A tunneling device for pipe jacking construction

Abstract

This invention discloses a tunneling device for pipe jacking construction, relating to the field of pipe jacking construction technology. The device includes a main body, comprising a tunneling head, with a tunneling connecting pipe connected to its end. The tunneling connecting pipe is connected to a connecting pipe at its end. It also includes an anti-settlement mechanism, which is located at the end of the tunneling connecting pipe and outside the connecting pipe. Each positioning mechanism has an adjusting mechanism inside, and a supporting mechanism is located inside each adjusting mechanism. A connecting mechanism is provided between the positioning mechanism and the end of the tunneling connecting pipe. The anti-settlement mechanism includes an outer support sleeve, an inner compression sleeve inside the outer support sleeve, and a tail plate at the ends of the outer support sleeve and the inner compression sleeve. An injection port is provided in the tail plate. This tunneling device for pipe jacking construction can fill the gap between the connecting pipe and the soil during use, and can also prevent the pipeline from shifting its axis.

Description

Technical Field

[0001] This invention relates to the field of pipe jacking construction technology, and in particular to a tunneling device for pipe jacking construction. Background Technology

[0002] Pipe jacking, also known as trenchless construction, is a pipeline installation technique that involves little or no excavation. In pipe jacking, the jacking force generated by jacking equipment within a working pit overcomes the friction between the pipe and the surrounding soil, pushing the pipe into the ground at a designed slope, and then removing the excavated soil. After one section of pipe is jacked into the soil, the second section is lowered and the jacking continues. The principle is based on the thrust generated by the main jacking cylinder and the pipe sections and intermediate sections, which propels the tool pipe or tunneling machine from the working pit through the soil to the receiving pit where it is lifted. The pipeline follows closely behind the tool pipe or tunneling machine, and is buried between the two pits.

[0003] However, existing pipe jacking excavation equipment often uses thixotropic mud friction reduction technology, resulting in an outer diameter of the excavator larger than the pipe's outer diameter to form a grout sleeve. If grouting is not timely, settlement can occur. Therefore, during the excavation process, while ensuring the smooth operation of the excavation equipment, it is also necessary to prevent settlement. Often, lubricating mud is injected between the pipe and the soil. After excavation is completed, the lubricating mud is discharged and injected into concrete to fill the gap between the pipe and the soil. However, this excavation method requires multiple fillings during use, and if filling is not timely, it may lead to soil settlement. In addition, the lubricating mud used for the initial filling cannot be recycled, increasing the excavation cost. Summary of the Invention

[0004] The present invention addresses the problem that existing technical solutions are too simplistic and provides a solution that is significantly different from existing technologies. The present invention provides a tunneling device for pipe jacking construction to solve the technical problem that existing tunneling devices require multiple fillings during use, and the initial filling material cannot be reused, which increases tunneling costs.

[0005] The present invention adopts the following technical solution: a tunneling device for pipe jacking construction, comprising a body, the body including a tunneling head, the end of the tunneling head being connected to a tunneling connecting pipe, the end of the tunneling connecting pipe being connected to a connecting pipe, and further including an anti-settlement mechanism, the anti-settlement mechanism being disposed at the end of the tunneling connecting pipe and located outside the connecting pipe, the anti-settlement mechanism being provided with at least one positioning mechanism, each positioning mechanism having an adjustment mechanism on its inner side, the adjustment mechanism having a support mechanism on its inner side, the positioning mechanism being provided with a connecting mechanism between the positioning mechanism and the end of the tunneling connecting pipe, the anti-settlement mechanism including an outer support sleeve, the outer support sleeve having an inner extrusion sleeve on its inner side, the ends of the outer support sleeve and the inner extrusion sleeve being provided with a tail plate, the tail plate having an injection port.

[0006] Furthermore, the outer support sleeve and the inner extrusion sleeve are both made of rubber, and there is a gap between the outer support sleeve and the inner extrusion sleeve. The inner diameter of the outer and inner extrusion sleeves is larger than the outer diameter of the connecting pipe.

[0007] Furthermore, the positioning mechanism includes a positioning plate, which is disposed between the outer support sleeve and the inner support sleeve, and the positioning plate has at least one connecting hole.

[0008] Furthermore, the distance between two adjacent positioning plates is the same as the length of the connecting pipe, and the positioning plates are arranged in a ring.

[0009] Furthermore, the support mechanism includes a connecting toothed ring, which is disposed on the inner side of the positioning plate and has an annular groove. Connecting teeth are provided on both the inner and outer sides of the connecting toothed ring. First connecting gears are provided on both the inner and outer sides of the connecting toothed ring. A second connecting gear is provided at the end of each first connecting gear. A support rack is provided on the outer side of each second connecting gear. A guide groove is provided in each support rack. A guide block is provided in each guide groove. An inner extrusion plate and an outer support plate are respectively provided on the inner and outer sides of the connecting toothed ring. The inner extrusion plate and the outer support plate are respectively connected to the corresponding support rack.

[0010] Furthermore, the connecting gear ring is rotatably connected to the positioning plate, the connecting gear ring meshes with the first connecting gear, the second connecting gear meshes with the supporting rack, and the second connecting gear and the connecting gear ring are offset from each other.

[0011] Furthermore, the adjustment mechanism includes an internal threaded sleeve, which is disposed on the inner side of the positioning plate, and a connecting mounting sleeve is provided between the internal threaded sleeve and the positioning plate. One end of the internal threaded sleeve is provided with an external threaded rod, which passes through the positioning plate and is placed on the other side of the positioning plate. An adjustment gear is provided on the outer side of the internal threaded sleeve, and an adjustment gear ring is provided on the outer side of the adjustment gear ring.

[0012] Furthermore, the adjusting gear ring is fixedly connected to the connecting gear ring, the adjusting gear ring meshes with the adjusting gear, and the external threaded rod and the internal threaded sleeve are used in conjunction.

[0013] Furthermore, the connecting mechanism includes a connecting ring disposed on the outer side of the initial positioning plate. The connecting ring has a connecting groove, and a connecting sleeve is disposed in the connecting groove. The connecting sleeve is connected to the tunneling connecting pipe, and the connecting ring and the connecting sleeve are rotatably connected.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] Firstly, the anti-settlement mechanism can fill the gap between the connecting pipe and the soil during use. This mechanism uses an outer support sleeve and an inner extrusion sleeve, both made of rubber, with a gap between them. As liquid continuously fills this gap, when one appears between the connecting pipe and the soil, the outer support sleeve or inner extrusion sleeve expands to fill it, preventing soil settlement. Furthermore, the tight fit between the inner extrusion sleeve and the outer wall of the connecting pipe effectively prevents liquid from seeping into the pipe from the connection point, increasing the pipe's stability. The liquid filling the outer support sleeve and inner extrusion sleeve can be recycled, reducing tunneling costs. After tunneling is completed, the anti-settlement mechanism can be recycled, increasing its practicality.

[0016] Secondly, the combined use of the support and adjustment mechanisms not only supports the soil and prevents settlement, but also, because the support mechanism is located at the connection point of the connecting pipe, it consistently provides pressure to the connection, effectively preventing axial displacement of the connecting pipe during excavation and ensuring the stability of the connection. Furthermore, the inner pressure plate within the support mechanism ensures a tight seal between the inner pressure sleeve and the pipe, preventing liquid from seeping into the pipe through gaps and increasing the pipe's stability. To ensure stability, during use, as the tunneling head continuously advances, it pulls the positioning plate to move. The movement of the positioning plate causes the external threaded rod to move, at which point the external threaded rod disengages from the internal threaded sleeve, causing the adjusting gear ring to rotate. The rotation of the adjusting gear ring causes the connecting gear ring to rotate, which in turn causes the first connecting gear to rotate. Ultimately, this causes the support rack to move outward simultaneously, thereby moving the inner compression plate and the outer support plate simultaneously. This achieves the function of clamping the connecting pipe, preventing axial displacement of the connecting pipe during movement. At the same time, the outer support plate can also support the soil and prevent settlement.

[0017] In summary, this tunneling device can automatically fill the gap between the pipeline and the tunnel during use to avoid soil settlement. Furthermore, it can position the pipeline during the gap-filling process to prevent axial displacement during tunneling, thus preventing misalignment. It also prevents soil from entering the gap between the pipelines, which could affect subsequent concrete filling. Moreover, the device is reusable, increasing its practicality. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the adjustment mechanism structure of the present invention;

[0022] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle;

[0023] Figure 5 This is a schematic diagram of the support mechanism structure of the present invention;

[0024] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point B;

[0025] Figure 7 This is a schematic diagram of the connection structure between the adjusting toothed ring and the connecting toothed ring of the present invention;

[0026] Figure 8 For the present invention Figure 7 Enlarged structural diagram at point C;

[0027] Figure 9 This is a schematic diagram of the connection mechanism structure of the present invention;

[0028] Figure 10 This is a schematic diagram of the connection structure between the external threaded rod and the internal threaded sleeve of the present invention.

[0029] Figure label:

[0030] 1. Main body; 11. Tunneling head; 12. Tunneling connecting pipe; 2. Anti-settlement mechanism; 21. Outer support sleeve; 22. Inner extrusion sleeve; 23. Tail plate; 24. Injection port; 3. Positioning mechanism; 31. Positioning plate; 32. Connecting hole; 4. Adjusting mechanism; 41. Connecting mounting sleeve; 42. Adjusting gear; 43. Internal threaded sleeve; 44. Adjusting gear ring; 45. External threaded rod; 5. Support mechanism; 51. Annular groove; 52. Outer support plate; 53. First connecting gear; 54. Second connecting gear; 55. Support rack; 56. Connecting gear ring; 57. Guide block; 58. Guide groove; 59. Inner extrusion plate; 6. Connecting mechanism; 61. Connecting sleeve; 62. Connecting groove; 63. Connecting ring. Detailed Implementation

[0031] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] The components of the embodiments of the invention described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0033] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] The following is combined with Figures 1 to 10 As shown, this embodiment of the invention provides a tunneling device for pipe jacking construction, including a body 1. The body 1 includes a tunneling head 11, the end of which is connected to a tunneling connecting pipe 12. The end of the tunneling connecting pipe 12 is connected to a connecting pipe. It also includes an anti-settlement mechanism 2, which is disposed at the end of the tunneling connecting pipe 12 and located outside the connecting pipe. The anti-settlement mechanism 2 is provided with at least one positioning mechanism 3. Each positioning mechanism 3 is provided with an adjustment mechanism 4 inside. The adjustment mechanism is provided with a support mechanism 5 inside. A connection mechanism 6 is provided between the positioning mechanism 3 and the end of the tunneling connecting pipe 12. The anti-settlement mechanism 2 includes an outer support sleeve 21, an inner compression sleeve 22 inside the outer support sleeve 21, and a tail plate 23 at the ends of the outer support sleeve 21 and the inner compression sleeve 22. An injection port 24 is provided in the tail plate 23.

[0037] During operation, this tunneling device can automatically fill the gap between the pipeline and the tunnel, thereby preventing soil settlement. In the process of filling the gap, it can also position the pipeline to prevent axial deviation during tunneling, which could lead to misalignment of the pipeline. It can also prevent soil from entering the gap between the pipelines, thus affecting the subsequent filling of concrete. Furthermore, the device can be recycled, increasing its practicality.

[0038] Specifically, the outer support sleeve 21 and the inner extrusion sleeve 22 are made of rubber, and there is a gap between the outer support sleeve 21 and the inner extrusion sleeve 22. The inner diameter of the outer and inner extrusion sleeves 22 is larger than the outer diameter of the connecting pipe.

[0039] During operation, the dimensions of the outer support sleeve 21 and the inner extrusion sleeve 22 can be adjusted, making it easier to fill different gaps.

[0040] Specifically, the positioning mechanism 3 includes a positioning plate 31, which is disposed between the outer support sleeve 21 and the inner support sleeve, and the positioning plate 31 has at least one connecting hole 32.

[0041] During operation, the position of the other mechanisms can be adjusted by the positioning plate 31, thereby ensuring that the support mechanism 5 is located at the gap of the connecting pipe, and the connection hole 32 facilitates the filling of liquid into the entire anti-settlement mechanism 2.

[0042] Specifically, the distance between two adjacent positioning plates 31 is the same as the length of the connecting pipe, and the positioning plates 31 are arranged in a ring.

[0043] Specifically, the support mechanism 5 includes a connecting toothed ring 56, which is disposed on the inner side of the positioning plate 31 and has an annular groove 51. Connecting teeth are provided on both the inner and outer sides of the connecting toothed ring 56. First connecting gears 53 are provided on both the inner and outer sides of the connecting toothed ring 56. A second connecting gear 54 is provided at the end of each first connecting gear 53. A support rack 55 is provided on the outer side of each second connecting gear 54. A guide groove 58 is provided in each support rack 55. A guide block 57 is provided in each guide groove 58. An inner pressing plate 59 and an outer support plate 52 are respectively provided on the inner and outer sides of the connecting toothed ring 56. The inner pressing plate 59 and the outer support plate 52 are respectively connected to the corresponding support rack 55.

[0044] Specifically, the connecting gear ring 56 is rotatably connected to the positioning plate 31, the connecting gear ring 56 is meshed with the first connecting gear 53, the second connecting gear 54 is meshed with the supporting rack 55, and the second connecting gear 54 and the connecting gear ring 56 are misaligned.

[0045] Specifically, the adjusting mechanism 4 includes an internal threaded sleeve 43, which is disposed on the inner side of the positioning plate 31, and a connecting mounting sleeve 41 is provided between the internal threaded sleeve 43 and the positioning plate 31. One end of the internal threaded sleeve 43 is provided with an external threaded rod 45, which passes through the positioning plate 31 and is placed on the other side of the positioning plate 31. An adjusting gear 42 is provided on the outer side of the internal threaded sleeve 43, and an adjusting gear ring 44 is provided on the outer side of the adjusting gear ring 44.

[0046] Specifically, the adjusting gear ring 44 is fixedly connected to the connecting gear ring 56, the adjusting gear ring 44 is connected to the adjusting gear 42 by meshing, and the external threaded rod 45 and the internal threaded sleeve 43 are used in conjunction.

[0047] During operation, the combined use of the support mechanism 5 and the adjustment mechanism 4 not only supports the soil and prevents settlement, but also, because the support mechanism 5 is located at the connection point of the connecting pipe, it continuously provides pressure to the connection point, effectively preventing axial displacement of the connecting pipe during excavation and ensuring the connection stability. Furthermore, because the support mechanism 5 is located at the connection point, the inner pressure plate 59 within it ensures a tight seal between the inner pressure sleeve 22 and the pipe, preventing liquid from seeping into the pipe through gaps and increasing the connection stability. During use, as… As the tunneling head 11 continues to advance, it pulls the positioning plate 31 to move. The movement of the positioning plate 31 causes the external threaded rod 45 to move. At this time, the external threaded rod 45 disengages from the internal threaded sleeve 43, causing the adjusting gear ring 44 to rotate. The rotation of the adjusting gear ring 44 causes the connecting gear ring 56 to rotate, which in turn causes the first connecting gear 53 to rotate. Ultimately, this causes the supporting rack 55 to move outward simultaneously, thereby causing the inner squeezing plate 59 and the outer support plate 52 to move simultaneously. This achieves the function of clamping the connecting pipe and preventing the connecting pipe from shifting its axis during movement. At the same time, the outer support plate 52 can also support the soil and prevent settlement.

[0048] Specifically, the connecting mechanism 6 includes a connecting ring 63, which is disposed on the outer side of the initial positioning plate 31. A connecting groove 62 is provided in the connecting ring 63, and a connecting sleeve 61 is provided in the connecting groove 62. The connecting sleeve 61 is connected to the tunneling connecting pipe 12, and the connecting ring 63 and the connecting sleeve 61 are rotatably connected.

[0049] During operation, the movement of the tunneling head 11 can drive the device to move synchronously, which facilitates the filling of the entire pipeline. At the same time, since the tunneling head 11 and the positioning plate 31 are connected by the connecting ring 63, the rotation of the tunneling head 11 will not drive the positioning plate 31 to rotate, thus ensuring the stable operation of the device.

[0050] Working principle: First, connect the tunneling connecting pipe 12 to the tunneling head 11. Place the tunneling head 11 in the soil. Then, connect the tunneling connecting pipe 12 to the connecting ring 63 via the connecting sleeve 61. Connect the connecting ring 63 to the first positioning plate 31. Adjust the gap between the positioning plates 31 according to the length of the connecting pipe so that the length of the connecting pipe is the same as the gap between the positioning plates 31. Then start the tunneling device. At this time, the tunneling head 11 will continuously rotate and go deeper. During the process of the tunneling head 11 entering, it will drive the first positioning plate 31 to move through the connecting sleeve 61. Since the positioning plates 31 are connected by the outer support sleeve 21 and the inner compression sleeve 22, the movement of the positioning plate 31 will drive the outer support sleeve 21 and the inner compression sleeve 22 to move synchronously. The inner compression sleeve 22 and the outer support sleeve 21 are connected to the inner compression sleeve 22. The support sleeve 21 is initially folded. As the positioning plate 31 moves, the outer support sleeve 21 and the inner compression sleeve 22 are stretched and unfolded. During the movement of the tunneling head 11, liquid is continuously injected into the gap between the outer support sleeve 21 and the inner compression sleeve 22 through the injection port 24 to ensure that the anti-settlement mechanism 2 can fill the gap between the connecting pipe and the soil. When the outer support sleeve 21 and the inner compression sleeve 22 are unfolded to a certain extent, the second positioning plate 31 will move. When the second positioning plate 31 moves, the external threaded rod 45 set on the positioning plate 31 and the internal threaded sleeve 43 set on the other positioning plate 31 will continuously disengage. During the disengagement process, due to the threaded connection between the external threaded rod and the internal threaded sleeve 43, the internal threaded sleeve... The internal threaded sleeve 43 rotates, causing the adjusting gear 42 located outside the internal threaded sleeve 43 to rotate synchronously. Since the adjusting gear 42 meshes with the adjusting gear ring 44, its rotation drives the adjusting gear ring 44 to rotate. Simultaneously, because the adjusting gear ring 44 is connected to the connecting gear ring 56, the connecting gear ring 56 will rotate synchronously with the adjusting gear ring 44. Furthermore, since the connecting gear ring 56 has first connecting gears 53 meshing on both its inner and outer sides, the first connecting gear 53 will also rotate. Simultaneously, the first connecting gear 53 connects to the second connecting gear 54, which meshes with the supporting rack 55, causing the second connecting gear 54 to rotate with the first connecting gear 53. Meanwhile, the supporting rack... The support rack 55 moves along with the second connecting gear 54. The movement of the support rack 55 drives the outer plate and inner squeezing plate 59 to move as well. At this time, the inner squeezing plate 59 abuts against the gap between the two connecting plates, ensuring that the inner squeezing sleeve 22 located in the gap fits tightly against the outer wall of the connecting pipe. This effectively prevents soil from seeping into the pipe through the gap. Furthermore, the inner squeezing plate 59 also positions the two connecting pipes, preventing axial misalignment during excavation. The movement of the outer support plate 52 provides support to the soil, preventing settlement. When excavation is completed and concrete needs to be injected, the end positioning plate 31 moves towards the first positioning plate 31 as concrete is continuously poured.At this point, the external threaded rod 45 engages with the internal threaded sleeve 43, causing the adjusting gear 42 to reverse, thereby ultimately resetting the inner pressing plate 59 and the outer support plate 52, facilitating the removal of the mechanism. This device increases the stability of the tunneling device during the tunneling process.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tunneling device for pipe jacking construction, comprising a body (1), the body (1) comprising a tunneling head (11), the end of the tunneling head (11) being connected to a tunneling connecting pipe (12), the end of the tunneling connecting pipe (12) being connected to a connecting pipe, characterized in that; It also includes an anti-settlement mechanism (2), which is located at the end of the tunneling connecting pipe (12) and outside the connecting pipe. The anti-settlement mechanism (2) is provided with at least one positioning mechanism (3), and each positioning mechanism (3) is provided with an adjustment mechanism (4) inside. The adjustment mechanism (4) is provided with a support mechanism (5) inside. The positioning mechanism (3) and the end of the tunneling connecting pipe (12) are provided with a connecting mechanism (6). The anti-settlement mechanism (2) includes an outer support sleeve (21), and an inner extrusion sleeve (22) is provided inside the outer support sleeve (21). The ends of the outer support sleeve (21) and the inner extrusion sleeve (22) are provided with a tail plate (23), and an injection port (24) is opened in the tail plate (23). The outer support sleeve (21) and the inner extrusion sleeve (22) are both made of rubber, and there is a gap between the outer support sleeve (21) and the inner extrusion sleeve (22). The inner diameter of the inner extrusion sleeve (22) is larger than the outer diameter of the connecting pipe. The positioning mechanism (3) includes a positioning plate (31), which is disposed between the outer support sleeve (21) and the inner extrusion sleeve (22), and at least one connecting hole (32) is provided in the positioning plate (31). The distance between two adjacent positioning plates (31) is the same as the length of the connecting pipe, and the positioning plates (31) are arranged in a ring. The support mechanism (5) includes a connecting toothed ring (56), which is disposed on the inner side of the positioning plate (31) and has an annular groove (51) in it. Connecting teeth are provided on both the inner and outer sides of the connecting toothed ring (56). First connecting gears (53) are provided on both the inner and outer sides of the connecting toothed ring (56). A second connecting gear (54) is provided at the end of each first connecting gear (53). A support rack (55) is provided on the outer side of each second connecting gear (54). A guide groove (58) is provided in each support rack (55). A guide block (57) is provided in each guide groove (58). An inner extrusion plate (59) and an outer support plate (52) are provided on the inner and outer sides of the connecting toothed ring (56). The inner extrusion plate (59) and the outer support plate (52) are respectively connected to the corresponding support rack (55).

2. The tunneling device for pipe jacking construction according to claim 1, characterized in that; The connecting gear ring (56) is rotatably connected to the positioning plate (31), the connecting gear ring (56) is meshed with the first connecting gear (53), the second connecting gear (54) is meshed with the support rack (55), and the second connecting gear (54) and the connecting gear ring (56) are misaligned.

3. The tunneling device for pipe jacking construction according to claim 2, characterized in that; The adjustment mechanism (4) includes an internal threaded sleeve (43), which is disposed on the inner side of the positioning plate (31), and a connecting mounting sleeve (41) is provided between the internal threaded sleeve (43) and the positioning plate (31). One end of the internal threaded sleeve (43) is provided with an external threaded rod (45), which passes through the positioning plate (31) and is placed on the other side of the positioning plate (31). An adjustment gear (42) is provided on the outer side of the internal threaded sleeve (43), and an adjustment gear ring (44) is provided on the outer side of the positioning plate (31).

4. A tunneling device for pipe jacking construction according to claim 3, characterized in that; The adjusting gear ring (44) is fixedly connected to the connecting gear ring (56), the adjusting gear ring (44) is meshed with the adjusting gear (42), and the external thread rod (45) and the internal thread sleeve (43) are used in conjunction.

5. A tunneling device for pipe jacking construction according to claim 1, characterized in that; The connecting mechanism (6) includes a connecting ring (63), which is located on the outside of the initial positioning plate (31). A connecting groove (62) is provided in the connecting ring (63), and a connecting sleeve (61) is provided in the connecting groove (62). The connecting sleeve (61) is connected to the tunneling connecting pipe (12), and the connecting ring (63) and the connecting sleeve (61) are rotatably connected.

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