the propulsion pipe from the rear of the shield propulsion machine. As a propulsion method for forming a tunnel composed of a large number of propulsion pipes connected in the interior, for example, in a propulsion method using a mud pressure shield propulsion machine 10 (see FIG. 5), as shown in FIGS. The propulsion pipe 11 carried into the horizontal pulling section 52 of the vertical shaft 50 using a crane or the like is moved laterally to the starter 51 side, and is advanced to the rear end portion of the preceding propulsion pipe 11 ′ that has been propelled underground. Adopted so that the subsequent propulsion pipe 11 can be smoothly aligned and joined to the rear end portion of the preceding propulsion pipe 11 'when the work to be propelled into the ground is continued after being aligned and joined. What was done A.

  That is, in this embodiment, the tunnel by the propulsion method is formed, for example, in a portion immediately below the road while ensuring the passage of vehicles, and the start shaft 50 of the mud pressure shield propulsion machine 10 is on the planned route L. An opening for carrying equipment and materials cannot be provided. Accordingly, as shown in FIG. 1, for example, a portion directly above the start portion 51 located on the planned route L of the start shaft 50 is covered with a large number of lining plates 53 to allow the vehicle to pass and A horizontal pulling part 52 is provided at a position adjacent to the road, and the upper side of the horizontal pulling part 52 is used as an opening, and the propulsion pipe 11 and other materials and equipment are started up through the opening of the horizontal pulling part 52. To come in. As shown in FIG. 2, the laterally moving carriage 14 b (see FIG. 3) of the present embodiment propels the mud pressure shield propulsion machine 10 and the preceding propulsion pipe 11 ′ into the ground, The propulsion pipe 11 is sequentially supplied from the lateral pulling portion 52 to the front of the multistage jack 12 and the push wheel 13 in the starting portion 51 while reciprocating between the starting portion 51 and the starting portion 51.

And the laterally moving carriage 14b of the propulsion pipe 11 in the start shaft 50 of the present embodiment, as shown in FIGS. 3 and 4, is a lateral pulling portion 52 provided adjacent to the starting portion 51 on the planned route L of the tunnel. The position for aligning the propulsion pipe 11 with the rear end portion of the preceding propulsion pipe 11 ′ that has been propelled into the ground in advance while the propulsion pipe 11 is moved laterally to the starter 51 and installed on the planned route L The lateral carriage 14b is provided with an adjusting mechanism 30 and is laid across the starting portion 51 and the lateral pulling portion 52 so as to intersect a direction perpendicular or substantially perpendicular to the propulsion direction X of the propulsion pipe 11. The traverser device 14 is configured together with the guide track 14a by moving along the guide track 14a. The position adjusting mechanism 30 is disposed at the front side in the propulsion direction X of the laterally moving carriage 14b. To place The pair of telescopic jacks 31 includes a pair of telescopic jacks 31 that are disposed on both sides of the center line C along the propulsion direction X of the gantry base 21 and the tip 31a abuts on the outer peripheral surface of the propulsion pipe 11. Is installed so as to expand and contract in an oblique direction inclined upward toward the center line C.

  In this embodiment, as shown in FIGS. 1 and 4, the start shaft 50 is surrounded by a seat pile 54 and has a plurality of stages disposed inside the seat pile 54, as in a general shaft. Thus, it is firmly formed in a state where the earth pressure is stably supported by the mountain retaining support member 55. Further, the start shaft 50 is constructed such that the upper surface is an opening having a rectangular planar shape, and the lower half region in FIG. 1 constitutes a start portion 51 located in a portion immediately below the road, and this start portion The opening above 51 is covered and closed by a number of lining plates 53 arranged side by side in the vertical and horizontal directions, thereby allowing the vehicle to pass. On the other hand, the upper half in FIG. 1 constitutes the horizontal pulling portion 52 disposed at a position off the road, and the upper portion of the horizontal pulling portion 52 is held as an opening so that a lifting machine such as a crane can be used. It is now possible to carry in and out various equipment and materials using this.

  In addition, the starter 51 of the start shaft 50 has a mud pressure shield propulsion machine 10 and a propulsion pipe 11 propelled into the ground using, for example, a multistage jack 12 (see FIG. 5) on a wall behind the propulsion direction X. A reaction force wall 17 for obtaining the propulsion reaction force is formed, and a start pit 18 for starting the mud pressure shield propulsion machine 10 into the ground is formed on the wall surface in the forward direction X. . 2, 4, and 5, the start shaft 50 is illustrated in a state in which the mountain retaining member 55 is omitted for convenience.

  In the present embodiment, the laterally moving carriage 14b is perpendicular or substantially perpendicular to the propulsion direction X of the propulsion pipe 11, as shown in FIGS. 3 (a) to 3 (c) and FIGS. The traverser device 14 is configured together with the guide track 14 a laid across the starting portion 51 and the horizontal pulling portion 52 so as to cross the direction. The guide track 14a is composed of a pair of rail members 19 laid in parallel to the bottom plate portion 56 of the start shaft 50, and the laterally moving carriage 14b travels along the guide track 14a, and the lateral pulling portion 52 and the start portion 51. Smoothly reciprocates between.

  In the present embodiment, the start shaft 50 has a configuration similar to that of the traverser device 14 adjacent to the front and rear in the propulsion direction X with the traverser device 14 that moves the propulsion pipe 11 laterally interposed therebetween. Guide tracks 15a and 16a laid across the starting portion 51 and the horizontal pulling portion 52 so as to intersect the propulsion direction X or a direction substantially perpendicular to the propulsion direction X, and a laterally moving carriage that moves along these guide tracks 15a and 16a A front traverser device 15 and a rear traverser device 16 including 15b and 16b are provided. In addition to the traverser device 14, a front traverser device 15 and a rear traverser device 16 are provided before and after this, so that a mud pressure shield having a considerable weight is provided as shown in FIGS. 5 (a) to 5 (c). The multistage jack 12 as the propulsion unit 10 or the propulsion jack is moved laterally from the horizontal pulling part 52 to the starting part 51 and arranged on the planned route L, and is installed to face the starting well 18 and the reaction force wall 17. Can be easily performed.

  Then, the laterally moving carriage 14b according to the present embodiment installs the mud pressure shield propulsion machine 10, the multistage jack 12 and the like on the planned route L, and propels the mud pressure type shield propulsion machine 10 into the ground. As shown in FIG. 3, the lateral movement carriage 15b of the front traverser device 15 and the lateral movement carriage 16b of the rear traverser device 16 are arranged in the starter 51, and the horizontal movement carriage 14b of the traverser device 14 is moved to the horizontal pulling part 52 and the starter 51. The propulsion tube 11 is sequentially supplied from the lateral pulling portion 52 to the front of the multi-stage jack 12 and the push wheel 13 in the starting portion 51, and the supplied propulsion tube 11 is connected to the preceding propulsion tube 11 ′. In the process of propelling into the ground as a unit, the operation of aligning the subsequent propulsion pipe 11 with the rear end portion of the preceding propulsion pipe 11 ′ propelled in advance is facilitated. It has a structure that allows joining the pipe 11, 11 'smoothly.

  That is, as shown in FIGS. 3A to 3C, the laterally moving carriage 14b according to the present embodiment is a mounting platform including a pair of pedestals 20 made of H-shaped steel arranged in parallel at a predetermined interval. Part 21 and a pair of axle support parts 23 which are joined and integrated to the lower surfaces of these parts by welding or the like so as to connect the pair of bases 20 at both ends of the mounting base part 21. The pedestal 20 and the pair of axle support portions 23 are formed into a planar rectangular steel frame shape. Each axle support portion 23 is formed by arranging a pair of groove steels 22 facing away from each other at a predetermined interval, and a plurality of axles 24 are attached by supporting the groove steels 22 on both sides. . A plurality of traveling wheels 25 are mounted on the axles 24 so as to be rotatable and arranged at intervals between the pair of channel steels 22. Further, in the present embodiment, for the winch for moving the laterally moving carriage 14 along the guide track 14a by using the winch, which is arranged in parallel with the center portion sandwiched between the pair of axle support portions 23. The traction piece 26 is attached to and integrated with the lower surfaces of the traction piece 26 by welding or the like so as to straddle the pair of H-shaped steels 20.

  In the present embodiment, the laterally moving carriage 14b is fixed to the upper surface of one axle support portion 23 disposed on the front side in the propulsion direction X as a portion on the front side in the propulsion direction X, thereby propelling. A pair of telescopic jacks 31 that are arranged on both sides of the center line C along the propulsion direction X of the mounting frame portion 21 on which the tube 11 is placed and the tip 31a abuts on the outer peripheral surface of the propulsion tube 11 are positioned. The adjusting mechanism 30 is installed.

  Moreover, in this embodiment, a pair of expansion-contraction jack 31 which comprises the position adjustment mechanism 30 is installed in the symmetrical position on both sides of the centerline C along the propulsion direction X of the mounting base part 21, and is further mounted. The propulsion pipe 11 placed on the gantry 21 is expanded and contracted in an oblique direction toward the central axis P.

  Furthermore, in the present embodiment, the mounting base 21 is an arc-shaped portion at the lower part of the outer peripheral surface of the propulsion tube 11 in a recess between a pair of pedestals 20 made of H-shaped steel arranged in parallel at a predetermined interval. The pair of expansion and contraction jacks 31 are installed at the inner base ends of the pair of pedestals 20 and extend and contract in an oblique direction to propel the tip 31a. It is made to contact | abut to the outer peripheral surface of the pipe | tube 11. As shown in FIG.

  Here, as the telescopic jack 31 constituting the position adjusting mechanism 30, various known hydraulic jacks having a thrust of about 5 to 10 t and a stroke length of about 50 to 100 mm can be used, for example. These telescopic jacks 31 are firmly joined to the joint inner corner portion of the pedestal 20 and the axle support portion 23 by welding or the like, which is the inner base end portion of the pair of pedestals 20 via, for example, a steel joining pedestal 32. They are joined and fixed, and each expands and contracts in an oblique direction toward the central axis P of the propulsion pipe 11.

  Then, according to the laterally moving carriage 14b of the present embodiment having the above-described configuration, when the propulsion pipe 11 laterally moved from the lateral pulling portion 52 to the starting portion 51 is installed on the planned route L, the mounting platform portion 21 The position of the propulsion pipe 11 in the height direction and the lateral direction can be reduced by a simple operation of extending a pair of expansion / contraction jacks 31 attached to the front side of the propulsion direction X in an oblique direction as needed. Fine adjustment can be easily performed, so that even if the leading propulsion pipe 11 ′ is displaced from the design position due to the influence of the attitude control of the shield propulsion machine, the state of the surrounding ground, or the like, the rear end thereof It is possible to easily align and join the subsequent propulsion tube 11 to the section without requiring much labor.

  That is, according to the present embodiment, the pair of extension jacks 31 extend and contract in the oblique direction inclined toward the center line C, and therefore, for example, the height position of the distal end portion of the propulsion pipe 11 that has moved laterally to the starter 51 is set. In the case of fine adjustment, it is possible to move the tip portion with high accuracy in the height direction by simultaneously extending or contracting the pair of extension jacks. For example, when finely adjusting the position in the left-right direction of the distal end portion of the propulsion pipe 11 that has moved laterally to the starting portion 51, the distal end of the propulsion pipe 11 is expanded by contracting the other telescopic jack. The part can be moved in the lateral direction with high accuracy. Therefore, according to the present embodiment, after the propulsion pipe 11 is laterally moved on the planned route L of the starter 51 by the laterally moving carriage 14b, the position in the height direction and the lateral direction is extended while the pair of expansion jacks 31 are extended. Thus, it is possible to adjust and join the propulsion pipe 11 that follows easily and smoothly to the rear end portion of the preceding propulsion pipe 11 ′.

  Moreover, in this embodiment, a pair of expansion-contraction jack 31 is installed in the symmetrical position on both sides of the centerline C along the propulsion direction X of the mounting base part 21, and also a pair of expansion-contraction jack 31 is mounting. Since it extends and contracts in an oblique direction toward the central axis P of the propulsion pipe 11 placed on the mounting base portion 21, the expansion and contraction of these expansion jacks 31, and more accurate and accurate positioning Can be finely adjusted.

  The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, the position adjustment mechanism composed of a pair of telescopic jacks installed so as to extend and contract in an oblique direction may be provided at least in the front side portion in the propulsion direction of the laterally moving carriage, in addition to the front side portion. In addition, it may be provided in the rear part or other parts. Also, the structure of the lateral movement carriage can be different from that of the above embodiment.

It is a schematic plan view explaining the starting shaft provided with the starting part and the horizontal pulling part by which the horizontal movement of a propulsion pipe is performed using the horizontal movement trolley | bogie which concerns on preferable one Embodiment of this invention. It is a schematic longitudinal cross-sectional view along the propulsion direction explaining the condition which supplies a propulsion pipe to the back of a preceding propulsion pipe using the horizontal movement trolley | bogie which concerns on preferable one Embodiment of this invention. The configuration of a laterally moving carriage according to a preferred embodiment of the present invention will be described. (A) is a front view of a state where a propulsion pipe is placed; (b) is a plan view of a state where no propulsion pipe is placed; (C) is a side view of a state where a propelling tube is placed. A front traverser device and a rear traverser device are provided together with the traverser device to explain the structure of the start shaft. (A) is a schematic plan view, (b) is a schematic longitudinal sectional view along the propulsion direction, and (c) is propulsion. It is a schematic cross-sectional view along the direction intersecting the direction. The front traverser device and the rear traverser device are provided together with the traverser device, and the situation where the shield propulsion unit and the jack are installed on the planned route in the start shaft is illustrated. (A) is a schematic plan view, (b) is the propulsion direction. (C) is a schematic cross-sectional view along the direction crossing the propulsion direction.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Mud pressure shield propulsion machine 11 Propulsion pipe 11 'Leading propulsion pipe 14 Traverser apparatus 14a Guide track 14b Lateral movement trolley 17 Reaction wall 18 Starting pit 19 Rail member 20 Base 21 Mounting base 23 Axle support 30 Position adjustment mechanism 31 telescopic jack 31a distal end of telescopic jack 32 joint base 50 start shaft 51 start part 52 horizontal pull part 53 lining plate L planned route X propulsion direction C center line P along the propulsion direction of the mounting base part center axis of the propulsion pipe

Claims (3)

The propulsion pipe is moved laterally from the lateral pulling section provided adjacent to the starting section on the planned route of the tunnel to the starting section and installed on the planned route, and the preceding propelling pipe propelled in the ground in advance A lateral movement carriage of the propulsion pipe in a start shaft comprising a position adjusting mechanism for aligning the propulsion pipe at the rear end,
The laterally moving carriage crosses in a direction perpendicular or substantially perpendicular to the propulsion direction of the propulsion pipe and moves along a guide track laid across the starting portion and the lateral pulling portion. It constitutes a traverser device together with the track,
The position adjusting mechanism is disposed on both sides of the center portion along the propulsion direction of the mounting frame portion on which the propulsion pipe is placed in a portion on the front side in the propulsion direction of the laterally moving carriage, Consists of a pair of expansion and contraction jacks that contact the outer peripheral surface of the propulsion tube, and the pair of expansion and contraction jacks are installed to expand and contract in an oblique direction inclined upward toward the center line side ,
The mounting base part supports the propelling pipe in a state where the arcuate portion of the outer peripheral surface of the propelling pipe is dropped into a recess between a pair of pedestals arranged in parallel at a predetermined interval. And the pair of telescopic jacks are installed on the inner base ends of the pair of pedestals, and are each a laterally movable carriage of a propulsion pipe in a start shaft that extends and contracts in an oblique direction .   The pair of telescopic jacks is a laterally movable carriage of a propulsion pipe in a start shaft according to claim 1, wherein the pair of telescopic jacks are installed at symmetrical positions across a center line along the propulsion direction of the mounting base part.   The pair of telescopic jacks is a laterally movable carriage for a propulsion pipe in a start shaft according to claim 1 or 2, wherein the pair of telescopic jacks expands and contracts in an oblique direction toward a central axis of the propulsion pipe placed on the mounting base.

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