Long-arm drilling machine

Abstract

The invention relates to a long-arm rotary drilling rig which aims at solving the problems that a traditional drilling rig is single in function and poor in site adaptability. The drilling machine comprises a crawler walking lower chassis, an upper chassis, a cab, a counterweight module, a power assembly, a hydraulic pump station and a mechanical arm and is characterized in that a mast is arranged at the front end of the mechanical arm, the middle of the mast is rotationally connected with the mechanical arm, the top of the mast is connected through an oil cylinder, and meanwhile the tail end of the mechanical arm is rotationally connected with the upper chassis and provided with a driving oil cylinder. And a power head is arranged on the outer side of the mast, is dragged by a steel wire rope and is connected with a winch. The mast can be connected continuously, and the balancing weight is adjustable. During operation, the mechanical arm and the mast are cooperatively adjusted, the power head drives the drill rod to rotate, and the winch controls the drill rod to move up and down. And during transition, the drilling tool is lifted, the mechanical arm and the mast are retracted, and the crawler belt is utilized to walk to the next station. The maneuverability of the excavator and the professionality of the rotary drilling rig are integrated, the drilling operation is flexible and efficient, the transition is convenient, and the construction efficiency and the field adaptability are remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of drilling rig equipment, in particular to the body part of a drilling rig, and specifically to a long-arm drilling rig. BACKGROUND

[0002] In the field of engineering construction, the traditional rotary drilling rig is a common foundation construction equipment, which is specially designed for pile foundation construction and can play a good performance in piling operation in specific scenarios. However, the traditional rotary drilling rig has some limitations, mainly reflected in its narrow application range, which can only be used in specific pile foundation construction scenarios, and is difficult to adapt to diversified and complex engineering construction needs, limiting the flexibility and diversity of construction. In addition, the traditional rotary drilling rig is usually large in size, complex in structure and heavy in weight, and has high requirements for the flatness and bearing capacity of the construction site. In areas with complex terrain, large undulations or small sites, its entry and normal operation will be greatly limited, and even cannot be constructed, thereby affecting the smooth progress of the project. From the perspective of equipment cost, the purchase cost of the traditional rotary drilling rig is high, and the maintenance is also complex and expensive. However, due to its single function, the equipment may be idle for a long time in some engineering projects, which cannot be fully utilized, resulting in the increase of unit construction cost of the equipment and the reduction of economic benefits. With the continuous development of the engineering construction industry, construction projects tend to use multifunctional, integrated and efficient equipment to improve construction efficiency, reduce costs and meet diversified construction needs. However, the traditional rotary drilling rig has deficiencies in function integration and equipment collaborative operation, which is difficult to match the modern construction concept and needs, and cannot provide comprehensive and efficient construction solutions for engineering. SUMMARY

[0003] The purpose of the present application is to overcome the above-mentioned defects, combine the drilling tool with the ordinary crawler excavator boom, and break through the limitations of the traditional rotary drilling rig to achieve wider applicability, higher construction efficiency and better economic benefits.

[0004] In order to achieve the above-mentioned purpose, the present application is implemented as follows: A long-arm rotary drilling rig includes a tracked undercarriage (1), an upper chassis (2) rotatably connected to the tracked undercarriage (1), a cab (3) mounted on the upper chassis (2), a counterweight module (4), a powertrain (5), and a hydraulic pump station (6) located behind the cab (3). The rig is characterized by further including a robotic arm (7) located in front of the cab (3), with a mast (8) at the front end of the robotic arm (7). The middle part of the mast (8) is rotatably connected to the robotic arm (7), and the top of the mast (8) is connected to the robotic arm (7). The middle part is connected by a pair of hydraulic cylinders (9). The tail end of the mechanical arm (7) is rotatably connected to the upper chassis (2), and a drive hydraulic cylinder (10) is provided between the mechanical arm (7) and the upper chassis (2). A crane (11) is provided at the top of the mast (8). A power head (12) for clamping and driving the drill pipe is provided on the outside of the mast (8). The power head (12) is pulled by a wire rope (13). The wire rope (13) passes through the crane (11) and is connected to the winch (14). The winch (14) is fixed on the mast (8).

[0005] The long-arm rotary drilling rig has a mast (8) connected to the mechanical arm (7) in the middle via a slewing bearing (15). The inner ring of the slewing bearing (15) is fixed to the mast (8), and the outer ring is fixed to the mechanical arm (7), so that the mast (8) can rotate flexibly relative to the mechanical arm (7), while ensuring the stability and load-bearing capacity of the connection, so as to adapt to different angles and force requirements during the drilling operation.

[0006] The long-arm rotary drilling rig includes a power head (12) comprising a clamping device (16) and a drive device (17). The clamping device (16) adopts a hydraulically driven multi-jaw chuck structure, which can firmly clamp drill rods of different specifications, ensuring that the drill rods will not loosen when rotating and subjected to axial force. The drive device (17) is a hydraulic motor, which drives the drill rod to rotate at high speed through gear transmission, thereby realizing the power output required for drilling operations. The hydraulic motor has the advantages of large torque, compact structure, and fast response, which can effectively improve drilling efficiency and quality.

[0007] The long-arm rotary drilling rig has a winch (14) fixed to the mast (8) by a fixed bracket (18). The fixed bracket (18) is a square frame structure welded to the side of the mast (8) and has multiple reinforcing ribs to enhance the connection strength. The winch (14) is installed in the fixed bracket (18) and is tightly connected to the fixed bracket (18) by bolts to ensure that the winch (14) is stable and reliable during operation and can withstand the large tension generated when the wire rope (13) is wound up and down. At the same time, the design of the fixed bracket (18) also facilitates the installation, disassembly and maintenance of the winch (14).

[0008] The long-arm rotary drilling rig has at least two drive cylinders (10) between the mechanical arm (7) and the upper chassis (2). These drive cylinders (10) are evenly distributed along the length of the mechanical arm (7). Through synchronous control by the hydraulic system, the mechanical arm (7) can smoothly and accurately adjust its angle to meet the drilling requirements of different depths and positions. At the same time, the arrangement of multiple drive cylinders (10) can share the force, improve the overall load-bearing capacity and operational stability of the mechanical arm (7), and extend the service life of the equipment.

[0009] The long-arm rotary drilling rig has a mast (8) bottom connected to the front end of the robotic arm (7) via a connecting flange (19). The connecting flange (19) has multiple high-strength bolt holes. The mast (8) and the robotic arm (7) are tightly connected together using high-strength bolts to ensure the strength and rigidity of the connection and to effectively transmit torque and axial force during the drilling process. At the same time, the structure of the connecting flange (19) facilitates the assembly and disassembly of the mast (8) and the robotic arm (7), which is beneficial for the transportation, installation and maintenance of the equipment and improves the maintainability and flexibility of the equipment.

[0010] In any of the above-mentioned long-arm rotary drilling rigs, the mast (8) is a connectable structure. By setting the end of the two masts (8) with the prefabricated connecting structure (20), the two short masts (8) can be spliced ​​into a longer mast (8) to meet different drilling depth requirements. When the mast (8) is lengthened, according to the requirements of the overall machine weight distribution, the weight of the counterweight block (21) can be added to the counterweight module (4) behind the cab (3) to ensure the balance and operational stability of the whole machine.

[0011] The extended-arm rotary drilling rig proposed in this invention integrates the drilling tool with the boom of a conventional crawler excavator, combining the excavator's maneuverability with the specialized drilling capabilities of a rotary drilling rig. This significantly expands the application scenarios of traditional rotary drilling rigs, easily handling complex and varied construction sites and diverse engineering needs. The connection design between the robotic arm and the mast allows for more flexible and precise adjustment of the drilling angle and depth, adapting to different construction requirements. The extendable mast and adjustable counterweight design not only meet the needs of deep-hole operations but also ensure the balance and stability of the entire machine under different working conditions, avoiding instability caused by the extended mast and significantly improving operational safety and reliability. The power head, through the cooperation of wire rope, overhead crane, and winch, achieves precise clamping and efficient drive of the drill rod, ensuring stable drilling progress and effectively improving construction efficiency and quality. Overall, this rotary drilling rig achieves innovative breakthroughs in functional integration, operational flexibility, adaptability, and safety, providing a more efficient and reliable solution for engineering construction. Attached Figure Description

[0012] Figure 1This is a schematic diagram of the structure of the long-arm rotary drilling rig shown in this invention. Figure 1 .

[0013] Figure 2 This is a schematic diagram of the structure of the long-arm rotary drilling rig shown in this invention. Figure 2 .

[0014] Figure 3 This is a schematic diagram of the traveling state of the long-arm rotary drilling rig shown in this invention. Figure 3 . Detailed Implementation

[0015] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0016] As shown in Figure 1, a long-arm rotary drilling rig includes a tracked undercarriage 1, an upper chassis 2 rotatably connected to the tracked undercarriage 1, a cab 3 mounted on the upper chassis 2, a counterweight module 4, a powertrain 5, and a hydraulic pump station 6 located behind the cab 3; it also includes a robotic arm 7 located in front of the cab 3. A mast 8 is provided at the front end of the robotic arm 7, the middle part of the mast 8 is rotatably connected to the robotic arm 7, and the top of the mast 8 is connected to the middle part of the robotic arm 7 through a pair of hydraulic cylinders 9. At the same time, the tail end of the robotic arm 7 is rotatably connected to the upper chassis 2, and a drive hydraulic cylinder 10 is also provided between the robotic arm 7 and the upper chassis 2. Furthermore, a crane 11 is installed at the top of the mast 8, and a power head 12 for clamping and driving the drill pipe is installed on the outside of the mast 8. The power head 12 is pulled by a wire rope 13, which passes through the crane 11 and is connected to a winch 14, which is fixed on the mast 8.

[0017] The middle part of the mast 8 is rotatably connected to the robotic arm 7 via a slewing bearing 15. The inner ring of the slewing bearing 15 is fixed to the mast 8, and the outer ring is fixed to the robotic arm 7, so that the mast 8 can rotate flexibly relative to the robotic arm 7, while ensuring the stability and load-bearing capacity of the connection to adapt to different angles and force requirements during the drilling operation.

[0018] The power head 12 includes a clamping device 16 and a drive device 17. The clamping device 16 adopts a hydraulically driven multi-jaw chuck structure, which can firmly clamp drill rods of different specifications and ensure that the drill rods will not loosen when rotating and subjected to axial force. The drive device 17 is a hydraulic motor, which drives the drill rod to rotate through gear transmission and moves up and down along the mast under the traction of the winch and wire rope, realizing the power output required for drilling operations. The hydraulic motor has the advantages of large torque, compact structure and fast response, which can effectively improve drilling efficiency and quality.

[0019] The winch 14 is fixed to the mast 8 by a fixed bracket 18. The fixed bracket 18 is a square frame structure welded to the side of the mast 8, and has multiple reinforcing ribs to enhance the connection strength. The winch 14 is installed inside the fixed bracket 18 and is tightly connected to the fixed bracket 18 by bolts to ensure that the winch 14 is stable and reliable during operation and can withstand the large tension generated when the wire rope 13 is wound up and down. At the same time, the design of the fixed bracket 18 also facilitates the installation, disassembly and maintenance of the winch 14.

[0020] At least two drive cylinders 10 are installed between the robotic arm 7 and the upper chassis 2. These drive cylinders 10 are evenly distributed along the length of the robotic arm 7 and are synchronously controlled by the hydraulic system, enabling the robotic arm 7 to adjust its angle smoothly and accurately to meet the drilling requirements at different depths and positions. At the same time, the arrangement of multiple drive cylinders 10 can share the force, improve the overall load-bearing capacity and operational stability of the robotic arm 7, and extend the service life of the equipment.

[0021] The bottom of the mast 8 is connected to the front end of the robotic arm 7 via a connecting flange 19. The connecting flange 19 has multiple high-strength bolt holes, and the mast 8 and the robotic arm 7 are tightly connected together using high-strength bolts to ensure the strength and rigidity of the connection and effectively transmit torque and axial force during the drilling process. At the same time, the structure of the connecting flange 19 facilitates the assembly and disassembly of the mast 8 and the robotic arm 7, which is beneficial for the transportation, installation and maintenance of the equipment, and improves the maintainability and flexibility of the equipment.

[0022] like Figure 2 As shown, the mast 8 is a connectable structure. By setting the end of the two masts 8 with the prefabricated connecting structure 20, the two short masts 8 can be spliced ​​into a longer mast 8, thereby meeting different drilling depth requirements. When the mast 8 is lengthened, according to the requirements of the overall machine weight distribution, the weight of the counterweight block 21 can be added to the counterweight module 4 behind the cab 3 to ensure the balance and operational stability of the whole machine.

[0023] When using the rotary drilling rig of the present invention, the equipment is first moved to the designated working position via the tracked chassis 1. The powertrain 5 and hydraulic pump station 6 are started to provide power for the entire drilling operation. The operator in the cab 3 controls the drive cylinder 10 between the tail end of the robotic arm 7 and the upper chassis 2 via the control handle to adjust the robotic arm 7 to a suitable angle and position. At the same time, by controlling a pair of cylinders 9 at the top of the mast 8 and the middle of the robotic arm 7, the angle of the mast 8 relative to the robotic arm 7 is adjusted to ensure that the mast 8 is in the optimal working posture.

[0024] During operation, the power head 12 first clamps the drill rod with the clamping device 16, then the drive device 17 starts, causing the drill rod to rotate. Simultaneously, the winch 14, through the cooperation of the wire rope 13 and the overhead crane 11, controls the up-and-down movement of the drill rod. When drilling downwards is required, the winch 14 releases the wire rope 13, and under the assistance of the drill rod's own weight and the hydraulic system, the drill rod gradually drills downwards, while the power head 12 drives the drill rod to rotate and cut the rock and soil. When the borehole reaches the predetermined depth, the winch 14 is reversed to tighten the wire rope 13, lifting the drill rod from the hole, completing one drilling cycle.

[0025] like Figure 3 As shown, when drilling is completed at one workstation and the operator needs to move to the next workstation, the operator first uses the winch 14 to smoothly lift the drill bit, completely detaching it from the borehole. Next, the operator operates the drive cylinder 10 between the tail end of the robotic arm 7 and the upper chassis 2 to slowly retract the robotic arm 7. Simultaneously, the mast 8 gradually moves closer to the main body of the machine as the robotic arm 7 retracts, reducing the equipment's footprint. Then, using the tracked walking function of the tracked lower chassis 1, driven by the hydraulic system, the tracked lower chassis 1 smoothly moves the entire equipment to the next workstation. Upon arrival at the new workstation, the robotic arm 7 and mast 8 are adjusted to suitable working positions again, and a new round of drilling operations begins.

[0026] This design, which allows for flexible coordination between the tracks, mast, and robotic arm, greatly improves the efficiency and operational flexibility of rotary drilling rigs at construction sites. It enables them to quickly respond to different operational needs in complex construction environments, effectively improving the overall progress and efficiency of construction.

[0027] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A long-arm rotary drilling rig, comprising a tracked undercarriage (1), an upper chassis (2) rotatably connected to the tracked undercarriage (1), a cab (3) mounted on the upper chassis (2), a counterweight module (4), a powertrain (5), and a hydraulic pump station (6) located behind the cab (3), characterized in that: It also includes a mechanical arm (7) located in front of the cab (3). The front end of the mechanical arm (7) is provided with a mast (8). The middle part of the mast (8) is rotatably connected to the mechanical arm (7). The top of the mast (8) is connected to the middle part of the mechanical arm (7) through a pair of hydraulic cylinders (9). The tail end of the mechanical arm (7) is rotatably connected to the upper chassis (2), and a drive hydraulic cylinder (10) is provided between the mechanical arm (7) and the upper chassis (2). A crane (11) is provided at the top of the mast (8). A power head (12) for clamping and driving the drill pipe is provided on the outside of the mast (8). The power head (12) is pulled by a wire rope (13). The wire rope (13) passes through the crane (11) and is connected to a winch (14). The winch (14) is fixed on the mast (8).

2. The long-arm rotary drilling rig according to claim 1, characterized in that: The middle part of the mast (8) is rotatably connected to the robotic arm (7) through a slewing bearing (15). The inner ring of the slewing bearing (15) is fixed to the mast (8), and the outer ring is fixed to the robotic arm (7), so that the mast (8) can rotate flexibly relative to the robotic arm (7) while ensuring the stability and load-bearing capacity of the connection, so as to adapt to different angles and force requirements during the drilling operation.

3. The long-arm rotary drilling rig according to claim 1, characterized in that: The power head (12) includes a clamping device (16) and a driving device (17). The clamping device (16) adopts a hydraulically driven multi-jaw chuck structure, which can firmly clamp drill rods of different specifications and ensure that the drill rods will not loosen when rotating and subjected to axial force. The driving device (17) is a hydraulic motor, which drives the drill rod to rotate at high speed through gear transmission to realize the power output required for drilling operations. The hydraulic motor has the advantages of large torque, compact structure and fast response, which can effectively improve drilling efficiency and quality.

4. The long-arm rotary drilling rig according to claim 1, characterized in that: The winch (14) is fixed to the mast (8) by a fixed bracket (18). The fixed bracket (18) is a square frame structure welded to the side of the mast (8) and has multiple reinforcing ribs to enhance the connection strength. The winch (14) is installed in the fixed bracket (18) and is tightly connected to the fixed bracket (18) by bolts to ensure that the winch (14) is stable and reliable during operation and can withstand the large tension generated when the wire rope (13) is wound up and down. At the same time, the design of the fixed bracket (18) also facilitates the installation, disassembly and maintenance of the winch (14).

5. The long-arm rotary drilling rig according to claim 1, characterized in that: At least two drive cylinders (10) are provided between the robotic arm (7) and the upper chassis (2). These drive cylinders (10) are evenly distributed along the length of the robotic arm (7). Through synchronous control by the hydraulic system, the robotic arm (7) can smoothly and accurately adjust its angle to meet the drilling requirements of different depths and positions. At the same time, the arrangement of multiple drive cylinders (10) can share the force, improve the overall load-bearing capacity and operational stability of the robotic arm (7), and extend the service life of the equipment.

6. The long-arm rotary drilling rig according to claim 1, characterized in that: The bottom of the mast (8) is connected to the front end of the robotic arm (7) via a connecting flange (19). The connecting flange (19) has multiple high-strength bolt holes. The high-strength bolts are used to tightly connect the mast (8) and the robotic arm (7) together, ensuring the strength and rigidity of the connection and effectively transmitting torque and axial force during the drilling process. At the same time, the structure of the connecting flange (19) facilitates the assembly and disassembly of the mast (8) and the robotic arm (7), which is beneficial for the transportation, installation and maintenance of the equipment, and improves the maintainability and flexibility of the equipment.

7. The long-arm rotary drilling rig according to any one of claims 1 to 6, characterized in that: The mast (8) is a connectable structure. By setting the assembly-type connecting structure (20) at the ends of the two masts (8), the two short masts (8) can be spliced ​​into a longer mast (8) to meet different drilling depth requirements. When the mast (8) is lengthened, according to the requirements of the overall machine weight distribution, the weight of the counterweight block (21) can be added to the counterweight module (4) behind the cab (3) to ensure the balance and operational stability of the whole machine.

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