JPH0431358Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a concrete pouring piping device for movable formwork during concrete pouring work in tunnels.

(Prior art) Conventionally, when pouring concrete in a tunnel using a movable formwork, a worker manually inserts a mortar injection hose H into a pouring port D, as shown in Figs. 1 and 2. During work, mortar was injected after fitting, and the entire cross section was poured by changing the pouring port successively, but the weight was large and it was difficult to insert and remove the mortar injection hose H into the pouring port D and formwork W. It took a lot of effort and time to attach and detach the device, making it not only inefficient but also extremely dangerous and unhygienic work. In Figures 1 and 2, T stands for tunnel, R stands for rail, C stands for concrete, P stands for mortar pump, K stands for casting gap, J stands for various support jacks, U stands for upper form, X indicates side form and I indicates inverted form.

(Problems to be Solved by the Invention) The object of the invention is to freely and efficiently change the concrete pouring opening D within the formwork for concrete pouring in a tunnel.

(Means for solving the problem) In order to solve the above problem, the present invention lays a concrete supply pipe connected to a concrete pump in the longitudinal direction of the tunnel, and Switching parts consisting of directional control pipes and supply port pipes are slidably provided at multiple locations, and the sliding operation enables the directional control pipes and supply pipes to be alternately connected to the concrete supply pipes, and furthermore, the concrete supply pipes can be connected to the concrete supply pipes. A fixed supply port pipe is constructed at the end of the pipe, and each of these supply port pipes can be connected to and detached from an expandable connecting pipe of a concrete casting piping device that advances and retreats.

(Function) Directly face the connecting pipe of the concrete pouring piping device to the switching part installed at the position corresponding to the desired pouring opening, and operate the switching part to connect the direction control pipe and the concrete supply pipe. and connect the pipe to the supply port pipe. Thereafter, the connection pipe is extended, and the supply port pipe and the connection pipe are connected and installed. When pouring at that position is completed, the switching section is restored to its previous state, the direction control pipe and the concrete supply piping are connected again, the connection with the connecting pipe is cut off, and the concrete pouring piping equipment is moved to the next switching section. Move it and perform pouring using the same operation as above. Note that the supply port pipe at the end of the concrete supply pipe does not have a switching part, so it is directly connected to the connection pipe.

(Example) An example of the present invention will be described below based on FIG. 3. The piping device for concrete placement of this invention is
On the floor stand 2 inside the mobile formwork for concrete pouring,
A rail 3 is laid in the longitudinal direction of the tunnel T, and a bogie 8 is disposed on this rail 3. This truck 8 moves back and forth on the rail 3 by driving a pinion 5 meshed with a rack 4 attached to the rail 3 by a drive device 6, so that wheels 7 fitted to the rail 3 rotate.

10 is a pouring pipe placed on the cart 8;
It is expandable and retractable by a telescopic cylinder 11,
The casting pipe 10 is connected to a turning cylinder 9 and rotates 90 degrees left and right from an upright position within a plane perpendicular to the longitudinal direction of the tunnel T. Casting pipe 10
A concrete pipe 14 is continuous at the base of the
The tip of this concrete pipe 14 is bent horizontally and at right angles to form a connecting pipe 16 which can be expanded and contracted by a telescoping cylinder 15. Reference numeral 17 in FIG. 3 denotes an operation controller 17 that controls the operation of each component. It is.

On the other hand, a concrete supply pipe 18 connected to a concrete pump 24 is laid parallel to the rail 3 on the floor stand 2 on the side from which the telescopic pipe 16 protrudes, and its end is perpendicular to the cart 8 side. A fixed supply port pipe 19 is provided with a joint 20 attached to the bending tip to join and separate from the connection pipe 16.

In the middle of the concrete supply pipe 18,
Switching units 50 configured as follows are arranged at a plurality of locations at predetermined intervals. A U-shaped slide plate 52 is slidably supported by a cylinder 23 on a support stand 51 attached to the concrete supply pipe 18, and the slide plate 52 has a direction in which both ends are open via the slide 52. A control pipe 21 and a supply port pipe 22 whose tip is bent in an arc shape and whose tip points toward the trolley 8 are attached, and a joint 20 is attached to the tip in the same manner as described above, and the attachment part to the slide plate 52 is attached to the slide plate 5.
It is open via 2. Since the switching unit 50 has the above configuration, when the concrete pump 24 is operated in the state shown in FIG. 3, compressed concrete is discharged from the fixed supply port pipe 19.
Moreover, when the cylinder 23 of the switching part 50 on the tip side of the concrete supply pipe 18 (on the left side in the drawing is activated and the slide plate 51 is pulled out toward the front), the supply port pipe 22 changes to the direction control pipe 21 and becomes the concrete supply pipe 18. Since the connection with the concrete pump 24 is cut off from the switching section 50, the pumped concrete is transferred to the supply port pipe 2 of the switching section 50 located on the left side in FIG.
The flow is switched to discharge from 2,
This switching operation is performed in the same manner in all of the plurality of switching units 50.

Concrete placement according to the embodiment of the present invention described above is performed as follows. The pinion 5 is driven to move the cart 8 forward or backward on the rails 3, 3, and it is stopped at a predetermined position.Then, the driving pipe 10 is tilted by the turning cylinder 9 and extended by the telescopic cylinder 11, so that it can be moved to a predetermined position. Connect to pouring hole D. Next, the cylinder 23 of the switching section 50 corresponding to the telescopic pipe 16 is operated to pull out the slide plate 52, and the supply pipe 22 is connected to the concrete supply pipe 18. Then, by operating the telescopic cylinder 15 to extend the connecting pipe 16 and connecting the supply port pipe 22 and the connecting pipe 16, the concrete pumped by the concrete pump 24 is poured into a predetermined pouring port D. When the pouring at this position is completed, the telescopic cylinders 11 and 15 are operated in the opposite manner to the above to disconnect the pouring pipe 10 and the pouring port D, the connecting pipe 16 and the supply port pipe 22, and the cylinder 23 The switching section 50 is restored to the previous state, the cart 8 is moved to the next switching section 50, and pouring is performed by the same operation as described above. In addition, the supply port pipe 2 at the tip of the concrete supply pipe 18
0 does not have the switching section 50, so it is directly connected to the pipe 16 as described above.

In the present embodiment, the switching unit 50 is operated by the pressure fluid cylinder 23, but it may be any other type as long as it can slide the manual jack slide plate 52, and the sliding direction is not limited to the linear direction. Alternatively, a rotary type or other type may be used.

(Effects of the invention) By adopting the configuration detailed above, the present invention (1) can significantly reduce the pressure loss due to piping compared to the conventional method, and can easily and automatically connect and disconnect each pipe; .

(2) Since concrete can be placed freely at any location inside the center, the concrete finish is improved by placing the concrete evenly. Moreover, the filling rate is also improved.

(3) As a result of the above, the number of people required for concrete pouring can be reduced.

[Brief explanation of the drawing]

Figure 1 is a schematic cross-sectional view of the prior art, Figure 2 is the same,
FIG. 3 is a schematic front view and a perspective view of an embodiment of the present invention. Explanation of symbols of main parts, 1... Concrete pouring piping device, 3... Rail, 8... Trolley, 9...
Swivel cylinder, 10... Casting pipe, 14...
Concrete pipe, 16... Connection pipe, 18
... Concrete supply pipe, 19 ... Supply pipe (fixed), 20 ... Joint, 21 ... Direction control pipe (sliding type), 22 ... Supply port pipe,
23...Hydraulic cylinder, 24...Concrete pump, 50...Switching section, T...Tunnel.

Claims (1)

[Scope of utility model registration request] Concrete pump 24 in the longitudinal direction of tunnel T
A concrete supply pipe 18 connected to the concrete supply pipe 18 is laid, and switching parts 50 consisting of a directional control pipe 21 and a supply port pipe 22 are slidably provided at a plurality of locations along the concrete supply pipe 18, and the sliding operation The direction control pipe 21 and the supply pipe 22 can be alternately connected to the concrete supply pipe 18, and the concrete supply pipe 18 can be connected to the concrete supply pipe 18 alternately.
A fixed supply port pipe 19 is configured at the end of the
A concrete pouring piping device for movable formwork characterized in that each of these supply port pipes 19 and 22 can be connected to and detached from an expandable connecting pipe 16 of a concrete pouring piping device 1 that moves forward and backward.