Socket and spigot type jacking pipe

Abstract

The utility model belongs to the technical field of pipe jacking construction, and discloses a socket type jacking pipe. The connecting structure comprises pipe joints and a connecting piece, a socket pipe is arranged at one end of each pipe joint, a spigot pipe is arranged at the other end of each pipe joint, inserting holes are formed in the bearing end face of each socket pipe and the inserting end face of each spigot pipe, and the spigot pipe of one pipe joint is aligned with and inserted into the socket pipe of the other pipe joint; the connecting piece is arranged at the joint of the spigot pipe and the socket pipe, barb parts are arranged at the two ends of the connecting piece, the section shape of the barb parts is the same as that of the insertion holes, and the barb parts are in one-to-one correspondence and are clamped in the insertion holes in a limiting mode. According to the arrangement, the barb parts and the inserting holes are connected in the clamping mode, so that the barb parts are difficult to pull out after being inserted into the inserting holes, the mechanical resistance of connection of the two pipe sections is effectively increased, gaps are not prone to being generated between the pipe sections due to interference of the external environment, leakage of underground water is avoided, and the service life of the pipe sections is prolonged. And the connection stability between the pipe joints is also improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of jacking pipe construction design, and particularly relates to a socket type jacking pipe. Background Technique

[0002] At present, jacking pipe is one of the most common trenchless technologies for water conveyance pipelines. Under the condition of disturbing or slightly disturbing the soil layer structure outside the pipe, with the thrust of jacking equipment such as main jacking oil pumps, the tool pipe is pushed from the working well through the soil layer along the line into the connection well; at the same time, the pipes following closely behind are sequentially connected and buried in the pipeline soil layer connecting the two wells. However, the connection stability between the existing pipes is poor, and it is easy to be interfered by the external environment, resulting in gaps at the connection of the two sections of pipes, causing groundwater to penetrate into the pipes, and also greatly reducing the connection strength between the pipes.

[0003] Therefore, there is an urgent need for a socket type jacking pipe with high connection strength and sealing performance to solve the technical problems existing in the prior art. Content of the Utility Model

[0004] The purpose of the utility model is to provide a socket type jacking pipe, which can improve the sealing connection stability and enhance the structural strength at the same time.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The socket type jacking pipe includes pipe sections and connectors, wherein:

[0007] One end of the pipe section is a socket pipe, and the other end of the pipe section is a spigot pipe. Socket holes are provided on the receiving end face of the socket pipe and the insertion end face of the spigot pipe. The spigot pipe of one pipe section is aligned and inserted into the socket pipe of another pipe section.

[0008] The connector is arranged at the connection of the spigot pipe and the socket pipe. The two ends of the connector have barbs, and the cross-sectional shape of the barbs is the same as the cross-sectional shape of the socket holes. The barbs are correspondingly and limit-caught in the socket holes one by one.

[0009] Preferably, the socket holes include a first insertion hole and a second insertion hole. The first insertion hole is provided on the receiving end face of the socket pipe, and the second insertion hole is provided on the insertion end face of the spigot pipe.

[0010] The barb portion includes a first barb portion and a second barb portion that are mirror - arranged at both ends of the barb portion. The cross - sections of the first barb structure on the first barb portion and the second barb structure on the second barb portion are both triangular. The cross - sectional shape of the first barb portion is the same as the cross - sectional shape of the first insertion hole, and the cross - sectional shape of the second barb portion is the same as the cross - sectional shape of the second insertion hole.

[0011] Preferably, the first barb structure is an annular structure or a triangular sheet structure;

[0012] Also, the second barb structure is an annular structure or a triangular sheet structure, and both the first barb structure and the second barb structure are inclinedly arranged on the outer surface of the connecting piece.

[0013] Preferably, both the first barb structure and the second barb structure are annular structures.

[0014] Preferably, multiple first barb structures and multiple second barb structures are equally spaced on the outer surface of the connecting piece.

[0015] Preferably, the socket - type pipe jacking further includes a sealant layer, and the sealant layer is clamped at the joint interface between the receiving end face and the insertion end face.

[0016] Preferably, a first liquid sac and a second liquid sac are provided in both the first insertion hole and the second insertion hole. The first liquid sac is filled with epoxy resin liquid, and the second liquid sac is filled with a condensate liquid of polyamine, formaldehyde, and phenol. The first liquid sac and the second liquid sac are arranged to be pierceable, so that the epoxy resin liquid and the condensate liquid are mixed and solidified to form the sealant layer.

[0017] Preferably, annular sealing films are provided at the open end faces of the first insertion hole and the second insertion hole. A sealing hole that is oppositely arranged with both the first insertion hole and the second insertion hole is penetrated through the annular sealing film, and the inner diameter dimension of the sealing hole is smaller than the outer diameter dimensions of the first barb structure and the second barb structure.

[0018] Preferably, the annular sealing film is an annular rubber film.

[0019] Preferably, four of the sockets are circumferentially and equally spaced on both the receiving end face and the insertion end face. There are four connecting pieces, and one connecting piece is clamped between every two oppositely arranged sockets.

[0020] Advantages of the present utility model: In the above socket pipe jacking, the barbs at both ends of the connecting piece and the jacks at both ends of the pipe joint are connected by a snap connection. After the barbs are inserted into the jacks, it is difficult to pull them out, effectively increasing the mechanical resistance of the connection between two pipe joints, making it difficult for the pipe joints to generate gaps due to external environmental interference, thus avoiding groundwater leakage and improving the connection stability between the pipe joints. Description of the drawings

[0021] Figure 1 It is an exploded assembly view of the socket pipe jacking provided by an embodiment of the present utility model;

[0022] Figure 2 It is a structural view of the pipe joint provided by an embodiment of the present utility model;

[0023] Figure 3 It is a front view of the pipe joint provided by an embodiment of the present utility model;

[0024] Figure 4 It is Figure 1 The partial enlarged view at A in

[0025] In the figure:

[0026] 1. Pipe joint; 101. Jack; 1011. First socket hole; 1012. Second socket hole; 11. Socket pipe; 111. Receiving end face; 12. Spigot pipe; 121. Socket end face;

[0027] 2. Connecting piece; 21. Barb; 211. First barb; 2111. First barb structure; 212. Second barb; 2121. Second barb structure;

[0028] 3. Sealing glue layer; 31. First liquid sac; 32. Second liquid sac;

[0029] 4. Annular sealing film; 41. Sealing hole. Detailed implementation manners

[0030] The present utility model will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the sake of description, only parts related to the present utility model are shown in the drawings, rather than all structures.

[0031] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over", and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath", and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0033] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", and "left" are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.

[0034] The purpose of the present utility model is to overcome the deficiencies of current jacking pipes and provide a socket and spigot jacking pipe that is safe, applicable, simple, and efficient.

[0035] The present utility model solves the above technical problems through the following technical solutions: A socket and spigot jacking pipe includes a pipe section 1 and a connector 2. Among them, one end of the pipe section 1 is a socket pipe 11, and the other end of the pipe section 1 is a spigot pipe 12. The socket pipe 11, the pipe section 1, and the spigot pipe 12 are preferably fixedly connected by an integrally cast molding method to ensure the structural strength and stability of the pipe section 1. And jack holes 101 are provided on the receiving end face 111 of the socket pipe 11 and the insertion end face 121 of the spigot pipe 12. The connector 2 is arranged on the insertion end face 121 and the receiving end face 111, and both ends of the connector 2 have barbs 21. The barbs 21 correspond to the jack holes 101 one by one, and the cross-sectional shape of the barb 21 is the same as the cross-sectional shape of the jack hole 101.

[0036] Exemplarily, when two adjacent pipe sections 1 are connected, first, the barbed part 21 at one end of the connecting piece 2 is inserted into the jack 101 of the socket pipe 12 of one pipe section 1, and then the socket pipe 12 of one pipe section 1 is pressed into the inside of the spigot pipe 11 of another pipe section 1. The insertion end face 121 of the socket pipe 12 is fitted and connected to the receiving end face 111 of the spigot pipe 11, so as to ensure that the connection node of the socket pipe of this socket-and-spigot pipe jacking can transmit a certain axial pressure and bending moment. At the same time, the barbed part 21 at the other end of the connecting piece 2 can be directly inserted into the jack 101 of the spigot pipe 11 of another pipe section 1 to complete the fixed connection of the two pipe sections 1. In the above setting, the barbed part 21 and the jack 101 are connected by a snap connection method, so that it is difficult to pull out the barbed part 21 after it is inserted into the jack 101, thereby effectively increasing the mechanical resistance of the connection between the two pipe sections 1, making it difficult for gaps to occur between the pipe sections 1 due to external environmental interference, thus avoiding the leakage of groundwater and also improving the connection stability between the pipe sections 1.

[0037] Furthermore, in this embodiment, in the same pipe section 1, the outer diameter surfaces of the spigot pipe 11 and the socket pipe 12 are flush with the outer diameter surface of the pipe section 1, and the inner diameter surfaces of the spigot pipe 11 and the socket pipe 12 are also flush with the inner diameter surface of the pipe section 1. Through the above setting, the pipe section 1 is a cylindrical structure as a whole, and the spigot pipe 11 and the socket pipe 12 are both designed and manufactured into structures with the same cross-sectional shape. After the two are butted, the splicing can be completed, thus omitting the steps of setting the spigot pipe 11 and the socket pipe 12 with different cross-sectional shapes on the existing socket-and-spigot pipe jacking for the matching of male and female heads, thereby simplifying the construction process and avoiding the situation of construction difficulties or unstable connection caused by matching errors.

[0038] Even further, in this embodiment, referring to Figure 2 as shown, four jacks 101 are evenly spaced along the circumferential direction on both the receiving end face 111 and the insertion end face 121, and four connecting pieces 2 are provided. A connecting piece 2 is clamped between every two relatively arranged jacks 101 to meet the requirements for the connection stability between adjacent large-diameter pipe sections 1 under actual working conditions. Of course, it can be understood that in other embodiments, in order to adapt to the requirements for the connection stability of pipe sections 1 with different diameters, the number of jacks 101 and connecting pieces 2 can be adaptively changed according to the change of the diameter of the pipe section 1, so as to ensure that there is sufficient mechanical resistance between the pipe sections 1 on the basis of controlling costs. Therefore, the present utility model does not limit the number of jacks 101 and connecting pieces 2 provided.

[0039] Specifically, in this embodiment, the jack 101 includes a first insertion hole 1011 and a second insertion hole 1012. The first insertion hole 1011 is provided on the receiving end face 111, and the second insertion hole 1012 is provided on the insertion end face 121. The barb portion 21 includes a first barb portion 211 and a second barb portion 212 that are mirror-symmetrically arranged at both ends of the barb portion 21. The cross-sections of the first barb structure 2111 on the first barb portion 211 and the second barb structure 2121 on the second barb portion 212 are both triangular. The cross-sectional shape of the first barb portion 211 is the same as that of the first insertion hole 1011, and the cross-sectional shape of the second barb portion 212 is the same as that of the second insertion hole 1012. By providing the first barb portion 211 and the second barb portion 212 with triangular cross-sections, the first barb portion 211 and the second barb portion 212 can be more firmly embedded in the first insertion hole 1011 and the second insertion hole 1012. Compared with straight or serrated barb structures, they are more difficult to move or pull out, and thus have better stability, firmness, and anti-slip performance.

[0040] More specifically, both the first barb portion 211 and the second barb portion 212 are annular structures. The first barb portion 211 and the second barb portion 212 are both inclined and provided on the outer surface of the connecting member 2. The first barb portion 211 and the second barb portion 212 with annular cross-sections can effectively increase the contact area between the connecting member 2 and the pipe joint 1. Therefore, they can more comprehensively surround and embed on the contact surface and are more difficult to move or rotate. In addition, the first barb portion 211 and the second barb portion 212 with annular structures have stronger performance in bearing tensile and shear forces, thereby making the connection stability between adjacent pipe joints 1 better and the limiting effect more excellent.

[0041] It can be understood that in some other parallel embodiments, both the first barb portion 211 and the second barb portion 212 can also be triangular sheet-like structures. The setting of the triangular sheet-like structures enables the connecting member 2 to select different numbers of the first barb portion 211 and the second barb portion 212 according to needs to adapt to pipe joints 1 made of different materials, thereby helping to increase the flexibility and applicability in practical applications.

[0042] It should also be noted that in other parallel embodiments, on the same connecting member 2, an annular first barb portion 211 and a triangular sheet-like second barb portion 212 can also be provided simultaneously, or an annular second barb portion 212 or a triangular sheet-like first barb portion 211 can be provided simultaneously, so as to make the usage environment of the connecting member 2 more diverse and flexible. Therefore, the above four design methods of the connecting member 2 all fall within the scope of protection of the present invention.

[0043] More specifically, in this embodiment, a plurality of first barbed structures 2111 and a plurality of second barbed structures 2121 are evenly spaced on the outer surface of the connecting member 2 to ensure that both the first barbed structures 2111 and the second barbed structures 2121 can be evenly distributed on the pipe section 1, so as to evenly share the load and stress required for connection or fixation, thereby helping to avoid local stress concentration. While improving the structural strength and aesthetics of the connecting member 2, it can also improve the service durability and lifespan of the pipe fittings.

[0044] Optionally, the socket pipe jacking provided in this embodiment further includes a sealant layer 3, and the sealant layer 3 is clamped at the joint interface between the receiving end face 111 and the plugging end face 121 to further enhance the sealing performance between the two pipe sections 1.

[0045] Specifically, referring to Figure 3 As shown, a first liquid sac 31 and a second liquid sac 32 are provided in both the first plugging hole 1011 and the second plugging hole 1012. The first liquid sac 31 is filled with epoxy resin liquid, and the second liquid sac 32 is filled with a condensate liquid mixed by polyamine, formaldehyde, and phenol. During use, when one end of the connecting member 2 is first inserted into the second plugging hole 1012, the second barbed portion 212 at one end of the connecting member 2 can squeeze and sequentially pierce the first liquid sac 31 and the second liquid sac 32. At this time, the epoxy resin liquid and the condensate liquid can be mixed in the second plugging hole 1012 and can be quickly cured after a period of time. In this way, on the one hand, the connecting member 2 can be fixedly connected in the second plugging hole 1012, and on the other hand, the above-mentioned sealant layer 3 is formed, completely eliminating the gap between the second barbed portion 212 and the pipe section 1, and significantly enhancing the sealing performance between the connecting member 2 and the socket pipe 12. Then, the other end of the connecting member 2 is inserted into the first plugging hole 1011. Similarly, the first liquid sac 31 and the second liquid sac 32 pre-set in the first plugging hole 1011 can be pierced by the first barbed portion 211, so that the above-mentioned sealant layer 3 can be formed and solidified between the first barbed portion 211 and the socket pipe 12, thereby enhancing the sealing performance between the connecting member 2 and the socket pipe 12.

[0046] More specifically, referring to Figure 2 and Figure 4As shown, in this embodiment, an annular sealing film 4 is provided at the opening end faces of the first insertion hole 1011 and the second insertion hole 1012. A sealing hole 41 penetrating through the annular sealing film 4 and oppositely arranged with respect to both the first insertion hole 1011 and the second insertion hole 1012 is provided. The inner diameter of the sealing hole 41 is smaller than the outer diameters of the first barb structure 2111 and the second barb structure 2121. After the first barb structure 2111 or the second barb structure 2121 passes through the sealing hole 41 and enters the first insertion hole 1011, the sealing hole 41 can play a plugging role to prevent the mixed liquid from leaking out of the first insertion hole 1011 or the second insertion hole 1012.

[0047] Preferably, the annular sealing film 4 is an annular rubber film. The annular rubber film has good elasticity and plasticity, and can quickly return to its original state after being subjected to an extrusion force, thereby effectively filling the tiny gap between the insertion end face 121 and the receiving end face 111, ensuring the sealing performance, and also playing a certain buffering role to prevent hard contact between the two pipe sections 1 and guarantee the safety of the pipe section 1. In addition, the annular sealing film 4 is relatively common and easy to obtain, which is beneficial to reducing the production and manufacturing costs.

[0048] Thus, in the description of this specification, the descriptions referring to terms such as "some embodiments", "other embodiments", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0049] Obviously, the above embodiments of the present invention are merely examples given for clearly explaining the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Socket-type jacking pipe, characterized in that: It comprises a pipe joint (1) and a connecting piece (2), wherein: One end of the pipe section (1) is a socket pipe (11), and the other end of the pipe section (1) is a spigot pipe (12). A plug hole (101) is provided on the receiving end surface (111) of the socket pipe (11) and the plugging end surface (121) of the spigot pipe (12). The spigot pipe (12) of one pipe section (1) is aligned with and inserted into the inside of the socket pipe (11) of another pipe section (1). The connecting piece (2) is arranged at the connection between the plug pipe (12) and the socket pipe (11), and both ends of the connecting piece (2) have barbed parts (21). The cross-sectional shape of the barbed parts (21) is the same as the cross-sectional shape of the insertion hole (101), and the barbed parts (21) correspond one-to-one and are limitedly clamped in the insertion hole (101).

2. The socket-type jacking pipe according to claim 1, characterized in that: The plug hole (101) comprises a first plug hole (1011) and a second plug hole (1012); the first plug hole (1011) is arranged on the receiving end surface (111) of the socket pipe (11), and the second plug hole (1012) is arranged on the plug end surface (121) of the socket pipe (12); The barb portion (21) comprises a first barb portion (211) and a second barb portion (212) which are arranged at both ends of the barb portion (21) in a mirror-image manner, and the first barb structure (2111) on the first barb portion (211) and the second barb structure (2121) on the second barb portion (212) are both triangular in cross-section, the cross-sectional shape of the first barb portion (211) is the same as the cross-sectional shape of the first plug-in hole (1011), and the cross-sectional shape of the second barb portion (212) is the same as the cross-sectional shape of the second plug-in hole (1012).

3. The socket-type jacking pipe according to claim 2, characterized in that: The first barb structure (2111) is a ring-shaped structure or a triangular sheet-shaped structure; Furthermore, the second barb structure (2121) is a ring-shaped structure or a triangular sheet-shaped structure, and the first barb structure (2111) and the second barb structure (2121) are both obliquely arranged on the outer surface of the connecting member (2).

4. The socket-type jacking pipe according to claim 3, characterized in that: The first barb structure (2111) and the second barb structure (2121) are both annular structures.

5. The socket-type jacking pipe according to claim 2, characterized in that: A plurality of the first barb structures (2111) and a plurality of the second barb structures (2121) are arranged at even intervals on the outer surface of the connecting member (2).

6. The socket-type jacking pipe according to claim 2, characterized in that: The socket-and-spigot jacking pipe further comprises a sealing rubber layer (3), and the sealing rubber layer (3) is sandwiched at the joint interface between the receiving end surface (111) and the plugging end surface (121).

7. The socket-type jacking pipe according to claim 6, characterized in that: The first plug hole (1011) and the second plug hole (1012) are both provided with a first liquid capsule (31) and a second liquid capsule (32); the first liquid capsule (31) is filled with epoxy resin liquid, and the second liquid capsule (32) is filled with a condensate liquid of polyamine, formaldehyde and phenol; the first liquid capsule (31) and the second liquid capsule (32) are configured to be punctured so that the epoxy resin liquid and the condensate liquid are mixed and condensed to form the sealant layer (3).

8. The socket-type jacking pipe according to claim 7, characterized in that: An annular sealing membrane (4) is provided at the opening end surfaces of the first plug hole (1011) and the second plug hole (1012), and a sealing hole (41) is penetrated through the annular sealing membrane (4) and is arranged opposite to the first plug hole (1011) and the second plug hole (1012), and the inner diameter of the sealing hole (41) is smaller than the outer diameter of the first barb structure (2111) and the outer diameter of the second barb structure (2121).

9. The socket-type jacking pipe according to claim 8, characterized in that: The annular sealing membrane (4) is an annular rubber membrane.

10. The socket-type jacking pipe according to any one of claims 1 to 9, characterized in that: The receiving end surface (111) and the plugging end surface (121) are both provided with four insertion holes (101) at equal intervals along the circumferential direction, and four connecting pieces (2) are provided, with one connecting piece (2) being sandwiched between each two oppositely arranged insertion holes (101).

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