JP4483600B2 - Pipe insertion and connection device - Google Patents

Description

  The present invention relates to a pipe insertion and connection device for inserting and connecting a socket to the lower end of an upstream pipe.

  Conventionally, pipe insertion and connection devices have been used to connect resin pipes such as hard vinyl chloride used in sewers, water distribution pipes, or civil engineering pipes.

  For example, in Patent Document 1, a pair of clamp devices on the fixed side and the moving side, and a moving clamp device on the moving side are moved in the axial direction of the pipe, each having a crimping body that holds the upper surface and both side surfaces of the pipe to be connected A clamp moving device, and the clamp moving device is configured by loosely fitting a return spring on the outer periphery of the pipe body and providing a hydraulic cylinder with a hydraulic pump and a hydraulic tank with an operating lever at the rear end. An insertion connection device is disclosed.

  In this device, the body of the hydraulic cylinder penetrates the through hole of the upper crimping body mounting member in the moving side clamping device, and the tip of the piston rod of the hydraulic cylinder is the upper crimping body attached to the fixed clamping device. It is connected to one side. Further, in this device, the tip of the tow rope with the rear end fixed is wound around the pulley of the clamp arm in the fixed-side clamp device facing the clamp arm to the hydraulic arm. It is fixed.

  On the other hand, in Patent Document 2, a lock attachment that can stop one end of a pipe drawing wire at the center of the inner diameter of the fixed-side pipe, and an edge of the moving-side pipe are attached and pushed into the center of the inner diameter of the pipe. There is disclosed a pipe insertion connecting device constituted by a pipe pushing fitting in which force is applied and a pushing device that fixes the other end of the pipe drawing wire and is connected to the pipe pushing fitting.

  By the way, resin pipes such as hard vinyl chloride used for sewers, water distribution pipes, civil engineering pipes, etc. are often used by attaching them vertically to walls or the like. In that case, it is necessary to take measures against expansion and contraction in a long rigid vinyl chloride pipe or the like, and therefore, a socket called an insertion socket with an internal rubber ring is used.

Also, in repairing pipes that are mounted vertically on walls, etc., repair is done by cutting the repaired part of the pipe and connecting a socket called an exchange socket to the lower end on the upstream side of the cut pipe. Yes.
No. 1-37889 Japanese Patent Laid-Open No. 7-239055

  However, the above-described conventional pipe insertion and connection device is such that two pipes to be connected are arranged in a horizontal state, one of them is fixed, and the other is moved and inserted and connected. For connection, skill was required for the alignment of the two pipes.

  Also, when the socket is inserted and connected to the lower end of the dredge pipe as described above, if the socket has a large diameter and a heavy weight, it is very difficult to carry it by hand. Become. Even if an attempt is made to insert and connect a socket with the above-described conventional pipe insertion and connection device, the socket cannot be inserted and connected to the lower end of a pipe that is already vertically attached to a wall or the like due to structural problems.

  Therefore, the present invention has been made in view of the circumstances as described above, and with a simple device configuration, a pipe can be easily inserted and connected to the lower end of a pipe that is vertically attached to a wall or the like. It is an object to provide an insertion connection device.

  In order to solve the above problems, a pipe insertion and connection device according to the present invention is a pipe insertion and connection device for first inserting and connecting a socket to the lower end of an upstream pipe, each having a stopper at an appropriate position above and below. It is composed of a plurality of rod-shaped support members and a pair of pipe fixing chuck half members, and when combined, the overall planar shape is a square shape, and each pipe fixing chuck half member is curved in an arc shape on the opposite side. A pipe fixing chuck member that is formed in the recess and whose radius of curvature is set larger than the radius in the vicinity of the lower end of the upstream pipe to be fixed and has a through hole through which the rod-shaped support member is inserted in the thickness direction; and A pipe fixing chuck mechanism including a fixing chuck for the pipe fixing chuck member and a tightening fixing member for releasing, and a socket An insertion part to be inserted into the end opening and an engagement part to be engaged with the lower end part of the socket, a socket insertion plate provided so as to cover the lower end opening of the socket, and a press-fit jack are supported on the substrate, and are supported in a rod shape. A plurality of notches for receiving the lower end of the member are formed, and a press-fit jack mechanism is provided that applies pressure input to the socket via the socket insertion plate by the press-fit jack.

  The second aspect of the present invention is characterized in that, in the first invention, a cushion material is attached to a concave portion curved in an arc shape of each pipe fixing chuck half member.

  According to a third aspect of the present invention, in the first or second aspect of the invention, the socket insertion plate has a plurality of recesses that can be engaged with lower end portions of sockets having different diameters.

  Further, fourthly, in any one of the first to third inventions, a set screw in which at least an upper portion of the plurality of rod-shaped support members is formed in a screw portion, and an upper stopper is screwed to the screw portion. It is characterized by being.

  According to the first aspect of the present invention, the pair of pipe fixing chuck half members constituting the pipe fixing chuck member of the pipe fixing chuck mechanism are arranged on both sides near the lower end of the upstream pipe, The pipe fixing chuck member is tightened to fix the chuck, and the upper portions of the plurality of rod-shaped support members are received by the receiving portions of the pipe fixing chuck member and fixed with stoppers, and the socket insertion plate is inserted into the lower end opening of the socket. It is very simple and easy to set it in the press-fit jack mechanism in the combined state, receive the lower end of the rod-like support member in the notch of the board of the press-fit jack mechanism and fix it with a stopper, and apply pressure input with the press-fit jack With a simple operation, the socket can be reliably inserted and connected to the lower end of the pipe. Further, the socket can be easily inserted and connected to the lower end portion of the pipe attached to the wall or the like.

  Furthermore, since the radius of curvature of the arcuately curved recesses of the pair of pipe fixing chuck half members is set to be larger than the radius of the lower end of the upstream pipe, it corresponds to the fixing chuck of the upstream pipe of various outer diameters. Is possible.

  According to the second aspect of the present invention, since the cushion material is attached to the arc-shaped concave portion of each pipe fixing chuck half member, a large force is locally applied to the upstream pipe and the upstream pipe is damaged. Is effectively prevented, and a secure fixing chuck can be achieved.

  According to the third aspect of the present invention, since the plurality of recesses that can be engaged with the lower end portions of the sockets with different diameters are provided as the socket insertion plate, it is possible to insert and connect sockets having different dimensions with one type of socket insertion plate. It becomes possible to respond.

  According to the fourth aspect of the present invention, since at least the upper part of the plurality of rod-like support members is formed in the screw part, and the set screw screwed into the screw part is used as the upper stopper, the press-fitting with the pipe fixing chuck member The position of the jack mechanism can be easily adjusted.

  The present invention has the features as described above, and an embodiment thereof will be described below.

  FIG. 1 is a side view schematically showing an embodiment of a pipe insertion and connection device according to the present invention (for convenience, only one bar-like support member is shown), FIG. 2 (a), (b), (c), ( d) is a plan view, a right side view, a left side view, a front view, and FIG. 3 of a pair of pipe fixing chuck half members constituting the pipe fixing chuck member of the pipe fixing chuck mechanism according to the embodiment. 4 is a perspective view of a press-fit jack mechanism according to the embodiment. FIG. 5, FIG. 6, and FIG. 7 are plan views schematically showing that the upstream pipes of different diameters are fixed and chucked by the pipe fixing chuck mechanism (the upstream pipe is shown in cross section). is there.

  As shown in FIG. 1, the pipe insertion / connection device 10 of this embodiment includes a pipe fixing chuck mechanism 20, a socket insertion plate 40, and a press-fit jack mechanism 50. 60 is attached to the wall W by an upstream pipe (竪 樋). Reference numeral 70 denotes a socket.

  The pipe fixing chuck mechanism 20 includes a pipe fixing chuck member 21, a fastening fixing member 22, and a plurality (three in this example) of rod-like support members 23.

  As shown in FIG. 2, the pipe fixing chuck member 21 includes a pair of pipe fixing chuck half members 21A and 21B made of a metal such as aluminum. The pair of pipe fixing chuck half members 21A and 21B have a constant thickness, and when combined, the overall planar outer diameter is a substantially quadrangular shape. 24B is formed. The curvature radii of the concave portions 24A and 24B curved in an arc shape are set larger than the radius of the upstream pipe 60 to be fixed and chucked. Here, in setting the radii of curvature of the recesses 24A and 24B, it is necessary to consider so that the fixed chuck of the upstream pipe 60 of various diameter sizes can be handled and the fixed chuck can be surely performed. It is desirable to attach cushion materials 25A, 25B made of hard rubber or the like to the surfaces of the recesses 24A, 24B by a method such as sticking. The pipe fixing chuck half members 21A and 21B are formed with insertion holes 26 through which the upper portions of the rod-like support members 23 are inserted. The three insertion holes 26 are provided so as to be positioned in the vicinity of the apex of the equilateral triangle when the pair of pipe fixing chuck half members 21A and 21B fix and chuck the upstream pipe 60, respectively. Further, the three insertion holes 26 are formed in an elongated slot shape so that the position adjustment in the direction of the arrow in FIG.

  In addition, in the pipe fixing chuck half members 21A and 21B, through holes 27 for penetrating the fastening fixing member 22 from the lateral direction are portions corresponding to both sides of a rectangular planar shape as shown in FIG. Is formed. And the position of these through-holes 27 in the thickness direction is substantially the center as shown in FIGS. 2 (b), (c) and (d). For example, as shown in FIGS. 5 to 7, the tightening fixing member 22 can be configured by a screw rod 28 including a head 28 </ b> A and a screw portion 28 </ b> B, and a set screw 29 including a nut or the like. In this case, as shown in FIG. 2, the through-hole 27 accommodates the screw rod 28, so that the through-holes 27b and 27c through which the screw 28B penetrates and the head accommodating space 27a for accommodating the head 28A of the screw rod 28 are provided. Composed.

  The rod-like support member 23 is made of a metal material having high strength such as steel. In this example, three rod-like support members 23 are used, and each rod-like support member 23 is a screw rod formed entirely on the screw portion 30 and is provided with set screws 31 and 32 on the upper and lower sides (FIG. 1). ). As the set screws 31 and 32, for example, nuts that are screwed into the screw portion 30 can be used. The distance between the pipe fixing chuck member 21 and the press-fit jack mechanism 50 can be adjusted by the set screws 31 and 32 of the rod-like support member 23.

  The socket insertion plate 40 is made of a metal material such as cast iron, for example. As shown in FIG. 3, the socket insertion plate 40 has a substantially disk shape as a whole and engages with the lower end portion of the socket 70 around the periphery. The joint portion 41 and the insertion portion 42 are provided, and the insertion portion 42 is inserted into the lower end opening of the socket 70. The socket insertion plate 40 transmits the press input to the socket 70 when press-fitting by the press-fit jack mechanism 50, and performs a good press-fit.

  As shown in FIG. 4, the press-fit jack mechanism 50 has a configuration in which a press-fit jack 52 is integrally installed on a disk-shaped substrate 51. A notch 53 is formed around the substrate 51 for receiving and fixing the lower end portion of the rod-like support member 23. A pressure plate 54 is attached to the upper part of the press-fit jack 52.

  Next, the operation of the pipe connection insertion device of this embodiment will be described.

  First, the pipe fixing chuck member 21 is disposed at an appropriate height position near the lower end of the upstream pipe 60 to be connected. In this arrangement, the periphery of the upstream pipe 60 is sandwiched between the pair of pipe fixing chuck half members 21 </ b> A and 21 </ b> B of the pipe fixing chuck member 21. Then, the screw rod 28 is passed through the through holes 27 on both sides, and using a suitable tool such as a wrench, the set screw 29 is screwed into the screw portion 28B of the screw rod 28 and rotated to be tightened. As a result, the pair of pipe fixing chuck half members 21 </ b> A and 21 </ b> B is fixed and chucked around the upstream pipe 60. Here, the radius of curvature of the recesses 24A and 24B of the pair of pipe fixing chuck half members 21A and 21B is set larger than the radius of the upstream pipe 60 as shown in FIGS. The fixing chuck half members 21A and 21B are fastened and fixed so as to abut and surround the periphery of the upstream pipe 60 via the cushion members 25A and 25B. 5 to 7 show that one pipe fixing chuck member 21 can be used for fixing chucks of the upstream pipe 60 having a plurality of different diameters.

  Next, while inserting the insertion portion 42 of the socket insertion plate 40 into the lower end opening of the socket 70 and engaging the lower end portion of the socket 70 with the engagement portion 41 of the socket insertion plate 40, these are press-fitting jack mechanisms. Place on 50 pressure plates 54. Then, the press-fitting jack mechanism 50 and the socket 70 into which the socket insertion plate 40 is inserted are brought to the lower side of the upstream pipe 60 where the pipe fixing chuck member 21 is fixed and chucked to support the pipe fixing chuck mechanism 20 in a rod shape. Each member 23 is received in a notch 53 provided on the substrate 51 of the press-fit jack mechanism 50 so that the lower set screw 32 is located on the lower side of the substrate 51. Further, the upper set screw 31 of the rod-like support member 23 is tightened with a tool such as a spanner, and the upstream pipe 60 and the socket 70 are loosely inserted, and the pipe fixing chuck member 21 and the press-fit jack mechanism 50 are fixed. . Next, the press-fit jack 52 is operated to raise the pressure plate 54, and the pressure input is transmitted to the socket 70 via the socket insertion plate 40, and the socket 70 is press-fitted into the lower end portion of the upstream pipe 60. As described above, the socket 70 can be inserted into the lower end of the upstream pipe 60 by a simple operation.

  When the insertion is completed, the pipe fixing chuck mechanism 20, the socket insertion plate 40, and the press-fit jack mechanism 50 are removed by the opposite operation.

  Although the present invention has been described based on one embodiment, the present invention is of course not limited to this embodiment, and various modifications and changes can be made.

  For example, in the above embodiment, the socket insertion plate 40 is provided with an engaging portion (step portion) 41 around the socket insertion plate 40. However, according to the present invention, the socket insertion plate 40 is as shown in FIG. By providing a plurality of recesses 75 that can be engaged with the lower ends of sockets 70 having different diameters, one type of socket insertion plate 40 can be used for sockets 70 having various diameters.

  Moreover, in the said embodiment, although the thread part 30 was formed in the whole rod-shaped support member 23, according to this invention, the lower side set screw (stopper) 32 is fixedly provided and the upper side of the rod-shaped support member 23 is provided. Only the portion may be a screw portion, and an upper set screw (stopper) 31 may be provided there. Moreover, you may make it form a thread part in the appropriate place of the upper side of the rod-shaped support member 23, and a lower side. Furthermore, a fixing method may be adopted in which two lower set screws (stoppers) 32 are provided and the substrate 51 is sandwiched from above and below at the notch 53. Of course, as a stopper, an appropriate fixing means other than a set screw can be used.

  Furthermore, in the said embodiment, although the three rod-shaped support members 23 were used, according to this invention, you may make it use four or more depending on the diameter dimension of the upstream pipe 60. FIG.

It is a side view which shows one Embodiment of the pipe insertion connection apparatus by this invention. (A), (b), (c), (d) is a plan view, a right side view, and a left side showing a pair of pipe fixing chuck half members constituting the pipe fixing chuck member of the pipe fixing chuck mechanism in the embodiment. It is a surface view and a front view. It is a perspective view which shows the socket insertion board in the said embodiment. It is a perspective view which shows the press-fit jack mechanism in the said embodiment. It is a top view which shows a mode that the pipe fixing chuck mechanism in the said embodiment is fixing the upstream pipe (small diameter). It is a top view which shows a mode that the pipe fixing chuck mechanism in the said embodiment is fixing the upstream pipe (medium diameter). It is a top view which shows a mode that the pipe fixing chuck mechanism in the said embodiment is fixing the upstream pipe (large diameter). (A), (b) is the top view and XX sectional view which show the modification of a socket insertion board.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Pipe insertion connection apparatus 20 Pipe fixing chuck mechanism 21 Pipe fixing chuck member 21A, 21B Half member for pipe fixing chuck 22 Tightening fixing member 23 Rod support member 24A, 24B Recessed part 25A, 25B Cushion material 26 Insertion hole 27 Through hole 27a Head accommodation Space 27b, 27c Through part 28 Screw rod 29 Set screw 30 Screw part 31, 32 Set screw 40 Socket insertion plate 41 Engagement part 42 Insertion part 50 Press-fit jack mechanism 51 Substrate 52 Press-fit jack 53 Notch 54 Pressure plate 60 Upstream pipe 70 Socket W Wall

Claims (4)

  A pipe insertion and connection device for inserting and connecting a socket to a lower end of an upstream pipe, which is composed of a plurality of rod-like support members each having a stopper at appropriate positions in the upper and lower sides, and a pair of pipe fixing chuck half members. Sometimes the overall planar shape is a quadrilateral shape, and each pipe fixing chuck half member is formed in a concave portion whose opposite side is curved in an arc shape, and its radius of curvature is near the lower end of the upstream pipe to be fixed chucked Pipe fixing chuck member having an insertion hole that is set to be larger than the radius and having a through hole through which the rod-like support member is inserted in the thickness direction, and a fixing chuck for releasing the pipe fixing chuck member and a fastening fixing member for releasing the pipe fixing chuck member And an insertion portion to be inserted into the lower end opening of the socket, and an engagement portion to be engaged with the lower end portion of the socket A socket insertion plate provided so as to cover the lower end opening of the socket, and a plurality of notches for supporting the press-fit jack on the substrate and receiving the lower end of the rod-like support member are formed, and the socket is inserted through the socket insertion plate by the press-fit jack. A pipe insertion and connection device comprising a press-fitting jack mechanism for applying a pressure input to the pipe.   2. The pipe insertion and connection device according to claim 1, wherein a cushion material is attached to a concave portion curved in an arc shape of each pipe fixing chuck half member.   The pipe insertion and connection device according to claim 1 or 2, wherein the socket insertion plate has a plurality of recesses that can be engaged with lower ends of sockets having different diameters.   The pipe insertion according to any one of claims 1 to 3, wherein at least an upper part of the plurality of rod-shaped support members is formed in a screw part, and the upper stopper is a set screw that is screwed with the screw part. Connected device.

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