Socket pipe jacking and its assembly method

Abstract

The present invention provides a socket-and-spigot pipe jacking and its assembly method, belonging to the technical field of jacking construction. It includes a socket, a spigot and a pipe body, and also includes a bearing ring. The bearing ring is an annular structure with an L-shaped cross-section. The A side of the bearing ring fits with the inner lining layer of the pipe body and is parallel to the axis of the pipe body. The B side of the bearing ring fits with the inner end face of the socket and is perpendicular to the axis of the pipe body, and is used to bear the axial force transmitted by the spigot of the adjacent pipe jacking during the jacking operation. The socket-and-spigot pipe jacking provided by the present invention can evenly disperse and transmit the jacking force at the end of the spigot to the socket, prevent stress concentration in the socket caused by the jacking force, and protect the quality of the socket during the connection operation. At the same time, the L-shaped shape of the bearing ring reduces the inner diameter of the socket, and the spigot abuts against the B side of the bearing ring, which can effectively prevent the spigot from moving inward and ensure the coaxiality when two pipe jackings are connected.

Description

Technical Field

[0001] The present invention belongs to the technical field of pipe jacking construction, and more specifically, relates to a socket and spigot pipe jacking and its assembly method. Background Art

[0002] With the development of urban construction, the trenchless technology for underground space has been increasingly emphasized and widely applied. How to install and replace urban water supply, drainage, gas and communication facilities with the least damage to the urban environment poses new requirements for underground engineering construction technology.

[0003] The pipe jacking construction technology is a trenchless technology for laying underground pipelines that can better protect the environment. Under the condition of not disturbing or slightly disturbing the soil layer structure outside the pipe, with the thrust of jacking equipment such as the main jacking oil pump, the tool pipe or tunneling machine is pushed through the soil layer along the line from the working well into the receiving well; at the same time, the pipes following closely are sequentially connected and buried in the pipeline soil layer connecting the two wells.

[0004] In the actual construction process, adjacent pipe jackings are connected by inserting the spigot into the socket, that is, the spigot of the previous pipe jacking is inserted into the socket of the next pipe jacking to achieve connection. After the spigot of the previous pipe jacking is inserted into the socket of the next pipe jacking, the end face of the spigot abuts against the inner end face of the socket. The acting surface of the spigot end is small, and the jacking force directly acts on the inner end face of the socket. When the jacking force is too large, it will cause damage to the socket and also cause the spigot to move inward, affecting the coaxiality of the connection between the two pipe jackings and reducing the construction efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a socket and spigot pipe jacking and its assembly method, aiming to solve the technical problems that the socket of the existing pipe jacking connection is easily damaged and the spigot is easily displaced inward.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is: providing a socket and spigot pipe jacking, including a socket, a spigot and a pipe body, and further including:

[0007] A bearing ring, which is an annular structure with an L-shaped cross-section;

[0008] The side A of the bearing ring fits with the inner lining layer of the pipe body and is parallel to the axis of the pipe body;

[0009] The side B of the bearing ring fits with the inner end face of the socket and is perpendicular to the axis of the pipe body, and is used to receive the axial force transmitted by the spigot of the adjacent pipe jacking during the jacking operation.

[0010] As another embodiment of the present application, an annular groove with an opening facing the outer end face of the socket is provided on the side B of the bearing ring, and the groove is used to cooperate with the spigot of the adjacent pipe jacking.

[0011] As another embodiment of the present application, the socket pipe-jacking further includes:

[0012] A bearing gasket, which is a ring structure. The bottom surface of the bearing gasket is matched with the B side of the bearing ring, and is used to receive the axial force transmitted by the socket of the adjacent pipe-jacking during the jacking operation.

[0013] As another embodiment of the present application, the socket pipe-jacking further includes:

[0014] A bearing shoe, which is a ring structure. An annular groove with an opening facing the outer end face of the socket is provided on the bearing shoe. The groove is used to cooperate with the socket of the adjacent pipe-jacking, and the bottom surface of the bearing shoe is matched with the B side of the bearing ring.

[0015] As another embodiment of the present application, the groove is a U-shaped groove with an opening facing the outer end face of the socket.

[0016] As another embodiment of the present application, the socket pipe-jacking further includes:

[0017] A buffer sheet, which is a ring structure. The buffer sheet is arranged between the B side of the bearing ring and the inner end face of the socket, and is respectively fitted with the contact surface of the bearing ring and the inner end face of the socket.

[0018] As another embodiment of the present application, the bearing ring includes a plurality of arc-shaped parts arranged in an annular array, and adjacent arc-shaped parts are connected by a connecting device.

[0019] As another embodiment of the present application, a jacking structure for disassembling the arc-shaped part is provided on the arc-shaped part.

[0020] As another embodiment of the present application, the jacking structure is a bolt, and a threaded hole for cooperating with the bolt is provided on the arc-shaped part.

[0021] The beneficial effects of the socket and spigot pipe jacking provided by the present invention are as follows: Compared with the prior art, in the socket and spigot pipe jacking of the present invention, a load-bearing ring with an L-shaped cross-section is installed on the inner lining layer of the pipe body. The A side of the load-bearing ring is parallel to the axis of the pipe body, and the B side is perpendicular to the axis of the pipe body. After installation, the spigot of the adjacent pipe jacking is inserted into the socket of this pipe jacking, and the end of the spigot abuts against the B side of the load-bearing ring. Multiple pipe jackings connected according to the above connection method can be used for jacking construction. By setting a load-bearing ring with an L-shaped cross-section, when the spigot of the previous pipe jacking is jacked into the socket of the next pipe jacking, the acting surface at the end of the spigot is small, and the jacking force can be first transmitted to the B side of the load-bearing ring. The load-bearing ring has a certain stiffness, and the surface of the load-bearing ring in contact with the socket is a plane with a large acting surface, which can evenly disperse and transmit the jacking force at the end of the spigot to the socket, preventing stress concentration in the socket caused by the jacking force and protecting the quality of the socket during the connection operation. At the same time, the L-shaped shape of the load-bearing ring reduces the inner diameter of the socket. The spigot abuts against the B side of the load-bearing ring, which can effectively prevent the spigot from moving inward and ensure the coaxiality when two pipe jackings are connected.

[0022] The present invention also provides a method for assembling a socket and spigot pipe jacking for forming the above-mentioned socket and spigot pipe jacking, including the following steps:

[0023] A. Fix the load-bearing ring at the front end of the socket;

[0024] B. Insert the spigot of the adjacent pipe jacking into the socket and make the end face of the spigot of the adjacent pipe jacking abut against the B side of the load-bearing ring;

[0025] C. Jack the installed multiple pipe jackings into the tunnel;

[0026] D. According to steps A - C, jack the next pipe jacking until all pipe jackings are completed for jacking construction.

[0027] As another embodiment of the present application, the load-bearing ring includes a plurality of arc-shaped parts arranged in a circular array. The step of fixing the load-bearing ring at the front end of the socket specifically includes:

[0028] Fix one of the arc-shaped parts at the front end of the socket;

[0029] Install the other arc-shaped parts in sequence to complete the installation of the load-bearing ring.

[0030] As another embodiment of the present application, after the step of jacking the next pipe jacking according to steps A - C until all pipe jackings are completed for jacking construction, it further includes:

[0031] E. After the jacking construction is completed, disassemble the arc-shaped parts in sequence to complete the removal of the load-bearing ring.

[0032] The beneficial effect of the socket-and-spigot jacking pipe assembly method provided by the present invention is that: compared with the prior art, the socket-and-spigot jacking pipe assembly method of the present invention first fixes the bearing ring at the front end of the socket, inserts the socket of the adjacent jacking pipe into the socket and makes the end face of the socket of the adjacent jacking pipe abut against the B side of the bearing ring, pushes the installed multiple jacking pipes into the tunnel, and repeats the above-mentioned installation steps to install the next jacking pipe until the jacking construction of all jacking pipes is completed. The socket-and-spigot jacking pipe assembly method of the present invention installs a bearing ring with a cross section of L at the connection of two adjacent jacking pipes, and the B side of the bearing ring is located between the socket and the socket of the two jacking pipes after connection, which plays the role of receiving the jacking force of the socket, protecting the connection operation and the quality of the socket during the jacking construction; at the same time, the L-shaped shape of the cross section of the bearing ring reduces the inner diameter of the socket, and the socket abuts against the B side of the bearing ring, which can effectively prevent the socket from running inward and ensure the coaxiality when the two jacking pipes are connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 A schematic diagram of the main structure of a socket-and-spigot jacking pipe provided in the first embodiment of the present invention;

[0035] Figure 2 A schematic cross-sectional view of the socket-and-spigot jacking pipe provided in the first embodiment of the present invention;

[0036] Figure 3 for Figure 2 A is a schematic diagram of the enlarged structure of the middle part;

[0037] Figure 4 A schematic cross-sectional view of the socket-and-spigot jacking pipe provided in the second embodiment of the present invention;

[0038] Figure 5 for Figure 4 A schematic diagram of the enlarged structure of B;

[0039] Figure 6 A schematic cross-sectional view of the socket-and-spigot jacking pipe provided in Embodiment 3 of the present invention;

[0040] Figure 7 for Figure 6 Schematic diagram of the enlarged structure of C in the middle;

[0041] Figure 8 This is a schematic diagram of the socket-and-spigot connection of the pipe body adopted in the fourth embodiment of the present invention.

[0042] In the figure: 1, socket; 2, pipe body; 3, spigot; 4, bearing ring; 5, side B; 6, side A; 7, card slot; 8, bearing gasket; 9, bearing boot; 10, buffer sheet; 11, arc portion; 12, connecting device; 121, connecting plate; 122, first bolt; 13, installation groove; 14, pushing structure; Specific Embodiment

[0043] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0044] Please refer to Figures 1 to 8 for an illustration of the push-pull pipe provided by the present invention. The push-pull pipe includes a socket 1, a pipe body 2 and a spigot 3, and also includes a bearing ring 4. The bearing ring 4 is a ring-shaped structure with an L-shaped cross-section; the side A 6 of the bearing ring 4 fits with the inner lining of the pipe body 2 and is parallel to the axis of the pipe body 2; the side B 5 of the bearing ring 4 fits with the inner end face of the socket 1 and is perpendicular to the axis of the pipe body 2, and is used to receive the axial force transmitted by the spigot 3 of the adjacent push-pull pipe during the jacking operation.

[0045] It is worth noting that the side A 6 or the side B 5 is a ring-shaped structure respectively.

[0046] Compared with the prior art, for the push-pull pipe provided by the present invention, a bearing ring 4 with an L-shaped cross-section is installed on the inner lining of the pipe body 2 of the push-pull pipe of the present invention. The side A 6 of the bearing ring 4 is parallel to the axis of the pipe body 2, and the side B 5 is perpendicular to the axis of the pipe body 2. After installation, the spigot 3 of the adjacent push-pull pipe is inserted into the socket 1 of this push-pull pipe, and the end of the spigot 3 is abutted against the side B 5 of the bearing ring 4. Multiple push-pull pipes connected according to the above connection method can be used for jacking construction. By setting the bearing ring 4 with an L-shaped cross-section in the push-pull pipe of the present invention, when the spigot 3 of the previous push-pull pipe is jacked into the socket 1 of the next push-pull pipe, the acting surface at the end of the spigot 3 is small, and the jacking force can be first transmitted to the side B 5 of the bearing ring 4. The bearing ring 4 has a certain rigidity, and the surface of the bearing ring 4 in contact with the socket 1 is a plane, and the acting surface is large, so that the jacking force at the end of the spigot 3 can be evenly dispersed and transmitted to the socket 1, preventing stress concentration in the socket 1 caused by the jacking force and protecting the quality at the socket 1 during the connection operation; at the same time, the L-shaped shape of the bearing ring 4 reduces the inner diameter of the socket 1, and the spigot 3 abuts against the side B 5 of the bearing ring 4, which can effectively prevent the spigot 3 from moving inward and ensure the coaxiality when two push-pull pipes are connected.

[0047] As a specific embodiment of the push-pull pipe provided by the present invention, please refer to Figures 4 to 5, on the B side 5 of the load-bearing ring 4, there is an annular card slot 7 with an opening facing the outer end face of the socket 1. The card slot 7 is used to cooperate with the socket 3 of the adjacent jacking pipe. When the adjacent jacking pipes are inserted and mated with this jacking pipe, the socket 3 of the previous jacking pipe is inserted into the socket 1 of this jacking pipe, and the end of the socket 3 is clamped in the card slot 7 on the B side 5 of the load-bearing ring 4. By fixing the socket 3 through the card slot 7, it can effectively prevent the socket 3 from moving inward; the card slot 7 can also play a role in positioning the socket 3, so that after the socket 3 of the adjacent jacking pipe is inserted into the socket 1, its axis is on the same straight line as the axis of this jacking pipe, that is, it ensures the coaxiality after the two jacking pipes are connected. If the coaxiality is insufficient, it will cause the internal force direction of the jacking pipe to be unstable during jacking construction and damage, thus ensuring the service life of the jacking pipe.

[0048] As a specific embodiment of the socket-and-spigot jacking pipe provided by the present invention, please refer to Figures 6 to 7 , the socket-and-spigot jacking pipe further includes a load-bearing gasket 8. The load-bearing gasket 8 is a ring structure. The bottom surface of the load-bearing gasket 8 cooperates with the B side 5 of the load-bearing ring 4 and is used to bear the axial force transmitted by the socket 3 of the adjacent jacking pipe during the jacking operation. When the socket 3 of the adjacent jacking pipe is inserted into the socket 1 of this jacking pipe, the end of the socket 3 abuts against the load-bearing gasket 8. Generally, a chamfer is provided at the end of the socket 3. When the jacking force is too large, the socket 3 inserted into the socket 1 will tend to move inward. During this process, if the chamfer on the socket 3 of the adjacent jacking pipe directly acts on the load-bearing ring 4, it will cause damage to the side surface of the B side 5 of the load-bearing ring 4 facing the socket 3 of the adjacent jacking pipe. The setting of the load-bearing gasket 8 can enable it to directly bear the jacking force transmitted by the socket 3 of the adjacent jacking pipe, protect the quality of the load-bearing ring 4, and improve the service life of the load-bearing ring 4.

[0049] Preferably, the load-bearing gasket 8 is a wooden gasket, and the manufacturing cost of the wooden gasket is relatively low; moreover, when the wooden gasket bears the jacking force on the socket 3 of the adjacent jacking pipe, due to the flexible characteristics of its material, it plays a role in directly bearing the jacking force between the socket 3 and the load-bearing ring 4, and then the force transmitted to the load-bearing ring 4 becomes smaller. Through a matching form of the combination of the load-bearing gasket 8 and the load-bearing ring 4, a larger jacking force can be borne (compared with the maximum jacking force that can be borne by the form with only the load-bearing ring 4); specifically, the cross-sectional shape of the load-bearing gasket 8 can be a quadrilateral, for example: rectangle, trapezoid, as long as the two side surfaces of the load-bearing gasket 8 can respectively fit the B side 5 of the load-bearing ring 4 and the socket 3 of the adjacent jacking pipe, it can ensure the installation stability of the load-bearing gasket 8, and further ensure the connection stability between the two jacking pipes.

[0050] As a specific embodiment of the socket-and-spigot jacking pipe provided by the present invention, please refer to Figures 2 to 3, the socket and spigot pipe jacking further includes a bearing shoe 9. The bearing shoe 9 is of an annular structure. An annular clamping groove 7 with an opening facing the outer end face of the socket 1 is provided on the bearing shoe 9. The clamping groove 7 is used to cooperate with the spigot 3 of the adjacent pipe jacking. The bottom surface of the bearing shoe 9 cooperates with the B side 5 of the bearing ring 4. When the adjacent pipe jacking is inserted and cooperated with this pipe jacking, the spigot 3 of the previous pipe jacking is inserted into the socket 1 of this pipe jacking, and the end of the spigot 3 is clamped in the clamping groove 7 of the bearing shoe 9. By fixing the spigot 3 through the clamping groove 7, the inward movement of the spigot 3 can be effectively prevented; the clamping groove 7 can also play a role in positioning the spigot 3, so that after the spigot 3 of the adjacent pipe jacking is inserted into the socket 1, its axis is on the same straight line as the axis of this pipe jacking, that is, the coaxiality after the connection of the two pipe jackings is ensured. If the coaxiality is insufficient, it will cause the internal force direction of the pipe jacking to be unstable during the jacking construction and damage, thus ensuring the service life of the pipe jacking.

[0051] Preferably, the bearing shoe 9 is a rigid member, which can directly bear the jacking force transmitted on the spigot 3 and has a long service life. The combination form of the bearing shoe 9 and the bearing ring 4 can bear a greater jacking force (compared with the maximum jacking force that the combination form of the bearing gasket 8 and the bearing ring 4 can bear), and the applicable working conditions are wider.

[0052] As a specific embodiment of the socket and spigot pipe jacking provided by the present invention, please refer to Figures 2 to 5 , the clamping groove 7 is a U-shaped groove with an opening facing the outer end face of the socket 1. The U-shaped clamping groove 7 can have more fitting surfaces with the end of the spigot 3 of the adjacent pipe jacking, improving the accuracy of positioning the adjacent pipe jacking; after the spigot 3 is inserted into the U-shaped clamping groove 7, the end faces on its inner and outer sides are in contact with the two straight faces of the U-shaped clamping groove 7, preventing the pipe jacking after connection from shaking, being beneficial to the stability of the connection between the pipe jackings, and further improving the jacking construction efficiency; at the same time, the two straight faces of the U-shaped clamping groove 7 are parallel to the axis of the pipe body 2, which can ensure that the axis of the adjacent pipe jacking spigot 3 is on the same straight line as the axis of this pipe jacking after insertion, ensuring the coaxiality.

[0053] As a specific embodiment of the socket and spigot pipe jacking provided by the present invention, please refer to Figures 2 to 7, the socket-and-spigot pipe jacking further includes a buffer sheet 10. The buffer sheet 10 is of an annular structure and is arranged between the B side 5 of the bearing ring 4 and the inner end face of the socket 1, and is respectively fitted with the contact surface of the bearing ring 4 and the inner end face of the socket 1. Preferably, the buffer sheet 10 is a flexible member, for example, a wood gasket, etc.; during installation, first stick the buffer sheet 10 on the inner end face of the socket 1, and then install the bearing ring 4, so that the side surface of the B side 5 of the bearing ring 4 close to the inner end face of the socket 1 is fitted with the contact surface of the buffer sheet 10, and then install a bearing gasket 8 or a bearing shoe 9 on the side surface of the B side 5 of the bearing ring 4 close to the outer end face of the socket 1. After installation, connect the pipe jackings, so that the spigot 3 ends of adjacent pipe jackings abut against the bearing gasket 8 or the bearing shoe 9 to complete the connection between the pipe jackings; by providing a buffer sheet 10 between the bearing ring 4 and the inner end face of the socket 1, a buffering effect is provided to prevent the B side 5 of the bearing ring 4 from directly acting on the inner end face of the socket 1, protect the quality of the inner lining layer of the socket 1, and improve the service life of the pipe jacking.

[0054] Specifically, the cross-sectional shape of the buffer sheet 10 can be quadrilateral, circular or elliptical.

[0055] As a specific embodiment of the socket-and-spigot pipe jacking provided by the present invention, please refer to Figures 2 to 7 , the bearing ring 4 includes a plurality of arc-shaped parts 11 arranged in an annular array, and adjacent arc-shaped parts 11 are connected by a connecting device 12. During installation, first install an arc-shaped part 11 on the inner layer of the pipe body 2, then install an adjacent arc-shaped part 11, and connect the two installed arc-shaped parts 11 together through the connecting device 12. Follow this step until all the arc-shaped parts 11 are installed to form the bearing ring 4. The outer ring of the B side 5 of the installed bearing ring 4 abuts against the inner layer of the socket 1 to realize the stable installation of the bearing ring 4; at the same time, the bearing ring 4 is convenient to disassemble and install, and there is no need to perform operations such as welding inside the pipe body 2, preventing the welding operation from reducing the strength of the pipe body 2 and improving the service life of the pipe jacking.

[0056] Preferably, the bearing ring 4 includes three arc-shaped parts 11 arranged in an annular array. When installing the bearing ring 4, first install an arc-shaped part 11 at the front end of the socket 1, then install the second arc-shaped part 11, connect the two arc-shaped parts 11 through the connecting device 12, and finally install the third arc-shaped part 11. Just connect a connecting device 12 between the third arc-shaped part 11 and the second arc-shaped part 11 or the first arc-shaped part 11.

[0057] As a specific embodiment of the socket-and-spigot pipe jacking provided by the present invention, please refer to Figures 2 to 7, the connecting device 12 includes a connecting plate 121 and a first bolt 122. The connecting plate 121 is provided with a first threaded hole, and the 4A side 6 of the bearing ring is provided with a second threaded hole corresponding to the first threaded hole. The connecting plate 121 is arranged inside the connection of two adjacent arc-shaped parts 11; the first bolt 122 is connected to the first threaded hole and the second threaded hole. When installing two adjacent arc-shaped parts 11, first place the B side 5 of one arc-shaped part 11 into the installation groove 13, then rotate the pipe body 2 to make the placed arc-shaped part 11 at the bottom, place another arc-shaped part 11 in the installation groove 13 on one side thereof, place the connecting plate 121 at the docking position of the two arc-shaped parts 11, tighten the first bolt 122 at one end of the connecting plate 121 to fix the connecting plate 121 to the first arc-shaped part 11, and then tighten the first bolt 122 at the other end of the connecting plate 121 to fix the connecting plate 121 to the other arc-shaped part 11, completing the assembly of the two arc-shaped parts 11. Repeat this step until the assembly of the bearing ring 4 inside the socket 1 is completed. This kind of connection structure is simple and easy to operate, reducing the labor intensity; the plate-shaped connection structure formed by the connecting plate 121 at the docking position of the two arc-shaped parts 11 is beneficial to the stability of the connection between the two adjacent arc-shaped parts 11, thereby improving the stability of the entire bearing ring 4, and can well withstand the jacking force from the previous jacking pipe socket 3, extending the service life of the jacking pipe.

[0058] In this embodiment, each end of the connecting plate 121 has a first threaded hole, one is an oblong hole, and the other is a circular hole. When two adjacent arc-shaped parts 11 are butted, the distance between the two second threaded holes is not necessarily always a fixed value and may have deviations. By adjusting the left and right of the bolt on the oblong first threaded hole, it can adapt to the two second threaded holes with different distances, reducing the installation difficulty.

[0059] As a specific implementation manner of the socket-and-spigot jacking pipe provided by the present invention, please refer to Figures 2 to 7 , an installation groove 13 for installing the bearing ring 4 is provided at a position near the front end of the socket 1, and the outer peripheral surface of the B side 5 of the bearing ring 4 abuts against the side surface of the installation groove 13 away from the axis of the pipe body 2. When installing the bearing ring 4, first place the B side 5 of the bearing ring 4 into the installation groove 13, then install the arc-shaped parts 11 one by one along the installation groove 13, and connect the two adjacent arc-shaped parts 11 through the connecting device 12; the bearing ring 4 composed of multiple arc-shaped parts 11 is detachably connected to the installation groove 13, and no indirect operations such as welding are required, which can avoid the influence of welding operations on the quality of the pipe body 2, and the clamping connection between the bearing ring 4 and the installation groove 13 can make the connection between the jacking pipes more firm.

[0060] As a specific implementation manner of the socket-and-spigot jacking pipe provided by the present invention, please refer to Figures 1 to 7, a pushing structure 14 for disassembling the arc portion 11 is provided on the arc portion 11. When the arc portion 11 is installed in the installation groove 13, the pushing structure 14 is in a disassembled state. After the arc portion 11 is installed, when it needs to be disassembled, the pushing structure 14 acts on the arc portion 11 for disassembly. After disassembly, the bearing ring 4 provides a disassembly space for the buffer sheets 10 and the bearing gaskets 8 or bearing boots 9 on both sides, facilitating the overall disassembly.

[0061] As a specific implementation manner of the socket pipe jacking provided by the present invention, please refer to Figures 1 to 7 , the pushing structure 14 is a bolt, and a threaded hole cooperating with the bolt is provided on the arc portion 11. When the arc portion 11 is installed on the installation groove 13, the bolt can be in an uninstalled state; when disassembling the arc portion 11, the bolt is screwed into the threaded hole. The outer periphery of the bolt is provided with an external thread. By screwing the bolt, the bolt is in threaded cooperation with the threaded hole, and one end of the ejected bolt abuts against the inner layer of the buffer sheet 10 or the inner layer of the pipe body 2. During the screwing process, the position of the threaded hole on the bolt gradually moves away from the inner wall of the pipe body 2, thereby driving the arc portion 11 to be removed from the installation groove 13. This disassembly method is convenient to operate; when one end of the bolt abuts against the bottom of the buffer sheet 10, the extrusion force does not directly act on the pipe body 2, protecting the quality of the pipe body 2 while facilitating disassembly, improving the service life of the pipe jacking, and the replacement cost of the buffer sheet 10 is relatively low, saving costs.

[0062] In this embodiment, one or more bolts are provided on each arc portion 11. When only one bolt is provided on an arc portion 11, only one bolt needs to be screwed to complete the removal of the corresponding arc portion 11; when multiple bolts are provided on an arc portion 11, after the first bolt is screwed a certain number of turns, the other bolts are screwed the same number of turns in sequence, and then the first bolt is screwed again, and so on, to achieve the disassembly of the arc portion 11, preventing the different ejection distances at different positions of the arc portion 11 from affecting the circularity of the formed ring structure and thus affecting the circularity of the adjacent pipe jacking sockets 3, and improving the coaxiality between two adjacent connected pipe jackings.

[0063] As a specific implementation manner of the socket pipe jacking provided by the present invention, please refer to Figures 1 to 7, the load-bearing gasket 8, the load-bearing shoe 9, and the buffer sheet 10 are all composed of multiple sheet bodies arranged in an annular array. Adjacent sheet bodies in the load-bearing gasket 8 or the load-bearing shoe 9 can be connected through the connecting device 12 or by bonding. During installation, first, bond the multiple sheet bodies belonging to the buffer sheet 10 to the side of the installation groove 13 close to the inner end face of the socket 1 in the order of installation in the installation groove 13, then install the load-bearing ring 4, and finally install the load-bearing gasket 8 or the load-bearing shoe 9. When the sheet bodies on the load-bearing gasket 8 or the load-bearing shoe 9 are connected through the connecting device 12, the installation steps of the load-bearing gasket 8 or the load-bearing shoe 9 are the same as those of the load-bearing ring 4; when the sheet bodies on the load-bearing gasket 8 or the load-bearing shoe 9 are connected by bonding, the installation steps of the load-bearing gasket 8 or the load-bearing shoe 9 are the same as those of the buffer sheet 10; the structures of the load-bearing gasket 8, the load-bearing shoe 9, and the buffer sheet 10 facilitate disassembly and assembly.

[0064] Please refer to Figures 1 to 7 , the present invention also provides a method for assembling a socket-and-spigot pipe jacking, which is used to form the above-mentioned socket-and-spigot pipe jacking, and includes the following steps: A. Fix the load-bearing ring 4 at the front end of the socket 1; B. Insert the spigot 3 of the adjacent pipe jacking into the socket 1 and make the end face of the spigot 3 of the adjacent pipe jacking abut against the B side 5 of the load-bearing ring 4; C. Jack the installed multiple pipe jackings into the tunnel; D. According to steps A-C, jack the next pipe jacking until all pipe jackings are jacked into place.

[0065] The method for assembling a socket-and-spigot pipe jacking provided by the present invention, compared with the prior art, first fixes the load-bearing ring 4 at the front end of the socket 1 in the method for assembling a socket-and-spigot pipe jacking of the present invention, inserts the spigot 3 of the adjacent pipe jacking into the socket 1 and makes the end face of the spigot 3 of the adjacent pipe jacking abut against the B side 5 of the load-bearing ring 4, jacks the installed multiple pipe jackings into the tunnel, and repeats the above installation steps to install the next pipe jacking until all pipe jackings are jacked into place. In the method for assembling a socket-and-spigot pipe jacking of the present invention, a load-bearing ring 4 with an L-shaped cross-section is installed at the connection between two adjacent pipe jackings. The B side 5 of the load-bearing ring 4 is located between the socket 1 and the spigot 3 of the two connected pipe jackings, which plays a role in bearing the jacking force of the spigot 3 and protecting the quality of the socket 1 during the connection operation and the jacking construction; at the same time, the L-shaped cross-section of the load-bearing ring 4 reduces the inner diameter of the socket 1, and the spigot 3 abuts against the B side 5 of the load-bearing ring 4, which can effectively prevent the spigot 3 from moving inward and ensure the coaxiality when two pipe jackings are connected.

[0066] As a specific embodiment of the method for assembling a socket-and-spigot pipe jacking provided by the present invention, please refer to Figures 1 to 7, the load-bearing ring 4 includes a plurality of arc-shaped parts 11 arranged in an annular array, and the load-bearing ring 4 is fixed to the front end of the socket 1. Specifically, it includes: fixing one of the arc-shaped parts 11 to the front end of the socket 1; installing the other arc-shaped parts 11 in sequence to complete the installation of the load-bearing ring 4. During installation, first install an arc-shaped part 11 on the inner layer of the pipe body 2, then install an adjacent arc-shaped part 11, and connect the two installed arc-shaped parts 11 together through the connecting device 12. Follow this step until all the arc-shaped parts 11 are installed to form the load-bearing ring 4. The outer ring of the B side 5 of the installed load-bearing ring 4 abuts against the inner layer of the socket 1, realizing the stable installation of the load-bearing ring 4; at the same time, the load-bearing ring 4 is convenient to disassemble and assemble, and there is no need to perform operations such as welding inside the pipe body 2, preventing the welding operation from reducing the strength of the pipe body 2 and increasing the service life of the jacking pipe.

[0067] As a specific implementation manner of the socket-and-spigot jacking pipe assembly method provided by the present invention, please refer to Figures 1 to 7 , according to steps A-C, jack in the next jacking pipe until all the jacking pipes are jacked in for construction. After that, it further includes: E. After the jacking construction is completed, disassemble the arc-shaped parts 11 in sequence to complete the removal of the load-bearing ring 4. When disassembling the arc-shaped parts 11, screw the bolt into the threaded hole. The outer periphery of the bolt is provided with an external thread. Turn the bolt, and the bolt is in threaded cooperation with the threaded hole. One end of the ejected bolt abuts against the inner layer of the buffer piece 10 or the inner layer of the pipe body 2. During the turning process, the position of the threaded hole on the bolt gradually moves away from the inner wall of the pipe body 2, thereby driving the arc-shaped part 11 to be removed from the installation groove 13. This disassembly method is convenient to operate.

[0068] For the installation of the overall jacking pipe, first paste each sheet of the buffer piece 10 in sequence on one side wall of the installation groove 13 close to the inner end face of the socket 1 to form the buffer piece 10. Then, snap the B side 5 of an arc-shaped part 11 into the installation groove 13, and make the side surface of the B side 5 of the arc-shaped part 11 facing away from the outer end face of the socket 1 abut against the side surface of the buffer piece 10 close to the outer end face of the socket 1. Install two adjacent arc-shaped parts 11 through the connecting device 12. After assembling the load-bearing ring 4, install each sheet of the load-bearing gasket 8 or the load-bearing shoe 9 in sequence on the side surface of the B side 5 of the load-bearing ring 4 close to the outer end face of the socket 1 to form the load-bearing gasket 8 or the load-bearing shoe 9. Finally, insert the spigot 3 end of the adjacent jacking pipe into the socket 1 of this jacking pipe and abut against the card slot 7 on the load-bearing gasket 8 or the load-bearing shoe 9 to complete the connection of two adjacent jacking pipes. The connection of other jacking pipes is the same as the above steps.

[0069] When disassembling, first screw the bolt into the threaded hole on the arc portion 11, turn the bolt, and the bolt is screwed into the A side 6 on the arc portion 11. One end of the bolt abuts against the inner layer of the buffer piece 10 or the inner layer of the pipe body 2. During the turning process, the position of the threaded hole on the bolt gradually approaches the axis of the pipe body 2, thereby driving the arc portion 11 to be removed from the installation groove 13. When the arc portion 11 is removed, an operating space is formed between the load-bearing shoe 9 and the buffer piece 10 (between the load-bearing gasket 8 and the buffer piece 10), and the buffer piece 10 can be removed by a tool. Finally, the load-bearing gasket 8 or the load-bearing shoe 9 is disassembled.

[0070] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. Socket and spigot pipe jacking, comprising a socket, a spigot and a pipe body, characterized in that, further comprising: a bearing ring, a ring structure with an L-shaped cross-section; The A side of the bearing ring fits with the inner lining layer of the pipe body and is parallel to the axis of the pipe body; The B side of the bearing ring fits with the inner end face of the socket and is perpendicular to the axis of the pipe body, and is used to receive the axial force transmitted by the spigot of the adjacent pipe during the jacking operation; The bearing ring includes a plurality of arc-shaped parts arranged in a circular array, and adjacent arc-shaped parts are connected by a connecting device; The connecting device includes a connecting plate and a first bolt. The connecting plate is provided with a first threaded hole, and the A side of the bearing ring is provided with a second threaded hole corresponding to the first threaded hole. The connecting plate is arranged inside the connection of adjacent two arc-shaped parts, and the first bolt is connected to the first threaded hole and the second threaded hole; There is one first threaded hole at each end of the connecting plate, one is an oblong hole and the other is a circular hole.

2. The socket and spigot pipe jacking according to claim 1, characterized in that, The B side of the bearing ring is provided with an annular groove with an opening facing the outer end face of the socket, and the groove is used to cooperate with the spigot of the adjacent pipe.

3. The socket and spigot pipe jacking according to claim 1, characterized in that, The socket and spigot pipe jacking further comprises: a bearing gasket, a ring structure, the bottom surface of the bearing gasket cooperates with the B side of the bearing ring, and is used to receive the axial force transmitted by the spigot of the adjacent pipe during the jacking operation.

4. The socket and spigot pipe jacking according to claim 1, characterized in that, The socket and spigot pipe jacking further comprises: a bearing shoe, a ring structure, the bearing shoe is provided with an annular groove with an opening facing the outer end face of the socket, the groove is used to cooperate with the spigot of the adjacent pipe, and the bottom surface of the bearing shoe cooperates with the B side of the bearing ring.

5. The socket and spigot pipe jacking according to claim 2 or 4, characterized in that, The groove is a U-shaped groove with an opening facing the outer end face of the socket.

6. The socket and spigot pipe jacking according to any one of claims 1-4, characterized in that, The socket and spigot pipe jacking further comprises: a buffer sheet, a ring structure, the buffer sheet is arranged between the B side of the bearing ring and the inner end face of the socket, and fits with the contact surface of the bearing ring and the inner end face of the socket respectively.

7. The socket and spigot pipe jacking according to claim 1, characterized in that, The arc-shaped part is provided with a jacking structure for disassembling the arc-shaped part.

8. The socket and spigot pipe jacking according to claim 7, characterized in that, The jacking structure is a bolt, and the arc-shaped part is provided with a threaded hole for cooperating with the bolt.

9. Socket and spigot pipe jacking assembly method, characterized in that, used to form the socket and spigot pipe jacking according to any one of claims 1-8, comprising the following steps: A. Fix the bearing ring at the front end of the socket; B. Insert the spigot of the adjacent pipe into the socket and make the end face of the spigot of the adjacent pipe abut against the B side of the bearing ring; C. Jack the installed multiple pipes into the tunnel; D. According to steps A-C, jack the next pipe until all the pipes are jacked and the construction is completed.

10. The socket pipe jacking assembly method according to claim 9, characterized in that, the bearing ring includes a plurality of arc-shaped parts arranged in a circular array, and the step of fixing the bearing ring to the front end of the socket specifically includes: fixing one of the arc-shaped parts to the front end of the socket; sequentially installing the other arc-shaped parts to complete the installation of the bearing ring.

11. The socket pipe jacking assembly method according to claim 10, characterized in that, according to steps A-C, jacking the next pipe jacking until all pipe jacking construction is completed, and then further including: E. After the jacking construction is completed, sequentially disassembling the arc-shaped parts to complete the removal of the bearing ring.

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