JPS6328167B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a construction method for installing a penstock using a swingable frame whose posture can be tilted.

Conventionally, when installing a large-diameter penstock into a diagonal shaft, if the inclination angle of the diagonal shaft is approximately 45 degrees or less, a fixed rail 2 is laid in the diagonal shaft 1 as shown in Figure 1, and the rail 2 is tipped over. The single pipe 5 was loaded onto a trolley 4 equipped with a balance weight 3 to prevent this from occurring, and transported to the installation location by operating a winch 6, where the single pipe 5 was installed. When the angle of the inclined shaft 1 exceeds 45 degrees, it becomes difficult to prevent it from overturning using the balance weight 3, and the single pipe 5 together with the trolley 4 overturns, and there is a limit to the degree of inclination that can be achieved with this construction method. For this reason, the single pipe was divided into several arc-shaped parts, transported to the vicinity of the installation site, and assembled and installed at the installation site. As a result, the construction was difficult, the cost was high, the work was dangerous, and the quality of the product remained unsatisfactory, all of which had been desired to be improved.

The present invention has been made to eliminate these drawbacks, and its gist is to level a swing frame provided near the single pipe intake section, place a trolley on it, and When installing a single pipe and transporting the single pipe, the single pipe is tilted along with the swinging frame to match the rail of the slope by operating a lock with a winch device and chain installed at the top of the slope, and then installed at the top of the slope. A winch device is operated to transport and install a single pipe to a predetermined installation position. This makes it possible to safely, reliably, and easily install the cart without overturning it even if the angle of the inclined shaft is greater than 45 degrees, unlike in the past.

The configuration of the present invention will be explained below with reference to an embodiment shown in the drawings. FIG. 2 is an overall sectional view showing the initial state in the construction method of the present invention, and FIGS. 3 to 7 are sectional views showing each step.

One end of the swing frame 13, which also serves as a rail, is attached to the upper end of the inclined rail 12 installed in the inclined shaft 11 with a pin 1.
4, it is pin-coupled so that it can swing freely. Swing frame 13
is placed on the pedestal support 15 and kept horizontal. A rail is provided on the swing frame 13, and the trolley 1 is mounted on the rail.
Place 6. The truck 16 is connected to the other end of the swing frame 13 by a stationary pin 17 to stop the truck 16 from moving. The single pipe 18 is placed on the trolley 16 and fixed. A lifting device 20 is arranged in the pipe intake part 19,
One end thereof is attached to the upper part of the single pipe 8. Here, the lifting device 20 is composed of, for example, a chain block.
For example, the rope bodies 22, 22 of two winch devices 21, 21 installed in the horizontal part of the upper mine are connected to pulleys 23, 23.
For example, they are connected to the upper and lower parts of the single pipe 18 via the winch devices 21, 21, so that the single pipe 8 can be suspended. FIG. 3 shows this state.

From this state, the single pipe 18 is pulled by the lifting device 20, and the swing frame 13 and the carriage 16 are tilted about the pin 14. The winch devices 21, 21 are also operated in accordance with this inclination to adjust the inclination of the single pipe 18. If the inclination of the single tube 18 exceeds a certain limit, the single tube 18 can be adjusted only by operating the winch devices 21, 21. FIG. 4 shows this state. At this point, remove the lifting device 20 and operate the winch devices 21 and 21 to lift the single pipe 18 at an angle along the inclined shaft 11, that is, until the inclined rail 12 and the rail on the swing frame 13 are in a straight line. After tilting, a receiver 24 is interposed between the other end of the swinging platform 13 and the horizontal part of the mine to support the swinging platform 13 so that it can be maintained in that state. FIG. 5 shows this state.

Next, by operating the winch devices 21, 21, the single pipe 18 is pulled up a little, and the winch devices 21, 21
Support the weight of the single tube 18 with the stationary pin 17.
pull out. The cart 16 is now separated from the swing frame 13 and can run on the rails of the swing frame 13 and the inclined rails 12. Then, by operating the winch devices 21, 21, the cart 16 is transported to a predetermined position deep inside the inclined shaft.

When the slope of the inclined shaft 11 is horizontal or nearly horizontal, the winch devices 21 and 21 are loosened or removed, and new lifting devices 25 to 28 are operated to horizontally pull the single pipe 18. That is, by loosening the lifting devices 25 and 26 and pulling the single pipe 18 with the lifting devices 27 and 28, the single pipe 18 is transported and installed at a predetermined position. FIG. 6 shows this state.

By sequentially transporting and installing the single pipes 18 in this manner, the penstock 29 is installed in the steeply inclined shaft, as shown in FIG.

Since the construction method of the present invention is configured as described above,
Even in inclined shafts with large inclination angles, which was impossible in the past, the single pipe can be easily changed to a horizontal position by fixing the trolley to the swing frame with stationary pins, making it easier to set the position of the single pipe. can be done safely and easily.

Also, even if the swinging frame is raised and the single pipe is tilted,
Since the single pipe is suspended using a winch device, the single pipe does not fall over like in the past, making it safer. In addition, the winch operation allows for reliable transport of single pipes without having to split them as in the past, allowing for high-quality, quick, and inexpensive installations that were previously impossible. It came to this.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a conventional construction method, and FIGS. 2 to 7 are sectional views showing a construction method of the present invention. 11... Diagonal shaft, 12... Inclined rail, 13... Swing frame, 14... Pin, 16... Dolly, 17... Stationary pin,
18... Single pipe, 20... Lifting device, 21... Winch device, 24... Receiver.

Claims (1)

[Claims] 1. On a swinging platform, one end of which is connected with a pin to the upper end of a sloped rail installed in a sloped shaft, so as to be able to swing freely,
A trolley is placed via a stationary pin, a single pipe is further placed and fixed on this trolley, and one end of the rope of the lifting device and winch device arranged at the pipe intake section is attached to the single pipe, and the lifting By operating the equipment and winch device, the entire swinging frame is tilted along the inclined shaft, and the swinging frame is supported by the support to maintain the tilted state. Next, after removing the stationary pin, the single pipe is tilted by operating the winch device. A penstock installation method using a swinging platform, which involves transporting and installing the penstock to a predetermined position deep inside the shaft, and repeating this process.