A pile foundation reaming tool

Abstract

The application discloses a pile foundation reaming drill tool, which comprises a cutting drill tool, a cutting drill tool comprises a cutting cutter barrel, the cutting cutter barrel is provided with a cutting cutter edge; the reaming drill tool is fixedly connected with the cutting drill tool, and comprises a drill tool drill core fixedly connected with the cutting cutter barrel, a reaming cutter barrel sleeved on the drill tool drill core, and a reaming cutter head fixedly connected with the reaming cutter barrel; a drilling driving device is arranged in the drill tool drill core; a plurality of soil removal auxiliary devices are arranged on the drill tool drill core; and a hole wall stabilizing device is arranged on the reaming drill tool and comprises a plurality of top wall units arranged at equal angles on the reaming drill tool, wherein the top wall unit comprises a top wall pusher rotatably arranged on the reaming cutter barrel and a top wall driving device fixedly arranged on the drill tool drill core. The application can effectively solve the two problems of soil removal difficulty and hole wall collapse, can significantly improve the efficiency and quality of pile foundation construction, and provides powerful guarantee for engineering construction.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pile foundation construction, in particular to a pile foundation reaming drill. BACKGROUND

[0002] In the process of pile foundation construction, drilling and reaming are crucial links.

[0003] However, in actual operation, the construction team often faces two major problems: difficulty in soil removal and hole wall collapse. Difficulty in soil removal not only causes the drill to receive additional resistance during drilling, reducing construction speed, but also affects drilling accuracy due to soil attachment on the drill. Hole wall collapse can cause safety accidents, delay the construction period, and increase construction costs.

[0004] Therefore, how to effectively solve the problems of soil removal difficulty and hole wall collapse has become the key to improving the efficiency and quality of pile foundation construction. Soil removal difficulty is common in pile foundation construction, especially in areas with complex geological conditions and high soil viscosity.

[0005] For example, in patent CN214940139U, although a pile foundation mechanical reaming drill is proposed, which achieves slow expansion of the pile diameter and segmented cutting of the soil through specific structural design, in actual construction process, if the soil viscosity is large or contains more impurities, soil removal may still be difficult, affecting construction progress.

[0006] Similarly, in patent CN217681590U, a bored pile grading reaming bit is disclosed, which can reduce the labor intensity of construction personnel, but when facing clayey soil, it may also cause construction efficiency to decrease due to difficulty in soil removal. In addition, the problem of hole wall collapse cannot be ignored, especially in soft soil foundation or areas with high groundwater level, the hole wall stability is poor and prone to collapse, posing a great risk to construction.

[0007] To solve the above problems, the present application provides a new pile foundation reaming drill, which can effectively solve the two major problems of soil removal difficulty and hole wall collapse, can timely separate the soil attached to the drill during soil removal, reduce soil removal time, and improve construction speed; at the same time, it can prevent hole wall collapse, ensure construction safety, and significantly improve the efficiency and quality of pile foundation construction, providing strong support for engineering construction. SUMMARY

[0008] The present application aims to solve the problems of soil removal difficulty and hole wall collapse in the prior art.

[0009] To solve the above problems, the present application provides a pile foundation reaming drill, comprising:

[0010] The cutting drill includes a cutting bit barrel, and the cutting bit barrel is provided with a cutting bit opening.

[0011] The reaming drill tool is fixedly connected with the cutting drill tool, comprising a drill tool core fixedly connected with a cutting tool barrel, a reaming tool barrel sleeved on the drill tool core, and a reaming tool head fixedly connected with the reaming tool barrel, wherein a drilling driving device is arranged in the drill tool core to drive the rotation of the cutting drill tool and the reaming drill tool, and a plurality of soil removal auxiliary devices are arranged on the drill tool core.

[0012] The hole wall stabilizing device is arranged on the reaming drill tool and comprises a plurality of top wall units arranged at equal angles on the reaming drill tool, wherein the top wall unit comprises a top wall pushing tool rotatably arranged on the reaming tool barrel and a top wall driving device fixedly arranged on the drill tool core.

[0013] Further, the top wall pushing tool comprises a top wall pushing plate rotatably connected with the reaming drill tool, the top wall pushing plate is fixedly provided with a hinged arm, one end of the top wall driving device is provided with a driving arm rotatably connected with the hinged arm, and the top wall driving device pushes the driving arm to move along the length direction.

[0014] Further, the top wall unit comprises a support base fixedly arranged on the reaming tool barrel, the top wall pushing plate is provided with a connecting base rotatably connected with the support base, an angle damping device is arranged between the support base and the connecting base, and the top wall driving device pushes the driving arm to move along the length direction so that the top wall pushing plate rotates relative to the support base.

[0015] Further, a plurality of connecting ribs arranged at equal angles are fixedly connected between the drill tool core and the reaming tool barrel, and a reinforcing rib is arranged between the connecting rib and the support base.

[0016] Further, the reaming tool barrel is provided with a reaming tool opening facing the cutting drill tool, a plurality of accommodating grooves corresponding to the soil removal auxiliary devices are arranged on the drill tool core, the soil removal auxiliary device comprises a soil removal auxiliary wheel and a soil removal driving device for driving the soil removal auxiliary wheel to rotate towards the direction of the reaming tool opening, at least part of the soil removal auxiliary wheels are arranged in the accommodating grooves, and the soil removal driving device is arranged in the drill tool core.

[0017] Further, a joint connecting table is arranged on the drill tool core, one end of the top wall driving device is fixedly arranged on the joint connecting table, and a connecting port is arranged on the joint connecting table.

[0018] Further, a plurality of reaming auxiliary rods are arranged between the drill tool core and the reaming tool barrel, and a reaming auxiliary tool is arranged on the reaming auxiliary rod.

[0019] Further, cutting threads are fixedly arranged on the inner and outer surfaces of the cutting tool barrel, and a cutting tool head is fixedly arranged on the cutting tool opening.

[0020] Further, reaming threads are fixedly arranged on the inner and outer surfaces of the reaming tool barrel, and a reaming tool head is fixedly arranged on the reaming tool opening.

[0021] The present application has the advantages of:

[0022] In the present application, the pile foundation reaming drill is fixedly connected with a cutting drill and a reaming drill, and the drilling driving device can simultaneously drive the two to rotate. In construction, the cutting drill first performs preliminary cutting drilling, and then the reaming drill immediately performs reaming operation, without the need of replacing the drill, greatly improving the construction efficiency and reducing the construction time and cost.

[0023] The hole wall stabilizing device arranged on the reaming drill drives the driving arm through the top wall driving device, so that the top wall push plate rotates relative to the support base and pushes and extrudes the hole wall, so that the soil of the hole wall is more compact. The simultaneous action of the multiple top wall units arranged at equal angles can effectively support the hole wall, prevent the hole wall from collapsing, ensure construction safety, and is especially suitable for areas with poor geological conditions and hole walls prone to instability. The corner damping device arranged between the support base and the connecting base can make the top wall push plate more stable during rotation, avoid impact on the hole wall due to sudden force or too fast rotation, and further enhance the stability of the hole wall.

[0024] The soil removal auxiliary device arranged on the drill core of the drill includes a soil removal auxiliary wheel and a soil removal driving device. The soil removal driving device drives the soil removal auxiliary wheel to rotate towards the reaming cutter direction, which can timely remove the soil attached to the drill, reduce the resistance of the soil to the drill, improve the rotation efficiency of the drill, and also facilitate the cleaning of the hole for smooth construction. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings, which are included to provide a further understanding of the present application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and serve to explain the present application. They must not be considered in any way limiting of the present application.

[0026] In the drawings:

[0027] Figure 1 is a schematic diagram of a pile foundation reaming drill Figure 1 ;

[0028] Figure 2 is a schematic diagram of a pile foundation reaming drill Figure 2 ;

[0029] Figure 3 is a schematic diagram of a pile foundation reaming drill Figure 3 ;

[0030] Figure 4 is a schematic diagram of a pile foundation reaming drill Figure 4 ;

[0031] Figure 5 is a schematic diagram of a pile foundation reaming drill Figure 5 ;

[0032] Figure 6 Schematic diagram of pile foundation reaming drill Figure 6

[0033] Figure 7 Schematic diagram of pile foundation reaming drill.

[0034] In the figure:

[0035] 1, cutting drill; 11, cutting cutter barrel; 111, cutting cutter edge; 1111, cutting cutter head; 112, cutting thread;

[0036] 2, reaming drill; 21, drill core; 211, accommodating groove; 212, reaming auxiliary rod; 2121, reaming auxiliary cutter; 213, connecting rib; 2131, reinforcing rib; 214, joint connecting table; 2141, connecting port; 22, reaming cutter barrel; 221, reaming cutter edge; 2211, reaming cutter head; 222, reaming thread; 23, drilling driving device; 24, soil removal auxiliary device; 241, soil removal auxiliary wheel; 242, soil removal driving device;

[0037] 3, hole wall stabilizing device; 31, top wall unit; 311, top wall pushing tool; 3111, top wall pushing plate; 3114, hinged arm; 3112, connecting base; 3113, corner damping device; 312, top wall driving device; 3121, driving arm; 313, supporting base. DETAILED DESCRIPTION

[0038] The technical solutions of the present application will be described below in combination with the drawings of the present application. The described embodiments are only a part of the embodiments of the present application. All other embodiments obtained by those skilled in the art without creative labor based on the embodiments in the present application shall fall within the scope of protection of the present application.

[0039] As shown in the drawings, the present application provides a pile foundation reaming drill, comprising: Figures 1 to 7

[0040] The cutting drill 1 comprises a cutting cutter barrel 11, and the cutting cutter barrel 11 is provided with a cutting cutter edge 111;

[0041] The reaming drill 2 is fixedly connected with the cutting drill 1, and comprises a drill core 21 fixedly connected with the cutting cutter barrel 11, a reaming cutter barrel 22 sleeved on the drill core 21, and a reaming cutter head 2211 fixedly connected with the reaming cutter barrel 22. A drilling driving device 23 for driving the cutting drill 1 and the reaming drill 2 to rotate is arranged in the drill core 21, and a plurality of soil removal auxiliary devices 24 are arranged on the drill core 21;

[0042] ​​The hole wall stabilizing device 3 is arranged on the reaming tool 2, and includes a plurality of top wall units 31 arranged at equal angles on the reaming tool 2. The top wall unit 31 includes a top wall pushing tool 311 rotatably arranged on the reaming cutter barrel 22, and a top wall driving device 312 fixedly arranged on the tool core 21.

[0043] The pile foundation reaming tool 2 is a comprehensive construction tool integrating cutting, reaming and hole wall stabilizing functions. The pile foundation reaming tool 2 is mainly composed of the cutting tool 1, the reaming tool 2 and the hole wall stabilizing device 3. The parts are connected by precise mechanical connection and work together to ensure efficient and stable drilling and reaming in complex pile foundation construction environment, and to ensure the integrity of the hole wall, thereby providing a solid foundation for subsequent pile foundation construction.

[0044] As shown in Figures 1 to 7 In the embodiment, the top wall pushing tool 311 includes a top wall pushing plate 3111 rotatably connected to the reaming tool 2. The top wall pushing plate 3111 is fixedly provided with a hinged arm 3114. One end of the top wall driving device 312 is provided with a driving arm 3121 rotatably connected to the hinged arm 3114. The top wall driving device 312 pushes the driving arm 3121 to move along the length direction.

[0045] The top wall unit 31 includes a support base 313 fixedly arranged on the reaming cutter barrel 22. The top wall pushing plate 3111 is provided with a connecting base 3112 rotatably connected to the support base 313. A rotation angle damping device 3113 is arranged between the support base 313 and the connecting base 3112. The top wall driving device 312 pushes the driving arm 3121 to move along the length direction, so that the top wall pushing plate 3111 rotates relative to the support base 313.

[0046] Specifically, the top wall pushing plate 3111 is made of high-strength steel plate and has a certain thickness and rigidity. In the embodiment, the top wall pushing plate 3111 is arranged in a circular arc shape, and a support rib is arranged on the inner side of the top wall pushing plate 3111 to increase the rigidity of the top wall pushing plate 3111 when it extrudes the hole wall. In some other embodiments (not shown in the figure), the top wall pushing plate can be arranged in any geometric shape required by the scene.

[0047] Specifically, the top wall push plate 3111 is fixedly provided with a hinged arm 3114 made of alloy steel and fixed to the top wall push plate 3111 by welding or bolt connection. One end of the top wall driving device 312 is provided with a driving arm 3121 that rotates to connect the hinged arm 3114, and the driving arm 3121 is made of high-strength steel or alloy steel. The top wall push plate 3111 is provided with a connecting base 3112 that rotates to connect the support base 313, and the connecting base 3112 is connected to the support base 313 by a bearing or a knuckle bearing. A corner damping device 3113 is arranged between the support base 313 and the connecting base 3112, and the corner damping device 3113 is usually a hydraulic damper or a spring damper, which can control the rotation speed and angle of the top wall push plate 3111.

[0048] In this embodiment, the main function of the top wall unit 31 is to support and stabilize the hole wall during hole reaming, preventing the hole wall from collapsing and falling. The top wall driving device 312 moves along the length direction through the push driving arm 3121, drives the top wall push plate 3111 to rotate relative to the support base 313, makes the top wall push plate 3111 contact and press the hole wall, and provides support force. The corner damping device 3113 can ensure the stability of the support and avoid sudden rotation of the top wall push plate 3111 due to excessive force.

[0049] In this embodiment, the hole wall stabilizing device 3 effectively prevents the hole wall from collapsing and ensures the stability of the shape and size of the pile foundation hole. In actual construction, construction workers can control the pressure applied to the hole wall by the top wall unit 31 according to specific needs to adapt to different geological conditions and construction requirements.

[0050] In this embodiment, one end of the top wall driving device 312 is fixedly arranged on the joint connecting table 214 of the drill core 21, which is usually a hydraulic cylinder or an electric push rod and other power equipment. The hydraulic cylinder is controlled by a high-precision hydraulic system and can provide accurate pushing force. The range of the pushing force is designed according to the needs of the top wall push plate 3111. The electric push rod is driven by a DC motor and has the advantages of simple structure and convenient control.

[0051] The top wall driving device 312 provides power for the movement of the top wall pusher 311, controls the position and angle of the top wall push plate 3111, and realizes effective support of the hole wall; ensures the reliable operation of the top wall unit 31 and can adjust the support force according to actual needs. In actual construction, the top wall driving device 312 can quickly respond to changes in the hole wall and timely adjust the position of the top wall push plate 3111 to ensure the stability of the hole wall.

[0052] As Figure 2 , Figure 4 and Figure 5As shown, in this embodiment, a plurality of connecting ribs 213 are fixedly connected between the drill core 21 and the reamer barrel 22, and the connecting ribs 213 and the support base 313 are provided with reinforcing ribs 2131.

[0053] Specifically, the connecting ribs 213 are generally made of high-strength steel bars or alloy steel strips, in a strip structure, with certain strength and rigidity. The number of connecting ribs 213 is designed according to the specifications and stress conditions of the drill, generally between 4 to 8. The connecting ribs 213 and the support base 313 are provided with reinforcing ribs 2131, which are in a triangular or truss structure, further enhancing the stability of the connecting part.

[0054] Among them, the connecting rib 213 plays a role in connecting the drill core 21 and the reamer barrel 22, ensuring the relative position stability between the two, and transmitting the rotary power. The reinforcing rib 2131 enhances the connection strength between the connecting rib 213 and the support base 313, preventing loosening or breaking during drilling. It improves the overall structural strength and stability of the reaming drill 2, so that the drill can maintain normal working condition when subjected to large external force and torque. In actual construction, the connecting rib 213 and the reinforcing rib 2131 can effectively reduce the deformation and damage of the drill, prolong the service life of the drill.

[0055] As shown, Figure 7 In this embodiment, the reamer barrel 22 is provided with a reamer lip 221 facing the cutting drill 1, and the drill core 21 is provided with a plurality of accommodating grooves 211 corresponding to the soil removal auxiliary device 24. The soil removal auxiliary device 24 includes a soil removal auxiliary wheel 241 and a soil removal driving device 242 for driving the soil removal auxiliary wheel 241 to rotate towards the direction of the reamer lip 221. At least part of the soil removal auxiliary wheel 241 is arranged in the accommodating groove 211, and the soil removal driving device 242 is arranged in the drill core 21.

[0056] Specifically, at least part of the soil removal auxiliary wheel 241 is arranged in the accommodating groove 211 on the drill core 21, and the soil removal auxiliary wheel 241 is made of high-strength rubber or metal material, and the surface is provided with protrusions or patterns to increase the friction with the soil. The shape and size of the protrusions or patterns are designed according to the properties of the soil. In soft soil foundation, the protrusions can be designed to be smaller and denser; in hard soil foundation, the protrusions can be designed to be larger and sparser.

[0057] The soil removal auxiliary wheel 241 rotates towards the direction of the reaming cutter lip 221 under the driving of the soil removal driving device 242, can strip the soil attached to the reaming cutter barrel 22 and the cutting cutter barrel 11, prevent the soil from blocking the drilling tool, and ensure the smooth drilling. The soil removal auxiliary wheel 241 effectively reduces the adhesion of the soil to the drilling tool, reduces the drilling resistance, and improves the soil removal efficiency. In actual construction, the soil removal auxiliary wheel 241 can timely remove the soil on the drilling tool, avoid the soil removal blockage caused by the soil blockage, and reduce the time consumed for soil removal.

[0058] In the embodiment, the soil removal driving device is arranged in the drilling tool core, and is generally a power device such as a motor or a hydraulic cylinder, and is connected with a rotating shaft for driving the soil removal auxiliary wheel to rotate. The motor is a direct current motor or an alternating current motor, and the power is selected according to the rotation requirement of the soil removal auxiliary wheel. The hydraulic cylinder is designed according to the soil removal force and stroke requirement, and can provide sufficient power to drive the soil removal auxiliary wheel to rotate.

[0059] In the embodiment, the soil removal auxiliary device 24 provides rotating power for the soil removal auxiliary wheel 241, so that the soil removal auxiliary wheel 241 can normally work and realize the soil removal function. The reliable operation of the soil removal auxiliary device 24 is ensured, and the soil removal efficiency is improved. In actual construction, the soil removal driving device 242 can timely adjust the rotating speed and direction of the soil removal auxiliary wheel 241 according to the drilling condition, and ensure the soil removal effect.

[0060] As shown in Figures 1 to 7 In the embodiment, the joint connecting table 214 is arranged on the drilling tool core 21, one end of the top wall driving device 312 is fixedly arranged on the joint connecting table 214, and the joint connecting table 214 is provided with a connecting port 2141.

[0061] Specifically, the joint connecting table 214 is made of high-strength alloy steel and has a platform structure, and has certain strength and rigidity. The surface of the joint connecting table 214 is precisely machined to ensure the connection accuracy with other components. The joint connecting table 214 is provided with mounting holes and positioning pins for mounting and fixing the top wall driving device 312 and other components. The joint connecting table 214 provides a fixed platform for component mounting, ensures the connection stability and reliability between components, makes the structure of the drilling tool more compact, and is convenient for installation and maintenance. In actual construction, the joint connecting table 214 can bear the force and torque transmitted by the components, and ensures the overall performance of the drilling tool.

[0062] Specifically, the connecting port 2141 is usually a standard interface, such as a threaded interface or a quick connection interface. The threaded interface adopts metric or imperial threads, has high connection strength and sealing performance. The quick connection interface adopts a clamp or latch structure, and can quickly realize the connection and disassembly of the drilling tool and other equipment. It is used for connection with other equipment or components, such as connection with a drill rod, a mud delivery pipe, etc., to realize the cooperation of the drilling tool and other equipment; facilitates the assembly and disassembly of the drilling tool, and improves the construction efficiency. In actual construction, the connecting port 2141 can ensure the close connection between the drilling tool and other equipment, ensure that the drill rod can stably transmit power during drilling, and thus ensure the normal construction.

[0063] As shown in Figure 3 and Figure 7 In this embodiment, a plurality of reaming auxiliary rods 212 are arranged between the drilling tool core 21 and the reaming cutter barrel 22, and a reaming auxiliary cutter 2121 is arranged on each reaming auxiliary rod 212.

[0064] Specifically, a plurality of reaming auxiliary rods 212 are arranged between the drilling tool core 21 and the reaming cutter barrel 22, the reaming auxiliary rods 212 are made of high-strength alloy steel and are in the shape of an elongated rod, and the length is designed according to the specifications of the drilling tool and the reaming requirements. A reaming auxiliary cutter 2121 is arranged on each reaming auxiliary rod 212, and the shape and size of the reaming auxiliary cutter 2121 are designed according to the actual reaming requirements. Usually, it is in the shape of a small cone, and the blade is made of hard alloy material and has a certain sharpness and wear resistance.

[0065] In this embodiment, the reaming auxiliary rods 212 and the reaming auxiliary cutters 2121 play a role in assisting reaming during the reaming process, can further crush the soil body, enlarge the hole diameter, and improve the reaming efficiency. Especially in hard ground, the reaming auxiliary cutter 2121 can assist the reaming cutter head 2211 to more effectively crush the soil body; cooperates with the reaming cutter barrel 22 and the reaming cutter head 2211 to make the reaming process more uniform and complete. In actual construction, the reaming auxiliary rods 212 and the reaming auxiliary cutters 2121 can reduce the resistance in the reaming process, improve the reaming speed, and ensure the quality of the pile foundation hole.

[0066] As shown in Figures 1 to 6 In this embodiment, a cutting thread 112 is fixedly arranged on the inner and outer surfaces of the cutting cutter barrel 11, and a cutting cutter head 1111 is fixedly arranged on the cutting cutter lip 111. A reaming thread 222 is fixedly arranged on the inner and outer surfaces of the reaming cutter barrel 22, and a reaming cutter head 2211 is fixedly arranged on the reaming cutter lip 221.

[0067] Specifically, the cutting blade barrel 11 is made of high-strength alloy steel and has a cylindrical shape. The wall thickness is designed according to the actual construction requirements and strength requirements. The inner and outer surfaces are provided with cutting threads 112 through precise machining. The pitch, profile, and depth of the threads are optimized to meet the cutting needs in different geological conditions. For example, in soft soil, the thread pitch can be appropriately increased to improve the soil removal efficiency; in hard soil, the thread profile can be designed to be sharper to enhance the cutting ability.

[0068] As the main part of the cutting drill 1, the cutting blade barrel 11 not only provides a stable mounting base for the cutting blade edge 111, but also preliminarily breaks and cuts the soil through its own cutting threads 112 during drilling. At the same time, it bears the axial force and torque generated during drilling, ensuring the overall structural stability of the cutting drill 1.

[0069] In this embodiment, the design of the cutting threads 112 effectively increases the contact area and cutting force between the cutting drill 1 and the soil, making the drilling process smoother and reducing the drilling resistance. In actual construction, it can significantly improve the drilling efficiency, especially in soft soil, the cutting threads 112 can quickly break and remove the soil outside the hole.

[0070] In this embodiment, the cutting blade edge 111 is fixedly arranged at the front end of the cutting blade barrel 11 and is made of integral forging process, which has high strength and toughness. A plurality of cutting bits 1111 are fixedly arranged on the cutting blade edge 111, which are usually made of hard alloy materials such as tungsten-cobalt alloy, and have sharp wedge or cone shapes to enhance the cutting ability. The cutting bits 1111 are fixed on the cutting blade edge 111 by high-strength bolts or welding process to ensure that they do not loosen during drilling.

[0071] In this embodiment, the cutting blade edge 111 is the key part of the cutting drill 1 that directly contacts and cuts the soil, and the cutting bits 1111 further enhance the cutting performance of the cutting blade edge 111. During drilling, the cutting bits 1111 can quickly and accurately cut into the soil, breaking it into small pieces to create conditions for subsequent soil removal and hole expansion operations.

[0072] In this embodiment, the sharp shape and high-hardness material of the cutting bits 1111 make it easy to cut into soil of various geological conditions, improving the accuracy and quality of drilling. In actual construction, the cooperation of the cutting blade edge 111 and the cutting bits 1111 can effectively reduce the deviation of drilling, ensuring that the verticality and diameter of the pile foundation hole meet the design requirements.

[0073] Specifically, the drill core 21 is the core component of the entire reamer 2, made of high-strength alloy steel, in a cylindrical shape. Inside is provided with a drilling driving device 23, which is usually a high-performance motor or hydraulic motor, the power is selected according to the specifications of the drill and the construction requirements. The motor or hydraulic motor is connected to the drill core 21 through a speed reducer and a shaft coupling, and transmits power to the drill. At the same time, the drill core 21 is provided with a plurality of soil removal auxiliary devices 24 and a containing groove 211, the size and shape of the containing groove 211 are designed according to the size and installation requirements of the soil removal auxiliary wheel 241.

[0074] In addition, the drill core 21 is also provided with a joint connection table 214, which is designed with reinforcement, has high strength and rigidity, and is provided with a connection port 2141, which is usually a standard threaded interface or a quick connection interface, for connecting with other equipment or components.

[0075] The drill core 21 plays a role in supporting and connecting other components, providing rotary power for the entire drill through the drilling driving device 23, realizing the functions of drilling and reaming. The containing groove 211 provides installation space for the soil removal auxiliary device 24, and the joint connection table 214 facilitates the connection and cooperation of the drill with other equipment; ensures the power source and structural stability of the reamer 2, so that the drill can work normally under complex geological conditions. At the same time, it provides convenience for the installation of components such as soil removal auxiliary devices 24, and improves the overall performance of the drill. In actual construction, the stable operation of the drill core 21 can ensure the continuity and accuracy of drilling and reaming.

[0076] In this embodiment, the reamer barrel 22 is sleeved on the drill core 21, made of high-strength wear-resistant material, in a cylindrical shape, and the wall thickness is slightly thicker than that of the cutting barrel 11. The inner and outer surfaces are provided with reaming threads 222 through precision machining, and the pitch, tooth type and depth of the reaming threads 222 are different from those of the cutting threads 112, and more attention is paid to the reaming effect and soil discharge. The reamer barrel 22 is provided with a reaming blade 221 facing the cutting drill 1, and a plurality of reaming heads 2211 are fixedly arranged on the reaming blade 221, which are also made of hard alloy material, and the shape is designed according to the reaming requirements, generally in the shape of a wide blade, to increase the reaming area.

[0077] In this embodiment, the reamer barrel 22 is rotated under the driving of the drill core 21, expands the drilled hole through the reaming thread 222 and the reamer head 2211, and forms a pile foundation hole diameter meeting the design requirements. The cooperation of the reamer edge 221 and the reamer head 2211 can accurately control the size and shape of the reaming; the pile foundation hole is expanded, and the bearing capacity of the pile foundation is improved. The synergistic effect of the reaming thread 222 and the reamer head 2211 makes the reaming process more efficient and stable. In actual construction, the reamer barrel 22 can uniformly expand the hole diameter to ensure the quality and size accuracy of the pile foundation hole.

[0078] The present application has many use scenarios, including but not limited to the following described scenarios:

[0079] In various types of construction engineering, such as high-rise buildings, commercial complexes, etc., pile foundation construction is needed to provide a stable bearing foundation. The pile foundation reaming drill can quickly and efficiently complete the drilling and reaming of the pile foundation, especially suitable for engineering with complex geological conditions and high-quality pile foundations, which can ensure the bearing capacity and stability of the pile foundation.

[0080] Bridge engineering has very high requirements for the foundation, and needs deep and stable pile foundations to support the bridge structure. The hole wall stabilizing device of the drill can effectively prevent hole wall collapse and ensure safety in deep hole construction, while its efficient cutting and reaming capacity can meet the requirements of bridge engineering for construction progress and quality.

[0081] In some areas with poor geological conditions, such as soft soil, sandy soil, and silt soil, the hole wall is prone to instability, and traditional drill construction is difficult and has low safety. The hole wall stabilizing device and soil removal auxiliary device of the pile foundation reaming drill can well adapt to such geological conditions, effectively solve the problems of hole wall collapse and soil adhesion, and improve the feasibility and safety of construction.

[0082] For large-scale infrastructure projects such as ports, wharfs, airports, etc., the pile foundation engineering scale is large and the quality requirements are high. The integrated design and efficient construction capacity of the drill can meet the needs of large-scale pile foundation construction, shorten the construction period, reduce the construction cost, and at the same time ensure the quality and stability of the pile foundation, providing reliable foundation support for the construction of large-scale infrastructure.

Claims

1. A pile reaming tool, characterized in that, The application relates to a cutting drill tool, a reaming drill tool, a hole wall stabilizing device and a cutting drill tool and a reaming drill tool. The cutting drill tool comprises a cutting bit barrel provided with a cutting bit mouth. The reaming drill tool is fixedly connected with the cutting drill tool and comprises a drill tool core fixedly connected with the cutting bit barrel, a reaming bit barrel sleeved on the drill tool core, and a reaming bit head fixedly connected with the reaming bit barrel. The hole wall stabilizing device is arranged on the reaming drill tool and comprises a plurality of top wall units arranged at equal angles on the reaming drill tool. The top wall unit comprises a top wall pushing tool rotatably arranged on the reaming bit barrel and a top wall driving device fixedly arranged on the drill tool core. The top wall pushing tool comprises a top wall pushing plate rotatably connected with the reaming drill tool. The top wall pushing plate is fixedly provided with a hinged arm.

2. A pile reamer as claimed in claim 1, wherein, One end of the top wall driving device is provided with a driving arm rotatably connected with the hinged arm.

3. A pile reamer as claimed in claim 2, wherein, The top wall driving device pushes the driving arm to move along the length direction.

4. A pile reamer as claimed in claim 1, wherein, The top wall unit comprises a supporting base fixedly arranged on the reaming bit barrel.

5. A pile reamer as claimed in claim 1, wherein, The top wall pushing plate is provided with a connecting base rotatably connected with the supporting base.

6. A pile reamer as claimed in claim 1, wherein, An angle damping device is arranged between the supporting base and the connecting base. The top wall driving device pushes the driving arm to move along the length direction so that the top wall pushing plate rotates relative to the supporting base. The reaming bit barrel is provided with a reaming bit mouth facing the cutting drill tool. A plurality of accommodating grooves corresponding to the soil removal auxiliary devices are arranged on the drill tool core. The soil removal auxiliary device comprises a soil removal auxiliary wheel and a soil removal driving device for driving the soil removal auxiliary wheel to rotate towards the reaming bit mouth. At least part of the soil removal auxiliary wheels are arranged in the accommodating grooves. The soil removal driving device is arranged in the drill tool core. The drill tool core and the reaming bit barrel are fixedly connected with a plurality of connecting ribs arranged at equal angles. The connecting ribs and the supporting base are provided with reinforcing ribs. A joint connecting table is arranged on the drill tool core. One end of the top wall driving device is fixedly arranged on the joint connecting table. A connecting port is arranged on the joint connecting table. A plurality of reaming auxiliary rods are arranged between the drill tool core and the reaming bit barrel. A reaming auxiliary bit is arranged on the reaming auxiliary rod. Cutting threads are fixedly arranged on the inner and outer surfaces of the cutting bit barrel. A cutting bit head is fixedly arranged on the cutting bit mouth. Reaming threads are fixedly arranged on the inner and outer surfaces of the reaming bit barrel. A reaming bit head is fixedly arranged on the reaming bit mouth.

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