JP2809377B2 - Lining casting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lining-casting machine suitable for a method of casting lining concrete at the same time as assembling segments in tunnel lining work.

[0002]

2. Description of the Related Art Conventionally, in this kind of construction method, there is no mechanized one, and the segments are manually assembled by using a chain block or the like, and a backing concrete is poured in each time by attaching a formwork.

[0003]

Therefore, the work efficiency is poor as well as heavy labor, and there has been a strong demand for efficient lining work and labor saving in heavy load handling by mechanization.

[0004] Therefore, an object of the present invention is to provide a lining driving machine capable of improving the efficiency of lining work and saving labor.

[0005]

In order to achieve the above-mentioned object, a lining and placing machine according to the present invention comprises: a segment assembling apparatus for gripping a segment for tunnel lining and fitting it into a predetermined position; A plurality of support jacks that support the fitted segment group as segment rings, and a backing concrete placing machine that injects concrete between the segment rings and the tunnel inner wall, straddling the rear existing segment portion and the front tunnel inner wall. It is characterized in that it is mounted on a traveling carriage.

[0006]

According to the above construction, the segment assembling apparatus assembles into a ring along the inner wall of the tunnel by moving the grasped segment in various directions. The assembled segment ring is held in the air by a plurality of support jacks. In this state, concrete is poured between the segment ring and the inner wall of the tunnel by the backing concrete placing machine while moving the entire machine forward.

[0007]

An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an overall side view of a lining and casting machine according to the present invention. A backing concrete 15 and a segment 16 are constructed inside a tunnel wall 24 by this machine. When the machine is put into the tunnel, the invert concrete 16b is cast in advance, and the reference invert segment 16a is fixed thereon.

As shown in the figure, the shaft 1
7 and a truck unit A on the inner wall of the front tunnel composed of the inner and outer cylindrical frames 20 and 21 and a truck unit B on the rear existing segment composed of the solid rubber tire 29 and the rear running frame 33 and the like.

As shown in FIG. 2, a ring support device C comprising a ring support boss frame 7, a ring support arm 9, an inside of the support, outer cylinders 10 and 11, etc. The jack 8 is slidably attached so as to be able to move back and forth by the expansion and contraction action of the jack 8.

As shown in FIG. 3, a segment assembling apparatus D including an erector boss frame 2 and an erector arm 4 is mounted on the shaft 1 by an erector moving jack 5.
Is slidably mounted so as to be able to move back and forth due to the expansion and contraction action of

As shown in FIG. 4, the shaft 1 is provided with a perfect-circle holding device E composed of a perfect-circle holding frame 34, a perfect-circle holding arm 30, and the like.
Is slidably mounted so as to be able to move back and forth due to the expansion and contraction action of

The inverted concrete 16b includes:
A traveling rail 19 is laid, and a traveling wheel 27 of the bogie portion A on the inner wall side of the front tunnel is driven by a driving force of a traveling geared motor 25 via a transmission roller chain 26 to roll on the traveling rail 19. I have. The front tunnel inner wall side bogie unit A is used to fix and stop the entire machine whenever necessary in each work step.
9 is provided with a manual parking brake 28.

The lining segment 16 is carried to the lower part of the segment assembling apparatus D on the roller conveyor 18 placed on the invert segment 16a from the right side of the wellhead in FIG.

In the segment assembling apparatus D, the erector ring 3 is slidably and rotatably mounted on the erector boss frame 2.
The output pinion of the erector turning motor 6 provided on the erector boss frame 2 meshes with a gear provided on the erector ring 3 to rotate the erector ring 3 and the erector arm 4.

The erector arm 4 can be moved in the radial direction by the expansion and contraction of the erector lifting jack 4a. The segment gripper 4b is provided at the tip of the
A normal erector device has a built-in hanging metal fitting for holding the segment 16 by pin connection, a slide jack for moving the metal fitting in the longitudinal direction of the pit, a support jack for preventing the segment 16 from hitting, and the like. The same is true.

The segment 16 carried from the wellhead is assembled at a predetermined fitting position. In order to secure a reference position at this time, the following measures are taken. In other words, while the rear existing segment side bogie portion B directly rides on the existing segment 16 assembled at an appropriate position, the concrete on the upper surface of the invert concrete 16b of the uncovered tunnel in front is still cast. Since it is not the reference plane, a height position adjusting mechanism F for correcting a deviation from the planned alignment is provided on the bogie section A on the inner wall of the front tunnel that runs on the running rail 19 laid thereon.

The height position adjusting mechanism F includes an outer cylinder frame 20.
When the external thread of the output shaft of the speed reducer 23 rotates, the internal cylinder frame 21 provided with the internal thread that meshes with the external thread moves up and down according to the rotation direction. Has become.

The segment 16 is bolted in the circumferential direction, while a hole is mounted on the left face side in FIG. 1 in the axial direction, and a pin matching the hole is mounted on the right wellhead side in FIG. Have been.

The support inner cylinder 11 of the ring support device C enters and exits along the support outer cylinder 10 by the expansion and contraction of the segment support jack 11a with pins, and the tip is a plate provided with a hole matching the pin of the segment 16. The lid has been. Further, the support outer cylinder 10 is firmly fixed to the ring support boss frame 7 via the ring support arm 9. This ring support device C
Are radially arranged to cover the entire circumference of the segment ring (see FIG. 2).

Therefore, after assembling the segments 16 in a ring shape, the support inner cylinder 11 is extended toward the segments 16 and the pins are inserted into the holes, whereby the segments 1 are inserted.
6 can be stopped in the vertical and horizontal directions. That is,
The segment 16 is held in a floating state.

In the perfect circle holding device E, the perfect circular holding arm 30 moves in and out of the outer cylinder frame 35 provided on the perfect circular holding frame 34 by the expansion and contraction of the perfect circular holding support jack 31. When the consolidation strength is not developed, the ring shape of the segment 16 is maintained.

As shown in FIG. 5, the backing concrete 15 is cast from a backing concrete pouring hole 17 provided in the backing concrete frame 14, and the backing concrete placing machine 12 mounted in front of the machine. The concrete is supplied through the backing concrete hose 13.

Next, FIGS. 6 and 7 show the operation flow of the machine.

FIG. 6A shows a start state of the flow.
The segments 16a and 16b have already been incorporated, and the backing concrete 15 has already been cast on the back side of the segment 16b, which is an unconsolidated concrete 15a. The back side of a of the segment 16 is a consolidated concrete 15b.

FIG. 6B shows the case where c of the segment 16 is incorporated and the uppermost portion is to be assembled.

FIG. 6C shows the support inner cylinder 11 coming out of the support outer cylinder 10, grasping the pin of the segment 16, and restricting the forward, backward, left and right movements of the segment 16 c.

FIG. 6D shows the movement of the perfect circle holding device E to the position c of the segment 16.

FIG. 6E shows a state in which the support inner cylinder 11 is put into the support outer cylinder 10 and the machine is on standby for forward movement.

FIG. 6 (F) shows a state in which the back concrete nest frame moving jack 8 is contracted and the back concrete nest frame 14 is moving forward while the back concrete 15 is being driven. At this time, the back side of b of the segment 16 is the consolidated concrete 15b, and the back side of the c of the segment 16 is the unconsolidated concrete 15a.

FIG. 7G shows a case where d of the segment 16 is incorporated and the uppermost portion is to be assembled.

FIG. 7H shows the support inner cylinder 11 coming out of the support outer cylinder 10, grasping the pin of the segment 16, and restricting the forward, backward, left, and right movements of d of the segment 16.

FIG. 7I shows the movement of the perfect circle holding device E to the position d of the segment 16.

FIG. 7 (J) shows a state in which the support inner cylinder 11 has been moved to the support outer cylinder 10 and the machine is on standby for forward movement.

FIG. 7 (K) shows that the entire machine is advanced by two rings and at the same time, the back concrete frame frame moving jack 8 is used.
The back concrete frame 14 is about to move forward while the back concrete 15 is being driven. At this time,
The back side of the segment 16c is the consolidated concrete 15b, and the back side of the segment 16d is the unconsolidated concrete 15a.

In the flow from A to K in FIGS. 6 and 7, the segments 16 are assembled into two rings, and the entire machine is advanced by two rings at a time. This is in order to reduce the replacement work of the rail 19 as much as possible.

As described above, in the present embodiment, since the back frame 14 of the backfill concrete is not a fixed type but a movable type, the segment assembly and the backfill concrete can be smoothly performed without the necessity of setup for each work section. There are advantages.

[0037]

As described above, according to the present invention, the efficiency of conventional inefficient lining work can be improved by loading a lining machine, and labor for heavy-weight handling can be reduced.

[Brief description of the drawings]

FIG. 1 is an overall side view of an embodiment of a lining driving machine according to the present invention.

FIG. 2 is a cross-sectional view of the segment support portion.

FIG. 3 is a sectional view of the segment assembling apparatus.

FIG. 4 is a cross-sectional view of the backfill concrete casting section.

FIG. 5 is a cross-sectional view of the perfect circle holding unit.

FIG. 6 is an operation flowchart similarly.

FIG. 7 is an operation flowchart similarly.

[Explanation of symbols]

 12 Backing concrete placing machine 15 Backing concrete 16 Segment A Front bogie inner wall side bogie section B Rear existing segment side bogie section C Ring support device D Segment assembling device E Roundness holding device F Height position adjustment mechanism

Claims (1)

(57) [Claims] 1. A segment assembling apparatus for grasping a segment for tunnel lining and fitting the segment into a predetermined position, a plurality of support jacks for supporting a segment group fitted in a ring shape as a segment ring, the segment ring and a tunnel inner wall. And a backing concrete casting machine for injecting concrete between the lining and the trolley that straddles the rear existing segment and the inner wall of the front tunnel.