JPH0455117Y2 - - Google Patents

Description

[Detailed Description of the Invention] <<Industrial Application Field>> This invention relates to a formwork transportation device, and particularly to a formwork transportation device used in the shield construction method.

<<Prior Art>> As is well known, there is a cast-in-place lining method as a type of shield construction method, and in this construction method, lining concrete is usually sequentially poured behind a shield excavator.

In this construction method, a separably assembled formwork is generally installed inside the excavated ground,
The tunnel is constructed by pouring lining concrete into the gaps, but since the poured concrete must be cured until it reaches its hardness, multiple formworks are connected in the axial direction of the tunnel.

After curing, the part of the formwork is successively demolded from the rear, separated, and sent to the front, where it is reassembled and used. , for example, Jikko 61-
As disclosed in Japanese Patent No. 39037, a gate-shaped movable frame that runs inside a tunnel and is provided with a lifting device has been proposed, but this transportation device has the following problems.

<<Problems to be solved by the invention>> In other words, in the conveying device of the above-mentioned publication, since it is a lifting method, the inverted form located at the bottom of the formwork assembled in an annular shape can be transported, but the side form located at the side and upper part cannot be transported. It was not possible to transport the crown form.

This idea was made in view of these conventional problems, and its purpose is to
The object of the present invention is to provide a device that can transport all parts of formwork with one device.

<Means for Solving the Problems> In order to achieve the above object, this invention provides a transport device for separably assembled formwork for lining concrete that is sequentially poured and formed behind a shield excavator. , a bogie that runs along the tunnel to be constructed; a pair of telescoping arms that are swingably supported on the sides of the bogie for attaching and detaching the invert form of the formwork; and a pair of telescopic arms that are erected on the bogie. a pedestal for attaching and detaching the crown form of the formwork, which is supported in an extendable manner on the support column; and a telescopic jack, one end of which is swingably supported by the pedestal, for attaching and detaching the side form of the formwork. It was composed of

<<Operation>> According to the conveying device having the above configuration, since the trolley is provided with the swingable telescoping arm, the telescoping pedestal, and the swingable telescoping jack, the invert form constituting the formwork is , crown form,
The side forms can be detached and transported.

<<Embodiments>> Hereinafter, preferred embodiments of this invention will be described in detail with reference to the accompanying drawings.

FIGS. 1 to 9 show an embodiment of the legal form transporting device according to this invention.

The conveying device shown in the figure is used to place lining concrete that is sequentially placed in the axial direction of the tunnel behind the shield excavator (not shown) located at the right end in Figure 5a, and is separable. This is for transporting the formwork 10 assembled in a ring shape.

The formwork 10, as shown in detail in FIG.
The tunnel cross section is divided into five parts at approximately equal angular intervals, and includes a crown form 12 at the ceiling, a pair of side forms 16, 16 connected to both ends of this crown form 12 by hinges 14, 14, and side forms 16, 16. Connecting bolt 18 to the end of
It consists of a pair of invert forms 20, 20 connected to each other, and a side form 16.
The joint surface between the and invert form 20 is an inclined surface, and the formwork 10 is separated by drawing the crown form 12 and side form 16 inward and removing them, and then the invert form 20 is demolded.

Further, the side form 16 and the invert form 20 are provided with brackets 22, 22, respectively, which are used for separation and assembly, protruding from the inner surface, and a gate-shaped pedestal 24 is provided on the inner surface of the invert form 20 for running. Rails 26, 26 are provided in the axial direction.

2 to 4 show details of the cart 28 running on the pedestal 24. The cart 28 is assembled into a rectangular shape, and the rail 3 installed on the mount 24
A wheel 31 that rolls along the widthwise direction of the wheel 31 and a pair of first jacks 32 that adjust the widthwise length of the wheel 31 are provided.

A second jack 32 is installed in the center of both sides in the longitudinal direction of the truck 28, and the invert form 2
A pair of telescoping arms 34, 34 that extend and contract in two steps for attaching and detaching the 0 are provided, and one end of a support arm 36 mounted perpendicularly to the telescoping arms 34 is hinged to the trolley 28 via a pin 37. is,
Moreover, a swinging jack 38 whose both ends are connected with a pin is interposed between the intermediate position of the support arm 36 and the trolley 28, and the telescoping arm 34 is extended and contracted in the axial direction by the second jack 33. At the same time, it is configured to be swingable on the side of the pedestal 24 by a swinging jack 38.

Then, pillars 40 are erected at the four corners of the truck 28, and each pillar 40 has a third pillar inside.
A third jack 42 is installed inside, and a pedestal 44 is installed so as to connect the ends of the telescopic rods of each jack 42. When the third jack 42 is extended, the crown form 12 is received on the pedestal 44. and remove it.

Further, the pair of telescopic arms 3 are mounted on the pedestal 44.
4, 34, and the above side form 1
4 telescopic jacks 46, 4 for attaching and detaching 6.
6 is swingably installed via a pin 46 so as to be suspended.

As shown in FIG. 5, the pedestal 24 has support jacks 50, 50 arranged at both ends, and is divided into a large number of pieces along the axial direction, which are joined together with connecting bolts 52. By making the insertion hole 52 into an elongated hole, it is configured so that it can be arranged along the curve of the tunnel, and by connecting a plurality of formworks 10 in the axial direction of the tunnel, it can be inserted into the invert form 20 that is connected to each other. The vehicle is equipped with wheels 54 that run on the provided rails 26.

The pedestal 24 suspends and supports a screw conveyor 56 for discharging excavated earth and sand, which is provided so as to pass through the pedestal 24 .

Formwork 10 using the conveying device configured as described above
Demoulding, separation, movement, and reassembly will be explained with reference to FIGS. 5 to 9.

In Fig. 5a, section A is the part where the cast lining concrete 58 has already been cured, section B is the part where the formwork 10 is installed and the lining concrete 58 is being cured, and section B is the part where the lining concrete 58 is being cured by installing the formwork 10.
This is the part where lining concrete 58 will now be placed.

In section B, a plurality of formworks 10 shown in ~ are connected.

Note that the reference numeral 60 shown in FIG. 5a is a hydraulic control unit that controls each jack.

Now, assuming that curing of the left end portion of section B has been completed, first, as shown in FIG. 5a, after removing the crown form 12 and side form 16 of the formwork 10 in that portion, Jyatsuki 5
0 is grounded and the trolley 28 is moved onto the invert form 20 of.

Then, after extending the telescopic arms 34, 34 and connecting their tips to the brackets 22 of the invert form 20 with bolts or the like, the swinging jack 38 is extended while the second jack 33 is contracted. inverted form 2
0 is demolded and separated.

FIG. 6 shows this state.

Next, after moving the trolley 28 forward and positioning it in section C where the lining concrete 58 is to be placed, the swinging jack 38 contracts and the second jack 33 expands to reach the position shown in FIG. 5a. The invert form 20 is grounded to the adjacent part and bolted to the invert form 20 on the left side (see FIG. 7).

After that, the cart 29 is moved to the rear part again, and the third jack 42 is extended to receive the crown form 12 on the pedestal 44, and the tips of the telescoping jacks 38 are attached to each side form 16. After being connected to the bracket 22, the connection between the parts is released and the crown form 12 and side forms 16 are demolded.

In this case, since the crown form 12 and the side form 16 are connected by the hinge 14,
If the third jack 42 and the telescopic jack 38 are slightly contracted, the state shown in FIG. 8 will be achieved, and smooth movement will be possible.

Then, the truck 28 is moved forward, and thirdly, the jacks 42 and the telescopic jacks 38 are extended to connect the already installed invert form 20 and side form 16, and to connect the crown form 12 at the part. Reassembly of the formwork 10 is completed by interconnecting the side forms 16 (see FIG. 9).

After that, after placing the lining concrete 58 and propelling the shield excavator, the support jack 50 is retracted, the pedestal 24 is moved forward, the support jack 50 is landed again, and the inverted form of the part is completed. 20, crown form 12,
The tunnel is constructed by repeating the above operation in the order of the side forms 16.

In this case, as the frame 24 moves forward, the hanging position of the screw conveyor 56 is sequentially rearranged to the front.

Now, in the transporting device for the formwork 10 configured as described above, the inverted form 2 of the formwork 10 is
The telescoping arm 34 for attaching and detaching the crown form 12 and the telescopic arm 34 for attaching and detaching the side form 16 are pivoted by a swinging jack 38 on the side of the pedestal 24, respectively. Since it is located above the pedestal 24, demolding, separation, movement, and reassembly of the formwork 10 can be performed without any problem, regardless of earth removal.

In the above embodiment, the cart 28 runs on the pedestal 24, but the wheels 31 of the cart 28
The legs of the carriage 28 may be extended to allow the carriage 28 to run directly on the rails 26.

<<Effects of the invention>> As described above in detail in the embodiments, according to the formwork transporting device according to this invention, the series of cycles of demolding, separation, transportation, and reassembly of formwork can be carried out by one transporter. The equipment makes it possible to do it smoothly.

[Brief explanation of drawings]

Figure 1 is a side view of the formwork used to implement the invented device, Figure 2 is a top view of the trolley, Figure 3 is a view taken along arrow A-A in Figure 2, and Figure 4 is A in Figure 2. -B arrow view,
FIGS. 5 to 9 are explanatory diagrams sequentially showing the process of using the device. 10...Formwork, 12...Crown form, 1
6... Side form, 20... Invert form, 24... Frame, 28... Dolly, 34... Telescopic arm, 40... Support column, 44... cradle, 46...
...Telescopic jack, 56...Screw conveyor,
58...Lining concrete.

Claims (1)

[Scope of utility model registration request] In a transportation device for separably assembled formwork for the lining concrete that is sequentially poured and formed behind the shield excavator, there is a truck that runs along the tunnel being constructed, and a truck that can swing to the side. a pair of telescoping arms supported by and for attaching and detaching the invert form of the formwork; and a pedestal that is extendably supported by the pillars erected on the truck and for attaching and detaching the crown form of the formwork. ,
1. A formwork conveyance device comprising a telescoping jack, one end of which is swingably supported by the pedestal and for attaching and detaching the side form of the formwork.