A PE locking split coupling for improving longitudinal locking ability

Abstract

The present invention discloses a PE locking split coupling for improving longitudinal locking ability, which relates to the technical field of split couplings. The present invention includes two symmetrically arranged half pipe shells, and two PE butt pipes are placed inside the two half pipe shells. Locking ears are fixedly installed on both sides of the docking part of the two half pipe shells, and a plurality of uniformly distributed locking holes are formed at the tops of the locking ears. Copper locking half rings are fixedly installed on the inner walls at both ends of the half pipe shells, and a plurality of rack-type rubber sleeves are fixedly installed on the inner walls of the half pipe shells and are uniformly distributed along the axis of the half pipe shells. By setting a longitudinal locking assembly, the present invention rotates a total of four hexagon heads in two groups in sequence, so that the drill pipe cone head at the bottom end of the drill rod drills into the outer pipe wall of the PE butt pipe until the drill pipe cone head completely penetrates the pipe wall, and the four drill rods are respectively inserted into the drilled holes to longitudinally block the two PE butt pipes, further preventing the PE butt pipes from being longitudinally pulled off outward.

Description

Technical Field

[0001] The invention relates to the technical field of half joints, and in particular to a PE locking half joint with improved longitudinal locking capability. Background Art

[0002] The Haff joint is a common pipeline leak stopper and pipeline emergency repair device. It can be used to repair leaks at the socket of two pipes and the pipeline itself. The Haff joint has a simple structure and is generally composed of only two semi-pipe shells, rubber pads and fastening bolts. It is easy to install. Only the shells are aligned at the leaking part and the bolts are tightened to complete the emergency repair of the pipeline. The use of this device can save water outage time and reduce emergency repair costs.

[0003] When the existing half joint is used to connect two PVC / PE pipes, since the half joint only tightens the pipes but does not lock the pipes longitudinally, the pipes are easily affected by geological subsidence and water hammer in the buried area, or by factors such as a sudden increase in pressure, which may cause the two pipes to be easily pulled apart longitudinally, thereby causing the pipe connection to be disconnected. Therefore, a PE locking half joint with improved longitudinal locking ability is proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that when the existing half joint is used to connect two PVC / PE pipes, the half joint only tightens the pipes but does not lock the pipes longitudinally, making the pipes susceptible to geological subsidence and water hammer in the buried area, or sudden pressure increase, which may cause the two pipes to be easily pulled apart longitudinally, thereby causing the pipe connection to be disconnected. The present invention provides a PE locking half joint with improved longitudinal locking capability.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0006] A PE locking half joint with improved longitudinal locking capability, comprising two symmetrically arranged half-tube shells, two PE butt-jointed pipes are placed inside the two half-tube shells, locking ears are fixedly installed on both sides of the butt joints of the two half-tube shells, a plurality of evenly distributed locking holes are opened on the tops of the locking ears, copper locking half rings are fixedly installed on the inner walls of both ends of the half-tube shells, a plurality of rack-type rubber sleeves evenly distributed along the axis of the half-tube shells are fixedly installed on the inner walls of the half-tube shells, and longitudinal locking components are arranged on the side walls of the half-tube shells;

[0007] The longitudinal locking assembly is used to respectively perform drilling and locking on one end of the two PE butt-joint pipes. The locking assembly comprises two guide screw sleeves respectively fixedly mounted on the two ends of the half-tube shell, the axes of the two guide screw sleeves are perpendicular to the axis of the half-tube shell, one end of the guide screw sleeve extends to the interior of the half-tube shell, the interior of the guide screw sleeve is threaded with a guide screw, one end of the guide screw extends to the outside of the half-tube shell and is fixedly mounted with an extrusion block, the side of the extrusion block facing away from the guide screw is fixedly mounted with a hexagonal head, the other end of the guide screw is fixedly mounted with a drill rod, one end of the drill rod is located inside the half-tube shell and is fixedly mounted with a drill pipe cone head, and an elastic rubber sleeve is fixedly sleeved on the drill rod.

[0008] Furthermore, a water-swellable rubber sleeve is fixedly sleeved on the top of the drill rod, and the elastic rubber sleeve is located between the water-swellable rubber sleeve and the drill pipe cone head.

[0009] Furthermore, an outer rubber sleeve is movably sleeved on one end of the guide screw located outside the half-tube shell, and the outer rubber sleeve is located between the guide screw sleeve and the extrusion block.

[0010] Furthermore, a protective shell matched with the outer rubber sleeve is movably sleeved on one end of the guide screw located outside the half-tube shell, and the protective shell is located on the top of the outer rubber sleeve.

[0011] Furthermore, a positioning lower shell is placed at the bottom of the two locking ears located at the same place, a receiving groove adapted to the locking ears is opened inside the positioning lower shell, a plurality of fastening thread grooves are opened on the inner wall of the positioning lower shell, a positioning upper cover is placed on the top of the positioning lower shell, and a plurality of yield grooves corresponding to the positions of the fastening thread grooves are opened on the top of the positioning upper cover.

[0012] Furthermore, a plurality of positioning slots corresponding to the positions of the locking holes are provided inside the receiving slot, and a bolt receiving slot is provided at the bottom of each of the positioning slots.

[0013] Furthermore, a plurality of magnetic blocks are fixedly mounted on the inner wall of the positioning lower shell.

[0014] Furthermore, a first sealing strip in contact with the locking ear is fixedly mounted on the inner wall of the positioning lower shell, and a plurality of second sealing strips in contact with the locking ear and the positioning lower shell are fixedly mounted on the inner wall of the positioning upper cover.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. When the present invention is in use, two sets of copper locking half-rings inside both ends of the half-tube housing will be assembled and sleeved on the outer wall of the PE butt joint pipe, thereby pressing the pipe wall. With the serrated structure of the copper locking half-rings, longitudinal locking of the PE butt joint pipe is carried out. At the same time, the rack-type rubber sleeve inside the half-tube housing will elastically deform with the assembly of the half-tube housing and press against the outer wall of the half-tube housing, also increasing the friction between the half-tube housing and the PE butt joint pipe, enhancing the longitudinal locking effect of the half-tube housing on the PE butt joint pipe, and preventing the PE butt joint pipe from being pulled off due to external forces.

[0017] 2. By setting the longitudinal locking assembly, after the half-tube housing is assembled on the PE butt joint pipe, rotate a total of four hexagon heads in two groups in sequence, so that the drill pipe cone head at the bottom of the drill rod drills into the outer wall of the PE butt joint pipe until the drill pipe cone head completely penetrates the pipe wall, and the four drill rods are respectively inserted into the drilled holes to longitudinally block the two PE butt joint pipes, further preventing the PE butt joint pipe from being longitudinally pulled off externally.

[0018] 3. By setting the elastic rubber sleeve, the cylindrical sleeve of the elastic rubber sleeve contacts the inner wall of the drilled hole instead of the drill rod, playing a protective role and effectively preventing the drilled hole from being torn. At the same time, the annular sleeve can cover the gap between the drilled hole and the cylindrical sleeve inside the PE butt joint pipe. When the PE butt joint pipe conveys water, the annular sleeve will press the gap under the action of water pressure, effectively preventing the drilled hole from leaking.

[0019] 4. By setting the water-absorbing and swelling rubber sleeve, when the water pressure during water conveyance of the PE butt joint pipe is unstable, the water flow contains impurities, or problems such as aging, cracking, and corrosion occur in the elastic rubber sleeve, resulting in leakage of the drilled hole. At this time, the water-absorbing and swelling rubber sleeve at the top of the drill rod will closely adhere to the outer wall of the PE butt joint pipe and absorb the seepage water in the gap between the drilled hole and the elastic rubber sleeve, and start to swell, thereby sealing the gap from the outside, effectively preventing the problem of water seepage in this half coupling after long-term use.

[0020] 5. By setting the outer rubber sleeve, when drilling the pipe wall of the PE butt joint pipe, the spiral traveling guide screw will drive the extrusion block to gradually press the outer rubber sleeve, causing the outer rubber sleeve to deform and closely cover the top of the guide bushing, covering the mating gap between the guide bushing and the guide screw, closing the inside of the half-tube housing, and preventing the internal water seepage of the PE butt joint pipe or the external water accumulation of the half-tube housing from leaking into the inside of the half-tube housing.

[0021] 6. By providing a positioning lower housing and a positioning upper cover, the present invention enables the positioning lower housing and the positioning upper cover to be snapped onto two assembled locking ears, with the locking ears located in the receiving groove within the positioning lower housing. Multiple single screws are respectively passed through the relief slots on the positioning upper cover and screwed into the fastening threaded grooves, thereby locking the positioning upper cover onto the positioning lower housing. As a result, the positioning lower housing and the positioning upper cover protect the joint of the locking ears, effectively preventing the hexagon bolts from rusting and facilitating subsequent disassembly and maintenance.

[0022] 7. By providing a positioning slot, when locking the two locking ears, the hexagon nut can be first placed in the positioning slot, and then the two positioning lower housings can be snapped onto the bottoms of the two locking ears. Subsequently, hexagon screws can be inserted into a set of locking holes. At this time, the hexagon nut is limited by the positioning slot, and the staff only needs to tighten the hexagon screws without having to fix the nut again, greatly facilitating the assembly of the half-pipe housing.

[0023] 8. By providing a first sealing strip and a second sealing strip, when the positioning lower housing and the positioning upper cover are locked onto the locking ears, the gaps between the positioning lower housing, the positioning upper cover, and the locking ears are respectively filled by the positioning lower housing and the positioning upper cover, thereby improving the sealing performance inside the positioning lower housing and the positioning upper cover and further enhancing the protection performance of the positioning lower housing and the positioning upper cover for the hexagon bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0025] Figure 2 is a three-dimensional structural schematic diagram of the assembly of two half-pipe housings of the present invention;

[0026] Figure 3 is a three-dimensional structural schematic diagram of the cooperation between the half-pipe housing and the outer rubber sleeve of the present invention;

[0027] Figure 4 is the present invention Figure 3 structural schematic diagram at position A in;

[0028] Figure 5 is a three-dimensional structural schematic diagram of the half-pipe housing of the present invention from the first perspective;

[0029] Figure 6 is a three-dimensional structural schematic diagram of the half-pipe housing of the present invention from the second perspective;

[0030] Figure 7 is a three-dimensional structural schematic diagram of the longitudinal locking assembly of the present invention;

[0031] Figure 8 is a three-dimensional structural schematic diagram of the cooperation between the drill pipe and the elastic rubber sleeve of the present invention;

[0032] Figure 9 It is a schematic three-dimensional structure diagram of the positioning lower housing of the present invention;

[0033] Figure 10 It is a schematic three-dimensional structure diagram of the positioning upper cover of the present invention;

[0034] Reference numerals: 1, semi-tube housing; 2, docking pipe; 3, locking ear; 301, locking hole; 4, copper locking semi-ring; 5, rack-type rubber sleeve; 6, guiding bushing; 7, guiding screw; 8, extrusion block; 9, hexagon head; 10, drill pipe; 11, drill pipe cone head; 12, elastic rubber sleeve; 13, water-absorbing and expanding rubber sleeve; 14, outer rubber sleeve; 15, protective housing; 16, positioning lower housing; 1601, receiving groove; 1602, fastening thread groove; 1603, positioning slot; 1604, bolt receiving groove; 17, positioning upper cover; 1701, relief groove; 18, magnetic block; 19, first sealing strip; 20, second sealing strip. Detailed implementation manners

[0035] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0037] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, the terms "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0038] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "inner", "outer", "upper", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0039] Such asFigures 1 to 10 As shown in the figure, a PE locking split coupling for improving longitudinal locking ability includes two symmetrically arranged half-pipe shells 1. As Figure 1 shown, two PE docking pipes 2 are placed inside the two half-pipe shells 1. As Figure 2 shown, locking ears 3 are fixedly installed on both sides of the docking part of the two half-pipe shells 1. A plurality of uniformly distributed locking holes 301 are formed at the tops of the locking ears 3. In this embodiment, a set of hexagon bolts is inserted through the two locking holes 301 at the same position to lock the two locking ears 3, so that the two half-pipe shells 1 are assembled on the two docked PE docking pipes 2. As Figure 6 shown, copper locking half-rings 4 are fixedly installed on the inner walls at both ends of the half-pipe shell 1, and a plurality of rack-type rubber sleeves 5 are fixedly installed on the inner walls of the half-pipe shell 1 and are uniformly distributed along the axis of the half-pipe shell 1. In this embodiment, the copper locking half-ring 4 is of a serrated structure, and the rack-type rubber sleeve 5 is of a rack structure. Longitudinal locking components are arranged on the side walls of the half-pipe shell 1; specifically, when this PE locking split coupling is in use, first combine and buckle the two half-pipe shells 1 on the docking part of the two PE docking pipes 2 to be connected, so that the locking ears 3 at the two places are spliced with each other, and a set of hexagon bolts is assembled on the two locking holes 301 at each place for fastening, so that the half-pipe shell 1 is locked at the docking part of the two PE docking pipes 2. At this time, the two groups of copper locking half-rings 4 inside the two ends of the half-pipe shell 1 will be spliced and sleeved on the outer pipe wall of the PE docking pipe 2, so as to press the pipe wall, and the serrated structure of the copper locking half-ring 4 is used to longitudinally lock the PE docking pipe 2. At the same time, the rack-type rubber sleeve 5 inside the half-pipe shell 1 will elastically deform with the splicing of the half-pipe shell 1 and be extruded on the outer pipe wall of the half-pipe shell 1, also increasing the friction between the half-pipe shell 1 and the PE docking pipe 2, improving the longitudinal locking effect of the half-pipe shell 1 on the PE docking pipe 2, and preventing the PE docking pipe 2 from being pulled off due to external force;

[0040] The longitudinal locking components are used to respectively punch and lock one end of the two PE docking pipes 2. As Figure 5 shown, the locking components include two guide screw sleeves 6 respectively fixedly installed at both ends of the half-pipe shell 1. The axes of the two guide screw sleeves 6 are perpendicular to the axis of the half-pipe shell 1. As Figure 6 shown, one end of the guide screw sleeve 6 extends into the half-pipe shell 1. As Figure 7 shown, guide screws 7 are screwed inside the guide screw sleeves 6. One end of each guide screw 7 extends to the outside of the half-pipe shell 1 and is fixedly installed with an extrusion block 8. A hexagon head 9 is fixedly installed on the side of the extrusion block 8 facing away from the guide screw 7. As Figure 8As shown, drill pipes 10 are fixedly installed at the other ends of the guiding screw rods 7. One ends of the drill pipes 10 are located inside the half-pipe housing 1 and fixedly installed with drill pipe cone heads 11. In this embodiment, the drill pipe cone heads 11 can adopt a conical structure as shown in Figure 8 for drilling and locking of thin-walled PVC or PE pipes, or can also adopt a drill bit type structure for drilling and locking of thick-walled PVC or PE pipes. The hexagonal heads 9 are rotated by means of mechanical or electrical equipment. An elastic rubber sleeve 12 is fixedly sleeved on the drill pipe 10. In this embodiment, the elastic rubber sleeve 12 is in a cap shape structure and is divided into two upper and lower structures, namely a cylindrical sleeve and an annular sleeve. The top of the annular sleeve is in contact with the top of the drill pipe cone head 11, and the outer diameter dimension of the annular sleeve is larger than the outer diameter dimension of the largest circle of the drill pipe cone head 11. Specifically, by setting the longitudinal locking assembly, after the half-pipe housing 1 is assembled on the PE butt joint pipe 2, the two groups of a total of four hexagonal heads 9 are rotated in sequence, so that the guiding screw rods 7 travel bolt-like towards the inside of the half-pipe housing 1 along the guiding screw sleeves 6, and then the drill pipe cone heads 11 at the bottom ends of the drill pipes 10 drill into the outer pipe wall of the PE butt joint pipe 2 until the drill pipe cone heads 11 completely penetrate the pipe wall, and the four drill pipes 10 are respectively inserted into the drill holes to longitudinally block the two PE butt joint pipes 2, further preventing the PE butt joint pipes 2 from being longitudinally pulled off towards the outside. By setting the elastic rubber sleeve 12, after the drill pipe cone head 11 penetrates the pipe wall of the PE butt joint pipe 2, the drill pipe cone head 11 will continue to travel, causing the annular sleeve at the bottom of the elastic rubber sleeve 12 to be compressed and deformed until the elastic rubber sleeve 12 passes through the drill hole and resumes its shape to contact the inner pipe wall of the PE butt joint pipe 2, so that the cylindrical sleeve of the elastic rubber sleeve 12 contacts the inner wall of the drill hole instead of the drill pipe 10, playing a protective role and effectively preventing the drill hole from being torn. At the same time, the annular sleeve can cover the gap between the drill hole and the cylindrical sleeve inside the PE butt joint pipe 2. When the PE butt joint pipe 2 conveys water, the annular sleeve will press the gap tightly under the action of water pressure, effectively preventing the drill hole from leaking.

[0041] As Figure 8 shown, a water-absorbing and expanding rubber sleeve 13 is fixedly sleeved on the top end of the drill pipe 10, and the elastic rubber sleeve 12 is located between the water-absorbing and expanding rubber sleeve 13 and the drill pipe cone head 11. Specifically, by setting the water-absorbing and expanding rubber sleeve 13, when the water pressure during water conveyance of the PE butt joint pipe 2 is unstable, the water flow contains impurities, or problems such as aging, cracking, and corrosion occur to the elastic rubber sleeve 12, resulting in leakage of the drill hole. At this time, the water-absorbing and expanding rubber sleeve 13 at the top end of the drill pipe 10 will closely adhere to the outer pipe wall of the PE butt joint pipe 2 and absorb the seepage water in the gap between the drill hole and the elastic rubber sleeve 12, and start to expand, thereby sealing the gap from the outside and effectively preventing the problem of seepage of this half coupling after long-term use.

[0042] As Figure 4As shown, the guide screw 7 is located on one end outside the half-tube shell 1 and is movably sleeved with an outer rubber sleeve 14, and the outer rubber sleeve 14 is located between the guide screw sleeve 6 and the extrusion block 8; specifically, by arranging the outer rubber sleeve 14, when drilling a hole in the pipe wall of the PE docking pipe 2, the spirally moving guide screw 7 will drive the extrusion block 8 to gradually press the outer rubber sleeve 14, so that the outer rubber sleeve 14 is deformed and tightly covers the top of the guide screw sleeve 6, covering the matching gap between the guide screw sleeve 6 and the guide screw 7, so that the interior of the half-tube shell 1 is closed, preventing water from seeping into the PE docking pipe 2 or water from accumulating outside the half-tube shell 1 from leaking into the interior of the half-tube shell 1.

[0043] like Figure 1 , Figure 2 As shown, the guide screw 7 is located on one end outside the half-tube shell 1, and a protective shell 15 that is compatible with the outer rubber sleeve 14 is movably sleeved. The protective shell 15 is located on the top of the outer rubber sleeve 14; specifically, by setting the protective shell 15, when the extrusion block 8 descends, the protective shell 15 will be simultaneously pressed against the outer rubber sleeve 14, so that the protective shell 15 plays an external protective role on the outer rubber sleeve 14, and effectively prevents the outer rubber sleeve 14 from aging, hardening, cracking, corrosion and other problems.

[0044] like Figure 1 As shown, a positioning lower housing 16 is placed at the bottom of the two locking ears 3 located at the same place, as shown in FIG. Figure 9 As shown, a receiving groove 1601 adapted to the locking ear 3 is provided inside the positioning lower housing 16, and a plurality of fastening thread grooves 1602 are provided on the inner wall of the positioning lower housing 16. Figure 1 As shown, a positioning upper cover 17 is placed on the top of the positioning lower housing 16. Figure 10 As shown, the top of the positioning upper cover 17 is provided with a plurality of clearance grooves 1701 corresponding to the positions of the fastening thread grooves 1602. In this embodiment, the positioning upper cover 17 is locked with the positioning lower housing 16 by means of a plurality of single screws passing through the clearance grooves 1701 and being screwed with the fastening thread grooves 1602. Specifically, by providing the positioning lower housing 16 and the positioning upper cover 17, when the half-pipe housing 1 is assembled on the PE docking pipe 2, the positioning lower housing 16 can be locked. The positioning upper cover 17 is buckled on the two assembled locking ears 3, so that the locking ear 3 is located in the accommodating groove 1601 in the positioning lower shell 16, and a plurality of single screws are respectively passed through the giving groove 1701 on the positioning upper cover 17 and screwed into the fastening thread groove 1602, so that the positioning upper cover 17 is locked on the positioning lower shell 16, so that the positioning lower shell 16 and the positioning upper cover 17 protect the assembly of the locking ear 3, effectively prevent the hexagonal bolt from rusting, and facilitate subsequent disassembly and maintenance.

[0045] like Figure 9As shown, a plurality of positioning slots 1603 corresponding to the positions of the locking holes 301 are formed inside the accommodation groove 1601, and bolt storage grooves 1604 are formed at the bottoms of the positioning slots 1603. Specifically, by providing the positioning slots 1603, when locking the two locking ears 3, the hexagon nuts can be first placed in the positioning slots 1603, and then the two positioning lower housings 16 are snap-fitted to the bottoms of the two locking ears 3. Then, the hexagon screws can be inserted into a set of locking holes 301. At this time, the hexagon nuts are limited by the positioning slots 1603, and the staff only needs to tighten the hexagon screws without fixing the nuts anymore, which greatly facilitates the assembly of the half-pipe housing 1.

[0046] As Figure 9 shown, a plurality of magnetic attraction blocks 18 are fixedly installed on the inner wall of the positioning lower housing 16. In this embodiment, the magnetic attraction blocks 18 are installed on the inner wall of the positioning lower housing 16 in an embedded structure. Specifically, by providing the magnetic attraction blocks 18, when the positioning lower housing 16 is snap-fitted to the bottom of the locking ear 3, the positioning lower housing 16 will be automatically attracted to the bottom of the locking ear 3 under the magnetic attraction of the magnetic attraction blocks 18 without manual support by the staff, which further facilitates the assembly and locking of the half-pipe housing 1.

[0047] As Figure 9 shown, a first sealing strip 19 in contact with the locking ear 3 is fixedly installed on the inner wall of the positioning lower housing 16. As Figure 10 shown, a plurality of second sealing strips 20 in contact with the locking ear 3 and the positioning lower housing 16 are fixedly installed on the inner wall of the positioning upper cover 17. Specifically, by providing the first sealing strip 19 and the second sealing strip 20, when the positioning lower housing 16 and the positioning upper cover 17 are locked on the locking ear 3, the gaps between the positioning lower housing 16, the positioning upper cover 17 and the locking ear 3 will be filled by the positioning lower housing 16 and the positioning upper cover 17 respectively, thereby improving the sealing performance inside the positioning lower housing 16 and the positioning upper cover 17, and further improving the protection performance of the positioning lower housing 16 and the positioning upper cover 17 for the hexagon bolts.

[0048] In summary: When the PE locking split coupling is in use, first combine and buckle the two half-pipe shells 1 at the docking joint of the two PE docking pipes 2 to be connected, so that the locking ears 3 at the two places are spliced with each other, and a set of hexagon bolts is assembled on the two locking holes 301 at each place for fastening, so that the half-pipe shell 1 is locked at the docking joint of the two PE docking pipes 2. At this time, the two groups of copper locking half-rings 4 inside the two ends of the half-pipe shell 1 will be spliced and sleeved on the outer pipe wall of the PE docking pipe 2, thereby pressing the pipe wall, and the toothed structure of the copper locking half-ring 4 is used to longitudinally lock the PE docking pipe 2. At the same time, the rack-type rubber sleeve 5 inside the half-pipe shell 1 will elastically deform with the splicing of the half-pipe shell 1 and squeeze on the outer pipe wall of the half-pipe shell 1, also increasing the friction between the half-pipe shell 1 and the PE docking pipe 2, improving the longitudinal locking effect of the half-pipe shell 1 on the PE docking pipe 2, and preventing the PE docking pipe 2 from being pulled off due to external force. By setting the longitudinal locking assembly, after the half-pipe shell 1 is assembled on the PE docking pipe 2, rotate the four hexagon heads 9 in two groups in sequence, so that the guide screw 7 advances along the guide bushing 6 towards the internal bolt of the half-pipe shell 1, and then the drill pipe cone head 11 at the bottom of the drill rod 10 drills into the outer pipe wall of the PE docking pipe 2 until the drill pipe cone head 11 completely penetrates the pipe wall, so that the four drill rods 10 are respectively inserted into the drilled holes to longitudinally block the two PE docking pipes 2, further preventing the PE docking pipe 2 from being longitudinally pulled off towards the outside. By setting the elastic rubber sleeve 12, after the drill pipe cone head 11 penetrates the pipe wall of the PE docking pipe 2, the drill pipe cone head 11 will continue to advance, causing the annular sleeve at the bottom of the elastic rubber sleeve 12 to be compressed and deformed until the elastic rubber sleeve 12 passes through the drilled hole and resumes contact with the inner pipe wall of the PE docking pipe 2, so that the cylindrical sleeve of the elastic rubber sleeve 12 contacts the inner wall of the drilled hole instead of the drill rod 10, playing a protective role and effectively preventing the drilled hole from being torn. At the same time, the annular sleeve can cover the gap between the drilled hole and the cylindrical sleeve inside the PE docking pipe 2. When the PE docking pipe 2 conveys water, the annular sleeve will press the gap under the action of water pressure, effectively preventing the drilled hole from leaking. By setting the water-absorbing and expanding rubber sleeve 13, when the water pressure during water conveyance of the PE docking pipe 2 is unstable, the water flow contains impurities, or problems such as aging, cracking, and corrosion occur in the elastic rubber sleeve 12, resulting in leakage of the drilled hole. At this time, the water-absorbing and expanding rubber sleeve 13 at the top of the drill rod 10 will closely adhere to the outer pipe wall of the PE docking pipe 2 and absorb the seepage water in the gap between the drilled hole and the elastic rubber sleeve 12, and start to expand, thereby sealing the gap from the outside, effectively preventing the problem of water seepage in the split coupling after long-term use. By setting the outer rubber sleeve 14, when drilling the pipe wall of the PE docking pipe 2, the spiral advancing guide screw 7 will drive the extrusion block 8 to gradually press the outer rubber sleeve 14, causing the outer rubber sleeve 14 to deform and tightly cover the top of the guide bushing 6, covering the mating gap between the guide bushing 6 and the guide screw 7, and closing the inside of the half-pipe shell 1.Prevent water from seeping inside the PE butt-jointed pipe 2 or water from accumulating outside the semi-pipe shell 1 and leaking into the inside of the semi-pipe shell 1. By setting the protective shell 15, when the extrusion block 8 descends, the protective shell 15 will be simultaneously pressed tightly against the outer rubber sleeve 14, so that the protective shell 15 plays an external protection role for the outer rubber sleeve 14, effectively preventing problems such as aging, hardening, cracking, and corrosion of the outer rubber sleeve 14. By setting the positioning lower shell 16 and the positioning upper cover 17, when assembling the semi-pipe shell 1 on the PE butt-jointed pipe 2, the positioning lower shell 16 and the positioning upper cover 17 can be buckled on two assembled locking ears 3, so that the locking ears 3 are located in the receiving groove 1601 inside the positioning lower shell 16, and multiple single screws are respectively passed through the relief grooves 1701 on the positioning upper cover 17 and screwed into the fastening thread grooves 1602, so that the positioning upper cover 17 is locked on the positioning lower shell 16, thereby protecting the joint of the locking ears 3 by the positioning lower shell 16 and the positioning upper cover 17, effectively preventing the hexagon bolts from rusting, and facilitating subsequent disassembly and maintenance. By setting the positioning slot 1603, when locking the two locking ears 3, the hexagon nut can be first placed in the positioning slot 1603, and then the two positioning lower shells 16 are buckled on the bottoms of the two locking ears 3, and then the hexagon screws can be inserted into a set of locking holes 301. At this time, the hexagon nut is limited by the positioning slot 1603, and the staff only needs to tighten the hexagon screws without fixing the nut again, which greatly facilitates the assembly of the semi-pipe shell 1. By setting the magnetic attraction block 18, when the positioning lower shell 16 is buckled on the bottom of the locking ear 3, the positioning lower shell 16 will be automatically adsorbed on the bottom of the locking ear 3 under the magnetic attraction of the magnetic attraction block 18 without manual support by the staff, further facilitating the assembly and locking of the semi-pipe shell 1. By setting the first sealing strip 19 and the second sealing strip 20, when the positioning lower shell 16 and the positioning upper cover 17 are locked on the locking ear 3, the gaps between the positioning lower shell 16, the positioning upper cover 17 and the locking ear 3 will be filled by the positioning lower shell 16 and the positioning upper cover 17 respectively, thereby improving the sealing performance inside the positioning lower shell 16 and the positioning upper cover 17, and further improving the protection performance of the positioning lower shell 16 and the positioning upper cover 17 for the hexagon bolts.,

[0049] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A PE locking half joint with improved longitudinal locking capability, characterized in that: The invention comprises two symmetrically arranged half-tube shells (1), two PE butt-jointed pipes (2) are placed inside the two half-tube shells (1), locking ears (3) are fixedly installed on both sides of the butt joint of the two half-tube shells (1), and the top of each locking ear (3) is provided with a plurality of evenly distributed locking holes (301), copper locking half rings (4) are fixedly installed on the inner walls of both ends of the half-tube shells (1), a plurality of rack-type rubber sleeves (5) evenly distributed along the axis of the half-tube shells (1) are fixedly installed on the inner walls of the half-tube shells (1), and longitudinal locking components are arranged on the side walls of the half-tube shells (1); The longitudinal locking assembly is used to respectively perform hole punching and locking on one end of the two PE butt-jointed pipes (2). The locking assembly comprises two guide screw sleeves (6) respectively fixedly mounted on the two ends of the half-pipe shell (1). The axes of the two guide screw sleeves (6) are perpendicular to the axis of the half-pipe shell (1). One end of the guide screw sleeve (6) extends into the interior of the half-pipe shell (1). A guide screw (7) is screwed into the interior of the guide screw sleeve (6). One end of the guide screw (7) extends to the exterior of the half-pipe shell (1) and is fixedly mounted with an extrusion block (8). A hexagonal head (9) is fixedly mounted on one side of the extrusion block (8) facing away from the guide screw (7). A drill rod (10) is fixedly mounted on the other end of the guide screw (7). One end of the drill rod (10) is located in the interior of the half-pipe shell (1) and is fixedly mounted with a drill pipe cone head (11). An elastic rubber sleeve (12) is fixedly sleeved on the drill rod (10). A water-swelling rubber sleeve (13) is fixedly sleeved on the top of the drill pipe (10), the elastic rubber sleeve (12) is located between the water-swelling rubber sleeve (13) and the drill pipe cone head (11), and a positioning lower shell (16) is placed at the bottom of the two locking ears (3) located at the same place, and a receiving groove (1601) adapted to the locking ears (3) is provided inside the positioning lower shell (16), and a plurality of fastening thread grooves (1601) are provided on the inner wall of the positioning lower shell (16). 602), a positioning upper cover (17) is placed on the top of the positioning lower shell (16), a plurality of clearance grooves (1701) are provided on the top of the positioning upper cover (17) respectively corresponding to the positions of the fastening thread grooves (1602), a plurality of positioning slots (1603) are provided inside the receiving groove (1601) respectively corresponding to the positions of the locking holes (301), and a bolt receiving groove (1604) is provided at the bottom of each of the positioning slots (1603).

2. A PE locking half joint with improved longitudinal locking capability according to claim 1, characterized in that: An outer rubber sleeve (14) is movably sleeved on one end of the guide screw (7) located outside the half-tube housing (1), and the outer rubber sleeve (14) is located between the guide screw sleeve (6) and the extrusion block (8).

3. A PE locking half joint with improved longitudinal locking capability according to claim 2, characterized in that: A protective housing (15) adapted to the outer rubber sleeve (14) is movably sleeved on one end of the guide screw (7) located outside the half-tube housing (1), and the protective housing (15) is located on the top of the outer rubber sleeve (14).

4. A PE locking half joint with improved longitudinal locking capability according to claim 1, characterized in that: A plurality of magnetic blocks (18) are fixedly mounted on the inner wall of the positioning lower housing (16).

5. A PE locking half joint with improved longitudinal locking capability according to claim 1, characterized in that: A first sealing strip (19) in contact with the locking ear (3) is fixedly mounted on the inner wall of the positioning lower shell (16), and a plurality of second sealing strips (20) in contact with the locking ear (3) and the positioning lower shell (16) are fixedly mounted on the inner wall of the positioning upper cover (17).

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