JP2010105062A - Tube separating device, tube joining device, and tube attaching/detaching device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reliably prevent a first attaching body from being displaced from a spigot tube part, and to efficiently and easily perform a tube installation/removal operation at site. <P>SOLUTION: A gripping device 4 for gripping the outer peripheral surface of the spigot tube part 2 is provided to the first mounting body 3 attached to the spigot tube part 2 detachably from the tube radial direction. A cylinder mounting part 7 which engages and holds a hydraulic cylinder C for providing a separating force to both tube parts 1, 2 through the gripping device 4 in the gripping state in a predetermined attitude detachably from the reaction force receiving direction and a pressure receiving part 8 which is brought into contact with the spigot tube part 1 from the tube axis X direction when both tube parts 1, 2 are separated by the hydraulic cylinder C are provided to a second mounting body 5 attached to the spigot tube part 1 detachably from the tube radial direction. A locking part 10 which is allowed to come into contact with the gripping device 4 from the tube axis X direction and which changes over the gripping device 4 in the gripping state when the piston rod 9 of the hydraulic cylinder C in the contact state is extended is provided to the piston rod 9. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  For example, the present invention is formed in another fluid pipe or fluid device with respect to a fluid pipe such as a water pipe or a gas pipe or a receiving pipe portion formed in a fluid device such as a gate valve or an air valve. At least a pipe joining function for inserting and connecting the insertion pipe part from the pipe axis direction, or a pipe detaching function for drawing and separating (disassembling) the connected receiving pipe part and insertion pipe part along the pipe axis direction. The present invention relates to a pipe detachment apparatus, a pipe joining apparatus, and a pipe detaching apparatus.

  As a pipe detachment device having the pipe joining function and the pipe detachment function, for example, as shown in Patent Document 1 below, it is detachable from the pipe diameter direction with respect to the insertion pipe part that can be inserted and connected to the receiving pipe part. A recess is formed in the first mounting body to be mounted on the outer peripheral surface of the insertion tube portion to be fitted from the outer side in the tube radial direction.

  The second mounting body, which is detachably attached to the receiving pipe portion from the pipe radial direction, is capable of contacting the opening side end surface of the receiving pipe portion from one side in the tube axis direction. 1 engagement surface and the 2nd engagement surface which can contact | abut from the other side of a pipe axis direction with respect to the level | step-difference location of the large diameter pipe part and small diameter pipe part in the outer peripheral surface of a receiving pipe part are formed. At the same time, both ends of the second mounting body in the pipe circumferential direction are provided with fastening fixtures that detachably fasten both ends of the cylinder tube of the fluid pressure cylinder in a posture along the pipe axis direction.

  Two male screw portions formed on the tip end side of the piston rod of both the fluid pressure cylinders are passed through the connection holes formed in the first mounting body and screwed into the male screw portions of the piston rods. There has been proposed a structure in which the first mounting body is clamped and fixed by a nut.

  Moreover, as a pipe joining apparatus provided with the said pipe joining function, as shown, for example in the following patent document 2, it attaches | detaches to the insertion pipe part insertable and connectable to a receiving pipe part from a pipe radial direction so that attachment or detachment is possible. It is possible to switch between the state where the outer peripheral surface of the insertion tube part is held and the state where the holding is released by swinging around the axis perpendicular to the pipe axis direction on both sides in the pipe circumferential direction of the first mounting body. Provide a holding arm.

  The second mounting body, which is detachably attached to the receiving pipe portion from the pipe radial direction, has a pipe axis with respect to a step portion between the large diameter pipe portion and the small diameter pipe portion on the outer peripheral surface of the receiving pipe portion. An engaging surface that can be contacted from the core direction is formed, and a first connecting portion provided at a rear end of a cylinder tube of the fluid pressure cylinder is pivotally connected to both side portions in the pipe circumferential direction of the second mounting body. Provide a bracket.

  A second connecting portion pivotally connected to the other end of the holding arm is provided at the tip of the piston rod of each fluid pressure cylinder, and the holding arm is switched to the holding state by the contraction operation of both fluid pressure cylinders. At the same time, the held insertion tube portion is inserted and moved into the reception tube portion.

Japanese Utility Model Publication No. 51-111381 JP 7-42876 A

  In the conventional tube desorbing device, the concave portion of the first mounting body is fitted to the protrusion formed on the outer peripheral surface of the insertion tube portion, and therefore the position of the first mounting body and the insertion tube portion in the tube axis direction Although displacement can be prevented, it cannot be used for the intubation tube portion where the protrusion is not provided.

  In addition, when installing the pipe detaching device, the both ends of the cylinder tube of the fluid pressure cylinder are fixed with the fastening fixtures on both sides in the pipe circumferential direction of the second mounting body that is sheathed on the receiving pipe part, and then the insertion pipe The tip end side of the piston rod of the fluid pressure cylinder is inserted into the connecting hole of the first mounting body, which is sheathed on the part, and the pipe circumference of the first mounting body by two nuts screwed to the male thread portion of each piston rod It is necessary to hold and fix both sides of the direction, and when removing the pipe detaching device, a lot of similar work processes are necessary, and the assembly and removal work at the construction site becomes complicated, and many There was a problem that took time.

  In the conventional pipe joining device, the first connecting part provided at the rear end of the cylinder tube of the fluid pressure cylinder is pivoted to each of the brackets provided on both sides in the pipe circumferential direction of the second mounting body that is sheathed on the receiving pipe part. A second connection provided at the tip of the piston rod of each fluid pressure cylinder at the other end of the gripping arm on both sides in the pipe circumferential direction of the first mounting body that is externally connected to the insertion tube. It is necessary to pivotally connect the parts, and also when removing the pipe joining device, many similar work processes are required, which complicates the assembly and removal work at the construction site and requires a lot of labor. There was a problem that required.

  The present invention has been made in view of the above circumstances, and the main problem is that even when the outer diameter of the insertion tube portion is slightly changed, the first mounting body is displaced relative to the insertion tube portion. The present invention is to provide a pipe detaching device, a pipe joining device, and a pipe detaching device that can reliably prevent assembly and can perform assembly and removal work at a construction site efficiently and easily.

  According to a first characteristic configuration of the present invention, in the tube detaching device, the insertion port is provided in a first mounting body that is detachably mounted from a tube diameter direction to an insertion tube portion that can be inserted and connected to the receiving tube portion. A gripping device capable of switching between a gripping state and a gripping release state is provided, and a second mounting body that is detachably mounted on the receiving tube portion from the tube diameter direction. A cylinder mounting portion that engages and holds a fluid pressure cylinder that applies a detachment force to both pipe portions via a gripping tool in a gripping state in a predetermined posture so as to be detachable from the reaction force receiving direction, and both of the fluid pressure cylinders. A reaction force receiving portion that abuts the receiving tube portion from the tube axis direction when the tube portion is moved away is provided, and the piston rod of the fluid pressure cylinder is abutted against the holding tool from the tube axis direction. The piston rod is free to contact and in the contact state. Lies in engaging portion to changeover operation the pinching member to the pinching state with the long movement is provided.

  According to the above characteristic configuration, when assembling the tube detaching device, the first mounting body having a holding tool is mounted on the insertion tube portion from the tube radial direction, and the cylinder is mounted on the receiving tube portion. After mounting the second mounting body having the portion and the reaction force receiving portion from the pipe radial direction, the cylinder mounting portion of the second mounting body is simply engaged and held in a predetermined posture from the reaction force receiving direction by the cylinder mounting portion. Just do it.

  When the piston rod of the fluid pressure cylinder is extended and operated in this state, the locking portion provided on the piston rod comes into contact with and presses against the holding tool provided on the first mounting body from the tube axis direction, The fluid pressure cylinder is pressed into contact with the cylinder mounting portion of the second mounting body by the reaction force, and the reaction force receiving portion of the second mounting body is pressed into contact with the receiving pipe portion from the tube axis direction. The holding tool of the mounting body is switched to the holding state, and a separation moving force is applied to the insertion tube portion and the receiving tube portion via the holding device.

  Therefore, it is possible to adopt a simple mounting method such as dropping mounting of the first and second mounting bodies and insertion mounting of the hydraulic cylinder, and only to bring the locking portion of the piston rod into contact with the gripping tool. While using a holding tool that can be securely held and fixed even if the outer diameter of the intubation tube changes slightly, the number of work processes is reduced compared to the conventional method, and assembling of the pipe detachment device at the construction site Removal work can be performed efficiently and easily.

  According to a second characteristic configuration of the present invention, there is provided a tubular attachment member having an annular flange protruding from a cylinder tube of the fluid pressure cylinder in the pipe detaching device having the first characteristic configuration described above. Is mounted on the cylinder mounting portion, the mounting cylinder portion of the mounting member can be inserted in a sliding contact state from the tube axis direction, and one opening edge side of the mounting through hole. And a fitting recess for receiving and holding the flange portion of the mounting member in a fitting state so as to be detachable from the reaction force receiving direction, and the cylinder tube having a diameter with respect to the mounting through hole and the fitting recess. An opening that can be mounted from the outside in the direction is formed.

  According to the above characteristic configuration, the mounting cylinder portion of the mounting member that is externally fixed to the cylinder tube is in sliding contact from the reaction force receiving direction with respect to the mounting through hole formed in the cylinder mounting portion of the second mounting body. By inserting, the fluid pressure cylinder can be temporarily held in a predetermined posture, and the flange portion of the mounting member is received by a reaction force in a fitting recess formed on one opening edge side of the mounting through hole. In the state of being fitted from the direction, the reaction force accompanying the extension operation of the piston rod can be received strongly on the fitting surface.

  In addition, since the intermediate portion of the cylinder tube can be mounted from the radially outer side into the mounting through hole and the fitting recess through the opening formed in the cylinder mounting portion, it is necessary to insert the cylinder tube from one end side of the cylinder tube. In addition, it is possible to promote the efficiency and simplification of the assembly / removal work of the pipe detachment device at the construction site.

  According to a third characteristic configuration of the present invention, in the pipe detaching device having the second characteristic configuration described above, the flange portion is formed in the fitting recess of the cylinder mounting portion on the outer peripheral surface of the mounting cylinder portion of the mounting member. A retaining protrusion is provided that faces the other opening edge of the mounting through-hole in a state where it is received and held, and the retaining protrusion faces the opening in the direction of the tube axis. It is in the point comprised by the magnitude | size which can pass and move along.

According to the above characteristic configuration, in a state where the flange portion of the mounting member is fitted in the fitting recess of the cylinder mounting portion, the retaining protrusion provided on the outer peripheral surface of the mounting cylinder portion of the mounting member is not attached to the mounting through hole. Since it faces in a state where it can come into contact with the other opening edge side, the cylinder mounting of the second mounting body is carried out even under the condition that the receiving tube portion is inclined in a state where the inlet tube portion is lowered toward the insertion tube portion side. It is possible to prevent the fluid pressure cylinder attached to the part from falling off due to vibration or the like.
If the fluid pressure cylinder mounted on the cylinder mounting portion of the second mounting body is operated to rotate so that the retaining protrusion corresponds to the opening width of the opening of the cylinder mounting portion, this retaining Since the protrusion can be freely moved in the tube axis direction through the opening of the cylinder mounting portion, the effect of the above-described second characteristic configuration is not hindered.

  According to a fourth characteristic configuration of the present invention, in the tube detachment device having any one of the first to third characteristic configurations described above, two points in the tube circumferential direction of the insertion tube portion are provided on the first mounting body. A tube abutting portion that abuts the tube and a first fastener that holds and fixes the first mounting body to the insertion tube portion by a tightening operation from the side substantially facing the tube abutting portion in the tube radial direction. In addition, the second mounting body includes a tube contact portion that contacts two points in the tube circumferential direction of the receiving tube portion, and a side substantially facing the tube contact portion in the tube radial direction. There is a point that a second fastener is provided for retaining and fixing the second mounting body to the receiving tube portion by the tightening operation.

According to the above characteristic configuration, the first attachment body and the second attachment body attached to the insertion tube portion and the reception tube portion are prevented from falling off by tightening and fixing the first fastener and the second fastener. In addition, each of the first mounting body and the second mounting body abuts the insertion tube portion and the receiving tube portion at two points of the both tube abutting portions. Even if it fluctuates, it can be mounted and fixed stably.
In addition, for example, each of the tube contact surface of the first mounting body and the tube contact surface of the second mounting body is formed in an arcuate surface based on the tube diameter of the maximum outer diameter centered on the tube axis. When the outer diameter of the insertion tube portion and the receiving tube portion is smaller than the maximum outer diameter, one fastener of the first mounting body and the second mounting body is slightly tightened more than the other. Then, the first mounting body and the second mounting body tilt with respect to the insertion tube portion and the receiving tube portion.

  However, in the present invention, as described above, each of the first mounting body and the second mounting body abuts the insertion tube portion and the receiving tube portion at two points of the both tube contact portions. And even if one fastener of the second mounting body is operated to be slightly tightened more than the other, the first mounting body and the second mounting body do not tilt with respect to the insertion tube portion and the receiving tube portion, It is possible to suppress malfunctions and detachment errors caused by fluctuations in the relative mounting postures of the first and second mounting bodies.

  According to a fifth characteristic configuration of the present invention, in the pipe joining device, the first attachment body that is detachably attached to the insertion tube portion that can be inserted and connected to the reception tube portion from the tube radial direction is provided on the insertion device. A second mounting body that is provided with a gripping tool that can be switched between a gripping state and a gripping release state, and that is detachably mounted on the receiving pipe part from the pipe radial direction. Includes a cylinder mounting portion that engages and holds a fluid pressure cylinder that applies joint movement force to both pipe portions via a gripping tool in a gripping state in a predetermined posture so as to be detachable from the reaction force receiving direction, and the fluid pressure cylinder. A reaction force receiving portion that abuts on the receiving tube portion from the tube axis direction at the time of joint movement of both the tube portions is provided, and the piston rod of the fluid pressure cylinder is disposed on the holding tool from the tube axis direction. Piston rod that can be contacted and in contact It lies in engaging portion to changeover operation the pinching member to the pinching state with the contraction movement is provided.

  According to the above characteristic configuration, when assembling the pipe joining device, the first mounting body having a holding tool is mounted on the insertion tube portion from the tube radial direction, and the cylinder is mounted on the receiving tube portion. After mounting the second mounting body having the portion and the reaction force receiving portion from the pipe radial direction, the cylinder mounting portion of the second mounting body is simply engaged and held in a predetermined posture from the reaction force receiving direction by the cylinder mounting portion. Just do it.

  When the piston rod of the fluid pressure cylinder is contracted and operated in this state, the engaging portion provided on the piston rod comes into contact with the gripping tool mounted on the first mounting body from the tube axis direction and is drawn. With the reaction force, the fluid pressure cylinder is pressed against the cylinder mounting portion of the second mounting body, and the reaction force receiving portion of the second mounting body is pressed against the receiving pipe portion from the tube axis direction, The holding tool of the mounting body is switched to the holding state, and a joining movement force is applied to the insertion tube portion and the receiving tube portion through the holding device.

  Therefore, it is possible to adopt a simple mounting method such as dropping mounting of the first and second mounting bodies and insertion mounting of the hydraulic cylinder, and only to bring the locking portion of the piston rod into contact with the gripping tool. While using a holding tool that can be securely held and fixed even when the outer diameter of the intubation tube changes slightly, the number of work processes is reduced compared to the conventional method, and assembly of pipe joining devices at the construction site Removal work can be performed efficiently and easily.

  According to a sixth characteristic configuration of the present invention, in the pipe detaching device, the first attachment body, which is detachably attached to the insertion tube portion that can be inserted and connected to the receiving tube portion from the tube radial direction, is provided on the insertion device. A second mounting body that is provided with a gripping tool that can be switched between a gripping state and a gripping release state, and that is detachably mounted on the receiving pipe part from the pipe radial direction. A cylinder mounting portion that engages and holds a fluid pressure cylinder that applies a detachment movement force or a joint movement force to both pipe portions via a holding tool in a holding state in a predetermined posture so as to be detachable from a reaction force receiving direction; A reaction force receiving portion that comes into contact with the receiving tube portion from the direction of the tube axis when the detachment movement or joining movement of both pipe portions by the fluid pressure cylinder is provided, and the gripping tool is provided on the piston rod of the fluid pressure cylinder Can be freely contacted from the tube axis direction and Lies in engaging portion to changeover operation the pinching member to the pinching state with the extension movement or contraction movement of the piston rod in a contact state is provided.

  According to the above-mentioned characteristic configuration, when assembling the tube attachment / detachment device to the insertion tube portion and the reception tube portion to be separated, the first mounting body provided with the gripping device is extended with the piston rod of the fluid pressure cylinder. A second mounting body having a cylinder mounting portion and a reaction force receiving portion is attached to the insertion tube portion from the tube radial direction in an orientation in which the holding tool is held by operation. After mounting from the direction, it is only necessary to engage and hold the fluid pressure cylinder in a predetermined posture from the reaction force receiving direction on the cylinder mounting portion of the second mounting body.

  When the piston rod of the fluid pressure cylinder is extended and operated in this state, the locking portion provided on the piston rod comes into contact with and presses against the holding tool provided on the first mounting body from the tube axis direction, The fluid pressure cylinder is pressed into contact with the cylinder mounting portion of the second mounting body by the reaction force, and the reaction force receiving portion of the second mounting body is pressed into contact with the receiving pipe portion from the tube axis direction. The holding tool of the mounting body is switched to the holding state, and a separation moving force is applied to the insertion tube portion and the receiving tube portion via the holding device.

  Further, in the case of assembling the tube attachment / detachment device to the insertion tube portion and the receiving tube portion to be joined, the first attachment body having the holding device is attached to the holding device by the contraction operation of the piston rod of the fluid pressure cylinder. Attaching the second mounting body having a cylinder mounting portion and a reaction force receiving portion from the tube diameter direction to the insertion tube portion from the tube diameter direction in a holding posture orientation. It is only necessary to engage and hold the fluid pressure cylinder in a predetermined posture from the reaction force receiving direction on the cylinder mounting portion of the second mounting body.

  When the piston rod of the fluid pressure cylinder is contracted and operated in this state, the engaging portion provided on the piston rod comes into contact with the gripping tool mounted on the first mounting body from the tube axis direction and is drawn. With the reaction force, the fluid pressure cylinder is pressed against the cylinder mounting portion of the second mounting body, and the reaction force receiving portion of the second mounting body is pressed against the receiving pipe portion from the tube axis direction, The holding tool of the mounting body is switched to the holding state, and a joining movement force is applied to the insertion tube portion and the receiving tube portion through the holding device.

  Therefore, it is possible to adopt a simple mounting method such as dropping mounting of the first and second mounting bodies and insertion mounting of the hydraulic cylinder, and only to bring the locking portion of the piston rod into contact with the gripping tool. While using a holding tool that can be securely held and fixed even when the outer diameter of the intubation tube changes slightly, the number of work processes is reduced compared to the conventional method. Removal work can be performed efficiently and easily.

[First Embodiment]
FIGS. 1-8 is with respect to the receiving pipe part 1 of one fluid pipe P among the fluid pipes P, such as a water pipe and a gas pipe comprised using a cast iron pipe, a steel pipe, or a vinyl chloride pipe. In a pipe joint structure in which the insertion tube portion 2 of another fluid pipe P is inserted and connected from the tube axis X direction, the receiving tube portion 1 and the insertion tube portion 2 are pulled out along the tube axis X direction. The pipe detachment device of the present invention used when separating (disassembling) is shown.

  To constitute this pipe detachment device, a metal (such as a general structural rolled steel) that is detachably attached to the insertion pipe part 2 inserted and connected to the reception pipe part 1 from the pipe radial direction. Each of the both sides in the tube circumferential direction of the first mounting body 3 is provided with a gripping tool 4 that can be switched between a gripping state and a grip releasing state of the outer peripheral surface 2a of the insertion tube portion 2, and the receiving port The holding part which is switched to the holding state is operated on both sides in the pipe circumferential direction of the second mounting body 5 made of metal (made of rolled steel for general structure, etc.) which is detachably attached to the pipe part 1 from the pipe radial direction. A cylinder mounting portion 7 that engages and holds (inserts and holds) a pair of fluid pressure cylinders C that apply detachment force to both pipe portions 1 and 2 via a tool 4 in a predetermined posture so as to be detachable from the reaction force receiving direction; , When the both pipe portions 1 and 2 are separated and moved by the extension operation of the fluid pressure cylinder C, A reaction force receiving portion 8 that contacts the mouth tube portion 1 from the tube axis X direction is provided, and the piston rod 9 of the fluid pressure cylinder C can freely contact the holding tool 4 from the tube axis X direction. And the latching | locking part 10 which switches the holding tool 4 to a holding state with the expansion | extension movement of the piston rod 9 in the contact state, ie, the press movement by the piston rod 9 in the pipe-axis X direction, Is provided.

  As the fluid pressure cylinder C, there is a single-acting hydraulic cylinder that is extended by pressure oil supplied from the hydraulic pump 13 and contracted by an elastic restoring force of a spring (not shown) built in the cylinder tube 6. A cylindrical metal (made of carbon steel for machine structure, etc.) having an annular flange 11B projecting on the male thread portion 6a formed on the distal end side of the outer peripheral surface of the cylinder tube 6 is used. The attachment member 11 is screwed and fixed in the exterior state.

  Each cylinder mounting portion 7 of the second mounting body 5 has a mounting through-hole 7A in which the mounting cylinder portion 11A of the mounting member 11 can be inserted in a sliding contact state from the tube axis X direction, and the mounting through-hole 7A. A fitting recess 7B that receives and holds the flange portion 11B of the mounting member 11 in a fitting state so as to be detachable from the reaction force receiving direction on one opening edge side, and the mounting through hole 7A and the fitting recess 7B. An opening 7 </ b> C is formed in which an intermediate portion of the cylinder tube 6 can be mounted from the outside in the radial direction.

  Further, as shown in FIGS. 7 and 8, the inner diameter D1 of the mounting through hole 7A and the inner diameter D2 of the fitting recess 7B are the outer diameter D3 of the mounting cylinder portion 11A of the mounting member 11 and the outer diameter of the flange portion 11B. The opening width W of the opening 7C is larger than the outer diameter D5 of the cylinder tube 6 and smaller than the outer diameter D3 of the mounting cylinder portion 11A. It is configured.

  Then, with respect to the mounting through holes 7A formed in both cylinder mounting portions 7 of the second mounting body 5, the mounting cylinder portion 11A of the mounting member 11 that is externally fixed to the cylinder tube 6 is placed in the reaction force receiving direction (insertion). The hydraulic cylinder C can be temporarily held in a predetermined posture parallel to the tube axis X direction by inserting and inserting from the side of the mouth tube portion 2), and one open end of the mounting through-hole 7A. In a state where the flange portion 11B of the mounting member 11 is fitted from the reaction force receiving direction (the side where the inlet tube portion 2 is present) into the fitting recess 7B formed on the edge side, the hydraulic cylinder C on the fitting surface. The reaction force accompanying the extension operation of the piston rod 9 can be received strongly.

  Moreover, as shown in FIG. 3, the intermediate portion of the cylinder tube 6 can be mounted in the mounting through hole 7A and the fitting recess 7B from the outside in the radial direction through the opening 7C formed in the cylinder mounting portion 7. Therefore, it is not necessary to insert from the one end side of the cylinder tube 6 one by one, and the efficiency and simplification of the assembly / removal work of the pipe detachment device at the construction site can be promoted.

  On the outer peripheral surface of the mounting cylinder portion 11A of the mounting member 11, it projects radially outward with the same dimension as the outer diameter of the flange portion 11B, and the flange portion 11B is received by the fitting recess 7B of the cylinder mounting portion 7. In the fitted state in which the retaining projection 12 is held, a retaining projection 12 is formed that faces the other opening edge of the mounting through-hole 7A so as to be in contact with each other, and the retaining projection 12 is connected to the cylinder. The opening 7 </ b> C of the mounting portion 7 is configured to have a size capable of moving through the tube axis X direction. In other words, as shown in FIG. 8, the length L in the tube circumferential direction of the retaining projection 12 is configured to be smaller than the opening width W of the opening 7C.

  When the flange portion 11B of the mounting member 11 is fitted in the fitting recess 7B of the cylinder mounting portion 7, the retaining protrusion 12 provided on the outer peripheral surface of the mounting cylinder portion 11A of the mounting member 11 is mounted. Since it faces in the proximity state which can contact the other opening edge side of 7 A of through-holes, it is the conditions where the receiving pipe part 1 inclines in the state which becomes low, for example in the insertion pipe part 2 side. In addition, the hydraulic cylinder C mounted on the cylinder mounting portion 7 of the second mounting body 5 can be prevented from falling off due to vibration or the like.

  Still further, by rotating the hydraulic cylinder C mounted on the cylinder mounting portion 7 of the second mounting body 5 to a position where the retaining projection 12 corresponds to the opening width W of the opening 7C. Since the hydraulic cylinder C provided with the attachment member 11 can be freely slid in the tube axis X direction with respect to the cylinder mounting portion 7 of the second mounting body 5, the hydraulic cylinder using the opening 7C. A simple desorption operation of C can be maintained.

  The first mounting body 3 is configured in a substantially U shape when viewed from the tube axis X direction with the mounting space S1 with respect to the insertion tube portion 2, and the inner surface of the first mounting body 3 on the mounting space S1 side. In 3a, a trapezoidal first tube contact portion 15 is formed to project from two points displaced 90 degrees in the tube circumferential direction so as to contact two points in the tube circumferential direction of the insertion tube portion 2. The first mounting body 3 is inserted into both ends of the first mounting body 3 in the pipe circumferential direction by a tightening operation from the side substantially facing the first pipe contact portion 15 in the pipe radial direction. A first fastener 16 that is secured to 2 is secured.

  The first fastener 16 includes a nut 16A that is fixed to both ends in the pipe circumferential direction of the first mounting body 3, and a bolt 16B that is screwed to the nut 16A. By pressing and fixing to the first tube abutment portion 15, the first attachment body 3 attached to the insertion tube portion 2 is prevented from falling off and both the first tube contact portions of the first attachment body 3 are prevented. 15, the first attachment body 3 can be stably attached and fixed even if the outer diameter of the insertion tube portion 2 slightly changes.

  To constitute the gripping tool 4, a pair of upper and lower brackets 4A are fixed to each of both sides in the tube circumferential direction on one side of the first mounting body 3, and the insertion tube is placed between each pair of brackets 4A. A bolt 4C that allows a holding arm 4B having a number of holding projections 4a that can bite into the outer peripheral surface 2a of the portion 2 to swing around an axis perpendicular to the tube axis X of the insertion tube portion 2 And a locking projection 4b for the locking portion 10 provided at the tip of the piston rod 9 of the fluid pressure cylinder C is integrally formed at the tip of the holding arm 4B.

  The holding projection 4a of the holding arm 4B has a longer distance from the swing axis of the bolt 4C toward one end in the swinging direction, and with respect to the outer peripheral surface 2a of the inlet tube portion 2 as the holding arm 4B swings upright. It is comprised so that encroachment may become large.

  The second mounting body 5 is configured in a substantially U shape when viewed in the direction of the tube axis X with the mounting space S2 for the receiving pipe portion 1, and the inner surface of the second mounting body 5 on the mounting space S2 side. Is composed of a horizontal inner side surface 5a at the center of the left and right sides and an inclined inner side surface 5b that is inclined at a predetermined crossing angle (for example, about 129 degrees) on both the left and right sides of the horizontal inner side surface 5a. A second tube abutting portion 17 having a portion in contact with the outer circumferential surface of the receiving tube portion 1 and abutting against two points in the tube circumferential direction of the outer circumferential surface of the receiving tube portion 1 is formed. At both ends in the direction, a second fastener for securing and fixing the second mounting body 5 to the receiving tube portion 1 by a tightening operation from the side substantially facing the second tube contact portion 17 in the tube radial direction. 18 is provided.

  Similarly to the first fastener 16, the second fastener 18 includes nuts 18A fixed to both ends of the second mounting body 5 in the pipe circumferential direction and bolts 18B screwed to the nuts 18A. By pressing and fixing the receiving tube portion 1 to the second tube contact portion 17 on both inclined inner side surfaces 5b, the second mounting body 5 mounted on the receiving tube portion 1 is prevented from falling off. At the same time, since the two abutment parts 17 of the second attachment body 5 abut on the receiving pipe part 1 at two points, even if the outer diameter of the receiving pipe part 1 slightly changes, the second attachment body 5 Can be mounted and fixed stably.

  The reaction force receiving portion 8 is integrally formed at both ends in the pipe circumferential direction of the second mounting body 5 so as to be in contact with the annular end surface continuous with the peripheral edge of the receiving tube portion 1 from the tube axis X direction. ing.

  A male screw portion 10A that is screwed and fixed to a screw hole 9A formed at the tip of the piston rod 9 of the hydraulic cylinder C is formed at the base of the locking portion 10. A locking recess 10B that can be locked to the holding arm 4B from the tube axis X direction is formed on the front half side.

  The mounting cylinder 11A of the mounting member 11 is formed with a screw hole 11a for retaining and fixing a screwed portion between the male thread 6a of the cylinder tube 6 and the mounting cylinder 11A with a screw. A handle 19 is connected to the upper end of the first mounting body 3 and the upper end of the second mounting body 5, respectively.

  Conventionally, there are various types of pipe joint structures. However, the pipe joint structure illustrated in this embodiment has a receiving pipe portion 1 of one fluid pipe P and the other fluid pipe P as shown in FIG. When the two pipe parts 1 and 2 move relative to each other along the tube axis X direction between the tube insertion pipe part 2 and the tube insertion pipe part 2, they come into contact with each other from the tube axis X direction to prevent further detachment movement. Prevention means A, bending prevention means B for maintaining the receiving tube portion 1 and the insertion tube portion 2 in a coaxial core state, and the outer peripheral surface of the insertion tube portion 2 and the inner periphery of the reception tube portion 1 An annular synthetic rubber sealing material 14 capable of sealing (watertight) between the surfaces is provided.

  The disengagement prevention means A is constituted by an enlarged attachment side 20 formed in an annular mounting groove 20 formed on the inner peripheral surface of the receiving pipe portion 1 in a substantially C shape when viewed in the tube axis X direction. A metal lock ring 21 that is elastically deformable, and an elastic holding ring 22 that holds the lock ring 21 coaxially with the receiving tube portion 1 in a state in which the diameter-expanding deformation of the metal lock ring 21 is allowed. At the same time, at the tip of the outer peripheral surface 2a of the insertion tube portion 2, when both the tube portions 1 and 2 are moved relative to each other more than a certain amount due to an earthquake or non-uniform subsidence, the tube is moved relative to the lock ring 21. An annular retaining protrusion 23 is integrally formed so as to abut from the direction of the axis X and prevent further relative movement of the tube portions 1 and 2 beyond that.

  The bend preventing means B includes a synthetic resin bend preventing ring 24 that is elastically deformable to the diameter-reduced side until the bend restricting state in contact with the outer peripheral surface 2a of the inlet tube portion 2 on the receiving tube portion 1. A plurality of set bolts 25 are provided to press a plurality of locations in the circumferential direction of the bending prevention ring 24 inward in the tube diameter direction and reduce the diameter to a bending restricted state.

  Therefore, in this pipe joint structure, when the receiving pipe portion 1 and the insertion pipe portion 2 are pulled out and separated, the retaining projection 23 of the insertion pipe portion 2 is mounted in the mounting groove 20 of the receiving pipe portion 1. A plurality of narrow disassembling thin plates 26 having the same thickness as the retaining protrusion 23 or slightly thicker so as not to engage with the lock ring 21 is provided in the insertion tube. It is necessary to perform a prior operation for expanding the lock ring 21 to an inner diameter where the retaining projection 23 of the insertion tube portion 2 can be extracted by driving between the outer peripheral surface 2a of the portion 2 and the lock ring 21.

  Note that the present invention can be applied to pipe joint structures having various structures as described above, and is not limited to the pipe joint structure shown in FIG.

[Second Embodiment]
FIG. 9 and FIG. 10 show the pipe joining device of the present invention used when the receiving pipe part 1 and the insertion pipe part 2 are inserted and connected (joined) along the tube axis X direction.
To construct this pipe joining device, both sides in the pipe circumferential direction of the metal first mounting body 3 that is detachably mounted from the pipe radial direction to the insertion pipe part 2 inserted and connected to the receiving pipe part 1. The part is provided with a pair of gripping tools 4 that can be switched between a state in which the outer peripheral surface 2a of the insertion tube part 2 is gripped and a state in which the grip is released.

  Further, the both sides in the pipe circumferential direction of the second mounting body 5 made of metal, which is detachably attached to the receiving pipe part 1 from the pipe radial direction, are provided with a holding tool 4 which is operated to be switched to the holding state. A cylinder mounting portion 7 that engages and holds (inserts and holds) a pair of fluid pressure cylinders C that apply joint movement force to the pipe portions 1 and 2 in a predetermined posture so as to be detachable from the reaction force receiving direction, and the fluid pressure A reaction force receiving portion 8 is provided that contacts the receiving tube portion 1 from the direction of the tube axis X when the two tube portions 1 and 2 are joined and moved by the contraction operation of the cylinder C.

  The piston rod 9 of the fluid pressure cylinder C can be brought into contact with the gripper 4 from the direction of the tube axis X, and the contraction movement of the piston rod 9 in the contact state, that is, the piston rod 9 A second locking portion 29 is provided for switching the holding tool 4 to the holding state in accordance with the retraction movement in the tube axis X direction.

  As the fluid pressure cylinder C, a single-acting hydraulic cylinder is used as in the first embodiment, and the male thread portion 6a formed on the distal end side of the outer peripheral surface of the cylinder tube 6 has an annular flange portion. A cylindrical metal mounting member 11 projecting from 11B is screwed and fixed in an exterior state.

  In the case of this second embodiment, since the reaction force receiving direction is opposite to that of the first embodiment, the mounting member 11 is an end of the mounting tube portion 11A opposite to the side where the insertion tube portion 2 is present. It is attached to the male threaded portion 6a of the cylinder tube 6 with the flange portion 11B positioned at the portion.

  Each cylinder mounting portion 7 of the second mounting body 5 has the same configuration except that the cylinder mounting portion 7 is configured in the opposite direction to the first embodiment. The tool 4 is also the same as that described in the first embodiment, except that it is mounted in the opposite orientation with respect to the intubation tube portion 2.

  The second mounting body 5 is detachably mounted in the annular groove 30 formed in the large-diameter pipe portion on the outer peripheral surface of the receiving pipe portion 1 from the pipe radial direction. Of the step end faces 30a, 30b facing each other in the direction of the core X, both pipe portions have corners of the second mounting body 5 that can come into contact with the step end face 30a located on the opening side of the receiving port of the receiving tube portion 1. A reaction force receiving portion 8 is configured to abut against the receiving tube portion 1 from the tube axis X direction when 1 and 2 are moved.

The second locking portion 29 is formed at a substantially U-shaped locking arm portion 29A that can be engaged and disengaged with respect to the holding arm 4B from the pipe circumferential direction, and a tip portion of the piston rod 9 of the hydraulic cylinder C. A male screw portion 29B is formed to be screwed and fixed to the screw hole 9A.
In addition, since the other structure is the same as the structure demonstrated in 1st Embodiment, the same number is attached to the same structure location as 1st Embodiment, and the description is abbreviate | omitted.

[Third Embodiment]
FIG. 11 shows a function of drawing and separating (disassembling) the receiving tube portion 1 and the insertion tube portion 2 along the tube axis X direction, and the receiving tube portion 1 and the insertion tube portion 2 as the tube axis. The pipe | tube removal apparatus of this invention provided with the function to insert-connect (join) along the core X direction is shown.

  In order to constitute this pipe detaching device, the inlet pipe part 2 is provided on both sides in the pipe circumferential direction of the metal first mounting body 3 that is detachably attached to the inlet pipe part 2 from the pipe radial direction. A holding tool 4 is provided that can be switched between a holding state and a holding release state.

  Further, the both sides in the pipe circumferential direction of the second mounting body 5 made of metal, which is detachably attached to the receiving pipe part 1 from the pipe radial direction, are provided with a holding tool 4 which is operated to be switched to the holding state. A cylinder mounting portion 7 that engages and holds (inserts and holds) a pair of fluid pressure cylinders C that apply separation movement force or joint movement force to both pipe portions 1 and 2 in a predetermined posture so as to be detachable from the reaction force receiving direction, respectively. When the both pipe parts 1 and 2 are moved away from each other by the extension operation of the fluid pressure cylinder C, or when both the pipe parts 1 and 2 are moved by the contraction action of the fluid pressure cylinder C, the pipe shaft is connected to the receiving pipe part 1. A reaction force receiving portion 8 that abuts from the core X direction is provided.

  The piston rod 9 of the fluid pressure cylinder C can be brought into contact with the holding tool 4 from the direction of the tube axis X, and the piston rod 9 in the contacted state is expanded or contracted. The 1st latching | locking part 10 or the 2nd latching | locking part 29 which switches and operates the clamping tool 4 to a clamping state is provided.

  As the fluid pressure cylinder C, a single-acting hydraulic cylinder is used as in the first embodiment, and the male thread portion 6a formed on the distal end side of the outer peripheral surface of the cylinder tube 6 has an annular flange portion. A cylindrical metal attachment member 11 projecting from 11B is screwed and fixed in an exterior state so that it can be reversed and replaced.

  When the both pipe parts 1 and 2 are moved away from each other, as in the first embodiment, the cylinder tube is in a state in which the flange part 11B is located at the end of the attachment tube part 11A on the side where the insertion tube part 2 is present. 6 is attached to the male threaded portion 6a, and when both the tube portions 1 and 2 are joined and moved, the side where the insertion tube portion 2 is present in the mounting tube portion 11A is the same as in the second embodiment. It is attached to the male threaded portion 6a of the cylinder tube 6 in a state where the flange portion 11B is located at the opposite end.

  Each cylinder mounting portion 7 of the second mounting body 5 has a mounting through-hole 7A in which the mounting cylinder portion 11A of the mounting member 11 can be inserted in a sliding contact state from the tube axis X direction, and the mounting through-hole 7A. Both fitting recesses 7B for receiving and holding the flange portion 11B of the mounting member 11 in the fitted state so as to be detachable from the reaction force receiving direction at the time of detachment movement or contraction operation on both opening edge sides, and the mounting through hole An opening 7C is formed in which the cylinder tube 6 can be mounted from the outside in the radial direction with respect to 7A and both fitting recesses 7B.

  The reaction force receiving portion 8 is configured such that the one end portion in the tube axis direction of the second mounting body 5 has the receiving port when the both pipe portions 1 and 2 are moved away from each other by the extension operation of the fluid pressure cylinder C. A first reaction force receiving portion 8A that abuts from the tube axis X direction on an annular end surface that is continuous with the opening periphery of the tube portion 1 is integrally formed, and the other end in the tube axis direction of the second mounting body 5 is formed. The two pipes are detachable from the pipe radial direction with respect to the inside of the annular groove 30 formed in the large-diameter pipe portion on the outer peripheral surface of the receiving pipe part 1 and are contracted by the fluid pressure cylinder C. Of the step end faces 30a and 30b facing each other in the tube axis X direction of the annular groove 1A, the step end face 30a located on the receiving opening side of the receiving pipe part 1 is moved during the joining movement of the parts 1 and 2. The second reaction force receiving portion 8B that comes into contact with the tube axis X direction is integrally formed.

  The first locking portion 10 and the second locking portion 29 can be selectively replaced with respect to the piston rod 9 of the fluid pressure cylinder C, and the first locking portion 10 is moved when the both pipe portions 1 and 2 are detached. At the time of attachment and joining of both pipe parts 1 and 2, the second locking part 29 is attached.

  The first locking portion 10 includes a male screw portion 10A that is screwed and fixed to a screw hole 9A formed in a tip portion of the piston rod 9 of the hydraulic cylinder C, and the holding arm 4B from the tube axis X direction. A locking recess 10B that can be locked is formed.

The second locking portion 29 is formed at a substantially U-shaped locking arm portion 29A that can be engaged and disengaged with respect to the holding arm 4B from the pipe circumferential direction, and a tip end portion of the piston rod 9 of the hydraulic cylinder C. A male screw portion 29B is formed to be screwed and fixed to the screw hole 9A.

The first mounting body 3 and the holding device 4 are also the same as those described in the first embodiment or the second embodiment. It is attached to the insertion tube portion 2 in a state where the holding arm 4B is located on the side opposite to the side where the mouth tube portion 1 is present, and when the both tube portions 1 and 2 are joined, the reception tube in the first attachment body 3 is attached. The holding arm 4 </ b> B is attached to the insertion tube portion 2 in a state where the holding arm 4 </ b> B is positioned on the side surface of the portion 1.
Other configurations are the same as those described in the first embodiment or the second embodiment, and therefore, the same reference numerals as those in the first embodiment or the second embodiment are attached to the same components. The description thereof is omitted.

[Other Embodiments]
(1) In each of the above-described embodiments, the first mounting body 3 is formed in a semi-annular shape that can be mounted on the insertion tube portion 2 from the tube radial direction or a substantially semi-annular shape close thereto, and the second mounting body 3 The mounting body 5 is formed in a semi-annular shape that can be mounted on the receiving pipe portion 1 from the pipe radial direction or a substantially semi-annular shape close thereto, but at least one of the first mounting body 3 and the second mounting body 5 is formed. You may comprise from a rocking | fluctuating open / close type or the division | segmentation type | formula annular body which can be decomposed | disassembled into several parts in the circumferential direction.

  (2) The cylinder mounting portion 7 of the second mounting body 5 may be any configuration as long as the fluid pressure cylinder C can be engaged and held (inserted and held) in a predetermined posture so as to be detachable from the reaction force receiving direction. It may be configured in a structure.

  (3) The holding device 4 provided in the first mounting body 3 may be configured in any structure as long as it can be switched between a holding state and a holding release state of the outer peripheral surface 2a of the insertion tube portion 2. May be.

  (4) As the fluid pressure cylinder C, in each of the above-described embodiments, the fluid pressure cylinder C is extended by the pressure oil supplied from the hydraulic pump 13 and contracted by the elastic restoring force of a spring (not shown) built in the cylinder tube 6. Although the single-acting hydraulic cylinder to be operated is used, a double-acting hydraulic cylinder may be used, and an air cylinder or the like that is operated by air pressure may be used.

The partially notched top view of the whole pipe | tube removal apparatus which shows 1st Embodiment of this invention Overall side view of the tube detachment device Exploded perspective view of the entire tube detachment device Front view of the second mounting body Front view of the first wearing body Side view of the disassembled partly cutout before the fluid pressure cylinder is mounted on the cylinder mounting portion of the second mounting body Partially cutaway side view when the hydraulic cylinder is mounted on the cylinder mounting portion of the second mounting body Front view when the hydraulic cylinder is mounted on the cylinder mounting portion of the second mounting body The partially cutaway bottom view of the pipe | tube joining apparatus which shows 2nd Embodiment of this invention. The side view of the whole pipe | tube joining apparatus in 2nd Embodiment of this invention. The disassembled partly cutaway side view of the pipe detaching apparatus showing the third embodiment of the present invention

Explanation of symbols

C Fluid pressure cylinder 1 Receiving tube portion 2 Insertion tube portion 3 First mounting body 4 Holding portion 5 Second mounting body 6 Cylinder tube 7 Cylinder mounting portion 7A Mounting through hole 7B Fitting recess 7C Opening portion 8 Reaction force receiving portion 9 Piston rod 10 Locking part (first locking part)
11 attachment member 11A attachment cylinder part 11B collar part 15 pipe contact part (first pipe contact part)
16 1st fastener 17 Pipe contact part (2nd pipe contact part)
18 2nd fastener 29 2nd latching | locking part

Claims (6)

  The first mounting body, which is detachably mounted from the tube diameter direction to the insertion tube portion that can be inserted and connected to the receiving tube portion, holds the outer peripheral surface of the insertion tube portion in the holding release state. A switchable gripping tool is provided, and the second mounting body that is detachably mounted on the receiving pipe portion from the pipe diameter direction is detached from both pipe portions via the gripping tool in the gripped state. A cylinder mounting portion that engages and holds a fluid pressure cylinder that applies a moving force in a predetermined posture so as to be detachable from a reaction force receiving direction, and a pipe shaft that is connected to the receiving tube portion when the both pipe portions are separated by the fluid pressure cylinder. A reaction force receiving portion that abuts from the core direction is provided, and the piston rod of the fluid pressure cylinder is capable of abutting on the holding tool from the tube axis direction, and the piston rod in the abutting state is As the extension moves, the holding tool is switched to the holding state and activated. Tube withdrawal device engaging portion is provided.   The cylinder tube of the fluid pressure cylinder is externally fixed with a cylindrical mounting member having an annular flange projecting, and the mounting cylinder portion of the mounting member is connected to the cylinder mounting portion. A mounting through-hole that can be inserted in a sliding state from the core direction, and a fitting that receives and holds the flange portion of the mounting member in a fitted state so as to be detachable from the reaction force receiving direction on one opening edge side of the mounting through-hole. The pipe detachment device according to claim 1, wherein a fitting recess is formed, and an opening for mounting the cylinder tube from the radially outer side is formed in the mounting through hole and the fitting recess.   The outer peripheral surface of the mounting cylinder portion of the mounting member faces the other opening edge side of the mounting through hole in a state where the flange portion is received and held in the fitting recess of the cylinder mounting portion. The tube detachment device according to claim 2, wherein a retaining protrusion is formed, and the retaining protrusion is configured to have a size capable of moving through the opening along the tube axis direction.   The first mounting body includes a tube contact portion that contacts two points in the tube circumferential direction of the insertion tube portion, and a tightening operation from a side substantially facing the tube contact portion in the tube radial direction. A first fastener for retaining and fixing one attachment body to the insertion tube portion is provided, and the second attachment body is provided with a tube contact portion that contacts two points in the pipe circumferential direction of the receiving tube portion. And a second fastener for retaining and fixing the second mounting body to the receiving tube portion by a tightening operation from the side substantially facing the tube contact portion in the tube radial direction. 4. The tube detachment device according to any one of 3 above.   The first attachment body that is detachably attached to the insertion tube portion that can be inserted and connected to the reception tube portion from the tube diameter direction includes a state in which the outer peripheral surface of the insertion tube portion is held, and a holding release state. And a second mounting body that is detachably attached to the receiving pipe portion from the radial direction of the pipe, and is attached to both pipe portions via the holding fixture in the holding state. A cylinder mounting part that engages and holds a fluid pressure cylinder that applies a joining movement force in a predetermined posture so as to be detachable from the reaction force receiving direction, and a pipe that is connected to the receiving pipe part during joining movement of both pipe parts by the fluid pressure cylinder. A reaction force receiving portion that comes into contact with the axial direction is provided, and the piston rod of the fluid pressure cylinder is capable of coming into contact with the gripper from the axial direction of the tube and is in the contact state. The holding device is switched to the holding state as the contraction movement of the Tubing interface device engaging portion is provided that.   The first attachment body that is detachably attached to the insertion tube portion that can be inserted and connected to the reception tube portion from the tube diameter direction includes a state in which the outer peripheral surface of the insertion tube portion is held, and a holding release state. And a second mounting body that is detachably attached to the receiving pipe portion from the radial direction of the pipe, and is attached to both pipe portions via the holding fixture in the holding state. A cylinder mounting portion that engages and holds a fluid pressure cylinder that applies a disengagement moving force or a joining moving force in a predetermined posture so as to be detachable from the reaction force receiving direction, and when the both fluid pipes are detached or joined. A reaction force receiving portion that comes into contact with the receiving tube portion from the tube axis direction is provided, and the piston rod of the fluid pressure cylinder is capable of contacting the holding tool from the tube axis direction, and Extension or contraction movement of the piston rod in the contact state With tube desorber locking portion for switching operation are provided in the clamping state clamping device with.

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