Construction device of high pressure jet grouting pile in thick soft soil

Abstract

The present invention provides a construction device for high-pressure rotary jet piles in deep soft soil layers, including a support pipe, a moving platform and a lifting track. The support pipe is installed on the transfer platform, and the moving platform can be raised and lowered by the lifting track. The lifting pipe is fixedly arranged on the support seat. The support pipe is rotatably connected to the rotating pipe inside. The lower end of the rotating pipe is installed with a protective component. A grouting component is arranged inside the protective component, and one end of the grouting component passes through the rotating pipe. A clamping component is arranged inside the rotating pipe, and the clamping component is used to clamp and position the grouting pipe inside the rotating pipe. The connection between the protective pipe and the sliding plug described in the invention forms a protective closed pipe, which realizes the surrounding protection of the grouting pipe. During the drilling process, the area of ​​direct contact between the grouting pipe and the soil layer is reduced, which is beneficial to reduce the friction loss of the grouting pipe during the drilling process. In addition, during the grouting process, the protective pipe can support and maintain the drilled hole.

Description

Technical Field

[0001] The invention belongs to the field of construction devices for high-pressure rotary jet grouting piles in thick soft soil layers, and in particular relates to a construction device for high-pressure rotary jet grouting piles in thick soft soil layers. Background Art

[0002] The main foundation of the sluice gate of this project is treated with cement mixing piles, high-pressure jet grouting piles, precast concrete pipe piles, precast concrete support piles and other pile types. High-pressure jet grouting piles are a foundation reinforcement technology. Its core feature is that it uses a high-pressure rotating nozzle to spray cement slurry or other chemical slurry into the soil layer, which mixes with the soil to form a continuous overlapping cement reinforcement body or columnar consolidation body.

[0003] High-pressure rotary jet piles include a grouting pipe and a lifting assembly. During the jetting process, the grouting pipe is gradually lifted upward while rotating, so that the slurry and the soil can be fully mixed. However, during the drilling and jetting process, the grouting pipe will produce friction with the soil layer, and the lack of protection for the grouting pipe is not conducive to extending the service life of the grouting pipe. Summary of the invention

[0004] In view of this, the present invention aims to propose a construction device for high-pressure rotary jet piles in deep soft soil strata, so as to solve the problem that the grouting pipe will produce friction with the soil layer during the drilling and jetting process, lack of protection for the grouting pipe, and is not conducive to extending the service life of the grouting pipe.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A construction device for high-pressure rotary grouting piles in deep soft soil layers comprises a support pipe, a moving platform and a lifting track, wherein the support pipe is mounted on the transfer platform, and the moving platform can be raised and lowered by the lifting track, the lifting pipeline is fixedly arranged on the support seat, the support pipe is rotatably connected to a rotating pipe inside, a protective component is installed at the lower end of the rotating pipe, a grouting component is arranged inside the protective component, and one end of the grouting component passes through the rotating pipe, a clamping component is arranged inside the rotating pipe, and the clamping component is used to clamp and position the grouting pipe inside the rotating pipe.

[0007] Furthermore, the protection assembly includes a protection tube, an externally threaded tube and an internally threaded tube, the externally threaded tube and the internally threaded tube are respectively fixedly connected at both ends of the protection tube, and a threaded sleeve is provided at the lower end of the rotating tube, and the externally threaded tube is threadedly connected in the threaded sleeve;

[0008] Furthermore, the grouting assembly includes a grouting pipe and a sliding plug. The grouting pipe is inserted into the protective pipe. The sliding plug is fixedly sleeved on the surface of the grouting pipe and is in sliding contact with the inner wall of the protective pipe. The grouting hole is opened at the bottom end of the side wall of the grouting pipe.

[0009] Furthermore, the clamping assembly includes two electric cylinders, and the two electric cylinders are symmetrically fixed on the inner wall of the rotating tube. A clamping seat is fixedly installed on the output end of each electric cylinder. Multiple clamping wheels are arranged on each clamping seat, and the multiple clamping wheels are arranged parallel to each other. The periphery of each clamping wheel is provided with an annular limiting groove, and the outer wall of the grouting pipe is axially provided with a limiting ridge, and the periphery of the limiting ridge is connected to the annular limiting groove.

[0010] Furthermore, a locking assembly is arranged on each clamp seat, and the locking assembly includes a movable plate, an installation cavity is provided on the clamp seat, and one side of the movable plate is slidably connected to the side wall of the installation cavity, and the other side of the movable plate is rotatably connected to the clamping wheel, and the outer periphery of the clamping wheel can abut against the bottom of the installation cavity, and a plug-in rod is arranged at the bottom of the movable plate, and the plug-in rod is inserted through the clamp seat, and a support spring is arranged at the outer periphery of the plug-in rod, and the two ends of the support spring are respectively fixedly connected to the inner wall of the installation cavity of the movable plate and the clamp seat.

[0011] Furthermore, a limiting friction plate is installed at the bottom of the installation cavity, and when the clamping wheel is in a state of clamping the limiting edge, the limiting friction plate is in contact with the surface of the clamping wheel.

[0012] Furthermore, a snap-in assembly is arranged between the sliding plug and the protective tube, the snap-in assembly includes a plurality of snap-in pins, and the plurality of snap-in pins are arranged circumferentially along the periphery of the sliding plug, a plurality of mounting grooves are arranged on the periphery of the sliding plug, each snap-in pin corresponds to a mounting groove, and a reset spring is arranged in each mounting groove, the snap-in pin includes a first mounting section and a snap-in section, a snap-in groove is arranged on the internal threaded tube, the first mounting section is inserted in the mounting groove, the snap-in section is inserted in the mounting groove in the snap-in groove, and both ends of the reset spring are fixedly connected to the inner wall of the mounting groove and the first mounting section respectively.

[0013] Furthermore, a flip adjustment assembly is arranged between the transfer platform and the support tube, and the flip adjustment assembly includes a rotating shaft, a follower gear and a cylinder. One end of the rotating shaft is rotatably connected to the surface of the transfer platform, and the other end is fixedly connected to the support tube. The follower gear is fixedly sleeved on the surface of the rotating shaft, the cylinder is fixedly installed on the surface of the transfer platform, and the end of the piston rod is fixedly connected to a driving rack, which is slidably inserted on the surface of the transfer platform and meshes with the follower gear.

[0014] Furthermore, a driving assembly for driving the rotating tube to rotate is provided on the support tube, and the driving assembly includes a first motor and a follower gear ring. The first motor is fixedly mounted on the surface of the support tube, and the output end is fixedly connected to a driving gear. The follower gear ring is fixedly sleeved on the surface of the rotating tube and meshes with the driving gear.

[0015] Furthermore, a first synchronous belt is provided on the side of the lifting track, and the surface of the first synchronous belt is fixedly connected to the surface of the transfer platform. Two synchronous gears are connected to the transmission inside the first synchronous belt, and the two synchronous gears are rotatably connected to the surface of the lifting track, and a rotating drive assembly is provided at one of the synchronous gears.

[0016] Furthermore, the rotary drive assembly includes a second motor and a follower wheel. The second motor is fixedly mounted on the surface of the lifting track, and the output end is fixedly connected to the driving wheel. The follower wheel is fixedly connected to the surface of the synchronous gear at the corresponding position, and is coaxially arranged with the synchronous gear at the corresponding position. A second synchronous belt is transmission-connected between the follower wheel and the driving wheel.

[0017] Compared with the prior art, the construction device of high-pressure jet grouting piles in deep soft soil layer of the present invention has the following beneficial effects:

[0018] The connection between the protective pipe and the sliding plug described in the present invention forms a protective closed pipe, which realizes the surrounding protection of the grouting pipe. During the drilling process, the area of ​​direct contact between the grouting pipe and the soil layer is reduced, which is beneficial to reducing the friction loss of the grouting pipe during the drilling process. In addition, during the grouting process, the protective pipe can support and maintain the drilled hole.

[0019] In the clamping process of the present invention, the electric cylinder pushes the clamping seat to move, and the clamping seat drives the clamping wheel to clamp the limiting edge. The movable plate compresses the elastic support member until the clamping wheel and the limiting friction plate are tightly pressed. Under the action of the limiting friction plate, the clamping wheel is locked to limit the rotation of the clamping wheel, so that the clamping wheel can clamp and limit the limiting edge, and at the same time, the limiting edge and the grouting pipe are clamped and positioned as a whole, so that the grouting pipe and the rotating pipe form a whole.

[0020] Under the docking and limiting action of the annular limiting groove and the limiting edge of the clamping wheel, the locking pin on the surface of the sliding plug faces the locking groove and pushes the grouting pipe so that the locking pin docks with the upper locking groove to form a locking connection. The grouting pipe is then clamped and positioned by the clamping assembly. While the grouting pipe is clamped and positioned, the overall connection between the protective pipe, the rotating pipe and the grouting pipe is locked to prevent relative rotation between the protective pipe, the rotating pipe and the grouting pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 It is a schematic diagram of the overall structure of a construction device for high-pressure jet grouting piles in deep soft soil according to an embodiment of the present invention;

[0023] Figure 2 for Figure 1 Enlarged view of part A;

[0024] Figure 3 for Figure 1 Enlarged view of part B;

[0025] Figure 4 A structural cross-sectional view of a protective pipe of a construction device for high-pressure jet grouting piles in deep soft soil according to an embodiment of the present invention;

[0026] Figure 5 for Figure 4 Enlarged view of part C in the middle;

[0027] Figure 6 A first structural schematic diagram of a transfer platform of a construction device for high-pressure jet grouting piles in thick soft soil according to an embodiment of the present invention;

[0028] Figure 7 A second structural schematic diagram of a transfer platform of a construction device for high-pressure jet grouting piles in thick soft soil according to an embodiment of the present invention;

[0029] Figure 8 It is a structural schematic diagram of a support pipe of a construction device for high-pressure jet grouting piles in deep soft soil according to an embodiment of the present invention;

[0030] Fig. 9 It is a schematic structural diagram of the explosion of the rotating pipe and the protective pipe of the construction device of the high-pressure rotary jet pile in the deep soft soil layer according to the embodiment of the present invention;

[0031] Fig.10 It is a schematic diagram of the structure of the clamping seat and the clamping wheel of the construction device of high-pressure rotary jet piles in deep soft soil according to an embodiment of the present invention after being exploded;

[0032] Fig.11 It is a schematic structural diagram of a rotating tube of a construction device for high-pressure rotary jet grouting piles in deep soft soil layers according to an embodiment of the present invention.

[0033] Description of reference numerals:

[0034] 1-support seat; 2-lifting track; 3-transfer platform; 4-support tube; 5-rotating tube; 6-threaded sleeve; 7-protective tube; 8-external threaded tube; 9-internal threaded tube; 10-track; 11-grouting tube; 12-sliding plug; 13-grouting hole; 14-electric cylinder; 15-clamp seat; 1501-slide rail; 16-clamping wheel; 17-annular limit groove; 18-limiting edge; 19-moving plate; 20-limiting friction plate; 21-plug rod; 22-support spring ; 23-installation slot; 24-clamping slot; 25-clamping pin; 2501-first installation section; 2502-clamping section; 26-reset spring; 27-rotating shaft; 28-follower gear; 29-cylinder; 30-driving rack; 31-first motor; 32-driving gear; 33-follower gear ring; 34-first synchronous belt; 35-synchronous gear; 36-second motor; 37-driving wheel; 38-follower wheel; 39-second synchronous belt; 40-external pipe. DETAILED DESCRIPTION

[0035] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0038] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0039] like Figures 1 to 11 As shown, in one embodiment, a construction device for high-pressure jet grouting piles in deep soft soil layers includes a support base 1, a lifting track 2 is fixedly installed at the end of the support base 1, and a transfer platform 3 is slidably arranged on the lifting track 2; a support pipe 4 is arranged on the transfer platform 3, and a rotating pipe 5 is rotatably connected inside, and a threaded sleeve 6 is fixedly connected to the bottom of the rotating pipe 5; a protection component is installed on the threaded sleeve 6, and the protection component includes a protection pipe 7, an external threaded pipe 8 and an internal threaded pipe 9, and the external threaded pipe 8 and the internal threaded pipe 9 are respectively fixedly connected to the two ends of the protection pipe 7, and the external threaded pipe 8 and the internal threaded pipe 9 are respectively fixedly connected to the two ends of the protection pipe 7. 8 is threadedly connected in the threaded sleeve 6; a grouting assembly is arranged in the protective tube 7, the grouting assembly includes a grouting pipe 11, a sliding plug 12 and a grouting hole 13, the grouting pipe 11 is inserted in the protective tube 7, the sliding plug 12 is fixedly sleeved on the surface of the grouting pipe 11 and is in sliding contact with the inner wall of the protective tube 7, and the grouting hole 13 is opened at the bottom end of the side wall of the grouting pipe 11; specifically, the grouting pipe 11 passes through the protective tube 7 and the rotating tube 5 in sequence; a clamping assembly, the clamping assembly is used to clamp and position the grouting pipe 11 inside the rotating tube 5.

[0040] Specifically, a crawler 10 may be installed at the bottom of the support base 1, and a moving part is arranged inside the crawler 10, and the moving part includes an induction wheel, which is installed at the bottom of the support base 1. The induction wheel has a latching tooth, which is engaged in the latching groove of the crawler 10 and rotates. The crawler 10 is driven by the rotation of the induction wheel, and the crawler 10 generates friction with the ground to form an opposite force, so that the support base 1 moves forward or backward, and the movement adjustment of the lifting track 2 is realized.

[0041] As another embodiment, the support base 1 can be directly fixedly installed on the ground to support the lifting track 2.

[0042] It should be understood that when the support seat 1 is in the specified position, the protective pipe 7 and the grouting pipe 11 are synchronously driven to lower their heights through the transfer platform 3, and are in a rotating state driven by the rotating pipe 5 to drill a hole into the soil layer until the specified depth is reached. During the drilling process, the protective pipe 7 performs barrier protection on the outside of the grouting pipe 11 and rubs against the soil layer, reducing the area of ​​direct contact between the surface of the grouting pipe 11 and the soil layer, which is beneficial to protecting the grouting pipe 11 and extending the service life of the grouting pipe 11.

[0043] It should be further explained that the sliding plug 12 blocks the bottom end of the protective pipe 7, and the clamping assembly clamps the grouting pipe 11 and positions it inside the support pipe 4. During the rotation of the rotating pipe 5, the protective pipe 7 and the grouting pipe 11 will be driven to rotate synchronously. The connection between the protective pipe 7 and the sliding plug 12 forms a protective closed pipe, which realizes the surrounding protection of the grouting pipe 11. During the drilling process, the area of ​​direct contact between the grouting pipe 11 and the soil layer is reduced, which is beneficial to reduce the friction loss of the grouting pipe 11 during the drilling process. In addition, during the grouting process, the protective pipe 7 can support and maintain the drilled hole, and as the grouting pipe 11 is lifted for spraying, the protective pipe 7 is gradually pulled out of the drilled spraying hole until the spraying is completed.

[0044] It should be further explained that the length of the grouting pipe 11 and the length of the protective pipe 7 can be set as needed, and the protective pipes 7 are connected by threading the external threaded pipe 8 and the internal threaded pipe 9 to form a butt joint, and the protective pipe 7 and the rotating pipe 5 are connected by threading the threaded sleeve 6 and the external threaded pipe 8. The rotation direction of the rotating pipe 5 is the direction of the threaded butt joint between the threaded sleeve 6 and the external threaded pipe 8 of the protective pipe 7, and is also the rotation direction required for the threaded butt joint between the protective pipes 7, thereby avoiding the loosening of the threaded butt joint of the protective pipe 7 during the drilling process.

[0045] like Figure 1 , Figure 2 , Fig.10 and Fig.11 As shown, in one embodiment, the clamping assembly includes: two electric cylinders 14, which are symmetrically fixed on the inner wall of the rotating tube 5; two clamping seats 15, which are respectively fixedly connected to the output ends of the two electric cylinders 14; a plurality of clamping wheels 16 are divided into two groups, and the two groups of clamping wheels 16 are respectively rotatably arranged on the two clamping seats 15, and annular limiting grooves 17 are provided on the surfaces of the plurality of clamping wheels 16; two limiting edges 18 are fixedly connected to the two sides of the surface of the grouting pipe 11, and docked in the annular limiting grooves 17 on the surfaces of the plurality of clamping wheels 16; two locking assemblies, which are used to lock the two groups of clamping wheels 16 respectively when the plurality of clamping wheels 16 are clamped with the limiting edges 18.

[0046] Specifically, a slide rail 1501 is fixedly connected to the inner wall of the rotating tube 5 , and the clamping seat 15 is slidably arranged on the surface of the slide rail 1501 .

[0047] It should be understood that before clamping, the two clamping wheels 16 limit the two limiting edges 18, and the limiting edges 18 on both sides of the grouting pipe 11 can move in the annular limiting groove 17. Under the rolling support of the clamping wheels 16, the grouting pipe 11 can move freely in the rotating pipe 5 and prevent the grouting pipe 11 from rotating;

[0048] During the process of clamping and positioning the grouting pipe 11, the two electric cylinders 14 are started to synchronously push the two clamping seats 15, and the two clamping seats 15 drive the annular limit grooves 17 of the clamping wheels 16 to dock with the limit edges 18. The clamping wheels 16 on the two clamping seats 15 clamp the limit edges 18 on both sides of the grouting pipe 11, and when multiple clamping wheels 16 clamp the limit edges 18, the two locking assemblies lock the two groups of clamping wheels 16 respectively, so that the grouting pipe 11 is clamped and positioned in the rotating tube 5.

[0049] like Fig.10 and Fig.11 As shown, in one embodiment, the locking assembly includes two movable plates 19, which are symmetrically slidably arranged in the installation cavity of the clamp seat 15, and the two movable plates 19 are respectively rotatably connected to the two groups of clamping wheels 16; two elastic support members, which are respectively arranged between the two movable plates 19 and the inner side walls of the installation cavity of the clamp seat 15; and a limiting friction plate 20, which is fixedly connected to the inner wall of the installation cavity of the clamp seat 15, and when multiple clamping wheels 16 clamp the limiting edge 18, they are in contact with the surface of the clamping wheel 16.

[0050] It should be understood that during the clamping process, the electric cylinder 14 pushes the clamping seat 15 to move, and the clamping seat 15 drives the clamping wheel 16 to clamp the limiting edge 18. The movable plate 19 will compress the elastic support until the clamping wheel 16 is tightly pressed against the limiting friction plate 20. Under the action of the limiting friction plate 20, the clamping wheel 16 is locked to restrict the rotation of the clamping wheel 16. While the clamping wheel 16 clamps and limits the limiting edge 18, the limiting edge 18 and the grouting pipe 11 are clamped and positioned as a whole, so that the grouting pipe 11 and the rotating pipe 5 form a whole.

[0051] like Fig.10 As shown, in one embodiment, the elastic support member includes a plurality of plug-in rods 21, which are fixedly connected to the surface of the movable plate 19 and inserted into the clamp seat 15; a plurality of support springs 22 are respectively sleeved on the surfaces of the plurality of plug-in rods 21, and the two ends of the support springs 22 are respectively fixedly connected to the inner walls of the installation cavities of the movable plate 19 and the clamp seat 15.

[0052] like Figure 4 and Figure 5As shown, in one embodiment, a snap-in assembly is arranged between the sliding plug 12 and the protective tube 7, and the snap-in assembly includes two mounting grooves 23, and the two mounting grooves 23 are opened on the side wall of the sliding plug 12; two snap-in grooves 24, and the two snap-in grooves 24 are opened on both sides of the bottom end of the internal threaded tube 9; the two snap-in pins 25 each include a first mounting section 2501 and a snap-in section 2502, the first mounting section 2501 is inserted into the mounting groove 23, and the snap-in section 2502 is inserted into the snap-in groove 24; two reset springs 26 are respectively arranged in the two mounting grooves 23, and the two ends of the reset spring 26 are respectively fixedly connected to the inner wall of the mounting groove 23 and the first mounting section 2501.

[0053] It should be understood that in the process of the sliding plug 12 plugging and sealing the bottom end of the protective tube 7, under the docking and limiting action of the annular limiting groove 17 and the limiting edge 18 of the clamping wheel 16, the locking pin 25 on the surface of the sliding plug 12 is facing the locking groove 24, pushing the sliding plug 12 so that the locking pin 25 docks with the upper locking groove 24 to form a locking connection, and then the grouting tube 11 is clamped and positioned by the clamping assembly. While the grouting tube 11 is clamped and positioned, the overall connection between the protective tube 7, the rotating tube 5 and the grouting tube 11 is locked to prevent relative rotation between the protective tube 7, the rotating tube 5 and the grouting tube 11.

[0054] like Figure 6 , Figure 7 and Figure 8 As shown, in one embodiment, a flip adjustment assembly is provided between the transfer platform 3 and the support tube 4, and the flip adjustment assembly includes a rotating shaft 27, one end of which is rotatably connected to the surface of the transfer platform 3, and the other end is fixedly connected to the support tube 4; a follower gear 28 is fixedly sleeved on the surface of the rotating shaft 27; a cylinder 29 is fixedly installed on the surface of the transfer platform 3, and a driving rack 30 is fixedly connected to the end of the piston rod, and the driving rack 30 is slidably inserted on the surface of the transfer platform 3 and meshed with the follower gear 28. It should be understood that in the initial connection process, in order to reduce the difficulty of docking, the driving rack 30 is driven to move by the cylinder 29, the driving rack 30 drives the follower gear 28 to rotate, the follower gear 28 drives the rotating shaft 27 to rotate, and the rotating shaft 27 synchronously drives the support tube 4 to flip to a horizontal state, and then the transfer platform 3 is lowered to a position close to the ground, so that the staff can move the protective tube 7 horizontally to dock with the end of the rotating tube 5 in the upper support tube 4, which is conducive to reducing the difficulty of docking.

[0055] like Figure 1 , Figure 2 , Figure 8 and Fig.11As shown, in one embodiment, a driving assembly for driving the rotating tube 5 to rotate is provided on the support tube 4, and the driving assembly includes a first motor 31, the first motor 31 is fixedly mounted on the surface of the support tube 4, and the output end is fixedly connected to a driving gear 32; a follower gear ring 33, the follower gear ring 33 is fixedly sleeved on the surface of the rotating tube 5, and meshes with the driving gear 32.

[0056] It should be understood that by starting the first motor 31, the first motor 31 drives the driving gear 32 to rotate, the first gear drives the follower gear ring 33 to rotate, and the follower gear ring 33 synchronously drives the rotating tube 5 to rotate, thereby driving the protective tube 7 and the grouting tube 11 to rotate as a whole, providing rotational power for drilling when drilling, and providing rotational power for rotating grouting when lifting and spraying.

[0057] like Figure 1 , Figure 2 ,and Figure 3 As shown, in one embodiment, a first synchronous belt 34 is provided on the side of the lifting rail 2, the surface of the first synchronous belt 34 is fixedly connected to the surface of the transfer platform 3, and two synchronous gears 35 are transmission-connected inside the first synchronous belt 34. The two synchronous gears 35 are rotatably connected to the surface of the lifting rail 2, and a rotating drive assembly is provided at one of the synchronous gears 35.

[0058] It should be understood that the synchronous gear 35 is driven to rotate by the rotary drive assembly, and the synchronous gear 35 drives the first synchronous belt 34 to move, thereby driving the transfer platform 3 to move, so as to adjust the height of the transfer platform 3.

[0059] like Figure 1 and Figure 3 As shown, in one embodiment, the rotation drive assembly includes: a second motor 36, the second motor 36 is fixedly mounted on the surface of the support tube 4, and the output end is fixedly connected to the driving wheel 37; a follower wheel 38 is fixedly connected to the surface of the synchronous gear 35 at the corresponding position, and is coaxially arranged with the synchronous gear 35 at the corresponding position, and a second synchronous belt 39 is transmission-connected between the follower wheel 38 and the driving wheel 37. It should be understood that by starting the second motor 36 to rotate, the second motor 36 drives the driving wheel 37 to rotate, the driving wheel 37 synchronously drives the second synchronous belt 39, the second synchronous belt 39 synchronously drives the follower wheel 38, and the follower wheel 38 synchronously drives the coaxially connected synchronous gear 35 to rotate, thereby transmitting the first synchronous belt 34.

[0060] like Figure 1 and Figure 4As shown, in one embodiment, the top end of the grouting pipe 11 is rotatably connected with an external pipe 40. It should be understood that by providing the external pipe 40, a connection path for connecting with the external pipe of the high-pressure grouting pump is provided, and during the rotation of the grouting pipe 11, since the external pipe 40 is rotatably connected to the top end of the grouting pipe 11, the connection state between the external pipe 40 and the high-pressure grouting pump is prevented from hindering the rotation of the grouting pipe 11.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The construction device of high pressure jet grouting pile in thick soft soil layer is characterized by: The invention comprises a support tube (4), a moving platform and a lifting track (2), wherein the support tube (4) is installed on the transfer platform (3), and the moving platform can be raised and lowered by means of the lifting track (2), and the lifting track (2) is fixedly arranged on the support seat (1), and the support tube (4) is rotatably connected to a rotating tube (5) inside, and a protection component is installed at the lower end of the rotating tube (5), and a grouting component is arranged inside the protection component, and one end of the grouting component passes through the rotating tube (5), and a clamping component is arranged inside the rotating tube (5), and the clamping component is used to clamp and position a grouting tube (11) inside the rotating tube (5); The protection assembly comprises a protection tube (7), an externally threaded tube (8) and an internally threaded tube (9); the externally threaded tube (8) and the internally threaded tube (9) are respectively fixedly connected at two ends of the protection tube (7); a threaded sleeve (6) is arranged at the lower end of the rotating tube (5); and the externally threaded tube (8) is threadedly connected in the threaded sleeve (6); The grouting assembly comprises a grouting pipe (11) and a sliding plug (12); the grouting pipe (11) is inserted into the protective pipe (7); the sliding plug (12) is fixedly sleeved on the surface of the grouting pipe (11) and is in sliding contact with the inner wall of the protective pipe (7); and the grouting hole (13) is provided at the bottom end of the side wall of the grouting pipe (11); The clamping assembly comprises two electric cylinders (14), and the two electric cylinders (14) are symmetrically fixedly mounted on the inner wall of the rotating tube (5); a clamping seat (15) is fixedly mounted on the output end of each electric cylinder (14); a plurality of clamping wheels (16) are arranged on each clamping seat (15), and the plurality of clamping wheels (16) are arranged parallel to each other; an annular limiting groove (17) is arranged on the periphery of each clamping wheel (16); a limiting rib (18) is arranged along the axial direction on the outer wall of the grouting tube (11), and the periphery of the limiting rib (18) is connected to the annular limiting groove (17); A locking assembly is arranged on each clamp seat (15), and the locking assembly comprises a movable plate (19). The clamp seat (15) is provided with an installation cavity, and one side of the movable plate (19) is slidably connected to the side wall of the installation cavity, and the other side of the movable plate (19) is rotatably connected to the clamping wheel (16), and the periphery of the clamping wheel (16) can abut against the bottom of the installation cavity. A plug-in rod (21) is arranged at the bottom of the movable plate (19), and the plug-in rod (21) penetrates and is plugged into the clamp seat (15), and a support spring (22) is arranged at the periphery of the plug-in rod (21), and the two ends of the support spring (22) are respectively fixedly connected to the movable plate (19) and the inner wall of the installation cavity of the clamp seat (15).

2. The construction device for high-pressure jet grouting piles in deep soft soil according to claim 1 is characterized in that: A limiting friction plate (20) is installed at the bottom of the installation cavity, and when the clamping wheel (16) is in a state of clamping the limiting edge (18), it is in tight contact with the surface of the clamping wheel (16).

3. The construction device for high-pressure jet grouting piles in deep soft soil according to claim 1 is characterized in that: A snap-fit ​​assembly is arranged between the sliding plug (12) and the protective tube (7), the snap-fit ​​assembly comprising a plurality of snap-fit ​​pins (25), and the plurality of snap-fit ​​pins (25) are arranged circumferentially along the periphery of the sliding plug (12), a plurality of mounting grooves (23) are arranged on the periphery of the sliding plug (12), each snap-fit ​​pin (25) corresponds to a mounting groove (23), and a return spring (26) is arranged in each mounting groove (23), the snap-fit ​​pin (25) comprises a first mounting section (2501) and a snap-fit ​​section (2502), a snap-fit ​​groove (24) is arranged on the internal threaded tube (9), the first mounting section (2501) is inserted into the mounting groove (23), the snap-fit ​​section (2502) is inserted into the mounting groove (23) in the snap-fit ​​groove (24), and two ends of the return spring (26) are respectively fixedly connected to the inner wall of the mounting groove (23) and the first mounting section (2501).

4. The construction device for high-pressure jet grouting piles in deep soft soil according to claim 1 is characterized in that: A flip adjustment component is arranged between the transfer platform (3) and the support tube (4), and the flip adjustment component comprises a rotating shaft (27), a follower gear (28) and a cylinder (29). One end of the rotating shaft (27) is rotatably connected to the surface of the transfer platform (3), and the other end is fixedly connected to the support tube (4). The follower gear (28) is fixedly sleeved on the surface of the rotating shaft (27). The cylinder (29) is fixedly installed on the surface of the transfer platform (3), and the end of the piston rod is fixedly connected to a driving rack (30). The driving rack (30) is slidably inserted on the surface of the transfer platform (3) and meshes with the follower gear (28).

5. The construction device for high-pressure jet grouting piles in deep soft soil according to claim 1 is characterized in that: A driving assembly for driving the rotating tube (5) to rotate is arranged on the supporting tube (4), and the driving assembly comprises a first motor (31) and a follower gear ring (33). The first motor (31) is fixedly mounted on the surface of the supporting tube (4), and an output end thereof is fixedly connected to a driving gear (32). The follower gear ring (33) is fixedly sleeved on the surface of the rotating tube (5) and meshes with the driving gear (32).

6. The construction device for high-pressure jet grouting piles in thick soft soil according to claim 1 is characterized by: A first synchronous belt (34) is arranged on the side of the lifting track (2), the surface of the first synchronous belt (34) is fixedly connected to the surface of the transfer platform (3), two synchronous gears (35) are transmission-connected inside the first synchronous belt (34), the two synchronous gears (35) are rotationally connected to the surface of the lifting track (2), and a rotating drive component is arranged at one of the synchronous gears (35).

7. The construction device for high-pressure jet grouting piles in deep soft soil according to claim 6, characterized in that: The rotary drive assembly comprises a second motor (36) and a follower wheel (38). The second motor (36) is fixedly mounted on the surface of the lifting track (2), and the output end is fixedly connected to a driving wheel (37). The follower wheel (38) is fixedly connected to the surface of the synchronous gear (35) at a corresponding position, and is coaxially arranged with the synchronous gear (35) at the corresponding position. A second synchronous belt (39) is transmission-connected between the follower wheel (38) and the driving wheel (37).

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