Auxiliary deviation rectifying device for curved pipe jacking

Abstract

The utility model discloses an auxiliary deviation rectifying device for a curved pipe jacking. The auxiliary deviation rectifying device comprises a plurality of pipe jacking sections, a power mechanism, a buffer structure and a limiting structure, the plurality of jacking pipe joints are sequentially connected and arranged; and the power mechanism is arranged on a port on one side of each jacking pipe joint. The buffer structures are arranged at the two ends of each jacking pipe joint respectively, and each buffer structure comprises a buffer steel plate which is fixed to the inner wall of a jacking pipe joint body. The limiting structure comprises a plurality of vertical plates, a plurality of limiting rods and a plurality of fixing pieces, and the vertical plates are perpendicularly fixed to the surfaces of the annular inner walls of the buffer steel plates at the end openings of the two adjacent jacking pipe sections correspondingly. Each limiting rod penetrates through the vertical plate through holes located in the ports of the two adjacent pipe jacking sections to connect the two adjacent pipe jacking sections together. And the limiting rods are fixed at the two ends of each limiting rod.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe jacking, and particularly relates to a curve pipe jacking auxiliary deviation rectifying device. Background Art

[0002] In the construction of urban underground pipe networks, traditional excavation construction methods not only damage ground traffic, causing traffic congestion, but may also damage the surrounding environment and underground facilities. To reduce these negative impacts, trenchless technologies such as curve pipe jacking construction technology have been widely applied. Curve pipe jacking technology allows pipes to be laid through underground curved paths without damaging the ground, thus minimizing interference with the existing environment.

[0003] Existing curve pipe jacking technologies still face some challenges during construction. Due to the complexity of the curved path, low intelligence and poor reliability of construction equipment, etc. During construction, traditional pipe jacking equipment may encounter problems such as changes in formation soil quality, uneven jacking force of jacks, uneven grouting pressure, uneven pipe stress, difficult guidance, and difficult control of construction accuracy during curve jacking. As a result, pipe jacking construction cannot completely jack in along the designed axis, and the trajectory is like a snake, causing attitude deviation. If the deviation rectification is not timely or cannot be rectified back, it will cause the inability to smoothly receive or the formed tunnel not meeting the design requirements, which may cause significant adverse effects and serious economic losses in the future. Therefore, there is an urgent need for an auxiliary deviation rectifying device for curve pipe jacking construction in soft soil geology, which can make the construction of the curve section jack in according to the design plan, assist the deviation rectifying oil cylinder to pull the head with too large jacking deviation back to the planned position, and control the axis and prevent the formation of damage due to the tension of the pipe joint during jacking. Content of the Utility Model

[0004] The purpose of the utility model is to provide a curve pipe jacking auxiliary deviation rectifying device, which can achieve accurate curve jacking, relieve the stress concentration at the end face of the pipe jacking pipe section at the same time, and prevent damage to the structure of the pipe jacking pipe section.

[0005] To achieve the above purpose, the utility model provides a curve pipe jacking auxiliary deviation rectifying device, including:

[0006] A number of pipe jacking pipe sections, which are connected and arranged in sequence;

[0007] A power mechanism, which is arranged on the port on one side of each pipe jacking pipe section;

[0008] A buffer structure, which is respectively arranged at both ends of each pipe jacking pipe section. Each buffer structure includes: a buffer steel plate, which is of an annular structure and is fixed on the inner wall of the pipe jacking pipe section body;

[0009] A limiting structure, including:

[0010] A number of vertical plates are respectively vertically fixed on the annular inner wall surface of the buffer steel plates at the ports of two adjacent jacking pipe segments, and are evenly distributed on each buffer steel plate, and the number of vertical plates on each buffer steel plate is the same; a through hole is provided on the surface of each vertical plate, and the through holes of the vertical plates provided on adjacent jacking pipe segments are arranged in one-to-one correspondence and opposite to each other;

[0011] A number of limiting rods, each limiting rod respectively passes through the through holes of the vertical plates at the ports of two adjacent jacking pipe segments, and connects two adjacent jacking pipe segments together;

[0012] A number of fixing pieces are fixed at both ends of each limiting rod.

[0013] Optionally, each jacking pipe segment includes a socket end and a spigot end. The inner diameter of the socket end is the same as the inner diameter of the jacking pipe segment body, the outer diameter of the socket end is the same as the outer diameter of the jacking pipe segment body, and the outer diameter of the spigot end matches the inner diameter of the socket end.

[0014] Optionally, the buffer structure further includes:

[0015] A backing plate, which is an annular structure. The backing plate is fixed on the inner wall of the socket end of the jacking pipe segment and is connected to the outer side wall of the buffer steel plate on this side; the outer diameter of the backing plate matches the inner diameter of the jacking pipe segment, and the inner diameter of the backing plate is smaller than the inner diameter of the spigot end of the jacking pipe segment.

[0016] Optionally, the power mechanism includes a number of hydraulic cylinders, and a number of prefabricated holes are evenly formed at the edge of the spigot end of the jacking pipe segment, and each hydraulic cylinder is fixed in the prefabricated hole; each hydraulic cylinder is provided with a telescopic structure, and the telescopic structure contacts the backing plate of the jacking pipe segment adjacent to the jacking pipe segment where the hydraulic cylinder is fixed.

[0017] Optionally, at least 4 prefabricated holes are evenly formed at the edge of the spigot end of each jacking pipe segment, so that the hydraulic cylinders are arranged in an X shape at the spigot end.

[0018] Optionally, it further includes a controller, and the controller is respectively connected to each hydraulic cylinder in a signal connection, and the telescopic change amount of each hydraulic cylinder can be individually controlled through the controller.

[0019] Optionally, each limiting rod is provided with a thread, each fixing piece is provided with a through hole, and the inner wall of the through hole of the fixing piece is provided with a thread structure matching the thread on the limiting rod, and the position of the fixing piece at both ends of the limiting rod can be adjusted along the thread on the limiting rod.

[0020] Optionally, the limiting structure further includes: a number of ear plates, each ear plate is vertically fixed on the embedded steel plate and is connected to the vertical plate; one ear plate is provided on each side of each vertical plate, so that the vertical plate is always perpendicular to the buffer steel plate.

[0021] Optionally, the position-limiting structure further includes:

[0022] Two embedded steel plates, both of which are annular structures, are respectively arranged on the inner walls of the main bodies of the jacking pipe sections at the two side ports of two adjacent jacking pipe sections, and are both fixed beside the buffer steel plates at both ends and close to the middle part of the jacking pipe section;

[0023] A plurality of the vertical plates and a plurality of the ear plates are all vertically fixed on the annular inner wall of the embedded steel plate, and the plurality of the vertical plates are evenly arranged on the embedded steel plate.

[0024] Optionally, the auxiliary deviation correction device is connected behind the jacking machine, and at least 3 jacking pipe sections are connected behind the jacking machine.

[0025] Compared with the prior art, the technical solution of the present utility model has at least the following beneficial effects:

[0026] (1) In the auxiliary deviation correction device of the present utility model, a plurality of hydraulic cylinders with different arrangement orientations are arranged between multiple jacking pipe sections to control the tension angle between adjacent jacking pipe sections, so as to achieve precise curve jacking. At the same time, multiple jacking pipe sections participate in deviation correction, which can effectively reduce the tension angle between pipe sections and the extrusion force between pipe sections.

[0027] (2) In the auxiliary deviation correction device of the present utility model, a position-limiting structure is arranged to connect between adjacent jacking pipe sections to prevent the unilateral gap between jacking pipe sections from being too large, which may damage the end face of the jacking pipe section. At the same time, the connection between jacking pipe sections is strengthened, and during the construction process in soft geological conditions, it can prevent the overall pipe section axis from being damaged due to the deviation of some jacking pipe sections.

[0028] (3) In the auxiliary deviation correction device of the present utility model, a buffer structure is arranged at the port of the jacking pipe section. During the curve jacking process, it can better buffer the contact force between pipe sections, better compensate the force-bearing surface of the pipe interface in the curve section, reduce the stress concentration phenomenon generated at the pipe end face, and is more beneficial to the construction, operation and maintenance of the jacking pipe. Description of the Drawings

[0029] Figure 1 It is a schematic connection diagram of adjacent jacking pipe sections of the curve jacking auxiliary deviation correction device of the present utility model.

[0030] Figure 2 It is a left view of a single jacking pipe section of the curve jacking auxiliary deviation correction device of the present utility model.

[0031] Figure 3 It is a schematic diagram of a jacking pipe section of the curve jacking auxiliary deviation correction device of the present utility model.

[0032] Figure 4 It is a schematic connection diagram of the position-limiting structure connection of the curve jacking auxiliary deviation correction device of the present utility model.

[0033] Figure 5 This is a partial enlarged view of the limit structure of the curve pipe jacking auxiliary deviation correction device of the present utility model.

[0034] Figure 6 This is an installation schematic diagram of the curve pipe jacking auxiliary deviation correction device of the present utility model.

[0035] In the figure, 1 - pipe jacking pipe joint, 12 - socket end, 13 - spigot end, 14 - prefabricated hole, 2 - hydraulic cylinder, 31 - backing plate, 32 - buffer steel plate, 41 - vertical plate, 42 - limit rod, 43 - ear plate, 44 - fixing piece, 45 - embedded steel plate, 5 - pipe jacking machine. Specific embodiments

[0036] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0037] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0038] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0039] Such as Figure 1As shown in the figure, the curve pipe jacking auxiliary deviation correction device of the present utility model includes: a plurality of pipe jacking pipe sections 1, a buffer structure, a power mechanism, and a limiting structure. The plurality of pipe jacking pipe sections 1 are connected and arranged in sequence. The buffer structure is arranged on the inner wall of each pipe jacking pipe section 1. The power mechanism is arranged at one side port of each pipe jacking pipe section 1, and both ends of the limiting structure are respectively fixed on the inner walls of two adjacent pipe jacking pipe sections 1.

[0040] As Figure 3 shown, each pipe jacking pipe section 1 includes a socket end 12 and a spigot end 13. The inner diameter of the socket end 12 is the same as the inner diameter of the main body of the pipe jacking pipe section 1. The outer diameter of the socket end 12 is the same as the outer diameter of the main body of the pipe jacking pipe section 1, and the outer diameter of the spigot end 13 matches the inner diameter of the socket end 12. As Figure 1 shown, when the auxiliary deviation correction device is in the initial state, the spigot end 13 of the pipe jacking pipe section 1 located at the rear can be inserted into the socket end 12 of the pipe jacking pipe section 1 located in the front, so that the plurality of pipe jacking pipe sections 1 are connected and arranged in sequence.

[0041] Furthermore, a plurality of prefabricated holes 14 are evenly arranged at the edge of the spigot end 13 of each pipe jacking pipe section 1, as Figure 3 shown, for placing the power mechanism.

[0042] As Figure 2 and Figure 3 shown, each power mechanism includes: a plurality of hydraulic cylinders 2, and the plurality of hydraulic cylinders 2 are respectively fixed in the prefabricated holes 14 of the pipe jacking pipe section 1.

[0043] At least 4 prefabricated holes 14 are evenly opened at the edge of the spigot end 13 of each pipe jacking pipe section 1, so that the hydraulic cylinders 2 are arranged in an X shape at the spigot end 13; and the more the number of prefabricated holes 14 arranged at the edge of the spigot end 13 and the number of hydraulic cylinders 2 fixed in the holes, the more precisely the jacking direction of the pipe jacking machine 5 arranged at the front end of the auxiliary deviation correction device can be controlled.

[0044] In a preferred embodiment, when the curve forming or deviation correction is difficult and it is difficult to control the jacking direction, the prefabricated holes 14 can be increased to 8 (as Figure 2 shown), so that 8 hydraulic cylinders 2 are respectively placed at the upper, lower, left, right, upper left, lower left, upper right, and lower right positions of the spigot end 13 to improve the control accuracy of the jacking direction.

[0045] The buffer structure includes: a backing plate 31 and a buffer steel plate 32. The buffer steel plate 32 is in an annular structure, fixed on the inner wall of the jacking pipe segment 1, and circumferentially distributed along the inner wall of the jacking pipe segment 1; each jacking pipe segment 1 is provided with two buffer steel plates 32, which are respectively fixed on the inner walls of the main body of the jacking pipe segment 1 near the socket end 13 and the spigot end 12 of the jacking pipe segment 1. The backing plate 31 is in a circular ring structure, the outer diameter of which matches the inner diameter of the jacking pipe segment 1, and the inner diameter of the backing plate 31 is smaller than the inner diameter of the socket end 13 of the jacking pipe segment 1; the backing plate 31 is fixed on the inner wall of the socket end 12 of the jacking pipe segment 1 and is in contact with the outer side wall of the buffer steel plate 32 on this side.

[0046] Specifically, each hydraulic cylinder 2 is provided with a telescopic structure, and one end of the telescopic structure is in contact with the backing plate 31 when the auxiliary deviation correction device is in the initial state. Further, the auxiliary deviation correction device further includes a controller, and the controller is respectively connected to each hydraulic cylinder 2 by signals, and can separately control the telescopic change amount of each hydraulic cylinder 2 through the controller, so as to control the jacking direction.

[0047] When the auxiliary deviation correction device is in the initial state, the port of the socket end 13 of the jacking pipe segment 1 located at the rear can contact the backing plate 31, and one end of the telescopic structure of the hydraulic cylinder 2 in the prefabricated hole 14 provided on the socket end 13 is in contact with the backing plate 31; when changing the jacking direction of the jacking machine 5, by separately controlling the telescopic structures of each hydraulic cylinder 2 to extend, the tensor angle change between adjacent jacking pipe segments 1 will be controlled; at this time, the telescopic structure of the hydraulic cylinder 2 contacts the backing plate 31 and extends to both sides with the backing plate 31 as the support point, so that the tensors of the socket end 13 and the socket end 12 of adjacent two jacking pipe segments 1 increase on the side where the hydraulic cylinder is provided; at the same time, the backing plate 31 further disperses the acting force at the contact point of the hydraulic cylinder 2 on it, and through the buffer steel plate 32 connected to the backing plate 31, the concentrated force received at the contact point between the backing plate 31 and the hydraulic cylinder 2 is dispersed into a uniform force acting between the backing plate 31 and the buffer steel plate 32, relieving the excessive local stress on the inner wall of the jacking pipe segment 1 and preventing the jacking pipe segment 1 from being damaged.

[0048] In a preferred embodiment, the backing plate 31 is made of knot-free pine wood with a thickness exceeding 20 mm, and is fixed on the inner wall of the socket end 12 by gluing or a pneumatic gun; and a water-stop rubber ring is installed at the port of the socket end 13 of the jacking pipe segment 1. When the auxiliary deviation correction device is in the initial state, the water-stop rubber ring on the socket end 13 of the jacking pipe segment 1 contacts the backing plate 31 at the socket end 12 of its adjacent jacking pipe segment 1, and can deform when the adjacent jacking pipe segments 1 are squeezed, relieving the concentrated force at the port of the jacking pipe segment 1.

[0049] Such as Figure 4 and Figure 5As shown in the figure, the limiting structure includes: two embedded steel plates 45, several vertical plates 41, several limiting rods 42 and several fixing members 44. The two embedded steel plates 45 are both annular structures, which are respectively arranged on the inner walls of the main bodies of the adjacent two jacking pipe joints 1 on the side of the socket end 13 and the spigot end 12 of the jacking pipe joint 1, and are both fixed beside the buffer steel plates 32 at both ends and close to the middle part of the jacking pipe joint 1 (such as Figure 3 shown in the figure), and are arranged circumferentially along the inner wall of the pipeline; the outer walls of the embedded steel plates 45 are integrally formed with the steel bar mesh inside the jacking pipe joint 1 through welded steel bars. Several of the vertical plates 41 are respectively vertically fixed on the annular inner wall surfaces of the two ends of the embedded steel plates 45, and are evenly distributed circumferentially on each embedded steel plate 45, and the number of vertical plates 41 on each embedded steel plate 45 is the same; a through hole is provided on the surface of each vertical plate 41, and the through holes of the vertical plates 41 provided on the socket end 13 are arranged in one-to-one correspondence with the through holes of the vertical plates 41 provided on the spigot end 12. Each of the limiting rods 42 passes through the through holes of the vertical plates 41 at the socket end 13 of the rear jacking pipe joint and the corresponding through holes of the vertical plates 41 at the spigot end 12 of the front jacking pipe joint, connecting two adjacent jacking pipe joints 1 together; according to the actual change in the jacking direction amplitude, the position of the limiting rod 42 passing through the vertical plate 41 at the port of the jacking pipe joint and the number of the limiting rods 42 can be changed to prevent the excessive tensor between adjacent jacking pipe joints; therefore, the number of the limiting rods 42 is less than or equal to the number of the vertical plates 41 provided on a single embedded steel plate 45. The fixing members 44 are fixed at both ends of each limiting rod 42, and can limit the maximum distance between adjacent vertical plates 41 on the two connected jacking pipe joints 1, and further limit the maximum distance between adjacent jacking pipe joints 1; the number of the fixing members 44 is twice the number of the limiting rods 42.

[0050] Specifically, threads are provided on each of the limiting rods 42, a through hole is provided on each of the fixing members 44, and a thread structure matching that on the limiting rod 42 is provided on the inner wall of the through hole of the fixing member 44, and the position of the fixing members 44 at both ends of the limiting rod can be adjusted along the threads on the limiting rod 42 to set the limiting length of the limiting rod 42, and further change the maximum distance between adjacent jacking pipe joints 1 to prevent structural damage caused by excessive tensor between adjacent jacking pipe joints 1.

[0051] Specifically, the two vertical plates 41, one limiting rod 42 and a pair of fixing members 44 which are arranged at the ports of adjacent jacking pipe joints 1 and are opposite in position together form a limiting sub-unit, and the limiting structure is jointly composed of several limiting sub-units fixed on the embedded steel plates 45 at the ports of adjacent jacking pipe joints.

[0052] Specifically, each of the limiting structures further includes several ear plates 43, each of the ear plates 43 is vertically fixed on the embedded steel plate 45 and is connected to the vertical plate 41; one ear plate 43 is provided on each side of each vertical plate 41 to ensure that the vertical plate 41 is always perpendicular to the embedded steel plate 45.

[0053] In a preferred embodiment, a buffer steel plate 32 can be used instead of the embedded steel plate 45, that is, a plurality of vertical plates 41 and the ear plates 43 connected thereto are vertically fixed on the annular inner wall surface of the buffer steel plate 32 and are arranged uniformly on the buffer steel plate 32.

[0054] As Figure 6 shown, the auxiliary deviation correction device is connected to the rear of the pipe jacking machine 5, and at least 3 pipe jacking pipe sections 1 are connected behind the pipe jacking machine 5. The number of the pipe jacking pipe sections 1 can be increased according to actual deflection requirements. The farther the distance between the pipe jacking pipe section 1 and the pipe jacking machine 5 is, the greater the tensor change generated by the hydraulic cylinder 2 provided on the pipe jacking pipe section 1 to regulate the pipe jacking machine head. Therefore, when there is a large deviation in the jacking direction of the pipe jacking machine head, the regulation can be carried out sequentially from the pipe jacking pipe section 1 close to the pipe jacking machine 5, so as to control the jacking direction of the pipe jacking machine head.

[0055] When entering the curve construction stage or the deviation correction stage, when the jacking direction of the pipe jacking machine 5 needs to deflect to one side, the telescopic amount of the hydraulic cylinder 2 provided on each pipe jacking pipe section 1 can be controlled to change the tensor change between adjacent pipe jacking pipe sections 1. Specifically, as Figure 6 shown, when the pipe jacking machine 5 needs to deflect downward and continue to jack, at this time, the tensor change of the two ports below (deflection direction) of the adjacent pipe jacking pipe section 1 is smaller than the tensor change of the two ports of other parts (non-deflection direction) of the adjacent pipe jacking pipe section 1. At this time, when the tensor between adjacent pipe jacking pipe sections 1 is large, that is, when the gap on one side of the adjacent pipe jacking pipe section 1 is large, the limiting structure will play a limiting role to control the tensor change between adjacent pipe jacking pipe sections 1 within the limiting length range of the set limiting rod 42, preventing the tensor from being too large and causing structural damage to the pipe jacking.

[0056] In summary, the auxiliary deviation correction device described in the present invention sets a plurality of hydraulic cylinders and limiting structures with different arrangement orientations between multiple pipe jacking pipe sections to achieve precise control of the jacking direction and prevent the tensor of the pipe jacking pipe section from being too large and damaging the structure of the pipe jacking pipe section; a buffer structure is arranged at the port of the pipe jacking pipe section to effectively buffer the stress concentration phenomenon at the port of the pipe jacking pipe section, which is more beneficial to the construction, operation and maintenance of the pipe jacking.

[0057] Although the content of the present invention has been introduced in detail through the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation of the present invention. After those skilled in the art have read the above content, various modifications and substitutions to the present invention will be obvious. Therefore, the protection scope of the present invention should be defined by the appended claims.

Claims

1. A curve pipe jacking auxiliary deviation correction device, characterized in that Including: A number of jacking pipe segments, and a number of the jacking pipe segments are connected and arranged in sequence; A power mechanism, which is arranged on the port on one side of each jacking pipe segment; A buffer structure, which is respectively arranged at both ends of each jacking pipe segment. Each buffer structure includes: a buffer steel plate, which is an annular structure and is fixed on the inner wall of the main body of the jacking pipe segment; A limiting structure, including: A number of vertical plates, which are respectively vertically fixed on the annular inner wall surface of the buffer steel plates at the ports of two adjacent jacking pipe segments, and are evenly distributed on each buffer steel plate, and the number of vertical plates on each buffer steel plate is the same; a through hole is provided on the surface of each vertical plate, and the through holes of the vertical plates on the adjacent jacking pipe segments are arranged in one-to-one correspondence; A number of limiting rods, each of which respectively passes through the through holes of the vertical plates at the ports of two adjacent jacking pipe segments to connect two adjacent jacking pipe segments together; A number of fixing parts, which are fixed at both ends of each limiting rod.

2. The curve pipe jacking auxiliary deviation correction device according to claim 1, characterized in that, Each of the jacking pipe segments includes a socket end and a spigot end. The inner diameter of the socket end is the same as the inner diameter of the main body of the jacking pipe segment, the outer diameter of the socket end is the same as the outer diameter of the main body of the jacking pipe segment, and the outer diameter of the spigot end matches the inner diameter of the socket end.

3. The curve pipe jacking auxiliary deviation correction device according to claim 2, wherein, The buffer structure further includes: A backing plate, which is an annular structure. The backing plate is fixed on the inner wall of the socket end of the jacking pipe segment and is connected to the outer side wall of the buffer steel plate on this side; the outer diameter of the backing plate matches the inner diameter of the jacking pipe segment, and the inner diameter of the backing plate is smaller than the inner diameter of the spigot end of the jacking pipe segment.

4. The curve pipe jacking auxiliary deviation correction device according to claim 3, characterized in that, The power mechanism includes a number of hydraulic cylinders, and a number of prefabricated holes are evenly formed at the edge of the spigot end of the jacking pipe segment. Each hydraulic cylinder is fixed in the prefabricated hole; each hydraulic cylinder is provided with a telescopic structure, and the telescopic structure contacts the backing plate of the jacking pipe segment adjacent to the jacking pipe segment where the hydraulic cylinder is fixed.

5. The curve pipe jacking auxiliary deviation correction device according to claim 4, characterized in that, At least 4 prefabricated holes are evenly formed at the edge of the spigot end of each jacking pipe segment, so that the hydraulic cylinders are arranged in an X shape at the spigot end.

6. The curve pipe jacking auxiliary deviation correction device according to claim 4, characterized in that, It further includes a controller, and the controller is respectively connected to each hydraulic cylinder in signal, and the telescopic change amount of each hydraulic cylinder can be controlled separately through the controller.

7. The curve pipe jacking auxiliary deviation correction device according to claim 1, wherein, Threads are provided on each of the limiting rods, through holes are provided on each of the fixing parts, and threaded structures matching those on the limiting rods are provided on the inner walls of the through holes of the fixing parts, and the positions of the fixing parts at both ends of the limiting rod can be adjusted along the threads on the limiting rod.

8. The curve pipe jacking auxiliary deviation correction device according to claim 1, wherein, The limiting structure further includes: a number of ear plates, each of which is vertically fixed on the embedded steel plate and is connected to the vertical plate; one ear plate is provided on each side of each vertical plate, so that the vertical plate is always perpendicular to the buffer steel plate.

9. The curve pipe jacking auxiliary deviation correction device according to claim 8, characterized in that, The limiting structure further includes: 2 embedded steel plates, both of which are annular structures, and are respectively arranged on the inner walls of the main bodies of the jacking pipe segments at the two side ports of two adjacent jacking pipe segments, and are both fixed beside the buffer steel plates at both ends and close to the middle part of the jacking pipe segment; A number of the vertical plates and a number of the ear plates are all vertically fixed on the annular inner wall of the embedded steel plate, and a number of the vertical plates are evenly arranged on the embedded steel plate.

10. The curve pipe jacking auxiliary deviation correction device according to claim 1, wherein, The auxiliary deviation correction device is connected behind the pipe jacking machine, and at least 3 jacking pipe segments are connected behind the pipe jacking machine.

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