Rotary excavating drilling construction equipment and method

Abstract

The invention relates to the technical field of drilling tool accessories, in particular to rotary excavating drilling construction equipment and method.The rotary excavating drilling construction equipment comprises a rotary excavating machine and a rotary excavating structure, the rotary excavating machine is rotationally connected with a rotating shaft, and the rotating shaft is connected with the rotary excavating structure; the rotary drilling machine can drive the rotary drilling structure to rotate and / or lift through the rotating shaft; the rotary excavating structure comprises a rotary excavating piece and a shrink-proof wall protecting assembly fixed to the rotary excavating piece. The shrink-proof wall protecting assembly comprises a wall cylinder, a driving unit arranged in the wall cylinder and at least two wall stabilizing units, each wall stabilizing unit has a shrinking state and an expanding state, when the wall cylinder rotates, the wall stabilizing units have the trend of expanding outwards, and when the wall cylinder rotates, the wall stabilizing units extend outwards. Traditional rotary drilling construction equipment generally has the phenomenon of hole shrinkage after drilling operation is completed, and particularly solves the problems that the quality of a pile foundation is reduced and potential safety hazards are caused due to the fact that hole walls in soft soil, sludge or plastic soil stratums are prone to deformation.

Description

Technical Field

[0001] The invention relates to the technical field of drilling tool accessories, and in particular to rotary drilling construction equipment and a method. Background Art

[0002] As an efficient foundation treatment tool, rotary drilling equipment is widely used in pile foundation construction of infrastructure such as buildings, bridges, and roads. The core is the rotary drilling rig, which provides strong downward pressure and rotational power through the hydraulic system to drive the drill rod and drill bit to cut deep into the stratum. This equipment can cope with a variety of geological conditions, including clay, sand, rock, etc., providing strong support for infrastructure construction. The efficiency and environmental protection of rotary drilling technology have been widely recognized and applied.

[0003] However, traditional rotary drilling equipment generally has shrinkage after completing the drilling operation, which has a serious impact on the quality of the pile foundation and the progress of the project. The root cause of the shrinkage phenomenon lies in the interweaving influence of multiple factors. Especially in strata containing a large amount of soft soil, silt or plastic soil, the mechanical properties of the soil are poor and it is easy to be squeezed and deformed by external forces. When the drilling operation is in progress, the rotation and advancement of the drill will exert a certain pressure on the hole wall, causing the soil on the hole wall to squeeze into the hole, thereby forming a shrinkage hole. In some cases, the shrinkage hole may be so small that it cannot meet the design requirements, which will not only lead to a decrease in the bearing capacity of the pile foundation, but also may cause quality problems such as pile body tilting and fracture, seriously affecting the stability and safety of the engineering structure.

[0004] Therefore, in view of this, the inventor proposes a rotary drilling construction equipment and method to solve the above technical problems. Summary of the invention

[0005] One of the purposes of the present invention is to provide a rotary drilling construction equipment, which can solve the shrinkage phenomenon that is common in traditional rotary drilling construction equipment after completing the drilling operation, especially the quality degradation of pile foundation and safety hazards caused by the easy deformation of the hole wall in soft soil, silt or plastic soil strata; the second purpose is to propose a method.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is as follows: A rotary drilling construction equipment, comprising a rotary drilling machine and a rotary drilling structure, wherein the rotary drilling machine is rotatably connected to a rotating shaft, the rotating shaft is connected to the rotary drilling structure, and the rotary drilling machine can drive the rotary drilling structure to rotate and / or lift through the rotating shaft; The rotary drilling structure comprises a rotary drilling member and an anti-shrinkage wall protection component fixed on the rotary drilling member; The shrinkage-proof wall protection assembly comprises a wall tube, a driving unit arranged in the wall tube, and at least two wall stabilizing units, one end of the wall tube is connected to the rotating shaft, and the other end is connected to the rotary digging member; Each of the wall stabilizing units is evenly distributed on the outer periphery of the wall tube and is connected to the driving unit, and the driving unit is used to drive the position and angle of the wall stabilizing unit to change; The wall stabilizing unit has a contracted state and an expanded state. When the wall tube rotates, the wall stabilizing unit has a tendency to expand outwards.

[0007] According to the above technical solution, the working principle of the rotary drilling construction equipment mainly relies on the coordinated operation of the rotary drilling machine and the rotary drilling structure thereon. The rotary drilling machine, as a power source, is closely connected to the rotary drilling structure through a rotating shaft and can drive the rotary drilling structure to rotate and lift. During the operation, the rotary drilling machine starts, and the rotary drilling structure is driven to rotate as a whole through the rotating shaft. The core component of the rotary drilling structure is the rotary drilling piece, which directly participates in the rotary drilling work. At the same time, the anti-shrinkage wall protection component fixed on the rotary drilling piece also rotates with it.

[0008] The anti-shrinkage wall protection assembly is mainly composed of a wall tube, a driving unit and at least two wall stabilizing units. One end of the wall tube is connected to the rotating shaft, and the other end is connected to the rotary excavator, ensuring the stability of the entire assembly during rotation.

[0009] When the wall tube rotates, the wall stabilizing units installed above the rotary drilling parts begin to play a role. These wall stabilizing units have a tendency to expand outwards due to centrifugal force during the rotation process, and can be in close contact with the hole wall, thereby playing a role in supporting and stabilizing the hole wall. This outward expansion action allows the wall stabilizing units to quickly generate friction and close contact with the hole wall. This close fit not only enhances the support force of the wall stabilizing units on the hole wall, but also further increases the density of the hole wall through friction, which means that the soil particles are more tightly bound, thereby enhancing the strength and stability of the hole wall, effectively avoiding the occurrence of shrinkage. Even when the formation conditions are complex and the soil is easily deformed, the wall stabilizing units can rely on their outward expansion tendency and close fit to ensure the integrity and stability of the hole wall, laying a solid foundation for the subsequent pile foundation construction.

[0010] Furthermore, the driving unit includes a fixing ring, a sleeve and an angle conversion assembly, the fixing ring is fixedly arranged inside the wall tube, the sleeve is fixed on the fixing ring, the outer periphery of the sleeve is fixedly connected to a plurality of support rods, each of the support rods is movably connected to a mounting piece, and the mounting piece has a first state and a second state; each of the wall stabilizing units is fixedly arranged on a corresponding mounting piece, and the angle conversion assembly is connected to the mounting piece to drive the state of the mounting piece to change.

[0011] According to the above technical solution, during operation, the fixing ring is firmly arranged inside the wall tube to provide stable support for the entire assembly, and the sleeve is fixed on the fixing ring, and its outer periphery is movably connected to the mounting member through a plurality of support rods. This design enables the mounting member to be flexibly adjusted in angle within a certain range.

[0012] The mounting part has a first state and a second state, and the conversion between these two states is achieved by connecting with the angle conversion component. The angle conversion component can drive the mounting part to adjust the angle during the rotation process through a precise mechanical structure. This adjustment can be made according to the actual conditions such as the shape, inclination and soil conditions of the hole wall to ensure the close fit and effective support between the wall stabilizing unit and the hole wall.

[0013] Since the shape and inclination of the hole wall may vary due to different geological conditions, if the angle of the mounting piece is fixed, the wall stabilizing unit may not be able to fully fit the hole wall, thus affecting the grinding effect and the stability of the hole wall. By adjusting the angle of the mounting piece, the wall stabilizing unit can better adapt to the shape and inclination of the hole wall, ensuring its close contact with the hole wall, thereby improving the efficiency and quality of grinding. Secondly, changing the angle of the mounting piece helps to achieve all-round grinding of the hole wall. If the angle of the mounting piece is fixed, the wall stabilizing unit may only be able to grind a specific part of the hole wall, while ignoring other parts. By adjusting the angle of the mounting piece, the wall stabilizing unit can cover different positions of the hole wall during the rotation process, achieving all-round grinding of the hole wall, expanding the aperture, and further improving the stability and bearing capacity of the hole wall, and enhancing the supporting effect on the hole wall. Secondly, by adjusting the angle of the mounting piece, all-round grinding of the hole wall can be achieved, further improving the stability and bearing capacity of the hole wall. In addition, changing the angle of the mounting piece can also reduce resistance and vibration during drilling, and improve construction efficiency and quality.

[0014] Further, the angle conversion assembly includes a sliding rod, a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod are multiple in number, each of the first connecting rods is fixedly connected to the end of the sliding rod, the first connecting rod is movably connected to the corresponding second connecting rod, and the second connecting rod is movably connected to the mounting member; The sliding rod can slide along the axial direction of the sleeve to drive the mounting member to transform from the first state to the second state, or from the second state to the first state.

[0015] According to the above technical solution, the angle conversion assembly is a key component in the anti-shrinkage wall protection assembly, which realizes flexible adjustment of the angle of the mounting part through the coordinated action of the sliding rod, the first connecting rod and the second connecting rod.

[0016] During operation, the slide bar slides along the axial direction of the sleeve. This sliding action drives the movement of the first connecting rod fixedly connected to the slide bar. Since the first connecting rod is movably connected to the corresponding second connecting rod, the movement of the first connecting rod will drive the second connecting rod to change its angle. The other end of the second connecting rod is movably connected to the mounting piece, so as the angle of the second connecting rod changes, the mounting piece will also change its state. Specifically, when the slide bar slides forward, it drives the mounting piece to change from the first state to the second state; and when the slide bar slides backward, it drives the mounting piece to return from the second state to the first state. Through this design, the angle change component can accurately control the angle change of the mounting piece, thereby ensuring the close fit and effective support between the wall stabilizing unit and the hole wall, and improving the quality and efficiency of rotary drilling construction.

[0017] Furthermore, a first hinge ball is provided between the first connecting rod and the second connecting rod, and two first mounting grooves are provided on the first hinge ball, and the two first mounting grooves are arranged perpendicularly and crosswise with each other; a second hinge ball is provided between the second connecting rod and the mounting member, and two second mounting grooves are provided on the second hinge ball, and the two second mounting grooves are arranged perpendicularly and crosswise with each other; The end of the first connecting rod is provided with a first arc-shaped claw, both ends of the second connecting rod are provided with a second arc-shaped claw, and the mounting member is rotatably connected with a third arc-shaped claw; The first arc-shaped claw and one of the second arc-shaped claws extend into two corresponding first mounting grooves respectively, and the other second arc-shaped claw and the third arc-shaped claw extend into two corresponding second mounting grooves respectively.

[0018] In the shrinkage-proof wall protection component, the connection between the first connecting rod and the second connecting rod, and the connection between the second connecting rod and the mounting piece all adopt the design of hinged ball and arc-shaped claw.

[0019] Specifically, a first arc-shaped claw is provided at the end of the first connecting rod, and it extends into two vertical and intersecting first mounting grooves provided on the first hinge ball. At the same time, second arc-shaped claws are provided at both ends of the second connecting rod, one of which extends into the first mounting groove of the first hinge ball, and together with the first arc-shaped claw, realizes the movable connection between the first connecting rod and the second connecting rod; the other second arc-shaped claw extends into two vertical and intersecting second mounting grooves provided on the second hinge ball.

[0020] The third arc-shaped claw rotatably connected to the mounting member extends into the second mounting groove of the second hinge ball, thereby realizing the movable connection between the second connecting rod and the mounting member.

[0021] Through this design, the angles between the first connecting rod, the second connecting rod and the mounting part can be flexibly changed, ensuring that the wall stabilizing unit can fit closely to the hole wall during the rotary drilling process, thereby improving construction quality and efficiency.

[0022] Compared with the traditional hinge method, the hinge ball and arc claw connection design adopted by the present invention has significant advantages in terms of freedom. Traditional hinges can usually only achieve rotation in a single direction, which limits the flexibility of the connection. In the present invention, the cooperation between the vertical cross mounting grooves on the first and second hinge balls and the arc claws enables the first connecting rod and the second connecting rod, and the second connecting rod and the mounting member to achieve flexible rotation in multiple directions, greatly increasing the freedom of the connection. This design enables the anti-shrinkage wall protection assembly to better adapt to the changes in the hole wall during the rotary drilling process, thereby improving the flexibility and efficiency of the construction.

[0023] Furthermore, the rotary drilling member includes a drill barrel and a drill cover, the drill cover is openably arranged at the bottom of the drill barrel, and a plurality of crushing heads are arranged on the drill cover; The drill cover is provided with a collecting groove which is in communication with the inner cavity of the drill tube; The drill tube is provided with a first rod, a second rod and a connecting hook, the drill cover is provided with a connecting block, and the connecting hook and the connecting block can be connected to or disconnected from each other; One end of the first rod is hinged to the top of the drill barrel, the other end of the first rod is hinged to one end of the second rod, the other end of the second rod is hinged to the connecting hook, the middle part of the connecting hook is hinged to the drill barrel, and a first pushing rod is provided on the first rod, and the first pushing rod is used to drive the angle of the connecting hook to change.

[0024] According to the above technical solution, the drill cover can be opened and closed at the bottom of the drill barrel, and the crushing head installed thereon is used to crush the soil. During the rotary excavation process, the soil is crushed and enters the inner cavity of the drill barrel, and is collected by the collecting trough at the same time. When the chip removal soil in the collecting trough reaches a preset amount, the first push rod is operated to drive the first rod and the second rod to perform linkage. This linkage causes the angle of the connecting hook to change, thereby driving the connecting block on the drill cover to open the drill cover relative to the drill barrel. At this time, the drill barrel can be lifted and the soil in the collection trough can be poured out. After the soil is poured out, the drill cover is closed, and the rotary excavation unit can continue to go deep into the hole for rotary excavation. The rotary excavation unit can efficiently crush, collect and process the soil, thereby improving construction efficiency.

[0025] Further, a mounting ring is fixedly arranged in the wall tube, a driving member is arranged on the mounting ring, and the driving member is used to drive the slide bar to rise or fall, and / or, The first push rod is driven to rise or fall.

[0026] Furthermore, a first hinged rod is hinged on the top of the sliding rod, a second hinged rod is hinged on the first hinged rod, a fixing bar is provided in the middle of the first hinged rod, the first hinged rod is rotatably connected to the fixing bar, the fixing bar is fixed inside the wall tube, a second hinged rod is connected to a second push rod, and the second push rod is connected to the driving member.

[0027] According to the above technical solution, a driving member is installed on a fixed mounting ring inside the wall tube, and the driving member has dual functions: one is to drive the slide bar to rise or fall to adjust the angle of the anti-shrinkage wall protection assembly; the other is to drive the first push rod to rise or fall to control the opening and closing of the drill cover of the rotary drilling member. To achieve the driving of the slide bar, the top of the slide bar is hinged with a first hinged rod, and the middle part of the first hinged rod is rotatably connected to the inside of the wall tube through a fixed strip to form a stable support structure. The other end of the first hinged rod is hinged with a second hinged rod, and the second hinged rod is connected to a second push rod, which is directly connected to the driving member.

[0028] When the driving member is started, it pushes the second hinged rod through the second push rod, thereby driving the first hinged rod to rotate around the fixed bar. This rotational movement is ultimately converted into the rising or falling movement of the slide bar, thereby achieving precise adjustment of the angle of the anti-shrinkage wall protection component. At the same time, the driving member can also directly drive the first push rod to control the opening and closing of the drilling cover of the rotary drilling member, thereby achieving multi-functional collaborative operation.

[0029] Furthermore, a first hinged rod is hinged on the top of the sliding rod, a second hinged rod is hinged on the first hinged rod, a fixing bar is provided in the middle of the first hinged rod, the first hinged rod is rotatably connected to the fixing bar, the fixing bar is fixed inside the wall tube, the second hinged rod is connected to the first push rod, and the first push rod is connected to the driving member.

[0030] According to the above technical solution, inside the wall tube, the top of the slide rod is cleverly hinged with a first hinge rod, and this design enables the movement of the slide rod to be transmitted through the hinge relationship. The middle part of the first hinge rod is rotatably connected to the fixed bar fixed inside the wall tube, forming a stable rotation fulcrum.

[0031] The other end of the first hinged rod is hinged with the second hinged rod, and this connection relationship enables the movement of the first hinged rod to be further transmitted to the second hinged rod. Importantly, the second hinged rod is connected to the first push rod, and the first push rod is directly connected to the drive member.

[0032] When the driving member is activated, it applies a thrust or pull to the second hinged rod through the first push rod, which is then transmitted to the first hinged rod through the second hinged rod, and then converted into the upward or downward movement of the slide rod through the rotation relationship between the first hinged rod and the fixed bar. Through this ingenious articulation and driving design, precise control of the angle of the slide rod and the anti-shrinkage wall protection component is achieved.

[0033] Furthermore, the wall stabilizing unit includes a column rod, a drill bar and a mounting seat fixed at both ends of the column rod, the two mounting seats are connected to the mounting piece, a first mounting bar, a second mounting bar and a third mounting bar are arranged between the column rod and the wall stabilizing drill piece, the first mounting bar and the second mounting bar are arranged in parallel, a ring is slidably arranged on the column rod, and a tension spring is arranged between the ring and one of the mounting seats; one end of the third mounting bar is hinged to the ring, and the other end of the third mounting bar is hinged to the middle position of the second mounting bar.

[0034] According to the above technical solution, the wall stabilizing unit is firmly connected to the mounting member through the mounting seat, and the sleeve ring slidably arranged on the column rod makes the wall stabilizing unit as a whole shrink under the action of the tension spring. When the rotary drilling equipment starts working, the wall stabilizing unit rotates with the drill rod.

[0035] During the rotation process, due to the centrifugal force, the wall stabilizing unit expands outward and comes into close contact with the hole wall. At this time, the first and second mounting bars between the column and the wall stabilizing drill piece provide stable support, while the third mounting bar allows the wall stabilizing unit to open appropriately under the centrifugal force through a hinged relationship.

[0036] The contact between the wall stabilizing unit and the hole wall further increases the density of the hole wall through friction, that is, the soil particles are more tightly bound. This design not only enhances the strength and stability of the hole wall, but also effectively prevents the hole wall from collapsing during the drilling process, and improves the accuracy and efficiency of rotary drilling.

[0037] A rotary drilling construction method, comprising the rotary drilling construction equipment as described above, further comprising the following steps: Preparation steps: connect the rotary drilling machine, the rotary drilling structure and the rotating shaft, align the rotary drilling member of the rotary drilling structure with the position of the hole to be drilled, and ensure that the wall stabilizing unit of the anti-shrinkage wall protection assembly can extend into the hole to be drilled in the retracted state; Drilling start-up steps: Start the rotary drilling machine, drive the rotary drilling structure to rotate and lift by rotating the shaft, drive the rotary drilling parts to start rotary drilling, and inject grout into the hole at the same time; During the rotary drilling process, as the rotary drilling structure rotates, the wall stabilizing unit of the anti-shrinkage wall protection assembly changes from a contracted state to an expanded state under the action of centrifugal force, and comes into close contact with the hole wall to support and stabilize the hole wall; Adjustment step: driving the slide bar to slide axially along the sleeve periodically through a driving member provided on the rotary drilling machine, and then continuously adjusting the angle of the mounting member through an angle conversion assembly, so that the wall stabilizing unit is converted between the first state and the second state; Soil collection and processing steps: the soil collected by the rotary digging member during the drilling process is collected through the collection groove thereon. When the soil in the collection groove reaches a preset amount, the rotary digging member is lifted up, and the first push rod is driven by the driving member to open the drill cover. After dumping the soil, the drill cover is closed and the rotary digging operation is continued; Drilling completion steps: When the hole reaches the predetermined depth and diameter, stop the rotary drilling machine, lift the rotary drilling structure out of the hole, and complete the drilling operation.

[0038] Beneficial effects of the present invention: The rotary drilling construction equipment of the present invention adopts an innovative anti-shrinkage wall protection component design. The wall stabilizing unit in the anti-shrinkage wall protection component can expand outward with the rotation of the rotary drilling structure, closely fit the hole wall, and effectively prevent the shrinkage phenomenon. At the same time, the angle of the wall stabilizing unit changes periodically, which can better adapt to the hole wall shape under different geological conditions, further enhance the stability of the hole wall, not only reduce the resistance and vibration during the drilling process, but also improve the bearing capacity and density of the hole wall, laying a solid foundation for the subsequent pile foundation construction.

[0039] The angle conversion assembly and the connection design of the hinge ball and arc claw of the present application enable the wall stabilizing unit to flexibly adjust the angle, ensuring that it is always in close contact with the hole wall during the rotary drilling process, greatly enhancing the adaptability and flexibility of the equipment, enabling it to cope with various complex geological conditions and improve the accuracy and efficiency of drilling; in addition, through the dual-function design of the drive part, the integrated control of the angle adjustment of the anti-shrinkage wall protection assembly and the opening and closing of the rotary drilling cover is realized, further simplifying the operation process and reducing construction costs.

[0040] The crushing head design on the rotary drilling component of the present application can efficiently crush the soil. At the same time, the setting of the collecting trough effectively collects the chip soil generated during the drilling process. When the soil in the collecting trough reaches a preset amount, the drill cover can be opened and closed through simple operation to pour out the soil and continue to drill deeper into the hole for rotary drilling. This not only optimizes the soil crushing and chip removal effects, but also improves the continuous operation capacity of the equipment, ensuring the smooth progress of the construction progress. At the same time, the equipment also has the advantages of simple structure, easy operation, and low maintenance cost, which brings significant convenience and economic benefits to rotary drilling construction.

[0041] Other advantages, objectives and features of the present application will be described to some extent in the subsequent description, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present application. The objectives and other advantages of the present application can be achieved and obtained through the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of the overall structure of the rotary drilling construction equipment of the present invention; Figure 2 It is a schematic diagram of the rotary drilling structure of the rotary drilling construction equipment of the present invention; Figure 3 It is a partial exploded schematic diagram of the rotary drilling structure of the rotary drilling construction equipment of the present invention; Figure 4 This is a schematic diagram of the structure of a drive unit of the rotary drilling construction equipment of the present invention; Figure 5 The rotary drilling construction equipment of the present invention Figure 4 Schematic diagram of the split structure; Figure 6 It is a structural schematic diagram of a first state of a mounting member in the rotary drilling construction equipment of the present invention; Figure 7 It is a structural schematic diagram of the second state of the mounting member in the rotary drilling construction equipment of the present invention; Figure 8 The rotary drilling construction equipment of the present invention Figure 7 Schematic diagram of the explosion structure; Fig. 9 It is a structural schematic diagram of a rotary drilling member and an anti-shrinkage wall protection component in the rotary drilling construction equipment of the present invention; Fig.10 It is a schematic diagram of a first cross-sectional structure of a rotary drilling member and an anti-shrinkage wall protection assembly in the rotary drilling construction equipment of the present invention; Fig.11 A second cross-sectional structural diagram of the rotary drilling component and the anti-shrinkage wall protection component in the rotary drilling construction equipment of the present invention Fig.12 It is a third cross-sectional structural schematic diagram of the rotary drilling member and the anti-shrinkage wall protection assembly in the rotary drilling construction equipment of the present invention; Fig.13 It is a schematic structural diagram of the wall stabilizing unit in the rotary drilling construction equipment of the present invention.

[0043] Among them, the rotary drilling machine 1, the rotary drilling structure 2, the rotating shaft 3, the rotary drilling member 4, the drill tube 41, the first rod 411, the second rod 412, the connecting hook 413, the connecting block 414, the drill cover 42, the crushing head 43, the collecting tank 44, the first push rod 45, the anti-shrinkage wall protection component 5, the wall tube 51, the mounting ring 511, the driving member 512, the driving unit 52, the fixing ring 521, the sleeve 522, the angle conversion component 523, the sliding rod 5231, the first connecting rod 5232, the second connecting rod 5233, the support rod 52 4. Mounting member 525, first hinge ball 526, first mounting groove 5261, second hinge ball 527, second mounting groove 5262, first arc-shaped claw 528, second arc-shaped claw 529, third arc-shaped claw 530, wall stabilizing unit 53, first hinge rod 5311, second hinge rod 5312, fixing bar 5313, second push rod 5314, column rod 531, wall stabilizing drill piece 532, mounting seat 533, first mounting bar 534, second mounting bar 535, third mounting bar 536, and collar 537. DETAILED DESCRIPTION

[0044] The following will describe the embodiments of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention, not for limiting the scope of protection of the present invention.

[0045] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0046] This embodiment provides a rotary drilling construction equipment, such as Figure 1 Zhihe Fig.13 As shown, it includes a rotary drilling machine 1 and a rotary drilling structure 2. The rotary drilling machine 1 is rotatably connected with a rotating shaft 3, and the rotating shaft 3 is connected to the rotary drilling structure 2. The rotary drilling machine 1 can drive the rotary drilling structure 2 to rotate and / or rise and fall through the rotating shaft 3. The rotary drilling machine 1 is provided with a driving motor (not shown) and a hydraulic cylinder (not shown). The output shaft of the driving motor is coaxially connected to the rotating shaft 3. The driving motor drives the rotary drilling structure 2 to rotate through the rotating shaft 3. At the same time, the hydraulic cylinder is provided on the rotary drilling machine 1, and the output end of the hydraulic cylinder is connected to the rotating shaft 3, which is used to drive the rotating shaft 3 to rise or fall.

[0047] like Figure 2 and Figure 3 As shown, the rotary drilling structure 2 includes a rotary drilling member 4 and an anti-shrinkage wall protection assembly 5 fixed on the rotary drilling member 4; the anti-shrinkage wall protection assembly 5 includes a wall tube 51, a driving unit 52 arranged in the wall tube 51 and at least two wall stabilizing units 53, one end of the wall tube 51 (i.e. Figure 3 The top end of the middle wall tube 51 is coaxially connected to the rotating shaft 3, and the other end (i.e. Figure 3 The bottom end of the middle wall tube 51) is connected to the rotary excavation member 4; each wall stabilizing unit 53 is evenly distributed on the outer periphery of the wall tube 51 and is connected to the driving unit 52, and the driving unit 52 is used to drive the position and angle of the wall stabilizing unit 53 to change; the wall stabilizing unit 53 has a contracted state and an expanded state, and when the wall tube 51 rotates, the wall stabilizing unit 53 has a tendency to expand outward. When the wall stabilizing unit 53 is in the contracted state, the circular projection formed by each wall stabilizing unit 53 is smaller than the diameter of the rotary excavation member 4, which is convenient for extending into the rotary excavation hole; when the rotary excavation structure 2 rotates, the circular projection formed by each wall stabilizing unit 53 (that is, in a top view, the circular projection formed by each wall stabilizing unit 53 connected) is greater than or equal to the diameter of the rotary excavation member 4.

[0048] The wall stabilizing unit 53 has a contracted state and an expanded state, and can adapt to rotary drilling holes of different diameters, thereby improving the adaptability of rotary drilling.

[0049] In this embodiment, the rotary drilling machine 1 and the rotary drilling structure 2 installed on the rotary drilling machine 1 work together. The rotary drilling machine 1 is used as a power to drive the rotary drilling member 4 to perform rotary drilling. During the operation, the rotary drilling machine 1 is started, and the rotary drilling structure 2 is driven to rotate as a whole through the rotating shaft 3. The core component of the rotary drilling structure 2 is the rotary drilling member 4, which directly participates in the work of rotary drilling. At the same time, the anti-shrinkage wall protection component 5 fixed on the rotary drilling member 4 also rotates together. When the wall tube 51 rotates, the wall stabilizing unit 53 arranged above the rotary drilling member 4 begins to play a role. These wall stabilizing units 53 expand outwards due to centrifugal force during the rotation process, and can be in close contact with the hole wall, thereby playing a role in supporting and stabilizing the hole wall. This outward expansion action enables the wall stabilizing unit 53 to quickly come into close contact with the hole wall and generate friction, so as to enhance the supporting force of the wall stabilizing unit 53 on the hole wall. The density of the hole wall is further increased through friction, which means that the soil particles are more tightly bound together, thereby enhancing the strength and stability of the hole wall and effectively avoiding the occurrence of shrinkage. Even when the formation conditions are complex and the soil is easily deformed, the wall stabilizing unit 53 can ensure the integrity and stability of the hole wall by virtue of its outward expansion tendency and close fitting effect, thereby laying a solid foundation for the subsequent pile foundation construction.

[0050] As a preferred embodiment, Figure 4As shown, the driving unit 52 includes a fixing ring 521, a sleeve 522 and an angle conversion assembly 523. The fixing ring 521 is fixedly arranged inside the wall tube 51, the sleeve 522 is fixed on the fixing ring 521, and a plurality of support rods 524 are fixedly connected to the outer periphery of the sleeve 522. The wall tube 51 is provided with a plurality of movable holes for accommodating the support rods 524 to pass through, and the movable holes are larger than the outer diameter of the support rods 524. In a possible embodiment, after the support rods 524 pass through the movable holes, a blocking member may be arranged at the movable holes to accommodate the movement of the support rods 524 and to block the external mud and sand from entering the wall tube 51. After each support rod 524 passes through the movable hole, a mounting member 525 is movably connected, and the mounting member 525 has a first state and a second state; each wall stabilizing unit 53 is fixedly arranged on the corresponding mounting member 525, and the angle conversion assembly 523 is connected to the mounting member 525 to drive the state of the mounting member 525 to change.

[0051] According to the above technical solution, during the working process, the fixing ring 521 is firmly arranged inside the wall tube 51 to provide stable support for the entire assembly, and the sleeve 522 is fixed on the fixing ring 521, and its outer periphery is movably connected to the mounting member 525 through a number of support rods 524. This design enables the mounting member 525 to flexibly adjust the angle within a certain range. The mounting member 525 has a first state and a second state, and the conversion between these two states is achieved by connecting with the angle conversion component 523, thereby driving the mounting member 525 to adjust the angle during the change process. It should be noted that since the shape and inclination of the hole wall may vary due to different geological conditions, if the angle of the mounting member 525 is fixed, the wall stabilizing unit 53 may not be able to fully contact the hole wall, thereby affecting the friction effect and affecting the stability of the hole wall. By adjusting the angle of the mounting member 525, the wall stabilizing unit 53 can better contact the hole wall, thereby improving the stability of the hole wall. When the rotary drilling structure 2 rotates, the wall stabilizing unit 53 can cover different positions of the hole wall during the rotation process, realize all-round cutting and grinding of the hole wall, expand the hole diameter, and further improve the stability and bearing capacity of the hole wall, thereby enhancing the supporting effect of the hole wall. At the same time, the angle change of the wall stabilizing unit 53 on the mounting part 525 can also reduce the resistance and vibration of the drill during the drilling process, thereby improving the construction efficiency and quality to a certain extent.

[0052] As a preferred embodiment, Figures 4 to 8As shown, the angle conversion assembly 523 includes a slide bar 5231, a first connecting rod 5232 and a second connecting rod 5233. The number of the first connecting rod 5232 and the second connecting rod 5233 is multiple, each first connecting rod 5232 is fixedly connected to the bottom of the slide bar 5231, the first connecting rod 5232 is movably connected to the corresponding second connecting rod 5233, and the second connecting rod 5233 is movably connected to the mounting member 525; the slide bar 5231 can slide along the axial direction of the sleeve 522, and is used to drive the mounting member 525 from the first state ( Figure 6 ) is transformed into the second state ( Figure 7 ), or from the second state ( Figure 7 ) is transformed into the first state ( Figure 6 The angle conversion assembly 523 is a key component in the shrinkage-proof wall protection assembly 5. It realizes the flexible adjustment of the angle of the mounting member 525 through the coordinated action of the slide bar 5231, the first connecting rod 5232 and the second connecting rod 5233. When working, the slide bar 5231 slides along the axial direction of the sleeve 522. This sliding action drives the movement of the first connecting rod 5232 fixedly connected to the slide bar 5231.

[0053] Since the first connecting rod 5232 is movably connected to the corresponding second connecting rod 5233, the movement of the first connecting rod 5232 will drive the second connecting rod 5233 to change its angle; the other end of the second connecting rod 5233 is movably connected to the mounting member 525, so as the angle of the second connecting rod 5233 changes, the mounting member 525 will also change its state accordingly. Specifically, Figure 6 As shown, when the slide bar 5231 slides downward, the slide bar 5231 drives each first connecting rod 5232 to move downward, and the angle and position of the second connecting rod 5233 connected to the first connecting rod 5232 will change, thereby driving the mounting member 525 to change from the first state to the second state; similarly, when the slide bar 5231 slides upward, it will drive the mounting member 525 to return from the second state to the first state. Through this design, the angle conversion component 523 can accurately control the angle change of the mounting member 525, thereby ensuring the periodic change of the wall stabilizing unit 53, so that the wall stabilizing unit 53 can better contact the hole wall and avoid the shrinkage phenomenon.

[0054] Furthermore, if Figure 8As shown, a first hinge ball 526 is provided between the first connecting rod 5232 and the second connecting rod 5233, and two first mounting grooves 5261 are provided on the first hinge ball 526, and the two first mounting grooves 5261 are vertically and cross-arranged; a second hinge ball 527 is provided between the second connecting rod 5233 and the mounting member 525, and two second mounting grooves 5262 are provided on the second hinge ball 527, and the two second mounting grooves 5262 are vertically and cross-arranged; a first arc-shaped claw 528 is provided at the end of the first connecting rod 5232, and second arc-shaped claws 529 are provided at both ends of the second connecting rod 5233, and a third arc-shaped claw 530 is rotatably connected to the mounting member 525; the first arc-shaped claw 528 and one of the second arc-shaped claws 529 are respectively extended into the two correspondingly arranged first mounting grooves 5261, and the other second arc-shaped claw 529 and the third arc-shaped claw 530 are respectively extended into the two second mounting grooves 5262 of the second hinge ball 527.

[0055] Specifically, a first arc-shaped claw 528 is provided at the end of the first connecting rod 5232, and it extends into two vertical and intersecting first mounting grooves 5261 provided on the first hinge ball 526. At the same time, second arc-shaped claws 529 are provided at both ends of the second connecting rod 5233, one of which extends into the first mounting groove 5261 of the first hinge ball 526, and together with the first arc-shaped claw 528, realizes the movable connection between the first connecting rod 5232 and the second connecting rod 5233; the other second arc-shaped claw 529 extends into two vertical and intersecting second mounting grooves 5262 provided on the second hinge ball 527, and the third arc-shaped claw 530 rotatably connected on the mounting member 525 extends into the second mounting groove 5262 of the second hinge ball 527, realizing the movable connection between the second connecting rod 5233 and the mounting member 525. Through this design, the first connecting rod 5232, the second connecting rod 5233 and the mounting member 525 can flexibly change their angles, ensuring that the wall stabilizing unit 53 can fit the hole wall closely during the rotary drilling process, thereby improving the construction quality and efficiency. Compared with the traditional connecting rod articulation method, the articulated ball and arc-shaped claw connection design adopted in the present invention has significant advantages in terms of freedom. The traditional articulation can usually only achieve rotation in a single direction, which limits the flexibility of the connection. In the present invention, the cooperation between the vertical cross mounting grooves and the arc-shaped claws on the first and second hinge balls 527 enables the first connecting rod 5232 and the second connecting rod 5233, as well as the second connecting rod 5233 and the mounting member 525 to achieve flexible rotation in multiple directions, greatly increasing the degree of freedom of connection; at the same time, two first mounting grooves 5261 are opened on the first hinge ball 526, and two second mounting grooves 5262 are opened on the second hinge ball 527. Compared with the traditional ball hinge connection method, this design enables the anti-shrinkage wall protection component 5 to install the first mounting groove 5261 and the second mounting groove 5262 during the rotary drilling process, so as to better adapt to the changes in the hole wall, thereby further improving the stability and bearing capacity of the hole wall and enhancing the supporting effect of the hole wall.

[0056] As a preferred embodiment, Figures 9 to 12 As shown, the rotary drilling component 4 includes a drill barrel 41 and a drill cover 42. The drill cover 42 is openably arranged at the bottom of the drill barrel 41, and a plurality of crushing heads 43 are arranged on the drill cover 42; a collecting groove 44 connected to the inner cavity of the drill barrel 41 is opened on the drill cover 42; the drill cover 42 is openably arranged at the bottom of the drill barrel 41, and the crushing heads 43 installed thereon are used to crush soil. During the rotary drilling process, the soil is crushed and enters the inner cavity of the drill barrel 41, and is collected by the collecting groove 44 at the same time.

[0057] A first rod 411, a second rod 412 and a connecting hook 413 are provided in the drill barrel 41, a connecting block 414 is provided on the drill cover 42, and the connecting hook 413 and the connecting block 414 can be connected to or disconnected from each other; one end of the first rod 411 is hinged to the top of the drill barrel 41, the other end of the first rod 411 is hinged to one end of the second rod 412, the other end of the second rod 412 is hinged to the connecting hook 413, the middle part of the connecting hook 413 is hinged to the drill barrel 41, and a first pushing rod 45 is provided on the first rod 411, and the first pushing rod 45 is used to drive the angle of the connecting hook 413 to change. When the rotary drilling member 4 is in the process of drilling downwards, when the chip soil in the collecting trough 44 reaches a preset amount, the hydraulic cylinder drives the rotary drilling member 4 to be lifted upward, pulls the rotary drilling member 4 out of the hole, and pushes the first push rod 45 downward, so that it drives the first rod 411 and the second rod 412 to be linked. This linkage causes the angle of the connecting hook 413 to change, and then it is separated from the connecting block 414 on the drill cover 42. At this time, the drill cover 42 is opened relative to the drill barrel 41, and the soil in the collecting trough 44 is poured out. After the soil is poured out, the drill cover 42 is closed, and the rotary drilling member 4 continues to go deeper into the hole for rotary drilling. The crushing head 43 on the rotary drilling member 4 can efficiently crush the soil.

[0058] As a preferred embodiment, Figures 10 to 12 As shown, a mounting ring 511 is fixedly disposed in the wall tube 51 , and a driving member 512 is disposed on the mounting ring 511 . The driving member 512 is used to drive the slide rod 5231 to rise or fall, and / or drive the first push rod 45 to rise or fall.

[0059] In one embodiment, Fig.11As shown, the top of the slide bar 5231 is hinged with a first hinge rod 5311, the first hinge rod 5311 is hinged with a second hinge rod 5312, a fixing bar 5313 is provided in the middle of the first hinge rod 5311, the first hinge rod 5311 is rotatably connected to the fixing bar 5313, the fixing bar 5313 is fixed inside the wall tube 51, the second hinge rod 5312 is connected with a second push rod 5314, and the second push rod 5314 is connected to the driving member 512. In this embodiment, the driving member 512 is preferably a cylinder. When the driving member 512 is working, it drives the second push rod 5314 to move up and down. The movement of the second push rod 5314 drives the second hinged rod 5312 to move, thereby driving the angle of the first hinged rod 5311 to rotate. Since the middle part of the first hinged rod 5311 is rotatably installed on the fixed strip 5313, it finally drives the sliding rod 5231 to move up and down. When the sliding rod 5231 moves up and down, it acts on the angle conversion component 523, thereby driving the wall stabilizing unit 53 to change periodically, so that the wall stabilizing unit 53 can better contact the hole wall and avoid the shrinkage phenomenon.

[0060] In one embodiment, Fig.12 As shown, the driving member 512 is installed on the mounting ring 511, and the output end of the driving member 512 passes through the mounting ring 511 and is connected to the slide bar 5231. The driving member 512 is used to drive the slide bar 5231 to move up and down, and the structure is simple and compact.

[0061] In one embodiment, Fig.10 As shown, the top of the slide bar 5231 is hinged with a first hinged rod 5311, the first hinged rod 5311 is hinged with a second hinged rod 5312, the middle of the first hinged rod 5311 is provided with a fixing bar 5313, the first hinged rod 5311 is rotatably connected with the fixing bar 5313, the fixing bar 5313 is fixed inside the wall tube 51, the second hinged rod 5312 is connected with the first push rod 45, and the first push rod 45 is connected with the driving member 512. In this embodiment, the driving member 512 has dual functions, one is to drive the slide bar 5231 to rise or fall to adjust the angle of the anti-shrinkage wall protection component 5; the other is to drive the first push rod 45 to rise or fall to control the opening and closing of the drill cover 42 of the rotary excavation component 4. On the one hand, it can drive the slide bar 5231 to move up and down, so that the anti-shrinkage wall protection component 5 fits the hole wall, effectively preventing the shrinkage phenomenon and avoiding shrinkage holes. On the other hand, the driving member 512 can drive the first push rod 45 to control the opening and closing of the drill cover 42 of the rotary drilling member 4 to realize soil excavation, collection and processing. This integrated design simplifies the structure and reduces costs, while improving the operational convenience and operating efficiency of the equipment, bringing convenience to rotary drilling construction.

[0062] As a preferred embodiment, the wall stabilizing unit 53 includes a column 531, a drill bar and a mounting seat 533 fixed at both ends of the column 531, the two mounting seats 533 are connected to the mounting piece 525, and a first mounting bar 534, a second mounting bar 535 and a third mounting bar 536 are arranged between the column 531 and the wall stabilizing drill piece 532. The first mounting bar 534 and the second mounting bar 535 are arranged in parallel, and a ring 537 is slidably arranged on the column 531, and a tension spring is arranged between the ring 537 and one of the mounting seats 533; one end of the third mounting bar 536 is hinged to the ring 537, and the other end of the third mounting bar 536 is hinged to the middle position of the second mounting bar 535. According to the above technical solution, the wall stabilizing unit 53 is firmly connected to the mounting member 525 through the mounting seat 533, and the sleeve ring 537 slidably arranged on the column 531 makes the wall stabilizing unit 53 shrink as a whole under the action of the tension spring. When the rotary drilling equipment starts to work, the wall stabilizing unit 53 rotates with the drill rod. During the rotation process, due to the action of centrifugal force, the wall stabilizing unit 53 expands outward and contacts closely with the hole wall; at this time, the first and second mounting bars 535 between the column 531 and the wall stabilizing drill piece 532 provide stable support, and the third mounting bar 536 allows the wall stabilizing unit 53 to open appropriately under the action of centrifugal force through a hinged relationship.

[0063] It should be noted that during the rotation process, the centrifugal force generated during the rotation process must be greater than the tension of the tension spring.

[0064] The contact between the wall stabilizing unit 53 and the hole wall further increases the density of the hole wall through friction, that is, the soil particles are more tightly bound together. This design not only enhances the strength and stability of the hole wall, but also effectively prevents the hole wall from collapsing during the drilling process, thereby improving the accuracy and efficiency of rotary drilling.

[0065] As a preferred embodiment, the wall-stabilizing drill bit 532 has a wavy structure. The wall-stabilizing drill bit 532 with a wavy structure can produce a certain turbulence effect during the contact with the hole wall, thereby reducing the surface temperature of the wall-stabilizing drill bit 532 and avoiding the accumulation of mud and debris on the hole wall. Moreover, the wavy structure design is more in line with air flow mechanics, which helps to reduce the vibration and noise during the friction with the hole wall to a certain extent and improve the stability of the hole wall.

[0066] Preparation step: connect the rotary drilling machine 1, the rotary drilling structure 2 and the rotating shaft 3. The rotary drilling machine 1 can drive the rotary drilling structure 2 to rotate and / or lift via the rotating shaft 3.

[0067] Initial position setting step: align the rotary drilling member 4 of the rotary drilling structure 2 with the position of the hole to be drilled, and ensure that the wall stabilizing unit 53 of the anti-shrinkage wall protection component 5 can extend into the hole to be drilled in the retracted state; Drilling start-up steps: start the rotary drilling machine 1, drive the rotary drilling structure 2 to rotate and lift as a whole through the rotating shaft 3, drive the rotary drilling member 4 to start rotary drilling of the hole, and at the same time inject grout into the hole to balance the pressure in the hole and further improve the stability of the inner wall of the hole; The step of unfolding the shrinkage-proof wall protection component: during the rotary drilling process, as the rotary drilling structure 2 rotates, the wall stabilizing unit 53 of the shrinkage-proof wall protection component 5 changes from a contracted state to an expanded state under the action of centrifugal force, and comes into close contact with the hole wall to support and stabilize the hole wall; Adjustment step: the driving member 512 provided on the rotary drilling machine 1 drives the slide bar 5231 to slide axially along the sleeve 522 periodically, and then the angle of the mounting member 525 is continuously adjusted through the angle conversion assembly 523, so that the wall stabilizing unit 53 is switched between the first state and the second state, thereby enhancing the stability of the hole wall; Soil collection and processing steps: The soil collected by the rotary excavator 4 during the drilling process is collected through the collecting groove 44 thereon. When the soil in the collecting groove 44 reaches a preset amount, the first push rod 45 is driven by the driving member 512 to open the drill cover 42. After the soil is dumped, the drill cover 42 is closed to continue the rotary excavation operation. Drilling completion step: When the hole reaches a predetermined depth and diameter, the rotary drilling machine is stopped, and the rotary drilling structure 2 is lifted out of the hole to complete the drilling operation.

[0068] The above embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Any equivalent substitution or change made by a person skilled in the art on the basis of the present invention is within the protection scope of the present invention.

Claims

1. A rotary drilling construction equipment, characterized in that: include: A rotary drilling machine (1) and a rotary drilling structure (2), wherein the rotary drilling machine (1) is rotatably connected to a rotating shaft (3), the rotating shaft (3) is connected to the rotary drilling structure (2), and the rotary drilling machine (1) can drive the rotary drilling structure (2) to rotate and / or lift via the rotating shaft (3); The rotary drilling structure (2) comprises a rotary drilling component (4) and an anti-shrinkage wall protection component (5) fixed on the rotary drilling component (4); The shrinkage-proof wall protection assembly (5) comprises a wall tube (51), a driving unit (52) arranged in the wall tube (51), and at least two wall stabilizing units (53); one end of the wall tube (51) is connected to the rotating shaft (3), and the other end is connected to the rotary drilling member (4); Each of the wall stabilizing units (53) is evenly distributed on the outer periphery of the wall tube (51) and is connected to the driving unit (52), and the driving unit (52) is used to drive the position and angle of the wall stabilizing unit (53) to change; The wall stabilizing unit (53) has a contracted state and an expanded state, and when the wall tube (51) rotates, the wall stabilizing unit (53) has a tendency to expand outwards; When the wall stabilizing units (53) are in a contracted state, the projection formed by the enclosed wall stabilizing units (53) is smaller than the diameter of the rotary drilling member (4); when the rotary drilling structure (2) rotates, the projection formed by the enclosed wall stabilizing units (53) is greater than or equal to the diameter of the rotary drilling member (4).

2. The rotary drilling construction equipment according to claim 1, characterized in that: The driving unit (52) comprises a fixing ring (521), a sleeve (522) and an angle conversion assembly (523); the fixing ring (521) is fixedly arranged inside the wall tube (51); the sleeve (522) is fixed on the fixing ring (521); a plurality of support rods (524) are fixedly connected to the outer periphery of the sleeve (522); each of the support rods (524) is movably connected to a mounting member (525); the mounting member (525) has a first state and a second state; each of the wall stabilizing units (53) is fixedly arranged on a corresponding one of the mounting members (525); the angle conversion assembly (523) is connected to the mounting member (525) and is used to drive the state of the mounting member (525) to change.

3. The rotary drilling construction equipment according to claim 2 is characterized in that: The angle conversion assembly (523) comprises a sliding rod (5231), a first connecting rod (5232) and a second connecting rod (5233), wherein the number of the first connecting rod (5232) and the second connecting rod (5233) is plural, each of the first connecting rods (5232) is fixedly connected to the end of the sliding rod (5231), the first connecting rod (5232) is movably connected to the corresponding second connecting rod (5233), and the second connecting rod (5233) is movably connected to the mounting member (525); The sliding rod (5231) can slide along the axial direction of the sleeve (522) to drive the mounting member (525) to transform from the first state to the second state, or from the second state to the first state.

4. The rotary drilling construction equipment according to claim 3 is characterized in that: A first hinge ball (526) is provided between the first connecting rod (5232) and the second connecting rod (5233), and two first mounting grooves (5261) are provided on the first hinge ball (526), ​​and the two first mounting grooves (5261) are arranged perpendicularly and crosswise with each other; a second hinge ball (527) is provided between the second connecting rod (5233) and the mounting member (525), and two second mounting grooves (5262) ​​are provided on the second hinge ball (527), and the two second mounting grooves (5262) ​​are arranged perpendicularly and crosswise with each other; The end of the first connecting rod (5232) is provided with a first arc-shaped claw (528), both ends of the second connecting rod (5233) are provided with a second arc-shaped claw (529), and the mounting member (525) is rotatably connected to a third arc-shaped claw (530); The first arc-shaped claw (528) and one of the second arc-shaped claws (529) extend into two corresponding first mounting grooves (5261) respectively, and the other second arc-shaped claw (529) and the third arc-shaped claw (530) extend into two corresponding second mounting grooves (5262) ​​respectively.

5. The rotary drilling construction equipment according to claim 4, characterized in that: The rotary drilling member (4) comprises a drill tube (41) and a drill cover (42); the drill cover (42) is arranged at the bottom of the drill tube (41) in an openable and closable manner; and a plurality of crushing heads (43) are arranged on the drill cover (42); The drill cover (42) is provided with a collecting groove (44) which is in communication with the inner cavity of the drill tube (41); A first rod (411), a second rod (412) and a connecting hook (413) are arranged in the drill tube (41); a connecting block (414) is arranged on the drill cover (42); the connecting hook (413) and the connecting block (414) can be connected to or disconnected from each other; One end of the first rod (411) is hinged to the top of the drill tube (41), the other end of the first rod (411) is hinged to one end of the second rod (412), the other end of the second rod (412) is hinged to the connecting hook (413), the middle part of the connecting hook (413) is hinged to the drill tube (41), and a first pushing rod (45) is provided on the first rod (411), and the first pushing rod (45) is used to drive the angle of the connecting hook (413) to change.

6. The rotary drilling construction equipment according to claim 5, characterized in that: A mounting ring (511) is fixedly disposed inside the wall tube (51), and a driving member (512) is disposed on the mounting ring (511), and the driving member (512) is used to drive the sliding rod (5231) to rise or fall; and / or, The first push rod (45) is driven to rise or fall.

7. The rotary drilling construction equipment according to claim 6, characterized in that: A first hinged rod (5311) is hinged on the top of the sliding rod (5231), a second hinged rod (5312) is hinged on the first hinged rod (5311), a fixing bar (5313) is provided in the middle of the first hinged rod (5311), the first hinged rod (5311) is rotatably connected to the fixing bar (5313), the fixing bar (5313) is fixed inside the wall tube (51), a second pushing rod (5314) is connected to the second hinged rod (5312), and the second pushing rod (5314) is connected to the driving member (512).

8. The rotary drilling construction equipment according to claim 6, characterized in that: A first hinged rod (5311) is hinged on the top of the sliding rod (5231), a second hinged rod (5312) is hinged on the first hinged rod (5311), a fixing bar (5313) is provided in the middle of the first hinged rod (5311), the first hinged rod (5311) is rotatably connected to the fixing bar (5313), the fixing bar (5313) is fixed inside the wall tube (51), the second hinged rod (5312) is connected to the first push rod (45), and the first push rod (45) is connected to the driving member (512).

9. The rotary drilling construction equipment according to claim 4, characterized in that: The wall stabilizing unit (53) comprises a column (531), a wall stabilizing drill piece (532) and mounting seats (533) fixed at both ends of the column (531); the two mounting seats (533) are connected to the mounting member (525); a first mounting bar (534), a second mounting bar (535) and a third mounting bar (536) are arranged between the column (531) and the wall stabilizing drill piece (532); the first mounting bar (534) and the second mounting bar (535) are arranged in parallel; a sleeve ring (537) is slidably arranged on the column (531); a tension spring (538) is arranged between the sleeve ring (537) and one of the mounting seats (533); one end of the third mounting bar (536) is hinged to the sleeve ring (537); the other end of the third mounting bar (536) is hinged to the middle position of the second mounting bar (535); The wall-stabilizing drill bit (532) has a wave-shaped structure.

10. A rotary drilling construction method, characterized in that: The rotary drilling construction equipment according to any one of claims 1 to 9 further comprises the following steps: Preparation step: connecting the rotary drilling machine (1), the rotary drilling structure (2) and the rotating shaft (3), aligning the rotary drilling member (4) of the rotary drilling structure (2) with the position of the hole to be drilled, and ensuring that the wall stabilizing unit (53) of the anti-shrinkage wall protection component (5) can extend into the hole to be drilled in a retracted state; The drilling start-up steps include starting the rotary drilling machine (1), driving the rotary drilling structure (2) to rotate and lift as a whole through the rotating shaft (3), driving the rotary drilling member (4) to start rotary drilling of the hole, and injecting grout into the hole at the same time; During the rotary drilling process, as the rotary drilling structure (2) rotates, the wall stabilizing unit (53) of the anti-shrinkage wall protection assembly (5) changes from a contracted state to an expanded state under the action of centrifugal force, and comes into close contact with the hole wall, thereby supporting and stabilizing the hole wall; Adjustment step: driving the slide bar (5231) to periodically slide axially along the sleeve (522) by means of a driving member (512) provided on the rotary drilling machine (1), and then continuously adjusting the angle of the mounting member (525) by means of an angle conversion assembly (523), so that the wall stabilizing unit (53) is switched between the first state and the second state; Soil collection and processing steps: the soil collected by the rotary digging member (4) during the drilling process is collected through the collection groove (44) thereon; when the soil in the collection groove (44) reaches a preset amount, the rotary digging member (4) is lifted up, and the first push rod (45) is driven by the driving member (512) to open the drill cover (42); after the soil is dumped, the drill cover (42) is closed, and the rotary digging operation is continued; Drilling completion step: When the hole reaches a predetermined depth and diameter, the rotary drilling machine (1) is stopped, and the rotary drilling structure (2) is lifted out of the hole to complete the drilling operation.

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