A deep well pipe jacking device

Abstract

The present invention relates to the technical field of open caisson pipe jacking, and provides a deep open caisson pipe jacking device, including a pipe jacking pipe body. Connection components for fixedly connecting two pipe jacking pipe bodies are arranged at both ends of the pipe jacking pipe body, and waterproof components are also arranged at both ends of the pipe jacking pipe body. The connection components include threaded jacks and threaded shafts. A plurality of the threaded jacks are arranged on one end face of the pipe jacking pipe body, a plurality of mounting holes are arranged on the other end face of the pipe jacking pipe body, and the threaded shafts are rotatably connected in the mounting holes. The threaded shafts are matched with the threaded jacks. The waterproof components include a waterproof annular plate and a waterproof annular groove. The waterproof annular plate is fixedly connected to one end face of the pipe jacking pipe body, and the waterproof annular groove is arranged on the other end face of the pipe jacking pipe body. When installing the two pipe jacking pipe bodies in the present invention, only the outer pipe jacking pipe body needs to be pushed, and the threaded shafts automatically screw into the threaded jacks to complete the installation work, which is convenient to use.

Description

Technical Field

[0001] The present invention relates to the technical field of open caisson pipe jacking, and specifically relates to a deep open caisson pipe jacking device. Background Art

[0002] Pipe jacking construction is a pipeline laying construction technology that involves little or no excavation. Pipe jacking method construction means generating thrust in a working pit with the help of a jacking device, overcoming the friction between the pipeline and the surrounding soil, jacking the pipeline into the soil according to the designed slope, and transporting the soil away. After one pipe is jacked into the soil layer, the second pipe is lowered and the jacking continues.

[0003] When the existing pipes for pipe jacking construction are in use, after one pipe jacking is completed, the non-jacked end often needs to be connected and cooperated with another pipe jacking. After the connection, the force is continued to be jacked in. Currently, there are mainly two connection methods between two pipe jackings. One is flange connection. The outer diameter value of the flange is larger than the outer diameter value of the pipe jacking. The flange will increase the friction between the pipe jacking and the tunnel, and more energy is required to push the pipe jacking. The other is threaded connection. One end of the pipe jacking is provided with an internal thread groove, and the other end is provided with an external thread. However, during installation, the pipe jacking needs to be continuously rotated. The volume and mass of the pipe jacking are relatively large, and the installation is very inconvenient. Therefore, a deep open caisson pipe jacking is needed to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a deep open caisson pipe jacking device, aiming to solve the problems mentioned in the background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: a deep open caisson pipe jacking device, including a pipe jacking body. At both ends of the pipe jacking body, there is a connection component for fixedly connecting two pipe jacking bodies. At both ends of the pipe jacking body, there is also a waterproof component for preventing water seepage at the connection of two pipe jacking bodies. The connection component includes a threaded socket and a threaded shaft. A plurality of the threaded sockets are arranged on one end face of the pipe jacking body. On the other end face of the pipe jacking body, there are a plurality of mounting holes. A threaded shaft is rotatably connected in the mounting hole, and the threaded shaft cooperates with the threaded socket. The waterproof component includes a waterproof annular plate and a waterproof annular groove. The waterproof annular plate is fixedly connected to one end face of the pipe jacking body. The waterproof annular groove is arranged on the other end face of the pipe jacking body. The waterproof annular plate cooperates with the waterproof annular groove, and the waterproof annular plate is sleeved outside a plurality of threaded shafts.

[0006] As a further aspect of the present invention, a plurality of the threaded shafts are circumferentially arrayed about the central axis of the jacking pipe body, and a plurality of the threaded jacks are also circumferentially arrayed about the central axis of the jacking pipe body. The numerical value of the number of the threaded shafts is the same as the numerical value of the number of the threaded jacks. The central axis of the threaded shaft is collinear with the central axis of the corresponding threaded jack. An inner bearing is fixedly installed at the inner end of the mounting hole. The inner hole of the bearing is fixedly connected to the outer side surface of the threaded shaft. The bearing is an angular contact ball bearing or a thrust roller bearing. Both the angular contact ball bearing and the thrust roller bearing can withstand large axial forces and radial forces.

[0007] As a further aspect of the present invention, a plurality of first through holes are provided at the inner end of the waterproof annular groove, and sealant is added to the waterproof annular groove through the first through holes to make the waterproof performance of the waterproof component better.

[0008] As a further aspect of the present invention, a limiting component for limiting and fixing the threaded shaft inserted into the threaded jack is further provided on the jacking device. The limiting component includes a limiting shaft and a limiting hole. The limiting hole is provided on the side surface of the threaded shaft. A second through hole is provided on the side surface of the mounting hole. The limiting shaft is movably installed in the second through hole. When the threaded shaft is inserted into the threaded jack and is in place, the central axis of the limiting hole is collinear with the central axis of the limiting shaft, and the limiting shaft can be inserted into the limiting hole to fix and limit the threaded shaft.

[0009] As a further aspect of the present invention, the second through hole is a threaded through hole, and the limiting shaft is a screw. After the screw is inserted into the limiting hole, sealant is added to the threaded through hole to prevent water seepage in the threaded through hole.

[0010] As a further aspect of the present invention, lubricating oil is applied to the outer surface of the threaded shaft and the inner side surface of the threaded jack. A dustproof sleeve is sleeved on the outer side of the threaded shaft. A second dustproof member is provided at the outer end of the threaded jack, and the second dustproof member is detachable.

[0011] As a further aspect of the present invention, a first dustproof member is provided at the outer end of the waterproof annular groove, and the first dustproof member is detachable. A third dustproof member is provided at the outer end of the first through hole, and the third dustproof member is detachable.

[0012] As a further aspect of the present invention, a waterproof layer is provided on the outer side surface of the jacking pipe body, and a steel bar reinforcement layer is provided on the inner side of the jacking pipe body.

[0013] As a further aspect of the present invention, a lifting hole for facilitating the handling of the jacking pipe body is provided on the outer surface of the jacking pipe body.

[0014] In summary, the beneficial effects of the present invention are as follows: When installing the two jacking pipe bodies in the present invention, only the outer jacking pipe body needs to be pushed, and the threaded shaft automatically screws into the threaded socket, completing the installation work, which is convenient to use. Moreover, the connection structures in the present invention are all arranged inside the jacking pipe body and will not add additional resistance to the jacking pipe body. During specific use, align the threaded shaft on one jacking pipe body with the threaded socket on the other jacking pipe body. At this time, the waterproof annular plate on one jacking pipe body also aligns with the waterproof annular groove on the other jacking pipe body. Then, apply a thrust to the jacking pipe body to make the two jacking pipe bodies approach each other. At this time, all the threaded shafts start to rotate until they are completely screwed into the threaded sockets, completing the docking work of the two jacking pipe bodies. At the same time, the waterproof annular plate will insert into the waterproof annular groove, and the inner side surfaces of the waterproof annular plate and the waterproof annular groove are in close contact, preventing water seepage at the connection of the two jacking pipe bodies. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings, where:

[0016] Figure 1 It is a schematic diagram of the internal structure of a deep well jacking pipe device according to an embodiment of the present invention.

[0017] Figure 2 It is a schematic diagram of the connection structure of a deep well jacking pipe device according to an embodiment of the present invention.

[0018] Figure 3 is Figure 2 a partial enlarged schematic diagram of part A in

[0019] Figure 4 is Figure 1 a partial enlarged schematic diagram of part B in

[0020] Figure 5 is Figure 1 a partial enlarged schematic diagram of part C in

[0021] Reference numerals: 1 - jacking pipe body, 2 - threaded shaft, 3 - threaded socket, 4 - waterproof annular groove, 5 - lifting hole, 6 - limiting shaft, 7 - waterproof annular plate, 8 - steel bar reinforcement layer, 9 - waterproof layer, 10 - bearing, 11 - first through hole, 12 - first dust-proof part, 13 - second dust-proof part, 14 - third dust-proof part, 15 - mounting hole, 16 - limiting hole, 17 - dust-proof sleeve, 18 - second through hole, 20 - sealant. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] To make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific 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.

[0023] The following describes in detail the specific implementation of the present invention in conjunction with specific embodiments.

[0024] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown in

[0025] 、 a deep well pipe jacking device provided by an embodiment of the present invention includes a pipe jacking pipe body 1. Connecting components for fixedly connecting two pipe jacking pipe bodies 1 are provided at both ends of the pipe jacking pipe body 1. Waterproof components for preventing water seepage at the connection of the two pipe jacking pipe bodies 1 are also provided at both ends of the pipe jacking pipe body 1. The connecting components include threaded jacks 3 and threaded shafts 2. A plurality of the threaded jacks 3 are provided on one end face of the pipe jacking pipe body 1. A plurality of mounting holes 15 are provided on the other end face of the pipe jacking pipe body 1. A threaded shaft 2 is rotatably connected in the mounting hole 15. The threaded shaft 2 cooperates with the threaded jack 3. The waterproof components include a waterproof annular plate 7 and a waterproof annular groove 4. The waterproof annular plate 7 is fixedly connected to one end face of the pipe jacking pipe body 1. The waterproof annular groove 4 is provided on the other end face of the pipe jacking pipe body 1. The waterproof annular plate 7 cooperates with the waterproof annular groove 4. The waterproof annular plate 7 is sleeved outside a plurality of threaded shafts 2.

[0025] It should be noted that pipe jacking construction is a pipeline laying construction technology that does not excavate or excavates less. The pipe jacking method of construction is to generate a jacking force by means of jacking equipment in the working pit, overcome the friction between the pipeline and the surrounding soil, jack the pipeline into the soil according to the designed slope, and transport the soil away. After one pipe is jacked into the soil layer, the second pipe is lowered and jacked in continuously. Its principle is to use the thrust of the main jacking cylinder and between the pipelines and the relay room, etc., to push the tool pipe or tunneling machine from the working pit through the soil layer and push it into the receiving pit to be lifted. The pipeline follows the tool pipe or tunneling machine and is buried between the two pits. When the existing pipelines for pipe jacking construction are in use, it is often necessary to connect the non-jacked end with another pipe jacking pipe after one pipe jacking is completed, and continue to jack in after the connection. Currently, there are mainly two connection methods between two pipe jackings. One is to use flange connection. The outer diameter value of the flange is larger than the outer diameter value of the pipe jacking. The flange will increase the friction between the pipe jacking and the tunnel, and more energy is consumed when pushing the pipe jacking. The other is to use threaded connection. One end of the pipe jacking is provided with an internal thread groove, and the other end of the pipe jacking is provided with an external thread. However, when installing, the pipe jacking needs to be rotated continuously. The volume and mass of the pipe jacking are large, and the installation is very inconvenient. The embodiment of the present invention aims to solve the above problems.

[0026] In an embodiment of the present invention, several of the threaded shafts 2 are arranged in a circumferential array about the center line of the pipe jacking pipe body 1, and several of the threaded jacks 3 are also arranged in a circumferential array about the center line of the pipe jacking pipe body 1. The numerical value of the number of the threaded shafts 2 is the same as the numerical value of the number of the threaded jacks 3. The center line of the threaded shaft 2 is collinearly arranged with the center line of the corresponding threaded jack 3. A bearing 10 is fixedly installed at the inner end of the installation hole 15, and the inner hole of the bearing 10 is fixedly connected to the outer side surface of the threaded shaft 2. The bearing 10 is an angular contact ball bearing or a thrust roller bearing. Both the angular contact ball bearing and the thrust roller bearing can withstand large axial forces and radial forces. During use, the threaded shaft 2 on one pipe jacking pipe body 1 is aligned with the threaded jack 3 on another pipe jacking pipe body 1. At this time, the waterproof annular plate 7 on one pipe jacking pipe body 1 is also aligned with the waterproof annular groove 4 on another pipe jacking pipe body 1. Then, a thrust is applied to the pipe jacking pipe body 1 to make the two pipe jacking pipe bodies 1 approach each other. At this time, all the threaded shafts 2 start to rotate until they are completely screwed into the threaded jacks 3, completing the docking of the two pipe jacking pipe bodies 1. At the same time, the waterproof annular plate 7 will be inserted into the waterproof annular groove 4, and the waterproof annular plate 7 is in close contact with the inner side surface of the waterproof annular groove 4, so that water will not seep at the connection of the two pipe jacking pipe bodies 1. When installing the two pipe jacking pipe bodies 1 in the present invention, only need to push the outer pipe jacking pipe body 1, and the threaded shaft 2 will automatically screw into the threaded jack 3 to complete the installation work, which is very convenient to use.

[0027] Refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 In an embodiment of the present invention, several first through holes 11 are provided at the inner end of the waterproof annular groove 4, and sealant 20 is added into the waterproof annular groove 4 through the first through holes 11 to make the waterproof performance of the waterproof component better. A first dust-proof member 12 is provided at the outer end of the waterproof annular groove 4, and the first dust-proof member 12 is detachable. A third dust-proof member 14 is provided at the outer end of the first through hole 11, and the third dust-proof member 14 is detachable.

[0028] In an embodiment of the present invention, it can be understood that when the waterproof annular plate 7 is inserted into the waterproof annular groove 4, there will be a tiny gap between the waterproof annular plate 7 and the inner surface of the waterproof annular groove 4, and water may seep through this gap. In the embodiment of the present invention, by providing the first through holes 11 and adding sealant 20 into the waterproof annular groove 4 through the first through holes 11, the sealant 20 can fill the tiny gap to make the waterproof performance of the waterproof component better. In addition, in order to prevent dust from entering the waterproof annular groove 4, a first dust-proof member 12 and a third dust-proof member 14 are provided. The dust-proof members can be patches or plugs.

[0029] Refer to Figure 1 、Figure 2 , Figure 3 , Figure 4 and Figure 5 , in an embodiment of the present invention, a limiting component for limiting and fixing the threaded shaft 2 inserted into the threaded socket 3 is further provided on the pipe jacking device. The limiting component includes a limiting shaft 6 and a limiting hole 16. The limiting hole 16 is arranged on the side surface of the threaded shaft 2. A second through hole 18 is arranged on the side surface of the mounting hole 15, and the limiting shaft 6 is movably installed in the second through hole 18; when the threaded shaft 2 is inserted into the threaded socket 3 and is in place, the center line of the limiting hole 16 is collinear with the center line of the limiting shaft 6. Inserting the limiting shaft 6 into the limiting hole 16 can fix and limit the threaded shaft 2. The second through hole 18 is a threaded through hole, and the limiting shaft 6 is a screw. After the screw is inserted into the limiting hole 16, sealant 20 is added to the threaded through hole so that the threaded through hole will not leak water.

[0030] In an embodiment of the present invention, the limiting shaft 6 can also be a pin shaft, and the second through hole 18 is a pin hole. After the limiting shaft 6 is inserted into the limiting hole 16, sealant 20 is added to the second through hole 18 so that the second through hole 18 will not leak water. At the same time, the sealant 20 can fixedly connect the pin shaft and the pin hole.

[0031] Refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , in an embodiment of the present invention, lubricating oil is applied to the outer surface of the threaded shaft 2 and the inner side surface of the threaded socket 3. A dust-proof sleeve 17 is sleeved outside the threaded shaft 2. A second dust-proof member 13 is arranged at the outer end of the threaded socket 3, and the second dust-proof member 13 is detachable; a waterproof layer 9 is arranged on the outer side surface of the pipe jacking pipe body 1, and a steel bar reinforcement layer 8 is arranged inside the pipe jacking pipe body 1; a lifting hole 5 for facilitating the handling of the pipe jacking pipe body 1 is arranged on the outer surface of the pipe jacking pipe body 1.

[0032] In an embodiment of the present invention, in order to make the threaded shaft 2 smoother when inserted into the threaded socket 3, lubricating oil is applied to the outer surface of the threaded shaft 2 and the inner side surface of the threaded socket 3, and a dust-proof sleeve 17 is sleeved outside the threaded shaft 2 to prevent dust from sticking to the outer surface of the threaded shaft 2. The second dust-proof member 13 is a patch or a plug head; through the setting of the steel bar reinforcement layer 8, the pipe jacking pipe body 1 can bear greater radial force and has better stability; the lifting hole 5 is arranged inside the pipe jacking pipe body 1, rather than installed on the inner side of the pipe jacking pipe body 1, to avoid adding resistance to the pipe jacking pipe body 1 during propulsion.

[0033] The working process of the embodiment of the present invention is as follows: When in use, align the threaded shaft 2 on one pipe jacking pipe body 1 with the threaded socket 3 on another pipe jacking pipe body 1. At this time, the waterproof annular plate 7 on one pipe jacking pipe body 1 also aligns with the waterproof annular groove 4 on another pipe jacking pipe body 1. Then, apply a thrust to the pipe jacking pipe body 1 to make the two pipe jacking pipe bodies 1 approach each other. At this time, all the threaded shafts 2 start to rotate until they are completely screwed into the threaded sockets 3, completing the docking work of the two pipe jacking pipe bodies 1. At the same time, the waterproof annular plate 7 will be inserted into the waterproof annular groove 4, and the waterproof annular plate 7 is in close contact with the inner side surface of the waterproof annular groove 4, so that water leakage will not occur at the connection of the two pipe jacking pipe bodies 1.

[0034] For those skilled in the art, although several embodiments and examples of the present invention have been described, these embodiments and examples are presented as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and changes can be made without departing from the gist of the invention. These embodiments and their modifications are included in the scope and gist of the invention and are included in the scope of the invention described in the claims and its equivalents.

[0035] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A deep well pipe jacking device, comprising a pipe jacking pipe body, characterized in that, At both ends of the pipe jacking pipe body, there are connecting components for fixedly connecting two pipe jacking pipe bodies, and waterproof components for preventing water seepage at the joints of the two pipe jacking pipe bodies are also provided. The connecting components include threaded jacks and threaded shafts. A plurality of the threaded jacks are arranged on one end face of the pipe jacking pipe body, and a plurality of mounting holes are arranged on the other end face of the pipe jacking pipe body. A threaded shaft is rotatably connected in the mounting hole, and the threaded shaft is matched with the threaded jack; the waterproof components include a waterproof annular plate and a waterproof annular groove. The waterproof annular plate is fixedly connected to one end face of the pipe jacking pipe body, and the waterproof annular groove is arranged on the other end face of the pipe jacking pipe body. The waterproof annular plate is matched with the waterproof annular groove, and the waterproof annular plate is sleeved outside a plurality of threaded shafts; A limiting component for limiting and fixing the threaded shaft inserted into the threaded jack is also provided on the pipe jacking device. The limiting component includes a limiting shaft and a limiting hole. The limiting hole is arranged on the side surface of the threaded shaft, and a second through hole is arranged on the side surface of the mounting hole. The limiting shaft is movably installed in the second through hole; when the threaded shaft is inserted into the threaded jack and is in place, the center lines of the limiting hole and the limiting shaft are collinear, and inserting the limiting shaft into the limiting hole can fix and limit the threaded shaft.

2. The deep well pipe jacking device according to claim 1, characterized in that, A plurality of first through holes are arranged at the inner end of the waterproof annular groove. After installation, sealant is added to the waterproof annular groove through the first through holes.

3. The deep well pipe jacking device according to claim 1, wherein The second through hole is a threaded through hole, and the limiting shaft is a screw. After the screw is inserted into the limiting hole, sealant is added to the threaded through hole so that water seepage does not occur in the threaded through hole.

4. The deep well pipe jacking device according to claim 1, characterized in that, Lubricating oil is applied to the outer surface of the threaded shaft and the inner side surface of the threaded jack. A dust-proof sleeve is sleeved outside the threaded shaft, and a second dust-proof part is arranged at the outer end of the threaded jack, and the second dust-proof part is detachable.

5. The deep well pipe jacking device according to claim 2, characterized in that, A first dust-proof part is arranged at the outer end of the waterproof annular groove, and the first dust-proof part is detachable. A third dust-proof part is arranged at the outer end of the first through hole, and the third dust-proof part is detachable.

6. The deep well pipe jacking device according to claim 1, characterized in that, A waterproof layer is arranged on the outer side surface of the pipe jacking pipe body, and a steel bar reinforcement layer is arranged inside the pipe jacking pipe body.

7. The deep well pipe jacking device according to claim 1, characterized in that, Lifting holes for facilitating the handling of the pipe jacking pipe body are arranged on the outer surface of the pipe jacking pipe body.

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