Square special-shaped pile hole-forming rotary drilling rig

Abstract

The utility model discloses a hole-forming rotary drilling rig for a square special-shaped pile, and relates to the technical field of pile foundation engineering. In order to solve the problems of low efficiency and long construction period due to the fact that square pile hole forming mostly depends on a traditional rotary drilling rig to drill a round hole and then trim the round hole into a square hole, the following technical scheme is provided: the drilling machine comprises a main machine walking assembly, an extension arm of the main machine walking assembly is connected with a mast through a connecting piece, and the outer side end of the mast is provided with a lifter; a square mold is arranged at the side end of the lifter, the main machine walking assembly is connected with a center shaft drill rod through a rotary driving assembly, the center shaft drill rod extends to the bottom of the drilling machine shell and is provided with a Reuleaux drill bit, and the square mold is arranged outside the Reuleaux drill bit in a sleeving mode. The square pile hole forming device has high construction efficiency, can directly complete hole forming of a square pile hole, avoids the problem of finishing after round hole drilling in a traditional method, greatly shortens the construction period, reduces the labor cost, and improves the construction safety.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pile foundation engineering technical field, concretely relates to a square special-shaped pile hole forming rotary drilling rig. BACKGROUND

[0002] In modern construction engineering, especially in special engineering such as deep foundation pit and high slope, square pile has become the preferred scheme of anti-slide pile, reinforcing pile and the like due to its larger side friction and higher lateral bearing capacity. Compared with round pile, square pile has larger side friction area under the condition of equal cross section and equal material, and can significantly improve the compression resistance and uplift resistance of the pile, especially in soft stratum or complex geological conditions, has better mechanical properties. Therefore, the application of square pile is more and more widely.

[0003] However, the existing large-size square pile hole forming technology still faces a series of technical problems. At present, the hole forming method of square pile mainly relies on manual excavation, and manual excavation not only has low efficiency, but also has certain safety hazards. Although there are different types of mechanical hole forming methods such as multi-drill bit mechanical rotary drilling and mobile drill rod rotary drilling, these methods have not formed mature equipment and construction technology in practical application, and have certain limitations. Common mechanical construction equipment usually first drills a circular hole by using a rotary drilling rig, and then uses other equipment to trim a square hole. This method not only has low construction efficiency, but also is difficult to complete the hole forming of square hole at one time, thereby increasing the construction period and cost. SUMMARY

[0004] The utility model aims at providing a square special-shaped pile hole forming rotary drilling rig to solve the problems that the existing square pile hole forming mainly relies on the traditional rotary drilling rig to drill a circular hole first and then trim a square hole, and the efficiency is low and the construction period is long.

[0005] To solve the above problems, the utility model provides a square special-shaped pile hole forming rotary drilling rig, 1. A square special-shaped pile hole forming rotary drilling rig, characterized by comprising:

[0006] A host machine walking assembly;

[0007] A mast is connected to the elongated arm of the host machine walking assembly through a connecting piece;

[0008] The lifter is arranged on the side of the mast away from the host machine walking assembly;

[0009] A square mold is arranged on the side of the lifter away from the mast, and the lifter is used to drive the square mold to move up and down along the mast;

[0010] A middle shaft drill rod is connected to the host machine walking assembly through a rotary drive assembly at the top end;

[0011] A Reuleaux triangular drill bit is located at the bottom end of the central drill rod, and a square mold is fitted over the outside of the Reuleaux triangular drill bit.

[0012] Furthermore, the main unit's walking assembly includes a power system (11) and a hydraulic system (12).

[0013] Furthermore, a power assembly is provided between the central drill rod and the Reuleaux triangular drill bit.

[0014] Furthermore, a screw-type drilling rig is provided between the powertrain and the Reuleaux triangular drill bit.

[0015] Furthermore, the square mold is rectangular or square.

[0016] Furthermore, a drilling rig housing is fitted over the central drill rod, and the bottom of the drilling rig housing is fixedly connected to the square mold.

[0017] Furthermore, the bottom of the drilling rig housing is provided with a slag outlet for cleaning up the soil and slag generated during drilling; the sides of the drilling rig housing and the square mold are also provided with multiple movable supports for supporting the square mold.

[0018] Furthermore, the inner contour of the square mold is square, and the outer wall of the square mold is provided with a wear-resistant layer.

[0019] This utility model has the following beneficial effects:

[0020] This invention, through the coordinated operation of a Reuleaux triangular drill bit and a square mold, enables the direct formation of square pile holes in a single operation. This avoids the inefficient post-drilling and finishing process required for circular holes in traditional methods, significantly improving drilling efficiency. The square mold remains stable throughout the drilling process, ensuring the square shape of the hole wall and preventing irregularities or poor precision that can occur in traditional drilled piles. This square irregular pile hole-forming device eliminates the need for post-drilling, reducing labor and equipment usage and lowering construction costs. Mechanized operation replaces manual labor, reducing safety hazards and ensuring the safety of the construction process. Attached Figure Description

[0021] Fig. 1 This is a schematic diagram of the overall structure of the rotary drilling rig for forming square irregular piles according to this utility model;

[0022] Fig. 2 This is a schematic diagram of the Reuleaux triangle drill bit of the rotary drilling rig for forming square irregular piles according to this utility model;

[0023] Fig. 3The utility model discloses a square special-shaped pile hole forming rotary drilling rig's square die and the combination of Leluo triangle drill bit schematic view.

[0024] In the drawing: 1, main machine walking assembly;11, power system;12, hydraulic system;2, mast;21, connecting piece;3, lifter;4, central shaft drill rod;5, power assembly;6, screw drill;7, square die;8, Leluo triangle drill bit. DETAILED DESCRIPTION

[0025] The technical scheme of the utility model will be described clearly and completely below in connection with the drawings, obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without the premise of the creative labor belong to the range of protection of the utility model.

[0026] Please refer to Figs. 1-3 The utility model provides a kind of square special-shaped pile hole forming rotary drilling rig, the device and method are aimed at solving the problems of square pile hole construction in prior art, great difficulty, low efficiency and insufficient hole forming accuracy. The specific embodiment of the utility model will be described in detail below, including the structural composition of device, working principle and the detailed steps of hole forming method.

[0027] First, the square special-shaped pile hole forming rotary drilling rig provided by the utility model mainly includes main machine walking assembly 1, mast 2, lifter 3, square die 7, central shaft drill rod 4, Leluo triangle drill bit 8, drill housing, power assembly 5 and screw drill 6 etc.

[0028] Main machine walking assembly 1 is the movement and positioning component of the whole device. Including power system 11 and hydraulic system 12, power system 11 provides power, so that the device can freely move in construction site, to facilitate to reach specified pile foundation construction position. Hydraulic system 12 is used for accurately controlling the lifting, rotation and other actions of device, to ensure the accuracy and efficiency of construction. The design of main machine walking assembly 1 makes the whole device can be stably supported on ground, and can work under different terrain and geological conditions.

[0029] Mast 2 is connected with the extension arm of main machine walking assembly 1 through connecting piece 21. Mast 2 plays the role of supporting and fixing other components, and the height and stability of mast 2 are crucial to the working efficiency and hole forming accuracy of the whole device. The design of mast 2 makes other components can be stably installed on it, and can carry out accurate lifting and rotation operation.

[0030] The riser 3 is arranged at the outer end of the mast 2, used to drive the lifting of the square mold 7. The riser 3 is driven by hydraulic pressure, which can accurately control the sinking depth and speed of the square mold 7. The design of the riser 3 enables the square mold 7 to be lifted stably and synchronously with the Leloc triangular drill bit 8 to form a square pile hole.

[0031] The inner contour of the square mold 7 is square, and the outer wall is provided with a wear-resistant layer. The square mold 7 is sleeved on the outside of the Leloc triangular drill bit 8, and when the Leloc triangular drill bit 8 rotates to cut the soil layer, the square mold 7 synchronously sinks to form a square pile hole. The design of the wear-resistant layer can prolong the service life of the square mold 7 and improve the efficiency of hole forming. At the same time, the design of the square mold 7 can also withstand the friction generated during drilling to ensure the stability and shape accuracy of the square pile hole.

[0032] The central shaft drill rod 4 is vertically arranged in the drilling machine shell (not shown in the drilling machine shell diagram), and its top end is connected with the rotary drive assembly (not shown in the figure), and its bottom end extends out of the bottom of the drilling machine shell and is connected with the Leloc triangular drill bit 8. The strength and stability of the central shaft drill rod 4 have important influence on the rotary cutting effect of the drill bit and the hole forming accuracy. Its design enables the Leloc triangular drill bit 8 to stably rotate and cut the soil layer to form a square pile hole. The rotary drive assembly includes a motor or a hydraulic motor, a speed reducer, a transmission shaft and a shaft coupling, which is used to drive the rotation of the central shaft drill rod 4.

[0033] The horizontal section of the Leloc triangular drill bit 8 is designed in a triangular shape, which can directly cut the soil layer to form a square pile hole by cooperating with the rotary drive assembly. The rotary cutting action of the Leloc triangular drill bit 8 combined with the synchronous sinking of the square mold 7 ensures the stability and accuracy of the hole forming process. At the same time, the design of the Leloc triangular drill bit 8 can also adapt to different hardness of the soil layer to improve the efficiency of hole forming.

[0034] The drilling machine shell is arranged on the side of the mast 2 away from the main machine walking assembly 1, used to accommodate and protect the central shaft drill rod 4, the rotary drive assembly and other components. The design of the drilling machine shell enables these components to be stably installed therein and can be accurately lifted and rotated. At the same time, the bottom of the drilling machine shell is provided with a slag outlet, which is convenient for cleaning the soil slag generated during drilling to maintain the cleanliness and efficient operation of the drilling machine.

[0035] The power assembly 5 is arranged between the central shaft drill rod 4 and the Leloc triangular drill bit 8, used to provide the power required for the rotation of the drill bit. Its design enables the Leloc triangular drill bit 8 to stably rotate and cut the soil layer to improve the efficiency of hole forming. At the same time, the design of the power assembly 5 can also adapt to different speed and torque requirements to ensure the cutting effect of the drill bit.

[0036] The screw drill 6 further enhances the cutting effect of the drill bit. It adopts a screw transmission mechanism, which can transmit rotary power to the Luer triangular drill bit 8 to generate greater cutting force. The design of the screw drill 6 enables the drill bit to cut the soil layer more quickly, improving the efficiency of hole forming.

[0037] In addition, the square special-shaped pile hole forming rotary drilling rig further comprises some auxiliary components, such as a movable support. The movable support is arranged at the side of the drill rig shell and the square mold 7, and is used for supporting the square mold 7 to prevent it from deviating or deforming during drilling. The design of the movable support enables the square mold 7 to remain stable, ensuring the hole forming accuracy.

[0038] In specific implementation, the square pile hole forming method provided by the utility model comprises the following steps:

[0039] S1, equipment assembly and target pile forming position determination: first, assemble various components to form a complete square special-shaped pile hole forming rotary drilling rig. Then, determine the target pile forming position according to the construction requirements, move the device to the specified position and perform positioning calibration. In this process, it is necessary to ensure that the square mold 7, the Luer triangular drill bit 8 and the lifter 3 and other components are in a completely fixed state to ensure the stability and accuracy of the hole forming process.

[0040] S2, Luer triangular drill bit 8 excavation and sinking: start the lifter 3 to make the Luer triangular drill bit 8 rotate and cut. At the same time, the square mold 7 and the Luer triangular drill bit 8 sink synchronously to form a square pile hole. In this process, the rotation speed and cutting depth of the drill bit need to be controlled to ensure the stability and accuracy of the hole forming process. When the set depth is reached, stop the drill bit rotation and prepare for the next operation.

[0041] S3, square mold 7 fixation: fix the square mold 7 at the target position through the lifter 3. In this process, it is necessary to ensure that the mold and the Luer triangular drill bit 8 sink synchronously to avoid deviation or deformation of the mold. At the same time, it is also necessary to check the fixation of the mold to ensure its stability and reliability.

[0042] S4, Luer triangular drill bit 8 and square mold 7 disengagement: after the formation of the square pile hole is completed, the lifter 3 needs to be lifted to lift the Luer triangular drill bit 8 and the square mold 7 away from the soil layer. In this process, the lifting speed and height need to be controlled to ensure that the mold and the drill bit can smoothly separate from the soil layer and avoid damaging the pile hole. Then, the mold and the drill bit are placed at the specified position, ready for subsequent concrete pouring operation.

[0043] S5, pouring promotion: after the completion of the Lolo triangle drill bit 8 and the square die 7 is removed, the concrete pouring operation is carried out. The concrete is injected into the square pile hole, and it is waited to solidify. In this process, the pouring speed and quantity need to be controlled to ensure that the concrete can uniformly fill the pile hole and avoid the generation of bubbles or cavities. Then, the device is moved to the next construction position, and the above steps are repeated to construct the next pile hole.

[0044] In summary, the square special-shaped pile hole forming rotary drilling rig and the hole forming method thereof have the advantages of simple structure, convenient operation, high hole forming efficiency, high hole forming precision and the like. It is suitable for pile foundation construction under different geological conditions, especially when applied in deep foundation pit engineering, it can significantly improve the hole forming efficiency and quality of large-diameter pile holes. At the same time, the utility model also provides waterproof elevators and square molds with special corrosion-resistant treatment and other auxiliary components to adapt to the construction needs of special conditions such as high water level and soft soil foundation.

[0045] The above only describes the preferred embodiments of the utility model, and is not used to limit the utility model, any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A square-shaped profiled pile hole-forming rotary drilling rig, characterized by, The utility model relates to a square drill head and a drilling machine. The utility model discloses a square drill head and a drilling machine. The utility model discloses a square drill head and a drilling machine. The utility model discloses a square drill head and a drilling machine. The utility model discloses a square drill head and a drilling machine. The utility model discloses a square drill head and a drilling machine. The utility model discloses a square drill head and a drilling machine.

2. The square-shaped corner-pile hole-forming rotary drilling rig according to claim 1, characterized by, The utility model discloses a square drill head and a drilling machine.

3. The square-shaped octagonal pile hole-forming rotary drilling rig according to claim 1, characterized by, The utility model discloses a square drill head and a drilling machine.

4. The square octagonal pile hole-forming rotary drilling rig according to claim 3, characterized by, The utility model discloses a square drill head and a drilling machine.

5. The square-shaped octagonal pile hole-forming rotary drilling rig according to claim 1, characterized by, The utility model discloses a square drill head and a drilling machine.

6. The square octagonal pile hole-forming rotary drilling rig according to claim 1, characterized by, The utility model discloses a square drill head and a drilling machine.

7. The square octagonal pile hole-forming rotary drilling rig according to claim 6, characterized by, The utility model discloses a square drill head and a drilling machine.

8. The square octagonal pile hole-forming rotary drilling rig according to claim 1, characterized by, The utility model discloses a square drill head and a drilling machine. The utility model discloses a square drill head and a drilling machine. The utility model discloses a square drill head and a drilling machine. The utility model discloses a square drill head and a drilling machine. The utility model discloses a square drill head and a drilling machine. The utility model discloses a square drill head and a drilling machine. The utility model discloses a square drill head and a drilling machine. The utility model discloses a square drill head and a drilling machine. The utility model discloses a square drill head and a drilling machine. The utility model discloses a square drill head and a drilling machine. The utility model discloses a square drill head and a drilling machine. The utility model discloses a square drill head and a drilling machine. 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