JP4778476B2 - Propeller pipe moving device - Google Patents

Description

  The present invention relates to a propulsion pipe suspended in a horizontal pit in a propulsion method when obstacles in the ground, especially underground underground pipes are obstructed, or when a propulsion pipe cannot be suspended directly in a main shaft due to traffic conditions. The present invention relates to a propulsion pipe moving device that can be moved laterally to a starting position in a main shaft while being placed on a cradle, and can be propelled forward by receiving thrust while maintaining the state.

  The start shafts required for the current propulsion method have severe road occupations, and it is often impossible to suspend the propulsion pipe directly on the start platform directly under the propulsion route due to the congestion of underground structures. As a construction method in that case, the start shaft is greatly widened in a direction perpendicular to the propulsion route (from a rectangular shaft to a square), or a T-type shaft or an L-type shaft, etc. It is necessary to construct a starting shaft to be installed. Therefore, there is a need for a construction method in which the starter shaft space is extended to the private land and the shoulder of the road, the propulsion pipe is inserted at a location away from the propulsion line, and the propulsion pipe is moved laterally to the start stand installed directly under the propulsion line. It has been.

Patent Documents 1 and 2 disclose a method of moving the propulsion pipe in that case. The technique of Patent Document 1 is a technique in which a part of the starting frame is removed, the moving frame is moved to the removed part, and the propelling pipe is started. This is a technology to install a portal crane and move the propulsion pipe laterally. However, the technique of Patent Document 1 has a drawback that the outer surface of the propelling pipe is damaged or the displacement of the starting rack becomes large due to repeated movement of the propelling pipe, its weight, etc., because the moving rack becomes a part of the starting stand. Moreover, the technique of patent document 2 has a problem in the structural relevance with the shaft retaining structure, the limitation of the shaft space, and the safety of work.
Japanese Patent No. 3252102 JP 2002-4779 A

  The problem to be solved by the present invention is to solve these conventional problems, and to prevent damage to the outer surface of the propulsion pipe by eliminating the friction between the starting base steel material and the concrete pipe accompanying the movement of the propulsion pipe during propulsion. It is to provide a tube moving device.

The configuration of the present invention that solves this problem is as follows.
1) In the propulsion method, the main shaft is widened in the direction perpendicular to the propulsion line to construct a horizontal shaft, and the propulsion pipe is suspended from the horizontal shaft and moved to the starting position in the main shaft. A propulsion pipe moving device for moving a suspended propeller tube on a receiving base and moving it to a push-out position via a starting position, traversing the guide base between the hanging position and the starting position, and a receiving An advancing / retreating guide rail that moves the base between the starting position and the push-off position is installed on the base frame, and a hook that releasably engages the base on the advancing / retreating guide rail is provided on the base frame. The propulsion pipe moving device 2), characterized in that the propulsion pipe moved to the position can be propelled from the propulsion start position to the push-off position as the cradle travels while being placed on the cradle. Rampant A separate roller for advancing and retreating on the advancing / retreating guide rail is provided, and the advancing / retreating roller is provided with an expansion / contraction jack. The propulsion tube moving device according to 1) described above, which is separated from the advancing / retreating guide rail. Located in the propulsion tube moving device.

  According to the present invention, the propulsion pipe suspended from the horizontal shaft is placed on the pedestal, the pedestal is laterally moved along the traverse guide rail to the start position, and the cradle that has been moved to the start position is hooked to the base frame. When the propulsion pipe is pressed from behind while the propulsion pipe is placed on the cradle, the propulsion pipe is propelled while the cradle travels along the advance / retreat guide rail. Therefore, since the propulsion pipe moves together with the cradle during propulsion, there is no friction and the outer surface of the propulsion pipe is not damaged. In addition, since the foundation cradle is not partially removed as in the prior art, the structural strength of the cradle as a cradle necessary for propulsion can be secured.

  In the present invention, when the auxiliary roller that moves the propelling pipe in the propulsion direction on the pedestal is provided on the pedestal, friction when the propelling pipe is detached from the pedestal is eliminated, and damage to the propelling pipe can be further prevented. Embodiments of the present invention will be specifically described below with reference to the drawings.

  FIG. 1 is a plan view of the propulsion pipe moving device of the embodiment, FIG. 2 is a side view of the cradle of the embodiment, and FIGS. 3 and 4 are explanatory views showing movement of the cradle and propulsion of the propulsion pipe of the embodiment. In the figure, 1 is a main shaft, 1a is a lining plate, 2 is a horizontal shaft, 3 is a foundation frame, 4 is a traverse guide rail, 5 is an advance / retreat guide rail, 6 is a cradle, 6a is a traverse roller, and 6b is advancing and retreating Roller 6c is a telescopic jack, 6d is a pedestal, 6e is an auxiliary roller, 6f is a hook, 6g is a holding band, 7 is a push jack, 7a is a push ring, 7b is a chain block for hanging a push ring, and 8 is a propelling pipe. .

  In the present embodiment, the main shaft 1 is widened in a direction perpendicular to the propulsion line to construct the horizontal shaft 2, and a lining plate 1 a for passing is installed above the main shaft 1. A foundation gantry 3 is installed in the main shaft 1 and the horizontal shaft 2, and a push jack 7 is installed in the rear wall position of the main shaft 1. A traverse guide rail 4 for traversing the cradle 6 between the suspended position and the start position, and an advancing / retreating guide rail 5 for advancing and retracting the cradle 6 between the start position and the push-off position are provided on the base frame 3. It is installed so as to intersect.

  The cradle 6 has four transverse rollers 6 a traveling on the transverse guide rail 4 and four advance / retreat rollers 6 b traveling on the advance / retreat guide rail 5, separately attached. The advancing / retracting roller 6b includes a hydraulic telescopic jack 6c. When the telescopic jack 6c is extended, the traversing roller 6a is separated from the traverse guide rail 4, and when the telescopic jack 6c is retracted, the advancing / retreating roller 6b is separated from the advancing / retreating guide rail 5. I can do it.

  Four pedestals 6d for supporting the propulsion tube 8 are provided on the upper surface of the cradle 6, and auxiliary rollers 6e for moving the propulsion tube 8 in the propulsion direction are attached to the pedestal 6d. On both sides of the cradle 6, hooks 6 f that engage with a part of the base frame 3 on the advance / retreat guide rail 5 are releasably attached.

  In this embodiment, the telescopic jack 6c is retracted to move the advance / retreat roller 6b away from the advance / retreat guide rail 5, and the transverse roller 6a is landed on the transverse guide rail 4, and the hooks 6f on both sides are removed from the base frame 3. Then, the cradle 6 is arranged at the suspended position of the horizontal shaft 2. The propulsion pipe 8 is suspended from above the horizontal shaft 2 by a crane (not shown), placed on the pedestal 6d of the cradle 6 and fixed with a holding band 6g, and the cradle 6 is started along the traverse guide rail 4 Move to the side.

  At the start position, the telescopic jack 6c is extended to land the advance / retreat roller 6b on the advance / retreat guide rail 5, and the transverse roller 6a is separated from the transverse guide rail 4, and the hooks 6f on both sides are lowered to lower part of the foundation frame 3 ( H-shaped steel flange part).

  A push wheel 7a provided at the front end of the main push jack 7 is inserted into the rear end of the propulsion pipe 8, and the main push jack 7 is extended and propelled. The cradle 6 travels on the advancing / retreating guide rail 5 by the pressing force, and the propulsion pipe 8 placed on the cradle 6 is joined to another preceding propulsion pipe 8 and propelled. At this time, the propulsion pipe 8 moves in the propulsion direction integrally with the cradle 6, so there is no friction and the outer surface of the propulsion pipe 8 is not damaged. In addition, the cradle 6 fixing the propulsion pipe 8 receives a reaction force at the time of excavation and tries to roll over. However, since the hook 6f is engaged with the foundation frame 3, the rollover is prevented.

  When the cradle 6 travels to an advanceable position, the holding band 6g is removed, and when the cradle 6 is further propelled, the propulsion tube 8 moves forward on the pedestal 6d of the cradle 6 by the auxiliary roller 6e. Detach from the cradle 6 (see FIG. 4). As a result, friction when the propulsion pipe 8 is detached from the cradle 6 is eliminated, and damage to the propulsion pipe 8 is further prevented.

  In order to propel the next propulsion pipe 8, the hook 6f is removed from the base frame 3, the main pushing jack 7 is retracted, the cradle 6 is retracted to the original starting position, and the telescopic jack 6c is retracted to advance and retract the roller. 6b is moved away from the advancing / retreating guide rail 5 and the traversing roller 6a is landed on the traversing guide rail 4 and is laterally moved along the traversing guide rail 4 to the suspended position of the traverse 2 and the above steps are repeated.

  The propulsion pipe moving device of the present invention is used for tunnel construction where the upper part of the propulsion line cannot be opened.

It is a top view of the propulsion pipe moving device of the embodiment. It is a side view of the cradle of an Example. It is explanatory drawing which shows the movement of the cradle and promotion of a propulsion pipe | tube of an Example. It is explanatory drawing which shows the movement of the cradle and promotion of a propulsion pipe | tube of an Example.

Explanation of symbols

1 vertical shaft 1a lining plate 2 horizontal shaft 3 foundation frame 4 traverse guide rail 5 advance / retreat guide rail 6 cradle 6a traverse roller 6b advance / retreat roller 6c telescopic jack 6d pedestal 6e auxiliary roller 6f hook 6g holding band 7 former push jack 7a Push ring 7b Chain block for pushing wheel suspension 8 Propulsion pipe

Claims (3)

  The main shaft is widened in the direction perpendicular to the propulsion line, a horizontal shaft is constructed, the propulsion pipe is suspended from the horizontal shaft, moved to the starting position in the main shaft and propelled, and suspended in the horizontal shaft. A propulsion pipe moving device that places the propelling pipe on the receiving base and moves it to the push-off position via the starting position, and traverses the receiving base between the suspended position and the starting position, and the receiving base An advancing / retreating guide rail that advances and retreats between the starting position and the push-off position is installed on the foundation frame, and a hook that releasably engages the receiving frame on the advancing / retreating guide rail with the foundation frame is installed on the cradle. A propulsion pipe moving device characterized in that the propulsion pipe moved can be propelled from a propulsion start position to a push-off position as the cradle travels while being placed on the cradle.   The cradle is equipped with a traversing roller that travels on the traverse guide rail and an advancing / retreating roller that travels on the advancing / retreating guide rail. The advancing / retreating roller is equipped with a telescopic jack, and the traversing roller is separated from the traversing guide rail when the telescopic jack is extended. The propulsion pipe moving device according to claim 1, wherein the advancing / retreating roller is separated from the advancing / retreating guide rail when the telescopic jack is retracted.   The propulsion tube moving device according to claim 1 or 2, wherein an auxiliary roller for moving the propulsion tube in the propulsion direction on the cradle is provided on the cradle.

Images