JP3797282B2 - Pipe stop valve removal device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention mainly relates to a water stop for a pipe that is attached to a mouth portion of a cable pipe in a manhole mainly for an inspection work of an underground cable and its pipe line, a new cable passage work, and other work. The present invention relates to a stopper removing device.
[0002]
[Prior art and problems to be solved by the invention]
The underground cable is laid and accommodated in a cable conduit buried underground. Each pipeline communicates between manholes provided at a predetermined distance, and each pipeline opens into the manhole. Normally, the openings are opened in parallel in multiple rows. The pipe in use has a cable inserted therein, and the mouth is closed by a water stop cock that is a padding around the cable. For unused empty pipelines, a stop cock is provided at the mouth of the pipeline that opens to the manhole.
[0003]
As shown in FIGS. 11 and 12, the water stopcock 3 of the mouth portion 2a of the cable conduit 2 opened in the manhole 1 is a split ring in which a part of an annular body made of an elastic body such as a rubber material is cut out. A water absorbent mat 3a is provided on the outer periphery of the portion fitted into the mouth portion 2a of the pipe line 2 as necessary, and is fitted from the crack portion 3b around the cable 4 and the mouth portion 2a. The water absorption mat 3a absorbs moisture and expands, and is in a state of being extremely firmly fixed to the mouth portion 2a.
[0004]
For this reason, it is not easy to remove the stop cock 3. For example, an operator removes the stop cock while crushing the stop cock using a tool such as a cutter knife, a driver, or a scratching bar.
[0005]
This work has a risk of damaging an existing cable, is a difficult and time-consuming work, and the work efficiency is extremely low.
[0006]
The present invention has been made in view of the above, and has made it possible to remove a stop cock safely, easily and efficiently by utilizing a mechanical force generated by a hydraulic advance / retreat means or a screwing operation. An apparatus for removing a water stop cock for a pipeline is provided.
[0007]
[Means for Solving the Problems]
The first apparatus for removing a water faucet for a pipe according to the present invention that solves the above problem removes the water faucet for a pipe that is attached to the mouth of a cable pipe in a manhole or a sinus. Removal device for the manhole whose required length from the tip Or a cave of inner wall A plurality of screw members for pulling out, each of which has a spiral shape that can be screwed into the water stop cock exposed on the surface, and has an engaging means on the other end; An extraction member for pulling out the plug, and the extraction member includes an engagement member having an engagement hole portion through which the plurality of screwing members can be inserted and the engagement means can be engaged; Inside Projecting toward the wall And having a plurality of leg members in contact with the inner wall surface The reaction force receiving plate is disposed at a required interval in the pull-out direction of the stop cock, and the advancing / retreating direction is set between the engagement member and the reaction force receiving plate as the pull-out direction of the stop cock. The both ends are connected by the advancing / retracting means connected to the engaging member and the reaction force receiving plate, and the engaging member is provided to be separated or accessible with respect to the reaction force receiving plate by the operation of the advancing / retreating means. Each of the engaging member and the reaction force receiving plate is formed such that a part of the insertion portion of the cable extending from the water stop cock is partially opened outward.
[0008]
According to the removing device of the present invention, after the screwed member is positioned and screwed with respect to the water stop cock, the extraction tool can be set around the cable without any problem, and the reaction force receiving plate is interposed via the leg member. The Inner wall In addition to being able to be positioned in contact with the surface, the engaging member can be engaged with and engaged with a screwing member for pulling out the distal end side screwed into the water stopper. In this state, the engaging member is made to be based on the reaction force receiving plate by the operation of the advancing / retreating means interposed between the reaction force receiving plate and the engaging member. The wall By moving in the direction of separating from the surface, the water stop cock at the pipe port portion can be pulled out together with the screwed member. This makes it possible to move the engaging member engaged with the screwed member screwed into the water stop cock of the pipe port portion by mechanical force by the advancing and retracting means without damaging the existing cable. The water faucet can be easily and safely pulled out and removed together with the screwed member.
[0009]
The engagement member is in contact with the reaction force receiving plate. inner wall The engagement member is separated from the reaction force receiving plate by the operation of the advancing / retreating means disposed at a distance on the side far from the surface and interposed between the engagement member and the reaction force receiving plate. When the stop cock is pulled out by the movement in the separation direction, the pull-out removal action of the stop cock is reliably performed.
[0010]
As the advancing / retreating means for moving the engaging member, a cylinder mechanism or jacking means by hydraulic pressure such as hydraulic pressure is used. Consisting of either Advancing / retreating means is preferable, and it can be easily and reliably advanced and retracted with a strong mechanical force, and the engaging member can be reliably separated or approached from the reaction force receiving plate, facilitating the water stop cock. Can be pulled out.
[0011]
In addition, the second apparatus for removing a water tap according to the present invention includes: Said manhole Or in the cave A plurality of threaded nail-like screwing members that can be screwed into the water faucet exposed on the wall surface and having engagement means at the rear end, and for pulling out the water faucet together with the screwing member The puller has a screw tube portion through which a cable can be inserted and a screw is formed on the outer periphery. Inside An engagement member provided with an engagement hole portion through which the plurality of screwed members can be inserted into a flange portion provided at an end portion on the wall surface side, and the engagement means can be engaged;
In the screw cylinder Facing the flange Only loose fit for axial movement Last Outside the flange Inside Multiple protruding toward the wall Having leg members, Through the leg members Abutted against the inner wall surface Opposite side of the reaction force receiving plate and the flange portion of the reaction force receiving plate surface Opposite side Abut the surface An operation ring member for moving the engagement member in the axial direction based on the reaction force receiving plate by rotation in a state of being screwed to the screw cylinder portion at a position and in contact with the reaction force receiving plate; And the engagement member including the screw tube portion, the reaction force receiving plate, and the operation ring member are each formed by opening a cutout outward so that the cable can pass in a part of the circumferential direction. It is characterized by.
[0012]
According to the removing device of the present invention, the engaging member including the screw tube portion of the extraction tool is set around the cable from the notch opening, and the screw-like screw-in member is passed through the engaging hole portion of the engaging member. Is screwed into the water stop cock exposed at the pipe opening, and the engaging means of the screwed member is engaged with the engaging hole. In this way, the reaction force receiving plate is loosely fitted to the outer periphery of the threaded cylindrical portion of the engaging member. Inside The operation ring member is screwed into the screw cylinder portion and is brought into contact with the reaction force receiving plate after the contact with the wall surface. At this time, both of the reaction force receiving plate and the operation ring member can be set to the above state without difficulty so as to allow the cable to pass through a notch opening part of the outer periphery.
[0013]
Then, in this state, the operation ring member is rotated, and the screw cylinder member, that is, the engagement member is pulled and moved in the direction away from the pipe port portion based on the reaction force receiving plate. At the same time, it is possible to pull out the stop cock at the pipe mouth, Said The removal method of the invention can be facilitated and carried out reliably.
[0014]
In the removal apparatus of the present invention, Inside The plurality of leg members of the reaction force receiving plate that abuts against the wall surface are bolts that are screwed into the reaction force receiving plate, and the protruding length can be adjusted by adjusting the screwing position of the bolt. What is provided in this way is preferable. This Inside In addition to ensuring a sufficient space for pulling out the stop cock between the wall and the reaction force receiving plate, Inside Even if there is a slight unevenness on the wall surface, it can be adequately accommodated by adjusting the length of the leg member, and the extraction tool can be set without causing rattling or tilting.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described based on examples shown in the drawings.
[0016]
First, the 1st removal apparatus of this invention used in order to remove the water stop cock for pipes is explained. The pipe stop cock 3 to be removed is as described in the prior art based on FIG. 11 and FIG. 12, and has a split ring having a split portion 3 b in a part, and the cable 4 extends from the split portion. It is fitted to the mouth portion 2a of the pipe line 2 that opens into the manhole or the cave in a state fitted to the outer periphery.
[0017]
The first apparatus for removing a stop cock for pipe A1 according to the present invention comprises: The inner wall of the manhole or cave, For example, manhole 1 inner wall A plurality of screwing members 5 for pulling out of the threaded rod shown in FIG. 1 formed so as to be screwable from the distal end side to the water stop cock 3 exposed from the pipe end on the surface 1a, and the screwing member 5 A pull-out tool 10 shown in FIGS. 2, 3, and 4 is provided for pulling out the stop cock 3 together with the screw-in member 5. In addition, if necessary, a confirmation plate 30 (FIG. 5) for confirming the removal space and the screwing position of the screwing member 5, and a guide member 40 when screwing the screwing member 5 into the water stopcock 3 (FIG. 6). ) Can also be combined.
[0018]
As shown in FIG. 1, the drawing-out screw-in member 5 has a tip 5 a Inner wall The surface 1a has a sharp shape that can be pierced with respect to the water stop cock 3 exposed from the pipe opening, and is formed in a spiral shape whose required length is relatively large from the tip 5a. The stopper 3 is formed to be screwable. Reference numeral 6 denotes a spiral portion. Further, the portion of the required length from the other end of the screwing member 5 for drawing is formed as a normal screw portion 8 capable of screwing a nut 7 as a locking means into an arbitrary position, and the end portion 5b is a square shape. When the screw is inserted into the water stop cock 3, the square end portion of the box-type wrench can be fitted to the square end portion 5b and rotated. As the engaging means, means other than the nut 7, for example, clip means that can be attached at an arbitrary position can be used.
[0019]
The total length of the screwing member 5 for pulling out can be arbitrarily set in consideration of the pulling out action by the pulling tool 10, but the length of the spiral portion 7 on the tip side of the screwing member 5 is usually set as the object to be pulled out. Depending on the axial dimension of the stop cock 3, for example, it is formed to be approximately the same as or slightly longer than the axial dimension of the stop cock 3. The length of the screw portion 8 on the other end side of the screw-in member 5 is determined in consideration of the drawing space of the stop cock 3. Inside The length is set such that the nut 7 serving as the engaging means can be engaged with an engaging member, which will be described later, of the pulling tool 10 set in contact with the wall surface 1a.
[0020]
As shown in FIGS. 2 to 4, the extraction tool 10 includes a plate-like engagement member 11 that engages with a plurality of extraction screwing members 5, and a predetermined interval from the engagement member 11. Are arranged substantially parallel to each other, Inside A reaction force receiving plate 15 that is brought into contact with the wall surface 1a and receives a reaction force during the pulling operation, and is interposed between the engaging member 11 and the reaction force receiving plate 15, and the engaging member 11 and the reaction force. It comprises an advancing / retreating unit, which will be described later, as an axially moving unit 20 that connects the receiving plate 15 so as to be separated from each other.
[0021]
As shown in FIG. 2, the engagement member 11 has a substantially U-shaped front surface with a part of the annular shape opened as shown in FIG. 2, and the central opening serves as an insertion portion 12 for the cable 4. Can be inserted through the notch opening 12a. The engaging member 11 is provided at a plurality of positions with a predetermined interval in the circumferential direction around the cable insertion portion 12, for example, at three approximately equiangular intervals as shown in the drawing from the viewpoint of stability during drawing. An engagement hole 13 is formed through which the extraction screwing member 5 can be inserted. On the periphery of the engagement hole 13, a convex edge 14 is provided on the side opposite to the reaction force receiving plate 15 as a seat when the nut 7, which is the engagement means on the screw-in member 5 side, is engaged. It has been.
[0022]
In addition, the reaction force receiving plate 15 is formed by opening a part of an annular shape so as to form a substantially U-shaped front surface that is slightly larger than the engaging member 11, and the central opening serves as an insertion portion 16 for a cable. The direction of the notch opening 16a is formed and aligned with the direction of the notch opening 12a of the cable insertion portion 12 of the engaging member 11. In particular, in the case of the figure, the central opening as the insertion portion 16 is formed slightly larger than the substantially circular range where the plurality of engagement holes 13 of the engagement member 11 are present, and each screw member 5 is It can be inserted into the engaging hole 13 of the engaging member 11 without any problem. In the case where the diameter of the opening as the insertion portion 16 is reduced, an insertion hole corresponding to the engagement hole portion 13 of the engagement member 11 may be formed.
[0023]
The reaction force receiving plate 15 has a side opposite to the side connected to the engaging member 11, that is, a manhole. Or inside of the cave Wall 1a A leg member 17 projecting toward the side of the leg member 17 is provided. Inside By contacting the wall, Inside A predetermined space can be secured between the wall 1a. In the case of the reaction force receiving plate 15 shown in the figure, bolts as the leg members 17 are screwed into a plurality of places at intervals around the periphery of the insertion portion 16. By adjusting the screwing position of the bolt, the protruding length can be reduced. Inside It can adjust according to the unevenness | corrugation of the wall surface 1a. This Inside Even if the wall surface 1a has irregularities, it can be brought into contact with good stability without rattling. It is preferable that the bolts as the leg members 17 are provided at a plurality of places, particularly at three or more places as shown in the figure because of good stability at the time of contact.
[0024]
As the leg member 17, Inside As long as a certain space or more can be secured and held between the wall surfaces, the present invention is not limited to the one using the bolt of the illustrated embodiment. Further, the leg member 17 is preferably one that can be adjusted in length, but can be implemented even if the length cannot be adjusted.
[0025]
As the axial movement means 20 that connects the engaging member 11 and the reaction force receiving plate 15 so as to be separated from each other, for example, an advancing / retreating means 21 such as a hydraulic cylinder mechanism that is operated by a relatively small hydraulic pump is used. In the case of the figure, the advancing / retreating means 21 and 21 comprising two hydraulic cylinder mechanisms stop the advancing and retreating directions on both sides of the cable insertion portions 12 and 16 between the engaging member 11 and the reaction force receiving plate 15. Both ends of the faucet 3 are connected to the engaging member 11 and the reaction force receiving plate 15 in parallel in the pulling direction of the faucet 3. In other words, the engagement member 11 can be separated or approached from the reaction force receiving plate 15 with a strong force by the operation of the advance / retreat means 21, that is, the advance / retreat action by a force such as hydraulic pressure. Reference numeral 22 denotes a tube connecting portion for connecting the advance / retreat means 21 and 21 to a hydraulic pump.
[0026]
As the advancing / retreating means 21, in addition to the hydraulic cylinder mechanism such as the hydraulic jack described above, the object is pushed or pulled with a strong force by using a mechanical rotary screw jack, chain block or other mechanical action. Various advancing and retreating means that can be moved can be used. In practice, it is preferable to use the above hydraulic cylinder mechanism, in particular, hydraulic jack means.
[0027]
Note that the confirmation plate 30 shown in FIG. 5 has a space where the stop cock 3 can be removed around the cable 4 extending from the stop cock 3 in the manhole 1 or the like, that is, the extraction tool 10 described above. This is for confirming the presence or absence of a space in which the screw can be set, and further confirming the screwing insertion position of the pulling screw member 5 into the water stop cock 3. The confirmation plate 30 has a cable insertion hole 31 partially opened to the outside at the center thereof, and the position of the engagement hole 13 of the engagement member 11 around the insertion hole 31. A hole 32 is provided so as to be able to set the screwing position by marking the check plate 30 against the water stopcock 3 and marking from the hole 32.
[0028]
Moreover, the guide member 40 shown in FIG. 6 is used when screwing the screw member 5 for pulling out the water stopper 3 into the water stop cock 3, Inside A guide pipe 42 through which the screw-in member 5 can be inserted projects from and protrudes through a support plate 41 that comes into contact with the wall surface 1 a and the water stop cock 3. Reference numeral 43 denotes a gripping portion protruding from the support plate 41.
[0029]
Next, a method for removing the water stop cock 3 attached to the mouth portion 2a of the pipe line 2 using the first removing device A1 will be described with reference to FIGS.
[0030]
First, The inner wall of a manhole or a cave, for example manhole 1 On the wall surface 1a, a pull-out screwing member 5 is screwed into a predetermined position with respect to the water stop cock 3 exposed from the mouth 2a of the pipe line 2. At this time, if necessary, the confirmation plate 30 is used, and the confirmation plate 30 is pulled out from the hole 32 with the notch opening side facing the stop cock 3 in the direction in which the cable 4 is bent. Marking is performed at a position corresponding to the engagement hole 13 of the engagement member 11 of the tool 10.
[0031]
Then, the leading end 5a of the extraction screwing member 5 made of a screw rod is pierced into the marking position, and the substantially entire length of the spiral portion 6 is screwed and inserted so as to be rotated using a bolt wrench (FIG. 7). At this time, by using the guide member 40, the screwing member 5 for drawing is inserted into the guide pipe 42 and screwed in while restricting the inclination and distortion at the time of screwing.
[0032]
In addition, when the guide member 40 cannot be used due to the influence of surrounding existing cables or the like, the drawing bolt 5 is screwed and inserted obliquely outward so as not to be screwed in the axial direction where the existing cable 4 exists. To do.
[0033]
In this way, the extraction tool 10 is set in an engagement state where it can be extracted with respect to the extraction screwing member 5. That is, the pulling tool 10 is arranged so that the reaction force receiving plate 15 side is inner wall On the surface 1a side, the engagement member 11 having a substantially U shape is fitted to the cable 4 extending from the water stopcock 3 and the notch opening side of the reaction force receiving plate 15, and the screwing member 5 is fitted. Is passed from the cable insertion portion 16 at the center of the reaction force receiving plate 15 to the engagement hole portion 13 of the engagement member 11, and the plurality of leg members 17 of the reaction force receiving plate 15 are moved. Inside An advancing / retreating means 21 comprising an axial movement means 20, that is, a hydraulic cylinder mechanism or the like is brought into contact with the wall surface 1 a. Inside Adjust so that it is substantially perpendicular to the wall surface, inner wall A predetermined space is secured between the surface 1a (FIG. 8).
[0034]
Next, a nut 7 as an engaging means is screwed into the pulling-in screw-in member 5 and engaged with the engaging member 11. Then, the hydraulic advance / retreat means 21 and 21 as the axial movement means 20 are operated, and the engaging member 11 is separated from the reaction force receiving plate 15 by the advance operation (chain line in FIG. 8). At this time, the reaction force receiving plate 15 passes through the leg member 17 to inner wall The engaging member 11 is in contact with the surface 1a. Inside Move away from the wall surface 1a. Along with this, a plurality of the screwing members 5 for pulling out which are engaged with the engaging member 11 are pulled out, and the water stopcock 3 into which the screwing member 5 is screwed is pulled out together with this. Become. The reaction force at this time is inner wall It is received by a reaction force receiving plate 15 that comes into contact with the surface 1a via a leg member. As a result, the stop cock 3 can be pulled out with a strong force such as hydraulic pressure. If the water stopcock 3 becomes loose in this way, it is pulled out by hand.
[0035]
In addition, when the strokes of the advance / retreat means 21 and 21 are short and cannot be pulled out to such an extent that the contact is loosened by one operation, the engagement member 11 is temporarily moved to the original position by the retreat operation of the advance / retreat means 21 and 21. After returning and engaging the engaging member 11 by changing the position of the nut 7 as the engaging means, the advancement / retraction means 21 and 21 may be operated again in the same manner as described above, and the above-mentioned stopping operation may be performed. The faucet 3 can be easily and completely pulled out from the mouth 2a of the pipe line 2.
[0036]
After this pulling out, the nut 7 of the engaging means is removed from the screwing member 5 for pulling out, the engaging member 11 is pulled out from the screwing member 5 and the pulling tool 10 is removed. The pulled-out water stop cock 3 opens a crack part, removes it from the cable 4, and pulls out the screwed member 5 from the water stop cock 3. Since the water stop cock 3 can be pulled out with almost no damage, it can be reused.
[0037]
In the above embodiment, the engaging member 11 of the pulling tool 10 is connected to the manhole against the reaction force receiving plate 15. And the inner wall of the cave The engagement member 11 is arranged at a distance from the surface 1a at a distance and is detachably connected to the reaction force receiving plate 15 by advancing / retracting means 21 interposed therebetween. However, in addition to the above, the engaging member is moved in front of the reaction force receiving plate. Inner wall The engaging member is arranged on the side close to the surface and connected to the reaction force receiving plate so as to be movable in the approaching direction by advancing and retreating means such as a cylinder mechanism interposed therebetween. It can also be set as the structure which moves the said engagement member to the direction approaching a reaction force receiving plate by operation | movement, and pulls out a water stop cock.
[0038]
9 and 10 show an embodiment of the second water faucet removal device A2 according to the present invention. The removal device A2 will be described.
[0039]
This second water faucet removal device A2 is: The inner wall of a manhole or a cave, for example manhole 1 A plurality of screw nail-like screwing members 105 that can be screwed into the water stop cock 3 exposed from the pipe end on the wall surface 1a, and the screwing member 105 that engages with the screwing member 105 together with the screwing member 105 It comprises a pulling tool 110 for pulling out the water stop cock 3.
[0040]
As shown in FIG. 9, the screw-in member 105 has a sharp tip 106 a and a thread 106 formed on the outer periphery of a required length portion from the tip. A plate-like or hemispherical head 105b is formed as an engaging means, which will be described later, and is formed to be screwed into the stop cock 3 by a screwdriver or the like. Yes. Reference numeral 107 denotes a cylindrical guide member fitted to the screw-in member 105, and is provided so as to perform a guide function by being fitted into an engagement hole as will be described later. The guide member 107 is formed such that a half portion on the distal end side of the screw-in member 105 is slightly smaller in diameter. 107a shows the small diameter part.
[0041]
The extraction tool 110 includes an engagement member 111, a reaction force receiving plate 115, and an operation ring member 120 as an axial movement means.
[0042]
The engaging member 111 has a screw tube portion 112 into which the cable 4 can be inserted and a thread is formed on the outer periphery. Inner wall A flange portion 113 having substantially the same diameter as the outer periphery of the water stop cock 3 is provided at one end portion which becomes the surface side. The flange portion 113 is formed with a plurality of engagement hole portions 114 through which the plurality of screwing members 105 can be inserted and engaged, for example, at three locations at equal angular intervals in the circumferential direction. In the case of the figure, the engagement hole portion 114 is formed so that the small-diameter portion 107a of the guide member 107 can be fitted, and the head portion 105b of the screw-in member 105 is engaged through the guide member 107. Yes. Further, when the guide member 107 is fitted into the engagement hole portion 114, a guide action when the screw-in member 105 is screwed into the water stop cock 3 is achieved.
[0043]
The threaded cylindrical portion 112 of the engaging member 111 is partly opened in a circumferential direction including the flange portion 113 at one end thereof, and is cut open outward so that the cable 4 can pass therethrough. 112a shows the notch opening. Thereby, the engaging member 111 can be set in a state where the cable 4 is inserted into the screw tube portion 112. The thread on the outer periphery of the screw cylinder portion 112 is formed to be continuous through the notch opening 112a.
[0044]
Further, the reaction force receiving plate 115 has an opening 116 larger than the outer diameter of the screw tube portion 112 at the center of the plate body, and is loosely fitted to the screw tube portion 112 so as to be axially movable and as shown in the figure. On the outside of the flange 113 Inside It abuts against the wall surface 1a via a leg member, which will be described later, and receives a reaction force during the pulling operation. Therefore, in a plurality of locations on the peripheral edge that are outward from the flange portion, preferably in three or more locations, inner wall Bolts as leg members 117 that contact the surface 1a are attached by screwing means. In the case of the figure, the reaction force receiving plate 115 is formed of a rectangular plate body having vertical and horizontal dimensions larger than the diameter of the flange portion 113 and having an opening 116 in the center, and bolts as the leg members 117 are attached to the four corner portions. Has been. 118 is a nut for locking the bolt as the leg member 117; Inside The protruding length as the leg member can be adjusted by adjusting the position of the nut 118 and adjusting the position where the bolt is screwed and fixed according to the unevenness of the wall surface 1a.
[0045]
As the leg member 117, as in the case of the first embodiment of the first removing apparatus A1, Inside As long as a predetermined space required for the movement of the engaging member 111 and the pull-out of the stop cock 3 can be secured between the wall surface 1a and the wall surface 1a can be kept in contact with the wall 1a, it is not limited to the one using the bolt of the illustrated embodiment. However, various other implementations are possible.
[0046]
Similarly to the case of the engagement member 111 described above, the reaction force receiving plate 115 is also opened to the outside so that the cable 4 can pass through the central opening 116 at one side portion in the circumferential direction. Reference numeral 116a denotes the notch opening. Thereby, the cable 4 can be set in a state of being inserted through the opening 116.
[0047]
The operation ring member 120 has an incomplete ring shape in which a part of the ring shape is notched and opened outward, and a screw thread that engages with a screw thread on the outer periphery of the screw cylinder portion 112 is formed on the inner periphery thereof. Is formed. Reference numeral 121 denotes the notch opening. The operation ring member 120 is provided with the flange portion 113 of the reaction force receiving plate 115. Opposite side with Opposite side Abut the surface The screw cylinder portion 112 is engaged with the screw tube portion 112 at a position to be brought into contact with the reaction force receiving plate 115, and the screw tube portion 112 is engaged by a rotation operation in a state of being in contact with the reaction force receiving plate. The entire member 11 is provided so as to move in the axial direction, particularly in a direction in which the flange portion 113 is close to the reaction force receiving plate 115.
[0048]
That is, the combination of the screw cylinder portion 112, the reaction force receiving plate 115, and the operation ring member 120 constitutes an axial movement means by a screw feed mechanism that moves the engagement member 111 in the axial direction. The operation ring member 120 can be moved. The operation ring member 120 is provided with a handle 122 for the rotation operation.
[0049]
The operation ring member 120 is also configured so that the cable 4 can be passed through the notch opening 121 and screwed into the screw cylinder portion 112 to be set as described above.
[0050]
The engaging member 111 including the screw cylinder portion 112, the reaction force receiving plate 115, and the operation ring member 120 are notched open as described above, but the notch openings 112a and 116a of these members are provided. As shown in FIG. 10, 121 and 121 are assumed to have a degree that allows the cable 4 to pass at an opening angle of less than 180 ° at most. In particular, with respect to the operation ring member 120 and the screw cylinder portion 112, it is preferable to set the notch widths of the notch openings 121 and 112a so that the operation ring member 120 and the screw cylinder portion 112 are not detached even by a rotation operation of the operation ring member 120.
[0051]
Using this second removal device A2, In the inner wall surface of a manhole or a cave, for example, the inner wall surface 1a of the manhole 1, A method for removing the water stopcock 3 attached to the mouth portion 2a of the pipe line 2 will be described.
[0052]
First, as shown in FIG. 9, the engaging member 111 including the threaded cylindrical portion 112 of the extraction tool 110 is set around the cable 4 from the notch opening 112a, and in this state, the engaging member 111 is engaged. A screw-like screw-in member 105 is screwed into the water stop cock 3 exposed at the mouth 2 of the pipe line 2 through the hole 114. At this time, the small-diameter portion 107a of the guide member 107 fitted to the screwing member 105 is fitted into the engaging hole portion 114, and the screw is screwed in while restricting the inclination and distortion at the time of screwing. 105 b is engaged with the engagement hole 114 via the guide member 107.
[0053]
Next, the reaction force receiving plate 115 is loosely fitted to the outer periphery of the threaded cylindrical portion 112 of the engagement member 111 through the cable 4 from the notch opening 116 a, and the leg member 117 is flanged to the engagement member 111. Outside of section 113 Inner wall It abuts on the surface 1a. Then, after the reaction force receiving plate 115, the operation ring member 120 is screwed into the screw cylinder portion 112 through the cable 4 from the notch opening 121 and is brought into contact with the reaction force receiving plate 115.
[0054]
In this state, the operation ring member 120 is rotated by a handle 122 or the like, so that the screw cylinder portion 112 is inner wall An engaging member 111 that is pulled in the axial direction with respect to the reaction force receiving plate 115 that is in contact with the surface 1a, that is, the screwing member 105 is engaged with the reaction force receiving plate 115 as a base. Move axially away from Thereby, the water stopcock 3 in the mouth part 2a of the pipe line 2 is pulled out together with the screwed member 105 engaged with the engaging member 111 (chain line in FIG. 9). The reaction force at this time is Inside It can be received by the reaction force receiving plate 115 that contacts the wall surface 1a, and the stop cock 3 can be pulled out with a strong force using a screw feed mechanism. If the water stopcock 3 becomes loose in this way, it is pulled out by hand.
[0055]
After this drawing, the operation ring member 120 is removed from the screw cylinder portion 112, the reaction force receiving plate 115 is extracted, the screw-in member 105 is extracted from the water stop cock 3, and the water stop cock 3 is removed from the cable 4.
[0056]
Thus, even when using both the first and second removing devices, there is a risk that the water stopcock 3 attached to the mouth portion 2a of the conduit 2 may damage the cable 4 with a relatively strong force. However, it can be easily pulled out from the pipe line 2 and removed.
[0057]
The water faucet removal method and removal device using the above-described screw-in member and pull-out tool can also be applied to the removal of a water faucet from an empty pipe line through which no cable passes.
[0058]
【The invention's effect】
As described above, according to the water faucet removal device for pipes of the present invention, the water faucet attached to the mouth of the pipe is made to use a mechanical force such as hydraulic pressure or a screw feed mechanism. Therefore, it can be removed safely and easily in a short time without damaging the existing cable. In addition, the water stop cock can be reused.
[Brief description of the drawings]
FIG. 1 is a front view of a screwed member of a first removing device of the present invention.
FIG. 2 is a side view of the extraction tool of the first removal device of the same.
FIG. 3 is a front view of the same drawing tool.
FIG. 4 is a schematic perspective view of the same drawing tool.
FIG. 5 is a perspective view of a confirmation plate.
FIG. 6 is a perspective view of a guide member.
FIG. 7 is a cross-sectional explanatory view showing a screwed state of the screwed member with respect to the water stop cock.
FIG. 8 is a cross-sectional explanatory view at the time of a water faucet pulling operation by the apparatus same as above.
FIG. 9 is a cross-sectional explanatory view taken along line XX of FIG. 10 during a pulling operation by the second removing apparatus of the present invention.
FIG. 10 is a front view of the apparatus.
FIG. 11 is a schematic cross-sectional view showing an attached state of a water stop cock for a pipeline.
FIG. 12 is a front view of a water stop cock for a pipeline.
[Explanation of symbols]
A1, A2 Pipe stop valve removal device
1 Manhole
1a inner wall surface
2 pipeline
2a mouth
3 stopcock
4 Cable
5 Screwed members
5a Tip
6 Spiral part
7 Nut
8 Screw part
10 Pulling tool
11 Engagement member
12 Cable insertion part
12a Notch opening
13 engagement hole
15 Reaction force receiving plate
16 Cable insertion part
17 Leg members
20 Axial moving means
21 Advancement and retreat means
30 Confirmation board
40 Guide member
41 Support plate
42 Guide pipe
105 Screwed member
105a Tip
106 Screw
107 Guide member
110 Extractor
111 engaging member
112 Screw cylinder
112a Notch opening
13 Flange
114 engagement hole
115 Reaction force receiving plate
116 opening
117 Leg member
120 Operation ring member
121 Notch opening
122 Handle

Claims (5)

A removal device for removing a water tap for a pipe attached to a mouth of a cable pipe in a manhole or a sinus,
None screwable spiral with respect to the stop cock of required length from the distal end is exposed to the inner wall surface of the manhole or sinus tract, and a plurality of consisting of a threaded rod provided with engagement means at the other end A drawing-in screw member, and a drawing tool for pulling out the water stop valve together with the screw-in member,
A plurality said withdrawal device comprises a engaging member having an engaging hole in which the engaging means can inserting the threaded member of a plurality of can engage, contact with the inner wall surface projects toward the side of the inner wall surface A reaction force receiving plate having a leg member is disposed at a required interval in the pulling-out direction of the water stop cock, and the advancing / retreating direction is stopped between both the engaging member and the reaction force receiving plate. Both ends of the stopper are connected by the advancing / retreating means connected in the pulling-out direction and connected to the engaging member and the reaction force receiving plate, and the engaging member is connected to the reaction force receiving plate by the operation of the advancing / retreating means. The engagement member and the reaction force receiving plate are provided so as to be separated or accessible, and the insertion portions of the cables extending from the water faucet are partially formed in a cutout opening outward. Pipe stop valve removal device. The engaging member is disposed on the side farther from the inner wall surface with respect to the reaction force receiving plate at an interval, and the advancing / retracting means interposed between the engaging member and the reaction force receiving plate is provided. 2. The pipe stop according to claim 1, wherein the engagement member is provided so as to move in a direction away from the reaction force receiving plate by operation, and the stop cock is pulled out by movement in the separation direction. Faucet removal device. The apparatus for removing a water stop cock for a pipe according to claim 1 or 2, wherein the advancing / retreating means for moving the engagement member is a reciprocating means comprising either a cylinder mechanism or a jacking means by hydraulic pressure such as hydraulic pressure. A removal device for removing a water tap for a pipe attached to a mouth of a cable pipe in a manhole or a sinus,
And threaded member of the manhole or can screwed to the stop cock exposed to the inner wall surface of the sinus tract, and for withdrawal of the threaded nail like plurality of having an engagement means on the rear end portion, said threaded member And a pull-out tool for pulling out the stop cock,
The pulling tool has a screw tube portion into which a cable can be inserted and a screw is formed on the outer periphery, and the plurality of screw-in members are provided on a flange portion provided at an end portion on the inner wall surface side of the screw tube portion. An engagement member provided with an engagement hole that can be inserted and engaged with the engagement means;
A plurality of leg members that are loosely fitted to the screw cylinder portion so as to be axially movable so as to face the flange portion and project toward the inner wall surface outside the flange portion are provided via the leg members. a reaction force receiving plate is brought into contact with the inner wall surface Te,
Wherein by rotation in a state in which contact with the screwed in and the reaction force receiving plate to the threaded cylindrical portion at a position where it comes into contact with the opposite side face to the opposite side surfaces of the flange portion of the reaction force receiving plate An operating ring member that moves the engagement member in the axial direction based on a reaction force receiving plate;
The engagement member including the screw cylinder portion, the reaction force receiving plate, and the operation ring member are each formed by opening a cutout outward so that a cable can pass in a part of the circumferential direction. Pipe stop valve removal device. A plurality of leg members of the reaction force receiving plate that abuts on the inner wall surface are bolts that are screwed into the reaction force receiving plate, and the protruding length is adjusted by adjusting the screwing position of the bolt. The apparatus for removing a water stop cock for a pipe according to any one of claims 1 to 4, wherein the apparatus is provided so as to be able to.

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