Large-diameter ultra-long-distance linear pipe jacking device and method

Abstract

The invention relates to a large-diameter ultra-long-distance linear pipe jacking device and method, and belongs to the technical field of underground engineering, the large-diameter ultra-long-distance linear pipe jacking device comprises an oil cylinder and a cylinder frame, and the cylinder frame is provided with a position adjusting ring, a steel bar, a guide rod and a hanging frame; the position adjusting ring is rotationally arranged on the steel frame, the rotating shaft is the center line of the position adjusting ring, the center line of the position adjusting ring is horizontally arranged, and a vortex-shaped sliding rail is fixed to the side wall of one side of the position adjusting ring; the guide rod is fixed on the cylinder frame, and the length direction of the guide rod and the length of the steel bar are arranged along the radius length direction of the positioning ring; the side walls, close to the sliding rails, of the steel bars are sawtooth-shaped, the steel bars are meshed with the sliding rails, the ends, facing the center line of the position adjusting ring, of the steel bars are fixed to the hanging frame, the hanging frame is used for fixing the oil cylinder, and the steel bars slide relative to the guide rods in the length direction of the guide rods. And a driving assembly for driving the position adjusting ring to rotate is arranged on the cylinder frame. The position adjusting device has the effect that the position adjusting convenience of the oil cylinder on the oil cylinder frame is improved.

Description

Technical Field

[0001] The present application relates to the technical field of underground engineering, and particularly to a large-diameter and extra-long-distance linear pipe jacking device and method. Background Art

[0002] With the acceleration of the urbanization process, the demand for the development and utilization of underground space is increasing day by day, especially in the fields of urban underground pipeline laying, tunnel engineering, etc.

[0003] Currently, in pipe jacking technology, a backing and guide rails are installed in the launching shaft, an oil cylinder frame is arranged on the guide rails, a plurality of suitable oil cylinders are placed on the oil cylinder frame, and the position of the oil cylinder is adjusted so that the oil cylinder can apply a thrust to the pipe jacking.

[0004] In different pipe jacking projects, the diameters of the pipe jackings are different. For pipe jackings with different diameters, the position of the oil cylinder needs to be adjusted. Due to the limited distance between the oil cylinder frame and the inner wall of the launching shaft, the method of setting hydraulic cylinders in the horizontal or vertical direction to adjust the position of the oil cylinder cannot be realized. Usually, the oil cylinder is adjusted in position on the oil cylinder frame by a crane suspension, which has the defect of inconvenient position adjustment of the oil cylinder on the oil cylinder frame. Summary of the Invention

[0005] In order to improve the convenience of adjusting the position of the oil cylinder on the oil cylinder frame, the present application provides a large-diameter and extra-long-distance linear pipe jacking device and method.

[0006] In a first aspect, the present application provides a large-diameter and extra-long-distance linear pipe jacking device and method, adopting the following technical solutions: A large-diameter and extra-long-distance linear pipe jacking device includes an oil cylinder and a cylinder frame. A position adjustment ring, steel bars, guide rods, and a hanging frame are arranged on the cylinder frame. The position adjustment ring is rotatably arranged on the steel frame with its own center line as the rotation axis. The center line of the position adjustment ring is horizontally arranged. A spiral slide rail is fixed on the side wall of one side of the position adjustment ring. The guide rods are fixed on the cylinder frame. The length direction of the guide rods and the length of the steel bars are both arranged along the radius length direction of the position adjustment ring. The side wall of the steel bar close to the slide rail is serrated. The steel bar meshes with the slide rail. One end of the steel bar facing the center line of the position adjustment ring is fixed to the hanging frame. The hanging frame is used to fix the oil cylinder. The guide rods are inserted into the steel bars along the length direction of the steel bars. The steel bars are slidably arranged relative to the guide rods along the length direction of the guide rods. There are multiple groups corresponding to the steel bars, guide rods, and the hanging frame, and adjacent groups are arranged at intervals on the position adjustment ring. A driving component for driving the position adjustment ring to rotate is arranged on the cylinder frame.

[0007] By adopting the above technical solution, when it is necessary to adjust the position of the oil cylinder on the oil cylinder frame, the driving assembly is used to drive the adjusting ring to rotate. Since a spiral slide rail is fixed on the adjusting ring, and the steel bar is meshed with the slide rail, during the rotation of the adjusting ring, the steel bar will slide linearly along the length direction of the guide rod driven by the slide rail. And because the steel bar is fixed to the hanging frame, and the hanging frame is used to fix the oil cylinder, the sliding of the steel bar will drive the hanging frame and the oil cylinder to move together, thereby realizing the adjustment of the position of the oil cylinder. Compared with the traditional method of adjusting the position by suspending the oil cylinder by a crane, this method of using the adjusting ring and the slide rail to drive the steel bar to slide is more convenient, occupies less space, can quickly and accurately adjust the oil cylinder to the appropriate position, and improves the convenience of adjusting the position of the oil cylinder on the oil cylinder frame.

[0008] Optionally, the drive assembly includes a motor, a gear and a gear ring, the gear ring is fixed to the side of the positioning ring away from the steel bar, the motor is fixed to the cylinder frame, the output end of the motor is fixed to the center of the gear, and the gear is meshed with the gear ring.

[0009] By adopting the above technical solution, when the motor is started, the output end of the motor drives the gear to rotate. Since the gear is meshed with the gear ring, and the gear ring is fixed on the side of the positioning ring away from the steel bar, the rotation of the gear will drive the gear ring to rotate, and then drive the positioning ring to rotate. This combined drive mode of the motor, gear and gear ring can provide stable and reliable power, making the rotation of the positioning ring more stable, thereby ensuring that the steel bar can accurately slide along the guide rod driven by the slide rail, further improving the accuracy and convenience of the oil cylinder position adjustment.

[0010] Optionally, a cross bar is slidably arranged on the cylinder frame along the vertical direction, the cross bar is arranged along the horizontal direction, and there are multiple cross bars and they are distributed on both sides of the positioning ring.

[0011] By adopting the above technical solution, the crossbar is slidably arranged on the cylinder frame in the vertical direction and is distributed on both sides of the adjustment ring. This allows the height of the crossbar to be adjusted according to actual needs to adapt to the requirements of different diameter jacking pipes for the position of the oil cylinder. When the position of the oil cylinder is adjusted, it only needs to slide the crossbar to provide stable support for the oil cylinder.

[0012] Optionally, a bottom support is slidably provided on the cross bar, and the bottom support reciprocates along the length direction of the cross bar. The top surface of the bottom support is an arc-shaped concave surface, and the top surface of the bottom support abuts against the outer wall of the oil cylinder.

[0013] By adopting the above technical solution, the base bracket can provide stable support for the oil cylinder. When providing stable support for the oil cylinder, the position of the base bracket in the horizontal direction can be conveniently changed by sliding the base bracket, and the arc-shaped concave surface design can better fit the outer wall of the oil cylinder, thereby increasing the stability of the support.

[0014] Optionally, a plurality of positioning holes are provided on the cross bar, and adjacent positioning holes are spaced apart along the length direction of the cross bar; a groove is provided on the top of the base, a latch and a spring are provided in the groove, the bottom end of the latch passes through the base in the vertical direction and is inserted into the corresponding positioning hole, the top end of the latch is used to abut against the outer wall of the cylinder, the spring ring is sleeved on the outside of the latch, and the spring is used to bounce the latch upward.

[0015] By adopting the above technical solution, when the oil cylinder is placed on the base, the outer wall of the oil cylinder will press on the top of the latch, so that the latch overcomes the elastic force of the spring and moves downward, and the bottom end of the latch is inserted into the corresponding positioning hole, thereby fixing the base at a specific position on the crossbar. When the base needs to be moved, just remove the oil cylinder from the base, the spring will bounce the latch upward, so that the bottom end of the latch is separated from the positioning hole, and the base can slide freely on the crossbar. This matching method of the latch and the positioning hole can easily position and unlock the base.

[0016] Optionally, the guide rod is hollow inside, a first through hole is provided on the side wall of the guide rod facing the slide rail, a plurality of second through holes are provided on the side wall of the steel bar facing the slide rail, and adjacent second through holes are spaced apart along the length direction of the steel bar; an oil filling pipe is connected to the end of any guide rod away from the steel bar, and the end of the oil filling pipe away from the guide rod is used to connect with an external oil pump; when the steel bar slides relative to the guide rod, each second through hole has a chance to overlap with the first through hole.

[0017] By adopting the above technical solution, when the external oil pump injects lubricating oil into the guide rod through the oil filling pipe, since the guide rod is hollow inside and has a first through hole, and the steel bar has multiple second through holes, during the sliding process of the steel bar relative to the guide rod, each second through hole will overlap with the first through hole. When the two overlap, the lubricating oil will flow from the first through hole into the second through hole, thereby lubricating the contact surface between the steel bar and the slide rail, reducing the friction when the steel bar slides, making the oil cylinder position adjustment smoother, and at the same time extending the service life of the steel bar and the guide rod, improving the reliability and stability of the entire device.

[0018] Optionally, a pressure plate is slidably arranged in the vertical direction in the hanging frame, the midpoint of the pressure plate itself is located on the center line of the steel bar, the midpoint of the pressure plate itself is the highest point and the two ends are symmetrically inclined downward, and the pressure plate abuts against the outer wall of the top of the cylinder.

[0019] By adopting the above technical solution, this design can prevent the cylinder from shaking during the cylinder position adjustment process, thereby ensuring the accuracy and stability of the cylinder position adjustment. Since the pressure plate is higher in the middle and lower on both sides and the midpoint position of the pressure plate is limited, the cylinder must be located directly below the steel bar, which is convenient for precise control of the cylinder position.

[0020] Optionally, a clamp is provided on the base support, one end of the clamp is hinged to the base support, and the other end of the clamp spans across the top of the base support and is connected to the base support buckle.

[0021] By adopting the above technical solution, after the oil cylinder is placed on the bottom support, one end of the clamp is rotated around the hinge point, so that the other end spans across the top of the bottom support and is snap-connected to the bottom support. The clamp can further fix the oil cylinder, prevent the oil cylinder from sliding or shaking on the bottom support, and enhance the fixing effect on the oil cylinder.

[0022] Optionally, a sealing ring is arranged between the steel bar and the guide rod, and the sealing ring is located at one end of the steel bar away from the hanging frame.

[0023] By adopting the above technical solution, the sealing ring can prevent the lubricating oil from leaking from the gap between the steel bar and the guide rod, ensuring that the lubricating oil can effectively lubricate the contact surface between the steel bar and the guide rod. At the same time, the sealing ring can also prevent dust, sundries, etc. from entering between the steel bar and the guide rod, reducing wear and failures, extending the service life of the device, and improving the stability and reliability of the entire device.

[0024] In a second aspect, the present application provides a large-diameter and extra-long-distance linear pipe jacking device and method, adopting the following technical solutions: A method for a large-diameter and extra-long-distance linear pipe jacking device includes the following steps: S1. Place the oil cylinder on the cylinder frame; S2. Then lift and place the assembled cylinder frame into the launching shaft and install it in place; S3. According to the diameter of the pipe jacking, start the driving assembly to drive the adjustment ring to rotate, thereby adjusting the position of the oil cylinder; S4. After the oil cylinder is adjusted, slide the cross bar to the bottom of the oil cylinder to support the oil cylinder.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. By using the ingenious design of the adjustment ring and the spiral slide rail, combined with the driving assembly, the position of the oil cylinder can be adjusted quickly and accurately, abandoning the cumbersome method of traditional crane suspension adjustment, improving the adjustment convenience, reducing the floor area, significantly improving the construction efficiency, and reducing the construction time cost; 2. From the combined support of the cross bar and the bottom support, to the precise positioning of the pin and the positioning hole, to the reinforcement of the oil cylinder by the clamp, and the pressure plate to prevent the oil cylinder from shaking, each component works together to provide all-round and multi-level stability guarantee for the oil cylinder during the pipe jacking operation, ensuring the safety and reliability of the construction process; 3. The lubricating oil injection system between the guide rod and the steel bar, combined with the sealing of the lubricating oil by the sealing ring and the blocking of impurities, effectively reduces the friction and wear between components, extends the service life of the device, improves the reliability of the entire device in the long-term complex construction environment, and reduces the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of an embodiment of the present application; Figure 2 is a schematic structural diagram of the driving component; Figure 3 is a schematic partial structural diagram of the bottom bracket; Figure 4 is a partial structural cross-sectional view of the first through hole; Figure 5 is a schematic partial structural diagram of the hanging frame.

[0027] Explanation of reference numerals: 1, cylinder frame; 11, cross bar; 12, positioning hole; 2, adjustment ring; 21, slide rail; 3, steel bar; 31, second through hole; 32, sealing ring; 4, guide rod; 41, first through hole; 42, oil injection pipe; 5, hanging frame; 51, pressing plate; 52, screw; 53, adjusting cylinder; 6, driving component; 61, motor; 62, gear; 63, gear ring; 7, bottom bracket; 71, groove; 72, spring; 73, bolt; 74, clamp;. Detailed implementation manners

[0028] The following further elaborates on the present application in conjunction with the attached Figures 1 - 5 drawings for a more detailed description.

[0029] An embodiment of the present application discloses a large-diameter and long-distance linear pipe jacking device.

[0030] Referring to Figure 1 , a large-diameter and long-distance linear pipe jacking device includes a cylinder frame 1. The cylinder frame 1 serves as the support structure of the entire device and is stably placed in the launching shaft. A positioning ring 2 is arranged on the cylinder frame 1. The positioning ring 2 is rotatably arranged on the cylinder frame 1 (such as a bearing) to ensure that it can rotate flexibly around its own center line, and the center line of the positioning ring 2 remains horizontal. On one side wall of the positioning ring 2, a spiral slide rail 21 is fixed by welding or other firm connection methods. The shape design of the slide rail 21 is one of the key factors for realizing the position adjustment of the oil cylinder. Referring to Figure 1, a guide rod 4 and a steel bar 3 are provided on the cylinder frame 1. The guide rod 4 is firmly fixed on the cylinder frame 1 by welding or bolting, and its length direction is strictly set along the radius length direction of the positioning ring 2. Similarly, the length direction of the steel bar 3 is also consistent with the radius direction of the positioning ring 2. The side wall of the steel bar 3 close to the slide rail 21 is processed into a serrated shape, and the serrated structure is used to achieve precise meshing with the slide rail 21. A hanging frame 5 is fixed to one end of the steel bar 3 facing the center line of the positioning ring 2, and the hanging frame 5 is fixedly connected by welding or bolting. The hanging frame 5 is used to firmly fix the oil cylinder to ensure the stability of the oil cylinder during position adjustment and subsequent operations. The guide rod 4 is inserted into the steel bar 3 along the length direction of the steel bar 3, and the steel bar 3 can slide relatively along the length direction of the guide rod 4. This sliding fit provides a basis for linear motion for the oil cylinder position adjustment. There are multiple groups of steel bars 3, guide rods 4 and hanging frames 5, and adjacent groups are evenly spaced on the positioning ring 2 to ensure uniform and stable support and position adjustment capabilities for the oil cylinder. In this embodiment, three groups are provided. refer to Figure 1 and Figure 2 The cylinder frame 1 is also provided with a driving assembly 6, which includes a motor 61, a gear 62 and a ring gear 63, wherein the motor 61 is fixed to a suitable position of the cylinder frame 1 by bolts or welding, and the output end of the motor 61 is fixed to the center of the gear 62 by key connection, etc., to ensure that the power of the motor 61 can be effectively transmitted to the gear 62. The ring gear 63 is fixed to the side of the adjustment ring 2 away from the steel bar 3, and is also connected by welding or bolts to ensure the firmness of the connection. The gear 62 and the ring gear 63 mesh with each other. When the motor 61 is started, its output shaft drives the gear 62 to rotate, and then drives the adjustment ring 2 to rotate through the meshing action of the gear 62 and the ring gear 63, thereby realizing the power input for adjusting the position of the oil cylinder.

[0031] refer to Figure 1 and Figure 3, a guide rail or chute structure for the cross bar 11 to slide vertically is provided on the cylinder frame 1. The cross bar 11 is matched with this guide rail or chute through structures such as sliders to achieve vertical sliding. There are multiple cross bars 11 symmetrically distributed on both sides of the adjustment ring 2. This distribution method can provide more choices and adaptability for the support of the oil cylinder in pipe jacking operations with different diameters. Multiple bottom supports 7 are provided on the cross bar 11. The bottom support 7 and the cross bar 11 achieve reciprocating sliding along the length direction of the cross bar 11 through the cooperation mode of the slider and the guide rail. The top surface of the bottom support 7 is processed into an arc-shaped concave surface, which can better fit the outer wall of the oil cylinder and increase the stability of the support. On the cross bar 11, a plurality of positioning holes 12 are evenly opened along its length direction, and adjacent positioning holes 12 are arranged at intervals. A groove 71 is opened at the top of the bottom support 7. A plug pin 73 and a spring 72 are placed in the groove 71. The spring 72 is sleeved outside the plug pin 73, and one end of the spring 72 is fixed to the bottom of the groove 71, and the other end is fixed to the outer wall of the plug pin 73. When the oil cylinder is placed on the bottom support 7, the outer wall of the oil cylinder applies pressure to the top end of the plug pin 73, causing the plug pin 73 to move downward against the elastic force of the spring 72. The bottom end of the plug pin 73 is inserted into the corresponding positioning hole 12, thereby fixing the bottom support 7 at a specific position on the cross bar 11. When it is necessary to move the bottom support 7, the oil cylinder is removed from the bottom support 7, and the elastic force of the spring 72 causes the plug pin 73 to bounce upward, and the bottom end of the plug pin 73 disengages from the positioning hole 12. At this time, the bottom support 7 can slide freely on the cross bar 11. Only when the position of the oil cylinder needs to be adjusted again, it is necessary to correspondingly adjust the position of the bottom support 7, which is in line with the usage scenario. Reference Figure 1 and Figure 4 , the inside of the guide rod 4 is a hollow structure. A first through hole 41 is opened on the side wall of the guide rod 4 facing the slide rail 21. A plurality of second through holes 31 are evenly opened along the length direction on the side wall of the steel bar 3 facing the slide rail 21, and adjacent second through holes 31 are arranged at intervals. An oil injection pipe 42 is connected to one end of any guide rod 4 away from the steel bar 3. The end of the oil injection pipe 42 away from the guide rod 4 can be connected to an external oil pump through a quick connector or other means. When the external oil pump works, lubricating oil enters the inside of the guide rod 4 through the oil injection pipe 42. During the process of the steel bar 3 sliding relative to the guide rod 4, each second through hole 31 will coincide with the first through hole 41. At this time, the lubricating oil flows from the first through hole 41 into the second through hole 31, thereby lubricating the contact surface between the steel bar 3 and the slide rail 21, reducing the friction force when the steel bar 3 slides, and extending the service life of the steel bar 3 and the slide rail 21. Between the steel bar 3 and the guide rod 4, a sealing ring 32 is provided at one end of the steel bar 3 away from the hanging frame 5. The sealing ring 32 is installed in the gap between the steel bar 3 and the guide rod 4 by means of interference fit or the like, which is used to prevent the leakage of lubricating oil and the entry of dust, sundries, etc. between the steel bar 3 and the guide rod 4, and further ensure the normal operation and service life of the device. Reference Figure 5, a pressing plate 51 is slidably arranged vertically inside the hanging frame 5. A screw rod 52 and an adjusting cylinder 53 are vertically arranged on the top of the pressing plate 51. The top end of the screw rod 52 is fixedly connected to the inner wall of the top of the hanging frame 5. The adjusting cylinder 53 is threadedly connected to the bottom end of the screw rod 52, and the bottom end of the adjusting cylinder 53 is rotatably connected to the pressing plate 51. That is, by rotating the adjusting cylinder 53, the pressing plate 51 can be moved up or down. The two ends of the pressing plate 51 are vertically limited with the vertical side frames of the hanging frame 5. For example, sliding grooves are formed in the vertical side frames of the hanging frame 5, and the two ends of the pressing plate 51 are slidably inserted into the corresponding sliding grooves. The midpoint of the pressing plate 51 itself is located on the center line of the steel bar 3, and the midpoint of the pressing plate 51 itself is the highest point, and the two ends are symmetrically inclined downward. When the oil cylinder is installed inside the hanging frame 5, the pressing plate 51 abuts against the outer wall of the top of the oil cylinder. During the process of adjusting the position of the oil cylinder, the pressing plate 51 can prevent the oil cylinder from shaking and ensure that the position of the oil cylinder can be in the exact middle of the hanging frame 5. Reference Figure 3 , a clamp 74 is arranged on the bottom support 7. One end of the clamp 74 is hinged to the outer wall of one side of the bottom support 7, so that the clamp 74 can rotate around the hinge point. The other end of the clamp 74 is snap-connected to the outer wall of the other side of the bottom support 7. After the oil cylinder is placed on the bottom support 7, the other end of the clamp 74 is spanned across the top of the bottom support 7 and then connected to the bottom support 7 through connection means such as snap connection. The clamp 74 can further fix the oil cylinder, prevent the oil cylinder from sliding or shaking on the bottom support 7, and enhance the fixing effect on the oil cylinder. The implementation principle of the large-diameter and extra-long-distance linear pipe jacking device in the embodiment of the present application is as follows: Before the pipe jacking operation, first install the oil cylinder inside the hanging frame 5, and use equipment such as a crane to lift the cylinder frame 1 equipped with the oil cylinder and place it in the launching shaft and install it in place. According to the diameter of the pipe jacking, start the motor 61. The motor 61 drives the gear 62 to rotate, and then drives the adjustment ring 2 to rotate. The slide rail 21 on the adjustment ring 2 drives the steel bar 3 engaged with it to slide along the guide rod 4, so as to realize the adjustment of the position of the oil cylinder. After the position of the oil cylinder is adjusted, slide the cross bar 11 to a suitable position at the bottom of the oil cylinder, and use the cooperation of the pin 73 and the positioning hole 12 to fix the bottom support 7 on the cross bar 11 to provide stable support for the oil cylinder. During the whole operation process, the lubricating oil injection system between the guide rod 4 and the steel bar 3 and the sealing ring 32 work together to ensure the smooth operation and long-term reliability of the device; the pressing plate 51 and the clamp 74 respectively fix the oil cylinder from the top and bottom of the oil cylinder to ensure the stability of the oil cylinder during the pipe jacking operation, so as to efficiently and safely complete the large-diameter and extra-long-distance linear pipe jacking operation.

[0032] The embodiment of the present application also discloses a method for a large-diameter and extra-long-distance linear pipe jacking device.

[0033] It includes the following steps: S1. Place the oil cylinder on the cylinder frame 1; S2. Then lift the assembled cylinder frame 1 and place it in the launching shaft and install it in place; S3. According to the diameter of the jacking pipe, start the driving assembly 6 to drive the position-adjusting ring 2 to rotate, thereby adjusting the position of the oil cylinder; S4. After the oil cylinder is adjusted, slide the cross bar 11 to the bottom of the oil cylinder to support the oil cylinder.

[0034] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A large-diameter and ultra-long-distance linear pipe jacking device, comprising a cylinder and a cylinder frame (1), characterized in that: The cylinder frame (1) is provided with a positioning ring (2), a steel bar (3), a guide rod (4) and a hanging frame (5); the positioning ring (2) is rotatably arranged on the steel frame and the rotation axis is the center line of the positioning ring (2), the center line of the positioning ring (2) is arranged horizontally, and a spiral slide rail (21) is fixed on the side wall of one side of the positioning ring (2); the guide rod (4) is fixed on the cylinder frame (1), and the length direction of the guide rod (4) and the length of the steel bar (3) are arranged along the radial length direction of the positioning ring (2); the side wall of the steel bar (3) close to the slide rail (21) is serrated, The steel bar (3) is meshed with the slide rail (21), and one end of the steel bar (3) facing the center line of the positioning ring (2) is fixed to the hanging frame (5), and the hanging frame (5) is used to fix the oil cylinder. The guide rod (4) is inserted into the steel bar (3) along the length direction of the steel bar (3), and the steel bar (3) is slidably arranged relative to the guide rod (4) along the length direction of the guide rod (4); the steel bar (3), the guide rod (4) and the hanging frame (5) are correspondingly arranged in a plurality of groups, and adjacent groups are arranged at intervals on the positioning ring (2); and a driving component (6) for driving the positioning ring (2) to rotate is arranged on the cylinder frame (1).

2. A large-diameter and ultra-long-distance linear pipe jacking device according to claim 1, characterized in that: The driving assembly (6) comprises a motor (61), a gear (62) and a ring gear (63); the ring gear (63) is fixed to a side of the positioning ring (2) facing away from the steel bar (3); the motor (61) is fixed to the cylinder frame (1); the output end of the motor (61) is fixed to the center of the gear (62); and the gear (62) is meshed with the ring gear (63).

3. A large-diameter and ultra-long-distance linear pipe jacking device according to claim 1, characterized in that: A cross bar (11) is slidably arranged on the cylinder frame (1) in a vertical direction. The cross bar (11) is arranged in a horizontal direction. A plurality of cross bars (11) are arranged and are distributed on both sides of the positioning ring (2).

4. A large-diameter and ultra-long-distance linear pipe jacking device according to claim 3, characterized in that: A bottom bracket (7) is slidably arranged on the cross bar (11), and the bottom bracket (7) reciprocates along the length direction of the cross bar (11). The top surface of the bottom bracket (7) is an arc-shaped concave surface, and the top surface of the bottom bracket (7) abuts against the outer wall of the oil cylinder.

5. A large-diameter and ultra-long-distance linear pipe jacking device according to claim 4, characterized in that: The cross bar (11) is provided with a plurality of positioning holes (12), and adjacent positioning holes (12) are spaced apart along the length direction of the cross bar (11); a groove (71) is provided at the top of the bottom bracket (7), a latch (73) and a spring (72) are arranged in the groove (71), the bottom end of the latch (73) passes through the bottom bracket (7) in the vertical direction and is inserted into the corresponding positioning hole (12), the top end of the latch (73) is used to abut against the outer wall of the oil cylinder, the spring (72) is sleeved on the outside of the latch (73), and the spring (72) is used to bounce the latch (73) upward.

6. The large-diameter and ultra-long-distance linear pipe jacking device according to claim 1, characterized in that: The guide rod (4) is hollow inside, and a first through hole (41) is formed on the side wall of the guide rod (4) facing the slide rail (21), and a plurality of second through holes (31) are formed on the side wall of the steel bar (3) facing the slide rail (21), and adjacent second through holes (31) are formed at intervals along the length direction of the steel bar (3); an oil injection pipe (42) is connected to one end of any guide rod (4) away from the steel bar (3), and the end of the oil injection pipe (42) away from the guide rod (4) is used to communicate with an external oil pump; when the steel bar (3) slides relative to the guide rod (4), each second through hole (31) has a chance to overlap with the first through hole (41).

7. The large-diameter and ultra-long-distance linear pipe jacking device according to claim 1 is characterized by: A pressing plate (51) is slidably arranged in the vertical direction in the hanging frame (5). The midpoint of the pressing plate (51) is located on the center line of the steel bar (3). The midpoint of the pressing plate (51) is the highest point and both ends are symmetrically inclined downward. The pressing plate (51) abuts against the outer wall of the top of the oil cylinder.

8. The large-diameter and ultra-long-distance linear pipe jacking device according to claim 4 is characterized by: The base bracket (7) is provided with a clamp (74), one end of the clamp (74) is hinged to the base bracket (7), and the other end of the clamp (74) spans the top of the base bracket (7) and is buckled and connected to the base bracket (7).

9. The large-diameter and ultra-long-distance linear pipe jacking device according to claim 6, characterized in that: A sealing ring (32) is provided between the steel bar (3) and the guide rod (4), and the sealing ring (32) is located at one end of the steel bar (3) away from the hanging frame (5).

10. A method for applying a large-diameter ultra-long-distance linear pipe jacking device as claimed in claim 3, characterized in that: The following steps are involved: S1, the oil cylinder is placed on the cylinder frame (1); S2, then hoisting the assembled cylinder frame (1) into the launching well and installing it in place; S3, according to the diameter of the jacking pipe, start the driving assembly (6) to drive the adjusting ring (2) to rotate, thereby adjusting the position of the oil cylinder; S4. After the oil cylinder is adjusted, slide the cross bar (11) to the bottom of the oil cylinder to support the oil cylinder.

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