Segmental beam prefabricating and assembling self-positioning pipeline connector

Abstract

The utility model discloses a self-positioning pipeline connector for prefabricating and assembling a segmental beam. The self-positioning pipeline connector comprises a first connecting piece, a second connecting piece and a fastening piece for connecting the first connecting piece and the second connecting piece, each of the first connecting piece and the second connecting piece comprises a sleeve and a positioning end surface fixedly arranged at the end part of the sleeve; through holes matched with the fastening piece are formed in the positioning end surfaces of the first connecting piece and the second connecting piece; the fastener comprises a limiting cap, a limiting rod connected with the end face of the limiting cap and a buckling part located on the limiting rod, the limiting cap is connected to the through hole in the positioning end face of the second connecting piece in a clamped mode, and the buckling part sequentially penetrates through the two through holes and is connected with the through hole in the positioning end face of the first connecting piece in a clamped mode. According to the self-positioning pipeline connector for prefabricating and assembling the segmental beam, the fastener can be repeatedly used, the effects of positioning and fixing are achieved at the same time, and a positioning part or a positioning structure does not need to be additionally designed.

Description

Technical Field

[0001] The utility model relates to the technical field of precast and assembled segment beams, in particular to a self-positioning pipeline connector for precast and assembled segment beams. Background Art

[0002] During the precast and assembly process of segment beams, the positioning construction of corresponding segment beams is an important step in the assembly project. Due to steps such as concrete pouring and formwork installation during the construction process, the relative movement of corresponding segment beams is likely to occur, which will affect the splicing quality, sealing effect, and subsequent use of segment beams. Therefore, in the prior art, intermediate members such as sealing joints or plugs that are respectively matched with the through holes of connectors of corresponding segment beams at both ends are used to assist in positioning segment beams before pouring. In some prior arts, positioning structures such as positioning pins and positioning holes are also required. The positioning construction in the prior art requires additional design of positioning components or structures, resulting in a large number of components and a complex structure for the connector.

[0003] For example, a segment beam precast and assembled pipeline connector and installation method disclosed in Chinese Patent CN112031270A has a positioning method of inserting the sealing cylinder of the sealing connector into the end face position of the inner boss of the mating sleeve, and then inserting a cylindrical pin into the first pin hole on the positioning sleeve. With the sealing cone of the sealing connector as the rough guide and the cylindrical pin as the fine guide, the cylindrical pin on the installation positioning sleeve is inserted into the previously assembled sealing connector, pipeline sealing ring, pipe hoop, pipeline, and the whole of the mating sleeve is inserted into the second pin hole on the mating sleeve, thereby completing the positioning of the mating sleeve. The prestressed duct connector for segment assembled beams disclosed in Chinese Patent CN106049294B, when precasting and casting the segment, inserts the inner snap ring into the matching segment sleeve and clamps it tightly, then inserts a two-way plug, and then clamps the casting segment sleeve with the inner snap ring, thereby realizing the positioning of two segment beam connectors.

[0004] The positioning structures in the above prior arts only play a positioning role during the construction process, cannot achieve the fixing effect on corresponding segment beams, are prone to errors during the pouring process, and require additional design of positioning components or structures, resulting in a large number of components and a complex structure for the connector. Summary of the Utility Model

[0005] In view of the above problems, the utility model provides a self-positioning pipeline connector for precast and assembled segment beams, aiming to solve the problems in the prior art that the positioning structure of the connector cannot fix the segment beams, is prone to errors during the pouring process, and requires additional design of positioning components or structures, resulting in a large number of components and a complex structure for the connector.

[0006] The utility model adopts the following technical solutions to achieve the above purpose:

[0007] A self-aligning pipe connector for prefabricated and assembled segmental beams, comprising a first connecting member and a second connecting member respectively installed at opposite ends of a precast segmental beam and a newly cast segmental beam, and a fastener for connecting the first connecting member and the second connecting member; the first connecting member and the second connecting member respectively include a sleeve and a positioning end face fixed to the end of the sleeve; through holes matching the fastener are provided on the positioning end faces of the first connecting member and the second connecting member; the fastener includes a limit cap, a limit rod connected to the end face of the limit cap, and a snap portion located on the limit rod, the limit cap is snap-fitted into the through hole of the positioning end face of the second connecting member, the snap portion sequentially penetrates through the two through holes, and is snap-fitted with the through hole of the positioning end face of the first connecting member.

[0008] In this technical solution, the detachable connection between the first connecting member and the second connecting member is realized through the fastener. Before the newly cast segmental beam is poured, the positioning end face of the first connecting member is used as the end form of the newly cast segmental beam. The limit rod sequentially penetrates through the through holes of the second connecting member and the first connecting member from the end far away from the precast segmental beam. During the process, the snap portion is elastically deformed under the extrusion of the through hole. After the installation is completed, the resilience of the snap portion makes it return to the initial state, so as to clamp the positioning end faces of the first connecting member and the second connecting member at both ends with the limit cap, achieving the effects of positioning and fixing, and being able to avoid errors during the pouring process; after the newly cast segmental beam is cured, apply a pulling force greater than the resilience of the snap portion to separate the newly cast segmental beam and the precast segmental beam. The fastener is separated from the precast segmental beam along with the newly cast segmental beam, and the resilience of the snap portion makes it return to the initial state. After the segmental beam is transported to the construction site, the newly cast segmental beam is assembled to the precast segmental beam again through the fastener. Therefore, there is no need to additionally design positioning components or positioning structures, and the positioning components of the connector are simple.

[0009] A further technical solution is that the snap portion is an elastic barb distributed along the axial direction of the limit rod. This technical solution can adapt to connectors with positioning end faces of multiple sizes.

[0010] A further technical solution is that it further includes a first pipe inserted into the sleeve of the first connecting member, a first seal for sealing the first connecting member and the first pipe, a second pipe inserted into the sleeve of the second connecting member, a second seal for sealing the second connecting member and the second pipe, and a third seal for sealing the first connecting member and the second connecting member. This technical solution can achieve continuous full sealing of the prestressed pipe.

[0011] A further technical solution is that the first seal is a first heat shrinkable sleeve, and the first heat shrinkable sleeve is sleeved on the outside of the sleeve of the first connecting member and the first pipe; the second seal is a second heat shrinkable sleeve, and the second heat shrinkable sleeve is sleeved on the outside of the sleeve of the second connecting member and the second pipe.

[0012] A further technical solution is that the third seal is an O-ring installed with interference between the positioning end faces of the first connecting member and the second connecting member.

[0013] A further technical solution is that a positioning end face of one of the first connecting piece or the second connecting piece is provided with a groove that cooperates with the sealing ring. In this technical solution, when prestress is applied during the assembly of two segment beams, the sealing ring installed in the groove is in interference fit with the other positioning end face, forming a sealed area at the joint.

[0014] A further technical solution is that the inner walls of the sleeves of the first connecting piece and the second connecting piece are respectively provided with positioning steps that cooperate with the ends of the first pipe and the second pipe. It is used to position the insertion depth of the corresponding pipe.

[0015] A further technical solution is that a reinforcing rib is provided between the outer wall of the sleeve of the first connecting piece and the positioning end face. It is used to strengthen the rigidity of the positioning end face.

[0016] A further technical solution is that the fastener is also used to fixedly connect the casting end mold of the precast segment beam. By utilizing the detachable and reusable characteristics of the fastener, it can be reused respectively when casting two segment beams and assembling two segment beams. Without additional design of positioning tools, self-positioning at the joint of the prestressed ducts of the segment beam can be achieved.

[0017] A further technical solution is that the limit cap is provided with a marking structure for marking the installation angle when the fastener is reinstalled.

[0018] The beneficial effects of the present utility model are as follows:

[0019] A self-positioning pipe connector for precast segment beam assembly provided by the present utility model realizes the detachable connection between the first connecting piece and the second connecting piece through the fastener. After installation, the limit cap and the buckle part clamp the positioning end faces of the first connecting piece and the second connecting piece at both ends, achieving the effects of positioning and fixing, and can avoid errors during the casting process; the fastener has the characteristics of being detachable and reusable, and can be reused in the positioning steps of casting and assembling two segment beams. Without additional design of positioning components or positioning structures, the positioning components of the connector are simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is: a structural schematic diagram of the self-positioning pipe connector of the present utility model.

[0021] Figure 2 It is: a structural schematic diagram of the fastener of the present utility model.

[0022] Figure 3 It is: a structural schematic diagram of the first connecting piece of the present utility model.

[0023] Figure 4 It is: a structural schematic diagram of the second connecting piece of the present utility model.

[0024] Figure 5 It is: the structural schematic diagram of the first connecting piece and the formwork of the present utility model.

[0025] Figure 6 It is: the structural schematic diagram of the precast segment beam of the present utility model.

[0026] Figure 7 It is: the structural schematic diagram of installing the second connecting piece with the first positioning end face as the end form of the present utility model.

[0027] Figure 8 It is: the structural schematic diagram of the newly cast segment beam of the present utility model.

[0028] Figure 9 It is: the structural schematic diagram of the first sleeve with a plug cap of the present utility model.

[0029] Figure 10 It is: the structural schematic diagram of the pipe connector with a plug cap of the present utility model.

[0030] In the figure:

[0031] 1. Precast segment beam; 10. First through hole; 101. Plug cap; 11. First sleeve; 12. First positioning end face; 13. First pipe; 14. First heat shrinkable sleeve; 15. Reinforcing rib; 16. First positioning step; 20. Second through hole; 21. Second sleeve; 22. Second positioning end face; 23. Second pipe; 24. Second heat shrinkable sleeve; 25. Groove; 26. Second positioning step; 3. Fastener; 31. Limit cap; 32. Limit rod; 33. Elastic barb; 34. Sealing ring; 4. End form. Detailed implementation manners

[0032] The following combines the attached Figures 1 to 10 drawings and specific implementation manners to elaborate on the present utility model in detail. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0033] Such as Figures 1 to 4As shown in the figure, this embodiment discloses a self - positioning pipe connector for prefabricated and assembled segmental beams, which includes a first connecting piece and a second connecting piece respectively installed at the opposite ends of the prefabricated segmental beam 1 and the newly - cast segmental beam 2, and a fastener 3 for connecting the first connecting piece and the second connecting piece; wherein, both the first connecting piece and the second connecting piece are hollow structures, which are used to communicate with the corresponding pipes to form a prestressed duct; specifically, the first connecting piece includes a first sleeve 11 and a first positioning end face 12 fixed to the end of the first sleeve 11, the second connecting piece includes a second sleeve 21 and a second positioning end face 22 fixed to the end of the second sleeve 21, the first end face 12 and the second positioning end face 22 are arranged opposite to each other, and are respectively provided with a first through - hole 10 and a second through - hole 20 for cooperating with the fastener 3; the fastener 3 includes a limit cap 31, a limit rod 32 fixedly connected to the end face of the limit cap 31, and a snap - fit portion located on the limit rod 32. After installation, the limit cap 31 is snap - fitted into the second through - hole 20, and the snap - fit portion sequentially passes through the second through - hole 20 and the first through - hole 10 and is snap - fitted with the first through - hole 10.

[0034] After the connector of this embodiment is installed, the limit cap 31 and the snap - fit portion clamp the first positioning end face 12 and the second positioning end face 22 at both ends, achieving the effects of positioning and fixing, and can avoid errors during the pouring process; before the newly - cast segmental beam 2 is poured, the first positioning end face 12 is used as the end form of the newly - cast segmental beam 2, and the limit rod 32 sequentially passes through the second through - hole 20 and the first through - hole 10 from the end far away from the prefabricated segmental beam 1. During this process, the snap - fit portion undergoes elastic deformation under the extrusion of the through - hole. After installation, the resilience of the snap - fit portion makes it return to its initial state, so as to clamp the first positioning end face 11 and the second positioning end face 12 with the limit cap at both ends. After the newly - cast segmental beam 2 is cured, a pulling force greater than the resilience of the snap - fit portion is applied to separate the newly - cast segmental beam 2 and the prefabricated segmental beam 1. The fastener 3 is detached from the prefabricated segmental beam 1 along with the newly - cast segmental beam 2, and the resilience of the snap - fit portion makes it return to its initial state. After the segmental beam is transported to the construction site, the newly - cast segmental beam 2 is assembled to the prefabricated segmental beam 1 again through the fastener 3. The detachable connection between the first connecting piece and the second connecting piece is realized through the fastener 3. By utilizing the characteristic of the repeated use of the fastener 3, it can be reused in the positioning steps of pouring and assembling the newly - cast segmental beam 2. There is no need to design additional positioning components or positioning structures, and the positioning components of the connector are simple.

[0035] Another embodiment, on the basis of the above - mentioned embodiment, as Figure 2As shown in the figure, the buckling part is the elastic barb 33 distributed along the axial direction of the limiting rod 32. The resilience of the elastic barb 33 is used to prevent the limiting rod 32 from detaching from the through hole. In this embodiment, multiple elastic barbs 33 distributed along the axial direction of the limiting rod 32 are used as the buckling part, which can adapt to the connector working conditions with different thicknesses of the positioning end face. During the installation process, the elastic barb 33 penetrates the through hole and is subjected to the extrusion force along the penetration direction, causing the elastic barb 33 to undergo elastic deformation towards the limiting rod 32. After penetration, the resilience of the elastic barb 33 makes it return to the initial state. The elastic barb closest to the end face of the first through hole 10 clamps the first positioning end face 12 and the second positioning end face 22 with the limiting cap. During the disassembly process, the elastic barb 33 is subjected to the extrusion force in the opposite direction to the above-mentioned direction, undergoes elastic deformation and then passes through the through hole. After disassembly, its resilience makes it return to the initial state, which is convenient for reuse.

[0036] In another embodiment, on the basis of the above embodiment, the connector further includes a first pipe 13 inserted into the first sleeve 11, a first seal for sealing the first connector and the first pipe 13, a second pipe 23 inserted into the second sleeve 21, a second seal for sealing the second connector and the second pipe 23, and a third seal for sealing the first connector and the second connector. Specifically, the first seal is a first heat-shrinkable sleeve 14 provided on the outside of the first sleeve 11 and the first pipe 13. The second seal is a second heat-shrinkable sleeve 24 sleeved on the outside of the second sleeve 21 and the second pipe 23. When the heat-shrinkable sleeve is heated, the softened bonding ring presses on the outer surfaces of the sleeve and the pipe. The third seal is a sealing ring 34 press-fitted between the first positioning end face 12 and the second positioning end face 22. The sealing structure of this embodiment can achieve continuous full sealing of the prestressed pipe.

[0037] The installation steps of the connector in this embodiment are as follows:

[0038] Step 1, as Figure 5 shown in the figure, insert the first pipe 13 into the first sleeve 11, and then heat the first heat-shrinkable sleeve 14 to make its softened bonding ring press on the outer surfaces of the first pipe 13 and the first sleeve 11.

[0039] Step 2, fix and install the end mold 4 on the first positioning end face 12 through the fastener 3, fix and install the first pipe 13 on the steel reinforcement cage of the segment beam, and pour concrete.

[0040] Step 3, as Figure 6 shown in the figure, after curing, remove the fastener 3 and the end mold 4 to make the precast segment beam 1.

[0041] Step 4: Use the first positioning end face 12 of the precast segment beam 1 as the end form of the newly cast segment beam 2. First, insert the second pipeline 23 into the second sleeve 21, and then heat the second heat shrinkable sleeve 24 to soften its bonding ring and press it against the outer surfaces of the second pipeline 23 and the first sleeve 21.

[0042] Step 5: As Figure 7 shown, use the fastener 3 removed in Step 3 to fixedly install the second positioning end face 22 onto the first positioning end face 12.

[0043] Step 6: Fix the second pipeline 23 onto the steel reinforcement cage of the segment beam, and pour the concrete of the newly cast segment beam 2.

[0044] Step 7: As Figure 8 shown, after completing the curing work, remove the formwork and separate the two segments to make the newly cast segment beam 2.

[0045] Step 8: After transporting the precast segment beam 1 and the newly cast segment beam 2 to the construction site, install the sealing ring 34 between the first positioning end face 12 and the second positioning end face 22.

[0046] Step 9: Then apply epoxy resin glue on the concrete surface at the segment beam assembly end. While assembling the two segment beams by external force, compress and deform the sealing ring 34 to complete the continuous sealing of the entire prestressed duct.

[0047] The above embodiments exemplarily show the specific structures of the first seal, the second seal, and the third seal. In other embodiments or actual applications, other specific seals can also be used for replacement. For example, the first seal and the second seal can also use an interference - fitted sealing ring between the inner wall of the sleeve and the outer wall of the pipeline to achieve sealing, and the third seal can use a polymer foaming material to achieve the sealing between the two positioning end faces.

[0048] To facilitate the installation of the sealing ring in the above embodiments, based on the above embodiments, the second positioning end face 22 is provided with a groove 25 that cooperates with the sealing ring 34. When prestress is applied during the assembly process of the precast segment beam 1 and the newly cast segment beam 2, the sealing ring 34 installed in the groove 25 is in interference fit with the first end face 12 to form a sealing area at the joint. In addition, the groove can also be opened on the first positioning end face 12.

[0049] Also, to facilitate positioning the insertion depths of the first pipeline 13 and the second pipeline 23 into the corresponding sleeves, based on the above embodiments, the first sleeve 11 and the second sleeve 21 are respectively provided with a first positioning step 16 and a second positioning step 26 that cooperate with the ends of the corresponding pipelines. When the pipeline is inserted in place, the end of the pipeline abuts against the corresponding positioning step.

[0050] In order to strengthen the rigidity of the first positioning end face 12, on the basis of the above-described embodiment, a reinforcing rib 15 is provided between the outer wall of the first sleeve 11 and the first positioning end face 12.

[0051] In another embodiment, on the basis of the above-described embodiment, during the casting process of the precast segment beam 1, the end form 4 needs to be fixedly connected to the first positioning end face 12, and then the production is completed through processes such as casting concrete, curing, and removing the form. Among them, the end form 4 and the first positioning end face 12 are fixedly connected by a fastener 3, that is, the end form 4 is also provided with a through hole that matches the first positioning end face 12. When removing the form, a pulling force greater than the resilience of the fastener 3 is applied to separate the fastener 3 from the first positioning end face 12 and the end form 4. By utilizing the detachable and reusable characteristics of the fastener 3, it can be reused respectively when casting two segment beams and assembling two segment beams, and self-positioning at the joint of the prestressed duct of the segment beam can be achieved without additionally designing a positioning tool.

[0052] In order to further improve the positioning accuracy when the fastener 3 is reinstalled, the limit cap 31 is provided with a marking structure, and this marking structure can be a groove or a marking line or other structures that can identify the direction. In step 2 of the above-described embodiment, a marking line is drawn or a groove is opened on the limit cap 31 to identify the installation direction of the fastener 3 during the first use, so as to determine the installation direction and angle of the fastener 3 during the second use in step 5.

[0053] In order to further improve the convenience of installing the fastener 3, as Figure 9 、 Figure 10 shown, a plug cap 101 adapted to the position of the first through hole 10 is fixedly provided on the back of the first positioning end face 12. The plug cap 101 has a structure such as a cuboid, a cylinder, or a cone with one open end, and its open end is communicated with the first through hole 10. The plug cap 101 is used to prevent the fastener 3 from bonding with the concrete during concrete casting. In this embodiment, there is no need to adopt the limit cap 31 with a marking structure in the above-described embodiment, which is more conducive to the disassembly and assembly of the fastener 3 and also improves the construction convenience.

[0054] A segment beam precast and assembled self-positioning pipe connector provided by the present utility model realizes the detachable connection between the first connecting member and the second connecting member through the fastener 3. After the installation is completed, the limit cap 31 and the buckle portion clamp the first positioning end face 12 and the second positioning end face 22 at both ends, achieving the effects of positioning and fixing, and can avoid errors during the casting process; the fastener 3 has the characteristics of being detachable and reusable, and can be reused in the positioning steps of casting and assembling two segment beams, without additionally designing positioning components or positioning structures, and the positioning components of the connector are simple.

Claims

1. A segmental beam prefabrication and assembly self - positioning pipeline connector, characterized in that It includes a first connecting piece and a second connecting piece respectively installed at the opposite ends of a precast segment beam and a newly cast segment beam, and a fastener for connecting the first connecting piece and the second connecting piece; the first connecting piece and the second connecting piece respectively include a sleeve and a positioning end face fixed at the end of the sleeve. Through holes matched with the fastener are provided on the positioning end faces of the first connecting piece and the second connecting piece. The fastener includes a limit cap, a limit rod connected to the end face of the limit cap, and a snap part located on the limit rod. The limit cap is clamped in the through hole of the positioning end face of the second connecting piece, and the snap part sequentially penetrates through the two through holes and is clamped with the through hole of the positioning end face of the first connecting piece.

2. The segment beam prefabrication and assembly self-aligning pipe connector according to claim 1, characterized in that, The snap part is an elastic barb axially distributed along the limit rod.

3. The segment beam prefabrication and assembly self-positioning pipe connector according to claim 1, characterized in that, It also includes a first pipe inserted into the sleeve of the first connecting piece, a first seal for sealing the first connecting piece and the first pipe, a second pipe inserted into the sleeve of the second connecting piece, a second seal for sealing the second connecting piece and the second pipe, and a third seal for sealing the first connecting piece and the second connecting piece.

4. The segment beam prefabrication and assembly self - positioning pipeline connector according to claim 3, characterized in that, The first seal and the second seal are respectively a first heat shrinkable sleeve and a second heat shrinkable sleeve. The first heat shrinkable sleeve is sleeved on the outside of the sleeve of the first connecting piece and the first pipe, and the second heat shrinkable sleeve is sleeved on the outside of the sleeve of the second connecting piece and the second pipe.

5. The segment beam prefabrication and assembly self-aligning pipe connector according to claim 3, characterized in that, The third seal is an O-ring press-fitted between the positioning end faces of the first connecting piece and the second connecting piece.

6. The segment beam prefabrication and assembly self-aligning pipe connector according to claim 5, characterized in that A groove matched with the O-ring is provided on the positioning end face of one of the first connecting piece and the second connecting piece.

7. The segmental beam prefabrication and assembly self-aligning pipeline connector according to claim 3, characterized in that, Positioning steps matched with the ends of the first pipe and the second pipe are respectively provided on the inner walls of the sleeves of the first connecting piece and the second connecting piece.

8. The segment beam prefabrication and assembly self-aligning pipeline connector according to claim 3, characterized in that, Reinforcing ribs are provided between the outer wall of the sleeve of the first connecting piece and the positioning end face.

9. The segment beam prefabrication and assembly self - positioning pipe connector according to claim 1, characterized in that, The fastener is also used for fixedly connecting the casting end form of the precast segment beam.

10. The segment beam prefabrication and assembly self-aligning pipeline connector according to claim 9, characterized in that, The limit cap is provided with a marking structure for marking the installation angle when the fastener is reinstalled.

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