Deviation rectifying device for open caisson pipe jacking construction

Abstract

The invention relates to the technical field of underground pipeline construction equipment, in particular to an open caisson pipe jacking construction deviation rectifying device. The floating deviation rectifying device is assembled on the pipe jacking pusher and is synchronously matched with the pipe jacking pusher in the soil layer tunneling process during construction, and the floating deviation rectifying device comprises a floating deviation rectifying base which comprises a stroke base fixed to the pushing end of the pipe jacking pusher and a floating base used for being in pushing contact with the end of a jacking pipe. A plurality of floating connecting pieces distributed in the circumferential direction around the center axis of the stroke base are connected between the stroke base and the floating base, and the floating base is provided with a positioning mechanism used for conducting positioning butt joint between the two jacking pipes to be pushed and the two pushed jacking pipes. According to the method, pushing and deviation rectifying of the jacking pipe are achieved in the modes of butt joint positioning, force application guiding, self-adaptive floating adjustment and the like, the smoothness of pipeline laying is improved, the construction quality of pipeline butt joint laying is guaranteed, and the probability of structural damage of the jacking pipe is reduced to a certain degree.

Description

Technical Field

[0001] The invention relates to the technical field of underground pipeline construction equipment, and specifically proposes a deviation correction device for caisson jacking construction. Background Art

[0002] Caisson is a deep foundation construction method that prefabricates a shaft-like structure, then digs the soil inside it, and allows the caisson to gradually sink to a predetermined depth by its own weight and external forces. The caisson can be used as the foundation of an underground facility or directly as some underground structures.

[0003] Pipe jacking is a trenchless pipe laying technology suitable for underground pipeline installation in various geological conditions. This method uses a pipe jacking machine to push the pipe section from the starting point to the end point, adding a new pipe section every time it pushes a certain distance until an underground pipeline is laid between the starting point and the end point.

[0004] Caisson pipe jacking is an underground pipeline laying technology that combines the caisson construction method and the pipe jacking construction method. It is usually used to lay pipeline infrastructure such as sewers and cable ducts in places where it is difficult to carry out ground excavation operations, such as crossing rivers, roads or in urban areas.

[0005] Specifically, in some projects, caissons are usually pre-excavated and built at the starting point and the end point of the pipeline laying, which are used as the starting well or receiving well for the pipe jacking operation. The pipe jacking machine is used to dig underground from the starting well to the receiving well, and then the pipe jacking pusher is used at the starting well to push the pipe section by section into the underground passage excavated by the pipe jacking machine until the pipe is pushed and laid to the receiving well. Caisson pipe jacking is an effective solution for specific underground pipeline laying needs. It makes full use of the respective advantages of caissons and pipe jacking, reduces the impact on ground traffic and the environment, and realizes efficient and safe construction in complex environments.

[0006] Since the pipe jacking method is a trenchless pipeline laying technology and the pipeline laying distance is long, there will be more or less the problem of pipe jacking laying deviation during the pipe jacking advancement process. Most of the pipe jackings are prefabricated concrete pipes. In order to improve the sealing of the pipe jacking butt joint and reduce the influence of the pipe jacking deviation, some pipe jackings will be prefabricated with a butt joint at one end, while the other part of the pipe jacking will not be provided with any joint structure. Obviously, the butt joint effect of the pipe jacking with a preinstalled joint is better. In the present invention, it is assumed that the pipe jacking used in the construction is preinstalled with a joint. However, in the existing construction process, the pipe jacking laying deviation will still occur due to various reasons, which will affect the quality of the pipeline laying construction, at least as follows:

[0007] In the prior art, located in the starting shaft, the pipe jacking machine with a hydraulic propulsion structure is used to push the pipe jacking into the underground passage, and a guiding support seat for supporting the pipe jacking and guiding the pipe jacking propulsion is installed. For the pipe jacking without pre-installed joints, the accuracy of propulsion laying between two pipe jackings mainly depends on the end clamping force. For the pipe jacking with pre-installed joints, the joints can also be used to assist in preventing deviation between two pipe jackings. However, during the propulsion construction process, as the pipe jacking gradually advances, firstly, the outermost pipe jacking gradually separates from the guiding support seat, and the guiding effect of the guiding support seat gradually weakens until it disappears; secondly, during the pipe jacking propulsion process, the soil layer forms resistance to the pipe jacking, and the resultant force of the random distribution of the resistance causes the pipe jacking to generate deflection stress; thirdly, the pipe jacking advances synchronously with the pipe jacking machine, and the pipe jacking machine will adjust the tunneling direction in real time to ensure that the laying direction reduces deviation. The adjustment of the tunneling direction of the pipe jacking machine will indirectly generate deflection stress on the pipe jacking during the propulsion process.

[0008] In summary, the deviation of the direction during the pipe jacking propulsion process generates deflection stress, which affects the docking accuracy and sealing performance between pipe jackings. In addition, it may also cause structural damage to the precast pipe jacking, affecting the service life of the pipeline. Summary of the Invention

[0009] In order to solve the above problems, the present invention provides a deviation rectification device for the construction of a caisson pipe jacking, which is used to solve the problems mentioned in the above background technology.

[0010] In order to achieve the above purpose, the present invention adopts the following technical solutions to implement: a deviation rectification device for the construction of a caisson pipe jacking, which is assembled on the pipe jacking machine. The device includes: a floating deviation rectification seat, which includes a stroke seat fixed at the propulsion end of the pipe jacking machine and a floating base for advancing and contacting the end of the pipe jacking. A plurality of floating connecting pieces circumferentially distributed around the central axis of the stroke seat are connected between the stroke seat and the floating base. Under the joint restraint of the plurality of floating connecting pieces, the floating base can move radially along any direction of the stroke seat; and a positioning mechanism, which is assembled on the floating base and is used for positioning and docking between the two pipe jackings to be propelled and the already propelled pipe jackings. The positioning mechanism includes a plurality of positioning components circumferentially distributed around the central axis of the floating base. The plurality of positioning components can move synchronously in the radial direction of the floating base. The positioning component is provided with two clamping parts that independently contact the inner walls of the two pipe jackings. When the positioning component moves in the direction away from the center of the floating base, the clamping component contacting the inner wall of the already propelled pipe jacking contacts the pipe jacking earlier than the other clamping component.

[0011] Preferably, the floating base includes: an end clamping disc for advancing and contacting the end of the pipe jacking to be propelled; the positioning mechanism is assembled on the end clamping disc; and a hinge seat cylinder coaxially arranged and fixed at one end of the end clamping disc facing away from the positioning mechanism. The plurality of floating connecting pieces are connected between the stroke seat and the hinge seat cylinder.

[0012] Preferably, the floating connecting member includes: a floating block hinged to the hinge seat cylinder; a guide post hinged to the floating block and slidably fitted in the stroke seat in the radial direction; and two tension springs distributed on both sides of the guide post; both ends of the tension spring are respectively hinged to the floating block and the stroke seat.

[0013] Preferably, the positioning member includes a sliding base slidably arranged in the radial direction of the floating base, and the two clamping parts are respectively a fixed clamping block and a sliding clamping block. The fixed clamping block is fixed on the sliding base, the sliding clamping block is slidably fitted on the sliding base along the sliding direction of the sliding base, and the sliding clamping block is elastically connected with the sliding base. The sliding clamping block is arranged farther from the floating base relative to the fixed clamping block, and the clamping surface of the sliding clamping block is farther from the center of the floating base than the clamping surface of the fixed clamping block.

[0014] Preferably, the positioning mechanism further includes: an inner extending frame fixed to the end chuck; the positioning member is slidably installed on the inner extending frame through the sliding base; and a driving assembly assembled on the inner extending frame for driving a plurality of positioning members to move synchronously.

[0015] Preferably, the inner extending frame includes: a plurality of inner extending rods horizontally fixed to the end chuck; two slide rail discs horizontally arranged opposite to each other and coinciding with the central axis of the floating base; a plurality of connecting rods are connected between the two slide rail discs, and one of the slide rail discs is fixed between the ends of the plurality of inner extending rods; the sliding base is slidably installed between the two slide rail discs in the radial direction.

[0016] Preferably, the driving assembly includes: a power component fixed to one of the slide rail discs and having a telescopic driving output end; a hinge seat fixed to the telescopic driving end of the power component; a plurality of connecting rods respectively corresponding to and cooperating with a plurality of positioning members; and one end of the connecting rod is hinged to the hinge seat, and the other end is hinged to the sliding base of the corresponding positioning member.

[0017] Preferably, a guide plate slidably matched with the sliding base is fixed to one end of the sliding clamping block facing away from the clamping surface, and a plurality of inner clamping springs are connected between the sliding clamping block and the sliding base.

[0018] Preferably, a fixing seat is commonly connected between the plurality of inner extending rods, and the power component is also fixed to the fixing seat.

[0019] The above technical solution has the following advantages or beneficial effects: The present invention provides a deviation rectification device for open caisson pipe jacking construction, which can be butt - installed at the propulsion end of an existing pipe jacking machine and can cooperate with the tunneling process of the pipe jacking machine for synchronous construction during pipe jacking propulsion. It is provided with a floating deviation rectification seat and a positioning mechanism assembled at the floating end of the floating deviation rectification seat. Through the internal support clamping of the positioning mechanism and the lateral clamping of the floating deviation rectification seat, the butt - joint positioning of two pipe jacks can be achieved. Moreover, the structure design of the positioning mechanism adopts a two - section distributed clamping, ensuring the stability and accuracy of the butt - joint positioning, enhancing the integrity during the propulsion of the two pipe jacks to ensure synchronous propulsion. On the basis of the butt - joint positioning, the floating deviation rectification seat can indirectly transfer the propulsion force of the pipe jacking machine to the floating base, ensuring that the resultant thrust is at the central axis of the two pipe jacks, avoiding the deviation of the thrust, ensuring the concentration and centering of the propulsion force application. In addition, during the process of real - time adjustment of the tunneling direction when the pipe jacking machine is tunneling, an adaptive floating response adjustment can be generated to ensure that the pipe jack advances along the tunneling underground passage, reducing the propulsion resistance and minimizing the generation of resistance that causes the pipe jack to deviate. To sum up, the device provided by the present invention can achieve the propulsion deviation rectification of the pipe jack during the pipe jacking propulsion construction through methods such as butt - joint positioning, force application guidance, and adaptive floating adjustment, improving the smoothness of pipeline laying, ensuring the construction quality of pipeline butt - joint laying, and to a certain extent, reducing the probability of structural damage to the pipe jack. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] By reading the detailed description of the non - restrictive embodiments with reference to the following drawings, the present invention and its features, shape, and advantages will become more obvious. In all the drawings, the same reference numerals indicate the same parts, and the drawings are not deliberately drawn to scale, with the emphasis on showing the gist of the present invention.

[0021] Figure 1 FIG. is a three - dimensional structural schematic diagram of a deviation rectification device for open caisson pipe jacking construction provided by the present invention.

[0022] Figure 2 FIG. is a three - dimensional sectional view of the floating deviation rectification seat.

[0023] Figure 3 FIG. is a three - dimensional sectional view of the positioning mechanism.

[0024] Figure 4 FIG. is a structural schematic diagram of the floating connecting piece.

[0025] Figure 5 FIG. is a three - dimensional structural diagram of the assembly of the positioning part and the driving component.

[0026] Figure 6 FIG. is a diagram showing the assembly position relationship of the connecting rod and the positioning part relative to the slide rail disc.

[0027] Figure 7It is the construction status diagram of a deviation rectification device for open caisson pipe jacking construction provided by the present invention.

[0028] In the figure: 1. Floating deviation rectification seat; 11. Stroke seat; 12. Floating base; 121. End clamping disc; 122. Hinge seat cylinder; 13. Floating connecting piece; 131. Floating block; 132. Guide post; 133. Tension spring; 2. Positioning mechanism; 21. Inner extending frame; 211. Inner extending rod; 212. Fixed seat; 213. Slide rail disc; 214. Connecting rod; 22. Positioning component; 221. Sliding base; 222. Fixed clamping block; 223. Sliding clamping block; 224. Guide plate; 225. Inner clamping spring; 23. Driving component; 231. Hydraulic cylinder; 232. Hinge seat; 233. Connecting rod. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] In order to enable those in the technical field to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] As Figure 1 , Figure 2 and Figure 4 shown, a deviation rectification device for open caisson pipe jacking construction is assembled on the pipe jacking machine and cooperates synchronously with the pipe jacking machine during the soil layer tunneling process during construction. The device includes a floating deviation rectification seat 1. The floating deviation rectification seat 1 includes a stroke seat 11 fixed to the propulsion end of the pipe jacking machine and a floating base 12 for advancing and contacting the end of the pipe jacking. The floating base 12 includes an end clamping disc 121 in the shape of a disc and a hinge seat cylinder 122 in the shape of a cylinder. The hinge seat cylinder 122 is coaxially and welded on one side disc surface of the end clamping disc 121. The other side disc surface of the end clamping disc 121 replaces the end surface of the original propulsion part of the pipe jacking machine to be used for advancing and contacting the end of the pipe jacking to be propelled; A plurality of floating connecting pieces 13 evenly distributed circumferentially around the central axis of the stroke seat 11 are connected between the stroke seat 11 and the hinge seat cylinder 122. The floating connecting piece 13 includes a floating block 131 hinged on the hinge seat cylinder 122. A guide post 132 is hinged on the floating block 131. The guide post 132 is slidably fitted in the radial direction on the stroke seat 11; Two tension springs 133 are hinged on the floating block 131. The two tension springs 133 are distributed on both sides of the guide post 132 and the other ends are both hinged on the stroke seat 11.

[0032] It should be noted that the pipe jacking machine is an existing pipe jacking equipment. In the pipe jacking machine, multiple hydraulic push rods for jointly forming a propulsion resultant force are usually horizontally arranged and installed. The multiple hydraulic push rods are circumferentially distributed around a certain center. Therefore, the resultant thrust force formed by the multiple hydraulic push rods is concentrated at the distribution center position. In the embodiment, the output ends of the multiple hydraulic push rods can be jointly installed with a mounting plate that facilitates the detachable installation of the travel seat 11. The travel seat 11 can be directly installed on the mounting plate, and the central axis of the travel seat 11 coincides with the distribution center of the multiple hydraulic push rods, so that the resultant thrust force is located at the central position of the travel seat 11. Under the joint restraint of the multiple floating connectors 13, the thrust of the pipe jacking machine acts indirectly on the floating base 12 through the travel seat 11 and the multiple floating connectors 13, and then drives the pipe jacking through the floating base 12. The floating base 12 retains the freedom of movement along any radial direction of the travel seat 11, but at the same time can always keep the propulsion resultant force in a horizontal state without tilting or deviation, so as to maintain the accuracy of the thrust reverse. In addition, it should be added that the device provided by the present invention is applicable to both the pipe jacking without pre-installed joints and the pipe jacking with pre-installed joints. In order to avoid interference, the thickness of the end clamping disc 121 is greater than the joint insertion depth of the pipe jacking with pre-installed joints.

[0033] As Figure 1 , Figure 3 and Figure 6 shown, a positioning mechanism 2 for positioning and docking between the two pipe jackings to be pushed and the already pushed pipe jackings is assembled on the propulsion contact surface of the end clamping disc 121; the positioning mechanism 2 includes an inner extension frame 21. The inner extension frame 21 includes two inner extension rods 211 horizontally welded on the end clamping disc 121 and two horizontally coaxial and relatively arranged slide rail discs 213. In order to improve the connection stability of the inner extension rods 211, sleeves for cooperating with and fixing the inner extension rods 211 are welded on the end clamping disc 121. One of the slide rail discs 213 is welded between the ends of the two inner extension rods 211 far from the end clamping disc 121. The slide rail disc 213 and the end clamping disc 121 are arranged with the central axes coinciding. Four slide rails are welded on the facing surfaces of the two slide rail discs 213, and the four slide rails are circumferentially and evenly distributed around the center of the slide rail disc 213. Four connecting rods 214 are fixedly connected between the two slide rail discs 213 by bolts, and the four connecting rods 214 and the four slide rails on the slide rail disc 213 are circumferentially and evenly spaced.

[0034] As Figure 3 and Figure 5As shown, positioning components 22 are assembled between two slide rails at opposite positions on the two slide rail discs 213; the positioning component 22 includes a sliding base 221 slidably installed between the two slide rails at opposite positions on the two slide rail discs 213. On the end face of the sliding base 221 that is perpendicular to the radial direction of the slide rail disc 213 and faces away from the center of the slide rail disc 213, a fixed clamping block 222 and a sliding clamping block 223 are assembled. The fixed clamping block 222 is fixed to the sliding base 221 by screws. On the end face of the sliding clamping block 223 that faces away from its clamping surface, a guide plate 224 is centrally fixed by screws. The guide plate 224 slidably penetrates and is fitted on the sliding base 221 along the sliding direction of the sliding base 221. The sliding clamping block 223 is also slidably installed on the fixed clamping block 222, and two inner clamping springs 225 are welded between the sliding clamping block 223 and the sliding base 221. The two inner clamping springs 225 are equidistantly distributed on both sides of the guide plate 224; in the same positioning component 22, the fixed clamping block 222 and the sliding clamping block 223 serve as two clamping parts, independently used to make inner support contact with the inner walls of the two jacking pipes respectively. The sliding clamping block 223 is arranged at a relatively farther position from the fixed clamping block 222 and the floating base 12; when the inner clamping springs 225 are not compressed by external forces, the clamping surface of the sliding clamping block 223 is farther from the center of the floating base 12 than the clamping surface of the fixed clamping block 222; the distribution positions of the fixed clamping block 222 and the sliding clamping block 223 and the distribution characteristics of their clamping surfaces determine that the sliding clamping block 223 is used to make inner support clamping on the inner wall of the jacking pipe that has been advanced, while the fixed clamping block 222 is used to make inner support clamping on the inner wall of the jacking pipe to be advanced, and the sliding clamping block 223 will complete the fixed clamping on the inner wall of the jacking pipe prior to the fixed clamping block 222.

[0035] As Figure 3 and Figure 5 shown, a driving assembly 23 for driving the four positioning components 22 to move synchronously is also assembled on the inner extension frame 21; the driving assembly 23 includes a hydraulic cylinder 231, a hinge seat 232 fixed to the output end of the hydraulic cylinder 231, and four connecting rods 233 commonly hinged on the hinge seat 232. A fixed seat 212 is sleeved and welded between the two inner extension rods 211. The hydraulic cylinder 231 is inserted into the fixed seat 212 and is fixed to the adjacent slide rail disc 213 of the fixed seat 212 by bolts; the four connecting rods 233 are correspondingly and cooperatively arranged with the four positioning components 22, and the other end of the connecting rod 233 is hinged to the sliding base 221 of the corresponding positioning component 22.

[0036] It should be added that for the convenience of construction operation, the same as the prior art, the pipe jacking machine is also equipped with a guiding support seat. The pipe jacking to be pushed can be placed on the guiding support seat, so that the pipe jacking is aligned with the predetermined laying route in the initial state. In addition, it should be noted that the guiding support seat needs to avoid the floating deviation correction seat 1 that moves during the pushing process. Therefore, the guiding support seat is installed in a lifting manner. When the positioning component 22 extends into the pipe jacking and completes the inner support and clamping, the guiding support seat can be lowered to the avoidance position.

[0037] During the construction of the open caisson pipe jacking, the open caisson is constructed first, and then the pipe jacking is carried out. During the pipe jacking construction process, the device provided by the present invention is used to guide and correct the deviation of the pipe jacking. The specific process is described as follows:

[0038] Open caisson construction stage

[0039] Open caissons are respectively excavated and built at the starting point and the ending point of the pipe laying route to be used as the launching shaft and the receiving shaft respectively. The open caisson construction process can be carried out according to the existing standards and construction methods.

[0040] Pipe jacking construction stage

[0041] The pipe jacking machine is fixedly placed in the launching shaft in the direction of the pipe laying. The pipe jacking machine is used to excavate the underground passage of the pipeline along the predetermined route. During the process of progressive excavation, the pipe jacking is pushed into the underground passage synchronously with the pipe jacking machine by the pipe jacking machine in cooperation with the deviation correction device provided by the present invention.

[0042] During the process of pushing the first pipe jacking, the deviation correction device is not docked and installed at the pushing end of the pipe jacking machine. Therefore, the first pipe jacking can be directly pushed into the excavated underground passage by the pushing end of the pipe jacking machine itself during the excavation process of the pipe jacking machine. After the first pipe jacking is completed, the deviation correction device is docked and installed at the pushing end of the pipe jacking machine for subsequent pipe jacking installation.

[0043] During the subsequent pipe jacking process, after the first pipe jacking is completed, the pipe jacking machine pauses. Subsequently, a new pipe jacking can be placed on the guiding support seat by a crane. The pipe jacking machine drives the deviation rectifying device to move closer to the pipe jacking, causing the positioning mechanism 2 to extend into both pipe jackings as a whole. Under the auxiliary guidance of the guiding support seat, the end chuck 121 pushes the pipe jacking to be advanced to move closer to the previous pipe jacking, enabling the ends of the two pipe jackings to complete docking. Subsequently, the hydraulic cylinder 231 is started, and the driving assembly 23 drives the four positioning components 22 to move synchronously away from the center of the slide rail disc 213. The four sliding clamping blocks 223 will come into contact with the inner wall of the previous pipe jacking in advance, causing the previous pipe jacking to be pre-internally supported and clamped. On the basis of preferentially stabilizing the previous pipe jacking, with continuous driving, the four fixed clamping blocks 222 will synchronously clamp on the inner wall of the pipe jacking to be advanced, thus achieving the precise docking and locking of the ends of the two pipe jackings. Under the dual effects of pushing and clamping and internal support clamping, the integrity between the two pipe jackings is improved. Subsequently, the guiding support seat is lowered to an avoidance position.

[0044] During pipe jacking, the pipe jacking machine starts again. The pipe jacking machine indirectly pushes the pipe jacking through the floating deviation rectifying seat 1. Under the action of the floating deviation rectifying seat 1, the positioning mechanism 2 drives the two pipe jackings to adaptively perform synchronous floating along with the active adjustment of the tunneling direction of the pipe jacking machine. However, the pushing force of the end chuck 121 on the pipe jacking always acts along the central axis direction of the two pipe jackings, ensuring the concentration and centering of the pushing force application, avoiding deviation between the two pipe jackings, and thus ensuring the tightness and accuracy of the docking of the ends of the two pipe jackings and the quality of the continuous laying of the entire pipeline.

[0045] The subsequent pipe jacking laying can be carried out section by section according to the above process until it is laid and connected to the receiving well. The specific pipe jacking construction state can be seen Figure 7 as shown.

[0046] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention 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 to the present invention.

[0047] In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, the terms "arranged", "connected", "installed", and "connected" 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 or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

[0048] The preferred embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and the devices and structures not described in detail should be understood to be implemented in a common manner in the art; any person skilled in the art can make many possible changes and modifications without departing from the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes, which does not affect the essence of the present invention. Therefore, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A caisson pipe jacking construction correction device, assembled on a pipe jacking propulsion machine, characterized in that: The device comprises: The floating deviation correcting seat includes a travel disc fixed to the propulsion end of the jacking propulsion machine and a floating base for propulsion contact with the end of the jacking pipe. A plurality of floating connectors distributed circumferentially around the central axis of the travel disc are connected between the travel disc and the floating base. Under the joint restraint of the plurality of floating connectors, the floating base can move along any radial direction of the travel disc. And a positioning mechanism, which is assembled on the floating base and is used for positioning and docking the two jacking pipes to be pushed and the two jacking pipes that have been pushed; the positioning mechanism includes a plurality of positioning components circumferentially distributed around the central axis of the floating base, and the plurality of positioning components can move synchronously in the radial direction of the floating base; the positioning component is provided with two clamping parts that are respectively in contact with the inner walls of the two jacking pipes independently, and when the positioning component moves in a direction away from the center of the floating base, the clamping component in contact with the inner wall of the jacking pipe that has been pushed contacts the jacking pipe before the other clamping component.

2. The device for correcting the deviation of caisson pipe jacking construction according to claim 1, characterized in that: The floating base comprises: An end chuck is used to push and contact the end of the jacking pipe to be pushed; the positioning mechanism is assembled on the end chuck; And a hinge seat cylinder is coaxially arranged and fixed on one end of the end clamping disc facing away from the positioning mechanism; a plurality of floating connecting members are connected between the travel disc and the hinge seat cylinder.

3. A caisson pipe jacking construction correction device according to claim 2, characterized in that: The floating connection comprises: A floating block is hinged on the hinge seat cylinder; The guide column is hinged on the floating block and is radially slidably mounted on the travel disc; And two tension springs are distributed on both sides of the guide column; the two ends of the tension spring are respectively hinged on the floating block and the travel disk.

4. The device for correcting the deviation of caisson pipe jacking construction according to claim 2 is characterized in that: The positioning component includes a sliding base arranged to slide radially along the floating base, the two clamping parts are a fixed clamping block and a sliding clamping block, the fixed clamping block is fixed on the sliding base, the sliding clamping block is slidably installed on the sliding base along the sliding direction of the sliding base, and the sliding clamping block is elastically connected to the sliding base, the sliding clamping block is far from the fixed clamping block to the floating base, and the clamping surface of the sliding clamping block is far from the clamping surface of the fixed clamping block to the center of the floating base.

5. The device for correcting the deviation of caisson pipe jacking construction according to claim 4 is characterized in that: The positioning mechanism also includes: The inner extension frame is fixed on the end clamping plate; the positioning component is slidably installed on the inner extension frame through a sliding base; And a driving assembly, which is assembled on the inner extension frame and is used for driving a plurality of positioning components to move synchronously.

6. The device for correcting the deviation of caisson pipe jacking construction according to claim 5, characterized in that: The inwardly extending frame comprises: A plurality of inner extension rods are horizontally fixed on the end clamping plate; The two slide rails are arranged horizontally opposite to each other, and the central axis of the slide rails coincides with the central axis of the floating base; a plurality of connecting rods are connected between the two slide rails, and one of the slide rails is fixed between the ends of a plurality of inner extension rods; the sliding base is radially slidably installed between the two slide rails.

7. The device for correcting the deviation of caisson pipe jacking construction according to claim 6, characterized in that: The drive assembly comprises: The power component is fixed on one of the slide rail discs, and the output end is in a telescopic drive arrangement; An articulated seat, fixed to the telescopic driving end of the power component; A plurality of connecting rods are arranged in one-to-one correspondence with a plurality of positioning components; one end of the connecting rod is hinged on the hinge seat, and the other end is hinged on the sliding base of the corresponding positioning component.

8. The device for correcting the deviation of caisson pipe jacking construction according to claim 4 is characterized by: A guide plate that is slidably matched with the sliding base is fixed on one end of the sliding clamping block that is away from the clamping surface, and a plurality of inner clamping springs are connected between the sliding clamping block and the sliding base.

9. The device for correcting the deviation of caisson pipe jacking construction according to claim 7, characterized in that: A fixing seat is commonly connected between the plurality of inner extension rods, and the power component is also fixed on the fixing seat.

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