A mast assembly and hydraulic core drill

Abstract

The present application relates to a kind of mast assembly and hydraulic core drill, mast assembly includes main mast, vice mast, telescopic driver and two track supports;Main mast is slidably sleeved in vice mast, telescopic driver is set in main mast inside, and is connected vice mast;Track support includes support beam, first slide rail and second slide rail;First slide rail and second slide rail are parallelly arranged in the two sides of support beam, and three are Z-shaped;Two support beams of two track supports are symmetrically arranged in the two sides of main mast, two first slide rails form first track, and two second slide rails form second track;First track and second track extend along the length direction of main mast;First track is used to install the power assembly of clamping drill pipe;Main mast is slidably connected to drill main body by second track.It has beneficial effects, realizes the integrated function, compact structure, balanced stress, the comprehensive effect of efficient hole forming, adapts to the core exploration drill for the core performance demand of mast assembly.

Description

Technical Field

[0001] This invention relates to the field of geological exploration technology, and in particular to a mast assembly and a hydraulic core drilling rig. Background Technology

[0002] The mast assembly is the core load-bearing and guiding component of the drilling rig, and its performance directly determines the accuracy, efficiency, and safety of core exploration operations. On the one hand, the mast needs to support the weight of the drill string and guide it to rise and fall stably along the guide rails, ensuring a stable drilling trajectory for the drill string in complex formations through a hydraulic control system. On the other hand, the mast also needs to provide a mounting foundation and movement guide for the power assembly (such as the slip mechanism for holding the drill pipe and the power head that drives the drill string to rotate), and be able to adapt to the clamping and transport needs of drill pipes of different specifications. As the industry develops towards "high-end, lightweight, and intelligent" technologies, drilling rigs are placing higher demands on the functional integration of the mast assembly.

[0003] At present, patent CN217380425U discloses a mast assembly and a rotary drilling rig. The mast assembly includes a mast, a luffing mechanism, a first drill rod tool, a second drill rod tool, a mast cylinder, a hoisting frame, a follower frame, a pressurizing cylinder, and a power head. One side of the luffing mechanism is used to connect to the upper structure of the rotary drilling rig, and the other side of the luffing mechanism is connected to one end of the mast and one end of the mast cylinder. The other end of the mast cylinder is connected to the mast. The mast includes a lower mast and a sub-mast. The sub-mast is used to connect to the lower mast. The hoisting frame is set at the top of the lower mast or the top of the sub-mast. The follower frame and the power head are movably mounted on the mast. The first drill rod tool and the second drill rod tool are selectively connected to the follower frame. By setting up detachable sub-masts and selectively using first and second drill rods, the rotary drilling rig can switch between low-headroom and standard working states, effectively improving overall machine utilization, drilling efficiency, and reducing operating costs. However, this solution focuses on "working state switching" and does not address the optimization of the mast's track design. Although the power head and follower frame are movable on the mast, they still use a traditional single-track or distributed track layout, which cannot solve the dual functional integration problem of "powertrain installation" and "mast self-sliding," nor does it consider the impact of the track layout on force balance and movement accuracy. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a mast assembly and a hydraulic core drilling rig, which solves the technical problems that the prior art cannot meet the technical requirements.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0008] On one hand, the present invention provides a mast assembly comprising a main mast, a secondary mast, a telescopic actuator, and two track supports; the main mast is slidably fitted onto the secondary mast, the telescopic actuator is disposed inside the main mast and connected to the secondary mast to drive the secondary mast to slide along the main mast to achieve extension and retraction; the track supports include a support beam, a first slide rail, and a second slide rail; the first and second slide rails are arranged parallel to each other on both sides of the support beam, and from a cross-sectional perspective, the three form a Z-shape; the two support beams of the two track supports are symmetrically arranged on both sides of the main mast, the two first slide rails form a first track, and the two second slide rails form a second track; the first and second tracks extend along the length direction of the main mast; the first track is used to install a power assembly for clamping drill pipes; the main mast is slidably connected to the drilling rig body through the second track, and the drilling rig body can drive the main mast to slide.

[0009] Optionally, the mast assembly further includes a first friction positioning component and a second friction positioning component; the first friction positioning component is disposed at the top of the main mast, and the main mast abuts against the auxiliary mast through the first friction positioning component; the second friction positioning component is disposed at the bottom of the auxiliary mast, and the auxiliary mast abuts against the main mast through the second friction positioning component; during the sliding of the auxiliary mast driven by the telescopic actuator, the first friction positioning component rubs against the auxiliary mast and slides, and the second friction positioning component rubs against the main mast and slides. After the drive stops, the auxiliary mast is positioned by the frictional forces of the first friction positioning component and the second friction positioning component on the auxiliary mast and the main mast, respectively.

[0010] Optionally, the first friction positioning assembly includes a chuck, a pad, a friction block, and a clearance adjustment assembly; the chuck is engaged with the main mast, the clearance adjustment assembly is installed on the chuck, the pad is located between the clearance adjustment assembly and the chuck, and the clearance adjustment assembly abuts against the auxiliary mast via the friction block.

[0011] Optionally, the clearance adjustment assembly includes an adjustment head, a fixed nut, and an adjusting nut; the adjustment head is slidably inserted through the middle of the chuck and the pad along its axial direction, the fixed nut and the adjusting nut are threadedly connected to the adjustment head, and the friction block is fixedly installed at the end of the adjustment head; the axial movement of the adjustment head is achieved by rotating the adjusting nut, thereby adjusting the clearance between the friction block and the auxiliary mast.

[0012] Optionally, the main mast is equipped with a drill pipe guide assembly and a power head driver; the drill pipe guide assembly is slidably mounted on the first guide rail; the lifting driver is mounted between the two first guide rails, and the lifting driver connects the drill pipe guide assembly and the power assembly to drive the drill pipe guide assembly to lift synchronously with the drill pipe during the lifting process.

[0013] Optionally, the mast assembly also includes a front end and a rotation actuator; the front end is rotatably mounted on the top of the submast, and the rotation actuator is connected at both ends to the submast and the front end to drive the front end to rotate in the horizontal plane.

[0014] Optionally, the main mast has a plurality of first through holes evenly distributed along its length on both the front and rear sides; and the auxiliary mast has a plurality of second through holes evenly distributed along its length on both the left and right sides.

[0015] On the other hand, the present invention also provides a hydraulic core drilling rig, including the above-mentioned mast assembly, heat dissipation assembly and drilling rig body; the heat dissipation assembly is installed on the drilling rig body; when the mast assembly is in a horizontal state, the main mast is attached to the heat dissipation assembly.

[0016] Optionally, the heat dissipation assembly includes a main heat sink, a secondary heat sink, and a bracket; the bracket is located on one side of the main heat sink, and the secondary heat sink is located inside the bracket; when the mast assembly is in a horizontal state, the main mast is attached to the bracket.

[0017] Optionally, the drilling rig body includes a vehicle body, a thrust cylinder assembly, and a mast lifting drive; the thrust cylinder assembly is rotatably mounted on the vehicle body, the main mast is slidably connected to the thrust cylinder assembly via a second rail, the thrust cylinder assembly can drive the mast assembly to rotate in the horizontal plane, one end of the mast lifting drive is connected to the outside of the main mast, and the other end of the mast lifting drive is connected to the thrust cylinder assembly to drive the mast assembly to lift.

[0018] (III) Beneficial Effects

[0019] The beneficial effects of this invention are:

[0020] This invention provides a mast assembly in which a secondary mast is slidably fitted onto a main mast and, in conjunction with a telescopic actuator located inside the main mast, can flexibly drive the secondary mast to slide along the main mast to achieve extension and retraction. This adapts to the needs of different drilling depths in core exploration (such as shallow surface core sampling and deep geological profile drilling), ensuring the overall structure is compact and suitable for confined working spaces such as mountains and hills commonly encountered in field exploration. The two track supports adopt a Z-shaped cross-section design with the first and second slide rails arranged parallel on both sides of the support beam, symmetrically positioned on both sides of the main mast. This layout, on the one hand, eliminates the need for separate mounting rails for the traditional core drilling tool drive components. The "path" and "mast sliding track" are integrated through the same support beam, eliminating the need for additional independent supports welded to the main mast or the addition of auxiliary tracks. This significantly improves the utilization rate of limited working space in the field, while avoiding the disruption of the main mast's structural symmetry by additional structures, thus adapting to the stress requirements of complex terrain. Furthermore, the symmetrically distributed Z-shaped track supports on both sides ensure that both the first track formed by the first slide rail and the second track formed by the second slide rail extend along the length of the main mast, significantly improving stress balance. This effectively solves the problems of mast center of gravity shift caused by vertically distributed dual tracks and stress concentration and slide rail deformation caused by single-sided parallel dual tracks, ensuring the safe operation of the core drill bit. The positioning accuracy of the moving parts when moving along the first track (ensuring the core drill bit is accurately aligned with the center point of the exploration hole, avoiding core sample collection deviation due to hole position deviation) and the stability of the main mast when sliding relative to the drilling rig body along the second track (preventing the drill bit from tilting due to mast swaying during drilling, ensuring the integrity of the core sample); in addition, the first track is specifically used to install the drill bit drive components for core exploration operations, and the second track is specifically used to realize the sliding connection between the main mast and the drilling rig body. The two have clear functions and are compatible with each other, which not only avoids the shortcomings of traditional single-track systems that require frequent shutdowns for adjustment, but also makes up for the fact that the track in the existing core exploration mast scheme cannot also accommodate drill bit drive. The limitations of component movement and mast position adjustment allow the drill bit drive components to move across the entire length of the main mast, reducing downtime caused by mast position adjustments and improving core exploration drilling efficiency. Simultaneously, the integrated structure of the Z-shaped track support offers stronger vibration and impact resistance compared to traditional bolt-fixed rails (suitable for ground vibrations and drill bit impacts during field drilling), reducing bolt loosening and rail wear, and lowering maintenance costs for field exploration equipment. Overall, it achieves a comprehensive effect of "functional integration, compact structure, balanced stress, high exploration efficiency, and reliable durability," meeting the core performance requirements of the mast assembly in the core exploration field.

[0021] The present invention provides a hydraulic core drilling rig with integrated functions, compact structure and balanced force, which ensures the precise movement of the drill bit drive components and the stable sliding of the mast during core exploration operations, improves the drilling efficiency and core sampling accuracy of core exploration, ensures the authenticity and reliability of the obtained geological core data, and provides accurate basis for subsequent geological analysis. When the mast assembly is horizontal, it overlaps with the heat dissipation component, providing stable support for the mast assembly without the need for additional support structures. This prevents the mast assembly from being suspended in the air during field relocation or non-operational periods, thus protecting the integrity of the main mast structure and extending the equipment's service life in complex field environments. Simultaneously, the heat dissipation component serves both to cool the drilling rig's hydraulic system and as a horizontal support for the mast assembly, simplifying the overall structure, reducing the number of parts and the equipment's weight, and lowering the load during field transportation and relocation. Furthermore, the elimination of additional support components saves space in the field, making it suitable for confined exploration areas such as mountains and forests, reducing the need for site modifications and improving the equipment's adaptability to different terrains. In addition, the overlapping design allows for convenient horizontal storage of the mast assembly without complex fixing procedures, making it suitable for scenarios without large hoisting equipment in the field. This enhances the ease of relocation in complex terrains such as mountains and hills, reducing relocation assistance time and costs. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the mast assembly of Embodiment 1 of the present invention installed on the main body of the drilling rig;

[0023] Figure 2 This is a schematic diagram of the mast assembly according to Embodiment 1 of the present invention;

[0024] Figure 3 This is a structural schematic diagram of the mast assembly of Embodiment 1 of the present invention from another angle;

[0025] Figure 4 This is a schematic diagram of the main mast structure of Embodiment 1 of the present invention;

[0026] Figure 5 This is a structural schematic diagram of the main mast from another angle in Embodiment 1 of the present invention;

[0027] Figure 6 This is a bottom view of the main mast of Embodiment 1 of the present invention;

[0028] Figure 7 This is a schematic diagram of the submast of Embodiment 1 of the present invention;

[0029] Figure 8 This is an exploded view of the structure of the first friction positioning component of Embodiment 1 of the present invention;

[0030] Figure 9 This is a cross-sectional schematic diagram of the first friction positioning component of Embodiment 1 of the present invention;

[0031] Figure 10 This is a schematic diagram of the submast of Embodiment 1 of the present invention;

[0032] Figure 11 This is a schematic diagram of the main mast structure of Embodiment 2 of the present invention;

[0033] Figure 12 yes Figure 11 Enlarged view of point A in the middle;

[0034] Figure 13 This is a structural schematic diagram of the main mast from another angle in Embodiment 2 of the present invention;

[0035] Figure 14 yes Figure 13 Enlarged view of point B in the middle;

[0036] Figure 15 This is a schematic diagram of the hydraulic core drilling rig in the upright state according to Embodiment 3 of the present invention;

[0037] Figure 16 This is a schematic diagram of the hydraulic core drilling rig in a horizontal state according to Embodiment 3 of the present invention;

[0038] Figure 17 This is a rear view of the hydraulic core drilling rig in a horizontal state according to Embodiment 3 of the present invention.

[0039] [Explanation of Labels in the Attached Image]

[0040] 1: Main mast; 11: Drill pipe guide assembly; 12: Power head drive; 13: First through hole;

[0041] 2: Secondary mast; 21: Front end; 22: Rotary actuator; 23: Second through hole;

[0042] 3: Telescopic actuator;

[0043] 4: Track support; 41: Support beam; 411: First diagonal brace beam; 412: Second diagonal brace beam; 413: First connecting beam; 414: Second connecting beam; 42: First slide rail; 43: Second slide rail;

[0044] 5: Powertrain;

[0045] 6: Drilling rig body; 61: Vehicle body; 62: Thrust cylinder assembly; 63: Mast lifting drive;

[0046] 71: Chuck; 72: Pad; 73: Friction block; 74: Adjusting head; 75: Fixing nut; 76: Adjusting nut;

[0047] 81: Main radiator; 82: Secondary radiator; 83: Bracket. Detailed Implementation

[0048] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the invention to those skilled in the art. The terms "front," "rear," "left," and "right" as used herein refer to... Figure 1 The orientation is for reference.

[0049] Example 1:

[0050] like Figures 1-7 As shown, a specific embodiment of the present invention provides a mast assembly comprising a main mast 1, a secondary mast 2, a telescopic actuator 3, and two track supports 4. The main mast 1 is slidably fitted onto the secondary mast 2. The telescopic actuator 3 is disposed inside the main mast 1 and connected to the secondary mast 2 to drive the secondary mast 2 to slide along the main mast 1 to achieve extension and retraction. The track supports 4 include a support beam 41, a first slide rail 42, and a second slide rail 43. The first slide rail 42 and the second slide rail 43 are arranged parallel to each other on both sides of the support beam 41, and from a cross-sectional perspective, the three form a Z-shape. The two support beams 41 of the two track supports 4 are symmetrically arranged on both sides of the main mast 1, and the two first slide rails... 42 forms a first track, and two second slide rails 43 form a second track; the first track and the second track extend along the length of the main mast 1; specifically, the two support beams 41 of the two track supports 4 are symmetrically arranged on the left and right sides of the main mast 1, the two first slide rails 42 located on the front side of the main mast 1 form a first track extending along the length of the main mast 1, and the two second slide rails 43 located on the rear side of the main mast 1 form a second track extending along the length of the main mast 1; the first track is used to install the power assembly 5 for clamping the drill pipe; the main mast 1 is slidably connected to the drilling rig body 6 through the second track, and the drilling rig body 6 can drive the main mast 1 to slide.

[0051] Specifically, the auxiliary mast 2 can be slidably mounted on the main mast 1 and, in conjunction with the telescopic actuator 3 located inside the main mast 1, can flexibly drive the auxiliary mast 2 to slide along the main mast 1 to achieve extension and retraction. This adapts to the needs of different drilling depths in core exploration (such as shallow surface core sampling and deep geological profile drilling), ensuring the overall structural compactness and adaptability to the confined working spaces commonly encountered in field exploration, such as mountains and hills. The two track supports 4 adopt a Z-shaped cross-section design with the first slide rail 42 and the second slide rail 43 parallel to each other on both sides of the support beam, and are symmetrically arranged on both sides of the main mast 1. This layout, on the one hand, eliminates the need for separate "core" supports in traditional exploration, and on the other hand, allows for the expansion and contraction of the auxiliary mast 2 along the main mast 1. The "core drill bit drive component mounting rail" and the "mast sliding rail" are integrated through the same support beam, eliminating the need for additional independent supports welded to the main mast 1 or the addition of auxiliary rails. This significantly improves the utilization rate of limited working space in the field, while avoiding additional structures that could disrupt the structural symmetry of the main mast 1, thus adapting to the stress requirements of complex terrain in the field. On the other hand, the symmetrically distributed Z-shaped rail supports 4 on both sides ensure that the first rail formed by the first slide rail 42 and the second rail formed by the second slide rail 43 both extend along the length of the main mast 1, significantly improving the balance of stress and ensuring the positional accuracy of the core drill bit drive component when moving along the first rail (ensuring...). The core drill bit is precisely aligned with the center point of the exploration borehole to avoid deviations in core sample collection caused by borehole position deviations. The stability of the main mast 1 when sliding relative to the drilling rig body along the second track (preventing mast swaying during drilling and ensuring drill bit tilt, thus guaranteeing core sample integrity) is also ensured. Furthermore, the first track is specifically designed for installing the drill bit drive components for core exploration operations, while the second track is specifically designed for the sliding connection between the main mast 1 and the drilling rig body. Both tracks have clearly defined functions and work in tandem, avoiding the shortcomings of traditional single-track designs that require frequent shutdowns for adjustments, and also compensating for the limitations of existing core exploration mast designs where the track cannot simultaneously accommodate both drill bit drive component movement and mast position. The adjustment of the shortcomings allows the movement range of the drill bit drive components to cover the entire length of the main mast 1, reducing downtime caused by adjusting the mast position and improving the drilling efficiency of core exploration. At the same time, the integrated structure of the Z-shaped track support 4 has stronger resistance to vibration and impact compared to the traditional method of directly fixing the slide rail with bolts (suitable for ground vibration and drill bit impact scenarios during field drilling), reducing bolt loosening and slide rail wear, and lowering the maintenance cost of field exploration equipment. Overall, it achieves a comprehensive effect of "functional integration, compact structure, balanced force, high exploration efficiency, and reliable durability", which meets the core performance requirements of the mast assembly in the field of core exploration.

[0052] Furthermore, such as Figures 4-7As shown, the mast assembly also includes a first friction positioning component and a second friction positioning component. The first friction positioning component is located at the top of the main mast 1, and the main mast 1 abuts against the auxiliary mast 2 through the first friction positioning component. The second friction positioning component is located at the bottom of the auxiliary mast 2, and the auxiliary mast 2 abuts against the main mast 1 through the second friction positioning component. During the sliding of the auxiliary mast 2 driven by the telescopic actuator 3, the first friction positioning component rubs against the auxiliary mast 2 while sliding, and the second friction positioning component rubs against the main mast 1 while sliding. After the drive stops, the auxiliary mast 2 is positioned by the frictional forces of the first and second friction positioning components on the auxiliary mast 2 and the main mast 1, respectively. By setting the first friction positioning component at the top of the main mast 1 and the second friction positioning component at the bottom of the auxiliary mast 2, a two-way friction positioning mechanism is formed: when the telescopic actuator 3 drives the auxiliary mast 2 to slide, the two sets of components generate frictional sliding with the auxiliary mast 2 and the main mast 1, respectively. After the driving force stops, the auxiliary mast 2 is positioned instantly by using frictional force. Compared to traditional mechanical locking (such as pin positioning), this design can lock precisely at any extension position, adapting to the flexible adjustment needs of different drilling depths. At the same time, friction positioning buffers impacts through the friction of the contact surface, avoiding rigid collisions during mechanical locking, reducing structural wear on the main and auxiliary masts 2, and extending their service life. Bidirectional positioning can also counteract the downward trend of the auxiliary mast 2 caused by its own weight and the displacement caused by operational vibrations, ensuring the overall stability of the mast after extension and providing a rigid reference for subsequent drilling operations.

[0053] Furthermore, such as Figures 4-9 As shown, the first friction positioning assembly includes a chuck 71, a pad 72, a friction block 73, and a gap adjustment assembly. The chuck 71 is snapped onto the main mast 1, the gap adjustment assembly is installed on the chuck 71, and the pad 72 is located between the gap adjustment assembly and the chuck 71. The gap adjustment assembly abuts against the auxiliary mast 2 via the friction block 73. The chuck 71 achieves a stable connection with the main mast 1, the friction block 73 directly contacts the auxiliary mast 2 to provide frictional resistance, and the gap adjustment assembly can dynamically adjust the contact pressure between the friction block 73 and the auxiliary mast 2. This structure disassembles the positioning function, making it easy to replace worn friction blocks 73 individually, reducing maintenance costs. The pad 72 is mainly used for the installation and adjustment of the gap adjustment assembly and can also absorb some vibration energy, preventing uneven wear of the friction block 73 due to high-frequency vibration. The gap adjustment assembly can compensate for the wear of the friction block 73 after long-term use, ensuring that the friction force is always kept within an effective range (avoiding positioning failure due to wear), further improving positioning reliability.

[0054] Furthermore, such as Figure 8 and Figure 9As shown, the gap adjustment assembly includes an adjusting head 74, a fixing nut 75, and an adjusting nut 76. The adjusting head 74 is slidably inserted through the middle of the chuck 71 and the pad 72 along its axial direction. The fixing nut 75 and the adjusting nut 76 are threadedly connected to the adjusting head 74, and the friction block 73 is fixedly installed at the end of the adjusting head 74. By rotating the adjusting nut 76, the adjusting head 74 can be moved axially, thereby adjusting the gap between the friction block 73 and the auxiliary mast 2. The gap adjustment assembly achieves the gap adjustment between the friction block 73 and the auxiliary mast 2 through the threaded engagement of the adjusting head 74, the fixing nut 75, and the adjusting nut 76: rotating the adjusting nut 76 can drive the adjusting head 74 to move axially, changing the clamping degree of the friction block 73. It can be dynamically adjusted without disassembling the assembly, making operation convenient. After adjustment, the fixing nut 75 locks the position of the adjusting head 74 to prevent the adjustment from failing due to operational vibration; the self-locking characteristic of the threaded drive ensures that the gap is stable after adjustment, so that the pressure of the friction block 73 on the submast 2 is uniform, avoiding excessive local pressure that could cause scratches on the surface of the submast 2, while ensuring stable friction and consistent positioning effect.

[0055] The composition and structure of the second friction positioning component are the same as those of the first friction positioning component. The only difference is the installation position and the object of action. The specific structure of the second friction positioning component will not be described in detail here.

[0056] Furthermore, such as Figure 10 As shown, the main mast 1 is equipped with a drill pipe guide assembly 11 and a power head driver 12; the drill pipe guide assembly 11 is slidably mounted on the first guide rail; the lifting driver is mounted between the two first slide rails 42, and the lifting driver connects the drill pipe guide assembly 11 and the power assembly 5 so as to drive the drill pipe guide assembly 11 to lift and lower synchronously with the drill pipe during the lifting and lowering process. By installing a drill pipe guide assembly 11, a power head driver 12, and a lifting driver connecting the two on the main mast 1, a guide-drive-synchronous lifting system is formed: the drill pipe guide assembly 11 slides along the first guide rail, providing lateral support for the drill pipe and preventing the long drill pipe from bending or swaying due to its own weight during lifting; the lifting driver drives the guide assembly and the power assembly 5 to lift synchronously, ensuring that the guide point and the power head (the part that holds the drill pipe) always maintain a fixed distance, preventing the drill pipe from generating additional bending moment due to guide lag, and reducing the risk of drill pipe breakage; synchronous movement can also reduce the relative friction between the drill pipe and the guide assembly, protect the drill pipe surface and the guide sleeve, improve the hole forming accuracy, and shorten the auxiliary time for drill pipe lifting, thereby improving work efficiency.

[0057] Furthermore, such as Figure 2 and Figure 7As shown, in this embodiment, the mast assembly also includes a front end 21 and a rotation driver 22. The front end 21 is rotatably mounted on the top of the auxiliary mast 2, and the two ends of the rotation driver 22 are connected to the auxiliary mast 2 and the front end 21 to drive the front end 21 to rotate in the horizontal plane. The front end 21 can rotate in the horizontal plane through the rotation driver 22, breaking through the directional limitations of traditional fixed pulleys: when the front end 21 is used to hoist drill pipes or counterweights, the rotation function allows it to adjust the hoisting angle within the range of 0 to 40°, especially in narrow construction sites, it can flexibly avoid surrounding obstacles; the rotation driver 22 (such as a hydraulic motor) provides stable driving force to ensure that the pulley can still be positioned under load, avoiding the drill pipe from swaying and colliding with the mast during hoisting; this design works in conjunction with the sliding function of the main mast 1, and the mast can slide in coordination with the pulley to turn, further expanding the working range of drill pipe hoisting, reducing the number of times the whole machine moves, and improving construction flexibility.

[0058] Furthermore, such as Figures 1-7 As shown, the main mast 1 has multiple first through holes 13 evenly distributed along its length on both its front and rear sides; the auxiliary mast 2 has multiple second through holes 23 evenly distributed along its length on both its left and right sides. The multiple first through holes 13 and multiple second through holes 23 can reduce the overall weight without compromising the structural strength of the main mast 1 and auxiliary mast 2, thus reducing the driving load and energy consumption of the drilling rig. The evenly distributed first through holes 13 and multiple second through holes 23 also enhance airflow during the extension and retraction of the main mast 1 and auxiliary mast 2, aiding in heat dissipation and preventing excessively high local temperatures from affecting component lifespan. Simultaneously, the staggered distribution of the first through holes 13 and second through holes 23 on the left and right sides and front and rear sides reduces stress concentration and improves the fatigue resistance of the mast assembly.

[0059] Specifically, the first friction positioning component, the second friction positioning component, and the gap adjustment component work together: the gap adjustment component can adjust the contact pressure between the friction block 73 and the mast (auxiliary mast 2 or main mast 1) through threaded transmission, compensate for the wear of the friction block 73, and ensure that the bidirectional friction positioning component can always provide a stable and suitable friction force; based on this stable friction force, the first and second friction positioning components can immediately lock the main mast 1 and auxiliary mast 2 after the telescopic drive 3 stops, avoid micro-movement of the auxiliary mast 2, and provide a rigid foundation for the synchronous lifting and lowering of the drill pipe guide assembly 11 and the power assembly 5. The combination of the two solves the problem of traditional positioning failure due to wear and ensures the stability of subsequent drill pipe lifting and lowering operations, reducing drill pipe guide deviation caused by mast assembly swaying.

[0060] In this embodiment, the mast assembly is used as follows: according to the pile depth marked on the construction drawings, the telescopic actuator 3 inside the main mast 1 is activated. The telescopic actuator 3 drives the auxiliary mast 2 to slide and extend along the main mast 1. During this process, the first friction positioning component at the top of the main mast 1 slides along the inner wall of the auxiliary mast 2, and the second friction positioning component at the bottom of the auxiliary mast 2 slides along the inner wall of the main mast 1. The two components simultaneously generate frictional resistance to buffer the sliding impact. When the auxiliary mast 2 extends to the target length, the telescopic actuator 3 is stopped. The first and second friction positioning components lock the auxiliary mast 2 immediately through frictional force to prevent it from sliding down due to its own weight. If the position of the auxiliary mast 2 needs to be finely adjusted, the adjusting nut 76 in the first friction positioning assembly and the second friction positioning assembly can be rotated. The friction block 73 is pushed by the adjusting head 74 to change the contact pressure, ensuring that the positioning deviation of the auxiliary mast 2 is ≤0.5mm, providing a precise height reference for subsequent hole drilling. At the same time, the main mast 1 is slidably connected to the drilling rig body 6 through the second track on the rear side. According to the pile position distribution, the drilling rig body 6 drives the main mast 1 to move along the second track, aligning the mast assembly with the center point of the first hole. Hole calibration can be completed without moving the whole machine, adapting to the space constraints of narrow construction sites.

[0061] During the drilling stage, the lifting drive is activated, which drives the drill pipe guide assembly 11 and the power assembly 5 to descend synchronously along the first track until the guide hole of the drill pipe guide assembly 11 is coaxially aligned with the drill pipe held by the power assembly 5. During the drilling process, the power head drive 12 drives the power assembly 5 to rotate and drill the drill pipe. The drill pipe guide assembly 11 always provides lateral support for the drill pipe, which can prevent it from bending due to its own weight or swaying caused by high-speed rotation, and ensure the verticality deviation of the hole. As the drill pipe continues to drill, the lifting drive continues to drive the power assembly 5 and the drill pipe guide assembly 11 to descend synchronously along the first track. The two always maintain a fixed distance to avoid the drill pipe from generating additional bending moment due to guide lag, and reduce the risk of drill pipe breakage. During this period, the first through holes 13 on the front and rear sides of the main mast 1 and the second through holes 23 on the left and right sides of the auxiliary mast 2 can enhance air circulation and assist in heat dissipation.

[0062] Example 2:

[0063] This embodiment provides a mast assembly that includes all the structures of the mast assembly described in Embodiment 1.

[0064] In this embodiment, as Figures 11-14The support beam 41 includes multiple first diagonal bracing beams 411, multiple second diagonal bracing beams 412, multiple first connecting beams 413, and multiple second connecting beams 414. The two ends of each first diagonal bracing beam 411 are fixedly connected to a first slide rail 42 and a second slide rail 43. The multiple first diagonal bracing beams 411 are evenly and parallelly arranged along the axial direction of the first slide rail 42 and the second slide rail 43. Each second diagonal bracing beam 412 connects to two adjacent first diagonal bracing beams 411, and the two adjacent second diagonal bracing beams 412 are in a Λ-shape or a V-shape. The two ends of the first connecting beams 413 are fixedly connected to... The first diagonal brace 411 is fixedly connected to the main mast 1, and multiple first connecting beams 413 are correspondingly connected to the multiple first diagonal brace beams 411. The two ends of the second connecting beam 414 are connected to the second diagonal brace beam 412 and the main mast 1, and multiple second connecting beams 414 are correspondingly connected to the multiple second diagonal brace beams 412. The two ends of the first diagonal brace beam 411 are directly and fixedly connected to the first slide rail 42 and the second slide rail 43, and are evenly and parallelly arranged along the slide rail axis, which can firmly connect the two slide rails into a whole, avoiding the problem of relative displacement of the two slide rails due to vibration. When the power assembly 5 moves along the first slide rail 42 and the main mast 1 slides along the second slide rail 43, the two slide rails always remain parallel, ensuring the moving accuracy of the power assembly 5 and the sliding stability of the mast, reducing hole deviation from the source of track support. Adjacent second diagonal brace beams 412 are connected in a Λ-shape or V-shape, utilizing the geometric stability of the triangular structure to significantly enhance the torsional and bending resistance of the support beam 41. Under the high-frequency vibration and impact of drill pipe weight during core exploration, the support beam 41 can effectively resist torsional deformation, avoid misalignment of the slide rail due to deformation of the support beam 41, and thus prevent the power assembly 5 from jamming or the mast from sliding and shifting, thereby extending the service life of the support beam 41.

[0065] Furthermore, in this embodiment, when the main mast 1 is horizontal, the height of the first connecting beam 413 near the top of the main mast 1 is greater than the height of the other first connecting beams 413 and all the second connecting beams 414. The drill pipe guide assembly 11 can slide on the first guide rail to abut against the first connecting beam 413 near the top of the main mast 1, thereby limiting the drill pipe guide assembly 11 by the first connecting beam 413 near the top of the main mast 1 and preventing it from derailing.

[0066] The support beam 41 provided in this embodiment is a high-rigidity structure. When the power assembly 5 moves along the first track, the torsional resistance of the support beam 41 can prevent the first slide rail 42 from sinking and deforming due to the weight of the power assembly 5, ensuring the synchronous lifting accuracy of the power assembly 5 and the drill pipe guide assembly 11. When the main mast 1 slides along the second track, the stable support of the first diagonal brace beam 411 on the second slide rail 43 can reduce jamming during the sliding process. In conjunction with the first friction positioning component and the second friction positioning component, the positioning of the main mast 1 after sliding is more accurate, further improving the efficiency of pile position calibration. Drilling rig vibration can easily cause slight deformation of the traditional support beam 41, which in turn causes changes in the contact gap between the auxiliary mast 2 and the friction positioning component, affecting the positioning effect. In this embodiment, the Λ / V-shaped second inclined brace beam 412 of the support beam 41 can effectively absorb some vibration energy, reduce the impact of vibration on the main mast 1 and the auxiliary mast 2, make the contact pressure between the first friction positioning component, the second friction positioning component and the mast more stable, avoid friction positioning failure due to vibration, ensure that the auxiliary mast 2 always remains accurately locked after extension and retraction, and provide a rigid reference for the stable guidance of the drill pipe guide assembly 11.

[0067] Example 3:

[0068] like Figures 15-17 As shown, this embodiment provides a hydraulic core drilling rig, which includes the mast assembly, heat dissipation component and drilling rig body 6 described in embodiment 1; the heat dissipation component is installed on the drilling rig body 6; when the mast assembly is in a horizontal state, the main mast 1 is attached to the heat dissipation component.

[0069] Specifically, its integrated functions, compact structure, and balanced stress ensure the precise movement of the drill bit drive components and the stable sliding of the mast during core exploration operations, thereby improving the drilling efficiency and core sampling accuracy of core exploration, ensuring the authenticity and reliability of the obtained geological core data, and providing accurate basis for subsequent geological analysis. When the mast assembly is horizontal, it overlaps with the heat dissipation component, providing stable support for the mast assembly without the need for additional support structures. This prevents the mast assembly from being suspended in the air during field relocation or non-operational periods, thus protecting the structural integrity of the main mast and extending the equipment's service life in complex field environments. Simultaneously, the heat dissipation component serves both to cool the drilling rig's hydraulic system and as a horizontal support for the mast assembly, simplifying the overall structure, reducing the number of parts and the equipment's weight, and lowering the load during field transportation and relocation. Furthermore, the elimination of additional support components saves space in the field, making it suitable for confined exploration areas such as mountains and forests, reducing the need for site modifications and improving the equipment's adaptability to different terrains. In addition, the overlapping design allows for convenient horizontal storage of the mast assembly without complex fixing procedures, making it suitable for scenarios without large hoisting equipment in the field. This enhances the ease of relocation in complex terrains such as mountains and hills, reducing relocation assistance time and costs.

[0070] Furthermore, such as Figure 16 and Figure 17 As shown, in this embodiment, the heat dissipation assembly includes a main heat sink 81, an auxiliary heat sink 82, and a bracket 83; the bracket 83 is located on one side of the main heat sink 81, and the auxiliary heat sink 82 is located inside the bracket 83; when the mast assembly is in a horizontal state, the main mast 1 is attached to the bracket 83. By designing the heat dissipation components into a combined structure of main radiator 81, auxiliary radiator 82, and bracket 83, the dual functions of heat dissipation and support are integrated: bracket 83 serves as both the mounting carrier for auxiliary radiator 82 (by embedding auxiliary radiator 82 within bracket 83 to fully utilize space) and, when the mast assembly is in a horizontal state, supports the overlap of the main mast 1, eliminating the need for additional independent support components, simplifying the overall structure, and saving construction site space; the main radiator 81 and auxiliary radiator 82 work together to dissipate heat for different hydraulic circuits of the drilling rig, significantly increasing the heat dissipation area compared to a single radiator, adapting to the heat dissipation requirements of high-power operations of hydraulic core drilling rigs (avoiding system efficiency degradation due to hydraulic oil overheating); when the mast is horizontally overlapped with bracket 83, the structural strength of bracket 83 can stably support the mast, preventing it from being suspended and deformed; this design, in conjunction with the lightweight through-hole structure of the mast assembly, further improves the overall space utilization and heat dissipation efficiency, adapting to long-term, high-intensity operation scenarios in core exploration construction.

[0071] Furthermore, such as Figure 15 As shown, the drilling rig body 6 includes a vehicle body 61, a thrust cylinder assembly 62, and a mast lifting drive 63. The thrust cylinder assembly 62 is rotatably mounted on the vehicle body 61. The main mast 1 is slidably connected to the thrust cylinder assembly 62 via a second track. The thrust cylinder assembly 62 can drive the mast assembly to rotate in the horizontal plane. One end of the mast lifting drive 63 is connected to the outside of the main mast 1, and the other end of the mast lifting drive 63 is connected to the thrust cylinder assembly 62 to drive the mast assembly to lift and lower. The horizontal rotation of the thrust cylinder assembly 62 and the vertical lifting of the mast lifting drive 63 form a composite attitude adjustment capability in both planar and vertical planes. Combined with the sliding adaptation of the main mast 1 along the second track, it can adapt to pile positions in any spatial location, greatly improving the drilling rig's adaptability to complex terrain and special pile position layouts.

[0072] In this embodiment, the mast lifting actuator 63 is located outside the mast assembly, compared to the traditional method of placing it inside. This avoids interference issues within the internal space of the mast assembly, improves maintainability, and facilitates inspection and replacement of the mast lifting actuator 63. The force path is clear and reasonable, and the load is transmitted more stably through the external mast lifting actuator 63. Moreover, both the thrust cylinder assembly 62 and the mast assembly are located within the working area of ​​the auxiliary radiator 82. The cooling airflow from the auxiliary radiator 82 can directly cover the core moving components of the thrust cylinder assembly 62 and the mast assembly (such as the hydraulic lines of the thrust cylinder, the cylinder body of the mast lifting actuator 63, and the sliding contact surface of the rail). When both perform high-frequency rotation (the thrust cylinder drives the mast to rotate horizontally), lifting (the mast lifting actuator 63 drives the attitude adjustment), and sliding (the main mast 1 moves along the second rail), it can quickly remove frictional heat and heat generated by the hydraulic system, preventing the decrease in hydraulic oil viscosity, aging of seals, or failure of rail lubrication due to overheating, extending the life of the drive components, and ensuring the stable response speed of the hydraulic system.

[0073] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0074] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0075] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0076] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0077] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A mast assembly, characterized in that, include: Main mast (1), auxiliary mast (2), telescopic actuator (3) and two track supports (4); The main mast (1) is slidably fitted onto the auxiliary mast (2), and the telescopic actuator (3) is located inside the main mast (1) and connected to the auxiliary mast (2) to drive the auxiliary mast (2) to slide along the main mast (1) to achieve extension and retraction; The track support (4) includes a support beam (41), a first slide rail (42), and a second slide rail (43); The first slide rail (42) and the second slide rail (43) are arranged in parallel on both sides of the support beam (41). From the perspective of the cross section, the three are in a Z shape. The two support beams (41) of the two track supports (4) are symmetrically arranged on both sides of the main mast (1), the two first slide rails (42) form the first track, and the two second slide rails (43) form the second track; the first track and the second track extend along the length of the main mast (1); The first track is used to install the power assembly (5) that holds the drill pipe; the main mast (1) is slidably connected to the drill body (6) via the second track, and the drill body (6) can drive the main mast (1) to slide; It also includes a first friction positioning component and a second friction positioning component; The first friction positioning component is located at the top of the main mast (1), and the main mast (1) abuts against the auxiliary mast (2) through the first friction positioning component; the second friction positioning component is located at the bottom of the auxiliary mast (2), and the auxiliary mast (2) abuts against the main mast (1) through the second friction positioning component. During the sliding process of the telescopic actuator (3) driving the submast (2), the first friction positioning component rubs the submast (2) to slide, and the second friction positioning component rubs the main mast (1) to slide. After the drive stops, the submast (2) is positioned by the friction of the first friction positioning component and the second friction positioning component on the submast (2) and the main mast (1) respectively. The first friction positioning assembly includes a chuck (71), a pad (72), a friction block (73), and a clearance adjustment assembly; The chuck (71) is attached to the main mast (1), the clearance adjustment assembly is installed on the chuck (71), the pad (72) is located between the clearance adjustment assembly and the chuck (71), and the clearance adjustment assembly abuts against the auxiliary mast (2) through the friction block (73). The gap adjustment assembly includes an adjustment head (74), a fixing nut (75), and an adjustment nut (76); The adjusting head (74) can slide along its axis through the middle of the chuck (71) and the pad (72), the fixing nut (75) and the adjusting nut (76) are threadedly connected to the adjusting head (74), and the friction block (73) is fixedly installed at the end of the adjusting head (74); The axial movement of the adjusting head (74) is achieved by rotating the adjusting nut (76), thereby adjusting the gap between the friction block (73) and the auxiliary mast (2).

2. The mast assembly as claimed in claim 1, characterized in that, The main mast (1) is equipped with a drill pipe guide assembly (11) and a power head drive (12). The drill pipe guide assembly (11) is slidably mounted on the first guide rail; the lifting drive is mounted between the two first slide rails (42), and the lifting drive connects the drill pipe guide assembly (11) and the power assembly (5) to drive the drill pipe guide assembly (11) to lift and lower synchronously with the drill pipe during the lifting and lowering process.

3. The mast assembly as claimed in claim 1, characterized in that, It also includes a forehead (21) and a rotation driver (22); The forehead (21) is rotatably mounted on the top of the submast (2). The two ends of the rotation driver (22) are connected to the submast (2) and the forehead (21) to drive the forehead (21) to rotate in the horizontal plane.

4. The mast assembly as claimed in claim 1, characterized in that, Multiple first through holes (13) are evenly distributed along the length of the main mast (1) on both the front and rear sides. Multiple second through holes (23) are evenly distributed along the length of the auxiliary mast (2) on both the left and right sides.

5. A hydraulic core drilling rig, characterized in that, Includes the mast assembly as described in any one of claims 1-4; It also includes the drilling rig body (6) and heat dissipation components; Heat dissipation components are installed on the main body of the drilling rig (6); When the mast assembly is in a horizontal position, the main mast (1) overlaps the heat dissipation assembly.

6. The hydraulic core drilling rig as described in claim 5, characterized in that, The heat dissipation assembly includes a main heat sink (81), a secondary heat sink (82), and a bracket (83). The bracket (83) is located on one side of the main radiator (81), and the auxiliary radiator (82) is located inside the bracket (83); when the mast assembly is in a horizontal state, the main mast (1) is attached to the bracket (83).

7. The hydraulic core drilling rig as described in claim 5, characterized in that, The drilling rig body (6) includes a car body (61), a thrust cylinder assembly (62), and a mast lifting drive (63). The thrust cylinder assembly (62) is rotatably mounted on the vehicle body (61). The main mast (1) is slidably connected to the thrust cylinder assembly (62) via a second rail. The thrust cylinder assembly (62) can drive the mast assembly to rotate in the horizontal plane. One end of the mast lifting driver (63) is connected to the outside of the main mast (1), and the other end of the mast lifting driver (63) is connected to the thrust cylinder assembly (62) to drive the mast assembly to lift.

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