A special side swing mechanism for tunnel drilling and cracking machine

Abstract

The application discloses a special side swing mechanism of a tunnel drilling and cracking machine, and belongs to the field of tunnel engineering construction equipment. The mechanism is composed of an excavator boom connecting mechanism, a side swing oil cylinder assembly and a drilling and cracking integrated machine connecting mechanism. The drilling and cracking machine connecting mechanism is driven by the side swing oil cylinder to realize horizontal lateral swing. The rotation mechanism of the drilling and cracking integrated machine and the rotation of the excavator are coordinated to accurately control the posture of the drilling and cracking drill bit, so that the drilling is perpendicular to the tunnel face, and the surrounding holes and the side wall can be efficiently arranged. The application has the advantages of high rigidity, high precision, easy maintenance and high adaptability, and significantly improves the drilling and cracking construction efficiency and quality of the tunnel, and is suitable for the drilling and cracking integrated operation of various tunnel projects.

Description

Technical Field

[0001] This invention relates to the field of tunnel construction equipment technology, specifically to a special side-swing mechanism for tunnel drilling and splitting machines. Background Technology

[0002] In integrated drilling and fracturing construction of tunnels, the integrated drilling and fracturing machine is usually mounted on the end of an excavator boom. Existing technology has the following drawbacks: the excavator's posture is limited by the site, making it difficult to ensure the drilling bit is always perpendicular to the tunnel face; large borehole tilt deviations result in the inability to drill along the curvature of the tunnel arch, leading to poor surrounding rock fracturing, over-excavation or under-excavation, and low drilling and fracturing efficiency; the construction of peripheral holes and sidewalls requires frequent adjustments to the excavator's overall position, making the operation cumbersome and time-consuming, failing to meet the needs of rapid tunnel construction; the drilling and fracturing mechanism is rigidly and linearly connected to the excavator, lacking lateral swing adjustment capability, making it difficult to adapt to the drilling needs of different areas of the tunnel face, resulting in insufficient equipment adaptability and construction precision.

[0003] To address the aforementioned issues, this invention provides a dedicated side-swing mechanism for tunnel drilling and splitting machines. This mechanism achieves lateral posture adjustment through hydraulic drive, and, in conjunction with the overall rotation of the drilling and splitting machine and the slewing action of the excavator, efficiently ensures the vertical accuracy of drilling and splitting, as well as the drilling and splitting layout efficiency of peripheral holes and sidewalls. Summary of the Invention

[0004] This invention aims to solve the problems of poor adjustable drilling posture, low vertical accuracy, and insufficient efficiency of surrounding construction in existing tunnel drilling and splitting integrated machines. It provides a high-rigidity, high-precision, and easily adaptable side-swing mechanism. By linking the excavator rotation with the side-swing mechanism and the overall rotation of the drilling and splitting integrated machine, it enables precise and efficient construction of the drilling and splitting drill bit perpendicular to the tunnel face and surrounding holes and sidewalls.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A special side-swing mechanism for tunnel drilling and splitting machines includes: The excavator boom connecting mechanism is a heavy-duty connecting boom welded from thick plates, with hinge holes at the ends for hinged connection to the end of the excavator boom. The side-swing cylinder assembly includes a cylinder barrel, piston rod, tapered hinge joint, and stroke detection component. The cylinder barrel is hinged to the excavator boom connection mechanism, and the piston rod is connected to the drilling and splitting machine connection mechanism through the tapered hinge joint. The stroke detection component is integrated on the side of the cylinder barrel. The drilling and fracturing machine connection mechanism is a frame structure with a flange. The flange has mounting holes evenly distributed around its circumference, reinforcing ribs on the inside, and a maintenance window reserved at the bottom. It can swing horizontally laterally with the movement of the side-swing cylinder assembly.

[0006] Furthermore, the lateral swing angle range of the side-swing cylinder assembly is ±30° to ±45°.

[0007] Furthermore, the stroke detection component is a displacement sensor or a mechanical limit block, with a detection accuracy of ≥ ±0.1°.

[0008] Furthermore, the flange and reinforcing rib of the drilling and fracturing integrated machine connection mechanism are integrally cast or welded.

[0009] Furthermore, the hydraulic circuit interface of the side-swing cylinder assembly is connected to the excavator's hydraulic system, and the host machine provides power and controls the side-swing action.

[0010] Furthermore, the excavator boom connecting mechanism is equipped with reinforcing ribs to improve torsional and bending stiffness, making it suitable for heavy-duty tunnel drilling and fracturing conditions.

[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. Precise attitude control: The side-swing cylinder, in conjunction with the excavator's rotation, enables multi-angle adjustment of the fracturing drill bit in the horizontal direction. Combined with real-time feedback from the stroke detection component, it ensures that the borehole is precisely perpendicular to the working face, significantly improving the verticality of the borehole and the fracturing efficiency. 2. Efficient peripheral hole and sidewall construction: There is no need to frequently move the entire excavator. Peripheral holes can be quickly laid out by simply adjusting the angle of the side swing mechanism and the drilling and splitting machine, which simplifies the operation process and shortens the single cycle construction time. 3. High rigidity and reliability: The heavy-duty connecting arm with reinforcing ribs is adapted to the heavy-duty and high-frequency vibration conditions of tunnel drilling and fracturing construction, reducing the risk of structural deformation and fatigue failure. 4. Modular and easy to maintain: Each component adopts a hinged + bolt connection, and the side swing cylinder and connecting mechanism can be disassembled and installed independently, which facilitates fault diagnosis and component replacement and reduces operation and maintenance costs; 5. High adaptability: The flange-type drilling and fracturing machine connection interface is compatible with different models of integrated drilling and fracturing machines, expanding the application scenarios of the equipment. Attached Figure Description

[0012] Figure 1 is an isometric view of the overall assembly of the present invention; Figure 2 is a partial enlarged view of the side-swing cylinder assembly of the present invention; Figure 3 is a schematic diagram of the assembly of the present invention with an excavator and a drilling and splitting machine.

[0013] In the diagram: 1-Excavator boom connection mechanism, 2-Side swing cylinder assembly, 21-Cylinder barrel, 22-Piston rod, 23-Conical hinge joint, 24-Stroke detection component, 3-Drilling and splitting machine connection mechanism, 31-Flange, 32-Reinforcing rib, 33-Inspection window. Detailed Implementation

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] A special side-swing mechanism for tunnel drilling and splitting machines includes: The excavator boom connecting mechanism is a heavy-duty connecting boom welded from thick plates, with hinge holes at the ends for hinged connection to the end of the excavator boom. The side-swing cylinder assembly includes a cylinder barrel, piston rod, tapered hinge joint, and stroke detection component. The cylinder barrel is hinged to the excavator boom connection mechanism, and the piston rod is connected to the drilling and splitting machine connection mechanism through the tapered hinge joint. The stroke detection component is integrated on the side of the cylinder barrel. The drilling and fracturing machine connection mechanism is a frame structure with a flange. The flange has mounting holes evenly distributed around its circumference, reinforcing ribs on the inside, and a maintenance window reserved at the bottom. It can swing horizontally laterally with the movement of the side-swing cylinder assembly.

[0016] The lateral swing angle range of the side-swing cylinder assembly is ±30° to ±45°. The stroke detection component is a displacement sensor or a mechanical limit block, with a detection accuracy of ≥±0.1°. The flange and reinforcing rib of the drilling and fracturing integrated machine connection mechanism are integrally cast or welded. The oil circuit interface of the side-swing cylinder assembly is connected to the excavator's hydraulic system, and the main unit provides power and controls the lateral swing action. Furthermore, the excavator boom connection mechanism is equipped with reinforcing ribs to improve torsional and bending stiffness, adapting to heavy-duty drilling and fracturing conditions in tunnels.

[0017] Working principle: The excavator boom connecting mechanism is connected to the end pin of the excavator boom through the end hinge hole, thus completing the rigid connection with the host machine. One end of the cylinder of the side-swing cylinder assembly is hinged to the excavator boom connection mechanism, and the end of the piston rod is hinged to the drilling and splitting machine connection mechanism through a tapered hinge joint. Secure the flange of the drilling and splitting machine connection mechanism to the machine body with bolts to ensure coaxiality of the connection; Install the stroke detection component on the side of the cylinder and connect it to the excavator control system; connect the side swing cylinder oil circuit to the main hydraulic system to complete the overall assembly; The excavator moves the drilling and splitting machine to the tunnel face construction position. The main unit controls the side swing cylinder to supply oil, and the piston rod extends and retracts to drive the connecting mechanism of the drilling and splitting machine to swing laterally around the hinge point. The stroke detection component provides real-time feedback on the piston rod displacement, which is converted into a side swing angle. The operator, in conjunction with the excavator's slewing action and the rotation of the drilling and splitting machine itself, adjusts the drilling and splitting bit and the splitting posture to be perpendicular to the tunnel face. Lock the hydraulic circuit of the side-swing cylinder, fix the current posture, and start the drilling operation of the integrated drilling and fracturing machine; After completing the single-hole splitting operation, unlock the oil circuit, adjust the angle through the side swing mechanism, and quickly switch to the next peripheral hole position in conjunction with the excavator's rotation, repeating the above process.

[0018] Performance parameters: Lateral swing angle: ±30°~±45° (customizable) Angle detection accuracy: ±0.1° Rated load capacity: ≥50t Response time: ≤0.5s Fatigue life: ≥10,000 cycles.

[0019] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A special side-swing mechanism for a tunnel splitting machine, characterized in that, include: The excavator boom connecting mechanism (1) is a heavy-duty connecting arm welded with thick plates, and the end is provided with a hinge hole for hinge connection with the end of the excavator boom. The side-swing cylinder assembly (2) includes a cylinder (21), a piston rod (22), a tapered hinge joint (23), and a stroke detection component (24). The cylinder (21) is hinged to the excavator boom connection mechanism (1), and the piston rod (22) is connected to the drilling and splitting machine connection mechanism (3) through the tapered hinge joint (23). The stroke detection component (24) is integrated on the side of the cylinder (21). The drilling and fracturing machine connection mechanism (3) is a frame structure with a flange (31). The flange (31) has mounting holes evenly distributed around its circumference, and a reinforcing rib (32) is provided on the inner side. A maintenance window (33) is reserved at the bottom. It can swing horizontally with the movement of the side swing cylinder assembly (2).

2. The special side-swing mechanism for tunnel drilling and splitting machines according to claim 1, characterized in that, The lateral swing angle range of the side-swing cylinder assembly (2) is ±30°~±45°.

3. The special side-swing mechanism for tunnel drilling and splitting machines according to claim 1, characterized in that, The stroke detection component (24) is a displacement sensor or a mechanical limit block, with a detection accuracy of ≥ ±0.1°.

4. The special side-swing mechanism for tunnel drilling and splitting machines according to claim 1, characterized in that, The flange (31) and reinforcing rib (32) of the drilling and fracturing machine connection mechanism (3) are integrally cast or welded.

5. The special side-swing mechanism for tunnel drilling and splitting machines according to claim 1, characterized in that, The oil circuit interface of the side-swing cylinder assembly (2) is connected to the hydraulic system of the excavator, and the host provides power and controls the side-swing action.

6. The special side-swing mechanism for tunnel drilling and splitting machines according to claim 1, characterized in that, The excavator boom connecting mechanism (1) is equipped with reinforcing ribs to improve torsional and bending stiffness and adapt to heavy-duty tunnel drilling conditions.

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