CN113236894A - Connecting structure of PVC pipe - Google Patents

Abstract

The invention discloses a connecting structure of a PVC pipe, which comprises a first pipe fitting, a second pipe fitting and a connecting piece, wherein the connecting piece comprises a connecting pipe and a plurality of positioning insertion rods, a convex ring coaxial with the connecting pipe is arranged in the middle of the inner wall of the connecting pipe, one end of the first pipe fitting is inserted into the connecting pipe, the supporting is arranged on one side of the convex ring, one end of the second pipe fitting is inserted into the connecting pipe, a plurality of first jacks and a plurality of second jacks are arranged on the inner wall of the connecting pipe, the circumferences of the first jacks are uniformly distributed on one side, close to the first pipe fitting, of the convex ring, a plurality of first through holes are formed in the first pipe fitting and are arranged in a one-to-one correspondence with the first jacks, a plurality of second through holes are formed in the second pipe fitting and are arranged in a one-to-one correspondence with the second jacks, each second jack in the second jacks is inserted after being penetrated through one second through hole by one positioning insertion rod, and the inner walls of the first pipe fitting, the second pipe fitting and the convex ring are flushed. Compared with the prior art, the invention can realize the balance of the flatness and the strength of the connecting structure.

Description

Connecting structure of PVC pipe

Technical Field

The invention relates to a connecting structure, in particular to a connecting structure of a PVC pipe.

Background

A PVC pipe (PVC-U pipe) is a pipe made of PVC resin, stabilizer and lubricant through hot-pressing and shaping, and features high anticorrosion power, easy adhesion, low cost and high hardness. In the prior art, the actual condition of carrying is considered, and the length that the pipeline was laid generally all has the requirement, consequently often need connect the PVC pipe, and common PVC pipe connection mode has socket joint to connect, but current connection structure can not guarantee structural flatness and joint strength's compromise. In view of the above, the inventors of the present application have conducted extensive studies to obtain a connection structure of PVC pipes.

Disclosure of Invention

The invention aims to provide a connecting structure of a PVC pipe, which can realize the balance of flatness and strength of the connecting structure.

The technical purpose of the invention is realized by the following technical scheme:

the utility model provides a connection structure of PVC pipe, includes first pipe fitting, second pipe fitting and connecting piece, the connecting piece includes connecting pipe and a plurality of location inserted bar, the inner wall middle part of connecting pipe be equipped with the coaxial bulge loop of connecting pipe, the one end of first pipe fitting is inserted in the connecting pipe, support the top a lateral part of bulge loop, the one end of second pipe fitting is inserted in the connecting pipe, support the top another lateral part of bulge loop, be equipped with a plurality of first jacks and a plurality of second jack on the inner wall of connecting pipe, a plurality of first jack circumference evenly distributed in the bulge loop is close to one side of first pipe fitting, a plurality of second jack circumference evenly distributed in the bulge loop be close to one side of second pipe fitting, be equipped with on the first pipe fitting a plurality of with a plurality of first through-holes that a plurality of first jacks one-to-one set up, every in a plurality of first jacks the first jack is by one location inserted bar passes one behind the first through-hole The second pipe fitting is provided with a plurality of second through holes which are in one-to-one correspondence with the second through holes, each second through hole in the second pipe fitting is inserted after the second through hole is penetrated by one positioning insertion rod, and the inner walls of the first pipe fitting, the second pipe fitting and the convex ring are flush.

In a preferred embodiment, the inner wall of the convex ring is provided with a plurality of positioning holes distributed circumferentially.

In a preferred embodiment, a plurality of annular metal sheets are arranged on the inner wall of the connecting pipe and two side walls of the convex ring.

In a preferred embodiment, the end of the positioning inserted bar is provided with a plurality of flaps, a connecting sheet for connecting the two flaps is arranged between two adjacent flaps in the plurality of flaps, a containing cavity is formed between the plurality of flaps, a super glue is contained in the containing cavity, the bottom of the first insertion hole is provided with a first guide cone, the bottom of the second insertion hole is provided with a second guide cone, and when the positioning inserted bar is inserted into the first insertion hole or the second insertion hole, the first guide cone or the second guide cone separates the plurality of flaps.

In a preferred embodiment, the connecting sheet is made of a rubber material.

In a preferred embodiment, an elastic piece is arranged at the outer side of the flap, one end of the elastic piece is connected to the flap, the other end of the elastic piece abuts against the outer side wall of the first through hole or the second through hole, the aperture of the first jack is larger than that of the first through hole, and the aperture of the second jack is larger than that of the second through hole.

In a preferred embodiment, be equipped with the first draw-in groove and the second draw-in groove of rectangular shape on the inboard border of first through-hole, first draw-in groove with the second draw-in groove collineation, and be on a parallel with the central axis of first pipe fitting, be equipped with the third draw-in groove and the fourth draw-in groove of rectangular shape on the inboard border of second through-hole, the third draw-in groove with the fourth draw-in groove collineation, and be on a parallel with the central axis of second pipe fitting, the both sides of location inserted bar are equipped with first card strip and second card strip, first card strip be used for with first draw-in groove with the third draw-in groove cooperatees, the second card strip be used for with the second draw-in groove with the fourth draw-in groove cooperatees.

Compared with the prior art, the invention provides the connecting structure of the PVC pipe, under the structural arrangement, the inner walls of the first pipe fitting, the second pipe fitting and the convex ring are flush, namely the connecting part of the first pipe fitting and the second pipe fitting is also flat, and in the long-term use process, sundries cannot be deposited due to uneven structure, so that on one hand, the blockage of the sundries is avoided, and on the other hand, the deposited sundries are prevented from causing burden to the connecting structure of the pipeline and influencing the stability of the connecting structure; the positioning insertion rod is arranged on the basis, the positioning insertion rod is inserted into the first through hole and the first jack or the second through hole and the second jack, the positioning insertion rod inserted into the first through hole and the first jack is fixedly connected with the first pipe fitting and the connecting pipe, and the positioning insertion rod inserted into the second through hole and the second jack is fixedly connected with the second pipe fitting and the connecting pipe, so that the structural strength of the connecting structure can be effectively enhanced, and the stability of the connecting structure is effectively guaranteed.

Drawings

Fig. 1 is a schematic structural view of a connection structure of PVC pipes according to the present invention.

Fig. 2 is an enlarged schematic view of a portion a of fig. 1.

Fig. 3 is a schematic diagram of the matching structure of the first jack, the first through hole and the corresponding positioning inserted rod of the connecting structure of the PVC pipe.

Fig. 4 is a structural view of a positioning insert rod of a coupling structure of PVC pipes according to the present invention.

Fig. 5 is a schematic structural view of a connecting device of a PVC pipe according to the present invention.

Fig. 6 is a schematic structural view of a first pushing unit of the coupling apparatus for PVC pipe according to the present invention.

Fig. 7 is a schematic structural view of the first pushing unit of the connecting device for PVC pipes according to the present invention after the first annular groove is exposed.

Fig. 8 is a schematic longitudinal section structure of a positioning rod of a connecting device of PVC pipes according to the present invention.

Fig. 9 is a schematic structural view of an outer member of a PVC pipe coupling apparatus according to the present invention.

FIG. 10 is a first view of the perforating apparatus for PVC pipe wall according to the present invention.

FIG. 11 is a schematic structural diagram of a second view angle of the perforating device for PVC pipe wall according to the present invention.

FIG. 12 is a schematic diagram of the related fitting structure of the opening and closing strip of the PVC pipe wall perforating device.

FIG. 13 is a schematic diagram of the second slide block of the PVC pipe wall perforating device according to the present invention.

In the drawings

A first pipe member 1 a; a first through-hole 2 a; a first card slot 3 a; a second card slot 4 a; a second pipe member 5 a; a second through hole 6 a; a connecting pipe 7 a; a first insertion hole 8 a; a first guide cone 9 a; a convex ring 10 a; positioning holes 11 a; a positioning plunger 12 a; a first clip strip 13 a; a second card strip 14 a; the flaps 15 a; a spring piece 16 a; the connection sheet 17 a; the accommodation chamber 18 a; a positioning rod 1 b; a first adjusting screw 2 b; a first connecting rod 3 b; a first adjusting screw hole 4 b; a housing hole 5 b; a first elastic member 6 b; a positioning block 7 b; a positioning rod 8 b; a first pushing unit 9 b; a second adjusting screw 10 b; a second connecting rod 11 b; a first push block 13 b; a first grip hole 14 b; a first annular groove 15 b; a first clamp block 16 b; the second elastic member 17 b; a second clamp block 12 b; a third elastic member 18 b; a first clamp plate 19 b; a second clamping plate 20 b; a second pushing unit 21 b; a transmission 22 b; a drive motor 23 b; a spiral conduit 24 b; a support ring 1 c; a chute 0 c; an abutting groove 2 c; a first fixing plate 3 c; a first slide hole 4 c; a slider 5 c; a grip sheet 6 c; a first positioning screw 7 c; a first positioning nut 8 c; a second slider 9 c; a placement groove 10 c; a biasing spring 11 c; an abutting block 12 c; a second fixing plate 13 c; a second slide hole 14 c; a slot 15 c; a third slider 16 c; a slider 17 c; a waist portion 18 c; a shutter groove 19 c; a drilling motor 20 c; an opening and closing bar 21 c; an open-close bolt 22 c; a first drill rod 23 c; a second drill pipe 24 c.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

As shown in fig. 1 to 4, a connecting structure of a PVC pipe includes a first pipe 1a, a second pipe 5a and a connecting member, where the connecting member includes a connecting pipe 7a and a plurality of positioning insertion rods 12a, a protruding ring 10a coaxial with the connecting pipe 7a is disposed in the middle of an inner wall of the connecting pipe 7a, one end of the first pipe 1a is inserted into the connecting pipe 7a and abuts against one side of the protruding ring 10a, one end of the second pipe 5a is inserted into the connecting pipe 7a and abuts against the other side of the protruding ring 10a, the inner wall of the connecting pipe 7a is provided with a plurality of first insertion holes 8a and a plurality of second insertion holes, the plurality of first insertion holes 8a are circumferentially and uniformly distributed on one side of the protruding ring 10a close to the first pipe 1a, the plurality of second insertion holes are circumferentially and uniformly distributed on one side of the protruding ring 10a close to the second pipe 5a, the first pipe fitting 1a is provided with a plurality of first through holes 2a which are arranged in a one-to-one correspondence with the first through holes 8a, each first through hole 8a in the first through holes 8a is inserted after the first through hole 2a is penetrated by one positioning insertion rod 12a, the second pipe fitting 5a is provided with a plurality of second through holes 6a which are arranged in a one-to-one correspondence with the second through holes, each second through hole in the second through holes is penetrated by one positioning insertion rod 12a and then inserted, and the inner walls of the first pipe fitting 1a, the second pipe fitting 5a and the convex ring 10a are flush. A

According to the connecting structure of the PVC pipe, under the structural arrangement, the inner walls of the first pipe fitting 1a, the second pipe fitting 5a and the convex ring 10a are flush, namely, the connecting part of the first pipe fitting 1a and the second pipe fitting 5a is also flat, and in the long-term use process, deposition of impurities due to structural unevenness is avoided, so that on one hand, blockage of the impurities is avoided, and on the other hand, the problem that the deposited impurities cause burden to the connecting structure of the pipeline and influence on the stability of the connecting structure is avoided; set up location inserted bar 12a on this basis, location inserted bar 12a alternates in first through-hole 2a and first jack 8a, or in second through-hole 6a and the second jack, the location inserted bar 12a that alternates in first through-hole 2a and first jack 8a realizes that first pipe fitting 1a and connecting pipe 7 a's connection is fixed, the location inserted bar 12a that alternates in second through-hole 6a and second jack realizes that second pipe fitting 5a and connecting pipe 7 a's connection is fixed, thereby can effectively strengthen connection structure's structural strength, effectively guarantee connection structure's stability.

In order to mount the positioning inserted rod 12a, a special tool is used for mounting, a plurality of positioning holes 11a distributed circumferentially are arranged on the inner wall of the convex ring 10a, and the plurality of positioning holes 11a are used for positioning the special tool so that the special tool can be accurately positioned on a working position.

In order to effectively improve the sealing performance of the connection structure, a plurality of annular metal sheets are arranged on the inner wall of the connection pipe 7a and two side walls of the convex ring 10 a. After the positioning insertion rod 12a is installed, the energized solenoid is sleeved on the connecting structure, so that the metal sheet generates heat, substances nearby the metal sheet are melted by the heat-generating metal sheet, gaps between the first pipe fitting 1a and the connecting pipe 7a and between the second pipe fitting 5a and the connecting pipe 7a are sealed, and the stability of the connecting structure is effectively improved.

In order to further improve the stability of the connection structure, the end of the positioning insertion rod 12a is provided with a plurality of flaps 15a, a connecting sheet 17a for connecting the two flaps is arranged between two adjacent flaps 15a in the plurality of flaps 15a, a containing cavity 18a is formed between the plurality of flaps 15a, strong glue is contained in the containing cavity 18a, the bottom of the first insertion hole 8a is provided with a first guide cone 9a, the bottom of the second insertion hole is provided with a second guide cone, and when the positioning insertion rod 12a is inserted into the first insertion hole 8a or behind the second insertion hole, the first guide cone 9a or the second guide cone separates the plurality of flaps 15 a. When the positioning inserted bar 12a is not installed, the plurality of flaps 15a are hermetically connected by the connecting sheet 17a, and the accommodating cavity 18a is a sealed cavity, during the process that the positioning inserted bar 12a is gradually inserted into the first through hole 2a and the first insertion hole 8a, or gradually inserted into the second through hole 6a and the second insertion hole, due to the action of the first guide cone 9a or the second guide cone, the connecting sheet 17a is torn, the accommodating cavity 18a is broken, the strong glue in the accommodating cavity 18a flows out, the space of the first insertion hole 8a or the second insertion hole is filled, and the first pipe member 1a and the first connecting pipe 7a or the second pipe member 5a and the second connecting pipe 7a are connected, so that the structural stability and the sealing performance of the connecting structure are further enhanced.

Specifically, the connecting sheet 17a is made of a rubber material.

In order to further improve the stability of the structure, an elastic sheet 16a is arranged at the outer side part of the flap 15a, one end of the elastic sheet 16a is connected to the flap 15a, the other end of the elastic sheet abuts against the outer side wall of the first through hole 2a or the second through hole 6a, the aperture of the first insertion hole 8a is larger than that of the first through hole 2a, and the aperture of the second insertion hole is larger than that of the second through hole 6 a. In the process that the positioning inserted bar 12a is gradually inserted into the first jack 8a or the second jack, the elastic sheet 16a gradually enters the first jack 8a or the second jack and finally completely enters the first jack 8a or the second jack, and after the elastic sheet enters the first jack 8a or the second jack, the elastic sheet 16a bounces off by means of the deformation recovery capability of the elastic sheet 16a, so that the positioning inserted bar 12a is limited in the first jack 8a or the second jack and cannot exit, and the structural strength is effectively improved.

In order to further promote structural strength, be equipped with the first draw-in groove 3a and the second draw-in groove 4a of rectangular shape on the inboard border of first through-hole 2a, first draw-in groove 3a with the collineation of second draw-in groove 4a, and be on a parallel with the central axis of first pipe fitting 1a, be equipped with the third draw-in groove and the fourth draw-in groove of rectangular shape on the inboard border of second through-hole 6a, the third draw-in groove with the fourth draw-in groove collineation, and be on a parallel with the central axis of second pipe fitting 5a, the both sides of location inserted bar 12a are equipped with first card strip 13a and second card strip 14a, first card strip 13a be used for with first draw-in groove 3a with the third draw-in groove cooperatees, second card strip 14a be used for with second draw-in groove 4a with the fourth draw-in groove cooperatees. Under the above-mentioned structural arrangement, after the location inserted bar 12a inserts first jack 8a or second jack, first card strip 13a gets into first draw-in groove 3a or third draw-in groove, during second card strip 14a gets into second draw-in groove 4a or fourth draw-in groove, first card strip 13a and second card strip 14a cooperate with shell fragment 16a, realize the centre gripping to first pipe fitting 1a or second pipe fitting 5a for location inserted bar 12a is firmly fixed, thereby effectively guarantees connection structure's stability.

In order to make the positions of the first pipe member 1a, the second pipe member 5a and the connection pipe 7a correspond accurately, marks for the positions may be provided on the outer walls of the first pipe member 1a, the second pipe member 5a and the connection pipe 7 a.

The connection structure of a PVC pipe of this embodiment requires the use of a connection device and a punching and opening device when installing:

as shown in fig. 5 to 9, the connecting apparatus includes an inner member, the inner member includes a plurality of positioning rods 8b1b, a plurality of first pushing units 9b, a plurality of second pushing units 21b, a transmission device 22b, a driving motor 23b and a power supply, the transmission device 22b includes a housing and a transmission assembly disposed inside the housing, the positioning rod 8b1b includes a first adjusting screw 2b, a first connecting rod 3b, a first elastic member 6b and a positioning block 7b, one end of the first connecting rod 3b is provided with a first adjusting screw hole 4b, the other end is provided with a receiving hole 5b, one end of the first adjusting screw 2b passes through the housing and is connected to the transmission assembly, the other end is matched with the first adjusting screw hole 4b, the first elastic member 6b is fixed in the receiving hole 5b, the first elastic member 6b is connected to the positioning block 7b, the connecting rods are in a quadrangular shape, the positioning rods 8b1b are uniformly distributed in a radial shape by taking the transmission device 22b as a center, the first pushing unit 9b comprises a second adjusting screw 10b, a second connecting rod 11b, a first pushing part, a first clamping plate 19b and a second clamping plate 20b, one end of the second connecting rod 11b is connected with the first pushing part, the end part of the other end of the second connecting rod 11b is provided with a second adjusting screw, one end of the second adjusting screw 10b is connected with the transmission assembly, the other end of the second adjusting screw is matched with the second adjusting screw, the first clamping plate 19b and the second clamping plate 20b are arranged on the side part of the first pushing part in parallel and clamp one first connecting rod 3b, the first pushing units 9b are uniformly distributed in a radial shape by taking the transmission device 22b as a center, and the second pushing unit 21b comprises a third adjusting screw, A third connecting rod, a second pushing piece, a third clamping plate and a fourth clamping plate, wherein one end of the second connecting rod 11b is connected with the second pushing piece, the end surface of the other end is provided with a third adjusting screw hole, one end of the third adjusting screw rod is connected with the transmission assembly, the other end of the third adjusting screw rod is matched with the third adjusting screw hole, the third clamping plate and the fourth clamping plate are arranged on the side part of the second pushing piece in parallel, the plurality of second pushing units 21b are uniformly distributed in a radial shape by taking the transmission device 22b as the center, and holds one of the first connecting rods 3b, the plurality of first pushing units 9b and the plurality of second pushing units 21b are respectively provided at both sides of the plurality of positioning rods 8b1b, the driving motor 23b is fixed on the shell, the driving motor 23b is electrically connected with the power supply, and the driving motor 23b is connected with the transmission assembly.

In the present embodiment, in the structural configuration, when the driving motor 23b is activated, the driving assembly is driven to operate, so as to drive the positioning rods 8b1b, the first pushing units 9b and the second pushing units 21b to perform telescopic movement, when the driving motor 23b rotates in one direction, the positioning rods 8b1b, the first pushing units 9b and the second pushing units 21b extend, when the driving motor 23b rotates in the opposite direction, the positioning rods 8b1b, the first pushing units 9b and the second pushing units 21b shorten, the positioning rod 8b1b is relatively long with respect to the first pushing units 9b and the second pushing units 21b, when in actual use, the positioning rod 8b1b is firstly inserted into the positioning hole 11a provided on the connecting pipe 7a, specifically, the positioning block 7b is inserted into the positioning hole 11a to fix the pipe, a positioning rod 12a is disposed on each of the first pushing unit 9b and the second pushing unit 21b, the positioning rod 12a is disposed on the first pushing member and the second pushing member, the first pipe 5a and the second pipe 5a are inserted into the connecting pipe 7a, the driving motor 23b is then started to rotate the first adjusting screw 2b, the second adjusting screw 10b and the third adjusting screw, so that the first connecting rod 3b, the second connecting rod 11b and the third connecting rod extend, the second connecting rod 11b pushes the corresponding positioning rod 12a to insert into the first through hole 2a and the first insertion hole 8a, the third connecting rod pushes the corresponding positioning rod 12a to insert into the second through hole 6a and the second insertion hole, and during the extension of the first connecting rod 3b, due to the position limitation of the positioning hole 11a, the first elastic piece 6b is compressed, the position of the positioning block 7b is relatively unchanged, when the first pushing piece or the second pushing piece pushes the positioning insertion rod 12a to be inserted into the first insertion hole 8a and the second insertion hole, the driving motor 23b is enabled to rotate reversely, the positioning rod 8b1b, the first pushing unit 9b and the second pushing unit 21b are contracted, the positioning block 7b of the positioning rod 8b1b is withdrawn from the positioning hole 11a, and at the moment, the position of the internal part is not limited any more and can be taken out.

The power supply can be set as a mobile power supply which is fixed on the shell or can be set as an external power supply and is connected with the driving motor 23b through a cable, and the internal part is provided with a pull wire so that the internal part can be smoothly taken out after the work is finished, or the internal part can be connected with a common pipe penetrating device in the prior art and is taken out by utilizing the pipe penetrating device.

In the above-mentioned structural arrangement, the first clamping plate 19b, the second clamping plate 20b, the third clamping plate and the fourth clamping plate make the first connecting rod 3b, the second connecting rod 11b and the third connecting rod mutually restricted, so that they cannot rotate, so that the first adjusting screw 2b, the second adjusting screw 10b and the third adjusting screw make the first connecting rod 3b, the second connecting rod 11b and the third connecting rod move when rotating.

Specifically, the transmission assembly includes a transmission shaft, a first bevel gear, a second bevel gear, a third bevel gear, a plurality of fourth bevel gears, a plurality of fifth bevel gears, and a plurality of sixth bevel gears, the transmission shaft is connected to the driving motor 23b, the first bevel gear, the second bevel gear, and the third bevel gear are disposed on the transmission shaft, the plurality of fourth bevel gears are disposed on the plurality of first adjusting screws 2b in a one-to-one correspondence and are matched with the first bevel gear, the plurality of fifth bevel gears are disposed on the plurality of second adjusting screws 10b in a one-to-one correspondence and are matched with the second bevel gear, the plurality of sixth bevel gears are disposed on the plurality of third adjusting screws in a one-to-one correspondence and are matched with the third bevel gear, the structural arrangement of the transmission assembly is a mature arrangement in the prior art, and after the above-mentioned structure is disclosed, and can be easily implemented by those skilled in the art.

Specifically, the first elastic piece 6b is provided as a spring, the positioning block 7b is connected with a positioning rod 8b1b, the positioning rod 8b1b is inserted into the accommodating hole 5b, and the positioning rod 8b1b enables the positioning block 7b to move only in a direction parallel to the first elastic piece 6b, so that the stability of the structure is effectively ensured.

Specifically, the first pushing member comprises a first pushing block 13b, a first gripping hole 14b is formed in the first pushing block 13b, the second pushing member comprises a second pushing block, a second gripping hole is formed in the second pushing block, and the first gripping hole 14b and the second gripping hole are used for placing the positioning insertion rod 12 a.

Furthermore, a first annular groove 15b is formed in the side wall of the first grasping hole 14b, the first pushing member further comprises a first clamping block 16b, a second clamping block 12b, a second elastic member 17b and a third elastic member 18b, one end of the second elastic member 17b is connected with the side wall of the first annular groove 15b, the other end of the second elastic member is connected with the first clamping block 16b, one end of the third elastic member 18b is connected with the side wall of the first annular groove 15b, the other end of the third elastic member is connected with the second clamping block 12b, and the first clamping block 16b and the second clamping block 12b are arranged oppositely; the side wall of the second gripping hole is provided with a second annular groove, the second pushing piece further comprises a third clamping block, a fourth elastic piece and a fifth elastic piece, one end of the fourth elastic piece is connected with the side wall of the second annular groove, the other end of the fourth elastic piece is connected with the third clamping block, one end of the fifth elastic piece is connected with the side wall of the second annular groove, the other end of the fifth elastic piece is connected with the fourth clamping block, and the third clamping block and the fourth clamping block are arranged oppositely. Under the above-mentioned structure, when the positioning inserted link 12a is placed, the positioning inserted link 12a is inserted into the first holding hole 14b or the second holding hole to realize the placement of the positioning inserted link 12a, when the positioning inserted link 12a is inserted into the first through hole 2a and the first insertion hole 8a or the second through hole 6a and the second insertion hole by using the first pushing member or the second pushing member, and then the first pushing member and the second pushing member are retracted, the resistance of the positioning inserted link 12a in the first through hole 2a and the first insertion hole 8a or the second through hole 6a and the second insertion hole is larger than the resistance in the first holding hole 14b or the second holding hole due to the elastic sheet 16a, so that the positioning inserted link 12a is pulled out from the first holding hole 14b or the second holding hole during the retraction of the first pushing member and the second pushing member, and after the pulling out, due to the second elastic sheet 17b, the third elastic sheet 18b, Under the action of the fourth elastic piece and the fifth elastic piece, the first clamping block 16b and the second clamping block 12b are close to each other, and the third clamping block and the fourth clamping block are close to each other, namely, the aperture of the first gripping hole 14b and the aperture of the second gripping hole are reduced, so that the positioning insertion rod 12a cannot be inserted again.

In order to adapt to the shape of the positioning inserted rod 12a, the first clamping block 16b, the second clamping block 12b, the third clamping block and the fourth clamping block are all arranged in an arc shape.

Specifically, the second elastic member 17b, the third elastic member 18b, the fourth elastic member and the fifth elastic member are provided as springs.

The connecting device further comprises an outer piece comprising a spiral wire conduit 24b for heating of the metal sheet.

As shown in fig. 10 to 13, the punching device includes a support ring 1c, a plurality of clasping members, a guide member and a punching assembly, the support ring 1c is configured in a circular shape, a sliding groove 0c is formed on a side wall of the support ring 1c, the clasping members include a first fixing plate 3c, a sliding block 5c, a clasping sheet 6c, a first positioning screw 7c and a first positioning nut 8c, one end of the first fixing plate 3c is fixed on the support ring 1c, the other end of the first fixing plate is connected with the clasping sheet 6c, the first fixing plate 3c is parallel to a plane where the support ring 1c is located, a position scale for indicating a position of the sliding block 5c is arranged on the first fixing plate 3c, a first sliding hole 4c whose length direction is along a radial direction of the support ring 1c is arranged on the first fixing plate 3c, one end of the first positioning screw 7c is connected with the sliding block 5c, the other end of the plurality of holding members penetrates through the first sliding hole 4c and then is matched with the first positioning nut 8c, the holding members are uniformly distributed around the circumference of the supporting ring 1c, the guide member comprises a second sliding block 9c, a second fixing plate 13c and a third sliding block 16c, the second sliding block 9c and the third sliding block 16c are respectively fixed at two ends of the second fixing plate 13c, the second sliding block 9c and the third sliding block 16c are matched with the sliding chute 0c, a second sliding hole 14c with the length direction parallel to the connecting line direction of the second sliding block 9c and the third sliding block 16c is arranged on the second fixing plate 13c, the punching assembly comprises a sliding seat 17c, a drilling motor 20c and a drill bit, a waist part 18c with a contracted volume is arranged in the middle part of the sliding seat 17c, and the waist part 18c is limited in the second sliding hole 14c, and can slide along the second slide hole 14c, the drilling motor 20c is mounted on the slide carriage 17c, the drill is mounted on the driving shaft of the drilling motor 20c, and the support ring 1c is provided with scales for indicating the position of the second fixing plate 13 c.

Pipe wall perforating device is under its structural setting, in operation, at first utilize the pipe fitting that the piece of embracing tightly needs to punch, particularly, adjust the position of each piece 6c of embracing tightly, make each piece 6c of embracing tightly embrace the outer wall of pipe fitting, then utilize second sliding block 9c and third sliding block 16c to adjust the angle of second fixed plate 13c, after angle modulation targets in place, start drilling motor 20c, drilling motor 20c drives the drill bit and rotates, rely on the sliding action in second slide opening 14c of slide 17c, make the drill bit be close to the pipe wall or keep away from the pipe wall, realize drilling work, after having beaten a hole, rotate second fixed plate 13c, carry out offering in next hole, thereby can conveniently realize offering of a plurality of holes.

Corresponding damping should be arranged between the second sliding block 9c and the third sliding block 16c and the sliding groove 0c, so that the second fixing plate 13c can be accurately positioned and can be kept stable in the working process, or a mounting groove 10c is arranged at the bottom of the second sliding block 9c and the third sliding block 16c, an abutting spring 11c and an abutting block 12c are arranged in the mounting groove 10c, the bottom of the abutting block 12c is arranged to be a spherical surface, and meanwhile, a plurality of abutting grooves 2c matched with the abutting block 12c are arranged at the bottom of the sliding groove 0c, so that the second sliding block 9c and the third sliding block 16c are positioned, and the second fixing plate 13c is positioned, and can be stably operated.

In order to achieve a good holding effect, a rubber anti-slip pad is arranged on the side surface of the holding sheet 6c close to the support ring 1 c.

Further, the punching device further comprises an opening and closing strip 21c and an opening and closing bolt 22c, a slot 15c is formed in the side wall of the second sliding hole 14c along the length direction of the second sliding hole, the opening and closing strip 21c is arranged in the slot 15c, an opening and closing screw hole is formed in the opening and closing strip 21c, the opening and closing bolt 22c is matched with the opening and closing screw hole, an opening and closing groove 19c is formed in the side portion of the waist portion 18c of the sliding seat 17c, and the opening and closing strip 21c moves between the opening and closing groove 19c and the slot 15c through the opening and closing bolt 22 c. When the opening and closing strip 21c is completely slotted in the slot 15c, the sliding seat 17c can slide in the direction perpendicular to the second sliding hole 14c, and when the opening and closing strip 21c enters the opening and closing slot 19c, the sliding seat 17c can only move parallel to the second sliding hole 14c, so that convenience is provided for opening the first clamping groove 3a, the second clamping groove 4a, the third clamping groove and the fourth clamping groove.

Further, the drill includes a first drill rod 23c and a second drill rod 24c, a root end of the second drill rod 24c is connected to a tip end of the first drill rod 23c, the second drill rod 24c is thinner than the first drill rod 23c, and a length of the second drill rod 24c is set to be 0.2mm to 0.5 mm. In the process of punching, firstly, the drill bit is made to move in the direction parallel to the second slide hole 14c, the first through hole 2a or the second through hole 6a is formed, then the drill bit is withdrawn, the first clamping groove 3a and the second clamping groove 4a or the third clamping groove and the fourth clamping groove are formed, the first clamping groove 3a, the second clamping groove 4a, the third clamping groove and the fourth clamping groove are formed by the second drill rod 24c, and when the first clamping groove 3a, the second clamping groove 4a, the third clamping groove and the fourth clamping groove are formed, the slide seat 17c can move in the direction perpendicular to the second slide hole 14 c.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrases "comprising … …" or "comprising … …" does not exclude the presence of additional elements in a process, method, article, or terminal that comprises the element. Further, herein, "greater than," "less than," "more than," and the like are understood to exclude the present numbers; the terms "above", "below", "within" and the like are to be understood as including the number.

The foregoing description of the embodiments is provided to facilitate an understanding and use of the invention and it will be apparent to those skilled in the art that various modifications to the embodiments and the generic principles defined herein may be applied to other embodiments without the use of inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.

Claims (7)

1. A PVC pipe connecting structure is characterized by comprising a first pipe fitting, a second pipe fitting and a connecting piece, wherein the connecting piece comprises a connecting pipe and a plurality of positioning insertion rods, a convex ring coaxial with the connecting pipe is arranged in the middle of the inner wall of the connecting pipe, one end of the first pipe fitting is inserted into the connecting pipe and abuts against one side part of the convex ring, one end of the second pipe fitting is inserted into the connecting pipe and abuts against the other side part of the convex ring, a plurality of first jacks and a plurality of second jacks are arranged on the inner wall of the connecting pipe, the circumferences of the plurality of first jacks are uniformly distributed on one side, close to the first pipe fitting, of the convex ring, the circumferences of the plurality of second jacks are uniformly distributed on one side, close to the second pipe fitting, of the convex ring, a plurality of first through holes are arranged on the first pipe fitting in one-to-one correspondence with the plurality of first jacks, each first jack in the plurality of first jacks is inserted after being penetrated through one first through hole by one positioning insertion rod, a plurality of second through holes which are arranged in one-to-one correspondence with the plurality of second jacks are formed in the second pipe fitting, each second jack in the plurality of second jacks is inserted after being penetrated through one second through hole by one positioning insertion rod, and the inner walls of the first pipe fitting, the second pipe fitting and the convex ring are flushed.

2. The coupling structure of PVC pipe according to claim 1, wherein the inner wall of said protruding ring is provided with a plurality of positioning holes distributed circumferentially.

3. The coupling structure of PVC pipe according to claim 1, wherein a plurality of ring-shaped metal pieces are provided on the inner wall of the coupling pipe and both side walls of the protruding ring.

4. The PVC pipe connection structure according to claim 1 or 3, wherein a plurality of petals are provided at an end of the positioning insertion rod, a connection sheet for connecting two adjacent petals is provided between the two petals, a containing cavity is formed between the petals, a super glue is contained in the containing cavity, a first guide cone is provided at the bottom of the first insertion hole, a second guide cone is provided at the bottom of the second insertion hole, and when the positioning insertion rod is inserted into the first insertion hole or the second insertion hole, the first guide cone or the second guide cone separates the petals.

5. A PVC pipe connection structure according to claim 4, wherein the connection sheet is made of rubber material.

6. The PVC pipe connection structure of claim 4, wherein an elastic piece is arranged at the outer side of the flap, one end of the elastic piece is connected to the flap, the other end of the elastic piece abuts against the outer side wall of the first through hole or the second through hole, the aperture of the first jack is larger than that of the first through hole, and the aperture of the second jack is larger than that of the second through hole.

7. The connecting structure of PVC pipes according to claim 4, wherein the first and second slots are disposed on the inner side edge of the first through hole, the first and second slots are collinear and parallel to the central axis of the first pipe, the third and fourth slots are disposed on the inner side edge of the second through hole, the third and fourth slots are collinear and parallel to the central axis of the second pipe, the two sides of the positioning rod are disposed with the first and second clamping strips, the first clamping strip is used for matching with the first and third slots, and the second clamping strip is used for matching with the second and fourth slots.

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