Grouting device for pipe jacking construction

Abstract

The invention relates to the technical field of pipe jacking construction equipment, and discloses a grouting device for pipe jacking construction, which comprises a pipe jacking body, a grouting mechanism is arranged in the pipe jacking body, the grouting mechanism comprises a grouting ring body arranged in the pipe jacking body, one end of the grouting ring body is communicated with a first grouting pipe, and the other end of the grouting ring body is communicated with a second grouting pipe. One end of the grouting ring body is communicated with the first grouting pipe through a second grouting pipe, the periphery of the grouting ring body is further communicated with a guide pipe, a rotating ring body is slidably installed on the inner wall of the grouting ring body, a plurality of arc-shaped fins are fixedly installed on the periphery of the rotating ring body at equal intervals, and in the grouting process, the arc-shaped fins are evenly distributed on the periphery of the rotating ring body. When the grouting ring body rotates, the grouting ring body can abut against the arc-shaped fins and drive the arc-shaped fins and the rotating ring body to rotate in the grouting ring body, grout in the grouting ring body is guided, the grout is evenly distributed in all areas in the grouting ring body, and the situation that hollowing occurs due to uneven grouting of the grout is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of pipe jacking construction equipment, in particular to a grouting device for pipe jacking construction. Background Art

[0002] As a trenchless construction method, pipe jacking construction has the following main working principle: first dig two foundation pits at a certain distance on the ground, namely the pipe jacking launch well and the receiving well; then use the jacking force generated by the jacking equipment in the launch well to overcome the friction between the pipe and the surrounding soil and bury the pipe between the two wells. At present, the pipe jacking construction of municipal sewage pipes often uses reinforced concrete pipes with a diameter of 1350, and grouting is used to reinforce it between the entrance and exit of the working well.

[0003] For example, a grouting device for pipe jacking construction with announcement number CN219509645U comprises a mounting pipe and an inner liner pipe sleeved on the mounting pipe, an elastic pleated air cushion ring is arranged between the mounting pipe and the inner liner pipe, the inner ring surface of the elastic pleated air cushion ring is fixedly sleeved on the outer pipe wall of the mounting pipe, and the outer ring surface of the elastic pleated air cushion ring is fixedly engaged with the inner pipe wall of the inner liner pipe; the inner liner pipe is composed of a plurality of inner liner arc plates, each of which has an mounting cavity on its outer wall, and a grouting pipe is fixedly engaged in the mounting cavity, and a grouting hole is arranged on the pipe wall of the grouting pipe. Compared with the traditional one-time grouting method, the grouting device for pipe jacking construction avoids the problems of slow solidification speed and many voids in the mud due to excessive grouting in the gap between the pipe jacking and the working well at the opening of the cave.

[0004] During the use of traditional grouting equipment for pipe jacking construction, the grouting pipes are distributed in a ring shape during the grouting process. The end far away from the grouting inlet will not be able to discharge slurry due to insufficient pressure. In addition, since the grouting outlets are distributed at equal intervals, there will be excess slurry at the grouting outlets, while hollowing will occur far away from the grouting outlets. The slurry is unevenly distributed on the outer periphery of the pipe jacking, which can easily affect the lubrication and subsequent reinforcement of the pipe jacking, resulting in poor use effect.

[0005] Therefore, we propose a grouting device for pipe jacking construction to solve the above-mentioned problems. Summary of the invention

[0006] The purpose of the present invention is to provide a grouting device for pipe jacking construction to solve the problem that the slurry is unevenly distributed on the outer periphery of the pipe jacking, which easily affects the lubrication and subsequent reinforcement of the pipe jacking and results in poor use effect.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solutions: a grouting device for pipe jacking construction, comprising a pipe jacking body, a grouting mechanism is arranged inside the pipe jacking body, the grouting mechanism comprises a grouting ring body arranged inside the pipe jacking body, one end of the grouting ring body is connected with a first grouting pipe, one end of the grouting ring body is connected with the first grouting pipe through a second grouting pipe, the outer periphery of the grouting ring body is also connected with a guide pipe, a spiral groove is provided on the inner wall of the guide pipe, a rotating ring body is slidably mounted on the inner wall of the grouting ring body, and a plurality of equally spaced arc-shaped fins are fixedly mounted on the outer periphery of the rotating ring body;

[0008] A guide mechanism is arranged inside the grouting mechanism, and the guide mechanism includes an inner pipe fitting slidably installed inside the guide tube, the upper end of the inner pipe fitting is connected to a bent pipe fitting, one end of the bent pipe fitting is installed with a nozzle, the lower end of the inner pipe fitting is arranged with a hemisphere, and the lower end of the inner pipe fitting and the lower end of the hemisphere are both provided with feed holes.

[0009] Preferably, a sliding block is fixedly mounted on the outer periphery of the inner tube, and the sliding block is slidably mounted in the spiral groove.

[0010] Preferably, a grouting mechanism is further provided inside the jacking pipe body, and the grouting mechanism also includes a grouting ring body, and the grouting ring body is arranged between the grouting ring body and the jacking pipe body, and an avoidance hole is opened on the grouting ring body, and the avoidance hole is interlaced and connected with the guide pipe.

[0011] Preferably, a grouting pipe is installed on the outer periphery of the grouting ring body, and a plurality of grouting pipes are provided. The plurality of grouting pipes are equidistantly arranged on the outer periphery of the grouting ring body. The grouting ring body and the grouting ring body are commonly connected by a connecting pipe, and a rotating sphere is arranged inside the grouting pipe.

[0012] Preferably, the nozzle is rotatably connected to the bent pipe fitting, a groove is provided on the nozzle, a discharge hole is provided on the groove wall of the groove, a collecting hole is provided on the bent pipe fitting, and the collecting hole is arranged at a position of the bent pipe fitting close to the top pipe body.

[0013] Preferably, a protrusion is provided on the inner wall of the inner tube, a one-way sphere is provided at the upper end of the protrusion, and the one-way sphere is provided at the lower end of the collecting hole.

[0014] Preferably, a material mixing mechanism is arranged outside the guide mechanism, and the material mixing mechanism comprises a bellows, the inner wall of the upper end of the bellows is fixedly connected to the inner pipe fitting, the lower end of the bellows is in conflict with the top pipe body, the upper end of the bellows is connected to the collecting hole, and side holes are opened on both sides of the bellows.

[0015] Preferably, a reciprocating mechanism is also provided outside the guide mechanism, and the reciprocating mechanism includes a fixed ring body fixedly installed on the outer periphery of the inner pipe, and a first elastic member is commonly installed between the fixed ring body and the top wall of the grouting ring body, and the first elastic member is arranged on the outer periphery of the inner pipe.

[0016] Preferably, a protective mechanism is provided on the periphery of the grouting mechanism, and the protective mechanism comprises clamping blocks fixedly mounted on both sides of the upper end of the guide tube, and an arc-shaped baffle at the upper end of one of the clamping blocks.

[0017] Preferably, the arc-shaped baffle is also located at the upper end of the bent tube, a second elastic member is installed between the arc-shaped baffle and the nozzle, and a scraper is fixedly installed at the upper end of another clamping block.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. During the injection process, the slurry will hit the arc-shaped fins, and drive the arc-shaped fins and the rotating ring to rotate inside the grouting ring, guiding the slurry inside the grouting ring so that the slurry is distributed in various areas inside the grouting ring, which is convenient for the slurry to flow out evenly from the guide pipe, reducing the occurrence of hollowing due to uneven injection of the slurry. During the advancement of the jacking pipe body, the slurry can flow out from the nozzle and flow to the advancement path of the rear end jacking pipe body, so that the slurry is injected in a concentrated manner, which improves the utilization rate and filling rate of the slurry and facilitates overcoming the friction between the jacking pipe body and the surrounding soil.

[0020] 2. With the advancement of the jacking pipe body and the injection of slurry, the rotating ring rotates in the grouting ring, and the hemisphere and inner pipe fittings move up and down reciprocatingly in the grouting ring. Therefore, the mud sprayed from the nozzle is distributed in a wave shape. With the self-leveling of the mud, it can be ensured that the slurry can be completely injected into the filling layer between the jacking pipe body and the soil, further reducing the occurrence of hollowing. The inner pipe fittings, bent pipe fittings, and nozzles will also rotate left and right during the up and down movement. The spraying range of the nozzle is greatly increased, which is convenient for filling the gaps in adjacent nozzles, further increasing the uniformity of slurry injection and achieving good use effect.

[0021] 3. Excess slurry flows into the collecting hole along the bent pipe and into the corrugated pipe. The inside of the corrugated pipe is a cavity, which expands and contracts due to the up and down movement of the inner pipe. During the expansion and contraction process, excess slurry is sucked into the inside along the collecting hole and sprayed out from the side holes. The side holes are located on both sides of the corrugated pipe and at the front end of the nozzle. The spraying range is located at the front end of the nozzle spraying. A thin slurry layer is sprayed on the outer periphery of the top pipe body in advance to form the first slurry layer. The grouting space can be controlled in advance. The second layer of slurry sprayed by the subsequent nozzle is located at the outer end of the first layer of slurry. The device adopts a multi-layer layout for grouting, which can not only reduce the hollowing of the grouting layer, but also reuse the excess slurry for use, with a high utilization rate and reduced slurry waste.

[0022] 4. When the inner pipe moves upward along the outer circumference of the arc-shaped fin, the fixed ring body squeezes the first elastic member and moves upward synchronously. When the inner pipe falls off the arc-shaped fin, the fixed ring body and the first elastic member lose pressure, and the reaction force of the first elastic member also drives the fixed ring body and the inner pipe to reset, providing a certain driving force for the downward movement of the inner pipe, ensuring that the inner pipe can always reciprocate during the grouting process of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0024] Figure 2 It is an overall cross-sectional view of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the grouting mechanism of the present invention;

[0026] Figure 4 It is a schematic diagram of the structure of the rotating ring body of the present invention;

[0027] Figure 5 For the present invention Figure 2 Enlarged view of point A in the middle;

[0028] Figure 6 It is a schematic diagram of the structure of the guide mechanism of the present invention;

[0029] Figure 7 It is a cross-sectional view of the grouting mechanism of the present invention;

[0030] Figure 8 It is a schematic diagram of the structure of the grouting mechanism of the present invention;

[0031] Fig. 9 It is a schematic diagram of the protection mechanism structure of the present invention.

[0032] In the figure: 1, jacking pipe body; 2, grouting mechanism; 21, grouting ring; 22, first grouting pipe; 23, second grouting pipe; 24, guide pipe; 25, spiral groove; 26, rotating ring; 27, arc fin; 3, grouting mechanism; 31, grouting ring; 32, avoidance hole; 33, grouting pipeline; 34, connecting pipeline; 35, rotating ball; 4, guide mechanism; 41, inner pipe; 411, bump; 41 2. One-way sphere; 42. Bend pipe; 43. Nozzle; 44. Groove; 45. Discharge hole; 46. Hemisphere; 47. Feed hole; 48. Collecting hole; 49. Slider; 5. Protective mechanism; 51. Snap-in block; 52. Arc baffle; 53. Second elastic member; 54. Scraper; 6. Material leveling mechanism; 61. Bellows; 62. Side hole; 7. Reciprocating mechanism; 71. Fixed ring; 72. First elastic member. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example 1: Please refer to Figure 1-Figure 7 A grouting device for pipe jacking construction comprises a pipe jacking body 1, a grouting mechanism 2 is arranged inside the pipe jacking body 1, the grouting mechanism 2 comprises a grouting ring 21 arranged inside the pipe jacking body 1, one end of the grouting ring 21 is connected with a first grouting pipe 22, one end of the grouting ring 21 is connected with the first grouting pipe 22 through a second grouting pipe 23, slurry for filling lubrication is respectively injected into the grouting ring 21 through the first grouting pipe 22 and the second grouting pipe 23, so that the uniformity of the slurry in the grouting ring 21 is ensured, and the outer periphery of the grouting ring 21 is also connected with a guide pipe 24, the guide pipe 24 is connected with the side wall of the pipe jacking body 1 through an interlacing connection, and the slurry can be injected into the pipe jacking body from the guide pipe 24 The outer periphery of the body 1 and the inner wall of the grouting ring body 21 are slidably mounted with a rotating ring body 26, and the outer periphery of the rotating ring body 26 is fixedly mounted with a plurality of equally spaced arc-shaped fins 27, and the grouting ring body 21 is provided with two slurry injection ports, and the two slurry injection ports are both connected to the arc-shaped fins 27. Therefore, during the injection process, the slurry will hit the arc-shaped fins 27, and drive the arc-shaped fins 27 and the rotating ring body 26 to rotate inside the grouting ring body 21, and guide the slurry inside the grouting ring body 21, so that the slurry is distributed in various areas inside the grouting ring body 21, so that the slurry can flow out of the guide tube 24 evenly, and the occurrence of hollowing due to uneven injection of the slurry is reduced.

[0035] A guide mechanism 4 is provided inside the grouting mechanism 2, and the guide mechanism 4 includes an inner pipe fitting 41 slidably installed inside the guide tube 24, and the upper end of the inner pipe fitting 41 is connected to and installed with a bent pipe fitting 42, and one end of the bent pipe fitting 42 is installed with a nozzle 43, and the lower end of the inner pipe fitting 41 is provided with a hemispherical body 46, and the lower end of the inner pipe fitting 41 and the lower end of the hemispherical body 46 are both provided with a feed hole 47, and the feed hole 47 is also connected with the grouting ring body 21, and the slurry entering the grouting ring body 21 can flow into the inner pipe fitting 41 through the feed hole 47, and the bending direction of the bent pipe fitting 42 is opposite to the advancing direction of the top pipe body 1, which ensures that during the advancement of the top pipe body 1, the slurry can flow out from the nozzle 43 and flow to the advancement path of the rear end top pipe body 1, so that the slurry is injected centrally, thereby improving the utilization rate and filling rate of the slurry, and facilitating overcoming the friction between the top pipe body 1 and the surrounding soil.

[0036] A hemispherical body 46 is provided at the lower end of the inner pipe fitting 41, and the hemispherical body 46 is located on the arc-shaped fin 27. When the rotating ring body 26 and the arc-shaped fin 27 rotate, the hemispherical body 46 and the inner pipe fitting 41 rise along the curvature of the arc-shaped fin 27. When they slide to the highest point of the arc-shaped fin 27, the diameter of the slurry injected by the multiple nozzles 43 is the largest, which is convenient for ensuring that the outermost end of the top pipe body 1 connected to the soil can be completely filled. When it falls from the arc-shaped fin 27, the diameter of the slurry injected by the multiple nozzles 43 is the smallest, which is convenient for ensuring that the innermost end of the top pipe body 1 connected to the soil can be completely filled, and the filling is relatively uniform.

[0037] As the jacking pipe body 1 is advanced and the slurry is injected, the rotating ring body 26 rotates in the grouting ring body 21, and the hemispherical body 46 and the inner pipe 41 reciprocate up and down in the grouting ring body 21. Therefore, the mud sprayed from the nozzle 43 is distributed in a wave shape. As the mud self-levels, it can be ensured that the slurry can be completely injected into the filling layer between the jacking pipe body 1 and the soil, further reducing the occurrence of hollowing.

[0038] Example 2: Please refer to Figure 2-Figure 7 A spiral groove 25 is provided on the inner wall of the guide tube 24, and a slider 49 is fixedly installed on the outer periphery of the inner tube 41. The slider 49 is slidably installed in the spiral groove 25, and the position of the guide tube 24 remains unchanged. When the inner tube 41 moves upward in the guide tube 24, the slider 49 moves in the spiral groove 25, and the inner tube 41 adapts to the curvature of the spiral groove 25 and rotates. When the inner tube 41 moves downward in the guide tube 24, the inner tube 41 rotates in the opposite direction. Therefore, the inner tube 41, the bent tube 42, and the nozzle 43 will also rotate left and right during the up and down movement. The spraying range of the nozzle 43 is greatly increased, which is convenient for filling the gap in the adjacent nozzles 43, further increasing the uniformity of the slurry injection, and having a good use effect.

[0039] Example 3: Please refer to Figure 2-Figure 7The nozzle 43 is rotatably connected to the bent pipe fitting 42, a groove 44 is provided on the nozzle 43, a discharge hole 45 is provided on the groove wall of the groove 44, the nozzle 43 swings left and right along with the bent pipe fitting 42, the nozzle 43 swings left and right together, the slurry is sprayed out from the discharge hole 45 to fill the outer periphery of the top pipe body 1, a collecting hole 48 is provided on the bent pipe fitting 42, the collecting hole 48 is arranged at a position where the bent pipe fitting 42 is close to the top pipe body 1, when the nozzle 43 is moving, the slurry in the overlapping part of the movement trajectory of the nozzle 43 will flow reversely to the collecting hole 48 in the nozzle 43 for collection due to excessive amount.

[0040] The guide mechanism 4 is provided with a material sparging mechanism 6 outside. The material sparging mechanism 6 includes a bellows 61. The inner wall of the upper end of the bellows 61 is fixedly connected to the inner pipe 41. The lower end of the bellows 61 is in conflict with the top pipe body 1. The upper end of the bellows 61 is connected to the collecting hole 48. Side holes 62 are provided on both sides of the bellows 61. Excess slurry flows into the collecting hole 48 along the bent pipe 42 and flows into the bellows 61. The bellows 61 is hollow and expands and contracts through the up and down movement of the inner pipe 41. During the expansion and contraction process, the excess slurry is sucked along the collecting hole 48. The slurry flows into the interior and is sprayed out from the side holes 62. The side holes 62 are located on both sides of the bellows 61 and at the front end of the nozzle 43. The spraying range is located at the front end of the nozzle 43. A thin slurry layer is sprayed on the periphery of the top pipe body 1 in advance to form a first slurry layer. The grouting space can be controlled in advance. The second layer of slurry sprayed by the subsequent nozzle 43 is located at the outer end of the first layer of slurry. The device adopts a multi-layer layout for grouting, which can not only reduce the hollowing of the grouting layer, but also reuse the excess slurry for use, with a high utilization rate and reduced slurry waste.

[0041] Example 4: Please refer to Figure 5-Figure 7 and Fig. 9 A protrusion 411 is provided on the inner wall of the inner tube 41. The protrusion 411 is an annular structure with a hole in the middle. The upper end of the protrusion 411 is fixedly connected to the one-way ball 412 through a spring. In the process of the one-way ball 412 blocking the slurry from flowing outward, its pressure is applied to the one-way ball 412 outward. The one-way ball 412 stretches the spring, and the hole in the middle of the protrusion 411 flows, and the liquid can flow. When the slurry no longer flows outward, the one-way ball 412 is reset to block the hole in the protrusion 411, so that the inner tube 41 forms a one-way flow state, preventing the slurry from completely entering the inner tube 41. The one-way ball 412 is arranged at the lower end of the collecting hole 48, which does not affect the collecting function of the collecting hole 48.

[0042] A reciprocating mechanism 7 is also provided outside the guide mechanism 4. The reciprocating mechanism 7 includes a fixed ring body 71 fixedly installed on the outer periphery of the inner pipe member 41. A first elastic member 72 is installed between the fixed ring body 71 and the top wall of the grouting ring body 21. The first elastic member 72 is provided on the outer periphery of the inner pipe member 41.

[0043] When the inner tube 41 moves upward along the outer circumference of the arc-shaped fin 27, the fixed ring body 71 squeezes the first elastic member 72 to move upward synchronously. When the inner tube 41 falls off the arc-shaped fin 27, the fixed ring body 71 and the first elastic member 72 lose pressure, and the reaction force of the first elastic member 72 also drives the fixed ring body 71 and the inner tube 41 to reset, providing a certain driving force for the inner tube 41 to move downward, ensuring that the inner tube 41 can always reciprocate during the grouting process of the device.

[0044] Example 4: Please refer to Figure 5-Figure 9 A protective mechanism 5 is provided on the periphery of the grouting mechanism 2. The protective mechanism 5 includes clamping blocks 51 fixedly installed on both sides of the upper end of the guide pipe 24. By setting the clamping blocks 51, the connectivity between the grouting mechanism 2 and the top pipe body 1 is ensured. An arc-shaped baffle 52 is provided at the upper end of one of the clamping blocks 51. The arc-shaped baffle 52 is also located at the upper end of the bent pipe fitting 42, which can support the soil and provide activity space for the inner pipe fitting 41 and the bent pipe fitting 42. The clamping blocks 51 and the arc-shaped baffle 52 can also play the function of breaking the soil, providing space for the nozzle 43 to spray mud, protecting the nozzle 43, and reducing the possibility of the nozzle 43 being blocked by the soil.

[0045] A second elastic member 53 is installed between the arc baffle 52 and the nozzle 43. The arc baffle 52 has a certain elasticity and supporting force under the action of the second elastic member 53. When hard soil or stones appear at the front end of the top pipe body 1, the arc baffle 52 has a higher protective effect on the nozzle 43.

[0046] A scraper 54 is fixedly installed on the upper end of another clamping block 51. The mud sprayed from the nozzle 43 is sprayed on the scraper 54. As the top pipe body 1 is pushed, the position of the scraper 54 remains stationary. The mud is sprayed in a wave shape by the moving nozzle 43. The scraper 54 can scrape the bottom of the mud flat, ensuring that the mud thickness is uniform and reducing the occurrence of hollowing.

[0047] A grouting mechanism 3 is also provided inside the top pipe body 1, and the grouting mechanism 3 also includes a grouting ring 31. The grouting ring 31 is arranged between the grouting ring 21 and the top pipe body 1. The grouting ring 31 is an air bag structure with a ring-shaped flexible structure, which is used to fill the gap between the outer periphery of the grouting ring 21 and the inner wall of the top pipe body 1, thereby ensuring the stability of the grouting ring 21. An avoidance hole 32 is opened on the grouting ring 31, and the avoidance hole 32 is interlaced and connected with the guide pipe 24 for the placement of the guide pipe 24.

[0048] The outer periphery of the grouting ring body 31 is also connected to a grouting pipe 33, and multiple groups of grouting pipes 33 are arranged at an equal distance on the outer periphery of the grouting ring body 31. A rotating ball 35 is arranged inside the grouting pipe 33, and the rotating ball 35 is rotatably arranged on the outer side of the grouting pipe 33. A gap is arranged between the rotating ball 35 and the grouting pipe 33, wherein two grouting pipes 33 are arranged on both sides of the nozzle 43 to absorb excess slurry on the outer periphery of the nozzle 43. The grouting ring body 31 is provided with a plurality of groups of grouting pipes 33, and the plurality of groups of grouting pipes 33 are arranged at an equal distance on the outer periphery of the grouting ring body 31. A rotating ball 35 is arranged inside the grouting pipe 33, and the rotating ball 35 is rotatably arranged on the outer side of the grouting pipe 33. A gap is arranged between the rotating ball 35 and the grouting pipe 33. 1 and the grouting ring body 21 are connected with a connecting pipe 34, and the slurry inside the grouting ring body 21 can be injected into the grouting ring body 31 through the connecting pipe 34. The grouting ring body 31 is an air bag structure, which can be adaptively expanded according to the amount of injected slurry. When the slurry in the grouting space is redundant, the slurry will flow into the grouting pipe 33 through the gap between the rotating balls 35. On the contrary, when the slurry is hollow, the slurry will be injected into the hollow place through the gap between the rotating balls 35 for adaptive grouting.

[0049] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0050] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A grouting device for pipe jacking construction, comprising a pipe jacking body (1), wherein a grouting mechanism (2) is arranged inside the pipe jacking body (1), characterized in that: The grouting mechanism (2) comprises a grouting ring (21) arranged inside the top pipe body (1); one end of the grouting ring (21) is connected to a first grouting pipe (22); one end of the grouting ring (21) is connected to the first grouting pipe (22) through a second grouting pipe (23); the outer periphery of the grouting ring (21) is also connected to a guide pipe (24); a spiral groove (25) is provided on the inner wall of the guide pipe (24); a rotating ring (26) is slidably mounted on the inner wall of the grouting ring (21); a plurality of equally spaced arc-shaped fins (27) are fixedly mounted on the outer periphery of the rotating ring (26); A guide mechanism (4) is provided inside the grouting mechanism (2), and the guide mechanism (4) comprises an inner pipe member (41) slidably mounted inside the guide tube (24), the upper end of the inner pipe member (41) is connected to a bent pipe member (42), one end of the bent pipe member (42) is mounted with a nozzle (43), the lower end of the inner pipe member (41) is provided with a hemispherical body (46), and the lower ends of the inner pipe member (41) and the hemispherical body (46) are both provided with a feed hole (47).

2. A grouting device for pipe jacking construction according to claim 1, characterized in that: A sliding block (49) is fixedly mounted on the outer periphery of the inner tube (41), and the sliding block (49) is slidably mounted in the spiral groove (25).

3. A grouting device for pipe jacking construction according to claim 1, characterized in that: A grouting mechanism (3) is also provided inside the jacking pipe body (1), and the grouting mechanism (3) also includes a grouting ring body (31). The grouting ring body (31) is provided between the grouting ring body (21) and the jacking pipe body (1), and an avoidance hole (32) is provided on the grouting ring body (31), and the avoidance hole (32) is connected to the guide pipe (24) through an insertion.

4. A grouting device for pipe jacking construction according to claim 3, characterized in that: The outer periphery of the grouting ring body (31) is also connected to a grouting pipe (33), and the grouting pipe (33) is provided with multiple groups. The multiple groups of grouting pipes (33) are equidistantly arranged on the outer periphery of the grouting ring body (31). The grouting ring body (31) and the grouting ring body (21) are commonly connected by a connecting pipe (34), and a rotating ball (35) is arranged inside the grouting pipe (33).

5. A grouting device for pipe jacking construction according to claim 1, characterized in that: The nozzle (43) is rotatably connected to the bent pipe (42); a groove (44) is provided on the nozzle (43); a discharge hole (45) is provided on the groove wall of the groove (44); a collecting hole (48) is provided on the bent pipe (42); and the collecting hole (48) is arranged at a position of the bent pipe (42) close to the top pipe body (1).

6. A grouting device for pipe jacking construction according to claim 5, characterized in that: A protrusion (411) is provided on the inner wall of the inner tube (41), a one-way sphere (412) is provided at the upper end of the protrusion (411), and the one-way sphere (412) is provided at the lower end of the collecting hole (48).

7. A grouting device for pipe jacking construction according to claim 6, characterized in that: A material sparging mechanism (6) is arranged outside the guide mechanism (4), and the material sparging mechanism (6) comprises a bellows (61). The inner wall of the upper end of the bellows (61) is fixedly connected to the inner pipe member (41), the lower end of the bellows (61) is in contact with the top pipe body (1), the upper end of the bellows (61) is connected to the collecting hole (48), and side holes (62) are provided on both sides of the bellows (61).

8. A grouting device for pipe jacking construction according to claim 1, characterized in that: A reciprocating mechanism (7) is also provided outside the guide mechanism (4), and the reciprocating mechanism (7) comprises a fixed ring body (71) fixedly mounted on the outer periphery of the inner tube member (41), and a first elastic member (72) is installed between the fixed ring body (71) and the top wall of the grouting ring body (21), and the first elastic member (72) is arranged on the outer periphery of the inner tube member (41).

9. A grouting device for pipe jacking construction according to claim 1, characterized in that: A protective mechanism (5) is provided on the outer periphery of the grouting mechanism (2), and the protective mechanism (5) comprises clamping blocks (51) fixedly mounted on both sides of the upper end of the guide tube (24), and an arc-shaped baffle (52) at the upper end of one of the clamping blocks (51).

10. A grouting device for pipe jacking construction according to claim 9, characterized in that: The arc-shaped baffle (52) is also located at the upper end of the bent tube (42), a second elastic member (53) is installed between the arc-shaped baffle (52) and the nozzle (43), and a scraper (54) is fixedly installed at the upper end of another clamping block (51).

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