Pipe-jacking pipe joint hoisting steering device for municipal engineering

Abstract

The utility model relates to a municipal engineering jacking pipe joint hoisting steering device which comprises a rotating structure and a hoisting structure, the rotating structure comprises a first disc and a second disc which are vertically distributed and horizontally arranged, and a cylinder arranged on the circumferential side walls of the first disc and the second disc in a sleeving mode, and the upper end face of the cylinder is fixedly provided with a first annular plate in a covering mode; a second annular plate is integrally formed on the lower end face of the cylinder, the inner diameter of the second annular plate is smaller than the diameter of the second disc, a first motor is fixed to the lower end face of the second annular plate, an output shaft of the first motor is coaxially and rotationally connected with a first gear, a fluted disc is integrally formed on the lower end face of the second disc, and the first gear and the fluted disc rotate in an engaged mode. The lifting structure comprises a plurality of lifting rings fixed to the upper end face and the lower end face of the rotating structure, and lifting hooks are fixedly connected to the lifting rings in a hung mode.

Description

Technical Field

[0001] The present application relates to the field of pipe segment hoisting and steering devices, and in particular to a pipe segment hoisting and steering device for a municipal engineering jacking pipe. Background Art

[0002] The pipe jacking technology in municipal engineering construction refers to a construction method that uses equipment to gradually push prefabricated box-shaped or circular structures into the roadbed to form a three-dimensional cross-channel or culvert. It is widely used in municipal engineering projects such as underground pipelines and street tunnels. This technology is a trenchless technology that effectively ensures the safety of ground buildings, with low noise and dust during construction and good environmental protection effects.

[0003] At present, the jacking pipe lifting device generally adopts a lifting structure of a rigid boom. The rigid boom is retractable. A steel wire rope is installed at the very end of the rigid boom. The lower end of the steel wire rope is connected to a hook for lifting the jacking pipe section. When the jacking pipe lifting operation is carried out, the on-site construction personnel use the lifting equipment to lift each group of jacking pipe sections into the working well one by one. Since the extension direction of the jacking pipe inside the working well is fixed, it is necessary to use manpower to rotate the jacking pipe sections inside the working well during the current construction process to keep the jacking pipe sections facing the extension direction of the jacking pipe.

[0004] The inventors believe that the following defects exist: in the process of adjusting the direction of the jacking pipe section, due to the complex construction conditions at the bottom of the working well, limited working space, and the high labor intensity and difficulty coefficient of manually rotating the jacking pipe section, there is room for improvement. Utility Model Content

[0005] In order to achieve direction adjustment of the jacking pipe section during the hoisting process and facilitate the installation of the jacking pipe section, the present application provides a jacking pipe section hoisting and steering device for municipal engineering.

[0006] The present application provides a municipal engineering pipe jacking section hoisting and steering device adopts the following technical solution:

[0007] A pipe section hoisting and steering device for a municipal engineering project comprises a rotating structure and a hoisting structure, wherein the rotating structure comprises a first disc and a second disc which are parallelly distributed and horizontally arranged up and down, and a cylinder which is sleeved on the circumferential side walls of the first disc and the second disc, wherein the upper end surface of the cylinder is covered with a first annular plate, and the lower end surface of the cylinder is integrally formed with a second annular plate, wherein the inner diameter of the second annular plate is smaller than the diameter of the second disc, a first bolt is inserted and fixed between the first annular plate and the first disc, a second bolt is passed through between the first annular plate and the cylinder, and the lower end of the second bolt is passed through and inserted into the second annular plate and is tightened and fixed There is a nut, and a first base is installed on the lower end surface of the second annular plate, and a first motor is clamped and fixed in the first base, and the output shaft of the first motor is coaxially connected to the first gear, and a toothed plate is fixed on the lower end surface of the second disc, and the first gear meshes and rotates with the toothed plate; the lifting structure includes a plurality of groups of lifting rings fixed to the upper end surface of the first disc and the lower end surface of the second disc and distributed at equal angles along the circumference, and each group of the lifting rings is hung and fixed with a hook, and a first steel wire rope is connected to the lifting equipment between the hook on the first disc and the lifting equipment, and a second steel wire rope is connected to the hook on the second disc and the ring.

[0008] By adopting the above technical scheme, when the top pipe section is hoisted, since the extension direction of the top pipe inside the working well is fixed, it is necessary to use manpower to rotate the top pipe section inside the working well during the current construction process to keep the top pipe section facing the extension direction of the top pipe; the construction situation at the bottom of the working well is complicated, the working space is limited, and the labor intensity of manually rotating the top pipe section is high, and the operation difficulty coefficient is high; in view of the problems existing in the prior art, the present application proposes a top pipe section hoisting and steering device; when performing the top pipe section hoisting operation, a rotating structure is installed and fixed in the hoisting and steering device, and the gear disc on the lower end face of the second disc is driven to rotate by the first motor, and the gear disc drives the second disc to rotate in the cylinder, thereby realizing the direction adjustment of the top pipe section after lifting, so as to achieve the top pipe section facing the extension direction of the top pipe, reducing the labor intensity of manually rotating the top pipe section, and the rotating structure replaces manpower to pull the top pipe section to adjust the direction, reducing the operation difficulty coefficient, thereby improving construction efficiency.

[0009] Preferably, a limiting ring is integrally formed around the lower end surface of the second disc along the circumference, and a groove matching the shape of the limiting ring is provided around the upper end surface of the second annular plate along the circumference, and the limiting ring rotates in cooperation with the groove.

[0010] By adopting the above technical solution, a limiting ring is provided on the lower end surface of the second disc to cooperate with the groove shape provided on the upper end surface of the second annular plate. When the top pipe section is hoisted, the direct contact area between the lower end surface of the second disc and the second annular plate is reduced, the resistance of the second annular plate to the second disc is reduced, and the smoothness of the rotation of the second disc along the second annular plate is improved.

[0011] Preferably, a second base is fixed to the lower end surface of the second annular plate, a second motor is clamped and fixed inside the second base, the second motor and the first motor are symmetrically distributed along the center of the second disk, the output shaft of the second motor is coaxially connected to a second gear, and the second gear rotates in meshing engagement with the gear disk.

[0012] By adopting the above technical scheme, the second motor and the first motor are symmetrically distributed along the center of the second disc. The second motor acts as a counterweight, which reduces the shaking of the second disc due to uneven force during rotation and ensures the stability of the rotation of the second disc. At the same time, the setting of the second motor provides a second power source for the hoisting steering device. The first motor and the second motor synchronously drive the gear disc to rotate. When hoisting a jacking pipe section with a large mass, the normal rotation of the second disc is guaranteed.

[0013] Preferably, the distance between the lower end surface of the first annular plate and the upper end surface of the second annular plate is greater than the sum of the thicknesses of the first circular disk and the second circular disk.

[0014] By adopting the above technical solution, the distance between the first annular plate and the second annular plate reserves rotation space for the second disc when performing lifting operations, and the distance between the lower end surface of the first annular plate and the upper end surface of the second annular plate is greater than the sum of the thicknesses of the first disc and the second disc. When performing lifting operations, a certain gap is left between the first disc and the second disc, thereby avoiding friction between the first disc and the second disc, and further reducing the friction resistance of the second disc during rotation.

[0015] Preferably, a plurality of groups of first reinforcing ribs are tension-mounted on the inner circumferential side wall of the first annular plate.

[0016] By adopting the above technical scheme, the setting of the first reinforcing rib improves the structural stability of the first annular plate and reduces the deformation of the first annular plate during the force-bearing process. When the top pipe section is hoisted, the upper end surface of the first disc abuts against the first reinforcing rib, which increases the force-bearing area between the first disc and the first annular plate, thereby enhancing the structural stability of the rotating structure, ensuring the hoisting and installation safety of the hoisting steering device, and extending the service life of the first disc.

[0017] Preferably, a plurality of groups of second reinforcing ribs are fixedly mounted on the lower end surface of the second disc, and each group of the second reinforcing ribs is mounted on the inner side of the toothed disc.

[0018] By adopting the above technical solution, when the jacking pipe section is being hoisted, the jacking pipe section is hoisted on the lower end surface of the second disc, and the second disc is easily deformed due to force. The provision of the second reinforcing rib reduces the deformation caused by the second disc during the force-bearing process, ensures the structural stability of the second disc, and extends the service life of the second disc.

[0019] Preferably, the first disc and the second disc are both provided with vertically opposite light holes at their center positions, and limiting rods are vertically inserted through the two groups of light holes, and a limiting block is integrally formed at the upper end of the limiting rod, and the limiting block is clamped on the upper end surface of the first disc.

[0020] By adopting the above technical solution, the limiting rod vertically passes through the center positions of the first disc and the second disc, thereby limiting the center position of the second disc, reducing the collision between the second disc and the inner wall of the cylinder, and further reducing the wear between the second disc and the cylinder, ensuring that the second disc always rotates around the limiting rod during lifting operations, thereby improving the stability of the second annular plate during rotation.

[0021] Preferably, a uniformly distributed grease layer is coated between the limiting ring and the groove.

[0022] By adopting the above technical solution, when the first motor drives the second disc to rotate, a grease layer is coated between the limit ring and the groove, which is beneficial to reduce the friction between the two, while reducing the resistance of the second annular plate to the second disc, thereby improving the smoothness of the rotation of the second disc along the second annular plate.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] By installing and fixing a rotating structure in the hoisting steering device, the first motor drives the gear plate on the lower end surface of the second disc to rotate, and the gear plate drives the second disc to rotate in the cylinder, the direction of the jacking pipe section after lifting is adjusted to achieve that the jacking pipe section is directly opposite to the extension direction of the jacking pipe, thereby reducing the labor intensity of manually rotating the jacking pipe section. The rotating structure replaces human power to pull the jacking pipe section to adjust the direction, reduces the difficulty coefficient of the operation, and thus improves the construction efficiency.

[0025] By setting the limiting ring and the groove and coating a grease layer between the limiting ring and the groove, the friction between the second disc and the second annular plate is reduced, thereby improving the rotation smoothness of the second disc; the setting of the limiting rod realizes the limitation of the center of the second disc, ensuring that the second disc always rotates around the limiting rod during lifting operations, thereby improving the stability of the second disc during rotation.

[0026] By setting the first motor and the second motor, the second disc is evenly stressed during rotation, thereby ensuring the stability of the rotation of the second disc; at the same time, the setting of the second motor provides a second power source for the hoisting steering device; the setting of the first reinforcement rib and the second reinforcement rib ensures the firmness of the hoisting steering device and extends the service life of the rotating structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0028] Figure 2 This is a schematic diagram of the overall structure of another perspective of the embodiment of the present application;

[0029] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0030] Figure 4 A partial cross-sectional view of the lifting device in this application;

[0031] Explanation of the accompanying drawings: 1. first disc; 2. second disc; 3. cylinder; 4. first annular plate; 5. second annular plate; 6. first bolt; 7. second bolt; 8. first base; 9. first motor; 10. first gear; 11. lifting ring; 12. lifting hook; 13. first steel wire rope; 14. second steel wire rope; 15. limiting ring; 16. groove; 17. second base; 18. second motor; 19. second gear; 20. first reinforcing rib; 21. second reinforcing rib; 22. light hole; 23. limiting rod; 24. limiting block; 25. nut; 26. toothed disc; 27. top pipe section; 28. ring. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-4 This application is described in further detail.

[0033] The embodiment of the present application discloses a pipe jacking section hoisting and steering device for municipal engineering. Figure 1 and Figure 2The hoisting and steering device includes a first disc 1 and a second disc 2 which are horizontally distributed up and down, and the specifications of the first disc 1 and the second disc 2 are the same; the hoisting and steering device also includes a cylinder 3 and a first annular plate 4, the axis of the cylinder 3 is vertically distributed, and the lower edge of the inner circumference of the cylinder 3 is integrally formed with a second annular plate 5.

[0034] Reference Figure 1 and Figure 2 The first disc 1 and the second disc 2 are located inside the cylinder 3, the inner diameter of the second annular plate 5 is smaller than the diameter of the second disc 2, and the outer circumferential surfaces of the first disc 1 and the second disc 2 are clearance-matched with the inner circumferential surface of the cylinder 3; the first annular plate 4 is located at the upper end of the cylinder 3, the outer diameter of the first annular plate 4 is coplanar with the outer diameter of the cylinder 3, and the inner diameter of the first annular plate 4 is smaller than the inner diameter of the cylinder 3.

[0035] Reference Figure 1 , Figure 2 and Figure 3 A threaded hole is provided along the inner circumferential edge of the upper end surface of the first annular plate 4 and a first bolt 6 threadedly connected to the first disc 1 is inserted; the provision of the first bolt 6 realizes the position fixation of the first annular plate 4 and the first disc 1; a threaded hole is provided along the outer circumferential edge of the upper end surface of the first annular plate 4 and a second bolt 7 is inserted, the second bolt 7 penetrates the cylinder 3 and the second annular plate 5 and is threadedly connected with a nut 25, the nut 25 is located at the lower end circumferential surface of the second annular plate 5 and is tightly pressed against the lower end circumferential surface of the second annular plate 5; the provision of the second bolt 7 and the nut 25 realizes the fixation between the first annular plate 4 and the cylinder 3, and ensures the stability of the rotating structure.

[0036] Reference Figure 1 and Figure 2 The distance between the lower end surface of the first annular plate 4 and the upper end surface of the second annular plate 5 is greater than the sum of the thicknesses of the first disc 1 and the second disc 2; when performing a hoisting operation, a certain gap is left between the first disc 1 and the second disc 2, thereby avoiding friction between the first disc 1 and the second disc 2 and reducing the friction resistance of the second disc 2 during rotation.

[0037] Reference Figure 1 and Figure 2 A plurality of first reinforcing ribs 20 are welded on the inner circumferential side wall of the first annular plate 4; the provision of the first reinforcing ribs 20 improves the structural stability of the first annular plate 4 and reduces the deformation of the first annular plate 4 during the force-bearing process; a plurality of second reinforcing ribs 21 are welded on the lower end surface of the second disc 2; the provision of the second reinforcing ribs 21 reduces the deformation of the second disc 2 during the force-bearing process, ensures the structural stability of the second disc 2, and further ensures the hoisting safety of the hoisting steering device.

[0038] Reference Figure 1 and Figure 2 The upper end surface of the first disc 1 is connected with several groups of equiangularly distributed lifting rings 11, and the present application preferably has four groups of lifting rings 11; a group of first steel wire ropes 13 are hung between two adjacent groups of lifting rings 11, and the lifting equipment hangs the two groups of first steel wire ropes 13, and the lifting of the top pipe section 27 is realized through the lifting steering device; several groups of equiangularly distributed lifting rings 11 are fixed on the lower end surface of the second disc 2, and each group of lifting rings 11 is hung and fixed with a hook 12, and several groups of circular rings 28 for lifting are fixed on the upper circumferential side wall of the upper end of the top pipe 27, and a second steel wire rope 14 is connected to the hook 12 and the circular ring 28 on the second disc 2 for pulling.

[0039] Reference Figure 2 and Figure 3 A toothed disc 26 is integrally formed on the lower end surface of the second disc 2, and a first base 8 is fixed on the lower end surface of the second annular plate 5. A first motor 9 is fixed in the first base 8. The present application prefers a servo motor, which is low-speed and stable when in use, thereby ensuring the stability of the rotation process of the second disc 2; the output shaft of the first motor 9 is coaxially connected to the first gear 10, and the first gear 10 meshes and rotates with the toothed disc 26; the first motor 9 drives the toothed disc 26 on the lower end surface of the second disc 2 to rotate, and the toothed disc 26 drives the second disc 2 to rotate in the cylinder 3, thereby adjusting the direction of the top pipe section 27 to achieve that the top pipe section 27 is directly opposite to the extension direction of the top pipe.

[0040] Reference Figure 2 and Figure 3 A second base 17 is fixed to the lower end surface of the second annular plate 5, and a second motor 18 is fixed in the second base 17. The second motor 18 and the first motor 9 are symmetrically distributed along the center of the second disc 2; the second motor 18 acts as a counterweight. At the same time, the setting of the second motor 18 provides a second power source for the hoisting steering device. The first motor 9 and the second motor 18 synchronously drive the gear plate 26 to rotate, thereby ensuring the stability of the rotation of the second disc 2.

[0041] Reference Figure 4 The lower end face of the second disc 2 is integrally formed with a limiting ring 15 arranged along the circumference, and the upper end face of the second annular plate 5 is arranged along the circumference with a groove 16 matching the shape of the limiting ring 15. When the pipe section 27 is being hoisted, the limiting ring 15 rotates in coordination with the groove 16, which reduces the direct contact area between the lower end face of the second disc 2 and the second annular plate 5, and reduces the resistance of the second annular plate 5 to the second disc 2; a grease layer is evenly coated between the limiting ring 15 and the groove 16; the coating of the grease layer reduces the resistance of the second annular plate 5 to the second disc 2, and improves the smoothness of the rotation of the second disc 2 along the second annular plate 5.

[0042] Reference Figure 4The first disc 1 and the second disc 2 are both provided with vertically opposite light holes 22 at the center positions thereof, and limit rods 23 are vertically inserted into the two groups of light holes 22, and a limit block 24 is integrally formed at the upper end of the limit rod 23, and the limit block 24 is clamped on the upper end surface of the first disc 1; the setting of the limit rod 23 realizes the limitation of the center of the second disc 2, reduces the collision between the second disc 2 and the inner circumferential wall of the cylinder 3, and improves the stability of the second annular plate 5 during rotation.

[0043] The implementation principle of a pipe jacking section hoisting and steering device for a municipal engineering in an embodiment of the present application is as follows:

[0044] A cylinder 3 is sleeved on the circumferential outer walls of the first disc 1 and the second disc 2, so that the first disc 1 and the second disc 2 are located in the cylinder 3, and the first disc 1 is located at the upper end of the second disc 2; the limit ring 15 is clamped in the groove 16, and a grease layer is evenly coated in the groove 16; a first annular plate 4 is covered on the upper end surface of the cylinder 3, and the first annular plate 4 and the first disc 1 are fixed by a first bolt 6, and a second bolt 7 is inserted through the first annular plate 4, the cylinder 3 and the second annular plate 5 from top to bottom in sequence, and the fixing nut 25 is tightened at the lower end of the second bolt 7, so that the nut 25 is tightly fixed to the lower end surface of the second annular plate 5.

[0045] The operator vertically inserts the limit rod 23 into the two groups of light holes 22, so that the limit block 24 is clamped on the upper end surface of the first disk 1. The limit rod 23 limits the center of the second disk 2, reduces the collision between the second disk 2 and the inner wall of the cylinder 3, and improves the stability of the second annular plate 5 during rotation.

[0046] The operator fixes the first base 8 and the second base 17 on the lower end surface of the second annular plate 5, respectively, so that the first base 8 and the second base 17 are symmetrically distributed along the center of the second disk 2, and the first motor 9 is clamped and fixed in the first base 8, and the second motor 18 is clamped and fixed in the second base 17, so that the first gear 10 and the second gear 19 are both engaged and rotated with the gear plate 26.

[0047] After the installation of the rotating structure is completed, the operators hang each group of hooks 12 in each group of lifting rings 11, connect the hook 12 located on the upper end surface of the first disc 1 with the lifting equipment through several groups of first steel wire ropes 20, and connect the hook 12 located on the lower end surface of the second disc 2 with the ring 28 through several groups of second steel wire ropes 14 to realize the lifting of the top pipe section 27.

[0048] After the installation of the lifting and steering device is completed, the operator connects the lifting and steering device to the lifting equipment and the jacking pipe section 27, makes sure that there are no obstacles around the jacking pipe section 27, sets up a restricted area within the lifting operation range, places warning signs, and prohibits operators from entering the restricted area; before the formal lifting, a trial lift is carried out to check the stress conditions of all machinery and equipment. If any problems are found, the jacking pipe section 27 should be put back on the ground first, and after the fault is eliminated, a trial lift should be carried out again. Only after confirming that everything is normal can the formal lifting of the jacking pipe section 27 be carried out.

[0049] The jacking pipe section 27 is slowly raised by the lifting equipment, and after the jacking pipe section 27 is stable, it is slowly translated to the position to be lowered; the first motor 9 and the second motor 18 are started, so that the first motor 9 and the second motor 18 synchronously drive the gear plate 26 to rotate, thereby realizing the direction adjustment of the jacking pipe section 27. When the jacking pipe section 27 is directly opposite to the extension direction of the jacking pipe, the jacking pipe section 27 is slowly lowered by the lifting equipment, so that the jacking pipe section 27 is spliced ​​and fixed with the jacking pipe inside the working well, thereby realizing the lifting of the jacking pipe section 27; the present application realizes the direction adjustment of the jacking pipe section 27 during the lifting process, which facilitates the installation of the jacking pipe section 27.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A pipe jacking section hoisting and steering device for municipal engineering, wherein a plurality of groups of rings (28) for hoisting are fixed on the upper circumferential side wall of the upper end of the pipe jacking section (27), characterized in that: The invention comprises a rotating structure and a lifting structure, wherein the rotating structure comprises a first disc (1) and a second disc (2) which are parallelly distributed and horizontally arranged in the upper and lower parts, and a cylinder (3) which is sleeved on the circumferential side walls of the first disc (1) and the second disc (2), wherein the upper end surface of the cylinder (3) is covered with a first annular plate (4), and the lower end surface of the cylinder (3) is integrally formed with a second annular plate (5), the inner diameter of the second annular plate (5) is smaller than the diameter of the second disc (2), a first bolt (6) is inserted and fixed between the first annular plate (4) and the first disc (1), a second bolt (7) is passed through between the first annular plate (4) and the cylinder (3), the lower end of the second bolt (7) is inserted and connected to the second annular plate (5) and is tightened and fixed with a nut (25), and the lower end surface of the second annular plate (5) is provided with a A first base (8) is provided, a first motor (9) is fixedly engaged inside the first base (8), an output shaft of the first motor (9) is coaxially connected to a first gear (10), a toothed disc (26) is integrally formed on the lower end surface of the second disc (2), and the first gear (10) rotates in meshing engagement with the toothed disc (26); the lifting structure comprises a plurality of groups of lifting rings (11) fixed to the upper end surface of the first disc (1) and the lower end surface of the second disc (2) and distributed at equal angles along the circumference, each group of the lifting rings (11) is hung and fixed with a lifting hook (12), a first steel wire rope (13) is connected between the lifting hook (12) on the first disc (1) and the lifting equipment, and a second steel wire rope (14) is connected between the lifting hook (12) on the second disc (2) and the ring (28).

2. The municipal engineering pipe jacking section hoisting and steering device according to claim 1 is characterized in that: The lower end surface of the second disc (2) is provided with an integrally formed limiting ring (15) along the circumference, and the upper end surface of the second annular plate (5) is provided with a groove (16) along the circumference that matches the shape of the limiting ring (15), and the limiting ring (15) rotates in coordination with the groove (16).

3. The municipal engineering pipe jacking section hoisting and steering device according to claim 1, characterized in that: A second base (17) is fixed to the lower end surface of the second annular plate (5), a second motor (18) is fixedly engaged inside the second base (17), the second motor (18) and the first motor (9) are symmetrically distributed along the center of the second disc (2), the output shaft of the second motor (18) is coaxially connected to a second gear (19), and the second gear (19) is meshed and rotated with the toothed disc (26).

4. The municipal engineering pipe jacking section hoisting and steering device according to claim 1, characterized in that: The distance between the lower end surface of the first annular plate (4) and the upper end surface of the second annular plate (5) is greater than the sum of the thicknesses of the first circular disk (1) and the second circular disk (2).

5. The municipal engineering pipe jacking section hoisting and steering device according to claim 1, characterized in that: A plurality of groups of first reinforcing ribs (20) are tension-mounted on the inner circumferential side wall of the first annular plate (4).

6. The municipal engineering pipe jacking section hoisting and steering device according to claim 1, characterized in that: A plurality of groups of second reinforcing ribs (21) are fixedly mounted on the lower end surface of the second disc (2), and each group of the second reinforcing ribs (21) is mounted on the inner side of the toothed disc (26).

7. The municipal engineering pipe jacking section hoisting and steering device according to claim 4, characterized in that: The first disk (1) and the second disk (2) are both provided with vertically opposite light holes (22) at the center positions of the circles, and limit rods (23) are vertically inserted through the two groups of light holes (22), and the upper ends of the limit rods (23) are integrally formed with limit blocks (24), and the limit blocks (24) are clamped on the upper end surface of the first disk (1).

8. The municipal engineering pipe jacking section hoisting and steering device according to claim 2, characterized in that: A uniformly distributed lubricating grease layer is coated between the limiting ring (15) and the groove (16).

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