High-pressure jet grouting pile construction auxiliary device

Abstract

The utility model relates to a high-pressure jet grouting pile construction auxiliary device which comprises a movable base, and a swing rack, a mechanical arm and a telescopic rod used for driving the swing rack to rotate are arranged on the movable base. The swing rack is provided with a rotating motor, a lifting base, a drill bit rod and a drill bit splicing rod, a drill bit rotating seat in transmission connection with the rotating motor is arranged on the lifting seat; after the telescopic rod drives the swing rack to rotate to a transverse state, the drill bit rod or the drill bit splicing rod is picked up through the mechanical arm to move to the swing rack and is in butt joint with the drill bit rotating seat; after the telescopic rod drives the swing rack to rotate to a vertical state, the rotary motor drives the drill bit rotating seat and drives the drill bit rod or the drill bit splicing rod to rotate, and meanwhile the lifting seat drives the drill bit rotating seat and drives the drill bit rod or the drill bit splicing rod to ascend or descend. According to the utility model, the labor intensity of constructors can be effectively reduced, the construction efficiency and the construction safety are higher, and the automation degree in the construction process of the jet grouting pile is obviously improved.

Description

Technical Field

[0001] The utility model relates to the technical field of infrastructure construction, in particular to a high-pressure jet grouting pile construction auxiliary device. Background Art

[0002] Jet grouting technology is a foundation treatment technology that uses high-pressure rotary jetting of cement slurry into the ground, which is mixed with the soil to form a columnar body with certain strength and rigidity to enhance the bearing capacity and stability of the foundation. It is suitable for foundation reinforcement of roads, bridges, buildings, as well as slope protection, groundwater control, etc. With the acceleration of urbanization and the rapid development of infrastructure construction, the requirements for foundation engineering are getting higher and higher, especially in areas with insufficient foundation bearing capacity and poor soil stability. As an effective means of foundation reinforcement, the demand for jet grouting technology is growing. However, the traditional jet grouting construction equipment is complicated to operate, requires high skills from operators, has relatively low construction efficiency, and has high safety risks. With the development of automation technology and information technology, by integrating advanced automated control systems and rapid loading and unloading mechanisms, construction efficiency can be significantly improved, human errors can be reduced, labor intensity can be reduced, and safety can be improved. Furthermore, modern engineering construction pays more and more attention to environmental protection and safety standards. The fully automated quick-install high-pressure rotary jet pile construction auxiliary device can ensure the safety of the construction site while reducing environmental impact, especially in complex geological conditions or dense urban environments. Although the initial investment in automated equipment is relatively high, it can maximize economic benefits throughout the entire project cycle by improving construction efficiency, reducing construction time, and reducing labor costs.

[0003] However, traditional jet grouting technology mainly relies on manual operation for drilling, spraying and mixing processes. The manual operation method has problems such as low construction efficiency, cumbersome operation, high labor intensity, poor construction safety, and construction quality is greatly affected by operating skills. Utility Model Content

[0004] In order to solve the technical problems existing in the prior art, the utility model provides a high-pressure rotary jet grouting pile construction auxiliary device, which can effectively reduce the labor intensity of construction personnel, improve construction efficiency and construction safety, and significantly improve the degree of automation in the rotary jet grouting pile construction process.

[0005] The utility model discloses a high-pressure jet grouting pile construction auxiliary device, comprising a mobile base, on which a swing frame, a mechanical arm and a telescopic rod for driving the swing frame to rotate are arranged;

[0006] The swing frame is provided with a rotary motor, a lifting seat, and a drill rod and a drill splicing rod suitable for docking with each other; the lifting seat is provided with a drill rotating seat which is transmission-connected to the rotary motor;

[0007] Wherein, after the telescopic rod drives the swing frame to rotate to the horizontal state, the drill rod or the drill splicing rod is picked up by the mechanical arm and moved to the swing frame and docked with the drill rotating seat;

[0008] After the telescopic rod drives the swing frame to rotate to a vertical state, the rotary motor drives the drill rotating seat and rotates the drill rod or drill splicing rod together, while the lifting seat drives the drill rotating seat and the drill rod or drill splicing rod to rise or fall.

[0009] According to the utility model, a high-pressure jet grouting pile construction auxiliary device is provided on the mobile base, and a feed box and a feed pipe are provided on the feed pipe, and a feed pump is provided on the feed pipe;

[0010] One end of the feed pipe is connected to the feed box, and the other end is connected to the drill rod or the drill splicing rod by being inserted into the drill rotating seat.

[0011] According to the utility model, a high-pressure rotary jet grouting pile construction auxiliary device is provided on the mobile base; one end of the drag chain is connected to the swing frame, and the other end is connected to the lifting seat and driven by the lifting seat; a part of the feed pipe penetrates into the interior of the drag chain.

[0012] According to the utility model, a high-pressure jet grouting pile construction auxiliary device is provided on the mobile base with a laterally extending fixed support;

[0013] The number of the mechanical arms is at least two, and each mechanical arm is arranged transversely on the fixed support.

[0014] According to the utility model of a high-pressure jet grouting pile construction auxiliary device, a collection frame is provided on the mobile base, and the collection frame extends transversely and is located between the fixed support and the swing frame;

[0015] A plurality of the drill bit splicing rods are placed in the collection frame.

[0016] According to the utility model, a high-pressure jet grouting pile construction auxiliary device, two limiting rings arranged in a straight line are arranged on the swing frame;

[0017] When the mechanical arm picks up the drill rod or the drill splicing rod and moves it to the swing frame, each of the limit rings is sleeved on the drill rod or the drill splicing rod and positions the drill rod or the drill splicing rod to coaxially dock with the drill rotating seat.

[0018] According to the utility model, a high-pressure rotary jet pile construction auxiliary device is provided with a pivot seat at the bottom of the limiting ring, and the limiting ring includes two elastic clamping hooks which are elastically pivoted on the pivot seat and closed to each other, and the top ends of the two elastic clamping hooks abut against each other.

[0019] According to the utility model of a high-pressure jet grouting pile construction auxiliary device, a plurality of jacks are respectively arranged on opposite sides of the mobile base; the mobile base is supported upward by each of the jacks.

[0020] The utility model discloses a high-pressure rotary jet pile construction auxiliary device. In the process of executing the high-pressure rotary jet pile construction, the swing frame can be controlled to switch to the horizontal state in advance by the telescopic rod to control the swing frame. Then, the mechanical arm picks up the drill rod or the drill splicing rod, moves it to the swing frame and docks it with the drill rotating seat. Then, by controlling the rotation of the drill rotating seat, the drill rotating seat and the drill rod or the drill splicing rod can be threadedly connected with each other, and the pre-installation of the drill rod or the drill splicing rod can be automatically completed. Subsequently, the swing frame is controlled to switch to the vertical state by the telescopic rod to put the drill rod or the drill splicing rod in the vertical posture for drilling into the soil layer. The throat is locked to start the rotating motor, drive the drill rotating seat and rotate the drill rod or the drill splicing rod, and synchronously control the lifting. The lowering seat drives the drill bit rotating seat and the drill bit rod or the drill bit splicing rod to descend, so that the drill bit rod or the drill bit splicing rod can be smoothly drilled into the soil layer. The operation is simple and convenient, with high automation and construction efficiency. After the hole reaches a certain depth, cement slurry is immediately injected into the drill bit rod and the drill bit splicing rod, and the cement slurry is sprayed into the soil layer through the drill bit rod to realize the construction of the underground pile body. After the drilling and cement slurry injection are completed, the lifting seat is controlled to drive the drill bit rotating seat and the drill bit rod and the drill bit splicing rod to rise, so that the construction of a high-pressure rotary jet pile can be completed. The whole construction process has a high degree of automation, which can effectively reduce the labor intensity of construction personnel, and the construction efficiency and construction safety are higher, which significantly improves the degree of automation in the rotary jet pile construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is the overall structure diagram of the utility model;

[0023] Figure 2 It is a partial structural diagram of the utility model (the swing frame is in a horizontal state);

[0024] Figure 3 It is an enlarged view of part of the structure of the utility model;

[0025] Figure 4 It is a partial structural diagram of the utility model (the swing frame is in a vertical state);

[0026] Figure 5 It is a structural diagram of the limit ring of the utility model.

[0027] Reference numerals:

[0028] 1. Mobile base, 11. Fixed support, 12. Collection frame, 13. Jack, 14. Mobile crawler;

[0029] 2. Swinging frame, 21. Rotating motor, 22. Lifting seat, 23. Drill rod, 24. Drill splicing rod, 25. Drill rotating seat;

[0030] 3. Robotic arm;

[0031] 4. Telescopic rod;

[0032] 5. Feed box, 51. Feed pipe, 52. Drag chain;

[0033] 6. Limiting ring, 61. Pivot seat, 62. Elastic clip hook. DETAILED DESCRIPTION

[0034] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the utility model, and cannot be understood as limitations on the utility model. In the description of the utility model, it is necessary to understand that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the utility model 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 limitations on the utility model.

[0035] like Figures 1 to 5As shown, a high-pressure rotary jet pile construction auxiliary device of this embodiment includes a mobile base 1, and mobile crawlers 14 are installed on both sides of the mobile base 1, so the mobile crawlers 14 and the internal motor system can drive the mobile base 1 to the position where piling is required. In addition, a swing frame 2, a mechanical arm 3 and a telescopic rod 4 are installed on the mobile base 1. The swing frame 2 is pivoted on the mobile base 1 and can deflect and swing up and down. A horizontally extending fixed support 11 is installed on the mobile base 1. The number of mechanical arms 3 is two, and the two mechanical arms 3 are arranged horizontally on the fixed support 11. The telescopic rod 4 is installed in an inclined manner and its telescopic end is connected to the swing frame 2 upward, which is used to drive the swing frame 2 to rotate up and down. The telescopic rod 4 extends obliquely forward on the mobile base 1, and the telescopic end of the telescopic rod 4 is transmission-connected to the swing frame 2, so the swing frame 2 can be driven to rotate to a vertical state by extending the telescopic end of the telescopic rod 4, and the swing frame 2 can be driven to rotate to a horizontal state by contracting the telescopic end of the telescopic rod 4, so that the swing frame 2 can be easily switched between the horizontal state and the vertical state. The swing frame 2 is equipped with a rotary motor 21, a lifting seat 22, a drill rod 23 and a drill splicing rod 24 suitable for docking with each other, and the lifting seat 22 is equipped with a drill rotating seat 25 which is transmission-connected to the rotary motor 21, that is, the drill rotating seat 25 can be driven to rotate by the rotary motor 21. When in use, the telescopic rod 4 drives the swing frame 2 to rotate to the horizontal state, and then the mechanical arm 3 picks up the drill rod 23 or the drill splicing rod 24, moves it to the swing frame 2 and docks it with the drill rotating seat 25. It should be noted that in the prior art in this field, the drill rod 23 and the drill splicing rod 24 generally have connecting threads at the ends, so that the drill rod 23 and the drill splicing rod 24 that are docked with each other can be threadedly connected in a rotating manner, and the drill rotating seat 25 of this embodiment is also provided with a threaded hole, which matches the end threads of the drill rod 23 and the drill splicing rod 24. Therefore, when the mechanical arm 3 picks up the drill rod 23 or the drill splicing rod 24, moves it to the swing frame 2 and docks it with the drill rotating seat 25, and then drives the drill rotating seat 25 to rotate by the rotating motor 21, the drill rod 23 or the drill splicing rod 24 can be automatically threadedly connected to the drill rotating seat 25. On the other hand, after the telescopic rod 4 drives the swing frame 2 to rotate to a vertical state, the rotating motor 21 drives the drill rotating seat 25 and the drill rod 23 or the drill splicing rod 24 to rotate, while the lifting seat 22 drives the drill rotating seat 25 and the drill rod 23 or the drill splicing rod 24 to rise or fall.

[0036] It can be understood that the high-pressure rotary jet pile construction auxiliary device of the present embodiment can control the swing frame 2 to switch to the horizontal state in advance through the telescopic rod 4 during the high-pressure rotary jet pile construction process, and then the mechanical arm 3 picks up the drill rod 23 or the drill splicing rod 24 and moves it to the swing frame 2 and docks it with the drill rotating seat 25, and then by controlling the rotation of the drill rotating seat 25, the drill rotating seat 25 and the drill rod 23 or the drill splicing rod 24 can be threadedly connected to each other, and the pre-installation of the drill rod 23 or the drill splicing rod 24 can be automatically completed, and then the swing frame 2 is controlled to switch to the vertical state through the telescopic rod 4, so that the drill rod 23 or the drill splicing rod 24 can be put into a vertical posture for drilling into the soil layer, and the throat is locked to start the rotating motor 21, drive the drill rotating seat 25 and rotate the drill rod 23 or the drill splicing rod 24 together, The lifting seat 22 is also synchronously controlled to drive the drill bit rotating seat 25 and the drill bit rod 23 or the drill bit splicing rod 24 to descend, so that the drill bit rod 23 or the drill bit splicing rod 24 can be smoothly drilled into the soil layer. The operation is simple and convenient, and the degree of automation and construction efficiency are high. After the drilling reaches a certain depth, cement slurry is immediately injected into the drill bit rod 23 and the drill bit splicing rod 24, and the cement slurry is sprayed into the soil layer through the drill bit rod 23 to realize the construction of the underground pile body. After the drilling and the injection of cement slurry are completed, the lifting seat 22 is controlled to drive the drill bit rotating seat 25 and the drill bit rod 23 and the drill bit splicing rod 24 are raised, so that the construction of a high-pressure rotary jet pile can be completed. The whole construction process has a high degree of automation, which can effectively reduce the labor intensity of the construction personnel, and the construction efficiency and construction safety are higher, which significantly improves the degree of automation in the rotary jet pile construction process.

[0037] Specifically, a feed box 5 and a feed pipe 51 are also installed on the mobile base 1. A feed pump (not shown) is provided on the feed pipe 51. One end of the feed pipe 51 is connected to the feed box 5, and the other end is connected to the drill rod 23 or the drill splicing rod 24 by inserting into the drill rotating seat 25. It can be understood that when the drilling reaches a certain depth, the rotary grouting construction can be carried out.

[0038] During the jet grouting construction process, under the action of the feed pump, the feed box 5 can deliver cement slurry to the drill rod 23 or the drill splicing rod 24 through the feed pipe 51, so that the cement slurry can be smoothly injected into the soil layer and sprayed outward. Optionally, in this embodiment, the drill rotating seat 25 is sleeved with a bearing at the interface with the feed pipe 51, and the feed pipe 51 needs to be sleeved on the inner ring of the bearing when inserted into the drill rotating seat 25, so that the feed pipe 51 will not rotate with the drill rotating seat 25.

[0039] Furthermore, since the feed pipe 51 is a tube made of flexible material and has a long length, it often moves up and down together with the drill rotating seat 25 on the lifting seat 22, which will affect the stability of the feed pipe 51 on the equipment and easily interfere with other moving parts during the following movement. Therefore, in this embodiment, a drag chain 52 is additionally installed on the mobile base 1, one end of the drag chain 52 is connected to the swing frame 2, and the other end is connected to the lifting seat 22 and driven by the lifting seat 22. A part of the feed pipe 51 penetrates into the interior of the drag chain 52, so under the limiting effect of the drag chain 52, the stability of the feed pipe 51 during the lifting process can be effectively ensured.

[0040] Specifically, a collection frame 12 is installed on the mobile base 1, the collection frame 12 extends horizontally and is located between the fixed support 11 and the swing frame 2, and a plurality of drill bit splicing rods 24 are placed in the collection frame 12. The collection frame 12 is used to collect a plurality of drill bit splicing rods 24, and the collection frame 12 is close to the installation position of the mechanical arm 3, so it is convenient for the mechanical arm 3 to pick up the drill bit splicing rods 24 at a fixed point.

[0041] In one embodiment, two limiting rings 6 arranged in a straight line are installed on the swing frame 2. In fact, the arrangement direction of the two limiting rings 6 is consistent with the length direction of the drill rod 23 or the drill splicing rod 24. When the robotic arm 3 picks up the drill rod 23 or the drill splicing rod 24 and moves it to the swing frame 2, each limiting ring 6 is sleeved on the drill rod 23 or the drill splicing rod 24 and positions the drill rod 23 or the drill splicing rod 24 to be coaxially connected to the drill rotating seat 25. Therefore, the two limiting rings 6 can assist the drill rod 23 or the drill splicing rod 24 in the accurate positioning and installation in the swing frame 2. Specifically, a pivot seat 61 is installed at the bottom of the limiting ring 6, and the limiting ring 6 includes two elastic clamping hooks 62 which are elastically pivoted on the pivot seat 61 and closed with each other, and the top ends of the two elastic clamping hooks 62 abut against each other. When the robotic arm 3 picks up the drill bit rod 23 or the drill bit splicing rod 24 and places it downward on the top of the two elastic clamping hooks 62, the two elastic clamping hooks 62 are pushed to open by the weight of the drill bit rod 23 or the drill bit splicing rod 24, so that the drill bit rod 23 or the drill bit splicing rod 24 can slide down between the two elastic clamping hooks 62 and be elastically clamped by the two elastic clamping hooks 62. After the drill bit rod 23 or the drill bit splicing rod 24 slides down between the two elastic clamping hooks 62, the two elastic clamping hooks 62 are reset and closed, which successfully limits the movement of the drill bit rod 23 or the drill bit splicing rod 24, and can assist the drill bit rod 23 or the drill bit splicing rod 24 in the accurate positioning and installation in the swing frame 2.

[0042] Furthermore, two jacks 13 are respectively provided on the opposite sides of the mobile base 1, and the mobile base 1 is supported upward by four jacks 13. That is to say, the four jacks 13 are distributed at four diagonal positions of the mobile base 1. When the mobile track 14 drives the mobile base 1 to move to the specified position, the mobile base 1 can be supported upward by each jack 13 to ensure the fixed positioning of the entire construction equipment.

[0043] The method of using this embodiment is as follows:

[0044] S1, control the mobile crawler 14 to drive the mobile base 1 of the construction equipment to move to the position where construction is required, and then start the jack 13 to support the mobile base 1, so that the mobile base 1 is fixed at the position where construction is required, ensuring that the entire construction equipment is in a horizontal state;

[0045] S2, after the swing frame 2 is driven to rotate to the lateral state and the horizontal state by the telescopic rod 4, the mechanical arm 3 picks up the drill rod 23 and places it in the limit ring 6 of the swing frame 2 and docks it with the drill rotating seat 25, and then drives the drill rotating seat 25 to rotate by the rotating motor 21, so that the drill rod 23 is threadedly connected to the drill rotating seat 25;

[0046] S3, after the swing frame 2 is driven to rotate to the vertical state by the telescopic rod 4, the drill rod 23 is driven to rotate by the rotary motor 21, and the drill rod 23 is driven to descend and drill into the underground soil layer by the lifting seat 22; at the same time, the feed box 5 delivers high-pressure cement slurry to the drill rod 23 through the feed pump and the feed pipe 51, and the construction of the jet grouting pile begins;

[0047] S4, after the drill rod 23 is completely driven into the underground soil, the feed pump stops feeding, and drives the drill rotating seat 25 to rotate in the opposite direction through the rotating motor 21, so that the drill rotating seat 25 is separated from the drill rod 23; then, the telescopic rod 4 is used again to drive the swing frame 2 to rotate to the horizontal state and the horizontal state, and the mechanical arm 3 picks up the drill splicing rod 24 and places it in the limiting ring 6 of the swing frame 2 and docks it with the drill rotating seat 25, and then drives the drill rotating seat 25 to rotate through the rotating motor 21, so that the drill splicing rod 24 is threadedly connected to the drill rotating seat 25;

[0048] S5, after the telescopic rod 4 is used to drive the swing frame 2 to rotate to the vertical state again, the drill bit splicing rod 24 is docked with the drill bit rod 23, and the drill bit splicing rod 24 is driven to rotate by the rotating motor 21, so that the drill bit splicing rod 24 is threadedly connected to the drill bit rod 23 and drives the drill bit splicing rod 24 and the drill bit rod 23 to rotate together, and the drill bit splicing rod 24 is driven to descend through the lifting seat 22 and continue to drill into the underground soil layer; at the same time, the feed box 5 conveys high-pressure cement slurry to the drill bit splicing rod 24 through the feed pump and the feed pipe 51, and the construction of the rotary jet pile is continued;

[0049] S6. After the first section of the drill bit spliced ​​rod 24 is completely driven into the underground soil, continue to repeat steps S4 and S5, and allow multiple sections of the drill bit spliced ​​rod 24 to be docked and fixed in turn, and then continue to drill into the underground soil and continue the construction of the rotary jet pile until it is drilled to a preset fixed depth, completing the construction of the rotary jet pile.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A high-pressure jet grouting pile construction auxiliary device, characterized in that: It comprises a mobile base (1), on which a swing frame (2), a mechanical arm (3) and a telescopic rod (4) for driving the swing frame (2) to rotate are arranged; The swing frame (2) is provided with a rotating motor (21), a lifting seat (22), and a drill rod (23) and a drill splicing rod (24) suitable for docking with each other; the lifting seat (22) is provided with a drill rotating seat (25) which is transmission-connected to the rotating motor (21); After the telescopic rod (4) drives the swing frame (2) to rotate to a horizontal state, the mechanical arm (3) picks up the drill rod (23) or the drill splicing rod (24), moves it to the swing frame (2), and docks with the drill rotating seat (25); After the telescopic rod (4) drives the swing frame (2) to rotate to a vertical state, the rotary motor (21) drives the drill rotating seat (25) and the drill rod (23) or the drill splicing rod (24) to rotate, while the lifting seat (22) drives the drill rotating seat (25) and the drill rod (23) or the drill splicing rod (24) to rise or fall.

2. The high-pressure jet grouting pile construction auxiliary device according to claim 1 is characterized in that: The movable base (1) is provided with a feed box (5) and a feed pipe (51), and the feed pipe (51) is provided with a feed pump; One end of the feed pipe (51) is connected to the feed box (5), and the other end is connected to the drill rod (23) or the drill splicing rod (24) by being inserted into the drill rotating seat (25).

3. The high-pressure jet grouting pile construction auxiliary device according to claim 2 is characterized in that: A drag chain (52) is provided on the movable base (1); one end of the drag chain (52) is connected to the swing frame (2), and the other end is connected to the lifting seat (22) and driven by the lifting seat (22); a part of the feeding pipe (51) penetrates into the interior of the drag chain (52).

4. The high-pressure jet grouting pile construction auxiliary device according to claim 2 is characterized in that: The movable base (1) is provided with a transversely extending fixed support (11); The number of the mechanical arms (3) is at least two, and each of the mechanical arms (3) is arranged transversely on the fixed support (11).

5. The high-pressure jet grouting pile construction auxiliary device according to claim 4 is characterized in that: A collecting frame (12) is provided on the movable base (1), and the collecting frame (12) extends transversely and is located between the fixed support (11) and the swing frame (2); A plurality of drill bit splicing rods (24) are placed in the collection frame (12).

6. The high-pressure jet grouting pile construction auxiliary device according to claim 1, characterized in that: The swing frame (2) is provided with two limiting rings (6) arranged in a straight line; When the mechanical arm (3) picks up the drill rod (23) or the drill splicing rod (24) and moves to the swing frame (2), each of the limiting rings (6) is sleeved on the drill rod (23) or the drill splicing rod (24) and positions the drill rod (23) or the drill splicing rod (24) so ​​that it is coaxially docked with the drill rotating seat (25).

7. The high-pressure jet grouting pile construction auxiliary device according to claim 6, characterized in that: A pivot seat (61) is provided at the bottom of the limiting ring (6), and the limiting ring (6) comprises two elastic clip hooks (62) which are elastically pivoted on the pivot seat (61) and closed to each other, and the top ends of the two elastic clip hooks (62) are in contact with each other.

8. The high-pressure jet grouting pile construction auxiliary device according to claim 1, characterized in that: A plurality of jacks (13) are respectively arranged on opposite sides of the mobile base (1); the mobile base (1) is supported upward by each of the jacks (13).

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