JPH0235199A - Concrete primary covering form device in tunneling work - Google Patents

Abstract

PURPOSE:To miniaturize a device as well as to make improvements in working property and mobility by setting up more than two trucks in the cross direction of a tunnel in parallel, and having each presser frame attached to respective split arch centers opposed to the tunnel wall. CONSTITUTION:More than two units of a self-propellable truck 1 are parallelly set up in an interspace where more than two trucks are paralleled in the cross direction of a tunnel. Next, each split arch center is installed in these trucks 1 to which each presser frame 4 is attached. These split arch centers 2 are formed into such a structure as free of connection and separation of adjacent ones each other. In addition, in each truck, there are provided with a rotation driving part 5, a longitudinal driving part 6, a crosswise driving part 7 and a vertical driving part 8, thereby making each directional motion of these split arch centers 2 freely. Then, each presser frame 4 is opposed to a tunnel drilling surface 3 at a specified interval, and covering concrete is charged in the clearance.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a formwork device ξ used for pouring primary i-loe concrete onto a tunnel excavation surface.

(Conventional technology) Concrete-next covering in conventional tunnel construction is
As shown in Fig. 14, a center B is attached to the gate A, and a presser frame C attached to the center B is placed facing the tunnel excavation surface with an appropriate distance between the presser frame C and the tunnel excavation surface. This was done by filling the gap E between them with concrete.

(Problems to be Solved by the Invention) The conventional concrete-subsoil method has the following problems.

■ Since there is a gate-shaped structure A in the center of Tony and Le, other work vehicles have no choice but to pass inside the same gate-type FllA. However, the gate-shaped premises are narrow and inconvenient for passage.

■ Since the entire center is attached to one gate, the entire device becomes large and tends to lack mobility when moving. Furthermore, the entire device becomes complicated, and the center setting and folding operations become troublesome.

(Objective of the Invention) The object of the present invention is to provide a concrete-sublayer concrete material that is highly dynamic, does not obstruct the passage of other work vehicles, is easy to operate such as setting and folding the center, and has good workability. Our purpose is to provide formwork equipment.

(Means for Solving the Problems) The formwork device for concrete-next iWI in tunnel exit according to claim 1 of the present invention has a size that allows two or more units to be lined up in the width direction of the tunnel, as shown in FIG. Two or more carts 1 formed into R and capable of self-propelled movement, split center 2 and ton-eel excavation surface 3 divided into the same number as the number of carts L[l, and attached to the husband/7 cart l. a presser frame 4 attached to each divided center 2 so as to be able to face each other while being separated from each other for an appropriate period of time, and a rotary drive unit 5 (
(Fig. 7), a +iii rear drive unit 6 (Fig. 7) that moves the split center 2 backward, and a left/right drive unit 7 (Fig. 7) that moves the split center 2 by /E l:i. Vertical drive unit 8 that moves the divided center 2 up and down (Fig. 1)
Each divided center 2 is characterized in that adjacent pieces can be connected and separated.

As shown in FIG. 1, the formwork device for a primary covering according to the second aspect of the present invention is provided with an inclination adjustment portion that can adjust the inclination of each divided center 2 in the tunnel radial direction. 9 is provided.

(Function) The function of the concrete-subsoil frame device of the present invention will be explained below.

Figure 1 shows a case where there are two trolleys. In this case, the two trolleys are moved by themselves and put into the tunnel separately, and the two are placed sideways inside the tunnel. In this state, the 8-divided center 2 is spread out, and the presser rod 4 provided at the tip thereof is placed in opposition to the tunnel excavation surface 3 at an appropriate distance. Next 2
Is it okay to attach it to the trolley? split center 2
Adjust the height, direction, front and rear positions, left and right position 1 front and back inclination, etc. to align both centers 2 so that they can be connected.

The height of the split center 2 can be adjusted using two front support legs 11 and two rear support legs 12 attached to the trolley shown in FIG.
The slide portions 11 of the three support legs 11 and 12 are
This is done by sliding a and 12a up and down.

Adjustment of the direction of the divided center 2 is performed by the rotation drive unit 5 shown in FIG. The rotary drive unit 5 extends and contracts a rotary table 14 which is rotatably installed on a support plate 13 in FIG. It is designed to rotate more.

Adjustment of the position after 11n of split center 2 is at 111 in Figure 1.
The 111 rear drive unit 6 is operated by the 7th rear drive unit 6.
The movable part 1 of the rear movable body 17 (hydraulic cylinder etc.)
7 A can be moved back and forth by expanding and contracting.

The left and right positions of the split center 2 are adjusted by a left and right drive unit 7 as shown in FIG. Same as left 15 Drive unit 7 is i in Fig. 7.
The left and right moving table 18 on which the M rear moving table 16 is installed can be moved left and right by extending and contracting the Ij pivoting portion 19a of the left driving body (hydraulic cylinder, etc.) +9.

Adjustment of the longitudinal inclination of the split center 2 is performed by the inclination adjusting section 9 shown in FIG. The inclination adjustment section 9 is adjusted by expanding and contracting the movable section 22a of the inclination drive body (hydraulic cylinder or the like) 22 provided on the F side of the support leg connecting member 21 as shown in FIG. That is, when the movable part 22a is extended, the front support leg 11 extends in the -L direction as shown by the imaginary line in FIG. 6, and the rear support leg 12 rotates rearward about the rotating pin 23,
The split center 2 tilts backward.

Conversely, when the movable part 22a is retracted, the front support leg 11 is pulled as shown by the imaginary line in FIG. do.

The height of the split center 2 can also be adjusted by an outrigger 24 provided under the platform l as shown in FIG. In addition, by adjusting the height of these outriggers 24 individually, it is possible to adjust the inclination of Imaichi l to the left and right as shown in Fig. 4, and by extension, the inclination of center 2 can also be adjusted. The centers 2 on both sides, whose positions have been adjusted as described above, are connected by connecting the center connecting portions 25 of FIG. 1 using a connecting bottle or the like.

In addition, both bogies 1 also have Mii support legs 11. The connection is made by interconnecting the Imaichi connection pieces 26 attached to the rear support legs 12.

In this state, as shown in Fig. 9, the tunnel excavation surface 3 and the presser frame 4 are
The gap 27 between the two is filled with concrete 28 and a primary shingle is applied.

After filling the concrete, in order to fold/n the split center 2 and move the stand L, first uncouple the previously connected split centers 2 and the stand L, and then fold each split center 2 into the conventional way. Fold it in the same way as the center. In other words, it is first-order.

(2) Pull the presser rod 4 inward to separate it from the hardened concrete 28 as shown in the 9th row a.

1. As shown in Figure 9, move the support jack 32 attached to the invert arch 31 of the split center 2 to -L.
pull it up towards you.

■, 5th country 1 is pulled up by the chain block 33 and folded.

(2) As shown in FIG. 10, the side arch 35 is pulled inward by the side arch retracting device (hydraulic cylinder) 34 and folded.

■． The top arch 37 is pulled inward by the first closing device (hydraulic cylinder) 36 and folded.

:Φ As shown in FIG. 12, pull down the rear support leg 12 and the front support leg (not shown) to separate the crown arch 38 from the concrete 28. In addition, the outrigger 24 in the upper part of the figure is also pulled away from the ground G.

(Re-man) Move the 7 table l separately to the next lining position.

(Example) Figures 1 to 12 [3] show an example of the concrete-next city striking frame device of the present invention.

In these figures, 1 is for the table. This table Il is so wide that two of them can be lined up in the width direction of the tunnel.

2 is a split center, which is a conventional center divided into two parts, the same number as the number of table parts. Of these, the split center 2 on the left side of Fig. 1 is an inverted arch 31.
It is composed of a side arch 35, a crown arch 38, and a top arch 37. The divided center 2 of the right ID 11 is composed of an inverted arch 31, a side arch 35, and a crown arch 38 (there is no crown arch 37).5 These valley arches are folded at the connecting part as shown in Fig. 12 (11). This is Mi0cho Noh.

Reference numeral 25 in FIG. 1 and 111:21b is a center connecting portion, which is attached to the top arch 37.

This center connecting portion 25 is attached to the connecting pin 39 attached to the crown arch 38 of the split center 2 on the right side in FIG.
A presser frame 4 is attached to each divided center 2 so that it can be connected to the tunnel excavation surface 3 by operating the divided center 2. As shown in FIG. 2, this presser frame 4 is provided with a U plate 4a and a U plate sleeve supporter 4b.

Reference numeral 5 in FIG. 1 denotes a rotation drive unit 6 that rotates the hub/7 split center 2 provided on the δ truck l with an axis perpendicular to 1.
iii The rear drive rear moving part moves the divided center 2 back and forth. Left and right drive part, 8
is a vertical drive unit that moves the divided center 2 up and down,
These are formed as shown in FIGS. 7 and 8.

In Figs. 7 and 8, 13 is a supporting plate attached to the 1F platform, 14 is a rotating table, and 16 is an iM back-and-forth moving table 18.
is a horizontally movable platform.

i? 1. The rotary table 14 is rotatably placed over the shaft 13a of the support plate 13, and the tip of the movable part 15a of the rotary drive body (hydraulic cylinder) 15 is fixed to the rotary table 14. As a result, when the movable part +5a is expanded and contracted, the rotary table 14 is rotated.

The fore-and-aft moving table ■6 is as shown in FIG.
the side surface 16a of the back-and-forth moving table 16,
An L-shaped guide piece 61 is welded to 16b, and the edge 14a of the rotating table 14 is supported by the horizontal plate 61a of the guide piece 61. The tip of the movable part 17FX of the longitudinal drive body (hydraulic cylinder) 17 attached to the rotating table 14 is connected to the connecting piece 61b of the longitudinal moving table 16.

This results in a front and rear drive body (hydraulic cylinder)! 7 moving parts 1
When 7a is extended or contracted, the back-and-forth moving table 16 slides 1111 backwards along the guide piece 61.

+'+7i The left and right moving table I8 is mounted on the rear moving table 111 as shown in FIG. (The same guide piece (32) horizontal plate 62a is
It is placed over the lower edge 18a(7)h of 8. The tip of the movable part 19a of the left and right drive body (hydraulic cylinder) 19 attached to the left 7j moving table 18 is connected to the connecting piece 61c of the longitudinal moving table 16. As a result, when the movable part 19a of the left and right drive body (hydraulic cylinder) 19 is expanded and contracted, the left and right moving table 18 slides left and right along the guide piece 62. This is the lower drive unit (hydraulic cylinder) that adjusts the height.8 This is the two [1n
The movable part 8a of the cylinder 8 is provided inside the support leg 11 and the two rear support legs 12 (FIG. 2), and the movable part 8a of the cylinder 8 is connected to the slide part 11a of the front support leg II and the slide part 12a of the vi support leg 12. It is connected to. As a result, by expanding and contracting the movable part 8a of the vertical drive part 8, the slide parts 11a and 12
a slides up and down, and as a result, the split center 2 attached to the in support leg 11 and the rear support leg 12 is adjusted up and down.

Reference numeral 9 in FIG. 1 is an inclination adjustment section, which
This is to adjust the forward and backward inclination as shown in FIGS. 5 and 6. As shown in FIG.
The second movable part 22a is attached to the support leg connecting member 21. Due to this.

When the movable part 22a is extended, the 11th edition support leg 11 extends upward as shown by the imaginary line in FIG. It should be tilted. Conversely, if the movable part 22a is retracted, it will be supported in the front as shown by the imaginary line in Fig. 5! lt! 1
11 is pulled, the rear support leg 12 rotates in one direction i'+W about the rotation bin 23, and the split center 2 tilts forward.

Reference numeral 24 in FIG. 1 is an out guard provided under the table l. This is so that by extending downward, it can support the platform III in contact with the ground G as shown in Figure 4.

The illustrated platform 4i runs on tires, but
The platform 1 of the present invention may be moved by other methods, for example, by a caterpillar. 33 in Fig. 1 is a chain block, which is the same as the conventional one. It is something.

In FIG. 1, 34 is a side arch retracting device, and 36 is a top arch retracting device, both of which are the same as those conventional retracting devices.

(Effect of the invention) Concrete 1 - next iυ in tunnel construction of the invention
[The 1111 frame device has the following effects.

(Since the D platform 1 is divided into two or more units, the platform can be made smaller. Moreover, the H platform II 1 can move independently, making it easy to move inside the tunnel. When traveling through a tunnel, the ball can be quickly moved and evacuated to a place where it will not get in the way, and has excellent maneuverability, which also improves the workability of the ball.

■ Since the divided center 2 is divided into the same number of units as the number of units, it is smaller and easier to attach to the stand + li l. In addition, operations such as setting the one-divided center 2 on the tunnel excavation surface, folding and folding become easier.

■, When excavating a tunnel 5 Usually the 131'
excavate. Moreover, when excavating the upper flat surface (Jt), for reasons such as removing waste, for example, excavate the right side of the tunnel in the 16 radial direction J first, the left side K later, and then intersect the excavations. .j and set the bottom plate I to . Therefore, during excavation, the face in the tunnel... The first is between:
It becomes a slope as shown in Figure 3B. For this reason, the conventional gate is set at the center of the tunnel in the width direction lj'! Horizontal, cut, 1
; It could not be set close to 1. For this reason, when using gate transport, the primary covering had to be carried out after the rear of the face, which made M-U operation inefficient.

However, in the present invention, the Okiichi l is divided into two or more and the Koyuki j
, so the right half of the lower V-board I is J and /E 'l.
Even if there is a slope between 'min and 13 as shown in Fig. 13, 8 units of 1ift can move 6 to minute J and the left half K to 7/7. Therefore, as shown in Fig. 3, it is possible to insert the stand 11i1 right up to the side of the face and set the split center 2, and it is possible to perform the next mL following the excavation of the upper flat plate 14, and perform the -next ring work. Able to carry out support quickly and at a high rate.

Furthermore, even with the slope, the maneuverability of Okiichi 1 will not be impaired.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing an example of the formwork device of the present invention, FIG. 2 is a view taken along the line A-A of FIG. 1, and FIG. 3 is a diagram explanatory of the use of the formwork device of FIG. FIG. 4 is a partial detail view of FIG. 1, FIGS. 5 and 6 are explanatory views of the type F+ device of the present invention tilted forward and backward,
Fig. 7 is an exploded explanatory view of the center drive part in the same device, Fig. 8 is a view of D-r) loss of vision in Fig. 7, Fig. 9 a - d
, Fig. 10, Fig. 11 a b, and Fig. 12 are folded explanatory views of the formwork device of the present invention, Fig. 13 a is a +E view when excavating a tunnel, and IJb is a FIG. 14 is an explanatory diagram of a conventional formwork device. 14, the mold 2 is divided center 3 is the tunnel excavation surface 4 is the presser frame 5 is the rotary drive part 6 is +'+ii rear drive part 7 is the left drive part 8 is the hv drive part 9 is the inclination adjustment part

Claims (2)

[Claims] (1) Two or more carts 1 that are formed in a size that allows two or more carts to be lined up in the width direction of the tunnel and that are capable of self-propelled movement;
The divided centers 2 are divided into the same number as the number of carts 1 and are attached to each of the carts 1, the presser frame 4 is attached to each divided center 2 so that it can face the tunnel excavation surface 3 with appropriate separation, and each A rotation drive unit 5 that rotates each divided center 2 provided on the trolley 1 with the vertical direction as an axis.
, a front-back drive unit 6 that moves the split center 2 back and forth, and a left-right drive unit 7 that moves the split center 2 left and right,
This formwork device for concrete primary lining in tunnel construction is equipped with a vertical drive part 8 for vertically moving the divided centers 2, and the divided centers 2 can be connected and separated from each other. (2) The formwork device for primary concrete lining in tunnel construction as claimed in claim 1, further comprising an inclination adjustment section 9 that can adjust the inclination of each divided center 2 in the tunnel radial direction.