Bidirectional cutting mixing pile machine and method capable of quickly connecting and disconnecting drill rod

By designing a bidirectional cutting mixer for quick connection and removal of drill rods, the use of a detachable and connected drill rod assembly and extension mechanism, the stability and overturning risks of high pile frames on weak foundations is solved, the height regulations are met, and transportation costs are reduced.

CN119640779APending Publication Date: 2025-03-18SHANGHAI STRONG FOUND ENG
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Patent Information

Application Number
CN202411816614.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-11
Publication Date
2025-03-18

AI Technical Summary

Technical Problem

The stability of the medium and high pile frames on weak foundations, the risk of overturning and obstacle restrictions of obstacles in the prior art is difficult to meet the administrative regulations of heights exceeding 35m.

Method used

A two-way cutting mixing pile machine for quick connection and removal of drill rods is designed. The first drill rod and the second drill rod that can be detached and connected are used to achieve construction through two-stage assembly relay, the overall height is controlled to be no more than 35m, and the stability and safety of the equipment are improved through the extension mechanism and the stabilization mechanism.

Benefits of technology

It has achieved improvement of equipment stability and safety on weak foundations, reduced the risk of overturning, met the height regulations of no more than 35m, and simplified the transportation and storage process, reducing transportation costs.

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Abstract

The embodiment of the invention relates to the technical field of foundation construction, and discloses a two-way cutting mixing pile machine and method for quickly connecting and disconnecting a drill rod, and the two-way cutting mixing pile machine comprises a walking device used for driving the device to move on a foundation; the tower frame is arranged on the walking device, and the tower frame is used for providing support; and a connecting device. According to the bidirectional cutting mixing pile machine and method for quickly connecting and disconnecting the drill rods, through the arrangement of the first drill rod and the second drill rod which are detachable and connectable, when the preset depth of a mixing pile is large, the completion of construction can be ensured through the assembly relay of the two-section type first drill rod and the second drill rod, and certainly, the construction efficiency is improved. Due to the fact that the two-section type first drill rod and the two-section type second drill rod are assembled and constructed, the height of the portions, exposed out of the foundation, of the first drill rod and the second drill rod after the first drill rod and the second drill rod are assembled can be controlled, for example, the stipulation that the height is not larger than 35 m can be met, safety is improved, and meanwhile the stipulation of related policies is met.
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Description

Technical Field

[0001] The present application relates to the technical field of foundation construction, and in particular to a bidirectional cutting and mixing pile machine and method for quickly connecting and disconnecting a drill rod. Background Art

[0002] A pile mixer is a mechanical device used for foundation treatment. It mixes the curing agent (such as cement slurry) with the soil through a mixing machine to form a columnar reinforcement with certain strength and stability. According to the construction method and the curing agent used, pile mixers can be divided into many types, such as single-axis mixing piles, double-axis mixing piles, three-axis mixing piles, cement mixing piles, lime mixing piles, fly ash mixing piles, etc. Among them, cement mixing piles are the most commonly used type.

[0003] In order to achieve the goal of replacing bored cast-in-place piles with rigid composite piles, it is necessary to first form high-quality fluidized solidified soil piles. When the length of the pile reaches more than 30m, the traditional method is to set up a pile frame with a height of more than 40m, and install a single-axis mixing pile machine with a length of more than 40m on the pile frame to construct fluidized solidified soil mixing piles. Since the pile frame is high, when the foundation is a soft soil layer, the walking foundation of the pile driver needs to be specially treated, which will incur high foundation treatment costs. Secondly, when encountering stormy and windy weather, the pile frame is more likely to overturn. When there are obstacles such as viaducts, building cantilevered floors, or overhead wires within the airspace of the site, this type of pile frame will not be able to be constructed.

[0004] In some coastal cities, the government has issued administrative regulations to control the height of pile frames to no more than 35m in order to deal with the hazards caused by the overturning of high pile frames. Therefore, the construction industry has put forward the requirement to reduce the height of the drilling rig for construction equipment of rigid composite piles over 30m. Summary of the invention

[0005] In response to the shortcomings of the prior art, the present application provides a bidirectional cutting and mixing pile machine and method for quickly connecting and removing drill rods, which solves the problems of stability, overturning risk and obstacle restrictions of high pile frames on soft foundations in the prior art, while also addressing the problem of administrative restrictions on heights exceeding 35m.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] On the first aspect, an embodiment of the present application provides a bidirectional cutting and mixing pile machine for quickly connecting and removing drill rods, comprising: a walking device, used to drive the device to move on the foundation; a tower frame, the tower frame is arranged on the walking device, and the tower frame is used to provide support; a connecting device, a connecting device is arranged between the tower frame and the walking device, and the tower frame is connected to the walking device through the connecting device; a stirring device, the stirring device includes a cage stirring shaft, a fixed-axis gear train reversing rotation device and a drill bit, and the stirring device is used to perform bidirectional cutting and bidirectional stirring on the soil layer in the mixing pile; an extending mechanism, the extending mechanism is arranged at the bottom of the walking device, and is used to provide more stable support when the tower frame is higher; a stabilizing mechanism, the stabilizing mechanism is used to provide more stable lateral support for the extending mechanism; a strengthening mechanism, the strengthening mechanism is used to provide a stepped support effect.

[0008] Preferably, the tower is provided with a first power head and a second power head, the first power head is provided with a first drill rod, the second power head is provided with a second drill rod, the tower is provided with a first guide rail and a second guide rail, the first guide rail and the second guide rail are arranged parallel to each other, the first guide rail and the second guide rail are both extended along the length direction of the tower, the first power head is arranged on the first guide rail, the second power head is arranged on the second guide rail, and a suspension device is provided at the end of the tower away from the foundation.

[0009] Preferably, a control device is provided on the traveling device, and the control device can control the operation of the traveling device, adjust the vertical angle of the tower relative to the foundation, and control the operation of the first power head and the operation of the second power head.

[0010] Preferably, the connecting device includes a hinged portion and a support column, the hinged portion is used to achieve relative rotation between the tower and the walking device, and the support column is used to provide a suitable supporting force for the tower.

[0011] Preferably, a cage-type stirring shaft is provided on the first drill rod, a fixed-axis gear train reversing rotation device is provided on the first drill rod, and a drill bit is provided on the first drill rod.

[0012] Preferably, a limiting device is provided on the walking device, and the limiting device is located on both sides of the walking device. The limiting device is used to limit the walking device in the direction of the horizontal line connecting the first power head and the second power head. The limiting distance of the walking device by the limiting device is equal to the horizontal distance between the axis of the first drill rod and the axis of the second drill rod.

[0013] The top of the extension mechanism comprises an upper connecting plate, the upper connecting plate is arranged on the bottom of the walking device, and the bottom of the upper connecting plate is fixedly connected to one end of the telescopic rod, and the other end of the telescopic rod is fixedly connected to the load-bearing square block, the bottom of the load-bearing square block is fixedly connected to the bottom load-bearing seat, the outer wall of the bottom load-bearing seat is fixedly connected to the side limit plate, the bottom of the upper connecting plate is fixedly connected to the bottom connecting head, the bottom of the bottom connecting head is fixedly connected to one end of the load-bearing spring, the other end of the load-bearing spring is fixedly connected to the extension load-bearing block, the top of the extension load-bearing block is hinged with one end of the oblique connecting column member, the other end of the oblique connecting column member is hinged on the inner wall of the bottom connecting head, and a strengthening mechanism is arranged on the inner wall of the extension load-bearing block, and the strengthening mechanism comprises spring two, one end of the spring two is fixedly connected to the inner wall of the extension load-bearing block, and the other end of the spring two is fixedly connected to the long strip block, and the outer wall of the long strip block is rotatably connected with a ball bearing.

[0014] Preferably, a slope is provided on the side of the bottom load-bearing seat, the outer wall of the extended load-bearing block is slidably connected to the inner wall of the side limit plate, and a plurality of strengthening mechanisms are provided, and the strengthening mechanisms are arranged in an array.

[0015] Preferably, a stabilizing mechanism is provided at the top of the bottom load-bearing seat, and the stabilizing mechanism includes a guide bar, the guide bar is fixedly connected to the top of the bottom load-bearing seat, the top of the guide bar is slidably connected to a guide block, the outer wall of the guide block is hinged with one end of an intermediate connecting bar, the other end of the intermediate connecting bar is hinged with a guide head, the guide head is fixedly connected to the outer wall of the protruding load-bearing block, the outer wall of the load-bearing square block is fixedly connected to one end of a spring one, and the other end of the spring one is fixedly connected to the outer wall of the guide block.

[0016] In a second aspect, the embodiment of the present application further provides a method for using a bidirectional cutting and mixing pile machine for quickly connecting and removing a drill rod, which is applied to the above-mentioned bidirectional cutting and mixing pile machine for quickly connecting and removing a drill rod, and includes the following steps:

[0017] Step 1: Move the bidirectional cutting and mixing pile machine to the area to be drilled and adjust the bidirectional cutting and mixing pile machine to a standby state. Use the control device to operate the walking device to move to the area to be drilled, and use the control device to operate the bidirectional cutting and mixing pile machine to a standby state. Drive the first power head to drive the first drill rod to mix and form piles on the foundation. Use the control device to operate the first power head so that the first power head drives the first drill rod to rotate and move forward in the direction of the foundation, so that the first drill rod is constructed on the foundation and forms a mixing pile. When the first drill rod reaches the maximum depth, remove the first drill rod from the first power head and connect it to the second drill rod. When the first drill rod reaches the maximum depth of its drilling, remove the first drill rod from the first power head, assemble and connect the first drill rod and the second drill rod, and drive the second power head to drive the first drill rod and the second drill rod to mix and form piles on the foundation until the mixing pile reaches The second power head is controlled by the control device so that the second power head drives the first drill rod and the second drill rod to continue to mix and form piles on the foundation until the mixing pile reaches the predetermined depth, and the first drill rod and the second drill rod are recovered by the first power head and the second power head, and the first drill rod and the second drill rod are finally recovered by controlling the first power head and the second power head through the control device, so that the first drill rod and the second drill rod are moved out of the mixing pile; adjusting the bidirectional cutting and mixing pile machine to be in a waiting state specifically includes: adjusting the verticality of the tower relative to the foundation by the control device, controlling the first power head to move to the end of the tower away from the foundation by the control device, controlling the second power head to move to the end of the tower away from the foundation by the control device, and installing the first drill rod and the second drill rod on the first power head and the second power head respectively, so that the bidirectional cutting and mixing pile machine is in a working state;

[0018] Step 2: disassembling the first drill rod from the first power head and connecting it to the second drill rod specifically includes: after disassembling the first drill rod from the first power head, the control device controls the walking device to move under the limiting action of the limiting device, so that the position of the first drill rod can be aligned with the position of the second drill rod, and then assembling and connecting the first drill rod and the second drill rod;

[0019] Step 3: Recovering the first drill rod and the second drill rod by the first power head and the second power head specifically includes: driving the second power head to move until the second drill rod is completely exposed from the mixing pile, manipulating the second power head to move away from the foundation by the control device, so that the second power head can drive the first drill rod and the second drill rod to move toward the outside of the mixing pile, and this process continues until the second drill rod is completely moved out of the mixing pile, disassembling the second drill rod from the first drill rod, and connecting the first drill rod with the first power head, after the second drill rod is completely moved out of the mixing pile, separating the second drill rod from the first drill rod, and then assembling and connecting the first drill rod with the first power head, and driving the first power head to move until the first drill rod is completely exposed from the mixing pile;

[0020] Step 4: Control the first power head through the control device so that the first power head drives the first drill rod to move until the first drill rod is completely exposed from the mixing pile, the second drill rod is disassembled from the first drill rod, and the first drill rod is assembled and connected with the first power head. Specifically, the second drill rod is first disassembled from the first drill rod, and then the control device controls the walking device to move under the limiting action of the limiting device, so that the tower moves, and then the position of the first drill rod is aligned with the position of the first power head, and then the first drill rod is assembled and connected with the first power head;

[0021] Step 5: When the tower on the top is stacked higher, the weight of the tower will be higher. At this time, the downward force of the tower squeezes the bottom connecting head through the walking device, so that the bottom connecting head squeezes the load-bearing spring downward. At the same time, the bottom connecting head drives the oblique connecting column to move downward and rotate, so that the oblique connecting column drives the protruding load-bearing blocks on both sides to move away from each other, so that the protruding load-bearing blocks extend out. At this time, the spring 2 in the protruding load-bearing block drives the long strip to move downward until the ball bearings at the bottom of the long strip touch the ground, so that the ball bearings can play a vertical support role and move smoothly laterally at the same time. The more the protruding load-bearing blocks extend, the more balls touch the ground, so that when the tower is stacked higher, there will be more lateral support.

[0022] Compared with the prior art, the bidirectional cutting and mixing pile machine and method for quickly connecting and disconnecting a drill rod provided by the present invention have the following beneficial effects:

[0023] 1. The bidirectional cutting and mixing pile machine and method for quickly connecting and disassembling drill rods, by providing a detachable and connectable first drill rod and a second drill rod, can ensure the completion of the construction by assembling and relaying the two-section first drill rod and the second drill rod when the predetermined depth of the mixing pile is large. Of course, due to the assembly and construction of the two-section first drill rod and the second drill rod, the height of the first drill rod and the second drill rod exposed to the foundation after assembly can be controlled, for example, it can meet the requirement of not more than 35m in height, thereby improving safety and meeting the requirements of relevant policies.

[0024] 2. The bidirectional cutting and mixing pile machine and method for quickly connecting and disassembling drill rods, because the first drill rod and the second drill rod are detachable, the length of a single drill rod can be shortened, which is convenient for transportation and storage. This reduces the space occupied during transportation and also reduces transportation costs, and is particularly suitable for projects with large depth requirements.

[0025] 3. The bidirectional cutting and mixing pile machine and method for quickly connecting and removing drill rods, when the top tower is stacked higher, the weight of the tower will be higher. At this time, the downward force of the tower squeezes the bottom connecting head through the walking device, so that the bottom connecting head squeezes the load-bearing spring downward, and at the same time, the bottom connecting head drives the oblique connecting column to move downward and rotate, so that the oblique connecting column drives the protruding load-bearing blocks on both sides to move away from each other, so that the protruding load-bearing blocks extend out, and at this time, the spring 2 in the protruding load-bearing block drives the long strip block to move downward until the ball bearings at the bottom of the long strip block contact with the ground, so that the ball bearings can play a vertical support role and can move smoothly laterally at the same time. The more the protruding load-bearing blocks extend, the more balls contact with the ground, so that when the tower is stacked higher, the more lateral support there is.

[0026] 4. The bidirectional cutting and mixing pile machine and method for quickly connecting and disassembling drill rods, when the extended load-bearing blocks move away from each other, the extended load-bearing blocks drive the guide heads away from each other, and the guide heads drive the guide blocks towards each other through the intermediate connecting strips, so that the extended load-bearing blocks can move laterally stably. The hinged design of the intermediate connecting strip allows the angle between the guide head and the guide block to change, but always keeps the force uniform. When the extended load-bearing block moves, the intermediate connecting strip transfers the force to the guide block, while offsetting the irregular torque that may be generated during the movement, further stabilizing the motion trajectory. This linkage mechanism enables the moving direction and distance of the extended load-bearing block to be accurately guided, avoiding the instability or asynchronism caused by load or external force. The lateral movement of the extended load-bearing block is controllable, stable and accurate, effectively avoiding the shaking or dislocation problems caused by irregular movement or uneven force, which not only improves the overall reliability of the equipment, but also ensures the safety of the stacking tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0028] Figure 1 This is a structural schematic diagram of a front view of a bidirectional cutting and mixing pile machine and method for quickly connecting and disconnecting a drill rod proposed by the present invention;

[0029] Figure 2 It is a structural schematic diagram of a left view of a bidirectional cutting and mixing pile machine and method for quickly connecting and disconnecting a drill rod proposed by the present invention;

[0030] Figure 3 It is a schematic structural diagram of a top view of a bidirectional cutting and mixing pile machine and method for quickly connecting and disconnecting a drill rod proposed by the present invention;

[0031] Figure 4A bidirectional cutting and mixing pile machine and method for quickly connecting and disconnecting drill rods proposed by the present invention Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0032] Figure 5 A schematic diagram of the assembly structure of a tower, a first guide rail, a second guide rail, a first power head and a second power head of a bidirectional cutting and mixing pile machine and method for quickly connecting and disconnecting a drill rod proposed by the present invention;

[0033] Figure 6 It is a structural schematic diagram of the extending mechanism of a bidirectional cutting and mixing pile machine and method for quickly connecting and disconnecting a drill rod proposed by the present invention;

[0034] Figure 7 It is a structural schematic diagram of a load-bearing spring of a bidirectional cutting and mixing pile machine and method for quickly connecting and disconnecting a drill rod proposed by the present invention;

[0035] Figure 8 It is a structural schematic diagram of a stabilizing mechanism of a bidirectional cutting and mixing pile machine and method for quickly connecting and disconnecting a drill rod proposed by the present invention;

[0036] Fig. 9 A schematic diagram of the structure of a bidirectional cutting and mixing pile machine and method for quickly connecting and disconnecting a drill rod, wherein a load-bearing block is extended;

[0037] Fig.10 It is a structural schematic diagram of a bidirectional cutting and mixing pile machine and a method for strengthening the mechanism of a quick connection and removal of a drill rod proposed by the present invention;

[0038] Fig.11 Flow chart of a method for quickly connecting and disconnecting a drill pipe in some embodiments of the present application.

[0039] In the figure: 100, walking device; 101, limiting device; 110, control device; 200, tower; 201, first guide rail; 202, second guide rail; 203, suspension device; 210, first power head; 211, first drill rod; 220, second power head; 221, second drill rod; 310, hinged part; 320, support column; 410, cage stirring shaft; 420, fixed axis gear train reversing rotation device; 430, drill bit; 8, extension Outgoing mechanism; 81. Upper connecting plate; 82. Telescopic rod; 83. Load-bearing square block; 84. Bottom load-bearing seat; 85. Side limit plate; 86. Bottom connecting head; 87. Load-bearing spring; 88. Extending load-bearing block; 89. Oblique connecting column; 9. Stabilizing mechanism; 91. Guide strip; 92. Guide block; 93. Middle connecting strip; 94. Guide head; 95. Spring 1; 7. Strengthening mechanism; 71. Spring 2; 72. Long strip; 73. Ball. DETAILED DESCRIPTION

[0040] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present disclosure unless otherwise specifically stated.

[0041] Those skilled in the art can understand that the terms "first", "second" and the like in the embodiments of the present disclosure are only used to distinguish different steps, devices or modules, etc., and neither represent any specific technical meaning nor represent the necessary logical order between them. It should also be understood that in the embodiments of the present disclosure, "multiple" can refer to two or more, and "at least one" can refer to one, two or more. It should also be understood that for any component, data or structure mentioned in the embodiments of the present disclosure, in the absence of explicit limitation or contrary revelation given in the context, it can generally be understood as one or more. In addition, the term "and / or" in the present disclosure is only a description of the association relationship of the associated objects, indicating that there can be three relationships, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in the present disclosure generally indicates that the associated objects before and after are an "or" relationship. It should also be understood that the description of each embodiment in the present disclosure emphasizes the differences between the embodiments, and the same or similar parts can refer to each other. For the sake of brevity, they will not be repeated one by one.

[0042] At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present disclosure and its application or use. The techniques, methods and devices known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the techniques, methods and devices should be considered part of the specification. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0043] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0044] First embodiment

[0045] See also Figure 1-Figure 11A bidirectional cutting and mixing pile machine for quickly connecting and removing drill rods comprises: a walking device 100, which is used to drive the device to move on the foundation; a tower frame 200, which is arranged on the walking device 100 and is used to provide support; a connecting device, a connecting device is arranged between the tower frame 200 and the walking device 100, and the tower frame 200 is connected to the walking device 100 through the connecting device; a stirring device, which comprises a cage stirring shaft 410, a fixed-axis gear train reversing rotation device 420 and a drill bit 430, and the stirring device is used to perform bidirectional cutting and bidirectional stirring on the soil layer in the stirring pile; an extending mechanism 8, which is arranged at the bottom of the walking device 100 and is used to provide more stable support when the tower frame 200 is higher; a stabilizing mechanism 9, which is used to provide more stable lateral support for the extending mechanism 8; a strengthening mechanism 7, which is used to provide a stepped support effect.

[0046] The tower 200 is provided with a first power head 210 and a second power head 220, wherein the first power head 210 and the second power head 220 can both reciprocate along the length direction of the tower 200, the first power head 210 is provided with a first drill rod 211, and the second power head 220 is provided with a second drill rod 221. The first power head 210 can drive the first drill rod 211 to move relative to the foundation by moving on the tower 200, thereby realizing construction on the foundation through the first drill rod 211 and forming a mixing pile. Similarly, the second power head 220 can also drive the second drill rod 221 to move relative to the foundation by moving on the tower 200, thereby realizing construction on the foundation through the second drill rod 221 and forming a mixing pile. The tower 200 is provided with a first guide rail 201 and a second guide rail 202, and the first guide rail 201 and the second guide rail 202 are connected. The two guide rails 202 are arranged parallel to each other, and the first guide rail 201 and the second guide rail 202 are both extended along the length direction of the tower 200. The first power head 210 is arranged on the first guide rail 201, so that the first power head 210 can move along the first guide rail 201, and the second power head 220 is arranged on the second guide rail 202, so that the second power head 220 can move along the second guide rail 202. A suspension device 203 is provided at the end of the tower 200 away from the foundation, and the suspension device 203 is used to suspend the first power head 210 and the second power head 220. It can be understood that through the arrangement of the suspension device 203 and the first guide rail 201 and the second guide rail 202, the stability of the movement of the first power head 210 and the second power head 220 can be improved, so that the first drill rod 211 and the second drill rod 221 can be more secure in constructing the foundation.

[0047] A control device 110 is provided on the walking device 100, and the control device 110 can control the walking device 100 to work, adjust the vertical angle of the tower 200 relative to the foundation, the first power head 210 to work, and the second power head 220 to work, so as to facilitate the use of the two-way cutting and mixing pile machine. When it is necessary to carry out construction on the foundation and form mixing piles, the walking device 100 can be manipulated to move to the area to be drilled through the control device 110. At the same time, the control device 110 can be manipulated to adjust the vertical angle of the tower 200 relative to the foundation, for example, adjust the tower 200 to be perpendicular to the foundation. The control device 110 can also manipulate the first power head 210 and the second power head 220 to move to the top of the tower 200, so that the two-way cutting and mixing pile machine as a whole can be in a waiting state. When the first drill rod 211 is installed on the first power head 210 and the second drill rod 221 is installed on the second power head 220 After that, the construction of the foundation can be started: the control device 110 controls the first power head 210 to work, so that the first power head 210 drives the first drill rod 211 to move toward the foundation surface, and then the first drill rod 211 constructs the foundation and forms a mixing pile. As the first power head 210 continues to drive the first drill rod 211 to move, the depth of the mixing pile can be gradually increased. It is worth mentioning that after at least a part of the first drill rod 211 is drilled into the foundation to form a mixing pile, the first drill rod 211 and the first power head 210 can be disassembled, and then the control device 110 controls the walking device 100 to move so that the position of the tower 200 is moved, so that the second drill rod 221 on the second power head 220 can be aligned with the first drill rod 211, that is, the second drill rod 221 can remain coaxial with the first drill rod 211, and then the second drill rod 221 can be connected to the second drill rod 221;Afterwards, the control device 110 controls the second power head 220 to work, so that the second power head 220 can drive the first drill rod 211 and the second drill rod 221 to work as a whole to construct the foundation, so that the mixing pile can reach a predetermined depth. Further preferably, the first drill rod 211 can be disassembled from the first power head 210 and connected to the second power head 220 when the first drill rod 211 reaches the maximum depth of its drilling. It can be understood that by setting the detachable and connectable first drill rod 211 and second drill rod 221, when the predetermined depth of the mixing pile is large, the completion of the construction can be ensured by the assembly relay of the two-stage first drill rod 211 and the second drill rod 221. Of course, due to the assembly construction of the two-stage first drill rod 211 and the second drill rod 221, the height of the first drill rod 211 and the second drill rod 221 exposed to the foundation as a whole after assembly can be controlled. For example The requirement of not more than 35m in height can be met, and the requirements of relevant policies are met while improving safety. When the mixing pile reaches the predetermined depth, the control device 110 controls the second power head 220 to move in the opposite direction, so that the second power head 220 drives the first drill rod 211 and the second drill rod 221 to move toward the outside of the mixing pile. During this process, when the second drill rod 221 is completely exposed outside the mixing pile, the second drill rod 221 is disassembled from the first drill rod 211, and then the control device 110 controls the walking device 100 to move, so that the tower 200 moves, and then the first power head 210 is aligned with the first drill rod 211, and the first power head 210 is connected to the first drill rod 211. The control device 110 controls the first power head 210 to move in the opposite direction, so that the first power head 210 drives the first drill rod 211 to move toward the outside of the mixing pile until the first drill rod 211 is completely removed from the mixing pile. ;

[0048] The connecting device includes a hinge part 310 and a support column 320. The hinge part 310 is used to realize the relative rotation between the tower 200 and the walking device 100, so that the control device 110 can manipulate and adjust the vertical angle of the tower 200 relative to the foundation. The support column 320 is used to provide appropriate supporting force for the tower 200 so that the tower 200 can work stably and safely.

[0049] The first drill rod 211 is provided with a cage-type stirring shaft 410, the first drill rod 211 is provided with a fixed-axis gear train reversing rotation device 420, and the first drill rod 211 is provided with a drill bit 430. It can be understood that the cage-type stirring shaft 410 is composed of a stirring shaft, inner stirring teeth, outer stirring teeth and a stirring frame, wherein the inner stirring teeth are arranged on the stirring shaft, and the outer stirring teeth are arranged on the stirring frame. When the first power head 210 drives the first drill rod 211 to rotate, the fixed-axis gear train reversing rotation device 420 will cause the inner gear and the outer gear to rotate in opposite directions respectively, thereby being able to perform bidirectional cutting on the soil layer in the mixing pile. Cutting and two-way stirring, taking the example that the first drill rod 211 works before the second drill rod 221, the first drill rod 211 directly plays the role of drilling down and forming a stirring pile, therefore, a cage stirring shaft 410, a fixed axis gear train reversing rotation device 420 and a drill bit 430 are arranged on the first drill rod 211, if the scheme that the second drill rod 221 works before the first drill rod 211 is adopted, since the second drill rod 221 directly plays the role of drilling down and forming a stirring pile, the cage stirring shaft 410, the fixed axis gear train reversing rotation device 420 and the drill bit 430 are all arranged on the second drill rod 221, and no special limitation is made to this.

[0050] A limiting device 101 is provided on the walking device 100, and the limiting device 101 is located on both sides of the walking device 100. The limiting device 101 is used to limit the walking device 100 in the direction of the horizontal line connecting the first power head 210 and the second power head 220, so that the maximum moving distance of the walking device 100 in the direction of the horizontal line connecting the first power head 210 and the second power head 220 is constant, and the limiting distance of the walking device 100 by the limiting device 101 is equal to the horizontal distance between the axis of the first drill rod 211 and the axis of the second drill rod 221. When the first drill rod 211 reaches its maximum drilling depth, the first drill rod 211 is disassembled from the first power head 210, and at this time, the control device 110 controls the walking device 100 to move, wherein the moving direction of the walking device 100 is the direction of the horizontal line connecting the first power head 210 and the second power head 220. In this process, when the walking device 100 moves to the direction where it is limited by the limiting device 101, the second power head 220 is moved to the direction where the first drill rod 211 is moved to the direction where ... The second drill rod 221 on the power head 220 is aligned with the first drill rod 211, so that the first drill rod 211 and the second drill rod 221 can be assembled and connected. When the second power head 220 drives the first drill rod 211 and the second drill rod 221 to move toward the outside of the mixing pile, when the second drill rod 221 is completely exposed outside the mixing pile, the second drill rod 221 and the first drill rod 211 are disassembled. At this time, the control device 110 controls the walking device 100 to move in the opposite direction of the horizontal line connecting the first power head 210 and the second power head 220. In this process, when the walking device 100 moves to be limited by the limiting device 101, the first power head 210 is aligned with the first drill rod 211, so that the first drill rod 211 and the first power head 210 can be assembled and connected. Through the setting of the limiting device 101, the alignment accuracy of the first drill rod 211 and the second drill rod 221 and the alignment accuracy of the first drill rod 211 and the first power head 210 can be better improved.

[0051] The extending mechanism 8 includes an upper connecting plate 81, which is arranged at the bottom of the walking device 100. When the walking device 100 is not needed to move, the upper connecting plate 81 of the extending mechanism 8 is fixed to the bottom of the walking device 100, and the bottom of the upper connecting plate 81 is fixedly connected to one end of a telescopic rod 82, and the other end of the telescopic rod 82 is fixedly connected to a load-bearing square block 83, and the bottom of the load-bearing square block 83 is fixedly connected to a bottom load-bearing seat 84, and the outer wall of the bottom load-bearing seat 84 is fixedly connected to a side limit plate 85, and the bottom of the upper connecting plate 81 is fixedly connected to a bottom connecting head 86, and the bottom connecting The bottom of the joint 86 is fixedly connected to one end of a load-bearing spring 87, the other end of the load-bearing spring 87 is fixedly connected to a protruding load-bearing block 88, the top of the protruding load-bearing block 88 is hinged to one end of an oblique connecting column 89, the other end of the oblique connecting column 89 is hinged to the inner wall of the bottom connecting head 86, and a reinforcing mechanism 7 is provided on the inner wall of the protruding load-bearing block 88. The reinforcing mechanism 7 includes a spring 2 71, one end of the spring 2 71 is fixedly connected to the inner wall of the protruding load-bearing block 88, the other end of the spring 2 71 is fixedly connected to a long strip block 72, and the outer wall of the long strip block 72 is rotatably connected to a ball bearing 73.

[0052] The side of the bottom load-bearing seat 84 is provided with an inclined surface, and the outer wall of the extended load-bearing block 88 is slidably connected with the inner wall of the side limit plate 85. A plurality of strengthening mechanisms 7 are provided, and the strengthening mechanisms 7 are arranged in an array. When the tower 200 on the top is stacked higher, the weight of the tower 200 will be higher. At this time, the downward force of the tower 200 squeezes the bottom connecting head 86 through the walking device 100, so that the bottom connecting head 86 squeezes the load-bearing spring 87 downward. At the same time, the bottom connecting head 86 drives the oblique connecting column 89 to move downward and rotate, so that the oblique connecting column 89 drives the extended load-bearing blocks 88 on both sides to move away from each other, so that the extended load-bearing blocks 88 extend out. At this time, the spring 2 71 in the extended load-bearing block 88 drives the long strip block 72 to move downward until the ball 73 at the bottom of the long strip block 72 contacts the ground, so that the ball 73 can play a vertical support role and can move smoothly laterally. The more the load-bearing block 88 is extended, the more balls 73 contact the ground, so that when the tower 200 is stacked higher, there is more lateral support, thereby ensuring the working stability of the equipment. This design uses gravity changes to automatically adjust the support range without manual intervention. When the stacking height increases, the number and distribution of the balls 73 will increase accordingly, ensuring a larger contact area and support range to meet the needs of different working conditions.

[0053] A stabilizing mechanism 9 is provided at the top of the bottom load-bearing seat 84, and the stabilizing mechanism 9 includes a guide bar 91, which is fixedly connected to the top of the bottom load-bearing seat 84, and a guide block 92 is slidably connected to the top of the guide bar 91, and the outer wall of the guide block 92 is hinged with one end of an intermediate connecting bar 93, and the other end of the intermediate connecting bar 93 is hinged with a guide head 94, and the guide head 94 is fixedly connected to the outer wall of the extended load-bearing block 88, and the outer wall of the load-bearing square block 83 is fixedly connected with one end of a spring 95, and the other end of the spring 95 is fixedly connected to the outer wall of the guide block 92. When the extended load-bearing blocks 88 move away from each other, the extended load-bearing blocks 88 drive the guide heads 94 to move away from each other, and the guide heads 94 drive the guide blocks 92 to move closer to each other through the intermediate connecting bar 93, so that the extended load-bearing blocks 88 8 Stable lateral movement. The hinged design of the middle connecting bar 93 allows the angle between the guide head 94 and the guide block 92 to change, but always keeps the force uniform. When the extended load-bearing block 88 moves, the middle connecting bar 93 transfers the force to the guide block 92, and at the same time offsets the irregular torque that may be generated during the movement, thereby further stabilizing the movement trajectory. This linkage mechanism enables the movement direction and distance of the extended load-bearing block 88 to be accurately guided, avoiding the instability or asynchronism caused by load or external force. The lateral movement of the extended load-bearing block 88 is controllable, stable and precise, effectively avoiding the shaking or dislocation problems caused by irregular movement or uneven force, which not only improves the overall reliability of the equipment, but also ensures the safety of the stacking tower 200.

[0054] Embodiment 2

[0055] On the basis of the first embodiment, the second embodiment of the present application provides a method for using a bidirectional cutting and mixing pile machine for quickly connecting and disconnecting a drill rod, comprising the following steps:

[0056] Step 1: Move the bidirectional cutting and mixing pile machine to the area to be drilled and adjust the bidirectional cutting and mixing pile machine to a standby state, control the walking device 100 to move to the area to be drilled, and control the bidirectional cutting and mixing pile machine to a standby state through the control device 110, drive the first power head 210 to drive the first drill rod 211 to mix piles on the foundation, and control the first power head 210 through the control device 110 so that the first power head 210 drives the first drill rod 211 to rotate and move forward in the direction of the foundation, so that the first drill rod 21 1. Construct and form a mixing pile on the foundation. When the first drill rod 211 reaches the maximum depth, the first drill rod 211 is removed from the first power head 210 and connected to the second drill rod 221. When the first drill rod 211 reaches the maximum depth of its drilling, the first drill rod 211 is removed from the first power head 210, and the first drill rod 211 is assembled and connected with the second drill rod 221. The second power head 220 is driven to drive the first drill rod 211 and the second drill rod 221 to mix and form a pile on the foundation until the mixing pile reaches the predetermined depth. By controlling The device 110 controls the second power head 220 so that the second power head 220 drives the first drill rod 211 and the second drill rod 221 to continue to perform the mixing pile operation on the foundation until the mixing pile reaches a predetermined depth, and the first drill rod 211 and the second drill rod 221 are recovered by the first power head 210 and the second power head 220. The first power head 210 and the second power head 221 are finally recovered from the mixing pile by the control device 110, so that the first drill rod 211 and the second drill rod 221 are removed from the mixing pile. ; Adjusting the bidirectional cutting and mixing pile machine to be in a ready-to-work state specifically includes: adjusting the verticality of the tower 200 relative to the foundation through the control device 110, manipulating the first power head 210 to move to the end of the tower 200 away from the foundation through the control device 110, manipulating the second power head 220 to move to the end of the tower 200 away from the foundation through the control device 110, and installing the first drill rod 211 and the second drill rod 221 on the first power head 210 and the second power head 220 respectively, so that the bidirectional cutting and mixing pile machine is in a working state;

[0057] Step 2: disassembling the first drill rod 211 from the first power head 210 and connecting it with the second drill rod 221 specifically includes: after disassembling the first drill rod 211 from the first power head 210, the control device 110 controls the walking device 100 to move under the limiting action of the limiting device 101, so that the position of the first drill rod 211 can be aligned with the position of the second drill rod 221, and then the first drill rod 211 and the second drill rod 221 are assembled and connected;

[0058] Step 3: Recovering the first drill rod 211 and the second drill rod 221 by the first power head 210 and the second power head 220 specifically includes: driving the second power head 220 to move until the second drill rod 221 is completely exposed from the mixing pile, manipulating the second power head 220 to move away from the foundation by the control device 110, so that the second power head 220 can drive the first drill rod 211 and the second drill rod 221 to move toward the outside of the mixing pile, and this process continues until the second drill rod 221 is completely moved out of the mixing pile, disassembling the second drill rod 221 from the first drill rod 211, and connecting the first drill rod 211 to the first power head 210, after the second drill rod 221 is completely moved out of the mixing pile, separating the second drill rod 221 from the first drill rod 211, and then assembling and connecting the first drill rod 211 to the first power head 210, and driving the first power head 210 to move until the first drill rod 211 is completely exposed from the mixing pile;

[0059] Step 4: Control the first power head 210 through the control device 110 so that the first power head 210 drives the first drill rod 211 to move until the first drill rod 211 is completely exposed from the mixing pile, the second drill rod 221 is disassembled from the first drill rod 211, and the first drill rod 211 is assembled and connected with the first power head 210. Specifically, the second drill rod 221 is disassembled from the first drill rod 211, and then the control device 110 controls the walking device 100 to move under the limiting action of the limiting device 101, so that the tower 200 moves, and then the position of the first drill rod 211 is aligned with the position of the first power head 210, and then the first drill rod 211 is assembled and connected with the first power head 210;

[0060] Step 5: When the tower 200 on the top is stacked higher, the weight of the tower 200 will be higher. At this time, the downward force of the tower 200 squeezes the bottom connecting head 86 through the walking device 100, so that the bottom connecting head 86 squeezes the load-bearing spring 87 downward. At the same time, the bottom connecting head 86 drives the oblique connecting column 89 to move downward and rotate, so that the oblique connecting column 89 drives the protruding load-bearing blocks 88 on both sides to move away from each other, so that the protruding load-bearing blocks 88 extend out. At this time, the spring 2 71 in the protruding load-bearing block 88 drives the long strip block 72 to move downward until the ball 73 at the bottom of the long strip block 72 contacts the ground, so that the ball 73 can play a vertical support role while moving smoothly laterally. The more the protruding load-bearing block 88 extends, the more the ball 73 contacts the ground, so that when the tower 200 is stacked higher, the more lateral support there is.

[0061] The flow chart or block diagram in the accompanying drawings shows the possible architecture, function and operation of the equipment, method and computer program product according to various embodiments of the present application. In this regard, each box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flow chart, and the combination of the boxes in the block diagram and / or flow chart can be implemented with a dedicated system for hardware that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0062] The scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present application. Any reference signs in the claims should not be considered as limiting the claims involved. In addition, it is clear that the word "comprising" does not exclude other units or steps, and the singular does not exclude the plural. Multiple units or devices stated in the device claim can also be implemented by one unit or device through software or hardware. The words "first" and "second" are only used to distinguish the description, and do not indicate any particular order, nor can they be understood as indicating or implying relative importance. .

[0063] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily mention changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims, and the above embodiments should be regarded as exemplary and non-restrictive.

Claims

1. A bidirectional cutting and mixing pile machine for quickly connecting and removing drill rods, characterized in that: include: A walking device (100) is used to drive the device to move on the foundation; A tower (200), wherein the tower (200) is arranged on the walking device (100), and the tower (200) is used to provide support; A connecting device, wherein a connecting device is provided between the tower (200) and the traveling device (100), and the tower (200) is connected to the traveling device (100) via the connecting device; A stirring device, the stirring device comprising a cage-type stirring shaft (410), a fixed-axis gear train reversing rotation device (420) and a drill bit (430), the stirring device being used for bidirectional cutting and bidirectional stirring of soil layers in the stirring pile; An extension mechanism (8), the extension mechanism (8) being arranged at the bottom of the walking device (100) and used for providing more stable support when the tower (200) is higher; A stabilizing mechanism (9), wherein the stabilizing mechanism (9) is used to provide more stable lateral support for the extending mechanism (8); The strengthening mechanism (7) is used to provide a stepped support effect.

2. A bidirectional cutting and mixing pile machine for quickly connecting and disconnecting drill rods according to claim 1, characterized in that: The tower (200) is provided with a first power head (210) and a second power head (220); the first power head (210) is provided with a first drill rod (211); the second power head (220) is provided with a second drill rod (221); the tower (200) is provided with a first guide rail (201) and a second guide rail (202); the first guide rail (201) and the second guide rail (202) are arranged parallel to each other; the first guide rail (201) and the second guide rail (202) are both extended along the length direction of the tower (200); the first power head (210) is arranged on the first guide rail (201); the second power head (220) is arranged on the second guide rail (202); and a suspension device (203) is arranged at an end of the tower (200) away from the foundation.

3. A bidirectional cutting and mixing pile machine for quickly connecting and disconnecting drill rods according to claim 2, characterized in that: The walking device (100) is provided with a control device (110), and the control device 110 is capable of controlling the operation of the walking device 100, adjusting the vertical angle of the tower 200 relative to the foundation, and the operation of the first power head 210 and the operation of the second power head 220.

4. A bidirectional cutting and mixing pile machine for quickly connecting and disconnecting drill rods according to claim 3, characterized in that: The connecting device comprises a hinged portion (310) and a support column (320), wherein the hinged portion (310) is used to realize relative rotation between the tower (200) and the walking device (100), and the support column (320) is used to provide appropriate supporting force for the tower (200).

5. A bidirectional cutting and mixing pile machine for quickly connecting and disconnecting drill rods according to claim 4, characterized in that: The first drill rod (211) is provided with a cage-type stirring shaft (410), the first drill rod (211) is provided with a fixed-axis gear train reversing rotation device (420), and the first drill rod (211) is provided with a drill bit (430).

6. A bidirectional cutting and mixing pile machine for quickly connecting and disconnecting drill rods according to claim 5, characterized in that: The walking device (100) is provided with a limiting device (101), the limiting device (101) is located on both sides of the walking device (100), and the limiting device (101) is used to limit the walking device (100) in the direction of the horizontal line connecting the first power head (210) and the second power head (220), and the limiting distance of the walking device (100) by the limiting device (101) is equal to the horizontal distance between the axis of the first drill rod (211) and the axis of the second drill rod (221).

7. A bidirectional cutting and mixing pile machine for quickly connecting and disconnecting drill rods according to claim 6, characterized in that: The extending mechanism (8) comprises an upper connecting plate (81), the upper connecting plate (81) being arranged at the bottom of the walking device (100), the bottom of the upper connecting plate (81) being fixedly connected to one end of a telescopic rod (82), the other end of the telescopic rod (82) being fixedly connected to a load-bearing square block (83), the bottom of the load-bearing square block (83) being fixedly connected to a bottom load-bearing seat (84), the outer wall of the bottom load-bearing seat (84) being fixedly connected to a side limit plate (85), the bottom of the upper connecting plate (81) being fixedly connected to a bottom connecting head (86), the bottom of the bottom connecting head (86) being fixedly connected to one end of a load-bearing spring (87) The other end of the load-bearing spring (87) is fixedly connected to a protruding load-bearing block (88), the top of the protruding load-bearing block (88) is hinged with one end of an oblique connecting column (89), the other end of the oblique connecting column (89) is hinged on the inner wall of the bottom connecting head (86), and a strengthening mechanism (7) is arranged on the inner wall of the protruding load-bearing block (88), and the strengthening mechanism (7) includes a second spring (71), one end of the second spring (71) is fixedly connected to the inner wall of the protruding load-bearing block (88), and the other end of the second spring (71) is fixedly connected to a long strip block (72), and the outer wall of the long strip block (72) is rotatably connected to a ball (73).

8. A bidirectional cutting and mixing pile machine for quickly connecting and disconnecting drill rods according to claim 7, characterized in that: The side surface of the bottom load-bearing seat (84) is provided with an inclined surface, the outer wall of the protruding load-bearing block (88) is slidably connected to the inner wall of the side limit plate (85), and a plurality of strengthening mechanisms (7) are provided, and the strengthening mechanisms (7) are arranged in an array.

9. A bidirectional cutting and mixing pile machine for quickly connecting and disconnecting drill rods according to claim 8, characterized in that: A stabilizing mechanism (9) is provided at the top of the bottom load-bearing seat (84), and the stabilizing mechanism (9) comprises a guide bar (91), the guide bar (91) is fixedly connected to the top of the bottom load-bearing seat (84), the top of the guide bar (91) is slidably connected to a guide block (92), the outer wall of the guide block (92) is hinged with one end of an intermediate connecting bar (93), the other end of the intermediate connecting bar (93) is hinged with a guide head (94), the guide head (94) is fixedly connected to the outer wall of the extended load-bearing block (88), the outer wall of the load-bearing square block (83) is fixedly connected to one end of a spring (95), and the other end of the spring (95) is fixedly connected to the outer wall of the guide block (92).

10. A method for using a bidirectional cutting and mixing pile machine for quickly connecting and disconnecting a drill rod, characterized in that: A bidirectional cutting and mixing pile machine for quickly connecting and disconnecting a drill rod as described in any one of claims 1 to 9 includes the following steps: Step 1: Move the bidirectional cutting and mixing pile machine to the area to be drilled and adjust the bidirectional cutting and mixing pile machine to a standby state, operate the walking device (100) to move to the area to be drilled through the control device (110), and operate the bidirectional cutting and mixing pile machine to a standby state through the control device (110), drive the first power head (210) to drive the first drill rod (211) to mix and form piles on the foundation, operate the first power head (210) through the control device (110) so that the first power head (210) drives the first drill rod (211) to rotate and move forward in the direction of the foundation, so that the first drill rod (211) is on the foundation The mixing pile is constructed and formed. When the first drill rod (211) reaches the maximum depth, the first drill rod (211) is removed from the first power head (210) and connected to the second drill rod (221). When the first drill rod (211) reaches the maximum depth of its drilling hole, the first drill rod (211) is removed from the first power head (210), and the first drill rod (211) and the second drill rod (221) are assembled and connected. The second power head (220) is driven to drive the first drill rod (211) and the second drill rod (221) to mix and form the pile on the foundation until the mixing pile reaches the predetermined depth. The control device (110) controls the mixing pile to be formed. ) operating the second power head (220) so that the second power head (220) drives the first drill rod (211) and the second drill rod (221) to continue to perform a mixing pile operation on the foundation until the mixing pile reaches a predetermined depth, and recovering the first drill rod (211) and the second drill rod (221) through the first power head (210) and the second power head (220); operating the first power head (210) and the second power head (220) through the control device (110) to finally recover the first drill rod (211) and the second drill rod (221) in the mixing pile, so that the first drill rod (211) and the second drill rod (221) are removed from the mixing pile; The bidirectional cutting and mixing pile machine is in a ready-to-work state, specifically comprising: adjusting the verticality of the tower (200) relative to the foundation through the control device (110), manipulating the first power head (210) to move to the end of the tower (200) away from the foundation through the control device (110), manipulating the second power head (220) to move to the end of the tower (200) away from the foundation through the control device (110), and installing the first drill rod (211) and the second drill rod (221) on the first power head (210) and the second power head (220) respectively, thereby making the bidirectional cutting and mixing pile machine in a working state; Step 2: disassembling the first drill rod (211) from the first power head (210) and connecting it to the second drill rod (221) specifically comprises: after disassembling the first drill rod (211) from the first power head (210), the control device (110) controls the walking device (100) to move under the limiting action of the limiting device (101), so that the position of the first drill rod (211) can be aligned with the position of the second drill rod (221), and then assembling and connecting the first drill rod (211) and the second drill rod (221); Step 3: Recovering the first drill rod (211) and the second drill rod (221) by the first power head (210) and the second power head (220) specifically includes: driving the second power head (220) to move until the second drill rod (221) is completely exposed from the mixing pile, and controlling the second power head (220) to move away from the foundation by the control device (110), so that the second power head (220) can drive the first drill rod (211) and the second drill rod (221) to move toward the outside of the mixing pile, and this process continues until the second power head (220) moves away from the foundation. The second drill rod (221) is completely moved out of the mixing pile, the second drill rod (221) is disassembled from the first drill rod (211), and the first drill rod (211) is connected to the first power head (210). After the second drill rod (221) is completely moved out of the mixing pile, the second drill rod (221) is separated from the first drill rod (211), and the first drill rod (211) is assembled and connected to the first power head (210), and the first power head (210) is driven to move until the first drill rod (211) is completely exposed from the mixing pile; Step 4: controlling the first power head (210) through the control device (110) so that the first power head (210) drives the first drill rod (211) to move until the first drill rod (211) is completely exposed from the mixing pile, the second drill rod (221) is disassembled from the first drill rod (211), and the first drill rod (211) is assembled and connected with the first power head (210). Specifically, the second drill rod (221) is disassembled from the first drill rod (211), and then the control device (110) controls the walking device (100) to move under the limiting action of the limiting device (101), so that the tower (200) moves, and then the position of the first drill rod (211) is aligned with the position of the first power head (210), and then the first drill rod (211) is assembled and connected with the first power head (210); Step 5: When the towers (200) on the top are stacked higher, the weight of the towers (200) will be higher. At this time, the downward force of the towers (200) squeezes the bottom connector (86) through the walking device (100), so that the bottom connector (86) squeezes the load-bearing spring (87) downward. At the same time, the bottom connector (86) drives the oblique connecting column (89) to move downward and rotate, so that the oblique connecting column (89) drives the protruding load-bearing blocks (88) on both sides to move away from each other. The extending load-bearing block (88) extends outward, and the spring 2 (71) in the extending load-bearing block (88) drives the long block (72) to move downward until the ball (73) at the bottom of the long block (72) contacts the ground, so that the ball (73) plays a vertical supporting role and can move smoothly horizontally. The more the extending load-bearing block (88) extends out, the more the ball (73) contacts the ground, so that when the tower (200) is stacked higher, the more horizontal support is provided.