JP2501392Y2 - Tube compression decompressor - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial application] The present invention temporarily shuts off the gas flow path during gas piping work using polyvinyl chloride, poly pipe, etc. or replacement work of meters, etc. The present invention relates to a tube compression and restoration machine that restores a restored tube.

[0002]

2. Description of the Related Art In conventional gas pipes and water pipes, when repairing the pipes, the gas flow or water flow is generally stopped by closing the plugs of gas, water, etc. to stop the repair work, or a cylinder is operated by a pump. A compressor that performs work by crushing the pipe and blocking the flow of gas or water with the receiving surface provided on the gate type frame with the cylinder attached and the pressure body attached to the rod from the cylinder Is known and used.

[0003]

[Problems to be solved by the invention] In the conventional repair work for pipes, etc., the work is performed after the gas or water tap is stopped and the flow is checked, but in this case, the repair work is performed. After that, it was troublesome to go to the position of the stopper again and open the closed stopper. When using a compressor, the work is difficult because a heavy gate type is used.
Furthermore, he was obsessed with the restoration of the tube after it was crushed.

[0004]

[Means for Solving the Problems] In order to address the above-mentioned demand, the present invention secures a cylinder connected to the pump body to the upper pressurizing portion of the frame formed in a U shape,
Further, at the bottom of the cylinder, two check valves and a shutoff ball valve are provided in the flow path from the pump body to the cylinder, and the piston rod that reciprocates in the cylinder is provided with a return means and at the tip. Is equipped with a pressure member that makes the restoration adapter detachable, and has a pressure-receiving portion on the lower side of the frame that has a pressure-receiving strip surface to which the same restoration adapter as described above is detachable. The pressure receiving portion and the pressure member crush the pipe on the pressure receiving surface by the pressure member via the piston rod by the operation of the pump body, and the crushed pipe is the pressure member and the pressure receiving portion. By pressing the compressed pipe located between both restoration adapters by replacing the restoration adapter provided in the above, it can be easily performed with one machine and use the shutoff valve provided in the cylinder There is provided a simultaneous decompression apparatus in which a plurality of compression is to be able in a single pump body.

[0005]

When repairing or replacing a pipe that has been piped, the pump body and the compression decompressor are carried to the repair position, and the pipe P is fitted between the pressurizing portion 1a and the receiving portion 1b of the U-shaped frame 1 After P is placed on the pressure receiving surface 2a of the pressure receiving portion 2, the oil is compressed by the pump main body, and the compressed oil pushes the check valve 15 from the flow passage 17 to open the check valve 15 into the cylinder 3. (In this case, the ball valve 21 closes the passage 19 by tightening the operating shaft 22 between the valve chambers 20 communicating with the flow passage 14).

The hydraulic pressure sent into the cylinder 3 pressurizes the receiving surface 5b of the piston rod 5 and pushes the piston rod 5 against the tension spring 11 to push the pressing surface 9a attached to the tip of the piston rod 5. When the pressure member 9 is compressed, the pressure member 9 is guided by the guide portion 1c of the frame 1 while being centered using the centering gauge of the pipe P, and gradually moves forward to gradually move the pipe P on the pressure receiving surface 2a. Is pressed by the pressing surface 9a having a taper and the flange 5a of the piston rod 5 hits the step portion 8 and is regulated, the pipe P
Is crushed without being cut, and the flow of gas or water is blocked, and when the pipe P has a small diameter outside the specified range, a spacer suitable for the pipe is used on the pressure receiving surface 2a side to block it. In this state, even if the operation of the pump body is stopped, the oil is closed by the check valve 15 and the tightening ball valve 21 and the cutoff state is maintained. Therefore, since the tube P is crushed and remains in the blocked state, it is possible to crush other tubes.

Further, when the work is completed, the operation shaft 22 which has been closed until now is loosened by the handle and retracted, the oil pressing the piston rod 5 flows back by opening the ball valve 21, and the piston rod 5 is further pulled. It is pulled by the spring 11 and retracts together with the pressure member 9. Oil is the ball valve 2
It is returned to the inside of the pump main body from the port 18 through the passages 19 and 17.

Next, in order to restore the crushed pipe P to the original state, the restoring adapters 23 and 24 are inserted into the grooves 25 and 26 provided in the pressure member 9 and the pressure receiving portion 2, and the restoring adapter 2 is used.
After the keys 23a, 24a of 3, 24 are inserted from the side and slid, the spherical bodies 29, 30 are fitted into the setting holes 27, 28 to set the positions, and then the projecting portions Pa, Pa of the crushed pipe P are restored. , 24 are provided in the holes 23d, 24d, and the pump main body is actuated in the same manner as in the compression to send the hydraulic portion into the cylinder 3 to press it from the protruding portion Pa, Pa side of the pipe 5. In this case, the restoring adapters 23 and 24 are each formed in a semi-circular surface, the tube is pushed open along the arc surface, and the tube is pushed slightly from the circle to a slightly elliptical position. When the semi-circular arc portion overlaps, the pressed state is maintained as it is. To release the pressure, the operation shaft 22 is loosened, the ball valve 21 is opened, and the oil is returned to the pump body as described above. At this time, the tube P that has been pressed has a restoring force by releasing the pressing, and can be restored to a state close to a perfect circle. That is, in the repair work, the compression / decompression machine is moved to the work position and can be easily shut off at the repair position. Further, by closing the ball valve 21, the pressed state can be maintained as it is, and other pipes are crushed. Moreover, it is convenient to restore a tube crushed by one machine on the spot.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of a tube compression / reconstructor according to the present invention, which will be described below with reference to the drawings.

Reference numeral 1 denotes a U-shaped frame. A receiving portion 1a on one lower side of the frame 1 which is opposed to the frame 1 is a pressure receiving portion 2 forming a protruding pressure receiving surface 2a, and the other upper side is The cylinder 3 is used as a pressurizing portion 1b, and the pressurizing portion 1b is provided with a mounting hole 4 for the cylinder 3, and the tip of the cylinder is inserted into the mounting hole 4 so that the cylinder 3
The step portion 3a provided on the outer periphery of the cylinder 3 is inserted until it contacts the outer surface of the pressurizing portion 1b. Further, the tip portion of the cylinder 3 is provided with a groove 3b on the outer periphery, and the retaining ring W is engaged in the groove 3b. The step 3
The tip side of the cylinder 3 is attached to the upper pressurizing portion 1b of the frame 1 by a and a retaining ring W.

The inside of the cylinder 3 is composed of a small diameter hole 6 into which the piston rod 5 is slidably fitted, and a large diameter hole 7 into which a flange 5a provided at the end of the piston rod 5 is slidably fitted. When the piston rod 5 is pushed out by the stepped portion 8 composed of, the flange 5a is received by the stepped portion 8 to regulate the rod 5.

At the tip of the piston rod 5, there is attached a pressing member 9 provided with a pressing surface 9a of a projection which is tapered corresponding to the pressure receiving surface 2a of the pressure receiving portion 2. When the tube on the pressure receiving surface 2a is compressed by the pressure member 9, the distance between the pressing surface 9a and the pressure receiving surface 2a is averaged. A guide plate 10 is attached to one end of the pressing member 9 to guide the vertical guide portion 1c of the inner wall of the frame 1 from both sides.

The piston rod 5 is provided with an oil-pressure or air-receiving surface 5b having a hollow portion, and one end of a return tension spring 11 is attached to this hollow portion, and the other end of the spring 11 is attached to the cylinder 3a. It is hooked on a screw pin 13 provided on the threaded portion of the bottom 12.

The cylinder bottom 12 is provided with a flow passage 14 which communicates with the receiving surface 5b of the piston rod 5, and the flow passage 14 passes through a check valve 15 and a flow passage 16 to supply a hydraulic or air pump body (not shown). To a port 18 which is connected via a conduit 17. Further, a valve chamber 20 is provided in the cylinder bottom 12 between a flow passage 19 and a flow passage 16 which are connected to the flow passage 14, and a shutoff ball valve 21 for opening and closing the flow passage 19 is provided in the valve chamber 20. The ball valve 21 is closed or opened by an operation shaft 22 that moves forward and backward in the valve chamber 20 to release oil and air to the pump body.

Further, the pressure receiving portion 2 and the pressing member 9 are provided with lateral guide grooves 25, 26 for guiding the keys 23a, 24a provided on the restoring adapters 23, 24 on one side surface, respectively, so as to be a slide type. In addition, a plurality of setting holes 27, 27 and 28, 28 for setting the mounting positions are provided on the other side, respectively, and spherical bodies 29, 30 are provided on the restoring adapters 23, 24 and are urged by springs 29a, 30a. Setting holes 27, 27 or 28, 2 when mounting the adapter for restoration
Lock according to step 8 to determine the mounting position of the restoration adapter.

On the pressure receiving portion 2 side, a pressure receiving adapter having a pressure receiving surface depending on the diameter of the pipe P may be used.

The restoring adapters 23 and 24 have fitting grooves 23b and 24b which are slidably fitted to the pressure receiving portion 2 and the pressure member 9, and further, on the relative surface side, a substantially semi-circular surface groove adapted to the pipe diameter. 23c and 24c are formed. This semi-circular surface 23c, 24
c is a semi-circular surface so as to be slightly elliptical when the pipe P is pressed when the semi-circular surfaces are overlapped, and the inner wall of the circular surface has projections Pa, Pa generated when the pipe P is crushed. The holes 23d and 24d to be fitted are respectively provided to stabilize the tube when it is restored.

[0018]

As described above, according to the present invention, the cylinder connected to the pump body is fixed to the pressurizing part of the frame having the U-shaped pressurizing part and the receiving part, and the flow path in the bottom of the cylinder is fixed. Is equipped with a non-return check valve and a ball valve at two locations, and the tip side of the piston rod in the cylinder is attached to a pressure member with a removable adapter that can be attached and removed. By providing a pressure receiving line on the section and providing a pressure receiving section to which the same decompression adapter as described above can be attached and detached, the compression decompressor can be moved to the repair position during repair work on the pipe. Is located between the pressure receiving surface and the pressurizing member, the pipe can be compressed by the operation of the pump body to shut off the flow path, and during compression, the ball valve is closed while the oil is being pumped and the pressed state is continued. Therefore, the next pipe can be pressed, and one pump body can It is the number of compression. Furthermore, by replacing the restoration adapter, the crushed pipe can be restored on the spot using the same machine, and the work can be shortened.

Further, since the work can be performed by one person, there is an effect that the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of a pipe compression / restoration device according to the present invention.

FIG. 2 is an enlarged vertical sectional view of a part of the cylinder bottom portion of FIG.

FIG. 3 is a cross section taken along line XX of FIG.

FIG. 4 is a view showing a part of a tube compression / recovery machine and is an explanatory view at the time of a recovery operation using a recovery adapter.

FIG. 5 is an explanatory diagram when pressing is completed at the time of restoration in FIG.

6 is a vertical cross-sectional view taken along the line YY of FIG.

[Explanation of symbols]

 1 frame 1a receiving part 1b pressurizing part 1c guiding part 2 pressure receiving part 2a pressure receiving strip surface 3 cylinders 3a, 8 step part 3b groove 4 mounting hole 5 piston rod 5a flange 5b receiving surface 6 small diameter hole 7 large diameter hole 9 pressing member 9a Pressing surface 10 Guide plate 11 Tension spring 12 Bottom 13 Screw pin 14, 16, 19 Flow path 15 Check valve 17 Conduit 18 Port 20 Valve chamber 21 Ball valve 22 Operation shaft 23, 24 Restoration adapter 23a, 24a Key 23b, 24b Fitting groove 23c, 24c Half arc surface 23d, 24d Hole 27, 28 Setting hole 29, 30 Sphere 29a, 30a Spring P pipe Pa Pipe protrusion W retaining ring

Claims (1)

(57) [Scope of utility model registration request] 1. A cylinder, which is connected to the pump body, is fixed to the one pressurizing portion of a frame integrally formed by making the pressurizing portion and the receiving portion face each other in a U-shape, and further, to the bottom of the cylinder. , A check valve and a ball valve that can be shut off are provided at two locations in the flow path that leads from the pump body to the cylinder,
Furthermore, a reciprocating piston rod is slidably fitted in the cylinder by providing a return means, and a tip of the piston rod is made detachable with a restoring adapter having a substantially semi-circular surface, and a guide portion of the frame. Attached to a pressure member guided along the pressure member, and the pressure receiving portion of the receiving portion corresponding to the pressure member is detachably provided with the same restoration adapter as the restoration adapter having the semi-circular surface of the pressure member. A pipe compression and restoration machine characterized in that the pressure member and the pressure receiving portion compress and restore the compression pipe with an adapter.