JPS5942196B2 - Fluid control valve installation equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fluid control valve installation device using an uninterrupted water construction method, in which a pipe is cut in the middle within a sealed casing, and a fluid control valve is connected to the cut portion within the casing. There are things.

This type of water-interruption construction method has the advantage that after the valve is installed, the entire casing can be removed from the installation location, leaving only the valve, and the entire casing can be used repeatedly. Since the fluid control valve is connected to the
It is technically difficult to do this from outside the housing, and no one that can be used in reality has been proposed.

For example, according to US Pat. No. 1,174,342,
A relatively wide pipe is cut out, and a relatively long split ring is slidably fitted to one pipe end of the cut part for the fluid control valve to be inserted into the cut part. A method has been proposed in which one connection part of a fluid control valve is pushed into one connection part, the entire valve is pushed out to the other side, and the other connection part is pushed into the opposite pipe end to make a connection on the valve surface side. .

However, with this method, when cutting a pipe of a certain width with a cutting machine, the cut surface of the pipe of a certain width is formed on both ends perpendicular to the pipe axis, and the pipe is removed after cutting and the fluid control valve is removed. In order to smoothly insert the pipe into the cut location, it is necessary to take into consideration the possibility that the cut end may move back after cutting and the relative position of the fluid control valve, and do not cut the pipe at a width wider than necessary. Moreover, there are disadvantages in that it becomes difficult to connect the pipe and the fluid control valve using a split ring or the like, and the pipe cannot be taken out smoothly after cutting.

An object of the present invention is to provide a device that can smoothly and efficiently take out a pipe of a certain width after cutting the pipe with a cutting machine, and insert and connect a fluid control valve to the cut location.

The fluid control valve installation device of the present invention includes a casing that has a water control valve and is attached to the pipe in a watertight state midway along the pipe, and a casing that is installed in the middle of the pipe within the casing with a constant width. a cutting machine for cutting;
In the fluid control valve installation device, which is provided with a mechanism for carrying out the cutting machine and inserting the fluid control valve into the cutting location, cutting blades are provided at both ends of the cutting machine in the direction of the pipe axis, and The distance between the two ends of the cutting machine at the upper end position of the cutting blade is set to be larger than the distance between the two ends of the cutting blade at the lower end position.

Therefore, the following effect is achieved.

In other words, when the tube is cut by the cutting machine, the end surface of the tube is inclined with respect to the tube diameter direction, and the extended portion forms a blank surface.

Therefore, the following effects can be obtained.

■ A part of the pipe with a certain width after cutting can be easily pulled upwards, improving work efficiency.

@ The fluid control valve can be easily inserted into the cut location after the cut tube has been removed, and even if it begins to shift during insertion, it will be guided by the slanted tube cutting surface and the insertion work can be performed smoothly.

0 Because it is easy to insert the fluid control valve into the pipe cut point,
There is no need to set the cut width of the pipe to be too large or more than a certain value, and the pipe and the fluid control valve can be easily connected.

Next, embodiments of the present invention will be described based on the drawings.

As shown in FIG. 1, the fluid control valve installation device consists of a housing A consisting of a lower case 1, an intermediate case 2, a water control valve 3, an upper case 4, and an upper cover 5. A screwdriver 6 is mounted on the upper cover 5. is installed and done.

Further, the lower and intermediate cases 1 and 2 are provided with semi-cylindrical flanges 8, 8, 9, 9, through which the tube 7 is inserted.

The flange portions 8, 9, 8, 9 are provided with a gland presser 10 that presses a sealing member that performs a sealing action between the lower and intermediate cases 1, 2 and the pipe 7, and a split ring setter 11.
is fitted and attached to the pipe 7.

On the other hand, inside the casing A, as shown in FIG. 11.

Reference numeral 15 denotes a cutting machine consisting of a lower half part 15a and an upper half part 15b, which are individually fitted onto the tube 7 and then integrated into one piece.

The fluid control valve positioning device of the present invention includes the cutting machine 15
After the pipe 7 is cut by the cutting machine 15, the positioning device of the cutting machine 15 is used to position the fluid control valve 16 (see FIG. 4).

Hereinafter, before explaining the present invention in detail, first, the positioning device of the cutting machine 15 and the cutting of the pipe will be explained.

In FIGS. 2 and 3, reference numeral 17 denotes guide flanges provided on both sides of the cutting machine 15, which fit into guide grooves 18 provided on the inner surface of the casing A.

19 is a circumferentially tapered projecting member provided at the lower part of the cutting machine 15, and is connected to the fitting hole 2 of the bottom base 20 of the lower case 1.
Fits into 0a.

In actual work, the protruding member 19 is placed on the bottom base 2.
The lower half 15a of the cutting machine 15 is attached to the pipe 1 by fitting it into the fitting hole 20a of No. 0, and then the upper half 15b is attached to the lower half 15a, and the guide collar 17 is attached. and is fitted into the guide groove 18.

By the way, the dimension from the center ○ of the pipe 7 to the guide collar 17 and the dimension from the center ○ to the protruding member 19 are required dimensions calculated in advance, and the fitting of the two above makes it possible to cut the cutting machine 1.
The center of 5 coincides with the center 0 of tube 7.

21 is a screw member for fixing the cutting machine 15 to the pipe 7.

Further, the head 21a of the screw member 21 is crimped by a pressing device 31 attached to the lower and intermediate cases 1 and 2, thereby fixing the cutting machine 15 to the casing A.

The cutting machine 15, which has been positioned and fixed as described above, is connected to the driver 6 shown in FIG. 1 via an intermediate shaft (not shown).

This driver 6 drives the cutting mechanism B to cut the pipe 7.

That is, by driving the driver 6, the power is transmitted to the small gear 24 via the gears 22 and 23 of the cutting machine 15, and the large gear 2 rotates around the outer circumference of the pipe 7 by the chain 25.
6.

A bite feed mechanism 27 and a bite 28 as a cutting blade are attached to the large gear 26, and each time the large gear 26 rotates once, the cam member 29 of the bite feed mechanism 27 moves the cutting machine 1.
engages with a pin member 30 fixed to the main body of No. 5 and rotates;
A feed amount of 1 pitch is supplied to the cutting tool 28.

Further, the distance between the cutting tools 28 at both ends of the cutting machine 15 at the upper end position is set to be larger than the distance l between the cutting tools at the lower end position.

This is done in consideration of the possibility that the cut end may move back after cutting the tube 7, and to facilitate the removal of the cutter 15 and the cut tube.

As described above, the cutting tool 28 performs an oblique cut on the pipe I and starts cutting.

As the cutting of the pipe 7 progresses, the casing A becomes filled with water.

When the cutting is completed, the driver 6 is removed and the intermediate shaft is raised, and the cutting machine 15 and the cut pipe are integrated into the upper case 4 along the guide groove 18 provided in the housing A. Pull up and close water control valve 3.

In this case, water flows through the tube 7, especially through the lower and intermediate cases 1, 2.

Then, remove the upper case 4 from the water control valve 3, and remove the upper case 4 from the cutting machine 1.
Remove 5.

Next, a fluid control valve 16 (see FIG. 4) is attached in place of the cutter 15, the upper case 4 is again installed on the water control valve 3, and the water control valve 3 is opened.

Thereafter, the fluid control valve 16 may be placed at the predetermined cutting location.

The positioning device utilizes a guide portion 17 which is a positioning device of the cutting machine 15 and a circumferentially tapered projecting member 19.
If the required outer diameters of the cutter 15 and the fluid control valve 16 are the same, the same member may be used, and if they are different in size, a member of a commensurate size may be used.

Hereinafter, this will be explained based on FIG.
It fits into the guide groove 18 inside.

Due to the above fitting, the fluid control valve 16 is lowered from the upper case 4 along the guide groove 18 and reaches a predetermined cutting position.

However, a circumferentially tapered projecting member 33 is attached to the lower part of the fluid control valve 16, and is fitted into the fitting hole 20a of the bottom base 20 of the lower case 1 and stopped.

The guide portion 32 and the circumferentially tapered protruding member 33 are the third
As in the case of the cutting machine 15 shown in the figure, the dimension from the center 0 of the pipe 7 is the required dimension calculated in advance, and the center of the fluid control valve 16 matches the center 0 of the pipe 7 by fitting the two together. .

In short, the fluid control valve 16 can be positioned at a predetermined position after the pipe 7 is cut by simply placing it on the bottom base 20 along the guide groove 18 in the housing A, and this type of positioning work is extremely difficult. It's easy.

Once the positioning of the fluid control valve 16 is completed as described above, the work of the installation device is to operate the split joint ring setter 11 to push the split joint ring 13 and place the tip of the split joint ring 13 on the flange of the fluid control valve 16. Part 16a.

16a.

As a result, the fluid control valve 16 and the pipe 1 are temporarily fixed.

After that, drain the water in the case A, and remove each device in the order of the upper cover 5, upper case 4, water control valve 3, split ring setter 11, gland presser 10, middle case 2, and lower case 1. .

Then, as shown in FIG. 5, the guide portion 32 and the circumferentially tapered projecting member 33 attached to the fluid control valve 16 are removed.
Tighten completely.

Finally, protective concrete 34 for reinforcing the connection points
What is necessary is to configure the opening/closing mechanism 35 of the fluid control valve 16.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram showing the installation device for the fluid control valve to which the device of the present invention is installed, Fig. 2 is a vertical cross-sectional side view showing the relationship between the pipe, the cutting machine, and the lower/intermediate case, and Fig. 3 is the vertical cross-sectional view. FIG. 4 is a front view, FIG. 4 is a vertical cross-sectional side view showing the fluid control valve positioning device and the fluid control valve, and FIG. 5 is a schematic diagram showing the completed installation of the fluid control valve. A...Housing, 3...Water control valve, 15...
... Cutting machine, 16 ... Fluid control valve, 17
, 32... Guide support, 18.1B...
- Guide member, 20.20a, 33... positioning mechanism.

Claims (1)

[Claims] 1 A casing A that has a water control valve 3 and is attached to the pipe 7 in a watertight state midway along the pipeline, and a cutting machine that cuts off the middle of the pipe 7 in a certain width within the casing A. 15, in a fluid control valve installation device that is provided with a mechanism for carrying out the cutting machine 15 to the cutting location and inserting the fluid control valve 16 at the same time, both ends of the pipe 7 of the cutting machine 15 in the axial direction; cutting blade 28
. Installation equipment.