JP4970140B2 - Fluid valve rotation jig - Google Patents

Description

  According to the present invention, there is provided a branch member comprising an attachment member attached to the outer peripheral surface of a fluid pipe, and a fluid valve having a separation preventing portion that prevents separation by being pressed against the attachment member and fitted into the attachment member. The fluid valve is closed at the branch portion of the fluid pipe that is watertightly attached to the outer peripheral surface of the fluid pipe having a perforation, and the fluid valve is rotated about the insertion shaft that is inserted into the attachment member. The present invention relates to a jig for rotating a fluid valve used in the above.

  A branch member branched and connected from a conventional fluid pipe has a fluid valve in which a valve shaft for vertically moving a valve body is arranged on a split T-shaped pipe that covers the outer periphery of an existing fluid pipe in a watertight manner, They are connected by bolts and nuts (see, for example, Patent Document 1).

JP 2000-28059 A (2nd page, FIG. 5)

  In Patent Document 1, since the upper end of the valve shaft protrudes from the top of the fluid pipe, the valve shaft may be damaged, for example, when excavating the covering soil covering the fluid pipe. It was. For this reason, a separation preventing portion that prevents separation by being pressed against the mounting member is disposed in the fluid valve, the bolt and nut that connect the fluid valve and the mounting member are removed, and the fluid valve is rotated using a fluid valve rotating jig. Even if it tries to rotate, since the separation preventing part of the fluid valve comes into pressure contact with the mounting member due to the pressure in the fluid pipe, it is difficult to arbitrarily rotate the direction of the fluid valve.

  The present invention has been made paying attention to such problems, and provides a fluid valve rotating jig that makes it easy to rotate the direction of a fluid valve even when pressure in the fluid pipe is generated with respect to the fluid valve. The purpose is to do.

In order to solve the above-mentioned problem, a fluid valve turning jig according to claim 1 of the present invention comprises:
A branch member comprising a mounting member attached to the outer peripheral surface of the fluid pipe, and a fluid valve having a separation preventing portion that prevents separation by being pressed against the mounting member and is fitted into the mounting member, has a perforation. At the branch portion of the fluid pipe that is watertightly attached to the outer peripheral surface of the fluid pipe, the fluid valve is closed, and the fluid valve is used to rotate around an insertion shaft that is inserted into the attachment member. A fluid valve turning jig,
An engagement portion that is engaged with the attachment member; and a pressure holding portion that presses and holds the fluid valve in the insertion shaft direction toward the attachment member side and releases the pressure contact with the attachment member of the detachment preventing portion; It is characterized by having.
According to this feature, the fluid in the fluid pipe is closed by the fluid in the fluid pipe by pressing the fluid valve toward the mounting member side by using the engagement portion as a reaction force by the pressing holding portion of the fluid valve rotating jig. The pressure applied to the valve in the branching direction can be counteracted, and by maintaining this state, the force with which the fluid valve detachment prevention part presses against the mounting member can be reduced. It becomes easy to rotate appropriately.

A fluid valve rotating jig according to claim 2 of the present invention is the fluid valve rotating jig according to claim 1,
The pressing holding part is rotated around the insertion shaft and is advanced and retracted in the direction of the insertion shaft, and is attached to the tip of the advancement and retraction screw. And a pressing and holding plate that advances and retreats in the direction.
According to this feature, since the press holding plate can idle around the insertion shaft and advances and retracts in the direction of the insertion shaft together with the advance / retreat screw, the advancement / retraction screw is rotated so that the press hold plate is turned into the fluid valve. Even after the contact, the pressure holding plate can be pressed in the direction of the insertion axis without sliding the fluid valve around the insertion axis and generating friction.

A fluid valve rotating jig according to claim 3 of the present invention is the fluid valve rotating jig according to claim 1 or 2,
The engaging portion has a protrusion that can be fitted into a bolt hole formed in the mounting member in order to connect the mounting member and the fluid valve.
According to this feature, by using the bolt hole formed in the mounting member, the protrusion is fitted into the bolt hole, so that pressing is started by the pressing holding portion while maintaining the state engaged with the mounting member. it can.

A fluid valve rotating jig according to claim 4 of the present invention is the fluid valve rotating jig according to any one of claims 1 to 3,
The engaging portion is provided at one end of an intermediate member that extends in the insertion shaft direction and has an inner surface that is larger in diameter than the rotational diameter of the fluid valve, and the pressing holding portion is provided at the other end of the intermediate member. It is characterized by being.
According to this feature, the fluid valve rotating jig is provided with an engaging portion at one end of an intermediate member having an inner diameter larger than the rotating diameter of the fluid valve and a pressing holding portion at the other end. In a state in which the fluid valve is pressed and held, the fluid valve can be appropriately rotated without contacting the inner surface of the fluid valve rotating jig.

  Examples of the present invention will be described below.

  An embodiment of the present invention will be described with reference to the drawings. First, FIG. 1A is a front view showing a state where a branch member is attached to a fluid pipe, and FIG. 1B is a cross-sectional view taken along line AA in FIG. FIG. FIG. 2A is a partial cross-sectional view showing a state in which a perforating machine is attached to the branch member, and FIG. FIG. 3 is an enlarged cross-sectional view showing a connection state between the split T-tube and the fluid valve. FIG. 4 is a perspective view showing an overall image of the fluid valve rotating jig in the embodiment of the present invention. Fig.5 (a) is a partial cross section figure which shows the condition which attaches the jig for fluid valve rotation, (b) is a front view like (a). FIG. 6A is a partial cross-sectional view illustrating a state in which a jig for rotating a fluid valve is attached, and FIG. 6B is a front view similar to FIG. Fig.7 (a) is a front view which shows the condition which rotates a fluid valve, (b) is a front view which shows the condition which rotated the fluid valve.

  As shown in FIGS. 1 (a) and 1 (b), the fluid pipe 1 disposed below the ground surface G has a fluid such as waterworks flowing therein and is subjected to a predetermined pressure. . A branching member 2 attached in a watertight manner at a branching portion of the fluid pipe 1 constitutes a fluid pipe branched from the fluid pipe 1 substantially orthogonally. The branch member 2 includes a split T-shaped tube 3 as an attachment member that is attached to the outer peripheral surface of the fluid pipe 1, and a fluid valve 4 that is fitted into the split T-shaped tube 3.

  The split T-shaped tube 3 is a member having a two-part structure that covers the fluid pipe 1 in the circumferential direction, and covers the outer peripheral surface of the fluid pipe 1 in a water-tight manner over a substantially half circumference (the left half circumference in the drawing). 3a and a receiving portion 3c that is connected to the covering plate 3a by bolts and nuts 5 and covers the remaining substantially half of the circumference of the fluid pipe 1 (right half of the figure) in a watertight manner and opens in the branching direction from the fluid pipe 1 And a main body 3b. Further, on the both sides in the axial direction of the fluid tube 1 in the split T-shaped tube 3, separation preventing push wheels 6 and 6 having a two-part structure for sealing the inner surface of the split T-shaped tube 3 and the outer surface of the fluid tube 1 are mounted.

  2 (a) and 2 (b), the fluid valve 4 has a valve body 4a that moves up and down by rotating a valve shaft 4b extending up and down to open and close the flow path of the branching member 2. One end portion has an insertion portion 4c to be inserted into the receiving portion 3c of the split T-shaped tube 3. The upper end of the valve shaft 4 b projects upward from the top of the fluid pipe 1.

  Next, as shown in FIG. 3, the connection between the split T-tube 3 and the fluid valve 4 will be described. In the groove formed over the inner peripheral surface of the receiving portion 3 c of the split T-tube 3. The packing ring 7 is disposed, and the outer peripheral surface of the insertion portion 4c of the fluid valve 4 fitted in the receiving portion 3c is in contact with the packing ring 7 to prevent water leakage to the outside. Furthermore, an annular detachment preventing portion 10 is fitted in a concave groove formed along the outer peripheral surface of the distal end of the insertion portion 4c inserted inward of the receiving portion 3c. The detachment preventing portion 10 has an outer diameter larger than the inner diameter of the receiving portion 3c, and an inner wall 3d formed on the inner side of the receiving portion 3c and the concave groove of the inserting portion 4c. The movement in the insertion shaft direction is restricted between the distal end side wall 4d and the side wall 4d.

  Further, the receiving portion 3c and the insertion portion 4c have flanges 3e and 4e that face each other, and bolt holes 3f and 4f that are coaxially formed on the respective flanges 3e and 4e at two locations on the upper and lower sides. Bolts and nuts 11 are attached.

  As shown in FIGS. 2A and 2B, the drilling operation of the outer peripheral surface of the fluid pipe 1 to which the branching member 2 is attached will be described. A drilling drill having a drilling blade at the tip of the flange 4 h of the fluid valve 4. The drilling machine 12 provided with 12 a is connected in a watertight manner by bolts and nuts 13. Then, as shown in the figure, the valve body 4a of the fluid valve 4 is opened, the drilling drill 12a is moved toward the outer surface of the fluid pipe 1 in the insertion shaft direction, and the drilling drill 12a is rotated around the insertion shaft. Thus, a circular perforation 1a is formed through the pipe wall of the fluid pipe 1 in an undisturbed state. By doing so, the inside of the branching member 2 is filled with the fluid that has flowed out of the fluid pipe 1.

  After the drilling operation is completed, the drilling drill 12a is returned to the insertion shaft direction, the valve body 4a is closed, and the drilling machine 12 is removed from the fluid valve 4. Further, as shown in FIG. 3, the bolt and nut 11 that has connected the split T-shaped tube 3 and the fluid valve 4 is removed as a pre-stage of the rotation operation of the fluid valve 4 described later. In this state, a pressing force is applied to the fluid valve 4 in a direction away from the split T-shaped tube 3 due to the pressure of the fluid in the fluid tube 1. More specifically, the valve body 4a mainly receives the pressure of the fluid that is about to flow out of the fluid pipe 1, whereby the fluid valve 4 moves slightly in the direction of separating from the split T-tube 3, and the split T-tube 3 The flange 3f of the fluid valve 4 and the flange 4f of the fluid valve 4 are slightly separated from each other, but the separation preventing portion 10 pressed by the side wall 4d of the insertion portion 4c is pressed against the inner wall 3d of the receiving portion 3c. The detachment of the fluid valve 4 is prevented.

  Next, as shown in FIG. 4, the fluid valve rotating jig 14 used for rotating the fluid valve 4 around the insertion shaft will be described.

  The fluid valve rotating jig 14 extends substantially vertically in the insertion shaft direction at an attachment position to be described later, and has a substantially semi-cylindrical member 14a as an intermediate member having an inner surface larger than the rotating diameter of the fluid valve 4. And an engagement portion 14b provided at one end in the axial direction of the substantially semi-cylindrical member 14a, and a press holding portion 14c provided at the other end in the axial direction of the substantially semi-cylindrical member 14a. Yes. The engaging portion 14b extends inward along the circumferential direction continuously to one end of the substantially semi-cylindrical member 14a, and has a protruding portion 14d projecting toward the pressing holding portion 14c along the circumferential direction. There are a total of three places at approximately equal intervals. The pressing holding portion 14c is attached to the end of the forward / backward moving screw 14e, which is screwed into the other end of the substantially semi-cylindrical member 14a so as to be rotatable about the axis, and is advanced and retracted in the axial direction. And a substantially circular press-holding plate 14f that can idle around the axis and that advances and retreats in the axial direction together with the advance and retreat screw 14e. Handles 14g and 14g are attached to both ends of the substantially semi-cylindrical member 14a in the circumferential direction, and holes 14h are formed at predetermined locations on the peripheral wall of the substantially semi-cylindrical member 14a for weight reduction. .

  As shown in FIGS. 5 (a) and 5 (b), the attachment of the fluid valve turning jig 14 will be described. In the state where the advance / retreat screw 14e is rotated so that the press holding plate 14f is separated from the engaging portion 14b. The fluid valve rotating jig 14 is approached from below the fluid valve 4.

  As described above, the fluid valve rotating jig 14 in which the engagement portion 14b is provided at one end of the substantially semi-cylindrical member 14a and the pressing holding portion 14c is provided at the other end is inserted into the split T-shaped tube 3. 4 can be easily approached and attached from the outside.

  6 (a) and 6 (b), bolts formed at the lower part of the flange 3e of the split T-shaped tube 3 at two of the three protrusions 14d in the engaging part 14b. While engaging with the hole 3f, the remaining one part of the protrusion 14d is engaged with a bolt hole formed in the upper part of the flange 3e. In this state, the fluid valve turning jig 14 is arranged so that the shaft of the advance / retreat screw 14e overlaps with the fitting insertion shaft of the fluid valve 4 and the fluid valve 4 is positioned between the engaging portion 14b and the press holding plate 14f. Further, it is attached so as to be inclined at approximately 45 degrees obliquely in front view in correspondence with the bolt hole.

  Next, the press holding plate 14f is moved toward the fluid valve 4 by rotating the advance / retreat screw 14e. As described above, the bolt hole 3f formed in the split T-shaped tube 3 as the mounting member is used to engage the split T-shaped tube 3 by fitting the projection 14d into the bolt hole 3f. While being maintained, pressing can be started by the pressing holding portion 14c.

  The pressure holding plate 14f constituting the pressure holding portion 14c uses the engaging portion 14b engaged with the split T-shaped tube 3 as a reaction force, and the shaft of the fluid valve 4 is inserted by the fluid pressure in the fluid pipe 1. The fluid valve 4 is pressed toward the split T-shaped tube 3 in the direction of the insertion shaft against the force acting in the direction of separating in the direction. As a result, the fluid valve 4 slightly moves toward the split T-shaped tube 3 so that the flange 3f and the flange 4f come into contact with each other, and the separation preventing portion 10 that is in pressure contact with the inner wall 3d of the split T-shaped tube 3 is removed from the inner wall 3d. Separated or released from the pressure contact state with the inner wall 3d (see FIG. 3). The state in which the press holding plate 14f presses the fluid valve 4 can be maintained by stopping the rotation operation of the advance / retreat screw 14e at an appropriate place where the fluid valve 4 is pressed in this manner.

  Then, as shown in FIG. 6B, in a state where the pressure holding plate 14f presses and holds the fluid valve 4, a locking portion provided at one end of the turning handle 15 for turning the fluid valve 4 extending in a rod shape. 15 a is locked in a bolt hole 4 g formed in the fluid valve 4. As shown in FIGS. 7A and 7B, with this locked point as a fulcrum, by rotating the other end side of the rotating handle 15, the rotating circumferential direction is brought near the locking portion 15a. The flange portion 15b formed in the above presses the fluid valve 4 and rotates the fluid valve 4 about 90 ° around the insertion shaft.

  In this way, the fluid holding member 14c of the fluid valve rotating jig 14 presses the fluid valve 4 toward the split T-shaped tube 3 side by using the engaging portion 14b as a reaction force. The fluid valve 4 can counteract the pressure applied to the closed fluid valve 4 in the branching direction, and by maintaining this state, the force with which the separation preventing portion 10 of the fluid valve 4 presses against the split T-tube 3 can be reduced. In this state, the direction of the fluid valve 4 can be easily rotated around the insertion shaft. In addition, it becomes easier to rotate by appropriately changing the position of the bolt hole 4g for locking the rotation handle 15 during the rotation.

  Further, since the press holding plate 14f can idle around the insertion shaft and advances and retreats in the insertion shaft direction together with the advance / retreat screw 14e, the advance / retreat screw 14e rotates to move the press holding plate 14f to the fluid valve 4. Even after being brought into contact with the fluid valve 4, it is possible to press the fluid valve 4 in the direction of the insertion axis without causing friction by sliding the press holding plate 14 f around the insertion axis with respect to the fluid valve 4.

  Further, a fluid valve circuit in which an engagement portion 14b is provided at one end of a substantially semi-cylindrical member 14a as an intermediate member having an inner diameter larger than the rotation diameter of the fluid valve 4, and a pressing holding portion 14c is provided at the other end. With the moving jig 14, the fluid valve 4 can be appropriately rotated without being brought into contact with the inner surface of the fluid valve rotating jig 14 while the fluid valve 4 is pressed and held. As long as the intermediate member has an inner surface that is larger in diameter than the rotational diameter of the fluid valve 4, for example, the intermediate member may have a rectangular shape formed in a U-shape in cross-section.

  By doing so, as shown in FIG. 7B, the fluid valve 4 can be disposed in a state in which the valve shaft 4b of the fluid valve 4 protruding upward from the top of the fluid pipe 1 is laid down. Therefore, for example, the possibility of damaging the valve shaft 4b of the fluid valve 4 when excavating the covering soil covering the fluid pipe 1 can be eliminated.

  Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. It is.

  For example, in the above embodiment, the fluid valve rotating jig 14 includes a substantially semi-cylindrical member 14a as an intermediate member, an engagement portion 14b provided at one end of the substantially semi-cylindrical member 14a, and a substantially semi-cylindrical member 14a. However, the fluid valve rotating jig only needs to have at least an engaging portion and a pressing holding portion.

  Moreover, in the said Example, although the press holding part 14c of the jig 14 for fluid valve rotation consists of the advancing / retreating screw 14e and the press holding plate 14f attached to the front-end | tip of the advancing / retreating screw 14e, a press holding part is It is sufficient that the fluid valve is provided so as to be pressed and held.

  Further, in the above embodiment, the engaging portion 14b has the protrusion 14d that can be fitted into the bolt hole 3f formed in the split T-shaped tube 3 as the mounting member, but it is not necessarily formed in advance on the mounting member. However, the bolt holes may be newly provided at appropriate positions on the mounting member. Moreover, as long as the engaging part is engaged with the attachment member, for example, the engagement part may cover the attachment member in the circumferential direction.

  Further, in the above embodiment, the fluid valve rotating jig 14 is mounted with an inclination of approximately 45 degrees when viewed from the front. However, the present invention is not limited to this, and the engagement position is appropriately set corresponding to the bolt hole formed in the mounting member. Should be set. In order to facilitate the turning operation of the turning handle, it is preferable to attach the jig for turning the fluid valve at a predetermined angle so that the turning handle can be operated downward.

(A) is a front view which shows the condition which attached the branch member to the fluid pipe | tube, (b) is AA sectional drawing of (a). (A) is a partial cross section figure which shows the condition which attached the punching machine to the branch member, (b) is a partial cross section figure which shows the condition which punctures a fluid pipe | tube. It is an expanded sectional view which shows the connection condition of a split T-shaped pipe and a fluid valve. It is a perspective view which shows the whole image of the jig for fluid valve rotation in the Example of this invention. (A) is a partial cross section figure which shows the condition which attaches the jig for fluid valve rotation, (b) is a front view like (a). (A) is a partial cross section figure which shows the condition which attached the jig for fluid valve rotation, (b) is a front view like (a). (A) is a front view which shows the condition which rotates a fluid valve, (b) is a front view which shows the condition which rotated the fluid valve.

Explanation of symbols

1 Fluid pipe 1a Perforation 2 Branch member 3 Split T-shaped pipe (mounting member)
3a Cover plate 3b Body 3c Receiving part 3d Inner wall 3e Flange 3f Bolt hole 4 Fluid valve 4a Valve body 4b Valve shaft 4c Insertion part 4d Side wall 4e Flange 7 Packing ring 10 Detachment prevention part 12 Punching machine 12a Drilling drill 14 Fluid valve circuit Moving jig 14a A substantially semi-cylindrical member (intermediate member)
14b Engaging portion 14c Press holding portion 14d Protruding portion 14e Advance / Retreat screw 14f Press holding plate 15 Rotating handle

Claims (4)

A branch member comprising a mounting member attached to the outer peripheral surface of the fluid pipe, and a fluid valve having a separation preventing portion that prevents separation by being pressed against the mounting member and is fitted into the mounting member, has a perforation. At the branch portion of the fluid pipe that is watertightly attached to the outer peripheral surface of the fluid pipe, the fluid valve is closed, and the fluid valve is used to rotate around an insertion shaft that is inserted into the attachment member. A fluid valve turning jig,
An engagement portion that is engaged with the attachment member; and a pressure holding portion that presses and holds the fluid valve in the insertion shaft direction toward the attachment member side and releases the pressure contact with the attachment member of the detachment preventing portion; A fluid valve turning jig characterized by comprising:   The pressing holding part is rotated around the insertion shaft and is advanced and retracted in the direction of the insertion shaft, and is attached to the tip of the advancement and retraction screw. The jig for rotating a fluid valve according to claim 1, comprising a pressing holding plate that advances and retreats in a direction.   3. The fluid according to claim 1, wherein the engagement portion has a protrusion that can be fitted into a bolt hole formed in the attachment member in order to connect the attachment member and the fluid valve. Valve rotation jig.   The engaging portion is provided at one end of an intermediate member that extends in the insertion shaft direction and has an inner surface that is larger in diameter than the rotational diameter of the fluid valve, and the pressing holding portion is provided at the other end of the intermediate member. The jig for rotating a fluid valve according to any one of claims 1 to 3, wherein the jig is used.

Images